CN114293987B - Wheel bucket excavator suitable for excavating harder materials - Google Patents
Wheel bucket excavator suitable for excavating harder materials Download PDFInfo
- Publication number
- CN114293987B CN114293987B CN202111389542.9A CN202111389542A CN114293987B CN 114293987 B CN114293987 B CN 114293987B CN 202111389542 A CN202111389542 A CN 202111389542A CN 114293987 B CN114293987 B CN 114293987B
- Authority
- CN
- China
- Prior art keywords
- assembly
- supporting
- bearing
- connecting shaft
- adjusting plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000463 material Substances 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 97
- 238000007599 discharging Methods 0.000 claims description 32
- 238000005452 bending Methods 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000000712 assembly Effects 0.000 claims description 16
- 238000000429 assembly Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims 5
- 230000002829 reductive effect Effects 0.000 abstract description 9
- 238000005065 mining Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000013016 damping Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 230000036961 partial effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 206010011416 Croup infectious Diseases 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009133 cooperative interaction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model provides a be suitable for mining harder material and fight excavator with wheel, includes running gear (1), gate-type revolving platform (13) that link to each other with running gear (1) through big slewing bearing mechanism (11), sets up on gate-type gyration (12) receive material arm mechanism (14) of installing bucket wheel machine (13), its technical essential is: an adjusting plate assembly (4) is arranged between the supporting base assembly (2) and the rotary supporting assembly (3), the supporting base assembly (2) is fixed on a running mechanism (1) of the equipment, the rotary supporting assembly (3) is fixed on a door-shaped rotary table (12) of the equipment, a free inclination angle in a limited range of the advancing direction can be arranged between the supporting base assembly (2) and the adjusting plate assembly (4), and the supporting base assembly can freely slide along a bearing seat slide way (41). The large transverse impact on the large slewing bearing when the excavator excavates harder materials is reduced, the service life of the large slewing bearing is prolonged, and the overall stability of the bucket wheel excavator is improved.
Description
Technical Field
The invention relates to mechanical equipment for excavating a strip mine, in particular to excavating machinery with a centrifugal wheel, a roller or a thrower, and particularly relates to a bucket-wheel excavator suitable for excavating harder materials.
Background
The invention patent application of application publication No. CN1172196A discloses a relatively common bucket-wheel excavator, and manufacturers of the excavator mainly comprise Sandvik, KRUB (KRUPP) and the like. The excavator mainly comprises a rotary bucket wheel, a receiving arm and a discharging arm, wherein the rotary bucket wheel is positioned at the front end and can realize uninterrupted excavation, the receiving arm is used for conveying ores in the bucket wheel, the discharging arm is used for guiding ores on the receiving arm out of the tail part, and the C-shaped bearing beam is connected with each mechanism and a travelling mechanism is used for bearing an upper structure. In the prior art, the bucket wheel is arranged on a receiving arm, the receiving arm is arranged on a C-shaped bearing beam in the middle, one end of a discharging arm is connected with the C-shaped bearing beam, the other end of the discharging arm is arranged on a travelling mechanism through a small slewing mechanism, and the C-shaped bearing beam is connected with the travelling mechanism through a large slewing mechanism.
In the prior art, the discharging arm slewing mechanism is directly arranged on a chassis of the travelling mechanism through an external tooth type slewing bearing, the driving gear directly drives the turntable to rotate through the external tooth type slewing bearing, the rotation of the discharging arm is realized, and the gravity of the discharging arm is transmitted to the chassis of the travelling mechanism through the slewing mechanism. However, the device is large in size and weight, and all rigid connection is adopted, so that the service life of the connecting piece is greatly influenced. Secondly, the poor and round bucket excavator of operating mode road surface roughness will cause equipment to produce great irregular vibration that jolts when going over the subaerial hard material that spills in advancing, and vibration can directly feed back to gear engagement department through running gear chassis, makes its atress uneven, causes the engagement surface nonlinear contact between the gear, has increased wearing and tearing between the part, and then leads to the gear to become invalid, driving motor operation is unstable, the gyration support receives the impact great, aggravate the adverse conditions such as unloading arm vibration. Again, due to the large volume of the excavator components, they are almost impossible to transport to the site after being assembled by the manufacturer in a road transport manner, but can only be assembled on site. Due to the difference of temperature and humidity of the production environment and the installation environment, the installation and assembly can be standardized macroscopically, but due to the fact that the number of disassembled parts is large and the assembly methods of different workers still have slight differences, accumulated errors generated after the whole machine is assembled are large. For example, errors caused by welding deformation of a chassis steel structure of the running gear, errors caused by deformation of the steel structure due to jolting during transportation, errors caused by inconsistent screwing degree of a bolt assembly and embedding degree between parts during field installation, and the like. In order to ensure the high precision requirement of gear engagement, additional trimming and debugging steps are required, so that manpower and material resources are consumed, and the field installation efficiency is greatly reduced. More importantly, because the connection mode of the discharging arm and the traveling chassis in the prior art causes that the discharging arm generates larger external force on the middle C-shaped bearing beam, especially when the front bucket wheel digs harder materials with the compressive strength being more than or equal to 12MPa, larger impact load is generated on the C-shaped bearing beam, and the two external force can cause that a large slewing mechanism connected between the C-shaped bearing beam and the traveling mechanism always receives larger transverse load impact, which is extremely unfavorable for the stress condition of the large slewing mechanism and seriously affects the service life of the large slewing mechanism.
In the prior art, an elastic vibration damping mechanism is mostly adopted to isolate a running mechanism in a self-adaptive compensation mode, such as a hydraulic damping vibration damper, an air damping vibration damper, a rubber vibration damper and the like. In the technical scheme disclosed in publication number WO9966134A1, vibration isolation is realized by matching laminated rubber with an oil cylinder. In the technical scheme disclosed in the publication number JP2006069233A, the self-adaptive vibration compensation is realized by a rubber pad composite structure. And spring dampers commonly found in the related art, such as suspension damping systems for motor vehicles. The technical scheme can properly compensate the vibration of the actuating mechanism, is easily influenced by the environmental temperature, is limited by physical characteristics such as tensile strength of the vibration damping material, and the like, and is not suitable for being applied to rigid joints of heavy mechanical equipment.
The design scheme of the discharging arm device of the existing bucket wheel excavator is a linear fixed-section cantilever beam structure. The bucket wheel excavator rotates by utilizing the bucket wheel mechanism, and the continuous excavating whole process of the bucket wheel excavator is realized through a plurality of buckets arranged on the circumference of the bucket wheel mechanism. Because each bucket on the front bucket wheel can generate vibration influence on the whole machine of the equipment in the process of excavating, and particularly when harder materials are excavated, larger vibration amplitude is easy to generate, the bending rigidity of the unloading arm is reduced, and the whole unloading arm is easy to fatigue and unstably cause. Secondly, the original unloading arm is heavy in total weight in order to ensure the strength and the rigidity of the cantilever structure, so that the variation range of the gravity center of the whole machine is increased and the stability of the whole machine equipment is reduced in the rotation and pitching movement process of the unloading arm. Thirdly, in order to meet the minimum unloading height and reach the required unloading height, the prior art mostly adopts a mode of increasing the stroke of the hydraulic cylinder, namely the purchasing cost of the hydraulic cylinder is increased, and the cost of the hydraulic cylinder is quite expensive compared with the cost of other standard parts. Therefore, reducing the stroke of the hydraulic cylinder reduces the equipment cost, and reduces the weight of the equipment, and at the same time, improving the stability of the equipment is one of the difficulties in equipment development.
Disclosure of Invention
The invention provides a wheel bucket excavator for excavating harder materials in an open pit, which fundamentally solves the problems, and the steel impact of a traveling mechanism on a slewing bearing of a middle unloading arm can be effectively reduced by a self-adaptive compensation matching error mode by a unloading arm slewing mechanism, the accumulated errors in the processes of installation, manufacture and operation can be effectively absorbed, the stress condition and meshing transmission precision of gears are improved, meanwhile, the gravity of the unloading arm is not transmitted to the traveling mechanism by the unloading arm slewing mechanism, and is applied to a gate type slewing table (consistent with the action of a C-shaped bearing beam in the prior art), namely, the gravity of the unloading arm is converted into the internal force of the gate type slewing table from the external force of the gate type slewing table, so that the larger transverse impact of the large slewing bearing is greatly reduced when the excavator excavates harder materials, the service life of the large slewing bearing is prolonged, and the overall stability of the bucket wheel excavator is improved. The unloading arm device has the advantages of high bending rigidity, contribution to the stability of the whole structure, release of local structural design space, reduction of vibration amplitude and the like.
The technical scheme adopted by the invention for achieving the purpose is as follows: the strip mine wheel bucket excavator comprises a travelling mechanism, a gate-type rotary table connected with the travelling mechanism through a large slewing bearing mechanism, a receiving arm mechanism provided with a bucket wheel machine and arranged on the gate-type rotary table, a discharging arm device which is hinged with a top cross beam of the gate-type rotary table and can freely rotate, and a discharging arm slewing mechanism arranged at the lower part of the discharging arm device.
The unloading arm rotation mechanism comprises a support base assembly, an adjusting plate assembly and a rotation support assembly which are sequentially arranged from bottom to top; the unloading arm device comprises a bending-resistant belt type conveying mechanism taking a variable cross-section supporting component as a bottom supporting structure, and the technical key points are that: the support base component is fixed on a running mechanism of the equipment, the rotary support component is arranged on the door-type rotary table, an adjusting plate component is arranged between the support base component and the rotary support component, a free inclination angle in a limited range of the advancing direction can be arranged between the support base component and the adjusting plate component, the support base component and the adjusting plate component can slide freely along a bearing seat slideway, and meanwhile, the adjusting plate component and the rotary support component can slide freely along an upper connecting shaft slideway, so that the rotary support component and the adjusting plate component are supported on the support base component in a self-adaptive manner; the adjusting plate assembly comprises an adjusting plate, symmetrically arranged bearing seats, symmetrically arranged bearing seat slide ways and symmetrically arranged upper connecting shaft slide ways, wherein the center line of the symmetrically arranged bearing seat slide ways is always vertical to the center line of the symmetrically arranged upper connecting shaft slide ways, and the middle points of the symmetrically arranged bearing seat slide ways are coincident; the upper connecting shaft can freely slide along the upper connecting shaft slideway, the bearing seat can freely slide along the bearing seat slideway, and the free inclination angle in the limited range of the advancing direction can be realized through the joint bearing.
Further, the bending-resistant belt type conveying mechanism comprises a driving motor speed reducer, a head roller assembly and a tail roller assembly which are arranged at the output end of the driving motor speed reducer and are connected through a belt, a conveying frame assembly which is used for providing bending-resistant support and is connected with the variable cross-section supporting mechanism, and a carrier roller assembly is arranged at the bottom of the belt; the conveying frame assembly comprises a front conveying frame, a plurality of conveying frame side beams symmetrically arranged along the length direction of the variable-section supporting mechanism, conveying frame longitudinal beams connected between the adjacent conveying frame side beams, a pull rod supporting beam vertically fixed on the conveying frame longitudinal beams, a pull rod connecting plate which is perpendicular to the pull rod supporting beam along the length direction and has an included angle smaller than or equal to 90 degrees with a belt, and a pull rod assembly arranged along the pull rod connecting plate.
Further, the carrier roller assembly comprises a plurality of three carrier roller assemblies with three degrees of freedom, two carrier roller assemblies, and a head bend roller assembly, wherein the three carrier roller assemblies are arranged at intervals at the bottom of the upper bearing section, the two carrier roller assemblies are limited at the lower bearing section through elastic intervals of a chain, and the head bend roller assembly is parallel to the head roller assembly in a rotating shaft.
Further, the adjusting plate is provided with a pair of bearing seat slide ways which are symmetrical in center and a pair of upper connecting shaft slide ways which are symmetrical in center, and the center lines of the two pairs of slide ways are mutually perpendicular and the midpoints of the two pairs of slide ways are coincident; the lower connecting shaft is connected to the supporting base assembly through a bearing seat, and the upper connecting shaft is connected to the transmission gear assembly; the lower connecting shaft is in sliding fit on the bearing seat slide way through a bearing seat provided with a joint bearing, and the upper connecting shaft is in sliding fit on the upper connecting shaft slide way through a processing plane positioned at the shaft end of the upper connecting shaft.
Further, the rotary support assembly comprises a transmission gear assembly in sliding fit with the adjusting plate assembly, a central shaft assembly with the shaft end limited on the transmission gear assembly, a driving device with the output end matched with the transmission gear assembly, an inner rotary table coaxially matched with the transmission gear assembly through the central shaft assembly, and an outer rotary table matched with the inner rotary table through a gearless rotary support.
Further, the variable cross-section supporting mechanism comprises an arched steel structure framework, the steel structure framework comprises a pair of supporting side beams extending downwards along the longitudinal direction, a framework beam assembly is arranged between the supporting side beams, the framework beam assembly comprises an upper beam and a lower beam which are arranged at intervals, an upper oblique beam assembly and a lower oblique beam assembly which are arranged in wedge-shaped units formed by the beams, and the adjacent wedge-shaped units are alternately arranged by circular oblique beams or H-shaped steel oblique beams.
Further, the conveying frame longitudinal beam is H-shaped steel.
The invention has the beneficial effects that: on the whole technical scheme, the invention is mainly improved aiming at the unloading arm slewing mechanism and the unloading arm device, effectively relieves the rigid impact between the meshing teeth of the small slewing gears, reduces the transverse impact load born by the large slewing bearing structure, and effectively prolongs the service life of the gears in large and small slewing. Through setting the variable cross section arch structure that the arm of unloading is wide in front and narrow in back, under the prerequisite that does not influence the rigidity requirement, not only can reduce the quantity of structure section bar and reduce manufacturing cost, can rationally absorb the vibrations that produce when bucket wheel mechanism excavated harder material moreover, avoid the swing by a wide margin of the arm of unloading, simultaneously, can release the space for other structural design below the arm of unloading again. Through the cooperative interaction of the two groups of mechanisms, the adverse effect of different rigid impacts on the whole excavator when the excavator walks and excavates harder materials is further eliminated.
The unloading arm rotating mechanism is provided with an adjusting plate assembly between the supporting base assembly and the rotating supporting assembly to isolate the vibration and impact of the travelling mechanism from the inner rotating table; the inner rotary table is arranged on the outer rotary table, and two pairs of bearing seat slide ways and fixed shaft slide ways which are used for sliding fit and are mutually perpendicular and crossed are arranged on the same installation plane on the adjusting plate assembly. Through the mode of flexible anti-vibration structure, the multidirectional self-adaptive adjustment is finally realized, accumulated errors generated in the manufacturing, transporting, assembling and using processes are compensated, the problems of poor gear engagement precision and service life reduction caused by the accumulated errors are solved, the stable rotation of the inner rotary table is ensured, namely the stable rotation of the discharging arm is ensured, and the running stability of equipment is ensured.
In the regulating plate assembly, in the U-shaped mouth of its regulating plate, for convenient sliding fit and assembly, lower linking axle, bearing frame and bearing frame slide, go up linking axle and the cooperation of last linking axle slide, processed corresponding sliding surface promptly in the regulating plate production process. In order to realize the self-adaptive compensation of the unfavorable vibration generated by the travelling mechanism, the adjusting plate assembly adopts a flexible vibration reduction mechanism matched with the joint bearing in a sliding way.
The unloading arm device adopts an arch conveying mechanism erected by an arch supporting structure, ensures the bending rigidity of the unloading arm, simultaneously reduces the weight of the unloading arm, reduces the stroke of a hydraulic cylinder, reduces the gravity center change range in the whole machine operation process, improves the stability of the whole machine operation, and simultaneously, sets the structures of a bending-resistant connecting rod, a carrier roller with high degree of freedom and the like for enhancing the rigidity of the whole machine operation.
The variable cross section supporting mechanism is provided with an arched variable cross section unloading arm truss and consists of a plurality of variable cross section wedge units, wherein an included angle between a first variable cross section wedge unit and a last variable cross section wedge unit is n degrees, and adjacent units are connected with each other through welding or fastening pieces. A wedge-shaped unit with variable cross section is composed of I-shaped side beams, middle cross-section and middle diagonal draw bars, and the components are connected with each other by welding or fastening pieces.
The height of the cross section of the I-shaped side beam in the first variable cross section wedge-shaped unit is unchanged or gradually reduced along the direction from the beginning to the end; in the second variable cross-section wedge unit, the side member cross-sectional height gradually decreases from the head to the tail. The thickness of the side beam flange plate and the web plate is reduced in steps compared with the thickness of the I-shaped side beam flange plate and the web plate in the first variable cross-section wedge-shaped unit; the first variable cross-section wedge-shaped unit and the second variable cross-section wedge-shaped unit are connected up and down through diagonal draw bars, the web plate of the wedge-shaped I-shaped side beam and the upper flange plate and the lower flange plate are correspondingly butted, and the included angle between the upper flange plates of the side beams is N/N degrees.
And arranging a plurality of variable cross-section wedge-shaped units according to the direction from the head to the tail of the discharging arm, sequentially corresponding to the first unit to the N-th unit, connecting the variable cross-section wedge-shaped units with each other, and gradually reducing the section height, the thicknesses of the upper and lower flange plates and the web thickness in the cross section of the wedge-shaped I-shaped side beam in a gradient manner according to the direction from the head to the tail to finally form the variable cross-section arched discharging arm truss with an included angle of N degrees.
The bending-resistant belt type conveying mechanism is provided with a carrier roller group support with a bending-resistant structure, and is formed by combining a channel steel type carrier roller support, a round tube type bending-resistant connecting rod, supporting legs and an overhanging connecting piece, wherein the carrier roller group support extends continuously from the head part to the tail part of a discharging arm. The circular tube-connecting plate is connected with the circular tube into a whole, and a plurality of circular tube-connecting plate assemblies are connected in an up-down arrangement mode to form the circular tube type bending-resistant connecting rod. The overhanging connecting rods and the supporting legs are arranged at intervals and are respectively connected with the channel steel type carrier roller bracket to form a supporting leg-carrier roller bracket-overhanging connecting rod assembly. And finally, connecting the round tube type bending-resistant connecting rod with an overhanging connecting rod in the supporting leg-supporting roller bracket-overhanging connecting rod assembly to form the supporting roller group bracket with the bending-resistant structure.
In conclusion, the slewing mechanism has the advantages of simple and compact structure, high stability, good safety and the like; the carrier roller group bracket with the bending-resistant structure can slightly increase the bending rigidity of the discharge arm, can prevent the scattering phenomenon caused by the deviation of the conveying belt, and can effectively improve the bending strength of the discharge arm and reduce the vibration amplitude of the discharge arm.
Drawings
Fig. 1 is a schematic structural view of a bucket wheel excavator according to the present invention.
Fig. 1A is a schematic structural view of the running gear of the present invention.
Fig. 2 is a schematic cross-sectional view of the swing mechanism of the present invention.
Fig. 2A is a schematic cross-sectional view of fig. 2 along line A-A.
Fig. 2A-1 is a schematic view of a partial enlarged structure of a portion of the central shaft assembly of fig. 2A.
Fig. 2A-2 are partial enlarged schematic views of the mount portion of fig. 2A.
Fig. 2B is a schematic cross-sectional view of fig. 2 along line B-B.
Fig. 2C is a schematic cross-sectional view of fig. 2 along line C-C.
Fig. 2D is a schematic cross-sectional view of fig. 2 along line D-D.
Fig. 2E is a schematic cross-sectional view of fig. 2 along line E-E.
Fig. 2F is a schematic view of an enlarged partial structure of the junction of the upper adapter shaft and the drive gear assembly of fig. 2.
Fig. 3 is a reference view showing a state of use of the swing mechanism of the present invention.
Fig. 4 is a schematic side view of fig. 3.
Fig. 5 is a schematic view of the bottom structure of fig. 3.
Fig. 6 is a schematic view of the seismic principle of the swing mechanism of the present invention.
Figure 7 is a schematic isometric side view of a discharge arm of the present invention.
Fig. 8 is a schematic exploded view of the discharge arm of the present invention.
Fig. 9 is a schematic front view of the discharge arm of the present invention in the longitudinal direction.
Fig. 9A is a schematic cross-sectional view of fig. 9 along line A-A.
Fig. 9B is a schematic cross-sectional view of fig. 9 along line B-B.
Fig. 9C is a schematic cross-sectional view of fig. 9 along line C-C.
Fig. 10 is a schematic cross-sectional view of the discharge arm of the present invention along its length.
Detailed Description
The following describes the details of the present invention in detail through specific embodiments with reference to fig. 1 to 10.
As shown in fig. 1, the bucket excavator for mining in the surface mine comprises a travelling mechanism 1, a gate-type rotary table 12 connected with the travelling mechanism 1 through a large slewing bearing mechanism 11, a receiving arm mechanism 14 provided on the gate-type rotary table 12 and provided with a bucket wheel mechanism 13, a discharging arm device 17 connected with a gate-type rotary table upright 16 through a rotatable connecting piece 15, and a discharging arm slewing mechanism 18 provided at the lower part of the discharging arm device 17.
As shown in fig. 1A, the running mechanism 1 is composed of a track assembly 101, a center frame 102 and a balance beam 103, wherein the track assembly 101 is hinged with the center frame 102, the center frame 102 is hinged with the middle part of the balance beam 103, and two ends of the balance beam 103 are hinged with the track assembly 101.
To increase the need for a large slewing bearing 11 between the gantry 12 and the running gear 1 to resist lateral load impacts and rigid impacts between the slewing bearing assembly 3 and the support base assembly 2, the main improvements of the present invention are as follows.
As shown in fig. 2 and 2A, the discharge arm swing mechanism for the bucket excavator mainly includes a support base assembly 2, an adjusting plate assembly 4, and a swing support assembly 3 from bottom to top. The support base component 2 is fixed on the running mechanism 1 of the equipment, the rotary support component 3 is fixed on the door-type rotary table 12, and the adjusting plate component 4 can adaptively connect the rotary support component 3 and the support base component 2 through an upper connecting shaft 46 and a lower connecting shaft 44 which are mutually perpendicular and crossed by two pairs of axial connecting lines.
As shown in fig. 2A-1, the center shaft assembly 37 capable of freely rotating is installed at the rotation center of the inner turntable 38, the center shaft assembly 37 comprises a center shaft 372 with rolling bearings 371 respectively arranged at the upper end and the lower end, the rolling bearings 371 are respectively positioned through center bearing positioning sleeves 34 positioned at the upper end and the lower end of the inner turntable 38, an upper shaft end baffle 373 is arranged at the upper shaft end of the center shaft 372, the lower shaft end of the center shaft 372 extends out of the inner turntable 38 and is positioned through a center shaft sleeve 375 and a lower shaft end baffle 376 positioned in a transmission gear assembly 3221, and the middle part of the center shaft 372 is positioned through a spacing sleeve 374 positioned between the upper rolling bearing 371 and the lower rolling bearing 371, so that the center shaft 372 is firmly limited through the structure. By providing the center bushing 375 and the two pairs of center bearing positioning bushings 34, the transmission gear assembly 32 is independent of the inner turntable 38, thereby realizing free rotation with the center shaft assembly 37 as an axis, without interference.
The overall structure is further described below with reference to fig. 2A to 2E in the order from bottom to top in fig. 2.
As shown in fig. 2A-2 and 2B, a pair of lower engagement shafts 44 are symmetrically limited by a lower engagement shaft sleeve 441 on the mounting seat 21 at the top of the support base assembly 2, and a lower engagement shaft end baffle 442 is provided at the end of the lower engagement shaft sleeve 441. For the convenience of production and assembly, the support base assembly 2 is split into multiple pipe elements connected by flanges, for example, the embodiment adopts two-section assembly formed by an upper central pipe 22 and a lower central pipe 23, and the lower central pipe 23 is fixed on the travelling mechanism 1, so that the fixed central pipe is ensured to be fixed in the circumferential direction.
As shown in fig. 2A, 2A-2, 2C and 5, the adjusting plate 43 is of a symmetrical structure, preferably an octagon, wherein two sets of opposite sides are respectively provided with a pair of U-shaped grooves, a bearing seat slide 41 and a fixed shaft slide 42 are arranged at the inner side of the opening, and matching surfaces are processed at the opposite sides of the bearing seat 47 and the bearing seat slide 41, so that the bearing seat 47 is slidably matched on the bearing seat slide 41, and the upper shaft ends of the lower connecting shafts 44 are movably connected in the bearing seat 47 through the joint bearings 45. The lower extending end circumference of the upper connecting shaft 46 is provided with a matching plane which is in sliding fit with the upper connecting shaft slideway 42 of the adjusting plate 43, so that the transmission gear assembly 32 and the adjusting plate 43 can slide freely along the matching planes, the sliding surfaces of the slideways are two parallel processing surfaces, and the slideways are respectively matched with the extending end parallel processing surfaces of the upper connecting shaft 46. On the adjusting plate 43, the axis connecting line of the upper connecting shaft 46 and the axis connecting line of the lower connecting shaft 44 are mutually perpendicular and the midpoints are coincident, so that the front, rear, left, right, upper and lower self-adaptive adjustment of the transmission gear assembly 3221 relative to the fixed central tube is realized, and the purpose of stably transmitting torque is achieved.
As shown in fig. 2D and 2F, the transmission gear assembly 32 mainly includes a transmission gear assembly 3221 and a toothed disc 322, a central shaft sleeve 375 for limiting the lower end of the central shaft 372 is disposed at the center of the toothed disc 322, the upper connecting shaft 46 is symmetrically limited on the toothed disc 322 through the upper connecting shaft sleeve 461, and the toothed disc 322 is meshed with the driving gear 311.
As shown in fig. 2 and 2E, the inner turntable 38 has a cylindrical structure, and the inner ring of the toothless slewing bearing 36 and the outer edge of the inner turntable 38, and the outer ring of the toothless slewing bearing 36 and the inner edge of the outer turntable 35 can be connected and fixed by flanges. The center of the inner rotary table 38 is limited by a central shaft assembly 37 through a central bearing positioning sleeve 34, the upper part of the inner rotary table 38 is symmetrically limited by a driving device 31 (mainly a driving motor and a speed reducer) through a supporting structure, a symmetrically arranged unloading arm hinged support 33 is arranged on the upper part of the inner rotary table 38, a driving gear 311 is assembled on a driving output shaft 312 of the driving device 31, the outer edge of the inner rotary table 38 is connected with an outer rotary table 35 through a toothless rotary support 36, and the outer rotary table 35 is rigidly connected with the travelling mechanism 1.
As shown in fig. 6, the mounting seat 21, the adjusting plate 43 and the transmission gear assembly 32 are sequentially arranged from bottom to top, the driving gear 311 meshed with the rotary support assembly 3 is engaged on the inner rotary table 38 at the upper part of the central shaft 372, a pair of upper engaging shafts 46 connected with the adjusting plate 43 are always perpendicular to the rotary support assembly 3, a pair of lower engaging shafts 44 connected with the adjusting plate 43 are always perpendicular to the support base assembly 2, the lower engaging shafts 44 drive the bearing seat 47 to synchronously slide along the ± X axis direction, the upper engaging shafts 46 can synchronously slide along the ± Y axis, the upper engaging shafts 46 are always parallel to the central shaft 372 positioned by the central shaft sleeve 375, a free inclination angle within a limited range of the advancing direction can be provided between the support base assembly 2 and the adjusting plate assembly 4, and the adjusting plate assembly 4 can freely slide along the matching surface between each other, and the adjusting plate assembly 4 and the rotary support assembly 3 can freely slide along the matching surface between each other.
In principle, the support base assembly 2 and the swivel support assembly 3 are separated by the adjusting plate assembly 4, thereby avoiding a direct rigid connection between the support base assembly 2 and the swivel support assembly 3.
In a specific structure, an outer rotary table 35 is rigidly connected with a travelling mechanism 1, an inner rotary table 38 is supported on the outer rotary table 35 through a toothless rotary bearing 36, a pair of driving devices 31 are arranged on the inner rotary table 38, and the tail end structure of the driving devices is a driving gear 311 which is a first action unit; the supporting base assembly 2 is rigidly connected with the travelling mechanism 1, the transmission gear assembly 32 is connected with the supporting base assembly 2 through the adjusting plate assembly 4, and the end structure of the transmission gear assembly is the transmission gear assembly 3221, which is the second action unit. When the running mechanism 1 acts, the first action unit and the second action unit are offset, in the prior art, the two action units are rigidly matched, so that high-precision engagement cannot be realized, the above-mentioned accumulated errors further reduce the engagement precision, and the generated accumulated errors are compensated by the arrangement of the adjusting plate assembly 4, the knuckle bearing 45, the upper engagement shaft 46 and the lower engagement shaft 44 and the corresponding matching relation, so that the gear engagement precision is improved, and the contact stress between the engaged teeth is effectively reduced.
The present embodiment is mainly improved with respect to the discharging arm assembly of the point filling portion in fig. 1, the discharging arm main structure uses a variable cross section supporting mechanism 6 as the total supporting structure of the discharging arm, the variable cross section supporting mechanism 6 is connected with the chassis of the bucket excavator through a pitching pivot 66, a driving motor reducer 51 is fixed through a driving machine support 612 of a variable cross section front end 61, a conveyor front end connection 611 is used for being fixed with a front bearing seat assembly 551 of a head roller assembly 55, the driving machine support 612 is connected with a front bearing seat assembly 551 of the head roller assembly 55, the conveyor end connection 631 is matched with a rear bearing seat assembly 561 of a tail roller assembly 56, a tail rectangular frame 633 is additionally arranged on the variable cross section end 63 for discharging ore transported by the bending-resistant belt conveyor mechanism 5 downwards from the tail hopper 531, and a plurality of conveyor support protrusions 632 are also arranged inside the tail rectangular frame 633 for facilitating the fixed installation of the tail hopper 531. The pedestrian walkway 67 is fixed by the side supports 621 on the variable cross section middle end 62, the traction diagonal member 65 is hinged and fixed by the front lugs 622 and the rear lugs 623, and the traction diagonal member 65 and the pedestrian walkway 67 are all common structures in the art, and the specific fixing manner is not described in detail.
Bending-resistant belt conveyor mechanism the bending-resistant belt conveyor mechanism 5 comprises a drive motor reducer 51, a head roller assembly 55 and a tail roller assembly 56 connected by a conveyor belt and arranged at the output end of the drive motor reducer 51, a conveying frame assembly 54 for providing bending-resistant support and connected with the variable-section support mechanism 6, and a feeding assembly 52 and a return assembly 53 for the carrying section and the return section of the conveyor belt, respectively. A front guide chute 521 is fixed to a front conveying frame 546 for the ore transported in association with the excavating arm conveyor mechanism, and a terminal hopper 531 is provided at the terminal end thereof for the discharging process in association with the discharging arm. The conveying frame assembly 54 includes a front conveying frame 546, a plurality of conveying frame side members 542 symmetrically disposed along the length direction of the variable cross-section support mechanism 6, conveying frame side members 543 joined between adjacent conveying frame side members 542, a tension rod support beam 544 vertically fixed to the conveying frame side members 543, a tension rod joint plate 545 longitudinally and perpendicularly to the tension rod support beam 544 and having an angle of 90 ° or less with respect to the belt, and a tension rod assembly 541 disposed along the tension rod joint plate 545. The carrier roller assembly comprises a plurality of three carrier roller assemblies with three degrees of freedom, two carrier roller assemblies, and a head bend roller assembly 533, wherein the three carrier roller assemblies are arranged at intervals at the bottom of a carrying section of the conveyor belt, the two carrier roller assemblies are limited at a return section of the conveyor belt through elastic intervals of a chain, and the head bend roller assembly 533 is parallel to the head roller assembly 55 in a rotating shaft. The transport frame stringers 543 are preferably H-section steel, and are gradually bent to fit the arch support structure through the transport frame stringers 543 connected end to end without affecting the overall rigidity.
With respect to the specific construction of the idler assembly, the conveyor is divided into an upper load-carrying section conveyor 522 and a lower return section conveyor 532 for ease of description. The upper carrier section conveyor 522 includes a front section feed idler assembly 523, a middle section feed idler assembly 524, and a rear section feed idler assembly 525, among other things. The front section feed roller assemblies 523 are used to fold the conveyor into a transition section of a trapezoidal configuration so that the slot angle between the front section feed roller assemblies 523 is progressively increased to the same slot angle for the middle section feed roller assembly 524 and into the tail roller assembly 56 at the end of the feed assembly 52 in a progressively decreasing slot angle through the end section feed roller assembly 525. By adopting the trapezoid cross section of the upper bearing section conveying belt 522, sideslip dropping of ores is effectively avoided. Because the lower return conveyor 532 is not required to carry material, and is configured to cooperate with the idler connection of the middle feed idler assembly 524 and to minimize the effort to simplify the structure, both the middle return idler assembly 534 and the end return idler assembly 535 are configured as hinged double rollers, both sides of which are suspended by a chain, and the head redirect roller assembly 533 is configured to cooperate with the conveyor return head roller assembly 55, thereby providing a parallel single roller.
Variable cross-section support mechanism the variable cross-section support mechanism 6 comprises an arched steel structure skeleton comprising a pair of support side beams extending longitudinally downward, a skeleton beam assembly 64 disposed between the support side beams, the skeleton beam assembly 64 comprising upper and lower cross beams 643 and 644 disposed at intervals, and upper and lower diagonal beam assemblies 641 and 642 disposed in wedge-shaped units (not shown) constituted by the cross beams, the variable cross-section support mechanism 6 being arranged in an arch by providing a wedge-shaped unit structure of a rectangular parallelepiped.
0064. To increase the rigidity of the wedge unit, a splayed upper and lower beam assembly 641, 642 are provided therein. Meanwhile, in order to ensure that the wedge units have larger bending angles and ensure structural rigidity, adjacent wedge units are alternately arranged by circular oblique beams or H-shaped steel oblique beams.
Through the structure, the truss of the discharging arm of the bucket excavator can be in an arch shape, and the included angle of the arch is 1-15 degrees.
Reference numerals illustrate: 1. the device comprises a travelling mechanism, a large pivoting support mechanism 11, a door-type rotary table mechanism 12, a bucket wheel mechanism 13, a receiving arm mechanism 14, a rotatable connecting piece 15, a door-type rotary table upright post 16, a discharging arm device 17, a discharging arm pivoting device 18, a 101 track assembly, a 102 center frame and a 103 balance beam; 2. the support base assembly, the 21 mounting seat, the 22 upper central tube and the 23 lower central tube; 3. the device comprises a rotary support assembly, a 31 driving device, a 311 driving gear, a 312 driving output shaft, a 32 transmission gear assembly, a 321 gear ring, a 322 fluted disc, a 33 lifting hook, a 34 central bearing positioning sleeve, a 35 outer rotary table, a 36 toothless rotary support, a 37 central shaft assembly, a 371 rolling bearing, a 372 central shaft, 373 upper shaft end baffle, a 374 spacer sleeve, a 375 central shaft sleeve, 376 lower shaft end baffle and a 38 inner rotary table; 4. the adjusting plate component, the 41 bearing seat slide way, the 42 upper connecting shaft slide way, the 43 adjusting plate, the 44 lower connecting shaft, the 441 lower connecting shaft sleeve, the 442 lower connecting shaft end baffle, the 45 knuckle bearing, the 46 upper connecting shaft, the 461 upper connecting shaft sleeve, the 462 upper connecting shaft end baffle and the 47 bearing seat; 5. the conveyor belt comprises a bending resistance belt type conveying mechanism, a 51 driving motor speed reducer, a 52 conveying component, a 521 front end guide chute, a 522 upper bearing section conveying belt, a 523 front section conveying roller component, a 524 middle section conveying roller component, a 525 tail section conveying roller component, a 53 return component, a 531 tail end hopper, a 532 lower return section conveying belt, a 533 head bend pulley component, a 534 middle section return roller component, a 535 tail section return roller component, a 54 conveying frame component, a 541 pull rod component, a 542 conveying frame side beam, a 543 conveying frame longitudinal beam, a 544 pull rod supporting beam, a 545 pull rod connecting plate, a 546 front conveying frame, a 55 head roller component, a 551 front bearing block component, a 56 tail roller component and a 561 rear bearing block component; 6. the variable cross section support mechanism, 61 variable cross section front end, 611 conveyor front end connection, 612 drive support, 62 variable cross section middle end, 621 side support, 622 front hangers, 623 rear hangers, 63 variable cross section end, 631 conveyor end connection, 632 conveyor support boss, 633 end rectangular frame, 64 skeletal beam assembly, 641 upper diagonal beam assembly, 642 lower diagonal beam assembly, 643 upper cross beam, 644 lower cross beam, 65 pull diagonal beam assembly, 66 pitch pivot, 67 pedestrian walkway.
Claims (6)
1. The wheel bucket excavator suitable for excavating harder materials comprises a travelling mechanism (1), a door-shaped rotary table (12) connected with the travelling mechanism (1) through a large slewing bearing mechanism (11), a receiving arm mechanism (14) provided with a bucket wheel machine (13) and arranged on the door-shaped rotary table (12), a discharging arm device (17) connected with a door-shaped rotary table upright post (16) through a rotatable connection (15), and a discharging arm slewing mechanism (18) arranged at the lower part of the discharging arm device (17);
the unloading arm slewing mechanism comprises a supporting base assembly (2), an adjusting plate assembly (4) and a slewing supporting assembly (3) which are sequentially arranged from bottom to top; the unloading arm device (17) comprises a bending-resistant belt conveying mechanism (5) taking a variable cross section supporting mechanism (6) as a bottom supporting structure, and is characterized in that:
an adjusting plate assembly (4) is arranged between the supporting base assembly (2) and the rotary supporting assembly (3), the supporting base assembly (2) is fixed on a travelling mechanism (1) of the equipment, the rotary supporting assembly (3) is fixed on a door-shaped rotary table (12) of the equipment, a free inclination angle in a limited range of the advancing direction exists between the supporting base assembly (2) and the adjusting plate assembly (4), the supporting base assembly can freely slide along a bearing seat slide way (41), and meanwhile, the adjusting plate assembly (4) and the rotary supporting assembly (3) can freely slide along an upper connecting shaft slide way (42) to realize that the rotary supporting assembly (3) and the adjusting plate assembly (4) are adaptively supported on the supporting base assembly (2);
the adjusting plate assembly (4) comprises an adjusting plate (43), symmetrically arranged bearing seats (47), symmetrically arranged bearing seat slide ways (41) and symmetrically arranged upper connecting shaft slide ways (42), wherein the central line of the symmetrically arranged bearing seat slide ways (41) is always vertical to the central line of the symmetrically arranged upper connecting shaft slide ways (42) and the central points of the symmetrically arranged bearing seat slide ways are coincident; the upper connecting shaft (46) can freely slide along the upper connecting shaft slideway (42), the bearing seat (47) can freely slide along the bearing seat slideway (41), and the free inclination angle in the limited range of the advancing direction can be realized through the knuckle bearing (45);
the lower connecting shaft (44) is connected to the supporting base component (2) through a bearing seat (47), and the upper connecting shaft (46) is connected to the transmission gear component;
the lower connecting shaft (44) is in sliding fit on the bearing seat slide way (41) through a bearing seat (47) provided with a joint bearing (45), and the upper connecting shaft (46) is in sliding fit on the upper connecting shaft slide way (42) through a processing plane positioned at the shaft end of the upper connecting shaft.
2. The bucket wheel excavator for the extraction of harder materials according to claim 1, wherein: the bending-resistant belt type conveying mechanism (5) comprises a driving motor reducer (51), a head roller assembly (55) and a tail roller assembly (56) which are arranged at the output end of the driving motor reducer (51) and connected through a belt, a conveying frame assembly (54) which is used for providing bending-resistant support and is connected with the variable-section supporting mechanism (6), and a carrier roller assembly is arranged at the bottom of the belt; the conveying frame assembly (54) comprises a front conveying frame (546), a plurality of conveying frame side beams (542) symmetrically arranged along the length direction of the variable cross-section supporting mechanism (6), conveying frame side beams (543) connected between adjacent conveying frame side beams (542), a pull rod supporting beam (544) vertically fixed on the conveying frame side beams (543), a pull rod connecting plate (545) which is vertical to the pull rod supporting beam (544) along the length direction and has an included angle smaller than or equal to 90 degrees with a belt, and a pull rod assembly (541) arranged along the pull rod connecting plate (545).
3. The bucket wheel excavator for the extraction of harder materials according to claim 2, wherein: the carrier roller assembly comprises a plurality of three carrier roller assemblies with three degrees of freedom, two carrier roller assemblies, and a head bend roller assembly (533) of which the rotating shafts are parallel to the head roller assembly (55), wherein the three carrier roller assemblies are arranged at the bottom of the upper bearing section at intervals, the two carrier roller assemblies are limited at the lower bearing section through elastic intervals of a chain.
4. The bucket wheel excavator for the extraction of harder materials according to claim 1, wherein: the rotary support assembly (3) comprises a transmission gear assembly in sliding fit with the adjusting plate assembly (4), a central shaft assembly (37) with the shaft end limited on the transmission gear assembly, a driving device (31) with the output end matched with the transmission gear assembly, an inner rotary table (38) coaxially matched with the transmission gear assembly through the central shaft assembly (37), and an outer rotary table (35) matched with the inner rotary table (38) through the gearless rotary support (36).
5. The bucket wheel excavator for the extraction of harder materials according to claim 4, wherein: the variable cross-section supporting mechanism (6) comprises an arched steel structure skeleton, wherein the steel structure skeleton comprises a pair of supporting side beams extending downwards along the longitudinal direction, a skeleton beam assembly (64) is arranged between the supporting side beams, the skeleton beam assembly (64) comprises an upper cross beam (643) and a lower cross beam (644) which are arranged at intervals, an upper oblique beam assembly (641) and a lower oblique beam assembly (642) which are arranged in wedge-shaped units formed by the cross beams, and the adjacent wedge-shaped units are alternately arranged by circular oblique beams or H-shaped steel oblique beams.
6. The bucket wheel excavator for the extraction of harder materials according to claim 5, wherein: the conveying frame longitudinal beam (543) is H-shaped steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111389542.9A CN114293987B (en) | 2021-11-23 | 2021-11-23 | Wheel bucket excavator suitable for excavating harder materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111389542.9A CN114293987B (en) | 2021-11-23 | 2021-11-23 | Wheel bucket excavator suitable for excavating harder materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114293987A CN114293987A (en) | 2022-04-08 |
| CN114293987B true CN114293987B (en) | 2023-11-10 |
Family
ID=80965300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111389542.9A Active CN114293987B (en) | 2021-11-23 | 2021-11-23 | Wheel bucket excavator suitable for excavating harder materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114293987B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3120565A1 (en) * | 1980-09-05 | 1982-06-24 | VEB Schwermaschinenbaukombinat TAKRAF-Stammbetrieb-Betrieb für Anlagenbau und Rationalisierung, DDR 7010 Leipzig | Device for keeping large opencast-mining units horizontal |
| CN101190769A (en) * | 2006-12-01 | 2008-06-04 | 上海比亚迪有限公司 | Heavy load balance mechanism |
| CN102146686A (en) * | 2011-01-31 | 2011-08-10 | 大连重工通用设备有限责任公司 | Bucket wheel excavator |
| CN202876930U (en) * | 2012-10-15 | 2013-04-17 | 三一重型装备有限公司 | Crushing station and supporting mechanism thereof |
| CN206128149U (en) * | 2016-08-30 | 2017-04-26 | 山东胜伟园林科技有限公司 | Hydraulic control's excavator |
| CN106703107A (en) * | 2016-12-23 | 2017-05-24 | 柳州柳工挖掘机有限公司 | Excavator |
| CN107553432A (en) * | 2017-09-08 | 2018-01-09 | 燕山大学 | A kind of heavily loaded three-dimensional turntable for balancing tilting moment |
| CN109577411A (en) * | 2017-09-28 | 2019-04-05 | 谢建光 | A kind of swing ring plate structure for heavy construction equipment |
| CN109869174A (en) * | 2019-03-12 | 2019-06-11 | 山西华翌盛安全环境评价有限公司 | Track self-shifting formula gib operates trolley |
| CN210002471U (en) * | 2019-04-01 | 2020-01-31 | 宁波东液传动科技有限公司 | slewing reducer mounting base structure for hydraulic excavator |
| CN210140866U (en) * | 2019-01-23 | 2020-03-13 | 王佳婷 | Buffering device of single-bucket excavator |
| CN212269299U (en) * | 2020-04-26 | 2021-01-01 | 江苏格雷特重工科技发展有限公司 | Protection device for telescopic boom of crane |
| CN213868027U (en) * | 2020-10-20 | 2021-08-03 | 济宁众一机械设备有限公司 | Excavator rotating platform |
| CN214169220U (en) * | 2020-12-22 | 2021-09-10 | 惠州联合阀控液压技术有限公司 | Structure for reducing vibration noise of multi-way valve applied to excavator |
-
2021
- 2021-11-23 CN CN202111389542.9A patent/CN114293987B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3120565A1 (en) * | 1980-09-05 | 1982-06-24 | VEB Schwermaschinenbaukombinat TAKRAF-Stammbetrieb-Betrieb für Anlagenbau und Rationalisierung, DDR 7010 Leipzig | Device for keeping large opencast-mining units horizontal |
| CN101190769A (en) * | 2006-12-01 | 2008-06-04 | 上海比亚迪有限公司 | Heavy load balance mechanism |
| CN102146686A (en) * | 2011-01-31 | 2011-08-10 | 大连重工通用设备有限责任公司 | Bucket wheel excavator |
| CN202876930U (en) * | 2012-10-15 | 2013-04-17 | 三一重型装备有限公司 | Crushing station and supporting mechanism thereof |
| CN206128149U (en) * | 2016-08-30 | 2017-04-26 | 山东胜伟园林科技有限公司 | Hydraulic control's excavator |
| CN106703107A (en) * | 2016-12-23 | 2017-05-24 | 柳州柳工挖掘机有限公司 | Excavator |
| CN107553432A (en) * | 2017-09-08 | 2018-01-09 | 燕山大学 | A kind of heavily loaded three-dimensional turntable for balancing tilting moment |
| CN109577411A (en) * | 2017-09-28 | 2019-04-05 | 谢建光 | A kind of swing ring plate structure for heavy construction equipment |
| CN210140866U (en) * | 2019-01-23 | 2020-03-13 | 王佳婷 | Buffering device of single-bucket excavator |
| CN109869174A (en) * | 2019-03-12 | 2019-06-11 | 山西华翌盛安全环境评价有限公司 | Track self-shifting formula gib operates trolley |
| CN210002471U (en) * | 2019-04-01 | 2020-01-31 | 宁波东液传动科技有限公司 | slewing reducer mounting base structure for hydraulic excavator |
| CN212269299U (en) * | 2020-04-26 | 2021-01-01 | 江苏格雷特重工科技发展有限公司 | Protection device for telescopic boom of crane |
| CN213868027U (en) * | 2020-10-20 | 2021-08-03 | 济宁众一机械设备有限公司 | Excavator rotating platform |
| CN214169220U (en) * | 2020-12-22 | 2021-09-10 | 惠州联合阀控液压技术有限公司 | Structure for reducing vibration noise of multi-way valve applied to excavator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114293987A (en) | 2022-04-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102774435A (en) | Drive tumbler, track drive, and track connection and tensioning system | |
| CN106437511B (en) | A kind of modular multi-function drill jumbo system | |
| CN201761901U (en) | Chain bucket conveying system and guide rail device | |
| CN114293987B (en) | Wheel bucket excavator suitable for excavating harder materials | |
| CN106808178A (en) | Brake pump gland feeder | |
| CN101786540B (en) | Heavy duty plate feeder capable of realizing smooth transmission | |
| CN114320300B (en) | Wheel bucket excavator suitable for excavating viscous materials | |
| US7611007B2 (en) | Conveyer system with an offset bush | |
| CN114314031B (en) | Arched discharge arm with variable cross-section for wheel bucket excavator | |
| CN210794643U (en) | Frame body and bridge type reversed loader | |
| CN201559956U (en) | Belt conveyer | |
| CN215286928U (en) | Plate-type ore feeder for titanium ore | |
| CN102897492A (en) | Eccentric based lightweight walking beam conveyor | |
| CN205400783U (en) | Hydraulic support and for hydraulic support back timber | |
| CN211870562U (en) | Crawler-type conveying device | |
| CN111439526B (en) | Mattress conveying mechanism easy to assemble and disassemble | |
| CN210012469U (en) | Moving sidewalk conveying mechanism | |
| CN114197551B (en) | Discharge arm slewing mechanism for wheel bucket excavator | |
| CN211496074U (en) | Rotary assembly of bucket-wheel stacker reclaimer | |
| CN2901259Y (en) | Electronic belt scale | |
| CN209457870U (en) | Coal mine drilling machine quick moving device | |
| CN211919977U (en) | Cantilever type receiving vehicle for realizing continuous operation | |
| CN201870120U (en) | Modularized transmission mechanism and moving base for serried cabinet | |
| KR930000935B1 (en) | Multi-axle motor vehicle with a body | |
| CN220702258U (en) | Conveying device and heading machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |