A rotary excavation assembly and an excavation device having the assembly

Abstract

The present invention relates to the technical field of small metal parts for excavation components, in particular to a rotary excavation assembly and an excavation device having the assembly, including an arm mounted on an excavator body, a slewing unit is mounted at the end of the arm, a bucket cylinder group is mounted at the end of the slewing unit, and the end of the bucket cylinder group is mounted on the rear side wall of a bucket assembly. The bucket assembly includes a bucket part at the front end and a mixing part at the rear end. After the installation and positioning are completed, the inclination angle of the arm can be adjusted and locked by relying on the boom drive configured on the excavator; by using the first slewing bearing and the second slewing bearing designed in this application and cooperating with the boom configured on the excavator, the multi-angle adjustment and locking control of the rotary excavation assembly can be completed, effectively completing the adjustment and positioning of excavation, mixing, foundation pit rolling, and foundation pit side wall reaming.

Description

Technical Field

[0001] The present invention relates to the technical field of small metal parts for excavation components, and in particular to a rotary excavation assembly and an excavation device having the assembly. Background Art

[0002] Excavation devices are a type of mechanical equipment for excavation, extraction of soil, ore or other materials. Traditional excavation devices are mainly excavators, and their main structures include a power device, a boom, a forearm, a shovel-tooth bucket, as well as a slewing mechanism, a transmission mechanism, a traveling mechanism and other main structures.

[0003] Among them, the shovel-tooth bucket, as a small metal part for excavation components, plays a key role in the excavation process. After retrieval, in the patent document with the patent application number CN202020255061.3 and the IPC classification number E02F9 / 28(20060101), a shovel bucket with shovel teeth that are easy to crush soil and stone is disclosed. Its structure includes a bucket, shovel teeth, a tooth seat, a slot, a clamping block, a clamping groove, a gravel knife, a soil-breaking tooth, a threaded rod, a rotating member, a nut block, an L-shaped rod, a stop block, a screwing block, a soil-shoveling plate and other main components.

[0004] It can be seen that the above-mentioned shovel bucket realizes the fixation and rapid replacement of the shovel teeth by setting a moving mechanism in cooperation with the screwing block. However, the rear end of the entire shovel tooth still uses the traditional bucket structure. This structural form can only realize downward inclined excavation of the ground when cooperating with the excavation components to perform excavation operations. When dealing with working conditions where small-sized foundation pits need to be dug on the ground (for example: in the forestry field, circular foundation pits need to be dug for transplanting, in the construction field, square pre-embedded pouring foundation pits or small drainage ditch foundation pits, etc.), there are difficulties. When relying solely on the excavator for operation, the amount of soil in the foundation pit is large and subsequent manual or other machinery is required to complete the cleaning. The cleaning operation is difficult and the cleaning efficiency is low.

[0005] Based on this, the present invention hereby proposes a rotary excavation assembly that can cooperate with an excavation device to achieve flexible excavation construction and an excavation device configured with the assembly, so as to better solve the problems existing in the prior art. Summary of the Invention

[0006] In order to solve one of the above technical problems, the technical solution adopted by the present invention is: a rotary excavation assembly, including a dipper stick installed on an excavator body, a slewing unit is installed at the end of the dipper stick, a bucket cylinder group is installed at the end of the slewing unit, the end of the bucket cylinder group is installed on the rear side wall of a bucket assembly, the bucket assembly includes a bucket part at the front end and a mixing part at the rear end, the interior of the mixing part is communicated with the excavation cavity of the bucket part, and the bucket assembly has a digging state and a stirring state during operation.

[0007] Preferably, in any of the above solutions, the slewing unit includes a first slewing bearing and a second slewing bearing. The first fixing part of the first slewing bearing is fixedly installed at the end of the dipper arm. The first rotating part of the first slewing bearing is fixedly connected to the second fixing part of the second slewing bearing through a linkage disc. The second rotating part of the second slewing bearing is connected to the bucket cylinder group. The central axis of the first rotating part of the first slewing bearing is perpendicular to the central axis of the second rotating part of the first slewing bearing.

[0008] Preferably, in any of the above solutions, at least one telescopic cylinder is fixedly installed on the outer side wall of the second fixing part of the second slewing bearing. The end of the piston rod of the telescopic cylinder is fixedly installed with a locking disc. The end of the locking disc abuts against the outer side wall of the first rotating part of the first slewing bearing in the working state.

[0009] Preferably, in any of the above solutions, the bucket member includes a bucket body. An excavation cavity is provided inside the bucket body. A mixing member is provided at the rear side of the excavation cavity. The rear end of the excavation cavity is communicated with the mixing cavity of the mixing member. A linkage shaft is installed inside the excavation cavity. Both ends of the linkage shaft respectively project out of the excavation cavity movably. One end of the linkage shaft is connected to the output end of a driving transmission member. The input end of the driving transmission member is installed on the bucket body.

[0010] Preferably, in any of the above solutions, a plurality of excavation teeth are sequentially and spacedly bolted and fixedly installed along the length direction on the excavation part at the front bottom of the bucket body.

[0011] Preferably, in any of the above solutions, the other end of the linkage shaft is connected to a foundation pit rolling unit. In the working state, the bottom of the foundation pit rolling unit abuts against the bottom of the currently excavated foundation pit and is used for rolling and compacting the bottom thereof.

[0012] Preferably, in any of the above solutions, the foundation pit rolling unit includes a mounting frame fixedly installed on the corresponding end face of the bucket body. A roller shaft is installed in the mounting cavity of the mounting frame. Both ends of the roller shaft respectively project out of the mounting cavity movably. A driven bevel gear is coaxially and fixedly installed on the outer side wall of the roller shaft. A first compaction steel cylinder and a second compaction steel cylinder are respectively installed on the outer side wall of the roller shaft on both sides of the driven bevel gear. The outer diameters of the first compaction steel cylinder and the second compaction steel cylinder are the same. A driving bevel gear meshing with the driven bevel gear is fixedly installed at the end of the linkage shaft.

[0013] Preferably, in any of the above solutions, the driving transmission member includes a fixing frame fixedly installed on the side wall of the corresponding end of the bucket body. A driving motor is fixedly installed in the installation cavity of the fixing frame. A transmission pulley is installed at the output shaft of the driving motor. The end of the central axis of the transmission pulley is coaxially and fixedly connected to the mixing member. A driven pulley is arranged on one side of the transmission pulley. The driven pulley is fixedly installed at the end of the linkage shaft. A toothed belt is cooperatively installed between the transmission pulley and the driven pulley.

[0014] Preferably, in any of the above solutions, the mixing member includes a mixing bin cooperatively installed at the rear side of the excavation cavity of the bucket body. A mixing cavity communicating with the excavation cavity is arranged inside the mixing bin. A stirring shaft is arranged inside the mixing cavity. Both ends of the stirring shaft respectively extend out of the mixing cavity movably. One end of the stirring shaft is fixedly connected to the central axis of the transmission pulley. A plurality of stirring teeth are fixedly installed at intervals along the axial direction on the outer side wall of the stirring shaft.

[0015] Preferably, in any of the above solutions, the bucket cylinder group includes a plurality of first oil cylinder arms and second oil cylinder arms arranged at intervals. The front ends of the first oil cylinder arms are movably hinged on the first rear ear seats fixedly connected to the outer side wall at the rear side of the mixing bin. The front ends of the second oil cylinder arms are movably hinged on the second rear ear seats fixedly connected to the outer side wall at the rear side of the mixing bin. The rear ends of the first oil cylinder arms are movably hinged on the first front ear seats fixedly connected to the second rotating part of the second slewing bearing. The front ends of the second oil cylinder arms are movably hinged on the second front ear seats fixedly connected to the second rotating part of the second slewing bearing.

[0016] The present invention also provides an excavating device with a rotary excavating assembly, and the excavating device includes the rotary excavating assembly as described above.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. The rotary excavating assembly in the present invention can be directly installed on the boom of an existing excavator, which is convenient for installing and positioning the whole structure. After the installation and positioning are completed, the inclination angle of the boom can be adjusted and locked by relying on the boom drive configured on the excavator. The first slewing bearing and the second slewing bearing designed in this application cooperate with the boom configured on the excavator to complete the control of multi-angle adjustment and locking of the rotary excavating assembly, effectively completing the adjustment and positioning of excavation, mixing, foundation pit rolling, and foundation pit side wall reaming.

[0019] 2. When conducting excavation in the present invention, the first slewing bearing and the second slewing bearing are locked. Only by controlling the telescopic movement of the bucket cylinder group to adjust the inclination angle of the bucket member during excavation, and cooperating with the control of the inclination angle of the stick by the external excavator body, the opening of the excavation cavity is made downward. The bucket member uses each excavation tooth on the bucket body to excavate the ground or soil pile downward to achieve the conventional excavation function.

[0020] 3. After the excavation of the caked soil pile is completed in the present invention, the caked materials entering the interior of the excavation cavity can be directly sent into the mixing cavity, and the mixing member is used to quickly crush the caked materials inside. After the treatment is completed, the present rotary excavation assembly is directly used to transfer the materials downstream, without the need to enter additional crushing equipment to complete the crushing operation, effectively reducing the number of material turnovers and improving the transfer efficiency of the materials after excavation.

[0021] 4. When the ground excavation is completed using the rotary excavation assembly of the present invention, a foundation pit will be formed on the ground. When there are processing requirements for the size or inner wall of the foundation pit, by using the steering adjustment of the first slewing bearing and the second slewing bearing of the present invention in cooperation with the adjustment of the inclination angle of the stick, the adjustment of the bucket body in the vertical plane can be controlled to make the bucket body in a vertical state. At this time, the excavation teeth at the end of the bucket body can be in a spaced state from top to bottom and press against the bottom of the foundation pit under the action of the foundation pit rolling unit. Continue to control the rotation of the first slewing bearing and lock the second slewing bearing. At this time, with the center line of the rotating part of the first slewing bearing as the center and the excavation teeth as the scrapers for scraping the side wall of the foundation pit, the fine adjustment of the inner wall of the foundation pit can be completed, and the compaction treatment of the bottom of the foundation pit is realized while the side wall of the foundation pit is finely adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components do not necessarily draw according to the actual scale.

[0023] Figure 1 It is the front view structural schematic diagram of the present invention in the state of foundation pit treatment.

[0024] Figure 2 It is for the Figure 1 partial top view structural schematic diagram of the present invention.

[0025] Figure 3 It is the structural schematic diagram of the mixing member of the present invention in the working state.

[0026] Figure 4 It is the internal sectional view structural schematic diagram of the bucket member of the present invention.

[0027] Figure 5 Schematic diagram of the internal partial structure of the mixing member of the present invention.

[0028] In the figure, 1 is the stick; 2 is the bucket member; 201 is the excavation cavity; 202 is the bucket body; 203 is the excavation tooth; 3 is the mixing member; 301 is the mixing cavity; 302 is the mixing bin; 303 is the mixing shaft; 304 is the mixing tooth; 4 is the first slewing bearing; 401 is the first rotating part; 402 is the first fixed part; 5 is the second slewing bearing; 501 is the second fixed part; 502 is the second rotating part; 6 is the linkage disk; 7 is the telescopic cylinder; 8 is the locking disk; 9 is the fixing frame; 10 is the driving motor; 11 is the driving pulley; 12 is the driven pulley; 13 is the toothed belt; 14 is the first oil cylinder arm; 15 is the second oil cylinder arm; 16 is the first rear ear seat; 17 is the second rear ear seat; 18 is the mounting frame; 19 is the roller shaft; 20 is the driven bevel gear; 21 is the first compaction steel cylinder; 22 is the second compaction steel cylinder; 23 is the driving bevel gear; 24 is the foundation pit; 25 is the first front ear seat; 26 is the second front ear seat. Specific embodiments

[0029] The embodiments of the technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention. The specific structure of the present invention is as Figures 1-5 shown.

[0030] Embodiment 1: A rotary excavation assembly includes a stick 1 installed on an excavator body. A slewing unit is installed at the end of the stick 1, a bucket cylinder group is installed at the end of the slewing unit, and the end of the bucket cylinder group is installed on the rear side wall of the bucket assembly. The bucket assembly includes a bucket member 2 at the front end and a mixing member 3 at the rear end. The interior of the mixing member 3 is communicated with the excavation cavity 201 of the bucket member 2. The bucket assembly has an excavation state and a mixing state during operation.

[0031] It should be noted that: The rotary excavation assembly relies on the existing stick 1 to connect with the excavator body. During the operation of the entire assembly, the slewing unit can cooperate with the adjustment of the inclination angle of the stick 1 to achieve rotary positioning on different planes. This positioning method can achieve the adjustment of the inclination angle of the bucket member 2 and the mixing member 3 in the downward excavation state, and at the same time can control the axial rotation of the bucket member 2 to achieve the positioning of the bucket member 2 in the vertical plane, so as to achieve excavation and precise repair of the foundation pit (that is, the comprehensive treatment of scraping the side wall of the foundation pit and compacting the bottom of the foundation pit).

[0032] Preferably, in any of the above solutions, the slewing unit includes a first slewing bearing 4 and a second slewing bearing 5. The first fixed part 402 of the first slewing bearing 4 is fixedly installed at the end of the dipper arm 1. The first rotating part 401 of the first slewing bearing 4 is fixedly connected to the second fixed part 501 of the second slewing bearing 5 through a linkage disk 6. The second rotating part 502 of the second slewing bearing 5 is connected to the bucket cylinder group. The central axis of the first rotating part 401 of the first slewing bearing 4 is perpendicular to the central axis of the second rotating part 502 of the first slewing bearing 4.

[0033] When the slewing unit works, the slewing control of the bucket assembly is realized by the independent operation and mutual cooperation of the first slewing bearing 4 and the second slewing bearing 5. Since the central axis of the first rotating part 401 of the first slewing bearing 4 is perpendicular to the central axis of the second rotating part 502 of the first slewing bearing 4, the bucket assembly can be adjusted and controlled at multiple three-dimensional angles, improving its free adjustment range.

[0034] Preferably, in any of the above solutions, at least one telescopic cylinder 7 is fixedly installed on the outer side wall of the second fixed part 501 of the second slewing bearing 5. The end of the piston rod of the telescopic cylinder 7 is fixedly installed with a locking disk 8. In the working state, the end of the locking disk 8 abuts against the outer side wall of the first rotating part 401 of the first slewing bearing 4.

[0035] Considering the firmness of the first slewing bearing 4 and the second slewing bearing 5 when locked, the telescopic movement of the telescopic cylinder 7 drives the locking disk 8 to tightly abut against the outer side wall of the first rotating part 401 of the first slewing bearing 4, thus ensuring the relative stability of the two.

[0036] Preferably, in any of the above solutions, the bucket member 2 includes a bucket body 202. An excavation cavity 201 is arranged inside the bucket body 202. A mixing member 3 is arranged at the rear side of the excavation cavity 201. The rear end of the excavation cavity 201 is communicated with the mixing cavity 301 of the mixing member 3. A linkage shaft 202 is installed inside the excavation cavity 201. Both ends of the linkage shaft 202 respectively extend out of the excavation cavity 201 movably. One end of the linkage shaft 202 is connected to the output end of a driving transmission member, and the input end of the driving transmission member is installed on the bucket body 202.

[0037] Preferably, in any of the above solutions, a plurality of excavation teeth 203 are sequentially and spacedly bolted and fixedly installed along the length direction on the excavation part at the front bottom of the bucket body 202.

[0038] In the present invention, the bucket body 202 of the bucket member 2 relies on the excavation teeth 203 at the front end to achieve downward excavation, improving the soil excavation effect. After the excavation is completed, the freshly excavated soil directly enters the interior of the excavation cavity 201. By further adjusting the inclination angle of the bucket member 2, the mixing member 3 can be positioned below. At this time, under the action of gravity, the freshly excavated soil will enter the interior of the mixing cavity 301 of the mixing member 3 and complete sufficient crushing treatment within the mixing cavity 301.

[0039] The operation of the mixing member 3 mainly relies on the power of the driving transmission member. When the driving transmission member is operating, it further stirs the freshly excavated soil after the excavation process, achieving the purpose of directly eliminating the need for the existing mixing equipment.

[0040] In any of the above solutions, preferably, the other end of the linkage shaft 202 is connected to a foundation pit rolling unit. In the working state, the bottom of the foundation pit rolling unit abuts against the bottom of the currently excavated foundation pit 24 and is used to roll and compact its bottom.

[0041] The linkage shaft 202 is mainly used to receive the power of the driving transmission member and drive the operation of the foundation pit rolling unit by relying on its power, thereby achieving the purpose of compacting the bottom of the foundation pit by the foundation pit rolling unit.

[0042] In any of the above solutions, preferably, the driving transmission member includes a fixed frame 9 fixedly installed on the side wall of the corresponding end of the bucket body 202. A driving motor 10 is fixedly installed in the installation cavity of the fixed frame 9. A transmission pulley 11 is installed at the output shaft of the driving motor 10. The end of the central axis of the transmission pulley 11 is coaxially fixed to the mixing member 3. A driven pulley 12 is arranged on one side of the transmission pulley 11. The driven pulley 12 is fixedly installed at the end of the linkage shaft 202. A toothed belt 13 is cooperatively installed between the transmission pulley 11 and the driven pulley 12.

[0043] The driving transmission member relies on the driving motor 10 as the single power. When the driving transmission member is operating, it can not only drive the mixing member 3, but also transfer the power to the foundation pit rolling unit through the combined operation of the transmission pulley 11, the toothed belt 13, and the driven pulley 12 by relying on the linkage shaft 202, thereby realizing the function of single power dual drive.

[0044] Preferably, in any of the above solutions, the mixing member 3 includes a mixing bin 302 fitted and installed at the rear side of the excavation cavity 201 of the bucket body 202. A mixing cavity 301 communicating with the excavation cavity 201 is arranged inside the mixing bin 302. A stirring shaft 303 is arranged inside the mixing cavity 301. Both ends of the stirring shaft 303 respectively pass through the outside of the mixing cavity 301 movably. One end of the stirring shaft 303 is fixedly connected to the central shaft of the transmission belt pulley 11. A plurality of stirring teeth 304 are fixedly installed at intervals along the axial direction on the outer side wall of the stirring shaft 303.

[0045] The mixing member 3 mainly relies on the mixing cavity 301 inside the mixing bin 302 to receive the fresh soil conveyed from the adjacent excavation cavity 201 inside. After the fresh soil enters the mixing cavity 301, it is fully stirred and broken by the mixing and stirring action of the stirring shaft 303 and the stirring teeth 304, effectively removing the lumps in the excavated fresh soil, effectively meeting the requirements of the usage scenarios with requirements for the particle size of the excavated soil, avoiding the subsequent process of transferring to the mixing equipment, effectively simplifying the fresh soil treatment process, reducing the frequent transposition between equipment, and reducing the problem of congestion in the narrow construction site caused by the arrangement of multiple equipment.

[0046] Preferably, in any of the above solutions, the bucket cylinder group includes a plurality of first oil cylinder arms 14 and second oil cylinder arms 15 arranged at intervals. The front ends of the first oil cylinder arms 14 are all movably hinged on the first rear ear seats 16 fixedly connected to the outer side wall at the rear side of the mixing bin 302. The front ends of the second oil cylinder arms 15 are all movably hinged on the second rear ear seats 17 fixedly connected to the outer side wall at the rear side of the mixing bin 302. The rear ends of the first oil cylinder arms 14 are all movably hinged on the first front ear seats 25 fixedly connected to the second rotating part of the second slewing bearing 5. The front ends of the second oil cylinder arms 15 are all movably hinged on the second front ear seats 26 fixedly connected to the second rotating part 502 of the second slewing bearing 5.

[0047] Both ends of the first oil cylinder arm 14 and the second oil cylinder arm 15 in the bucket cylinder group are in a hinged state and there is a certain inclination angle between them. By controlling the telescoping of the first oil cylinder arm 14 and the second oil cylinder arm 15, the inclination angle of the bucket assembly can be controlled, effectively ensuring the adjustment position requirements during the excavation operation.

[0048] The present invention also provides an excavating device with a rotating excavation assembly, and the excavating device includes the rotating excavation assembly as described above.

[0049] Embodiment 2: Preferably, in any of the above solutions, the foundation pit rolling unit includes a mounting frame 18 fixedly installed on the corresponding end surface of the bucket body 202. A roller shaft 19 is movably installed in the installation cavity of the mounting frame 18. Both ends of the roller shaft 19 respectively project out of the installation cavity movably. A driven bevel gear 20 is coaxially and fixedly installed on the outer side wall of the roller shaft 19. A first compaction steel cylinder 21 and a second compaction steel cylinder 22 are respectively installed on the outer side walls of the roller shaft 19 on both sides of the driven bevel gear 20. The outer diameters of the first compaction steel cylinder 21 and the second compaction steel cylinder 22 are the same. A driving bevel gear 23 meshing with the driven bevel gear 20 is fixedly installed at the end of the linkage shaft 202.

[0050] It should be noted that: The foundation pit rolling unit is mainly used to complete the operation and treatment in the construction scenario of earthwork foundation pits when there are construction requirements. The roller shaft 19 is relied on to drive the entire first compaction steel cylinder 21 and second compaction steel cylinder 22 to rotate. The rotation of the roller shaft 19 mainly uses the transmission of the driving bevel gear 23 and the driven bevel gear 20 to complete the downstream transmission of the power received by the upstream driving motor 10 of the linkage shaft 202. During the rolling process of the first compaction steel cylinder 21 and the second compaction steel cylinder 22, they are placed inside the foundation pit and pressed tightly against the bottom of the foundation pit, so as to complete the compaction treatment of the ground at the bottom of the foundation pit.

[0051] In addition, considering that when dealing with the foundation pit, not only the bottom needs to be treated, but also the inner side wall of the foundation pit with a certain depth needs to be scraped and the side wall needs to be cleaned. Therefore, while ensuring the pressing of the first compaction steel cylinder 21 and the second compaction steel cylinder 22, controlling the rotation of the rotating part of the first slewing bearing 4 with the center of the rotating part as the center, and being able to use the length from each digging tooth 203 in the set state to the center as the radius, controlling the rotation of the rotating part of the first slewing bearing 4 can enable the digging teeth 203 to complete scraping of the inner side wall of the foundation pit. According to the size of the inner side wall of the current foundation pit, controlling the extension length of the current bucket cylinder group can ensure that the digging teeth 203 can always press tightly against the inner side wall of the foundation pit for scraping.

[0052] Specific working principle: The rotary excavation assembly in the present invention relies on the existing dipper arm 1 to connect with the excavator body. When the entire assembly works, the slewing unit can cooperate with the adjustment of the inclination angle of the dipper arm 1 to achieve rotary positioning on different planes. This positioning method can achieve the adjustment of the inclination angle of the bucket part 2 and the mixing part 3 in the downward excavation state, and at the same time can control the axial rotation of the bucket part 2 to achieve the positioning of the bucket part 2 in the vertical plane, so as to achieve excavation and fine repair of the foundation pit (that is, the comprehensive treatment of scraping the side wall of the foundation pit and compacting the bottom of the foundation pit).

[0053] During specific operation, the slewing unit relies on the independent operation and mutual cooperation of the first slewing bearing 4 and the second slewing bearing 5 to achieve the position adjustment control of the bucket assembly. Since the central axis of the first rotating part 401 of the first slewing bearing 4 is perpendicular to the central axis of the second rotating part 502 of the first slewing bearing 4, the bucket assembly can be adjusted in multiple three-dimensional angles, improving its free adjustment range.

[0054] During excavation work, the bucket body 202 of the bucket member 2 relies on the excavation teeth 203 at the front end to achieve downward excavation, improving the soil excavation effect. After the excavation is completed, the excavated loose soil directly enters the inside of the excavation cavity 201. Continuing to adjust the inclination angle of the bucket member 2 can make the mixing member 3 located below. At this time, the loose soil will enter the inside of the mixing cavity 301 of the mixing member 3 under the action of gravity and complete sufficient crushing treatment inside the mixing cavity 301. In addition, the mixing member 3 mainly works by relying on the power of the drive transmission member. When the drive transmission member works, it further stirs the loose soil after excavation treatment, achieving the purpose of directly eliminating the need for existing mixing equipment.

[0055] In summary, it can be seen that the rotary excavation assembly in the present invention can be directly installed on the boom 1 of the existing excavator, facilitating the installation and positioning of the entire structure; after the installation and positioning are completed, it can rely on the boom drive configured on the excavator to complete the position adjustment and locking of the inclination angle of the boom 1; using the first slewing bearing 4 and the second slewing bearing 5 designed in this application and cooperating with the boom configured on the excavator can complete the control of multi-angle position adjustment and locking of this rotary excavation assembly, effectively completing the adjustment and positioning of excavation, mixing, foundation pit rolling, and foundation pit side wall reaming; when excavating, lock the first slewing bearing 4 and the second slewing bearing 5, and only by controlling the telescopic movement of the bucket cylinder group to adjust the inclination angle of the bucket member 2 during excavation, and cooperating with the control of the inclination angle of the boom 1 by the external excavator body, make the opening of the excavation cavity 201 face downward. The bucket member 2 uses the respective excavation teeth 203 on the bucket body 202 to achieve downward excavation of the ground or soil pile to achieve the conventional excavation function.

[0056] After the excavation of the caked soil heap is completed, the caked materials entering the interior of the excavation chamber 201 can be directly fed into the mixing chamber 301, and the mixing member 3 can be used to quickly crush the caked materials inside. After the treatment is completed, the materials can be directly transferred downstream by using this rotary excavation assembly, without the need to enter the crushing equipment additionally to complete the crushing operation, effectively reducing the number of material transfers and improving the transfer efficiency of the materials after excavation; when the ground excavation is completed by using the rotary excavation assembly of the present invention, a foundation pit will be formed on the ground. When there are processing requirements for the size or the inner wall of the foundation pit, the steering adjustment of the first slewing bearing 4 and the second slewing bearing 5 of the present invention in cooperation with the adjustment of the inclination angle of the dipper stick 1 can control the adjustment of the bucket body 202 in the vertical plane, so that the bucket body 202 is in a vertical state. At this time, the cutting teeth 203 at the end of the bucket body 202 can be in a spaced state from top to bottom, and under the action of the foundation pit rolling unit, they are pressed against the bottom of the foundation pit. Continue to control the first slewing bearing 4 to rotate and the second slewing bearing 5 to lock. At this time, with the center line of the rotating part of the first slewing bearing 4 as the center and the cutting teeth 203 as the scraper for scraping the side wall of the foundation pit, the fine adjustment of the inner wall of the foundation pit can be completed. While the side wall of the foundation pit is finely adjusted, the compaction treatment of the bottom of the foundation pit is realized.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention; for those skilled in the art of this technology, any alternative improvement or transformation made to the embodiments of the present invention falls within the protection scope of the present invention.

[0058] The parts not detailed in the present invention are all well-known technologies to those skilled in the art of this technology.

Claims

1. A rotary excavation assembly, comprising a boom mounted on an excavator body, characterized in that: A slewing unit is installed at the end of the boom, a bucket cylinder group is installed at the end of the slewing unit, the end of the bucket cylinder group is installed on the rear side wall of the bucket assembly, the bucket assembly includes a bucket piece at the front end and a mixing piece at the rear end, the interior of the mixing piece is connected to the digging cavity of the bucket piece, and the bucket assembly has an excavation state and a mixing state when working; the slewing unit includes a first slewing bearing and a second slewing bearing, the first fixed part of the first slewing bearing is fixed to the end of the boom, the first rotating part of the first slewing bearing is fixedly connected to the second fixed part of the second slewing bearing through a linkage plate, the second rotating part of the second slewing bearing is connected to the bucket cylinder group, and the central axis of the first rotating part of the first slewing bearing and the central axis of the second rotating part of the second slewing bearing are perpendicular to each other; The bucket member comprises a bucket body, an excavation cavity is arranged inside the bucket body, the mixing member is arranged at the rear side of the excavation cavity, the rear end of the excavation cavity is communicated with the mixing cavity of the mixing member, a linkage shaft is installed inside the excavation cavity, both ends of the linkage shaft are movably extended to the outside of the excavation cavity, one end of the linkage shaft is connected to the output end of a driving transmission member, and the input end of the driving transmission member is installed on the bucket body; The driving transmission member comprises a fixing frame fixed on the side wall of the corresponding end of the bucket body, a driving motor is fixed in the mounting cavity of the fixing frame, a driving pulley is installed at the output shaft of the driving motor, the central axis end of the driving pulley is coaxially fixedly connected with the mixing member, a driven pulley is provided on one side of the driving pulley, the driven pulley is fixed at the end of the linkage shaft, and a toothed belt is installed between the driving pulley and the driven pulley; The mixing element comprises a mixing chamber mounted on the rear side of the digging chamber of the bucket body, a mixing chamber connected to the digging chamber is provided inside the mixing chamber, a mixing shaft is provided inside the mixing chamber, two ends of the mixing shaft are respectively movable to the outside of the mixing chamber, one end of the mixing shaft is fixedly connected to the central axis of the driving pulley, and a plurality of mixing teeth are fixed in sequence along the axial direction on the outer side wall of the mixing shaft; The bucket cylinder group includes a plurality of first cylinder arms and second cylinder arms arranged at intervals, the front end of each of the first cylinder arms is movably hinged on the first rear ear seat fixedly connected to the outer wall of the rear side of the mixing bin, the front end of each of the second cylinder arms is movably hinged on the second rear ear seat fixedly connected to the outer wall of the rear side of the mixing bin, the rear end of each of the first cylinder arms is movably hinged on the first front ear seat fixedly connected to the second rotating part of the second slewing bearing, and the front end of each of the second cylinder arms is movably hinged on the second front ear seat fixedly connected to the second rotating part of the second slewing bearing.

2. A rotary excavation assembly according to claim 1, characterized in that: At least one telescopic cylinder is fixedly mounted on the outer side wall of the second fixed part of the second slewing bearing, a locking plate is fixedly mounted on the end of the piston rod of the telescopic cylinder, and the end of the locking plate abuts against the outer side wall of the first rotating part of the first slewing bearing in the working state.

3. A rotary excavation assembly according to claim 2, characterized in that: A plurality of digging teeth are bolted and fixedly installed at intervals in sequence along the length direction of the digging portion at the bottom of the front end of the bucket body.

4. A rotary excavation assembly according to claim 3, characterized in that: The other end of the linkage shaft is connected to a foundation pit rolling unit. In a working state, the bottom of the foundation pit rolling unit abuts against the bottom of the currently excavated foundation pit and is used to complete rolling compaction of the bottom.

5. An excavation device having a rotating excavation assembly, characterized in that: The excavating equipment comprises a rotary excavating assembly as claimed in any one of claims 1-4.

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