CN112554259A - Ground ditch excavating equipment for building site - Google Patents
Ground ditch excavating equipment for building site Download PDFInfo
- Publication number
- CN112554259A CN112554259A CN202011469802.9A CN202011469802A CN112554259A CN 112554259 A CN112554259 A CN 112554259A CN 202011469802 A CN202011469802 A CN 202011469802A CN 112554259 A CN112554259 A CN 112554259A
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- Prior art keywords
- fixedly connected
- rack
- wheel
- telescopic
- top frame
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/04—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging screws
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses ground ditch excavating equipment for a construction site, which comprises a top frame, wherein supporting legs are arranged at four corners of the lower end of the top frame, moving wheels are arranged at the bottoms of the supporting legs, a mounting disc is arranged below the front part of the top frame, two symmetrical first guide telescopic rods are fixedly connected to the upper end of the mounting disc, the other ends of the first guide telescopic rods are fixedly connected to the lower side of the top frame, two first lifting oil cylinders are arranged at the upper end of the top frame, the telescopic ends of the two first lifting oil cylinders downwards penetrate through the top frame and are fixedly connected to the mounting disc, a mounting groove is formed in the upper end of the mounting disc, a soil loosening mechanism is arranged in the mounting groove, a connecting seat is fixedly connected to the lower side of the middle part of the top frame. The soil loosening mechanism is arranged, so that the digging difficulty is reduced, the digging efficiency is improved, the dug soil can be lifted out of the ditch in time, and the inner wall of the dug ditch is compacted.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to ground ditch excavating equipment for a construction site.
Background
The ditch needs to be excavated in the construction of building site often, when the ground ditch of current building site is excavated, most still adopt the manual work to go on, also adopt artifical handheld digging tool to excavate, artifical excavation work needs a lot of manpowers, and the excavation process is wasted time and energy, and is inefficient, current ditch equipment of digging in addition generally only sets up the digging wheel and replaces the manual work to excavate, but the earth man who excavates needs artifical clearance to go out, and directly excavate through the digging wheel, when meetting the great ground of the degree of adhesion, it is high to excavate the degree of difficulty, and inefficiency, and the ditch wall after the excavation is solid enough, stable.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides ground ditch digging equipment for a construction site.
In order to achieve the purpose, the invention adopts the following technical scheme:
a ground ditch excavating device for a construction site comprises a top frame, wherein supporting legs are arranged at four corners of the lower end of the top frame, moving wheels are installed at the bottoms of the supporting legs, a mounting disc is arranged below the front part of the top frame, two symmetrical first guiding telescopic rods are fixedly connected to the upper end of the mounting disc, the other ends of the first guiding telescopic rods are fixedly connected to the lower side of the top frame, two first lifting oil cylinders are arranged at the upper end of the top frame, the telescopic ends of the two first lifting oil cylinders penetrate through the top frame downwards and are fixedly connected to the mounting disc, a mounting groove is formed in the upper end of the mounting disc, a soil loosening mechanism is arranged in the mounting groove, a connecting seat is fixedly connected to the lower side of the middle part of the top frame, an excavating mechanism is arranged on the connecting seat, a soil lifting pipe is arranged below the rear part of the top frame, two second lifting oil cylinders are arranged on the lower side of the, the soil lifting pipe is characterized in that a soil lifting mechanism is arranged on the inner side of the soil lifting pipe, a scraping mechanism is connected to an opening at the front end of the soil lifting pipe, and a discharging pipe is connected to the rear end of the soil lifting pipe.
Preferably, the mechanism that loosens the soil is including rotating the gear wheel of connection at mounting groove inner wall middle part, mounting disc upper end fixed mounting has first motor, the terminal fixed connection of first motor output shaft is on the bull wheel shaft, mounting groove inner wall edge is connected with a plurality of pinions along the equidistant rotation of gear wheel circumference, and pinion and gear engagement, the epaxial fixedly connected with of pinion is located the drilling rod of mounting disc below.
Preferably, the excavating mechanism comprises a telescopic oil cylinder which is rotatably connected to the connecting seat, an excavating wheel is installed at a telescopic end of the telescopic oil cylinder, a first driven wheel is fixedly connected to an axle of the excavating wheel, a second driven wheel is rotatably connected to the connecting seat, a tensioning oil cylinder is fixedly connected to the telescopic oil cylinder, a tensioning wheel is rotatably connected to a telescopic end of the tensioning oil cylinder, a first transmission belt is sleeved on the first driven wheel, the second driven wheel and the tensioning wheel, a top frame is rotatably connected to the lower side of the top frame, the telescopic end of the top frame is rotatably connected to the telescopic oil cylinder, a second motor is installed on the upper side of the top frame, a driving wheel is fixedly connected to the tail end of an output shaft of the second motor, and the driving wheel and the second driven wheel are.
Preferably, carry native mechanism including installing two and change the roller in carrying native pipe, and two change the roller and install respectively at the front end of carrying native pipe, rear end, two change and connect through the conveyer belt between the roller, the equipartition is carried the hopper on the conveyer belt, carry and install the third motor on the outer wall of native pipe rear end, the rear end the roller of changeing the roller passes through out carries native pipe and fixed connection on third motor output shaft.
Preferably, the scraping mechanism comprises a second guiding telescopic rod fixed on the lower side of the rear portion of the top frame, a scraping frame is fixedly connected to the telescopic end of the second guiding telescopic rod, and the scraping frame is fixedly connected to an opening at the front end of the soil lifting pipe.
Preferably, the rear end the fixed cover of changeing on the roller roll axle has connect incomplete crown gear, carry the below of soil pipe to be equipped with the compacting plate, the equal fixedly connected with movable rod in upper end both sides of compacting plate, carry the fixed cover of equal fixedly connected with on the both sides outer wall of soil pipe, two the movable rod slides respectively and pegs graft in two fixed covers, the fixed stop collar that is located fixed cover top that cup joints on the movable rod, fixedly connected with rack on the movable rod lateral wall, and rack and incomplete crown gear meshing.
Preferably, the moving wheel is an electrically driven wheel.
The invention has the beneficial effects that:
through setting up the mechanism that loosens the soil, start first motor, can drive a plurality of drilling rods and rotate, start the extension of first lift cylinder, can make pivoted drilling rod bore into ground, treat the ground of excavating and carry out drilling in advance for ground adhesion reduces, and is easier when making the digging wheel excavate, and then is convenient for subsequent excavation operation, improves and excavates efficiency.
Through setting up excavation mechanism, start the second motor, can drive the second and rotate from the driving wheel, drive first from the driving wheel rotation, and then drive the digging wheel and rotate and excavate, the flexible hydro-cylinder of top push control turns up or spy down, is convenient for excavate, and the flexible hydro-cylinder of accessible control digging wheel extension length to it is flexible through the tensioning hydro-cylinder, with the flexible length of first drive belt tensioning in order to adapt to the flexible hydro-cylinder difference, satisfy the excavation needs of the different degree of depth.
Through setting up soil lifting mechanism, doctor-bar mechanism, strickle the frame through strickleing off and strickle off to the ditch inside after excavating, start the third motor drive and change the roller and rotate, can drive the conveyer belt and rotate, drive the conveying fill and rotate and promote the soil of excavating to carry soil pipe rear end to arrange to subaerial through the discharging pipe.
Through setting up the compacting plate, when third motor drive changes the roller and rotates, drive incomplete crown gear and rotate, when incomplete crown gear and rack meshing, can make the movable rod shift up, drive the compacting plate and shift up, when incomplete crown gear and rack do not mesh, the compacting plate is impacted the compaction to the irrigation canals and ditches after excavating by the action of gravity whereabouts, and then makes the irrigation canals and ditches inner wall more solid, stable.
The soil loosening mechanism is arranged, so that the digging difficulty is reduced, the digging efficiency is improved, the dug soil can be lifted out of the ditch in time, and the inner wall of the dug ditch is compacted.
Drawings
FIG. 1 is a schematic structural view of an earth trench excavating apparatus for a construction site according to the present invention;
FIG. 2 is a schematic structural view of an inside of a mounting groove of an earth trench excavating apparatus for a construction site according to the present invention;
FIG. 3 is a schematic structural view of a second embodiment of an earth trench excavating apparatus for a construction site according to the present invention;
fig. 4 is a schematic structural view of a compacting plate and a movable bar of a second embodiment of an earth trench excavating apparatus for a construction site according to the present invention.
In the figure: 1 top frame, 2 supporting legs, 3 moving wheels, 4 first guiding telescopic rods, 5 mounting discs, 6 drill rods, 7 first motors, 8 first lifting cylinders, 9 pushing cylinders, 10 telescopic cylinders, 11 digging wheels, 12 first driven wheels, 13 first transmission belts, 14 tensioning wheels, 15 tensioning cylinders, 16 second driven wheels, 17 connecting seats, 18 second motors, 19 driving wheels, 20 second transmission belts, 21 second guiding telescopic rods, 22 second lifting cylinders, 23 scraping frames, 24 soil lifting pipes, 25 rotating rollers, 26 transmission belts, 27 transmission hoppers, 28 third motors, 29 discharge pipes, 30 mounting grooves, 31 pinions, 32 large gears, 33 compacting plates, 34 movable rods, 35 fixed sleeves, 36 limiting sleeves, 37 racks and 38 incomplete crown gears.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1 and 2, a ground ditch excavating device for a construction site comprises a top frame 1, wherein supporting legs 2 are arranged at four corners of the lower end of the top frame 1, moving wheels 3 are arranged at the bottoms of the supporting legs 2, the moving wheels 3 are electric driving wheels, a mounting disc 5 is arranged below the front part of the top frame 1, two symmetrical first guiding telescopic rods 4 are fixedly connected to the upper end of the mounting disc 5, the other end of each first guiding telescopic rod 4 is fixedly connected to the lower side of the top frame 1, two first lifting oil cylinders 8 are arranged at the upper end of the top frame 1, the telescopic ends of the two first lifting oil cylinders 8 downwards penetrate through the top frame 1 and are fixedly connected to the mounting disc 5, a mounting groove 30 is arranged at the upper end of the mounting disc 5, a soil loosening mechanism is arranged in the mounting groove 30, a connecting seat 17 is fixedly connected to the lower side of the middle part of the top frame 1, an excavating mechanism is arranged on the connecting seat 17, a soil, and the telescopic ends of the two second lifting cylinders 22 are fixedly connected to the soil lifting pipe 24, the soil lifting mechanism is arranged on the inner side of the soil lifting pipe 24, the opening at the front end of the soil lifting pipe 24 is connected with the scraping mechanism, the rear end of the soil lifting pipe 24 is connected with the discharge pipe 29, and the discharge pipe 29 inclines to the side of the ditch.
According to the invention, the soil loosening mechanism comprises a large gear 32 which is rotatably connected to the middle part of the inner wall of a mounting groove 30, a first motor 7 is fixedly mounted at the upper end of a mounting plate 5, the tail end of an output shaft of the first motor 7 is fixedly connected to a shaft of the large gear 32, a plurality of small gears 31 are rotatably connected to the edge of the inner wall of the mounting groove 30 at equal intervals along the circumferential direction of the large gear 32, the small gears 31 are meshed with the large gear 32, a drill rod 6 which is positioned below the mounting plate 5 is fixedly connected to the shaft of the small gears 31, the drill rod 6 can drill into the ground, and the ground to be excavated is pre-drilled, so that the ground adhesion degree is.
Specifically, excavation mechanism is including rotating the flexible hydro-cylinder 10 of connection on connecting seat 17, digging wheel 11 is installed to the flexible end of flexible hydro-cylinder 10, digging wheel 11 takes turns to the epaxial fixedly connected with first driven wheel 12 of wheel, connect seat 17 and rotate and be connected with the second from driving wheel 16, fixedly connected with tensioning cylinder 15 on the flexible hydro-cylinder 10, tensioning cylinder 15's flexible end rotates and is connected with the take-up pulley 14, first from driving wheel 12, the second is followed driving wheel 16, first drive belt 13 has been cup jointed on the take-up pulley 14, roof-rack 1 downside rotates and is connected with top push hydro-cylinder 9, and top push hydro-cylinder 9's flexible end rotates and connects on flexible hydro-cylinder 10, second motor 18 is installed to roof-rack 1 upside, second motor 18 output shaft end fixedly connected with action wheel 19, action wheel 19 passes.
Specifically, carry native mechanism including installing two and change roller 25 in carrying soil pipe 24, and two change rollers 25 install respectively at the front end of carrying soil pipe 24, rear end, connect through conveyer belt 26 between two change rollers 25, evenly distribute the hopper 27 on the conveyer belt 26, install third motor 28 on carrying soil pipe 24 rear end outer wall, the roller of the commentaries on classics roller 25 of rear end runs through out and carries soil pipe 24 and fixed connection on third motor 28 output shaft.
Specifically, strickle mechanism including fixing at the second direction telescopic link 21 of roof-rack 1 rear portion downside, the flexible end fixedly connected with of second direction telescopic link 21 strickles frame 23, strickles frame 23 fixed connection and carries the front end opening part of native pipe 24, strickles the soil that frame 23 strickleed off and the soil of excavation, can lead to carrying the native pipe 24 front end opening.
The working principle is as follows: the first motor 7 is started, the plurality of drill rods 6 can be driven to rotate, the first lifting oil cylinder 8 is started to extend, the rotating drill rods 6 can be made to drill into the ground, the ground to be excavated is pre-drilled, the ground adhesion degree is reduced, the excavating wheel 11 is easier to excavate, the second motor 18 is started, the second driven wheel 16 can be driven to rotate, the first driven wheel 12 is driven to rotate, the excavating wheel 11 is driven to rotate to excavate, when the equipment advances through the moving wheel 3, the inside of an excavated ditch is scraped through the scraping frame 23, the third motor 28 is started to drive the rotating roller 25 to rotate, the conveying belt 26 can be driven to rotate, the conveying bucket 27 is driven to rotate, excavated soil is lifted to the rear end of the soil lifting pipe 24, and the excavated soil is discharged to the ground through the discharging pipe 29.
Example two
Referring to fig. 3 and 4, the present embodiment is more advantageous than the first embodiment in that an incomplete crown gear 38 is fixedly sleeved on a roller shaft of the rotating roller 25 at the rear end of the present embodiment, a compacting plate 33 is arranged below the soil lifting pipe 24, movable rods 34 are fixedly connected to both sides of the upper end of the compacting plate 33, fixed sleeves 35 are fixedly connected to both outer walls of both sides of the soil lifting pipe 24, the two movable rods 34 are respectively inserted into the two fixed sleeves 35 in a sliding manner, a limiting sleeve 36 located above the fixed sleeves 35 is fixedly sleeved on the movable rods 34, a rack 37 is fixedly connected to the side wall of each movable rod 34, and the rack 37 is engaged with the incomplete crown gear 38.
When the embodiment works, the third motor 28 drives the rotating roller 25 to rotate, drives the incomplete crown gear 38 to rotate, when the incomplete crown gear 38 is meshed with the rack 37, the movable rod 34 can move upwards to drive the compacting plate 33 to move upwards, and when the incomplete crown gear 38 is not meshed with the rack 37, the compacting plate 33 falls under the action of gravity to impact and compact the dug ditch.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (7)
1. The utility model provides a ground irrigation canals and ditches excavating equipment for building site, includes roof-rack (1), its characterized in that, the lower extreme four corners department of roof-rack (1) all is equipped with landing leg (2), removal wheel (3) are installed to landing leg (2) bottom, the front portion below of roof-rack (1) is equipped with mounting disc (5), two first direction telescopic links (4) of symmetry are fixedly connected with to mounting disc (5) upper end, and the other end fixed connection of first direction telescopic link (4) is in roof-rack (1) downside, roof-rack (1) upper end is equipped with two first lift hydro-cylinders (8), and the flexible end of two first lift hydro-cylinders (8) all runs through roof-rack (1) and fixed connection on mounting disc (5) downwards, mounting groove (30) upper end is equipped with, be equipped with the mechanism that loosens the soil in mounting groove (30), roof-rack (1) middle part downside fixed connection has connecting seat (17), be equipped with on connecting seat (17) and excavate the mechanism, roof-rack (1) rear portion below is equipped with carries native pipe (24), two second lift cylinder (22) are installed to roof-rack (1) rear portion downside, and the equal fixed connection of the flexible end of two second lift cylinder (22) is on carrying native pipe (24), it is equipped with and carries native mechanism to carry native pipe (24) inboard, it is connected with scrapes flat mechanism to carry native pipe (24) front end opening part, it is connected with discharging pipe (29) to carry native pipe (24) rear end.
2. The ground ditch excavating equipment for the construction site as claimed in claim 1, wherein the scarification mechanism comprises a large gear (32) rotatably connected to the middle part of the inner wall of the installation groove (30), the upper end of the installation disc (5) is fixedly provided with a first motor (7), the tail end of an output shaft of the first motor (7) is fixedly connected to the axle of the large gear (32), a plurality of small gears (31) are rotatably connected to the edge of the inner wall of the installation groove (30) along the circumferential direction of the large gear (32) at equal intervals, the small gears (31) are meshed with the large gear (32), and a drill rod (6) positioned below the installation disc (5) is fixedly connected to the axle of the small gears (31).
3. The ground ditch excavating equipment for the construction site according to claim 1, wherein the excavating mechanism comprises a telescopic cylinder (10) rotatably connected to a connecting seat (17), an excavating wheel (11) is installed at the telescopic end of the telescopic cylinder (10), a first driven wheel (12) is fixedly connected to the wheel shaft of the excavating wheel (11), a second driven wheel (16) is rotatably connected to the connecting seat (17), a tensioning cylinder (15) is fixedly connected to the telescopic cylinder (10), a tensioning wheel (14) is rotatably connected to the telescopic end of the tensioning cylinder (15), a first transmission belt (13) is sleeved on the first driven wheel (12), the second driven wheel (16) and the tensioning wheel (14), a jacking cylinder (9) is rotatably connected to the lower side of the top frame (1), and the telescopic end of the jacking cylinder (9) is rotatably connected to the telescopic cylinder (10), a second motor (18) is installed on the upper side of the top frame (1), a driving wheel (19) is fixedly connected to the tail end of an output shaft of the second motor (18), and the driving wheel (19) is in transmission connection with a second driven wheel (16) through a second transmission belt (20).
4. The ground ditch excavating equipment for the construction site according to claim 1, characterized in that the soil lifting mechanism comprises two rotating rollers (25) installed in the soil lifting pipe (24), and the two rotating rollers (25) are respectively installed at the front end and the rear end of the soil lifting pipe (24), two of the rotating rollers (25) are connected through a conveyer belt (26), a conveying hopper (27) is uniformly distributed on the conveyer belt (26), a third motor (28) is installed on the outer wall of the rear end of the soil lifting pipe (24), and the roller shaft of the rotating roller (25) at the rear end penetrates through the soil lifting pipe (24) and is fixedly connected to the output shaft of the third motor (28).
5. The ground ditch excavating equipment for the construction site according to claim 1, wherein the scraping mechanism comprises a second guiding telescopic rod (21) fixed at the lower side of the rear part of the top frame (1), the telescopic end of the second guiding telescopic rod (21) is fixedly connected with a scraping frame (23), and the scraping frame (23) is fixedly connected at the opening of the front end of the soil lifting pipe (24).
6. The ground ditch excavating equipment for the construction site as claimed in claim 4, wherein an incomplete crown gear (38) is fixedly sleeved on the roll shaft of the rotating roll (25) at the rear end, a compacting plate (33) is arranged below the soil lifting pipe (24), movable rods (34) are fixedly connected to both sides of the upper end of the compacting plate (33), fixed sleeves (35) are fixedly connected to the outer walls of both sides of the soil lifting pipe (24), the two movable rods (34) are respectively inserted into the two fixed sleeves (35) in a sliding manner, a limiting sleeve (36) positioned above the fixed sleeves (35) is fixedly sleeved on the movable rods (34), a rack (37) is fixedly connected to the side wall of the movable rods (34), and the rack (37) is meshed with the incomplete crown gear (38).
7. An earth trench excavating equipment for construction sites according to claim 1 wherein the moving wheels (3) are electrically driven wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011469802.9A CN112554259A (en) | 2020-12-14 | 2020-12-14 | Ground ditch excavating equipment for building site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011469802.9A CN112554259A (en) | 2020-12-14 | 2020-12-14 | Ground ditch excavating equipment for building site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112554259A true CN112554259A (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011469802.9A Pending CN112554259A (en) | 2020-12-14 | 2020-12-14 | Ground ditch excavating equipment for building site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112554259A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266050A (en) * | 2021-06-15 | 2021-08-17 | 俞晓辉 | Pipe burying device for communication cable matched with excavator |
| CN115162444A (en) * | 2022-09-06 | 2022-10-11 | 徐州木萱机械制造有限公司 | Ground irrigation canals and ditches excavating equipment for building site |
| CN115404929A (en) * | 2022-09-30 | 2022-11-29 | 彭智远 | Auxiliary laying device for heating ventilation pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266050A (en) * | 2021-06-15 | 2021-08-17 | 俞晓辉 | Pipe burying device for communication cable matched with excavator |
| CN115162444A (en) * | 2022-09-06 | 2022-10-11 | 徐州木萱机械制造有限公司 | Ground irrigation canals and ditches excavating equipment for building site |
| CN115404929A (en) * | 2022-09-30 | 2022-11-29 | 彭智远 | Auxiliary laying device for heating ventilation pipe |
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Application publication date: 20210326 |