CN220789914U - Soil opening equipment - Google Patents

Abstract

The utility model relates to the technical field of geotechnical engineering investigation, in particular to soil opening equipment which comprises a base chassis and crawler-type travelling wheels, wherein the crawler-type travelling wheels are assembled on the front side and the rear side of the base chassis, a lifting mechanism is arranged on the front side of the upper end face of the base chassis, a soil opening cleaning mechanism is arranged on the front side of the lifting mechanism, and a bulldozing mechanism is arranged on the rear side of the base chassis. The crawler-type travelling wheel can drive the device to integrally move, has strong traction force and ground grabbing force, can travel on various complicated terrains, can adapt to different working environments, can perform soil opening cleaning operation on a rock and soil layer through the soil opening cleaning mechanism, is convenient to clean out soil, and is high in soil opening efficiency and high in operation convenience.

Description

Soil opening equipment

Technical Field

The utility model relates to the technical field of geotechnical engineering investigation, in particular to a soil opening device.

Background

Geotechnical engineering investigation refers to a process of performing detailed investigation and analysis of geological conditions such as underground rock and soil. The method is a foundation of geotechnical engineering design, and aims to acquire information about geology, landform, groundwater, seismic activities and the like so as to evaluate the influence of geological conditions on engineering construction and provide necessary data and suggestions for engineering design, construction and operation. The geotechnical engineering investigation aims to provide accurate and reliable geological and soil information for engineering construction so as to ensure the safety and stability of engineering. It is necessary to resort to various survey methods and techniques such as drilling, sampling, geophysical prospecting, remote sensing, etc. to obtain comprehensive and accurate geological data.

When geotechnical engineering investigation is carried out, as the rock layer is positioned below the soil layer, a tool is needed to clean the soil layer out of a region suitable for investigation, so that the rock layer is exposed. Among the prior art, adopt the mode of artifical excavation to open soil clearance to soil layer more, this kind of open soil efficiency is lower, and artifical intensity of labour, and partial engineering investigation adopts mechanical equipment to open soil simultaneously, and open soil mechanical equipment comprises drilling tower, rig, slush pump, drill bit and drilling rod usually, and its structure volume is great, is inconvenient for carrying out the operation of opening soil in the place of topography complicacy, and the simple operation is not enough.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides the soil opening equipment, which solves the problems that in the prior art, a manual excavation mode is mostly adopted to open soil for cleaning soil layers, the soil opening efficiency is low, the manual labor intensity is high, meanwhile, mechanical equipment is adopted for soil opening in part of engineering investigation, the structure volume of the soil opening mechanical equipment is large, the soil opening operation is inconvenient to be carried out in places with complex terrains, and the operation convenience is not high enough.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The utility model provides an equipment of opening soil, includes frame chassis and crawler-type walking wheel, both sides are equipped with crawler-type walking wheel around the frame chassis, frame chassis up end front side is provided with elevating system, elevating system front side is provided with the clearance mechanism of opening soil, frame chassis rear side is provided with bulldozing mechanism.

Further, elevating system includes elevating platform, fixed bolster and unable adjustment base, unable adjustment base passes through bolt fixed mounting on the frame chassis, the fixed bolster has set firmly to the unable adjustment base upside, the inside vertical two sets of location guide arms that are provided with of fixed bolster, location guide arm front side is provided with the elevating platform, the fixed bolster upside is provided with drive assembly.

Further, the elevating platform comprises backup pad, outer frame, elevating slide and sliding sleeve, the backup pad is provided with two sets of and parallel arrangement in location guide arm front side, two sets of both sides all set firmly outer frame around the backup pad, two sets of the backup pad rear side has set firmly elevating slide, the inside inlaying of elevating slide is equipped with the sliding sleeve, just the sliding sleeve cover is located on the location guide arm.

Further, drive assembly includes connecting plate, lift chain, sprocket, motor cabinet, support pivot and pivot seat, the pivot seat passes through the bolt mounting in the fixed bolster top, the inside support pivot that runs through of pivot seat is provided with, both sides all are equipped with the sprocket around the support pivot axle, be equipped with the lift chain on the sprocket, the one end of lift chain is connected to on the connecting plate, just connecting plate and elevating platform welded fastening, the lift chain other end is connected with the counter weight board, the one end of support pivot is equipped with driven pulley, the motor cabinet is fixed in on the unable adjustment base of fixed bolster rear side, be equipped with first gear motor on the motor cabinet, the output of first gear motor runs through the motor cabinet and is equipped with driving pulley on it, driving pulley passes through the driving belt transmission with driven pulley and is connected.

Further, the soil opening and cleaning mechanism comprises a speed reducer, a driving motor, a transmission shaft, a fixed connection device and a drilling head, the speed reducer is assembled on the lifting platform, the driving motor is assembled at the input end of the speed reducer, the output end of the speed reducer penetrates through the lifting platform and stretches out, the output end of the speed reducer is connected with the transmission shaft, the drilling head is arranged on the lower side of the transmission shaft, and the transmission shaft is connected with the drilling head through the fixed connection device.

Further, the pin shafts penetrate through the connecting part of the transmission shaft and the fixed connecting device, the drilling heads are arranged to be of polygonal abnormal structures, a plurality of groups of alloy tool bits are vertically and uniformly arranged at the edge of the side edge of each drilling head, and the outer ends of the alloy tool bits protrude out of the surfaces of the drilling heads.

Further, bulldozing mechanism includes bottom plate, movable hinge device, second gear motor, support arm and bulldozing board, the bottom plate sets firmly on the frame chassis, install the second gear motor through movable hinge device on the bottom plate, the output of second gear motor has the screw rod through the coupling joint, the bottom plate right side is provided with the bulldozing board, the bulldozing board rear side is provided with two sets of gusset, the bulldozing board rear side is provided with the crossbeam support rather than parallel, both ends swing joint has first movable connecting rod around the crossbeam support, first movable connecting rod inboard is provided with first horizontal pole, first horizontal pole downside is provided with the second horizontal pole, first movable connecting rod lower extreme outside is through second movable connecting rod and gusset swing joint.

Further, two groups of supporting arms with inclined structures are arranged on the bottom plate, one end of each supporting arm is fixedly connected with the bottom plate, and the other end of each supporting arm is sleeved on the second cross rod and is connected with the second cross rod in a rotating mode.

Further, a connector is fixedly arranged at the middle position on the first cross rod, and one end of the threaded screw rod penetrates through the connector and is in threaded connection with the connector through threads.

Further, the bulldozer blade is of an arc-shaped structure, and the lower part of the inner side surface of the bulldozer blade is fixedly provided with a wear-resistant lining plate through bolts.

Compared with the prior art, the utility model has the following beneficial effects:

1. The crawler-type travelling wheel can drive the device to integrally move, has strong traction force and ground grabbing force, can travel on various complicated terrains, can adapt to different working environments, can perform soil opening cleaning operation on a rock and soil layer through the soil opening cleaning mechanism, is convenient to clean out soil, and is high in soil opening efficiency and high in operation convenience.

2. According to the utility model, the soil opening cleaning mechanism can be driven to lift and move through the lifting mechanism, so that the excavation depth can be conveniently adjusted and controlled during soil opening, the excavation depth can be accurately controlled, scattered soil can be cleaned after the soil opening is finished through the bulldozing mechanism, the soil is pushed out of the excavated pit, and the soil opening effect on rock and soil is improved.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of a lifting mechanism in the present utility model.

Fig. 3 is a schematic view of another angle structure of the lifting mechanism in the present utility model.

Fig. 4 is a schematic structural view of the soil opening and cleaning mechanism in the present utility model.

Fig. 5 is a schematic view of the bulldozer mechanism according to the present utility model.

FIG. 6 is a schematic view of another angle configuration of the bulldozer mechanism according to the present utility model.

In the figure: 1. a soil opening and cleaning mechanism; 11. a speed reducer; 12. a driving motor; 13. a transmission shaft; 14. a fixed connection device; 141. a pin shaft; 15. a drilling head; 16. alloy tool bit; 2. a lifting mechanism; 21. a lifting table; 211. a support plate; 212. an outer frame; 213. a lifting slide plate; 214. a sliding sleeve; 22. a transmission assembly; 221. a connecting plate; 222. a lifting chain; 223. a sprocket; 224. supporting a rotating shaft; 225. a rotating shaft seat; 226. a driven pulley; 227. a drive belt; 228. a driving pulley; 229. a motor base; 2210. a first gear motor; 2211. a weight plate; 23. positioning a guide rod; 24. a fixed bracket; 25. a fixed base; 3. a base plate of the machine base; 4. crawler-type travelling wheels; 5. a bulldozing mechanism; 51. a bottom plate; 52. a movable hinge device; 53. a second gear motor; 54. a support arm; 55. a bulldozer plate; 551. wear-resistant lining board; 56. a first movable connecting rod; 57. a first cross bar; 58. a connector; 59. a threaded screw rod; 591. a coupling; 510. a cross beam bracket; 511. a second movable connecting rod; 512. rib plates; 513. and a second cross bar.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples:

As shown in fig. 1 to 6, an earth opening device comprises a base chassis 3 and crawler-type travelling wheels 4, wherein the crawler-type travelling wheels 4 are assembled on the front side and the rear side of the base chassis 3, the crawler-type travelling wheels 4 are products in the prior art, the structure and the operation principle of the crawler-type travelling wheels are the prior art, so that details are not repeated here, the front side of the upper end surface of the base chassis 3 is provided with a lifting mechanism 2, the front side of the lifting mechanism 2 is provided with an earth opening cleaning mechanism 1, and the rear side of the base chassis 3 is provided with a bulldozer 5.

In this embodiment, the lifting mechanism 2 includes a lifting platform 21, a fixing bracket 24 and a fixing base 25, the fixing base 25 is fixedly mounted on the chassis 3 of the machine base through bolts, the fixing bracket 24 is fixedly arranged on the upper side of the fixing base 25, two groups of positioning guide rods 23 are vertically arranged in the fixing bracket 24, the lifting platform 21 is arranged on the front side of the positioning guide rods 23, and the transmission assembly 22 is arranged on the upper side of the fixing bracket 24. The lifting mechanism 2 can drive the soil opening cleaning mechanism 1 to lift and move, so that the excavation depth can be conveniently adjusted and controlled during soil opening, and the excavation depth can be accurately controlled.

In this embodiment, the lifting platform 21 is composed of a supporting plate 211, an outer frame 212, a lifting slide plate 213 and a sliding sleeve 214, wherein the supporting plate 211 is provided with two groups of supporting plates and is arranged in parallel on the front side of the positioning guide rod 23, the outer frame 212 is fixedly arranged on the front side and the rear side of the two groups of supporting plates 211, the lifting slide plate 213 is fixedly arranged on the rear side of the two groups of supporting plates 211, the sliding sleeve 214 is embedded in the lifting slide plate 213, and the sliding sleeve 214 is sleeved on the positioning guide rod 23. The lifting platform 21 plays a role in fixedly supporting the soil opening and cleaning mechanism 1, and meanwhile the soil opening and cleaning mechanism 1 can be driven to move up and down, the lifting slide plate 213 can slide on the positioning guide rod 23 through the sliding sleeve 214, so that the lifting function of the lifting platform 21 is realized, and the lifting stability of the lifting platform 21 can be guaranteed.

In this embodiment, the transmission assembly 22 includes a connection plate 221, a lifting chain 222, a sprocket 223, a motor base 229, a supporting rotating shaft 224 and a rotating shaft base 225, the rotating shaft base 225 is mounted on the top of the fixed support 24 through bolts, the supporting rotating shaft base 225 is internally provided with the supporting rotating shaft 224 in a penetrating way, the front side and the rear side of the annular surface of the supporting rotating shaft 224 are both provided with the sprocket 223, the sprocket 223 is provided with the lifting chain 222, one end of the lifting chain 222 is connected to the connection plate 221, the connection plate 221 is welded and fixed with the lifting table 21, the other end of the lifting chain 222 is connected with a counterweight plate 2211, one end of the supporting rotating shaft 224 is provided with a driven pulley 226, the motor base 229 is fixedly arranged on a fixed base 25 at the rear side of the fixed support 24, the motor base 229 is provided with a first gear motor 2210, the output end of the first gear motor 2210 penetrates the motor base 229 and is provided with a driving pulley 228 thereon, and the driving pulley 228 is connected with the driven pulley 226 through a transmission belt 227. The transmission force of the first gear motor 2210 can be transmitted to the lifting chain 222 through the transmission assembly 22, the lifting table 21 is driven to move up and down through the movement of the lifting chain 222, and then lifting movement of the soil opening cleaning mechanism 1 is achieved.

In this embodiment, the soil opening and cleaning mechanism 1 comprises a speed reducer 11, a driving motor 12, a transmission shaft 13, a fixed connection device 14 and a drilling head 15, wherein the speed reducer 11 is assembled on a lifting platform 21, the driving motor 12 is assembled at the input end of the speed reducer 11, the output end of the speed reducer 11 penetrates through the lifting platform 21 and stretches out, the transmission shaft 13 is connected with the output end of the speed reducer 11, the drilling head 15 is arranged at the lower side of the transmission shaft 13, and the transmission shaft 13 is connected with the drilling head 15 through the fixed connection device 14. The soil opening cleaning mechanism 1 can excavate and clean the soil layer during engineering investigation, and the soil opening operation convenience is improved. The power is provided by the driving motor 12, the rotating speed of the speed reducer 11 is reduced and transmitted to the transmission shaft 13, the drilling head 15 is driven to rotate by the transmission shaft 13, and then the soil layer is excavated and cleaned by the rotation of the drilling head 15.

It should be noted that, a pin 141 is disposed inside the connection portion between the transmission shaft 13 and the fixed connection device 14. The pin shaft 141 can prevent the looseness and falling off between the transmission shaft 13 and the fixed connecting device 14, and ensures the stability of transmission. Meanwhile, the pin shaft 141 can bear certain axial and radial loads, so that the strength and durability of the connection are improved. By fixing the pin 141, the connection between the transmission shaft 13 and the fixed connection means 14 can be made more secure. The drill bit 15 is arranged into a polygonal special-shaped structure, a plurality of groups of alloy cutter heads 16 are vertically and uniformly arranged at the edge of the side edge of the drill bit 15, the outer ends of the alloy cutter heads 16 are protruded out of the surface of the drill bit 15, the design can increase the strength and stability of the drill bit 15, improve the effect of the drill bit 15 in the soil opening operation, improve the working efficiency and reliability of the soil opening cleaning mechanism 1, and prolong the service life of the drill bit 15.

In this embodiment, the bulldozer 5 includes a bottom plate 51, a movable hinge device 52, a second gear motor 53, a supporting arm 54 and a bulldozer plate 55, the bottom plate 51 is fixedly arranged on the chassis 3 of the machine base, the second gear motor 53 is installed on the bottom plate 51 through the movable hinge device 52, the output end of the second gear motor 53 is connected with a threaded screw rod 59 through a coupling 591, the bulldozer plate 55 is arranged on the right side of the bottom plate 51, two groups of rib plates 512 are arranged on the rear side of the bulldozer plate 55, a beam bracket 510 parallel to the bulldozer plate 55 is arranged on the rear side of the bulldozer plate 55, the front end and the rear end of the beam bracket 510 are movably connected with a first movable connecting rod 56, a first cross rod 57 is arranged on the inner side of the first movable connecting rod 56, a second cross rod 513 is arranged on the lower side of the first cross rod 57, and the outer side of the lower end of the first movable connecting rod 56 is movably connected with the rib plates 512 through the second movable connecting rod 511. In the advancing process of the device, the second gear motor 53 drives the threaded screw rod 59 to rotate, the first cross rod 57 is driven to move outwards through the rotation of the threaded screw rod 59, the lower end of the first movable connecting rod 56 is driven to move downwards through the first cross rod 57, the bulldozer plate 55 moves downwards and stretches into a pit formed by soil opening, meanwhile, the bulldozer plate 55 is driven to move forwards through the movement of the device, thrust is generated to soil in the pit through the bulldozer plate 55, and then the soil is pushed forwards, so that the soil is cleaned. The soil scattered after the soil is opened can be cleaned through the bulldozing mechanism 5, the soil is pushed out of the dug pit, and the soil opening effect on the rock soil is improved.

It should be noted that, two sets of support arms 54 with inclined structures are provided on the bottom plate 51, one end of the support arm 54 is fixedly connected with the bottom plate 51, and the other end of the support arm 54 is sleeved on the second cross bar 513 and is rotatably connected with the second cross bar. The second cross bar 513 can be supported and fixed by the two groups of supporting arms 54, so that stable support is provided for the bulldozer blade 55, and the installation stability of the bulldozer blade 55 is further improved.

It should be noted that, the connector 58 is fixedly disposed at the middle position on the first cross bar 57, and one end of the threaded screw 59 penetrates through the connector 58 and is screwed with the connector through threads. The connection mode can enable the threaded screw rod 59 and the first cross rod 57 to be tightly connected together, and meanwhile when the threaded screw rod 59 rotates, the connector 58 moves along with the threaded screw rod, so that the position of the first cross rod 57 is changed, the up-and-down movement of the bulldozer plate 55 is controlled, and the height adjustment of the bulldozer plate 55 is achieved.

It should be noted that, the blade 55 is configured to have an arc-shaped structure, which can improve the working efficiency and the soil leveling effect of the bulldozer, and the arc-shaped structure can make the blade 55 better contact with the ground, so as to reduce the resistance in the bulldozer process. The lower part of the inner side surface of the bulldozer plate 55 is fixedly provided with the wear-resistant lining plate 551 through the bolts, the lower part of the inner side surface of the bulldozer plate 55 can be protected from being worn and damaged through the arranged wear-resistant lining plate 551, the service life of the bulldozer plate 55 is prolonged, and meanwhile, the wear-resistant lining plate 551 can be replaced and maintained conveniently through the fixing mode of the bolts.

The working principle of the soil opening equipment is as follows: when the device is actually used, the device is firstly moved to a designated area, the device can be integrally driven to move through the crawler-type travelling wheels 4, the crawler-type travelling wheels 4 have stronger traction force and ground grabbing force, can run on various complicated terrains and can adapt to different working environments, then the first gear motor 2210 is started, the driving force of the first gear motor 2210 is transmitted to the lifting chain 222 to drive the lifting chain 222 to move along the chain wheel 223, the lifting table 21 is driven to move downwards through the movement of the lifting chain 222, the soil opening cleaning mechanism 1 is further driven to move downwards, the drilling head 15 is enabled to be in contact with the ground, then the driving motor 12 is started, the driving motor 12 provides power, the speed reducer 11 reduces the rotating speed and transmits the rotating speed to the transmission shaft 13, the drilling head 15 is driven to rotate through the transmission shaft 13, and then the soil layer is excavated and cleaned through the rotation of the drilling head 15, so that the soil opening operation on the soil layer is realized. Meanwhile, the lifting of the lifting table 21 is controlled, so that the excavation depth can be conveniently adjusted and controlled during soil opening, and the excavation depth can be accurately controlled. The crawler-type travelling wheels 4 are controlled to move forwards during soil opening, so that the drilling head 15 can be driven to move forwards along the soil layer, and continuous soil opening and excavating treatment can be carried out on the soil layer. In the process of moving the device, the soil scattered after the soil is opened can be cleaned through the arranged bulldozing mechanism 5, the soil is pushed out of the dug pit, the soil opening effect on rock soil is improved, and the bulldozing mechanism can move up and down along with the rotation of the second gear motor 53 through the bulldozing plate 55, so that the position of the bulldozing plate 55 is conveniently adjusted.

It should be understood that the foregoing examples of the present utility model are merely illustrative of the present utility model and not limiting of the embodiments of the present utility model, and that various other changes and modifications can be made by those skilled in the art based on the above description, and it is not intended to be exhaustive of all of the embodiments, and all obvious changes and modifications that come within the scope of the utility model are defined by the following claims.

Claims (10)

1. The utility model provides an equipment of opening soil, includes frame chassis (3) and crawler-type walking wheel (4), its characterized in that: the crawler-type travelling wheels (4) are assembled on the front side and the rear side of the base chassis (3), the lifting mechanism (2) is arranged on the front side of the upper end face of the base chassis (3), the soil opening cleaning mechanism (1) is arranged on the front side of the lifting mechanism (2), and the bulldozing mechanism (5) is arranged on the rear side of the base chassis (3).

2. The earth opening apparatus of claim 1, wherein: elevating system (2) are including elevating platform (21), fixed bolster (24) and unable adjustment base (25), unable adjustment base (25) pass through bolt fixed mounting on frame chassis (3), unable adjustment base (25) upside has set firmly fixed bolster (24), inside vertical two sets of location guide arm (23) that are provided with of fixed bolster (24), location guide arm (23) front side is provided with elevating platform (21), fixed bolster (24) upside is provided with drive assembly (22).

3. The earth opening apparatus of claim 2, wherein: the lifting table (21) consists of a supporting plate (211), an outer frame (212), lifting sliding plates (213) and sliding sleeves (214), wherein the supporting plate (211) is provided with two groups of lifting sliding plates (213) and is arranged on the front side of a positioning guide rod (23) in parallel, the outer frame (212) is fixedly arranged on the front side and the rear side of the supporting plate (211), the lifting sliding plates (213) are fixedly arranged on the rear side of the supporting plate (211), the sliding sleeves (214) are embedded in the lifting sliding plates (213), and the sliding sleeves (214) are sleeved on the positioning guide rod (23).

4. The earth opening apparatus of claim 2, wherein: drive assembly (22) include connecting plate (221), lift chain (222), sprocket (223), motor cabinet (229), support pivot (224) and pivot seat (225), pivot seat (225) are installed in fixed bolster (24) top through the bolt, inside run through of pivot seat (225) is provided with support pivot (224), both sides all are equipped with sprocket (223) around support pivot (224), be equipped with lift chain (222) on sprocket (223), the one end of lift chain (222) is connected to on connecting plate (221), just connecting plate (221) and elevating platform (21) welded fastening, the lift chain (222) other end is connected with counter weight plate (2211), the one end of support pivot (224) is equipped with driven pulley (226), motor cabinet (229) set firmly on fixed bolster (25) of fixed bolster (24) rear side, be equipped with first gear motor (2210) on motor cabinet (229), the output of first gear motor (2210) runs through motor cabinet (229) and is equipped with driving pulley (228) and driven pulley (228) are connected with driving pulley (228).

5. The earth opening device according to claim 1 or 2, characterized in that: the utility model provides a soil opening and cleaning mechanism (1) includes reduction gear (11), driving motor (12), transmission shaft (13), fixed connection device (14) and drills and digs head (15), reduction gear (11) are assembled on elevating platform (21), the input of reduction gear (11) is equipped with driving motor (12), reduction gear (11) output runs through elevating platform (21) and stretches out, reduction gear (11) output is connected with transmission shaft (13), transmission shaft (13) downside is provided with drills and digs head (15), transmission shaft (13) are connected through fixed connection device (14) with drills and digs head (15).

6. The earth opening apparatus of claim 5, wherein: a pin shaft (141) is arranged in the connecting part of the transmission shaft (13) and the fixed connecting device (14) in a penetrating way;

The drilling head (15) is of a polygonal special-shaped structure, a plurality of groups of alloy tool bits (16) are vertically and uniformly arranged at the edge of the side edge of the drilling head (15), and the outer ends of the alloy tool bits (16) protrude out of the surface of the drilling head (15).

7. The earth opening apparatus of claim 1, wherein: bulldozing mechanism (5) include bottom plate (51), activity hinge means (52), second gear motor (53), support arm (54) and bulldozing board (55), bottom plate (51) set firmly on frame chassis (3), install second gear motor (53) through activity hinge means (52) on bottom plate (51), the output of second gear motor (53) is connected with screw thread lead screw (59) through shaft coupling (591), bottom plate (51) right side is provided with bulldozing board (55), bulldozing board (55) rear side is provided with two sets of gusset (512), bulldozing board (55) rear side is provided with crossbeam support (510) rather than parallel, both ends swing joint has first movable connecting rod (56) around crossbeam support (510), first movable connecting rod (56) inboard is provided with first horizontal pole (57), first horizontal pole (57) downside is provided with second horizontal pole (513), first movable connecting rod (56) lower extreme outside is through second movable connecting rod (511) and gusset (512).

8. The earth opening apparatus of claim 7, wherein: the bottom plate (51) is provided with two groups of supporting arms (54) with inclined structures, one ends of the supporting arms (54) are fixedly connected with the bottom plate (51), and the other ends of the supporting arms (54) are sleeved on the second cross rod (513) and are rotatably connected with the second cross rod.

9. The earth opening apparatus of claim 7, wherein: the middle position on the first cross rod (57) is fixedly provided with a connector (58), and one end of the threaded screw rod (59) penetrates through the connector (58) and is in threaded connection with the connector through threads.

10. The earth opening apparatus of claim 7, wherein: the bulldozer comprises a bulldozer body (55), wherein the bulldozer body (55) is of an arc-shaped structure, and a wear-resistant lining plate (551) is fixedly arranged on the lower portion of the inner side surface of the bulldozer body (55) through bolts.