Drum-type earth excavation machine and construction method

Abstract

The invention provides a drum-type earth excavation machine and a construction method, and belongs to the technical field of civil engineering construction. The drum-type earth excavation machine comprises a rack chassis, a first earth excavation mechanism, a second earth excavation mechanism, a conveying mechanism and a control assembly; a chassis of the rack is provided with a self-walking mechanism; a chassis of the rack is provided with a self-walking mechanism; the first earth cutting mechanism comprises a first connecting arm, a first motor and a first earth cutting roller, the first connecting arm is rotationally connected with one end of the automatic walking mechanism, the first earth cutting roller is rotationally connected with the first connecting arm, the first motor is arranged in the first connecting arm, and an output shaft of the first motor is connected with the first earth cutting roller; the second earth cutting mechanism comprises a second connecting arm, a second motor and a second earth cutting roller; the applicability of the device under different topographic conditions is enhanced, and the common problems of soil accumulation and blockage in traditional equipment are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of civil engineering construction, and in particular relates to a drum type earth excavator and a construction method. Background Art

[0002] In the patent application with application number 202322721230.4, a leveling and cleaning device for earth-moving excavation machinery is proposed, including a vehicle body that drives the device to move, a leveling component is connected to the front of the vehicle body through a hydraulic system, the leveling component includes a leveling bucket, a bulldozer is fixedly installed at the feed port of the leveling bucket, a partition is inclinedly arranged in the leveling bucket, the partition separates the leveling bucket into a soil storage chamber, a loading piece for transporting soil into the soil storage chamber is installed on the partition, the bulldozer levels the site, and the loading piece sends the soil accumulated on the bulldozer into the soil storage chamber, which prevents the soil from falling and losing from both sides of the bulldozer during the soil transportation process to a certain extent, thereby increasing the transportation distance of the leveling and cleaning device and improving the leveling efficiency of the leveling and cleaning device to a certain extent.

[0003] However, in the prior art, when excavating a foundation pit, soil accumulation and blockage problems are likely to occur due to the large amount of excavated material, and the excavator in the prior art is not suitable for working under different terrain conditions. Summary of the invention

[0004] Based on the above technical problems, the present invention provides a drum-type earthmoving excavator, which enhances the applicability of the device under different terrain conditions and solves the problems of soil accumulation and clogging commonly found in traditional equipment.

[0005] The specific technical solution is: A drum-type earthmoving excavator comprises: a frame chassis, a first excavating mechanism, a second excavating mechanism, a transmission mechanism and a control component; the frame chassis is provided with a self-propelled mechanism; the first excavating mechanism comprises a first connecting arm, a first motor and a first excavating roller, the first connecting arm is rotatably connected to one end of the automatic walking mechanism, the first excavating roller is rotatably connected to the first connecting arm, the first motor is arranged in the first connecting arm and the output shaft of the first motor is connected to the first excavating roller; the second excavating mechanism comprises a second connecting arm, a second motor and a second excavating roller, the second connecting arm is rotatably connected to the frame chassis, the second excavating roller is rotatably connected to the second connecting arm, the second motor is arranged in the second connecting arm and the output shaft of the second motor is connected to the second excavating roller; the transmission mechanism is arranged at the bottom of the frame chassis, and the transmission mechanism is located on one side of the first excavating roller; the control component comprises a first hydraulic cylinder and a second hydraulic cylinder, the first hydraulic cylinder and the second hydraulic cylinder are respectively rotatably connected to the frame chassis, and the telescopic ends of the first hydraulic cylinder and the second hydraulic cylinder are respectively rotatably connected to the first connecting arm and the second connecting arm.

[0006] In addition, the drum-type earthmoving excavator in the above technical solution provided by the present invention may also have the following additional technical features: In the above technical scheme, the transmission mechanism includes: two connecting parts, a base, an active roller shaft, a driven roller shaft, a transmission belt and a third motor; the two connecting parts are respectively arranged on both sides of the front end of the frame chassis; a tire is provided at the bottom of the base, the base is connected to the two connecting parts, and the base is located at the bottom of the frame chassis; the active roller shaft is arranged on one side of the base; the driven roller shaft is arranged on the other side of the base; the transmission belt is simultaneously wound around the outside of the active roller shaft and the driven roller shaft; the third motor is fixed on the base, and the third motor is connected to the active roller shaft; wherein, the transmission belt is located on one side of the first excavation drum.

[0007] The above technical solution also includes: a first rotating seat and a second rotating seat; the first rotating seat is arranged on the frame chassis, and the first hydraulic cylinder is installed on the first rotating seat; the second rotating seat is arranged on the frame chassis, and the second hydraulic cylinder is installed on the second rotating seat.

[0008] In the above technical solution, the first excavating roller includes: a first rotating shaft, a first spiral blade and a first shovel tooth; the first rotating shaft is rotatably connected to the first connecting arm; the first spiral blade is arranged on the outside of the first rotating shaft; and the first shovel tooth is arranged on the side wall of the first spiral blade.

[0009] In the above technical solution, the second excavating roller includes: a second rotating shaft, a second spiral blade and a second shovel tooth; the second rotating shaft is rotatably connected to the second connecting arm; the second spiral blade is arranged on the outside of the second rotating shaft; and the second shovel tooth is arranged on the side wall of the second spiral blade.

[0010] In the above technical solution, the first rotating shaft and the second rotating shaft rotate in opposite directions, the first spiral blade and the second spiral blade rotate in opposite directions, and the first shovel tooth and the second shovel tooth rotate in opposite directions.

[0011] The above technical solution also includes: a transport platform, a first roller, a second roller, a conveyor belt and a fourth motor; a universal wheel is provided at the bottom of the transport platform, and the transport platform is connected to the base through a mounting member; the first roller is arranged on one side of the transport platform; the second roller is arranged on the other side of the transport platform; the conveyor belt is simultaneously wound around the outside of the first roller and the second roller, one end of the conveyor belt is located below the conveyor belt, and the other end of the conveyor belt is opposite to the earth-moving transport vehicle; the fourth motor is fixed on one side of the transport platform, and the fourth motor is connected to the first roller.

[0012] In the above technical solution, the transport platform is at a predetermined inclination angle.

[0013] A construction method of a drum-type earthmoving excavator, the construction method comprising the following steps: S1: Surveyors lay out the excavation boundary of the foundation pit; S2: Determine the parking location of earthmoving vehicles based on municipal roads and construction roads; S3: Determine a corner of the foundation pit plane as the excavation starting point, and install a transport belt from the excavation starting point to the position of the earthwork transport vehicle; S4: The drum-type earthwork excavation machine is in place, and the angle of the first earthwork excavation drum is adjusted through the connecting arm to excavate the earthwork at the side slope of the foundation pit downwards, with an excavation depth of 1.2m, until the determined side slope is completely excavated; S5: During the movement of the machine, the conveyor belt behind it moves along and relays the earthwork to the earthwork transport vehicle; S6: The machine moves to the excavation starting point; S7: excavate a parking position for the machine, then move forward to excavate the earth, and use the conveyor belt on the machine to transport the earth to the conveyor belt behind it until it is relayed to the earth transport vehicle; the conveyor belt moves synchronously with the machine, and when the conveyor belt is not long enough for relaying, add another conveyor belt; S8: When the machine reaches the edge, it repairs the slope and then drives back to the other side of the foundation pit; S9: repeating steps S7 and S8 until the excavation of the soil layer is completed; S10: excavate the slope of the last side; S11: repeating steps S7, S8, S9, and S10 to excavate the second and third layers of earthwork; S12: During the excavation of the third layer, workers are clearing the bottom; S13: After the excavation is completed, if the depth is shallow, the excavator should drive out of the foundation pit by itself. If the depth is deep, a tower crane or a truck crane should be used in conjunction with lifting machinery and a conveyor belt to move the excavation out of the foundation pit.

[0014] Compared with the prior art, the drum type earth excavator of the present invention has the following beneficial effects: 1. The angle and height of the digging drum are adjusted by the hydraulic cylinder, thereby enhancing the applicability of the device under different terrain conditions. The first digging drum rotates from bottom to top, and the cut soil rotates along the first spiral blade and falls onto the conveying mechanism, thereby solving the common soil accumulation and blockage problems in traditional equipment.

[0015] 2. The combined use of two excavation drums and the design of the conveying mechanism expand the working area of ​​the foundation pit excavation, and the cut earth can be smoothly transported to the conveying mechanism.

[0016] 3. By setting the rotation direction of the two digging drums to be opposite to the shovel teeth, the purpose of ensuring that the earth excavated by the two digging drums can all fall on the conveying mechanism is achieved.

[0017] 4. A first connecting arm and a second connecting arm are provided to support the excavation drum, so that when the device moves along the side wall of the foundation pit, the other ends of the two excavation drums can simultaneously perform excavation operations on the side wall of the foundation pit where the device is moving forward and the side wall of the foundation pit on the side of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of a drum-type earthmoving excavator of the present invention; Figure 2 A side view of a drum-type earthmoving excavator according to the present invention; Figure 3 It is a structural schematic diagram of the first digging drum of the present invention; Figure 4 It is a structural schematic diagram of the transmission mechanism of the present invention; Figure 5 It is a structural schematic diagram of a drum-type earthmoving excavator of the present invention; Figure 6 A construction schematic diagram of the present invention; Figure 7 Another construction schematic diagram of the present invention; in, Figures 1 to 7 The corresponding relationship between the reference numerals and component names in the figure is: 10 frame chassis, 11 self-propelled mechanism, 12 first connecting arm, 13 first rotating seat, 14 first digging drum, 141 first rotating shaft, 142 first spiral blade, 143 first shovel tooth, 15 first hydraulic cylinder, 16 connecting piece, 17 base, 18 active roller shaft, 19 driven roller shaft, 20 transmission belt, 21 mounting piece, 22 second connecting arm, 23 second digging drum, 231 second rotating shaft, 232 second spiral blade, 233 second shovel tooth, 24 second rotating seat, 25 second hydraulic cylinder, 26 transport platform, 27 first roller shaft, 28 transport belt, 29 slope, 30 excavation starting point, 31 earth transport vehicle, 32 construction road. DETAILED DESCRIPTION

[0019] The following is a combination of specific implementation cases and attached Figure 1-7 The present invention is further described below, but the present invention is not limited to these embodiments. Embodiment 1:

[0020] A drum type earthmoving excavator, such as Figure 1-5As shown, it includes: a frame chassis 10, a first digging mechanism, a second digging mechanism, a transmission mechanism and a control component; the frame chassis 10 is provided with a self-propelled mechanism 11; the first digging mechanism includes two first connecting arms 12, a first motor and a first digging roller 14, the two first connecting arms 12 are rotatably connected to one end of the automatic walking mechanism, the first digging roller 14 is rotatably connected to the first connecting arm 12, the first motor is arranged in the first connecting arm 12 and the output shaft of the first motor is connected to the first digging roller 14; the second digging mechanism includes a second connecting arm 22, a second motor and a second digging roller 23, the second connecting arm 22 is rotatably connected to the frame chassis 10, the second digging roller 23 is rotatably connected to the second connecting arm 22, the second motor is arranged in the second connecting arm 22 and the output shaft of the second motor is connected to the second digging roller 23; the transmission mechanism is arranged at the bottom of the frame chassis 10, and the transmission mechanism is located on one side of the first digging roller 14; the control component includes a first hydraulic cylinder 15 and a second hydraulic cylinder 25, the first hydraulic cylinder 15 and the second hydraulic cylinder 25 are respectively rotatably connected to the frame chassis 10, and the telescopic ends of the first hydraulic cylinder 15 and the second hydraulic cylinder 25 are respectively rotatably connected to the first connecting arm 12 and the second connecting arm 22.

[0021] By adopting the above structure, the angle and height of the first digging mechanism and the second digging mechanism are adjusted by extending and retracting the first hydraulic cylinder 15 and the second hydraulic cylinder 25, thereby enhancing the applicability of the device under different terrain conditions, especially slope terrain, and the first digging drum 14 rotates from bottom to top, and the cut earth is rotated along the first spiral blade 142 and thrown onto the conveying mechanism, thereby solving the problems of soil accumulation and blockage common in traditional equipment.

[0022] By combining the first excavation drum 14, the second excavation drum 23 and the conveying mechanism, the working area of ​​the foundation pit excavation is expanded, and the cut earth can be smoothly transported to the conveying mechanism.

[0023] A first connecting arm 12 and a second connecting arm 22 are provided to support the excavating drum, so that when the device moves along the side wall of the foundation pit, the two excavating drums can simultaneously excavate the side wall of the foundation pit moving forward and the side wall of the foundation pit on the side of the device.

[0024] The first motor and the second motor respectively control the operation of the first excavation drum 14 and the second excavation drum 23, and the first excavation drum 14 and the second excavation drum 23 rotate in opposite directions, so that the earth cut by the first excavation drum 14 and the second excavation drum 23 falls onto the conveyor belt 20.

[0025] Specifically, the self-propelled mechanism 11 may be a crawler type or a tire type.

[0026] In an embodiment of the present invention, Figure 1-5 As shown, the transmission mechanism includes: two connecting members 16, a base 17, an active roller shaft 18, a driven roller shaft 19, a transmission belt 20 and a third motor; the two connecting members 16 are respectively arranged on both sides of the front end of the frame chassis 10; a tire is provided at the bottom of the base 17, the base 17 is connected to the two connecting members 16, and the base 17 is located at the bottom of the frame chassis 10; the active roller shaft 18 is arranged on one side of the base 17; the driven roller shaft 19 is arranged on the other side of the base 17; the transmission belt 20 is simultaneously wound around the outside of the active roller shaft 18 and the driven roller shaft 19; the third motor is fixed on the base 17, and the third motor is connected to the active roller shaft 18; wherein, the transmission belt 20 is located on one side of the first excavation drum 14.

[0027] The third motor drives the active roller 18 to rotate, so that the conveyor belt 20 is transmitted through the cooperation of the active roller 18 and the driven roller 19, and then drives the earth falling on the conveyor belt 20 to move to the specified position, thereby avoiding the earth from piling up in one place.

[0028] Specifically, when the device moves, the base 17 is used in combination with the connecting piece 16 and the tire to achieve the purpose of following the movement of the device.

[0029] Specifically, Figure 7 As shown, the excavator moves along the foundation pit, so that the excavation drum can simultaneously excavate the foundation pit slopes in front and on the sides.

[0030] In an embodiment of the present invention, Figure 1-5 As shown, it also includes: a first rotating seat 13 and a second rotating seat 24; the first rotating seat 13 is arranged on the frame chassis 10, and the first hydraulic cylinder 15 is installed on the first rotating seat 13; the second rotating seat 24 is arranged on the frame chassis 10, and the second hydraulic cylinder 25 is installed on the second rotating seat 24.

[0031] The first hydraulic cylinder 15 and the second hydraulic cylinder 25 are supported by the first rotating seat 13 and the second rotating seat 24 respectively, and the first hydraulic cylinder 15 and the second hydraulic cylinder 25 are extended and retracted to adjust the angle and height of the second excavating drum 23 so that the staff can make adjustments according to actual needs.

[0032] In an embodiment of the present invention, Figure 1-5 As shown, the first excavating roller 14 includes: a first rotating shaft 141, a first spiral blade 142 and a first shovel tooth 143; the first rotating shaft 141 is rotatably connected to the first connecting arm 12; the first spiral blade 142 is arranged on the outer side of the first rotating shaft 141; and the first shovel tooth 143 is arranged on the side wall of the first spiral blade 142.

[0033] The first spiral blade 142 is driven to rotate by the first rotating shaft 141, and the first shovel teeth 143 cut or dig the earth. The cut earth is transported in a spiral direction and falls on the conveyor belt 20, thereby ensuring continuous transportation of the earth.

[0034] In an embodiment of the present invention, Figure 1-5 As shown, the second excavating roller 23 includes: a second rotating shaft 231, a second spiral blade 232 and a second shovel tooth 233; the second rotating shaft 231 is rotatably connected to the second connecting arm 22; the second spiral blade 232 is arranged on the outer side of the second rotating shaft 231; and the second shovel tooth 233 is arranged on the side wall of the second spiral blade 232.

[0035] The second spiral blade 232 is driven to rotate by the second rotating shaft 231 , and the second shovel teeth 233 cut or dig the earth. The cut earth is transported in a spiral direction and falls on the conveyor belt 20 .

[0036] Specifically, by using the first digging drum 14 and the second digging drum 23 in combination, it is possible to effectively expand the working area when cutting or digging the slope.

[0037] In the embodiment of the present invention, the first rotating shaft 141 and the second rotating shaft 231 rotate in opposite directions, the first spiral blade 141 and the second spiral blade 232 rotate in opposite directions, and the first shovel tooth 143 and the second shovel tooth 233 rotate in opposite directions.

[0038] By having the first rotating shaft 141 and the second rotating shaft 231 rotate in opposite directions, the first spiral blade 142 and the second spiral blade 232 rotate in opposite directions, and the first shovel tooth 143 and the second shovel tooth 233 rotate in opposite directions, the earth excavated by the first shovel tooth 143 and the second shovel tooth 233 can respectively fall into the conveyor belt 20 through the first spiral blade 142 and the second spiral blade 232 for transportation.

[0039] In an embodiment of the present invention, Figure 1-5 As shown, it also includes: a transport platform 26, a first roller 27, a second roller, a transport belt 28 and a fourth motor; a universal wheel is provided at the bottom of the transport platform 26, and the transport platform 26 is connected to the base 17 through a mounting member 21; the first roller 27 is arranged on one side of the transport platform 26; the second roller is arranged on the other side of the transport platform 26; the transport belt 28 is simultaneously wound around the outside of the first roller 27 and the second roller, one end of the transport belt 28 is located below the conveyor belt 20, and the other end of the transport belt 28 is opposite to the earth-moving transport vehicle; the fourth motor is fixed on one side of the transport platform 26, and the fourth motor is connected to the first roller 27.

[0040] Through the operation of the fourth motor, with the cooperation of the first roller 27 and the second roller, the conveyor belt 28 is transported, so that the earth transported by the conveyor belt 20 falls into the conveyor belt 28, and the conveyor belt 28 is used to transport the earth to the earth transport vehicle.

[0041] Specifically, the number of transport platforms 26 can be increased according to the distance between the earth-moving transport vehicle and the frame chassis 10, so that the transport platforms 26 can smoothly transport the earth conveyed by the conveyor belt 20 to the earth-moving transport vehicle.

[0042] Specifically, the fourth motor and the third motor are both installed in protective shells, and the protective shells are fixed to the sides of the base 17 and the transport platform 26 respectively.

[0043] Specifically, in the prior art, when an excavator is under construction, an earth-moving transport vehicle that cooperates with the excavator to transport earth needs to travel into the foundation pit. Sometimes the temporary ramp has a large slope and a small bearing capacity of the temporary earth ramp, and it is easy for the earth-moving transport vehicle to get stuck on the slope and have difficulty traveling. By using a combination of multiple transport platforms 26 and a conveyor belt 20 in this embodiment, the earth excavated by the excavator can be smoothly transported to the earth-moving transport vehicle, so that the earth-moving transport vehicle does not need to travel into the foundation pit to achieve the purpose of transporting earth, and the use of this structure also increases the transportation volume.

[0044] In the embodiment of the present invention, the transport platform 26 is at a predetermined tilt angle so as to transport earth to the earth transport vehicle.

[0045] Specifically, the angle of the transport platform 26 may be between 3 and 30 degrees. Embodiment 2:

[0046] Take a rectangular foundation pit as an example, with a length of 50m and a width of 20m, and a slope coefficient of 1:0.5 (see Figure 6 ) The excavation depth is 3.7m, and the excavation depth of each layer is determined to be 1.2m based on the depth.

[0047] A construction method of a drum-type earthmoving excavator, the construction method comprising the following steps: S1: Surveyors lay out the excavation boundary of the foundation pit; S2: Determine the parking position of the earth moving vehicle 31 according to the municipal roads and construction roads; S3: Determine a corner of the foundation pit plane as the excavation starting point, and install a transport belt from the excavation starting point 30 to the position of the earthwork transport vehicle 31; S4: The drum-type earthwork excavation machine is in place, and the angle of the first earthwork excavation drum 14 is adjusted by the connecting arm to excavate the earthwork at the position of the foundation pit slope 29 downward, with an excavation depth of 1.2m, until the determined side slope 29 is completely excavated; S5: During the movement of the machine, the conveyor belt 28 at the rear follows and transports the earth to the earth transport vehicle 31; S6: The machine drives to the excavation starting point 30; S7: excavate a parking position for the machine, then move forward to excavate the earth, and transport the earth to the conveyor belt 28 behind the machine through the conveyor belt 20 on the machine, until it is relayed to the earth transport vehicle 31; the conveyor belt 28 moves synchronously with the machine, and when the length of the conveyor belt 28 is not enough for relaying, add another conveyor belt 28; S8: When the machine reaches the edge, it repairs the slope and then drives back to the other side of the foundation pit; S9: repeating steps S7 and S8 until the excavation of the soil layer is completed; S10: excavating the slope 29 of the last side; S11: repeating steps S7, S8, S9, and S10 to excavate the second and third layers of earthwork; S12: During the excavation of the third layer, workers are clearing the bottom; S13: After the excavation is completed, the excavator can drive out of the foundation pit by itself if the depth is shallow, and use a tower crane or a car crane in conjunction with a lifting machine and a conveyor belt 28 to the outside of the foundation pit if the depth is deep.

[0048] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the description of the present invention, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drum type earthmoving excavator, characterized in that: include: A frame chassis, wherein the frame chassis is provided with a self-propelled mechanism; a first digging mechanism, the first digging mechanism comprising a first connecting arm, a first motor and a first digging drum, the first connecting arm being rotatably connected to one end of the automatic walking mechanism, the first digging drum being rotatably connected to the first connecting arm, the first motor being arranged in the first connecting arm and the output shaft of the first motor being connected to the first digging drum; a second digging mechanism, the second digging mechanism comprising a second connecting arm, a second motor and a second digging drum, the second connecting arm being rotatably connected to the frame chassis, the second digging drum being rotatably connected to the second connecting arm, the second motor being arranged in the second connecting arm and the output shaft of the second motor being connected to the second digging drum; A conveying mechanism, the conveying mechanism is arranged at the bottom of the frame chassis, and the conveying mechanism is located on one side of the first excavating drum; A control component, the control component includes a first hydraulic cylinder and a second hydraulic cylinder, the first hydraulic cylinder and the second hydraulic cylinder are respectively rotatably connected to the frame chassis, and the telescopic ends of the first hydraulic cylinder and the second hydraulic cylinder are respectively rotatably connected to the first connecting arm and the second connecting arm.

2. A drum type earthmoving machine according to claim 1, characterized in that: The transmission mechanism comprises: Two connecting pieces, the two connecting pieces are respectively arranged on both sides of the front end of the frame chassis; A base, wherein a tire is provided at the bottom of the base, the base is connected to the two connecting members, and the base is located at the bottom of the frame chassis; An active roller shaft, wherein the active roller shaft is arranged on one side of the base; A driven roller shaft, the driven roller shaft is arranged on the other side of the base; A transmission belt, the transmission belt is wound around the outer sides of the driving roller and the driven roller at the same time; A third motor, wherein the third motor is fixed on the base and connected to the active roller shaft; Wherein, the conveyor belt is located on one side of the first excavation drum.

3. A drum type earthmoving machine according to claim 2, characterized in that: Also includes: A first rotating seat, wherein the first rotating seat is arranged on the frame chassis, and the first hydraulic cylinder is installed on the first rotating seat; A second rotating seat is arranged on the frame chassis, and the second hydraulic cylinder is installed on the second rotating seat.

4. A drum type earthmoving machine according to claim 3, characterized in that: The first excavation drum comprises: a first rotating shaft, the first rotating shaft being rotatably connected to the first connecting arm; a first spiral blade, wherein the first spiral blade is arranged on the outer side of the first rotating shaft; The first shovel tooth is arranged on the side wall of the first spiral blade.

5. A drum type earthmoving machine according to claim 4, characterized in that: The second excavation drum comprises: a second rotating shaft, the second rotating shaft being rotatably connected to the second connecting arm; a second spiral blade, the second spiral blade being arranged on the outer side of the second rotating shaft; The second shovel teeth are arranged on the side wall of the second spiral blade.

6. A drum type earthmoving machine according to claim 5, characterized in that: The first rotating shaft and the second rotating shaft rotate in opposite directions, the first spiral blade and the second spiral blade rotate in opposite directions, and the first shovel tooth and the second shovel tooth rotate in opposite directions.

7. A drum type earthmoving machine according to claim 6, characterized in that: Also includes: A transport platform, wherein a universal wheel is provided at the bottom of the transport platform, and the transport platform is connected to the base through a mounting member; a first roller shaft, the first roller shaft being arranged on one side of the transport platform; a second roller shaft, the second roller shaft being arranged on the other side of the transport platform; A conveyor belt, which is wound around the outside of the first roller and the second roller at the same time, one end of the conveyor belt is located below the conveyor belt, and the other end of the conveyor belt is opposite to the earth-moving transport vehicle; A fourth motor is fixed on one side of the transport platform and is connected to the first roller shaft.

8. The drum type earthmoving machine according to claim 7, characterized in that: The transport platform is at a predetermined inclination angle.

9. A construction method of a drum-type earthmoving excavator, applied to a drum-type earthmoving excavator as claimed in any one of claims 1 to 8, characterized in that: The construction method includes the following steps: S1: Surveyors lay out the excavation boundary of the foundation pit; S2: Determine the parking location of earthmoving vehicles based on municipal roads and construction roads; S3: Determine a corner of the foundation pit plane as the excavation starting point, and install a transport belt from the excavation starting point to the position of the earthwork transport vehicle; S4: The drum-type earthwork excavation machine is in place, and the angle of the first earthwork excavation drum is adjusted through the connecting arm to excavate the earthwork at the side slope of the foundation pit downwards, with an excavation depth of 1.2m, until the determined side slope is completely excavated; S5: During the movement of the machine, the conveyor belt behind it moves along and relays the earthwork to the earthwork transport vehicle; S6: The machine moves to the excavation starting point; S7: excavate a parking position for the machine, then drive forward to excavate the earth, and transport the earth to the conveyor belt behind through the conveyor belt on the machine until it is relayed to the earth transport vehicle; The conveyor belt moves synchronously with the machine. When the conveyor belt is not long enough for relay, an additional conveyor belt is added; S8: When the machine reaches the edge, it repairs the slope and then drives back to the other side of the foundation pit; S9: repeating steps S7 and S8 until the excavation of the soil layer is completed; S10: excavate the slope of the last side; S11: repeating steps S7, S8, S9, and S10 to excavate the second and third layers of earthwork; S12: During the excavation of the third layer, workers are clearing the bottom; S13: After the excavation is completed, if the depth is shallow, the excavator should drive out of the foundation pit by itself. If the depth is deep, a tower crane or a truck crane should be used in conjunction with lifting machinery and a conveyor belt to move the excavation out of the foundation pit.

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