A small machine for trench earthwork micro-digging

Abstract

The utility model discloses a small -size machine utensil for the earthwork micro -excavation in the trench. It includes cylindrical shell, and the coaxial rotation arrangement connecting cylinder in the shell, and the connecting cylinder end fixed cutting head, and is located the shell open end, and the closed end is equipped with driving element drive connecting cylinder, and the connecting cylinder outer wall has the ribbon dragon, and the bottom is equipped with the blanking tube, and the outside wall installs the power. The shell has the installation rod, the mounting bracket, and the cutting head contains the installation cover, the cutting pole, the cutting block, and is equipped with the support rod. Driving element is by motor, speed reducer and transmission gear group constitutes. The shell closed end has the connecting plate, the air intake and exhaust hole and the fan, and the outside wall has the handle. The small -size machine utensil can solve the low efficiency, high cost, quality difficult guarantee etc. of the trench sidewall excavation in the narrow lane pipe ditch in the old small district municipal rain and pollution diversion reconstruction, and the mechanical cutting replaces the manual excavation, improves the efficiency, reduces the cost, and the compact structure adapts the narrow space, and the ribbon dragon and the fan realize the earthwork delivery and the heat dissipation, and the handle is convenient for the operation, guarantees the stable reliable operation of machine utensil.

Description

Technical Field

[0001] This utility model relates to the technical field of earthmoving micro excavators, and in particular to a small machine for micro excavation of earthwork in trenches. Background Technology

[0002] During the construction of the municipal residential area rainwater and sewage separation renovation project, the construction site is limited due to the location in an old residential area. In the narrow alleys of the old city, the foundation pit of the pipe trench is more than 3m deep. The reverse construction method is often used to cast-in-place reinforced concrete walls to support the trench slope. When the first layer of concrete support wall is completed and the second layer of trench side wall soil is excavated, due to the limited construction operation space, manual labor and pickaxes are mainly used for excavation. This is not only difficult to construct, inefficient, time-consuming, and costly, but also makes it difficult to guarantee the excavation quality. Summary of the Invention

[0003] The technical problem to be solved by this utility model is that the excavation of the trench sidewall inside the trench is inefficient, labor-intensive and costly.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a small machine for micro-excavation of earthwork in trenches, including a cylindrical shell, a connecting cylinder coaxially rotatably arranged in the shell, and a cutting head fixed at the end of the connecting cylinder. The cutting head is located at the open end of the shell, and the other end of the shell is a closed end. The driving structure of the connecting cylinder is a driving component arranged at the closed end. An auger is coaxially fixedly connected to the outer wall of the connecting cylinder. A feed pipe is provided in the middle of the bottom of the shell, and a power supply is installed on the outer wall of the closed end.

[0005] Preferably, a mounting rod is coaxially fixedly installed inside the housing, and the connecting cylinder is rotatably connected to the mounting rod via a bearing.

[0006] Preferably, a mounting bracket is fixedly provided inside the housing, one end of the mounting rod is fixed to the mounting bracket, the cutting head is fitted onto the other end of the mounting rod, and a support rod is provided on the inner side of the cutting head, with the movable end of the support rod abutting against the inner wall of the housing.

[0007] Preferably, the cutting head includes a mounting sleeve, a cutting rod fixed to the outer wall of the mounting sleeve, and a cutting block fixed to the cutting rod. The cutting rod is distributed at equal angles around the axis of the mounting sleeve, and the mounting sleeve is fixed to the end of the connecting cylinder.

[0008] Preferably, the support rod is a balance rod fixed parallel to the side wall of the cutting rod, and a wedge is fixedly connected to the end of the balance rod. An inclined surface is provided on the inner side of the end wall of the housing, and the outer side wall of the wedge is attached to the inclined surface.

[0009] Preferably, the cutting blocks are equidistant from each other along the axial direction of the cutting rod, the top of the cutting block is provided with a cutting edge, and the cutting block is inclined relative to the cutting rod.

[0010] Preferably, a partition is coaxially fixed to the end of the connecting cylinder, and the outer side wall of the partition is in contact with the outer side wall of the housing.

[0011] Preferably, the driving component includes a motor and a reducer fixed to the inner sidewall of the housing. The output shaft of the motor is connected to the reducer for transmission. The reducer is connected to the outer endwall of the partition through a transmission gear set. The driven gear in the transmission gear set is coaxially fixed to the outer sidewall of the partition.

[0012] Preferably, a connecting plate is horizontally fixed inside the closed end of the housing, and an air inlet and an air outlet are respectively opened on the closed end of the housing. The air inlet is located above the connecting plate, the air outlet is located below the connecting plate, and a fan is fixedly installed at the bottom of the connecting plate.

[0013] Preferably, a handle is fixed on the outer wall of the closed end of the housing, and the handle is arranged on both sides of the housing.

[0014] This utility model provides a small machine for micro-excavation of earthwork in trenches, which has the following beneficial effects.

[0015] 1. The small tool of this utility model drives the connecting cylinder to rotate through the driving component, thereby enabling the cutting head to cut the soil on the side wall of the trench. Compared with manual digging with pickaxe, it greatly improves digging efficiency, reduces manpower input, and reduces labor intensity.

[0016] 2. The structural design of the cutting head, including the cutting rod and cutting blocks, enables more precise cutting of the soil. The cutting edge at the top of the cutting block and its inclined setting make cutting smoother and better ensure the excavation quality compared to manual digging.

[0017] 3. The auger on the outer wall of the connecting cylinder can transport the cut earth to the discharge pipe, realizing automatic earth conveying; the fan installed in the shell, together with the air inlet and exhaust port, can ventilate and dissipate heat inside the machine to ensure normal operation of the machine.

[0018] 4. The installation rod and bearings ensure stable rotation of the connecting cylinder; the fit between the support rod and wedge block and the inclined surface of the inner wall of the housing increases the stability of the cutting head during operation; the transmission method of the motor, reducer and transmission gear set ensures stable power transmission and reliable operation of the machine. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1This is a structural schematic diagram of an embodiment of the present utility model.

[0021] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the present utility model.

[0022] Figure 3 This is a schematic diagram of the cutting head in an embodiment of the present invention.

[0023] In the diagram: 1. Housing; 2. Mounting rod; 3. Connecting cylinder; 4. Screw; 5. Partition; 6. Transmission gear set; 7. Drive component; 8. Feed pipe; 9. Mounting bracket; 10. Mounting sleeve; 11. Cutting rod; 12. Cutting block; 13. Balance bar; 14. Fan; 15. Connecting plate; 16. Air inlet; 17. Air outlet; 18. Power supply; 19. Handle. Detailed Implementation

[0024] like Figure 1-3 As shown, this utility model provides a small tool for micro-excavation of earthwork in trenches, including a cylindrical shell 1, a connecting cylinder 3 coaxially rotatably arranged inside the shell 1, and a cutting head fixed at the end of the connecting cylinder 3. The cutting head is located at the open end of the shell 1, and the other end of the shell 1 is a closed end. The driving structure of the connecting cylinder 3 is a driving component 7 arranged at the closed end. An auger 4 is coaxially fixedly connected to the outer wall of the connecting cylinder 3. A feed pipe 8 is provided in the middle of the bottom of the shell 1, and a power supply 18 is installed on the outer wall of the closed end.

[0025] Power is supplied to the drive unit 7 via power supply 18. The drive unit 7 drives the connecting cylinder 3 to rotate. The connecting cylinder 3 drives the auger 4 and the cutting head to rotate. During the rotation of the connecting cylinder 3, the worker holds the housing 1 and inserts the small tool horizontally into the soil. During the insertion, the cutting head cuts the soil. The cut soil enters the interior of the housing 1. Under the conveying of the auger 4, the soil moves along the housing 1 and is finally discharged from the discharge pipe 8 at the bottom of the housing 1, thus realizing the micro-excavation of the trench.

[0026] like Figure 2 As shown, to achieve stable installation of the connecting cylinder 3, a mounting rod 2 is coaxially fixedly installed inside the housing 1, and the connecting cylinder 3 is rotatably connected to the mounting rod 2 via a bearing. By fixing the mounting rod 2 inside the housing 1, the connecting cylinder 3 is fitted onto the mounting rod 2, achieving a stable rotatable connection of the connecting cylinder 3.

[0027] like Figure 2As shown, to improve the stability of the mounting rod 2, a mounting bracket 9 is fixedly installed inside the housing 1. One end of the mounting rod 2 is fixed to the mounting bracket 9, and the cutting head is fitted onto the other end of the mounting rod 2. A support rod is provided on the inner side of the cutting head, and the movable end of the support rod abuts against the inner wall of the housing 1. One end of the mounting rod 2 is directly fixed inside the housing 1 through the mounting bracket 9, and the other end of the mounting rod 2 is rotatably connected to the cutting head. The inner side of the cutting head abuts against the inner wall of the housing 1. During the rotation of the cutting head, it can be evenly supported by force to ensure the stability of the other end of the mounting rod 2.

[0028] like Figure 1-3 As shown. The cutting head includes a mounting sleeve 10, a cutting rod 11 fixed to the outer wall of the mounting sleeve 10, and a cutting block 12 fixed to the cutting rod 11. The cutting rod 11 is distributed at equal angles around the axis of the mounting sleeve 10, and the mounting sleeve 10 is fixed to the end of the connecting cylinder 3. The mounting sleeve 10 is fixedly installed on the end wall of the connecting cylinder 3. At the same time, the mounting sleeve 10 is fitted onto the mounting rod 2. During the process of the driving component 7 driving the connecting cylinder 3 to rotate, the cutting head and the auger 4 are driven to rotate synchronously. The cutting head cuts the soil, and at the same time, the auger 4 delivers the soil blocks produced by the cutting head.

[0029] like Figure 2 As shown. The support rod is a balance rod 13 fixed parallel to the side wall of the cutting rod 11. A wedge is fixedly connected to the end of the balance rod 13. An inclined surface is provided on the inner side of the end wall of the housing 1, and the outer side wall of the wedge is attached to the inclined surface. The balance rod 13 on the cutting head abuts against the side wall of the housing 1, and the wedge increases the contact area, ensuring the stability between the cutting head and the housing 1.

[0030] like Figure 2 and Figure 3 As shown. The cutting blocks 12 are equidistantly arranged along the axial direction of the cutting rod 11. The top end of the cutting block 12 is provided with a cutting edge, and the cutting block 12 is inclined relative to the cutting rod 11. Due to the inclined arrangement of the cutting block 12, as the cutting block 12 rotates with the cutting plate 11, the cutting edge at the movable end of the cutting block 12 can easily cut the soil, and the resulting soil blocks enter the interior of the shell 1.

[0031] like Figure 2 As shown. A partition 5 is coaxially fixed to the end of the connecting cylinder 3, and the outer side wall of the partition 5 is in contact with the outer side wall of the housing 1. By setting the partition 5, the inside of the housing 1 is sealed to prevent soil from entering the inside of the housing 1 during the conveying process, so that the soil can smoothly enter the feed pipe 8.

[0032] like Figure 2As shown. The driving component includes a motor and a reducer fixed to the inner wall of the housing 1. The motor output shaft is connected to the reducer via a transmission. The reducer is connected to the outer end wall of the partition 5 via a transmission gear set 6. The driven gear in the transmission gear set 6 is coaxially fixed to the outer side wall of the partition 5. The motor and reducer drive the driving gear in the transmission gear set 6 to rotate. The driving gear meshes with the driven gear, which is coaxially fixed to the end wall of the partition 5. By driving the partition 5 to rotate, the connecting cylinder 3 is rotated.

[0033] like Figure 2 As shown. A connecting plate 15 is horizontally fixed inside the closed end of the housing 1. An air inlet 16 and an air outlet 17 are respectively opened on the closed end of the housing 1. The air inlet 16 is located above the connecting plate 15, and the air outlet 17 is located below the connecting plate 15. A fan 14 is fixedly installed at the bottom of the connecting plate 15. The connecting plate 15 divides the interior of the housing 1 to form an air flow channel. Under the induced draft of the fan 14, air enters the interior of the housing 1 through the air inlet 16, passes through the driving component 7, and flows out through the air outlet 17, thereby cooling the driving component 7.

[0034] like Figure 1 As shown. A handle 19 is fixed on the outer wall of the closed end of the housing 1, and the handles 19 are arranged on both sides of the housing 1. Handles 19 are installed on both side walls of the housing 1, and a control switch is installed on one of the handles 19. The worker holds a small tool with both hands to perform micro-excavation of the soil on the side wall of the trench.

Claims

1. A small machine for micro-excavation of earthwork in trenches, characterized in that: It includes a cylindrical shell (1), a connecting cylinder (3) coaxially rotatably arranged inside the shell (1), and a cutting head fixed at the end of the connecting cylinder (3). The cutting head is located at the open end of the shell (1), and the other end of the shell (1) is a closed end. The driving structure of the connecting cylinder (3) is a driving component (7) arranged at the closed end. An auger (4) is coaxially fixedly connected to the outer wall of the connecting cylinder (3). A feed pipe (8) is provided in the middle of the bottom of the shell (1), and a power supply (18) is installed on the outer wall of the closed end.

2. The small-scale excavator for micro-excavation of earthwork in trenches as described in claim 1, characterized in that: An mounting rod (2) is coaxially fixed inside the housing (1), and the connecting cylinder (3) is rotatably connected to the mounting rod (2) via a bearing.

3. The small-scale excavator for micro-excavation of earthwork in trenches as described in claim 2, characterized in that: An installation frame (9) is fixedly installed inside the housing (1). One end of the installation rod (2) is fixed on the installation frame (9). The cutting head is fitted onto the other end of the installation rod (2). A support rod is provided on the inner side of the cutting head. The movable end of the support rod abuts against the inner wall of the housing (1).

4. The small-scale excavator for micro-excavation of earthwork in trenches as described in claim 3, characterized in that: The cutting head includes a mounting sleeve (10), a cutting rod (11) fixed on the outer wall of the mounting sleeve (10), and a cutting block (12) fixed on the cutting rod (11). The cutting rod (11) is distributed at equal angles around the axis of the mounting sleeve (10), and the mounting sleeve (10) is fixed to the end of the connecting cylinder (3).

5. The small-scale excavator for micro-excavation of earthwork in trenches as described in claim 4, characterized in that: The support rod is a balance rod (13) fixed parallel to the side wall of the cutting rod (11). A wedge is fixedly connected to the end of the balance rod (13). An inclined surface is provided on the inner side of the end wall of the housing (1), and the outer side wall of the wedge is attached to the inclined surface.

6. The small-scale excavator for micro-excavation of earthwork in trenches as described in claim 4, characterized in that: The cutting blocks (12) are equidistantly arranged along the axial direction of the cutting rod (11), and the top of the cutting blocks (12) is provided with a cutting edge. The cutting blocks (12) are inclined relative to the cutting rod (11).

7. The small-scale excavator for micro-excavation of earthwork in trenches as described in claim 1, characterized in that: A partition (5) is coaxially fixed to the end of the connecting cylinder (3), and the outer side wall of the partition (5) is in contact with the outer side wall of the housing (1).

8. The small-scale excavator for micro-excavation of earthwork in trenches as described in claim 7, characterized in that: The driving component includes a motor and a reducer fixed to the inner side wall of the housing (1). The output shaft of the motor is connected to the reducer. The reducer is connected to the outer end wall of the partition (5) through a transmission gear set (6). The driven gear in the transmission gear set (6) is coaxially fixed to the outer side wall of the partition (5).

9. The small-scale excavator for micro-excavation of earthwork in trenches as described in claim 1, characterized in that: A connecting plate (15) is horizontally fixed inside the closed end of the housing (1). An air inlet (16) and an air outlet (17) are respectively opened on the closed end of the housing (1). The air inlet (16) is located above the connecting plate (15), and the air outlet (17) is located below the connecting plate (15). A fan (14) is fixedly installed at the bottom of the connecting plate (15).

10. The small-scale excavator for micro-excavation of earthwork in trenches as described in claim 1, characterized in that: A handle (19) is fixed on the outer wall of the closed end of the housing (1), and the handle (19) is arranged on both sides of the housing (1).

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