CN113235685A

CN113235685A - Sprocket drive ditching machine

Info

Publication number: CN113235685A
Application number: CN202110606639.4A
Authority: CN
Inventors: 张征明; 高大诚; 胡雷; 陶海洋; 王羽良; 凌炎; 席江岳
Original assignee: China Railway Engineering Machinery Research and Design Institute Co Ltd
Current assignee: China Railway Engineering Machinery Research and Design Institute Co Ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2021-08-10

Abstract

The invention provides a sprocket transmission ditcher, which relates to the technical field of ditchers and comprises a rack, a traveling mechanism, a slotting device, a transverse sliding block, a transverse sliding oil cylinder, a swing oil cylinder and a rotary oil cylinder; the frame is connected with a traveling mechanism; the slotting device comprises a main shell and a sprocket transmission slotting mechanism which is rotationally connected with the main shell, and the rotary oil cylinder is suitable for driving the sprocket transmission slotting mechanism to rotate relative to the main shell; the main shell is connected to the frame through a transverse sliding block; a swing oil cylinder is connected between the main shell and the transverse sliding block and is suitable for driving the main shell to swing relative to the transverse sliding block so as to excavate a side slope, and the swing direction of the swing oil cylinder and the rotation direction of the rotary oil cylinder form a preset angle; a transverse moving oil cylinder is connected between the transverse moving sliding block and the rack and is suitable for driving the main shell to transversely move so as to excavate grooves with different widths. The sprocket transmission ditcher can dig grooves with different shapes, widths and depths, and is high in applicability.

Description

Sprocket drive ditching machine

Technical Field

The invention relates to the technical field of ditching machines, in particular to a sprocket transmission ditching machine.

Background

In order to avoid the pipeline from being damaged by human accidents and causing mechanical damage in the process of laying pipelines and lines, the most common protection method is trenching and burying. The conventional trenching machine generally adopts a chain trenching machine, soil is cut by driving a chain to operate, trenching operation is realized, the shape of a trenching groove is single, a deep groove with large width is difficult to excavate, and construction requirements of different occasions cannot be met.

Disclosure of Invention

The invention aims to provide a sprocket transmission ditcher to solve the technical problems of single slotting shape and slotting width depth of the existing ditcher.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a sprocket transmission ditcher comprises a rack, a traveling mechanism, a slotting device, a transverse sliding block, a transverse oil cylinder, a swing oil cylinder and a rotary oil cylinder;

the frame is connected with the travelling mechanism;

the grooving device comprises a main shell and a sprocket transmission grooving mechanism which is rotationally connected with the main shell, and the rotary oil cylinder is suitable for driving the sprocket transmission grooving mechanism to rotate around a first axis relative to the main shell so as to excavate grooves with different depths;

the main shell is connected to the rack through the transverse sliding block; the swing oil cylinder is connected between the main shell and the transverse sliding block and is suitable for driving the main shell to swing around a second axis relative to the transverse sliding block so as to excavate a side slope, and the first axis and the second axis form a preset angle; the transverse moving oil cylinder is connected between the transverse moving sliding block and the rack and is suitable for driving the main shell to transversely move so as to excavate grooves with different widths.

The sprocket transmission ditcher disclosed by the invention travels to a trench excavation position through the traveling mechanism; the rotating oil cylinder drives the sprocket transmission groove milling mechanism to rotate so as to cut into soil at different depths, and excavation of grooves at different depths is realized; when the excavated groove needs to be widened, the transverse moving oil cylinder drives the grooving device to transversely move through the transverse moving sliding block, and multiple times of excavation are carried out according to the widening requirement of the groove; the swing oil cylinder drives the main shell to drive the sprocket transmission groove milling mechanism to swing, the angle of the sprocket transmission groove milling mechanism cutting into the soil is adjusted, and a side slope is excavated; in addition, the trapezoidal groove can be excavated by combining the rotary swing of the rotary oil cylinder with the transverse movement of the transverse moving oil cylinder, the rotary oil cylinder drives the sprocket transmission groove milling mechanism to rotate for the first time, the transverse moving oil cylinder drives the grooving device to transversely dig shallow soil, then the rotary oil cylinder drives the sprocket transmission groove milling mechanism to continue to rotate downwards for the second time, and the transverse moving oil cylinder drives the grooving device to transversely dig deep soil to realize the excavation of the trapezoidal groove; therefore, the sprocket transmission ditcher realizes the excavation of grooves with different shapes, different widths and different depths, and has strong applicability.

Optionally, the sprocket drive ditcher further comprises a rotating shaft, the axis of the rotating shaft is the second axis, the rotating shaft penetrates through the main housing and is rotatably connected with the main housing, and two ends of the rotating shaft are respectively provided with one transverse sliding block.

Optionally, this sprocket drive ditching machine still includes the sideslip guide beam, main casing body both sides install on the frame the sideslip guide beam, the sideslip guide beam is in the orientation main casing body one side is equipped with the recess, the sideslip slider is in slide in the recess.

Optionally, the sprocket drive ditcher further comprises a wear plate, and the wear plate is mounted on the groove surface of the groove.

Optionally, the direction of the axis of the rotating shaft is parallel to the transmission direction of the sprocket transmission milling groove mechanism, and one end of the sprocket transmission milling groove mechanism is hinged to the main housing.

Optionally, the walking mechanism comprises a telescopic leg and a walking crawler, one end of the telescopic leg is connected with the frame, and the other end of the telescopic leg is connected with the walking crawler.

Optionally, the telescopic supporting leg comprises a telescopic oil cylinder, an upper sleeve and a lower sleeve, the upper sleeve is connected with the frame, the lower sleeve is connected with the walking crawler, the upper sleeve is sleeved outside the lower sleeve, and two ends of the telescopic oil cylinder are respectively connected with the upper sleeve and the lower sleeve.

Optionally, the walking mechanism further comprises an upper twisting seat and a lower twisting seat, one end of the upper twisting seat and one end of the lower twisting seat are hinged to the frame, and the other end of the upper twisting seat and the other end of the lower twisting seat are hinged to the telescopic supporting legs.

Optionally, the walking mechanism further comprises a support oil cylinder and a steering oil cylinder, the support oil cylinder is connected between the frame and the telescopic support leg, and the support oil cylinder is suitable for driving the telescopic support leg to rotate and lift;

the steering oil cylinder is connected between the telescopic supporting leg and the walking crawler, and the steering oil cylinder is suitable for driving the walking crawler to steer.

Optionally, the frame is a door-shaped structure, the number of the traveling mechanisms is four, and the four traveling mechanisms are respectively connected to four corners of the frame.

Drawings

FIG. 1 is a schematic view of an initial state of a sprocket driven ditcher in accordance with an embodiment of the present invention;

FIG. 2 is a schematic structural view of a sprocket drive ditcher according to an embodiment of the present invention in operation;

FIG. 3 is a schematic view of an installation structure of the telescopic legs and the walking track of the embodiment of the invention;

FIG. 4 is a schematic structural diagram of the sprocket-driven ditcher of the embodiment of the invention when excavating a rectangular trench;

FIG. 5 is a schematic structural diagram of the sprocket-driven ditcher of the embodiment of the invention when excavating a groove with a side slope;

FIG. 6 is a schematic structural diagram of the sprocket drive ditcher of the embodiment of the invention when excavating a shallow dovetail groove;

FIG. 7 is a schematic structural diagram of the sprocket-driven ditcher of the embodiment of the invention when excavating a deep layer of a trapezoidal groove.

Description of reference numerals:

1. a frame; 2. a telescopic leg; 21. a telescopic oil cylinder; 22. an upper sleeve; 23. a lower sleeve; 3. an upper twisting seat; 4. a lower twisting seat; 5. a support oil cylinder; 6. a walking crawler belt; 7. a steering cylinder; 8. a slotting device; 81. the sprocket drives the milling groove mechanism; 82. a main housing; 9. transversely moving the sliding block; 10. traversing the guide beam; 11. transversely moving the oil cylinder; 12. a swing oil cylinder; 13. rotating the oil cylinder; 14. a rotating shaft; 15. and (4) a groove.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, in the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", and the like in the embodiments indicate orientation words, which are used for simplifying the description of the positional relationship based on the drawings of the specification, and do not represent that elements, devices, and the like which are referred to must operate according to the operation, method, and configuration which are specified and defined in the specification, and such orientation terms do not constitute a limitation of the present invention.

Herein, a coordinate system XYZ is provided, wherein a forward direction of the X-axis represents a right direction, a backward direction of the X-axis represents a left direction, a forward direction of the Y-axis represents a front direction, a backward direction of the Y-axis represents a rear direction, a forward direction of the Z-axis represents an upper direction, and a backward direction of the Z-axis represents a lower direction.

As shown in fig. 1-2, the sprocket-driven ditcher of the embodiment of the invention comprises a frame 1, a traveling mechanism, a slotting device 8, a traverse slide block 9, a traverse oil cylinder 11, a swing oil cylinder 12 and a rotary oil cylinder 13;

the frame 1 is connected with the travelling mechanism;

the slotting device 8 comprises a main shell 82 and a sprocket transmission slotting mechanism 81 which is rotatably connected with the main shell 82, and the rotary oil cylinder 13 is suitable for driving the sprocket transmission slotting mechanism 81 to rotate around a first axis relative to the main shell 82 so as to excavate grooves with different depths;

the main shell 82 is connected to the frame 1 through the traverse slide 9; the swing oil cylinder 12 is connected between the main shell 82 and the traverse slide block 9, the swing oil cylinder 12 is suitable for driving the main shell 82 to swing around a second axis relative to the traverse slide block 9 so as to excavate a side slope, and the first axis and the second axis form a preset angle; the transverse moving oil cylinder 11 is connected between the transverse moving sliding block 9 and the rack 1, and the transverse moving oil cylinder 11 is suitable for driving the main shell 82 to transversely move so as to excavate grooves with different widths.

In this embodiment, the fixed end of the rotating cylinder 13 is hinged to the main housing 82, the movable end of the rotating cylinder 13 is hinged to the sprocket drive milling groove mechanism 81, and the rotating cylinder 13 is adapted to drive the sprocket drive milling groove mechanism 81 to rotate on the YZ plane; the fixed end of the swing oil cylinder 12 is hinged with the transverse sliding block 9, the movable end of the swing oil cylinder 12 is hinged with the main shell 82, and the swing oil cylinder 12 is suitable for driving the main shell 82 to swing on an XZ plane; the fixed end of the transverse moving oil cylinder 11 is hinged to the rack 1, the movable end of the transverse moving oil cylinder 11 is hinged to the transverse moving slide block 9, and the transverse moving oil cylinder 11 is suitable for driving the transverse moving slide block 9 to move along the X-axis direction.

Naturally, in order to facilitate the installation of the traverse cylinder 11, the swing cylinder 12, and the rotary cylinder 13, a plurality of supports for installing the cylinders may be disposed on the sprocket drive grooving mechanism 81, the main housing 82, the traverse slide 9, and the frame 1.

The two swing oil cylinders 12 are respectively located on the front side and the rear side (along the direction shown by the Y axis) of the main shell 82, the swing oil cylinders 12 on the two sides simultaneously drive the main shell 82 to rotate, and stability is improved. Similarly, the two rotary oil cylinders 13 are respectively located on the left side and the right side (the two sides along the X-axis direction) of the sprocket transmission milling groove mechanism 81, and the rotary oil cylinders 13 connect the main housing 82 with the sprocket transmission milling groove mechanism 81, so that the driving rotation stability is improved, and the influence on the slotting effect of the sprocket transmission milling groove mechanism 81 due to uneven single-side stress is avoided.

The sprocket transmission ditcher runs to the position near the trench to be dug through the running mechanism, and the slotting device 8 is positioned right above the trench to be dug. The sprocket transmission milling groove mechanism 81 is vertically arranged relative to the main shell 82, the sprocket transmission milling groove mechanism 81 performs transmission along the direction shown by the Y axis, the sprocket transmission milling groove mechanism 81 is rotationally connected relative to the main shell 82, the rotary oil cylinder 13 is connected between the sprocket transmission milling groove mechanism 81 and the main shell 82, the rotary oil cylinder 13 is suitable for driving the sprocket transmission milling groove mechanism 81 to rotate in a YZ plane, and when the sprocket transmission milling groove mechanism 81 vertically downwards (along the direction shown by the Z axis in the reverse direction) cuts into soil, an excavated groove 15 is a rectangular deep groove; when the sprocket transmission groove milling mechanism 81 cuts into soil at different depths, excavation of grooves at different depths can be achieved.

As shown in fig. 4, in order to widen the width of the rectangular trench to be excavated, the traverse cylinder 11 drives the main housing 82 to drive the sprocket drive milling groove mechanism 81 to move left and right (move along the X-axis direction), and the trench is continuously excavated, so that multiple times of excavation can be performed according to the width requirement of trench excavation, and the excavation requirement of trenches with different widths is met.

When the excavated groove 15 is a side slope or a V-shaped groove, the swing cylinder 12 drives the grooving device 8 to swing on an XZ plane, the sprocket transmission groove milling mechanism 81 of the grooving device 8 is inserted into soil at a certain inclination angle, the sprocket transmission groove milling mechanism 81 includes sprockets and milling teeth arranged on the sprockets, a driving motor drives the sprocket transmission to enable the milling teeth to cut into the soil to realize grooving, the milling teeth on two sides of the sprockets incline towards the outer sides of the sprockets and extend out of the sprockets, and the milling teeth on two sides of the sprockets are used for cutting into the soil to perform side slope excavation, as shown in fig. 5.

When the excavated groove 15 is a trapezoidal groove, the rotating cylinder 13 drives the sprocket transmission milling groove mechanism 81 to rotate downward for a certain angle and cut into soil, and then the traversing cylinder 11 drives the grooving device 8 to traverse, so as to excavate a groove with a large width in a shallow layer, as shown in fig. 6; then, the transverse moving oil cylinder 11 controls the grooving device 8 to move to the middle, the rotating oil cylinder 13 drives the sprocket transmission grooving mechanism 81 to continuously rotate downwards, a groove with a small deep layer width is excavated, and as shown in fig. 7, a trapezoidal groove can be formed through two times of excavation. Of course, in the actual construction process, the sprocket drive groove milling mechanism 81 may be rotated downward to perform the third excavation, and the groove width of the excavation groove is reduced to some extent compared with the previous excavation groove, so as to form a stepped groove.

Optionally, the sprocket drive ditcher further comprises a rotating shaft 14, the axis of the rotating shaft 14 is the second axis, the rotating shaft 14 passes through the main housing 82 and is rotatably connected with the main housing 82, and two ends of the rotating shaft 14 are respectively provided with one traverse sliding block 9.

In this embodiment, the rotating shaft 14 is disposed along the direction of the Z axis, the rotating shaft 14 vertically penetrates the main housing 82, the lateral sliders 9 at two ends of the rotating shaft 14 are symmetrically disposed at the front and rear sides of the main housing 82, and the main housing 82 is slidably connected to the rack 1 through the two lateral sliders 9, so as to improve the connection stability between the main housing 82 and the rack 1.

An outer extending shaft is mounted on a housing of the driving motor, the housing of the driving motor is rotatably connected with the main housing 82 through the outer extending shaft, an axis of the outer extending shaft is the first axis, and the first axis is relatively perpendicular to the second axis.

Optionally, the sprocket drive ditcher further comprises a traverse guide beam 10, the traverse guide beam 10 is mounted on the rack 1 on two sides of the main housing 82, a groove is formed in the traverse guide beam 10 facing one side of the main housing 82, and the traverse slider 9 slides in the groove.

In this embodiment, the traverse guide beam 10 is detachably connected to the rack 1, the traverse guide beam 10 is installed on the front and rear sides of the main housing 82, a U-shaped groove is formed in one side of the traverse guide beam 10 facing the main housing 82, an axis of the U-shaped groove is arranged along a direction indicated by a Y-axis, and a sliding direction of the traverse slider 9 is limited by the U-shaped groove.

In this embodiment, in order to improve the wear resistance of the traverse guide 10 and prevent the traverse guide 10 from being worn by the traverse slider 9 during the horizontal sliding, thereby affecting the guiding of the traverse guide 10, a wear plate is disposed on a surface of the traverse guide 10 in contact with the traverse slider 9, and the wear plate is fixed to the traverse guide 10 by bolts.

Optionally, the direction of the axis of the rotating shaft 14 is parallel to the transmission direction of the sprocket drive milling groove mechanism 81, and one end of the sprocket drive milling groove mechanism 81 is hinged to the main housing 82.

In this embodiment, the swing cylinder 12 drives the main housing 82 to rotate left and right around the rotating shaft 14, so as to drive the sprocket drive milling groove mechanism 81 to rotate a certain angle to the left and right; the rotating oil cylinder 13 can drive the sprocket transmission milling groove mechanism 81 to rotate up and down, and grooves with different shapes and depths can be milled through rotation matching in two different directions.

Optionally, the walking mechanism comprises a telescopic leg 2 and a walking crawler 6, one end of the telescopic leg 2 is connected with the frame 1, and the other end of the telescopic leg 2 is connected with the walking crawler 6.

In this embodiment, the telescopic legs 2 are arranged along the direction of the Z axis, the walking crawler 6 is arranged along the direction of the Y axis, and the walking crawler 6 drives the frame 1 to walk through the telescopic legs 2; the telescopic legs 2 are telescopic to drive the walking crawler 6 to cross the obstacle.

The telescopic supporting legs 2 can be in various telescopic modes, such as oil cylinder driving lifting and contracting, spring telescopic mode, telescopic joint telescopic mode and the like, and are not limited in detail here.

Optionally, as shown in fig. 3, the telescopic leg 2 includes a telescopic cylinder 21, an upper sleeve 22 and a lower sleeve 23, the upper sleeve 22 is connected to the frame 1, the lower sleeve 23 is connected to the walking crawler 6, the upper sleeve 22 is sleeved outside the lower sleeve 23, and two ends of the telescopic cylinder 21 are respectively connected to the upper sleeve 22 and the lower sleeve 23.

In this embodiment, the diameter of the upper sleeve 22 is slightly larger than that of the lower sleeve 23, and the upper sleeve 22 is sleeved outside the lower sleeve 23 and slidably connected with the lower sleeve 23. Conversely, the diameter of the lower sleeve 23 is slightly larger than the diameter of the upper sleeve 22.

The telescopic oil cylinder 21 stretches to drive the upper sleeve 22 to move relative to the lower sleeve 23, so that the purpose of adjusting the length of the telescopic supporting leg 2 is achieved, and the telescopic supporting leg is better suitable for different terrains.

Optionally, the running mechanism further comprises an upper twisting seat 3 and a lower twisting seat 4, one end of the upper twisting seat 3 and one end of the lower twisting seat 4 are hinged to the frame 1, and the other end of the upper twisting seat 3 and the other end of the lower twisting seat 4 are hinged to the telescopic supporting legs 2.

In this embodiment, go up hank seat 3 with lower hank seat 4 will flexible landing leg 2 supports the outside of frame 1 for the span increase between the flexible landing leg 2 of frame 1 both sides increases the removal space of slotting device 8 in the X axle direction, is convenient for open the wide groove.

The two ends of the upper twisting seat 3 are respectively provided with a clamping groove, and the two ends of the upper twisting seat 3 are respectively connected with the telescopic supporting legs 2 and the rack 1 in a clamped mode and then hinged through pins. The lower hinge base 4 is similar to the installation structure between the telescopic supporting leg 2 and the frame 1.

Optionally, the walking mechanism further comprises a support oil cylinder 5 and a steering oil cylinder 7, the support oil cylinder 5 is connected between the frame 1 and the telescopic support leg 2, and the support oil cylinder 5 is suitable for driving the telescopic support leg 2 to rotate and lift;

the steering oil cylinder 7 is connected between the telescopic supporting leg 2 and the walking crawler 6, and the steering oil cylinder 7 is suitable for driving the walking crawler 6 to steer.

In the embodiment, the leg oil cylinder 5 is used for lifting the telescopic leg 2 when crossing a pipeline; the steering oil cylinder 7 enables the walking crawler 6 to deflect a certain angle.

When the ditcher needs to cross a pipeline, the transverse moving oil cylinder 11 is controlled to drive the slotting device 8 to move towards one side far away from the pipeline, the steering oil cylinder 7 controls the walking crawler 6 to deflect a certain angle, the ditcher continuously moves forwards, the support oil cylinder 5 close to one side of the pipeline slowly lifts the telescopic support leg 2, the ditching machine continuously moves until the lifted telescopic support leg 2 crosses the pipeline, and the telescopic support leg 2 on the side is put down; and when the walking is continued until the telescopic supporting leg 2 at the other side is close to the pipeline, the telescopic supporting leg 2 at the side is controlled to lift and control the corresponding walking crawler 6 to turn, the walking is carried out until the telescopic supporting leg 2 at the side crosses the pipeline, the lifted telescopic supporting leg 2 is put down, and the steering oil cylinder 7 controls the walking crawler 6 to rotate by a proper angle so as to straighten the sprocket transmission ditcher.

Optionally, the frame 1 is a door-shaped structure, and four traveling mechanisms are provided and connected to four corners of the frame 1 respectively.

In the embodiment, four corners of the bottom of the gantry frame are provided with four traveling mechanisms, so that traveling stability is improved; a door-shaped frame is adopted to conveniently stretch across the groove to be excavated, and the travelling mechanisms on two sides of the frame 1 are positioned on two sides of the groove to be excavated; the slotting device 8 is installed inside the door-shaped frame, and during slotting, the slotting device 8 is positioned right above the groove to be dug.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims

1. A sprocket transmission ditcher is characterized by comprising a rack (1), a traveling mechanism, a slotting device (8), a transverse sliding block (9), a transverse oil cylinder (11), a swing oil cylinder (12) and a rotary oil cylinder (13);

the frame (1) is connected with the travelling mechanism;

the grooving device (8) comprises a main shell (82) and a sprocket transmission grooving mechanism (81) which is rotatably connected with the main shell (82), and the rotary oil cylinder (13) is suitable for driving the sprocket transmission grooving mechanism (81) to rotate around a first axis relative to the main shell (82) so as to excavate grooves with different depths;

the main shell (82) is connected to the frame (1) through the transverse sliding block (9); the swing oil cylinder (12) is connected between the main shell (82) and the transverse sliding block (9), the swing oil cylinder (12) is suitable for driving the main shell (82) to swing around a second axis relative to the transverse sliding block (9) so as to excavate a side slope, and the first axis and the second axis form a preset angle; the transverse moving sliding block (9) and the rack (1) are connected with the transverse moving oil cylinder (11), and the transverse moving oil cylinder (11) is suitable for driving the main shell (82) to transversely move so as to excavate grooves with different widths.

2. The sprocket drive ditcher as recited in claim 1, further comprising a rotating shaft (14), wherein the axis of the rotating shaft (14) is the second axis, the rotating shaft (14) passes through the main housing (82) and is rotatably connected with the main housing (82), and two ends of the rotating shaft (14) are respectively provided with one traversing slider (9).

3. The sprocket drive ditcher as set forth in claim 2, further comprising a traverse guide beam (10), the traverse guide beam (10) being mounted on the frame (1) on both sides of the main housing (82), the traverse guide beam (10) being provided with a groove on a side facing the main housing (82), the traverse slider (9) sliding in the groove.

4. The sprocket drive ditcher of claim 3, further comprising a wear plate mounted on a groove face of the recess.

5. The sprocket drive ditcher as set forth in claim 2, wherein the axis of the rotating shaft (14) is oriented parallel to a drive direction of the sprocket drive grooving mechanism (81), and one end of the sprocket drive grooving mechanism (81) is hinged to the main housing (82).

6. The sprocket drive ditcher as set forth in claim 1, wherein the running gear comprises a telescoping leg (2) and a running track (6), one end of the telescoping leg (2) being connected to the frame (1) and the other end of the telescoping leg (2) being connected to the running track (6).

7. The sprocket drive ditcher as recited in claim 6, wherein the telescopic leg (2) comprises a telescopic cylinder (21), an upper sleeve (22) and a lower sleeve (23), the upper sleeve (22) is connected with the frame (1), the lower sleeve (23) is connected with the walking crawler (6), the upper sleeve (22) is sleeved outside the lower sleeve (23), and two ends of the telescopic cylinder (21) are respectively connected with the upper sleeve (22) and the lower sleeve (23).

8. The sprocket drive ditcher as set forth in claim 6, wherein the running mechanism further comprises an upper hinge base (3) and a lower hinge base (4), one end of the upper hinge base (3) and one end of the lower hinge base (4) are hinged to the frame (1), and the other end of the upper hinge base (3) and the other end of the lower hinge base (4) are hinged to the telescopic legs (2).

9. The sprocket drive ditcher as set forth in claim 6, wherein the running mechanism further comprises a leg cylinder (5) and a steering cylinder (7), the leg cylinder (5) being connected between the frame (1) and the telescoping leg (2), the leg cylinder (5) being adapted to drive the telescoping leg (2) to rotate and lift;

the steering oil cylinder (7) is connected between the telescopic supporting leg (2) and the walking crawler belt (6), and the steering oil cylinder (7) is suitable for driving the walking crawler belt (6) to steer.

10. The sprocket drive ditcher as set forth in claim 1, wherein the frame (1) is a gate-shaped structure, and four traveling mechanisms are provided, and are respectively connected to four corners of the frame (1).