Adjusting device of drip irrigation tape deep burying machine

Abstract

The invention discloses a drip irrigation tape deep burying machine adjusting device, and relates to the field of agricultural equipment, the drip irrigation tape deep burying machine adjusting device comprises a rack, and the left end and the right end of the rear side face of the rack are rotationally connected with the front ends of two rotating plates through hinge seats respectively. The adjusting mechanism is arranged to be connected with the rack, when the tractor drives the device to move, a trench is formed in the ground through the furrowing blade, then the drive motor drives the winding roller to rotate to release a drip irrigation tape wound on the winding roller, and the drip irrigation tape is laid in the trench through the guide pipe to complete deep burying operation of the drip irrigation tape. Therefore, drip irrigation tape laying operation is rapidly completed through the device, the workload of farmers is effectively reduced, the deep burying depth of the drip irrigation tape is unified and standardized, the follow-up drip irrigation effect is effectively guaranteed, the angle of the rotating plate can be adjusted through the electric push rod to adjust the ditching depth of the ditching blade while the device is used, and the ditching efficiency is improved. And therefore, a user can conveniently adjust the burying depth of the drip irrigation tape according to actual requirements.

Description

Technical Field

[0001] The invention relates to agricultural equipment, in particular to an adjusting device for a drip irrigation belt deep burying machine. Background Art

[0002] Drip irrigation technology is a highly efficient agricultural irrigation technology that delivers water at a low flow rate directly to the vicinity of plant roots through a pipe system, thereby maximizing the use of water resources. It is particularly suitable for arid and semi-arid areas and for crops that require precise irrigation. In order to achieve drip irrigation, trenches must be dug first and then drip irrigation pipes must be buried. This process is relatively cumbersome. If the trenches are dug manually, the excavation depth cannot be unified and the excavation direction cannot be guaranteed. The buried drip irrigation pipes are also difficult to meet the design requirements, affecting the quality of drip irrigation. Therefore, a device is needed to realize trench excavation and drip irrigation pipe laying. Summary of the invention

[0003] The object of the present invention is to provide a drip irrigation tape deep embedding machine adjusting device to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A drip irrigation tape deep burying machine adjustment device, comprising a frame, the left and right ends of the rear side surface of the frame are rotatably connected to the front ends of two rotating plates through hinge seats, the rear ends of the two rotating plates are fixedly connected to the opposite ends of two support shafts, and the opposite ends of the two support shafts are rotatably connected to the two support wheels through bearings; The frame is provided with an adjustment mechanism, the front side of the frame is fixedly connected to the rear sides of two connecting sleeves at the same time, the two connecting sleeves are respectively sleeved with two supporting rods, and the frame is fixedly provided with a control box.

[0005] As a preferred technical solution of the present invention, the rear ends of the upper surfaces of the two rotating plates are rotatably connected to the rear ends of the two electric push rods through hinged seats, the front ends of the two electric push rods are rotatably connected to the rear end of the frame through hinged seats, and the input ends of the two electric push rods are electrically connected to the output end of the control box.

[0006] As a preferred technical solution of the present invention, two screw holes are provided on opposite sides of the two connecting sleeves, and the two screw holes are respectively threadedly connected to two limit screws, and the opposite ends of the two limit screws are respectively overlapped with opposite sides of the two support rods, and a group of towing components is fixedly arranged at the front end of the frame.

[0007] As a preferred technical solution of the present invention, the adjustment mechanism includes a dual-axis motor, which is fixedly connected to a mounting groove opened on the rear side of the frame through a mounting seat, and the output shafts at both ends of the dual-axis motor are respectively fixedly connected to the opposite ends of the two screws.

[0008] As a preferred technical solution of the present invention, the optical axes at opposite ends of the two screws are rotatably connected to the left and right sides of the mounting groove through bearings, the spiral directions of the thread grooves of the two screws are arranged in opposite directions, and the two screws are threadedly connected to the two screw holes respectively.

[0009] As a preferred technical solution of the present invention, the two screw holes are respectively opened at the front ends of the two translation plates, the front ends of the two translation plates are both sleeved in the mounting grooves, the upper surfaces of the two translation plates are respectively fixedly connected to the rear ends of the two connecting frames, the front ends of the two connecting frames are respectively fixedly connected to the upper surfaces of the two sliding sleeves, the two sliding sleeves are both sleeved with the racks, the opposite surfaces of the two translation plates are respectively fixedly connected to the transmitting end and the receiving end of the infrared rangefinder, and the infrared rangefinder is electrically connected to the control box.

[0010] As a preferred technical solution of the present invention, the front side surfaces of the two sliding sleeves are respectively fixedly connected to the bottom ends of the rear side surfaces of the two fixing plates, the upper ends of the two fixing plates are fixedly connected to the bottom surface of the fixing frame, the upper ends of the left and right side surfaces of each fixing frame are rotatably connected to the rotating shaft through a bearing, and the opposite ends of the two rotating shafts overlap the two ends of the winding roller; Square holes are provided inside the two rotating shafts and the winding roller, and the three square holes are all sleeved with connecting rods. One end of the connecting rod is rotatably connected to a limit plate through a bearing, and the side surface of the limit plate overlaps the end surface of one of the rotating shafts.

[0011] As a preferred technical solution of the present invention, the other end of the connecting rod is fixedly connected to one end of the bolt through a bearing, the bolt is threadedly connected to the nut, the end face of the nut overlaps the end face of the rotating shaft, one of the outer side faces of the rotating shaft is fixedly connected to gear two, the gear two is meshingly connected to gear one, the gear one is fixedly set on the output shaft of the driving motor, the driving motor is fixedly connected to the fixing frame, the driving motor and the dual-axis motor are both electrically connected to the control box, and a straight groove is provided on the end face of the bolt.

[0012] As a preferred technical solution of the present invention, the rear ends of the bottom surfaces of the two translation plates are respectively fixedly connected to the upper ends of the two fixed plates 2, and the bottom ends of the front side surfaces of the two fixed plates 2 are respectively fixedly connected to the rear ends of the two trenching shovels.

[0013] As a preferred technical solution of the present invention, the rear side surface of each of the fixed plates 2 is fixedly connected to the front ends of the two fixed plates 3, the four fixed plates 3 are grouped in twos and the rear ends of the two groups of fixed plates 3 are respectively fixedly connected to two guide tubes, and the guide tubes correspond to the front and rear of the trenching shovel.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention is connected with the frame by arranging an adjustment mechanism, and when the device is used, the frame can be connected with the tractor by using a towing assembly, and when the tractor drives the device to move, a trenching shovel is used to form a trench on the ground, and then a driving motor is used to drive the winding roller to rotate to release the drip irrigation tape rolled on it, and a guide pipe is used to lay the drip irrigation tape in the trench to complete the deep burial operation of the drip irrigation tape, so that the laying operation of the drip irrigation tape can be quickly completed by using the device, and the workload of growers is effectively reduced. The deep burial depth of the drip irrigation tape is unified and standardized, and the subsequent drip irrigation effect is effectively guaranteed. When the device is used, the angle of the rotating plate can be adjusted by using an electric push rod, so as to adjust the height difference between the supporting wheel and the trenching shovel to adjust the trenching depth of the trenching shovel, so as to facilitate the user to adjust the burial depth of the drip irrigation tape according to actual needs.

[0015] 2. The present invention connects a translation plate with a screw rod, and connects a trenching shovel, a fixed frame and the translation plate. When using the trenching shovel and the winding roller to perform trenching and drip irrigation tape laying operations, the user can control the dual-axis motor to drive the two screw rods to rotate when the dual-axis motor works. When the screws rotate, the two translation plates are driven to move in opposite directions through the screw holes. At this time, the movement of the translation plate is used to adjust the spacing between the two trenching shovels and the two winding rollers, so that the user can adjust the buried spacing of the drip irrigation tape according to the type of crops planted and the drip irrigation requirements, thereby effectively improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the connecting sleeve structure of the present invention; Figure 4 It is a schematic diagram of the structure of the regulating mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the translation plate of the present invention; Figure 6 It is a schematic diagram of the sliding sleeve structure of the present invention; Figure 7 It is a schematic diagram of the winding roller structure of the present invention; Figure 8 It is a schematic diagram of the structure of the fixing frame of the present invention; Fig. 9 It is a schematic diagram of the connecting rod structure of the present invention.

[0017] In the figure: 1. frame; 2. support wheel; 3. adjustment mechanism; 31. double-axis motor; 32. screw; 33. fixed plate 1; 34. sliding sleeve; 35. trenching shovel; 36. fixed plate 2; 37. translation plate; 38. guide tube; 39. connecting frame; 310. fixed frame; 311. winding roller; 312. screw hole 1; 313. fixed plate 3; 314. driving motor; 315. gear 1; 316. gear 2; 317. limit plate; 318. rotating shaft; 319. square hole; 320. nut; 321. bolt; 322. connecting rod; 323. slot; 4. connecting sleeve; 5. support rod; 6. towing assembly; 7. control box; 8. rotating plate; 9. electric push rod; 10. support shaft; 11. limit screw; 12. screw hole 2. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-9 The present invention provides a technical solution of a drip irrigation belt deep-buried machine adjustment device: comprising a frame 1, the left and right ends of the rear side of the frame 1 are rotatably connected to the front ends of two rotating plates 8 through hinged seats, the rear ends of the two rotating plates 8 are fixedly connected to the opposite ends of two support shafts 10, and the opposite ends of the two support shafts 10 are rotatably connected to the two support wheels 2 through bearings; An adjusting mechanism 3 is provided on the frame 1 . The front side of the frame 1 is fixedly connected to the rear sides of two connecting sleeves 4 at the same time. The two connecting sleeves 4 are respectively sleeved with two supporting rods 5 . A control box 7 is fixedly provided on the frame 1 .

[0020] The rear ends of the upper surfaces of the two rotating plates 8 are rotatably connected to the rear ends of the two electric push rods 9 through hinged seats, and the front ends of the two electric push rods 9 are rotatably connected to the rear end of the frame 1 through hinged seats. The input ends of the two electric push rods 9 are electrically connected to the output ends of the control box 7. When using the present device to bury the drip irrigation tape, the user can use the towing parts to connect the frame 1 to the tractor, and then use the control box 7 to control the extension and retraction of the electric push rods 9. When the electric push rods 9 are extended and retracted, they drive the rotating plate 8 to rotate to adjust the position of the support wheel 2. When the height difference between the support wheel 2 and the trenching shovel 35 is adjusted to an appropriate degree, the extension and retraction of the electric push rods 9 are stopped, thereby adjusting the height difference between the support wheel 2 and the trenching shovel 35 to adjust the trenching depth of the trenching shovel 35, thereby facilitating the user to adjust the burying depth of the drip irrigation tape according to actual needs.

[0021] The opposite sides of the two connecting sleeves 4 are provided with screw holes 12, which are respectively threadedly connected to the two limit screws 11, and the opposite ends of the two limit screws 11 are respectively overlapped with the opposite sides of the two support rods 5. A set of towing components 6 is fixedly arranged at the front end of the frame 1.

[0022] The adjustment mechanism 3 includes a dual-axis motor 31 , which is fixedly connected to a mounting slot provided on the rear side of the frame 1 via a mounting seat, and output shafts at both ends of the dual-axis motor 31 are fixedly connected to opposite ends of two screw rods 32 .

[0023] The optical axes at the opposite ends of the two screw rods 32 are rotatably connected to the left and right sides of the mounting groove through bearings. The spiral directions of the thread grooves of the two screw rods 32 are arranged in opposite directions. The two screw rods 32 are threadedly connected to the two screw holes 312 respectively.

[0024] Two screw holes 312 are respectively provided at the front ends of the two translation plates 37, the front ends of the two translation plates 37 are sleeved in the mounting grooves, the upper surfaces of the two translation plates 37 are respectively fixedly connected to the rear ends of the two connecting frames 39, the front ends of the two connecting frames 39 are respectively fixedly connected to the upper surfaces of the two sliding sleeves 34, the two sliding sleeves 34 are sleeved with the frame 1, the opposite surfaces of the two translation plates 37 are respectively fixedly connected to the transmitting end and the receiving end of the infrared rangefinder, and the infrared rangefinder is electrically connected to the control box 7. When using the device, the user can control the dual-axis motor 31 to work, and the dual-axis motor 31 drives the two The screw rod 32 rotates, and when the screw rod 32 rotates, the two translation plates 37 are driven to move in opposite directions through the screw hole 312. At this time, the movement of the translation plate 37 is used to adjust the spacing between the two trenching shovels 35 and the two winding rollers 311. When the translation plate 37 moves, the infrared rangefinder is used to measure and determine the spacing between the two translation plates 37 and the trenching shovels 35. When the spacing between the two translation plates 37 reaches a suitable distance, the dual-axis motor 31 can be turned off. This makes it convenient for users to adjust the buried spacing of the drip irrigation belt according to the type of crops planted and the drip irrigation requirements, effectively improving the applicability of the device.

[0025] The front side surfaces of the two sliding sleeves 34 are respectively fixedly connected to the bottom ends of the rear side surfaces of the two fixing plates 1 33, and the upper ends of the two fixing plates 1 33 are fixedly connected to the bottom surface of the fixing frame 310. The upper ends of the left and right side surfaces of each fixing frame 310 are rotatably connected to the rotating shaft 318 through bearings, and the opposite ends of the two rotating shafts 318 overlap the two ends of the winding roller 311. Square holes 319 are provided inside the two rotating shafts 318 and the winding roller 311, and the three square holes 319 are all sleeved with the connecting rod 322. One end of the connecting rod 322 is rotatably connected to the limit plate 317 through a bearing, and the side of the limit plate 317 overlaps the end face of one of the rotating shafts 318. By providing square holes 319 in the rotating shaft 318 and the winding roller 311, and arranging the connecting rod 322 and the square hole 319 to connect the winding roller 311 with the rotating shaft 318 to support and fix the winding roller 311, it is convenient for the user to disassemble, assemble and replace the winding roller 311, and when the driving motor 314 drives the rotating shaft 318 to rotate, the connecting rod 322 and the square hole 319 can also be used to drive the winding roller 311 to rotate and release the drip irrigation tape.

[0026] The other end of the connecting rod 322 is fixedly connected to one end of the bolt 321 through a bearing, the bolt 321 is threadedly connected to the nut 320, the end face of the nut 320 overlaps the end face of the rotating shaft 318, the outer side face of one of the rotating shafts 318 is fixedly connected to the gear 2 316, the gear 2 316 is meshedly connected to the gear 1 315, the gear 1 315 is fixedly set on the output shaft of the driving motor 314, the driving motor 314 is fixedly connected to the fixing frame 310, the driving motor 314 and the dual-axis motor 31 are both electrically connected to the control box 7, and a slot 323 is provided on the end face of the bolt 321. By providing the slot 323 on the end face of the bolt 321, when the nut 320 is connected to the bolt 321, a tool such as a screwdriver can be inserted into the slot 323 to fix the bolt 321, so that the user can connect the nut 320 to the bolt 321 to limit and fix the connecting rod 322.

[0027] The rear ends of the bottom surfaces of the two translation plates 37 are fixedly connected to the upper ends of the two second fixing plates 36 , respectively, and the bottom ends of the front side surfaces of the two second fixing plates 36 are fixedly connected to the rear ends of the two trenching shovels 35 , respectively.

[0028] The rear side surface of each fixing plate 2 36 is fixedly connected to the front end of the two fixing plates 313, the four fixing plates 313 are grouped in pairs and the rear ends of the two groups of fixing plates 313 are respectively fixedly connected to the two guide tubes 38, the guide tubes 38 correspond to the front and back of the trenching shovel 35, when laying the drip irrigation tape, the drip irrigation tape on the winding roller 311 can be pulled out so that the drip irrigation tape passes through the guide tubes 38, so that the guide tubes 38 are used to guide and limit the drip irrigation tape when laying the drip irrigation tape, and then the drip irrigation tape is accurately laid in the groove opened on the ground to improve the laying effect of the device.

[0029] The operating steps of the present invention are: When using the device to bury the drip irrigation tape, the user can use the towing parts to connect the frame 1 to the tractor, and then use the control box 7 to control the extension and retraction of the electric push rod 9. When the electric push rod 9 is extended and retracted, it drives the rotating plate 8 to rotate to adjust the position of the support wheel 2. When the height difference between the support wheel 2 and the trenching shovel 35 is adjusted to a suitable level, the extension and retraction of the electric push rod 9 is stopped. At this time, the user can place the winding roller 311 with the drip irrigation tape rolled up on the upper end of the fixing frame 310, and insert the connecting rod 322 into the square hole 319 to support the winding roller 311. Then the user can connect the nut 320 with the bolt 321 to limit the connecting rod 322. And the user can adjust the buried spacing of the drip irrigation belt according to the type of crop planted and the drip irrigation demand. At this time, the user can control the dual-axis motor 31 to work. When the dual-axis motor 31 works, it drives the two screws 32 to rotate. When the screws 32 rotate, they drive the two translation plates 37 to move in opposite directions through the screw holes 312. At this time, the movement of the translation plate 37 is used to adjust the spacing between the two trenching shovels 35 and the two winding rollers 311. When the translation plate 37 moves, the infrared rangefinder is used to measure and determine the spacing between the two translation plates 37 and the trenching shovel 35. When the spacing between the two translation plates 37 reaches a suitable distance, the dual-axis motor 31 can be turned off. When laying the drip irrigation tape, the user can pull one end of the drip irrigation tape to make the drip irrigation tape pass through the guide tube 38, and use a tractor to drive the device to move, and control the drive motor 314 to work. When the device moves, a trenching shovel 35 is used to form a groove on the ground. When the drive motor 314 works, the gear 1 315 and the gear 2 316 drive the rotating shaft 318 and the winding roller 311 to rotate to release the drip irrigation tape, so that the drip irrigation tape passes through the guide tube 38 and is laid in the groove opened on the ground.

[0030] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drip irrigation tape deep embedding machine adjustment device, comprising a frame (1), characterized in that: The left and right ends of the rear side surface of the frame (1) are rotatably connected to the front ends of the two rotating plates (8) through hinged seats, the rear ends of the two rotating plates (8) are fixedly connected to the opposite ends of the two support shafts (10), and the opposite ends of the two support shafts (10) are rotatably connected to the two support wheels (2) through bearings; The frame (1) is provided with an adjustment mechanism (3), the front side of the frame (1) is fixedly connected to the rear sides of two connecting sleeves (4) at the same time, the two connecting sleeves (4) are respectively sleeved with two support rods (5), and the frame (1) is fixedly provided with a control box (7).

2. The drip irrigation tape deep embedding machine adjustment device according to claim 1, characterized in that: The rear ends of the upper surfaces of the two rotating plates (8) are rotatably connected to the rear ends of the two electric push rods (9) through hinged seats, the front ends of the two electric push rods (9) are rotatably connected to the rear end of the frame (1) through hinged seats, and the input ends of the two electric push rods (9) are electrically connected to the output end of the control box (7).

3. The drip irrigation tape deep embedding machine adjustment device according to claim 1, characterized in that: The two connecting sleeves (4) are provided with two screw holes (12) on opposite sides thereof. The two screw holes (12) are respectively threadedly connected to two limit screws (11). The opposite ends of the two limit screws (11) are respectively overlapped with the opposite sides of the two support rods (5). A set of towing components (6) is fixedly provided at the front end of the frame (1).

4. The drip irrigation tape deep embedding machine adjustment device according to claim 1, characterized in that: The adjustment mechanism (3) comprises a dual-axis motor (31), the dual-axis motor (31) being fixedly connected to a mounting groove provided on the rear side of the frame (1) via a mounting seat, and the output shafts at both ends of the dual-axis motor (31) being fixedly connected to the opposite ends of two screw rods (32) respectively.

5. The drip irrigation tape deep embedding machine adjusting device according to claim 4 is characterized in that: The optical axes at the opposite ends of the two screw rods (32) are rotatably connected to the left and right sides of the installation groove through bearings, respectively; the spiral directions of the thread grooves of the two screw rods (32) are arranged in opposite directions; and the two screw rods (32) are threadedly connected to the two screw holes (312) respectively.

6. The drip irrigation tape deep embedding machine adjustment device according to claim 5, characterized in that: The two screw holes (312) are respectively opened at the front ends of the two translation plates (37), the front ends of the two translation plates (37) are sleeved in the mounting grooves, the upper surfaces of the two translation plates (37) are respectively fixedly connected to the rear ends of the two connecting frames (39), the front ends of the two connecting frames (39) are respectively fixedly connected to the upper surfaces of the two sliding sleeves (34), the two sliding sleeves (34) are sleeved with the frame (1), the opposite surfaces of the two translation plates (37) are respectively fixedly connected to the transmitting end and the receiving end of the infrared rangefinder, and the infrared rangefinder is electrically connected to the control box (7).

7. The drip irrigation tape deep embedding machine adjustment device according to claim 6, characterized in that: The front side surfaces of the two sliding sleeves (34) are respectively fixedly connected to the bottom ends of the rear side surfaces of the two fixing plates (33); the upper ends of the two fixing plates (33) are fixedly connected to the bottom surface of the fixing frame (310); the upper ends of the left and right side surfaces of each fixing frame (310) are rotatably connected to the rotating shaft (318) via a bearing; and the opposite ends of the two rotating shafts (318) overlap the two ends of the winding roller (311); The two rotating shafts (318) and the winding roller (311) are each provided with a square hole (319), and the three square holes (319) are all sleeved with a connecting rod (322). One end of the connecting rod (322) is rotatably connected to a limit plate (317) via a bearing, and a side surface of the limit plate (317) overlaps an end surface of one of the rotating shafts (318).

8. The drip irrigation tape deep embedding machine adjustment device according to claim 7, characterized in that: The other end of the connecting rod (322) is fixedly connected to one end of a bolt (321) via a bearing. The bolt (321) is threadedly connected to a nut (320). The end face of the nut (320) overlaps the end face of the rotating shaft (318). The outer side face of one of the rotating shafts (318) is fixedly connected to a second gear (316). The second gear (316) is meshingly connected to a first gear (315). The first gear (315) is fixedly arranged on an output shaft of a driving motor (314). The driving motor (314) is fixedly connected to a fixing frame (310). The driving motor (314) and the dual-axis motor (31) are both electrically connected to a control box (7). A slot (323) is provided on the end face of the bolt (321).

9. The drip irrigation tape deep embedding machine adjustment device according to claim 6, characterized in that: The rear ends of the bottom surfaces of the two translation plates (37) are respectively fixedly connected to the upper ends of the two second fixed plates (36), and the bottom ends of the front side surfaces of the two second fixed plates (36) are respectively fixedly connected to the rear ends of the two trenching shovels (35).

10. The drip irrigation tape deep embedding machine adjusting device according to claim 9, characterized in that: The rear side surface of each of the second fixing plates (36) is fixedly connected to the front ends of the two third fixing plates (313), the four third fixing plates (313) are arranged in groups of two, and the rear ends of the two groups of third fixing plates (313) are respectively fixedly connected to the two guide tubes (38), and the guide tubes (38) correspond to the trenching shovel (35) in front and back.

Images