Double-disc ditcher

Abstract

The utility model relates to the technical field of agricultural machinery, and provides a double-disc ditcher which comprises a rack, the top end of the rack is fixedly connected with a supporting frame assembly, the two sides of the rack are fixedly connected with outer soil retaining plates, the inner walls of the outer soil retaining plates are rotationally connected with milling and polishing discs, the surfaces of the milling and polishing discs are fixedly connected with mounting seats at equal angles, and the mounting seats are fixedly connected with the supporting frame assembly. A clamping groove is formed in one end of the mounting base, a ditching cutter is movably connected to one end of the mounting base, a clamping block extending into the clamping groove is fixedly connected to one end of the ditching cutter, and a fixing screw hole in threaded fit with a fixing bolt is formed in one side of the clamping block. The inner soil retaining plate is pulled to slide to a proper position, the inner soil retaining plate is limited and fixed after sliding by means of thread fit between the adjusting bolt and the interior of the adjusting screw hole, the overall width of the inner soil retaining plate and the outer soil retaining plate can be changed, and the soil retaining requirements under different conditions can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a double-disc trencher. Background Art

[0002] A disc trencher is a farmland construction machine that uses a rotating milling and throwing disc as its main working part to build drainage and irrigation ditches, while a double disc trencher has two symmetrically configured milling and throwing discs on the left and right. During operation, the two discs simultaneously mill and throw the soil on both sides of the ditch, making it widely used in trenching in modern agricultural production.

[0003] After searching, the existing patent (Announcement No.: CN208490185U) discloses a double disc trenching machine, including a frame, a box, and a disc trenching assembly. A support rod assembly is provided at the front end of the frame, a box is provided in the middle, and a transmission mechanism is provided in the box. The transmission mechanism is provided with a power input shaft along the longitudinal direction of the frame, and two power output shafts are symmetrically arranged in a vertical direction to the power input shaft. The angle between the two power output shafts is 120°-165°. The power input shaft and the power output shaft are driven by gears. The output ends of the two power output shafts are respectively connected to corresponding disc trenching assemblies. The disc trenching assembly includes a disc arranged on the power output shaft and a plurality of trenching knives arranged on the edge of the disc. The angle between the two discs is 15°-60°. The trenching knives include single knives and double knives. The single knives and the double knives are arranged at equal distances on the edge of the disc. The device adopts a method of arranging a single blade and double blades at intervals and setting an angle of the trenching disc, which reduces the force on the trenching blade, maintains the stability of the trenching blade, reduces its damage rate, and improves the efficiency of the trenching machine.

[0004] However, in the above scheme, it is inconvenient to adjust the width of the retaining board. The existing retaining board has a fixed width and cannot be adjusted according to different geological soil conditions and the depth and inclination angle of the milling disc trenching, which makes the retaining effect less than ideal and still causes some soil splashing, resulting in inconvenience in its use.

[0005] In view of this, the utility model proposes a double-disc trencher. Utility Model Content

[0006] The utility model provides a double-disc trencher, which solves the problem of inconvenience in adjusting the width of the retaining plate in the related technology.

[0007] The technical solution of the utility model is as follows: a double-disc trencher comprises a frame, the top of the frame is fixedly connected to a support frame assembly, both sides of the frame are fixedly connected to outer retaining plates, an adjustment component is arranged inside the outer retaining plate, the inner wall of the outer retaining plate is rotatably connected to a milling disc, the surface of the milling disc is fixedly connected to a mounting seat at equal angles, one end of the mounting seat is provided with a slot, one side of the mounting seat is movably connected with a fixing bolt extending to the inside of the slot, one end of the mounting seat is movably connected with a trenching knife, one end of the trenching knife is fixedly connected with a clamping block extending to the inside of the slot, one side of the clamping block is provided with a fixing screw hole threadably matched with the fixing bolt, and one side of the mounting seat is provided with an anti-loosening component.

[0008] The adjusting component includes a slide groove, which is arranged at equal intervals on the inner wall of the outer retaining plate, and an adjusting bolt is movably connected at the middle position of one end of the top of the outer retaining plate. The inner retaining plate is movably connected to the inner retaining plate inside the outer retaining plate, and adjusting screw holes threadedly matched with the adjusting bolts are arranged at equal intervals at the middle position of the top of the inner retaining plate. Sliding plates are fixedly connected at equal intervals on both sides of the inner retaining plate. By pulling the inner retaining plate to slide to a suitable position, and then using the adjusting bolts to cooperate with the threads inside the adjusting screw holes, the inner retaining plate can be limited and fixed after sliding, and the overall width of the inner and outer retaining plates can be changed to meet the retaining needs in different situations, thereby avoiding poor retaining effects due to different geological soil conditions and the depth and inclination angle of the ditching of the milling and throwing disc.

[0009] Preferably, the upper end of the adjusting bolt surface is fixedly connected with an anti-slip convex strip at an equal angle, and the shape of the anti-slip convex strip in a top view is an arc, which increases the friction between the user's fingers and the adjusting bolt, thereby facilitating the user to turn the adjusting bolt more smoothly.

[0010] Preferably, a sliding structure is formed between the sliding plate and the interior of the slide groove, and the cross-section of the sliding plate and the slide groove is in the shape of an inverted isosceles trapezoid, thereby improving the smoothness of sliding between the inner retaining plate and the outer retaining plate.

[0011] Preferably, the anti-loosening component includes a fixing groove, which is provided on one side of the mounting seat, and a return spring is fixedly connected to the inner wall of the fixing groove, one end of the return spring is fixedly connected to a sliding block, and one end of the sliding block is fixedly connected to a clamping block extending to the outside of the mounting seat, and the elastic force of the return spring is utilized to make the sliding of the sliding block drive the clamping block to return to its original position, and then clamp with one side of the fixing bolt to prevent the fixing bolt from accidentally loosening the thread and affecting the firmness and stability of the ditching knife installation.

[0012] Preferably, a sliding structure is formed between the sliding block and the interior of the fixing groove, and the shape of the fixing groove and the sliding block in a side view is convex, thereby improving the stability of the back-and-forth sliding of the clamping block.

[0013] Preferably, the inner wall of the clamping block is in a "<" shape, and a clamping structure is formed between the inner wall of the clamping block and one end of the fixing bolt, which facilitates the clamping of the clamping block to one end of the fixing bolt, thereby preventing the thread of the fixing bolt from loosening.

[0014] Preferably, a locking structure is formed between the clamping block and the inside of the clamping slot, and the cross-section of the clamping slot and the clamping block is in a cross shape, thereby improving the firmness and stability of the initial clamping installation between the grooving knife and the mounting seat.

[0015] Preferably, plowshares are fixedly connected to both sides of the frame on one side of the bottom end of the outer retaining plate, and the cross-section of the plowshare is arc-shaped, which can remove the soil that falls into the bottom of the ditch when ditching, and compact the bottom of the ditch to ensure that the bottom of the ditch is flat.

[0016] The working principle and beneficial effects of the utility model are:

[0017] 1. The utility model provides an adjustment component and an outer retaining plate, utilizes the sliding of the sliding plate and the inside of the slide groove, so that the inner retaining plate and the outer retaining plate can slide smoothly, and utilizes the adjustment bolt and the thread inside the adjustment screw hole to cooperate to achieve the limit fixation of the inner retaining plate after sliding, thereby changing the overall width of the inner retaining plate and the outer retaining plate, so that it can meet the retaining needs under different conditions, avoid different geological soil conditions and the depth and inclination angle of the milling disc trenching resulting in poor retaining effect, facilitate the user to perform trenching operations on different soils, improve its practicality, and thus achieve the function of facilitating the adjustment of the width of the retaining plate;

[0018] 2. The utility model provides an anti-loosening component, utilizes the engagement of the clamping block with the inside of the clamping groove, and then utilizes the cooperation of the fixing bolt with the thread inside the fixing screw hole to realize the disassembly and assembly between the trenching knife and the mounting seat, so that the worn trenching knife can be easily disassembled, maintained or replaced. At the same time, after the fixing bolt is tightened, the elastic force of the reset spring is utilized to make the sliding block slide and drive the clamping block to return to its original position, and then clamp with one side of the fixing bolt to prevent the fixing bolt from accidentally loosening the thread and affecting the firmness and stability of the trenching knife installation, and thus prevent the fixing bolt from loosening the thread due to the working vibration of the milling disc and affecting the trenching operation of the trenching knife, thereby realizing the function of facilitating the bolt tightening and preventing loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the inner retaining plate of the utility model after explosion;

[0022] Figure 3 This is a schematic diagram of the overall structure of the trenching knife of the utility model after the explosion when viewed from above;

[0023] Figure 4 It is a schematic diagram of the explosion-enlarged structure of the anti-loosening component of the utility model;

[0024] Figure 5 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 6 For the utility model Figure 2 Enlarged structural diagram at B in the middle.

[0026] In the figure: 1. adjustment component; 101. inner retaining plate; 102. adjustment bolt; 103. adjustment screw hole; 104. anti-skid convex strip; 105. sliding plate; 106. slide groove; 2. support frame assembly; 3. outer retaining plate; 4. frame; 5. trenching knife; 6. mounting seat; 7. plow shovel; 8. milling disc; 9. anti-loosening component; 901. reset spring; 902. fixing groove; 903. sliding block; 904. clamping block; 10. clamping groove; 11. fixing screw hole; 12. clamping block; 13. fixing bolt. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] The preferred embodiment of the double disc trencher provided by the utility model is as follows: Figures 1 to 6 As shown: a double-disc trencher, including a frame 4, the top of the frame 4 is fixedly connected to a support frame assembly 2, both sides of the frame 4 are fixedly connected to outer retaining plates 3, the inner part of the outer retaining plates 3 is provided with an adjusting component 1, the inner wall of the outer retaining plate 3 is rotatably connected to a milling disc 8, the surface of the milling disc 8 is fixedly connected to a mounting seat 6 at an equal angle, one end of the mounting seat 6 is provided with a slot 10, one side of the mounting seat 6 is movably connected with a fixing bolt 13 extending to the inside of the slot 10, one end of the mounting seat 6 is movably connected with a trenching knife 5, one end of the trenching knife 5 is fixedly connected with a clamping block 12 extending to the inside of the slot 10, one side of the clamping block 12 is provided with a fixing screw hole 11 threadedly matched with the fixing bolt 13, and one side of the mounting seat 6 is provided with an anti-loosening component 9.

[0030] The adjustment component 1 includes a slide groove 106, which is evenly spaced on the inner wall of the outer retaining plate 3. An adjusting bolt 102 is movably connected to the middle position of the top end of the outer retaining plate 3. The inner retaining plate 101 is movably connected inside the outer retaining plate 3. Adjusting screw holes 103 that are threadedly matched with the adjusting bolts 102 are evenly spaced at the middle position of the top of the inner retaining plate 101. Sliding plates 105 are evenly fixedly connected on both sides of the inner retaining plate 101. By pulling the inner retaining plate 101 to slide to a suitable position, the adjusting bolts 102 are matched with the threads inside the adjusting screw holes 103 to achieve limited fixation of the inner retaining plate 101 after sliding, thereby changing the overall width of the inner retaining plate 101 and the outer retaining plate 3, so that it can meet the retaining needs under different circumstances.

[0031] In this embodiment, the upper end of the surface of the adjusting bolt 102 is fixedly connected with an anti-slip ridge 104 at an equal angle, and the shape of the anti-slip ridge 104 in a top view is arc-shaped. The arc-shaped anti-slip ridge 104 is utilized to increase the friction between the user's fingers and the adjusting bolt 102, thereby facilitating the user to rotate the adjusting bolt 102 more smoothly.

[0032] In this embodiment, a sliding structure is formed between the sliding plate 105 and the inside of the slide groove 106, and the cross-section of the sliding plate 105 and the slide groove 106 is inverted isosceles trapezoidal. The sliding between the inverted isosceles trapezoidal sliding plate 105 and the inside of the slide groove 106 is utilized to improve the smoothness of the sliding between the inner retaining plate 101 and the outer retaining plate 3.

[0033] Example 2

[0034] On the basis of Example 1, the preferred embodiment of the double disc trencher provided by the utility model is as follows Figures 1 to 6 As shown: the anti-loosening component 9 includes a fixing groove 902, which is opened on one side of the mounting seat 6, and the inner wall of the fixing groove 902 is fixedly connected with a return spring 901, one end of the return spring 901 is fixedly connected with a sliding block 903, and one end of the sliding block 903 is fixedly connected with a clamping block 904 extending to the outside of the mounting seat 6. The elastic force of the return spring 901 is utilized to make the sliding block 903 slide and drive the clamping block 904 to return to its original position, and then clamp with one side of the fixing bolt 13, so as to prevent the fixing bolt 13 from accidentally loosening the thread and affecting the firmness and stability of the installation of the trenching knife 5.

[0035] In this embodiment, a sliding structure is formed between the sliding block 903 and the interior of the fixed groove 902, and the shape of the fixed groove 902 and the sliding block 903 in the side view is convex. The sliding of the convex sliding block 903 and the interior of the fixed groove 902 is used to improve the stability of the back and forth sliding of the clamping block 904.

[0036] In this embodiment, the inner wall of the clamping block 904 is in a "<" shape, and a clamping structure is formed between the inner wall of the clamping block 904 and one end of the fixing bolt 13. The "<"-shaped clamping block 904 is used to facilitate its clamping with one end of the fixing bolt 13, thereby preventing the thread of the fixing bolt 13 from loosening.

[0037] Furthermore, a locking structure is formed between the block 12 and the inside of the slot 10, and the cross-section of the slot 10 and the block 12 is cross-shaped. The locking of the cross-shaped block 12 with the inside of the slot 10 improves the firmness and stability of the initial locking installation between the grooving knife 5 and the mounting seat 6.

[0038] In addition, plowshares 7 are fixedly connected to both sides of the frame 4 on one side of the bottom end of the outer retaining plate 3, and the cross-section of the plowshares 7 is arc-shaped. The arc-shaped plowshares 7 can be used to remove the soil that falls into the bottom of the ditch when ditching, and compact the bottom of the ditch to ensure that the bottom of the ditch is flat.

[0039] The working principle and use process of the utility model are as follows: first, the clamping block 12 is clamped into the inside of the clamping slot 10 to realize the preliminary clamping and disassembly between the trenching knife 5 and the mounting seat 6, and then the sliding block 903 is driven to slide in the fixing slot 902 by toggling the clamping block 904 to compress the return spring 901 to a suitable position, and then the fixing bolt 13 is inserted and screwed into the fixing screw hole 11 to realize the firm clamping and fixing of the clamping block 12 and the inside of the clamping slot 10, thereby realizing the disassembly and assembly between the trenching knife 5 and the mounting seat 6, which is convenient for disassembly, maintenance or replacement of the worn trenching knife 5. At the same time, the clamping block 904 is loosened, and the elastic force of the return spring 901 is used to make the sliding block 903 slide and drive the clamping block 904 to return to its original position, and then clamp with one side of the fixing bolt 13 to avoid the fixing bolt 13 accidentally loosening the thread and affecting the firmness and stability of the trenching knife 5 installation, and avoid the fixing bolt 13 loosening the thread due to the working vibration of the milling and throwing disc 8, which affects the trenching operation of the trenching knife 5;

[0040] After that, the support frame assembly 2 is connected and fixed to the external driving device, and then the sliding distance of the inner retaining plate 101 is adjusted according to different soil or the inclination angle of the milling and throwing disc 8 and the ditching depth of the ditching knife 5. At this time, the adjusting bolt 102 is rotated until it is completely disengaged from the inside of the adjusting screw hole 103, and then the inner retaining plate 101 is pulled to slide, and the sliding plate 105 and the sliding groove 106 are used to slide the inner retaining plate 101 to a suitable position, and then the adjusting bolt 102 is rotated in the opposite direction to be tightened to the inside of the suitable adjusting screw hole 103, so as to achieve the limited fixation of the inner retaining plate 101 after sliding, and then the overall width of the inner retaining plate 101 and the outer retaining plate 3 can be changed, so that it can meet the retaining needs in different situations;

[0041] Finally, during the subsequent trenching, the rotation of the milling disc 8 will drive the mounting seat 6 and the trenching knife 5 to rotate, thereby realizing the trenching operation. At the same time, the arc-shaped plow shovel 7 can be used to remove the mud that falls into the bottom of the trench during trenching, and compact the bottom of the trench to ensure that the bottom of the trench is flat, thereby facilitating the trenching operation.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double disc trencher, comprising a frame (4), characterized in that: The top of the frame (4) is fixedly connected to a support frame assembly (2), the two sides of the frame (4) are fixedly connected to outer retaining plates (3), an adjustment component (1) is arranged inside the outer retaining plates (3), the inner wall of the outer retaining plates (3) is rotatably connected to a milling disc (8), the surface of the milling disc (8) is fixedly connected to a mounting seat (6) at an equal angle, one end of the mounting seat (6) is provided with a slot (10), one side of the mounting seat (6) is movably connected to a fixing bolt (13) extending into the slot (10), one end of the mounting seat (6) is movably connected to a trenching knife (5), one end of the trenching knife (5) is fixedly connected to a clamping block (12) extending into the slot (10), one side of the clamping block (12) is provided with a fixing screw hole (11) threadedly matched with the fixing bolt (13), and one side of the mounting seat (6) is provided with an anti-loosening component (9); The adjustment assembly (1) comprises a slide groove (106) which is arranged at equal intervals on the inner wall of the outer retaining plate (3); an adjustment bolt (102) is movably connected to the middle position of one end of the top of the outer retaining plate (3); an inner retaining plate (101) is movably connected inside the outer retaining plate (3); adjustment screw holes (103) threadedly matched with the adjustment bolts (102) are arranged at equal intervals at the middle position of the top of the inner retaining plate (101); and sliding plates (105) are fixedly connected to both sides of the inner retaining plate (101) at equal intervals.

2. A double disc trencher according to claim 1, characterized in that: The upper end of the surface of the adjusting bolt (102) is fixedly connected with an anti-skid convex strip (104) at an equal angle, and the anti-skid convex strip (104) is arc-shaped in a top view.

3. A double disc trencher according to claim 1, characterized in that: A sliding structure is formed between the sliding plate (105) and the interior of the sliding groove (106), and the cross-sections of the sliding plate (105) and the sliding groove (106) are in the shape of an inverted isosceles trapezoid.

4. A double disc trencher according to claim 1, characterized in that: The anti-loosening component (9) comprises a fixing groove (902), the fixing groove (902) is arranged on one side inside the mounting seat (6), and a return spring (901) is fixedly connected to the inner wall of the fixing groove (902), one end of the return spring (901) is fixedly connected to a sliding block (903), and one end of the sliding block (903) is fixedly connected to a clamping block (904) extending to the outside of the mounting seat (6).

5. A double disc trencher according to claim 4, characterized in that: A sliding structure is formed between the sliding block (903) and the interior of the fixing groove (902), and the side view of the fixing groove (902) and the sliding block (903) is convex.

6. A double disc trencher according to claim 4, characterized in that: The inner wall of the clamping block (904) is in a "<" shape, and a clamping structure is formed between the inner wall of the clamping block (904) and one end of the fixing bolt (13).

7. A double disc trencher according to claim 1, characterized in that: A locking structure is formed between the clamping block (12) and the interior of the clamping slot (10), and the cross-sections of the clamping slot (10) and the clamping block (12) are in the shape of a cross.

8. A double disc trencher according to claim 1, characterized in that: A plowshare (7) is fixedly connected to both sides of the frame (4) at one side of the bottom end of the outer retaining plate (3), and the plowshare (7) has an arc-shaped cross section.

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