An adjustable width digging shovel

Abstract

This utility model discloses an adjustable-width digging shovel, including a bucket frame, a shovel head assembly, and a spacing adjustment assembly. The bucket frame includes two side plates and a connecting plate. The shovel head assembly includes a first shovel head and two second shovel heads. The first shovel head is fixed to the connecting plate, and the two second shovel heads are respectively disposed on both sides of the first shovel head. The spacing adjustment assembly includes a connecting sleeve, a bidirectional lead screw, two nut seats, and a rotating part. The connecting sleeve is fixed to the connecting plate, the middle part of the bidirectional lead screw is rotatably connected inside the connecting sleeve, and the two nut seats are symmetrically sleeved on both sides of the bidirectional lead screw and fixed to the two second shovel heads. One end of the bidirectional lead screw extends outside the side plate and connects to the rotating part. This utility model modifies the original shovel head into a first shovel head fixed in the middle and movable second shovel heads located on both sides of the first shovel head. The spacing adjustment assembly adjusts the distance between the two second shovel heads to achieve shovel head width adjustment, thereby facilitating the adjustment of digging spacing to adapt to different planting patterns.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically an adjustable width digging shovel. Background Technology

[0002] With the development of agricultural machinery, the harvesting quality of Chinese medicinal herbs directly affects their medicinal and economic value, especially for rhizomes, where the integrity of the root system and the degree of epidermal damage are key factors in determining the grade of the herbs.

[0003] Harvesting different root and tuber crops (such as astragalus, codonopsis, and salvia miltiorrhiza) requires the use of a digging shovel. Since the planting spacing of different root and tuber crops is often different, the existing digging shovels are usually of fixed width. This fixed width structure makes it difficult to match different planting patterns, resulting in missed digging or damage to adjacent plants, which affects the integrity of the medicinal materials. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable-width digging shovel to solve the problem that existing digging shovels are difficult to adjust their width according to the planting spacing of different root and tuber crops during harvesting operations.

[0005] The technical solution of this utility model is:

[0006] An adjustable-width digging shovel includes a bucket frame, a shovel head assembly, and a spacing adjustment assembly. The bucket frame includes two side plates and a connecting plate fixed between the two side plates. The shovel head assembly includes a first shovel head and two second shovel heads. The first shovel head is fixed to the connecting plate, and the two second shovel heads are respectively disposed on both sides of the first shovel head. The spacing adjustment assembly is used to adjust the horizontal spacing between the two second shovel heads. The spacing adjustment assembly includes a connecting sleeve, a bidirectional lead screw, two nut seats, and a rotating part. The connecting sleeve is fixed to the connecting plate. The bidirectional lead screw is horizontally inserted into the connecting sleeve, and the middle part of the bidirectional lead screw is rotatably connected to the connecting sleeve. The two nut seats are symmetrically sleeved and connected to both sides of the bidirectional lead screw. The two second shovel heads are respectively fixedly connected to the two nut seats. One end of the bidirectional lead screw extends outside the side plate and is connected to the rotating part.

[0007] Preferably, as a further improvement of this utility model, the connecting plate includes an arc-shaped plate and a bottom straight plate. The arc-shaped plate is fixed between the two side plates. One end of the bottom straight plate is fixed to the lower end of the arc-shaped plate. The two side walls of the bottom straight plate are correspondingly fixed to the two side plates. One end of the first shovel head is fixed to the arc surface of the arc-shaped plate. The connecting sleeve is fixed to the top of the bottom straight plate. The bottoms of the two nut seats are slidably connected to the top of the bottom straight plate.

[0008] Preferably, as a further improvement of this utility model, the top of the bottom plate is provided with a guide groove arranged along its length, and both nut seats are slidably connected in the guide groove.

[0009] Preferably, as a further improvement of this utility model, the second shovel head includes multiple shovel blades and a shovel blade mounting plate, the shovel blade mounting plate being fixed to the side wall of the nut seat, and the multiple shovel blades being fixed side by side on the shovel blade mounting plate.

[0010] Preferably, as a further improvement of this utility model, the rotating part is a rocker arm or a handwheel.

[0011] Preferably, as a further improvement of this utility model, a first locking mechanism is provided between the bidirectional lead screw and the connecting sleeve. The first locking mechanism is used to prevent the bidirectional lead screw from rotating when the digging shovel is working. The first locking mechanism includes a first positioning bolt and a first positioning screw hole opened on the connecting sleeve. The first positioning bolt is threaded into the first positioning screw hole.

[0012] Preferably, as a further improvement of this utility model, a second locking mechanism is provided between the bidirectional lead screw and the nut seat. The second locking mechanism is used to prevent the nut seat and the bidirectional lead screw from moving relative to each other when the digging shovel is working. The second locking mechanism includes a plurality of second positioning screw holes, a positioning insertion hole, and a second positioning bolt. The plurality of second positioning screw holes are opened on the outer wall of the nut seat and are evenly distributed along the length direction of the nut seat. The positioning insertion hole is opened on the bidirectional lead screw. When the positioning insertion hole is aligned with a certain second positioning screw hole, the second positioning bolt is screwed into the second positioning screw hole and inserted into the positioning insertion hole for locking.

[0013] Preferably, as a further improvement of this utility model, the rotating part is a motor with a self-locking function, the motor is mounted and fixed on the outer wall of one of the side plates by a mounting bracket, and the output shaft of the motor is connected to the end of the bidirectional lead screw.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The traditional shovel head is now designed as a three-section shovel head. The shovel head consists of a fixed first shovel head in the middle and movable second shovel heads on both sides of the first shovel head. The spacing adjustment component can use the rotating part to drive the bidirectional screw to convert the rotational motion into linear motion, thereby driving the two second shovel heads to move closer or further apart in the horizontal direction to adjust the overall amplitude of the shovel head. This makes it easier to adjust the digging spacing to adapt to different planting patterns. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of an adjustable width digging shovel according to the present invention.

[0017] Figure 2 This is a schematic diagram of the bidirectional lead screw connection position in an adjustable width excavator shovel according to this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the vibration component in an adjustable width digging shovel according to the present invention. Detailed Implementation

[0019] The following is combined Figures 1-3 The specific embodiments of this utility model will be described in detail below. In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of a utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] Example

[0022] like Figures 1-2 As shown, this utility model embodiment provides an adjustable width digging shovel, including a bucket frame 1, a shovel head assembly, and a spacing adjustment assembly. The bucket frame 1 includes two side plates 11 and a connecting plate fixed between the two side plates 11. The shovel head assembly includes a first shovel head 21 and two second shovel heads 22. The first shovel head 21 is fixed on the connecting plate, and the two second shovel heads 22 are respectively disposed on both sides of the first shovel head 21. The spacing adjustment assembly is used to adjust the horizontal spacing between the two second shovel heads 22. The spacing adjustment assembly includes a connecting sleeve 31, a bidirectional lead screw 32, two nut seats 33, and a rotating part 34. The connecting sleeve 31 is fixed on the connecting plate. The bidirectional lead screw 32 is horizontally inserted into the connecting sleeve 31, and the middle part of the bidirectional lead screw 32 is rotatably connected to the connecting sleeve 31. The two nut seats 33 are symmetrically sleeved and connected to both sides of the bidirectional lead screw 32. The two second shovel heads 22 are respectively fixedly connected to the two nut seats 33. One end of the bidirectional lead screw 32 extends to the outside of the side plate 11 and is connected to the rotating part 34.

[0023] In this embodiment, when it is necessary to excavate Chinese medicinal herbs of different widths and to extend or retract the horizontal width of the shovel head, the rotating part 34 is rotated to drive the bidirectional screw 32 to rotate. Since the two nut seats 33 are symmetrically sleeved and connected to both sides of the bidirectional screw 32, when the bidirectional screw 32 rotates, the helical motion is converted into horizontal linear movement, thereby causing the two nut seats 33 to move closer or further away from each other. During the process of the two nut seats 33 moving closer or further away from each other, the two second shovel heads 22 will move accordingly, so as to adjust the overall width of the shovel head according to the excavation needs, so that the shovel has the advantage of flexible adjustment and can adapt to different excavation scenarios.

[0024] The connecting plate includes an arc-shaped plate 12 and a bottom straight plate 13. The arc-shaped plate 12 is fixed between two side plates 11. One end of the bottom straight plate 13 is fixed to the lower end of the arc-shaped plate 12. The two side walls of the bottom straight plate 13 are correspondingly fixed to the two side plates 11. One end of the first shovel head 21 is fixed to the arc surface of the arc-shaped plate 12. The connecting sleeve 31 is fixed to the top of the bottom straight plate 13. The bottoms of the two nut seats 33 are slidably connected to the top of the bottom straight plate 13.

[0025] Furthermore, in order to facilitate guidance and positioning, a guide groove 131 is provided on the top of the bottom plate 13 along its length direction, and both nut seats 33 are slidably connected in the guide groove 131.

[0026] Specifically, the second shovel head 22 includes multiple shovel blades and a shovel blade mounting plate. The shovel blade mounting plate is fixed to the side wall of the nut seat 33. Multiple shovel blades are fixed side by side on the shovel blade mounting plate. The above arrangement can facilitate the increase of digging efficiency. In specific implementation, the second shovel head 22 uses three shovel blades for digging.

[0027] In one optional embodiment of the rotating part 34, the rotating part 34 in this embodiment is a rocker arm or a handwheel, which facilitates rotation.

[0028] In the above embodiment, considering that the head of the digging shovel is in a vibrating digging process when digging, in order to prevent the bidirectional lead screw 32 from rotating relative to the connecting sleeve 31 due to vibration, a first locking mechanism is provided between the bidirectional lead screw 32 and the connecting sleeve 31. The first locking mechanism is used to prevent the bidirectional lead screw 32 from rotating when the digging shovel is working. The first locking mechanism includes a first positioning bolt and a first positioning screw hole 311 opened on the connecting sleeve 31. The first positioning bolt is threaded into the first positioning screw hole 311.

[0029] In the above embodiment, a second locking mechanism is provided between the bidirectional lead screw 32 and the nut seat 33. The second locking mechanism is used to prevent the nut seat 33 and the bidirectional lead screw 32 from moving relative to each other when the digging shovel is working. The second locking mechanism includes a plurality of second positioning screw holes 331, a positioning insertion hole and a second positioning bolt. The plurality of second positioning screw holes 331 are opened on the outer wall of the nut seat 33 and are evenly distributed along the length direction of the nut seat 33. The positioning insertion hole is opened on the bidirectional lead screw 32. When the positioning insertion hole is aligned with a certain second positioning screw hole 331, the second positioning bolt is screwed into the second positioning screw hole 331 and inserted into the positioning insertion hole for locking.

[0030] As another optional embodiment of the rotating part 34, in this embodiment, the rotating part 34 is a motor with a self-locking function (not shown in the figure). The motor is mounted and fixed on the outer wall of one of the side plates 11 by a mounting bracket. The output shaft of the motor is connected to the end of the bidirectional lead screw 32. The motor is set to automatically drive the bidirectional lead screw 32 to rotate and lock, thereby realizing the process of automatically adjusting the width of the shovel head.

[0031] In another embodiment of this utility model, in order to enable the shovel head to dig using vibration during the digging process, a vibration assembly for driving the shovel head to vibrate is also provided, such as... Figure 3 As shown, the vibration assembly includes a movable rod 41, an eccentric shaft 42, a power shaft 43, an eccentric wheel 44, a transmission pulley 45, and a connecting rod 46. The movable rod 41 is hinged to the top of the two side plates 11. An eccentric shaft 42 is located above the movable rod 41. Both ends of the power shaft 43 are supported on the frame by bearings. A transmission pulley 45 is connected to the power shaft 43, which drives the power shaft 43 to rotate. Eccentric wheels 44 are located on both sides of the power shaft 43. The two eccentric wheels 44 are coaxial with the power shaft 43 and are fixedly connected by a key. The eccentric shaft 42 and the eccentric wheels 44 are eccentrically connected and fixed by a key. The transmission pulley 45 and the power shaft 43 are concentrically connected and fixed by a key. The upper part of the connecting rod 46 is sleeved on the eccentric shaft 42 through a hole, and the connection with the eccentric shaft 42 is clearance-fitted. The other end of the connecting rod 46 is fixedly connected to the movable rod 41.

[0032] The vibration components installed can vibrate the shovel head during excavation. The vibration promotes the natural separation of the soil from the medicinal roots and stems, ensuring a high harvest integrity rate. The vibration principle is as follows: the drive shaft 43 is driven to rotate by the transmission pulley 45. The rotation of the drive shaft 43 drives the eccentric wheel 44 to rotate together. The two eccentric wheels 44 and the drive shaft 43 are interference fit. The eccentric wheels 44 are supported on the frame by bearings. The lower part of the connecting rod 46 is connected to the movable rod 41 located above and behind the side plate 11. The upper end of the connecting rod 46 has a hole that directly fits onto the eccentric shaft 42. The clearance fit allows relative rotation between the connecting rod 46 and the eccentric shaft 42. The excitation caused by the rotation of the eccentric wheel 44 is transmitted to the movable rod 41 and the excavating shovel through the connecting rod 46 to vibrate.

[0033] The above-disclosed embodiments are merely preferred embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An adjustable width digging shovel, characterized in that, include: The bucket frame (1) includes two side plates (11) and a connecting plate fixed between the two side plates (11); The shovel head assembly includes a first shovel head (21) and two second shovel heads (22). The first shovel head (21) is fixed on the connecting plate, and the two second shovel heads (22) are respectively disposed on both sides of the first shovel head (21). A spacing adjustment assembly is used to adjust the horizontal spacing between two second shovel heads (22). The spacing adjustment assembly includes a connecting sleeve (31), a bidirectional lead screw (32), two nut seats (33), and a rotating part (34). The connecting sleeve (31) is fixed on the connecting plate. The bidirectional lead screw (32) is horizontally inserted into the connecting sleeve (31), and the middle part of the bidirectional lead screw (32) is rotatably connected to the connecting sleeve (31). The two nut seats (33) are symmetrically sleeved and connected to both sides of the bidirectional lead screw (32). The two second shovel heads (22) are respectively fixedly connected to the two nut seats (33). One end of the bidirectional lead screw (32) extends to the outside of the side plate (11) and is connected to the rotating part (34).

2. The adjustable width digging shovel according to claim 1, characterized in that, The connecting plate includes an arc plate (12) and a bottom straight plate (13). The arc plate (12) is fixed between the two side plates (11). One end of the bottom straight plate (13) is fixed to the lower end of the arc plate (12). The two side walls of the bottom straight plate (13) are fixed to the two side plates (11). One end of the first shovel head (21) is fixed to the arc surface of the arc plate (12). The connecting sleeve (31) is fixed to the top of the bottom straight plate (13). The bottom of the two nut seats (33) is slidably connected to the top of the bottom straight plate (13).

3. The adjustable width digging shovel according to claim 2, characterized in that, The top of the bottom plate (13) is provided with a guide groove (131) arranged along its length direction, and the two nut seats (33) are slidably connected in the guide groove (131).

4. The adjustable width digging shovel according to claim 1, characterized in that, The second shovel head (22) includes multiple shovel blades and a shovel blade mounting plate. The shovel blade mounting plate is fixed to the side wall of the nut seat (33), and the multiple shovel blades are fixed side by side on the shovel blade mounting plate.

5. The adjustable width digging shovel according to claim 1, characterized in that, The rotating part (34) is a rocker arm or a handwheel.

6. The adjustable width digging shovel according to claim 5, characterized in that, A first locking mechanism is provided between the bidirectional lead screw (32) and the connecting sleeve (31). The first locking mechanism is used to prevent the bidirectional lead screw (32) from rotating when the digging shovel is working. The first locking mechanism includes a first positioning bolt and a first positioning screw hole (311) opened on the connecting sleeve (31). The first positioning bolt is threaded into the first positioning screw hole (311).

7. The adjustable width digging shovel according to claim 6, characterized in that, A second locking mechanism is provided between the bidirectional lead screw (32) and the nut seat (33). The second locking mechanism is used to prevent the nut seat (33) and the bidirectional lead screw (32) from moving relative to each other when the digging shovel is working. The second locking mechanism includes multiple second positioning screw holes (331), positioning insertion holes and second positioning bolts. Multiple second positioning screw holes (331) are opened on the outer wall of the nut seat (33) and are evenly distributed along the length direction of the nut seat (33). The positioning insertion hole is opened on the bidirectional lead screw (32). When the positioning insertion hole is aligned with a certain second positioning screw hole (331), the second positioning bolt is screwed into the second positioning screw hole (331) and inserted into the positioning insertion hole for locking.

8. The adjustable width digging shovel according to claim 1, characterized in that, The rotating part (34) is a motor with a self-locking function. The motor is mounted and fixed on the outer wall of one of the side plates (11) by a mounting bracket. The output shaft of the motor is connected to the end of the bidirectional lead screw (32).

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