Blade group with guide structure at tail part of blade

Abstract

The utility model discloses a blade group with a guide structure at the tail part of a blade, which comprises a first blade (1), a second blade (2), a pressing strip (3) and a plurality of groups of bolt locking devices (4), the tail end of the first blade (1) is provided with a first driving circular ring (6), and the tail end of the second blade (2) is provided with a second driving circular ring (7); the device is characterized in that a first guide structure is arranged at the tail end of the first driving circular ring (6), and a second guide structure is arranged at the tail end of the second driving circular ring (7); in the sliding process state of the first blade (1) and the second blade (2), the first driving circular ring (6) and the first guide structure are inevitably partially overlapped and contacted with the second driving circular ring (7) and the second guide structure. Guide structures are additionally arranged at the tail ends of the first blade and the second blade of the blade group, so that the first blade and the second blade are always overlapped up and down during reciprocating motion and have a guide function during sliding.

Description

Technical Field

[0001] The utility model relates to the technical field of gardening equipment, in particular to a blade set with a guide structure at the tail of the blade. Background Art

[0002] The applicant previously applied for a pruning machine blade set with a guide mechanism, with a publication number of CN205694503U, which includes a layering strip, a first blade, a second blade and a plurality of bolts. The first blade and the second blade are both provided with a plurality of long holes. The first blade is provided with a row of cutter heads, a cavity is provided between the two adjacent cutter heads, and a guide mechanism is provided at the end of the cutter head. The guide mechanism is a circular protrusion. One end of the circular protrusion in the direction of the free end of the first blade protrudes from the edge of the cutter head. The protruding end of the circular protrusion is connected to the edge of the cutter head by an inward concave arc. Although the blade set of the above structure is also provided with a guide mechanism, the guide mechanism is used to guide the uncut branches for a second pruning. At present, when the first blade and the second blade slide back and forth, the tail of the first blade and the tail of the second blade will separate at the left and right extreme positions. Once separated and slid and overlapped again, the blades will lose support, which may cause the friction between the two to increase instantly, increasing the load of the motor; there is also a possibility of scratches. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a blade group with a guide structure at the tail end of a first blade and a second blade so that the two blades always overlap each other when reciprocating and have a guide structure at the tail end of the blades when sliding.

[0004] The technical solution of the utility model is to provide a blade group with a guide structure at the tail of the blade having the following structure, including a first blade, a second blade, a pressure strip and multiple groups of bolt locking devices, the first blade, the second blade and the pressure strip are stacked up and down, the first blade and the second blade slide back and forth linearly on the pressure strip, both sides of the first blade and the second blade are provided with extended blade heads, the bodies of the first blade and the second blade are provided with long holes distributed at intervals along the length direction, each group of bolt locking devices passes through the long holes of the first blade and the second blade and is locked on the pressure strip; the tail end of the first blade is provided with a first driving ring, and the tail end of the second blade is provided with a second driving ring; it is characterized in that: the first driving ring A first guide structure is provided at the tail end of the second driving ring, and a second guide structure is provided at the tail end of the second driving ring; when the first blade is located at the position of the blade group closest to the pruning machine body and the second blade is located at the position farthest from the pruning machine body, the second guide structure of the second driving ring overlaps and contacts with the first driving ring up and down; when the first blade is located at the position of the blade group farthest from the pruning machine body and the second blade is located closest to the pruning machine body, the first guide structure of the first driving ring overlaps and contacts with the second driving ring up and down, and in the sliding process state of the first blade and the second blade, a part of the first driving ring and the first guide structure must overlap and contact with the second driving ring and the second guide structure up and down.

[0005] The first guide structure is a first protrusion extending from the tail end of the first driving ring, and the second guide structure is a second protrusion extending from the tail end of the first driving ring.

[0006] When the first blade is located at the position closest to the pruning machine body and the second blade is located at the position farthest from the pruning machine body, the second guide structure of the second drive ring overlaps and contacts the first drive ring up and down, which means that the top surface of the second protrusion overlaps and contacts the bottom surface of the first drive ring up and down.

[0007] When the first blade is located at the position farthest from the pruning machine body and the second blade is located at the position closest to the pruning machine body, the first guide structure of the first drive ring overlaps and contacts the second drive ring up and down, which means that the bottom surface of the first protrusion overlaps and contacts the top surface of the second drive ring up and down.

[0008] The bolt locking device includes a bolt, a bushing and a locking nut. An annular protrusion is provided at one end of the bushing. The bushing passes through the long holes of the first blade and the second blade and the annular protrusion is located outside the long hole. The other end of the bushing is against the top surface of the pressure strip. The bolt passes through the bushing and is tightened and fixed with the locking nut located at the bottom of the pressure strip.

[0009] The distance between the annular protrusion and the pressure strip is greater than the sum of the thicknesses of the first blade and the second blade.

[0010] The pressure strip is in the form of a channel steel structure, and the locking nut is located inside the channel steel.

[0011] After adopting the above structure, the utility model has the following advantages: 1. Since the tail end of the first drive ring is provided with a first guide structure, and the tail end of the second drive ring is provided with a second guide structure; when the first blade is located at the position of the blade group closest to the pruning machine body and the second blade is located at the position farthest from the pruning machine body, the second guide structure of the second drive ring overlaps and contacts with the first drive ring; when the first blade is located at the position of the blade group farthest from the pruning machine body and the second blade is located at the position closest to the pruning machine body, the first guide structure of the first drive ring overlaps and contacts with the second drive ring, and when the first blade and the second blade are in the sliding process, the first drive ring overlaps and contacts with the second drive ring; that is, the first blade and the second blade are added with a guide structure at the tail end, so that the two always overlap up and down when reciprocating, and have a guide when sliding, which can increase the support effect of the tail of the blade, have a directionality when sliding, avoid the sudden increase of friction between the two, and effectively protect the normal load of the motor. 2. The tail of the blade is prevented from deformation by the first guide structure and the second guide structure, and the two are prevented from scratching each other, which plays a role in protecting the blade.

[0012] As an improvement, the first guide structure is a first protrusion extending from the tail end of the first drive ring, and the second guide structure is a second protrusion extending from the tail end of the first drive second drive ring. The protrusion structure can be integrally formed when processing the blade, which is convenient for processing and has good reliability.

[0013] As an improvement, when the first blade is located at the position closest to the pruning machine body and the second blade is located at the position farthest from the pruning machine body, the second guide structure of the second drive ring overlaps and contacts the first drive ring up and down, which means that the top surface of the second protrusion overlaps and contacts the bottom surface of the first drive ring up and down, and the structure is simple.

[0014] As an improvement, when the first blade is located at the position farthest from the pruning machine body of the blade group and the second blade is located at the position closest to the pruning machine body, the first guide structure of the first drive ring overlaps and contacts the second drive ring up and down, which means that the bottom surface of the first protrusion overlaps and contacts the top surface of the second drive ring up and down, and the structure is simple.

[0015] As an improvement, the bolt locking device includes a bolt, a bushing and a locking nut. An annular protrusion is provided at one end of the bushing. The bushing passes through the long holes of the first blade and the second blade and the annular protrusion is located outside the long hole. The other end of the bushing is abutted against the top surface of the pressure strip. The bolt passes through the bushing and is tightened and fixed with the locking nut located at the bottom of the pressure strip. While locking and fixing, the spacing can also be directly determined to make the structure compact.

[0016] As an improvement, the distance between the annular protrusion and the pressure strip is greater than the sum of the thicknesses of the first blade and the second blade, thereby determining a clearance for the blades to slide.

[0017] As an improvement, the pressure strip is of a channel steel structure, and the locking nut is located inside the channel steel, which can effectively protect the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a split schematic diagram of a blade assembly with a guide structure at the blade tail.

[0019] Figure 2 It is a schematic diagram of a state of a blade assembly with a guide structure at the tail of the blade of the utility model.

[0020] Figure 3 for Figure 2 A magnified diagram of the tail.

[0021] Figure 4 This is a schematic diagram of another state of a blade assembly with a guide structure at the blade tail of the utility model.

[0022] Figure 5 for Figure 4 A magnified diagram of the tail.

[0023] Figure 6 Schematic diagram of the explosion of the bolt locking device.

[0024] Figure 7 It is a three-dimensional schematic diagram of a bolt locking device.

[0025] As shown in the figure,

[0026] 1. First blade, 2. Second blade, 3. Pressure strip, 4. Bolt locking device, 5. Long hole, 6. First driving ring, 7. Second driving ring, 8. First protrusion, 9. Second protrusion, 10. Bolt, 11. Bushing, 12. Locking nut, 13. Pressure strip. DETAILED DESCRIPTION

[0027] The utility model will be further described below in conjunction with the accompanying drawings.

[0028] like Figure 1-7As shown, a blade set with a guide structure at the tail of the blade of the utility model includes a first blade 1, a second blade 2, a pressure strip 3 and multiple groups of bolt locking devices 4, the first blade 1, the second blade 2 and the pressure strip 3 are stacked on top of each other, and the first blade 1 and the second blade 2 slide back and forth on the pressure strip 3 in a straight line.

[0029] Both sides of the first blade 1 and the second blade 2 are provided with protruding blade heads, and the bodies of the first blade 1 and the second blade 2 are provided with long holes 5 distributed at intervals along the length direction. Each set of bolt locking devices passes through the long holes of the first blade 1 and the second blade 2 and is locked on the pressure strip 3.

[0030] A first driving ring 6 is disposed at the tail end of the first blade 1, and a second driving ring 7 is disposed at the tail end of the second blade 2. The first driving ring 6 and the second driving ring 7 are connected to a gear assembly of a driving structure.

[0031] The tail end of the first driving ring 6 is provided with a first guide structure, and the tail end of the second driving ring 7 is provided with a second guide structure; in this embodiment: the first guide structure is a first convex block 8 extending from the tail end of the first driving ring 6, and the second guide structure is a second convex block 9 extending from the tail end of the first driving ring 6 and the second driving ring 7. The first convex block 8 and the second convex block 9 are trapezoidal, and the long sides are connected to the ring body as a whole.

[0032] like Figure 2 and Figure 3 As shown, when the first blade 1 is located at the position of the blade group closest to the pruning machine body and the second blade 2 is located at the position farthest from the pruning machine body, the second guide structure of the second drive ring 7 overlaps and contacts the first drive ring 6 up and down; that is, the first blade 1 is located at the leftmost position. Specifically, when the first blade 1 is located at the position of the blade group closest to the pruning machine body and the second blade 2 is located at the position farthest from the pruning machine body, the second guide structure of the second drive ring 7 overlaps and contacts the first drive ring 6 up and down, which means that the top surface of the second protrusion 9 overlaps and contacts the bottom surface of the first drive ring 6 up and down.

[0033] like Figure 4 and Figure 5As shown, when the first blade 1 is located at the position farthest from the pruning machine body by the blade group and the second blade 2 is located at the position closest to the pruning machine body, the first guide structure of the first drive ring 6 overlaps and contacts the second drive ring 7 up and down; that is, the first blade 1 is located at the rightmost position. Specifically, when the first blade 1 is located at the position farthest from the pruning machine body by the blade group and the second blade 2 is located at the position closest to the pruning machine body, the first guide structure of the first drive ring 6 overlaps and contacts the second drive ring 7 up and down, which means that the bottom surface of the first protrusion 8 overlaps and contacts the top surface of the second drive ring 7 up and down.

[0034] When the first blade 1 and the second blade 2 are sliding, the first drive ring 6 and the first guide structure and the second drive ring 7 and the second guide structure must overlap and contact each other; that is, when the first blade 1 and the second blade 2 are working, when they slide to any position, the tail ends of the blades must overlap each other.

[0035] like Figure 6 and Figure 7 As shown, the bolt locking device 4 includes a bolt 10, a bushing 11 and a locking nut 12. One end of the bushing 11 is provided with an annular protrusion. The bushing 11 passes through the long hole 5 of the first blade 1 and the second blade 2 and the annular protrusion is located outside the long hole 5. The other end of the bushing 11 is against the top surface of the pressure strip 3. The bolt 10 passes through the bushing 11 and is tightened and fixed with the locking nut 12 located at the bottom of the pressure strip 3.

[0036] The distance between the annular protrusion and the pressure strip 3 is greater than the sum of the thicknesses of the first blade 1 and the second blade 2 , thereby ensuring a sliding gap between the first blade 1 and the second blade 2 .

[0037] The pressure strip 3 is a channel steel structure, including a top plate and two side plates, and the locking nut 12 is located inside the channel steel and between the two side plates.

Claims

1. A blade set with a guide structure at the tail of the blade, comprising a first blade (1), a second blade (2), a pressure strip (3) and a plurality of bolt locking devices (4), wherein the first blade (1), the second blade (2) and the pressure strip (3) are stacked one above the other, the first blade (1) and the second blade (2) slide back and forth linearly on the pressure strip (3), both sides of the first blade (1) and the second blade (2) are provided with protruding blade heads, the bodies of the first blade (1) and the second blade (2) are provided with long holes (5) distributed at intervals along the length direction, each group of bolt locking devices (4) passes through the long holes (5) of the first blade (1) and the second blade (2) and is locked on the pressure strip (3); the tail end of the first blade (1) is provided with a first driving ring (6), and the tail end of the second blade (2) is provided with a second driving ring (7); characterized in that: The tail end of the first driving ring (6) is provided with a first guide structure, and the tail end of the second driving ring (7) is provided with a second guide structure; When the first blade (1) is located at a position of the blade assembly closest to the pruning machine body and the second blade (2) is located at a position farthest from the pruning machine body, the second guide structure of the second driving ring (7) overlaps and contacts the first driving ring (6) from top to bottom; When the first blade (1) is located at a position of the blade assembly farthest from the pruning machine body and the second blade (2) is located closest to the pruning machine body, the first guide structure of the first driving ring (6) and the second driving ring (7) overlap and contact each other vertically; When the first blade (1) and the second blade (2) are in the sliding process, the first drive ring (6) and the first guide structure and the second drive ring (7) and the second guide structure must have a part that overlaps and contacts each other.

2. The blade assembly with a guide structure at the blade tail according to claim 1, characterized in that: The first guide structure is a first protrusion (8) extending from the tail end of the first drive ring (6), and the second guide structure is a second protrusion (9) extending from the tail end of the first drive ring (7).

3. The blade assembly with a guide structure at the blade tail according to claim 2, characterized in that: When the first blade (1) is located at the position of the blade assembly closest to the pruning machine body and the second blade (2) is located at the position farthest from the pruning machine body, the second guide structure of the second driving ring (7) overlaps and contacts the first driving ring (6) in an up-and-down manner, which means that the top surface of the second protrusion (9) overlaps and contacts the bottom surface of the first driving ring (6) in an up-and-down manner.

4. The blade assembly with a guide structure at the blade tail according to claim 2, characterized in that: When the first blade (1) is located at the position of the blade assembly farthest from the pruning machine body and the second blade (2) is located at the position closest to the pruning machine body, the first guide structure of the first driving ring (6) overlaps and contacts the second driving ring (7) in vertical direction, which means that the bottom surface of the first protrusion (8) overlaps and contacts the top surface of the second driving ring (7) in vertical direction.

5. The blade assembly with a guide structure at the blade tail according to claim 1, characterized in that: The bolt locking device (4) comprises a bolt (10), a bushing (11) and a locking nut (12); one end of the bushing (11) is provided with an annular protrusion; the bushing (11) passes through the long holes (5) of the first blade (1) and the second blade (2) and the annular protrusion is located outside the long holes (5); the other end of the bushing (11) abuts against the top surface of the pressure strip (3); the bolt (10) passes through the bushing (11) and is tightened and fixed with the locking nut (12) located at the bottom of the pressure strip (3).

6. The blade assembly with a guide structure at the blade tail according to claim 5, characterized in that: The distance between the annular protrusion and the pressure strip (3) is greater than the sum of the thicknesses of the first blade (1) and the second blade (2).

7. The blade assembly with a guide structure at the blade tail according to claim 5, characterized in that: The pressure strip is in the form of a channel steel structure, and the locking nut (12) is located inside the channel steel.

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