CN113068522B - Cutting device with adjustable moving blade interval - Google Patents

Abstract

The invention discloses a cutting device with adjustable moving blade spacing, which comprises a rack, wherein a driving shaft is rotatably arranged on the rack, a plurality of circular plates are arranged on the driving shaft, a sleeve is rotatably sleeved on the outer side of each circular plate, a moving blade is arranged outside the sleeve, a connecting groove is formed in the inner side of the sleeve, a groove is formed in the eccentric position of each circular plate, a driven shaft penetrates through the groove, a telescopic connecting structure is arranged on the driven shaft corresponding to each sleeve, each telescopic connecting structure comprises a telescopic connecting key used for connecting or separating the driven shaft and the sleeve, the telescopic connecting keys are matched with the connecting grooves, and the number and/or the telescopic direction of the telescopic connecting keys in a plurality of telescopic connecting structures are different. The cutting device does not need to disassemble and assemble the cutter when adjusting the distance between the movable cutters, is convenient to operate and can improve the working efficiency.

Description

Cutting device with adjustable moving blade interval

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a cutting device with adjustable movable blade spacing.

Background

In the existing crop cutting device, the movable cutter is usually directly fixed on the main shaft, when the cutting clearance of the movable cutter needs to be adjusted, the cutting device needs to be stopped, and then partial cutters are dismounted and mounted manually, so that the adjustment of the cutting clearance of the movable cutter is realized. This kind of mode needs the manual work to dismantle the cutter when adjusting the cutting clearance, influences work efficiency, can't cut the processing fast to the crops that have different cutting length demands.

Disclosure of Invention

The invention mainly aims to provide a cutting device with adjustable movable blade spacing, which can conveniently adjust the cutting clearance of a movable blade, does not need to manually disassemble a cutter when adjusting the cutting clearance and is beneficial to improving the working efficiency.

In order to achieve the purpose, the invention provides a cutting device with adjustable moving blade spacing, which comprises a rack, wherein a driving shaft is rotatably arranged on the rack, a plurality of circular plates are arranged on the driving shaft, a sleeve is rotatably sleeved on the outer side of each circular plate, a moving blade is arranged outside the sleeve, a connecting groove is formed in the inner side of the sleeve, a groove is formed in the eccentric position of each circular plate, a driven shaft penetrates through the groove, a telescopic connecting structure is arranged on the driven shaft corresponding to each sleeve, the telescopic connecting structure comprises a telescopic connecting key used for connecting or separating the driven shaft and the sleeve, the telescopic connecting key is matched with the connecting groove, and the number and/or the telescopic direction of the telescopic connecting keys in the telescopic connecting structures are different.

Furthermore, the telescopic connecting structure comprises a circular ring, a connecting key mounting groove is formed in the circular ring along the radial direction of the driven shaft, and the telescopic connecting key is telescopically mounted in the connecting key mounting groove; the driven shaft is provided with a telescopic driving mechanism which is used for driving the telescopic connecting key to stretch in the connecting key mounting groove so as to enable the telescopic connecting key to stretch into or stretch out of the connecting groove.

Furthermore, a plurality of grooves are formed in the circular plate along the circumferential direction, and a driven shaft can be rotatably arranged in each groove in a penetrating mode; on different driven shafts, the number and/or the telescopic direction of telescopic connecting keys in the telescopic connecting structure at the same position are different.

Furthermore, a pull rod mounting groove is formed in the driven shaft along the axial direction, the telescopic driving mechanism comprises a pull rod mounted in the pull rod mounting groove, a connecting rod is hinged to the pull rod, and the other end of the connecting rod is hinged to the telescopic connecting key.

The gear shifting mechanism comprises a gear shifting handle, an outer cam and a large gear are mounted on the gear shifting handle, a small gear is mounted at the end of a driven shaft and meshed with the large gear, an inner concave wheel is connected to the end of a pull rod, and the inner concave wheel is matched with the outer cam.

Furthermore, the groove is an open groove, the groove is communicated with the outside of the circular plate, and a hoop used for fixing the driven shaft in the groove is hinged to the circular plate at the groove.

Furthermore, a cutter clamping mechanism for fixing the non-rotating movable cutter is arranged above the sleeve on the rack, the cutter clamping mechanism comprises a cutter clamping shaft which is rotatably arranged on the rack, a plurality of top tooth sleeves are arranged on the cutter clamping shaft corresponding to the movable cutters on the plurality of sleeves, two fixed rods are arranged below the cutter clamping shaft on the rack, and a plurality of cutter clamping blocks are arranged between the two fixed rods; the plurality of cutter clamping blocks are correspondingly arranged below the plurality of top tooth sleeves one by one and are correspondingly arranged above the plurality of movable cutters one by one; two sides of the cutter clamping block are respectively arranged on the two fixed rods through a spring.

Furthermore, a fixed cutter assembly is further mounted on the rack, the fixed cutter assembly is a fixed integral fixed cutter plate mounted on the rack, and a plurality of gaps for the moving cutter to pass through are formed in the fixed integral fixed cutter plate.

Furthermore, still install certain cutter unit in the frame, fixed cutter unit is adjustable stationary knife, and adjustable stationary knife includes that one installs the fixed sword installation axle in the frame, and the epaxial interval of fixed sword installation installs polylith stationary blade, and the stationary blade passes through torsion spring and rotationally installs on the fixed sword installation axle, still is equipped with a stationary knife adjusting device that makes the stationary blade wind fixed sword installation axle pivoted in the frame.

Furthermore, the tip of stationary blade is equipped with a quarter butt of perk, and stationary knife adjusting device includes a pivot of rotationally installing in the frame, installs a plurality of regulation tooth covers corresponding to polylith stationary blade in the pivot, adjusts to be equipped with on the tooth cover with quarter butt matched with regulation apical tooth, and the quantity of the regulation apical tooth on a plurality of regulation tooth covers and/or the direction of stretching out is inequality.

By applying the technical scheme of the invention, the circular plates are arranged on the driving shaft, the driven shaft penetrates through the circular plates, the outer side of each circular plate is correspondingly and rotatably sleeved with a sleeve, the inner side of each sleeve is provided with a connecting groove, and the driven shaft is provided with a telescopic connecting structure, so that the telescopic connecting keys are telescopically connected with the connecting grooves; when the telescopic connecting key extends into the connecting groove, the driven shaft can be connected with the sleeve, the driven shaft is driven to rotate through the rotation of the driving shaft, and then the sleeve and the movable cutter are driven to rotate through the telescopic connecting key to cut crops; when the telescopic connecting key retracts, a neutral gear state is formed, power is cut off, and the sleeve and the movable knife do not rotate; through setting up the quantity and/or the flexible direction of flexible connection key in a plurality of flexible connection structure into inequality, when the interval that moves the sword is adjusted to needs, only need rotate the driven shaft, change with the corresponding flexible connection key's of spread groove on the sleeve quantity, can make specific sleeve rotate, and other sleeves do not rotate, realize carrying out the interval adjustment of the sword that cuts. The cutting device does not need to disassemble and assemble the cutter when adjusting the distance between the movable cutters, is convenient to operate and can improve the working efficiency.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a perspective view of a cutting device (sleeve not shown) according to an embodiment of the present invention.

Fig. 2 is a left side schematic view of the cutting device of the embodiment of the present invention (the shift mechanism is not shown).

Fig. 3 is a schematic structural diagram of a driving shaft and a circular plate in the cutting device according to the embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a circular plate in the cutting device according to the embodiment of the present invention.

Fig. 5 is a schematic structural view of a driven shaft and a circular ring in the cutting device according to the embodiment of the invention.

Fig. 6 is a partially enlarged view of a portion a in fig. 5.

Fig. 7 is a schematic structural diagram of a ring in the cutting device according to the embodiment of the invention.

Fig. 8 is a schematic structural diagram of the cutting device according to the embodiment of the present invention, in which the movable knife, the sleeve, the driving shaft, and the driven shaft are combined.

Fig. 9 is a left side view of fig. 8.

Fig. 10 is a schematic view of the internal structure of the cutting device according to the embodiment of the present invention when the sleeve, the driving shaft, and the driven shaft are combined.

Fig. 11 is a partial enlarged view of fig. 10 at B.

Fig. 12 is a schematic structural view of a cutting apparatus according to an embodiment of the present invention, in which a shift mechanism, a drive shaft, a driven shaft, and a sleeve are combined.

Fig. 13 is a left side view of fig. 12.

Fig. 14 is a schematic structural view of a shift lever in the cutting device according to the embodiment of the present invention.

Fig. 15 is a schematic structural diagram of a rack and a knife clamping mechanism in the cutting device according to the embodiment of the invention.

Fig. 16 is a schematic diagram of the engagement between the knife clamping mechanism and the movable knife in the cutting device according to the embodiment of the invention.

Fig. 17 is a schematic structural view of a cutter clamping shaft in the cutting device according to the embodiment of the invention.

Fig. 18 is a schematic structural view of a fixed integral type blade fixing plate in the cutting apparatus according to the embodiment of the present invention.

Fig. 19 is a schematic diagram of the fixed blade and the fixed knife adjusting device in the cutting device according to the embodiment of the invention.

Fig. 20 is a schematic structural diagram of a stationary blade adjusting device in the cutting device according to the embodiment of the present invention.

Wherein the figures include the following reference numerals:

1. a frame; 2. a drive shaft; 3. a circular plate; 4. a sleeve; 5. moving a knife; 6. a driven shaft; 7. a telescopic connection structure; 8. a telescopic driving mechanism; 9. a gear shift mechanism; 10. a knife clamping mechanism; 11. fixing the rod; 12. a stationary knife assembly; 31. a groove; 32. clamping a hoop; 61. a pull rod mounting groove; 71. a telescopic connecting key; 72. a circular ring; 73. a connecting key mounting groove; 81. a pull rod; 82. a connecting rod; 91. a shift handle; 92. an outer cam; 93. a bull gear; 94. a pinion gear; 95. an inner concave wheel; 101. clamping the cutter shaft; 102. a top gear sleeve; 103. a cutter clamping block; 104. a spring; 121. a fixed integral type fixed cutter plate; 122. a gap; 123. a fixed cutter mounting shaft; 124. fixing a blade; 125. a torsion spring; 126. a stationary knife adjustment device; 1241. a short bar; 1261. a rotating shaft; 1262. adjusting the gear sleeve; 1263. and adjusting the top teeth.

Detailed Description

In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The use of "first," "second," and similar terms in the description and in the claims of the present application do not denote any order, quantity, or importance, but rather the intention is to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" and "coupled" and the like are not restricted to direct connections, but may be indirectly connected through other intermediate connections. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Referring to fig. 1 to 20, a cutting device with an adjustable moving blade pitch according to an embodiment of the present invention includes a frame 1, a driving shaft 2 is rotatably mounted on the frame 1, a plurality of circular plates 3 are fixedly mounted on the driving shaft 2, a sleeve 4 is rotatably sleeved on an outer side of each circular plate 3 (the circular plates 3 are not fixedly connected with the sleeves 4, and adjacent sleeves 4 are not connected), and two moving blades 5 are fixedly mounted on an outer portion of each sleeve 4; a connecting groove (not shown in the figure) is arranged on the inner side of the sleeve 4; a groove 31 is arranged at the eccentric position of the circular plate 3, a driven shaft 6 penetrates through the groove 31, and the driven shaft 6 can rotate in the groove 31; a telescopic connection structure 7 is mounted on the driven shaft 6 corresponding to each sleeve 4, the telescopic connection structure 7 comprises telescopic connection keys 71, the telescopic connection keys 71 are matched with the connection grooves on the inner sides of the sleeves 4 and used for connecting or separating the driven shaft 6 and the sleeves 4, and the number and/or the telescopic direction of the telescopic connection keys 71 in the telescopic connection structures 7 are different.

In the cutting device, the circular plates 3 are arranged on the driving shaft 2, the driven shaft 6 penetrates through the circular plates 3, the sleeve 4 is correspondingly and rotatably sleeved on the outer side of each circular plate 3, the connecting groove is formed in the inner side of the sleeve 4, the telescopic connecting structure 7 is arranged on the driven shaft 6, and the telescopic connecting key 71 in the telescopic connecting structure 7 is telescopically connected with the connecting groove; when the telescopic connecting key 71 extends into the connecting groove, the driven shaft 6 can be connected with the sleeve 4, the driven shaft 6 is driven to rotate through the rotation of the driving shaft 2, and then the sleeve 4 and the movable cutter 5 are driven to rotate through the telescopic connecting key 71 to cut crops; when the telescopic connecting key 71 retracts from the connecting groove, a neutral state is formed, power is cut off, and the corresponding sleeve 4 and the movable knife 5 do not rotate; through setting up the quantity and/or the flexible direction of flexible connection key 71 in a plurality of flexible connection structure 7 into inequality, when the interval that moves sword 5 needs to be adjusted, only need rotate driven shaft 6, change with the corresponding flexible connection key 71's of spread groove on the sleeve 4 quantity, can make specific sleeve 4 rotate, and other sleeves 4 do not rotate, realize carrying out the interval adjustment of the sword 5 that cuts. When the distance between the movable blades 5 is adjusted, the cutting device does not need to disassemble and assemble the cutter, is convenient to operate and can improve the working efficiency.

Specifically, referring to fig. 5, 6, 7, 10 and 11, in the present embodiment, the telescopic connection structure 7 includes a circular ring 72, a connection key installation groove 73 is formed in the circular ring 72 along the radial direction of the driven shaft 6, and the telescopic connection key 71 is telescopically installed in the connection key installation groove 73; a telescopic driving mechanism 8 is provided on the driven shaft 6, and the telescopic driving mechanism 8 is used for driving the telescopic connecting key 71 to extend and retract in the connecting key installation groove 73 so that the telescopic connecting key 71 extends into or out of the connecting groove on the inner side of the sleeve 4. When the distance between the movable blades 5 is required to be changed, the cutting device stops working, and the telescopic connecting key 71 is retracted from the connecting groove of the sleeve 4 through the telescopic driving mechanism 8 to form a neutral position; then the driven shaft 6 is rotated to lead the telescopic connecting keys 71 with different numbers to be aligned with the corresponding connecting grooves on the sleeve 4; and then the changed number of the telescopic connecting keys 71 are extended into the corresponding connecting grooves through the telescopic driving mechanism 8, the power is transmitted to the movable knife 5 through the driving shaft 2, the driven shaft 6, the telescopic connecting keys 71 and the sleeve 4, the movable knife 5 on the specific sleeve 4 is driven to rotate, and the adjustment of the distance between the movable knives 5 is realized.

Further, referring to fig. 3 and 4, a plurality of grooves 31 are formed in the circular plate 3 along the circumferential direction of the circular plate 3, and a driven shaft 6 is rotatably inserted into each groove 31; further, the number and/or the extending/retracting direction of the extendable connecting keys 71 in the extendable connecting structure 7 at the same position (at the same driven shaft 6 length position) are different from one driven shaft 6 to another. With the arrangement, when the distance between the movable blades 5 is adjusted, the driving shaft 2 and the circular plate 3 can be rotated, so that different driven shafts 6 correspond to the connecting grooves of the sleeve 4; because on different driven shafts 6, the quantity and/or the flexible direction of flexible connecting key 71 among the flexible connection structure 7 of same position department are inequality, can make the adjustable interval quantity of moving sword 5 more through setting up many driven shafts 6.

Specifically, referring to fig. 6 and 11, in the present embodiment, the driven shaft 6 is provided with a plurality of pull rod mounting grooves 61 along the axial direction, the telescopic driving mechanism 8 includes a pull rod 81 mounted in the pull rod mounting groove 61, the pull rod 81 is hinged with a connecting rod 82, and the other end of the connecting rod 82 is hinged with the telescopic connecting key 71. With this arrangement, the telescopic connecting key 71 can be driven to extend and retract in the connecting key mounting groove 73 by pulling the pull rod 81 in the axial direction of the driven shaft 6 via the connecting rod 82. As shown in fig. 11, pulling the pull rod 81 leftward retracts the telescopic link 71 into the link mounting groove 73, and pushing the pull rod 81 rightward extends the telescopic link 71 out of the link mounting groove 73 and into the connecting groove inside the sleeve 4.

In order to facilitate the shifting operation and the adjustment of the distance between the movable blades 5, referring to fig. 12, 13 and 14, in this embodiment, the cutting device further includes a shifting mechanism 9, the shifting mechanism 9 includes a shifting handle 91, an outer cam 92 and a large gear 93 are mounted on the shifting handle 91, a small gear 94 is mounted at the end of the driven shaft 6, the small gear 94 can be meshed with the large gear 93, and an inner concave wheel 95 is connected to the end of the pull rod 81, and the inner concave wheel 95 is matched with the outer cam 92. It should be noted that the inner concave wheel 95 is fixedly connected with the pull rod 81 and is not connected with the driven shaft 6; the pinion 94 is fixedly connected to the driven shaft 6 and is not connected to the pull rod 81.

The plurality of pull rods 81 on the same driven shaft 6 are fixedly connected to the same concave wheel 95, and the plurality of concave wheels 95 are externally connected with an external cam 92. When the driven shaft 6 is rotated, the inner concave wheel 95 rotates around the circumference of the outer cam 92, and the outer cam 92 is relatively stationary. When the driven shaft 6 stops rotating, the gear shifting handle 91 drives the outer cam 92 to move outwards, the inner concave wheel 95 and the pull rod 81 synchronously move outwards, so that the telescopic connecting key 71 retracts from the connecting groove of the sleeve 4 to reach a neutral position.

Each driven shaft 6 is fixedly provided with a small gear 94, the large gear 93 is matched with the small gears 94, when the mechanism reaches a neutral gear state, the large gear 93 is meshed with the small gears 94 through the gear shifting handle 91, the large gear 93 is rotated to drive the small gears 94 to rotate, and then the telescopic connecting keys 71 corresponding to the connecting grooves in the sleeve 4 are adjusted to realize gear shifting.

In order to facilitate the installation of the driven shaft 6, referring to fig. 3 and 4, in the present embodiment, the slot 31 of the circular plate 3 is an open slot, the slot 31 communicates with the outside of the circular plate 3, and a clamp 32 for fixing the driven shaft 6 in the slot 31 is hinged to the circular plate 3 at the slot 31. Specifically, a plurality of grooves 31 are symmetrically formed in the circular plate 3 along the circumferential direction thereof, a clamp 32 is hingedly mounted in each groove 31, and a driven shaft 6 is rotatably mounted in each groove 31. In this arrangement, when the driven shaft 6 is mounted, the driven shaft 6 is first placed in the groove 31, and then the clamp 32 is closed to clamp the driven shaft 6 in the groove 31.

Referring to fig. 1, 2, 15, 16 and 17, in the present embodiment, a knife clamping mechanism 10 is mounted on the frame 1 above the sleeve 4, and the knife clamping mechanism 10 is used for fixing the fixed knife 5 which does not rotate. The cutter clamping mechanism 10 comprises a cutter clamping shaft 101 which is rotatably arranged on the frame 1, and a plurality of top gear sleeves 102 are arranged on the cutter clamping shaft 101 corresponding to the movable cutters 5 on the sleeves 4; a fixed rod 11 is respectively arranged on the two sides of the lower part of the cutter clamping shaft 101 on the frame 1, and a plurality of cutter clamping blocks 103 are arranged between the two fixed rods 11; the cutter clamping blocks 103 are correspondingly arranged below the top tooth sleeves 102 one by one and are correspondingly arranged above the movable cutters 5 one by one; both sides of the cutter clamping block 103 are respectively installed on the two fixing rods 11 through a spring 104. With the arrangement, for the fixed knife 5 which does not rotate, the knife clamping block 103 is pressed downwards through the top teeth on the top tooth sleeve 102, so that the knife clamping block 103 is pressed against the fixed knife 5 to position the fixed knife 5 and prevent the fixed knife 5 from rotating; for the rotating moving knife 5, the top gear sleeve 102 does not press the knife clamping block 103, and the knife clamping block 103 is in an initial state under the action of the spring 104 and does not contact with the moving knife 5. Specifically, the number and/or the extending direction of the top teeth on the plurality of top tooth sleeves 102 are different, and the number and the extending direction thereof are matched with the arrangement condition of the telescopic connecting key 71 on the driven shaft 6.

Referring to fig. 1, 2, 18, 19 and 20, in the present embodiment, a fixed knife assembly 12 is further installed on the frame 1 at one side of the sleeve 4, and the specific structure of the fixed knife assembly 12 may take the following two forms:

the first type of fixed blade unit 12 is a fixed and integrated fixed blade plate 121 attached to the frame 1, and referring to fig. 18, a plurality of slits 122 through which the movable blades 5 pass are opened in the fixed and integrated fixed blade plate 121. With the arrangement, the movable knife 5 clockwise penetrates through the gap 122 of the fixed integrated knife fixing plate 121 from bottom to top, and in the process that materials fall from top to bottom, the driven knife 5 is struck to be extruded and continues to fall after being cut off, and crops with high toughness, such as vines, can be prevented from being wound on the movable knife 5 through the fixed integrated knife fixing plate 121.

The second fixed knife assembly 12 is an adjustable fixed knife, and referring to fig. 1 and 2, the adjustable fixed knife includes a fixed knife mounting shaft 123 mounted on the frame 1, a plurality of fixed knife blades 124 are mounted on the fixed knife mounting shaft 123 at intervals, and the fixed knife blades 124 are rotatably mounted on the fixed knife mounting shaft 123 through torsion springs 125; a stationary blade adjusting device 126 for rotating the stationary blade 124 about the stationary blade mounting shaft 123 is further provided on the frame 1.

Specifically, referring to fig. 19 and 20, a short rod 1241 is tilted at the end of the fixed blade 124, the fixed blade adjusting device 126 includes a rotating shaft 1261 rotatably mounted on the frame 1, a plurality of adjusting toothed sleeves 1262 are mounted on the rotating shaft 1261 corresponding to the plurality of fixed blades 124, adjusting top teeth 1263 matched with the short rod 1241 are arranged on the adjusting toothed sleeves 1262, and the number and/or extending direction of the adjusting top teeth 1263 on the plurality of adjusting toothed sleeves 1262 are different. So set up, the stationary blade 124 is in the horizontal state under the natural condition; when the rotating shaft 1261 is rotated to enable the adjusting top tooth 1263 on the adjusting tooth sleeve 1262 to be abutted against the short rod 1241, the fixed blade 124 tilts up; when the rotating shaft 1261 is rotated again so that the adjusting top teeth 1263 do not contact with the short rod 1241, the fixed blade 124 returns to the horizontal state by the torsion spring 125. The number and/or the extending direction of the adjusting top teeth 1263 on the adjusting tooth sleeves 1262 on the rotating shaft 1261 are set to be different and matched with the setting condition of the telescopic connecting key 71 on the driven shaft 6, so that the fixed blade 124 at a specific position can be tilted or kept in a horizontal state according to the distance between the movable blades 5.

In order to meet the adjustable gear matched with the movable knife 5, the unused fixed knife blade 124 should be positioned at the position of the maximum cutting circle tangent line. By adopting the adjustable fixed knife, the root of the fixed knife 124 is provided with the short rod 1241, the short rod 1241 and the knife body of the fixed knife 124 preferably form an included angle of 135 degrees, and the short rod 1241 is matched with the adjusting top tooth 1263 for adjusting the angle of the knife body of the fixed knife 124. By the arrangement, the rotating shaft 1261 can be rotated to enable the adjusting top teeth 1263 to be in contact with or separated from the short rod 1241, so that the gear of the adjustable fixed knife can be switched and corresponds to the gear of the movable knife 5.

The working principle of the cutting device is as follows:

when crops are cut, power is transmitted to the driven shaft 6 from the driving shaft 2 through the circular plate 3, the driven shaft 6 is driven to rotate around the driving shaft 2, the rotating driven shaft 6 drives the sleeve 4 to rotate through the telescopic connecting key 71, and the movable blade 5 is fixed on the sleeve 4 and rotates together with the sleeve 4.

When gear shifting is needed, the engine stops the movable blade 5 at a fixed position, pulls the pull rod 81 outwards (leftwards in fig. 11) to retract all the telescopic connecting keys 71 inwards, and retracts the telescopic connecting keys 71 from the connecting grooves to form a neutral gear state; then, the driven shaft 6 is rotated by a specific angle, the pull rod 81 aligned with the connecting groove at the inner side of the sleeve 4 on the driven shaft 6 is changed (the angle is determined by the number and the position of the pull rod 81 and is less than 360 degrees), then the pull rod 81 is returned inwards (rightwards in fig. 11), and the telescopic connecting key 71 extends outwards and extends into the connecting groove, so that gear shifting is completed.

The number of the telescopic connecting keys 71 on each pull rod 81 on the same driven shaft 6 is different, and generally, the number is uniformly reduced according to the number of gears. For example: if there are four shift positions, there are four tie rods 81. The number of the telescopic connecting keys 71 on the first pull rod 81 is 8, which are respectively represented as 1#, 2#, 3#, 4#, 5#, 6#, 7#, and 8#, and the 8 keys with uniform spacing are the minimum chopping spacing. Four telescopic connecting keys 71 on the second pull rod 81 are respectively represented as 1#, 3#, 5#, and 7#, and 4 keys with uniform spacing are 2 times of the minimum spacing. The number of the telescopic connecting keys 71 on the third pull rod 81 is three, which are respectively represented as 1#, 4#, and 7#, and the 3 keys with uniform spacing are 3 times of the minimum spacing. The number of the telescopic connecting keys 71 on the fourth pull rod 81 is two, which are respectively expressed as 1#, 5#, and 2 keys with uniform spacing are 4 times of the minimum spacing.

When different pull rods 81 are aligned with the sleeve 4, the movable knife 5 with the telescopic connecting key 71 for transmitting power rotates for cutting, and the movable knife 5 without the telescopic connecting key 71 for transmitting power is not moved, so that gear shifting of the movable knife 5 is realized. The number of the gears is determined by the size of the driven shaft 6, so that the situation that the number of the gears is too large, parts are too small, and the gears are damaged in the power transmission process is avoided.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a move sword interval adjustable cutting device, includes frame (1), its characterized in that, rotationally install driving shaft (2) on frame (1), be provided with polylith plectane (3) on driving shaft (2), every sleeve (4) are rotationally established to the outside cover of plectane (3), the outside installation of sleeve (4) moves sword (5), the inboard of sleeve (4) is equipped with the spread groove, the eccentric position of plectane (3) is opened slotted (31), wear to be equipped with driven shaft (6) in groove (31), correspond to every on driven shaft (6) sleeve (4) all install a flexible connection structure (7), flexible connection structure (7) are including being used for making driven shaft (6) with flexible connection key (71) that sleeve (4) are connected or are separated, flexible connection key (71) with the spread groove phase-match, the number and/or the telescopic direction of the telescopic connecting keys (71) in the telescopic connecting structures (7) are different.

2. The cutting device with the adjustable movable blade interval according to claim 1, wherein the telescopic connecting structure (7) comprises a circular ring (72), a connecting key installation groove (73) is formed in the circular ring (72) along the radial direction of the driven shaft (6), and the telescopic connecting key (71) is telescopically installed in the connecting key installation groove (73); the driven shaft (6) is provided with a telescopic driving mechanism (8) which is used for driving the telescopic connecting key (71) to be in the connecting key installation groove (73) to be telescopic so that the telescopic connecting key (71) stretches into or out of the connecting groove.

3. The cutting device with the adjustable movable blade interval according to claim 2, characterized in that a plurality of grooves (31) are formed in the circular plate (3) along the circumferential direction, and each driven shaft (6) is rotatably arranged in each groove (31) in a penetrating manner; on different driven shafts (6), the number and/or the telescopic direction of telescopic connecting keys (71) in the telescopic connecting structure (7) at the same position are different.

4. The cutting device with the adjustable movable blade interval according to claim 2, wherein a pull rod mounting groove (61) is formed in the driven shaft (6) along the axial direction, the telescopic driving mechanism (8) comprises a pull rod (81) mounted in the pull rod mounting groove (61), a connecting rod (82) is hinged to the pull rod (81), and the other end of the connecting rod (82) is hinged to the telescopic connecting key (71).

5. The cutting device with the adjustable moving blade interval as claimed in claim 4, further comprising a gear shifting mechanism (9), wherein the gear shifting mechanism (9) comprises a gear shifting handle (91), an outer cam (92) and a large gear (93) are mounted on the gear shifting handle (91), a small gear (94) is mounted at the end of the driven shaft (6), the small gear (94) is meshed with the large gear (93), an inner concave wheel (95) is connected to the end of the pull rod (81), and the inner concave wheel (95) is matched with the outer cam (92).

6. The cutting device with the adjustable movable blade interval according to claim 1, wherein the slot (31) is an open slot, the slot (31) is communicated with the outside of the circular plate (3), and a clamp (32) for fixing the driven shaft (6) in the slot (31) is hinged to the circular plate (3) at the slot (31).

7. The cutting device with the adjustable movable blade interval according to any one of claims 1 to 6, characterized in that a blade clamping mechanism (10) for fixing the movable blade (5) which does not rotate is mounted above the sleeve (4) on the frame (1), the blade clamping mechanism (10) comprises a blade clamping shaft (101) which is rotatably mounted on the frame (1), a plurality of top toothed sleeves (102) are mounted on the blade clamping shaft (101) corresponding to the movable blades (5) on the plurality of sleeves (4), two fixing rods (11) are arranged below the blade clamping shaft (101) on the frame (1), and a plurality of blade clamping blocks (103) are arranged between the two fixing rods (11); the cutter clamping blocks (103) are correspondingly arranged below the top tooth sleeves (102) one by one and are correspondingly arranged above the movable cutters (5) one by one; two sides of the cutter clamping block (103) are respectively arranged on the two fixing rods (11) through a spring (104).

8. The cutting device with the adjustable movable blade interval according to any one of claims 1 to 6, characterized in that a fixed blade assembly (12) is further mounted on the frame (1), the fixed blade assembly (12) is a fixed integral fixed blade plate (121) mounted on the frame (1), and a plurality of gaps (122) for the movable blade (5) to pass through are formed in the fixed integral fixed blade plate (121).

9. The cutting device with the adjustable moving blade interval according to any one of claims 1 to 6, characterized in that a fixed blade assembly (12) is further mounted on the frame (1), the fixed blade assembly (12) is an adjustable fixed blade, the adjustable fixed blade comprises a fixed blade mounting shaft (123) mounted on the frame (1), a plurality of fixed blades (124) are mounted on the fixed blade mounting shaft (123) at intervals, the fixed blades (124) are rotatably mounted on the fixed blade mounting shaft (123) through torsion springs (125), and a fixed blade adjusting device (126) for enabling the fixed blades (124) to rotate around the fixed blade mounting shaft (123) is further arranged on the frame (1).

10. The cutting device with the adjustable movable blade spacing according to claim 9, wherein a tilted short rod (1241) is arranged at the end of the fixed blade (124), the fixed blade adjusting device (126) comprises a rotating shaft (1261) rotatably mounted on the frame (1), a plurality of adjusting tooth sleeves (1262) are mounted on the rotating shaft (1261) corresponding to the plurality of fixed blades (124), adjusting top teeth (1263) matched with the short rod (1241) are arranged on the adjusting tooth sleeves (1262), and the number and/or the extending direction of the adjusting top teeth (1263) on the plurality of adjusting tooth sleeves (1262) are different.

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