CN114375698B - A rope tension control mechanism and a baler - Google Patents

Abstract

The invention discloses a rope tension control mechanism and a baler, wherein the rope tension control mechanism comprises a fixed shaft, a rope reel and a tightness control mechanism, the rope rope reel is rotatably connected to the fixed shaft, and the tightness control mechanism is provided with On one side of the rope reel; the slack control mechanism includes a control turntable, a slack switch and a ratchet, and a first elastic element is arranged between the slack switch and the control turntable, and the first elastic element The elastic force always pushes the elastic switch member against the teeth of the ratchet wheel; a second elastic element is arranged between the rope reel and the elastic switch member, and one end of the second elastic member acts on the On the rope reel, the other end of the second elastic element acts on the elastic switch member. The invention can cooperate with a small baler to realize the supply of ropes, and has the function of tension control, which is beneficial to cooperate with the knotter.

Description

A rope tension control mechanism and a baler

technical field

The invention relates to an agricultural machine, in particular to a rope tension control mechanism and a baler.

Background technique

After wheat, corn and other crops are harvested, the remaining wheat straw and corn straw waste will be scattered in the farmland. In order to better recycle and reuse the straw, a baler is generally used to bundle it for collection and transportation. When collecting and bundling straw, most of them use D-type knotter to bundle and knot the straw, which has the advantages of good reliability and high degree of automation. In the prior art, for small balers, vertical balers, etc. with the main shaft of the knotter set vertically, the traditional rope box cannot be adapted. Therefore, it is necessary to design a small, lightweight and Simple installation of rope reel, and can control the tension of the rope, so that it can be adapted to the D-type knotter to better complete the straw binding process.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a rope tension control mechanism, which can cooperate with a small baler to realize the supply of rope, and has a tension control function, which is beneficial to cooperate with a knotter.

Another object of the present invention is to provide a baler including the above-mentioned wire tension control mechanism.

The object of the present invention is achieved through the following technical solutions:

A rope tension control mechanism, comprising a fixed shaft, a rope winding reel and a tightness control mechanism, the rope winding disk is rotatably connected to the fixed shaft, and the tightness control mechanism is arranged on one side of the rope winding disk; Wherein, the tightness control mechanism includes a control dial, a tightness switch member rotatably connected to the control dial, and a ratchet fixedly connected to the fixed shaft, and a first elastic switch is provided between the tightness switch member and the control dial element, the elastic force of the first elastic element always pushes the elastic switch member against the teeth of the ratchet to prevent the control turntable from rotating; Two elastic elements, one end of the second elastic element acts on the rope reel to always make the rope reel tend to rotate in the direction of rope retraction, and the other end of the second elastic element acts on the rope reel On the slack switch member, and always urge the slack switch member to have a tendency to rotate to loosen the teeth of the ratchet.

The working principle of the above rope tension control mechanism is:

A rope for tying straws is wound on the rope reel, and the end of the rope is connected with a knotter. During operation, under the pulling of the knotter, the rope reel rotates in the direction of releasing the rope, and the rope is released to realize the supply of the rope; when the rope reel rotates in the direction of releasing the rope, the second elastic element One end rotates with the rope reel, so that the elastic force of the second elastic element gradually increases, so that the force of the other end of the second elastic element on the elastic switch member increases, that is, the elastic switch member rotates to loosen the teeth of the ratchet wheel The force increases; in this process of unwinding, because the second elastic element has a hindering effect on the unwinding of the rope reel, it can effectively avoid the inertia of the rope reel even under the pulling of the knotter. Under the action, the rotation angle is too large and the long rope is loose, and the released rope can always be kept in a tension state. Then, when the rope reel is rotated by a specified angle, the force of the second elastic element on the loosening ratchet teeth of the rotation of the elastic switch piece is greater than the force of the first elastic element on the elastic switch piece, overcoming the force of the first elastic element. After the elastic force, the elastic switch member is rotated and the teeth of the ratchet wheel are released; at this time, in the process of the rope reel continuing to rotate and release the rope, under the action of the second elastic element, the control turntable is pulled to rotate, and the second elastic element The elastic force gradually decreases, the ability to hinder the rope reel is also reduced, the rotation of the rope reel is easier to release the rope, and the tension of the released rope is also reduced to achieve the purpose of loosening the rope. Subsequently, when the elastic force of the second elastic element is reduced to a certain degree, the force of the second elastic element on the teeth of the ratchet to rotate the release ratchet is smaller than the pressing force of the first elastic element on the elastic switch, so that the elastic The switch piece rotates in the direction of pressing against the gear teeth, and re-presses against the gear teeth of the ratchet wheel, and finally the control dial is locked again and cannot be rotated. . In this way, using the action of the first elastic element and the second elastic element on the elastic switch member, the ability to rotate and unwind the rope reel is controlled, and the tension and relaxation of the rope are repeated alternately to ensure that the knotter completes the straw adjustment. The rope is tied and knotted, and the rope is kept at a certain tension at all times to prevent the rope from being released too much and cannot be knotted. At the same time, it has an intermittent relaxation effect to ensure the normal release of the rope.

In a preferred solution of the present invention, a connecting rod is provided on the rope reel, the connecting rod is extended in the axial direction, one end of the second elastic element is connected with the connecting rod, and the second elastic element has a The other end is connected with the elastic switch piece.

Preferably, the control dial is provided with a limit hollow slot, the limit hollow slot is correspondingly arranged with the connecting rod, the connecting rod passes through the limit hollow slot, and the limit hollow slot is along the The extension setting of the motion trajectory of the connecting rod.

In a preferred solution of the present invention, the ratchet is arranged between the rope reel and the control turntable, and the tightness switch is arranged on the inner side of the control turntable.

In a preferred solution of the present invention, the elastic switch member includes a locking portion and a connecting portion, a mounting portion is provided between the locking portion and the connecting portion, and the locking portion is arranged corresponding to the teeth of the ratchet, The elastic force of the first elastic element acts on the latching portion, the connecting portion extends radially outward, the connecting portion is connected with the second elastic element, and the mounting portion is rotatably connected with the control dial.

In a preferred solution of the present invention, the rope winding reel includes a rope winding base and two baffles, the two baffles are respectively arranged on both sides of the rope winding base, and the two baffles are larger than the two baffles. The rope base body is large, the rope winding base body includes two oppositely arranged conical shaft bodies, the smaller diameter ends of the two conical shaft bodies are connected to each other, and the diameter of the two conical shaft bodies is larger The ends are located on the outer side, and the two baffle plates are respectively connected on the outer sides of the two conical shaft bodies.

A preferred solution of the present invention further includes a guide rope assembly, the guide rope assembly includes an arc-shaped guide member, and a guide-rope groove is provided on the arc-shaped guide member; along the sending direction of the wire, the arc-shaped guide member It is arranged in front of the rope reel and extends along the direction close to the knotter; the rope on the rope reel reaches the knotter after passing through the rope guide groove on the arc guide. .

Preferably, the guide rope assembly further comprises a swing rod and a swing drive mechanism for driving the swing rod to swing outward intermittently to realize straw discharging, and the arc guide is arranged on the swing rod.

Preferably, the swing drive mechanism includes a power source and a first drive rod, the first drive rod is rotatably connected to the frame, one end of the first drive rod is connected to the power source, and the other end of the first drive rod is connected to the frame. The ends of the rocker are connected.

A baler includes a knotter and the above-mentioned rope tension control mechanism.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention utilizes the effect of the first elastic element and the second elastic element on the elastic switch member to control the ability of the rope reel to rotate and release the rope, so as to realize the alternate tension and relaxation of the rope, so as to realize the completion of the knotter. Binding and knotting of straw; in addition, during the intermittent rotation of the control turntable, the rope can maintain a certain tension during the binding and knotting process. The maximum utilization and the tightness of the binding, and the intermittent loosening effect, ensure the normal release of the rope.

2. The rope tension control mechanism of the present invention has a simple and lightweight structure, is easy to install, and has reliable performance, and is especially suitable for small balers and vertical balers.

Description of drawings

1 to 6 are schematic structural diagrams of the rope tension control mechanism and the knotter according to the present invention, wherein, FIG. 1 is a front view, FIG. 2 is a top view, FIG. 3 is a side view, FIG. 4 is a perspective view, and FIG. 5 is another A perspective view from a perspective, FIG. 6 is a partial perspective view.

Fig. 7 is a perspective view of a wire tension control mechanism.

8 to 12 are schematic diagrams of the structure in which the guide rope assembly is omitted in FIG. 7, wherein, FIG. 8 is a front view, FIG. 9 is a side view, FIG. 10 is a perspective view, FIG. 11 is a perspective view from another perspective, and FIG. 12 is a fixed view A perspective view of the shaft and slack control mechanism (the second elastic element in Figs. 8, 10-12 is not shown).

Detailed ways

The present invention will be further described below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

1-12, the present embodiment discloses a rope tension control mechanism, including a fixed shaft 13, a rope reel 2 and a tension control mechanism. The rope reel 2 is rotatably connected to the fixed shaft 13, so The tightness control mechanism is arranged on one side of the rope reel 2; wherein, the tightness control mechanism includes a control dial 12, a tightness switch 17 rotatably connected to the control dial 12, and a tightness switch 17 that is fixedly connected to the fixed shaft 13 There is a first elastic element 16 between the elastic switch member 17 and the control dial 12. The elastic force of the first elastic element 16 always pushes the elastic switch member 17 against the ratchet wheel 14. To prevent the control dial 12 from rotating; a second elastic element 18 is provided between the rope reel 2 and the elastic switch 17, and one end of the second elastic element 18 acts on the rope On the reel 2, the rope winding reel 2 is always urged to rotate in the direction of the rope, and the other end of the second elastic element 18 acts on the elastic switch member 17, and always promotes the elastic switch member 17. There is a tendency to turn the teeth of the ratchet wheel 14 .

Referring to FIGS. 8-12 , a connecting rod 15 is provided on the rope reel 2 , the connecting rod 15 is extended in the axial direction, and one end of the second elastic element 18 is connected with the connecting rod 15 . The other end of the second elastic element 18 is connected to the elastic switch member 17 . The arrangement of the connecting rod 15 facilitates the installation and fixation of the second elastic element 18 , thereby achieving the effect of hindering the reel 2 from rotating and releasing the rope.

Referring to FIGS. 8 to 12 , the control dial 12 is provided with a limit hollow slot 19 , the limit hollow slot 19 is correspondingly arranged with the connecting rod 15 , and the connecting rod 15 passes through the limit hollow slot 19 , the limiting hollow slot is extended along the movement track of the connecting rod 15 . The setting of the limiting hollow slot 19 avoids interference with the control dial 12, and can limit the rotational movement angle of the connecting rod 15, thereby effectively limiting the degree of contraction and elongation of the second elastic element 18, allowing the second elastic element 18 Keeping it within a certain elastic range is beneficial to ensure the normal operation of the tightness control mechanism, and to provide an appropriate damping force acting on the rope winding reel 2, so as to realize the tensioning effect of the rope.

Referring to FIGS. 8-12 , the ratchet wheel 14 is arranged between the rope reel 2 and the control turntable 12 , and the elastic switch 17 is arranged on the inner side of the control turntable 12 . The ratchet wheel 14 is arranged between the control turntable 12 and the rope reel 2, so that the structure of the whole control mechanism is more compact, and the volume is small, which is convenient for installation; Parts 17 and other components are also arranged between the control turntable 12 and the rope reel 2, and the control turntable 12 is used to protect the parts and avoid damage.

Referring to FIGS. 8-12 , the elastic switch member 17 includes a locking portion 24 and a connecting portion 22 , a mounting portion 23 is provided between the locking portion 24 and the connecting portion 22 , and the locking portion 24 is connected to the connecting portion 22 . The teeth of the ratchet wheel 14 are correspondingly arranged, the elastic force of the first elastic element 16 acts on the latching portion 24 , the connecting portion 22 extends radially outward, and the connecting portion 22 and the second elastic element 18 is connected, and the mounting portion 23 is rotatably connected with the control dial 12 . In this embodiment, the control dial 12 is provided with a fixing nail 20 , and the mounting portion 23 is rotatably connected to the fixing nail 20 . By arranging such a tightness switch 17, the structure is simple, and it is convenient to be connected with the first elastic element 16 and the second elastic element 18, so as to realize the tightness control of the control dial 12, thereby maintaining a certain tension of the rope.

Referring to FIGS. 3 to 7 , the rope reel 2 includes a rope reel 11 and two baffles 10 , the two baffles 10 are respectively disposed on both sides of the rope reel 11 , and the two baffles The plate 10 is larger than the rope reeling seat 11, the rope reeling seat 11 includes two oppositely arranged conical shaft bodies, the smaller diameter ends of the two conical shaft bodies are connected to each other, and the two conical shaft bodies are connected to each other. The larger diameter end of the conical shaft body is located on the outside, and the two baffles 10 are respectively connected to the outside of the two conical shaft bodies. By arranging such a rope reel 2, it is advantageous to limit the rope in the middle for better storage.

Referring to Fig. 1-Fig. 6, it also includes a guide rope assembly, the guide rope assembly includes an arc-shaped guide member 4, and a guide-rope groove 21 is provided on the arc-shaped guide member 4; The curved guide 4 is arranged in front of the rope reel 2 and extends along the direction close to the knotter 1; the rope on the rope reel 2 passes through the guide rope on the arc guide 4 After the slot 21, it reaches the knotter 1. Through the arrangement of the guide rope assembly, the rope is supported and guided, which is beneficial to improve the stability and precision of the rope during the conveying process, and at the same time, it can further tighten the rope. In this embodiment, the arc-shaped guide member 4 is bent and arranged in a certain arc, and the bending direction is outward, and the opening is arranged. In addition, the mutual guides can also be provided in a sealed arrangement to improve the protection of the string.

1-6, the rope guide assembly further includes a swing rod 3 and a swing drive mechanism that drives the swing rod 3 to swing outward intermittently to realize straw discharge, and the arc guide 4 is arranged on the Swing rod 3 on.

1-6, the swing drive mechanism includes a power source and a first drive rod 7, the first drive rod 7 is rotatably connected to the frame, and one end of the first drive rod 7 is connected to the power source, and the first drive rod 7 is connected to the power source. The other end of a driving rod 7 is connected with the end of the swing rod 3 . In this embodiment, the swing driving mechanism further includes a second driving rod 9 and a third driving rod 8 , one end of the second driving rod 9 is fixedly connected with the power rod 5 of the knotter 1 , and the second driving rod 9 The other end of the third driving rod 8 is rotatably connected with the third driving rod 8, and the other end of the third driving rod 8 is rotatably connected with the end of the first driving rod 7, so as to realize the connection between the first driving rod 7 and the power source. This embodiment The power source in the tie is constituted by the power mechanism of the knotter 1 . By providing such a swing driving mechanism, in addition to realizing the swing drive of the swing rod 3, the power mechanism of the knotter 1 is used to connect with the power rod 5 of the knotter 1, so as to reduce the use of the power source, and use the knot The power rod 5 of the device 1 drives the pendulum rod 3 to swing intermittently, the structure is ingenious, the space is saved, and the linkage is good.

Referring to FIGS. 8-12 , in this embodiment, the first elastic element 16 is a torsion spring, a fixing rod and a positioning block are provided on the inner side of the control dial 12 , and the torsion spring is installed on the fixing rod, and one end is pressed against On the positioning block, the other end is pressed against the clamping portion 24 of the elastic switch member 17 to achieve elastic pressure on the elastic switch member 17 . The second elastic element 18 is a torsion spring, one end of the torsion spring is connected with the connecting rod 15 , and the other end is connected with the connecting portion 22 of the elastic switch member 17 . In addition, both ends of the fixed shaft 13 in this embodiment are provided with connecting pieces 6, and the connecting pieces 6 are used to realize the connection with the fixing rod of the baler, which is convenient for disassembly and assembly.

Referring to Fig. 1-Fig. 12, the working principle of the rope tension control mechanism of this embodiment is as follows:

A rope for tying straws is wound on the rope reel 2 , and the end of the rope is connected with the knotter 1 . During operation, under the pulling of the knotter 1, the rope reel 2 rotates in the direction of releasing the rope, and the rope is released to realize the supply of the rope; when the rope reel 2 rotates in the direction of releasing the rope, the second One end of the elastic element 18 rotates with the rope reel 2, so that the elastic force of the second elastic element 18 is gradually increased, so that the force of the other end of the second elastic element 18 on the elastic switch member 17 increases, that is, the elastic switch The force of the gear 17 to rotate and loosen the teeth of the ratchet 14 increases; during the rope unwinding process, since the second elastic element 18 has an obstructive effect on the unwinding rotation of the rope reel 2, even when the knotter 1 It can also effectively avoid the excessively large rotation angle of the rope reel 2 under the action of inertia and loosen the excessively long rope, and can always keep the released rope in a tension state. Next, when the rope reel 2 is rotated by a specified angle, the force of the second elastic element 18 on the teeth of the loosening ratchet 14 that rotates the tension switch member 17 is greater than the force of the first elastic member 16 on the tension switch member 17 , after overcoming the elastic force of the first elastic element 16, the elastic switch member 17 is rotated, and the teeth of the ratchet wheel 14 are released; at this time, in the process of the rope reel 2 continuing to rotate and release the rope, the action of the second elastic element 18 Pull down and control the rotation of the turntable 12, the elastic force of the second elastic element 18 is gradually reduced, and the hindering ability of the rope reel 2 is also reduced, the rotation of the rope reel 2 is easier to release the rope, and the tension of the released rope is also reduced. , to achieve the purpose of loosening the rope. Subsequently, when the elastic force of the second elastic element 18 is reduced to a certain degree, the acting force of the second elastic element 18 on the tension switch member 17 to rotate and release the teeth of the ratchet wheel 14 is smaller than the force of the first elastic member 16 on the tension switch member 17 The tightening force makes the slack switch member 17 rotate in the direction of pressing against the gear teeth, and re-presses on the gear teeth of the ratchet wheel 14, and finally the control dial 12 is locked again and cannot be rotated, and the entire slack control mechanism is reset. , continue to have a tensioning effect on the rope. In this way, using the action of the first elastic element 16 and the second elastic element 18 on the tension switch member 17, the ability to rotate and unwind the rope reel 2 is controlled, and the tension and relaxation of the rope are repeated alternately to ensure knotting. The device 1 completes the binding and knotting of the straw, and keeps the rope at a certain tension at all times to prevent the rope from being released too much and cannot be knotted. At the same time, it has an intermittent relaxation effect to ensure the normal release of the rope.

This embodiment also discloses a baler, including a knotter 1 and the above-mentioned rope tension control mechanism. The baler in this embodiment includes two knotters 1 , and two rope tension control mechanisms are arranged in cooperation with each other.

The above is the preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above-mentioned content, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention, All should be equivalent replacement modes, which are all included in the protection scope of the present invention.

Claims (10)

1. The rope tension control mechanism is characterized by comprising a fixed shaft, a rope winding disc and a tightness control mechanism, wherein the rope winding disc is rotatably connected to the fixed shaft, and the tightness control mechanism is arranged on one side of the rope winding disc; the tightness control mechanism comprises a control turntable, a tightness switch piece and a ratchet wheel, wherein the tightness switch piece is rotationally connected to the control turntable, the ratchet wheel is fixedly connected to the fixed shaft, a first elastic element is arranged between the tightness switch piece and the control turntable, and the elasticity of the first elastic element always enables the tightness switch piece to be tightly abutted against the gear teeth of the ratchet wheel so as to enable the control turntable to be incapable of rotating; the rope winding disc is provided with a second elastic element between the elastic switch piece, one end of the second elastic element acts on the rope winding disc to always enable the rope winding disc to have a trend of rotating in the rope winding direction, and the other end of the second elastic element acts on the elastic switch piece to always enable the elastic switch piece to have a trend of rotating to loosen the gear teeth of the ratchet wheel.

2. The rope tension control mechanism according to claim 1, wherein a connecting rod is provided on the rope reel, the connecting rod extending in the axial direction, one end of the second elastic member is connected to the connecting rod, and the other end of the second elastic member is connected to the slack switch member.

3. The rope tension control mechanism according to claim 2, wherein a limiting hollow-out groove is formed in the control dial, the limiting hollow-out groove is arranged to correspond to the connecting rod, the connecting rod is inserted into the limiting hollow-out groove, and the limiting hollow-out groove extends along a movement track of the connecting rod.

4. The cord tension control mechanism of claim 1, wherein the ratchet wheel is disposed between the cord reel and the control dial, the slack switch member being disposed inboard of the control dial.

5. The cord tension control mechanism of claim 1, wherein the release switch member includes a latching portion and a connecting portion, a mounting portion is disposed between the latching portion and the connecting portion, the latching portion is disposed corresponding to the teeth of the ratchet wheel, the first elastic member exerts its elastic force on the latching portion, the connecting portion extends radially outward, the connecting portion is connected to the second elastic member, and the mounting portion is rotatably connected to the control dial.

6. The rope tension control mechanism according to claim 1, wherein the rope reel includes a rope reel body and two stoppers, the two stoppers are respectively provided on both sides of the rope reel body and are larger than the rope reel body, the rope reel body includes two oppositely disposed conical shaft bodies, the smaller ends of the two conical shaft bodies are connected to each other, the larger ends of the two conical shaft bodies are located on the outer side, and the two stoppers are respectively connected to the outer sides of the two conical shaft bodies.

7. The cord tension control mechanism according to claim 1, further comprising a cord guide assembly including an arcuate guide member having a cord guide groove formed therein; the arc-shaped guide piece is arranged in front of the rope winding disc along the sending direction of the rope, and extends along the direction close to the knotter; the rope on the rope winding disc passes through the rope guide groove on the arc-shaped guide piece and then reaches the knotter.

8. The rope tension control mechanism of claim 7, wherein the rope guide assembly further includes a rocker and an oscillating drive mechanism that drives the rocker to oscillate intermittently outwardly to effect straw discharge, the arcuate guide being disposed on the rocker.

9. The cord tension control mechanism of claim 8, wherein the swing drive mechanism includes a power source and a first drive lever rotatably coupled to the frame, one end of the first drive lever being coupled to the power source and the other end of the first drive lever being coupled to the end of the swing lever.

10. A baler characterised by comprising a knotter and a cord tension control mechanism as claimed in any one of claims 1 to 9.

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