A reed chain thrust mechanism

Abstract

The utility model discloses a rice-pulling chain thrust mechanism, which relates to the technical field of agricultural machinery and equipment, including a cutting platform frame, a driving wheel and a driven wheel, wherein a rice-pulling chain is sleeved on the driving wheel and the driven wheel, and comprises a sliding thrust mechanism, wherein the sliding thrust mechanism comprises a movable bracket and a fixed bracket, wherein the fixed bracket is mounted on the cutting platform frame, the movable bracket is slidably inserted on the fixed bracket, the driven wheel is arranged on the movable bracket, an adjusting arm is arranged on the movable bracket, a locking piece and an elastic piece are arranged on the adjusting arm, a locking portion is arranged on the locking piece, the locking piece is hingedly arranged on the adjusting arm, a limiting piece is arranged on the fixed bracket, a plurality of limiting protrusions are evenly arranged on the limiting piece along the length direction of the cutting platform frame, a limiting groove is formed by a gap between two adjacent limiting protrusions, the elastic piece presses the locking portion on the locking piece into the limiting groove, and the scheme can realize a certain degree of locking of the rice-pulling chain in a tensioned state.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery and equipment, in particular to a thrust stop mechanism for a weeding chain. Background Art

[0002] A corn harvester is an agricultural machine for automatic or semi-automatic harvesting of corn, wherein the cutting table of the corn harvester is used to pick corn ears to separate the ears from the stalks, and the corn harvester uses a reed chain to push the corn stalks apart so that the harvesting knife can better cut the corn ears. The reed chain needs to be installed on a driving wheel and a driven wheel, and the driving wheel drives the reed chain to run. The driving wheel and the driven wheel in the prior art are in a fixed state, and it is very inconvenient to inspect, remove and install the reed chain during the inspection and maintenance of the equipment. Utility Model Content

[0003] The utility model aims to provide a reel chain thrust mechanism in view of the deficiencies in the prior art.

[0004] The cam-shaped wheel is annularly fixed to the chassis, and the cam-shaped wheel is provided with a plurality of movable parts, and the movable parts are provided with a plurality of movable parts.

[0005] Furthermore, a stop edge is provided on one side of the limiting protrusion, and the stop edge is located on a side of the limiting protrusion close to the movable bracket. The angle X formed by the stop edge and the limiting member is 20°≤X≤90°.

[0006] Furthermore, a guide edge is provided on one side of the limiting protrusion, and the guide edge is located on a side of the limiting protrusion away from the movable bracket. An angle Y formed by the guide edge and the limiting member is 100°≥Y>180°.

[0007] Furthermore, the locking portion is bent on the locking piece, and the locking portion is bent toward the limiting piece.

[0008] Furthermore, a sliding cavity is provided on the movable bracket along the length direction of the cutting platform frame, and the movable bracket is slidably embedded in the sliding cavity. A tensioning spring is provided between the movable bracket and the fixed bracket, and the tensioning spring pushes the movable bracket to a side away from the fixed bracket.

[0009] Furthermore, a dustproof rubber sleeve is provided on one side of the sliding cavity close to the movable bracket, one side of the dustproof rubber sleeve is sealed and matched with the outer side of the sliding cavity, and the other side of the dustproof rubber sleeve is sealed and matched with the outer side wall of the movable bracket.

[0010] Furthermore, a spring limiting rod is arranged in the sliding cavity, and the tensioning spring is sleeved on the spring limiting rod.

[0011] Furthermore, the cross-section of the tension spring is rectangular.

[0012] Furthermore, the elastic member is a torsion spring, one end of the torsion spring is fixed on the adjustment arm, and the other end of the torsion spring is fixed on a side of the locking member close to the locking portion.

[0013] Furthermore, a hinged cross bar is provided on the adjusting arm, one end of the locking portion is hinged to the intersecting cross bar, and the torsion spring is sleeved on the intersecting cross bar.

[0014] The advantages of the utility model compared with the prior art are:

[0015] First: A sliding push-stop mechanism is provided in this scheme, and the driving wheel and the driven wheel are respectively installed on the fixed bracket and the movable bracket on the sliding push-stop mechanism. The cooperation of the locking member and the limiting member can meet the expansion cooperation of the fixed bracket and the movable bracket, and prevent the movable bracket from directly retracting into the fixed bracket after being squeezed by external force. When the equipment needs to be repaired or the plowing chain needs to be dismantled, the locking member is manually pushed to make the locking part on the locking member disengage from the limiting groove, and then the movable bracket is pushed to move the driven wheel toward the driving wheel, thereby facilitating the installation and disassembly of the plowing chain.

[0016] Second: In this solution, a stop edge is provided on one side of the limiting protrusion, and a guide edge is provided on the other side. The stop edge can be used to stop the locking member to prevent the movable bracket from moving toward the side of the driving wheel. The locking member can be guided by the guide edge to facilitate the movable bracket to slide to the side away from the driving wheel.

[0017] Thirdly, the locking portion in the present solution is bent on the locking member, and the locking portion is bent toward the limiting member, thereby improving the degree of fit between the locking portion and the limiting groove.

[0018] Fourthly: In this scheme, a sliding cavity is provided on the movable bracket along the length direction of the cutting platform frame, and the movable bracket is slidably embedded in the sliding cavity. The movable bracket is limited by the provided sliding cavity so that the movable bracket can slide and cooperate in a limited direction. A tensioning spring is provided between the movable bracket and the fixed bracket, and the tensioning spring pushes the movable bracket to the side away from the fixed bracket. The tensioning spring provides a certain tensioning force to make the movable bracket move to the side away from the driving wheel, thereby achieving tensioning of the straw chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0020] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 3 It is a schematic diagram of the matching state of the movable bracket and the fixed bracket;

[0022] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 5 It is a cross-sectional view of the movable bracket and the fixed bracket;

[0024] Figure 6 It is a schematic diagram of the structure of the locking member and the limiting member.

[0025] Figure numerals: cutting platform frame 1, driving wheel 2, driven wheel 3, straw chain 4, sliding push-stop mechanism 5, movable bracket 51, adjusting arm 511, locking piece 512, locking portion 5121, elastic piece 513, hinged cross bar 514, fixed bracket 52, limiting piece 521, limiting protrusion 5211, stopping edge 52111, guiding edge 52112, tensioning spring 53, dustproof rubber sleeve 54, spring limiting rod 55. DETAILED DESCRIPTION

[0026] Combined with Figure 1-6As shown, a reed chain thrust mechanism comprises a cutting platform frame 1, a driving wheel 2 and a driven wheel 3, wherein the driving wheel 2 and the driven wheel 3 are sleeved with a reed chain 4, and further comprises a sliding thrust mechanism 5, wherein the sliding thrust mechanism 5 comprises a movable bracket 51 and a fixed bracket 52, wherein the fixed bracket 52 is mounted on the cutting platform frame 1, wherein the movable bracket 51 is slidably inserted on the fixed bracket 52, wherein the driven wheel 3 is arranged on the movable bracket 51, and the interval between the driving wheel 2 and the driven wheel 3 can be changed by adjusting the position of the movable bracket 51, so as to change the tension of the reed chain 4, wherein the movable bracket 51 is provided with an adjusting arm 511, wherein the adjusting arm 511 is provided with a locking member 512 and an elastic member 513, wherein the locking member 512 is provided with a locking portion 5121, wherein the locking member 512 is provided with a locking portion 5122, wherein the locking member 512 is provided with a locking portion 5123, wherein the locking member 512 is provided with a locking portion 5124, wherein the locking member 512 is provided with a locking portion 5125, wherein the locking member 512 is provided with a locking portion 5126, wherein the locking member 512 is provided with a locking portion 5127, wherein the locking member 512 is provided with a locking portion 5128, wherein the locking member 512 is provided with a locking portion 5129, wherein the locking member 512 is provided with a locking portion 5121, wherein the locking member 512 is provided with a locking portion 5127, wherein the locking member 512 is provided with a locking portion 5126, wherein the locking member 512 is provided with a locking portion 5126, wherein the locking member 512 is provided with a locking portion 5126, wherein the locking The stopper 512 is hingedly arranged on the adjusting arm 511, and a limiting member 521 is arranged on the fixed bracket 52, and the limiting member 521 is located below the locking member 512. A plurality of limiting protrusions 5211 are evenly arranged on the limiting member 521 along the length direction of the cutting platform frame 1, and a gap between two adjacent limiting protrusions 5211 forms a limiting groove, and the elastic member 513 presses the locking portion 5121 on the locking member 512 into the limiting groove. The cooperation between the arranged adjusting arm 511 and the limiting groove can prevent the movable bracket 51 from being squeezed by external force and directly retracting into the fixed bracket 52. If the movable bracket 51 is folded into the fixed bracket 52 during the operation of the equipment, the straw chain 4 mounted on the driving wheel 2 and the driven wheel 3 will be loosened, thereby affecting the normal operation of the equipment.

[0027] Preferably, a stop edge 52111 is provided on one side of the limiting protrusion 5211, and a guide edge 52112 is provided on the other side, the stop edge 52111 is located on the side of the limiting protrusion 5211 close to the movable bracket 51, and the guide edge 52112 is located on the side of the limiting protrusion 5211 far from the movable bracket 51, and the stop edge 52111 can be stopped by the locking member 512 to prevent the movable bracket 51 from moving toward one side of the driving wheel 2, and the locking member 512 can be guided by the guiding edge 52112, so as to facilitate the movable bracket 51 to slide toward the side away from the driving wheel 2;

[0028] Therefore, in the present embodiment, the stop edges 52111 and the guide edges 52112 on both sides of the limiting protrusion 5211 need to form a corresponding angle, wherein the stop edge 52111 and the limiting member 521 form an angle X, wherein the angle X is a right angle or an acute angle, and preferably the angle X is 20°≤X≤90°, and further preferably the angle X is 80°~90°, so that the locking portion 5121 can be locked, wherein when the angle X is 80°~90°, sufficient supporting force can be provided while satisfying the locking condition, thereby ensuring the stability during locking and preventing the locking member 512 from falling off;

[0029] The angle Y formed by the guide edge 52112 and the limiting member 521 is an obtuse angle. The preferred setting range of the angle Y is 100°≥Y>180°. The angle Y is further preferably set to 150°~160°, so as to guide the locking portion 5121. When the angle Y is 150°~160°, the locking portion 5121 can be smoothly guided, which is convenient for the operation of the staff.

[0030] Preferably, the locking portion 5121 is bent on the locking member 512, and the locking portion 5121 is bent toward the limiting member 521, so as to improve the fit between the locking portion 5121 and the limiting groove and improve the stability during locking.

[0031] Preferably, a sliding cavity is provided on the movable bracket 51 along the length direction of the cutting platform frame 1, and the movable bracket 51 is slidably embedded in the sliding cavity. The movable bracket 51 is limited by the provided sliding cavity, so that the movable bracket 51 can be installed to slide in a limited direction. A tensioning spring 53 is provided between the movable bracket 51 and the fixed bracket 52, and the tensioning spring 53 pushes the movable bracket 51 to the side away from the fixed bracket 52. The tensioning spring 53 provides a certain tensioning force to push the movable bracket 51 to the side away from the driving wheel 2, thereby achieving tensioning of the straw chain 4.

[0032] Furthermore, a dustproof rubber sleeve 54 is provided on one side of the sliding cavity close to the movable bracket 51, and one side of the dustproof rubber sleeve 54 is sealed and matched with the outer side of the sliding cavity, and the other side of the dustproof rubber sleeve 54 is sealed and matched with the outer wall of the movable bracket 51. The dustproof rubber sleeve 54 can be provided to seal the movable bracket 51 and the fixed bracket 52, thereby preventing sand and gravel debris from being embedded in the sliding cavity and causing the equipment to be stuck when telescoping.

[0033] Furthermore, in order to improve the setting stability of the tensioning spring 53, a spring limiting rod 55 is provided in the sliding cavity, and the tensioning spring 53 is sleeved on the spring limiting rod 55. The tensioning spring 53 is limited and supported by the spring limiting rod 55 to ensure the setting stability of the tensioning spring 53.

[0034] Optionally, the tensioning spring 53 in the present embodiment may be a columnar spring, wherein the cross-section of the tensioning spring 53 may be circular or rectangular, and may be further configured during assembly in combination with the internal structure of the product and the required tensioning force.

[0035] Preferably, the elastic member 513 is a torsion spring, a columnar spring, a spring sheet, a tension spring, etc., wherein it is preferably configured as a torsion spring, one end of which is fixed on the adjusting arm 511, and the other end of which is fixed on the side of the locking member 512 close to the locking portion 5121, and a hinged cross bar 514 is provided on the adjusting arm 511, one end of the locking portion 5121 is hinged to the intersecting cross bar, and the torsion spring is sleeved on the intersecting cross bar.

[0036] During the assembly process of the reel chain 4, the reel chain 4 is sleeved on the driving wheel 2 and the driven wheel 3, and the tensioning spring 53 is used to push the movable bracket 51 outward. During the movement of the movable bracket 51, the locking portion 5121 is driven to slide on the limiting member 521, and the limiting protrusion 5211 is guided by the guide edge 52112 to move to the next limiting protrusion 5211 position. When the reel chain 4 is tightened, the locking portion 5121 on the locking member 512 will The locking portion 5121 is locked in the limiting groove at the corresponding position by the stop edge 52111 on the limiting protrusion 5211, thereby ensuring that the reed chain 4 is in a relatively tensioned state during the operation of the equipment. When the equipment needs to be repaired or the reed chain 4 needs to be removed, the locking member 512 is manually pushed to disengage the locking portion 5121 on the locking member 512 from the limiting groove, and then the movable bracket 51 is pushed to move the driven wheel 3 toward the driving wheel 2.

[0037] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0040] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A reed chain thrust mechanism, comprising a cutting platform frame (1), a driving wheel (2) and a driven wheel (3), wherein a reed chain (4) is sleeved on the driving wheel (2) and the driven wheel (3), and characterized in that: The invention comprises a sliding push-stop mechanism (5), wherein the sliding push-stop mechanism (5) comprises a movable bracket (51) and a fixed bracket (52), wherein the fixed bracket (52) is mounted on a cutting platform frame (1), wherein the movable bracket (51) is slidably inserted on the fixed bracket (52), wherein the driven wheel (3) is arranged on the movable bracket (51), wherein an adjusting arm (511) is arranged on the movable bracket (51), wherein a locking member (512) and an elastic member (513) are arranged on the adjusting arm (511), wherein a locking member (512) and an elastic member (513) are arranged on the locking member (512), wherein a locking portion (5121), the locking member (512) is hingedly arranged on the adjusting arm (511), a limiting member (521) is arranged on the fixing bracket (52), the limiting member (521) is located below the locking member (512), a plurality of limiting protrusions (5211) are evenly arranged on the limiting member (521) along the length direction of the cutting platform frame (1), a gap between two adjacent limiting protrusions (5211) forms a limiting groove, and the elastic member (513) presses the locking portion (5121) on the locking member (512) into the limiting groove.

2. A reed chain thrust mechanism according to claim 1, characterized in that: A stop edge (52111) is provided on one side of the limiting protrusion (5211), and the stop edge (52111) is located on a side of the limiting protrusion (5211) close to the movable bracket (51), and an angle X formed by the stop edge (52111) and the limiting member (521) is 20°≤X≤90°.

3. A reed chain thrust mechanism according to claim 1, characterized in that: A guide edge (52112) is provided on one side of the limiting protrusion (5211), and the guide edge (52112) is located on a side of the limiting protrusion (5211) away from the movable bracket (51), and an angle Y formed by the guide edge (52112) and the limiting member (521) is 100°≥Y>180°.

4. A reed chain thrust mechanism according to claim 1, characterized in that: The locking portion (5121) is bent and arranged on the locking member (512), and the locking portion (5121) is bent towards the limiting member (521).

5. The reed chain thrust mechanism according to claim 1, characterized in that: A sliding cavity is provided on the movable bracket (51) along the length direction of the cutting platform frame (1), and the movable bracket (51) is slidably embedded in the sliding cavity. A tensioning spring (53) is provided between the movable bracket (51) and the fixed bracket (52), and the tensioning spring (53) pushes the movable bracket (51) to a side away from the fixed bracket (52).

6. A reed chain thrust mechanism according to claim 5, characterized in that: A dustproof rubber sleeve (54) is provided on one side of the sliding cavity close to the movable bracket (51); one side of the dustproof rubber sleeve (54) is in sealed cooperation with the outer side of the sliding cavity, and the other side of the dustproof rubber sleeve (54) is in sealed cooperation with the outer side wall of the movable bracket (51).

7. A reed chain thrust mechanism according to claim 5, characterized in that: A spring limiting rod (55) is arranged in the sliding cavity, and the tensioning spring (53) is sleeved on the spring limiting rod (55).

8. The reed chain thrust mechanism according to claim 5, characterized in that: The cross section of the tension spring (53) is rectangular.

9. The reed chain thrust mechanism according to claim 1, characterized in that: The elastic member (513) is a torsion spring, one end of which is fixed on the adjustment arm (511), and the other end of which is fixed on a side of the locking member (512) close to the locking portion (5121).

10. A reed chain thrust mechanism according to claim 9, characterized in that: The regulating arm (511) is provided with a hinged cross bar (514), one end of the locking portion (5121) is hinged to the cross bar, and the torsion spring is sleeved on the cross bar.

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