Lifting mechanism and rear machine tool

Abstract

The utility model relates to the technical field of agricultural machinery, and discloses a lifting mechanism which comprises a transmission assembly and a connecting piece connected with a rear machine tool, the transmission assembly comprises a transmission piece and a moving piece connected with the transmission piece and the connecting piece, and the transmission piece is connected with a control assembly used for controlling the transmission piece to rotate. The control assembly comprises a rocker and a supporting piece used for supporting and limiting the rocker, the supporting piece is connected with the connecting piece, the transmission assembly further comprises a first limiting piece connected with the supporting piece, one end of the transmission piece sequentially penetrates through the first limiting piece and the moving piece, and when the rocker rotates, the transmission piece rotates, the moving piece moves in the axial direction of the transmission piece, and the connecting piece swings up and down. And the rear machine tool is driven to swing up and down. The rear-mounted machine tool can be conveniently adjusted to ascend or descend at any time according to requirements when an operator operates the agricultural machine, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a lifting mechanism and a rear-mounted implement. Background Art

[0002] Operators operate agricultural machinery to complete various farmland operations such as rotary tillage, loosening soil, and fertilization. When operating agricultural machinery (such as a micro-tillage machine), in order to prevent the rear implements used for tillage (such as a loosening harrow, a resistance tillage knife) from being damaged by friction with the ground, the rear implements need to be raised above the ground. When operating agricultural machinery for tillage, in order to ensure that the rear implements are at the required height at all times, the rear implements need to be able to move up and down at any time according to the tillage needs. Therefore, there is an urgent need for a lifting mechanism that can adjust the rear implements to rise or fall at any time. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, one of the purposes of the utility model is to provide a lifting mechanism that can facilitate operators to adjust the rear-mounted implements to rise or fall at any time according to needs when operating agricultural machinery, and has a wide range of applications.

[0004] The technical solution adopted by the utility model is as follows: a lifting mechanism, including a transmission component and a connecting member connected to a rear machine, the transmission component includes a transmission member, a moving member connected to both the transmission member and the connecting member, the transmission member is connected to a control component for controlling the rotation of the transmission member, when the transmission member rotates, the moving member moves axially along the transmission member, the connecting member swings up and down, and drives the rear machine to swing up and down.

[0005] Compared with the prior art, the beneficial effects of the present invention are:

[0006] The control component, transmission component, moving component and connecting component of the utility model cooperate with each other, and the transmission component, moving component and connecting component can be linked through the control component, so that the rear machine can swing up and down, and the position of the rear machine can be adjusted at any time according to needs, that is, the rear machine can be raised or lowered.

[0007] As a preferred embodiment of the present utility model, the control assembly includes a rocker arm, a support member for supporting and limiting the rocker arm, the support member is connected to a connecting member, the transmission assembly also includes a first limiting member limited by the support member, one end of the transmission member passes through the first limiting member and the moving member in sequence, when the rocker arm rotates, the transmission member rotates, the moving member moves axially along the transmission member, the connecting member swings up and down, and drives the rear machine to swing up and down.

[0008] In this solution, the operator holds one end of the rocker and makes a circular motion. Since the support member supports and limits the rocker, the position of the rocker is relatively fixed, and the rocker can rotate in a circle on the spot. When the hand makes a circular motion, the rocker is driven to rotate in a circle. Since the rocker is connected to the transmission member, the first limit member limits the support member. When the rocker rotates, the transmission member is driven to rotate in place. At this time, the moving member is connected to the connecting member, and the connecting member is connected to the supporting member. The supporting member provides support and limitation for the first limit member and the connecting member. When the transmission member rotates, the first limit member provides support and limitation for the transmission member. When the transmission member rotates in the counterclockwise direction, the moving member moves downward, and when the transmission member rotates in the clockwise direction, the moving member moves upward. While the moving member moves, the connecting member takes the connection point between the connecting member and the supporting member as the fulcrum and rotates vertically along the fulcrum, that is, it swings up and down with the moving member, thereby driving the rear-mounted machine to move up and down.

[0009] Beneficial effects: The rocker arm is convenient for operators to operate agricultural machinery. The rocker arm can be used to control the lifting and lowering of the rear-mounted implements at any time according to needs. The support member can provide support and limiting for the rocker arm, the first limit member and the connecting member, ensuring that the position of the rocker arm remains relatively fixed and can rotate circumferentially, ensuring that the position of the first limit member is relatively fixed, thereby ensuring that the position of the transmission member is relatively fixed, and also ensuring that one end of the connecting member can be used as a fulcrum, so that the connecting member can stably move along the axial direction of the transmission member; the rocker arm can drive the transmission member to rotate, and the first limit member, the moving member and the transmission member cooperate to ensure that the transmission member rotates in place while driving the moving member to move along the axial direction of the transmission member, thereby ensuring that the moving member drives the connecting member to lift and lower.

[0010] As a preferred embodiment of the present utility model, the transmission member and the moving member are threadedly connected.

[0011] Beneficial effect: When the transmission member rotates, it drives the moving member to move along the axial direction of the transmission member. Since the transmission member and the moving member are threadedly connected, when the transmission member stops rotating, the moving member is self-locked, and the positions of the transmission member and the moving member are relatively fixed.

[0012] As a preferred embodiment of the present utility model, the transmission member is a single-step shaft, the diameter of the upper end of the transmission member is smaller than the diameter of the lower end of the transmission member, the upper end of the transmission member is connected to the first limiting member, and the lower end of the transmission member is connected to the moving member, and the upper end of the transmission member is located at both ends of the first limiting member and is abutted against bearings and limiting rings that are abutted against each other and arranged in sequence, one of the limiting rings is detachably connected to the upper end of the transmission member, and the other limiting ring is located at the step of the transmission member and abuts against the lower end of the transmission member.

[0013] Beneficial effects: the transmission member is a single-step shaft, and the diameter of the upper end of the transmission member is smaller than the diameter of the lower end, so that the upper end of the transmission member can be limited by the first limit member through the bearing and the limit ring. Specifically, a limit ring is detachably connected to the upper end of the transmission member, the limit ring and the bearing abut against each other, and the bearing abuts against the first limit member, which is equivalent to the limit ring located at the upper end of the transmission member abutting against the first limit member through the limit ring and the bearing at the step of the transmission member. The transmission member is limited and can only rotate but cannot move up and down. A limit ring is detachably connected to the transmission member, which is convenient for replacing the transmission member, the limit ring and the bearing.

[0014] As a preferred embodiment of the present invention, the transmission assembly further comprises a protective cover for shielding the transmission member and the moving member.

[0015] Beneficial effect: The protective cover can prevent dirt and foreign objects from covering the transmission parts and affecting the coordinated use of the transmission parts and the moving parts.

[0016] As a preferred embodiment of the present utility model, the connecting member is provided with a plurality of connecting holes along the length direction of the connecting member, and one end of the moving member passes through the connecting hole.

[0017] Beneficial effects: A plurality of connecting holes can facilitate adjustment of the relative position of the moving part on the connecting part, thereby adjusting the swing amplitude of the connecting part, and has a wide range of applications.

[0018] As a preferred embodiment of the utility model, the rocker includes a first connecting rod, a second connecting rod and a handle located at both ends and on opposite sides of the first connecting rod, the second connecting rod and the handle are parallel to each other and vertically inclined, one end of the second connecting rod is detachably connected to the transmission member, the support member includes a second limiting member passing through both ends, one end of the second connecting rod passes through the second limiting member, and the outer wall of the rocker is in contact with the inner wall of the second limiting member.

[0019] Beneficial effect: The cooperation between the first connecting rod, the second connecting rod, the handle and the second limiter can ensure that when the second connecting rod is limited, the rocker can cooperate with the operator's hand to make a circular motion, that is, the first connecting rod makes a circumferential motion with the connection between the first connecting rod and the second connecting rod as the center point, thereby ensuring the circumferential rotation of the second connecting rod, driving the transmission part to rotate circumferentially.

[0020] As a preferred embodiment of the present utility model, the rocker further comprises a conversion member, two ends of the conversion member are respectively detachably connected to the second connecting rod and the transmission member, and the conversion member is in the shape of a hook.

[0021] Beneficial effect: When the axis of the second connecting rod intersects with the axis of the transmission member, if the second connecting rod is directly connected to the transmission member, when the rocker drives the transmission member to rotate, the stress is concentrated at the connection between the second connecting rod and the transmission member, and the connection between the second connecting rod and the transmission member is easy to break. When there is an adapter as an intermediate bridge and the adapter is in the shape of a hook, it can avoid the second connecting rod from being directly connected to the transmission member, which can increase the service life of the rocker and the transmission member and facilitate the disassembly and replacement of the adapter.

[0022] As a preferred embodiment of the present utility model, the first limiting member includes a first connecting column detachably connected to the supporting member and a first connecting ring rotatably connected to the transmission member, and the movable member includes a second connecting column detachably connected to the connecting member and a second connecting ring connected to the transmission member.

[0023] A second object of the present invention is to provide a rear-mounted implement including the lifting mechanism described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the lifting mechanism of the utility model;

[0025] Figure 2 This is a structural schematic diagram of the lifting mechanism of the utility model from another angle;

[0026] Figure 3 It is a partial structural diagram of the lifting mechanism of the utility model;

[0027] Figure 4 It is a schematic diagram of the structure at position A of the utility model;

[0028] Figure 5 This is a partial structural diagram of the lifting mechanism of the utility model from another angle;

[0029] Figure 6 It is a schematic diagram of the structure at position B of the utility model;

[0030] Figure 7 This is a partial structural diagram of the lifting mechanism of the utility model from another angle;

[0031] Figure 8 It is a schematic diagram of the structure at position C of the utility model. DETAILED DESCRIPTION

[0032] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0033] In the description of the present application, the terms "first", "second", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] The figure marks include: rocker 1, first connecting rod 101, second connecting rod 102, handle 103, adapter 104, first connecting part 1041, second connecting part 1042, third connecting part 1043, fourth connecting part 1044, support member 2, second limiting member 201, support column 202, support seat 203, first support rod 204, first limiting member 3, first connecting column 301, first connecting ring 302, moving member 4, second connecting column 401, second connecting ring 402, transmission member 5, bearing 6, limiting ring 7, connecting member 8, connecting hole 801, protective cover 9.

[0036] like Figure 1-8 As shown, the lifting mechanism includes a control component installed on the agricultural machinery body for controlling the rotation of the transmission component, a transmission component, and a connecting component 8 connected to the rear machine, such as Figure 1 and Figure 2 As shown, the control assembly includes a rocker 1 and a support member 2 for supporting and limiting the rocker 1, and the support member 2 is connected to the agricultural machinery body.

[0037] like Figure 1 As shown, in this embodiment, the rocker 1 includes a first connecting rod 101, a second connecting rod 102 located at both ends and on opposite sides of the first connecting rod 101, a handle 103 and an adapter 104. The second connecting rod 102 and the handle 103 are parallel to each other and vertically inclined. The upper end of the adapter 104 is detachably connected to the second connecting rod 102, and the adapter 104 is hook-shaped, such as a curved hook or a bent shape.

[0038] like Figure 4As shown, in this embodiment, the adapter 104 includes a first connecting portion 1041 that can be detachably connected to the second connecting rod 102 and is coaxial, a second connecting portion 1042 connected to the first connecting portion 1041, a third connecting portion 1043 that is unequally parallel to the first connecting portion 1041, and a fourth connecting portion 1044 that is perpendicular to and connected to the third connecting portion 1043. The first connecting portion 1041 is connected to the third connecting portion 1043 through the second connecting portion 1042. One end of the first connecting portion 1041 A sleeve is connected, the diameter of the sleeve is larger than the diameter of the second connecting rod 102, the sleeve is provided with a second through hole, the second connecting rod 102 is provided with a third through hole, the second connecting rod 102 extends into the sleeve and fits with the inner wall of the sleeve, the second through hole and the third through hole are opposite to each other, a third connecting column passing through the second through hole and the third through hole is provided between the sleeve and the second connecting rod 102, one end of the third connecting column abuts against the outer wall of the sleeve, and the other end is provided with a sixth through hole, the sixth through hole is connected with a limit pin, and the limit pin limits the sleeve and the second connecting rod.

[0039] The fourth connecting part 1044 is connected to the U-shaped fifth connecting part, and a hollow limiting column is fixedly connected to the bending part of the fifth connecting part. A first through hole is provided at one end of the fourth connecting part 1044, and one end of the fourth connecting part 1044 provided with the first through hole passes through the limiting column. The first through hole is connected to the limiting pin, and the limiting pin prevents the fourth connecting part from detaching from the limiting column. The fifth connecting part is provided with a fourth through hole at the vertical part.

[0040] like Figure 2 As shown, the support member 2 includes a second limit member 201 with two ends passing through, a support column 202 detachably connected to the agricultural machinery body, a support seat 203 for supporting the connecting member 8, and a first support rod 204 connected to the rocker 1, a U-shaped first limit frame is connected to the left side of the support column 202, and a U-shaped second limit frame is connected to the agricultural machinery body, and fourth through holes and fifth through holes are provided at intervals at the horizontal and vertical parts of the first limit frame and the horizontal and vertical parts of the second limit frame, the fourth through holes and the fifth through holes are opposite to each other, the horizontal part of the first limit frame is located in the second limit frame, the horizontal part of the first limit frame is fitted with the horizontal part of the second limit frame, and a pin passing through the fourth through hole and the fifth through hole is provided between the first limit frame and the second limit frame.

[0041] The first support rod 204 and the support seat 203 are respectively located at the upper and lower ends of the support column 202. The first support rod 204 is smoothly connected to the support column 202. The first support rod 204 and the support column 202 are perpendicular to each other. The first support rod 204 is provided with a second support rod connected to the support column 202. The second support rod can enhance the stability of the first support rod 204. The second limiting member 201 is fixedly connected to the first support rod 204. The second limiting member 201 is a sleeve. One end of the second connecting rod 102 passes through the second limiting member 201. The outer wall of the second connecting rod 102 fits with the inner wall of the second limiting member 201.

[0042] like Figure 3 and Figure 4 As shown, in this embodiment, the support seat 203 includes a symmetrically arranged support plate and a cylinder. The two support plates are located on both sides of the support column 202 and are fixedly connected to the support column 202. The cylinder is located between the upper ends of the two support plates. The cylinder is fixedly connected to the two support plates. The upper and lower ends of the two support plates are provided with a seventh through hole and an eighth through hole. The cylinder is opposite to the seventh through hole. One end of the connecting member 8 is located between the two support plates and is threadedly or pinned to the two support plates through the eighth through hole.

[0043] like Figure 4 As shown, the transmission assembly includes a first limit member 3 connected to the support member 2, a moving member 4 connected to the connecting member 8, and a transmission member 5 connected to the rocker 1. The first limit member 3 and the moving member 4 are both penetrated at both ends, and one end of the transmission member 5 passes through the first limit member 3 and the moving member 4 in sequence. When the rocker 1 rotates, the rocker 1 drives the transmission member 5 to rotate circumferentially, and the transmission member 5 rotates relative to the first limit member 3. The transmission member 5 drives the moving member 4 to move axially along the transmission member 5. The first limit member 3 is located obliquely above the moving member 4, so that the transmission member 5 is tilted to adapt to the operation of the operator, and the operator does not need to swing his arm excessively.

[0044] In this embodiment, the first limit member 3 is detachably connected to the support member 2, and the movable member 4 is detachably connected to the connecting member 8. The first limit member 3 includes a first connecting column 301 detachably connected to the support member 2 and a first connecting ring 302 rotatably connected to the transmission member 5. One end of the first connecting column 301 passes through the seventh through hole and the cylinder in sequence, and the other end is fixedly connected to the first connecting ring 302. The first connecting column 301 passes through one end of the support plate and is provided with a ninth through hole. The first connecting column 301 is sleeved with a limit cylinder with notches arranged at circumferential intervals. The limit cylinder abuts against the support plate. The first connecting column 301 is provided with a limit pin passing through the ninth through hole, and both ends of the limit pin are located in the notch on the limit cylinder.

[0045] The movable part 4 includes a second connecting column 401 detachably connected to the connecting part 8 and a second connecting ring 402 connected to the transmission part 5. One end of the second connecting column 401 passes through the connecting part 8, and the other end is fixedly connected to the second connecting ring 402. The second connecting column 401 is provided with a tenth through hole, and the second connecting column 401 is sleeved with a limiting cylinder, which abuts against the connecting part 8. The second connecting column 401 is provided with a limiting pin passing through the tenth through hole, and both ends of the limiting pin are located in the notch on the limiting cylinder.

[0046] like Figure 5 and Figure 6As shown, the transmission member 5 is a single-step shaft, the axis of the second connecting rod 102 intersects with the axis of the transmission member 5, the lower end of the adapter 104 is detachably connected to the transmission member 5, the upper end diameter of the transmission member 5 is smaller than the lower end diameter of the transmission member 5, the upper end of the transmission member 5 is connected to the first limiting member 3, and the lower end of the transmission member 5 is threadedly connected to the moving member 4. The upper end of the transmission member 5 is located at both ends of the first limiting member 3, and there are bearings 6 and limiting rings 7 that are abutted against each other and arranged in sequence. One limiting ring 7 is detachably connected to the upper end of the transmission member 5, and the other limiting ring 7 is located at the step of the transmission member 5 and abuts against the lower end of the transmission member 5.

[0047] In this embodiment, the upper end of the transmission member 5 is provided with an eleventh through hole and a twelfth through hole in sequence, the fifth connecting portion is threadedly connected to the transmission member 5 through the fourth through hole and the eleventh through hole, the limiting ring 7 located at the upper end of the transmission member 5 is provided with a thirteenth through hole that passes through the twelfth through hole, and the limiting ring 7 is threadedly connected to the transmission member 5 through the twelfth through hole and the thirteenth through hole.

[0048] In this embodiment, the lower end of the transmission member 5 is a screw rod, and the moving member 4 and the transmission member 5 are slidably matched.

[0049] like Figure 7 and Figure 8 As shown, in this embodiment, the first connecting column 301 on the first limiting member 3 is clamped with a protective cover 9 for shielding the transmission member, and the protective cover 9 includes a first shielding plate, and a second shielding plate which is respectively connected to the three end faces of the first shielding plate and on the same side, wherein the two second shielding plates are both provided with notches, and are respectively clamped with the upper end of the transmission member 5 and the first connecting column 301, and the first shielding plate is detachably connected to the first connecting ring 302.

[0050] In this embodiment, the connecting member 8 is provided with a plurality of connecting holes 801 along the length direction of the connecting member 8 , and one end of the moving member 4 passes through the connecting hole 801 to be connected to the connecting member 8 . In this embodiment, there are two connecting holes 801 in total.

[0051] The rear implement includes the lifting mechanism mentioned above.

[0052] Specific operation steps for lifting rear implements:

[0053] When the operator operates the agricultural machinery, he holds the handle 103 and makes a circular motion. When the hand makes a clockwise circular motion, the hand drives the second connecting rod 102 to rotate clockwise through the handle 103. At this time, the second connecting rod 102 passes through the second limiting member 201. The second limiting member 201 provides support and limitation for the second connecting rod 102. The second connecting rod 102 is rotatably connected with the second limiting member 201. When the second connecting rod 102 rotates, it drives the adapter 104 to rotate. When the adapter 104 rotates, it drives the transmission member 5 to rotate clockwise. At this time, the upper end of the transmission member 5 idles relative to the first limiting member 3, and the lower end of the transmission member 5 is screwed with the moving member 4. The transmission member 5 is connected by the first limit member 3, and the position of the transmission member 5 remains unchanged. At this time, the transmission member 5 rotates to drive the moving member 4 to move upward along the axial direction of the transmission member 5. One end of the connecting member 8 is connected to the support seat 203, and the other end is connected to the transmission member 5 through the moving member 4. When the moving member 4 moves upward, the moving member 4 drives the connecting member 8 to rotate vertically with the connection between the connecting member 8 and the support seat 203 as the fulcrum, and the outer end of the connecting member 8 is raised, that is, it rises. When the hand stops drawing circles, the moving member 4 is threadedly connected to the transmission member 5, and the moving member 4 self-locks and remains motionless, thereby ensuring that the position of the connecting member 8 remains stationary, that is, ensuring that the rear-mounted machine remains stationary after rising;

[0054] When the rear tool needs to be moved downward, the handle 103 is held by hand and moves in a counterclockwise circle. For the specific process, refer to the above-described steps.

[0055] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A lifting mechanism, characterized in that: It includes a transmission component and a connecting member connected to a rear machine. The transmission component includes a transmission member and a moving member connected to both the transmission member and the connecting member. The transmission member is connected to a control component for controlling the rotation of the transmission member. When the transmission member rotates, the moving member moves axially along the transmission member, the connecting member swings up and down, and drives the rear machine to swing up and down.

2. The lifting mechanism according to claim 1, characterized in that: The control assembly includes a rocker, a support member for supporting and limiting the rocker, the support member is connected to a connecting member, and the transmission assembly also includes a first limiting member connected to the support member, one end of the transmission member passes through the first limiting member and the moving member in sequence, and when the rocker rotates, the transmission member rotates.

3. The lifting mechanism according to claim 1, characterized in that: The transmission member and the moving member are threadedly connected.

4. The lifting mechanism according to claim 2, characterized in that: The transmission member is a single-step shaft, the diameter of the upper end of the transmission member is smaller than the diameter of the lower end of the transmission member, the upper end of the transmission member is connected to the first limiting member, and the lower end of the transmission member is connected to the moving member, and the upper end of the transmission member is located at both ends of the first limiting member and is abutted against bearings and limiting rings that are abutted against each other and arranged in sequence, one limiting ring is detachably connected to the upper end of the transmission member, and the other limiting ring is located at the step of the transmission member and abuts against the lower end of the transmission member.

5. The lifting mechanism according to claim 1, characterized in that: The transmission assembly also includes a protective cover for shielding the transmission member and the moving member.

6. The lifting mechanism according to claim 1, characterized in that: The connecting member is provided with a plurality of connecting holes along the length direction of the connecting member, and one end of the moving member passes through the connecting hole.

7. The lifting mechanism according to claim 2, characterized in that: The rocker includes a first connecting rod, a second connecting rod and a handle located at both ends and on opposite sides of the first connecting rod, the second connecting rod and the handle are parallel to each other and vertically inclined, one end of the second connecting rod is detachably connected to the transmission member, the support member includes a second limiting member with two ends passing through, one end of the second connecting rod passes through the second limiting member, and the outer wall of the rocker is in contact with the inner wall of the second limiting member.

8. The lifting mechanism according to claim 7, characterized in that: The rocker also includes a conversion member, two ends of which are detachably connected to the second connecting rod and the transmission member respectively, and the conversion member is hook-shaped.

9. The lifting mechanism according to claim 2, characterized in that: The first limiting member includes a first connecting column detachably connected to the supporting member and a first connecting ring rotatably connected to the transmission member, and the moving member includes a second connecting column detachably connected to the connecting member and a second connecting ring connected to the transmission member.

10. The rear-mounted implement is characterized by: It comprises the lifting mechanism described in any one of claims 1-9.

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