CN110626416B - Position-adjustable handle rod and agricultural mechanical steering handle - Google Patents
Position-adjustable handle rod and agricultural mechanical steering handle Download PDFInfo
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- CN110626416B CN110626416B CN201911162931.0A CN201911162931A CN110626416B CN 110626416 B CN110626416 B CN 110626416B CN 201911162931 A CN201911162931 A CN 201911162931A CN 110626416 B CN110626416 B CN 110626416B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/12—Hand levers
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Abstract
The invention relates to a position-adjustable handle rod and an agricultural mechanical steering handle, wherein the handle rod comprises a handle rod welding part, a limiting bracket, a rotating support, a pull rod and a limiting pin, the lower end of the handle rod welding part is hinged on the rotating support, the limiting bracket is fixed in the middle of the handle rod welding part, a guide groove is formed in the limiting bracket, the pull rod is movably arranged on the limiting bracket and is welded with the handle rod in parallel, the lower end of the pull rod is provided with the limiting pin, and the limiting pin is elastically connected to the limiting bracket and is positioned in the guide groove; the rotary support is provided with a plurality of limiting grooves which are sequentially arranged side by side, the limiting support is partially overlapped with the rotary support, so that the guide groove can be partially overlapped with any one limiting groove in the process that the handle rod is welded and rotates relative to the rotary support; when the handle lever is switched, the pull rod is pulled to move the limiting pin out of one limiting groove, the handle lever is rotated to be welded to the other position, the guide groove corresponds to the other limiting groove, and the limiting pin is released and enters the other limiting groove.
Description
Technical Field
The invention relates to the technical field of agricultural motor vehicles, in particular to a position-adjustable handle rod and an agricultural mechanical steering handle.
Background
At present, agricultural motor vehicles (such as tracked motor vehicles) on the market are provided with cab type steering lifting handles which are positioned on a control console on the right side of a cab, the angle of a control handle rod is fixed, the requirement of different crowds on the comfort of the position of the control handle cannot be met, the handle is bent to exceed the control console after the assembly of a control assembly is completed, a driver is easy to touch when entering and exiting a cab passageway, misoperation is generated, and potential safety hazards exist.
Disclosure of Invention
The invention aims to solve the technical problems that the position of a handle rod on an operating board of a cab of the existing agricultural motor vehicle cannot be adjusted, the operating requirements of a driver on different positions cannot be met, and the handle rod is easy to collide when entering and exiting the aisle of the cab, generates misoperation and the like.
The technical scheme for solving the technical problems is as follows: a position-adjustable handle rod comprises a handle rod welding part, a limiting support, a rotating support, a pull rod and a limiting pin, wherein the lower end of the handle rod welding part is hinged to the rotating support; the rotary support is provided with a plurality of limiting grooves which are sequentially arranged side by side, the limiting support is partially overlapped with the rotary support, so that the guide groove can be partially overlapped with any one limiting groove in the process that the handle rod is welded and rotates relative to the rotary support;
when the position of the handle rod is switched, the pull rod is pulled to enable the limiting pin to move out of one limiting groove, the handle rod is rotated to be welded to the other position, the guide groove corresponds to the other limiting groove, and the limiting pin is released and enters the other limiting groove.
The invention has the beneficial effects that: on the basis of not damaging the original structure of the handle rod of the agricultural motor vehicle, the invention is additionally provided with the limiting bracket and the rotating bracket, and the rotation limiting of the handle rod welding is realized by utilizing the matching of the pull rod and the limiting pin which are welded with the handle rod and arranged side by side, so that the switching of different angles of the handle rod is realized, and the influence on the internal control structure of the handle rod is avoided; and handle bar seam arranges side by side with the pull rod, makes things convenient for one-hand operation, does not influence navigating mate normal operating, does not hinder handle bar seam inside arrangement electrical apparatus pencil etc. moreover. In addition, when the handle is operated on the agricultural mechanical cab, the handle bar needs to have enough strength and rigidity, so that the handle bar is prevented from being broken or bent when being operated front, back, left and right, and the position adjusting requirements can be met by adopting structures such as a limiting support, a rotating support and the like, and the operating requirements can be met by the whole adjusting mechanism and the strength of the handle bar.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, spacing support is the type of falling U structure, the handle bar seam runs through the roof setting of spacing support, the guide way has been seted up respectively on the both sides wall of spacing support, the spacer pin is worn to establish in two guide ways.
The beneficial effect of adopting the further scheme is that: the limiting support is of a U-shaped structure, so that the switching process of the limiting pin is more stable and reliable, and the rocking in other directions is avoided.
Furthermore, the upper end of the pull rod penetrates out of the top wall of the limiting support, the limiting pin is connected with the top wall of the inverted U-shaped structure through an elastic piece, and the elastic piece is sleeved on the pull rod.
The beneficial effect of adopting the further scheme is that: the upper end of the pull rod penetrates out of the top wall of the limiting support, so that a driver can lift the pull rod by extending a finger while operating the handle rod to be welded, the whole arm does not have redundant actions, single-hand operation is more rapid and comfortable, and the handle rod welding rotating operation and the pull rod operation can be synchronously performed; in addition, the elastic piece is sleeved on the pull rod, so that the elastic acting force acting on the limiting pin is more uniform and stable, and the process of moving the limiting pin into the limiting groove is more stable.
Furthermore, a guide sleeve is fixed on the upper surface of the top wall of the limiting support, the guide sleeve and the handle rod are welded in parallel, and the upper end of the pull rod penetrates out of the guide sleeve.
The beneficial effect of adopting the further scheme is that: the setting of uide bushing can provide effectual direction for the pull rod, and then makes the motion stroke of spacer pin more steady, can not take place the skew.
Furthermore, a through hole is formed in the middle of the limiting pin, the lower end of the pull rod penetrates through the through hole, nuts are respectively connected to the portions, located above and below the limiting pin, of the pull rod in a threaded mode, and the pull rod and the limiting pin are locked through the nuts.
The beneficial effect of adopting the further scheme is that: utilize the nut to lock the spacer pin on the pull rod, can conveniently change different spacer pins according to the spacing groove of difference, perhaps weld according to the handle bar of difference and change the pull rod of different length or structure to adapt to different demands.
Further, the rotary support is of a U-shaped structure, the lower end of the handle rod welded is located between two side walls of the U-shaped structure and hinged to two side walls of the U-shaped structure, and a plurality of limiting grooves with upper ends open are formed in the upper ends of the two side walls of the U-shaped structure respectively.
The beneficial effect of adopting the further scheme is that: the rotary support adopts a U-shaped structure, can be matched with the limiting support, and hides the structures such as the elastic part pull rod in the rotary support and the limiting support, thereby avoiding influencing the switching process and ensuring that the whole switching stroke is more stable and reliable.
Furthermore, the upper end surface of the transition part between two adjacent limiting grooves is of a convex arc structure; and the outer edges of the two guide grooves at two ends are higher than the transition part in the limiting grooves which are sequentially arranged side by side.
The beneficial effect of adopting the further scheme is that: the upper end face of the transition part between two adjacent limiting grooves is set to be of a convex arc structure, so that the limiting pin can be conveniently switched between the two adjacent limiting grooves without resistance, and the limiting pin can be prevented from being completely separated from the limiting grooves of the rotating support.
Further, the spacer pin includes that installation department and two symmetries set up the stress part of installation department both sides, stress part with spacing inslot lateral wall structure adaptation, stress part with two sides of spacing inslot cell wall adaptation are respectively including stress surface and the spigot surface of arranging from top to bottom, every on the side stress surface is vertical to be arranged, every spigot surface slope on the side is arranged and is made stress part lower extreme forms the closed angle structure.
The beneficial effect of adopting the further scheme is that: the sharp-angled structure formed by the two guide surfaces can be conveniently cut into the guide groove of the rotary support.
Further, handle pole seam lower extreme is equipped with first axle sleeve, the nylon cover is installed respectively at first axle sleeve both ends, install the round pin axle on the rotatory support, the round pin axle runs through the nylon cover with first axle sleeve sets up.
The beneficial effect of adopting the further scheme is that: the nylon sleeve is welded with the handle rod and the rotating support is in interference fit, so that the handle rod can be flexibly welded and rotated without clamping stagnation, and the adjusting mechanism can be controlled and firmly and reliably operated.
An agricultural mechanical steering handle comprises a fixed seat, a rotating seat welded together and a handle rod, wherein a second shaft sleeve vertically arranged with the handle rod welded together is installed at the bottom of the rotating support seat; the fixed seat is provided with a first rotating shaft;
the rotating seat welded joint comprises a third shaft sleeve, a connecting rod and a second rotating shaft, the third shaft sleeve and the second rotating shaft are respectively and vertically connected to the connecting rod, and the third shaft sleeve and the second rotating shaft are staggered and vertically arranged; the second shaft sleeve is sleeved on the second rotating shaft, and the third shaft sleeve is sleeved on the first rotating shaft.
The invention has the beneficial effects that: the steering handle can switch different operation angles according to the requirements of a driver on the premise of not influencing the original steering function and not changing the original steering handle structure, so that the requirement of different people on the comfort of the position of the control handle can be met.
Drawings
FIG. 1 is a schematic view of a conventional steering handle;
FIG. 2 is a schematic view of an exploded structure of a conventional steering handle;
FIG. 3 is a perspective view of the steering handle of the present invention;
FIG. 4 is a schematic view of the steering handle of the present invention switching between position one and position two;
FIG. 5 is a perspective exploded view of the steering handle of the present invention;
FIG. 6 is a schematic perspective view of a rotary support according to the present invention;
FIG. 7 is a schematic side view of the rotatable mount of the present invention;
FIG. 8 is a schematic perspective view of a spacing pin according to the present invention;
FIG. 9 is a schematic cross-sectional view of a spacing pin according to the present invention;
FIG. 10 is a schematic view of the structure of the rotary support and the limit bracket of the present invention;
FIG. 11 is a side view of the steering handle of the present invention;
fig. 12 is a schematic view of the cross-sectional structure D-D in fig. 11.
In the drawings, the components represented by the respective reference numerals are listed below:
1. welding handle rods; 11. a first bushing; 12. a nylon sleeve;
2. a limiting bracket; 21. a guide groove; 22. closing the guide channel;
3. rotating the support; 31. a limiting groove; 32. a circular arc structure; 33. a pin shaft; 34. outside;
4. a pull rod; 42. a nut;
5. a spacing pin; 51. a through hole; 52. an installation part; 53. a force receiving portion; 54. a stress surface; 55. a guide surface;
6. an elastic member; 7. a guide sleeve;
100. a fixed seat; 200. welding the rotating seat; 300. a second shaft sleeve; 400. a first rotating shaft; 500. a third shaft sleeve; 600. a connecting rod; 700. a second rotating shaft.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
Example 1
Fig. 1 and 2 are schematic structural views of a handle bar of a conventional agricultural motor vehicle, which can realize front-back and left-right steering.
As shown in fig. 3 to 12, the position-adjustable handle lever of this embodiment includes a handle lever welding part 1, a limiting bracket 2, a rotating support 3, a pull rod 4 and a limiting pin 5, wherein a lower end of the handle lever welding part 1 is hinged to the rotating support 3, the limiting bracket 2 is fixed in a middle of the handle lever welding part 1, a guide groove 21 is formed in the limiting bracket 2, the pull rod 4 is movably disposed on the limiting bracket 2 and arranged side by side with the handle lever welding part 1, the lower end of the pull rod 4 is provided with the limiting pin 5, and the limiting pin 5 is elastically connected to the limiting bracket 2 and located in the guide groove 21; the rotary support 3 is provided with a plurality of limiting grooves 31 which are sequentially arranged side by side, the limiting support 2 is partially overlapped with the rotary support 3, so that the guide groove 21 can be partially overlapped with any one limiting groove 31 in the process that the handle rod welding 1 rotates relative to the rotary support 3;
as shown in fig. 4, when the position of the handle lever is switched, the pull rod 4 is pulled to move the limit pin 5 out of one of the limit grooves 31, the handle lever welding 1 is rotated to another position, the guide groove 21 corresponds to the other limit groove 31, and the limit pin 5 is released and enters the other limit groove 31.
According to the embodiment, on the basis of not damaging the original structure of the handle rod of the agricultural motor vehicle, the limiting support and the rotating support are additionally arranged, and the handle rod is matched with the limiting pin through the pull rod and the limiting pin which are welded with the handle rod and arranged side by side, so that the handle rod is limited in rotation according to the welding, the switching of different angles of the handle rod is realized, and the influence on the internal control structure of the handle rod is avoided; and handle bar seam arranges side by side with the pull rod, makes things convenient for one-hand operation, does not influence navigating mate normal operating, does not hinder handle bar seam inside arrangement electrical apparatus pencil etc. moreover. In addition, when the handle is operated on the agricultural mechanical cab, the handle bar needs to have enough strength and rigidity, so that the handle bar is prevented from being broken or bent when being operated front, back, left and right, and the position adjusting requirements can be met by adopting structures such as a limiting support, a rotating support and the like, and the operating requirements can be met by the whole adjusting mechanism and the strength of the handle bar.
A preferred scheme of this embodiment is, as shown in fig. 5-7, the limiting support 2 is an inverted U-shaped structure, the handle bar seam 1 penetrates through the top wall of the limiting support 2, guide grooves 21 are respectively formed in two side walls of the limiting support 2, and the limiting pin 5 penetrates through the two guide grooves 21. The limiting support is of a U-shaped structure, so that the switching process of the limiting pin is more stable and reliable, and the rocking in other directions is avoided.
Specifically, as shown in fig. 3 to 12, the upper end of the pull rod 4 penetrates through the top wall of the limiting bracket 2, the limiting pin 5 is connected with the top wall of the inverted U-shaped structure through an elastic member 6, and the elastic member 6 is sleeved on the pull rod 4. The elastic member 6 is preferably a compression spring. The upper end of the pull rod penetrates out of the top wall of the limiting support, so that a driver can lift the pull rod by extending a finger while operating the handle rod to be welded, the whole arm does not have redundant actions, single-hand operation is more rapid and comfortable, and the handle rod welding rotating operation and the pull rod operation can be synchronously performed; in addition, the elastic piece is sleeved on the pull rod, so that the elastic acting force acting on the limiting pin is more uniform and stable, and the process of moving the limiting pin into the limiting groove is more stable.
As shown in fig. 12, a pressure spring is assembled on the inner side surface of the top wall of the limiting support 2 and is used for bearing the elastic force of the pressure spring, the lifting force of a pull rod needs to overcome the elastic force of the pressure spring, the lifting force is less than 60N, and the operation hand feeling is good; the two side walls of the limiting bracket 2 are symmetrically arranged, and the guide groove 21 on the limiting bracket is matched with the limiting groove 31 on the rotating support 3 for use, so that the motion of the limiting pin 5 in the lifting direction is stable; the width of the limiting groove 31 is matched with the width of the limiting pin 5, so that the limiting pin 5 can be attached to the inner wall surface of the limiting groove 31, the movement idle stroke of the mechanism is eliminated, and meanwhile, the guide grooves 21 on the two side walls of the limiting support 2 are symmetrically distributed, so that the stress of the limiting support 2 is uniform and stable; meanwhile, the top surface of the guide groove 21 is the highest surface for lifting the limit pin 5, and the top surface of the limit groove 31 is designed in the compression stroke of the pressure spring, so that the pressure spring is protected from being damaged due to excessive force in the use process.
As shown in fig. 3-12, a guide sleeve 7 is fixed on the upper surface of the top wall of the limiting bracket 2, the guide sleeve 7 is arranged in parallel with the handle bar welding part 1, and the upper end of the pull rod 4 penetrates out of the guide sleeve 7. The setting of uide bushing can provide effectual direction for the pull rod, and then makes the motion stroke of spacer pin more steady, can not take place the skew.
As shown in fig. 8, a through hole 51 is formed in the middle of the limit pin 5, the lower end of the pull rod 4 passes through the through hole 51, nuts 42 are respectively connected to the portions of the pull rod 4 above and below the limit pin 5 through threads, and the pull rod 4 and the limit pin 5 are locked by the nuts 42. Wherein, the nut 42 below the limit pin 5 is flush with the bottom end of the pull rod 4 or the pull rod 4 slightly exceeds the nut below the limit pin 5 by 2-3 thread pitches. Utilize the nut to lock the spacer pin on the pull rod, can conveniently change different spacer pins according to the spacing groove of difference, perhaps weld according to the handle bar of difference and change the pull rod of different length or structure to adapt to different demands.
As shown in fig. 6, the rotating support 3 of this embodiment is a U-shaped structure, the lower end of the handle rod welded 1 is located between the two side walls of the U-shaped structure and hinged to the two side walls of the U-shaped structure, and the upper ends of the two side walls of the U-shaped structure are respectively provided with a plurality of limiting grooves 31 with upper ends open. The rotary support adopts a U-shaped structure, can be matched with the limiting support, and hides the structures such as the elastic part pull rod in the rotary support and the limiting support, thereby avoiding influencing the switching process and ensuring that the whole switching stroke is more stable and reliable.
As shown in fig. 6 and 7, the upper end surface of the transition part between two adjacent limiting grooves 31 is an outward convex arc structure 32; the outer edges 34 of two guide grooves 21 at two ends of a plurality of limiting grooves 31 which are arranged side by side in sequence are higher than the height of the transition part. The upper end face of the transition part between two adjacent limiting grooves is set to be of a convex arc structure, so that the limiting pin can be conveniently switched between the two adjacent limiting grooves without resistance, and the limiting pin can be prevented from being completely separated from the limiting grooves of the rotating support.
As shown in fig. 8 and 9, the limit pin 5 of this embodiment includes a mounting portion 52 and two stress portions 53 symmetrically disposed on two sides of the mounting portion 52, where the stress portions 53 are adapted to the inner sidewall structure of the limit slot 31, two sides of the stress portions 53 adapted to the slot wall of the limit slot 31 respectively include a stress surface 54 and a guide surface 55 disposed up and down, the stress surface 54 on each side is disposed vertically, and the guide surface 55 on each side is disposed obliquely so that the lower end of the stress portion 53 forms a sharp corner structure. The pointed configuration of the two guide surfaces 55 allows them to be easily cut into the guide grooves 21 of the rotatable support 3. Of course, the pointed structures described herein need not be pointed, but may be necked-like structures as shown in FIG. 9. The stress surface is consistent with the normal directions of the guide groove and the limiting groove, so that no component force exists in the motion directions of the limiting pin in the limiting groove and the guide groove, and the handle rod can transmit 100% of force when receiving front and back operating force. The distance between the two stress surfaces on the limit pin is consistent with the widths of the limit groove and the guide groove, and the limit pin can be aligned with the limit groove and the guide groove, so that the idle movement stroke of the mechanism is eliminated. And the stress parts of the limiting pin are consistent in structure and symmetrical relative to the middle part, so that the stress of the limiting pin is more uniform and stable.
As shown in fig. 5, the lower end of the handle rod welded 1 is provided with a first shaft sleeve 11, two ends of the first shaft sleeve 11 are respectively provided with a nylon sleeve 12, the rotating support 3 is provided with a pin shaft 33, and the pin shaft 33 penetrates through the nylon sleeve 12 and the first shaft sleeve 11. The nylon sleeve is welded with the handle rod and the rotating support is in interference fit, so that the handle rod can be flexibly welded and rotated without clamping stagnation, and the adjusting mechanism can be controlled and firmly and reliably operated.
As shown in fig. 3 to 12, a specific scheme of this embodiment is that two side walls of the rotating support 3 are respectively provided with two limiting grooves 31, which are a first limiting groove and a second limiting groove, the opening direction of the first limiting groove faces vertically upward, the second limiting groove is obliquely arranged and the opening direction is also obliquely arranged, a groove wall of the first limiting groove, which is far away from the second limiting groove, is an outer edge 34, a groove wall of the second limiting groove, which is far away from the first limiting groove, is an outer edge 34, and the outer edge 34 of the first limiting groove and the outer edge 34 of the second limiting groove are both higher than the height of the arc structure 32, so that the spacing pin is prevented from coming off from the limiting grooves.
The position adjustment process of the handle lever in this embodiment is, as shown in fig. 3, the handle lever soldering 1 is located at the first position, and is not subjected to an external force, and at this time, the limit pin 5 is located at the bottom of the limit groove on the rotating support 3 under the action of the pressure spring, so that the handle lever soldering 1 and the rotating support 3 are tightly connected together; as shown in fig. 3, the handle bar seam 1 is arranged at the first position, the pull rod 4 is lifted upwards by hand, the limit pin 5 is driven by the pull rod 4 to move upwards to the top of the guide groove 21 of the limit bracket 2 on the handle bar seam 1, the limit pin 5 is separated from the limit groove one on the rotary support 3, and at the moment, the handle bar seam 1 is separated from the rotary support 3, so that the back-and-forth movement can be realized; at the first position shown in fig. 4, forward thrust is applied to the handle rod welding part 1 to obtain a second position shown in fig. 4, at the moment, the handle rod welding part 1 is arranged at the second position, and the limiting pin 5 is positioned at the top of the guide groove 21 of the upper limiting bracket 2 of the handle rod welding part 1 under the driving of the pull rod 4; when the handle lever is welded to be 1 and is arranged in position two, the pulling force on the pull rod 4 is removed, the limiting pin 5 and the pull rod 4 move downwards under the action of the pressure spring and the self gravity, the limiting pin 5 is finally arranged at the bottom of the limiting groove of the rotary support 3, the handle lever is welded to be 1 and the rotary support 3 are tightly connected together, and the switching of the position one and the position two of the handle lever is realized. On the contrary, the position two can be switched to the position one, so that the whole handle rod can be freely switched between the position one and the position two, and the requirements of different crowds or different driving postures on different operation positions can be met by adjusting the position of the handle rod.
The limiting pin of the embodiment can only move in the closed guide channel 22 formed after the limiting bracket guide groove and the rotating support limiting groove are overlapped, and the position switching can be carried out when the lifting height of the limiting pin is higher than the height of the arc structure of the rotating support. Use handle bar seam to be in position one as an example, under pressure spring elastic force effect, the spacer pin is tightly in a spacing groove least significant end of rotating support, and the height L of biggest promotion is the distance of spacer pin upper surface to spacing support guide way top surface, and the critical height e that promotes that satisfies handle bar seam and carry out the position and switch is the position of the nodical with the circular arc structure of spacer pin bottommost face to rotating support spacing groove one, and e = b + d promptly, realizes that the condition that handle bar seam position switches does: l is more than e.
In order to ensure that the welding positions of the handle levers are switched in place, the handle levers are required to reach the specified positions in a welding mode, and the limiting pins are required to be limited; the outer edge of the guide groove of the rotary support is required to be long to prevent the limiting pin from falling off when the maximum lifting height L is reached, and the height of the stress surface of the limiting pin is required to be larger than the gap difference between the top surface of the outer edge of the limiting groove of the rotary support and the top surface of the guide groove of the limiting support, namely c is larger than a. In addition, in order to ensure the service life of the pressure spring, the maximum lifting height of the limiting pin is smaller than the compression stroke P of the pressure spring, namely L is smaller than P.
Therefore, the position switching of the realizing mechanism satisfies the condition: l is more than e; the conditions for ensuring that the handle lever is only switched between the first position and the second position are as follows: c is greater than a.
When the handle lever of this embodiment is welded and is being carried out position control, the front and back handling process atress analysis: the limiting pin stress surface, the limiting bracket guide groove stress surface and the rotating support limiting groove stress surface form a complete matching structure which is the most important matching relation in the whole mechanism; during the fore-aft steering, the force transmission target of the whole mechanism: handle bar welding → spacing pin → rotary support, finally transferring to rotary support welding to realize the front and back movement of the whole control mechanism; force relationship: before (after) = before (after) F' = before (after) F ". Because the force bearing surface of the guide groove of the limiting support and the force bearing surface of the limiting groove of the rotating support are parallel and flush with the force bearing surface of the limiting pin, the idle stroke of the mechanism can be eliminated, the three surfaces are parallel to the applied force direction, the operating force has no component force to the motion direction of the limiting pin (namely the slotting direction of the limiting groove), the phenomenon of up-and-down movement of the limiting pin cannot occur, and the force transmission is stable. Meanwhile, two ends of the mechanism are respectively provided with a limiting pin stress surface and two limiting groove stress surface matching structures which are symmetrically distributed, the transmission of the mechanism force is only limited in each matching structure, and the stress is equally distributed, so that the stress of a pull rod is avoided, and the whole mechanism is firmer and more reliable.
Example 2
As shown in fig. 3-12, the steering handle of agricultural machinery of this embodiment includes a fixed seat 100, a rotating seat seam 200 and the handle bar, and a second sleeve 300 arranged perpendicular to the handle bar seam 1 is installed at the bottom of the rotating support 3; the fixed seat 100 is provided with a first rotating shaft 400; the rotary seat welded joint 200 comprises a third shaft sleeve 500, a connecting rod 600 and a second rotating shaft 700, wherein the third shaft sleeve 500 and the second rotating shaft 700 are respectively vertically connected to the connecting rod 600, and the third shaft sleeve 500 and the second rotating shaft 700 are staggered and vertically arranged; the second shaft sleeve 300 is sleeved on the second rotating shaft 700, and the third shaft sleeve 500 is sleeved on the first rotating shaft 400.
The steering handle of this embodiment can not influence original function, not change under the prerequisite of original steering handle structural strength, can switch different operating angle according to driver's demand to adapt to different crowds to the demand of steering handle position travelling comfort.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (7)
1. An agricultural mechanical steering handle is characterized by comprising a fixed seat, a rotating seat welding part and a position-adjustable handle rod, wherein the handle rod comprises a handle rod welding part, a limiting bracket, a rotating support, a pull rod and a limiting pin, and a second shaft sleeve vertically arranged with the handle rod welding part is arranged at the bottom of the rotating support; the fixed seat is provided with a first rotating shaft; the rotating seat welded joint comprises a third shaft sleeve, a connecting rod and a second rotating shaft, the third shaft sleeve and the second rotating shaft are respectively and vertically connected to the connecting rod, and the third shaft sleeve and the second rotating shaft are staggered and vertically arranged; the second shaft sleeve is sleeved on the second rotating shaft, and the third shaft sleeve is sleeved on the first rotating shaft;
the lower end of the handle rod welding part is hinged to the rotary support, the limiting support is fixed in the middle of the handle rod welding part, a guide groove is formed in the limiting support, the pull rod is movably arranged on the limiting support and is welded with the handle rod in parallel, a limiting pin is arranged at the lower end of the pull rod, and the limiting pin is elastically connected to the limiting support and is located in the guide groove; the rotary support is provided with a plurality of limiting grooves which are sequentially arranged side by side, the limiting support is partially overlapped with the rotary support, so that the guide groove can be partially overlapped with any one limiting groove in the process that the handle rod is welded and rotates relative to the rotary support; the limiting bracket is of an inverted U-shaped structure, the handle rod is welded to penetrate through the top wall of the limiting bracket, guide grooves are formed in two side walls of the limiting bracket respectively, and the limiting pin penetrates through the two guide grooves; the rotating support is of a U-shaped structure, the lower end of the handle rod welded is located between two side walls of the U-shaped structure and hinged with the two side walls of the U-shaped structure, and a plurality of limiting grooves with openings at the upper ends are formed in the upper ends of the two side walls of the U-shaped structure respectively;
when the position of the handle rod is switched, the pull rod is pulled to enable the limiting pin to move out of one limiting groove, the handle rod is rotated to be welded to the other position, the guide groove corresponds to the other limiting groove, and the limiting pin is released and enters the other limiting groove.
2. The agricultural mechanical steering handle according to claim 1, wherein the upper end of the pull rod penetrates out of the top wall of the limiting bracket, the limiting pin is connected with the top wall of the inverted U-shaped structure through an elastic piece, and the elastic piece is sleeved on the pull rod.
3. The agricultural mechanical steering handle according to claim 2, wherein a guide sleeve is fixed on the upper surface of the top wall of the limiting bracket, the guide sleeve and the handle rod are welded and arranged in parallel, and the upper end of the pull rod penetrates out of the guide sleeve.
4. The agricultural mechanical steering handle according to claim 2, wherein a through hole is formed in the middle of the limit pin, the lower end of the pull rod penetrates through the through hole, nuts are respectively connected to the portions, located above and below the limit pin, of the pull rod in a threaded manner, and the pull rod and the limit pin are locked by the nuts.
5. An agricultural mechanical steering handle according to any one of claims 1 to 4, wherein the upper end surface of the transition part between two adjacent limiting grooves is of a convex arc structure; and the outer edges of the two guide grooves at two ends are higher than the transition part in the limiting grooves which are sequentially arranged side by side.
6. The agricultural machinery steering handle of any one of claims 1 to 4, wherein the limit pin comprises an installation part and two stress parts symmetrically arranged on two sides of the installation part, the stress parts are matched with the inner side wall structure of the limit groove, two sides of the stress parts matched with the groove wall of the limit groove respectively comprise stress surfaces and guide surfaces which are arranged up and down, the stress surfaces on each side are vertically arranged, and the guide surfaces on each side are obliquely arranged to enable the lower sharp corner of the stress part to form a structure.
7. An agricultural mechanical steering handle according to any one of claims 1 to 4, wherein a first shaft sleeve is arranged at the lower end of the handle rod welded together, nylon sleeves are respectively arranged at two ends of the first shaft sleeve, and a pin shaft is arranged on the rotating support and penetrates through the nylon sleeves and the first shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911162931.0A CN110626416B (en) | 2019-11-25 | 2019-11-25 | Position-adjustable handle rod and agricultural mechanical steering handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911162931.0A CN110626416B (en) | 2019-11-25 | 2019-11-25 | Position-adjustable handle rod and agricultural mechanical steering handle |
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| Publication Number | Publication Date |
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| CN110626416A CN110626416A (en) | 2019-12-31 |
| CN110626416B true CN110626416B (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911162931.0A Active CN110626416B (en) | 2019-11-25 | 2019-11-25 | Position-adjustable handle rod and agricultural mechanical steering handle |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111674453B (en) * | 2020-07-27 | 2021-09-14 | 安徽泗州拖拉机制造有限公司 | Handrail with limiting function for tractor and mounting method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203554369U (en) * | 2013-11-14 | 2014-04-16 | 浙江天赐新能源科技有限公司 | Solar cell panel support with locking device |
| CN205412083U (en) * | 2015-12-23 | 2016-08-03 | 青岛英派斯健康科技股份有限公司 | Body -building equipment adjusting device |
| CN106184338B (en) * | 2016-08-16 | 2019-02-22 | 第一拖拉机股份有限公司 | Endless-track vehicle turns to and brake operating mechanism |
| CN206086873U (en) * | 2016-08-31 | 2017-04-12 | 山东常林农业装备股份有限公司 | Track machine double pump list rod handling mechanism |
| CN106863238A (en) * | 2017-01-22 | 2017-06-20 | 重庆延锋安道拓汽车部件系统有限公司 | The adjustable car seat back frame fixture of angle of assembling |
| CN206561871U (en) * | 2017-03-02 | 2017-10-17 | 雷沃重工股份有限公司 | Steering apparatus |
| CN208590966U (en) * | 2017-12-07 | 2019-03-12 | 武汉苏泊尔炊具有限公司 | A kind of dipper |
| US10321627B1 (en) * | 2017-12-14 | 2019-06-18 | Schiller Grounds Care, Inc. | Adjustable machine handle assembly |
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| CN110626416A (en) | 2019-12-31 |
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Address after: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee after: Weichai leiwo Heavy Industry Co.,Ltd. Address before: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: LOVOL HEAVY INDUSTRY Co.,Ltd. |
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Address after: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee after: Weichai Lovol Intelligent Agricultural Technology Co.,Ltd. Address before: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: Weichai leiwo Heavy Industry Co.,Ltd. |