CN212753140U

CN212753140U - Mounting structure of micro-cultivator armrest frame and armrest seat

Info

Publication number: CN212753140U
Application number: CN202021902128.4U
Authority: CN
Inventors: 谢联川; 邓举业; 周勇
Original assignee: Chongqing Fuchai Power Machine Manufacture Co ltd
Current assignee: Chongqing Fuchai Power Machine Manufacture Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-03-23
Anticipated expiration: 2030-09-03

Abstract

The utility model discloses an installation structure of a micro-cultivator armrest frame and an armrest seat, which comprises an armrest frame, an armrest arm and an armrest seat, wherein the armrest arm is connected between the armrest frame and the armrest seat, the front end of the armrest frame is rotatably arranged at the upper end of the armrest arm, a height adjusting disc is fixedly arranged below a connecting rod at the front end of the armrest frame, and a plurality of adjusting through holes are arranged on the height adjusting disc at intervals; the novel armrest frame is characterized in that a handle is arranged on one handle pipe of the armrest frame, a height adjusting inhaul cable is connected to the handle, a height adjusting positioning pin is arranged at the tail end of the height adjusting inhaul cable, a return spring is connected between the height adjusting positioning pin and the height adjusting inhaul cable, the height adjusting positioning pin is inserted into an adjusting through hole, the armrest frame is locked and fixed on the armrest arm, and the armrest frame and the armrest arm are prevented from rotating; by tightly holding and loosening the grip, the height adjusting positioning pin can be respectively pulled out of and inserted into the adjusting through hole.

Description

Mounting structure of micro-cultivator armrest frame and armrest seat

Technical Field

The utility model relates to an agricultural machinery equipment, concretely relates to plough quick-witted handrail frame and mounting structure of handrail seat a little.

Background

The micro-cultivator is an agricultural cultivation machine and has the characteristics of light weight, small volume and simple structure. When the mini-tiller is used, the power device carried by the mini-tiller advances or retreats and drives the tilling knife to rotate, so that tilling is realized.

In order to adapt to the operation heights of operators with different heights, so that the mini-tiller is convenient to operate, and needs of turning, reversing and the like during driving are met at corners of the land, a handrail frame and a handrail seat of the mini-tiller are arranged in a split mode, the handrail frame and the handrail seat can rotate, the height of a handle of the handrail frame can be adjusted by rotating in the vertical height direction, the operation requirements of the operators with different heights are met, the handle of the handrail frame can be adjusted by rotating in the horizontal direction relative to the driving direction, and the driving needs of the mini-tiller in a narrow space, such as turning and reversing, are met.

The prior micro-cultivator armrest frame lifting adjustment is realized through the following structure: the armrest frame is rotatably arranged on the armrest arm, the armrest frame is provided with a positioning plate with a plurality of positioning grooves, the armrest arm is hinged with an adjusting rod, the adjusting rod is provided with a positioning piece matched with the positioning grooves in a positioning mode, and the armrest arm is further provided with a torsion spring capable of pressing the positioning piece into the positioning grooves. During the use, will adjust the vertical pressure of pole, make the setting element break away from the constant head tank, because handrail frame rotationally sets up on handrail arm, rotate handrail frame this moment and then realize handrail frame's lift, after the lift finishes, loosen the regulation pole, the setting element location constant head tank under the restoring force effect of torsional spring, handrail frame's rotation drives different constant head tanks and setting element and cooperates, thereby realize handrail frame not elevating at all, the cooperation position that will adjust through the torsional spring is fixed at last, realize handrail frame's lift.

When the lifting adjusting mechanism of the mini-tiller is operated, an operator needs to stand beside the adjusting rod to adjust, and then returns to an operation station after the adjustment is finished. The adjusting mode is complex, the required position is difficult to adjust at one time during adjustment, and workers are required to return to the operating station for trial and then adjust.

Disclosure of Invention

To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a simple structure, handrail frame go up and down conveniently, and can once only adjust the mounting structure who puts in place ploughs machine handrail frame and handrail seat a little.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a mounting structure of a micro-cultivator armrest frame and an armrest seat comprises the armrest frame, an armrest arm and the armrest seat, wherein the armrest arm is connected between the armrest frame and the armrest seat, the front end of the armrest frame is rotatably mounted at the upper end of the armrest arm, a height adjusting disc is fixedly arranged below a connecting rod at the front end of the armrest frame, and a plurality of adjusting through holes are formed in the height adjusting disc at intervals; the armrest frame is characterized in that a handle is arranged on one handle tube of the armrest frame, a height adjusting inhaul cable is connected to the handle, a height adjusting positioning pin is arranged at the tail end of the height adjusting inhaul cable, and a return spring is connected between the height adjusting positioning pin and the height adjusting inhaul cable; the upper end of the handrail arm is also fixedly provided with a U-shaped protective cover, the height adjusting disc is arranged in the U-shaped protective cover, the height adjusting positioning pin penetrates through the U-shaped protective cover and then is matched with the adjusting through hole, and the handrail frame is locked and fixed on the handrail arm to prevent the rotation between the handrail frame and the handrail arm; the height adjusting positioning pin can be respectively pulled out of and inserted into the adjusting through hole by tightly holding and loosening the grip; the middle part of the armrest seat is provided with an upright post which protrudes upwards, and the periphery of the upright post of the armrest seat is provided with a plurality of positioning holes at intervals; the lower end of the armrest arm is sleeved on the upright post and can rotate under the action of external force; a positioning cylinder is fixed at the lower end of the armrest arm, a pull rod is arranged in the positioning cylinder, and the pull rod can be matched with each positioning hole in the armrest seat along with the rotation of the armrest arm. Therefore, when the height of the armrest frame is adjusted, the height adjusting inhaul cable can pull the height adjusting inhaul cable to move by gripping the handle, the return spring is driven to stretch, the height adjusting positioning pin is pulled out of the adjusting through hole, the armrest frame is unlocked from the armrest arm, and an operator can rotate the armrest frame up and down at will to adjust the height; after the adjustment is completed, the handle is loosened, and the height adjusting positioning pin is inserted into the adjusting through hole corresponding to the height adjusting positioning pin under the resilience of the return spring, so that the armrest frame is locked, and the rotation between the armrest frame and the armrest arm is prevented. When the hand-held vehicle needs to turn, the pull rod is pulled upwards to be separated from the positioning hole in the hand-held seat, the fixation between the pull rod and the hand-held seat is released, then an operator rotates the hand-held frame to realize the turning, and after the turning is finished, the pull rod is inserted into the corresponding positioning hole to be fixed with the hand-held seat, so that the hand-held frame is prevented from rotating. The height adjusting mechanism is mainly adjusted through the handle, the adjusting mode is simple and convenient, and the height adjusting mechanism can be adjusted in place at one time. The U-shaped protection casing that sets up can cover the altitude mixture control dish inside, plays the guard action, simultaneously, for the preliminary location of locating pin.

Furthermore, the height adjusting disc is fan-shaped, the adjusting through holes are oval, and the circle centers of all the adjusting through holes are located on the same turning radius. Therefore, after an operator lifts or presses the handrail frame by hands to enable the height adjusting disc to rotate along with the handrail frame, all the adjusting through holes can correspond to the height adjusting positioning pins, and the height adjusting positioning pins can be inserted into the adjusting through holes to lock the handrail frame.

Furthermore, the handrail frame is composed of a connecting pipe and handle pipes symmetrically arranged at the left end and the right end of the connecting pipe, the handrail arm is connected with the handrail frame through a connecting cover, one end of the connecting cover is clamped on the connecting pipe of the handrail frame, the other end of the connecting cover is clamped at the upper end of the handrail arm, two U-shaped bolts are arranged on a connecting rod at the front end of the handrail frame at intervals, and the open ends of the U-shaped bolts are matched with a nut after penetrating through the connecting cover. Therefore, the connecting cover not only can be used for connecting the armrest frame and the armrest arm, but also can shield dust, and plays a role in protecting the height adjusting disc. The U-shaped bolt can support the handrail frame under the connecting cover and provide rotary support for the handrail frame, so that the handrail frame can rotate.

Furthermore, the pull rod consists of an upper inserted link, a middle limiting rod and a lower inserted link, wherein the diameter of the middle limiting rod is larger than the diameters of the upper inserted link and the lower inserted link, a pressure spring is arranged at the upper part of the upper inserted link, and a blocking and connecting piece with a through hole in the middle is arranged at the upper end of the positioning cylinder. Thus, after the pressure spring is additionally arranged and the pull rod is loosened, the pull rod can move downwards under the resilience force so as to be inserted into the corresponding positioning hole. The pull rod is arranged in a step shape, so that the insertion depth of the pull rod can be limited, and an installation position is provided for the pressure spring. The blocking and connecting piece can be pulled upwards on the pull rod and is abutted against the blocking and connecting piece, and compression is achieved.

Furthermore, the positioning holes are distributed in a circular shape, and the centers of the positioning holes are located on the same turning radius. Therefore, after the pull rod rotates along with the armrest frame, the positioning hole is positioned on the rotating radius of the pull rod, so that the pull rod can correspond to the pull rod, and locking is realized.

Furthermore, a spherical handle is arranged at the upper end of the pull rod. Therefore, when the pull rod is pulled, the pull rod is more convenient and labor-saving.

Furthermore, an annular groove is radially arranged on the upright post, a through hole corresponding to the annular groove is arranged at the lower end of the armrest arm, a positioning bolt is arranged in the through hole, and a nut matched with the positioning bolt through threads is arranged on the positioning bolt. Therefore, after the armrest frame rotates in place, the arranged positioning bolt can further tightly support and fix the armrest seat and the armrest arm.

Drawings

FIG. 1 is a schematic perspective view of an installation structure of a handrail frame and a handrail seat in an embodiment;

FIG. 2 is a cross-sectional view of an armrest frame and an armrest seat in an embodiment;

fig. 3 is a partially enlarged schematic view of fig. 1.

In the figure: the handrail frame 1, the handrail arm, the handrail seat 3, the upright column 31, the positioning hole 32, the annular groove 33, the grip 4, the height adjusting inhaul cable 5, the height adjusting positioning pin 6, the return spring 7, the height adjusting disc 8, the adjusting through hole 81, the connecting cover 9, the U-shaped bolt 10, the positioning cylinder 11, the pull rod 12, the pressure spring 13, the blocking piece 14 and the positioning bolt 15.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example (b):

as shown in fig. 1-3, the mounting structure of a handrail frame and a handrail seat of a mini-tiller provided in this embodiment includes a handrail frame 1, a handrail arm 2 and a handrail seat 3, wherein the handrail arm 2 is connected between the handrail frame 1 and the handrail seat 3, the front end of the handrail frame 1 is rotatably mounted at the upper end of the handrail arm 2, a height adjusting disc 8 is fixedly arranged below a connecting rod at the front end of the handrail frame 1, and a plurality of adjusting through holes 81 are arranged on the height adjusting disc 8 at intervals; a handle 4 is arranged on one handle pipe of the armrest frame 1, a height adjusting inhaul cable 5 is connected to the handle 4, a height adjusting positioning pin 6 is arranged at the tail end of the height adjusting inhaul cable 5, and a return spring 7 is connected between the height adjusting positioning pin 6 and the height adjusting inhaul cable 5; the upper end of the handrail arm 2 is also fixed with a U-shaped protective cover 16, the height adjusting disc is arranged in the U-shaped protective cover 16, the height adjusting positioning pin 6 penetrates through the U-shaped protective cover 16 and then is matched with the adjusting through hole 81, the handrail frame 1 is locked and fixed on the handrail arm 2, and the rotation between the handrail frame 1 and the handrail arm 2 is prevented; by grasping and releasing the grip 4, the height adjusting positioning pin 6 can be pulled out of and inserted into the adjusting through hole 81.

The armrest frame realizes steering through an armrest frame steering mechanism, specifically, an upright column 31 protruding upwards is arranged in the middle of the armrest seat 3, and a plurality of positioning holes 32 are arranged at intervals around the upright column 31 of the armrest seat 3; the lower end of the armrest arm 2 is sleeved on the upright column 31 and can rotate under the action of external force; a positioning cylinder 11 is fixed at the lower end of the armrest arm 2, a pull rod 12 is arranged in the positioning cylinder 11, and the pull rod 12 can be matched with each positioning hole 32 on the armrest seat 3 along with the rotation of the armrest arm 2; the positioning holes 32 are distributed in a circular shape, and the centers of all the positioning holes 32 are located on the same turning radius.

As shown in fig. 2, the height adjusting plate 8 is fan-shaped, the adjusting through holes 81 are oval (the holes may be replaced by strip-shaped holes or waist-shaped holes), and the centers of the adjusting through holes 81 are located on the same turning radius.

The armrest arm 2 is connected with the armrest frame 1 through a connecting cover 9, one end of the connecting cover 9 is clamped on a connecting rod at the front end of the armrest frame 1, the other end of the connecting cover 9 is clamped at the upper end of the armrest arm 2, two U-shaped bolts 10 are arranged on the connecting rod at the front end of the armrest frame 1 at intervals, and the open ends of the U-shaped bolts 10 are matched with a nut after penetrating through the connecting cover.

The pull rod 12 is composed of an upper inserted link, a middle limiting rod and a lower inserted link, wherein the diameter of the middle limiting rod is larger than the diameters of the upper inserted link and the lower inserted link, a pressure spring 13 is arranged at the upper part of the upper inserted link, and a blocking and connecting piece 14 with a through hole in the middle is arranged at the upper end of the positioning cylinder 11. A ball-shaped handle is arranged at the upper end of the pull rod 12.

An annular groove 33 is radially arranged on the upright column 31, a through hole corresponding to the annular groove 33 is arranged at the lower end of the handrail arm 2, a positioning bolt 15 is arranged in the through hole, and a nut matched with the positioning bolt 15 through threads is arranged on the positioning bolt 15.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and although the applicant has described the present invention in detail with reference to the preferred embodiments, those skilled in the art should understand that those modifications or equivalent substitutions to the technical solutions of the present invention can be made without departing from the spirit and scope of the technical solutions, and all the modifications and equivalent substitutions should be covered by the claims of the present invention.

Claims

1. A mounting structure of a micro-cultivator armrest frame and an armrest seat comprises an armrest frame (1), armrest arms (2) and an armrest seat (3), wherein the armrest arms (2) are connected between the armrest frame (1) and the armrest seat (3), the front end of the armrest frame (1) is rotatably mounted at the upper ends of the armrest arms (2), a height adjusting disc (8) is fixedly arranged below a connecting rod at the front end of the armrest frame (1), and a plurality of adjusting through holes (81) are formed in the height adjusting disc (8) at intervals; the novel armrest frame is characterized in that a handle (4) is arranged on one handle tube of the armrest frame (1), a height adjusting inhaul cable (5) is connected to the handle (4), a height adjusting positioning pin (6) is arranged at the tail end of the height adjusting inhaul cable (5), and a return spring (7) is connected between the height adjusting positioning pin (6) and the height adjusting inhaul cable (5); the upper end of the armrest arm (2) is also fixed with a U-shaped protective cover (16), the height adjusting disc is arranged in the U-shaped protective cover (16), the height adjusting positioning pin (6) penetrates through the U-shaped protective cover (16) and then is matched with the adjusting through hole (81), the armrest frame (1) is locked and fixed on the armrest arm (2), and the rotation between the armrest frame (1) and the armrest arm (2) is prevented; the height adjusting positioning pin (6) can be respectively pulled out of and inserted into the adjusting through hole (81) by tightly holding and loosening the grip (4); an upright post (31) protruding upwards is arranged in the middle of the armrest seat (3), and a plurality of positioning holes (32) are arranged at intervals around the upright post (31) of the armrest seat (3); the lower end of the armrest arm (2) is sleeved on the upright post (31) and can rotate under the action of external force; a positioning cylinder (11) is fixed at the lower end of the armrest arm (2), a pull rod (12) is arranged in the positioning cylinder (11), and the pull rod (12) can be matched with each positioning hole (32) in the armrest seat (3) along with the rotation of the armrest arm (2).

2. The mounting structure of the armrest frame and the armrest seat of the mini-tiller according to claim 1, wherein the height adjusting plate (8) is fan-shaped, the adjusting through holes (81) are oval, and the centers of the circles of all the adjusting through holes (81) are located on the same radius of rotation.

3. The mounting structure of the handrail frame and the handrail seat of the mini-tiller according to claim 1 or 2, wherein the handrail arm (2) is connected with the handrail frame (1) through a connecting cover (9), one end of the connecting cover (9) is clamped on a connecting rod at the front end of the handrail frame (1), the other end of the connecting cover is clamped at the upper end of the handrail arm (2), two U-shaped bolts (10) are arranged on the connecting rod at the front end of the handrail frame (1) at intervals, and the open ends of the U-shaped bolts (10) are matched with a nut after passing through the connecting cover.

4. The mounting structure of the handrail frame and the handrail seat of the mini-tiller according to claim 1, wherein the pull rod (12) is composed of an upper insertion rod, a middle limit rod and a lower insertion rod, wherein the diameter of the middle limit rod is larger than the diameters of the upper insertion rod and the lower insertion rod, a compression spring (13) is arranged on the upper insertion rod, and a blocking piece (14) with a through hole in the middle is arranged at the upper end of the positioning cylinder (11).

5. The mounting structure of the armrest frame and the armrest seat of the mini-tiller according to claim 1, wherein the positioning holes (32) are distributed in a circle, and the centers of all the positioning holes (32) are located on the same turning radius.

6. The mounting structure of the handrail frame and the handrail seat of the mini-tiller according to claim 4, characterized in that a spherical handle is arranged at the upper end of the pull rod (12).

7. The mounting structure of the handrail frame and the handrail seat of the mini-tiller according to claim 1, 4 or 5, characterized in that an annular groove (33) is radially formed on the upright column (31), a through hole corresponding to the annular groove (33) is formed at the lower end of the handrail arm (2), a positioning bolt (15) is arranged in the through hole, and a nut which is in threaded fit with the positioning bolt (15) is arranged on the positioning bolt (15).