CN213114750U

CN213114750U - Loader support arm structure of tractor

Info

Publication number: CN213114750U
Application number: CN202020746707.8U
Authority: CN
Inventors: 俞正坤; 马兵; 唐清权
Original assignee: Kunming Coach Manufacturing Co ltd
Current assignee: Kunming Coach Manufacturing Co ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2021-05-04
Anticipated expiration: 2030-05-08

Abstract

The utility model discloses a loader support arm structure of a tractor, belonging to the technical field of tractor machinery; the device comprises an installation base, a hydraulic cylinder seat, a movable arm, a bucket arm, a first hydraulic cylinder, a second hydraulic cylinder, a shaft sleeve, a bucket and a horizontal observation device, wherein one end of the installation base is fixedly installed on a frame, one end of the installation base, far away from the frame, is connected with the hydraulic cylinder seat, the movable arm, the first hydraulic cylinder, the bucket arm and the second hydraulic cylinder are respectively connected to two sides of the shaft sleeve, one ends, far away from the shaft sleeve, of the movable arm and the first hydraulic cylinder are connected to the hydraulic cylinder seat, one ends, far away from the shaft sleeve, of the bucket arm and the second hydraulic cylinder are connected to the bucket, the second hydraulic cylinder is positioned above the bucket arm, and; the utility model discloses it is convenient with the dismouting to assemble, and the dismouting of whole loader can be accomplished to a dismouting threaded pin axle, simultaneously through with the integrated welding of sighting rod and pole section of thick bamboo on a pneumatic cylinder, avoids hydraulic line.

Description

Loader support arm structure of tractor

Technical Field

The utility model relates to a loader support arm structure of tractor belongs to tractor machinery technical field.

Background

Tractors are widely used in rural areas, but generally are usually parked at home in the leisure time, and in order to enable the tractors to play a role in the leisure time, a loader and the like are usually additionally arranged on the tractors. The durability and engine power of the tractor make it suitable for engineering tasks. It is fitted with a bucket by a tractor and the bucket is raised or lowered by hydraulic arms so that it can be easily scooped up of dirt, rocks and soft materials and fitted to a truck. The tractor with the loader in the front is provided with two hydraulically powered arms which are respectively arranged on two sides of a front engine room; there is also a dumping device, i.e. a bucket.

The loader additionally installed needs a structure convenient for repeated disassembly and assembly, and the working state of the tractor for agriculture and engineering is convenient to switch; in addition, most of loaders in the market do not have a scale for judging whether the bucket is placed horizontally or not, when the loader is actually operated, a driver often cannot see the position of the bucket when sitting on a seat, the lower plane of the bucket is required to be kept horizontal with the ground when the bucket is placed downwards, and the driver cannot see the specific position of the bucket, so that the driver can hardly judge whether the plane of a bottom plate of the bucket is kept horizontal with the ground when the bucket of the loader is placed on the ground. Many experienced drivers judge the level of the bucket floor relative to the ground by looking at their own markings, and for some novice drivers a means is required to judge whether the bucket is in a level position.

Two Chinese appearance patents with the publication numbers of CN305320843S and CN305236738S respectively disclose a tractor (JY254) integrating the functions of a construction vehicle and a front loader movable arm (small-sized) of the tractor, and the design points of the two Chinese appearance patents are both in the shape of a product; two Chinese appearance patents both relate to the same kind of loader, its loader hydraulic cylinder seat is formed by a c-shaped piece and a steel plate welding, the hydraulic cylinder seat is fixed with the installation base through its steel plate with many bolts, the structure is troublesome to disassemble and assemble, influence esthetic; meanwhile, the horizontal observation device arranged on the support arm is arranged on the inner side of the support arm and is positioned near the hydraulic pipelines, the hydraulic pipelines are numerous and densely arranged, and the horizontal observation device causes more complicated design, installation, maintenance, replacement time and workload for the complex hydraulic pipelines.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a loader support arm structure of a tractor.

The utility model adopts the technical proposal that: a loader support arm structure of a tractor comprises an installation base, a hydraulic cylinder seat, a movable arm, a bucket arm, a first hydraulic cylinder, a second hydraulic cylinder, a shaft sleeve, a bucket and a horizontal observation device, wherein one end of the installation base is fixedly installed on a frame, one end of the installation base, far away from the frame, is connected with the hydraulic cylinder seat through a threaded pin shaft and a solid shaft, and the solid shaft is clamped with the hydraulic cylinder seat; the movable arm, the first hydraulic cylinder, the bucket arm and the second hydraulic cylinder are respectively connected to two sides of the shaft sleeve, one ends, far away from the shaft sleeve, of the movable arm and the first hydraulic cylinder are connected to the hydraulic cylinder seat, one ends, far away from the shaft sleeve, of the bucket arm and the second hydraulic cylinder are connected to the bucket, the second hydraulic cylinder is located above the bucket arm, and the horizontal observation device is installed between the bucket and the shaft sleeve;

the mounting base is connected with the hydraulic cylinder base through a connecting end and is provided with an intermediate plate, a solid shaft is fixedly mounted on the intermediate plate, a through hole is formed in the intermediate plate above the solid shaft, the lower end of the hydraulic cylinder base is provided with an opening clamping groove matched with the solid shaft and a rectangular notch matched with the intermediate plate, the opening clamping groove is clamped into the solid shaft, the waist of the hydraulic cylinder base is provided with a round hole, and the hydraulic cylinder base is fixedly connected with the intermediate plate through a threaded pin shaft and the solid shaft; the horizontal observation device comprises a marker post, a rod cylinder and a connecting plate, wherein the marker post is arranged in the rod cylinder, and the horizontal observation device is connected to the upper side of the second hydraulic cylinder through the connecting plate.

Furthermore, a sleeve is welded in the through hole in the middle plate, and a round hole in the waist of the hydraulic cylinder seat is aligned with the sleeve and then is inserted into the threaded pin shaft and is fixed by a nut; the sleeve is reinforced and stabilized.

Furthermore, the hydraulic cylinder base is formed by cutting a rectangular pipe and comprises a rectangular pipe at the lower end and a C-shaped sleeve at the upper end, the opening clamping groove and the rectangular notch are formed in the end part of the lower end of the rectangular pipe, the opening clamping groove is formed in the front vertical surface and the rear vertical surface of the rectangular pipe, the rectangular notch is formed in the left vertical surface and the right vertical surface of the rectangular pipe, and a reinforcing plate is welded in the C-shaped sleeve; the depth of the left vertical face rectangular cut is greater than that of the right vertical face rectangular cut.

Further, when the bucket is horizontal, the marker post extends out of the rod barrel by 5mm-10mm, preferably 5 mm; the length is set to be that the marker post just protrudes out of the post barrel, so that the marker post is more convenient for a driver to observe.

Furthermore, the connecting plates are at least three and are respectively fixed at the two ends and the middle part of the horizontal observation device, and the middle part is reinforced, so that the problem that the middle part is easy to bend and damage when the two ends are fixed is avoided.

Furthermore, the middle plate comprises a hollow rectangular plate at the lower end and an isosceles trapezoid plate at the upper end, the lower end of the middle plate is sleeved on the rectangular pipe of the mounting base, and the isosceles trapezoid plate at the upper end of the middle plate is partially provided with the solid shaft and the sleeve.

Furthermore, sealing plates are fixedly arranged at two ends of the rectangular tube of the mounting base, so that foreign matters, water flow and the like are prevented from entering, and meanwhile, the effect of attractive appearance is achieved.

Compared with the prior art, the beneficial effects of the utility model are that: the structure is simple and precise, the raw materials of the installation base and the hydraulic cylinder seat are rectangular pipes and steel plates, and the cost is controllable. The assembly and the disassembly are convenient, and the disassembly and the assembly of the whole loader can be completed by disassembling one threaded pin shaft. When the hydraulic cylinder seat is installed, the opening clamping groove of the hydraulic cylinder seat is clamped on a solid shaft of a loader installation base, the hydraulic cylinder seat is adjusted, a waist round hole of the hydraulic cylinder seat is aligned with a sleeve through hole in the loader installation base, and a threaded pin shaft with a nut is penetrated for fastening; when the loader is disassembled, the loader can be disassembled from the frame only by disassembling the threaded pin shaft.

Through with the integrated welding of sighting rod and pole section of thick bamboo on a pneumatic cylinder, the sighting rod is along with the shrink of hydraulic stem and extension reciprocating motion in the pole section of thick bamboo, gives sighting rod extension pole length (5mm) when scraper bowl bottom plate and ground level, and the driver can this judgement scraper bowl position. The device has simple and attractive structure, does not influence the installation and maintenance of the side hydraulic pipeline, has more reasonable design, and can easily judge the horizontal position of the bucket by a driver.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is the connection schematic diagram of the installation base and the hydraulic cylinder base of the present invention.

Fig. 3 is a schematic view of the structure of the installation base of the present invention.

Fig. 4 is a schematic view of the connection between the second hydraulic cylinder and the horizontal observation device of the present invention.

In the figure: 1-mounting a base, 11-a solid shaft, 12-an intermediate plate, 13-a sleeve, 2-a hydraulic cylinder base, 3-a first hydraulic cylinder, 4-a movable arm, 5-a shaft sleeve, 6-a bucket arm, 7-a second hydraulic cylinder, 8-a horizontal observation device and 9-a bucket.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, in the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

As shown in fig. 1 and 2: a loader arm structure for a tractor comprising: the device comprises an installation base 1, a hydraulic cylinder seat 2, a movable arm 4, a bucket arm 6, a first hydraulic cylinder 3, a second hydraulic cylinder 7, a shaft sleeve 5, a bucket 9 and a horizontal observation device 8, wherein one end of the installation base 1 is fixedly installed on a frame, one end, far away from the frame, of the installation base 1 is connected with the hydraulic cylinder seat 2 through a threaded pin shaft and a solid shaft 11, the solid shaft 11 is clamped with the hydraulic cylinder seat 2, the movable arm 4, the first hydraulic cylinder 3, the bucket arm 6 and the second hydraulic cylinder 7 are respectively connected to two sides of the shaft sleeve 5, one ends, far away from the shaft sleeve 5, of the movable arm 4 and the first hydraulic cylinder 3 are connected to the hydraulic cylinder seat 2, one ends, far away from the shaft sleeve 5, of the bucket arm 6 and the second hydraulic cylinder 7 are connected to the bucket 9, the second hydraulic cylinder 7 is located above the bucket arm 6; an intermediate plate 12 is mounted at the connecting end of the mounting base 1 and the hydraulic cylinder base 2, a solid shaft 11 is fixedly mounted on the intermediate plate 12, a through hole is formed in the intermediate plate 12 above the solid shaft 11, an opening clamping groove matched with the solid shaft 11 and a rectangular notch matched with the intermediate plate 12 are formed in the lower end of the hydraulic cylinder base 2, the opening clamping groove is clamped into the solid shaft 11, a round hole is formed in the waist of the hydraulic cylinder base 2, and the hydraulic cylinder base 2 is fixedly connected with the intermediate plate 12 through a threaded pin shaft and the solid shaft 11; the horizontal observation device 8 comprises a marker post, a rod cylinder and a connecting plate, the marker post is arranged in the rod cylinder, and the horizontal observation device 8 is connected to the upper side of the second hydraulic cylinder 7 through the connecting plate.

As shown in fig. 3 and 4: a sleeve 13 is welded in the through hole on the middle plate 12, and a round hole in the waist of the hydraulic cylinder seat 2 is aligned with the sleeve 13, then a threaded pin shaft is inserted and fixed by a nut. The hydraulic cylinder base 2 is formed by cutting a rectangular pipe and comprises a rectangular pipe at the lower end and a C-shaped sleeve at the upper end, the opening clamping groove and the rectangular notch are formed in the end portion of the lower end of the rectangular pipe, and a reinforcing plate is welded in the C-shaped sleeve. When the bucket 9 is horizontal, the marker post extends out of the rod barrel by 5 mm. And at least three connecting plates are respectively fixed at the two ends and the middle part of the horizontal observation device 8. The middle plate 12 comprises a hollow rectangular plate at the lower end and an isosceles trapezoid plate at the upper end, the lower end of the middle plate 12 is sleeved on the rectangular pipe of the mounting base 1, and the isosceles trapezoid plate at the upper end of the middle plate 12 is partially provided with a solid shaft 11 and a sleeve 13. And sealing plates are fixedly arranged at two ends of the rectangular pipe of the mounting base 1.

While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The utility model provides a loader support arm structure of tractor, is including installation base (1), hydraulic cylinder seat (2), installation base (1) one end fixed mounting is in the frame, its characterized in that: the mounting base (1) is far away from one end of the frame and is connected with the hydraulic cylinder base (2) through a threaded pin shaft and a solid shaft (11), and the solid shaft (11) is connected with the hydraulic cylinder base (2) in a clamping mode.

2. The loader arm structure of a tractor according to claim 1, wherein: still include movable arm (4), dipper arm (6), first pneumatic cylinder (3), second pneumatic cylinder (7), axle sleeve (5), scraper bowl (9), horizontal viewing device (8), movable arm (4), first pneumatic cylinder (3) and dipper arm (6), second pneumatic cylinder (7) are connected respectively in axle sleeve (5) both sides, the one end that axle sleeve (5) were kept away from in movable arm (4), first pneumatic cylinder (3) is connected in hydraulic cylinder seat (2), the one end that axle sleeve (5) were kept away from in dipper arm (6), second pneumatic cylinder (7) is connected in scraper bowl (9), second pneumatic cylinder (7) are located dipper arm (6) top, horizontal viewing device (8) are installed between scraper bowl (9) and axle sleeve (5).

3. The loader arm structure of a tractor according to claim 1, wherein: mounting base (1) and hydraulic cylinder seat (2) link install intermediate lamella (12), fixed mounting has solid axle (11) on intermediate lamella (12), the top of solid axle (11) is located intermediate lamella (12) and has seted up a through-hole, hydraulic cylinder seat (2) lower extreme have with solid axle (11) assorted opening draw-in groove and with intermediate lamella (12) assorted rectangle incision, solid axle (11) are gone into to opening draw-in groove card, and the round hole has been seted up to hydraulic cylinder seat (2) waist, and hydraulic cylinder seat (2) are through threaded pin axle and solid axle (11) and intermediate lamella (12) fixed connection.

4. A loader arm structure of a tractor according to claim 3 in which: a sleeve (13) is welded in a through hole in the middle plate (12), and a round hole in the waist of the hydraulic cylinder seat (2) is aligned with the sleeve (13), then a threaded pin shaft is inserted and fixed by a nut.

5. The loader arm structure of a tractor according to claim 3 or 4, wherein: the hydraulic cylinder base (2) is formed by cutting a rectangular pipe and comprises a rectangular pipe at the lower end and a C-shaped sleeve at the upper end, the opening clamping groove and the rectangular notch are formed in the end portion of the lower end of the rectangular pipe, and a reinforcing plate is welded in the C-shaped sleeve.

6. The loader arm structure of a tractor according to claim 2, wherein: the horizontal observation device (8) comprises a marker post, a rod cylinder and a connecting plate, the marker post is arranged in the rod cylinder, and the horizontal observation device (8) is connected to the upper side of the second hydraulic cylinder (7) through the connecting plate; when the bucket (9) is horizontal, the marker post extends out of the rod barrel by 5 mm.

7. The loader arm structure of a tractor according to claim 6, wherein: and the connecting plates are at least three and are respectively fixed at the two ends and the middle part of the horizontal observation device (8).

8. A loader arm structure of a tractor according to claim 3 in which: the middle plate (12) comprises a hollow rectangular plate at the lower end and an isosceles trapezoid plate at the upper end, the lower end of the middle plate (12) is sleeved on the rectangular pipe of the mounting base (1), and the isosceles trapezoid plate at the upper end of the middle plate (12) is provided with a solid shaft (11) and a sleeve (13).

9. A loader arm structure of a tractor according to claim 1 or 2 in which: and sealing plates are fixedly arranged at two ends of the rectangular pipe of the mounting base (1).