CN215121865U - Tractor lifting arm - Google Patents
Tractor lifting arm Download PDFInfo
- Publication number
- CN215121865U CN215121865U CN202120636752.2U CN202120636752U CN215121865U CN 215121865 U CN215121865 U CN 215121865U CN 202120636752 U CN202120636752 U CN 202120636752U CN 215121865 U CN215121865 U CN 215121865U
- Authority
- CN
- China
- Prior art keywords
- lifting arm
- arm
- lift arm
- top surface
- tractor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims description 26
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 description 14
- 238000005266 casting Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 241000227287 Elliottia pyroliflora Species 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Landscapes
- Agricultural Machines (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
The utility model discloses a tractor lift arm, include: the tail end of the main body part is provided with a main connecting hole; the branch part comprises a first lifting arm used for connecting a hydraulic cylinder and a second lifting arm used for connecting a load connecting rod, the tail end of the second lifting arm is provided with a first connecting lug and a second connecting lug which are opposite, the first lifting arm is provided with a first connecting hole, and the first connecting lug and the second connecting lug are respectively provided with a second connecting hole and a third connecting hole for installing the same articulated piece; a first avoidance area is arranged between the first lifting arm and the second lifting arm, and a second avoidance area is arranged between the first connecting lug and the second connecting lug; the top surface of the first lifting arm and the top surface of the second lifting arm are in a common arc surface, and the bottom surface of the first lifting arm and the bottom surface of the second lifting arm are in a common arc surface; the top surface of the lift arm is provided with a reinforcing rib extending from the distal end of the main body portion to the branch portion. The tractor lifting arm improves the bearing capacity and avoids fracture in use.
Description
Technical Field
The utility model relates to the technical field of agricultural machinery, concretely relates to tractor lift arm.
Background
The tractor is a self-propelled power machine used for towing and driving the operation machinery to complete various mobile operations. In the agricultural field, tractors are generally used for towing agricultural implements, and with the development of high-efficiency agricultural mechanization, the agricultural implements towed by high-power wheeled tractors have higher and higher mass (especially when performing compound operation), so that the requirements on the lifting capacity of the tractors are higher and higher.
Tractors typically require the use of lift arms that function to connect, tow and raise when towing an agricultural implement, however, existing lift arms suffer from the following problems:
in the use process, load strength is lower, can not carry out the operation in abominable field and use to torsion after the lift arm and the agricultural machinery cooperation is lower, and factor of safety fails to reach normal application range, the condition of fracture appears easily, influences normal farming. In addition, the situation of breakage is easy to occur when the agricultural implements with large mass are dragged during compound operation.
SUMMERY OF THE UTILITY MODEL
To the above, the utility model aims to solve the technical problem that a lifting arm is provided and has structural strength height, and the bearing capacity is good, advantage low in manufacturing cost.
In order to solve the technical problem, the technical scheme of the utility model is that:
a tractor lift arm, comprising: a main body part and a branch part,
the tail end of the main body part is provided with a main connecting hole;
the branch part comprises a first lifting arm used for connecting a hydraulic cylinder and a second lifting arm used for connecting a load-carrying connecting rod, the tail end of the second lifting arm is provided with a first connecting lug and a second connecting lug which are opposite, the first lifting arm is provided with a first connecting hole, and the first connecting lug and the second connecting lug are respectively provided with a second connecting hole and a third connecting hole which are used for installing the same articulated piece;
a first avoidance area is arranged between the first lifting arm and the second lifting arm, and a second avoidance area is arranged between the first connecting lug and the second connecting lug;
the top surface of the first lifting arm and the top surface of the second lifting arm are in a common arc surface, and the bottom surface of the first lifting arm and the bottom surface of the second lifting arm are in a common arc surface;
the top surface of the lift arm is provided with a reinforcing rib extending from the distal end of the main body portion to the branch portion.
Preferably, the length of the first lifting arm is less than the length of the second lifting arm.
Preferably, the tail end of the first lifting arm is set to be a first square body, the first connecting lug is set to be a second square body, the second connecting lug is set to be a third square body, the first square body is provided with a first arc transition angle connected with the top surface of the first lifting arm, the second square body is provided with a second arc transition angle connected with the top surface of the second lifting arm, and the third square body is provided with a third arc transition angle connected with the top surface of the second lifting arm.
Preferably, the strengthening rib includes first strengthening rib, second strengthening rib and third strengthening rib, first strengthening rib follows the end of main part extends to the top surface of first lift arm with first circular arc transition angle juncture, the second strengthening rib is followed the end of main part extends to the top surface of second lift arm with second circular arc transition angle juncture, the third strengthening rib follows the end of main part extends to the top surface of second lift arm with third circular arc transition angle juncture.
Preferably, the outer end face of the second engaging lug is provided with a bolt rotation preventing groove.
Preferably, the tail end of the first lifting arm is provided with an oil nozzle hole, the oil nozzle hole is communicated with a first connecting hole in the first lifting arm, a copper sleeve is installed in the first connecting hole, and an oil groove and an oil inlet hole corresponding to the oil nozzle hole are formed in the copper sleeve.
Preferably, the main connecting hole is a spline shaft mounting hole.
Preferably, the tractor lifting arm is cast and formed by ductile iron.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
the top surface of the first lifting arm and the top surface of the second lifting arm of the tractor lifting arm of the utility model are in a common cambered surface, and the bottom surface of the first lifting arm and the bottom surface of the second lifting arm are in a common cambered surface; the top surface and the bottom surface both adopt cambered surface structures, so that the lifting arm is integrally in an arched structure, and can be dispersed to be stressed downwards and outwards when stressed, the load bearing capacity of the lifting arm is improved, and the condition that the lifting arm is broken during operation is avoided.
Meanwhile, the top surface of the lifting arm is provided with the reinforcing ribs extending from the tail end of the main body part to the branch parts, so that the overall structural strength of the lifting arm is further improved.
In addition, the tail end of the first lifting arm is set to be a first square body, the first connecting lug is set to be a second square body, the second connecting lug is set to be a third square body, a design parting surface can be more freely formed when the lifting arm is cast, the excessive depth of local die drawing is avoided, and the process yield is reduced.
Drawings
Fig. 1 is a schematic structural view of a lifting arm of a tractor according to the present invention;
FIG. 2 is a view of the tractor lift arm of FIG. 1 taken in the direction A (with the end of the main body section cut away);
FIG. 3 is a side elevational view of the tractor lift arm of FIG. 1;
FIG. 4 is an enlarged cross-sectional view of FIG. 3 at B-B;
1-a main body part, 11-a tail end of the main body part, 12-a main connecting hole, 2-a branch part, 21-a first lifting arm, 211-a first connecting hole, 21 a-a first square body, 21D-a top surface of the first lifting arm, 22-a second lifting arm, 22D-a top surface of the second lifting arm, 221-a first connecting lug, 222-a second connecting lug, 221 a-a second connecting hole, 222 a-a third connecting hole, 23-a first avoiding region, 24-a second avoiding region, 21R-a first arc transition angle, 22R-a second arc transition angle, 23R-a third arc transition angle, 24-a first reinforcing rib, 25-a second reinforcing rib, 26-a third reinforcing rib, 27-an oil nozzle hole, 222C-a bolt rotation preventing groove, 3-a copper sleeve, 31-oil inlet hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The tractor lifting arm as shown in fig. 1 to 4 comprises a main body part 1 and a branch part 2, wherein a main connecting hole 12 is formed at the tail end 11 of the main body part;
the branch part 2 comprises a first lifting arm 21 for connecting a hydraulic cylinder and a second lifting arm 22 for connecting a load-carrying connecting rod, the tail end of the second lifting arm is provided with a first connecting lug 221 and a second connecting lug 222 which are opposite, the first lifting arm 21 is provided with a first connecting hole 211, and the first connecting lug 221 and the second connecting lug 222 are respectively provided with a second connecting hole 221a and a third connecting hole 222a for mounting the same hinge piece;
a first avoidance area 23 is arranged between the first lifting arm 21 and the second lifting arm 22, and a second avoidance area 24 is arranged between the first connecting lug 221 and the second connecting lug 222;
the top surface 21D of the first lifting arm and the top surface 22D of the second lifting arm are in a common arc surface, and the bottom surface of the first lifting arm 21 and the bottom surface of the second lifting arm 22 are in a common arc surface; the top surface and the bottom surface are both of cambered surface structures, so that an arch structure is formed, the arch structure can be dispersed to be stressed downwards and outwards when stressed, and the load bearing capacity of the structure is improved.
The length of the first lifting arm 21 is smaller than the length of the second lifting arm 22. Shortening the length of the first lifting arm 21 improves the structural strength of the first lifting arm 21.
The end of the first lifting arm 21 is set as a first square body 21a, the first connection lug 221 is set as a second square body, the second connection lug 222 is set as a third square body, the first square body is provided with a first arc transition angle 21R connected with the top surface of the first lifting arm, the second square body is provided with a second arc transition angle 22R connected with the top surface of the second lifting arm 22, and the third square body is provided with a third arc transition angle 23R connected with the top surface of the second lifting arm 22.
The end of first lift arm of tradition and second lift arm sets up to the cylinder body, the utility model discloses set up the end of first lift arm 21 into first square body 21a, first engaging lug 221 department sets up to the second square body, second engaging lug 222 department sets up to the third square body, set up to square body structure and compare the material that has increased terminal on the one hand with traditional cylindrical structure, structural strength has been improved, on the other hand improves casting technology, this is because mould and lower mould form casting are adopted when lifting arm casting, when the end sets up to cylindrically, for the die sinking, the die sinking can only set up the horizontal intermediate position at corresponding cylinder body, the die sinking has been injectd, square structure can be more free design die sinking, avoid local draft depth too big, reduce technology yield.
The top surface of the lifting arm is provided with a reinforcement rib extending from the distal end 11 of the main body part to the branch part 2. The strengthening rib includes first strengthening rib 24, second strengthening rib 25 and third strengthening rib 26, and first strengthening rib 24 extends to the top surface 21D and the first circular arc transition angle 21R juncture of first lift arm from the end of main part 1, and second strengthening rib 25 extends to the top surface 22D and the second circular arc transition angle 22R juncture of second lift arm from the end of main part, and third strengthening rib 26 extends to the top surface 22D and the third circular arc transition angle 23R juncture of second lift arm from the end 11 of main part.
The arrangement of the reinforcing ribs further enhances the overall structural strength of the lifting arm. The first arc transition angle 21R, the second arc transition angle 22R and the third arc transition angle 23R are arranged, so that stress concentration at the transition position is avoided, and the structural strength is improved.
As shown in fig. 1 and 3, a bolt rotation preventing groove 222C is formed on an outer end surface of the second engaging lug 222.
The end of the first lifting arm 21 is provided with an oil nozzle hole 27, as shown in fig. 4, the oil nozzle hole 27 is communicated with the first connection hole 211 on the first lifting arm, the copper bush 3 is installed in the first connection hole 211, and the copper bush 3 is provided with an oil groove (not shown) and an oil inlet hole 31 corresponding to the oil nozzle hole 211. Not only provides enough lubrication for the joint, but also improves the wear resistance of the first connecting hole and prevents the parts from being damaged.
A main attachment hole 12 at the tip end 11 of the main body portion is provided as a spline shaft attachment hole.
The utility model discloses a tractor lifting arm adopts nodular cast iron to cast and takes shape, replaces traditional forged steel with the nodular cast iron casting, reduces the cost of material through the intensive design of structure, even can realize the design of equidensity also with nodular cast iron, and nodular cast iron casting process is simple moreover, has reduced low in manufacturing cost, and the economic type is better.
The utility model discloses a connecting rod of pneumatic cylinder and being used for carrying the heavy object is connected to tractor lifting arm, and tractor lifting arm plays a support transition effect between the pneumatic cylinder and carrying the heavy object, with the power transmission of pneumatic cylinder to carry on the heavy object to lift up carrying the heavy object from ground. The first connecting arm 21 of the lifting arm is hinged with the hydraulic cylinder, the second connecting arm is hinged with one end of the heavy object-carrying connecting rod, the other end of the heavy object-carrying connecting rod is connected with an agricultural implement or a towed object, the tail end 11 of the main body part is provided with a main connecting hole 12, and the main connecting hole 12 is arranged as a spline shaft mounting hole. The terminal 11 of main part passes through integral key shaft assembly transmission shaft, and the transmission shaft both ends respectively set up one the utility model discloses a tractor lifting arm can make two lifting arms realize synchronous lifting or decline under the effect of the pneumatic cylinder that corresponds separately.
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (8)
1. A tractor lift arm, comprising: a main body part and a branch part,
the tail end of the main body part is provided with a main connecting hole;
the branch part comprises a first lifting arm used for connecting a hydraulic cylinder and a second lifting arm used for connecting a load-carrying connecting rod, the tail end of the second lifting arm is provided with a first connecting lug and a second connecting lug which are opposite, the first lifting arm is provided with a first connecting hole, and the first connecting lug and the second connecting lug are respectively provided with a second connecting hole and a third connecting hole which are used for installing the same articulated piece;
a first avoidance area is arranged between the first lifting arm and the second lifting arm, and a second avoidance area is arranged between the first connecting lug and the second connecting lug;
the top surface of the first lifting arm and the top surface of the second lifting arm are in a common arc surface, and the bottom surface of the first lifting arm and the bottom surface of the second lifting arm are in a common arc surface;
the top surface of the lift arm is provided with a reinforcing rib extending from the distal end of the main body portion to the branch portion.
2. The tractor lift arm of claim 1, wherein the length of the first lift arm is less than the length of the second lift arm.
3. The tractor lift arm of claim 1, wherein the first lift arm is configured with a first square at the distal end, a second square at the first tab, and a third square at the second tab, the first square having a first arc transition angle coupled to the top surface of the first lift arm, the second square having a second arc transition angle coupled to the top surface of the second lift arm, and the third square having a third arc transition angle coupled to the top surface of the second lift arm.
4. The tractor lift arm of claim 3, wherein the reinforcing ribs include a first reinforcing rib extending from the end of the main body portion to the first arc transition angle junction with the top surface of the first lift arm, a second reinforcing rib extending from the end of the main body portion to the second arc transition angle junction with the top surface of the second lift arm, and a third reinforcing rib extending from the end of the main body portion to the third arc transition angle junction with the top surface of the second lift arm.
5. The tractor lift arm of claim 1, wherein the outboard end face of the second engaging lug is provided with a bolt rotation preventing groove.
6. The tractor lifting arm of claim 1, wherein the end of the first lifting arm is provided with an oil nozzle hole, the oil nozzle hole is communicated with a first connecting hole on the first lifting arm, a copper sleeve is arranged in the first connecting hole, and the copper sleeve is provided with an oil groove and an oil inlet corresponding to the oil nozzle hole.
7. The tractor lift arm of claim 1, wherein the primary attachment hole is configured as a spline shaft mounting hole.
8. The tractor lift arm of any one of claims 1 to 7, wherein the tractor lift arm is cast from ductile iron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120636752.2U CN215121865U (en) | 2021-03-29 | 2021-03-29 | Tractor lifting arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120636752.2U CN215121865U (en) | 2021-03-29 | 2021-03-29 | Tractor lifting arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215121865U true CN215121865U (en) | 2021-12-14 |
Family
ID=79353857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120636752.2U Active CN215121865U (en) | 2021-03-29 | 2021-03-29 | Tractor lifting arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215121865U (en) |
-
2021
- 2021-03-29 CN CN202120636752.2U patent/CN215121865U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201288344Y (en) | Simple high-strength agricultural loader | |
| US4151920A (en) | Vehicle main frame | |
| CN215121865U (en) | Tractor lifting arm | |
| CN1136107C (en) | Coupling device between a towing vehicle, especially an agricultural tractor and a trainler | |
| CN214523226U (en) | Universal trailer towing bar for special vehicle | |
| CN209594234U (en) | A kind of suspension hydraulic lift | |
| CN210825195U (en) | Agricultural tractor lifting device | |
| CN210900265U (en) | Support and integrated device for lifting, hanging and towing tractor | |
| CN209824370U (en) | Tractor lifting device | |
| CN204823953U (en) | Single -beam crane european style dolly wire rope fixed structure | |
| CN210885032U (en) | Auxiliary jib angle changing device for medium and small tonnage truck crane | |
| CN218806090U (en) | Left knuckle arm | |
| CN201850570U (en) | Machine and quick-change device thereof | |
| CN216994502U (en) | Tractor frame | |
| CN214430005U (en) | Lower pull rod for tractor and tractor comprising same | |
| CN219952071U (en) | Agricultural dig quick-witted support frame | |
| CN213628240U (en) | Front top cylinder lower hinge shaft reinforced assembly structure and heavy front top cylinder | |
| CN218788914U (en) | Reinforced hydraulic turnover plowshare welding joint | |
| CN212796403U (en) | Arrangement structure of steering oil cylinder and shell of front drive axle special for greenhouse tractor | |
| CN220923974U (en) | Pedaling ladder of port tractor | |
| CN216475275U (en) | Wood dragging device of forestry excavator | |
| CN212910694U (en) | Hydraulic suspension mechanism of tractor | |
| CN221137831U (en) | Lightweight high-strength oil jack overturning supporting beam | |
| CN218453914U (en) | Waist-hole type steel pipe anti-twisting anti-retreating buckle device for pin hole connection | |
| CN220402445U (en) | Self-rescue improved structure of crawler harvester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 261307 south head of Weizi Town, Changyi City, Weifang City, Shandong Province Patentee after: Shandong Haoxin Machinery Co.,Ltd. Country or region after: China Address before: 261307 south head of Weizi Town, Changyi City, Weifang City, Shandong Province Patentee before: SHANDONG HAOXIN MACHINERY Co.,Ltd. Country or region before: China |