Loader and telescopic arm of loader
By designing a multi-stage telescopic arm structure and a loader telescopic arm that combines the oil cylinder and leveling mechanism, the problems of poor balance and cumbersome replacement of the existing loader telescopic arm are solved, the flexibility and stability of the telescopic arm are achieved, and the replacement process is simplified.
Patent Information
- Application Number
- CN202422023957.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The existing loader telescopic arms have poor balance when stretching and shrinking, and are complicated to replace.
A loader telescopic arm is designed, including a support base, telescopic arm body and a driving mechanism. The telescopic arm body adopts a multi-stage telescopic arm structure, combining a swing cylinder, a follow-up cylinder and a leveling mechanism to ensure that the equipment is always in balance during the lifting process, and the equipment replacement process is simplified through a quick change mechanism.
The flexibility of the telescopic arm structure and driving stability are achieved, the balance and loading stability of the equipment are improved, and the replacement process of the equipment is simplified.
Smart Images
Figure CN222936068U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of loaders, and more specifically, relates to a loader and a telescopic arm of a loader. Background Art
[0002] A loader is an earthwork construction machine applied to construction projects. It is mainly used for shoveling bulk materials such as soil, sand, gravel, lime, and coal, and can also perform light shoveling operations on ores and hard soils. By replacing different auxiliary working attachment devices, it can also perform operations such as bulldozing, lifting, and loading and unloading of other materials.
[0003] When the existing telescopic arm of a loader performs extension and retraction actions, the attachment will perform actions such as lifting and rotating under the action of the telescopic arm and the drive structure. However, when the loader attachment is in operation, the attachment cannot always maintain a balanced state, and the balance is poor. Therefore, when loading goods or operating improperly, the attachment is prone to losing balance; and the connection of the existing loader attachment is relatively complex, and when it is necessary to replace different attachments for use, the replacement is relatively cumbersome. Summary of the Utility Model
[0004] The utility model aims at the technical problems existing in the prior art and provides a loader and a telescopic arm of a loader.
[0005] To solve the above technical problems, the utility model first provides a telescopic arm of a loader, which includes a support base, a telescopic arm main body, and a drive mechanism. The telescopic arm main body includes a multi-stage telescopic arm structure. The first end of the telescopic arm main body is hinged to the support base, and a link mechanism is connected to the second end of the telescopic arm main body. A swing cylinder and a follow-up cylinder for driving the telescopic arm main body to lift are connected to the support base. The ends of the swing cylinder and the follow-up cylinder are both connected to the telescopic arm main body. A leveling mechanism that is interlocked with the follow-up cylinder is also connected to the telescopic arm main body, and the leveling mechanism is connected to the link mechanism.
[0006] Preferably, the leveling mechanism includes a leveling cylinder, which moves at the same time, the same distance, and the same speed as the follow-up cylinder. The first end of the leveling cylinder is hinged to the telescopic arm main body, and the second end of the leveling cylinder is hinged to the link mechanism.
[0007] Preferably, the telescopic arm main body includes a first-stage arm, a second-stage arm, and a third-stage arm.
[0008] Preferably, the ends of the swing cylinder and the follow-up cylinder are hinged to the first-stage arm, the first end of the leveling mechanism is hinged to the third-stage arm, and the second end of the leveling mechanism is hinged to the link mechanism.
[0009] Preferably, the drive mechanism includes a telescopic cylinder and a telescopic transmission part. The first end of the telescopic cylinder is hinged to the first-stage arm, the second end of the telescopic cylinder is hinged to the second-stage arm, and the telescopic transmission part is hinged to the telescopic arm main body and drives the telescopic arm main body to expand and contract.
[0010] Preferably, the linkage mechanism is arranged at the end of the third-stage boom. The linkage mechanism includes a first link and a second link. The first end of the first link is hinged to the leveling mechanism, and the second end of the first link is hinged to the second link.
[0011] Preferably, a quick-change mechanism is connected to the end of the linkage mechanism. The quick-change mechanism includes a quick-change support plate and a quick-change driving part connected to the quick-change support plate. A quick-change support part is connected to the quick-change support plate, and the quick-change mechanism is connected to the linkage mechanism through the quick-change support part.
[0012] Preferably, the quick-change support plate includes a quick-change bent plate and a quick-change end plate arranged at the end of the quick-change bent plate. The quick-change driving part is connected to the quick-change bent plate and its end passes through the quick-change end plate. A quick-change fixing plate is connected to the quick-change bent plate, and the quick-change support part is arranged on the quick-change fixing plate.
[0013] The present utility model also provides a wheel loader, which includes a vehicle body and a telescopic boom. A cab is arranged on the vehicle body. The telescopic boom is connected to an attachment through a quick-change mechanism. The vehicle body includes a front vehicle body and a rear vehicle body. The front vehicle body is movably connected to the rear vehicle body, and the telescopic boom is arranged on the front vehicle body through a support base.
[0014] Preferably, the front vehicle body is hinged to the rear vehicle body. A steering driving mechanism is connected to the front vehicle body, and the steering driving mechanism is hinged to the support base.
[0015] Compared with the prior art, the present utility model has the following beneficial effects:
[0016] The telescopic boom structure of the present utility model is flexible, has stable driving and high safety. By connecting a swing cylinder and a follow-up cylinder to the support base, both the swing cylinder and the follow-up cylinder are connected to the telescopic boom main body. The swing cylinder drives the telescopic boom main body to lift. While the telescopic boom main body lifts, it drives the follow-up cylinder to extend. And a leveling mechanism interlocked with the follow-up cylinder is connected to the telescopic boom main body, so as to ensure that the leveling mechanism moves synchronously, equidistantly and at the same speed as the follow-up cylinder. Furthermore, when the attachment connected to the telescopic boom main body is lifted up and down, at the top end of the lift and at the bottom end of the lift, the attachment is always in a balanced state, realizing the functions of leveling, lifting and lowering flat of the wheel loader. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0018] Figure 1 It is a schematic structural diagram of the telescopic boom of the wheel loader of the present utility model;
[0019] Figure 2 It is a schematic structural view of the telescopic boom main body of the present utility model;
[0020] Figure 3 It is a front view structural schematic diagram of the loader during the lifting process of the present utility model;
[0021] Figure 4 It is a partial sectional view structural schematic diagram of the loader during the lifting process of the present utility model;
[0022] Figure 5 It is a hydraulic system control diagram of the leveling oil cylinder and the follow-up oil cylinder of the present utility model;
[0023] Figure 6 It is a schematic structural view of the quick-change mechanism of the present utility model;
[0024] Figure 7 It is a schematic structural view of the connection between the quick-change mechanism and the attachment of the present utility model;
[0025] Figure 8 It is a top view structural schematic diagram of the vehicle body of the present utility model;
[0026] Figure 9 It is a schematic diagram of the telescopic boom in the deployed state with the attachment being a forklift of the present utility model;
[0027] Figure 10 It is a schematic diagram of the telescopic boom in the deployed state with the attachment being a hopper of the present utility model;
[0028] Figure 11 It is a schematic structural view of the forklift of the present utility model.
[0029] Explanation of the symbol markings in the figure:
[0030] 1. Support base; 2. Telescopic boom main body; 21. First-stage arm; 22. Second-stage arm; 23. Third-stage arm; 3. Linkage mechanism; 31. First link; 32. Second link; 4. Swing amplitude oil cylinder; 5. Follow-up oil cylinder; 6. Leveling mechanism; 61. Leveling oil cylinder; 7. Attachment; 71. Hopper; 72. Forklift; 721. Forklift support frame; 722. Forklift unit; 723. Retaining frame; 724. Second support pipe; 725. Fixed hole; 8. Telescopic oil cylinder; 9. Hydraulic oil pipe; 10. Driving sprocket; 11. Arm-out chain; 12. Arm-back chain; 13. Nylon wheel; 14. Main valve; 15. Balance valve; 16. Pump; 17. Quick-change mechanism; 171. Quick-change bent plate; 172. Quick-change end plate; 173. Quick-change rectangular pipe; 174. Quick-change oil cylinder; 175. Quick-change fixed plate; 176. Quick-change support pipe; 177. First support pipe; 18. Support plate; 19. Cab; 20. Vehicle body; 201. Front vehicle body; 202. Rear vehicle body; 24. Steering oil cylinder. Detailed implementation mode
[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the following further details a loader and a telescopic arm of a loader provided by the present application in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0032] Please refer to Figure 1 , the present utility model first provides a telescopic arm of a loader, including a support base 1, a telescopic arm main body 2 and a driving mechanism. The telescopic arm main body 2 includes a multi-stage telescopic arm structure. The first end of the telescopic arm main body 2 is hinged to the support base 1, and a linkage mechanism 3 is connected to the second end of the telescopic arm main body 2. A swing cylinder 4 and a follow-up cylinder 5 for driving the telescopic arm main body 2 to lift are connected to the support base 1. The ends of the swing cylinder 4 and the follow-up cylinder 5 are both connected to the telescopic arm main body 2. A leveling mechanism 6 that is interlocked with the follow-up cylinder 5 is also connected to the telescopic arm main body 2. The leveling mechanism 6 is connected to the linkage mechanism 3.
[0033] The telescopic arm structure of the present utility model is flexible, has stable driving and high safety. By connecting the swing cylinder 4 and the follow-up cylinder 5 to the support base 1, both the swing cylinder 4 and the follow-up cylinder 5 are connected to the telescopic arm main body 2. The swing cylinder 4 drives the telescopic arm main body 2 to lift. When the telescopic arm main body 2 lifts, it drives the follow-up cylinder 5 to extend. And a leveling mechanism 6 that is interlocked with the follow-up cylinder 5 is connected to the telescopic arm main body 2, so as to ensure that the leveling mechanism 6 moves synchronously, equidistantly and at the same speed as the follow-up cylinder. Furthermore, when the attachment 7 connected to the telescopic arm main body 2 is lifted up and down, at the top end and at the bottom end of the lift, the attachment 7 is always in a balanced state, realizing the functions of leveling, lifting and laying flat of the loader.
[0034] Specifically, as Figure 2 shown, the telescopic arm main body 2 includes a first-stage arm 21, a second-stage arm 22 and a third-stage arm 23. The first-stage arm 21, the second-stage arm 22 and the third-stage arm 23 are all hollow frame support arm structures. The end of the first-stage arm 21 is hinged to the support base 1, and the other end of the first-stage arm 21 is connected to the second-stage arm 22. The second-stage arm 22 is arranged inside the first-stage arm 21 and the second-stage arm 22 can telescopically move inside the first-stage arm 21. And the end of the second-stage arm 22 is connected to the third-stage arm 23. The third-stage arm 23 is arranged inside the second-stage arm 22 and the third-stage arm 23 can telescopically move inside the second-stage arm 22, so as to realize the telescopic movement of the telescopic arm under the driving action of the driving mechanism.
[0035] As Figure 3 , Figure 4As shown in the figure, in this embodiment, the driving mechanism includes a telescopic oil cylinder 8, a telescopic transmission part and a hydraulic oil pipe 9. The telescopic transmission part includes a transmission sprocket 10 and a transmission chain. The transmission chain includes an outrigger chain 11 and a retracting chain 12. The telescopic oil cylinder 8 is arranged along the axial direction of the telescopic boom main body 2 and is arranged on the upper part of the first-stage boom 21. The first end of the telescopic oil cylinder 8 is hinged to the first-stage boom 21, and the second end of the telescopic oil cylinder 8 is hinged to the second-stage boom 22. One end of the outrigger chain 11 is hinged to the third-stage boom 23, and the other end of the outrigger chain 11 bypasses the transmission sprocket 10 and is hinged to the first-stage boom 21. One end of the retracting chain 12 is hinged to the third-stage boom 23, and the other end of the retracting chain 1218 is hinged to the first-stage boom 21. The transmission sprocket 10 is hinged to the second-stage boom 22.
[0036] Specifically, when the telescopic boom needs to extend, the telescopic oil cylinder 8 extends, thereby driving the second-stage boom 22 to extend. At the same time, under the action of the outrigger chain 11 and the transmission sprocket 10, the third-stage boom 23 is driven to extend synchronously. When the telescopic boom needs to retract, the telescopic oil cylinder 8 shortens, thereby driving the second-stage boom 22 to shorten. At the same time, under the action of the retracting chain 12 and the transmission sprocket 10, the third-stage boom 23 is driven to contract synchronously.
[0037] In this embodiment, the hydraulic oil pipe 9 is arranged inside. One end of the hydraulic oil pipe 9 is hinged to the first-stage boom 21, and the other end of the hydraulic oil pipe 9 bypasses the arranged nylon wheel 13 and is connected to the first-stage boom 21. Under the action of the telescopic oil cylinder 8, when the telescopic boom contracts, the hydraulic oil pipe 9 follows to contract. Adopting an internal hydraulic oil pipe can make the appearance of the telescopic boom more tidy.
[0038] As Figure 3 shown, the leveling mechanism includes a leveling oil cylinder 61. The leveling oil cylinder 61 is arranged at the lower part of the third-stage boom 23. The first end of the leveling oil cylinder 61 is hinged to the third-stage boom 23 of the telescopic boom main body 2, and the second end of the leveling oil cylinder 61 is hinged to the link mechanism 3. Thus, the leveling oil cylinder 61 can drive the link mechanism 3 to act. When the telescopic boom rises from the lowest point to the highest point, the leveling oil cylinder 61 shortens. When the telescopic boom descends from the highest point to the lowest point, the leveling oil cylinder 61 extends. When the leveling oil cylinder 61 shortens, it can drive the link mechanism 3 at its end and the components thereon to perform a flipping action.
[0039] Specifically, the swing oil cylinder 4 and the follow-up oil cylinder 5 are both arranged on the first-stage boom 21 of the telescopic boom main body 2. The swing oil cylinder 4 is arranged at the lower part of the first-stage boom 21, and the follow-up oil cylinder 5 is arranged on the side of the first-stage boom 21. One ends of the swing oil cylinder 4 and the follow-up oil cylinder 5 are both hinged to the first-stage boom 21, and the other ends of the swing oil cylinder 4 and the follow-up oil cylinder 5 are respectively hinged to the support base 1. Moreover, the swing oil cylinder 4 is an active oil cylinder for lifting the telescopic boom main body 2, and the follow-up oil cylinder 5 is a passive oil cylinder. The lifting of the telescopic boom main body 2 drives the follow-up oil cylinder 5 to extend.
[0040] Furthermore, in this embodiment, the leveling cylinder 61 and the follower cylinder 5 are linked to each other, the oil inlet chamber of the follower cylinder 5 is connected to the oil inlet chamber of the leveling cylinder 61, and the oil outlet chamber of the follower cylinder 5 is connected to the oil outlet chamber of the leveling cylinder 61, and the leveling cylinder 61 and the follower cylinder 5 realize isochronous, isometric, and isospeed motion. The swing cylinder 4 can drive the telescopic arm body 2 to lift, and the telescopic arm body 2 drives the follower cylinder 5 to extend while lifting. The follower cylinder 5 is linked to the leveling cylinder 61, so that the attachment 7 of the loader is always in a balanced state when the telescopic arm body 21 is lifted up and down, lifted to the top, and lifted to the bottom, realizing the loader's leveling, lifting, and leveling functions, and stable loading.
[0041] Furthermore, Figure 5 As shown, a main valve 14 is also provided on the telescopic arm of the loader. The main valve 14 is a three-position six-way reversing valve. When it is necessary to unload separately, the accessories connected to the telescopic arm body 2 can be turned over by operating the main valve 14 alone. The follower cylinder 5 and the leveling cylinder 61 are interconnected and connected to the pump 16 through the balance valve 15 and the main valve 14. The main valve 14 contains a secondary overflow, which can enable the telescopic arm to be raised and lowered independently without the linkage of the leveling cylinder 61.
[0042] In this embodiment, the connecting rod mechanism 3 is arranged at the end of the three-stage arm 23, and the end of the connecting rod mechanism 3 is connected with a quick-change mechanism 17, and the telescopic arm body 2 is detachably connected to the attachment 7 used through the quick-change mechanism 17.
[0043] Specifically, Figure 3 As shown, the first-stage arm 21 at the bottom end of the telescopic arm body 2 is hinged to the support base 1, and a support plate 18 is welded and fixed to the end of the tertiary arm 23 at the top of the telescopic arm body 2. The support plate 18 is a curved plate-like structure. Two support plates 18 are provided, which are respectively arranged on both sides of the end of the tertiary arm 23. The other ends of the two support plates 18 are hinged to the quick-change mechanism 17. The connecting rod mechanism 3 is arranged between the two support plates 18 and at the lower part of the tertiary arm 23 and connected to the leveling cylinder 61.
[0044] In this embodiment, Figure 4 As shown, the connecting rod mechanism 3 includes a first connecting rod 31 and a second connecting rod 32, the first connecting rod 31 and the second connecting rod 32 are hingedly arranged up and down, and the upper end of the first connecting rod 31 is hinged to the leveling cylinder 61, the lower end of the first connecting rod 31 is hinged to the end of the second connecting rod 32, the middle part of the first connecting rod 31 is hinged to the support plate 18, the upper end of the second connecting rod 32 is hinged to the first connecting rod 31, and the lower end of the second connecting rod 32 is hinged to the quick-change mechanism 17. When the leveling cylinder 61 is shortened, the attachment 7 is driven to flip through the first connecting rod 31, the second connecting rod 32 and the quick-change mechanism 17.
[0045] In this embodiment, the quick-change mechanism 17 includes a quick-change support plate and a quick-change driving part connected to the quick-change support plate. A quick-change supporting part is connected to the quick-change support plate, and the quick-change mechanism is connected to the link mechanism 3 through the quick-change supporting part.
[0046] Specifically, as Figure 6 shown, the quick-change support plate includes a quick-change bent plate 171 which is transversely arranged, and quick-change end plates 172 are connected to both ends of the quick-change bent plate 171. A quick-change square tube 173 is connected to the quick-change bent plate 171. The quick-change driving part includes a quick-change oil cylinder 174 which is transversely arranged between the two quick-change end plates 172. The middle part of the quick-change oil cylinder 174 is connected to the quick-change bent plate 171 through the quick-change square tube 173, and the quick-change oil cylinder 174 is arranged in parallel with the quick-change square tube 173. The two end parts of the quick-change oil cylinder 174 extend through the quick-change end plates 172 and then are connected to the attachment 7.
[0047] Furthermore, as Figure 6 、 Figure 7 shown, a quick-change fixing plate 175 is connected to the other side of the quick-change bent plate 171. There are two quick-change fixing plates 175 which are arranged in parallel with each other. A quick-change supporting part is horizontally connected between the upper parts of the two quick-change fixing plates 175. The quick-change supporting part includes a quick-change support tube 176. The quick-change mechanism 17 is hinged to the end part of the second link 32 through the quick-change support tube 176. A first support tube 177 is horizontally connected to the lower parts of the two quick-change fixing plates 175, and the two end parts of the first support tube 177 are connected to the support plate 18.
[0048] Furthermore, in this embodiment, hook parts are arranged at the upper ends of the two quick-change end plates 172, and the quick-change mechanism 17 is connected to the attachment 7 through the hook parts of the quick-change end plates 172.
[0049] Furthermore, as Figures 8 - 10 shown, the present utility model also provides a wheel loader, which includes a vehicle body 20 and a telescopic boom. A cab 19 is arranged on the vehicle body 20. The telescopic boom is connected to the attachment 7 through the quick-change mechanism 17. The vehicle body 20 includes a front vehicle body 201 and a rear vehicle body 202. The front vehicle body 201 is movably connected to the rear vehicle body 202. The telescopic boom is arranged on the front vehicle body 201 through a support base 1, and the support base 1 is hinged to the vehicle body 20.
[0050] Specifically, the front vehicle body 201 is hinged to the rear vehicle body 202. A steering driving mechanism is connected to the front vehicle body 201, and the end part of the steering driving mechanism is hinged to the support base 1. The steering driving mechanism includes a steering oil cylinder 24. One end of the steering oil cylinder 24 is hinged to the support base 1, and the other end of the steering oil cylinder 24 is hinged to the rear vehicle body 202.
[0051] In the present utility model, the front body 201 and the rear body 202 of the vehicle body are movably connected and can rotate relative to each other, making the vehicle body more suitable for operations in harsh environments such as mountains and depressions. At the same time, articulated steering reduces the failure rate of the steering drive mechanism. The vehicle body is four-wheel drive, with strong off-road ability.
[0052] As Figure 8 shown, the cab 19 is arranged on the rear body 202, so that the telescopic boom main body 2 is arranged on the front side of the cab 19, facilitating the operator to observe the specific operations.
[0053] In this embodiment, the attachment 7 is a hopper 71, a forklift fork 72 or other attachments used according to construction requirements. As Figure 11 shown, the structural schematic diagram of the attachment being a forklift fork 72. The forklift fork 72 includes a forklift fork support frame 721. The front end of the forklift fork support frame 721 is fixedly connected with a forklift fork unit 722. A retaining frame 723 is connected to the upper part of the forklift fork support frame 721. A second support pipe 724 is connected to the side of the forklift fork support frame 721 away from the forklift fork unit 722. The forklift fork 72 is hook-connected to the engaging part on the upper part of the quick-change end plate 172 through the second support pipe 724. A fixing hole 725 is provided on the forklift fork support frame 721. The telescopic end of the quick-change oil cylinder 174 of the quick-change mechanism 17 extends into the fixing hole 725. The telescopic boom realizes quick connection with the forklift fork 72 and can replace different attachments as needed through the quick-change mechanism 17. The attachment connection is simple, and the attachment replacement is simple, fast and convenient.
[0054] Furthermore, in this embodiment, each oil cylinder adopted includes a cylinder barrel, a cylinder rod and a hydraulic pipeline. Its structure is prior art, and the present utility model will not elaborate on the specific structure and position connection relationship of each structure.
[0055] The present utility model provides a loader and a telescopic boom of a loader, with diversified functions, flexible structure and high safety. By connecting a swing oil cylinder 4 and a follow-up oil cylinder 5 to the support base 1, both the swing oil cylinder 4 and the follow-up oil cylinder 5 are connected to the telescopic boom main body 2. The swing oil cylinder 4 drives the telescopic boom main body 2 to lift. While the telescopic boom main body 2 is lifting, it drives the follow-up oil cylinder 5 to extend. And a leveling oil cylinder 61 that is interlocked with the follow-up oil cylinder 5 is connected to the telescopic boom main body 2, so as to ensure that the leveling oil cylinder 61 and the follow-up oil cylinder 5 move synchronously, equidistantly and at the same speed. Furthermore, when the attachment 7 connected to the telescopic boom main body 2 is lifted up and down, lifted to the top, or lowered to the bottom, the attachment is always in a balanced state, realizing the leveling, lifting and lowering functions of the loader. Moreover, the front body 201 and the rear body 202 of the vehicle body are hinged to each other and can rotate relative to each other, making the vehicle body more suitable for operations in harsh environments such as mountains and depressions. At the same time, articulated steering reduces the failure rate of the steering drive mechanism.
[0056] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.
[0057] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically defined.
[0058] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.
Claims
1. A telescopic arm of a loader, comprising a supporting base, a telescopic arm body and a driving mechanism, wherein the telescopic arm body comprises a multi-stage telescopic arm structure, characterized in that: The first end of the telescopic arm body is hinged to the support base, the second end of the telescopic arm body is connected to a connecting rod mechanism, the support base is connected to a swing cylinder and a follower cylinder for lifting the telescopic arm body, the ends of the swing cylinder and the follower cylinder are connected to the telescopic arm body, the telescopic arm body is also connected to a leveling mechanism that is linked to the follower cylinder, and the leveling mechanism is connected to the connecting rod mechanism.
2. The telescopic arm of a loader according to claim 1, characterized in that: The leveling mechanism comprises a leveling cylinder, which moves with the follower cylinder at the same time, distance and speed, a first end of which is hinged to the telescopic arm body, and a second end of which is hinged to the connecting rod mechanism.
3. The telescopic arm of a loader according to claim 1, characterized in that: The telescopic arm body comprises a primary arm, a secondary arm and a tertiary arm.
4. The telescopic arm of a loader according to claim 3, characterized in that: The ends of the swing cylinder and the follower cylinder are hinged to the primary arm, the first end of the leveling mechanism is hinged to the tertiary arm, and the second end of the leveling mechanism is hinged to the connecting rod mechanism.
5. The telescopic arm of a loader according to claim 3, characterized in that: The driving mechanism includes a telescopic cylinder and a telescopic transmission part. The first end of the telescopic cylinder is hinged to the primary arm, the second end of the telescopic cylinder is hinged to the secondary arm, and the telescopic transmission part is hinged to the telescopic arm body and drives the telescopic arm body to extend and retract.
6. The telescopic arm of a loader according to claim 3, characterized in that: The link mechanism is arranged at the end of the three-stage arm, and the link mechanism includes a first link and a second link. The first end of the first link is hinged to the leveling mechanism, and the second end of the first link is hinged to the second link.
7. A loader telescopic arm according to any one of claims 1 to 6, characterized in that: The end of the connecting rod mechanism is connected to a quick-change mechanism, and the quick-change mechanism includes a quick-change support plate and a quick-change drive part connected to the quick-change support plate. The quick-change support plate is connected to a quick-change support part, and the quick-change mechanism is connected to the connecting rod mechanism through the quick-change support part.
8. The telescopic arm of a loader according to claim 7, characterized in that: The quick-change support plate includes a quick-change bending plate and a quick-change end plate arranged at the end of the quick-change bending plate, the quick-change driving part is connected to the quick-change bending plate and the end thereof passes through the quick-change end plate, the quick-change bending plate is connected to a quick-change fixing plate, and the quick-change support part is arranged on the quick-change fixing plate.
9. A loader, comprising a vehicle body and a telescopic arm, wherein a cab is arranged on the vehicle body, characterized in that: The telescopic arm is the telescopic arm of a loader according to any one of claims 1 to 8, the telescopic arm is connected to the attachment via a quick-change mechanism, the vehicle body comprises a front vehicle body and a rear vehicle body, the front vehicle body is movably connected to the rear vehicle body, and the telescopic arm is arranged on the front vehicle body via the support base.
10. A loader according to claim 9, characterized in that: The front vehicle body and the rear vehicle body are hinged to each other, a steering drive mechanism is connected to the front vehicle body, and the steering drive mechanism is hinged to the support base.