Forward-rotation six-connecting-rod working device and loading machine
By optimizing the forward-rotation six-link structure and hinge point distance, the problem of cargo drop during the loader cargo fork lifting is solved, and efficient and stable cargo transportation is achieved.
Patent Information
- Application Number
- CN202422621744.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-10-29
AI Technical Summary
When using cargo forks, the cargo forks is prone to flip angles during lifting, which leads to dropping of goods, inconvenient operation and low efficiency.
The forward-rotation six-link structure is adopted, and by optimizing the hinge point distance and boom cylinder drive, the auxiliary equipment assembly is flipped within the set angle range between the high position and the ground to avoid cargo falling.
It improves the working efficiency of the loader, reduces the difficulty of operation, and ensures the stability and safety of the cargo in high positions.
Smart Images
Figure CN223239709U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of loaders, in particular to a forward-rotating six-link working device and a loader. Background Art
[0002] The working mechanism of existing loaders generally features an inverted six-link structure, and its auxiliary tool is usually a bucket to perform shoveling and loading. However, for some special working conditions, the use of a fork is required. When the auxiliary tool is a fork, during operation, only the boom cylinder is operated to raise the fork from a low position to a high position. During this process, the fork tilts downward at a large angle, which can easily cause the cargo on the fork to fall. Therefore, the bucket cylinder needs to be operated to adjust the fork angle while the fork is raised, which is inconvenient and reduces work efficiency. Utility Model Content
[0003] The purpose of the utility model is to provide a forward-rotating six-link working device and a loader, which can improve work efficiency.
[0004] To achieve this purpose, the present invention adopts the following technical solutions:
[0005] The forward six-link working device includes a front frame, boom, rocker arm, tie rod, bucket cylinder, boom cylinder and auxiliary tool assembly;
[0006] Wherein, the boom is hinged between the front frame and the auxiliary tool assembly, the fixed end of the boom cylinder is hinged to the front frame, the output end of the boom cylinder is hinged to the boom, the fixed end of the bucket cylinder is hinged to the front frame, the output end of the bucket cylinder is hinged to the middle part of the rocker arm, one end of the rocker arm is hinged to the boom, the pull rod is hinged between the other end of the rocker arm and the auxiliary tool assembly, and the boom cylinder is used to drive the boom to rise or fall, so that the auxiliary tool assembly can be switched between a high position and a low position.
[0007] Assume that the hinge point between the boom and the front frame is A, the hinge point between the boom and the auxiliary tool assembly is B, the hinge point between the auxiliary tool assembly and the drawbar is C, the hinge point between the drawbar and the rocker arm is D, the hinge point between the output end of the bucket cylinder and the rocker arm is E, the hinge point between the rocker arm and the boom is F, the hinge point between the fixed end of the bucket cylinder and the front frame is G, the hinge point between the fixed end of the boom cylinder and the front frame is S, and the hinge point between the output end of the boom cylinder and the boom is Q. When the auxiliary tool assembly is in the low position, the distance from A to the ground is H, and the distance from B to the ground is I;
[0008] When AB=7.45EF, AQ=4.18EF, AF=5.46EF, DE=1.05EF, DF=2.05EF, BQ=3.31EF, BF=2EF, CD=2.58EF, BC=1.39EF, H=5.09EF, and I=0.61EF, the bucket cylinder maintains the set extension length GE unchanged, and when the auxiliary tool assembly switches from the low position to the high position, the auxiliary tool assembly can flip up and remain within the set angle range with the ground.
[0009] As an optional solution, when the auxiliary tool assembly is in the low position, the bucket cylinder extends the set length GE=5.51EF, the auxiliary tool assembly is parallel to the ground, and during the process of switching the auxiliary tool assembly from the low position to the high position, the set angle range between the auxiliary tool assembly and the ground is 0°-5°.
[0010] As an optional solution, the boom includes a crossbeam and two boom plates distributed at intervals, the crossbeam is connected between the two boom plates, the two boom plates are hinged between the front frame and the auxiliary tool assembly, and the crossbeam is hinged to one end of the rocker arm.
[0011] As an optional solution, the cross beam is located on a side of the boom plate close to the auxiliary tool assembly.
[0012] As an optional solution, the crossbeam is provided with a limiting pad, and the rocker arm is provided with a limiting plate. When the auxiliary tool assembly is in the high position, the bucket cylinder extends to cause the auxiliary tool assembly to unload, and the limiting plate can abut against the limiting pad.
[0013] As an optional solution, the limiting pad includes a main pad welded to the crossbeam and multiple auxiliary pads of different thickness specifications. One or more of the multiple auxiliary pads are optionally set on the main pad, and the limiting plate can abut against the auxiliary pad set on the main pad.
[0014] As an optional solution, the crossbeam includes a circular tube, which is connected between two boom plates. The main pad is provided with an arc-shaped notch that matches the outer cylindrical surface of the circular tube. The main pad is welded to the circular tube through the arc-shaped notch and the outer cylindrical surface of the circular tube.
[0015] As an optional solution, the boom further includes a rib plate connected between the cross beam and the boom plate.
[0016] As an optional solution, the auxiliary tool assembly includes an auxiliary tool and a quick-change frame, the hinge point between the quick-change frame and the movable arm is B, the hinge point between the quick-change frame and the pull rod is C, and the auxiliary tool is detachably mounted on the quick-change frame.
[0017] The loader comprises the forward-rotating six-link working device and a vehicle body as described in any of the above schemes, wherein the front frame is arranged on the vehicle body.
[0018] Beneficial effects of the utility model:
[0019] The utility model provides a forward-rotating six-link working device. When the boom is driven by the boom cylinder to drive the auxiliary tool assembly to switch from a low position to a high position, the auxiliary tool assembly can be flipped upward; and by optimizing the distance between each hinge point, only the boom cylinder needs to be operated to ensure that the auxiliary tool assembly and the ground are always kept within a set angle range, thereby avoiding the falling of goods when the auxiliary tool assembly is in a high position and being able to maintain stability, reducing the requirements for operators and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a first schematic diagram of a forward-rotating six-link working device provided by an embodiment of the present utility model;
[0021] Figure 2 This is a second schematic diagram of a forward-rotating six-link working device provided by an embodiment of the present utility model;
[0022] Figure 3 It is a structural schematic diagram of the movable arm involved in the embodiment of the present utility model;
[0023] Figure 4 It is a structural schematic diagram of the rocker arm involved in the embodiment of the present utility model;
[0024] Figure 5 It is a structural diagram of the main pad involved in the embodiment of the present utility model;
[0025] Figure 6 It is a structural schematic diagram of the auxiliary pad involved in the embodiment of the present utility model.
[0026] In the picture:
[0027] 1. Front frame; 2. Boom; 21. Boom plate; 211. Round span; 22. Crossbeam; 221. Round tube; 222. Connecting plate; 23. Limiting pad; 231. Main pad; 2311. Arc notch; 232. Auxiliary pad; 24. Rib plate; 3. Rocker arm; 31. Limiting plate; 4. Pull rod; 5. Bucket cylinder; 6. Boom cylinder; 7. Auxiliary tool assembly; 71. Auxiliary tool; 72. Quick-change frame. DETAILED DESCRIPTION
[0028] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0029] In the description of this utility model, unless otherwise expressly specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, mechanical or electrical connections, direct or indirect connections through an intermediate medium, and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0030] In the description of the present utility model, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0031] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.
[0032] like Figure 1-Figure 2 As shown, an embodiment of the utility model provides a forward-rotating six-link working device, which is used to solve the problem that when the auxiliary tool assembly 7 switches from a low position to a high position, the auxiliary tool assembly 7 can be flipped up within a set angle range by only operating the boom cylinder 6 to prevent the cargo from falling.
[0033] Specifically, the forward-rotating six-link working device includes a front frame 1 , a boom 2 , a rocker arm 3 , a pull rod 4 , a bucket cylinder 5 , a boom cylinder 6 and an auxiliary tool assembly 7 .
[0034] Among them, the boom 2 is hinged between the front frame 1 and the auxiliary tool assembly 7, the fixed end of the boom cylinder 6 is hinged to the front frame 1, the output end of the boom cylinder 6 is hinged to the boom 2, the fixed end of the bucket cylinder 5 is hinged to the front frame 1, the output end of the bucket cylinder 5 is hinged to the middle part of the rocker arm 3, one end of the rocker arm 3 is hinged to the boom 2, and the pull rod 4 is hinged between the other end of the rocker arm 3 and the auxiliary tool assembly 7. The boom cylinder 6 is used to drive the boom 2 to rise or fall so that the auxiliary tool assembly 7 can switch between a high position and a low position.
[0035] Set the hinge point of the boom 2 and the front frame 1 to be A, the hinge point of the boom 2 and the auxiliary tool assembly 7 to be B, the hinge point of the auxiliary tool assembly 7 and the draw rod 4 to be C, the hinge point of the draw rod 4 and the rocker arm 3 to be D, the hinge point of the output end of the bucket cylinder 5 and the rocker arm 3 to be E, the hinge point of the rocker arm 3 and the boom 2 to be F, the hinge point of the fixed end of the bucket cylinder 5 and the front frame 1 to be G, the hinge point of the fixed end of the boom cylinder 6 and the front frame 1 to be S, the hinge point of the output end of the boom cylinder 6 and the boom 2 to be Q. When the auxiliary tool assembly 7 is in the low position, the distance from A to the ground is H, and the distance from B to the ground is I.
[0036] When the following requirements are met between each hinge point, namely AB=7.45EF, AQ=4.18EF, AF=5.46EF, DE=1.05EF, DF=2.05EF, BQ=3.31EF, BF=2EF, CD=2.58EF, BC=1.39EF, H=5.09EF, I=0.61EF, when the boom cylinder 6 drives the boom 2 to drive the auxiliary tool assembly 7 to switch from a low position to a high position, the bucket cylinder 5 maintains the set extension length GE unchanged, and the auxiliary tool assembly 7 can flip up and maintain it within the set angle range with the ground.
[0037] When the forward-rotating six-link working device drives the boom 2 to drive the auxiliary tool assembly 7 to switch from a low position to a high position through the boom cylinder 6, the auxiliary tool assembly 7 can be flipped upward; and by optimizing the distance between each hinge point, only the boom cylinder 6 needs to be operated to ensure that the auxiliary tool assembly 7 and the ground are always kept within the set angle range, thereby avoiding the falling of goods when the auxiliary tool assembly 7 is in a high position and being able to maintain stability, reducing the requirements for operators and improving work efficiency.
[0038] Optionally, the auxiliary tool assembly 7 includes an auxiliary tool 71 and a quick-change frame 72. The hinge point between the quick-change frame 72 and the boom 2 is B, and the hinge point between the quick-change frame 72 and the pull rod 4 is C. The auxiliary tool 71 is detachably mounted on the quick-change frame 72. In this embodiment, the auxiliary tool 71 can be a fork or a bucket. When the auxiliary tool 71 is configured as a fork, the forward-rotating six-link working device only operates the boom cylinder 6 to switch the fork from a low position to a high position, and the cargo on the fork will not fall off.
[0039] In actual operation, when the auxiliary tool 71 is in the low position, the auxiliary tool 71 needs to be kept parallel to the ground. When the auxiliary tool 71 in the auxiliary tool assembly 7 is a fork, the fork is kept parallel to the ground, that is, the angle between the fork tines and the ground is 0°. In order to keep the auxiliary tool 71 parallel to the ground in the low position, the set length GE of the bucket cylinder 5 is extended to 5.51GF. When the auxiliary tool 71 switches from the low position to the high position, the set angle range between the auxiliary tool 71 and the ground is 0°-5°, that is, flipping is achieved.
[0040] In addition, when the auxiliary tool 71 is in the high position, the angle between the auxiliary tool 71 and the ground is 3°, which avoids the situation where the angle between the auxiliary tool 71 and the ground is negative due to error and causes the goods to fall.
[0041] Specifically, if Figure 3-Figure 6 As shown, the boom 2 includes a crossbeam 22 and two spaced boom plates 21. The crossbeam 22 is connected between the two boom plates 21. Both boom plates 21 are hinged between the front frame 1 and the auxiliary device 71. The crossbeam 22 is hinged to one end of the rocker arm 3. By hingedly connecting the crossbeam 22 to one end of the rocker arm 3, the structural design is made more reasonable.
[0042] More specifically, the crossbeam 22 includes a round tube 221 (made of steel) and two connecting plates 222 that are sleeved and welded on the round tube 221 at intervals. The two ends of the round tube 221 are respectively welded to two spaced-apart boom plates 21, and one end of the rocker arm 3 is hinged to the two connecting plates 222. The crossbeam 22 has a simple structure and a simple processing technology, low cost, and reduces the volume and weight of the boom 2, thereby reducing the fuel consumption of the entire machine.
[0043] In order to improve the loader's field of view, the crossbeam 22 is located on the side of the boom plate 21 close to the auxiliary tool assembly 7, so that the crossbeam 22 is away from the cab, which can provide a better field of view in the cab, reduce the probability of accidents and improve work efficiency.
[0044] Optionally, a limiting pad 23 is provided on the outer cylindrical surface of the circular tube 221 of the crossbeam 22, and a limiting plate 31 is provided on the rocker arm 3. When the auxiliary tool 71 is in a high position and the bucket cylinder 5 is extended to make the auxiliary tool 71 unload, the limiting plate 31 can abut against the limiting pad 23 to limit the maximum unloading angle of the auxiliary tool 71.
[0045] Specifically, the limiting pad 23 includes a main pad 231 welded to the outer surface of the circular tube 221 and a plurality of auxiliary pads 232 with different thickness specifications. In actual operation, one or more can be selected to be connected with the main pad 231 according to actual conditions. The main pad 231 and the auxiliary pad 232 can be connected by screws. When the bucket cylinder 5 drives the auxiliary tool 71 to unload, the limiting plate 31 can abut against the auxiliary pad 232.
[0046] In order to ensure that the main pad 231 is firmly connected to the outer circumferential surface of the circular tube 221, the main pad 231 is provided with an arc-shaped notch 2311 matching the outer circumferential surface of the circular tube 221. The arc-shaped notch 2311 is adhered to the outer circumferential surface of the circular tube 221 and welded to the circular tube 221.
[0047] In order to improve the connection firmness between the circular tube 221 and the boom plate 21, the boom 2 also includes a rib plate 24 connected between the circular tube 221 and the boom plate 21. Two rib plates 24 can be provided, one rib plate 24 is welded between the outer circumferential surface of the circular tube 221 and one boom plate 21, and the other rib plate 24 is welded between the outer circumferential surface of the circular tube 221 and the other boom plate 21.
[0048] In this embodiment, the boom 2 is a welded body. After the boom 2 is welded, its size will change. A round lap 211 is welded at the hinge point of the boom plate 21, and after the boom 2 is welded, the round lap 211 is subjected to secondary processing according to actual needs to compensate for the welding deformation.
[0049] In this embodiment, EF = 322 mm, then AB = 2398.9 mm, AQ = 1345.96 mm, AF = 1758.12 mm, DE = 338.1 mm, DF = 660.1 mm, BQ = 1065.82 mm, BF = 644 mm, CD = 830.76 mm, BC = 447.58 mm, H = 1638.98 mm, and I = 196.42 mm. When the assistive device 71 is in the lowered position and parallel to the ground, GE = 1774.22 mm.
[0050] An embodiment of the present utility model also provides a loader, including a vehicle body and the above-mentioned forward-rotating six-link working device, and a front frame 1 is arranged on the vehicle body. The loader is provided with a forward-rotating six-link working device, which can ensure that the cargo does not fall when assisting in switching from a low position to a high position, has simple operation and high work efficiency.
[0051] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.
Claims
1. The working device of the forward six-link is characterized by: It comprises a front frame (1), a movable arm (2), a rocker arm (3), a pull rod (4), a bucket cylinder (5), a movable arm cylinder (6) and an auxiliary tool assembly (7); wherein the boom (2) is hinged between the front frame (1) and the auxiliary tool assembly (7); the fixed end of the boom cylinder (6) is hinged to the front frame (1); the output end of the boom cylinder (6) is hinged to the boom (2); the fixed end of the bucket cylinder (5) is hinged to the front frame (1); the output end of the bucket cylinder (5) is hinged to the middle of the rocker arm (3); one end of the rocker arm (3) is hinged to the boom (2); the pull rod (4) is hinged between the other end of the rocker arm (3) and the auxiliary tool assembly (7); the boom cylinder (6) is used to drive the boom (2) to rise or fall, so that the auxiliary tool assembly (7) switches between a high position and a low position; The hinge point between the boom (2) and the front frame (1) is set to A, the hinge point between the boom (2) and the auxiliary tool assembly (7) is set to B, the hinge point between the auxiliary tool assembly (7) and the pull rod (4) is set to C, the hinge point between the pull rod (4) and the rocker arm (3) is set to D, the hinge point between the output end of the bucket cylinder (5) and the rocker arm (3) is set to E, the hinge point between the rocker arm (3) and the boom (2) is set to F, the hinge point between the fixed end of the bucket cylinder (5) and the front frame (1) is set to G, the hinge point between the fixed end of the boom cylinder (6) and the front frame (1) is set to S, the hinge point between the output end of the boom cylinder (6) and the boom (2) is set to Q, and when the auxiliary tool assembly (7) is in the low position, the distance from A to the ground is set to H, and the distance from B to the ground is set to I; When AB=7.45EF, AQ=4.18EF, AF=5.46EF, DE=1.05EF, DF=2.05EF, BQ=3.31EF, BF=2EF, CD=2.58EF, BC=1.39EF, H=5.09EF, and I=0.61EF, the bucket cylinder (5) maintains the extended set length GE unchanged, and when the auxiliary tool assembly (7) switches from the low position to the high position, the auxiliary tool assembly (7) can be turned up and maintained within a set angle range with the ground.
2. The forward-rotating six-link working device according to claim 1, characterized in that: When the auxiliary tool assembly (7) is in the low position, the bucket cylinder (5) extends to the set length GE=5.51EF, and the auxiliary tool assembly (7) is parallel to the ground. During the process of switching the auxiliary tool assembly (7) from the low position to the high position, the set angle range between the auxiliary tool assembly (7) and the ground is 0°-5°.
3. The forward-rotating six-link working device according to claim 1, characterized in that: The boom (2) comprises a crossbeam (22) and two spaced boom plates (21), wherein the crossbeam (22) is connected between the two boom plates (21), and the two boom plates (21) are hinged between the front frame (1) and the auxiliary tool assembly (7), and the crossbeam (22) is hinged to one end of the rocker arm (3).
4. The forward-rotating six-link working device according to claim 3, characterized in that: The crossbeam (22) is located on a side of the movable arm plate (21) close to the auxiliary tool assembly (7).
5. The forward-rotating six-link working device according to claim 3, characterized in that: The crossbeam (22) is provided with a limiting pad (23), and the rocker arm (3) is provided with a limiting plate (31). When the auxiliary tool assembly (7) is in the high position, the bucket cylinder (5) extends to allow the auxiliary tool assembly (7) to unload, and the limiting plate (31) can abut against the limiting pad (23).
6. The forward-rotating six-link working device according to claim 5, characterized in that: The limiting pad (23) comprises a main pad (231) welded to the crossbeam (22) and a plurality of auxiliary pads (232) of different thickness specifications; one or more of the plurality of auxiliary pads (232) are optionally arranged on the main pad (231); and the limiting plate (31) is capable of abutting against the auxiliary pad (232) arranged on the main pad (231).
7. The forward-rotating six-link working device according to claim 6, characterized in that: The crossbeam (22) includes a circular tube (221), the circular tube (221) is connected between two boom plates (21), the main pad (231) is provided with an arc-shaped notch (2311) matching the outer circumferential surface of the circular tube (221), and the main pad (231) is welded to the circular tube (221) by fitting with the outer circumferential surface of the circular tube (221) through the arc-shaped notch (2311).
8. The forward-rotating six-link working device according to claim 3, characterized in that: The boom (2) further comprises a rib plate (24) connected between the crossbeam (22) and the boom plate (21).
9. The forward-rotating six-link working device according to claim 1, characterized in that: The auxiliary tool assembly (7) comprises an auxiliary tool (71) and a quick-change frame (72), the hinge point between the quick-change frame (72) and the movable arm (2) is B, the hinge point between the quick-change frame (72) and the pull rod (4) is C, and the auxiliary tool (71) is detachably mounted on the quick-change frame (72).
10. A loader, characterized in that It comprises a forward-rotating six-link working device according to any one of claims 1 to 9 and a vehicle body, wherein the front frame (1) is arranged on the vehicle body.