Reverse six-connecting-rod working device and loading machine
By optimizing the articulation point distance design, the inverted six-link working device is solved, and the problem of high difficulty in laying the loader bucket is achieved without manual adjustment of the bucket cylinder is achieved, and the working efficiency of the loader is improved.
Patent Information
- Application Number
- CN202421912561.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-08
AI Technical Summary
When the loader is placed at a low level, the operator needs to manually adjust the bucket cylinder, which is difficult to operate and lead to low working efficiency.
A reverse six-link working device is designed. By optimizing the distance between the hinge points, the bucket and the ground can be maintained at a set angle by only operating the boom cylinder without adjusting the bucket oil cylinder.
It reduces the skill requirements of operators, improves the working efficiency of the loader, and simplifies the operation process.
Smart Images
Figure CN223088518U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of loaders, in particular to a working device with a reverse six-link mechanism and a loader. Background Technique
[0002] When the loader is working, the boom cylinder and the bucket cylinder are operated to achieve high-position unloading and low-position leveling of the bucket. When the bucket is in the low position, the operator needs to operate the bucket cylinder to adjust the angle of the bucket to achieve leveling. This operation method requires a high level of proficiency from the operator. For novice operators, it is inconvenient to operate, and each time the bucket cylinder is rotated to adjust the angle, the working efficiency is low. Content of the Utility Model
[0003] The purpose of the utility model is to provide a working device with a reverse six-link mechanism and a loader, which can effectively improve the working efficiency of the loader and reduce the labor intensity of the operator.
[0004] To achieve this purpose, the utility model adopts the following technical solutions:
[0005] The working device with a reverse six-link mechanism includes a front frame, a boom, a rocker arm, a tie rod, a boom cylinder, a bucket cylinder and a bucket;
[0006] Wherein, the boom is hinged between the front frame and the bucket, 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 one end of the rocker arm, the tie rod is hinged between the other end of the rocker arm and the bucket, the rocker arm is hinged to the boom, the boom cylinder is used to drive the boom to lift or lower, so that the bucket can be switched between the high position state and the low position state;
[0007] Set the hinge point between the boom and the front frame as A, the hinge point between the boom and the bucket as B, the hinge point between the bucket and the tie rod as C, the hinge point between the tie rod and the rocker arm as D, the hinge point between the rocker arm and the boom as E, the hinge point between the rocker arm and the output end of the bucket cylinder as F, the hinge point between the fixed end of the bucket cylinder and the front frame as G, the hinge point between the fixed end of the boom cylinder and the front frame as S, the hinge point between the output end of the boom cylinder and the boom as Q. When the bucket is in the low position state, the height difference between A and B in the vertical direction is H;
[0008] When AB = 4.37EF, AQ = 2.21EF, AE = 2.86EF, DE = 1.18EF, DF = 2.1EF, BQ = 2.18EF, BE = 1.71EF, CD = 1.07EF, BC = 0.577EF, and H = 2.86EF, the tipping cylinder can maintain the extended set length unchanged, so that when the bucket is in the high position state, the bucket can discharge materials, and when the bucket is in the low position state, a set angle can be maintained between the bucket and the ground.
[0009] As an alternative solution, the tipping cylinder extends the set length GF = 1.97EF, and the set angle between the bucket and the ground is 0°.
[0010] As an alternative solution, a limit cushion block is provided on the boom, and a limit plate is provided on the rocker arm. When the bucket is in the high position state and the tipping cylinder extends the set length GF = 1.97EF, the limit plate can abut against the limit cushion block.
[0011] As an alternative solution, a plurality of the limit cushion blocks are stacked in sequence on the boom, and the number of the limit cushion blocks is determined according to the set length extended by the tipping cylinder.
[0012] As an alternative solution, the boom includes two boom plates and a boom cross beam connected between the two boom plates, and the limit cushion block is provided on the boom cross beam.
[0013] As an alternative solution, a reinforcing plate is provided at a position on the boom cross beam opposite to the limit cushion block, and the reinforcing plate is used to prevent the boom cross beam from deforming when the limit plate abuts against the limit cushion block.
[0014] As an alternative solution, the boom cross beam includes a cross plate and a U-shaped bending plate. The U-shaped bending plate is fixedly provided on the cross plate. One end and the other end of the cross plate and the U-shaped bending plate on the same side are respectively fixedly connected to the two boom plates, and the reinforcing plate is fixedly provided on the inner side of the U-shaped bending plate at a position opposite to the limit cushion block.
[0015] As an alternative solution, grooves are provided on both side surfaces of the cross plate along its width direction, and the bottom of the groove and the groove wall of the groove are connected by an arc surface.
[0016] As an alternative solution, the limit cushion block is installed on the boom by screws.
[0017] A wheel loader, comprising a vehicle body and a working device of a reverse six-link mechanism described in any of the above solutions, and a front frame of the working device of the reverse six-link mechanism is provided on the vehicle body.
[0018] Advantages of the present utility model:
[0019] A working device of a reverse six-link provided by the present utility model optimizes the distances between each hinge point, ensuring that after the bucket is normally unloaded in the high position state, only by operating the boom cylinder, the bucket can maintain a set angle with the ground in the low position state without operating the bucket cylinder, reducing the requirements for operators and improving work efficiency. Description of the drawings
[0020] Figure 1 is a schematic structural diagram of the working device of the reverse six-link provided by the embodiment of the present utility model;
[0021] Figure 2 is a schematic structural diagram of the working device of the reverse six-link provided by the embodiment of the present utility model in the high position state and the low position state respectively;
[0022] Figure 3 is a schematic structural diagram of the boom involved in the embodiment of the present utility model;
[0023] Figure 4 is a schematic structural diagram of the rocker arm involved in the embodiment of the present utility model;
[0024] Figure 5 is a schematic structural diagram of the boom crossbeam involved in the embodiment of the present utility model Figure 1 ;
[0025] Figure 6 is a schematic structural diagram of the boom crossbeam involved in the embodiment of the present utility model Figure 2 .
[0026] In the figure:
[0027] 1. Front frame; 2. Boom; 21. Boom plate; 22. Boom crossbeam; 221. Horizontal plate; 2211. Bottom of the groove; 2212. Wall of the groove; 2213. Arc surface; 222. U-shaped bending plate; 223. Reinforcing plate; 23. Reinforcing rib; 24. Limit cushion block; 3. Rocker arm; 31. Limit plate; 4. Tie rod; 5. Boom cylinder; 6. Bucket cylinder; 7. Bucket. Detailed implementation manners
[0028] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar components or components with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.
[0029] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, a mechanical connection, or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium. It may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0030] In the description of the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first feature and the second feature, or may include the situation where the first feature and the second feature are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0031] The technical solution of the present utility model will be further described below in conjunction with the drawings and through specific embodiments.
[0032] As Figure 1 - Figure 2 shown, an embodiment of the present utility model provides a working device of a reverse six-link mechanism, which includes a front frame 1, a boom 2, a swing arm 3, a tie rod 4, a boom cylinder 5, a bucket cylinder 6, and a bucket 7. Among them, the boom 2 is hinged between the front frame 1 and the bucket 7. The fixed end of the boom cylinder 5 is hinged to the front frame 1, and the output end of the boom cylinder 5 is hinged to the boom 2. The fixed end of the bucket cylinder 6 is hinged to the front frame 1, and the output end of the bucket cylinder 6 is hinged to one end of the swing arm 3. The tie rod 4 is hinged between the other end of the swing arm 3 and the bucket 7. The swing arm 3 is hinged to the boom 2. The boom cylinder 5 is used to drive the boom 2 to lift or lower, so as to switch the bucket 7 between the high position state and the low position state.
[0033] Set the hinge point between the boom 2 and the front frame 1 as A, the hinge point between the boom 2 and the bucket 7 as B, the hinge point between the bucket 7 and the tie rod 4 as C, the hinge point between the tie rod 4 and the swing arm 3 as D, the hinge point between the swing arm 3 and the boom 2 as E, the hinge point between the swing arm 3 and the output end of the bucket cylinder 6 as F, the hinge point between the fixed end of the bucket cylinder 6 and the front frame 1 as G, the hinge point between the fixed end of the front frame 1 and the boom cylinder 5 as S, and the hinge point between the output end of the boom cylinder 5 and the boom 2 as Q. When the bucket 7 is in the low position state, the height difference between A and B in the vertical direction is H.
[0034] When the distances between the respective hinge points meet the following requirements, i.e., AB = 4.37EF, AQ = 2.21EF, AE = 2.86EF, DE = 1.18EF, DF = 2.1EF, BQ = 2.18EF, BE = 1.71EF, CD = 1.07EF, BC = 0.577EF, H = 2.86EF, when the boom cylinder 5 drives the boom 2 to drive the bucket 7 to switch between the high position state and the low position state, the tilt cylinder 6 can maintain the extended set length unchanged, so that when the bucket 7 is in the high position state, the bucket 7 can ensure discharging, and when the bucket 7 is in the low position state, without adjusting the tilt cylinder 6, the bucket 7 can maintain a set angle with the ground.
[0035] The working device of this inverted six-link mechanism optimizes the distances between the respective hinge points, ensuring that after the bucket 7 discharges normally in the high position state, only by operating the boom cylinder 5, the bucket 7 can maintain a set angle with the ground in the low position state without operating the tilt cylinder 6, reducing the requirements for the operator and improving work efficiency.
[0036] Specifically, in actual operation, generally it is required that when the bucket 7 is in the low position state, the bucket 7 is placed flat on the ground, that is, the set angle between the bucket 7 and the ground is 0°. To meet the above requirements, the set length GF of the extended tilt cylinder 6 is 1.97EF. The setting of this structural dimension enables the bucket 7 to be parallel to the ground when the bucket 7 is in the low position state.
[0037] Furthermore, to ensure that the set length GF of the extended tilt cylinder 6 is 1.97EF, as Figure 3 - Figure 4 shown, a limit pad 24 is provided on the boom 2, and a limit plate 31 is provided on the rocker arm 3. When the bucket 7 is in the high position state, after the tilt cylinder 6 extends to the set length, the limit plate 31 can abut against the limit pad 24. This structure enables the tilt cylinder 6 to abut against the limit pad 24 through the limit plate 31 when the bucket 7 is in the high position state to ensure that the set length of its extension is GF = 1.97EF, making the operation simpler.
[0038] In this embodiment, when the bucket 7 is in the high position state, the extended length SQ1 of the boom cylinder 5 is 2.91EF, and when the bucket 7 is in the low position state, the extended length SQ2 of the boom cylinder 5 is 1.74EF, and the telescopic range of the boom cylinder 5 is 1.72EF ≤ SQ ≤ 2.91EF. This structure makes the extended length of the boom cylinder 5 the largest when the bucket 7 is in the high position state. When the extended length SQ2 of the boom cylinder 5 is 1.74EF, the bucket 7 touches the ground. At this time, the bucket 7 is in the low position state, and the operation is simpler. Moreover, after the bucket 7 touches the ground, the boom cylinder 5 can continue to contract to ensure that the bucket 7 can dig the soil normally.
[0039] Optionally, in order to compensate for machining errors, a plurality of limiting pads 24 are sequentially stacked on the boom 2, and the number of the limiting pads 24 is determined according to the set length of the extension of the tilting cylinder 6. This structure adjusts the number of the limiting pads 24 according to actual requirements, and can ensure that the bucket 7 can be completely leveled on the ground in the low position state.
[0040] Specifically, the boom 2 includes two boom plates 21 and a boom cross beam 22 connected between the two boom plates 21, and the limiting pads 24 are arranged on the boom cross beam 22.
[0041] More specifically, as Figure 5 - Figure 6 shown, the boom cross beam 22 includes a cross plate 221 and a U-shaped bending plate 222. The U-shaped bending plate 222 is fixedly arranged on the cross plate 221. One end and the other end of the cross plate 221 and the U-shaped bending plate 222 on the same side are respectively fixedly connected to the two boom plates 21, and the limiting pads 24 are arranged on the U-shaped bending plate 222.
[0042] Further, when the limiting plate 31 abuts against the limiting pad 24, in order to ensure that the boom cross beam 22 does not deform, a reinforcing plate 223 is arranged at a position on the boom cross beam 22 opposite to the limiting pad 24, that is, the reinforcing plate 223 is fixedly arranged on the inner side of the U-shaped bending plate 222 at a position opposite to the limiting pad 24. The reinforcing plate 223 can effectively support the U-shaped bending plate 222 to prevent it from deforming.
[0043] Optionally, the limiting pads 24 are installed on the U-shaped bending plate 222 by screws, so that the installation of the limiting pads 24 is more convenient.
[0044] In order to reduce the stress concentration of the cross plate 221, grooves are arranged on both side surfaces of the cross plate 221 along its width direction. The groove bottom 2211 of the groove and the groove wall 2212 of the groove are connected by an arc surface 2213. By adding the arc surface 2213 on the cross plate 221, the stress concentration can be effectively reduced and the service life of the cross plate 221 can be improved.
[0045] Referring again to Figure 3 , the boom 2 further includes four reinforcing ribs 23. The four reinforcing ribs 23 are divided into two groups and are respectively arranged on both sides of the U-shaped bending plate 222 along its width direction. One end of the two reinforcing ribs 23 in each group is fixedly connected to the corresponding boom plate 21, and the other end is fixedly connected to the U-shaped bending plate 222.
[0046] In this embodiment, EF = 685 mm, AB = 2993.45 mm, AQ = 1513.85 mm, AE = 1959.1 mm, DE = 808.3 mm, DF = 1438.5 mm, BQ = 1493.3 mm, BE = 1171.35 mm, CD = 732.95 mm, BC = 395.245 mm, H = 1959.1 mm, GF = 1349.45 mm, SQ1 = 1993.35 mm, SQ2 = 1191.9 mm, 1178.2 mm ≤ SQ ≤ 1993.35 mm. Through the setting of the above dimension relationships, it is possible to completely level the bucket 7 on the ground in the low position and meet the dynamic and kinematic performance requirements.
[0047] An embodiment of the present utility model further provides a loader, including a vehicle body and the working device of the reverse six-link mechanism described above. The front frame is arranged on the vehicle body. This loader is simpler to operate and can effectively improve work efficiency.
[0048] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.
Claims
1. The working device of the reversing six-link mechanism is characterized in that, It includes a front frame (1), a boom (2), a swing arm (3), a tie rod (4), a boom cylinder (5), a bucket cylinder (6) and a bucket (7); Among them, the boom (2) is hinged between the front frame (1) and the bucket (7). The fixed end of the boom cylinder (5) is hinged to the front frame (1), the output end of the boom cylinder (5) is hinged to the boom (2), the fixed end of the bucket cylinder (6) is hinged to the front frame (1), the output end of the bucket cylinder (6) is hinged to one end of the swing arm (3), the tie rod (4) is hinged between the other end of the swing arm (3) and the bucket (7), the swing arm (3) is hinged to the boom (2), and the boom cylinder (5) is used to drive the boom (2) to lift or lower, so that the bucket (7) can be switched between a high position state and a low position state; Set the hinge point between the boom (2) and the front frame (1) as A, the hinge point between the boom (2) and the bucket (7) as B, the hinge point between the bucket (7) and the tie rod (4) as C, the hinge point between the tie rod (4) and the swing arm (3) as D, the hinge point between the swing arm (3) and the boom (2) as E, the hinge point between the swing arm (3) and the output end of the bucket cylinder (6) as F, the hinge point between the fixed end of the bucket cylinder (6) and the front frame (1) as G, the hinge point between the front frame (1) and the fixed end of the boom cylinder (5) as S, the hinge point between the output end of the boom cylinder (5) and the boom (2) as Q. When the bucket (7) is in the low position state, the height difference in the vertical direction between A and B is H; When AB = 4.37EF, AQ = 2.21EF, AE = 2.86EF, DE = 1.18EF, DF = 2.1EF, BQ = 2.18EF, BE = 1.71EF, CD = 1.07EF, BC = 0.577EF, H = 2.86EF, the bucket cylinder (6) can keep the extended set length unchanged, so that when the bucket (7) is in the high position state, the bucket (7) can discharge materials, and when the bucket (7) is in the low position state, the bucket (7) can keep a set angle with the ground.
2. The working device of the reverse six-link mechanism according to claim 1, characterized in that, The bucket cylinder (6) extends the set length GF = 1.97EF, and the set angle between the bucket (7) and the ground is 0°.
3. The working device of the reverse six-link mechanism according to claim 2, characterized in that, A limit cushion block (24) is arranged on the boom (2), and a limit plate (31) is arranged on the swing arm (3). When the bucket (7) is in the high position state and the bucket cylinder (6) extends the set length GF = 1.97EF, the limit plate (31) can abut against the limit cushion block (24).
4. The working device of the reverse six-link mechanism according to claim 3, characterized in that, A plurality of the limit cushion blocks (24) stacked in sequence are arranged on the boom (2), and the number of the limit cushion blocks (24) is determined according to the set length extended by the bucket cylinder (6).
5. The working device of the reverse six-link mechanism according to claim 3, characterized in that, The boom (2) includes two boom plates (21) and a boom cross beam (22) connected between the two boom plates (21), and the limit cushion block (24) is arranged on the boom cross beam (22).
6. The working device of the reverse six-link mechanism according to claim 5, wherein, A reinforcing plate (223) is arranged at a position on the boom cross beam (22) opposite to the limit cushion block (24), and the reinforcing plate (223) is used to prevent the boom cross beam (22) from deforming when the limit plate (31) abuts against the limit cushion block (24).
7. The working device of the reverse six-link mechanism according to claim 6, characterized in that, The boom cross beam (22) includes a horizontal plate (221) and a U-shaped bending plate (222), the U-shaped bending plate (222) is fixedly arranged on the horizontal plate (221), one end and the other end of the horizontal plate (221) and the U-shaped bending plate (222) on the same side are respectively fixedly connected to the two boom plates (21), and the reinforcing plate (223) is fixedly arranged on the inner side of the U-shaped bending plate (222) at a position opposite to the limit cushion block (24).
8. The working device of the reverse six-link mechanism according to claim 7, characterized in that, Both side surfaces of the horizontal plate (221) along its width direction are provided with grooves, and the groove bottom (2211) and the groove wall (2212) of the groove are connected by an arc surface (2213).
9. The working device of the reverse six-link according to claim 3, characterized in that The limit cushion block (24) is installed on the boom (2) by screws.
10. Loader, characterized in that, It includes a vehicle body and a working device of the reverse six-link mechanism according to any one of claims 1-9, and the front frame of the working device of the reverse six-link mechanism is arranged on the vehicle body.