CN111411652A - Supporting mechanism and backhoe loader - Google Patents
Supporting mechanism and backhoe loader Download PDFInfo
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- CN111411652A CN111411652A CN202010404832.5A CN202010404832A CN111411652A CN 111411652 A CN111411652 A CN 111411652A CN 202010404832 A CN202010404832 A CN 202010404832A CN 111411652 A CN111411652 A CN 111411652A
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- connecting rod
- vehicle body
- supporting
- ground
- supporting legs
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- 230000007246 mechanism Effects 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 14
- 238000005299 abrasion Methods 0.000 abstract description 7
- 230000004888 barrier function Effects 0.000 description 6
- 230000001174 ascending effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
- E02F3/32—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom working downwardly and towards the machine, e.g. with backhoes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
Abstract
The invention discloses a supporting mechanism and a loader-digger, and relates to the technical field of excavating machinery. The supporting mechanism comprises supporting legs, a driving piece, an upper connecting rod and a lower connecting rod; the end parts of the same sides of the upper connecting rod and the lower connecting rod are respectively hinged with a vehicle body of the loader-digger, the end parts of the other sides of the upper connecting rod and the lower connecting rod are respectively hinged with supporting legs, the supporting legs are vertical to the ground, the vehicle body, the upper connecting rod, the lower connecting rod and the supporting legs form a parallelogram structure, and the driving piece is arranged on the vehicle body and used for providing driving force vertical to the ground direction for the supporting legs. According to the support mechanism and the backhoe loader provided by the invention, the vehicle body, the upper connecting rod, the lower connecting rod and the supporting legs form a parallelogram structure, so that the supporting legs are always vertical to the ground in the lifting process, the larger contact area between the bottoms of the supporting legs and the ground is ensured, the abrasion of the bottoms of the supporting legs is reduced, and the stability and the reliability in the digging operation are improved to a certain extent.
Description
Technical Field
The invention relates to the technical field of excavating machinery, in particular to a supporting mechanism and an excavating loader.
Background
At present, when the backhoe end of the backhoe loader is used for excavating, the vehicle body 30 needs to be supported by the support legs 10, so that tires leave the support surface 40, and the tires and an axle are prevented from being influenced in the excavating process. For better excavation stability, the support legs 10 are supported in a splayed manner in the diagonal direction, as shown in fig. 1.
In the prior art, referring to fig. 2, the loader-digger body 30, the support legs 10 and the telescopic parts 20 form a triangular structure together, the support legs 10 rotate around the body 30 by controlling the telescopic parts 20 to stretch, so that the angle between the loader-digger body 30 and the support legs 10 is changed, and the support height of the loader-digger is further changed. However, the triangular configuration allows the direction of movement of the support leg 10 to be constantly changed and always at an angle to the support surface 40. When the support leg 10 abuts the support surface 40, the bottom of the support leg 10 is in point contact or line contact with the support surface 40. The small contact surface between the supporting surface and the supporting surface can cause the supporting surface 40 to have larger impact on the bottom of the supporting leg 10, so that the bottom of the supporting leg 10 is worn unevenly, and the service life of the supporting leg 10 is shortened.
Disclosure of Invention
The invention aims to provide a supporting mechanism and an excavating loader, and aims to solve the problems that in the supporting mechanism in the prior art, when a supporting leg descends to form contact support with the ground, the plane contact between the bottom of the supporting leg and the ground is difficult to ensure, so that the bottom of the supporting leg is easy to wear unevenly, and the service life is shortened.
The embodiment of the invention is realized by the following steps:
the invention provides a supporting mechanism which comprises supporting legs, a driving piece, an upper connecting rod and a lower connecting rod, wherein the supporting legs are arranged on the supporting legs; the end parts of the same sides of the upper connecting rod and the lower connecting rod are respectively hinged with a vehicle body of the loader-digger, the end parts of the other sides of the upper connecting rod and the lower connecting rod are respectively hinged with supporting legs, the supporting legs are vertical to the ground, the vehicle body, the upper connecting rod, the lower connecting rod and the supporting legs form a parallelogram structure, and the driving piece is arranged on the vehicle body and used for providing driving force vertical to the ground direction for the supporting legs.
In an optional embodiment of the invention, pin holes are respectively formed in the end parts of the upper connecting rod and the lower connecting rod, two ends of the upper connecting rod respectively penetrate through the pin holes to be hinged with the vehicle body and the supporting legs through pin shafts, and two ends of the lower connecting rod respectively penetrate through the pin holes to be hinged with the vehicle body and the supporting legs through the pin shafts.
In an alternative embodiment of the present invention, the support mechanism further includes a guide assembly fixedly disposed on the vehicle body, an extending direction of the guide assembly is parallel to a connection line of a hinge point of the upper link and the lower link on the vehicle body, and the guide assembly is configured to guide a movement track of the parallelogram structure.
In an alternative embodiment of the present invention, the guide assembly includes a first baffle and a second baffle fixedly connected to the vehicle body, respectively, the first baffle and the second baffle are parallel to each other, and the hinged ends of the upper link and the lower link and the vehicle body are located between the first baffle and the second baffle.
In an alternative embodiment of the invention, the fixed end of the driving member is connected with the vehicle body, and the driving end of the driving member is connected with the upper connecting rod or the lower connecting rod.
In an alternative embodiment of the invention, the leg comprises a leg stem and a support block disposed at the bottom of the leg stem, the support block having a bottom surface for abutting the ground.
In an alternative embodiment of the invention, the support block is rotatably connected to the leg bar by a pin.
In an alternative embodiment of the invention, the bottom surface of the supporting block is a plane, and a cushion pad is arranged on the bottom surface of the supporting block.
In an optional embodiment of the invention, the driving part is an oil cylinder, a cylinder barrel of the oil cylinder is connected with the vehicle body, and a telescopic rod of the oil cylinder is connected with the upper connecting rod or the lower connecting rod.
The invention also provides a backhoe loader which comprises the support mechanism.
The embodiment of the invention has the beneficial effects that:
the invention discloses a supporting mechanism and a loader-digger, wherein the supporting mechanism comprises supporting legs, a driving piece, an upper connecting rod and a lower connecting rod; the supporting mechanism is connected to the body of the loader-digger, and the body, the upper connecting rod, the lower connecting rod and the supporting legs form a parallelogram structure together, so that compared with a triangular structure in the prior art, the same supporting height of the loader-digger can be realized only by a smaller driving force and a shorter driving stroke; in addition, the support leg is arranged to be vertical to the ground by utilizing the characteristic that one side of the parallelogram structure is fixed and the motion direction of the opposite side parallel to the parallelogram structure is unchanged. When the bottom of the supporting leg is in contact with the ground, the bottom of the supporting leg is directly attached to the ground, so that the larger contact area between the bottom of the supporting leg and the ground is ensured, the rapid abrasion of the bottom of the supporting leg is avoided, the stability of the whole excavator loader when the excavator loader is separated from the ground by using the supporting structure can be improved to a great extent, and the stability and the reliability during excavating operation are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of the operation of a support leg in the prior art;
FIG. 2 is a schematic structural view of a support leg of the prior art;
FIG. 3 is a schematic view of the operation of the support mechanism of the present invention;
FIG. 4 is a schematic structural diagram of a support mechanism supported on a horizontal ground according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a support mechanism according to an embodiment of the present invention;
FIG. 6 is a second schematic structural view of the supporting mechanism of the present invention supported on a horizontal ground;
fig. 7 is a view of the support mechanism of fig. 6 in a direction a supported on a horizontal ground.
Icon: 10-supporting legs; 20-a telescoping member; 30-a vehicle body; 40-a support surface; 100-a support mechanism; 110-a leg; 111-a leg bar; 112-a support block; 120-a drive member; 130-an upper link; 140-a lower link; 150-a guide assembly; 151-first baffle; 152-a second baffle; 200-a backhoe loader; 210-a vehicle body; 300-ground.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, in the prior art, one end of a support leg 10 for supporting a body 30 of an excavating and loading machine away from a supporting surface 40 is directly hinged with the body 30, the other end of the support leg is hinged with a telescopic end of a telescopic part 20, the body 30, the support leg 10 and the telescopic part 20 form a triangular structure together, and the support leg 10 rotates around the body 30 under the driving of the telescopic part 20 and gradually descends to be in contact with the ground. Because the supporting leg 10 descends in a mode of rotating around the vehicle body 30, when the supporting leg 10 descends to form contact support with the ground, an included angle exists between the bottom of the supporting leg 10 and the ground, and the impact of the ground on the supporting leg 10 causes the swinging and the rapid abrasion of the supporting leg 10.
Referring to fig. 3, the present embodiment provides a supporting mechanism 100 for supporting an excavating loader 200, wherein the supporting leg 110 of the supporting mechanism 100 has a constant moving direction and is always perpendicular to the ground 300 during the lifting process, so that the bottom of the supporting mechanism is in planar contact with the ground 300, thereby effectively reducing the impact of the ground 300 on the bottom of the supporting leg 110, delaying the wear of the bottom of the supporting leg 110, prolonging the service life of the supporting leg 110, and enhancing the stability of the support.
Referring to fig. 4, if the ground 300 is a plane, the supporting mechanism 100 includes a leg 110, a driving member 120, an upper link 130 and a lower link 140; the ends of the same sides of the upper and lower links 130 and 140 are respectively hinged with the body 210 of the loader-digger 200, the ends of the other sides of the upper and lower links 130 and 140 are respectively hinged with the support legs 110, and the body 210, the upper and lower links 130 and 140 and the support legs 110 form a parallelogram structure. The support leg 110 is arranged to be perpendicular to the ground 300 in the initial position, the driving member 120 is arranged on the vehicle body, the upper connecting rod 130 and the lower connecting rod 140 are driven by the driving member 120 to synchronously rotate around the vehicle body 210, so that the support leg 110 always descends along the direction perpendicular to the ground, and when the support leg 110 is in contact with the ground 300, the bottom of the support leg is parallel to the ground 300, and plane contact is formed between the support leg 110 and the ground 300.
Referring to fig. 5, if the ground 300 is a slope, the structure of the support mechanism 100 is unchanged, and at this time, the body 210 and the support mechanism 100 of the backhoe loader 200 are slightly inclined by the influence of the ground 300, but as long as the legs 110 of the support mechanism 100 are still set to be perpendicular to the ground 300 in the initial position, the legs 110 are still in plane contact with the ground 300 after being lowered.
Therefore, no matter whether the ground 300 is a plane or a slope, the supporting mechanism 100 provided by the embodiment can ensure that the supporting leg 110 is in plane contact with the ground 300, so that the abrasion of the bottom of the supporting leg 110 can be effectively reduced in the working process, and the service life of the supporting mechanism and the stability of the supporting process are improved. In addition, the use of the parallelogram structure requires only a small driving force and a short driving stroke to achieve the same support height for the backhoe loader 200.
In this embodiment, optionally, in order to realize connection among the vehicle body 210, the upper connecting rod 130, the lower connecting rod 140 and the leg 110, pin holes are respectively formed at end portions of the upper connecting rod 130 and the lower connecting rod 140, two ends of the upper connecting rod respectively penetrate through the pin holes to be hinged with the vehicle body 210 and the leg 110, and two ends of the lower connecting rod 140 respectively penetrate through the pin holes to be hinged with the vehicle body 210 and the leg 110.
It should be noted that two pin holes are further formed in the vehicle body 210, and the two pin holes in the vehicle body 210 are respectively hinged to one end of the upper connecting rod 130 and one end of the lower connecting rod 140; similarly, two pin holes are also formed in the leg 110, and the two pin holes in the leg 110 are respectively hinged to the other ends of the upper connecting rod 130 and the lower connecting rod 140; since the body 210, the upper link 130, the lower link 140 and the leg 110 form a parallelogram structure, the distance between two pin holes of the body 210 is equal to the distance between two pin holes of the leg 110.
The backhoe loader 200 is heavy equipment, and the joint of the support mechanism 100 and the backhoe loader is subjected to a large force during the process of supporting the support mechanism to ascend. The pin shaft is used as a standardized fastener, so that the support mechanism 100 can be hinged with the body 210 of the loader-digger 200, a large axial force can be borne, and the service life of the support mechanism 100 can be effectively prolonged by using the pin shaft for connection. Meanwhile, the pin shaft is usually locked by a cotter pin, so that the operation is reliable and the disassembly is convenient.
In this embodiment, optionally, since the deadweight and the load bearing of the loader-digger 200 are both relatively large, the loader-digger is easily affected by the external environment during the lifting process or the digging operation, and the body 210 is inevitably swayed or twisted. Referring to fig. 6 and 7, in order to reduce the influence of the above phenomenon on the supporting mechanism 100, the supporting mechanism 100 further includes a guide assembly 150 fixedly disposed on the vehicle body 210, an extending direction of the guide assembly 150 is parallel to a connection line of a hinge point of the upper link 130 and the lower link 140 on the vehicle body 210, and the guide assembly 150 is used for guiding a motion track of the parallelogram structure. The guide assembly 150 includes a first barrier 151 and a second barrier 152 fixedly coupled to the vehicle body, respectively, the first barrier 151 and the second barrier 152 are parallel to each other, and the hinged ends of the upper link 130 and the lower link 140 and the vehicle body 210 are located between the first barrier 151 and the second barrier 152.
After the first baffle 151 and the second baffle 152 are added, in the process of ascending or descending the supporting leg 110, even if the phenomenon of swinging or twisting occurs, the first baffle 151 and the second baffle 152 can limit the upper connecting rod 130 and the lower connecting rod 140 at two sides, so that the upper connecting rod 130 and the lower connecting rod 140 can only move along the ascending and descending direction and cannot swing or twist along other directions, and the relative position precision between the parts is ensured. Similarly, after the landing legs 110 are landed, in the process of supporting the backhoe loader 200 to ascend or descend, the first baffle 151 and the second baffle 152 always limit the upper connecting rod 130 and the lower connecting rod 140 on two sides, so that the accuracy and stability of the movement of the body 210 and the supporting mechanism 100 of the backhoe loader 200 in the whole supporting process are ensured.
In this embodiment, optionally, the fixed end of the driver 120 is connected to the vehicle body 210, and the driving end of the driver 120 is connected to the upper link 130 or the lower link 140.
When it is required to support the backhoe loader 200 off the ground 300, the telescopic end of the driving member 120 is extended outward, the upper link 130 or the lower link 140 is driven to rotate downward around the body 210, the leg 110 at the other end is gradually moved downward, and after contacting the ground 300, an upward supporting force is provided to the body 210, so that the body 210 is gradually moved upward off the ground 300 to reach a predetermined height. When the backhoe loader 200 needs to be supported and then returns to the ground 300, the telescopic end of the driving member 120 retracts inwards, the upper connecting rod 130 or the lower connecting rod 140 is driven to rotate upwards relative to the vehicle body 210, the position of the supporting leg 110 is unchanged and the supporting leg still contacts with the ground 300, the vehicle body 210 gradually descends until the supporting leg contacts with the ground 300, then the driving member 120 continues to shorten, the supporting leg 110 gradually moves upwards, the supporting mechanism 100 is retracted, and the whole supporting process is finished.
It should be noted that the driving end of the driving member 120 may also be directly connected to the leg 110, as long as the driving force perpendicular to the ground direction can be provided to the leg 110.
At this time, when it is required to support the backhoe loader 200 off the ground 300, the telescopic end of the driving member 120 is extended outward to directly drive the outrigger 110 to move downward, and after contacting the ground 300, an upward supporting force is provided to the vehicle body 210, so that the vehicle body 210 gradually moves upward off the ground 300 to reach a predetermined height. When the backhoe loader 200 needs to be supported and then returns to the ground 300, the telescopic end of the driving member 120 retracts inwards, so that the relative height between the bottom surface of the outrigger 110 and the bottom surface of the backhoe loader 200 is reduced, the vehicle body 210 gradually descends until the ground 300 is contacted, then, the driving member 120 continues to shorten, the outrigger 110 is pulled to move upwards, the supporting mechanism 100 is retracted, and the whole supporting process is finished.
The work condition of the backhoe loader 200 is complicated, and the ground 300 at the work site may be a plane surface, may be a slope surface having a certain inclination, or may be a partially uneven surface. By a partially uneven surface is meant a place where a certain portion of the ground 300 has a convexity or concavity. If the partially uneven surface is just the contact portion of the ground 300 and the support mechanism 100, even if the leg 110 is lowered in the direction perpendicular to the ground 300, it is difficult to ensure planar contact between the leg 110 and the ground 300 at the moment when the leg 110 is in contact with the ground 300, that is, there is still a case where the edge of the bottom surface of the leg 110 is in point contact or line contact with the ground 300. Therefore, in this embodiment, referring to fig. 6 and 7, the leg 110 includes a leg rod 111 and a supporting block 112 disposed at the bottom of the leg rod 111, and the bottom surface of the supporting block 112 is used for abutting against the ground when contacting with the ground 300. Because the supporting block 112 and the supporting leg rod 111 are rotatably connected in a pin shaft rotating manner, even if the contact part between the ground 300 and the supporting block 112 has a local uneven phenomenon, the supporting block 112 can passively rotate to adapt to the attached ground 300 at the moment of contacting with the ground 300 in the process of descending and contacting with the ground 300, and the process can also play a role in contact buffering to a certain degree, so that the impact of the ground 300 on the supporting block 112 is reduced, the abrasion of the supporting block 112 is reduced, and the stability of the supporting mechanism 100 is improved.
In this embodiment, optionally, the bottom surface of the supporting block 112 is a plane, and a cushion pad is disposed on the bottom surface of the supporting block 112.
The bottom surface of the supporting block 112 is set to be a plane, so that the attaching area between the supporting block 112 and the ground 300 can be increased, the abrasion of the supporting block 112 can be reduced, the service life of the supporting mechanism 100 can be prolonged, and the supporting mechanism 100 can be more stable. The bottom surface of the supporting block 112 is provided with a cushion pad, which can play a role of buffering when the ground 300 is not flat enough or when the supporting mechanism 100 is affected by external influence to generate vibration, thereby further reducing the abrasion of the supporting block 112 and improving the stability of the supporting mechanism 100.
In this embodiment, the driving member 120 is optionally an oil cylinder, a cylinder of the oil cylinder is connected to the vehicle body 210, and a telescopic rod of the oil cylinder is connected to the upper link 130 or the lower link 140.
The backhoe loader 200 belongs to heavy machinery, the supporting mechanism 100 needs a large driving force to support the backhoe loader 200 to ascend and descend, the oil cylinder is selected to support the backhoe loader 200 for a long time, and the backhoe loader 200 can be supported when oil pressure is removed, so that the backhoe loader 200 is safe and reliable.
It should be noted that the driving member 120 may also be a hydraulic cylinder, an air cylinder, an electric push rod, etc., and its fixed end is fixed on the vehicle body 210, and its driving end is used to provide a driving force to the supporting leg 110 in a direction perpendicular to the ground 300.
The support mechanism 100 works on the principle that the support mechanism 100 is used for supporting the loader-digger 200, the upper link 130, the lower link 140 and the support leg 110 of the support mechanism 100 and the vehicle body 210 form a parallelogram structure, two opposite sides of the parallelogram structure are always kept parallel, when one side is fixed, the motion direction of the other side parallel to the side is always kept unchanged, the support leg is arranged to be vertical to the ground, and when the vehicle body is fixed and the support leg is released downwards, the support leg is always kept vertical to the ground.
The present embodiment also provides a backhoe loader 200 including the support mechanism 100 as described in any one of the above. The support mechanism 100 is mounted on the body 210 of the backhoe loader 200 for supporting the backhoe loader 200 off the ground during backhoe end digging operations of the backhoe loader. The supporting mechanism 100 is of a parallelogram structure, the supporting leg 110 is always perpendicular to the ground under the driving of the driving element 120, and the bottom of the supporting leg 110 is directly attached to the ground 300 after descending, so that the bottom of the supporting leg 110 is prevented from being worn too fast, and the loader-digger 200 has high stability and reliability during digging operation. In addition, the support mechanism 100 has a parallelogram structure, and the backhoe loader 200 of the present embodiment requires a smaller driving force and a shorter driving stroke to achieve the same support height than a triangular structure.
In the foregoing explanation of the support mechanism 100, the operation manner, the operation principle, and the like of the support mechanism 100 provided on the backhoe loader 200 have been described in detail, and will not be described again.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A supporting mechanism is used for supporting a loader-digger and is characterized by comprising supporting legs, a driving piece, an upper connecting rod and a lower connecting rod;
the end parts of the same sides of the upper connecting rod and the lower connecting rod are respectively hinged with a vehicle body of the loader-digger, the end parts of the other sides of the upper connecting rod and the lower connecting rod are respectively hinged with the supporting legs, the supporting legs are perpendicular to the ground, the vehicle body, the upper connecting rod, the lower connecting rod and the supporting legs form a parallelogram structure, and the driving piece is arranged on the vehicle body and used for providing driving force perpendicular to the ground direction for the supporting legs.
2. The supporting mechanism as claimed in claim 1, wherein the ends of the upper connecting rod and the lower connecting rod are respectively provided with a pin hole, two ends of the upper connecting rod respectively penetrate through the pin holes to be hinged with the vehicle body and the supporting legs, and two ends of the lower connecting rod respectively penetrate through the pin holes to be hinged with the vehicle body and the supporting legs.
3. The support mechanism of claim 1, further comprising a guide assembly fixedly disposed on the vehicle body, wherein the guide assembly extends in a direction parallel to a connecting line of the upper link and the lower link at the hinge point of the vehicle body, and the guide assembly is configured to guide a movement track of the parallelogram structure.
4. The support mechanism as claimed in claim 3, wherein the guide assembly comprises a first baffle and a second baffle fixedly connected to the vehicle body, the first baffle and the second baffle are parallel to each other, and the hinged ends of the upper link and the lower link and the vehicle body are located between the first baffle and the second baffle.
5. The support mechanism of claim 1, wherein the fixed end of the driving member is connected to the vehicle body, and the driving end of the driving member is connected to the upper link or the lower link.
6. The support mechanism as claimed in claim 1, wherein the leg comprises a leg stem and a support block provided at a bottom of the leg stem, the support block having a bottom surface for abutting against the ground surface.
7. The support mechanism as claimed in claim 6, wherein the support block is pivotally connected to the leg bar by a pin.
8. The support mechanism as claimed in claim 7, wherein the bottom surface of the support block is planar and a cushion is provided on the bottom surface of the support block.
9. The support mechanism as claimed in claim 1, wherein the driving member is an oil cylinder, a cylinder barrel of the oil cylinder is connected to the vehicle body, and a telescopic rod of the oil cylinder is connected to the upper link or the lower link.
10. A backhoe loader comprising the support mechanism of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010404832.5A CN111411652A (en) | 2020-05-13 | 2020-05-13 | Supporting mechanism and backhoe loader |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010404832.5A CN111411652A (en) | 2020-05-13 | 2020-05-13 | Supporting mechanism and backhoe loader |
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| CN111411652A true CN111411652A (en) | 2020-07-14 |
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| CN202010404832.5A Pending CN111411652A (en) | 2020-05-13 | 2020-05-13 | Supporting mechanism and backhoe loader |
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| CN212129271U (en) * | 2020-05-13 | 2020-12-11 | 三一重机有限公司 | Supporting mechanism and backhoe loader |
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