CN218642335U - Landing leg assembly and operation machine - Google Patents

Abstract

The utility model relates to the technical field of engineering machinery, and provides a support leg assembly and an operation machine, wherein the support leg assembly comprises a cantilever, a support leg, an installation part and a locking part; the cantilever is arranged on one side of the vehicle body, and the support leg is positioned at one end of the cantilever, which is far away from the vehicle body; the mounting part is connected to one of the cantilever and the supporting leg and is hinged to the other of the cantilever and the supporting leg; the locking piece is connected to the mounting piece and comprises a locking state and a releasing state; in a locking state, the locking piece limits the cantilever to rotate relative to the supporting leg; in the released state, the angle of the leg relative to the cantilever is adjustable. Before the operation machinery works, the locking piece is loosened, the angle of the supporting leg relative to the cantilever is adjusted, the span between the bottom of the supporting leg and the vehicle body can be adjusted, and then the anti-overturning capacity of the supporting leg assembly is increased. And when the angle between the supporting leg and the cantilever is adjusted, the weight of the supporting leg assembly is not increased, and the use requirement can be met.

Description

Landing leg assembly and operation machine

Technical Field

The utility model relates to an engineering machine tool technical field especially relates to a landing leg subassembly and operation machinery.

Background

In the engineering field, the method is commonly used for operating machines such as cranes, concrete pump trucks and the like, and the cantilever system of the operating machine is utilized to increase the range of engineering operation and improve the convenience of the engineering operation. However, the boom system may generate bending moment during operation, which may result in poor stability of the work machine, and therefore, the outriggers may be required to increase the stability of the work machine. In the related art, the width and weight of the working machine are limited, and the requirements on the lifting height and the lifting quality are increasingly increased, however, the span of the original single-stage outrigger is insufficient, and the weight of the multi-stage outrigger is large, so that the use requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve at least one of the technical problems existing in the related art. Therefore, the utility model provides a landing leg assembly is connected through the installed part between landing leg and the cantilever, and the landing leg is adjustable for the angle of cantilever, and the retaining member is used for fixing the landing leg at specific angle. When the bottom of the supporting leg rotates towards the direction far away from the vehicle body, the span between the bottom of the supporting leg and the vehicle body is increased, and the use requirement can be met without increasing the structural weight of the supporting leg assembly.

The utility model also provides an operation machinery.

According to the utility model discloses the landing leg subassembly that the embodiment of first aspect provided, include:

a cantilever;

the supporting leg is positioned at one end of the cantilever far away from the vehicle body;

a mounting member connected to one of the cantilever and the leg and hinged to the other of the cantilever and the leg;

a retaining member coupled to the mounting member, the retaining member including a locked state and an unlocked state;

in the locked state, the retaining member limits rotation of the cantilever relative to the leg;

in the released state, the angle of the leg relative to the cantilever is adjustable.

According to the utility model discloses an embodiment, the installed part connect in the landing leg, the cantilever is close to the one end of landing leg is provided with a plurality of location portion locking state, the retaining member is connected in a plurality of one of location portion, and a plurality of location portion is corresponding to different turned angle.

According to the utility model discloses an embodiment, the cantilever is close to the one end of landing leg is equipped with two connecting portion side by side, the installed part is located two between the connecting portion and articulate in connecting portion.

According to an embodiment of the present invention, the positioning portion is a positioning hole formed on the connecting portion, and the mounting member is provided with a shaft sleeve, which is perpendicular to the support leg and the cantilever;

the retaining member includes:

the pin shaft penetrates through the shaft sleeve in a sliding manner;

the shifting piece is connected to the pin shaft and drives the pin shaft to switch between a first position and a second position;

in the first position, the pin is fully retracted within the sleeve;

and at the second position, one end of the pin shaft is positioned outside the shaft sleeve and penetrates through one of the positioning holes.

According to the utility model discloses an embodiment, be equipped with two in the axle sleeve the round pin axle, dial the piece and connect in two through drive assembly the round pin axle, dial the piece drive two the round pin axle symmetric movement.

According to the utility model discloses an embodiment, be provided with the spring in the axle sleeve, spring coupling in the round pin axle is kept away from the one end of connecting portion, the spring makes the round pin axle has the trend of stretching out the axle sleeve.

According to the utility model discloses an embodiment, the axle sleeve orientation one side of dialling the piece is formed with the spout, drive assembly includes:

the middle part of the first connecting rod is hinged to the mounting part, and the first connecting rod is connected to the poking part;

the two second connecting rods are hinged to two ends of the first connecting rod in a one-to-one correspondence manner;

and one end of each of the two third connecting rods is correspondingly hinged to the two second connecting rods one by one, and the other end of each of the two third connecting rods penetrates through the sliding groove and is correspondingly hinged to the two pin shafts one by one.

According to the utility model discloses an embodiment, the connecting portion orientation the terminal surface of landing leg is from last to keeping away from down the direction slope of landing leg.

According to the utility model discloses an embodiment, the cantilever includes a plurality of joints, and is a plurality of pull connection between the joint.

According to the utility model discloses an embodiment, the landing leg is provided with ground connection piece towards the one end on ground, ground connection piece with distance between the landing leg is adjustable.

According to an embodiment of the utility model, a telescopic component is arranged between one end of the supporting leg facing the ground and the grounding piece;

or, the landing leg is formed with and holds the chamber, ground connection spare orientation one side of landing leg is equipped with the base member, the base member pull connect in hold the chamber, just the landing leg with be equipped with the locating part between the base member.

According to the utility model discloses second aspect embodiment provides a work machine, work machine includes according to the utility model discloses the landing leg subassembly that first aspect embodiment provided.

The utility model provides an above-mentioned one or more technical scheme has one of following technological effect at least:

according to the utility model discloses the landing leg subassembly is provided according to the embodiment of first aspect of the utility model, including cantilever, landing leg, installed part and retaining member; the cantilever is suitable for being mounted to one side of the vehicle body, and the supporting leg is positioned at one end of the cantilever, which is far away from the vehicle body; the mounting piece is connected to one of the cantilever and the leg and is hinged to the other of the cantilever and the leg; the locking part is connected to the mounting part and comprises a locking state and a loosening state; in the locking state, the locking piece limits the cantilever to rotate relative to the supporting leg; in the released state, the angle of the leg relative to the cantilever is adjustable. Before the operation machinery works, the locking piece is loosened, the angle of the supporting leg relative to the cantilever is adjusted, the span between the bottom of the supporting leg and the vehicle body can be adjusted, and the anti-overturning capacity of the supporting leg assembly is further improved. And when the angle between the supporting leg and the cantilever is adjusted, the weight of the supporting leg assembly is not increased, and the use requirement can be met.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a leg assembly provided by an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a leg assembly provided by an embodiment of the present invention, in which the leg is in a vertical state;

fig. 3 is a schematic structural diagram of a leg assembly provided in an embodiment of the present invention in an inclined state;

FIG. 4 is an enlarged view of a portion of the lock and drive assembly of FIG. 2;

fig. 5 is a schematic view of a working machine according to an embodiment of the present invention.

Reference numerals:

10. a cantilever; 11. a connecting portion; 12. a positioning part;

20. a support leg; 21. a substrate; 22. a ground member; 23. a stopper;

30. a mounting member; 31. a shaft sleeve;

40. a locking member; 41. a pin shaft; 42. a toggle member; 43. a spring;

50. a transmission assembly; 51. a first link; 52. a second link; 53. and a third link.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description of the present specification, references to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the related art, the width and the weight of the working machine are limited, but the requirements of the lifting height and the lifting quality are increasingly improved, however, the span of the original single-stage outrigger is insufficient, and the weight of the multi-stage outrigger is large, so that the use requirements cannot be met.

Referring to fig. 1 to 4, the leg assembly according to the first aspect of the present invention includes a cantilever 10, a leg 20, a mounting member 30 and a locking member 40.

One end of the boom 10 is adapted to be mounted to the body of the work machine and the other end of the boom 10 is provided with a leg 20, which leg 20 has a distance to the body when the boom 10 is deployed, increasing the anti-overturning capability of the work machine.

In some cases, the cantilever 10 is hinged to a vehicle body of the working machine, when the working machine works, the cantilever 10 is swung to one side of the vehicle body, the supporting leg 20 is located at one end of the cantilever 10 far away from the vehicle body, and the supporting function of the working machine can be realized after the supporting leg 20 is grounded.

In other cases, the vehicle body is provided with a sleeve for accommodating the cantilever 10, the cantilever 10 is connected to the sleeve in a drawing manner, when the working machine works, the cantilever 10 is drawn out to one side of the vehicle body, and the supporting function of the working machine can be realized after the supporting legs 20 are grounded.

Mounting member 30 is attached to one of cantilever 10 and leg 20, and mounting member 30 is hingedly attached to the other of cantilever 10 and leg 20.

It will be appreciated that when mount 30 is fixedly attached to leg 20, cantilever 10 is hinged to mount 30; when the mounting member 30 is fixedly connected to the cantilever 10, the leg 20 is hinged to the mounting member 30. In this manner, the angle between the leg 20 and the arm 10 can be adjusted. The supporting leg 20 has a certain length, and when the angle of the supporting leg 20 relative to the cantilever 10 changes, the span between the bottom of the supporting leg 20 and the vehicle body is increased, so that the force arm length of the supporting leg assembly is increased, and the anti-overturning capacity of the working machine is further improved.

Retaining member 40 is coupled to mounting member 30, and retaining member 40 includes a locked condition and an unlocked condition. In the locked state, retaining member 40 may limit the angular change between leg 20 and cantilever 10; in the released state, retaining member 40 releases leg 20 from cantilever arm 10, allowing the angle of leg 20 to be changed relative to cantilever arm 10.

When the working machine is operated, the boom 10 is unfolded to one side of the vehicle body while the locker 40 is released, so that the leg 20 is in a tilted state in which the distance between the bottom of the leg 20 and the vehicle body is greater than the distance between the leg 20 and the vehicle body in a vertical state. Therefore, the embodiment of the present invention provides a leg assembly, which does not increase the weight of the leg assembly when adjusting the angle between the leg 20 and the cantilever 10, and can meet the use requirement.

It should be noted that the inclination angle of the outrigger 20 can be adjusted according to different use requirements, for example, when the load suspended by the working machine is large, the inclination angle of the outrigger 20 is large, and the span of the outrigger 20 is large.

In some embodiments, mounting member 30 is attached to leg 20, and cantilever 10 is provided with a plurality of locator portions 12 at an end adjacent to leg 20. In the locked state, the locker 40 is coupled to one of the plurality of fixing parts 12, and the plurality of fixing parts 12 correspond to different rotation angles.

It will be appreciated that the position of retaining member 40 relative to the end of cantilever 10 will change during rotation of leg 20 relative to cantilever 10. In this embodiment, the locking member 40 is connected to the positioning portion 12 to fix the leg 20 and the cantilever 10 together. The angle of leg 20 relative to cantilever 10 is different when retaining member 40 is attached to different locations 12. At the same time, the connection between the positioning part 12 and the locking part 40 is tighter, and the looseness under the external load can be avoided.

In some embodiments, the cantilever 10 is provided with two parallel connecting portions 11 at an end thereof adjacent to the leg 20, the mounting member 30 is located at a position between the two connecting portions 11, and the mounting member 30 is hinged to the two connecting portions 11.

It can be understood that, two connecting portions 11 can form a clamping effect on the mounting member 30, and when the mounting member 30 rotates relative to the two connecting portions 11, the force-bearing deviation cannot occur, so that the situations of lateral force unevenness and lateral instability under the action of external load are avoided.

In some embodiments, the positioning portion 12 is a positioning hole opened on the connecting portion 11, and the mounting member 30 is provided with a sleeve 31, and the sleeve 31 is disposed perpendicular to the leg 20 and the cantilever 10, please refer to fig. 4.

The locking member 40 includes a pin 41 and a toggle member 42, the pin 41 slidably penetrates through the shaft sleeve 31, two ends of the shaft sleeve 31 are through, and the pin 41 can retract into the shaft sleeve 31 or extend out of the shaft sleeve 31.

The toggle member 42 is connected to the pin 41, including a direct connection or an indirect connection, and the toggle member 42 drives the pin 41 to switch between the first position and the second position. In the first position, the pin 41 is fully retracted within the sleeve 31; in the second position, one end of the pin 41 is located outside the sleeve 31 and passes through one of the positioning holes.

It will be appreciated that prior to adjusting the angle of the leg 20 relative to the arm 10, the pin 41 is pulled back into the sleeve 31 by applying a force to the pull member 42, and the leg 20 is allowed to rotate relative to the arm 10. After the angle of the supporting leg 20 is adjusted, an acting force is applied to the toggle piece 42, so that the pin shaft 41 extends out of the shaft sleeve 31, and one end of the pin shaft 41 is located in the positioning hole, thereby limiting the further rotation of the supporting leg 20.

In some embodiments, two pins 41 are disposed in the shaft sleeve 31, and the toggle member 42 is connected to the two pins 41 through the transmission assembly 50, and the toggle member 42 can drive the two pins 41 to move symmetrically.

It can be understood that both sides of the mounting member 30 are provided with the connecting portions 11, the two connecting portions 11 are provided with positioning holes, the two pin shafts 41 can retract into the shaft sleeve 31 simultaneously, and can also penetrate through the positioning holes on both sides simultaneously, so that the stability of stress is improved.

In the above embodiment, the pin 41 can be retracted into the sleeve 31, or can be extended out of the sleeve 31 by the toggle member 42. In practical use, the spring 43 can be arranged in the shaft sleeve 31, the spring 43 is connected to one side of the pin shaft 41 far away from the connecting part 11, the spring 43 enables the pin shaft 41 to have a tendency of extending out of the shaft sleeve 31, one end of the pin shaft 41 automatically extends out of the shaft sleeve 31 under the action of the spring 43 without external force interference, and the pin shaft is arranged in the positioning hole in a penetrating mode, so that the safety of the landing leg assembly is improved.

When two pins 41 are provided in the sleeve 31, the spring 43 moves the two pins 41 in a direction away from each other and is inserted into the positioning holes on both sides.

In some embodiments, a sliding groove is formed on a side of the sleeve 31 facing the toggle member 42, the sliding groove is communicated with the inside and the outside of the sleeve 31, and the transmission assembly 50 is connected to the pin 41 in the sleeve 31 and the toggle member 42 on the outside.

The transmission assembly 50 includes a first link 51, a second link 52 and a third link 53, the middle portion of the first link 51 is hinged to the mounting member 30, and the first link 51 is connected to the toggle member 42. When a force is applied to the toggle member 42, the angle of the first link 51 can be adjusted.

The number of the second connecting rods 52 is two, and the two second connecting rods 52 are hinged to two ends of the first connecting rod 51 in a one-to-one correspondence manner. The number of the third connecting rods 53 is two, one end of each of the two third connecting rods 53 is hinged to the two second connecting rods 52 in a one-to-one correspondence manner, and the other end of each of the two third connecting rods 53 penetrates through the sliding groove and is hinged to the two pin shafts 41 in a one-to-one correspondence manner.

It will be understood that when the toggle member 42 rotates, the first link 51 rotates synchronously, so that the second link 52 and the third link 53 move synchronously, and the two pins 41 are driven to extend or retract the shaft sleeve 31 synchronously.

In some embodiments, the end surface of the connecting portion 11 facing the leg 20 is an inclined surface, and the end surface is inclined from top to bottom in a direction away from the leg 20.

It can be understood that the end face of the connecting portion 11 is inclined, which helps the connecting portion 11 to avoid the position of the leg 20 when rotating, so that the angle adjustment range between the leg 20 and the cantilever 10 is increased, and the flexibility of the leg assembly is improved.

In some cases, cantilever 10 includes multiple joints with a pull connection therebetween, which helps to increase the span of leg 20.

According to the utility model discloses landing leg assembly, the angle between adjustment landing leg 20 and the cantilever 10 can change landing leg assembly's span, has promoted operation machinery's antidumping ability. When the leg assembly is used, the length of the leg 20 in the inclined state can be further adjusted, on one hand, the leg 20 is favorable for being adaptive to terrains, on the other hand, the inclined length of the leg 20 is increased, and the span of the leg assembly is increased.

In some embodiments, the ground-facing end of the leg 20 is provided with a ground engaging member 22, and the distance between the ground engaging member 22 and the leg 20 is adjustable.

It will be appreciated that after adjusting the angle of inclination of the legs 20, the distance between the ground engaging members 22 and the legs 20 can be further adjusted to allow the ground engaging members 22 to contact the ground to accommodate different terrains. At the same time, the distance between the ground contact 22 and the vehicle body increases, further increasing the anti-overturning capability of the work machine.

In some embodiments, a telescopic assembly is disposed between one end of the supporting leg 20 facing the ground and the grounding member 22, and the telescopic assembly may be a telescopic cylinder, an electric sliding table, a lead screw shaft sleeve, or the like, and when the telescopic assembly is adjusted, the grounding member 22 may be far away from or close to the supporting leg 20, so as to change the span of the supporting leg assembly.

In other embodiments, the supporting leg 20 is formed with a containing cavity, and the end of the supporting leg 20 facing the ground is formed with an opening communicated with the containing cavity; a base 21 is disposed on a side of the grounding member 22 facing the leg 20, the base 21 is connected to the accommodating cavity in a drawing manner, and a limiting member 23 is disposed between the leg 20 and the base 21, please refer to fig. 5.

It will be appreciated that when it is desired to increase the length of the leg assembly 20, the stop 23 can be released to allow the base 21 to be pulled partially along the leg assembly 20, thereby grounding the ground engaging member 22, increasing the terrain adaptability of the leg assembly and also increasing the span of the leg assembly.

According to a second aspect of the present invention, referring to fig. 5, a working machine includes a leg assembly according to a first aspect of the present invention.

When the working machine is operated, the boom 10 is unfolded to one side of the vehicle body while the locker 40 is released, so that the leg 20 is in a tilted state in which the distance between the bottom of the leg 20 and the vehicle body is greater than the distance between the leg 20 and the vehicle body in a vertical state. Therefore, the embodiment of the present invention provides a leg assembly, which does not increase the weight of the leg assembly when adjusting the angle between the leg 20 and the cantilever 10, and can satisfy the use requirements.

In summary, according to the leg assembly and the work machine provided by the embodiment of the present invention, the leg assembly includes the cantilever 10, the leg 20, the mounting member 30, and the locking member 40; the cantilever 10 is adapted to be mounted to a side of a vehicle body, the leg 20 being located at an end of the cantilever 10 remote from the vehicle body; the mounting member 30 is connected to one of the cantilever 10 and the leg 20 and is hinged to the other of the cantilever 10 and the leg 20; retaining member 40 is attached to mounting member 30, retaining member 40 including a locked condition and an unlocked condition; in the locked state, retaining member 40 limits rotation of cantilever 10 relative to leg 20; in the released state, the angle of the leg 20 relative to the cantilever 10 is adjustable. Before the working machine works, the locking piece 40 is loosened, the angle of the supporting leg 20 relative to the cantilever 10 is adjusted, the span between the bottom of the supporting leg 20 and the vehicle body can be adjusted, and the anti-overturning capacity of the supporting leg assembly is further improved. Moreover, the angle between the leg 20 and the cantilever 10 can be adjusted without increasing the weight of the leg assembly, thereby meeting the use requirement.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A leg assembly, comprising:

a cantilever;

the supporting leg is positioned at one end of the cantilever far away from the vehicle body;

a mounting member connected to one of the cantilever and the leg and hinged to the other of the cantilever and the leg;

a retaining member coupled to the mounting member, the retaining member including a locked state and an unlocked state;

in the locked state, the retaining member limits rotation of the cantilever relative to the leg;

in the released state, the angle of the leg relative to the cantilever is adjustable.

2. The leg assembly of claim 1, wherein the mounting member is coupled to the leg, the cantilever arm is provided with a plurality of positioning portions at an end thereof adjacent to the leg, and the locking member is coupled to one of the plurality of positioning portions corresponding to different rotational angles in the locked state.

3. The leg assembly of claim 2 wherein the cantilever is provided with two juxtaposed connecting portions at an end thereof adjacent the leg, the mounting member being located between and hingedly connected to the two connecting portions.

4. The leg assembly as claimed in claim 3, wherein the positioning portion is a positioning hole opened on the connecting portion, and the mounting member is provided with a bushing disposed perpendicular to the leg and the cantilever;

the retaining member includes:

the pin shaft is slidably arranged through the shaft sleeve;

the poking piece is connected to the pin shaft and drives the pin shaft to switch between a first position and a second position;

in the first position, the pin is fully retracted within the sleeve;

and at the second position, one end of the pin shaft is positioned outside the shaft sleeve and penetrates through one of the positioning holes.

5. The leg assembly as claimed in claim 4, wherein two of the pins are disposed in the shaft sleeve, and the toggle member is connected to the two pins through a transmission assembly, and drives the two pins to move symmetrically.

6. A leg assembly as claimed in claim 4 or 5, wherein a spring is provided within the sleeve, the spring being connected to an end of the pin remote from the connection portion, the spring tending to extend the pin out of the sleeve.

7. The leg assembly of claim 5, wherein the bushing is formed with a sliding slot on a side thereof facing the toggle member, and the transmission assembly comprises:

the middle part of the first connecting rod is hinged to the mounting part, and the first connecting rod is connected to the poking part;

the two second connecting rods are correspondingly hinged at two ends of the first connecting rod one by one;

and one end of each of the two third connecting rods is hinged to the two second connecting rods in a one-to-one correspondence manner, and the other end of each of the two third connecting rods is arranged in the sliding groove in a penetrating manner and is hinged to the two pin shafts in a one-to-one correspondence manner.

8. The leg assembly of claim 3, wherein the connecting portion slopes away from the leg from top to bottom toward the end face of the leg.

9. The leg assembly of any one of claims 1 to 5 wherein the cantilever comprises a plurality of knuckles, the knuckles being in a drawn connection therebetween.

10. A leg assembly as claimed in any one of claims 1 to 5, wherein the end of the leg facing the ground is provided with a ground engaging member, the distance between the ground engaging member and the leg being adjustable.

11. The leg assembly of claim 10, wherein a telescoping assembly is disposed between the ground-facing end of the leg and the ground engaging member;

or, the landing leg is formed with and holds the chamber, ground connection spare orientation one side of landing leg is equipped with the base member, the base member pull connect in hold the chamber, just the landing leg with be equipped with the locating part between the base member.

12. A work machine, characterized in that the work machine comprises a leg assembly according to any one of claims 1-11.

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