CN113501449A - Work machine and work machine leg assembly - Google Patents
Work machine and work machine leg assembly Download PDFInfo
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- CN113501449A CN113501449A CN202110872138.0A CN202110872138A CN113501449A CN 113501449 A CN113501449 A CN 113501449A CN 202110872138 A CN202110872138 A CN 202110872138A CN 113501449 A CN113501449 A CN 113501449A
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- leg
- movable
- movable supporting
- plate
- support plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention provides a working machine and a working machine support leg assembly. The movable leg is movably arranged in the leg box and can be switched between an unfolding state and a recycling state. The linkage assembly is arranged between the movable supporting leg and the movable supporting plate and can support the movable supporting leg; wherein, under the state that the movable supporting leg switches between the expansion state and the recovery state, the linkage subassembly can drive the removal backup pad and remove along with the movable supporting leg. Like this, the activity landing leg is expanding, retrieve the in-process, removes the backup pad and can be along with activity landing leg synchronous motion, removes the backup pad from this and has a supporting role to the activity landing leg to can prevent that the activity landing leg from flagging or deformation, also solved the problem of flagging, deformation that the activity landing leg appears because of expanding completely, and then promoted the motion flexibility of activity landing leg.
Description
Technical Field
The invention relates to the technical field of hoisting equipment, in particular to a working machine and a supporting leg assembly of the working machine.
Background
The hoisting equipment is widely applied to various construction, loading and unloading occasions. The crane and other large movable hoisting equipment have the advantages of good maneuverability and rapid transfer, the hoisting equipment is provided with a plurality of supporting legs, and the supporting legs are used for providing supporting force for the hoisting equipment when the hoisting equipment performs hoisting operation and are indispensable constituent structures in the hoisting equipment.
In the related art, the span design of the support legs is often very large to meet the stability of the support legs during operation, and when the movable support legs are completely extended out, two vertical support legs along the width direction of the hoisting equipment are always in contact with the ground. Further, for easy assembly and disassembly, the movable leg must have sufficient clearance from the leg box in the vertical direction.
When the hoisting equipment prepares the operation, must stretch the activity landing leg completely, vertical landing leg this moment is temporarily not with ground contact, under the action of activity landing leg dead weight, the activity landing leg has the trend of pushing down with landing leg case lapped position, and its focus is located the landing leg case outside all the time, surpasss the oral area cushion. And the movable support leg always droops at the moment, and when the drooping amount is too large, the movable support leg is difficult to retract, and the normal work of the crane is influenced.
Disclosure of Invention
The invention provides a working machine and a working machine supporting leg assembly, which are used for solving the defect that a movable supporting leg is easy to sag in the prior art, realizing flexible unfolding and recovery of the movable supporting leg, and being difficult to sag and deform.
The invention provides a leg assembly for a working machine, comprising: the landing leg case, activity landing leg and removal backup pad. The movable supporting leg is movably arranged in the supporting leg box and can be switched between an unfolding state and a recovery state, the movable supporting plate can move relative to the supporting leg box, and the linkage assembly is arranged between the movable supporting leg and the movable supporting plate and can support the movable supporting leg; wherein, under the state that the movable supporting leg is switched between the unfolding state and the recovery state, the linkage component can drive the movable supporting plate to move along with the movable supporting leg.
According to the work machine supporting leg assembly provided by the invention, the linkage assembly comprises a first matching part and a second matching part, the first matching part is arranged on the movable supporting leg, the second matching part is arranged on the movable supporting plate, and the first matching part and the second matching part drive the movable supporting plate to move along with the movable supporting leg when being switched between the unfolding state and the recovery state.
According to the invention, the first matching part comprises a first stopping part and a second stopping part which are spaced; when the movable supporting leg is switched to the unfolding state, the first stopping part and the second matching part stop, and the movable supporting leg drives the movable supporting plate to move; when the movable supporting leg is switched to the recovery state, the second stopping portion and the second matching portion stop, and the movable supporting leg drives the movable supporting plate to move.
According to the leg assembly of the work machine provided by the invention, two opposite side wall surfaces of the second matching part are a first side wall surface and a second side wall surface, the first side wall surface is provided with a first matching arc surface, the second side wall surface is provided with a second matching arc surface, the first stopping part is provided with a third matching arc surface, the second stopping part is provided with a fourth matching arc surface, one of the first matching arc surface and the third matching arc surface is an inner concave arc surface, the other one of the first matching arc surface and the third matching arc surface is an outer convex arc surface, and one of the second matching arc surface and the fourth matching arc surface is an inner concave arc surface and the other one of the second matching arc surface and the fourth matching arc surface is an outer convex arc surface.
According to the supporting leg assembly of the working machine, the supporting leg assembly further comprises an adjustable cushion block, the adjustable cushion block is arranged on the movable supporting plate, and the adjustable cushion block is located between the movable supporting plate and the movable supporting leg.
According to a work machine leg assembly provided by the present invention, the moving support plate includes: the movable supporting part can move relative to the supporting leg box, one end of the movable supporting part is positioned in the supporting leg box, the other end of the movable supporting part is provided with a through hole, and the adjustable cushion block is arranged in the through hole in a penetrating mode; the mounting part is fixedly connected with the movable supporting part and is positioned on one side surface of the movable supporting part, which is far away from the movable supporting leg, and a mounting cavity is arranged in the mounting part and is communicated with the through hole; the adjusting piece is abutted against the adjustable cushion block, in addition, the adjusting piece is in threaded fit with the inner surface of the mounting cavity, and the adjusting piece is suitable for driving the adjustable cushion block to move so that the adjustable cushion block is in contact with the movable supporting leg.
According to the work machine supporting leg assembly provided by the invention, the work machine supporting leg assembly further comprises a fixed cushion block, the fixed cushion block is arranged on the inner wall of the supporting leg box and is used for supporting the movable supporting leg, the fixed cushion block is provided with a thickened part, and the bottom of the supporting leg box is provided with a protruding part used for avoiding the thickened part.
According to the work machine supporting leg assembly provided by the invention, the work machine supporting leg assembly further comprises a bearing supporting plate, the bearing supporting plate is fixedly connected with the supporting leg box, and the bearing supporting plate is used for supporting the movable supporting plate.
According to the leg assembly of the working machine, the leg box comprises a bottom plate, a top plate, a first side plate and a second side plate, the first side plate, the top plate and the second side plate are sequentially connected and define an installation space, the first side plate and the second side plate are oppositely arranged,
the bottom plate is connected between the first side plate and the second side plate, the top plate and the bottom plate are oppositely arranged, the bottom plate is positioned in the installation space and divides the installation space into a first cavity and a second cavity, and the movable supporting leg moves in the first cavity;
the bearing support plate is located in the second cavity, at least one of the first side plate and the second side plate is connected with the bearing support plate, a sliding groove is defined by the bearing support plate and the bottom plate, and the movable support plate moves along the sliding groove.
The invention also provides a working machine, which comprises the working machine support leg assembly.
According to the operation machine and the operation machine supporting leg assembly, the linkage assembly is arranged between the movable supporting plate and the movable supporting leg, the movable supporting leg can synchronously move along with the movable supporting leg in the unfolding and recycling processes, and the movable supporting plate has a supporting effect on the movable supporting leg, so that the movable supporting leg can be prevented from sagging or deforming, the problem that the movable supporting leg sags and deforms due to complete unfolding is solved, and the movement flexibility of the movable supporting leg is improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic illustration of a portion of a work machine leg assembly according to the present disclosure, wherein G is the center of gravity of the movable leg;
FIG. 2 is a partial schematic illustration of a work machine leg assembly of FIG. 1;
FIG. 3 is a top view of the moving support plate of FIG. 1;
FIG. 4 is a schematic diagram illustrating a portion of a leg assembly of a work machine, wherein the second engaging portion is close to the first stopping portion;
FIG. 5 is a schematic diagram illustrating a portion of a leg assembly of a work machine, wherein a second engaging portion is adjacent to a second stopping portion;
reference numerals:
100: a leg assembly; 110: a leg box; 111: a boss portion;
112: a base plate; 113: a top plate; 114: a first side plate;
116: a first chamber; 117: a second chamber; 120: a movable leg;
121: a first stopper portion; 122: a third mating arc surface; 123: a second stopper portion;
124: a fourth mating arc surface; 130: moving the support plate; 131: a second mating portion;
132: a first mating arc surface; 133: a second mating arc surface; 134: a movable support;
135: an installation part; 136: an adjustment member; 140: fixing the cushion block;
150: an adjustable cushion block; 160: bearing the support plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present 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.
The work machine leg assembly 100 and the work machine of the present disclosure are described below with reference to fig. 1-5. It should be noted here that the work machine may be a crane. The crane refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range.
As shown in fig. 1, a work machine leg assembly 100 includes a leg box 110, a movable leg 120, a movable support plate 130, and a linkage assembly.
Specifically, the movable leg 120 is movably disposed in the leg box 110, for example, the movable leg 120 may be inserted in the leg box 110, and the movable leg 120 may move along the leg box 110, that is, the movable leg 120 may be switched between the expanded state and the retracted state. Further, a horizontal cylinder may be used to drive the movable leg 120 to move, and the movable leg 120 may be movably switched between the deployed state and the retracted state. That is, the movable leg 120 is retractable with respect to the leg box 110, and when the movable leg 120 is in the deployed state, the movable leg 120 moves toward the outside of the leg box 110, and part of the structure of the movable leg 120 moves to the outside of the leg box 110; when the movable leg 120 is in the retracted state, the movable leg 120 moves toward the inside of the leg box 110, and a partial structure of the movable leg 120 moves to the inside of the leg box 110.
As shown in fig. 1 and 2, the movable support plate 130 is movable relative to the leg box 110, for example, the movable support plate 130 may be inserted into the leg box 110, and the movable support plate 130 may be movable along the leg box 110. A linkage assembly is disposed between the movable leg 120 and the movable support plate 130, the linkage assembly being capable of supporting the movable leg 120. Wherein, in the state that the movable supporting leg 120 is switched between the unfolding state and the retrieving state, the linkage component can drive the movable supporting plate 130 to move along with the movable supporting leg 120. When the movable support plate 130 moves, the linkage assembly supports the movable leg 120.
According to the leg assembly 100 of the working machine, the linkage assembly is arranged between the movable support plate 130 and the movable leg 120, and the movable leg 120 can synchronously move along with the movable leg 120 in the unfolding and recycling processes, so that the movable support plate 130 has a supporting effect on the movable leg 120, the movable leg 120 can be prevented from sagging or deforming, the problem of sagging and deformation of the movable leg 120 due to complete unfolding is solved, and the movement flexibility of the movable leg 120 is improved.
According to some embodiments of the present invention, as shown in fig. 4 and 5, the linkage assembly includes a first engaging portion and a second engaging portion 131, the first engaging portion is disposed on the movable leg 120, and the second engaging portion 131 is disposed on the movable support plate 130. The movable support leg 120 may not generate relative displacement in the state of switching between the expanded state and the retracted state, and the first matching portion may be linked with the second matching portion 131 to drive the movable support plate 130 to move along with the movable support leg 120.
Thus, during the movement of the movable leg 110, the movable support plate 130 can support the movable leg 120 by the cooperation of the first and second fitting portions 131, so that the movable leg 120 can be prevented from sagging or deforming.
In some embodiments, the first and second fitting portions 131 may be fitted to each other by the travel of the stopper, and achieve the interlocking. For example, the first and second engagement portions 131 are each a stopper structure, and when the movable leg 120 is switched between the deployed state and the retracted state, the first and second engagement portions 131 are stopped by each other to achieve linkage. It should be noted that the linkage form of the first and second matching portions 131 is not limited to this, as long as it can realize linkage, and for example, the first and second matching portions 131 are both hook structures, and when the movable leg 120 moves, the first and second matching portions 131 are buckled with each other, so as to achieve the purpose of linkage.
Further, referring to fig. 4 and 5, the first fitting portion includes a first stopper portion 121 and a second stopper portion 123 spaced apart. When the movable leg 120 is switched to the extended state, the first stopping portion 121 and the second matching portion 131 stop, and the movable leg 120 drives the movable supporting plate 130 to move. When the movable leg 120 is switched to the retracted state, the second stopping portion 123 and the second matching portion 131 stop, and the movable leg 120 drives the movable supporting plate 130 to move.
Like this, the second cooperation portion 131 can cooperate with the backstop portion that corresponds when the activity landing leg 110 is expanding or the in-process of retrieving to can promote the cooperation stability between first cooperation portion and the second cooperation portion 131, and then can promote the motion stability of removing backup pad 130, and then can make and remove backup pad 130 and have better supporting effect.
For example, as shown in fig. 1, 4 and 5, the movable leg 120 has a first stopper 121 and a second stopper 123 spaced apart, and the movable support plate 130 is provided with a second fitting portion 131. The moving support plate 130 is movable between a first position and a second position relative to the leg box 110.
Further, when the movable leg 120 is switched between the deployed state and the retracted state, the center of gravity G of the movable leg 120 is located between the second engagement portion 131 and the end portion of the movable leg 120 located inside the leg box 110. In other words, the movable leg 120 includes opposite ends in the length direction thereof (or in the moving direction thereof), such as a first end and a second end, the first end may be located outside the leg box 110, the second end may be located inside the leg box 110, and the center of gravity G of the movable leg 120 is always located between the second end and the second mating portion 131.
Specifically, when the movable leg 120 is switched to the extended state, the first stopping portion 121 and the second matching portion 131 stop, and the movable leg 120 drives the movable supporting plate 130 to move, so that the movable supporting plate 130 moves from the first position to the second position; when the movable leg 120 is switched to the retracted state, the second stopping portion 123 and the second matching portion 131 stop, and the movable leg 120 drives the movable supporting plate 130 to move, so that the movable supporting plate 130 moves from the second position toward the first position.
It can be understood that, when the horizontal cylinder pushes the movable leg 120 to extend to a certain length, the first stopping portion 121 of the movable leg 120 abuts against the second matching portion 131 of the movable support plate 130, so that the movable leg 120 and the movable support plate 130 move synchronously, and at this time, the movable support plate 130 moves from the first position to the second position, the gravity center G of the movable leg 120 is always located between the second matching portion 131 and the end of the movable leg 120 located inside the leg box 110, that is, the movable support plate 130 always has a supporting effect on the movable leg 120, so that the movable leg 120 can be prevented from sagging.
Similarly, when the movable leg 120 retracts to a certain length under the action of the horizontal cylinder, the second stopping portion 123 of the movable leg 120 stops against the second engaging portion 131 of the movable support plate 130, so that the movable leg 120 and the movable support plate 130 move synchronously, and at this time, the movable leg 120 synchronously pushes the movable support plate 130 to move from the second position toward the first position, and the movable leg 120 is in the retracting state. During the retrieval process, the center of gravity of the movable leg 120 is always located between the second fitting portion 131 and the end portion of the movable leg 120 located inside the leg box 110, so that the movable leg 120 can be flexibly switched between the deployed state and the retrieved state.
Therefore, the second matching part 131 is arranged on the movable supporting plate 130, the first stopping part 121 matched with the second matching part 131 is arranged on the movable supporting leg 120, the movable supporting leg 120 can move synchronously with the movable supporting plate 130 in the unfolding and recycling processes, the gravity center G of the movable supporting leg 120 can be always kept between the second matching part 131 and the end part, located inside the supporting leg box 110, of the movable supporting leg 120, therefore, the movable supporting plate 130 always has a supporting effect on the movable supporting leg 120, the movable supporting leg 120 can be prevented from sagging or deforming, the problems of sagging and deformation of the movable supporting leg 120 due to complete unfolding are solved, and the movement flexibility of the movable supporting leg 120 is improved.
As shown in fig. 2 and 3, according to some embodiments of the present invention, the leg assembly 100 may further include an adjustable spacer 150, the adjustable spacer 150 is disposed on the movable support plate 130, and the adjustable spacer 150 is disposed between the movable support plate 130 and the movable leg 120. That is, the adjustable pad 150 is disposed on the moving support plate 130, and the adjustable pad 150 is located below the movable leg 120 for supporting the movable leg 120. Further, the adjustable spacer 150 may support the movable leg 120 at all times during the switching of the movable leg 120 between the deployed state and the retracted state.
Furthermore, the center of gravity G of the movable leg 120 is set between the adjustable pad 150 and the end of the movable leg 120 inside the leg box 110, so that the movable leg 120 is always supported by the movable support plate 130 during the switching process between the unfolded state and the retracted state of the movable leg 120, thereby preventing the movable leg 120 from sagging or deforming, i.e., solving the problem of sagging or deformation of the movable leg 120 due to complete unfolding.
As shown in fig. 3, in order to ensure the supporting effect of the adjustable cushion block 150, in some embodiments, the adjustable cushion block 150 may be two spaced apart, and the second fitting portion 131 is located between the two adjustable cushion blocks 150. On one hand, the second matching part 131 and the two adjustable spacers 150 can be distributed in a concentrated area, so that the structure of the movable support plate 130 can be simplified, and the structural distribution of the movable support plate 130 can be optimized; on the other hand, the position of the center of gravity G of the movable leg 120 may not only satisfy the condition that the position of the center of gravity G of the movable leg 120 is located between the adjustable pad 150 and the end of the movable leg 120 located inside the leg box 110, but also satisfy the condition that the position of the center of gravity G of the movable leg 120 is located between the second fitting portion 131 and the end of the movable leg 120 located inside the leg box 110, so that the movable support plate 130 may always have a supporting function on the movable leg 120, and prevent the movable leg 120 from sagging or deforming.
In some embodiments, the height of the adjustable spacer 150 is greater than the height of the second fitting portion 131, so that when the movable support plate 130 supports the movable leg 120, the adjustable spacer 150 can contact the movable leg 120, thereby improving the supporting effect of the movable support plate 130. Because the height of the adjustable cushion block 150 is greater than the height of the second matching portion 131, when the adjustable cushion block 150 contacts the movable leg 120, the second matching portion 131 is spaced apart from the movable leg 120, so that the second matching portion 131 can be protected, and the second matching portion 131 is prevented from being damaged due to excessive pressure.
According to some embodiments of the present invention, the adjustable pad 150 may be provided in a height adjustable structure, whereby the height of the adjustable pad 150 may be maintained at a state higher than the height of the second fitting portion 131 during use. In addition, it should be noted that after long-term use, the adjustable cushion block may be worn, which may result in a gap between the adjustable cushion block and the movable leg, and thus, the support of the adjustable cushion block may fail. By setting the adjustable cushion block 150 to be a height-adjustable structure, when a gap occurs between the adjustable cushion block 150 and the movable leg 120, the position of the adjustable cushion block 150 is adjusted, so that the adjustable cushion block 150 and the movable leg 120 can be always kept in a contact state.
In some embodiments, as shown in fig. 2, the moving support plate 130 includes: a moving support 134, a mounting portion 135 and an adjusting member 136. Specifically, the movable support 134 is movable relative to the leg box, one end of the movable support 134 is located in the leg box 110, the other end of the movable support 134 has a through hole, and the adjustable pad 150 is disposed in the through hole. It will be appreciated that the adjustable spacer 150 projects from the travel support 134 toward the end of the movable leg 120 such that the adjustable spacer 150 may contact the movable leg 120 for support.
The mounting portion 135 is fixedly connected to the moving support portion 134, and in conjunction with fig. 2, the mounting portion 135 is located on a side surface of the moving support portion 134 facing away from the movable leg 120. Further, the mounting portion 135 may be welded with the moving support portion 134. The installation part 135 is internally provided with an installation cavity which is communicated with the through hole, and the adjusting piece 136 is in threaded fit with the inner surface of the installation cavity. In this way, the adjustment member 136 may be moved within the mounting cavity by a threaded fit, i.e., the adjustment member 136 may be moved relative to the mounting portion 135 when the adjustment member 136 is threaded.
In order to adjust the height of the adjustable cushion block 150 conveniently, the adjusting member 136 abuts against the adjustable cushion block 150, and when the adjusting member 136 moves, the adjusting member 136 can drive the adjustable cushion block 150 to move, so that the position of the adjustable cushion block 150 can be adjusted, and the adjustable cushion block 150 and the movable leg 120 can be kept in a contact state.
Furthermore, the height-adjustable portion of the adjustable pad 150 may be made of a material with low friction coefficient and wear resistance, such as nylon.
According to some embodiments of the present invention, in conjunction with fig. 1 and 2, the leg assembly 100 further includes a fixed bolster 140 and a load bearing support plate 160. Specifically, as shown in fig. 1, the fixed block 140 is provided on an inner wall of the leg box 110, and the fixed block 140 is used to support the movable leg 120. Therefore, when the movable supporting leg 120 is driven by the horizontal oil cylinder to move, the fixed cushion block 140 can support the movable supporting leg 120, so that the movement stability of the movable supporting leg 120 can be improved.
As shown in fig. 1, the center of gravity G of the movable leg 120 may be disposed between the fixed pad 140 and the adjustable pad 150, so that the movable leg 120 is always supported by the movable support plate 130 during the switching process between the unfolding state and the folding state of the movable leg 120, thereby preventing the movable leg 120 from sagging or deforming, i.e., solving the problem of sagging and deformation of the movable leg 120 due to complete unfolding.
Further, the fixing pad 140 has a thickened portion, and the bottom of the leg box 110 has a boss portion 111 for avoiding the thickened portion. Note that, at the position of the thickened portion of the fixed pad 140, the thickness dimension of the portion is larger than the thickness of the other portions of the fixed pad 140. In this way, the structural strength of the fixing pad 140 may be improved, so that the supporting capability of the fixing pad 140 may be improved, and thus the fixing pad 140 may better support the movable leg 120.
As shown in fig. 2, the bearing support plate 160 is fixedly connected with the leg box 110, and the bearing support plate 160 is used for supporting the moving support plate 130. Here, it should be noted that the bearing support plate 160 may be disposed at a position of the leg box 110 closest to the first position of the movable support plate 130, such that even if the movable support plate 130 moves to the second position, the distance between the bearing support plate 160 and the movable support plate 130 (i.e., the distance between the movable support plate 130 and the leg box 110) is the shortest distance, so that the bearing support plate 160 may support the movable support plate 130 to the greatest extent, and further, the stability of the movable support plate 130 may be improved, so that the movable support plate 130 stably supports the movable legs 120, that is, the bearing support plate 160 may indirectly support the movable legs 120, and improve the stability of the movable legs 120.
Further, as shown in fig. 1 and 2, the leg box 110 may include a bottom plate 112, a top plate 113, a first side plate 114, and a second side plate. The first side plate 114, the top plate 113 and the second side plate are connected in sequence and define an installation space, and the first side plate 114 and the second side plate are arranged oppositely. That is, the first side plate 114, the top plate 113 and the second side plate enclose a cylindrical structure, and the inner space of the cylindrical body can be used as an installation space.
As shown in fig. 1 and 2, the bottom plate 112 is connected between the first side plate 114 and the second side plate, the top plate 113 and the bottom plate 112 are oppositely disposed, and the bottom plate 112 is located in the installation space and divides the installation space into a first cavity 116 and a second cavity 117. The movable leg 120 moves in the first cavity 116, the load support plate 160 is located in the second cavity 117, at least one of the first side plate 114 and the second side plate is connected to the load support plate 160, the load support plate 160 and the bottom plate 112 define a slide slot, and the movable support plate 130 moves along the slide slot. It can be appreciated that the structural characteristics of the leg box 110 are utilized, and the load support plate 160 is utilized to construct the slide groove for limiting the movement of the moving support plate 130, so that the structure of the leg assembly 100 can be simplified, the weight of the leg assembly 100 can be reduced, and the production cost can be saved.
According to some embodiments of the present invention, as shown in fig. 4 and 5, two opposite side wall surfaces of the second matching portion 131 are a first side wall surface and a second side wall surface, the first side wall surface has a first matching arc surface 132, and the second side wall surface has a second matching arc surface 133. The first blocking portion 121 has a third fitting arc surface 122, and the second blocking portion 123 has a fourth fitting arc surface 124. As shown in fig. 4, when the first stopping portion 121 abuts against the second engaging portion 131, the first engaging arc surface 132 is engaged with the third engaging arc surface 122; as shown in fig. 5, when the second stopping portion 123 abuts against the second engaging portion 131, the second engaging curved surface 133 is engaged with the fourth engaging curved surface 124. Further, one of the first mating curved surface 132 and the third mating curved surface 122 is a concave curved surface, the other is a convex curved surface, and one of the second mating curved surface 133 and the fourth mating curved surface 124 is a concave curved surface, the other is a convex curved surface.
Thus, when the movable supporting plate 130 is located at the first position, as shown in fig. 4, the relative positions of the second matching portion 131 and the first stopping portion 121 can be corrected by the fitting fit between the arc surfaces, and further, the relative position between the movable supporting plate 130 and the movable leg 120 can be adjusted, so that the supporting effect of the movable supporting plate 130 can be improved; similarly, when the movable supporting plate 130 is located at the second position, as shown in fig. 5, the relative positions of the second engaging portion 131 and the second stopping portion 123 can be corrected by the engaging engagement between the arc surfaces, and then the relative position between the movable supporting plate 130 and the movable leg 120 can be adjusted, so that the supporting effect of the movable supporting plate 130 can be improved, and the movable leg 120 can be effectively prevented from sagging.
In some examples, the second fitting portion 131 is integrally formed with the moving support plate 130, so that an assembling process of the second fitting portion 131 may be simplified, and a connection strength between the second fitting portion 131 and the moving support plate 130 may be improved. It is understood that the connection manner between the second fitting portion 131 and the moving support plate 130 is not limited thereto, for example, in some examples, the second fitting portion 131 may be fixedly connected with the moving support plate 130 by a screw. It should be noted that, during the use of the leg assembly 100, the second matching portion 131 belongs to a part which is easily worn, and by using the screw structure to mount the second matching portion 131 on the movable support plate 130, after the leg assembly 100 is used for a long time, when the second matching portion 131 is worn, the second matching portion 131 is convenient to repair or replace.
A work machine according to an embodiment of the present disclosure includes a work machine leg assembly 100 as described above. Wherein, through set up the linkage subassembly between removal backup pad 130 and activity landing leg 120, activity landing leg 120 is expanding, retrieve the in-process, and removal backup pad 130 can be along with activity landing leg 120 simultaneous movement, removes backup pad 130 from this and has a supporting role to activity landing leg 120 to can prevent that activity landing leg 120 from flagging or deformation, also solved activity landing leg 120 because of the flagging that develops completely, the problem of deformation, and then promoted the motion flexibility of activity landing leg 120.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A work machine leg assembly, comprising:
a leg box;
the movable supporting leg is movably arranged in the supporting leg box and can be switched between an unfolding state and a recovery state;
a movable support plate movable relative to the leg box;
the linkage assembly is arranged between the movable supporting leg and the movable supporting plate and can support the movable supporting leg;
wherein, under the state that the movable supporting leg is switched between the unfolding state and the recovery state, the linkage component can drive the movable supporting plate to move along with the movable supporting leg.
2. The work machine leg assembly of claim 1, wherein the linkage assembly includes a first engagement portion and a second engagement portion, the first engagement portion being disposed on the movable leg, the second engagement portion being disposed on a movable support plate, the first engagement portion and the second engagement portion being configured to drive the movable support plate to move with the movable leg when switched between the deployed state and the retracted state.
3. The work machine leg assembly as in claim 2, wherein the first mating portion comprises first and second spaced stops;
when the movable supporting leg is switched to the unfolding state, the first stopping part and the second matching part stop, and the movable supporting leg drives the movable supporting plate to move; when the movable supporting leg is switched to the recovery state, the second stopping portion and the second matching portion stop, and the movable supporting leg drives the movable supporting plate to move.
4. The work machine leg assembly as defined in claim 3 wherein the two opposing side wall surfaces of the second engagement portion are a first side wall surface and a second side wall surface, the first side wall surface having a first engagement contour and the second side wall surface having a second engagement contour,
the first stopping portion is provided with a third matching arc surface, the second stopping portion is provided with a fourth matching arc surface, one of the first matching arc surface and the third matching arc surface is an inner concave arc surface, the other one of the first matching arc surface and the third matching arc surface is an outer convex arc surface, one of the second matching arc surface and the fourth matching arc surface is an inner concave arc surface, and the other one of the second matching arc surface and the fourth matching arc surface is an outer convex arc surface.
5. The work machine leg assembly as in claim 1 further comprising an adjustable spacer disposed between the movable support plate and the movable leg.
6. The work machine leg assembly as in claim 5, wherein the mobile support plate comprises:
the movable supporting part can move relative to the supporting leg box, one end of the movable supporting part is positioned in the supporting leg box, the other end of the movable supporting part is provided with a through hole, and the adjustable cushion block is arranged in the through hole in a penetrating mode;
the mounting part is fixedly connected with the movable supporting part and is positioned on one side surface of the movable supporting part, which is far away from the movable supporting leg, and a mounting cavity is arranged in the mounting part and is communicated with the through hole;
the adjusting piece is abutted against the adjustable cushion block, in addition, the adjusting piece is in threaded fit with the inner surface of the mounting cavity, and the adjusting piece is suitable for driving the adjustable cushion block to move so that the adjustable cushion block is in contact with the movable supporting leg.
7. The work machine leg assembly as set forth in claim 1 further comprising a fixed bolster disposed on an inner wall of said leg box for supporting said movable leg, said fixed bolster having a thickened portion, said leg box bottom having a boss for avoiding said thickened portion.
8. The work machine leg assembly as in claim 1, further comprising a load support plate fixedly connected to the leg box and configured to support the mobile support plate.
9. The work machine leg assembly as defined in claim 8, wherein the leg box includes a bottom panel, a top panel, a first side panel and a second side panel, the first side panel, the top panel and the second side panel being connected in series and defining an installation space, the first side panel and the second side panel being disposed opposite each other,
the bottom plate is connected between the first side plate and the second side plate, the top plate and the bottom plate are oppositely arranged, the bottom plate is positioned in the installation space and divides the installation space into a first cavity and a second cavity,
the movable leg moves within the first cavity;
the bearing support plate is located in the second cavity, at least one of the first side plate and the second side plate is connected with the bearing support plate, a sliding groove is defined by the bearing support plate and the bottom plate, and the movable support plate moves along the sliding groove.
10. A work machine, characterized by comprising a leg assembly of a work machine according to any one of claims 1-9.
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| CN202110872138.0A CN113501449B (en) | 2021-07-30 | 2021-07-30 | Work machine and work machine leg assembly |
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| CN202110872138.0A CN113501449B (en) | 2021-07-30 | 2021-07-30 | Work machine and work machine leg assembly |
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| CN113501449B CN113501449B (en) | 2023-05-09 |
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| CN115626561A (en) * | 2022-12-22 | 2023-01-20 | 江苏朗恩机械制造有限公司 | Supporting leg box structure of crane |
| CN117208791A (en) * | 2023-09-25 | 2023-12-12 | 河南骏通车辆有限公司 | Double-support leg structure and automobile crane |
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| Publication number | Publication date |
|---|---|
| CN113501449B (en) | 2023-05-09 |
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