CN113501449B - Work machine and work machine leg assembly - Google Patents
Work machine and work machine leg assembly Download PDFInfo
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- CN113501449B CN113501449B CN202110872138.0A CN202110872138A CN113501449B CN 113501449 B CN113501449 B CN 113501449B CN 202110872138 A CN202110872138 A CN 202110872138A CN 113501449 B CN113501449 B CN 113501449B
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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 support leg is movably arranged in the support leg box and can be switched between an unfolding state and a recovery state. The linkage assembly is arranged between the movable supporting leg and the movable supporting plate and can support the movable supporting leg; the linkage assembly can drive the movable supporting plate to move along with the movable supporting leg in a state that the movable supporting leg is switched between an unfolding state and a recovery state. Like this, the movable supporting leg is in expansion, retrieve the in-process, and the movable supporting plate can be along with movable supporting leg synchronous motion, and movable supporting plate has the supporting role to movable supporting leg from this to can prevent movable supporting leg sagging or deformation, also solved the problem that the movable supporting leg sags, deformation appears because of expanding completely promptly, and then promoted the motion flexibility of movable supporting leg.
Description
Technical Field
The invention relates to the technical field of hoisting equipment, in particular to a working machine and a working machine support leg assembly.
Background
The hoisting equipment has wide application in various construction, loading and unloading occasions. The large movable hoisting equipment such as a crane has the advantages of good mobility and rapid transfer, the hoisting equipment is provided with a plurality of supporting legs, and the supporting legs have the function of providing supporting force for the hoisting equipment when the hoisting equipment performs hoisting operation, so that the hoisting equipment is an indispensable composition structure in the hoisting equipment.
In the related art, the design of the supporting leg span is often quite large so as to meet the stability of the supporting leg during operation, and when the movable supporting leg is completely extended, the two vertical supporting legs along the width direction of the lifting equipment are always contacted with the ground. Further, for easy assembly and disassembly, the movable leg and the leg box must have sufficient clearance in the vertical direction.
When the lifting equipment is ready for operation, the movable supporting leg is required to be fully extended, the vertical supporting leg is not contacted with the ground at the moment, the overlapping position of the movable supporting leg and the supporting leg box has a downward pressing trend under the dead weight action of the movable supporting leg, and the gravity center of the movable supporting leg is always positioned outside the supporting leg box and exceeds a cushion block at the mouth. And the movable supporting leg always sags at the moment, when the sagging amount is too large, the movable supporting leg is difficult to retract, and the normal operation of the crane is influenced.
Disclosure of Invention
The invention provides a working machine and a working machine support leg assembly, which are used for solving the defect that a movable support leg is easy to sag in the prior art, realizing flexible unfolding and recycling of the movable support leg, and being difficult to sag and deform.
The present invention provides a work machine leg assembly comprising: the support leg box, movable support leg and movable support plate. The movable supporting leg is movably arranged in the supporting leg box and can be switched between an unfolding state and a recycling 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; the linkage assembly can drive the movable supporting plate to move along with the movable supporting leg in a state that the movable supporting leg is switched between the unfolding state and the recovery state.
According to the working machine support leg assembly provided by the invention, the linkage assembly comprises the first matching part and the second matching part, the first matching part is arranged on the movable support leg, the second matching part is arranged on the movable support plate, and the first matching part and the second matching part are used for driving the movable support plate to move along with the movable support leg when being switched between the unfolding state and the recovery state.
According to the present disclosure, a work machine leg assembly is provided, the first mating portion including first and second spaced apart stops; when the movable supporting leg is switched to the unfolding state, the first stop part and the second matching part are stopped, 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 stop part is stopped against the second matching part, and the movable supporting leg drives the movable supporting plate to move.
According to the working machine support leg assembly 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 cambered surface, the second side wall surface is provided with a second matching cambered surface, the first stop part is provided with a third matching cambered surface, the second stop part is provided with a fourth matching cambered surface, one of the first matching cambered surface and the third matching cambered surface is a concave cambered surface, the other one of the first matching cambered surface and the third matching cambered surface is a convex cambered surface, the other one of the second matching cambered surface and the fourth matching cambered surface is a concave cambered surface, and the other one of the second matching cambered surface and the fourth matching cambered surface is a convex cambered surface.
The support leg assembly of the working machine further comprises an adjustable cushion block, wherein the adjustable cushion block is arranged on the movable support plate, and the adjustable cushion block is arranged between the movable support plate and the movable support leg.
According to the present invention there is provided a work machine leg assembly, the movable support plate comprising: 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 way; the mounting part is fixedly connected with the movable supporting part and is positioned on the surface of one side of the movable supporting part, which is away from the movable supporting leg, and a mounting cavity is formed in the mounting part and is communicated with the through hole; the adjusting piece is abutted to the adjustable cushion block and 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.
The invention provides a support leg assembly of a working machine, which further comprises a fixed cushion block, wherein the fixed cushion block is arranged on the inner wall of a support leg box and used for supporting the movable support leg, the fixed cushion block is provided with a thickening part, and the bottom of the support leg box is provided with a protruding part for avoiding the thickening part.
The support leg assembly of the working machine further comprises a bearing support plate, wherein the bearing support plate is fixedly connected with the support leg box and used for supporting the movable support plate.
According to the leg assembly of the working machine provided by the invention, the leg box comprises a bottom plate, a top plate, a first side plate and a second side plate, wherein 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 positioned in the second cavity, at least one of the first side plate and the second side plate is connected with the bearing support plate, the bearing support plate and the bottom plate define a chute, and the movable support plate moves along the chute.
The present invention also provides a work machine comprising a work machine leg assembly as described above.
According to the working machine and the working machine support leg assembly, the linkage assembly is arranged between the movable support plate and the movable support leg, and the movable support leg can synchronously move along with the movable support leg in the unfolding and recycling processes, so that the movable support plate has a supporting effect on the movable support leg, and the movable support leg can be prevented from sagging or deforming, namely the problem of sagging and deforming of the movable support leg due to complete unfolding is solved, and the movement flexibility of the movable support leg is further improved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a portion of a work machine leg assembly according to the present invention, wherein G is the center of gravity of the movable leg;
FIG. 2 is a schematic illustration of a partial construction of the work machine leg assembly of FIG. 1;
FIG. 3 is a top view of the movable support plate of FIG. 1;
FIG. 4 is a schematic view of a portion of a work machine leg assembly according to the present disclosure, wherein the second mating portion is adjacent the first stop portion;
FIG. 5 is a schematic view of a portion of a work machine leg assembly according to the present disclosure, wherein a second mating portion is adjacent a second stop portion;
reference numerals:
100: a work machine leg assembly; 110: a leg box; 111: a boss;
112: a bottom plate; 113: a top plate; 114: a first side plate;
116: a first chamber; 117: a second chamber; 120: a movable support leg;
121: a first stop portion; 122: a third mating arcuate surface; 123: a second stop portion;
124: a fourth mating arcuate surface; 130: a movable support plate; 131: a second mating portion;
132: a first mating arcuate surface; 133: a second mating arcuate surface; 134: a movable support part;
135: a mounting part; 136: an adjusting member; 140: fixing the cushion block;
150: an adjustable cushion block; 160: the support plate is carried.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The work machine leg assembly 100 and work machine of the present invention are described below in connection with fig. 1-5. Here, the work machine may be a crane. A crane refers to a multi-action lifting machine that vertically lifts and horizontally conveys weights within a certain range.
As shown in fig. 1, the 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 provided 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 be moved along the leg box 110, that is, the movable leg 120 may be switched between the deployed state and the retracted state. Further, a horizontal cylinder may be used to drive the movable leg 120 in motion, and the movable leg 120 may be movable between a deployed state and a retracted state. That is, the movable leg 120 is retractable with respect to the leg box 110, when the movable leg 120 is in the unfolded state, the movable leg 120 moves toward the outside of the leg box 110, and a 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 part of the 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 may be movable with respect 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. The linkage assembly is disposed between the movable leg 120 and the movable support plate 130, and the linkage assembly can support the movable leg 120. In a state that the movable leg 120 is switched between the deployed state and the retracted state, the linkage assembly can drive the movable support plate 130 to move along with the movable leg 120. The movable support plate 130 supports the movable leg 120 by the linkage assembly when moving.
According to the working machine leg assembly 100 of the embodiment of the invention, the linkage assembly is arranged between the movable supporting plate 130 and the movable supporting leg 120, and the movable supporting plate 130 can synchronously move along with the movable supporting leg 120 in the unfolding and recycling processes of the movable supporting leg 120, so that the movable supporting plate 130 has a supporting effect on the movable supporting leg 120, and the movable supporting leg 120 can be prevented from sagging or deforming, namely the problems of sagging and deforming of the movable supporting leg 120 caused by complete unfolding are solved, and the movement flexibility of the movable supporting leg 120 is further improved.
According to some embodiments of the present invention, as shown in fig. 4 and 5, the linkage assembly includes a first mating portion and a second mating portion 131, the first mating portion is disposed on the movable leg 120, and the second mating portion 131 is disposed on the movable support plate 130. The movable supporting leg 120 may not generate relative displacement in a state of switching between the unfolded state and the retracted state, and the first matching portion may be linked with the second matching portion 131 to drive the movable supporting plate 130 to move along with the movable supporting leg 120.
Thus, the movable support plate 130 may play a supporting role for the movable support leg 120 under the cooperation of the first and second cooperation parts 131 during the movement of the movable support leg 120, so that sagging or deformation of the movable support leg 120 may be prevented.
In some embodiments, the first and second engaging portions 131 may engage with each other by running of the stopper, and achieve the interlocking. For example, the first engaging portion and the second engaging portion 131 are both of a stop structure, and when the movable leg 120 is switched between the deployed state and the retracted state, the first engaging portion and the second engaging portion 131 stop against each other for achieving the linkage. It should be noted that, the linkage form of the first mating portion and the second mating portion 131 is not limited to this, so long as it can achieve linkage, for example, the first mating portion and the second mating portion 131 are both hook structures, and when the movable leg 120 moves, the first mating portion and the second mating portion 131 are buckled with each other, so as to achieve the purpose of linkage.
Further, referring to fig. 4 and 5, the first mating portion includes first and second spaced apart stoppers 121 and 123. When the movable leg 120 is switched to the unfolded state, the first stop portion 121 and the second matching portion 131 stop, and the movable leg 120 drives the movable support plate 130 to move. When the movable supporting leg 120 is switched to the recovery state, the second stopping portion 123 and the second matching portion 131 stop, and the movable supporting leg 120 drives the movable supporting plate 130 to move.
Like this, movable support 120 is in the in-process of expansion or retrieving, and second cooperation portion 131 can cooperate with the backstop portion that corresponds to can promote the cooperation stability between first cooperation portion and the second cooperation portion 131, and then can promote the motion stability of moving backup pad 130, and then can make moving backup pad 130 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 movable support plate 130 is movable relative to the leg box 110 between a first position and a second position.
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 fitting portion 131, 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 its length direction (or in its moving direction), for example, 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 fitting portion 131.
Specifically, when the movable leg 120 is switched to the unfolded state, the first stop portion 121 and the second mating portion 131 are stopped, and the movable leg 120 drives the movable support plate 130 to move, so that the movable support plate 130 moves from the first position toward the second position; when the movable leg 120 is switched to the recovery state, the second stop portion 123 and the second matching portion 131 stop, and the movable leg 120 drives the movable support plate 130 to move, so that the movable support plate 130 moves from the second position toward the first position.
It will be appreciated that when the horizontal cylinder pushes the movable leg 120 to extend to a certain length, the first stop portion 121 of the movable leg 120 is stopped against the second engagement portion 131 of the movable support plate 130, so that the movable leg 120 moves synchronously with the movable support plate 130, and at this time, the movable support plate 130 moves from the first position toward the second position, and the center of gravity G of the movable leg 120 is always located between the second engagement portion 131 and the end portion 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 sagging of the movable leg 120 can be prevented.
Similarly, when the movable leg 120 is retracted to a certain length under the action of the horizontal cylinder, the second stop portion 123 on the movable leg 120 is stopped against the second matching portion 131 of the movable support plate 130, so that the movable leg 120 moves synchronously with the movable support plate 130, 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 retracted state. During the recovery 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 recovery state.
Therefore, by arranging the second matching portion 131 on the movable supporting plate 130 and arranging the first stop portion 121 matched with the second matching portion 131 on the movable supporting leg 120, the movable supporting leg 120 and the movable supporting plate 130 can synchronously move in the unfolding and recycling processes, the gravity center G of the movable supporting leg 120 can be always kept between the second matching portion 131 and the end portion, located inside the supporting leg box 110, of the movable supporting leg 120, and therefore the movable supporting plate 130 always has a supporting function on the movable supporting leg 120, sagging or deformation of the movable supporting leg 120 can be prevented, namely the problems of sagging and deformation of the movable supporting leg 120 caused by complete unfolding are solved, and the movement flexibility of the movable supporting leg 120 is further improved.
As shown in fig. 2 and 3, the work machine leg assembly 100 may further include an adjustable spacer 150, the adjustable spacer 150 being disposed on the movable support plate 130, the adjustable spacer 150 being disposed between the movable support plate 130 and the movable leg 120, in accordance with some embodiments of the present invention. That is, the adjustable spacer 150 is disposed on the movable support plate 130, and the adjustable spacer 150 is located below the movable leg 120 for supporting the movable leg 120. Further, the adjustable spacer 150 may always support the movable leg 120 during the switching of the movable leg 120 between the deployed state and the retracted state.
Further, the center of gravity G of the movable leg 120 is disposed between the adjustable cushion 150 and the end of the movable leg 120 located inside the leg box 110, so that the movable support plate 130 has a supporting effect on the movable leg 120 all the time during the process of switching 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 sagging or deforming problems of the movable leg 120 due to complete unfolding.
As shown in fig. 3, in order to secure the supporting effect of the adjustable spacer 150, in some embodiments, the adjustable spacer 150 may be two spaced apart, and the second fitting portion 131 is located between the two adjustable spacers 150. On the one hand, the second fitting portion 131 and the two adjustable spacers 150 may be distributed in the concentration area, so that the structure of the movable support plate 130 may be simplified, and the structural distribution of the movable support plate 130 may be optimized; on the other hand, the position of the center of gravity G of the movable leg 120 can be made to satisfy not only the condition that the center of gravity G of the movable leg 120 is provided between the adjustable spacer 150 and the end of the movable leg 120 located inside the leg box 110, but also the condition that the center of gravity G of the movable leg 120 is provided 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 can be made to always support the movable leg 120, preventing 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 support leg 120, the adjustable spacer 150 can contact the movable support leg 120, thereby improving the supporting effect of the movable support plate 130. Since the height of the adjustable spacer 150 is greater than the height of the second fitting portion 131, when the adjustable spacer 150 contacts the movable leg 120, the second fitting portion 131 is spaced apart from the movable leg 120, so that the second fitting portion 131 can be protected from damage due to excessive pressure of the second fitting portion 131.
According to some embodiments of the present invention, the adjustable spacer 150 may be provided in a height-adjustable structure, whereby the height of the adjustable spacer 150 may be maintained in a state higher than the height of the second fitting part 131 during use. In addition, it should be noted that after a long-term use, the adjustable cushion may wear, which may cause a gap between the adjustable cushion and the movable leg, and further cause a support failure of the adjustable cushion. By setting the height-adjustable cushion block 150 to be of a height-adjustable structure, when a gap is formed between the adjustable cushion block 150 and the movable supporting leg 120, the position of the adjustable cushion block 150 is adjusted, so that the contact state between the adjustable cushion block 150 and the movable supporting leg 120 can be always maintained.
In some embodiments, as shown in fig. 2, the moving support plate 130 includes: the moving support 134, the mounting portion 135, and the adjuster 136. Specifically, the movable supporting portion 134 is movable relative to the leg box, one end of the movable supporting portion 134 is located in the leg box 110, the other end of the movable supporting portion 134 has a through hole, and the adjustable pad 150 is disposed through the through hole. It will be appreciated that the end of the adjustable spacer 150 facing the movable leg 120 protrudes from the movable support 134, so that the adjustable spacer 150 can contact the movable leg 120 to provide a supporting function.
The mounting portion 135 is fixedly connected to the movable supporting portion 134, and referring to fig. 2, the mounting portion 135 is located on a surface of the movable supporting portion 134 facing away from the movable leg 120. Further, the mounting portion 135 may be welded to the moving support 134. The mounting portion 135 has a mounting cavity therein, the mounting cavity communicates with the through hole, and the regulating member 136 is screw-fitted to an inner surface of the mounting cavity. In this way, the adjustment member 136 can be moved inside the mounting cavity by a screw-fit, i.e. the adjustment member 136 can be moved relative to the mounting portion 135 when the adjustment member 136 is screwed with a screw.
In order to facilitate the adjustment of the height of the adjustable spacer 150, the adjusting member 136 is stopped against the adjustable spacer 150, and when the adjusting member 136 moves, the adjusting member 136 can drive the adjustable spacer 150 to move, so that the position of the adjustable spacer 150 can be adjusted, and the adjustable spacer 150 is kept in contact with the movable leg 120.
Further, the height-adjustable portion of the adjustable pad 150 may be made of a material with low friction coefficient, such as nylon.
In accordance with some embodiments of the present invention, and in conjunction with fig. 1 and 2, work machine leg assembly 100 further includes a fixed pad 140 and a load bearing support plate 160. Specifically, as shown in fig. 1, a fixed pad 140 is provided on an inner wall of the leg box 110, and the fixed pad 140 is used to support the movable leg 120. Therefore, when the horizontal cylinder drives the movable supporting leg 120 to move, the fixed cushion block 140 can play a role in supporting 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 support plate 130 has a supporting effect on the movable leg 120 all the time in the process of switching 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 sagging and deformation problems 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 convex portion 111 for avoiding the thickened portion. At the position of the thickened portion of the fixed pad 140, the thickness of the portion is greater than the thickness of the other portion of the fixed pad 140. In this way, the structural strength of the fixed pad 140 can be improved, so that the supporting capability of the fixed pad 140 can be improved, and the fixed pad 140 can better support the movable leg 120.
As shown in fig. 2, the carrying support plate 160 is fixedly connected with the leg box 110, and the carrying 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, so 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 may promote stability of the movable support plate 130, so that the movable support plate 130 stably supports the movable support 120, i.e., the bearing support plate 160 may indirectly support the movable support 120, and promote stability of the movable support 120.
Further, as shown in connection with fig. 1 and 2, the leg box 110 may include a bottom panel 112, a top panel 113, a first side panel 114, and a second side panel. The first side plate 114, the top plate 113 and the second side plate are sequentially connected and define an installation space, and the first side plate 114 and the second side plate are disposed opposite to each other. That is, the first side plate 114, the top plate 113, and the second side plate enclose a cylindrical structure where the cylindrical body inner space may be 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 disposed opposite to each other, 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 within the first cavity 116, the load bearing support plate 160 is positioned within the second cavity 117, at least one of the first side plate 114 and the second side plate is coupled to the load bearing support plate 160, the load bearing support plate 160 and the bottom plate 112 define a chute along which the movable support plate 130 moves. It will be appreciated that by utilizing the structural characteristics of the leg box 110 and utilizing the load bearing support plate 160 to construct a chute that defines the movement of the movable support plate 130, the construction of the work machine leg assembly 100 may be simplified, the weight of the work machine leg assembly 100 may be reduced, and the production costs may be saved.
According to some embodiments of the present invention, as shown in fig. 4 and 5, two opposite side walls of the second mating portion 131 are a first side wall and a second side wall, where the first side wall has a first mating cambered surface 132, and the second side wall has a second mating cambered surface 133. The first stop portion 121 has a third mating arcuate surface 122, and the second stop portion 123 has a fourth mating arcuate surface 124. As shown in fig. 4, when the first stop portion 121 abuts against the second engagement portion 131, the first engagement cambered surface 132 is engaged with the third engagement cambered surface 122; as shown in fig. 5, when the second stopper 123 abuts against the second engaging portion 131, the second engaging cambered surface 133 is engaged with the fourth engaging cambered surface 124. Further, one of the first mating cambered surface 132 and the third mating cambered surface 122 is a concave cambered surface, the other is a convex cambered surface, one of the second mating cambered surface 133 and the fourth mating cambered surface 124 is a concave cambered surface, and the other is a convex cambered surface.
Thus, when the movable support plate 130 is located at the first position, as shown in fig. 4, the relative position between the second mating portion 131 and the first stop portion 121 can be corrected by using the fitting between the cambered surfaces, so that the relative position between the movable support plate 130 and the movable support leg 120 can be adjusted, and the supporting effect of the movable support plate 130 can be improved; similarly, when the movable support plate 130 is located at the second position, as shown in fig. 5, the relative position between the second engaging portion 131 and the second stopping portion 123 can be corrected by using the engaging engagement between the cambered surfaces, so that the relative position between the movable support plate 130 and the movable support leg 120 can be adjusted, thereby improving the supporting effect of the movable support plate 130 and effectively preventing the movable support leg 120 from sagging.
In some examples, the second fitting part 131 is integrally formed with the moving support plate 130, so that an assembling process of the second fitting part 131 can be simplified, and a connection strength between the second fitting part 131 and the moving support plate 130 can be improved. It should be appreciated that the connection manner between the second fitting portion 131 and the movable support plate 130 is not limited thereto, and for example, in some examples, the second fitting portion 131 may be fixedly connected with the movable support plate 130 by a screw. It should be noted that, during the use of the working machine leg assembly 100, the second mating portion 131 belongs to a portion that is easy to wear, and the second mating portion 131 is mounted on the movable support plate 130 by using a screw structure, so that the working machine leg assembly 100 is convenient to repair or replace when the second mating portion 131 wears after long-term use.
A work machine according to an embodiment of the present invention includes a work machine leg assembly 100 as described above. Wherein, through setting up the linkage subassembly between movable support board 130 and movable support 120, movable support board 120 is in expansion, retrieve the in-process, and movable support board 130 can be along with movable support 120 synchronous motion, and movable support board 130 has the supporting role to movable support 120 from this to can prevent movable support 120 sagging or deformation, also solved movable support 120 because of the problem of sagging, deformation that the complete expansion appears promptly, and then promoted movable support 120's motion flexibility.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the 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;
the linkage assembly can drive the movable supporting plate to move along with the movable supporting leg in a state that the movable supporting leg is switched between the unfolding state and the recovery state.
2. The work machine leg assembly of claim 1, wherein the linkage assembly includes a first mating portion and a second mating portion, the first mating portion being disposed on the movable leg, the second mating portion being disposed on a movable support plate, the first mating portion and the second mating portion being configured to move with the movable support plate when the first mating portion and the second mating portion are switched between the deployed state and the retracted state.
3. The work machine leg assembly of claim 2, wherein the first mating portion includes first and second spaced apart stops;
when the movable supporting leg is switched to the unfolding state, the first stop part and the second matching part are stopped, 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 stop part is stopped against the second matching part, and the movable supporting leg drives the movable supporting plate to move.
4. The work machine leg assembly according to claim 3, wherein the two opposing side wall surfaces of the second mating portion are a first side wall surface having a first mating arcuate surface and a second side wall surface having a second mating arcuate surface,
the first stop part is provided with a third matched cambered surface, the second stop part is provided with a fourth matched cambered surface, one of the first matched cambered surface and the third matched cambered surface is a concave cambered surface, the other is a convex cambered surface, one of the second matched cambered surface and the fourth matched cambered surface is a concave cambered surface, and the other is a convex cambered surface.
5. The work machine leg assembly of claim 1, further comprising an adjustable spacer disposed on the movable support plate, the adjustable spacer being positioned between the movable support plate and the movable leg.
6. The work machine leg assembly according to claim 5, wherein the movable 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 way;
the mounting part is fixedly connected with the movable supporting part and is positioned on the surface of one side of the movable supporting part, which is away from the movable supporting leg, and a mounting cavity is formed in the mounting part and is communicated with the through hole;
the adjusting piece is abutted to the adjustable cushion block and 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 of claim 1, further comprising a fixed pad disposed on an inner wall of the leg box, the fixed pad being adapted to support the movable leg, the fixed pad having a thickened portion, the leg box bottom having a raised portion adapted to clear the thickened portion.
8. The work machine leg assembly of claim 1, further comprising a load bearing support plate fixedly connected to the leg box and configured to support the movable support plate.
9. The work machine leg assembly according to claim 8, wherein the leg box includes 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 being connected in sequence and defining an installation space, the first side plate and the second side plate 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 support leg moves in the first cavity;
the bearing support plate is positioned in the second cavity, at least one of the first side plate and the second side plate is connected with the bearing support plate, the bearing support plate and the bottom plate define a chute, and the movable support plate moves along the chute.
10. A work machine comprising a work machine leg assembly according to any one of claims 1 to 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 true CN113501449B (en) | 2023-05-09 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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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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| CN113501449A (en) | 2021-10-15 |
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