Barycentre adjustment device and engineering machine

Abstract

The application relates to the technical field of gravity center adjusting devices for engineering machinery, and in particular to a gravity center adjusting device and engineering machinery. The gravity center adjusting device comprises a counterweight mechanism, a support, a translation supporting mechanism and a telescopic driving mechanism. The two ends of the support are pivotally connected with the engineering machinery and the counterweight mechanism respectively. The translation supporting mechanism is configured to assist the support in supporting the counterweight mechanism to move. The telescopic driving mechanism is configured to drive the counterweight mechanism to move relative to the engineering machinery through telescopic movement. In use, the telescopic movement of the telescopic driving mechanism can drive the counterweight mechanism to move close to or away from the engineering machinery at any time. The translation supporting mechanism can provide effective auxiliary support when the counterweight mechanism moves, so that the counterweight mechanism can move more stably. The application does not need to use a telescopic beam type structure to drive the counterweight mechanism to move close to or away from the engineering machinery, thereby avoiding various defects caused by using a telescopic beam to control the movement of the counterweight.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of center of gravity adjustment of construction machinery, and particularly relates to a center of gravity adjustment device and construction machinery. BACKGROUND

[0002] When the construction machinery is working, it needs to stabilize the front and rear moments to maintain the balance. Usually, a counterweight is arranged at the tail of the construction machinery, and a telescopic beam is arranged between the counterweight and the construction machinery. The rear movement of the center of gravity of the counterweight is realized by the sliding of the telescopic beam in the tail of the frame body of the construction machinery. This scheme can conveniently adjust the center of gravity of the construction machinery together with the counterweight mechanism to achieve better balance, but has the following disadvantages and problems: when the counterweight moves backward, the overlapping degree of the telescopic beam and the tail of the frame body becomes smaller and smaller, the interaction force between them becomes larger and larger, and the sliding frictional resistance also becomes larger and larger; the telescopic beam needs multiple telescopic cylinders and multiple sliding blocks, and the structure is relatively complex; there is a gap between the telescopic beam and the tail of the frame body, and the construction machinery is prone to shaking during driving; and in order to ensure smooth extension, the process and strength of the telescopic beam are required to be high. In summary, how to overcome the defects caused by the connection of the counterweight and the construction machinery by the telescopic beam structure is a technical problem to be solved in the field. SUMMARY

[0003] Therefore, the present application provides a center of gravity adjustment device and construction machinery, which can avoid the defects caused by the connection of the counterweight and the construction machinery by the telescopic beam structure.

[0004] In a first aspect, the present application provides a center of gravity adjustment device, which comprises: a counterweight mechanism; a support, two ends of which are respectively pivotally connected with a construction machinery and the counterweight mechanism; a translation support mechanism, which is connected with the counterweight mechanism and the construction machinery respectively, and is configured to assist the support to support the movement of the counterweight mechanism; and a telescopic driving mechanism, one end of which is pivotally connected with the construction machinery, and the other end of which is connected with the counterweight mechanism in linkage, and the telescopic driving mechanism is configured to drive the movement of the counterweight mechanism relative to the construction machinery by telescopic motion; wherein a second pivot shaft, at which the support and the counterweight mechanism are pivotally connected with each other, is located on a side of a reference plumb plane, on which the overall center of gravity of the counterweight mechanism is located, away from the construction machinery, and the reference plumb plane is parallel to the second pivot shaft.

[0005] In use, the counterweight mechanism can rotate or move based on the support, and the center of gravity of the counterweight mechanism moves along an arc trajectory during movement, so as to adjust the position of the center of gravity of the counterweight mechanism together with the engineering machinery, that is, to adjust the front and rear moment of the engineering machinery. The telescopic movement of the telescopic driving mechanism can drive the counterweight mechanism to approach or move away from the engineering machinery at any time. The translational support mechanism can provide effective auxiliary support when the counterweight mechanism moves, so that the counterweight mechanism can move more stably without overturning. The present aspect does not need to use a telescopic beam type structure to drive the counterweight mechanism to approach or move away from the engineering machinery, avoiding various defects caused by using a telescopic beam to control the movement of the counterweight.

[0006] In combination with the first aspect, in a possible implementation manner, the translational support mechanism comprises: a connecting rod, one end of the connecting rod being pivoted to the engineering machinery, and the other end of the connecting rod being pivoted to the counterweight mechanism.

[0007] In combination with the first aspect, in a possible implementation manner, the first common perpendicular line segment and the second common perpendicular line segment are parallel to each other and have equal lengths, wherein the first common perpendicular line segment is a common perpendicular line segment between a first pivoting shaft and a second pivoting shaft, the first pivoting shaft being a pivoting shaft of the support to the engineering machinery, and the second pivoting shaft being a pivoting shaft of the support to the counterweight mechanism; and the second common perpendicular line segment is a common perpendicular line segment between a third pivoting shaft and a fourth pivoting shaft, the third pivoting shaft being a pivoting shaft of the connecting rod to the engineering machinery, and the fourth pivoting shaft being a pivoting shaft of the connecting rod to the counterweight mechanism.

[0008] In combination with the first aspect, in a possible implementation manner, the translational support mechanism comprises: a sliding block connected to the counterweight mechanism, the sliding block sliding on a part of the surface of the engineering machinery; wherein a first plumb surface in which the first pivoting shaft of the support to the engineering machinery is located and a second plumb surface in which the sliding block is located are mutually non-coplanar, and the overall center of gravity of the counterweight mechanism is located between the first plumb surface and the second plumb surface.

[0009] In combination with the first aspect, in a possible implementation manner, the translational support mechanism comprises: a pulley rotatably connected to the counterweight mechanism, the pulley rolling on a part of the surface of the engineering machinery; wherein a first plumb surface in which the first pivoting shaft of the support to the engineering machinery is located and a third plumb surface in which the pulley is located are mutually non-coplanar, and the overall center of gravity of the counterweight mechanism is located between the first plumb surface and the third plumb surface.

[0010] In combination with the first aspect, in a possible implementation manner, the telescopic driving mechanism comprises: a telescopic oil cylinder, the telescopic oil cylinder comprising an oil cylinder and an oil rod, the oil cylinder being pivoted to the engineering machinery, and the oil rod being pivoted to the counterweight mechanism, the support or the translational support mechanism.

[0011] With reference to the first aspect, in a possible implementation form of the first aspect, the first rotation angle of the support from the initial position close to the engineering machinery to the vertical state is greater than the second rotation angle of the support from the vertical state to the limit position away from the engineering machinery.

[0012] With reference to the first aspect, in a possible implementation form of the first aspect, the first rotation angle is any value between 30° and 40°, and the second rotation angle is any value between 25° and 35°.

[0013] With reference to the first aspect, in a possible implementation form of the first aspect, the height difference between the first horizontal height of the counterweight mechanism at the initial position close to the engineering machinery and the second horizontal height of the counterweight mechanism at the limit position away from the engineering machinery is any value between 20 mm and 50 mm.

[0014] With reference to the first aspect, in a possible implementation form of the first aspect, the device further comprises a limiting mechanism connected to the engineering machinery, and the limiting mechanism is configured to limit the movement of the counterweight mechanism relative to the engineering machinery within a preset movement range.

[0015] With reference to the first aspect, in a possible implementation form of the first aspect, the counterweight mechanism comprises a plurality of counterweight bodies and a connecting seat configured to connect the plurality of counterweight bodies to form an integral whole.

[0016] With reference to the first aspect, in a possible implementation form of the first aspect, the counterweight weight of the counterweight mechanism accounts for any value between 15% and 30% of the weight of the engineering machinery.

[0017] The second aspect provides an engineering machinery, comprising the gravity center adjusting device.

[0018] Since the second aspect includes all the technical solutions of the first aspect, the technical effects of the first aspect are included, and the technical effects of the second aspect will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 1 shows a structure schematic diagram of a gravity center adjusting device provided by an embodiment of the present application installed on an engineering machinery.

[0020] Figure 2 Fig. 2 shows a structure schematic diagram of a translation support mechanism provided by another embodiment of the present application using a connecting rod.

[0021] Figure 3 Fig. 3 shows a structure schematic diagram of a translation support mechanism provided by another embodiment of the present application using a sliding block.

[0022] Figure 4Fig. 2 shows a schematic view of a translation support mechanism according to another embodiment of the present application.

[0023] Figure 5 Fig. 3 shows a schematic view of a first mounting structure of a translation support mechanism according to another embodiment of the present application.

[0024] Figure 6 Fig. 4 shows a schematic view of a second mounting structure of a translation support mechanism according to another embodiment of the present application.

[0025] Figure 7 Fig. 5 shows a schematic view of a third mounting structure of a translation support mechanism according to another embodiment of the present application.

[0026] Figure 8 Fig. 6 shows a schematic view of a rotation angle of a support according to another embodiment of the present application.

[0027] Figure 9 Fig. 7 shows a schematic view of a limiting mechanism as a limiting block according to another embodiment of the present application.

[0028] Figure 10 Fig. 8 shows a schematic view of a limiting mechanism as a telescopic rod according to another embodiment of the present application.

[0029] Figure 11 Fig. 9 shows a schematic view of a counterweight mechanism including a plurality of counterweights according to another embodiment of the present application. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0031] Center of gravity adjusting device

[0032] Figure 1 Fig. 1 shows a schematic view of a structure of a gravity center adjusting device installed on a construction machine according to an embodiment of the present application. The present application provides a gravity center adjusting device. In an embodiment, as shown in Fig. 1, the gravity center adjusting device includes a support 1, a translation support mechanism 2, a limiting mechanism 3, a counterweight mechanism 4, a control mechanism 5, and a control device 6. Figure 1As shown, the gravity center adjusting device includes a counterweight mechanism 2, a support 3, a translation support mechanism 4 and a telescopic driving mechanism 5. Two ends of the support 3 are respectively pivotally connected with the engineering machine 1 and the counterweight mechanism 2. The translation support mechanism 4 is connected with the counterweight mechanism 2 and the engineering machine 1 respectively, and the translation support mechanism 4 is configured to assist the support 3 to support the counterweight mechanism 2 to move. The telescopic driving mechanism 5 is pivotally connected with the engineering machine 1 at one end, and the other end of the telescopic driving mechanism 5 is connected with the counterweight mechanism 2. The telescopic driving mechanism 5 is configured to drive the counterweight mechanism 2 to move relative to the engineering machine 1 in a telescopic motion. The second pivot axis, at which the support 3 and the counterweight mechanism 2 are pivotally connected with each other, is located on the side of the reference plumb surface of the overall gravity center of the counterweight mechanism 2 away from the engineering machine 1, and the reference plumb surface is parallel to the second pivot axis.

[0033] In use, the counterweight mechanism 2 can rotate or move based on the support 3, and the gravity center of the counterweight mechanism 2 moves in an arc trajectory during the movement of the counterweight mechanism 2, so as to adjust the position of the gravity center of the counterweight mechanism 2 together with the engineering machine 1, that is, to adjust the front-rear moment of the engineering machine 1. The telescopic motion of the telescopic driving mechanism 5 can drive the counterweight mechanism 2 to move towards or away from the engineering machine 1 at any time. The translation support mechanism 4 can provide effective auxiliary support when the counterweight mechanism 2 moves, so that the counterweight mechanism 2 can move more stably. Moreover, since the second pivot axis is located on the side of the plumb surface of the overall gravity center away from the engineering machine 1, the resultant force of the gravity of the counterweight mechanism 2 on the second pivot axis is always directed towards the engineering machine 1, so that the counterweight mechanism 2 can be prevented from overturning away from the engineering machine 1 during the movement. The translation support mechanism 4 can also be arranged on the side of the plumb surface of the overall gravity center close to the engineering machine 1, so as to prevent the counterweight mechanism 2 from overturning towards the engineering machine 1 during the movement.

[0034] The embodiment does not need to use a telescopic beam type structure to drive the counterweight mechanism 2 to move towards or away from the engineering machine 1, so as to avoid various defects caused by using a telescopic beam to control the movement of the counterweight.

[0035] Figure 2 As shown, the translation support mechanism provided by another embodiment of the present application adopts a structure of a connecting rod. In an embodiment, as shown in the figure, Figure 2 The translation support mechanism includes a connecting rod 41, one end of the connecting rod 41 is pivotally connected with the engineering machine 1, and the other end of the connecting rod 41 is pivotally connected with the counterweight mechanism 2. In the embodiment, the connecting rod 41 and the support 3 jointly support the counterweight mechanism 2 to move relative to the engineering machine 1, Figure 2 As shown, the counterweight mechanism 2 is away from the engineering machine 1, the connecting rod 41, the support 3, the counterweight mechanism 2 and the engineering machine 1 jointly constitute a four-bar linkage 41 mechanism, so that the counterweight mechanism 2 can stably move away from or close to the engineering machine 1, and the counterweight mechanism 2 can be prevented from overturning towards the engineering machine 1.

[0036] In one embodiment, the first and second common perpendicular segments are parallel to each other and have equal lengths. The first common perpendicular segment is the common perpendicular segment between the first and second pivot axes. The first pivot axis is the pivot axis between the bracket 3 and the engineering machine 1, and the second pivot axis is the pivot axis between the bracket 3 and the counterweight mechanism 2. The second common perpendicular segment is the common perpendicular segment between the third and fourth pivot axes. The third pivot axis is the pivot axis between the connecting rod 41 and the engineering machine 1, and the fourth pivot axis is the pivot axis between the connecting rod 41 and the counterweight mechanism 2.

[0037] In this embodiment, the connecting rod 41, bracket 3, counterweight mechanism 2, and engineering machine 1 collectively form a parallelogram-shaped four-bar linkage 41. The first, second, third, and fourth pivot axes are projected at four points on the vertical plane of the first pivot axis, forming a parallelogram. In this embodiment, the counterweight mechanism 2 can maintain a constant horizontal pitch angle during movement, thereby making the movement of the counterweight mechanism 2 more stable.

[0038] Figure 3 FIG. 1 is a schematic diagram of a structure of a translation support mechanism using a slider according to another embodiment of the present application. Figure 3 As shown, the translation support mechanism includes a slider 42 connected to the counterweight mechanism 2, which slides over a portion of the surface of the engineering machine 1. The first plumb plane, where the first pivot axis between the bracket 3 and the engineering machine 1 is located, is skewed from the second plumb plane where the slider 42 is located. The overall center of gravity of the counterweight mechanism 2 is located between the first and second plumb planes.

[0039] When this embodiment is in use, based on the position setting of the overall center of gravity, the slider 42 can always fall on a partial surface of the engineering machinery 1 while the counterweight mechanism 2 is supported by the bracket 3 for movement. The slider 42 provides support for the counterweight mechanism 2 during the sliding process, so that the counterweight mechanism 2 will not flip in any direction.

[0040] Figure 4 FIG. 1 is a schematic diagram of a translation support mechanism using pulleys according to another embodiment of the present invention. Figure 4 As shown, the translation support mechanism includes a pulley 43, which is rotatably connected to the counterweight mechanism 2 and rolls on a portion of the surface of the engineering machine 1. The first plumb plane, where the first pivot axis between the bracket 3 and the engineering machine 1 is located, is skewed from the third plumb plane where the pulley 43 is located. The overall center of gravity of the counterweight mechanism 2 is located between the first and third plumb planes.

[0041] In use, the embodiment is based on the position of the overall center of gravity, so that the counterweight mechanism 2 can always fall on the surface of the engineering machine 1 during the movement supported by the support 3. The pulley 43 provides support for the counterweight mechanism 2 during rolling, so that the counterweight mechanism 2 will not overturn.

[0042] Figure 5 Fig. 1 shows a first mounting structure diagram of the translation support mechanism provided by another embodiment of the application. Figure 6 Fig. 2 shows a second mounting structure diagram of the translation support mechanism provided by another embodiment of the application. Figure 7 Fig. 3 shows a third mounting structure diagram of the translation support mechanism provided by another embodiment of the application. In an embodiment, as shown in Figure 5 Figure 6 and Figure 7 The telescopic drive mechanism includes a telescopic oil cylinder, which includes an oil cylinder 51 and an oil rod 52. The oil cylinder 51 is pivoted on the engineering machine 1, and the oil rod 52 is pivoted on the counterweight mechanism 2, the support 3, or the translation support mechanism 4. Figure 5 Fig. 4 shows a structure diagram of the oil rod 52 being pivoted on the counterweight mechanism 2, Figure 6 Fig. 5 shows a structure diagram of the oil rod 52 being pivoted on the support 3, Figure 7 Fig. 6 shows a structure diagram of the oil rod 52 being pivoted on the translation support mechanism 4.

[0043] In the embodiment, the telescopic oil cylinder can be telescoped at any time, thereby moving the counterweight mechanism 2 at any time. During the movement of the counterweight mechanism 2, the counterweight mechanism 2, the support 3, and the translation support mechanism 4 will all move. Therefore, the oil rod 52 can be pivoted on any structure of the counterweight mechanism 2, the support 3, and the translation support mechanism 4, so as to realize linkage with the counterweight mechanism 2, thereby moving the counterweight mechanism 2 relative to the engineering machine 1.

[0044] Figure 8 Fig. 7 shows a turning angle diagram of the support provided by another embodiment of the application. In an embodiment, as shown in Figure 8 The first turning angle b of the support 3 from the initial position close to the engineering machine 1 to the vertical state is greater than the second turning angle a of the support 3 from the vertical state to the limit position away from the engineering machine 1.

[0045] When the support 3 is in the vertical state, the entire gravity of the counterweight mechanism 2 is basically borne by the first pivot bearing. Since the telescopic drive mechanism 5 generally has a poor tensile capacity compared to a compressive capacity, the telescopic drive mechanism 5 will be subjected to a tensile force when the support 3 is between the vertical state and the limit position, and the telescopic drive mechanism 5 will be subjected to a compressive force when the support 3 is between the vertical state and the initial position. Therefore, the first turning angle b is greater than the second turning angle a, which can make the telescopic drive mechanism 5 be subjected to more compressive force, thereby protecting the telescopic drive mechanism 5 to a certain extent.​

[0046] For example, when the telescopic drive mechanism 5 adopts the telescopic cylinder, the rodless cavity area of the telescopic cylinder is larger than the rod cavity area, and the first rotation angle b is larger than the second rotation angle a, so that the telescopic cylinder is subjected to pressure for a longer time than to tension, i.e. the oil pressure when subjected to pressure and the oil pressure when subjected to tension are closer, and the telescopic cylinder is subjected to force more evenly.

[0047] In an embodiment, the first rotation angle b is any value between 30° and 40°, and the second rotation angle a is any value between 25° and 35°, in which range, most of the gravity of the counterweight mechanism 2 is borne by the first pivot bearing, and the telescopic drive mechanism 5 only bears a small part of the pressure or tension, so that the telescopic drive mechanism 5 can be effectively protected.

[0048] In an embodiment, due to the first rotation angle being larger than the second rotation angle, the counterweight mechanism is located at a first horizontal height when located at an initial position close to the engineering machine, and is located at a second horizontal height when located at a limit position away from the engineering machine, and the height difference between the first horizontal height and the second horizontal height is any value between 20mm and 50mm, so that the height difference of the counterweight mechanism at the initial position and the limit position is not too large, and while ensuring that the moving range of the counterweight mechanism is large enough, the telescopic drive mechanism is subjected to pressure more, and the telescopic drive mechanism is protected to a certain extent. When the telescopic drive mechanism adopts the telescopic cylinder, the height difference range makes the oil pressure when the telescopic cylinder is subjected to pressure and the oil pressure when the telescopic cylinder is subjected to tension closer, and the telescopic cylinder is subjected to force more evenly.

[0049] In an embodiment, the gravity center adjusting device further comprises a limiting mechanism, the limiting mechanism being connected to the engineering machine, and the limiting mechanism being configured to limit the movement of the counterweight mechanism within a preset moving range relative to the engineering machine.

[0050] In the embodiment, the limiting mechanism can prevent the counterweight mechanism from moving too much and damaging the telescopic drive mechanism. Specifically, when the counterweight mechanism is located at the farthest distance away from the engineering machine, the limiting mechanism can prevent the telescopic drive mechanism from being fully extended, thereby effectively protecting the telescopic drive mechanism. For example, when the telescopic drive mechanism adopts the telescopic cylinder, the oil rod of the telescopic cylinder is not fully extended, thereby effectively protecting the telescopic cylinder. The limiting mechanism can be a limiting block, a telescopic rod, etc.

[0051] Figure 9 Fig. 4 shows a structure schematic diagram of the limiting mechanism provided by another embodiment of the application, which is a limiting block. Figure 10 Fig. 5 shows a structure schematic diagram of the limiting mechanism provided by another embodiment of the application, which is a telescopic rod. Figure 9As shown, for example, the limiting mechanism is a limiting block 6, the limiting block 6 can be installed at the tail of the engineering machinery 1 and located in the moving range of the counterweight mechanism 2, the counterweight mechanism 2 abuts against the limiting block 6 when moving to a certain angle, thereby achieving the movement limitation of the counterweight mechanism 2, at this time the oil rod of the telescopic oil cylinder is not fully extended. Figure 10 As shown, for example, the limiting mechanism is a telescopic rod 7, the two ends of the telescopic rod 7 can be respectively pivoted with the counterweight mechanism 2 and the engineering machinery 1, the counterweight mechanism 2 drives the telescopic rod 7 to lengthen when moving, the counterweight mechanism 2 cannot move any more when the telescopic rod 7 reaches the longest, at this time the oil rod of the telescopic oil cylinder is not fully extended.

[0052] In an embodiment, the counterweight mechanism includes a plurality of counterweight bodies and a connecting seat, which is configured to connect the plurality of counterweight bodies to form a whole, the plurality of counterweight bodies can increase the overall weight of the counterweight mechanism, and the plurality of counterweight bodies can more flexibly adjust the position of the overall gravity center of the counterweight mechanism.

[0053] Figure 11 As shown, the counterweight mechanism provided by another embodiment of the present application includes a plurality of counterweight bodies. In an embodiment, as shown, Figure 11 As shown, the counterweight mechanism 2 includes an upper counterweight 21, a lower counterweight 22 and a connecting seat 23, the connecting seat 23 connects the upper counterweight 21 and the lower counterweight 22, the first gravity center of the upper counterweight 21, the second gravity center of the lower counterweight 22 and the first pivoting shaft, the three projection points of the three on the vertical plane of the first pivoting shaft enclose a triangle, so that the upper counterweight 21 and the lower counterweight 22 form an approximate L shape, and then a part of the upper counterweight 21 protrudes from the side of the lower counterweight 22. In the state that the counterweight mechanism 2 is in the initial position and is not rotated, the part of the upper counterweight 21 protruding from the side of the lower counterweight 22 can be supported by the support structure provided on the engineering machinery 1. The counterweight mechanism 2 composed of the upper counterweight 21 and the lower counterweight 22 can facilitate the support work of the counterweight mechanism 2 while increasing the overall weight of the counterweight mechanism 2. During the rotation process, the overall gravity center of the counterweight mechanism 2 moves in an arc.

[0054] In an embodiment, the counterweight weight of the counterweight mechanism accounts for any value in the range of 15% to 30% of the weight of the engineering machinery. In this embodiment, the weight of the counterweight mechanism is sufficient to effectively adjust the front and rear moments of the engineering machinery.

[0055] Exemplary working machine

[0056] The application also provides an engineering machine, in one embodiment, the engineering machine comprises the gravity center adjusting device. In use, the engineering machine can control the weight mechanism to move at any time to adjust the position of the weight mechanism and the gravity center of the engineering machine, so as to adjust the front and rear moment of the engineering machine. The telescopic movement of the telescopic driving mechanism can drive the weight mechanism to move close to or away from the engineering machine at any time. The translational support mechanism can provide effective auxiliary support when the weight mechanism moves, so that the weight mechanism can move more stably without overturning. The telescopic beam type structure is not required to drive the weight mechanism to move close to or away from the engineering machine, avoiding various defects caused by using the telescopic beam to control the movement of the weight.

[0057] The basic principles of the application are described above in combination with specific embodiments, but it should be pointed out that the advantages, advantages, effects and the like mentioned in the application are only examples and are not limiting, and these advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the application. In addition, the above specific details are only for the purpose of example and for the purpose of understanding, and are not limited to the application of the above specific details.

[0058] The block diagrams of the devices, apparatuses, equipment, systems involved in the application are only illustrative examples and are not intended to require or imply that the connection, arrangement, configuration shown in the block diagram must be connected, arranged and configured. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged and configured in any way. Words such as "include", "contain", "have" and the like are open-ended words, which mean "include but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0059] It should also be noted that in the devices and equipment of the application, the components can be disassembled and / or reassembled. These disassembly and / or reassembly should be considered as equivalent solutions of the application.

[0060] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the application. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the application. Therefore, the application is not intended to be limited to the aspects shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0061] The above only describes preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A barycentre adjustment device, characterised in that, The device comprises: a counterweight mechanism; a support, which is pivotally connected to the engineering machine and the counterweight mechanism at two ends; a translation support mechanism, which is connected to the counterweight mechanism and the engineering machine respectively, and is configured to assist the support in supporting the counterweight mechanism to move; a telescopic driving mechanism, which is pivotally connected to the engineering machine at one end and is connected to the counterweight mechanism at the other end, and is configured to drive the counterweight mechanism to move relative to the engineering machine in a telescopic motion; wherein a second pivot axis, at which the support and the counterweight mechanism are pivotally connected to each other, is located on a side of a reference plumb plane, in which the overall center of gravity of the counterweight mechanism is located, away from the engineering machine, the reference plumb plane is parallel to the second pivot axis, and the translation support mechanism is arranged on a side of the plumb plane, in which the overall center of gravity is located, close to the engineering machine.

2. The device according to claim 1, wherein the translation support mechanism comprises: a connecting rod, which is pivotally connected to the engineering machine at one end and is pivotally connected to the counterweight mechanism at the other end.

3. The device according to claim 2, wherein a first common perpendicular line segment and a second common perpendicular line segment are parallel to each other and have equal lengths, wherein the first common perpendicular line segment is a common perpendicular line segment between a first pivot axis and a second pivot axis, the first pivot axis being a pivot axis at which the support is pivotally connected to the engineering machine, and the second pivot axis being a pivot axis at which the support is pivotally connected to the counterweight mechanism; and the second common perpendicular line segment is a common perpendicular line segment between a third pivot axis and a fourth pivot axis, the third pivot axis being a pivot axis at which the connecting rod is pivotally connected to the engineering machine, and the fourth pivot axis being a pivot axis at which the connecting rod is pivotally connected to the counterweight mechanism.

4. The device according to claim 1, wherein the translation support mechanism comprises: a sliding block, which is connected to the counterweight mechanism and slides on a part of the surface of the engineering machine; wherein a first plumb plane, in which the first pivot axis of the support and the engineering machine is located, and a second plumb plane, in which the sliding block is located, are mutually non-coplanar, and the overall center of gravity of the counterweight mechanism is located between the first plumb plane and the second plumb plane.

5. The device according to claim 1, wherein the translation support mechanism comprises: a pulley, which is rotatably connected to the counterweight mechanism and rolls on a part of the surface of the engineering machine; wherein a first plumb plane, in which the first pivot axis of the support and the engineering machine is located, and a third plumb plane, in which the pulley is located, are mutually non-coplanar, and the overall center of gravity of the counterweight mechanism is located between the first plumb plane and the third plumb plane.

6. The device according to claim 1, wherein the telescopic driving mechanism comprises: a telescopic oil cylinder, which comprises an oil cylinder and an oil rod, the oil cylinder being pivotally connected to the engineering machine, and the oil rod being pivotally connected to the counterweight mechanism, the support or the translation support mechanism.

7. The device according to claim 1, wherein ​ ​ ​ ​ ​ ​ The first rotation angle of the support from an initial position close to the construction machine to a vertical state is greater than a second rotation angle of the support from the vertical state to a limit position away from the construction machine.

8. The gravity center adjusting device according to claim 7, wherein The first rotation angle is any value between 30° and 40°, and the second rotation angle is any value between 25° and 35°.

9. The gravity center adjusting device according to claim 7, wherein The first horizontal height of the counterweight mechanism at the initial position close to the construction machine and the second horizontal height of the counterweight mechanism at the limit position away from the construction machine have a height difference of any value between 20 mm and 50 mm.

10. The gravity center adjusting device according to any one of claims 1 to 9, further comprising: a limiting mechanism connected to the construction machine, the limiting mechanism being configured to limit movement of the counterweight mechanism relative to the construction machine within a preset movement range.

11. The gravity center adjusting device according to any one of claims 1 to 9, wherein The counterweight mechanism comprises: a plurality of counterweight bodies; and a connecting seat configured to connect the plurality of counterweight bodies to each other to form an integral whole.

12. The gravity center adjusting device according to any one of claims 1 to 9, wherein The counterweight weight of the counterweight mechanism accounts for any value between 15% and 30% of the weight of the construction machine.

13. A construction machine, comprising: the gravity center adjusting device according to any one of claims 1 to 12. ​ ​

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