Counterweight system with multi-stage displacement and mechanical equipment
By designing a counterweight system with multi-stage displacement, using multiple sets of slip support components and slip mechanisms, the multi-stage displacement of the counterweight components relative to the turntable is solved, and the performance and stability of mechanical equipment are improved.
Patent Information
- Application Number
- CN202421658507.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-12
AI Technical Summary
When the existing stacked slip displacement counterweight system increases lifting capacity, due to the transportation size and counterweight length, it is difficult to achieve a longer displacement distance, which affects the lifting performance and stable performance of construction machinery.
A counterweight system with multi-stage displacement is designed. Through N groups of slip support components, slip mechanisms, counterweight components and counterweight frames, multi-stage displacement of the counterweight components relative to the turntable is realized, increasing the displacement distance and reducing dependence on the displacement space.
It effectively increases the displacement distance between the counterweight assembly and the turntable, provides a larger anti-tilt torque, improves the overall performance of the mechanical equipment, and has a simple and compact structure.
Smart Images
Figure CN222907405U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of counterweight of mechanical equipment, in particular to a counterweight system with multi-stage displacement and a mechanical equipment. Background Art
[0002] Engineering machinery is widely used in the operations under working conditions such as industrial and mining enterprises, construction sites, port terminals, oil fields, railways, warehouses, and freight yards. With the increasingly wide application of engineering machinery, the requirements for the performance of the whole engineering machinery are getting higher and higher. For example, the requirements for the lifting performance and stability performance of truck cranes are getting higher and higher.
[0003] At present, when increasing the lifting capacity of engineering machinery under the same working conditions, the stability of engineering machinery can be ensured by increasing the counterweight. In the early stage, the way to increase the counterweight was to fix the increased counterweight at the rear side of the turntable. In this way, only the turntable can be adjusted to adjust the position of the counterweight, and the rotation of the turntable affects the lifting performance and stability performance of the engineering machinery, thus restricting the improvement of the lifting performance and stability performance of the engineering machinery. And when the maximum counterweight is increased, only by moving the whole vehicle can the position of the counterweight be adjusted, which is not convenient to adjust the center of gravity of the whole vehicle.
[0004] Such as Figure 1 and Figure 2 shown, in the existing stacked sliding displacement counterweight system, the counterweight 102 is arranged behind the turntable 101, and displacement is carried out through the counterweight frame 103 and the sliding frame 104. The counterweight frame 103 is fixedly connected with the turntable 101, the sliding frame 104 is fixedly connected with the bottom counterweight 1021, and the counterweight frame 103 and the sliding frame 104 are moved through steel rails and rollers to realize load-carrying displacement, and the displacement distance is positively correlated with the length of the steel rails.
[0005] However, for the existing stacked sliding displacement counterweight system, the limitation of transportation dimensions needs to be considered. The counterweight frame, the sliding frame and the bottom counterweight are transported after assembly. The width of the bottom counterweight and the length of the counterweight frame should be less than the transportation requirements, and the length of the counterweight frame is limited, which in turn affects the steel rails and the displacement distance. Therefore, it is difficult to achieve a longer displacement distance. Summary of the Utility Model
[0006] In view of this, the utility model provides a counterweight system with multi-stage displacement and a mechanical equipment, which can realize multi-stage displacement of the counterweight assembly in the direction of changing the distance from its rotation center line relative to the turntable under the limited structural bearing capacity and displacement space, effectively increase the displacement distance of the counterweight assembly relative to the rotation center of the turntable, have a lower dependence on the displacement space, and can provide a greater anti-overturning moment.
[0007] To achieve the above object:
[0008] In a first aspect, the present application provides a counterweight system with multi-stage displacement, including N sets of sliding support components, N sets of sliding mechanisms, a counterweight component, and a counterweight frame; wherein, the counterweight frame is used for fixedly connecting to the turntable of a mechanical device, and the Nth set of sliding support components is slidably connected to the counterweight frame in a direction away from or close to the rotation center of the turntable; the first set of sliding support components is fixedly connected to the counterweight component, the second set of sliding support components is slidably connected to the first set of sliding support components in a direction away from or close to the rotation center of the turntable, and the first set of sliding mechanisms is connected between the first set of sliding support components and the second set of sliding support components to drive the second set of sliding support components to move relative to the first set of sliding support components; the nth set of sliding support components is slidably connected to the (n - 1)th set of sliding support components in a direction away from or close to the rotation center of the turntable, and the (n - 1)th set of sliding mechanisms is connected between the (n - 1)th set of sliding support components and the nth set of sliding support components to drive the nth set of sliding support components to move relative to the (n - 1)th set of sliding support components; the Nth set of sliding mechanisms is connected between the Nth set of sliding support components and the counterweight frame to drive the Nth set of sliding support components to move relative to the counterweight frame; wherein, N is a positive integer greater than or equal to 2, and n is a positive integer greater than 2 and less than or equal to N.
[0009] In an embodiment, the sliding mechanism includes a first sliding structure, a second sliding structure, and a push-pull driving member; wherein, the first sliding structure is arranged inside the mth set of sliding support components, the second sliding structure is arranged outside the (m + 1)th set of sliding support components, and the first sliding structure and the second sliding structure are slidably connected to each other; the push-pull driving member (23) is connected between the mth set of sliding support components and the (m + 1)th set of sliding support components to drive the second sliding structure to slide relative to the first sliding structure; the first sliding structure in the Nth set of sliding mechanisms is arranged inside the Nth set of sliding support components, and the second sliding structure is arranged outside the counterweight frame; wherein, m is a positive integer greater than or equal to 1 and less than N.
[0010] In an embodiment, the first sliding structure and the second sliding structure are a mutually matching linear chute and a linear slide rail, and the push-pull driving member is any one of an oil cylinder, a cylinder, and an electric cylinder.
[0011] In an embodiment, the first set of sliding support components includes two sets of first frame structures arranged oppositely, and the first frame structure includes a plurality of side plates that are sequentially connected and perpendicularly connected to the inner bottom surface of the counterweight component.
[0012] In an embodiment, a top plate is provided at the top of the first frame structure, a counterweight mounting portion is provided on the top plate, and the outside of the counterweight mounting portion is fixedly connected to the side portion of the counterweight component.
[0013] In an embodiment, a reinforcing rib structure is provided at intervals between the bottom of the first set of sliding support components and the inner bottom surface of the counterweight component.
[0014] In one embodiment, the second to the Nth sliding support assemblies are all of a second frame structure, and the second frame structure includes a plurality of side plates connected in sequence; the second frame structures of the second sliding support assembly are respectively embedded in the inner sides of two groups of first frame structures.
[0015] In one embodiment, the second frame structures of the pth sliding support assembly are respectively embedded in the inner sides of the second frame structures of the (p - 1)th sliding support assembly; where p is a positive integer greater than or equal to 3 and less than or equal to N.
[0016] In one embodiment, turntable mounting parts are symmetrically arranged on one side of the counterweight frame close to the turntable.
[0017] In a second aspect, the present application further provides a mechanical device configured with the counterweight system having multiple - level displacement as described above.
[0018] The counterweight system having multiple - level displacement and the mechanical device provided by the present utility model are configured with a multi - level sliding displacement structure behind the counterweight assembly and the turntable. Under the limited structural bearing capacity and displacement space, it can achieve multi - level displacement of the counterweight assembly in the direction of changing the distance from its rotation center line relative to the turntable, effectively increasing the displacement distance of the counterweight assembly, being less dependent on the displacement space, being able to provide a greater anti - tipping moment, thereby improving the overall performance of the mechanical device, and having a simple and compact structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.
[0020] Figure 1 Schematically shows the state of the stacked sliding displacement counterweight system in the prior art before sliding.
[0021] Figure 2 Schematically shows the state of the stacked sliding displacement counterweight system in the prior art after sliding.
[0022] Figure 3 and Figure 4 Schematically shows the state of the counterweight system having multiple - level displacement in the embodiment of the present utility model before displacement.
[0023] Figure 5 and Figure 6 Schematically shows the state of the counterweight system having multiple - level displacement in the embodiment of the present utility model after the first - level displacement.
[0024] Figure 7 and Figure 8 schematically shows the state after the secondary displacement of the counterweight system with multiple displacements in the embodiment of the present invention. Specific embodiments
[0025] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.
[0026] In the description of the present invention, unless otherwise clearly defined and limited, terms such as "arranged", "provided with", "installed", "connected", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.
[0027] The orientation or positional relationship indicated by terms such as "upper", "inner bottom surface", "outer side", "inner side", "side part", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of description and simplification of the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.
[0028] Terms such as "first", "second", "Nth", "nth", "(n - 1)th", "mth", "(m + 1)th", "pth", "(p - 1)th", etc. are only used to distinguish elements with similar attributes, rather than indicating or implying relative importance or a specific order.
[0029] The term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion. In addition to including the listed elements, it may also include other elements not specifically listed.
[0030] Such as Figures 3 to 8As shown in the figure, the counterweight system with multi-level displacement according to the embodiment of the present application includes N groups of sliding support components, N groups of sliding mechanisms 20, a counterweight component 30, and a counterweight frame 40; wherein, the counterweight frame 40 is used for fixedly connecting to the turntable 101 of the mechanical equipment, the Nth group of sliding support components are slidably connected to the counterweight frame 40 along the direction away from or close to the rotation center of the turntable 101, the first group of sliding support components 100 are fixedly connected to the counterweight component 30, the second group of sliding support components 200 are slidably connected to the first group of sliding support components 100 along the direction away from or close to the rotation center of the turntable 101, and the first group of sliding mechanisms 20 are connected between the first group of sliding support components 100 and the second group of sliding support components 200 to drive the second group of sliding support components 200 to move relative to the first group of support components 100 to change the distance between the counterweight component 30 and the rotation center of the turntable 101; the nth group of sliding support components are slidably connected to the (n - 1)th group of sliding support components along the direction away from or close to the rotation center of the turntable 101, and the (n - 1)th group of sliding mechanisms are connected between the (n - 1)th group of sliding support components and the nth group of sliding support components to drive the nth group of sliding support components to move relative to the (n - 1)th group of support components to change the distance between the counterweight component 30 and the rotation center line of the turntable 101; the Nth group of sliding mechanisms are connected between the Nth group of sliding support components and the counterweight frame 40 to drive the Nth group of sliding support components to move relative to the counterweight frame 40 to change the distance between the counterweight component 30 and the rotation center of the turntable 101; wherein, N is a positive integer greater than or equal to 2, and n is a positive integer greater than 2 and less than or equal to N.
[0031] The counterweight system with multi-level displacement provided by the embodiment of the present application is configured with a multi-level sliding displacement mechanism behind the counterweight component 30 and the turntable 101. Under the action of the first group of sliding mechanisms 20, the first group of sliding support components 100 drive the bottom counterweight in the counterweight component 30 to move back and forth, reaching a state of the first-level front position and the second-level rear position, and can achieve the same displacement distance and its load capacity as the prior art. Similarly, under the driving action of the second group of sliding mechanisms 20, the second group of sliding support components 200 drive the bottom counterweight in the counterweight component 30 and the second group of sliding support components 200 to move back and forth for displacement, reaching a state of the second-level rear position. Under the limited structural bearing capacity and displacement space, the counterweight component 30 can be displaced in multiple levels relative to the turntable 101 in the direction of changing the distance between the counterweight component 30 and the rotation center of the turntable 101, and can achieve more displacement distances than the prior art, effectively increasing the displacement distance of the counterweight component, having a lower dependence on the displacement space, being able to provide a greater anti-overturning moment, and thus improving the overall performance of the mechanical equipment, such as a crane, and the structure is simple and compact.
[0032] In one embodiment, the sliding mechanism 20 includes a first sliding structure 21, a second sliding structure 22, and a push-pull driving member 23. Among them, the first sliding structure 21 is disposed inside the m-th group of sliding support assemblies 10, the second sliding structure 22 is disposed outside the (m + 1)-th group of sliding support assemblies 10, and the first sliding structure 21 and the second sliding structure 22 are slidably connected to each other. The push-pull driving member 23 is connected between the m-th group of sliding support assemblies 10 and the (m + 1)-th group of sliding support assemblies 10 to drive the second sliding structure 22 to slide relative to the first sliding structure 21. The first sliding structure 21 in the N-th group of sliding mechanisms 20 is disposed inside the N-th group of sliding support assemblies 10, and the second sliding structure 22 is disposed outside the counterweight frame 40. Among them, m is a positive integer greater than or equal to 1 and less than N. In one embodiment, the first sliding structure 21 and the second sliding structure 22 are a mutually matching linear chute and a linear slide rail, and the push-pull driving member 23 is any one of an oil cylinder, a pneumatic cylinder, and an electric cylinder. The linear slide rail can output motion in various forms such as rollers, lead screws, groove rails, steel rails, and wire ropes to output the displacement motion of the counterweight system. Specifically, the sliding mechanism 20 with the above layout structure can achieve a compact connection with the sliding support assembly, minimize the occupied space as much as possible, and the simple linear movement driving method is easy to operate and control, and can ensure the stability and reliability of the sliding process.
[0033] In one embodiment, the first group of sliding support assemblies 100 includes two sets of first frame structures 11 arranged oppositely. The first frame structure 11 includes a plurality of side plates 12 that are connected in sequence and perpendicularly connected to the inner bottom surface 301 of the counterweight assembly 30. Fixing the first group of sliding support assemblies 100 in the form of the above frame structure on the inner bottom surface of the bottom counterweight of the counterweight assembly 30 can effectively utilize the space between the counterweight blocks stacked on both sides of the bottom counterweight, improve the structural compactness and stability and reliability of the counterweight system, and the sliding support assembly of the frame structure has a simple structure, is easy to process, manufacture and install, and has a stable and reliable structure. In one embodiment, a top plate 13 is provided on the top of the first frame structure 11, and a counterweight mounting portion 14 is provided on the top plate 13. The outside of the counterweight mounting portion 14 is fixedly connected to the side portion of the counterweight assembly 30. Specifically, by providing the top plate 13 and the counterweight mounting portion 14, the counterweight assembly 30 can be stably and reliably connected to the multi-stage displacement mechanism, thereby greatly ensuring the stability and reliability of the counterweight system during the multi-stage displacement process.
[0034] In one embodiment, a reinforcing rib structure 15 is provided at an interval between the bottom of the first group of sliding support assemblies 100 and the inner bottom surface 31 of the counterweight assembly 30. By further adding multiple groups of reinforcing rib structures 15, the structural strength of the connection between the first group of sliding support assemblies 100 can be further increased to ensure the stability and reliability of the counterweight system during the multi-stage displacement process.
[0035] In one embodiment, the second to Nth slip support assemblies 200 are all second frame structures 16. The second frame structure 16 includes a plurality of side plates connected in sequence. The second frames 16 of the second slip support assembly are respectively embedded in the inner sides of two sets of first frame structures 11. In one embodiment, the second frame structures 16 of the pth slip support assembly 10 are respectively embedded in the inner sides of the second frame structures 16 of the (p - 1)th slip support assembly 10; where p is a positive integer greater than or equal to 3 and less than or equal to N. Specifically, each slip support assembly adopts a frame structure and an interconnected nested structure, with a simple and convenient assembly process, which can greatly improve the strength and stability reliability of the connection structure between the counterweight assembly 30 and the counterweight frame 40, so that the multi-stage slip displacement process of the counterweight assembly 30 is stable and reliable, and the frame structure is convenient for stably and reliably arranging the slip mechanism 20.
[0036] In one embodiment, on one side of the counterweight frame 40 close to the turntable 101, turntable mounting parts 41 are symmetrically provided. Through the symmetrically arranged turntable mounting parts 41, it is convenient for the counterweight frame 40 to be stably and reliably connected to the turntable 101, which is beneficial to stably and reliably changing the distance between the counterweight assembly 30 and the rotation center of the turntable 101.
[0037] Specifically, in the embodiments of the present application, the Nth slip support assembly 10 can, through shape optimization, use structures such as I-beams, round tubes, and square tubes to further improve the bending resistance, and combine more groups of slip support assemblies and the slip mechanism 20 to achieve multi-stage displacement under the condition of meeting the transportation conditions, and use less counterweight to achieve a larger load capacity. For example, closing the upper part of the Nth slip support assembly to form a circular or square tube and nesting multiple tubes, similar to the form of a telescopic arm, can better reduce the self-weight and maximize the bending resistance.
[0038] Based on the same inventive concept as the foregoing embodiments, the embodiments of the present application further provide a mechanical device configured with a counterweight system having multi-stage displacement as described in the foregoing embodiments.
[0039] According to the above embodiments, it can be seen that the counterweight system and the mechanical device with multi-stage displacement involved in the present utility model are configured with a multi-stage sliding displacement structure behind the counterweight assembly and the turntable. Under the limited structural bearing capacity and displacement space, the counterweight assembly can be displaced in multiple stages relative to the turntable in the direction of moving away from or approaching the rotation center of the turntable, effectively increasing the displacement distance of the counterweight assembly, being less dependent on the displacement space, being able to provide a greater anti-tipping moment, thereby improving the overall performance of the mechanical device, and having a simple and compact structure.
[0040] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the appended claims.
Claims
1. A counterweight system with multi-stage displacement, characterized in that: It comprises N groups of sliding support assemblies, N groups of sliding mechanisms (20), a counterweight assembly (30) and a counterweight frame (40); wherein: The counterweight frame (40) is used to be fixedly connected to a turntable (101) of a mechanical device, and the Nth group of sliding support components is slidably connected to the counterweight frame (40) in a direction away from or close to the rotation center of the turntable (101); The first group of sliding support assemblies (100) is fixedly connected to the counterweight assembly (30), the second group of sliding support assemblies (200) is slidably connected to the first group of sliding support assemblies (100) in a direction away from or close to the rotation center of the turntable (101), and the first group of sliding mechanisms (20) are connected between the first group of sliding support assemblies (100) and the second group of sliding support assemblies (200) to drive the second group of sliding support assemblies (200) to move relative to the first group of sliding support assemblies (100); The sliding support components of the nth group are slidably connected to the sliding support components of the n-1th group in a direction away from or close to the rotation center of the turntable (101), and the sliding mechanism (20) of the n-1th group is connected between the sliding support components of the n-1th group and the sliding support components of the nth group to drive the sliding support components of the nth group to move relative to the sliding support components of the n-1th group; The Nth group of sliding mechanisms (20) are connected between the Nth group of sliding support assemblies and the counterweight frame (40) to drive the Nth group of sliding support assemblies to move relative to the counterweight frame (40); Wherein, N is a positive integer greater than or equal to 2, and n is a positive integer greater than 2 and less than or equal to N.
2. The counterweight system with multi-stage displacement according to claim 1, characterized in that: The sliding mechanism (20) comprises a first sliding structure (21), a second sliding structure (22) and a push-pull driving member (23); wherein: The first sliding structure (21) is arranged on the inner side of the mth group of sliding support components, and the second sliding structure (22) is arranged on the outer side of the m+1th group of sliding support components, and the first sliding structure (21) and the second sliding structure (22) are slidably connected to each other; The push-pull driving member (23) is connected between the mth group of sliding support assemblies and the m+1th group of sliding support assemblies to drive the second sliding structure (22) to slide relative to the first sliding structure (21); The first sliding structure (21) in the Nth group of sliding mechanisms (20) is arranged on the inner side of the Nth group of sliding support components, and the second sliding structure (22) is arranged on the outer side of the counterweight frame (40); Here, m is a positive integer greater than or equal to 1 and less than N.
3. The counterweight system with multi-stage displacement as claimed in claim 2, characterized in that: The first sliding structure (21) and the second sliding structure (22) are linear slide grooves and linear slide rails that match each other, and the push-pull driving member (23) is any one of an oil cylinder, an air cylinder and an electric cylinder.
4. The counterweight system with multi-stage displacement according to any one of claims 1 to 3, characterized in that: The first group of sliding support assemblies (100) comprises two groups of first frame structures (11) arranged opposite to each other, wherein the first frame structures (11) comprise a plurality of side panels (12) which are sequentially connected and vertically connected to the inner bottom surface (301) of the counterweight assembly (30).
5. The counterweight system with multi-stage displacement as claimed in claim 4, characterized in that: A top plate (13) is provided on the top of the first frame structure (11), a counterweight mounting portion (14) is provided on the top plate (13), and the outer side of the counterweight mounting portion (14) is fixedly connected to the side of the counterweight assembly (30).
6. The counterweight system with multi-stage displacement as claimed in claim 4, characterized in that: A reinforcing rib structure (15) is provided between the bottom of the first group of sliding support assemblies (100) and the inner bottom surface (301) of the counterweight assembly (30).
7. The counterweight system with multi-stage displacement as claimed in claim 4, characterized in that: The sliding support assemblies of the second group (200) to the Nth group are all second frame structures (16), and the second frame structures (16) include a plurality of side panels connected in sequence; the second frame structures (16) of the second group of sliding support assemblies (200) are respectively and correspondingly embedded in the inner sides of the two groups of the first frame structures (11).
8. The counterweight system with multi-stage displacement according to claim 7, characterized in that: The second frame structures (16) of the sliding support assemblies of the pth group are respectively embedded in the inner sides of the second frame structures (16) of the sliding support assemblies of the p-1th group; wherein p is a positive integer greater than or equal to 3 and less than or equal to N.
9. The counterweight system with multi-stage displacement according to any one of claims 1 to 3, characterized in that: A turntable mounting portion (41) is symmetrically provided on one side of the counterweight frame (40) close to the turntable (101).
10. A mechanical device, characterized in that: A counterweight system with multi-stage displacement as claimed in any one of claims 1 to 9 is provided.