Gas-liquid controlled counterweight adjusting structure and crane
By using a gas-liquid controlled counterweight adjustment structure, the drive unit drives the flow of gas or liquid in the regulating cylinder, solving the problem that traditional crane counterweight structures cannot dynamically adapt. This achieves a dynamic balance between the crane's stabilizing torque and overturning torque, improving operational efficiency and safety.
Patent Information
- Application Number
- CN202521149433.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-06
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-06-06
AI Technical Summary
Traditional cranes with fixed counterweight structures cannot dynamically adapt to changes in working conditions, resulting in a dynamic imbalance between stabilizing torque and overturning torque. This limits the rated lifting capacity and increases the risk of overturning, making it difficult to meet the efficient and safe operation requirements of modern engineering and emergency rescue.
The counterweight adjustment structure adopts gas-liquid control. The drive unit drives the flow of gas or liquid in the regulating cylinder, monitors the lifting parameters in real time and provides feedback for adjustment, so as to realize the weight change of the counterweight and dynamically optimize the torque balance of the whole machine.
It realizes real-time variable control of the counterweight adjustment structure, improves the operating efficiency and safety of the crane, adapts to different working conditions, and ensures the stability and flexibility of the equipment.
Smart Images
Figure CN223906418U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a crane technical field, concretely relates to a gas -liquid control's counterweight adjustment structure and crane. BACKGROUND
[0002] In the field of building construction, road engineering and emergency rescue, as the key operation equipment, the counterweight adjustment system of the crane is the core guarantee to realize the mechanical balance of the whole machine, directly restricts the equipment operation stability, power output and safety performance boundary. The traditional crane adopts the fixed counterweight structure, and the rigid counterweight seat is statically installed at the rear part of the rotary table, and its design needs to strictly meet the stable torque matching requirement and the limit constraint of the rear axle load of the national mandatory standard. However, this mode has significant technical defects: the counterweight space distribution is rigidly coupled with the gravity center of the whole machine, cannot be dynamically adjusted with the lifting load quality and operation amplitude, leading to the imbalance of stable torque and overturning torque, which not only limits the rated lifting capacity but also increases the overturning risk; with the development of modern engineering to high altitude and large span (such as super high-rise building construction, large bridge installation) and the improvement of the demand for rapid response of emergency rescue, the rigidity and non-adjustability of the traditional counterweight system have become the core bottleneck restricting the operation efficiency and safety of the crane. For example, in super high-rise construction, the crane needs to frequently adjust the operation amplitude and lifting weight, and the fixed counterweight is difficult to dynamically adapt to the load change, leading to the sharp fluctuation of stable torque; in the complex terrain of emergency rescue, the counterweight parameters need to be quickly adjusted to expand the operation range, and the traditional structure is difficult to realize precise control due to the lack of adjustment capacity, and it is difficult to meet the demand of efficient and safe operation in multiple scenes.
[0003] Therefore, the inventor proposes a gas-liquid controlled counterweight adjustment structure and crane to solve the above technical problems. UTILITY MODEL CONTENTS
[0004] One of the purposes of the utility model is to provide a gas-liquid controlled counterweight adjustment structure to solve the problem that the traditional crane adopts the fixed counterweight structure and cannot dynamically adapt to the working condition change, which easily leads to the dynamic imbalance of stable torque and overturning torque; the second purpose is to propose a crane.
[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
[0006] A gas-liquid controlled counterweight adjustment structure and crane, comprising a control console, a support table is fixedly arranged on the control console, a counterweight frame is hinged on the support table, one end of the counterweight frame is connected with a lifting arm, and the other end of the counterweight frame is connected with a counterweight hammer.
[0007] The counterweight plate is fixedly arranged on the side of the control console away from the lifting arm, and the first adjusting cylinder and the second adjusting cylinder are symmetrically arranged on the counterweight plate, and the driving unit is arranged between the first adjusting cylinder and the second adjusting cylinder; the driving unit is used for driving the gas or liquid in the first adjusting cylinder and the second adjusting cylinder to enter the counterweight hammer, or extruding the gas or liquid in the counterweight hammer to the first adjusting cylinder and the second adjusting cylinder.
[0008] According to the above technical scheme, the motor in the driving unit drives the rotating disc to rotate, so that the driving column slides in the annular frame groove and drives the sliding frame to reciprocate; the sliding frame synchronously pulls the sliding plugs of the first adjusting cylinder and the second adjusting cylinder, changes the volume of the gas or liquid in the first adjusting cylinder and the second adjusting cylinder, and forces the gas or liquid to flow into or out of the counterweight hammer. This process is monitored by the control system in real time according to the load parameters and feedback adjustment, so as to ensure the dynamic balance of the stable torque and the overturning torque, thereby adapting to different working conditions, improving the operation efficiency and safety.
[0009] Further, the driving unit comprises a driving member and a sliding member, the driving member is installed on the counterweight plate, the sliding member is slidingly arranged on the counterweight plate, and the driving member is connected with the sliding member and used for driving the sliding member to move.
[0010] Further, the sliding member comprises a sliding frame, an annular block and two sliding rods, and the annular block is provided with an annular frame groove; in the first direction, the two sides of the annular frame groove are fixedly connected with the corresponding sliding rods, and the two sliding rods are fixedly connected with the sliding frame.
[0011] Further, the driving member comprises a motor fixedly arranged at the bottom of the counterweight plate, an output shaft of the motor penetrates through the counterweight plate and is coaxially connected with a rotating disc, an eccentric driving column is connected with the rotating disc, and the driving column extends into the annular frame groove and is used for driving the sliding rods and the sliding frame to move.
[0012] Further, the first adjusting cylinder comprises a first cylinder body and a first sliding plug sealingly and slidingly connected with the first cylinder body, the first sliding plug divides the inside of the first cylinder body into a first gas cavity and a first liquid cavity, a first connecting column is connected with the first sliding plug, and the first connecting column extends out of the first cylinder body and is connected with one side of the sliding frame.
[0013] Further, the counterweight hammer comprises a counterweight box and a sliding plug slidingly connected in the counterweight box, and the sliding plug divides the inside of the counterweight box into a third gas cavity and a third liquid cavity.
[0014] Further, the second adjusting cylinder comprises a second cylinder body and a second sliding plug sealingly connected to the second cylinder body, the second sliding plug divides the inside of the second cylinder body into a second gas cavity and a second liquid cavity, a second connecting column is connected to the second sliding plug, and the second connecting column extends out of the second cylinder body and is connected to the other side of the sliding frame.
[0015] Further, a first gas pipe is connected between the first gas cavity and the third gas cavity, and a second gas pipe is connected between the second gas cavity and the third gas cavity.
[0016] A first liquid pipe is connected between the first liquid cavity and the third liquid cavity, and a second liquid pipe is connected between the second liquid cavity and the third liquid cavity.
[0017] Further, a third gas pipe is connected between the first gas cavity and the second gas cavity, and a fourth gas pipe is connected between the first gas cavity and the third gas cavity; a third liquid pipe is connected between the first liquid cavity and the second liquid cavity, and a fourth liquid pipe is connected between the second liquid cavity and the third liquid cavity.
[0018] In another aspect, the application further provides a crane, comprising a base and a lifting arm, and further comprising the gas-liquid controlled counterweight adjusting structure as described above, a control console is installed on the base, and the lifting arm is connected to the counterweight frame.
[0019] The application has the following beneficial effects:
[0020] The application realizes real-time variable control of the counterweight mass through the cooperation of the gas-liquid double medium, when the crane needs to reduce or reduce the lifting weight when light load or translocation, the driving member drives the sliding frame to move left, the left first sliding plug moves left to compress the first gas cavity gas, the gas is injected into the third gas cavity of the counterweight hammer, and the liquid in the third liquid cavity is simultaneously pushed into the first liquid cavity and the second liquid cavity; the right second sliding plug moves left synchronously to compress the second gas cavity gas, and the gas is injected into the third gas cavity. Through the gas volume expansion and liquid compensation mechanism, the total amount of liquid in the counterweight hammer is reduced, the total amount of gas is increased, and thus the effective weight of the counterweight hammer is reduced; similarly, when the crane needs to be heavy load or increase the lifting weight, the driving member drives the sliding frame to move right, so that the total amount of liquid in the counterweight hammer is increased, the total amount of gas is reduced, and thus the weight of the counterweight hammer is increased, realizing the control of the weight change of the counterweight hammer and dynamically optimizing the moment balance of the whole machine.
[0021] Other advantages, objects, and features of the application will be set forth in part in the following specification taken in conjunction with the accompanying drawings, and in part will become apparent to those skilled in the art from a consideration of the following specification and from the practice of the application as disclosed herein, or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by means of the instrumentalities and combinations particularly pointed out in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 This is a front view schematic diagram of the gas-liquid controlled counterweight adjustment structure and the crane of this utility model;
[0023] Figure 2 This is a schematic diagram of the gas-liquid controlled counterweight adjustment structure and the overall structure of the crane of this utility model.
[0024] Figure 3 This is a partial structure of the gas-liquid controlled counterweight adjustment structure of this utility model (see view). Figure 1 ) Schematic diagram;
[0025] Figure 4 This is a partial structure of the gas-liquid controlled counterweight adjustment structure of this utility model (see view). Figure 2 ) Schematic diagram;
[0026] Figure 5 This is a schematic diagram of the pipe connection in one embodiment of the gas-liquid controlled counterweight adjustment structure of this utility model.
[0027] Figure 6 This is a schematic diagram of the pipeline connection for another embodiment of the gas-liquid controlled counterweight adjustment structure of this utility model.
[0028] The components include: console 1, support platform 11, counterweight frame 12, lifting arm 13, counterweight hammer 2, counterweight box 21, sliding plug 22, third air chamber 23, third liquid chamber 24, counterweight plate 3, first adjusting cylinder 4, first cylinder body 41, first sliding plug 42, first air chamber 43, first liquid chamber 44, first connecting column 45, first air pipe 46, second air pipe 47, first liquid pipe 48, second liquid pipe 49, second adjusting cylinder 5, second cylinder body 51, second sliding plug 52, and second air chamber. 53. Second liquid chamber 54, second connecting column 55, third air pipe 59, a fourth air pipe 56 connecting the first air chamber 43 and the third air chamber 23; a third liquid pipe 57 connecting the first liquid chamber 44 and the second liquid chamber 54, a fourth liquid pipe 58 connecting the second liquid chamber 54 and the third liquid chamber 24, a driving component 6, a rotating disk 61, a driving column 62, a sliding component 7, a sliding frame 71, an annular block 72, a sliding rod 73, and an annular frame groove 74. Detailed Implementation
[0029] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.
[0030] Need to explain, the following examples provided in the illustration only in a schematic way to illustrate the basic concept of the utility model, so the drawing shows only the components related to the utility model is not drawn according to the actual implementation of the number of components, shape and size, its actual implementation of each component type, quantity and proportion can be a random change, and its component layout type may be more complex.
[0031] In one aspect, the embodiment proposes a gas-liquid controlled counterweight adjusting structure, as shown in Figures 1 to 6 , including the console 1, the console 1 is fixedly provided with the support table 11, the support table 11 is hingedly provided with the counterweight frame 12, the left end of the counterweight frame 12 is connected with the lifting arm 13, and the right end of the counterweight frame 12 is connected with the counterweight 2; The side of the console 1 away from the lifting arm 13 (that is, the right side of the console 1 in Figure 1 ) is fixedly provided with the counterweight plate 3, the first adjusting cylinder 4 and the second adjusting cylinder 5 are symmetrically provided on the counterweight plate 3, and the driving unit is arranged between the first adjusting cylinder 4 and the second adjusting cylinder 5; The driving unit is used for driving the gas or liquid in the first adjusting cylinder 4 and the second adjusting cylinder 5 to enter the counterweight 2, or extruding the gas or liquid in the counterweight 2 to the first adjusting cylinder 4 and the second adjusting cylinder 5.
[0032] As a preferred embodiment, as shown in Figure 2 , Figure 3 and Figure 4 , the driving unit includes a driving member 6 and a sliding member 7, the driving member 6 is installed on the counterweight plate 3, the counterweight plate 3 is provided with a support block, the sliding member 7 is slidingly arranged on the counterweight plate 3, the driving member 6 is connected with the sliding member 7, and is used for driving the sliding member 7 to move. The sliding member 7 includes a sliding frame 71 slidingly arranged above the counterweight plate 3, an annular block 72 and two slide rods 73, the two slide rods 73 are slidingly connected to the support block, and the annular block 72 is provided with an annular frame slot 74; As shown in Figure 3 , in the first direction, the two sides of the annular frame slot 74 are fixedly connected with the corresponding two slide rods 73, and the two slide rods 73 are fixedly connected with the sliding frame 71, that is, the sliding frame 71, the annular block 72 and the two slide rods 73 form an integral structure.
[0033] As a preferred embodiment, the driving member 6 comprises a motor (not shown) fixedly arranged at the bottom of the counterweight plate 3, the output shaft of the motor is coaxially connected with a rotating disc 61 penetrating through the counterweight plate 3, the motor is a forward-reverse motor, and the rotating angle of the motor during operation is less than 180 degrees. The rotating disc 61 is eccentrically connected with a driving column 62, and the driving column 62 extends into the annular frame groove 74 for driving the sliding rod 73 and the sliding frame 71 to move. The driving unit drives the rotating disc 61 to rotate through the motor, so that the eccentrically arranged driving column 62 slides in the annular frame groove 74 of the annular block 72, and forces the sliding rod 73 embedded in the annular frame groove 74 to slide horizontally under the guidance and constraint of the support block; the linear motion of the sliding rod 73 drives the sliding frame 71 fixedly connected therewith to move synchronously.
[0034] As a preferred embodiment, as shown in Figure 5 and Figure 6 The first adjusting cylinder 4 comprises a first cylinder body 41 and a first sliding plug 42 sealingly and slidably connected to the first cylinder body 41. The first sliding plug 42 divides the inside of the first cylinder body 41 into a first gas cavity 43 on the left side and a first liquid cavity 44 on the right side. The first sliding plug 42 is connected with a first connecting column 45 extending out of the first cylinder body 41 and connected with the left side of the sliding frame 71. The movement of the sliding plug changes the volume of the first gas cavity 43 and the first liquid cavity 44. When the first sliding plug 42 moves towards the first gas cavity 43, the compressed gas is injected into the counterweight 2 through the gas pipe, and at the same time, the volume of the first liquid cavity 44 is expanded, and the liquid is pumped back through the liquid pipe. Conversely, the reverse movement of the sliding plug releases the gas of the counterweight 2 and pushes the liquid in. This structure converts the linear motion of the driving unit into the dynamic adjustment of the gas-liquid cavity through the mechanical linkage of the sliding plug and the connecting column, and realizes the precise control of the counterweight distribution.
[0035] As a preferred embodiment, the counterweight 2 comprises a counterweight box 21 and a sliding plug 22 slidably connected in the counterweight box 21, and the sliding plug 22 divides the inside of the counterweight box 21 into a third gas cavity 23 and a third liquid cavity 24. The second adjusting cylinder 5 comprises a second cylinder body 51 and a second sliding plug 52 sealingly and slidably connected to the second cylinder body 51. The second sliding plug 52 divides the inside of the second cylinder body 51 into a second gas cavity 53 and a second liquid cavity 54. The second sliding plug 52 is connected with a second connecting column 55 extending out of the second cylinder body 51 and connected with the other side of the sliding frame 71. The first gas cavity 43 and the third gas cavity 23 are connected by a first gas pipe 46, and the second gas cavity 53 and the third gas cavity 23 are connected by a second gas pipe 47. The first liquid cavity 44 and the third liquid cavity 24 are connected by a first liquid pipe 48, and the second liquid cavity 54 and the third liquid cavity 24 are connected by a second liquid pipe 49.
[0036] When the crane needs to reduce or reduce the lifting weight when it is light or when it is transferred, the driving member 6 drives the sliding frame 71 to move to the left. Taking the left movement of the sliding frame 71 as an example: Figure 5As shown, the left first sliding plug 42 moves left to compress the gas in the first gas cavity 43, the gas is injected into the third gas cavity 23 of the counterweight 2, and the liquid in the third liquid cavity 24 is simultaneously pushed into the first liquid cavity 44 and the second liquid cavity 54; the right second sliding plug 52 moves left to compress the gas in the second gas cavity 53, and the gas is injected into the third gas cavity 23. Through the gas volume expansion and liquid compensation mechanism, the total amount of liquid in the counterweight 2 is reduced, and the total amount of gas is increased, so that the effective weight of the counterweight 2 is reduced; similarly, when the crane needs to carry heavy loads or increase the lifting weight, the driving member 6 drives the sliding frame 71 to move right, so that the total amount of liquid in the counterweight 2 is increased, and the total amount of gas is reduced, so that the weight of the counterweight 2 is increased, thereby realizing the control of the weight change of the counterweight 2 and dynamically optimizing the overall torque balance.
[0037] In another embodiment, a third gas pipe 59 is connected between the first gas cavity 43 and the second gas cavity 53, a fourth gas pipe is connected between the first gas cavity 43 and the third gas cavity 23; a third liquid pipe is connected between the first liquid cavity 44 and the second liquid cavity 54, and a fourth liquid pipe is connected between the second liquid cavity 54 and the third liquid cavity 24. If the sliding frame 71 moves right, the first sliding plug 42 compresses the first liquid cavity 44, and the liquid in the first liquid cavity 44 enters the second liquid cavity 54 through the third liquid pipe, and at the same time, the liquid in the second liquid cavity 54 enters the third liquid cavity 24 through the fourth liquid pipe under the action of the second piston. Through the gas volume reduction and liquid increase compensation mechanism, the total amount of liquid in the counterweight 2 is increased, and the total amount of gas is reduced, so that the effective density of the counterweight 2 is increased, thereby achieving the purpose of dynamically optimizing the overall torque balance, ensuring the operation stability and improving the flexibility of the equipment.
[0038] On the other hand, the application also provides a crane, which comprises a base and a lifting arm 13; and further comprises the gas-liquid controlled counterweight adjusting structure as described above, the control console 1 is installed on the base, and the lifting arm 13 is connected with the counterweight frame 12.
[0039] The above embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Any equivalent replacement or transformation of the present application made by those skilled in the art based on the present application is within the protection scope of the present application.
Claims
1. A gas-liquid controlled counterweight adjustment structure, characterized by, The utility model relates to a counterweight device for a crane, which comprises: a console (1) provided with a support table (11) fixedly arranged thereon, a counterweight frame (12) hingedly connected to the support table (11), a hoisting arm (13) connected to one end of the counterweight frame (12), and a counterweight (2) connected to the other end of the counterweight frame (12); a counterweight plate (3) fixedly arranged on the side of the console (1) away from the hoisting arm (13), the counterweight plate (3) being provided with a first adjusting cylinder (4) and a second adjusting cylinder (5) symmetrically arranged thereon, and a drive unit arranged between the first adjusting cylinder (4) and the second adjusting cylinder (5); the drive unit is used to drive the gas or liquid in the first adjusting cylinder (4) and the second adjusting cylinder (5) to enter the counterweight (2), or to extrude the gas or liquid in the counterweight (2) to the first adjusting cylinder (4) and the second adjusting cylinder (5).
2. The gas-liquid controlled counterweight adjustment structure according to claim 1, characterized by: The drive unit comprises a driving member (6) and a sliding member (7), the driving member (6) being mounted on the counterweight plate (3), and the sliding member (7) being slidingly arranged on the counterweight plate (3); the driving member (6) is connected with the sliding member (7) and used to drive the sliding member (7) to move.
3. The gas-liquid controlled counterbalance adjustment structure according to claim 2, characterized by: The sliding member (7) comprises a sliding frame (71), an annular block (72), and two sliding rods (73); the annular block (72) is provided with an annular frame groove (74) formed therein; in a first direction, the two sides of the annular frame groove (74) are fixedly connected with corresponding sliding rods (73), respectively; and the two sliding rods (73) are fixedly connected with the sliding frame (71).
4. The gas-liquid controlled counterweight adjustment structure according to claim 3, characterized by: The driving member (6) comprises a motor fixedly arranged at the bottom of the counterweight plate (3); the output shaft of the motor is coaxially connected with a rotating disc (61) penetrating through the counterweight plate (3); the rotating disc (61) is eccentrically connected with a driving column (62) which extends into the annular frame groove (74) and is used to drive the sliding rods (73) and the sliding frame (71) to move.
5. The gas-liquid controlled counterweight adjustment structure according to claim 4, characterized by: The first adjusting cylinder (4) comprises a first cylinder body (41) and a first sliding plug (42) sealingly and slidingly connected to the first cylinder body (41); the first sliding plug (42) divides the inside of the first cylinder body (41) into a first gas cavity (43) and a first liquid cavity (44); the first sliding plug (42) is connected with a first connecting column (45) which extends out of the first cylinder body (41) and is connected with one side of the sliding frame (71).
6. The gas-liquid controlled counterweight adjustment structure according to claim 5, characterized by: The counterweight (2) comprises a counterweight box (21) and a sliding plug (22) slidingly connected to the counterweight box (21); the sliding plug (22) divides the inside of the counterweight box (21) into a third gas cavity (23) and a third liquid cavity (24).
7. The gas-liquid controlled counterweight adjustment structure according to claim 6, characterized by: The second adjusting cylinder (5) comprises a second cylinder body (51) and a second sliding plug (52) sealingly and slidably connected to the second cylinder body (51), the second sliding plug (52) divides the inside of the second cylinder body (51) into a second air cavity (53) and a second liquid cavity (54), the second sliding plug (52) is connected with a second connecting column (55), and the second connecting column (55) is connected to the other side of the sliding frame (71) and extends out of the second cylinder body (51).
8. The gas-liquid controlled counterweight adjustment structure according to claim 7, characterized by: The first air cavity (43) and the third air cavity (23) are connected with a first air pipe (46), and the second air cavity (53) and the third air cavity (23) are connected with a second air pipe (47). The first liquid cavity (44) and the third liquid cavity (24) are connected with a first liquid pipe (48), and the second liquid cavity (54) and the third liquid cavity (24) are connected with a second liquid pipe (49).
9. The gas-liquid controlled counterbalance adjustment structure according to claim 7, characterized by: The first air cavity (43) and the second air cavity (53) are connected with a third air pipe (59), and the first air cavity (43) and the third air cavity (23) are connected with a fourth air pipe (56); the first liquid cavity (44) and the second liquid cavity (54) are connected with a third liquid pipe (57), and the second liquid cavity (54) and the third liquid cavity (24) are connected with a fourth liquid pipe (58).
10. A crane, characterized in that The crane comprises a base, a lifting arm (13), a gas-liquid controlled counterweight adjusting structure as claimed in any one of claims 1 to 9, and a control console (1) mounted on the base, wherein the lifting arm (13) is connected to the counterweight frame (12).