CN219792289U - Balance weight deflection device and crane - Google Patents
Balance weight deflection device and crane Download PDFInfo
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- CN219792289U CN219792289U CN202321043862.3U CN202321043862U CN219792289U CN 219792289 U CN219792289 U CN 219792289U CN 202321043862 U CN202321043862 U CN 202321043862U CN 219792289 U CN219792289 U CN 219792289U
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- counterweight
- balancing weight
- shoulder pole
- pole beam
- beam mechanism
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- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 238000006073 displacement reaction Methods 0.000 claims abstract description 18
- 230000036544 posture Effects 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 12
- 230000008859 change Effects 0.000 description 8
- 230000005484 gravity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
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Abstract
The utility model discloses a counterweight displacement device and a crane, belongs to the technical field of engineering machinery, and aims to solve the technical problems that in the prior art, the counterweight weight is increased while the anti-overturning moment is increased, the space size is increased, the counterweight displacement mechanism is complex in structure, the cost is high, the use is inconvenient and the efficiency is low. The balancing weight lifting mechanism comprises a balancing weight lifting driving mechanism, a shoulder pole beam mechanism and a fixing rod, wherein the balancing weight lifting driving mechanism is arranged at the tail part of the turntable and used for driving the balancing weight to move in the vertical direction, the shoulder pole beam mechanism is arranged on the balancing weight lifting driving mechanism, the fixing rod can fix different postures of the shoulder pole beam mechanism, and the balancing weight can be hung at different positions on the shoulder pole beam mechanism to realize the front-back movement of the balancing weight position. The utility model has smaller whole vehicle space size and lighter whole vehicle weight under the condition of equal tilting resistance moment, and has high whole vehicle lifting performance and space operation capability and low manufacturing and transportation cost.
Description
Technical Field
The utility model relates to a counterweight displacement device and a crane, and belongs to the technical field of engineering machinery.
Background
The crane is widely applied to hoisting operations of wind power plants, large petrochemical projects, large bridges and other projects, and is increasingly applied to construction of cities, factories and other places, so that the requirements on the performance and space adaptability of the crane are higher and higher. The balance weight is hung at the tail part of a turntable of the crane, is mainly used for balancing the tipping moment generated when the crane is hung by the crane, maintains the stability of the whole crane, and in order to improve the hanging performance of the crane, the weight of the balance weight is required to be increased continuously to increase the anti-tipping moment of the crane, but the space size and the weight of the whole crane are increased, so that the manufacturing and transportation costs are increased continuously, the operation capacity of the crane in a narrow space is limited, and the hanging performance and the space size requirements of the crane cannot be met. The existing swinging type balance weight shifting mechanism can be used for hanging the balance weight after the lifting oil cylinder swings in place, is complex in operation and low in efficiency, and the swinging of the lifting oil cylinder is pushed by the hydraulic oil cylinder, so that the structure is complex, the cost is high, and the reliability is low.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a counterweight displacement device and a crane, wherein the counterweight is hung at different positions of a shoulder pole beam mechanism to change the gravity center position of the counterweight and the turning radius, so that the technical problems that the whole crane weight is increased, the space size is increased and the counterweight displacement mechanism structure is complicated when the whole crane anti-overturning moment is increased are solved, and the purposes of reducing the counterweight weight and the turning radius of the crane under the condition of the same anti-overturning moment are achieved.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
the utility model provides a balancing weight shifting device, which comprises a frame, a turntable arranged on the frame, a balancing weight lifting driving mechanism arranged at the tail part of the turntable and used for driving the balancing weight to move in the vertical direction, a shoulder pole beam mechanism arranged on the balancing weight lifting driving mechanism, and fixing rods capable of fixing different postures of the shoulder pole beam mechanism, wherein the balancing weight can be hung at different positions on the shoulder pole beam mechanism, so that the forward and backward movement of the balancing weight position is realized.
Further, the counterweight lifting driving mechanism is a lifting oil cylinder.
Further, the shoulder pole beam mechanism is hinged to the end part of a cylinder rod of the lifting oil cylinder, and the fixing rod is located above the shoulder pole beam mechanism and fixedly connected to the cylinder rod of the lifting oil cylinder.
Further, the fixed rod is perpendicular to the cylinder rod of the lifting cylinder and symmetrically fixedly connected to the two sides of the fixed rod on the cylinder rod of the lifting cylinder, a first locking hole and a second locking hole are respectively formed in two ends of the fixed rod, a third locking hole and a fourth locking hole are respectively formed in two ends of the shoulder pole beam mechanism, and the first locking hole and the second locking hole are respectively located on arc-shaped tracks of the rotation of the hinge points of the third locking hole and the fourth locking hole around the shoulder pole beam mechanism and the lifting cylinder.
Further, the first locking hole and the third locking hole are connected with the locking position through a first pin shaft, and the second locking hole and the fourth locking hole are connected with the locking position through a second pin shaft.
Further, a plurality of counterweight hanging points are arranged at two ends of the shoulder pole beam mechanism, and counterweight hanging positions corresponding to the counterweight hanging points are arranged on the counterweights.
Furthermore, the frame is provided with positioning blocks for positioning different counterweight hanging positions.
The utility model also provides a crane, which uses the counterweight displacement device.
Compared with the prior art, the utility model has the beneficial effects that:
1. the counterweight position changing device provided by the utility model has the advantages that the counterweight is hung at different positions of the shoulder pole beam mechanism to realize the change of the gravity center position and the change of the turning radius of the counterweight, and the weight of the counterweight can be reduced under the condition of the same anti-overturning moment, so that the turning radius of a crane is reduced while the lifting performance is improved, the crane is suitable for narrow space operation, and the manufacturing and transportation cost is reduced.
2. According to the balancing weight deflection device, different postures of the carrying pole beam mechanism are fixed by adopting the carrying pole beam mechanism and the fixing rod, and the corresponding locking holes on the carrying pole beam mechanism and the fixing rod are connected through the pin shafts to lock the postures of the carrying pole beam, so that the balancing weight deflection device is simple in structure, convenient to operate and high in reliability.
3. The balancing weight shifting device is provided with the positioning blocks for positioning different balancing weight hanging positions on the frame, can quickly and accurately move the balancing weight to the position corresponding to the hanging point in the process of changing the balancing weight hanging positions, and has simple operation and high operation efficiency.
4. The crane provided by the utility model has the advantages of smaller whole vehicle space size and lighter whole vehicle weight under the condition of equal anti-equal tilting moment, strong whole vehicle lifting performance and space operation capability and low manufacturing and transportation cost.
Drawings
FIG. 1 is a schematic view of a counterweight displacement device according to an embodiment of the utility model;
FIG. 2 is a schematic view of a counterweight lift drive mechanism, a fixed bar, and a shoulder pole beam mechanism in accordance with an embodiment of the utility model;
fig. 3 is a schematic view showing the state of the apparatus when the balancing weights are respectively hung on the first hanging point 53 and the second hanging point 54 of the balancing weights according to the embodiment of the present utility model.
FIG. 4 is a schematic view of the arrangement of the positioning block on the carriage in an embodiment of the present utility model;
in the figure:
1. a frame; 2. a turntable; 3. a counterweight lifting driving mechanism; 4. a fixed rod; 5. a shoulder pole beam mechanism; 6. a counterweight; 7. a first pin; 8. a second pin; 11. a first positioning block; 12. a second positioning block 1; 41. a first locking hole; 42. a second locking hole; 51. a third locking hole; 52. a fourth locking hole; 53. a counterweight first hitch point; 54. a counterweight second hitch point; 61. a first position; 62. a second position; three-dimensional coordinate system: x-axis, Y-axis, Z-axis.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "connected" should be construed broadly, unless otherwise explicitly specified and defined, and that the specific meaning of the above terms in the present utility model may be understood by those of ordinary skill in the art in a specific sense.
Example 1
A counterweight position changing device comprises a frame 1, a turntable 2, a counterweight lifting driving mechanism 3, a fixed rod 4, a shoulder pole beam mechanism 5 and a counterweight 6, wherein the change of the gravity center position and the change of the turning radius of the counterweight 6 can be realized by changing the hanging position of the counterweight 6 and the shoulder pole beam mechanism 5, and the maximization of the lifting performance can be realized by using the least counterweight weight.
Referring to fig. 1, a frame 1 is a key component of a crane lower part for supporting an upper crane to perform lifting operation, a turntable 2 is mounted on the frame 1 and is a crane rotation and main body bearing part in a counterweight system, a counterweight lifting driving mechanism 3 is fixed at the tail of the turntable 2 and is used for controlling a counterweight to move up and down, lifting of the counterweight can be realized by adopting an oil cylinder, an air cylinder, a chain structure and the like, in this embodiment, the counterweight lifting driving mechanism 3 adopts a lifting oil cylinder, a fixing rod 4 is fixed on a cylinder rod of the lifting oil cylinder and can move up and down along with the cylinder rod of the lifting oil cylinder in a telescopic manner, the fixing rod 4 is arranged above a shoulder pole beam mechanism 5 and can fix different postures of the shoulder pole beam mechanism 5, the shoulder pole beam mechanism 5 is hinged on the cylinder rod of the lifting oil cylinder, and can rotate around a Y axis (the left side in the crane driving direction) by taking a hinging point as a rotation center on the cylinder rod of the lifting oil cylinder. The balancing weight 6 is hung on the shoulder pole beam mechanism 5, a plurality of balancing weight hanging points are respectively arranged at two ends of the shoulder pole beam mechanism 5, and the change of the gravity center position of the balancing weight 6 can be realized by changing the hanging point position of the balancing weight 6 on the shoulder pole beam mechanism 5, so that the distance between the farthest distance of the balancing weight 6 and the rotation center of the turntable 2 is variable, namely the rotation radius of the balancing weight 6 is variable. The counterweight 6 may be placed in a prescribed position on the frame 1 before being mounted.
Referring to fig. 2, the fixing rod 4 may fix different postures of the shoulder pole beam mechanism 5, two ends of the fixing rod 4 are respectively provided with a first locking hole 41 and a second locking hole 42, a third locking hole 51 and a fourth locking hole 52 are formed on the shoulder pole beam mechanism 5 corresponding to the first locking hole 41 and the second locking hole 42, the first locking hole 41 is located on an arc track of the third locking hole 51 rotating around a hinge point of the shoulder pole beam mechanism 5 and a cylinder rod, the second locking hole 42 is located on an arc track of the fourth locking hole 52 rotating around a hinge point of the shoulder pole beam mechanism 5 and the cylinder rod, and the locking holes on the shoulder pole beam mechanism and the corresponding locking holes on the fixing rod can be fixed through fixing parts such as pins or bolts.
The two ends of the shoulder pole beam mechanism 5 are respectively provided with a plurality of counterweight hanging points, and in this embodiment, two counterweight hanging points symmetrically arranged are shown: a counterweight first hanging point 53 and a counterweight second hanging point 54.
Corresponding to the plurality of counterweight hanging points arranged on the shoulder pole beam mechanism 5, a plurality of hanging parts are arranged on the counterweight 6, and when the counterweight 6 is hung on different hanging points on the shoulder pole beam mechanism 5, the relative positions of the counterweight 6 are different. Referring to fig. 3, when the counterweight 6 is hung at the first hanging point 53 of the counterweight, the second locking hole 42 and the fourth locking hole 52 are fixed by the second pin 8, and the counterweight 6 is located at the first position 61; when the balancing weight 6 is hung at the balancing weight second hanging point 54, the first locking hole 41 and the third locking hole 51 are fixed through the first pin shaft 7, and the balancing weight 6 is located at the second position 62, so that the balancing weight 6 at the tail of the turntable 2 realizes the change of the gravity center position, and the turning radius of the turntable 2 changes along with the change of the position of the balancing weight 6.
Example 2
Referring to fig. 1 and 4, the difference between the present embodiment and embodiment 1 is that a positioning block is disposed on the frame 1, the position of the positioning block corresponds to the position of the disposed hanging point, and the positioning block is mainly used to quickly and accurately move the counterweight 6 to the position corresponding to the hanging point during the process of changing the hanging position of the counterweight 6, in this embodiment, the positioning block 11 and the positioning block 12 are disposed corresponding to the first hanging point 53 and the second hanging point 54 of the counterweight in embodiment 1.
The two side surfaces of the turntable 2 are respectively provided with a lifting oil cylinder, and only the counterweight displacement structure of one side surface is described and shown in the embodiment 1 and the embodiment 2, and the structure of the other side surface is the same as and symmetrical to the side surface, and is not repeated here.
Referring to fig. 1-4, taking the displacement of the balancing weight 2 from the first position 61 to the second position 62 as an example, the balancing weight displacement steps are as follows: the rotary table 2 is operated to rotate until the balance weight 6 falls right above the frame 1, the lifting cylinder rod is operated to extend, the balance weight 6 falls on the positioning block 12 of the frame 1, the pin shaft 8 is pulled out, the pin shaft 7 is inserted, the balance weight 6 is shifted to the positioning block 11 of the frame 1, the second hanging point 54 of the balance weight in the shoulder pole beam mechanism 5 is connected with the balance weight 6, and the lifting cylinder rod is operated to retract to a proper position, so that the shifting is completed.
Example 3
A crane using one of the counterweight displacement devices of embodiment 1 or embodiment 2 described above.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (8)
1. The balancing weight deflection device is characterized by comprising a frame, a turntable arranged on the frame, a balancing weight lifting driving mechanism arranged at the tail of the turntable and used for driving the balancing weight to move in the vertical direction, a shoulder pole beam mechanism arranged on the balancing weight lifting driving mechanism and fixing rods capable of fixing different postures of the shoulder pole beam mechanism, and balancing weights capable of being hung at different positions on the shoulder pole beam mechanism to realize the forward and backward movement of the balancing weight positions.
2. The counterweight displacement device according to claim 1, wherein the counterweight lifting drive mechanism is a lift cylinder.
3. The counterweight displacement device according to claim 2, wherein the shoulder pole beam mechanism is hinged to a cylinder rod end of the lift cylinder, and the fixing rod is located above the shoulder pole beam mechanism and fixedly connected to the cylinder rod of the lift cylinder.
4. The counterweight displacement device according to claim 3, wherein the fixing rod is perpendicular to the cylinder rod of the lifting cylinder, two sides of the fixing rod are symmetrically and fixedly connected to the cylinder rod of the lifting cylinder, two ends of the fixing rod are respectively provided with a first locking hole and a second locking hole, two ends of the shoulder pole beam mechanism are respectively provided with a third locking hole and a fourth locking hole, and the first locking hole and the second locking hole are respectively positioned on arc tracks of the rotation of the third locking hole and the fourth locking hole around a hinge point of the shoulder pole beam mechanism and the lifting cylinder.
5. The counterweight displacement device according to claim 4, wherein the first and third locking holes are connected to the locking position by a first pin, and the second and fourth locking holes are connected to the locking position by a second pin.
6. The counterweight displacement device according to any one of claims 1 to 5, wherein a plurality of counterweight hanging points are provided at both ends of the shoulder pole beam mechanism, and counterweight hanging points corresponding to the plurality of counterweight hanging points are provided on the counterweight.
7. The counterweight displacement device according to claim 6, wherein the frame is provided with positioning blocks for positioning different counterweight hooking positions.
8. Crane, characterized in that it uses a counterweight displacement device according to any of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321043862.3U CN219792289U (en) | 2023-05-04 | 2023-05-04 | Balance weight deflection device and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321043862.3U CN219792289U (en) | 2023-05-04 | 2023-05-04 | Balance weight deflection device and crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219792289U true CN219792289U (en) | 2023-10-03 |
Family
ID=88177355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321043862.3U Active CN219792289U (en) | 2023-05-04 | 2023-05-04 | Balance weight deflection device and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219792289U (en) |
-
2023
- 2023-05-04 CN CN202321043862.3U patent/CN219792289U/en active Active
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