CN117902495A - Counterweight adjusting mechanism for crane - Google Patents
Counterweight adjusting mechanism for crane Download PDFInfo
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- CN117902495A CN117902495A CN202410306610.8A CN202410306610A CN117902495A CN 117902495 A CN117902495 A CN 117902495A CN 202410306610 A CN202410306610 A CN 202410306610A CN 117902495 A CN117902495 A CN 117902495A
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- 230000006978 adaptation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 21
- 230000008569 process Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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Abstract
A counterweight adjusting mechanism for a crane comprises a movable car body, wherein a rotating bridge is rotatably arranged at the upper end of the movable car body through a rotating part, a suspension arm and a fixed counterweight structure are rotatably arranged on the rotating bridge, and a counterweight adjusting structure is arranged between the rotating part and the tail part of the movable car body; the counterweight adjusting structure comprises a chute arranged on the movable vehicle body, a fixed plate is slidably arranged in the chute, a rotating shaft is rotated on the fixed plate, a shaft sleeve is connected with the rotating shaft in a key manner, a first telescopic rod is fixedly arranged on the shaft sleeve, and a placing table is arranged at the output end of the first telescopic rod; the stability of the crane can be improved, and the position and the arm of force of the counterweight can be adjusted in real time according to the actual working state and the load condition of the crane through the design of the counterweight adjusting structure; the counterweight adjusting mechanism has a larger adjusting range, and the adaptation of the crane in different terrains and workplaces can be effectively enhanced by arranging the counterweight adjusting mechanisms at two different positions to adapt to various working angles.
Description
Technical Field
The invention relates to the technical field of lifting, in particular to a counterweight adjusting mechanism for a crane.
Background
The automobile crane is used as important engineering mechanical equipment and is widely applied to various scenes such as buildings, road construction, rescue and the like. The counterweight adjusting mechanism has a crucial effect on ensuring the stability, the lifting efficiency and the operation safety of the crane. Along with the development of technology and the continuous expansion of application scenes, the requirements on the counterweight adjusting mechanism of the automobile crane are also increasing.
The counterweight is an important part of the automobile crane, mainly plays roles of increasing stabilizing moment and improving lifting capacity, the conventional automobile crane counterweight adjusting mechanism generally adopts a fixed assembly mode, the counterweight is fixedly arranged on the turntable, and the installation position is generally the rearmost position under the rear axle load meeting the national regulation requirement. The fixed counterweight, while simple in structure, cannot accommodate changes in different operating scenarios and load demands, resulting in a crane that may not maintain optimal stability in certain situations. And the mode of adopting fixed assembly to be matched with manual adjustment is relatively flexible, but the operation is complicated when the different objects with large operation weight difference are operated, the efficiency is low, and the use is inconvenient.
In addition, since the fixed weights are mounted on the turntable, if the fixed weights are too large, a large load is easily caused to the rotating part 2 and the upper limit of the weight of the driving crane is greatly limited, and the driving crane cannot be suitable for various situations.
There is a need for a counterweight adjustment mechanism for a crane to address this problem.
Disclosure of Invention
In view of the above, the present invention aims to overcome the drawbacks of the prior art, and to provide a counterweight adjusting mechanism for a crane, which effectively solves the above problems.
The invention solves the technical scheme that the device comprises a mobile vehicle body, wherein a rotating bridge is rotatably arranged at the upper end of the mobile vehicle body through a rotating part, a suspension arm, a winding device, a driving device and a fixed counterweight structure are rotatably arranged on the rotating bridge, a plurality of stable supporting pieces are also arranged on the mobile vehicle body around the rotating part, and a counterweight adjusting structure is arranged between the rotating part and the vehicle tail part of the mobile vehicle body;
The counterweight adjusting structure comprises a sliding groove arranged on a movable car body, a fixed plate is slidably arranged in the sliding groove, a rotating shaft is arranged on the fixed plate in a rotating mode, a shaft sleeve is connected to the rotating shaft in a key mode, a first telescopic rod is fixedly arranged on the shaft sleeve, a placing table is arranged at the output end of the first telescopic rod and used for placing and adjusting a counterweight block, a vertical second telescopic rod is further arranged at the output end of the first telescopic rod, a limiting groove which is the same as the rotating bridge in direction is further formed in the lower end of the rotating bridge, a clamping mechanism is further arranged at the upper end of the second telescopic rod, and the upper end of the second telescopic rod is fixedly connected with the rotating bridge through the clamping mechanism.
Further, the lower extreme of moving car body in the spout still be equipped with the control groove, the bearing is installed to the tip that the lower extreme of axis of rotation stretched into the control groove, the bearing passes through mounting bracket at control groove sliding connection, the lower extreme of mounting bracket still is equipped with drive axis of rotation pivoted driving motor.
Further, first telescopic link include one-level telescopic link, second grade telescopic link and tertiary telescopic link, one-level telescopic link sliding connection is in the second grade telescopic link, second grade telescopic link sliding connection is in tertiary telescopic link, the connecting block is installed to the upper end of one-level telescopic link, place the platform and install the upper end at the connecting block, still be equipped with on second grade telescopic link and the tertiary telescopic link with the connecting block position corresponding groove of stepping down, still be equipped with the pneumatic cylinder of drive one-level telescopic link in second grade telescopic link and tertiary telescopic link in the tertiary telescopic link.
Further, screens mechanism including setting up the cavity in the second telescopic link upper end, be equipped with a plurality of through mouths with external intercommunication all around of cavity, every through mouthful department rotates through the connecting axle and installs the eccentric wheel, the spring is installed to one side that the connecting axle was kept away from to the eccentric wheel, the center department of terminal surface installs the fixed knot under the cavity, the tip and the fixed knot of spring are connected, the upper end of cavity still is equipped with driving motor, install the rotor in driving motor's the pivot, be equipped with the plectrum of laminating eccentric wheel on the side of rotor.
Furthermore, the limiting groove is also internally provided with a clamping groove with the same direction as the limiting groove, and the height of the clamping groove is the same as the thickness of the eccentric wheel.
Further, the surface of the eccentric wheel is provided with a plurality of balls which are in sliding connection with the surface of the rotating bridge or the inner side surface of the clamping groove.
Further, the stable support piece include to rotate the third telescopic link of installing on the removal automobile body, the supporting legs is installed to the tip of third telescopic link, still is equipped with a counter weight between the locomotive of rotating part and removal automobile body and adjusts the structure.
Furthermore, the two sides of the chute are also provided with hidden grooves with the same direction as the chute, and the two sides of the fixed plate are provided with fixed edges which are slidably arranged in the hidden grooves.
Further, the davit rotate and install on the rotation crane span structure, still rotate on the rotation crane span structure and install the hydraulic pump, the upper end of hydraulic pump is articulated with the mid-side of davit, fixed counter weight structure sets up at the davit for the opposite side of hydraulic pump, fixed counter weight structure is provided with a plurality of fixed balancing weights including setting up the rack on rotating the crane span structure on the rack, the mounting groove is gone up to fixed balancing weight, be equipped with the locating lever that sets up on the mounting bracket, fixed balancing weight passes through the sliding connection of mounting groove and locating lever and installs on the rack.
Further, the lower end of the rotating bridge frame is provided with a first position sensor, and the side surface of the first telescopic rod, which is close to the stable supporting piece, is also provided with a second position sensor.
Further, the upper end of one-level telescopic link still be equipped with logical groove, logical groove slidable mounting has the slide, places platform and second telescopic link and all installs on the slide, leads to the inslot and still is equipped with vertical hydraulic stem, but the upper end and the slide contact connection of hydraulic stem, the upper end of leading to the groove still is equipped with the stopper that is used for restricting the slide range of reciprocating.
The beneficial effects of the invention are as follows:
1. the stability of the crane can be improved, the position and the arm of force of the counterweight can be adjusted in real time according to the actual working state and the load condition of the crane by the design of the counterweight adjusting structure, so that the stability of the crane is maintained, and the accident risk can be effectively reduced;
2. the applicability of the crane can be enhanced, the counterweight adjusting mechanism has a larger adjusting range, the counterweight can be positioned at a proper position in the front-rear direction through the expansion and rotation of the first telescopic rod and the second telescopic rod, and is close to the rotating part or fixed with the counterweight structure so as to adapt to different working requirements and load conditions, and the adaptability of the crane in different terrains and workplaces can be effectively enhanced through arranging the counterweight adjusting mechanisms at two different positions so as to adapt to various working angles while being limited by the rotating angles;
3. The working efficiency is improved, an automatic control and adjustment mode can be realized through the cooperation of each hydraulic cylinder, the telescopic rod and the driving motor with the counterweight adjusting mechanism, the labor intensity of operators can be reduced, the working efficiency is improved, the accuracy and the reliability of counterweight adjustment can be ensured, and errors and faults caused by human factors are reduced;
4. through a plurality of limiters that set up, can improve the bearing capacity of hoist, in addition, through setting up position sensor, prevent that counter weight adjustment mechanism from bumping etc. with stable support piece in the rotation in-process, further improved security and automation.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged view of a of fig. 1 according to the present invention.
Fig. 3 is a top view of the present invention.
Fig. 4 is a cross-sectional view in the direction B-B of fig. 3 in accordance with the present invention.
Fig. 5 is an enlarged view of C of fig. 4 in accordance with the present invention.
Fig. 6 is an enlarged view of D of fig. 5 according to the present invention.
Fig. 7 is a side view of the third mount 10 of the present invention.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method or apparatus that includes the element. Various embodiments are described herein in a progressive manner, each embodiment focusing on differences from other embodiments, and identical and similar parts between the various embodiments are sufficient to be seen with each other. The method, product and the like disclosed in the examples are relatively simple to describe because they correspond to the method parts disclosed in the examples, and the relevant points are only referred to the description of the method parts.
The terms "first," "second," and the like herein are used merely to distinguish one element from another element and do not require or imply any actual relationship or order between the elements. Indeed the first element could also be termed a second element and vice versa. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method or apparatus that includes the element. Various embodiments are described herein in a progressive manner, each embodiment focusing on differences from other embodiments, and identical and similar parts between the various embodiments are sufficient to be seen with each other. The method, product and the like disclosed in the examples are relatively simple to describe because they correspond to the method parts disclosed in the examples, and the relevant points are only referred to the description of the method parts.
The terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein refer to an orientation or positional relationship based on that shown in the drawings, merely for ease of description herein and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus are not to be construed as limiting the invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanically or electrically coupled, may be in communication with each other within two elements, may be directly coupled, or may be indirectly coupled through an intermediary, as would be apparent to one of ordinary skill in the art.
The following describes the embodiments of the present invention in further detail with reference to the drawings.
Examples:
As shown in fig. 1 to 7, the invention comprises a mobile car body 1, wherein a rotating bridge 3 is rotatably arranged at the upper end of the mobile car body 1 through a rotating part 2, a suspension arm 4, a winding device 5, a driving device 6 and a fixed counterweight structure 7 are rotatably arranged on the rotating bridge 3, a plurality of stable supporting pieces 8 are arranged on the mobile car body 1 around the rotating part 2, and a counterweight adjusting structure 9 is arranged between the rotating part 2 and the car tail of the mobile car body 1;
The counterweight adjusting structure 9 comprises a chute 10 arranged on the movable car body 1, the direction of the chute 10 is the same as the direction of the movable car body 1, a fixed plate 11 is arranged in the chute 10 in a sliding manner, a rotating shaft 12 is arranged on the fixed plate 11 in a rotating manner, a shaft sleeve 13 is connected to the rotating shaft 12 in a key manner, a first telescopic rod 14 is fixedly arranged on the shaft sleeve 13, a placing table 15 is arranged at the output end of the first telescopic rod 14, the placing table 15 for placing an adjusting counterweight is arranged at a proper position in the front-rear direction through adjusting the telescopic action of the first telescopic rod 14, the position of the placing table 15 for adjusting the counterweight can be close to a rotating part 2 or a position for fixing the counterweight structure 7, so that the applicability of car hoisting is improved, a vertical second telescopic rod 16 is further arranged at the output end of the first telescopic rod 14, a limit groove 17 which is the same as the direction of the rotating bridge 3 is further arranged at the lower end of the rotating bridge 3, the width of the limit groove 17 is corresponding to the position of the second telescopic rod 16, the width of the limit groove 17 is set with the width of the output end of the second telescopic rod 16, the upper end 16 is set through adjusting the telescopic rod 16, the clamping mechanism is further arranged at the upper end of the second telescopic rod 16, the telescopic rod 16 is further arranged at the position of the second telescopic rod 16, the telescopic mechanism is further arranged at the position of the rotating bridge 3, the rotating bridge body is connected with the rotating mechanism is connected with the rotating bridge body 1 through the rotating mechanism, and the telescopic mechanism is further arranged at one side of the rotating mechanism, and the rotating bridge 3, and the position of the counterweight adjusting mechanism is connected with the rotating mechanism is capable of the rotating and can be connected with the rotating bridge 3 through the telescopic mechanism, and the telescopic mechanism.
It should be noted that, in order to control the rotation of the rotation shaft 12 and improve the stability of the rotation shaft 12, the moving vehicle body 1 is further provided with a control groove 18 at the lower end of the chute 10, the end of the lower end of the rotation shaft 12 extending into the control groove 18 is provided with a bearing, the bearing is slidably connected to the control groove 18 through a mounting frame 19, and the lower end of the mounting frame 19 is further provided with a driving motor for driving the rotation shaft 12 to rotate.
Specifically, first telescopic link 14 include one-level telescopic link 141, second grade telescopic link 142 and tertiary telescopic link 143, one-level telescopic link 141 sliding connection is in second grade telescopic link 142, second grade telescopic link 142 sliding connection is in tertiary telescopic link 143, connecting block 20 is installed to the upper end of one-level telescopic link 141, place the platform 15 and install the upper end at connecting block 20, still be equipped with the groove 21 of stepping down that corresponds with connecting block 20 position on second grade telescopic link 142 and the tertiary telescopic link 143, still be equipped with the pneumatic cylinder that drive one-level telescopic link 141 removed in second grade telescopic link 142 and tertiary telescopic link 143 in the tertiary telescopic link 143 for still can shrink back in second grade telescopic link 142 and the tertiary telescopic link 143 under the restriction of placing the platform 15 when one-level telescopic link 141, so place the platform 15 and can reach the position that is closer to rotation portion 2, with this increases the device suitability.
Specifically, in order to make the rotation of the rotating bridge 3 can make first telescopic link 14 and place the platform 15 and remove together, and in order to improve stability and bearing capacity that this removed, screens mechanism including setting up the cavity 22 in second telescopic link 16 upper end, be equipped with a plurality of through-holes 23 with external intercommunication around cavity 22, every through-hole 23 department is rotated through the connecting axle and is installed eccentric wheel 24, eccentric wheel 24 can be the cam, the one side that eccentric wheel 24 kept away from the connecting axle is installed spring 25, spring 25 installs in the side of eccentric wheel 24, fixed knot 26 is installed to the center department of cavity 22 lower extreme face, fixed knot 26 can be a straight axle, the tip and the fixed knot 26 of spring 25 are connected, the pull ring of spring 25 can cup joint on the straight axle, the upper end of cavity 22 still is equipped with driving motor 27, install the rotation wheel 28 in the pivot of driving motor 27, be equipped with the plectrum 29 of laminating eccentric wheel 24 on the side of rotation wheel 28, when driving motor 27 drives rotation wheel 28, plectrum 29 on the rotation wheel 28, thereby make the eccentric wheel 24 of balance weight 24 rotate to stretch to the eccentric wheel 24 and stretch out the bridge to the side of the eccentric wheel 9 through the opening of the bridge, thereby stability is improved.
It can be expanded that, spacing inslot 17 still be equipped with the draw-in groove the same with spacing groove 17 direction, the draw-in groove highly is the same with the thickness of eccentric wheel 24, can further improve the stability of second telescopic link 16 and rotating bridge 3 through putting the eccentric card in the draw-in groove.
Further, the surface of the eccentric wheel 24 is provided with a plurality of balls which are slidably connected with the surface of the rotating bridge 3 or the inner side surface of the clamping groove.
Specifically, the stabilizing support 8 includes a third telescopic rod 31 rotatably mounted on the moving vehicle body 1, a supporting leg 32 is mounted at an end of the third telescopic rod 31, a height of the supporting leg 32 is adjustable, and a counterweight adjusting structure 9 is further disposed between the rotating portion 2 and the vehicle head of the moving vehicle body 1.
In order to enhance the sliding stability of the fixing plate 11 in the chute 10, the two sides of the chute 10 are further provided with the hidden grooves 33 having the same direction as the chute 10, and the two sides of the fixing plate 11 are provided with the fixing edges slidably mounted in the hidden grooves 33.
Specifically, the boom 4 rotate and install on the rotating bridge 3, still rotate on the rotating bridge 3 and install hydraulic pump 34, the upper end of hydraulic pump 34 is articulated with the mid-side of boom 4, fixed counter weight structure 7 sets up at the opposite side of boom 4 for hydraulic pump 34, fixed counter weight structure 7 is including setting up the rack 35 on rotating bridge 3, be provided with a plurality of fixed counter weights 36 on the rack 35, the mounting groove on the fixed counter weight 36, be equipped with the locating lever 37 of setting on the mounting bracket 19, fixed counter weight 36 passes through the sliding connection of mounting groove and locating lever 37 and installs on rack 35.
In addition, the lower end of the rotating bridge 3 is provided with a first position sensor 38, the side surface of the first telescopic rod 14, which is close to the stable supporting piece 8, is also provided with a second position sensor 39, when the rotating bridge 3 rotates to a first telescopic limit position, that is, when the second position sensor 39 senses that the rotating bridge 3 approaches to the stable supporting piece 8, the driving motor 27 can be controlled to reversely rotate by the control system of the moving bridge 1, so that the eccentric wheel 24 returns to the cavity 22 under the action of the spring 25, then the second telescopic rod 16 can be controlled to shrink to separate the placing table 15 from the rotating bridge 3, when the first position sensor 38 does not sense the first telescopic rod 14, the balance weight adjusting structure 9 at the place can be controlled to shrink to rotate, the overall stability of the moving bridge 1 is increased, when the working range of the rotating bridge 3 exceeds the rotating range of the first telescopic rod 14, the balance weight adjusting mechanism can be controlled to be positioned in the middle of the rotating range by sensing the rotating range of the rotating bridge 3 by the first position sensor 38, and certain stability can be improved.
Optionally, in order to fully apply the weight of the counterweight adjusting mechanism on the rotating bridge 3, the upper end of the primary telescopic rod 141 is further provided with a through groove 40, the through groove 40 is slidably provided with a sliding plate 41, the placing table 15 and the second telescopic rod 16 are both installed on the sliding plate 41, a vertical hydraulic rod 42 is further arranged in the through groove 40, the upper end of the hydraulic rod 42 is in contact connection with the sliding plate 41, the upper end of the through groove 40 is further provided with a limiting block for limiting the up-down movement range of the sliding plate 41, and after the clamping mechanism is fed into the limiting block through the hydraulic rod 42, the second telescopic rod 16 can fully bear the weight of the placing table 15 on the rotating bridge 3 through the clamping mechanism.
When the invention is used, the movable vehicle body 1 is opened to a proper position, then the third telescopic rod 31 is unfolded, the supporting leg 32 on the third telescopic rod 31 is lowered to provide enough supporting force for the side direction of the movable vehicle body 1, then the direction of the rotary bridge 3 can be selectively adjusted, the direction of the suspension arm 4 on the rotary bridge 3 is the correct working direction, the close counterweight adjusting mechanism is connected with the rotary bridge 3, the counterweight adjusting structure 9 is positioned at the same position as the rotary bridge 3, and the counterweight adjusting structure 9 is positioned in the following mode, so that the stability of the device is improved.
The beneficial effects of the invention are as follows:
1. the stability of the crane can be improved, the position and the arm of force of the counterweight can be adjusted in real time according to the actual working state and the load condition of the crane by the design of the counterweight adjusting structure, so that the stability of the crane is maintained, and the accident risk can be effectively reduced;
2. the applicability of the crane can be enhanced, the counterweight adjusting mechanism has a larger adjusting range, the counterweight can be positioned at a proper position in the front-rear direction through the expansion and rotation of the first telescopic rod and the second telescopic rod, and is close to the rotating part or fixed with the counterweight structure so as to adapt to different working requirements and load conditions, and the adaptability of the crane in different terrains and workplaces can be effectively enhanced through arranging the counterweight adjusting mechanisms at two different positions so as to adapt to various working angles while being limited by the rotating angles;
3. The working efficiency is improved, an automatic control and adjustment mode can be realized through the cooperation of each hydraulic cylinder, the telescopic rod and the driving motor with the counterweight adjusting mechanism, the labor intensity of operators can be reduced, the working efficiency is improved, the accuracy and the reliability of counterweight adjustment can be ensured, and errors and faults caused by human factors are reduced;
4. through a plurality of limiters that set up, can improve the bearing capacity of hoist, in addition, through setting up position sensor, prevent that counter weight adjustment mechanism from bumping etc. with stable support piece in the rotation in-process, further improved security and automation.
The foregoing detailed description/examples are specific embodiments of the application and are intended to illustrate the inventive concept, but are not to be construed as limiting the application in any way. In addition to the embodiments described herein, those skilled in the art will be able to adopt other obvious solutions based on the disclosure of the claims and specification, including any obvious alterations and modifications to the embodiments described herein, all within the scope of the present application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. The counterweight adjusting mechanism for the crane comprises a movable car body (1), wherein a rotating bridge frame (3) is rotatably arranged at the upper end of the movable car body (1) through a rotating part (2), a suspension arm (4), a hoisting device (5), a driving device (6) and a fixed counterweight structure (7) are rotatably arranged on the rotating bridge frame (3), and the counterweight adjusting mechanism is characterized in that a plurality of stable supporting pieces (8) are further arranged on the periphery of the rotating part (2) on the movable car body (1), and a counterweight adjusting structure (9) is arranged between the rotating part (2) and the car tail of the movable car body (1);
The counterweight adjusting structure (9) comprises a sliding groove (10) arranged on a movable trolley body (1), a fixed plate (11) is arranged in the sliding groove (10), a rotating shaft (12) is arranged on the fixed plate (11) in a sliding mode, a shaft sleeve (13) is connected to the rotating shaft (12) in a key mode, a first telescopic rod (14) is fixedly arranged on the shaft sleeve (13), a placing table (15) is arranged at the output end of the first telescopic rod (14), the placing table (15) is used for placing and adjusting a counterweight, a vertical second telescopic rod (16) is further arranged at the output end of the first telescopic rod (14), a limiting groove (17) which is the same with the rotating bridge (3) in direction is further arranged at the lower end of the rotating bridge (3), a clamping mechanism is further arranged at the upper end of the second telescopic rod (16), and the upper end of the second telescopic rod (16) is fixedly connected with the rotating bridge (3) through the clamping mechanism.
2. The counterweight adjusting mechanism for a crane according to claim 1, wherein the lower end of the chute (10) on the moving vehicle body (1) is further provided with a control groove (18), the lower end of the rotating shaft (12) extends into the end part of the control groove (18) and is provided with a bearing, the bearing is slidably connected with the control groove (18) through a mounting frame (19), and the lower end of the mounting frame (19) is further provided with a driving motor for driving the rotating shaft (12) to rotate.
3. The counterweight adjusting mechanism for a crane according to claim 1, wherein the first telescopic rod (14) comprises a first-stage telescopic rod (141), a second-stage telescopic rod (142) and a third-stage telescopic rod (143), the first-stage telescopic rod (141) is slidably connected in the second-stage telescopic rod (142), the second-stage telescopic rod (142) is slidably connected in the third-stage telescopic rod (143), the connecting block (20) is mounted at the upper end of the first-stage telescopic rod (141), the placing table (15) is mounted at the upper end of the connecting block (20), the second-stage telescopic rod (142) and the third-stage telescopic rod (143) are further provided with yielding grooves (21) corresponding to the positions of the connecting block (20), and the third-stage telescopic rod (143) is further internally provided with a hydraulic cylinder for driving the first-stage telescopic rod (141) to move in the second-stage telescopic rod (142) and the third-stage telescopic rod (143).
4. A counterweight adjusting mechanism for a crane according to any one of claims 1-3, characterized in that the clamping mechanism comprises a cavity (22) arranged at the upper end of the second telescopic rod (16), a plurality of through holes (23) communicated with the outside are formed in the periphery of the cavity (22), an eccentric wheel (24) is rotatably arranged at each through hole (23) through a connecting shaft, a spring (25) is arranged at one side, far away from the connecting shaft, of the eccentric wheel (24), a fixing buckle (26) is arranged at the center of the lower end surface of the cavity (22), the end part of the spring (25) is connected with the fixing buckle (26), a driving motor (27) is further arranged at the upper end of the cavity (22), a rotating wheel (28) is arranged on a rotating shaft of the driving motor (27), and a shifting block (29) attached to the eccentric wheel (24) is arranged on the side surface of the rotating wheel (28).
5. The counterweight adjusting mechanism for a crane according to claim 4, wherein the limiting groove (17) is further provided with a clamping groove in the same direction as the limiting groove (17), and the height of the clamping groove is the same as the thickness of the eccentric wheel (24).
6. A counterweight adjustment mechanism for a crane according to claim 1, characterized in that the stabilizing support (8) comprises a third telescopic rod (31) rotatably mounted on the mobile body (1), the end of the third telescopic rod (31) being provided with a support foot (32), and a counterweight adjustment structure (9) being further provided between the rotating part (2) and the head of the mobile body (1).
7. The counterweight adjusting mechanism for a crane according to claim 1, wherein hidden grooves (33) with the same direction as the sliding grooves (10) are further arranged on two sides of the sliding grooves (10), and fixed edges which are slidably arranged in the hidden grooves (33) are arranged on two sides of the fixed plate (11).
8. The counterweight adjusting mechanism for a crane according to claim 1, characterized in that the boom (4) is rotatably mounted on the rotating bridge (3), the rotating bridge (3) is rotatably provided with the hydraulic pump (34), the upper end of the hydraulic pump (34) is hinged with the middle side of the boom (4), the fixed counterweight structure (7) is arranged on the other side of the boom (4) opposite to the hydraulic pump (34), the fixed counterweight structure (7) comprises a mounting frame (35) arranged on the rotating bridge (3), a plurality of fixed counterweights (36) are arranged on the mounting frame (35), a mounting groove is formed in the fixed counterweights (36), a positioning rod (37) is arranged on the mounting frame (19), and the fixed counterweights (36) are mounted on the mounting frame (35) through sliding connection of the mounting groove and the positioning rod (37).
9. A counterweight adjustment mechanism for a crane according to claim 1, characterized in that the lower end of the rotating bridge (3) is provided with a first position sensor (38), and the side of the first telescopic link (14) near the stabilizing support (8) is further provided with a second position sensor (39).
10. A counterweight adjusting mechanism for a crane according to claim 3, characterized in that the upper end of the primary telescopic rod (141) is further provided with a through groove (40), the through groove (40) is slidably provided with a slide plate (41), the placement table (15) and the second telescopic rod (16) are both arranged on the slide plate (41), a vertical hydraulic rod (42) is further arranged in the through groove (40), the upper end of the hydraulic rod (42) is in contact connection with the slide plate (41), and the upper end of the through groove (40) is further provided with a limiting block for limiting the up-down movement range of the slide plate (41).
Priority Applications (1)
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| JP2007223787A (en) * | 2006-02-27 | 2007-09-06 | Tadano Ltd | Counterweight device of mobile crane |
| JP2019182569A (en) * | 2018-04-04 | 2019-10-24 | コベルコ建機株式会社 | Hook device and mounting method of counterweight |
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| CN117902495B (en) | 2024-06-07 |
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