CN111453612A - Crane grab bucket and working construction method - Google Patents
Crane grab bucket and working construction method Download PDFInfo
- Publication number
- CN111453612A CN111453612A CN202010300562.3A CN202010300562A CN111453612A CN 111453612 A CN111453612 A CN 111453612A CN 202010300562 A CN202010300562 A CN 202010300562A CN 111453612 A CN111453612 A CN 111453612A
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- bucket
- bucket body
- cavity
- transmission
- sludge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
- B66C3/02—Bucket grabs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
- B66C3/14—Grabs opened or closed by driving motors thereon
- B66C3/18—Grabs opened or closed by driving motors thereon by electric motors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention discloses a crane grab bucket which comprises a hoisting beam, wherein the tail end of the hoisting beam is connected with a hoisting suspension rope, the lower end of the suspension rope is connected with a sludge grab bucket in a suspension manner, and the sludge grab bucket can grab and release sludge; the in-process that left side fill chamber and right side fill chamber were filled completely by support left part and support right part respectively, and the silt of filling in left side fill chamber and right side fill intracavity is extruded completely by support left part and support right part to realize the process of silt grab bucket release silt, thereby avoid remaining in left side fill chamber and right side fill intracavity because of the viscidity of silt.
Description
Technical Field
The invention belongs to the field of cranes.
Background
Because silt, grit etc. have certain viscidity, especially the silt that the water content is lower, the easy adhesion of ordinary hoist grab bucket is internal at the fill when the thick silt of release, can not realize whole releases, causes the reduction of single jack-up volume of transporting to reduce the efficiency that silt was transported.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a crane grab bucket capable of completely emptying a bucket cavity and a working method.
The technical scheme is as follows: in order to achieve the purpose, the crane grab bucket comprises a hoisting beam, wherein the tail end of the hoisting beam is connected with a hoisting suspension rope, the lower end of the suspension rope is connected with a sludge grab bucket in a suspension manner, and the sludge grab bucket can grab and release sludge.
Further, the sludge grab bucket comprises a bucket body bracket, and a left bucket body and a right bucket body are symmetrically arranged on the left and right sides of the lower side of the bucket body bracket; the left bucket body and the right bucket body can be closed and opened mutually.
Further, the bucket body bracket comprises a bracket left part and a bracket right part which are symmetrical left and right; the inner parts of the left bucket body and the right bucket body are respectively a left bucket cavity and a right bucket cavity;
when the left bucket body and the right bucket body are in a mutually folded state, the left bucket cavity and the right bucket cavity are mutually communicated, and the left bucket cavity and the right bucket cavity are combined to form a closed sludge accommodating cavity;
when the left bucket body and the right bucket body are in a mutually opened state, the left bucket cavity and the right bucket cavity are separated from each other, and the left bucket cavity and the right bucket cavity are filled by the left part of the support and the right part of the support respectively.
Further, the bucket body support is of a fan-shaped ring structure with a central angle larger than 180 degrees, and an opening of the fan-shaped ring of the bucket body support faces downwards; the left bucket body and the right bucket body are both of fan-shaped ring body structures with central angles equal to 90 degrees, and the circle center of the fan-shaped ring body of the bucket body support, the circle center of the fan-shaped ring body of the left bucket body and the circle center of the fan-shaped ring body of the right bucket body are all overlapped;
the left bucket cavity in the left bucket body is a fan-shaped annular channel which is communicated along the clockwise direction and has a central angle equal to 90 degrees, and the right bucket cavity in the right bucket body is a fan-shaped annular channel which is communicated along the anticlockwise direction and has a central angle equal to 90 degrees; the anticlockwise end part of the left part of the bracket is movably inserted into the clockwise end in the left hopper cavity; the clockwise end of the right part of the bracket is movably inserted into the counterclockwise end in the right hopper cavity; the outer wall surface of the left part of the bracket is in sliding fit with the inner wall surface of the left bucket cavity; the outer wall surface of the right part of the bracket is in sliding fit with the inner wall surface of the right hopper cavity; the left bucket body and the right bucket body rotate along the axis of the fan-shaped ring body under the constraint of the arc outer walls of the left part and the right part of the support respectively.
Further, the central angle of the fan-shaped ring body structure of the bucket body support is smaller than 240 degrees on the basis of being larger than 180 degrees.
Further, the arc-shaped wall body of the left bucket body, which is far away from the axis of the left bucket body, is a left outer arc wall, and the arc-shaped wall body of the left bucket body, which is close to the axis of the left bucket body, is a left inner arc wall; the arc-shaped wall body of the right bucket body, which is far away from the axis of the right bucket body, is a right outer arc wall, and the arc-shaped wall body of the right bucket body, which is close to the axis of the right bucket body, is a right inner arc wall; a plurality of first transmission tooth bodies are distributed on one side surface of the left inner arc wall, which is far away from the left hopper cavity, in an equidistant array manner along the self arc direction; a plurality of second transmission tooth bodies are distributed on one side surface of the right inner arc wall, which is far away from the right hopper cavity, in an equidistant array manner along the self arc direction; the gear transmission mechanism further comprises a first gear shaft and a second gear shaft, wherein the first gear shaft is in transmission meshing with the first transmission gear bodies, and the second gear shaft is in transmission meshing with the second transmission gear bodies; the rotation of the first gear shaft drives the left bucket body to rotate along the axis of the left bucket body under meshing transmission; the rotation of the second gear shaft drives the right bucket body to rotate along the axis of the right bucket body under the meshing transmission.
Furthermore, two ends of the first gear shaft are fixedly connected with a first rotating shaft coaxially, two ends of the second gear shaft are fixedly connected with a second rotating shaft coaxially, and the first rotating shaft and the second rotating shaft are rotatably mounted on the first bearing block and the second bearing block through bearings respectively; the first bearing seat and the second bearing seat are fixedly connected to a bearing seat support together, and the bearing seat support is fixed on the bucket body bracket; the bucket body support is characterized by further comprising a reinforcing structure arm, wherein the two ends of the reinforcing structure arm are fixedly connected with the bearing seat support and the bucket body support.
Furthermore, a vertically through sliding channel is arranged in the middle of the bucket body support, the bucket body support further comprises a plate body which vertically penetrates through the sliding channel in a sliding mode, the top end of the plate body is fixedly connected with a rope connector, and the rope connector is fixedly connected with the lower end of the suspension rope;
the lower end of the plate body is provided with a downwardly extending transmission strip, the lower end of the transmission strip is connected with a tip part with a downward tip end, and the transmission strip is positioned between the first gear shaft and the second gear shaft; a left transmission tooth array is arranged on the left side of the transmission strip along the length direction, a right transmission tooth array is arranged on the right side of the transmission strip along the length direction, the left transmission tooth array is in transmission meshing with the first gear shaft, and the right transmission tooth array is in transmission meshing with the second gear shaft;
a rectangular window is hollowed in the middle of the plate body, transmission tooth bodies are arrayed on one side edge of the rectangular window along the vertical direction, and transmission gears are further arranged in the rectangular window and are in transmission meshing with the transmission tooth bodies; a left motor cabin and a right motor cabin are respectively arranged inside the left part of the bracket and inside the right part of the bracket; a left motor and a right motor are respectively arranged in the left motor cabin and the right motor cabin; and the output ends of the left motor and the right motor are jointly connected with the transmission gear in a driving way.
Further, the bucket body bracket is made of structural steel; the left motor and the right motor are braking motors
Further, a working method of the crane grab bucket;
step one, in an initial state, a left bucket body and a right bucket body are in a mutually opened state, a left bucket cavity and a right bucket cavity are separated from each other, and the left bucket cavity and the right bucket cavity are completely filled by a left part of a support and a right part of the support respectively; at the moment, the left motor and the right motor control the transmission gear to be in a braking state;
then the hoisting beam transfers the sludge grab bucket in the open state to the position above the liquid level of the sludge to be grabbed through the suspension rope; then controlling the whole sludge grab bucket in an opened state to move downwards until the counterclockwise end of the left part of the bracket and the clockwise end of the right part of the bracket just contact the sludge liquid level;
step two, the process of grabbing the sludge by the sludge grab bucket: controlling the left motor and the right motor to lose power, so that the transmission gear is in a free state capable of rotating randomly, the plate body is suspended by a static hoisting suspension rope, the height of the plate body is constant, the bucket body bracket can automatically descend under the action of self gravity, the descending of the bucket body bracket can synchronously descend the first gear shaft and the second gear shaft under the supporting and driving of the bearing seat, so that the first gear shaft rotates anticlockwise under the transmission of the static left transmission gear array and the static right transmission gear array, and the second gear shaft rotates clockwise; the counterclockwise rotation of the first gear shaft and the clockwise rotation of the second gear shaft enable the left inner arc wall to rotate counterclockwise and the right inner arc wall to rotate clockwise under the meshing transmission of the plurality of first transmission tooth bodies and the plurality of second transmission tooth bodies, thereby leading the left bucket body to rotate anticlockwise along the self axis while following the bucket body bracket to descend, leading the right bucket body to rotate clockwise along the self axis while following the bucket body bracket to descend, thereby realizing the mutual close folding movement between the left bucket body and the right bucket body, and in the process of the mutual close folding movement between the left bucket body and the right bucket body, the left part of the bracket gradually separates from the left hopper cavity along the clockwise direction to enable the left hopper cavity to gradually form negative pressure, thereby promoting the sludge around to be sucked into the left hopper cavity, and simultaneously, the right part of the bracket gradually separates from the right hopper cavity along the anticlockwise direction, so that the right hopper cavity gradually forms negative pressure, and the sludge around is promoted to be sucked into the right hopper cavity; until the counterclockwise end of the left bucket body and the clockwise end of the right bucket body are contacted with each other, the transmission part is completely locked, the sludge grab bucket is in a stable state, the left bucket body and the right bucket body are combined to form a semicircle, and the left bucket cavity and the right bucket cavity are combined to form a sludge accommodating cavity filled with sludge; the sludge grab bucket finishes the grabbing of the sludge;
step three, the process of releasing the sludge by the sludge grab bucket: the left motor and the right motor are powered on, so that the transmission gear rotates clockwise, the transmission gear and the transmission gear body do meshed motion, the plate body is suspended by the hoisting suspension rope, the plate body is in a static state in the height direction, the transmission gear and the transmission gear body do meshed motion at the moment, the transmission gear is rotated and simultaneously moves upwards, the left motor, the right motor and the bucket body support are driven by the upward displacement of the transmission gear to move upwards, the first gear shaft and the second gear shaft synchronously ascend under the supporting and driving of the bearing seat by the upward displacement of the bucket body support, the first gear shaft rotates clockwise under the transmission of the static left transmission gear array and the static right transmission gear array, and the second gear shaft rotates anticlockwise; clockwise rotation of first gear shaft and anticlockwise rotation of second gear shaft make left inner arc wall clockwise rotation and right inner arc wall anticlockwise rotation under the meshing transmission of a plurality of first transmission tooth bodys and a plurality of second transmission tooth bodys, thereby make left bucket body clockwise rotation, right bucket body anticlockwise rotation, thereby realize the opening motion of keeping away from each other between left bucket body and the right bucket body, until left bucket chamber and right bucket chamber are filled respectively by support left part and support right part completely, left bucket chamber and right bucket chamber are by the in-process that support left part and support right part were filled completely respectively, the silt of original filling in left bucket chamber and right bucket chamber is squeezed out completely by support left part and support right part, thereby realize the process of silt grab release silt, thereby avoid remaining in left bucket chamber and right bucket chamber because of the viscidity of silt.
Has the advantages that: the beneficial effects of the invention are as follows:
in the process of closing movement of mutual approaching between the left bucket body and the right bucket body, the left part of the bracket is gradually separated from the left bucket cavity along the clockwise direction, so that negative pressure is gradually formed in the left bucket cavity, thereby promoting peripheral sludge to be sucked into the left bucket cavity, and meanwhile, the right part of the bracket is gradually separated from the right bucket cavity along the anticlockwise direction, thereby gradually forming negative pressure in the right bucket cavity, and further promoting peripheral sludge to be sucked into the right bucket cavity;
the in-process that left side fill chamber and right side fill chamber were filled completely by support left part and support right part respectively, and the silt of filling in left side fill chamber and right side fill intracavity is extruded completely by support left part and support right part to realize the process of silt grab bucket release silt, thereby avoid remaining in left side fill chamber and right side fill intracavity because of the viscidity of silt.
Drawings
FIG. 1 is a schematic view of the entire crane;
FIG. 2 is a schematic structural view of a sludge grab bucket;
FIG. 3 is a front view of a sludge grab;
FIG. 4 is a side view of a sludge grab;
FIG. 5 is a schematic sectional view of the sludge grab (the left bucket and the right bucket are folded together);
FIG. 6 is a second cutaway schematic of FIG. 5;
FIG. 7 is a schematic diagram of a plate structure;
FIG. 8 is a schematic structural view of the left bucket body and the right bucket body when they are folded together;
FIG. 9 is a schematic front sectional view of the sludge grab at the end of step one or step three;
FIG. 10 is a schematic front sectional view of a sludge grab during step two or step three;
figure 11 is a schematic front section of a sludge grab at the end of step two.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The crane grab bucket shown in the attached figures 1 to 11 comprises a lifting beam 1, wherein the tail end of the lifting beam 1 is connected with a lifting suspension rope 2, the lower end of the suspension rope 2 is connected with a sludge grab bucket 3 in a suspension manner, and the sludge grab bucket 3 can grab and release sludge.
The sludge grab bucket 3 comprises a bucket body bracket 11, and a left bucket body 9 and a right bucket body 10 are symmetrically arranged at the left and right sides of the lower side of the bucket body bracket 11; the left bucket body 9 and the right bucket body 10 can move in a mutual closing mode and a mutual opening mode.
The bucket body bracket 11 comprises a bracket left part 11.1 and a bracket right part 11.2 which are bilaterally symmetrical; the left bucket body 9 and the right bucket body 10 are internally provided with a left bucket cavity 30 and a right bucket cavity 34 respectively;
when the left bucket body 9 and the right bucket body 10 are in a mutually folded state, the left bucket cavity 30 and the right bucket cavity 34 are mutually communicated, and the left bucket cavity 30 and the right bucket cavity 34 are combined to form a closed sludge accommodating cavity 71;
when the left bucket body 9 and the right bucket body 10 are in a mutually opened state, the left bucket cavity 30 and the right bucket cavity 34 are separated from each other, and the left bucket cavity 30 and the right bucket cavity 34 are filled by the left support part 11.1 and the right support part 11.2 respectively.
The bucket body support 11 is of a fan-shaped ring structure with a central angle larger than 180 degrees, and the opening of the fan-shaped ring of the bucket body support 11 faces downwards; the left bucket body 9 and the right bucket body 10 are both in a fan-shaped ring structure with a central angle equal to 90 degrees, and the circle center of the fan-shaped ring of the bucket body support 11, the circle center of the fan-shaped ring of the left bucket body 9 and the circle center of the fan-shaped ring of the right bucket body 10 are all coincided;
the left bucket cavity 30 in the left bucket body 9 is a fan-shaped annular channel which is communicated along the clockwise direction and has a central angle equal to 90 degrees, and the right bucket cavity 34 in the right bucket body 10 is a fan-shaped annular channel which is communicated along the anticlockwise direction and has a central angle equal to 90 degrees; the counterclockwise end 42.1 of the left part 11.1 of the bracket is movably inserted into the clockwise end in the left bucket cavity 30; the clockwise end of the right part 11.2 of the bracket is movably inserted into the counterclockwise end in the right bucket cavity 34; the outer wall surface of the left part 11.1 of the bracket is in sliding fit with the inner wall surface of the left bucket cavity 30; the outer wall surface of the bracket right part 11.2 is in sliding fit with the inner wall surface of the right bucket cavity 34; the left bucket body 9 and the right bucket body 10 rotate along the axis of the fan-shaped ring body of the bucket body under the constraint of the arc outer walls of the left support part 11.1 and the right support part 11.2 respectively.
In order to ensure the volumes of the left bucket cavity 30 and the right bucket cavity 34, the central angle of the fan-ring structure of the bucket body bracket 11 of the embodiment is smaller than 240 degrees on the basis of larger than 180 degrees.
The arc-shaped wall body of the left bucket body 9 far away from the axis of the left bucket body is a left outer arc wall 33, and the arc-shaped wall body of the left bucket body 9 near the axis of the left bucket body is a left inner arc wall 28; the arc-shaped wall body of the right bucket body 10 far away from the axis of the right bucket body is a right outer arc wall 31, and the arc-shaped wall body of the right bucket body 10 near the axis of the right bucket body is a right inner arc wall 29; a plurality of first transmission tooth bodies 26 are distributed on one side surface of the left inner arc wall 28, which is far away from the left bucket cavity 30, in an equidistant array along the self arc direction; a plurality of second transmission tooth bodies 27 are distributed on one side surface of the right inner arc wall 29 away from the right hopper cavity 34 in an equidistant array manner along the self arc direction; the gear transmission mechanism further comprises a first gear shaft 17 and a second gear shaft 18, wherein the first gear shaft 17 is in transmission meshing with the plurality of first transmission gear bodies 26, and the second gear shaft 18 is in transmission meshing with the plurality of second transmission gear bodies 27; the rotation of the first gear shaft 17 drives the left bucket body 9 to rotate along the axis of the left bucket body under the meshing transmission; the rotation of the second gear shaft 18 drives the right bucket body 10 to rotate along the axis thereof under the meshing transmission.
The two ends of the first gear shaft 17 are fixedly connected with a first rotating shaft 15 coaxially, the two ends of the second gear shaft 18 are fixedly connected with a second rotating shaft 16 coaxially, and the first rotating shaft 15 and the second rotating shaft 16 are rotatably arranged on the first bearing seat 7 and the second bearing seat 8 through bearings respectively; the first bearing seat 7 and the second bearing seat 8 are fixedly connected to the bearing seat support 6 together, and the bearing seat support 6 is fixed on the bucket body support 11; still include additional strengthening arm 5, the both ends of additional strengthening arm 5 are fixed to be connected bearing frame and are supported 6 and bucket body support 11.
The middle part of the bucket body bracket 11 is provided with a vertically through sliding channel 41, the bucket body bracket also comprises a plate body 13 which vertically penetrates through the sliding channel 41 in a sliding manner, the top end of the plate body 13 is fixedly connected with a rope connector 12, and the rope connector 12 is fixedly connected with the lower end of the suspension rope 2;
the lower end of the plate body 13 is provided with a downwardly extending transmission bar 24, the lower end of the transmission bar 24 is connected with a tip part 14 with a downward pointed end, and the transmission bar 24 is positioned between the first gear shaft 17 and the second gear shaft 18; a left transmission tooth array 23 is arranged on the left side of the transmission strip 24 along the length direction, a right transmission tooth array 25 is arranged on the right side of the transmission strip 24 along the length direction, the left transmission tooth array 23 is in transmission meshing with the first gear shaft 17, and the right transmission tooth array 25 is in transmission meshing with the second gear shaft 18;
a rectangular window 19 is hollowed in the middle of the plate body 13, transmission gear bodies 20 are arrayed on one side edge of the rectangular window 19 along the vertical direction, a transmission gear 22 is further arranged in the rectangular window 19, and the transmission gear 22 is in transmission meshing with the transmission gear bodies 20; a left motor cabin 43.1 and a right motor cabin 43.2 are respectively arranged inside the left support part 11.1 and the right support part 11.2; a left motor 21.1 and a right motor 21.2 are respectively arranged in the left motor cabin 43.1 and the right motor cabin 43.2; the output ends of the left motor 21.1 and the right motor 21.2 are jointly connected with a transmission gear 22 in a driving way.
The bucket body bracket 11 of the present embodiment is made of structural steel; the left motor 21.1 and the right motor 21.2 are brake motors
The working method, the working principle and the beneficial effects of the crane grab bucket are as follows:
step one, in an initial state, a left bucket body 9 and a right bucket body 10 are in a mutually opened state, a left bucket cavity 30 and a right bucket cavity 34 are separated from each other, and the left bucket cavity 30 and the right bucket cavity 34 are completely filled with a left support part 11.1 and a right support part 11.2 respectively; at the moment, the left motor 21.1 and the right motor 21.2 control the transmission gear 22 to be in a braking state;
then the hoisting beam 1 transfers the sludge grab bucket 3 in the open state to the position above the sludge liquid level 87 to be grabbed through the suspension rope 2; then the sludge grab bucket 3 in the opened state is controlled to integrally move downwards until the counterclockwise end of the left part 11.1 of the bracket and the clockwise end of the right part 11.2 of the bracket just contact the sludge liquid level 87;
step two, the process that the sludge grab bucket 3 grabs the sludge: controlling the left motor 21.1 and the right motor 21.2 to lose power, so that the transmission gear 22 is in a free state capable of rotating freely, the plate body 13 is suspended by the static hoisting suspension rope 2, so that the height of the plate body 13 is constant, the bucket body bracket 11 can automatically descend under the action of self gravity, the descending of the bucket body bracket 11 can drive the first gear shaft 17 and the second gear shaft 18 to synchronously descend under the driving of the bearing seat support 6, so that the first gear shaft 17 rotates anticlockwise under the driving of the static left transmission gear array 23 and the static right transmission gear array 25, and the second gear shaft 18 rotates clockwise; the anticlockwise rotation of the first gear shaft 17 and the clockwise rotation of the second gear shaft 18 enable the left inner arc wall 28 to anticlockwise rotate and the right inner arc wall 29 to clockwise rotate under the meshing transmission of the first transmission tooth bodies 26 and the second transmission tooth bodies 27, so that the left bucket body 9 also anticlockwise rotates along the axis of the left bucket body 9 while descending along with the bucket body support 11, the right bucket body 10 also clockwise rotates along the axis of the right bucket body 10 while descending along with the bucket body support 11, the left bucket body 9 and the right bucket body 10 are closed to each other, in the process of the closed movement of the left bucket body 9 and the right bucket body 10, the left part 11.1 of the support gradually separates from the left bucket cavity 30 in the clockwise direction, the left bucket cavity 30 gradually forms negative pressure, the suction of sludge around the left bucket cavity 30 is promoted, and meanwhile, the right part 11.2 of the support gradually separates from the right bucket cavity 34 in the anticlockwise direction, the negative pressure is gradually formed in the right bucket cavity 34, so that the sludge around is promoted to be sucked into the right bucket cavity 34; until the counterclockwise end of the left bucket body 9 and the clockwise end of the right bucket body 10 are contacted with each other, the transmission part is completely locked, the sludge grab bucket 3 is in a stable state, the combination of the left bucket body 9 and the right bucket body 10 just forms a semicircle, and the combination of the left bucket cavity 30 and the right bucket cavity 34 forms a sludge accommodating cavity 71 filled with sludge; so far, the sludge grab bucket 3 finishes the grabbing of the sludge;
step three, the process of releasing the sludge by the sludge grab bucket 3: the left motor 21.1 and the right motor 21.2 are powered on, so that the transmission gear 22 rotates clockwise, the transmission gear 22 and the transmission gear body 20 do meshing motion, the plate body 13 is suspended by the hoisting suspension rope 2, the plate body 13 is in a static state in the height direction, at the moment, the transmission gear 22 and the transmission gear body 20 do meshing motion, so that the transmission gear 22 rotates and moves upwards, the upward displacement of the transmission gear 22 can drive the left motor 21.1, the right motor 21.2 and the bucket body bracket 11 to move upwards, the upward displacement of the bucket body bracket 11 can drive the first gear shaft 17 and the second gear shaft 18 to synchronously ascend under the driving of the bearing seat support 6, so that the first gear shaft 17 rotates clockwise under the driving of the static left transmission gear array 23 and the static right transmission gear array 25, and the second gear shaft 18 rotates anticlockwise; the clockwise rotation of the first gear shaft 17 and the counterclockwise rotation of the second gear shaft 18 rotate the left inner arc wall 28 clockwise and the right inner arc wall 29 counterclockwise under the meshing transmission of the plurality of first transmission gear bodies 26 and the plurality of second transmission gear bodies 27, so that the left bucket body 9 rotates clockwise, the right bucket body 10 rotates anticlockwise, and the opening movement of the left bucket body 9 and the right bucket body 10 which are far away from each other is realized until the left bucket cavity 30 and the right bucket cavity 34 are completely filled by the left bracket part 11.1 and the right bracket part 11.2 respectively, and in the process that the left bucket cavity 30 and the right bucket cavity 34 are completely filled by the left bracket part 11.1 and the right bracket part 11.2 respectively, sludge originally filled in the left hopper cavity 30 and the right hopper cavity 34 is completely extruded by the left part 11.1 and the right part 11.2 of the bracket, thereby realizing a process of releasing the sludge by the sludge grab 3, and avoiding the sludge from remaining in the left and right hopper chambers 30 and 34 due to the viscosity of the sludge.
The above is only a preferred embodiment of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (10)
1. Crane grab bucket, its characterized in that: including lifting beam (1), the end-to-end connection of lifting beam (1) has jack-up suspension rope (2), the lower extreme of suspension rope (2) hangs and is connected with silt grab bucket (3), silt grab bucket (3) can be with silt claw play and release.
2. The crane grab of claim 1, wherein: the sludge grab bucket (3) comprises a bucket body bracket (11), and a left bucket body (9) and a right bucket body (10) are symmetrically arranged on the left and right of the lower side of the bucket body bracket (11); the left bucket body (9) and the right bucket body (10) can be closed and opened mutually.
3. The crane grab of claim 2, wherein: the bucket body support (11) comprises a left support part (11.1) and a right support part (11.2) which are bilaterally symmetrical; the left bucket body (9) and the right bucket body (10) are internally provided with a left bucket cavity (30) and a right bucket cavity (34) respectively;
when the left bucket body (9) and the right bucket body (10) are in a mutually folded state, the left bucket cavity (30) and the right bucket cavity (34) are communicated with each other, and the left bucket cavity (30) and the right bucket cavity (34) are combined to form a closed sludge accommodating cavity (71);
when the left bucket body (9) and the right bucket body (10) are in a mutually opened state, the left bucket cavity (30) and the right bucket cavity (34) are separated from each other, and the left bucket cavity (30) and the right bucket cavity (34) are filled with the left part (11.1) and the right part (11.2) of the support respectively.
4. A crane grab according to claim 3, wherein: the bucket body support (11) is of a fan-shaped ring structure with a central angle larger than 180 degrees, and the opening of the fan-shaped ring of the bucket body support (11) faces downwards; the left bucket body (9) and the right bucket body (10) are both of fan-shaped ring structures with central angles equal to 90 degrees, and the circle center of the fan-shaped ring of the bucket body support (11), the circle center of the fan-shaped ring of the left bucket body (9) and the circle center of the fan-shaped ring of the right bucket body (10) are all overlapped;
the left bucket cavity (30) in the left bucket body (9) is a fan-shaped annular channel which is communicated along the clockwise direction and has a central angle equal to 90 degrees, and the right bucket cavity (34) in the right bucket body (10) is a fan-shaped annular channel which is communicated along the anticlockwise direction and has a central angle equal to 90 degrees; the anticlockwise end (42.1) of the left part (11.1) of the bracket is movably inserted into the clockwise end in the left bucket cavity (30); the clockwise end of the right part (11.2) of the bracket is movably inserted into the counterclockwise end in the right bucket cavity (34); the outer wall surface of the left part (11.1) of the bracket is in sliding fit with the inner wall surface of the left bucket cavity (30); the outer wall surface of the right part (11.2) of the bracket is in sliding fit with the inner wall surface of the right bucket cavity (34); the left bucket body (9) and the right bucket body (10) rotate along the axis of the fan ring body under the constraint of the arc outer walls of the left part (11.1) and the right part (11.2) of the support respectively.
5. A crane grab according to claim 3, wherein: the central angle of the fan-shaped ring body structure of the bucket body support (11) is smaller than 240 degrees on the basis of being larger than 180 degrees.
6. The crane grab of claim 5, wherein: the arc-shaped wall body of the left bucket body (9) far away from the axis of the left bucket body is a left outer arc wall (33), and the arc-shaped wall body of the left bucket body (9) near the axis of the left bucket body is a left inner arc wall (28); the arc-shaped wall body of the right bucket body (10) far away from the axis of the right bucket body is a right outer arc wall (31), and the arc-shaped wall body of the right bucket body (10) near the axis of the right bucket body is a right inner arc wall (29); a plurality of first transmission tooth bodies (26) are distributed on one side surface of the left inner arc wall (28) far away from the left hopper cavity (30) in an equidistant array manner along the self arc direction; a plurality of second transmission tooth bodies (27) are distributed on one side surface of the right inner arc wall (29) far away from the right hopper cavity (34) in an equidistant array manner along the self arc direction; the gear transmission mechanism further comprises a first gear shaft (17) and a second gear shaft (18), wherein the first gear shaft (17) is in transmission engagement with the first transmission gear bodies (26), and the second gear shaft (18) is in transmission engagement with the second transmission gear bodies (27); the rotation of the first gear shaft (17) drives the left bucket body (9) to rotate along the axis of the left bucket body under meshing transmission; the rotation of the second gear shaft (18) drives the right bucket body (10) to rotate along the axis of the right bucket body under meshing transmission.
7. A crane grab according to claim 6, wherein: the two ends of the first gear shaft (17) are coaxially and fixedly connected with a first rotating shaft (15), the two ends of the second gear shaft (18) are coaxially and fixedly connected with a second rotating shaft (16), and the first rotating shaft (15) and the second rotating shaft (16) are respectively rotatably installed on the first bearing block (7) and the second bearing block (8) through bearings; the first bearing seat (7) and the second bearing seat (8) are fixedly connected to a bearing seat support (6) together, and the bearing seat support (6) is fixed on the bucket body support (11); the bucket body support is characterized by further comprising a reinforcing structure arm (5), wherein the two ends of the reinforcing structure arm (5) are fixedly connected with the bearing seat support (6) and the bucket body support (11).
8. A crane grab according to claim 6, wherein: the middle part of the bucket body support (11) is provided with a vertically through sliding channel (41), the bucket body support further comprises a plate body (13) which vertically penetrates through the sliding channel (41) in a sliding mode, the top end of the plate body (13) is fixedly connected with a rope connector (12), and the rope connector (12) is fixedly connected with the lower end of the suspension rope (2);
the lower end of the plate body (13) is provided with a downwardly extending transmission bar (24), the lower end of the transmission bar (24) is connected with a tip part (14) with a downward tip end, and the transmission bar (24) is positioned between the first gear shaft (17) and the second gear shaft (18); a left transmission tooth array (23) is arranged on the left side of the transmission bar (24) along the length direction, a right transmission tooth array (25) is arranged on the right side of the transmission bar (24) along the length direction, the left transmission tooth array (23) is in transmission engagement with the first gear shaft (17), and the right transmission tooth array (25) is in transmission engagement with the second gear shaft (18);
a rectangular window (19) is hollowed in the middle of the plate body (13), transmission tooth bodies (20) are arranged on one side edge of the rectangular window (19) in an array mode along the vertical direction, a transmission gear (22) is further arranged in the rectangular window (19), and the transmission gear (22) is in transmission meshing with the transmission tooth bodies (20); a left motor cabin (43.1) and a right motor cabin (43.2) are respectively arranged inside the left support part (11.1) and the right support part (11.2); a left motor (21.1) and a right motor (21.2) are respectively arranged in the left motor bin (43.1) and the right motor bin (43.2); the output ends of the left motor (21.1) and the right motor (21.2) are jointly in driving connection with the transmission gear (22).
9. Method of operating a crane grab according to claim 8, characterized in that: the bucket body bracket (11) is made of structural steel; the left motor (21.1) and the right motor (21.2) are brake motors.
10. Method of operating a crane grab according to claim 8, characterized in that:
step one, in an initial state, a left bucket body (9) and a right bucket body (10) are in a mutually opened state, a left bucket cavity (30) and a right bucket cavity (34) are mutually separated, and the left bucket cavity (30) and the right bucket cavity (34) are completely filled with a left support part (11.1) and a right support part (11.2) respectively; at the moment, the left motor (21.1) and the right motor (21.2) control the transmission gear (22) to be in a braking state;
then the hoisting beam (1) transfers the sludge grab bucket (3) in an open state to a position above a sludge liquid level (87) to be grabbed through the suspension rope (2); then the sludge grab bucket (3) in an opening state is controlled to integrally move downwards until the counterclockwise end of the left part (11.1) of the bracket and the clockwise end of the right part (11.2) of the bracket just contact the sludge liquid level (87);
step two, the process that the sludge grab bucket (3) grabs the sludge is as follows: controlling the left motor (21.1) and the right motor (21.2) to lose power, so that the transmission gear (22) is in a free state capable of rotating randomly, the plate body (13) is suspended by the static hoisting suspension rope (2), so that the height of the plate body (13) is constant, the bucket body bracket (11) can automatically descend under the action of self gravity, the descending of the bucket body bracket (11) can drive the first gear shaft (17) and the second gear shaft (18) to synchronously descend under the driving of the bearing seat support (6), so that the first gear shaft (17) rotates anticlockwise under the driving of the static left transmission gear array (23) and the static right transmission gear array (25), and the second gear shaft (18) rotates clockwise; the anticlockwise rotation of the first gear shaft (17) and the clockwise rotation of the second gear shaft (18) enable the left inner arc wall (28) to anticlockwise rotate and the right inner arc wall (29) to clockwise rotate under the meshing transmission of the first transmission tooth bodies (26) and the second transmission tooth bodies (27), so that the left bucket body (9) can anticlockwise rotate along the axis of the left bucket body while the bucket body support (11) descends, the right bucket body (10) can clockwise rotate along the axis of the right bucket body while the bucket body support (11) descends, the left bucket body (9) and the right bucket body (10) are close to each other, in the process of closing movement of the left bucket body (9) and the right bucket body (10) close to each other, the left part (11.1) of the support gradually separates from the left bucket cavity (30) in the clockwise direction, the left bucket cavity (30) gradually forms negative pressure, and therefore the suction of sludge around the left bucket cavity (30) is promoted, meanwhile, the right part (11.2) of the bracket gradually separates from the right hopper cavity (34) along the counterclockwise direction, so that negative pressure is gradually formed in the right hopper cavity (34), and therefore sludge around is promoted to be sucked into the right hopper cavity (34); until the counterclockwise end of the left bucket body (9) is contacted with the clockwise end of the right bucket body (10), the transmission part is completely locked, the sludge grab bucket (3) is in a stable state, the left bucket body (9) is combined with the right bucket body (10) to form a semicircle, and the combination of the left bucket cavity (30) and the right bucket cavity (34) forms a sludge accommodating cavity (71) filled with sludge; so far, the sludge grab bucket (3) finishes the grabbing of the sludge;
step three, the process of releasing the sludge by the sludge grab bucket (3) comprises the following steps: the left motor (21.1) and the right motor (21.2) are electrified, so that the transmission gear (22) rotates clockwise, the transmission gear (22) and the transmission gear body (20) do meshing motion, the plate body (13) is suspended by the hoisting suspension rope (2), the plate body (13) is in a static state in the height direction, at the moment, the transmission gear (22) and the transmission gear body (20) do meshing motion to enable the transmission gear (22) to rotate and simultaneously move upwards, the upward displacement of the transmission gear (22) can drive the left motor (21.1), the right motor (21.2) and the bucket body bracket (11) to move upwards, the upward displacement of the bucket body bracket (11) can drive the first gear shaft (17) and the second gear shaft (18) to synchronously ascend under the driving of the static left transmission gear array (23) and the static right transmission gear array (25), and the first gear shaft (17) rotates clockwise, the second gear shaft (18) rotates anticlockwise; the clockwise rotation of the first gear shaft (17) and the anticlockwise rotation of the second gear shaft (18) enable the left inner arc wall (28) to rotate clockwise and the right inner arc wall (29) to rotate anticlockwise under the meshing transmission of the first transmission tooth bodies (26) and the second transmission tooth bodies (27), so that the left bucket body (9) rotates clockwise and the right bucket body (10) rotates anticlockwise, and therefore the left bucket body (9) and the right bucket body (10) are separated from each other to do opening movement until the left bucket cavity (30) and the right bucket cavity (34) are completely filled by the left bracket part (11.1) and the right bracket part (11.2) respectively, and in the process that the left bucket cavity (30) and the right bucket cavity (34) are completely filled by the left bracket part (11.1) and the right bracket part (11.2) respectively, sludge originally filled in the left bucket cavity (30) and the right bucket cavity (34) is completely extruded out of the left bracket part (11.1) and the right bracket part (11.2), therefore, the process that the sludge grab bucket (3) releases sludge is realized, and the sludge is prevented from remaining in the left bucket cavity (30) and the right bucket cavity (34) due to the viscosity of the sludge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010300562.3A CN111453612A (en) | 2020-04-16 | 2020-04-16 | Crane grab bucket and working construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010300562.3A CN111453612A (en) | 2020-04-16 | 2020-04-16 | Crane grab bucket and working construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111453612A true CN111453612A (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010300562.3A Withdrawn CN111453612A (en) | 2020-04-16 | 2020-04-16 | Crane grab bucket and working construction method |
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| Country | Link |
|---|---|
| CN (1) | CN111453612A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961048A (en) * | 2015-06-16 | 2015-10-07 | 安庆市华鑫重工股份有限公司 | Special negative-pressure grab bucket |
| CN108316383A (en) * | 2017-12-12 | 2018-07-24 | 湖南百特随车起重机有限公司 | A kind of Accrete clearing device and the crane with Accrete clearing device |
-
2020
- 2020-04-16 CN CN202010300562.3A patent/CN111453612A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961048A (en) * | 2015-06-16 | 2015-10-07 | 安庆市华鑫重工股份有限公司 | Special negative-pressure grab bucket |
| CN108316383A (en) * | 2017-12-12 | 2018-07-24 | 湖南百特随车起重机有限公司 | A kind of Accrete clearing device and the crane with Accrete clearing device |
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Application publication date: 20200728 |