CN115196511A - Crane for coal mine conveying - Google Patents
Crane for coal mine conveying Download PDFInfo
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- CN115196511A CN115196511A CN202211118556.1A CN202211118556A CN115196511A CN 115196511 A CN115196511 A CN 115196511A CN 202211118556 A CN202211118556 A CN 202211118556A CN 115196511 A CN115196511 A CN 115196511A
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- 239000003245 coal Substances 0.000 title claims abstract description 31
- 238000004804 winding Methods 0.000 claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims description 155
- 230000007246 mechanism Effects 0.000 claims description 48
- 230000003405 preventing effect Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Classifications
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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
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
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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
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/16—Rope, cable, or chain drives for trolleys; Combinations of such drives with hoisting gear
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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
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
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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
- B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
- B66C13/14—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices to load-engaging elements or motors associated therewith
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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
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/14—Trolley or crane travel drives
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The invention relates to the technical field of cranes, in particular to a crane for coal mine conveying. A crane for coal mine conveying comprises a frame, a lifting appliance, a winding device and an anti-swing device; the winding device is used for lowering and retracting the lifting appliance; the fixed pulley is arranged on the frame, and the winding device can drive the fixed pulley to rotate; the lifting rope is wound on the fixed pulley and penetrates through the two anti-swing rods, the distance defined between the fixed pulley and the anti-swing rods is called a first fixed distance, and the distance defined between the anti-swing rods and the lifting hook is called a first movable distance. According to the crane for coal mine conveying, the anti-swing rod is arranged, so that when a lifting rope is lowered, the anti-swing rod is driven to move downwards, the length of a first certain distance is increased, and the swinging degree of the lifting rope during descending is reduced to a certain extent; when the lifting rope is retracted, the lifting objects with different weights are distinguished, the length of the first fixed distance is adjusted adaptively, the lifting objects with heavier mass are lifted when the lifting objects are lifted, and the anti-shaking effect is better.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a crane for coal mine conveying.
Background
When the crane is used as a material handling machine, a heavy object to be transported is lifted mainly through the matching of a lifting rope and a lifting hook. When transporting coal, a large amount of cranes are needed to work, when the cranes work, the cranes need to be started and braked ceaselessly, and the lifting ropes are of flexible structures, so that the swinging of the cranes is caused, and how to reduce the swinging of the lifting ropes of the cranes when the cranes are used is a problem to be solved continuously.
Application number is 202010799891.7's patent application discloses a hoist is with preventing device that sways, including slide rail set spare, jack-up slider, cable subassembly, through embracing cable subassembly cooperation servo mechanism placed in the middle, make the few part cable of cable hypomere can freely move, the cable of upper segment is gone up and down under the state of embracing the cable subassembly to hold tightly, realizes the relatively fixed of this part cable, avoids the influence that the upper segment cable removed the lower extreme cable, can reduce the range of rocking of hoist cable.
However, the application is realized by fixing the activity value of the lower cable and increasing the fixed value of the upper cable, the variable is controlled by a single sensor, the anti-swing amount cannot be adjusted correspondingly according to the self weight of a lifted object, and when the crane is used, the cables need to be completely contracted and put down to a specified place after being contracted.
Disclosure of Invention
The invention provides a crane for coal mine conveying, which solves the problems that the existing crane cannot correspondingly adjust the anti-swing amount according to the self weight of a lifted object, and in use, cables need to be completely contracted and then put down to a specified place after being contracted, the cables are repeatedly wound and unwound in the mode, the requirement of transferring the position of the lifted object after lifting cannot be met while shaking is prevented, the crane is complicated to use, frequent lifting is not beneficial to benign use of the crane, and even the service life of the crane is influenced.
The invention relates to a crane for coal mine conveying, which adopts the following technical scheme: a crane for coal mine conveying comprises a cross beam, a rack, a lifting appliance, a winding device and an anti-swing device; the lifting appliance, the rack, the rolling device and the anti-swing device are all arranged on the cross beam; the winding device is used for lowering and retracting the lifting appliance; the lifting appliance comprises a lifting rope and a lifting hook; the lifting hook is arranged on the lifting rope; the anti-swing device comprises a fixed pulley, two anti-swing rods, a second transmission wheel, two first transmission wheels, a first transmission mechanism and a gravity adjusting mechanism; the fixed pulley is arranged on the frame, and the winding device can drive the fixed pulley to rotate; the lifting rope is wound on the fixed pulley and penetrates through the two anti-swing rods, the distance defined between the fixed pulley and the anti-swing rods is called a first fixed distance, and the distance defined between the anti-swing rods and the lifting hook is called a first movable distance; the second transmission wheel and the fixed pulley are coaxially arranged to rotate along with the fixed pulley, the second transmission wheel is a conical friction wheel, the two first transmission wheels are meshed with the second transmission wheel simultaneously, in addition, the two first transmission wheels are meshed with one end with a large diameter of the second transmission wheel in an initial state, and the two first transmission wheels rotate to drive the first transmission mechanism; the first transmission mechanism is configured to enable the two anti-swing rods to move downwards when the lifting appliance is lowered, so that the first certain distance is increased; when the lifting appliance is retracted, the two anti-swing rods move upwards to reduce the first certain distance; the gravity adjusting mechanism is configured to change the transmission ratio between the second transmission wheel and the two first transmission wheels according to the mass of the lifted object, and when the lifting appliance is retracted, the ascending distance of the two swing-proof rods is inversely proportional to the mass of the lifted object, so that the value of the first certain distance is adjusted to be reduced.
Further, the first transmission mechanism comprises a second gear and a first rack; each first transmission wheel is coaxially arranged with one second gear, the inner ends of the two anti-swing rods are respectively provided with a first rack, each second gear is meshed with the corresponding first rack, and when the second gears rotate, the two anti-swing rods synchronously move downwards.
Further, the gravity adjusting mechanism comprises a first elastic piece, a transmission shaft and a second transmission mechanism; the transmission wheel is connected with the rack through a plurality of first elastic pieces; the first elastic piece enables the second transmission wheel to have a trend of being far away from the first elastic piece; the fixed pulley is connected with the second driving wheel through a transmission shaft, when a hoisted object is hoisted, the second driving wheel moves downwards to drive the second transmission mechanism, and the second transmission mechanism is configured to enable the second driving wheel to move from one end with a large diameter to one end with a small diameter so as to change the transmission ratio of meshing between the second driving wheel and the two first driving wheels.
Further, the second transmission mechanism comprises a lead screw, a shifting gear and a second rack; a lead screw is arranged between the second transmission wheel and the transmission shaft, the lead screw is in threaded connection with the transmission shaft, a shifting gear is arranged on the lead screw, and a second rack meshed with the shifting gear is arranged in the rack, so that when the second transmission wheel moves downwards, the shifting gear rotates to drive the lead screw to move, the second transmission wheel moves from one end with a large diameter to one end with a small diameter, and the transmission ratio meshed between the second transmission wheel and the two first transmission wheels is changed.
Furthermore, the crane also comprises a moving device, and the moving device is used for moving the lifted heavy object to a specified position; each anti-swing rod is provided with a rope hole for a lifting rope to pass through, the rope holes of the two anti-swing rods are symmetrically arranged, and the anti-swing device further comprises a movement adjusting mechanism; the movable adjusting mechanism comprises a baffle groove, a sliding block, a vertical rod, a connecting rod, a third driving wheel and a first gear; the blocking groove is arranged on the rope hole, and the sliding block is slidably arranged in the rope hole and is positioned in the blocking groove; each anti-swing rod is provided with a vertical rod groove, the vertical rod is arranged in the vertical rod groove, the vertical rod and the sliding block are rotatably connected through a connecting rod, and in the moving process of the anti-swing mechanism, the lifting rope reversely moves under the action of inertia to enable the lifting rope to drive the sliding block to move; the slide block moves to drive the vertical rod to move, the vertical rod can drive the third transmission wheel to rotate, and the third transmission wheel is meshed with the second gear, so that the second gear drives the anti-swing rods correspondingly arranged on the second gear to move downwards, and the two anti-swing rods are not positioned in the same horizontal direction any more; each anti-swing oscillating bar is sleeved with one first gear, the two first gears are meshed, and when one anti-swing oscillating bar swings, the other anti-swing oscillating bar swings reversely.
Furthermore, a bump is arranged on the third driving wheel, the vertical rod can be in contact with the bump, and the third driving wheel is pushed to rotate in the moving process of the vertical rod.
Further, the winding device comprises a winding motor and a winding wheel, the lifting rope is wound on the winding wheel, the winding wheel is installed on the winding motor, and the winding motor is used for driving the winding wheel to wind or unwind.
Further, the moving device comprises a moving motor and a moving wheel, and the moving motor is used for driving the moving wheel to move on the cross beam so as to move the lifted heavy object to a specified position for throwing.
The invention has the beneficial effects that:
1. according to the crane for coal mine conveying, the anti-swing rod is arranged, two working states of lowering and withdrawing of the lifting rope are set respectively, the anti-swing rod is driven to move downwards when the lifting rope is lowered, the length of a first certain distance is increased, and the swing degree of the lifting rope during lowering is reduced to a certain extent; when the lifting rope is retracted, the lifting ropes are distinguished according to lifting objects with different weights, the length of the first certain distance is adjusted adaptively, and the anti-shaking effect is better when the lifting objects rise and the lifting objects with heavier mass are lifted.
2. According to the invention, the anti-swing rods on two sides have different heights through different swing directions, so that the lifting rope generates a pulling force towards the moving direction on a lifted object, the amplitude of the back-and-forth swing of the object is reduced to a certain extent, the anti-swing effect is achieved in the moving and throwing process after the heavy object is lifted, the frequent winding and unwinding of the lifting rope is avoided, and the use is convenient.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is an overall structural view of an embodiment of a coal mine conveyor crane according to the present invention;
FIG. 2 is a schematic structural diagram of an anti-sway device of an embodiment of a coal mine haulage crane of the present invention;
FIG. 3 is a schematic front view of an anti-sway device of an embodiment of a coal mine haulage crane of the present invention;
FIG. 4 is an enlarged view taken along line A-A of FIG. 3;
FIG. 5 is an enlarged view of the portion B-B in FIG. 3;
FIG. 6 is an enlarged view of FIG. 3 at C-C;
FIG. 7 is a schematic structural diagram of an anti-sway bar of an embodiment of a crane for coal mine transportation according to the present invention;
FIG. 8 is a schematic view of an embodiment of a coal mine conveyor crane of the present invention in operation;
FIG. 9 is a schematic illustration of an embodiment of a coal mine conveyor crane of the present invention in operation during travel;
FIG. 10 is a schematic illustration of an embodiment of a coal mine conveyor crane of the present invention in operation during travel;
FIG. 11 is a schematic structural view of a movement adjustment mechanism of an embodiment of a coal mine conveying crane according to the present invention;
FIG. 12 is a top view of the movement adjustment mechanism of an embodiment of the coal mine conveyor crane of the present invention;
fig. 13 is a schematic structural view of a second transmission mechanism of the embodiment of the crane for coal mine transportation according to the present invention.
In the figure: 100. a winding device; 110. a winding wheel; 120. a winding motor; 200. a mobile device; 210. a moving wheel; 220. a moving motor; 300. an anti-sway device; 310. an anti-swing rod; 311. blocking the groove; 312. rope holes; 313. a vertical rod groove; 320. a first drive pulley; 330. a connecting rod; 340. a vertical rod; 350. a slider; 360. a third transmission wheel; 365. a bump; 370. a first gear; 380. a second gear; 390. a reverse gear; 410. a second transmission wheel; 420. a lead screw; 421. a shift gear; 422. a second rack; 430. a drive shaft; 440. a fixed pulley; 450. a pressure spring; 500. a hanger; 510. a lifting rope; 520. a hook; 550. a frame; 600. a cross member.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of a coal mine conveying crane according to the present invention is shown in fig. 1 to 13.
A crane for coal mine transportation comprises a beam 600, a frame 550, a hanger 500, a winding device 100 and an anti-swing device 300; the spreader 500, the frame 550, the winding device 100 and the anti-swing device 300 are all mounted on the beam 600; the winding device 100 is used for lowering and retracting the spreader 500; the winding device 100 comprises a winding motor 120 and a winding wheel 110, the lifting rope 510 is wound on the winding wheel 110, the winding wheel 110 is mounted on the winding motor 120, and the winding motor 120 is used for driving the winding wheel 110 to wind or unwind.
The spreader 500 comprises a lifting rope 510 and a hook 520; the hook 520 is mounted to the lifting rope 510; the anti-swing device 300 comprises a fixed pulley 440, two anti-swing rods 310, a second transmission wheel 410, two first transmission wheels 320, a first transmission mechanism and a gravity adjusting mechanism; the fixed pulley 440 is mounted on the frame 550, and the winding device 100 can drive the fixed pulley 440 to rotate; the lifting rope 510 is wound on the fixed pulley 440 and passes through the two swing preventing rods 310, the distance defined between the fixed pulley 440 and the swing preventing rods 310 is called a first fixed distance, and the distance defined between the swing preventing rods 310 and the lifting hook 520 is called a first movable distance; the second transmission wheel 410 is coaxially arranged with the fixed pulley 440 so as to rotate along with the fixed pulley 440, the second transmission wheel 410 is a conical friction wheel, the two first transmission wheels 320 are simultaneously meshed with the second transmission wheel 410, in addition, in the initial state, the two first transmission wheels 320 are meshed with one end with a large diameter of the second transmission wheel 410, and the two first transmission wheels 320 rotate so as to drive the first transmission mechanism; the first transmission mechanism is configured to move the two swing preventing bars 310 downward when the spreader 500 is lowered, so that the first certain distance is increased; when the lifting appliance 500 is retracted, the two anti-swing rods 310 are moved upwards, so that the first certain distance is reduced; the gravity adjusting mechanism is configured to change the transmission ratio between the second transmission wheel 410 and the two first transmission wheels 320 according to the mass of the hoisted object, so that the distance of the two swing preventing rods 310 rising is inversely proportional to the mass of the hoisted object when the spreader 500 is retracted, thereby adjusting the value of the first distance reduction.
When the crane is used, the winding device 100 enables the lifting rope 510 to move downwards, the second transmission wheel 410 rotates along with the fixed pulley 440, the two first transmission wheels 320 are driven to rotate, the swing-preventing rod 310 moves downwards through the first transmission mechanism, the length of the lifting rope 510 in the swing-preventing rod 310 is increased along with the downward movement of the swing-preventing rod 310, the length of the first certain distance is increased, and the swinging degree of the lifting rope 510 during descending is reduced to a certain degree. When the lifting rope needs to be retracted, the gravity adjusting mechanism is arranged, so that when the lifting appliance 500 is retracted, the ascending distance of the two swing preventing swing rods 310 is inversely proportional to the mass of a lifted object, and the value of the first certain distance is adjusted to be reduced. For hoisted objects with different masses, the larger the mass, the smaller the upward retraction amount of the swing preventing rod 310 of the hoisted object, that is, the larger the first certain distance, so that when the hoisted object ascends, the heavier the hoisted object, the better the swing preventing effect is.
In another embodiment, the first transmission mechanism includes the second gear 380 and a first rack; each first transmission wheel 320 is coaxially arranged with one second gear 380, the inner ends of the two anti-swing rods 310 are both provided with a first rack, each second gear 380 is meshed with one correspondingly arranged first rack, and when the second gears 380 rotate, the two anti-swing rods 310 synchronously move downwards. Specifically, the fixed pulley 440 is configured to rotate counterclockwise, and the first racks in the two anti-sway bars 310 are both disposed on the left side (as shown in fig. 3), so that the two anti-sway bars 310 move downward synchronously after being engaged with the second gear 380. As shown in fig. 6, the first racks in the two anti-swing levers 310 may be symmetrically arranged, that is, one rack is arranged on the left side, and the other rack is arranged on the right side, so that when the fixed pulley 440 rotates counterclockwise, the first driving wheel 320 on the right side drives the second gear 380 through the reverse gear 390, and the two anti-swing levers 310 may also move downward synchronously.
In another embodiment, the gravity adjusting mechanism includes a first elastic member, a transmission shaft 430, and a second transmission mechanism; the second driving wheel 410 is connected with the frame 550 through a plurality of first elastic members; the first elastic element is a compression spring 450, and the compression spring 450 enables the second transmission wheel 410 to have a tendency to be far away from the compression spring 450; the fixed pulley 440 is connected to the second transmission wheel 410 through a transmission shaft 430, and specifically, the transmission shaft 430 is installed in the fixed pulley 440 to drive the transmission shaft 430 to rotate when the fixed pulley 440 rotates, and the second transmission wheel 410 is installed on the transmission shaft 430 to rotate along with the transmission shaft 430.
When the hoisted object is hoisted, the second transmission wheel 410 moves downward to drive the second transmission mechanism, and the second transmission mechanism is configured to move the second transmission wheel 410 from one end with a large diameter to one end with a small diameter so as to change the transmission ratio of the engagement between the second transmission wheel 410 and the two first transmission wheels 320.
In another embodiment, the second transmission mechanism comprises a lead screw 420, a shift gear 421 and a second rack 422; a screw 420 is arranged between the second transmission wheel 410 and the transmission shaft 430, the screw 420 is in threaded connection with the transmission shaft 430, a shift gear 421 is arranged on the screw 420, a second rack 422 for meshing with the shift gear 421 is arranged in the rack 550, the second rack is arranged in the vertical direction, so that when the second transmission wheel 410 moves downwards, the shift gear 421 meshes with the second rack 422, the shift gear 421 rotates to drive the screw 420 to rotate, the screw 420 rotates to be in threaded transmission with the transmission shaft 430, the screw 420 moves towards the transmission shaft 430, and the second transmission wheel 410 is driven to move through the screw 420, (from right to left in fig. 4), that is, the shift gear 421 rotates to drive the screw 420 to move, so that the second transmission wheel 410 moves from one end with a large diameter to one end with a small diameter, and the transmission ratio of the second transmission wheel 410 to the two first transmission wheels 320 is changed.
In another embodiment, the crane further comprises a moving device 200, wherein the moving device 200 is used for moving the lifted heavy object to a specified position; the moving device 200 comprises a moving motor 220 and a moving wheel 210, wherein the moving motor 220 is used for driving the moving wheel 210 to move on the cross beam 600 so as to move the lifted weight to a designated position for throwing.
Each anti-swing rod 310 is provided with a rope hole 312 for the lifting rope 510 to pass through, the rope holes 312 of the two anti-swing rods 310 are symmetrically arranged, and the anti-swing device 300 further comprises a movement adjusting mechanism; the movable adjusting mechanism comprises a baffle slot 311, a sliding block 350, a vertical rod 340, a connecting rod 330, a third driving wheel 360 and a first gear 370; the retaining groove 311 is arranged on the rope hole 312, and the sliding block 350 is slidably arranged in the rope hole 312 and is positioned in the retaining groove 311; each anti-swing rod 310 is provided with a vertical rod groove 313, the vertical rod 340 is installed in the vertical rod groove 313, the vertical rod 340 is rotatably connected with the sliding block 350 through the connecting rod 330, in the moving process of the anti-swing mechanism, the lifting rope 510 reversely moves under the action of inertia, so that the lifting rope 510 drives the sliding block 350 to move, the sliding block 350 moves to drive the vertical rod 340 to move, the vertical rod 340 can drive the third driving wheel 360 to rotate, specifically, the third driving wheel 360 is provided with a convex block 365, the vertical rod 340 can be in contact with the convex block 365, and the third driving wheel 360 is pushed to rotate in the moving process of the vertical rod 340.
The third transmission wheel 360 is meshed with the second gears 380, the inner ends of the two anti-swing rods 310 are respectively provided with a first rack, each second gear 380 is meshed with a corresponding first rack, when the second gears 380 rotate, the second gears are meshed with the first racks, the right anti-swing rods 310 correspondingly arranged are driven to move downwards through the first racks, and therefore the two anti-swing rods 310 are not located in the same horizontal direction any more; each anti-swing rod 310 is sleeved with one first gear 370, and the two first gears 370 are meshed, so that when one anti-swing rod 310 swings, the other anti-swing rod 310 swings reversely.
The working process is as follows: as shown in fig. 1 to 3, the cross beam 600 is mounted on the base, the frame 550 is slidably mounted on the cross beam 600, and the moving motor 220 is used for driving the moving wheel 210 to move on the cross beam 600 so as to move the lifted weight to a designated position for releasing. The winding wheel 110 is wound with a lifting rope 510, the winding wheel 110 is mounted on the winding motor 120, and the winding motor 120 is used for driving the winding wheel 110 to wind up or pay off. As shown in fig. 4, the fixed pulley 440 is mounted to the frame 550, the lifting rope 510 is wound around the fixed pulley 440 and passes through the two sway preventing bars 310, and the lower end of the lifting rope 510 is mounted to the hook 520 to lift the heavy object.
When the rope unwinding device is used, firstly, the rope unwinding motor 120 is started to enable the fixed pulley 440 to rotate, the second transmission wheel 410 and the fixed pulley 440 are coaxially arranged, the second transmission wheel 410 is a conical friction wheel, the two first transmission wheels 320 are simultaneously meshed with the second transmission wheel 410, and in an initial state, the two first transmission wheels 320 are meshed with one end with the large diameter of the second transmission wheel 410, so that the two first transmission wheels 320 rotate, each first transmission wheel 320 is coaxially arranged with one second gear 380, the second gear 380 is driven to rotate, the inner ends of the two anti-swing rods 310 are respectively provided with a first rack, each second gear 380 is meshed with one corresponding first rack, and when the second gear 380 rotates, the two anti-swing rods 310 synchronously move downwards. The lifting rope 510 is wound around the fixed pulley 440 and passes through the two swing preventing bars 310, and a distance defined between the fixed pulley 440 and the swing preventing bars 310 is referred to as a first fixed distance, and a distance defined between the swing preventing bars 310 and the hook 520 is referred to as a first movable distance. The winding motor 120 stops the lifting rope 510 after reaching a predetermined position, and in the process, the second transmission wheel 410 is synchronously driven to rotate along with the rotation of the fixed pulley 440, so that the first transmission wheel 320 drives the second gear 380, and further the anti-swing rod 310 synchronously moves downwards, and along with the downward movement of the anti-swing rod 310, the length of the lifting rope 510 in the anti-swing rod 310 is increased, so that the length of the first certain distance is increased, and the swinging degree of the lifting rope 510 during descending is reduced to a certain extent.
As shown in fig. 3 and 4, the lower end of the second transmission wheel 410 is connected to the frame 550 through a plurality of compression springs 450, and the compression springs 450 make the second transmission wheel 410 located at the upper end of the frame 550 when no weight is lifted, so that the second rotating wheel 410 tends to move away from the compression springs 450. After the lifting rope 510 is lowered to a predetermined position, a weight, such as coal, is lifted by the lifting hook 520. Due to the existence of heavy objects and different weights of objects, the pressure spring 450 located between the second transmission wheel 410 and the rack 550 is subjected to downward pressures of different degrees, and then the second transmission wheel 410 is driven to move downward, the lead screw 420 is arranged between the second transmission wheel 410 and the transmission shaft 430, the lead screw 420 and the transmission shaft 430 are in threaded connection, the lead screw 420 is provided with the shifting gear 421, and the rack 550 is provided with the second rack 422 meshed with the shifting gear 421, so that when the second transmission wheel 410 moves downward, the shifting gear 421 rotates to drive the lead screw 420 to move, the second transmission wheel 410 moves from one end with a large diameter to one end with a small diameter, the transmission ratio meshed between the second transmission wheel 410 and the first transmission wheel 320 is further changed, and the transmission ratio is reduced, that is, the heavier lifting object causes the pressure spring 450 to move downward more, the larger the diameter of the second transmission wheel 410 meshed with the first transmission wheel 320 is further smaller, the distance between the two anti-swing rods 310 is smaller, and the value of the first certain distance is smaller.
After the lifting hook 520 and the lifted object are installed, the winding motor 120 is started, the directional gear rotates reversely to drive the second transmission wheel 410 to be meshed with the first transmission wheel 320, so that the two swing preventing rods 310 are retracted, the lifting rope 510 is lifted, for the lifted objects with different masses, the larger the mass of the swing preventing rod 310 of the lifted object is, the smaller the upward retraction amount is, namely, the larger the first certain distance is, and therefore when the lifted object is lifted, the heavier the mass of the lifted object is, and the better the anti-swing effect is.
After lifting an object to a preset position, starting the moving motor 220, installing the moving wheel 210 on the moving motor 220 to drive the whole anti-swing device 300 to move on the cross beam 600, as shown in fig. 8, and being the state of the anti-swing device 300 before moving, as shown in fig. 7, each anti-swing rod 310 is provided with a rope hole 312 for a lifting rope 510 to pass through, and the rope holes 312 of the two anti-swing rods 310 are symmetrically arranged, that is, one rope hole 312 is arranged on the right side of the anti-swing rod 310, and the other rope hole 312 is arranged on the left side of the anti-swing rod 310. As shown in fig. 5, the retaining groove 311 is disposed on the rope hole 312, the slider 350 is slidably mounted in the rope hole 312 and is located in the retaining groove 311, and when the slider 350 slides to contact with the inner wall of the retaining groove 311, the slider 350 is limited. Each swing-proof rod 310 is provided with a vertical rod groove 313, a vertical rod 340 is arranged in the vertical rod groove 313, and the vertical rod 340 is rotatably connected with the sliding block 350 through a connecting rod 330, and is particularly hinged.
In the process that the anti-swing device 300 moves rightwards, the lifting rope 510 will move leftwards under the action of inertia, so that the lifting rope 510 on the right side moves towards one side close to the slider 350, and the lifting rope 510 on the left side moves towards one side far away from the slider 350, so that the lifting rope 510 on the right side pushes the slider 350 to move towards the blocking slot 311, one end of the connecting rod 330 is rotatably connected with the slider 350, the other end of the connecting rod 330 is rotatably connected with the vertical rod 340, the vertical rod 340 is arranged along the vertical direction, a third driving wheel 360 is arranged in the rack 550, a lug 365 is arranged on the third driving wheel, when the lifting rope 510 on the right side pushes the slider 350 to move towards the blocking slot 311, the lug 340 is pulled to move towards the lug 365 by the connecting rod 330, so that the lug 365 contacts with the vertical rod 340, the anti-swing device 300 continues to move rightwards, the anti-swing rod 310 deflects leftwards due to swing inertia, so that the vertical rod 310 deflects leftwards, and then drives the vertical rod 340 to move synchronously, so that the anti-swing rod 310 drives the lug 340 to move synchronously in the process that the anti-swing rod 310 drives the lug 365 to move rightwards, and then drives the third driving wheel 360 to rotate.
The third transmission wheel 360 is meshed with the second gears 380, the rotation of the third transmission wheel 360 drives the second gears 380 to rotate, the inner ends of the two anti-swing rods 310 are respectively provided with a first rack, each second gear 380 is meshed with one correspondingly arranged first rack, when the second gears 380 rotate, the second gears are meshed with the first racks, the right anti-swing rods 310 correspondingly arranged on the second gears are driven to move downwards through the first racks, and therefore the two anti-swing rods 310 are no longer located in the same horizontal direction, as shown in fig. 9, the length of the right anti-swing rods 310 is larger than that of the left anti-swing rods 310. And after the lifting rope 510 on the right swings to the left and contacts the blocking slot 311, a leftward acting force is applied to the swing preventing bar 310, so that the swing preventing bar 310 on the left swings to the left, and the swing preventing bar 310 on the right moves away from the blocking slot 311 without or with a small swinging force.
As shown in fig. 7, each anti-swing rod 310 is sleeved with a first gear 370, when the anti-swing rod 310 swings, the first gears 370 swing synchronously, the two first gears 370 are engaged, when the anti-swing device 300 moves rightward, the anti-swing rod can swing leftward, when one anti-swing rod 310 swings leftward, the anti-swing rod drives the first gear 370 correspondingly arranged to rotate, and a reaction force is applied to the other first gear 370, so that the other anti-swing rod 310 swings rightward, as shown in fig. 9.
As shown in fig. 10, when the two anti-sway bars 310 continue to move, due to the arrangement of the first gear 370, when one anti-sway bar 310 swings to the left, the other anti-sway bar 310 swings to the right, and the swinging to the right of the other anti-sway bar 310 further causes the lifting rope 510 on the left side to bend to the right to generate a pulling force to the lifted object to the right, thereby reducing the amplitude of the swinging to and fro of the object to a certain extent, (giving a pulling force to the lifting rope 510 to move to the right to reduce the amplitude of the swinging to and fro of the lifting rope). And continuously moving the device to the designated position and then throwing. Therefore, after the weight is lifted, the anti-swing device 300 can also play a role in preventing swing in the moving and throwing process, and the lifting rope 510 does not need to be frequently stored and released, so that the use is convenient.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a hoist is used in colliery transport, includes the crossbeam, its characterized in that: the device also comprises a frame, a lifting appliance, a winding device and an anti-swing device; the lifting appliance, the rack, the winding device and the anti-swing device are all arranged on the cross beam;
the winding device is used for lowering and retracting the lifting appliance; the lifting appliance comprises a lifting rope and a lifting hook; the lifting hook is arranged on the lifting rope;
the anti-swing device comprises a fixed pulley, two anti-swing rods, a second transmission wheel, two first transmission wheels, a first transmission mechanism and a gravity adjusting mechanism; the fixed pulley is arranged on the frame, and the winding device can drive the fixed pulley to rotate;
the lifting rope is wound on the fixed pulley and penetrates through the two anti-swing rods, the distance defined between the fixed pulley and the anti-swing rods is called a first fixed distance, and the distance defined between the anti-swing rods and the lifting hook is called a first movable distance; the second transmission wheel and the fixed pulley are coaxially arranged to rotate along with the fixed pulley, the second transmission wheel is a conical friction wheel, the two first transmission wheels are meshed with the second transmission wheel simultaneously, in addition, the two first transmission wheels are meshed with one end with a large diameter of the second transmission wheel in an initial state, and the two first transmission wheels rotate to drive the first transmission mechanism; the first transmission mechanism is configured to enable the two swing preventing swing rods to move downwards when the lifting appliance is lowered, so that the first certain distance is increased; when the lifting appliance is retracted, the two anti-swing rods move upwards to reduce the first certain distance; the gravity adjusting mechanism is configured to change the transmission ratio between the second transmission wheel and the two first transmission wheels according to the mass of the lifted object, and when the lifting appliance is retracted, the ascending distance of the two swing preventing swing rods is in inverse proportion to the mass of the lifted object, so that the value of the first fixed distance is adjusted to be reduced.
2. The coal mine conveying crane according to claim 1, wherein: the first transmission mechanism comprises a second gear and a first rack; each first transmission wheel and one second gear are coaxially arranged, the inner ends of the two anti-swing rods are respectively provided with a first rack, each second gear is meshed with the corresponding first rack, and when the second gears rotate, the two anti-swing rods synchronously move downwards.
3. The coal mine conveying crane according to claim 1, wherein: the gravity adjusting mechanism comprises a first elastic piece, a transmission shaft and a second transmission mechanism; the transmission wheel is connected with the frame through a plurality of first elastic pieces; the first elastic part enables the second transmission wheel to have a trend of being far away from the first elastic part; the fixed pulley is connected with the second driving wheel through a transmission shaft, when a hoisted object is hoisted, the second driving wheel moves downwards to drive the second transmission mechanism, and the second transmission mechanism is configured to enable the second driving wheel to move from one end with a large diameter to one end with a small diameter so as to change the transmission ratio of meshing between the second driving wheel and the two first driving wheels.
4. The coal mine conveying crane according to claim 3, wherein: the second transmission mechanism comprises a lead screw, a shifting gear and a second rack; the screw rod is arranged between the second transmission wheel and the transmission shaft and is in threaded connection with the transmission shaft, the shifting gear is arranged on the screw rod, and the second rack meshed with the shifting gear is arranged in the rack, so that when the second transmission wheel moves downwards, the shifting gear rotates to drive the screw rod to move, the second transmission wheel moves from one end with a large diameter to one end with a small diameter, and the transmission ratio of meshing between the second transmission wheel and the two first transmission wheels is changed.
5. The coal mine conveying crane according to claim 1, wherein: the crane also comprises a moving device, and the moving device is used for moving the lifted heavy object to a specified position; each anti-swing rod is provided with a rope hole for a lifting rope to pass through, the rope holes of the two anti-swing rods are symmetrically arranged, and the anti-swing device further comprises a movement adjusting mechanism; the movable adjusting mechanism comprises a baffle groove, a sliding block, a vertical rod, a connecting rod, a third driving wheel and a first gear; the blocking groove is arranged on the rope hole, and the sliding block is slidably arranged in the rope hole and is positioned in the blocking groove; each anti-swing rod is provided with a vertical rod groove, the vertical rod is installed in the vertical rod groove, the vertical rod and the sliding block are rotatably connected through a connecting rod, and in the moving process of the anti-swing mechanism, the lifting rope reversely moves under the action of inertia, so that the lifting rope drives the sliding block to move; the slide block moves to drive the vertical rod to move, the vertical rod can drive the third transmission wheel to rotate, and the third transmission wheel is meshed with the second gear, so that the second gear drives the anti-swing rods correspondingly arranged on the second gear to move downwards, and the two anti-swing rods are not positioned in the same horizontal direction any more; each anti-swing rod is sleeved with one first gear, the two first gears are meshed, and when one anti-swing rod swings, the other anti-swing rod swings reversely.
6. The coal mine conveying crane according to claim 5, wherein: the third driving wheel is provided with a convex block, the vertical rod can be contacted with the convex block, and the third driving wheel is pushed to rotate in the moving process of the vertical rod.
7. The coal mine conveying crane according to claim 1, wherein: the winding device comprises a winding motor and a winding wheel, the lifting rope is wound on the winding wheel, the winding wheel is installed on the winding motor, and the winding motor is used for driving the winding wheel to wind or unwind.
8. The coal mine conveying crane according to claim 5, wherein: the moving device comprises a moving motor and a moving wheel, and the moving motor is used for driving the moving wheel to move on the cross beam so as to move the lifted heavy object to a designated position for throwing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211118556.1A CN115196511A (en) | 2022-09-15 | 2022-09-15 | Crane for coal mine conveying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211118556.1A CN115196511A (en) | 2022-09-15 | 2022-09-15 | Crane for coal mine conveying |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115196511A true CN115196511A (en) | 2022-10-18 |
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ID=83571886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211118556.1A Pending CN115196511A (en) | 2022-09-15 | 2022-09-15 | Crane for coal mine conveying |
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| Country | Link |
|---|---|
| CN (1) | CN115196511A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116654772A (en) * | 2023-07-27 | 2023-08-29 | 河南正则起重机械有限公司 | Single-beam crane |
| CN117585580A (en) * | 2024-01-18 | 2024-02-23 | 河南省大方重型机器有限公司 | Double-beam crane hoisting device capable of preventing carrying swing |
-
2022
- 2022-09-15 CN CN202211118556.1A patent/CN115196511A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116654772A (en) * | 2023-07-27 | 2023-08-29 | 河南正则起重机械有限公司 | Single-beam crane |
| CN116654772B (en) * | 2023-07-27 | 2023-10-17 | 河南正则起重机械有限公司 | Single-beam crane |
| CN117585580A (en) * | 2024-01-18 | 2024-02-23 | 河南省大方重型机器有限公司 | Double-beam crane hoisting device capable of preventing carrying swing |
| CN117585580B (en) * | 2024-01-18 | 2024-04-16 | 河南省大方重型机器有限公司 | Double-beam crane hoisting device capable of preventing carrying swing |
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Application publication date: 20221018 |
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