CN212893557U - Safety lifting hook for building construction - Google Patents
Safety lifting hook for building construction Download PDFInfo
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- CN212893557U CN212893557U CN202021326422.5U CN202021326422U CN212893557U CN 212893557 U CN212893557 U CN 212893557U CN 202021326422 U CN202021326422 U CN 202021326422U CN 212893557 U CN212893557 U CN 212893557U
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Abstract
The utility model belongs to a lifting hook technical field especially relates to a safe lifting hook is used in high building construction, it includes wire rope, driving motor, fixed winding wheel, the winding drive wheel, fixed pulley mechanism, lifting hook mechanism, this lifting hook, if certain wire rope fracture back in the use, under lifting hook mechanism and the gravity effect that plays the suspended object, cracked wire rope will slide, trigger the spacing layering in corresponding pulley unit through sliding, make the winding wire rope on the pulley in the pulley unit spacing, prevented lifting hook mechanism's continuation whereabouts to a certain extent, people and property below having protected. The utility model discloses in the lifting hook of design, if the wire rope fracture between third pulley unit and the winding drive wheel and by spacing back, when wanting to take off lifting hook mechanism, at first adorn stand-by motor on the crossbeam for first pivot is connected with stand-by motor's output shaft, takes off spacing bolt from spacing pinhole and spacing round hole in, then, it is rotatory through the fixed winding wheel of stand-by motor drive, with lifting hook mechanism pull-up.
Description
Technical Field
The utility model belongs to a lifting hook technical field especially relates to a safe lifting hook is used in high building construction.
Background
The crane is a common machine, in order to improve the lifting capacity, a hook form with multiplying power is generally adopted, the multiplying power is used as a hook, and a plurality of steel wire ropes are arranged side by side on the upper side; under normal use, the working state of the steel wire rope is under a safety coefficient, and the safety problem generally cannot occur; but occasionally, the cable may be partially squeezed when placed on the ground; after extrusion, the extrusion part can be broken in the normal use process, and the safety of people and property is seriously endangered; the utility model relates to a safe lifting hook of quadruple rate, it still has certain protective capacities after certain fracture of wire rope.
The utility model relates to a safe lifting hook is used in high building construction solves above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned defect among the prior art, the utility model discloses a safety lifting hook is used in high building construction, it adopts following technical scheme to realize.
The utility model provides a high building is built and is used safe lifting hook which characterized in that: the hoisting device comprises a steel wire rope, a driving motor, a fixed winding wheel, a winding driving wheel, a fixed pulley mechanism and a hook mechanism, wherein the driving motor is supported and installed on a cross beam of a crane or a tower crane through a motor, and the winding driving wheel is fixedly installed on an output shaft of the driving motor; the fixed winding wheel is rotatably arranged on the cross beam; the fixed pulley mechanism is arranged on the cross beam, and the lifting hook mechanism is arranged on the lower side of the cross beam through a steel wire rope.
The fixed pulley mechanism comprises a first pulley unit and a first mounting shell, wherein the first mounting shell is fixedly mounted on the cross beam, and the first pulley unit is mounted in the first mounting shell.
The lifting hook mechanism comprises a second pulley unit, a third pulley unit and a second mounting shell, wherein the lower end of the second mounting shell is provided with a hook; the second pulley unit and the third pulley unit are mounted in parallel in the second mounting case.
The first pulley unit, the second pulley unit and the third pulley unit are all provided with pulleys.
One end of the steel wire rope provided with the lifting hook mechanism is fixedly arranged on the winding driving wheel, and the other end of the steel wire rope passes through the pulleys in the third pulley unit, the first pulley unit and the second pulley unit in sequence and is fixedly arranged on the fixed winding wheel.
The first pulley unit comprises a centrifugal wheel, a limiting pressing strip, a pulley, a second rotating shaft, a plate spring and a third rotating shaft, wherein the second rotating shaft and the third rotating shaft are respectively rotatably arranged in the first mounting shell; the pulley is fixedly arranged at one end of the third rotating shaft, and the centrifugal wheel is fixedly arranged at one end of the first rotating shaft; the pulley and the centrifugal wheel are in one-way transmission connection through a gear; the limiting pressing strip is arranged in the first mounting shell in a swinging mode, and a plate spring is arranged between the limiting pressing strip and the first mounting shell; the limiting pressing bar is matched with a steel wire passing through the pulley; a plurality of centrifugal blocks are uniformly arranged in the centrifugal wheel in the circumferential direction, and a centrifugal spring is respectively arranged between each centrifugal block and the centrifugal wheel; the centrifugal block is matched with the limiting pressing strip.
The second pulley unit comprises a centrifugal wheel, a limiting pressing strip, a pulley, a second rotating shaft, a plate spring and a third rotating shaft, wherein the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft are completely the same as the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft in the first pulley unit in structure, and the installation relationship of the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft in the second installation shell is completely the same as the installation relationship of the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft in the first installation shell in the first pulley unit.
The third pulley unit comprises a centrifugal wheel, a limiting pressing strip, a pulley, a second rotating shaft, a plate spring and a third rotating shaft, wherein the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft have the same structure as the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft in the first pulley unit; the second rotating shaft and the third rotating shaft are respectively rotatably arranged in the second mounting shell; the pulley is fixedly arranged at one end of the third rotating shaft, and the centrifugal wheel is fixedly arranged at one end of the first rotating shaft; the pulley and the centrifugal wheel are in transmission connection through a gear; the two limiting pressing strips are arranged in the first mounting shell in a swinging mode and are positioned on two sides of a central connecting line of the centrifugal wheel and the pulley; a plate spring is respectively arranged between the two limiting pressing strips and the first mounting shell; the two limiting pressing strips are matched with the steel wire passing through the pulley.
The steel wire rope provided with the lifting hook mechanism takes a winding driving wheel as a starting end, and the steel wire rope is wound on the first pulley unit and the second pulley unit and enters from the non-swinging end of the corresponding limiting pressing strip.
The crossbeam is detachably provided with a limiting bolt which can limit the rotation of the fixed winding wheel.
As a further improvement of the technology, a second fixed support which plays a supporting role for the winding driving wheel is arranged on the cross beam; the first fixed support is arranged on the cross beam, the first rotating shaft is rotatably arranged on the first fixed support, and the fixed winding wheel is fixedly arranged at one end of the first rotating shaft; the other end of the first rotating shaft is provided with a plug which can be connected with a motor.
As a further improvement of the technology, the first fixed support is provided with a limit pin hole, and the fixed winding wheel is provided with a limit round hole; the limiting bolt is matched with the limiting pin hole and the limiting round hole.
As a further improvement of the present technology, a second gear is fixedly mounted to the other end of the third rotating shaft with respect to the first pulley unit and the second pulley unit; the first gear is arranged at the other end of the second rotating shaft through a one-way clutch and meshed with the second gear.
For the third pulley unit, the other end of the third rotating shaft is fixedly provided with a second gear; the first gear is arranged at the other end of the second rotating shaft and is meshed with the second gear.
As a further improvement of the present technology, a partition plate for isolating the second pulley unit and the third pulley unit is installed in the second mounting case.
As a further improvement of the technology, for the first pulley unit and the second pulley unit, one end of the limiting pressing bar is supported and swung by two symmetrically distributed pressing bars and installed in the corresponding installation shell; the two pressing strips are supported and fixedly arranged in the corresponding mounting shells; the two ends of the plate spring are respectively arranged on the limiting pressing strip and the corresponding pressing strip support.
For the third pulley unit, one ends of the two limiting pressing strips are supported and arranged in the second mounting shell in a swinging mode through the two symmetrically distributed pressing strips; the two pressing strips are supported and fixedly arranged in the second mounting shell; two ends of the two plate springs are respectively arranged on the corresponding limiting pressing strips and the two pressing strip supports.
As a further improvement of the technology, the middle of the hinged end of the limiting pressing bar is provided with a notch.
As a further improvement of the technology, a plurality of centrifugal grooves are uniformly formed in the peripheral direction of the centrifugal wheel, the centrifugal blocks are slidably mounted in the centrifugal grooves, and one end of each centrifugal spring is fixedly mounted on the corresponding centrifugal block and the inner end face of the corresponding centrifugal groove.
As a further improvement of the technology, the limiting pressing strip is divided into an extrusion section and an arc section, and the tail end of the extrusion section is connected with the initial section of the arc section; the hinged end of the limiting pressing bar is located at the starting section end of the extrusion section, and the distance between the arc-shaped section from the tail end to the starting end and the corresponding pulley is gradually reduced.
As a further improvement of the present technology, the first pulley unit, the second pulley unit, and the third pulley unit each have one pinch roller mechanism.
The pinch roller mechanism comprises pinch roller supports, a sliding block, a pinch roller, an extrusion spring and a third mounting shell, wherein the third mounting shell is fixedly mounted in the corresponding mounting shell through the pinch roller supports; the pinch roller is in extrusion fit with the steel wire rope passing through the corresponding pulley.
The extrusion spring is a compression spring and has pre-pressure.
For traditional hydraulic pressure technique, the utility model discloses a beneficial effect as follows:
1. the utility model discloses in the lifting hook of design, if certain wire rope fracture back in the use, under the action of gravity of lifting hook mechanism and lifting sling thing, cracked wire rope will slide, trigger the spacing layering in corresponding the pulley unit through sliding, make the winding at pulley unit in the wire rope of pulley on by spacing, prevented lifting hook mechanism's continuation whereabouts to a certain extent, protected following people and property.
2. The utility model discloses in the lifting hook of design, if the wire rope fracture between third pulley unit and the winding drive wheel and by spacing back, when wanting to take off lifting hook mechanism, at first adorn stand-by motor on the crossbeam for first pivot is connected with stand-by motor's output shaft, takes off spacing bolt from spacing pinhole and spacing round hole in, then, it is rotatory through the fixed winding wheel of stand-by motor drive, with lifting hook mechanism pull-up.
3. The utility model can compress the steel wire rope wound on the pulley in the corresponding pulley unit through the designed pressing wheel mechanism, ensure that the steel wire rope is broken and is subjected to the downward pulling force of the hook mechanism, and when the steel wire rope is released on the corresponding pulley, the steel wire rope can drive the corresponding pulley to rotate through friction; and the normal trigger limit pressing strip is ensured to compress and limit the steel wire rope in the corresponding area.
Drawings
Fig. 1 is an external view of an entire part.
Fig. 2 is a schematic view of the overall component distribution.
Fig. 3 is a schematic view of the drive motor, stationary winding wheel and winding drive wheel distribution.
Fig. 4 is an external view of the fixed winding wheel, the winding driving wheel, the fixed pulley mechanism and the hook mechanism.
Fig. 5 is a schematic view of the stationary winding wheel installation.
Fig. 6 is a schematic structural view of the fixed pulley mechanism.
Fig. 7 is a schematic view of the first pulley unit structure.
FIG. 8 is a schematic view of the centrifugal wheel and the limiting pressing bar.
FIG. 9 is a schematic view of a centrifugal wheel.
Fig. 10 is a schematic view of the installation of the position-limiting pressing bar in the first pulley unit.
Fig. 11 is a schematic view of the pressing wheel mechanism.
Fig. 12 is a schematic view of the hook mechanism.
Fig. 13 is a structural schematic view of a second mounting housing.
Fig. 14 is a schematic view of the second and third pulley unit distribution.
Fig. 15 is a schematic structural view of a third pulley unit.
Fig. 16 is a schematic view showing the installation of the position-limiting pressing bar in the third pulley unit.
Number designation in the figures: 1. a cross beam; 2. a drive motor; 3. a fixed pulley mechanism; 4. fixing the winding wheel; 5. a wire rope; 6. a hook mechanism; 7. winding a driving wheel; 8. supporting a motor; 9. a first rotating shaft; 10. a limiting bolt; 11. a first fixed support; 12. a second pulley unit; 13. a third pulley unit; 14. a second fixed support; 15. a limit pin hole; 16. limiting round holes; 17. a first mounting case; 18. a first pulley unit; 19. a pinch roller mechanism; 20. a centrifugal wheel; 21. a first gear; 22. limiting and pressing strips; 23. a pulley; 24. a second gear; 25. a one-way clutch; 26. a second rotating shaft; 27. a third rotating shaft; 28. the pinch roller supports; 29. a centrifugal chute; 30. a centrifugal block; 31. a centrifugal spring; 32. supporting a pressing strip; 33. a plate spring; 34. a notch; 35. an extrusion section; 36. an arc-shaped section; 37. a third mounting case; 38. a slider; 39. a pinch roller; 40. a compression spring; 41. a second mounting case; 42. hooking; 43. a separator.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples or figures are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model discloses in set for wire rope 5's winding direction to do, winding drive wheel 7 is the initiating terminal, and fixed winding wheel 4 is terminal.
As shown in fig. 1 and 2, the crane comprises a steel wire rope 5, a driving motor 2, a fixed winding wheel 4, a winding driving wheel 7, a fixed pulley mechanism 3 and a hook mechanism 6, wherein as shown in fig. 3, the driving motor 2 is installed on a cross beam 1 of a crane or a tower crane through a motor support 8, and as shown in fig. 4, the winding driving wheel 7 is fixedly installed on an output shaft of the driving motor 2; the fixed winding wheel 4 is rotatably arranged on the cross beam 1; as shown in fig. 3 and 4, the fixed pulley mechanism 3 is mounted on the beam 1, and the hook mechanism 6 is mounted on the lower side of the beam 1 via a wire rope 5. In the utility model, the winding driving wheel 7 is controlled to rotate by the driving motor 2, so as to control the release and winding of the steel wire rope 5; when the winding driving wheel 7 winds the steel wire rope 5, the hook mechanism 6 is pulled to move upwards through the transmission of the fixed pulley mechanism 3 and the pulley 23 in the hook mechanism 6; when the winding driving wheel 7 releases the steel wire rope 5, the hook mechanism 6 moves downwards under the action of self gravity through the transmission of the fixed pulley mechanism 3 and the pulley 23 in the hook mechanism 6. The utility model provides a crossbeam 1 can be the crossbeam 1 of tower crane, also can be the davit of crane.
As shown in fig. 6, the fixed pulley mechanism 3 includes a first pulley unit 18 and a first mounting case 17, wherein the first mounting case 17 is fixedly mounted on the cross beam 1, and the first pulley unit 18 is mounted in the first mounting case 17.
As shown in fig. 12, the hook mechanism 6 includes a second pulley unit 12, a third pulley unit 13, and a second mounting case 41, wherein a hook 42 is mounted at a lower end of the second mounting case 41; the second pulley unit 12 and the third pulley unit 13 are mounted in parallel in the second mounting case 41.
The first pulley unit 18, the second pulley unit 12, and the third pulley unit 13 each have a pulley 23.
As shown in fig. 2, the wire 5 to which the hook mechanism 6 is attached is fixedly attached to the fixed winding wheel 4 by one end thereof being fixed to the winding drive wheel 7 and by the other end thereof passing through the pulley 23 of the third pulley unit 13, the first pulley unit 18, and the second pulley unit 12 in this order.
As shown in fig. 7 and 8, the first pulley unit 18 includes a centrifugal wheel 20, a limiting bead 22, a pulley 23, a second rotating shaft 26, a plate spring 33, and a third rotating shaft 27, wherein the second rotating shaft 26 and the third rotating shaft 27 are respectively rotatably mounted in the first mounting case 17; the pulley 23 is fixedly arranged at one end of the third rotating shaft 27, and the centrifugal wheel 20 is fixedly arranged at one end of the first rotating shaft 9; the pulley 23 is in one-way transmission connection with the centrifugal wheel 20 through a gear; the limiting pressing strip 22 is arranged in the first mounting shell 17 in a swinging mode, and a plate spring 33 is arranged between the limiting pressing strip 22 and the first mounting shell 17; the limiting pressing strip 22 is matched with a steel wire passing through the pulley 23; as shown in fig. 9, a plurality of centrifugal blocks 30 are uniformly arranged in the centrifugal wheel 20 in the circumferential direction, and a centrifugal spring 31 is respectively arranged between each centrifugal block 30 and the centrifugal wheel 20; the centrifugal block 30 is matched with the limiting pressing bar 22.
In the utility model, when the pulley 23 rotates rapidly under the action of the steel wire rope 5, the pulley 23 can drive the third rotating shaft 27 to rotate, the third rotating shaft 27 rotates to drive the second gear 24 to rotate, the second gear 24 rotates to drive the first gear 21 to rotate, the first gear 21 rotates to drive the second rotating shaft 26 to rotate through the one-way clutch 25, the second rotating shaft 26 rotates to drive the centrifugal wheel 20 to rotate, the centrifugal wheel 20 rotates to enable the centrifugal block 30 mounted on the centrifugal wheel 20 to slide outside the centrifugal wheel 20 under the action of centrifugal force, and the centrifugal spring 31 is pulled; in the utility model, after the centrifugal block 30 sliding to the outside contacts with the extrusion section 35 on the corresponding limiting pressing strip 22 in the rotating process, the centrifugal block 30 will extrude the limiting pressing strip 22 to swing towards one side of the pulley 23, and contact with the steel wire rope 5 on the pulley 23, and extrude the steel wire rope 5, and generate resistance to the steel wire rope 5, and the steel wire rope 5 can make the limiting pressing strip 22 press tighter along with the movement of the steel wire rope 5 in the moving direction, when the initial state of the limiting pressing strip 22 is not in operation, the angle formed by the connecting line of the swinging point of the limiting pressing strip 22 and the axle center of the pulley 23 and the extrusion section 35 of the limiting pressing strip 22 is less than 30 degrees, and the design of the angle can ensure that the limiting pressing strip 22 is self-locked and; the angles in the drawings are only schematic.
In the utility model, when the limiting pressing strip 22 is not extruded, a gap is formed between the limiting pressing strip 22 and the steel wire rope 5 wound on the corresponding pulley 23 under the action of the plate spring 33, so that the normal work of the steel wire rope 5 can be ensured; and the distance between the arc-shaped section 36 on the limiting pressing bar 22 and the wire rope 5 on the pulley 23 from the tail end to the starting end is gradually reduced.
The utility model discloses in normal use, in order to guarantee the security, wire rope 5's release is all comparatively slow with the winding, and wire rope 5 driving pulley 23's rotation rate is slower, and centrifugal wheel 20's centrifugal force is less relatively, so centrifugal force that centrifugal piece 30 receives under this condition is not enough to make its roll-off centrifugal wheel 20 outside, produces the extrusion to spacing layering 22, influences wire rope 5's normal release and winding.
As shown in fig. 14, the second pulley unit 12 includes a centrifugal wheel 20, a limiting bead 22, a pulley 23, a second rotating shaft 26, a plate spring 33, and a third rotating shaft 27, wherein the centrifugal wheel 20, the limiting bead 22, the pulley 23, the second rotating shaft 26, the plate spring 33, and the third rotating shaft 27 are identical in structure to the centrifugal wheel 20, the limiting bead 22, the pulley 23, the second rotating shaft 26, the plate spring 33, and the third rotating shaft 27 in the first pulley unit 18, and the installation relationship of the centrifugal wheel 20, the limiting bead 22, the pulley 23, the second rotating shaft 26, the plate spring 33, and the third rotating shaft 27 in the second mounting case 41 is identical to the installation relationship of the centrifugal wheel 20, the limiting bead 22, the pulley 23, the second rotating shaft 26, the plate spring 33, and the third rotating shaft 27 in the first mounting case 17 in the first pulley unit 18.
As shown in fig. 15, the third pulley unit 13 includes a centrifugal wheel 20, a limiting bead 22, a pulley 23, a second rotating shaft 26, a plate spring 33, and a third rotating shaft 27, wherein the centrifugal wheel 20, the limiting bead 22, the pulley 23, the second rotating shaft 26, the plate spring 33, and the third rotating shaft 27 are identical to the centrifugal wheel 20, the limiting bead 22, the pulley 23, the second rotating shaft 26, the plate spring 33, and the third rotating shaft 27 in the first pulley unit 18 in structure; the second rotating shaft 26 and the third rotating shaft 27 are respectively rotatably mounted in the second mounting case 41; the pulley 23 is fixedly arranged at one end of the third rotating shaft 27, and the centrifugal wheel 20 is fixedly arranged at one end of the first rotating shaft 9; the pulley 23 is in transmission connection with the centrifugal wheel 20 through a gear; as shown in fig. 16, two limiting pressing strips 22 are installed in the first installation shell 17 in a swinging manner, and the two limiting pressing strips 22 are located on two sides of a central connecting line of the centrifugal wheel 20 and the pulley 23; a plate spring 33 is respectively arranged between the two limiting pressing strips 22 and the first mounting shell 17; two limiting pressure strips 22 are matched with the steel wires passing through the pulleys 23.
For the third pulley unit 13, the rotation of the first gear 21 directly drives the second shaft 26 to rotate.
The steel wire rope 5 provided with the lifting hook mechanism 6 takes the winding driving wheel 7 as a starting end, and the steel wire rope 5 is wound on the first pulley unit 18 and the second pulley unit 12 and enters from the non-swinging end of the corresponding limiting pressing strip 22; the reason for this design is to ensure that after the steel wire rope 5 behind the pulley 23 unit is broken, the steel wire rope 5 in front of the broken point can make the corresponding limiting pressing strip 22 limit the steel wire rope 5 wound on the pulley 23 when the pulley 23 in the pulley 23 unit is driven to rotate.
The utility model discloses in the effect of one way clutch 25 of design among first pulley unit 18 and the second pulley unit 12 be, after the fracture of the preceding wire rope 5 of first pulley unit 18 and second pulley unit 12, wire rope 5 behind the breakpoint drives pulley 23 in the corresponding pulley 23 unit under the action of gravity of lifting hook mechanism 6 and the thing of playing and rotates, this pulley 23 can not drive corresponding centrifugal wheel 20 through corresponding first gear 21 and second gear 24 and rotate, can not make spacing layering 22 pressure swing in this pulley 23 unit promptly, it is spacing to the wire rope 5 behind the breakpoint, influence the preceding slip of wire rope 5 through lifting hook mechanism 6 of breakpoint, make the preceding originally should be by spacing wire rope 5 can not normally spacing.
As shown in fig. 5, a limit bolt 10 for limiting the rotation of the fixed winding wheel 4 is detachably mounted on the cross beam 1.
As shown in fig. 4 and 5, the beam 1 is provided with a second fixed support 14 for supporting the winding driving wheel 7; the first fixed support 11 is arranged on the cross beam 1, the first rotating shaft 9 is rotatably arranged on the first fixed support 11, and the fixed winding wheel 4 is fixedly arranged at one end of the first rotating shaft 9; the other end of the first rotating shaft 9 is provided with a plug which can be connected with a motor. The utility model discloses the middle plug can be used to be connected with stand-by motor's output shaft.
As shown in fig. 5, the first fixed support 11 is provided with a limit pin hole 15, and the fixed winding wheel 4 is provided with a limit round hole 16; the limit bolt 10 is matched with the limit pin hole 15 and the limit round hole 16.
When the limiting fixed winding wheel 4 is required to rotate, the limiting bolt 10 is inserted into the limiting pin hole 15 and the limiting round hole 16, the fixed winding wheel 4 is connected with the first fixed support 11 through the limiting bolt 10, and the first fixed support 11 is limited to the fixed winding wheel 4. When the winding wheel 4 needs to be fixed to rotate, the limiting bolt 10 is taken down from the limiting pin hole 15 and the limiting round hole 16.
As shown in fig. 7, with respect to the first pulley unit 18 and the second pulley unit 12 described above, the other end of the third rotation shaft 27 is fixedly mounted with the second gear 24; the first gear 21 is mounted on the other end of the second rotating shaft 26 through a one-way clutch 25, and the first gear 21 is engaged with the second gear 24.
As shown in fig. 15, the second gear 24 is fixedly mounted to the other end of the third rotation shaft 27 of the third pulley unit 13; the first gear 21 is installed at the other end of the second rotating shaft 26, and the first gear 21 is engaged with the second gear 24.
As shown in fig. 13, a partition plate 43 for separating the second pulley unit 12 from the third pulley unit 13 is mounted in the second mounting case 41.
As shown in fig. 6 and 10, for the first pulley unit 18 and the second pulley unit 12, one end of the limiting pressing bar 22 is installed in the corresponding installation shell in a swinging manner through two symmetrically distributed pressing bar supports 32; the two pressing bar supports 32 are fixedly arranged in the corresponding mounting shells; the two ends of the plate spring 33 are respectively arranged on the limiting pressing strip 22 and the corresponding pressing strip support 32.
As shown in fig. 12, 15 and 16, for the third pulley unit 13, one end of each of the two limiting pressing strips 22 is installed in the second installation shell 41 in a swinging manner through two symmetrically distributed pressing strip supports 32; the two pressing bar supports 32 are fixedly arranged in the second mounting shell 41; two ends of the two plate springs 33 are respectively arranged on the corresponding limiting pressing strip 22 and the two pressing strip supports 32. The plate spring 33 plays a role in positioning and supporting the limiting pressing strip 22 when not pressed on one hand, and on the other hand, after the limiting pressing strip 22 is pressed and swings, and a lifted object completely falls to the ground, the self-locking pressing of the steel wire rope 5 contacting the limiting pressing strip 22 is adjusted, and finally the plate spring 33 plays a role in resetting the limiting pressing strip 22.
As shown in fig. 10 and 16, the middle of the hinged end of the limiting pressing bar 22 is provided with a notch 34. The designed gap 34 can reduce the amount of movement of the centrifugal block 30 which is extruded and moved back by the limiting pressing strip 22 after the centrifugal block 30 is extruded on the limiting pressing strip 22 in the rotating process, thereby reducing the resistance to the movement back and reducing the friction loss of the centrifugal block 30.
As shown in fig. 9, the centrifugal wheel 20 is provided with a plurality of centrifugal slots uniformly along the circumferential direction, the centrifugal blocks 30 are slidably mounted in the centrifugal slots, and one end of the centrifugal spring 31 is fixedly mounted on the corresponding centrifugal block 30 and the inner end surface of the corresponding centrifugal slot.
As shown in fig. 10, the limiting pressing bar 22 is divided into two parts, namely an extrusion section 35 and an arc section 36, wherein the tail end of the extrusion section 35 is connected with the initial section of the arc section 36; the hinged end of the limiting pressing bar 22 is positioned at the initial section end of the extrusion section 35, and the distance between the arc-shaped section 36 and the corresponding pulley 23 from the tail end to the initial end is gradually reduced.
As shown in fig. 7 and 14, the first pulley unit 18, the second pulley unit 12, and the third pulley unit 13 each include a pressing mechanism 19.
As shown in fig. 11, the pinch roller mechanism 19 includes a pinch roller support 28, a slider 38, a pinch roller 39, an extrusion spring 40, and a third mounting shell 37, wherein the third mounting shell 37 is fixedly mounted in the corresponding mounting shell through the pinch roller support 28, the slider 38 is slidably mounted in the third mounting shell 37, the extrusion spring 40 is mounted between one end of the slider 38 located in the third mounting shell 37 and the inner end surface of the third mounting shell 37, and the pinch roller 39 is rotatably mounted on the slider 38 and located outside the third mounting shell 37; the pinch roller 39 is in press fit with the wire rope 5 passing over the corresponding pulley 23.
The pressing spring 40 is a compression spring and has a pre-pressure.
The utility model discloses a pinch roller mechanism 19 of design can play the effect of compressing tightly to the wire rope 5 of winding on pulley 23 in the corresponding pulley 23 unit, guarantees that wire rope 5 is at the fracture, receives the downward pulling force of lifting hook mechanism 6, and when releasing on corresponding pulley 23, wire rope 5 can be through the rotatory pulley 23 that friction drive corresponds; and the normal pressing and limiting of the steel wire rope 5 in the corresponding area by the trigger limiting pressing strip 22 is ensured.
After the steel wire rope 5 connected between the fixed winding wheel 4 and the second pulley unit 12 is broken, under the action of the lifting hook mechanism 6 and the gravity of the lifted object, the steel wire rope 5 behind the broken point can drive the pulleys 23 in the three pulley 23 units to rotate, so as to drive the three centrifugal wheels 20 to rotate, and the centrifugal forces applied to the three centrifugal wheels 20 are equal, but the elastic coefficient of the centrifugal spring 31 in the centrifugal wheel 20 in the first pulley unit 18 is smaller than the elastic coefficient of the centrifugal spring 31 in the centrifugal wheel 20 in the third pulley unit 13; the spring constant of the centrifugal spring 31 in the centrifugal wheel 20 in the second sheave unit 12 is smaller than the spring constant of the centrifugal spring 31 in the centrifugal wheel 20 in the first sheave unit 18; therefore, the centrifugal block 30 in the centrifugal wheel 20 in the second pulley unit 12 moves out of the centrifugal wheel 20 under the action of centrifugal force, and presses the corresponding limiting pressing strip 22, so that the steel wire rope 5 wound on the pulley 23 in the second pulley unit 12 is limited at first, and the hook mechanism 6 stops falling; thus, the friction loss of the other two limiting pressing strips 22 can be reduced; similarly, when the wire rope 5 between the second pulley unit 12 and the first pulley unit 18 is broken, the limiting pressing strip 22 in the first pulley unit 18 can preferentially limit the wire rope 5 in the corresponding region relative to the limiting pressing strip 22 in the second pulley unit 12, so as to reduce the friction loss of the limiting pressing strip 22 in the second pulley unit 12.
The specific working process is as follows: when using the utility model discloses a during the lifting hook, in normal use, through the work of control driving motor 2, control winding drive wheel 7 is rotatory, and then control wire rope 5's winding and release, and 6 rising or decline of lifting hook mechanism through wire rope 5 winding and release pulling downside.
In the using process, if the steel wire rope 5 between the fixed winding wheel 4 and the second pulley unit 12 is broken, under the action of the lifting hook mechanism 6 and the gravity of a lifted object, the steel wire rope 5 in front of the broken point slides, and then the limiting pressing strip 22 in the second pulley unit 12 is triggered at first, so that the steel wire rope 5 wound on the pulley 23 in the second pulley unit 12 is limited, the continuous falling of the lifting hook mechanism 6 is prevented to a certain extent, and people and property below are protected.
If the steel wire rope 5 between the second pulley unit 12 and the first pulley unit 18 is broken, under the action of the lifting hook mechanism 6 and the gravity of a lifted object, the steel wire rope 5 in front of the broken point slides, and then the limiting pressing strip 22 in the first pulley unit 18 is triggered at first, so that the steel wire rope 5 wound on the pulley 23 in the first pulley unit 18 is limited, the lifting hook mechanism 6 is prevented from continuously falling to a certain extent, and people and property below are protected; in the process, the centrifugal wheel 20 in the second pulley unit 12 is not driven to rotate by the one-way clutch 25, i.e. the slipping of the wire rope 5 is not affected.
If the steel wire rope 5 between the first pulley unit 18 and the third pulley unit 13 is broken, under the action of the lifting hook mechanism 6 and the gravity of the lifted object, the steel wire rope 5 in front of the broken point slides, the steel wire rope 5 slides to trigger one limiting pressing strip 22 in the third pulley unit 13, so that the steel wire rope 5 wound on a pulley 23 in the third pulley unit 13 is limited, the lifting hook mechanism 6 is prevented from continuously falling to a certain extent, and people and property below are protected.
If the steel wire rope 5 between the third pulley unit 13 and the winding driving wheel 7 is broken, under the action of the lifting hook mechanism 6 and the gravity of the lifted object, the steel wire rope 5 behind the broken point slides, and the steel wire rope 5 triggers another limiting pressing strip 22 in the third pulley unit 13, so that the steel wire rope 5 wound on a pulley 23 in the third pulley unit 13 is limited, the lifting hook mechanism 6 is prevented from continuously falling to a certain extent, and people and property below are protected; in the process, the centrifugal wheel 20 in the second pulley unit 12 and the first pulley unit 18 is not driven to rotate by the one-way clutch 25, i.e., the slip of the wire rope 5 is not affected.
The utility model discloses in if wire rope 5 fracture between fixed winding wheel 4 and the second pulley unit 12, wire rope 5 fracture between first pulley unit 18 and the third pulley unit 13, if want to take off lifting hook mechanism 6, only need through driving motor 2 control winding drive wheel 7 rotatory with lifting hook mechanism 6 rubbish can.
If the steel wire rope 5 between the third pulley unit 13 and the winding driving wheel 7 is broken, and the hook mechanism 6 is taken down, firstly, the standby motor is arranged on the cross beam 1, so that the first rotating shaft 9 is connected with the output shaft of the standby motor, the limiting bolt 10 is taken down from the limiting pin hole 15 and the limiting round hole 16, and then the standby motor drives the fixed winding wheel 4 to rotate, so that the hook mechanism 6 is pulled up.
Claims (5)
1. The utility model provides a high building is built and is used safe lifting hook which characterized in that: the hoisting device comprises a steel wire rope, a driving motor, a fixed winding wheel, a winding driving wheel, a fixed pulley mechanism and a hook mechanism, wherein the driving motor is supported and installed on a cross beam of a crane or a tower crane through a motor, and the winding driving wheel is fixedly installed on an output shaft of the driving motor; the fixed winding wheel is rotatably arranged on the cross beam; the fixed pulley mechanism is arranged on the cross beam, and the lifting hook mechanism is arranged on the lower side of the cross beam through a steel wire rope;
the fixed pulley mechanism comprises a first pulley unit and a first mounting shell, wherein the first mounting shell is fixedly mounted on the cross beam, and the first pulley unit is mounted in the first mounting shell;
the lifting hook mechanism comprises a second pulley unit, a third pulley unit and a second mounting shell, wherein the lower end of the second mounting shell is provided with a hook; the second pulley unit and the third pulley unit are arranged in parallel in the second mounting shell;
pulleys are arranged in the first pulley unit, the second pulley unit and the third pulley unit;
one end of the steel wire rope provided with the lifting hook mechanism is fixedly arranged on the winding driving wheel, and the other end of the steel wire rope passes through the pulleys in the third pulley unit, the first pulley unit and the second pulley unit in sequence and is fixedly arranged on the fixed winding wheel;
the first pulley unit comprises a centrifugal wheel, a limiting pressing strip, a pulley, a second rotating shaft, a plate spring and a third rotating shaft, wherein the second rotating shaft and the third rotating shaft are respectively rotatably arranged in the first mounting shell; the pulley is fixedly arranged at one end of the third rotating shaft, and the centrifugal wheel is fixedly arranged at one end of the first rotating shaft; the pulley and the centrifugal wheel are in one-way transmission connection through a gear; the limiting pressing strip is arranged in the first mounting shell in a swinging mode, and a plate spring is arranged between the limiting pressing strip and the first mounting shell; the limiting pressing bar is matched with a steel wire passing through the pulley; a plurality of centrifugal blocks are uniformly arranged in the centrifugal wheel in the circumferential direction, and a centrifugal spring is respectively arranged between each centrifugal block and the centrifugal wheel; the centrifugal block is matched with the limiting pressing bar;
the second pulley unit comprises a centrifugal wheel, a limiting pressing strip, a pulley, a second rotating shaft, a plate spring and a third rotating shaft, wherein the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft are completely the same as the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft in the first pulley unit in structure, and the installation relationship of the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft in the second installation shell is completely the same as the installation relationship of the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft in the first installation shell in the first pulley unit;
the third pulley unit comprises a centrifugal wheel, a limiting pressing strip, a pulley, a second rotating shaft, a plate spring and a third rotating shaft, wherein the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft have the same structure as the centrifugal wheel, the limiting pressing strip, the pulley, the second rotating shaft, the plate spring and the third rotating shaft in the first pulley unit; the second rotating shaft and the third rotating shaft are respectively rotatably arranged in the second mounting shell; the pulley is fixedly arranged at one end of the third rotating shaft, and the centrifugal wheel is fixedly arranged at one end of the first rotating shaft; the pulley and the centrifugal wheel are in transmission connection through a gear; the two limiting pressing strips are arranged in the first mounting shell in a swinging mode and are positioned on two sides of a central connecting line of the centrifugal wheel and the pulley; a plate spring is respectively arranged between the two limiting pressing strips and the first mounting shell; the two limiting pressing strips are matched with the steel wire passing through the pulley;
the steel wire rope provided with the hook mechanism takes a winding driving wheel as a starting end, and the steel wire rope enters from the non-swinging end of the corresponding limiting pressing bar after being wound on the first pulley unit and the second pulley unit;
and a limiting bolt which can limit the rotation of the fixed winding wheel is detachably mounted on the cross beam.
2. The safety hook for building construction according to claim 1, wherein: the beam is provided with a second fixed support which plays a role in supporting the winding driving wheel; the first fixed support is arranged on the cross beam, the first rotating shaft is rotatably arranged on the first fixed support, and the fixed winding wheel is fixedly arranged at one end of the first rotating shaft; the other end of the first rotating shaft is provided with a plug which can be connected with a motor.
3. The safety hook for building construction according to claim 2, wherein: the first fixed support is provided with a limit pin hole, and the fixed winding wheel is provided with a limit round hole; the limiting bolt is matched with the limiting pin hole and the limiting round hole.
4. The safety hook for building construction according to claim 1, wherein: for the first pulley unit and the second pulley unit, a second gear is fixedly mounted at the other end of the third rotating shaft; the first gear is arranged at the other end of the second rotating shaft through a one-way clutch and is meshed with the second gear;
for the third pulley unit, a second gear is fixedly installed at the other end of the third rotating shaft; the first gear is arranged at the other end of the second rotating shaft and is meshed with the second gear.
5. The safety hook for building construction according to claim 1, wherein: and a partition plate for isolating the second pulley unit from the third pulley unit is arranged in the second mounting shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021326422.5U CN212893557U (en) | 2020-07-08 | 2020-07-08 | Safety lifting hook for building construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021326422.5U CN212893557U (en) | 2020-07-08 | 2020-07-08 | Safety lifting hook for building construction |
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| Publication Number | Publication Date |
|---|---|
| CN212893557U true CN212893557U (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021326422.5U Active CN212893557U (en) | 2020-07-08 | 2020-07-08 | Safety lifting hook for building construction |
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| Country | Link |
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| CN (1) | CN212893557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115947250A (en) * | 2023-03-15 | 2023-04-11 | 南通润邦海洋工程装备有限公司 | Winch frame for ocean platform |
-
2020
- 2020-07-08 CN CN202021326422.5U patent/CN212893557U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115947250A (en) * | 2023-03-15 | 2023-04-11 | 南通润邦海洋工程装备有限公司 | Winch frame for ocean platform |
| CN115947250B (en) * | 2023-03-15 | 2023-12-22 | 南通润邦海洋工程装备有限公司 | Hinge frame for ocean platform |
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Effective date of registration: 20210506 Address after: 071000 Donglu village, Donglu Township, Qingyuan District, Baoding City, Hebei Province Patentee after: HEBEI SHEN LI RIGGING GROUP Co.,Ltd. Address before: 215553 No.3 gangjing Road, yangyuandong, Xinzhuang Town, Changshu City, Suzhou City, Jiangsu Province Patentee before: CHANGSHU GAOTONG INTELLIGENT EQUIPMENT Co.,Ltd. |