CN112093680A

CN112093680A - Grabbing device of tower crane

Info

Publication number: CN112093680A
Application number: CN202011235423.3A
Authority: CN
Inventors: 李培峨
Original assignee: Yantai Special Equipment Inspection Institute
Current assignee: Yantai Special Equipment Inspection Institute
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2020-12-18

Abstract

The invention discloses a grabbing device of a tower crane, which comprises a box body, wherein a mounting plate is fixedly connected inside the box body, the lower end of the box body is connected with a lifting block in a sliding manner, a bracket is fixedly connected outside the box body, a box door is hinged to the upper end of the box body, a rope hole is formed in the upper end of the box door, a buzzer box is fixedly connected to the upper end of the box door, a first warning lamp is fixedly connected to the upper end of the buzzer box, a connecting block is fixedly connected inside the lower end of the lifting block, the connecting block and the lifting block are of an integrated structure, a wheel carrier is welded to the upper end of the mounting plate, a first pulley is rotatably connected to the upper end of the wheel carrier, a steel rope is slidably connected to the outer side of the first pulley, and a tensioning hole is formed in the upper end of, Can effectively warn ground workers and prevent the steel rope from slipping.

Description

Grabbing device of tower crane

Technical Field

The invention belongs to the technical field of tower crane accessories, and particularly relates to a grabbing device of a tower crane.

Background

The tower crane (tower crane) tip has the function of bearing the upper load transmitted by the boom guy rope and the balance arm guy rope, and directly transmits the upper load to the tower body structure through the rotary tower, the rotary table, the bearing seat and other structural components. The self-elevating tower top is provided with a truncated cone column type, a forward-inclined or backward-inclined truncated cone column type, a herringbone frame type and an inclined support frame type. The upper slewing tower crane is required to be provided with a balance weight, and the function of the upper slewing tower crane is to support the balance weight so as to form a balance moment which is required by design and has the action direction opposite to the lifting moment direction. In addition to the counterweight, a hoisting mechanism is often provided at the tail. The hoisting mechanism and the balance weight are arranged at the tail end of the balance arm together, so that partial balance weight function can be achieved, and the distance between the rope reel and the tower tip guide wheel is increased, so that the steel wire rope can be conveniently wound and rope disorder is avoided. The dosage of the balance weight is in inverse proportion to the length of the balance arm, and the length of the balance arm is in proportion to the length of the crane boom. The balance weight is considerable, the light tower crane generally needs 3-4 t at least, and the heavy tower crane needs 30t nearly.

However, the existing grabbing device of the tower crane has some problems: 1. when grabbing small articles, ground personnel often bind the small articles for a long time in order to prevent the small articles from falling off in the hoisting process, so that the working efficiency is low; 2. when the device is used at night, dead corners can occur when ground personnel are warned due to the fact that the warning lamp is arranged above the grabbing device, and ground personnel can be easily injured; 3. when the grabbing device is lowered, the steel rope inside the grabbing device is easy to slip. Therefore, a grabbing device of the tower crane needs to be designed.

The invention content is as follows:

the object of the present invention is to solve the above problems by providing a gripping device for a tower crane, which solves the problems mentioned in the background art.

In order to solve the above problems, the present invention provides a technical solution:

a grabbing device of a tower crane comprises a box body, wherein a mounting plate is fixedly connected inside the box body, a lifting block is slidably connected at the lower end of the box body, a support is fixedly connected at the outer side of the box body, a box door is hinged at the upper end of the box body, a rope hole is formed in the upper end of the box door, a buzzer box is fixedly connected at the upper end of the box door, a first warning lamp is fixedly connected at the upper end of the buzzer box, a connecting block is fixedly connected at the inner part of the lower end of the lifting block, the connecting block and the lifting block are of an integral structure, a wheel carrier is welded at the upper end of the mounting plate, a first pulley is rotatably connected at the upper end of the wheel carrier, a steel rope is slidably connected at the outer side of the first pulley, a tensioning hole is formed in the upper end of the mounting plate, a wheel rod is slidably connected, the outside of wheel pole just is located the top fixedly connected with separation blade of mounting panel, the lower extreme of separation blade with the upper end contact of spring one is connected, the upper end of wheel pole is rotated and is connected with pulley two, the upper end of pulley two with the lower extreme sliding connection of steel cable, the lower extreme of wheel pole has screw rod one through threaded connection, the inside lower extreme fixedly connected with of box increases the frame, the upper end fixedly connected with self-locking motor who increases the frame, the equal fixedly connected with warning light two of outer wall of the box left and right sides, the outside of box and the top welding that is located warning light two have the protection shield, the lower extreme of protection shield is provided with anti-light face.

Preferably, the number of the brackets is two, and the two brackets are symmetrically distributed on the left side and the right side of the box body.

As preferred, the upper end welding of elevator has the rack, the fixed uide bushing that has cup jointed in inside of mounting panel, the upper end fixedly connected with guide bar of elevator, the outside of guide bar with the inboard sliding connection of uide bushing, run through on the mounting panel and seted up the through-hole, the rack is in the inside of through-hole is passed, the lower extreme fixed connection servo motor of mounting panel, the terminal fixedly connected with gear of servo motor output shaft is one, the right-hand member of gear one with the left end meshing of rack.

Preferably, the inside of the support is rotatably connected with a rotating shaft, the outer sides of the front end and the rear end of the rotating shaft are fixedly connected with driving arms, teeth are arranged at the upper ends of the driving arms, the number of the self-locking motors is four, the four self-locking motors are distributed in a matrix shape at four corners of the lower end inside the box body, the tail ends of output shafts of the self-locking motors are fixedly connected with a second gear, the outer sides of the second gear are meshed with the outer sides of the driving arms, driving holes are formed in the side wall of the box body, one side of each driving arm is fixedly connected with a first anti-skid block, a transverse plate is fixedly connected between the lower ends of the two driving arms on the same rotating shaft, reinforcing ribs are welded at the lower ends of the driving arms.

Preferably, a pillar is welded to the upper end of the buzzer box, and a protective frame is welded to the outer side of the pillar.

As preferred, the inside of connecting block is rotated and is connected with the lifting hook, the inside lower extreme fixedly connected with fixed block of connecting block, the lower extreme sliding connection of connecting block has screw rod two, there is screw rod two the inside of fixed block through threaded connection, the fixed slot has been seted up to the lower extreme of lifting hook, the inside sliding connection of fixed slot has from the locking lever, from the outside fixedly connected with dog of locking lever, from the outside sliding connection of locking lever has spring two, spring two the left end with the internal contact of fixed slot is connected, spring two the right-hand member with the left end fixed connection of dog, there is screw rod three from the left end of locking lever through threaded connection, the quantity of screw rod three is two, two screw rod three is in from the upper and lower both ends evenly distributed of locking lever.

Preferably, the number of the rope holes is two, and the two rope holes are uniformly distributed at the upper end of the box door.

Preferably, the outer side of the guide rod is fixedly connected with a limiting piece below the guide sleeve, and the limiting piece and the guide rod are of an integrated structure.

Preferably, the number of the first screw rods is two, and the two first screw rods are symmetrically distributed at the lower ends of the left side and the right side of the wheel rod.

The invention has the beneficial effects that: the invention relates to a grabbing device of a tower crane, which has the characteristics of quickly grabbing small objects, effectively warning ground workers and preventing steel ropes from slipping, and has the following two beneficial effects compared with the traditional grabbing device of the tower crane in specific use:

firstly, the driving arm is driven to rotate by the self-locking motor, so that when small articles can be transported, excessive binding is not needed, a lot of manpower can be saved, and the working efficiency is accelerated;

secondly, the structures such as a wheel rod, a pulley II, a spring and the like are additionally arranged in the box body, so that the steel rope is tensioned in the box body, the steel rope is prevented from slipping in the box body, and the warning lamps on the side surfaces are respectively additionally arranged on the left side and the right side of the box body, so that the phenomenon that ground workers touch the steel rope can be avoided when the steel rope is used at night.

Description of the drawings:

for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a right side view of FIG. 1 of the present invention;

FIG. 3 is a left side view of the case of FIG. 1 of the present invention;

FIG. 4 is a top view of the case of FIG. 1 of the present invention;

FIG. 5 is an enlarged view of the portion A of FIG. 1 according to the present invention;

fig. 6 is an enlarged view of the structure of part B of fig. 1 according to the present invention.

In the figure: 1. a box body; 2. mounting a plate; 3. a lifting block; 4. a support; 5. a buzzer box; 6. a first warning light; 7. connecting blocks; 8. a box door; 21. a wheel carrier; 22. a first pulley; 23. a steel cord; 24. a wheel lever; 25. a first spring; 26. a baffle plate; 27. tensioning the hole; 28. a first screw rod; 29. a second pulley; 31. a rack; 32. a guide sleeve; 33. a guide bar; 34. a limiting sheet; 35. a through hole; 36. a first gear; 37. a servo motor; 41. a rotating shaft; 42. a drive arm; 43. a second gear; 44. a drive aperture; 45. a first anti-skid block; 46. reinforcing ribs; 47. a transverse plate; 48. a second anti-skid block; 49. a self-locking motor; 40. heightening the frame; 61. a pillar; 62. a protection frame; 63. a second warning light; 64. a protection plate; 71. a hook; 72. a fixed block; 73. a second screw; 74. fixing grooves; 75. a self-locking lever; 76. a stopper; 77. a second spring; 78. a third screw; 81. and (4) rope holes.

The specific implementation mode is as follows:

as shown in fig. 1 to 6, the following technical solutions are adopted in the present embodiment:

example (b):

a grabbing device of a tower crane comprises a box body 1, wherein a mounting plate 2 is fixedly connected inside the box body 1, a lifting block 3 is connected at the lower end of the box body 1 in a sliding manner, a bracket 4 is fixedly connected outside the box body 1, a box door 8 is hinged at the upper end of the box body 1, a rope hole 81 is formed in the upper end of the box door 8, a buzzer 5 is fixedly connected at the upper end of the box door 8, a warning lamp I6 is fixedly connected at the upper end of the buzzer 5, a connecting block 7 is fixedly connected inside the lower end of the lifting block 3, the connecting block 7 and the lifting block 3 are of an integrated structure, a wheel carrier 21 is welded at the upper end of the mounting plate 2, a pulley I22 is rotatably connected at the upper end of the wheel carrier 21, a steel rope 23 is slidably connected outside the pulley I22, a tensioning hole 27 is formed in the upper end of the mounting, a first spring 25 is connected to the outer side of the wheel rod 24 in a sliding manner, the lower end of the first spring 25 is connected with the upper end of the mounting plate 2 in a contact manner, a blocking piece 26 is fixedly connected to the outer side of the wheel rod 24 and above the mounting plate 2, the lower end of the blocking piece 26 is in contact connection with the upper end of the first spring 25, the upper end of the wheel rod 24 is rotatably connected with a second pulley 29, the upper end of the second pulley 29 is slidably connected with the lower end of the steel cable 23, the lower end of the wheel rod 24 is connected with a first screw 28 through threads, the lower end in the box body 1 is fixedly connected with a heightening frame 40, the upper end of the heightening frame 40 is fixedly connected with a self-locking motor 49, the outer walls of the left side and the right side of the box body 1 are fixedly connected with a second warning lamp 63, a protection plate 64 is welded on the outer side of the box body 1 and above the second warning lamp 63, and a light reflecting surface is arranged at the lower end of the protection plate 64.

The number of the brackets 4 is two, and the two brackets 4 are symmetrically distributed on the left side and the right side of the box body 1.

Wherein, the upper end welding of elevator 3 has rack 31, the fixed uide bushing 32 that has cup jointed in inside of mounting panel 2, the upper end fixedly connected with guide bar 33 of elevator 3, the outside of guide bar 33 with the inboard sliding connection of uide bushing 32, through-hole 35 has been seted up in running through on the mounting panel 2, rack 31 is in the inside of through-hole 35 is passed, the lower extreme fixed connection servo motor 37 of mounting panel 2, the terminal fixedly connected with gear 36 of servo motor 37 output shaft, the right-hand member of gear 36 with the left end meshing of rack 31.

Wherein, the inside of the bracket 4 is rotatably connected with a rotating shaft 41, the outer sides of the front and the back ends of the rotating shaft 41 are fixedly connected with a driving arm 42, the upper end of the driving arm 42 is provided with teeth, the number of the self-locking motors 49 is four, four self-locking motors 49 are distributed at four corners of the lower end in the box body 1 in a matrix shape, the tail end of the output shaft of the self-locking motor 49 is fixedly connected with a second gear 43, the outer side of the second gear 43 is meshed with the outer side of the driving arm 42, a driving hole 44 is formed on the side wall of the box body 1, an anti-skid block I45 is fixedly connected to one side of each driving arm 42, a transverse plate 47 is fixedly connected between the lower ends of the two driving arms 42 on the same rotating shaft 41, a reinforcing rib 46 is welded at the lower end of the driving arm 42, the lower end of the reinforcing rib 46 is welded with the upper end of the transverse plate 47, and a second anti-skid block 48 is fixedly connected at the upper end of the transverse plate 47.

The upper end of the buzzer box 5 is welded with a support post 61, and the outer side of the support post 61 is welded with a protective frame 62.

Wherein the interior of the connecting block 7 is rotatably connected with a lifting hook 71, the lower end of the interior of the connecting block 7 is fixedly connected with a fixed block 72, the lower end of the connecting block 7 is connected with a second screw rod 73 in a sliding manner, the inside of the fixing block 72 is connected with the second screw rod 73 through threads, the lower end of the hook 71 is provided with a fixed groove 74, the inside of the fixed groove 74 is connected with a self-locking bar 75 in a sliding way, a stop 76 is fixedly connected to the outer side of the self-locking lever 75, a second spring 77 is slidably connected to the outer side of the self-locking lever 75, the left end of the second spring 77 is in contact connection with the inside of the fixing groove 74, the right end of the second spring 77 is fixedly connected with the left end of the stopper 76, the left end of the self-locking rod 75 is connected with three screw rods 78 through threads, the number of the three screw rods 78 is two, and the two screw rods 78 are uniformly distributed at the upper end and the lower end of the self-locking rod 75.

The number of the rope holes 81 is two, and the two rope holes 81 are uniformly distributed at the upper end of the box door 8.

Wherein, the outside of guide bar 33 just is located the below fixedly connected with spacing piece 34 of uide bushing 32, spacing piece 34 with guide bar 33 formula structure as an organic whole.

The number of the first screw rods 28 is two, and the two first screw rods 28 are symmetrically distributed at the lower ends of the left side and the right side of the wheel rod 24.

The using state of the invention is as follows: when small articles need to be lifted, the servo motor 37 drives the first gear 36 to rotate, the first gear 36 moves the lifting block 3 upwards through the rack 31 meshed with the left end, the lifting hook 71 at the lower end of the lifting block 3 also moves upwards along with the lifting hook, the loading space at the lower end of the box body 1 is enlarged, after the lifting hook 71 is folded, the four self-locking motors 49 are started, the four self-locking motors 49 drive the four second gears 43 to rotate, the four second gears 43 drive the four driving arms 42 meshed with the outer sides of the two driving arms to rotate, the four driving arms 42 rotate to drive the two transverse plates 47 to rotate, when the four driving arms 42 are all vertical to the horizontal plane, the two transverse plates 47 at the lower end of the four driving arms are butted and kept in a horizontal state, after the butting is finished, the articles are placed on the two transverse plates 47 between the four driving arms 42 and then, the first warning light 6 on the upper end of the box body 1 and the second warning light 63 on the side face work together, a reflecting face is arranged at the lower end of the protective plate 64 above the second warning light 63, light emitted by the second warning light 63 can be reflected to the ground, and can prompt workers on the ground, when the box body 1 is placed, the steel rope 23 is in a tightened state in the box body 1 due to the pressure action of the first spring 25 outside the wheel rod 24 inside the box body, and therefore slipping of the steel rope 23 in the box body 1 can be avoided.

While there have been shown and described what are at present considered to be the fundamental principles of the invention and its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a grabbing device of tower crane, includes box (1), its characterized in that: the inner part of the box body (1) is fixedly connected with a mounting plate (2), the lower end of the box body (1) is connected with a lifting block (3) in a sliding manner, the outer side of the box body (1) is fixedly connected with a support (4), the upper end of the box body (1) is hinged with a box door (8), the upper end of the box door (8) is provided with a rope hole (81), the upper end of the box door (8) is fixedly connected with a buzzer box (5), the upper end of the buzzer box (5) is fixedly connected with a warning lamp I (6), the inner part of the lower end of the lifting block (3) is fixedly connected with a connecting block (7), the connecting block (7) and the lifting block (3) are of an integrated structure, the upper end of the mounting plate (2) is welded with a wheel carrier (21), the upper end of the wheel carrier (21) is rotatably, tensioning hole (27) have been seted up to the upper end of mounting panel (2), the inside sliding connection in tensioning hole (27) has round pole (24), the outside sliding connection of round pole (24) has spring (25), the lower extreme of spring (25) with the upper end contact of mounting panel (2) is connected, the outside of round pole (24) just is located the top fixedly connected with separation blade (26) of mounting panel (2), the lower extreme of separation blade (26) with the upper end contact of spring (25) is connected, the upper end rotation of round pole (24) is connected with pulley two (29), the upper end of pulley two (29) with the lower extreme sliding connection of steel cable (23), the lower extreme of round pole (24) has screw rod one (28) through threaded connection, frame (40) is increased to the inside lower extreme fixedly connected with of box (1), the upper end fixedly connected with auto-lock motor (49) of increasing frame (40), the equal fixedly connected with warning light two (63) of outer wall of box (1) left and right sides, the outside of box (1) and the top welding that is located warning light two (63) have protection shield (64), the lower extreme of protection shield (64) is provided with the reflection of light face.

2. The grabbing device of the tower crane according to claim 1, wherein: the number of the brackets (4) is two, and the two brackets (4) are symmetrically distributed on the left side and the right side of the box body (1).

3. The grabbing device of the tower crane according to claim 1, wherein: the welding of the upper end of elevator (3) has rack (31), uide bushing (32) has been cup jointed to the inside of mounting panel (2) is fixed, the upper end fixedly connected with guide bar (33) of elevator (3), the outside of guide bar (33) with the inboard sliding connection of uide bushing (32), run through on mounting panel (2) and seted up through-hole (35), rack (31) are in the inside of through-hole (35) is passed, the lower extreme fixed connection servo motor (37) of mounting panel (2), the terminal fixedly connected with gear (36) of servo motor (37) output shaft, the right-hand member of gear (36) with the left end meshing of rack (31).

4. The grabbing device of the tower crane according to claim 1, wherein: the inner part of the support (4) is rotatably connected with a rotating shaft (41), the outer sides of the front end and the rear end of the rotating shaft (41) are fixedly connected with driving arms (42), the upper end of each driving arm (42) is provided with teeth, the number of the self-locking motors (49) is four, the four self-locking motors (49) are distributed at four corners of the inner lower end of the box body (1) in a matrix shape, the tail end of an output shaft of each self-locking motor (49) is fixedly connected with a second gear (43), the outer sides of the second gears (43) are meshed with the outer sides of the driving arms (42), the side wall of the box body (1) is provided with a driving hole (44), one side of each driving arm (42) is fixedly connected with a first anti-skid block (45), a transverse plate (47) is fixedly connected between the lower ends of the two driving arms (42) on, the lower end of the reinforcing rib (46) is welded with the upper end of the transverse plate (47), and the upper end of the transverse plate (47) is fixedly connected with a second anti-skid block (48).

5. The grabbing device of the tower crane according to claim 1, wherein: the upper end welding of buzzer case (5) has pillar (61), the outside welding of pillar (61) has fender bracket (62).

6. The grabbing device of the tower crane according to claim 1, wherein: the inside of connecting block (7) is rotated and is connected with lifting hook (71), the inside lower extreme fixedly connected with fixed block (72) of connecting block (7), the lower extreme sliding connection of connecting block (7) has screw rod two (73), the inside of fixed block (72) has screw rod two (73) through threaded connection, fixed slot (74) have been seted up to the lower extreme of lifting hook (71), the inside sliding connection of fixed slot (74) has self-locking lever (75), the outside fixed connection of self-locking lever (75) has dog (76), the outside sliding connection of self-locking lever (75) has spring two (77), the left end of spring two (77) with the internal contact of fixed slot (74) is connected, the right-hand member of spring two (77) with the left end fixed connection of dog (76), the left end of self-locking lever (75) has screw rod three (78) through threaded connection, the number of the third screw rods (78) is two, and the third screw rods (78) are uniformly distributed at the upper end and the lower end of the self-locking rod (75).

7. The grabbing device of the tower crane according to claim 1, wherein: the number of the rope holes (81) is two, and the two rope holes (81) are uniformly distributed at the upper end of the box door (8).

8. The grabbing device of a tower crane according to claim 3, wherein: the outside of guide bar (33) just is located the below fixedly connected with spacing piece (34) of uide bushing (32), spacing piece (34) with guide bar (33) formula structure as an organic whole.

9. The grabbing device of the tower crane according to claim 1, wherein: the number of the first screw rods (28) is two, and the two first screw rods (28) are symmetrically distributed at the lower ends of the left side and the right side of the wheel rod (24).