CN112239156A

CN112239156A - Tower crane lifting hook stop device

Info

Publication number: CN112239156A
Application number: CN202011214255.XA
Authority: CN
Inventors: 李伟; 张力; 周游
Original assignee: Changde Rongcheng Machinery Co ltd
Current assignee: Changde Rongcheng Machinery Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-01-19
Anticipated expiration: 2040-11-04
Also published as: CN112239156B

Abstract

The invention discloses a tower crane hook limiting device which comprises a tower crane main body and an installation frame, wherein the tower crane main body comprises a suspension arm, a moving block is installed at the bottom end of the suspension arm, a motor wheel is installed at the bottom end of the moving block, installation blocks are installed inside the installation frame, the number of the installation blocks is two, and rotating wheels are installed between the installation blocks. According to the invention, the pushing block and the inserting block are arranged, the inserting block and the pushing block which are installed on the rotating wheel are matched with each other, the steel wire rope sleeved on the rotating wheel is limited on the rotating wheel by the inserting block and the pushing block, and the top ends of the inserting block and the pushing block are arc-shaped, so that a worker can easily sleeve the steel wire rope on the rotating wheel, and the situation that the steel wire rope falls off from the rotating wheel in the use process of the crane main body is reduced.

Description

Tower crane lifting hook stop device

Technical Field

The invention relates to the technical field of tower crane transportation, in particular to a limiting device for a tower crane hook.

Background

The tower crane is the most common hoisting equipment in the construction site, also known as tower crane, and is lengthened section by section for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like. A hook is the most common type of lifting device in hoisting machinery, and is often suspended from a wire rope of a hoisting mechanism by means of a block and the like.

Most tower cranes are in the in-process that uses, and the condition that wire rope can drop from the pulley often can take place, therefore often need maintain, because wire rope's whole weight is great for maintenance duration is longer, not only greatly increased maintenance personal's work load, still great reduction the efficiency of being under construction on the building site, consequently need design a tower crane lifting hook stop device and solve above-mentioned problem.

Disclosure of Invention

Aiming at the problems, the invention aims to provide a limiting device for a tower crane lifting hook.

In order to achieve the purpose, the invention provides the following technical scheme: a tower crane hook limiting device comprises a tower crane main body and an installation frame, wherein the tower crane main body comprises a suspension arm, a moving block is arranged at the bottom end of the suspension arm, a motor wheel is arranged at the bottom end of the moving block, an installation block is arranged in the installation frame, the number of the mounting blocks is two, the rotating wheels are arranged between the mounting blocks, one side of the inner part of each rotating wheel is provided with a holding groove, the number of the accommodating grooves is two, the accommodating grooves are uniformly provided with auxiliary springs inside, the other end of one auxiliary spring is provided with an inserting block, the other end of the other auxiliary spring is provided with a pushing block, one side of the pushing block close to the inserting block is provided with an inserting groove, and insert the inside that the piece extends to the insertion groove, the installation frame internally mounted on swiveling wheel top has the extension mechanism, hoisting machine constructs is installed to the bottom of installation frame.

Preferably, the outer surface of the rotating wheel is provided with a mounting groove, and rolling shafts are mounted inside the mounting groove.

Preferably, the extension mechanism includes rotatory screw rod, the installation frame internally mounted on swiveling wheel top has rotatory screw rod, and the surface of rotatory screw rod sets up opposite direction's thread groove, the surface of rotatory screw rod cup joints and installs the cover joint piece, and the quantity that cup joints the piece is two, the pole is all installed to one side that the connecting rod was kept away from to the cover joint piece, the auxiliary wheel is all installed to the other end of installation pole, the surface of rotatory screw rod between the cover joint piece cup joints and installs first bevel gear, second bevel gear is installed in the top meshing of first bevel gear, rotatory handle is installed on the top of installation frame, and the other end of rotatory handle is connected with second bevel gear, the both sides on movable block top have all been seted up and have been run through the groove.

Preferably, the locating piece is all installed to the both sides of installation frame inner wall, the inside of locating piece all installs the rotation wheel.

Preferably, the connecting rod is all installed to the one end of cover joint piece, the slider is all installed to the other end of connecting rod, the inside one side of being close to the slider of installation frame has seted up the spout, and the one end of slider extends to the inside of spout.

Preferably, friction rollers are mounted on two sides of the top end of the through groove.

Preferably, hoisting machine constructs including the movable block, the movable block is installed to the bottom of installation frame, the couple is installed to the bottom of movable block, the second loose axle is all installed to the installation frame bottom of movable block both sides, the other end of second loose axle all installs the pole of cup jointing, cup joint the inside of pole and all install buffer spring, buffer spring keeps away from one side of second loose axle and all installs the telescopic link, cup joint the pole and keep away from one side of cup jointing the pole and all install first loose axle, the sliding block is all installed to the other end of first loose axle, the sliding tray has all been seted up to one side that the couple both sides are close to the sliding block, and the sliding block extends to the inside of sliding tray.

Preferably, the internally mounted of couple has the rotation axis, the carriage release lever is installed to the one end of rotation axis, the carriage release lever is close to one side of couple inner wall and installs the laminating piece, and the other end of laminating piece is connected with the inner wall of couple, the couple inner wall is close to one side of carriage release lever and installs supplementary piece.

Compared with the prior art, the invention has the beneficial effects that:

1. through being provided with and promoting the piece and inserting the piece, the piece and the piece of promoting of inserting of installation on the swiveling wheel are mutually supported, will cup joint the wire rope on the swiveling wheel, are inserted the piece and promote the piece restriction on the swiveling wheel, and insert the piece and promote the shape on piece top for the arc, make the staff cup joint wire rope on the swiveling wheel easily, thereby reduce the tower crane main part and can appear wire rope and follow the condition emergence that the swiveling wheel drops off at the in-process of using.

2. The extension mechanism is arranged, the handle is rotated to enable the auxiliary wheel to move in the opposite direction, and the auxiliary wheel pulls the steel wire rope to two sides, so that the steel wire rope is in a tight state in the working process, the phenomenon that a space is formed among the steel wire rope, the rotating wheel and the insertion block due to the fact that the steel wire rope is used for too long in the later use process is avoided, and the phenomenon that the risk of falling of the steel wire rope is increased is avoided; the friction roller is arranged at the corner of the through groove for the steel wire rope to pass through, so that the abrasion degree of the steel wire rope is reduced in the process that the steel wire rope passes through the through groove, and the service life of the steel wire rope is prolonged.

3. By arranging the hoisting mechanism, the telescopic rods connected with the hooks at two sides buffer the shaking of the hooks through the elastic force of the buffer springs in the shaking process of the hooks, so that the damage to the hooks in the use process is reduced, and the service life of the hooks is prolonged; through the elastic action of laminating piece for the carriage release lever laminates with supplementary piece each other, avoids the in-process that tower crane loop wheel machine main part was being carried out the hoist and mount to this, and the condition that the article can drop from the couple takes place.

Drawings

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

FIG. 2 is a schematic side sectional view of a rotor wheel according to the present invention;

FIG. 3 is a schematic top cross-sectional view of the structure of the present invention;

FIG. 4 is an enlarged view of a portion of the structure A of FIG. 1 according to the present invention;

FIG. 5 is an enlarged view of a portion of the structure shown at B in FIG. 1 according to the present invention;

fig. 6 is a partially enlarged view of the structure at C in fig. 1 according to the present invention.

In the figure: 100. a tower crane main body; 110. a suspension arm; 111. a moving block; 112. a motor wheel; 113. accommodating grooves; 114. a mounting frame; 115. mounting blocks; 116. a rotating wheel; 117. an auxiliary spring; 118. a pushing block; 119. inserting the groove; 120. inserting a block; 121. mounting grooves; 122. a roll axis; 200. an extension mechanism; 210. rotating the screw; 211. sleeving and connecting blocks; 212. a connecting rod; 213. a slider; 214. a chute; 215. mounting a rod; 216. an auxiliary wheel; 217. a first bevel gear; 218. a second bevel gear; 219. rotating the grip; 220. positioning blocks; 221. a rotating wheel; 222. a through groove; 223. rubbing the roller; 300. a hoisting mechanism; 310. a movable block; 311. hooking; 312. a sliding groove; 313. a slider; 314. a first movable shaft; 315. a telescopic rod; 316. a sleeved rod; 317. a buffer spring; 318. a second movable shaft; 319. a rotating shaft; 320. a travel bar; 321. fitting blocks; 322. and an auxiliary block.

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.

Referring to fig. 1-6, an embodiment of the present invention is shown:

a tower crane hook limiting device comprises a tower crane main body 100 and an installation frame 114, the tower crane main body 100 comprises a boom 110, a moving block 111 is installed at the bottom end of the boom 110, a motor wheel 112 is installed at the bottom end of the moving block 111, two installation blocks 115 are installed inside the installation frame 114, two installation blocks 115 are installed between the installation blocks 115, rotating wheels 116 are installed between the installation blocks 115, installation grooves 121 are formed in the outer surface of each rotating wheel 116, rolling shafts 122 are installed inside the installation grooves 121, two accommodating grooves 113 are formed in one side inside the rotating wheels 116, two accommodating grooves 113 are formed in the two accommodating grooves 113, auxiliary springs 117 are evenly installed inside the accommodating grooves 113, an insertion block 120 is installed at the other end of one auxiliary spring 117, a pushing block 118 is installed at the other end of the other auxiliary spring 117, an insertion groove 119 is formed in one side, close to the insertion block 120, the extension mechanism 200 is installed inside the installation frame 114 on the top end of the rotating wheel 116, the hoisting mechanism 300 is installed at the bottom end of the installation frame 114, the insertion block 120 and the pushing block 118 installed on the rotating wheel 116 are matched with each other, so that the steel wire rope sleeved on the rotating wheel 116 is limited on the rotating wheel 116 by the insertion block 120 and the pushing block 118, and the top ends of the insertion block 120 and the pushing block 118 are arc-shaped, so that a worker can easily sleeve the steel wire rope on the rotating wheel 116, and the occurrence of the situation that the steel wire rope falls off from the rotating wheel 116 in the use process of the tower crane main body 100 is reduced.

In this embodiment, the stretching mechanism 200 includes a rotating screw 210, the rotating screw 210 is installed inside the installation frame 114 on the top of the rotating wheel 116, and the outer surface of the rotating screw 210 is provided with screw grooves in opposite directions, the outer surface of the rotating screw 210 is sleeved with two sleeve blocks 211, the number of the sleeve blocks 211 is two, one side of each sleeve block 211 away from the connecting rod 212 is provided with a rod 215, the other end of each installation rod 215 is provided with an auxiliary wheel 216, the outer surface of the rotating screw 210 between the sleeve blocks 211 is sleeved with a first bevel gear 217, the top of the first bevel gear 217 is engaged with a second bevel gear 218, the top of the installation frame 114 is provided with a rotating grip 219, the other end of the rotating grip 219 is connected with the second bevel gear 218, the two sides of the inner wall of the installation frame 114 are provided with positioning blocks 220, one end of each sleeve block, the inside spout 214 of having seted up of one side that is close to slider 213 of installation frame 114, and the one end of slider 213 extends to the inside of spout 214, the wheel 221 that rotates is all installed to the inside of locating piece 220, through rotatory handle 219, thereby make auxiliary wheel 216 remove to opposite direction, thereby make auxiliary wheel 216 pull up wire rope to both sides, thereby make wire rope be in the state of tightening at the in-process of work, thereby avoid in the use afterwards, wire rope leads to wire rope and rotatory wheel 116 and inserts and can appear the space between the piece 120 because the live time overlength, make the condition that the risk that wire rope drops take place.

In this embodiment, both sides of the top end of the moving block 111 are provided with the through groove 222, both sides of the top end of the through groove 222 are provided with the friction roller 223, and the corner of the through groove 222 for the steel wire rope to pass through is provided with the friction roller 223, so that the steel wire rope is reduced in wear degree in the process of passing through the through groove 222, and the service life of the steel wire rope is prolonged.

In this embodiment, the hoisting mechanism 300 includes a movable block 310, the movable block 310 is installed at the bottom end of the installation frame 114, a hook 311 is installed at the bottom end of the movable block 310, the second movable shafts 318 are installed at the bottom ends of the installation frame 114 at both sides of the movable block 310, the sleeve rods 316 are installed at the other ends of the second movable shafts 318, buffer springs 317 are installed inside the sleeve rods 316, telescopic rods 315 are installed at one sides of the buffer springs 317 far away from the second movable shafts 318, first movable shafts 314 are installed at one sides of the sleeve rods 316 far away from the sleeve rods 316, sliding blocks 313 are installed at the other ends of the first movable shafts 314, sliding grooves 312 are installed at one sides of the hook 311 near the sliding blocks 313, the sliding blocks 313 extend into the sliding grooves 312, the telescopic rods 315 connected with the hook 311 at both sides act through the elastic force of the buffer springs, so that the hook 317 can rock, the shaking of the hook 311 is buffered, so that the damage to the hook 311 in the using process is reduced, and the service life of the hook 311 is prolonged.

In this embodiment, the rotating shaft 319 is installed inside the hook 311, the moving rod 320 is installed at one end of the rotating shaft 319, the fitting block 321 is installed on one side of the moving rod 320 close to the inner wall of the hook 311, the other end of the fitting block 321 is connected with the inner wall of the hook 311, the auxiliary block 322 is installed on one side of the inner wall of the hook 311 close to the moving rod 320, and the moving rod 320 and the auxiliary block 322 are fitted to each other through the elastic action of the fitting block 321, so as to avoid the occurrence of the situation that the object can fall off from the hook 311 in the process of hoisting the tower crane main body 100.

The working principle is as follows: when the worker uses the hook 311 of the boom 110 to mount and transport the object to be transported, the worker activates the motor wheel 112, so that the worker can move the mounting frame 114 up and down by the cable connected to the motor wheel 112, when the worker sleeves the cable on the rotating wheel 116 inside the boom 110, the insertion block 120 installed on the rotating wheel 116 is matched with the pushing block 118, so that the wire rope is positioned below the insertion block 120 and the push block 118, and the outer surfaces of the insertion block 120 and the push block 118 are arc-shaped, thereby allowing the worker to conveniently hitch the wire rope to the rotator wheel 116, and then to define the position of the wire rope hitched to the rotator wheel 116 by the insertion block 120 and the pushing block 118, this prevents the cable from becoming detached from the wheel 116 during use.

When a worker starts the tower crane main body 100 to hoist an object, the worker can rotate the rotating grip 219 to drive the second bevel gear 218 connected with the rotating grip 219 to rotate the first bevel gear 217 engaged with the rotating grip 219, and then rotate the rotating screw 210 to move the two sleeving blocks 211 sleeved on the rotating screw 210 in opposite directions, so that the steel wire rope is extruded by the mounting rod 215 and the sleeving blocks 211 to the auxiliary wheel 216 connected with the auxiliary wheel to extend to both sides, and thus the tension of the steel wire rope in the use process is improved, thereby preventing the surface tension of the steel wire rope from being reduced when the service life of the steel wire rope is too long, causing the whole of the steel wire rope on the motor wheel 112 and the rotating wheel 116 to be loose, and increasing the risk that the steel wire rope falls off from the motor wheel 112 or the rotating wheel 116, meanwhile, the auxiliary wheels 216 moving towards the two sides are matched with the rotating wheels 221, so that the position of the steel wire rope extending into the installation frame 114 is limited, the risk of falling of the steel wire rope is further reduced, and the times of maintenance of the installation frame 114 by workers are reduced.

The movable block 310 is installed between the bottom end of the installation frame 114 and the hook 311, the purpose of installing the movable block 310 by an operator is to make the hook 311 sway in the process of tower crane operation by the hook 311, so that the magnitude of the strain force received in the hook 311 in the process of tower crane operation by the hook 311, so as to reduce the metal fatigue of the connection part between the hook 311 and the installation frame 114, so that the service life of the hook 311 is longer than that of the tower crane main body 100 which normally fixes the hook 311, the telescopic rods 315 installed on both sides of the hook 311 can prevent the hook 311 from violently swaying in the process of tower crane operation by the hook 311, the telescopic rods 315 and the buffer springs 317 are matched with each other, so as to move the hook 311 which may sway first, thereby avoiding the hook 311 from swaying too much while reducing the metal fatigue of the hook 311, so that the goods hoisted on the hook 311 have a risk of falling.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive.

Claims

1. The utility model provides a tower crane lifting hook stop device, includes tower crane loop wheel machine main part (100) and installation frame (114), its characterized in that: the tower crane main body (100) comprises a suspension arm (110), a movable block (111) is installed at the bottom end of the suspension arm (110), a motor wheel (112) is installed at the bottom end of the movable block (111), an installation block (115) is installed inside the installation frame (114), the number of the installation block (115) is two, a rotating wheel (116) is installed between the installation blocks (115), an accommodating groove (113) is formed in one side of the inside of the rotating wheel (116), the number of the accommodating groove (113) is two, auxiliary springs (117) are evenly installed inside the accommodating groove (113), an insertion block (120) is installed at the other end of each auxiliary spring (117), a pushing block (118) is installed at the other end of each auxiliary spring (117), and an insertion groove (119) is formed in one side, close to the insertion block (120), of each pushing block (118), and the inserting block (120) extends to the inside of the inserting groove (119), an extension mechanism (200) is arranged inside a mounting frame (114) at the top end of the rotating wheel (116), and a hoisting mechanism (300) is arranged at the bottom end of the mounting frame (114).

2. The tower crane hook limiting device of claim 1, wherein: the outer surface of swiveling wheel (116) has seted up mounting groove (121), roll axle (122) are all installed to the inside of mounting groove (121).

3. The tower crane hook limiting device of claim 1, wherein: the stretching mechanism (200) comprises a rotating screw rod (210), the mounting frame (114) at the top end of the rotating wheel (116) is internally provided with the rotating screw rod (210), the outer surface of the rotating screw rod (210) is provided with thread grooves in opposite directions, the outer surface of the rotating screw rod (210) is sleeved with two sleeving blocks (211), the sleeving blocks (211) are provided with two sleeving blocks (211), one sides of the sleeving blocks (211) far away from the connecting rod (212) are provided with a rod (215), the other ends of the installing rods (215) are provided with auxiliary wheels (216), the outer surface of the rotating screw rod (210) between the sleeving blocks (211) is sleeved with a first bevel gear (217), the top end of the first bevel gear (217) is engaged with a second bevel gear (218), the top end of the mounting frame (114) is provided with a rotating grip (219), and the other end of the rotating grip (219) is connected with the second bevel gear, both sides of the top end of the moving block (111) are provided with through grooves (222).

4. The tower crane hook limiting device of claim 1, wherein: locating piece (220) are all installed to the both sides of installation frame (114) inner wall, the inside of locating piece (220) all installs and rotates wheel (221).

5. The tower crane hook limiting device of claim 1, wherein: connecting rod (212) are all installed to the one end of cover joint piece (211), slider (213) are all installed to the other end of connecting rod (212), spout (214) have been seted up to the inside one side that is close to slider (213) of installation frame (114), and the one end of slider (213) extends to the inside of spout (214).

6. The tower crane hook limiting device of claim 1, wherein: and friction rollers (223) are arranged on two sides of the top end of the through groove (222).

7. The tower crane hook limiting device of claim 1, wherein: the hoisting mechanism (300) comprises a movable block (310), the movable block (310) is installed at the bottom end of an installation frame (114), a hook (311) is installed at the bottom end of the movable block (310), second movable shafts (318) are installed at the bottom ends of the installation frame (114) at the two sides of the movable block (310), sleeve rods (316) are installed at the other ends of the second movable shafts (318), buffer springs (317) are installed inside the sleeve rods (316), telescopic rods (315) are installed at one sides, far away from the second movable shafts (318), of the sleeve rods (316), first movable shafts (314) are installed at one sides, far away from the sleeve rods (316), of the first movable shafts (314) are installed at the other ends, sliding blocks (313) are installed at the two sides of the hook (311), sliding grooves (312) are installed at one sides, close to the sliding blocks (313), and the slide block (313) extends to the inside of the slide groove (312).

8. The tower crane hook limiting device of claim 1, wherein: the internally mounted of couple (311) has rotation axis (319), carriage release lever (320) are installed to the one end of rotation axis (319), carriage release lever (320) are close to one side of couple (311) inner wall and install laminating piece (321), and the other end of laminating piece (321) is connected with the inner wall of couple (311), supplementary piece (322) are installed to one side that couple (311) inner wall is close to carriage release lever (320).