CN210854988U - Overweight protection device for crane hook - Google Patents

Abstract

The utility model provides a hoist is overweight protection device for lifting hook belongs to hoist equipment technical field, draw the subassembly including under casing, pivot, carousel, davit, hoist and mount subassembly and overweight, the under casing sets up subaerial, the pivot can rotate to be installed on the under casing, and the bottom of pivot extends to in the under casing, be equipped with the drive in the under casing pivot pivoted drive assembly, the carousel with the top fixed connection of pivot, the davit is installed on the carousel, hoist and mount subassembly with overweight draws the subassembly and all installs on the davit, the utility model provides a when jack-up weight exceeds the weight limit, because motor traction force is not enough, the heavy object takes place the whereabouts easily and causes danger, causes the problem of unnecessary incident.

Description

Overweight protection device for crane hook

Technical Field

The utility model belongs to the technical field of the crane equipment technique and specifically relates to a crane hook is with overweight protection device is related to.

Background

The crane refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range. Also called a crane, with the advance of urbanization and the reduction of land resources, the number of high-rise buildings in urban construction is increasing, and tower cranes are increasingly used in the construction of high-rise buildings, but the tower crane often happens because of lifting overweight. When the hoisting weight exceeds the weight limit in the prior art, the heavy object is easy to fall to cause danger due to insufficient traction force of the motor, and unnecessary safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a crane hook is with overweight protection device solves among the prior art when jack-up weight surpassed the limit for weight, because motor traction force is not enough, and the heavy object takes place the whereabouts easily and causes danger, causes the technical problem of unnecessary incident.

The utility model provides a hoist is overweight protection device for lifting hook, draw the subassembly including under casing, pivot, carousel, davit, hoist and mount subassembly and overweight, the under casing sets up subaerial, the pivot can rotate to be installed on the under casing, and the bottom of pivot extends to in the under casing, be equipped with the drive in the under casing pivot pivoted drive assembly, the carousel with the top fixed connection of pivot, the davit is installed on the carousel, hoist and mount subassembly with overweight draws the subassembly and all installs on the davit.

Furthermore, the hoisting assembly comprises a first mounting seat, a second mounting seat, a pulley, a take-up pulley, a steel rope, a bearing column, an overweight protector, a lifting hook, a first driving motor, a first driving gear, a first connecting shaft, a second connecting shaft, a first driven gear and a second driven gear, the first mounting seat is arranged at the front end of the suspension arm, the second mounting seat is arranged at the rear end of the suspension arm, the pulley can be rotatably installed in the first mounting seat, the take-up pulley can be rotatably installed in the second mounting seat, one end of the steel rope is fixedly connected with the take-up pulley, the other end of the steel rope penetrates through the pulley and then extends to the lower part of the first mounting seat, the bearing column and the steel rope extend to one end of the lower part of the first mounting seat and are fixedly connected, the lifting hook is installed at the bottom of the bearing column, and the top end of the lifting hook extends into the bearing column, the overweight protector is arranged in the bearing column, the input end of the overweight protector is fixedly connected with the top end of the lifting hook, the first driving motor is horizontally arranged at the side of the second mounting seat, the first driving gear is fixedly connected with an output shaft of the first driving motor, the first connecting shaft is fixedly connected with one end of the take-up pulley, the first connecting shaft extends to the outside of the second mounting seat, the second connecting shaft is fixedly connected with the other end of the take-up pulley, the second connecting shaft extends to the outside of the second mounting seat, the first driven gear is fixedly connected with the first connecting shaft, and the first driven gear is meshed with the first driving gear, and the second driven gear is fixedly connected with the second connecting shaft.

Further, overweight traction assembly includes second driving motor, second driving gear, electric putter and two guide rails, two the guide rail is the symmetry and sets up the top of davit, second driving motor is the level and sets up two on the guide rail, and second driving motor and two guide rail sliding fit, the second driving gear with second driving motor's output shaft fixed connection, electric putter is the level and sets up two the side of guide rail, and electric putter's output with second driving motor's bottom lateral wall fixed connection, electric putter with the output electric connection of overweight protector.

Further, drive assembly includes third driving motor, drive pulley, driven pulley and belt, third driving motor is vertical setting and is in the under casing, drive pulley with third driving motor's output shaft fixed connection, driven pulley with the bottom fixed connection of pivot, the belt cover is established drive pulley with driven pulley's outside.

Furthermore, the side wall of the bottom box is provided with a maintenance door hinged with the bottom box.

Compared with the prior art, the beneficial effects of the utility model reside in that:

one of which, the utility model discloses a hoisting component work lifts by crane the heavy object, and when the weight that the heavy object was sensed to hoisting component exceeded the limit weight, hoisting component stopped to lift by crane and sent overweight signal to overweight traction assembly, then overweight traction assembly and hoisting component simultaneous working increase motor's traction force, light lifts by crane overweight heavy object, and the heavy object can not take place the whereabouts and cause danger, avoids causing the unnecessary incident, has reached the purpose of overweight protection.

Secondly, the utility model hooks the heavy object by the hook, then the first driving motor works to drive the first driving gear fixedly connected with the output shaft of the first driving motor to rotate, the first driving gear rotates to drive the first driven gear to synchronously rotate, the first driven gear rotates to drive the take-up pulley to synchronously rotate, the take-up pulley rotates to wind and wind one end of the steel cable in the take-up pulley, meanwhile, the other end of the steel rope utilizes the pulley to pull the bearing column to rise, the bearing column rises and the heavy object hooked by the lifting hook rises synchronously, the purpose of lifting the heavy object is achieved, the overweight protector can sense the weight of the heavy object hooked by the lifting hook when the heavy object rises, when the weight of the heavy object exceeds the weight limit, the first driving motor stops working, meanwhile, the overweight protector sends an overweight signal into the overweight traction component, so that the overweight traction component can be conveniently matched with the hoisting component to safely hoist an overweight object.

Thirdly, the utility model discloses when electric putter receives the overweight signal that overweight protector sent, electric putter work drives rather than output fixed connection's second driving motor and moves on two guide rails, when the second driving gear with second driving motor output shaft fixed connection and second driven gear meshing, electric putter stop work, after that second driving motor rotates with first driving motor synchronization syntropy, it rotates to drive the take-up pulley once more, the traction force of motor has been increased, light hoist overweight heavy object, the heavy object can not take place the whereabouts and cause danger, avoid causing the unnecessary incident, the purpose of overweight protection has been reached.

And fourthly, the utility model discloses a third driving motor work drives rather than output shaft fixed connection's drive pulley and rotates, because the belt sleeve is established in drive pulley and driven pulley's outside, so belt and driven pulley rotate in step, and driven pulley rotates and drives the pivot and also rotate in step, and the pivot is rotated and is driven the carousel and rotate thereupon, and the carousel rotates and drives the davit rotation, and the davit rotates the convenience and hoists the heavy object.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a partial perspective sectional view of the present invention;

fig. 3 is a schematic perspective view of the driving assembly of the present invention.

Reference numerals:

the device comprises a bottom box 1, a maintenance door 101, a rotating shaft 2, a turntable 3, a suspension arm 4, a hoisting assembly 5, a first mounting seat 501, a second mounting seat 502, a pulley 503, a take-up pulley 504, a steel rope 505, a bearing column 506, an overweight protector 507, a hook 508, a first driving motor 509, a first driving gear 510, a first connecting shaft 511, a second connecting shaft 512, a first driven gear 513, a second driven gear 514, an overweight traction assembly 6, a second driving motor 601, a second driving gear 602, an electric push rod 603, a guide rail 604, a driving assembly 7, a third driving motor 701, a driving pulley 702, a driven pulley 703 and a belt 704.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following description shows with reference to fig. 1-3, the present invention provides an overweight protection device for crane hook, comprising a bottom case 1, a rotating shaft 2, a rotating disc 3, a suspension arm 4, a hoisting component 5 and an overweight traction component 6, wherein the bottom case 1 is disposed on the ground, the rotating shaft 2 is rotatably mounted on the bottom case 1, the bottom end of the rotating shaft 2 extends into the bottom case 1, a driving component 7 for driving the rotating shaft 2 to rotate is disposed in the bottom case 1, the rotating disc 3 is fixedly connected with the top end of the rotating shaft 2, the suspension arm 4 is mounted on the rotating disc 3, the hoisting component 5 and the overweight traction component 6 are both mounted on the suspension arm 4, the heavy object is hoisted by the hoisting component 5, when the hoisting component 5 senses that the weight of the heavy object exceeds the weight limit, the hoisting component 5 stops hoisting and sends an overweight signal to the overweight traction component 6, then the overweight traction component 6 and the hoisting component 5 work simultaneously to increase the traction force of the motor, so that the overweight heavy object is easily hoisted, the heavy object cannot fall to cause danger, unnecessary safety accidents are avoided, and the purpose of overweight protection is achieved.

Specifically, the hoisting assembly 5 includes a first mounting seat 501, a second mounting seat 502, a pulley 503, a wire winding wheel 504, a steel rope 505, a bearing column 506, an overweight protector 507, a hook 508, a first driving motor 509, a first driving gear 510, a first connecting shaft 511, a second connecting shaft 512, a first driven gear 513 and a second driven gear 514, the first mounting seat 501 is disposed at the front end of the suspension arm 4, the second mounting seat 502 is disposed at the rear end of the suspension arm 4, the pulley 503 is rotatably mounted in the first mounting seat 501, the wire winding wheel 504 is rotatably mounted in the second mounting seat 502, one end of the steel rope 505 is fixedly connected with the wire winding wheel 504, the other end of the steel rope 505 passes through the pulley 503 and extends to the lower part of the first mounting seat 501, the bearing column 506 is fixedly connected with one end of the steel rope 505 extending to the lower part of the first mounting seat 501, the hook 508 is installed at the bottom of the bearing column 506, the top end of the hook 508 extends into the bearing column 506, the overweight protector 507 is installed in the bearing column 506, the input end of the overweight protector 507 is fixedly connected with the top end of the hook 508, the first driving motor 509 is horizontally arranged at the side of the second installation seat 502, the first driving gear 510 is fixedly connected with the output shaft of the first driving motor 509, the first connecting shaft 511 is fixedly connected with one end of the take-up pulley 504, the first connecting shaft 511 extends to the outside of the second installation seat 502, the second connecting shaft 512 is fixedly connected with the other end of the take-up pulley 504, the second connecting shaft 512 extends to the outside of the second installation seat 502, the first driven gear 513 is fixedly connected with the first connecting shaft 511, the first driven gear 513 is engaged with the first driving gear 510, the second driven gear 514 is fixedly connected with the second connecting shaft 512, when the heavy object is lifted, the heavy object is hooked through the hook 508, then the first driving motor 509 works to drive the first driving gear 510 fixedly connected with the output shaft of the first driving gear to rotate, the first driving gear 510 rotates to drive the first driven gear 513 to synchronously rotate, the first driven gear 513 rotates to drive the take-up pulley 504 to synchronously rotate, the take-up pulley 504 rotates to wind and wind one end of the steel rope 505 in the take-up pulley 504, meanwhile, the other end of the steel rope 505 utilizes the pulley 503 to pull the bearing column 506 to ascend, the heavy object hooked by the hook 508 is synchronously ascended while the bearing column 506 ascends, the purpose of lifting the heavy object is achieved, the weight 507 can sense the weight hooked by the hook 508 while the heavy object ascends, when the weight of the heavy object exceeds the limit, the first driving motor 509 stops working, and meanwhile, the overweight protector 507 sends an overweight signal into the overweight traction component 6, so that the overweight traction component 6 is conveniently matched with the hoisting component 5 to safely hoist an overweight object.

Specifically, the overweight traction assembly 6 comprises a second driving motor 601, a second driving gear 602, an electric push rod 603 and two guide rails 604, the two guide rails 604 are symmetrically arranged on the top of the suspension arm 4, the second driving motor 601 is horizontally arranged on the two guide rails 604, the second driving motor 601 is in sliding fit with the two guide rails 604, the second driving gear 602 is fixedly connected with an output shaft of the second driving motor 601, the electric push rod 603 is horizontally arranged beside the two guide rails 604, an output end of the electric push rod 603 is fixedly connected with a bottom end side wall of the second driving motor 601, the electric push rod 603 is electrically connected with an output end of the overweight protector 507, when the electric push rod 603 receives an overweight signal sent by the overweight protector 507, the electric push rod 603 drives the second driving motor 601 fixedly connected with the output end thereof to move on the two guide rails 604, when the second driving gear 602 fixedly connected with the output shaft of the second driving motor 601 is meshed with the second driven gear 514, the electric push rod 603 stops working, and then the second driving motor 601 and the first driving motor 509 synchronously rotate in the same direction to drive the take-up pulley 504 to rotate again, so that the traction force of the motors is increased, an overweight heavy object is easily lifted, the heavy object cannot fall to cause danger, unnecessary safety accidents are avoided, and the purpose of overweight protection is achieved.

Specifically, the driving assembly 7 includes a third driving motor 701, a driving pulley 702, a driven pulley 703 and a belt 704, the third driving motor 701 is vertically disposed in the bottom case 1, the driving pulley 702 is fixedly connected to an output shaft of the third driving motor 701, the driven pulley 703 is fixedly connected to a bottom end of the rotating shaft 2, the belt 704 is sleeved outside the driving pulley 702 and the driven pulley 703, the driving pulley 702 fixedly connected to the output shaft is driven to rotate by the third driving motor 701, since the belt 704 is sleeved outside the driving pulley 702 and the driven pulley 703, the belt 704 and the driven pulley 703 synchronously rotate, the driven pulley 703 rotates to drive the rotating shaft 2 to synchronously rotate, the rotating shaft 2 rotates to drive the rotating disc 3 to rotate therewith, and the rotating disc 3 rotates to drive the suspension arm 4 to rotate, the suspension arm 4 rotates to conveniently hoist the heavy object.

Specifically, the side wall of the bottom case 1 is provided with a maintenance door 101 hinged thereto, and the maintenance door 101 facilitates maintenance of the driving assembly 7 in the bottom case 1.

The utility model discloses the theory of operation: when the utility model is used, the heavy object is hooked by the hook 508, then the first driving motor 509 works to drive the first driving gear 510 fixedly connected with the output shaft thereof to rotate, the first driving gear 510 rotates to drive the first driven gear 513 to rotate synchronously, the first driven gear 513 rotates to drive the take-up pulley 504 to rotate synchronously, the take-up pulley 504 rotates to wind and roll one end of the steel rope 505 in the take-up pulley 504, meanwhile, the other end of the steel rope 505 utilizes the pulley 503 to pull the bearing column 506 to rise, the heavy object hooked by the hook 508 rises synchronously while the bearing column 506 rises, the purpose of hoisting the heavy object is achieved, the overweight protector 507 can sense the weight of the heavy object hooked by the hook 508 while the heavy object rises, when the weight of the heavy object exceeds the weight limit, the first driving motor 509 stops working, meanwhile, the overweight protector 507 sends an overweight signal to the electric push rod 603, when the electric push rod 603 receives the overweight signal sent by the, the electric push rod 603 drives the second driving motor 601 fixedly connected with the output end of the electric push rod to move on the two guide rails 604, when the second driving gear 602 fixedly connected with the output shaft of the second driving motor 601 is meshed with the second driven gear 514, the electric push rod 603 stops working, the second driving motor 601 and the first driving motor 509 synchronously rotate in the same direction, the wire take-up wheel 504 is driven to rotate again, the traction force of the motor is increased, the overweight heavy object is easily lifted, the heavy object cannot fall to cause danger, unnecessary safety accidents are avoided, and the purpose of overweight protection is achieved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (5)

1. The utility model provides a crane hook is with overweight protection device which characterized in that: including under casing (1), pivot (2), carousel (3), davit (4), hoist and mount subassembly (5) and overweight subassembly (6) of pulling, under casing (1) sets up subaerial, pivot (2) can rotate to be installed on under casing (1), and the bottom of pivot (2) extends to in under casing (1), be equipped with the drive in under casing (1) pivot (2) pivoted drive assembly (7), carousel (3) with the top fixed connection of pivot (2), davit (4) are installed on carousel (3), hoist and mount subassembly (5) with overweight subassembly (6) of pulling are all installed on davit (4).

2. An overweight protection device for crane hooks as claimed in claim 1, characterised in that: hoist and mount subassembly (5) are including first mount pad (501), second mount pad (502), pulley (503), take-up pulley (504), steel cable (505), bear post (506), overweight protector (507), lifting hook (508), first driving motor (509), first driving gear (510), first connecting axle (511), second connecting axle (512), first driven gear (513) and second driven gear (514), first mount pad (501) set up the front end of davit (4), second mount pad (502) set up the rear end of davit (4), pulley (503) can rotate to be installed in first mount pad (501), take-up pulley (504) can rotate to be installed in second mount pad (502), the one end of steel cable (505) with take-up pulley (504) fixed connection, the other end of steel cable (505) passes after pulley (503) extend to the lower mount pad (501) The bearing column (506) is fixedly connected with one end of the steel rope (505) extending to the lower part of the first mounting seat (501), the hook (508) is installed at the bottom of the bearing column (506), the top end of the hook (508) extends into the bearing column (506), the overweight protector (507) is installed in the bearing column (506), the input end of the overweight protector (507) is fixedly connected with the top end of the hook (508), the first driving motor (509) is horizontally arranged at the side of the second mounting seat (502), the first driving gear (510) is fixedly connected with the output shaft of the first driving motor (509), the first connecting shaft (511) is fixedly connected with one end of the take-up pulley (504), and the first connecting shaft (511) extends to the outside of the second mounting seat (502), the second connecting shaft (512) is fixedly connected with the other end of the take-up pulley (504), the second connecting shaft (512) extends to the outside of the second mounting seat (502), the first driven gear (513) is fixedly connected with the first connecting shaft (511), the first driven gear (513) is meshed with the first driving gear (510), and the second driven gear (514) is fixedly connected with the second connecting shaft (512).

3. An overweight protection device for crane hooks as claimed in claim 2, wherein: the overweight traction component (6) comprises a second driving motor (601), a second driving gear (602), an electric push rod (603) and two guide rails (604), wherein the two guide rails (604) are symmetrically arranged at the top of the suspension arm (4), the second driving motor (601) is horizontally arranged on the two guide rails (604), and the second driving motor (601) is in sliding fit with the two guide rails (604), the second driving gear (602) is fixedly connected with an output shaft of the second driving motor (601), the electric push rod (603) is horizontally arranged at the side of the two guide rails (604), and the output end of the electric push rod (603) is fixedly connected with the side wall of the bottom end of the second driving motor (601), the electric push rod (603) is electrically connected with the output end of the overweight protector (507).

4. An overweight protection device for crane hooks as claimed in claim 1, characterised in that: drive assembly (7) include third driving motor (701), drive pulley (702), driven pulley (703) and belt (704), third driving motor (701) are vertical setting and are in under casing (1), drive pulley (702) with the output shaft fixed connection of third driving motor (701), driven pulley (703) with the bottom fixed connection of pivot (2), belt (704) cover is established drive pulley (702) with the outside of driven pulley (703).

5. An overweight protection device for crane hooks as claimed in claim 1, characterised in that: and a maintenance door (101) hinged with the bottom box (1) is arranged on the side wall of the bottom box.

Images