CN211813086U

CN211813086U - Steel cable stall self-locking device for light and small-sized suspended crane

Info

Publication number: CN211813086U
Application number: CN201921120082.8U
Authority: CN
Inventors: 刘卫斌
Original assignee: Hubei Zhuoneng Lifting Machinery Co ltd
Current assignee: Hubei Zhuoneng Lifting Machinery Co ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-10-30
Anticipated expiration: 2029-07-17

Abstract

The utility model relates to the technical field of crane, and a light small-size steel cable stall self-lock device for suspension crane is disclosed, the power distribution box comprises a box body, bottom half from a left side to the right side fixedly connected with bracing piece and support in proper order, support top fixedly connected with spliced pole, fixedly connected with gear two in the middle of the spliced pole, the outside fixedly connected with brake drum of gear, surface fixedly connected with motor two under the box top, two left sides of motor connecting rod right halves is threaded rod one, left half is threaded rod two, threaded rod one and the two outer walls of threaded rod activity socket joint thread bush one and thread bush two respectively, the thread bush passes through staple fixedly connected with connection bow, the inboard fixedly connected with brake block of connection bow. The rotating speed detector triggers the motor II to drive the threaded rod to move, contract and connect the bow to extrude the brake pad, and the brake pad rubs the brake drum, so that the stalling self-locking effect is achieved.

Description

Steel cable stall self-locking device for light and small-sized suspended crane

Technical Field

The utility model relates to a hoist technical field specifically is a light small-size steel cable stall self-lock device for suspension crane.

Background

In the light small-size suspension type hoisting equipment of modern, all can set up a stall locker, when the thing piece descends fast, the stall locker can hang heavy equipment through locking, plays the effect of protection to hanging heavy thing, also avoids the heavy object to injure the people simultaneously, all plays safety protection's effect to people and equipment.

As for the existing equipment, when the stall locking device works, the equipment is suddenly clamped to achieve the stall self-locking effect, so that the loss of the equipment is large, meanwhile, a moving heavy object suddenly becomes static, and a large inertia force impacts, so that the loss of the impact force on a steel cable is large, and the cable is likely to be broken.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The not enough to prior art, the utility model provides a light small-size steel cable stall self-lock device for overhead crane possesses the dead advantage of slow-speed lock, has solved the dead great problem of equipment and steel cable loss of current equipment sudden locking.

(II) technical scheme

For realizing the dead purpose of above-mentioned slow speed lock, the utility model provides a following technical scheme: a steel cable stall self-locking device for a light and small suspended crane comprises a box body, wherein a supporting rod and a support are fixedly connected to the bottom of the box body from left to right in sequence, a first motor is fixedly connected to the top of the supporting rod, a first gear is installed at one end of the first motor, a connecting column is fixedly connected to the top of the support, a second gear is fixedly connected to the middle of the connecting column, brake drums are fixedly connected to the outer sides of the gears, a rotating speed detector is fixedly connected to the middle of the support, a supporting block is fixedly connected to the support at the top of the rotating speed detector, a suspension rod is fixedly connected to the lower surface of the top of the box body, a second motor is fixedly connected to the bottom of the suspension rod, a connecting rod is fixedly connected to the left side of the second motor, a first threaded rod is arranged on, two outer wall activities of threaded rod cup joint thread bush two, two equal fixedly connected with staple of two and the first outer wall of thread bush, two the bow is connected to the inboard equal fixedly connected with of staple, the inboard fixedly connected with brake block of connecting the bow, brake block swing joint is at the brake drum outer wall, the lower extreme of connecting the bow is through pivot swing joint on the supporting shoe, two connect bow lower extreme difference fixedly connected with connecting block one and connecting block two, connecting block one and two swing joint of connecting block.

Preferably, a circular groove is formed in the right end of the first connecting block, a ball matched with the first connecting block is installed at the left end of the second connecting block, and the ball on the second connecting block can rotate in the circular groove when the locking procedure is performed conveniently.

Preferably, the thread grooves on the inner walls of the first thread sleeve and the second thread sleeve are respectively matched with the first thread rod and the second thread rod, and the threads on the outer sides of the first thread rod and the second thread rod are opposite, so that the opposite movement of the first thread sleeve and the second thread sleeve is driven by the thread movement matched with the thread grooves.

Preferably, the brake pad is made of ceramic materials, and the ceramic materials have good stability in the friction process and are not required to be replaced frequently.

Preferably, the brake drum is made of gray cast iron, and the brake drum is good in heat dissipation performance, capable of increasing friction performance and reducing noise during locking.

Preferably, the distance between the brake pad and the brake drum is small, the time for locking the brake pad with the small distance is short, and the reaction time can be shortened.

Preferably, a cable winding post is fixedly connected to the rear of the second gear, and the cable winding post is fixedly connected with the second gear and the brake drum so as to realize rapid braking in stall.

(III) advantageous effects

Compared with the prior art, the utility model provides a light small-size steel cable stall self-lock device for overhead crane possesses following beneficial effect:

1. this light small-size steel cable stall self-lock device for suspended crane, detect the rotational speed of brake drum through the rotational speed detector, when discovery brake drum rotational speed is greater than the safety setting value, two switches of rotational speed detector trigger motor, two starts of motor, two drive connecting rods of motor rotate, the connecting rod drives threaded rod one and threaded rod two respectively with thread bush one with two constitution screw motion of thread bush, screw motion drives thread bush two and thread bush one and is close to each other, distance between two connection bows at this moment reduces, it is close to the brake drum to drive the brake block, slowly compress tightly the brake drum, thereby reach the effect of the dead stall hoist of slow-speed lock.

2. This light small-size steel cable stall self-lock device for suspended crane through set up screw rod one and screw rod two that the screw thread opposite direction on the connecting rod, cup joint respectively at screw rod one and screw rod two outer walls with screw rod one and screw rod two-phase adaptation's thread bush two to it is synchronous effect to have reached the speed that two brake blocks are close to the brake drum and lock the brake drum.

Drawings

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

fig. 2 is the structure diagram of the stall self-locking device of the present invention.

In the figure: the brake device comprises a box body 1, a support rod 2, a motor I3, a gear I4, a support 5, a rotating speed detector 6, a suspension rod 7, a motor II 8, a gear II 9, a connecting rod 10, a threaded rod I11, a threaded rod II 12, a threaded sleeve I13, a fixing nail 14, a threaded sleeve II 15, a connecting bow 16, a brake pad 17, a connecting block I18, a connecting block II 19, a rotating shaft 20, a brake drum 21, a connecting column 22 and a support block 23.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-2, a light and small-sized steel cable stall self-locking device for a suspended crane comprises a box body 1, a supporting rod 2 and a support 5 are fixedly connected to the bottom of the box body 1 from left to right in sequence, a motor I3 is fixedly connected to the top of the supporting rod 2, a gear I4 is installed at one end of the motor I3, a connecting column 22 is fixedly connected to the top of the support 5, a gear II 9 is fixedly connected to the middle of the connecting column 22, a cable winding column is fixedly connected to the rear of the gear II 9, the cable winding column is fixedly connected with the gear II 9 and the brake drum 21 so as to be rapidly braked when the crane stalls, a brake drum 21 is fixedly connected to the outer side of the gear II 9, the brake drum 21 is made of gray cast iron, the brake drum has good heat dissipation performance and can increase friction performance and reduce noise when the crane stalls, the lower surface of the top of the box body 1 is fixedly connected with a suspension rod 7, the bottom of the suspension rod 7 is fixedly connected with a motor II 8, the left side of the motor II 8 is fixedly connected with a connecting rod 10, the right half part of the connecting rod 10 is a threaded rod I11, the left half part of the connecting rod 10 is a threaded rod II 12, the outer wall of the threaded rod I11 is movably sleeved with a threaded sleeve I13, the outer wall of the threaded rod II 12 is movably sleeved with a threaded sleeve II 15, thread grooves on the inner walls of the threaded sleeve I13 and the threaded sleeve II 15 are respectively matched with the threaded rod I11 and the threaded rod II 12, the threads on the outer sides of the threaded rod I11 and the threaded rod II 12 are opposite, because the opposite movement of the threaded sleeve I13 and the threaded sleeve II 15 is driven by the thread movement matched with the thread grooves, the outer walls of the threaded sleeve II 15 and the threaded sleeve I13 are fixedly connected with fixing nails 14, the inner, brake block 17 comprises ceramic material, ceramic material stability can be good in the friction process, need not change often, brake block 17 swing joint is at the brake drum 21 outer wall, the interval between brake block 17 and the brake drum 21 is very little, the interval little locking time spent is just few, can reduce reaction time, the lower extreme of connecting bow 16 is through pivot 20 swing joint on supporting shoe 23, two connecting bow 16 lower extremes are fixedly connected with connecting block one 18 and connecting block two 19 respectively, connecting block one 18 and connecting block two 19 swing joint, connecting block one 18 right-hand member has seted up circular recess, the ball that matches with connecting block one 18 is installed to connecting block two 19 left ends, the ball on connecting block two 19 rotates in it when the circular recess on connecting block one 18 conveniently locks the procedure.

The working principle is that when the crane is started, the first gear 4 is driven to rotate by the first motor 3, the second gear 9 is driven to rotate by the first gear 4, the second gear 9 drives the brake drum 21 to rotate, in the operation process, the rotating speed of the brake drum 21 is detected by the rotating speed detector 6, when the rotating speed of the brake drum 21 is found to be larger than a safety set value, the rotating speed detector 6 triggers the switch of the second motor 8, the second motor 8 starts, the second motor 8 drives the connecting rod 10 to rotate, the connecting rod 10 drives the first threaded rod 11 and the second threaded rod 12 to respectively form threaded motion with the first threaded sleeve 13 and the second threaded sleeve 15, the threaded motion drives the second threaded sleeve 15 and the first threaded sleeve 13 to approach each other, at the moment, the distance between the two connecting arches 16 is reduced, the second connecting block 19 also rotates in the first connecting block 18, certain supporting effect is achieved, the connecting arches 16 approach each other to, thereby achieving the effect of slowly locking the stall crane.

In conclusion, the steel cable stall self-locking device for the light and small suspended crane detects the rotating speed of the brake drum 21 through the rotating speed detector 6, when the rotating speed of the brake drum 21 is larger than a safety setting value, the rotating speed detector 6 triggers the switch of the motor II 8, the motor II 8 starts, the motor II 8 drives the connecting rod 10 to rotate, the connecting rod 10 drives the threaded rod I11 and the threaded rod II 12 to respectively form threaded motion with the thread sleeve I13 and the thread sleeve II 15, the threaded motion drives the thread sleeve II 15 and the thread sleeve I13 to approach each other, at the moment, the distance between the two connecting arches 16 is reduced, the brake block 17 is driven to approach the brake drum 21, and the brake drum 21 is slowly pressed, so that the effect of slowly locking the stall crane is achieved; through set up threaded rod one 11 and threaded rod two 12 that the screw direction is opposite on connecting rod 10, cup joint respectively in threaded rod one 11 and the threaded rod two 12 outer wall with threaded rod one 11 and threaded rod two 12 looks adaptation thread bush one 13 and thread bush two 15 to it is synchronous effect to have reached two brake pads 17 and be close to brake drum 21 and the speed of locking brake drum 21.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a light small-size steel cable stall self-lock device for overhead crane, includes box (1), its characterized in that: the bottom of the box body (1) is fixedly connected with a supporting rod (2) and a support (5) from left to right in sequence, the top of the supporting rod (2) is fixedly connected with a first motor (3), one end of the first motor (3) is provided with a first gear (4), the top of the support (5) is fixedly connected with a connecting column (22), the middle of the connecting column (22) is fixedly connected with a second gear (9), the outer side of the second gear (9) is fixedly connected with a brake drum (21), the middle of the support (5) is fixedly connected with a rotating speed detector (6), the support (5) at the top of the rotating speed detector (6) is fixedly connected with a supporting block (23), the lower surface at the top of the box body (1) is fixedly connected with a suspension rod (7), the bottom of the suspension rod (7) is fixedly connected with a second motor (8), the right half part of the connecting rod (10) is a first threaded rod (11), the left half part of the connecting rod (10) is a second threaded rod (12), a first threaded rod (11) is movably sleeved with a first threaded sleeve (13), a second threaded rod (12) is movably sleeved with a second threaded sleeve (15), the outer walls of the second threaded sleeve (15) and the first threaded sleeve (13) are fixedly connected with fixing nails (14), the inner sides of the fixing nails (14) are fixedly connected with a connecting bow (16), the inner sides of the connecting bow (16) are fixedly connected with brake pads (17), the brake pads (17) are movably connected with the outer wall of a brake drum (21), the lower end of the connecting bow (16) is movably connected onto a supporting block (23) through a rotating shaft (20), and the lower ends of the connecting bow (16) are respectively and fixedly connected with a first connecting block (18) and a second connecting block (19), the first connecting block (18) is movably connected with the second connecting block (19).

2. The steel cable stall self-locking device for the light and small suspended crane according to claim 1, wherein: the right end of the first connecting block (18) is provided with a circular groove, and the left end of the second connecting block (19) is provided with a ball matched with the first connecting block (18).

3. The steel cable stall self-locking device for the light and small suspended crane according to claim 1, wherein: the thread grooves in the inner walls of the first thread sleeve (13) and the second thread sleeve (15) are matched with the first threaded rod (11) and the second threaded rod (12) respectively, and the threads on the outer sides of the first threaded rod (11) and the second threaded rod (12) are opposite.

4. The steel cable stall self-locking device for the light and small suspended crane according to claim 1, wherein: the brake pad (17) is made of ceramic material.

5. The steel cable stall self-locking device for the light and small suspended crane according to claim 1, wherein: the brake drum (21) is made of gray cast iron.

6. The steel cable stall self-locking device for the light and small suspended crane according to claim 1, wherein: and a cable winding post is fixedly connected to the rear of the second gear (9).