CN212982284U - Anti-falling protection device for electric hoist of crane - Google Patents
Anti-falling protection device for electric hoist of crane Download PDFInfo
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- CN212982284U CN212982284U CN202021375624.9U CN202021375624U CN212982284U CN 212982284 U CN212982284 U CN 212982284U CN 202021375624 U CN202021375624 U CN 202021375624U CN 212982284 U CN212982284 U CN 212982284U
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- electric hoist
- falling
- electric block
- protection device
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Abstract
The utility model discloses a hoist electric block protection device that prevents falling, including electric block and support, fixed mounting has the crossbeam slide rail on the support, and electric block installs on the crossbeam slide rail, and electric block's below is provided with the lifting hook, electric block's below is provided with the bracket that prevents falling that is located the support, and the equal fixed mounting in left and right sides surface of the bracket that prevents falling has servo motor. The utility model discloses a lifting fall-preventing bracket of the liftable that sets up prevents falling the protection of falling to the electric block that drops, prevents to pound the people, and the bracket that can controllably fall simultaneously moves down to take off the electric block of damage, through ratchet wheel and the stopper cooperation on the rotary drum, under the condition that electric block does not have the circular telegram, rotate the restriction to the rotary drum, prevent that the lifting hook under the steel cable from falling.
Description
Technical Field
The utility model relates to an electric block specifically is a hoist electric block protection device that prevents falling.
Background
The electric hoist is a special hoisting device, is installed on a crown block and a gantry crane, has the characteristics of small volume, light dead weight, simple operation, convenient use and the like, and is used in places such as industrial and mining enterprises, storage, docks and the like. The electric hoist has compact structure, and the motor axis is vertical to the electric hoist of the winding drum axis by adopting a worm gear transmission device. The disadvantages are: the length dimension is big, and the size is big in the aspect of the width, and the structure is bulky, and mechanical efficiency is low, and it is difficult etc.. The hydraulic system is dual control, and the overflow regulating valve and the magnetic contact pressure gauge can accurately control the pressure. The electric appliance control department adopts low voltage control, and the safety of the governing system is increased.
The electric hoist of the crane is likely to fall in the long-time use process, and the Chinese patent discloses a fall-preventing protection device for the electric hoist of the crane (grant publication No. CN206783162U), which can prevent falling protection of the electric hoist, but is inconvenient to take off the falling electric hoist, and cannot prevent falling protection of a falling hook. Therefore, the utility model provides a hoist electric block protection device that prevents falling to solve the problem that proposes among the above-mentioned background art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hoist electric block protection device that prevents falling to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a falling prevention protection device for an electric hoist of a crane comprises the electric hoist and a support, wherein a beam slide rail is fixedly installed on the support, the electric hoist is installed on the beam slide rail, a lifting hook is arranged below the electric hoist, a falling prevention bracket positioned in the support is arranged below the electric hoist, servo motors are fixedly installed on the surfaces of the left side and the right side of the falling prevention bracket, a worm is fixedly installed on a motor shaft of each servo motor, a worm wheel meshed with the worm is arranged below the worm, and the worm wheels are rotatably connected to the left end and the right end of the falling prevention bracket;
the inside rotary drum that is provided with of electric block, the one end fixed mounting of rotary drum has the ratchet wheel, and one side of ratchet wheel is provided with the slide rail of fixed mounting on the electric block shell, is provided with the drive strip on the slide rail, the front side fixedly connected with half gear of ratchet wheel, the below of half gear is equipped with rather than the rack of meshing, and fixed mounting is in drive strip left side surface on the rack, and the right side of drive strip is provided with the stopper.
As a further aspect of the present invention: the anti-falling bracket is connected in the support in a vertical sliding mode, and a cushion pad is arranged in the anti-falling bracket.
As a further aspect of the present invention: the left and right rear sides of the anti-falling bracket are respectively provided with a straight gear fixedly connected with a worm gear, and toothed plates meshed with the straight gears are fixedly mounted on the left and right outer sides of the support.
As a further aspect of the present invention: the side surface of the transmission strip is L-shaped, and the transmission strip is connected to the sliding rail in a left-right sliding manner.
As a further aspect of the present invention: the upper portion of the right side of the transmission strip is rotatably connected with a rotating rod, a limiting block is fixedly connected with the rotating rod, and a torsion spring is arranged on the rotating rod.
As a further aspect of the present invention: the support is fixedly provided with a controller, and the controller is electrically connected with the two servo motors respectively.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a lifting's that sets up bracket of preventing falling is prevented falling the protection of falling to the electric block that drops, prevents to pound the people, and the bracket that can controllably prevent falling simultaneously moves down to take off the electric block of damage.
2. The utility model discloses a ratchet wheel on the rotary drum cooperates with the stopper, does not have under the circumstances of circular telegram at electric block, rotates the restriction to the rotary drum, prevents that the lifting hook under the steel cable from falling.
Drawings
Fig. 1 is a schematic structural diagram of a fall-preventing protection device of an electric hoist of a crane.
Fig. 2 is an enlarged structural schematic diagram of a position A in the anti-falling protection device of the electric hoist of the crane.
Fig. 3 is a schematic side sectional structure view of an electric hoist in the fall protection device for the electric hoist of the crane.
Fig. 4 is a schematic structural diagram of a transmission bar in the anti-falling protection device of the electric hoist of the crane.
In the figure: 1. an electric hoist; 2. a cross beam slide rail; 3. a support; 4. a fall prevention bracket; 5. a cushion pad; 6. a hook; 7. A worm; 8. a worm gear; 9. a servo motor; 10. a toothed plate; 11. a spur gear; 12. a ratchet gear; 13. a rotating drum; 14. a limiting block; 15. a rotating rod; 16. a drive bar; 17. a slide rail; 18. a half gear; 19. a rack; 20. and a controller.
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. 1-4, in the embodiment of the present invention, an anti-falling protection device for an electric hoist of a crane comprises an electric hoist 1 and a support 3, wherein a cross beam slide rail 2 is fixedly installed on the support 3, the electric hoist 1 is installed on the cross beam slide rail 2, a hook 6 is installed below the electric hoist 1, an anti-falling bracket 4 located in the support 3 is installed below the electric hoist 1, the anti-falling bracket 4 is connected in the support 3 in a vertical sliding manner, a buffer cushion 5 is installed in the anti-falling bracket 4, when the electric hoist 1 falls on the anti-falling bracket 4, the buffer cushion 5 in the anti-falling bracket 4 can reduce the impact when the electric hoist 1 falls, a servo motor 9 is fixedly installed on the left and right side surfaces of the anti-falling bracket 4, a worm 7 is fixedly installed on the motor shaft of the servo motor 9, a worm wheel 8 meshed with, the worm wheel 8 is rotatably connected to the left end and the right end of the anti-falling bracket 4, straight gears 11 fixedly connected with the worm wheel 8 are arranged on the left rear side and the right rear side of the anti-falling bracket 4, toothed plates 10 meshed with the straight gears 11 are fixedly mounted on the left outer side and the right outer side of the support 3, a motor shaft of the servo motor 9 is driven by the worm 7 and the worm wheel 8 to rotate the straight gears 11, the straight gears 11 are meshed with the toothed plates 10, the bracket sliding in the support 3 moves downwards, the electric hoist 1 falling in the anti-falling bracket 4 is taken out to be replaced, a controller 20 is fixedly mounted on the support 3, the controller 20 is electrically connected with the two servo motors 9 respectively, and the servo motors 9 on the left side and the right side of the bracket are controlled by the controller 20 to;
the electric hoist 1 is internally provided with a rotating drum 13, one end of the rotating drum 13 is fixedly provided with a ratchet wheel 12, one side of the ratchet wheel 12 is provided with a slide rail 17 fixedly arranged on the shell of the electric hoist 1, the slide rail 17 is provided with a transmission strip 16, the side surface of the transmission strip 16 is L-shaped, the transmission strip 16 is connected on the slide rail 17 in a left-right sliding manner, the front side of the ratchet wheel 12 is fixedly connected with a half gear 18, the lower part of the half gear 18 is provided with a rack 19 meshed with the half gear, the rack 19 is fixedly arranged on the left side surface of the transmission strip 16, the right side of the transmission strip 16 is provided with a limit block 14, under the condition that the electric hoist 1 is electrified, in order to prevent the lifting hook 6 from falling down accidentally, the ratchet wheel 12 and the limit block 14 on the transmission strip 16 can lock the rotating drum 13 to prevent the rotation, the upper part, and the torsion spring is arranged on the rotating rod 15, when the electric hoist 1 is powered on to work, the rotary drum 13 rotates clockwise to lift the lifting hook 6, the torsion spring arranged on the rotating rod 15 can control the limiting block 14 to reset, when the rotary drum 13 rotates anticlockwise, the half gear 18 is meshed with the rack 19, the transmission strip 16 moves to the right on the slide rail 17, the ratchet gear 12 loses the limitation of the limiting block 14, and the electric hoist 1 controls the falling of the lifting hook 6.
The utility model discloses a theory of operation is:
when the electric hoist 1 falls on the anti-falling bracket 4, the buffer cushion 5 in the anti-falling bracket 4 can reduce the impact when the electric hoist 1 falls, the controller 20 controls the servo motors 9 on the left side and the right side of the bracket to work, the motor shaft of the servo motor 9 is driven by the worm 7 and the worm wheel 8 to rotate the straight gear 11, the straight gear wheel 11 is meshed with the toothed plate 10 to make the bracket sliding in the bracket 3 move downwards, the electric hoist 1 falling in the anti-falling bracket 4 is taken out for replacement, when the electric hoist 1 is powered on to work, the rotary drum 13 rotates clockwise to pull up the lifting hook 6, the torsion spring arranged on the rotary rod 15 can control the limit block 14 to reset, when the rotary drum 13 rotates anticlockwise, the half gear 18 is meshed with the rack 19 to make the transmission bar 16 move rightwards on the slide rail 17, the ratchet gear 12 loses the limit of the limit block 14, the electric block 1 controls the falling of the lifting hook 6, and under the condition that the electric block 1 is electrified, in order to prevent the lifting hook 6 from falling accidentally, the ratchet gear 12 and the limiting block 14 on the transmission strip 16 can lock the rotating cylinder 13 to prevent the rotating cylinder from rotating.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides a hoist electric block protection device that falls, includes electric block (1) and support (3), its characterized in that, fixed mounting has crossbeam slide rail (2) on support (3), and electric block (1) is installed on crossbeam slide rail (2), and the below of electric block (1) is provided with lifting hook (6), the below of electric block (1) is provided with the bracket (4) that falls that is located support (3), and the left and right sides surface of the bracket (4) that falls all fixed mounting has servo motor (9), and fixed mounting has worm (7) on the motor shaft of servo motor (9), and the below of worm (7) is equipped with worm wheel (8) rather than the meshing, and worm wheel (8) rotate and connect in the left and right ends of the bracket (4) that falls;
the electric hoist is characterized in that a rotary drum (13) is arranged inside the electric hoist (1), a ratchet gear (12) is fixedly mounted at one end of the rotary drum (13), a sliding rail (17) fixedly mounted on the shell of the electric hoist (1) is arranged on one side of the ratchet gear (12), a transmission bar (16) is arranged on the sliding rail (17), a half gear (18) is fixedly connected to the front side of the ratchet gear (12), a rack (19) meshed with the half gear (18) is arranged below the half gear (18), the rack (19) is fixedly mounted on the left side surface of the transmission bar (16), and a limiting block (14) is arranged on the right side of the transmission bar (16).
2. The fall protection device for the electric hoist of the crane as claimed in claim 1, wherein the fall protection bracket (4) is connected in the bracket (3) in a sliding manner up and down, and the cushion pad (5) is arranged in the fall protection bracket (4).
3. The anti-falling protection device for the electric hoist of the crane as claimed in claim 1, wherein the anti-falling bracket (4) is provided with straight gears (11) fixedly connected with the worm gear (8) at the left and right rear sides, and toothed plates (10) engaged with the straight gears (11) are fixedly arranged at the left and right outer sides of the bracket (3).
4. The fall protection device for the electric hoist of the crane as claimed in claim 1, wherein the side of the transmission bar (16) is L-shaped, and the transmission bar (16) is connected to the slide rail (17) in a left-right sliding manner.
5. The fall protection device for the electric hoist of the crane as claimed in claim 1, wherein the upper part of the right side of the transmission bar (16) is rotatably connected with a rotating rod (15), the limiting block (14) is fixedly connected with the rotating rod (15), and the rotating rod (15) is provided with a torsion spring.
6. The fall protection device for the electric hoist of the crane as claimed in claim 1, wherein the controller (20) is fixedly mounted on the bracket (3), and the controller (20) is electrically connected with the two servo motors (9) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021375624.9U CN212982284U (en) | 2020-07-14 | 2020-07-14 | Anti-falling protection device for electric hoist of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021375624.9U CN212982284U (en) | 2020-07-14 | 2020-07-14 | Anti-falling protection device for electric hoist of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212982284U true CN212982284U (en) | 2021-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021375624.9U Active CN212982284U (en) | 2020-07-14 | 2020-07-14 | Anti-falling protection device for electric hoist of crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113879994A (en) * | 2021-10-18 | 2022-01-04 | 广州山屹机械有限公司 | Crane work warning device with protection function |
-
2020
- 2020-07-14 CN CN202021375624.9U patent/CN212982284U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113879994A (en) * | 2021-10-18 | 2022-01-04 | 广州山屹机械有限公司 | Crane work warning device with protection function |
| CN113879994B (en) * | 2021-10-18 | 2022-05-27 | 广州山屹机械有限公司 | Crane work warning device with protection function |
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