CN213707583U - Explosion-proof type electric chain hoist - Google Patents

Abstract

The utility model discloses an explosion-proof type endless chain electric block, which comprises an electric control box, a main body box and a power box which are connected in sequence, wherein the main body box is provided with a first fixed plate and a second fixed plate which are arranged oppositely, long toothed shafts are arranged in mounting holes of the first fixed plate and the second fixed plate in a penetrating way, one end of each long toothed shaft is provided with a tooth socket, and the tooth socket is connected with a clutch component; the long gear shaft is further sleeved with a hoisting chain wheel, one end of the hoisting chain wheel is provided with a transmission gear, a convex groove located between the first fixing plate and the second fixing plate is further arranged on the hoisting chain wheel, a hoisting chain is wound in the convex groove, the tail end of the hoisting chain is connected with a lower lifting hook, a buffer spring connected with the lower lifting hook is sleeved on the hoisting chain, one end, far away from the lower lifting hook, of the buffer spring is connected with the ejecting block, and a limit switch is arranged below a chain inlet and outlet of the main box. The utility model adopts the above structure's explosion-proof type ring chain electric block, the lifting hook rises to high upper limit back electric block can automatic stop, guarantees electric block and the safety of lifting by crane article.

Description

Explosion-proof type electric chain hoist

Technical Field

The utility model relates to an electric block technical field especially relates to an explosion-proof type ring chain electric block.

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 is widely applied to hoisting heavy objects, and the electric hoist can automatically stop after a lifting hook of the electric hoist rises to the upper limit of the height, otherwise, the electric hoist and the hoisted objects are damaged once operators neglect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an explosion-proof type ring chain electric block, the lifting hook rises to high upper limit back electric block can the automatic shutdown, guarantees electric block and lifts by crane the safety of article.

In order to achieve the purpose, the utility model provides an explosion-proof type endless chain electric block, which comprises an electric control box, a main body box and a power box which are connected in sequence, wherein a first fixing plate and a second fixing plate which are arranged oppositely are arranged on the main body box, a long toothed shaft is arranged in a mounting hole of the first fixing plate and the second fixing plate in a penetrating way, the long toothed shaft is close to one end of the electric control box and is provided with a tooth groove which is circumferentially and uniformly distributed, the tooth groove is connected with a clutch component, the clutch component comprises a clutch gear shaft which is arranged in parallel with the long toothed shaft, an external spline, a clutch gear set, a clutch pressing sleeve, a clutch shaft pressing sleeve and an adjusting nut are sequentially arranged on the clutch gear shaft, the clutch gear set comprises a clutch large gear which is connected with the tooth groove in a meshing way, and clutch friction plates, a clutch pressing plate and a clutch spring arch, the inner hole of the clutch pressing plate is meshed with the clutch gear shaft;

it is equipped with hoisting sprocket still to overlap on the long tooth axle, hoisting sprocket's one end is equipped with drive gear, drive gear with external splines meshing connects, it is located still to be equipped with on the hoisting sprocket first fixed plate with tongue between the second fixed plate, around being equipped with the jack-up chain in the tongue, the end and the lower lifting hook of jack-up chain are connected, the last cover of jack-up chain be equipped with the buffer spring that the lower lifting hook is connected, buffer spring keeps away from the one end and the kicking block of lower lifting hook are connected, the business turn over chain mouth of main part case has limit switch, limit switch's contact with the kicking block corresponds the setting.

Preferably, be equipped with the motor in the headstock, the rotor shaft of motor with long tooth hub connection, rotor one side of motor is connected with the brake seat through braking spring, be equipped with the brake block on the brake seat, the brake block with be located the brake pot structure phase-match of headstock one end.

Preferably, the limit switch and the motor are both connected with the electric control box.

Preferably, a fixing shaft located outside the main body box is arranged between the first fixing plate and the second fixing plate, and an upper lifting hook is arranged on the fixing shaft.

Therefore, the utility model adopts the above structure explosion-proof type ring chain electric block, the lifting hook rises to high upper limit back electric block can the automatic shutdown, guarantees electric block and lifts by crane the safety of article.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic diagram of an embodiment of the explosion-proof type electric chain hoist of the present invention;

fig. 2 is a schematic diagram of an embodiment of a clutch assembly in the explosion-proof electric chain hoist of the present invention.

Reference numerals

1. An electrical control box; 2. a main body case; 3. a power box; 4. a first fixing plate; 5. a second fixing plate; 6. an upper hook; 7. a long pinion shaft; 8. a tooth socket; 9. a clutch gear shaft; 10. an external spline; 11. a clutch gear set 111, a clutch gearwheel 112, a clutch friction plate 113, a clutch pressing plate 114 and a clutch spring arch plate; 12. a clutch pressing sleeve; 13. a clutch shaft pressing sleeve 14 and an adjusting nut; 15. a hoisting sprocket; 16. a transmission gear; 17. a convex groove; 18. a hoisting chain; 19. a lower hook 20, a buffer spring; 21. the device comprises a top block 22, a limit switch 23, a rotor shaft 24, a rotor 25 and a brake spring; 26. a brake base 27, a brake pad; 28. a brake pot.

Detailed Description

The following describes embodiments of the present invention with reference to the accompanying drawings.

Fig. 1 is the utility model discloses the schematic diagram of explosion-proof type ring chain electric block embodiment, fig. 2 is the utility model discloses the schematic diagram of clutch module's among the explosion-proof type ring chain electric block embodiment, as shown in the figure, an explosion-proof type ring chain electric block, including the electrical control box 1 that connects gradually, main part case 2 and headstock 3, realized whole sealed structure, effectively keep apart the inside and outside circulation of air of each box, even electric block breaks down when applying under the special environment also can play the explosion-proof effect of isolation effectively, guarantee safety, effectively prevent unexpected emergence. Be equipped with relative first fixed plate 4 and the second fixed plate 5 that sets up on main part case 2, be equipped with between first fixed plate 4 and the second fixed plate 5 and be located the outside fixed axle of main part case 2, be equipped with lifting hook 6 on the fixed axle, go up lifting hook 6 and be used for fixing whole electric block. The long toothed shaft 7 penetrates through the mounting holes of the first fixing plate 4 and the second fixing plate 5, one end, close to the electric control box 1, of the long toothed shaft 7 is provided with tooth grooves 8 which are evenly distributed in the circumferential direction, and the tooth grooves 8 are connected with the clutch assembly. The clutch component comprises a clutch gear shaft 9 arranged in parallel with the long gear shaft 7, and an external spline 10, a clutch gear set 11, a clutch pressing sleeve 12, a clutch shaft pressing sleeve 13 and an adjusting nut 14 are sequentially arranged on the clutch gear shaft 9. The clutch gear set 11 comprises a clutch large gear 111 meshed with the tooth socket 8, two sides of the clutch large gear 111 are sequentially and symmetrically provided with a clutch friction plate 112, a clutch pressing plate 113 and a clutch spring arch plate 114, the clutch friction plate 112 is used for preventing the electric hoist from being lifted overweight, when the heavy object is overweight, the friction force on the clutch friction plate 112 is insufficient and cannot rotate along with the clutch large gear 111, the clutch pressing plate 113 cannot rotate, and then the clutch pressing plate 113 cannot drive the clutch gear shaft 9 to rotate. The inner hole of the clutch pressing plate 113 is meshed with the clutch gear shaft 9, so that the clutch pressing plate 113 can drive the clutch gear shaft 9 to rotate when the clutch pressing plate 113 rotates.

The long gear shaft 7 is also sleeved with a hoisting chain wheel 15, one end of the hoisting chain wheel 15 is provided with a transmission gear 16, and the transmission gear 16 is meshed with the external spline 10. The hoisting chain wheel 15 is also provided with a convex groove 17 positioned between the first fixing plate 4 and the second fixing plate 5, a hoisting chain 18 is wound in the convex groove 17, and the tail end of the hoisting chain 18 is connected with a lower lifting hook 19. The cover is equipped with buffer spring 20 who is connected with lower lifting hook 19 on the jack-up chain 18, and buffer spring 20 keeps away from down lifting hook 19's one end and is connected with kicking block 21, and buffer spring 20 has the cushioning effect, can prevent that kicking block 21 from taking place hard collision with the shell of main part case 2, and then causes electric block's damage, influences electric block's life. Main part case 2's business turn over chain mouth has limit switch 22, and limit switch 22 is connected with electrical control box 1, and limit switch 22's contact corresponds the setting with kicking block 21, and after kicking block 21 triggered limit switch 22's contact, limit switch 22 transmitted the signal for electrical control box 1, and electrical control box 1 cuts off the power of motor, makes electric block stop to continue to lift by crane, prevents that the heavy object from causing the extrusion harm to electric block.

The power box 3 is internally provided with a motor which is connected with the electric control box 1, and the electric control box 1 can control the on-off of the motor. The rotor shaft 23 of the motor is connected with the long toothed shaft 7, one side of the rotor 24 of the motor is connected with a brake base 26 through a brake spring 25, a brake block 27 is arranged on the brake base 26, and the brake block 27 is structurally matched with a brake pot 28 located at one end of the power box 3. The motor generates magnetism when being electrified, the brake base 26 moves by leaning on the motor under the action of the magnetic force, the brake block 27 is separated from the brake pot 28, at the moment, the electric hoist can lift and descend heavy objects, the brake spring 25 pushes the brake base 26 to the original position after the motor is powered off, the brake block 27 is pressed against the brake pot 28 and cannot rotate, and at the moment, the heavy objects cannot rise or fall.

When the lifting device is used, the motor is electrified, the brake pad 27 is separated from the brake pot 28, the rotor shaft 23 drives the long toothed shaft 7 to rotate, the tooth groove 8 on the long toothed shaft 7 drives the clutch large gear 111 to rotate, the clutch large gear 111 drives the clutch pressing sheet 113 to rotate under the action of the clutch friction sheet 112, the clutch pressing sheet 113 drives the clutch gear shaft 9 to rotate, the external spline 10 on the clutch gear shaft 9 drives the transmission gear 16 to rotate, and the transmission gear 16 drives the lifting sprocket 15 to rotate, so that the lifting of a heavy object is realized. After the heavy object rises to the upper limit of height, kicking block 21 triggers limit switch 22's contact, and limit switch 22 gives electrical control box 1 with signal transmission, and electrical control box 1 cuts off the power of motor, makes electric block stop to continue to lift by crane, prevents that the heavy object from causing the extrusion harm to electric block, has guaranteed electric block and the safety of lifting by crane the article.

Therefore, the utility model adopts the above structure explosion-proof type ring chain electric block, the lifting hook rises to high upper limit back electric block can the automatic shutdown, guarantees electric block and lifts by crane the safety of article.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.

Claims (4)

1. The utility model provides an explosion-proof type ring chain electric block, includes electrical control box, main part case and the headstock that connects gradually, its characterized in that: the main body box is provided with a first fixing plate and a second fixing plate which are oppositely arranged, long toothed shafts penetrate through mounting holes of the first fixing plate and the second fixing plate, one ends of the long toothed shafts, which are close to the electrical control box, are provided with tooth grooves which are uniformly distributed in the circumferential direction, the tooth grooves are connected with a clutch assembly, the clutch assembly comprises a clutch gear shaft which is parallel to the long toothed shafts, an external spline, a clutch gear set, a clutch pressing sleeve, a clutch shaft pressing sleeve and an adjusting nut are sequentially arranged on the clutch gear shaft, the clutch gear set comprises a clutch large gear which is meshed with the tooth grooves, clutch friction plates, clutch pressing plates and clutch spring arch plates are sequentially and symmetrically arranged on two sides of the clutch large gear, and inner holes of the clutch pressing plates are meshed with the clutch gear shaft;

it is equipped with hoisting sprocket still to overlap on the long tooth axle, hoisting sprocket's one end is equipped with drive gear, drive gear with external splines meshing connects, it is located still to be equipped with on the hoisting sprocket first fixed plate with tongue between the second fixed plate, around being equipped with the jack-up chain in the tongue, the end and the lower lifting hook of jack-up chain are connected, the last cover of jack-up chain be equipped with the buffer spring that the lower lifting hook is connected, buffer spring keeps away from the one end and the kicking block of lower lifting hook are connected, the business turn over chain mouth of main part case has limit switch, limit switch's contact with the kicking block corresponds the setting.

2. The explosion-proof type electric chain block of claim 1, characterized in that: the power box is internally provided with a motor, a rotor shaft of the motor is connected with the long gear shaft, one side of the rotor of the motor is connected with a brake seat through a brake spring, a brake pad is arranged on the brake seat, and the brake pad is matched with a brake pot structure at one end of the power box.

3. The explosion-proof type electric chain block of claim 2, characterized in that: the limit switch and the motor are connected with the electric control box.

4. The explosion-proof type electric chain block of claim 3, characterized in that: and a fixed shaft positioned outside the main body box is arranged between the first fixed plate and the second fixed plate, and an upper lifting hook is arranged on the fixed shaft.

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