CN209758907U - Safety protection electric hoist - Google Patents
Safety protection electric hoist Download PDFInfo
- Publication number
- CN209758907U CN209758907U CN201822050363.2U CN201822050363U CN209758907U CN 209758907 U CN209758907 U CN 209758907U CN 201822050363 U CN201822050363 U CN 201822050363U CN 209758907 U CN209758907 U CN 209758907U
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- China
- Prior art keywords
- gear
- gear transmission
- transmission
- output
- gear drive
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- Expired - Fee Related
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Abstract
The utility model discloses a safety protection electric block, the jack-up subassembly is including the sprocket that connects gradually, winding chain, buffer stop and the lifting hook on the sprocket, be equipped with one-level gear drive and second grade gear drive in the reduction gearbox, one-level gear drive input shaft is connected with motor output shaft transmission, one-level gear drive output gear is established at one-level gear drive output shaft middle part the fixed two same second grade gear drive input gears that are equipped with of symmetry on the one-level gear drive output gear both ends shaft section, sprocket fixed mounting is at second grade gear drive output shaft middle part the symmetry sky cover has the output gear with second grade gear drive input gear engaged with on the sprocket both sides shaft section, clutch establishes on the shaft section at second grade gear drive output gear both ends. The utility model discloses simple structure, installation maintenance convenience, motor and transmission system are impaired when can preventing to overload effectively, improve electric block's fail safe nature.
Description
Technical Field
The utility model relates to an electric block, concretely relates to safety protection electric block belongs to hoisting machinery technical field.
Background
The electric chain hoist is a light and small hoisting device and is widely applied to industrial and mining enterprises, storage wharfs, production and assembly lines and other places. The existing electric chain hoist has the problems of complex speed reducing mechanism, difficult manufacturing of transmission parts, high cost and the like, and once a fault occurs during use, the electric chain hoist is very inconvenient to overhaul, and the working efficiency and the maintenance cost are influenced. In addition, this kind of small-size calabash often lacks the protection device who prevents overload, and in the actual operation in-process, when hanging article overload or article rise to the top and do not have in time shut down scheduling problem, can lead to motor and transmission system impaired, and fail safe nature is relatively poor, has great potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a safety protection electric block aiming at the defects existing in the prior art, which has simple structure and convenient installation and maintenance, and can effectively prevent the damage of a motor and a transmission system during overload and improve the safety and reliability of the electric block.
In order to achieve the above purpose, the utility model adopts the technical scheme that: motor 1, reducing gear box 2, jack-up subassembly 3 and clutch 4, wherein: the hoisting assembly 1 comprises a chain wheel 31, a chain 32 wound on the chain wheel, a buffer stop 33 and a lifting hook 34 which are sequentially connected, a primary gear transmission 21 and a secondary gear transmission 22 are arranged in the reduction gearbox 2, an input shaft of the primary gear transmission 21 is in transmission connection with an output shaft of the motor 1 through a coupler, an output gear of the primary gear transmission 21 is fixed in the middle of the output shaft of the primary gear transmission 21, two identical input gears of the secondary gear transmission 22 are symmetrically fixed on shaft sections at two ends of the output gear of the primary gear transmission 21, the chain wheel 31 is fixedly installed in the middle of the output shaft of the secondary gear transmission 22, two identical output gears meshed with the input gear of the secondary gear transmission 22 are symmetrically and freely sleeved on shaft sections at two sides of the chain wheel 31, and the clutch device 4 is arranged on shaft sections at two ends of the output gear.
Further, the motor 1 is an electromagnetic brake motor.
Further, a triple gear structure is adopted between the output gear of the primary gear transmission 21 and the input gear of the two secondary gear transmissions 22.
Further, the output gear of the secondary gear transmission 22 is mounted on the output shaft of the secondary gear transmission 22 through a needle bearing.
Furthermore, the clutch device 4 includes a clutch gear provided as an output gear of the secondary gear transmission 22, friction plates distributed at two ends of the clutch gear, and friction plates located between the friction plates and the end surface of the clutch gear, the friction plates and the friction plates are connected with the output shaft of the secondary gear transmission 22 through splines, and a compression nut for pressing the friction plates to clamp the clutch gear is arranged on the output shaft of the secondary gear transmission 22.
Further, a sleeve is installed between the clutch device 4 and the end face of the sprocket 31.
Furthermore, the transmission gears involved in the primary gear transmission 21 and the secondary gear transmission 22 are in the form of helical gear structures.
The utility model discloses the beneficial effect who brings is: the utility model relates to a safety protection electric block, its reduction gears is simple reasonable, the installation is maintained conveniently, and motor and transmission system are impaired when can preventing effectively from overloading to improve electric block's fail safe nature.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic view of the transmission structure of the present invention.
In the figure: 1-motor, 2-reduction box, 21-primary gear transmission, 22-secondary gear transmission, 3-hoisting component, 31-chain wheel, 32-chain, 33-buffer block, 34-hook and 4-clutch device.
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, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
As shown in fig. 1, the embodiment provides a safety protection electric hoist, which includes an electric motor 1, a reduction gearbox 2, a hoisting assembly 3 and a clutch device 4, wherein the hoisting assembly 1 includes a sprocket 31, a chain 32 wound on the sprocket, a buffer stop 33 and a hook 34 which are connected in sequence; a primary gear transmission 21 and a secondary gear transmission 22 are arranged in the reduction box 2 and used for realizing the purpose of speed reduction; a spline is arranged on an output shaft of the primary gear transmission 21, an output gear of the primary gear transmission 21 is arranged in the middle of the output shaft of the primary gear transmission 21 through the spline, two identical input gears of the secondary gear transmission 22 are symmetrically arranged on shaft sections at two ends of the output gear of the primary gear transmission 21 through the spline, preferably, the output gear of the primary gear transmission 21 and the input gears of the two secondary gear transmissions 22 adopt a triple gear structure form, and the output gear of the primary gear transmission 21 and the input gears of the two secondary gear transmissions 22 are fixed on the output shaft of the primary gear transmission 21; the input shaft of the primary gear transmission 21 is in transmission connection with the output shaft of the motor 1 through a coupler, preferably, the motor 1 adopts an electromagnetic brake motor, and the braking effect is rapid and reliable; a section of spline is arranged on an output shaft of the secondary gear transmission 22, the chain wheel 31 is connected to the middle part of the output shaft of the secondary gear transmission 22 through the spline, two identical output gears of the secondary gear transmission 22 are symmetrically and freely sleeved on shaft sections at two sides of the chain wheel 31, preferably, a needle bearing is arranged between the output gear of the secondary gear transmission 22 and a matched output shaft, and the idle running effect of the gears is ensured; the two-stage gear transmission 22 output shaft two-side shaft sections are also provided with external threads, the clutch device 4 is arranged on the shaft sections at the two ends of the two-stage gear transmission 22 output gear and comprises a clutch gear serving as the two-stage gear transmission 22 output gear, friction discs distributed at the two ends of the clutch gear and friction discs clamped between the friction discs and the end faces of the clutch gear, wherein the friction discs and the friction discs are connected to the two-stage gear transmission 22 output shaft through splines, and a gland nut is screwed to extrude the friction discs to enable the friction discs to clamp the clutch gear; and a sleeve is arranged between the clutch device 4 and the end surface of the chain wheel 31 to realize the axial fixation of the chain wheel 31.
As an optimized proposal of the utility model, the transmission gears in the primary gear transmission 21 and the secondary gear transmission 22 all adopt the helical gear structure form.
When the lifting hook works normally, the motor drives the speed reducing mechanism to work after being started, the speed reducing mechanism transmits the reduced rotating speed to the chain wheel through an output shaft of the speed reducing mechanism, and the chain wheel drives the chain to move so as to lift the lifting hook to lift heavy objects; when overload occurs, the slipping and separating phenomenon can be generated between the clutch gear and the friction plate on the secondary gear transmission output shaft, and at the moment, the secondary gear transmission output gear, namely the clutch gear, is in an idle running state, so that the secondary bevel gear transmission output shaft can not rotate, and further the chain wheel can not be driven to rotate, and the motor and the transmission system are protected from being damaged.
The above description is only for the preferred embodiment of the present invention, and not limited to the present invention, and any modifications or additions, equivalent replacements, or similar improvements made to the described embodiments in the technical field within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a safety protection electric block, includes motor (1), reducing gear box (2), jack-up subassembly (3) and clutch (4), its characterized in that: the hoisting assembly (3) comprises a chain wheel (31), a chain (32) wound on the chain wheel, a buffer stop block (33) and a lifting hook (34) which are sequentially connected, a primary gear transmission (21) and a secondary gear transmission (22) are arranged in the reduction gearbox (2), an input shaft of the primary gear transmission (21) is in transmission connection with an output shaft of the motor (1) through a coupler, an output gear of the primary gear transmission (21) is fixed in the middle of the output shaft of the primary gear transmission (21), two same input gears of the secondary gear transmission (22) are symmetrically fixed on shaft sections at two ends of the output gear of the primary gear transmission (21), the chain wheel (31) is fixed in the middle of the output shaft of the secondary gear transmission (22), two same output gears meshed with the input gears of the secondary gear transmission (22) are symmetrically and idly sleeved on shaft sections at two sides of the chain wheel (31, the clutch device (4) is arranged on shaft sections at two ends of an output gear of the secondary gear transmission (22), the clutch device (4) comprises a clutch gear arranged as the output gear of the secondary gear transmission (22), friction discs distributed at two ends of the clutch gear and friction discs positioned between the friction discs and the end face of the clutch gear, the friction discs and the friction discs are connected with the output shaft of the secondary gear transmission (22) through splines, a gland nut used for extruding the friction discs to enable the friction discs to clamp the clutch gear is arranged on the output shaft of the secondary gear transmission (22), and the motor (1) adopts an electromagnetic brake motor.
2. A safety protection electric block as claimed in claim 1, wherein: the output gear of the primary gear transmission (21) and the input gears of the two secondary gear transmissions (22) adopt a triple gear structure form.
3. A safety protection electric block as claimed in claim 1, wherein: and the output gear of the secondary gear transmission (22) is arranged on the output shaft of the secondary gear transmission (22) through a needle bearing.
4. A safety protection electric block as claimed in claim 1, wherein: and a sleeve is arranged between the clutch device (4) and the end surface of the chain wheel (31).
5. A safety-protected electric block according to claim 1 or 2, characterised in that: the transmission gears related in the primary gear transmission (21) and the secondary gear transmission (22) are in a helical gear structure form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822050363.2U CN209758907U (en) | 2018-12-07 | 2018-12-07 | Safety protection electric hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822050363.2U CN209758907U (en) | 2018-12-07 | 2018-12-07 | Safety protection electric hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209758907U true CN209758907U (en) | 2019-12-10 |
Family
ID=68746375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822050363.2U Expired - Fee Related CN209758907U (en) | 2018-12-07 | 2018-12-07 | Safety protection electric hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209758907U (en) |
-
2018
- 2018-12-07 CN CN201822050363.2U patent/CN209758907U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191210 Termination date: 20201207 |