CN101549838A - Hoist double-trolley electric hoist - Google Patents
Hoist double-trolley electric hoist Download PDFInfo
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- CN101549838A CN101549838A CNA2009100689935A CN200910068993A CN101549838A CN 101549838 A CN101549838 A CN 101549838A CN A2009100689935 A CNA2009100689935 A CN A2009100689935A CN 200910068993 A CN200910068993 A CN 200910068993A CN 101549838 A CN101549838 A CN 101549838A
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- drg
- brake
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- hoist
- double
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Abstract
The present invention relates to a hoist double-trolley electric hoist which comprises the following components: a motor with a brake, a speed reducer installed on the output shaft of motor, a bracket and a roll device installed on the bracket. The invention is characterized in that the brake of motor is a first brake. A second brake is installed at the front part of the first brake. The braking disc of the second brake is installed on the output shaft of motor through a key. The second brake is installed in the casing of motor. The roll device comprises a reel and a transmission shaft. One end of transmission shaft in the roll device is connected with the motor side. The other end of transmission shaft is connected with a braking sleeve through a connecting shaft. The braking sleeve is installed with a hydraulic braking disc through a fastener. The lower end of hydraulic braking disc is installed with a third brake. The friction plates of third brake are installed at two sides of hydraulic braking disc. Therefore the hoist double-trolley electric hoist of the invention not only can prevent the accident caused by the braking failure, but also has the advantages of small volume, simple structure, convenient installation, greatly increased safety performance and saved space.
Description
Technical field
The invention belongs to hoisting crane manufacturing technology field, particularly relate to a kind of hoist double-trolley electric hoist.
Background technology
Hoisting crane is widely used in fields such as metallurgy, machinery, chemical industry, oil, the energy, and electric block is a component part important in the hoisting crane, because the particularity of many working spaces, the user worries that goods can cause the inefficacy of drg for a certain reason in the process of lifting, loading and unloading, thereby brings unnecessary loss.In addition, also need to save the spatial dimension that electric block is installed.Therefore, not only need the drg that add be installed on electric block, avoid the generation of accident.Simultaneously, also to satisfy the spatial dimension that electric block is installed.Existing electric block mainly adopts single braking to brake, and it is poor that this brake mode has braking effect, the low deficiency that waits of safety performance.
Summary of the invention
The present invention is for solving the hoist double-trolley electric hoist that the technical matters that exists in the known technology provides a kind of simple in structure, easy installation and removal, raising safety performance, saves installing space.
The technical scheme that the present invention takes for the technical matters that exists in the solution known technology is:
A kind of hoist double-trolley electric hoist, comprise the motor that has drg, the retarder of installing on the output shaft of motor, the roll device of installing on support and the support, it is characterized in that: the drg that described motor carries is first drg, in the first drg front portion second drg is installed, the brake disc of second drg is installed on the motor output shaft by key, second drg is installed in the motor housing by fastener, described roll device comprises reel and transmission shaft, transmission shaft one end in the roll device links to each other with motor side, the other end of transmission shaft connects braking sleeve by adapter shaft, by fastener the hydraulic braking dish is installed on the braking sleeve, the lower end of hydraulic braking dish is equipped with the 3rd drg, and the friction lining of the 3rd drg is installed in the both sides of hydraulic braking dish.
The present invention can also adopt following technical measures:
Described first drg adopts the taper ac brake.
Described second drg adopts the DC-disc type drg.
Described the 3rd drg adopts hydraulic brake.
The gap of the friction lining of described the 3rd drg and hydraulic braking dish both sides is 3～5mm.
Several shear-stable pins are installed on the described braking sleeve.
Advantage and good effect that the present invention has are: owing to added second drg in the present invention on motor, avoided the loss that brings because of first misfunctioning of brake, simultaneously, improved the present invention's safety itself.Increased the DC-disc type drg in the roll device outside, even motor lost efficacy like this, first, second drg is not worked simultaneously, the 3rd drg that is installed in the roll device outside can be braked roll device at once, and the shared space of the 3rd drg is less, be more convenient for adjusting, the dismounting maintenance.The present invention not only satisfied hoisting crane safety arrestment in normal operation, guaranteed the high efficiency of goods handling, loading and unloading simultaneously.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is an A-A cutaway view among Fig. 1;
Fig. 3 is a B-B cutaway view among Fig. 1.
Among the figure: 1, motor; 1-2, first drg; 1-21, brake disc; 1-22, Brake Block; 1-3, motor output shaft; 2, retarder; 3, support; 4, roll device; 5, second drg; 5-1, brake disc; 5-2, dc coil; 5-3, pressure spring; 5-4, Brake Block; 6, adapter shaft; 7, braking sleeve; 8, bolt; 9, hydraulic braking dish; 10, the 3rd drg; 10-1, friction lining; 11, pin.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1 to Fig. 3, a kind of hoist double-trolley electric hoist, comprise the roll device of installing on retarder 2, support 3 and the support of installing on the output shaft of the motor 1 that has drg, motor 4, the drg that carries of wherein said motor is the first drg 1-2, and this drg adopts the taper ac brake.Its principle of work: when power connection, the moment motor shaft that rotates drives first drg and does longitudinal travel, first drg is opened, motor shaft reposition under the pressure spring effect behind the supply disconnecton, brake disc 1-21 and Brake Block 1-22 produce friction, thereby play the effect of braking, lock torque changes with load, and the big more lock torque of load is big more.In the first drg front portion second drg 5 is installed, this drg adopts the DC-disc type drg.The brake disc 5-1 of second drg is installed on the motor output shaft 1-3 by key, second drg is installed in the motor housing by fastener, its principle of work: work as power connection, dc coil 5-2 inhales brake disc 5-1 together, pressure spring 5-3 is compressed, and this moment, brake disc 5-2 can free without hindrance rotation.When otherwise power supply was cut off, pressure spring 5-3 pushed brake disc 5-1 to Brake Block 5-4, made it to compress mutually, and consequent friction moment is prevented load, and this moment, second drg was in braking mode.Above-mentioned first, second drg is to realize braking function by current control motor high speed shaft.Described roll device 4 comprises reel and transmission shaft, transmission shaft one end in the roll device links to each other with motor side, the other end of transmission shaft connects braking sleeve 7 by adapter shaft 6, by fastener bolt 8 hydraulic braking dish 9 is installed on the braking sleeve 7, the lower end of hydraulic braking dish 9 is equipped with the 3rd drg 10, the friction lining 10-1 of the 3rd drg is installed in the both sides of hydraulic braking dish 9, and the gap of friction lining and hydraulic braking dish both sides is 3～5mm.Present embodiment adopts 3mm.In order to prevent that lock torque from crossing senior general's bolt 8 and cutting off, so when braking sleeve 7 is connected with hydraulic braking dish 9, increased several shear-stable pins 11.The brake structure that first, second, third drg in the said structure is adopted all belongs to general-duty product structure on the market.
Owing to added second drg on motor in the present invention, avoided the loss that brings because of first misfunctioning of brake, simultaneously, improved the present invention's safety itself.Increased by the 3rd drg in the roll device outside, even motor lost efficacy like this, first, second drg is not worked simultaneously, the 3rd drg that is installed in the roll device outside can be braked roll device at once, and the shared space of the 3rd drg is less, be more convenient for adjusting, the dismounting maintenance.The present invention not only satisfied hoisting crane safety arrestment in normal operation, guaranteed the high efficiency of goods handling, loading and unloading simultaneously.
Claims (6)
1. hoist double-trolley electric hoist, comprise the motor that has drg, the retarder of installing on the output shaft of motor, the roll device of installing on support and the support, it is characterized in that: the drg that described motor carries is first drg, in the first drg front portion second drg is installed, the brake disc of second drg is installed on the motor output shaft by key, second drg is installed in the motor housing by fastener, described roll device comprises reel and transmission shaft, transmission shaft one end in the roll device links to each other with motor side, the other end of transmission shaft connects braking sleeve by adapter shaft, by fastener the hydraulic braking dish is installed on the braking sleeve, the lower end of hydraulic braking dish is equipped with the 3rd drg, and the friction lining of the 3rd drg is installed in the both sides of hydraulic braking dish.
2. hoist double-trolley electric hoist according to claim 1 is characterized in that: described first drg adopts the taper ac brake.
3. hoist double-trolley electric hoist according to claim 1 is characterized in that: described second drg adopts the DC-disc type drg.
4. hoist double-trolley electric hoist according to claim 1 is characterized in that: described the 3rd drg adopts hydraulic brake.
5. hoist double-trolley electric hoist according to claim 1 is characterized in that: the gap of the friction lining of described the 3rd drg and hydraulic braking dish both sides is 3～5mm.
6. hoist double-trolley electric hoist according to claim 1 is characterized in that: several shear-stable pins are installed on the described braking sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100689935A CN101549838A (en) | 2009-05-25 | 2009-05-25 | Hoist double-trolley electric hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100689935A CN101549838A (en) | 2009-05-25 | 2009-05-25 | Hoist double-trolley electric hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101549838A true CN101549838A (en) | 2009-10-07 |
Family
ID=41154372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100689935A Pending CN101549838A (en) | 2009-05-25 | 2009-05-25 | Hoist double-trolley electric hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101549838A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106672811A (en) * | 2016-12-13 | 2017-05-17 | 常守祥 | Novel lightweight bridge crane |
| CN107434216A (en) * | 2017-04-11 | 2017-12-05 | 广州元凛建筑工程技术开发有限公司 | A kind of firm power equipment |
-
2009
- 2009-05-25 CN CNA2009100689935A patent/CN101549838A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106672811A (en) * | 2016-12-13 | 2017-05-17 | 常守祥 | Novel lightweight bridge crane |
| CN107434216A (en) * | 2017-04-11 | 2017-12-05 | 广州元凛建筑工程技术开发有限公司 | A kind of firm power equipment |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20091007 |