CN203865908U - Crane - Google Patents
Crane Download PDFInfo
- Publication number
- CN203865908U CN203865908U CN201420298081.3U CN201420298081U CN203865908U CN 203865908 U CN203865908 U CN 203865908U CN 201420298081 U CN201420298081 U CN 201420298081U CN 203865908 U CN203865908 U CN 203865908U
- Authority
- CN
- China
- Prior art keywords
- brake
- ratchet
- ratchet wheel
- electromagnet
- pawl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a crane comprising a drawing arm mechanism and a brake device arranged on the drawing arm mechanism. The brake device comprises a ratchet wheel coaxially and fixedly arranged on one side of a brake disc, and a pawl matched with the ratchet wheel is arranged on one side of the ratchet wheel. The ratchet wheel coaxial with the brake disc is matched with the pawl, thus, the brake disc can be prevented from rotating when an original motor brake and a hydraulic clamp fail in braking, and safety coefficient when the crane halts is increased. A driving wheel is coaxially arranged on one side of the ratchet wheel, the pawl is rotationally matched on an engine base through a rotary shaft, an electromagnet is connected to one end of the rotary shaft, and a friction plate is arranged on the head of a movable iron core. After the electromagnet is powered, the movable iron core extends out of a shell, and the friction plate contacts with the driving wheel. During operation, when a brake caliper and a motor brake break down, the ratchet wheel and the driving wheel rotate anticlockwise, the driving wheel drives the friction plate to swing clockwise, and the friction plate drives the pawl to rotate clockwise through the rotary shaft, so that the pawl and the ratchet wheel contact and are locked, and rotation of the brake disc is stopped.
Description
Technical field
The utility model relates to a kind of tower crane, the hoisting crane that especially adopts ratchet braking to brake.
Background technology
Existing tower crane comprises the torque arm mechanism for the weight of slinging, and for slinging after weight and being fixed on certain height, need to adopt brake equipment to fix the drag-line of the connection weight in torque arm mechanism; Two cover brake equipments are generally all equipped with in existing torque arm mechanism,, comprise electromotor brake and hydraulic tongs, in the time that hoisting crane stops lifting, first speed end electromotor brake stopping brake, then low speed end hydraulic tongs locking protection, makes torque arm mechanism in safety arrestment state; But this two covers brake equipment all needs periodic inspection brake clearance, friction lining thickness etc., in the time that this two covering device all goes wrong, will occur safety misadventure.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of hoisting crane, and the safety factor in the time stopping is higher.
In order to solve the problems of the technologies described above, the utility model provides a kind of hoisting crane, comprise torque arm mechanism and be located at the brake equipment in this torque arm mechanism, this brake equipment comprises: be coaxially fixed at the ratchet of brake disc one side, a side of ratchet is provided with the ratchet being mated.
One side of described ratchet is coaxially provided with drive wheel, described ratchet by rotating shaft normal-running fit on support, the end of rotating shaft is fixedly connected with electromagnet, the head of the movable core of this electromagnet is provided with friction lining, after electromagnet energising, described movable core stretches out the housing of this electromagnet, and this friction lining is contacted with drive wheel.
With respect to prior art, the technique effect the utlity model has is: the ratchet braking that (1) hoisting crane of the present utility model adopts, match with ratchet with the ratchet of the coaxial setting of brake disc, when original electromotor brake and hydraulic tongs are during at braking failure, can stop the rotation of brake disc, improve the safety factor of hoisting crane in the time stopping.(2) when the ratchet braking in the utility model is worked, if brake clamp and electromotor brake lost efficacy, ratchet and drive wheel rotate counterclockwise, drive wheel will drive friction lining cw to swing, friction lining drives ratchet to clockwise rotate by rotating shaft, ratchet is contacted and locking with ratchet, thereby stop brake disc to rotate, improved the safety factor of hoisting crane in the time stopping.
Brief description of the drawings
In order to clearly demonstrate innovative principle of the present utility model and the technical advantage than existing product thereof, by applying the limiting examples of described principle, possible embodiment is described by means of accompanying drawing below.In the drawings:
Fig. 1 is the constructional drawing of crane braking device of the prior art;
Fig. 2 is the constructional drawing of the hoisting crane ratchet braking in the utility model.
Detailed description of the invention
Tower crane of the present utility model comprises torque arm mechanism and be located at the brake equipment in this torque arm mechanism, and brake equipment comprises: ratchet 6, ratchet 7, friction lining 8, electromagnet 9, drive wheel 10, rotating shaft 11, support 12.
As Fig. 1 to 2, the torque arm mechanism of tower crane comprises the brake clamp 2 and electromotor brake 3 be located in frame 1, and brake clamp 2 is for brake disc 4 is braked, and electromotor brake 3 is in transmission connection with brake disc 4.
One side of described brake disc 4 is coaxially fixed with ratchet 6 and drive wheel 10, described frame 1 is provided with support 12, ratchet 7 by rotating shaft 11 normal-running fiies on this support 12, arc friction lining 8 is connected with the head of the movable core of electromagnet 9, the housing of electromagnet 9 is fixedly connected with the end of rotating shaft 11, between ratchet 7 and electromagnet 9, there are 30 ° of-90 ° of angles (preferably 45 °), after electromagnet 9 energisings, described movable core stretches out the housing of this electromagnet 9, and this friction lining 8 is contacted with drive wheel 10.
The working process of ratchet braking comprises: in the time that hoisting crane is worked, in the housing of the iron core retraction electromagnet 9 of electromagnet 9, friction lining 8 does not contact with drive wheel 10, and ratchet 6 does not contact with ratchet 7; After hoisting crane stops, electromagnet 9 is switched on, the iron core of electromagnet 9 stretches out housing and friction lining 8 is contacted with drive wheel 10, if above-mentioned brake clamp 2 lost efficacy with electromotor brake 3, ratchet 6 rotates counterclockwise with drive wheel 10, and drive wheel 10 will drive friction lining 8 cws to swing, and friction lining 8 drives ratchet 7 to clockwise rotate by rotating shaft 11, ratchet 7 contacted with ratchet 6 and play locking effect, thereby stoping brake disc 4 to rotate.
Obviously, above-described embodiment is only for the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And these belong to apparent variation that spirit of the present utility model extended out or variation still among protection domain of the present utility model.
Claims (1)
1. a hoisting crane, comprises torque arm mechanism and is located at the brake equipment in this torque arm mechanism, it is characterized in that this brake equipment comprises: be coaxially fixed at the ratchet (6) of brake disc (4) one sides, a side of ratchet (6) is provided with the ratchet (7) being mated;
One side of described ratchet (6) is coaxially provided with drive wheel (10), described ratchet (7) by rotating shaft (11) normal-running fit on support (12), the end of rotating shaft (11) is fixedly connected with electromagnet (9), the head of the movable core of this electromagnet (9) is provided with friction lining (8), after electromagnet (9) energising, described movable core stretches out the housing of this electromagnet (9), and this friction lining (8) is contacted with drive wheel (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420298081.3U CN203865908U (en) | 2014-06-05 | 2014-06-05 | Crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420298081.3U CN203865908U (en) | 2014-06-05 | 2014-06-05 | Crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203865908U true CN203865908U (en) | 2014-10-08 |
Family
ID=51646887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420298081.3U Expired - Fee Related CN203865908U (en) | 2014-06-05 | 2014-06-05 | Crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203865908U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311032A (en) * | 2017-08-24 | 2017-11-03 | 芜湖市长江起重设备制造有限公司 | A kind of bridge crane suspender automatic coupling/decoupling device |
-
2014
- 2014-06-05 CN CN201420298081.3U patent/CN203865908U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311032A (en) * | 2017-08-24 | 2017-11-03 | 芜湖市长江起重设备制造有限公司 | A kind of bridge crane suspender automatic coupling/decoupling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20170605 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |