CN205500597U - A economizer for harbour hoisting equipment - Google Patents
A economizer for harbour hoisting equipment Download PDFInfo
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- CN205500597U CN205500597U CN201620245231.3U CN201620245231U CN205500597U CN 205500597 U CN205500597 U CN 205500597U CN 201620245231 U CN201620245231 U CN 201620245231U CN 205500597 U CN205500597 U CN 205500597U
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Abstract
The utility model provides an economizer for harbour hoisting equipment, utilizes the energy storage weight to convert electric energy repayment to dc bus to as the gesture transformation of energy receiver of hoisting accessory and heavy object, the potential energy of hoisting accessory and heavy object, and the energy storage of energy storage weight is sent again to the repayment electric energy, does not have the problem with AC electric network non -synchronous, and energy recovering efficiency is high, can carry out energy storage in various degree to the weight size of different hoisting accessory and heavy object, and hoisting accessory and heavy object and energy storage weight adversive movement simultaneously basically, the energy utilization height. Safety protection sets up and to go on that the automation is supported and be spacing the energy storage weight in addition, plays to prevent the strong wind, prevent safety protection such as overtravel.
Description
Technical field
This utility model relates to a kind of harbour lifting equipment field, is specifically related to a kind of energy saver for harbour lifting equipment.
Background technology
At present, in known various harbour lifting equipments, it is auxiliary based on friction stopping device, with electric braking resistance or AC-DC-AC stream inversion feeding braking device when the weight of lifting declines braking.Use frictional damping or electric braking resistance that heavy load potential energy can be caused to be converted into heat energy to waste, frictional damping also makes friction plate very fast because of deterioration, braking resistor there is also the problem burnt because of overheated, use AC-DC-AC stream inversion regenerative braking mode, synchronous rotational speed is exceeded when weight declines motor speed, the electric current of motor regeneration is transmitted back to DC side, another mistake becomes alternating current feedback grid, the alternating current of inversion requires and synchronized, meet frequency the most at any time consistent, phase place is consistent, wave mode these feedback conditions consistent, the control circuit complexity cost of inversion feedback module is high at present, but heavy load potential energy recovery utilization rate is the highest.It addition, for gravity balance, some harbour lifting equipments are configured with fixed balancing weight at its afterbody, and wherein part balancing weight can be set to liftable energy storage weight.
Utility model content
For the not enough shortcoming overcoming the heavy load potential energy of existing harbour lifting equipment fully not recycle, this utility model provides a kind of energy saver for harbour lifting equipment.
The technical solution that this utility model uses is: a kind of energy saver for harbour lifting equipment, including energy storage weight and weight elevator group, described energy storage weight is connected by steel wire rope between weight elevator group, and described weight elevator group uses ac-dc-ac inverter module drive.
Described ac-dc-ac inverter module drive includes rectification module, dc bus and inversion module, drive the motor M2 of energy storage weight jointly by PLC control with driving the motor M1 of boom hoisting, control, described motor M1, motor M2 are connected with PLC, described motor M1, being additionally provided with the first inversion module and the second inversion module between motor M2 and PLC, described PLC is also associated with load sensor.
Being additionally provided with voltage relay between described rectification module and PLC, described rectification module is connected by dc bus DC with PLC, and is connected with the dc bus of motor M1, motor M2.
The support fixed mechanism for supporting energy storage weight it is additionally provided with between described energy storage weight and top sheave group and support.
Described support fixed mechanism includes that weight supports tank tower, described weight supports tank tower and includes movable supporting block, spring rod assembly and flexible push rod, described movable supporting block passes through hinge on the bearing that weight supports tank tower, described spring rod assembly is connected with movable supporting block with difference one end of flexible push rod, the other end is fixed on weight and supports the upper end of tank tower, and the upper end of described energy storage weight is additionally provided with the gusseted block adaptive with movable supporting block.
Described weight is additionally provided with the limit switch limiting energy storage weight maximum sling height in supporting tank tower.
Described steel wire rope two ends are connected with top sheave group and support 3 and reel 16 respectively, and the pulley walking around energy storage weight 6 carries out lift heavy to energy storage weight 6.
Described weight elevator group includes motor M2 and drives the driving reel of steel wire rope lifting energy storage weight, is additionally provided with decelerator between described motor M2 and driving reel.
The deadman's brake for energy storage weight being carried out brake hard it is additionally provided with between described motor M2 and decelerator.
Described driving is additionally provided with the rotary encoder providing speed feedback signal and restriction energy storage weight maximum to transfer stroke on reel.
The beneficial effects of the utility model are: a kind of energy saver for harbour lifting equipment, utilize energy storage weight as the conversion receiving body of boom hoisting and the potential energy of weight, the potential energy converting and energy of boom hoisting and weight becomes electric energy feedback to dc bus, feedback electric energy is then sent through energy storage weight energy storage, there is not problem nonsynchronous with AC network, energy recovery rate is high；Energy storage in various degree can be carried out for the weight size of different boom hoistings and weight, and boom hoisting and weight and the substantially simultaneously adverse movement of energy storage weight, capacity usage ratio is high.Additionally safeguard protection arranges and can automatically support energy storage weight with spacing, plays anti-strong wind, prevents the safeguard protections such as overtravel.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation, is also the schematic diagram of this utility model embodiment.
Fig. 2 is this utility model ac-dc-ac inverter module principle schematic diagram.
Fig. 3 is F direction view in this utility model Fig. 1.
Fig. 4 is A direction view in this utility model Fig. 1.
Fig. 5 is enlarged drawing at B in this utility model Fig. 1.
Fig. 6 is that this utility model energy storage weight supports schematic diagram automatically.
Fig. 7 is another structural representation of this utility model.
1-harbour lifting equipment in figure, 2-load sensor, 3-top sheave group and support, 4-weight elevator group, 5-weight supports tank tower, 6-energy storage weight, 7-balancing weight, 8-boom hoisting, 9-rectification module, 10-voltage relay, 11-PLC, 12-the first inversion module, 13-the second inversion module, 14-deadman's brake, 15-decelerator, 16-drives reel, 17-rotary encoder, 18-steel wire rope, 19-limit switch, 20-spring rod assembly, 21-stretches push rod, 22-bearing pin, 23-movable supporting block, 24-gusseted block.
Detailed description of the invention
For the deficiency overcoming the heavy load potential energy of existing harbour lifting equipment fully not recycle, this utility model provides a kind of energy saver for harbour lifting equipment, including weight elevator group 4 and energy storage weight 6, it is connected by steel wire rope 18 between described energy storage weight 6 and weight elevator group 4, described weight elevator group 4 uses ac-dc-ac inverter module drive, harbour lifting equipment 1 first wife's balancing weight 7 has deducted moiety by weight, add liftable energy storage weight 6, be capable of the gravity balance of port machine equally.Weight elevator group 4 is bolted on the engine house floor of harbour lifting equipment 1, and top sheave group and support 3 are welded in the engine house top cover of harbour lifting equipment 1, connect reel 16 and the energy storage weight 6 of weight elevator group 4 with steel wire rope 18；Weight supports tank tower 5 and is welded in the engine house side of harbour lifting equipment 1, and bearing pin movable supporting block 23 is articulated with weight with bearing pin 22 and supports on the floor of tank tower 5.Mainly comprise liftable energy storage weight 6, recyclable, store and change regeneration heavy load potential energy, its function is: after the weight decline of lifting and the rotating speed of its motor M1 exceed synchronous rotational speed, energy storage weight 6 rises, and heavy load potential energy is converted into the potential energy storage of energy storage weight 6；When again carrying out weight lifting, the potential energy of energy storage weight 6 storage discharges power-assisted, such that it is able to save the consumption of electric energy.Weight is substantially carry out with the adverse movement of energy storage weight 6 simultaneously, and energy conversion efficiency is high.Otherwise for different hoisting weights, when weight weight is big, the many liftings of energy storage weight；Weight is lightweight or during empty hook, energy storage weight lifts less or do not lifts, to improve heavy load potential energy utilization rate.
Described ac-dc-ac inverter module includes rectification module, dc bus and inversion module, drive the motor M2 of energy storage weight jointly by PLC control with driving the motor M1 of boom hoisting, control, described motor M1, motor M2 are connected with PLC, and described PLC is also associated with load sensor 2.Being additionally provided with voltage relay 10 between described rectification module 9 and PLC 11, described rectification module 9 is connected by dc bus DC with PLC 11, and is connected with the dc bus of motor M1, motor M2.Liftable energy storage weight is driven by motor drum mechanism built, and this motor is connected with the ac-dc-ac inverter module dc bus of crane gear lifting motor by ac-dc-ac inverter module drive, the ac-dc-ac inverter module dc bus of this motor；It addition, utilize detection device detection hoisting weight, detection signal is delivered to PLC, is sent corresponding frequency control signal, when heavy duty, export higher to the frequency ratio of ac-dc-ac inverter module, the many liftings of energy storage weight after PLC computing；When load alleviates, output frequency reduces, and energy storage weight lifts less；If load, energy storage weight does not lifts.Power frequency 50HZ ac power supply line rectified module 9 power transmission is to dc bus DC, the exchange of frequency-adjustable is provided to supply electricity to motor M1 by the first inversion module 12 again, the size of frequency is controlled by PLC 11, the boom hoisting of motor M1 frequency conversion drive harbour lifting equipment 1 and weight 8.When boom hoisting and weight 8 decline, excessive velocities or subtract frequency reduction of speed time, after lifting motor M1 exceedes synchronous rotational speed, when the counter electromotive force E of motor M1 is more than rated voltage U of dc bus DC, motor M1 not only need not consume the electric energy of dc bus, on the contrary to dc bus power transmission, being i.e. in regenerative braking state, the potential energy converting and energy of boom hoisting and weight 8 becomes electric energy feedback to dc bus DC.Rated voltage U that the operation voltage of DC voltage relay 10 is adjusted to than dc bus DC is slightly higher, if the operation voltage of the voltage >=DC voltage relay 10 of dc bus DC during feedback, DC voltage relay 10 sends enabling signal to PLC 11, it is allowed to energy storage weight 6 rises and carries out energy storage.Motor M2 is controlled by PLC 11, through decelerator 15 slow down increase moment of torsion rear drive reel 16, folding and unfolding steel wire rope 18 thus lift energy storage weight 6.Deadman's brake 14 in case of emergency, can carry out brake hard to energy storage weight 6, it is achieved safeguard protection.Otherwise for different hoisting weights, lift heavy load signal is delivered to PLC 11 and is carried out computing by load sensor 2, full load PLC 11 exports peak frequency to the second inversion module 13, the driving motor M2 of energy storage weight runs with maximum speed, and energy storage weight 6 rises at most, and energy storage is the most most, PLC 11 output frequency signal by a certain percentage during undercapacity, the rotating speed of the driving motor M2 of energy storage weight decreases, and energy storage weight 6 rises few, and weight energy storage reduces.Rise when boom hoisting and weight 8 lift by crane, then course of action is contrary to the above, PLC 11 exports control signal and declines to the driving motor M2 of energy storage weight, the same feedback current that produces is to dc bus DC, the potential energy release of energy storage weight, and power-assisted is lifted by crane, if the weight of boom hoisting and weight 8 is big, then the frequency of M2 is high, and in the unit interval, energy storage weight falling head is many, many exoergics；If the weight of boom hoisting and weight 8 is little, energy storage weight declines few, few exoergic；If the weight of boom hoisting and weight 8 is too small, the 30% of such as underweight, this ratio is adjustable when PLC programs, PLC 11 send stopping signal give drive motor M2, energy storage weight does not declines, not exoergic, improve energy storage utilization rate.Inversion module 13 can be separately provided, it is also possible to shares with the inversion module of other mechanism of harbour lifting equipment to reduce input cost.
Described energy storage weight 6 is provided with weight and supports tank tower 5, described weight supports tank tower 5 and includes movable supporting block 23, spring rod assembly 20 and flexible push rod 21, described movable supporting block 23 is hinged on weight by bearing pin 22 and supports on the bearing of tank tower 5, described spring rod assembly 20 is connected with movable supporting block 23 with difference one end of flexible push rod 21, the other end is fixed on weight and supports the upper end of tank tower 5, and the upper end of described energy storage weight 6 is additionally provided with and the gusseted block 24 of movable supporting block 23 adaptation.So that or harbour lifting equipment too high at wind speed is shut down the not used time for a long time, energy storage weight can be supported to realize safeguard protection automatically.When before strong wind arrives or when harbour lifting equipment disables for a long time, can individually control motor M2 and lift by crane energy storage weight 6, during lifting, the inclined-plane c of energy storage weight 6 gusseted block can slip over the inclined-plane b of movable supporting block 23 automatically, spring rod assembly 20 is elongated, after energy storage weight 6 gusseted block crosses movable supporting block 23, the elastic force of spring rod assembly 20 makes movable supporting block 23 automatically recover home position preparation support, then motor M2 transfers energy storage weight 6, the lower surface d of energy storage weight 6 gusseted block falls on the upper surface a of movable supporting block 23, thus energy storage weight 6 is not fallen out by support, to realize safeguard protection.When harbour lifting equipment and energy storage weight 6 need to devote oneself to work, and PLC 11 sends signal, and energy storage weight 6 first promotes certain altitude, and the push rod 21 that then stretches stretches out driving movable supporting block 23 and rotates around bearing pin 22, and energy storage weight 6 can put down, thus devotes oneself to work.
Described weight is additionally provided with the limit switch 19 limiting the maximum sling height of energy storage weight 6 in supporting tank tower 5.Described driving is additionally provided with offer speed feedback signal and limits the minimum rotary encoder 17 transferring stroke of energy storage weight on reel 16.Limit switch 19 is the maximum sling height limit switch of energy storage weight 6, and combines rotary encoder 17, can limit that energy storage weight 6 is minimum transfers height, prevents overtravel, it is achieved safeguard protection.
Described steel wire rope 18 two ends are connected with top sheave group and support 3 and reel 16 respectively, and the pulley walking around energy storage weight 6 carries out lift heavy to energy storage weight 6.
Described weight elevator group 4 includes motor M2 and drives steel wire rope 18 to lift the driving reel 16 of energy storage weight 6, is additionally provided with decelerator 15 between described motor M2 and driving reel 16.
The deadman's brake 14 for energy storage weight 6 being carried out brake hard it is additionally provided with between described motor M2 and decelerator 15.
Claims (10)
1. the energy saver for harbour lifting equipment, including energy storage weight (6) and weight elevator group (4), it is connected by steel wire rope (18) between described energy storage weight (6) and weight elevator group (4), described steel wire rope (18) is supported by top sheave group and support (3), and described weight elevator group (4) uses ac-dc-ac inverter module drive.
A kind of energy saver for harbour lifting equipment the most according to claim 1, it is characterized in that, described ac-dc-ac inverter module drive includes rectification module (9) and PLC (11) and the motor M1 controlling to drive boom hoisting (8), control to drive the motor M2 of energy storage weight (6), described motor M1, motor M2 is connected with PLC (11), described motor M1, the first inversion module (12) and the second inversion module (13) it is additionally provided with between motor M2 and PLC (11), described PLC (11) is also associated with load sensor (2).
A kind of energy saver for harbour lifting equipment the most according to claim 2, it is characterized in that, being additionally provided with voltage relay (10) between described rectification module (9) and PLC (11), described rectification module (9) is connected with the dc bus of motor M1, motor M2.
A kind of energy saver for harbour lifting equipment the most according to claim 1, it is characterised in that be additionally provided with the support fixed mechanism for supporting energy storage weight (6) between described energy storage weight (6) and top sheave group and support (3).
A kind of energy saver for harbour lifting equipment the most according to claim 4, it is characterized in that, described support fixed mechanism includes that weight supports tank tower (5), described weight supports tank tower (5) and includes movable supporting block (23), spring rod assembly (20) and flexible push rod (21), described movable supporting block (23) is hinged on weight by bearing pin (22) and supports on the bearing of tank tower (5), described spring rod assembly (20) is connected with movable supporting block (23) respectively with one end of flexible push rod (21), the other end is fixed on weight and supports the upper end of tank tower (5), the upper end of described energy storage weight (6) is additionally provided with the gusseted block (24) adaptive with movable supporting block (23).
A kind of energy saver for harbour lifting equipment the most according to claim 5, it is characterised in that described weight is additionally provided with the limit switch (19) limiting the maximum sling height of energy storage weight (6) in supporting tank tower (5).
A kind of energy saver for harbour lifting equipment the most according to claim 1, it is characterized in that, described weight elevator group (4) includes motor M2 and drives the driving reel (16) of steel wire rope (18) lifting energy storage weight (6), is additionally provided with decelerator (15) between described motor M2 and driving reel (16).
A kind of energy saver for harbour lifting equipment the most according to claim 7, it is characterized in that, described steel wire rope (18) two ends respectively with top sheave group and support (3) and drive reel (16) to be connected, and the pulley walking around energy storage weight (6) carries out lift heavy to energy storage weight (6).
A kind of energy saver for harbour lifting equipment the most according to claim 7, it is characterised in that be additionally provided with the deadman's brake (14) for energy storage weight (6) being carried out brake hard between described motor M2 and decelerator (15).
A kind of energy saver for harbour lifting equipment the most according to claim 8, it is characterised in that offer speed feedback signal is provided on described driving reel (16) and limits energy storage weight (6) the minimum rotary encoder (17) transferring stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620245231.3U CN205500597U (en) | 2016-03-29 | 2016-03-29 | A economizer for harbour hoisting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620245231.3U CN205500597U (en) | 2016-03-29 | 2016-03-29 | A economizer for harbour hoisting equipment |
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| Publication Number | Publication Date |
|---|---|
| CN205500597U true CN205500597U (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620245231.3U Expired - Fee Related CN205500597U (en) | 2016-03-29 | 2016-03-29 | A economizer for harbour hoisting equipment |
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| CN (1) | CN205500597U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106672818A (en) * | 2016-10-26 | 2017-05-17 | 泰富重工制造有限公司 | Gate seat type crane |
| CN111960280A (en) * | 2020-09-02 | 2020-11-20 | 三一海洋重工有限公司 | Energy feedback control method, crane control method and crane |
| CN114199431A (en) * | 2021-12-07 | 2022-03-18 | 上海中联重科桩工机械有限公司 | Load spectrum acquisition method and system of winch speed reducer and rotary drilling rig |
-
2016
- 2016-03-29 CN CN201620245231.3U patent/CN205500597U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106672818A (en) * | 2016-10-26 | 2017-05-17 | 泰富重工制造有限公司 | Gate seat type crane |
| CN111960280A (en) * | 2020-09-02 | 2020-11-20 | 三一海洋重工有限公司 | Energy feedback control method, crane control method and crane |
| CN111960280B (en) * | 2020-09-02 | 2022-06-21 | 三一海洋重工有限公司 | Energy feedback control method, crane control method and crane |
| CN114199431A (en) * | 2021-12-07 | 2022-03-18 | 上海中联重科桩工机械有限公司 | Load spectrum acquisition method and system of winch speed reducer and rotary drilling rig |
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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: 20160824 Termination date: 20170329 |
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| CF01 | Termination of patent right due to non-payment of annual fee |