CN2538762Y - Reverse pulling type hydraulic elevator lifting mechanism - Google Patents
Reverse pulling type hydraulic elevator lifting mechanism Download PDFInfo
- Publication number
- CN2538762Y CN2538762Y CN 01273129 CN01273129U CN2538762Y CN 2538762 Y CN2538762 Y CN 2538762Y CN 01273129 CN01273129 CN 01273129 CN 01273129 U CN01273129 U CN 01273129U CN 2538762 Y CN2538762 Y CN 2538762Y
- Authority
- CN
- China
- Prior art keywords
- pulley
- lifting mechanism
- plunger
- counterweight
- fixed
- 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 - Lifetime
Links
Landscapes
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The utility model relates to a lifting mechanism for inverse draw type hydraulic elevators, comprising an elevator car[5], a pumping station [1] and a cylinder, which is characterized in that, the cylinder adopts a pull type cylinder [2] or a bidirectional cylinder; the plunger of the cylinder passes a counterweight [3] and bypasses a pulley block [4] comprising at least one fixed pulley from one side by a traction rope [6] to connect the elevator car [5] at the other end; then an elevator lifting mechanism having two working states of hydraulic lifting and lowering is formed. The utility model uses the characteristic of bearing relay of pull type cylinders and bidirectional cylinders; balanced counterweight is matched to the utility model, and the utility model is then formed by the connection between the pulley block and the elevator car. The utility model has the advantages that, lift-up unloading is used to improve the lift-up bearing of the elevator car, so the stability of the cylinder is good, and the power consumption of the cylinder is greatly reduced; the defect of jitter caused by the stepping during the lift-up bearing is improved, so the noise is lowered, and the comfortable feeling during the ride is improved; the diameter of the cylinder and the volume of an oil tank are correspondingly reduced in a large scale; configuration without machine room can be realized by split type or integral type hydraulic system and control system, and the utility model is particularly suitable for the buildings and home residences with limited machine room position.
Description
Technical field
The utility model relates to a kind of lifting mechanism of elevator, is specifically related to a kind of lifting mechanism of hydraulic elevator.
Background technology
Hydraulic elevator is a kind of elevator that utilizes hydraulic power to pass through the lifting of hydraulic oil cylinder driving car.In this elevator structure, lifting mechanism is the core of whole elevator, and its quality not only directly affects the performance of elevator, but also directly has influence on other indexs such as energy consumption, machine room configuration and safe reliability.The car lifting mechanism of domestic existing hydraulic elevator generally all adopts oil cylinder jacking type structure, promptly makes the lift car carrying up by oil cylinder plunger jacking mode.Though this structure has been prolonged with for many years, and brings into play positive role, also has following deficiency comparatively speaking: 1, because the direct or indirect jacking car of oil cylinder is fully loaded up, therefore need bigger power, corresponding expenditure of energy is also bigger; 2, climbing structure is to oil cylinder, and especially the strut stability of plunger is had relatively high expectations, so oil cylinder and plunger have to design greatlyyer, satisfies stability requirement with this; 3, because delivery quality increases, and oil tank and control system volume are bigger, need bigger accommodation space, therefore to realizing difficulty of no machine room control ratio; 4, the headroom height to building has corresponding requirements.In a word, above-mentioned shortcoming has limited the application and the development of hydraulic elevator from different perspectives, for this reason, the utility model is from the angle of reform lifting mechanism principle and structure, designed a kind of pull-type elevating mechanism that falls that is suitable for hydraulic elevator, its purpose mainly is to improve the lifting mechanism force-bearing situation, reduces cylinder diameter, pumping plant flow and fuel tank volume, saves energy resource consumption and realizes that hydraulic elevator does not have the machine room configuration thereby reach.
Summary of the invention
For achieving the above object, the technical solution adopted in the utility model is: a kind ofly fall pull-type hydraulic elevator lifting mechanism, comprise car, pumping plant and oil cylinder, the key of this programme is: oil cylinder adopts pull-type oil cylinder or two-way cylinder, the plunger of this oil cylinder is walked around the assembly pulley that is made of a fixed pulley at least through counterweight by hauling rope from a side, be connected with the car of opposite side, constitute hydraulic pressure with this and draw high and put the elevator lifting mechanism of falling two kinds of mode of operations.
Related content in the technique scheme is explained as follows:
Described " car " carries the railway carriage or compartment for taking advantage of of elevator.Described " pumping plant " hydraulic oil is supplied with and recovery system.The plunger retraction bore the oil cylinder of pulling force when described " pull-type oil cylinder " was meant the oil cylinder oiling, saw shown in the accompanying drawing 1.Described " two-way cylinder " is meant that plunger stretching, contracting the beidirectional oil cylinder.Described " hydraulic pressure draw high and put fall two kinds of mode of operations " specifically refers to: when when oil cylinder injects hydraulic oil, plunger draws car by hauling rope and assembly pulley, and it is moving to make it to present elevator, promptly draws high mode of operation; When in-oil cylinder hydraulic oil was emitted or extracted out, plunger loosens hauling rope made car be descending motion, promptly puts and falls mode of operation.The sense of motion that on the contrary refers to plunger in described " pull-type " is opposite with the sense of motion of car.
In the technique scheme, the notion of described hauling rope and assembly pulley and including is explained as follows:
The described hauling rope of this programme is meant steel rope generally speaking, and assembly pulley is made of a fixed pulley at least.On movement relation, as long as after hauling rope and assembly pulley connection, satisfy reverse motions between plunger and the car, i.e. during rising, another decline.Fasten and can regulate by the configuration of assembly pulley from transmitting ratio and stressed pass, when being a fixed pulley when assembly pulley, transmitting ratio is 1: 1, and plunger is 1: 1 with the pulling force of car than also.When assembly pulley was made of a fixed pulley and a movable pulley, transmitting ratio was 2: 1, and the pulling force ratio is 1: 2.When assembly pulley was made of two fixed pulleys and a movable pulley, transmitting ratio was 3: 1, and the pulling force ratio is 1: 3.By that analogy.Here it is emphasized that above-mentioned relation can finish with one group of assembly pulley, also can finish that the quantity of assembly pulley does not influence transmitting ratio, but can reduce the stressed of every hauling rope with two groups or more assembly pulley.If connect plunger and car, bear transmission between plunger and the car and stressed jointly for two groups so with two groups of pulleys.Hauling rope constitutes by one at least in a word, and the quantity of hauling rope is corresponding with the quantity of assembly pulley, constitutes corresponding transmitting ratio by fixed pulley and movable pulley are combined in each assembly pulley.Exemplify several typical case below:
1, described hauling rope is one, assembly pulley is made up of a fixed pulley and a movable pulley, movable pulley is placed in plunger and counterweight one side, and form whole the connection with plunger and counterweight, hauling rope is walked around a movable pulley and a fixed pulley, the one end is fixed, and the other end is connected with car, constitutes single rope traction lifting mechanism of transmission in 2: 1 with this.
2, described hauling rope is two, assembly pulley is made of two groups of pulleys, form by a fixed pulley and a movable pulley for every group, two movable pulleys all are placed in plunger and counterweight one side, and form whole the connection with plunger and counterweight, and every hauling rope correspondence is walked around a movable pulley and a fixed pulley, and the one end is fixed, the other end is connected with car respectively, constitutes the duplex type traction lifting mechanism of transmission in 2: 1 with this.
3, described hauling rope is one, assembly pulley is made up of two fixed pulleys and a movable pulley, movable pulley is placed in plunger and counterweight one side, and form whole the connection with plunger and counterweight, hauling rope is walked around a movable pulley and two fixed pulleys, the one end is fixed on plunger or the counterweight, and the other end is connected with car, constitutes single rope traction lifting mechanism of transmission in 3: 1 with this.
4, described hauling rope is two, assembly pulley is made of two groups of pulleys, form by two fixed pulleys and a movable pulley for every group, two movable pulleys all are placed in plunger and counterweight one side, and form whole the connection with plunger and counterweight, and every hauling rope correspondence is walked around a movable pulley and two fixed pulleys, and the one end is fixed on plunger or the counterweight, the other end is connected with car respectively, constitutes the duplex type traction lifting mechanism of transmission in 3: 1 with this.
5, described hauling rope is one, and assembly pulley is made up of a fixed pulley, and hauling rope is walked around fixed pulley, and the one end is fixed on plunger or the counterweight, and the other end is connected with car, constitutes single rope traction lifting mechanism of transmission in 1: 1 with this.
6, described hauling rope is two, and assembly pulley is made of two groups of pulleys, is made up of a fixed pulley for every group, every hauling rope correspondence is walked around a fixed pulley, the one end is fixed on plunger or the counterweight, and the other end is connected with car respectively, constitutes the duplex type traction lifting mechanism of transmission in 1: 1 with this.
Below be for example in clearer explanation this programme about the including of hauling rope and assembly pulley, it should be foundation with the technical characterictic of claims record for example that the utility model protection domain is not limited to above, specification sheets is in order to explain claims.The described hauling rope of this programme can be replaced for chain and cooperating of chain wheel set with cooperating of assembly pulley, and the replacement of being done in this way that is equal to still drops in the utility model protection domain.
In the technique scheme, described " counterweight " is a kind of balance weight block structure.Accomplish adjustablely for the weight that makes counterweight, described counterweight can be designed to be made up of counter-balanced carriage and at least one movable weight, and counter-balanced carriage is captiveed joint with plunger, and clump weight is located on the counter-balanced carriage.Can increase counterweight by the quantity of adding clump weight like this.Balance weight is energy-conservation key, its weight what directly influence lifting mechanism work and energy-saving effect, in addition, the setting of counterweight is relevant with assembly pulley, here we are a fixed pulley in order to say something the hypothesis assembly pulley, and ignore weight such as plunger, to close be 1: 1 to the stress balance of plunger side and cage side like this.Under this condition, the weight of counterweight has three kinds of possibilities theoretically, and first kind is that counterweight weight is less than car weight; Second kind is that counterweight weight equals car weight; The third is that counterweight weight is greater than car weight.But from energy-conservation angle, first kind and second kind of situation have positive effect, wherein, and energy-saving effect the best during counterweight payment car 60% left and right sides weight in first kind of situation.Although the third situation is feasible on the lifting mechanism principle, and is nonsensical in the practical application.Under other assembly pulley situation, the setting of counterweight can be by that analogy.
Here require emphasis, above-mentioned three kinds of counterweight modes require also different to oil cylinder, and first kind of situation during work, rises car to pull-type oil cylinder oiling as long as adopt pull-type oil cylinder, rely on car self heavily to carry out as long as open the oil cylinder valve during decline.Then two kinds of situations then will adopt two-way cylinder, and described two-way cylinder can have dual mode work, and a kind of is by oppositely oil pumping formation two-way function in pull-type oil cylinder; Another kind is to adopt a real two-way cylinder to come work.
The utility model principle of work is: shown in accompanying drawing 1, after pumping plant 1 started, hydraulic oil entered down pull-type oil cylinder 2 by oil pipe 7, make plunger produce drop-down motion, under counterweight 3 free falls and the drop-down double action of plunger rod,, car 5 is risen by speed change transmissions in 2: 1 of assembly pulley 4.When car descends, utilize the car deadweight that plunger is risen under the mitigation of counterweight 3 slowly, the hydraulic oil in the pull-type oil cylinder 2 of falling are simultaneously put back to or oil pump is drawn back the fuel tank of pumping plant 1.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1, the utility model can be realized the no machine room configuration of hydraulic elevator effectively.Because oil cylinder adopts pull-up structure, need not consider that oil cylinder is at strut stability, reduced cylinder diameter greatly, the pumping plant flow is diminished, the fuel tank volume-diminished, like this can hydraulic efficiency pressure system and control system do split type, also can make integral type, its alignment placement position is unrestricted substantially, even can be placed on the car hoistway wall, has realized that effectively hydraulic elevator does not have the machine room configuration.Especially more apparent advantage under the situation of machine room limited location.
2, compare with traditional jacking type hydraulic elevator, consumption of power has reduced more than 1/3.The utility model adopts pull-type oil cylinder and combinations of weights to remove the balance car weight, depowering consumption so greatly, thus reach energy-conservation purpose.
3, the utility model is in the configuration of hydraulic elevator structure, and traditional jacking car, the plunger pressure-bearing is improved to and draws high car, and plunger tension, counterweight are offset most of pulling force, and lift car is descending when the jacking of oil cylinder plunger, and it is low to load; When the car uplink load was high, plunger was withdrawn into oil cylinder down under the counterweight effect, improved the force-bearing situation of plunger, had therefore overcome the strut stability problem of the plunger of hydraulic elevator in the past.
The disadvantage that car was shaken because of local stepping when 4, the utility model had improved the carrying jacking has reduced noise, has improved hydraulic elevator lifting mechanism operation stability and ride comfort sense.It is taken performance and is better than similar products at home and abroad.
5, the utility model principal feature is on the contrary with the jacking type lifting mechanism, the characteristic that it utilizes pull-type oil cylinder or two-way cylinder plunger to bear pulling force, be equipped with balance weight, connect and compose a kind of hydraulically powered novel pull-type elevating mechanism that is suitable for by assembly pulley and car again.This improvement is a revolution to tradition " jacking type hydraulic elevator lifting mechanism ", also is a kind of innovation of hydraulic elevator lifting mechanism, and its technical conceive is ingenious, and is rational in infrastructure, remarkably productive, and is significant to the development that promotes hydraulic elevator.
Below be that hoisting depth is that 11.2m, command speed are that 0.75m/s, nominal payload 630Kg, patronage are two kinds of elevating drive mechanism technical parameter contrasts of hydraulic elevator situation of 8, be used to illustrate effect of the present utility model.
| Structure | The oil cylinder model specification | Tank capacity | Oil pump flow | The oil cylinder capacity | Matched power |
| Pull-type | TR-C90/50×5600 | 100L | 100L/min | 25L | 9.6Kw |
| Jacking type | 100×5×5600 | 320L | 180L/min | 45L | 14.7Kw |
Description of drawings
Accompanying drawing 1 is pull-type hydraulic elevator lifting mechanism schematic diagram for the utility model falls;
Accompanying drawing 2 is the utility model cylinder structure cutaway view;
Accompanying drawing 3 is applied to the embodiment basic structure schematic perspective view of hydraulic elevator for the utility model.
In the above accompanying drawing: 1, pumping plant; 2, fall pull-type oil cylinder; 3, counterweight; 4, assembly pulley; 5, car; 6, steel rope; 7, oil pipe; 8, guide rail connects support; 9, guide rail; 10, guide rail base; 11, pulley bracket; 12, limit switch; 13, velocity limiter; 14, governor rope; 15, velocity limiter weight; 16, energy disperser; 17, car frame; 18, plunger; 19, deflation hole; 20, oil inlet port; 21, draining interface; 22, draining interface.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: shown in accompanying drawing 1～accompanying drawing 3, a kind of energy-saving type inorganic room hydraulic elevator connects support 8, guide rail 9, guide rail base 10, pulley bracket 11, limit switch 12, velocity limiter 13, governor rope 14, velocity limiter weight 15, energy disperser 16 etc. and forms by falling pull-type hydraulic elevator lifting mechanism, electric control system, guide rail.Wherein, falling pull-type hydraulic elevator lifting mechanism is made up of car 5, car frame 17, pumping plant 1, pull-type oil cylinder 2, counterweight 3, assembly pulley 4, hauling rope 6 and oil pipe 7.Pumping plant 1 comprises fuel tank, fuel tank annex, oil pump and hydraulic pressure components and parts, pumping plant 1 is connected with pull-type oil cylinder 2 by oil pipe 7, the plunger top captive joint counterweight 3 of pull-type oil cylinder 2, counterweight 3 is made up of counter-balanced carriage and plurality of movable clump weight, captive joint with plunger in the counter-balanced carriage bottom, sidepiece slides up and down along guide groove by track adjusting wheel, and several clump weights are located on the counter-balanced carriage, and the quantity of clump weight is decided as required.Described hauling rope 6 is two steel ropes, cooresponding assembly pulley 4 is made of two groups of pulleys, form by a fixed pulley and a movable pulley for every group, two fixed pulleys are installed and are put at pulley bracket 11, pulley bracket 11 is fixed on the top that guide rail connects support 8, two movable pulleys all are placed on the counter-balanced carriage, and form whole the connection with counter-balanced carriage, every steel rope correspondence is walked around a movable pulley and a fixed pulley, the one end is fixed, the other end is connected with car frame 17 respectively, car 5 is fixed on the car frame 17, and car frame 17 sidepieces are placed in the guide rail 9 by track adjusting wheel, and guide rail 9 is fixed on guide rail and connects on the support 8, guide rail connects support 8 and is fixed on the guide rail base 10, constitutes the duplex type traction lifting mechanism of 2:1 transmission with this.
Claims (10)
1, a kind ofly falls pull-type hydraulic elevator lifting mechanism, comprise car [5], pumping plant [1] and oil cylinder, it is characterized in that: oil cylinder adopts pull-type oil cylinder [2] or two-way cylinder, the plunger of this oil cylinder is walked around the assembly pulley [4] that is made of a fixed pulley at least through counterweight [3] by hauling rope [6] from a side, be connected with the car [5] of opposite side, constitute hydraulic pressure with this and draw high and put the elevator lifting mechanism of falling two kinds of mode of operations.
2, according to claim 1ly fall pull-type hydraulic elevator lifting mechanism, it is characterized in that: described hauling rope [6] constitutes by one at least, the quantity of hauling rope [6] is corresponding with the quantity of assembly pulley [4], constitutes corresponding transmitting ratio by fixed pulley and movable pulley are combined in each assembly pulley [4].
3, according to claim 2ly fall pull-type hydraulic elevator lifting mechanism, it is characterized in that: described hauling rope [6] is one, assembly pulley [4] is made up of a fixed pulley and a movable pulley, movable pulley is placed in plunger and counterweight [3] one sides, and form whole the connection with plunger and counterweight [3], and hauling rope [6] is walked around a movable pulley and a fixed pulley, and the one end is fixed, the other end is connected with car [5], constitutes single rope traction lifting mechanism of transmission in 2: 1 with this.
4, according to claim 2ly fall pull-type hydraulic elevator lifting mechanism, it is characterized in that: described hauling rope [6] is two, assembly pulley [4] is made of two groups of pulleys, form by a fixed pulley and a movable pulley for every group, two movable pulleys all are placed in plunger and counterweight [3] one sides, and form whole the connection with plunger and counterweight [3], every hauling rope [6] correspondence is walked around a movable pulley and a fixed pulley, the one end is fixed, the other end is connected with car [5] respectively, constitutes the duplex type traction lifting mechanism of transmission in 2: 1 with this.
5, according to claim 2ly fall pull-type hydraulic elevator lifting mechanism, it is characterized in that: described hauling rope [6] is one, assembly pulley [4] is made up of two fixed pulleys and a movable pulley, movable pulley is placed in plunger and counterweight [3] one sides, and form whole the connection with plunger and counterweight [3], and hauling rope [6] is walked around a movable pulley and two fixed pulleys, and the one end is fixed on plunger or the counterweight [3], the other end is connected with car [5], constitutes single rope traction lifting mechanism of transmission in 3: 1 with this.
6, according to claim 2ly fall pull-type hydraulic elevator lifting mechanism, it is characterized in that: described hauling rope [6] is two, assembly pulley [4] is made of two groups of pulleys, form by two fixed pulleys and a movable pulley for every group, two movable pulleys all are placed in plunger and counterweight [3] one sides, and form whole the connection with plunger and counterweight [3], every hauling rope [6] correspondence is walked around a movable pulley and two fixed pulleys, the one end is fixed on plunger or the counterweight [3], the other end is connected with car [5] respectively, constitutes the duplex type traction lifting mechanism of transmission in 3: 1 with this.
7, according to claim 2ly fall pull-type hydraulic elevator lifting mechanism, it is characterized in that: described hauling rope [6] is one, assembly pulley [4] is made up of a fixed pulley, hauling rope [6] is walked around fixed pulley, the one end is fixed on plunger or the counterweight [3], the other end is connected with car [5], constitutes single rope traction lifting mechanism of transmission in 1: 1 with this.
8, according to claim 2ly fall pull-type hydraulic elevator lifting mechanism, it is characterized in that: described hauling rope [6] is two, assembly pulley [4] is made of two groups of pulleys, form by a fixed pulley for every group, every hauling rope [6] correspondence is walked around a fixed pulley, the one end is fixed on plunger or the counterweight [3], and the other end is connected with car [5] respectively, constitutes the duplex type traction lifting mechanism of transmission in 1: 1 with this.
9, according to claim 1ly fall pull-type hydraulic elevator lifting mechanism, it is characterized in that: described counterweight [3] is made up of counter-balanced carriage and at least one movable weight, and counter-balanced carriage is captiveed joint with plunger, and clump weight is located on the counter-balanced carriage.
10, according to claim 1ly fall pull-type hydraulic elevator lifting mechanism, it is characterized in that: cooperating of described hauling rope [6] and assembly pulley [4] can cooperating for chain and chain wheel set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01273129 CN2538762Y (en) | 2001-12-27 | 2001-12-27 | Reverse pulling type hydraulic elevator lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01273129 CN2538762Y (en) | 2001-12-27 | 2001-12-27 | Reverse pulling type hydraulic elevator lifting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2538762Y true CN2538762Y (en) | 2003-03-05 |
Family
ID=33678155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01273129 Expired - Lifetime CN2538762Y (en) | 2001-12-27 | 2001-12-27 | Reverse pulling type hydraulic elevator lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2538762Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502381A (en) * | 2011-12-13 | 2012-06-20 | 三一重工股份有限公司 | Hoister |
| CN103979388A (en) * | 2014-05-30 | 2014-08-13 | 马健勇 | Room-free pit-free barrier-free elevator |
| CN107032244A (en) * | 2017-05-27 | 2017-08-11 | 中山市金马科技娱乐设备股份有限公司 | A kind of drive mechanism of new driving skid lifting |
| CN111707387A (en) * | 2020-06-24 | 2020-09-25 | 广东韶钢松山股份有限公司 | Refining furnace temperature measuring gun lifting device and method |
-
2001
- 2001-12-27 CN CN 01273129 patent/CN2538762Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502381A (en) * | 2011-12-13 | 2012-06-20 | 三一重工股份有限公司 | Hoister |
| CN102502381B (en) * | 2011-12-13 | 2014-06-18 | 三一重工股份有限公司 | Hoister |
| CN103979388A (en) * | 2014-05-30 | 2014-08-13 | 马健勇 | Room-free pit-free barrier-free elevator |
| CN107032244A (en) * | 2017-05-27 | 2017-08-11 | 中山市金马科技娱乐设备股份有限公司 | A kind of drive mechanism of new driving skid lifting |
| CN107032244B (en) * | 2017-05-27 | 2022-07-05 | 广东金马游乐股份有限公司 | Novel driving mechanism for driving sliding frame to lift |
| CN111707387A (en) * | 2020-06-24 | 2020-09-25 | 广东韶钢松山股份有限公司 | Refining furnace temperature measuring gun lifting device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101538998B (en) | Improved automatic control hydraulic transmission oil pumping machine | |
| CN204549762U (en) | Two host driven elevator | |
| CN104760870A (en) | Double-host driving elevator | |
| CN1657393A (en) | Push and pull cylinder variable frequency energy-saving hydraulic elevator system of balancing load by accumulator loop | |
| CN1673064A (en) | Dragging energy-saving lift with two cages | |
| CN2538762Y (en) | Reverse pulling type hydraulic elevator lifting mechanism | |
| CN204096842U (en) | A kind of composite flooding hydraulic elevator system | |
| CN1749144A (en) | Method and device for interactive operation of two lifts | |
| CN101187304B (en) | High reliability double well pumping machine | |
| CN111305800B (en) | Interactive balance device of beam-pumping unit and operation method thereof | |
| CN1657392A (en) | Variable frequency closed type energy-saving hydraulic elevator system with mechanical balance weight | |
| CN201679483U (en) | Auto reversing indirectly dragged steel rope type oil pumping unit | |
| CN202970633U (en) | Full-automatic hydraulic pumping unit | |
| CN2705588Y (en) | Energy saving closed loop hydraulic oil pumping unit | |
| CN205204567U (en) | No counter weight elevator and lift driving motor , drive unit and actuating system thereof | |
| CN1270959C (en) | Energy-saving elevator hydraulic system employing closed oil way | |
| CN201535154U (en) | Permanent-magnet motor poly-wedge belt transmission driving type oil extractor | |
| CN114314266A (en) | Knapsack formula aluminium alloy elevator | |
| CN109399427A (en) | A kind of vertical goods elevator of energy-saving air formula | |
| CN1974361A (en) | Energy-saving lift with adjustable counterweight power | |
| CN114408710A (en) | Traction type aluminum profile elevator | |
| CN2331636Y (en) | Civil house hydraulic elevator with variable counterweight device | |
| CN208906988U (en) | A kind of forcibly driving elevator | |
| CN206705466U (en) | A kind of hydraulic pressure speed-raising elevator | |
| CN110862047A (en) | Hydraulic control device and method for explosion-proof synchronous circuit for elevator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU DONGNAN HYDRAULIC ELECATOR CO., LTD. Free format text: FORMER NAME: DONGNAN HYDRAULIC ELEVATOR MFG. CO. LTD., SUZHOU CITY Owner name: DONGNAN ELEVATOR CO., LTD. Free format text: FORMER NAME: SUZHOU DONGNAN ELEVATOR (GROUP) CO., LTD. Owner name: SUZHOU DONGNAN ELEVATOR (GROUP) CO., LTD. Free format text: FORMER NAME: SUZHOU DONGNAN HYDRAULIC ELECATOR CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 215200 No. 6588 traffic North Road, Wujiang Economic Development Zone, Suzhou Patentee after: DONGNAN ELEVATOR Co.,Ltd. Address before: 215200 No. 6588 traffic North Road, Wujiang Economic Development Zone, Suzhou Patentee before: SUZHOU DONGNAN ELEVATOR (HOLDINGS) Co.,Ltd. Address after: Loufeng Dongxing Road Industrial Park in Suzhou District of Jiangsu Province, No. 24 215021 Patentee after: SUZHOU DONGNAN HYDRAULIC ELEVATOR Co.,Ltd. Address before: Loufeng Dongxing Road Industrial Park in Suzhou District of Jiangsu Province, No. 24 215021 Patentee before: Suzhou Dongnan Hydraulic Elevator Co.,Ltd. |
|
| CP03 | Change of name, title or address |
Address after: 215200 No. 6588 traffic North Road, Wujiang Economic Development Zone, Suzhou Patentee after: SUZHOU DONGNAN ELEVATOR (HOLDINGS) Co.,Ltd. Address before: Loufeng Dongxing Road Industrial Park in Suzhou District of Jiangsu Province, No. 24 215021 Patentee before: SUZHOU DONGNAN HYDRAULIC ELEVATOR Co.,Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20111227 Granted publication date: 20030305 |