CN205367375U - Elevator car goes upward overspeed protection system - Google Patents
Elevator car goes upward overspeed protection system Download PDFInfo
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- CN205367375U CN205367375U CN201620073144.4U CN201620073144U CN205367375U CN 205367375 U CN205367375 U CN 205367375U CN 201620073144 U CN201620073144 U CN 201620073144U CN 205367375 U CN205367375 U CN 205367375U
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- way servo
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- servo valve
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Abstract
The utility model discloses an elevator car goes upward overspeed protection system. The utility model discloses a wear to establish clamping device (2) on wire rope (1), clamping device (2) are equipped with fixed column (5) including setting up sole piece (4) on fixed beam (3) on sole piece (4), and fixed column (5) are gone up the cover and are equipped with movable block (6), are equipped with pressure sensor (7) on movable block (6), and it is just fixed mutually with the extension bar rod end of pneumatic cylinder (8) to be connected with pneumatic cylinder (8) on pressure sensor (7), still be equipped with between sole piece (4) and movable block (6) friction disc (10), friction disc (10) below is equipped with draws pressure sensor (11). The utility model has the advantages of simple structure, energy loss is few, efficient, the security is high, stability is good.
Description
Technical field
This utility model relates to a kind of tensile force automatic regulating system, particularly relates to a kind of lift car up-running over-speed protection system.
Background technology
In general, elevator is the device of transporting passengers and goods in skyscraper, and it is connected with the hoist ropes utilizing drive motor to implement lifting.Elevator brake and upward travel protector, as the safety guard of elevator, are directly connected to the serviceability of elevator and the safety of passenger survival property.
Development along with elevator industry; countries in the world are also more and more higher to the requirement of lift running safety; in CEN standard EN81-1 " elevator manufacture with the install safety standard " version in 1998 formulated, the elevator of the 9.10th article of clear stipulaties tractive driving should install car protection device for over-speed ascending.Traditional commonly used mechanical type rope brake of car up-running over-speed protection system; although mechanical type rope brake has the feature of simple in construction, easy care; but also in safety, stability, exist certain hidden danger service life; therefore how to improve existing lift car up-running over-speed protection system, become problem demanding prompt solution.
Utility model content
The purpose of this utility model is in that, it is provided that a kind of lift car up-running over-speed protection system.
For solving above-mentioned technical problem; the technical scheme that this utility model provides is as follows: a kind of lift car up-running over-speed protection system; including the clamping device worn on a steel cord; clamping device includes the sole piece being arranged on fixing beam; sole piece is provided with fixing post; being arranged with movable block on fixing post, movable block is provided with pressure transducer, pressure transducer is connected to hydraulic cylinder and the extension bar rod end with hydraulic cylinder fixes；It is connected with sedan-chair return pulley at clamping device, it is provided with regulating wheel between clamping device and sedan-chair return pulley, described sedan-chair return pulley is provided with velocity sensor, and described velocity sensor is connected to data collecting system, data collecting system and pressure transducer and pull pressure sensor；The rear end of described hydraulic cylinder is connected to 3-position 4-way servo valve through oil circuit and is connected with the P end of 3-position 4-way servo valve, and the A end of 3-position 4-way servo valve is connected to the first check valve, and the first check valve is connected to gear pump, and gear pump is connected to fuel tank；Being also associated with stop valve, accumulator and pressure switch between 3-position 4-way servo valve and the first check valve, the B end of described 3-position 4-way servo valve is connected to the second check valve, and the second check valve is connected with fuel tank；The T end of described 3-position 4-way servo valve is connected with the rod end of hydraulic cylinder；Described pressure transducer, pull pressure sensor are connected with I/O card with velocity sensor, and I/O card is also connected with the electrically end of 3-position 4-way servo valve.
In above-mentioned lift car up-running over-speed protection system, being also associated with Pressure gauge and electromagnetic relief valve between the first check valve and gear pump, electromagnetic relief valve is connected with fuel tank.
Compared with prior art, this utility model is provided with friction plate between movable block and sole piece, is fixed with hydraulic cylinder at movable block through pressure transducer, by the movement of the telescopic drive movable block of hydraulic cylinder, so that friction plate clamping steel wire rope, play the effect that car is carried out speed limit, brake.The pressure transducer that this utility model passes through to be fixed on movable block is to detect the hydraulic cylinder pressure to steel wire rope, by the pull pressure sensor that is connected with friction plate to detect the steel wire rope frictional force to friction plate effect, by being arranged on velocity sensor on sedan-chair return pulley to detect the rotating speed of sedan-chair return pulley.Thus, this utility model is by collection to the sensor information, then controls 3-position 4-way servo valve the feeding of hydraulic cylinder, load are controlled.Hydraulic circuit has been done improvement by this utility model, and when system pressure reaches certain value, pressure switch signals and makes the reversal valve energising that electricity is grown in overflow valve switch to right position, and gear pump unloads through overflow valve, and now, system pressure is kept by accumulator.When system pressure drops to certain value, pressure switch sends reverse signal, and electromagnetic relief valve is in stress state, and gear pump is again to system fuel feeding, and accumulator is oil-filled simultaneously.Feeding with high precision when this utility model can realize low-speed motion controls, and in conjunction with the heat transfer agent such as pressure, rotating speed, the clamping dynamics of clamping device is controlled, thus improving maximum chucking power.This utility model is also by the constant voltage energy adopting gear pump, accumulator and electromagnetic relief valve, it is ensured that gear pump has certain discharge time, and charge oil pressure changes in certain scope, and simple in construction, energy loss are few, and efficiency is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is hydraulic principle schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with embodiment, this utility model is further described.
Embodiment:
A kind of lift car up-running over-speed protection system; as shown in Figures 1 and 2; including the clamping device 2 being located on steel wire rope 1; clamping device 2 includes the sole piece 4 being arranged on fixing beam 3; sole piece 4 is provided with fixing post 5; being arranged with movable block 6 on fixing post 5, movable block 6 is provided with pressure transducer 7, pressure transducer 7 is connected to hydraulic cylinder 8 and the extension bar rod end with hydraulic cylinder 8 fixes；Being additionally provided with friction plate 10 between sole piece 4 and movable block 6, friction plate 10 is connected with pull pressure sensor 11；It is connected with sedan-chair return pulley 12 at clamping device 2, regulating wheel 14 it is provided with between clamping device 2 and sedan-chair return pulley 12, described sedan-chair return pulley 12 is provided with velocity sensor 15, described velocity sensor 15 is connected to data collecting system 13, and data collecting system 13 is connected with pressure transducer 7 and pull pressure sensor 11；The rear end of described hydraulic cylinder 8 is connected to 3-position 4-way servo valve 16 through oil circuit and is connected with the P end of 3-position 4-way servo valve 16, the A end of 3-position 4-way servo valve 16 is connected to the first check valve 17, first check valve 17 is connected to gear pump 18, and gear pump 18 is connected to fuel tank 19；Being also associated with stop valve 20, accumulator 21 and pressure switch 22 between 3-position 4-way servo valve 16 and the first check valve 17, the B end of described 3-position 4-way servo valve 16 is connected to the second check valve 23, and the second check valve 23 is connected with fuel tank 19；The T end of described 3-position 4-way servo valve 16 is connected with the rod end of hydraulic cylinder 8；Described pressure transducer 7, pull pressure sensor 11 are connected with I/O card 24 with velocity sensor 15, and I/O card 24 is also connected with the electrically end of 3-position 4-way servo valve 16.Being also associated with Pressure gauge 26 and electromagnetic relief valve 25 between the first check valve 17 and gear pump, electromagnetic relief valve 25 is connected with fuel tank 19.
Operation principle: this utility model is provided with friction plate between movable block and sole piece, it is fixed with hydraulic cylinder through pressure transducer at movable block, this utility model Negotiation speed sensor detects the rotating speed of sedan-chair return pulley in real time, when rotating speed reaches the upper limit, namely car speed is when reaching the upper limit, velocity sensor signals to I/O card, I/O card is by controlling 3-position 4-way servo valve, control the movement of the telescopic drive movable block of hydraulic cylinder, so that friction plate clamping steel wire rope, play the effect that car is carried out speed limit, brake.The pressure transducer that this utility model passes through to be fixed on movable block is to detect the hydraulic cylinder pressure to steel wire rope, by the pull pressure sensor that is connected with friction plate to detect the steel wire rope frictional force to friction plate effect, by being arranged on velocity sensor on sedan-chair return pulley to detect the rotating speed of sedan-chair return pulley.Thus, this utility model is by collection to the sensor information, then controls 3-position 4-way servo valve the feeding of hydraulic cylinder, load are controlled.Hydraulic circuit has been done improvement by this utility model, and when system pressure reaches certain value, pressure switch signals and makes the reversal valve energising that electricity is grown in overflow valve switch to right position, and gear pump unloads through overflow valve, and now, system pressure is kept by accumulator.When system pressure drops to certain value, pressure switch sends reverse signal, and electromagnetic relief valve is in stress state, and gear pump is again to system fuel feeding, and accumulator is oil-filled simultaneously.
Claims (2)
1. a lift car up-running over-speed protection system; it is characterized in that: include the clamping device (2) being located on steel wire rope (1); clamping device (2) includes the sole piece (4) being arranged on fixing beam (3); sole piece (4) is provided with fixing post (5); fixing post (5) is arranged with movable block (6); movable block (6) is provided with pressure transducer (7), pressure transducer (7) is connected to hydraulic cylinder (8) and the extension bar rod end with hydraulic cylinder (8) fixes；Being additionally provided with friction plate (10) between sole piece (4) and movable block (6), friction plate (10) is connected with pull pressure sensor (11)；It is connected with sedan-chair return pulley (12) at clamping device (2), regulating wheel (14) it is provided with between clamping device (2) and sedan-chair return pulley (12), described sedan-chair return pulley (12) is provided with velocity sensor (15), described velocity sensor (15) is connected to data collecting system (13), and data collecting system (13) is connected with pressure transducer (7) and pull pressure sensor (11)；The rear end of described hydraulic cylinder (8) is connected to 3-position 4-way servo valve (16) and the P end with 3-position 4-way servo valve (16) is connected through oil circuit, the A end of 3-position 4-way servo valve (16) is connected to the first check valve (17), first check valve (17) is connected to gear pump (18), and gear pump (18) is connected to fuel tank (19)；Stop valve (20), accumulator (21) and pressure switch (22) it is also associated with between 3-position 4-way servo valve (16) and the first check valve (17), the B end of described 3-position 4-way servo valve (16) is connected to the second check valve (23), and the second check valve (23) is connected with fuel tank (19)；The T end of described 3-position 4-way servo valve (16) is connected with the rod end of hydraulic cylinder (8)；Described pressure transducer (7), pull pressure sensor (11) are connected with I/O card (24) with velocity sensor (15), and I/O card (24) is also connected with the electrically end of 3-position 4-way servo valve (16).
2. lift car up-running over-speed protection system according to claim 1; it is characterized in that: being also associated with Pressure gauge (26) and electromagnetic relief valve (25) between the first check valve (17) and gear pump, electromagnetic relief valve (25) is connected with fuel tank (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620073144.4U CN205367375U (en) | 2016-01-26 | 2016-01-26 | Elevator car goes upward overspeed protection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620073144.4U CN205367375U (en) | 2016-01-26 | 2016-01-26 | Elevator car goes upward overspeed protection system |
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| CN205367375U true CN205367375U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620073144.4U Active CN205367375U (en) | 2016-01-26 | 2016-01-26 | Elevator car goes upward overspeed protection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480810A (en) * | 2016-01-26 | 2016-04-13 | 森赫电梯股份有限公司 | Car upgoing overspeed protection system for elevator |
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2016
- 2016-01-26 CN CN201620073144.4U patent/CN205367375U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480810A (en) * | 2016-01-26 | 2016-04-13 | 森赫电梯股份有限公司 | Car upgoing overspeed protection system for elevator |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |