JP3990192B2 - elevator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to improvement of an elevator driven by, for example, a hydraulic cylinder.
[0002]
[Prior art]
In land elevators, a table and a counterweight that matches the weight of the table are suspended via a common wire rope, and the table and the counterweight are moved up and down by driving the wire rope. However, providing the counterweight increases the weight of the elevator and increases the installation space, so that it is difficult to apply the elevator to the elevator provided in the ship.
[0003]
Further, as disclosed in, for example, JP-A-8-231157, there has been an elevator that converts the movement of a hydraulic cylinder into the movement of a wire rope through multiple winding sheaves. However, in this case, a change in volume occurs in the hydraulic oil in the cylinder tube with a change in load applied to the hydraulic cylinder, and it is inevitable that the cylinder rod moves relative to the cylinder tube. In order to suppress the movement of the cylinder rod, if the pressure receiving area of the piston is increased, there is a problem that the apparatus is increased in size.
[0004]
The present invention has been made in view of the above problems, and an object thereof is to provide a structure suitable for an elevator provided in a ship.
[0005]
[Means for Solving the Problems]
A first invention includes a wire rope for suspending an elevator car, a sheave around which the wire rope is hung, and a hydraulic cylinder to which the sheave is connected, and the elevator operates by extending and contracting the hydraulic cylinder. Applicable to elevators with a configuration that raises and lowers the kite.
[0006]
The hydraulic cylinder includes a cylinder rod that protrudes from the cylinder tube so as to extend and contract, and a rod brake that locks the movement of the cylinder rod relative to the cylinder tube. The rod brake includes a cylindrical deformation tube facing the outer peripheral surface of the cylinder rod, and a pressure chamber formed around the deformation tube, and the deformation tube has a thin-walled cylindrical buckling tube portion, An outer block that forms a pressure chamber between the deformed tube and a structure in which a large number of bulged portions are pressed against the outer peripheral surface of the cylinder rod by buckling deformation in which the buckled cylindrical portion expands due to the pressure guided to the pressure chamber. A semi-annular divided inner block interposed between the outer block and the deformation tube, and a pressure deformation restricting portion facing the outer peripheral surface of the deformation tube in the inner block. It was characterized by that.
[0011]
Operation and effect of the invention
According to the first invention, when the elevator rod is stopped, the outer peripheral surface of the cylinder rod is secured, so that the hydraulic cylinder expands and contracts even if the load acting on the hydraulic cylinder changes with getting on and off the elevator rod. This is locked and the elevator car can be held at a predetermined stop position.
[0012]
Since the rod brake locks the expansion and contraction operation of the hydraulic cylinder, the piston pressure receiving area of the hydraulic cylinder that drives the sheave is not increased more than necessary, and an increase in the weight of the hydraulic cylinder can be suppressed. Since the installation space of the hydraulic cylinder is small, it can be applied to an elevator provided in a ship.
[0013]
And When a predetermined pressure is introduced into the pressure chamber, the deformable tube swells inward, and the bulged portion of the deformable tube is pressed against the outer peripheral surface of the cylinder rod, thereby securing the outer peripheral surface of the cylinder rod. For this reason, the movement of the cylinder rod relative to the cylinder tube can be locked over the entire stroke by adjusting the pressure guided to the pressure chamber.
[0014]
And A pressure chamber can be defined by the deformed tube itself, and the structure can be simplified. And it becomes possible to form a deformation | transformation tube with a metal, the surface rigidity is ensured, and sufficient durability is acquired.
[0015]
And When the deformable tube comes into contact with the pressure deformation restricting portion, the deformable tube is restricted from being excessively deformed.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment in which the present invention is applied to a passenger cargo elevator provided in an escort ship will be described with reference to the accompanying drawings.
[0018]
As shown in FIGS. 1 to 3, the elevator rod 1 is lifted and lowered over nine layers from the fifth deck to the first deck and from the 01 deck to the 04 deck in the ship, and the total stroke becomes 20 m or more.
[0019]
The elevator car 1 is guided in the vertical direction by two guide rails 25. Each guide rail 25 is offset from the center of the elevator rod 1 to the bow side and is disposed so as to sandwich the elevator rod 1. The elevator car 1 is provided with rollers 26 that are in rolling contact with the respective guide rails 25.
[0020]
The elevator converts the movement of the hydraulic cylinder (hydraulic cylinder) 10 into the movement of the elevator rod 1 through four wire ropes 20 wound around the sheaves 21 to 24. The sheave 21 is connected to the rod tip of the hydraulic cylinder 10, and the sheaves 22 to 24 are fixed to the hull. The base end portion of the cylinder tube 12 of the hydraulic cylinder 10 is connected to the hull. When the hydraulic cylinder 10 is expanded and contracted, the sheave 21 moves up and down, and the elevator rod 1 moves up and down via the wire rope 20 as the sheave 21 moves up and down. The hydraulic cylinder 10 is provided with a rod brake 130 that stops its expansion and contraction operation by hydraulic pressure.
[0021]
An operation panel 3 shown in FIG. 10 is provided inside the elevator car 1, and an operation panel 4 shown in FIG. 11 is provided on each floor. A controller (not shown) receives the commands from the operation panels 3 and 4 and controls the raising and lowering of the elevator car 1. A cable (not shown) extending from the operation panel 3 is guided to the controller via the cable relay 5.
[0022]
The elevator rod 1 is provided with an elevator door 27 facing the stern side and an elevator door 28 facing the boat side. Each elevator door 27, 28 is manually opened and closed.
[0023]
The hull is provided with a trunk 29 through which the elevators are accommodated. The bulkhead 30 of the trunk 29 is provided with a manual inner hull door 19 and a semi-automatic fire door 18 on each floor. Four fire doors 18 provided on each floor on the 01 deck to 04 deck face the elevator door 27, and five fire doors 18 provided on each floor on the fifth deck to the first deck face the elevator door 28. To be arranged. A camera (not shown) for monitoring the state of the fire doors 18 on each floor is provided, and each fire door 18 is automatically opened and closed by remote operation and can be opened and closed manually.
[0024]
As shown in FIG. 4, the hydraulic circuit disposed in the hydraulic cylinder 10 includes a hydraulic source circuit 70 that guides the driving pressure P1 and the tank pressure T from the main pump 71, and the hydraulic source circuit 70 when the elevator rod 1 rises. The rising valve passage 11 for supplying pressurized hydraulic oil from the hydraulic cylinder 10 to the hydraulic cylinder 10, the lowering valve passage 12 for returning the hydraulic oil from the hydraulic cylinder 10 to the tank 79 when the elevator rod 1 is lowered, and the hydraulic cylinder 10 from the hydraulic cylinder 10 in an emergency. And an emergency lowering valve passage 53 for returning the hydraulic oil to the tank 79. A manual opening / closing valve 54 is interposed in the middle of the emergency lowering valve passage 53.
[0025]
A pressure temperature compensation type flow rate adjustment valve 60, a flow rate control valve 40, and pilot check valves 62 and 61 are provided in the middle of the ascending valve passage 51 and the descending valve passage 52, respectively. Note that the ascending valve passage 51 and the descending valve passage 52 may be integrated into one passage, and the supply and discharge of hydraulic oil may be switched via a switching valve.
[0026]
The flow rate adjusting valve 60 determines the maximum ascent speed and the maximum descending speed of the elevator rod 1, and restricts the flow rate of hydraulic oil supplied to and discharged from the hydraulic cylinder 10 to a predetermined value or less.
[0027]
The pilot check valves 61 and 62 stop the hydraulic oil from escaping when the elevator rod 1 is stopped. The pilot check valves 61 and 62 are closed by setting the leakage amount of the hydraulic oil to zero and forced by the pilot pressure introduced through the electromagnetic valve 63. The valve opens.
[0028]
The flow rate control valve 40 performs speed pattern control for smoothly changing the acceleration / deceleration of the elevator car 1, and its opening degree is gradually changed by the driving pressure introduced through the electromagnetic valve 65, the check valve 66, and the delay throttle 67. To do.
[0029]
As shown also in FIG. 5, the flow control valve 40 includes a spool 41 having two land portions 48 and 49, a housing hole 32 in which the spool 41 is slidably received, and a space between the spool 41 and the housing hole 32. , A port 38 and 39 for opening the housing hole 32 to guide the hydraulic oil, and a pair of driving pressure chambers 34 and 35 for guiding the driving pressure to both ends of the spool 41. The spool 41 is driven. By moving by the pressure difference received from the pressure chambers 34 and 35, the flow path length (throttle length) of the gap 42 and the flow path areas of the ports 38 and 39 are continuously changed.
[0030]
The drive pressure P and the tank pressure T are selectively guided to the drive pressure chambers 34 and 35 via the electromagnetic valve 65. When the electromagnetic valve 65 is switched to the position a, the tank pressure T is guided to the driving pressure chamber 34, the driving pressure P is guided to the driving pressure chamber 35, and the spool 41 moves in the valve closing direction. On the other hand, when the electromagnetic valve 65 is switched to the position b, the driving pressure P is guided to the driving pressure chamber 34, the tank pressure T is guided to the driving pressure chamber 35, and the spool 41 moves in the valve opening direction.
[0031]
A check valve 66 and a delay throttle 67 are disposed in parallel in the middle of passages 36 and 37 connecting the drive pressure chambers 34 and 35 and the electromagnetic valve 65. The check valve 66 is opened with respect to the hydraulic oil guided from the electromagnetic valve 65 to the drive pressure chambers 34 and 35, and is closed with respect to the hydraulic oil flowing out of the drive pressure chambers 34 and 35. Each delay throttle 67 applies resistance to the hydraulic oil flowing out from the drive pressure chambers 34 and 35, and adjusts the moving speed of the spool 41.
[0032]
When the spool 41 is in the position shown in the drawing, the land portion 49 is fitted into the housing hole 32 with a predetermined overlap, and an annular gap 42 is formed between the land portion 49 and the housing hole 32. Even when the spool 41 is in the closed position, the hydraulic oil flows through the ports 38 and 39 through the gap 42, and the flow path length of the gap 42 is gradually shortened as the spool 41 moves in the opening direction at the closed position. Thus, when the land portion 49 exceeds the overlap, the flow path areas of the ports 38 and 39 gradually increase (see FIG. 6).
[0033]
Seal rings 44 and 45 are interposed on the outer circumferences of the land portions 48 and 49 of the spool 41, respectively. The seal rings 44 and 45 are in sliding contact with the inner peripheral surface of the housing hole 32, whereby the housing hole 32 and the spool 41 are in contact with each other. A gap 42 is formed therebetween, and the drive pressure chambers 34 and 35 are sealed. The seal rings 44 and 45 are made of a low friction material and reduce the sliding resistance of the spool 41.
[0034]
Since the land portion 49 of the spool 41 is fitted in the housing hole 32 with a gap 42 at the closed position as shown in the figure, the flow path length of the gap 42 is changed by increasing or decreasing the overlap. Can be gradually increased or decreased. Further, since the gap 42 is provided, the sliding failure of the spool 41 due to the influence of dust or the like can be prevented, and the stable operability of the flow control valve 40 is ensured.
[0035]
For example, if the outer diameter of the spool 41 is 100 mm, the overlap is set to 20 mm and the gap 42 is set to about 0.5 mm. Even when the spool 41 is in the closed position, hydraulic oil of about 1000 l / min flows, When it reaches the fully open position, the hydraulic oil of about 6000 l / min is allowed to flow.
[0036]
The controller inputs the command signals from the operation panels 3 and 4 and the position detection signal of the elevator rod 1, and performs sequence control to switch the positions of the electromagnetic valves 63 and 65 at a predetermined timing, thereby automatically moving the elevator rod 1 Lift up and down.
[0037]
When the elevator rod 1 starts to rise, first, the solenoid valves 63 and 65 on the side of the rise valve passage 51 are simultaneously switched to immediately open the pilot check valves 61 and 62 and gradually turn the flow control valve 40 on. Open the valve. The operation of the flow control valve 40 will be described in detail. When the electromagnetic valve 65 is switched from the position a to the position b, the driving pressure P is led to the driving pressure chamber 34 and the tank pressure T is led to the driving pressure chamber 35. The spool 41 moves in the opening direction. At this time, since the delay throttle 67 provides resistance to the hydraulic fluid flowing out from the drive pressure chamber 35, the spool 41 is opened after the pilot check valves 61 and 62 are opened as shown in FIG. It takes about 1 to 3 seconds to finish moving.
[0038]
As the spool 41 moves in the closed position to reduce the overlap, the flow path length of the gap 42 becomes shorter, and the flow rate guided to the hydraulic cylinder 10 through the gap 42 gradually increases. Then, as the spool 41 moves at the open position where the overlap is zero and the flow area of each port 38, 39 is increased, the flow rate guided to the hydraulic cylinder 10 gradually increases. As a result, the flow rate of the hydraulic oil flowing into the hydraulic cylinder 10 gradually increases according to the stroke of the spool 41, and speed pattern control is performed to smoothly change the acceleration of the hydraulic cylinder 10.
[0039]
The elevator car 1 is accelerated through the flow control valve 40 and then ascends at a constant speed V1 through the flow control valve 60.
[0040]
When stopping the lift of the elevator rod 1, first, the solenoid valves 65, 63 on the side of the lift valve passage 51 are switched with a predetermined time difference, and after the closing operation of the flow control valve 40 is terminated, each pilot The check valves 61 and 62 are closed.
[0041]
When the electromagnetic valve 65 is switched from the position b to the position a, the driving pressure P is guided to the driving pressure chamber 35, the tank pressure T is guided to the driving pressure chamber 34, and the spool 41 moves in the closing direction. At this time, since the delay throttle 67 provides resistance to the hydraulic fluid flowing out from the drive pressure chamber 34, it takes about 1 to 3 seconds for the spool 41 to finish moving as shown in FIG.
[0042]
As the spool 41 moves at the open position to reduce the opening area of the ports 38 and 39, the flow rate guided to the hydraulic cylinder 10 gradually decreases. As the spool 41 moves in the closed position to increase the overlap, the flow rate guided to the hydraulic cylinder 10 through the gap 42 gradually decreases. As a result, the flow rate of the hydraulic oil flowing out from the hydraulic cylinder 10 gradually decreases in accordance with the stroke of the spool 41, and speed pattern control is performed to smoothly change the deceleration of the hydraulic cylinder 10.
[0043]
Finally, the pilot check valves 61 and 62 are closed, and the supply of hydraulic oil to the hydraulic cylinder 10 is stopped.
[0044]
When the elevator rod 1 is lowered, the speed pattern control for smoothly changing the acceleration / deceleration of the hydraulic cylinder 10 is performed by gradually opening and closing the flow control valve 40 interposed in the lowering valve passage 52 in the same manner as in the raising. Done.
[0045]
As a result, the elevator for cargo can move up and down at a high speed while mitigating the impact at the time of starting and stopping, and can carry people smoothly in a short time. And it can suppress that the natural vibration by elastic deformation of the wire rope 1 and hydraulic fluid arises, and it does not need to give an uncomfortable feeling to a passenger.
[0046]
The hydraulic circuit disposed in the hydraulic cylinder 10 is configured as described above. The flow rate control valve 40 gradually opens and closes according to the driving pressure guided through the electromagnetic valve 65 and the delay throttle 67, so that the hydraulic cylinder 10 Speed pattern control is performed to smooth the acceleration / deceleration speed. For this reason, it is not necessary to use a servo valve or the like, so that the reliability of the hydraulic circuit can be improved and the cost of the product can be reduced.
[0047]
As shown in FIG. 8, the hydraulic cylinder 10 includes a cylindrical cylinder tube 12, an oil chamber 14 defined by a piston (not shown) inside the cylinder tube 12, and one end of the cylinder tube 12 coupled to the piston. A protruding cylinder rod 11, a cylinder head 13 that slidably supports the cylinder rod 11 with respect to the cylinder tube 12, and a rod brake 130 that locks the movement of the cylinder rod 11 relative to the cylinder tube 12 are provided.
[0048]
The rod brake 130 is provided on the opening end side of the cylinder tube 12 and ties the outer peripheral surface of the cylinder rod 11 to stop the expansion / contraction operation of the hydraulic cylinder 10.
[0049]
As shown in FIG. 9, the rod brake 130 includes an outer block 131 fixed to the cylinder tube 12 via the cylinder head 13, a deformation tube 141 interposed in the outer block 131, and the outer block 131 and the deformation tube. 141 includes an inner block 151 interposed between the two, and a retainer 161 fastened to the open end of the outer block 131. The outer block 131 is a strength member and forms the main body of the rod brake 130. The annular retainer 161 is fastened to the outer block 131 via a plurality of bolts 162, and fixes the inner block 151 between the outer block 131.
[0050]
The metal deformable tube 141 includes a thin cylindrical buckling tube portion 142 and annular collar portions 143 formed at both ends of the buckling tube portion 142 by machining. The buckling tube portion 142 has an inner diameter of about 130 mm, whereas its plate thickness t is, for example, about 0.8 mm. As a material of the deformable tube 141, for example, stainless steel, aluminum, or brass is used.
[0051]
A pressure chamber 144 is formed between the outer block 131 and the deformation tube 141, and the outer peripheral surface of the cylinder rod 11 is bound by buckling deformation in which the buckling tube portion 142 swells inward by the hydraulic pressure guided to the pressure chamber 144. It is supposed to be.
[0052]
Two O-rings 145 are interposed between the outer block 131 and each collar 143 of the deformation tube 141, and the pressure chamber 144 is sealed by the O-rings 145.
[0053]
An oil passage 132 communicating with the pressure chamber 144 is formed in the outer block 131. In the pressure chamber 144, the driving pressure P2 and the tank pressure T from the small pump 72 are selectively guided through the hydraulic circuit shown in FIG.
[0054]
The inner block 151 is divided into a semi-annular shape, and is interposed between the outer block 131 and the deformation tube 141. The inner peripheral surface of the inner block 151 is opposed to the buckled tube portion 142 as a pressure deformation restricting portion with a gap s. A through hole 152 is formed in the inner block 151, and the pressure chamber 144 and the oil passage 132 are communicated with each other through the through hole 152.
[0055]
As shown in FIG. 4, the opening degree of the pressure chamber 144 of the rod brake 130 is gradually opened and closed by the driving pressure guided through the electromagnetic valve 68.
[0056]
The rod brake 130 is configured as described above. When a high pressure is introduced into the pressure chamber 144, the buckling tube portion 142 of the deformation tube 141 is elastically deformed inward by the hydraulic pressure of the pressure chamber 144, and then buckled and deformed in a vertical stripe shape. The protruding portion is pressed against the outer peripheral surface of the cylinder rod 11 to stop the movement of the cylinder rod 11 relative to the cylinder tube 12.
[0057]
At this time, the deformable tube 141 can be pressurized until a large number of vertical stripes are generated in the buckled tube portion 142. The difference between the buckling pressure and the pressure at the time of elastic deformation at the time of contact becomes an effective pressure ΔP, and the cylinder rod 11 is compressed. This effective pressure ΔP slightly decreases due to the rigidity of the cylinder rod 11. The product of the effective pressure ΔP and the effective area A of the deformation tube 141 is the contact force F.
[0058]
For example, the pressure during elastic deformation is 20 kgf / cm 2, and the pressure during buckling deformation is 50 If kgf / cm 2, the effective pressure ΔP is calculated by the following equation.
ΔP≈ (50−20) × 0.8 = 24 kgf / cm 2 (1)
When the inner diameter of the deformation tube 141 is 13.12 cm and the effective buckling length is 3.0 cm, the effective area A is calculated by the following equation.
A≈13.12 × (π / 4) × 3.0 = 404 cm 2 (2)
The total contact force F is calculated by the following formula.
F = ΔP × A≈9700 kgf (3)
When the friction coefficient μ between the deformation tube 141 and the cylinder rod 11 is 0.2, the locking force Fs is calculated by the following equation.
Fs = F · μ = 1940 kgf (4)
Therefore, the locking force Fs can be about 2000 kgf, and the cylinder rod 11 can be secured sufficiently.
[0059]
On the other hand, when the tank pressure is guided to the pressure chamber 144, the buckled tube portion 142 of the deformation tube 141 returns to its original shape, and the cylinder rod 11 is released from being locked.
[0060]
The deformation tube 141 receives pressure and expands in diameter, but when it comes into contact with the inner block 151, further deformation is stopped and the shape of the inner wall surface of the cylinder tube 12 is maintained. As a result, troubles caused by excessive deformation of the deformation tube 141 are avoided.
[0061]
Since the deformation tube 141 itself defines the pressure chamber 144, the structure can be simplified. And the deformation | transformation tube 141 is formed with a metal, the surface rigidity is ensured and sufficient durability is acquired.
[0062]
The rod brake 130 is configured as described above, and when the elevator rod 1 is stopped, the load acting on the hydraulic cylinder 10 is changed by getting on and off the elevator rod 1 by securing the outer peripheral surface of the cylinder rod 11. In addition, the hydraulic cylinder 10 is locked to extend and contract, and the elevator rod 1 can be held at a predetermined stop position.
[0063]
In addition, the vertical fluctuation of the elevator rod 1 due to the elongation of the wire rope 20 is suppressed to, for example, 20 mm or less by increasing the number of the wire ropes 20 to four.
[0064]
If the rod brake 130 is not provided, the hydraulic cylinder 10 contracts as the hydraulic oil in the oil chamber 14 is compressed as the load on the elevator rod 1 increases, and the movement of the hydraulic cylinder 10 is applied to the sheave 21. Since the signal is amplified and transmitted to the elevator car 1 via the wire rope 20, the vertical fluctuation of the elevator car 1 becomes large. In response to this, it is conceivable to increase the piston pressure receiving area of the hydraulic cylinder 10, but the weight of the hydraulic cylinder 10 increases and the installation space increases, so that it is difficult to apply to an elevator provided in the ship. .
[0065]
In the present invention, since the rod brake 130 is configured to lock the expansion and contraction operation of the hydraulic cylinder 10, the piston pressure receiving area of the hydraulic cylinder 10 that drives the sheave 21 is not increased more than necessary, and the weight of the hydraulic cylinder 10 is increased. Since the increase can be suppressed and the installation space of the hydraulic cylinder 10 can be small, it can be applied to an elevator provided in a ship.
[0066]
Hereinafter, the operation of the elevator will be described.
[0067]
At the time of activation, the control power is turned on by a control panel (not shown), the electric motor 73 is activated, the cooling water stop valve 74 that operates the hydraulic pumps 71 and 72 by unloading is opened, and the cooling seawater flows through the water cooling cooler 75. The stop storage position of the elevator car 1 is the fifth deck.
[0068]
When the elevator rod 1 is stopped, only the small pump 72 is on-loaded, and the rod brake 130 locks the expansion / contraction operation of the hydraulic cylinder 10 by the driving pressure P2 from the small pump 72.
[0069]
When an operation request is received from the operation panels 3 and 4, the rod brake 130 is released, and at the same time, the hydraulic pressure of the main pump 71 is on-loaded and the hydraulic cylinder 10 is operated to raise and lower the elevator rod 1. When the elevation of the elevator car 1 stops, the hydraulic pressure of the main pump 71 is unloaded and the rod brake 130 is activated.
[0070]
For example, when the elevator deck 1 is on the fourth deck, and the elevator deck 1 is requested to rise through the operation panel 4 of the first deck, the elevator fence 1 moves from the fourth deck to the first deck. In the middle of this operation, when the elevator deck 1 is requested to rise through the operation panel 4 of the second deck, the elevator rod 1 stops at the second deck if it is 1.5 m or more from the second deck, and then the first deck. Head for. At this time, the sequence control at the time of ascending is performed, and if the occupant makes a request for ascending toward the first to 04th deck on the second deck, it is accepted, but the descending request is ignored. If there is a request to stop on the first deck and head towards the 01-04 deck, this is accepted. When the stop of the ascent request on 02, 03 deck is completed, it responds to the next request. If there is a lowering request from the operation panel 4 of the 04 deck during the ascending operation, this is reserved and stored as a second request. In this way, only one reservation for descent or ascent is accepted while ascending or descending.
[0071]
An example of operation is shown below.
(1) Press the up or down button on the ship side operation panel 4. (Assuming that the up button is pressed)
(2) Stop and stop if it meets the question.
(3) Open the inner hull door 19 on the ship side and open the elevator doors 27 and 28 of the elevator shaft 1.
(4) From inside the elevator shaft 1, close the inner door 19 with the hull on the ship side and apply the manual lock.
(5) Close the elevator doors 27 and 28 of the elevator car 1 and apply the manual lock.
(6) Press the destination floor button that is lifted from the operation panel 3 in the elevator.
(7) The ascending display is lit. The current floor display is lit. When moving, the current floor will go out and the next floor will flash. The planned stoppage floor is lit.
(8) Stop at the next scheduled stoppage.
(9) Open the elevator doors 27 and 28 of the elevator shaft 1 and open the inner door 19 with the hull on the ship side. The person who gets off closes the inner door 19 with the hull on the ship side and locks it manually. A person inside the elevator car 1 closes the elevator doors 27 and 28 of the elevator car 1 and applies a manual lock.
(10) When the two limit switches are activated by closing and manually locking the inner door 19 with the hull and the elevator doors 27 and 28 on the ship side, the ship rises to the next floor again.
(11) In the case of an emergency movement from the fifth deck to the 04 deck, after pressing the 04 button on the elevator operating panel 3 and pressing the passing switch, the lamp is turned on and goes straight to the 04 deck. When it stops at the 04 deck, the passing lamp goes out.
[0072]
When a series of elevator operations are finished and there is no next reservation, the elevator rod 1 is stopped at the final position, but when the inner door 19 with the hull and the elevator doors 27 and 28 are closed, the fifth deck which is the storage position is reached. Moves automatically and stays stopped. In this storage stop, the rod brake 130 is not operated, and the hydraulic pumps 71 and 72 are all unloaded. When the stop is completed, the electric motor 73 stops. In response to the next request, the electric motor 73 is activated, the main pump 71 is onloaded, and the operation is started. The rod brake 130 is released, and the small pump 72 is unloaded. If a reservation is input during the storing operation, the storing operation is canceled and the movement to the calling floor is continued. Alternatively, stop and start working in the reverse direction. The position of the elevator car 1 is detected by the rotary encoder 9, and these are judged.
[0073]
When the operation of the elevator rod 1 is stopped due to a failure, the passenger gets out of the elevator rod 1 and climbs up inside the trunk 29 to open the inner door 19 with the hull on the ship side so that it can escape.
[0074]
Next, another embodiment shown in FIGS. 12 and 13 will be described. In addition, the same code | symbol is attached | subjected to the same component as the said embodiment.
[0075]
The rod brake 130 includes a metal deformable tube 171 and a resin lashing tube 181 that tightens the deformable tube 171 with a pressure guided to the pressure chamber 144.
[0076]
The metal deformable tube 171 is formed with a longitudinal groove 172 having a predetermined width along the axial direction, and is tightened by the lashing tube 181 so that the opening width of the longitudinal groove 172 is reduced to reduce the diameter. ing.
[0077]
Cylindrical spacers 173 and 174 are provided side by side with the deformation tube 171 in the axial direction. The deformed tube 171 is sandwiched between cylindrical spacers 173 and 174 at both ends.
[0078]
The lashing tube 181 is formed into a cylindrical shape by machining using MC nylon, and a pressure chamber 144 is formed between the tying tube 181 and the outer block 131.
[0079]
Two O-rings 145 are interposed between the outer block 131 and the securing tube 181, and the pressure chamber 144 is sealed by the O-rings 145.
[0080]
When the discharge pressure from the hydraulic pump 135 is guided to the pressure chamber 144, the lashing tube 181 tightens the deformation tube 171, and the inner peripheral surface of the deformation tube 171 is pressed against the outer peripheral surface of the outer peripheral surface of the cylinder rod 11. The movement of the cylinder rod 11 with respect to 12 is locked.
[0081]
By forming the deformable tube 171 from metal, the surface rigidity is ensured and sufficient durability is obtained.
[0082]
By deforming the deformable tube 171 by expanding and contracting the opening width of the longitudinal groove 172, it is possible to increase the amount of deformation of the inner peripheral surface, and the cylinder rod 11 can be securely bound. The deformation tube 171 can secure a deformation amount of about 1%. For example, when the inner diameter is about 100 mm, a deformation amount of about 1 mm can be secured.
[0083]
As another embodiment, as shown in FIG. 14, the longitudinal groove 172 may be formed to be inclined with respect to the axial direction of the deformable tube 171.
[0084]
In this case, the deformation tube 171 is deformed while keeping its cross section circular, so that the deformation amount of the inner peripheral surface can be increased, and even when the cylindrical portion 42 of the cylinder rod 11 is formed of a resin material. The cylinder rod 11 can be securely secured.
[0085]
As another embodiment, as shown in FIG. 15, the securing tube 182 may be formed into a cylindrical shape by using a fluororesin as a material. A lip portion 183 that is in contact with the outer block 131 is integrally formed, and the pressure chamber 144 is sealed.
[0086]
In this case, by forming the tying tube 182 with a fluororesin, heat resistance and durability can be improved, and the structure can be simplified by eliminating the O-ring.
[0087]
The rod brake of the present invention can be applied not only to a hydraulic cylinder but also to other hydraulic cylinders or air cylinders.
[0088]
The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.
[Brief description of the drawings]
FIG. 1 is a plan view of an elevator showing an embodiment of the present invention.
2 is a side view as seen from the direction of arrow A in FIG.
3 is a front view of the same as seen from the direction of arrow B in FIG. 1. FIG.
FIG. 4 is a hydraulic circuit diagram of the elevator.
FIG. 5 is a sectional view of the same flow control valve.
FIG. 6 is a diagram showing the opening degree and flow rate characteristic of the flow rate control valve at the same time when rising starts.
FIG. 7 is a diagram showing the opening degree and flow rate characteristics of the flow control valve at the same time when the descent is stopped;
FIG. 8 is a cross-sectional view of a hydraulic cylinder showing an embodiment of the present invention.
FIG. 9 is a cross-sectional view of the rod brake.
FIG. 10 is a front view of an operation panel similarly provided in the elevator car.
FIG. 11 is a front view of an operation panel similarly provided on the ship side.
FIG. 12 is a cross-sectional view of a rod brake showing another embodiment.
FIG. 13 is a perspective view of a deformed tube and the like.
FIG. 14 is a perspective view of a deformed tube or the like showing still another embodiment.
FIG. 15 is a cross-sectional view of a rod brake showing still another embodiment.
[Explanation of symbols]
1 elevator
10 Hydraulic cylinder
20 wire rope
21-24 sieve
130 Rod brake
141 Deformation tube
142 Buckling tube
144 Pressure chamber
151 Inner block (pressure deformation regulating part)
171 Deformation tube
172 Vertical groove
181 Bondage Tube

Claims (1)

A wire rope that suspends the elevator car, a sheave around which the wire rope is hung, and a hydraulic cylinder that is connected to the sheave, and the elevator car moves up and down when the hydraulic cylinder expands and contracts. and an elevator has a cylinder rod the hydraulic cylinder to telescopically protruding from the cylinder tube, and a rod brake for locking the movement of the cylinder rod relative to the cylinder tube, the rod brake, the outer peripheral surface of the cylinder rod And a pressure chamber formed around the deformation tube. The deformation tube has a thin cylindrical buckling tube portion, and the buckling tube portion is the pressure chamber. A large number of bulging parts push against the outer peripheral surface of the cylinder rod due to buckling deformation that swells due to the pressure guided to the cylinder. An outer block that forms a pressure chamber between the deformable tube and an inner block that is divided between the outer block and the deformed tube and is divided into a semi-annular shape. The elevator further comprises a pressure deformation restricting portion facing the outer peripheral surface of the deformation tube .

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