JP7470651B2 - Elevator Equipment - Google Patents

Description

The present invention relates to an elevator system equipped with an electrically operated emergency stop device.

Elevator systems are equipped with a governor and an emergency stop device to constantly monitor the ascending and descending speed of the car and bring the car to an emergency stop if it becomes overspeeding to a certain extent. Generally, the car and the governor are connected by a governor rope, and when an overspeeding state is detected, the governor restrains the governor rope, activating the emergency stop device on the car side and bringing the car to an emergency stop.

In such elevator systems, it is difficult to reduce space and costs because a long governor rope is laid inside the hoistway. In addition, if the governor rope sways, it is easy for the governor rope to interfere with structures inside the hoistway.

In response to this, an emergency stop device that does not use a governor rope and is electrically operated has been proposed. The technology described in Patent Document 1 is known as a conventional technology related to such an emergency stop device.

In this conventional technology, a drive shaft that drives the emergency stop device and an operating mechanism that operates the drive shaft are provided on the car. The operating mechanism includes a movable iron core that is mechanically connected to the drive shaft and an electromagnet that attracts the movable iron core. The drive shaft is biased by a drive spring, but under normal circumstances, the electromagnet is energized and the movable iron core is attracted, so the movement of the drive shaft is restricted by the operating mechanism.

In the event of an emergency, the electromagnet is demagnetized, releasing the drive shaft, and the drive shaft is driven by the force of the drive spring. This activates the emergency stop device and brings the car to an emergency stop.

When returning the emergency stop device to its normal state, the electromagnet is moved closer to the movable iron core that moved in the emergency. When the electromagnet comes into contact with the movable iron core, electricity is passed through the electromagnet, and the movable iron core is attracted to the electromagnet. Furthermore, with the movable iron core attracted to the electromagnet, the electromagnet is driven to return the movable iron core and electromagnet to their normal standby positions.

International Publication No. 2020/110437

In the above conventional technology, the biasing force of the drive spring on the drive shaft may vary due to dimensional tolerances and assembly tolerances of the components, which may reduce the reliability of the operation of the drive mechanism that drives the emergency stop device. This may reduce the reliability of the operation of the emergency stop device.

The present invention provides an elevator system equipped with an emergency stop device that can improve operational reliability while still being electrically operated.

In order to solve the above problems, the elevator system according to the present invention comprises a car, an emergency stop device provided in the car, a drive mechanism provided in the car for driving the emergency stop device, and an electric actuator for operating the drive mechanism, the drive mechanism being driven by a spring, the drive mechanism comprising a fixed part to which one end of the spring is fixed, and a position adjuster for setting a fixed position of the fixed part in the car. The elevator system according to the present invention further comprises the following means. This means is that the drive mechanism has a drive shaft connected to the emergency stop device, the drive shaft is biased by a spring, the drive shaft is inserted through the spring, the drive shaft movably passes through a fixed part, the fixed part has a hole and is fixed to the car by a bolt passing through the hole, the hole is larger than the outer diameter of the bolt, the position adjuster has a bolt support part with two bolts, the fixed position of the fixed part is set by the tip of the bolt shaft, the drive shaft movably passes between the two bolts of the position adjuster, the fixed part abuts against the tips of the two bolts, and the inclination of the fixed part can be adjusted by making different the lengths of the bolt shafts of the two bolts in the position adjuster that protrude from the bolt support part toward the fixed part.

According to the present invention, the reliability of operation of the drive mechanism that drives the emergency stop device is improved, thereby improving the reliability of operation of the electrically operated emergency stop device. Problems, configurations and effects other than those described above will become apparent from the description of the embodiments below.

1 is a schematic configuration diagram of an elevator system according to an embodiment of the present invention; FIG. 2 is a front view showing a mechanism of the electric actuator in the embodiment (standby state). FIG. 2 is a front view showing a mechanism of the electric actuator in the embodiment (in an operating state). 2 is a top perspective view showing a detailed configuration of a position adjuster 60 in FIG. 1. 13A and 13B are partial front views of the drive mechanism, illustrating an example of adjusting the inclination of the fixed part by the position adjuster.

The elevator device according to one embodiment of the present invention will be described below by way of examples with reference to the drawings. Note that in each drawing, the same reference numbers indicate the same components or components with similar functions.

Figure 1 is a schematic diagram of an elevator system according to one embodiment of the present invention.

As shown in FIG. 1, the elevator system includes a car 1, a position sensor 3, an electric actuator 10, a drive mechanism (12-20), a lifting rod 21, and an emergency stop device 2.

The car 1 is suspended by a main rope (not shown) in a hoistway provided in a building, and is slidably engaged with a guide rail 4 via a guide device (not shown). When the main rope is frictionally driven by a drive device (hoist: not shown), the car 1 rises and falls in the hoistway.

The position sensor 3 is provided in the car 1 and detects the position of the car 1 in the elevator shaft, and constantly detects the ascent/descent speed of the car 1 from the detected position of the car 1. Therefore, the position sensor 3 can detect when the ascent/descent speed of the car exceeds a predetermined overspeed.

In this embodiment, the position sensor 3 is equipped with an image sensor, and detects the position and speed of the car 1 based on image information of the surface condition of the guide rail 4 acquired by the image sensor. For example, the position of the car 1 is detected by comparing image information of the surface condition of the guide rail 4, which is measured in advance and stored in a storage device, with the image information acquired by the image sensor.

The position sensor may be a rotary encoder that is installed in the car and rotates as the car moves.

In this embodiment, the electric actuator 10 is an electromagnetic actuator, and is disposed on the top of the car 1. The electromagnetic actuator has a movable piece or movable rod that is operated by, for example, a solenoid or an electromagnet. The electric actuator 10 operates when the position sensor 3 detects a predetermined overspeed state of the car 1. At this time, the lifting rod 21 is pulled up by the drive mechanism (12-20) that is mechanically connected to the operating lever 11. This causes the emergency stop device 2 to enter a braking state.

The drive mechanisms (12 to 20) will be described later.

The emergency stop devices 2 are arranged on the left and right sides of the car 1. Each emergency stop device 2 is equipped with a pair of brakes (not shown), which can move between a braking position and a non-braking position, and in the braking position they clamp the guide rail 4. Furthermore, when the brakes rise relatively due to the descent of the car 1, a braking force is generated by the frictional force acting between the brakes and the guide rail 4. As a result, the emergency stop devices 2 are activated when the car 1 falls into an overspeed state, and bring the car 1 to an emergency stop.

The elevator system of this embodiment is equipped with a so-called ropeless governor system that does not use a governor rope, and when the ascent/descent speed of the car 1 exceeds the rated speed and reaches a first overspeed (e.g., a speed not exceeding 1.3 times the rated speed), the power supply to the drive device (hoist) and the power supply to the control device that controls this drive device are cut off. Also, when the descent speed of the car 1 reaches a second overspeed (e.g., a speed not exceeding 1.4 times the rated speed), the electric actuator 10 provided in the car 1 is electrically driven, which activates the emergency stop device 2 and brings the car 1 to an emergency stop.

In this embodiment, the ropeless governor system is composed of the above-mentioned position sensor 3 and a safety control device that determines the overspeed state of the car 1 based on the output signal of the position sensor 3. This safety control device measures the speed of the car 1 based on the output signal of the position sensor 3, and when it determines that the measured speed has reached a first overspeed, it outputs a command signal to cut off the power supply to the drive device (hoist) and the power supply to the control device that controls this drive device. In addition, when the safety control device determines that the measured speed has reached a second overspeed, it outputs a command signal to operate the electric actuator 10.

As described above, when the pair of brakes provided on the emergency stop device 2 are pulled up by the lifting rod 21, the pair of brakes clamp the guide rail 4. The lifting rod 21 is driven by a drive mechanism (12 to 20) connected to the electric actuator 10.

The configuration of this drive mechanism is explained below.

The operating lever 11 and first operating piece 16 of the electric actuator 10 are connected to form a roughly T-shaped first link member. The operating lever 11 and first operating piece 16 form the head and foot of the T, respectively. The roughly T-shaped first link member is rotatably supported by the crosshead 50 (upper frame of the car frame), which is a structural member of the car 1, at the connection between the operating lever 11 and the first operating piece 16 via the first operating shaft 19. One end (left side in the figure) of a pair of lifting rods 21 is connected to the end of the operating piece 16, which forms the foot of the T, on the opposite side to the connection between the operating lever 11 and the operating piece 16.

The connecting piece 17 and the second operating piece 18 are connected to form a substantially T-shaped second link member. The connecting piece 17 and the second operating piece 18 form the head and foot of the T, respectively. The substantially T-shaped second link member is rotatably supported on the crosshead 50 via the second operating shaft 20 at the connection between the connecting piece 17 and the second operating piece 18. The other end (left side in the figure) of the pair of lifting rods 21 is connected to the end of the second operating piece 18, which forms the foot of the T, on the opposite side to the connection between the connecting piece 17 and the second operating piece 18.

The end of the operating lever 11 extending from inside to outside the housing 30 and the end of the connecting piece 17 that is closer to the top of the car 1 than the second operating shaft 20 are respectively connected to one end (left side in the figure) and the other end (right side in the figure) of the drive shaft 12 lying on the car 1.

The operating lever 11 extends to the outside of the housing 30 through an opening (not shown) on the top surface of the housing 30. The opening is covered by a cover member 31. This prevents dust and foreign objects from entering the inside of the housing 30 through the opening. A slit portion (not shown) is provided in the cover member 31 in the direction of movement of the operating lever 11, and the operating lever 11 slidably passes through this slit portion. Therefore, the operating lever 11 can move without being hindered by the cover member 31.

The drive shaft 12 movably passes through the fixed part 14, which is fixed to the crosshead. The drive shaft 12 also passes through the pressing member 15, which is fixed to the drive shaft 12. The pressing member 15 is located on the second link member (connecting piece 17, second operating piece 18) side of the fixed part 14. The drive spring 13, which is an elastic body, is located between the fixed part 14 and the pressing member 15, and the drive shaft 12 is movably inserted into the drive spring 13. In this embodiment, a coil spring is used as the drive spring 13.

In this embodiment, the fixed part 14 is fixed to the crosshead 50 by bolting. The bolt (not shown) passes through a long hole provided in the fixed part 14. This allows the fixed position of the fixed part 14 relative to the crosshead 50 to be adjusted. In addition, a position adjuster 60 that sets the fixed position of the fixed part 14 is fixed to the crosshead 50. The drive shaft 12 passes through the position adjuster 60 so as to be movable in the longitudinal direction of the drive shaft 12.

In this embodiment, one end of the drive spring 13 is fixed to the fixed portion 14. Therefore, one end of the drive spring 13 is fixed to the crosshead 50 via the fixed portion 14. Furthermore, the other end of the drive spring 13 is fixed to the pressing member 15. Therefore, the other end of the drive spring 13 is fixed to the drive shaft 12 via the pressing member 15. In this way, one end of the drive spring 13 is a fixed end, and the other end of the drive spring 13 is a free end that moves together with the pressing portion of the drive shaft 12.

The support of the members by the crosshead 50 and the fastening of the members to the crosshead may be directly to the crosshead 50 or via a support member fastened to the crosshead 50.

In this embodiment, when the fixed position of the fixed part 14 is adjusted by the position adjuster 60, the position of the fixed part 14 relative to the drive shaft 12 is adjusted. This makes it possible to adjust the direction and magnitude of the biasing force (elastic force) of the drive spring 13 that the drive shaft 12 receives at the pressing member 15. Therefore, when the electric actuator 10 is operated, the drive shaft 12 can be reliably driven by the drive spring 13.

When the electric actuator 10 is operated, that is, when the current to the electromagnet is cut off in this embodiment, the electromagnetic force that constrains the movement of the operating lever 11 against the biasing force of the drive spring 13 disappears, and the biasing force of the drive spring 13 applied to the pressing member 15 drives the drive shaft 12 along the longitudinal direction. As a result, the first link member (operating lever 11, first operating piece 16) rotates around the first operating shaft 19, and the second link member (connecting piece 17, second operating piece 18) rotates around the second operating shaft 20. As a result, one of the lifting rods 21 connected to the first operating piece 16 of the first link member is driven and pulled up, and the other lifting rod 21 connected to the second operating piece 18 of the second link member is driven and pulled up.

Figure 2 shows the mechanism stored in the housing 30 of the electric actuator 10 in this embodiment, and is a front view in the installed state of Figure 1. In Figure 2, the emergency stop device is in a non-braking state, and the electric actuator 10 is in a standby state. In other words, the elevator system is in a normal operating state.

As shown in FIG. 2, in the standby state, the movable member 34 connected to the operating lever 11 is attracted by electromagnetic force to the electromagnet 35, whose magnetic pole face faces the movable member 34 and whose coil is energized and excited. This restricts the movement of the operating lever 11 against the biasing force of the drive spring 13 (compression spring). Therefore, the electric actuator 10 restricts the movement of the drive mechanism against the biasing force of the drive spring 13.

The operating lever 11 is connected to the movable member 34 via a connection bracket 38, which is a connecting member that is rotatably attached to the movable member 34. One end of the operating lever 11 is fixed to the connection bracket 38.

In this embodiment, the movable member 34 is made of a magnetic material. As the magnetic material, a soft magnetic material such as low carbon steel or permalloy (iron-nickel alloy) is preferably used. Note that at least the part of the movable member 34 that is attracted to the electromagnet 35 needs to be made of a magnetic material.

The other mechanisms (36, 37, 40-42) in Figure 2 will be described later.

Figure 3 shows the mechanism stored in the housing 30 of the electric actuator 10 in this embodiment, and is a front view in the installed state of Figure 1. In Figure 3, the emergency stop device is in a braking state, and the electric actuator 10 is in an operating state. In other words, the elevator system is in a state where it has been stopped by the emergency stop device.

When the excitation of the electromagnet 35 is stopped by a command from a safety control device (not shown), the electromagnetic force acting on the movable member 34 disappears. This releases the constraint on the operating lever 11 caused by the movable member 34 being attracted to the electromagnet 35, and the drive shaft 12 is driven by the biasing force of the drive spring 13 in the direction from the fixed part 14 toward the pressing member 15, which is received by the pressing member 15 of the drive shaft 12.

When the drive shaft 12 is driven, the operating lever 11 and the first operating piece (first link member) connected to the drive shaft 12 rotate around the first operating shaft 19. This causes the lifting rod 21 connected to the first operating piece 16 to be pulled up.

When the operating lever 11 rotates as described above, the movable member 34 connected to the operating lever 11 moves in the rotation direction of the operating lever 11 from the position of the movable member 34 shown in FIG. 2 to the position of the movable member 34 shown in FIG. 3.

To return the electric actuator 10 to the standby state shown in FIG. 2, the movable member 34 is returned from the movement position (FIG. 3) to the standby position (FIG. 2) by the mechanism (36, 37, 40-42) not described in FIG. 2, as described below.

As shown in FIG. 3, the electric actuator 10 has a feed screw 36 located on the flat surface of the substrate 40 to drive the movable member 34. The feed screw is rotatably supported by a first feed screw support member 41 and a second feed screw support member 42 fixed on the flat surface of the substrate 40. The electromagnet 35 is fixed to a support plate 49 having a feed nut 39. The feed nut 39 is screwed with the feed screw 36. The feed screw 36 is rotated by a motor 37. The motor 37 is fixedly supported on the flat surface of the substrate 40 by a motor fixing bracket 55.

The substrate 40 is fixed onto the flat surface of the crosshead 50. Therefore, the members and parts that make up the electric actuator 10 are supported or fixed to the flat surface of the crosshead 50 via the substrate 40. The members and parts that make up the electric actuator 10 are supported or fixed to the crosshead 50 via the substrate 40. The members and parts that make up the electric actuator 10 may be supported or fixed directly to the crosshead 50 without using the substrate 40.

To return the electric actuator 10 to the standby state, first, while exciting the electromagnet 35, the motor 37 is driven to rotate the feed screw 36. The rotating feed screw and the feed nut 39 of the electromagnet 35 convert the rotation of the motor 37 into linear movement of the electromagnet 35 along the axial direction of the feed screw 36. As a result, the electromagnet 35 approaches the moving position of the movable member 34 shown in FIG. 3, and the movable member 34 is attracted to the electromagnet 35 by the electromagnetic force of the electromagnet 35. Once the movable member 34 is attracted to the electromagnet 35, the direction of rotation of the motor 37 is reversed while continuing to magnetize the electromagnet 35, and the feed screw 36 is reversed. As a result, the movable member 34 moves to the standby position together with the electromagnet 35.

Figure 4 is a top perspective view showing the detailed configuration of the position adjuster 60 in Figure 1 in the installed state as shown in Figure 1.

The fixed portion 14 has a bolt fastening portion 14a that is fixed to the crosshead 50 by a bolt 70 and a nut 71, and a spring abutment portion 14b against which the drive spring 13 abuts. In this embodiment, the bolt fastening portion 14a and the spring abutment portion 14b are integrally formed by an L-shaped member. The drive shaft 12 passes through a hole portion 14c in the spring abutment portion 14b. The diameter of the hole portion 14c is larger than the diameter of the drive shaft 12. Therefore, the drive shaft 12 passes through the hole portion 14c movably.

The position adjuster 60 has a bolt support portion 61 to which bolts 62, 65 are attached to set the fixed position of the fixed portion 14. The bolt support portion 61 faces the spring abutment portion 14b of the fixed portion 14 and is fixed to the crosshead 50. The bolt support portion 61 has a notch portion 61a located between the bolts 62, 65. The drive shaft 12 passes through the notch portion 61a. The width of the notch portion 61a is larger than the diameter of the drive shaft 12. Therefore, the drive shaft 12 passes through the notch portion 61a movably.

In the position adjuster 60, nuts 63 and 66 are fixed to both sides of the cutout 61a of the bolt support 61. The bolts 62 and 65 are screwed into the nuts 63 and 66, respectively. The bolt support 61 has holes through which the bolts 62 and 65 pass at the fixing positions of the bolts 62 and 65. Therefore, the bolt shaft 64 of the bolt 62 and the shaft portion of the bolt 65 (not shown in FIG. 4) each pass through the nut and the hole of the bolt support 61 and protrude from the bolt support 61 toward the spring abutment portion 14b of the fixing portion 14.

The fixed position of the fixed part 14 is set by the tip of the bolt shaft of the bolts 62, 65 abutting against the bolt support part 61. In addition, by turning the bolts 62, 65 and changing the length of the bolt shaft protruding from the bolt support part 61 toward the spring abutment part 14b, the position of the tip of the bolt shaft changes. This allows the setting of the fixed position of the fixed part 14 to be changed.

In this embodiment, the fixing portion 14 is fixed to the crosshead 50 by a bolt 70 and a nut 71 at the bolt fastening portion 14a. The bolt fastening portion 14a has an elongated hole 74 whose width in a direction perpendicular to the longitudinal direction is greater than the diameter of the bolt 70. The shaft portion 73 of the bolt 70 passes through the elongated hole 74 and a bolt hole 75 provided at the mounting position of the bolt 70 in the crosshead 50.

In this embodiment, the fixing part 14 has a pair of long holes ("74" in FIG. 4) located on both sides of the drive shaft 12, as shown in FIGS. 1 to 3. The longitudinal direction of each long hole is along the axial direction of the drive shaft 12. A bolt 70 (FIG. 4) passes through each of the pair of long holes. Therefore, the fixing part 14 is fixed to the crosshead 50 by two sets of bolts and nuts located on both sides of the drive shaft 12.

The mounting position of the bolt 70 in the crosshead 50 is set by the bolt hole 75. The fixing position of the fixing part 14 can be moved from the position of the bolt hole 75 within the range of the longitudinal direction and width direction of the long hole 74. Therefore, within such a range of fixable positions of the fixing part 14, the fixing position of the fixing part 14 can be set by the bolts 62, 65 of the position adjuster 60 described above. In addition, since the position of the bolt 70 in the long hole 74 can be moved within the range of the longitudinal direction and width direction of the long hole 74, the inclination of the fixing part 14 with respect to the axial direction of the drive shaft 12 can be changed. Therefore, by making the length of the bolt shaft of the bolts 62, 65 protruding from the bolt support part different, the inclination of the fixing part 14 can be changed and the fixing position can be set.

Figure 5 is a partial front view of the drive mechanism showing an example of adjusting the inclination of the fixed part 14 using the position adjuster.

In FIG. 5, the hole 14c in the fixed part 14 through which the drive shaft 12 passes, and the hole in the bolt support part 61 through which the bolts 62 and 65 pass are shown in solid lines, although they would normally be shown in hidden lines (dashed lines), for convenience of illustration. Also, the bolts and nuts that secure the fixed part 14 are not shown.

In FIG. 5, of the bolts 62 and 65 in the position adjuster, the bolt 65 is turned in the direction of loosening the screw, and the head tip moves from position A to position B in the figure. In the example of FIG. 5, before the bolt 65 moves (solid line), the bolt shafts 64 and 67 of the bolts 62 and 65 protruding from the bolt support part 61 toward the fixed part 14 have the same length, but after the bolt 65 moves, the bolt 65 becomes shorter by the movement distance. Therefore, at the fixed position of the fixed part 14 set by the position adjuster, the inclination of the fixed part 14 changes clockwise, i.e., to the right, as shown by the imaginary line (two-dot chain line) in FIG. 5.

In this example, even if the inclination of the fixing portion 14 changes, the movement of the bolt hole 75 relative to the long hole 74 is within the range of the width and length of the long hole 74. Therefore, the fixing portion 14 can be fixed by tightening the bolt at the fixing position set by the position adjuster.

Instead of the long hole 74, holes of various shapes having a size that allows the position of the fixing part 14 to be adjusted, such as a round hole with a diameter larger than the bolt diameter, may be used. In other words, the bolt hole of the fixing part 14 needs only to be larger than the outer diameter of the bolt and large enough to allow the position through which the bolt passes within the hole to be changed.

By adjusting the inclination of the fixed portion 14, the magnitude of the biasing force of the drive spring 13 on the pressing member 15 of the drive shaft 12 becomes commensurate with the elastic force of the drive spring 13, and the direction of the biasing force becomes the driving direction of the drive shaft 12, i.e., the longitudinal direction. This improves the reliability of the operation of the drive mechanism.

As described above, in this embodiment, the position adjuster 60 can adjust the fixed position of the fixed portion 14 to which one end of the drive spring 13 is fixed. This improves the reliability of the operation of the drive mechanism that drives the emergency stop device by the biasing force of the drive spring 13 when the electric actuator 10 is in operation. Therefore, the reliability of the operation of the emergency stop device is improved even when it is electrically operated.

In addition, according to this embodiment, the fixing part 14 is positioned by abutting against the tip of the bolt in the position adjuster 60. As a result, the fixing position of the fixing part 14 is variable due to the long hole 74, and the fixing part 14 is maintained in a fixed position even though it is pressed by the drive spring 13. Furthermore, since the fixing part is positioned at two points by the tips of the two bolt shafts 64, 67, the fixing part is reliably maintained in a fixed position. Note that the number of bolts is not limited to two, and may be multiple.

In addition, according to this embodiment, the reliability of the operation of the electric actuator 10 is improved not only when an overspeeding state of the elevator car is detected, but also during a power outage.

The present invention is not limited to the above-described embodiment, but includes various modifications. For example, the above-described embodiment has been described in detail to clearly explain the present invention, and is not necessarily limited to having all of the configurations described. In addition, it is possible to add, delete, or replace part of the configuration of the embodiment with other configurations.

For example, the electric actuator 10 may be provided on the upper part of the car 1, as well as on the lower part or side part. In this case, the drive mechanism of the electric actuator and the safety device is provided in the structural member of the car as appropriate.

1...car, 2...emergency stop device, 3...position sensor, 4...guide rail, 10...electric actuator, 11...operating lever, 12...drive shaft, 13...drive spring, 14...fixing portion, 14a...bolt fastening portion, 14b...spring abutment portion, 14c...hole portion, 15...pressure member, 16...actuating piece, 17...connecting piece, 18...actuating piece, 19...actuating shaft, 20...actuating shaft, 21...lifting rod, 30...housing, 31...cover member, 34...movable member, 35...electromagnet, 36...feed screw, 37...motor motor, 38...connection bracket, 39...feed nut, 40...base plate, 41...feed screw support member, 42...feed screw support member, 43...engagement pin, 49...support plate, 50...crosshead, 55...motor fixing bracket, 60...position adjuster, 61...bolt support portion, 61a...notch portion, 62...bolt, 63...nut, 64...bolt shaft, 65...bolt, 66 nut, 67...bolt shaft, 70...bolt, 71...nut, 73...shaft portion, 74...long hole, 75...bolt hole

Claims (5)

A car,
An emergency stop device provided in the car;
A drive mechanism provided in the car and configured to drive the safety device;
an electric actuator for actuating the drive mechanism;
In an elevator installation comprising:
The drive mechanism is driven by a spring,
The drive mechanism includes:
A fixing portion to which one end of the spring is fixed;
A position adjuster that sets a fixed position of the fixing portion in the car;
Equipped with
The drive mechanism includes a drive shaft connected to the safety device,
The drive shaft is biased by the spring,
The drive shaft is inserted through the spring,
The drive shaft movably passes through the fixed portion,
The fixing portion has a hole and is fixed to the car by a bolt passing through the hole,
The hole is larger than an outer diameter of the bolt,
the position adjuster has a bolt support portion provided with two bolts, and sets the fixing position of the fixing portion by tip portions of the shafts of the two bolts;
the drive shaft passes movably between the two bolts of the position adjuster,
The fixing portion abuts against the tips of the two bolts,
An elevator apparatus characterized in that the inclination of the fixed part can be adjusted by making different the lengths of the bolt shafts of the two bolts in the position adjuster that protrude from the bolt support part toward the fixed part . 2. The elevator system according to claim 1,
An elevator apparatus, characterized in that the fixed position of the fixed part is variable . 2. The elevator system according to claim 1,
11. An elevator apparatus, wherein the spring is a coil compression spring . 2. The elevator system according to claim 1,
The elevator system according to claim 1, wherein the electric actuator restrains the drive mechanism against the biasing force of the spring in a standby state, and releases the restraint of the drive mechanism when the emergency stop device operates . In the elevator system according to claim 4 ,
The electric actuator comprises:
An operating lever connected to the drive mechanism;
A movable member connected to the operating lever;
an electromagnet facing the movable member;
Equipped with
In the standby state, the movable member is attracted to the electromagnet, thereby restricting the movement of the operation lever,
An elevator system, characterized in that the electromagnet is demagnetized when the emergency stop device operates .

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