JP4097730B2 - Lift car emergency stop device - Google Patents

Description

[0001]
[Technology to which the invention belongs]
The present invention relates to an emergency stop device provided in a lift car or a small cable car that is pulled up by a rope and is operated up and down on a railroad installed in a mountainous area, an inclined land or the like.
[0002]
[Prior art]
A rope pulling type transportation facility that uses a rope to transport a vehicle and is transported is called a lift car and is used as a transportation facility in a mountainous area or an inclined land. Vehicles of these rope pulling type transportation facilities are used by assembling a guest room on a traveling carriage having wheels. In addition, one end of the previous pulling rope is retained on the mountain top side of the traveling carriage. Further, the rope is wound around the sheave of the driving device arranged on the mountain upper side, and then folded back toward the stop on the mountain lower side. A counterweight is retained at the other end of the rope.
[0003]
Subsequently, rails are laid on the ground side for running the vehicle. The vehicle is reciprocated between the upper and lower stops on the upper surface of the rails laid by pulling the rope. At the same time, the counterweight retained at the other end of the rope is also guided in the rail to move relative to the vehicle, and the required tension is applied to the rope. .
[0004]
In this way, when the rope pulling the vehicle with a lift car that transports people and things breaks, the rope breakage is detected and an emergency stop device is installed on the vehicle side so that the vehicle does not run backward to the mountainside due to its own weight Then, the vehicle is braked and stopped by pressing and holding the rail.
[0005]
FIG. 9 shows the structure of an emergency stop device 100 used in a conventional elevator. An elevator car (not shown) has wedge-shaped wedges 102 and 102 that are symmetrical with respect to the left and right of the figure about a guide rail 106 that is laid vertically, and an inclined surface of the wedges 102 and 102. The guide blocks 101 and 101 having parallel inclined surfaces are slidably inserted into the guide cases 105 and 105 so as to face each other in the horizontal direction. Then, the springs 104 and 104 and the springs 104 and 104 are compressed and inserted between the guide blocks 101 and 101 and the guide cases 105 and 105, respectively. Further, the rollers 103 and 103 and the rollers 103 and 103 are inserted between the wedges 102 and 102 and the guide blocks 101 and 101 to cause rolling friction. Thus, when the main rope that suspends the car breaks and the car suddenly descends, the governor rope stops and the wedges 102 and 102 connected thereto roll the rollers 103 and 103 to the guide blocks 101 and 101. at the same time in contact from the right and left into the guide rails 106 when moved relative to the upper side Te.
[0006]
When the wedges 102, 102 come into contact with the guide rail 106, sliding friction generated between the wedges 102, 102 and the guide rail 106, and rollers 103, 103 and rollers between the wedges 102, 102 and the guide blocks 101, 101 are detected. The wedges 102 and 102 stop on the guide rail side due to the difference in the frictional force of the rolling friction generated through 103 and 103, and when the guide blocks 101 and 101 are lowered together with the car (not shown), the wedges 102 and 102 move left and right. It can also be expanded. At this time, the springs 104 and 104 and the springs 104 and 104 mounted between the guide blocks 101 and 101 and the guide cases 105 and 105 are compressed, and the repulsive force is applied to the rollers 103, 103,. By acting on the wedges 102, 102 via the..., A holding force, that is, a braking force is generated in the wedges 102, 102, and the car that descends is braked and stopped.
[0007]
[Problems to be solved by the invention]
An object of the present invention is to provide an emergency stop device for a lift car with high safety, which is provided with an emergency stop device used in an elevator having the above-described configuration and action, and which prevents sudden braking stop.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, an emergency stop device for a lift car vehicle that is pulled by a rope and moves up and down along an inclined rail,
A catch block 31 that is fixed to the vehicle using brackets 32 and 33, and that has a jaw-shaped clamping surface 31a in the vicinity of the lower edge;
A guide block 41 which is supported by the brackets 32 and 33 so as to be slidable in the vertical direction, and which has a rolling guide surface 41b at the bottom;
Springs 36 and 37 and an oil damper inserted between the catch block 31 and the guide block 41; a guide plate 42 fixed to the guide block 41;
A wedge-shaped wedge 49 in which a rolling guide surface 49a is formed on the upper edge guided and slid by the guide plate 42;
Rollers 45, 45,... Inserted between the rolling guide surface 49a of the wedge 49 and the rolling guide surface 41b of the guide block 41 so as to roll,
When the wedge 49 is inserted between the rolling guide surface 41b and the rail 4 through the rolling of the rollers 45, 45,... By the operation of the rope break detector for detecting the breaking of the rope, the springs 36, 37 The rail 4 is clamped by the braking surface 49b and the clamping surface 31a formed at the lower end of the wedge 49 by the restoring force to perform braking, and the oil damper performs gentle braking.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a side view illustrating the equipment of a lift car 1 which is one of the rope pulling type transportation equipment according to the present invention. Between the mountain upper side 5 and the mountain lower side 6, a rail 4 using a "C" type steel material is laid in a straight line on the ground surface. On the other hand, a passenger car 3a having a box shape for passengers is constructed on the upper surface of the traveling carriage 20 of the vehicle 3. Further, the traveling carriage 20 includes four traveling wheels 21, 21, 21, 21 that can rotate. In addition, as shown in the figure, one end of the two ropes 2, 2 is fastened to the traveling carriage 20 in the direction of the mountain top 5.
[0010]
Next, a driving device 8 is provided on the mountain top 5. The drive device 8 includes a drive sheave 9 for one car and induction sheaves 10 and 11 for two cars. The drive sheave 9 is pivotally mounted on a base 13 and is rotationally driven by an electric motor 12. The induction sheaves 10 and 11 are sheave frames. 14 are pivotally attached.
[0011]
As described above, the two ropes 2 and 2, one end of which is secured to the traveling carriage 20 of the vehicle 3, are extended toward the mountain top 5 and are guided to the drive sheave 9 by the induction sheave 10. The two ropes 2 and 2 guided to the drive sheave 9 are respectively wound around the drive sheave 9 by almost half a turn and turned to the mountain side 6, and further, the rope on the side that pulls the vehicle 3 by the guide sheave 11. 2 and 2 and the ropes 2 and 2 folded back on the hillside 6 are adjusted so as to be in a vertical parallel relationship. A balance weight 7 is retained at the ends of the ropes 2 and 2 that are folded back to the mountain side 6.
[0012]
Thus, when the drive device 8 is activated and the drive sheave 9 rotates, the vehicle 3 is pulled by the ropes 2 and 2, and the traveling wheels 21, 21, 21, 21 roll on the rail 4, and the mountain top in the direction of arrow 15. Round trip to 5 or 6 At the same time, the balance weight 7 retained on the other end side of the ropes 2 and 2 is guided in the rail 4 to form a relative positional relationship with the vehicle 3 and is balanced when the vehicle 3 is moving in the direction of the arrow 15. The weight 7 moves in the direction of the arrow 16. Conversely, when the vehicle 3 is moving in the direction of the arrow 16, the counterweight 7 moves in the direction of the arrow 15.
[0013]
FIG. 2 shows a side view of the traveling carriage 20 of the vehicle 3. The traveling carriage 20 is formed by stiffening a “C” -shaped steel member in a rectangular frame and incorporating an auxiliary beam in the middle. Axles 22 and 22 having traveling wheels 21, 21, 21 and 21 fitted to both ends are pivotally attached to the traveling carriage 20 before and after the traveling direction. For the traveling wheels 21, 21, 21, and 21, rubber pneumatic tires are used in terms of ride comfort and noise. Brackets 24, 24, 24, 24 extend downward and are fixed to the four corners of the traveling carriage 20, and guy rollers 23, 23, 23, 23 that pivot in the horizontal direction are pivotally attached to the lower surface.
[0014]
Next, traction ropes 2 and 2 are held on the mountain top 5 of the traveling carriage 20 via two thimble rods 25 and 25. A rope break detector 80 is provided in contact with the two ropes 2 and 2. Subsequently, the operation of the rope break detector 80 is transmitted by the link device 50 to the emergency stop devices 30, 30 mounted on both sides of the traveling carriage 20.
[0015]
Next, the detailed structure of the safety device 30 according to the present invention will be described with reference to FIGS. Base frames 26 and 26 using a 2 "C" shaped steel material are welded and fixed to the side surface of the traveling carriage 20 of the vehicle 3. Subsequently, “L” -shaped brackets 32, 33 are arranged facing the base frames 26, 26, and are fixed with bolts 34 , 34 and bolts 34 , 34 .
[0016]
Subsequently, the catch block 31 formed into a “concave” shape in a side view of FIG. 4 is fixed between the brackets 32 and 33 by using bolts 35 and 35 and bolts 35 and 35 on both sides. The lower end of the catch block 31 is formed with a clamping surface 31a that cooperates with the wedge 49 and abuts against the rail 4 to be gripped. An upper side portion 31b is also formed to protrude forward on the opposite side above the paper surface. A guide block 41 is inserted into the catch block 31 so as to be slidable in the vertical direction. Further, as shown in FIG. 4, a guide hole 32a and a guide hole 33a each having a long hole shape are formed in the side surfaces of the bracket 32 and the bracket 33, respectively. Two guide pins 41a, 41a and guide pins 41a, 41a are fixedly extended on both side surfaces of the guide block 41 in the vertical direction, and left and right brackets to which the catch block 31 is attached. The guide block 41 is slidably guided in the vertical direction by loosely inserting into the guide hole 32a formed in the bracket 32 and the guide hole 33a.
[0017]
Subsequently, springs 37 and 37 are inserted in parallel between the guide block 41 and the upper side 31 b of the catch block 31 using spring guides 36 and 36, and the upper side between the springs 37 and 37 is inserted. Both ends are pivotally attached to the clevis 39 provided on the portion 31b side and the clevis 39 provided on the guide block 41 side, and the shock absorber 40 is also inserted. A specific example of the shock absorber 40 is an oil damper.
[0018]
Next, an inclined rolling guide surface 41 b is formed at the lower end of the guide block 41. Next, a guide plate 42 is fixed to the guide block 41 with bolts 48, 48,. Then, as shown in FIG. 5, a wedge 49 formed in a wedge shape while being sandwiched between the catch block 31 and the guide plate 42 is guided and skewed. A rolling guide surface 49a inclined parallel to the rolling guide surface 41b of the guide block 41 is formed at the upper end of the wedge 49, and a braking surface 49b is formed at the lower end. Further, rollers 45, 45,... That are pivotally attached by pins 47 are inserted between the rolling guide surface 41b and the rolling guide surface 49a by a roller guide 46 so as to roll. ing. One end of the pin 47 pivotally attached to the roller 45 is loosely inserted into an elongated hole 42 a formed in the guide plate 42, so that the roller 45 does not come off from the rolling guide surface 49 a of the wedge 49. Next, the adjustment screws 43 and 44 are horizontally opposed to the side surfaces of the lower ends of the bracket 32 and the bracket 33, and the moving amount of the wedge 49 is defined so as to be in contact with both side surfaces of the wedge 49, respectively. It has become.
[0019]
6, 7, and 8 illustrate a state in which the emergency stop device 30 equipped on both sides of the traveling carriage 20 is operated by the link device 50 in the detection operation of the rope break detector. Two guide pins 54 and guide pins 55 are fixed to the T-shaped link frame 68 at a predetermined interval so as to be located in the front-rear direction of the traveling direction of the vehicle 3. On the other hand, the guide plate 53 has elongated holes 53a. 53b, 53c, and 53d are perforated, and the guide pin 54 is loosely inserted into the long hole 53a located in the front and back of the hole 53d, and the guide pin 55 is loosely inserted into the long hole 53d. It is possible to move in the direction of travel by the length.
[0020]
Next, the link frame 68 has a symmetrical symmetrical relationship with respect to the traveling direction with the guide plate 53 sandwiched in bottom view, the arm 56 is a hinge pin 60, and the arm 58 is pivoted horizontally by a hinge pin 61. It is pivotally possible. Further, a guide pin 57 and a guide pin 59 are provided at the end on the center line side of the traveling carriage 20 so as to be able to move by a small amount, and the left and right elongated holes 53b and 53c are perforated in the guide plate 53, respectively. Insert.
[0021]
Further, one end of a rod 64 and a rod 65 is pivotally connected to the end of the arm 56 and the arm 58 projecting to both sides of the traveling carriage 20 with the hinge pins 60 and 61 interposed therebetween. Note that springs 62 and 63 are tensioned and locked between the arms 56 and 58 and the link frame 68 located between the hinge pins 60 and 61 and the rods 64 and 65, respectively. As a result, the arms 56 and 58 are biased in the direction of turning in the directions of arrows 72 and 73 around the hinge pins 60 and 61. At the same time, the guide plate 53 is also urged in the direction of the arrow 70.
[0022]
FIG. 7 shows the state of the link device 50 when the strap 51 is removed from the rope break detector 80 after the operation. When the strap 51 is removed from the rope breakage detector 80, the guide plate 53 is guided by the guide pin 54 and the guide pin 55 by the action of the restoring force of the spring 66 and the spring 67 which are tensioned and locked, and moves in the direction of the arrow 70. . At the same time, the arm 58 connected by the guide plate 59 pivots in the direction of arrow 73 around the hinge pin 60. Then, one emergency stop device 30 is operated by pushing the rod 64 pivotally attached to the distal end portion of the arm 56 in the direction of the arrow 74, and at the same time, the rod pivotally attached to the distal end portion of the arm 58 on the opposite side. The other emergency stop device 30 is operated by pushing 65 in the direction of arrow 71.
[0023]
FIG. 8 shows a state where the emergency stop device 30 mounted on the side surface in the traveling direction of the traveling carriage 20 is acted on by one rod 64 of the link device 50 in the detection operation of the rope break detector 80 described above. . First, as shown in FIG. 7, when the arm 56 of the link device 50 is rotated in the direction of the arrow 73 around the hinge pin 60 by the restoring force of the tensioned spring 62, the rod 64 pivotally attached to the tip of the arm 56. 8 is pushed in the direction of the arrow 74, the tip of the rod 64 is fitted to the wedge 49 formed in the wedge shape of the safety device 30, as shown in FIG. Pressed.
[0024]
Thus, the wedge 49 is guided by the guide plate 42 and the catch block 31, and at the same time, a plurality of rollers 45, 45 inserted between the rolling guide surface 41b of the guide block 41 and the rolling guide surface 49b of the wedge 49. ,... Move in the direction of the arrow 77 of the vertical component and in the direction of the arrow 75 of the horizontal component.
[0025]
The braking surface 49b of the wedge 49 makes contact with the upper surface of the rail 4 on which the vehicle 3 travels. On the wedge 49, the upper rolling guide surface 49a becomes rolling friction due to the rollers 45, 45,..., And the lower side becomes sliding friction. Therefore, the wedge 49 gradually comes into close contact with the rail 4 that causes sliding friction due to the difference in the frictional force generated between them, and the guide block 41 that moves together with the vehicle 3 moves in the direction of the arrow 76 relative to the wedge 49. As the rollers 45, 45,... Roll on the inclined rolling guide surface 49a of the wedge 49 by moving, the guide block 41 is guided between the brackets 32 and 33 by the wedge effect, and above the arrow 78. Move to.
[0026]
As a result, the two springs 37, 37 inserted in parallel in the vertical direction between the upper side portion 31 b of the catch block 31 and the guide block 41 are gradually compressed. Therefore, a restoring force proportional to the compression amount of the two springs 37, 37 acts as a force for pressing the wedge 49 against the upper surface of the rail 4 through the guide block 41 and the rollers 45, 45,. The power gradually increases.
[0027]
Similarly, the arm 58 of the link device 50 is pivoted in the direction of the arrow 72 around the hinge pin 61 by the action of the restoring force of the tensioned spring 63, so that the rod 65 pivotally attached to the distal end is moved in the direction of the arrow 71. When pushed, the wedge 49 is moved and the emergency stop device 30 on the other side operates similarly.
[0028]
Further, when the pressing force of the wedges 49, 49 of the emergency stop devices 30, 30 on both sides against the rail 4 exceeds the weight of the vehicle 3, the vehicle 3 partially lifts upward, and as shown in FIG. The vehicle 3 is strongly braked and stopped by pinching the rail 4 in cooperation with the clamping surface 31a formed at the lower end of the catch block 31 and the braking surface 49b of the wedge 49. At that time, the shock of the shock absorber 40 mounted in parallel between the two springs 37 and 37 reduces the rapid movement of the guide block 41 so that the braking of the passenger who is riding on the vehicle 3 is reduced. It is intended to ensure safety.
【The invention's effect】
Conventional emergency stop devices are generally used in elevators. When a rope that suspends a car breaks, the safety device stops the descending car by grasping the guide rail of the car by the action of the governor. is there.
[0029]
On the other hand, in the present invention, the present invention is applied to a lift car that is towed by a rope on an inclined rail. The emergency stop device equipped on both sides of the vehicle is operated, the emergency stop device presses the rail, and the vehicle that is naturally separated by being separated from the rope by holding the rail is stopped. Furthermore, the emergency stop device is provided with a shock absorber in parallel with the spring for securing the rail holding force, so that the safety of passengers riding on the vehicle is improved by providing a gentle brake so that the safety of the present invention is improved. The effect is great.
[Brief description of the drawings]
FIG. 1 is a side view illustrating an overall configuration of a lift car according to the present invention.
FIG. 2 is a side view illustrating the configuration of a traveling carriage of a lift car.
FIG. 3 is a side view illustrating the safety device of the present invention.
4 shows a front view of the safety device of FIG. 4. FIG.
FIG. 5 is a front view, partly in section, illustrating the positional relationship between the safety device of the present invention and a rail.
FIG. 6 is a bottom view illustrating a state before the link device of the traveling carriage of the vehicle operates.
7 is a bottom view illustrating a state after the operation of the link device of the traveling carriage in FIG. 6; FIG.
8 is a side view illustrating a state after the operation of the safety device of FIG. 3; FIG.
FIG. 9 is a schematic diagram illustrating the structure of an emergency stop device used in a conventional elevator.
[Explanation of symbols]
1 Rope pulling type transportation equipment (lift car)
2,2 Rope
3 Vehicle 3a Passenger car 4 Rail 5 Mountain side (stop)
6 Yamashita side (stop)
7 Balance weight 8 Drive device 9 Drive sheave 10, 11 Induction sheave 12 Electric motor 13 Base 14 Sheave frame 15, 16 Arrow 20 Traveling carriage 21, 21, 21, 21 Traveling wheel 22, 22 Axle 23, 23, 23, 23 Guide roller 24, 24, 24, 24 Bracket 25, 25 Thimble rod 26 Base frame 30, 30 Emergency stop device 31 Catch block 31a Holding surface 31b Upper side 32 Bracket 32a Guide hole 33 Bracket 33a Guide holes 34, 34, ... Bolts 35, 35 , ... Bolts 36, 36 Spring guides 37, 37 Spring 38 Adjustment bolts 39, 39 Clevis 40 Shock absorber 41 Guide blocks 41a, 41a, ... Guide pins 41b Rolling guide surface 42 Guide plate 42a Slots 43, 44 Adjustment screws 45, 45,… roller 4 Roller guide 47 Pins 48, 48,... Bolt 49 Wedge 49a Rolling guide surface 49b Braking surface 50 Link device 50A Before operation 50B After operation 51 Strap 52 Bolt 53 Guide plates 53a, 53b, 53c, 53d Slots 54, 55 Guide pins 56 Arm 57 Hijin pin 58 Arm 59 Guide pin 60, 61 Hinge pin 62, 63 Spring 64, 65 Rod 66, 67 Screw rod 68 Link frame 70, 71, 72, 73, 74 Arrow 75, 76 Arrow 80 Rope break detector 90 Sheave Operating device 100 Emergency stop device 101, 101 Guide block 102, 102 Wedge 103, 103, ... Roller 104, 104, ... Guide case 106 Guide plate

Claims (1)

An emergency stop device for a lift car vehicle that is pulled by a rope and moves up and down along an inclined rail,
A catch block 31 that is fixed to the vehicle using brackets 32 and 33, and that has a jaw-shaped clamping surface 31a in the vicinity of the lower edge;
Slidably supported vertically by the bracket 32, a guide block 41 obtained by forming a rolling guide surface 41 b at a lower portion,
Springs 36 and 37 and an oil damper inserted between the catch block 31 and the guide block 41; a guide plate 42 fixed to the guide block 41;
A wedge-shaped wedge 49 rolling guide surface 49a to the upper edge is formed to slide by being guided by the guide plate 42,
Rollers 45, 45,... Inserted between the rolling guide surface 49 a of the wedge 49 and the rolling guide surface 41 b of the guide block 41 so as to roll,
When the wedge 49 is inserted between the rolling guide surface 41b and the rail 4 through the rolling of the rollers 45, 45,... By the operation of the rope break detector for detecting the breaking of the rope, the springs 36, 37 An emergency stop device for a lift car that performs braking by pressing the rail 4 by a braking surface 49b and a clamping surface 31a formed at the lower end of the wedge 49 by a restoring force, and also provides gentle braking by the oil damper.

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