JP6540574B2 - Brake device - Google Patents

Description

  The present invention relates to a brake device used in an elevator.

  Patent Document 1 describes a brake device used in an elevator. In the brake device described in Patent Document 1, the brake lining is pressed against the brake wheel to prevent the drive sheave from rotating. When the brake lining is separated from the brake wheel, a current is supplied to the coil of the brake device to move the plunger.

Unexamined-Japanese-Patent No. 6-200961

  In elevator maintenance, the plunger of the brake system is pulled out and the plunger is cleaned. The brake system of the elevator may be installed in a narrow place, and depending on the installation place, it may be difficult to withdraw the plunger.

  Moreover, the brake device described in Patent Document 1 separates the two brake linings from the brake wheel by moving one plunger. On the other hand, there is a braking device provided with one plunger for one brake lining. For example, the brake system is provided with two sets of brake linings and a plunger.

  In recent years, in order to improve the performance of the brake device, construction work has been frequently carried out to modify the brake device having only one plunger into a brake device having two plungers. A brake system with two plungers is structurally higher in height compared to a brake system with only one plunger. If there is no space for pulling out the plunger between the brake device and the ceiling after modification of the brake device, the height of the machine supporting the brake device must be adjusted. The machine base may be large and partially embedded in a wall or ceiling. For this reason, a great deal of expense and labor were required for the repair work.

  The present invention has been made to solve the problems as described above. An object of the present invention is to provide a brake device which can easily pull out a plunger.

The brake device according to the present invention includes a rotating body that rotates in conjunction with a drive sheave of an elevator, an opposing member facing the rotating body, and an elastic body that generates a force for pressing the opposing member against the rotating body. And an electromagnetic plunger device for generating a force for separating the member from the rotating body. The electromagnetic plunger device includes a coil, a plunger whose position changes depending on the presence or absence of current flowing through the coil, and a cylinder which guides the movement of the plunger. The plunger includes a rod having one end projecting from the cylinder , a main body detachably provided at the other end of the rod, and a release portion provided at a portion of the rod projecting from the cylinder. . The main body portion is removable from the rod when the release operation is performed on the release portion.

A brake device according to the present invention includes a rotating body that rotates in conjunction with a drive sheave of an elevator, a first opposing member and a second opposing member facing the rotating body, and a first opposing member against the rotating body. A first elastic body that generates a force, a first electromagnetic plunger device that generates a force to separate the first opposing member from the rotating body, and a second that generates a force to press the second opposing member against the rotating body An elastic body, and a second electromagnetic plunger device that generates a force to separate the second opposing member from the rotating body. Each of the first electromagnetic plunger device and the second electromagnetic plunger device includes a coil, a plunger whose position changes depending on the presence or absence of an electric current flowing through the coil, and a cylinder which guides the movement of the plunger. The plunger includes a rod having one end projecting from the cylinder , a main body detachably provided at the other end of the rod, and a release portion provided at a portion of the rod projecting from the cylinder. . The main body portion is removable from the rod when the release operation is performed on the release portion.
The brake device according to the present invention includes a rotating body that rotates in conjunction with a drive sheave of an elevator, an opposing member facing the rotating body, and an elastic body that generates a force for pressing the opposing member against the rotating body. And an electromagnetic plunger device for generating a force for separating the member from the rotating body. The electromagnetic plunger device includes a coil, a plunger whose position changes depending on the presence or absence of current flowing through the coil, and a cylinder which guides the movement of the plunger. The plunger is provided on a rod having one end projecting from the cylinder, a main body detachably attached to the other end of the rod, and a portion of the rod projecting from the cylinder and projecting from the surface of the rod A first claw positionable at a first position and a second position not protruding from the first position, and a third position provided at the other end of the rod and not protruding from a surface of the rod When the second claw portion that can be arranged at four positions and the first claw portion is arranged at the first position, the second claw portion is arranged at the fourth position, and the first claw portion is arranged at the second position If it is, it is detachably provided on the actuating part that arranges the second claw part at the third position and the part of the rod that protrudes from the cylinder, and if it is attached to the rod, the first claw part is arranged at the second position And a cover.
A brake device according to the present invention includes a rotating body that rotates in conjunction with a drive sheave of an elevator, a first opposing member and a second opposing member facing the rotating body, and a first opposing member against the rotating body. A first elastic body that generates a force, a first electromagnetic plunger device that generates a force to separate the first opposing member from the rotating body, and a second that generates a force to press the second opposing member against the rotating body An elastic body, and a second electromagnetic plunger device that generates a force to separate the second opposing member from the rotating body. Each of the first electromagnetic plunger device and the second electromagnetic plunger device includes a coil, a plunger whose position changes depending on the presence or absence of an electric current flowing through the coil, and a cylinder which guides the movement of the plunger. The plunger is provided on a rod having one end projecting from the cylinder, a main body detachably attached to the other end of the rod, and a portion of the rod projecting from the cylinder and projecting from the surface of the rod A first claw positionable at a first position and a second position not protruding from the first position, and a third position provided at the other end of the rod and not protruding from a surface of the rod When the second claw portion that can be arranged at four positions and the first claw portion is arranged at the first position, the second claw portion is arranged at the fourth position, and the first claw portion is arranged at the second position If it is, it is detachably provided on the actuating part that arranges the second claw part at the third position and the part of the rod that protrudes from the cylinder, and if it is attached to the rod, the first claw part is arranged at the second position And a cover.

  With the brake device according to the present invention, the plunger can be easily pulled out.

It is a figure which shows the example of the elevator apparatus provided with the brake device in Embodiment 1 of this invention. It is a figure which shows the example of the brake device in Embodiment 1 of this invention. It is a figure which shows the cross section of an electromagnetic plunger apparatus. It is a figure which shows the example of a plunger. It is a figure for demonstrating the function of a cancellation | release part and a nail | claw part. It is a figure for demonstrating the function of a cancellation | release part and a nail | claw part. It is a perspective view which shows a main-body part. It is a figure for demonstrating the extraction operation | work of a plunger. It is a figure which compares a single brake device and a double brake device. It is a figure which shows the other example of a plunger. It is a figure which shows the other example of a plunger. It is a figure which shows the other example of a drawing-out assistance means. It is a figure which shows the other example of a drawing-out assistance means. It is a figure which shows the example of the plunger with which the brake device in Embodiment 2 of this invention was equipped. It is a figure which shows the example of the plunger with which the brake device in Embodiment 2 of this invention was equipped.

  The invention will be described with reference to the accompanying drawings. Duplicate descriptions will be simplified or omitted as appropriate. In each figure, the same numerals show the same portion or the corresponding portion.

Embodiment 1
FIG. 1 is a view showing an example of an elevator apparatus provided with a brake apparatus according to Embodiment 1 of the present invention. The elevator system shown in FIG. 1 comprises, for example, a car 1 and a counterweight 2. The car 1 moves up and down the hoistway 3. The counterweight 2 moves up and down the hoistway 3. The car 1 and the counterweight 2 are suspended by the main rope 4 in the hoistway 3. The method of roping for suspending the car 1 and the counterweight 2 is not limited to the example shown in FIG.

  For example, a machine base 6 is provided in the machine room 5. The machine room 5 is, for example, a space above the hoistway 3. The machine base 6 is provided with a hoisting machine base 8 via a vibration isolation device 7. The hoisting machine base 8 is provided with a hoisting machine 9, a gear device 10 and a brake device 11.

  The hoisting machine 9 includes, for example, a drive sheave 12 and an electric motor (not shown). The main rope 4 is wound around the drive sheave 12. The motor generates a driving force for rotating the drive sheave 12. Control of the motor, that is, rotation and stop of the drive sheave 12 is controlled by a controller (not shown). The control device is provided, for example, in the machine room 5. When the drive sheave 12 rotates, the main rope 4 moves in a direction according to the rotation direction of the drive sheave 12. The car 1 moves up or down depending on the direction in which the main rope 4 moves. The counterweight 2 moves in the direction opposite to the direction in which the car 1 moves.

  FIG. 1 shows an example in which the gear device 10 is a worm gear. The gear device 10 includes, for example, a worm wheel 13 and a worm 14. The worm wheel 13 is provided on a shaft provided with the drive sheave 12. The worm wheel 13 rotates and stops with the drive sheave 12. The worm 14 includes a gear that meshes with a gear formed on the worm wheel 13. The worm 14 rotates in conjunction with the rotation of the worm wheel 13. The worm 14 stops when the worm wheel 13 stops. In the example shown in the present embodiment, the worm 14 is the output shaft of the gear device 10. The output shaft of the gear device 10 may be another shaft interlocked with the worm 14.

  FIG. 1 shows an example in which the elevator apparatus includes a worm gear that converts the rotation of the drive sheave 12 into the rotation of the output shaft. The elevator installation may comprise other types of gearings 10.

  FIG. 2 is a view showing an example of the brake device 11 according to the first embodiment of the present invention. FIG. 2 shows a part of the brake device 11. Moreover, FIG. 2 is the figure which looked at the brake device 11 from A direction of FIG. The brake device 11 includes, for example, a brake wheel 15, brake linings 16 and 19, brake shoes 17 and 20, brake arms 18 and 21, springs 22 and 23, levers 24 and 25, and electromagnetic plunger devices 26 and 28.

  The brake wheel 15 is provided on the worm 14. The brake wheel 15 rotates and stops with the worm 14. That is, the brake wheel 15 rotates in conjunction with the rotation of the drive sheave 12. The brake wheel 15 stops when the drive sheave 12 stops. In the example shown in the present embodiment, the brake wheel 15 is a rotating body that rotates in conjunction with the drive sheave 12.

  The brake lining 16 faces the brake wheel 15. The brake lining 16 is pressed against the brake wheel 15 to prevent the drive sheave 12 from rotating. The brake lining 16 is provided on the brake shoe 17. The brake shoe 17 is provided on the brake arm 18. The lower end portion of the brake arm 18 is provided via a pin on a support member that supports the brake wheel 15 and the like. In the example shown in the present embodiment, the brake lining 16 is a first opposing member facing the rotating body. A brake pad etc. may be adopted as the first opposing member.

  The brake lining 19 faces the brake wheel 15. The brake lining 19 is pressed against the brake wheel 15 to prevent the drive sheave 12 from rotating. The brake lining 19 is disposed so as to sandwich the brake wheel 15 from both sides by the brake lining 16. The brake lining 19 is provided on the brake shoe 20. The brake shoe 20 is provided on the brake arm 21. The lower end portion of the brake arm 21 is provided to the support member via a pin. In the example shown in the present embodiment, the brake lining 19 is a second opposing member facing the rotating body. A brake pad etc. may be adopted as the second opposing member.

  The spring 22 generates a force for pressing the brake lining 16 against the brake wheel 15. That is, in the example shown in the present embodiment, the spring 22 is a first elastic body that generates a force for pressing the first opposing member against the rotating body. The type of the first elastic body is not limited to the spring. The spring 22 presses, for example, the upper portion of the brake arm 18 so that the brake arm 18 approaches the brake wheel 15. The brake shoe 17 is provided at an intermediate portion of the brake arm 18. For this reason, the brake lining 16 is pressed against the brake wheel 15 with a force larger than the force with which the spring 22 presses the brake arm 18 according to the principle of leverage.

  The spring 23 generates a force for pressing the brake lining 19 against the brake wheel 15. That is, in the example shown in the present embodiment, the spring 23 is a second elastic body that generates a force for pressing the second opposing member against the rotating body. The type of the second elastic body is not limited to the spring. The spring 23 presses the upper portion of the brake arm 21 so that the brake arm 21 approaches the brake wheel 15, for example. The brake shoe 20 is provided at an intermediate portion of the brake arm 21. Therefore, the brake lining 19 is pressed against the brake wheel 15 with a force larger than the force with which the spring 23 presses the brake arm 21 according to the principle of leverage.

  The lever 24 is provided on the support member via a pin. Similarly, the lever 25 is provided on the support member via a pin.

  The electromagnetic plunger device 26 generates a force for separating the brake lining 16 from the brake wheel 15. That is, in the example shown in the present embodiment, the electromagnetic plunger device 26 is a first electromagnetic plunger device that generates a force for separating the first opposing member from the rotating body. The electromagnetic plunger device 26 includes, for example, a plunger 27. The tip end of the plunger 27 contacts the lever 24. The electromagnetic plunger device 26 moves the lever 24 by displacing the plunger 27 and arranges the brake lining 16 so as not to be in contact with the brake wheel 15.

  The electromagnetic plunger device 28 generates a force for separating the brake lining 19 from the brake wheel 15. That is, in the example shown in the present embodiment, the electromagnetic plunger device 28 is a second electromagnetic plunger device that generates a force for separating the second opposing member from the rotating body. The electromagnetic plunger device 28 comprises, for example, a plunger 29. The tip end of the plunger 29 contacts the lever 25. The electromagnetic plunger device 28 moves the lever 25 by displacing the plunger 29 and arranges the brake lining 19 so as not to be in contact with the brake wheel 15.

  FIG. 3 is a view showing a cross section of the electromagnetic plunger device 26. As shown in FIG. The electromagnetic plunger device 26 includes, for example, a coil 30, a cylinder 31, a switch 32 and a case 33 in addition to the plunger 27.

  The position of the plunger 27 changes depending on the presence or absence of the current flowing through the coil 30. If no current flows in the coil 30, the plunger 27 is placed at the upper position through the lever 24 by the force of the spring 22. That is, if no current flows in the coil 30, the brake lining 16 is pressed against the brake wheel 15. When current flows through the coil 30, the plunger 27 disposed at the upper position moves downward and is disposed at the lower position. The movement of the plunger 27 is guided by the cylinder 31. The displacement of the plunger 27 moves the lever 24 so that the brake lining 16 separates from the brake wheel 15. If current flows in the coil 30, the brake lining 16 does not contact the brake wheel 15. Whether the plunger 27 is at the upper position or the lower position can be identified by a signal from the switch 32. The plunger 27, the coil 30, the cylinder 31 and the switch 32 are supported by the case 33. The switch 32 is not limited to the illustrated configuration, and may have any configuration as long as the displacement to the upper position or the lower position of the plunger 27 can be detected.

  The configuration of the electromagnetic plunger device 28 is similar to the configuration of the electromagnetic plunger device 26. That is, the cross section of the electromagnetic plunger device 28 is the same as the cross section shown in FIG. The electromagnetic plunger device 28 includes, for example, a coil 30, a cylinder 31, a switch 32 and a case 33 in addition to the plunger 29. A specific description of the configuration of the electromagnetic plunger device 28 is omitted.

  FIG. 4 is a view showing an example of the plunger 27. As shown in FIG. The plunger 27 includes, for example, a rod 34, a main body 35, a release part 36, a claw 37, an actuating part 38, a pressing plate 39 and a screw rod 40.

  The rod 34 is, for example, an elongated cylindrical shape. One end (tip) of the rod 34 protrudes from the cylinder 31. One end of the rod 34 contacts the lever 24. The main body portion 35 is a portion attracted by a magnetic field generated when the coil 30 is energized. The main body portion 35 has, for example, a cylindrical shape having a diameter larger than the diameter of the rod 34. The main body 35 is detachably provided at the other end of the rod 34.

  In order to make the main body 35 removable with respect to the rod 34, in the example shown in the present embodiment, the plunger 27 is provided with the release portion 36, the claw portion 37 and the actuating portion 38. The release portion 36 is provided at a portion of the rod 34 that protrudes from the cylinder 31. That is, the release portion 36 is not covered by the cylinder 31 or the case 33 when the brake device 11 is performing a normal operation. When the release operation is performed on the release portion 36 at the time of maintenance or the like, the main body portion 35 becomes removable from the rod 34.

  FIG.5 and FIG.6 is a figure for demonstrating the function of the cancellation | release part 36 and the nail | claw part 37. As shown in FIG. 5 and 6 show an example in which the release unit 36 is a button. When the release portion 36 is a button, the release operation for removing the main body portion 35 from the rod 34 is performed by pushing the release portion 36. FIG. 5 shows a state in which the release operation is not performed on the release unit 36. In the state shown in FIG. 5, the release portion 36 is disposed, for example, so that the surface is flush with the surface of the rod 34. When the release operation is performed on the release unit 36, the release unit 36 is pushed into the inside of the rod 34. In this state, the release portion 36 is disposed at a position not protruding from the surface of the rod 34. FIG. 6 shows a state in which a release operation has been performed on the release unit 36.

  The claws 37 are provided at the other end of the rod 34. As shown in FIG. 5, in a state where the release operation is not performed on the release portion 36, the claw portion 37 is disposed, for example, at a position projecting from the surface of the rod 34. The actuating portion 38 has a mechanism for interlocking the claw portion 37 with the release portion 36. For example, when the release portion 36 is pushed from the state shown in FIG. 5, the claw portion 37 moves so as to be drawn into the inside of the rod 34 by the function of the actuating portion 38. That is, when the release operation is performed on the release portion 36, the claw portion 37 is disposed at a position not protruding from the surface of the rod 34 as shown in FIG.

  FIG. 7 is a perspective view showing the main body portion 35. As shown in FIG. The body portion 35 is formed with a mounting hole 35a into which the other end of the rod 34 is inserted. Further, in the main body portion 35, a recessed portion 35b in which the claw portion 37 is disposed is formed on the inner wall forming the mounting hole 35a. When the other end of the rod 34 is inserted into the mounting hole 35a and the claw 37 is disposed in the recess 35b, the claw 37 is hooked on the edge forming the mounting hole 35a. Thus, the rod 34 is fixed to the main body 35. Further, when the release operation is performed on the release portion 36, the claw portion 37 is disposed at a position where it does not protrude from the surface of the rod 34. Thus, the rod 34 can be removed from the main body 35.

  The pressure plate 39 is fixed to the main body 35 by a bolt 41. By loosening the bolt 41, the presser plate 39 can be removed from the main body 35. The screw rod 40 has its tip end screwed into a screw hole formed in the main body 35 and is fixed using a nut 42. The screw rod 40 partially protrudes from the pressing plate 39.

  The configuration of the plunger 29 is similar to that of the plunger 27. That is, the plunger 29 is provided with, for example, a rod 34, a main body 35, a release part 36, a claw 37, an operating part 38, a pressing plate 39 and a screw rod 40 as shown in FIGS. In the plunger 29, one end (tip) of the rod 34 protruding from the cylinder 31 contacts the lever 25. The specific description of the other configuration of the plunger 29 is omitted.

  With the brake device 11 having such a configuration, the maintenance worker can easily pull out the plunger 27 when performing maintenance on the brake device 11. FIG. 8 is a view for explaining the pulling out operation of the plunger 27. As shown in FIG. The maintenance worker can remove the main body portion 35 from the rod 34 by performing a release operation on the release portion 36 when pulling out the plunger 27. Therefore, even when the ceiling of the machine room 5 or a beam or the like provided in the machine room 5 approaches the electromagnetic plunger device 26, the plunger 27 can be easily pulled out. Similarly, the plunger 29 can be easily pulled out.

  FIG. 9 is a diagram comparing a single brake device and a double brake device. FIG. 9 (a) shows a single brake system. A single brake device is a brake device provided with only one electromagnetic plunger device. In a single brake system, two brake linings are operated by one electromagnetic plunger system. FIG. 9 (b) shows a double brake system. The double brake device, like the brake device 11, is a brake device provided with two electromagnetic plunger devices. In a double brake system, one electromagnetic plunger device operates one brake lining and the other electromagnetic plunger device operates the other brake lining.

  In the double brake system, for example, raising the position of the lever secures a space for arranging the two electromagnetic plunger devices. Therefore, as shown in FIG. 9, the position of the electromagnetic plunger device of the double brake device is higher than the position of the electromagnetic plunger device of the single brake device. From the viewpoint of improving the performance of the brake device, when replacing an existing single brake device with a double brake device, it is effective to adopt the brake device 11 as a double brake device to be newly established.

  In addition, you may employ | adopt the electromagnetic plunger apparatus 26 provided with the plunger 27 in a single brake apparatus. By employing the electromagnetic plunger device 26, the plunger 27 can be easily pulled out. In addition, the single brake device can be installed in a place where the ceiling or the like is low.

  10 and 11 show another example of the plunger 27. FIG. 10 and 11 show cross sections of the plunger 27. FIG. The plunger 27 shown in FIG. 10 further includes a pull-up rod 43 and a spring 44 in addition to the configuration shown in FIG. In FIG. 10, a part of the configuration of the actuating portion 38 and the pressing plate 39 and the like is not shown.

  In the example shown in FIGS. 10 and 11, the rod 34 is formed with a hollow portion 34a that opens at the other end. The pull-up bar 43 and the spring 44 are disposed in the hollow portion 34 a. The pull-up rod 43 is disposed at a position closer to the opening of the hollow portion 34 a than the spring 44. The spring 44 presses the pull-up bar 43 against the open side of the hollow portion 34a.

  FIG. 11 shows the body 35 removed from the rod 34. When the main body 35 is removed from the rod 34, the pull-up bar 43 partially pops out of the rod 34 by the force of the spring 44.

  The maintenance worker performs a release operation on the release unit 36 when maintaining the brake device 11, and removes the main body unit 35 from the rod 34. At this time, the rod 34 from which the main body portion 35 is removed remains left inside the case 33. If the plunger 27 has the pull-up bar 43 and the spring 44, the maintenance worker can grasp the pull-up bar 43 protruding from the rod 34 and pull out the rod 34.

  The pull-up bar 43 and the spring 44 are an example of the withdrawal assisting means. The extraction assisting means is for facilitating the operation of extracting the rod 34 from which the main body 35 has been removed. The withdrawal assisting means is provided on the rod 34 so as to be exposed, for example, when the main body 35 is removed from the rod 34. 12 and 13 are diagrams showing another example of the extraction assisting means. In the example shown in FIG. 12, the hook 45 is provided at the other end of the rod 34. The maintenance worker can pull the rod 34 by hooking the hook 45 with a string or the like. In the example shown in FIG. 13, a magnet 46 is provided at the other end of the rod 34. The maintenance worker can pull out the rod 34 using a tool or the like whose tip is iron.

Second Embodiment
FIG.14 and FIG.15 is a figure which shows the example of the plunger with which the brake apparatus 11 in Embodiment 2 of this invention was equipped. 14 and 15 show a part of the plunger 27. FIG. The brake device 11 in the present embodiment is different from the example in which the plunger 27 and the plunger 29 are shown in the first embodiment. The configuration of the elevator apparatus which is not described in detail in the present embodiment is the same as the configuration disclosed in the first embodiment. Further, the configuration of the plunger 29 is the same as the configuration of the plunger 27. Therefore, in the present embodiment, the configuration of the plunger 27 will be described in detail, and the description of the configuration of the plunger 29 will be omitted.

  The plunger 27 in the present embodiment includes, for example, a rod 34, a main body 35, a first claw 47, a second claw 48, an operating portion 38, a pressing plate 39, a screw rod 40 and a cover 49. In FIG. 14 and FIG. 15, the structure of one part, such as a main-body part 35 and a pressing plate 39, is not shown in figure.

  The rod 34 in the present embodiment is, for example, an elongated cylindrical shape. One end (tip) of the rod 34 protrudes from the cylinder 31. The main body 35 is detachably provided at the other end of the rod 34.

  In order to make the main body 35 removable with respect to the rod 34, in the example shown in the present embodiment, the plunger 27 is provided with a first hook 47, a second hook 48, an operating part 38 and a cover 49. The first claw portion 47 is provided at a portion of the rod 34 which protrudes from the cylinder 31. The first claw portion 47 can be disposed at a first position protruding from the surface of the rod 34 and a second position not protruding from the first position. The first claw portion 47 may or may not slightly protrude from the surface of the rod 34 when disposed at the second position. The second claw portion 48 is provided at the other end of the rod 34. The second claw portion 48 can be disposed at a third position projecting from the surface of the rod 34 and a fourth position not projecting beyond the third position. The second claw portion 48 may or may not slightly protrude from the surface of the rod 34 when disposed at the fourth position.

  The actuating portion 38 has a mechanism for interlocking the second claw portion 48 with the first claw portion 47. When the first claw portion 47 is disposed at a first position where the first claw portion 47 protrudes from the surface of the rod 34, the actuating portion 38 arranges the second claw portion 48 at a fourth position. FIG. 14 shows a state in which the first claw portion 47 is disposed at the first position. When the first claw portion 47 is arranged at the second position, the actuating portion 38 arranges the second claw portion 48 at a third position which protrudes from the surface of the rod 34. FIG. 15 shows a state in which the second claw portion 48 is disposed at the third position. For example, the actuating portion 38 may have a mechanism for always pressing the first claw portion 47 or the second claw portion 48 such that the first claw portion 47 is disposed at the first position by a plate spring or the like.

  The body portion 35 is formed with a mounting hole 35a into which the other end of the rod 34 is inserted. Further, in the main body portion 35, a concave portion 35b in which the second claw portion 48 is disposed is formed on the inner wall forming the mounting hole 35a. When the other end of the rod 34 is inserted into the mounting hole 35a and the second hook 48 located at the third position is disposed in the recess 35b, the second hook 48 is hooked on the edge forming the mounting hole 35a. Thus, the rod 34 is fixed to the main body 35. When the second claw portion 48 is disposed at the fourth position, the rod 34 can be removed from the main body portion 35.

  The cover 49 is detachably provided to a portion of the rod 34 that protrudes from the cylinder 31. For example, the cover 49 is in the form of a cylinder closed at one end. The inner diameter of the cover 49 is slightly larger than the outer diameter of the rod 34. The cover 49 is attached to the rod 34 so as to cover one end of the rod 34 as shown in FIG. FIG. 15 shows an example in which a cover 49 placed on one end of the rod 34 is fixed to the rod 34 by means of bolts 50.

  When the cover 49 is attached to the rod 34, the first claws 47 are pushed by the cover 49 and placed in the second position. If the cover 49 is fixed to the rod 34 by the bolt 50, the cover 49 will not come off the rod 34 when the brake device 11 is in normal operation. That is, it is possible to prevent the main body 35 from coming off the rod 34 when the brake device 11 is performing a normal operation.

  The maintenance worker first removes the cover 49 when pulling out the plunger 27. When the cover 49 is removed from the rod 34, the first claw portion 47 pops up to the first position, and the second claw portion 48 is disposed at the fourth position. Thus, the main body 35 can be removed from the rod 34. The maintenance worker can easily pull out the plunger 27 when maintaining the brake device 11.

  1 basket, 2 balance weights, 3 hoistways, 4 main ropes, 5 machine rooms, 6 machine bases, 7 vibration isolators, 8 hoists, 9 hoists, 10 gear systems, 11 brakes, 12 drive ropes Car, 13 worm wheels, 14 worms, 15 brake wheels, 16 brake linings, 17 brake shoes, 18 brake arms, 19 brake linings, 20 brake shoes, 21 brake arms, 22 springs, 23 springs, 24 levers, 25 levers, 26 Electromagnetic plunger device, 27 plunger, 28 electromagnetic plunger device, 29 plunger, 30 coil, 31 cylinder, 32 switch, 33 case, 34 rod, 34a hollow part, 35 body part, 35a mounting hole, 35b Recesses, 36 release parts, 37 claws, 38 actuating parts, 39 pressers, 40 screw bars, 41 bolts, 42 nuts, 43 pull up bars, 44 springs, 45 hooks, 46 magnets, 47 first claws, 48 second Claws, 49 covers, 50 bolts

Claims (8)

A rotating body that rotates in conjunction with an elevator drive sheave;
An opposing member opposing the rotating body;
An elastic body that generates a force for pressing the facing member against the rotating body;
An electromagnetic plunger device for generating a force for separating the opposing member from the rotating body;
Equipped with
The electromagnetic plunger device
With the coil,
A plunger whose position changes depending on the presence or absence of current flowing through the coil;
A cylinder for guiding the movement of the plunger;
Equipped with
The plunger is
A rod whose one end projects from the cylinder;
A body portion detachably provided at the other end of the rod;
A release portion provided at a portion of the rod which protrudes from the cylinder;
Equipped with
The brake device , wherein the main body portion is removable from the rod when a release operation is performed on the release portion . A rotating body that rotates in conjunction with an elevator drive sheave;
A first opposing member and a second opposing member facing the rotating body;
A first elastic body that generates a force for pressing the first opposing member against the rotating body;
A first electromagnetic plunger device for generating a force for separating the first opposing member from the rotating body;
A second elastic body that generates a force for pressing the second opposing member against the rotating body;
A second electromagnetic plunger device that generates a force for separating the second opposing member from the rotating body;
Equipped with
The first electromagnetic plunger device and the second electromagnetic plunger device are respectively
With the coil,
A plunger whose position changes depending on the presence or absence of current flowing through the coil;
A cylinder for guiding the movement of the plunger;
Equipped with
The plunger is
A rod whose one end projects from the cylinder;
A body portion detachably provided at the other end of the rod;
A release portion provided at a portion of the rod which protrudes from the cylinder;
Equipped with
The brake device , wherein the main body portion is removable from the rod when a release operation is performed on the release portion . The brake device according to claim 1 or 2 , wherein the release portion is disposed at a position not protruding from the surface of the rod when a release operation is performed. The plunger is further provided with a claw provided at the other end of the rod and protruding from the surface of the rod;
The claw portion, the braking device according to any one of claims 1 to 3 is disposed at a position not protruding from the surface of the rod and a release operation on the release portion is performed. The brake device according to any one of claims 1 to 4 , wherein the plunger further comprises a withdrawal assisting means that is exposed when the main body is removed from the rod. A rotating body that rotates in conjunction with an elevator drive sheave;
An opposing member opposing the rotating body;
An elastic body that generates a force for pressing the facing member against the rotating body;
An electromagnetic plunger device for generating a force for separating the opposing member from the rotating body;
Equipped with
The electromagnetic plunger device
With the coil,
A plunger whose position changes depending on the presence or absence of current flowing through the coil;
A cylinder for guiding the movement of the plunger;
Equipped with
The plunger is
A rod whose one end projects from the cylinder;
A body portion detachably provided at the other end of the rod;
A first claw portion provided at a portion of the rod that protrudes from the cylinder, and that can be disposed at a first position that protrudes from the surface of the rod and a second position that does not protrude from the first position;
A third claw provided at the other end of the rod and locatable at a third position protruding from the surface of the rod and a fourth position not protruding from the third position;
When the first claw portion is disposed at the first position, the second claw portion is disposed at the fourth position, and when the first claw portion is disposed at the second position, the first claw portion is disposed at the second position. (2) an actuating portion for disposing the claws at the third position;
A cover which is detachably provided at a portion of the rod which protrudes from the cylinder and which is disposed on the rod to arrange the first claw portion at the second position;
Brake device with. A rotating body that rotates in conjunction with an elevator drive sheave;
A first opposing member and a second opposing member facing the rotating body;
A first elastic body that generates a force for pressing the first opposing member against the rotating body;
A first electromagnetic plunger device for generating a force for separating the first opposing member from the rotating body;
A second elastic body that generates a force for pressing the second opposing member against the rotating body;
A second electromagnetic plunger device that generates a force for separating the second opposing member from the rotating body;
Equipped with
The first electromagnetic plunger device and the second electromagnetic plunger device are respectively
With the coil,
A plunger whose position changes depending on the presence or absence of current flowing through the coil;
A cylinder for guiding the movement of the plunger;
Equipped with
The plunger is
A rod whose one end projects from the cylinder;
A body portion detachably provided at the other end of the rod;
A first claw portion provided at a portion of the rod that protrudes from the cylinder, and that can be disposed at a first position that protrudes from the surface of the rod and a second position that does not protrude from the first position;
A third claw provided at the other end of the rod and locatable at a third position protruding from the surface of the rod and a fourth position not protruding from the third position;
When the first claw portion is disposed at the first position, the second claw portion is disposed at the fourth position, and when the first claw portion is disposed at the second position, the first claw portion is disposed at the second position. (2) an actuating portion for disposing the claws at the third position;
A cover which is detachably provided at a portion of the rod which protrudes from the cylinder and which is disposed on the rod to arrange the first claw portion at the second position;
Brake device equipped with.   The brake device according to any one of claims 1 to 7, wherein the rotating body is provided on an output shaft of a worm gear.

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