JP2017145115A - Elevator speed governor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator speed governor of which a rope can be easily removed.SOLUTION: An elevator speed governor comprises: a speed governor body on which a speed governor rope, which is moved in linkage with elevational operation of a car, is wound and which has a gripping mechanism which grips the speed governor rope when a travel speed of the speed governor rope exceeds a specified rope; and a base member which supports the speed governor body and which is provided with an open hole through which the speed governor rope penetrates in the elevational direction of the car. The base member has a rope passage of which is one end is communicated with the open hole, and the other end is opened to an outer marginal part of the base member and derives the speed governor rope from the outer marginal part.SELECTED DRAWING: Figure 3

Description

  Embodiments described herein relate generally to an elevator governor.

  Conventionally, an elevator is required by law to provide an emergency stop device as a safety device. As a structure for operating this emergency stop device, a governor (governor) is known. The governor sheave is wrapped around a governor rope that moves in conjunction with the lifting and lowering operation of the elevator car. The governor also includes a gripping mechanism that grips the governor rope when the descending speed of the car exceeds a prescribed value. When the governor rope is gripped by the gripping mechanism, a speed difference occurs between the cars, and the link that connects the governor rope and the car operates to operate the emergency rope provided on the car side. The stop device is operated to mechanically stop the car.

Japanese Patent Laying-Open No. 2015-48234

  By the way, since the governor is also a machine part, periodic maintenance and parts replacement are required. In this case, it may be necessary to remove the governor from the installation location. As described above, the speed governor has a structure that grips the speed governor rope during an emergency stop. Therefore, the speed governor rope has a structure that penetrates the speed governor main body, for example, at a gripping mechanism. . Therefore, when removing the governor, first, the tension acting on the governor rope is released (the weight is removed), and the connection between the governor rope and the car is released. Then, by removing the governor rope penetrating the governor (gripping mechanism) from the governor, the governor can be detached (moved). As described above, the operation of exchanging the governor is large and the work load is large. Therefore, it would be meaningful to provide a structure that can easily remove the governor rope from the governor.

  The elevator governor according to the embodiment includes a governor body and a base member. The governor body is wrapped around a governor rope that moves in conjunction with the lifting and lowering operation of the car. The governor body has a gripping mechanism that grips the governor rope when the speed of movement of the governor rope exceeds a predetermined value. The base member supports the governor body. Further, the base member is formed with a through hole through which the governor rope penetrates in the raising / lowering direction of the car. This base member has a rope passage in which one end communicates with the through hole and the other end opens at an outer edge portion of the base member to guide the governor rope from the outer edge portion.

Drawing 1 is a schematic diagram showing an example of an elevator provided with a governor of an embodiment. FIG. 2 is a perspective view illustrating an example of the speed governor according to the embodiment. FIG. 3 is a front view showing a state where one of the frame plates (support walls, side walls) of the governor shown in FIG. 2 is removed in order to explain the internal structure of the governor of the embodiment. Drawing 4 is a figure showing an example of the grasping mechanism of the governor of an embodiment, and is a perspective view showing a non-gripping state. Drawing 5 is a figure showing an example of the grasping mechanism of the governor of an embodiment, and is a perspective view showing the grasping state. FIG. 6 is a plan view illustrating an example of a rope passage formed in the base member of the governor of the embodiment. FIG. 7 is a diagram illustrating an example of an adjustment mechanism that enables adjustment of a fixed position with respect to a base member of a fixed side rope grip (first grip plate) of the speed governor according to the embodiment, and includes a partial cross-sectional view. It is a top view. FIG. 8 is a perspective view showing an example of a frame plate on which a fixed rope grip having the adjustment mechanism shown in FIG. 7 is installed. FIG. 9 is a perspective view showing a modification of the frame plate on which the fixed rope grip having the adjusting mechanism is installed. FIG. 10 is a perspective view illustrating a modification of the adjustment mechanism that enables adjustment of the fixed position of the speed governor according to the embodiment with respect to the base member of the fixed rope grip. Drawing 11 is a top view showing the modification of the rope passage formed in the base member of the governor of an embodiment.

  Below, the governor of the elevator concerning an embodiment is explained in detail based on a drawing. The constituent elements in this embodiment include those that can be easily replaced by those skilled in the art or that are substantially the same, and the present invention is not limited to the following embodiments.

  Drawing 1 is a schematic diagram of elevator 12 provided with governor 10 of an embodiment. In the elevator 12, the car 16 moves in a hoistway 14 that penetrates a building having a multi-storey structure in the vertical direction across the floor. The car 16 is suspended from the main rope 18 and moves up and down in the hoistway 14 while being guided by a guide rail 20 provided in the hoistway 14 by an operation of a hoisting machine (not shown).

  In a machine room 22 provided in, for example, an upper section of the hoistway 14, a hoisting machine (not shown) and a control device that controls the entire elevator 12 including the hoisting machine are arranged. The speed governor 10 is installed in the machine room 22. The governor 10 moves in conjunction with a mechanism for detecting that the descending speed of the car 16 has exceeded a predetermined value, and when the descending speed of the car 16 has exceeded a predetermined value. And a rope gripping mechanism (gripping mechanism) for gripping the governor rope 24 (running integrally).

  On the other hand, the car 16 is provided with an emergency stop device 26 for emergency stop of the car 16. For example, when the main rope 18 is broken or an abnormality occurs in the rotational speed of the hoisting machine, the emergency stop device 26 guides when the descending speed of the car 16 exceeds a predetermined value (rated speed). It is a device for gripping the rail 20 and mechanically stopping the car 16 in an emergency.

  The governor rope 24 is wound endlessly around a sheave 28 attached to the governor 10 and a pulley 30 disposed below the hoistway 14. A weight 32 is suspended from the pulley 30 to apply a predetermined tension to the governor rope 24. The governor rope 24 is connected to a safety link 36 for operating the safety device 26 via a rope connecting portion 34. That is, the governor rope 24 travels in the same direction and at the same speed as the car 16 moves up and down.

  In such an elevator 12, when the governor 10 detects the descending overspeed of the car 16, the rope gripping mechanism grips the governor rope 24 and stops or decelerates the traveling thereof. As a result, the safety link 36 activates the emergency stop device 26 and causes the car 16 to be emergency stopped.

  The details of the speed governor 10 and the gripping operation of the speed governor rope 24 will be described with reference to FIGS. 2 is a perspective view of the governor 10, FIG. 3 is a front view of the governor 10, FIG. 4 is a perspective view showing a non-gripping state of the gripping mechanism 38, and FIG. 5 is a perspective view showing a gripping state of the gripping mechanism 38. It is.

  As shown in FIGS. 2 and 3, the speed governor 10 includes a speed governor main body 40 and a base member 42 (base, support plate) that supports the speed governor main body 40. The base member 42 is provided with two plate-like frame plates 44a and 44b (support walls and side walls) in parallel and vertically with a predetermined interval. The pair of frame plates 44a and 44b support a rotating shaft 46 disposed so as to straddle the facing space formed by the frame plate 44a and the frame plate 44b. The rotating shaft 46 rotatably supports the sheave 28. The governor rope 24 is wound around the groove 48 of the sheave 28.

  The sheave 28 is provided with a rotating weight 50. The rotary weight 50 is configured to rotate in conjunction with the sheave 28 and spread by centrifugal force. The movement of the rotating weight 50 is adjusted by the speed adjustment spring 52. By adjusting the speed adjustment spring 52, the rotational speed of the sheave 28 when the rotary weight 50 opens can be set.

  The speed governor 10 is provided with a limit switch 54. When the limit switch 54 is opened until the speed governor rope 24 reaches a predetermined speed and the rotary weight 50 contacts the detection lever 56, the limit switch 54 is turned on. The signal is provided to the control device so that the main power supply of the elevator 12 is cut off.

  When the car 16 continues to descend despite the main power supply of the elevator 12 being cut off, and the rotational speed of the sheave 28 that rotates as the governor rope 24 travels further increases, the rotary weight 50 is caused by centrifugal force. Further, the gripping mechanism 38 starts gripping operation of the governor rope 24.

  The gripping mechanism 38 includes a fixed rope grip 58 (first grip plate) provided on the base member 42 and a movable rope provided at a position facing the fixed rope grip 58 across the governor rope 24. A grip 60 (second gripping plate). The fixed side rope grip 58 includes a fixed side rope grip shoe 58a that contacts the governor rope 24 and a fixed side holder 58b that supports the fixed side rope grip shoe 58a. The fixed side holder 58b is fixed to the base member 42 and the frame plates 44a and 44b. The movable rope grip 60 is composed of a movable rope grip shoe 60a that contacts the governor rope 24 and a movable holder 60b that supports the movable rope grip shoe 60a. The movable rope grip 60 is fixed to one end side of the movable shaft 62 (arm member). The other end of the movable shaft 62 passes through the rotary shaft 64 at a right angle to the axial direction of the rotary shaft 64 rotatably supported by the frame plates 44a and 44b, and is prevented from being detached by a lock nut 66. It is fixed. A gripping spring 70 (for example, a coil spring or a compression spring) is wound around the movable shaft 62 in a compressed state via spring receivers 68a and 68b. Therefore, the gripping spring 70 functions to apply a predetermined gripping force to the movable rope grip 60 by urging the movable rope grip 60 in the direction of pushing the movable rope grip 60 (a direction away from the rotation shaft 64) by its elastic force. . In the fixed side rope gripping shoe 58a and the movable side rope gripping shoe 60a, for example, a U groove is formed on the contact surface facing the speed governor rope 24 so that the speed governor rope 24 can be stably sandwiched. Is formed. Note that the fixed-side rope grip 58 may be formed by integrally forming the fixed-side rope grip shoe 58a and the fixed-side holder 58b. Similarly, a movable rope grip 60 may be formed by integrally molding the movable rope grip shoe 60a and the movable holder 60b.

  In the gripping mechanism 38 configured as described above, when the elevator 12 is in steady operation, that is, when the car 16 is operated (moved) within a predetermined speed, the movable rope grip 60 is adjusted as shown in FIG. It is maintained in a posture (non-locking posture) that is raised so as to be separated from the speed rope 24. In this case, the governor rope 24 moves in conjunction with the raising / lowering operation of the car 16 without contacting the fixed side rope gripping shoe 58a and the movable side rope gripping shoe 60a. The rope connecting portion 34 moves together with the governor rope 24 and the car 16 and does not operate the emergency stop device 26. 4 and 5, the fixed side holder 58b is not shown for easy understanding of the structure of the gripping portion.

  When the governor 10 detects an excessive descending speed of the car 16, the movable rope grip 60 falls in the direction of arrow A (downward) as shown in FIGS. 3 and 4, and the movable rope grip The shoe 60 a comes into contact with the governor rope 24.

  At this time, since the governor rope 24 is traveling in the direction of the arrow B, the movable rope gripping shoe 60a in contact with the governor rope 24 is further drawn downward (in the direction of the arrow A) by the friction force. As shown in FIG. 5, the governor rope 24 is finally gripped by the fixed rope gripping shoe 58a and the movable rope gripping shoe 60a. As a result, traveling of the governor rope 24 is stopped. On the other hand, since the car 16 continues to move, the safety link 36 moves. As a result, the emergency stop device 26 operates to stop the car 16 safely.

  Although the operation frequency of the gripping mechanism 38 of the speed governor 10 is low, the sheave 28 and the rotating shaft 46 perform a rotating operation in accordance with the raising / lowering operation of the car 16, so that the speed governor 10 is Regular maintenance is required. In that case, it may be necessary to remove the governor rope 24 from the installation position, or it may be necessary to replace it with a new governor 10. As shown in FIGS. 1 and 2, one of the governor ropes 24 penetrates the governor 10 (the gripping mechanism 38 and the base member 42). Therefore, conventionally, the speed governor rope 24 is disconnected from the safety link 36 with the weight 32 removed, and further the speed governor rope 24 is separated at the portion of the rope connecting portion 34, so that the speed governor 10 (base member 42) is separated. ), And the work was large.

  Therefore, the speed governor 10 according to the present embodiment has a structure in which the speed governor 10 can be removed and replaced without performing the work of extracting the speed governor rope 24. Specifically, as shown in FIG. 6, the base member 42 includes a through hole 72 for penetrating the governor rope 24. One end of the base member 42 communicates with the through hole 72. A rope passage 74 having the other end opened to the outer edge portion 42 a of the base member 42 is provided.

  The rope passage 74 is a notch (groove, recess) penetrating in the thickness direction of the base member 42, and maintains the insertion posture of the governor rope 24 inserted through the through hole 72, that is, the base The member 42 can be led out from the outer edge portion 42a without being extracted in the thickness direction. In the case of the example shown in FIG. 6, the rope passage 74 is substantially linear from the position where the through hole 72 is formed (the position where the fixed side rope gripping shoe 58a and the movable side rope gripping shoe 60a face each other) toward the nearest outer edge portion 42a. Is formed. The rope passage 74 may be formed by a track other than a straight line as long as the governor rope 24 can be guided to the outer edge portion 42a. For example, the rope passage 74 may include a curved track or a bent track so as to avoid other components. Moreover, the width | variety of the rope channel | path 74 should just be able to move the governor rope 24, and should just be larger than the diameter of the governor rope 24. FIG.

  In the case of the example shown in FIG. 6, the fixed side rope grip 58 (first grip plate) is detachably fixed to the base member 42 so as to cover at least a part of the rope passage 74. The fixed side rope grip 58 is fixed to the frame plates 44a and 44b by fastening members such as bolts 76, for example. The fixed side rope grip 58 may be fixed from the back side of the base member 42 (the back side of the paper surface of FIG. 6) with a bolt or the like to increase the fixing strength to the base member 42 or the frame plates 44a and 44b. In this way, during normal operation of the governor 10, the rope passage 74 is blocked from the normal track by closing the rope passage 74 with the fixed rope grip 58, for example, the governor rope 24 is connected to the sheave 28. Can be prevented from falling off.

  A procedure for removing the governor 10 including the rope passage 74 as described above will be described with reference to FIGS. When the speed governor 10 is removed, the weight 32 (see FIG. 1) is first removed and the speed governor rope 24 is additionally provided while the operation of the elevator 12 (movement of the car 16) is stopped. Remove tension. Subsequently, the bolt 76 is removed, and the fixed side rope grip 58 is removed from the base member 42. That is, the rope passage 74 is completely exposed (see FIG. 6). Next, the governor rope 24 is removed from the groove 48 of the sheave 28. As described above, since the weight 32 is removed, the governor rope 24 can easily pull up the governor rope 24 on the side not penetrating the governor 10. In the case of FIG. 1, the portion 24 a extending in the ascending / descending direction on the side far from the car 16 side of the governor rope 24 wound around the sheave 28 and the pulley 30 can be pulled up. In this case, the portion 24b extending in the ascending / descending direction on the side close to the car 16 side can be pulled up without being moved in the ascending / descending direction. As a result, it is not necessary to change the position of the rope connecting portion 34 with respect to the safety link 36 of the stopped car 16. Therefore, when pulling up the governor rope 24, it is not necessary to disconnect the rope connecting portion 34 and the safety link 36 or to separate the governor rope 24 at the rope connecting portion 34.

  The lifting amount of the governor rope 24 may be such that the governor rope 24 can be removed from the groove 48 of the sheave 28, for example, several tens of millimeters. In addition, if the raising amount of the governor rope 24 is increased, the operation of removing the governor 10 described later becomes easier. The lifting operation of the governor rope 24 can be performed by, for example, a winch provided in the machine room 22 or brought in during the removal operation of the governor 10. It is desirable to hold the governor rope 24 pulled up by a winch or a holding device such as a hook provided in the machine room 22.

  Finally, a fastening member (for example, a bolt or the like) that fixes the speed governor 10 to the floor surface or installation surface of the machine room 22 is removed. Then, while the speed governor 10 is moved from the installation position, the speed governor rope 24 that has penetrated the through hole 72 is moved toward the outer edge portion 42 a of the base member 42 via the rope passage 74. Since the governor rope 24 comes out of the outer edge portion 42a, the governor 10 can be removed from the installation position.

  When the governor 10 is returned, the work may be performed according to the reverse procedure of the removal. That is, while the governor rope 24 is moved from the rope passage 74 toward the through hole 72, the governor 10 is moved to a predetermined position in the machine room 22 and fixed by a fastening member such as a bolt. Subsequently, the governor rope 24 that has been lifted is lowered and wound around the groove 48 of the sheave 28. Then, the fixed side rope grip 58 is fixed to the frame plates 44 a and 44 b and the base member 42 with bolts 76. Finally, the weight 32 is attached to the pulley 30 and a predetermined tension is applied to the governor rope 24, and the return operation of the governor 10 is completed.

  As described above, the base member 42 of the speed governor 10 according to the present embodiment has one end communicating with the through hole 72 and the other end opened to the outer edge portion 42a of the base member 42, so that the speed governor rope 24 is connected to the outer edge portion 42a. A rope passage 74 which is led out from Therefore, after the weight 32 is removed and the speed governor rope 24 is pulled up, the speed governor rope 24 penetrates the base member 42 (the speed governor 10) simply by taking out the speed governor rope 24 from the rope passage 74. The governor 10 can be removed from the installation position. That is, the operation of releasing the connection between the rope connecting portion 34 and the safety link 36, disconnecting the speed governor rope 24 at the rope connecting portion 34, and pulling out the speed governor rope 24 from the through hole 72 as in the past. Can be omitted, and the whole work can be simplified. Similarly, the operation of returning the removed speed governor 10 to the original position or installing a new speed governor 10 can be simplified.

  By the way, when the descending speed of the car 16 exceeds a predetermined value, that is, when the moving speed of the governor rope 24 exceeds a predetermined position, the fixed side rope grip 58 and the movable side rope grip 60 are controlled. The machine rope 24 needs to be securely gripped. Therefore, as described above, the fixed-side rope gripping shoe 58a and the movable-side rope gripping shoe 60a are formed with U-grooves so that they can be stably accommodated in the U-grooves when gripping the governor rope 24. Gripping is realized. Therefore, the U-groove of the fixed rope gripping shoe 58a and the U-groove of the movable rope gripping shoe 60a need to be positioned so as to accurately face each other with the speed governor rope 24 sandwiched when the gripping is completed. That is, as described above, when the fixed side rope grip 58 is attached and detached to remove and attach the speed governor 10, after the fixed side rope grip 58 is attached, the fixed side rope grip shoe 58a becomes the movable side rope grip shoe 60a. It needs to be positioned accurately with respect to it. Therefore, in the case of the speed governor 10 according to the present embodiment, the fixed rope grip 58 adjusts the gripping position when the governor rope 24 is gripped by the fixed rope grip 58 and the movable rope grip 60. An adjustment mechanism is provided. In this adjusting mechanism, the fixed side rope grip 58 is fixed in the first direction M (see FIG. 2) which is the width W of the groove 48 of the sheave 28 around which the governor rope 24 is wound. 58 (fixed side rope gripping shoe 58a) is moved.

  FIG. 7 is a diagram illustrating an example of the adjustment mechanism 78. In this adjustment mechanism 78, the width P of the fixed side rope grip 58, that is, the width along the first direction M is such that a gap is formed in the first direction M in the base member 42 in order to support the fixed side rope grip 58. The distance between the pair of fixed frame plates 44a and 44b is smaller than the interval Q. That is, when the fixed side rope grip 58 is mounted in the space between the pair of frame plates 44a and 44b, the gap S1 can be formed on one side in the width direction of the fixed side rope grip 58, and the gap S2 can be formed on the other side. Become. By adjusting the gap S1 and the gap S2, the position of the fixed rope grip 58 can be adjusted in the first direction M, and the position of the fixed rope grip shoe 58a with respect to the movable rope grip shoe 60a can be adjusted.

  As shown in the partial cross-sectional view in FIG. 7, the adjustment mechanism 78 has female screw portions 80 (only the frame plate 44 a side is shown) at both ends in the width direction of the fixed-side rope grip 58. An adjustment shaft 84 having a male screw portion 82 engaged with the female screw portion 80 on one side in the axial direction can be screwed. The adjustment shaft 84 is, for example, a cylindrical shaft in which a male screw portion 88 into which a fixing nut 86 is screwed is formed on the opposite side to the male screw portion 82, and the outer surface side of the frame plate 44 a while being screwed to the fixed rope grip 58. The male threaded portion 88 has such a length that it projects. As shown in FIG. 8, the adjustment shaft 84 can be inserted into the frame plate 44 a in a state where the surface of the fixed side rope grip 58 attached with the adjustment shaft 84 that faces the base member 42 is in close contact with the base member 42. A shaft receiving hole 90 having a diameter slightly larger than the diameter of the adjustment shaft 84 is formed at the position. An adjustment mechanism 78 having the same configuration is also formed at the end in the width direction of the fixed side rope grip 58 on the frame plate 44b side.

  An adjustment procedure by the adjustment mechanism 78 having such a configuration will be described. First, the fixed-side rope grip 58 is temporarily placed between the pair of frame plates 44a and 44b so that the shaft receiving holes 90 of the frame plates 44a and 44b and the female thread portion 80 of the fixed-side rope grip 58 face each other. Subsequently, the adjustment shaft 84 is inserted into the shaft receiving hole 90 from the outer surface side of the frame plate 44a and the frame plate 44b, and the male screw portion 82 and the female screw portion 80 are screwed together. In this case, if a tool mounting portion (for example, a hexagon wrench mounting hole) is formed at the end of the male screw portion 88 of the adjustment shaft 84, the male screw portion 82 and the female screw portion 80 can be easily and firmly engaged. be able to. Subsequently, the fixing nut is fixed to the male screw portion 88 in a state of protruding from the outer surface of the frame plate 44a and the frame plate 44b while adjusting the position of the fixed rope grip 58 in the first direction M with respect to the frame plate 44a and the frame plate 44b. 86 is screwed together. When the position of the fixed rope gripping shoe 58a of the fixed rope grip 58 can be adjusted to a position facing the movable rope gripping shoe 60a accurately, the tightening position of the right and left fixing nuts 86 is determined, and the fixed rope grip 58 Position adjustment and fixing are completed.

  As described above, the fixed-side rope grip 58 of the governor 10 includes the adjusting mechanism 78, so that even when the fixed-side rope grip 58 is removed during the removal operation of the governor 10, the fixed-side rope grip 58 is remounted. The U-groove of the fixed-side rope gripping shoe 58a can be accurately faced to the U-groove of the movable-side rope gripping shoe 60a, and the gripping mechanism 38 can be easily returned to a state in which it functions well.

  FIG. 9 shows a modification of the frame plate 44a that supports the fixed-side rope grip 58 that can be adjusted in position in the first direction M (the width direction of the fixed-side rope grip 58). The frame plate 44b has a similar shape. The frame plate 44a has a mounting groove portion 92 opened in the upper surface 44c of the frame plate 44a instead of the circular shaft receiving hole 90 shown in FIG. The mounting groove 92 has, for example, a substantially “J” shape, and a straight groove 92a extending in a second direction N (moving direction of the governor rope 24) perpendicular to the first direction M from the upper surface 44c. A curved groove portion 92b that curves from the groove portion 92a toward the end surface 44d (an end surface in the urging direction by the movable rope grip 60) is provided. The adjustment shaft 84 that enters the linear groove portion 92a from the upper surface 44c and passes through the curved groove portion 92b comes into contact with the support surface 92c and stops. When the fixed rope grip 58 is pressed by the movable rope grip 60, that is, the fixed rope clamp 58 and the movable rope grip 60 grip the governor rope 24 to support the surface 92 c. This is a receiving surface for the urging force when the rope 24 is stopped. That is, the position of the support surface 92c of the mounting groove 92 is determined such that the bottom surface of the fixed rope grip 58 having the adjustment shaft 84 is in close contact with the base member 42 in the mounting posture.

  In the case of the speed governor 10 including the frame plate 44 a and the frame plate 44 b configured as described above, when the speed governor rope 24 is moved along the rope passage 74, the fixed-side rope grip 58 is fixed as a preparation. The nut 86 (see FIG. 7) may be loosened and the adjustment shaft 84 may remain attached to the fixed rope grip 58. Then, the adjustment shaft 84 fixed to the fixed side rope grip 58 can be pulled out (removed) from the upper surface 44c through the mounting groove 92 (curved groove 92b, linear groove 92a). Similarly, when the fixed side rope grip 58 is attached, the adjustment shaft 84 and the fixed nut 86 can be temporarily attached to the frame plate 44a and the frame plate 44b with the fixed side rope grip 58 being attached. Then, as described with reference to FIG. 7, if the fixing nut 86 is tightened while finely adjusting the mounting position of the fixed rope grip 58, the fixed fixing of the fixed rope grip 58 can be completed. As a result, the removal and attachment work of the governor 10 can be further simplified. Further, since the adjustment shaft 84 and the fixing nut 86 can be operated while being attached to the fixed side rope grip 58, the loss of parts during the operation is suppressed, which can contribute to improvement in workability.

  In this case, the adjustment shaft 84 may be a separate part and may be retrofitted to the fixed side rope grip 58 using the male thread portion 82 as shown in FIG. 7, or the adjustment shaft 84 may be integrated with the fixed side rope grip 58. It may be formed. The shape of the mounting groove 92 is an example, and may be other than the “J” shape shown in FIG. 9. For example, it is only necessary that the groove of the mounting groove 92 is opened in a direction different from the direction of the force received by the support surface 92c when the fixed-side rope grip 58 is gripping. For example, an L shape may be used, and a shape in which the direction of the groove is changed several times may be used. Further, after the adjustment shaft 84 is brought into contact with the support surface 92c, the mounting groove 92 may be covered with a cover member, or the sealing member may be packed into the linear groove 92a or the curved groove 92b. In this case, foreign matter and dust can be prevented from entering the mounting groove 92. As a result, it is possible to prevent the adjustment shaft 84 from being attached / detached and the adhesion between the adjustment shaft 84 and the support surface 92c from being hindered. Further, a spanner-hanging processing portion 84a (planar portion) may be formed on the adjustment shaft 84. Positioning of the fixed side rope grip 58 by suppressing the rotation and movement of the fixed side holder 58b and the adjusting shaft 84 when the bolt 76 is tightened by hooking and fixing the wrench on the spanner hooking portion 84a. Accuracy can be improved. In addition, the spanner hanging process part 84a may be provided in the adjustment shaft 84 shown in FIG. 7, and an effect can be acquired similarly.

  FIG. 10 shows a fixed-side rope grip 94 whose position can be adjusted as a modification of the fixed-side rope grip 58. The fixed side rope grip 94 includes a fixed side rope grip shoe 94a and a fixed side holder 94b. The fixed side rope gripping shoe 94a has a U-groove similar to the above-described fixed side rope gripping shoe 58a, and grips the governor rope 24 in cooperation with the movable side rope gripping shoe 60a. The width in the first direction M of the fixed side holder 94b has a width P substantially the same as the interval Q between the frame plate 44a and the frame plate 44b. Therefore, the fixed side holder 94b is fixed between the frame plates 44a and 44b by a fastening member such as a bolt 96. The fixed side rope grip 94 includes a long hole portion 98 through which a bolt 96 for fixing the fixed side rope grip shoe 94a is inserted. The long hole portion 98 extends in the first direction M. In the case of the fixed side holder 94b shown in FIG. 10, the two long hole portions 98 are formed, but the number of formation can be selected as appropriate. For example, when the fixed-side rope gripping shoe 94 a has a detent structure so as not to rotate with respect to the fixed-side holder 94 b in the mounted posture, the fixed-side rope gripping with one long hole 98, that is, one bolt 96. The shoe 94a may be fixed. Further, three or more long hole portions 98 may be provided. The fixed side rope gripping shoe 94a is formed with a female thread portion 94c into which a bolt 96 inserted through the long hole portion 98 is screwed.

  In the case of the fixed side rope grip 94, the attachment / detachment with respect to the frame plate 44a and the frame plate 44b is completed by only the tightening operation and the loosening operation of the bolt 96. Further, the fine adjustment of the positioning of the fixed side rope gripping shoe 94 a in the first direction M may be performed in the long hole portion 98 when the fixed side rope gripping shoe 94 a is fixed with the bolt 96. Thus, in the case of the fixed side rope grip 94, the fixing to the frame plate 44a and the frame plate 44b (the governor 10) and the fine adjustment of the fixing position can be realized only by tightening the bolt 96. As a result, the operation of removing and attaching the governor 10 becomes easier than that of the structure shown in FIGS. 7 and 9, which can contribute to improvement in workability. Further, the structure of the adjusting mechanism is simplified, which can contribute to the reduction in the number of parts and the processing cost.

  FIG. 11 is a view showing another example of forming the rope passage 74. In the case of the example shown in FIG. 11, the rope passage 74 extends in a direction that does not intersect with the fixed rope grip 58 (first grip plate) and the movable rope grip 60 (second grip plate). In the case of the example shown in FIG. 11, the rope passage 74 having one end communicating with the through-hole 72 extends between the fixed side rope gripping shoe 58a and the movable side rope gripping shoe 60a in the first direction M. The base member 42 opens to the outer edge portion 42b on the side to which the frame plate 44b is fixed. The frame plate 44b is separated into a rope grip support portion 44e and a rotary shaft support portion 44f at a position where the rope passage 74 reaches the outer edge portion 42b, and does not interfere with the governor rope 24 that moves the rope passage 74. ing.

  By forming the rope passage 74 in this way, when the speed governor rope 24 penetrating the speed governor 10 is removed from the through hole 72, the fixed side rope grip 58 is attached to the frame plate 44a and the frame plate 44b or the base member 42. No need to remove from the As a result, the operation for removing the speed governor 10 and the operation for attaching the speed governor 10 are easier than when the rope passage 74 is opened to the outer edge portion 42 a of the base member 42. Further, since the removal work of the fixed rope grip 58 is not necessary, the fixed position of the fixed rope grip 58 and the movable rope grip 60 are maintained at the original positions facing each other. The 58 fine adjustment work is also unnecessary, and the work can be further simplified.

  In the case of FIG. 11, the rope passage 74 has a linear shape and is directed to the outer edge portion 42b. However, the present invention is not limited to this, and if a route that does not interfere with the fixed rope grip 58 and the movable rope grip 60 is traced, A curved portion or a bent portion may be included. By including the curved portion and the bent portion, the opening of the rope passage 74 can be separated in the opposite direction from the position where the fixed side holder 58b is fixed. That is, the rope grip support portion 44e is formed larger to increase the contact area (fixed area) between the rope grip support portion 44e and the base member 42 and increase the fastening strength such as bolts. be able to.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  10 speed governor, 12 elevator, 16 passenger car, 24 speed governor rope, 28 sheave, 34 rope connecting part, 36 safety link, 38 gripping mechanism, 40 speed governor body, 42 base member, 42a, 42b outer edge part 44a, 44b Frame plate (support wall), 48 grooves, 58, 94 Fixed rope grip (first grip plate), 60 Movable rope grip (second grip plate), 72 Through hole, 74 Rope passage, 78 adjustment mechanism, S1, S2 gap, 98 oblong hole.

Claims (5)

A speed governor having a gripping mechanism for gripping the speed governor rope when a speed governor rope that moves in conjunction with the raising / lowering operation of the car is wound and the moving speed of the speed governor rope exceeds a predetermined value The machine body,
A base member formed with a through hole that supports the governor body and penetrates the governor rope in the up-and-down direction of the car;
With
The base member is an elevator governor having a rope passage having one end communicating with the through-hole and the other end opened to an outer edge portion of the base member to guide the governor rope from the outer edge portion. The gripping mechanism includes a first gripping plate provided on the base member, and a second gripping plate provided at a position facing the first gripping plate across the governor rope,
2. The elevator governor according to claim 1, wherein the first grip plate is detachably attached to the base member so as to cover at least a part of the rope passage.   The first gripping plate is used to adjust the gripping position when the governor rope is gripped by the first gripping plate and the second gripping plate. The elevator governor according to claim 2, further comprising an adjustment mechanism that moves the first rope in a first direction that is a width direction of the groove of the sheave around which the governor rope is wound. The width of the first grip plate in the first direction is the distance between a pair of support walls fixed to the base member with a gap in the first direction to support the first grip plate. Formed narrower,
The adjustment mechanism adjusts a gap between the support wall and an end surface of the first grip plate facing the support wall when the first grip plate is disposed between the pair of support walls. Item 4. The elevator governor according to Item 3. The gripping mechanism includes a first gripping plate provided on the base member, and a second gripping plate provided to face the first gripping plate with the governor rope interposed therebetween,
The elevator speed governor according to claim 1, wherein the rope passage extends in a direction not intersecting with the first gripping plate and the second gripping plate.

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