Rope detachment prevention device and clearance adjustment method for rope detachment prevention device

Abstract

To provide a rope detachment prevention device and a clearance adjustment method for the rope detachment prevention device that are able to improve workability when a clearance between an adjusting member, which functions as a rope guard, and a rope is adjusted and the adjusting member is made parallel to the rope.SOLUTION: A rope detachment prevention device includes a fixing member 13, an adjusting member 14, and an adjusting bolt 15. A first inclined surface 24 is formed on the fixing member 13, and a second inclined surface 25 is formed on the adjusting member 14. The adjusting bolt 15 is provided to be movable in an axial direction D1 with respect to the fixing member 13; and when the adjusting bolt moves, the second inclined surface 25 slides and moves along the first inclined surface 24 while the second inclined surface 25 is in contact with the first inclined surface 24.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a rope slippage prevention device and a method for adjusting the gap of a rope slippage prevention device. [Background technology]

[0002] A conventional rope slippage prevention device includes a fixing member, a first adjustment member, a second adjustment member, a first adjustment bolt, a second adjustment bolt, and a rope guard.

[0003] The fixed member is provided facing the rope hung on the sheave and is fixed to the housing of the hoist. The first adjustment member is supported by the fixed member and is movable in the axial direction of the sheave relative to the fixed member. The first adjustment bolt is provided movably relative to the fixed member, and its movement causes the first adjustment member to move in the axial direction. The second adjustment member is supported by the fixed member and is provided axially separated from the first adjustment member and is movable in the axial direction relative to the fixed member. The second adjustment bolt is provided movably relative to the fixed member, and its movement causes the second adjustment member to move in the axial direction. The rope guard is provided between the rope and the fixed member and is supported by the fixed member via the first adjustment member and the second adjustment member. The rope guard is formed with a first inclined surface with which the first adjustment member contacts and a second inclined surface with which the second adjustment member contacts.

[0004] To adjust the gap between the rope guard and the rope and make the rope guard parallel to the rope, the worker moves the first adjustment bolt and the second adjustment bolt in the axial direction of the sheave, which causes the first inclined surface of the rope guard to move in the radial direction of the sheave via the first adjustment member, and the second inclined surface of the rope guard to move in the radial direction of the sheave via the second adjustment member (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 7195472 Summary of the Invention [Problem to be solved by the invention]

[0006] In conventional rope slippage prevention devices, either the first or second adjustment bolt is provided facing the hoist housing in the axial direction of the sheave. Therefore, when an operator moves the adjustment bolt in the axial direction of the sheave, there is a possibility that it may come into contact with the hoist housing, making it difficult to work.

[0007] Furthermore, in conventional rope slippage prevention devices, the worker must rotate both the first adjustment bolt and the second adjustment bolt, which makes the operation less efficient.

[0008] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a rope slippage prevention device and a gap adjustment method for a rope slippage prevention device that can improve workability when adjusting the gap between the rope and an adjustment member that functions as a rope guard and making the adjustment member parallel to the rope. [Means for solving the problem]

[0009] The rope slippage prevention device of the present disclosure comprises: a fixed member that is fixed to the housing of a hoisting machine and has a first inclined surface that is inclined in the axial direction of the sheave so that the radial thickness dimension of the sheave changes as the sheave approaches; an adjustment member that has a surface that faces the rope and has a second inclined surface that is an inclined surface that can come into contact with the first inclined surface and is capable of sliding and moving along the first inclined surface; an adjustment bolt that is arranged opposite the housing and is movable in the axial direction relative to the fixed member; and a fastening member that is interposed between the adjustment member and the adjustment bolt; when the second inclined surface is in contact with the first inclined surface, movement of the adjustment bolt causes the second inclined surface to slide and move along the first inclined surface via the fastening member.

[0010] The gap adjustment method for a rope slippage prevention device according to the present disclosure comprises a first step of moving the adjustment member by moving the adjustment bolt to bring the adjustment member into contact with the rope, and a second step of moving the adjustment member by moving the adjustment bolt from a state in which the adjustment member is in contact with the rope, thereby adjusting the gap. [Effects of the Invention]

[0011] According to the present disclosure, workability can be improved when adjusting the gap between the rope and an adjustment member that functions as a rope guard, and making the adjustment member parallel to the rope. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a cross-sectional view of an elevator hoisting machine according to a first embodiment. [Figure 2] 1 is a side view showing a rope slippage prevention device according to a first embodiment. [Figure 3] 1 is a cross-sectional view showing a rope slippage prevention device according to a first embodiment. [Figure 4] FIG. 2 is a diagram showing a fixed member and a housing according to the first embodiment integrated together. [Figure 5] 1 is a diagram showing an adjustment member, a fixing member, and a housing integrated together according to the first embodiment. FIG. [Figure 6] 4 is a flowchart showing a gap adjustment method for the rope slippage prevention device according to the first embodiment. [Figure 7] 10 is a diagram showing an adjustment member according to the first embodiment in contact with a rope. FIG. [Figure 8] FIG. 10 is a view after adjusting the gap between the adjustment member and the rope according to the first embodiment. [Figure 9] 10 is a side view showing a rope slippage prevention device according to a modified example of the first embodiment. FIG. [Figure 10] 10 is a side view showing a rope slippage prevention device according to a modified example of the first embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] Embodiment 1 Fig. 1 is a cross-sectional view of an elevator hoist 1 according to embodiment 1. Here, the longitudinal direction of the shaft 5 in Fig. 1, which is a direction along the axis of the sheave 3, is defined as an axial direction D1 of the sheave 3. Also, the lateral direction of the shaft 5 in Fig. 1, which is a direction along a line perpendicular to the axis passing through the axial direction D1 of the sheave 3, is defined as a radial direction D2 of the sheave 3.

[0014] In Figure 1, the hoisting machine 1 comprises a sheave 3 for winding ropes 2 arranged in an axial direction D1, a motor 4 for generating a driving force for rotating the sheave 3, a housing 11 for accommodating the motor 4, a shaft 5 for transmitting the driving force generated by the motor 4 to the sheave 3, a pair of bearings 6 for rotatably supporting the shaft 5, a pair of bearing stands 7 for supporting the pair of bearings 6, and a base member 8 for supporting the sheave 3, the housing 11, and the bearing stand 7.

[0015] The motor 4 includes a stator 9 and a rotor 10. The stator 9 is fixed to a housing 11. The rotor 10 is fixed by press-fitting the end of the shaft 5 on the rotor 10 side in the axial direction D1, with a gap between the stator 9 and the rotor 10. When the stator 9 is energized, the motor 4 rotates the rotor 10 and transmits driving force to the shaft 5.

[0016] The housing 11 is formed integrally with one of the bearings 6 provided between the motor 4 and the sheave 3 in the axial direction D1, and a bearing base 7 that supports one of the bearings 6. The housing 11 also has two female threaded holes 17 on a surface where the housing 11 and the sheave 3 face each other in the axial direction D1. Here, these two female threaded holes 17 are referred to as the one female threaded hole 17 and the other female threaded hole 17, respectively. One female threaded hole 17 corresponds to and is fastened with an adjustment bolt 15, and the rope slippage prevention device 12 is fixed. The other female threaded hole 17 corresponds to and is fastened with a fixing bolt 16, and the rope slippage prevention device 12 is fixed. Details of the rope slippage prevention device 12, including the adjustment bolt 15 and the fixing bolt 16, will be described later.

[0017] FIG. 2 is a side view showing the rope slippage prevention device 12 according to the first embodiment. FIG. 3 is a cross-sectional view showing the rope slippage prevention device 12 according to the first embodiment. FIG. 3(a) is a view of the AA section of FIG. 2 as seen from the sheave 3 side in the axial direction D1, FIG. 3(b) is a view of the BB section of FIG. 2 as seen from the sheave 3 side in the axial direction D1, and FIG. 3(c) is a view of the CC section of FIG. 2 as seen from the sheave 3 side in the axial direction D1. Here, the direction along a line perpendicular to the line passing through the radial direction D2 in a plane when the housing 11 is viewed from the sheave 3 in the axial direction D1 is defined as the depth direction D3. In addition, in the depth direction D3, the side of the fixed member inclined portion 20 is defined as the front side with the fixed member base 19 as the center, and the fixed member mounting portion 21 is defined as the back side.

[0018] The rope slippage prevention device 12 is arranged opposite the rope 2 hung on the sheave 3 and comprises a fixed member 13 fixed to the housing 11, an adjustment member 14 that is movable relative to the fixed member 13, an adjustment bolt 15 that is movable in the axial direction D1 relative to the fixed member 13 and moves the adjustment member 14 by moving it, a fixing bolt 16 for fixing the fixed member 13 to the housing 11, a spring 18 which is an elastic member arranged between the fixed member 13 and the adjustment member 14, and a washer 27 which is a fastening member interposed between the adjustment member 14 and the adjustment bolt 15.

[0019] The fixing member 13 includes a fixing member base 19, a fixing member inclined portion 20, and a fixing member mounting portion 21. As shown in Fig. 3(c), the fixing member inclined portion 20 and the fixing member mounting portion 21 are respectively joined to two surfaces of the fixing member base 19 in the depth direction D3. In other words, the fixing member inclined portion 20 and the fixing member mounting portion 21 each extend in a direction away from the fixing member base 19 in the depth direction D3, with the fixing member base 19 as the center.

[0020] 2, the fixed member base 19 is fixed to the housing 11 and extends in the axial direction D1 in a direction away from the housing 11. Furthermore, as shown in Fig. 3, the cross section of the fixed member base 19 is, for example, T-shaped.

[0021] 2, the fixing member base 19 is provided with a protrusion 100. The protrusion 100 is provided on the contact surface 26, which is the surface that comes into contact with the adjustment member 14 in the depth direction D3. For example, two protrusions 100 are provided.

[0022] 2, the fixing member inclined portion 20 extends from the housing 11 in a direction away from the housing 11 in the axial direction D1. It also has a first adjustment bolt insertion hole 200 into which the adjustment bolt 15 can be inserted in the axial direction D1. The first adjustment bolt insertion hole 200 is hollow, allowing the adjustment bolt 15 to move in the axial direction D1.

[0023] In addition, in the axial direction D1, the surface facing the surface fixed to the housing 11 is inclined so that the thickness dimension in the radial direction D2 decreases as it approaches the sheave 3. This inclined surface will be referred to as a first inclined surface 24 hereinafter.

[0024] As shown in Figure 3, the fixing member attachment portion 21 extends from the housing 11 in a direction away from the housing 11 in the axial direction D1. Also, as shown in Figures 3(b) and 3(c), it has a fixing bolt insertion hole 201 in the axial direction D1 into which the fixing bolt 16 can be inserted. The fixing bolt insertion hole 201 is hollow, and allows the fixing bolt 16 to move in the axial direction D1.

[0025] The adjustment member 14 includes a rope guard portion 22 and an adjustment member inclined portion 23. As shown in Fig. 3(b), the rope guard portion 22 and the adjustment member inclined portion 23 are joined in the depth direction D3. Also, as shown in Figs. 3(a) and 3(b), the adjustment member 14 is provided on the front side in the depth direction D3.

[0026] 2, rope guard part 22 has a surface facing rope 2. Furthermore, rope guard part 22 is provided between rope 2 and fixed member base part 19 via spring 18, and is movable relative to fixed member 13.

[0027] As shown in FIG. 2, the rope guard portion 22 has elongated holes 101 penetrating two surfaces in the depth direction D3. One elongated hole 101 engages with one protrusion 100 provided on the fixing member base 19. The elongated holes 101 are provided so that the rope 2 of the rope guard portion 22 is inclined with respect to the surface facing the rope 2. The number and positions of the elongated holes 101 are determined so as to correspond to the protrusions 100. For example, when two protrusions 100 are provided, two elongated holes 101 are provided, and each elongated hole 101 is positioned so that one protrusion 100 can be inserted into each of the elongated holes 101.

[0028] As shown in FIG. 2, the adjustment member inclined portion 23 has a second adjustment bolt insertion hole 202 into which the adjustment bolt 15 can be inserted in the axial direction D1. The second adjustment bolt insertion hole 202 is hollow, allowing the adjustment bolt 15 to move in the axial direction D1. The length of the second adjustment bolt insertion hole 202 in the radial direction D2 is larger than the diameter of the adjustment bolt 15. This is so that the adjustment member 14 can move in the radial direction D2 with the adjustment bolt 15 inserted in the second adjustment bolt insertion hole 202. For example, when an adjustment bolt 15 with a diameter of 24 mm is used, a second adjustment bolt insertion hole 202 with a length of 36 mm in the radial direction D2 is used.

[0029] 2, the surface where the adjusting member inclined portion 23 and the housing 11 face each other in the axial direction D1 is inclined so that the thickness dimension in the radial direction D2 increases as the surface approaches the sheave 3. This inclined surface is hereinafter referred to as the second inclined surface 25. The inclination angle of the second inclined surface 25 is determined so that the second inclined surface 25 can come into contact with the first inclined surface 24. The second inclined surface 25 can slide and move along the first inclined surface 24.

[0030] The inclination angle of the elongated hole 101 relative to the surface where the adjustment member 14 and the rope 2 face is set to be the same as the inclination angle of the second inclined surface 25 relative to the surface where the rope guard part 22 and the rope 2 face. This allows the elongated hole 101 to slide and move with the protrusion 100 engaged therein when the adjustment member 14 slides in the radial direction D2. Here, when the elongated hole 101 slides and moves, the protrusion 100 does not move, so the position of the protrusion 100 within the elongated hole 101 changes.

[0031] The adjustment bolt 15 and the fixing bolt 16 are bolts with external threads. As shown in FIG. 3( a), the heads of the adjustment bolt 15 and the fixing bolt 16, which are the ends on the side where the external threads are not cut, are, for example, hexagonal in shape. An operator can hold these heads and move the adjustment bolt 15 and the fixing bolt 16. The external thread of the adjustment bolt 15 can be tightened at any position in the axial direction D1 of one female threaded hole 17. The external thread of the fixing bolt 16 can be tightened at any position in the axial direction D1 of the other female threaded hole 17.

[0032] Furthermore, adjustment bolt 15 fixes fixed member 13 and adjustment member 14 to housing 11. Furthermore, when adjustment bolt 15 is moved in axial direction D1 with second inclined surface 25 in contact with first inclined surface 24, second inclined surface 25 slides and moves along first inclined surface 24.

[0033] The spring 18 is arranged to expand and contract in the radial direction D2 when the adjustment member 14 moves in the radial direction D2.

[0034] When the adjustment bolt 15 moves while the second inclined surface 25 is in contact with the first inclined surface 24, the washer 27 is pressed by the head of the adjustment bolt 15, causing the second inclined surface 25 to slide and move along the first inclined surface 24, thereby moving the adjustment member 14.

[0035] Next, a method for attaching the rope slippage prevention device 12 to the housing 11 will be described. Fig. 4 is a diagram showing the fixing member 13 and the housing 11 according to the first embodiment integrated together. Fig. 5 is a diagram showing the adjusting member 14, the fixing member 13 and the housing 11 according to the first embodiment integrated together. Note that Fig. 4 is a side view of the rope slippage prevention device 12 as seen from the back side in the depth direction D3, and Fig. 5 is a side view of the rope slippage prevention device 12 as seen from the front side in the depth direction D3.

[0036] First, the fixing bolt 16 is tightened. Specifically, the opposing surfaces of the fixing member mounting portion 21 and the housing 11 are brought into contact with the opposing surfaces of the housing 11 and the sheave 3. In this state, the fixing bolt 16 is inserted in the axial direction D1 from the sheave 3 side toward the housing 11 side, sequentially into the fixing bolt insertion hole 201 of the fixing member mounting portion 21 and the other female threaded hole 17 of the housing 11. Then, when the fixing bolt 16 is moved in the axial direction D1 from the sheave 3 side toward the housing 11 side, the male thread of the fixing bolt 16 engages with the female threaded hole 17 of the housing 11. Tightening the fixing bolt 16 in this manner allows the fixing member 13 and the housing 11 to be integrated, as shown in FIG. 4 .

[0037] The worker supports the fixing member 13 with one hand and holds the fixing bolt 16 with the other hand, and inserts, moves and tightens the fixing bolt 16.

[0038] Next, the adjustment member 14 is brought into contact with the fixed member 13. Specifically, as shown in FIG. 4, with the fixed member 13 and the housing 11 integrated by the fixing bolts 16, the inclined surface of the adjustment member inclined portion 23 is brought into contact with the inclined surface of the fixed member inclined portion 20. At this time, one protrusion 100 provided on the fixed member base 19 is engaged with each of the elongated holes 101 provided in the rope guard portion 22.

[0039] Next, a method for adjusting the gap between the rope slippage prevention device 12 will be described. Fig. 6 is a flowchart showing the method for adjusting the gap between the rope slippage prevention device 12. The method for adjusting the gap between the rope slippage prevention device 12 is a method for adjusting the gap S between the adjustment member 14 and the rope 2 in order to make the adjustment member 14 parallel to the rope 2. Fig. 7 is a diagram showing the adjustment member 14 according to the first embodiment in contact with the rope 2. Fig. 8 is a diagram showing the state after the gap S between the adjustment member 14 according to the first embodiment and the rope 2 has been adjusted. Note that Figs. 7 and 8 are side views of the rope slippage prevention device 12 as seen from the front side in the depth direction D3.

[0040] First, the adjustment bolt 15 is tightened. Specifically, with the adjustment member 14 in contact with the fixed member 13, the adjustment bolt 15 is inserted in the axial direction D1 from the sheave 3 side toward the housing 11 side through the second adjustment bolt insertion hole 202 of the adjustment member inclined portion 23, the first adjustment bolt insertion hole 200 of the fixed member inclined portion 20, and one of the female threaded holes 17 of the housing 11, in that order. Then, when the adjustment bolt 15 is moved in the axial direction D1 from the sheave 3 side toward the housing 11 side, the male thread of the adjustment bolt 15 engages with one of the female threaded holes 17 of the housing 11. By tightening the adjustment bolt 15 in this manner, the adjustment member 14, the fixed member 13, and the housing 11 can be integrated as shown in FIG. 5. Next, in the state shown in FIG. 5, the adjustment bolt 15 is moved in the axial direction D1 from the housing 11 toward the sheave 3, and tightened with one of the female threaded holes 17. As the adjustment bolt 15 moves, gaps are created between the adjustment member 14 and the washer 27, and between the washer 27 and the adjustment bolt 15. Then, due to the weight of the adjustment member 14, the inclined surface of the adjustment member inclined portion 23 slides and moves along the inclined surface of the fixing member inclined portion 20, the spring 18 stretches in the radial direction D2, and the adjustment member 14 moves in the radial direction D2 in a direction approaching the sheave 3. As a result, as shown in FIG. 7, the adjustment member 14 comes into contact with the rope 2. Specifically, the surface of the adjustment member 14 where the rope guard portion 22 and the rope 2 face each other comes into contact with the rope 2 (S1).

[0041] Next, the adjustment bolt 15 is moved in the axial direction D1 from the sheave 3 toward the housing 11. As a result, the adjustment bolt 15 is tightened at a position close to the rope prevention device 12 in the D1 direction of the female threaded hole 17. Then, as the adjustment bolt 15 moves, the adjustment member 14 and the washer 27, and the washer 27 and the adjustment bolt 15, come into contact with each other. Then, as the adjustment bolt 15 moves, the adjustment member inclined portion 23 is pushed toward the housing 11 in the D1 direction via the washer 27. Then, the adjustment member inclined portion 23 slides and moves along the inclined surface of the fixed member inclined portion 20, the spring 18 compresses in the radial direction D2, and the adjustment member 14 moves in the radial direction D2 away from the sheave 3. As a result, a gap S is created between the adjustment member 14 and the rope 2. Specifically, a gap S (S2) is created between the rope 2 and the surface of the adjustment member 14 where the rope guard portion 22 and the rope 2 face each other.

[0042] Thereafter, the adjustment bolt 15 is moved in the axial direction D1 from the sheave 3 toward the housing 11 until the gap S between the adjustment member 14 and the rope 2 becomes the predetermined dimension L of the gap S. As a result, as shown in Fig. 7, the gap S is adjusted to the dimension L (S3).

[0043] Here, the position of the protrusion 100 provided on the fixed member base 19 in the radial direction D2 within the elongated hole 101 provided in the rope guard part 22 during the process of adjusting the gap between the rope slippage prevention device 12 will be described. During the process of adjusting the gap between the rope slippage prevention device 12, the position of the protrusion 100 in the radial direction D2 within the elongated hole 101 is arranged so as to be close to the sheave 3 in the radial direction D2. Specifically, in S1, the position of the protrusion 100 in the radial direction D2 within the elongated hole 101 is arranged at a position farthest from the sheave 3 in the radial direction D2. In S2, the position of the protrusion 100 in the radial direction D2 within the elongated hole 101 is arranged at a position closer to the sheave 3 in the radial direction D2 compared to S1. In S3, the position of the protrusion 100 in the radial direction D2 within the elongated hole 101 is arranged at a position closest to the sheave 3 in the radial direction D2.

[0044] When the position of the protrusion 100 in the radial direction D2 within the elongated hole 101 is located at the position closest to the sheave 3 in the radial direction D2, the elongated hole 101 cannot move in the radial direction D2 toward the sheave 3. That is, the adjustment member 14 cannot move in the radial direction D2 away from the sheave 3. In this case, the worker cannot move the adjustment bolt 15 in the axial direction D1 from the sheave 3 toward the housing 11. Therefore, when the adjustment bolt 15 can no longer move in the axial direction D1 from the sheave 3 toward the housing 11, the worker can adjust the gap S to the dimension L without having to measure and adjust the dimension L of the gap S.

[0045] The operator moves the adjustment bolt 15 in the axial direction D1 with one hand.

[0046] Here, the head of the adjustment bolt 15 does not face, in the axial direction D1, any member or device of the hoisting machine 1. Therefore, the worker can easily move the head of the adjustment bolt 15 in the axial direction D1 without being aware of contact with the hoisting machine 1, improving workability.

[0047] Furthermore, when the worker moves the adjustment bolt 15 in the axial direction D1, the adjustment member 14 moves in the radial direction D2 due to the movement of the adjustment bolt 15, so the worker does not need to support the adjustment member 14 with the other hand that is not holding the adjustment bolt 15, and can adjust the gap between the rope slippage prevention device 12 using only one hand. This improves workability.

[0048] As described above, the rope slippage prevention device according to the first embodiment comprises a fixed member 13 that is fixed to the housing 11 of the hoist 1 and is inclined in the axial direction D1 of the sheave 3 so that the thickness dimension in the radial direction D2 of the sheave 3 changes as the distance to the sheave 3 increases, and that has a first inclined surface 24 that faces the surface fixed to the housing 11; an adjustment member 14 that has a surface that faces the rope 2 and that has a second inclined surface 25 that is inclined and can come into contact with the first inclined surface 24, and that can slide and move along the first inclined surface 24; and an adjustment member 14 that is provided opposite the housing 11 and is formed with the fixed member 13. The adjustment member 14 includes an adjustment bolt 15 that is movable in the axial direction D1 relative to the rope guard portion 22, and a washer 27 that is a fastening member interposed between the adjustment member 14 and the adjustment bolt 15. When the second inclined surface 25 is in contact with the first inclined surface 24, the adjustment bolt 15 moves, causing the second inclined surface 25 to slide and move along the first inclined surface 24 via the washer 27 that is a fastening member, thereby adjusting the gap S between the adjustment member 14 including the rope guard portion 22 and the rope 2, and improving workability when making the adjustment member 14 parallel to the rope 2.

[0049] In addition, the rope slippage prevention device of embodiment 1 is equipped with a spring 18, which is an elastic member provided between the fixed member 13 and the adjustment member 14, thereby preventing the adjustment member 14 from separating from the fixed member 13 when adjusting the gap between the rope 2 and the adjustment member 14.

[0050] In addition, in the rope slippage prevention device of embodiment 1, the fixed member 13 has a contact surface 26 that comes into contact with the adjustment member 14 when the second inclined surface 25 slides and moves along the first inclined surface 24, and a protrusion 100 is provided on the contact surface 26, and the adjustment member 14 has an elongated hole 101 that engages with the protrusion 100, and the inclination angle of the elongated hole 101 with respect to the surface where the adjustment member 14 and the rope 2 face each other is the same as the inclination angle of the second inclined surface 25 with respect to the surface where the adjustment member 14 and the rope 2 face each other, so that when adjusting the gap between the rope 2 and the adjustment member 14, the adjustment member 14 can be prevented from moving away from the contact surface 26 of the fixed member 13.

[0051] Furthermore, the rope slippage prevention device of embodiment 1 is configured so that when the position of the protrusion 100 in the radial direction D2 within the elongated hole 101 is positioned at the position closest to the sheave 3 in the radial direction D2, the gap between the adjustment member 14 and the rope 2 becomes a predetermined dimension L. This allows the worker to adjust the gap S to dimension L when the adjustment bolt 15 can no longer move in the axial direction D1 from the sheave 3 toward the housing 11 without having to measure and adjust the dimension L of the gap S, thereby improving workability.

[0052] In the process of adjusting the gap between the rope slippage prevention device 12, the position of the protrusion 100 provided on the fixed member base 19 in the radial direction D2 within the elongated hole 101 provided in the rope guard part 22 is not limited. If it is necessary to adjust the gap S while measuring it, for example, when the worker moves the adjustment bolt 15 in the axial direction D1 from the sheave 3 toward the housing 11, the worker may adjust the gap S by holding a ruler in the hand that is not holding the adjustment bolt 15 and measuring the dimension of the gap S.

[0053] FIG. 9 is a side view showing a rope slippage prevention device 12 according to a modification of the first embodiment. As shown in FIG. 9, in this modification, a fixing member scale 30, which is a line segment extending along the axial direction D1, is provided on the side surface of the fixing member inclined portion 20 on the near side in the depth direction D3, and an adjustment member scale 31, which is a line segment extending along the axial direction D1, is provided on the side surface of the adjusting member inclined portion 23 on the near side in the depth direction D3. The fixing member scale 30 and the adjustment member scale 31 are arranged so that their positions in the radial direction D2 coincide when the gap S is equal to a predetermined dimension L. With this configuration, even when adjustment is required while measuring the gap S, the worker can rotate the adjustment bolt 15 and adjust the gap S visually without using a ruler, improving workability.

[0054] The inclination shapes of the inclined surfaces of the fixed-member inclined portion 20 and the adjustable-member inclined portion 23 are not limited. FIG. 10 is a side view showing a rope slippage prevention device 12 according to a modified example of the first embodiment. As shown in FIG. 10, in this modified example, the surface where the fixed-member inclined portion 20 and the sheave 3 face each other is inclined in the axial direction D1 so that the thickness dimension in the radial direction D2 increases toward the sheave 3. Furthermore, the surface where the adjustable-member inclined portion 23 and the housing 11 face each other is inclined in the axial direction D1 so that the thickness dimension in the radial direction D2 decreases toward the sheave 3. Furthermore, the inclination angle of the elongated hole 101 relative to the surface where the rope guard portion 22 and the rope 2 face each other is the same as the inclination angle of the second inclined surface 25 relative to the surface where the adjustable member 14 and the rope 2 face each other. Therefore, when the adjustable member 14 slides and moves in the radial direction D2 while the inclined surfaces of the fixed-member inclined portion 20 and the inclined surfaces of the adjustable member inclined portion 23 are in contact with each other, the elongated hole 101 can slide and move in the radial direction D2 in conjunction with the inclined surface of the fixed-member inclined portion 20. Therefore, even in this case, it is possible to adjust the gap S so that the adjustment member 14 is parallel to the sheave 3.

[0055] Furthermore, the method for adjusting the gap between the rope slippage prevention device 12 according to the first embodiment can make the adjustment member 14 parallel to the rope 2 by including (claim 6).

[0056] It is only necessary that when the adjustment bolt 15 moves in the axial direction D1 with the second inclined surface 25 in contact with the first inclined surface 24, the second inclined surface 25 slides and moves along the first inclined surface 24. For example, the adjustment bolt 15 may fix the adjustment member 14 to the fixed member 13.

[0057] The elastic member is not limited to the spring 18, but may be, for example, a jack bolt.

[0058] The cross-sectional shape of the fixing member base 19 is not limited as long as the rope guard part 22 can be attached via the spring 18 and the fixing member inclined part 20 and the fixing member attachment part 21 can be joined to the two surfaces of the fixing member base 19 in the depth direction D3, respectively.

[0059] The configurations described in the above embodiments are merely examples of the contents of the present disclosure, and may be combined with other known technologies. Furthermore, parts of the configurations may be omitted or modified without departing from the scope of the present disclosure.

[0060] Various aspects of the present disclosure are summarized below as appendices. (Appendix 1) a fixing member fixed to a housing of the hoisting machine, the fixing member being inclined in the axial direction of the sheave so that the radial thickness dimension of the sheave changes as the sheave approaches the sheave, the first inclined surface being the surface facing the surface fixed to the housing; an adjustment member having a surface facing the rope, a second inclined surface being formed as an inclined surface that can come into contact with the first inclined surface, and the second inclined surface being slidable along the first inclined surface; an adjustment bolt provided opposite the housing and movable in the axial direction relative to the fixed member; a fastening member interposed between the adjustment member and the adjustment bolt; Equipped with When the second inclined surface is in contact with the first inclined surface, the adjustment bolt moves, causing the second inclined surface to slide along the first inclined surface via the fastening member. Rope prevention device. (Appendix 2) An elastic member is provided between the fixed member and the adjustment member. Attachment 1: A rope prevention device. (Appendix 3) the fixing member has a contact surface that comes into contact with the adjustment member when the second inclined surface slides along the first inclined surface, The contact surface is provided with a protrusion, The adjustment member is provided with an elongated hole that engages with the protrusion, The inclination angle of the elongated hole with respect to the surface where the adjustment member and the rope face is the same as the inclination angle of the second inclined surface with respect to the surface where the adjustment member and the rope face. A rope prevention device as described in appendix 1 or 2. (Appendix 4) The position of the protrusion in the radial direction within the elongated hole is set so that when the protrusion is disposed at a position closest to the sheave in the radial direction, a gap between the adjustment member and the rope has a predetermined dimension. A rope prevention device as described in Appendix 3. (Appendix 5) The fixed member has a fixed member scale formed thereon, the fixed member scale being a line segment extending in a direction along the axial direction, The adjustment member has an adjustment member scale formed thereon, the adjustment member being a line segment extending in a direction along the axial direction, When the gap between the adjustment member and the rope is a predetermined dimension, the positions of the fixing member scale and the adjustment member scale in the radial direction are aligned. A rope prevention device according to any one of appendices 1 to 3. (Appendix 6) A method for adjusting a gap between the rope and the adjustment member using the rope slippage prevention device according to any one of appendices 1 to 5, a first step of moving the adjustment bolt to move the adjustment member so that the adjustment member contacts the rope; a second step of adjusting the gap by moving the adjustment bolt from a state in which the adjustment member is in contact with the rope, thereby moving the adjustment member; A method for adjusting the gap of a rope prevention device. [Explanation of symbols]

[0061] 1 hoist, 2 rope, 3 sheave, 4 motor, 5 shaft, 6 bearing, 7 bearing stand, 8 base member, 9 stator, 10 rotor, 11 housing, 12 rope anti-slip device, 13 fixing member, 14 adjusting member, 15 adjusting bolt, 16 fixing bolt, 17 female thread hole, 18 spring, 19 fixing member base, 20 fixing member inclined portion, 21 fixing member mounting portion, 22 rope guard portion, 23 adjusting member inclined portion, 24 first inclined surface, 25 second inclined surface, 26 contact surface, 27 washer, 30 fixing member scale, 31 adjusting member scale, 100 protrusion, 101 elongated hole, 200 first adjusting bolt insertion hole, 201 fixing bolt insertion hole, 202 second adjusting bolt insertion hole

Claims

1. a fixing member fixed to a housing of the hoisting machine, the fixing member having a first inclined surface formed thereon, the first inclined surface being a surface facing the surface fixed to the housing, the first inclined surface being inclined in the axial direction of the sheave so that the thickness dimension of the sheave in the radial direction changes as the sheave approaches the sheave; an adjustment member having a surface facing the rope, a second inclined surface being formed as an inclined surface that can come into contact with the first inclined surface, and the second inclined surface being slidable along the first inclined surface; an adjustment bolt provided opposite the housing and movable in the axial direction relative to the fixed member; a fastening member interposed between the adjustment member and the adjustment bolt; Equipped with When the second inclined surface is in contact with the first inclined surface, the adjustment bolt moves, causing the second inclined surface to slide along the first inclined surface via the fastening member. Rope prevention device.

2. An elastic member is provided between the fixed member and the adjustment member. The rope stopper device according to claim 1.

3. the fixing member has a contact surface that comes into contact with the adjustment member when the second inclined surface slides along the first inclined surface, The contact surface is provided with a protrusion, The adjustment member is provided with an elongated hole that engages with the protrusion, The inclination angle of the elongated hole with respect to the surface where the adjustment member and the rope face each other is the same as the inclination angle of the second inclined surface with respect to the surface where the adjustment member and the rope face each other.

3. A rope prevention device according to claim 1 or 2.

4. The position of the protrusion in the radial direction within the elongated hole is set so that when the protrusion is disposed at a position closest to the sheave in the radial direction, a gap between the adjustment member and the rope has a predetermined dimension. The rope stopper device according to claim 3.

5. The fixed member has a fixed member scale formed thereon, the fixed member scale being a line segment extending in a direction along the axial direction, The adjustment member has an adjustment member scale formed thereon, the adjustment member being a line segment extending in a direction along the axial direction, The fixing member scale and the adjusting member scale are provided so that their positions in the radial direction coincide with each other when the gap between the adjusting member and the rope is a predetermined dimension.

3. A rope prevention device according to claim 1 or 2.

6. A method for adjusting a gap between the rope and the adjustment member using the rope slippage prevention device according to claim 1 or 2, a first step of moving the adjustment bolt to move the adjustment member so that the adjustment member contacts the rope; a second step of adjusting the gap by moving the adjustment bolt from a state in which the adjustment member is in contact with the rope, thereby moving the adjustment member; A method for adjusting the gap of a rope prevention device.

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