Auxiliary tool for pulling out brake wheel

Abstract

The invention provides a brake wheel pulling-out assistive device which can pull out a brake wheel from a driving shaft more reliably and does not need a rotation stopping device. The brake wheel pulling-out auxiliary tool is provided with the components of a zooming device supporting component (1) which is arranged on a driving shaft (6); a pair of pull-out rods (2) which are respectively arranged in a pair of through holes (705) formed in the brake wheel (7); an extraction member (3) that is provided across the pair of extraction rods (2) and moves each of the pair of extraction rods (2) in the extraction direction (D1a) by moving in the extraction direction (D1a); and a scaling device (4) which is provided across the scaling device support member (1) and the extraction member (3), stretches and contracts in a direction along the axis of the drive shaft (6), and moves the extraction member (3) in the extraction direction (D1a) by contracting the scaling device (4), and the extraction member (3) moves each of the pair of extraction rods (2) in the extraction direction (D1a).

Description

Technical Field

[0001] This disclosure relates to a brake wheel pull-out device. Background Technology

[0002] Conventionally, brake wheel removal tools are known, comprising a removal plate, a push screw, a pair of connecting mechanisms, and a pair of removal bars. A threaded hole is formed in the removal plate. The push screw is inserted into the threaded hole in the removal plate. Each connecting mechanism connects a corresponding removal bar of the pair to the removal plate. Each removal bar is inserted into a corresponding through hole formed in a pair of through holes in the brake wheel and engaged in the brake wheel. With each removal bar inserted into its corresponding through hole and engaged in the brake wheel, the push screw is moved relative to the removal plate toward the brake wheel to push the drive shaft, thereby removing the brake wheel from the drive shaft (see, for example, Patent Document 1).

[0003] Existing technical documents

[0004] Patent Document 1: Japanese Patent Application Publication No. 2021-187630

[0005] However, in the structure of the brake wheel pull-out accessory described in Patent Document 1, each connecting mechanism includes a first connecting piece, a second connecting piece, and a third connecting piece. The first connecting piece is connected to the pull-out bar. The second connecting piece is connected to the pull-out base plate. The third connecting piece is connected to both the first and second connecting pieces. The first connecting piece and the pull-out bar are arranged along the axis of the drive shaft. The third connecting piece is arranged at an angle relative to the first connecting piece. The angle of the third connecting piece relative to the first connecting piece is adjusted according to the radial direction of the brake wheel. When the force of the push screw pushing the drive shaft is large, the angle of the third connecting piece relative to the first connecting piece may change when the push screw pushes the drive shaft. If the angle of the third connecting piece relative to the first connecting piece changes when the push screw pushes the drive shaft, there is a concern that the first connecting piece may tilt relative to the axis of the drive shaft, causing the pull-out bar to bend. If the pull-out bar bends, it becomes difficult to pull the brake wheel out of the drive shaft. In addition, since the drive shaft is pushed by rotating the push screw, an anti-rotation device is required to prevent the drive shaft and brake wheel from rotating. Summary of the Invention

[0006] This disclosure was made to solve the aforementioned problems, and its purpose is to provide a brake wheel pull-out device that can more reliably pull the brake wheel out of the drive shaft without the need for an anti-rotation device.

[0007] The brake wheel pull-out aid disclosed herein comprises: a scaling device support member disposed on a drive shaft; a pair of pull-out bars, each disposed in a pair of through holes formed in the brake wheel; a pull-out member disposed across the pair of pull-out bars, which moves in a pull-out direction to move each of the pair of pull-out bars in the pull-out direction, the pull-out direction being along the axis of the drive shaft and in a direction that pulls the brake wheel out of the drive shaft; and a scaling device disposed across the scaling device support member and the pull-out member, which extends and retracts in a direction along the axis of the drive shaft, wherein by retracting the scaling device, the scaling device moves the pull-out member in the pull-out direction, and the pull-out member moves each of the pair of pull-out bars in the pull-out direction.

[0008] Invention Effects

[0009] According to the brake wheel pull-out aid disclosed herein, the brake wheel can be pulled out of the drive shaft more reliably without the need for an anti-rotation device. Attached Figure Description

[0010] Figure 1 This is a front view showing the brake wheel pull-out auxiliary device of Embodiment 1.

[0011] Figure 2 It is shown Figure 1 The right-side view of the brake wheel being pulled out of the auxiliary device.

[0012] Figure 3 It is along Figure 1 A cross-sectional view observed along line III-III.

[0013] Figure 4 It is along Figure 1 A sectional view taken along line IV-IV.

[0014] Figure 5 It is shown Figure 1 Front view of the drive shaft and brake wheel.

[0015] Figure 6 It is shown Figure 1 The pantograph is a front view of the pantograph after it has been axially contracted.

[0016] Figure 7 This is a front view showing the drive shaft and brake wheel in the state before the brake wheel of Embodiment 1 is pulled out of the auxiliary device.

[0017] Figure 8 It is shown in Figure 7 The front view shows the state of the drive shaft with the fixed part installed.

[0018] Figure 9 It shows that Figure 1 The main view of the zoom device after it has been extended.

[0019] Figure 10 It is shown in Figure 9 The front view shows the state of the pull-out component positioned between the first and second pressing components and the scaling device support body.

[0020] Figure 11 It is shown in Figure 10 The front view shows the state of the support component of the pull-out component, into which the scaling device support body is inserted through the through hole.

[0021] Figure 12 It is shown Figure 11 The scaling device support body is installed on Figure 8 The front view of the state of the fixed part.

[0022] Figure 13 It shows crossing Figure 12 The front view shows the state of the pull-out parts and brake wheel with a pair of pull-out rods installed.

[0023] Figure 14 This is a front view showing the brake wheel pull-out aid of the first comparative example.

[0024] Figure 15 This is a front view showing the brake wheel pull-out aid of the second comparative example.

[0025] Figure 16 It is shown Figure 15 The front view of the state after the angle of the third connecting piece relative to the first connecting piece has changed.

[0026] Figure 17 This is a front view showing the brake wheel pull-out auxiliary device of Embodiment 2.

[0027] Figure 18 It is shown Figure 17 The right-side view of the brake wheel being pulled out of the auxiliary device.

[0028] Figure 19 This is a structural diagram showing three types of pull-out components.

[0029] Figure 20 This is a structural diagram showing three types of fixing parts.

[0030] Label Explanation

[0031] 1: Scaling device support component; 2: Pull-out rod; 3: Pull-out component; 4: Scaling device; 5: Linkage component rotation device; 6: Drive shaft; 7: Brake wheel; 8: Nut; 9: Hammer; 10: Threaded component; 101: Fixing part; 102: Scaling device support body; 103: First cylindrical part; 104: Second cylindrical part; 105: Third cylindrical part; 106: Insertion hole; 107: Cylindrical part; 108: Support part; 109: Insertion hole; 110: Insertion hole; 201: Pull-out bolt; 202: Nut; 203: Washer; 301: Support component for... 302: Through hole for pulling out the rod; 401: Rotating shaft; 402: First connecting rod assembly; 403: First pushing assembly; 404: Second connecting rod assembly; 405: Second pushing assembly; 501: Guide assembly; 502: Rotating shaft; 503: Third connecting rod assembly; 504: First connecting shaft; 505: Fourth connecting rod assembly; 506: Second connecting shaft; 507: Cylindrical part; 508: Support part; 601: Threaded groove; 701: Inner cylindrical part; 702: Flange part; 703: Outer cylindrical part; 704: Through hole; 705: Through hole. Detailed Implementation

[0032] Implementation method 1.

[0033] Figure 1 This is a front view showing the brake wheel pull-out auxiliary device of Embodiment 1. Figure 2 It is shown Figure 1 The right-side view of the brake wheel being pulled out of the auxiliary device. Figure 3 It is along Figure 1 A cross-sectional view observed along line III-III. Figure 4 It is along Figure 1 A sectional view taken along line IV-IV.

[0034] The brake wheel removal tool of Embodiment 1 includes a scaling device support member 1, a pair of removal rods 2, a removal member 3, a scaling device 4, and a connecting rod member rotation device 5. The brake wheel removal tool of Embodiment 1 is used to remove the brake wheel 7, which is fixed to the drive shaft 6 of the elevator traction machine, from the drive shaft 6.

[0035] Figure 5 It is shown Figure 1The front view of the drive shaft 6 and brake wheel 7. The direction along the axis of the drive shaft 6 is defined as axial direction D1. The direction along the radius of a circle centered on the axis of the drive shaft 6 in a plane perpendicular to the axis of the drive shaft 6 is defined as radial direction D2. The direction along the circumference of a circle centered on the axis of the drive shaft 6 in a plane perpendicular to the axis of the drive shaft 6 is defined as circumferential direction D3. The direction along the axis of the drive shaft 6 that pulls the brake wheel 7 out of the drive shaft 6 is defined as the pull-out direction D1a. The direction along the axis of the drive shaft 6 opposite to the pull-out direction D1a is defined as the pushing direction D1b.

[0036] The drive shaft 6 is cylindrical in shape. The outer peripheral surface of the drive shaft 6 is tapered in shape, with its diameter continuously decreasing as it moves toward the pull-out direction D1a. A threaded groove 601 is formed on the outer peripheral surface of the portion of the drive shaft 6 on the pull-out direction D1a side.

[0037] The brake wheel 7 is mounted on the drive shaft 6. The brake wheel 7 has an inner cylindrical portion 701, a flange portion 702, and an outer cylindrical portion 703. The inner cylindrical portion 701, the flange portion 702, and the outer cylindrical portion 703 are integrally formed together.

[0038] The inner cylindrical portion 701 is cylindrical in shape. The inner cylindrical portion 701 is coaxially arranged with the axis of the drive shaft 6. A through hole 704 is formed at the center of the radial direction D2 of the inner cylindrical portion 701.

[0039] The through hole 704 penetrates the inner cylindrical portion 701 in the axial direction D1. The inner circumferential surface of the through hole 704 is formed in a conical shape such that its diameter continuously decreases as it moves toward the pull-out direction D1a.

[0040] A drive shaft 6 is inserted into the through hole 704. The brake wheel 7 is mounted on the drive shaft 6 by inserting the drive shaft 6 into the through hole 704. The brake wheel 7 is removed from the drive shaft 6 by pulling the drive shaft 6 out of the through hole 704.

[0041] The flange portion 702 is in the shape of a circular plate. The flange portion 702 protrudes outward from the outer peripheral surface of the portion on the pull-out direction D1a side of the inner cylindrical portion 701 toward the radial direction D2.

[0042] A pair of through holes 705 are formed in the middle portion of the flange portion 702 in the radial direction D2. Each through hole 705 penetrates the flange portion 702 in the axial direction D1. The pair of through holes 705 are configured such that, when viewed along the axial direction D1, a through hole 704 is disposed between the pair of through holes 705.

[0043] The outer cylindrical portion 703 is cylindrical in shape. The outer cylindrical portion 703 is coaxially arranged with the axis of the drive shaft 6. The outer cylindrical portion 703 is located on the outer side of the radial direction D2 of the flange portion 702.

[0044] exist Figure 5 In this configuration, a nut 8 is installed on the drive shaft 6. The nut 8 is installed on the drive shaft 6 by screwing the drive shaft 6 into the inside of the nut 8. Installing the nut 8 on the drive shaft 6 prevents the brake wheel 7 from disengaging from the drive shaft 6. The nut 8 is installed and removed relative to the drive shaft 6 by rotating the nut 8 circumferentially D3 relative to the drive shaft 6. When the brake wheel 7 is pulled out of the drive shaft 6, the nut 8 is removed from the drive shaft 6.

[0045] The scaling device support component 1 is mounted on the drive shaft 6. The scaling device support component 1 includes a fixing part 101 and a scaling device support body 102.

[0046] The fixing part 101 is fixed to the drive shaft 6. The fixing part 101 includes a first cylindrical part 103, a second cylindrical part 104, and a third cylindrical part 105. The first cylindrical part 103 is mounted on the drive shaft 6. The second cylindrical part 104 is disposed on the pull-out direction D1a side relative to the first cylindrical part 103. The third cylindrical part 105 is disposed on the pull-out direction D1a side relative to the second cylindrical part 104. The first cylindrical part 103, the second cylindrical part 104, and the third cylindrical part 105 are arranged in a straight line along the axis of the drive shaft 6. The first cylindrical part 103, the second cylindrical part 104, and the third cylindrical part 105 are integrally formed with each other.

[0047] The first cylindrical portion 103, the second cylindrical portion 104, and the third cylindrical portion 105 are each cylindrical in shape. The diameter of the first cylindrical portion 103 is larger than the diameter of the end of the drive shaft 6 on the pull-out direction D1a side. The diameter of the second cylindrical portion 104 is smaller than the diameter of the first cylindrical portion 103. The diameter of the third cylindrical portion 105 is smaller than the diameter of the second cylindrical portion 104.

[0048] An insertion hole 106 is formed on the surface of the first cylindrical portion 103 facing the pushing direction D1b. The insertion hole 106 is configured to be recessed inward toward the axial direction D1 in the surface of the first cylindrical portion 103 facing the pushing direction D1b. The end of the drive shaft 6 on the pull-out direction D1a side is inserted into the insertion hole 106.

[0049] A threaded groove is formed on the inner circumferential surface of the insertion hole 106. The first cylindrical portion 103 is installed on the drive shaft 6 by screwing the drive shaft 6 into the insertion hole 106, and the fixing portion 101 is fixed to the drive shaft 6. The fixing portion 101 is mounted and dismounted relative to the drive shaft 6 by rotating the first cylindrical portion 103 in the circumferential direction D3 relative to the drive shaft 6.

[0050] The scaling device support body 102 is mounted on the fixing part 101. The scaling device support body 102 includes a cylindrical part 107 and a support part 108. The cylindrical part 107 is mounted on the fixing part 101. The support part 108 is disposed on the pull-out direction D1a side relative to the cylindrical part 107. The cylindrical part 107 and the support part 108 are arranged in a straight line along the axis of the drive shaft 6. The cylindrical part 107 and the support part 108 are integrally formed together.

[0051] The cylindrical portion 107 is cylindrical in shape. The diameter of the cylindrical portion 107 is the same as the diameter of the second cylindrical portion 104. The support portion 108 is prism-shaped. When viewed along the axial direction D1, the dimensions of the support portion 108 in the height direction and the width direction are larger than the diameter of the cylindrical portion 107.

[0052] An insertion hole 109 is formed on the surface of the cylindrical portion 107 facing the pressing direction D1b. The insertion hole 109 is configured to be recessed inward toward the axial direction D1 in the surface of the cylindrical portion 107 facing the pressing direction D1b. A third cylindrical portion 105 is inserted into the insertion hole 109.

[0053] The cylindrical portion 107 is installed on the third cylindrical portion 105 by inserting it into the insertion hole 109, and the scaling device support body 102 is installed on the fixing portion 101. The scaling device support body 102 is detached from the fixing portion 101 by moving the cylindrical portion 107 relative to the third cylindrical portion 105 in the axial direction D1.

[0054] An insertion hole 110 is formed on the surface of the support portion 108 facing the pull-out direction D1a. The insertion hole 110 is configured to be recessed inward toward the axial direction D1 in the surface of the support portion 108 facing the pull-out direction D1a.

[0055] A pair of pull rods 2 are each inserted into a pair of through holes 705 formed in the flange portion 702 of the brake wheel 7. Each pull rod 2 has a pull bolt 201, a nut 202 and a washer 203.

[0056] The pull-out bolt 201 is inserted into the through hole 705. A nut 202 and a washer 203 are mounted on the pull-out bolt 201. The flange 702 of the brake wheel 7 is positioned between the head of the pull-out bolt 201 and the nut 202 and washer 203. In other words, the nut 202 and washer 203 are positioned opposite to the side of the flange 702 of the brake wheel 7 opposite to the head side of the pull-out bolt 201. The washer 203 is positioned between the nut 202 and the flange 702 of the brake wheel 7. By moving the pull-out bolt 201 in the pull-out direction D1a, the nut 202, via the washer 203, engages with the flange 702 of the brake wheel 7, and the brake wheel 7 disengages from the drive shaft 6.

[0057] The pull-out component 3 is arranged across a pair of pull-out rods 2. The pull-out component 3 is shaped like a long plate.

[0058] A through hole 301 for supporting components is formed at the center of the pull-out component 3 along its length. The through hole 301 for supporting components penetrates the pull-out component 3 along its thickness direction. The diameter of the through hole 301 for supporting components is larger than the diameters of the second cylindrical portion 104 and the cylindrical portion 107 of the scaling device support component 1. The second cylindrical portion 104 and the cylindrical portion 107 are inserted into the through hole 301 for supporting components.

[0059] A pair of through holes 302 for pulling out rods are formed at each end of the pulling member 3 along its length. Each through hole 302 for pulling out rods penetrates the pulling member 3 along its thickness. The diameter of each through hole 302 for pulling out rods is larger than the diameter of the threaded portion of the pulling bolt 201, but smaller than the diameter of the head of the pulling bolt 201. A corresponding pulling bolt 201 is inserted into each through hole 302 for pulling out rods.

[0060] A pull-out member 3 is disposed between the head of the pull-out bolt 201 and the nut 202. In other words, the head of the pull-out bolt 201 is disposed opposite to the side of the pull-out member 3 opposite to the side of the nut 202. By moving the pull-out member 3 in the pull-out direction D1a, the heads of each pull-out bolt 201 are engaged with the pull-out member 3, and a pair of pull-out rods 2 move in the axial direction D1 away from the drive shaft 6.

[0061] The scaling device 4 is arranged across the scaling device support member 1 and the pull-out member 3. The scaling device 4 includes a rotation shaft 401, a pair of first connecting rod members 402, a first pushing member 403, a pair of second connecting rod members 404, and a second pushing member 405.

[0062] The rotation shaft 401 is provided on the support portion 108 of the scaling device support member 1. The rotation shaft 401 is configured to extend in a direction perpendicular to the axis D1.

[0063] A pair of first linkage components 402 are arranged separately from each other along the axial direction of the rotation shaft 401. The pair of first linkage components 402 are arranged opposite each other along the axial direction of the rotation shaft 401. A scaling device support component 1 and a pull-out component 3 are disposed between the pair of first linkage components 402.

[0064] Each first link component 402 is shaped like a long plate. A rotating shaft 401 is installed at the middle portion of each first link component 402 along its length. Each first link component 402 is capable of rotating about the rotating shaft 401.

[0065] The first pressing member 403 is cylindrical in shape. The first pressing member 403 is disposed across one end of each first connecting rod member 402 along its length. The first pressing member 403 is positioned axially D1 closer to the fixing part 101 than the pull-out member 3. The first pressing member 403 moves axially D1 by rotating each first connecting rod member 402 about the rotation axis 401.

[0066] A pair of second linkage components 404 are arranged separately from each other along the axial direction of the rotation shaft 401. The pair of second linkage components 404 are arranged opposite each other along the axial direction of the rotation shaft 401. A scaling device support component 1 and a pull-out component 3 are disposed between the pair of second linkage components 404.

[0067] Each second link component 404 is shaped like a long plate. A rotating shaft 401 is mounted at the middle portion of each second link component 404 along its length. Each second link component 404 is capable of rotating about the rotating shaft 401.

[0068] The second pushing member 405 is cylindrical in shape. The second pushing member 405 is disposed across one end of each of the second connecting rod members 404 along its length. The second pushing member 405 is positioned axially D1 closer to the fixing part 101 than the pull-out member 3. The second pushing member 405 moves axially D1 by rotating each of the second connecting rod members 404 about the rotation axis 401.

[0069] The first pushing member 403 is positioned on one side of the rotation shaft 401 along the length direction of the pulling member 3, and the second pushing member 405 is positioned on the other side of the rotation shaft 401 along the length direction of the pulling member 3.

[0070] By rotating the first link component 402 and the second link component 404, the first pressing component 403 and the second pressing component 405 move in the axial direction D1. By moving the first pressing component 403 and the second pressing component 405 in the axial direction D1, the scaling device 4 extends and retracts in the axial direction D1.

[0071] Specifically, by rotating the first link member 402 to move the first pushing member 403 in the pulling direction D1a, and by rotating the second link member 404 to move the second pushing member 405 in the pulling direction D1a, the scaling device 4 retracts in the axial direction D1. By retracting the scaling device 4 in the axial direction D1, the first pushing member 403 and the second pushing member 405 exert forces on the pulling member 3 in the pulling direction D1a.

[0072] The linkage component rotation device 5 is arranged across the first linkage component 402 and the second linkage component 404. The linkage component rotation device 5 includes a guide component 501, a rotation shaft 502, a pair of third linkage components 503, a first connecting shaft 504, a pair of fourth linkage components 505, and a second connecting shaft 506.

[0073] The guide member 501 is mounted on the support portion 108 of the scaling device support body 102. The guide member 501 includes a cylindrical portion 507 and a support portion 508. The cylindrical portion 507 is mounted on the support portion 108. The support portion 508 is disposed on the pull-out direction D1a side relative to the cylindrical portion 507. The cylindrical portion 507 and the support portion 508 are arranged in a straight line along the axis of the drive shaft 6. The cylindrical portion 507 and the support portion 508 are integrally formed together.

[0074] The cylindrical portion 507 is cylindrical in shape. The support portion 508 is prism in shape. When viewed along the axial direction D1, the dimensions of the support portion 508 in the height direction and the width direction are larger than the diameter of the cylindrical portion 507.

[0075] The cylindrical portion 507 is inserted into the insertion hole 110. With the cylindrical portion 507 inserted into the insertion hole 110, the cylindrical portion 507 can move in the axial direction D1. By moving the cylindrical portion 507 in the axial direction D1, the distance between the support portion 108 and the support portion 508 changes.

[0076] A rotating shaft 502 is provided on the support portion 508. The rotating shaft 502 is configured to extend in a direction perpendicular to the axial direction D1. Specifically, the rotating shaft 502 is arranged parallel to the rotating shaft 401.

[0077] A pair of third link components 503 are arranged separately from each other in the axial direction of the rotation shaft 502. The pair of third link components 503 are arranged opposite each other in the axial direction of the rotation shaft 502. A guide component 501 is disposed between the pair of third link components 503.

[0078] Each third link component 503 is shaped like a long plate. A rotating shaft 502 is mounted at one end of each third link component 503 along its length. Each third link component 503 is capable of rotating about the rotating shaft 502.

[0079] The first connecting shaft 504 is disposed across the other end of each third link member 503 along its length. Each third link member 503 is rotatable about the first connecting shaft 504. The first connecting shaft 504 is disposed across the other end of each second link member 404 along its length. Each second link member 404 is rotatable about the first connecting shaft 504.

[0080] The third link component 503 is rotated about the rotation axis 502, and the second link component 404 is rotated about the rotation axis 401.

[0081] A pair of fourth link components 505 are arranged separately from each other in the axial direction of the rotation shaft 502. The pair of fourth link components 505 are arranged opposite each other in the axial direction of the rotation shaft 502. A guide component 501 is disposed between the pair of fourth link components 505.

[0082] Each fourth link component 505 is shaped like a long plate. A rotating shaft 502 is mounted at one end of each fourth link component 505 along its length. Each fourth link component 505 is capable of rotating about the rotating shaft 502.

[0083] The second connecting shaft 506 is disposed across the other end of each fourth link member 505 in the longitudinal direction. Each fourth link member 505 is rotatable about the second connecting shaft 506. The second connecting shaft 506 is disposed across the other end of each first link member 402 in the longitudinal direction. Each first link member 402 is rotatable about the second connecting shaft 506.

[0084] By rotating the fourth link component 505 around the rotation axis 502, the first link component 402 rotates around the rotation axis 401.

[0085] Figure 6 It is shown Figure 1 The front view of the scaling device 4 in its retracted state along the axial direction D1. The connecting rod rotating device 5 is operated by hammer 9. Specifically, the connecting rod rotating device 5 is operated by striking the support portion 508 of the guide member 501 with hammer 9 toward the support portion 108 of the scaling device support body 102.

[0086] The guide member 501 is operated to move in the pushing direction D1b, thereby causing the third link member 503 and the fourth link member 505 to rotate around the rotation axis 502, so that the first connecting shaft 504 and the second connecting shaft 506 separate from each other. As a result, the fourth link member 505 rotates the first link member 402, causing the first pushing member 403 to move in the pulling direction D1a, and the third link member 503 rotates the second link member 404, causing the second pushing member 405 to move in the pulling direction D1a.

[0087] Therefore, the linkage component rotating device 5 is operated to rotate the first linkage component 402, causing the first pushing component 403 to move in the pulling direction D1a. Furthermore, the linkage component rotating device 5 is operated to rotate the second linkage component 404, causing the second pushing component 405 to move in the pulling direction D1a.

[0088] The scaling device support component 1 is mounted on the drive shaft 6. The pull-out component 3, the scaling device 4, and the connecting rod component rotation device 5 are mounted on the scaling device support component 1. A pair of pull-out rods 2 are mounted across the brake wheel 7 and the pull-out component 3. Thus, when removing the brake wheel 7 from the drive shaft 6, the operator does not need to hold the brake wheel pull-out tool.

[0089] A gap T1 is provided between the end face of the nut 8 on the inner cylindrical part of the brake wheel 7 and the end face of the brake wheel flange on the fixing part 101. When the brake wheel 7 is released from the drive shaft 6, after the brake wheel 7 moves in the pull-out direction D1a by the amount of gap T1, the brake wheel 7 abuts against the fixing part 101, thereby restricting further movement.

[0090] Next, the steps of installing the brake wheel pull-out auxiliary device of Embodiment 1 onto the drive shaft 6 and the brake wheel 7 will be described. Figure 7 This is a front view showing the drive shaft 6 and brake wheel 7 in their state before the brake wheel of embodiment 1 is removed from the auxiliary device. First, the nut 8 is removed from the drive shaft 6 by rotating it circumferentially.

[0091] Figure 8 It is shown in Figure 7 The front view shows the drive shaft 6 with the fixing part 101 installed. After removing the nut 8 from the drive shaft 6, the drive shaft 6 is inserted into the insertion hole 106 of the first cylindrical part 103, and the fixing part 101 is fixed to the drive shaft 6.

[0092] Figure 9 It shows that Figure 1 The front view of the extended state of the scaling device 4. After fixing the fixing part 101 to the drive shaft 6, the scaling device 4 is extended in the axial direction D1. At this time, the dimension T2 in the axial direction D1 between the first pushing member 403 and the second pushing member 405 and the scaling device support body 102 is larger than the dimension in the thickness direction of the pull-out member 3.

[0093] Figure 10 It is shown in Figure 9The front view shows the state in which the pull-out member 3 is arranged between the first pressing member 403 and the second pressing member 405 and the scaling device support body 102. After the scaling device 4 is extended in the axial direction D1, the pull-out member 3 is arranged between the first pressing member 403 and the second pressing member 405 and the scaling device support body 102.

[0094] Figure 11 It is shown in Figure 10 The front view shows the state in which the scaling device support body 102 is inserted into the through hole 301 of the support member of the pull-out member 3. After the pull-out member 3 is positioned between the first pushing member 403 and the second pushing member 405 and the scaling device support body 102, the cylindrical portion 107 of the scaling device support body 102 is inserted into the through hole 301 of the support member of the pull-out member 3. Furthermore, the scaling device 4 is contracted in the axial direction D1 so that the first pushing member 403 and the second pushing member 405 come into contact with the pull-out member 3.

[0095] Figure 12 It is shown Figure 11 The scaling device support body 102 is installed on Figure 8 The front view of the state of the fixing part 101. After inserting the cylindrical part 107 of the scaling device support body 102 into the through hole 301 of the support member of the pull-out member 3, the third cylindrical part 105 of the fixing part 101 is inserted into the insertion hole 109 of the cylindrical part 107, and the scaling device support body 102 is mounted on the fixing part 101.

[0096] Figure 13 It shows crossing Figure 12 The front view shows the state in which a pair of pull-out rods 2 are mounted on the pull-out component 3 and the brake wheel 7. After the zoom device support body 102 is mounted on the fixing part 101, a pair of pull-out rods 2 are mounted across the pull-out component 3 and the brake wheel 7. The steps of mounting the brake wheel pull-out auxiliary tool of Embodiment 1 to the drive shaft 6 and the brake wheel 7 are completed by the above steps.

[0097] The fixing part 101 is installed on the drive shaft 6, and the scaling device support body 102 and the pull-out part 3 are installed together. Then, the scaling device support body 102 is installed on the fixing part 101, and a pair of pull-out rods 2 are installed across the pull-out part 3 and the brake wheel 7. Thus, when assembling the brake wheel pull-out tool, the operator does not need to hold a heavy object.

[0098] Next, the brake wheel pull-out device of the first comparative example will be described. Figure 14This is a front view showing the brake wheel removal accessory of the first comparative example. The brake wheel removal accessory of the first comparative example includes a removal base plate 1A, a push screw 2A, and a pair of claw members 3A. A threaded hole 11A is formed in the removal base plate 1A. The push screw 2A is inserted into the threaded hole 11A formed in the removal base plate 1A. The pair of claw members 3A are rotatably supported on the removal base plate 1A. Each claw member 3A is engaged with the periphery of the brake wheel 7. With each claw member 3A engaged with the periphery of the brake wheel 7, the push screw 2A is moved relative to the removal base plate 1A toward the brake wheel 7 to push the drive shaft 6, thereby removing the brake wheel 7 from the drive shaft 6.

[0099] In the brake wheel removal tool of the first comparative example, each claw component 3A is engaged with the periphery of the brake wheel 7, thereby contacting the outer peripheral surface of the brake wheel 7. Because the claw components 3A are in contact with the outer peripheral surface of the brake wheel 7, the outer peripheral surface of the brake wheel 7 may be damaged. Since the outer peripheral surface of the brake wheel 7 is used as the braking surface, damage to the braking surface of the brake wheel 7 will also result in damage. Furthermore, in the brake wheel removal tool of the first comparative example, the push screw 2A needs to rotate when it pushes the drive shaft 6. To prevent the brake wheel 7 from rotating with the rotation of the push screw 2A, an anti-rotation device needs to be installed on the brake wheel 7.

[0100] On the other hand, in the brake wheel removal tool of Embodiment 1, the removal rod 2 passes through the through hole 705 of the brake wheel 7 and is locked in place by the brake wheel 7. This prevents damage to the outer circumferential surface of the brake wheel 7. Furthermore, in the brake wheel removal tool of Embodiment 1, the brake wheel 7 does not rotate when it is removed from the drive shaft 6. Therefore, it is unnecessary to install an anti-rotation device on the brake wheel 7.

[0101] Next, the brake wheel pull-out device of the second comparative example will be described. Figure 15 This is a front view showing the brake wheel removal accessory of the second comparative example. The brake wheel removal accessory of the second comparative example includes a removal base plate 1B, a push screw 2B, a pair of connecting mechanisms 3B, and a pair of removal rods 4B. A threaded hole 11B is formed in the removal base plate 1B. The push screw 2B is inserted into the threaded hole 11B formed in the removal base plate 1B. The pair of connecting mechanisms 3B connects the corresponding removal rods 4B of the pair to the removal base plate 1B. The pair of removal rods 4B are inserted into each of the pair of through holes 705 formed in the brake wheel 7, so that they are locked in the brake wheel 7. With each removal rod 4B inserted into the corresponding through hole 705 and locked in the brake wheel 7, the push screw 2B is moved relative to the removal base plate 1B toward the brake wheel 7 to push the drive shaft 6, thereby pulling the brake wheel 7 out of the drive shaft 6.

[0102] In the brake wheel pull-out accessory of the second comparative example, each connecting mechanism 3B includes a first connecting piece 31B, a second connecting piece 32B, and a third connecting piece 33B. The first connecting piece 31B is connected to the pull-out rod 4B. The second connecting piece 32B is connected to the pull-out base plate 1B. The third connecting piece 33B is connected to both the first connecting piece 31B and the second connecting piece 32B. The first connecting piece 31B is arranged along the axis of the drive shaft 6, just like the pull-out rod 4B. The third connecting piece 33B is arranged at an angle relative to the first connecting piece 31B. The angle of the third connecting piece 33B relative to the first connecting piece 31B is adjusted according to the radial direction of the brake wheel 7.

[0103] Figure 16 It is shown Figure 15 The front view shows the state after the angle of the third connecting piece 33B relative to the first connecting piece 31B changes. In the brake wheel pull-out accessory of the second comparative example, when the force of the push screw 2B pushing the drive shaft 6 is large, the angle of the third connecting piece 33B relative to the first connecting piece 31B may change when the push screw 2B pushes the drive shaft 6. If the angle of the third connecting piece 33B relative to the first connecting piece 31B changes when the push screw 2B pushes the drive shaft 6, there is a concern that the first connecting piece 31B may tilt relative to the axis of the drive shaft 6, and the pull-out rod 4B may bend.

[0104] On the other hand, in the brake wheel pull-out aid of Embodiment 1, by retracting the scaling device 4, the scaling device 4 moves the pull-out member 3 in the pull-out direction D1a, thereby causing the pull-out member 3 to move the pull-out rod 2 in the pull-out direction D1a. As a result, bending of the pull-out rod 2 can be suppressed.

[0105] As described above, the brake wheel pull-out aid of Embodiment 1 includes a scaling device support member 1, a pair of pull-out rods 2, a pull-out member 3, and a scaling device 4. The scaling device support member 1 is provided on the drive shaft 6. Each of the pair of pull-out rods 2 is provided in a pair of through holes 705 formed in the brake wheel 7. The pull-out member 3 is provided across the pair of pull-out rods 2. By moving the pull-out member 3 in the pull-out direction D1a, the pull-out member 3 causes each of the pair of pull-out rods 2 to move in the pull-out direction D1a. The scaling device 4 is provided across the scaling device support member 1 and the pull-out member 3. The scaling device 4 extends and retracts in the axial direction D1. By retracting the scaling device 4, the scaling device 4 causes the pull-out member 3 to move in the pull-out direction D1a, thereby causing each of the multiple pull-out rods 2 to move in the pull-out direction D1a. According to this structure, even when the force used to pull the brake wheel 7 out of the drive shaft 6 is large, bending of the pull-out rods 2 can be suppressed. This allows for more reliable removal of the brake wheel 7 from the drive shaft 6. Furthermore, according to this structure, the brake wheel 7 does not rotate when it is removed from the drive shaft 6. Therefore, an anti-rotation device is unnecessary.

[0106] Furthermore, in the brake wheel removal aid of Embodiment 1, the scaling device 4 includes a rotating shaft 401, a first connecting rod member 402, a first pressing member 403, a second connecting rod member 404, and a second pressing member 405. The rotating shaft 401 is disposed on the scaling device support member 1. The first connecting rod member 402 is configured to rotate about the rotating shaft 401. The first pressing member 403 is disposed on the first connecting rod member 402. By rotating the first connecting rod member 402, the first pressing member 403 moves in the axial direction D1. The second connecting rod member 404 is configured to rotate about the rotating shaft 401. The second pressing member 405 is disposed on the second connecting rod member 404. By rotating the second connecting rod member 404, the second pressing member 405 moves in the axial direction D1. The scaling device 4 retracts by rotating the first link member 402 to move the first pushing member 403 in the pulling direction D1a, and by rotating the second link member 404 to move the second pushing member 405 in the pulling direction D1a. By retracting the scaling device 4, the first pushing member 403 and the second pushing member 405 exert forces on the pulling member 3 in the pulling direction D1a. Based on this structure, the scaling device 4 can be easily constructed.

[0107] Furthermore, the brake wheel pull-out aid of Embodiment 1 includes a linkage member rotation device 5 disposed across the first linkage member 402 and the second linkage member 404. Operated by the linkage member rotation device 5, the first linkage member 402 is rotated to move the first pressing member 403 in the pull-out direction D1a, and the second linkage member 404 is rotated to move the second pressing member 405 in the pull-out direction D1a. With this structure, the retracting device 4 can be easily retracted.

[0108] Furthermore, in the brake wheel pull-out aid of Embodiment 1, the linkage member rotation device 5 includes a guide member 501, a third linkage member 503, and a fourth linkage member 505. The guide member 501 moves axially D1 relative to the scaling device support member 1. The third linkage member 503 is disposed across the second linkage member 404 and the guide member 501. The fourth linkage member 505 is disposed across the first linkage member 402 and the guide member 501. By operating the guide member 501, the guide member 501 moves in the pushing direction D1b, thereby causing the fourth linkage member 505 to rotate the first linkage member 402, so that the first pushing member 403 moves in the pull-out direction D1a. By operating the guide member 501, the guide member 501 moves in the pushing direction D1b, thereby causing the third linkage member 503 to rotate the second linkage member 404, so that the second pushing member 405 moves in the pull-out direction D1a. Based on this structure, a connecting rod component rotating device 5 can be easily constructed.

[0109] Furthermore, in the brake wheel pull-out aid of Embodiment 1, the scaling device support member 1 has a fixing part 101 fixed to the drive shaft 6. The fixing part 101 restricts the movement of the brake wheel 7 in the pull-out direction D1a when the fixing of the brake wheel 7 relative to the drive shaft 6 is released. According to this structure, when the fixing of the brake wheel 7 relative to the drive shaft 6 is released, it is possible to prevent the brake wheel 7 from falling off the drive shaft 6.

[0110] Implementation method 2.

[0111] Figure 17 This is a front view showing the brake wheel pull-out auxiliary device of Embodiment 2. Figure 18 It is shown Figure 17 The right side view of the brake wheel pull-out aid. In the brake wheel pull-out aid of Embodiment 2, the linkage member rotating device 5 includes a threaded member 10 provided across the first linkage member 402 and the second linkage member 404.

[0112] The threaded component 10 is connected to the first connecting rod component 402 via the second connecting shaft 506, and to the second connecting rod component 404 via the first connecting shaft 504.

[0113] The threaded component 10 is operated to rotate, thereby causing the third link component 503 and the fourth link component 505 to rotate about the rotation axis 502, so that the first connecting shaft 504 and the second connecting shaft 506 are separated from each other. As a result, the threaded component 10 rotates the first link component 402 to move the first pushing component 403 in the pull-out direction D1a, and the threaded component 10 rotates the second link component 404 to move the second pushing component 405 in the pull-out direction D1a.

[0114] The other structures of the brake wheel pull-out aid in Embodiment 2 are the same as those in Embodiment 1.

[0115] As explained above, in the brake wheel pull-out aid of Embodiment 2, the linkage member rotating device 5 has a threaded member 10 that spans the first linkage member 402 and the second linkage member 404. By operating the threaded member 10, the threaded member 10 is rotated, thereby rotating the first linkage member 402 and causing the first pressing member 403 to move in the pull-out direction D1a. Furthermore, by operating the threaded member 10, the threaded member 10 is rotated, thereby rotating the second linkage member 404 and causing the second pressing member 405 to move in the pull-out direction D1a. With this structure, the linkage member rotating device 5 can be easily constructed. Furthermore, with this structure, the linkage member rotating device 5 can be operated without using a hammer 9 to strike the support portion 508 of the guide member 501 towards the support portion 108. Thus, the linkage member rotating device 5 can be operated even when there is no space around the support portion 508 to place the hammer 9.

[0116] Furthermore, in the brake wheel removal aids of each embodiment, the structure used to remove the brake wheel 7 from the drive shaft 6 of the elevator's traction machine has been described. However, it is not limited to this structure. The brake wheel removal aids of each embodiment can also be used when removing the brake wheel 7 from a drive shaft 6 other than the elevator's traction machine.

[0117] Furthermore, in the brake wheel pull-out aids of various embodiments, the structure of a brake wheel pull-out aid having one pull-out component 3 has been described. However, it is not limited to this structure. It is also possible to have a brake wheel pull-out aid having multiple pull-out components 3. Figure 19 This is a structural diagram showing the three types of pull-out components 3. Figure 19 of (a), Figure 19 (b) and Figure 19 The dimensions of each of the pull-out components 3 shown in (c) are different in the length direction. It is possible to select one pull-out component 3 from a plurality of pull-out components 3 corresponding to the diameter of the brake wheel 7.

[0118] Furthermore, in the brake wheel pull-out aids of various embodiments, the structure of the scaling device support member 1 equipped with a fixing part 101 has been described. However, it is not limited to this structure. The scaling device support member 1 equipped with multiple fixing parts 101 may also be described. Figure 20 This is a structural diagram showing three types of fixing parts 101. Figure 20 of (a), Figure 20 (b) and Figure 20 The radial dimensions D2 of the first cylindrical portion 103 of each of the fixing portions 101 shown in (c) are different. Furthermore, Figure 20 of (a), Figure 20 (b) and Figure 20The radial dimensions D2 of the insertion holes 106 of the first cylindrical portions 103 shown in (c) are different from each other. It is possible to select one of the multiple fixing portions 101 corresponding to the diameter of the drive shaft 6.

[0119] The preferred embodiments of the brake wheel pull-out aids have been described above, but the invention is not limited to the brake wheel pull-out aids of the above embodiments. Various modifications and alterations can be made to the brake wheel pull-out aids of the above embodiments without departing from the scope of the claims.

Claims

1. A wheel puller assist device, comprising, The brake wheel pulling-out aid has: a zoom device support member provided to the drive shaft; a pair of pulling-out rods each provided in one of a pair of through-holes formed in the brake wheel; a pulling-out member provided across the pair of pulling-out rods, which moves each of the pair of pulling-out rods in a pulling-out direction by moving in the pulling-out direction, the pulling-out direction being a direction along an axis of the drive shaft in which the brake wheel is pulled out from the drive shaft; and a zoom device provided across the zoom device support member and the pulling-out member and extending and contracting in a direction along the axis of the drive shaft, the zoom device moving the pulling-out member in the pulling-out direction by contracting, the pulling-out member moving each of the pair of pulling-out rods in the pulling-out direction.

2. The brake wheel pulling-out aid according to claim 1, wherein the zoom device has: a rotation shaft provided to the zoom device support member; a first link member provided so as to be rotatable about the rotation shaft; a first push member provided to the first link member, which moves in the direction along the axis of the drive shaft by rotation of the first link member; a second link member provided so as to be rotatable about the rotation shaft; and a second push member provided to the second link member, which moves in the direction along the axis of the drive shaft by rotation of the second link member, the zoom device contracts by rotating the first link member so as to move the first push member in the pulling-out direction and rotating the second link member so as to move the second push member in the pulling-out direction, the first push member and the second push member respectively acting on the pulling-out member with a force toward the pulling-out direction.

3. The brake wheel pulling-out aid according to claim 2, wherein the brake wheel pulling-out aid has a link member rotation device provided across the first link member and the second link member, the first link member is rotated so as to move the first push member in the pulling-out direction and the second link member is rotated so as to move the second push member in the pulling-out direction by the link member rotation device being operated.

4. The brake wheel pulling-out aid according to claim 3, wherein the link member rotation device has: a guide member which moves in the direction along the axis of the drive shaft with respect to the zoom device support member; a third link member provided across the second link member and the guide member; and a fourth link member provided across the first link member and the guide member, the first link member is rotated so as to move the first push member in the pulling-out direction and the second link member is rotated so as to move the second push member in the pulling-out direction by the third link member and the fourth link member being operated. ​ The guide member is operated so as to move in a pushing direction along the axis of the drive shaft, thereby the third link member rotates the second link member so as to move the first pushing member in the pulling-out direction, and the fourth link member rotates the first link member so as to move the second pushing member in the pulling-out direction.

5. The brake wheel pulling-out aid according to claim 3, wherein The link member rotating means has a screw member disposed across the first link member and the second link member, The screw member is operated so as to rotate, thereby the screw member rotates the first link member so as to move the first pushing member in the pulling-out direction, and the screw member rotates the second link member so as to move the second pushing member in the pulling-out direction.

6. The brake wheel pulling-out aid according to any one of claims 1 to 5, wherein The scaling means support member has a fixing portion fixed to the drive shaft, The fixing portion restricts the brake wheel from moving in the pulling-out direction in the case where the fixing of the brake wheel to the drive shaft is released.

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