Threshold positioning device and threshold installation method

Abstract

The present invention provides a threshold positioning device and a threshold installation method. Provided is a technology that can adjust the position of a threshold more easily than in the past. The threshold positioning device positions the threshold set at the opening of the elevator's lifting passage. The threshold positioning device has a pair of adjustment mechanisms, which have a support arm that supports the threshold in a state where the threshold is placed, a height adjustment portion that adjusts the height of the support arm, and an inclination adjustment portion that adjusts the inclination of the support arm relative to the depth direction of the opening. The pair of adjustment mechanisms are configured to be arranged in a row in the width direction of the opening.

Description

Technical Field

[0001] The invention relates to a threshold positioning device and a threshold installation method. Background Art

[0002] In developed countries such as Japan, North America, and Europe, the reduction in the number of construction workers due to the declining birthrate and aging population has become a problem. This problem is no exception in the elevator installation industry. Therefore, efforts are being made to improve the efficiency and labor saving of construction work so that the same number of construction works can be handled even with a reduced number of workers.

[0003] The installation of elevators includes various operations such as tower measurement, guide rail installation, door and exit installation, tower equipment installation, and car assembly. Among these installation operations, the door and exit installation is the operation of blocking the opening of the elevator passage formed in the building. Therefore, considering the safety of the construction work, it is expected that the door and exit installation can be completed quickly. However, the door and exit installation is not only a repetitive operation for each floor of the building, but also an operation that requires handling long components and heavy objects, so it requires labor and time.

[0004] The entrance and exit of an elevator are mainly composed of a sill, a three-way frame, and a door pocket. The sill is a component that serves as the foundation of the entrance and exit. In the installation of the sill, the position of the sill is adjusted with good accuracy in each direction of the six degrees of freedom, for example, the gap between the elevator car that is raised and lowered in the elevator shaft and the sill of each floor is fixed, and the sill is installed horizontally to make the elevator lobby door move smoothly. Here, the six degrees of freedom refer to the six degrees of freedom consisting of the X-axis direction, the Y-axis direction, the Z-axis direction, the pitch direction, the roll direction, and the yaw direction.

[0005] In the installation operation of the threshold, when the position of the threshold is adjusted with good precision, it is considered to use a device or a clamp that assists in the adjustment operation to improve efficiency and reduce labor. Patent document 1 describes a technology regarding an elevator lobby threshold adjustment clamp and a threshold adjustment method. In the technology described in patent document 1, the subject is to provide an elevator lobby threshold adjustment clamp and a threshold adjustment method that can adjust the long side direction and elevation angle of the threshold of the elevator lobby. In response to this issue, patent document 1 describes the structure of the elevator lobby threshold adjustment clamp, which is characterized in that it has: an adjustment clamp that is fixed to the side of the threshold and has notches formed on the upper and lower adjustment plates, respectively, and adjusts the horizontal direction of the threshold and the elevation angle of the lobby surface according to the positional relationship between the centering line hanging from the top of the elevator lifting channel and the notches of the upper and lower adjustment plates.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Publication No. 2014-28672

[0009] In the existing threshold position adjustment operation, the threshold is temporarily fixed on a bracket that is previously fixed to the wall surface in the lifting passage, and the operator uses a hammer to hit the bracket or the threshold with a piano wire or a level gauge that is plumbly lowered from the top of the lifting passage as a reference, thereby adjusting the posture and position of the threshold. However, in this method, the moving direction, angle, and movement amount of the threshold will change according to the temporary fixing condition of the threshold, the hitting position, hitting angle, and degree of hitting force of the hammer. Therefore, it is difficult for the operator to adjust the position of the threshold as desired, and skilled skills and know-how are required. In addition, for unskilled operators, the threshold will be hit many times with a hammer until the position adjustment of the threshold is completed, and there is a problem that the operation takes a long time.

[0010] Regarding such a problem, the elevator lobby threshold adjustment jig described in Patent Document 1 is only used as an indicator plate for visually confirming the positional relationship between the piano wire hanging from the top of the elevator passage as a centering line and the notches of the upper and lower adjustment pieces of the threshold adjustment jig. Therefore, even when the elevator lobby threshold adjustment jig described in Patent Document 1 is used, skilled skills are required to adjust the position of the threshold. Summary of the invention

[0011] An object of the present invention is to provide a technology that can adjust the position of a door sill more easily than before.

[0012] In order to solve the above-mentioned problems, for example, the following configuration is adopted.

[0013] The present application includes a variety of means for solving the above-mentioned problems. One of them is a threshold positioning device for positioning the threshold of the opening of the elevator shaft. The threshold positioning device has a pair of adjustment mechanisms, which have: a support arm for supporting the threshold in a state where the threshold is placed, a height adjustment part for adjusting the height of the support arm, and an inclination adjustment part for adjusting the inclination of the support arm relative to the depth direction of the opening. The pair of adjustment mechanisms are configured to be arranged in a row in the width direction of the opening.

[0014] Effects of the Invention

[0015] According to the present invention, the position of the door sill can be adjusted more easily than in the past.

[0016] Other problems, structures, and effects than those described above will become clear from the following description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a perspective view showing a state where a threshold is provided at the opening of the hoistway.

[0018] Figure 2 It is a perspective view showing the arrangement of the door sill and the bracket.

[0019] Figure 3 It is an enlarged view showing the structure of the bracket.

[0020] Figure 4 is a top view of the structure showing the threshold.

[0021] Figure 5 It is a perspective view showing the overall structure of the door sill positioning device according to the first embodiment.

[0022] Figure 6 It is a perspective view showing the structure of the adjustment mechanism.

[0023] Figure 7 It is a side view showing the structure of the adjustment mechanism.

[0024] Figure 8 This is a diagram for explaining a mechanism for adjusting the inclination of the support arm by the inclination adjusting unit.

[0025] Fig. 9 This is a diagram showing a state in which the door sill is supported by the support arm of the adjustment mechanism, as seen from obliquely above.

[0026] Fig.10 This is a diagram showing a state in which the door sill is supported by the support arm of the adjustment mechanism, as seen from obliquely below.

[0027] Fig.11 It is a perspective view showing the structure of the control unit.

[0028] Fig.12 It is a perspective view showing the structure of a reference core index member.

[0029] Fig.13 It is a schematic diagram showing a system configuration of the door sill positioning device according to the first embodiment.

[0030] Fig.14 This is a diagram showing the control loop when the manual control mode is used.

[0031] Fig.15 This is a diagram showing a control loop when the automatic level control mode is used.

[0032] Fig.16 This is a flowchart for explaining a door sill installation method using the door sill positioning device according to the first embodiment.

[0033] Fig.17 This is a view of the opening before the threshold is installed, as viewed from the entrance hall side.

[0034] Fig.18 This is a three-dimensional view of the door sill positioning device before the door sill is supported by the support arm, as viewed from the side of the hoistway.

[0035] Fig.19 This is a perspective view showing a state in which the support arm is pulled out to the hoistway side in order to place the door sill on the support arm.

[0036] Fig. 20 This is a diagram showing a door sill positioning device according to a second embodiment as viewed from the hoistway side.

[0037] Fig.21 It is a schematic diagram showing a system configuration of a door sill positioning device according to a second embodiment.

[0038] Description of Reference Numerals

[0039] 1... threshold, 2... bracket, 3... reference core, 4... opening, 5... building floor, 6... lifting channel, 7... opening side, 9... laser line emitter (height detection device), 10... horizontal laser line, 11... wall surface, 14... garbage drop hole, 100, 140A... threshold positioning device, 101, 141L, 141R... adjustment mechanism, 102... support arm, 102c... third arm (arm), 103... height adjustment part, 104... front and rear tilt adjustment part (tilt adjustment part), 105... base plate (base member), 106... horizontal position adjustment part Whole part (arm position adjustment part), 107, 147L, 147R...actuator, 111...support leg, 116...arm position adjustment knob (arm position adjustment mechanism), 117...long hole for arm fixing (arm position adjustment mechanism), 118...long hole for door sill fixing (long hole), 119...temporary door sill fixing part (fixing part), 121a, 142a, 144a...control part, 122...operation part, 123...tilt sensor (tilt detection part), 127...height indicator plate (height detection device), 143, 145...operation knob (operation part), 150...arm support plate (arm position adjustment mechanism) DETAILED DESCRIPTION

[0040] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In this specification and the drawings, elements having substantially the same function and structure are denoted by the same reference numerals, and repeated descriptions are omitted.

[0041] First use Figure 1 To illustrate the coordinate system used in this specification and the accompanying drawings.

[0042] like Figure 1As shown, an opening 4 is formed in the elevator's lifting passage 6. The opening 4 is an opening for forming the entrance and exit of the elevator. The opening 4 is formed in a square shape. Under this premise, the X-axis direction represents the depth direction of the opening 4, the Y-axis direction represents the width direction of the opening 4, and the Z-axis direction represents the height direction of the opening 4. The depth direction of the opening 4 is equivalent to the depth direction (front and back direction) when a person stands on the building floor 5 that serves as the elevator lobby and observes the lifting passage 6, that is, the direction in which people and goods enter and exit. The width direction of the opening 4 is equivalent to the direction (left and right direction) in which the lobby door of the elevator opens and closes. In addition, the roll direction represents the rotation direction around the X-axis, the pitch direction represents the rotation direction around the Y-axis, and the yaw direction represents the rotation direction around the Z-axis. The X-axis direction and the Y-axis direction are equivalent to the two axis directions parallel to the horizontal plane, namely the horizontal two-axis directions, and the Z-axis direction is equivalent to the direction orthogonal to the horizontal plane, namely the vertical direction. In addition, using Figure 1 The definition of the coordinate system described also applies to Figure 1 Other drawings.

[0043] Next, use Figure 1 to Figure 4 To illustrate the setting status and structure of the threshold.

[0044] like Figure 1 As shown, the threshold 1 is set at the opening 4 using a plurality of brackets 2. The opening 4 is formed on each floor of the building. The opening side portions 7 are respectively located on the left and right of the opening 4. The lifting passage 6 is formed on the inner side of the opening 4 as viewed from a person standing on the floor 5 of the building. Two reference cores 3 are arranged in the lifting passage 6. Each reference core 3 is arranged near the wall 11 of the lifting passage 6 in order to indicate a reference position when positioning the threshold 1. The reference core 3 uses a thin wire such as a piano wire with a diameter of about 0.5 mm. The two reference cores 3 are hung vertically from the top to the bottom of the lifting passage 6. The interval between the two reference cores 3 in the Y-axis direction is set to a predetermined interval.

[0045] Figure 2 This is a three-dimensional diagram showing the arrangement of the door sill and the bracket. Figure 3 This is an enlarged view showing the structure of the bracket. Figure 4 is a top view of the structure showing the threshold.

[0046] like Figure 2 As shown, the threshold 1 is fixed to the wall 11 of the lifting channel 6 using multiple brackets 2 (refer to Figure 1 ) or steel frame (not shown). In the present embodiment, as an example, the threshold 1 is fixed to the wall surface 11 of the lift passage 6 using three brackets 2 .

[0047] The brackets 2 are arranged at three locations with a given interval in the width direction of the opening 4. The bracket 2 is composed of two bracket components, namely, a wall-side bracket 2a and a door sill-side bracket 2b. The wall-side bracket 2a is a bracket fixed to the wall surface 11 of the lift passage 6, and the door sill-side bracket 2b is a bracket fixed to the door sill 1. The wall-side bracket 2a is formed in an L shape, and the door sill-side bracket 2b is also formed in an L shape. Moreover, the wall-side bracket 2a and the door sill-side bracket 2b are fastened by two fasteners 12 in a state where they overlap each other slightly.

[0048] The fastener 12 is composed of, for example, bolts, nuts, and washers. Figure 3 As shown in FIG. 1 , two long holes 17 are provided in the sill side bracket 2b. The long holes 17 are formed longitudinally. Fig.10 As shown in FIG. 2 , a fixing hole 23 is provided. The fixing hole 23 is a hole for fixing the sill side bracket 2b of the bracket 2 to the lower surface of the sill 1 using a fastener 24. On the other hand, in the wall side bracket 2a, as shown in FIG. Figure 2 As shown, three long holes 21 and three fixing holes 22 are provided. The long holes 21 and the fixing holes 22 are both formed in a horizontally long shape. The long hole 21 is a hole for fastening the wall side bracket 2a and the door sill side bracket 2b. The fixing hole 22 is a hole for fixing the wall side bracket 2a to the wall surface 11 of the lifting passage 6. The upper and lower two long holes 21 among the three long holes 21 are arranged to overlap with the long holes 17 corresponding thereto respectively. The shaft portion of the fastener 12 is installed to pass through the long hole 17 and the long hole 21. The relative installation position of the wall side bracket 2a and the door sill side bracket 2b can be adjusted in both directions of the long side direction of the long hole 17 and the long side direction of the long hole 21.

[0049] The threshold 1 is a long strip-shaped component. Figure 4 As shown in the figure, two guide grooves 18 and a plurality of trash drop holes 14 are provided. The two guide grooves 18 are formed parallel to each other along the long side direction of the door sill 1. The guide groove 18 is a groove for guiding the movement of the hall door (not shown) for opening and closing the entrance and exit of the elevator. The trash drop holes 14 are provided at a plurality of locations of each guide groove 18. The trash drop holes 14 are holes for making the trash that enters the guide groove 18 fall.

[0050] Two opening lines 13 are drawn on the upper surface of the door sill 1. The opening lines 13 are used when adjusting the position of the door sill 1 in a horizontal plane parallel to the X-axis direction and the Y-axis direction. Specifically, the position of the door sill 1 is adjusted so that the reference core 3 is located on the extension line of each opening line 13. Therefore, the interval between the two opening lines 13 in the long side direction of the door sill 1 is set to match the interval between the two reference cores 3 mentioned above.

[0051] <First Embodiment>

[0052] (Structure of threshold positioning device)

[0053] Next, the structure of the door sill positioning device according to the first embodiment will be described.

[0054] Figure 5 It is a perspective view showing the overall structure of the door sill positioning device according to the first embodiment.

[0055] like Figure 5 As shown, the door sill positioning device 100 mainly includes a pair of adjustment mechanisms 101 and a control component 120 .

[0056] The pair of adjustment mechanisms 101 is a mechanism for adjusting the installation position of the door sill 1. The pair of adjustment mechanisms 101 is a structure that can be arranged in a row in the width direction of the opening 4. The pair of adjustment mechanisms 101 is installed on the opening side portions 7 located on the left and right of the opening 4. The pair of adjustment mechanisms 101 is a structure that is symmetrical when viewed from the X-axis direction and is basically the same structure. The structure of the adjustment mechanism 101 is described in detail below.

[0057] (Adjustment mechanism)

[0058] Figure 6 is a three-dimensional diagram showing the structure of the adjustment mechanism. Figure 7 It is a side view showing the structure of the adjustment mechanism.

[0059] like Figure 6 as well as Figure 7 As shown, the adjustment mechanism 101 includes a support arm 102 , a height adjustment unit 103 , a front-rear tilt adjustment unit 104 , a base plate 105 , and a horizontal position adjustment unit 106 .

[0060] (Supporting arm)

[0061] The support arm 102 is a member that supports the door sill 1 in a state where the door sill 1 is placed. The support arm 102 integrally includes a first arm portion 102a, a second arm portion 102b, and a third arm portion 102c. The first arm portion 102a and the second arm portion 102b are arranged at right angles to each other. The first arm portion 102a and the third arm portion 102c are arranged parallel to each other. In addition, the second arm portion 102b connects one end of the first arm portion 102a and one end of the third arm portion 102c. The first arm portion 102a is formed longer than the third arm portion 102c. When the door sill 1 is supported by the support arm 102, the third arm portion 102c is equivalent to the arm portion that places the door sill 1.

[0062] The first arm portion 102a is provided with an arm fixing long hole 117, and the third arm portion 102c is provided with a door sill fixing long hole 118. The arm fixing long hole 117 is a hole for fixing the support arm 102 to the arm support plate 150. The door sill fixing long hole 118 is a hole for fixing the door sill 1 to the third arm portion 102c. The arm fixing long hole 117 is formed long in the long side direction of the first arm portion 102a, and the door sill fixing long hole 118 is formed long in the long side direction of the third arm portion 102c.

[0063] The support arm 102 is mounted on the arm support plate 150 via the arm position adjustment knob 116. The arm support plate 150 is an L-shaped plate having an arm receiving portion 150a. The arm receiving portion 150a is a portion that receives and supports the first arm portion 102a of the support arm 102 from below. A screw hole (not shown) is formed in the arm receiving portion 150a, and an external thread (not shown) that engages with the screw hole of the arm receiving portion 150a is formed in the arm position adjustment knob 116. The external thread of the arm position adjustment knob 116 engages with the screw hole of the arm receiving portion 150a through the arm fixing long hole 117 of the support arm 102. Therefore, when the arm position adjustment knob 116 is tightened, the first arm portion 102a is fixed to the arm receiving portion 150a. That is, by tightening the arm position adjustment knob 116, the support arm 102 can be fixed to the arm support plate 150. In addition, when the arm position adjustment knob 116 is tightened and loosened, the first arm portion 102a can be moved in the long axis direction of the arm fixing long hole 117. That is, the position of the support arm 102 in the X-axis direction can be adjusted by tightening and loosening the arm position adjustment knob 116. Accordingly, the arm position adjustment mechanism for adjusting the position of the support arm 102 in the depth direction of the opening 4 is composed of the arm fixing long hole 117, the arm support plate 150, and the arm position adjustment knob 116.

[0064] (Height adjustment section)

[0065] The height adjustment unit 103 is a part for adjusting the height of the support arm 102. The height adjustment unit 103 mainly includes an actuator 107, a slide table 108, an actuator power supply 113, a back plate 114, and a pair of guide shafts 115. In this embodiment, as an example, the actuator 107 is composed of an electric linear actuator. The actuator 107 has a rod portion 107a, a housing portion 107b, and a motor portion 107c.

[0066] The rod portion 107a performs telescopic movement following the drive of the motor portion 107c. The motor portion 107c is connected to the upper plate 152 via a coupling member 151. The actuator power supply 113 is mounted on the upper plate 152. The motor portion 107c is electrically connected to the actuator power supply 113 via wiring not shown in the figure, and a structure is formed in which power is supplied to the motor portion 107c from the actuator power supply 113 through the wiring. A mechanism for transmitting the driving force of the motor portion 107c to the rod portion 107a is built into the housing portion 107b. The front end (lower end) of the rod portion 107a is connected to the sliding table 108 via a coupling member 153. The housing portion 107b is fixed to the intermediate plate 156 using a band 154 and a bolt 155. The intermediate plate 156 is fixed to the back plate 114 using bolts not shown in the figure.

[0067] The back plate 114 is a longitudinally long plate. The support legs 111 are mounted on the back plate 114. The support legs 111 are mounted on the back plate 114 using the support leg mounting member 161. The support legs 111 can move in the long side direction of the back plate 114, that is, in the up-down direction. The support legs 111 are used to stabilize the posture of the adjustment mechanism 101 by allowing the deadweight of the door sill positioning device 100 to be carried on the support legs 111 when it is desired to install the base plate 105 from the building floor 5 without contacting the building floor 5 and floating from the building floor 5.

[0068] When the support legs 111 are used, the lower ends of the support legs 111 are brought into contact with the building floor 5. That is, the support legs 111 are provided so as to contact with the building floor 5. Thus, while the adjustment mechanism 101 is supported as a whole by the support legs 111, the base plate 105 is brought into close contact with the opening side portion 7, and the base plate 105 can be fixed to the opening side portion 7 by the clamp 8.

[0069] In addition, the support legs 111 may be installed on the base plate 105 instead of the back plate 114. In addition, when the lower end of the base plate 105 is in contact with the building floor 5, the support legs 111 may not be used. When the support legs 111 are not used, it is not necessary to install the support legs 111 on the back plate 114 or the like. That is, the support legs 111 may be provided as needed.

[0070] The upper end of the back plate 114 is connected to the upper plate 152, and the lower end of the back plate 114 is connected to the lower plate 157. The upper plate 152 and the lower plate 157 are arranged to face each other. The pair of guide shafts 115 are arranged parallel to each other in a state of connecting the upper plate 152 and the lower plate 157. The pair of guide shafts 115 are shafts that guide the movement of the slide table 108.

[0071] In the height adjustment unit 103 having the above-described structure, when the rod 107a is extended and retracted in accordance with the drive of the motor unit 107c, the slide table 108 moves in the height direction (Z-axis direction) while being guided by the guide shaft 115. In addition, the rotation shaft 109 and the arm support plate 150 are connected to the slide table 108. Therefore, when the slide table 108 is moved by driving the actuator 107 in a state where the support arm 102 is mounted on the arm support plate 150, the support arm 102 moves together with the slide table 108. Thus, the height adjustment unit 103 can adjust the height of the support arm 102 by driving the actuator 107.

[0072] (Front and rear tilt adjustment section)

[0073] The front-to-back tilt adjustment unit 104 is equivalent to a tilt adjustment unit that adjusts the tilt of the support arm 102 in the depth direction relative to the opening 4. The tilt of the support arm 102 in the depth direction relative to the opening 4 is the tilt of the support arm 102 around the Y axis, in other words, the tilt of the support arm 102 in the pitch direction. The front-to-back tilt adjustment unit 104 is mounted on the slide table 108. The front-to-back tilt adjustment unit 104 includes a rotation axis 109, an arm support plate 150, a pair of front-to-back tilt adjustment knobs 110, and a knob support plate 159. The rotation axis 109 is an axis parallel to the Y axis direction. The rotation axis 109 is mounted on the slide table 108. The arm support plate 150 is rotatably supported by the rotation axis 109. The pair of front-to-back tilt adjustment knobs 110 are mounted on the knob support plate 159. Each front-to-back tilt adjustment knob 110 has a protrusion 110a protruding upward from the knob support plate 159. The upper end of the protruding portion 110a contacts the arm receiving portion 150a of the arm supporting plate 150 from below. When the front-rear tilt adjustment knob 110 is rotated, the protruding dimension of the protruding portion 110a changes according to the rotation amount and rotation direction.

[0074] In the front-rear tilt adjustment unit 104 having the above-mentioned structure, if the pair of front-rear tilt adjustment knobs 110 are appropriately rotated, the arm support plate 150 rotates around the rotation axis 109 as the center (fulcrum). Figure 8As shown in the figure, the pair of front-to-back tilt adjustment knobs 110 are rotated so that the arm receiving portion 150a of the arm support plate 150 is pushed up by the protruding portion 110a of the left front-to-back tilt adjustment knob 110, and the arm support plate 150 rotates clockwise. In addition, although not shown in the figure, if the pair of front-to-back tilt adjustment knobs 110 are rotated so that the arm receiving portion 150a of the arm support plate 150 is pushed up by the protruding portion 110a of the right front-to-back tilt adjustment knob 110, the arm support plate 150 rotates counterclockwise. Therefore, by appropriately operating the pair of front-to-back tilt adjustment knobs 110 to rotate in a state where the support arm 102 is attached to the arm support plate 150 using the arm position adjustment knob 116, the inclination of the support arm 102 with respect to the depth direction (X-axis direction) of the opening 4 can be adjusted.

[0075] (Base plate)

[0076] The base plate 105 is equivalent to a base member fixed to the opening side portion 7. The base plate 105 is composed of a longitudinally long L-shaped plate. The base plate 105 is installed in a state of being closely attached to the opening side portion 7. Specifically, the base plate 105 is abutted against the opening side portion 7 so that the inner surface 105a (reference Figure 6 ) is in close contact with the corner of the lifting channel 6 side of the opening side portion 7, the base plate 105 and the opening side portion 7 are clamped by the clamping member 8 to install the base plate 105 on the opening side portion 7. Thus, the base plate 105 is installed along the opening side portion 7 longitudinally.

[0077] (Horizontal position adjustment section)

[0078] The horizontal position adjustment unit 106 is equivalent to an arm position adjustment unit that adjusts the position of the support arm 102 in the width direction of the opening 4 (hereinafter also referred to as "horizontal position"). The main purpose of adjusting the position of the support arm 102 in the width direction of the opening 4 is to align the position of the long hole 118 for fixing the threshold of the support arm 102 with the position of the garbage drop hole 14 provided in the threshold 1. The position of the garbage drop hole 14 in the long side direction of the threshold 1 may differ depending on the type and model of the threshold 1. Therefore, when dealing with thresholds 1 of different types and models, the position of the support arm 102 can be appropriately adjusted by the horizontal position adjustment unit 106, thereby coping with the common adjustment mechanism 101. However, the position adjustment of the support arm 102 in the width direction of the opening 4 is sometimes implemented for purposes other than the above-mentioned purposes.

[0079] The horizontal position adjusting parts 106 are arranged in pairs up and down. The upper horizontal position adjusting part 106 is mounted on the upper plate 152, and the lower horizontal position adjusting part 106 is mounted on the lower plate 157. The upper and lower horizontal position adjusting parts 106 are symmetrical in structure when viewed from the Y-axis direction, and basically have the same structure. The structure of the horizontal position adjusting part 106 is described in detail below.

[0080] The horizontal position adjustment section 106 includes a horizontal position adjustment knob 99, a horizontal shaft 112, and a movable member 163. The horizontal position adjustment knob 99 is a knob for adjusting the horizontal position of the support arm 102. The base end of the horizontal shaft 112 is fixed to the base plate 105. The horizontal shaft 112 extends in a direction orthogonal to the long side direction of the base plate 105. The horizontal shaft 112 is an axis for guiding the movement of the movable member 163. An anti-detachment member 164 is installed at the front end of the horizontal shaft 112. The anti-detachment member 164 is a member that limits the moving range of the movable member 163 so that the movable member 163 does not fall off the horizontal shaft 112. As the anti-detachment member 164, a C ring can be used.

[0081] The movable member 163 is a member that is engaged with the horizontal shaft 112 and moves along the horizontal shaft 112. The upper movable member 163 is fixed to the upper plate 152 by two screws 165, and the lower movable member 163 is also fixed to the lower plate 157 by two screws 165. A notch portion 163a is provided in the movable member 163. The horizontal position adjustment knob 99 is mounted on the notch portion 163a of the movable member 163. The horizontal position adjustment knob 99 is provided with an external thread portion (not shown), and the movable member 163 is provided with an internal thread portion (not shown). Then, the horizontal position adjustment knob 99 tightens the horizontal shaft 112 or loosens the tightening by the engagement of the external thread portion and the internal thread portion.

[0082] In the pair of upper and lower horizontal position adjustment parts 106 having the above-mentioned structure, by tightening and loosening the horizontal position adjustment knob 99, the movable member 163 can be moved along the horizontal axis 112. As a result, the back plate 114, the upper side plate 152, the lower side plate 157, the height adjustment part 103, the front and rear tilt adjustment part 104, etc. can be moved integrally with the upper and lower movable members 163. Therefore, the horizontal position of the support arm 102 can be adjusted. In addition, by tightening the horizontal position adjustment knob 99, the horizontal position of the support arm 102 can be fixed.

[0083] Here, use Fig. 9 as well as Fig.10 A method for temporarily fixing the door sill 1 and the support arm 102 will be described below.

[0084] Fig. 9 This is a diagram showing a state where the door sill is supported by the support arm of the adjustment mechanism, as viewed from obliquely above. Fig.10This is a diagram showing a state in which the door sill is supported by the support arm of the adjustment mechanism, as seen from obliquely below.

[0085] like Fig. 9 as well as Fig.10 As shown in FIG. 1 , the threshold 1 is placed on the upper surface of the third arm portion 102c of the support arm 102. In addition, the threshold 1 is temporarily fixed to the support arm 102 by the threshold temporary fixing member 119. The temporary fixing of the threshold 1 is as follows: Figure 1 As shown in the figure, the threshold 1 is fixed to the support arm 102 before the threshold 1 is fixed (formally fixed) to the wall 11 or steel frame of the lifting passage 6 using a plurality of brackets 2. The threshold temporary fixing member 119 is equivalent to a fixing member that fixes the threshold 1 to the third arm portion 102c of the support arm 102 through the garbage drop hole 14 and the threshold fixing long hole 118. The threshold temporary fixing member 119 temporarily fixes the threshold 1 to the support arm 102 by clamping the threshold 1 and the third arm portion 102c from the upper and lower directions and tightening them. The threaded shaft (not shown) of the threshold temporary fixing member 119 passes through the garbage drop hole 14 of the threshold 1 and the threshold fixing long hole 118 of the third arm portion 102c. The garbage drop hole 14 is a long hole with the long side direction of the threshold 1 as the long axis direction, and the threshold fixing long hole 118 is a long hole with the direction along the short side direction of the threshold 1 as the long axis direction. Therefore, when the threshold 1 is placed on the third arm 102c without tightening the threshold temporary fixing piece 119, the threshold 1 can be freely moved in the X-axis direction and the Y-axis direction within the size range of the long hole 14 for dropping garbage and the long hole 118 for fixing the threshold.

[0086] (Control Components)

[0087] Fig.11 It is a perspective view showing the structure of the control unit.

[0088] like Fig.11 As shown, the control unit 120 is a unit that can be attached to and detached from the door sill 1. The control unit 120 includes a control substrate 121, an operating unit 122, a tilt sensor 123, a control power supply 124, a unit base 125, and a height indicator plate 127. The unit base 125 is a plate-shaped member that serves as the base of the control unit 120, and is formed in a U shape when viewed from the Y-axis direction. The control substrate 121, the operating unit 122, the tilt sensor 123, the control power supply 124, and the height indicator plate 127 are mounted on the unit base 125. The unit base 125 is mounted so as to cover the door sill 1 from above. In addition, a stop screw 126 is provided on the unit base 125, and by tightening the stop screw 126, the unit base 125 is fixed to the door sill 1. In addition, by loosening the stop screw 126, the control unit 120 can be removed from the door sill 1.

[0089] The control substrate 121 is a circuit substrate for controlling the driving of the actuators 107 provided in the pair of adjustment mechanisms 101. The control substrate 121 includes a control unit 121a (see Fig.13 ) various electronic components such as CPU and other computing elements for performing functions, connectors for inputting and outputting various signals, and connectors for taking in power. The control substrate 121 is mounted on the assembly base 125 via a plurality of substrate support rods 167. In addition, the control substrate 121 is electrically connected to the control power supply 124 via power supply wiring (not shown). In addition, the control substrate 121 is electrically connected to the operation unit 122, the tilt sensor 123, and the actuator 107 via signal wiring (not shown).

[0090] The operating part 122 is used to operate the actuator 107 of the height adjustment part 103, and has three operating knobs 128a, 128b, and 128c. In addition, the operating part 122 has an upper panel 168a and a lower panel 168b. The upper panel 168a and the lower panel 168b are arranged in a state of being opposed to each other with the substrate 169 interposed therebetween. A gap is provided between the upper panel 168a and the substrate 169 by an upper spacer 171, and a gap is provided between the lower panel 168b and the substrate 169 by a lower spacer 172. In addition, the lower panel 168b is mounted on the upper surface of the component base 125.

[0091] The operating knob 128a is a knob for operating the actuator 107 of the adjustment mechanism 101 located on the left side when the opening 4 is observed from the lifting passage 6 side. The operating knob 128a is set to be rotatable in both directions. Then, if the operator rotates the operating knob 128a, an operation signal corresponding to the rotation direction and rotation amount of the operating knob 128a is sent from the operating knob 128a to the control unit 121a. The control unit 121a controls the actuator 107 of the adjustment mechanism 101 on the left side based on the operation signal from the operating knob 128a. Specifically, the control unit 121a sends a drive signal based on the operation signal received from the operating knob 128a to the actuator 107 of the adjustment mechanism 101 on the left side. As a result, the rod 107a of the actuator 107 of the adjustment mechanism 101 on the left side moves forward and backward following the drive signal sent from the control unit 121a.

[0092] The operating knob 128b is a knob for switching the control mode for controlling the action of a pair of adjustment mechanisms 101. The control mode will be described later. The operating knob 128b is rotatable in both directions. Moreover, the following mechanism is provided: if the operator rotates the operating knob 128b in the first direction (for example, clockwise), the first mode switching signal is sent from the operating knob 128b to the control unit 121a, and the control unit 121a switches the control mode to the automatic horizontal control mode in accordance with the first mode switching signal. In addition, the following mechanism is provided: if the operating knob 128b is rotated in the second direction (for example, counterclockwise), the second mode switching signal is sent from the operating knob 128b to the control unit 121a, and the control unit 121a switches the control mode to the manual control mode in accordance with the second mode switching signal.

[0093] The operating knob 128c is a knob for operating the actuator 107 of the adjustment mechanism 101 located on the right side when the opening 4 is observed from the lifting passage 6 side. The operating knob 128c is arranged to be rotatable in both directions. Moreover, if the operator rotates the operating knob 128c, an operating signal corresponding to the rotation direction and rotation amount of the operating knob 128c is sent from the operating knob 128c to the control unit 121a. The control unit 121a controls the actuator 107 of the adjustment mechanism 101 on the right side based on the operating signal from the operating knob 128c. Specifically, the control unit 121a sends a drive signal based on the operation signal received from the operating knob 128c to the actuator 107 of the adjustment mechanism 101 on the right side. As a result, the rod 107a of the actuator 107 of the adjustment mechanism 101 on the right side moves forward and backward following the drive signal sent from the control unit 121a.

[0094] In addition, the order and arrangement of the operation knobs 128a, 128b, and 128c are not limited to Fig.11 The examples shown can be changed as needed.

[0095] The tilt sensor 123 is equivalent to a tilt detection unit that detects the tilt of the threshold 1 relative to the width direction of the opening 4. The tilt of the threshold 1 relative to the width direction of the opening 4 is the tilt of the threshold 1 around the X-axis, in other words, the tilt of the threshold 1 in the rolling direction. The tilt sensor 123 is a sensor that can detect the tilt angle of the threshold 1 in the rolling direction. The tilt angle of the threshold 1 in the rolling direction becomes zero when the upper surface of the threshold 1 is parallel to the horizontal plane. The tilt sensor 123 is mounted on the upper surface of the substrate 169. When the control unit 120 is mounted on the threshold 1, the upper surface of the substrate 169 is arranged parallel to the upper surface of the threshold 1. The tilt sensor 123 is composed of, for example, a three-axis acceleration sensor. The detection result of the tilt sensor 123 is sent to the control unit 121a. The detection result of the tilt sensor 123 is sent from the tilt sensor 123 to the control unit 121a as a tilt detection signal indicating the tilt angle of the threshold 1 in the rolling direction.

[0096] The control power supply 124 supplies power to the electronic components mounted on the control board 121 , and supplies power to the operation unit 122 and the tilt sensor 123 via the control board 121 .

[0097] The height indicator plate 127 is a member that serves as an indicator when adjusting the height of the threshold 1. The height indicator plate 127 is mounted on the assembly base 125 using an L-shaped plate 175 and a supporting member 176. The L-shaped plate 175 is mounted on the upper surface of the assembly base 125. The height indicator plate 127 is mounted on the L-shaped plate 175 in a state of being vertically erected from the upper surface of the assembly base 125. The height indicator plate 127 is given a scale (not shown) so that when the control assembly 120 is mounted on the threshold 1, the height dimension with the upper surface of the threshold 1 as a reference (zero) can be visually confirmed. The scale is attached to the main surface of the height indicator plate 127. The main surface of the height indicator plate 127 is irradiated with the horizontal laser line 10 ( Fig.17 Reference) surface.

[0098] The height indicator plate 127 can measure the distance from the upper surface of the threshold 1 supported by the support arm 102 to the horizontal laser line 10. In addition, the laser radiator 9 and the height indicator plate 127 constitute a height detection device for detecting the setting height of the threshold 1. The supporting member 176 is a member that supports the lower end of the height indicator plate 127. A position adjustment knob 177 is installed on the mounting portion of the height indicator plate 127. The position adjustment knob 177 is a knob for adjusting the position of the height indicator plate 127 in the Z-axis direction. By having the position adjustment knob 177, the position of the height indicator plate 127 can be adjusted so that the horizontal laser line 10 emitted from the laser radiator 9 is irradiated to the height indicator plate 127. The height indicator plate 127 can also be installed on the threshold 1 separately from the control component 120.

[0099] Fig.12 It is a perspective view showing the structure of a reference core index member.

[0100] like Fig.12 As shown in the figure, the reference core indicator member 130 is a member installed on the threshold 1 to locate the threshold 1 in accordance with the position of the reference core 3. Two reference core indicator members 130 are installed on each threshold 1. The two reference core indicator members 130 are symmetrical in structure when viewed from the X-axis direction, and are basically the same structure. The structure of the reference core indicator member 130 is described in detail below.

[0101] The reference core indicator member 130 is embedded in the upper surface side of the threshold 1 so that it can be fixed to the threshold 1 by a set screw 131 across the guide groove 18 on one side and the side surface 1a of the threshold 1. The reference core indicator member 130 is provided with: a notch portion 132 for aligning the reference core 3; a window portion 133 for aligning the opening score line 13; and a through hole 134. The notch portion 132 serves as an indicator portion for aligning the position of the threshold 1 with the position of the reference core 3 as a reference. The window portion 133 is composed of a long hole. The long hole constituting the window portion 133 is arranged in a direction orthogonal to the long side direction of the threshold 1. When the reference core indicator member 130 is installed on the threshold 1, the operator visually confirms the position of the opening score line 13 through the window portion 133, and adjusts the installation position of the reference core indicator member 130 so that the opening score line 13 is located at the center of the width direction of the window portion 133 (the short axis direction of the long hole). The through hole 134 is used to attach a rope, chain, etc. for preventing the reference core indicator member 130 from accidentally falling to the bottom of the lifting channel 6 during the reference core indicator member 130 being attached to and detached from the door sill 1 .

[0102] By aligning the two reference core indicator members 130 having the above structure with the positions of the opening lines 13 corresponding thereto and installing them on the door sill 1, the corners of the notch portions 132 in each reference core indicator member 130 become indicator positions to be aligned with the reference core 3. Fig.12 As shown, by adjusting the position of the door sill 1 so that the reference core 3 contacts the corner of the notch 132 , the door sill 1 can be positioned in the horizontal plane.

[0103] Fig.13 It is a schematic diagram showing a system configuration of the door sill positioning device according to the first embodiment.

[0104] In this specification, for the convenience of explanation, the adjustment mechanism 101 and its components located on the left side when observing the opening 4 from the lifting channel 6 side are respectively marked with the figure mark "L", and the adjustment mechanism 101 and its components located on the right side are respectively marked with the figure mark "R".

[0105] like Fig.13 As shown in FIG. 1 , in the control unit 120, the operation signal and the mode switching signal are input to the control unit 121a from the operation unit 122, and the tilt detection signal is input to the control unit 121a from the tilt sensor 123. In addition, the control unit 121a gives the drive signal to the actuator 107L of the left adjustment mechanism 101L, and also gives the drive signal to the actuator 107R of the right adjustment mechanism 101R. That is, the control unit 121a gives the drive signal to the left and right actuators 107L and 107R separately.

[0106] In addition, an encoder 129L is provided in the adjustment mechanism 101L on the left side, and an encoder 129R is provided in the adjustment mechanism 101R on the right side. The encoder 129L is a sensor that detects the displacement of the rod when the rod 107a of the actuator 107L is moved forward or backward, and outputs a displacement detection signal as a detection result to the control unit 121a. Similarly, the encoder 129R is a sensor that detects the displacement of the rod when the rod 107a of the actuator 107R is moved forward or backward, and outputs a displacement detection signal as a detection result to the control unit 121a. When the control unit 121a gives a driving signal to the actuator 107L, it determines whether the rod 107a of the actuator 107L has moved to the target position based on the displacement detection signal from the encoder 129L. Similarly, when the control unit 121a gives a driving signal to the actuator 107R, it determines whether the rod 107a of the actuator 107R has moved to the target position based on the displacement detection signal from the encoder 129R. That is, in this embodiment, feedback control is adopted as a method of controlling the left and right actuators 107L and 107R. In addition, the communication between the left and right adjustment mechanisms 101L and 101R and the control unit 120 can be achieved by either wired or wireless.

[0107] Next, the control modes of the door sill positioning device 100 are described. The control modes include a manual control mode and an automatic level control mode.

[0108] Fig.14 This is a diagram showing the control loop when the manual control mode is used.

[0109] The manual control mode is a mode for independently controlling the left and right adjustment mechanisms 101L and 101R. Specifically, when an operation signal is sent from the operation knob 128a to the control unit 121a, a drive signal based on the operation signal is sent from the control unit 121a to the actuator 107R. At this time, a displacement detection signal related to the displacement amount of the rod of the actuator 107R is sent from the encoder 129R to the control unit 121a, and the control unit 121a controls the operation of the actuator 107R based on the displacement detection signal. Similarly, when an operation signal is sent from the operation knob 128c to the control unit 121a, a drive signal based on the operation signal is sent from the control unit 121a to the actuator 107L. At this time, a displacement detection signal related to the displacement amount of the rod of the actuator 107L is sent from the encoder 129L to the control unit 121a, and the control unit 121a controls the operation of the actuator 107L based on the displacement detection signal.

[0110] Fig.15 This is a diagram showing a control loop when the automatic level control mode is used.

[0111] The automatic level control mode is a mode in which one of the left and right adjustment mechanisms 101L and 101R is controlled as the master side (active side) and the other is controlled as the slave side (driven side). In this embodiment, as an example, the right adjustment mechanism 101R is the master side and the left adjustment mechanism 101L is the slave side.

[0112] In the automatic level control mode, as for the adjustment mechanism 101R on the right side, which is the master side, the control unit 121a controls the operation of the actuator 107R in accordance with the operation signal sent from the operation knob 128a, as in the case of the manual control mode described above. On the other hand, as for the adjustment mechanism 101L on the left side, which is the slave side, the control unit 121a controls the operation of the actuator 107L based on the tilt detection signal sent from the tilt sensor 123. Specifically, the tilt angle of the door sill 1 in the rolling direction is detected by the tilt sensor 123, and the tilt detection signal as the detection result is taken into the control unit 121a. Then, the control unit 121a sends a drive signal to the actuator 107L of the adjustment mechanism 101L on the left side so that the tilt angle of the door sill 1 indicated by the tilt detection signal becomes 0 degrees. As a result, the door sill 1 can always be maintained in a horizontal state when viewed from the X-axis direction. In addition, the tilt angle of the door sill 1 indicated by the tilt detection signal becomes 0 degrees when the door sill 1 is horizontal when viewed from the X-axis direction.

[0113] (Threshold installation method)

[0114] Next, refer to Fig.16 The sill installation method using the sill positioning device involved in the first embodiment is described with reference to a flowchart.

[0115] First, the operator Fig.17 As shown, a finishing line 16 is drawn down by a predetermined dimension from a pre-drawn ink line (escape ink, braided line) 15 (step S1). Fig.17 This is a view of the opening 4 before the threshold is installed, viewed from the hallway side. The offset ink line 15 is a line drawn horizontally on the wall next to the opening 4, and is usually drawn about 1m above the floor surface after construction is completed. The so-called floor surface after construction is a floor surface formed by laying flooring materials on the building floor 5 of concrete or the like. In this case, the operator draws a finish line 16 horizontally 1m below the offset ink line 15. The position of the finish line 16 indicates the position of the height of the upper surface of the threshold 1 that should be aligned in the Z-axis direction.

[0116] Next, the operator Fig.17 As shown in FIG. 1 , the laser radiator 9 is placed on the building floor 5 in front of the opening 4 so that the horizontal laser line 10 is irradiated toward the opening 4 (step S2). After that, the operator measures the distance H between the finished line 16 in the Z-axis direction and the horizontal laser line 10 with a ruler or the like, and records the measurement result on a memo paper, a portable terminal, or the like (step S3). The distance H measured by the operator is used when adjusting the height of the threshold 1.

[0117] Next, the operator will Figure 2 The threshold 1 with three brackets 2 installed as shown is taken into the lifting passage 6 (step S4). Each bracket 2 is installed at a position that does not hinder the positioning operation of the threshold 1. In addition, a fixed foothold or a work floor that can be lifted and moved is provided in the lifting passage 6.

[0118] Next, the operator sets the pair of adjustment mechanisms 101 of the door sill positioning device 100 (step S5). Fig.18 As shown in the figure, the base plate 105 is fixed to the left and right opening side portions 7 by the clamping members 8, respectively, so that a pair of adjustment mechanisms 101 are set at the opening side portions 7 corresponding thereto. In addition, the operator uses the position adjustment function of the horizontal position adjustment portion 106 to pull the height adjustment portion 103 toward the center of the opening portion 4 until the movable member 163 contacts the anti-slip member 164, so that the support arm 102 of the adjustment mechanism 101 does not contact the reference core 3.

[0119] Next, the operator places the threshold 1 taken in step S4 on the third arm portion 102c of the support arm 102 (step S6). Fig.19As shown in the figure, the arm position adjustment knob 116 is temporarily loosened, and the support arm 102 is pulled out to the side of the lifting passage 6. If the support arm 102 is pulled out in this way, a space 26 can be ensured between the third arm portion 102c of the support arm 102 and the opening portion 4. Therefore, it is easy to place the threshold 1 on the third arm portion 102c of the threshold 1. After placing the threshold 1 on the support arm 102, the operator returns the support arm 102 pulled out as described above to its original position. In addition, the operator Fig. 9 as well as Fig.10 As shown in the figure, the threshold 1 is temporarily mounted on the support arm 102 using the threshold temporary fixing member 119. At this time, the operator passes the threaded shaft (not shown) of the threshold temporary fixing member 119 through the garbage drop hole 14 of the threshold 1 and the threshold fixing long hole 118 of the third arm portion 102c to install the threshold temporary fixing member 119. In addition, the operator loosely fixes the threshold temporary fixing member 119 to a certain extent with a slight play so that the threshold 1 can be moved on the third arm portion 102c.

[0120] Next, the operator sets the control assembly 120 on the upper surface of the threshold 1 (step S7). The above completes the setting of the threshold positioning device 100 ( Figure 5 Reference). After that, proceed to the positioning operation of the threshold 1.

[0121] First, the operator adjusts the inclination of the support arm 102 in the depth direction of the opening 4 by the front and rear inclination adjustment unit 104 (step S8). Specifically, the operator places a level on the upper surface of the door sill 1, and while confirming the position of the bubble of the level, the two front and rear inclination adjustment knobs 110 are appropriately rotated. Then, the operator adjusts the rotation amount of the front and rear inclination adjustment knobs 110 so that the inclination angle of the support arm 102 in the depth direction of the opening 4 becomes zero. This adjustment operation is performed in parallel in a pair of adjustment mechanisms 101.

[0122] Next, after the operator turns on the power supplies 113 and 124 of the door sill positioning device 100, he operates the operating knob 128b on the operating unit 122 to enable the automatic level control mode (step S9). Fig.15 As described above, the control unit 121a controls the operation of the actuator 107L based on the tilt detection signal from the tilt sensor 123. Therefore, the door sill 1 is horizontally supported by the left and right support arms 102 when viewed from the X-axis direction.

[0123] Next, the operator operates the operating knob 128a on the operating unit 122 to operate the left and right height adjustment units 103, thereby adjusting the height of the threshold 1 (step S10). At this time, the operator first determines the distance by which the horizontal laser line 10 irradiated from the laser radiator 9 to the height indicator plate 127 deviates from the upper surface of the threshold 1 by reading the scale attached to the height indicator plate 127. Next, the operator compares the distance measured using the height indicator plate 127 with the previously recorded distance L (reference Fig.17 ) is compared, and the operation knob 128a is operated so that the difference in their distances becomes zero. Thus, in the height direction of the opening 4, the upper surface of the door sill 1 supported by the support arm 102 can be aligned with the finish line 16 (reference Fig.17 In addition, since the control mode becomes the automatic level control mode, the height of the threshold 1 can be adjusted by maintaining the threshold 1 in a horizontal state as viewed from the X-axis direction.

[0124] When the height of the door sill 1 is determined in this manner, the operator operates the operation knob 128b to disable (OFF) the automatic level control mode (step S11). As a result, the operations of the actuators 107L and 107R are both stopped.

[0125] Through the above-described positioning operation of the threshold 1, the tilt adjustment of the threshold 1 in the pitch direction, the tilt adjustment of the threshold 1 in the roll direction, and the height adjustment of the threshold 1 are completed. In this way, at the stage where the positioning operation of the threshold 1 is completed, the threshold 1 is in a state of being horizontally supported by the left and right support arms 102. In addition, the upper surfaces of the third arm portions 102c of the left and right support arms 102 are arranged on the same horizontal plane. Therefore, in the next step, even if the threshold 1 is moved on the left and right third arm portions 102c, there will be no confusion in the above-mentioned tilt adjustment and height adjustment of the threshold 1.

[0126] Next, the operator adjusts the position of the threshold 1 on the horizontal plane (step S12). Figure 5 as well as Fig.12 As shown in the figure, a reference core indicator member 130 is installed at a given position of the door sill 1 (on the left and right opening lines 13) as an indicator for adjusting the position of the door sill 1. Next, the operator moves the door sill 1 supported by the left and right support arms 102 on the third arm 102c appropriately to make the notch 132 of the left and right reference core indicator members 130 contact the corresponding reference cores 3. In this way, the position of the door sill 1 in the width direction (X-axis direction) of the opening 4, the position of the door sill 1 in the depth direction (Y-axis direction) of the opening 4, and the inclination of the door sill 1 in the yaw direction can be adjusted.

[0127] The above completes the positioning of threshold 1.

[0128] Next, the operator temporarily fixes the threshold 1 to the support arm 102 by tightening the threshold temporary fixing member 119 so that the threshold 1 positioned as described above will not deviate (step S13 ). Thereafter, the process proceeds to the fixing operation of the threshold 1 .

[0129] First, the operator loosens the fasteners 12 mounted on the brackets 2 and the fasteners 24 mounting the brackets 2 on the door sill 1 as appropriate, so that the wall-side brackets 2a of each bracket 2 are in close contact with the wall surface 11 of the lift passage 6, and fixes the wall-side brackets 2a to the wall surface 11 by anchor bolts or welding (step S14). In addition, when the wall surface 11 is fixed to the steel frame via the brackets 2, the wall-side brackets 2a are fixed in close contact with the steel frame.

[0130] Next, the operator tightens the fasteners 12 and 24 to fix the sill side bracket 2b to the sill 1 and fixes the sill side bracket 2b to the wall side bracket 2a (step S15). The sill fixing operation is completed as described above.

[0131] Thereafter, the operator removes the door sill positioning device 100 from the door sill 1 (step S15). The removal operation of the door sill positioning device 100 is performed, for example, through the following steps.

[0132] First, the operator removes the temporary door sill fastener 119. Next, the operator loosens the arm position adjustment knob 116. Next, the operator removes the clamping member 8 while holding the base plate 105 with his hand. Next, the operator removes the door sill 1 and the opening side 7 from the adjustment mechanism 101 while being careful not to let the support arm 102 strongly collide with the door sill 1. Through the above process, the operator removes the left and right adjustment mechanisms 101 in turn. Next, the operator removes the control assembly 120 from the door sill 1.

[0133] The above constitutes a series of processes of the method for installing the door sill 1 .

[0134] As described above, the threshold positioning device 100 according to the first embodiment includes a pair of adjustment mechanisms 101. In addition, each adjustment mechanism 101 includes: a support arm 102 that supports the threshold 1 in a state where the threshold 1 is placed; a height adjustment portion 103 that adjusts the height of the support arm 102; and a front-rear tilt adjustment portion 104 that adjusts the tilt of the support arm 102 relative to the depth direction of the opening 4. Therefore, the operator who performs the threshold installation operation can adjust the position of the threshold 1 using the adjustment functions of the height adjustment portion 103 and the front-rear tilt adjustment portion 104. As a result, the position adjustment of the threshold 1 can be performed more simply than in the past. As a result, the time required for the threshold installation operation can be shortened. In addition, at the stage of fixing the bracket 2 to the wall surface 11 of the lifting passage 6, since the upper, lower, left and right positions of the threshold 1 have been determined, the bracket 2 can be fixed at the place where it is pushed against the wall surface 11. Therefore, the marking operation for the installation position of the bracket 2, which was required in the past, is no longer required. Furthermore, in the door sill positioning device 100 according to the first embodiment, the pair of adjustment mechanisms 101 are configured to be arranged side by side in the width direction of the opening 4. Thus, even when a groove for passing rainwater is formed on the building floor 5, for example, the door sill positioning device 100 can be used without being affected by the uneven state of the building floor 5.

[0135] In the first embodiment, the pair of adjustment mechanisms 101 are attached to the left and right opening side portions 7. Therefore, there is an advantage that the adjustment mechanisms 101 are unlikely to be an obstruction from the perspective of the operator entering and exiting the opening 4.

[0136] Furthermore, in the first embodiment, each of the pair of adjustment mechanisms 101 includes a horizontal position adjustment unit 106 for adjusting the position of the support arm 102 in the width direction of the opening 4. Therefore, the position of the support arm 102 can be adjusted so that the position of the long hole 118 for fixing the door sill of the support arm 102 is aligned with the position of the garbage drop hole 14 of the door sill 1.

[0137] Furthermore, in the first embodiment, the height adjustment unit 103 includes the actuator 107 for changing the height of the support arm 102, and the door sill positioning device 100 further includes: an inclination sensor 123 for detecting the inclination of the door sill 1 with respect to the width direction of the opening 4; and a control unit 121a for controlling the actuator 107 based on the detection result of the inclination sensor 123. Thus, even if a level gauge or the like is not provided on the upper surface of the door sill 1, the height of the door sill 1 can be adjusted while maintaining the door sill 1 in a horizontal posture.

[0138] Furthermore, in the first embodiment, the height detection device includes: a laser radiator 9 that emits a horizontal laser line 10; and a height indicator plate 127 that is irradiated with the horizontal laser line 10 emitted from the laser radiator 9 and can measure the distance from the upper surface of the door sill 1 supported by the support arm 102 to the horizontal laser line 10. Thus, the height of the door sill 1 can be adjusted by the height adjustment unit 103 while the height of the door sill 1 is confirmed using the height indicator plate 127.

[0139] In the first embodiment, each of the pair of adjustment mechanisms 101 includes an arm position adjustment mechanism (the arm fixing long hole 117, the arm support plate 150, and the arm position adjustment knob 116) for adjusting the position of the support arm 102 in the depth direction of the opening 4. Thus, the position of the support arm 102 can be adjusted so that the door sill 1 can be easily placed on the support arm 102.

[0140] In addition, the threshold positioning device 100 according to the first embodiment includes a threshold temporary fixing member 119 that fixes the threshold 1 to the third arm portion 102c by passing through the trash drop hole 14 of the threshold 1 and the threshold fixing long hole 118 of the support arm 102. This can prevent the threshold 1 from falling off from the support arm 102 during the positioning operation. In addition, the position deviation of the threshold 1 after the positioning is completed can be suppressed.

[0141] Furthermore, in the first embodiment, each of the pair of adjustment mechanisms 101 includes: a base plate 105 fixed to the opening side portion 7; and a support leg 111 provided in contact with the building floor 5. Thus, even when the base plate 105 is installed to float from the building floor 5, the adjustment mechanism 101 can be easily installed. Furthermore, after the adjustment mechanism 101 is installed, the posture of the adjustment mechanism 101 can be stabilized.

[0142] The door sill positioning device 100 according to the first embodiment includes an operation unit 122 for operating the actuator 107 of the height adjustment unit 103 and a control unit 121a for controlling the actuator 107 based on an operation signal from the operation unit 122. Thus, it is no longer necessary to manually adjust the height of the door sill 1.

[0143] In the threshold installation method according to the first embodiment, after the threshold 1 is positioned using the threshold positioning device 100, the threshold 1 is fixed to the wall surface 11 of the building using the bracket 2. Thus, the threshold 1 can be positioned without causing positional interference between the threshold 1 and the bracket 2.

[0144] <Second Embodiment>

[0145] Fig. 20 This is a diagram showing a door sill positioning device according to a second embodiment as viewed from the hoistway side.

[0146] The door sill positioning device 140A involved in the second embodiment includes a pair of adjustment mechanisms 141L and 141R. Compared with the pair of adjustment mechanisms 101 described above, the pair of adjustment mechanisms 141L and 141R have the same mechanism except that they include control boxes 142 and 144 and operating knobs 143 and 145. Therefore, detailed descriptions related to each adjustment mechanism 141L and 141R are omitted. In addition, the operating knobs 143 and 145 function as operating parts.

[0147] The threshold positioning device 140A according to the second embodiment is different from the threshold positioning device 100 according to the first embodiment in that the control assembly 120 is not provided on the upper surface of the threshold 1. Instead, a control box 142 and an operating knob 143 are installed in the left adjustment mechanism 141L, and a control box 144 and an operating knob 145 are installed in the right adjustment mechanism 141. Fig. 20 Although not shown, for example, a control unit for controlling an actuator included in the left adjustment mechanism 141L is built into the control box 142, and a control unit for controlling an actuator included in the right adjustment mechanism 141R is built into the control box 144.

[0148] Fig.21 It is a schematic diagram showing a system configuration of a door sill positioning device according to a second embodiment.

[0149] like Fig.21 As shown, the adjustment mechanism 141L on the left and the adjustment mechanism 141R on the right become independent system structures. Specifically, the adjustment mechanism 141L on the left has a control unit 142a built into the above-mentioned control box 142. The control unit 142a controls the actuator 147L based on the operation signal from the operation knob 143. The power supply 113L supplies power to the control unit 142a, the actuator 147L, and the encoder 148L respectively. On the other hand, the adjustment mechanism 141R on the right has a control unit 144a built into the above-mentioned control box 144. The control unit 144a controls the actuator 147R based on the operation signal from the operation knob 145. The power supply 113R supplies power to the control unit 144a, the actuator 147R, and the encoder 148R respectively.

[0150] Here, in the threshold positioning device 100 according to the first embodiment, the tilt sensor 123 is provided in the control unit 120 provided on the threshold 1, but the threshold positioning device 140A according to the second embodiment does not include the tilt sensor 123. Therefore, when adjusting the tilt of the threshold 1 in the rolling direction, the operator sets a level on the upper surface of the threshold 1 and operates the left and right operating knobs 143 and 145 while visually confirming the position of the bubble of the level.

[0151] Thus, the door sill positioning device 140A according to the second embodiment is a structure in which the control unit 120 is not provided on the upper surface of the door sill 1. Therefore, in the door sill positioning device 100 according to the first embodiment, when the control unit 120 and the left and right adjustment mechanisms 101 communicate by wire, it is necessary to wire back, but in the door sill positioning device 140A according to the second embodiment, such wiring is not required. Therefore, according to the door sill positioning device 140A according to the second embodiment, the installation and handling of the device become simple.

[0152] <Modifications, etc.>

[0153] In addition, the present invention is not limited to the above-mentioned embodiments, and includes various variations. For example, in the above-mentioned embodiments, the contents of the present invention are described in detail in order to be easily understood, but the present invention is not necessarily limited to all the structures described in the above-mentioned embodiments. In addition, a part of the structure of a certain embodiment can be replaced with the structure of other embodiments. In addition, the structure of other embodiments can be added to the structure of a certain embodiment. In addition, a part of the structure of each embodiment can be deleted, or other structures can be added, or replaced with other structures.

[0154] For example, in the first embodiment, the electric actuator 107 is used in the height adjustment part 103 of the adjustment mechanism 101, but it can also be replaced by manual operation. In addition, the height adjustment part 103 can be a structure in which the slide table 108 is moved up and down by a ball screw with an adjustment knob. In addition, in the first embodiment, as the structure of the front-back tilt adjustment part 104, it is a structure in which the two front-back tilt adjustment knobs 110 are rotated by the manual operation of the operator to rotate the arm support plate 150 around the rotation axis 109, but it can also be a structure in which the front-back tilt adjustment part 104 is operated electrically.

[0155] In addition, the long side dimension of the arm fixing slot 117 of the support arm 102 can be made larger than Figure 6 The length shown is long, and the movable range of the support arm 102 relative to the X-axis direction is expanded. When the long hole 117 for arm fixing is extended in this way, the support arm 102 can be pushed to the hall side. As a result, since the support arm 102 can be withdrawn from the lifting passage 6, there is no obstacle between the opening 4 and the reference core 3. Therefore, the operation of inserting the door sill 1 between the opening 4 and the reference core 3 is easy.

[0156] In addition, in the above-mentioned first embodiment, one base plate 105 is fixed to the opening side portion 7 by one clamping piece 8, but it is not limited to this. One base plate 105 can also be fixed to the opening side portion 7 by multiple (for example, two) clamping pieces 8.

Claims

1. A threshold positioning device for positioning a threshold provided at an opening of an elevator hoistway, wherein the threshold positioning device is characterized by: a pair of adjustment mechanisms, each having a support arm for supporting the door sill in a state where the door sill is placed, a height adjustment unit for adjusting the height of the support arm, and an inclination adjustment unit for adjusting the inclination of the support arm relative to the depth direction of the opening; The pair of adjustment mechanisms are configured to be arranged side by side in the width direction of the opening. The height adjustment unit includes an actuator for changing the height of the support arm. The threshold positioning device comprises: an inclination detection unit that detects an inclination of the door sill relative to a width direction of the opening; and A control unit controls the actuator based on the detection result of the tilt detection unit.

2. A threshold positioning device for positioning a threshold provided at an opening of an elevator hoistway, wherein the threshold positioning device is characterized by comprising: a pair of adjustment mechanisms, each having a support arm for supporting the door sill in a state where the door sill is placed, a height adjustment unit for adjusting the height of the support arm, and an inclination adjustment unit for adjusting the inclination of the support arm relative to the depth direction of the opening; The pair of adjustment mechanisms are configured to be arranged side by side in the width direction of the opening. The threshold positioning device comprises: a height detection device, which detects the setting height of the threshold, The height detection device comprises: A laser line emitter that emits a horizontal laser line; and A height indicator plate is irradiated with a horizontal laser line emitted from the laser radiator, and can measure the distance from the upper surface of the door sill supported by the support arm to the horizontal laser line.

3. A threshold positioning device for positioning a threshold provided at an opening of an elevator hoistway, wherein the threshold positioning device is characterized by comprising: a pair of adjustment mechanisms, each having a support arm for supporting the door sill in a state where the door sill is placed, a height adjustment unit for adjusting the height of the support arm, and an inclination adjustment unit for adjusting the inclination of the support arm relative to the depth direction of the opening; The pair of adjustment mechanisms are configured to be arranged side by side in the width direction of the opening. The threshold has a hole for dropping garbage. The support arm has a long hole in the arm portion on which the door sill is placed. The threshold positioning device comprises: A fixing member passes through the garbage dropping hole and the long hole to fix the threshold to the arm.

4. A threshold positioning device for positioning a threshold provided at an opening of an elevator hoistway, wherein the threshold positioning device is characterized by comprising: a pair of adjustment mechanisms, each having a support arm for supporting the door sill in a state where the door sill is placed, a height adjustment unit for adjusting the height of the support arm, and an inclination adjustment unit for adjusting the inclination of the support arm relative to the depth direction of the opening; The pair of adjustment mechanisms are configured to be arranged side by side in the width direction of the opening. The height adjustment unit includes an actuator for changing the height of the support arm. The threshold positioning device comprises: an operating portion for operating the actuator of the height adjustment portion; and A control section controls the actuator based on an operation signal from the operation section.

5. The door sill positioning device according to any one of claims 1 to 4, characterized in that: The pair of adjustment mechanisms are mounted on opening side portions located on the left and right sides of the opening portion.

6. The door sill positioning device according to any one of claims 1 to 4, characterized in that: Each of the pair of adjustment mechanisms includes an arm position adjustment portion that adjusts a position of the support arm in a width direction of the opening.

7. The door sill positioning device according to any one of claims 1 to 4, characterized in that: Each of the pair of adjustment mechanisms includes an arm position adjustment mechanism that adjusts the position of the support arm in the depth direction of the opening.

8. The door sill positioning device according to any one of claims 1 to 4, characterized in that: The pair of adjustment mechanisms each comprises: a base member fixed to the opening side portions located on the left and right sides of the opening portion; and A support leg is configured to engage a building floor.

9. A threshold installation method, characterized in that: Using the door sill positioning device according to any one of claims 1 to 4, After the threshold is positioned by using the threshold positioning device, the threshold is fixed to the wall surface or steel frame of the building by using a bracket.

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