Machine-room-less elevator
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- MITSUBISHI ELECTRIC CORP
- Filing Date
- 2017-12-20
- Publication Date
- 2026-07-23
AI Technical Summary
In machine-room-less elevators, the installation of a counterweight speed controller at a position aligned with the counterweight when it is at the uppermost position necessitates widening the front dimension of the duct, which is inefficient in terms of space utilization.
The counterweight speed controller is positioned higher than the counterweight's position when it rises, with at least a portion of it arranged in the width direction of the counterweight, identical to the first counterweight guide rail, and perpendicular to the suspension body between the drive pulley and counterweight suspension pulley, optimizing space usage within the shaft.
This arrangement suppresses the expansion of the shaft's plan dimensions by efficiently utilizing the available space, allowing for the installation of the counterweight speed controller without requiring additional space next to the hoisting machine, and improves maintainability by reducing the height of the controller.
Smart Images
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Abstract
Description
[0001] The present invention relates to a machine-roomless elevator in which a counterweight speed control, which detects when the speed of a counterweight has reached an overspeed, is installed within a shaft. TECHNICAL BACKGROUND
[0002] In conventional elevator systems, a speed control is located, in a view from directly above, between a cabin and a counterweight. The speed control is positioned in line with the counterweight when the counterweight is moved to its uppermost section (see, for example, patent literature 1). CITATION LIST PATENT LITERATURE [Patent Literature 1]
[0003] Japanese Disclosure Document No. 2007-62948 (Gazette) ( Fig. 4 and Fig. 5) PRESENTATION OF THE INVENTION; TASK TO BE SOLVED BY THE INVENTION
[0004] In ordinary machine-roomless elevators, the installation of a counterweight speed control may be necessary. A counterweight speed control is a speed control that detects whether the speed of the counterweight has reached an overspeed. For this purpose, the counterweight speed control is located, in a view from directly above, on or near the counterweight. However, if the speed control is located in a position in line with the counterweight when the counterweight is moved to a top position, as described in patent literature 1, it becomes necessary to widen a front dimension of the shaft.
[0005] The present invention aims to solve the above problems and it is an objective of the present invention to provide a machine-roomless elevator that more efficiently utilizes an expansion of the planar dimensions of a shaft by using a space within the shaft to arrange a counterweight velocity control. MEANS OF SOLVING THE TASK
[0006] A machine-roomless elevator according to the present invention comprises: a lifting machine arranged in an upper section within a shaft, wherein the lifting machine has a drive pulley; a suspension body guided around the drive pulley; a cabin suspended by the suspension body on a first side of the drive pulley; a counterweight suspended by the suspension body on a second side of the drive pulley; a first and a second counterweight guide rail arranged inside the shaft, the first and second counterweight guide rails guiding an ascent and a descent of the counterweight; a counterweight suspension disc arranged on the counterweight, wherein the suspension body is guided around the counterweight suspension disc; and a counterweight speed control that detects whether the speed of the counterweight reaches an overspeed, wherein: the lifting machine is positioned directly above the counterweight; the first counterweight guide rail is positioned closer to a corner section of the shaft than the second counterweight guide rail; the counterweight speed control is located higher than a position of the counterweight when the cabin descends to a bottom section of the shaft and the counterweight rises; and In a view from directly above, at least one section of the counterweight speed control is arranged in a lateral direction of the counterweight at an identical position as the first counterweight guide rail and in a direction perpendicular to the lateral direction of the counterweight at an identical position as a section of the suspension body between the drive pulley and the counterweight suspension pulley. EFFECTS OF THE INVENTION
[0007] In the machine-roomless elevator according to the present invention, the counterweight speed control is arranged higher than a position of the counterweight as it ascends. At least one section of the counterweight speed control is arranged, in a view from directly above in a width direction of the counterweight, at an identical position to the first counterweight guide rail, and in a direction perpendicular to the width direction of the counterweight, at an identical position to a section of the suspension body between the drive pulley and the counterweight suspension pulley. Therefore, an increase in the flat dimensions of the shaft can be avoided by more efficiently utilizing space within the shaft to accommodate the counterweight speed control. List of characters Fig. Figure 1 is a side view showing part of a machine-roomless elevator according to embodiment 1 of the present invention; Fig. 2 is a cross-section along line II-II in Fig. 1; and Fig. 3 is a cross-section along line III-III in Fig. 1. DESCRIPTION OF EXECUTION FORMS
[0008] A preferred embodiment of the present invention will now be described with reference to the drawings. Design 1
[0009] Fig. Figure 1 is a side view showing part of a machine-roomless elevator according to embodiment 1 of the present invention. Fig. 2 is a cross-section along line II-II in Fig. 1. Fig. 3 is a cross-section line III-III in Fig. 1. Furthermore, Fig. 1 a view line II in Fig. 2.
[0010] The figures include a cabin 2and a counterweight 3 Arranged within a shaft 1. A lifting zone for the counterweight. 3 is in a view of an entry / exit next to a lifting zone for the cabin 2 arranged. The counterweight 3 It has an elongated shape horizontally.
[0011] A first cabin guide rail 4 , a second cabin guide rail 5 , a first counterweight guide rail 6 and a second counterweight guide rail 7 are inside the shaft 1 installed. The first and second cabin guide rails 4 and 5 lead to an ascent and a descent of the cabin 2 The first and second counterweight guide rails 6 and 7 lead to a rise and a fall of the counterweight 3 .
[0012] The first cabin guide rail 4is in a view of the entry / exit at a counterweight 3 opposite side of the cabin 2 arranged. The second cabin guide rail 5 is in a view of the entry / exit on an identical side of the cabin 2 like the counterweight 3 arranged. The first and second cabin guide rails 4 and 5 are in one depth direction of the cabin 2 arranged in identical positions.
[0013] The first and second counterweight guide rails 6 and 7 are in the depth direction of the cabin 2 on an identical side as the second cabin guide rail 5 arranged. In this example, the first and second counterweight guide rails are 6 and 7 in the depth direction of the cabin 2 positioned further back than the second cabin guide rail 5 .
[0014] The first counterweight guide rail 6 is in the depth direction of the cabin 2 positioned further back than the second counterweight guide rail 7 The first counterweight guide rail 6 is closer to a corner section of the shaft 1 arranged as the second counterweight guide rail 7 .
[0015] The second counterweight guide rail 7 is closer to the second cabin guide rail 5 arranged as the first counterweight guide rail 6 .
[0016] A cabin track center line, which is a straight line that forms the center of the first cabin guide rail. 4 and a center of the second cabin guide rail 5 connecting is in a view from directly above parallel to a width direction of the cabin 2A counterweight rail centerline, which is a straight line that defines the center of the first counterweight guide rail. 6 and a center of the second counterweight guide rail 7 connecting is in a view from directly above, perpendicular to the cabin rail center line.
[0017] The first counterweight guide rail 6 is in a lateral direction of the counterweight 3 arranged on one side. The second counterweight guide rail 7 is in the lateral direction of the counterweight 3 arranged on a second side. The lateral direction of the counterweight. 3 is a direction that is parallel to the counterweight rail center line.
[0018] The first cabin guide rail 4 is by means of several initial brackets 8 Attached to a shaft wall. The first counterweight guide rail 6 is by means of several second brackets9 Attached to a shaft wall. The second cabin guide rail 5 and the second counterweight guide rail 7 are attached to a shaft wall.
[0019] A machine base 11 is located in an upper section within the shaft 1 installed. The machine base 11 is out Fig. 2 omitted. The machine base 11 is on the second cabin guide rail 5 and the first counterweight guide rail 6 attached.
[0020] A lower surface of the machine base 11 touches an upper end surface of the second counterweight guide rail 7 A load at the machine base 11 This is achieved through the second cabin guide rail 5 , the first counterweight guide rail 6 and the second counterweight guide rail 7 worn.
[0021] A lifting machine12 is at the machine base 11 arranged. The lifting machine 12 a drive pulley 13 , a lifting machine motor 14 , a lifting machine brake 15 and foot sections 16 up. The lifting machine motor 14 the drive pulley rotates 13 The lifting machine brake 15 maintains a stationary state of the drive pulley 13 The foot sections 16 are so at the machine base 11 attached so that they have several damping elements arranged in between. 17 exhibit.
[0022] When the lifting machine 12 A thin-type lifting machine is used. A thin-type lifting machine is a lifting machine in which an axial dimension is smaller than a dimension in a direction perpendicular to the axial direction. The lifting machine 12 is directly above the counterweight 3 arranged.
[0023] The drive pulley 13 is in a view from directly above on one side of the lifting machine motor 14 near the cabin 2 arranged. Rotating shafts of the drive pulley 13 and the lifting machine motor 14 are arranged horizontally so that they are parallel to the width direction of the cabin 2 are.
[0024] A suspension body 18 is around the drive pulley 13 guided. Several ropes or several straps are used as the suspension body. 18 used. The cabin 2 is from the suspension body 18 on a first side of the drive pulley 13 suspended. The counterweight 3 is from the suspension body 18 on a second side of the drive pulley 13 suspended. The cabin 2 and the counterweight 3 will be inside the shaft 1 by rotating the drive pulley 13raised and lowered.
[0025] The suspension body 18 It has a first end section and a second end section. The first end section is connected to a first rope attachment device (not shown). The first rope attachment device is guided by the first cabin guide rail. 4 at an upper position within the shaft 1 The second end section is connected to a second rope attachment device (not shown). The second rope attachment device is supported by the machine base. 11 worn.
[0026] A first cabin suspension disc 19 and a second cabin suspension disc 20 are located on a lower section of the cabin 2 arranged. The first and second cabin suspension discs 19 and 20 are arranged so that they are separated from each other in the width direction of the cabin 2 are spaced apart.
[0027] The first cabin suspension disc 19 is in a view from the entry / exit on one side near the first cabin guide rail 4 arranged. The second cabin suspension disc 20 is in a view from the entry / exit on one side near the second cabin guide rail 5 arranged.
[0028] Swivel shafts of the first and second cabin suspension disc 19 and 20 are arranged horizontally so that they are parallel to the depth direction of the cabin 2 are. The first and second cabin suspension discs 19 and 20 are thus in identical positions in the depth direction of the cabin 2 arranged so that they are further back than the first and second cabin guide rails 4 and 5 .
[0029] A counterweight suspension disc 21 is on an upper section of the counterweight 3arranged. A rotating shaft of the counterweight suspension disc 21 is arranged horizontally so that it is relative to the lateral direction of the counterweight 3 is inclined.
[0030] The suspension body 18 is successively from the first end section around the first cabin suspension disc 19 , the second cabin suspension disc 20 , the drive pulley 13 and the counterweight suspension disc 21 guided. In other words, the cabin 2 and the counterweight 3 through the suspension body 18 using a two-to-one ( 2 :1)-rope method suspended.
[0031] A control panel 22 , which the lifting machine 12 The controls are located on an upper section within the shaft. 1 installed. The control panel 22 is in a view from directly above on an identical side of the cabin 2arranged like the counterweight 3 The tax panel 22 is in the depth direction of the cabin 2 positioned further forward than the second cabin guide rail 5 .
[0032] A cabin speed control 23 and a counterweight speed control 24 are located in an upper section within the shaft 1 arranged. The cabin speed control 23 detected when a cabin speed 2 has reached an overspeed. The counterweight speed control 24 detects whether the speed of the counterweight 3 has reached an overspeed.
[0033] A cabin safety device (not shown) is located on a lower section of the cabin. 2 The cabin safety device engages the first and second cabin guide rails. 4 and 5, in order to make the cabin 2 performs a safety stop. The cabin speed control 23 is connected to the cabin safety device by means of a cabin speed control cable (not shown). The cabin speed control 23 activates the cabin safety device when the cabin speed 2 has reached an overspeed.
[0034] A counterweight safety device 25 is located on a lower section of the counterweight 3 The counterweight safety device engages the first and second counterweight guide rails. 6 and 7 , in order to cause the counterweight 3 performs a safety stop.
[0035] The cabin speed control 23 is in a view from directly above between the cabin 2and arranged on a shaft wall. The cabin speed control 23 is in a view from directly above on the opposite side from the counterweight 3 the cabin 2 arranged. The cabin speed control 23 is in the depth direction of the cabin 2 positioned further forward than the first cabin guide rail 4 .
[0036] In Fig. 1 are counterweight positions 3 and the counterweight suspension disc 21 , when the cabin 2 with an estimated maximum speed to a bottom section of the shaft 1 descends and the counterweight 3 rising, represented by dash-dotted lines. The counterweight velocity control. 24 is higher than the position of the counterweight 3arranged when the counterweight rises. In particular, the counterweight velocity control. 24 positioned higher than the upper end of a frame body of the counterweight 3 , when the counterweight 3 rises.
[0037] At least one section of the counterweight velocity control 24 is arranged so that it is connected to the counterweight suspension disc 21 is aligned when the counterweight 3 rises.
[0038] At least one section of the counterweight velocity control 24 is in a view from directly above between the first counterweight guide rail 6 and the cabin 2 at an identical position with the first counterweight guide rail 6 in the lateral direction of the counterweight 3 , that is, in Fig. 2 arranged in a vertical direction.
[0039] At least one section of the counterweight velocity control 24 In a view from directly above, in a direction perpendicular to the width direction of the counterweight, it is in an identical position to a section of the suspension body. 18 between the drive pulley 13 and the counterweight suspension disc 21 arranged.
[0040] The counterweight speed control 24 is lower than the lifting machine 12 arranged. The lifting machine 12 In a view from directly above, it partially overlaps with the counterweight velocity control. 24 In this example, one foot section overlaps. 16 the lifting machine 12 partially with counterweight velocity control 24 , as in Fig. 2 is shown.
[0041] The counterweight speed control 24features a counterweight speed control disc 24a and a rope trap (not shown). A counterweight speed control rope. 26 is around the counterweight speed control disc 24a guided.
[0042] The counterweight speed control rope 26 is equipped with the counterweight safety device 25 connected in such a way that it forms a loop inside the shaft 1 is installed. A tension disc 27 is in a lower section of the shaft 1 arranged. The counterweight speed control rope 26 is around the tension disc 27 guided.
[0043] If the counterweight 3 As it rises and descends, the counterweight speed control rope moves 26 in a circle. The counterweight speed control disc 24aIt therefore rotates at a speed that matches the speed of movement of the counterweight. 3 corresponds.
[0044] If a downward velocity of the counterweight 3 When an overspeed is reached, the counterweight speed control rope is activated. 26 gripped by the rope trap, causing a circular movement of the counterweight speed control rope. 26 is stopped. The counterweight safety device 25 This activates and the counterweight 3 performs an emergency stop.
[0045] In a machine-room-less elevator of this type, the counterweight speed control 24 higher than the position of the counterweight 3 arranged when the counterweight rises. At least one section of the counterweight velocity control. 24 is between the first counterweight guide rail 6 and the cabin2 in an identical position as the first counterweight guide rail 6 in the lateral direction of the counterweight 3 arranged and is in an identical position to a section of the suspension body when viewed from directly above. 18 between the drive pulley 13 and the counterweight suspension disc 21 in a direction perpendicular to the lateral direction of the counterweight 3 is arranged. Therefore, a widening of the flat dimensions of the shaft is possible. 1 by using space within the shaft more efficiently 1 suppressed to control the counterweight velocity 24 to order.
[0046] The lifting machine 12 In a view from directly above, it partially overlaps with the counterweight velocity control. 24Therefore, even if there is no installation space for the counterweight speed control 24 next to the lifting machine 12 There is an installation space that can be secured.
[0047] At least one section of the counterweight velocity control 24 is arranged so that it is connected to the counterweight suspension disc 21 is aligned when the counterweight rises. Therefore, the height of the counterweight speed control can be adjusted. 24 This reduces maintenance requirements.
[0048] Furthermore, the counterweight can 3 alternatively in the depth direction of the cabin 2 further forward than the second cabin guide rail 5 be arranged.
[0049] The first and second cabin suspension disc 19 and 20 can alternatively be located on an upper section of the cabin 2 be arranged.
[0050] Additionally, the first and second cabin suspension discs can be 19 and 20 alternatively, it can be arranged so that the suspension body 18 the floor or the upper part of the cabin 2 diagonally crosses.
[0051] Furthermore, the lifting zone of the counterweight can 3 in a view from the entry / exit, alternatively behind the lifting zone of the cabin 2 be. Reference symbol list 1 shaft; 2 cabins; 3 Counterweight; 6 first counterweight guide rail; 7 second counterweight guide rail; 12 lifting machine; 13 Drive pulley; 18 suspension bodies; 21 Counterweight suspension disc; 24 Counterweight speed control QUOTES INCLUDED IN THE DESCRIPTION
[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature
[0000] JP 2007062948
[0003]
Claims
[1] Machine-roomless elevator, comprising: a lifting machine arranged in an upper section within a shaft, wherein the lifting machine has a drive pulley; a suspension body that is guided around the drive pulley; a cabin suspended by the suspension body on a first side of the drive pulley; a counterweight suspended by the suspension body on a second side of the drive pulley; a first and a second counterweight guide rail arranged inside the shaft, the first and second counterweight guide rails guiding an ascent and a descent of the counterweight; a counterweight suspension disc arranged on the counterweight, wherein the suspension body is guided around the counterweight suspension disc; and a counterweight speed control that detects whether the speed of the counterweight reaches an overspeed, wherein: the lifting machine is positioned directly above the counterweight; the first counterweight guide rail is positioned closer to a corner section of the shaft than the second counterweight guide rail; the counterweight speed control is located higher than a position of the counterweight when the cabin descends to a bottom section of the shaft and the counterweight rises; and In a view from directly above, at least one section of the counterweight speed control is arranged in a lateral direction of the counterweight at an identical position as the first counterweight guide rail and in a direction perpendicular to the lateral direction of the counterweight at an identical position as a section of the suspension body between the drive pulley and the counterweight suspension pulley. [2] Machine-roomless elevator according to claim 1, wherein: the counterweight speed control is located further down than the lifting machine; and The lifting machine is partially overlapped with the counterweight speed control in a view from directly above. [3] Machine-roomless elevator according to claim 1 or 2, wherein the counterweight suspension disc is arranged on an upper section of the counterweight; and at least one section of the counterweight speed control is arranged such that it has the same height as the counterweight suspension disc when the counterweight rises.