Arrangement structure of elevator pit
By installing a tensioning device and guide rail bridge in the elevator pit, the interference problem between the tensioning device and the car guide rail is solved, and the balanced and stable force and safe operation of the elevator system are achieved.
Patent Information
- Application Number
- CN202520463763.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-17
AI Technical Summary
In elevator systems, the position of the tensioning device and the car guide rails can easily interfere, leading to unstable elevator operation and making it difficult to accurately control the speed and position of the car.
Design an elevator pit layout structure. By setting a tensioning device and a guide rail bridge, the tensioning device is located above the guide rail bridge to avoid interference between structures and ensure that each component is installed in an orderly manner. The counterweight and the bottom of the car are connected by a counterweight rope to achieve a balanced and stable stress state.
This achieves a more balanced and stable force distribution on the elevator system, avoids interference between structures, and ensures the safety and operational stability of the elevator.
Smart Images
Figure CN223836855U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to elevator systems, and in particular to an elevator pit layout structure. Background Technology
[0002] In elevator systems, a counterweight is typically used to reduce the pulling force required by the traction machine. Since the total mass of the elevator car varies with passenger load, the counterweight's mass is difficult to maintain in constant alignment with the total mass of the car. Currently, the counterweight's weight is typically around 40% to 50% of the car's full load weight, thus balancing part of the car's weight and reducing the motor's burden. When the elevator is a high-speed elevator, it generates significant centrifugal force and dynamic loads. Because the difference between the car's mass and the counterweight's mass is uncertain, the overall stress distribution is unstable, making it difficult to precisely control the car's speed and position. To address this, a counterweight rope is installed, connected to the bottom of the car and the bottom of the counterweight, and looping around the tensioning device. This stabilizes the stress on the car, thereby improving the overall stability of the elevator system.
[0003] When designing elevators, the layout needs to be flexible according to space requirements. When the counterweight of a high-speed elevator is set on the side of the elevator, the position of the tensioning device used to tighten the counterweight rope of the high-speed elevator will interfere with the position of the car guide rail. Therefore, a layout structure needs to be designed so that the two structures can coexist. Utility Model Content
[0004] The purpose of this invention is to provide an elevator pit layout structure for avoiding interference between the tensioning device and the car guide rail.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An elevator pit layout structure, comprising:
[0007] The counterweight guide rail includes two single rails arranged opposite to and adjacent to the first side of the pit. The pit has a front corresponding to the elevator door, a back opposite to the front, a first side and a second side connecting the front and the back, and a bottom surface formed by the bottom of the pit. The single rails are arranged vertically and one end is supported on the bottom surface of the pit to constrain the lifting trajectory of the counterweight.
[0008] A tensioning device is used to tension the counterweight rope connected between the bottom of the counterweight and the bottom of the car, and the tensioning device is disposed between the two single rails;
[0009] The guide rail bridge includes two opposing support legs and a bridge surface that is simultaneously supported on the top of the two support legs. The two support legs are respectively located on both sides of the tensioning device and on the side of the counterweight guide rail away from the pit. The bridge surface is located above the tensioning device.
[0010] The car guide rail is used to constrain the lifting trajectory of the car, including a vertically arranged first guide rail and a second guide rail connected to the second side and arranged opposite to the first guide rail. One end of the first guide rail is supported on the bridge surface of the guide rail bridge, and one end of the second guide rail is supported on the bottom surface of the pit.
[0011] Optionally, the arrangement structure further includes transfer plates, with multiple transfer plates sequentially connected between two single tracks, and the transfer plates connected to the side of the counterweight guide rail away from the first side, and the first guide rail connected to each of the transfer plates.
[0012] Optionally, the arrangement structure further includes a counterweight buffer and a car buffer, wherein the top height of the counterweight buffer and the car buffer is higher than the height of the bridge deck, and the top height of the counterweight buffer and the car buffer is equal.
[0013] Optionally, the two counterweight buffers are disposed between the two single rails and arranged along the same straight line as the two single rails. The line connecting the two car buffers is perpendicular to the line connecting the first guide rail and the second guide rail, and passes through the midpoint of the line connecting the first guide rail and the second guide rail.
[0014] Optionally, the tensioning device includes a vertically arranged floating track, a wheel frame slidably connected to the floating track, and two tensioning wheels rotatably connected to the wheel frame. The wheel frame includes a sliding part that engages with the floating track, and the two tensioning wheels are respectively connected to both sides of the sliding part.
[0015] Optionally, the arrangement structure further includes a first sensor and a second sensor, wherein the sensing position of the first sensor is matched with the position of the tensioning wheel when the wheel frame is adjacent to the bridge deck, and the sensing position of the second sensor is matched with the position of the tensioning wheel when the wheel frame is adjacent to the bottom surface of the pit.
[0016] Optionally, each tensioning wheel has a plurality of grooves on its surface, the number of grooves being matched with the number of counterweight ropes, and one end of each counterweight rope being connected to the center of the bottom of the counterweight, extending vertically and passing around the two tensioning wheels in sequence, before extending vertically and connecting to the center of the bottom of the car.
[0017] Optionally, the floating track is formed on the support foot, the wheel frame is slidably connected to the guide rail bridge, and the two tensioning wheels have the same structure.
[0018] Optionally, each of the supporting legs has a floating track formed on its side near the other supporting leg. The wheel frame includes two sliding parts that respectively cooperate with the two floating tracks, and also includes two vertically arranged wheel forks for connecting the tension wheel.
[0019] Optionally, the bottom of the support foot is provided with an adjustable foot pad for leveling the bridge surface.
[0020] The beneficial effects of this utility model are as follows: by setting up a tensioning device and a counterweight rope, the elevator system is subjected to more balanced and stable forces. By setting up a guide rail bridge, the first guide rail is supported above the tensioning device, and the tensioning device is set below the guide rail bridge. This avoids mutual interference between structures while meeting the spatial layout and installation requirements, allowing each component to be installed in an orderly manner in the elevator pit.
[0021] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0022] Figure 1 This is a top view of the elevator pit layout structure shown in Embodiment 1 of this utility model;
[0023] Figure 2 This is a front view of the elevator pit layout structure shown in Embodiment 1 of this utility model;
[0024] Figure 3 This is a schematic diagram showing the connection between the guide rail bridge and the tensioning device in Embodiment 1 of this utility model.
[0025] Legend: 101-Front side, 102-Back side, 103-First side, 104-Second side, 105-Bottom, 106-Counterweight, 107-Car, 1-Counterweight guide rail, 11-Single rail, 12-Guide rail bracket, 13-Transfer plate, 2-Car guide rail, 21-First guide rail, 22-Second guide rail, 3-Guide rail bridge, 31-Support leg, 32-Bridge surface, 33-Adjustable foot pad, 4-Tensioning device, 41-Floating rail, 42-Wheel frame, 421-Sliding part, 422-Wheel fork, 43-Tensioning wheel, 431-Wheel groove, 44-Counterweight rope, 5-Counterweight buffer, 6-Car buffer, 7-First sensor, 8-Second sensor. Detailed Implementation
[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0030] Please see Figure 1 and Figure 2This utility model application protects an elevator pit layout structure, including a counterweight guide rail 1, a tensioning device 4, a guide rail bridge 3, and a car guide rail 2. The pit has a front 101 corresponding to the elevator door, a back 102 opposite to the front 101, a first side 103 and a second side 104 connecting the front 101 and the back 102, and a bottom surface 105 formed at the bottom of the pit. The counterweight guide rail 1 has two vertical single rails 11, each adjacent to the first side 103 of the pit and arranged opposite to each other, for restraining the counterweight 106. The tensioning device 4 is used to tension the counterweight rope 44 connected between the bottom of the counterweight 106 and the bottom of the car 107, and is disposed between the two single rails 11. The guide rail bridge 3 includes two opposing support legs 31 and a bridge surface 32 supporting the tops of the two support legs 31. The two support legs 31 are respectively located on both sides of the tensioning device 4 and on the side of the counterweight guide rail 1 away from the first side 103 of the pit. The bridge surface 32 is located above the tensioning device 4. The car guide rail 2 is used to restrain the car 107 and includes a first guide rail 21 and a second guide rail 22 vertically opposite each other. The second guide rail 22 is connected to the second side 104 and faces the first side 103. The bottom of the first guide rail 21 is supported by the bridge surface 32 of the guide rail bridge 3, and the second guide rail 22 is supported by the bottom surface 105 of the pit.
[0031] By setting up the tensioning device 4 and the counterweight rope 44, the elevator system is subjected to more balanced and stable forces. By setting up the guide rail bridge 3, the first guide rail 21 is supported above the tensioning device 4, and the tensioning device 4 is set below the guide rail bridge 3. This avoids mutual interference between structures while meeting the spatial layout and installation requirements, and allows each component to be installed in an orderly manner in the elevator pit.
[0032] Please refer to the following examples.
[0033] Example 1:
[0034] Please see Figure 1 and Figure 2 The elevator pit layout structure shown in a preferred embodiment of this application includes a counterweight guide rail 1, a tensioning device 4, a guide rail bridge 3, and a car guide rail 2. The pit is rectangular, with the surface of the pit corresponding to the elevator door as the front 101, the surface opposite to the front 101 as the back 102, the two surfaces connecting the front 101 and the back 102 as the first side 103 and the second side 104, and the bottom surface as the bottom 105. In this embodiment, the counterweight 106 is disposed on the side of the car 107 near the first side 103. The bottom surface 105 of the pit is horizontal, the front 101 and the back 102 are both parallel to a first direction, the first side 103 and the second side 104 are both parallel to a second direction, and the first and second directions are perpendicular to each other.
[0035] The counterweight guide rail 1 includes two vertically extending single rails 11 arranged opposite each other. Both single rails 11 are adjacent to the first side 103 and symmetrically arranged along the centerline of the pit. The side of the counterweight guide rail 1 adjacent to the first side 103 is connected to the first side 103 by multiple vertically arranged guide rail supports 12, and multiple transfer plates 13 are connected to the side of the counterweight guide rail 1 away from the first side 103. The multiple transfer plates 13 are horizontally arranged and vertically arranged sequentially, connecting the two counterweight guide rails 1. The thickness of the counterweight guide rail 1 in the first direction is greater than the thickness of the counterweight 106 in the first direction; therefore, when the counterweight 106 is slidably connected to the counterweight guide rail 1, there is a gap between the counterweight 106 and the transfer plates 13, preventing interference.
[0036] The car guide rail 2 includes a vertically arranged first guide rail 21 and a second guide rail 22. One end of the bottom of the second guide rail 22 is supported on the bottom surface 105 of the pit and connected to the second side surface 104 of the pit, with the second guide rail 22 facing the first side surface 103 of the pit. The first guide rail 21 is arranged opposite to the second guide rail 22 and is located on the side of the counterweight guide rail 1 away from the first side surface 103 of the pit. The first guide rail 21 is connected to the middle of each transfer plate 13 and its bottom is supported by the guide rail bridge 3.
[0037] Please see Figure 1 , Figure 2 and Figure 3 The guide rail bridge 3 includes two opposing support legs 31 and a bridge surface 32 supported on top of the two support legs 31. The support legs 31 are rectangular blocks, vertically aligned parallel to a first direction, with adjustable foot pads 33 connected to their bottom ends in the first direction. The bridge surface 32 is a rectangular plate, fixedly connected to and supported by the two support legs 31. Since the bottom surface 105 of the pit typically has low levelness and flatness, the adjustable foot pads 33 are used to adjust the bridge surface 32 to maintain its levelness. The bottom end of the first guide rail 21 is supported on the upper surface of the bridge surface 32.
[0038] The tensioning device 4 includes a vertically arranged floating track 41, a wheel frame 42 slidably connected to the floating track 41, and two tensioning wheels 43 rotatably connected to the wheel frame 42. The floating track 41 is located at the center of the support foot 31 in the first direction and on the side of the support foot 31 near another support frame. A floating track 41 is connected to each of the two support feet 31. The wheel frame 42 has a rectangular frame structure and is arranged along the first direction. The wheel frame 42 includes two symmetrically arranged wheel forks 422 and a sliding part 421 connected to the center of the wheel frame 42. The sliding part 421 is vertically arranged and embedded in the wheel frame 42, with both ends connected to the inner wall of the wheel frame 42. The two sides of the sliding part 421, parallel to the first direction, engage with the floating track 41 and are slidably connected to the floating track 41. The wheel forks 422 are connected below the top edge of the wheel frame 42, located inside the wheel frame 42, and extend vertically downwards. Their bottom ends branch into two forks, which are rotatably connected to the two ends of the central shaft of the tensioning wheels 43. Two forks 422 are symmetrically arranged along the sliding portion 421, and the two tensioning rollers 43 have identical structures. Multiple annular grooves 431 are formed on the surface of the tensioning rollers 43 for accommodating the counterweight ropes 44. One end of the counterweight rope 44 is connected to the bottom of the counterweight 106 along the centerline of the first direction, passes around the two tensioning rollers 43 in sequence, and is then connected to the bottom of the car 107 along the centerline of the first direction. The counterweight ropes 44 are parallel to the first direction. The counterweight ropes 44 between the counterweight 106 and the tensioning rollers 43, and between the car 107 and the tensioning rollers 43, all extend vertically. The counterweight rope 44 between the two tensioning rollers 43 extends horizontally, embedding itself in the grooves 431 when passing over the tensioning rollers 43. In this embodiment, seven counterweight ropes 44 are evenly arranged along the second direction, and the counterweight ropes 44 are connected to the middle of the car 107 and the counterweight 106 along the second direction.
[0039] In this embodiment, the tensioning device 4 is directly installed on the guide rail bridge 3, which helps to simplify the overall structure. The adjustable foot pads 33 can simultaneously adjust the level of the bridge surface 32 and the verticality of the floating track 41, reducing the installation difficulty.
[0040] This embodiment also includes a counterweight buffer 5 and a car buffer 6. Both the counterweight buffer 5 and the car buffer 6 are hydraulic buffers, connected to the bottom surface 105 of the pit and vertically installed. The tops of the counterweight buffer 5 and the car buffer 6 are at the same height and slightly higher than the upper surface of the bridge deck 32, preventing the bottom of the car 107 and the counterweight 106 from impacting the guide rail bridge 3. The two counterweight buffers 5 are positioned between the two single rails 11, on the same straight line as the two single rails 11, and symmetrical about the centerline of the counterweight 106 in the first direction. The line connecting the two car buffers 6 is parallel to the second direction, and the two car buffers 6 are symmetrical about the centerline of the car 107 in the first direction.
[0041] In this embodiment, the arrangement structure also includes a first sensor 7 and a second sensor 8. Both the first sensor 7 and the second sensor 8 are mounted on the support leg 31, with their sensing direction facing the tension wheel 43. When the wheel frame 42 approaches the lower surface of the bridge deck 32, the tension wheel 43 reaches the sensing position of the first sensor 7. When the wheel frame 42 approaches the bottom surface 105 of the pit, the tension wheel 43 reaches the sensing position of the second sensor 8. When either the first sensor 7 or the second sensor 8 senses the tension wheel 43, it indicates that the car 107 is experiencing instability, and the elevator system loses power.
[0042] This utility model, through its layout design, meets the design requirement of placing the counterweight 106 on the side of the car 107, and also has a high level of safety.
[0043] Example 2:
[0044] The only difference between this embodiment and Embodiment 1 is that in this embodiment, the width of the guide rail bridge 3 is matched with the first guide rail 21, and the floating track 41 is fixedly connected to the bottom surface 105 of the pit and is separate from the guide rail bridge 3.
[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A layout structure for an elevator pit, characterized in that, include: The counterweight guide rail (1) includes two single rails (11) arranged opposite to and adjacent to the first side (103) of the pit. The pit has a front (101) corresponding to the elevator door, a back (102) opposite to the front (101), the first side (103) and the second side (104) connecting the front (101) and the back (102), and a bottom surface (105) formed at the bottom of the pit. The single rail (11) is arranged vertically and one end is supported on the bottom surface (105) of the pit to constrain the lifting trajectory of the counterweight (106). Tensioning device (4) for tensioning the counterweight rope (44) connected between the bottom of the counterweight (106) and the bottom of the car (107), the tensioning device (4) being disposed between the two single rails (11); The guide rail bridge (3) includes two opposing support legs (31) and a bridge surface (32) supported on the top of the two support legs (31). The two support legs (31) are respectively located on both sides of the tensioning device (4) and on the side of the counterweight guide rail (1) away from the pit (103). The bridge surface (32) is located above the tensioning device (4). The car guide rail (2) is used to constrain the lifting trajectory of the car (107), including a vertically arranged first guide rail (21) and a second guide rail (22) connected to the second side (104) and arranged opposite to the first guide rail (21). One end of the first guide rail (21) is supported on the bridge surface (32) of the guide rail bridge (3), and one end of the second guide rail (22) is supported on the bottom surface (105) of the pit.
2. The arrangement structure as described in claim 1, characterized in that, It also includes transfer plates (13), a plurality of transfer plates (13) are sequentially connected between two single rails (11), and the transfer plates (13) are connected to the side of the counterweight guide rail (1) away from the first side (103), and the first guide rail (21) is connected to each of the transfer plates (13).
3. The arrangement structure as described in claim 1, characterized in that, It also includes a counterweight buffer (5) and a car buffer (6), the top of which is higher than the height of the bridge deck (32), and the top of which is equal in height.
4. The arrangement structure as described in claim 3, characterized in that, The two counterweight buffers (5) are disposed between the two single rails (11) and are arranged along the same straight line as the two single rails (11). The line connecting the two car buffers (6) is perpendicular to the line connecting the first guide rail (21) and the second guide rail (22) and passes through the midpoint of the line connecting the first guide rail (21) and the second guide rail (22).
5. The arrangement structure as described in claim 1, characterized in that, The tensioning device (4) includes a vertically arranged floating track (41), a wheel frame (42) slidably connected to the floating track (41), and two tensioning wheels (43) rotatably connected to the wheel frame (42). The wheel frame (42) includes a sliding part (421) that cooperates with the floating track (41), and the two tensioning wheels (43) are respectively connected to both sides of the sliding part (421).
6. The arrangement structure as described in claim 5, characterized in that, It also includes a first sensor (7) and a second sensor (8), wherein the sensing position of the first sensor (7) is matched with the position of the tension wheel (43) when the wheel frame (42) is near the bridge surface (32), and the sensing position of the second sensor (8) is matched with the position of the tension wheel (43) when the wheel frame (42) is near the bottom surface (105) of the pit.
7. The arrangement structure as described in claim 5, characterized in that, Each tensioning wheel (43) has a plurality of grooves (431) formed on its surface. The number of grooves (431) is matched with the number of counterweight ropes (44). One end of each counterweight rope (44) is connected to the center of the bottom of the counterweight (106), extends vertically and passes around the two tensioning wheels (43) in sequence, and then extends vertically and is connected to the center of the bottom of the car (107).
8. The arrangement structure as described in claim 5, characterized in that, The floating track (41) is formed on the support foot (31), the wheel frame (42) is slidably connected to the guide rail bridge (3), and the two tensioning wheels (43) have the same structure.
9. The arrangement structure as described in claim 8, characterized in that, Each of the support legs (31) has a floating track (41) formed on the side near the other support leg (31). The wheel frame (42) includes two sliding parts (421) that respectively cooperate with the two floating tracks (41), and also includes two vertically arranged wheel forks (422), which are used to connect the tension wheel (43).
10. The arrangement structure as described in claim 1, characterized in that, The bottom of the support foot (31) is provided with an adjustable foot pad (33) for leveling the bridge surface (32).