Inclined elevator speed limiting system

Abstract

The utility model relates to an elevator, in particular to an inclined elevator speed limiting system which comprises a speed limiting main machine, a speed limiting rope, an orientation assembly and a tensioning assembly, the speed limiting rope winds around the speed limiting main machine, the orientation assembly and the tensioning assembly, and the two ends of the speed limiting rope are connected to the two ends of an elevator car base respectively to form a closed annular structure. The orientation assembly is connected to the two ends of the inclined truss which is arranged in an inclined mode, so that part of the speed limiting rope is parallel to the inclined truss, the tensioning assembly is arranged below the speed limiting main machine and comprises a tensioning wheel and a tensioning balance weight, the tensioning wheel is connected to the top of the tensioning balance weight, and the speed limiting rope winds around the tensioning wheel. And the tensioning assembly is arranged below the speed limiting main machine, so that the tensioning assembly is conveniently protected, the aging phenomenon caused by external environment erosion is reduced, and the safety of the inclined elevator is improved.

Description

Technical Field

[0001] The utility model relates to an elevator, in particular to a speed limiting system for an inclined elevator. Background Art

[0002] An inclined elevator is a type of transportation vehicle whose moving direction has an angle with the horizontal plane. It has the advantage of being able to go directly from the starting point to the destination. It has been used in a variety of scenarios such as movement between floors and mountain roads.

[0003] At present, inclined elevators usually adopt a structure similar to that of conventional longitudinal elevators. However, since inclined elevators do not have the shaft structure of conventional longitudinal elevators, their running tracks and other components are usually exposed to the outside world, resulting in a lack of protection measures for their safety protection devices, which is not conducive to the safe operation of the elevator. Utility Model Content

[0004] The utility model aims to provide a speed limiting system which can improve the safety of an inclined elevator.

[0005] In order to achieve the above object, the utility model provides the following technical solutions:

[0006] A speed limiting system for an inclined elevator comprises a speed limiting main unit, a speed limiting rope, a directional assembly and a tensioning assembly, wherein the speed limiting rope passes around the speed limiting main unit, the directional assembly and the tensioning assembly, and the two ends of the speed limiting rope are respectively connected to the two ends of a car base to form a closed ring structure, the directional assembly is connected to the two ends of an inclined truss so that part of the speed limiting rope is parallel to the inclined truss, the tensioning assembly is arranged below the speed limiting main unit, the tensioning assembly comprises a tensioning wheel and a tensioning counterweight, the tensioning wheel is connected to the top of the tensioning counterweight, and the speed limiting rope passes around the tensioning wheel.

[0007] Optionally, the tensioning assembly further includes a tensioning bracket disposed below the speed limiting host, the tensioning bracket includes a vertically disposed counterweight slide rail, and the tensioning counterweight is slidably connected to the counterweight slide rail.

[0008] Optionally, the directional assembly includes a return bending wheel and a changing wheel group, the changing wheel group is connected to the higher end of the inclined truss, and the return bending wheel is connected to the lower end of the inclined truss. The speed limiting rope passing through the speed limiting main machine extends in a vertical downward direction to reach the changing wheel group. After leaving the changing wheel group, the speed limiting rope bypasses the return bending wheel, passes through the changing wheel group again, and extends in a vertical downward direction to reach the tensioning assembly.

[0009] Optionally, the directional assembly further includes a guide wheel bracket, the direction-changing wheel group includes a plurality of upper guide wheels and lower guide wheels detachably connected to the guide wheel bracket, the upper guide wheel is arranged between the speed limiting main engine and the return bending wheel, and the lower guide wheel is arranged between the return bending wheel and the tensioning assembly.

[0010] Optionally, after leaving the speed limiting main machine, the speed limiting rope passes under one of the upper guide wheels and then passes over the top of another upper guide wheel. After leaving the return bending wheel, the speed limiting rope passes over the tops of multiple lower guide wheels in sequence.

[0011] Optionally, the speed limiting host includes a speed limiting wheel, a first centrifugal hammer and a brake switch. The speed limiting rope passes around the speed limiting wheel, and the speed limiting wheel rotates with the displacement of the speed limiting rope. When the speed of the speed limiting wheel reaches a first preset speed, the first centrifugal hammer triggers the brake switch, and the brake switch is electrically connected to the traction motor of the elevator.

[0012] Optionally, the speed limiting host further includes a rope press and a second centrifugal hammer, wherein when the rotation speed of the speed limiting wheel reaches a second preset speed, the second centrifugal hammer triggers the rope press, and the rope press clamps the speed limiting rope between the speed limiting wheel and the rope press.

[0013] Optionally, the inclined elevator speed limiting system also includes a safety clamp, which includes a clamp seat, a clamp body and a trigger device. The clamp seat is connected to the lower end of the car base, the clamp body is connected to the clamp seat, and the trigger device is connected to the clamp body and to the speed limiting rope. When the tension applied to the speed limiting rope is greater than a preset tension, the trigger device drives the clamp body to be clamped in a controllable manner, thereby constraining the freedom of the car base relative to the inclined truss.

[0014] The beneficial effect of the utility model is that by arranging the tensioning assembly directly below the speed limiting main unit, it is convenient to build an elevator machine room that separates the tensioning assembly from the external environment, which helps to extend the service life of the speed limiting system and improve the safety of the inclined elevator.

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of an elevator speed limiting system shown in Embodiment 1 of the present utility model;

[0017] Figure 2 This is a schematic structural diagram of the safety clamp shown in the first embodiment of the utility model.

[0018] Legend: 101- elevator car, 102- car base, 1- speed limiting main unit, 11- speed limiting wheel, 2- speed limiting rope, 31- return bending wheel, 32- direction changing wheel group, 321- guide wheel bracket, 322- first upper guide wheel, 323- second upper guide wheel, 324- first lower guide wheel, 325- second lower guide wheel, 4- tensioning assembly, 41- tensioning wheel, 42- tensioning counterweight, 43- tensioning bracket, 5- lifting assembly, 51- lifting rope, 52- extension device, 6- safety clamp, 61- trigger device, 62- clamp seat, 621- track block, 63- clamp body, 631- sliding block. DETAILED DESCRIPTION

[0019] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] See also Figure 1The speed limiting system of the inclined elevator to be protected by the utility model application comprises a speed limiting mainframe 1, a speed limiting rope 2, a directional assembly and a tensioning assembly 4. The speed limiting rope 2 passes through the speed limiting mainframe 1, the directional assembly and the tensioning assembly 4 and the two ends are respectively connected to the two ends of the car base 102, so that the speed limiting rope 2 and the car base 102 form a closed ring structure together. The directional assembly is connected to the two ends of the inclined truss, and the part of the speed limiting rope 2 passing through the directional assembly is parallel to the inclined truss, so that the speed limiting rope 2 can transmit the moving speed of the car base 102 to the speed limiting mainframe 1. The tensioning assembly 4 is arranged below the speed limiting mainframe 1, and comprises a tensioning wheel 41 and a tensioning counterweight 42. The speed limiting rope 2 passes through the bottom of the tensioning wheel 41, and the tensioning wheel 41 is connected to the top of the tensioning counterweight 42, so that the speed limiting rope 2 is kept in a tensioned state under the action of the gravity of the tensioning counterweight 42. Disposing the tensioning assembly 4 below the speed limiting main engine 1 helps to accommodate and protect the tensioning assembly 4 in the hoistway or the machine room, which helps to improve the safety of the inclined elevator.

[0024] In some embodiments, the tensioning assembly 4 also includes a tensioning bracket 43, which is arranged below the speed limit host 1, and includes a vertically arranged counterweight slide rail. The tensioning counterweight 42 is slidably connected to the counterweight slide rail. The counterweight slide rail constrains the sliding direction of the tensioning counterweight 42, which helps to improve the stability of the tensioning assembly 4.

[0025] In some embodiments, the directional assembly is composed of a return bend wheel 31 and a direction-changing wheel set 32, the direction-changing wheel set 32 ​​is connected to the higher end of the oblique truss, and the return bend wheel 31 is connected to the lower end of the oblique truss. After passing through the speed limiting main machine 1, the speed limit rope 2 extends in a vertical downward direction to reach the direction-changing wheel set 32, and after leaving the direction-changing wheel set 32 ​​and bypassing the return bend wheel 31, it passes through the direction-changing wheel set 32 ​​again, and extends in a vertical downward direction to reach the tensioning assembly 4. By making the speed limit rope 2 between the direction-changing wheel set 32 ​​and the tensioning wheel 41 in a vertical state, it helps to reduce the tension of the tensioning wheel 41 on the speed limit rope 2, thereby reducing the burden of the speed limit rope 2, improving safety and extending the service life of the speed limit rope 2.

[0026] In some embodiments, the directional assembly further includes a guide wheel bracket 321, and the direction-changing wheel group 32 includes a plurality of upper guide wheels and lower guide wheels detachably connected to the guide wheel bracket 321, the upper guide wheels are arranged between the speed limiting host 1 and the return bend wheel 31, and the lower guide wheels are arranged between the return bend wheel 31 and the tensioning assembly 4. The provision of the guide wheel bracket 321 helps to improve the integrity of the direction-changing wheel group 32, and facilitates the disassembly and replacement of the guide wheels, which helps to improve the fault tolerance of the system, thereby extending the service life of the directional assembly.

[0027] Please refer to the following examples for details.

[0028] Embodiment 1:

[0029] The speed limiting system of an inclined elevator shown in a preferred embodiment of the present application includes a speed limiting main unit 1, a speed limiting rope 2, a directional assembly and a tensioning assembly 4. The inclined elevator in this embodiment moves between a top platform with a higher height and a bottom platform with a lower height along an inclined truss. The inclined elevator includes an inclined truss connected between the top platform and the bottom platform, an elevator car 101 slidably connected to the inclined truss, a power system driving the elevator car 101 to slide along the inclined truss, and an elevator machine room arranged on the top platform. The bottom of the elevator machine room in this embodiment sinks to the top platform to form a vertical longitudinal shaft, and the internal structure of the longitudinal shaft is protected by the elevator machine room. The structures of the inclined truss, the elevator car 101 and the power system in this embodiment are all prior art, so they are not repeated here. The part of the structure where the elevator car 101 is slidably connected to the inclined truss is the car base 102, and the top of the car base 102 is a horizontal platform, which is convenient for improving the practicality of the inclined elevator.

[0030] The speed limiting host 1 is arranged at the top inside the elevator room, the tensioning assembly 4 is arranged directly below the speed limiting host 1, the directional assembly includes a return bending wheel 31 and a change-direction wheel group 32, wherein the change-direction wheel group 32 is arranged inside the elevator room and connected to the higher end of the inclined truss, the return bending wheel 31 is vertically arranged at the lower end of the inclined truss and parallel to the inclined truss, the speed limiting rope 2 bypasses the speed limiting host 1, the speed limiting rope 2, the directional assembly and the tensioning assembly 4, and the two ends are respectively connected to the two ends of the car base 102 to form a closed loop and maintain a tensioned state.

[0031] The speed limiting main engine 1 includes a speed limiting wheel 11. The speed limiting rope 2 passes over the speed limiting wheel 11 from above and has a high sliding friction with the speed limiting wheel 11, so as to convert the moving speed of the car base 102 into the rotation speed of the speed limiting wheel 11.

[0032] The tensioning assembly 4 includes a tensioning wheel 41, a tensioning counterweight 42 and a tensioning bracket 43. The tensioning bracket 43 is fixedly arranged at the bottom of the longitudinal shaft, and includes two counterweight guide rails arranged opposite to each other. The tensioning counterweight 42 is slidably connected to the counterweight guide rail, so that the tensioning counterweight 42 can slide freely in the vertical direction along the counterweight guide rail. The tensioning wheel 41 is connected to the top of the tensioning counterweight 42, and the tensioning rope passes around the tensioning wheel 41 from the bottom of the tensioning wheel 41 after leaving the speed limiting wheel 11, so that the tensioning rope remains in a tensioned state under the action of the tensioning counterweight 42. The part of the speed limiting rope 2 connected between the tensioning wheel 41 and the speed limiting wheel 11 is in a vertical state, which can effectively reduce the tension on the speed limiting rope 2, thereby increasing the service life of the speed limiting rope 2.

[0033] The direction-changing wheel group 32 includes a guide wheel bracket 321, an upper guide wheel and a lower guide wheel. The guide wheel bracket 321 is vertically arranged and parallel to the oblique truss. The guide wheel bracket 321 is fixedly connected to the inside of the elevator machine room and is connected to the higher end of the oblique truss. The upper guide wheel and the lower guide wheel are both detachably connected to the guide wheel bracket 321 by bolts, and the upper guide wheel and the lower guide wheel are both arranged in the same vertical plane as the return wheel 31. In this embodiment, two upper guide wheels are included, namely a first upper guide wheel 322 and a second upper guide wheel 323. After the speed limiting rope 2 leaves the speed limiting wheel 11, it extends vertically downward to the side of the first upper guide wheel 322 close to the speed limiting wheel 11 and bypasses from below the first upper guide wheel 322. The second upper guide wheel 323 is arranged on the side of the first upper guide wheel 322 away from the speed limiting wheel 11, and its height is higher than the first upper guide wheel 322. After the speed limit rope 2 leaves the first upper guide wheel 322, it goes around the second upper guide wheel 323 and goes around the return wheel 31. At this time, the part of the speed limit rope 2 between the second upper guide wheel 323 and the return wheel 31 is parallel to the oblique truss. The lower guide wheel is arranged below the upper guide wheel, and includes a first lower guide wheel 324 and a second lower guide wheel 325. After the speed limit rope 2 leaves the return wheel 31, it extends in a direction parallel to the oblique truss, reaches the top of the first lower guide wheel 324 and goes around the first lower guide wheel 324. The second lower guide wheel 325 is arranged on the side of the first lower guide wheel 324 close to the tension wheel 41, and its height is lower than the first lower guide wheel 324. The edge of the second lower guide wheel 325 close to the tension wheel 41 and the edge of the tension wheel 41 close to the second lower guide wheel 325 are tangent to the same vertical straight line. After the speed limit rope 2 leaves the first lower guide wheel 324, it goes around the top of the second lower guide wheel 325 and extends vertically to the tension wheel 41.

[0034] The speed limiting host 1 also includes a first centrifugal hammer, a brake switch, a second centrifugal hammer and a rope press. The first centrifugal hammer and the second centrifugal hammer are both connected to the speed limiting wheel 11. When the speed of the speed limiting wheel 11 reaches the first preset speed, the first centrifugal hammer moves toward the edge of the speed limiting wheel 11 under the action of centrifugal force and reaches the first preset position. At this time, the distance between the first centrifugal hammer and the axis of the speed limiting wheel 11 is equal to the distance between the brake switch and the axis of the speed limiting wheel 11. The first centrifugal hammer is displaced and hits the brake switch as the speed limiting wheel 11 rotates. The brake switch is electrically connected to the traction motor of the power system of the inclined elevator. The brake switch is turned on by the impact of the first centrifugal hammer, so that the traction motor stops working under the action of the brake, and the traction rope between the traction motor and the car base 102 no longer extends downward, thereby causing the car base 102 to stop suddenly. When the traction rope breaks and the traction machine stops working, the car base 102 continues to slide down, and the speed limiting wheel 11 further accelerates to the second preset speed. At this time, the second centrifugal hammer moves toward the edge of the speed limiting wheel 11 under the action of centrifugal force and reaches the second preset position, thereby pushing the locking tongue set on the second connecting rod to lock the speed limiting wheel 11 and the trigger wheel coaxial therewith. The trigger wheel rotates with the speed limiting wheel 11, pulling the connecting rod connected between the trigger wheel and the rope presser, causing the rope presser to rotate and press down toward the speed limiting wheel 11, clamping the speed limiting rope 2 between the speed limiting wheel 11 and the rope presser. At this time, the speed limiting wheel 11 and the speed limiting rope 2 play the role of supporting the car base 102.

[0035] See also Figure 1 and Figure 2The elevator speed limiting system also includes a safety clamp 6, which includes a trigger device 61, a clamp seat 62 and a clamp body 63. The clamp seat 62 is arranged at the lower end of the elevator car 101, and the clamp body 63 is accommodated in the internal space of the clamp seat 62. The trigger device 61 is arranged at the end of the clamp body 63 close to the elevator car 101, passes through the clamp seat 62 and slides along the clamp seat 62. The trigger device 61 is connected to the higher end of the elevator car 101 through the lifting assembly 5. The internal space of the clamp seat 62 is trapezoidal, and the cross-sectional area of ​​the end close to the elevator car 101 is smaller. A track block 621 is respectively arranged on the two inclined sides of the internal space of the clamp seat 62. The clamp body 63 includes two oppositely arranged sliding blocks 631, which are in the shape of a right-angled trapezoid, with vertical sides arranged opposite to each other, and the inclined sides are slidably connected to the track block 621, and the two sliding blocks 631 are respectively arranged on both sides of the car slide rail of the inclined elevator. The lifting assembly 5 in this embodiment includes a lifting rope 51 of fixed length and an extension device 52. The extension device 52 is at the higher end of the elevator car 101, the speed limit rope 2 is connected to one end of the extension device 52, and the other end of the extension device 52 is rotatably connected to the car base 102, and the end of the lifting assembly 5 is connected to the middle of the extension device 52. When the tension on the speed limit rope 2 is greater than the preset tension, the extension device 52 rotates. The preset tension is greater than the tension on the speed limit rope 2, so that the extension device 52 will not be triggered when the inclined elevator is running normally. When the speed limiting rope 2 is clamped between the speed limiting wheel 11 and the rope presser, the tension applied by the car base 102 to the speed limiting rope 2 is greater than the preset tension. At this time, the extension device 52 is triggered, extending the distance between the end of the speed limiting rope 2 and the end of the car base 102, so that the distance between the end of the lifting component 5 and the clamp seat 62 is increased, and the clamp body 63, driven by the lifting component 5, slides along the internal space of the clamp seat 62 toward the car base 102, so that the distance between the two sliding blocks 631 becomes smaller, so that the safety clamp 6 clamps the car slide rail to achieve mechanical braking of the car base 102, thereby improving the safety of the inclined elevator.

[0036] The beneficial effect of the utility model is that the tensioning assembly 4 can be protected in the elevator room, thereby reducing the aging of the speed limiting system caused by external environmental erosion, thereby extending the service life of the speed limiting system and improving the safety of the inclined elevator.

[0037] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0038] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A speed limiting system for an inclined elevator, characterized in that: The invention comprises a speed limiting main machine (1), a speed limiting rope (2), a directional assembly and a tensioning assembly (4); the speed limiting rope (2) passes around the speed limiting main machine (1), the directional assembly and the tensioning assembly (4); and the two ends of the speed limiting rope (2) are respectively connected to the two ends of a car base (102) to form a closed ring structure; the directional assembly is connected to the two ends of an inclined truss so that part of the speed limiting rope (2) is parallel to the inclined truss; the tensioning assembly (4) is arranged below the speed limiting main machine (1); the tensioning assembly (4) comprises a tensioning wheel (41) and a tensioning counterweight (42); the tensioning wheel (41) is connected to the top of the tensioning counterweight (42), and the speed limiting rope (2) passes around the tensioning wheel (41).

2. The speed limiting system for an inclined elevator according to claim 1, characterized in that: The tensioning assembly (4) further comprises a tensioning bracket (43) arranged below the speed limiting main engine (1), the tensioning bracket (43) comprising a vertically arranged counterweight slide rail, and the tensioning counterweight (42) is slidably connected to the counterweight slide rail.

3. The speed limiting system for an inclined elevator according to claim 1, characterized in that: The directional assembly comprises a return bending wheel (31) and a direction-changing wheel group (32); the direction-changing wheel group (32) is connected to the higher end of the oblique truss, and the return bending wheel (31) is connected to the lower end of the oblique truss. The speed limiting rope (2) passes through the speed limiting main engine (1) and extends in a vertical downward direction to reach the direction-changing wheel group (32). After leaving the direction-changing wheel group (32), the speed limiting rope (2) bypasses the return bending wheel (31), passes through the direction-changing wheel group (32) again, and extends in a vertical downward direction to reach the tensioning assembly (4).

4. The speed limiting system for an inclined elevator according to claim 3, characterized in that: The directional assembly further comprises a guide wheel bracket (321), the direction-changing wheel assembly (32) comprises a plurality of upper guide wheels and lower guide wheels detachably connected to the guide wheel bracket (321), the upper guide wheels being arranged between the speed limiting main engine (1) and the return bending wheel (31), and the lower guide wheels being arranged between the return bending wheel (31) and the tensioning assembly (4).

5. The speed limiting system for an inclined elevator according to claim 4, characterized in that: After leaving the speed limiting main machine (1), the speed limiting rope (2) passes under one of the upper guide wheels and then passes over the top of another upper guide wheel. After leaving the return bend wheel (31), the speed limiting rope (2) passes over the tops of a plurality of lower guide wheels in sequence.

6. The speed limiting system for an inclined elevator according to claim 1, characterized in that: The speed limiting main machine (1) comprises a speed limiting wheel (11), a first centrifugal hammer and a brake switch. The speed limiting rope (2) passes around the speed limiting wheel (11), and the speed limiting wheel (11) rotates with the displacement of the speed limiting rope (2). When the speed of the speed limiting wheel (11) reaches a first preset speed, the first centrifugal hammer triggers the brake switch, and the brake switch is electrically connected to the traction machine of the elevator.

7. The speed limiting system for an inclined elevator according to claim 6, characterized in that: The speed limiting main machine (1) further comprises a rope press and a second centrifugal hammer. When the rotation speed of the speed limiting wheel (11) reaches a second preset speed, the second centrifugal hammer triggers the rope press, and the rope press clamps the speed limiting rope (2) between the speed limiting wheel (11) and the rope press.

8. The speed limiting system for an inclined elevator according to claim 7, characterized in that: The invention also comprises a safety clamp (6), wherein the safety clamp (6) comprises a clamp seat (62), a clamp body (63) and a trigger device (61); the clamp seat (62) is connected to the lower end of the car base (102); the clamp body (63) is connected to the clamp seat (62); the trigger device (61) is connected to the clamp body (63) and is connected to the speed limit rope (2); when the tension applied to the speed limit rope (2) is greater than a preset tension, the trigger device (61) drives the clamp body (63) to be controllably clamped, thereby constraining the freedom of the car base (102) relative to the oblique truss.

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