A method for continuously opening and closing load-bearing cables of a multi-cable cable car

Abstract

The present invention provides a method for continuous opening and closing operation of load-bearing cables of a multi-cable cable car, comprising a load-bearing cable located above the cable car and a running cable for guiding the cable car to move forward, wherein a connecting structure is arranged at intervals between the load-bearing cable and the running cable, wherein one end of the connecting structure is fixedly connected to the load-bearing cable, and a cable holding mechanism capable of clamping and loosening is provided between the lower end of the connecting structure and the running cable. When the cable car is running, the cable holding mechanisms of several connecting structures located on the front side of the cable car in the direction of travel change from a state of clamping the running cable to a state of loosening the running cable to ensure the passage of the upper part of the cable car, and the cable holding mechanisms on the rear side of the cable car change from a state of loosening the running cable to a state of clamping the running cable. The method can meet the switching of the running cable clearance state and the connection load-bearing state during the operation of the cable car, so that the cable car equipment can carry more and heavier cable car cars between supports of the same distance, and the number of supports can be reduced in the design of lines with the same transportation capacity, so that the operating speed of the cable car can be significantly improved.

Description

Technical Field

[0001] The invention relates to a method for continuously opening and closing load-bearing cables of a multi-cable cable car. Background Art

[0002] The advancement of ropeway technology has made passenger ropeways gradually become a mainstream means of sightseeing transportation. In some cities, such as La Paz, the capital of Bolivia, and London, England, ropeways are also used as urban transportation. Since ropeways run in the air, they do not affect the driving of ground vehicles, and have strong terrain adaptability and free layout. The circular detachable ropeway has quite mature technology and has always maintained a safe operation state. However, the operating speed and carrying capacity have always been the bottlenecks hindering the development of passenger ropeways, making the passenger flow of passenger ropeways always at a low level, unable to undertake transportation tasks above medium capacity, and requiring a long waiting time in line to ride most ropeway systems.

[0003] The most advanced type of passenger ropeway at present is the 3S ropeway, which is a three-line detachable ropeway consisting of two load-bearing running ropes and one traction rope. This type of ropeway combines the load-bearing technology of the reciprocating ropeway with the traction technology of the detachable ropeway. It has the characteristics of large span, strong lifting capacity, large cabin space and fast travel. There are currently 13 ropeways of this type in the world. It was first used in the Lushan passenger ropeway in China. It was produced and provided by the Swiss Doppelmayr Company and has a good operating effect.

[0004] Although the 3S cableway has the advantages of large transport capacity and speed, it uses running wheels and load-bearing cables to roll forward, so it needs to use supporting wheels or brackets to support the brackets in the section. When the cable car passes through the brackets at high speed, the running wheels cannot fully contact the load-bearing cables. When the cables swing horizontally, they are prone to derailment (rope derailment) and cause accidents. Therefore, for safety reasons, the speed of the 3S cableway is generally set within 10m / s.

[0005] Secondly, since the upper part of the cable needs to be in contact with the running wheel, a suspended bearing structure will cause structural conflict. For this reason, the bearing capacity of the cable between the two brackets is limited. When the distance between the cars is not large, the distance between the two brackets cannot be set too large, which affects the cableway capacity.

[0006] At present, the operating speed of mainstream passenger ropeways does not exceed 15m / s, and the main reason for the speed limit is its safety issues. Most of the world's fastest cable car lines adopt the operation mode of multi-cable ropeways. In the operating module located on the top of the car, the gripper located at the bottom holds a traction cable to pull the cable car forward, and the multiple running wheels located at the upper part for bearing weight contact one or more load-bearing cables and roll and run. If the running speed is too fast, the running wheel will be derailed (derailed) in the middle of the section, causing serious accidents. The bearing capacity of the large-span bracket erected according to the existing technology is also very limited. Since the contact surface between the running wheel and the running cable is too small, the cross-sectional size of the running cable is generally not large. If the speed in the middle of the operating section is too fast, it may cause excessive local stress between the running wheel and the load-bearing cable, resulting in rope breakage. Keeping the upper part of the load-bearing cable clear and the running wheel can be completely attached to the load-bearing cable throughout the operation is one of the best solutions to solve the derailment problem and improve the safety of operation, thereby increasing the operating speed of the cable car. According to the existing technology, this situation will result in the inability to arrange supporting structures around the cables in the middle of the operating range. Using the above layout over a long distance will result in low carrying capacity in the section and will not substantially increase the transport capacity. Summary of the invention

[0007] The present invention improves the above-mentioned problem, that is, the technical problem to be solved by the present invention is that the carrying capacity of the cables between large-span supports is very limited. Since the contact area between the running wheels and the running cables is too small, the interval carrying capacity is low and the transportation capacity cannot be substantially improved.

[0008] The specific implementation scheme of the present invention is: a method for continuous opening and closing operation of the load-bearing cables of a multi-cable cable car, comprising a load-bearing cable located above the cable car and a running cable for guiding the cable car to move forward, characterized in that a connecting structure is arranged at intervals between the load-bearing cable and the running cable, one end of the connecting structure is fixedly connected to the load-bearing cable, and a cable-holding mechanism capable of clamping and loosening is provided between the lower end of the connecting structure and the running cable. When the cable car is running, the cable-holding mechanisms of several connecting structures located on the front side of the cable car in the direction of travel change from a state of clamping the running cable to a state of loosening the running cable to ensure that the cable car running wheels pass from the top, and the cable-holding mechanisms on the rear side of the cable car's traveling position change from a state of loosening the running cable to a state of clamping the running cable.

[0009] Furthermore, the connecting structure includes a load-bearing cable hook fixed below the load-bearing cable, and the cable holding mechanism includes a pair of opening and closing arms hinged at the lower end of the load-bearing cable hook, which can be opened and closed by a closing and opening drive device, and each opening and closing arm has a cable holding mechanism on the inner side. The cable holding mechanism includes a limited caliper fixed on the inner side of the opening and closing arm, and a movable clamp located on the inner side of the opening and closing arm and can move toward the direction of the limited caliper, and the movable clamp is driven to move by the clamp driving device.

[0010] Furthermore, the upper end of the opening and closing arm is hingedly connected to the lower end of the load-bearing cable hook via a bearing, and a gap is left between the opening and closing arms for the running cable to pass through.

[0011] Furthermore, the corresponding limit calipers and movable clamps on the inner sides of the two opening and closing arms are symmetrically arranged at the same height, and when the opening and closing arms are closed, a groove is formed at the closing position of the two limit calipers and the movable clamp.

[0012] Furthermore, the opening and closing drive device is a pneumatic cylinder, an electric cylinder or a hydraulic cylinder, and the opening and closing drive device is fixed to the side of the hook. The telescopic end of the opening and closing drive device is hingedly connected to the upper part of the opening and closing arm, and the opening and closing arm rotates around the hinge with the lower end of the hook through the telescopic end.

[0013] Furthermore, the clamp driving device is a pneumatic cylinder, an electric cylinder or a hydraulic cylinder, the clamp driving device is fixed to the opening and closing arm, and the telescopic end of the clamp driving device is fixedly connected to the movable clamp.

[0014] Furthermore, the load-bearing cable hook is extended with a connecting rod, and the upper end of the opening and closing arm is hingedly connected to the connecting rod.

[0015] Furthermore, the movable clamp is staggered frontward and rearward, and the inner end of the movable clamp has an upward protrusion.

[0016] Furthermore, a distance sensor is fixed on the load-bearing cable hook, the load-bearing cable or the opening and closing arm.

[0017] Compared with the prior art, the present invention has the following beneficial effects: by utilizing the fixation of the structure on the load-bearing cable, the traveling cable can be clamped and released, thereby satisfying the switching between the clearance state and the connected load-bearing state during the operation of the cable car, shortening the clearance state length of the traveling cable, and allowing the cable car equipment to carry more and heavier cable car cars between brackets at the same distance. The number of brackets can be reduced in the design of lines with the same capacity, so that the operating speed of the cable car can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the continuous opening and closing connection structure of the present invention.

[0019] Figure 2 It is a schematic side view of the installation of the continuous opening and closing connection structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the cable group structure of the cable car of the present invention in a non-operating state.

[0021] Figure 4 It is a schematic diagram of the position structure of the running rope and the opening and closing arm in the closed state of the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of the cable holding mechanism of the present invention in the released state.

[0023] Figure 6 It is a schematic diagram of the structure of the opening and closing arm in the open state and the running cable structure of the present invention.

[0024] Figure 7 This is a structural schematic diagram of the cable car of the present invention when it starts running.

[0025] Figure 8 It is a schematic diagram of the result when the cable car of the present invention starts to run to the middle.

[0026] Fig. 9 A schematic diagram of the cable car working state structure of the present invention. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1 to 9 As shown, in this embodiment, a cable group is included, which includes, from top to bottom, a load-bearing cable 101 located above the cable car, a running cable 102 for guiding the cable car, and a traction cable 103 for traction of the cable car at the bottom. Generally, the load-bearing cable has a larger diameter, and the running cable and traction cable have smaller diameters. The cable car 100 moves through rollers that cooperate with the running cable. This patent mainly solves the load-bearing problem between the running cable and the load-bearing cable, and the traction problem of the traction cable and the cable car is not described in detail.

[0029] The above-mentioned load-bearing cable is an endless cable, which is fixed by anchoring at both ends. Each bracket has several sets of anchoring equipment, which are used to tighten the load-bearing cable in the middle section between the two brackets. The load-bearing cable does not directly contact the cable car running device. The above-mentioned running cable is an endless cable, which is pre-tensioned at both ends.

[0030] In the present embodiment, the load-bearing cable hook 10 of the continuous opening and closing connection structure is hinged at the lower end of a pair of opening and closing arms 20 driven by an opening and closing driving device to achieve opening and closing. The inner side of each opening and closing arm 20 has a cable holding mechanism, and the cable holding mechanism includes a limited position caliper 210 fixed to the inner side of the opening and closing arm 20 and a movable clamp 220 located on the inner side of the opening and closing arm and capable of moving toward the direction of the limited position caliper, and the movable clamp 220 is driven to move by the clamp driving device.

[0031] In this embodiment, the upper end of the opening and closing arm 20 is hingedly connected to the lower end of the load-bearing cable hook via a bearing, and a gap is left between the opening and closing arms for the running cable to pass through. In this embodiment, the corresponding limit calipers 210 and movable clamps 220 on the inner sides of the two opening and closing arms 20 are symmetrically arranged at the same height, and when the opening and closing arms are closed, a groove is formed at the closing position of the two limit calipers and the movable clamps.

[0032] In this embodiment, the opening and closing arm 20 is in a curved shape with a vertical lower portion and an oblique upper portion to form a clamping area between the two opening and closing arms 20. The design length of the opening and closing arm needs to ensure that the running rope 102 is within the area after the opening and closing arm 20 is closed, and the running rope 102 is located between the limit clamp 210 and the movable clamp 220.

[0033] In this embodiment, the opening and closing drive device is a hydraulic cylinder 30. In actual design, an electric cylinder can be used according to the load-bearing requirements of the predetermined design. The wires or oil delivery pipelines are laid along the direction of the load-bearing cable 101. The hydraulic cylinder 30 is fixed to the side of the hook, and the hydraulic telescopic rod 310 of the hydraulic cylinder 30 is hingedly connected to the upper corner of the opening and closing arm. The opening and closing arm is opened and closed by the extension and retraction of the hydraulic telescopic rod 310, which enables the opening and closing arm to rotate around the hinge at the lower end of the hook.

[0034] In this embodiment, the clamp driving device is an electric cylinder 40, which is fixed to the lower inner part of the opening and closing arm. The telescopic end of the clamp driving device is fixedly connected to the movable clamp, so that the movable clamp 220 moves toward the limit clamp 210 to lock the traveling rope between the movable clamp 220 and the limit clamp 210.

[0035] In actual design, the electric cylinder 40 may also adopt other telescopic driving modes such as pneumatic or hydraulic driving.

[0036] In this embodiment, the movable clamp 220 is staggered front to back, and the inner end of the movable clamp 220 has an upturned protrusion 221. When the opening and closing arm is closed, an arc-shaped groove supporting the running rope is formed. When the limit clamp 210 is closed, an angular groove is formed, thereby better clamping the running rope.

[0037] In this embodiment, the load-bearing cable hook is extended with a connecting rod 110, the upper end of the opening and closing arm is hingedly connected to the connecting rod, and the connecting rod 110 and the upper hook are fixedly connected and can also be integrally formed as a whole. The movable clamp and the inner side of the opening and closing arm can cooperate with the guide rail to achieve stability during movement.

[0038] During the overall installation, a position for arranging a retractable connector fixing hook is reserved at a certain interval in the load-bearing cable for fixing the load-bearing cable hook 10, and the lines and oil pipelines of the hydraulic cylinder 30 and the electric cylinder 40 are arranged beside the load-bearing cable.

[0039] When working, Figures 3-4 As shown, in the initial state, when there is no cable car passing or approaching the running rope, the hydraulic telescopic rod 310 of the hydraulic cylinder is extended, the opening and closing arm 20 is closed, and the movable clamp 220 clamps the running rope 102 together with the limit clamp 210;

[0040] like Figures 5 to 7As shown, the cable car is in operation, and the movable clamps 220 inside the opening and closing arms 20 of several opening and closing connection structures close to the direction of the cable car's advance are driven downward by the telescopic end of the electric cylinder 40 to loosen the traveling rope 102, and the hydraulic telescopic rod 310 of the hydraulic cylinder is shortened, the opening and closing arms 20 are opened, and the traveling rope is lowered to prepare for the cable car to pass. When the cable car passes, the opening and closing arms 20 of the upper connection structure continue to remain open for a period of time.

[0041] The cable car continues to move forward. After the cable car passes, the several opening and closing arms 20 located behind the cable car close one by one continuously and orderly. The movable clamps 220 in the closed opening and closing arms 20 are driven upward by the telescopic end of the electric cylinder 40 to re-clamp the running rope 102.

[0042] In this way, by using the continuously opening and closing connection device, a clearance section partially allowing the cable car to pass and a stably connected connection load-bearing section are formed between the load-bearing cable 101 and the running cable. When the cable car is running, the opening and closing arm 20 of the connector structure near the cable car is opened, and the running cable is in a clearance state to provide running quality; the opening and closing arm 20 away from the cable car is closed, and the running cable is suspended under the load-bearing cable and has bearing capacity. In this way, the safety and bearing capacity of the entire line are improved, thereby increasing the transportation capacity.

[0043] In actual design, the turntables of the turntables at both ends of the cable are equipped with cable speed measuring devices. The system calculates the real-time position of the cable car based on the running speed of the traction cable and the initial time when the cable car enters the interval. The position information of the cable car will be imported into the system, and the opening and closing connector 15-20m ahead of the cable car will be opened in advance by automatic control before the cable car arrives at a certain location; after the cable car passes under a certain connector, the system automatically controls the connector to re-grip the cable and close the cable gripper. This process is repeated in sequence to achieve smooth overall operation of the cableway line. Of course, a distance sensor can also be fixed on the load-bearing cable hook 10, the load-bearing cable 101 or the opening and closing arm 20 to sense the position of the cable car, and the accuracy of the cable car position sensing is ensured by the distance sensor.

[0044] Unless otherwise stated, any technical solution disclosed in the present invention disclosed above, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range, and any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many implementable numerical values. Since there are too many numerical values ​​to be exhaustive, the present invention discloses some numerical values ​​to illustrate the technical solution of the present invention, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the present invention.

[0045] If the present invention discloses or involves components or structures that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by integrated molding using a casting process) (except when it is obviously impossible to use an integrated molding process).

[0046] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the present invention include states or shapes that are approximate, similar, or close to them.

[0047] Any component provided by the present invention may be assembled from a plurality of separate components, or may be a separate component manufactured by an integral forming process.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A method for continuously opening and closing the load-bearing cables of a multi-cable cable car, comprising a load-bearing cable located above the cable car and a running cable for guiding the cable car to move, characterized in that: A connecting structure is arranged at intervals between the load-bearing cable and the running cable, one end of the connecting structure is fixedly connected to the load-bearing cable, and a cable gripping mechanism capable of clamping and loosening is provided between the lower end of the connecting structure and the running cable. When the cable car is running, the cable gripping mechanisms of several connecting structures located on the front side of the cable car in the direction of travel change from a state of clamping the running cable to a state of loosening the running cable to ensure the passage of the upper part of the cable car, and the cable gripping mechanisms on the rear side of the cable car change from a state of loosening the running cable to a state of clamping the running cable; The connecting structure comprises a load-bearing cable hook fixed below the load-bearing cable, the cable holding mechanism comprises a pair of opening and closing arms hinged at the lower end of the load-bearing cable hook and driven by an opening and closing driving device to achieve opening and closing, each opening and closing arm has a cable holding mechanism on the inner side, the cable holding mechanism comprises a limit clamp fixed on the inner side of the opening and closing arm and a movable clamp located on the inner side of the opening and closing arm and capable of moving toward the limit clamp, and the movable clamp is driven to move by the clamp driving device; The upper end of the opening and closing arm is hingedly connected to the lower end of the load-bearing cable hook via a bearing, and a gap is left between the opening and closing arms for the running cable to pass through; The corresponding limit calipers and movable clamps on the inner sides of the two opening and closing arms are symmetrically arranged at equal heights, and when the opening and closing arms are closed, a groove is formed at the closing position of the two limit calipers and the movable clamp; The opening and closing drive device is a pneumatic cylinder, an electric cylinder or a hydraulic cylinder, and the opening and closing drive device is fixed to the side of the hook. The telescopic end of the opening and closing drive device is hingedly connected to the upper part of the opening and closing arm, and the opening and closing arm rotates around the hinge with the lower end of the hook through the telescopic end. The movable clamp is staggered frontward and rearward, and the inner end of the movable clamp is provided with an upwardly tilted protrusion.

2. A method for continuous opening and closing of load-bearing cables of a multi-cable cable car according to claim 1, characterized in that: The clamp driving device is a pneumatic cylinder, an electric cylinder or a hydraulic cylinder, the clamp driving device is fixed to the opening and closing arm, and the telescopic end of the clamp driving device is fixedly connected to the movable clamp.

3. A method for continuous opening and closing of load-bearing cables of a multi-cable cable car according to claim 1, characterized in that: The load-bearing cable hook is extended with a connecting rod, and the upper end of the opening and closing arm is hingedly connected to the connecting rod.

4. A method for continuous opening and closing of load-bearing cables of a multi-cable cable car according to claim 1, characterized in that: A distance sensor is fixed on the load-bearing cable hook, the load-bearing cable or the opening and closing arm.

Images