Cable architecture respectively connected with landing door lock and calling box

Abstract

A cable framework respectively connected with a landing door lock and a calling box relates to the technical field of elevators, and comprises a calling box and a landing door lock junction box which are arranged at the position of an elevator landing door of each floor; the landing door lock junction boxes of the adjacent upper and lower layers of elevator landing doors are in single-line one-way connection transmission through landing door lock cables; the adjacent elevator landing door calling boxes on the upper layer and the lower layer are in one-way connection transmission through a power supply communication cable. And the landing door lock cable and the power supply communication cable on the uppermost layer are respectively connected with corresponding ports of the control cabinet. By adopting a new cable wiring framework, a branch cable wiring mode is cancelled, the cable wiring length is greatly saved, the material cost is reduced, meanwhile, the landing door lock loop line resistance is reduced, and by sharing the ground wire and utilizing an existing junction box and a box body as connection positions, the landing door lock loop line resistance is reduced. And the machining process is further simplified, the cost of protective materials is saved, efficient and reliable elevator system connection is achieved, and remarkable cost saving and performance improvement are achieved.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and more specifically to a cable structure that connects the landing door lock and the call box respectively. Background Technology

[0002] In elevator systems, the connection between the landing door locks and call boxes and the control cabinet is crucial. Currently, the common connection method uses branched cables. This method is characterized by a branch point between every two floors to facilitate signal transmission and cable management (see attached diagram in the manual). Figure 1 Since branch cables are laid inside elevator shafts, external materials such as heat shrink tubing, junction boxes, or PVC sheaths are typically used to protect the branch points from damage by the external environment.

[0003] Specifically, the connection signal of the landing door lock and the power supply and communication of the call box are first transmitted from the control cabinet to each branch point in the elevator shaft via the main branch cable. Inside each branch point, the landing door lock branch cable and the call box branch cable are respectively connected to the main branch cable for signal transmission. After the connection is completed, the landing door lock branch cables and call box branch cables are led out from the branch points to the installation positions of the landing door lock and call box, respectively, and then connected to the landing door lock and call box. The wiring of the landing door lock cable, call box power supply and communication cable is redundant and repetitive, resulting in long wiring distances and high cable material costs. A branch point is set between every two floors in the branch cable, and the branch cables from the branch point to the landing door lock and call box also suffer from redundant and repetitive wiring paths, resulting in back-and-forth trips and high cable material costs. Because the landing door lock circuit uses a series connection, the circuit resistance is relatively high. As the elevator height increases, the resistance of the landing door lock circuit cable increases exponentially, which is detrimental to the power supply design and effective conduction of the landing door lock circuit. The branch points are located inside the elevator shaft, requiring external protection materials, incurring fixed material costs. The main branch cable, landing door lock branch cable, and call box branch cable need to be spliced ​​at the branch point, resulting in numerous wiring steps and high labor costs. Furthermore, the branch cable design requires each section of the main branch cable, landing door lock branch cable, and call box branch cable to have an independent ground wire, leading to redundancy and excessive ground wire quantity.

[0004] However, while the landing door lock signal and the call box communication are independent and do not interfere with each other, the current wiring of both is bundled together on a branch cable. Therefore, the wiring for the landing door lock signal is limited by the number of call box communication terminals that can be connected. This requires setting a design interval every 16 floors, and each design interval needs to return to the control cabinet for connection. This method not only increases the length and complexity of the cables but may also affect signal stability and transmission efficiency. Summary of the Invention

[0005] The purpose of this invention is to propose a cable structure that connects the door lock and the call box respectively, so as to solve the technical problems pointed out in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A cable structure for connecting the door lock and the call box respectively, comprising:

[0008] Call boxes and door lock junction boxes are installed at the elevator landing doors on each floor.

[0009] The door lock junction boxes of adjacent elevator doors on different floors are connected by a single-wire, unidirectional cable for transmission.

[0010] The power and communication cables between adjacent elevator door call boxes on different floors are used for one-way power transmission.

[0011] The door lock cable and power communication cable located on the top layer are connected to the corresponding ports of the control cabinet.

[0012] Furthermore, a pit maintenance box is installed in the shaft, and the landing door lock circuit is specifically a bottom-up transmission path from the pit maintenance box to the control cabinet; wherein, the power signal of the landing door lock circuit is output from the P48V power output terminal of the pit maintenance box, and this power signal is connected in series from bottom to top through the landing door lock cable to the landing door lock junction box of each elevator landing door, directly reaching the control cabinet and the landing door lock circuit signal input port.

[0013] Furthermore, the power communication cable is led out from the top of the control cabinet and connected in series with each call box. The call box is equipped with a communication electronic board. The connector of the power communication cable to the communication electronic board of the call box is connected in parallel as two cable segments, one in and one out. The power and communication signal definitions of the two cable segments are the same. One cable is the cable entering the electronic board, and the other cable is the cable leading out of the electronic board.

[0014] Furthermore, the floor door lock cable is equipped with a separate independent ground wire, and the floor door lock junction boxes of each floor are connected in series through this ground wire. The grounding terminal of the call box of each floor is connected to the grounding terminal of the floor door lock junction box through the call box grounding wire. The grounding terminal of the pit maintenance box is connected to the grounding terminal of the floor door lock junction box of the lowest floor.

[0015] Furthermore, other components in the shaft and pit that require grounding should have their grounding terminals connected to the common grounding point of the common door lock junction box.

[0016] Furthermore, the cable architecture also includes an intelligent monitoring system that can monitor the working status of the door locks and call boxes in real time. The monitoring includes the integrity of cable connections, the quality of signal transmission, and the stability of power supply. Once an abnormality is detected, an alarm signal is immediately sent to the control cabinet.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention, by adopting a new cable routing architecture, eliminates the branching cable routing method, significantly reduces cable routing length and material costs, while reducing the resistance of the landing door lock return line, ensuring power supply design and circuit continuity. By sharing a ground wire and utilizing existing junction boxes and enclosures as connection points, the manufacturing process is further simplified and the cost of protective materials is saved, achieving an efficient and reliable elevator system connection, and bringing significant cost savings and performance improvements. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of existing technology;

[0021] Figure 2 This is a schematic diagram of the cable structure of the present invention. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1

[0024] Reference Figure 2 The cable architecture in this embodiment includes a call box and a door lock junction box located at each elevator landing door. These components together constitute the basic unit of the elevator signal transmission system.

[0025] Specifically, the door lock junction boxes of adjacent elevator doors on different floors are connected by a single-line, unidirectional cable. This connection method ensures stable transmission of door lock signals and reduces cable complexity. Simultaneously, the call boxes of adjacent elevator doors on different floors are also connected by a unidirectional power and communication cable. This allows power and communication signals from the call boxes to be efficiently transmitted to each floor.

[0026] At the top level, the landing door lock cable and power communication cable are connected to the corresponding ports of the control cabinet. In this way, the entire elevator signal transmission system forms a closed loop, ensuring the integrity and reliability of the signals.

[0027] The cable architecture in this embodiment also includes a pit maintenance box located within the hoistway. The branch cable is eliminated, and the landing door lock circuit follows a bottom-up transmission path from the pit maintenance box to the control cabinet. The power signal for the landing door lock circuit is output from the P48V power output terminal of the pit maintenance box, and then connected in series through the landing door lock cable from bottom to top to the landing door lock junction boxes of each elevator landing door, ultimately leading directly to the control cabinet and connecting to the landing door lock circuit signal input port. Therefore, there is no need for back-and-forth connections to the control cabinet, the landing door lock circuit is changed from a 2-core cable to a 1-core cable, and the connection of each landing door lock is changed from the original branch cable connection at the branch point to a direct daisy-chain connection within the landing door lock junction box for each floor.

[0028] The above design not only simplifies cable routing but also improves the transmission efficiency of door lock signals. Furthermore, since the power signal is output from the pit maintenance box, it also facilitates inspection and maintenance work.

[0029] The cable architecture in this embodiment further optimizes the connection method of power and communication cables. Specifically, branch cables are eliminated, and power and communication cables are led out from the control cabinet from top to bottom and connected in series with each call box. A communication electronic board is installed inside the call box, and the connectors of the power and communication cables to the call box's communication electronic board are connected in parallel as two separate cables, one for input and one for output. The power and communication signal definitions of these two cables are identical; one cable enters the electronic board, and the other exits. The original connection of branch cables leading out of the call box from the branch point has been changed to a daisy-chain connection within the call box via the connectors on the call box's communication electronic board.

[0030] The above design not only ensures stable transmission of power communication signals but also improves the communication efficiency of the call box. Furthermore, the parallel connection method facilitates cable replacement and maintenance.

[0031] Example 2

[0032] Building upon Example 1, this embodiment's cable architecture also considers grounding. Specifically, the landing door lock cable has a separate, independent ground wire. The ground wires of the original branch main cable, landing door lock branch cable, and call box branch cable are all eliminated, and each landing door lock junction box is connected in series via this ground wire. Simultaneously, the grounding terminal of each call box is connected to the grounding terminal of the landing door lock junction box via the call box grounding wire. The grounding terminal of the pit maintenance box is connected to the grounding terminal of the lowest-level landing door lock junction box.

[0033] The above design improves the safety of the entire elevator signal transmission system and ensures stable transmission of grounding signals. At the same time, the use of a shared grounding method reduces the number and complexity of grounding cables.

[0034] Example 3

[0035] Building upon Example 2, the cable architecture in this example also considers other components within the shaft and pit that require grounding. Specifically, these components all share the grounding terminal of the landing door lock junction box for common grounding.

[0036] The cable architecture also includes an intelligent monitoring system that can monitor the working status of the landing door locks and call boxes in real time. The monitoring includes the integrity of cable connections, the quality of signal transmission, and the stability of power supply. Once an abnormality is detected, an alarm signal is immediately sent to the control cabinet so that timely measures can be taken to repair the problem and ensure the safe and efficient operation of the elevator system.

[0037] This invention eliminates branching cable routing and adopts a new cable routing architecture, solving problems such as repetitive routing within each design section and repetitive routing paths caused by the location of branching points. This significantly reduces the length of the landing door lock circuit cable, call box power supply, and communication cable, lowering cable material costs. The reduced length of the landing door lock circuit cable minimizes the impact of cable resistance in the circuit; even with significant elevator height increases, the resistance of the landing door lock circuit does not increase exponentially, minimizing its impact and effectively ensuring the power supply design and continuity of the landing door lock circuit. Furthermore, by sharing the ground wire of the landing door lock cable, the call box grounding and the landing door lock grounding point are connected. By employing various connection methods, the routing length of ground wires in the door lock and call box circuits can be significantly reduced, lowering cable material costs. Eliminating branch points reduces cable length loss caused by branch point processing, further reducing the length of used cables, lowering cable material costs, simplifying cable processing technology, and reducing labor costs during cable processing. Furthermore, without adding any new protective materials, the existing door lock junction boxes are effectively utilized as connection points for each door lock cable, and the call box housing is effectively utilized as connection points for the power and communication cables of each call box, satisfying the protection requirements within the shaft while saving on protective material costs.

[0038] This invention, by adopting a new cable routing architecture, eliminates the branching cable routing method, significantly reduces cable routing length and material costs, while reducing the resistance of the landing door lock return line, ensuring power supply design and circuit continuity. By sharing a ground wire and utilizing existing junction boxes and enclosures as connection points, the manufacturing process is further simplified and the cost of protective materials is saved, achieving an efficient and reliable elevator system connection, and bringing significant cost savings and performance improvements.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cable structure for connecting a door lock and a call box respectively, characterized in that, include: Call boxes and door lock junction boxes are installed at the elevator landing doors on each floor. The door lock junction boxes of adjacent elevator doors on different floors are connected by a single-wire, unidirectional cable for transmission. The power and communication cables between adjacent elevator door call boxes on different floors are used for one-way power transmission. The door lock cable and power communication cable located on the top layer are connected to the corresponding ports of the control cabinet.

2. The cable structure for connecting the door lock and the call box respectively according to claim 1, characterized in that, A pit maintenance box is installed inside the shaft. The landing door lock circuit is a transmission path from bottom to top from the pit maintenance box to the control cabinet. The power signal of the landing door lock circuit is output from the P48V power output terminal of the pit maintenance box. This power signal is connected in series with the landing door lock junction boxes of each elevator landing door through the landing door lock cable from bottom to top, and directly connected to the control cabinet and the landing door lock circuit signal input port.

3. The cable structure for connecting the door lock and the call box respectively according to claim 2, characterized in that, The power communication cable is led out from the top of the control cabinet and connected in series with each call box. The call box is equipped with a communication electronic board. The connector of the power communication cable to the communication electronic board of the call box is connected in parallel as two cable segments with one inlet and one outlet. The power and communication signal definitions of the two cable segments are the same. One cable is the cable entering the electronic board and the other cable is the cable leading out of the electronic board.

4. The cable structure for connecting the door lock and the call box respectively according to claim 3, characterized in that, Each floor door lock cable is equipped with an independent ground wire, and the floor door lock junction boxes of each floor are connected in series through this ground wire. The grounding terminal of the call box of each floor is connected to the grounding terminal of the floor door lock junction box through the call box grounding wire. The grounding terminal of the pit maintenance box is connected to the grounding terminal of the floor door lock junction box of the lowest floor.

5. A cable structure for connecting a door lock and a call box according to claim 4, characterized in that, For other components in the shaft and pit that require grounding, the grounding terminal of the common door lock junction box should be connected to the common grounding.

6. A cable structure for connecting a door lock and a call box according to any one of claims 1 to 5, characterized in that, The cable architecture also includes an intelligent monitoring system that can monitor the working status of the door locks and call boxes in real time. The monitoring includes the integrity of cable connections, the quality of signal transmission, and the stability of power supply. Once an abnormality is detected, an alarm signal is immediately sent to the control cabinet.

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