Electromagnetic lock of platform door
By embedding heating devices and intelligent control boxes in the fixed bracket of the electromagnetic lock on the platform door, the problem of the lock lever being unable to move due to icing is solved, and the anti-freezing function of the electromagnetic lock is realized, ensuring the normal operation of the station and the safety of passengers.
Patent Information
- Application Number
- CN202421015328.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-11
AI Technical Summary
In winter low temperatures, the lock rod of the electromagnetic lock of the platform door is easily unable to move due to snowfall and freezing, which affects the switch of the door and passengers getting on and off the vehicle, resulting in the station being blocked from driving.
A platform door electromagnetic lock with heating device is designed. By embedding heating devices such as induction heating coils or resistive wire heating devices in a fixed bracket, it ensures that the lock rod can be effectively heated in any state to prevent icing, combined with intelligence The control box realizes intelligent temperature control.
It effectively solves the problem of inability to move after the lock lever is frozen, provides a safe and reliable, easy to install and maintain, ensures the smooth opening and closing of the platform door, and achieves rapid heating and local heating effects through intelligent heating control, satisfying the Safety and fire protection requirements.
Smart Images
Figure CN222276435U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electromagnetic locks, in particular to an electromagnetic lock for a platform door with an anti-freezing function. Background Art
[0002] Platform doors are widely used in rail transit. When the train arrives and departs, the platform doors can be opened and closed automatically to mechanically separate the driving space from the passenger waiting space. Electromagnetic locks are required for platform doors.
[0003] At present, the common electromagnetic lock structure of platform doors can be found in the Chinese utility model patent with publication number CN213927897U, which includes a matching lock head and a lock buckle. The lock head includes a shell with a fixing hole, a lock rod and an electromagnet are arranged in the shell, a reset spring with a reset force in the direction opposite to the driving force of the electromagnet is arranged between the lock rod and the electromagnet, the head end of the lock rod extends out of the shell, and the end is inserted into the electromagnet. When the power is on, the lock rod is extended or retracted along its length direction under the drive of the electromagnet, and is reset relative to the electromagnet under the action of the reset spring after power is off; a lock sensing switch and an unlocking sensing switch triggered by the lock rod are arranged on both sides of the lock rod along the length direction near one end of the extension direction of the shell; the lock buckle includes a fixing plate with a fixing hole, and a lock hole arranged on the fixing plate and corresponding to the head end of the lock rod extending out of the shell, the lock rod is telescopic under the action of the electromagnet and the reset spring, and the head end of the lock rod is inserted into and leaves the lock hole to achieve locking and unlocking.
[0004] However, for urban rail transit in northern my country, if the canopy structure of the elevated or ground station is not fully enclosed, the lock rod of the platform door electromagnetic lock (mainly this position) is easily frozen by snow in low temperature weather in winter and cannot be operated, affecting the door opening and closing and passengers getting on and off the train, greatly affecting the operation of the station. Therefore, it is very necessary to provide an anti-icing solution for the platform door electromagnetic lock to effectively solve the above problem. Utility Model Content
[0005] The purpose of the utility model is to provide an electromagnetic lock for a platform door with an antifreeze function, in order to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.
[0006] In order to achieve the above objectives, the utility model adopts the following technical solutions.
[0007] An electromagnetic lock for a platform door, comprising an electromagnetic lock box, a fixing bracket and a heating device; a lock rod, an electromagnet and a reset spring are installed on the electromagnetic lock box, the electromagnet and the reset spring apply forces in opposite directions to the lock rod, the head end of the lock rod extends out of the electromagnetic lock box, and the tail end is inserted into the electromagnet; the fixing bracket is used to realize the connection and fixation of the electromagnetic lock box, a through hole corresponding to the lock rod is provided on the fixing bracket, and the heating device is installed in the through hole and is clearance-matched with the lock rod.
[0008] More preferably, the heating device is an induction heating coil, comprising an insulated wire coil and a wiring terminal wound around the locking rod, and electromagnetic induction heating of the locking rod is achieved by passing alternating current through the wiring terminal to the insulated wire coil.
[0009] More preferably, the heating device is a resistance wire heating device, comprising a heating resistance wire and a wiring terminal wound around the locking rod, and the heating resistance wire is energized through the wiring terminal to generate heat.
[0010] More preferably, the platform door electromagnetic lock also includes a control box for controlling the operation of the heating device, the control box is connected to the wiring terminals of the heating device via cables, the control box is externally connected to a 24V DC power supply, includes a voltage regulating module, a time adjustment module and a heating module, to achieve a working voltage of 5-12V and a heating power of 30W-100W.
[0011] More preferably, the size of the control box does not exceed 100*80*60 mm, and the control box is installed inside the platform door side box.
[0012] More preferably, the cable is a low-smoke, halogen-free, flame-retardant cable.
[0013] More preferably, the heating device and the electromagnetic lock box are fixed by screws, adhesive or cable ties.
[0014] More preferably, the fixing bracket and the electromagnetic lock box are fixed by screws, adhesive or cable ties.
[0015] More preferably, an adjustment mounting hole is provided on the fixing bracket.
[0016] The technical solution provided by the utility model has at least the following technical effects or advantages.
[0017] 1. By installing a heating device in the through hole of the fixed bracket, the problem that the locking rod of the platform door electromagnetic lock cannot move after freezing can be effectively solved, which has the advantages of safety, reliability, small size, easy installation, and convenient use and maintenance. At the same time, since the heating device 3 is embedded in the through hole of the fixed bracket 2, whether the locking rod 4 is in the extended or retracted state, it can play a good heating and anti-freezing effect.
[0018] 2. The combined design of induction heating coil and control box can realize intelligent temperature control, fast heating start and good local heating effect.
[0019] 3. Safe voltage is used, there are no safety hazards, all materials meet fire protection requirements, and there are no fire hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 Shown is a schematic structural diagram of the platform door electromagnetic lock provided by the utility model.
[0021] Figure 2 Shown is a schematic diagram of the internal structure of the platform door electromagnetic lock provided by the utility model.
[0022] Figure 3 Shown is the control circuit diagram of the control box.
[0023] Description of Figure Numbers.
[0024] 1: electromagnetic lock box, 2: fixing bracket, 3: heating device, 4: locking rod, 5: control box.
[0025] 2-1: Install the adjustment hole.
[0026] 3-1: Insulated wire coil, 3-2: Terminal block.
[0027] 5-1: voltage regulation module, 5-2: time regulation module, 5-3: heating module. DETAILED DESCRIPTION
[0028] The following is a further description of the specific implementation of the utility model in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the utility model are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the utility model, and cannot be understood as limiting the utility model.
[0029] Additional aspects and advantages of the present invention will become apparent in the following description or will be understood through practice of the present invention.
[0030] Reference Figure 1 , Figure 2As shown, a platform door electromagnetic lock includes an electromagnetic lock box 1, a fixed bracket 2 and a heating device 3; a lock rod 4, an electromagnet and a reset spring are installed on the electromagnetic lock box 1, and the electromagnet and the reset spring apply opposite forces to the lock rod 4, and the head end of the lock rod 4 extends out of the electromagnetic lock box 1, and the tail end is inserted into the electromagnet; the fixed bracket 2 is used to realize the connection and fixation of the electromagnetic lock box 1, and a through hole corresponding to the lock rod 4 is provided on the fixed bracket 2, and the heating device 3 is installed in the through hole and is in clearance with the lock rod 4. When working, the lock rod 4 is heated by the heating device 3, which effectively prevents the lock rod from being unable to move due to snow and ice, and ensures the smooth opening and closing of the platform door. At the same time, since the heating device 3 is embedded in the through hole of the fixed bracket 2, whether the lock rod 4 is in the extended or retracted state, it can play a good heating and anti-freezing effect.
[0031] In this embodiment, the heating device 3 is preferably an induction heating coil, including an insulated wire coil 3-1 and a terminal 3-2 wound around the locking rod 4. After the insulated wire coil 3-1 is supplied with alternating current through the terminal 3-2, electromagnetic induction heating is generated in the locking rod 4, and the non-contact heating effect is the best. Obviously, those skilled in the art may also adopt other heating methods that are currently known or may be realized in the future, such as resistance wire heating, etc., according to different actual needs; they are not limited to this embodiment.
[0032] Combination Figure 3 As shown, it also includes a control box 5 for controlling the operation of the heating device 3. The control box 5 is connected to the terminal 3-2 of the heating device 3 through a cable. The control box 5 is externally connected to a 24V DC power supply, and includes a voltage regulating module 5-1, a time regulating module 5-2 and a heating module 5-3, so as to achieve a 5-12V working voltage and a 30W-100W heating power. The heating time of the induction heating coil is controlled by the time regulating module 5-2, such as working for 60s, stopping for 40s, and working in a cycle, etc.; it has the characteristics of being automatic, stable, maintenance-free and having a long service life.
[0033] Preferably, the size of the control box 5 does not exceed 100*80*60mm, and when used, the control box 5 is installed in the side box of the platform door. Preferably, the cables required for installing the platform door electromagnetic lock anti-icing system are all low-smoke halogen-free flame-retardant cables and other products that meet the requirements of subway use.
[0034] It should be noted that the fixing bracket 2, the heating device 3 and the electromagnetic lock box 1 can be detachably fixed by means of screws, adhesives, cable ties, etc., and an adjustment mounting hole 2-1 is also provided on the fixing bracket 2 to facilitate fine-tuning of the mounting position.
[0035] Compared with the prior art, the electromagnetic lock for platform doors provided in this embodiment has the following advantages: 1) By installing a heating device 3 in the through hole of the fixed bracket 2, the problem that the locking rod of the electromagnetic lock for platform doors cannot move after freezing can be effectively solved, and it has the advantages of safety, reliability, small size, easy installation, and convenient use and maintenance. 2) The combined design of the induction heating coil and the control box can realize intelligent temperature control, fast heating start, and good local heating effect; 3) It uses safe voltage, has no safety hazards, and all materials meet fire protection requirements, and have no fire hazards.
[0036] It should also be noted that, in the description of the present invention, directional words such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present invention.
[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, "at least" means one or more, unless otherwise clearly and specifically defined.
[0038] In the present invention, unless otherwise specified and limited, the terms "assembly", "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 also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0039] In the utility model, unless otherwise specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "below" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the height of the second feature. A first feature being "above", "below" and "below" a second feature includes that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the second feature.
[0040] Through the description of the above structure and principle, those skilled in the art should understand that the present invention is not limited to the above specific implementations. Improvements and substitutions based on the present invention using the known technology in the art fall within the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims and their equivalents. Parts not described in the specific implementations are prior art or common knowledge.
Claims
1. A platform door electromagnetic lock, characterized in that: It includes an electromagnetic lock box, a fixing bracket and a heating device; a lock rod, an electromagnet and a reset spring are installed on the electromagnetic lock box, the electromagnet and the reset spring apply forces in opposite directions to the lock rod, the head end of the lock rod extends out of the electromagnetic lock box, and the tail end is inserted into the electromagnet; the fixing bracket is used to realize the connection and fixation of the electromagnetic lock box, a through hole corresponding to the lock rod is provided on the fixing bracket, and the heating device is installed in the through hole and is matched with the lock rod clearance.
2. The electromagnetic lock for platform door according to claim 1, characterized in that: The heating device is an induction heating coil, which includes an insulated wire coil and a wiring terminal wound around the locking rod. After alternating current is passed through the wiring terminal to the insulated wire coil, electromagnetic induction heating of the locking rod is achieved.
3. The electromagnetic lock for platform door according to claim 1, characterized in that: The heating device is a resistance wire heating device, which includes a heating resistance wire and a connecting terminal wound around the locking rod, and the heating resistance wire is energized through the connecting terminal to generate heat.
4. The electromagnetic lock for platform door according to claim 2, characterized in that: It also includes a control box for controlling the operation of the heating device, the control box is connected to the wiring terminals of the heating device through cables, and the control box includes a voltage regulating module, a time regulating module and a heating module.
5. The electromagnetic lock for platform door according to claim 4, characterized in that: The control box is installed inside the platform door side box.
6. The electromagnetic lock for platform door according to claim 4, characterized in that: The cable is a low-smoke, halogen-free, flame-retardant cable.
7. The electromagnetic lock for platform door according to claim 1, characterized in that: The heating device and the electromagnetic lock box are fixed by screws, adhesive or cable ties.
8. The electromagnetic lock for platform door according to claim 1, characterized in that: The fixing bracket and the electromagnetic lock box are fixed by screws, adhesive or cable ties.
9. The electromagnetic lock for platform door according to claim 1, characterized in that: An adjustment mounting hole is provided on the fixing bracket.