Wireless interlocking control device of track platform crane and track car traction system
The wireless interlocking control device solves the problems of poor flexibility and safety hazards in traditional rail flatbed cranes and railcar traction systems, and realizes efficient and safe wireless interlocking control, ensuring that operation is not affected in the event of system failure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-03-03
AI Technical Summary
Traditional rail-mounted flatbed cranes and railcar traction systems rely on wired signal transmission and mechanical interlocking, which are inflexible, inefficient, and prone to safety hazards due to human error. They also lack effective fault isolation mechanisms, affecting operational efficiency and safety.
The system employs a wireless interlocking control device, adding a normally open limit switch interlock and a wireless transmission control mechanism. Wireless signal transmission is achieved through a signal receiving module and a signal transmission module. Combined with warning lights and fault isolation switches, the system ensures that the interlocking is automatically disconnected after the operation is completed, adding a dual prevention mechanism. The system also enables flexible adjustment and lifting of the boom through the drive motor and gear meshing.
It improves the operational efficiency and safety of rail flatbed cranes and railcar traction systems, prevents human error, ensures that system failures do not affect normal operation, and provides real-time status feedback and safety alerts.
Smart Images

Figure CN223963145U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of wireless interlocking control devices, specifically a wireless interlocking control device for a rail flatbed crane and a railcar traction system. Background Technology
[0002] The descriptions in this section are provided only as background information relating to this disclosure and do not constitute prior art.
[0003] Rail-mounted flatbed cranes and railcar traction systems are widely used in rail transit, cargo loading and unloading, and their safety and operational efficiency directly affect work processes and personnel safety. Traditional interlocking devices mostly rely on wired signal transmission and mechanical interlocking structures, which have the following limitations:
[0004] Traditional mechanical interlocking structures have poor adjustment flexibility, rely on manual operation for fixing and releasing the boom, are inefficient, and cannot provide real-time status feedback, making them prone to safety hazards due to human error.
[0005] The existing system lacks an effective fault isolation mechanism. Once the interlocking fails or the signal is interrupted, the railcar may not be able to start normally, affecting operational efficiency and even threatening driving safety. Utility Model Content
[0006] To address the shortcomings of existing technologies, this invention provides a wireless interlocking control device for a rail-mounted flatbed crane and railcar traction system, solving the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a wireless interlocking control device for a rail flatbed crane and a railcar traction system, comprising a flatbed crane base, a control panel housing at one end of the flatbed crane base, a control mechanism on one side of the control panel housing, a boom mechanism at one top end of the flatbed crane base, an interlocking mechanism at the other end of the flatbed crane base, and a battery fixedly connected to one side of the flatbed crane base.
[0008] Preferably, the control mechanism includes a protective shell fixedly connected to one side of the control panel housing, a fixing device plate installed inside the protective shell, a signal receiving module fixedly connected to the top of the fixing device plate, a signal transmission module provided on one side of the signal receiving module, and a PLC controller provided on one side of the signal transmission module.
[0009] Preferably, a control panel is installed on the top of the control panel housing, a fault isolation switch is mounted on the surface of the control panel, a warning light is fixedly connected to one side of the fault isolation switch, and a working status indicator light is installed on one side of the warning light.
[0010] Preferably, the boom mechanism includes a fixed base fixedly connected to the top of the flatbed crane seat, an electric base fixedly connected to the top of the fixed base, a first lifting arm fixedly connected to the top of the electric base, a first electric hydraulic cylinder movably connected to the bottom end of the first lifting arm, a second lifting arm movably connected to the top of the first electric hydraulic cylinder, the bottom end of the second lifting arm movably connected to the top of the first lifting arm, a second electric hydraulic cylinder movably connected to the bottom end of the second lifting arm, a telescopic arm movably connected to one end of the second electric hydraulic cylinder, an electric telescopic hydraulic rod installed on the top of the telescopic arm, and a lifting grab provided at one end of the electric telescopic hydraulic rod.
[0011] Preferably, the interlocking mechanism includes a device base fixedly connected to the top of the flatbed crane base. Limiting slide shells are fixedly connected to both sides of the top of the device base. A gear rack is fixedly connected to the inner side of the limiting slide shell. A gear that limits the limiting slide shell is meshed with one side of the gear rack. One side of the gear is fixedly connected to the transmission end of the drive motor. A movable seat is fixedly connected to the top of the drive motor. The bottom sides of the movable seat are slidably connected to both sides of the device base. A mounting bracket is installed on the top of the device base.
[0012] Preferably, a second drive motor is fixedly connected inside the mounting frame. A main gear is fixedly connected to the transmission end of the second drive motor. A driven gear is connected to the outer side of the main gear via a chain drive. A small meshing wheel is fixedly connected to one side of the driven gear. A rack is meshed to one side of the small meshing wheel. A lifting seat is fixedly connected to the top of the rack. The bottom end of the lifting seat is slidably connected to a guide rod provided on the side of the mounting frame. A first electric telescopic rod is fixedly connected to one side of the lifting seat. A backing plate is fixedly connected to the telescopic end of the first electric telescopic rod. A pin and a cylinder are fixedly connected to one side of each backing plate.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This utility model provides a wireless interlocking control device for a rail-mounted flatbed crane and railcar traction system:
[0015] 1. Add a normally open limit switch interlock and a wireless transmission control mechanism to the interlocking mechanism. After the rail-mounted flatbed crane completes the lifting operation, the operator fixes the lifting grab on the rail-mounted flatbed crane arm mechanism to the pin and the plug, forming a normally closed interlock. The signal is transmitted to the control panel through the signal receiving module and the signal transmission module. At the same time, to remind the driver again, a warning light is added to the control panel. When the crane starts working, the warning light starts flashing to remind the operator to pay attention to personal safety. After the operation is completed, the operator fixes the rail-mounted flatbed crane arm to the upper limit of the pin and the plug. After the pin is inserted, the normally open limit switch interlock is disengaged, and the warning light 602 goes out. At this time, the operation of the flatbed crane arm is confirmed to be completed through double prevention, and it is then retracted and fixed in place.
[0016] 2. By engaging the drive motor, gears, and rack, the moving seat slides left and right along the limiting slide groove shell. When adjusted to the position where the grab can be interlocked, the rotation of the second drive motor drives the gear, causing the main gear to drive the small meshing wheel on one side of the gear to rotate under the meshing transmission of the chain. This facilitates engagement and movement with the rack, causing the lifting seat to rise and fall along the guide rod. The extension and retraction of the first electric telescopic rod on the side of the back plate facilitates the locking and interlocking of the grab between the pin and the cylinder on the back plate. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is one of the structural schematic diagrams of this utility model;
[0019] Figure 3 This is a schematic diagram of the mounting bracket structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the control mechanism structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the limiting slide shell structure of this utility model;
[0022] Figure 6 This is a schematic diagram of the insert structure of this utility model;
[0023] Figure 7 This is a schematic diagram of the control panel structure of this utility model.
[0024] In the diagram: 1. Flatbed crane base; 101. Control panel housing; 2. Control mechanism; 201. Protective housing; 202. Fixing device plate; 203. Signal receiving module; 204. Signal transmission module; 205. PLC controller;
[0025] 3. Lifting boom mechanism; 301. Fixed base; 302. Electric base; 303. First lifting boom; 304. First electric hydraulic cylinder; 305. Second lifting boom; 306. Second electric hydraulic cylinder; 307. Telescopic boom; 308. Electric telescopic hydraulic rod;
[0026] 4. Interlocking mechanism; 401. Device base; 402. Limiting slide housing; 403. Gear rack; 404. Insert cylinder; 405. Gear; 406. Drive motor; 407. Moving seat; 408. Mounting bracket; 409. Second drive motor; 4010. Main gear; 4011. Small meshing wheel; 4012. Rack; 4013. Lifting seat; 4014. Guide rod; 4015. First electric telescopic rod; 4016. Backing plate; 4017. Pin; 5. Lifting grab;
[0027] 6. Control panel; 601. Fault isolation switch; 602. Warning light; 603. Operating status indicator light. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0030] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] like Figures 1-7 As shown, the present invention proposes a wireless interlocking control device for a rail flatbed crane and railcar traction system, including a flatbed crane base 1, a control panel housing 101 at one end of the flatbed crane base 1, a control mechanism 2 on one side of the control panel housing 101, a boom mechanism 3 at one end of the top of the flatbed crane base 1, an interlocking mechanism 4 at the other end of the flatbed crane base 1, and a battery fixedly connected to one side of the flatbed crane base 1.
[0033] The control mechanism 2 includes a protective shell 201 fixedly connected to one side of the control panel housing 101. A fixing plate 202 is installed inside the protective shell 201. A signal receiving module 203 is fixedly connected to the top of the fixing plate 202. A signal transmission module 204 is provided on one side of the signal receiving module 203. A PLC controller 205 is provided on one side of the signal transmission module 204.
[0034] In practical use, a normally open limit switch interlock and a wireless transmission control mechanism 2 are added to the interlocking mechanism 4. After the rail-mounted flatbed crane completes its lifting operation, the operator fixes the lifting grab 5 on the rail-mounted flatbed boom mechanism 3 to the pin 4017 and the plug 404, forming a normally closed interlock. The signal is then transmitted to the control panel 6 through the signal receiving module 203 and the signal transmission module 204. Simultaneously, to further remind the driver, a warning light 602 is added to the control panel 6. When the crane starts working, the warning light 602 flashes to remind the operator to pay attention to personal safety. After the operation is completed, the operator fixes the rail-mounted flatbed boom to the upper limit of the pin 4017 and the plug 404. After insertion, the normally open limit switch interlock is disengaged, and the warning light 602 goes out. At this point, the double precaution confirms that the flatbed boom operation is complete, and it is then retracted and secured in place.
[0035] A control panel 6 is installed on the top of the control panel housing 101. A fault isolation switch 601 is mounted on the surface of the control panel 6. A warning light 602 is fixedly connected to one side of the fault isolation switch 601. A working status indicator light 603 is installed on one side of the warning light 602.
[0036] In practical use, when the flatbed crane retracts its boom and the safety pin is locked at pin 4017 and plug 404, the wireless signal is transmitted to the terminal through the signal transmission module 204, causing the normally open interlock of its signal receiving module 203 to close, connecting the railcar gearbox control circuit, and the railcar can then engage gears and move normally, meeting the driving requirements. Furthermore, a fault isolation switch 601 is added to the railcar driver's console. When the wireless connection between the flatbed crane and the railcar traction system fails, the fault isolation switch 601 is switched to the fault position, preventing the system failure from causing the train to be unable to move and affecting mainline operations. Simultaneously, a working status indicator light 603 is installed on the railcar control panel to remind the driver to confirm the working status of the wireless connection between the flatbed crane and the railcar traction system.
[0037] The boom mechanism 3 includes a fixed base 301 fixedly connected to the top of the flatbed crane base 1, an electric base 302 fixedly connected to the top of the fixed base 301, a first lifting arm 303 fixedly connected to the top of the electric base 302, a first electric hydraulic cylinder 304 movably connected to the bottom end of the first lifting arm 303, a second lifting arm 305 movably connected to the top of the first electric hydraulic cylinder 304, the bottom end of the second lifting arm 305 movably connected to the top of the first lifting arm 303, a second electric hydraulic cylinder 306 movably connected to the bottom end of the second lifting arm 305, a telescopic arm 307 movably connected to one end of the second electric hydraulic cylinder 306, an electric telescopic hydraulic rod 308 installed on the top of the telescopic arm 307, and a grab 5 provided at one end of the electric telescopic hydraulic rod 308.
[0038] In practical use, the first electric hydraulic cylinder 304 and the second electric hydraulic cylinder 306 installed on the first lifting arm 303 and the second lifting arm 305 cooperate to facilitate the adjustment of the telescopic arm 307. By adjusting the extension angle of the telescopic arm 307, the use of the grab 5 is facilitated. The horizontal height of the grab 5 is adjusted by the extension and retraction of the electric telescopic hydraulic rod 308.
[0039] The interlocking mechanism 4 includes a device base 401 fixedly connected to the top of the flatbed crane base 1. Limiting slide shells 402 are fixedly connected to both sides of the top of the device base 401. A gear rack 403 is fixedly connected to the inner side of the limiting slide shell 402. A gear 405 that limits the limiting slide shell 402 is meshed with one side of the gear rack 403. One side of the gear 405 is fixedly connected to the transmission end of the drive motor 406. A movable seat 407 is fixedly connected to the top of the drive motor 406. The bottom sides of the movable seat 407 are slidably connected to both sides of the device base 401. A mounting bracket 408 is installed on the top of the device base 401.
[0040] A second drive motor 409 is fixedly connected inside the mounting bracket 408. A main gear 4010 is fixedly connected to the transmission end of the second drive motor 409. A driven gear is connected to the outside of the main gear 4010 via a chain drive. A small meshing wheel 4011 is fixedly connected to one side of the driven gear. A rack 4012 is meshed to one side of the small meshing wheel 4011. A lifting seat 4013 is fixedly connected to the top of the rack 4012. The bottom end of the lifting seat 4013 is slidably connected to a guide rod 4014 provided on the side of the mounting bracket 408. A first electric telescopic rod 4015 is fixedly connected to one side of the lifting seat 4013. A backing plate 4016 is fixedly connected to the telescopic end of the first electric telescopic rod 4015. A pin 4017 and a plug 404 are fixedly connected to one side of each backing plate 4016.
[0041] In practical use, the rotation of the drive motor 406 drives the gear 405 and the rack 403 to mesh and move, so that the moving seat 407 can slide left and right along the limiting slide shell 402 to adjust its position. When it is adjusted to the position that can interlock the grab 5, the rotation of the second drive motor 409 drives the gear 405, so that the main gear 4010 drives the small meshing wheel 4011 on one side of the gear to rotate under the meshing transmission of the chain, so as to facilitate meshing and moving with the rack 4012, and drive the lifting seat 4013 to adjust its height along the guide rod 4014. The extension and retraction of the first electric telescopic rod 4015 on the side of the back plate 4016 facilitates the locking between the pin 4017 and the insert 404 on the back plate 4016 to limit and interlock the grab 5.
[0042] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
[0043] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A wireless interlocking control device for a rail flatbed crane and rail car haulage system, comprising a flatbed crane bed (1), characterized in that, One end of the flat plate crane base (1) is provided with a console shell (101), one side of the console shell (101) is provided with a control mechanism (2), one end of the top of the flat plate crane base (1) is provided with a boom mechanism (3), the other end of the flat plate crane base (1) is provided with an interlocking mechanism (4), one side of the flat plate crane base (1) is fixedly connected with a storage battery.
2. A wireless interlocking control device for a rail panel crane and railcar towing system according to claim 1, characterized in that: The control mechanism (2) comprises a protective shell (201) fixedly connected with one side of the console shell (101), a fixing device plate (202) is installed in the protective shell (201), a signal receiving module (203) is fixedly connected to the top of the fixing device plate (202), a signal transmission module (204) is arranged on one side of the signal receiving module (203), and a PLC controller (205) is arranged on one side of the signal transmission module (204).
3. A wireless interlocking control device for a rail flat car hoist and rail car towing system according to claim 1, wherein: The top of the console shell (101) is provided with a control panel (6), and the surface of the control panel (6) is provided with a fault isolation switch (601), one side of the fault isolation switch (601) is fixedly connected with a warning lamp (602), and one side of the warning lamp (602) is provided with a working state indicating lamp (603).
4. A wireless interlocking control device for a rail panel crane and railcar haulage system according to claim 1, characterized in that: The boom mechanism (3) comprises a fixed base (301) fixedly connected with the top of the flat plate crane base (1), an electric seat (302) fixedly connected to the top of the fixed base (301), a first lifting arm (303) fixedly connected to the top of the electric seat (302), a first electric hydraulic cylinder (304) movably connected to the bottom end of the first lifting arm (303), a second lifting arm (305) movably connected to the top of the first electric hydraulic cylinder (304), the bottom end of the second lifting arm (305) movably connected with the top of the first lifting arm (303), a second electric hydraulic cylinder (306) movably connected to the bottom end of the second lifting arm (305), a telescopic arm (307) movably connected to one end of the second electric hydraulic cylinder (306), an electric telescopic hydraulic rod (308) installed on the top of the telescopic arm (307), and a lifting grab (5) arranged at one end of the electric telescopic hydraulic rod (308).
5. A wireless interlocking control device for a rail panel crane and railcar haulage system according to claim 1, characterized in that: The interlocking mechanism (4) comprises a device seat (401) fixedly connected to the top of the flat plate crane base (1), limit slide groove shells (402) fixedly connected to the top of the device seat (401), gear strips (403) fixedly connected to the inner sides of the limit slide groove shells (402), gear wheels (405) engaged with the limit slide groove shells (402) and arranged on one side of the gear strips (403), the drive motor (406) fixedly connected with the transmission end of the gear wheels (405), a moving seat (407) fixedly connected to the top of the drive motor (406), and the moving seat (407) slidably connected with the two sides of the device seat (401) at the bottom end, and a mounting rack (408) installed on the top of the device seat (401).
6. A wireless interlocking control device for a rail panel crane and railcar towing system according to claim 5, characterized in that: The inside of mounting frame (408) is fixedly connected with second driving motor (409), the transmission end of second driving motor (409) is fixedly connected with main gear (4010), the outside of main gear (4010) is connected with from gear through chain drive, one side of from gear is fixedly connected with small meshing wheel (4011), one side of small meshing wheel (4011) is meshedly connected with rack (4012), the top of rack (4012) is fixedly connected with lifting seat (4013), the bottom end of lifting seat (4013) is slidably connected with guide rod (4014) arranged on the side of mounting frame (408), one side of lifting seat (4013) is fixedly connected with first electric telescopic rod (4015), the telescopic end of first electric telescopic rod (4015) is fixedly connected with backboard (4016), one side of each backboard (4016) is fixedly connected with bolt (4017) and plug cylinder (404) respectively.