Dual voltage adapted cable conveyor

Abstract

The application discloses a double-voltage adaptive cable conveyor, aiming at solving the technical problem of poor universality of the existing conveyor caused by the change of operation voltage according to the construction power supply. By integrating the control module of the rectifier transformer and the multi-gear voltage selection switch, the problem of poor universality of the equipment caused by the mismatch of the construction power supply voltage is effectively solved. At the same time, through the elastic compression structure of the upper and lower conveying assemblies, the chain anti-sagging support design and the supporting roller and side wheel assemblies at the inlet and outlet, the adaptability, conveying stability and traction force of the equipment to the cables with different diameters are enhanced, the cable wear and deviation risk are reduced, and the safety, reliability and working condition adaptability of the equipment are improved as a whole.

Description

Technical Field

[0001] This application relates to the field of cable laying machinery and equipment technology, specifically to a dual-voltage adaptable cable conveyor. Background Technology

[0002] In cable laying projects, the versatility of cable conveyors has always been a focus of industry attention. Existing equipment not only has limitations in its mechanical structure, such as fixed conveying channels and difficulty in adapting to various cable diameters, but its electrical compatibility is also a significant weakness. Traditional cable conveyors in current technology typically employ a single-voltage design, with their drive motors only compatible with either 220V or 380V power supplies. However, in actual construction, the power voltage provided at different work sites often varies. This forces users to purchase multiple identical sets of equipment due to voltage differences, resulting in significant waste of equipment purchase costs and causing considerable inconvenience and difficulty in equipment deployment and use during on-site construction.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] In view of at least one of the above technical problems, this application discloses a dual-voltage adaptable cable conveyor, which aims to solve the technical problem that existing conveyors cannot change the operating voltage according to the construction power supply, resulting in poor versatility.

[0005] According to one aspect of this disclosure, a dual-voltage adaptable cable conveyor is provided, comprising a frame, an upper conveying assembly and a lower conveying assembly fixed relative to the frame and forming a conveying channel therebetween, a lifting assembly connected to the upper conveying assembly and used to adjust the height of the upper conveying assembly to control the size of the conveying channel, a transmission drive unit driven by the lower conveying assembly for driving cable conveying and including a drive motor, and a control module fixed to the frame; the control module includes a control panel that controls the operating state of the conveyor via a control circuit, the control circuit including a transformer unit for input voltage conversion, a bridge rectifier unit, a capacitor connected to the output terminal of the bridge rectifier unit, a motor controller for controlling the rotation speed and direction of the drive motor, a conveyor controller connected to the control terminal of the motor controller, and a voltage monitoring unit connected to the power supply terminal of the motor controller for monitoring the corresponding input voltage of the motor controller.

[0006] In some embodiments of this disclosure, the lower conveying assembly includes two transmission side plates fixed on the frame, a drive sprocket assembly rotatably disposed between the two transmission side plates and connected to the drive shaft of the conveying drive unit, and a passive sprocket rotatably disposed between the two transmission side plates and connected to the drive sprocket assembly via a chain.

[0007] In some embodiments of this disclosure, a support shaft is fixedly provided between the two transmission side plates and on the inner side of the chain, and a support plate that contacts the chain is fixed at the support shaft.

[0008] In some embodiments of this disclosure, the lifting assembly includes a mounting plate fixed on the frame and located above the lower conveying assembly, a nut sleeve fixed on the mounting plate, a lead screw threaded to the nut sleeve and with its bottom end penetrating the mounting plate, a handle fixedly provided at the top end of the lead screw, and an actuating plate fixedly provided at the bottom end of the lead screw via a bearing.

[0009] In some embodiments of this disclosure, the upper conveying assembly includes screws locked to both ends of the bottom of the actuating plate by nuts, a pressure roller frame connected to the bottom of the screws, a plurality of pressure rollers rotatably disposed on the pressure roller frame, and a spring sleeved on the screws and located between the pressure roller frame and the actuating plate.

[0010] In some embodiments of this disclosure, the frame is provided with corresponding idler roller assemblies and side wheel assemblies located at the inlet and outlet of the conveying channel; lifting rings are fixed on both sides of the bottom of the frame.

[0011] In some embodiments of this disclosure, the idler roller assembly includes a guide roller that is horizontally rotatably mounted on the frame, and the side wheel assembly includes a side wheel bracket with a plurality of mounting holes and two side wheels that are vertically rotatably mounted in the mounting holes.

[0012] In some embodiments of this disclosure, the control module further includes a housing covering the transmission drive unit, and the control panel is disposed on the housing.

[0013] In some embodiments of this disclosure, the transformer unit includes a voltage selection switch and a transformer. The voltage selection switch includes a high-voltage switch for corresponding connection between the AC input terminal and the high-voltage tap of the transformer, an open switch for corresponding disconnection between the AC input terminal and the transformer, and a low-voltage switch for corresponding connection between the AC input terminal and the low-voltage tap of the transformer. An over- or under-voltage protection device is provided between the low-voltage switch and the low-voltage tap.

[0014] In some embodiments of this disclosure, the conveyor controller is provided with a wireless control unit including a LOAR antenna and controls the operation of the conveyor via the wireless controller.

[0015] One or more technical solutions provided in the embodiments of this application have at least one of the following technical effects or advantages: By incorporating a control module with voltage selection switches and over / under voltage protection, the conveyor can adapt to construction power supplies of 380V or 220V, effectively solving the problem of poor equipment versatility caused by voltage mismatch and significantly improving the equipment's power supply versatility and safety. Simultaneously, the elastic clamping of the upper and lower conveyor components, the support plates preventing chain sagging, and the cooperation of idlers and side wheels at the inlet and outlet of the conveyor channel not only enhance adaptability to cables of different diameters, conveying stability, and traction, but also reduce cable wear and the risk of misalignment, protecting the cable sheath and ensuring smooth conveying. Furthermore, the lifting rings facilitate rapid hoisting and positioning of the equipment, further improving the convenience and efficiency of on-site construction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a dual-voltage adaptive cable conveyor in one embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the upper and lower conveying components of a dual-voltage adaptive cable conveyor in one embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the internal structure of the housing of a dual-voltage adaptive cable conveyor in one embodiment of this application.

[0019] Figure 4 This is an electrical schematic diagram of a dual-voltage adaptive cable conveyor in one embodiment of this application.

[0020] In the above figures, 1 is the base frame, 2 is the side support frame, 3 is the drive motor, 4 is the reducer, 5 is the transmission side plate, 6 is the support shaft, 7 is the drive sprocket assembly, 8 is the driven sprocket assembly, 9 is the chain, 10 is the chain block, 11 is the pressure roller frame, 12 is the pressure roller, 13 is the mounting plate, 14 is the nut sleeve, 15 is the lead screw, 16 is the handle, 17 is the action plate, 18 is the screw, 19 is the nut, 20 is the spring, 21 is the anti-slip sleeve, 22 is the spring cover, 23 is the guide roller, 24 is the side wheel bracket, 25 is the side wheel, 26 is the lifting ring, 27 is the rectifier transformer, 28 is the housing, 29 is the voltage selection switch, 30 is the control panel, 31 is the voltmeter, 32 is the bridge rectifier unit, 33 is the capacitor, 34 is the motor controller, 35 is the motor Hall sensor wire, 36 is the over / under voltage protector, 37 is the conveyor controller, and 38 is the LOAR antenna. Detailed Implementation

[0021] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application. Furthermore, the terms "connection" and "linkage" in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0022] Unless otherwise specified, the unit modules, components, structures, mechanisms, or sensors involved in the following embodiments are all commercially available products.

[0023] To better understand the technical solution of this application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] To address the technical problem of poor versatility caused by the inability of existing conveyors to change their operating voltage according to the construction power supply, this embodiment discloses a dual-voltage adaptable cable conveyor, such as... Figure 1 As shown, it includes a frame, an upper conveyor assembly, a lower conveyor assembly, a lifting assembly, and a conveyor drive unit.

[0025] The rack provides a mounting platform for other components. Specifically, in this embodiment, as shown... Figure 1 , 2As shown, the frame includes a base frame 1 and side frames 2 fixed on the base frame along the conveying direction. A lower conveying assembly and a conveying drive unit for driving the lower conveying assembly to convey cables are mounted on the base frame 1. Preferably, the conveying drive unit includes a drive motor 3 and a reducer 4. The drive motor is a 1500W 3200rpm DC brushless motor. Further, the lower conveying assembly includes two transmission side plates 5 symmetrically fixed to the base frame and located on the front side of the side frames. The two transmission side plates 5 are correspondingly connected by a support shaft 6 and rotatably mounted with a drive sprocket assembly 7 and a driven sprocket assembly 8. The drive sprocket assembly 7 includes a drive shaft rotatably disposed between the two transmission side plates 5 and a drive sprocket fixed on the drive shaft. One end of the drive shaft extends out of the transmission side plate 5 and connects to the drive shaft of the reducer 4 fixed on the base frame 1 and located on the rear side of the side frames 2. The driven sprocket assembly 8 includes a driven shaft rotatably disposed between the two transmission side plates 5 and a driven sprocket fixed on the driven shaft. The driving sprocket and the driven sprocket are connected by a chain 9. To better contact the cable and increase friction, the outer surface of the chain 9 is provided with several chain blocks 10 that contact the cable, thus improving conveying efficiency. However, when the conveyor is conveying the cable, due to the weight of the chain itself and the cable, excessive sagging may occur in the suspended section between the driving sprocket assembly 7 and the driven sprocket assembly 8. This can easily cause noise, tooth skipping, and other phenomena that may lead to equipment failure. To address this, the support shaft 6 is located inside the chain 9, and two support plates 10 are fixed on the support shaft 6 to support the chain 9, preventing excessive sagging of the chain 9 under heavy load, ensuring smooth transmission, and improving the service life of the lower conveyor assembly.

[0026] Considering that relying solely on the lower conveyor assembly to transport the cable results in a heavy cable, a small contact area, and insufficient positive pressure, which can easily lead to the lower conveyor assembly slipping and failing to provide effective traction, an upper conveyor assembly is provided directly above the lower conveyor assembly to provide a stable transport channel for the cable. In this embodiment, as shown... Figure 2As shown, it includes a pressure roller frame 11 and several pressure rollers 12 that are rotatably mounted on the pressure roller frame 11 in the same direction as the lower conveying component. Further, to provide different levels of clamping force according to the different diameters of the cables to achieve stable cable transport, a lifting component connected to the upper conveying component is provided on the side frame 2 to adjust the height of the upper conveying component and control the size of the conveying channel. Specifically, in this embodiment, the lifting component includes a mounting plate 13 fixed to the side frame 2 corresponding to the lower conveying component. A nut sleeve 14 is fixed at the center of the mounting plate 13. A screw 15 with its bottom end penetrating through the mounting plate 13 is internally threaded onto the nut sleeve 14. A handle 16 is fixed to the top of the screw 15, and an actuating plate 17 is fixedly connected to its bottom end via a bearing. Screws 18 are connected to both ends of the bottom of the actuating plate 17 and locked by nuts 19 located at the top of the actuating plate 17. The bottom end of the screw 18 is connected to the connecting shaft of the pressure roller frame 11, and a spring 20 is sleeved on the screw 18 and located between the actuating plate 17 and the pressure roller frame 11. Preferably, the handle 16 is a rotating rod, with anti-slip sleeves 21 at both ends for easy worker use; two spring caps 22 are fitted onto the screw 18, respectively abutting against both ends of the spring 20. Specifically, by rotating the handle 16, the worker can adjust the distance between the upper and lower conveying components via the lead screw 15 to control the conveying channel to accommodate the cable diameter; when the upper conveying component rises and lowers to press the cable, the spring 20 provides elastic buffering for the upper conveying component.

[0027] Furthermore, when the cable is fed into and pulled out of the conveyor channel formed between the upper and lower conveyor components, it will come into contact with the frame and rub against it, which can damage the frame and easily damage the cable sheath. Therefore, in this embodiment, as follows... Figure 1 As shown, roller assemblies are fixed on the base frame 1 at the inlet and outlet of the conveying channel. These assemblies include guide rollers 23 that are horizontally rotatable on the base frame 1 via corresponding mounting brackets. The guide rollers 23 lift the cable and roll it, reducing friction and allowing the cable to move smoothly with low resistance. Considering that the cable is unrestricted on the guide rollers 23, it is prone to deviation when being fed into and pulled out of the conveying channel, affecting the smoothness of the conveying. Therefore, side wheel assemblies are provided near the inlet and outlet of the conveying channel. These assemblies include two side wheels 25 that are vertically rotatable via side wheel brackets 24. To accommodate cables of different diameters, the side wheel brackets 24 have several mounting holes, allowing the spacing between the two side wheels 25 to be adjusted according to the cable diameter. Furthermore, lifting rings 26 are fixed on both sides of the base frame 1 corresponding to the inlet and outlet of the conveying channel. The lifting rings 26 provide convenient and reliable lifting and fixing pads for the entire conveyor. Combined with the lifting rings, the equipment can be easily moved and installed quickly using tools such as slings.

[0028] When using a conveyor, it must be connected to a power source with the same voltage as the conveyor's specifications. However, different construction sites have different power supply voltages, and the conveyor cannot be used if it cannot be connected to a power source with the same voltage. Therefore, in this embodiment, as follows... Figure 1 , 3 As shown, a control module is provided on the base frame 1 and located behind the side frame 2. This module includes a housing 28 mounted on the base frame 1 and covering the conveyor drive unit, and a control panel 30 mounted on the housing 28 and connected to an AC power input terminal for controlling the conveyor's operation. In this embodiment, as... Figure 4 As shown, the control circuit includes a transformer unit for input voltage conversion, electrically connected between the AC input terminal and the drive unit; a bridge rectifier unit; a capacitor electrically connected to the output terminal of the bridge rectifier unit; and a motor controller for controlling the rotation speed and direction of the drive motor. The capacitor is used to rectify and filter the AC input power supply, improving stability and power factor. In this embodiment, the specific specifications of the electrical components are as follows: Figure 4As shown, the transformer unit includes a voltage selection switch 29 and a transformer, which is a rectifier transformer 27. The motor controller 34 has a built-in 1500W Hall temperature sensor, which is connected to the drive motor 3 of the transmission drive unit via the motor Hall wire 35. The voltage selection switch 29 is located on the housing 28, and all other electrical components are installed inside the housing 28 to ensure the integrity of the cable conveyor. To check the current power supply voltage, a voltage monitoring unit is also provided on the housing 28, which is electrically connected to the power supply terminal of the motor controller 34 to monitor the corresponding input voltage of the motor controller 34. The voltage monitoring unit includes a voltmeter 31, which is a DC voltmeter. To facilitate monitoring and control of the cable conveyor's operation, a conveyor controller 37 is electrically connected to the control terminal of the motor controller 34. The conveyor controller 37 is equipped with a display screen connected to the power supply terminal of the motor controller 34, thus forming a human-machine interface for displaying information such as the current speed and direction status of the conveyor. The connection between the conveyor controller 37 and the motor controller 34 enables more flexible control of the conveyor, including speed adjustment, direction adjustment, and interference frequency setting. Specifically, the voltage selection switch 29 includes a 380V high-voltage setting for connection between the AC input terminal and the high-voltage tap of the rectifier transformer 27, a neutral setting for disconnection between the AC input terminal and the rectifier transformer 27, and a 220V setting for connection between the AC input terminal and the low-voltage tap of the rectifier transformer 27. This allows for switching the operating voltage according to the power supply voltage at the construction site, improving applicability. Simultaneously, an over / under voltage protector 36 is installed between the 220V setting and the low-voltage tap of the voltage selection switch 29. Therefore, before the conveyor is started, the voltage selection switch 29 is in the neutral setting, meaning the power supply is not connected and the usable power voltage is displayed on the voltmeter 31. When the power supply voltage is 220V and the voltage selection switch 29 is mistakenly set to the 380V setting, the over / under voltage protector 36 disconnects the power supply. When the power supply voltage is 380V and the voltage selection switch 29 is mistakenly set to the 220V setting, the power supply voltage is low, and the power supply is unaffected.

[0029] In another embodiment, the cable conveyor controller is equipped with a wireless control module including a LOAR antenna 38 and a wireless remote controller for the conveyor. At the same time, the remote control information of the current conveyor can be displayed through the conveyor controller 37 to realize functions such as multi-machine wireless connection and remote control of the conveyor.

[0030] Although some preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0031] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A dual-voltage adaptable cable conveyor, comprising a frame, an upper conveying assembly and a lower conveying assembly fixed relative to the frame and forming a conveying channel therebetween, a lifting assembly connected to the upper conveying assembly and used to adjust the height of the upper conveying assembly to control the size of the conveying channel, a conveying drive unit connected to the lower conveying assembly for driving cable conveying and including a drive motor, and a control module fixed to the frame; characterized in that, The control module includes a control panel that controls the operating status of the conveyor via a control circuit. The control circuit includes a transformer unit for input voltage conversion, a bridge rectifier unit, a capacitor connected to the output of the bridge rectifier unit, a motor controller for controlling the rotation speed and direction of the drive motor, a conveyor controller connected to the control terminal of the motor controller, and a voltage monitoring unit connected to the power supply terminal of the motor controller for monitoring the input voltage of the motor controller.

2. The dual-voltage adaptive cable conveyor according to claim 1, characterized in that, The lower conveying assembly includes two transmission side plates fixed on the frame, a drive sprocket assembly rotatably disposed between the two transmission side plates and connected to the drive shaft of the conveying drive unit, and a passive sprocket rotatably disposed between the two transmission side plates and connected to the drive sprocket assembly via a chain.

3. The dual-voltage adaptive cable conveyor according to claim 2, characterized in that, A support shaft is fixedly provided between the two transmission side plates and on the inner side of the chain, and a support plate that contacts the chain is fixed at the support shaft.

4. The dual-voltage adaptive cable conveyor according to claim 3, characterized in that, The lifting assembly includes a mounting plate fixed on the frame and located above the lower conveying assembly, a nut sleeve fixed on the mounting plate, a lead screw threaded into the nut sleeve and with its bottom end penetrating the mounting plate, a handle fixedly provided at the top of the lead screw, and an actuating plate fixedly provided at the bottom of the lead screw via a bearing.

5. The dual-voltage adaptive cable conveyor according to claim 4, characterized in that, The upper transmission assembly includes screws locked to both ends of the bottom of the action plate by nuts, a pressure roller frame connected to the bottom of the screws, a plurality of pressure rollers rotatably disposed on the pressure roller frame, and a spring sleeved on the screws and located between the pressure roller frame and the action plate.

6. The dual-voltage adaptive cable conveyor according to claim 1, characterized in that, The frame is equipped with corresponding idler roller assemblies and side wheel assemblies located at the inlet and outlet of the conveying channel; lifting rings are fixed on both sides of the bottom of the frame.

7. The dual-voltage adaptive cable conveyor according to claim 6, characterized in that, The idler roller assembly includes a guide roller that is horizontally rotatably mounted on the frame, and the side wheel assembly includes a side wheel bracket with several mounting holes and two side wheels that are vertically rotatably mounted in the mounting holes.

8. The dual-voltage adaptive cable conveyor according to claim 1, characterized in that, The control module also includes a housing covering the transmission drive unit, and the control panel is located on the housing.

9. The dual-voltage adaptive cable conveyor according to claim 8, characterized in that, The transformer unit includes a voltage selection switch and a transformer. The voltage selection switch includes a high-voltage switch for connecting the AC input terminal to the high-voltage tap of the transformer, an open switch for disconnecting the AC input terminal from the transformer, and a low-voltage switch for connecting the AC input terminal to the low-voltage tap of the transformer. An over- or under-voltage protection device is provided between the low-voltage switch and the low-voltage tap.

10. The dual-voltage adaptive cable conveyor according to claim 1, characterized in that, The conveyor controller is equipped with a wireless control unit including a LOAR antenna and controls the operation of the conveyor via the wireless controller.

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