Aeroengine flexible pulsating production line

Abstract

The application discloses an aero-engine flexible pulsation production line, which comprises a multi-degree-of-freedom assembly system, a truss system, a hoisting system and an electric control system, the multi-degree-of-freedom assembly system is hung on the truss system, the multi-degree-of-freedom assembly system can circularly flow along the guide rail of the truss system, the hoisting system is arranged above the truss system and the multi-degree-of-freedom assembly system, the electric control system supplies power and controls the multi-degree-of-freedom assembly system, and the hoisting system assists in hoisting the components of the work station of the production line. The application has the advantages of reasonable design, automatic circular flow through the cooperation of the truss system, the multi-degree-of-freedom assembly system, the hoisting system and the electric control system, change of the previous operation mode of 'from head to tail' in one work station, process segmentation, and solution of the problems of low automation degree, low assembly efficiency, unstable quality and the like in the aero-engine assembly process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aero-engine production, and in particular to a flexible pulsating production line for aero-engines. BACKGROUND

[0002] In the production of aero-engines, for example, the traditional fixed-position assembly process has low automation, low assembly efficiency, unstable quality, and difficulty in information tracing. Aero-engines are complex assemblies of multiple components, and the complex assembly process conflicts with the growing demand for aero-engines, making it impossible for the original production equipment and process mode to achieve a good balance between efficiency, quality, and capacity. Exploring a new generation of production line mode has become the only way for the development of the aero-engine manufacturing field. Pulsating production lines have the characteristics of digitization, automation, flexibility, and humanization, and can improve engine assembly capacity, shorten assembly time, and ensure product quality. They are an important means to break through the bottleneck of engine assembly and manufacturing. SUMMARY

[0003] The main purpose of the present application is to provide a flexible pulsating production line for aero-engines to improve engine assembly capacity, shorten assembly time, and ensure product quality.

[0004] To achieve the above-mentioned purpose, the present application provides a flexible pulsating production line for aero-engines, comprising a multi-degree-of-freedom assembly system, a truss system, a hoisting system, and an electric control system. The multi-degree-of-freedom assembly system is suspended on the truss system, and can circulate along the guide rail of the truss system. The hoisting system is arranged above the truss system and the multi-degree-of-freedom assembly system. The electric control system supplies power and controls the multi-degree-of-freedom assembly system. The hoisting system assists in hoisting the components of the workstations of the production line.

[0005] The truss system comprises a plurality of support columns, a load-bearing box beam, a docking turntable, and a turntable driving device.

[0006] The multi-degree-of-freedom assembly system comprises an engine fixing device, a turnover unit, a lifting unit, a roller block, a load-bearing frame, and a driving device.

[0007] The hoisting system comprises a plurality of support columns, a cantilever beam, a type rail trolley, and an electric hoist.

[0008] The electric control system comprises a current collector, a slide wire, and an electric control box.

[0009] Preferably, the load-bearing box girder is arranged at the top end of the support column, the docking rotary table is arranged on both sides of the load-bearing box girder, the docking rotary table and the load-bearing box girder form a closed ring track system, the output end of the rotary table driving device is connected with the docking rotary table, and the rotary table driving device controls the rotary table to rotate.

[0010] Preferably, the load-bearing box girder is composed of a main girder body, guide rails and a rack, the guide rails include upper guide rails and lower guide rails, the upper guide rails, the lower guide rails and the rack form a track system, the track system includes a front track system and a back track system, and the front track system is symmetrical to the back track system.

[0011] Preferably, the docking rotary table is arranged at both ends of the truss system, the docking rotary table adopts a cantilever rotary structure, the docking rotary table includes a rotary seat, rotary table upper guide rails, rotary table lower guide rails and a rotary rack, and the rotary table upper guide rails and the rotary table lower guide rails are respectively connected with the guide rails and the rack of the front and back of the load-bearing box girder at 0° and 180°.

[0012] Preferably, the vertical surfaces of the guide rail docking positions are all cut at an angle of 45°.

[0013] Preferably, the load-bearing frame is hung on the load-bearing box girder, the lifting unit is arranged on the load-bearing frame, the turnover unit is mounted on the lifting unit, the engine fixing device is tightly arranged on the turnover unit, the roller slider is arranged on the inner side of the load-bearing frame and abuts against the guide rail, and the driving device is engaged with the rack.

[0014] Preferably, the roller slider includes upper roller sliders and lower roller sliders, and the upper roller sliders and the lower roller sliders form a "V" type structure with the upper guide rails and the lower guide rails respectively.

[0015] Preferably, the roller slider is a four-roller structure.

[0016] Preferably, the support columns are arranged at the top side of the truss system, the cantilever beams are mounted at the top end of the support columns, the cantilever beams are provided with rigid tracks, the profile rail trolleys are slidingly arranged on the rigid tracks, and the electric hoists are arranged on the profile rail trolleys.

[0017] Preferably, the current collector is arranged on the load-bearing frame, the trolley line is arranged on the load-bearing box girder, the current collector is in contact with the trolley line, and the electric control box supplies power and controls the operation of each station system on the production line.

[0018] The beneficial effects that can be achieved by the present application are as follows: the present application is rationally designed, a truss system is used as support, a multi-degree-of-freedom assembly system can circularly flow along the guide rail of the truss system, the engine is clamped and fixed by the multi-degree-of-freedom assembly system, and the multi-degree-of-freedom assembly system is lifted, turned over and horizontally moved, so that the engine can finally realize pulsation operation between different workstations, the engine parts and complete machines in the assembly operation area can be assisted in hoisting and unloading by the hoisting system, the power supply and control stability of the multi-degree-of-freedom assembly system in the pulsation process are ensured by the electric control system, the automation of circular flow is realized, the operation mode of “from the beginning to the end” in one workstation in the past is changed, the pulsation and beat production of the engine assembly process is realized through process segmentation, and the problems of low automation degree, low assembly efficiency and unstable quality in the assembly process of the aero-engine are solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced below, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and other related drawings can also be obtained by those skilled in the art without creative labor on the premise of the drawings.

[0020] Figure 1 The structure schematic diagram of the present application is shown in the figure.

[0021] Figure 2 The structure schematic diagram of the truss system of the present application is shown in the figure.

[0022] Figure 3 The structure schematic diagram of the carrying box beam of the present application is shown in the figure.

[0023] Figure 4 The structure schematic diagram of the multi-degree-of-freedom assembly system of the present application is shown in the figure. Figure 3 The structure schematic diagram of the multi-degree-of-freedom assembly system of the present application is shown in the figure.

[0024] Figure 5 The structure schematic diagram of the docking turntable of the present application is shown in the figure. Figure 1 ;

[0025] Figure 6 The structure schematic diagram of the docking turntable of the present application is shown in the figure. Figure 2 ;

[0026] Figure 7 The structure schematic diagram of the multi-degree-of-freedom assembly system of the present application is shown in the figure. Figure 1 ;

[0027] Figure 8 The structure schematic diagram of the multi-degree-of-freedom assembly system of the present application is shown in the figure. Figure 2 ;

[0028] Figure 9 The structure schematic diagram of the hoisting system of the present application is shown in the figure.

[0029] Figure 10 The figure is a schematic diagram of the electric control system principle of the application.

[0030] In the figure: 1, truss system; 101, support column; 102, bearing box beam; 1021, main beam body; 1022, guide rail; 10221, upper guide rail; 10222, lower guide rail; 1023, rack; 103, docking rotary table; 1031, rotating seat; 1032, rotary table upper guide rail; 1033, rotary table lower guide rail; 1034, rotating rack; 104, rotary table driving device; 2, multi-degree-of-freedom assembly system; 201, engine fixing device; 202, overturning unit; 203, lifting unit; 204, roller block; 2041, upper roller block; 2042, lower roller block; 205, bearing frame; 206, driving device; 3, hoisting system; 301, support column; 302, cantilever beam; 303, profile rail trolley; 304, rigid rail; 305, electric hoist; 4, electric control system; 401, current collector; 402, sliding contact line. DETAILED DESCRIPTION

[0031] In order to better understand the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0032] It should be understood that the specific embodiments described herein are merely intended to explain the present application and should not be used to limit the present application.

[0033] It should be noted that in the embodiments of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the coordinate system shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0036] The present application provides an aero-engine flexible pulse production line, referring to Figures 1-10 In the present embodiment, the aero-engine flexible pulse production line comprises a multi-degree-of-freedom assembly system 2, a truss system 1, a hoisting system 3 and an electric control system 4, the multi-degree-of-freedom assembly system 2 is suspended on the truss system 1, the multi-degree-of-freedom assembly system 2 can circularly flow along the guide rail 1022 of the truss system 1, the hoisting system 3 is arranged above the truss system 1 and the multi-degree-of-freedom assembly system 2, the electric control system 4 supplies power and controls the multi-degree-of-freedom assembly system 2, and the hoisting system 3 assists in hoisting the components of the workstations of the production line.

[0037] The truss system 1 comprises a plurality of support columns 101, a bearing box beam 102, a butt joint rotary table 103 and a rotary table driving device 104.

[0038] The multi-degree-of-freedom assembly system 2 comprises an engine fixing device 201, a turnover unit 202, a lifting unit 203, a roller block 204, a bearing frame 205 and a driving device 206.

[0039] The hoisting system 3 comprises a plurality of support columns 301, a cantilever beam 302, a profile rail trolley 303 and an electric hoist 305.

[0040] The electric control system 4 comprises a current collector 401, a slide contact line 402 and an electric control box.

[0041] In the embodiment, when the multi-degree-of-freedom assembly system 2 is suspended on the truss system 1, the multi-degree-of-freedom assembly system 2 is powered and controlled by the electric control system 4, the hoisting system 3 is arranged above the truss system 1 and the multi-degree-of-freedom assembly system 2, and the hoisting system 3 assists in hoisting the parts of each station of the production line to meet the process requirements of forward, backward, left, right, upward and downward movement in the assembly process. Meanwhile, the hoisting system 3 can also hoist the engine whole machine off line. Under the driving of the driving device, the multi-degree-of-freedom assembly system 2 can flow in the air and pulsate between stations along the guide rail of the truss system 1 to complete the flexible pulsation assembly production of the engine.

[0042] Specifically, the bearing box beam 102 is arranged at the top end of the support column 101, the docking turntable 103 is arranged at both sides of the bearing box beam 102, the docking turntable 103 and the bearing box beam 102 form a closed ring track system to realize the ring flow of the multi-degree-of-freedom assembly system 2, the output end of the turntable driving device 104 is connected with the docking turntable 103, the turntable driving device 104 controls the rotary motion of the docking turntable 103, after the engine whole machine is hoisted off line, the docking turntable 103 is controlled to rotate by 180° through the turntable driving device 104, the multi-degree-of-freedom assembly system 2 is switched from the front side track to the back side track, and then enters the next pulsation assembly.

[0043] Specifically, the bearing box beam 102 is composed of a main beam body 1021, a guide rail 1022 and a rack 1023. The guide rail 1022 includes an upper guide rail 10221 and a lower guide rail 10222. The upper guide rail 10221, the lower guide rail 10222 and the rack 1023 form a track system. The track system includes a front side track system and a back side track system. The front side track system is symmetrical with the back side track system. The multi-degree-of-freedom assembly system 2 can run in the front side track system and the back side track system, so as to realize the circulation flow. The truss system adopts a design of “complete symmetry front and back, partial symmetry up and down”. The overall structure is compact. The guide rail 1022 and the rack 1023 required for the circulation flow of the front side and the back side of the line body are integrated on the bearing box beam 102, which greatly reduces the space occupied by the ring track system. In addition, the shape tolerance and dimensional accuracy required for the installation of the guide rail 1022 and the rack 1023 can be supported in the machining process, thereby effectively reducing the difficulty of debugging work in the assembly process.

[0044] Specifically, the docking rotary table 103 is arranged at two ends of the truss system 1, the docking rotary table 103 adopts a cantilever rotary structure, the docking rotary table 103 comprises a rotary seat 1031, an upper rotary guide rail 1032, a lower rotary guide rail 1033 and a rotary rack 1034, the upper rotary guide rail 1032 and the lower rotary guide rail 1033 are respectively opposite to the guide rail 1022 and the rack 1023 on the front and back of the load-bearing box beam 102 at 0° and 180°.

[0045] Further, the vertical surfaces of the guide rail 1022 docking position are all cut at an angle of 45°, so as to ensure the stability when the roller block passes through.

[0046] In the embodiment, the docking rotary table 103 rotates by adopting a servo motor + rotary drive mode, has the characteristics of high precision, can perform accurate control of the rotary position and overload protection, and further ensures the docking precision of the guide rail 1022 and the rack 1023, and the docking rotary table 103 and the guide rail 1022 docking end face on the load-bearing box beam 102 are all cut at an angle of 45°, the guide rail 1022 and the rack 1023 on both sides can form accurate docking at 0° and 180°, and finally realize the stability and reliability in the track switching process of the multi-degree-of-freedom assembly system 2.

[0047] Specifically, the load-bearing frame 205 is hung on the load-bearing box beam 102, the lifting unit 203 is arranged on the load-bearing frame 205, the turnover unit 202 is installed on the lifting unit 203, the engine fixing device 201 is tightly arranged on the turnover unit 202, the roller block 204 is arranged on the inner side of the load-bearing frame 205, and the roller block 204 is abutted with the guide rail 1022, the driving device 206 is engaged with the rack 1023, and the multi-degree-of-freedom assembly system 2 is hung on the load-bearing box beam 102 as a whole through the load-bearing frame 205, the roller block 204 is abutted with the guide rail 1022, and the driving device 206 is engaged with the rack 1023, under the driving of the driving device, the multi-degree-of-freedom assembly system 2 as a whole can move horizontally along the guide rail 1022 of the truss system 1 and pulsate in the work position.

[0048] In the embodiment, when performing the assembly operation, the engine case to be assembled is clamped on the engine fixing device 201, the engine fixing device 201 is connected with the turnover unit 202, the turnover unit 202 adopts a servo motor + rotary drive structure, can rotate 360° under the driving of the turnover unit 202, the turnover unit 202 is fixed on the lifting unit 203, the lifting unit 203 adopts a servo motor + T-shaped screw structure, and the lifting unit 203 can realize the lifting of the engine in the vertical direction, and the lifting and turnover processes all have the function of self-locking at any position, so as to ensure the safety and reliability of the lifting and turnover processes.

[0049] Specifically, the roller slider 204 includes an upper roller slider 2041 and a lower roller slider 2042, which form a "V" type structure with the upper guide rail 10221 and the lower guide rail 10222 respectively. After the roller slider 204 is assembled with the guide rail 1022, it is in a "A" type clamping state, that is, the upper roller slider 2041 is clamped in a "A" type with the upper guide rail 10221, and the lower roller slider 2042 is clamped in a "V" type with the lower guide rail 10222. This structure not only can withstand vertical downward force and bending moment, but also can effectively prevent derailment of the multi-degree-of-freedom assembly system 2 during operation.

[0050] Further, the roller slider 204 is a four-roller structure. By adopting the four-roller structure, the multi-degree-of-freedom assembly system 2 can be effectively prevented from derailing while ensuring stable operation along the guide rail 1022,

[0051] Specifically, the support column 301 is arranged on one side of the top of the truss system 1, the cantilever beam 302 is installed at the top end of the support column 301, the rigid track 304 is arranged on the cantilever beam 302, the profile rail trolley 303 is slidingly arranged on the rigid track 304, and the electric hoist 305 is arranged on the profile rail trolley 303. The hoisting system 3 can assist in hoisting the parts of the work station, meet the process requirements of forward, backward, left, right, up and down movement during assembly process, and can also hoist the engine whole machine off line.

[0052] Specifically, the current collector 401 is arranged on the bearing frame 205, the slide wire 402 is arranged on the bearing box beam 102, the current collector 401 is in contact with the slide wire 402, and the electric control box supplies power and controls the operation of each work station system on the production line.

[0053] In the embodiment, the electric control system 4 supplies power and transmits network signals to the multi-degree-of-freedom assembly system 2 through the slide wire 401. The network signal line is connected to the power bridge of each work station. A 1 master station + multiple slave station mode is adopted. The whole line body circulation part is divided into four parts, that is, the left and right turntables, the front line body on the assembly side, and the reverse line body on the return side. Each part is isolated for power supply. The total power supply adopts three-phase four-wire system, that is, the UVW phase + PE ground wire passes through the slide wire power supply end, and the network part uses 4-core signal line through the slide wire signal end. When the multi-degree-of-freedom assembly system passes through the four connection parts of work station 1 to work station 4, work station 4 to work station 2, work station 2 to work station 3, and work station 3 to work station 1, the power supply part and the signal part can be smoothly switched, so that the power receiver can normally operate and the communication connection is stable.

[0054] In this embodiment, the multi-degree-of-freedom assembly system 2 adopts double current collectors, and can smoothly switch the power supply part and the signal part during the circular flow, thereby ensuring normal operation and communication connection, and providing real-time fault prompt when any one of the multi-degree-of-freedom assembly systems 2 is short of phase or has voltage failure or overvoltage failure.

[0055] Working principle: In this embodiment, the pulsating production line is provided with five working positions, i.e., working position 1 to working position 5 from left to right. During assembly, the multi-degree-of-freedom assembly system 2 pulsates between the working positions from left to right. The multi-degree-of-freedom assembly system 2 is suspended on the truss system 1, and is powered and controlled by the electric control system 4. Under the driving of the driving device, the multi-degree-of-freedom assembly system 2 can flow in the air and pulsate between the working positions along the guide rail 1022 of the truss system 1. After the engine complete machine is completed at the working position 5, the multi-degree-of-freedom assembly system 2 can be rotated by 180° through the right butt joint turntable 103, so as to switch the multi-degree-of-freedom assembly system 2 from the front side track to the back side track. When the multi-degree-of-freedom assembly system 2 runs to the left side of the line body, the multi-degree-of-freedom assembly system 2 is rotated by 180° again through the left butt joint turntable 103, so as to switch the multi-degree-of-freedom assembly system 2 to the front side track again, and enter the next pulsating assembly.

[0056] The truss system 1 is designed reasonably. The multi-degree-of-freedom assembly system 2 can circularly flow along the guide rail 1022 of the truss system 1. The engine is clamped and fixed by the multi-degree-of-freedom assembly system 2, and is lifted, turned over and horizontally moved by the multi-degree-of-freedom assembly system 2. Finally, the engine can pulsate between different working positions. The engine parts and complete machine in the assembly operation area can be hoisted and unloaded by the hoisting system 3. The power supply and control stability of the multi-degree-of-freedom assembly system 2 during the pulsation process are ensured by the electric control system 4. The automation of the circular flow is realized. The previous operation mode of “from the beginning to the end” in one working position is changed. The pulsating and rhythmic production of the engine assembly process is realized through process segmentation. The problems of low automation degree, low assembly efficiency and unstable quality in the assembly process of the aero-engine are solved.

[0057] In the description of the present specification, the description of the terms “one embodiment”, “some embodiments”, “an example”, “a specific example”, or “some examples” and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0058] The above merely provides the preferred embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent structure or equivalent flowchart transformation, or direct or indirect application in other related technical fields, which is made based on the contents of the present application specification and drawings, shall be included in the patent protection scope of the present application.

Claims

1. A flexible pulsed production line for aero-engines, characterized in that, It includes a multi-degree-of-freedom assembly system, a truss system, a hoisting system, and an electrical control system. The multi-degree-of-freedom assembly system is suspended on the truss system and can rotate in a circle along the guide rails of the truss system. The hoisting system is located above the truss system and the multi-degree-of-freedom assembly system. The electrical control system supplies power and controls the multi-degree-of-freedom assembly system. The hoisting system assists in hoisting components at workstations on the production line. The truss system includes several support columns, load-bearing box beams, docking turntables, and turntable drive devices. The load-bearing box beams are located at the top of the support columns, and the docking turntables are located on both sides of the load-bearing box beams. The docking turntables and the load-bearing box beams form a closed circular track system. The output end of the turntable drive device is connected to the docking turntables, and the turntable drive device controls the docking turntables to perform rotational motion. The load-bearing box girder is composed of a main girder, guide rails and racks. The guide rails include an upper guide rail and a lower guide rail. The upper guide rail, lower guide rail and racks form a track system. The track system includes a front track system and a back track system. The front track system and the back track system are symmetrical. The docking turntable adopts a cantilevered rotary structure. The docking turntable includes a rotating seat, an upper guide rail, a lower guide rail, and a rotating rack. The upper guide rail and the lower guide rail are respectively connected to the guide rail and rack on the front and back of the load-bearing box beam at 0° and 180°. The multi-degree-of-freedom assembly system includes an engine fixing device, a tilting unit, a lifting unit, a roller slider, a load-bearing frame, and a drive device; the roller slider includes an upper roller slider and a lower roller slider, and the upper roller slider and the lower roller slider respectively form a "V" shape with the upper guide rail and the lower guide rail; The hoisting system includes several support columns, cantilever beams, rail trolleys, and electric hoists; The electrical control system includes a current collector, a sliding contact line, and an electrical control box.

2. The flexible pulsed production line for aero-engines as described in claim 1, characterized in that, The vertical surfaces at the guide rail joints are all chamfered at 45°.

3. The flexible pulsed production line for aero-engines as described in claim 1, characterized in that, The load-bearing frame is hung on the load-bearing box beam, the lifting unit is set on the load-bearing frame, the tilting unit is installed on the lifting unit, the engine fixing device is fastened on the tilting unit, the roller slider is set on the inner side of the load-bearing frame and the roller slider abuts against the guide rail, and the drive device meshes with the rack.

4. The flexible pulsed production line for aero-engines as described in claim 1, characterized in that, The roller slider has a four-roller structure.

5. The flexible pulsed production line for aero-engines as described in claim 1, characterized in that, The supporting columns are all located on the top side of the truss system. The cantilever beam is installed on the top of the supporting column. A rigid rail is provided on the cantilever beam. The rail trolley is slidably mounted on the rigid rail. The electric hoist is mounted on the rail trolley.

6. The flexible pulsed production line for aero-engines as described in claim 1, characterized in that, The current collector is mounted on the supporting frame, and the sliding contact line is mounted on the supporting box beam. The current collector is in contact with the sliding contact line, and the electrical control box provides power and control for the operation of each workstation system on the production line.

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