Pedal system for a rail vehicle

Abstract

The application discloses a kind of pedal systems for rail vehicles, it is related to rail transport technical field, including two groups of board main body being oppositely arranged, board main body both ends fixed guide slope, the installation slot is arranged along length direction in board main body top, multiple groups of boost assembly are assembled equidistantly in installation slot;Boost assembly includes unit board and the base shaft below it, and base shaft is rotatably connected to the inner wall of installation slot by torsional spring.The application is improved to the problems in prior art, such as wheelchair needs additional thrust to overcome slope resistance when going uphill, and wheelchair is prone to lateral slip risk when thrust control is insufficient, etc., because carriage floor is generally higher than platform ground, and pedal is laid in inclined state.The application has the advantages of forming acute angle slot dynamically by unit board to realize wheelchair bidirectional limiting anti-skid, while linkage hydraulic boost mechanism actively applies forward thrust, reduces the strength of manual pushing to enhance traffic safety, improves the efficiency of passenger getting on and off rail vehicle, etc.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, specifically to a pedal system for rail vehicles. Background Technology

[0002] Rail vehicles refer to all means of transportation that rely on dedicated tracks, encompassing both passenger and freight transport functions. They are a core component of rail transit systems. Based on application scenarios and technical characteristics, and according to their purpose and features, they can be further subdivided into railway vehicles, including traditional railway locomotives and intercity trains; urban rail transit vehicles, such as subways, light rail, monorails, and modern trams; and rail engineering vehicles, such as track inspection vehicles and maintenance vehicles.

[0003] The door treads of rail vehicles are key devices connecting the car floor and the platform. Their core functions include filling the gap between the car and the platform, preventing passengers from stepping into empty spaces, and reducing the height difference between the car floor and the platform through height or angle adjustments.

[0004] Currently, the ramps are manually laid out by staff on the platform, connecting the ramps between the carriage and the platform floor. However, the floor inside the carriage is generally higher than the platform floor, so the ramps are placed at an angle. Wheelchair users need to apply additional force to overcome the slope resistance when moving uphill. This design poses a significant obstacle for wheelchair users, such as the risk of trajectory deviation. If the precision of the thrust direction control is insufficient, the wheelchair is prone to lateral slippage on the slope, causing the passage path to deviate. At the same time, the operation time increases the train's stopping time. The risk of deviation directly threatens passenger safety, reduces the overall operational efficiency of the system, and thus affects the efficiency of vehicle operation.

[0005] To address the above technical problems, this invention discloses a pedal system for rail vehicles. This invention has the advantages of dynamically forming acute-angle grooves on unit plates to achieve bidirectional wheelchair limiting and anti-slip, while simultaneously linking a hydraulic booster mechanism to actively apply forward thrust, thereby enhancing traffic safety, reducing the intensity of manual pushing, and improving the efficiency of boarding and alighting passengers in rail vehicles. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a pedal system for rail vehicles. This system addresses the technical problems in the prior art, where the car floor is generally higher than the platform floor, and the pedals are laid in an inclined state. This results in wheelchairs needing additional pushing force to overcome slope resistance when moving up, and the risk of lateral slippage when the pushing force is insufficient. This invention features the advantage of dynamically forming acute-angle grooves on unit plates to achieve bidirectional wheelchair limiting and anti-slip, while simultaneously linking a hydraulic booster mechanism to actively apply forward thrust. This enhances traffic safety, reduces the intensity of manual pushing, and improves the efficiency of boarding and alighting passengers in rail vehicles.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a tread system for rail vehicles, comprising two sets of plate bodies arranged opposite to each other, guide ramps fixed at both ends of the plate bodies, and an installation groove provided on the top of the plate bodies along the length direction, wherein multiple sets of booster components are equidistantly assembled in the installation groove;

[0008] The booster assembly includes a unit plate and a base shaft located below it. The base shaft is rotatably connected to the inner wall of the mounting groove by a torsion spring, and the unit plate is fixed to the outer wall of the base shaft by at least three sets of reinforcing arms.

[0009] As a preferred technical solution, a clearance groove is formed on the upper surface of the unit plate, and a unit frame composed of two anti-slip plates is provided in the clearance groove. One end of the unit frame is rotatably connected to the clearance groove through a shaft, and the bottom of the other end is connected to a constraint piece. A limiting groove is formed on the bottom of the unit plate corresponding to the position of the constraint piece. A telescopic rod for driving the unit frame to be pushed upward is installed in the limiting groove. One end of the telescopic rod is rotatably set in the limiting groove, and the other end is rotatably connected to the inner wall of the unit frame.

[0010] As a preferred technical solution, a paddle is fixed to the outer wall of the base shaft, the triggering direction of the paddle is linked to the rotation direction of the base shaft, and a pressurizing assembly is provided in the mounting groove. The pressurizing assembly includes a piston and a traction plate, and the traction plate is pushed by the paddle to drive the piston to move.

[0011] As a preferred technical solution, the pressurization component is connected to the telescopic rod through a hose. When the piston is displaced, hydraulic oil is driven to enter the telescopic rod through the hose, pushing the telescopic rod to extend.

[0012] As a preferred technical solution, when the telescopic rod extends, it drives the unit frame to rotate around the shaft as the center, causing the middle of the unit frame to bulge to form a triangular truncated pyramid, and the constraint piece slides in the limiting groove.

[0013] As a preferred technical solution, the anti-slip plate is detachably installed on the positioning rectangular frame at the top of the unit frame, and the surface of the anti-slip plate is provided with anti-slip texture.

[0014] As a preferred technical solution, the two sets of plate bodies are hinged together by connecting edge strips, the plate body, the guide ramp and the connecting edge strip are integrally formed, and the bottom of the guide ramp is attached with an anti-slip pad.

[0015] As a preferred technical solution, limiting frames are provided on both sides of the main body of the board, with handles installed on the outer side of the limiting frames and multiple sets of ball bearings distributed along the length direction on the inner side.

[0016] As a preferred technical solution, an elastic sealing strip is provided between the adjacent unit plates.

[0017] As a preferred technical solution, a support bar is provided at the end of the mounting groove, and the support bar is located below the edge unit plate.

[0018] In summary, the present invention has the following main beneficial effects:

[0019] This invention utilizes multiple sets of unit plates located on the top of the main body of the board. When the wheels of a wheelchair pass over the top of each set of unit plates, adjacent sets of unit plates rotate relative to each other and form an acute-angle groove. At this time, the adjacent sets of unit plates contact the front and rear of the wheels and play an anti-backward role. This allows wheelchair passengers to manually apply external force to the wheels to pass over the step, while the anti-slip plate generates a forward thrust on the wheelchair, thereby saving the external force required to push the wheels and allowing the wheelchair to quickly pass over the step, thus improving the efficiency of passengers getting on and off the vehicle.

[0020] This invention features reinforcing arms at the bottom of each unit plate. When the unit plate rotates and is tilted, the reinforcing arms at the bottom abut against the inside of the plate body, thereby increasing the weight that the unit plate can bear and preventing it from sinking or deforming downwards. This better assists wheelchairs in passing over the surface of the unit plate and getting on and off vehicles. At the same time, the sealing strip between adjacent units blocks dust and other impurities, thus preventing interference with the rotation of the unit plate. The limiting frames on both sides correct the tilting wheelchair as it passes over, allowing the wheelchair to safely pass over the pedal. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the unfolded body of the plate of the present invention;

[0022] Figure 2 This is a schematic diagram of the plate body and booster assembly structure of the present invention;

[0023] Figure 3 This is a structural diagram of the booster component of the present invention;

[0024] Figure 4 This is a schematic diagram of the anti-slip plate and positioning rectangular frame structure of the present invention;

[0025] Figure 5 This is a bottom view of the unit plate structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the end section of the unit plate of the present invention;

[0027] Figure 7 This is a schematic diagram of the unfolded structure of the two sets of positioning rectangles of the present invention;

[0028] Figure 8 This is a schematic diagram of the internal structure of the booster assembly of the present invention.

[0029] In the diagram: 100, main body of the plate; 110, limiting frame edge; 120, guide ramp; 130, connecting strip; 140, ball bearing; 150, sealing strip;

[0030] 200. Boosting component; 210. Unit plate; 211. Clearance groove; 212. Limiting groove; 213. Constraint plate; 214. Elastic rope; 220. Anti-slip plate; 221. Anti-slip texture; 230. Positioning rectangular frame; 231. Shaft; 240. Reinforcing arm; 250. Base shaft; 260. Pressurization component; 261. Pressurization frame; 262. Piston; 263. Connecting rod; 264. Traction plate; 265. Telescopic spring; 270. Telescopic rod; 280. Paddle; 290. Hose. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below. These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operation processes. However, the scope of protection of the present invention is not limited to the following embodiments. In the description of the present invention, words such as "front", "rear", "left", and "right" that indicate orientation or positional relationship 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0032] The embodiments of the present invention will now be described.

[0033] A pedal system for rail vehicles, such as Figures 1 to 8 As shown, it includes two sets of symmetrically arranged plate bodies 100. Each set of plate bodies 100 has a guide ramp 120 integrally connected to both ends. The top of the plate body 100 has an installation groove along its length direction, and multiple sets of booster components 200 are assembled in the installation groove at equal intervals.

[0034] Each booster assembly 200 includes a unit plate 210 mounted in a mounting slot. The upper surface of the unit plate 210 has a pre-drilled clearance groove 211. Two sets of anti-slip plates 220 are mounted within the clearance groove 211. The bottom of each anti-slip plate 220 is fitted with a positioning rectangular frame 230 connected to the clearance groove 211. A base shaft 250 is rotatably connected to the mounting slot below the unit plate 210. Three sets of reinforcing arms 240, fixed to the lower surface of the unit plate 210, are fixedly sleeved on the outer wall of the base shaft 250. The outer wall of the base shaft 250 is reinforced with a torsion spring. The reinforcing arms 240 near both ends of the base shaft 250 are equipped with pressure boosting components 260. The bottom of the unit plate 210 is provided with two sets of limiting grooves 212 that communicate with the clearance groove 211. Each set of limiting grooves 212 is equipped with a telescopic rod 270 that drives the two sets of positioning rectangular frames 230 to push upward. The outer wall of the base shaft 250 is fixedly fitted with a paddle 280 that drives the oil inside the pressure boosting component 260 to flow. The oil inside the pressure boosting component 260 flows into the telescopic rod 270 to push up the positioning rectangular frame 230.

[0035] The booster assembly 260 includes a booster assembly 260 fixed in the mounting groove. A piston 262 is assembled inside the booster assembly 260. A connecting rod 263 extending to the end face of the booster frame 261 is fixed to one end of the piston 262. A traction plate 264 cooperating with the paddle 280 is fixed to the end face of the connecting rod 263. A telescopic spring 265 is sleeved on the outer wall of the connecting rod 263 inside the booster frame 261. A matching channel is opened at the position where the booster frame 261 contacts the telescopic spring 265. The inner wall of the channel is provided with a sealing ring to prevent oil leakage. An air inlet is opened at the end of the booster frame 261 away from the traction plate 264.

[0036] The oil inlet chamber of the telescopic rod 270 is connected to the oil outlet of the booster frame 261 through the hose 290. The two ends of the telescopic rod 270 adopt a shaft pin hinge structure to achieve bidirectional rotation. Specifically, the lower end rotating joint of the telescopic rod 270 is such that one end of the telescopic rod 270 is rotatably connected to the inner wall of the limiting groove 212 through a pin, while the upper end rotating joint of the telescopic rod 270 is such that the other end of the telescopic rod 270 is rotatably connected to the inner wall of the positioning rectangular frame 230 through a pin.

[0037] Each set of clearance grooves 211 is equipped with a unit frame consisting of two positioning rectangular frames 230 hinged together. The unit frame achieves a composite motion trajectory through the following structure: one end is a fixed rotating end, specifically, one end of the unit frame is rotatably connected to the inner wall of the clearance groove 211 through a shaft 231, and the other end is a sliding constraint end, specifically, the other end of the unit frame is connected to a constraint piece 213, the constraint piece 213 is embedded in two sets of limiting grooves 212 to form a sliding pair, and the top of the constraint piece 213 is connected to an elastic rope 214, the other end of the elastic rope 214 is fixed to the bottom surface of the unit frame.

[0038] The platform staff unfolded the step (as per the instruction manual). Figure 1 As shown), the step is placed on the floor of the rail vehicle car and the platform floor, allowing wheelchair passengers to pass over the top of the step to get on and off the vehicle, thereby improving the efficiency of passengers getting on and off the vehicle.

[0039] When the wheelchair is pushed over the ramp, the wheels first contact the guide ramp 120 and roll along the ramp onto the upper surface of the main body 100. The weight of the wheelchair and the occupant causes the unit plate 210 and the reinforcing arm 240 to rotate around the base axis 250, compressing the torsion spring. The force of the torsion spring compression provides power for the subsequent unit plate 210 to recover, causing the unit plate 210 that the wheelchair has passed over to automatically rotate to a horizontal state. At this time, the adjacent sets of unit plates 210 rotate relative to each other and form an acute-angle groove (adjacent). The two sets of unit plates 210 rotate clockwise and counterclockwise respectively, with their upper surfaces inclined and forming an acute angle groove. At this time, the wheelchair wheel is in the acute angle groove (it is worth noting that the cross-section of the wheelchair wheel and the two sides of the cross-section are in the acute angle groove, not that the wheel is completely in the acute angle groove). After the rotation, the reinforcing arm 240 at the bottom of the unit plate 210 will abut against the inner wall of the mounting groove opened in the plate body 100, so that the unit plate 210 is in a non-suspended state, thereby improving the load-bearing strength of the unit plate 210.

[0040] (The side of the wheelchair wheel that rolls forward is called the front wheel surface, and the side of the wheelchair wheel that is closer to the rear push handle is called the rear wheel surface.) When the unit plate 210 in contact with the rear wheel surface is tilted, the paddle 280 fixedly sleeved on the outer wall of its base shaft 250 rotates synchronously and generates a lateral horizontal thrust on the traction plate 264 (as per the instruction manual). Figure 7 As shown, the traction plate 264 is only pushed when the paddle 280 rotates clockwise. The connecting rod 263 drives the piston 262 to move synchronously. The piston 262 pushes the oil in the booster frame 261 into the hose 290, and finally into the telescopic rod 270 to extend it. (The two sets of rotatingly connected positioning rectangular frames 230 form a unit frame in the relief groove 211.) The unit frame rotates around the shaft 231 as the center. At the same time, the middle part of the unit frame will be pushed downward, while the other end will slide along the lower inner wall of the relief groove 211 and approach the shaft 231. The constraint plate 213 slides between the limiting grooves 212 and is connected by the elastic rope 214. Therefore, the unit frame and the anti-slip plate 220 will form a triangular truncated pyramid in the relief groove 211 (as shown in the instruction manual). Figure 7 As shown, the rear wheel surface is propelled forward, causing the front wheel surface to roll towards the unit plate 210. The adjacent unit plates 210 rotate relative to each other and form an acute-angle groove, which in turn propelles the rear wheel surface. This process is repeated to propel the wheelchair, making it easier for the wheelchair to pass over the unit plate 210 and improving the efficiency of getting on and off the vehicle.

[0041] Please refer to this carefully. Figure 3 and Figure 4The anti-slip plate 220 is detachably fixed to the top of the positioning rectangular frame 230 by bolts. The upper surface of the anti-slip plate 220 is machined with anti-slip textures 221 at equal intervals. The anti-slip textures 221 form a micro-interlocking structure on the contact surface of the wheelchair tire, which increases the friction coefficient and prevents slippage.

[0042] Considering that the anti-slip texture 221 will wear out significantly after prolonged use, in order to reduce maintenance costs, a bolt-connected detachable connection is used. When the wear of the anti-slip texture 221 is significant in a certain area, a single anti-slip plate 220 can be replaced independently. This modular replacement solution reduces maintenance costs.

[0043] Please refer to this carefully. Figure 1 and Figure 2 The two sets of main plate bodies 100 are provided with connecting edge strips 130 on their adjacent sides. The main plate body 100, guide ramp 120 and connecting edge strip 130 are integrally cast by mold. The two sets of connecting edge strips 130 are connected by hinges. The lower surface of each set of guide ramp 120 is attached with anti-slip pads.

[0044] The guide ramp 120 allows the wheelchair to roll along its slope into the top of the main body 100, while the anti-slip pad at the bottom increases the coefficient of friction with the floor of the carriage and the platform, preventing the wheelchair from slipping when getting on and off the ramp. The one-piece cast structure increases the strength of the ramp and better supports the weight of the wheelchair and the person.

[0045] Please refer to this carefully. Figure 1 and Figure 2 Two sets of plate bodies 100 are fixed with a limiting frame edge 110 on the side that is far apart from each other. A handle is fixed on the outer wall of the limiting frame edge 110. A ball bearing 140 is fixed on the side of the limiting frame edge 110 that is close to the plate body 100. There are multiple sets of ball bearings 140 and they are evenly distributed along the length direction of the limiting frame edge 110.

[0046] The limiting frame 110 serves as a protective element on both sides of the main body 100, preventing the wheelchair from tilting and falling off the top of the main body 100. The ball bearings 140 guide the wheels of the wheelchair inward, which can correct the trajectory of the wheelchair in time and ensure that the wheelchair safely passes over the step.

[0047] Please refer to this carefully. Figure 2 A sealing strip 150 is fixed in the mounting groove between two adjacent unit boards 210. The sealing strip 150 is made of elastic rubber.

[0048] By using the sealing strip 150 to seal the gap between two adjacent sets of unit panels 210, it is possible to prevent the entry of dust and other debris, and at the same time, it will not interfere with the rotation of the two adjacent sets of unit panels 210.

[0049] Support bars are fixed at both ends of the mounting groove, and the support bars are located at the bottom of the edge unit plate 210;

[0050] The unit plate 210 at the edge position has a unidirectional rotation and tilting effect, which makes it easy for the wheels of the edge wheelchair to contact or separate from the guide ramp 120.

[0051] In use, when a wheelchair is pushed over the ramp, the wheels of the wheelchair first contact the guide ramp 120 and roll along the ramp onto the upper surface of the main body 100. The weight of the wheelchair and the weight of the occupant causes the unit plate 210 and the reinforcing arm 240 to rotate around the base axis 250 and compress the torsion spring. The force of the torsion spring compression provides power for the subsequent recovery of the unit plate 210, causing the unit plate 210 that the wheelchair passes over to automatically rotate to a horizontal state. At this time, the adjacent sets of unit plates 210 rotate relative to each other and form an acute-angle groove. Two adjacent sets of unit plates 210 rotate clockwise and counterclockwise respectively, with their upper surfaces inclined and forming an acute-angle groove. At this time, the wheelchair wheel is in the acute-angle groove (it is worth noting that the cross-section of the wheelchair wheel and the two sides of the cross-section are in the acute-angle groove, not that the wheel is completely in the acute-angle groove). After the rotation, the reinforcing arm 240 at the bottom of the unit plate 210 will abut against the inner wall of the mounting groove opened in the plate body 100, so that the unit plate 210 is in a non-suspended state, thereby improving the load-bearing strength of the unit plate 210.

[0052] (The side of the wheelchair wheel that rolls forward is called the front wheel surface, and the side of the wheelchair wheel that is closer to the rear push handle is called the rear wheel surface.) When the unit plate 210 in contact with the rear wheel surface is tilted, the paddle 280 fixedly sleeved on the outer wall of its base shaft 250 rotates synchronously and generates a lateral horizontal thrust on the traction plate 264 (as per the instruction manual). Figure 7 As shown, the traction plate 264 is only pushed when the paddle 280 rotates clockwise. The connecting rod 263 drives the piston 262 to move synchronously. The piston 262 pushes the oil in the booster frame 261 into the hose 290, and finally into the telescopic rod 270 to extend it. (The two sets of rotatingly connected positioning rectangular frames 230 form a unit frame in the relief groove 211.) The unit frame rotates around the shaft 231 as the center. At the same time, the middle part of the unit frame will be pushed downward, and the other end will slide along the lower inner wall of the relief groove 211 and approach the shaft 231. The constraint plate 213 slides between the limiting grooves 212 and is connected by the elastic rope 214. Therefore, the unit frame and the anti-slip plate 220 will form a triangular truncated pyramid in the relief groove 211 (as shown in the instruction manual). Figure 7As shown, the device generates a forward thrust on the rear wheel surface, causing the front wheel surface to roll towards the unit plate 210 on the front side. The adjacent unit plates 210 rotate relative to each other and form an acute-angle groove, which in turn generates a thrust on the rear wheel surface. This process is repeated multiple times to provide thrust to the wheelchair, making it easier for the wheelchair to pass over the unit plate 210 and improving the efficiency of getting on and off the vehicle. The parts of the device not shown are the same as or can be implemented using existing technology.

[0053] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit the utility model. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A tread system for rail vehicles, comprising two sets of tread bodies (100) arranged opposite to each other, with guide ramps (120) fixed at both ends of the tread bodies (100), characterized in that: The top of the plate body (100) is provided with an installation groove along the length direction, and multiple sets of booster components (200) are assembled in the installation groove at equal intervals; The booster assembly (200) includes a unit plate (210) and a base shaft (250) located below it. The base shaft (250) is rotatably connected to the inner wall of the mounting groove by a torsion spring. The unit plate (210) is fixed to the outer wall of the base shaft (250) by at least three sets of reinforcing arms (240). The unit plate (210) has a clearance groove (211) on its upper surface. The clearance groove (211) contains a unit frame consisting of two anti-slip plates (220). One end of the unit frame is rotatably connected to the clearance groove (211) via a shaft (231), and the other end is connected to a constraint plate (213) at its bottom. The unit plate (210) has a limiting groove (212) at its bottom corresponding to the position of the constraint plate (213). The limiting groove (212) is equipped with a telescopic rod (270) that drives the unit frame to lift upward. One end of the telescopic rod (270) is rotatably disposed in the limiting groove (212), and the other end is rotatably connected to the inner wall of the unit frame. A paddle (280) is fixed to the outer wall of the base shaft (250). The triggering direction of the paddle (280) is linked to the rotation direction of the base shaft (250). A booster assembly (260) is provided in the mounting groove. The booster assembly (260) includes a piston (262) and a traction plate (264). The traction plate (264) is pushed by the paddle (280) to drive the piston (262) to move. The pressurization assembly (260) is connected to the telescopic rod (270) through a hose (290). When the piston (262) is displaced, it drives hydraulic oil to enter the telescopic rod (270) through the hose (290) and pushes the telescopic rod (270) to extend. When the telescopic rod (270) extends, it drives the unit frame to rotate around the shaft (231) as the center, causing the middle of the unit frame to bulge to form a triangular truncated pyramid, and the constraint piece (213) slides in the limiting groove (212).

2. The treadmill system for rail vehicles according to claim 1, characterized in that: The anti-slip plate (220) is detachably installed on the positioning rectangular frame (230) at the top of the unit frame, and the surface of the anti-slip plate (220) is provided with anti-slip texture (221).

3. A treadmill system for rail vehicles according to claim 1, characterized in that: The two main body panels (100) are hinged together by connecting strips (130). The main body panels (100), guide ramps (120) and connecting strips (130) are integrally formed. Anti-slip pads are attached to the bottom of the guide ramps (120).

4. A treadmill system for rail vehicles according to claim 3, characterized in that: The plate body (100) is provided with limiting frame edges (110) on both sides. A handle is installed on the outer side of the limiting frame edge (110), and multiple sets of ball bearings (140) distributed along the length direction are provided on the inner side.

5. A treadmill system for rail vehicles according to claim 1, characterized in that: An elastic sealing strip (150) is provided between adjacent unit plates (210).

6. A treadmill system for rail vehicles according to claim 1, characterized in that: A support bar is provided at the end of the mounting groove, and the support bar is located below the edge unit plate (210).

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