Electric rubber roller shutter door for shot blasting of whole passenger car

Abstract

The utility model discloses a whole passenger car shot blasting electric rubber roller shutter door which comprises a door curtain winding drum installed on a door frame, a driving device used for driving the door curtain winding drum to rotate and a control device electrically connected with the driving device, and U-shaped guide rails distributed in the vertical direction are arranged on the two sides of the door frame respectively. The door curtain winding drum is horizontally distributed and rotationally installed above the two U-shaped guide rails, the door curtain winding drum is connected with a rubber door curtain in a winding mode, and the edges of the two sides of the free end of the rubber door curtain are slidably connected with the two U-shaped guide rails respectively; a guide roller which is installed in a free rotating mode is arranged between the door curtain winding drum and the upper portions of the two U-shaped guide rails, the guide roller and the door curtain winding drum are distributed in parallel, and the side wall of the guide roller abuts against the surface of the rubber door curtain. The utility model solves the problems that the electric door is easy to deform and damage due to the impact of steel grit in the shot blasting operation of the passenger car, the potential safety hazard of manual push-and-pull is large, the sealing performance is poor, and the like, and has the advantages of enhanced durability, high-frequency stable operation, environmental protection, standard reaching and the like.

Description

Technical Field

[0001] This utility model relates to the field of electric roller shutter technology, and in particular to an electric rubber roller shutter door for passenger vehicles that has undergone shot blasting. Background Technology

[0002] Shot blasting is a crucial process in the manufacturing and maintenance of railway carriages. It is used to clean dirt and old paint layers from the carriage surfaces and to roughen the surface in preparation for subsequent painting operations. Shot blasting operations are typically carried out in enclosed workshops to ensure a safe, environmentally friendly, and efficient working environment.

[0003] Currently, some existing shot blasting plants use electric roller shutters with rubber curtains. A motor at the top drives a rotating drum, causing the rubber curtain to rise and fall due to gravity, and then slide along guide rails to open and close the door. However, during this process, the rubber curtain, lacking proper guidance between the guide rails and the drum, is prone to bending and deforming outwards in the middle due to its own weight. This prevents it from maintaining a straight position, leading to wrinkles when rolled up and affecting sealing performance during descent. On one hand, this results in frequent malfunctions, necessitating manual operation, increasing worker workload and posing significant safety hazards. On the other hand, it leads to poor sealing, causing flying sand and steel shot, dust, and a harsh working environment that fails to meet environmental protection requirements.

[0004] With the continuous development of shot blasting technology, higher requirements have been placed on factory doors. Existing electric roller shutter doors can no longer meet the technical requirements of modern shot blasting operations in terms of structure, performance, and service life.

[0005] Therefore, given the many shortcomings of existing electric roller shutter doors, there is an urgent need to develop a new and reliable electric rubber roller shutter door to meet the operational needs of the shot blasting workshop for the entire train carriage. Utility Model Content

[0006] The purpose of this utility model is to provide an electric rubber roller shutter door for a bus that has been shot-blasted. By setting guide rollers that are parallel to the door curtain roller, the rubber door curtain can be pressed and pressed to keep it straight, thereby improving its durability. In addition, the rubber door curtain has good sealing performance through sliding cooperation with the U-shaped guide rail, which effectively solves the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A shot-peening electric rubber roller shutter door for passenger vehicles includes a curtain roller mounted on a door frame, a drive device for driving the curtain roller to rotate, and a control device electrically connected to the drive device. The door frame has U-shaped guide rails distributed vertically on both sides. The curtain roller is horizontally distributed and rotatably mounted above the two U-shaped guide rails. A rubber curtain is wound around the curtain roller, and the free ends of the rubber curtain are slidably connected to the two U-shaped guide rails on both sides. A freely rotatable guide roller is provided between the curtain roller and the upper part of the two U-shaped guide rails. The guide roller is parallel to the curtain roller, and its sidewall abuts against the surface of the rubber curtain.

[0009] Furthermore, the guide roller has roller shafts at both ends, and the roller shafts are connected to the door frame via bearing seats.

[0010] Furthermore, the rubber door curtain is provided with a plurality of reinforcing ribs at intervals along its length, and the length direction of the reinforcing ribs extends along the width direction of the rubber door curtain.

[0011] Furthermore, the distance between the lowest reinforcing rib on the rubber curtain and the bottom of the rubber curtain is greater than or equal to 100mm.

[0012] Furthermore, the reinforcing rib includes a first pressure plate and a second pressure plate located on both sides of the rubber curtain, and the first pressure plate and the second pressure plate are connected by a plurality of fasteners.

[0013] Furthermore, the rubber curtain is made of several rubber sheets spliced ​​together by adhesive bonding, with adjacent rubber sheets connected by an overlap groove.

[0014] Furthermore, a curtain guiding device is provided between the upper entrance of the U-shaped guide rail and the curtain roller. The curtain guiding device includes an arc-shaped roller fixing seat and several rollers rotatably mounted on the roller fixing seat. The several rollers are arc-shaped distributed on the roller fixing seat.

[0015] Furthermore, a fixing frame is provided on the upper part of the door frame, the fixing frame is provided with a base for installing the drive device and a support frame for supporting the door curtain roller; the two ends of the door curtain roller have roller shafts, and the roller shafts are connected to the support frame through bearing seats.

[0016] Furthermore, the driving device includes a drive motor, a reducer, and a coupling. The output end of the drive motor is connected to the input end of the reducer, the output end of the reducer is connected to one end of the coupling, and the other end of the coupling is connected to the roller shaft of the door curtain roller.

[0017] Furthermore, the control device includes an upper limit switch, a lower limit switch, and an electrical control box. The upper limit switch and the lower limit switch are respectively installed at both ends of one of the U-shaped guide rails. The edge of the rubber door curtain is provided with a trigger for triggering the upper limit switch and the lower limit switch. The side wall of the electrical control box is provided with an operation panel, which is provided with several buttons and indicator lights. The electrical control box is equipped with an electrical control module. The drive device, the upper limit switch, the lower limit switch, the buttons, and the indicator lights are respectively connected to the electrical control module.

[0018] Compared with the prior art, this utility model provides a whole-vehicle shot blasting electric rubber roller shutter door for passenger buses, which has the following beneficial effects:

[0019] (1) By setting guide rollers that are parallel to the curtain roller, the rubber curtain can be pressed and pressed, thereby keeping the rubber curtain in a straight state and improving its durability.

[0020] (2) The sealing performance is greatly improved. By adopting a combination structure of U-shaped guide rail and rubber curtain, a labyrinth seal is formed by sliding fit, which effectively prevents the leakage of flying sand and dust, greatly improves the working environment, and meets environmental protection requirements.

[0021] (3) By using a rubber sheet with a sandwich layer structure and a reinforcing rib as the door curtain material, the strength and wear resistance of the door curtain are significantly enhanced, the structural impact resistance is significantly improved, the impact of steel sand is effectively resisted, and the service life of the electric door is greatly extended.

[0022] (4) By optimizing the transmission system and installing the drive unit at a location far from the ground, the pollution of steel shot and dust is avoided, the failure rate is significantly reduced, and the operational stability and reliability of the drive unit are improved.

[0023] (5) By optimizing the electrical control system, the electrical control box is installed on the door frame, facilitating local operation and lifting control. The lifting speed is fast and the braking is reliable, fully meeting the high-frequency opening and closing requirements of modern shot blasting processes. Operators only need to press a button to control the door's lifting, eliminating the need for physical labor, greatly reducing labor intensity, and eliminating safety hazards.

[0024] (6) By using high-quality electric devices and accessories in conjunction with the rubber curtain with a sandwich layer structure, the durability of the electric rubber roller shutter door is significantly improved, enabling it to better adapt to harsh environments with moisture and dust. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram showing the connection between the drive unit and the door curtain roller.

[0028] Figure 3 This is a schematic diagram of the structure of a door curtain roller.

[0029] Figure 4 This is a schematic diagram of the guide roller structure;

[0030] Figure 5 This is a schematic diagram of the cross-section of the U-shaped guide rail;

[0031] Figure 6 This is a schematic diagram of the structure of a rubber door curtain;

[0032] Figure 7 for Figure 6 A cross-sectional view along the AA direction;

[0033] Figure 8 A schematic diagram showing how multiple rubber sheets are glued and spliced ​​together to form a rubber door curtain;

[0034] Figure 9 This is a schematic diagram of the curtain guide device.

[0035] Figure 10 for Figure 9 Cross-sectional view along the BB direction;

[0036] Figure 11 This is the electrical schematic diagram of this utility model.

[0037] Reference numerals: 1. Curtain roller; 11. Roller shaft; 2. Rubber curtain; 21. Rubber sheet; 211. Overlap groove; 22. Reinforcing rib; 221. First pressure plate; 222. Second pressure plate; 223. Fastener; 23. Trigger; 3. U-shaped guide rail; 4. Guide roller; 41. Roller shaft; 5. Curtain guide device; 51. Roller fixing seat; 511. Upper fixing plate; 512. Lower fixing plate; 513. Arc-shaped side plate; 514. Roller shaft; 52. Roller; 6. Fixing frame; 61. Base; 62. Support frame; 7. Bearing seat; 8. Drive device; 81. Coupling; 82. Reduction... Speed ​​controller; M1, drive motor; 9, control device; 91, electrical control box; 92, operation panel; SB0, stop button; SB1, up button; SB2, down button; HL1, up indicator light; HL2, down indicator light; HL3, power indicator light; SQ1, upper limit switch; SQ2, lower limit switch; QF0, connection switch; QF1, main power switch; FU1, first fuse; FU2, second fuse; FU3, third fuse; KM1, first AC contactor; KM2, second AC contactor; FR1, first thermal relay; FR2, second thermal relay; 10, door frame. Detailed Implementation

[0038] The technical solution of this utility model will be clearly and completely described below through detailed embodiments and in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0039] Please refer to Figures 1 to 11This embodiment provides an electric rubber roller shutter door for shot blasting of a passenger vehicle, including a curtain roller 1 mounted on a door frame 10, a drive device 8 for driving the curtain roller 1 to rotate, and a control device 9 electrically connected to the drive device 8. The door frame 10 has U-shaped guide rails 3 vertically distributed on both sides. The U-shaped guide rails 3 are made of 6mm A3 steel plates bent into a U-shaped cross-section. The curtain roller 1 is horizontally distributed and rotatably mounted above the two U-shaped guide rails 3. A rubber curtain 2 is wound around the curtain roller 1, and the free ends of the rubber curtain 2 are slidably connected to the two U-shaped guide rails 3. As an example, the effective connection length between the rubber curtain and the U-shaped guide rails is designed to be 100mm, and the fit gap is 15mm, thereby enabling the rubber curtain to slide and rise flexibly along the U-shaped guide rails to form a labyrinth seal, which has good sealing performance, prevents flying sand and dust from escaping, greatly improves the working environment, and meets environmental protection requirements. A freely rotatable guide roller 4 is installed between the upper part of the curtain roller 1 and the two U-shaped guide rails 3. The guide roller 4 is distributed parallel to the curtain roller 1, and its side wall abuts against the surface of the rubber curtain 2. By setting the guide roller parallel to the curtain roller, it is responsible for guiding the rubber curtain in the width direction during lifting and lowering to prevent lateral deformation. It can also press and hold the rubber curtain to keep it straight, thereby improving its durability.

[0040] In some specific implementation methods, refer to Figure 1 and Figure 4 The guide roller 4 has roller shaft portions 41 at both ends, which are connected to the door frame 10 via bearing seats 7. The bearings on the bearing seats allow the guide roller to rotate freely during the raising and lowering of the rubber door curtain, thus smoothly contacting and pressing the rubber door curtain and reducing wear between the guide roller and the rubber door curtain. As an example, the specifications of the guide roller 4 are as follows: Seamless steel pipes with a diameter of φ140×4mm are used for processing. The manufacturing process of the guide rollers is carefully controlled; deformation must be prevented from the welded roller shafts of the seamless steel pipes, and coaxiality must be adjusted during processing. During installation, the levelness of the guide rollers must be ensured, and the roller shafts at both ends are locked and positioned to prevent horizontal movement. This ensures that the rubber curtain does not bend or deflect under the downward force of gravity during lifting and lowering.

[0041] As an improved implementation method, refer to Figure 1 , Figures 6-8The rubber curtain 2 is provided with a plurality of reinforcing ribs 22 spaced along its length. These reinforcing ribs 22 extend along the width of the rubber curtain 2, thereby giving the rubber curtain high rigidity in the lateral direction. This results in overall strength, flexibility in the length direction (allowing it to roll up), and bending rigidity in the width direction. For example, the spacing between the reinforcing ribs 22 is 500mm. By using a rubber sheet with a sandwich structure and reinforcing ribs as the curtain material, the strength and wear resistance of the curtain are significantly enhanced, the structural impact resistance is significantly improved, it effectively resists steel shot impact, and greatly extends the service life of the electric door.

[0042] As a preferred embodiment, such as Figure 6 As shown, the distance between the lowest reinforcing rib 22 on the rubber curtain 2 and the bottom of the rubber curtain 2 is greater than or equal to 100mm. By leaving a 100mm gap at the bottom of the rubber curtain without installing a reinforcing rib, the bottom of the rubber curtain can better adhere to the ground through its own flexibility after being lowered, preventing flying sand.

[0043] In some specific implementation methods, such as Figure 7 As shown, the reinforcing rib 22 includes a first pressure plate 221 and a second pressure plate 222 located on both sides of the rubber curtain 2, respectively. The first pressure plate 221 and the second pressure plate 222 are connected by a plurality of fasteners 223. Specifically, as an example, the first pressure plate 221 is a steel plate strip with countersunk holes and a specification of 3900*60*6mm, the second pressure plate 222 is a steel plate strip with screw holes and a specification of 3900*60*6mm, and the fasteners 223 are M6 countersunk screws. The first pressure plate and the second pressure plate are locked together by a threaded connection, thereby clamping and fixing them to the rubber curtain. The fasteners 223 are distributed at 150mm intervals along the width direction of the rubber curtain.

[0044] In some specific implementation methods, such as Figure 8 As shown, the rubber curtain 2 is composed of several rubber sheets 21 glued together, with adjacent rubber sheets 21 connected by an overlap groove 211. Specifically, as an example, four rubber sheets 21 with dimensions of 1200*7000*10mm are glued together and then cut into a rubber curtain 2 with dimensions of 3900*7000*10mm, and the overlap distance between adjacent rubber sheets 21 is 50mm.

[0045] As an improved implementation method, refer to Figure 1 , Figure 9 and Figure 10A curtain guiding device 5 is provided between the upper entrance of the U-shaped guide rail 3 and the curtain roller 1. Specifically, the curtain guiding device 5 includes an arc-shaped roller fixing seat 51 and several rollers 52 rotatably mounted on the roller fixing seat 51. The rollers 52 are arc-shaped on the roller fixing seat 51. In this way, by adding the curtain guiding device, the rubber curtain can slide along the rollers into the U-shaped guide rail during descent and smoothly exit the U-shaped guide rail during ascent. Specifically, as an example, there are eight rollers 52. The roller fixing seat 51 includes an upper fixing plate 511, a lower fixing plate 512, and two parallel arc-shaped side plates 513. The upper fixing plate 511 is fixedly connected to the upper part of the two arc-shaped side plates 513, and the lower fixing plate 512 is fixedly connected to the lower part of the two arc-shaped side plates 513. A roller shaft 514 for rotating and mounting rollers 52 is fixed between the two arc-shaped side plates 513. The curtain guide device 5 is fixedly connected to the upper part of the U-shaped guide rail 3 via a lower fixing plate 512. The arrangement of the arc-shaped side plates 513 and rollers 52 is designed according to the arc curve change during the rolling and unrolling process of the rubber curtain, thereby ensuring smooth lifting and lowering of the rubber curtain. During processing and assembly, it is necessary to ensure that each roller is flexible, well lubricated, and correctly and firmly installed in the correct position so that the rubber curtain can be flexibly and smoothly guided or unloaded from the U-shaped guide rail.

[0046] In some implementations, reference Figures 1-3 The upper part of the door frame 10 is provided with a fixing frame 6, which is equipped with a base 61 for mounting the drive device 8 and a support frame 62 for supporting the curtain roller 1. The curtain roller 1 has roller shaft portions 11 at both ends, which are connected to the support frame 62 via bearing seats 7. By optimizing the transmission system and installing the drive device away from the ground, pollution from steel shot and dust is avoided, significantly reducing the failure rate and improving the operational stability and reliability of the drive device. As an example, the curtain roller 1 is made of seamless steel pipe with a diameter of φ219×5mm, and the upper wide edge of the rubber curtain is pressed and fixed to the curtain roller with countersunk screws using a 40×6mm steel plate pressure strip. The manufacturing process of the curtain roller is controlled; deformation must be prevented when welding the roller shaft portion of the seamless steel pipe, and coaxiality must be adjusted during processing. When installing the steel plate pressure strip, ensure that the length of the rubber door curtain is perpendicular to the axis of the door curtain roller, and that the steel plate pressure strip is parallel to the axis of the door curtain roller, so as to ensure that the rubber door curtain can be rolled up and down flexibly and smoothly.

[0047] In some specific implementation methods, refer to Figure 1 , Figure 2 and Figure 11The driving device 8 includes a drive motor M1, a reducer 82, and a coupling 81. The output end of the drive motor M1 is connected to the input end of the reducer 82, and the output end of the reducer 82 is connected to one end of the coupling 81. The other end of the coupling 81 is connected to the roller shaft 11 on the curtain roller 1. The coupling 81 is responsible for reliably connecting the reducer 82 and the curtain roller 1 to achieve the transmission requirements. Power is provided by the drive motor M1, which drives the curtain roller 1 to rotate through the reducer 82, thereby realizing the rolling up and unrolling of the rubber curtain 2. Specifically, as an example, the drive motor M1 is a YEJ100L1-4 electromagnetic brake three-phase asynchronous motor, the reducer 82 is a BWED42 pinwheel cycloidal reducer, and the coupling 81 is a flexible pin coupling. During installation and commissioning, ensure the reducer is coaxial with the curtain roller drum to guarantee smooth rotation; adjust the electromagnetic brake force to ensure effective and reliable lifting and lowering braking, achieving safe and reliable lifting and lowering of the rubber curtain with a lifting time of 40 seconds and reliable braking. By using high-quality electric devices and accessories in conjunction with the laminated rubber curtain structure, the durability of the electric rubber roller shutter door is significantly improved, enabling it to better adapt to harsh environments with high humidity and dust.

[0048] In some specific implementation methods, refer to Figure 1 , Figure 2 , Figure 6 and Figure 11The control device 9 includes an upper limit switch SQ1, a lower limit switch SQ2, and an electrical control box 91. The upper limit switch SQ1 and the lower limit switch SQ2 are respectively installed at both ends of one of the U-shaped guide rails 3. The edge of the rubber curtain 2 is provided with trigger elements 23 for triggering the upper limit switch SQ1 and the lower limit switch SQ2. The rubber curtain automatically stops lifting when it reaches the limit position to prevent the curtain from reversing when rising beyond the limit or from piling up when falling beyond the limit, ensuring safety. The side wall of the electrical control box 91 is provided with an operation panel 92, which has several buttons and indicator lights. The electrical control box 91 contains an electrical control module. The drive device 8, the upper limit switch SQ1, the lower limit switch SQ2, the buttons, and the indicator lights are respectively connected to the electrical control module. By optimizing the electrical control system, the electrical control box is installed on the door frame, facilitating local operation of the lifting control. It also features fast lifting speed and reliable braking, fully meeting the high-frequency opening and closing requirements of modern shot blasting processes. Operators can control the raising and lowering of the door simply by pressing a button, eliminating the need for physical labor, greatly reducing labor intensity, and eliminating safety hazards. Specifically, as an example, the electrical control module includes an access switch QF0, a main power switch QF1, a first fuse FU1, a second fuse FU2, a third fuse FU3, a first AC contactor KM1, a second AC contactor KM2, a first thermal relay FR1, and a second thermal relay FR2. Buttons include a stop button SB0, an up button SB1, and a down button SB2. Indicator lights include an up indicator light HL1, a down indicator light HL2, and a power indicator light HL3. To ensure the safety of the rubber door curtain's raising and lowering, both raising and lowering are done in a momentary motion; the operator must keep the button pressed throughout the entire raising and lowering process.

[0049] In some specific embodiments, for example, the trigger 23 is an L-shaped metal plate, and the upper limit switch SQ1 and lower limit switch SQ2 are microswitches. The lifting and lowering control of the rubber curtain is achieved by the L-shaped metal plate touching the microswitches. Of course, in other embodiments, the upper limit switch SQ1 and lower limit switch SQ2 can be replaced with other types of sensors such as photoelectric switches and Hall switches, as needed.

[0050] refer to Figure 1 and Figure 11 The working principle of the electric rubber roller shutter door of the bus shot blasting is as follows:

[0051] When the up button SB1 is operated, the first AC contactor KM1 is energized, and the drive motor M1 rotates in the forward direction. The door curtain roller 1 drives the rubber door curtain 2 to rise, and under the pressing action of the guide roller 4, the rubber door curtain 2 can be rolled straight on the door curtain roller 1. When the rubber door curtain 2 rises to the upper limit, the trigger 23 on the rubber door curtain 2 triggers the upper limit switch SQ1 to operate, the first AC contactor KM1 is de-energized, the drive motor M1 stops working, and the door opening operation is completed.

[0052] When the descent button SB2 is operated, the second AC contactor KM2 is energized, and the drive motor M1 rotates in the reverse direction. The rubber curtain 2 descends from the curtain roller 1 due to its own gravity. With the pressing action of the guide roller 4 and the guiding action of the curtain guide device 5, the rubber curtain 2 can slide straight into the U-shaped guide rail 3. When the rubber curtain 2 descends to the lower limit, the trigger 23 on the rubber curtain 2 triggers the lower limit switch SQ2 to operate, the second AC contactor KM2 is de-energized, the drive motor M1 stops working, and the door closing operation is completed.

[0053] The electric rubber roller shutter door for shot blasting of passenger vehicles provided by this utility model can solve the problems of electric doors being easily deformed and damaged by steel shot impact, the great safety hazards of manual pushing and pulling, and the dust leakage caused by poor sealing in the shot blasting operation of passenger vehicles. It also has the advantages of enhanced durability, stable operation at high frequency, and environmental compliance.

[0054] The above embodiments are merely illustrative of the concept and technical solution of this utility model, and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A passenger car whole vehicle throwing and blasting electric rubber curtain door, comprising a door curtain winding drum mounted on a door frame, a driving device for driving the door curtain winding drum to rotate, and a control device electrically connected with the driving device, characterized in that, The door frame has U-shaped guide rails distributed vertically on both sides. The door curtain roller is horizontally distributed and rotatably installed above the two U-shaped guide rails. A rubber door curtain is wound around the door curtain roller. The free ends of the rubber door curtain are slidably connected to the two U-shaped guide rails on both sides. A freely rotatable guide roller is provided between the door curtain roller and the upper part of the two U-shaped guide rails. The guide roller is distributed parallel to the door curtain roller, and the side wall of the guide roller abuts against the surface of the rubber door curtain.

2. The passenger car whole vehicle throwing and peening electric rubber roller shutter door according to claim 1, characterized in that, The guide roller has roller shafts at both ends, and the roller shafts are connected to the door frame via bearing seats.

3. The motor coach whole vehicle shot peening electric rubber roller shutter door according to claim 1, characterized in that, The rubber door curtain is provided with a number of reinforcing ribs at intervals along its length, and the length direction of the reinforcing ribs extends along the width direction of the rubber door curtain.

4. The passenger car whole vehicle throwing and peening electric rubber roller shutter door according to claim 3, characterized in that, The distance between the bottommost reinforcing rib of the rubber curtain and the bottom of the rubber curtain is greater than or equal to 100mm.

5. The motorized rubber curtain door for passenger cars according to claim 3, characterized in that, The reinforcing ribs include a first pressure plate and a second pressure plate located on both sides of the rubber curtain, and the first pressure plate and the second pressure plate are connected by a number of fasteners.

6. The electric rubber roller shutter door for passenger vehicles as described in claim 1, characterized in that, The rubber door curtain is made of several rubber sheets spliced ​​together by adhesive, with adjacent rubber sheets connected by an overlap groove.

7. The motor coach whole vehicle shot peening electric rubber roller shutter door according to claim 1, characterized in that, A curtain guiding device is provided between the upper entrance of the U-shaped guide rail and the curtain roller. The curtain guiding device includes an arc-shaped roller fixing seat and several rollers rotatably mounted on the roller fixing seat. The several rollers are arc-shaped distributed on the roller fixing seat.

8. The motor coach whole vehicle shot peening electric rubber roller shutter door according to claim 1, characterized in that, The upper part of the door frame is provided with a fixing frame, which is provided with a base for installing a drive device and a support frame for supporting the door curtain roller; the two ends of the door curtain roller have roller shafts, which are connected to the support frame through bearing seats.

9. The motorized rubber curtain door for passenger cars according to claim 8, characterized in that, The driving device includes a drive motor, a reducer, and a coupling. The output end of the drive motor is connected to the input end of the reducer, the output end of the reducer is connected to one end of the coupling, and the other end of the coupling is connected to the roller shaft of the door curtain roller.

10. The motor coach whole vehicle shot-blasting electric rubber curtain door according to any one of claims 1-9, characterized in that, The control device includes an upper limit switch, a lower limit switch, and an electrical control box. The upper limit switch and the lower limit switch are respectively installed at both ends of one of the U-shaped guide rails. The edge of the rubber curtain is provided with triggers for triggering the upper limit switch and the lower limit switch. The side wall of the electrical control box is provided with an operation panel, which has several buttons and indicator lights. The electrical control box is equipped with an electrical control module. The drive device, the upper limit switch, the lower limit switch, the buttons, and the indicator lights are respectively connected to the electrical control module.

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