A device for blocking rain at an end door and a method for blocking drainage

Abstract

The present invention discloses a device and method for blocking rainwater at an end door, relating to the technical field of rainwater blocking for rail vehicles. The device comprises a crossbeam assembly, a first column, and a second column. The crossbeam assembly, equipped with a curtain-pulling device, is connected to the first column and the second column to form a sealing frame structure for cooperating with the end door. A sealing strip is provided on one side of the sealing frame structure to form a first-level contact seal when the sealing frame is pressed against the end door. A rainscreen is connected to the upper side of the crossbeam assembly, and a sealing capsule is provided on the end surface of the rainscreen. The sealing capsule can contact the vehicle body to form a second-level contact seal. A high-pressure air exhaust duct seat is provided above the rainscreen, and the high-pressure air exhaust duct seat blows out high-pressure gas to form a pneumatic seal. The present invention forms a three-level seal by combining two-stage contact sealing and pneumatic sealing, thereby meeting the sealing requirements of the end door. The blocking device is a modular assembly structure with a high reuse rate.

Description

Technical Field

[0001] The present invention relates to the technical field of rain blocking for rail vehicles, and in particular to a rain blocking device for an end door and a blocking and drainage method. Background Art

[0002] The traditional method of sealing the end door from rain is to use PVC plastic film + paper tape. This method takes a long time to seal, and the reuse rate of plastic film and paper tape is low, the sealing effect is poor, and it is easy to increase production costs.

[0003] For rail vehicles, there are some other sealing and waterproofing methods in the prior art. For example, CN114802329A discloses a diversion-type sealing and waterproofing structure, in which a first transverse diversion structure is provided, and second diversion structures are provided downward at both ends of the first diversion structure. When the sealant of the mounting structure between the hood and the vehicle body fails, the water can be diverted to both sides of the vehicle through the U-shaped water diversion groove and then drained downward through the water diversion groove to the bottom of the vehicle; and a second sealing structure is provided at the junction of the second diversion structure and the side of the hood.

[0004] CN218877233U discloses a waterproof structure for rail vehicles and rail vehicles, including a rubber seal, an interior end wall, an interior partition wall, a water gap and a drainage hole. The rubber seal is fixed on the pedal at the end of the car in a door shape, and the two rubber seals on two adjacent cars are fitted and connected. The interior partition wall is provided with an inner end door; a drainage channel for discharging rainwater is formed through the platform area, the water gap and the drainage hole.

[0005] Although the above scheme involves a variety of sealing forms, it still cannot meet the requirements of reuse; and the sealing form is usually a combination of a sealing strip and a drainage structure, which cannot well improve the sealing effect of special parts such as end doors. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a rain-blocking device for an end door and a sealing and drainage method. The three-level seal is formed by two-stage contact sealing and pneumatic sealing, which can meet the sealing requirements of the end door; and the sealing device is a modular assembly structure with a high reuse rate.

[0007] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0008] In a first aspect, the present invention provides a rain blocking device for an end door, comprising a crossbeam assembly, a first column, and a second column. The crossbeam assembly, on which a curtain pulling device is mounted, is connected to the first column and the second column to form a sealed frame structure for cooperating with the end door;

[0009] A sealing strip is provided on one side of the sealing frame structure to form a first-level contact seal when the sealing frame is pressed against the end door; a rain shield plate is connected to the upper side of the crossbeam assembly, and a sealing capsule is provided on the end face of the rain shield plate, which can contact the vehicle body to form a second-level contact seal; a high-pressure air exhaust duct seat is provided above the rain shield plate, and the high-pressure air exhaust duct seat blows out high-pressure gas to form an air pressure seal.

[0010] As a further implementation method, the first column, the second column, and the curtain-pulling device are all snap-connected with the crossbeam.

[0011] As a further implementation method, the crossbeam composition includes a crossbeam base, and the high-pressure air exhaust duct seat protrudes from the surface of the crossbeam base.

[0012] As a further implementation method, the rain shield plate is rotatably connected to the crossbeam base, and a clamping connection mechanism is connected between the rain shield plate and the high-pressure air exhaust duct seat. The clamping connection mechanism adjusts the installation angle of the rain shield plate to change the tightness between the sealing capsule and the vehicle body.

[0013] As a further implementation method, the high-pressure air exhaust duct hole seat is provided with a plurality of high-pressure air outlets on the side facing the end door, and at least one end of the high-pressure air exhaust duct hole seat is connected to a high-pressure air inlet.

[0014] As a further implementation method, the beam base is located on one side of the high-pressure air exhaust duct seat and has a forward drainage channel for connecting to the external environment, and the other side is provided with a rearward drainage channel connecting the first column and the second column.

[0015] As a further implementation, the forward drainage channel includes a first transverse drainage groove provided on the surface of the beam base, one end of the first transverse drainage groove is connected to the first vertical drainage hole, and the other end is connected to the second vertical drainage hole;

[0016] The crossbeam base is further provided with a plurality of forward drainage holes connected with the first vertical drainage hole and the second vertical drainage hole.

[0017] As a further implementation, the rearward drainage channel includes a second transverse drainage groove provided on the surface of the beam base, one end of the second transverse drainage groove is connected to the third vertical drainage hole, and the other end is connected to the fourth vertical water hole.

[0018] As a further implementation, the first column and the second column are respectively provided with a through-type guide channel connected to the rear drainage channel.

[0019] As a further implementation, the first column and the second column respectively have a supporting body, and the supporting body is provided with a water-blocking sealing strip on one side facing the end door, and is connected to a rain shield on the other side.

[0020] As a further implementation method, the curtain-pulling device includes a rain shield, and a rain shield roller curtain is installed inside the rain shield; the rain shield and the crossbeam form a snap-fit ​​fit.

[0021] As a further implementation, the first column, the second column and the crossbeam are all provided with mounting openings for mounting flange clamps.

[0022] In a second aspect, the present invention further provides a method for blocking and draining rainwater at an end door, using the blocking device, comprising:

[0023] The sealing frame structure is pressed against the end door by a sealing strip and fixed to the end door by a flange clamp;

[0024] Adjust the pressing mechanism to make the sealing capsule on the end face of the rain screen fit tightly with the vehicle body;

[0025] High-pressure air is connected to both ends of the high-pressure air exhaust duct seat, and high-pressure gas is generated above the high-pressure air exhaust duct seat and blown toward the connection between the rain shield plate and the vehicle body;

[0026] Rapid drainage to the outside is achieved through the forward drainage channel and the rear drainage channel.

[0027] The beneficial effects of the present invention are as follows:

[0028] (1) The present invention provides a sealing strip on the back side of the sealing frame structure, pressing the sealing frame structure against the end door to achieve a first-level contact seal between the tooling and the vehicle body; a rain shield plate is provided above the sealing frame structure, and the rain shield plate is in close contact with the vehicle body through a sealing capsule to form a second-level contact seal; and a high-pressure air exhaust duct hole seat is provided, and the high-pressure air exhaust duct hole seat blows out high-pressure gas to form an air pressure seal; a three-level seal is formed by two-level contact seal and air pressure seal, which can meet the sealing requirements of the end door; and the sealing device is a modular assembly structure with a high reuse rate.

[0029] (2) The present invention is provided with a forward drainage channel and a rearward drainage channel. The forward drainage channel is composed of a first transverse drainage groove, a vertical drainage hole and a forward drainage hole on the crossbeam base, and can be connected to the external environment; the rearward drainage channel includes a second transverse drainage groove and a vertical drainage hole provided on the crossbeam base, and is connected to the through-type guide channel in the first column and the second column through the vertical drainage hole, thereby realizing rapid drainage of rainwater in the transverse drainage channel to the outside.

[0030] (3) The crossbeam base and the curtain-pulling device of the present invention cooperate with the installation groove through a sliding key, and the first column and the second column cooperate with the installation groove at the bottom of the crossbeam base through corresponding connecting keys, so that the crossbeam component is assembled with the first column, the second column and the curtain-pulling device to form a modular structure, which is easy to disassemble and re-use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0032] Figure 1 is a schematic diagram of a tooling structure according to one or more embodiments of the present invention;

[0033] Figure 2 The present invention is a beam-composed three-dimensional structure according to one or more embodiments. Figure 1 ;

[0034] Figure 3 The present invention is a beam-composed three-dimensional structure according to one or more embodiments. Figure 2 ;

[0035] Figure 4 is a top view of a beam base according to one or more embodiments of the present invention;

[0036] Figure 5 is a perspective view of a beam base according to one or more embodiments of the present invention;

[0037] Figure 6 The second column stereoscopic structure of the present invention according to one or more embodiments Figure 1 ;

[0038] Figure 7 The second column stereoscopic structure of the present invention according to one or more embodiments Figure 2 ;

[0039] Figure 8 The first column stereoscopic structure of the present invention according to one or more embodiments Figure 1 ;

[0040] Figure 9 The first column stereoscopic structure of the present invention according to one or more embodiments Figure 2 ;

[0041] Figure 10 The present invention is a three-dimensional curtain device according to one or more embodiments Figure 1 ;

[0042] Figure 11 The present invention is a three-dimensional curtain device according to one or more embodiments Figure 2 ;

[0043] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0044] Among them, 1. beam composition, 2. curtain pulling device, 3. first column, 4. second column;

[0045] 101. Beam base, 102. Rain shield plate, 103. Compression connection mechanism, 104. Sealing strip, 105. Sealing capsule, 106. First mounting seat, 107. Second mounting seat, 108. Third mounting seat, 109. Fourth mounting seat, 110. High-pressure air exhaust duct seat, 111. High-pressure air outlet, 112. High-pressure air inlet, 113. First transverse drainage channel, 114. Second transverse drainage channel, 115. First forward drainage hole, 116. Second forward drainage hole, 117. Third forward drainage hole, 118. First vertical drainage hole, 119. Second vertical drainage hole, 120. Third vertical drainage hole, 121. Fourth vertical drainage hole, 122. First mounting port, 123. First mounting groove, 124. Second mounting groove, 125. Third mounting groove;

[0046] 201. Rain shield, 202. Rain roller curtain, 203. Slide key; 301. First supporting body, 302. First connecting key, 303. First rain shield, 304. Water-blocking sealing strip, 305. Second mounting port; 401. Second supporting body, 402. Second connecting key, 403. Second rain shield, 404. Water-blocking sealing strip, 405. Third mounting port. DETAILED DESCRIPTION

[0047] Example 1:

[0048] In a typical embodiment of the present invention, Figure 1 As shown, a rain blocking device for an end door is provided.

[0049] Due to the traditional PVC plastic film + paper tape pasting method, there are problems such as low reuse rate of plastic film and paper tape, and poor sealing effect. At the same time, although the combination of sealing strips and drainage structures can improve the sealing effect to a certain extent, it is still not suitable for parts such as end doors that require higher sealing effects.

[0050] Based on this, this embodiment provides a rain blocking device for an end door, including a beam assembly 1, a curtain pulling device 2, a first column 3 and a second column 4. One end of the beam assembly 1 is connected to the first column 3, and the other end is connected to the second column 4, and the curtain pulling device 2 is installed on one side of the beam assembly 1; the beam assembly 1 and the curtain pulling device 2, the first column 3, and the second column 4 form a modular assembly structure, which is reusable and can conveniently and efficiently achieve the blocking of rain at the end door.

[0051] The above-mentioned end door rain blocking device will be described in detail below with reference to the accompanying drawings.

[0052] For ease of description, in this embodiment, the side of the blocking device in contact with the vehicle body is regarded as the rear side, and the other side is regarded as the front side; Figure 1 As shown, the curtain-pulling device 2 is arranged in front of the crossbeam assembly 1, with the first upright post 3 located on the right side of the crossbeam assembly 1 and the second upright post 4 located on the left side of the crossbeam assembly 1. The crossbeam assembly 1, the first upright post 3, and the second upright post 4 form a door-shaped frame structure. The first upright post 3 and the second upright post 4 are snap-fitted to the crossbeam assembly 1 for easy assembly and disassembly.

[0053] The crossbeam component 1, the first column 3 and the second column 4 are all provided with mounting openings for flange clamps, and the frame structure is fixed to the end door through the flange clamps.

[0054] like Figure 2 and Figure 3 As shown, the crossbeam assembly 1 includes a crossbeam base 101, a rain shield grating 102 and a pressing connection mechanism 103. A sealing strip 104 is provided on the rear side of the crossbeam base 101, and the sealing strip is used to press the frame structure and the end door to achieve a first-level contact seal between the tooling and the vehicle body; the rain shield grating 102 is installed on the upper side of the crossbeam base 101, and a pressing connection mechanism 103 is connected between the rain shield grating 102 and the crossbeam base 101. At the same time, a sealing capsule 105 is provided on the contact side of the rain shield grating 102 and the vehicle body. The rain shield grating 102 realizes the contact between the sealing capsule 105 and the vehicle body through the pressing adjustment mechanism, thereby achieving a second-level contact seal to prevent rainwater from invading from above the tooling.

[0055] In addition, a high-pressure air exhaust duct seat 110 is provided on the upper side of the crossbeam base 101. High-pressure air from the high-pressure air exhaust duct seat 110 is continuously blown toward the top of the tooling, achieving a third-level pneumatic seal, further reducing the intrusion of rainwater from above the tooling. This embodiment, by providing three layers of sealing, can effectively enhance the sealing effect.

[0056] To ensure high-pressure gas is blown toward the top of the tooling, while also ensuring sealing and drainage, the high-pressure air exhaust duct seat 110 of this embodiment must be installed at a higher position than other locations. Therefore, the top surface of the crossbeam base 101 has a raised portion, which serves as the high-pressure air exhaust duct seat 110. The rear end surface of the high-pressure air exhaust duct seat 110 is evenly distributed with multiple high-pressure air outlets 111 spaced laterally. High-pressure air inlets 112 are provided at both ends of the high-pressure air exhaust duct seat 110. The high-pressure air exhaust duct seat 110 generates a high-pressure air curtain above the rain screen 102, further preventing rainwater from entering the rain screen 102.

[0057] The two sides of the high pressure air exhaust duct seat 110 form a step structure, with the front side of the high pressure air exhaust duct seat 110 as the first step. Figure 2As shown, the rear side of the air duct hole seat at one end of the rain shield plate 102 is a second step, and the top surface of the first step is higher than the top surface of the second step to meet the drainage requirements; the top surface of the second step is used to install the rain shield plate 102.

[0058] The first mounting seat 106 is connected to one end of the second step, and the other end is connected to the other end of the second step through the second mounting seat 107. The rain grille 102 is rotatably connected to the first mounting seat 106 and the second mounting seat 107. This rotation can be achieved through a pin and a through hole, that is, the rain grille 102 is connected to the pin, and the first mounting seat 106 and the second mounting seat 107 are provided with a through hole that cooperates with the pin. Of course, it can also be achieved through a rotating shaft and a bearing, or other forms.

[0059] The rain screen plate 102 of this embodiment is a rectangular plate to increase the water retaining area.

[0060] One end of the clamping connection mechanism 103 is connected to the rear side wall of the high-pressure air exhaust duct seat 110 through the third mounting seat 108, and the other end is connected to the middle part of the rain shield plate 102 through the fourth mounting seat 109. Similarly, the clamping connection mechanism 103 forms a rotational connection with the third mounting seat 108 and the fourth mounting seat 109; this rotational connection method can be achieved through a hinge support.

[0061] The rain screen plate 102 is installed obliquely on the rear side of the raised portion by cooperating with the pressing connection mechanism 103 and each mounting seat. The pressing connection mechanism 103 is used to change the inclination angle of the rain screen plate 102, thereby adjusting the fit between the sealing capsule 105 and the vehicle body.

[0062] In this embodiment, the compression connection mechanism 103 adopts a threaded screw-in structure, that is, a threaded connection telescopic rod; it can be understood that in other embodiments, the compression connection mechanism 103 can also adopt a pneumatic telescopic rod or other forms, as long as it can meet the adjustment requirements.

[0063] The beam base 101 is also provided with a forward drainage hole, a transverse drainage groove, and a vertical drainage hole, and a plurality of the forward drainage holes, the transverse drainage groove, and the vertical drainage hole are provided. Among them, the transverse drainage groove includes a first transverse drainage groove 113 provided on the top surface of the first step, and a second transverse drainage groove 114 provided on the top surface of the second step. Figure 3 and Figure 4 As shown, one end of the first transverse drainage channel 113 is connected to the first vertical drainage hole 118, and the other end is connected to the second vertical drainage hole 119; one end of the second transverse drainage channel 114 is provided with a third vertical drainage hole 120, and the other end is provided with a fourth vertical drainage hole 121.

[0064] like Figure 3 and Figure 5As shown, the front surface of the first step is provided with a plurality of forward drainage holes, which are arranged at a predetermined interval along the horizontal direction. In this embodiment, there are three forward drainage holes, namely, a first forward drainage hole 115, a second forward drainage hole 116, and a third forward drainage hole 117. The interior of the first step is a cavity, and the first forward drainage hole 115, the second forward drainage hole 116, and the third forward drainage hole 117 are connected to the first horizontal drainage channel 113 through the first vertical drainage hole 118 and the second vertical drainage hole 119 at both ends.

[0065] The first transverse drainage channel 113 and the first vertical drainage hole 118 , the second vertical drainage hole 119 and the forward drainage hole form a forward drainage channel; the second transverse drainage channel 114 and the third vertical drainage hole 120 and the fourth vertical drainage hole 121 form a backward drainage channel.

[0066] like Figure 5 As shown, the bottom surface of the beam base 101 is provided with a plurality of first mounting openings 122 for mounting flange clamps; in this embodiment, three first mounting openings 122 are provided; of course, in other embodiments, the number of first mounting openings 122 may also be two, four or other numbers.

[0067] At the same time, a first mounting groove 123 is provided at one end of the bottom of the beam base 101, and a second mounting groove 124 is provided at the other end. The beam base 101 is snap-fitted with the first column 3 and the second column 4 through the first mounting groove 123 and the second mounting groove 124. A third mounting groove 125 is also provided on the front end of the beam base 101. The third mounting groove 125 is arranged along the transverse direction of the beam base 101 and passes through the beam base 101 in the transverse direction. The curtain device 2 is snap-fitted through the third mounting groove 125.

[0068] In this embodiment, in order to ensure stable cooperation between the modules, the cross-section of the above-mentioned mounting grooves is set to T-shaped, that is, a T-shaped mounting groove; the T-shaped mounting groove extends a certain length from the front side to the rear side of the beam base 101, and forms a notch on the front end surface of the beam base 101.

[0069] Of course, in other embodiments, a sliding key 203 and a connecting key may be provided on the beam base 101 , and corresponding mounting grooves may be provided on the curtain device 2 , the first column 3 , and the second column 4 to meet the snap-in requirements.

[0070] like Figure 10 and Figure 11As shown, the curtain pulling device 2 includes a rain shield 201, a rain shield roller curtain 202 and a slide key 203. The rain shield 201 cooperates with the third installation groove 125 through the slide key 203 to realize the installation of the rain shield 201 and the beam base 101; the rain shield roller curtain 202 is installed in the rain shield 201, and the rain shield effect is achieved by lowering the rain shield roller curtain 202; after the rain shield roller curtain 202 is lowered, it can close the area enclosed by the first column 3, the second column 4 and the beam 1.

[0071] In this embodiment, the rain shield 201 is a rectangular parallelepiped structure as a whole, and its bottom surface and the side facing the beam component 1 are open structures, so that after the rain shield 201 is assembled with the beam base 101, the rain shield roller curtain 202 can extend from the lower side outlet of the rain shield 201.

[0072] The sliding key 203 is connected to the open portion of the side of the rain shield 201 as a whole. The cross-sectional shape of the sliding key 203 is the same as that of the third mounting groove 125, that is, a T-shaped structure.

[0073] The first column 3 and the second column 4 have the same structure and are installed symmetrically. Figure 8 and Figure 9 As shown, the first column 3 includes a first supporting body 301, a first connecting key 302 and a first rain shield 303. The first connecting key 302 is connected to the top of the first supporting body 301, and the first connecting key 302 and the first supporting body 301 are an integral structure; the first connecting key 302 cooperates with the first mounting groove 123 to realize the connection between the first column 3 and the beam base 101; the first connecting key 302 enters the first mounting groove 123 from the notch of the beam base 101.

[0074] The front end surface of the first supporting body 301 is connected to the first rain shield 303 . Similarly, the first rain shield 303 and the first supporting body 301 are an integrated structure. The first rain shield 303 is an L-shaped structure to provide rain protection.

[0075] A through-type drainage channel is provided between the upper and lower end surfaces of the first support column, communicating with the third vertical drainage hole 120 of the crossbeam base 101. A water-retaining sealing strip 304 is provided on the back of the first support column for sealing against the vehicle body. A second mounting opening 305 for mounting a flange clamp is provided on the vertical surface of the first support column near the center of the end door.

[0076] like Figure 6 and Figure 7As shown, the second column 4 includes a second supporting body 401, a second connecting key 402 and a second rain shield 403. The through-type guide channel in the second supporting body 401 is connected to the fourth vertical drainage hole 121 of the beam base 101; the second supporting body 401 is also provided with a water-retaining sealing strip 404 and a third mounting port 405; the specific structure of the second column 4 is the same as that of the first column 3 and will not be described in detail here.

[0077] After the crossbeam base 101 is assembled with the first column 3 and the second column 4, the second transverse drainage channel 114 on the crossbeam base 101 is connected to the through-type guide channel of the first column 3 and the second column 4 through the third vertical drainage hole 120 and the fourth vertical drainage hole 121 at both ends, and the combination forms a connected drainage channel; the first transverse drainage channel 113 on the crossbeam base 101 is connected to the external environment through the vertical drainage holes and the forward drainage holes to form a forward drainage channel.

[0078] It should be noted that the material of the sealing strip 104 of this embodiment is the same as that of the water-retaining sealing strip, and they are distinguished for the convenience of description.

[0079] In this embodiment, a sealing strip 104 is provided on the back side of the sealing frame structure to press the sealing frame structure and the end door to achieve the first-level contact sealing between the tooling and the vehicle body; at the same time, a rain shield plate 102 is provided above the crossbeam base 101, and the rain shield plate 102 achieves the contact between the end sealing capsule 105 and the vehicle body through the pressing and adjusting mechanism, that is, the second-level contact sealing, which can prevent rainwater from invading from above the tooling; and there is high-pressure gas blowing towards the top of the tooling above the rain shield plate 102, which realizes the third-level pneumatic sealing, further reducing the intrusion of rainwater from above the tooling.

[0080] This embodiment can conveniently and efficiently block the end door from rain through the above-mentioned three-level sealing, effectively improving the blocking efficiency and reducing production costs.

[0081] Example 2:

[0082] The present embodiment provides a method for sealing and draining rainwater at an end door. Based on the sealing device of the first embodiment, the crossbeam component 1, the first column 3, the second column 4 and the curtain device 2 are first fixed together by a connector to form a sealed frame structure, and a sealing strip is provided on the contact surface between the sealed frame structure and the vehicle body; then the sealed frame structure is fixed and pressed to the end door by a flange clamp to ensure sealing with the vehicle body.

[0083] In order to further ensure the rainproof sealing effect, the rainproof grille 102 is tightened and adjusted by a compression mechanism to achieve a close fit between the end sealing capsule 105 and the vehicle body, so as to further prevent water droplets from invading from above the tooling; in addition, high-pressure air is connected to both ends of the high-pressure air exhaust duct seat 110, and high-pressure gas is generated above the high-pressure air exhaust duct seat 110, which is blown toward the connection between the rainproof grille 102 and the vehicle body, further preventing rainwater from invading from above the tooling and achieving sealing; the rainwater in the horizontal drainage trough will be quickly drained to the outside through the interconnected vertical drainage holes and the forward drainage channel.

[0084] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A rain blocking device for an end door, characterized in that: It includes a crossbeam component, a first column, and a second column. The crossbeam component with a curtain pulling device is connected to the first column and the second column to form a sealed frame structure for matching the end door; A sealing strip is provided on one side of the sealing frame structure to form a first-level contact seal when the sealing frame structure is pressed against the end door; a rain shield plate is connected to the upper side of the crossbeam assembly, and a sealing capsule is provided on the end face of the rain shield plate, which can contact the vehicle body to form a second-level contact seal; a high-pressure air exhaust duct seat is provided above the rain shield plate, and the high-pressure air exhaust duct seat blows out high-pressure gas to form a pneumatic seal; The rain shield grid is installed on the upper side of the beam base. A compression adjustment mechanism is connected between the rain shield grid and the beam base. The compression adjustment mechanism adjusts the installation angle of the rain shield grid to change the tightness between the sealing capsule and the vehicle body.

2. The rain blocking device for an end door according to claim 1, characterized in that: The first upright column, the second upright column and the curtain-pulling device are all connected to the crossbeam in a snap-fit ​​manner.

3. The rain blocking device for an end door according to claim 1, characterized in that: The crossbeam comprises a crossbeam base, and a high-pressure air exhaust duct seat protrudes from the surface of the crossbeam base.

4. The rain blocking device for an end door according to claim 3, characterized in that: The rain shield plate is rotatably connected to the beam base.

5. The end door rain blocking device according to claim 1 or 3, characterized in that: The high-pressure air exhaust duct hole seat is provided with a plurality of high-pressure air outlets on a side facing the end door, and at least one end of the high-pressure air exhaust duct hole seat is connected to a high-pressure air inlet.

6. The rain blocking device for an end door according to claim 4, characterized in that: The beam base is provided with a forward drainage channel for communicating with the external environment on one side of the high-pressure air exhaust duct seat, and a backward drainage channel communicating with the first column and the second column on the other side.

7. The rain blocking device for an end door according to claim 6, characterized in that: The forward drainage channel includes a first transverse drainage channel provided on the surface of the beam base, one end of the first transverse drainage channel is connected to the first vertical drainage hole, and the other end is connected to the second vertical drainage hole; The crossbeam base is further provided with a plurality of forward drainage holes connected with the first vertical drainage hole and the second vertical drainage hole.

8. The rain blocking device for an end door according to claim 7, characterized in that: The rearward drainage channel includes a second transverse drainage groove provided on the surface of the beam base, one end of the second transverse drainage groove is connected to the third vertical drainage hole, and the other end is connected to the fourth vertical water hole.

9. The end door rain blocking device according to claim 6 or 8, characterized in that: A through-type guide channel communicating with the rear drainage channel is respectively provided inside the first column and the second column.

10. The end door rain blocking device according to claim 1 or 2, characterized in that: The first column and the second column respectively have a supporting body, and the supporting body is provided with a water-blocking sealing strip on one side facing the end door, and is connected to a rain shield on the other side.

11. The rain blocking device for an end door according to claim 1, characterized in that: The curtain-pulling device comprises a rain shield, and a rain shield rolling curtain is installed inside the rain shield; the rain shield and the crossbeam form a snap-fitting fit.

12. The end door rain blocking device according to claim 1 or 2, characterized in that: The first column, the second column and the crossbeam are all provided with mounting openings for mounting flange clamps.

13. A method for blocking and draining rainwater at an end door, characterized in that: The blocking device according to claim 6 comprises: The sealing frame structure is pressed against the end door by a sealing strip and fixed to the end door by a flange clamp; Adjust the pressing mechanism to make the sealing capsule on the end face of the rain screen fit tightly with the vehicle body; High-pressure air is connected to both ends of the high-pressure air exhaust duct seat, and high-pressure gas is generated above the high-pressure air exhaust duct seat and blown toward the connection between the rain shield plate and the vehicle body; Rapid drainage to the outside is achieved through the forward drainage channel and the rear drainage channel.

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