Railway vehicle sand box cover and sanding system

Abstract

The present application relates to the technical field of rail vehicle sanding system, and particularly relates to a rail vehicle sand box cover and sanding system, the rail vehicle sand box cover comprises a base, an end cover, a sealing element and a pressing assembly, the base is provided with an opening opposite to a sand inlet; the end cover is arranged at the opening; the sealing element is embedded on the side of the end cover facing the opening, and the sealing element is arranged corresponding to the opening; the pressing assembly is rotatably connected with the base, and the pressing assembly can press the end cover so that the sealing element is tightly arranged with the edge of the opening. The end cover is pressed by the pressing assembly, so that the sealing element is tightly arranged with the edge of the opening of the base, the sand inlet can be effectively sealed, the requirement of air pressure during sanding can be met, the function of waterproofing can be achieved, the structure is simple, the installation is convenient, and the problem of poor sealing performance of the existing rail vehicle sand box cover is effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail vehicle sanding system, and particularly relates to a rail vehicle sand box cover and sanding system. BACKGROUND

[0002] The sanding system is an important part of the braking system and is widely used in rail vehicles. In harsh conditions, the working environment of the wheel-rail contact surface is improved through the sanding device, which can effectively prevent the relative sliding between the wheel and the rail and improve the running safety.

[0003] The sand box cover is an important part of the sanding system and is a key component for ensuring the safe operation of the vehicle. It is installed at the sand inlet of the sand box. The traditional sand box cover is installed on the sand box of the bogie or the roof of the vehicle, and the sanding device used is a gravity type sanding device. The sand box cover is screwed on the sand box opening through threads, or is buckled on the sand box opening through a hook, which has the risk of falling off and poses a safety hazard. The current sand box cover is directly installed on the sand box of the bogie or the roof of the vehicle, or is installed on the side wall of the vehicle body and then connected to the sand box through a pipeline. The sanding system uses gravity type sanding devices, which require the sand box cover to be waterproof to protect the sand in the sand box from moisture, and also require the sand box cover to be not sealed to maintain the same pressure difference between the inside and outside of the sand box. The sanding system also uses pressure difference type sanding devices, which require high-pressure air to spray sand, and thus require the sand box cover to be waterproof and sealed to ensure that the sand in the sand box is not moist and the pressure is higher than the pressure outside the sand box.

[0004] Therefore, it is necessary to provide a new rail vehicle sand box cover to solve the above technical problems. SUMMARY

[0005] The main purpose of the present application is to provide a rail vehicle sand box cover, which aims to solve the problem of poor sealing performance of the existing rail vehicle sand box cover.

[0006] To achieve the above purpose, the present application provides a rail vehicle sand box cover arranged at the sand inlet of a sand box, which comprises a base, an end cover, a sealing element and a pressing assembly. An opening is formed in the base and faces the sand inlet. The end cover is arranged at the opening. The sealing element is embedded on one side of the end cover facing the opening, and the sealing element is arranged corresponding to the opening. The pressing assembly is rotationally connected with the base, and the pressing assembly can press the end cover so that the sealing element is tightly arranged with the edge of the opening.

[0007] Or a first through groove is formed in the sealing element and communicates with the opening and the external environment.

[0008] Optionally, the pressing assembly comprises a pressing handle, a hanging buckle structure and a pressing piece, the first end of the pressing handle is rotationally connected with the base, and the second end is buckled with the base through the hanging buckle structure; the first end of the pressing piece is connected with the pressing handle, and the second end extends in a direction perpendicular to the pressing handle and is abuttingly arranged with the end cover.

[0009] Optionally, a butt joint hole is formed at the center of the end cover; the pressing piece comprises a pressing rod and a pressing head, the pressing rod is connected with the pressing handle, and the end of the pressing rod away from the pressing handle can extend into the butt joint hole; the pressing head is sleeved on the pressing rod and is threadedly connected with the pressing rod, the pressing head is abuttingly arranged with the edge of the butt joint hole to press the end cover, and the pressing head can move along the pressing rod to adjust the pressure between the sealing piece and the base.

[0010] Optionally, the hanging buckle structure comprises a hanging ring and a hook, the hanging ring is rotationally connected with the second end of the pressing handle; the hook is arranged on the base, and the hanging ring can be buckled with the hook to connect the pressing handle and the base.

[0011] Optionally, the rail vehicle sand box cover further comprises a mounting support arranged on the base; the pressing assembly further comprises a pin shaft and a torsion spring, the pressing handle is rotationally connected with the mounting support through the pin shaft, and the torsion spring is sleeved on the pin shaft and is abuttingly arranged between the pressing handle and the mounting support.

[0012] Optionally, the pressing assembly further comprises a holding structure arranged on the pressing handle.

[0013] Optionally, the rail vehicle sand box cover further comprises a mounting pad arranged between the base and the sand box.

[0014] Optionally, the sealing piece is a circular ring structure and can seal the opening; or the sealing piece is a circular ring structure, and a first through groove is formed in the sealing piece and communicates the opening and the external environment.

[0015] Optionally, the side of the end cover facing the opening is formed with an annular mounting groove matching the shape of the sealing piece, a plurality of through holes are formed in the side wall of the annular mounting groove and are uniformly distributed, the through holes communicate the annular mounting groove and the external environment; the sealing piece is embedded in the annular mounting groove, and a second through groove is formed in the sealing piece and corresponds to the through holes, and the second through groove can communicate the opening and the through holes.

[0016] In addition, the application further provides a rail vehicle sanding system, which comprises a sand box, a sanding unit and the rail vehicle sand box cover as described above, the sanding unit is arranged on the sand box and communicates with the sand outlet of the sand box, and is used for spraying sand particles onto a track; and the rail vehicle sand box cover is arranged on the sand box and communicates with the sand inlet of the sand box.

[0017] In the technical scheme, the end cover is pressed by the pressing assembly, so that the sealing element is tightly pressed against the opening edge of the base, the sand inlet can be effectively sealed, the requirement for air pressure during sanding is met, the water-proof effect is achieved, the structure is simple, and the installation is convenient, and the poor sealing performance of the existing rail vehicle sand box cover is effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0019] Figure 1 Fig. 1 is a structural schematic view of the rail vehicle sand box cover in the embodiment 1 of the application;

[0020] Figure 2 Fig. 2 is an exploded view of the rail vehicle sand box cover in the embodiment 1 of the application;

[0021] Figure 3 Fig. 3(a) is a front view of the sealing element applied to the pressure type sanding system in the embodiment 1 of the application, Figure 3 Fig. 3(b) is a sectional view of Fig. 3(a); Figure 3 Fig. 3(c) is an A-A sectional view of Fig. 3(a);

[0022] Figure 4 Fig. 4(a) is a front view of the sealing element applied to the gravity type sanding system in the embodiment 1 of the application, Figure 4 Fig. 4(b) is a sectional view of Fig. 4(a); Figure 4 Fig. 4(c) is an A-A sectional view of Fig. 4(a);

[0023] Figure 5 Fig. 5 is an exploded view of the end cover and the sealing element in the embodiment 2 of the application;

[0024] Figure 6 Fig. 6 is another perspective exploded view of the end cover and the sealing element in the embodiment 2 of the application.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1. Sand box; 1.1. Sand inlet; 2. Base; 2.1. Opening; 3. End cap; 3.1. Butt hole; 3.2. Annular mounting groove; 3.3. Through hole; 4. Seal; 4.1. First through groove; 4.2. Second through groove; 5. Clamping assembly; 5.1. Clamping handle; 5.2. Hook structure; 5.2.1. Hanging ring; 5.2.2. Hook; 5.3. Clamping component; 5.3.1. Clamping head; 5.3.2. Clamping rod; 5.4. Pin; 5.5. Torsion spring; 5.6. Grip structure; 6. Mounting support; 7. Mounting pad.

[0027] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0029] This invention proposes a sand box cover for rail vehicles, aiming to solve the problems of poor sealing performance and inability to adapt to different sand spreading systems in existing rail vehicle sand box covers.

[0030] Example 1

[0031] like Figures 1 to 3 As shown, this embodiment provides a sand box cover for rail vehicles, disposed at the sand inlet 1.1 of a sand box 1. The rail vehicle sand box cover includes a base 2, an end cap 3, a sealing element 4, and a pressing assembly 5. The base 2 has an opening 2.1 facing the sand inlet 1.1; the end cap 3 is disposed at the opening 2.1; the sealing element 4 is embedded in the side of the end cap 3 facing the opening 2.1, and the sealing element 4 is correspondingly disposed to the opening 2.1; the pressing assembly 5 is rotatably connected to the base 2, and the pressing assembly 5 can press the end cap 3 so that the sealing element 4 is pressed against the edge of the opening 2.1; or the sealing element 4 has a first through groove 4.1 communicating with the opening 2.1 and the external environment. In practical applications, by pressing the end cap 3 with the pressing assembly 5, the sealing element 4 is pressed against the edge of the opening 2.1 of the base 2, which can effectively seal the sand inlet 1.1 to meet the air pressure requirements during sand spreading and also play a waterproof role. The structure is simple, the installation is convenient, and it effectively solves the problem of poor sealing performance of existing rail vehicle sand box covers.

[0032] Specifically, the pressing assembly 5 comprises a pressing handle 5.1, a hanging buckle structure 5.2 and a pressing piece 5.3, the first end of the pressing handle 5.1 is rotationally connected with the base 2, and the second end is buckled with the base 2 through the hanging buckle structure 5.2; the first end of the pressing piece 5.3 is connected with the pressing handle 5.1, and the second end is arranged in a direction perpendicular to the pressing handle 5.1 and can be abuttingly arranged with the end cover 3. The pressing handle 5.1 can rotate relative to the base 2 to make the pressing piece 5.3 abuttingly arranged with the end cover 3, and be fixed with the base through the hanging buckle structure 5.2, thereby ensuring the sealing effect on the sand inlet 1.1, or making the pressing piece 5.3 away from the end cover, so as to open the end cover 3 for sand feeding. The pressing handle 5.1 is further provided with an anti-collision rubber sleeve to reduce the noise generated when the pressing handle 5.1 collides with the sand box 1.

[0033] Further, the center of the end cover 3 is provided with a butt joint hole 3.1; the pressing piece 5.3 comprises a pressing rod 5.3.2 and a pressing head 5.3.1, the pressing rod 5.3.2 is connected with the pressing handle 5.1, and the end of the pressing rod 5.3.2 away from the pressing handle 5.1 can extend into the butt joint hole 3.1; the pressing head 5.3.1 is sleeved on the pressing rod 5.3.2 and is threadedly connected with the pressing rod 5.3.2, the pressing head 5.3.1 abuts against the edge of the butt joint hole 3.1 to press the end cover 3, and the pressing head 5.3.1 can move along the pressing rod 5.3.2 to adjust the pressure between the sealing piece 4 and the base 2. The pressing head 5.3.1 moves along the pressing rod 5.3.2 to change the distance between the pressing handle 5.1 and the end cover 3 when the pressing assembly 5 is buckled with the base 2, the greater the distance, the greater the pressure, and the stronger the waterproof ability; the smaller the distance, the smaller the pressure, and the worse the waterproof ability, thereby adjusting the pressure between the sealing piece 4 and the base 2, and the butt joint hole 3.1 can facilitate the quick positioning of the pressing piece 5.3 to the center of the end cover 3.

[0034] Further, the hanging buckle structure 5.2 comprises a hanging ring 5.2.1 and a hook 5.2.2, the hanging ring 5.2.1 is rotationally connected with the second end of the pressing handle 5.1; the hook 5.2.2 is arranged on the base 2, and the hanging ring 5.2.1 can be buckled with the hook 5.2.2 to connect the pressing handle 5.1 with the base 2. The hanging ring 5.2.1 and the hook 5.2.2 are matched to realize the fixed connection of the pressing handle 5.1 and the base 2, thereby avoiding the pressing handle 5.1 from being popped open during operation to make the end cover 3 lose the abutting force, and ensuring the effective sealing of the sand inlet 1.1.

[0035] Further, the rail vehicle sand box cover further comprises a mounting support 6 arranged on the base 2; the pressing assembly 5 further comprises a pin shaft 5.4 and a torsion spring 5.5, the pressing handle 5.1 is rotationally connected with the mounting support 6 through the pin shaft 5.4, and the torsion spring 5.5 is sleeved on the pin shaft 5.4 and abuts against between the pressing handle 5.1 and the mounting support 6. When sand needs to be added, the hanging ring 5.2.1 on the release hook 5.2.2 is released, the pressing handle 5.1 is opened, the end cover 3 is opened under the action of the torsion spring 5.5, sand is added to the sand box 1 through the opening 2.1 of the base 2, and the torsion spring 5.5 has the effect of automatically opening the end cover 3, facilitating sand adding; the sand box cover in the gravity type sanding system is generally arranged vertically on the sand box 1, and when the sand box cover is vertically arranged, the torsion spring 5.5 also has the effect of keeping the position of the end cover 3, preventing the end cover 3 from sagging under the action of gravity, and being difficult to align when closed.

[0036] The pressing assembly 5 further comprises a holding structure 5.6 arranged on the pressing handle 5.1. The holding structure 5.6 is convenient for an operator to hold to open the pressing handle 5.1.

[0037] Further, the rail vehicle sand box cover further comprises a mounting pad 7 arranged between the base 2 and the sand box 1. The base 2 is mounted at the sand inlet 1.1 of the sand box 1 through bolts, and the mounting pad 7 is arranged between the base 2 and the sand box 1, which can effectively seal. Preferably, the sealing pad and the mounting pad 7 are integrally formed, which can be made of rubber material, facilitating production and installation.

[0038] As shown in Figure 3 and Figure 4 , the sealing element 4 is a circular ring structure, and the sealing element 4 can seal the opening 2.1; or the sealing element 4 is a circular ring structure, and a first through groove 4.1 is arranged on the sealing element 4 to communicate the opening 2.1 and the external environment. In actual application, the end cover 3 is pressed by the pressing assembly 5, so that the sealing element 4 abuts against the edge of the opening 2.1 of the base 2, which can effectively seal the sand inlet 1.1 to meet the requirement of air pressure of the pressure difference type sanding system when sanding; and the sealing element 4 provided with the first through groove 4.1 is replaced when the gravity type sanding system sands, so as to ensure that the air pressure inside and outside the sand box 1 is consistent, prevent the sanding system from being blocked due to negative pressure in the sand box 1, and play a waterproof role, so as to adapt to different sanding systems.

[0039] Embodiment 2

[0040] The difference from embodiment 1 is that: Figure 5 and Figure 6As shown, one side of the end cover 3 facing the opening 2.1 forms an annular mounting groove 3.2 matching the shape of the sealing member 4, the sidewall of the annular mounting groove 3.2 is provided with one or more evenly distributed through holes 3.3, the through holes 3.3 communicate the annular mounting groove 3.2 and the external environment; the sealing member 4 is embedded in the annular mounting groove 3.2, and the sealing member 4 is provided with a second through groove 4.2 corresponding to the through hole 3.3, the second through groove 4.2 can communicate the opening 2.1 and the through hole 3.3. When the sand box cover is applied to the gravity type sanding system, the second through groove 4.2 of the sealing member 4 is respectively and one-to-one corresponding to the through hole 3.3 on the end cover 3, so as to communicate the opening 2.1 and the external environment, thereby ensuring the consistency of the air pressure inside and outside the sand box 1; when the sand box cover is applied to the differential pressure type sanding system, only the sealing member 4 embedded in the annular mounting groove 3.2 is rotated to make the second through groove 4.2 and the through hole 3.3 on the end cover 3 misaligned, so as to isolate the external environment from the opening 2.1 through the sealing member 4 to meet the air pressure requirement of the differential pressure type sanding system when sanding. The sand box cover in the embodiment can be applied to both the gravity type sanding system and the differential pressure type sanding system, and the switching process is simple and convenient, thereby effectively improving the application range of the sand box cover.

[0041] Embodiment 3

[0042] The embodiment provides a rail vehicle sanding system, which comprises a sand box 1, a sanding unit and a rail vehicle sand box cover as described above, the sanding unit is arranged on the sand box 1 and communicates with the sand outlet of the sand box 1, and is used for spraying sand particles onto the rail; the rail vehicle sand box cover is arranged on the sand box 1 and communicates with the sand inlet 1.1 of the sand box 1.

[0043] Since the rail vehicle sanding system comprises the rail vehicle sand box cover as described above, the rail vehicle sanding system has all the beneficial effects of the rail vehicle sand box cover, which will not be repeated here.

[0044] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A rail vehicle sand box cover arranged at a sand inlet (1.1) of a sand box (1), characterized in that The rail vehicle sand box cover comprises a base (2), an end cover (3), a sealing element (4) and a pressing assembly (5), the base (2) is provided with an opening (2.1) opposite to the sand inlet (1.1); the end cover (3) is arranged at the opening (2.1); the sealing element (4) is embedded on the side of the end cover (3) facing the opening (2.1), and the sealing element (4) is arranged corresponding to the opening (2.1); the pressing assembly (5) is rotatably connected with the base (2), and the pressing assembly (5) can press the end cover (3) so that the sealing element (4) is tightly arranged with the edge of the opening (2.1); The pressing assembly (5) comprises a pressing handle (5.1), a hanging buckle structure (5.2) and a pressing element (5.3), the first end of the pressing handle (5.1) is rotatably connected with the base (2), and the second end is buckled with the base (2) through the hanging buckle structure (5.2); the first end of the pressing element (5.3) is connected with the pressing handle (5.1), and the second end is arranged in a direction perpendicular to the pressing handle (5.1) and can be tightly arranged with the end cover (3); The center of the end cover (3) is provided with a butt joint hole (3.1); the pressing element (5.3) comprises a pressing rod (5.3.2) and a pressing head (5.3.1), the pressing rod (5.3.2) is connected with the pressing handle (5.1), and the end of the pressing rod (5.3.2) away from the pressing handle (5.1) can extend into the butt joint hole (3.1); the pressing head (5.3.1) is sleeved on the pressing rod (5.3.2) and is threadedly connected with the pressing rod (5.3.2), the pressing head (5.3.1) abuts with the edge of the butt joint hole (3.1) to press the end cover (3), and the pressing head (5.3.1) can move along the pressing rod (5.3.2) to adjust the pressure between the sealing element (4) and the base (2); The hanging buckle structure (5.2) comprises a hanging ring (5.2.1) and a hook (5.2.2), the hanging ring (5.2.1) is rotatably connected with the second end of the pressing handle (5.1); the hook (5.2.2) is arranged on the base (2), and the hanging ring (5.2.1) can be buckled with the hook (5.2.2) to connect the pressing handle (5.1) with the base (2); The side of the end cover (3) facing the opening (2.1) forms an annular mounting groove (3.2) matched with the shape of the sealing element (4), the side wall of the annular mounting groove (3.2) is provided with one or more evenly distributed through holes (3.3), the through holes (3.3) communicate the annular mounting groove (3.2) and the external environment; the sealing element (4) is embedded in the annular mounting groove (3.2), and the sealing element (4) is provided with a second through groove (4.2) corresponding to the through hole (3.3), the second through groove (4.2) can communicate the opening (2.1) and the through hole (3.3); The rail vehicle sand box cover further comprises a mounting support (6) arranged on the base (2); the pressing assembly (5) further comprises a pin shaft (5.4) and a torsion spring (5.5), the pressing handle (5.1) is rotationally connected with the mounting support (6) through the pin shaft (5.4), the torsion spring (5.5) is sleeved on the pin shaft (5.4), and the torsion spring (5.5) abuts against between the pressing handle (5.1) and the mounting support (6).

2. The railcar carbox cover of claim 1, wherein, The pressing assembly (5) further comprises a holding structure (5.6) arranged on the pressing handle (5.1).

3. A rail vehicle sand box cover according to any one of claims 1 or 2, characterized in that The rail vehicle sand box cover further comprises a mounting pad (7) arranged between the base (2) and the sand box (1).

4. A rail vehicle sand box cover according to any one of claims 1 or 2, characterized in that The sealing member (4) is in a circular ring structure, and the sealing member (4) can seal the opening (2.1); or the sealing member (4) is in a circular ring structure, and a first through groove (4.1) is arranged on the sealing member (4) and communicates the opening (2.1) with the external environment.

5. A rail vehicle sanding system, characterized in that, The rail vehicle sanding system comprises a sand box (1), a sanding unit and the rail vehicle sand box cover according to any one of claims 1 to 4, the sanding unit is arranged on the sand box (1) and communicates with a sand outlet of the sand box (1), and is used for spraying sand particles onto a rail; and the rail vehicle sand box cover is arranged on the sand box (1) and communicates with a sand inlet (1.1) of the sand box (1).

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