Railway vehicle sand box cover and sanding system

Abstract

The invention relates to the technical field of railway vehicle sanding systems, in particular to a railway vehicle sand box cover and a sanding system.The railway vehicle sand box cover comprises a base, an end cover, a sealing piece and a pressing assembly, and an opening right facing a sand inlet is formed in the base; the end cover is arranged at the opening; the sealing piece is embedded in the side, facing the opening, of the end cover, and the sealing piece and the opening are correspondingly arranged; the pressing assembly is rotationally connected with the base and can press the end cover so that the sealing piece can abut against the edge of the opening. The end cover is pressed through the pressing assembly, so that the sealing piece abuts against the edge of the opening of the base, the sand inlet can be effectively sealed, the requirement for air pressure during sanding can be met, the waterproof effect can be achieved, the structure is simple, installation is convenient, and the problem that an existing railway vehicle sand box cover is poor in sealing performance is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of rail vehicle sand spreading systems, and in particular to a rail vehicle sand box cover and a sand spreading system. Background Art

[0002] The sand spreading system is an important part of the braking system and is widely used in rail vehicles. Under harsh conditions, the sand spreading device can improve the working environment of the wheel-rail contact surface, effectively prevent relative sliding between the wheel and rail, and improve operating safety.

[0003] As an important part of the sand spreading system, the sand box cover is a key part to ensure 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 on the bogie or the roof. The sand spreader used is a gravity sand spreader. The sand box cover is screwed on the sand box mouth by threads or hooked on the sand box mouth. There is a risk of falling off, which poses a safety hazard. The current sand box cover is directly installed on the sand box on the bogie and the roof, and is also installed on the side wall of the car body and connected to the sand box through a pipe. The sand spreading system uses a gravity sand spreader, which requires the sand box cover to be waterproof to protect the sand in the sand box from moisture. At the same time, it is also required that it cannot be sealed to keep the pressure difference between the inside and outside of the sand box consistent; there are also pressure differential sand spreaders, which require high-pressure air to spray sand, which requires 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-mentioned technical problems. Summary of the invention

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

[0006] To achieve the above-mentioned purpose, the present invention provides a rail vehicle sand box cover, which is arranged at the sand inlet of the sand box, and the rail vehicle sand box cover comprises a base, an end cover, a sealing member and a pressing assembly, wherein the base is provided with an opening facing the sand inlet; the end cover is arranged at the opening; the sealing member is embedded on a side of the end cover facing the opening, and the sealing member is arranged corresponding to the opening; the pressing assembly is rotatably connected to the base, and the pressing assembly can press the end cover so that the sealing member is tightly arranged against the edge of the opening;

[0007] Or the sealing member is provided with a first through groove communicating with the opening and the external environment.

[0008] Optionally, the clamping assembly includes a clamping handle, a hook structure and a clamping piece, the first end of the clamping handle is rotatably connected to the base, and the second end is buckled with the base through the hook structure; the first end of the clamping piece is connected to the clamping handle, and the second end is extended in a direction perpendicular to the clamping handle and can be tightly arranged with the end cover.

[0009] Optionally, a docking hole is provided at the center of the end cover; the clamping piece includes a pressure rod and a pressure head, the pressure rod is connected to the clamping handle, and the end of the pressure rod away from the clamping handle can extend into the docking hole; the pressure head is sleeved on the pressure rod and threadedly connected to the pressure rod, the pressure head abuts against the edge of the docking hole to clamp the end cover, and the pressure head can move along the pressure rod to adjust the pressure between the seal and the base.

[0010] Optionally, the hook structure includes a hanging ring and a hook, the hanging ring is rotatably connected to the second end of the clamping handle; the hook is arranged on the base, and the hanging ring can be engaged with the hook to connect the clamping handle and the base.

[0011] Optionally, the rail vehicle sand box cover also includes a mounting support arranged on the base; the clamping assembly also includes a pin and a torsion spring, the clamping handle is rotatably connected to the mounting support via the pin, the torsion spring is sleeved on the pin, and the torsion spring is pressed between the clamping handle and the mounting support.

[0012] Optionally, the clamping assembly further includes a holding structure, and the holding structure is disposed on the clamping handle.

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

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

[0015] Optionally, an annular mounting groove matching the shape of the seal is formed on the side of the end cover facing the opening, and one or more evenly distributed through holes are formed on the side wall of the annular mounting groove, and the through holes connect the annular mounting groove and the external environment; the seal is embedded in the annular mounting groove, and a second through groove corresponding to the through hole is formed on the seal, and the second through groove can connect the opening and the through hole.

[0016] In addition, the present invention also provides a rail vehicle sand spreading system, which includes a sand box, a sand spreading unit and the rail vehicle sand box cover as described above, wherein the sand spreading unit is arranged on the sand box and is connected to the sand outlet of the sand box for spraying sand onto the track; the rail vehicle sand box cover is arranged on the sand box and is connected to the sand inlet of the sand box.

[0017] In the technical solution of the present invention, the end cover is compressed by a compression assembly so that the seal is pressed against the opening edge of the base, and the sand inlet can be effectively sealed to meet the air pressure requirements when spreading sand, and can play a waterproof role. The structure is simple and the installation is convenient, which effectively solves the problem of poor sealing performance of the existing sand box cover of rail vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of a sand box cover for a rail vehicle in Example 1 of the present invention;

[0020] Figure 2 This is an exploded view of a sand box cover of a rail vehicle in Example 1 of the present invention;

[0021] Figure 3 (a) is a front view of the sealing member when applied to a pressure-type sand spreading system in Example 1 of the present invention, Figure 3 (b) in Figure 3 AA cross-sectional view of (a);

[0022] Figure 4 (a) is a front view of the sealing member when applied to a gravity-type sand spreading system in Example 1 of the present invention, Figure 4 (b) in Figure 4 A cross-sectional view of (a);

[0023] Figure 5 An exploded view of the end cover and the sealing member in Example 2 of the present invention;

[0024] Figure 6 This is an exploded view from another perspective of the end cover and the seal in Example 2 of the present invention.

[0025] Description of Figure Numbers:

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

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

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

[0029] The present invention provides a rail vehicle sand box cover, aiming to solve the problem that the existing rail vehicle sand box cover has poor sealing performance and cannot adapt to different sand spreading systems.

[0030] Example 1

[0031] like Figures 1 to 3 As shown, this embodiment provides a rail vehicle sand box cover, which is arranged at the sand inlet 1.1 of the sand box 1. The rail vehicle sand box cover includes a base 2, an end cover 3, a seal 4 and a clamping assembly 5. The base 2 is provided with an opening 2.1 arranged opposite to the sand inlet 1.1; the end cover 3 is arranged at the opening 2.1; the seal 4 is embedded in the side of the end cover 3 facing the opening 2.1, and the seal 4 is arranged corresponding to the opening 2.1; the clamping assembly 5 is rotatably connected to the base 2, and the clamping assembly 5 can clamp the end cover 3 so that the seal 4 is tightly arranged against the edge of the opening 2.1; or the seal 4 is provided with a first through groove 4.1 connecting the opening 2.1 and the external environment. In practical applications, the end cover 3 is clamped by the clamping assembly 5 so that the seal 4 is tightly against the edge of the opening 2.1 of the base 2, and the sand inlet 1.1 can be effectively sealed to meet the air pressure requirements when spreading sand, and can play a waterproof role. The structure is simple and easy to install, which effectively solves the problem of poor sealing performance of the existing rail vehicle sand box cover.

[0032] Specifically, the clamping assembly 5 includes a clamping handle 5.1, a hook structure 5.2 and a clamping member 5.3. The first end of the clamping handle 5.1 is rotatably connected to the base 2, and the second end is buckled with the base 2 through the hook structure 5.2. The first end of the clamping member 5.3 is connected to the clamping handle 5.1, and the second end is extended in a direction perpendicular to the clamping handle 5.1, and can be tightly set with the end cover 3. The clamping handle 5.1 can be rotated relative to the base 2 to make the clamping member 5.3 tightly against the end cover 3, and fixed with the bottom cover through the hook structure 5.2, thereby ensuring the sealing effect on the sand inlet 1.1, or making the clamping member 5.3 away from the end opening, so as to open the end cover 3 for adding sand. The clamping handle 5.1 is also provided with an anti-collision rubber sleeve to reduce the noise generated when the clamping handle 5.1 collides with the sand box 1.

[0033] Furthermore, a docking hole 3.1 is opened at the center of the end cover 3; the clamping piece 5.3 includes a pressure rod 5.3.2 and a pressure head 5.3.1, the pressure rod 5.3.2 is connected to the clamping handle 5.1, and the end of the pressure rod 5.3.2 away from the clamping handle 5.1 can extend into the docking hole 3.1; the pressure head 5.3.1 is sleeved on the pressure rod 5.3.2 and is threadedly connected to the pressure rod 5.3.2, the pressure head 5.3.1 abuts against the edge of the docking hole 3.1 to clamp the end cover 3, and the pressure head 5.3.1 can move along the pressure rod 5.3.2 to adjust the pressure between the seal 4 and the base 2. The pressure head 5.3.1 moves along the pressure 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 larger the distance, the greater the pressure and the stronger the waterproof ability; the smaller the distance, the smaller the pressure and the weaker the waterproof ability, thereby adjusting the pressure between the sealing member 4 and the base 2, and the docking hole 3.1 can facilitate the quick positioning of the pressing member 5.3 to the center of the end cover 3.

[0034] Furthermore, the hook structure 5.2 includes a hook 5.2.1 and a hook 5.2.2, the hook 5.2.1 is rotatably connected to the second end of the pressing handle 5.1; the hook 5.2.2 is arranged on the base 2, and the hook 5.2.1 can be buckled with the hook 5.2.2 to connect the pressing handle 5.1 and the base 2. The pressing handle 5.1 is fixedly connected to the base 2 by the cooperation of the hook 5.2.1 and the hook 5.2.2, so as to prevent the pressing handle 5.1 from bouncing off during operation and causing the end cover 3 to lose its pressing force, thereby ensuring effective sealing of the sand inlet 1.1.

[0035] In addition, the rail vehicle sand box cover also includes a mounting support 6 arranged on the base 2; the clamping assembly 5 also includes a pin 5.4 and a torsion spring 5.5, the clamping handle 5.1 is rotatably connected to the mounting support 6 through the pin 5.4, the torsion spring 5.5 is sleeved on the pin 5.4, and the torsion spring 5.5 is pressed between the clamping handle 5.1 and the mounting support 6. When sand needs to be added, the hanging ring 5.2.1 on the hook 5.2.2 is loosened, the clamping handle 5.1 is opened, the end cover 3 is opened under the force of the torsion spring 5.5, and sand is added to the sand box 1 through the opening 2.1 of the base 2. The torsion spring 5.5 has the function of automatically opening the end cover 3, which is convenient for adding sand; the sand box cover in the gravity sand spreading system is generally vertically arranged on the sand box 1. When the sand box cover is vertically installed, the torsion spring 5.5 also has the function of maintaining the position of the end cover 3 to prevent the end cover 3 from sagging under the action of gravity after being hit, and it is not easy to align when closed.

[0036] The clamping assembly 5 further comprises a gripping structure 5.6, which is arranged on the clamping handle 5.1 and is convenient for operators to grip to open the clamping handle 5.1.

[0037] In addition, the rail vehicle sand box cover also includes a mounting pad 7, which is arranged between the base 2 and the sand box 1. The base 2 is installed at the sand inlet 1.1 of the sand box 1 by bolts, and the mounting pad 7 is arranged between the base 2 and the sand box 1, which can play an effective sealing role. Preferably, the sealing pad and the mounting pad 7 are both integrally formed parts, and can be made of rubber material, which is easy to produce and install.

[0038] like Figure 3 and Figure 4 As shown, the seal 4 is a circular ring structure, and the seal 4 can seal the opening 2.1; or the seal 4 is a circular ring structure, and a first through groove 4.1 connecting the opening 2.1 and the external environment is provided on the seal 4. In practical applications, the end cover 3 is compressed by the compression assembly 5 so that the seal 4 is pressed against the edge of the opening 2.1 of the base 2, and the sand inlet 1.1 can be effectively sealed to meet the air pressure requirements of the pressure differential sand spreading system when sanding; and when the gravity sand spreading system is sanding, it is replaced with the seal 4 with the first through groove 4.1 to ensure that the air pressure inside and outside the sand box 1 is consistent, to prevent the sand spreading system from being blocked due to the negative pressure inside the sand box 1, and to play a waterproof role, so that it can adapt to different sand spreading systems.

[0039] Example 2

[0040] The difference from Example 1 is that: Figure 5 and Figure 6As shown, an annular mounting groove 3.2 matching the shape of the sealing member 4 is formed on the side of the end cover 3 facing the opening 2.1, and one or more evenly distributed through holes 3.3 are formed on the side wall of the annular mounting groove 3.2, and the through holes 3.3 connect the annular mounting groove 3.2 and the external environment; the sealing member 4 is embedded in the annular mounting groove 3.2, and a second through groove 4.2 corresponding to the through hole 3.3 is formed on the sealing member 4, and the second through groove 4.2 can connect the opening 2.1 and the through hole 3.3. When the sand box cover is applied to a gravity sanding system, the second through groove 4.2 of the seal 4 is respectively arranged in one-to-one correspondence with the through hole 3 on the end cover 3 to connect 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 a pressure differential sanding system, it is only necessary to rotate the seal 4 embedded in the annular mounting groove 3.2 so that the second through groove 4.2 and the through hole 3.3 on the end cover 3 are offset, so that the external environment is isolated from the opening 2.1 through the seal 4 to meet the air pressure requirements of the pressure differential sanding system when sanding. The sand box cover in this embodiment can be applied to both the gravity sanding system and the pressure differential sanding system, and the switching process is simple and easy to operate, which effectively improves the scope of application of the sand box cover.

[0041] Example 3

[0042] The present embodiment provides a rail vehicle sand spreading system, which includes a sand box 1, a sand spreading unit and the rail vehicle sand box cover as described above, the sand spreading unit is arranged on the sand box 1 and is connected to the sand outlet of the sand box 1, and is used to spray sand onto the track; the rail vehicle sand box cover is arranged on the sand box 1 and is connected to the sand inlet 1.1 of the sand box 1.

[0043] Since the rail vehicle sand spreading system includes the rail vehicle sand box cover as described above, the rail vehicle sand spreading system has all the beneficial effects of the rail vehicle sand box cover, which will not be described in detail here.

[0044] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

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 member (4) and a pressing assembly (5); the base (2) is provided with an opening (2.1) arranged opposite to the sand inlet (1.1); the end cover (3) is arranged at the opening (2.1); the sealing member (4) is embedded in a side of the end cover (3) facing the opening (2.1), and the sealing member (4) is arranged corresponding 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 cover (3) so that the sealing member (4) is tightly arranged against the edge of the opening (2.1).

2. The rail vehicle flask cover according to claim 1, characterized in that: The clamping assembly (5) comprises a clamping handle (5.1), a hook structure (5.2) and a clamping piece (5.3); the first end of the clamping handle (5.1) is rotatably connected to the base (2), and the second end is buckled with the base (2) via the hook structure (5.2); the first end of the clamping piece (5.3) is connected to the clamping handle (5.1), and the second end is extended in a direction perpendicular to the clamping handle (5.1) and can be tightly arranged with the end cover (3).

3. The rail vehicle flask cover according to claim 2, characterized in that: A docking hole (3.1) is provided at the center of the end cover (3); the pressing member (5.3) comprises a pressing rod (5.3.2) and a pressing head (5.3.1); the pressing rod (5.3.2) is connected to the pressing handle (5.1); the end of the pressing rod (5.3.2) away from the pressing handle (5.1) can extend into the docking hole (3.1); the pressing head (5.3.1) is sleeved on the pressing rod (5.3.2) and is threadedly connected to the pressing rod (5.3.2); the pressing head (5.3.1) abuts against the edge of the docking 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 member (4) and the base (2).

4. The rail vehicle flask cover according to claim 3, characterized in that: The hook 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 to 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) and the base (2).

5. The rail vehicle flask cover according to claim 4, characterized in that: The rail vehicle sand box cover also includes a mounting support (6) arranged on the base (2); the clamping assembly (5) also includes a pin shaft (5.4) and a torsion spring (5.5); the clamping handle (5.1) is rotatably connected to the mounting support (6) via the pin shaft (5.4); the torsion spring (5.5) is sleeved on the pin shaft (5.4), and the torsion spring (5.5) is pressed between the clamping handle (5.1) and the mounting support (6).

6. The rail vehicle flask cover according to any one of claims 2 to 5, characterized in that: The pressing assembly (5) further comprises a holding structure (5.6), wherein the holding structure (5.6) is arranged on the pressing handle (5.1).

7. The rail vehicle flask cover according to any one of claims 1 to 5, characterized in that: The rail vehicle sand box cover also includes a mounting pad (7), and the mounting pad (7) is arranged between the base (2) and the sand box (1).

8. The rail vehicle flask cover according to any one of claims 1 to 5, characterized in that: The sealing member (4) is a circular ring structure, and the sealing member (4) is capable of sealing the opening (2.1); or the sealing member (4) is a circular ring structure, and the sealing member (4) is provided with a first through groove (4.1) connecting the opening (2.1) and the external environment.

9. The rail vehicle flask cover according to any one of claims 1 to 5, characterized in that: An annular mounting groove (3.2) matching the shape of the sealing member (4) is formed on a side of the end cover (3) facing the opening (2.1); one or more evenly distributed through holes (3.3) are formed on the side wall of the annular mounting groove (3.2); the through holes (3.3) connect the annular mounting groove (3.2) and the external environment; the sealing member (4) is embedded in the annular mounting groove (3.2); and a second through groove (4.2) corresponding to the through hole (3.3) is formed on the sealing member (4); the second through groove (4.2) can connect the opening (2.1) and the through hole (3.3).

10. A rail vehicle sand spreading system, characterized in that: The rail vehicle sand spreading system comprises a sand box (1), a sand spreading unit and a rail vehicle sand box cover as described in any one of claims 1 to 8, wherein the sand spreading unit is arranged on the sand box (1) and is connected to a sand outlet of the sand box (1) for spraying sand onto a track; the rail vehicle sand box cover is arranged on the sand box (1) and is connected to a sand inlet (1.1) of the sand box (1).

Images