Sand box cover with long service life

Abstract

The utility model relates to a sand box cover with long service life, which comprises a cover body, a stainless steel cover plate and a locking component, the locking component comprises a bolt arranged on the cover body, a nut arranged in the cover body and connected with the bolt, a locking piece rotationally arranged on the bolt, and a pressure spring arranged between the locking piece and the bolt, a locking part matched with the stainless steel cover plate is arranged on one side of the locking piece, a protruding block matched with the locking part is arranged on one side of the stainless steel cover plate, the locking part abuts against the protruding block, and limiting matching of the locking piece and the stainless steel cover plate is formed. The utility model has the advantages of simple structure, stable and reliable performance, high safety and long service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sand box cover, concretely relates to a sand box cover with long service life. BACKGROUND

[0002] The main function of the sand box of the motor train unit is to store quartz sand and uniformly spread the quartz sand on the rail surface in the running direction of the wheel through the sand spreading system when needed to increase the friction between the wheel and the rail, prevent the wheel from idling or skidding in the case of rain and snow or climbing, and ensure the stable running and safe braking of the train. The sand box covers used in the locomotives such as Shaoshan series electric locomotives and harmonious electric locomotives are all made of plastic material. In the long-term use process, the sand box covers are easily damaged and have short service life due to the weathering effect of wind and sunlight. In addition, there is no locking device between the sand box cover and the sand box, and the sand box cover is easily dropped in the use environment of strong vibration of the locomotive. SUMMARY

[0003] The utility model aims at overcoming the defects of the prior art and providing a sand box cover with simple structure, stable and reliable performance, high safety and long service life.

[0004] To achieve the above-mentioned purpose, the utility model adopts a sand box cover with long service life, which comprises a cover body arranged on a box body, a stainless steel cover plate rotatably arranged on the cover body, a locking assembly arranged on the cover body and used for locking the stainless steel cover plate, the locking assembly comprises a bolt arranged on the cover body, a nut arranged in the cover body and connected with the bolt, a locking piece rotatably arranged on the bolt, and a compression spring arranged between the locking piece and the bolt, one side of the locking piece is provided with a locking part matched with the stainless steel cover plate, one side of the stainless steel cover plate is provided with a protruding block matched with the locking part, the locking part abuts on the protruding block, and the locking part and the stainless steel cover plate form limiting cooperation.

[0005] The sand box cover adopts the stainless steel cover plate integrally formed by stainless steel, and will not be damaged in long-term use, so the service life is long. The locking assembly can lock the stainless steel cover plate on the cover body, and the stainless steel cover plate will not fall off due to vibration in the use environment of strong vibration of the locomotive. Therefore, the sand box cover has the advantages of simple structure, stable and reliable performance, high safety and long service life.

[0006] In particular, the locking piece has a positioning boss matched with the cover body, the cover body is provided with a positioning groove matched with the positioning boss, the positioning boss is rotatably arranged in the positioning groove, and the positioning boss and the cover body form rotary connection cooperation. The positioning boss of the locking piece is rotatably arranged in the positioning groove of the cover body, so that the reliable rotation of the locking piece on the cover body can be ensured, thereby improving the working reliability of the sand box cover.

[0007] Specifically, a positioning hole is provided on the other side of the stainless steel cover plate, and a positioning pin is provided on the cover body. The positioning pin is inserted into the positioning hole, forming a rotatable connection between the stainless steel cover plate and the pin shaft. The stainless steel cover plate is rotatably mounted on the positioning pin of the cover body, thereby facilitating the assembly of the stainless steel cover plate and the cover body, making assembly more convenient.

[0008] Specifically, a sealing groove is provided on the inner wall of the cover, and a sealing ring is installed in the sealing groove to seal with the box body. The sealing ring can play a sealing role, thereby improving the sealing performance of the sand box cover and providing better protection.

[0009] Specifically, the locking component is provided with a positioning step that cooperates with the compression spring. The compression spring is fitted onto the bolt, with one end of the spring abutting against the positioning step and the other end abutting against the head of the bolt. The two ends of the spring abut against the head of the bolt and the positioning step of the locking component, respectively, thus facilitating the assembly of the spring with the bolt and the locking component, resulting in higher assembly efficiency. Attached Figure Description

[0010] Fig. 1 This is a perspective view of an embodiment of the present utility model.

[0011] Fig. 2 This is a cross-sectional view of an embodiment of the present utility model.

[0012] Fig. 3 This is an exploded view of an embodiment of the present utility model. Detailed Implementation

[0013] like Figs. 1-3 As shown, this utility model embodiment is a sandbox cover with a long service life, including a cover body 10 disposed on the box body, a stainless steel cover plate 11 rotatably disposed on the cover body 10, and a locking assembly 20 disposed on the cover body 10 for locking the stainless steel cover plate 11. The locking assembly 20 includes a bolt 21 disposed on the cover body 10, a nut 22 disposed inside the cover body 10 and connected to the bolt 21, a locking member 23 rotatably disposed on the bolt 21, and a compression spring 24 disposed between the locking member 23 and the bolt 21. The locking member 23 has a locking part 231 on one side that cooperates with the stainless steel cover plate 11, and the stainless steel cover plate 11 has a protrusion 111 on one side that cooperates with the locking part 231. The locking part 231 abuts against the protrusion 111 and constitutes a limiting cooperation between the locking member 23 and the stainless steel cover plate 11.

[0014] like Fig. 2 and 3As shown, the locking member 23 has a positioning boss 232 matched with the cover 10, the cover 10 is provided with a positioning groove 101 matched with the positioning boss 232, the positioning boss 232 is rotationally arranged in the positioning groove 101, and the positioning boss 232 and the cover 10 are rotationally connected. The positioning boss of the locking member is rotationally arranged in the positioning groove of the cover, so that the locking member can be reliably rotated on the cover, thereby improving the working reliability of the sand box cover. The other side of the stainless steel cover plate 11 is provided with a positioning hole 112, the cover 10 is provided with a positioning pin 12, the positioning pin 12 is inserted into the positioning hole 112, and the stainless steel cover plate 11 and the positioning pin 12 are rotationally connected. The stainless steel cover plate is rotationally arranged on the positioning pin of the cover, so that the stainless steel cover plate and the cover are assembled conveniently and more efficiently. The inner wall of the cover 10 is provided with a sealing groove 102, and the sealing groove 102 is provided with a sealing ring 13 matched with the box body. The sealing ring can seal, thereby improving the sealing performance of the sand box cover and the protection performance.

[0015] The sand box cover adopts a stainless steel cover plate integrally formed by stainless steel, which will not be damaged during long-term use and has a long service life. The locking assembly can lock the stainless steel cover plate on the cover, and the stainless steel cover plate will not fall off due to vibration in the strong vibration environment of the locomotive. Therefore, the sand box cover has the advantages of simple structure, stable and reliable performance, high safety, and long service life.

Claims

1. A sandbox cover with a long service life, characterized in that: The device includes a cover mounted on a housing, a rotatable stainless steel cover plate mounted on the cover, and a locking assembly mounted on the cover for locking the stainless steel cover plate. The locking assembly includes a bolt mounted on the cover, a nut mounted inside the cover and connected to the bolt, a locking element mounted rotatably on the bolt, and a compression spring between the locking element and the bolt. One side of the locking element has a locking part that mates with the stainless steel cover plate, and one side of the stainless steel cover plate has a protrusion that mates with the locking part. The locking part abuts against the protrusion, thus constituting a limiting fit between the locking element and the stainless steel cover plate.

2. The sand box cover with long service life according to claim 1, characterized in that: The locking component has a positioning boss that mates with the cover body. The cover body is provided with a positioning groove that mates with the positioning boss. The positioning boss is rotatably disposed in the positioning groove, and the positioning boss and the cover body are rotatably connected and engaged.

3. The long-service-life sandbox cover according to claim 1 or 2, characterized in that: The stainless steel cover plate has a positioning hole on the other side, and the cover body has a positioning pin. The positioning pin is inserted into the positioning hole and forms a rotational connection between the stainless steel cover plate and the pin shaft.

4. The long-service-life sand box cover according to claim 1 or 2, characterized in that: The inner wall of the cover is provided with a sealing groove, and a sealing ring that seals with the box is provided in the sealing groove.

5. The long-service-life sand box cover according to claim 1 or 2, characterized in that: The locking component is provided with a positioning step that cooperates with the compression spring. The compression spring is fitted onto the bolt, with one end of the compression spring abutting against the positioning step and the other end of the compression spring abutting against the head of the bolt.

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