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CN-224231262-U - Detection device for sand spreading valve of railway vehicle

CN224231262UCN 224231262 UCN224231262 UCN 224231262UCN-224231262-U

Abstract

The utility model discloses a detection device for a railway vehicle sanding valve, which comprises a sanding valve body, a sand box mounting frame, a sand guiding pipe, a measuring cup and a weighing table, wherein the sand box is mounted on the sand box mounting frame, the sanding valve body is detachably mounted on the sand box through bolts, an air inlet seat of the sanding valve body is connected with an air inlet pipe, an electromagnetic valve is arranged on the air inlet pipe, the air pressure and the air time of the sanding valve body are controlled through the electromagnetic valve, one end of the sand guiding pipe is connected with a sand outlet nozzle of the sanding valve body, the other end of the sand guiding pipe extends into the measuring cup and is used for guiding sand sprayed out from the sanding valve body into the measuring cup, and the measuring cup is arranged on the weighing table and used for measuring the sanding amount through weighing. According to the utility model, the electromagnetic valve is linked with the weighing platform, so that quantitative control and measurement of sand scattering parameters are realized, the detection precision is improved, meanwhile, the sand box angle is adjustable, the scenes such as ramp operation and the like can be simulated, and meanwhile, the valve body is convenient to disassemble and assemble and sand filling, and the whole structure is simple and convenient to operate.

Inventors

  • LI MINMING
  • GAO LIZHU
  • HE LONG
  • XIE DAOQI

Assignees

  • 株洲林泰铁路配件有限公司

Dates

Publication Date
20260512
Application Date
20250721

Claims (7)

  1. 1. A detection device for a railway vehicle sanding valve comprises a sanding valve body (1) and is characterized by further comprising a sand box (2), a sand box mounting frame (3), a sand guiding pipe (4), a measuring cup (5) and a weighing table (6), wherein the sand box (2) is mounted on the sand box mounting frame (3), the sanding valve body (1) is detachably mounted on the sand box (2) through bolts, an air inlet pipe (7) is connected to an air inlet seat of the sanding valve body (1), an electromagnetic valve (8) is arranged on the air inlet pipe (7), air pressure and ventilation time of the sand flowing into the sanding valve body (1) are controlled through the electromagnetic valve (8), one end of the sand guiding pipe (4) is connected with a sand outlet nozzle of the sanding valve body (1), the other end of the sand guiding pipe extends into the measuring cup (5) and is used for guiding sand sprayed from the sanding valve body (1) into the measuring cup (5), and the measuring cup (5) is placed on the weighing table (6) and the sanding amount is measured through weighing.
  2. 2. A detection device for a railway vehicle sanding valve as set forth in claim 1, wherein the sand box mounting frame (3) comprises a base (31) and two supporting uprights (32) vertically fixed on two sides of the base (31), and the sand box (2) is mounted between the two supporting uprights (32).
  3. 3. The detection device for the railway vehicle sanding valve is characterized in that two sides of a sand box (2) are fixedly connected with horizontal support shafts (22) respectively, through holes penetrating through the horizontal support shafts (22) are formed in a radial crossing mode, the top ends of two support stands (32) are fixedly connected with shaft bases (33) matched with the support shafts (22) respectively, locking holes (34) matched with the through holes in the support shafts (22) are formed in the shaft bases (33), and the support shafts (22) on two sides of the sand box (2) are placed in the shaft bases (34) and pass through selected through holes through bolts to be matched with the locking holes (34) to achieve angle fixing.
  4. 4. A detection device for a railway vehicle sanding valve as set forth in claim 3, wherein the axle seat (33) is provided with an upward opening U-shaped clamping groove, the U-shaped clamping groove is matched with the supporting axle (22), and the locking hole (34) is formed in the side wall of the U-shaped clamping groove.
  5. 5. A detection device for a railway vehicle sanding valve as claimed in claim 1, characterized in that a valve plate which can be opened and closed is arranged at the sand outlet (23) of the sand box (2).
  6. 6. A detection device for a railway vehicle sanding valve as claimed in claim 1, characterized in that the top of the flask (2) is provided with a cover (21) with which the sand injection port has been fitted.
  7. 7. A detection device for a railway vehicle sanding valve as claimed in claim 1, characterized in that the bottom of the flask mounting frame (3) is fitted with a plurality of roller assemblies (35).

Description

Detection device for sand spreading valve of railway vehicle Technical Field The utility model relates to the technical field of railway vehicle equipment, in particular to a device for detecting sand spraying performance of a sand spraying valve of a railway vehicle. Background In the running process of a railway vehicle, the adhesion performance between wheel rails is a key factor influencing the braking, traction and running safety of the vehicle, and the railway vehicle generally adopts a sanding device to spray sand on the contact surface of the wheel rails so as to increase the friction force between the wheel rails and improve the adhesion performance. As a core component of the sanding device, the sanding valve has the advantage of directly relating to the sanding effect and the running safety of the vehicle. Therefore, strict test and detection of the sanding valve is an important link for ensuring the quality reliability and the performance stability of the sanding valve. Currently, a real vehicle test or a simple bench test method is mainly adopted for a sanding test of a railway vehicle sanding valve. However, the real vehicle test has problems of high cost, long period, low safety, and the like, and it is difficult to simulate various complicated working conditions in a laboratory environment. The simple bench test method cannot accurately simulate the sanding process in actual operation, so that the test result is greatly different from the actual condition, and the performance of the sanding valve cannot be effectively evaluated. Disclosure of utility model The utility model aims to overcome the functional limitations and the operation inconvenience of a sanding valve detection device in the prior art and provides the sanding valve detection device which is compact in structure, accurate in control and convenient to operate. The technical scheme includes that the detection device for the railway vehicle sanding valve comprises a sanding valve body, a sand box mounting frame, a sand guiding pipe, a measuring cup and a weighing table, wherein the sand box is mounted on the sand box mounting frame, the sanding valve body is detachably mounted on the sand box through bolts, an air inlet seat of the sanding valve body is connected with an air inlet pipe, an electromagnetic valve is arranged on the air inlet pipe, air pressure and ventilation time of the sanding valve body are controlled through the electromagnetic valve, one end of the sand guiding pipe is connected with a sand outlet nozzle of the sanding valve body, the other end of the sand guiding pipe extends into the measuring cup and is used for guiding sand sprayed out of the sanding valve body into the measuring cup, and the measuring cup is arranged on the weighing table and used for measuring sanding amount through weighing. Further, the sand box mounting frame comprises a base and two supporting vertical frames vertically fixed on two sides of the base, and the sand box is mounted between the two supporting vertical frames. Further, the two sides of the sand box are respectively and fixedly connected with a horizontal supporting shaft, through holes penetrating through the supporting shafts are formed in the supporting shafts in a radial crossing mode, the top ends of the two supporting vertical frames are respectively and fixedly connected with shaft bases matched with the supporting shafts, locking holes matched with the through holes on the supporting shafts are formed in the shaft bases, the supporting shafts on the two sides of the sand box are arranged in the shaft bases, and the supporting shafts penetrate through the selected through holes through bolts to be matched with the locking holes so as to achieve angle fixing. Further, the shaft seat is provided with a U-shaped clamping groove with an upward opening, the U-shaped clamping groove is matched with the supporting shaft, and the locking hole is formed in the side wall of the U-shaped clamping groove. Further, a valve plate capable of being opened and closed is arranged at the sand outlet of the sand box. Further, the top of the sand box is provided with a cover body with which the sand injection port is matched. Further, a plurality of roller assemblies are installed at the bottom of the sand box installation frame. The utility model has the advantages that the accurate regulation and control of the air inlet pressure and the air inlet time are realized through the electromagnetic valve, the linkage measurement of the measuring cup and the weighing table is combined, the sand spraying amount and uniformity under different air pressure conditions can be quantitatively recorded, the error of traditional manual timing estimation is avoided, the detection accuracy is improved, the sand box can be quickly regulated to different inclination angles through the bolt type angle regulating structure of the supporting shaft and the shaft seat, on one hand, the sand spraying requireme