CN-224220992-U - Auxiliary filter screen frame of electric bus

Abstract

The utility model discloses an electric bus auxiliary filter screen frame which comprises a fixed frame (1), a detachable frame (2) and a middle filter screen (3), wherein the middle filter screen (3) is arranged between the fixed frame (1) and the detachable frame (2), an indexing pin (4) is welded on the fixed frame (1), an indexing pin head (5) for fixing/detaching the detachable frame (2) is arranged on the indexing pin (4), and at least one indexing pin stop (7) matched with the indexing pin (4) on the fixed frame (1) is arranged at a corresponding position of the detachable frame (2).

Inventors

• JIA JIE
• SHAO QI
• WANG XIAOXU
• Zhong Chongxu
• XU ZONGTAO
• SHI RENSHENG
• Teng Jieyu
• XU ZHITAO
• LIU SHUKUN
• ZHOU QUAN
• XU PENG

Assignees

• 青岛地铁运营有限公司

Dates

Publication Date

20260512

Application Date

20250527

Claims (5)

1. 1. The auxiliary filter screen frame of the electric bus is characterized by comprising a fixed frame (1), a detachable frame (2) and a middle filter screen (3), wherein the middle filter screen (3) is arranged between the fixed frame (1) and the detachable frame (2), an indexing pin (4) is welded on the fixed frame (1), an indexing pin head (5) for fixing/detaching the detachable frame (2) is arranged on the indexing pin (4), and at least one indexing pin stop (7) matched with the indexing pin (4) on the fixed frame (1) is arranged at the corresponding position of the detachable frame (2).
2. 2. The auxiliary filter screen frame for the electric bus is characterized in that a groove (6) is formed in the center line position of a panel of the fixed frame (1).
3. 3. The electric bus auxiliary screen frame as set forth in claim 1, wherein the indexing pin head (5) is vertically centered and free of skew.
4. 4. An electric bus auxiliary screen frame as in claim 1, wherein the indexing pin stops (7) are fixed at both ends with rivets.
5. 5. The electric bus auxiliary screen frame according to claim 1, wherein the body of the index pin (4) is fixed on the fixed frame (1) by welding.

Description

Auxiliary filter screen frame of electric bus Technical Field The utility model relates to the technical field of electric bus auxiliary power box filter screens, in particular to an electric bus auxiliary filter screen frame. Background The auxiliary filter screen of the west coast express bus is arranged above the auxiliary power supply box, so that the faults of bad contact of an electric circuit, influence on the safe operation of a train and the like caused by the fact that external dust and impurities enter the auxiliary unit and the charger unit during the operation of the bus are prevented. The filter screen needs to be cleaned and replaced regularly, so that the heat dissipation of the auxiliary element is prevented from being influenced by excessive dust and impurity accumulation. The fixed clamp plate design of auxiliary filter screen is fixed by 6M 6 bolts at present, and the bolt welding is on the frame. In the daily cleaning maintenance and replacement process, the nut on the M6 bolt needs to be frequently disassembled, so that larger abrasion is caused to the thread, and the thread engagement degree is reduced. When the bolt has the faults of sliding wire, breakage and the like, the whole auxiliary filter screen frame is required to be sent to a manufacturer for maintenance due to the irremovable property of the bolt. In addition, certain vibration can be generated in the running process of the train, and the fixing nuts on the bolts are easy to loosen. According to statistics, the fatigue fracture condition of the M6 fixing bolt occurs for a plurality of times in the early stage, and the operation and maintenance cost is increased to a certain extent due to the problems. The defects and deficiencies have the following points: ① The bolts are easy to wear, the failure rate is high, the auxiliary filter screen frame of the electric bus needs to be disassembled regularly, the filter screen is cleaned and replaced, and the auxiliary filter screen frame needs to be disassembled and maintained once in each train month on average. According to the fault statistics, the auxiliary filter screen frame fails about 30 times in a year due to bolt wear. ② The maintenance efficiency is low, the current auxiliary filter screen frame structure is provided with 6 bolts, the fastening force of each bolt is 3.7Nm, and the maintenance time is more. ③ The replacement cost is high, the installation bolts on the auxiliary filter screen frame are easy to generate the phenomena of thread abrasion and sliding wire failure under the working condition of frequent assembly and disassembly, and the bolts and the frame are of an integral structure, so that the whole filter screen is required to be sent back to a manufacturer for maintenance, replacement spare parts are required to be put on the vehicle, and the material consumption and the labor cost are high. Disclosure of utility model The utility model provides an electric bus auxiliary filter screen frame, which aims to solve the problems of easy abrasion, high failure rate, low maintenance efficiency, high replacement cost and the like of the traditional bolts. The technical scheme adopted by the utility model for realizing the purposes is that the device comprises a fixed frame, a detachable frame and a middle filter screen, wherein the middle filter screen is arranged between the fixed frame and the detachable frame, an indexing pin is welded on the fixed frame, the indexing pin is provided with an indexing pin head for fixing/detaching the detachable frame, and the detachable frame is provided with at least one indexing pin stop matched with the indexing pin on the fixed frame at a corresponding position, so that the effect of clamping the middle filter screen is achieved. Preferably, a groove is arranged at the center line position of the panel of the fixed frame, so that the detachable frame can be conveniently opened and the middle filter screen can be conveniently taken out. Preferably, the indexing pin head is vertically centered and no skew occurs. Preferably, the index pin stop is fixed at both ends with rivets. Preferably, the body of the index pin is fixed on the fixed frame by welding The utility model has the beneficial effects that the utility model takes the independent research design as the main part, and on the premise of meeting the integral basic function requirement of the filter screen frame, the filter cotton frame and the pressing plate structure are optimized and improved, and the indexing pin structure is used for locking and fixing instead of the bolt structure. ① The invention of the structure is completed, and the whole optimization of the auxiliary power box filter screen of the electric bus of the type in the industry is completed, thus belonging to the initiative of the industry; ② The structure is reliable, the durability is high, the auxiliary filter screen frame structure is optimized and verified in the second quarter of 2019 by th