Locomotive roof maintenance method

Abstract

A locomotive top cover overhauling method comprises the following steps that (1) connecting bolts of a top cover and a locomotive body are disassembled; (2) hoisting and unloading the top cover; (3) mounting a top cover supporting tool; (4) disassembling the top cover part under the vehicle; (5) hoisting the top cover back to the vehicle body; (6) sanding the vehicle body; (7) hoisting and unloading the top cover; (8) overhauling a top cover; (9) hoisting the top cover back to the vehicle body; (10) painting a top cover; (11) hoisting and unloading the top cover; (12) mounting the top cover component under the vehicle; (13) disassembling the top cover supporting tool; and (14) top cover hoisting. A top cover supporting tool is designed, the tool has the function of fixing a top cover and connecting the top cover with the vehicle body, and the top cover and the vehicle body are guaranteed to synchronously run, and the requirements during sanding and painting are met; the process method of synchronously sanding and painting the top cover and the locomotive body is designed, so that the maintenance efficiency of the locomotive is improved, and the maintenance site requirement is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of locomotive maintenance, in particular to a locomotive roof maintenance method. Background Art

[0002] The car body is one of the main mechanical components of an electric locomotive. It is a welded, integral load-bearing structure consisting of an underframe, side structures, driver's cab, and rear end wall. Four removable roof covers are located on top. The roof covers are bolted to the car body, and the car body and roof covers must be separated during locomotive maintenance.

[0003] Current maintenance methods for locomotive roof: (1) Disassembly of the bolts connecting the top cover and the car body: When the locomotive is disassembled at the first level, the bolts connecting the top cover and the car body are removed; (2) Lifting the top cover off the vehicle and disassembling the top cover components under the vehicle: When the locomotive is transferred to the second-level disassembly of the locomotive, the top cover is directly lifted off the vehicle and placed on the top cover equipment disassembly platform, and then the top cover equipment disassembly process is completed under the vehicle at the top cover disassembly platform; (3) Top cover buffer: When the locomotive wire tube is dismantled and the car body is sanded, the top cover is buffered in the buffer position; (4) Overhaul of the top cover and hoisting of the top cover back to the vehicle body: When the vehicle body is overhauled, the top cover is overhauled on the overhaul platform, mainly for deformation, attachments and undisassembled accessories. After the overhaul is completed, it is hoisted back to the vehicle body and buckled on top of the vehicle body; (5) Top cover painting: The top cover is painted in the paint warehouse along with the vehicle. The top cover is painted by roller coating, and the bottom cover is painted along with the vehicle interior by spraying. (6) Lifting the top cover off the vehicle, installing the top cover components under the vehicle, and hoisting the top cover: After the locomotive is painted, it is transferred to the locomotive for assembly. The top cover is lifted off the vehicle and placed on the top cover buffer station; the top cover is lifted to the component assembly station, and after the top cover under-vehicle component assembly process is completed, the top cover is hoisted.

[0004] The existing roof cover maintenance plan has defects: when the car body and the roof cover are sandblasted and painted, the car body and the roof cover are in a connected state, and the connecting part of the car body and the roof cover is in a tightly attached state. Sandblasting and painting cannot repair the connecting part, causing the car body and the roof cover to continue to rust; during the use of the locomotive, the roof cover and the car body have abnormal phenomena such as rust and paint peeling. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a locomotive roof maintenance method to solve the technical problems existing in the prior art.

[0006] To solve the above technical problems, the technical solution of the present invention is: a locomotive roof maintenance method, comprising the following steps: (1) Disassembly of the bolts connecting the top cover and the car body: When the locomotive is disassembled at the first level, the bolts connecting the top cover and the car body are removed; (2) Lifting the top cover off the vehicle: When the locomotive is transferred to the second-level dismantling of the locomotive, the top cover is directly lifted off the vehicle and placed on the top cover equipment disassembly platform; (3) Top cover support fixture installation: Install the top cover support fixture on both sides of the top of the vehicle body; (4) Disassembly of top cover components under the vehicle: When the locomotive wire tube is disassembled, the top cover is disassembled at the top cover disassembly station to complete the disassembly process of the top cover equipment under the vehicle; (5) Lift the top cover back to the vehicle body: Lift the top cover back to the vehicle body and buckle it on top of the vehicle body; (6) Sandblasting of vehicle body; (7) The top cover is hoisted off the vehicle; (8) Top cover inspection: When the vehicle body is inspected, the top cover is inspected at the inspection station, and deformation, attachments and undisassembled accessories are inspected; (9) Hoist the top cover back to the vehicle body: After the top cover inspection is completed, hoist the top cover back to the vehicle body and buckle it above the vehicle body; (10) Top cover painting: The top cover is painted in the paint warehouse along with the vehicle. The top cover is painted by roller coating, and the bottom cover is painted along with the vehicle interior by spraying. (11) Lifting and unloading of the top cover: After the locomotive is painted, it is transported to the locomotive assembly plant and the top cover is lifted and unloaded and placed on the top cover buffer station; (12) Installation of top cover components under the vehicle: the top cover is hoisted to the component assembly platform; (13) Disassembly of the top cover support tooling; (14) Top cover hoisting: After completing the assembly process of the top cover undercarriage parts, the top cover is hoisted.

[0007] As an improvement, the top cover supporting tooling includes a column, a screw seat provided at the lower end of the column, a pad provided at the upper end of the column and a skirt provided on the outer wall of the column.

[0008] As an improvement, the screw seat of the top cover support tooling is threadedly connected to the vehicle body, the pad of the top cover support tooling contacts the bottom surface of the top cover, and the skirt of the top cover support tooling contacts the reinforcing beam at the bottom of the top cover, and the top cover is limited by the top cover support tooling on both sides.

[0009] The beneficial effects brought by the present invention compared with the prior art are: A top cover sandblasting process is added, and the top cover is sandblasted together with the car body. The top cover and the top of the driver's cab top cover are sandblasted. When the top cover is buckled back into the car body, a top cover supporting tooling is added. When sandblasting, the rusted parts of the lower edge of the top cover can be sandblasted. When the car body is painted, the lower edge of the top cover and the top of the car body side wall are sprayed with paint; a top cover supporting tooling is designed, and the tooling has the function of fixing the connection between the top cover and the car body to ensure the synchronous operation, sandblasting and painting of the top cover and the car body; a process method for synchronous sandblasting and painting of the top cover and the car body is designed to improve the maintenance efficiency of the locomotive and reduce the need for maintenance space. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a diagram of the top cover support tooling in use.

[0011] Figure 2 It is a tooling used between the top of the vehicle side wall and the roof.

[0012] Figure 3 It is a tooling used between the top and cover of the driver's cab. DETAILED DESCRIPTION

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] A locomotive roof maintenance method is mainly used for HXD1 series locomotives, including HXD1 electric locomotives, HXD1B electric locomotives, HXD1C electric locomotives, and HXD1D electric locomotives, a total of five models. The maintenance method specifically includes the following steps: (1) Disassembly of the bolts connecting the top cover and the car body: When the locomotive is disassembled at the first level, the bolts connecting the top cover and the car body are removed; (2) Lifting the top cover off the vehicle: When the locomotive is transferred to the second-level dismantling of the locomotive, the top cover is directly lifted off the vehicle and placed on the top cover equipment disassembly platform; (3) Top cover support fixture installation: Install the top cover support fixture on both sides of the top of the vehicle body; (4) Disassembly of top cover components under the vehicle: When the locomotive wire tube is disassembled, the top cover is disassembled at the top cover disassembly station to complete the disassembly process of the top cover equipment under the vehicle; (5) Lift the top cover back to the vehicle body: Lift the top cover back to the vehicle body and buckle it on top of the vehicle body; (6) Sandblasting of vehicle body; (7) The top cover is hoisted off the vehicle; (8) Top cover inspection: When the vehicle body is inspected, the top cover is inspected at the inspection station, and deformation, attachments and undisassembled accessories are inspected; (9) Hoist the top cover back to the vehicle body: After the top cover inspection is completed, hoist the top cover back to the vehicle body and buckle it above the vehicle body; (10) Top cover painting: The top cover is painted in the paint warehouse along with the vehicle. The top cover is painted by roller coating, and the bottom cover is painted along with the vehicle interior by spraying. (11) Lifting and unloading of the top cover: After the locomotive is painted, it is transported to the locomotive assembly plant and the top cover is lifted and unloaded and placed on the top cover buffer station; (12) Installation of top cover components under the vehicle: the top cover is hoisted to the component assembly platform; (13) Disassembly of the top cover support tooling; (14) Top cover hoisting: After completing the assembly process of the top cover undercarriage parts, the top cover is hoisted.

[0015] like Figures 1 to 3 As shown, the roof support fixtures are divided into two types: one for use between the top of the vehicle body side wall and the roof, and the other for use between the top of the driver's cab and the roof. The roof support fixture 3 includes a column 31, a screw seat 32 provided at the lower end of the column 31, a pad 33 provided at the upper end of the column 31, and a skirt 34 provided on the outer wall of the column 31. The screw seat 32 of the roof support fixture is threadedly connected to the vehicle body 1, the pad 33 of the roof support fixture contacts the bottom surface of the roof 2, and the skirt 34 of the roof support fixture contacts the reinforcement beam 21 at the bottom of the roof. The roof is limited by the roof support fixtures on both sides, and the stability of the roof is maintained by the weight of the roof itself and the friction between the fixture and the reinforcement beam.

Claims

1. A locomotive roof maintenance method, characterized in that: The following steps are involved: (1) Dismantling the bolts connecting the top cover and the car body: When the locomotive is dismantled at the first level, the bolts connecting the top cover and the car body are removed; (2) Lifting the top cover off the car: When the locomotive is transferred to the second-level dismantling station, the top cover is directly lifted off the car and placed on the top cover equipment disassembly station; (3) Top cover support fixture installation: Install the top cover support fixture on both sides of the top of the vehicle body; (4) Disassembly of top cover components under the vehicle: When the locomotive wire tube is disassembled, the top cover is disassembled at the top cover disassembly station to complete the disassembly process of the top cover equipment under the vehicle; (5) Lift the top cover back onto the vehicle body: Lift the top cover back onto the vehicle body and buckle it on top of the vehicle body; (6) Sandblasting of vehicle body; (7) The top cover is hoisted off the vehicle; (8) Top cover inspection: When the vehicle body is inspected, the top cover is inspected at the inspection station, and deformation, attachments and undisassembled accessories are inspected; (9) Lifting the top cover back to the vehicle body: After the top cover inspection is completed, lift the top cover back to the vehicle body and buckle it on top of the vehicle body; (10) Top cover painting: The top cover is painted in the paint warehouse along with the vehicle. The top cover is painted by roller coating, and the bottom cover is painted by spraying along with the paint inside the vehicle. (11) Lifting and unloading of the top cover: After the locomotive is painted, it is transferred to the locomotive assembly, and the top cover is lifted and unloaded from the locomotive and placed on the top cover buffer position; (12) Installation of top cover components under the vehicle: the top cover is hoisted to the component assembly platform; (13) Disassembly of top cover support tooling; (14) Top cover lifting: After completing the assembly process of the top cover lower parts, the top cover is lifted.

2. A locomotive roof maintenance method according to claim 1, characterized in that: The top cover supporting tooling comprises a column, a screw seat arranged at the lower end of the column, a pad arranged at the upper end of the column and a skirt plate arranged on the outer wall of the column.

3. A locomotive roof maintenance method according to claim 2, characterized in that: The screw seat of the top cover supporting tooling is threadedly connected to the vehicle body, the pad of the top cover supporting tooling contacts the bottom surface of the top cover, the skirt plate of the top cover supporting tooling contacts the reinforcing beam at the bottom of the top cover, and the top cover is limited by the top cover supporting tooling on both sides.

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