Mounting device for hanging type 120-type air control valve

Abstract

The invention discloses a mounting device for a hanging type 120-type air control valve. The device comprises a mounting seat which comprises a lifting plate, an outer side plate and an inner side plate, the lifting plate, the outer side plate and the inner side plate are connected to form a U shape, the lower end of the mounting seat and a chassis of a vehicle form a floor, the lifting plate is used for mounting the hanging type 120-type air control valve, a first opening is formed in the inner side plate, and two sides of the mounting seat are open; the device further comprises a front protective cover and a rear protective cover which are detachably connected with the mounting seat, wherein the front protective cover and the rear protective cover can block the two open sides of the mounting seat respectively, and clamping hook structures are arranged on the front protective cover and the rear protective cover; the device further comprises locking mechanisms which are arranged on the two sides of the mounting seat, the locking mechanisms are matched with the clamping hook structures, the locking mechanisms can lock the clamping hook structures, and the front protective cover and the rear protective cover are fixed to the mounting seat; the mounting seat, the detachable front protective cover and the detachable rear protective cover are adopted to form a mounting and protecting structure, so that reliable mounting of the hanging type 120-type air control valve can be guaranteed, and the hanging type 120-type air control valve can be conveniently disassembled.

Description

technical field [0001] The invention belongs to the technical field of railway vehicle design, and more specifically relates to a hanging type 120 type air control valve installation device. Background technique [0002] The railway freight car vehicle is mainly composed of car body, running part, brake device, coupler buffer device and so on. The 120-type air control valve is the core component of the brake device, which mainly realizes the braking and release of the vehicle, and is the control center of the brake device. Such as figure 1 As shown, the 120-type air control valve (hereinafter referred to as the 120-type control valve) is composed of a main valve 101, a semi-automatic relief valve 102 (hereinafter referred to as the relief valve), an emergency valve 103 and an intermediate body 104. The main valve 101 and the emergency valve 103 are respectively used The bolts and nuts are installed on two adjacent vertical surfaces of the intermediate body 104, and the rel...

AI Technical Summary

Problems solved by technology

[0005] But this mounting seat has the following problems: when the side wall plate 11 and the bolster 110 connected to the mounting seat plate 107 are severely corroded and need to be repaired and replaced by the factory, the valve mounting seat 105 must also be cut off and the valve mounting seat 105 mother will be cut during the removal process. When assembling, it is necessary to add a new valve mounting seat 105, which affects the maintenance cost and maintenance efficiency; the valve mounting seat 105 is assembled and welded by various specifications of plates and section steel, and the welding workload is large, causing great environmental pollution; the valve Mounting seat 105 assembly welding needs to involve multiple manufacturing processes such as blanking, drilling, and assembly welding. There are cumbersome raw material procurement and access to parts, time-consuming and laborious, long manufacturing cycle, low production efficiency, and difficult quality assurance and manufacturing. Or problems such as high maintenance costs

However, during operation, due to factors such as low manufacturing and maintenance quality or poor operating environment, the 120-type control valve may have temporary failures, and the cut-off plug door of the vehicle needs to be closed, commonly known as the closing car. The grouping of the closing car in the train is clearly It is stipulated that the vehicle operation department must first dismantle the protective device when the train fleet handles the closed car

Because the transportation organization of the railway bureau is often relatively tight, if the closed car is picked up and sent to the station for temporary repairs, the train shunting personnel at the station are required to perform the car dumping operation, which will also affect the train’s punctual departure due to the car dumping operation, especially when it is concentrated to the departure point. In some cases, it is more difficult to dump the car, and the contradiction between the needs of operation and maintenance and transportation organization is more prominent

In the case of both transportation organization and operation maintenance, the only option is to repair the closed-door car in the train fleet; the efficiency of repairing the closed-door car with a brake failure in the train fleet is low, and the damage to the protective cover 109 cannot be recovered. Because the protective cover 109 has a special structure, After the bolts and nuts are spot welded, they cannot be disassembled on site. It is difficult to saw the bolts with a saw blade. At present, most of the vehicle operating systems choose to use the bow saw intermediate to connect the anti-theft cover steel plate of the branch pipe, and separate the brake valve from the protective cover 109. carry out replacement repair

This method is labor-intensive and inefficient, and it is difficult to complete within the technical inspection time. At the same time, after using this method to deal with the closed car, the protective cover has been "destructively" processed. In the train team, the anti-theft cover cannot be restored to its original state. Simple binding with iron wire, if the binding is not firm, there is still a hidden danger that the protective cover 109 will fall off during the operation of the vehicle; in addition, the cutting part will need to be repaired by welding when performing section repairs or factory repairs in the future, resulting in greater waste

[0009] The design of the suspension-mounted protective cover 109 for the 120-type control valve of the existing railway hopper car does not fully consider the needs of train inspection site maintenance, especially the spot welding of mounting bolts and nuts. Only the functions of preventing loss and damage are considered, and the vehicle is not considered According to the needs of the train fleet of the system, although the relevant regulations can detain the closed car with a protective cover 109 into the station repair site for processing, but often due to the needs of the transportation organization, in most cases, it needs to be processed in the train fleet, even if it is buckled The way to deal with inbound repair work is also oxygen cutting installation bolts and nuts, which is also destructive disassembly; at present, the tools used for processing the protective cover 109 in the vehicle operation system are mainly saw bows, because the bolts and nut steel at the spot welding parts The material changes, the hardness is higher, and it is more difficult to handle the saw bow. If oxygen cutting is used, there will be a greater safety hazard in on-site pick-up and handling; if pneumatic cutting or electric cutting is used, it is also inconvenient to carry. Restricted by factors such as space and sparks during processing, there are certain potential safety hazards. The mismatch of on-site maintenance tools increases the difficulty of processing, and to a certain extent also restricts the enthusiasm for on-site processing of closed-door vehicles, which is not conducive to the improvement of the overall operating quality of vehicles.

[0010] The existing railway hopper car 120 type control valve suspension installation protective cover also has the following problems: the protective cover 109 has many components and mounting bolts, and the assembly and disassembly are time-consuming and laborious, which affects the assembly efficiency and quality, poor reliability, and high manufacturing and maintenance costs , the overall economic benefit is relatively poor; when disassembling the protective cover 109 needs to cut bolts or rivets, it is easy to burn out the mounting holes, causing the protective cover 109 to need to be welded to process holes or scrapped; the existing protective cover 109 is not well sealed, which easily causes the valve to be damaged. Rainwater erosion and corrosion will affect the life of the valve and cause failures; the protective cover 109 adopts the structure of steel plate assembly welding, which requires a lot of welding in use and pollutes the environment; the installation bolts of the protective cover 109 near the side wall are relatively close to the side wall panels, resulting in a narrow space , the space for wrench movement is limited, and it is time-consuming and laborious to fasten the bolts or urgently need to be disassembled in case of emergency failure, and spot welding is also difficult after the bolts and nuts are tightened; the existing 120-type control valve consists of emergency valve or main valve or semi-automatic When any failure of the relief valve occurs, the protective cover 109 needs to be disassembled as a whole before maintenance. Due to the large number of fasteners, it takes a lot of time to disassemble and reassemble after maintenance.

[0011] The existing 120-type control valve suspension mounting seat and protective cover device have a high probability of welding defects due to many welds, and welding defects will directly affect the strength of the valve mounting seat 105 and the normal protection of the protective cover 109, which may cause traffic safety. ACCIDENT

[0012] With the rapid development of my country's railway hopper cars and the improvement of the overall design and manufacturing level of vehicles, traditional mounting seats and protective devices can no longer meet the requirements of anti-theft, anti-smashing, anti-damage, convenient disassembly and installation, and commercialization.

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