CN215748910U

CN215748910U - CR400BF-A type EMUs rotation type grinds son and changes frock

Info

Publication number: CN215748910U
Application number: CN202121196819.1U
Authority: CN
Inventors: 刘明建; 程勇; 吴世雷; 乔鑫; 路飞; 郑健浩; 唐哲; 宋宁; 郭旺盛; 刘治理; 王昆
Original assignee: Zhengzhou High Speed Train Section of China Railway Zhengzhou Group Co Ltd
Current assignee: Zhengzhou High Speed Train Section of China Railway Zhengzhou Group Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-02-08
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a tool for replacing a rotary grinder of a CR400BF-A motor train unit, which comprises an operating rod, wherein a sleeve is sleeved on the operating rod, the sleeve is in threaded connection with the operating rod, two sides of the front end part of the operating rod are respectively hinged with a connecting rod I and a connecting rod II, two sides of the sleeve, which are far away from the front end part of the operating rod, are respectively hinged with a connecting rod III and a connecting rod IV, the connecting rod I is hinged with the connecting rod III, the connecting rod II is hinged with the connecting rod IV, the tail ends of the connecting rod III and the connecting rod IV are respectively connected with a first clamping jaw and a second clamping jaw, and the first clamping jaw is perpendicular to the second clamping jaw. The tool is simple and easy to operate, the operation flow of replacing the grinder of the motor train unit is simplified, the operation precision and the operation efficiency are improved, the time for replacing the grinder through the tool is shortened by 58% compared with the manual operation, meanwhile, the danger during the disassembly and the assembly of the grinder is reduced to the minimum, and the risks of rebound of compressed air in the rubber corrugated pipe and falling off when the grinder is taken out are avoided.

Description

CR400BF-A type EMUs rotation type grinds son and changes frock

Technical Field

The utility model belongs to the technical field of auxiliary tools of high-speed trains, and particularly relates to a grinder replacing tool particularly suitable for a CR400BF motor train unit tread cleaning device.

Background

Compared with the CRH380B motor train unit, the CR400BF motor train unit has the advantages that the tread cleaning function is added, and the grinding sub module is added to the bogie. The grinder belongs to a vulnerable and easily-consumed part in the application process of the motor train unit, and is replaced frequently in the maintenance process. Each train of CR400BF type motor train unit is provided with 64 grinders, and the grinders share 5184 pieces calculated by the current 63 groups of CR400BF type motor train units and 9 groups of CR400BF-A type motor train units, so that the replacement quantity is large when the abrasion reaches the limit. At present, the replacement mode is only manual operation replacement, and due to the structural limitation of the bogie of the motor train unit, the replacement space is narrow, the replacement time is long, and the replacement efficiency is low. Therefore, aiming at the difficult problem, the replacement efficiency of the wearing part is improved by manufacturing a special replacement tool, and the aims of safety, rapidness and low risk are fulfilled.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the rotary grinding wheel replacing tool suitable for the CR400BF-A motor train unit is designed by combining the vehicle structure, the operation flow of replacing the grinding wheel of the motor train unit is simplified, and the operation precision and the operation efficiency are improved.

The technical scheme is as follows: the utility model provides a CR400BF-A type EMUs rotation type grinds son and changes frock, including the action bars, the cover is equipped with the sleeve on the action bars, sleeve and action bars threaded connection, the preceding tip both sides of action bars articulate connecting rod I, connecting rod II respectively, the sleeve is kept away from the both sides of action bars preceding tip and articulates connecting rod III and connecting rod IV respectively, connecting rod I and connecting rod III articulate, connecting rod II and connecting rod IV articulate, connecting rod III and connecting rod IV end are all connected first jack catch and second jack catch, first jack catch perpendicular to second jack catch.

The first clamping jaw comprises a first connecting rod and a first stop block which are perpendicular to each other, the second clamping jaw comprises a second connecting rod, a third connecting rod and a fourth connecting rod which are perpendicular to each other, and the first connecting rod is perpendicular to the second connecting rod.

The connecting rod III and the connecting rod IV are both of a broken line type, the bending angle alpha is 120-150 degrees, and a hinge shaft is arranged at the bending position.

The included angle beta between the connecting rod III and the first connecting rod is 140-160 degrees, and the included angle beta between the connecting rod IV and the first connecting rod is 140-160 degrees.

Has the advantages that: (1) the grinding body is clamped in a spiral rotating mode of the handle, so that the tool can still be clamped on the grinding body after the hand is loosened, and the tool and the grinding body cannot fall off even if errors occur.

(2) Through the screw drive mode, be difficult to skid or loosen when dismantling.

(3) The first clamping jaw is bent by a certain angle, so that the replacement operation in a narrow space is facilitated.

By using the rotary grinding element replacing tool disclosed by the utility model, the operation flow of replacing the grinding element of the motor train unit is simplified, the operation precision and the operation efficiency are improved, the time for replacing the grinding element by using the tool is shortened by 58% compared with the manual operation, meanwhile, the danger during the disassembly and assembly of the grinding element is reduced to the minimum, and the rebound of compressed air in a rubber corrugated pipe and the risk of falling off when the grinding element is taken out are avoided; the utility model is simple and easy to operate, and is particularly suitable for CR400BF motor train units.

Drawings

FIG. 1 is a first schematic view of a tread cleaning device.

FIG. 2 is a second schematic view of the tread surface cleaning device.

FIG. 3 is a cross-sectional view of the tread surface cleaning device.

Fig. 4 is a view showing the state of the hook after releasing the grinder.

Figure 5 is a view of the hook engaging grinder.

Fig. 6 is a schematic structural diagram of the present invention.

FIG. 7 is a front view of the grinder of the present invention.

Figure 8 is a side view of the grinder of the present invention.

101-cylinder barrel, 102-piston rod, 103-stop pin, 104-pin, 105-brake shoe (grinder), 1051-connecting block, 106-spring, 107-stop pin seat, 108-return spring, 109-connector, 110-hook;

1-an operating rod, 2-a sleeve, 3-a connecting rod I, 4-a connecting rod II, 5-a connecting rod III, 6-a connecting rod IV, 7-a first claw, 71-a first connecting rod, 72-a first stop block, 8-a second claw, 81-a second connecting rod, 82-a third connecting rod and 83-a fourth connecting rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 and 2, the tread surface cleaning device includes the following basic components: the cylinder 101, piston rod 102, stopper pin 103, pin 104 and shoe (grinder) 105, the main parameters of the tread surface cleaning device are shown in table 1. The tread cleaning device is used for wiping dust, rust, grease and the like attached to the tread of a wheel during running of the motor train unit, and pressing the grinding roller on the tread for cleaning during braking in order to prevent idling and slipping. Operation conditions of the tread surface cleaning device: A. the speed is above 30KM/h, and the train is braked; B. an idling or sliding phenomenon occurs, and the above A, B condition is met.

TABLE 1

The tread cleaning device is fixed on the brake clamp holder on the bogie frame by four bolts, as shown in fig. 3, after being pressurized by a connector 109, the piston rod 102 is pushed out, and a brake shoe (grinder) 105 arranged at the head end of the piston contacts and abuts against the tread of the wheel. Upon release, piston rod 102 and brake shoe 105 are reset by return spring 108. The connecting pin of the polishing head bracket is supported by vibration-proof rubber, and absorbs the inclination of the wheel, so as to prevent the partial abrasion of the polishing head and reduce the vibration. After the brake shoe (grinder) 105 and the wheel tread are worn, the top of the stopper pin seat 107 (mounted in the groove of the piston rod) pushes the stopper pin 103 pressed by the spring 106 up and over, thereby keeping the gap between the brake shoe (grinder) 105 and the wheel tread within the range of about 15-22 mm. When air remains in the cylinder, the stopper pin 103 needs to be pulled out 2 to 3 times to perform air exhaust.

The grinding body 105 comprises a friction block which has the same arc shape with the contact position of the wheel tread and a back plate connected with a tread sweeper brake shoe support, the back plate comprises an upper back plate matched with the tread sweeper brake shoe support loading and unloading structure and a lower back plate connected with the friction block, a connecting block 1051 is arranged on the upper back plate, and the specific structure can be seen in Chinese utility model patent 201020546612.8.

The existing original grinding unit replacing method and the existing problems

The service limit (effective abrasion amount) of the grinder reaches 30mm, namely the grinder needs to be replaced before the residual thickness of the grinder reaches 10 mm. At present, the mode of changing the grinder is manual bare-handed change, and because EMUs bogie structure restriction, it is narrower to change the space, leads to changing the outstanding problem that the activity duration is long, work efficiency is low, and there is the bodily injury operation risk.

Before the grinding unit is disassembled, the stop pin (with the spring load of about 2kgf) needs to be pulled out firstly, residual compressed air in the cylinder barrel of the tread cleaning device is exhausted, the stop pin is released after the brake shoe (the grinding unit) is completely reset, and if the grinding unit is not completely reset, the residual compressed air in the cylinder barrel is not exhausted completely, and the stop pin needs to be pulled out for 2-3 times for exhausting.

When the grinder is detached, the two claws of the hook are spread outwards, the grinder is loosened, the thick hook of the grinder is loosened, and the state is shown in fig. 4, at the moment, under the closed state of the hooks 110 at two sides (the spring resilience is about 2kgf), the grinder is moved to the outer side of the bogie by hands after the hooks are loosened, and then the grinder is detached (the wheel rim side of the reverse wheel); when the grinder is mounted, a new grinder is fitted into the mounting plate from the outside of the bogie (the wheel rim side of the reverse wheel) and the grinder is inserted, and then the grinder is held normally as shown in fig. 5.

As shown in figure 6, a frock is changed to CR400BF-A type EMUs rotation type grinder, including action bars 1, the cover is equipped with sleeve 2 on the action bars 1, sleeve 2 and 1 threaded connection of action bars, connecting rod I3, connecting rod II 4 are articulated respectively to the front end both sides of action bars 1, sleeve 2 keeps away from the both sides of 1 front end of action bars and articulates connecting rod III 5 and connecting rod IV 6 respectively, connecting rod I3 and connecting rod III 5 are articulated, connecting rod II 4 and connecting rod IV 6 are articulated, first jack catch 7 and second jack catch 8 are all connected to connecting rod III 5 and connecting rod IV 6 terminal, first jack catch 7 is perpendicular to second jack catch 8.

The first jaw 7 includes a first connecting rod 71 and a first stopper 72 which are perpendicular to each other, and the second jaw 8 includes a second connecting rod 81, a third connecting rod 82 and a fourth connecting rod 83 which are perpendicular to each other, the first connecting rod 71 and the second connecting rod 81 being perpendicular to each other.

The connecting rods III 5 and IV 6 are both of a broken line type, the bending angle alpha is 120-150 degrees, a hinge shaft is arranged at the bending position, and the broken line type connecting rods III 5 can be integrally formed or two rods can be formed by welding or other fixed connection modes; the connecting rod iii 5, the first connecting rod 71 and the first stopper 72 may be integrally formed, bent to a desired angle by a bending machine, or fixedly connected by several rods. The operating rod, the connecting rod III and the connecting rod IV are on the same horizontal plane, the included angle beta between the connecting rod III 5 and the first connecting rod 71 is 140-160 degrees, and preferably 150 degrees, namely the included angle beta between the first connecting rod 71 and a plane formed by the operating rod, the connecting rod III and the connecting rod IV is 140-160 degrees, and the connecting rod IV 6 and the connecting rod III 5 are the same.

The width direction of the grinding body is tightly clamped by the first clamping jaw 7 consisting of the first connecting rod 71 and the first stop dog 72 which are perpendicular to each other, the thickness direction of the grinding body is tightly clamped by the second connecting rod 81 and the third connecting rod 82 which are perpendicular to each other by the second clamping jaw 8, the first clamping jaw and the second clamping jaw are mutually matched and act together to realize the positioning of the grinding body, when the grinding body is replaced by the tool, the grinding body is fixed firmly, the grinding body is prevented from falling off in the replacement process, and the replacement process is smoother.

The operating rod is connected with the sleeve through threads, and the thread design ensures that the grinding element is not easy to slip or loosen when being detached.

The first clamping jaw formed by the first connecting rod and the first stop block is a hook-shaped clamping groove pull rod, the first clamping jaw is tightly attached to a front friction block of the grinder, the wall thickness of the grinder is tightly hooked, the grinder cannot easily fall off even if a fault occurs, and the structure has a certain bending angle, so that the replacement operation in a narrow space is facilitated.

The working process is as follows: when the grinder is disassembled, the first clamping jaw and the second clamping jaw of the disassembling tool are clamped and clamped to be ground, the third connecting rod is located on the inner side of the hook, the operating rod is rotated clockwise, the operating rod and the sleeve are enabled to move relative to each other, the connecting rod I, the connecting rod II, the connecting rod III and the connecting rod IV form a connecting rod mechanism which drives the first clamping jaw (the second clamping jaw) to be away from each other, the third connecting rod stretches open the hook 110 when moving outwards, the hook 110 is unlocked, the clamping effect of the hook on the grinder is relieved, and the disassembly of the grinder is achieved.

Has the advantages that:

compared with manual operation, the replacement time of the CR400BF motor train unit grinder is shortened by 58%, the operation flow of replacement of the motor train unit grinder is simplified, the operation efficiency is improved, and the labor and labor cost are saved.

The technical practicability is strong, the design meets the actual requirements of the site, the inconvenience caused by limited space of the site operation is solved, and the practical convenience is brought to the site operation personnel.

Before the motor train unit grinder is not used for replacing the tool, the fingers and the arms are in the risk of rebound damage of compressed air and smashing damage of the grinder. After the motor train unit grinding unit is used for replacing the tool, dangerousness in the process of disassembling and assembling the grinding unit is fundamentally eliminated, and the risks of rebound of compressed air in the rubber corrugated pipe and falling off when the grinding unit is taken out are avoided. The motor train unit grinder replacing tool is simple, convenient and safe in operation, high in technical practicability, capable of meeting the actual field requirements in design, capable of solving the inconvenience caused by limited field operation space and capable of bringing practical convenience to field operation personnel.

Claims

1. The utility model provides a CR400BF-A type EMUs rotation type grinds son and changes frock which characterized in that: including the action bars, the cover is equipped with the sleeve on the action bars, sleeve and action bars threaded connection, and connecting rod I, connecting rod II are articulated respectively to the preceding tip both sides of action bars, and the sleeve is kept away from the both sides of the preceding tip of action bars and is articulated connecting rod III and connecting rod IV respectively, and connecting rod I and connecting rod III are articulated, and connecting rod II and connecting rod IV are articulated, and connecting rod III and connecting rod IV end are all connected first jack catch and second jack catch, first jack catch perpendicular to second jack catch.

2. The tool for replacing the rotary grinder of the CR400BF-A motor train unit according to claim 1, wherein: the first clamping jaw comprises a first connecting rod and a first stop block which are perpendicular to each other, the second clamping jaw comprises a second connecting rod, a third connecting rod and a fourth connecting rod which are perpendicular to each other, and the first connecting rod is perpendicular to the second connecting rod.

3. The tool for replacing the rotary grinder of the CR400BF-A motor train unit according to claim 1, wherein: the connecting rod III and the connecting rod IV are both of a broken line type, the bending angle alpha is 120-150 degrees, and a hinge shaft is arranged at the bending position.

4. The tool for replacing the rotary grinder of the CR400BF-A motor train unit according to claim 1, wherein: the included angle beta between the connecting rod III and the first connecting rod is 140-160 degrees, and the included angle beta between the connecting rod IV and the first connecting rod is 140-160 degrees.