CN209356055U - The Anti-loose dustproof cover component of transducer valve on a kind of weight measurement mechanism - Google Patents

Abstract

The utility model provides a kind of Anti-loose dustproof cover component of transducer valve on weight measurement mechanism, belongs to field of mechanical technique.Transducer valve includes contact and valve body, this dustproof cover component includes the dust boot body being located on valve body and the mounting head that is set at the top of contact, dust boot body lower ending opening, mounting head is arranged at the top inner wall of dust boot body, mounting head includes four iron cores, each iron core is circumferentially evenly distributed in dust boot body, iron core includes fan-shaped interconnecting piece and the parcel vertical with interconnecting piece, parcel is the curved surface being adapted to contact circumferential surface, and interconnecting piece and portion envelops portion are embedded in dust boot body；The radian of parcel makes to form exhaust passage between adjacent parcel less than 0.5 π, and dust boot body with elastic material by being made.The utility model has many advantages, such as to be connected firmly, is highly-safe.

Description

The Anti-loose dustproof cover component of transducer valve on a kind of weight measurement mechanism

Technical field

The utility model belongs to field of mechanical technique, is related to a kind of Anti-loose dust cover group of transducer valve on weight measurement mechanism Part.

Background technique

Dust cover is mounted on the transducer valve of KZW-A adjustment device of empty weight/heavy weight weight measurement mechanism, main function 1, it is dust-proof, 2, upper plane and the height of inhibition disk keep predetermined size after installing.Adjustment device of empty weight/heavy weight be on the bogie of car certain One fixed position (is generallyd use across beam as measuring basis) as measuring basis, and the base position is not with respect to rail level height It can change with car body load-carrying and change, after vehicle load variation, car body can change with respect to rail level height, stress machine Structure bracket is fixedly installed on vehicle body bottom frame, so the distance of weight measurement mechanism relative measurement benchmark therein can follow car body together Variation, weight measurement mechanism can be depressured the compressed air of cylinder according to controlling checking cylinder at a distance between measuring basis and being further separated into How much, then the pressure limiting valve by being located between brake and checking cylinder control into checking cylinder and be depressured cylinder compressed air it is total Amount, so that vehicle be made to obtain corresponding brake force under the situation of different loading capacity.The system of KZW-A adjustment device of empty weight/heavy weight Dynamic system group prejudice Figure of description 1, in figure: 1, train pipe；2, dust arrester and cutout cock assembly；3, checking cylinder；4, secondary Cylinder；5, accelerate to alleviate cylinder；6,120 type control valve；7, X-A type pressure limiting valve；8, valve tube socket；9, bracket；10, it is depressured cylinder； 11, C-A type transducer valve；12, inhibit disk composition；13, across beam.Measuring basis is mostly used across beam mode, is located at bogie two Between side frame, corresponding with the weight measurement mechanism being mounted under car body central sill (part-structure is the prior art, those skilled in the art The location of dust cover and the function that should have in the application can be clearly understood by the structure of attached drawing 1).

KZW-A type Truck Empty-weight State is mainly made of weight measurement mechanism and pressure limiting valve.Weight measurement mechanism includes C-A type dust cover, transducer valve, bracket, inhibition disk, reset spring, contact etc., are shown in Fig. 2 and Fig. 3.Wherein bracket be mounted on across Above beam in car body central sill, inhibits disk to be located in scaffold tube and can slide up and down.Inhibit the contact of disk lower end and in beam The heart is corresponding, and when vehicle load increases, car body drives bracket and transducer valve to bottom offset, and inhibits disk because of contact and across beam It contacts and remains unchanged, the distance between transducer valve and inhibition disk increase.When vehicle load reduces, car body drives bracket and biography Sense valve shifts up, and disk and contact is inhibited to keep and contact across beam and position is constant, biography under the action of spring force and gravity Feel the distance between valve and inhibition disk to reduce.

To which the effect of dust cover is not only that it is needed to keep what is be not subjected to displacement to be reliably connected with contact, Er Qiexu Will be in empty parking space, gas can be discharged by dust cover in contact top, and it is dust-proof to need dust cover to carry out contact, avoids ash Dirt enters contact inner cavity.

When dust cover, which falls off or loosens, skids off installation site, distance changes between transducer valve and inhibition disk composition, It is easy to cause that braking system is leaked out or brake force changes, vehicle operational safety accident is caused to occur.

Dust cover currently in use, which is easy to loosen, to be caused to fall off, every year according to each Railway Bureau and rolling stock section, vehicle manufacture The information of factory's feedback, dust cover loosening cause driving accident to be added, always unsolved problem.

The analysis of causes is as follows:

Dust cover structure size design and transducer valve feeler lever are with transition fit is combined into, in addition the elasticity of iron core is not enough, in group Dress, test, during entrucking by being repeatedly pressed into, extracting, can be vented and can be compared in the hope of being reached by way of adjustment Good connected purpose, however influenced by environment such as temperature, dust cover is easy to loosen, furthermore, existing dust cover uses metal It is made, there is a certain error for the workpiece of batch production, and the workpiece less than critical dimension causes to waste, greater than the work of critical dimension The number that part is merged is more, it is believed that operation is extremely difficult to require.

Utility model content

The purpose of this utility model is aiming at the above problems existing in the prior art, to provide and sense on a kind of weight measurement mechanism The Anti-loose dustproof cover component of valve, technical problem to be solved in the utility model be how by the improvement of dust cover structure, It is set to meet the requirement that can be vented and be connected firmly.

The purpose of this utility model can be realized by the following technical scheme: the Anti-loose of transducer valve on a kind of weight measurement mechanism Dustproof cover component, which is characterized in that transducer valve includes contact and valve body, this dustproof cover component include be located at it is dust-proof on valve body Cover body and the mounting head being set at the top of contact, the dust boot body lower ending opening, the mounting head are arranged in dust cover At the top inner wall of ontology, the mounting head includes four iron cores, and each iron core is circumferentially evenly distributed in dust boot body, described Iron core includes that fan-shaped interconnecting piece and the parcel vertical with interconnecting piece, the parcel are the curved surface being adapted to contact circumferential surface, The interconnecting piece and portion envelops portion are embedded in dust boot body；

The radian of the parcel makes to form exhaust passage between adjacent parcel, the dust boot body less than 0.5 π By being made with elastic material.

This structure, flexible material provide the pressing force of each iron core package contact, not only make each parcel shape At " clamping cap " structure with exhaust passage, it can be pressed at the top of contact, make closely to connect between contact and mounting head, and The setting of exhaust passage enables the gas being discharged at the top of contact to be discharged except mounting head.

Dust boot body is used for the case where carrying out dust-proof processing to contact, air inlet is not present due to contact, in addition dust cover The relatively small gap between valve body enter ambient atmos will not within dust cover.

On a kind of above-mentioned weight measurement mechanism in the Anti-loose dustproof cover component of transducer valve, the dust boot body is rubber Material is made.

This dust boot body can make rubber material, PVC material, steel material or other metal materials, it is only necessary to which it has There is certain elasticity, to whole metal materials with elastic material and in high molecular material is encompassed by the application, Any equivalent material with the above function is within the scope of protection of this application.

On a kind of above-mentioned weight measurement mechanism in the Anti-loose dustproof cover component of transducer valve, the top surface of the dust boot body There are rounded corners between the outside wall surface of parcel.

It is dust-proof at the top of mounting head on a kind of above-mentioned weight measurement mechanism in the Anti-loose dustproof cover component of transducer valve Cover top surface is step surface.

The presence of step surface is to prevent air-flow from causing to rush to dust boot body to give contact top vent evacuation It is larger and influence the base position of dust cover to hit power.

In the application, the number of iron core can be 4,2,3 or four or more, and the application is intended merely to preferably retouch State its specific structure and by taking 4 iron cores as an example, the iron core of other numbers, it is only necessary to which its each section is evenly distributed on the week of contact It encloses, and there is gap between adjacent iron cores.

Detailed description of the invention

Fig. 1 is that KZW-A adjustment device of empty weight/heavy weight weight measurement mechanism is applied and the structural schematic diagram on track.

Fig. 2 is the structural schematic diagram of weight measurement mechanism.

Fig. 3 is the structural schematic diagram under transducer valve and dust cover mated condition.

Fig. 4 is the planar structure schematic diagram of dust cover.

Fig. 5 is the structural schematic diagram in the direction A in Fig. 4.

Fig. 6 is the sectional view in Fig. 5 on the direction B-B.

Fig. 7 is the schematic perspective view of mounting head.

In figure, 21, contact；22, valve body；31, dust boot body；311, step surface；32, mounting head；321, iron core； 3211, interconnecting piece；3212, parcel；322, exhaust passage.

Specific embodiment

It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these examples.

As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, transducer valve includes contact 21 and valve body 22, this dustproof cover component Including the dust boot body 31 being located on valve body 22 and the mounting head 32 being set at the top of contact 21,31 lower end of dust boot body Opening, mounting head 32 are arranged at the top inner wall of dust boot body 31, and mounting head 32 includes four iron cores 321, each iron core 321 It is circumferentially evenly distributed in dust boot body 31, iron core 321 includes fan-shaped interconnecting piece 3211 and vertical with interconnecting piece 3211 Parcel 3212, parcel 3212 are the curved surface being adapted to 21 circumferential surface of contact, and interconnecting piece 3211 and portion envelops portion 3212 are embedded In dust boot body 31；

The radian of parcel 3212 makes to form exhaust passage 322, dust cover sheet between adjacent parcel 3212 less than 0.5 π Body 31 with elastic material by being made.

This structure, flexible material provide the pressing force that each iron core 321 wraps up contact 21, not only make each package Portion 3212 forms " clamping cap " structure with exhaust passage 322, can be pressed on 21 top of contact, make contact 21 and mounting head It is closely connected between 32, and the setting of exhaust passage 322 enables the gas being discharged at the top of contact 21 to be discharged except mounting head 32.

Dust boot body 31 is used for the case where carrying out dust-proof processing to contact 21, air inlet is not present due to contact 21, in addition Relatively small gap between dust cover and valve body 22 enter ambient atmos will not within dust cover.

Dust boot body 31 is made of rubber material.This dust boot body 31 can make rubber material, PVC material, steel Material or other metal materials, it is only necessary to which it is with certain elasticity, to all gold with elastic material in the application Belong in material and high molecular material be encompassed by, any equivalent material with the above function the protection scope of the application it It is interior.

There are rounded corners between the top surface of dust boot body 31 and the outside wall surface of parcel 3212.It is pushed up positioned at mounting head 32 The dust cover top surface in portion is step surface 311.The presence of step surface 311 is prevented to give contact 21 top vent evacuation Only air-flow causes impact force larger dust boot body 31 and influences the base position of dust cover.

In the application, the number of iron core 321 can be 4,2,3 or four or more, and the application is intended merely to more preferably Its specific structure of description and by taking 4 iron cores 321 as an example, the iron core 321 of other numbers, it is only necessary to which its each section is evenly distributed on Around contact 21, and there is gap between adjacent iron cores 321.

The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.

Claims (4)

1. the Anti-loose dustproof cover component of transducer valve on a kind of weight measurement mechanism, which is characterized in that transducer valve include contact (21) and Valve body (22), this dustproof cover component include the dust boot body (31) being located on valve body (22) and are set at the top of contact (21) Mounting head (32), dust boot body (31) lower ending opening, the mounting head (32) is arranged in dust boot body (31) At top inner wall, the mounting head (32) includes four iron cores (321), and each iron core (321) is circumferentially evenly distributed on dust cover sheet On body (31), the iron core (321) includes fan-shaped interconnecting piece (3211) and the parcel vertical with interconnecting piece (3211) (3212), the parcel (3212) is the curved surface being adapted to contact (21) circumferential surface, the interconnecting piece (3211) and portion envelops Portion (3212) is embedded in dust boot body (31)；

The radian of the parcel (3212) makes to form exhaust passage (322) between adjacent parcel (3212), institute less than 0.5 π Dust boot body (31) is stated by being made with elastic material.

2. according to claim 1 on a kind of weight measurement mechanism transducer valve Anti-loose dustproof cover component, which is characterized in that it is described Dust boot body (31) is made of rubber material.

3. the Anti-loose dustproof cover component of transducer valve on a kind of weight measurement mechanism according to claim 1 or claim 2, which is characterized in that There are rounded corners between the top surface of the dust boot body (31) and the outside wall surface of parcel (3212).

4. the Anti-loose dustproof cover component of transducer valve on a kind of weight measurement mechanism according to claim 1 or claim 2, which is characterized in that Dust cover top surface at the top of mounting head (32) is step surface (311).