CN201436223U - Brake cylinder of lorry brake device - Google Patents
Brake cylinder of lorry brake device Download PDFInfo
- Publication number
- CN201436223U CN201436223U CN2009200878311U CN200920087831U CN201436223U CN 201436223 U CN201436223 U CN 201436223U CN 2009200878311 U CN2009200878311 U CN 2009200878311U CN 200920087831 U CN200920087831 U CN 200920087831U CN 201436223 U CN201436223 U CN 201436223U
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- cylinder
- piston
- brake
- cylinder body
- railway truck
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Abstract
The utility model discloses a brake cylinder of a lorry brake device, solving the problems of large abrasion loss of traditional brake cylinder parts, poor seal property and poor working stability. The brake cylinder is composed of a cylinder body, a piston arranged in the cylinder and a piston push rod integrally and rigidly connected with the piston. The bottom of the cylinder body is provided with air inlet and outlet flange elbow, a release spring is arranged between the piston and the cylinder cover, and the upper end of the piston push rod extends outside the cylinder cover. An integral membrane is covered on a working end surface of the piston, and seal space is formed between the integral membrane and the bottom of the cylinder, thereby providing self-sealing property. By arranging stroke mark, the utility model is also provided with function of automatically marking stroke of the brake piston. The utility model is provided with simple structure, good seal effect, less abrasion loss, high reliability and long service life.
Description
Technical field
The utility model relates to the railway truck brake equipment, refers to a kind of brake cylinder of railway truck brake equipment particularly.
Background technology
Along with the fast development of railway transportation, also more and more higher to the requirement of railway truck brake equipment.Brake cylinder is one of critical component of brake equipment, and the quality of its performance is very big to the reliability and the influence in service life of whole brake equipment.At present, though the principal mode brake cylinder that domestic railway truck brake equipment is adopted can satisfy the requirement in service life basically, aspect reliability, still there is following defective:
One, existing brake cylinder piston rod adopts extrusion type sealed structure, piston rod rubbed with poted assemblies back and forth in when motion, not only wear away very big, sealing property is relatively poor, and influences the service life of poted assemblies.Simultaneously, this structure does not have lateral flexibility.Because the foundation brake lever that is connected with brake cylinder has the characteristics of circular motion, connected part can produce cross travel, cause piston rod can not with foundation brake lever direct connection, and need in piston rod, increase a push rod, link to each other indirectly with the foundation brake lever by push rod, need to leave enough gaps between push rod outer wall and the piston rod inwall like this, satisfying the requirement of foundation brake lever circular motion, thereby make the structure relative complex that becomes.
Its two, existing brake cylinder piston mainly adopts the y-type seal ring sealing, requires very high to stack-mounted.And y-type seal ring should be realized and inboard wall of cylinder block between sealing, realize again and piston between sealing, the difficult control of sealing effectiveness.
Its three, the inner surface of cylinder block of existing brake cylinder is too smooth, cylinder fat is easy to run off on the one hand, causes the lubricating cylinders deleterious, y-type seal ring wearing and tearing aggravation, formation is sewed; The performance of its opposing foreign matter is lower on the other hand, enter the small foreign body of brake cylinder, in the process of brake cylinder reciprocating motion of the pistons, very easily cause inboard wall of cylinder block, seal ring scuffing or form rust deposite, sew thereby also form, finally cause the brake cylinder reliability to reduce, and then reduction of service life.
Its four, whether existing piston travel meets the requirements, and needs manually to measure with chi, has so greatly restricted the work efficiency of station inspector, has prolonged row and has examined production time.
Summary of the invention
The purpose of this utility model will solve above-mentioned existing in prior technology deficiency exactly, provides a kind of simple in structure, good sealing effect, abrasion loss is few, reliability is high, the brake cylinder of the railway truck brake equipment of long working life.
For achieving the above object, the brake cylinder of the railway truck brake equipment that the utility model is designed, mainly by cylinder body, be arranged on the piston in the cylinder body and form with the piston push rod that the piston rigidity is connected as a single entity.The bottom of cylinder body is provided with turnover gas flanged bend, is provided with release spring between piston and the cylinder cap, and stretch out outside the cylinder cap upper end of piston push rod.Its special character is: the operative end surface of piston is coated with the integral type diaphragm, forms a fully enclosed space between the bottom of this integral type diaphragm and cylinder body, thereby has self-packing performance.
Further, the excircle wall of described piston is set with the support ring with the cylinder body bearing fit.Support ring friction and the abrasion that can effectively avoid piston and inboard wall of cylinder block are set, significantly prolong the service life of piston and cylinder body.Simultaneously, support ring is simple in structure, assembling is easy, is convenient to timely replacing after the wearing and tearing, can significantly reduce the whole cost of brake cylinder.
Further, be processed with the corrugated stria on the internal face of described cylinder body.Being provided with of corrugated stria can effectively stop cylinder fat to run off, and contains the fine particle dust, thereby improves the lubricity and the anti-foreign matter performance of cylinder body, reduces the wearing and tearing between the movable parts, guarantees that the movable parts working stability is reliable.
Again further, be provided with the flexible annular dust boot between described piston push rod and the cylinder cap, the interior ring limit of described flexible annular dust boot is fixedly set on the shaft of piston push rod, and the outer annular edge of described flexible annular dust boot is fixedly mounted on the cylinder cap.The flexible annular dust boot can stretch with the crank motion of piston push rod, effectively eliminated the drawback that conventional piston bar and poted assemblies rub back and forth, and the intermediate throughholes that can guarantee cylinder cap is isolated from the outside all the time, thereby prevents that effectively dust granules is to the infringement in the cylinder body.
The main advantage of the utility model is: designed integral type diaphragm at the pistons work end face has replaced traditional Y type annular seal ring, and not only it is simple in structure, assembling is easy, and large-area diaphragm has more reliable and stable self sealss performance.Like this, the accuracy of manufacture of piston is required and can correspondingly reduce, also be easy to guarantee the performance after the whole assembling of brake cylinder, thereby can effectively reduce the abrasion between piston and the cylinder body, improve the brake cylinder reliability of operation, prolong the work life of brake cylinder.Simultaneously, owing to adopt piston and piston push rod rigidity integral structure, have auto-reset function, help the alleviation of railway truck brake beam at the effect lower piston push rod of release spring.
Description of drawings
Fig. 1 is a kind of contour structures scheme drawing of brake cylinder of railway truck brake equipment;
Sectional structure scheme drawing when Fig. 2 is in braking mode for brake cylinder shown in Figure 1;
Sectional structure scheme drawing when Fig. 3 is in relieved state for brake cylinder shown in Figure 1.
The specific embodiment
Below in conjunction with the drawings and specific embodiments brake cylinder of the present utility model is described in further detail:
The brake cylinder of the railway truck brake equipment shown in the figure comprises cylinder body 12 and cylinder cap 9, and cylinder body 12 and cylinder cap 9 can be selected stainless steel for use, to improve its decay resistance and service life.Cylinder body 12 adopts spinning process to make, and is fixedly mounted on the cylinder seat 2.Cylinder cap 9 is by bolt assembly 3, liner 10 fastening being installed on the cylinder body 12.Be connected to turnover gas flanged bend 5 at the bottom of cylinder body 12 face down bonding, be provided with dirt filtrating screen 4 in the turnover gas flanged bend 5, can prevent that the koniology particle is inhaled in the cylinder body 12.Opposite side is provided with adaptor union 17 in the bottom of cylinder body 12, is used for the setting pressure table and measures in-cylinder pressure, and adaptor union 17 usefulness screw plugs 16 are sealed during normal operation.Be provided with filter dirt cover 21 at pore place, the top of cylinder cap 9, be used to stop the koniology particle to suck equally, guarantee that cylinder body 12 is inner clean.
Piston 13 and piston push rod 1 are arranged in the cylinder body 12.Piston 13 adopts casting aluminium material, but expendable weight.The lower end of piston push rod 1 is fixed with one by bolt 18 and piston 13 rigidity, and stretch out outside the cylinder cap 9 upper end of piston push rod 1, is used for linking to each other with the foundation brake lever.Be provided with release spring 11 between piston 13 and cylinder cap 9, release spring 11 applies pressure towards cylinder body 12 bottoms to piston 13 all the time.Operative end surface at piston 13 is coated with integral type diaphragm 15, and integral type diaphragm 15 can fit into one by the operative end surface of mode such as chimeric, bonding or bolted and piston 13, fully enclosed space of formation between the bottom of final and cylinder body 12.
Preferred integral type diaphragm 15 is disc-shaped structure, and the operative end surface shape of piston 13 is corresponding with it, and both can nestedly fit into one.Dish wall inboard at disc integral type diaphragm 15 is provided with annular lip 15.1, is provided with annular lip 15.1 in the side of the operative end surface of piston 13 and inlays the annular groove 13.1 that cooperates, and can make both applyings more tight and firm like this.Lip limit 15.2 preferred design of disc integral type diaphragm 15 are inverted U, and it can radially stretch under compressed-air actuated effect and be adjacent to cylinder body 12 inwalls like this, thereby formed seal cavity is more reliable and more stable.
Be nested with support ring 14 with cylinder body 12 bearing fits at the excircle wall of piston 13, support ring 14 adopts nylon material to make, it intercepts between piston 13 and cylinder body 12, can either prevent that piston 13 and cylinder body 12 from direct friction taking place, can significantly alleviate abrasion again to piston 13 and cylinder body 12, also easily assembling and replacing, thereby work life cost-saved, that prolong brake cylinder.On the internal face of cylinder body 12, be processed with the corrugated stria,, further improve the reliability of brake cylinder in order to improve the lubricity and the anti-foreign matter performance of cylinder body 12.
Also be provided with flexible annular dust boot 19 between piston push rod 1 and cylinder cap 9, the interior ring limit of flexible annular dust boot 19 fixedly is nested on the shaft of piston push rod 1, with piston push rod 1 crank motion; The outer annular edge of flexible annular dust boot 19 is fixedly mounted on the centre hole inboard of cylinder cap 9 by screw 8, trim ring 20.Like this,, both can play preventing that dust granules from entering the effect of cylinder body 12, can not cause the wearing and tearing of piston push rod 1 again as not having fricting movement between the flexible annular dust boot 19 of closed component and the piston push rod 1.
Upper end at piston push rod 1 also is fixedly connected with stroke direction board 7, top at cylinder cap 9 is installed with stroke sign 6 by screw 8, stroke sign 6 is used with stroke direction board 7, can be in time intuitively brake monitoring cylinder piston stroke whether meet the requirements.
Principle of work of the present utility model is as follows: during car brakeing, pressurized air is passed dirt filtrating screen 4 and is entered in the cylinder body 12 by turnover gas flanged bend 5, force the lip limit 15.2 of integral type diaphragm 15 radially to be stretched and be adjacent to cylinder body 12 inwalls, form a seal cavity in cylinder body 12 bottoms; After pressurized air reaches certain pressure, promote piston 13 along cylinder body 12 longitudinal movements, compression release spring 11 also drives also longitudinal movement of piston push rod 1, and piston push rod 1 promotes the foundation brake lever again, forces train deceleration.In this simultaneously, can by stroke identify 6 and stroke direction board 7 observe the stroke of brake cylinders.Alleviate glancing impact, pressurized air is discharged through turnover gas flanged bend 5, under the elastic force effect of release spring 11, and piston 13 and piston push rod 1 homing, the foundation brake lever unclamps.
Claims (10)
1. the brake cylinder of a railway truck brake equipment, comprise cylinder body (12), be arranged on the piston (13) in the cylinder body (12), and the piston push rod (1) that is connected as a single entity with piston (13) rigidity, the bottom of cylinder body (12) is provided with turnover gas flanged bend (5), be provided with release spring (11) between piston (13) and the cylinder cap (9), stretch out outside the cylinder cap (9) upper end of piston push rod (1), it is characterized in that: the operative end surface of described piston (13) is coated with integral type diaphragm (15), forms a fully enclosed space between the bottom of described integral type diaphragm (15) and cylinder body (12).
2. the brake cylinder of railway truck brake equipment according to claim 1 is characterized in that: described integral type diaphragm (15) is disc-shaped structure, is nested on the operative end surface with the cooresponding piston of its shape (13).
3. the brake cylinder of railway truck brake equipment according to claim 2, it is characterized in that: the dish wall inboard of described integral type diaphragm (15) is provided with annular lip (15.1), and the side of the operative end surface of described piston (13) is provided with described annular lip (15.1) inlays the annular groove (13.1) that cooperates.
4. according to the brake cylinder of claim 1 or 2 or 3 described railway truck brake equipments, it is characterized in that: the lip limit (15.2) of described integral type diaphragm (15) is inverted U.
5. according to the brake cylinder of claim 1 or 2 or 3 described railway truck brake equipments, it is characterized in that: the excircle wall of described piston (13) is set with the support ring (14) with cylinder body (12) bearing fit.
6. the brake cylinder of railway truck brake equipment according to claim 4 is characterized in that: the excircle wall of described piston (13) is set with the support ring (14) with cylinder body (12) bearing fit.
7. according to the brake cylinder of claim 1 or 2 or 3 described railway truck brake equipments, it is characterized in that: be processed with the corrugated stria on the internal face of described cylinder body (12).
8. according to the brake cylinder of claim 1 or 2 or 3 described railway truck brake equipments, it is characterized in that: be provided with flexible annular dust boot (19) between described piston push rod (1) and the cylinder cap (9), the interior ring limit of described flexible annular dust boot (19) is fixedly set on the shaft of piston push rod (1), and the outer annular edge of described flexible annular dust boot (19) is fixedly mounted on the cylinder cap (9).
9. according to the brake cylinder of claim 1 or 2 or 3 described railway truck brake equipments, it is characterized in that: the upper end of described piston push rod (1) is connected with stroke direction board (7), and the top of described cylinder cap (9) is fixed with the stroke sign (6) that is used with described stroke direction board (7).
10. according to the brake cylinder of claim 1 or 2 or 3 described railway truck brake equipments, it is characterized in that: be provided with dirt filtrating screen (4) in the described turnover gas flanged bend (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200878311U CN201436223U (en) | 2009-07-31 | 2009-07-31 | Brake cylinder of lorry brake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200878311U CN201436223U (en) | 2009-07-31 | 2009-07-31 | Brake cylinder of lorry brake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201436223U true CN201436223U (en) | 2010-04-07 |
Family
ID=42372680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200878311U Expired - Lifetime CN201436223U (en) | 2009-07-31 | 2009-07-31 | Brake cylinder of lorry brake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201436223U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112428976A (en) * | 2020-12-15 | 2021-03-02 | 神华铁路装备有限责任公司 | Railway wagon brake cylinder monitoring device and system and railway wagon |
| CN113911091A (en) * | 2021-10-15 | 2022-01-11 | 眉山中车制动科技股份有限公司 | Intelligent brake execution unit suitable for railway wagon |
-
2009
- 2009-07-31 CN CN2009200878311U patent/CN201436223U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112428976A (en) * | 2020-12-15 | 2021-03-02 | 神华铁路装备有限责任公司 | Railway wagon brake cylinder monitoring device and system and railway wagon |
| CN113911091A (en) * | 2021-10-15 | 2022-01-11 | 眉山中车制动科技股份有限公司 | Intelligent brake execution unit suitable for railway wagon |
| CN113911091B (en) * | 2021-10-15 | 2022-10-04 | 眉山中车制动科技股份有限公司 | Intelligent brake execution unit suitable for railway wagon |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhuzhou Kemeng Vehicle Paths Co., Ltd. Assignor: Nanche Changjiang Vehicle Co Ltd|Zhuzhou Kemeng vehicle accessories limited liability company Contract record no.: 2012430000058 Denomination of utility model: Braking cylinder of braking device of railway wagon Granted publication date: 20100407 License type: Exclusive License Record date: 20120502 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100407 |
|
| CX01 | Expiry of patent term |