CN103303296A - Novel trailer control valve - Google Patents
Novel trailer control valve Download PDFInfo
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- CN103303296A CN103303296A CN2013101998913A CN201310199891A CN103303296A CN 103303296 A CN103303296 A CN 103303296A CN 2013101998913 A CN2013101998913 A CN 2013101998913A CN 201310199891 A CN201310199891 A CN 201310199891A CN 103303296 A CN103303296 A CN 103303296A
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- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000002146 bilateral effect Effects 0.000 claims description 67
- 210000004907 gland Anatomy 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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Abstract
The invention provides a novel trailer control valve which comprises a valve body and a valve deck mounted on the lower side of the valve body, wherein an air inlet port and an air outlet port are formed in the two opposite sides of the upper part of the valve body; an air inlet/outlet is formed in one side of the lower part of the valve body; an opening connected with an air outlet mechanism is formed in the middle upper part of the other side of the valve body opposite to the side of the lower part of the valve body; the air outlet mechanism is three groups of bi-pass check valves assembled in sequence; the openings in the two opposite sides of each bi-pass check valve are air inlets, an air outlet is formed in the side wall of each bi-pass check valve, and a seal ball capable of blocking the air inlets is further movably arranged inside each bi-pass check valve; a passage capable of being communicated with the air inlet port, the air outlet port and the air outlet mechanism is arranged inside the valve body; and an adjusting mechanism capable of adjusting the trend of the airflow inside the valve body is movably arranged inside the passage. Compared with the prior art, the novel trailer control valve has large ventilation flow, no retardation and few faults, the manufacturing cost is low, the reliability and the durability are greatly improved, and the popularization is facilitated.
Description
Technical field
The present invention relates to a kind of automobile brake technical field, specifically a kind of novel trailer control valve simple in structure, easy to use.
Background technology
Along with China's express highway backbone network basically forms, large-tonnage, goods carrying vehicle and major axis with obvious ton-kilomiter cost advantage also increase year by year apart from superimposed trailer, trailer.Because the wheelbase of above-mentioned vehicle increases, brake piping also lengthens accordingly, and apart from vehicle, reflection time lag, the braking force deficiency of air braking system remain subject matter to the major axis of running at high speed.And existing dual circuit trailer braking valve trailer braking protection valve time lag when having heavy duty, braking is felt like jelly, can not satisfy major axis apart from the required braking force of vehicle when point braking or semi-brake, exist trailer to clash into main car phenomenon during braking, add the zero load of large trailer emergency relay valve, the serious phenomenon of tire occurs dragging, wear on tyres is serious, cause braking effect not good simultaneously, occur traffic accident when especially bad weather, road conditions are not good easily.
The novel trailer control valve ubiquity of widespread use at present the manufacturing process complexity, and fault is many, and sensitivity is low, easily freeze cold season, easily retardance, and the easy corrosion of piston causes retardance, make braking retardation during operation, perhaps return not perhaps leaks air, hand brakingly be difficult to unclamp etc. not enough, above-mentioned drawback is perplexing navigating mate, even think the Wei Baike product of more advanced import, the sensitivity that is using, ventilation flow rate is on reliability and the durability, still unsatisfactory.
Summary of the invention
Technical assignment of the present invention is to solve the deficiencies in the prior art, and a kind of trailer control valve simple in structure, novel is provided.
Technical scheme of the present invention realizes in the following manner, a kind of novel trailer control valve, comprise valve body, be installed in the valve gap of valve body downside, relative both sides, described valve body top offer intake interface and the interface of giving vent to anger, one side of valve body middle and lower part offers air inlet/outlet, corresponding with this valve body side, the middle and upper part of valve body opposite side offers the opening that connects air-out mechanism, described air-out mechanism refers to three groups of bilateral check valves of order assembling, described bilateral check valve refers to that the opening of these relative both sides of valve is admission port, air extractor duct then is arranged on the sidewall, also be movably set with the ball sealer that admission port can be stopped up in bilateral check valve inside, this valve inner offers and can be communicated with intake interface, the interface of giving vent to anger, the passage of air inlet/outlet and air-out mechanism is movably set with the regulating mechanism that adjustable valve body internal gas flow moves towards in this passage.In this technical scheme, valve inner forms a passage that extends in all direction, can finish the trend of each air-flow in this passage by regulating mechanism, one side of valve body is connected with three groups of bilateral check valves, only establish an exhausr port, guaranteed the unitarity of exhaust, each interface of offering can be used for connecting the different stop mechanism of trailer simultaneously, and braking effect is good.
As preferably, described regulating mechanism comprise the gland that is fixed on valve body upper end, by elastic component and gland elasticity be connected and can seal this passage air-intake valve plate, be arranged under the valve block in the wing passage and the valve rod of inner hollow, socket are installed in the diaphragm assembly of valve rod downside, be movably set with elastic component between described diaphragm assembly and the valve gap, the two ends up and down of valve rod all offer the deflation hole that is communicated with stem cavity.In this technical scheme, adopt the diaphragm assembly gas through it can be carried out simple filtration, guarantee the clean-up performance of gas, the diaphragm assembly structure generally adopts rubber to make simultaneously, and it is cheap to be easy to replacement and alternative costs; Valve rod then can use flexibly, regulates relation between air-intake valve plate and the passage by gas flow, makes its unlatching or closes.
As preferably, be provided with packing ring with the contacted position of diaphragm assembly on the described valve interior wall.The setting of this packing ring is in order to play buffer action, further to prolong the service life of diaphragm assembly.
As preferably, the elastic component between the elastic component between described gland and the air-intake valve plate, diaphragm assembly and the valve gap is compression spring or metal spring sheet.This general elastic component is selected the compression spring for use, and this is because the compression spring structure is simple, and easy installation and removal is easy to valve inner and safeguards.
As preferably, be provided with sealing member in the passage in the described valve body between air inlet/outlet and the air-out mechanism, the seal is socketed on the valve rod and it is by circlip and valve interior wall relative fixed.This technical scheme then is used for the limiting channel inner chamber, convenient valve rod control air-intake valve plate.
As preferably, described three groups of bilateral check valves are assembled in proper order and referred to: an admission port of first group of bilateral check valve connects valve body, an admission port of second group of bilateral check valve connects first group air extractor duct, an admission port of the 3rd group of bilateral check valve connects second group air extractor duct, and the air extractor duct of another admission port of these three groups of bilateral check valves, the 3rd group of bilateral check valve is connected with inlet suction port one, inlet suction port two, inlet suction port three, air outlet adapter respectively.Adopt the structure of this technical scheme, can make three groups of bilateral check valves all discharge from the exhaust ports of the 3rd group of bilateral check valve, improve the sensitieness of The whole control valve greatly, prevent that retardance from taking place.
As preferably, the junction of the junction of the junction of the junction of the junction between described first group of bilateral check valve and the valve body, first group of two-way one-way valve and the junction of inlet suction port one, second group of bilateral check valve and first group of bilateral check valve, second group of bilateral check valve and the junction of inlet suction port two, the 3rd group of bilateral check valve and second group of bilateral check valve, the 3rd group of bilateral check valve and inlet suction port three, the 3rd group of bilateral check valve and air outlet adapter is provided with seal ring.
Further, described intake interface connects the air supply opening of emergency relay valve, and the interface of giving vent to anger connects air receiver; The air inlet/outlet that is arranged on valve body one side connects the stopping brake lock control cock of trailer; Inlet suction port one auxiliary connection parking brake, inlet suction port two connect the first braking chamber of master brake cylinder, and inlet suction port three connects the second braking chamber of master brake cylinder.
The beneficial effect that the present invention compared with prior art produces is:
Characteristics such as that a kind of novel trailer control valve of the present invention has is simple in structure, volume is small and exquisite, be skillfully constructed, sensitivity height, the ventilation flow rate of this trailer valve is big, do not block, fault is few, cheap for manufacturing cost, reliability and durability improve greatly, minor structure is compacter, is difficult for cold season freezing, and does not have corrosion to cause retardance, easy maintenance, by each bilateral check valve is made up mutually, the control cock after the combination can be one with each detent diversity of trailer, and braking is convenient, use more flexibly, can be widely used in automotive fields such as trailer, superimposed trailer.
Description of drawings
Accompanying drawing 1 is structural representation of the present invention.
Accompanying drawing 2 be among Fig. 1 A to cross-sectional scheme drawing.
Mark in the accompanying drawing is represented respectively:
1, valve body, 2, gland, 3, intake interface, 4, the valve block spring, 5, air-intake valve plate, 6, valve rod, 7, sealing member, 8, air inlet/outlet, 9, diaphragm assembly, 10, deflation hole, 11, the compression spring, 12, valve gap, 13, packing ring, 14, circlip, 15, the interface of giving vent to anger, 16, inlet suction port one, 17, ball sealer, 18, inlet suction port three, 19, air outlet adapter, 20, inlet suction port two, 21, bilateral check valve, 22, seal ring.
The specific embodiment
Below in conjunction with accompanying drawing a kind of novel trailer control valve of the present invention is done following detailed description the in detail.
As accompanying drawing 1, shown in Figure 2, this a kind of novel trailer control valve, comprise valve body 1, be installed in the valve gap 12 of valve body 1 downside, relative both sides, described valve body 1 top offer intake interface 3 and the interface 15 of giving vent to anger, one side of valve body 1 middle and lower part offers air inlet/outlet 8, corresponding with this valve body 1 side, the middle and upper part of valve body 1 opposite side offers the opening that connects air-out mechanism, described air-out mechanism refers to three groups of bilateral check valves 21 of order assembling, described bilateral check valve 21 refers to that the opening of these relative both sides of valve is admission port, air extractor duct then is arranged on the sidewall, also be movably set with the ball sealer 17 that admission port can be stopped up in bilateral check valve 21 inside, that is to say, the diameter of ball sealer 17 is far longer than the bore that admission port is offered, this valve body 1 inside offers and can be communicated with intake interface 3, the interface 15 of giving vent to anger, the passage of air inlet/outlet 8 and air-out mechanism is movably set with the regulating mechanism that adjustable valve body 1 internal gas flow moves towards in this passage.
Described regulating mechanism comprise the gland 2 that is fixed on valve body 1 upper end, by valve block spring 4 and gland 2 elasticity be connected and can seal this passage air-intake valve plate 5, be arranged under the valve block in the wing passage and valve rod 6, the socket of inner hollow are installed in the diaphragm assembly 9 of valve rod 6 downsides, be movably set with compression spring 11 between described diaphragm assembly 9 and the valve gap 12, the two ends up and down of valve rod 6 all offer the deflation hole 10 that is communicated with valve rod 6 inner chambers.
Be provided with packing ring 13 with diaphragm assembly 9 contacted positions on described valve body 1 inwall.
Be provided with sealing member 7 in the passage in the described valve body 1 between air inlet/outlet 8 and the air-out mechanism, the seal 7 is socketed on the valve rod 6 and it is by circlip 14 and valve body 1 inwall relative fixed.
Described three groups of bilateral check valves, 21 order assemblings refer to: an admission port of first group of bilateral check valve 21 connects valve body 1, an admission port of second group of bilateral check valve 21 connects first group air extractor duct, an admission port of the 3rd group of bilateral check valve 21 connects second group air extractor duct, and the air extractor duct of another admission port of these three groups of bilateral check valves 21, the 3rd group of bilateral check valve 21 is connected with inlet suction port 1, inlet suction port 2 20, inlet suction port 3 18, air outlet adapter 19 respectively.
Like this, when inlet suction port one 16 air feed of first group of bilateral check valve 21, the admission port that ball sealer 17 moves its opposite side stops up, and gas enters second group of bilateral check valve 21; When inlet suction port 2 20 air feed of second group of bilateral check valve 21, ball sealer 17 moves the admission port that will be connected with first group of bilateral check valve 21 exhausr port and stops up, and gas enters the 3rd group of bilateral check valve 21; When inlet suction port 3 18 air feed of the 3rd group of bilateral check valve 21, ball sealer 17 moves the admission port that will be connected with second group of bilateral check valve 21 exhausr port and stops up, and last gas is discharged from air outlet adapter 19.
Junction between described first group of bilateral check valve 21 and the valve body 1, the junction of first group of bilateral check valve 21 and inlet suction port 1, the junction of second group of bilateral check valve 21 and first group of bilateral check valve 21, the junction of second group of bilateral check valve 21 and inlet suction port 2 20, the junction of the 3rd group of bilateral check valve 21 and second group of bilateral check valve 21, the junction of the 3rd group of bilateral check valve 21 and inlet suction port 3 18, the 3rd group of bilateral check valve 21 is provided with seal ring 22 with the junction of air outlet adapter 19.
Described intake interface 3 connects the air supply opening of emergency relay valve, and the interface 15 of giving vent to anger connects air receiver; The air inlet/outlet 8 that is arranged on valve body 1 one sides connects the stopping brake lock control cock of trailer; Inlet suction port one 16 auxiliary connection parking brakes, inlet suction port 2 20 connect the first braking chamber of master brake cylinder, and inlet suction port 3 18 connects the second braking chamber of master brake cylinder.
When hand braking control cock air feed, air pressure promotes diaphragm assembly 9 and moves, overcome the pressure of compression spring 11, drive valve rod 6, air-intake valve plate 5 is closed, and valve body 1 opposite side discharged with the gas in the venting channels that bilateral check valve 21 is connected, remove hand braking, during not to air inlet/outlet 8 air feed, compression spring 11 promotes diaphragm assembly 9 and valve rod 6 is opened air-intake valve plate 5, make the gas of intake interface 3 flow to the air outlet adapter of giving vent to anger by three groups of bilateral check valves 21, supply with trailer, emergency brake valve control pore.
General, need offer deflation hole 10 at valve gap 12, in addition, diaphragm assembly 9 integrated being fixed on two compressing tablets, two compressing tablets are socketed in valve rod 6 outsides, at contact site general all the arrange pad that can play buffer action of compressing tablet with valve gap 12, valve body 1 inwall.
In the above-described embodiments, preferred forms of the present invention is described, obviously, under inventive concept of the present invention, still can make a lot of variations, such as making the diaphragm assembly into the rubber piston structure, ball sealer makes sealing block etc. into also can make a lot of variations, remodeling, interpolation or replacement in essential scope of the present invention.At this, should illustrate that any change of making all will fall within the scope of protection of the present invention under inventive concept of the present invention.
Claims (8)
1. novel trailer control valve, it is characterized in that: comprise valve body, be installed in the valve gap of valve body downside, relative both sides, described valve body top offer intake interface and the interface of giving vent to anger, one side of valve body middle and lower part offers air inlet/outlet, corresponding with this valve body side, the middle and upper part of valve body opposite side offers the opening that connects air-out mechanism, described air-out mechanism refers to three groups of bilateral check valves of order assembling, described bilateral check valve refers to that the opening of these relative both sides of valve is admission port, air extractor duct then is arranged on the sidewall, also be movably set with the ball sealer that admission port can be stopped up in bilateral check valve inside, this valve inner offers and can be communicated with intake interface, the interface of giving vent to anger, the passage of air inlet/outlet and air-out mechanism is movably set with the regulating mechanism that adjustable valve body internal gas flow moves towards in this passage.
2. a kind of novel trailer control valve according to claim 1, it is characterized in that: described regulating mechanism comprise the gland that is fixed on valve body upper end, by elastic component and gland elasticity be connected and can seal this passage air-intake valve plate, be arranged under the valve block in the wing passage and the valve rod of inner hollow, socket are installed in the diaphragm assembly of valve rod downside, be movably set with elastic component between described diaphragm assembly and the valve gap, the two ends up and down of valve rod all offer the deflation hole that is communicated with stem cavity.
3. a kind of novel trailer control valve according to claim 2 is characterized in that: be provided with packing ring with the contacted position of diaphragm assembly on the described valve interior wall.
4. a kind of novel trailer control valve according to claim 2 is characterized in that: the elastic component between the elastic component between described gland and the air-intake valve plate, diaphragm assembly and the valve gap is compression spring or metal spring sheet.
5. according to arbitrary described a kind of novel trailer control valve in the claim 2, it is characterized in that: be provided with sealing member in the passage in the described valve body between air inlet/outlet and the air-out mechanism, the seal is socketed on the valve rod and it is by circlip and valve interior wall relative fixed.
6. a kind of novel trailer control valve according to claim 1, it is characterized in that: described three groups of bilateral check valves are assembled in proper order and referred to: an admission port of first group of bilateral check valve connects valve body, an admission port of second group of bilateral check valve connects first group air extractor duct, an admission port of the 3rd group of bilateral check valve connects second group air extractor duct, and the air extractor duct of another admission port of these three groups of bilateral check valves, the 3rd group of bilateral check valve is connected with inlet suction port one, inlet suction port two, inlet suction port three, air outlet adapter respectively.
7. a kind of novel trailer control valve according to claim 6 is characterized in that: the junction of the junction of the junction of the junction of the junction between described first group of bilateral check valve and the valve body, first group of bilateral check valve and the junction of inlet suction port one, second group of bilateral check valve and first group of bilateral check valve, second group of bilateral check valve and the junction of inlet suction port two, the 3rd group of bilateral check valve and second group of bilateral check valve, the 3rd group of bilateral check valve and inlet suction port three, the 3rd group of bilateral check valve and air outlet adapter is provided with seal ring.
8. according to claim 6 or 7 described a kind of novel trailer control valves, it is characterized in that: described intake interface connects the air supply opening of emergency relay valve, and the interface of giving vent to anger connects air receiver; The air inlet/outlet that is arranged on valve body one side connects the stopping brake lock control cock of trailer; Inlet suction port one auxiliary connection parking brake, inlet suction port two connect the first braking chamber of master brake cylinder, and inlet suction port three connects the second braking chamber of master brake cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310199891.3A CN103303296B (en) | 2013-05-27 | 2013-05-27 | Novel trailer control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310199891.3A CN103303296B (en) | 2013-05-27 | 2013-05-27 | Novel trailer control valve |
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| Publication Number | Publication Date |
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| CN103303296A true CN103303296A (en) | 2013-09-18 |
| CN103303296B CN103303296B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310199891.3A Expired - Fee Related CN103303296B (en) | 2013-05-27 | 2013-05-27 | Novel trailer control valve |
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| Country | Link |
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| CN (1) | CN103303296B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105035065A (en) * | 2015-08-13 | 2015-11-11 | 山东康健汽车配件有限公司 | Throttling stepless variable pressure trailer control valve |
| CN105599741A (en) * | 2015-12-22 | 2016-05-25 | 芜湖恒坤汽车部件有限公司 | Brake master cylinder |
| CN110803150A (en) * | 2019-11-27 | 2020-02-18 | 东风商用车有限公司 | Lightweight integrated trailer valve bracket assembly |
| EP3822522B1 (en) * | 2019-11-12 | 2024-09-04 | ZF CV Systems Europe BV | A trailer control valve for a vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58167249A (en) * | 1982-03-19 | 1983-10-03 | ヴアブコ・フア−ルツオイクブレムゼン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Control valve for braking pressure |
| CN1074183A (en) * | 1992-01-09 | 1993-07-14 | 张军 | The brake system of truck of band trailer |
| US5340203A (en) * | 1993-06-11 | 1994-08-23 | Westinghouse Air Brake Company | Variable load control valve with dual diaphragms reinforced by washers and spacer members |
| US5524662A (en) * | 1990-01-25 | 1996-06-11 | G.T. Products, Inc. | Fuel tank vent system and diaphragm valve for such system |
| DE102009053814A1 (en) * | 2009-11-18 | 2011-05-19 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Multi-stage switchable pilot operated valve arrangement |
| CN102089558A (en) * | 2008-07-11 | 2011-06-08 | 科万股份公司 | Pressure controlled three way valve device |
| CN202703571U (en) * | 2012-06-07 | 2013-01-30 | 郭绪辉 | Automatic brake valve for automobile braking |
| CN203246461U (en) * | 2013-05-27 | 2013-10-23 | 梁山康健汽车配件有限公司 | Novel trailer control valve |
-
2013
- 2013-05-27 CN CN201310199891.3A patent/CN103303296B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58167249A (en) * | 1982-03-19 | 1983-10-03 | ヴアブコ・フア−ルツオイクブレムゼン・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Control valve for braking pressure |
| US5524662A (en) * | 1990-01-25 | 1996-06-11 | G.T. Products, Inc. | Fuel tank vent system and diaphragm valve for such system |
| CN1074183A (en) * | 1992-01-09 | 1993-07-14 | 张军 | The brake system of truck of band trailer |
| US5340203A (en) * | 1993-06-11 | 1994-08-23 | Westinghouse Air Brake Company | Variable load control valve with dual diaphragms reinforced by washers and spacer members |
| CN102089558A (en) * | 2008-07-11 | 2011-06-08 | 科万股份公司 | Pressure controlled three way valve device |
| DE102009053814A1 (en) * | 2009-11-18 | 2011-05-19 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Multi-stage switchable pilot operated valve arrangement |
| CN202703571U (en) * | 2012-06-07 | 2013-01-30 | 郭绪辉 | Automatic brake valve for automobile braking |
| CN203246461U (en) * | 2013-05-27 | 2013-10-23 | 梁山康健汽车配件有限公司 | Novel trailer control valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105035065A (en) * | 2015-08-13 | 2015-11-11 | 山东康健汽车配件有限公司 | Throttling stepless variable pressure trailer control valve |
| CN105035065B (en) * | 2015-08-13 | 2018-08-10 | 山东康健汽车配件有限公司 | A kind of throttling stepless voltage transformation trailer control valve |
| CN105599741A (en) * | 2015-12-22 | 2016-05-25 | 芜湖恒坤汽车部件有限公司 | Brake master cylinder |
| EP3822522B1 (en) * | 2019-11-12 | 2024-09-04 | ZF CV Systems Europe BV | A trailer control valve for a vehicle |
| CN110803150A (en) * | 2019-11-27 | 2020-02-18 | 东风商用车有限公司 | Lightweight integrated trailer valve bracket assembly |
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| Publication number | Publication date |
|---|---|
| CN103303296B (en) | 2015-07-01 |
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Address after: 272613 Shandong city of Jining province Liangshan County boxing Town Industrial Park Huayu Road No. 8 Applicant after: The healthy Car assessories Co., Ltd in Shandong Address before: 272613, No. four, No. three, boxing Town, Liangshan County, Jining, Shandong Applicant before: Liangshan Kangjian Automotive Parts Co., Ltd. |
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