CN105172902A - Rear wheel splash guard supporting frame of heavy truck and machining method of rear wheel splash guard supporting frame of heavy truck - Google Patents
Rear wheel splash guard supporting frame of heavy truck and machining method of rear wheel splash guard supporting frame of heavy truck Download PDFInfo
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- CN105172902A CN105172902A CN201410240129.XA CN201410240129A CN105172902A CN 105172902 A CN105172902 A CN 105172902A CN 201410240129 A CN201410240129 A CN 201410240129A CN 105172902 A CN105172902 A CN 105172902A
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- supporting frame
- pipe
- carrier base
- tube
- support
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Abstract
The invention relates to a splash guard supporting frame of a heavy truck. The splash guard supporting frame of the heavy truck comprises a supporting frame seat and a supporting frame pipe, wherein the supporting frame pipe is connected with a step on one side of the supporting frame seat; the supporting frame seat is of a flange structure; the cylindrical step which takes the central line of the supporting frame seat as the axis and is connected with the supporting frame pipe is arranged on one side of the supporting frame seat; the supporting frame pipe is a reducer pipe, the pipe wall of one end of the reducer pipe is machined in a pressurization pore broadening mode, and according to the shape of the end, the reducer pipe is composed of a straight pipe connected with the cylindrical step of the supporting frame seat and a section of horn-shaped pipe. According to the connecting structure of the supporting frame seat and the supporting frame pipe, the supporting frame seat and the supporting frame pipe are in interference fit, and the connecting position is welded in a full-length mode. Compared with the prior art, the splash guard supporting frame of the heavy truck has the beneficial effects that 1, the length of a weld joint is increased, and the welding strength is improved; 2, the production and machining process is simple, and the production cost is low; 3, the pipe wall has no fatigue crack phenomenon.
Description
Technical field
The present invention relates to a kind of auto parts and components, is a kind of for heavy duty truck splash apron bracket specifically.
Background technology
At present, the patent No. of a kind of splash apron bracket usually adopted in domestic heavy duty truck is: ZL2012206494798, name is called: " a kind of splash apron bracket on heavy motor vehicle ".Its structure is made up of flange, shape tube and plug pin, and flange is arranged on the end outer wall of shape tube, and plug pin is arranged in the endoporus of shape tube end, and flange center hole, shape tube end and plug pin outer Side face shape are circular triangle, and three is interference fit.This product also exists following point in production and use procedure: 1, because flange center hole, shape tube end and plug pin profile are circular triangle, three connects for interference flush fit, require very high to the working accuracy of flange, shape tube and plug pin and right alignment in production, therefore production technology is more complicated, cost is higher.2, because mud guard is suspended in splash apron bracket on shape tube other end straight section, during use shape tube stress point distribution situation be from flange more close to, be subject to pulling-out force larger, the stress on tube wall is also larger; When heavy duty truck for a long time road conditions compare run under harsh conditions condition time, in special-shaped pore, the plug pin of interference fit easily occurs pulling and tears problem with tube wall.
Summary of the invention
The object of the invention is to overcome the deficiency in above-mentioned technology, provide a kind of product structure and processing technology is simple, productive costs is low, the heavy motor vehicle splash apron bracket that fatigue life is high and job operation thereof.
The technical solution used in the present invention is: a kind of heavy duty truck splash apron bracket, comprise: carrier base and support tube, support tube is connected with carrier base one Side step, and described carrier base is flange arrangement, one Side be provided with carrier base line of centers be axis, the cylindrical step that is connected with support tube; Cylindrical step top is provided with protuberance, is chamfering structure, for the assembling of carrier base and support tube interference fit.
Described support tube be by a radicle tube wall through turgor pressure reaming process after, its end shape is: by the straight tube be connected with carrier base cylinder step and one section of adapter bonnet formed in " loudspeaker " shape pipe, the straight tube internal diameter size of adapter bonnet is slightly less than carrier base cylinder step diameter dimension, and the two is interference fit.
Described carrier base and the connection structure of support tube are: cylinder step is pressed in support tube straight tube hole, and the two is interference fit, its junction full weld.
Heavy duty truck splash apron bracket job operation of the present invention comprises the following steps:
One, support tube processing
1, blanking, adopts saw to the tube blank size needed for steel pipe cutting sawing;
2, chamfering, adopts gauge lathe to carry out chamfering to pipe;
3, bend pipe, adopts pipe bending machine to carry out bend pipe to the pipe after chamfering;
4, rise mouth, carries out twice turgor pressure ream forming on a hydraulic press respectively, make bend pipe end form a converting pipe pipe portion with second mate's mouthful shaping dies that rises to bend pipe one Side circular hole.
Two, carrier base processing
Lathe is adopted to process blank material.
Three, bracket assembled
1, elastic conjunction, adopts hydraulic compressor by carrier base cylinder step press-in support tube;
2, weld, use frock clamp to carry out assembly welding to support tube, carrier base;
3, ball blast, adopts shot-blasting machine to carry out ball blast to support;
4, plastic-blasting, carries out surface treatment to support, plastic-blasting, high-temperature baking;
5, packaging warehouse-in, to support marking, packaging, packs, labels, puts process in storage.
The beneficial effect of hinge structure of the present invention is: 1, compared with original product structure, because the caliber be connected with carrier base cylinder step is comparatively larger than the caliber increase before reaming, because this increasing fusion length, improves weld strength.2, carrier base step is cylinder, support tube is pipe, and the flange endoporus of original product, shape tube connect tube wall and plug pin profile is circular triangle, and both compare, and the former is simple for production and processing technology, and the latter is complicated, thus the former reduces productive costs; 3, because one section of support tube end near carrier base place is adapter bonnet, the pipe in " loudspeaker " shape, compare former caliber increase comparatively large, thus under identical working condition, tube wall of the present invention there will not be fracture by fatigue phenomenon.
Accompanying drawing explanation
Fig. 1 is the structural representation of heavy duty truck rear guard support of the present invention.
Detailed description of the invention
Referring to accompanying drawing, 1 couple of the present invention is described in more detail.
Fig. 1 is heavy duty truck rear guard support of the present invention, comprise: carrier base 1 and support tube 2, support tube 2 is connected with carrier base one Side step 11, and described carrier base 1 is flange arrangement, one Side be provided with carrier base 1 line of centers be axis, the cylindrical step 11 that is connected with support tube 2; Cylindrical step 11 top is provided with protuberance 12, is chamfering structure, for the assembling of carrier base 1 with support tube 2 interference fit.
Described support tube 2 be by a radicle tube wall through turgor pressure reaming process after, its end shape is: by the straight tube 211 be connected with carrier base cylinder step 11 and one section of adapter bonnet 21 formed in " loudspeaker " shape pipe 212, straight tube 211 internal diameter size of adapter bonnet 21 is slightly less than the outside dimension of carrier base cylinder step 11, and the two is interference fit.
Described carrier base 1 with the connection mode of support tube 2 is: cylinder step 11 is pressed in support tube straight tube 211 hole, and the two is interference fit, its junction full weld.
Heavy duty truck splash apron bracket job operation of the present invention comprises the following steps:
One, support tube processing
1, blanking, adopts saw to the tube blank size needed for common steel tube cutting sawing;
2, chamfering, adopts gauge lathe to carry out chamfering to pipe;
3, bend pipe, adopts pipe bending machine to carry out bend pipe to the pipe after chamfering;
4, rise mouth, carries out twice turgor pressure ream forming on a hydraulic press respectively, make bend pipe end form a converting pipe pipe portion with second mate's mouthful shaping dies that rises to bend pipe one Side circular hole.
Two, carrier base processing
Lathe is adopted to process carrier base blank material.
Three, bracket assembled
1, elastic conjunction, adopts hydraulic compressor by carrier base cylinder step press-in support tube;
2, weld, use frock clamp to carry out assembly welding to support tube, carrier base, sealing;
3, ball blast, adopts shot-blasting machine to carry out ball blast to support;
4, plastic-blasting, carries out surface treatment to support, plastic-blasting, high-temperature baking;
5, packaging warehouse-in, to support marking, packaging, packs, labels, puts process in storage.
Above-mentioned two kinds of technical scheme contrast tests
The support tube diameter range of usual Automobile mudguard support is 30mm ~ 50mm, and this sentences, and heavy goods vehicles support tube diameter is 50mm, wall thickness is: 4mm is example:
If according to the patent No. be: the product that ZL2012206494798 produces, through test, when bearing maximum pulling-out force and surpassing 150KN, pulling appears in the plug pin that will occur in support pore, tube wall tears problem.If according to structure as shown in Figure 1, rear guard support taper end tube wall diameter is 50mm, wall thickness is 4mm, and butt end tube wall diameter is 75mm, wall thickness is: 3.7mm, through test, when bearing maximum pulling-out force and surpassing 260KN, problem of just splitting at taper end tube wall place.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and be not the restriction to this practical working of an invention mode, for those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or variation and are still among the protection domain that this practicality invents.
Claims (4)
1. a heavy duty truck rear guard support, comprise: carrier base (1) and support tube (2), support tube (2) is connected with carrier base one Side step (11), it is characterized in that: described carrier base (1) is flange arrangement, one Side be provided with carrier base (1) line of centers be axis, the cylindrical step (11) that is connected with support tube 2, cylindrical step top is provided with protuberance (12);
Described support tube (2) is that its end shape is by a radicle tube wall after turgor pressure reaming is processed: be the adapter bonnet (21) that " loudspeaker " shape manages that (212) form by the straight tube (211) be connected with carrier base cylinder step (11) and one section;
Described carrier base (1) with the connection mode of support tube (2) is: cylinder step (11) is pressed in straight tube (21) hole of support tube, and the two is interference fit, its junction full weld.
2. a kind of heavy duty truck splash apron bracket according to claim 1, is characterized in that: described protuberance (12) is chamfering structure.
3. a kind of heavy duty truck splash apron bracket according to claim 1, is characterized in that: straight tube (211) internal diameter size of adapter bonnet (21) is slightly less than the outside dimension of carrier base cylinder step (11), and the two is interference fit.
4. a job operation for heavy duty truck splash apron bracket, is characterized in that comprising the following steps:
One, support tube processing,
(1), blanking, adopt saw to steel pipe cutting sawing needed for tube blank size;
(2), chamfering, adopt gauge lathe Dui Guan Pei to carry out chamfering;
(3), bend pipe, adopt pipe bending machine bend pipe is carried out to Guan Pei after chamfering;
(4), rise mouth, adopt second mate rise mouthful shaping die on a hydraulic press respectively to bend pipe one Side circular hole carry out secondary turgor pressure shaping reaming processing, make bend pipe end form a converting pipe portion;
Two, carrier base processing,
Lathe is adopted to process blank material;
Three, bracket assembled,
(1), elastic conjunction, adopt hydraulic compressor by carrier base cylinder step press-in support tube in;
(2), weld, use frock clamp to carry out assembly welding to support tube, carrier base, sealing;
(3), support, adopt shot-blasting machine ball blast is carried out to support;
(4), plastic-blasting, surface treatment is carried out to support, plastic-blasting, high-temperature baking;
(5), packaging warehouse-in, to support marking, packaging, pack, label, put process in storage.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410240129.XA CN105172902B (en) | 2014-06-03 | 2014-06-03 | Heavy truck rear guard support and processing method |
| CN201710825581.6A CN107600192B (en) | 2014-06-03 | 2014-06-03 | The higher heavy truck rear guard bracket of weld strength |
| CN201710825582.0A CN107618575B (en) | 2014-06-03 | 2014-06-03 | The processing method of fatigue life high heavy truck rear guard bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410240129.XA CN105172902B (en) | 2014-06-03 | 2014-06-03 | Heavy truck rear guard support and processing method |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710825582.0A Division CN107618575B (en) | 2014-06-03 | 2014-06-03 | The processing method of fatigue life high heavy truck rear guard bracket |
| CN201710825581.6A Division CN107600192B (en) | 2014-06-03 | 2014-06-03 | The higher heavy truck rear guard bracket of weld strength |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105172902A true CN105172902A (en) | 2015-12-23 |
| CN105172902B CN105172902B (en) | 2017-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710825582.0A Active CN107618575B (en) | 2014-06-03 | 2014-06-03 | The processing method of fatigue life high heavy truck rear guard bracket |
| CN201710825581.6A Active CN107600192B (en) | 2014-06-03 | 2014-06-03 | The higher heavy truck rear guard bracket of weld strength |
| CN201410240129.XA Active CN105172902B (en) | 2014-06-03 | 2014-06-03 | Heavy truck rear guard support and processing method |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710825582.0A Active CN107618575B (en) | 2014-06-03 | 2014-06-03 | The processing method of fatigue life high heavy truck rear guard bracket |
| CN201710825581.6A Active CN107600192B (en) | 2014-06-03 | 2014-06-03 | The higher heavy truck rear guard bracket of weld strength |
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| Country | Link |
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| CN (3) | CN107618575B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588797A (en) * | 2019-10-23 | 2019-12-20 | 安徽华菱汽车有限公司 | Fender support device and machining method thereof |
| EP4311746A1 (en) * | 2022-07-25 | 2024-01-31 | Lago Accessori S.r.l. | Support for anchoring a mudguard to a vehicle |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113441599B (en) * | 2020-03-25 | 2023-02-14 | 宝山钢铁股份有限公司 | Hydraulic forming and flaring combined process and device for tubular part |
| CN113879408B (en) * | 2021-07-29 | 2023-07-21 | 东风商用车有限公司 | Lightweight fender bracket assembly and preparation method of fender support rod thereof |
| CN113753135B (en) * | 2021-09-14 | 2022-12-23 | 东风商用车有限公司 | Commercial vehicle fender bracket and manufacturing process |
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| EP1043216A1 (en) * | 1999-03-29 | 2000-10-11 | Polyrim | Fixing device for a mudguard for road or agricultural vehicle |
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| EP2193981A1 (en) * | 2008-12-01 | 2010-06-09 | Scania CV AB (publ) | Mudguard suspension strut |
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2014
- 2014-06-03 CN CN201710825582.0A patent/CN107618575B/en active Active
- 2014-06-03 CN CN201710825581.6A patent/CN107600192B/en active Active
- 2014-06-03 CN CN201410240129.XA patent/CN105172902B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1043216A1 (en) * | 1999-03-29 | 2000-10-11 | Polyrim | Fixing device for a mudguard for road or agricultural vehicle |
| CN2411378Y (en) * | 1999-12-06 | 2000-12-20 | 永定县长丰机械制造厂 | Integral supporting axle end |
| EP2193981A1 (en) * | 2008-12-01 | 2010-06-09 | Scania CV AB (publ) | Mudguard suspension strut |
| CN201971065U (en) * | 2011-03-10 | 2011-09-14 | 北汽福田汽车股份有限公司 | Mudguard for vehicle wheel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110588797A (en) * | 2019-10-23 | 2019-12-20 | 安徽华菱汽车有限公司 | Fender support device and machining method thereof |
| EP4311746A1 (en) * | 2022-07-25 | 2024-01-31 | Lago Accessori S.r.l. | Support for anchoring a mudguard to a vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107618575B (en) | 2019-05-17 |
| CN107618575A (en) | 2018-01-23 |
| CN105172902B (en) | 2017-10-17 |
| CN107600192B (en) | 2019-05-21 |
| CN107600192A (en) | 2018-01-19 |
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