Integrated mudguard support for commercial vehicle
Through integrated design and through-hole molding connection, the problems of loose, fall off and overweight fender brackets for commercial vehicles are solved, and the structural stability and cost reduction are achieved, and the safety and production efficiency of the vehicle are improved.
Patent Information
- Application Number
- CN202421012308.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The existing commercial vehicle fender brackets have problems such as looseness, shedding, breaking and excessive weight in structural design and use, resulting in high safety and production costs.
Adopting an integrated design, the bracket base and the bracket pipe are integrally formed and fixedly connected through the through holes, reducing bolts and welding, and adding sheet reinforcement ribs to form an overall structure of composite materials, avoiding loosening and breaking, and reducing thinning through steel pipe pulling and thinning. weight.
It significantly improves the structural stability of the bracket, reduces the risk of shedding and breaking, reduces weight and production costs, improves vehicle safety and fuel economy, and simplifies installation and production processes.
Smart Images
Figure CN222157612U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fender brackets, in particular to an integrated fender bracket for commercial vehicles. Background Art
[0002] Commercial vehicle fender support is an important part on the vehicle, used to support and fix the fender to prevent mud, water and other debris from splashing around the vehicle or onto other vehicles.
[0003] The current commercial vehicle fender brackets have some defects and deficiencies in design and actual use:
[0004] The first is the structure. Structurally, most commercial vehicle fender brackets are composed of two parts: one is the base for fixing on the chassis, which is mostly made of cast iron or cast steel; the other part is a long tube inserted into the base. Common connection methods of fender brackets include the following three types: one is a bolt-connected fender bracket, which is fixed only by the tightening force of the bolts. First, the force is not enough, and second, it is easy to loosen after a long time. The second is an inserted fender bracket. If it is used for a long time, the long tube is easy to fall off the base. The third is a welded fender bracket. The fender vibrates up and down for a long time, and the welding part is easy to crack. The fender will also fall off. The fallen fender or bracket may cause an accident and even endanger other subsequent vehicles. Moreover, the junction of the long tube and the base is also more susceptible to corrosion and wear, which will shorten the life of the bracket and require frequent repairs or replacements.
[0005] The second is a design flaw. The fender bracket is very easy to break. The base of the current fender bracket was originally used to insert and install a long tube, but in fact, a heavier fender is also installed on the long tube. When the car is running, the road conditions are different, and the fender drives the long tube to swing up and down at a high frequency, thus forming a force arm and moment similar to a seesaw. The fulcrum is the junction of the base and the long tube, which makes the junction of the base and the long tube very easy to break during long-term use.
[0006] The third is weight. Due to design and installation requirements, the base thickness of the current fender bracket cannot be too low, and there are reinforcing ribs, and the holes for inserting and installing long tubes cannot be too short, which causes the overall weight of the fender bracket to be too heavy.
[0007] Finally, in addition to the base and the long tube, the insert-type fender bracket must have a layer of rubber pad between the two for buffering and shock absorption, which leads to more parts and installation processes, and wastes human resources. Utility Model Content
[0008] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an integrated fender bracket for commercial vehicles, which has the effects of enhancing the stability of the bracket structure, reducing production costs, reducing the weight of the fender bracket base and improving production efficiency.
[0009] The above utility model object of the utility model is achieved through the following technical solutions:
[0010] An integrated fender bracket for a commercial vehicle comprises a bracket base and a bracket pipe, wherein one end of the bracket pipe is inserted into the bracket base and is integrally formed and fixedly connected with the bracket base.
[0011] As a further technical solution of the utility model: the support base includes a positioning portion and a connecting portion, the support tube includes a support tube connecting section and a support tube extension section, and the connecting portion and the support tube connecting section are integrally formed.
[0012] As a further technical solution of the utility model: an inner cavity groove is opened in the connecting part, the bracket tube connecting section is inserted in the inner cavity groove, a plurality of connecting holes are opened on the bracket tube connecting section, and the plurality of connecting holes are evenly arranged on the circumference of the bracket tube connecting section, and the connecting part and the bracket tube connecting section are cast and connected through the connecting holes.
[0013] As a further technical solution of the utility model: the wall thickness of the bracket tube connection section is greater than the wall thickness of the bracket tube extension section, and the wall thickness of the bracket tube gradually becomes thinner at the junction of the bracket tube connection section and the bracket tube extension section.
[0014] As a further technical solution of the utility model: a plurality of base bolt holes are provided on the positioning portion.
[0015] As a further technical solution of the present utility model: the bracket base also includes a plurality of sheet-type reinforcing ribs, the bottom of the sheet-type reinforcing ribs is connected to the positioning portion, and one side of the sheet-type reinforcing ribs is connected to the connecting portion.
[0016] As a further technical solution of the utility model: the sheet-type reinforcing ribs are arranged in four numbers, and the four sheet-type reinforcing ribs are evenly distributed on the circumference of the connecting portion.
[0017] In summary, the present invention includes at least one of the following beneficial technical effects:
[0018] 1. The commercial vehicle fender bracket of this utility model is made of composite material and forms an integral whole. It does not require later installation, bolt connection or welding, which fundamentally solves the shortcomings of the original fender bracket that is easy to fall off and easy to break at the joint. Unless the fender bracket is damaged, the fender will not fall off during driving. Through the integrated design, the base of the commercial vehicle fender bracket and the bracket tube form an integral structure without the need for bolt connection, plug-in connection or welding. This design significantly enhances the structural stability of the bracket and effectively prevents falling off and breaking due to vibration or external force during use. Therefore, the utility model greatly improves the safety of commercial vehicles during driving and reduces the risk of traffic accidents caused by failure of the fender bracket.
[0019] 2. The fender bracket designed by the utility model does not need to consider the installation and falling off of the base part and the steel pipe part, reduces the bolt connection part, shortens the height of the plug-in base, and reduces the extra part for welding. Thus, the weight of the fender bracket is reduced. Moreover, the weight of the fender bracket is greatly reduced by drawing and thinning the steel pipe. Lightweighting not only helps to improve the fuel economy of the vehicle, but also reduces the use of raw materials, thereby reducing production costs. In addition, the integrated design simplifies the installation process, reduces the number of parts, and further saves manufacturing costs and maintenance costs.
[0020] 3. The fender bracket designed by the utility model can form assembly line production, which can improve production efficiency. Through reasonable process design, such as optimization of sand box molding, molten iron casting and cooling heat treatment, the feasibility of the process and the durability of the product are ensured, which provides strong support for the large-scale production of fender brackets for commercial vehicles. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a front view of the utility model;
[0022] Figure 2 It is a cross-sectional view of the utility model;
[0023] Figure 3 It is a top view of the base portion of the support of the utility model;
[0024] Figure 4 It is a cross-sectional view of the base portion of the support of the utility model;
[0025] Figure 5 It is a side view of the base portion of the support of the utility model;
[0026] Figure 6 It is a schematic diagram of the support tube part of the utility model;
[0027] Figure 7 The utility model Figure 2 A partial enlarged schematic diagram of part A;
[0028] Figure 8 It is a longitudinal section schematic diagram of the bracket casting model of the utility model;
[0029] Figure numerals: 1. bracket base; 11. sheet reinforcement rib; 12. positioning portion; 121 base bolt hole; 13. connecting portion; 131. inner cavity groove; 2. bracket tube; 21. bracket tube connecting section; 211. connecting hole; 22. bracket tube extension section; 23. junction; 31. casting sand mold; 32. casting sand core; 33. sand box parting line. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.
[0031] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0033] Reference Figure 1 The utility model discloses an integrated fender bracket for commercial vehicles, comprising a bracket base 1 and a bracket tube 2, one end of the bracket tube 2 is inserted into the bracket base 1 and is integrally formed and fixedly connected with the bracket base 1.
[0034] The utility model of the commercial vehicle fender bracket combines the two parts in the original design into a whole, and does not require subsequent installation, bolt connection or welding, which fundamentally solves the shortcomings of the original fender bracket that is easy to fall off and break at the joint.
[0035] Reference Figure 1 and Figure 2 The support base 1 includes a positioning portion 12 and a connecting portion 13, the support tube 2 includes a support tube connecting section 21 and a support tube extension section 22, and the connecting portion 13 and the support tube connecting section 21 are integrally formed.
[0036] The one-piece design of the connection part 13 and the bracket tube connecting section 21 significantly enhances the stability of the structure and eliminates possible connection weaknesses, such as welding points or bolted connections, which are usually potential risk points for breakage or loosening. In addition, the one-piece design simplifies the production process and eliminates the need for additional connection or assembly steps, which not only reduces production time but also reduces manufacturing costs because the required materials, labor and time resources are reduced. By integrating the hollow design inside the connection part and the precise design of the one-piece molding of the connection part 13 and the bracket tube connecting section 21, the distribution and use of materials can be optimized while maintaining the structural strength, thereby achieving overall weight reduction, which helps to improve the fuel efficiency and operating performance of the vehicle.
[0037] Moreover, since there are no additional connection points, the structure is more resistant to vibration and impact, so it has a longer life and higher reliability during use, reducing possible failure points, thereby reducing the complexity of maintenance and repair, reducing vehicle downtime and maintenance costs.
[0038] Reference Figure 2 and Figure 4 An inner cavity groove 131 is opened in the connecting part 13, and the bracket tube connecting section 21 is inserted into the inner cavity groove 131. A plurality of connecting holes 211 are opened on the bracket tube connecting section 21. The plurality of connecting holes 211 are evenly arranged on the peripheral side of the bracket tube connecting section 21. The connecting part 13 and the bracket tube connecting section 21 are cast and connected through the connecting holes 211.
[0039] Reference Figure 6 Preferably, the connecting hole is set to be circular, and there are 4 connecting holes on one side of the bracket pipe connecting section 21, and two sides are set in total to ensure that molten iron or other metals or other suitable casting materials flow in, so as to firmly connect the connecting part 13 and the bracket pipe connecting section 21 together. Setting the connecting hole to be circular is not only easy to process, but also helps the casting material to flow evenly, ensuring the uniformity and strength of the connection. There are 4 connecting holes evenly distributed on one side of the bracket pipe connecting section 21, ensuring that the connection between the connecting part 13 and the bracket pipe connecting section 21 is both uniform and firm. Such a design has two sides in total, which further enhances the stability and reliability of the connection.
[0040] Reference Figure 7 The wall thickness of the stent tube connecting section 21 is greater than the wall thickness of the stent tube drawing section 22 , and the wall thickness of the stent tube 2 gradually becomes thinner at the junction 23 of the stent tube connecting section 21 and the stent tube drawing section 22 .
[0041] The overall thickness of the bracket tube 2 can be 1-5mm, among which the bracket tube connecting section 21 is thicker for bearing weight and maintaining rigidity. The tube wall thickness of the bracket tube 2 gradually becomes thinner at the junction 23 of the bracket tube connecting section 21 and the bracket tube extension section 22. The thickness is adjusted according to the required load-bearing weight. On the one hand, it is more in line with the actual situation of material stress, and on the other hand, the overall weight can be greatly reduced.
[0042] Reference Figure 3 The positioning portion 12 is provided with a plurality of base bolt holes 121 .
[0043] Preferably, there are four base bolt holes, which are alternately distributed with the sheet-type reinforcement ribs 11 to mount and fix the fender bracket to the vehicle frame.
[0044] Reference Figure 2 and Figure 5 The bracket base 1 also includes a plurality of sheet-type reinforcing ribs 11 , the bottom of the sheet-type reinforcing ribs 11 is connected to the positioning portion 12 , and one side of the sheet-type reinforcing ribs 11 is connected to the connecting portion 13 .
[0045] Preferably, four sheet-type reinforcing ribs 11 are provided, and the four sheet-type reinforcing ribs 11 are evenly distributed on the circumference of the connecting portion 13 .
[0046] By adding the sheet-type reinforcement ribs 11, the structural strength of the bracket base 1 is significantly improved. The design of the sheet-type reinforcement ribs 11 can effectively disperse and withstand external forces, so that the entire bracket base can maintain higher stability when subjected to impact or load.
[0047] The four sheet-type reinforcing ribs 11 are evenly distributed around the connecting portion 13, which helps to more evenly distribute the load to various parts of the bracket base, avoid stress concentration, and thus improve the bearing capacity and durability of the overall structure.
[0048] Moreover, the design of the sheet-type reinforcement ribs 11 can significantly improve the strength of the structure without significantly increasing the overall weight, thereby optimizing the weight-to-strength ratio, making the bracket base 1 both light and strong. At the same time, the design of the sheet-type reinforcement ribs 11 allows for flexible adjustment according to specific application requirements and space limitations without affecting the overall structural strength, which increases the flexibility and adaptability of the design.
[0049] Reference Figure 8The utility model relates to a method for preparing an integrated fender bracket for a commercial vehicle, comprising the following steps:
[0050] S1, heating one end of the tubular material and drawing the end with a drawing machine to form a drawn long section 22 of the stent tube;
[0051] S2, opening a connecting hole 211 at the other end of the tubular material to form a stent tube connecting section 21;
[0052] S3, making a casting sand mold 31 and a casting sand core 32 of the bracket base 1 in a sand box, inserting the bracket pipe connecting section 21 into the casting sand mold 31, and separating the casting sand mold 31 and the casting sand core 32, and the left and right parts of the casting sand mold 31, the casting sand core 32 and the bracket pipe connecting section 21 are symmetrical about the sand box parting line 33;
[0053] S4, pouring molten iron or other metal solution into the support base 1, the molten iron enters the casting sand mold 31 of the support base 1 from the connecting hole 211, and fills the inner and outer sides of the tube wall of the support tube connecting section 21, so that the support tube 2 is integrally embedded in the interior of the support base 1;
[0054] S5, after the bracket base 1 is completely cooled, it is taken out of the box to manufacture an integrated fender bracket for commercial vehicles;
[0055] In the preparation process described in this article of the integrated fender bracket for commercial vehicles of the utility model, the bracket tube 2 can be a steel pipe or other materials suitable for processing and forming, including spring steel, pipeline steel, 40CrMo steel, aluminum alloy, etc.
[0056] Preferably, the tubular material is an alloy steel pipe, and the tensile strength of the alloy steel pipe is greater than 1100 MPa.
[0057] This step is a cooling and heat treatment step. Since the bracket tube 2 made of alloy steel has good thermal conductivity, the temperature of the bracket tube 2 will also increase during the fourth step of casting. The cooling process is equivalent to a heat treatment, which can greatly eliminate the stress generated during the first step of drawing.
[0058] The base 1 is made of materials suitable for processing and forming of the present invention, including ductile iron QT400-18 / QT500-7, etc., including cast steel, gray iron, cast aluminum alloy, etc.
[0059] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. An integrated fender bracket for commercial vehicles, It is characterized in that It comprises a support base (1) and a support tube (2), wherein one end of the support tube (2) is inserted into the support base (1) and is integrally formed and fixedly connected with the support base (1); The support base (1) comprises a positioning portion (12) and a connecting portion (13); the support tube (2) comprises a support tube connecting section (21) and a support tube extension section (22); the connecting portion (13) and the support tube connecting section (21) are integrally formed.
2. The integrated fender bracket for commercial vehicles according to claim 1, It is characterized in that An inner cavity groove (131) is provided in the connecting portion (13), the bracket tube connecting section (21) is inserted into the inner cavity groove (131), a plurality of connecting holes (211) are provided on the bracket tube connecting section (21), the plurality of connecting holes (211) are evenly arranged around the bracket tube connecting section (21), and the connecting portion (13) and the bracket tube connecting section (21) are connected by casting via the connecting holes (211).
3. The integrated fender bracket for commercial vehicles according to claim 1, It is characterized in that The wall thickness of the stent tube connecting section (21) is greater than the wall thickness of the stent tube extended section (22), and the wall thickness of the stent tube (2) gradually becomes thinner at the junction (23) between the stent tube connecting section (21) and the stent tube extended section (22).
4. The integrated fender bracket for commercial vehicles according to claim 1, It is characterized in that The positioning portion (12) is provided with a plurality of base bolt holes (121).
5. The integrated fender bracket for commercial vehicles according to claim 1, It is characterized in that The support base (1) further comprises a plurality of sheet-type reinforcing ribs (11), the bottom of each sheet-type reinforcing rib (11) being connected to the positioning portion (12), and one side of each sheet-type reinforcing rib (11) being connected to the connecting portion (13).
6. The integrated fender bracket for commercial vehicles according to claim 5, It is characterized in that The number of the sheet-type reinforcing ribs (11) is four, and the four sheet-type reinforcing ribs (11) are evenly distributed around the circumference of the connecting portion (13).