Chassis suspension reinforcement device for a dump semi-trailer

Abstract

The utility model discloses a chassis suspension outer reinforcing device of self -discharging semitrailer relates to suspension structure reinforcing technical field, including chassis girder, be equipped with chassis girder bottom's several suspension bodies: the reinforcing device includes two reinforcing mainboards of symmetrical distribution of several groups, and the connecting piece of every reinforcing mainboard plug -in assembly, the connecting piece includes the triangular support spare of upper and lower distribution, triangular extension spare, wherein, triangular support spare, triangular extension spare all with reinforcing mainboard are cross -wise cross -distribution, and bolt assembly, the utility model discloses through the triangular mechanics principle and modularization integrated design, will strength, rigidity, stability and durability perfectly combine, comprehensively promote chassis suspension's bearing capacity, structural stability, installation convenience and service life.

Description

Technical Field

[0001] This utility model relates to the field of suspension structure reinforcement technology, specifically to an external reinforcement device for the chassis suspension of a dump semi-trailer. Background Technology

[0002] Currently, over 80% of the chassis of ordinary dump semi-trailers in China use leaf spring balance suspension. Leaf spring suspension is the common type of steel leaf spring, but it has the following disadvantages in chassis suspension operation; First, when a dump truck is lifted to unload, the weight of the entire cargo box (especially when the center of gravity is at the rear) will form a huge lever torque through the lifting point (such as the front top cylinder base) and the suspension system, causing the chassis beam and suspension mounting points to bear extremely concentrated stress. Over a long period of time and repeated action, microcracks are very likely to be generated at these stress concentration points and gradually expand, leading to cracks in the beam or suspension support. Secondly, when a vehicle is driven on a bumpy road under heavy load, the suspension system is constantly in a state of high-frequency compression and rebound. This alternating load will accelerate the fatigue of metal materials, and the connection between the suspension and the frame is a high-incidence area of ​​fatigue damage. Therefore, an external reinforcement device for the chassis suspension of a dump semi-trailer is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide an external reinforcement device for the chassis suspension of a dump semi-trailer. This device, through the principle of triangular mechanics and modular integrated design, perfectly combines strength, stiffness, stability and durability, comprehensively improving the load-bearing capacity, structural stability, installation convenience and service life of the chassis suspension.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an external reinforcement device for the chassis suspension of a dump semi-trailer, wherein the chassis suspension frame includes a chassis beam and several suspension bodies disposed at the bottom of the chassis beam; the chassis suspension includes a chassis beam and several suspension bodies disposed at the bottom of the chassis beam; the reinforcement device includes several sets of two symmetrically distributed reinforcing main plates and connecting parts that are plugged into and assembled with each reinforcing main plate; the connecting parts include upper and lower distributed triangular supports and triangular extensions, wherein the triangular supports and triangular extensions are arranged in a cross shape with the reinforcing main plates, and the triangular supports can increase the connection assembly between the reinforcing main plates and the chassis beam, and the triangular extensions are used to increase the connection assembly between the reinforcing main plates and the suspension bodies; and a bolt assembly, wherein the bolt assembly passes through the reinforcing main plates and the connecting parts in sequence and is threadedly assembled with the chassis beam.

[0005] Preferably, each of the reinforced motherboards includes a motherboard body, a plurality of first hollow slots formed on the motherboard body, and a first slot and a second slot formed on one side of the motherboard body, wherein the first slot can be assembled with a triangular support member, and the second slot can be assembled with a triangular extension member.

[0006] Preferably, the triangular support is provided in several parts, each triangular support including a first triangular plate, with two reinforcing strips fixed on the upper and lower surfaces of the first triangular plate, wherein the distance between the two vertical plates placed at the same end matches the thickness of the main body, and when the first triangular plate is inserted into the first slot, the two sets of reinforcing strips limit the locking and locking on both sides of the main body; and several second hollow slots opened on the first triangular plate.

[0007] Preferably, the triangular extension includes a second triangular plate with a groove at the tip of the middle part of the second triangular plate; and a vertical plate fixed to the bottom of the second triangular plate on the side away from the groove. When the second triangular plate is embedded in the second slot, the vertical plate is close to the lower part of the main body and is distributed in a T-shape with the main body. It also includes a fastening component disposed on the vertical plate for detachable assembly and disassembly of the vertical plate and the end of the suspension body.

[0008] Preferably, the fastening assembly includes a plurality of third through holes formed in the lower part of the vertical plate, each third through hole having a third bolt body; and a third screw hole formed at the end of the corresponding suspension body and corresponding to the plurality of third through holes. When the third bolt body passes through the third through hole and is threadedly connected to the third screw hole, it is used for connecting and assembling the vertical plate and the suspension body.

[0009] Preferably, the top of the second triangular plate is also symmetrically fixed with reinforcing plates, wherein the two reinforcing plates are perpendicularly distributed to the second triangular plate and the main plate, and a gap is reserved in the middle of the two reinforcing plates for the main plate to pass through.

[0010] Preferably, the bolt assembly includes a first bolt structure for threaded locking of each first triangular plate and the main body, and a second bolt structure for threaded locking of the main body and the second triangular plate; wherein each first bolt structure includes a first through hole opened on the main body corresponding to the first slot position, and a first threaded hole opened on the first triangular plate; it also includes a first bolt body, which, when the first triangular plate is embedded in the first slot, can spirally enter the first through hole and the first threaded hole and be used for the connection of the main body and the first triangular plate.

[0011] Preferably, the second bolt structure includes a second through hole formed in the main body and communicating with the second slot; and a welding plate fixed on the side of the second triangular plate away from the groove and weldable to the chassis beam, wherein the welding plate and the second triangular plate are provided with a second screw hole in the transverse direction; and also includes a second bolt body that can be spirally inserted into the second through hole and the second screw hole for connecting and assembling the main body and the second triangular plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses an integrated and modular reinforcing device to firmly connect the key load-bearing components (chassis beam and suspension body) of the chassis suspension system with the reinforcing structure (reinforcing main board) into a whole. This design, through a scientific mechanical structure, utilizes the principle of efficient force transmission and dispersion to comprehensively improve the load-bearing capacity, structural stability and service life of the chassis suspension. Attached Figure Description

[0013] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention after disassembly; Figure 2 This is a second-view perspective three-dimensional structural diagram of the disassembled present invention; Figure 3 This is a schematic diagram of the third-person perspective three-dimensional structure of the present invention after disassembly; Figure 4 This is a first-view structural diagram of the present invention in its working state; Figure 5 This is a second-view schematic diagram of the working state of this utility model; Figure 6 This is a third-view structural diagram of the present invention in its working state; Figure 7 This is a front view structural diagram of the present invention.

[0014] In the diagram: 111, chassis beam; 112, suspension body; 113, second triangular plate; 114, vertical plate; 115, third bolt body; 116, main body; 117, second slot; 118, second through hole; 119, groove; 120, second screw hole; 121, first through hole; 122, first slot; 123, first triangular plate; 124, reinforcing strip; 125, first screw hole; 126, welding plate; 127, third through hole; 211, reinforcing plate. Detailed Implementation

[0015] In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0016] Please see Figures 1 to 7 The present invention preferably provides the following technical solution: an external reinforcement device for the chassis suspension of a dump semi-trailer, wherein the chassis suspension includes a chassis beam 111 and several suspension bodies 112 disposed at the bottom of the chassis beam 111; the reinforcement device includes several sets of two symmetrically distributed reinforcing main plates and connectors that are plugged into each reinforcing main plate; the connectors include upper and lower distributed triangular supports and triangular extensions, wherein the triangular supports and triangular extensions are distributed in a cross shape with the reinforcing main plates, and the triangular supports can increase the connection between the reinforcing main plates and the chassis beam 111, and the triangular extensions are used to increase the connection between the reinforcing main plates and the suspension bodies 112; and a bolt assembly, wherein the bolt assembly passes through the reinforcing main plates and the connectors in sequence and is threadedly assembled with the chassis beam 111.

[0017] Combination Figure 4 , 5 6, 7. This application uses an integrated and modular reinforcing device to firmly connect the key load-bearing components (chassis beam 111 and suspension body 112) of the chassis suspension system with the reinforcing structure (reinforcing main board) into a whole. This design, through a scientific mechanical structure, utilizes the principle of efficient force transmission and dispersion to comprehensively improve the load-bearing capacity, structural stability and service life of the chassis suspension. Specifically: Considering that under heavy loads, stress in traditional suspension systems tends to concentrate on the chassis beam 111 and its connection with the suspension body 112, the reinforcing device provided in this application, such as... Figure 1 , 2As shown in Figures 3 and 4, the several sets of reinforcing main boards correspond one-to-one with several suspension bodies 112 and are used to reinforce the installation of the corresponding suspension bodies 112 and chassis beams 111. Taking a single set of reinforcing main boards as an example, the two reinforcing main boards in a single set can form the main reinforcing plane between their corresponding suspension bodies 112 and chassis beams 111. The key connecting parts (triangular supports and triangular extensions) are distributed in a "cross" pattern with the reinforcing main boards. This essentially forms a stable triangular support structure at the key nodes. Because triangles have extremely high stability in mechanics, when the vehicle is loaded with heavy objects or travels on bumpy roads, the impact force and load will be more evenly distributed to the two reinforcing main boards and the entire chassis beam 111 through the triangular supports and triangular extensions, avoiding stress concentration. This greatly reduces the peak stress at the key connection points, effectively preventing the generation and propagation of metal fatigue cracks, thereby extending the overall service life of the chassis suspension system. In addition, the two symmetrical reinforced main boards are connected to key components of the chassis in multiple points and directions in the horizontal and vertical directions through connectors. This "bundled" structure greatly enhances the rigidity of this part when subjected to complex loads (such as torsion, bending, and lateral forces), thereby increasing the torsional stiffness of the chassis when the vehicle turns or changes lanes, reducing body roll and sway, and improving handling stability and safety. For dump trucks, the chassis will bear huge asymmetrical loads during the lifting and unloading process. The above structure can effectively suppress the torsion of the chassis caused by the lifting of the truck bed, making the unloading process smoother and safer. In addition, the modular design, which strengthens the motherboard and connectors by using a "plug-in assembly" method and finally locks them in place with a "bolt assembly", has the following advantages; First, it is easy to install. During vehicle manufacturing or aftermarket modification, the device can be quickly positioned and installed as a whole module, which improves production efficiency. Secondly, maintenance is convenient. If a component (such as a triangular part) is damaged, it can be replaced relatively easily without large-scale cutting and welding of the main chassis structure, which reduces maintenance costs and time.

[0018] In summary, this external reinforcement device for the chassis suspension of the dump semi-trailer perfectly combines strength, stiffness, stability, and durability through the principles of triangular mechanics and modular integrated design, comprehensively improving the load-bearing capacity, structural stability, installation convenience, and service life of the chassis suspension.

[0019] Furthermore, each reinforced motherboard includes a motherboard body 116, a plurality of first hollow slots formed on the motherboard body 116; and a first slot 122 and a second slot 117 formed on one side of the motherboard body 116, and the first slot 122 can be assembled with a triangular support, and the second slot 117 can be assembled with a triangular extension.

[0020] Strengthen the motherboard, such as Figure 1 , 2 As shown in Figure 3, the first hollow slots opened on the main board body 116 can reduce the weight of the main board body 116 and improve portability. The first slot 122 and the second slot 117 opened on one side of the main board body 116 can be assembled with the triangular support and the triangular extension respectively. Since the triangular support is connected to the chassis beam 111 and the triangular extension is connected to the suspension body 112, the suspension body 112 and the chassis beam 111 can be reinforced and installed under the connection between the main board body 116 and the triangular support and the triangular extension.

[0021] Furthermore, several triangular supports are provided, each triangular support including a first triangular plate 123, with two reinforcing strips 124 fixed on the upper and lower surfaces of the first triangular plate 123. The distance between the two vertical plates 114 placed at the same end matches the thickness of the main body 116. When the first triangular plate 123 is inserted into the first slot 122, the two sets of reinforcing strips 124 limit the locking and locking on both sides of the main body 116; and several second hollow slots are opened on the first triangular plate 123.

[0022] Here as Figure 1 , 2 As shown in Figure 3, each of the first triangular plates 123 has two reinforcing strips 124 fixed at the top and bottom with a certain gap. When the first triangular plate 123 is inserted into the corresponding first slot 122 where the main body 116 is located, the two sets of reinforcing strips 124 can be clamped on both sides of the main body 116 to strengthen the connection between the first triangular plate 123 and the main body 116. At the same time, the second hollow slot opened on the first triangular plate 123 further increases the weight of the first triangular plate 123 and improves the portability of the assembly. Since the first triangular plate 123 is connected to the chassis beam 111 by a bolt assembly, in order to strengthen the stability of the connection, the threaded connection between the bolt assembly and the first triangular plate 123 and the chassis beam 111 can be used as a pre-positioning so that the first triangular plate 123 can be welded to the chassis beam 111 later.

[0023] Furthermore, the triangular extension includes a second triangular plate 113, a groove 119 formed at the tip of the middle part of the second triangular plate 113; and a vertical plate 114 fixed to the bottom of the second triangular plate 113 on the side away from the groove 119. When the second triangular plate 113 is embedded in the second slot 117, the vertical plate 114 is close to the lower part of the main body 116 and is distributed in a T-shape with the main body 116. It also includes a fastening component provided on the vertical plate 114 for detachable assembly and disassembly of the vertical plate 114 and the end of the suspension body 112.

[0024] like Figure 1 , 2As shown in Figure 3, the second triangular plate 113 has a groove 119 and a vertical plate 114 on both sides. When the second triangular plate 113 is embedded in the second slot 117 where the main body 116 is located, the groove 119 at the tip of the second triangular plate 113 can increase the embedding depth of the second triangular plate 113 and the main body 116. At the same time, the vertical plate 114 can abut against the lower part of the main body 116 and be distributed in a T-shape with the main body 116. Since the vertical plate 114 and the suspension body 112 are assembled through fastening components, the connection function of the main body 116 can be realized, thereby realizing the reinforcement operation of the chassis beam 111 and the suspension body 112.

[0025] Furthermore, the fastening assembly includes a plurality of third through holes 127 formed in the lower part of the vertical plate 114, each third through hole 127 having a third bolt body 115 therein; and third threaded holes formed in the end of the corresponding suspension body 112 and corresponding one-to-one with the plurality of third through holes 127. When the third bolt body 115 passes through the third through hole 127 and is threadedly connected to the third threaded hole, it is used for the connection and assembly of the vertical plate 114 and the suspension body 112, such as... Figure 1 , 2 As shown in Figure 3, the vertical plate 114 and its corresponding suspension body 112 are respectively provided with a third through hole 127 and a third screw hole. When the third bolt body 115 provided in the third through hole 127 passes through the third through hole 127 and is threadedly connected to the third screw hole, the triangular extension can be assembled with the suspension body 112. At the same time, the second triangular plate 113, the main body 116 and the first triangular plate 123, the main body 116 can also be assembled with the triangular extension and the triangular support to the main body 116 through the bolt assembly. The triangular support can also be welded to the chassis beam 111, thereby realizing the connection between the chassis beam 111 and the suspension body 112.

[0026] Furthermore, the top of the second triangular plate 113 is symmetrically fixed with reinforcing plates 211, wherein the two reinforcing plates 211 are perpendicularly distributed with the second triangular plate 113 and the main plate 116, and a gap is reserved in the middle of the two reinforcing plates 211 for the main plate 116 to pass through.

[0027] like Figure 1 , 2 As shown in Figures 3 and 5, the two reinforcing plates 211 here can reinforce the installation stability of the second triangular plate 113 and the main body 116. Because the two reinforcing plates 211 and the vertical plate 114 are all vertically distributed with the second triangular plate 113 and the main body 116, combined with the vertical design of the first triangular plate 123 with the main body 116 and the chassis beam 111, this application forms a multi-point, multi-directional connection with the key components of the chassis in both horizontal and vertical directions, thereby improving the torsional resistance.

[0028] Furthermore, the bolt assembly includes a first bolt structure for threaded locking of each first triangular plate 123 and the main body 116, and a second bolt structure for threaded locking of the main body 116 and the second triangular plate 113; wherein, each first bolt structure includes a first through hole 121 opened on the main body 116 corresponding to the position of the first slot 122, and a first threaded hole 125 opened on the first triangular plate 123; it also includes a first bolt body, which, when the first triangular plate 123 is embedded in the first slot 122, can spirally enter the first through hole 121 and the first threaded hole 125. 25 is used for connecting the main body 116 and the first triangular plate 123; further, the second bolt structure includes a second through hole 118 opened in the main body 116 and communicating with the second slot 117; and a welding plate 126 fixed on the side of the second triangular plate 113 away from the groove 119 and weldable to the chassis beam 111, with a second screw hole 120 laterally opened inside the welding plate 126 and the second triangular plate 113; and also includes a second bolt body that can be spirally inserted into the second through hole 118 and the second screw hole 120 for connecting and assembling the main body 116 and the second triangular plate 113.

[0029] As shown in 1 and 2, the main body 116 has a first through hole 121 and a second through hole 118 respectively at the first slot 122 and the second slot 117. The first triangular plate 123, the second triangular plate 113 and the welding plate 126 have a first screw hole 125 and a second screw hole 120 respectively. Since the first triangular plate 123 and the welding plate 126 are both welded to the chassis beam 111, when the suspension body 112 is locked to the vertical plate 114 by the third bolt body 115, the first bolt body and the second bolt body can be passed through the first through hole 121 and the first screw hole 125, the second through hole 118 and the second screw hole 120 respectively, so as to realize the locking process between the main body 116 and the first triangular plate 123 and the second triangular plate 113.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "connection", "fixation" and other terms should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral part. There are various ways to install detachably, such as by using a plug-in and snap-fit ​​method, or by using a bolt connection, etc.

[0031] The above description of the specific embodiments of this utility model is only used to further illustrate this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-essential improvements and adjustments made to this utility model by technical engineers based on the above description of the utility model shall fall within the scope of protection of this utility model.

Claims

1. An external reinforcement device for the chassis suspension of a dump semi-trailer, wherein the chassis suspension includes a chassis beam (111) and a plurality of suspension bodies (112) disposed at the bottom of the chassis beam (111), characterized in that: The chassis suspension includes a chassis beam (111) and a plurality of suspension bodies (112) disposed at the bottom of the chassis beam (111): The strengthening device includes several sets of two symmetrically distributed strengthening main boards and connectors that are plugged into and assembled with each of the strengthening main boards; The connecting component includes upper and lower triangular supports and triangular extensions. The triangular supports and triangular extensions are arranged in a cross shape with the main board. The triangular supports can increase the connection assembly between the main board and the chassis beam (111), and the triangular extensions are used to increase the connection assembly between the main board and the suspension body (112). And bolt assembly, which sequentially passes through the reinforcing main board, the connector and is threadedly assembled with the chassis beam (111).

2. The chassis suspension reinforcement device for a dump semi-trailer according to claim 1, characterized in that: Each of the reinforced motherboards includes a motherboard body (116) with a plurality of first hollow slots formed on the motherboard body (116); The first slot (122) and the second slot (117) are provided on the upper and lower sides of the main body (116), and the first slot (122) can be assembled with the triangular support and the second slot (117) can be assembled with the triangular extension.

3. The chassis suspension reinforcement device for a dump semi-trailer according to claim 2, characterized in that: The triangular support is provided in several parts, each triangular support includes a first triangular plate (123), and two reinforcing strips (124) are fixed on the upper and lower surfaces of the first triangular plate (123). The distance between the two vertical plates (114) placed at the same end matches the thickness of the main body (116). When the first triangular plate (123) is inserted into the first slot (122), the two sets of reinforcing strips (124) limit the locking and locking on both sides of the main body (116). And several second hollow slots opened on the first triangular plate (123).

4. The chassis suspension reinforcement device for a dump semi-trailer according to claim 3, characterized in that: The triangular extension includes a second triangular plate (113) with a groove (119) at the tip of the middle part of the second triangular plate (113). And a vertical plate (114) fixed to the bottom of the second triangular plate (113) on the side away from the groove (119). When the second triangular plate (113) is embedded in the second slot (117), the vertical plate (114) is close to the lower part of the main body (116) and is distributed in a T-shape with the main body (116). It also includes fastening components disposed on the vertical plate (114) for detachable assembly of the vertical plate (114) and the end of the suspension body (112).

5. The chassis suspension reinforcement device for a dump semi-trailer according to claim 4, characterized in that: The fastening assembly includes a plurality of third through holes (127) formed in the lower part of the vertical plate (114), and each third through hole (127) is provided with a third bolt body (115). And a third screw hole opened at the end of the corresponding suspension body (112) and corresponding to a number of third through holes (127) is used for the connection and assembly of the vertical plate (114) and the suspension body (112) when the third bolt body (115) passes through the third through hole (127) and is threadedly connected to the third screw hole.

6. The chassis suspension reinforcement device for a dump semi-trailer according to claim 4, characterized in that: The top of the second triangular plate (113) is also symmetrically fixed with a reinforcing plate (211). The two reinforcing plates (211) are perpendicularly distributed with the second triangular plate (113) and the main body (116), and a gap is reserved in the middle of the two reinforcing plates (211) for the main body (116) to pass through.

7. The chassis suspension reinforcement device for a dump semi-trailer according to claim 4, characterized in that: The bolt assembly includes a first bolt structure for threaded locking of each first triangular plate (123) and main body (116) and a second bolt structure for threaded locking of the main body (116) and second triangular plate (113); Each of the first bolt structures includes a first through hole (121) opened on the main body (116) corresponding to the position of the first slot (122), and a first screw hole (125) opened on the first triangular plate (123). It also includes a first bolt body. When the first triangular plate (123) is embedded in the first slot (122), the first threaded body can spirally enter the first through hole (121) and the first screw hole (125) and be used for the connection of the main body (116) and the first triangular plate (123).

8. The chassis suspension external reinforcement device for a dump semi-trailer according to claim 7, characterized in that: The second bolt structure includes a second through hole (118) formed on the main body (116) and communicating with the second slot (117). And a welding plate (126) fixed on the side of the second triangular plate (113) away from the groove (119) and weldable to the chassis beam (111), wherein the welding plate (126) and the second triangular plate (113) are provided with a second screw hole (120) in the transverse direction. It also includes a second bolt body that can be spirally inserted into the second through hole (118) and the second screw hole (120) for connecting and assembling the main body (116) and the second triangular plate (113).

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