Special-shaped high-stress conjoined front plate spring assembly

Abstract

The utility model provides a special-shaped high-stress conjoined front plate spring assembly which comprises a main spring, an auxiliary spring and a fixing mechanism, and the auxiliary spring is installed above the main spring. The main spring comprises a main spring leaf assembly, the auxiliary spring comprises an auxiliary spring leaf assembly, the fixing mechanism comprises a center fastening bolt assembly, a connecting plate assembly and a clamp assembly, and the center fastening bolt assembly comprises a fastening bolt and a fastening nut. The fastening bolt sequentially passes through the centers of the plurality of main reeds and the gaskets between the top main reed and the bottom auxiliary reed and then is fixed at two ends through fastening nuts; the connecting plate assembly comprises connecting plates arranged on the two sides of the top main reed and the two sides of the bottom auxiliary reed, and the hoop assembly comprises a hoop piece arranged on the main reed assembly. The special-shaped high-stress connected front plate spring assembly is suitable for a front plate spring of a truck, the overall bearing capacity of the front plate spring can be improved, the running safety and smoothness of the truck are guaranteed, and the service life of the plate spring is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile leaf spring manufacturing, in particular to a special-shaped high-stress connected front leaf spring assembly. Background Art

[0002] Leaf springs are important elastic components in automobile suspension systems. They have the advantages of good reliability, simple structure, short manufacturing process and low cost, so they are widely used in the automotive field. Modern heavy-duty vehicles are carrying more and more loads, so the requirements for leaf springs' load-bearing capacity are getting higher and higher, and they also need to have good comfort.

[0003] However, the front leaf spring of a conventional truck is only supported by the main spring, and its carrying capacity is far from meeting the high requirements of modern trucks for carrying. Therefore, it is necessary to continuously improve the structure of the front leaf spring of a truck to improve its carrying capacity. Utility Model Content

[0004] In order to better solve the above problems, the utility model provides a special-shaped high-stress connected front leaf spring assembly, which can improve the overall load-bearing capacity of the front leaf spring, ensure the vehicle's driving safety and smoothness, extend the service life of the leaf spring, meet the high requirements of trucks for the load-bearing capacity of leaf springs, and is suitable for the front leaf springs of trucks.

[0005] To achieve the above-mentioned purpose, an embodiment of the utility model provides a special-shaped high-stress connected front leaf spring assembly, including a main spring, a secondary spring and a fixing mechanism, wherein the secondary spring is installed above the main spring; the main spring includes a main spring assembly, which includes multiple main springs and multiple gaskets; the secondary spring includes a secondary spring assembly, which includes multiple secondary springs and multiple gaskets; the fixing mechanism includes a central fastening bolt assembly, a connecting plate assembly and a clamp assembly, wherein the central fastening bolt assembly includes a fastening bolt and a fastening nut, wherein the fastening bolt passes through the centers of multiple main springs, the gaskets between the top main spring and the bottom secondary spring in sequence, and is then fixed at both ends by fastening nuts; the connecting plate assembly includes connecting plates arranged on both sides of the top main spring and the bottom secondary spring, and the clamp assembly includes a clamp member arranged on the main spring assembly.

[0006] Optionally, the length of the main reed assembly is greater than the length of the secondary reed assembly.

[0007] Optionally, the cross-sectional areas of the plurality of main reeds of the main reed assembly are equal, and the lengths decrease sequentially from top to bottom.

[0008] Optionally, first rolled ears are provided at both ends of the top main reed of the main reed assembly, and the first rolled ears are arc-shaped structures formed by extending outward in an arc shape from the left and right ends of the top main reed.

[0009] Optionally, both ends of the sub-top main reed of the main reed assembly are provided with second rolled ear pieces, and the second rolled ear pieces are arc-shaped structures formed by extending outward in an arc shape from the left and right ends of the sub-top main reed, and the second rolled ear pieces are the ears of the corresponding first rolled ear pieces.

[0010] Optionally, both left and right ends of the plurality of main reeds below the second top main reed are chamfered.

[0011] Optionally, the cross-sectional areas of the plurality of auxiliary springs of the auxiliary spring assembly are equal, and the lengths decrease sequentially from top to bottom.

[0012] Optionally, left and right ends of the plurality of auxiliary reeds of the auxiliary reed assembly are chamfered.

[0013] Optionally, at least one group of clamp members of the clamp assembly, and two clamp members of each group of clamp members are respectively arranged at two ends of the middle main spring of the main spring assembly, for fixing the main spring clamp between the top main spring and the middle main spring.

[0014] Optionally, both ends of the plurality of main reeds and the plurality of auxiliary reeds are rolled with rib grooves so that adjacent main reeds match with each other and adjacent auxiliary reeds match with each other.

[0015] The special-shaped high-stress connected front leaf spring assembly of the embodiment of the utility model is composed of a main spring and a secondary spring stacked together. The secondary spring is installed on the main spring, and the main spring and the secondary spring are fixed together by a central fastening bolt and a connecting plate. The stability of the connection and fixation between the main spring and the secondary spring can be guaranteed, and the occurrence of misalignment can be effectively avoided, thereby ensuring the driving safety of the vehicle. The special-shaped high-stress connected front leaf spring assembly can greatly improve the overall bearing capacity of the leaf spring, is suitable for the front leaf spring of a truck, has a long service life, and is supported by the main spring for vibration reduction when unloaded. When fully loaded, the main spring and the secondary spring act simultaneously, and can improve the smoothness of vehicle driving and the comfort when unloaded.

[0016] The special-shaped high-stress one-piece front leaf spring assembly has a coiled ear design at both ends of the top main spring leaf of the main spring, which can improve the safety of the vehicle; the leaf spring leaves of the main spring and the auxiliary spring fit tightly together and have high adaptability, which can avoid the leaf spring dislocation phenomenon under complex road conditions and further improve the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1It is a structural schematic diagram of a special-shaped high-stress connected front leaf spring assembly according to an embodiment of the utility model.

[0019] Reference numerals:

[0020] 1. Main spring; 2. First main spring leaf; 3. Second main spring leaf; 4. Auxiliary spring; 5. First auxiliary spring leaf; 6. Fastening bolt; 7. Fastening nut; 8. Connecting plate; 9. Clamp; 10. First rolled ear piece; 11. Second rolled ear piece; 12. Bending hook; 13. Normal state position. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited to the basic implementation disclosed below.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] like Figure 1 As shown, the special-shaped high-stress one-piece front leaf spring assembly of the embodiment of the utility model includes a main spring 1, a secondary spring 4 and a fixing mechanism, and the secondary spring 4 is installed above the main spring 1; the main spring 1 includes a main spring assembly, and the main spring assembly includes multiple main springs and multiple gaskets; the secondary spring 4 includes a secondary spring assembly, and the secondary spring assembly includes multiple secondary springs and multiple gaskets; the fixing mechanism includes a central fastening bolt assembly, a connecting plate assembly and a clamp assembly, and the central fastening bolt assembly includes a fastening bolt 6 and a fastening nut 7, and the fastening bolt 6 passes through the centers of multiple main springs, the gaskets between the top main spring and the bottom secondary spring in sequence, and is fixed at both ends by fastening nuts 7; the connecting plate assembly includes a connecting plate 8 arranged on both sides of the top main spring and the bottom secondary spring, and the clamp assembly includes a clamp 9 arranged on the main spring assembly.

[0024] In the leaf spring assembly of the embodiment of the utility model, the main spring assembly and the auxiliary spring assembly are normally in an overall upward warping state, that is, Figure 1The normal state position 13 shown in the figure (the warping state of the auxiliary spring is not shown in the figure); the ends of the plurality of main springs and auxiliary springs are warped upward, and the warping amplitude of the main springs is greater than that of the auxiliary springs; when the vehicle is fully loaded, the main springs and auxiliary springs will be pressed into a flat state, that is, Figure 1 The overall condition of the leaf spring assembly is shown.

[0025] In this embodiment, the main reed assembly includes eleven main reeds, and the figure shows the first main reed 2, the second main reed 3, the third main reed, the fourth main reed, the fifth main reed, the sixth main reed, the seventh main reed, the eighth main reed, the ninth main reed, the tenth main reed and the eleventh main reed arranged from top to bottom. A gasket is arranged between each main reed, the gasket thickness is 1mm, and the surface is galvanized; the cross-sectional area of ​​each main reed is equal, and the length decreases from top to bottom, and the left and right ends of each main reed are chamfered so that the main spring is in an inverted triangle shape as a whole.

[0026] The auxiliary reed assembly includes ten auxiliary reeds, and the figure shows the first auxiliary reed 5, the second auxiliary reed, the third auxiliary reed, the fourth auxiliary reed, the fifth auxiliary reed, the sixth auxiliary reed, the seventh auxiliary reed, the eighth auxiliary reed, the ninth auxiliary reed and the tenth auxiliary reed arranged from top to bottom. A gasket is arranged between each auxiliary reed, the gasket thickness is 1mm, and the surface is galvanized; the cross-sectional area of ​​each auxiliary reed is equal, and the length decreases from top to bottom, and the left and right ends of each auxiliary reed are chamfered so that the auxiliary reed is an inverted triangle as a whole.

[0027] The overall length of the main spring is greater than the overall length of the auxiliary spring. Specifically, the length of the main reed assembly is greater than the length of the auxiliary reed assembly. For example, the length of the first main reed 2 is greater than the length of the first auxiliary reed 5, the length of the second main reed 3 is greater than the length of the second auxiliary reed, and the lengths of the main reeds and auxiliary reeds decrease successively, until the length of the tenth main reed is greater than the length of the tenth auxiliary reed.

[0028] The main spring 1 is superimposed on the auxiliary spring 4, and an intermediate gasket is arranged between the tenth auxiliary spring and the first main spring, and the thickness of the intermediate gasket is similar to that of the main spring. In the fixing mechanism, a through hole is opened at the center of multiple main springs, auxiliary springs and gaskets to facilitate the passage of the central fastening bolt. The two ends of the central fastening bolt are respectively leaked at the bottom end of the main spring assembly and the top end of the auxiliary spring assembly, which are used to connect with the fastening nut to fasten and fix the main spring assembly and the auxiliary spring assembly. In addition, the top of the main spring assembly and the bottom of the auxiliary spring assembly are also connected and fixed by a connecting plate assembly, which can further improve the connection stability of the main spring and the auxiliary spring. In practical applications, the connecting plate 8 can connect and fix at least one main spring at the top and at least one auxiliary spring at the bottom. For example, the connecting plate 8 shown in the figure connects and fixes the tenth auxiliary spring and the first main spring. In addition, the connecting plate 8 can also connect and fix the ninth auxiliary spring, the tenth auxiliary spring and the first main spring and the second main spring. Here, the connecting plate 8 can be a vertical plate with clips at both ends. The length of the connecting plate 8 is customized according to the superimposed thickness of the main spring and the auxiliary spring to be fixed. The connecting plate 8 is installed on the outside of the main spring and the auxiliary spring by using the clips at both ends to clip up and down on the lower side of the main spring and the upper side of the auxiliary spring, so that the main spring and the auxiliary spring can be fixedly connected; the number of connecting plates 8 is 4, which are respectively installed on both sides of the two ends of the auxiliary spring to be fixedly connected (corresponding to the middle of the main spring).

[0029] At least one group of clamps 9 of the clamp assembly, and two clamps 9 of each group of clamps are respectively arranged at the two ends of the middle main spring of the main spring assembly, and are used to clamp and fix the main spring between the top main spring and the middle main spring. The clamp assembly shown in the figure includes a group of clamps, which are arranged at the two ends of the fifth main spring, and are used to fix the first main spring, the second main spring, the third main spring, the fourth main spring, and the fifth main spring. Here, the clamp 9 can be a U-shaped plate-shaped clamp structure, with both ends facing downward and a circular hole, and a screw is installed in the circular hole and then tightened with a nut to achieve clamp fixation. Of course, in other embodiments, the clamp assembly can also include multiple groups of clamps, for example, including two groups of clamps 9, which are symmetrically arranged at the two ends of the fifth main spring and the eighth main spring, respectively, to further improve the fixing effect of the main spring assembly; and a clamp assembly can also be arranged on the auxiliary spring assembly.

[0030] In an optional embodiment, both ends of the top main reed (first main reed 2) of the main reed assembly are provided with first rolled ear pieces 10, and the first rolled ear piece 10 is an arc-shaped structure formed by the left and right ends of the top main reed extending outward in an arc shape; further, both ends of the sub-top main reed (second main reed 3) of the main reed assembly are provided with second rolled ear pieces 11, and the second rolled ear piece 11 is an arc-shaped structure formed by the left and right ends of the sub-top main reed extending outward in an arc shape, and the second rolled ear piece 11 matches the structure of the first rolled ear piece 10, and the second rolled ear piece 11 is the ear of the first rolled ear piece 10. Here, since the length of the first main reed is the longest, the arc extension length of the first rolled ear piece 10 is greater than the extension length of the second rolled ear piece 11, and the second rolled ear piece 11 is a half-wrapped ear, covering the corresponding part of the first rolled ear piece 10, for example, the first rolled ear piece 10 shown in the figure extends into a closed circular structure, and the second rolled ear piece 11 extends to cover the top of the first rolled ear piece 10.

[0031] The two ends of the top auxiliary spring (first auxiliary spring 5) of the auxiliary spring assembly are pressed downward to form a bent hook 12. Since the leaf spring assembly will be pressed into a straight device when the vehicle is fully loaded, the leaf spring is close to the axle. The provision of the bent hook structure can prevent the leaf spring from damaging the axle above the leaf spring assembly; at the same time, it is also beneficial to prevent the leaf spring from being dislocated, thereby improving the driving safety of the vehicle.

[0032] In actual application scenarios, the main spring leaves and auxiliary spring leaves in the special-shaped high-stress connected front leaf spring assembly of the embodiment of the utility model can be made of high-stress hot-rolled spring flat steel, and are processed through main processes such as end rolling, hot forming, heat treatment, shot peening, and assembly. Both ends are rolled with rib grooves, which can make adjacent main spring leaves match each other and adjacent auxiliary spring leaves fit closely, so that the stress distribution between adjacent spring leaves is more uniform, with high adaptability, which can avoid dislocation of leaf springs under complex road conditions and ensure the safety of the vehicle.

[0033] It should be pointed out that, according to the needs of implementation, the various components described in the embodiments of the present utility model can be split into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of the present utility model.

[0034] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A special-shaped high-stress conjoined front leaf spring assembly, characterized in that: It comprises a main spring, a secondary spring and a fixing mechanism, wherein the secondary spring is installed above the main spring; the main spring comprises a main spring assembly, wherein the main spring assembly comprises a plurality of main springs and a plurality of gaskets; the secondary spring comprises a secondary spring assembly, wherein the secondary spring assembly comprises a plurality of secondary springs and a plurality of gaskets; The fixing mechanism includes a central fastening bolt assembly, a connecting plate assembly and a clamp assembly. The central fastening bolt assembly includes a fastening bolt and a fastening nut. The fastening bolt passes through the centers of multiple main springs and the gaskets between the top main spring and the bottom auxiliary spring in sequence and is fixed at both ends by fastening nuts. The connecting plate assembly includes connecting plates arranged on both sides of the top main spring and the bottom auxiliary spring, and the clamp assembly includes a clamp member arranged on the main spring assembly.

2. The special-shaped high-stress one-piece front leaf spring assembly according to claim 1, characterized in that: The length of the main reed assembly is greater than the length of the auxiliary reed assembly.

3. The special-shaped high-stress one-piece front leaf spring assembly according to claim 2, characterized in that: The cross-sectional areas of the plurality of main springs of the main spring assembly are equal, and the lengths thereof decrease sequentially from top to bottom.

4. The special-shaped high-stress one-piece front leaf spring assembly according to claim 3, characterized in that: Both ends of the top main reed of the main reed assembly are provided with first rolled ears, and the first rolled ears are arc-shaped structures formed by the left and right ends of the top main reed extending outward in an arc shape.

5. The special-shaped high-stress one-piece front leaf spring assembly according to claim 4, characterized in that: Both ends of the sub-top main reed of the main reed assembly are provided with second rolled ear pieces, and the second rolled ear pieces are arc-shaped structures formed by extending outward in an arc shape from the left and right ends of the sub-top main reed, and the second rolled ear pieces are the ears of the corresponding first rolled ear pieces.

6. The special-shaped high-stress one-piece front leaf spring assembly according to claim 5, characterized in that: The left and right ends of the plurality of main reeds below the secondary top main reed are both chamfered.

7. The special-shaped high-stress one-piece front leaf spring assembly according to claim 2, characterized in that: The cross-sectional areas of the plurality of auxiliary springs of the auxiliary spring assembly are equal, and the lengths thereof decrease sequentially from top to bottom.

8. The special-shaped high-stress one-piece front leaf spring assembly according to claim 7, characterized in that: The left and right ends of the plurality of auxiliary reeds of the auxiliary reed assembly are chamfered.

9. The special-shaped high-stress one-piece front leaf spring assembly according to claim 1, characterized in that: At least one group of clamps of the clamp assembly, and two clamps of each group of clamps are respectively arranged at two ends of the middle main spring of the main spring assembly, for fixing the main spring clamp between the top main spring and the middle main spring.

10. A special-shaped high-stress conjoined front leaf spring assembly according to any one of claims 1 to 9, characterized in that: Both ends of the plurality of main springs and the plurality of auxiliary springs are rolled with rib grooves, so that adjacent main springs are matched with each other and adjacent auxiliary springs are matched with each other.

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