Steel plate spring front supporting frame welding part

Abstract

The utility model discloses a steel plate spring front support frame welding piece which comprises a frame and a steel plate spring, two sides of the bottom end of the frame are fixedly connected with mounting bottom plates, the bottom end of each mounting bottom plate is provided with four nuts, the top of each mounting bottom plate is fixedly provided with a detachable fixing frame, and the fixing frames are fixedly connected with the frame. The top end of the fixing frame is fixedly connected with the bottom end of a steel plate spring, two U-shaped bolts are arranged at the top end of the steel plate spring, bolt feet of the U-shaped bolts penetrate through the mounting bottom plate to be in threaded connection with nuts, four limiting screw holes are formed in the bottom end of the mounting bottom plate, and locking limiting assemblies matched with the limiting screw holes are welded to the side walls of the nuts. The nut is limited through the calibration notch, the locking limiting assembly and the limiting screw hole, so that the nut is prevented from loosening, and the safety of vehicle driving is improved; and through the arranged locking threads, the limiting firmness is further improved, convenience is provided for nut disassembly when the nut is disassembled, the structure is simple, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a welded part of a front support frame of a leaf spring. Background Art

[0002] Automobile leaf springs are important components of automobile suspension systems, serving as a connection between wheels and frames. The smoothness of automobile driving and the stability of operation are affected by automobile leaf springs. In order to obtain the best stability and good handling of the automobile, the high strength and long service life of automobile leaf springs must be ensured. Existing automobile leaf spring seats are prone to friction wear on the bridge housing after being used for a long time. Replacement requires disassembly of the bridge housing together with the spring seat, which is labor-intensive and time-consuming.

[0003] In the related technology, for example, the Chinese patent with application number: "202120476275.8", whose name is: "A welded part for a right front leaf spring and an extension part of an automobile", includes

[0004] The frame has a bottom plate fixedly installed at the bottom of both sides of the frame, fixing holes are opened at both sides of the bottom plate, screw caps are arranged at the bottom of the fixing holes, and a U-shaped cover plate is fixedly installed at the top of the bottom plate. When in use, first unscrew the fixing wires at both sides of the U-shaped cover plate, then unscrew the screw caps and take out the U-shaped bolts from the fixing holes at both sides of the bottom plate, then remove the leaf spring seat from the bridge housing, then pull the pull bolt to pull the second clamping block out of the second clamping slots at both sides of the base through the slider in the slide slot, then first clamp the new base through the first clamping slot and the first clamping block, then release the pull bolt to make the second clamping block recover through the spring in the slide slot, thereby reducing the friction loss of the leaf spring seat on the bridge housing, and there is no need to disassemble the bridge housing together with the bridge housing for replacement.

[0005] Although the above patent can reduce the friction wear of the leaf spring seat on the bridge housing, the nut will loosen when the vehicle is used for a long time, which will cause safety hazards to the driving of the vehicle. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, one of the purposes of the utility model is to provide a welded part of a leaf spring front support frame, which limits the nut by means of a calibration notch, a locking limit assembly, and a limit screw hole, thereby preventing the nut from loosening and improving the safety of vehicle driving; the firmness of the limit is further improved by means of a locking thread, and convenience is provided for disassembly of the nut, with a simple structure and strong practicality.

[0007] One of the purposes of the utility model is achieved by adopting the following technical scheme: a welded part of a front support frame of a leaf spring, comprising: a frame and a leaf spring, a mounting base plate is fixedly connected to both sides of the bottom end of the frame, four nuts are arranged at the bottom end of the mounting base plate, a detachable fixing frame is fixedly installed at the top of the mounting base plate, the top end of the fixing frame is fixedly connected to the bottom end of the leaf spring, two U-shaped bolts are arranged at the top end of the leaf spring, the bolt feet of the U-shaped bolts pass through the mounting base plate and are threadedly connected to the nuts, four limiting screw holes are opened at the bottom end of the mounting base plate, and locking and limiting components matching the limiting screw holes are welded on the side walls of the nuts;

[0008] The locking and limiting assembly includes a connecting ring, a locking screw hole is provided on the connecting ring, a plug is slidably connected to the inner wall of the locking screw hole, a rotating handle is provided at the bottom end of the plug, a connecting block is fixedly connected to the side wall of the plug, a rotating block is rotatably connected to the bottom end of the connecting block, a spring is fixedly connected between the bottom end of the rotating block and the top end of the rotating handle, and the top end of the connecting block is fixedly connected to the bottom end of the connecting ring. The nut is limited by the calibration notch, the locking and limiting assembly, and the limiting screw hole, which prevents the nut from loosening and improves the safety of vehicle driving; the locking thread is provided to further improve the firmness of the limit, and when the nut is disassembled, it is convenient for the nut to be disassembled, and the structure is simple and practical.

[0009] According to the welded part of the front support frame of the leaf spring, the side wall of the plug is provided with a locking thread, and the locking thread is matched with the limiting screw hole and the locking screw hole.

[0010] According to the welded part of the front support frame of the leaf spring, the side wall of the rotating handle is provided with anti-skid patterns to facilitate manual rotation.

[0011] The front support frame welded part of the leaf spring is provided, and the inner wall of the fixing frame is pasted with a rubber protective pad to reduce the friction loss of the leaf spring on the frame.

[0012] According to the welded part of the front support frame of the leaf spring, a slide groove is provided at the bottom end of the connecting block, a slider is provided at the top end of the rotating block, and the outer wall of the slider is slidably connected to the inner wall of the slide groove.

[0013] According to the leaf spring front support frame weldment, the bolt foot threads of the U-bolt are provided with calibration notches.

[0014] According to the leaf spring front support frame weldment, the position of the limiting screw hole corresponds to the position of the plug.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 It is a three-dimensional diagram of the welded parts of the front support frame of the leaf spring of the utility model;

[0018] Figure 2 It is a partial structural diagram of the welded parts of the front support frame of the leaf spring of the utility model;

[0019] Figure 3 This is a structural diagram of the locking and limiting assembly of the welded part of the front support frame of the leaf spring of the utility model;

[0020] Figure 4 It is a partial cross-sectional stereoscopic view of the welded part of the front support frame of the leaf spring of the utility model.

[0021] Legend:

[0022] 1. Frame; 2. Leaf spring; 3. U-bolt; 4. Mounting base plate; 5. Nut; 6. Locking limit assembly; 7. Fixing frame; 301. Calibration notch; 401. Limit screw hole; 601. Connecting ring; 6011. Locking screw hole; 602. Plug; 6021. Locking thread; 603. Rotating handle; 604. Connecting block; 6041. Slide groove; 605. Rotating block; 6051. Sliding block; 606. Spring. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] Reference Figure 1-4 The front support frame welded parts of the leaf spring of the utility model embodiment include: a frame 1, a leaf spring 2, a mounting base plate 4 is fixedly connected to both sides of the bottom end of the frame 1, four nuts 5 are arranged at the bottom end of the mounting base plate 4, a detachable fixing frame 7 is fixedly installed on the top of the mounting base plate 4, a rubber protective pad is pasted on the inner wall of the fixing frame 7 to reduce the friction loss of the leaf spring 2 on the frame 1, the top of the fixing frame 7 is fixedly connected to the bottom end of the leaf spring 2, two U-shaped bolts 3 are arranged at the top of the leaf spring 2, the bolt feet of the U-shaped bolts 3 pass through the mounting base plate 4 and are threadedly connected with the nuts 5, and the bolt feet of the U-shaped bolts 3 are provided with calibration notches 301, the bottom end of the mounting base plate 4 is provided with four limiting screw holes 401, and the side walls of the nuts 5 are welded with locking and limiting components 6 matching the limiting screw holes 401;

[0025] The locking and limiting assembly 6 includes a connecting ring 601, a locking screw hole 6011 is provided on the connecting ring 601, a plug 602 is slidably connected to the inner wall of the locking screw hole 6011, the position of the limiting screw hole 401 corresponds to the position of the plug 602, a locking thread 6021 is provided on the side wall of the plug 602, and the locking thread 6021 is adapted to the limiting screw hole 401 and the locking screw hole 6011, a rotary handle 603 is provided at the bottom end of the plug 602, and an anti-slip pattern is provided on the side wall of the rotary handle 603. To facilitate manual rotation, a connecting block 604 is fixedly connected to the side wall of the plug 602, and a rotating block 605 is rotatably connected to the bottom end of the connecting block 604. A sliding groove 6041 is provided at the bottom end of the connecting block 604, and a slider 6051 is provided at the top end of the rotating block 605. The outer wall of the slider 6051 is slidably connected to the inner wall of the sliding groove 6041. A spring 606 is fixedly connected between the bottom end of the rotating block 605 and the top end of the rotating handle 603, and the top end of the connecting block 604 is fixedly connected to the bottom end of the connecting ring 601. By setting the calibration notch 301, the locking limit assembly 6, and the limit screw hole 401, when the nut 5 is fixed to the thread of the U-bolt 3, the calibration notch 301 is used to calibrate and limit the rotation of the nut 5 to ensure that the plug 602 of the locking limit assembly 6 is aligned with the limit screw hole 401 of the mounting base 4. After fixing, the handle 603 is rotated to adjust the plug 602 to rotate, and the locking screw hole 6011 is released to lock the locking thread 6021. The spring 606 uses its tension to push the plug 602 into the limit screw hole 401, and the nut 5 is locked. The limit function prevents the nut 5 from loosening and improves the safety of vehicle driving. By setting the locking thread 6021 and the locking screw hole 6011, after the nut 5 is limited, the bolt 602 is rotated to make the locking thread 6021 threadedly connected with the limiting screw hole 401, thereby further improving the firmness of the limit function. When the nut 5 is disassembled, after the connection with the limiting screw hole 401 is released, the bolt 602 is rotated again to make the locking thread 6021 threadedly connected with the locking screw hole 6011, thereby providing convenience for the disassembly of the nut 5, having a simple structure and strong practicality.

[0026] Working principle: when in use, when the nut 5 is fixed with the U-bolt 3 by the thread, the calibration notch 301 is used to calibrate and limit the rotation of the nut 5 to ensure that the plug 602 of the locking and limiting assembly 6 is aligned with the limiting screw hole 401 of the mounting base plate 4. After fixing, the handle 603 is rotated to mobilize the plug 602 to rotate, and the locking screw hole 6011 is released to lock the locking thread 6021. The spring 606 uses its tension to push the plug 602 into the limiting screw hole 401 to limit the nut 5. After the nut 5 is limited, the plug 602 is rotated to make the locking thread 6021 threadedly connected with the limiting screw hole 401, further improving the firmness of the limit. When the nut 5 is disassembled, after releasing the connection with the limiting screw hole 401, the plug 602 is rotated again to make the locking thread 6021 threadedly connected with the locking screw hole 6011, providing convenience for the disassembly of the nut 5, with a simple structure and strong practicality.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. Leaf spring front support frame welded parts, including: A vehicle frame (1) and a leaf spring (2), characterized in that a mounting base plate (4) is fixedly connected to both sides of the bottom end of the vehicle frame (1), four nuts (5) are arranged at the bottom end of the mounting base plate (4), a detachable fixing frame (7) is fixedly installed at the top of the mounting base plate (4), the top end of the fixing frame (7) is fixedly connected to the bottom end of the leaf spring (2), two U-shaped bolts (3) are arranged at the top end of the leaf spring (2), the bolt feet of the U-shaped bolts (3) pass through the mounting base plate (4) and are threadedly connected to the nuts (5), four limiting screw holes (401) are opened at the bottom end of the mounting base plate (4), and a locking limiting component (6) matching the limiting screw holes (401) is welded to the side walls of the nuts (5); The locking and limiting assembly (6) comprises a connecting ring (601), a locking screw hole (6011) is formed on the connecting ring (601), a plug (602) is slidably connected to the inner wall of the locking screw hole (6011), a rotary handle (603) is provided at the bottom end of the plug (602), a connecting block (604) is fixedly connected to the side wall of the plug (602), a rotating block (605) is rotatably connected to the bottom end of the connecting block (604), a spring (606) is fixedly connected between the bottom end of the rotating block (605) and the top end of the rotary handle (603), and the top end of the connecting block (604) is fixedly connected to the bottom end of the connecting ring (601).

2. The leaf spring front support frame welded assembly according to claim 1, characterized in that: The side wall of the plug (602) is provided with a locking thread (6021), and the locking thread (6021) is compatible with the limiting screw hole (401) and the locking screw hole (6011).

3. The leaf spring front support frame weldment according to claim 1, characterized in that: The side wall of the rotating handle (603) is provided with anti-slip grooves.

4. The leaf spring front support frame weldment according to claim 1, characterized in that: A rubber protective pad is pasted on the inner wall of the fixing frame (7).

5. The leaf spring front support frame weldment according to claim 1, characterized in that: A sliding groove (6041) is provided at the bottom end of the connecting block (604), and a sliding block (6051) is provided at the top end of the rotating block (605). The outer wall of the sliding block (6051) is slidably connected to the inner wall of the sliding groove (6041).

6. The leaf spring front support frame weldment according to claim 1, characterized in that: The bolt foot threads of the U-shaped bolt (3) are each provided with a calibration notch (301).

7. The leaf spring front support frame weldment according to claim 1, characterized in that: The position of the limiting screw hole (401) corresponds to the position of the plug (602) 2.

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