A heavy truck tractor rear suspension leaf spring support assembly boring device

By designing a boring device that includes a tooling table, a hydraulic rotary cylinder, and a positioning pin, the problem of high labor intensity and low efficiency in boring the rear suspension torsion spring bracket assembly of heavy truck tractors was solved, achieving high-precision machining and improved production efficiency.

CN224359397UActive Publication Date: 2026-06-16SHAANXI HUAZHEN AUTO PARTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHAANXI HUAZHEN AUTO PARTS CO LTD
Filing Date
2025-06-18
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

The lack of dedicated boring tools for the rear suspension leaf torsion spring bracket assembly of heavy-duty truck tractors results in high labor intensity, low efficiency, and unstable quality.

Method used

A boring device including a tooling table, a hydraulic rotary cylinder, a lifting ring, and a locating pin is designed. The workpiece is clamped by the hydraulic rotary cylinder, and the design of the locating pin and the lifting ring achieves stable positioning of the workpiece and convenient operation.

🎯Benefits of technology

It reduces labor intensity, improves operational safety and processing accuracy, reduces scrap rate, is suitable for various processing scenarios, and improves production efficiency and equipment durability.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224359397U_ABST
    Figure CN224359397U_ABST
Patent Text Reader

Abstract

The utility model relates to a kind of boring device of heavy truck tractor rear suspension piece torsion spring support assembly, including tooling table, oil pressure corner cylinder, lifting ring and positioning pin;Two oil pressure corner cylinders are provided on the left side of tooling table, one oil pressure corner cylinder is provided on the right side of tooling table, pressure plate is provided on oil pressure corner cylinder, pressure block is provided on pressure plate, tooling table is further provided with several lifting rings and positioning pins;The utility model is compact in structure, low in cost, small in site occupation.
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Description

Technical Field

[0001] This utility model relates to the field of boring technology, and in particular to a boring device for a rear suspension leaf torsion spring bracket assembly of a heavy truck tractor. Background Technology

[0002] There is no dedicated boring tool for the rear suspension leaf torsion spring bracket assembly of heavy truck tractors. Generally, ordinary square boxes are used for manual loading and unloading to bore the leaf torsion spring bracket assembly, which is labor-intensive, inefficient, and results in unstable quality. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a boring device for the rear suspension leaf torsion spring bracket assembly of a heavy-duty truck tractor.

[0004] The present invention adopts the following technical solution:

[0005] A boring device for a rear suspension leaf torsion spring bracket assembly of a heavy-duty truck tractor includes a tooling table, a hydraulic rotary cylinder, lifting rings, and positioning pins. Two hydraulic rotary cylinders are arranged on the left side of the tooling table, and one hydraulic rotary cylinder is arranged on the right side of the tooling table. A pressure plate is arranged on the hydraulic rotary cylinder, and a pressure block is arranged on the pressure plate. Several lifting rings and positioning pins are also arranged on the tooling table.

[0006] Preferably, the tooling table includes a base plate, a left support and a right support; the two hydraulic rotary cylinders on the left are respectively mounted on the left support via cylinder pads, and the one hydraulic rotary cylinder on the right is mounted on the right support via cylinder pads.

[0007] Preferably, it also includes a positioning plate; the positioning plate is disposed on the left side bracket, and the two positioning pins are disposed on the positioning plate.

[0008] Preferably, both the left and right supports are inverted U-shaped structures.

[0009] Preferably, the lifting ring is disposed on the base plate.

[0010] Preferably, a notch is provided on the top right side of the right-side bracket.

[0011] Preferably, the bottom plate has two notches on the right side.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] This invention facilitates the positioning and installation of the plate torsion spring bracket assembly by setting a positioning pin, and facilitates the clamping and installation of the plate torsion spring bracket assembly by setting a hydraulic angle cylinder, thereby reducing labor intensity and improving operational safety; the addition of a lifting ring facilitates the lifting of the entire device; this invention has a compact structure, low cost, and small footprint. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] In the diagram: 1. Base plate; 2. Left side bracket; 3. Positioning plate; 4. Positioning pin; 5. Hydraulic cylinder gasket; 6. Hydraulic angle cylinder; 7. Pressure plate; 8. Pressure block; 9. Right side bracket; 10. Notch 1; 11. Notch 2; 12. Lifting ring. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise explicitly specified and limited, the embodiments and features described in the embodiments of this application can be combined with each other. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] like Figure 1 As shown: A boring device for a rear suspension torsion spring bracket assembly of a heavy truck tractor includes a tooling table, a hydraulic rotary cylinder 6, lifting rings and positioning pins; two hydraulic rotary cylinders 6 are arranged on the left side of the tooling table, and one hydraulic rotary cylinder 6 is arranged on the right side of the tooling table. A pressure plate 7 is arranged on the hydraulic rotary cylinder 6, and a pressure block 8 is arranged on the pressure plate 7. Several lifting rings 12 and positioning pins 4 are also arranged on the tooling table. Preferably, a pressure block 8 is provided on the right pressure plate 7. Due to the plate torsion spring bracket structure, the pressure block 8 increases the clamping force of the tooling and facilitates the fastening of the plate torsion spring bracket. The pressure block 8 usually has a large contact area, which can evenly distribute the concentrated force of the hydraulic cylinder 6 on the surface of the object being pressed, and apply pressure evenly, avoiding excessive local pressure that could cause damage or uneven deformation of the object. The pressure block 8 can also play a role in positioning and fixing the workpiece, ensuring that the workpiece maintains the correct position and posture during processing, preventing displacement or shaking, and improving processing accuracy. When the pressure of the hydraulic cylinder 6 changes suddenly or is impacted, the pressure block 8 can play a certain role in buffering and shock absorption, reducing the impact and vibration on the system, and protecting the equipment and the workpiece.

[0018] The aforementioned fixture features three hydraulic rotary cylinders 6 mounted on a tooling table. Clamping is achieved through hydraulic components, providing a high clamping force that ensures the stability and reliability of the workpiece during processing, reducing scrap rates caused by deformation and guaranteeing product quality. The high repeatability of the clamping force of the hydraulic rotary cylinders 6 ensures accurate positioning and clamping, making it suitable for applications requiring high machining precision. The hydraulic fixture is easy to load and unload, simplifying product assembly and saving significant time and manpower in clamping and unloading workpieces, thus improving production efficiency. Furthermore, the optimized hydraulic rotary cylinders 6, pressure plate 7, and pressure block 8 result in a more compact design, suitable for use in confined spaces. Its structural design provides high torque resistance, improving product durability and sealing, making it suitable for various scenarios such as CNC machine tools, machining centers, and automated production lines, with a wide range of applications. When machining brittle materials, adjusting the clamping force effectively protects the integrity of the workpiece, preventing breakage due to excessive clamping force.

[0019] Furthermore, the tooling table includes a base plate 1, a left support 2, and a right support 9; two hydraulic angle cylinders 6 on the left are respectively mounted on the left support 2 via cylinder gaskets, and one hydraulic angle cylinder 6 on the right is mounted on the right support 9 via a cylinder gasket 5. The base plate 1 supports the vehicle leaf torsion spring bracket assembly, the left support 2 supports the two hydraulic angle cylinders 6, and the right support 9 supports the one hydraulic angle cylinder 6. Preferably, the tooling table is welded from carbon structural steel plates, and the positioning surface is integrally milled after welding to ensure flatness requirements; and the cylinder gasket 5 and the hydraulic angle cylinder 6 are bolted together.

[0020] It also includes a positioning plate; the positioning plate is set on the left bracket 2, and two positioning pins 4 are set on the positioning plate 3. The positioning pins 4 are used for positioning the vehicle leaf torsion spring bracket assembly.

[0021] Both the left support 2 and the right support 9 have an inverted U-shaped structure, which facilitates weight reduction.

[0022] The lifting rings 12 are mounted on the base plate 1. Preferably, there are four lifting rings 12 to facilitate manual lifting of the tooling during loading and unloading, reducing the intensity of heavy physical labor. Preferably, the lifting rings 12 are eye bolts, and the lifting rings 12 are bolted to the base plate 1.

[0023] The right side bracket 9 has a notch 10 on the top right side. Notch 10 is a positioning surface for the machining surface, which is connected to the machining surface of the torsion spring bracket to facilitate product positioning and machining.

[0024] Two notches, numbered 11, are provided on the right side of the base plate 1. Notches 11 are for fixing to the vertical machining center with connecting bolts, facilitating the positioning and connection of the tooling with the vertical machining center. When machining the torsion spring support, the stable support and positioning provided by the tooling can reduce workpiece vibration and displacement, allowing the tool to experience more even force during cutting, thereby extending tool life and reducing tool costs.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A boring device for a rear suspension leaf torsion spring bracket assembly of a heavy-duty truck tractor, characterized in that, It includes a tooling table, a hydraulic angle cylinder (6), a lifting ring (12), and a positioning pin (4); two hydraulic angle cylinders (6) are arranged on the left side of the tooling table, and one hydraulic angle cylinder (6) is arranged on the right side of the tooling table. A pressure plate (7) is arranged on the hydraulic angle cylinder (6), and a pressure block (8) is arranged on the pressure plate (7). Several lifting rings (12) and positioning pins (4) are also arranged on the tooling table.

2. The boring device for the rear suspension leaf torsion spring bracket assembly of a heavy-duty truck tractor as described in claim 1, characterized in that, The tooling table includes a base plate (1), a left support (2) and a right support (9); the two hydraulic rotary cylinders (6) on the left are respectively mounted on the left support (2) via cylinder pads (5), and the one hydraulic rotary cylinder (6) on the right is mounted on the right support (9) via cylinder pads (5).

3. The boring device for the rear suspension leaf torsion spring bracket assembly of a heavy-duty truck tractor as described in claim 2, characterized in that, It also includes a positioning plate (3); the positioning plate (3) is disposed on the left side bracket (2), and the two positioning pins (4) are disposed on the positioning plate (3).

4. The boring device for the rear suspension leaf torsion spring bracket assembly of a heavy-duty truck tractor as described in claim 3, characterized in that, Both the left support (2) and the right support (9) are inverted U-shaped structures.

5. The boring device for the rear suspension leaf torsion spring bracket assembly of a heavy-duty truck tractor as described in claim 2, characterized in that, The lifting ring (12) is mounted on the base plate (1).

6. The boring device for the rear suspension leaf torsion spring bracket assembly of a heavy-duty truck tractor as described in claim 4, characterized in that, The right-side bracket (9) has a notch (10) on the top right side.

7. The boring device for the rear suspension leaf torsion spring bracket assembly of a heavy-duty truck tractor as described in claim 6, characterized in that, Two notches (11) are provided on the right side of the base plate (1).