A detection tool for a commercial vehicle cab suspension stabilizer bar

Abstract

The utility model discloses a kind of detection tool of commercial vehicle cab suspension stabilizer bar, belong to commercial vehicle parts detection technical field.The detection tool includes detection tool base, crossbar support seat, crossbar pressure head, rear bushing positioning plate, rear bushing pressure head, front bushing detection pin, rear bushing detection pin, sliding seat and adjusting base and the like component.By setting adjustable sliding seat and positioning structure, the quick clamping of stabilizer bar assembly and multi-parameter synchronous detection are realized, effectively solve the problem of low detection efficiency, large error, high cost in prior art.The utility model has the advantages of simple structure, convenient operation, high detection precision, strong universality, etc., suitable for quick quality control in mass production.

Description

Technical Field

[0001] This utility model relates to the field of commercial vehicle component testing technology, specifically to a testing fixture for a commercial vehicle cab suspension stabilizer bar. Background Technology

[0002] Commercial vehicle cabs are typically connected to the chassis via a suspension system to improve driving comfort. The stabilizer bar is a key component of the cab suspension system, its main function being to reduce cab roll when cornering or driving on uneven surfaces, thereby improving vehicle handling stability and ride comfort. The shape and dimensions of the stabilizer bar, especially the accuracy of the relative positions of its two connection points (such as hole spacing, height, and angle), directly affect its ease of installation and performance.

[0003] Currently, the inspection of stabilizer bars is mostly carried out using coordinate measuring machines (CMMs) or general measuring tools (such as tape measures and angle gauges). While CMMs offer high precision, they are expensive, have stringent operating environment requirements, long inspection cycles, and demand highly skilled operators, making them unsuitable for rapid, batch inspections. Using general measuring tools, on the other hand, suffers from large measurement errors, low efficiency, poor consistency of results, and the inability to measure certain spatial positions. Both of these inspection methods fail to meet the requirements of production line quality control and production cycle time.

[0004] Therefore, there is an urgent need for a tooling specifically designed for stabilizer bar inspection, capable of rapid, accurate, and efficient inspection of dimensions, position, and angles, timely determination of product qualification, and ensuring the overall product quality of the vehicle. Utility Model Content

[0005] Therefore, this utility model provides a testing fixture for the suspension stabilizer bar of a commercial vehicle cab to solve the above-mentioned problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] According to a first aspect of this utility model, a testing fixture for a commercial vehicle cab suspension stabilizer bar includes a testing fixture base and a stabilizer bar assembly. The testing fixture base serves as the mounting foundation for the entire fixture. The stabilizer bar assembly includes a rear bushing, a front bushing, a crossbar, and a crossbar cantilever. A crossbar support seat is fixedly disposed in the middle region of the testing fixture base to support the crossbar of the stabilizer bar assembly. A crossbar pressure head base is fixedly disposed on the testing fixture base and directly above the crossbar support seat. A crossbar pressure head is movably connected to the bottom of the crossbar pressure head base. The rod pressure head can be raised and lowered vertically to press or release the crossbar. A rear bushing positioning plate is fixed to one end of the testing fixture base. The top of the rear bushing positioning plate has a positioning groove that matches the outer contour of the stabilizer rod's rear bushing. A rear bushing slide rail is laterally fixed on the testing fixture base, beside the rear bushing positioning plate. A right rear bushing sliding seat and a left rear bushing sliding seat are slidably connected to both ends of the rear bushing slide rail, respectively. These two seats can move laterally along the slide rail to approach or move away from the rear bushing positioning plate. The top of the base is fixed with rear bushing pressure heads for pressing the rear bushings from both sides. The other end of the testing fixture base is horizontally fixed with a front bushing fixing fixture slide rail, parallel to the rear bushing slide rail. A front bushing fixing fixture is slidably connected to the front bushing fixing fixture slide rail. A front bushing testing pin is vertically fixed to the top of the front bushing fixing fixture for inserting into the positioning hole of the stabilizer bar front bushing to test the hole position accuracy. An adjusting base is slidably connected to the testing fixture base between the crossbar support and the front bushing fixing fixture slide rail. The crossbar... The support base is fixed to the top of the adjustment base. The lateral position of the adjustment base is adjusted to accommodate stabilizing bar assemblies of different widths. Detection pin one and detection pin two are vertically fixed on both sides of the rear bushing positioning plate, respectively, for insertion into the mounting holes of the rear bushing to detect relative position and included angle. The crossbar cantilever is a curved bar structure. One end of the crossbar cantilever is rigidly connected to the rear bushing, and the other end of the crossbar cantilever is connected to the other side of the crossbar cantilever through the crossbar, forming a symmetrical U-shaped frame. The top of the rear bushing positioning plate is provided with a rear bushing detection pin.

[0008] Furthermore, the testing fixture base is made of high-strength steel plate, and the bottom is detachably connected to a bracket with casters.

[0009] Furthermore, the crossbar pressure head and the crossbar pressure head base are connected by a screw or cylinder drive to achieve rapid pressing and releasing of the crossbar.

[0010] Furthermore, both the right sliding seat and the left sliding seat of the rear bushing are provided with locking bolts to fix them to the rear bushing slide rail after sliding into position.

[0011] Furthermore, the diameter of the front bushing detection pin is consistent with the nominal diameter of the locating hole of the front bushing of the stabilizer bar, and its length is not less than the thickness of the front bushing.

[0012] Furthermore, the adjustment base is slidably connected to the detection fixture base via a T-slot and its position is locked by a bolt assembly.

[0013] Furthermore, the inner wall of the positioning groove of the rear bushing positioning plate is provided with a wear-resistant pad, and the thickness of the pad matches the tolerance range of the rear bushing.

[0014] Furthermore, the included angle between the axes of the first and second detection pins is consistent with the design included angle of the rear bushing of the stabilizer bar, and the distance between them is equal to the design hole spacing of the rear bushing mounting holes.

[0015] This utility model has the following advantages: it requires low operator skills, eliminates the need for complex measurements and calculations, and only requires observation of whether the detection pin can pass through, thus reducing human error, enabling rapid clamping and detection of the stabilizer bar, shortening the detection time, providing high detection accuracy, and ensuring good consistency of results. Compared with a coordinate measuring machine, this fixture has lower manufacturing costs and is simpler to maintain. By replacing the positioning pin, adjusting the support base and sliding detection bracket, it can be adapted to different specifications of lateral stabilizer bars without replacing the entire fixture, thereby reducing equipment investment costs. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a schematic diagram of the structure of a testing fixture for a commercial vehicle cab suspension stabilizer bar according to this utility model;

[0019] Figure 2 This is a schematic diagram of the cab suspension stabilizer bar assembly of a testing tool for commercial vehicle cabs;

[0020] Figure 3This is a schematic diagram of the stabilizer bar testing status of a testing fixture for the cab suspension stabilizer bar of a commercial vehicle.

[0021] In the diagram: 1. Front bushing inspection pin; 2. Front bushing fixing fixture slide rail; 3. Front bushing fixing fixture; 4. Crossbar pressure head; 5. Crossbar support seat; 6. Crossbar pressure head base; 7. Adjustment base; 8. Rear bushing right sliding seat; 9. Rear bushing slide rail; 10. Inspection pin one; 11. Rear bushing left sliding seat; 12. Rear bushing pressure head; 13. Inspection pin two; 14. Rear bushing positioning plate; 15. Rear bushing inspection pin; 16. Inspection fixture base; 17. Stabilizer assembly; 1701. Rear bushing; 1702. Front bushing; 1703. Crossbar; 1704. Cantilever. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Example 1

[0024] like Figures 1 to 3As shown, a testing fixture for a commercial vehicle cab suspension stabilizer bar according to a first aspect embodiment of the present invention includes a testing fixture base 16 and a stabilizer bar assembly 17. The testing fixture base 16 serves as the mounting base for the entire fixture and is typically a rectangular or square steel plate. The stabilizer bar assembly 17 includes a rear bushing 1701, a front bushing 1702, a crossbar 1703, and a crossbar cantilever 1704. A crossbar support seat 5 is fixedly installed in the middle region of the testing fixture base 16 to support the crossbar 1703 of the stabilizer bar assembly 17. A crossbar pressure head base 6 is fixedly installed on the testing fixture base 16 and directly above the crossbar support seat 5. The bottom of the crossbar pressure head base 6... A crossbar pressure head 4 is movably connected to the crossbar pressure head 4, which is threadedly connected to the threaded hole on the crossbar pressure head base 6 via bolts. This allows the crossbar pressure head 4 to be raised and lowered vertically to press or release the crossbar 1703. A rear bushing positioning plate 14 is fixed to one end of the testing fixture base 16. The top of the rear bushing positioning plate 14 has a positioning groove that matches the outer circumferential contour of the stabilizer bar rear bushing 1701. A rear bushing slide rail 9 is laterally fixed on the testing fixture base 16 and located next to the rear bushing positioning plate 14. The two ends of the rear bushing slide rail 9 are slidably connected to the right rear bushing slide seat 8 and the left rear bushing slide seat 11, respectively. The two can move laterally along the slide rail to move closer to or away from the rear bushing 1703. The bushing positioning plate 14, the top of the right sliding seat 8 and the left sliding seat 11 of the rear bushing are respectively fixed with rear bushing pressure heads 12, which are used to press the rear bushing 1701 from both sides. The other end of the testing fixture base 16 is fixed with a front bushing fixing fixture slide rail 2 along the transverse direction, and is set parallel to the rear bushing slide rail 9. A front bushing fixing fixture 3 is slidably connected on the front bushing fixing fixture slide rail 2. A front bushing testing pin 1 is vertically fixed on the top of the front bushing fixing fixture 3, which is used to insert into the positioning hole of the front bushing 1702 of the stabilizer bar to test the hole position accuracy. An adjustment base is slidably connected on the testing fixture base 16 between the crossbar support seat 5 and the front bushing fixing fixture slide rail 2. The base 7; the crossbar support 5 is fixed to the top of the adjusting base 7. The lateral position of the adjusting base 7 is adjusted to adapt to the stabilizer bar assemblies of different widths. The two sides of the rear bushing positioning plate 14 are respectively vertically fixed with detection pin 10 and detection pin 2 13, which are used to insert into the mounting holes of the rear bushing 1701 to detect the relative position and included angle. The crossbar cantilever 1704 is a curved bar structure. One end of the crossbar cantilever 1704 is rigidly connected to the rear bushing 1701, and the other end of the crossbar cantilever 1704 is connected to the other side of the crossbar cantilever 1704 through the crossbar 1703, forming a symmetrical U-shaped frame structure. The top of the rear bushing positioning plate 14 is provided with a rear bushing detection pin 15.

[0025] In the above embodiments, it should be noted that the crossbar pressure head 4 presses or releases the crossbar 1703 through lifting and lowering movement to ensure that the stabilizer assembly 17 remains stable during the testing process; the rear bushing pressure head 12 presses the rear bushing 1701 from both sides, and cooperates with the rear bushing positioning plate 14 to achieve precise positioning; the front bushing detection pin 1 is inserted into the positioning hole of the front bushing 1702 to verify the hole position accuracy; the lateral movement of the adjustment base 7 is adapted to stabilizer bars of different specifications to improve versatility.

[0026] The technical effects achieved by the above embodiments are as follows: through the coordinated action of components such as the crossbar support seat 5, the crossbar pressure head 4, the rear bushing positioning plate 14, and the rear bushing pressure head 12, the stabilizer assembly can be quickly clamped and fixed, providing a basis for multi-parameter synchronous detection and improving detection efficiency and consistency.

[0027] Example 2

[0028] like Figures 1 to 3 As shown in the figure, this embodiment provides another testing fixture for the suspension stabilizer bar of a commercial vehicle cab, the structure of which includes all the contents of embodiment 1. Only the different parts are described below.

[0029] In this embodiment, the testing fixture base 16 is made of high-strength steel plate, and the bottom is detachably connected to a bracket with casters. The crossbar pressure head 4 and the crossbar pressure head base 6 are connected by a screw or cylinder to achieve rapid pressing and releasing of the crossbar 1703.

[0030] In this embodiment, it should be noted that the high-strength steel plate ensures that the testing fixture base 16 has sufficient strength and durability; the bracket with casters facilitates the movement and positioning of the fixture, improving the flexibility of use; the screw or cylinder drive provides stable and fast clamping force, simplifying the operation process.

[0031] The technical effects achieved by this embodiment are: enhancing the stability and portability of the tooling, enabling rapid clamping and release, suitable for frequent movement and efficient testing on the production line, and reducing labor intensity.

[0032] Example 3

[0033] like Figures 1 to 3 As shown in the figure, this embodiment provides another testing fixture for the suspension stabilizer bar of a commercial vehicle cab, the structure of which includes all the contents of embodiment 1. Only the different parts are described below.

[0034] In this embodiment, locking bolts are provided on both the right sliding seat 8 and the left sliding seat 11 of the rear bushing, which are used to fix them on the rear bushing slide rail 9 after sliding into place. The diameter of the front bushing detection pin 1 is consistent with the nominal diameter of the positioning hole of the front bushing 1702 of the stabilizer bar, and its length is not less than the thickness of the front bushing 1702.

[0035] In this embodiment, it should be noted that the locking bolts ensure that the right sliding seat 8 and the left sliding seat 11 of the rear bushing are firmly locked after the position is adjusted to prevent displacement during the testing process; the dimensional accuracy of the front bushing detection pin 1 ensures matching with the positioning hole of the front bushing 1702 to accurately detect hole position deviation.

[0036] The technical effects achieved by this embodiment are: improving clamping stability and detection accuracy, ensuring consistent repeated detection results, reducing human error, and being suitable for batch quality control.

[0037] Example 4

[0038] like Figures 1 to 3 As shown in the figure, this embodiment provides another testing fixture for the suspension stabilizer bar of a commercial vehicle cab, the structure of which includes all the contents of embodiment 1. Only the different parts are described below.

[0039] In this embodiment, the adjustment base 7 is slidably connected to the testing fixture base 16 via a T-slot and locked in position by a bolt assembly. The inner wall of the positioning groove of the rear bushing positioning plate 14 is provided with a wear-resistant pad, and the pad thickness matches the tolerance range of the rear bushing 1701. The included angle of the axes of the first testing pin 10 and the second testing pin 13 is consistent with the design included angle of the rear bushing 1701 of the stabilizer rod, and the distance between the two is equal to the hole spacing of the mounting holes of the rear bushing 1701.

[0040] In this embodiment, it should be noted that the T-slot sliding connection makes the adjustment base 7 move smoothly and easy to lock, adapting to stabilizers of different widths; the wear-resistant liner reduces wear on the positioning groove, extends the tooling life, and compensates for the tolerance of the rear bushing 1701; the preset included angle and spacing of the detection pin 10 and the detection pin 2 13 ensure the position accuracy and included angle detection accuracy of the rear bushing mounting hole.

[0041] The technical effects achieved by this embodiment are: improving the adjustability, wear resistance and detection accuracy of the tooling, ensuring rapid and accurate detection of stabilizer bars of various specifications, and extending the service life of the tooling.

[0042] The technical effect achieved by this embodiment is as follows: In use, firstly, the stabilizer assembly 17 is placed on the testing fixture base 16, and its crossbar 1703 is supported by the crossbar support seat 5. The crossbar pressure head 4 is driven by the crossbar pressure head base 6 to descend vertically and press the crossbar 1703, ensuring that the stabilizer remains fixed during the testing process. The rear bushing 1701 is placed in the positioning groove of the rear bushing positioning plate 14, which matches the outer peripheral contour of the rear bushing 1701. The right sliding seat 8 and the left sliding seat 11 of the rear bushing move laterally along the rear bushing slide rail 9, driving the rear bushing pressure head 12 to press the rear bushing 1701 from both sides, achieving precise positioning.

[0043] At the other end of the fixture, the front bushing fixing fixture 3 moves along the front bushing fixing fixture slide rail 2, so that the front bushing detection pin 1 is inserted into the positioning hole of the stabilizer bar front bushing 1702 to detect its hole position accuracy. To adapt to stabilizer bar assemblies of different widths, the adjusting base 7 is slidably connected to the detection fixture base 16 through a T-slot;

[0044] The crossbar support 5 is fixed to the top of the adjusting base 7, and the width of the stabilizer bar is matched by adjusting the lateral position of the adjusting base 7. The rear bushing positioning plate 14 has two detection pins, 10 and 13, on both sides, which are inserted into the mounting holes of the rear bushing 1701 to detect the relative position and angle between the mounting holes. The rear bushing detection pin 15 is also used for further inspection of the rear bushing. The entire fixture, through adjustable sliding seats and positioning structures, enables rapid clamping of the stabilizer bar, reduces human error, achieves high detection accuracy, and is suitable for rapid quality control in mass production.

[0045] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0046] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.

Claims

1. A testing fixture for a commercial vehicle cab suspension stabilizer bar, characterized in that, The instrument includes a testing fixture base (16), and a crossbar support seat (5) is fixedly provided in the middle area of ​​the testing fixture base (16) to support the crossbar (1703) of the stabilizer assembly (17). A crossbar pressure head base (6) is fixedly installed on the testing fixture base (16) and directly above the crossbar support base (5). A crossbar pressure head (4) is movably connected to the bottom of the crossbar pressure head base (6). The crossbar pressure head (4) can be raised and lowered in the vertical direction to press or release the crossbar (1703). One end of the testing fixture base (16) is fixed with a rear bushing positioning plate (14). The top of the rear bushing positioning plate (14) is provided with a positioning groove that matches the outer periphery of the stabilizer rod rear bushing (1701). A rear bushing slide rail (9) is horizontally fixed on the testing fixture base (16) and located next to the rear bushing positioning plate (14). The two ends of the rear bushing slide rail (9) are respectively slidably connected with a rear bushing right sliding seat (8) and a rear bushing left sliding seat (11). The two can move laterally along the slide rail to approach or move away from the rear bushing positioning plate (14). The top of the rear bushing positioning plate (14) is provided with a rear bushing inspection... The test pin (15), the right sliding seat (8) of the rear bushing and the left sliding seat (11) of the rear bushing are respectively fixed with rear bushing pressure heads (12) for pressing the rear bushing (1701) from both sides. The other end of the test fixture base (16) is fixed with a front bushing fixing fixture slide rail (2) in the transverse direction and is set parallel to the rear bushing slide rail (9). A front bushing fixing fixture (3) is slidably connected on the front bushing fixing fixture slide rail (2). A front bushing test pin (1) is vertically fixed on the top of the front bushing fixing fixture (3) for inserting into the positioning hole of the front bushing (1702) of the stabilizer bar to test the hole position accuracy. An adjustment base (7) is slidably connected on the testing fixture base (16) and between the crossbar support seat (5) and the front bushing fixing fixture slide rail (2). The crossbar support seat (5) is fixed to the top of the adjustment base (7). The lateral position of the adjustment base (7) is adjusted to adapt to the stabilizer assemblies of different widths. The two sides of the rear bushing positioning plate (14) are respectively vertically fixed with a first detection pin (10) and a second detection pin (13) for inserting into the mounting hole of the rear bushing (1701) to detect the relative position and included angle.

2. The testing fixture for the suspension stabilizer bar of a commercial vehicle cab according to claim 1, characterized in that: The testing fixture base (16) is made of high-strength steel plate, and the bottom of the testing fixture base (16) is detachably connected to a bracket with casters.

3. The testing fixture for the suspension stabilizer bar of a commercial vehicle cab according to claim 1, characterized in that: The crossbar pressure head (4) and the crossbar pressure head base (6) are connected by a screw or cylinder to achieve rapid pressing and releasing of the crossbar (1703).

4. The testing fixture for the suspension stabilizer bar of a commercial vehicle cab according to claim 1, characterized in that: Both the right sliding seat (8) and the left sliding seat (11) of the rear bushing are provided with locking bolts, which are used to fix them to the rear bushing slide rail (9) after sliding into place.

5. The testing fixture for a commercial vehicle cab suspension stabilizer bar according to claim 1, characterized in that: The diameter of the front bushing detection pin (1) is consistent with the nominal diameter of the positioning hole of the front bushing (1702) of the stabilizer bar, and its length is not less than the thickness of the front bushing (1702).

6. The testing fixture for a commercial vehicle cab suspension stabilizer bar according to claim 1, characterized in that: The adjustment base (7) is slidably connected to the detection fixture base (16) through a T-slot and is locked in position by a bolt assembly.

7. The testing fixture for a commercial vehicle cab suspension stabilizer bar according to claim 1, characterized in that: The inner wall of the positioning groove of the rear bushing positioning plate (14) is provided with a wear-resistant pad, and the thickness of the pad matches the tolerance range of the rear bushing (1701).

8. The testing fixture for a commercial vehicle cab suspension stabilizer bar according to claim 1, characterized in that: The included angle between the axes of the first detection pin (10) and the second detection pin (13) is consistent with the design included angle of the rear bushing (1701) of the stabilizer bar, and the distance between the two is equal to the design hole spacing of the mounting hole of the rear bushing (1701).

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