An auxiliary fastening device for bench testing of a balanced suspension drive axle assembly.

Abstract

This invention relates to the field of drive axle test bench fastening devices, and discloses an auxiliary fastening device for test bench testing of a balanced suspension drive axle assembly. The device includes a base plate, connecting frames fixedly connected to both sides of the base plate, connecting grooves on both sides of the inner wall of the connecting frames, and a placement groove on the surface of the base plate. It also includes a transmission assembly, comprising an inlet plate fixedly connected to the surface of a contact plate, compression bladders fixedly connected to both sides of the inlet plate, contact feet fixedly connected to the inner wall of the compression bladders, and a snap-fit ​​clamp fixedly connected to the bottom of the inner wall of the inlet plate. An impact plate is slidably connected to the bottom of the inner wall of the snap-fit ​​clamp. By providing the transmission assembly, when the impact plate extends and retracts outward, it applies pressure to both ends of the test bench, ensuring that during test bench strength testing, all the pressure on both ends of the test bench is applied to the test bench body, thereby improving the accuracy of the test bench body strength test.

Description

Technical Field

[0001] This invention relates to the field of drive axle test bench fastening devices, specifically an auxiliary fastening device for test bench testing of a balanced suspension drive axle assembly. Background Technology

[0002] The structural features of the balanced suspension drive axle assembly are as follows: the wheels on both sides are connected by an integral drive axle, a "U"-shaped support is provided on the top of the drive axle housing, which is connected to the upper reaction rod of the balanced suspension, and two "U"-shaped supports are provided on the bottom of the drive axle housing, which are connected to the lower reaction rod of the balanced suspension respectively. The wheels and the axle are together suspended under the frame through the elastic suspension.

[0003] Patent application CN201911147292.0 discloses an auxiliary fastening device for bench testing of a balanced suspension drive axle assembly. The device includes a single-piece base frame that provides the main support, with a support platform at its front bottom and two parallel connecting support platforms at the rear end, designed to accommodate the vertical dimensions of the upper and lower "U"-shaped supports of the test drive axle assembly. There are three sets of connecting supports and thrust support assemblies, each corresponding to one of the three "U"-shaped supports of the test drive axle.

[0004] However, this patent also has the following shortcomings: when conducting strength tests on the balanced suspension drive axle assembly bench, the current testing method involves fixing both ends of the drive axle assembly bench and applying pressure to the main body of the drive axle bench. During vehicle operation, the pressure is transmitted to both ends of the suspension drive axle bench through the wheel hubs on both sides of the vehicle. Only when the two ends of the drive axle are subjected to pressure will it be transmitted to the main body of the bench. How can the force acting on the main body of the bench be transmitted from both ends to the main body of the bench while the bench strength test is conducted with the two ends of the drive axle bench fixed? In response to this situation, an auxiliary fastening device for testing the balanced suspension drive axle assembly bench is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary fastening device for bench testing of a balanced suspension drive axle assembly, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an auxiliary fastening device for bench testing of a balanced suspension drive axle assembly, comprising a base plate, connecting frames fixedly connected to both sides of the base plate, connecting grooves formed on both sides of the inner wall of the connecting frames, a placement groove formed on the surface of the base plate, a clamping mechanism provided at the groove holes on the surface of the connecting frames, and a protective mechanism provided at the bottom of the inner wall of the placement groove, and further comprising:

[0007] The contact mechanism includes a storage block that is slidably connected to both sides of the inner wall of the connecting groove via a slider. A folding ring is fixedly connected to the inner wall of the storage block, and air pressure pipes are fixedly connected to both sides of the inner wall of the storage block. A contact plate is fixedly connected to the end of the folding ring away from the inner wall of the storage block. A buffer pad is slidably connected to the bottom of the contact plate. A transmission component is provided on the surface of the contact plate. When the folding ring is subjected to pressure from the bottom, it will fold and bend inward. After bending, the folding ring will contact the air pressure pipes and buffer and absorb the generated pressure.

[0008] The transfer assembly includes an inlet plate fixedly connected to the surface of a contact plate, a compression bladder fixedly connected to both sides of the inlet plate, a contact foot fixedly connected to the inner wall of the compression bladder, a snap clamp fixedly connected to the bottom of the inner wall of the inlet plate, and an impact plate slidably connected to the bottom of the inner wall of the snap clamp. The two ends of the snap clamp will rub against the two ends of the platform to reduce the swing speed of the two ends of the platform.

[0009] According to the above technical solution, the clamping mechanism includes a side ring, which is fixedly connected to a slot on the surface of the connecting frame. A telescopic ring is slidably connected to one end of the side ring in the slot, and a compression tube is fixedly connected to the other end of the side ring away from the telescopic ring. The compression tube can extend and retract inward, and a pressure pad is slidably connected to the inner wall of the side ring at its top. A movable cavity is fixedly connected to the surface of the pressure pad, and push arms are rotatably connected to both sides of the inner wall of the movable cavity via a rotating shaft. An auxiliary component is provided on the surface of the side ring, and the top of the pressure pad is made of soft rubber material, which can wrap around both ends of the frame.

[0010] According to the above technical solution, the protective mechanism includes a connecting block, which is fixedly connected to the bottom of the inner wall of the placement groove. A connecting column is slidably connected to the bottom of the inner wall of the connecting block. A placement plate is fixedly connected to the end of the connecting column away from the connecting block. A pressure chamber is fixedly connected to the surface of the connecting column. The end of the pressure chamber away from the connecting block is fixedly connected to the surface of the placement plate. Protective pads are rotatably connected to both sides of the inner wall of the placement plate through a rotating shaft. Compression components are provided on both sides of the placement plate. Since one end of the pressure chamber is connected to the surface of the placement plate, when gas is received in the placement plate, it will flow into the interior of the pressure chamber.

[0011] According to the above technical solution, the auxiliary component includes a shrink tube, which is fixedly connected to the surface of the side ring. A receiving box is rotatably connected to the surface of the shrink tube via a rotating shaft. An impact tube is fixedly connected to the bottom of the inner wall of the receiving box. An impact plate is fixedly connected to one end of the impact tube away from the inner wall of the receiving box. One end of the impact plate is rotatably connected to both sides of the inner wall of the receiving box via a rotating shaft. When the impact tube expands and contracts outward, it will drive the impact plate to impact both ends of the drive bridge frame.

[0012] According to the above technical solution, the compression assembly includes a receiving tube, one end of which is fixedly connected to both sides of the placement plate. A limiting ring is fixedly connected to the end of the receiving tube away from the placement plate. A covering ring is fixedly connected to the end of the limiting ring away from the placement plate. A pushing block is slidably connected to the inner wall of the limiting ring. A gripping clamp is slidably connected to the inner wall of the pushing block. A compression strip is fixedly connected to the surface of the pushing block. The end of the compression strip away from the pushing block is fixedly connected to the inner wall of the limiting ring. Compressed gas will squeeze the gripping clamp out from the inside of the pushing block.

[0013] According to the above technical solution, the number of the limiting rings is set to two. The two limiting rings are symmetrically installed at one end of the receiving tube with the center line of the placement plate as the axis of symmetry. When the driving bridge frame swings left and right inside the limiting rings, it will generate pressure on the gripping clamp.

[0014] According to the above technical solution, the impact plate is symmetrically installed on the inner wall of the receiving box with the center line of the receiving box as the axis of symmetry, and a plug-in groove is opened at one end of the impact plate.

[0015] Compared with the prior art, the present invention provides an auxiliary fastening device for bench testing of a balanced suspension drive axle assembly, which has the following beneficial effects:

[0016] 1. The present invention has a contact mechanism. When the two ends of the platform swing, they will squeeze the buffer pad, causing the buffer pad to contract inward inside the contact plate and generate pressure. After receiving the pressure inside the contact plate, the air pressure pipe will bend in the folding ring and buffer and eliminate the pressure. This allows for strength testing of the platform and prevents the two ends of the platform from being damaged.

[0017] 2. This invention incorporates a transmission component, where the impact force generated by the impact of the impact disc is transmitted to the interior of the guide plate via the contact plate. This impact force causes multiple impact plates to extend outward from the inner wall of the clamp. As the impact plates extend and retract outward, they apply pressure to both ends of the test bench, ensuring that all the pressure on both ends of the test bench is applied to the test bench body during strength testing, thereby improving the accuracy of the strength test of the test bench body.

[0018] 3. The present invention is equipped with a clamping mechanism. When the impact tube expands and extends outward, it will drive the impact plate to impact both ends of the drive axle frame. By setting this component, when the surface of the drive axle frame is subjected to strength test, the applied pressure can be applied to both ends of the drive axle frame to apply pressure, so that the two ends of the drive axle frame can transmit pressure to the surface of the frame body for testing.

[0019] 4. This invention incorporates a protective mechanism. When the air pressure flowing into the pressure chamber through the receiving tube reaches a certain level, the air pressure causes the impact ring to slide on the surface of the pressure chamber. This indicates that the test strength of the test bench body has reached its maximum value. When the impact ring slides to the surface of the placement plate, it will impact the inside of the placement plate, causing the protective pad to pop out from the inner wall of the placement plate to buffer and protect the drive bridge test bench body, preventing the drive bridge test bench body from bending due to excessive strength testing. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a front view structural schematic diagram of the contact mechanism of the present invention;

[0023] Figure 3 This is a cross-sectional structural schematic diagram of the transmission component of the present invention;

[0024] Figure 4 This is a top view of the clamping mechanism of the present invention;

[0025] Figure 5 This is a front view structural diagram of the auxiliary component of the present invention;

[0026] Figure 6 This is a front view structural schematic diagram of the protective mechanism of the present invention;

[0027] Figure 7 This is a cross-sectional structural diagram of the compression component of the present invention.

[0028] In the diagram: 1. Base plate; 2. Placement slot; 3. Connecting frame; 4. Connecting slot; 5. Contact mechanism; 501. Storage block; 502. Folding ring; 503. Air pressure pipe; 504. Contact plate; 505. Buffer pad; 506. Transfer assembly; 5061. Inlet plate; 5062. Clip; 5063. Impact plate; 5064. Compression bladder; 5065. Contact foot; 6. Clamping mechanism; 601. Side ring; 602. Telescopic ring; 603. Compression pipe; 604. Pressure pad; 605. Movable cavity 606. Push arm; 607. Auxiliary component; 6071. Receiver box; 6072. Contraction tube; 6073. Impact plate; 6074. Impact tube; 7. Protective mechanism; 701. Connecting block; 702. Pressure chamber; 703. Impact ring; 704. Placement plate; 705. Protective pad; 706. Compression component; 7061. Receiver tube; 7062. Limiting ring; 7063. Push block; 7064. Gripping clamp; 7065. Compression strip; 7066. Covering ring; 707. Connecting column. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1, please refer to Figures 1-3 The present invention provides a technical solution: an auxiliary fastening device for bench testing of a balanced suspension drive axle assembly, comprising a base plate 1, connecting frames 3 fixedly connected to both sides of the base plate 1, connecting grooves 4 formed on both sides of the inner wall of the connecting frames 3, a placement groove 2 formed on the surface of the base plate 1, a clamping mechanism 6 provided at the groove hole on the surface of the connecting frames 3, and a protective mechanism 7 provided at the bottom of the inner wall of the placement groove 2, and further comprising:

[0031] The contact mechanism 5 includes a storage block 501 that is slidably connected to both sides of the inner wall of the connecting groove 4 via sliders. A folding ring 502 is fixedly connected to the inner wall of the storage block 501, and air pressure pipes 503 are fixedly connected to both sides of the inner wall of the storage block 501. The air pressure pipes 503 have the characteristic of absorbing pressure, and when they bend inward, they will come into contact with the inner wall of the folding ring 502, thereby absorbing the pressure and eliminating it by sliding. A contact plate 504 is fixedly connected to the end of the folding ring 502 away from the inner wall of the storage block 501. A buffer pad 505 is slidably connected to the bottom of the contact plate 504, and a transmission component 506 is provided on the surface of the contact plate 504.

[0032] The transfer assembly 506 includes an inlet plate 5061 fixedly connected to the surface of the contact plate 504. A tightening bladder 5064 is fixedly connected to both sides of the inlet plate 5061. A contact foot 5065 is fixedly connected to the inner wall of the tightening bladder 5064. The inside of the tightening bladder 5064 is made of soft rubber material, allowing one end of the contact foot 5065 to move freely inside the tightening bladder 5064, preventing the two ends of the platform from being fixed and unable to move. A snap clamp 5062 is fixedly connected to the bottom of the inner wall of the inlet plate 5061. An impact plate 5063 is slidably connected to the bottom of the inner wall of the snap clamp 5062.

[0033] The working principle of this embodiment is as follows: When the two ends of the drive axle frame swing inside the side ring 601, the pressure generated by the two ends on the surface of the pressure pad 604 will generate air pressure inside the side ring 601, thereby driving the storage block 501 to slide downward in the connecting groove 4 via the slider. When the storage block 501 drives the contact plate 504 to move to the bottom surface of the two ends of the drive axle frame through the folding ring 502, the two ends of the frame will squeeze the buffer pad 505 when swinging, causing the buffer pad 505 to contract inward inside the contact plate 504 and generate pressure. After receiving the pressure inside the contact plate 504, the air pressure pipe 503 will bend in the folding ring 502 and buffer and eliminate the pressure. This allows for strength testing of the frame and prevents damage to the two ends of the frame. When the guide plate 5061 moves towards... When the bottom moves to the two ends of the test bench, the two ends of the test bench can be clamped by the contact feet 5065 on both sides, fixing the two ends of the test bench to the bottom of the guide plate 5061. Friction can be generated at the two ends of the test bench by the snap clamp 5062. After the impact plate 6073 rotates inward into the absorption groove on the surface of the contact plate 504, the impact force generated by the impact plate 6073 will be transmitted to the interior of the guide plate 5061 through the contact plate 504. The impact force will drive multiple impact plates 5063 to extend outward from the inner wall of the snap clamp 5062. When the impact plates 5063 extend and retract outward, they will apply pressure to both ends of the test bench, ensuring that the pressure on both ends of the test bench will be fully applied to the test bench body during the test bench strength test, thereby improving the accuracy of the test bench body strength test.

[0034] Example 2: Based on Example 1, please refer to the following... Figures 4-5The clamping mechanism 6 includes a side ring 601, which is fixedly connected to a slot on the surface of the connecting frame 3. A telescopic ring 602 is slidably connected in the slot at one end of the side ring 601. A compression tube 603 is fixedly connected in the slot at the other end of the side ring 601 away from the telescopic ring 602. A plug rod is fixed at the end of the telescopic ring 602, and the volume of the plug rod is the same as the volume of the slot at the top of the compression tube 603. When the end of the telescopic ring 602 is inserted into the slot at the top of the compression tube 603, it will drive the compression tube 603. The inner wall of the side ring 601 is slidably connected to a pressure pad 604, and the surface of the pressure pad 604 is fixedly connected to a movable cavity 605. The inner walls of the movable cavity 605 are rotatably connected to push arms 606 via rotating shafts. The pressure pad 604 is filled with compressed gas. When the push arm 606 is squeezed and rotates on the inner wall of the movable cavity 605, the resulting thrust will discharge the compressed gas inside the pressure pad 604 to the outside. The surface of the side ring 601 is provided with an auxiliary component 607.

[0035] The auxiliary component 607 includes a shrink tube 6072, which is fixedly connected to the surface of the side ring 601. The surface of the shrink tube 6072 is rotatably connected to the receiving box 6071 via a rotating shaft. An impact tube 6074 is fixedly connected to the bottom of the inner wall of the receiving box 6071. An impact disc 6073 is fixedly connected to one end of the impact tube 6074 away from the inner wall of the receiving box 6071. One end of the impact disc 6073 is rotatably connected to both sides of the inner wall of the receiving box 6071 via a rotating shaft.

[0036] The working method of this embodiment is as follows: First, place both ends of the drive axle frame inside the side ring 601. Then, pull the telescopic ring 602 out from the inner wall of the side ring 601. After the telescopic ring 602 moves outward to the surface of the compression tube 603, insert the end of the telescopic ring 602 into the inner wall of the compression tube 603 to fix the telescopic ring 602 and the compression tube 603. When the compression tube 603 is squeezed, it will compress inward and discharge air pressure into the interior of the side ring 601, thereby squeezing the pressure pad 604 inside the side ring 601 outward. The ejected pressure pad 604 fixes both ends of the drive axle frame inside the side ring 601. When the two ends of the drive axle frame are subjected to a strength test, the pressure pad 604 inside the side ring 601 will be released. The device swings left and right. During the swing, the two ends of the drive bridge platform squeeze the push arm 606, causing the push arm 606 to rotate inside the active cavity 605. The rotation inside the active cavity 605 generates air pressure, which is discharged into the contraction tube 6072. After the air pressure flows into the receiving box 6071, it drives the impact tube 6074 to expand outward. When the impact tube 6074 expands and contracts outward, it drives the impact plate 6073 to impact the two ends of the drive bridge platform. By setting this component, when performing a strength test on the surface of the drive bridge platform, the applied pressure can be applied to the two ends of the drive bridge platform to apply pressure, allowing the two ends of the drive bridge platform to transmit pressure to the surface of the platform body for testing.

[0037] Example 3: Distinguishing features from Example 1: such as Figures 6-7 The protective mechanism 7 includes a connecting block 701, which is fixedly connected to the bottom of the inner wall of the placement groove 2. A connecting column 707 is slidably connected to the bottom of the inner wall of the connecting block 701. A placement plate 704 is fixedly connected to the end of the connecting column 707 away from the connecting block 701. A pressure chamber 702 is fixedly connected to the surface of the connecting column 707. The end of the pressure chamber 702 away from the connecting block 701 is fixedly connected to the surface of the placement plate 704. Protective pads 705 are rotatably connected to both sides of the inner wall of the placement plate 704 through a rotating shaft. A semi-circular groove is opened on the surface of the protective pad 705. When the protective pad 705 contacts the platform body, it can clamp and protect the platform body through the surface of the protective pad 705. Compression components 706 are provided on both sides of the placement plate 704.

[0038] The compression assembly 706 includes a receiving tube 7061, one end of which is fixedly connected to both sides of the placement plate 704. When subjected to pressure, the receiving tube 7061 expands and contracts inwards, injecting compressed gas into its interior. The cavity connected to the placement plate 704 discharges the compressed gas into the pressure chamber 702. A limiting ring 7062 is fixedly connected to the end of the receiving tube 7061 away from the placement plate 704. A covering ring 7066 is fixedly connected to the end of the limiting ring 7062 away from the placement plate 704. The inner wall of the limiting ring 7062... A push block 7063 is slidably connected, and a gripping clamp 7064 is slidably connected to the inner wall of the push block 7063. A compression strip 7065 is fixedly connected to the surface of the push block 7063. The compression strip 7065 is made of a stretchable material. When one end is subjected to pressure, it will bend and stretch inward. The greater the degree of bending, the stronger the pressure it generates inside the receiving tube 7061, which in turn makes the air pressure inside the receiving tube 7061 greater. This makes the end of the compression strip 7065 away from the push block 7063 fixedly connected to the inner wall of the limiting ring 7062.

[0039] The working method of this embodiment is as follows: First, the drive axle frame body is inserted into the limiting ring 7062. Then, the covering rings 7066 at both ends of the limiting ring 7062 are adsorbed and connected, thereby clamping the drive axle frame body inside the limiting ring 7062. When the frame body is subjected to a strength test, it will swing left and right. The resulting shaking will generate pressure inside the receiving tube 7061, causing the compressed gas inside the receiving tube 7061 to be discharged outward into the pushing block 7063. The compressed gas will squeeze the gripping clamp 7064 out from inside the pushing block 7063. By clamping the gripping clamp 7064 with the surface of the frame, different models of drive axle bodies can be clamped and fixed. When the drive axle frame swings left and right inside the limiting ring 7062, it will generate pressure on the gripping clamp 7064, causing the gripping clamp 7064 to slide on the inner wall of the limiting ring 7062. During the sliding process, it will exert pressure on the compressed gas. The compression bar 7065 is squeezed, causing it to bend inward and exert pressure on the inside of the receiving tube 7061. The higher the strength test of the test bench body, the deeper the compression bar 7065 bends, and the greater the pressure on the inside of the receiving tube 7061. This results in a higher amount of air pressure discharged from the receiving tube 7061. When the air pressure flowing into the pressure chamber 702 from the receiving tube 7061 reaches a certain level, the air pressure will cause the impact ring 703 to slide on the surface of the pressure chamber 702, which means that the test strength of the test bench body has reached its maximum value. When the impact ring 703 slides to the surface of the placement plate 704, it will impact the inside of the placement plate 704, causing the protective pad 705 to pop out from the inner wall of the placement plate 704 to buffer and protect the drive axle test bench body, preventing the drive axle test bench body from bending due to excessive strength test.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An auxiliary fastening device for bench testing of a balanced suspension drive axle assembly, comprising a base plate (1), connecting frames (3) fixedly connected to both sides of the base plate (1), connecting grooves (4) provided on both sides of the inner wall of the connecting frames (3), a placement groove (2) provided on the surface of the base plate (1), a clamping mechanism (6) provided at the groove hole on the surface of the connecting frames (3), and a protective mechanism (7) provided at the bottom of the inner wall of the placement groove (2), characterized in that, Also includes: The contact mechanism (5) includes a storage block (501) that is slidably connected to both sides of the inner wall of the connecting groove (4) via a slider. A folding ring (502) is fixedly connected to the inner wall of the storage block (501). A pneumatic pipe (503) is fixedly connected to both sides of the inner wall of the storage block (501). A contact plate (504) is fixedly connected to one end of the folding ring (502) away from the inner wall of the storage block (501). A buffer pad (505) is slidably connected to the bottom of the contact plate (504). A transmission component (506) is provided on the surface of the contact plate (504). The transfer assembly (506) includes an inlet plate (5061) fixedly connected to the surface of the contact plate (504), a tightening bladder (5064) fixedly connected to both sides of the inlet plate (5061), a contact foot (5065) fixedly connected to the inner wall of the tightening bladder (5064), a snap-fit ​​clip (5062) fixedly connected to the bottom of the inner wall of the inlet plate (5061), and an impact plate (5063) slidably connected to the bottom of the inner wall of the snap-fit ​​clip (5062). The clamping mechanism (6) includes a side ring (601), which is fixedly connected to the surface slot of the connecting frame (3). A telescopic ring (602) is slidably connected in the slot at one end of the side ring (601), and a compression tube (603) is fixedly connected in the slot at the end of the side ring (601) away from the telescopic ring (602). A pressure pad (604) is slidably connected to the inner wall of the side ring (601), and a movable cavity (605) is fixedly connected to the surface of the pressure pad (604). Push arms (606) are rotatably connected to both sides of the inner wall of the movable cavity (605) through a rotating shaft. An auxiliary component (607) is provided on the surface of the side ring (601). The auxiliary component (607) includes a shrink tube (6072), which is fixedly connected to the surface of the side ring (601). The surface of the shrink tube (6072) is rotatably connected to the receiving box (6071) via a rotating shaft. An impact tube (6074) is fixedly connected to the bottom of the inner wall of the receiving box (6071). An impact plate (6073) is fixedly connected to one end of the impact tube (6074) away from the inner wall of the receiving box (6071). One end of the impact plate (6073) is rotatably connected to both sides of the inner wall of the receiving box (6071) via a rotating shaft. The protective mechanism (7) includes a connecting block (701), which is fixedly connected to the bottom of the inner wall of the placement groove (2). A connecting column (707) is slidably connected to the bottom of the inner wall of the connecting block (701). A placement plate (704) is fixedly connected to one end of the connecting column (707) away from the connecting block (701). A pressure chamber (702) is fixedly connected to the surface of the connecting column (707). One end of the pressure chamber (702) away from the connecting block (701) is fixedly connected to the surface of the placement plate (704). Protective pads (705) are rotatably connected to both sides of the inner wall of the placement plate (704) through a rotating shaft. Compression components (706) are provided on both sides of the placement plate (704).

2. The auxiliary fastening device for bench testing of a balanced suspension drive axle assembly according to claim 1, characterized in that: The compression assembly (706) includes a receiving tube (7061), one end of which is fixedly connected to both sides of the placement plate (704). A limiting ring (7062) is fixedly connected to the end of the receiving tube (7061) away from the placement plate (704). A covering ring (7066) is fixedly connected to the end of the limiting ring (7062) away from the placement plate (704). A pushing block (7063) is slidably connected to the inner wall of the limiting ring (7062). A gripping clamp (7064) is slidably connected to the inner wall of the pushing block (7063). A compression strip (7065) is fixedly connected to the surface of the pushing block (7063). The end of the compression strip (7065) away from the pushing block (7063) is fixedly connected to the inner wall of the limiting ring (7062).

3. The auxiliary fastening device for bench testing of a balanced suspension drive axle assembly according to claim 2, characterized in that: The number of the limiting rings (7062) is set to two, and the two limiting rings (7062) are symmetrically installed at one end of the receiving tube (7061) with the center line of the placement plate (704) as the axis of symmetry.

4. The auxiliary fastening device for bench testing of a balanced suspension drive axle assembly according to claim 1, characterized in that: The impact plate (6073) is symmetrically installed on the inner wall of the receiving box (6071) with the transverse center line of the receiving box (6071) as the axis of symmetry.

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