Motor wire harness damping support device and new energy heavy truck

Abstract

The utility model discloses a motor wire harness damping support device and new energy heavy truck, include: high stiffness area, it includes intermediate pole, and intermediate pole is hollow structure inside, the both ends of intermediate pole are installed for the first clamping piece of fixed in the vehicle body, low stiffness area is equipped with two and is located high stiffness area's both ends respectively, and low stiffness area includes side pole, and side pole is hollow structure inside, the one end of side pole is installed with second clamping piece close to intermediate pole, and the lateral surface of second clamping piece is fixed with elastic bracket, and elastic bracket is close to the outer surface of side pole, the first clamping piece and second clamping piece all are provided with tertiary anti -impact piece, and elastic connecting piece installs in the connecting place of intermediate pole and side pole, is used to realize the elastic transition of high stiffness area and low stiffness area. The utility model discloses through the synergic combination of high stiffness area, low stiffness area and elastic connecting piece, and the device whole can realize the double -effect of rigid support, flexible buffering.

Description

Technical Field

[0001] This utility model relates to a motor wiring harness vibration damping support device and a new energy heavy truck, belonging to the field of wiring harness support technology. Background Technology

[0002] During the operation of new energy heavy-duty trucks, low-voltage wiring harnesses, as critical signal and power transmission components, are subject to prolonged exposure to severe vibration. The high-frequency vibrations generated by the motor during truck operation continuously exert impact and tensile forces on the low-voltage wiring harness, easily leading to damage. Existing low-voltage wiring harness fixing solutions have significant drawbacks: First, while rigid supports provide strong support, they cannot buffer vibration energy, causing the connection between the wiring harness and the support to loosen, wear, or even break or become unreliable due to continuous impact. Second, elastic supports with a single stiffness are difficult to adapt to the varying vibration intensities of different areas of the heavy-duty truck. In areas of high vibration, insufficient support stiffness causes excessive swaying of the wiring harness; in areas of low vibration, excessive stiffness results in a loss of buffering effect, neither of which effectively protects the wiring harness.

[0003] Furthermore, the clamping structure of traditional brackets has limited impact resistance and cannot effectively disperse impact loads of varying intensities. Under long-term vibration conditions, the low-voltage wiring harness exhibits poor stability, significantly increasing the risk of failure and maintenance costs, making it difficult to meet the high reliability requirements of low-voltage wiring harnesses for new energy heavy-duty trucks. Summary of the Invention

[0004] To address the problems existing in the prior art, this utility model provides a motor wiring harness vibration damping support device and a new energy heavy truck.

[0005] To achieve the above objectives, this utility model employs a motor wiring harness vibration damping support device, comprising:

[0006] The high-rigidity area includes a central rod, which has an internally hollow structure for threading and installing low-voltage wiring harnesses; both ends of the central rod are equipped with first clamping members for fixing to the vehicle body.

[0007] Two low-stiffness zones are provided, each located at one end of a high-stiffness zone. Each low-stiffness zone includes a side rod with an internal hollow structure. The hollow channel of the side rod is adapted to the hollow channel of the intermediate rod. The side rod and the intermediate rod are used together to install low-voltage wiring harnesses. A second clamping member for fixing to the vehicle body is installed at one end of the side rod near the intermediate rod. An elastic bracket is fixed to the side surface of the second clamping member, and the elastic bracket is in close contact with the outer surface of the side rod. Both the first and second clamping members are provided with three levels of impact-resistant components.

[0008] The elastic connector is installed at the connection between the middle rod and the side rod to achieve an elastic transition between the high-stiffness area and the low-stiffness area.

[0009] As an improvement, the middle rod and the side rod have the same structure, and both the middle rod and the side rod include an aluminum base rod, a silicone rubber buffer tube and a copper-nickel alloy conductive layer arranged sequentially from the inside to the outside. The aluminum base rod, the silicone rubber buffer tube and the copper-nickel alloy conductive layer are made by a composite lamination process. The aluminum base rod has an installation cavity inside, which is used to install low-voltage wire harnesses.

[0010] As an improvement, the outer surface of the aluminum-based rod is provided with a ceramic coating, the thickness of which is 10-30 μm.

[0011] As an improvement, the elastic connector includes a connecting spring and two sleeves, the two sleeves being welded to both ends of the connecting spring, and the two sleeves being fitted onto the ends of the intermediate rod and the side rod, respectively.

[0012] As an improvement, the first clamping member and the second clamping member have the same structure, and both the first clamping member and the second clamping member are composed of a clamping member and a three-level impact-resistant member.

[0013] As an improvement, the clamping member includes a lower clamping plate, an upper clamping plate, and locking screws. Both ends of the lower clamping plate and the upper clamping plate are locked and fixed by locking screws, and the end of the elastic bracket is welded to the surface of the lower clamping plate of the second clamping member.

[0014] As an improvement, the third-level impact-resistant component includes a first impact-resistant component, which is a buffer sleeve disposed between the lower clamping plate and the upper clamping plate, and is used to be sleeved on the outside of the middle rod or the side rod.

[0015] As an improvement, the third-level impact-resistant component includes a second impact-resistant component, which includes a base plate, an electric push rod, and a return spring. The base plate is located below the lower clamping plate, and the electric push rod is located above the lower clamping plate. The telescopic end of the electric push rod passes through a hole opened at the end of the lower clamping plate and is fixedly connected to the base plate. The return spring is sleeved on the telescopic end of the electric push rod, and both ends of the return spring are welded and fixed to the surfaces of the lower clamping plate and the base plate, respectively.

[0016] As an improvement, the third-level impact-resistant component includes a third impact-resistant component, which is a support block integrally formed on the surface of the base plate, and the support block is used to support the lower clamping plate when the electric push rod retracts.

[0017] In a second aspect, this utility model also provides a new energy heavy truck, on which the aforementioned motor wiring harness vibration damping support device is installed.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] (1) Variable stiffness adaptation, taking into account both support and buffering. Through the coordinated combination of high stiffness zone, low stiffness zone and elastic connector, the device can achieve the dual effect of rigid support and flexible buffering. The middle rod in the high stiffness zone can provide stable foundation support to ensure that the overall structure of the device does not loosen when the heavy truck vibrates violently. Its internal hollow structure can also provide a regular channel for the low-voltage wiring harness. The side rods in the low stiffness zone cooperate with the elastic connector to not only greatly reduce the direct impact of vibration on the low-voltage wiring harness through flexible buffering, but also realize the connection and installation of the wiring harness through the hollow channel adapted to the middle rod, avoiding the additional pulling of the wiring harness due to channel misalignment.

[0020] (2) Multi-level elastic support enhances vibration absorption. The elastic bracket on the side surface of the second clamping member is in close contact with the outer surface of the side rod. On the one hand, it provides additional elastic support for the side rod to offset the deformation of the side rod caused by vibration. On the other hand, together with the elastic connector, it forms a dual elastic buffering mechanism of connector buffering and bracket auxiliary vibration absorption. When the side rod is affected by vibration and causes displacement, the elastic bracket can absorb part of the vibration energy through its own elastic deformation, further weakening the vibration intensity transmitted to the internal wire harness and improving the overall vibration reduction effect.

[0021] (3) Three-level impact resistance, load dispersion to protect the wire harness. The three-level impact resistance components on the first and second clamping components can achieve graded buffering and load dispersion for impacts of different intensities. When encountering slight vibration, the first impact resistance component can absorb energy; when facing medium-intensity impact, the second impact resistance component further disperses the load; if a strong impact occurs, the three-level impact resistance components work together to reduce stress concentration and effectively prevent the low-voltage wire harness from being damaged by instantaneous impact.

[0022] (4) Improved overall reliability. Relying on the synergistic effect of the above structures, the device of this utility model not only achieves neat installation of the wire harness through the hollow channel adapted by the middle rod and side rod, reducing friction and wear between the wire harness and external components, but also significantly reduces the risk of wire harness loosening and breakage through variable stiffness support, multi-level vibration absorption and graded impact resistance; it can reduce the probability of heavy truck downtime caused by wire harness failure, ensure the safe and stable operation of new energy heavy trucks, and reduce the later maintenance cost, fully meeting the high reliability requirements of key components of new energy heavy trucks. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model in one state;

[0025] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0026] Figure 3 This is a schematic diagram of the second state structure of this utility model;

[0027] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0028] Figure 5 This is a schematic diagram of the disassembled structure of the parts of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the first clamping member of this utility model;

[0030] Figure 7 This is a schematic diagram of the structure of the intermediate rod of this utility model;

[0031] Reference numerals: 1. Intermediate rod; 11. Aluminum-based rod; 12. Silicone rubber buffer tube; 13. Copper-nickel alloy conductive layer; 14. Mounting cavity; 2. Side rod; 3. Elastic connector; 31. Sleeve; 32. Connecting spring; 4. First clamping component; 41. Lower clamping plate; 42. Upper clamping plate; 43. Locking screw; 44. Buffer sleeve; 45. Base plate; 46. Electric push rod; 47. Return spring; 48. Support block; 5. Second clamping component; 6. Elastic bracket. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this application will be described in detail below through specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] like Figures 1-7As shown, a motor wiring harness vibration damping support device includes a high stiffness zone, a low stiffness zone, and an elastic connector 3. The core component of the high stiffness zone is a central rod 1, which has an internal hollow structure for threading and installing low-voltage wiring harnesses. The two ends of the central rod 1 are detachably equipped with first clamping parts 4, which are used to fix and connect to the heavy truck body, providing basic support stiffness for the entire support device and ensuring that the device maintains overall structural stability in the heavy truck vibration environment.

[0035] Two low-stiffness zones are provided, symmetrically distributed at both ends of the high-stiffness zone, forming a central support and lateral buffer layout to meet the installation requirements of low-voltage wiring harnesses for heavy-duty trucks. The core component of each low-stiffness zone is a side rod 2, which has an internal hollow structure. The hollow channel of the side rod 2 is compatible with the hollow channel of the intermediate rod 1. The side rod 2 and the intermediate rod 1 are used together to install the low-voltage wiring harness. A second clamping member 5 is installed at the end of the side rod 2 near the intermediate rod 1. The second clamping member 5 is installed in the same way as the first clamping member 4 and is also used to fix it to the heavy-duty truck body. An elastic bracket 6 is fixed to the side surface of the second clamping member 5 by welding or integral molding. The elastic bracket 6 is designed with an arc-shaped structure and fits tightly against the outer surface of the side rod 2, which can provide auxiliary elastic support for the side rod 2 and enhance its resistance to deformation. In addition, the first clamping member 4 and the second clamping member 5 are both integrated with three-level impact-resistant components, which can achieve graded buffering for impact loads of different intensities.

[0036] The elastic connector 3 is installed between the corresponding ends of the intermediate rod 1 and the side rod 2, realizing an elastic transition between the high-stiffness zone and the low-stiffness zone, weakening the transmission of vibration between the two zones, and avoiding the concentration of vibration energy that could lead to component damage or impact on the internal wiring harness. This invention utilizes the synergistic combination of the high-stiffness zone, the low-stiffness zone, and the elastic connector 3. The elastic connector 3 connects the intermediate rod 1 (high-stiffness zone) and the side rod 2 (low-stiffness zone) into a whole. The intermediate rod 1 is fixed to the heavy truck body via the first clamp 4, and the side rod 2 via the second clamp 5, ensuring the structural stability of the device after installation. The elastic bracket 6 on the second clamp 5 provides elastic constraint to the side rod 2. Combined with the three-level impact-resistant components on the first clamp 4 and the second clamp 5, this not only disperses the impact load borne by the low-voltage wiring harness in stages but also prevents misalignment and pulling of the wiring harness through the hollow channel that fits between the intermediate rod 1 and the side rod 2. This significantly improves the working stability of the low-voltage wiring harness in long-term vibration environments and reduces the risk of wiring harness loosening, wear, and breakage.

[0037] In some embodiments, such as Figure 7As shown, the intermediate rod 1 and the side rod 2 have identical structures, both made using a three-layer composite lamination process. Their structures, from the inside out, consist of an aluminum base rod 11, a silicone rubber buffer tube 12, and a copper-nickel alloy conductive layer 13. The aluminum base rod 11 has an internal mounting cavity 14 for installing low-voltage wire harnesses, achieving neat storage and protection of the harnesses. The outer surface of the aluminum base rod 11 is coated with a ceramic coating with a thickness of 10-30 μm, effectively improving its wear resistance and corrosion resistance, and extending its service life. As the core supporting component of the rod, the aluminum base rod 11 provides stable main support rigidity for the intermediate rod 1 and the side rod 2, ensuring that the rod is not easily deformed in a vibration environment and preventing compression of the low-voltage wire harnesses within the internal mounting cavity 14. The silicone rubber buffer tube 12 is designed to be 0.5mm thick, which can absorb some vibration energy through its own elastic deformation, playing a preliminary vibration reduction role and reducing the intensity of vibration transmitted to the aluminum base rod 11 and internal wiring harness. The copper-nickel alloy conductive layer 13 is 0.1mm thick and has good conductivity, which can promptly discharge static electricity generated on the surface of the rod, avoiding static electricity accumulation that could interfere with or damage the low-voltage wiring harness. This three-layer composite structure ensures support strength through the aluminum base rod 11, enhances vibration reduction performance through the silicone rubber buffer tube 12, solves static electricity and electromagnetic interference problems through the copper-nickel alloy conductive layer 13, and enables reliable installation of the low-voltage wiring harness through the mounting cavity 14 inside the aluminum base rod 11. It is fully adaptable to the complex electrical working environment and wiring harness vibration reduction and protection requirements of new energy heavy trucks.

[0038] In some embodiments, such as Figure 2 , Figure 4 As shown, the elastic connector 3 consists of a connecting spring 32 and two sleeves 31. The two sleeves 31 (e.g., metal sleeves) are coaxially welded to both ends of the connecting spring 32, and the two sleeves 31 are adapted to the ends of the intermediate rod 1 and the side rod 2. They can be fitted onto the ends of the intermediate rod 1 and the side rod 2 with a clearance fit to meet the requirements of slight displacement during vibration; or they can be detached by threaded connection, which facilitates replacement or repair of the elastic connector 3 during later maintenance. In this embodiment, the function of the sleeves 31 is to achieve a reliable connection between the elastic connector 3 and the intermediate rod 1 and the side rod 2, ensuring the structural stability of the connection. The connecting spring 32 can buffer the vibration transmission between the high-stiffness area and the low-stiffness area through its own expansion and contraction deformation, so that the stable support of the high-stiffness area and the flexible buffer of the low-stiffness area form a smooth transition, effectively avoiding stress concentration at the connection between the two areas, thereby reducing the indirect impact of stress concentration on the low-voltage wiring harness in the internal mounting cavity 14 of the intermediate rod 1 and the side rod 2, and further improving the vibration reduction and protection effect of the entire device.

[0039] In some embodiments, such as Figure 2 , Figure 4 and Figure 6 As shown, the first clamping member 4 and the second clamping member 5 have the same overall structure, both consisting of a clamping member and a three-level impact-resistant member. They are used to fix the middle rod 1, the side rod 2 and the heavy truck body, and can also buffer vibration through the three-level impact-resistant member to protect the low-voltage wire harness in the mounting cavity 14 inside the rod body.

[0040] The clamping component includes a lower clamping plate 41, an upper clamping plate 42, and a locking screw 43. The opposing surfaces of the lower clamping plate 41 and the upper clamping plate 42 are each provided with an arc-shaped groove adapted to the intermediate rod 1 or the side rod 2 (the groove curvature matches the outer diameter of the rod to prevent deformation of the mounting cavity 14 due to compression during clamping). Both ends of the lower clamping plate 41 and the upper clamping plate 42 are provided with corresponding screw holes. The locking screw 43 passes through the screw holes to lock and fix the lower clamping plate 41 and the upper clamping plate 42, thereby achieving stable clamping of the intermediate rod 1 or the side rod 2 and ensuring that the rod does not shift or shake during vibration. The end of the elastic bracket 6 is welded to the surface of the lower clamping plate 41 of the second clamping component 5. Reinforcing ribs are provided at the weld to improve the connection strength between the elastic bracket 6 and the lower clamping plate 41, preventing cracking at the weld due to long-term vibration and ensuring the auxiliary support effect of the elastic bracket 6 on the side rod 2.

[0041] In some embodiments, such as Figure 6 As shown, the three-level impact-resistant component includes a first impact-resistant component, a second impact-resistant component, and a third impact-resistant component, with the specific structure as follows:

[0042] a. First impact-resistant component: The first impact-resistant component is a buffer rubber sleeve 44. The buffer rubber sleeve 44 is embedded in the arc-shaped groove of the lower clamping plate 41 and the upper clamping plate 42. The buffer rubber sleeve 44 located in the first clamping component 4 is sleeved on the outside of the middle rod 1, and the buffer rubber sleeve 44 located in the second clamping component 5 is sleeved on the outside of the side rod 2. The inner wall of the buffer rubber sleeve 44 is tightly attached to the surface of the rod (copper-nickel alloy conductive layer 13). It can absorb high-frequency micro-amplitude vibration through the elastic deformation of the buffer rubber sleeve 44, and avoid the rod from directly contacting the clamping plate and causing wear, thus indirectly protecting the low-voltage wire harness in the internal mounting cavity 14.

[0043] b. Second impact-resistant component: The second impact-resistant component includes a base plate 45, an electric push rod 46, and a return spring 47. The base plate 45 is horizontally positioned below the lower clamping plate 41 and is fixedly connected to the heavy truck body (e.g., with bolts), providing a stable mounting base for the entire clamping component. The electric push rod 46 is vertically positioned above the lower clamping plate 41. The fixed end of the electric push rod 46 is fixedly connected to the surface of the lower clamping plate 41, and the telescopic end of the electric push rod 46 passes through a guide hole (the guide hole is used to ensure linear movement of the telescopic end) and is fixed to the base plate 45. The return spring 47 is coaxially sleeved on the telescopic end of the electric push rod 46, and both ends of the return spring 47 are welded and fixed to the lower surface of the lower clamping plate 41 and the upper surface of the base plate 45, respectively, to ensure that the return spring 47 can deform synchronously with the displacement of the lower clamping plate 41 and buffer moderate-amplitude impacts in a timely manner.

[0044] c. Third impact-resistant component: The third impact-resistant component is a support block 48, which is integrally formed on the upper surface of the base plate 45. The top surface of the support block 48 matches the shape of the lower surface of the lower clamping plate 41, and there is a certain gap between them. This gap provides space for slight displacement of the lower clamping plate 41, avoiding excessive contact between the support block 48 and the lower clamping plate 41 under normal working conditions, thus affecting the buffering effect. It can also quickly contact the lower clamping plate 41 under extreme impact to form a rigid support.

[0045] In this embodiment, the three-level impact-resistant components achieve precise buffering of impacts of different intensities through graded synergistic effects. The specific working logic is as follows:

[0046] a. Responding to high-frequency, low-amplitude vibrations (Level 1 shock resistance)

[0047] When the heavy truck is in a stable driving state and only high-frequency micro-vibration occurs, the telescopic end of the electric push rod 46 retracts, causing the lower clamping plate 41 to move downward, so that the lower surface of the lower clamping plate 41 contacts the support block 48. At this time, the support block 48 provides support for the lower clamping plate 41, and only the buffer sleeve 44 plays a role. The buffer sleeve 44 absorbs the high-frequency micro-vibration energy through its own elastic deformation. Combined with the vibration reduction effect of the silicone rubber buffer tube 12 outside the side rod 2, it doubly weakens the intensity of vibration transmitted to the low-voltage wiring harness in the mounting cavity 14 inside the rod body, which is suitable for the stable driving conditions of the heavy truck.

[0048] b. Responding to moderate shocks (Level 2 shock resistance)

[0049] When a heavy truck passes over a speed bump or a slightly bumpy road surface, generating a moderate impact, the telescopic end of the electric push rod 46 extends, causing the lower clamping plate 41 to move upward, moving the lower clamping plate 41 away from the base plate 45 (wherein, the length of the electric push rod 46 is 2-10cm longer than the natural length of the return spring 47, ensuring that the return spring 47 can be in a deformable state); at this time, the return spring 47 can buffer the moderate impact energy through compression or stretching deformation, while the buffer sleeve 44 and the connecting spring 32 of the elastic connector 3 work together to absorb vibration, and the multiple vibration reduction mechanisms further weaken the impact, preventing the wiring harness from being misaligned and pulled due to the swaying of the rod;

[0050] c. Responding to extreme shocks (Level 3 shock resistance)

[0051] When a heavy truck encounters emergency braking or a severely bumpy road surface, resulting in an extreme impact, the displacement of the lower clamping plate 41 reaches the extension limit of the electric push rod 46. At this time, the upper surface of the lower clamping plate 41 contacts the housing of the electric push rod 46, or the lower surface of the lower clamping plate 41 contacts the support block 48. The rigid structure of the electric push rod 46 and the support block 48 together provide rigid support for the lower clamping plate 41. Combined with the deformation buffer of the buffer sleeve 44 and the tensile limit protection of the elastic connector 3, multiple impact barriers are formed to effectively resist extreme loads, prevent the rod body from deforming and squeezing the low-voltage wiring harness in the mounting cavity 14, and prevent the wiring harness from having insulation layer damage or conductor breakage.

[0052] Based on the aforementioned motor harness vibration damping support device, this utility model further provides a new energy heavy-duty truck. The low-voltage harness installation areas of this new energy heavy-duty truck (such as the area around the motor, the side of the chassis suspension, and other high-frequency vibration areas) are all fitted with the aforementioned motor harness vibration damping support device. Specifically, the device achieves stable assembly on the heavy-duty truck through the detachable connection (e.g., bolt locking) between the first clamping member 4, the second clamping member 5, and the base plate 45 to the corresponding fixing points on the heavy-duty truck body. The device, through the through-connection structure of the intermediate rod 1, the elastic connecting member 3, and the side rod 2, combined with the protection of the three-level impact-resistant components and the elastic bracket 6, forms a complete protection process for the low-voltage harness of the heavy-duty truck, including support, vibration damping, and impact resistance.

[0053] By integrating this motor harness vibration damping support device into new energy heavy-duty trucks, the impact of complex operating conditions such as high-frequency motor vibration and road bumps during heavy-duty truck operation on low-voltage harnesses can be effectively adapted. This significantly reduces the risk of low-voltage harnesses loosening, wear, and breakage caused by vibration, ensuring the stability of signal transmission and power distribution in heavy-duty trucks, reducing the frequency of heavy-duty truck downtime for maintenance due to harness failures, and extending the service life of harnesses through a regular mounting cavity and composite rod structure (middle rod, side rod). Ultimately, this improves the overall operational reliability of new energy heavy-duty trucks and meets the technical requirements of new energy heavy-duty trucks for high reliability and low maintenance costs of key components.

[0054] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

Claims

1. A vibration damping support device for motor wiring harnesses, characterized in that, include: The high-rigidity area includes an intermediate rod (1), which is an internally hollow structure used for installing low-voltage wire harnesses; The two ends of the intermediate rod (1) are equipped with first clamping parts (4) for fixing to the vehicle body; Two low-stiffness zones are provided, with each zone located at one end of a high-stiffness zone. Each low-stiffness zone includes a side rod (2), which has an internal hollow structure. The hollow channel of the side rod (2) is adapted to the hollow channel of the intermediate rod (1). The side rod (2) and the intermediate rod (1) are used together to install low-voltage wiring harnesses. A second clamping member (5) for fixing to the vehicle body is installed at one end of the side rod (2) near the intermediate rod (1). An elastic bracket (6) is fixed to the side surface of the second clamping member (5), and the elastic bracket (6) is in close contact with the outer surface of the side rod (2). Both the first clamping member (4) and the second clamping member (5) are provided with three-level impact-resistant components. The elastic connector (3) is installed at the connection between the middle rod (1) and the side rod (2) to achieve an elastic transition between the high stiffness zone and the low stiffness zone.

2. The motor wiring harness vibration damping support device according to claim 1, characterized in that, The intermediate rod (1) and the side rod (2) have the same structure, and both the intermediate rod (1) and the side rod (2) include an aluminum base rod (11), a silicone rubber buffer tube (12) and a copper-nickel alloy conductive layer (13) arranged sequentially from the inside to the outside. The aluminum base rod (11), the silicone rubber buffer tube (12) and the copper-nickel alloy conductive layer (13) are made by a composite lamination process. The aluminum base rod (11) has an installation cavity (14) inside, which is used to install low-voltage wire harnesses.

3. The motor wiring harness vibration damping support device according to claim 2, characterized in that, The outer surface of the aluminum-based rod (11) is provided with a ceramic coating, the thickness of which is 10-30 μm.

4. The motor wiring harness vibration damping support device according to claim 1, characterized in that, The elastic connector (3) includes a connecting spring (32) and two sleeves (31). The two sleeves (31) are respectively welded to both ends of the connecting spring (32) and respectively sleeved on the ends of the intermediate rod (1) and the side rod (2).

5. A motor wiring harness vibration damping support device according to claim 1, characterized in that, The first clamping member (4) and the second clamping member (5) have the same structure, and both the first clamping member (4) and the second clamping member (5) are composed of clamping members and three-level impact-resistant members.

6. The motor wiring harness vibration damping support device according to claim 5, characterized in that, The clamping member includes a lower clamping plate (41), an upper clamping plate (42), and a locking screw (43). Both ends of the lower clamping plate (41) and the upper clamping plate (42) are locked and fixed by the locking screw (43). The end of the elastic bracket (6) is welded to the surface of the lower clamping plate (41) of the second clamping member (5).

7. A motor wiring harness vibration damping support device according to claim 6, characterized in that, The three-level impact-resistant component includes a first impact-resistant component, which is a buffer sleeve (44). The buffer sleeve (44) is disposed between the lower clamping plate (41) and the upper clamping plate (42) and is used to be sleeved on the outside of the middle rod (1) or the side rod (2).

8. A motor wiring harness vibration damping support device according to claim 7, characterized in that, The third-level impact-resistant component includes a second impact-resistant component, which includes a base plate (45), an electric push rod (46), and a return spring (47). The base plate (45) is located below the lower clamping plate (41), and the electric push rod (46) is located above the lower clamping plate (41). The telescopic end of the electric push rod (46) passes through a hole opened at the end of the lower clamping plate (41) and is fixedly connected to the base plate (45). The return spring (47) is sleeved on the telescopic end of the electric push rod (46), and the two ends of the return spring (47) are respectively welded and fixed to the surfaces of the lower clamping plate (41) and the base plate (45).

9. A motor wiring harness vibration damping support device according to claim 8, characterized in that, The third-level impact-resistant component includes a third impact-resistant component, which is a support block (48). The support block (48) is integrally formed on the surface of the base plate (45), and the support block (48) is used to support the lower clamping plate (41) when the electric push rod (46) retracts at the telescopic end.

10. A new energy heavy-duty truck, characterized in that, The new energy heavy truck is equipped with a motor wiring harness vibration damping support device as described in any one of claims 1-9.

Images