Flexible gooseneck structure for electric drive trailer

Abstract

The invention relates to the technical field of electric vehicles, in particular to a flexible gooseneck structure for an electric drive trailer, which comprises two adapter plates, a flexible steel wire component is arranged between the two adapter plates, one of the adapter plates is connected with an adapter, the adapter is connected with a quick-release connector used for being connected with a back belt of a traction person, and the quick-release connector is connected with the back belt of the traction person. The other adapter plate is used for being connected with an electric drive trailer; the flexible steel wire assembly comprises two connecting pieces which are symmetrically distributed, each connecting piece is connected with the corresponding adapter plate, and a steel wire rope and a flexible sleeve arranged on the outer side of the steel wire rope in a sleeving mode are arranged between the two connecting pieces. The flexible gooseneck structure can solve the problems that an electric drive trailer is prone to damage due to rigid connection in a violent vibration working environment and a flexible rubber connection structure is broken due to insufficient strength or poor weather resistance, and the flexible gooseneck structure can be bent and twisted at any degree of freedom. The problem of asynchronous buffering caused by the fact that the speed and the steering cannot be completely consistent when a traction person and an electric drive trailer are dragged to advance is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicles, and particularly relates to a flexible gooseneck structure for an electric drive trailer. Background Art

[0002] In the prior art, an electric drive trailer with a traction following function needs to be connected to a towing person through a flexible gooseneck. Since the speed and traveling direction of the electric drive trailer cannot be completely consistent with those of the towing person during the traction following process, the flexible gooseneck needs to play an asynchronous buffering role during traveling. Currently, flexible goosenecks for domestic electric drive trailers all adopt rigid connections or flexible rubber connections. In rigid connections, various bearings are used to cooperate to achieve multi-degree-of-freedom rotation. Since rigid connections do not have a buffering function, the severe vibrations generated when the vehicle works in a harsh environment easily damage various components such as bearings, shorten the service life, and affect the comfort of the towing person; flexible rubber materials can effectively solve the problem of asynchronous buffering between the vehicle and the person, but rubber also has problems such as insufficient strength and poor weather resistance, affecting the reliability of the connection structure. Summary of the Invention

[0003] Aiming at the foregoing defects existing in the existing flexible gooseneck structure, the present invention proposes a flexible gooseneck structure for an electric drive trailer. This flexible gooseneck structure can effectively solve the problem that the rigid connection of the electric drive trailer is easily damaged in a severely vibrating working environment, and this flexible gooseneck structure has high strength and can effectively solve the fracture problem caused by insufficient strength or poor weather resistance of the flexible rubber connection structure. In addition, this flexible gooseneck structure can achieve bending and torsion of any degree of freedom, and can effectively solve the asynchronous buffering problem caused by the inability to achieve complete consistency in speed and steering when the towing person and the electric drive trailer are towing and traveling.

[0004] To achieve the foregoing objectives, the technical solution adopted by the present invention is: a flexible gooseneck structure for an electric drive trailer, including: two adapter plates, a flexible wire assembly is provided between the two adapter plates, one of the adapter plates is connected to a swivel joint, the swivel joint is connected to a quick-release joint for connecting to the back belt of the towing person, and the other adapter plate is used for connecting to the electric drive trailer; the flexible wire assembly includes two symmetrically distributed connectors, each connector is connected to the corresponding adapter plate, a steel wire rope and a flexible sleeve sleeved outside the steel wire rope are arranged between the two connectors.

[0005] In one embodiment, the connector is a riveted bolt, and a riveting blind hole for riveting with the end of the steel wire rope is arranged at one end of the riveted bolt, and the other end of the riveted bolt passes through a through hole at the center position of the adapter plate and is fastened with a nut. In one embodiment, a step is provided on the riveted bolt, and inwardly turned edges are arranged at both ends of the flexible sleeve. When the flexible sleeve is sleeved outside the steel wire rope, the inwardly turned edges contact the step.

[0006] In one embodiment, the outer wall surface of the connection head of the quick-release joint is set as a guiding conical surface.

[0007] In one embodiment, the adapter is a bent structure.

[0008] In one embodiment, the adapter is provided with a flange surface, the quick-release connector is provided with a first flange plate, and the first flange plate and the flange surface are connected by bolts.

[0009] In one embodiment, the adapter is provided with a second flange, and a flange hole is provided on the outer edge of the adapter plate. The second flange and the flange hole are connected by bolts and nuts.

[0010] The flexible gooseneck structure for an electric-drive trailer of the present invention can achieve the following beneficial effects: (1) The flexible gooseneck adopts a structure that combines steel wire rope and flexible sleeve, which has a good buffering effect. It can solve the problem that the electric drive trailer is easily damaged due to the rigid connection in a high-frequency vibration working environment. At the same time, it can withstand bending and torsion with any degree of freedom, effectively solving the problem of asynchronous travel difficulties caused by the inability to achieve completely consistent speed when the traction equipment or traction personnel and the electric drive trailer are linked together; (2) The flexible gooseneck uses steel wire rope, which has high strength and can effectively solve the problem of insufficient strength of flexible rubber; (3) The flexible gooseneck adopts steel wire rope, which has strong weather resistance and can effectively solve the problem of flexible rubber aging; (4) The adapter has a certain curvature, which makes the connection between people and vehicles more ergonomic.

[0011] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an exploded schematic diagram of a flexible gooseneck structure for an electric-drive trailer according to the present invention; Figure 2 yes Figure 1 Exploded view of the flexible steel wire assembly.

[0013] Reference numerals 1-quick-release connector, 101-connector, 1011-quick-release through hole, 102-first flange, 2-adapter, 3-adapter plate, 4-flexible steel wire assembly, 401-rivet bolt, 4011-step, 402-flexible sleeve, 4021-inverted edge, 403-wire rope. DETAILED DESCRIPTION

[0014] Aspects and exemplary embodiments of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only provided to better understand the present invention by showing examples of the present invention. In the drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessarily obscuring the present invention. The features, structures, or characteristics described hereinafter may be combined in any suitable manner in one or more embodiments. In addition, the terms "first or I", "second or II", "third or III", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0015] The orientation terms appearing in the following description are all the directions shown in the drawings and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "set", "installed", "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] Please refer to Figure 1 and Figure 2 , a flexible gooseneck structure for an electric drive trailer in this embodiment, includes a quick-release joint 1, two adapter plates 3, and a flexible wire assembly 4. The quick-release joint is used for quickly and detachably connecting with a waistband carried by a towing person. A flexible wire assembly 4 is connected between the two adapter plates. One of the adapter plates 3 is connected to the quick-release joint 1 through a swivel joint 2, and the other adapter plate 3 is used for connecting with the electric drive trailer.

[0017] In this embodiment, a quick-release through hole 1011 for the pin shaft to pass through is provided through the connecting head 101 of the quick-release joint. After the connecting head is clamped into the base on the waistband, it is connected by a pin shaft. Further, considering strength and wear resistance, the quick-release joint is made of alloy steel material. Furthermore, the outer wall surface of the connecting head 101 is designed as a guiding conical surface, which can further improve the connection efficiency between the connecting head and the base.

[0018] In this embodiment, please refer to Figure 2, the flexible wire assembly 4 includes two symmetrically distributed connectors. One connector is used to connect to the back belt of the towing personnel through the corresponding adapter plate 3 and adapter joint 2, and the other connector is used to connect to the electric drive trailer through the corresponding other adapter plate 3. A steel wire rope 403 and a flexible sleeve 402 sleeved outside the steel wire rope are arranged between the two connectors. The flexible sleeve can be made of flexible materials such as rubber and silica gel. With the above design, the flexible wire assembly composed of the steel wire rope and the flexible sleeve is not a rigid structure, which can avoid the phenomenon that the electric drive trailer is easily damaged due to rigid connection in a severely vibrating working environment. Moreover, the flexible wire assembly has high strength and environmental adaptability, which can effectively solve the fracture problem caused by insufficient strength or poor weather resistance of the existing flexible rubber connection structure. At the same time, the flexible wire assembly has good toughness and can be bent in any direction to achieve bending and torsion in any degree of freedom, which can effectively solve the asynchronous buffering problem caused by the inability to achieve exactly the same speed and steering when the towing personnel and the electric drive trailer are towing and moving forward.

[0019] Specifically, in this embodiment, the connector adopts a riveting bolt 401. One end of the riveting bolt is provided with a riveting blind hole. After placing the end of the steel wire rope in the aforementioned riveting blind hole, it is riveted by a riveting device to achieve a firm connection between the riveting bolt and the steel wire rope. The other end of the riveting bolt passes through the through hole at the center position of the adapter plate and is fastened with a nut to achieve the connection between the riveting bolt and the adapter plate. Further, a step 4011 is provided on the riveting bolt, and inward-turned edges 4021 are provided at both ends of the flexible sleeve 402. When the flexible sleeve is sleeved outside the steel wire rope, the inward-turned edge 4021 contacts the step 4011. With the blocking cooperation between the inward-turned edge and the step, the flexible sleeve can be quickly sleeved outside the steel wire rope, and the flexible sleeve will not easily shake and move after the assembly is completed. At the same time, the contact and cooperation between the inward-turned edge and the step can seal the steel wire rope covered by the flexible sleeve and the two riveting parts, improve the environmental adaptability, and extend the service life of the flexible wire assembly.

[0020] In this embodiment, the adapter joint 2 is of a bent structure, taking Figure 1 as an example. With the adapter joint having a certain curvature, the connection head 101 of the quick-release joint is lower than the adapter plate 3, which is more ergonomic when connecting to the towing personnel. Further, considering weight reduction, the adapter joint is made of aluminum alloy.

[0021] In this embodiment, a flange surface is provided on the left side of the adapter joint 2, and a second flange plate is provided on the right side thereof. A first flange plate 102 is provided on the right side of the quick-release joint. Flange holes are provided on the outer edge of the adapter plate. The first flange plate and the flange surface are connected by bolts, and the second flange plate and the flange holes are connected by bolts and nuts to achieve a stable connection of the quick-release joint, the adapter joint, and the adapter plate. In other embodiments of the present invention, the connection head of the quick-release joint can adopt other existing types of detachable structures (such as spring pins) to connect to the base on the belt.

[0022] In other embodiments of the present invention, elastic cantilevers with hooks may be symmetrically arranged on both sides of the connecting member. After the elastic cantilevers pass through the through holes at the central positions of the adapter plates, the hooks form a blocking fit with the wall surface of the adapter plate facing away from the wire rope to limit the separation between the connecting member and the adapter plate. Then, the hooks are clamped between the adapter plate and the adapter head by means of the cooperation of the second flange, the flange holes, the bolts and the nuts.

[0023] In other embodiments of the present invention, the step on the riveting bolt and the inwardly turned edge structure at the end of the flexible sleeve can be omitted.

[0024] As mentioned above, only the preferred embodiments of the present invention are described. Any person skilled in the relevant art, without departing from the scope of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A flexible gooseneck structure for an electric drive trailer, characterized in that, It includes two adapter plates (3), with a flexible wire assembly (4) arranged between the two adapter plates. One of the adapter plates is connected to a swivel joint, and the swivel joint is connected to a quick-release joint for connecting to the back belt of the towing personnel, while the other adapter plate is used for connecting to an electric drive trailer; the flexible wire assembly includes two symmetrically distributed connectors, each connector is connected to the corresponding adapter plate (3), and a steel wire rope (403) and a flexible sleeve (402) sleeved outside the steel wire rope are arranged between the two connectors.

2. The flexible gooseneck structure for an electric drive trailer according to claim 1, characterized in that, The connector is a riveting bolt (401), and one end of the riveting bolt is provided with a riveting blind hole for riveting with the end of the steel wire rope. The other end of the riveting bolt passes through the through hole at the center of the adapter plate and is fastened with a nut.

3. The flexible gooseneck structure for an electric drive trailer according to claim 2, characterized in that, The riveting bolt is provided with a step (4011), and both ends of the flexible sleeve (402) are provided with inward flanges (4021). When the flexible sleeve is sleeved outside the steel wire rope, the inward flange (4021) contacts the step (4011).

4. A flexible gooseneck structure for an electric drive trailer according to claim 1, characterized in that, The outer wall surface of the connection head (101) of the quick-release joint is set as a guiding conical surface.

5. A flexible gooseneck structure for an electric drive trailer according to claim 1, characterized in that, The swivel joint is of a bent structure.

6. The flexible gooseneck structure for an electric drive trailer according to claim 5, characterized in that, The swivel joint is provided with a flange surface, the quick-release joint is provided with a first flange plate (102), and the first flange plate and the flange surface are connected by bolts.

7. The flexible gooseneck structure for an electric drive trailer according to claim 6, characterized in that, The swivel joint is provided with a second flange plate, the outer edge of the adapter plate is provided with flange holes, and the second flange plate and the flange holes are connected by bolts and nuts.

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