A lifting and suspension device for the power shoe of a ground-powered electric vehicle

Abstract

The present invention discloses a lifting and suspension device for a power shoe of a ground-powered electric vehicle, comprising a four-bar linkage, wherein the upper end pivot of the four-bar linkage is connected to the vehicle chassis, and the lower end is connected to the power shoe; a push rod mechanism is fixed to the vehicle chassis, and a push rod of the push rod mechanism is directly opposite to the lateral pivot of the four-bar linkage to drive the lateral pivot to move to both sides; a limiting device, wherein the limiting device limits the position of the lateral pivot of the four-bar linkage, and when the power push rod retracts and disengages from the contact with the lateral pivot, the limiting device bears the gravity of the power shoe. The lifting and suspension device for the power shoe of a ground-powered electric vehicle provided by the present invention limits the lowest position of the lateral pivot of the four-bar linkage by setting the limiting device, so that when the four-bar linkage is lowered to the lowest state, the limiting device bears its gravity, and the push rod is no longer over-pressed, effectively avoiding damage to the push rod, and the limiting device has a simple structure, is not easy to be damaged, has low cost, and is relatively convenient to replace.

Description

Technical Field

[0001] The invention relates to the technical field of vehicles, and in particular to a lifting and suspension device for a power shoe of a ground-powered electric vehicle. Background Art

[0002] In the prior art, when the ground-powered electric vehicle does not need to receive electricity, the hydraulic power push rod drives the four-bar mechanism to lift the power shoe, so that the power shoe is separated from the ground power supply device; when power is needed, the hydraulic cylinder push rod is returned to its position, and the power shoe descends by its own weight until it contacts the ground power supply device. At this time, in order to alleviate and absorb the vibration and impact of the power shoe when it slides, the power push rod must stop at the limit position. In this way, the power push rod mechanism still bears a large force, which is very easy to cause fatigue damage and affect the service life.

[0003] Based on this, the existing technology still needs to be improved. Summary of the invention

[0004] In order to solve the above technical problems, an embodiment of the present invention proposes a lifting and suspension device for a power shoe of a ground-powered electric vehicle to solve the technical problems that the power shoe of the prior art is easily damaged and has a short service life.

[0005] The embodiment of the present invention discloses a lifting and suspension device for a power shoe of a ground-powered electric vehicle, comprising:

[0006] A four-bar linkage, wherein the upper end of the four-bar linkage is pivotally connected to the vehicle chassis and the lower end is connected to the power receiving shoe;

[0007] A push rod mechanism, wherein the push rod mechanism is fixed to the vehicle chassis, and a push rod of the push rod mechanism is directly opposite to the lateral pivot of the four-bar linkage mechanism to drive the lateral pivot to move to both sides;

[0008] A limiting device limits the position of the lateral pivot of the four-bar linkage. When the power push rod retracts and breaks away from the contact with the lateral pivot, the limiting device bears the gravity of the power shoe.

[0009] Further, the four-bar linkage mechanism further comprises a left upper link, a right upper link, a left lower link and a right lower link, and the lateral pivot comprises a left lateral pivot and a right lateral pivot;

[0010] in,

[0011] The upper end of the left upper connecting rod and the upper end of the right upper connecting rod are respectively hinged to the vehicle underframe;

[0012] The lower end of the left upper connecting rod and the upper end of the left lower connecting rod are connected via a left lateral pivot;

[0013] The lower end of the right upper connecting rod and the upper end of the right lower connecting rod are connected via a right lateral pivot;

[0014] A left lower pivot is arranged near the lower end of the left lower link, a right lower pivot is arranged near the lower end of the right lower link, a first tooth structure is arranged on the end face of the lower end of the left lower link, a second tooth structure is arranged on the end face of the lower end of the right lower link, and the first tooth structure and the second tooth structure are meshingly connected.

[0015] Furthermore, one end of the limiting device is connected to a mounting seat of the vehicle chassis, and a slideway is provided on the limiting device, through which the lateral pivot passes, so that the lower end of the slideway limits the displacement distance of the lateral pivot.

[0016] Furthermore, two ends of the slideway are provided with limit adjustment structures for adjusting the length of the slideway;

[0017] or,

[0018] The limiting device is a limiting block, the upper part of which is hinged to the vehicle underframe, and buffer blocks are detachably mounted on the upper and lower ends of the slideway.

[0019] Furthermore, it also includes a transverse elastic mechanism, the two ends of which abut against the upper end of the left upper connecting rod and the right upper connecting rod respectively;

[0020] and / or,

[0021] It also includes a longitudinal elastic mechanism, the lower end of which abuts against the upper ends of the lower left pivot and the lower right pivot.

[0022] Furthermore, the transverse elastic mechanism and the longitudinal elastic mechanism are gas spring mechanisms.

[0023] Furthermore, when the power shoe is at the highest position, the longitudinal elastic mechanism is in a compressed energy storage state;

[0024] When the power shoe is at the lowest position, the transverse elastic mechanism is in a compressed energy storage state.

[0025] Furthermore, push plates are provided at the upper ends of the left lower pivot and the right lower pivot, the lower ends of the longitudinal elastic mechanism abut against the push plates, and the upper ends are fixed to the vehicle chassis via a mounting seat.

[0026] Furthermore, the upper end of the four-bar linkage is mounted to the vehicle underframe via a mounting seat.

[0027] Furthermore, the push rod mechanism is an electric push rod, and the electric push rod is fixedly mounted on the mounting seat through a connecting assembly.

[0028] By adopting the above technical solution, the present invention has at least the following beneficial effects:

[0029] The lifting and suspension device for the power shoe of a ground-powered electric vehicle provided by the present invention limits the lowest position of the lateral pivot of the four-bar linkage by setting a limit device, so that when the four-bar linkage is lowered to the lowest state, the limit device bears its gravity, and the push rod is no longer over-pressurized, thereby effectively avoiding damage to the push rod. The limit device has a simple structure, is not easy to damage, has low cost, and is relatively easy to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a structural schematic diagram of the lifting and suspension device of the power shoe of a ground power supply electric vehicle of the present invention;

[0032] Figure 2 for Figure 1 A-direction view;

[0033] Figure 3 It is a cross-sectional schematic diagram of the limiting device of the lifting and lowering suspension device of the power shoe of a ground power supply electric vehicle of the present invention. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0035] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0036] like Figures 1 to 3 As shown, some embodiments of the present invention disclose a lifting and suspension device for a power shoe of a ground-powered electric vehicle, comprising:

[0037] A four-bar linkage 2, wherein the upper end of the four-bar linkage 2 is pivotally connected to the vehicle chassis, and the lower end is connected to the power receiving shoe;

[0038] A push rod mechanism 1, wherein the push rod mechanism 1 is fixed to the vehicle chassis, and a push rod of the push rod mechanism is directly opposite to the lateral pivot 6 of the four-bar linkage 2 to drive the lateral pivot 6 to move to both sides;

[0039] The limiting device 9 limits the position of the lateral pivot 6 of the four-bar linkage 2. When the power push rod retracts and breaks away from the contact with the lateral pivot, the limiting device bears the gravity of the power shoe.

[0040] In this embodiment, a limit device 9 is provided to limit the lowest position of the lateral pivot 6 of the four-bar linkage 2, so that when the four-bar linkage 2 is lowered to the lowest state, the limit device 9 bears its gravity, and the push rod is no longer over-pressed, thereby effectively avoiding damage to the push rod. In addition, the limit device 9 has a simple structure, is not easy to be damaged, is low in cost, and is relatively easy to replace.

[0041] Some embodiments of the present invention disclose a lifting and suspension device for a power shoe of a ground-powered electric vehicle. Based on the above embodiments, Figure 1 As shown, the four-bar linkage 2 further includes a left upper link, a right upper link, a left lower link and a right lower link, and the lateral pivot 6 includes a left lateral pivot 6 and a right lateral pivot 6; wherein,

[0042] The upper end of the left upper connecting rod and the upper end of the right upper connecting rod are respectively hinged to the vehicle underframe;

[0043] The lower end of the left upper connecting rod and the upper end of the left lower connecting rod are connected via a left side pivot 6;

[0044] The lower end of the right upper connecting rod and the upper end of the right lower connecting rod are connected via a right lateral pivot 6;

[0045] A left lower pivot is disposed near the lower end of the left lower link, and a right lower pivot is disposed near the lower end of the right lower link.

[0046] The lower ends of the left lower connecting rod and the right lower connecting rod are meshed and connected via a gear set 11;

[0047] The end surface of the lower end of the left lower connecting rod is provided with a first tooth structure, and the end surface of the lower end of the right lower connecting rod is provided with a second tooth structure, and the first tooth structure and the second tooth structure are meshingly connected.

[0048] This embodiment directly sets a toothed structure at the lower ends of the left lower connecting rod and the right lower connecting rod for meshing connection. The structure is simple and the four-bar linkage 2 can rise and fall synchronously, thereby ensuring the stability of the rising and falling process. At the same time, the stability of the movement can also effectively improve the service life of the entire suspension device.

[0049] In this embodiment, the push rod mechanism 1 is installed in the four-bar linkage 2, and the upper end pivots of the push rod mechanism 1 and the four-bar linkage 2 are fixed to the mounting seat 4 under the vehicle frame. When the power push rod 5 is extended, the lateral pivot 6 of the four-bar linkage 2 is pushed outward, and the lower end pivot 7 is moved upward to raise the power shoe. When the power push rod 5 is retracted, the power shoe moves downward by its own gravity, driving the lower end pivot 7 of the four-bar linkage 2 to move downward and the lateral pivot 6 to move inward. It is characterized in that a limit device 9 of the lateral pivot 6 is fixed on the mounting seat 4. When the power push rod 5 is retracted and disengaged from the lateral pivot 6, the gravity of the power shoe is borne by the limit device 9.

[0050] Some embodiments of the present invention disclose a lifting and suspension device for a power shoe of a ground-powered electric vehicle. Based on the above embodiments, Figure 3 As shown, one end of the limiting device 9 is connected to the mounting seat of the vehicle chassis, and a slideway 10 is provided on the limiting device 9. The lateral pivot 6 passes through the slideway 10, so that the lower end of the slideway 10 limits the displacement distance of the lateral pivot 6. The limiting device 9 can be a limiting block, the upper part of which is hinged to the vehicle chassis, and the upper and lower ends of the slideway 10 are detachably mounted with a buffer block, that is, an elastic shock absorbing mechanism, which can realize the limit height adjustment.

[0051] In some specific embodiments, a threaded hole penetrating to the slideway 10 is provided on the limit block, and after the required buffer block is placed at the end of the slideway 10, the buffer block is fixed in the slideway 10 by screws. The height or installation position of the buffer block can be adjusted according to the required lifting height, so that the limit height can be adjusted to meet the requirements of different lines and working conditions.

[0052] Some embodiments of the present invention disclose a lifting and suspension device for a power shoe of a ground-powered electric vehicle. Based on the above embodiments, Figure 1 , Figure 2 As shown, it also includes a transverse elastic mechanism, the two ends of which abut against the upper end of the upper left connecting rod and the upper right connecting rod respectively; it may include a longitudinal elastic mechanism, the lower end of which abuts against the upper ends of the lower left pivot and the lower right pivot. The transverse elastic mechanism and the longitudinal elastic mechanism are gas spring mechanisms. When the power shoe is in the highest position, the longitudinal elastic mechanism is in a compressed energy storage state; when the power shoe is in the lowest position, the transverse elastic mechanism is in a compressed energy storage state.

[0053] Specifically, the two ends of the transverse gas spring mechanism are respectively pivoted on the two upper links in the four-bar linkage 2. When the lateral pivot 6 of the four-bar linkage 2 moves outward, the transverse gas spring mechanism releases the outward thrust from the compressed state. When the lateral pivot 6 of the four-bar linkage 2 moves inward, the transverse gas spring mechanism is in a compressed energy storage state. The lower end of the vertical gas spring mechanism is fixed on the push plate 12 of the lower end pivot 7 of the four-bar linkage 2. When the lower end pivot 7 of the four-bar linkage 2 moves upward, the upper end of the vertical gas spring mechanism pushes against the upper end pivot mounting seat 4 of the four-bar linkage 2. The vertical gas spring mechanism changes from a free state to a compressed energy storage state. When the lower end pivot 7 of the four-bar linkage 2 moves upward, the vertical gas spring mechanism 12 is in a released free state.

[0054] Some embodiments of the present invention disclose a lifting and suspension device for a ground-powered electric vehicle receiving shoe. On the basis of the above embodiments, a push plate 12 is provided at the upper end of the left lower pivot and the right lower pivot, the lower end of the longitudinal elastic mechanism abuts against the push plate 12, and the upper end is fixed to the vehicle chassis through the mounting seat 4. The upper end of the four-bar linkage 2 is mounted to the vehicle chassis through the mounting seat 4. The push rod mechanism is an electric push rod, and the electric push rod is fixedly mounted on the mounting seat 4 through a connecting assembly.

[0055] Example

[0056] See also Figure 1In the lifting and suspension device for the power shoe of a ground-powered electric vehicle according to the embodiment of the present invention, the power push rod mechanism 1 is located in the four-bar linkage 2, and the upper end pivot 3 of the power push rod mechanism 1 and the four-bar linkage 2 is fixed to the mounting seat 4 under the vehicle chassis. A gear meshing mechanism 11 (a first tooth structure and a second tooth structure) is arranged between the lower end pivots 7 (the lower left pivot and the lower right pivot) of the four-bar linkage 2 to ensure the synchronization of the movement of the two lateral pivots 6. The two ends of the transverse gas spring mechanism 13 are respectively pivotally connected to the upper two links in the four-bar linkage, and the lower end of the vertical gas spring mechanism 14 is fixed to the push plate 12 of the lower end pivot of the four-bar linkage. When the power push rod 5 extends outward, it pushes the lateral pivot 6 of the four-bar linkage mechanism to move outward, and at the same time, the lateral gas spring mechanism 13 releases the outward force from the compressed state, which reduces the burden of the power push rod mechanism 1 and improves the service life. The lower end pivot 7 moves upward, and the power shoe (not shown in the figure) installed on the lower end pivot 7 rises. The upper end of the vertical gas spring mechanism pushes against the upper end pivot mounting seat of the four-bar linkage mechanism, and the vertical gas spring mechanism changes from a free state to a compressed energy storage state. When the power push rod 5 retracts, the power shoe moves downward under the action of its own gravity and the reverse downward thrust of the vertical gas spring mechanism 14, driving the lower end pivot 7 of the four-bar linkage mechanism to move downward and the lateral pivot 6 to move inward. The lateral gas spring mechanism 13 is in a compressed energy storage state, and the vertical gas spring mechanism 14 is in a released free state. A limit device 9 of the lateral pivot 6 is fixed on the mounting seat. When the power push rod 5 retracts and breaks away from the contact with the lateral pivot 6, the limit device 9 bears the gravity of the power shoe. Two upper and lower adjustment rubber blocks (buffer pads 10) are arranged in the long hole of the limit device 9 and fixed by a stop screw 15. This can be used to better buffer and absorb the vibration and impact of the power shoe when it slides to receive power, and the limit height can also be adjusted to adapt to the line and working conditions.

[0057] To sum up, according to the technical solution of the present invention, when the vehicle is in the power-receiving operating state, the power push rod retracts and disengages from the lateral pivot, and the limit device bears the gravity and sliding vibration impact of the power shoe, which greatly improves the shock absorbing effect of the power shoe, avoids fatigue damage to the power push rod mechanism, and extends its service life.

[0058] It should be particularly pointed out that the various components or steps in the above-mentioned embodiments can be cross-linked, replaced, added, or deleted with each other. Therefore, the combinations formed by these reasonable arrangements and combinations should also fall within the scope of protection of the present invention, and the scope of protection of the present invention should not be limited to the embodiments.

[0059] The above are exemplary embodiments disclosed in the present invention. The order disclosed in the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope (including claims) disclosed in the embodiments of the present invention is limited to these examples. Various changes and modifications may be made without departing from the scope defined in the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in individual form, they may also be understood as multiple unless explicitly limited to the singular.

[0060] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A lifting and suspension device for a power shoe of a ground-powered electric vehicle, characterized in that: include: A four-bar linkage, wherein the upper end of the four-bar linkage is pivotally connected to the vehicle chassis and the lower end is connected to the power receiving shoe; A push rod mechanism, wherein the push rod mechanism is fixed to the vehicle chassis, and a push rod of the push rod mechanism is directly opposite to the lateral pivot of the four-bar linkage mechanism to drive the lateral pivot to move to both sides; A limiting device, wherein the limiting device limits the position of the lateral pivot of the four-bar linkage, and when the power push rod retracts and is out of contact with the lateral pivot, the limiting device bears the gravity of the power shoe; One end of the limiting device is connected to the mounting seat of the vehicle chassis, and a slideway is provided on the limiting device, through which the lateral pivot passes, so that the lower end of the slideway limits the displacement distance of the lateral pivot.

2. The lifting and suspension device for the power shoe of a ground power supply electric vehicle according to claim 1, characterized in that: The two ends of the slide are provided with limited position adjustment structures for adjusting the length of the slide; or, The limiting device is a limiting block, the upper part of which is hinged to the vehicle underframe, and the slideway is an oblong hole arranged on the limiting block, and buffer blocks are detachably mounted on the upper and lower ends of the oblong hole.

3. The lifting and suspension device for the power shoe of a ground power supply electric vehicle according to claim 1, characterized in that: The four-bar linkage mechanism further comprises a left upper link, a right upper link, a left lower link and a right lower link, and the lateral pivot comprises a left lateral pivot and a right lateral pivot; in, The upper end of the left upper connecting rod and the upper end of the right upper connecting rod are respectively hinged to the vehicle underframe; The lower end of the left upper connecting rod and the upper end of the left lower connecting rod are connected via a left lateral pivot; The lower end of the right upper connecting rod and the upper end of the right lower connecting rod are connected via a right lateral pivot; A left lower pivot is arranged near the lower end of the left lower link, a right lower pivot is arranged near the lower end of the right lower link, a first tooth structure is arranged on the end face of the lower end of the left lower link, a second tooth structure is arranged on the end face of the lower end of the right lower link, and the first tooth structure and the second tooth structure are meshingly connected.

4. The lifting and suspension device for the power shoe of a ground power supply electric vehicle according to claim 3, characterized in that: It also includes a transverse elastic mechanism, the two ends of which abut against the upper end of the left upper connecting rod and the right upper connecting rod respectively; and / or, It also includes a longitudinal elastic mechanism, the lower end of which abuts against the upper ends of the lower left pivot and the lower right pivot.

5. The lifting and suspension device for the power shoe of a ground power supply electric vehicle according to claim 4, characterized in that: The transverse elastic mechanism and the longitudinal elastic mechanism are gas spring mechanisms.

6. The lifting and suspension device for the power shoe of a ground-powered electric vehicle according to claim 4, characterized in that: When the power shoe is at the highest position, the longitudinal elastic mechanism is in a compressed energy storage state; When the power shoe is at the lowest position, the transverse elastic mechanism is in a compressed energy storage state.

7. The lifting and suspension device for the power shoe of a ground-powered electric vehicle according to claim 4, characterized in that: The upper ends of the left lower pivot and the right lower pivot are provided with push plates, the lower ends of the longitudinal elastic mechanism abut against the push plates, and the upper ends are fixed to the vehicle chassis through a mounting seat.

8. The lifting and suspension device for the power shoe of a ground power supply electric vehicle according to claim 1, characterized in that: The upper end of the four-bar linkage is mounted to the vehicle underframe via a mounting seat.

9. The lifting and suspension device for the power shoe of a ground-powered electric vehicle according to claim 7, characterized in that: The push rod mechanism is an electric push rod, and the electric push rod is fixedly mounted on the mounting seat through a connecting assembly.

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