Boom steering mechanism and boom

Abstract

The utility model relates to the field of vehicle steering, and discloses a boom steering mechanism which comprises a supporting leg, a telescopic device, a steering frame, a connecting frame and a connecting piece, the connecting frame and the connecting piece are hinged to the supporting leg and the steering frame respectively, and the connecting frame and the connecting piece are arranged in a staggered mode. The telescopic device is hinged to the connecting frame and the steering frame. The utility model further discloses a boom truck which comprises a truck body with supporting legs and at least four wheels with bogies, and the truck body is connected with the wheels through the boom truck steering mechanism. According to the arm vehicle steering mechanism and the arm vehicle, the connecting frame and the connecting piece are additionally arranged, so that the steering angle can be greatly increased, the turning radius is reduced, the functions of in-situ bridge expansion and the like are achieved, and the arm vehicle steering mechanism is simple in structure, convenient to use and wide in application range.

Description

TECHNICAL FIELD

[0001] The utility model relates to an arm car steering mechanism and arm car belong to vehicle steering field. BACKGROUND

[0002] The arm car steering structure on the market is connected with the support leg and the truck, and the oil cylinder is hinged on the support leg and the truck to push the truck to steer.

[0003] The steering angle of the truck is limited by the stroke of the oil cylinder. Although the prior art (publication number CN221835420U) discloses a line control automobile wheel 180-degree double-fork arm suspension hydraulic motor steering mechanical mechanism, the truck and the hydraulic rod are connected through the steering assembly, the extension amount of the hydraulic rod is directly transmitted to the truck, and the truck can rotate at a large angle.

[0004] The utility model aims at providing another arm car steering mechanism and arm car with simple structure and capable of solving the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an arm car steering mechanism and arm car, which can increase the steering angle of the truck, has the advantages of simple structure, convenient use, wide application range and the like.

[0006] In order to achieve the above purpose, the utility model adopts the technical scheme that:

[0007] An arm car steering mechanism comprises a support leg, a telescopic device and a truck, and further comprises a connecting frame and a connecting piece, the connecting frame and the connecting piece are hinged with the support leg and the truck respectively, and the connecting frame and the connecting piece are staggered.

[0008] Further, the truck is provided with a main connecting plate and a secondary connecting plate, the connecting frame is hinged with the support leg and the main connecting plate respectively, the connecting piece is hinged with the support leg and the secondary connecting plate respectively, and the telescopic device is hinged with the connecting frame and the secondary connecting plate respectively.

[0009] Further, the telescopic device adopts an oil cylinder, the oil cylinder comprises a cylinder body and a piston rod sleeved in the cylinder body, the cylinder body is hinged with the connecting frame, and the piston rod is hinged with the secondary connecting plate.

[0010] Further, the connecting frame and the connecting piece are each provided with two and are symmetrically arranged on the upper and lower ends of the truck.

[0011] Further, the two connecting pieces are fixed as a whole through a fixed plate.

[0012] Further, the fixed plate is arc-shaped.

[0013] Further, the connecting piece is in a straight shape or in an arc shape.

[0014] Further, the connecting piece is a rod.

[0015] An arm truck comprises a truck body with a support leg and at least four truck wheels with bogies, and the truck body and the truck wheels are connected through the arm truck steering mechanism.

[0016] Compared with the prior art, the arm truck steering mechanism has the advantages that:

[0017] The connecting frame and the connecting piece are driven to rotate simultaneously when the oil cylinder is extended or retracted, thereby driving the bogie to rotate, so that the steering angle of the bogie can be greatly increased, the turning radius is reduced, and functions such as in-situ bridge expansion are realized.

[0018] The arm truck steering mechanism has simple overall structure, is convenient to use, and has wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the arm truck steering mechanism in an initial position according to the arm truck steering mechanism of the utility model;

[0020] Figure 2 is a structural schematic view of the arm truck steering mechanism when the arm truck steering mechanism is steered outward by 90° according to the arm truck steering mechanism of the utility model;

[0021] Figure 3 is a three-dimensional structural schematic view of the connecting piece and the fixed plate according to the third embodiment of the utility model;

[0022] Figure 4 is a top view structural schematic view of the connecting piece and the fixed plate according to the third embodiment of the utility model;

[0023] Figure 5 is a structural schematic view of the arm truck in an initial position according to the fourth embodiment of the utility model;

[0024] Figure 6 is a structural schematic view of the arm truck in a 90° steering position according to the fourth embodiment of the utility model.

[0025] In the drawings

[0026] 1, support leg; 2, telescopic device; 3, bogie; 31, main connecting plate; 32, auxiliary connecting plate; 4, connecting frame; 5, connecting piece; 6, fixed plate; 7, A hinged point; 8, B hinged point; 9, C hinged point; 10, D hinged point; 11, E hinged point; 12, F hinged point; 13, truck body; 14, truck wheel. DETAILED DESCRIPTION

[0027] The utility model will be explained in detail below with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. For the sake of description, if the terms "upper", "lower", "left" and "right" appear below, they only mean the same as the upper, lower, left and right directions of the drawings, and do not limit the structure.

[0028] Embodiment one

[0029] As shown in Figure 1 , Figure 2 , a steering mechanism for an arm vehicle is used on a four-wheel independent steering vehicle; the steering mechanism for the arm vehicle comprises a supporting leg 1, a telescopic device 2, a bogie 3, a connecting frame 4 and a connecting piece 5. The telescopic device 2 is hingedly connected with the connecting frame 4 and the bogie 3 respectively; the telescopic device 2 is an oil cylinder, which comprises a cylinder body and a piston rod sleeved in the cylinder body, the cylinder body is hingedly connected with the connecting frame 4, and the piston rod is hingedly connected with the bogie 3. The connecting frame 4 and the connecting piece 5 are hingedly connected with the supporting leg 1 and the bogie 3 respectively, and the connecting frame 4 and the connecting piece 5 are arranged alternately. When the oil cylinder is telescoped, the connecting frame 4 and the connecting piece 5 are driven to rotate simultaneously, thereby driving the bogie 3 to rotate; in this way, the steering angle of the bogie 3 can be increased, and when applied, the tire (connected with the bogie 3) can be steered outward by 90° from the initial position perpendicular to the supporting leg 1 to be parallel to the supporting leg 1 (of course, according to actual requirements, it can also be steered to a larger angle), and the model with the telescopic supporting leg 1 can realize in-situ bridge expansion.

[0030] In this embodiment, the steering mechanism for the arm vehicle is perpendicular to the supporting leg 1 at the initial position, and for the limit position, the position where the bogie 3 is parallel to the supporting leg 1 is designed as the limit position (i.e. the steering position after the bogie 3 is steered by 90° from the initial position), of course, according to actual requirements, other steering positions (such as the position steered by more than 90° from the initial position) can also be designed as the limit position. The limit position can be divided into an inner limit position and an outer limit position, the inner limit position is the limit position after the bogie 3 is steered inward from the initial position, and the outer limit position is the limit position after the bogie 3 is steered outward from the initial position. The bogie 3 of the steering mechanism for the arm vehicle can be steered back and forth between the initial position and the (inner or outer) limit position or between the inner limit position and the outer limit position.

[0031] In this embodiment, the connecting frame 4 and the connecting piece 5 are both only one. The connecting frame 4 is a plate structure; the connecting piece 5 is straight or arc-shaped, and the connecting piece 5 is a straight rod or a rod with a certain arc; the connecting piece 5 is located below the connecting frame 4. Since there is only one connecting piece 5, in the spatial arrangement, it can avoid interference with the remaining parts (such as the motor) installed at the bogie 3 of the vehicle.

[0032] In the embodiment, the main connecting plates 31 and the auxiliary connecting plates 32 are integrally or fixedly welded on the bogie 3. The connecting frames 4 are respectively hinged with the legs 1 and the main connecting plates 31; the connecting pieces 5 are respectively hinged with the legs 1 and the auxiliary connecting plates 32; the number of the main connecting plates 31 is consistent with the number of the connecting frames 4, and the main connecting plates 31 and the connecting frames 4 are matched with each other in number and arrangement; the number of the auxiliary connecting plates 32 is consistent with the number of the connecting pieces 5, and the auxiliary connecting plates 32 and the connecting pieces 5 are matched with each other in number and arrangement. The fixed end of the telescopic device 2 is hinged with the connecting frame 4, and the telescopic end of the telescopic device 2 is hinged with the auxiliary connecting plate 32, i.e. the cylinder body of the oil cylinder is hinged with the connecting frame 4, and the piston rod of the oil cylinder is hinged with the auxiliary connecting plate 32.

[0033] In the embodiment, the legs 1 are respectively hinged with the connecting frames 4 at A hinging points 7 and hinged with the connecting pieces 5 at B hinging points 8. The bogie 3 is respectively hinged with the connecting frames 4 at C hinging points 9 and hinged with the connecting pieces 5 at D hinging points 10. The telescopic device 2 is hinged at one end with the bogie 3 (the auxiliary connecting plate 32) at E hinging point 11 and hinged at the other end with the connecting frame 4 at F hinging point 12.

[0034] The embodiment has the beneficial effect that by adding the connecting frames 4 and the connecting pieces 5, the steering mechanism of the arm truck can greatly increase the steering angle, thereby reducing the turning radius and realizing the functions of expanding the bridge in place and the like. Meanwhile, the steering mechanism of the arm truck has the advantages of simple structure, convenient use, wide application range and the like.

[0035] Embodiment two

[0036] The difference between the embodiment and the embodiment one is that the connecting frames 4 and the connecting pieces 5 are each two and symmetrically arranged at the upper and lower ends of the bogie 3, so as to ensure the structural stability and make the structure design more reasonable and normative.

[0037] In the embodiment, the two connecting pieces 5 are located between the two connecting frames 4. The main connecting plates 31 and the auxiliary connecting plates 32 are each two and symmetrically arranged at the upper and lower ends of the bogie 3; the two main connecting plates 31 and the two connecting frames 4 are correspondingly hinged, and the two auxiliary connecting plates 32 and the two connecting pieces 5 are correspondingly hinged. The telescopic device 2 is provided with one or two; in the case of one, one telescopic device 2 is respectively hinged with the connecting frame 4 and the auxiliary connecting plate 32 which are both on the upper side or both on the lower side; in the case of two, two telescopic devices 2 are correspondingly hinged with the two connecting frames 4 and the two auxiliary connecting plates 32.

[0038] In the embodiment, since the connecting pieces 5 are two and arranged one above the other with a space left in the middle, the connecting pieces 5 will not interfere with the remaining parts (such as the motor) installed at the bogie 3 of the vehicle.

[0039] The embodiment has the beneficial effects that: the symmetrical arrangement of the connecting frame 4 and the connecting piece 5 on the upper and lower ends of the bogie 3 respectively can ensure the structural stability, and the structural design is more reasonable. The addition of the connecting frame 4 and the connecting piece 5 can greatly increase the steering angle of the arm truck steering mechanism, thereby reducing the turning radius and realizing the functions of in-place bridge expansion and the like. Meanwhile, the arm truck steering mechanism has the advantages of simple structure, convenient use, wide application range and the like.

[0040] Embodiment three

[0041] As shown in Figure 3 , Figure 4 , the difference between the embodiment and the embodiment two is that the two connecting pieces 5 are integrally or weldedly fixed as a whole through the fixed plate 6, the fixed plate 6 is arc-shaped, and the connecting pieces 5 are also arc-shaped, so as to ensure the structural stability and make the structure safer and more reliable.

[0042] In the embodiment, the upper and lower connecting pieces 5 and the middle fixed plate 6 are arc-shaped parts integrally formed; the upper and lower positions of one end of the part are respectively hinged with the supporting legs 1, and the upper and lower positions of the other end of the part are respectively hinged with the two auxiliary connecting plates 32. Since the part is an arc-shaped part (the connecting pieces 5 and the fixed plate 6 are arc-shaped), the part does not interfere with the remaining parts (such as a motor) mounted on the bogie 3.

[0043] The embodiment has the beneficial effects that: the addition of the fixed plate 6 and the fixing of the two connecting pieces 5 as a whole part can make the structure more stable and safer and more reliable. The symmetrical arrangement of the connecting frame 4 on the upper and lower ends of the bogie 3 can ensure the structural stability, and the structural design is more reasonable. The addition of the connecting frame 4 and the connecting piece 5 can greatly increase the steering angle of the arm truck steering mechanism, thereby reducing the turning radius and realizing the functions of in-place bridge expansion and the like. Meanwhile, the arm truck steering mechanism has the advantages of simple structure, convenient use, wide application range and the like.

[0044] Embodiment four

[0045] As shown in Figure 5 , Figure 6 , the embodiment provides an arm truck, which is a four-wheel independent steering type, i.e., the arm truck includes a vehicle body 13 having supporting legs 1 and at least four wheels 14 having bogies 3, wherein the vehicle body 13 and the wheels 14 are connected through the arm truck steering mechanism described in any one of the embodiments one to three.

[0046] In the present embodiment, at the initial position, the wheel 14 (connected with the bogie 3) is perpendicular to the leg 1; and for the extreme position, the position in which the wheel 14 is parallel to the leg 1 is preferably designed as the extreme position (i.e. the steering position after the steering mechanism of the arm truck is steered by 90° from the initial position), of course, according to actual requirements, other steering positions (such as the position steered by more than 90° from the initial position) can also be designed as the extreme position. The extreme position can be divided into an inner extreme position and an outer extreme position, the inner extreme position is the extreme position after the wheel 14 is steered inward from the initial position, and the outer extreme position is the extreme position after the wheel 14 is steered outward from the initial position. The wheel 14 of the arm truck can be steered back and forth between the initial position and the (inner or outer) extreme position, or between the inner extreme position and the outer extreme position.

[0047] The arm truck of the present embodiment has the advantages that: the arm truck has a large steering angle of the bogie 3 or the wheel 14, a small turning radius, and can realize functions such as in-situ bridge expansion; the arm truck has simple structure, is convenient to use, and has wide application range.

[0048] The above-mentioned embodiments should be understood as merely illustrating the present application, and should not be used to limit the scope of the present application. After reading the present application, those skilled in the art can make various equivalent modifications to the embodiments, and all of these modifications fall within the scope of the present application defined by the appended claims.

Claims

1. A bogie steering mechanism comprising a support leg (1), a telescopic device (2), a bogie (3), characterized in that, The arm vehicle steering mechanism further comprises a connecting frame (4) and a connecting piece (5), the connecting frame (4) and the connecting piece (5) are respectively hinged with the supporting leg (1) and the bogie (3), and the connecting frame (4) and the connecting piece (5) are staggered; the telescopic device (2) is respectively hinged with the connecting frame (4) and the bogie (3).

2. The dolly steering mechanism of claim 1, wherein, The bogie (3) is provided with a main connecting plate (31) and a secondary connecting plate (32), the connecting frame (4) is respectively hinged with the supporting leg (1) and the main connecting plate (31), the connecting piece (5) is respectively hinged with the supporting leg (1) and the secondary connecting plate (32), and the telescopic device (2) is respectively hinged with the connecting frame (4) and the secondary connecting plate (32).

3. The dolly steering mechanism of claim 2, wherein, The telescopic device (2) adopts an oil cylinder, the oil cylinder comprises a cylinder body and a piston rod sleeved in the cylinder body, the cylinder body is hinged with the connecting frame (4), and the piston rod is hinged with the secondary connecting plate (32).

4. The dolly steering mechanism of claim 1, wherein, The connecting frame (4) and the connecting piece (5) are each two and symmetrically arranged on the upper and lower ends of the bogie (3).

5. The dolly steering mechanism of claim 4, wherein, The two connecting pieces (5) are fixed as a whole through a fixed plate (6).

6. The dolly steering mechanism of claim 5, wherein, The fixed plate (6) is in an arc shape.

7. The dolly steering mechanism of claim 4, wherein, The connecting piece (5) is in a straight shape or in an arc shape.

8. The dolly steering mechanism of claim 7, wherein, The connecting piece (5) is a rod piece.

9. A bogie comprising a car body (13) with a support leg (1) and at least four car wheels (14) with bogies (3), characterized in that The vehicle body (13) and the wheel (14) are connected through the arm vehicle steering mechanism in any one of claims 1-8.

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