Linkage table bearing and truck

Abstract

The linkage table bearing is characterized in that the linkage table bearing is connected between a vehicle frame and a front wheel steering support and structurally comprises an inner ring piece and an outer ring piece, the inner ring piece is sleeved with the outer ring piece, the front wheel steering support is connected with the inner ring piece, and the outer ring piece is connected with the vehicle frame; or the front wheel steering bracket is connected with the outer ring piece, and the inner ring piece is connected with the frame. The whole structure is stable, running is stable, steering is smooth, rollover is avoided, steering is easy and flexible, riding is comfortable, and the experience is good, the maximum warehouse size is obtained on the premise that the overall dimension of the whole vehicle is not changed, and the effect of larger utilization space is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of trucks, and more particularly to a linkage table bearing and a truck using the linkage table bearing. Background Art

[0002] The tricycle is accepted by many people for its convenience, green and environmental protection, and gradually becomes one of the main means of transportation for people to travel now. Among them, the cargo tricycle is gradually accepted by people for its stable cargo-carrying characteristics, and is more suitable for driving by middle-aged and elderly people. For example, the Chinese patent authorization announcement number is CN217100308U, which discloses an electric cargo truck for cargo, and the key points of its technical solution are to include a bracket, two front wheels and a rear wheel, and to provide a gripping place for the driver's hands through the steering handle, drive the handle turning rod to rotate, drive the two front wheels to swing and control the steering through the synchronous assembly, drive the rear wheel to rotate through the driving assembly, and ensure that the driver can take the items placed on the horizontal board without getting off the car through the horizontal board between the two front wheels, and because the horizontal board is located between the two front wheels, it can ensure that heavy objects are placed on the horizontal board, and provide a place for the items to be placed through the horizontal board, and prevent the items from sliding out of the horizontal board through the several vertical bars, and prevent the driver from directly contacting the top of the vertical bar and scratching it through the first steel pipe. However, the disadvantage is that the structure is not stable enough, the steering is easy to roll over, and the riding comfort experience is insufficient. Therefore, it is necessary to further improve the prior art. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the prior art and to provide a linkage table bearing which is stable and reliable, has smooth running, turns smoothly without tipping over, and turns easily and flexibly.

[0004] Another object of the present invention is to provide a truck that provides a good riding comfort experience and obtains a maximum cargo compartment size under the premise of keeping the overall dimensions of the vehicle unchanged, so as to obtain a larger utilization space.

[0005] The present invention adopts the following technical solutions to achieve the above-mentioned purpose: a linkage table bearing, characterized in that it is connected between the frame and the front wheel steering bracket, and structurally includes an inner ring part and an outer ring part, the outer ring part is sleeved outside the inner ring part, the front wheel steering bracket is connected to the inner ring part, and the outer ring part is connected to the frame; or.

[0006] The front wheel steering bracket is connected to the outer ring component, and the inner ring component is connected to the vehicle frame.

[0007] This linkage bearing adopts a structure that can withstand comprehensive loads and a special bearing steel material, which makes this linkage bearing light in weight, able to withstand very large radial, axial and comprehensive loads, and can rotate easily, flexibly and smoothly, without noise and maintenance-free.

[0008] As a further illustration of the above solution, a plurality of protrusions are arranged at the top end of the inner ring member, the plurality of protrusions are distributed along the circumference of the inner ring member, and the protrusions are higher than the top end surface of the outer ring member.

[0009] Furthermore, the inner wall of the inner ring is provided with a plurality of convex ribs, and each convex rib is correspondingly connected to the protrusion as a whole, which can greatly enhance the mechanical properties of the inner ring and prevent the inner ring from deforming and affecting the smoothness of the front wheel steering.

[0010] Furthermore, a reinforcing connecting plate is provided at the connection position between the outer ring member or the inner ring member and the frame to increase the stability of the connection between the two and prevent twisting and breaking.

[0011] A truck is characterized in that it includes a frame, a cargo bed, a front wheel steering bracket, a steering handle and a linkage bearing, wherein rear wheels are arranged at the rear of the frame, front wheels are arranged on both sides of the front wheel steering bracket respectively, the linkage bearing is connected between the frame and the front wheel steering bracket, and the steering handle is connected to control the front wheel steering bracket through the linkage bearing.

[0012] Furthermore, a plurality of 8-12 mm balls are arranged in the linkage bearing, the clearance between the outer ring and the inner ring of the linkage bearing is 1-3 mm, and the clearance between the balls and the ball track is within 0.05 mm, ensuring the ability to withstand radial, axial and combined loads.

[0013] Furthermore, a cargo bin is fixed on the cargo rack, and the steering handle is fixedly connected to the cargo bin, so that when turning, the cargo bin and the front wheels rotate simultaneously, the front wheels and both sides of the cargo bin always remain parallel, which can reduce the interference angle between the tires and the cargo bin, and obtain a wider cargo bin size while keeping the vehicle width unchanged.

[0014] Furthermore, the cargo rack includes a support rod frame and an outer frame. The support rod frame and the outer frame are arranged inside and outside, and the two are connected as a whole. The support rod frame is connected and fixed to the linkage table bearing.

[0015] Furthermore, the front wheel steering bracket adopts a suspension system, which includes a fixed base, a buffer shock absorber, a left steering front wheel frame and a right steering front wheel frame hinged on both sides of the fixed base, the fixed base is connected to the inner ring, and the buffer shock absorber is connected between the left steering front wheel frame and the right steering front wheel frame to buffer vibrations, impacts, bumps, tilts, unbalanced loads, etc. during driving.

[0016] Furthermore, the suspension system is a multi-link suspension system, and the left steering front wheel frame includes a first link group and a second link group distributed up and down, one end of the first link group and the second link group are respectively hinged to the fixed base, and the other ends of the first link group and the second link group are connected to the left steering front wheel fixed end seat, and the first link group and the second link group are hinged to the left steering front wheel fixed end seat.

[0017] Furthermore, a diagonal rod seat is provided in the left steering front wheel frame, the lower part of the diagonal rod seat is connected and fixed to the second connecting rod group, the upper part of the diagonal plate seat is provided with a connecting cross bar, and the end of the buffer shock absorber is rotatably connected to the connecting cross bar.

[0018] Furthermore, the sides of the fixed base and the left steering front wheel fixed end seat are respectively provided with a fixed base positioning protrusion and a front wheel fixed end seat positioning protrusion, which are located above the second connecting rod group and are used to limit the swing angle of the left steering front wheel frame.

[0019] The beneficial effects that can be achieved by the present invention using the above technical solution are:

[0020] 1. The present invention adopts a linkage bearing structure mainly composed of an inner ring member and an outer ring member. The outer ring member is sleeved outside the inner ring member, the front wheel steering bracket is connected to the inner ring member, and the outer ring member is connected to the frame; or, the front wheel steering bracket is connected to the outer ring member, and the inner ring member is connected to the frame; this linkage bearing adopts a structure that can withstand comprehensive loads and a special bearing steel material, so that this linkage bearing has a light weight, can withstand very large radial, axial, and comprehensive loads, and can rotate easily, flexibly, smoothly, without noise, and maintenance-free.

[0021] 2. The truck of the present invention adopts a linkage platform bearing to connect the front wheel steering bracket and the frame, the cargo bed is connected and supported on the linkage platform bearing, and the steering handle is connected to the cargo bed and / or the linkage platform bearing and / or the cargo compartment, so as to achieve structural stability, smooth driving, smooth steering without tipping, easy and flexible steering, and a good riding comfort experience. Under the premise that the overall dimensions of the vehicle remain unchanged, the maximum cargo compartment size is obtained to obtain a larger utilization space.

[0022] 3. The upper part of the linkage table bearing is connected to the cargo rack and the steering handle, so that when turning, the cargo rack and the wheel set rotate at the same time, reducing the interference angle between the tire and the cargo hold, so as to obtain a wider and longer cargo hold size; at the same time, the linkage table bearing cooperates with the suspension system to obtain a lower distance from the cargo hold to the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the linkage table bearing structure of the present invention.

[0024] Figure 2It is a schematic diagram of the connection structure between the linkage platform bearing, the front wheel steering bracket and the frame of the present invention.

[0025] Figure 3 It is a schematic diagram of the connection structure between the linkage platform bearing and the front wheel steering bracket of the present invention.

[0026] Figure 4 It is a schematic structural diagram of a cargo truck according to the present invention.

[0027] Figure 5 It is a schematic diagram of the installation structure of the cargo rack of the present invention.

[0028] Figure 6 It is a schematic structural diagram of a cargo truck according to the present invention.

[0029] Explanation of the accompanying drawings: 1. inner ring, 1-1. protrusion, 1-2. convex rib, 2. outer ring, 3. front wheel steering bracket, 3-1. fixed base, 3-11. fixed top plate, 3-12. side plate, 3-2. buffer shock absorber, 3-3. left steering front wheel frame, 3-31. first connecting rod group, 3-32. second connecting rod group, 3-33. left steering front wheel fixed end seat, 3-34. diagonal rod seat, 3-35. connecting cross bar, 3-4. right steering front wheel frame, 4. frame, 5. reinforced connecting plate, 6. cargo carrier, 6-1. support rod frame, 6-2. outer frame, 7. steering handle, 8. rear wheel, 9. front wheel, 10. cargo hold, 11. fixed base positioning protrusion, 12. front wheel fixed end seat positioning protrusion, 12-1. triangle plate, 12-2. bottom plate. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the present invention, "at least" means one or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise specified and limited, the terms "assemble", "connect", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally 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.

[0033] In the invention, unless otherwise specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “below”, and “above” a second feature includes that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “above”, “below”, and “below” a second feature includes that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] The following is a further description of the specific implementation of the present invention in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the present invention are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the present invention, but cannot be understood as limiting the present invention.

[0035] like Figure 1-Figure 6As shown, the present invention is a linkage table bearing and a truck, the linkage table bearing is installed between the frame and the front wheel steering bracket, and structurally includes an inner ring 1 and an outer ring 2, the outer ring 2 is sleeved outside the inner ring 1, the front wheel steering bracket 3 is connected to the inner ring 1, and the outer ring 2 is connected to the frame 4; of course, it can also be set that the front wheel steering bracket is connected to the outer ring, and the inner ring is connected to the frame. This linkage table bearing adopts a structure that can withstand comprehensive loads and a special bearing steel material, so that this linkage table bearing has the characteristics of light weight, ability to withstand very large radial, axial, and comprehensive loads, and can rotate easily, flexibly, silky, no noise, and maintenance-free. A plurality of 10mm balls are arranged in the linkage table bearing, the gap between the outer ring and the inner ring is 2mm, and the gap between the ball and the ball track is within 0.05mm, ensuring the ability to withstand radial, axial and comprehensive loads. The top of the inner ring 1 is provided with four protrusions 1-1, and the multiple protrusions 1-1 are distributed along the circumference of the inner ring, and the protrusions 1-1 are higher than the top surface of the outer ring 2. The inner wall of the inner ring 1 is provided with four convex ribs 1-2, and each convex rib is connected with the corresponding protrusion as a whole, which can greatly enhance the mechanical properties of the inner ring and prevent the inner ring from deforming and affecting the smoothness of the front wheel steering. A reinforcing connecting plate 5 is provided at the connection position between the outer ring or the inner ring and the frame to increase the stability of the connection between the two and prevent twisting and breaking.

[0036] The following is the structure of a truck, including a frame 4, a cargo carrier 6, a front wheel steering bracket 3, a steering handle 7 and a linkage bearing. A rear wheel 8 is arranged at the rear of the frame 4, and front wheels 9 are arranged on both sides of the front wheel steering bracket 3. The linkage bearing is connected between the frame and the front wheel steering bracket, and the steering handle is connected to control the front wheel steering bracket through the linkage bearing. A cargo hold 10 is fixed on the cargo carrier 6, and the steering handle is connected and fixed to the cargo hold. The cargo hold 10 is a wooden box or metal box. When turning, since the cargo hold and the front wheels rotate at the same time, the front wheels and the two sides of the cargo hold are always kept parallel, which can reduce the interference angle between the tire and the cargo hold, and obtain a wider cargo hold size under the premise that the width of the vehicle remains unchanged. The cargo carrier 6 includes a support rod frame 6-1 and an outer frame 6-2. The support rod frame 6-1 and the outer frame 6-2 are arranged inside and outside, and the two are connected as a whole. The support rod frame 6-1 is connected and fixed to the linkage bearing.

[0037] Furthermore, the front wheel steering bracket 3 adopts a suspension system. Since the height of the linkage platform bearing is only 36 mm, when combined with the suspension system, a lower distance from the cargo hold to the ground can be obtained. The suspension system includes a fixed base 3-1, a buffer shock absorber 3-2, a left steering front wheel frame 3-3 and a right steering front wheel frame 3-4 hinged on both sides of the fixed base. Structurally, the left steering front wheel frame 3-3 and the right steering front wheel frame 3-4 are consistent. The fixed base 3-1 is connected to the inner ring 1, and the buffer shock absorber 3-2 is connected between the left steering front wheel frame 3-3 and the right steering front wheel frame 3-4 to buffer vibrations, impacts, bumps, tilts, unbalanced loads, etc. during driving.

[0038] Furthermore, the suspension system is a multi-link suspension system, and the left steering front wheel frame 3-3 includes a first link group 3-31 and a second link group 3-32 which are distributed up and down, one end of the first link group and the second link group are respectively hinged to the fixed base, and the other ends of the first link group and the second link group are connected to the left steering front wheel fixed end seat 3-33, and the first link group 3-31 and the second link group 3-32 are hinged to the left steering front wheel fixed end seat 3-33. In this embodiment, the fixed base 3-1 includes a fixed top plate 3-11 and front and rear side plates 3-12 vertically arranged on both sides of the bottom of the fixed top plate, and the fixed top plate is fixed to the annular bottom surface of the inner ring member by fasteners. Of course, the fixed top plate can also be connected to the bottom of the inner ring member by welding. The first link group 3-31 includes two first steering swing links distributed front and back, and the two first steering swing links are arranged parallel to each other; the second link group 3-32 includes two second steering swing links distributed front and back, and the two second steering swing links are arranged parallel to each other.

[0039] Furthermore, a diagonal rod seat 3-34 is provided in the left steering front wheel frame 3-3, the lower part of the diagonal rod seat is connected and fixed to the second connecting rod group, a connecting cross bar 3-35 is provided on the upper part of the diagonal plate seat, and the end of the buffer shock absorber is rotatably connected to the connecting cross bar. The sides of the fixed base 3-1 and the left steering front wheel fixed end seat 3-33 are respectively provided with a fixed base positioning protrusion 11 and a front wheel fixed end seat positioning protrusion 12, and the fixed base positioning protrusion and the front wheel fixed end seat positioning protrusion are located above the second connecting rod group, and are used to limit the swing angle of the left steering front wheel frame. Here, the setting of the fixed base positioning protrusion can prevent the left steering front wheel frame and the right steering front wheel frame from folding toward the cargo bed. In order to improve its mechanical strength, the front wheel fixed end seat positioning protrusion and the fixed base positioning protrusion have the same structure and adopt a U-shaped structure. The front wheel fixed end seat positioning protrusion 12 includes two side triangular plates 12-1 and a bottom plate 12-2. The two side triangular plates are connected to the bottom plate as a whole to prevent deformation and fracture. The fixed base positioning protrusion one corresponding to the left steering front wheel frame and the fixed base positioning protrusion two corresponding to the right steering front wheel frame form an eight-shaped positioning structure, which plays a good limiting role for the left steering front wheel frame and the right steering front wheel frame.

[0040] Compared with the prior art, the present invention adopts a linkage platform bearing and a connection structure with a frame and a front wheel steering bracket, which is suitable for two-wheel, three-wheel, and four-wheel human-powered bicycles or electric vehicles. The linkage platform bearing, the front wheel steering bracket, and the connection structure of the cargo rack make the overall structure stable, the driving is smooth, the steering is smooth without tipping, the steering is easy and flexible, and the riding experience is comfortable. Under the premise that the overall size of the vehicle remains unchanged, the maximum cargo compartment size is obtained to achieve a greater effect of space utilization.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A linkage bearing, It is characterized in that It is connected between the vehicle frame and the front wheel steering bracket, and structurally comprises an inner ring and an outer ring, wherein the outer ring is sleeved outside the inner ring, the front wheel steering bracket is connected to the inner ring, and the outer ring is connected to the vehicle frame; Or, The front wheel steering bracket is connected to the outer ring component, and the inner ring component is connected to the vehicle frame.

2. A linkage bearing according to claim 1, It is characterized in that The top end of the inner ring is provided with a plurality of protrusions, which are distributed along the circumference of the inner ring, and the protrusions are higher than the top end surface of the outer ring.

3. A linkage bearing according to claim 2, It is characterized in that The inner wall of the inner ring is provided with a plurality of convex ribs, and each convex rib is correspondingly connected with the protrusion as a whole.

4. The linkage bearing according to claim 1, It is characterized in that A reinforcing connecting plate is provided at the connecting position between the outer ring member or the inner ring member and the vehicle frame.

5. A truck, It is characterized in that It includes a frame, a cargo carrier, a front wheel steering bracket, a steering handle and a linkage bearing as described in any one of claims 1 to 4, wherein a rear wheel is arranged at the rear of the frame, and front wheels are arranged on both sides of the front wheel steering bracket respectively, the linkage bearing is connected between the frame and the front wheel steering bracket, and the steering handle is connected to control the front wheel steering bracket through the linkage bearing.

6. A truck according to claim 5, It is characterized in that A cargo hold is fixed on the cargo rack, and a steering handle is connected and fixed to the cargo hold.

7. A truck according to claim 5, It is characterized in that The loading rack comprises a supporting rod frame and an outer frame. The supporting rod frame and the outer frame are arranged inside and outside and are connected as a whole. The supporting rod frame is connected and fixed to the linkage table bearing.

8. The truck according to claim 5, It is characterized in that The front wheel steering bracket adopts a suspension system, which includes a fixed base, a buffer shock absorber, a left steering front wheel frame and a right steering front wheel frame hinged on both sides of the fixed base, the fixed base is connected to the inner ring, and the buffer shock absorber is connected between the left steering front wheel frame and the right steering front wheel frame.

9. A truck according to claim 8, It is characterized in that The suspension system is a multi-link suspension system. The left steering front wheel frame includes a first link group and a second link group which are distributed up and down. One end of the first link group and the second link group are respectively hinged to a fixed base, and the other ends of the first link group and the second link group are connected to a left steering front wheel fixed end seat. The first link group and the second link group are hinged to the left steering front wheel fixed end seat. An inclined rod seat is arranged in the left steering front wheel frame. The lower part of the inclined rod seat is connected and fixed to the second link group. A connecting cross bar is arranged on the upper part of the inclined plate seat. The end of the buffer shock absorber is rotatably connected to the connecting cross bar.

10. The truck according to claim 8, It is characterized in that The sides of the fixed base and the left steering front wheel fixed end seat are respectively provided with a fixed base positioning protrusion and a front wheel fixed end seat positioning protrusion, which are located above the second connecting rod group and are used to limit the swing angle of the left steering front wheel frame.

Images