Double-tire wheel set structure with differential drive

Abstract

The utility model discloses a double-tire wheel set structure with differential drive, which comprises an outer tire and an inner tire which are arranged side by side, and is characterized in that the outer tire and the inner tire are respectively and fixedly arranged on two mutually independent shafts, and the two shafts are connected together through a differential mechanism; the differential mechanism is in transmission connection with the driving shaft; a gap is formed between the outer tire and the inner tire; one end of a suspension longitudinal swing arm assembly used for being connected with a vehicle body extends into the gap and is fixedly connected with the differential mechanism; one end of a suspension connecting rod guide arm assembly used for being connected with a vehicle body extends into the gap and is connected with the differential mechanism in a swinging mode. The suspension longitudinal swing arm assembly and the suspension connecting rod guide arm assembly are located on the front side and the rear side of the double-tire-wheel-set structure respectively. The differential mechanism is additionally arranged, so that the relative abrasion between the tire and the ground during turning can be effectively reduced, and the service life of the wheel is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of double-row wheels, in particular to a double-tire wheel set structure with differential drive. Background Art

[0002] The tires used on large trucks used for transportation are mostly double-row wheels; double-row wheels can improve the safety of large trucks during driving; at the same time, they also improve the overall carrying capacity of the trucks.

[0003] At present, the existing double-row wheels of trucks are directly fixed together with bolts. When the truck turns, due to the different turning radius of the outer tire and the inner tire in the double-row wheels, the outer tire and the inner tire interfere with each other during the turning process, affecting the safety performance of the truck. At this time, the double-row wheels only rely on friction to turn when turning. When the truck makes a sharp turn at high speed, the turning of the existing double-row wheels will be extremely unstable. Under this unstable condition, the fully loaded truck is very likely to roll over.

[0004] In addition, the existing double-row wheels are connected to the vehicle body through a suspension system. The suspension system is located on the inner side of the wheel, occupying the installation space between the left and right double-row wheels, resulting in the influence of the interior space of the vehicle body. Utility Model Content

[0005] In view of the above problems, the utility model provides a double-tire wheel set structure with differential drive to solve the problem in the prior art that when the double-row wheels turn, the outer tire and the inner tire in the double-row wheels interfere with each other during the turning process due to the different turning radius of the outer tire and the inner tire in the double-row wheels, and the double-row wheels are connected to the vehicle body through the existing suspension system, occupying the installation space between the left and right double-row wheels.

[0006] A dual-tire wheel set structure with differential drive, comprising an outer tire and an inner tire arranged side by side, characterized in that the outer tire and the inner tire are respectively fixedly arranged on two independent shafts, and the two shafts are connected together through a differential mechanism, and the differential mechanism is drivingly connected to the drive shaft;

[0007] A gap is provided between the outer tire and the inner tire; one end of a suspension longitudinal swing arm assembly for connecting the vehicle body extends into the gap and is fixedly connected to the differential mechanism; one end of a suspension connecting rod guide arm assembly for connecting the vehicle body extends into the gap and is swingably connected to the differential mechanism; the suspension longitudinal swing arm assembly and the suspension connecting rod guide arm assembly are respectively located at the front and rear sides of the dual tire wheel set structure.

[0008] Preferably, the differential mechanism includes a housing with a hollow structure. The side wall of the housing is formed with half-axle mounting holes for mounting the half-axles. Two shafts respectively pass through the half-axle mounting holes through bearings and extend into the housing. Side gears are respectively connected to the two shafts. A star gear is arranged between the two side gears. A bracket is sleeved on one of the shafts. The star gear is rotatably connected to the bracket. The star gear meshes with the two side gears at the same time. An annular gear is fixedly arranged on the bracket. The annular gear is in transmission connection with the drive shaft.

[0009] The drive shaft drives the annular gear to rotate. The annular gear drives the bracket to rotate. The bracket drives the star gear to revolve, thereby driving the side gears to rotate. The side gears drive the wheels to rotate.

[0010] Preferably, the suspension longitudinal swing arm assembly includes a longitudinal arm 12, a longitudinal arm connection bracket, an elastic element 5 and a vehicle body connection piece. The width of the longitudinal arm 12 is smaller than the width of the gap. One end of the longitudinal arm 12 extends into the gap and is fixedly connected to the housing of the differential mechanism. The longitudinal arm connection bracket is arranged at the other end of the longitudinal arm 12. The elastic element 5 is connected to the upper part of the longitudinal arm connection bracket. The vehicle body connection piece is connected to the lower part of the longitudinal arm connection bracket.

[0011] Preferably, the suspension link guiding arm assembly includes a mounting swing arm 7 and a connecting arm bracket 8. The width of the mounting swing arm 7 is smaller than the width of the gap. The mounting swing arm 7 extends into the gap and is rotatably connected to the housing of the differential mechanism. One side of the connecting arm bracket 8 is rotatably connected to the mounting swing arm 7, and the other side is used for connecting to the vehicle body.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. Compared with the normal double-tire wheel set structure, a differential mechanism is added between the wheels of the present utility model. Especially when turning, it can effectively reduce the relative wear between the tires and the ground during turning and extend the service life of the wheels.

[0014] 2. Compared with the existing double-row wheels which are connected to the vehicle body through a suspension system and the suspension system is located inside the wheels, the double-row wheels of the present application are connected to the vehicle body through the suspension longitudinal swing arm assembly and the suspension link guiding arm assembly located on the front and rear sides of the double-row wheels, without occupying the installation space between the left and right double-row wheels, increasing the internal space between the left and right wheel groups, and improving the comfort of the vehicle.

[0015] 3. The present utility model can be independently driven or linked left and right through a transmission mechanism.

[0016] 4. The present utility model adopts independent drive. Compared with the prior art, it can reduce the intermediate transmission mechanism of the drive wheels, effectively reduce the intermediate floor, increase the internal space of the vehicle, reduce the overall height of the vehicle, reduce the wind resistance coefficient, and reduce energy consumption.

[0017] 5. The utility model adopts independent drive control to improve the maneuverability of the vehicle. Description of the Drawings

[0018] Figure 1 It is a side schematic view of a double-row wheel structure with differential drive.

[0019] Figure 2 It is a top view of a double-row wheel structure with differential drive.

[0020] Figure 3 It is a three-dimensional schematic view of a double-row wheel structure with differential drive.

[0021] Figure 4 It is Figure 3 A schematic view with the outer vehicle tire omitted in

[0022] Figure 5 It is a schematic view of the differential mechanism.

[0023] Suspension link guide arm - 1, drive shaft - 2, double-row wheel - 3, suspension longitudinal swing arm assembly - 4, elastic element - 5, vehicle body connecting piece - 6, mounting swing arm - 7, connecting arm bracket - 8, outer vehicle tire - 9, inner vehicle tire - 10, differential mechanism - 11, longitudinal arm - 12, outer vehicle tire shaft - 13, inner vehicle tire shaft - 14, gear - 15, clearance - 16, longitudinal arm connecting bracket - 17, housing - 18, half shaft mounting hole - 19, ring gear - 20. Detailed Implementation Modes

[0024] Next, the technical solutions of the present utility model will be described in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments; and the structures shown in the drawings are only schematic and do not represent real objects. It should be noted that based on these embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0025] It should be noted that in this article, the term "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of additional identical or equivalent elements in the process, method, article or device including the said element.

[0026] The terms "upper", "lower", "inner", "outer", etc. do not constitute absolute spatial relationship limitations, but are only concepts of relative positions, which can be understood by those skilled in the art.

[0027] See also Figures 1-3 Taking the double-row wheel structure of a truck as an example, it includes an outer tire 9 and an inner tire 10 arranged side by side, which significantly increases the driving load of the vehicle.

[0028] The outer tire 9 and the inner tire 10 are respectively fixedly arranged on two independent shafts (13, 14), and the two shafts (13, 14) are connected together through a differential mechanism 11. The differential mechanism 11 is located between the outer tire 9 and the inner tire 10, and a gap 16 is arranged between the outer tire 9 and the inner tire 10.

[0029] In this embodiment, the differential mechanism includes a hollow housing 18, the side wall of the housing is formed with a half-shaft mounting hole 19 for mounting the half-shaft, two shafts are respectively extended into the housing 18 through the half-shaft mounting hole through the bearing, the two shafts are respectively connected with side gears, a star gear is arranged between the two side gears, a bracket is mounted on one of the shafts, the star gear can be connected to the bracket in a self-rotating manner, the star gear is meshed with the two side gears at the same time, a ring gear 20 is fixedly arranged on the bracket, and the ring gear 20 is meshed and transmission-connected with the gear 15 at the front end of the drive shaft 2. The mechanical structure of the differential mechanism adopts a conventional structure, which will not be described in detail here.

[0030] The differential mechanism 11 is drivingly connected to the drive shaft 2 .

[0031] When the truck moves forward, the drive shaft 2 drives the ring gear to rotate, the ring gear drives the bracket to rotate, the bracket drives the star gear to revolve, the star gear drives the two side gears to rotate synchronously, and the two side gears drive the wheels to rotate synchronously.

[0032] When the truck turns left, the turning radius of the left tire is small, and the turning radius of the right tire is large. The drive shaft 2 drives the ring gear to rotate, and the bracket drives the star gear to revolve. At the same time, the star gear rotates under pressure, driving the side gear on the right to rotate faster, so that the rotation speed of the side gear on the right is faster than that of the side gear on the left, so that the rotation speed of the left tire is slow and the rotation speed of the right tire is fast.

[0033] Especially when turning, it can effectively reduce the relative wear between the tire and the ground when turning, and extend the service life of the wheel.

[0034] Installation of double-row wheel structure:

[0035] The suspension longitudinal swing arm assembly 4 and the suspension connecting rod guide arm assembly 1 are respectively located at the front and rear sides of the double-row wheel 3.

[0036] The suspension longitudinal swing arm assembly 4 includes a longitudinal arm 12, a longitudinal arm connection bracket 17, an elastic element 5 and a vehicle body connection member 6. The longitudinal arm 12 is made of stainless steel plate with one end larger and the other end smaller. The width of the longitudinal arm 12 is smaller than the width of the gap 16. The front end of the longitudinal arm 12 extends into the gap 16 and is fixedly connected to the housing of the differential mechanism 11. The longitudinal arm connection bracket 17 is arranged at the other end of the longitudinal arm 12. The elastic element 5 is connected to the upper part of the longitudinal arm connection bracket 17. The elastic element 5 is connected to the vehicle body and functions as a shock absorber. The vehicle body connection member 6 is rotatably connected to the lower part of the longitudinal arm connection bracket 17 through a pin shaft. The vehicle body connection member 6 is fixedly connected to the vehicle body through bolts.

[0037] The suspension link guide arm assembly 1 includes a mounting swing arm 7 and a link bracket 8. The width of the mounting swing arm 7 is smaller than the width of the gap 16. The mounting swing arm 7 extends into the gap 16 and is hinged to the housing of the differential mechanism 11. One side of the link bracket 8 is rotatably connected to the mounting swing arm 7, and the other side is used to connect to the vehicle body.

[0038] Compared with the existing double-row wheels which are connected to the vehicle body through a suspension system and the suspension system is located inside the wheels, the double-row wheels of the present application are connected to the vehicle body through the suspension longitudinal swing arm assembly and the suspension link guide arm assembly located on the front and rear sides of the double-row wheels, without occupying the installation space between the left and right double-row wheels, increasing the internal space between the left and right wheel groups, and improving the comfort of the vehicle.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-tire wheel set structure with differential drive, comprising an outer tire and an inner tire arranged side by side, characterized in that: The outer tire and the inner tire are respectively fixedly arranged on two independent shafts, and the two shafts are connected together through a differential mechanism, and the differential mechanism is drivingly connected to the drive shaft; A gap is provided between the outer tire and the inner tire; one end of the suspension longitudinal swing arm assembly connected to the vehicle body extends into the gap and is fixedly connected to the differential mechanism; one end of the suspension connecting rod guide arm assembly connected to the vehicle body extends into the gap and is swingably connected to the differential mechanism; The suspension longitudinal swing arm assembly and the suspension link guide arm assembly are respectively located at the front and rear sides of the dual-tire wheel set structure.

2. The dual-tire wheel set structure with differential drive according to claim 1, characterized in that: The differential mechanism includes a hollow shell, and a half-shaft mounting hole for mounting the half-shaft is formed on the side wall of the shell. The two shafts extend into the shell through the half-shaft mounting holes through bearings respectively. The two shafts are respectively connected with side gears, and a star gear is arranged between the two side gears. The bracket is mounted on one of the shafts, and the star gear can be connected to the bracket in a self-rotating manner. The star gear is meshed with the two side gears at the same time. A ring gear is fixedly arranged on the bracket, and the ring gear is drivingly connected to the drive shaft.

3. The dual-tire wheel set structure with differential drive according to claim 1, characterized in that: The suspension longitudinal swing arm assembly includes a longitudinal arm, a longitudinal arm connecting bracket, an elastic element and a vehicle body connecting piece. The width of the longitudinal arm is smaller than the width of the gap. One end of the longitudinal arm extends into the gap and is fixedly connected to the housing of the differential mechanism. The longitudinal arm connecting bracket is arranged at the other end of the longitudinal arm. The elastic element is connected to the upper part of the longitudinal arm connecting bracket. The vehicle body connecting piece is connected to the lower part of the longitudinal arm connecting bracket.

4. The dual-tire wheel set structure with differential drive according to claim 1, characterized in that: The suspension link guide arm assembly includes a mounting swing arm and a connecting arm bracket. The width of the mounting swing arm is smaller than the width of the gap. The mounting swing arm extends into the gap and is rotatably connected to the housing of the differential mechanism. One side of the connecting arm bracket is rotatably connected to the mounting swing arm, and the other side is used to connect to the vehicle body.

Images