Direct-current horizontal driving wheel structure and vehicle body thereof

Abstract

The present application relates to the technical field of vehicle parts, in particular to a direct-current horizontal driving wheel structure and a vehicle body thereof, comprising: a wheel hub, a driving shaft is fixed to the middle part of one side surface of the wheel hub, a brake disc is fixed to the driving shaft, a bevel gear one, a transmission bevel gear and a bevel gear two are sequentially meshed in transmission, one end of the driving shaft is rotatably installed in the middle part of a fixed shaft; the middle part of a brake frame is fixedly connected with a brake caliper through a fastening bolt, the brake caliper is semi-covered at the edge of the brake disc; the beneficial effect is that: the transmission bevel gear is arranged between the bevel gear one and the bevel gear two, so that the driving shaft and the differential shaft can be kept in transmission connection, and the driving shaft can rotate around the fixed shaft; when the wheel hub is shaken, the driving shaft, the brake disc, the brake frame and the brake caliper can synchronously rotate and swing around the fixed shaft, so that the brake disc on the wheel hub is prevented from being shaken to cause position deviation and affect the brake performance of the device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle parts, in particular to a direct-current horizontal driving wheel structure and a vehicle body thereof. BACKGROUND

[0002] The motor axis of the direct-current horizontal driving wheel structure is parallel or coaxial with the wheel shaft, and the overall layout is flat. Compared with the traditional vertical structure, the horizontal design can reduce the gravity center of the whole machine and optimize the space utilization rate, and is suitable for AGV, electric forklifts and other equipment with high requirements for stability and compactness.

[0003] In the prior art, the Chinese invention with publication number CN103738155B discloses an electric horizontal driving wheel assembly, which uses a driving motor as the rotating shaft of the driving wheel, so that the volume is compact, the manufacturing cost is greatly reduced, and the driving wheel unit does not need to be shifted and reversed to realize forward or backward operation directly by relying on the forward and reverse rotation of the driving motor, which is convenient to use and maintain.

[0004] However, at present, when the driving wheel structure is affected by vibration and the relative position between the brake caliper and the brake disc changes unexpectedly, the contact area between the brake caliper and the brake disc becomes smaller, the braking effect of the brake caliper becomes worse, which leads to abnormal wear and affects the braking performance. Therefore, the present application provides a direct-current horizontal driving wheel structure and a vehicle body thereof to solve the above problems. SUMMARY

[0005] The present application aims to provide a direct-current horizontal driving wheel structure and a vehicle body thereof to solve the problem of the transmission driving wheel structure being affected by vibration and leading to poor braking effect of the brake caliper as described in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a direct-current horizontal driving wheel structure, comprising:

[0007] A hub is provided with a driving shaft in the middle of one side surface, the driving shaft is fixed with a brake disc, one end of the driving shaft is provided with a differential shaft which is collinear with the driving shaft, a fixed shaft which is perpendicular to the driving shaft is arranged between the differential shaft and the driving shaft, one end of the fixed shaft is fixed with a transmission bevel gear, one end of the driving shaft and the differential shaft which are close to each other is respectively fixed with bevel gear one and bevel gear two, the bevel gear one, the transmission bevel gear and the bevel gear two are sequentially meshed and transmitted, and one end of the driving shaft is rotatably installed in the middle of the fixed shaft.

[0008] The lower part of the drive shaft is provided with a brake frame, the brake frame is in the shape of "Fang" character, the middle part of the brake frame is fixedly connected with a brake caliper through a fastening bolt, the brake caliper is semi-covered at the edge of the brake disc, the upper surface of the middle part of the brake frame is fixedly connected with a connecting plate, and the connecting plate is movably sleeved on the outer side of the drive shaft through a bearing, the both ends of the brake frame are fixedly connected with an extension plate, and one end of the extension plate is movably sleeved on the outer side of the end of a fixed shaft.

[0009] Preferably, the middle part of the fixed shaft is provided with a butt joint shaft, one end of the butt joint shaft is fixedly connected with a shaft sleeve, and the shaft sleeve is movably sleeved on the outer side of the fixed shaft, one end surface of the drive shaft is provided with a butt joint hole, and the other end of the butt joint shaft is movably inserted into the inner cavity of the butt joint hole.

[0010] Preferably, the upper part of the fixed shaft is provided with a fixed frame, the fixed frame is in the shape of an inverted "Fang" character, and the both ends of the fixed frame are movably connected with the both ends of the fixed shaft, the upper end of the connecting plate is fixedly connected with a strip-shaped table one, one side surface of the middle part of the fixed frame is fixedly connected with a strip-shaped table two, and a shock absorber assembly is movably installed between the strip-shaped table one and the strip-shaped table two.

[0011] Preferably, the shock absorber assembly comprises a sealed outer cylinder, one end of the sealed outer cylinder is movably inserted with a telescopic shaft rod, a sealing plug is movably installed in the inner cavity of the sealed outer cylinder, and the sealing plug is fixedly connected with one end of the telescopic shaft rod, the inner cavity of the sealed outer cylinder is filled with hydraulic oil, and the inner cavity is provided with a spring.

[0012] Preferably, one end of the telescopic shaft rod is hollow, a plurality of evenly distributed damping small holes are formed through the surface of the sealing plug, and the damping small holes are connected with the inner cavities of the sealed outer cylinder and the telescopic shaft rod, the ends of the sealed outer cylinder and the telescopic shaft rod away from each other are fixedly connected with a hinged ball, and the two hinged balls are movably embedded on the strip-shaped table one and the strip-shaped table two respectively.

[0013] Preferably, the other side surface of the middle part of the fixed frame is fixedly connected with a connecting wing plate, the lower side of the connecting wing plate is fixedly connected with a hanging support through a bolt, and the hanging support is movably sleeved on the outer side of the differential shaft through a bearing.

[0014] Preferably, the inner side of the hanging support is fixedly provided with a protective cover, the bevel gear one, the bevel gear two and the transmission bevel gear are located in the inner cavity of the protective cover, the fixed shaft is movably connected with the protective cover, the brake frame and the fixed frame are located on the outer side of the protective cover, and one end surface of the protective cover close to the brake disc is provided with a vertical waist hole, and the width of the waist hole is not less than the diameter of the drive shaft.

[0015] A vehicle body comprises the direct-current horizontal driving wheel structure mentioned above, and the driving wheel structure is provided with two groups, and a differential assembly is arranged between the two groups of driving wheel structures, an undercarriage support is arranged above the differential assembly, and the two ends of the undercarriage support are fixedly connected with the fixed frames in the two groups of driving wheel structures.

[0016] Preferably, the differential assembly comprises a hollow differential housing, a driven gear one and a driven gear two are movably arranged in the inner cavity of the differential housing, and the driven gear one and the driven gear two are fixedly connected at the ends of the two differential shafts close to each other, a transmission gear is arranged in the gap between the driven gear one and the driven gear two, and the driven gear one, the transmission gear and the driven gear two are sequentially meshed.

[0017] Preferably, an axle body perpendicular to the differential shafts is arranged in the gap between the two differential shafts, the end of the axle body is rotatably connected with the inner wall of the differential housing, the transmission gear is provided with two and is rotatably installed at the two ends of the axle body, a transmission gear slot is arranged at the corner of one end of the differential housing, a driving gear meshing with the transmission gear slot is arranged on the outside of the differential housing, a protective shell is fixedly installed on the lower side of the undercarriage support, the differential housing and the driving gear are located in the inner cavity of the protective shell, and the rotating shaft in the middle of the driving gear and the two differential shafts all movably penetrate the inner wall of the protective shell.

[0018] Compared with the prior art, the beneficial effects of the present application are:

[0019] The transmission bevel gear arranged between the bevel gear one and the bevel gear two enables the driving shaft and the differential shaft to be kept in transmission connection, and the driving shaft can rotate around the fixed shaft, the brake frame is arranged on the lower side of the driving shaft, the brake caliper is installed on the brake frame and is half-covered on the outside of the brake disc, the end of the brake frame is rotatably sleeved on the outside of the end of the fixed shaft, the connecting plate is fixed on the brake frame and is movably sleeved on the outside of the driving shaft, so that the relative position between the brake caliper and the brake disc of the device is always kept unchanged, when the wheel hub is vibrated, the driving shaft, the brake disc, the brake frame and the brake caliper can synchronously rotate and swing around the fixed shaft, thereby avoiding that the brake disc installed on the wheel hub is vibrated to cause the position deviation and affect the braking performance of the device. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view of the overall structure of the present application;

[0021] Figure 2 It is a structure connection diagram of the wheel hub and the differential shaft of the present application;

[0022] Figure 3 It is a structure separation diagram of the driving shaft and the differential shaft of the present application;

[0023] Figure 4 The explosion schematic diagram of the protective cover structure of the application;

[0024] Figure 5 The top view schematic diagram of the driving shaft and differential shaft structure of the application;

[0025] Figure 6 The separated schematic diagram of the driving shaft and docking shaft structure of the application;

[0026] Figure 7 The connection schematic diagram of the fixing frame and fixing shaft structure of the application;

[0027] Figure 8 The three-dimensional schematic diagram of the brake frame structure of the application;

[0028] Figure 9 The internal schematic diagram of the shock absorber assembly structure of the application;

[0029] Figure 10 The explosion schematic diagram of the differential assembly structure of the application;

[0030] Figure 11 The internal schematic diagram of the differential housing structure of the application.

[0031] In the figure: 1, hub; 2, driving shaft; 21, bevel gear one; 22, brake disc; 23, brake caliper; 231, fastening bolt; 24, docking hole; 25, docking shaft; 251, shaft sleeve; 26, fixing shaft; 27, transmission bevel gear; 3, differential shaft; 31, bevel gear two; 32, protective cover; 5, differential assembly; 51, differential housing; 52, transmission gear slot; 53, driving gear; 54, driven gear one; 55, driven gear two; 56, transmission gear; 57, protective shell; 6, brake frame; 61, extension plate; 62, connecting plate; 63, strip table one; 7, fixing frame; 71, strip table two; 72, connecting wing plate; 73, suspension support; 8, shock absorber assembly; 81, sealed outer cylinder; 82, telescopic shaft; 83, sealing plug; 84, spring; 85, damping hole; 86, articulated ball; 9, chassis support. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme of the application clear, complete and the advantages more clear and obvious, the following will further describe the embodiments of the application in combination with the drawings. It should be understood that the specific embodiments described here are part of the embodiments of the application, not all the embodiments, which are used to explain the embodiments of the application, and not to limit the embodiments of the application, all other embodiments obtained by the ordinary skilled in the art without creative labor are within the scope of protection of the application.

[0033] Please refer to Figures 1 to 11, the present invention provides a technical solution:

[0034] Embodiment 1, a DC horizontal drive wheel structure, comprising: a hub 1.

[0035] Specifically, a drive shaft 2 is fixed in the middle of one side surface of the hub 1. The drive shaft 2 is fixedly connected to the hub 1 by bolts and is detachable between the two. A brake disc 22 is fixed on the drive shaft 2. The brake disc 22 is located inside the hub 1, and the diameter of the brake disc 22 is smaller than the inner diameter of the hub 1. A differential shaft 3 collinear with the drive shaft 2 is provided at one end of the drive shaft 2. There is a gap between the differential shaft 3 and the drive shaft 2. A fixed shaft 26 perpendicular to the drive shaft 2 is provided between the differential shaft 3 and the drive shaft 2. A transmission bevel gear 27 is fixed at one end of the fixed shaft 26. Bevel gears 21 and 31 are respectively fixed at the ends of the drive shaft 2 and the differential shaft 3 that are close to each other. The bevel gear 21, the transmission bevel gear 27, and the bevel gear 31 are meshed and transmitted in sequence. As Figure 5 shown, when the differential shaft 3 rotates, the bevel gear 31 drives the transmission bevel gear 27 and the fixed shaft 26 to rotate, thereby driving the bevel gear 21 and the brake disc 22 to rotate. The rotation between the differential shaft 3 and the drive shaft 2 is reversed. One end of the drive shaft 2 is rotatably installed in the middle of the fixed shaft 26. The drive shaft 2 itself can swing within a certain angle range around the fixed shaft 26. And during the swinging process of the drive shaft 2, the bevel gear 21 can always remain in a meshing state with the transmission bevel gear 27, ensuring that the differential shaft 3 can always drive the drive shaft 2 to rotate when rotating;

[0036] Secondly, a brake frame 6 is provided below the drive shaft 2, and the brake frame 6 is in a "C" shape. A brake caliper 23 is fixedly connected to the middle of the brake frame 6 by a fastening bolt 231. The brake caliper 23 semi-covers the edge of the brake disc 22. The brake caliper 23 includes known structures such as a caliper body, a piston, brake pads, a seal, and a guide pin. When the brake caliper 23 works, the piston is pushed by hydraulic oil, and then the brake pads are driven to clamp the brake disc 22 to achieve the braking function. A connecting plate 62 is fixed on the upper surface of the middle of the brake frame 6, and the connecting plate 62 is movably sleeved outside the drive shaft 2 through a bearing. The connecting plate 62 can movably connect the brake frame 6 and the drive shaft 2 together, making the plane where the brake frame 6 is located parallel to the axis of the drive shaft 2. It should be noted that in order to prevent the drive shaft 2 from shifting in its own length direction, during actual use, retaining rings need to be provided on both sides of the connecting plate 62, and annular grooves are opened on the surface of the drive shaft 2. By clamping the retaining rings in the annular grooves, the relative position stability between the connecting plate 62 and the drive shaft 2 can be ensured. Other similar structures will not be elaborated in the specification of this application;

[0037] And, by fixing the extension plate 61 at both ends of the brake frame 6, rotating the extension plate 61 at one end outside the end of the fixed shaft 26, on the one hand, it can prevent the brake frame 6 from rotating around the axis of the drive shaft 2, and on the other hand, it can also make the brake frame 6 rotate around the fixed shaft 26 as the drive shaft 2, so even if the hub 1 is shaken and the drive shaft 2 swings around the fixed shaft 26, the relative position between the drive shaft 2 and the brake frame 6 can always remain unchanged, thereby avoiding the relative position offset between the brake caliper 23 and the brake disc 22. As described above, the hub 1 and the drive shaft 2 of the device can offset a certain angle in the vertical direction around the fixed shaft 26 to offset and buffer the shock when they are shaken. In this process, the relative position between the brake disc 22 and the brake caliper 23 does not change, thereby avoiding affecting the braking effect of the device.

[0038] In order to connect the drive shaft 2 and the fixed shaft 26 together, the application also has a butt joint shaft 25 arranged in the middle of the fixed shaft 26, one end of the butt joint shaft 25 is fixed with a shaft sleeve 251, and the shaft sleeve 251 is rotatably sleeved outside the fixed shaft 26. The butt joint shaft 25 and the shaft sleeve 251 can rotate around the fixed shaft 26 outside the fixed shaft 26. A butt joint hole 24 is formed in one end face of the drive shaft 2. The other end of the butt joint shaft 25 is movably inserted into the inner cavity of the butt joint hole 24, as shown in Figure 6 The drive shaft 2 and the butt joint shaft 25 are connected in a detachable manner. The arrangement of the butt joint shaft 25 can connect the drive shaft 2 and the fixed shaft 26 together, ensure that the drive shaft 2 can rotate and swing around the fixed shaft 26 by a certain angle, and will not interfere with the rotation of the drive shaft 2 around its own axis.

[0039] In order to buffer the shock of the brake frame 6 and the drive shaft 2, the application also has a fixed frame 7 arranged above the fixed shaft 26. The fixed frame 7 is fixed in position. The fixed frame 7 is in the shape of an inverted "Fang" character, and the two ends of the fixed frame 7 are rotatably connected to the two ends of the fixed shaft 26. The fixed frame 7 is mainly used for suspending and positioning the fixed shaft 26 to prevent the position of the fixed shaft 26 from shifting. A strip-shaped table one 63 is fixed to the upper end of the connecting plate 62, and a strip-shaped table two 71 is fixed to one side of the middle of the fixed frame 7. A shock absorber assembly 8 is rotatably installed between the strip-shaped table one 63 and the strip-shaped table two 71. Since the fixed frame 7 is fixed in position, the brake frame 6 and the drive shaft 2 can rotate and swing around the fixed shaft 26 by a certain angle. Therefore, the arrangement of the shock absorber assembly 8 can buffer the swing of the brake frame 6 and the drive shaft 2, maintain the position of the two, and prevent the swing angle of the brake frame 6 and the drive shaft 2 from being too large to collide with other parts around.

[0040] In order to describe the internal structure of the shock absorber assembly 8 in detail, the shock absorber assembly 8 of the application comprises a sealed outer cylinder 81, one end of which is movably connected with a telescopic shaft 82 which can only slide a certain distance along the length direction of the sealed outer cylinder 81. A sealing plug 83 is movably arranged in the inner cavity of the sealed outer cylinder 81 and is fixedly connected with one end of the telescopic shaft 82. The sealing plug 83 is arranged to seal the inner cavity of the sealed outer cylinder 81, so as to avoid disconnection between the telescopic shaft 82 and the sealed outer cylinder 81. The inner cavity of the sealed outer cylinder 81 is filled with hydraulic oil, and a spring 84 is arranged in the inner cavity. The spring 84 is used to buffer the impact received by the shock absorber assembly 8 as a whole, and can also play a damping effect in cooperation with the viscous force of the hydraulic oil, so as to ensure that the shock absorber assembly 8 as a whole can buffer and damp the vibration received by the brake frame 6 and the drive shaft 2.

[0041] In order to install and connect the shock absorber assembly 8, one end of the telescopic shaft 82 is hollow, and a plurality of evenly distributed damping holes 85 are formed through the surface of the sealing plug 83 and communicate with the inner cavities of the sealed outer cylinder 81 and the telescopic shaft 82. The hydraulic oil in the inner cavities of the sealed outer cylinder 81 and the telescopic shaft 82 can be exchanged through the damping holes 85. During the flow of the hydraulic oil, the damping holes 85 have a small diameter and can damp the flow of the hydraulic oil. Therefore, the shock absorber assembly 8 as a whole has a damping function. Hinge balls 86 are fixed to the ends of the sealed outer cylinder 81 and the telescopic shaft 82 away from each other. The two hinge balls 86 are respectively rotatably embedded in the strip-shaped table one 63 and the strip-shaped table two 71. The hinge balls 86 are arranged to rotatably install the shock absorber assembly 8 as a whole between the strip-shaped table one 63 and the strip-shaped table two 71, so as to adapt to the position change of the brake frame 6.

[0042] In order to install and position the differential shaft 3, the application also has a connecting wing plate 72 fixed to the other side of the middle part of the fixed frame 7. The lower side of the connecting wing plate 72 is fixedly connected with a suspension bracket 73 through bolts. The suspension bracket 73 is rotatably sleeved on the outer side of the differential shaft 3 through a bearing. The suspension bracket 73 is mainly arranged to suspend and position the differential shaft 3, so as to avoid the position deviation of the differential shaft 3. The suspension bracket 73 is detachably connected with the fixed frame 7. According to the actual installation requirement, the installation position of the suspension bracket 73 can be flexibly adjusted, so as to ensure that the installation position of the differential shaft 3 is more accurate and prevent the bevel gear two 31 from disengaging with the transmission bevel gear 27.

[0043] In order to protect the bevel gear 21, the bevel gear 31 and the transmission bevel gear 27, the application also has a protective cover 32 fixedly arranged on the inner side of the suspension support 73, and the bevel gear 21, the bevel gear 31 and the transmission bevel gear 27 are located in the inner cavity of the protective cover 32, and the protective cover 32 is mainly used for waterproofing, dustproofing and the like of the bevel gear 21, the bevel gear 31 and the transmission bevel gear 27, the fixed shaft 26 is movably penetratedly connected with the protective cover 32, the brake frame 6 and the fixed frame 7 are located on the outer side of the protective cover 32, the fixed frame 7 is located in the inner side region of the brake frame 6, the fixed frame 7 can be fixed with the protective cover 32, so as to further improve the stability of the protective cover 32, a vertical waist hole is formed in the end face of the protective cover 32 close to the brake disc 22, and the width of the waist hole is not less than the diameter of the drive shaft 2, since the drive shaft 2 can rotate and swing around the fixed shaft 26 by a certain angle, the waist hole can avoid collision between the drive shaft 2 and the protective cover 32, since the bevel gear 21 is close to the fixed shaft 26, when the drive shaft 2 rotates and swings, the change of the position of the bevel gear 21 is small, the space size of the inner cavity of the protective cover 32 can allow the bevel gear 21 to deviate by a small distance, and collision between the two does not occur.

[0044] The application further discloses a vehicle body comprising the above-mentioned direct-current horizontal driving wheel structure, and the driving wheel structure is provided with two groups, and a differential assembly 5 is arranged between the two groups of driving wheel structures, and a chassis support 9 is arranged above the differential assembly 5, and the two ends of the chassis support 9 are fixedly connected with the fixed frames 7 in the two groups of driving wheel structures, respectively. Figure 1 As shown in the figure, the arrangement of the two groups of driving wheel structures can ensure the stability of the vehicle body, and the two groups of driving wheel structures both have the function of independent suspension, so that the vehicle body has good stability and damping performance when moving.

[0045] In order to describe the structure of the differential assembly 5 in detail, the differential assembly 5 of the application comprises a hollow differential housing 51, and a driven gear one 54 and a driven gear two 55 are movably arranged in the inner cavity of the differential housing 51, and the driven gear one 54 and the driven gear two 55 are fixedly connected with the two differential shafts 3 close to each other, respectively, and a transmission gear 56 is arranged in the gap between the driven gear one 54 and the driven gear two 55, and the driven gear one 54, the transmission gear 56 and the driven gear two 55 are sequentially meshed, as shown in the figure. Figure 11As shown, the differential housing 51 can only rotate around the differential shaft 3, the transmission gear 56 is provided with two, the transmission gear 56 and the differential housing 51 are rotatably connected, when the differential housing 51 rotates, the two transmission gears 56 rotate around the differential shaft 3, at this time the transmission gear 56 does not rotate itself, the driven gear one 54 and the driven gear two 55 can rotate synchronously and in the same direction, when the vehicle body of the device is turning, the rotational speeds of the two wheel hubs 1 are different, that is, the rotational speeds of the two differential shafts 3 are different, at this time the transmission gear 56 can automatically rotate itself to adapt to the different rotational speeds of the two differential shafts 3.

[0046] In order to protect the differential assembly 5, the application also has an axle body perpendicular to the differential shaft 3 arranged in the gap between the two differential shafts 3, the end of the axle body is rotatably connected with the inner wall of the differential housing 51, the two transmission gears 56 are rotatably installed on the two ends of the axle body, the axle body is arranged to ensure the stability of the installation of the transmission gear 56 and avoid the position deviation of the transmission gear 56, a transmission gear slot 52 is arranged at one end corner of the differential housing 51, the outside of the differential housing 51 is provided with a driving gear 53 engaged with the transmission gear slot 52, the transmission gear slot 52 and the driving gear 53 are engaged with each other, the driving gear 53 can be used to drive the differential housing 51 to rotate, the middle part of the driving gear 53 is provided with a rotating shaft for connecting with an external driving motor, a protective shell 57 is fixedly installed on the lower side of the chassis support 9, the differential housing 51 and the driving gear 53 are located in the inner cavity of the protective shell 57, the protective shell 57 is arranged to protect the differential assembly 5 as a whole, the rotating shaft in the middle part of the driving gear 53 and the two differential shafts 3 are movably penetrated through the inner wall of the protective shell 57, since the protective shell 57 itself is relatively fixed with the chassis support 9, therefore, the protective shell 57 can not only protect the differential assembly 5, but also support the differential shaft 3 and the rotating shaft of the driving gear 53 to a certain extent.

[0047] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A DC horizontal drive wheel structure, characterized in that: Comprising: A hub (1), a drive shaft (2) is fixed in the middle of one side surface of the hub (1), a brake disc (22) is fixed on the drive shaft (2), a differential shaft (3) collinear with the drive shaft (2) is arranged at one end of the drive shaft (2), a fixed shaft (26) perpendicular to the drive shaft (2) is arranged between the differential shaft (3) and the drive shaft (2), a transmission bevel gear (27) is fixed at one end of the fixed shaft (26), bevel gears one (21) and bevel gears two (31) are respectively fixed at the ends of the drive shaft (2) and the differential shaft (3) close to each other, and the bevel gear one (21), the transmission bevel gear (27) and the bevel gear two (31) are meshed and transmitted in sequence, and one end of the drive shaft (2) is rotatably installed in the middle of the fixed shaft (26); A brake frame (6) is arranged below the drive shaft (2), and the brake frame (6) is in a "U" shape. A brake caliper (23) is fixedly connected to the middle of the brake frame (6) through a fastening bolt (231). The brake caliper (23) semi-covers the edge of the brake disc (22). A connecting plate (62) is fixed on the upper surface of the middle of the brake frame (6), and the connecting plate (62) is movably sleeved outside the drive shaft (2) through a bearing. Extension plates (61) are fixed at both ends of the brake frame (6), and one end of the extension plate (61) is rotatably sleeved outside the end of the fixed shaft (26); A docking shaft (25) is arranged in the middle of the fixed shaft (26). A shaft sleeve (251) is fixed at one end of the docking shaft (25), and the shaft sleeve (251) is rotatably sleeved outside the fixed shaft (26). A docking hole (24) is formed in one end surface of the drive shaft (2), and the other end of the docking shaft (25) is movably inserted into the inner cavity of the docking hole (24); A fixing frame (7) is arranged above the fixed shaft (26). The fixing frame (7) is in an inverted "U" shape, and both ends of the fixing frame (7) are respectively rotatably connected to both ends of the fixed shaft (26). A strip-shaped platform one (63) is fixed at the upper end of the connecting plate (62). A strip-shaped platform two (71) is fixed on one side surface of the middle of the fixing frame (7). A shock absorber assembly (8) is rotatably installed between the strip-shaped platform one (63) and the strip-shaped platform two (71); A connecting wing plate (72) is fixed on the other side surface of the middle of the fixing frame (7). A suspension bracket (73) is fixedly connected to the lower side of the connecting wing plate (72) through a bolt. The suspension bracket (73) is rotatably sleeved outside the differential shaft (3) through a bearing; A protective cover (32) is fixedly arranged inside the suspension bracket (73). The bevel gear one (21), the bevel gear two (31) and the transmission bevel gear (27) are all located inside the protective cover (32). The fixed shaft (26) is movably penetrated and connected with the protective cover (32). The brake frame (6) and the fixing frame (7) are both located outside the protective cover (32). A vertical waist-shaped hole is formed in one end surface of the protective cover (32) close to the brake disc (22), and the width of the waist-shaped hole is not less than the diameter of the drive shaft (2).

2. The DC horizontal drive wheel structure according to claim 1, characterized in that: The shock absorber assembly (8) includes a sealed outer cylinder (81), a telescopic shaft (82) is movably inserted into the inner cavity of one end of the sealed outer cylinder (81), a sealing plug (83) is slidably installed in the inner cavity of the sealed outer cylinder (81), and the sealing plug (83) is fixedly connected to one end of the telescopic shaft (82). The inner cavity of the sealed outer cylinder (81) is filled with hydraulic oil and a spring (84) is provided in the inner cavity.

3. The DC horizontal drive wheel structure according to claim 2, characterized in that: One end of the telescopic shaft (82) is hollow. The surface of the sealing plug (83) is provided with a plurality of uniformly distributed damping holes (85), and the damping holes (85) are connected to the inner cavity of the sealing outer cylinder (81) and the inner cavity of the telescopic shaft (82). The ends of the sealing outer cylinder (81) and the telescopic shaft (82) that are far apart from each other are fixed with hinged balls (86). The two hinged balls (86) are respectively rotatably embedded on the first strip platform (63) and the second strip platform (71).

4. A vehicle body, characterized in that: The system includes the DC horizontal drive wheel structure as described in claim 3, and the drive wheel structure is provided in two sets. A differential assembly (5) is provided between the two sets of drive wheel structures. A chassis bracket (9) is provided above the differential assembly (5). The two ends of the chassis bracket (9) are respectively fixedly connected to the fixing frame (7) in the two sets of drive wheel structures.

5. A vehicle body according to claim 4, characterized in that: The differential assembly (5) includes a hollow differential housing (51). A driven gear one (54) and a driven gear two (55) are movably disposed in the inner cavity of the differential housing (51). The driven gear one (54) and the driven gear two (55) are respectively fixedly connected to the ends of two differential shafts (3) that are close to each other. A transmission gear (56) is disposed in the gap between the driven gear one (54) and the driven gear two (55). The driven gear one (54), the transmission gear (56) and the driven gear two (55) mesh and transmit power in sequence.

6. A vehicle body according to claim 5, characterized in that: A shaft perpendicular to the differential shaft (3) is provided in the gap between the two differential shafts (3). The end of the shaft is rotatably connected to the inner wall of the differential housing (51). Two transmission gears (56) are provided and are rotatably installed at both ends of the shaft. A transmission tooth groove (52) is provided at one corner of the differential housing (51). A drive gear (53) meshing with the transmission tooth groove (52) is provided on the outer side of the differential housing (51). A protective shell (57) is fixedly installed on the lower side of the chassis bracket (9). The differential housing (51) and the drive gear (53) are both located in the inner cavity of the protective shell (57). The rotating shaft in the middle of the drive gear (53) and the two differential shafts (3) all movably penetrate the inner wall of the protective shell (57).

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