Driving wheel assembly and forklift

Abstract

The utility model discloses a driving wheel assembly and a forklift, and the driving wheel assembly comprises a hub, a hub rotating shaft and a first locking piece; the hub is provided with at least one first matching hole; the hub rotating shaft comprises a connecting part and a positioning part; the positioning part is connected with at least one second matching part, and the first matching part is matched with the second matching part so as to position the connection of the hub and the connecting part; the first locking piece is connected with the connecting part and used for pressing and fixing the hub so that the hub rotating shaft can drive the hub to rotate. The driving wheel assembly and the forklift are used for conducting initial positioning on the wheel, the coaxiality between the wheel and the hub rotating shaft is improved, and installation of the wheel is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of drive wheel assemblies and fork trucks. BACKGROUND

[0002] The existing fork truck generally adopts wheel to drive, and the wheel is installed on a hub rotating shaft, which is used to receive the power of a motor to drive the wheel to rotate. In the existing fork truck, the wheel is sleeved with the hub rotating shaft and locked on the hub support by a plurality of bolts, which are generally distributed in an annular array.

[0003] During the locking process of the bolts, when the bolt at one position is locked, the wheel at this position will be close to the hub support, while the other parts will be away from the hub support, causing the wheel to deviate from the hub support and the hub rotating shaft, and thus causing the other bolts to be misaligned. The misaligned bolts will be difficult or even impossible to lock, and the operation is difficult. Moreover, if the wheel and the hub rotating shaft are inclined, the wheel will be unbalanced after being locked and fixed, causing the wheel to rotate unstably and possibly causing the hub rotating shaft to deform. SUMMARY

[0004] To overcome the deficiencies of the prior art, the utility model provides a kind of drive wheel assemblies and fork trucks, for the initial positioning of wheel, improve the coaxial degree between wheel and hub rotating shaft, facilitate the installation of wheel.

[0005] The utility model realizes the following technical solutions:

[0006] A kind of drive wheel assembly, comprising:

[0007] Hub, provided with at least one first adapter part;

[0008] Hub rotating shaft, comprising connecting part and positioning part;The positioning part is connected with at least one second adapter part, and the first adapter part is matched with the second adapter part to position the connection of the hub and the connecting part;

[0009] First locking member, connected with the connecting part and used to compress and fix the hub, so that the hub rotating shaft can drive the hub to rotate.

[0010] Further, the first adapter part is a positioning hole, and the second adapter part is a positioning member matched with the positioning hole, or the second adapter part is a positioning hole, and the first adapter part is a positioning member matched with the positioning hole;Wherein, the positioning member and the positioning hole are gap matched, and when the hub rotating shaft rotates, the positioning member abuts against the inner wall forming the positioning hole.

[0011] Further, the first and second connecting parts are provided with a plurality of first and second connecting parts, respectively, which are spaced apart along the circumferential direction of the positioning part;

[0012] Further, the first and second connecting parts are provided with a plurality of first and second connecting parts, respectively, which are spaced apart along the circumferential direction of the positioning part;

[0013] Further, the positioning part is provided on the inner side of the connecting part;

[0014] Further, the positioning part is provided on the inner side of the connecting part;

[0015] Further, the positioning part is provided on the inner side of the connecting part;

[0016] Further, the first and second connecting parts are provided with a plurality of first and second connecting parts, respectively, which are spaced apart along the circumferential direction of the positioning part;

[0017] Further, the first and second connecting parts are provided with a plurality of first and second connecting parts, respectively, which are spaced apart along the circumferential direction of the positioning part;

[0018] Further, the first and second connecting parts are provided with a plurality of first and second connecting parts, respectively, which are spaced apart along the circumferential direction of the positioning part;

[0019] Further, the first and second connecting parts are provided with a plurality of first and second connecting parts, respectively, which are spaced apart along the circumferential direction of the positioning part;

[0020] Further, the first and second connecting parts are provided with a plurality of first and second connecting parts, respectively, which are spaced apart along the circumferential direction of the positioning part;

[0021] Further, the first and second connecting parts are provided with a plurality of first and second connecting parts, respectively, which are spaced apart along the circumferential direction of the positioning part;

[0022] Further, the first and second connecting parts are provided with a plurality of first and second connecting parts, respectively, which are spaced apart along the circumferential direction of the positioning part;

[0023] Further, the speed reducer comprises a rotating shaft, a first gear set in transmission connection with an output shaft of the motor, and a second gear set in transmission connection with the hub rotating shaft, the first gear set and the second gear set being in transmission connection with the rotating shaft respectively to transmit power of the first gear set to the second gear set and drive the hub rotating shaft to rotate.

[0024] Further, an end of the positioning part away from the connecting part is provided with a blocking part, the bracket is provided with a blocking slot for accommodating the blocking part, and the blocking part and a wall forming the blocking slot jointly enclose a blocking space for blocking sundries.

[0025] Further, the blocking space is in a bent structure.

[0026] Further, the blocking space comprises a first blocking cavity between an end face of the blocking part and a bottom wall forming the blocking slot, and a second blocking cavity between a side wall of the blocking part and a side wall forming the blocking slot, the width of the first blocking cavity being greater than that of the second blocking cavity.

[0027] A forklift truck comprises the driving wheel assembly of any one of the above.

[0028] Compared with the prior art, the utility model has at least the following advantages:

[0029] By cooperating the positioning part with the positioning hole, the positioning part can preliminarily position the position of the hub when the hub is connected with the hub rotating shaft, so that the deviation between the hub and the hub rotating shaft is reduced, the coaxiality between the hub and the hub rotating shaft is improved, the installation of the hub and the hub rotating shaft is facilitated, the deviation between the hub of the wheel and the hub rotating shaft is prevented to generate the deviation load, and the stability of the wheel rotation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 FIG. 1 is a structural schematic view of a driving wheel assembly of an embodiment of the utility model;

[0031] Figure 2 FIG. 2 is a planar sectional view of the driving wheel assembly of the embodiment of the utility model;

[0032] Figure 3 FIG. 3 is a method diagram of the A part in FIG. 1; Figure 2

[0033] Figure 4 FIG. 4 is an exploded schematic view of the driving wheel assembly of the embodiment of the utility model.

[0034] ​In the figure: 1, hub; 11, first adapter; 2, hub rotation axis; 21, connecting part; 211, protruding part; 212, strip-shaped hole; 22, positioning part; 221, second adapter; 222, blocking part; 3, first locking part; 31, second locking part; 32, avoiding slot; 4, motor; 41, motor casing; 411, opening; 412, fixed part; 42, motor end cover; 43, stator and rotor; 44, output shaft; 5, speed reducer; 51, speed reducer casing; 52, rotation axis; 53, first gear set; 531, first main gear; 532, first slave gear; 54, second gear set; 541, second main gear; 542, second slave gear; 6, bracket; 61, fixed part; 62, blocking slot; 63, blocking space; 631, first blocking cavity; 632, second blocking cavity. DETAILED DESCRIPTION

[0035] The utility model technical scheme will be further described in detail below in combination with the preferred embodiments and the drawings. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0036] As Figure 1 shown, a kind of driving wheel assembly corresponding to the preferred embodiments of the utility model includes hub 1 and hub rotation axis 2, can also include first locking part 3, motor 4, speed reducer 5 and bracket 6.

[0037] Further refer to Figure 3The hub 1 can be connected with a tire to form a wheel. The hub 1 can be provided with at least one first connecting part 11, and preferably a plurality of first connecting parts 11. The plurality of first connecting parts 11 can be arranged in a circumferential direction of the hub 1, and specifically can be arranged in a ring shape. The first connecting part 11 can be a positioning hole or a positioning member, and an axis of the first connecting part 11 is parallel to an axis of the hub 1. The positioning hole can be a through hole penetrating through the hub 1, or a blind hole. When the positioning hole is a blind hole, the positioning hole is recessed from an inner side of the hub 1. The positioning member can be a positioning column protruding towards the outside. The inner side of the hub 1 is a side of the hub 1 close to the support 6, and the outer side of the hub 1 is a side of the hub 1 away from the support 6.

[0038] Further referring to Figure 2 and Figure 3 The hub rotating shaft 2 is fixedly connected with the hub 1, and can rotate under the driving of the motor 4 through the transmission of the speed reducer 5, thereby driving the hub 1 to rotate. The hub rotating shaft 2 includes a connecting part 21 and a positioning part 22, and the axes of the connecting part 21 and the positioning part 22 can coincide with the axis of the hub rotating shaft 2. In order to facilitate the preparation of the hub rotating shaft 2, the connecting part 21 and the positioning part 22 can be an integral structure, thereby the hub rotating shaft 2 can be formed by one-time molding of a mold, improving the preparation efficiency of the hub rotating shaft 2 and reducing the preparation cost of the hub rotating shaft 2.

[0039] The connecting portion 21 is connected with the wheel hub 1. Specifically, the wheel hub 1 is provided with a through hole which is adapted to the connecting portion 21 and the axis of the through hole coincides with the axis of the wheel hub 1, and the through hole can be used to accommodate the connecting portion 21 so that the wheel hub 1 is sleeved on the connecting portion 21. The positioning portion 22 is connected with at least one second matching portion 221. The axis of the second matching portion 221 is parallel to the axis of the wheel hub 1, that is, the axes of the first matching portion 11, the second matching portion 221 and the wheel hub 1 are parallel to each other. The second matching portion 221 can be matched with the first matching portion 11 to position the connection of the wheel hub 1 and the connecting portion 21. Specifically, when the first matching portion 11 is a positioning hole, the second matching portion 221 is a positioning member which can be matched with the positioning hole; when the first matching portion 11 is a positioning member, the second matching portion 221 is a positioning hole which can be matched with the positioning member. When the first matching portion 11 is matched with the second matching portion 221, the positioning member penetrates into the positioning hole so that the first matching portion 11 and the second matching portion 221 form an axial hole cooperation and can realize positioning when the wheel hub 1 is connected with the connecting portion 21. When the wheel hub 1 produces axial offset relative to the connecting portion 21, the wall forming the positioning hole will abut against the positioning member, thereby limiting the movement between the wheel hub 1 and the connecting portion 21, thereby preventing axial offset between the wheel hub 1 and the connecting portion 21 and improving the coaxiality between the wheel hub 1 and the connecting portion 21, that is, the coaxiality between the wheel and the wheel hub rotating shaft 2 can be improved, and the stability of the rotation of the wheel and the wheel hub 1 rotating shaft 52 is ensured. The positioning portion 22 can be a disc-shaped structure with a radial cross-sectional area larger than that of the connecting portion 21, for example, the positioning portion 22 is a flange plate. The above-mentioned coaxiality is ensured, which can firstly avoid the phenomenon that the axial inclination is too large during installation, resulting in invalid installation; secondly, during the rotation of the wheel, the amount of load deviation of the wheel is small, which ensures that the shape of the wheel hub rotating shaft 2 is small in deformation amount during long-term use, thereby prolonging the service life. In this embodiment, the first matching portion 11 is taken as the positioning hole and the second matching portion 221 is taken as the positioning member for description.

[0040] In order to facilitate the installation of the wheel hub 1, the second matching portion 221 can be fixedly connected with the positioning portion 22 and form a clearance fit with the first matching portion 11. The fixed connection of the second matching portion 221 with the positioning portion 22 can ensure the position of the second matching portion 221. The second matching portion 221 and the first matching portion 11 may

[0041] In addition, the positioning portion 22 can be arranged inside the connecting portion 21 to facilitate the installation of the wheel hub 1. By arranging the second connecting portion 221 inside the connecting portion 21, i.e. at the end of the wheel hub rotation shaft 2 close to the outside, the wheel hub 1 can be sleeved on the connecting portion 21 from the outside, thereby reducing the risk of interference between the wheel hub 1 and other components in the driving wheel assembly during installation, and facilitating the installation of the wheel hub 1.

[0042] In some embodiments, a plurality of second connecting portions 221 can be arranged, and the plurality of second connecting portions 221 can be distributed along the circumference of the positioning portion 22. The plurality of second connecting portions 221 can be used to position multiple positions of the wheel hub 1, thereby improving the installation accuracy of the wheel hub 1 and improving the coaxiality between the wheel hub 1 and the wheel hub rotation shaft 2. In addition, the wheel hub rotation shaft 2 can generate a torsion force when rotating, and the wheel hub rotation shaft 2 can apply the torsion force to the plurality of second connecting portions 221 fixedly connected thereto. When the wheel hub rotation shaft 2 rotates, the second connecting portions 221 can abut against the wall forming the first connecting portion 11, thereby dispersing the torsion force generated by the wheel hub rotation shaft 2 to the plurality of first connecting portions 11, so that the stress on each part of the wheel hub rotation shaft 2 and the second connecting portions 221 is uniform, and the wheel hub rotation shaft 2 can withstand a larger rotational torsion force.

[0043] The first locking member 3 is used to connect with the connecting portion 21 and to press and fix the wheel hub 1, so that the wheel hub 1 remains relatively fixed with the connecting portion 21 of the wheel hub rotation shaft 2, and the wheel hub rotation shaft 2 can drive the wheel hub 1 to rotate. The first locking member 3 and the positioning portion 22 can be arranged on opposite sides of the wheel hub 1, and the first locking member 3 can clamp and fix the wheel hub together with the positioning portion 22 to fix the wheel hub 1 to the wheel hub rotation shaft 2. Specifically, one end of the connecting portion 21 penetrates through the wheel hub 1 and forms a protruding portion 211 protruding outwardly from the wheel hub 1. The first locking member 3 is fixedly connected with the protruding portion 211 and applies a pressing force to the wheel hub 1, so that the wheel hub 1 is clamped and fixed by the first locking member 3 and the positioning portion 22 on both sides of the wheel hub 1. The first locking member 3 can be threadedly connected with the protruding portion 211. For example, the first locking member 3 is a locking nut, and the protruding portion 211 is formed with external threads matched with the locking nut. By screwing the first locking member 3, the first locking member 3 is gradually moved to abut against and press the wheel hub 1.

[0044] To improve the fixing effect of the first locking member 3 on the wheel hub 1, the wheel hub 1 can be in close contact with the positioning portion 22. For example, the connecting surface of the wheel hub 1 for connecting with the positioning portion 22 is a plane, and the outer side surface of the positioning portion 22 facing the wheel hub 1 is also a plane. The connecting surface of the wheel hub 1 is flush with the outer side surface of the positioning portion 22, so that the locking force applied by the first locking member 3 to the wheel hub 1 can be uniformly distributed to the outer side surface of the positioning portion 22, thereby improving the fixing effect of the first locking member 3 on the wheel hub 1.

[0045] Further referring to Figure 2 In the process of wheel rotation, vibration may be generated due to bumps on the ground and the like, so that the cooperation between the first locking member 3 and the protruding portion 211 may be loose, and then the first locking member 3 moves relative to the protruding portion 211 along the axial direction of the hub rotating shaft 2, affecting the fixing effect of the hub 1. In order to avoid the problem that the first locking member 3 moves relative to the protruding portion 211 along the axial direction of the hub rotating shaft 2 and then is loose, the protruding portion 211 is connected with a second locking member 31, for example, the protruding portion 211 is provided with a strip-shaped hole 212 extending along the radial direction of the hub rotating shaft 2 and communicating with the avoiding groove 32, and the second locking member 31 penetrates into the strip-shaped hole 212 and can abut against the first locking member 3, so as to limit the relative movement between the first locking member 3 and the protruding portion 211 along the axial direction of the hub rotating shaft 2. Among them, the strip-shaped hole 212 is a hole closed in the circumference, so that the wall forming the strip-shaped hole 212 can limit the second locking member 31 along the circumferential direction of the strip-shaped hole 212.

[0046] The second locking member 31 can abut against the outer wall of the first locking member 3 to limit the relative movement between the first locking member 3 and the protruding portion 211 along the axial direction of the hub rotating shaft 2, and avoid the first locking member 3 and the protruding portion 211 from being loose. Alternatively, as a preferred embodiment, the second locking member 31 penetrates into the first locking member 3, specifically, the first locking member 3 is provided with an avoiding groove 32 extending along the radial direction of the hub rotating shaft 2, the avoiding groove 32 is used for avoiding the second locking member 31, so that the second locking member 31 can penetrate into the avoiding groove 32 and the strip-shaped hole 212, when the first locking member 3 and the protruding portion 211 have a tendency to move relative to each other along the axial direction of the hub rotating shaft 2, the second locking member 31 will abut against the wall forming the avoiding groove 32 and the wall forming the strip-shaped hole 212, and then limit the relative movement between the first locking member 3 and the protruding portion 211 along the axial direction of the hub rotating shaft 2, and avoid the first locking member 3 and the protruding portion 211 from being loose. Among them, the second locking member 31 can be a locking pin or a wedge-shaped block, in addition, the second locking member 31 can also adopt other structures, for example, at least a part of the second locking member 31 can be accommodated in the avoiding groove 32, and another part can be accommodated in the strip-shaped hole 212, so that when the first locking member 3 moves relative to the protruding portion 211 along the axial direction of the hub rotating shaft 2, the second locking member 31 can abut against the first locking member 3 and the protruding portion 211, so as to limit the relative movement of the first locking member 3 and the protruding portion 211.

[0047] Further referring to Figure 3To avoid the impurities such as stones from the outside entering the inside of the driving wheel assembly and affecting the operation of the internal parts of the driving wheel assembly when the driving wheel assembly moves, the positioning portion 22 of the hub rotating shaft 2 is provided with a blocking portion 222 at the end opposite to the connecting portion 21, the bracket 6 is provided with a blocking groove 62 for accommodating the blocking portion 222, and the blocking portion 222 and the wall forming the blocking groove 62 jointly form a blocking space 63 for blocking the impurities such as stones. When the impurities such as stones from the outside move to the inside of the positioning portion 22, they will move into the blocking space 63 and be kept in the blocking space 63, so as to avoid the impurities such as stones from further moving to the inside of the driving wheel assembly. Preferably, the blocking space 63 has a bending structure, for example, a serpentine structure or a "U" shape structure. The bending structure of the blocking space 63 can effectively block the impurities when they move to the bending portion of the blocking space 63, thereby improving the blocking effect of the blocking space 63 on the impurities.

[0048] The blocking space 63 can include a first blocking cavity 631 provided between the end face of the blocking portion 222 and the bottom wall forming the blocking groove 62, and a second blocking cavity 632 provided between the side wall of the blocking portion 222 and the side wall forming the blocking groove 62. The second blocking cavity 632 can be provided with two, one of which is close to the outer edge of the bracket 6, and the other is away from the outer edge of the bracket 6.

[0049] The width of the first blocking cavity 631 can be greater than the width of the second blocking cavity 632. The width of the first blocking cavity 631 is the distance between the end face of the blocking portion 222 and the bottom wall forming the blocking groove 62, and the width of the second blocking cavity 632 is the distance between the side wall of the blocking portion 222 and the corresponding side wall forming the blocking groove 62. Therefore, by providing the first blocking cavity 631 with a larger width, the machining error of the bracket 6 in obtaining the blocking groove 62 and the blocking portion 222 can be compensated, and in addition, the space of the first blocking cavity 631 can be larger, which can be used to store more impurities and avoid the impurities from entering the inside of the driving wheel assembly.

[0050] When the impurities from the outside move to the inside of the positioning portion 22, they will first move into the second blocking cavity 632 close to the outer edge of the bracket 6 for a first blocking, and then move to the first blocking cavity 631. The further movement of the impurities will be blocked by the second blocking cavity 632 away from the outer edge of the bracket 6, so as to keep the impurities in the first blocking cavity 631.

[0051] Further referring to Figure 2 and Figure 4The motor 4 and the wheel hub 1 are located on the same side of the support 6 in the vertical direction to save installation space. The motor 4 includes a motor shell 41 having an opening 411, a motor end cover 42 for plugging the opening 411, an output shaft 44, and a stator-rotor 43. The stator-rotor 43 is loaded into the motor shell 41 from the opening 411, and then the opening 411 is plugged with the motor end cover 42 to seal the stator-rotor 43 in the motor shell 41. The stator in the stator-rotor 43 is fixedly connected to the inner wall of the motor shell 41, and the rotor in the stator-rotor 43 is installed on the output shaft 44 of the motor 4 to drive the output shaft 44 to rotate. The motor shell 41 is provided with a fixing portion 412, which can be connected to the fixing member 61 to achieve the installation and fixation of the motor shell 41. For example, the motor shell 41 is fixedly installed on the support 6 through the fixing member 61.

[0052] In some specific embodiments, the motor 4 is located directly above the wheel, i.e., directly above the wheel hub 1. When the wheel is in contact with the ground, the wheel can support the components in the driving wheel assembly. By arranging the motor 4 directly above the wheel, the direction of the gravity of the motor 4 can coincide with the direction of the supporting force of the wheel, thereby avoiding the deviation of the direction of the gravity of the motor 4 from the direction of the supporting force of the wheel to cause the driving wheel assembly to tilt, and improving the stability of the wheel when moving.

[0053] Further referring to Figure 2 and Figure 4 The reducer 5 includes a reducer shell 51 and a reduction unit installed in the reducer shell 51. The reducer shell 51 is installed on the support 6, and the reducer shell 51 and the motor shell 41 can be installed on opposite sides of the support 6. The reducer shell 51 is provided with a through hole for cooperating with the fixing member 61, and the through hole and the fixing portion 412 of the motor shell 41 can be connected to the same position of the support 6. At this time, the fixing member 61 can pass through the through hole of the reducer shell 51, the support 6, and be fixedly connected with the fixing portion 412 of the motor shell 41 to fix and install the reducer shell 51 and the motor shell 41 on the support 6. Among them, the through hole on the reducer shell 51 can be provided with a plurality of through holes, and the fixing portion 412 of the motor shell 41 and the fixing member 61 can be correspondingly provided with a plurality of fixing portions 412 and a plurality of fixing members 61. The fixing portion 412 can be formed with a threaded hole, and the fixing member 61 is a screw. After the fixing member 61 passes through the reducer shell 51 and the support 6, it is threadedly connected with the motor shell 41.

[0054] Further referring to Figure 2The speed reduction unit comprises a rotating shaft 52, a first gear set 53 in driving connection with the output shaft 44 of the motor 4, and a second gear set 54 in driving connection with the hub rotating shaft 2. The first gear set 53 and the second gear set 54 are respectively in driving connection with the rotating shaft 52, so as to transmit the power of the first gear set 53 to the second gear set 54 and drive the hub rotating shaft 2 to rotate. Specifically, the first gear set 53 comprises a first main gear 531 and a first slave gear 532 in meshing connection with the first main gear 531. The first main gear 531 is fixedly sleeved on the output shaft 44 of the motor 4 and can rotate under the driving of the output shaft 44, thereby driving the first slave gear 532 in meshing connection therewith to rotate. The first slave gear 532 is fixedly sleeved on the rotating shaft 52, thereby driving the rotating shaft 52 to synchronously rotate. The second gear set 54 comprises a second main gear 541 and a second slave gear 542 in meshing connection with the second main gear 541. The second main gear 541 is fixedly connected with the rotating shaft 52, for example, the second main gear 541 is in one-piece structure with the rotating shaft 52, thereby enabling the second main gear 541 to synchronously rotate with the rotating shaft 52. The second main gear 541 drives the second slave gear 542 in meshing connection therewith to rotate. The second slave gear 542 is fixedly sleeved on the hub rotating shaft 2, so as to drive the hub rotating shaft 2 to rotate, the hub rotating shaft 2 drives the hub 1 to rotate, thereby enabling the wheel to rotate. The speed reduction ratio of the speed reduction unit can be adjusted by adjusting the gear ratio of the first main gear 531 and the first slave gear 532 and the gear ratio of the second main gear 541 and the second slave gear 542.

[0055] The utility model still improves a kind of fork truck, including the drive wheel subassembly of above.

[0056] The above-described embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope. It should be pointed out that, for ordinary skilled person in the art, without departing from the concept of the utility model, a number of variations and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A drive wheel assembly, characterized by It includes: A hub (1) provided with at least one first adapter (11); A hub rotating shaft (2) comprising a connecting part (21) and a positioning part (22), the positioning part (22) is connected with at least one second adapter (221), the first adapter (11) is matched with the second adapter (221) to position the connection of the hub (1) and the connecting part (21); A first locking member (3) connected with the connecting part (21) and used for pressing and fixing the hub (1) to enable the hub rotating shaft (2) to drive the hub (1) to rotate.

2. The drive wheel assembly of claim 1, wherein, The first adapter (11) is a positioning hole, and the second adapter (221) is a positioning member matched with the positioning hole, or the second adapter (221) is a positioning hole, and the first adapter (11) is a positioning member matched with the positioning hole; wherein the positioning member is gap-fitted with the inner wall forming the positioning hole, and when the hub rotating shaft (2) rotates, the positioning member abuts against the inner wall.

3. The drive wheel assembly of claim 2, wherein, The first adapter (11) and the second adapter (221) are respectively provided with a plurality of first adapters (11) and a plurality of second adapters (221) which are respectively distributed along the circumference of the positioning part (22); And / or, the first adapter (11), the second adapter (221) and the axis of the hub (1) are parallel to each other.

4. The drive wheel assembly of claim 1, wherein, The positioning part (22) is arranged on the inner side of the connecting part (21); And / or, the positioning part (22) and the connecting part (21) are of an integrated structure.

5. The drive wheel assembly of claim 1, wherein, The positioning part (22) is a disc-shaped structure with a radial cross-sectional area larger than that of the connecting part (21), and the positioning part (22) is in close contact with the hub (1).

6. The drive wheel assembly of claim 1, wherein, The first locking member (3) and the positioning part (22) are arranged on opposite sides of the hub (1), and the first locking member (3) and the positioning part (22) jointly clamp and fix the hub (1).

7. The drive wheel assembly of claim 6, wherein, One end of the connecting part (21) penetrates through the hub (1) and forms a protruding part (211) protruding outwardly from the hub (1); the first locking member (3) is fixedly connected with the protruding part (211) to enable the first locking member (3) and the positioning part (22) to jointly clamp and fix the hub (1).

8. The drive wheel assembly of claim 7, wherein, Further comprising a second locking member (31), the protruding part (211) is provided with a strip-shaped hole (212) extending radially along the hub rotating shaft (2); the second locking member (31) penetrates into the strip-shaped hole (212) and can abut against the first locking member (3) to limit the relative movement of the first locking member (3) and the protruding part (211) along the axial direction of the hub rotating shaft (2).

9. The drive wheel assembly of claim 8, wherein, The first locking member (3) is provided with an avoidance groove (32) extending radially along the hub rotating shaft (2), the avoidance groove (32) is communicated with the strip-shaped hole (212), and the second locking member (31) penetrates into the avoidance groove (32) and the strip-shaped hole (212).

10. The drive wheel assembly of claim 1, wherein, The motor (4) comprises a motor shell (41) having an opening (411), a motor end cover (42) for blocking the opening (411), and a stator-rotor (43) which is installed in the motor shell (41) from the opening (411).

11. The drive wheel assembly of claim 10, wherein, The motor (4) is arranged directly above the hub (1).

12. The drive wheel assembly of claim 10, wherein, The speed reducer (5) comprises a speed reducer shell (51), the speed reducer shell (51) and the motor shell (41) are installed on opposite sides of the support (6); the fixing member (61) passes through the speed reducer shell (51), the support (6) and the motor shell (41) in sequence, so that the speed reducer shell (51) and the motor shell (41) are fixedly installed on the support (6).

13. The drive wheel assembly of claim 12, wherein, The speed reducer (5) comprises a rotating shaft (52), a first gear set (53) which is in transmission connection with an output shaft (44) of the motor (4), and a second gear set (54) which is in transmission connection with the hub rotating shaft (2), the first gear set (53) and the second gear set (54) are respectively in transmission connection with the rotating shaft (52), so that the power of the first gear set (53) is transmitted to the second gear set (54) and drives the hub rotating shaft (2) to rotate.

14. The drive wheel assembly of claim 12, wherein, The blocking part (222) is provided at one end of the positioning part (22) away from the connecting part (21), the support (6) is provided with a blocking groove (62) for accommodating the blocking part (222), and the blocking part (222) and the wall forming the blocking groove (62) jointly form a blocking space (63) for blocking sundries.

15. The drive wheel assembly of claim 14, wherein, The blocking space (63) has a bent structure.

16. The drive wheel assembly of claim 15, wherein, The blocking space (63) comprises a first blocking cavity (631) provided between an end face of the blocking part (222) and a bottom wall forming the blocking groove (62), and a second blocking cavity (632) provided between a side wall of the blocking part (222) and a side wall forming the blocking groove (62), and the width of the first blocking cavity (631) is greater than the width of the second blocking cavity (632).

17. A fork lift truck characterised by The drive wheel assembly comprises the drive wheel assembly according to any one of claims 1-16.

Images