DE102019200932A1 - Drive axle for an industrial truck, exchange kit for a drive axle and industrial truck with the drive axle - Google Patents

Abstract

Electrically powered counterbalance trucks are often powered by two drive units that are installed as a front axle in the vehicle. It is an object of the invention to provide a drive axle which is characterized by simple assembly and accessibility. For this purpose, a drive axle 1 for an industrial truck, with two separate single wheel drives 3a, b for driving one vehicle wheel each, the two single wheel drives 3a, b each have a drive device 6a, b, a transmission device 7a, b and a braking device 8a, b, the drive device 6a, b being coupled in terms of drive technology to the associated transmission device 7a, b for transmitting a drive torque, and wherein the braking devices 8a , b for the transmission of a braking torque is operatively connected to the associated drive device 6a, b and / or transmission device 7a, b, the two brake devices 8a, b being arranged on mutually facing sides of the independent wheel drives 3a, b, with at least one connecting section 9, the two independent drives 3a, b over the connecting section 9 are rigidly connected to one another, proposed, the connecting section 9 having at least one detachable cover component 10, the cover component 10 covering the two braking devices 8a, b in an assembled state and access to the two braking devices 8a, b in a disassembled state releases.

Description

The invention relates to a drive axle for an industrial truck with the features of the preamble of claim 1. Furthermore, the invention relates to an interchangeable set for the drive axle and an industrial truck with the drive axle.

Electrically powered counterbalance trucks are often powered by two drive units that are installed as a front axle in the vehicle. Such travel drives usually have a transmission, an electric machine and a brake disk set for each drive unit, the two brake disk packs being able to be actuated, for example, by a common actuation. The components mentioned are housed in a common housing assembly and firmly connected to a unit.

The publication DE 102 25 038 B4 , which is probably the closest prior art, discloses a drive axle with an integrated brake for electric motor-driven industrial trucks, with a single-wheel drive for each of the two drive wheels, each single-wheel drive comprising a motor, a transmission and a braking device, with a common for actuating both braking devices Actuating unit with an actuator is provided, wherein the actuator is designed as a ball ramp actuator.

The invention has for its object to propose a drive axle of the type mentioned, which is characterized by simple assembly and accessibility.

This object is achieved by a drive axle with the features of claim 1, an interchangeable set with the features of claim 8 and an industrial truck with the features of claim 9. Preferred or advantageous embodiments of the invention result from the subclaims of the following description and / or the attached figures.

The invention relates to a drive axle which is designed and / or suitable for an industrial truck. In particular, the drive axle is designed as a driven and / or brakable vehicle axle, preferably a front axle, of the industrial truck. The drive axle is preferably designed as an electrically driven vehicle axle.

The drive axle has two separate individual wheel drives, which are each designed and / or suitable for driving a vehicle wheel. In particular, the vehicle wheels of the drive axle can be driven and / or braked independently of one another by the two separate individual wheel drives. For this purpose, the two individual wheel drives each have a drive device, a gear device and a brake device. The drive devices are preferably each designed as an electric drive machine, in particular an electric motor. The drive devices are each coupled in terms of drive technology to the associated transmission device in order to transmit a drive torque to the associated vehicle wheel. In particular, the transmission device has at least one transmission stage, the drive torque being translated via the transmission stage to the associated drive wheel. The gear device can be designed as a planetary gear or a spur gear.

The braking device is operatively connected to the associated drive device and / or the associated transmission device for transmitting a braking torque to the associated vehicle wheel. In a closed state of the braking device, the braking torque is transmitted to the associated drive wheel via the associated drive device and / or the associated gear device. The braking devices can optionally be operated jointly and / or independently of one another. In particular, the two braking devices can be actuated electrically and / or mechanically and / or hydraulically.

The two braking devices are arranged on mutually facing sides of the independent wheel drives. The two braking devices are preferably arranged on mutually facing end faces of the respectively associated drive device. In particular, the two braking devices and / or the two drive devices and / or the two transmission devices are arranged coaxially and / or concentrically to a main axis. The two individual wheel drives are preferably spaced apart from one another in the axial direction with respect to the main axis, so that in particular the two braking devices are separated from one another by a distance.

The drive axle has at least or exactly one connecting section, the two individual wheel drives being rigidly connected to one another via the connecting section. In particular, the connecting section is used to transmit forces and / or moments acting on the drive axle, which may arise during operation of the industrial truck. The two individual wheel drives, in particular the two drive devices, are preferably detachably connected to one another via the connecting section. The two individual wheel drives are preferably held at a distance from one another via the connecting section.

In the context of the invention it is proposed that the connecting section has at least one detachable cover component. In particular, the cover component is connected to both individual wheel drives. In an assembled state, the cover component covers the two braking devices and, in a disassembled state, gives access to the two braking devices. In principle, the cover component is completely removed in the disassembled state. Alternatively, however, the cover component can also be pivotally attached to the drive axis, so that the cover component can be pivoted between an open and a closed position. In particular, the cover component is arranged towards and / or in the direction of travel towards a vehicle underside and / or can be removed.

The advantage of the invention is that the accessibility of the braking device for repair and / or maintenance purposes is significantly improved by the cover component. This means that the brake devices or parts of the brake devices can be replaced when the drive axle is installed, without having to remove the entire drive axle or the respective individual wheel drive. As a result, maintenance and repair costs can be reduced.

In a preferred embodiment of the invention it is provided that the connecting section is formed by the at least or exactly one cover component. In particular, the cover component connects the two independent wheel drives to one another. The cover component for connecting the two independent wheel drives is detachably connected to them. In particular, the cover component is connected to the two drive devices in the assembled state, the two brake devices being simultaneously covered by the cover component and / or shielded from the environment. In the disassembled state of the cover component, the two independent wheel drives are separated from one another and / or the two braking devices are accessible.

Thus, a drive axle is proposed which is characterized by a particularly simple and compact design, with access to the two braking devices being realized in a particularly simple manner. In addition, a connection between the two independent wheel drives can be broken, so that, for example, one of the two independent wheel drives can be exchanged particularly easily.

In a further preferred embodiment it is provided that the connecting section has at least or exactly one further cover component. The cover component and the at least one further cover component are preferably of identical construction. The connecting section can have a plurality of the cover components, for example more than two, preferably more than four, in particular more than six, of the cover components. However, the connecting section particularly preferably has exactly two of the cover components. The cover components can be assembled in a segment-like manner in the axial direction and / or in the circumferential direction with respect to the main axis, so that a closed housing accommodating the braking devices is formed in an assembled state of all cover components.

The two single wheel drives are detachably connected to one another via the cover components. In particular, each of the cover components is detachably, in particular positively and / or non-positively, connected to the one single-wheel drive and detachably, in particular positively and / or non-positively, to the other single-wheel drive. Alternatively or optionally in addition, the cover components are detachably, in particular positively and / or non-positively, connected to one another. The cover components can thus be solved and disassembled independently of one another.

It is therefore a consideration of the invention to propose a drive axle which is characterized by a particularly simple assembly of the connecting section. In addition, it can be ensured that when one of the cover components is dismantled, access to the braking devices is enabled and, at the same time, the two individual wheel drives are held together by the at least one further cover component.

In a specific constructive implementation, it is proposed that the connecting section be formed by exactly two of the cover components, the two cover components each being designed as a hollow cylinder half. In particular, the two cover components are designed as hollow cylindrical half shells. The two hollow cylinder halves are preferably supported with their inner circumference on an outer circumference of the independent wheel drives, preferably in a form-fitting manner. The two hollow cylinder halves are connected to one another in the circumferential direction around the main axis, so that the two hollow cylinder halves form a hollow cylindrical housing for receiving the two braking devices. The two hollow cylinder halves are preferably connected to one another in a positive and / or non-positive manner. The hollow cylindrical housing is particularly preferably arranged coaxially and / or concentrically to the main axis. During assembly, the two individual wheel drives, in particular the two braking devices, can be arranged between the two hollow cylinder halves. The two hollow cylinder halves are then joined together and / or with the two Independent wheel drives connected so that the hollow cylinder halves are captively mounted on the drive axle.

A drive axle is thus proposed which is distinguished by a particularly simple assembly, the assembly effort being significantly reduced by the two hollow cylinder halves. In addition, the dismantling of one of the two hollow cylinder halves allows particularly generous access to the two braking devices.

In a further specification, it is provided that the at least or exactly one cover component per individual drive has a positive locking contour. In particular, all cover components have the form-fitting contour. The form-fitting contour can be designed as an elevation or depression. In particular, the form-fitting contour extends in the circumferential direction, in particular continuously, with respect to the main axis. The two individual wheel drives each have a counter contour, which is complementary, in particular, to the form-fitting contour. The counter contour preferably forms a contour partner to the form-fitting contour. In particular, the cover components have the form-fitting contour on a radial inside. The two single wheel drives, however, have the opposite contour on a radial outside. In the assembled state, the form-fitting contour of the at least one cover component engages in a form-fitting manner with the corresponding counter-contour of the respective individual wheel drive. In particular, the form-fitting contour forms a form-fitting connection with the counter-contour at least in the axial direction with respect to the main axis.

It is a consideration of the invention to propose a drive axle which is characterized by a particularly high rigidity. Due to the positive connection of the at least one cover component to the two single wheel drives, the forces and / or moments acting on the drive axle can be absorbed particularly well by the latter.

It is particularly preferably provided that the interlocking contours are each designed as a web section and the counter contours are each designed as a groove section complementary to the associated web section. In particular, the web section is directed radially inwards in the radial direction with respect to the main axis. The groove section is preferably designed as a groove running around the main axis. The web section and the groove section can have a rectangular or trapezoidal contour when viewed in cross section. In particular, the web section can be inserted into the groove section when the cover component is installed.

It is therefore a consideration of the invention to propose a drive axle which is characterized by a high level of assembly reliability. In addition, the additional form-fit connection of the cover components and the individual wheel drives enables a drive axle to be implemented, which in particular can absorb bending moments and also stiffens the vehicle structure.

In a further preferred implementation it is provided that the drive axle has a plurality of fastening means. The fastening means are preferably designed as screws. The at least or exactly one, preferably all cover component (s) are non-positively connected to at least one of the individual wheel drives via at least or exactly one of the fastening means. In particular, the cover component (s) and the individual wheel drives have a plurality of fastening means receptacles, in particular bores, for receiving one of the fastening means in each case. The cover component (s) are fixed to the individual wheel drives via the fastening means, the fastening means being anchored in the respective fastening means receptacle of the individual wheel drives. A drive axle is thus proposed, which is characterized by particularly simple assembly and disassembly of the cover components.

Alternatively or optionally additionally, the cover components are non-positively connected to one another via at least or exactly one of the fastening means. The fastening means connect the cover components to one another and ensure that the cover components are firmly fixed on the individual wheel drives. In particular, two adjacent cover components are connected to one another via at least or exactly one common fastening means. The cover components can each have a fastening flange which extends radially outward, with one fastening means being guided through the respective fastening flange of two adjacent cover components. The fastening means can each be anchored in one of the fastening flanges. Alternatively, however, it can also be provided that the fastening means is guided through the fastening flanges and is secured at the end by a securing means, in particular a screw nut.

It is a consideration of the invention to propose a drive axle which is characterized by high rigidity. The additional connection of the cover components to one another enables a clamping connection to be realized between the connecting section and the individual wheel drives, which additionally increases the rigidity of the drive axle. Thus, a compact drive axle is proposed, which is particularly well suited to the Driving axis acting moments and forces can absorb.

Another object of the invention relates to an interchangeable set which is designed and / or suitable for the drive axle. Preferably, the drive axle is as previously described or designed according to one of the preceding claims.

The interchangeable set has at least or exactly a first and a second cover component set. In particular, the interchangeable set is used to set an axial width of the drive axle. For this purpose, the first cover component set has at least or exactly one cover component with a first axial width. The second cover component set has at least or exactly one cover component with a second axial width. In particular, the first and the second axial width are of different sizes. The first cover component set preferably has at least or exactly two of the cover components with the first component width and the second cover component set each has at least or exactly two of the cover components with the second overall width. All cover components of the first cover component set preferably have the first axial overall width and all cover components of the second cover component set have the second axial overall width. The axial widths are to be understood in relation to the main axis.

In a first assembly state, the two individual wheel drives are connected to one another via the at least one cover component of the first cover component set, so that a first track width of the drive axle, in particular of the vehicle wheels, is set. In particular, the first track width is defined by the first axial width. In a second assembly state, instead of the cover component of the first cover component set, the two individual wheel drives are connected to one another via the at least one cover component of the second cover component set, so that a second track width of the drive axle, in particular of the vehicle wheels, is set. In particular, the second track width is defined by the second axial width.

A drive axle is thus proposed which can be adjusted particularly simply with regard to its axial width (track width). The two independent wheel drives can thus be constructed identically or identically, and the distance between the two independent wheel drives can be set particularly easily by exchanging the cover components.

Another object of the invention relates to an industrial truck with the drive axle according to one of the preceding claims or as has already been described above. The industrial truck has a vehicle frame, the two individual wheel drives each being connected to the vehicle frame via a frame connection. In particular, the two independent wheel drives are detachably connected to the vehicle frame via the respective frame connection.

Due to the independent wheel drives connected via the connecting section, the connection between the drive axle and the vehicle frame and the vehicle frame itself can be carried out significantly more easily and cost-effectively, since the drive axle itself can absorb the forces and moments that are introduced into the vehicle by the vehicle wheels, for example .

In a further embodiment it is provided that the two single wheel drives each have a mast interface for connecting a lifting mast. The lifting mast is particularly preferably designed to receive a good to be transported. In particular, during a transport operation, a load torque can be transmitted to the drive axle via the mast interfaces and introduced into the vehicle frame via the frame connections.

By connecting the two independent wheel drives via the connecting section, in particular the cover components, the drive axle can thus absorb the load moment of the lifting mast, so that the vehicle frame itself can be made significantly lighter and less expensive. Since the vehicle usually has no load on the mast during repair or maintenance, the load torque that acts on the drive axle under these conditions is low, so that the at least one cover component can be easily installed again after the brake device has been replaced or serviced .

In a further preferred embodiment of the invention it is provided that the industrial truck is designed as a forklift. In particular, the industrial truck is designed as a four-wheel forklift.

• 1a,b in einer perspektivischen Darstellung eine Antriebsachse für ein Flurförderfahrzeug als ein Ausführungsbeispiel der Erfindung;
• 2 die Antriebsachse aus 1 in einer Schnittdarstellung;
• 3a,b,c die Antriebsachse aus 1 sowie deren Komponenten in verschiedenen Schnittdarstellungen.

Further features, advantages and effects of the invention result from the following description of preferred exemplary embodiments of the invention and the attached figures. These show:

• 1a, b a perspective view of a drive axle for an industrial truck as an embodiment of the invention;
• 2nd the drive axle 1 in a sectional view;
• 3a, b , c the drive axle 1 and their components in different sectional views.

The 1a and 1b each show a perspective view of a drive axle 1 in an installation situation, with the drive axle 1 on a vehicle frame 2nd of an industrial truck, not shown, is arranged. The industrial truck is designed, for example, as a forklift, with the drive axle 1 forms a driven front axle of the forklift.

The drive axle 1 has a first and a second electrically operated independent wheel drive 3a , b on, with the two independent drives 3a , b each via a frame connection 4a , b firm but detachable with the vehicle frame 2nd are connected. The two independent wheel drives 3a , b each serve to drive a vehicle wheel, not shown, the single wheel drives 3a , b an output flange for this 5a , b exhibit. The output flanges 5a , b each form a wheel hub for receiving one of the vehicle wheels.

The single wheel drives 3a , b each have a drive device 6a , b , a transmission device 7a , b as well as a braking device 8a , b on. The two drive devices 6a , b are each designed as an electrical machine, which drive technology with the associated transmission device 7a , b are coupled. The two drive devices 6a , b convert electrical energy into mechanical energy, using the transmission devices 7a , b translate the mechanical energy via at least one gear stage and a torque and a speed on the respective output flange 5a , b make available for the truck wheels of the industrial truck, not shown. The braking devices 8a , b can, for example, each be designed as an electrically ventilable spring pressure brake. The two braking devices 8a , b are related to a common major axis H each coaxially and / or concentrically on the associated drive device 6a , b arranged. Here are the two braking devices 8a , b , as in 1b shown, in each case on facing end faces of the two independent wheel drives 3a , b arranged. Are the braking devices 8a , b closed, a braking torque is applied via the associated drive device 6a , b and the associated transmission device 7a , b transferred to the corresponding vehicle wheel.

The two independent wheel drives 3a , b are each designed as a separate drive unit, which is in the axial direction with respect to the main axis H are spaced apart or separated and can be driven or braked independently of one another. Are two separate independent wheel drives 3a , b used, the frame connections 4a , b and the vehicle frame 2nd In addition to the wheel forces of the vehicle wheels, they also absorb bending moments due to the distance from the center of the wheel to the respective frame connection 4a , b as well as lateral forces acting on the vehicle wheel. The connection between the drive axle 1 and the vehicle frame 2nd as well as the vehicle frame 2nd itself must therefore be dimensioned so that the forces and moments that are introduced by the vehicle wheel can be absorbed.

The drive axle 1 has a connecting portion 9 on, with the two independent drives 3a , b over the connecting section 9 are connected to each other to form a rigid drive unit. For this purpose, the connection section 9 a first and a second cover component 10th , 11 , as a cover component and a further cover component, the two cover components 10th , 11 in an assembled state, as in 1a shown, the two braking devices 8a , b cover from the environment and at the same time the two single wheel drives 3a , b releasably connect with each other. Due to the connection of the two independent wheel drives 3a , b through the cover components 10th , 11 , the drive axle 1 Record bending moments and stiffen the vehicle structure. The vehicle frame 2nd can be carried out more easily and cost-effectively. The drive axle 1 thus combines the advantages of individual drives 3a , b with the advantages of a rigid axle. Thus it becomes a drive axle 1 proposed, which is characterized by a high maneuverability, since the two independent drives 3a , b can be driven independently. For example, the vehicle wheels can also be driven in opposite directions, which enables a very tight turning circle.

The two transmission devices 7a , b each have a mast interface 12a , b to connect a lifting mast, not shown. The vehicle wheels, not shown, transmit wheel forces and wheel torques into the associated transmission device 7a , b and thus into the drive axle 1 a. In addition, forces from the mast not shown in the mast interfaces 12a , b be initiated. The on the drive axle 1 acting forces and moments are at the frame connections 4a , b in the vehicle frame 2nd initiated, the bending moment due to the in the drive axis 1 The forces and moments introduced arise due to the connection between the two Cover components 10th , 11 mainly through the drive axle 1 can be included.

The two cover components 10th , 11 are each designed as a hollow cylinder half and form a hollow cylindrical housing in the assembled state. The first and the second cover component 10th , 11 are each positive and non-positive with the two single wheel drives 3a , b connected. In addition, the two cover components 10th , 11 at least non-positively connected. When the cover components 10, 11 are in the assembled state, they are fixed in place with the two individual wheel drives, so that the two individual wheel drives 3a , b are rigidly connected.

Because the braking devices 8a , b wear and tear in the operation of the vehicle is an exchange or maintenance of the braking devices 8a , b or at least parts of it are required. The drive axle according to the invention 1 enables an exchange of these components by the first and / or the second cover component 10th , 11 be dismantled and access to the two braking devices 8a , b is released. The brake devices are therefore very easily accessible during maintenance or repair, with the drive axle 1 in the vehicle or on the vehicle frame 2nd can remain installed. Neither the frame connections need to do this 4a , b still the mast interfaces 12a , b be solved.

1b shows the drive axle 1 , the cover member 10th is removed, and thereby access to the two braking devices 8a , b is released. Since the vehicle usually has no load on the fork of the mast during repair or maintenance, one is on the drive axle 1 acting load torque (bending moment) on the drive axle 1 works under these conditions, low. After replacement or maintenance of the braking devices 8a , b can the cover member 10th therefore be reassembled without having to align the single wheel drives 3a , b must be done. Optionally, the second cover component 11 also be removed. Thus, it is possible after the two cover components 10th , 11 have been removed, one of the two individual drives 3a , b exchange without the other also having to be removed.

An interchangeable set can optionally be provided, with a first cover component set covering the two cover components 10th , 11 comprises, the two cover components 10th , 11 have a first axial width. A second cover component set comprises two further cover components, not shown, which have a second axial width. The first and the second axial width are different, so that the distance between the two independent drives 3a , b or a track width of the vehicle wheels can be varied by the cover components of the second cover component set instead of the cover components 10th , 11 of the first cover component set.

2nd shows the drive axle in a partially sectioned longitudinal section 1 out 1 . The two cover components 10th , 11 are in the assembled state via fasteners 13 on the two single wheel drives 3a , b attached. For this purpose, the two drive devices 6a , b one housing section each 14a , b on, the two cover components 10th , 11 with their inner circumference on an outer circumference of the housing sections 14a , b are supported and on the fasteners 13 are fixed to these.

As in the detailed representation D you can see the fasteners 13 formed as screws, which from the outside through the cover components 10th , 11 in the corresponding housing section 14a , b are screwed in. Thus, the cover components 10th , 11 non-positively with the housing sections 14a , b connected and secured against losing. For dismantling the first and / or second cover component 10th , 11 the associated fasteners 13 solved and the corresponding cover component 10th , 11 then removed.

The 3a shows a detailed view of a cross section through the drive axle 1 . The two cover components 10th , 11 are about other fasteners 15 non-positively connected, in particular screwed. The fasteners 15 are designed as screws which, for example, through the one cover component 10th out and into the other cover component 11 are screwed in. The two cover components 10th , 11 each have a mounting flange 10a , 11a and a cylinder section 10b , 11b on, with the mounting flange 10a , 11a is directed radially outward with respect to the main axis and directly to the respective associated cylinder section 10b , 11b connects. The fasteners 15 are by appropriate mounting brackets of the two mounting flanges 10a , 11 a guided and connect the cover components 10th , 11 among themselves. The two cover components are in an assembled state 10th , 11 about the fasteners 15 clamped together so that the cover components 10th , 11 firmly on the respective housing sections 14a , b of the two drive devices 6a , b jam.

The 3b shows one of the two housing sections 14a , b in a longitudinal section and the 3c one of the two cover components 10th , 11 in a longitudinal section. The two cover components 10th , 11 each have a circumferential form-fitting contour on their inner circumference 16 on. The two Housing sections 14a , b each have on their outer circumference to the form-fitting contour 16 complementary counter contour 17th on. The form-fitting contour 16 is designed as a trapezoidal web, the opposite contour 17th is designed as a trapezoidal groove which extends all the way around the respective housing section 14a , b extends. In the assembled state of the two cover components 10th , 11 engages the form-fitting contour 16 in the opposite contour 17th one, so that at least one form fit in the axial direction with respect to the main axis H between the cover components 10th , 11 and the housing sections 14a , b is formed.

The two cover components 10th , 11 as well as the housing sections 14a , b point for receiving the fasteners 13 radially drilled holes 18a , b , in particular through holes. The holes 18a enforce the cover components 10th , 11 at the position of the positive locking contour 16 and the holes 18b penetrate the housing sections 14a , b at the point of the opposite contour 17th , wherein in the assembled state one fastener each 13 from outside through the hole 18a guided and in a corresponding internal thread of the hole 18b is screwed in. The fasteners 13 thus connect the cover components 10th , 11 with the housing sections 14a , b , the form-locking contours 16 and the associated counter contours 17th support this connection. A compact drive axle is created 1 , which can also absorb bending moments that are initiated by the vehicle wheels and the mast.

Reference list

1

Drive axle

2nd

Vehicle frame

3a, b

Independent wheel drives

4a, b

Frame connections

5a, b

Output flanges

6a, b

Drive devices

7a, b

Gear devices

8a, b

Braking devices

9

Connecting section

10th

first cover component

10a

Mounting flange

10b

Cylinder section

11

second cover component

11a

Mounting flange

11b

Cylinder section

12a, b

Mast interface

13

Fasteners

14a, b

Housing sections

15

other fasteners

16

Positive locking contour

17th

Counter contour

18a, b

Holes

D

Detailed view

H

Main axis

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 10225038 B4 [0003]

Claims (11)

Drive axle (1) for an industrial truck, with two separate single wheel drives (3a, b) for driving one vehicle wheel each, the two single wheel drives (3a, b) each having a drive device (6a, b), a transmission device (7a, b) and one Have braking device (8a, b), the drive device (6a, b) for transmission of a drive torque to the associated vehicle wheel being coupled in terms of drive technology to the associated transmission device (7a, b), and wherein the brake devices (8a, b) for transmission of a braking torque is operatively connected to the associated vehicle wheel with the associated drive device (6a, b) and / or the associated transmission device (7a, b), the two braking devices (8a, b) being arranged on mutually facing sides of the independent wheel drives (3a, b), with at least one connecting section (9), the two individual wheel drives (3a, b) being rigidly connected to one another via the connecting section (9), thereby g e indicates that the connecting section (9) has at least one detachable cover component (10), the cover component (10) covering the two brake devices (8a, b) in an assembled state and access to the two brake devices (8a, 8) in a disassembled state. b) releases. Drive axle (1) after Claim 1 , characterized in that the connecting section (9) is formed by the at least one cover component (10), the cover component (10) for connecting the two independent wheel drives (3a, b) being detachably connected to them. Drive axle (1) after Claim 1 or 2nd , characterized in that the connecting section (9) has at least one further cover component (11), the cover components (10, 11) releasably connecting the two individual wheel drives (3a, b) to one another and / or the cover components (10, 11) releasably are interconnected. Drive axle (1) after Claim 3 , characterized in that the connecting section (9) is formed by exactly two of the cover components (10, 11), the two cover components (10, 11) each being designed as a hollow cylinder half, the two hollow cylinder halves being connected to one another in the circumferential direction, so that a hollow cylindrical housing for receiving the two braking devices (8a, b) is formed. Drive axle (1) according to one of the preceding claims, characterized in that the at least one cover component (10) for each individual drive (3a, b) has a positive locking contour (15) and that the two individual wheel drives (3a, b) each have a counter contour (16) The interlocking contour (15) of the at least one cover component (10) interlocks with the corresponding counter contour (16) of the respective single wheel drive (3a, b). Drive axle (1) after Claim 5 , characterized in that the interlocking contours (15) are each designed as a web section and the counter contours (16) are each designed as a groove section complementary to the associated web section. Drive axle (1) according to one of the preceding claims, characterized by a plurality of fastening means (13, 15), the at least one cover component (10) being non-positively connected to one of the independent wheel drives (3a, b) via at least one of the fastening means (13) and / or that the cover components (10, 11) are non-positively connected to one another via at least one of the fastening means (15). Interchangeable set for a drive axle (1) according to one of the preceding claims, characterized in that the interchangeable set has at least a first and a second cover component set, the first cover component set having at least one cover component (10, 11) with a first axial width, and wherein the second Cover component set has at least one cover component with a second axial width, in a first assembly state the two individual wheel drives (3a, b) are connected to one another via the at least one cover component (10, 11) of the first cover component set, so that a first track width of the drive axle (1) is set, and wherein in a second assembly state the two individual wheel drives (3a, b) are connected to each other instead of the cover component (10, 11) of the first cover component set via the at least one cover component of the second cover component set, so that a second track width of the drive axle (1) is set is. Industrial truck with the drive axle (1) according to one of the preceding claims, characterized by a vehicle frame (2), the two individual wheel drives (3a, b) each having a frame connection (4a, b) and each via the associated frame connection (4a, b) are connected to the vehicle frame (2). Industrial truck after Claim 9 , characterized in that the two individual wheel drives (3a, b) each have a mast interface (12a, b) for connecting a lifting mast, a load torque being able to be introduced via the mast interfaces (12a, b) onto the drive axle (1) and via the Frame connections (4a, b) can be led out into the vehicle frame. Industrial truck after Claim 9 or 10th , characterized in that the industrial truck is designed as a forklift.

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