DE4215547C2 - Combination twist grip for two-hand operation of positively driven industrial trucks - Google Patents

Description

The invention relates to a combination rotary handle for two-hand operation of positively driven industrial trucks, in particular aisle trucks, with two signal generating means for simultaneous one-hand Triggering two control signals, the combination rotary handle with the free hanging end of a fixed on the other hand Two-joint rotary switch is rotatably coupled to a first and / or second joint rotatable and against rotation is spring-loaded and that the twists detecting first signal generating means for acknowledging the Two-hand control signal and second signal generating means for Triggering of at least one vehicle control signal is provided are (according to patent application P 41 11 675.5).

Known controls for industrial trucks are mostly functionally divided. As soon as such operation more than one vehicle function can be operated both hands of the operating personnel are required Lich. This means that the vehicle is steered at the same time foiled so that the operation of the vehicle functions in the Principle assumes the state of the vehicle.

Operating elements are also known, in which one Vehicle function, for example a drive command, via a Continuously operated rotary handle and another vehicle function, for example, lifting and lowering the load carrier by loading actuation of pressure or rocker switches is triggered in the Close range outside the twist grip. It follows for the operator the difficulty, either the twist handle or to operate the pressure or rocker switch, because last tere often when turning the twist grip outside of us area of the thumb usually intended for this come and can not be operated at the same time. There is a superposition of these vehicle functions or resulting simultaneous movements telt. Apart from that, such facilities mostly require a number of ge corresponding to the individual switches separated control circuits. Controls where pressure switches or push buttons already directly on the rotary handle, e.g. B. the front of the same, are arranged, close a stu function control.  

This is also the case with a Pi disclosed in DE-GM 78 22 523 plumb control device the case that consists of a T-shaped adjusting lever and a plurality of push buttons or dials arranged thereon lever exists, which are cumbersome to use and incorrect operation not exclude.

For positively driven industrial trucks, especially narrow tied forklifts, determine the accident prevention wrote that when moving on the shelf aisle both hands of the Be servant must be tied to signalers so that these not beyond the vehicle's outer contours while driving can be stretched into the aisle. It follows mostly the difficulty that the forced acknowledgment of Two-hand control only one hand to trigger actual Control commands for a horizontal or vertical vehicle movement remains. As a result, the operator for example, the forced acknowledgment with the left hand Two-hand control, meanwhile, with the right hand horizontal movements of the truck triggered become. To initiate the vertical lifting movements is the Operator forced at least with the control hand on one second, separate control element or a corresponding Si to encompass the encoder, which is usually on the other side of the Control panels are placed, which then forced a handle alternation of both hands requires, since then with the other hand must be acknowledged. Playtime-optimizing diagonal trips or movements are in such facilities locked out.

In a control element known from DE-OS 39 25 872 for industrial trucks is a multi-function rotary handle for stu windowless operation of a driving circuit on its circumference additionally with a separate signal transmitter for stepless and / or finely graduated actuation of the lift circuit equips, with which driving gear and / or lifting gear trigger simultaneously or overlaid. This operation nungselement probably has great for free-moving industrial trucks Benefits, however, is due to the lack of a compulsory acknowledgment Two-hand operation for positively driven aisle trucks not suitable.

The invention is based on the object to form a generic combination handle so that  despite compulsory Acknowledgment of the accident prevention regulations written two-hand command a simultaneous triggering of several Control commands for both the driving unit is also possible for at least one load manipulation unit, without the need to ir hands to have to release from the combination rotary handle at any time.

To solve this problem, the invention proposes that depends on the number, type and degrees of freedom vehicle-internal load handler at least one other finger-operated signal transmitter for triggering at least one additional control signal can be arranged in the combination rotary handle. The Integration of additional signal transmitters in the combination rotary handle permits control commands for complex load handling devices with a variety of degrees of freedom as well as an equal timely control commands for several load suspension devices with a limited number of degrees of freedom without the hassle and time-consuming grasping of hands on different signal heads while complying with the accident prevention regulations and exclusion of any danger to the operator. The As a result, he can focus more heavily on the deposit and delivery processes, which increases the physical and psy minimizes chemical stress and its performance in the perception of complex storage and retrieval processes what can be maintained over a long period of time benefits a more efficient work result.

He further advantageous embodiments of the solution according to the invention give themselves from the subclaims.

The invention is described in the following description exercise as well as the graphic representation of an exemplary Embodiment explained with several figures. Show it:

Fig. 1 is a plan view of an inventive combination rotary handle,

Fig. 2 is a partially sectional front view according to the section line BB of FIG. 1,

Fig. 3 is a side view of Fig. 1,

Fig. 4 is a partially sectioned side view according to the section line AA of FIG. 1,

Fig. 5 is a plan view of a preferred embodiment of the combination rotary handle with an operating lever according to the invention in partial section and

Fig. 6 is a schematic plan view of a control panel with combination rotary handles arranged on both sides according to the invention as a schematic diagram.

. As shown in Figure 1, a stationary U-shaped Ge steering shoe 17 - draws to as rear joint shoe 17 be - on its end face fixed to the housing at a angedeu ended control panel 24 of a truck, preferably a positively driven aisle truck mounted. Referring to FIGS. 3 and 4, the joint shoe 17 laterally a trapezoidal cross-sectional shape and is provided centrally of its two side walls with through-bores 34. In these Durchgangssboh stanchions 34 , a continuous first joint 27 - hereinafter referred to as hinge pin - is movably arranged, on which an elongated coupling member 16 is attached within the side cheeks of the joint shoe 17 . The coupling member 16 is provided at the end of its top and bottom with continuous, circular arch-shaped joint sockets 19 , as in FIGS . 1 and 3, it clearly. Axially aligned to the joint sockets 19 of the coupling member 16 , circular arc-shaped recesses 18 are also embedded in both side cheeks of the joint shoe 17 . In the recesses 18 and the socket 19 are opposed spring bolts 20 , 21 inserted, which are in a recess 22 from the coupling member 16 by means of a tension spring 23 GE spring-loaded and connect the latter with the joint shoe 17 resiliently.

The other, free-hanging end of the coupling member 16 is, as already described above, in the same way about a joint 15 - hereinafter referred to as hinge pin - mounted in a second Ge steering shoe 7 and also by means of two in circular bo gene-shaped recesses 8 and socket 9 arranged spring bolts 10 , 11 and a tension spring 12 embedded in an end recess 13 of the coupling member 16 are spring-loaded relative to the joint shoe 7 . The front joint shoe 7 has a rectangular cross section, the ends in two Ausla extensions 42 merges. On these projections 42 , a combination rotary handle 2 is screwed by means of a flange 4 using two fastening screws 5 and 6 , which can be provided with a flattened portion 3 for better handling ( FIGS. 2, 3 and 4).

The two hinge pins 15 and 27 protrude on the handle 2 facing away from the side cheeks of the joint shoes 7 and 17 and serve as supports 30 and 26 for a circuit board 25 , which is preferably screwed.

At both ends of the board 25 , the two joint shoes 17 , 7 facing, first partial elements 36 and 38 first and second signal generating means 36 , 37 and 38 , 39 and BEFE Stigt. These first sub-elements 36 and 38 are opposed by second sub-elements 37 and 39 of the signal generating means 36 , 37 and 38 , 39 , which are arranged on the side cheeks of the two joint shoes 17 , 7 facing the board 25 . The signal generating means 36 to 39 can be of a contacting (potentiometer) or contactless type; preferably they work contactless and wear-free.

In the embodiment of FIGS. 1-4, the second partial element 37 of the signal generating means 36 , 37 located on the stationary rear joint shoe 17 is designed as a permanent magnet, while a Hall generator is used as the corresponding first partial element 36 on the circuit board 25 . The same applies in the area of the front joint shoe 7 : there, the second partial element 39 fastened to the circuit board 25 represents a Hall generator, while the opposite partial element 38 is designed as a permanent magnet. With the first signal generating means 36 , 37 only the two-hand control signal is acknowledged, meanwhile the second signal generating means 38 , 39 exclusively for generating vehicle control signals, such as. B. serves shifting or lift switching signals, the assignment can also be reversed optionally.

Alternatively, the signal generating means 36 to 39 can be of a photoelectric type, preferably digital control signal generating fork light barriers. The light sensors and receivers are arranged on the circuit board 25 and the corresponding incremental encoders, preferably reticulated disks, on the two joint shoes 7 , 17 .

As is known, industrial trucks can be equipped with one or more load suspension devices depending on their intended use and area of application. For various uses, it is sufficient if the load suspension device is permitted with a degree of freedom, for example for changing the height. Other areas of application, for example the use as order picking stackers, require on the one hand several and on the other hand more complex load handling devices, each of which has several degrees of freedom, for example in the x, y and z directions for height, length and side movement and possibly also for pivoting and / or rotating. In the latter applications, it is advisable to integrate at least one additional signal transmitter into the combination rotary handle 2 depending on the number, type and degrees of freedom of the aforementioned vehicle-internal load-receiving means.

In order to take these requirements into account, the combination turning handle 2 according to FIG. 5 is provided with an operating lever 45 . This is arranged by means of a blind hole 46 on the free end of the combination twist grip 2 , preferably for production reasons, for the purpose of cost savings sticks with this ver. The operating lever 45 is provided with an upwardly projecting handle-shaped projection 47 as a grip element for the hand of the operator, which may have finger-shaped grip recesses, not shown, on its outside facing away from the two-joint rotary switch 1 .

The control lever 45 is hen before its projection 47 with a slightly inclined to the two-joint rotary switch 1 button 48 verse, which is equipped with holes 49 and 50 . In these bores 49 and 50 - preferably in the region of the thumb or index finger of the gripping hand - signal transmitters 51 and 52 can be inserted, which can be designed as push buttons, push switches, rocker switches, rotary valves, or the like. The bores 49 and 50 lead to a cable duct 53 embedded in the outer surface of the combination rotary handle 2 . Holes 49 and 50 and Ka belkanal 53 are hen for receiving control lines 54 , which lead to known and therefore not shown and described actuating elements, the cable outlet from the combination rotary handle 2 preferably being encapsulated with plastic.

As an alternative or in addition, in addition to the signal transmitters 51 and 52, further finger-operated signal transmitters can be arranged as required in the button 48 and / or on the inside of the handle-shaped projection 47 facing the two-joint rotary switch 1 .

In general, the control panel 24 of an industrial truck with two control levers 45 a and 45 b equipped with combination turning handles 2 a and 2 b, which are preferably attached on both sides of the same. Fig. 6 shows a plan view of such a control panel 24 , the associated branches steering rotary switch 1 are hidden under the control panel 24 is arranged.

In addition to various function displays 56 , the control panel 24 is also equipped with a steering element 57 in the form of a steering button or steering wheel and with a selectable number of further finger-operated signal elements 58 with options for predetermined control functions ( FIG. 6).

The following description is based on the assumption that this control panel 24 on a commissioning stacker be known and therefore not shown and described construction, for example a model MX 20 from Wagner Fördertechnik GmbH & Co KG, 7410 Reutlingen, is arranged. Such an order picking forklift is equipped with a height-adjustable driver's cab by means of a main lift, on which a load suspension device is arranged, which in turn can be adjusted in height by means of an initial lift relative to the driver's cab to a limited extent. The load suspension device is designed as a telescopic swivel push fork which can be shifted in the transverse direction by means of a pushing movement on the front side of the driver's cab and also rotated by 180 ° by means of a rotating movement. In addition, there is the possibility of simultaneously rotating and pushing the swivel push fork in a simultaneous movement, hereinafter referred to as "synchronous turning".

The signal transmitters 51 a and 52 a and 51 b and 52 b each serve for the selection and control of known control circuits or adjusting means for the desired type of movement of the load receiving means. The signal transmitters 51 a to 52 b are assigned the following control commands in detail:

Signal generator 51 a = synchronous turning (turning and pushing simultaneously),
Signal generator 52 a = initial stroke,
Signal generator 51 b = push,
Signal generator 52 b = turning.

The rotary movement of the right-hand combination rotary handle 2 a using its control lever 45 a according to the movement arrow 35 a is primarily occupied by speed control signals for the drive and for synchronous rotation of the load handling device, meanwhile by the equivalent rotary movement of the left-side combination rotary handle 2 b using its control lever 45 b, primarily Ge speed control signals for the main stroke of the driver's cab and the initial stroke of the load handler are generated.

While the previously described rotary movements of both combination rotary handles 2 a and 2 b only serve as an alternative, ie in addition to the forced acknowledgment of the two-hand control command, this remains primarily reserved for the vertical deflection movements of the two combination rotary handles 2 a and 2 b. Accordingly, the main stroke movement is initiated by a vertical deflection movement of the right-hand combination rotary handle 2 a by depressing its control lever 45 a - indicated by a so-called "pressure cross" 55 a - which indicates the vertical direction of movement, so to speak as a two-hand control command and from the corresponding deflection movement of the left-hand combination rotary handle 2 b a control signal for the traction drive is derived according to the printing cross 55 b.

It is advantageous to switch the signal generator 51 a to 52 b and the control levers 45 a and 45 b so that each signal-triggering element on one side of the control panel 24 simultaneously serves as a positive acknowledgment organ for each signal-triggering element on the other side of the control panel 24 serves.

The mode of operation of the combination rotary handle 2 according to the invention is explained in more detail below.

By in FIGS. 1 and 3 with the moving arrow 35 Darge introduced rotational movement of the combination twist-grip 2, the front joint shoe 7 is rotated about the axis of rotation 29 of the pivot pin 15, depending on the direction, right or left handed twisted. Due to the fixed connection to the coupling member 16 , the board 25 with the Hall generator 39 remains unchanged in its absolute position, meanwhile the position of the permanent magnet 38 arranged on the front joint shoe 7 is changed relative to the Hall generator 39 . The magnetic field changes that occur as a function of the size of the angle of rotation are detected by the permanent magnet 38 and generated by known and therefore not described in more detail bene and shown signal conditioning means control signals for the driving circuit or lifting circuit.

Since the joint shoe 7 rotation by the two mutually verfederten Plungers 10 and 11 relative to the coupling member 16 against Ver spring-biased, is at a Verdre hung of the joint shoe 7 by its circular arc from savings 8 forcibly one of the spring bolts 10 and 11 from its circular arc-shaped joint socket 19 excavated and ent against the restoring force of the tension spring 12 acting on it in the direction of rotation of the combination rotary handle 2 . Since the ge opposite spring bolt 11 or 10 maintains its absolute position in the arcuate socket 9 of the stationary coupling member 16 unchanged, the tension spring 12 is tensioned with increasing angle of rotation of the combination rotary handle 2 and thereby increases its restoring force. As soon as the combination rotary handle 2 is released again, the opposing force of the return spring 12 pulls the deflected spring bolt 10 or 11 together with the joint shoe 7 back into its neutral starting position or zero position.

In a indicated in Fig. 2 vertical deflection of the combination rotary handle 2 up or down according to the direction of arrow 33 , the free-hanging front end of the Kop pelliedes 16 in the stationary joint shoe 17 is deflected about the axis of rotation 28 of the hinge pin 27 . In principle, this is also a pure rotary movement of the entire branch steering rotary switch 1 by an extended radius. Since the Pla tine 25 via the carrier 26 and 30 of the hinge pin 15 and 27 is firmly connected to the coupling member 16 , it follows the ver tical deflection of the combination rotary handle 2 and is lowered or raised together with this down or up at the handle end. As a result, the other end of the board 25 is deflected together with the coupling member 16 about the axis of rotation 28 in the opposite direction, whereby the position of the Hall generator 36 with respect to the permanent magnet 37 changes, which its absolute position by the attachment to the stationary Ge steering shoe 17 maintains. As already mentioned above, the magnetic field change is detected and a signal for the forced acknowledgment of the two-hand control is derived from it.

In order to limit the rotation of the front joint shoe 7 in the coupling member 16 and the rotation of the coupling member 16 in the stationary joint shoe 17, as shown in Fig. 3 at least in a side wall of both joint shoes 7 and 17 respectively eingelas sen a circular arc shaped guide groove 41 and 31. Both side cheeks of the joint shoes 7 and 17 preferably have such guide grooves 41 and 31 . In this Füh rungsnuten 41 and 31 engage the guide pins 40 and 32 which centrally on an imaginary line of spring pin 10 and 11 respectively are fixed 20 and 21 in the coupling element 16 and guided in the guide grooves 41 and 31st Depending on the length of the circular guides 41 and 31 , the measure of the angle of rotation for the rotation of the front joint shoe 7 about the axis of rotation 29 in the coupling member 16 and the deflection of the coupling member 16 about the axis of rotation 28 in the stationary joint shoe 17 can be limited since in the the guide pins 32 and 40 at the ends of the guide grooves 41 and 31 .

The operator thereby opens up the special possi bility, by rotating one of the two combination handles 2 a or 2 b in accordance with the movement arrows 35 a, 35 b to generate either shifting or lifting circuit signals, meanwhile by simultaneous vertical deflection of the other combination handle 2 - also in mutual interaction with each other - according to the movement arrows 33 a and 33 b can take the necessary forced acknowledgment for two-hand control before. In addition, if necessary, the deflection movement 33 can be superimposed on the rotary movement 35 of the combination rotary handle 2 or vice versa, in order thereby to simultaneously generate drive switching and lift switching signals for the diagonal travel of the industrial truck. This presupposes a simultaneous rotation and deflection movement of at least one of the two combination rotary handles 2 a or 2 b, so that on the one hand positively acknowledged and on the other hand one of the two vehicle control signals (either driving gear or lift control signal) can be generated, meanwhile the other combination rotary handle 2 a or 2 b only needs to be twisted to generate the second vehicle control signal (either lift shift or drive shift signal).

As a rule, two combination rotary handles 2 are arranged on the control panel 24 of the industrial truck, preferably on both sides of the same. The operator thereby opens up the special possibility, by rotating one of the two combination rotary handles 2 in accordance with the movement arrows 35 a and 35 b, to either generate shifting or lifting gear signals, meanwhile by simultaneous vertical deflection movement of the other combination rotary handle 2 - also in mutual interaction to each other - can make the required forced acknowledgment for two-hand control according to the movement arrows 33 a and 33 b. In addition, if necessary, the Auslenkbe movement 33 of the rotary movement 35 of the combination rotary handle 2 can be superimposed or vice versa, thereby simultaneously generating driving circuit and lift switching signals for the diagonal travel of the industrial truck. This requires a simultaneous turning and deflecting movement of at least one of the two combination handles 2 a or 2 b, so that on the one hand positively acknowledged and on the other hand one of the two vehicle control signals (either driving gear or lift control signal) can be generated, meanwhile the other combination handle 2 a or 2 b only needs to be twisted to generate the second vehicle control signal (either lift shift or drive shift signal).

Because the operator must therefore acknowledge with every hand and can generate at least one vehicle control signal at the same time, there is no annoying and time-consuming change of grip on various items dene signal generator, that of an economically optimal way of playing of the industrial truck (aisle truck) and the loading servant due to a change in his line of sight distracts from the actual loading process.  

Alternatively, to simplify the handling of the combination rotary handle 2 to facilitate vehicle control, the control signal for forced acknowledgment can also be placed on the rotary movement according to the movement arrows 35 a and 35 b of the combination rotary handle 2 and at the same time derived from the second signal generating means 38 , 39 , for example in the form a threshold.

The order picking stacker is usually moved manually by the operator in wide warehouse aisles or gal streets. B. when moving from one rack aisle to the other. Here, the steering movements are generated by means of the left driver's hand using the steering element 57 , meanwhile the driving speed is regulated by the deflection of the combination rotary handle 2 a with the right driver's hand according to the movement arrow 35 a, so that both hands are forcibly bound and reaching out from the lateral vehicle contours is thwarted.

However, the order picking stacker becomes inside the rack aisles positively guided, usually rail-guided, whereby the Er no need for steering movements and the left driver's hand becomes free. Because of this, there was in principle the possibility during the shelf travel beyond the outer contours of the vehicle reach into the shelf and cause accidents. To do this thwart, write accident prevention regulations and safe In this case, two-hand operation is mandatory ahead.

As already described above, one of the signal transmitters 51 a to 52 b is used to select the respectively desired type of movement of the load-carrying means and to give the opposite combination rotary handle 2 a or 2 b as a kind of setpoint specification, with which both the speed of the selected movement is then controlled as well as being acknowledged at the same time.

Thus, the movement type "simultaneous turning" for example, is selected the load receiving means with the right-side signal generator 51, a and b by a rotational movement of the opposite Combination twist-grip 2 by its control lever 45 b around the Be wegungspfeil b speed controlled 35th Com bid twist grip 2 b and control lever 45 b serve as a mutual forced acknowledgment element.

To the initial lift of the load receiving means to initiate on the cab, it requires an operation of this movement associated signal generator 52 a, whereby both the speed control and Zwangsquittierung of the two-hand control command - is carried out by turning the opposite Combination twist-grip 2 b - as previously described.

In an equivalent manner, the types of movement "pushing" or "turning" the load handler are preselected by pressing the left-hand signal generator 51 b and 52 b, meanwhile the respective speeds of movement while simultaneously filling the two-hand operation by rotating the right-hand combination rotary handle 2 a can be controlled according to the movement arrow 35 a.

When initiating a movement within the rack aisle - which eliminates the need for steering movements of the order-picking truck due to its rail guidance - special attention must be paid to the fact that both hands of the forklift driver must be constantly tied to control elements in order to reach out into the rack while the truck is in motion absolutely safe to exclude. For this purpose, it is therefore first necessary to deflect the left combination rotary handle 2 b in the vertical direction according to the cross 55 b in order to control the travel drive. So that the order picking stacker can move, there is also a need for the forced acknowledgment of this control signal by the right-hand combination rotary handle 2 a, by means of whose deflection movement using its operating lever 45 a in the direction of movement arrow 35 a, a proportional speed signal for the travel drive must be generated at the same time. Only when the control recognizes that both hands of the forklift driver are on controls, the drive is switched on.

The main lift for the driver's cab together with the load suspension device is operated in a reciprocal manner. The actuating means for the main stroke are controlled by means of a vertical deflection movement of the right combination rotary handle 2 a according to the cross 55 a and the speed of the lifting movement is controlled by rotating the left combination rotary handle 2 b by means of its control lever 45 b.

All commercially available digital or analog signal generating means can be used, which can be used for the intended purpose of triggering driving gear and / or lifting gear signals, as is the choice of other spring means for automatic resetting of the two-joint rotary switch 1 or the arrangement of Locking positions to comply with certain and preselectable rotation or deflection angle of the combination rotary handle 2 for the purpose of generating targeted travel switching and / or lifting switching signals possible. Likewise, depending on requirements, certain signal transmitters can optionally be assigned different or additional control signals, which can be dependent, inter alia, on the type and number of load manipulation units or the like.

Furthermore, the arrangement of at least one additional union digital or analog signal generator on the combination rotary handle 2 for controlling a further degree of freedom of a load carrier of the industrial truck is conceivable, for example for pivoting or rotating the load carrier about a third axis. A derar term signal generator can be designed according to the device of DE-OS 39 25 872 or be arranged on the front side of the combination rotary handle 2 as a pressure or rocker switch. Deriving analog signals from the relative movement of the first and second signal generating means 36 , 37 and 38 , 39 to one another in addition to the digital signals - for example for threshold value formation - is self-evident to the average person skilled in the art without further mention anyway.

Reference list

1 two-joint rotary switch
2 combination rotary handles
2 a combination rotary handle
2 b combination rotary handle
3 flattening
4 flange
5 fastening screw
6 fastening screw
7 Front articulated shoe
8 recess
9 socket
10 spring bolts
11 spring bolts
12 tension spring
13 recess
14 through hole
15 joint (bolt)
16 coupling link
17 Rear articulated shoe
18 recess
19 socket
20 spring bolts
21 spring bolts
22 recess
23 tension spring
24 control panel
25 board
26 carriers
27 joint (bolt)
28 axis of rotation
29 axis of rotation
30 carriers
31 guide groove
32 guide pin
33 movement arrow
33 a movement arrow
33 b movement arrow
34 through hole
35 movement arrow
35 a movement arrow
35 b movement arrow
36 first sub-element (first signal generating means)
37 second sub-element (first signal generating means)
38 first sub-element (second signal generating means)
39 second sub-element (second signal generating means)
40 guide pin
41 guide groove
42 throat
43
44
45 operating lever
45 a control lever
45 b Control lever
46 blind hole
47 throat
48 button
49 hole
50 hole
51 signal generator
51 a auto switch
51 b Signal generator
52 signal transmitters
52 a auto switch
52 b Signal generator
53 cable duct
54 control line
55 a pressure cross
55 b cross
56 Function display
57 steering element
58 signal element

Claims (8)

1.combination handle for two-hand operation of positively driven industrial trucks, in particular aisle trucks, with two signal generating means for simultaneous one-hand triggering of two control signals, the combination handle being rotatably coupled to the free-hanging end of a two-joint rotary switch fixed to the housing, which can be rotated by a first and / or second joint and also is spring-loaded against torsion and that the torsion-detecting first signal generating means for acknowledging the two-hand control signal and second signal generating means for triggering at least one vehicle control signal are provided (according to patent application P 41 11 675.5), characterized in that the number, type and degrees of freedom depend on requirements Vehicle-internal load-carrying means at least one further finger-operated signal transmitter ( 51 or 52 ) for triggering at least one additional control signal can be arranged on the combination rotary handle ( 2 ). 2. Combination twist grip according to claim 1, characterized in that two signal transmitters ( 51 , 52 ) are arranged in the circumferential circumferential surface and / or the free end face of the combination twist grip ( 2 ). 3. Combination handle according to claim 1 and / or 2, characterized in that the signal transmitters ( 51 , 52 ) are integrated into an operating lever ( 45 ) arranged on the combination handle ( 2 ). 4. Combination twist grip according to one of the preceding claims, characterized in that the signal transmitters ( 51 , 52 ) are designed as pressure or rocker switches and control lines ( 54 ) of the same are guided in a cable duct ( 53 ) embedded in the combination twist grip ( 2 ). 5. Combination twist grip according to one or more of the preceding claims, characterized in that the signal transmitter ( 51 a, 52 a and 51 b, 52 b) for selecting the respective type of movement of at least one load handling device and for specifying the setpoint and / or forcing the two-hand control command for the opposite combination rotary handle ( 2 a or 2 b) are provided. 6. Combination twist grip according to one or more of the preceding claims, characterized in that the operating levers ( 45 a, 45 b) are provided for generating proportional speed signals both for the movements of the load handling device and for the travel drive and / or for the forced acknowledgment of two-hand control commands . 7. Combination handle according to one or more of the preceding claims, characterized in that the operating lever ( 45 a, 45 b) for generating proportional speed signals about the longitudinal axis of the combination handles ( 2 a, 2 b) can be rotated and for the forced acknowledgment of the two-hand control commands in vertical Direction to the longitudinal axis of the combination rotary handles ( 2 a, 2 b) can be deflected. 8. Combination twist grip according to one or more of the preceding claims, characterized in that the signal transmitter ( 51 a, 52 a and 51 b, 52 b) and the twisting and deflecting movements of the operating lever ( 45 a, 45 b) can optionally be assigned with other control signals are.