Pipe and sewer cleaning machine

Abstract

The invention relates to a pipe and sewer cleaning machine (1) with a rotatably mounted clamping jaw system (2) for clamping and driving a cleaning spiral (21). The clamping jaw system (2) is set into rotation by a motorized drive unit (3). The cleaning spiral (21) is clamped in the clamping jaw system (2) and can be set into rotation when a hand lever (5) is actuated. The pipe and sewer cleaning machine (1) has a machine frame (6) that supports the clamping jaw system (2) and the drive unit (3) in such a way that reaction forces can be transferred via the machine frame (6) into a base (7) on which the pipe and sewer cleaning machine (1) rests during its intended use. The pipe and sewer cleaning machine (1) has an electronic control unit (8) and a machine control unit (9) connected thereto.At least one operating parameter of the motor drive unit (3) can be changed by means of the machine control (9). The electronic control unit (8) has electronic and / or electromechanical input means (10) by means of which user inputs can be detected and converted into an input signal. The control unit (8) and the machine control (9) are interconnected in such a way that the pipe and sewer cleaning machine (1) can be controlled by means of the input means (10) of the control unit (8).

Description

[0001] The invention relates to a pipe and sewer cleaning machine with a rotatably mounted clamping jaw system for clamping a cleaning spiral, wherein the clamping jaw system can be set into a rotary movement by a motor drive device during the cleaning operation of the pipe and sewer cleaning machine, wherein the clamping jaw system can be actuated by a hand lever of the pipe and sewer cleaning machine, wherein the cleaning spiral is clamped in the clamping jaw system when the hand lever is actuated, so that the cleaning spiral can be set into a rotary movement, wherein the pipe and sewer cleaning machine has a machine frame on which the clamping jaw system and the drive device are at least indirectly arranged and fixed, so that reaction forces of the clamping jaw system and / or the drive device are at least indirectly transmitted by means of the machine frame into a contact surface,on which the pipe and sewer cleaning machine stands during its intended use, wherein the pipe and sewer cleaning machine has an electronic control unit and a machine control unit that is and / or can be operatively connected to the control unit, wherein at least one operating parameter of the motor drive device can be changed by means of the machine control unit, wherein the electronic control unit has electronic and / or electromechanical input means by means of which at least one user input can be detected and converted into at least one input signal, wherein the control unit and the machine control unit are adapted to one another and are and / or can be operatively connected to one another in such a way that the machine control unit can be operated by means of the input means of the control unit and thus the pipe and sewer cleaning machine can be controlled.

[0002] Such pipe and sewer cleaning machines are used, for example, to remove dirt from pipeline systems. For this purpose, the cleaning spiral, which is usually several meters long, is arranged in the pipe and sewer cleaning machine in such a way that it can be set in rotation by operating the hand lever using the clamping jaw system. Such pipe and sewer cleaning machines are described, for example, in the publications EP 0 607 612 A1, DE 20 2014 104 430 U1, and DE 10 2019 130 917 A1.

[0003] Another type of drain cleaning machine uses rotating drums in which the drain cleaning spirals are wound. The rotation of the drain cleaning spirals is caused by the rotation of the respective drums. Such machines, described, for example, in WO 2009 / 143497 A2, do not have clamping jaw systems.

[0004] Key requirements for such pipe and sewer cleaning machines are resistance to contamination and operating safety. Particularly since the cleaning spiral is usually guided manually by the operator operating the pipe and sewer cleaning machine, in order to detect and remove contamination based on resistance, the risk of operating errors must be kept as low as possible. For this purpose, machine operation using rotary switches, particularly cam switches, has become established in recent decades. Cam switches are a very robust type of rotary switch. A key feature of such cam switches is a conductive camshaft mounted inside the switch, which carries one or more electrical contacts. Rotating this camshaft opens or closes the contacts.In the pipe and sewer cleaning machines known from the prior art, such cam switches are used to switch from a first to a second direction of rotation of the motor drive unit. Switching always occurs via a zero position of the cam switch, in which the motor drive unit is deactivated.

[0005] If the prior art pipe and sewer cleaning machines use a different type of rotary switch than a cam switch, switching between the directions of rotation is always performed by setting the rotary switch to zero. This design prevents the operator from directly switching between the directions of rotation, thereby increasing the operational reliability of the pipe and sewer cleaning machines.

[0006] A disadvantage of conventional rotary switches is that they can only influence very few operating parameters of the pipe and sewer cleaning machine. For example, speed control of the motor drive unit cannot be implemented using the currently standard rotary switches in a way that would maintain the required level of operational reliability of the pipe and sewer cleaning machine.

[0007] The object of the present invention is therefore to provide a pipe and sewer cleaning machine which allows more flexible adjustment of operating parameters and simplifies operation.

[0008] This object is achieved according to the invention in that a safety rule is implemented in the machine control and / or the operating part, wherein at least one undesirable operating state is defined by the safety rule, wherein impermissible input signals and / or impermissible input signal sequences are defined by means of which the at least one undesirable operating state can be set, wherein the safety rule defineswhich desired operating state of the pipe and sewer cleaning machine is to be maintained or set when the machine control generates the inadmissible input signal and / or the inadmissible input signal sequence, and wherein the pipe and sewer cleaning machine can be transferred to the desired operating state and / or maintained in the desired operating state even when the machine control generates the inadmissible input signal and / or the inadmissible input signal sequence, so that the risk of incorrect operation of the pipe and sewer cleaning machine by the operator can be minimized by means of the safety rule.

[0009] In this way, the operational reliability of the pipe and sewer cleaning machine is increased. Such a design of the pipe and sewer cleaning machine according to the invention makes it possible, for example, to prevent the speed of the motor drive device from increasing or decreasing above or below a value considered safe. It is also possible, and the invention provides, for an emergency shutdown of the pipe and sewer cleaning machine to be included in the safety rule.

[0010] Such a design of the pipe and sewer cleaning machine according to the invention makes it possible for a large number of different operating parameters of the pipe and sewer cleaning machine to be adjustable.

[0011] It is advantageously provided that the control unit can be designed as a control panel arranged on the pipe and sewer cleaning machine. To enable the operator to adapt to the working environment, it is also possible and provided according to the invention for the control unit to be detachably attached to the pipe and sewer cleaning machine.

[0012] The operative connection between the control unit and the machine control system can be established and / or can be established, for example, with a wired and / or wireless connection. It is also possible, and the invention provides, for the control unit to have an interface module, by means of which an operative connection with an external device can be established, so that the pipe and sewer cleaning machine can be controlled and / or monitored using the external device.

[0013] It is advantageously provided that the machine control unit can be designed as a separate component of the pipe and sewer cleaning machine. The machine control unit thus designed can be arranged independently of the control unit in or on a housing of the pipe and sewer cleaning machine.

[0014] To enable a particularly compact design of the pipe and sewer cleaning machine according to the invention, a particularly advantageous implementation of the inventive concept provides for the control unit and the machine control system to be integrated into one another. For example, it is possible for the control unit and the machine control system to be arranged in a common housing.

[0015] In an advantageous implementation of the inventive concept, it is provided that one of the variable operating parameters is a motor speed of the motor drive device. In particular, it is also provided that the motor speed can be varied automatically over a definable period of time. For example, it is possible and provided according to the invention that a running time and a speed of the motor drive device can be set on the control panel using the input means, for example 30 seconds at 500 revolutions per minute. In this way, a defined cleaning performance can be set, unlike with pipe and sewer cleaning machines known from the prior art. This enables an optimization of cleaning processes, since the operator can concentrate fully on the behavior of the cleaning spiral without having to pay attention to the other operating parameters of the pipe and sewer cleaning machine.

[0016] In a particularly advantageous implementation of the inventive concept, it is provided that certain courses of operating parameters can also be programmed and / or called up as needed on the control unit, so that a cleaning process can be easily set and / or reproduced by the operator.

[0017] To enable simple operation of the pipe and sewer cleaning machine according to the invention, it is advantageously provided that at least one of the input means is a button and / or has a push button, wherein the at least one input signal can be generated by actuating the button. Push buttons or push-button switches enable the implementation of very simple control elements that are particularly easy to operate even when the operator is wearing protective equipment, such as eye or hand protection.

[0018] To provide simple protection for the control panel against moisture ingress, an advantageous implementation of the inventive concept provides for at least one of the buttons to be designed as a membrane keypad. Membrane keypads are designed for long-term use, even under special operating conditions.

[0019] They are mainly used where dust, moisture and dirt are to be expected.

[0020] In order to facilitate interaction between the operator and the pipe and sewer cleaning machine according to the invention, it is advantageously provided that the operating unit has at least one output means, wherein the operating unit and / or the machine control unit has an output signal generator by means of which an output signal can be generated, and wherein an output signal generated by the output signal generator of the operating unit and / or the machine control unit can be converted into a form perceivable by the operator and output by means of the output means. Particularly preferably, the output signal provides the operator with information about a status of the pipe and sewer cleaning machine, for example about the current or preselected direction of rotation and / or speed of the cleaning spiral, about detected faults, about the condition of components of the pipe and sewer cleaning machine, or the like.

[0021] In a particularly advantageous embodiment of the pipe and sewer cleaning machine according to the invention, at least one of the output means is an optical output means. Optical output means within the meaning of the inventive concept are all output means that generate a visually perceptible signal and / or provide visually perceptible information, i.e., in particular, lights and displays, but also mechanical indicators such as speedometers, pointers, or the like.

[0022] In order to enable the pipe and sewer cleaning machine according to the invention to be operated as simply and safely as possible, it is advantageously provided that input means of the operating part are accessible from a handle section of the hand lever, wherein the hand lever is gripped by the operator in the handle section when the pipe and sewer cleaning machine is used as intended, wherein a minimum distance formed between the handle section and each operating element of the operating part is greater than the span of a man's hand when the cleaning spiral is inserted into the clamping jaw system and the hand lever is actuated, so that simultaneous operation of the hand lever and the operating part with a single hand is prevented. Span of the hand in the sense of the inventive concept means the distance between the tip of the thumb and the tip of the little finger on an open hand.

[0023] Particularly preferably, the minimum distance is greater than the 95th percentile of the male hand span plus a safety margin of 10% of the 95th percentile. The 95th percentile is a statistical extreme value from the field of anthropometry and, with respect to the male hand span, indicates that only 5% of men have a larger hand span. In this case, the male hand span is chosen as the reference value, as it is, on average, larger than the female hand span.

[0024] In order to enable the pipe and sewer cleaning machine according to the invention to be operated as simply and safely as possible, it is advantageously provided that input means of the operating part are accessible from a handle section of the hand lever, wherein the hand lever is gripped by the operator in the handle section when the pipe and sewer cleaning machine is used as intended, wherein a minimum distance formed between the handle section and each operating element of the operating part is greater than 30 cm when the cleaning spiral is inserted into the clamping jaw system and the hand lever is actuated, so that simultaneous operation of the hand lever and the operating part with a single hand is prevented. The choice of the specific minimum distance depends on the average hand span of a population using the pipe and sewer cleaning machine according to the invention.

[0025] To further increase the operating safety of the pipe and sewer cleaning machine according to the invention, an advantageous implementation of the inventive concept provides for an electrical switch to be arranged on the housing, spaced apart from the operating unit. The electrical switch can be used to establish and disconnect at least one connection between the drive device and a voltage source. Particularly preferably, the entire pipe and sewer cleaning machine can be disconnected from a power supply by means of the electrical switch.

[0026] To prevent accidental operation of the electrical switch, an advantageous implementation of the invention provides for the electrical switch to be located on a side surface of the housing of the pipe and sewer cleaning machine according to the invention. The electrical switch can be designed, for example, as a push-button switch, a toggle switch, a rotary switch, or the like. Such switches are also available in sealable versions, which are only slightly affected by the dirt generated during operation of the pipe and sewer cleaning machine.

[0027] It is also possible and provided according to the invention that the safety rule can have a notification protocol, wherein the notification protocol determines at which inadmissible input signal and / or which inadmissible input signal sequence an output signal is to be generated by the machine control, which can be output, for example, by means of the output means in order to warn the operator.

[0028] In an advantageous implementation of the inventive idea, the safety rule comprises a rotation reversal lock, wherein the rotation reversal lock defines a direct switching from a first direction of rotation of the clamping jaw system to a second direction of rotation of the clamping jaw system as an undesirable operating state, wherein the desired operating state defined by the rotation reversal lock is that switching between the directions of rotation of the clamping jaw system occurs via a stop state in which the clamping jaw system is stopped, so that switching of the direction of rotation by means of the machine control always occurs via the stop state of the clamping jaw system. This prevents direct switching between the directions of rotation of the clamping jaw system. Direct switching entails the risk of overloading components of the pipe and sewer cleaning machine and an increased risk of injury to the operator.

[0029] By using, as provided according to the invention, a control panel that can be freely positioned on the pipe and sewer cleaning machine and a machine control that can be freely positioned on or in the pipe and sewer cleaning machine in relation to the control panel, as well as in conjunction with modern construction methods and materials, the pipe and sewer cleaning machine according to the invention can also be structurally improved compared to the machines known from the prior art in such a way that operation is simplified.

[0030] In an advantageous implementation of the inventive concept, it is provided that a monitoring device is implemented in the machine control and / or the operating part, wherein at least one status parameter and / or at least one operating parameter of the pipe and sewer cleaning machine can be monitored by means of the monitoring device, wherein the monitoring device is brought and / or can be brought into operative connection with the at least one output means such that the operator can be informed by the monitoring device via the output means about the at least one status parameter and / or the at least one operating parameter. Monitorable status and operating parameters are in particular engine speed, direction of rotation of the cleaning spiral, engine temperature, engine load and the like.

[0031] In embodiments of the pipe and sewer cleaning machine according to the invention that are battery-operated, it is advantageously provided that the monitoring device is and / or can be operatively connected to the battery in such a way that the operator can be informed of the battery charge level by means of the output means. Particularly preferably, the operator can be informed of the remaining operating time of the pipe and sewer cleaning machine by means of the monitoring device and the output means. This is advantageous, for example, if the cleaning spiral is displaced very far into a pipe or sewer and can only be displaced out of the pipe or sewer again with the assistance of the pipe and sewer cleaning machine according to the invention.In this case, it is possible and provided according to the invention that the operator can be informed acoustically and / or visually about the reaching of a defined remaining operating time, for example by means of a signal tone when a remaining operating time of 15 minutes is reached.

[0032] In order to enable the pipe and sewer cleaning machine to be switched on and off by the monitoring device depending on the determined status and / or operating parameters, it is advantageously provided that the monitoring device has a switching element and / or is and / or can be operatively connected to a switching element, wherein the switching element is and / or can be operatively connected to the machine control system and / or the operating unit in such a way that the pipe and sewer cleaning machine can be switched off by the monitoring device and / or the operating unit of the pipe and / or sewer cleaning machine can be locked to inputs from the operator. Such a configuration of the pipe and sewer cleaning machine according to the invention enables the implementation of further safety measures.For example, it is possible and provided according to the invention that the monitoring device can prevent an increase in the engine speed if the engine has exceeded a certain operating temperature or operating time.

[0033] In a particularly preferred implementation of the inventive concept, the monitoring device comprises a timer, so that operating and downtimes, in particular, can be monitored by the monitoring device. To prevent the pipe and sewer cleaning machine from being accidentally started after a longer downtime, for example, after a work break by the operator, a particularly advantageous implementation of the inventive concept provides that the monitoring device switches off the pipe and sewer cleaning machine after a predetermined downtime monitored by the timer.

[0034] In an advantageous implementation of the inventive concept, it is provided that the machine frame has a top bar which extends from a front end section of the pipe and sewer cleaning machine, in which the cleaning spiral exits the pipe and sewer cleaning machine, to a rear end section of the pipe and sewer cleaning machine, in which the cleaning spiral can be inserted into the pipe and sewer cleaning machine, wherein the top bar has no webs, ribs or other reinforcing structures on an upper side facing away from the support plane. By such a configuration of the pipe and sewer cleaning machine according to the invention, it is achieved in particular that the pipe and sewer cleaning machine becomes less dirty and is also easier to clean after use.This aspect is particularly relevant because pipe and sewer cleaning machines are often used in heavily contaminated and sometimes unhygienic environments and / or come into contact with contaminated media.

[0035] Contamination accumulates in the webs and ribs of prior art pipe and sewer cleaning machines, particularly in the upwardly facing areas. In contrast, with the pipe and sewer cleaning machine designed according to the invention, this contaminant can either drain away on its own or be easily removed.

[0036] In an advantageous implementation of the inventive concept, the upper beam comprises a control element receptacle in which the control element can be arranged. The arrangement of the control element in the control element receptacle of the upper beam facilitates operation of the pipe and sewer cleaning machine according to the invention, since the control elements are located directly within the operator's field of vision.

[0037] To enable particularly simple sealing of the control panel against environmental influences and contamination, an advantageous implementation of the inventive concept provides for the control panel mount to be formed integrally with the top cover. Particularly preferably, the control panel mount is incorporated into the top cover by means of a forming manufacturing process or is molded onto the top cover during a primary forming manufacturing process.

[0038] The machine frame is preferably made of a metallic material.

[0039] Further advantageous embodiments of the pipe and sewer cleaning machine according to the invention are explained with reference to embodiments shown in the drawings.

[0040] They show: Figures 1 a schematic oblique view of an embodiment of the pipe and sewer cleaning machine, Figure 2 a schematic detailed view of the operating part of an embodiment of the pipe and sewer cleaning machine, Figure 3 a schematic oblique view of the machine frame of the Figure 1 shown embodiment of the pipe and sewer cleaning machine and Figures 4 a schematic side view of an embodiment of the pipe and sewer cleaning machine.

[0041] In Figure 1A schematic view of an embodiment of a pipe and sewer cleaning machine 1 according to the invention is shown. The pipe and sewer cleaning machine 1 has a rotatably mounted clamping jaw system 2 for clamping a cleaning spiral (neither shown nor labeled). The clamping jaw system 2 can be set into a rotary motion during the cleaning operation of the pipe and sewer cleaning machine 1 by a motor drive device 3 and a power transmission arrangement 4. The clamping jaw system 2 can be actuated by means of a hand lever 5. The cleaning spiral is clamped in the clamping jaw system 2 when the hand lever 5 is actuated, so that the cleaning spiral can thereby be set into a rotary motion.

[0042] The pipe and sewer cleaning machine comprises a machine frame 6 on which the clamping jaw system 2, the drive device 3, and the power transmission arrangement 4 are arranged and secured such that reaction forces of the clamping jaw system 2, the drive device 3, and the power transmission arrangement 4 can be introduced by means of the machine frame 6 into a support surface 7 on which the pipe and sewer cleaning machine 1 rests. Furthermore, the illustrated embodiment of the pipe and sewer cleaning machine 1 comprises an electronic control unit 8 and a machine control unit 9 operatively connected to the control unit 8. The speed and direction of rotation of the motor drive unit 3 can be varied by means of the machine control unit 9.

[0043] In Figure 21 shows a partially enlarged view of the machine frame 6 with the operating unit 8 and the schematically illustrated machine control 9. The operating unit 8 has four electronic input means 10, one of which is designated as an example. User inputs can be recorded by means of the input means 10 and converted into input signals. The operating unit 8 and the machine control 9 are operatively connected to one another by means of a schematically illustrated first cable connection 11. The machine control 9 can be operated by an operator using the input means 10 of the operating unit 8. Furthermore, the machine control 9 is operatively connected to the drive device 3 by means of a second cable connection 12, so that the drive device 3 can be controlled by the operator using the machine control 9 via the input means 10 of the operating unit 8. The input means 10 of the operating unit 8 are designed as membrane switches.

[0044] The Figure 2 The control unit 8 shown further comprises five output means 13, one of which is designated as an example. The output means 13 are connected to a merely schematically illustrated output signal generator 14 of the control unit 8, wherein the output signal generator 14 is integrated into the control unit 8. The output means 13 of the control unit 8 shown are designed as light-emitting diodes, which provide the operator with visual feedback on the current operating state of the pipe and sewer cleaning machine 1.

[0045] In Figure 3 is a schematic oblique view of the machine frame 6 of the Figure 1The embodiment of the pipe and sewer cleaning machine shown is shown. The machine frame 6 has a top frame that extends from a front end section 16 of the pipe and sewer cleaning machine, in which the cleaning spiral exits the pipe and sewer cleaning machine, to a rear end section 17 of the pipe and sewer cleaning machine, in which the cleaning spiral can be inserted into the pipe and sewer cleaning machine. The top frame 15 has no webs, ribs, or other reinforcing structures on an upper side 18 facing away from the support surface 7, but merely a lever passage 19 and an operating part receptacle 20.

[0046] As in Figure 1 As shown, the control unit can be arranged in the control unit holder 20. The control unit holder 20 is formed integrally with the upper bar 15. In Figure 4A schematic side view of an embodiment of the pipe and sewer cleaning machine 1 is shown, wherein the schematically illustrated cleaning spiral 21 is inserted into the clamping jaw system 2 and guided through the pipe and sewer cleaning machine 1. The input means 10 of the operating part 8 are accessible from a handle portion 22 of the hand lever 5. The hand lever 5 is gripped in the handle portion 22 by a hand 23 of the operator. A minimum distance 24 is formed between the handle portion and the input means 10 of the operating part 8. In the illustrated embodiment of the pipe and sewer cleaning machine according to the invention, the minimum distance 24 is 30 cm. LIST OF REFERENCE SYMBOLS

[0047] 1. Pipe and sewer cleaning machine 2. Clamping jaw system 3. Drive device 4. Power transmission arrangement 5. Hand lever 6. Machine frame 7. Support surface 8. Operating unit 9. Machine control 10. Input means 11. First cable connection 12. Second cable connection 13. Output means 14. Output signal generator 15. Top bar 16. Front end section 17. Rear end section 18. Top side 19. Lever bushing 20. Operating unit holder 21. Cleaning spiral 22. Handle section 23. Hand 24. Minimum distance

Claims

1. Pipe and drain cleaning machine (1) comprising a rotatably mounted clamping jaw system (2) for fixing a drain snake (21) in a clamping manner, wherein the clamping jaw system (2) can be set into a rotational movement by a motor-driven drive apparatus (3) during the cleaning operation of the pipe and drain cleaning machine (1), wherein the clamping jaw system (2) can be actuated by a hand lever (5) of the pipe and drain cleaning machine (1), wherein the drain snake (21) is fixed in the clamping jaw system (2) in a clamping manner when the hand lever (5) is actuated such that the drain snake (21) can be set into a rotational movement as a result, wherein the pipe and drain cleaning machine (1) comprises a machine frame (6), on and to which the clamping jaw system (2) and the drive apparatus (3) are at least indirectly arranged and fixed such that reaction forces of the clamping jaw system (2) and / or the drive apparatus (3) can be introduced, at least indirectly, into a contact surface (7) on which the pipe and drain cleaning machine (1) is standing when used as intended by means of the machine frame (6), wherein the pipe and drain cleaning machine (1) comprises an electronic operating part (8) and a machine controller (9) that is or can be brought into an operative connection with the operating part (8), wherein at least one operating parameter of the motor-driven drive apparatus (3) can be modified by means of the machine controller (9), wherein the electronic operating part (8) comprises electronic and / or electromechanical input means (10), by means of which at least one user input can be detected and converted into at least one input signal, wherein the operating part (8) and the machine controller (9) are adjusted to one another and are or can be brought into an operative connection with one another such that the machine controller (9) can be operated by means of the input means (10) of the operating part (8) and the pipe and drain cleaning machine (1) can thus be controlled, characterised in that a safety rule is implemented in the machine controller (9) and / or the operating part (8), wherein at least one undesired operating state is defined by the safety rule, wherein impermissible input signals and / or impermissible input signal sequences are defined by the safety rule, by means of which the at least one undesired operating state can be set, wherein the safety rule defines what desired operating state of the pipe and drain cleaning machine (1) is supposed to be maintained or set by the machine controller (9) when the impermissible input signal and / or the impermissible input signal sequence are generated, and wherein the pipe and drain cleaning machine (1) can also be transferred into the desired operating state and / or kept in the desired operating state by the machine controller (9) when the impermissible input signal and / or the impermissible input signal sequence are generated, such that the risk of operating errors of the pipe and drain cleaning machine (1) by the operator can be minimised by means of the safety rule.

2. Pipe and drain cleaning machine (1) according to claim 1, characterised in that one of the modifiable operating parameters is a motor speed of the motor-driven drive apparatus (3).

3. Pipe and drain cleaning machine (1) according to any of claims 1 or 2, characterised in that at least one of the input means (10) is a button and / or comprises a button, wherein the at least one input signal can be generated by actuating the button.

4. Pipe and drain cleaning machine (1) according to claim 3, characterised in that at least one of the buttons is designed as a membrane button.

5. Pipe and drain cleaning machine (1) according to any of claims 1 to 4, characterised in that the operating part (8) comprises at least one output means (13), wherein the operating part (8) and / or the machine controller (9) comprise an output signal generator (14), by means of which an output signal can be generated, and wherein, by means of the output means (13), an output signal generated by the output signal generator (14) of the operating part (8) and / or the machine controller (9) can be converted into and output in a form that can be perceived by an operator.

6. Pipe and drain cleaning machine (1) according to claim 5, characterised in that at least one of the output means (13) is an optical output means (13).

7. Pipe and drain cleaning machine (1) according to any of claims 1 to 6, characterised in that the operating part (8) is arranged to be spaced apart from the hand lever (5) and in that input means (10) of the operating part (8) are accessible from a handle portion (22) of the hand lever (5), wherein the hand lever (5) is grasped by the operator in the handle portion (22) when the pipe and drain cleaning machine (1) is used as intended, wherein a minimum spacing (24) formed between the handle portion (22) and each operating element of the operating part (8) is greater than the hand span width of a male hand (23) when the drain snake (21) is inserted into the clamping jaw system (2) and the hand lever (5) is actuated, such that simultaneous operation of the hand lever (5) and the operating part (8) by a single hand (23) is prevented.

8. Pipe and drain cleaning machine (1) according to any of claims 1 to 6, characterised in that the operating part (8) is arranged to be spaced apart from the hand lever (5) and in that input means (10) of the operating part (8) are accessible from a handle portion (22) of the hand lever (5), wherein the hand lever (5) is grasped by the operator in the handle portion (22) when the pipe and drain cleaning machine (1) is used as intended, wherein a minimum spacing (24) formed between the handle portion (22) and each operating element of the operating part (8) is greater than 30 cm when the drain snake (21) is inserted into the clamping jaw system (2) and the hand lever (5) is actuated, such that simultaneous operation of the hand lever (5) and the operating part (8) by a single hand (23) is prevented.

9. Pipe and drain cleaning machine (1) according to any of the preceding claims, characterised in that the safety rule comprises a rotation switching lock, wherein, by means of the rotation switching lock, directly switching from a first rotational direction of the clamping jaw system (2) into a second rotational direction of the clamping jaw system (2) is defined as an undesired operating state, wherein the rotation switching lock defines a desired operating state as switching between the rotational directions of the clamping jaw system (2) via a stopped state, in which the clamping jaw system (2) is stopped such that switching the rotational direction by means of the machine controller (9) always takes place via the stopped state of the clamping jaw system (2).

10. Pipe and drain cleaning machine (1) according to any of claims 5 to 9, characterised in that a monitoring apparatus is implemented in the machine controller (9) and / or the operating part (8), wherein at least one state parameter and / or at least one operating parameter of the pipe and drain cleaning machine (1) can be monitored by means of the monitoring apparatus, wherein the monitoring apparatus is or can be brought into an operative connection with the at least one output means (13) such that the operator can be informed of the at least one state parameter and / or at least one operating parameter by the monitoring apparatus by means of the output means (13).

11. Pipe and drain cleaning machine (1) according to claim 10, characterised in that the monitoring apparatus comprises a switch element and / or is or can be brought into an operative connection with a switch element, wherein the switch element is or can be brought into an operative connection with the machine controller (9) and / or the operating part (8) such that the pipe and drain cleaning machine (1) can be switched off by the monitoring apparatus and / or the operating part (8) of the pipe and drain cleaning machine can be locked for inputs by the operator.

12. Pipe and drain cleaning machine (1) according to any of claims 1 to 11, characterised in that the machine frame (6) comprises a top frame (15), which extends from a front end portion (16) of the pipe and drain cleaning machine (1), in which the drain snake (21) exits the pipe and drain cleaning machine (1) when the drain snake (21) is arranged as intended in the pipe and drain cleaning machine (1), to a rear end portion (17) of the pipe and drain cleaning machine (1), in which the drain snake (21) can be introduced into the pipe and drain cleaning machine (1), wherein the top frame (15) does not comprise any fins, ribs or other reinforcement structures on a top side (18) facing away from the standing surface.

13. Pipe and drain cleaning machine (1) according to claim 12, characterised in that the top frame (15) comprises an operating-part receptacle (20), in which the operating part (8) can be arranged.

14. Pipe and drain cleaning machine (1) according to claim 13, characterised in that the operating-part receptacle (20) is integrally formed with the top frame (15).

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