CN218563076U

CN218563076U - Traction device and engineering machinery

Info

Publication number: CN218563076U
Application number: CN202222287778.8U
Authority: CN
Inventors: 曾中炜; 唐志杰; 吴亮
Original assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-03-03
Anticipated expiration: 2032-08-29

Abstract

The utility model provides a draw gear and engineering machine tool, draw gear includes: the traction disc is used for being connected with a material conveying pipe at the tail end of the arm support; the induction ring is arranged on the traction disc and is annularly arranged outside the material conveying pipe; the traction sliding block is connected with the traction disc and corresponds to the induction ring, the induction head is installed on the traction sliding block, the traction sliding block can move relative to the traction disc and drives the induction head to revolve around the induction ring, and the induction ring is used for detecting the traction angle of the induction head and sending the traction angle to engineering machinery. The utility model provides a draw gear passes through traction disc, induction ring and pulls the cooperation of slider three, can detect the traction mode with the inclination that bears a burden and pull the hose, converts the external direction that pulls the revolution of the relative induction ring of inductive head into and pulls, can avoid leading to the fact the potential safety hazard that the cantilever crane is out of control because of the difficult discovery of inclination, has cancelled the heavy burden among the prior art and has pulled, has improved the efficiency of construction.

Description

Traction device and engineering machinery

Technical Field

The utility model belongs to the technical field of engineering machine tool, especially, relate to a draw gear and engineering machine tool.

Background

At present, the professional degree of control of the pump truck arm support is high, and a skilled manipulator is needed to operate the arm support according to the requirements of a construction party better, so that the cloth point is moved to carry out reasonable cloth. In the prior art, a sensing driving mechanism is usually arranged and fixed on a hose of a pump truck arm support and surrounds the hose in an orientation manner, and comprises two orthogonal tilt angle sensors and a signal transmitter; the method comprises the following steps that constructors pull the hose, and the direction is analyzed by detecting the inclination direction of the hose, so that the direction in which the constructors pull the hose is identified; and finally, driving the arm support to move towards the direction that constructors pull the hose through the pump truck control system.

However, the used hose is fixed with concrete, so that the hose can be dragged only by the aid of a large force in the operation mode of the arm support, the labor intensity is high, the hose is easy to leave in one direction because the hose cannot be reset to be in a vertical state, the arm support is out of control, and construction potential safety hazards exist; and because of the load, the moving speed of the constructor is difficult to follow the moving speed of the arm support, so that the application of the operation mode of the arm support is limited, and the construction efficiency is influenced.

Disclosure of Invention

The utility model mainly aims at providing a draw gear and engineering machine tool, aim at solving among the prior art technical problem that there is potential safety hazard and efficiency of construction low in the cantilever crane operation mode.

In order to achieve the above object, the utility model provides a traction device for engineering machine tool's cantilever crane, traction device includes: the traction disc is used for being connected with a material conveying pipe at the tail end of the arm support; the induction ring is arranged on the traction disc and is annularly arranged outside the material conveying pipe; the traction sliding block is connected with the traction disc and corresponds to the induction ring, the induction head is installed on the induction ring, the traction sliding block can move relative to the traction disc and drive the induction head to revolve around the induction ring, and the induction ring is used for detecting the traction angle of the induction head and sending the traction angle to engineering machinery.

In an embodiment of the present invention, the traction disc is provided with an annular track groove slidably fitted to the traction slider, the annular track groove and the induction ring are coaxially disposed.

The embodiment of the utility model provides an in, the traction disc is provided with the confession the well cavity that the conveying pipeline passed, well cavity with the shape phase-match of conveying pipeline, well cavity the chamber wall be used for with the laminating of the inseparable face of conveying pipeline, well cavity the annular track groove with the induction ring is nested and coaxial setting from inside to outside in proper order.

In an embodiment of the present invention, the traction disc includes: the hollow cavity is arranged in the mounting cylinder; the limiting track ring is annularly arranged outside the mounting cylinder, a supporting plate is supported between the mounting cylinder and the limiting track ring, the mounting cylinder, the limiting track ring and the supporting plate are encircled to form the annular track groove, and the limiting track ring is used for resisting and limiting the traction sliding block.

In an embodiment of the present invention, the traction slider includes: the sliding block main body is provided with a protection cavity into which the limiting track ring extends, and the induction head is arranged in the protection cavity; and the limiting baffle is arranged in the slider main body and stretches into the annular track groove, the limiting track ring is used for abutting the limiting baffle, and the limiting baffle is externally rotatably sleeved with an inner roller in rolling contact with the limiting track ring.

The embodiment of the utility model provides an in, pull the slider still including being located the splint of protection intracavity, the outer rotatable cover of splint is equipped with outer gyro wheel, spacing track ring card is located interior gyro wheel with between the outer gyro wheel.

In an embodiment of the present invention, the axial end of the limiting track ring protrudes from the supporting plate, so that both sides of the thickness direction of the supporting plate are formed with the annular track groove.

The embodiment of the utility model provides an in, the surface of an installation section of thick bamboo is provided with the reference direction mark, the axial tip of an installation section of thick bamboo all protrusion in spacing track ring, the reference direction mark is close to the axial tip setting of an installation section of thick bamboo.

In an embodiment of the present invention, the traction device further includes: the knob is mounted on the traction disc and can move relative to the traction disc; the clamping plate is connected with the knob and used for clamping or loosening the conveying pipeline under the driving of the knob.

In an embodiment of the present invention, the traction device further comprises a traction rope connected to the traction block.

The utility model discloses still provide an engineering machine tool, engineering machine tool including the cantilever crane that has the conveying pipeline and as above draw gear.

Through the technical scheme, the embodiment of the utility model provides a draw gear has following beneficial effect:

when the traction device is used, the traction disc can be connected with the conveying pipeline, the traction device is adjusted to a height position suitable for operation of a constructor, the traction disc is fixedly fastened on the conveying pipeline, the induction ring is arranged outside the conveying pipeline in a surrounding mode, when a material distribution point of the conveying pipeline needs to be adjusted, the constructor can pull the traction sliding block to move relative to the traction disc and serve as a visual communication bridge between the constructor and a manipulator, the traction direction changes to be an external direction, what you see is what you get, the traction device is very visual, compared with the prior art, the inclination angle of the hose is not easy to observe, the manipulator can clearly know whether the operation is conducted by a non-constructor, and potential safety hazards of the manipulator disappointing safety use of equipment are eliminated. And constructors drag the traction sliding block to move to drive the induction head to realize revolution motion around the periphery of the induction ring, the induction ring detects the traction angle of the induction head, and the traction angle is sent to engineering machinery, so that the manipulator of the engineering machinery can control the arm support to drive the conveying pipe to move to a specified material distribution point, the condition that the constructors cannot follow the movement speed of the arm support due to the load movement speed is avoided, and the construction efficiency is improved no matter the movement speed of the arm support is slow or fast. The utility model provides a draw gear passes through traction disc, induction ring and pulls the slider cooperation, can convert the traction mode that drags the hose into and pull the comparatively external direction motion of the relative induction ring revolution of inductive head, can avoid causing the potential safety hazard that the cantilever crane is out of control because of difficult the discovering, has cancelled the heavy burden among the prior art and has pulled, has improved the efficiency of construction.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention, but do not constitute a limitation of the invention. In the drawings:

fig. 1 is a schematic structural view of a traction device according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a traction device according to another embodiment of the present invention;

FIG. 3 is a schematic view of a portion of the structure of FIG. 2;

fig. 4 is a schematic view of the traction device and the feed delivery pipe according to another embodiment of the present invention.

Description of the reference numerals

Reference numerals	Name (R)	Reference numerals	Name (R)
				100	Traction device	32	Sliding block main body
1	Traction disc	33	Protective cavity
				11	Annular track groove	34	Limit baffle
12	Hollow cavity	35	Inner roller
				13	Mounting cylinder	36	Clamping plate
14	Reference direction mark	37	External roller
				15	Spacing orbital ring	38	Mounting hole
16	Supporting plate	4	Rotary knob
				2	Induction ring	5	Card board
3	Traction sliding block	6	Traction rope
				31	Induction head	200	Material conveying pipe

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.

The traction device according to the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 to 4, in the embodiment of the present invention, the traction apparatus 100 is used for an arm support of an engineering machine, and the traction apparatus 100 includes a traction disc 1, an induction ring 2 and a traction slider 3; the traction disc 1 is used for being connected with a material conveying pipe 200 at the tail end of the arm support; the induction ring 2 is arranged on the traction disc 1 and is used for being annularly arranged outside the material conveying pipe 200; the traction sliding block 3 is connected with the traction disc 1 and corresponds to the induction ring 2 to be provided with the induction head 31, the traction sliding block 3 can move relative to the traction disc 1 and drive the induction head 31 to revolve around the induction ring 2, and the induction ring 2 is used for detecting the traction angle of the induction head 31 and sending the traction angle to the engineering machinery.

It is understood that the traction device 100 of the present embodiment is mainly applied to a pump truck, and the material conveying pipe 200 mainly adopts a hose for conveying concrete. The induction mode between the induction ring 2 and the induction head 31 can be realized by an electromagnetic induction mode, such as a magnetostrictive principle: the induction head 31 is a permanent magnet, the induction ring 2 is an annular magnetostrictive rod, and power supply and signals of the induction ring 2 can be led out through a cable and then are connected with the pump truck.

When the traction device 100 in the embodiment is used, the traction disc 1 can be connected with the material conveying pipe 200, the traction device 100 is adjusted to be at a height position suitable for operation of a constructor, the traction disc 1 is fixedly fastened on the material conveying pipe 200, the induction ring 2 is arranged outside the material conveying pipe 200 in a surrounding mode, and when a material distribution point of the material conveying pipe 200 needs to be adjusted, the constructor can drag the traction sliding block 3 to move relative to the traction disc 1 to serve as a visual communication bridge between the constructor and a manipulator, so that the traction direction change is an external direction, namely what you see is what you get, the method is very intuitive, the inclination angle detection which is difficult to observe in the prior art is replaced, the manipulator can clearly know whether the traction operation is operation of the constructor or, and the potential safety hazard of the manipulator to overlook equipment is eliminated.

And constructors drag the traction sliding block 3 to move, the induction head 31 is driven to realize revolution motion around the periphery of the induction ring, the induction ring 2 detects the traction angle of the induction head 31, the traction angle is sent to engineering machinery, the manipulator of the engineering machinery can control the arm support to drive the conveying pipe 200 to move to a specified material distribution point, the heavy burden motion that the constructors directly drag the conveying pipe 200 is cancelled, the condition that the moving speed of the constructors cannot follow the moving speed of the arm support can be avoided, no matter the moving speed of the arm support is slow or fast, the traction operation can be carried out, and the construction efficiency is improved.

The traction device 100 in this embodiment can convert the traction mode of dragging the hose into the relatively outward direction movement of dragging the inductive head 31 relative to the revolution of the inductive ring 2 by matching the traction disc 1, the inductive ring 2 and the traction slider 3, so that the potential safety hazard that the arm support is out of control due to the fact that the inclination angle is not easy to perceive can be avoided, the load traction in the prior art is cancelled, and the construction efficiency is improved.

In one embodiment, the traction disc 1 is provided with an annular track groove 11 in sliding fit with the traction slider 3, and the annular track groove 11 and the induction ring 2 are coaxially arranged. In this embodiment, by providing the annular track groove 11 in sliding fit with the traction slider 3, the movement track of the traction slider 3 can be accurately limited, and the situation that the traction slider 3 is separated from the sliding track is avoided. In addition, the annular track groove 11 and the induction ring 2 are coaxially arranged in the embodiment, so that the traction angle of the induction head 31 relative to the induction ring 2 can be conveniently calculated after the traction sliding block 3 slides.

As shown in fig. 1 and fig. 2, specifically, the traction disc 1 is provided with a hollow cavity 12 for a feeding pipe 200 to pass through, the hollow cavity 12 is matched with the feeding pipe 200 in shape, the cavity wall of the hollow cavity 12 is used for being tightly attached to the feeding pipe 200, and the hollow cavity 12, the annular track groove 11 and the induction ring 2 are sequentially nested and coaxially arranged from inside to outside. As shown in fig. 2, in this embodiment, the hollow cavity 12, the annular track groove 11, and the induction ring 2 are sequentially nested and coaxially disposed from inside to outside, and after the feeding pipe 200 passes through the hollow cavity 12, the cavity wall of the hollow cavity 12 is annularly disposed outside the feeding pipe 200, so that the protection and connection area of the traction disc 1 to the feeding pipe 200 can be increased, and the use stability of the traction apparatus 100 is improved while the traction disc 1 is convenient to install.

Specifically, the traction disc 1 comprises a mounting cylinder 13 and a limiting orbital ring 15; the hollow cavity 12 is arranged in the mounting cylinder 13; the limiting track ring 15 is annularly arranged outside the installation barrel 13, a supporting plate 16 is supported between the installation barrel 13 and the limiting track ring 15, the installation barrel 13, the limiting track ring 15 and the supporting plate 16 are enclosed to form an annular track groove 11, and the limiting track ring 15 is used for abutting against a limiting sliding block main body 32. Installation section of thick bamboo 13 in this embodiment is cylindrical hollow tubular structure, specifically forms annular track groove 11 with the mode that spacing track ring 15 propped away installation section of thick bamboo 13 through backup pad 16, for drawing slider 3 and providing the sliding space, spacing track ring 15 can keep out spacing traction slider 3 to avoid drawing the condition that slider 3 breaks away from annular track groove 11 orbit, further guaranteed the movement track who draws slider 3.

In one embodiment, the traction sheave 3 comprises a sheave body 32 and a limit stop 34; the slide block main body 32 is provided with a protective cavity 33 for the guide rail ring of the limiting track ring 15 to extend into, and the induction head 31 is arranged in the protective cavity 33; the limiting baffle 34 is installed on the slider main body 32 and extends into the annular track groove 11, the limiting track ring 15 is used for resisting the limiting baffle 34, and the limiting baffle 34 is rotatably sleeved with an inner roller 35 which is used for being in rolling contact with the limiting track ring 15. As shown in fig. 2, the cross section of the slider main body 32 in this embodiment is U-shaped, the protection cavity 33 cooperates with the limit baffle 34 to limit the limit baffle 34, and can protect the sensing head 31 in the protection cavity 33, thereby avoiding the sensing head 31 from being damaged by external components. Annular track groove 11 provides the sliding space for limit baffle 34, can guarantee limit baffle 34 to the spacing cooperation of limit track ring 15 all the time.

As shown in fig. 3, in the embodiment of the present invention, the traction block 3 further includes a clamp plate 36 located in the protection cavity 33, an outer roller 37 is rotatably sleeved outside the clamp plate 36, and the limiting track ring 15 is clamped between the inner roller 35 and the outer roller 37. In this embodiment, the inner and outer sides of the limiting track ring 15 are respectively provided with the inner roller 35 and the outer roller 37, so that the matching stability between the traction disc 1 and the traction slider 3 is improved, and the movement compliance of the traction slider 3 is improved.

In one embodiment, the supporting plate 16 is disposed around the mounting cylinder 13 and vertically connected to the mounting cylinder 13, the length of the limiting track ring 15 is greater than the thickness of the supporting plate 16, and the axial end of the limiting track ring 15 protrudes from the supporting plate 16, so that the two sides of the supporting plate 16 in the thickness direction form the annular track grooves 11. The supporting plate 16 in this embodiment is an annular flat plate, the limiting track ring 15 and the mounting cylinder 13 are both hollow cylindrical structures, and the supporting plate 16 can ensure that the outer edge of the mounting cylinder 13 is connected with the inner wall of the limiting track ring 15, so that the connection stability between the limiting track ring 15 and the mounting cylinder 13 is improved, and as shown in fig. 2, the supporting plate 16 is located at a lower position in the middle of the mounting cylinder 13. Through the length with spacing track ring 15 being greater than the thickness of backup pad 16, and the axial tip of spacing track ring 15 all protrudes in backup pad 16, make backup pad 16's upper and lower both ends all be formed with annular track groove 11, the upper and lower both ends of pulling slider 3 all are provided with limit baffle 34 and splint 36, the upper and lower both ends that enable to pull slider 3 all with annular track groove 11 sliding fit, and it is spacing to spacing track ring 15 relatively, thereby the improvement pulls the stability of complex between slider 3 and the spacing track ring 15.

The embodiment of the utility model provides an in, the surface of installation section of thick bamboo 13 is provided with reference direction mark 14, and the length of installation section of thick bamboo 13 is greater than the length of spacing orbital ring 15, and the axial tip of installation section of thick bamboo 13 all protrudes in spacing orbital ring 15, and reference direction mark 14 is close to the axial tip setting of installation section of thick bamboo 13. As shown in fig. 4, the reference direction mark 14 is a mark pattern located above the traction sliding block 3, and in other embodiments, the reference direction mark 14 may be a protruding mark, a mark lamp, or the like, which is not limited by the present invention. The initial calibration of the induction head 31 can be completed by dragging the traction slider 3 to a position aligned with the reference direction mark 14, and the position of the reference direction mark 14 is used as a calibration position. After the induction head 31 is calibrated, the subsequent angle calculation after the revolution motion of the induction head 31 can be facilitated, and the efficiency and the accuracy of the traction construction of the material conveying pipe 200 are improved.

In the embodiment of the present invention, the traction device 100 further includes a knob 4 and a clamping plate 5; the knob 4 is arranged on the traction disc 1 and can move relative to the traction disc 1; the clamping plate 5 is connected with the knob 4, and the clamping plate 5 is used for clamping or loosening the material conveying pipe 200 under the driving of the knob 4. In an embodiment, the clamping plate 5 is an arc-shaped plate, the knob 4 is in threaded connection with the mounting cylinder 13 of the traction disc 1, and can extend out or contract relative to the hollow cavity 12 in a threaded rotation mode and drive the clamping plate 5 to move, so that the clamping plate 5 can clamp or loosen the material conveying pipe 200, the traction device 100 is further fastened on the material conveying pipe 200, and the traction device 100 is more stable and convenient to use. In order to improve the structural strength of the mounting cylinder 13, the mounting cylinder 13 can be provided with an avoiding groove for avoiding the clamping plate 5.

Wherein the traction device 100 further comprises a traction rope 6 connected to the traction sheave 3. The mounting hole 38 that supplies haulage rope 6 to pass is seted up to traction sliding block 3, and haulage rope 6 can be through the mode of tie and traction sliding block 3 can dismantle the connection to the convenient regulation to haulage rope 6 length, and haulage rope 6 can make things convenient for the constructor to pull traction sliding block 3.

The utility model discloses still provide an engineering machine tool, engineering machine tool including the cantilever crane that has conveying pipeline 200 and as above draw gear 100, the concrete structure of this conveying pipeline 200 refers to above-mentioned embodiment. Since the engineering machine adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here, in one embodiment, the engineering machine is a concrete pump truck.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A towing attachment for an arm rest of a construction machine, characterized in that the towing attachment (100) comprises:

the traction disc (1) is used for being connected with a material conveying pipe (200) at the tail end of the arm support;

the induction ring (2) is arranged on the traction disc (1) and is annularly arranged outside the feed delivery pipe (200);

traction slider (3), with traction disc (1) is connected and is corresponded induction ring (2) are installed induction head (31), traction slider (3) can be relative traction disc (1) motion, and drive induction head (31) wind induction ring (2) revolution, induction ring (2) are used for detecting induction head (31) pull the angle and will pull the angle and send to engineering machine tool.

2. A traction device according to claim 1, characterized in that the traction disc (1) is provided with an annular track groove (11) in sliding engagement with the traction slider (3), the annular track groove (11) being arranged coaxially with the induction ring (2).

3. The draft gear according to claim 2, wherein said draft gear (1) is provided with a hollow cavity (12) for said feed delivery pipe (200) to pass through, said hollow cavity (12) and said feed delivery pipe (200) are matched in shape, the cavity wall of said hollow cavity (12) is adapted to closely fit with said feed delivery pipe (200), and said hollow cavity (12), said annular track groove (11) and said induction ring (2) are sequentially nested and coaxially arranged from inside to outside.

4. Traction device according to claim 3, characterized in that said traction disc (1) comprises:

the hollow cavity (12) is arranged in the mounting cylinder (13);

limiting track rings (15) are annularly arranged outside the mounting cylinder (13), a supporting plate (16) is supported between the mounting cylinder (13) and the limiting track rings (15), the mounting cylinder (13), the limiting track rings (15) and the supporting plate (16) are enclosed to form the annular track groove (11), and the limiting track rings (15) are used for abutting against and limiting the traction sliding block (3).

5. Traction device according to claim 4, characterized in that said traction slider (3) comprises:

the sliding block main body (32) is provided with a protection cavity (33) into which the limiting track ring (15) extends, and the induction head (31) is installed in the protection cavity (33);

limit baffle (34), install in slider main part (32) and stretch into in annular track groove (11), limit track ring (15) are used for keeping out limit baffle (34), just limit baffle (34) outer rotatable cover be equipped with limit track ring (15) rolling contact complex interior gyro wheel (35).

6. The traction device according to claim 5, characterized in that the traction block (3) further comprises a clamping plate (36) located in the protection cavity (33), an outer roller (37) is rotatably sleeved outside the clamping plate (36), and the limiting track ring (15) is clamped between the inner roller (35) and the outer roller (37).

7. The traction apparatus according to claim 4, wherein the axial end portions of the limit track rings (15) are each protruded from the support plate (16) such that the annular track grooves (11) are formed on both sides in the thickness direction of the support plate (16).

8. A towing attachment as claimed in claim 4, characterised in that the mounting tube (13) is provided with datum direction markings (14) on its outer surface, the axial ends of the mounting tube (13) each projecting beyond the stop track ring (15), the datum direction markings (14) being provided adjacent the axial ends of the mounting tube (13).

9. Traction device according to any one of claims 1 to 8, characterized in that said traction device (100) further comprises:

the knob (4) is arranged on the traction disc (1) and can move relative to the traction disc (1);

the clamping plate (5) is connected with the knob (4), and the clamping plate (5) is used for clamping or loosening the material conveying pipe (200) under the driving of the knob (4).

10. Traction device according to any of claims 1 to 8, characterized in that the traction device (100) further comprises a traction rope (6) connected to the traction sheave (3).

11. A working machine, characterized in that the working machine comprises a boom with a feed conveyor pipe (200) and a towing installation (100) according to any one of claims 1 to 10.