185 results about "Pull off force" patented technology

A weightlifting system includes a frame with lower, middle, and upper pulley stations mounted therein. A load attachment structure is provided within the system. A cable-pulley system includes a plurality of fixed pulleys mounted to the frame, first and second moveable pulleys, and a floating load pulley mounted to the load attachment structure. A plurality of cables is collectively routed through the first and second movable pulleys, the plurality of fixed pulleys, the floating load pulley, and the lower, middle, and upper pulley stations. When a first pulling force is applied to a first cable end accessible from the lower pulley station, the first movable pulley and the load pulley translate. When a second pulling force is applied to a second cable end accessible from the upper pulley station, the second movable pulley and the load pulley translate. When a third pulling force is applied to a third cable end accessible from the middle pulley station, only the load pulley translates.

The utility model relates to the technical field of optical fiber connectors, and discloses a push-pull device for an optical fiber connector, and the device comprises a housing which is in transmission connection with an insertion core; the tail sleeve is connected with the shell through at least two crossed limiting structures, and the at least two crossed limiting structures are asymmetrically distributed in the direction perpendicular to the axial direction of the push-pull device; when the tail sleeve is pushed and pulled, the shell and the insertion core can move in the axial direction of the push-pull device, and the push-pull tail sleeve is flexible in the axial direction of the push-pull device. The asymmetrically-arranged cross limiting structures can form restraining force distributed in a staggered mode in the radial direction and the axial direction, and the inclination or torsion phenomenon caused by single-side stress of the outer shell and the tail sleeve is effectively restrained. Due to asymmetric distribution, push-pull force can be dispersed and transmitted in different directions, stress concentration or local abrasion caused by a symmetric structure is avoided, the loosening or clamping stagnation phenomenon caused by external force or improper operation is reduced, and the stability and reliability of connection between the tail sleeve and the shell are improved. The utility model further discloses an optical fiber connector.

A controller that detects a pressing force and a pulling force only by the movement of a fingertip is provided. The controller of the present invention that detects a pressing force and a pulling force includes a housing, a film-type three-axis force sensor, and an operating unit. The force sensor is disposed on the surface of the housing and is configured to detect forces along three axes applied by a finger of a user. The operating unit covers the surface of the active area of the force sensor. The operating unit also has a pressing surface to be pressed by a finger pad of the finger; and a constraining surface on which the finger is to be constrained such that when the finger moves in a direction away from the pressing surface, a pulling force is applied to the surface of the active area of the force sensor.

The design method of the non-linear term offset moving-magnet vibrator meets the following conditions: (1) a moving-magnet vibrator body comprises an outer cylinder, a vibration transmission sheet, a stator assembly and a rotor assembly; and (2) the mover assembly is subjected to electromagnetic acting force of pushing force and pulling force in pairs at the same time and presents a push-pull type structural characteristic, so that linear terms in the acting force borne by the mover assembly are overlapped and become larger, and non-linear terms in the acting force borne by the mover assembly are partially or completely counteracted and are reduced, so that the linear terms in the acting force borne by the mover assembly are reduced, and the linear terms in the acting force borne by the mover assembly are reduced. And obtaining the moving magnet type vibrator with the counteracted nonlinear term.

The invention belongs to the technical field of connecting devices, and particularly relates to a push-pull type network connector, aiming at signal interruption and equipment interface damage caused by overlarge pulling force, the push-pull type network connector comprises an equipment main body, one side of the equipment main body is provided with a connecting seat, and a connector lug is inserted in the connecting seat; the connector lug is provided with a tensile module, and the tensile module comprises a metal telescopic protective sleeve. The push-pull type network connector has the advantages that accidental pulling force is converted into force for driving the locking mechanism to integrally move backwards through a linkage structure by the tensile module, direct unlocking is changed into follow-up buffering, mistaken pulling is fundamentally avoided, automatic reset is achieved in cooperation with an elastic element, continuous and reliable connection is guaranteed, and on the premise that complex electric control is not increased, the safety of the network connector is improved. The impact is effectively absorbed to protect the interface, the signal transmission is not interrupted under the conventional pulling, and the anti-interference capability and the stability of the connector are obviously improved.

According to the thin-wall annular workpiece self-relief clamping device, a flange plate is used for being connected with a machine tool, one end of the flange plate is connected with a positioning body, a push-pull shaft is connected with a supporting disc, and the supporting disc is limited between the positioning body and the flange plate; one end of the positioning body is connected with a positioning backer, an internal expansion chuck is arranged between the positioning backer and the positioning body in a sliding fit mode, the internal expansion chuck is connected to the push-pull shaft, the positioning body is in contact with the internal expansion chuck through a conical surface, a workpiece is arranged on the outer circle face of the internal expansion chuck in a sleeving mode, and the end face of the workpiece abuts against one end of the positioning backer; the positioning device further comprises an elastic piece which is arranged between the flange plate and the supporting plate or between the supporting plate and the positioning body. Compared with the prior art, the elastic piece is additionally arranged between the flange plate and the supporting plate, the elastic piece plays a role in releasing force, the normal stress of the elastic piece on the push-pull shaft just counteracts the overlarge pulling force of the hydraulic oil cylinder on the push-pull shaft, and deformation of the thin-wall annular workpiece is avoided.

The present application relates to a kind of new multifunctional anchoring device for pull test, the device includes two identical clamps, respectively, upper clamping part and lower clamping part are arranged vertically, each of the described clamp includes end plate connected to apply pressure and support plate to clamp one end of test piece, the end plate and support plate are connected by screw rod, load transfer block is arranged on the screw rod to transfer force, square hole is respectively opened on the support plate to pass through load transfer block, the press is used to apply pressure to upper end plate and lower end plate, the upper clamping part, lower clamping part, press and load transfer block cooperate to realize the tension test and pressure test to test piece.Compared with prior art, the present application has the advantages of simple structure, easy assembly and disassembly and improving the accuracy of measurement data.

The application provides a pull-off force and rope length testing device and a testing method. The pull-off force and rope length testing device comprises a testing table, a first clamp and a second clamp configured to clamp a first end and a second end of a rope to be tested respectively, the second clamp being movably arranged on the testing table, a force sensor fixed to the testing table, a detection end of the force sensor being connected with the first clamp, a displacement sensor and a driving assembly, both being arranged on the testing table and connected with the second clamp respectively, the driving assembly being configured to drive the second clamp to move relative to the first clamp so that the rope to be tested bears a preset pull-off force, and a control unit electrically connected with the force sensor, the displacement sensor and the driving assembly. The application can automatically and uniformly load and maintain pressure through the driving assembly, the force sensor and the displacement sensor can detect the pull-off force and the displacement in real time, the control unit can acquire the pull-off force and the displacement data in real time and control the driving assembly to start and stop, thereby realizing a closed loop, not relying on manual operation, small error and high testing precision.

The utility model discloses a kind of pull-out force testers, it is related to pull-out force test technical field, including base;Two bracing bars are fixedly installed on base;Bracing bar top is fixedly installed with top plate;Between top plate and base, screw rod is movably installed;One end of screw rod is fixedly installed with driving motor;Lifting plate is movably installed on screw rod;One end of lifting plate is fixedly installed with U-shaped frame;U-shaped frame bottom is fixedly installed with tensioner;The tensioner is electrically connected with tester by data line;The tester is fixedly installed with fixed frame;The bottom of fixed frame is fixedly installed with base;In carrying out pull-out force test, driving motor moves upwards by screw rod and the tensioner of U-shaped frame bottom installation lifting plate, effectively detect the pull-out force of fixed fiber, when fiber is pulled out, the tension exerted on tensioner is transmitted to tester by data line, to ensure the accuracy of detection value.

The utility model relates to maintenance tool technical field discloses a kind of anti-pulling wheel devices, including nut, with the screw rod being connected in nut through thread, at least two support arms being arranged around nut along circumferential direction and the draw hook being arranged on each support arm, pull rod is equipped between the draw hook and screw rod, second pin is inserted on the support arm, the side of draw hook upper portion close to screw rod is rested on second pin, one end of pull rod is hinged with the middle part of draw hook, other end is hinged with the part between second pin and nut of support arm.In work, pull rod pulls draw hook, and simultaneously, because the outer circle of draw hook upper portion is rested on second pin, according to lever principle, the pulling force of pull rod acting on draw hook will exert clamping force towards screw rod axis to the hook tip of draw hook bottom, so as to clamp the component to be disassembled, prevent the hook tip from loosening from pulley, and then cause the disassembly failure of the component to be disassembled.

The invention relates to an energy guide chain (4) with an arrangement for monitoring the energy guide chain including a detector (40) with the pull rope (22). The monitoring arrangement includes a flexible outer sheath (20) rigid in compression in a pull direction, in which at least one longitudinal portion of the pull rope (22) is guided. The outer sheath (20) with the longitudinal portion of the pull rope (22) extending therein are guided by the energy guide chain (4). According to at least one embodiment, the detector (40) is configured to identify relative motion of the pull rope (22) relative to the outer sheath (20).

1. Name of the design product: Double-arm tension testing machine (pneumatic clamp). 2. Use of the design product: The design product is used for tension testing machine for tension test. 3. Design points of the design product: in shape. 4. Picture or photo that best indicates the design points: Design 1 perspective view. 5. Design 1 is designated as the basic design.

The utility model discloses a geological exploration cable with antiskid and tensile functions, which comprises a cable assembly, and a fixing assembly convenient to assemble and disassemble is arranged on the outer side of the cable assembly. The cable assembly comprises a keel, an inner sheath is fixedly installed on the outer side of the keel, a plurality of sets of cable bodies are evenly placed in a gap between the keel and the inner sheath, and an armored metal belt is arranged on the outer side of the inner sheath. The friction force in the cable traction process is increased, the anti-skid effect of the cable is achieved, anti-skid threads can reduce the abrasion of the cable, the effect of reducing the traction pulling force borne by the cable body is achieved through the arrangement of the keel and the inner sheath in the center of the interior, and the armored metal belt and the tensile steel wire arranged in the middle layer are matched. The overall tensile strength of the cable assembly is further improved, so that the anti-skid and anti-traction efficiency of the cable is improved.

The invention discloses a submarine pipeline novel repair technology construction multifunctional dragging head which comprises a shell, a pull rod and a tension sensor, the shell comprises a first shell body, a second shell body, a third shell body and an inner shell body, the two ends of the second shell body are connected with the first shell body and the third shell body respectively, the inner shell body is arranged in the first shell body, the inner shell body is in a hemispherical shape, and the pull rod is arranged in the inner shell body. An inner cavity of the first shell is in a hemisphere shape matched with the inner shell, the inner shell can slide in a hemisphere shape relative to the first shell, the first shell and the inner shell are provided with through holes corresponding to the pull rod, the pull rod stretches into the inner shell through the through holes and is rotationally connected with the inner shell, a tension sensor is arranged in the second shell, and the third shell is connected with the tension sensor. According to the invention, in offshore construction and simulation test scenes, the multi-elbow complex-path subsea pipeline can be adapted, in-pipe visual detection and dragging tension data acquisition are synchronously realized, and support is provided for operation safety assessment, process optimization and fault pre-judgment.

The invention belongs to the technical field of endoscopes, and discloses a cable fixing mechanism and an operating handle. The cable fixing mechanism comprises a guide piece, a fixing assembly and an elastic sealing piece. When the cable is pulled, the pulling force acts on the elastic sealing element firstly, the elastic sealing element can deform along with the elastic sealing element to convert concentrated pulling force into dispersed deformation stress, and the pulling force is prevented from acting on a single position in a concentrated mode. And meanwhile, the relative positions of the cable and the guide channel are locked by the fixing assembly, so that the cable is fixed at two positions, and the cable can be effectively prevented from being fixed to be invalid. Besides, the inlet of the guide channel is fixed with the cable in a sealing manner, and the follow-up deformation of the elastic sealing element does not damage the sealing structure of the inlet of the guide channel and the cable, that is, even if the cable is subjected to pulling displacement, the elastic sealing element adapts to displacement change through self deformation and always keeps tight fit sealing with the cable, so that the service life of the cable is prolonged. Therefore, the anti-pulling and high-grade waterproof sealing requirements are met at the same time.

The utility model discloses a crimping wire pulling-out force detection device. The crimping wire pulling-out force detection device is mainly composed of a bottom plate, a tension sensor fixing plate, a driver, a tension sensor, a sliding table module, a transmitter, a stepping motor, a case, a PLC and the like. The machine case, the bottom plate installed on the machine case, the driver arranged in the machine case, the transmitter, the PLC, the display screen and the starting switch are installed on the machine case. The sliding table module is mounted on the bottom plate, and the stepping motor is arranged on the sliding table module. The tension sensor fixing plate and the tension sensor fixing plate are mounted on the bottom plate, and the tension sensor is arranged on the tension sensor fixing plate. The utility model provides a crimping wire pulling-out force detection device. The crimping wire pulling-out force detection device has the advantages of ensuring uniform pulling-out speed, automatically acquiring data, being high in reliability, convenient to operate and the like.

The application discloses a spring pull rod tensile property testing method and device, which comprises the following steps: installing a tensile property testing device on an upper connecting head of a tension testing machine and fixing the same by using a pin; connecting upper and lower end heads of the spring pull rod in the tensile property testing device and fixing the same by using a pin; setting a program, and the testing machine is stretched upwards to detect a load value under a fixed elongation; the spring pull rod tensile property testing special device comprises an upper connecting device and a lower connecting device; the friction force of a nut and a connecting head of the testing machine can be increased by rotating and tightening the nut, the device and the connecting head of the testing machine can be tightly combined without loosening, and the accuracy of test data is ensured. The method is simple and easy to implement, the test device can reduce the influence on the measurement result, and the installation operation is simple.

The application relates to the technical field of pull-off valve flow detection, and discloses a pull-off valve flow test equipment, which comprises a test water tank, a colorant mixing mechanism arranged on one side of the test water tank, a pulling force test mechanism arranged on the other side of the test water tank, a flow test mechanism arranged in the test water tank, observation windows symmetrically arranged on the inner walls of the two sides of the test water tank, and a liquid level meter arranged on the inner wall of one side of the test water tank. The pull-off valve flow test equipment keeps the water in the test water tank in a state of submerging the flow test mechanism, the colorant mixing mechanism dyes the water in the pull-off valve body, the pulling force test mechanism applies pulling force to the pull-off valve body, and the change of the flow loss of the pull-off valve body under different pulling force states can be more directly observed when the pull-off valve is pulled off; the observation windows can directly observe the color amount; the liquid level meter can measure the change of the liquid level of the added dyed liquid, and then the flow data can be measured and collected.

The utility model discloses a linear tension test device which comprises a tension transmission assembly, a force application assembly and a power assembly which are sequentially arranged on a test bed, the tension transmission assembly comprises a slidable guide seat arranged on the test bed, and a connecting rod is arranged on the guide seat; the force application assembly comprises at least two elastic force application cylinders, each elastic force application cylinder comprises a sleeve, an abutting ring is arranged at one end of each sleeve, two force application lug plates are arranged at the other end of each sleeve, and a pull rod is embedded in each sleeve; one end of the pull rod penetrates through the abutting ring and is provided with a pull ring, the other end of the pull rod is provided with a lock rod, and a spring is nested on the pull rod; the force application lug plate of the elastic force application cylinder on the front side is movably connected with the pull rod of the elastic force application cylinder on the rear side through a pin shaft I, the pull rod of the elastic force application cylinder on the foremost side is movably connected with the connecting rod, and the force application lug plate of the elastic force application cylinder on the rearmost side is movably connected with the power assembly; the device has the advantages of small test error, simple structure, flexibility and convenience in use, high adaptability and the like.

The utility model provides an elevator push-pull force detection device, and relates to the technical field of elevator detection, the elevator push-pull force detection device comprises a base, the upper surface of the base is provided with a driving assembly, the upper surface of the base is provided with two moving plates through the driving assembly, and the front surfaces of the two moving plates are provided with guide grooves; two guide grooves are formed in the two second sliding plates, guide plates are installed in the two guide grooves in a sliding mode, push-pull force detectors are installed on the surfaces of the two guide plates, and a positioning adjusting assembly for positioning the guide plates is arranged on the movable plate. When the push-pull force detector is used, the two second sliding plates move towards the surfaces close to each other, the positioning columns can be separated from the interiors of the positioning holes, the two first sliding plates can slide, the moving plate is driven to move at the same time, and the push-pull force detector is moved to a proper height for detection. The device can detect the elevator door at different heights.

The application discloses a few-parameter pull-frame control method, and establishes a multivariable optimization relation of a pull-frame tension F, a comprehensive resistance f of a hydraulic support and a pull-frame tension duration t1 according to a dynamics principle; and an optimal solution of the multivariable optimization relation is obtained by using a genetic algorithm. The application has the advantages that for the purpose of engineering application, the pull-frame process of the hydraulic support is simplified into two processes of pull-frame and free movement, the time required for the pull-frame tension is estimated by using the genetic algorithm before the pull-frame, so that the disadvantages of segmented pull-frame and real-time adjustment are avoided, the pull-frame control precision of the hydraulic support group is improved, the straightness of the hydraulic support group is ensured, the coal wall spalling, the hydraulic support being pressed to death, the roof falling and other accidents caused by the insufficient straightness of the hydraulic support group are fundamentally avoided, the low coal output efficiency problem is solved, and the production safety of the coal mine working face and the coal mine production benefit are ensured.

The invention relates to the technical field of wind power generation, and provides a blade for a wind driven generator and the wind driven generator. Each blade comprises a groove, a deformation part and a stay wire; the grooves are formed in the blades; the deformation part is connected to two opposite ends of the groove; the stay wire penetrates through the deformation part; the deformation part comprises a deformation pipe, two fixing pieces and a thin film; the two fixing pieces are arranged at the two ends of the deformation pipe correspondingly and arranged in the groove. One end of the film is connected with the deformation pipe, and the other end is connected with the outer side surface of the blade; the deformation part has a first state and a second state; in the first state, the stay wire is subjected to a pulling force, the deformation pipe is deformed into a straightened state along with tensioning of the stay wire, and the thin film is attached to the blade; and in the second state, the pull wire relieves the pulling force effect, the deformation pipe restores the bending state, and the film and the surface of the blade define a cavity, so that the airflow flowing state of the surface of the blade is changed, and the situation that the blade is damaged or even broken due to flutter is improved.

The utility model discloses an anti-pulling rivet head loose rivet which comprises a sleeve, the inner surface of the sleeve is provided with thread teeth, the outer surface of the thread teeth is in threaded connection with a bolt, the left side and the right side in the sleeve are each provided with two matching grooves, and the interiors of the two matching grooves are communicated with the inner surface and the outer surface of the sleeve. A protruding block and a limiting block are arranged on the inner surface and the outer surface of the matching groove correspondingly, the protruding block and the limiting block are fixedly connected with the inner surface and the outer surface of the sleeve correspondingly, a groove is formed in the bolt, and the interior of the groove communicates with the outer surface of the bolt. The protruding block of the matching groove in the sleeve is tightly connected with the groove in the bolt in a clamped mode, and strong anti-pulling support is provided for the whole structure. When the bolt is subjected to pulling force, the bolt can be effectively prevented from being directly pulled out of the sleeve through the limiting effect of the protruding block in the groove, and the limiting block arranged on the inner surface and the outer surface of the groove is matched with the unique structure that the limiting block is gradually enlarged away from the upper surface of the sleeve, and the key auxiliary effect is achieved in the anti-pulling process.

The utility model provides horizontal force load loading equipment which comprises a supporting frame, anchoring parts, pulleys, a pull rope, a connecting rope and a pulling force applying device, the supporting frame is used for being supported on a supporting face, the anchoring parts are connected with the bottom of the supporting frame and used for being anchored in the supporting face, and the anchoring parts are horizontally arranged at intervals. The pulley is vertically arranged in the left-right direction and rotatably arranged on the supporting frame in the front-back direction, the middle of the pull rope is hung on the pulley in the left-right direction, the two ends of the pull rope are located on the left side and the right side of the pulley respectively and naturally droop, and the tension applying device is lower than the pulley. The other end of the connecting rope is connected with a tension applying device. The horizontal force loading device can realize horizontal force loading, is simple and unique in structure, can be applied to a test room and a construction or detection site, can be designed into a smaller size according to requirements, is small in occupied space, and can be applied to the test room and the construction or detection site with smaller sites.

The utility model relates to the technical field of sliding doors, in particular to a V-shaped track structure. Comprising guide rails and slide rails; two rows of pulleys are arranged on the guide rail and are arranged in an axial symmetry mode, and the included angle between each pulley and the vertical shaft is alpha; the bottom face of the sliding rail makes contact with the sliding wheels. According to the V-shaped rail structure, the V-shaped wheels are good in guiding performance, can decompose vertical force of the sash, reduce gravity, reduce push-pull force, are made of stainless steel and are corrosion-resistant, the V-shaped wheels can reduce accumulation of dust and rainwater and prevent the dust and the rainwater from entering the pulleys, the service life of the pulleys is prolonged, and the V-shaped wheels can automatically prevent the sash from swinging. Each pulley can be replaced independently, replacement is more convenient, and the pulleys are mute pulleys.

The utility model provides a drawing faucet. The drawing faucet comprises a drawing pipe, a guide pipe and a positioning piece rotationally arranged on the drawing pipe. Through arrangement of the track guide groove in the inner wall of the guide pipe and the positioning point, the positioning piece moves upwards along the track guide groove when the drawing pipe is drawn out, and can suspend on the nearest positioning point when the drawing pipe retreats, so that the drawing pipe does not continue to retreat; and when the drawing pipe is drawn out again, the drawing pipe can move upwards again along the track guide groove, and the drawing pipe can return to the initial position, so that the drawing pipe can be suspended at a certain position when being drawn out, a user does not need to continuously apply pulling force to the drawing pipe in the drawing pipe using process, and the situation that the arm of the user is tired due to long-time use is avoided.

The utility model relates to the technical field of fixing buckles, and discloses a high-strength tension-resistant fixing buckle which comprises a connecting cloth block, a first tension cloth strip is arranged on one side of the connecting cloth block, and two second tension cloth strips located on the two sides of the first tension cloth strip are further arranged on one side of the connecting cloth block. Connecting ring pieces are arranged in the first tension cloth strip and the second tension cloth strip in a penetrating mode, and the first connecting cloth strip and the second connecting cloth strip are connected between the connecting ring pieces. According to the inflatable arch fixing buckle, due to the fact that the first connecting cloth strip and the second connecting cloth strip are bound to the side face of the inflatable arch, and meanwhile a fixing rope can be tied to the connecting ring piece on the second pulling cloth strip, the fixing strength and the pulling-resistant effect of the fixing buckle are improved, and the position of the fixing buckle can be adjusted on the side face of the piece to be fixed; and the application range of the fixing buckle during fixing is widened.

The application relates to a safety detection system and method for a pull-off valve, and the detection system comprises an internal pressure test subsystem and an external pull force test subsystem. The internal pressure test subsystem comprises an inflow branch, an outflow branch, a pressure stabilizing device and a pressure monitoring device. The inflow branch comprises a first joint and a pressurizing device in communication. The outflow branch comprises a second joint and a first stop valve in communication. The first joint and the second joint are used for one-to-one communication with two ends of the pull-off valve to be detected. The pressure stabilizing device is installed on a pipeline between the first joint and the pressurizing device. The pressure monitoring device is installed on the pipeline between the first joint and the pressurizing device. The external pull force test subsystem comprises a driving device and a pull force monitoring device. The driving device applies pull force to the pull-off valve to be detected. The pull force monitoring device is connected with the driving device. The monitoring data obtained by the application is more applicable to the general situation of the pull-off valve in use, the comprehensiveness of the detection data of the pull-off valve can be improved, and the safety hidden danger can be reduced.

The invention relates to a test platform and a test method for testing the bonding strength of a double-sided chip module, and belongs to the technical field of chip detection. According to the device, the substrate is fixed at the same time through the clamps on the two sides perpendicular to the thickness direction, the curing assemblies are matched with the chips on the substrate, each chip is matched with one curing assembly, pulling force is applied to the two sides through the traction pieces, the pulling force direction is perpendicular to the surfaces of the chips, and therefore the interface bonding strength between the double-sided chips and the substrate is accurately and reliably measured.

A strain relief device for at least one supply line. The strain relief device can be or is disposed on a line-guiding apparatus for guiding the at least one supply line and has at least one main body, which comprises at least one coupling means for the fastening of the at least one supply line to said coupling means and thus to the strain relief device in such a way that strain is relieved. At least one preferably flexible coupling element is provided, which can be disposed so as to peripherally surround the coupling means and the line to be fixed on the coupling means and which surrounds the line together with the coupling means in the form of a loop. There are fastening means on the main body for fastening the main body to the strain relief device in such a way that tensile force is absorbed. A guide element having a guide region for the coupling element is provided adjacent to the at least one coupling means. The guide region is designed to guide the coupling element as the coupling element is transferred from a position at a distance from the coupling means to the position of the coupling element in which the coupling element fastens the supply line to the coupling means in such a way that strain is relieved.