721 results about "Contact wire" patented technology

A semiconductor device includes a substrate that includes a first surface and a second surface, a first source / drain pattern disposed on the first surface of the substrate, a second source / drain pattern disposed on the first surface of the, a first source / drain contact disposed on the first source / drain pattern and connected to the first source / drain pattern, a second source / drain contact disposed on the second source / drain pattern and connected to the second source / drain pattern, a rear wiring line disposed on the second surface of the substrate, a first contact connection via that connects the rear wiring line with the first source / drain contact, a second contact connection via that connects the rear wiring line with the second source / drain contact and is spaced apart from the first contact connection via, and an air gap structure disposed between the first contact connection via and the second contact connection via.

The invention relates to the technical field of measurement and automation, in particular to a non-contact wire diameter identification method and system, and the method comprises the steps: enabling a CCD camera and a laser range finder to aim at a remote cable identification target, and obtaining a cable image and the spatial position information of the cable image; inputting the cable image into a trained cable type identification model for feature extraction and classification processing to obtain a cable type, and determining an edge detection preset parameter corresponding to the cable type; edge extraction and contour segmentation are carried out based on the cable image and edge detection preset parameters, and the pixel length of the cable diameter is obtained according to geometric characteristic estimation of the segmented contour; based on the spatial position information of the cable and the pixel length of the diameter of the cable, performing scale conversion from an image to a physical world to obtain the actual length of the diameter of the cable; and based on the actual length of the cable diameter and the cable type, searching a matching item in a preset cable model database to obtain a cable model identification result.

The utility model discloses an automatic ice melting robot for an electrified railway contact network based on electromagnetic eddy current, which comprises a line climbing motion module, a turbine connecting shaft, two upper mechanical arms, a mechanical arm connecting shaft, two lower mechanical arms and an electromagnetic eddy current deicing module, and is characterized in that the line climbing motion module is used for carrying out line climbing motion along a bearing cable of the electrified railway contact network; the turbine connecting shaft, the two upper mechanical arms, the mechanical arm connecting shaft and the two lower mechanical arms are matched with one another and used for achieving angle-adjustable connection between the wire climbing movement module and the electromagnetic eddy current deicing module, and the electromagnetic eddy current deicing module is used for conducting deicing on a contact wire through electromagnetic eddy current heating. According to the utility model, safe and efficient automatic deicing of the electrified railway contact net is realized by adopting electromagnetic eddy current heating.

The application discloses a hanging rail type contact wire abrasion detection robot clamping and walking device, which realizes quick, automatic and reliable installation and locking of the detection robot on a narrow tunnel space and a Π-shaped busbar, and discards traditional heavy manual operation. The detection robot can automatically identify and smoothly pass through a pre-tightening bolt on the Π-shaped busbar, realizes uninterrupted continuous detection, overcomes the blockage of fixed obstacles, is not prone to be stuck, and improves the applicability of the overall device.

The invention discloses an intelligent detection method for a catenary concealment defect based on a multi-modal large model, and belongs to the technical field of intelligent inspection of a rail transit power supply system. According to the method, multi-source sensing data such as images, laser point clouds, infrared thermograms and structural sound waves are fused, and a unified multi-modal input data set is constructed. And the data quality and the fusion precision are improved through processing means such as space-time synchronization, registration and feature normalization. A multi-mode large model based on a Transform framework is adopted to carry out deep semantic modeling on fused data, feature information related to hidden defects is automatically extracted, and accurate recognition and positioning of early defects such as insulator fine cracks, early corrosion of hardware fittings, local corrosion of contact lines and micro displacement of a suspension system in an overhead line system are achieved. According to the method, the automatic and intelligent recognition capability of the catenary concealment defect can be remarkably improved, and the method is suitable for various scenes such as high-speed railways, urban rail transit and heavy haul railways.

The invention relates to the technical field of electric power drainage wire fixation, and discloses a drainage wire clamp and an installation tool, and the drainage wire clamp comprises a contact wire clamp, a guide connection part, and an insulation handle. The contact wire clamp is provided with a hooking part for hooking a high-voltage wire and a connecting part for connecting a conductive cable, the front end of the guide connecting part is connected with the connecting part, the rear end of the guide connecting part is connected with the conductive cable, the insulation handle is sleeved on the peripheries of the contact wire clamp and the guide connecting part, and the insulation handle is movably connected with the contact wire clamp. Therefore, the high-voltage wire can move along the axial direction of the contact wire clamp to abut against and be fixed. Under the condition that a high-voltage line outlet end needs to directly and uninterruptedly supply power to a high-voltage overhead line in special occasions, butt joint can be quickly and safely carried out.

The invention discloses a modeling method and system for a vehicle network field circuit coupling model under a contact line short-circuit working condition, and relates to the technical field of modeling, and the method comprises the following steps: constructing a short-circuit arc equivalent model under the contact line short-circuit working condition based on an isolation switch equivalent model, one end of the short-circuit arc equivalent model is connected with a contact line in sliding connection with a pantograph in the chain type lumped tau-shaped network model through a switch element, the other end of the short-circuit arc equivalent model is connected with a steel rail in the chain type lumped tau-shaped network model, and a vehicle network circuit model under the contact line short-circuit working condition is obtained; and taking the short-circuit arc current at any short-circuit phase obtained through simulation of the vehicle network circuit model as a current excitation source of the three-dimensional model, and obtaining a vehicle network field model under the contact line short-circuit working condition. The rise rate, peak value and attenuation process of the short-circuit current can be accurately simulated by adding the short-circuit arc, the arc voltage drop is reflected, and the authenticity and practicability of simulation are remarkably improved.

The invention relates to the technical field of electrical equipment, in particular to relay protection equipment with a wire harness carding structure, the equipment is mainly composed of a power distribution cabinet, a support frame and an adjusting mechanism, a cabinet door is arranged on the front side of the power distribution cabinet, the support frame is fixed on the inner wall of the power distribution cabinet, and the adjusting mechanism is matched with the support frame to realize a wire harness carding function. The adjusting mechanism comprises a first sliding frame, a rotating frame, a stress frame, an auxiliary assembly and the like. The first sliding frame slides in the first sliding groove of the supporting frame through the first sliding wheel, and the position can be adjusted. The rotating frame is slidably connected with the first sliding frame and can drive the auxiliary assembly to deflect. The auxiliary assembly can clamp and comb the wire harness, the first clamping plate is connected with the elastic assembly, the elastic assembly deforms when making contact with the wire harness, the contact area is increased, and the wire harness is prevented from being damaged. And the auxiliary assembly can also drive the second clamping plate to overturn to clamp the wire harness, so that the stability is enhanced. The equipment effectively solves the problem that the wiring harnesses of different types of relay protection equipment are bent during installation, and the operation stability of the equipment is improved.

The invention relates to the technical field of grinding, and particularly discloses a grinding system for an anti-electro-corrosion contact line, which is used for solving the problem of potential safety hazards caused by lack of real-time anomaly detection on the ground contact line in the prior art. Contact line polishing parameters are obtained through laser scanning, ultrasonic detection and a sensor, a standard contact line polishing image is obtained through a high-pixel camera to serve as a first polishing image, and a real-time contact line polishing image is obtained to serve as a second polishing image. First surface feature data is extracted according to the contact line surface data for data processing, and first polishing image features are obtained based on the first polishing image and second polishing image features are obtained based on the second polishing image; and according to the contact line polishing parameters, the first polishing image features and the second polishing image features, a layered abnormal response model is constructed to obtain abnormal polishing parameters, and polishing abnormality judgment is performed based on the abnormal polishing parameters, so that the contact line polishing quality is ensured, and the potential safety hazard of electric corrosion is prevented.

The invention provides a wire clamping type overhead line system elastic sling hydraulic driving device, which belongs to the technical field of overhead line system installation and comprises a supporting beam, a balance weight, a supporting frame and a balance weight adjusting assembly. According to the wire clamping type hydraulic driving device for the elastic sling of the contact network, under the condition of non-extreme strong wind weather, the balance weight can automatically adjust the carrier cable and the contact wire, so that the carrier cable and the contact wire are kept in a straightened state, the use cost input of a hydraulic driving structure is reduced, and the working efficiency is improved. And under the condition of extremely strong wind weather, the carrier cable and the contact line can be adjusted by means of the hydraulic cylinder, so that the carrier cable and the contact line are kept in a straightened state, and the working stability of the carrier cable and the contact line is effectively guaranteed. In addition, the control assembly can timely discover falling of the balance weight and send a warning signal to a worker, the reaction time is shortened, and the operation risk is reduced.

Control cables in a surgical instrument are kept parallel to the instrument's longitudinal axis to prevent transverse forces from the cables being sensed by a transverse force sensor in the instrument. A surgical instrument includes an elongated hollow shaft having a longitudinal center axis. Multiple cables extend within the shaft. A force sensor includes a beam disposed within the shaft and one or more strain gauges disposed on the beam. A proximal anchor is disposed within the shaft and in contact with a proximal end of the beam. A distal anchor is at the distal end of the shaft and in contact with a distal end of the beam. A cable guide is disposed within the shaft to constrain portions of the multiple cables disposed alongside the beam to movement parallel to the center axis, and so prevent force from the moving cables causing transverse force on the beam.

The invention discloses a conical sleeve type bolt-free current-carrying integral dropper and dropper wire clamp for a contact network, belongs to the technical field of flexible suspension equipment of a contact network system of an electrified railway, and aims to solve the problems that an existing integral dropper and dropper wire clamp for the contact network is complex in structure, bolts are loosened in actual operation, and the structural design needs to be improved. A conical sleeve type bolt-free current-carrying integral dropper and a dropper clamp are adopted, wherein the conical sleeve type bolt-free current-carrying integral dropper is of an up-and-down symmetrical connection structure formed by connecting a conical sleeve type bolt-free contact line dropper clamp and a spring wire protection hose connected to the conical sleeve type bolt-free carrier cable dropper clamp with a dropper wire. An elastic wire protection hose of the taper sleeve type bolt-free contact wire dropper clamp is connected with one end of a dropper wire, the taper sleeve type contact wire dropper clamp is connected with a contact wire in a clamping mode, an elastic wire protection hose of the taper sleeve type carrier cable dropper clamp is connected with the other end of the dropper wire, and a chuck mouth of the taper sleeve type carrier cable dropper clamp is connected with a carrier cable in a clamping mode. The whole structure is novel and practical, and is suitable for erecting and hanging the contact line on the electrified railway overhead line system.

The invention discloses a system for simulating the contact condition of a pantograph and a contact net after an earthquake. Relates to the field of railway bridge contact net anti-seismic tests. The system comprises a contact network simulation assembly, a train simulation assembly and a vibration table assembly. The contact network simulation assembly comprises a winch, a contact rope and two supporting columns. The two supporting columns are fixedly arranged at intervals, the winch is arranged at the top ends of the supporting columns and used for driving the contact rope to slide between the two supporting columns, the train simulation assembly comprises a train body, wheel parts arranged below the train body and a pantograph arranged on the train body, and the pantograph is in contact with the contact rope; the vibration table assembly comprises a table body and a vibrator used for vibrating the table body. The table body comprises a plurality of table tops which are independently arranged; the wheel part is placed on the table body; the vibration table assembly is adopted, each wheel below the train head is placed on the corresponding vibration table, and compared with the situation that a large vibration table top is placed below each wheel of a front bogie and a rear bogie, the real situation that the vibration states of all the wheels are different when a train runs on an unsmooth track after an earthquake is better met, the requirement for laboratory equipment conditions is lower, and the working efficiency is improved. Theoretically, test simulation is easier to realize, and the test result is more real, accurate and comprehensive.

The invention discloses a high-speed rail cable breaking-cleaning integrated deicing device used in the technical field of cable deicing. The high-speed rail cable breaking-cleaning integrated deicing device comprises an ice breaking module, a post-processing module and a guiding module. According to the technical scheme, a rotary support is installed on the upper portion of a pantograph head support of a high-speed train, a motor drives a rotary crushing head to rotate, and the rotary crushing head crushes and removes an ice layer on a cable; the deicing knife removes ice layers left at the bottom and the periphery of the cable; the heat generator generates high-temperature hot air which is sprayed out at a high speed through the nozzle, and residual ice particles and accumulated snow on the contact line are thoroughly removed. According to the high-speed rail cable breaking-cleaning integrated deicing device, through close cooperation of the functions of the ice breaking module, the post-processing module and the guiding module, deep cleaning of an ice layer attached to the cable can be achieved, the needed power consumption is low, the deicing efficiency is high, operation is safe and reliable, various complex weather conditions can be dealt with, and the high-speed rail cable breaking-cleaning integrated deicing device is suitable for popularization and application. And safe operation of the high-speed rail line is ensured.

The utility model discloses a printer which comprises a main machine, a conveying assembly and a printing assembly, the conveying assembly comprises a conveying rubber roller and a floating rubber roller, a conveying channel is formed between the conveying rubber roller and the floating rubber roller and extends in the first direction, the printing assembly comprises a printing rubber roller and a printing piece, and a printing channel is formed between the printing rubber roller and the printing piece. The printing channel extends in the second direction, the second direction and the first direction form an included angle, and the side face, close to the printing channel, of the printing piece faces the conveying channel and forms a printing face used for making contact with the thermal transfer ribbon, so that the contact area of the to-be-printed piece and the thermal transfer ribbon can be reduced, and friction between the to-be-printed piece and the thermal transfer ribbon is reduced. And the pressure of the thermal transfer ribbon which is not in contact with the wire marking tube on the printed piece can be reduced, so that the scratch of the printed piece on the thermal transfer ribbon can be reduced.

The utility model relates to the technical field of contact line processing, in particular to a drawing device for rigid contact line production, which comprises a bottom plate and a drawing mechanism, conveying mechanisms are arranged on the front side and the rear side of the bottom plate, the drawing mechanism is positioned in the middle of the bottom plate and comprises a drawing component and a lifting component, and the lifting component is used for adjusting the height of the drawing component. A drawing die is arranged between the two clamping plates, a lubricating assembly is arranged between the guide wheel and the drawing die, and a cleaning assembly is arranged on the rear side of the drawing die. The drawing die has the beneficial effects that residual sweeps may adhere to the inner wall of the drawing die, and the sweeps on the inner wall of the drawing die are cleaned and brushed in all directions through the cleaning assembly, so that the sweeps adhering to the inner wall of the drawing die are reduced, frequent replacement of the drawing die is reduced, the influence of the residual sweeps on the drawing of the contact line is prevented, and the drawing quality of the contact line is improved. And the drawing quality of the contact wire is improved.

The invention discloses a clamping and walking device of a rail-mounted contact line abrasion detection robot, which realizes rapid, automatic and reliable installation and locking of the detection robot in a narrow tunnel space and on an n-shaped busbar, and abandons traditional heavy manual operation. The detection robot can automatically recognize and stably cross the pre-tightening bolts on the n-shaped busbar, uninterrupted continuous detection is achieved, blocking of fixed obstacles is overcome, clamping stagnation is not prone to occurring, and the applicability of the whole device is improved.

The utility model relates to a high-speed railway power supply contact line laying device which comprises a movable base, a traction device and an erecting device. The movable base is provided with a supporting seat, walking wheels and a first driving part. The traction device comprises a mounting frame, a cable tray, a rotating shaft, a second driving part and a tension monitoring system; the erecting device is composed of an elevator and an outgoing line guiding device. According to the device, accurate regulation and control of tension in the stringing process are achieved through the control device, the stability and consistency of wire laying are ensured, meanwhile, the device has the multi-stage braking function and the visual monitoring capacity, the construction efficiency and safety are effectively improved, the device adapts to complex working condition requirements, and the quality and reliability of high-speed railway contact wire laying are remarkably optimized.

The utility model relates to an automobile combination switch, which comprises a switch body and a handle shell, a first mounting seat, a second mounting seat and a third mounting seat which are sequentially stacked are fixedly arranged in the handle shell, a first knob is rotatably arranged on the first mounting seat, a first elastic contact piece is fixedly arranged on the first knob, and a second elastic contact piece is fixedly arranged on the third mounting seat. A first contact circuit board abutting against the first elastic contact piece is fixedly arranged on the second installation base, a window located on one side of the first rotary knob is formed in the handle shell, a shifting part extending out of the window is formed on the first rotary knob, a second rotary knob is rotationally arranged on the second installation base, and a second elastic contact piece is fixedly arranged on the second rotary knob. A second contact circuit board abutting against the second elastic contact piece is fixedly arranged on the third installation base, the second rotary knob is sleeved with a rotary knob shell, and the first contact circuit board, the second contact circuit board and the third contact circuit board are integrated on a flexible circuit board. The automobile combination switch is high in integration level, easy to assemble and more compact in structure.

The invention discloses a scene-adaptive non-inductive access tail end drainage device which comprises a drainage module, the drainage module comprises a forceps body tube, a forceps head, a steering head, a transmission rod and a fastening block, a sliding groove is formed in the bottom of the head end of the forceps body tube, and the fastening block is embedded in the sliding groove and is in limiting sliding connection with the sliding groove; the transmission rod is arranged in the clamp body pipe, one end of the transmission rod is rotationally connected with the fastening block, and the other end of the transmission rod is provided with a transmission head used for being matched with a wrench. A nut is fixedly arranged in the plier body pipe, the transmission rod is in threaded connection with the nut, a first clamping part on the lower portion of the plier head and a second clamping part on the lower portion of the fastening block are detachably provided with contact wire clamp accessories, and the contact wire clamp accessories are cable electricity-taking contact wire clamps or busbar electricity-taking contact wire clamps. According to the invention, the universal non-power-cut quick access of the low-voltage overhead line and the low-voltage busbar can be met, and technical line reserve and scene adaptive support are provided for the subsequent construction of whole-system complete set non-inductive access equipment and the realization of the full coverage of an emergency guarantee supply scene.

The invention relates to a general type crimping terminal and an integral dropper of a contact network, which are applied to the integral dropper of the high-speed rail contact network, the crimping terminal is internally provided with a wire through hole through which a dropper wire used by the contact network can penetrate, one crimping terminal is connected with a first dropper wire clamp for clamping a carrier cable, and the other crimping terminal is connected with a second dropper wire clamp for clamping a carrier cable. The other crimping terminal is connected with a second dropper wire clamp for clamping the contact wire; and after the dropper wire passes through the wire through hole, the periphery of the crimping terminal is pressed to limit the displacement of the dropper wire. The crimping terminal of an integrally formed structure is adopted, the two ends of the dropper line are connected with the first current-carrying hole and the second current-carrying hole respectively after passing through the line passing holes, and compared with a connection mode that a current-carrying ring and the dropper line are separated in the prior art, the use reliability is improved; and a process of crimping the current-carrying ring is reduced, so that the integrity of the whole dropper can be ensured even if the crimping part is loosened.

The invention provides an automatic inspection device for an electrified railway contact network, and relates to the technical field of electrified railway inspection. Comprising a plurality of modular assemblies which are sequentially connected through connecting joints. The modular assembly includes: a frame; the moving assembly is used for being connected to a bearing cable of the electrified railway overhead line system and driving the modular assembly to advance on the bearing cable; a link assembly connecting the moving assembly to the frame and maintaining the moving assembly in contact with the carrier cable; and the balance assembly is mounted on the frame and used for keeping the modular assembly to move forwards on the bearing cable in a vertical posture. According to the invention, the insulation resistance and the leakage capacitance on any branch in the power supply system can be monitored. The automatic inspection device can advance on the bearing cable of the overhead line system for inspection, does not work on the contact line of the overhead line system, can carry out continuous measurement inspection on the electrified railway contact network, does not need to work when railway service is suspended, and has better railway overhead line system inspection convenience.

A clamping assembly 10 (e.g., jumper clamping assembly for a catenary system) comprises a clamp 100 and a strain relief guide 200 (e.g., sleeve). The clamp comprises first and second clamping members

The invention discloses a vibration deicing bow for a railway contact line. The vibration deicing bow comprises a bottom frame, a bow lifting device, a lower arm, an upper arm, a lower guide rod, an upper guide rod and a deicing bow head. The two ends of the deicing pantograph head are respectively provided with a pantograph angle part, and an ice vibration cam is arranged in the middle of the deicing pantograph head and provided with a power part. And ice scraping parts are respectively arranged at the front part and the rear part of the ice vibrating cam. The bow angle part is fixed on the bow head support, and a transition part is arranged at the inner end of the bow angle part. The power part provides a rotating power source for the ice vibrating cam, and the ice vibrating cam vibrates and impacts the contact network; the pantograph corner part and the transition section thereof are used for preventing the pantograph from hanging a net; and the ice scraping part is used for scraping long ice. A manual beating deicing technology can be replaced, an ice scraping and vibrating combined mode is adopted, ice coating on the contact net is removed, and the problems of arcing, current collection quality reduction and the like caused by poor contact of a bow net due to ice coating on the contact net at present are solved.

The utility model provides a polishing device for a contact line of a rigid contact net, which relates to the field of polishing of the contact line of the rigid contact net, and adopts the technical scheme that a polishing mechanism comprises a polishing motor and a polishing wheel, the polishing motor is arranged on a support plate I, and the support plate I is of an L-shaped structure; the first supporting plate is connected with a wing plate on the outer side of the moving seat through a first guide column, the first supporting plate and the first guide column can move relatively, a first follow-up spring is vertically arranged between the first supporting plate and the moving seat and arranged on the first guide column in a sleeving mode, and the upper end of the first guide column penetrates through the first supporting plate and is provided with a first limiting nut. A first straight hole groove is vertically formed in the corresponding position of the movable base, a motor shaft of the grinding motor extends into the first straight hole groove to be connected with a grinding wheel, and the axis of the grinding wheel is perpendicular to the advancing direction of the movable base. The polishing mechanism can float along with the change of the diameter of the contact line, and deformation caused by bearing of a large load is greatly avoided.

The utility model provides a dry-type cable T-junction box, which relates to the technical field of cable laying and connecting tools and comprises a box body bottom plate, a cable arrangement channel with a T-shaped structure is arranged above the box body bottom plate, a box body cover plate is arranged above the box body bottom plate, a sealing blocking strip is fixedly connected to the lower surface of the box body cover plate, and the sealing blocking strip is fixedly connected to the lower surface of the box body cover plate. The cable is clamped and fixed through cooperation of the sealing blocking strip and the cable arrangement channel, the tensile strength of the cable is effectively improved, the outer port of the cable arrangement channel and the edge of the cable are sealed through the upper sealing piece and the lower sealing piece, the sealing performance of the joint position is improved, external humid air is prevented from permeating into a metal wire in the cable to cause wire corrosion, and the service life of the cable is prolonged. The problems that a traditional cable T-connection wire lacks further fastening and sealing treatment, the T-connection position is low in tensile strength and prone to being snapped, and if the cable is located in a humid environment for a long time, moisture in air easily permeates an insulated rubber tape and makes contact with a metal wire in the cable, and the metal wire is corroded are solved.

The utility model relates to the technical field of new materials, and discloses a four-thread overlock machine for edge covering, which comprises a base, a machine body is fixedly arranged at the top of the base, and a workbench is fixedly arranged at the top of the base; the placing assembly is fixedly mounted on the back surface of the machine body; wherein the placing assembly comprises a mounting part and a placing part; the limiting assembly is fixedly mounted at the top of the machine body; wherein the limiting assembly comprises a limiting part and a wire clamping part; the installation part comprises a bottom plate, and a stop block is movably installed in the bottom plate. According to the utility model, through the arrangement of the limiting part, the thread end of the bobbin is led to the top of the machine body, the thread end is in contact with the top of the roller I, and the thread end continuously penetrates through the space between the limiting columns and then is in contact with the top of the roller II, so that the sewing thread is smoothly conveyed during conveying, and the effect of reducing the friction force between the sewing thread and the machine body is achieved.

The invention relates to the technical field of metal wire surface polishing, and provides metal wire surface treatment equipment and technology.The metal wire surface treatment equipment comprises a rack, a supporting ring and a polishing assembly, the supporting ring is arranged on the rack, the polishing assembly comprises a polishing abrasive belt and at least two supporting wheels, and the supporting wheels are rotationally arranged relative to the supporting ring; the polishing abrasive belts are arranged on the supporting wheels in a sleeving mode and make contact with the surface of the wire rod, the multiple polishing assemblies are arranged, and the multiple polishing abrasive belts in the multiple polishing assemblies are used for jointly wrapping the circumferential surface of the wire rod. By means of the technical scheme, the problem that in the prior art, large centrifugal force is generated due to the fact that a grinding element is adopted to rotate around a wire is solved.

The invention relates to a current collector (1) for a vehicle for supplying traction energy during travel from a contact wire (2) of an overhead line system installed along the route. It comprises at least one contact strip (3) extending parallel to a transverse direction (Y) of the vehicle and an erectable support frame (6) with a base joint for supporting the support frame (6) on the vehicle and with a joint arrangement (7) having at least one axis of rotation (D) extending parallel to the transverse direction (Y) of the vehicle for rotatably mounting the at least one contact strip (3) on the support frame (6). A lifting device serves to erect the support frame (6) and to generate a contact force (K) with which the at least one contact strip (3) can be pressed against the contact wire (2) to form an electrical sliding contact.According to the invention, the at least one axis of rotation (D) is arranged relative to the at least one contact strip (3) such that a tilting moment (MK) imposed on the at least one contact strip (3) by a frictional force (R) in the contact contact with the contact wire (2) can be compensated by an opposing counter-moment (MG) imposed on the at least one contact strip (3) by the contact force (K). This reduces the wear of the pantograph (1).