101 results about "Timing belt" patented technology

A tensioner for a belt has a fixed part provided with a pivot defining an axis (A), an eccentric arm rotatably mounted on the pivot about the axis (A), a pulley rotatable about an axis (B) defined by the arm and configured to cooperate with a timing belt, a first spring-damper assembly interposed between the arm and the fixed part, and a second spring-damper assembly configured to act between the arm and the fixed part from a predetermined angle of rotation of the arm with respect to the fixed part.

There is provided a driving device that provides an exercise load to the user to enable strength exercise, and exercise equipment including the same. A driving device according to one aspect of the present disclosure, which winds a portion of a cable part and provides the cable part with an exercise load against an external force applied to the cable part, may include: a stator disposed on the outer side of a motor shaft in a circumferential direction; a rotor positioned on the outer side of the stator in the circumferential direction to be rotated by the stator, and coupled to the motor shaft to rotate together with the motor shaft; and a rotor sprocket formed along the outer surface of the motor shaft at the end thereof to rotate together with the motor shaft; a bobbin installed to be rotatable around a bobbin shaft and configured to wind a portion of the cable part therearound; and a timing belt connecting the rotor sprocket and the bobbin to transmit the rotation force of the rotor sprocket to the bobbin.

A robotic load handling device for lifting and moving storage container stacked in stacks in a grid framework structure including a track system. A first timing pulley is disposed between a drive pulley and a second timing pulley of a lifting drive assembly which includes a belt tensioner wheel arranged between the first timing pulley and the second timing pulley, the belt tensioning wheel being arranged to urge the single timing belt against the first timing pulley such that the tension in a first section of the single timing belt between the first timing pulley and the drive pulley, moving in a direction towards the drive pulley, in use, is greater than the tension in a second section of the single timing belt between the first timing pulley and the second timing pulley when the single motor rotates in the first rotational direction.

A horizontal positioning system for a refuse loading system includes a base section, a distal section, one or more timing belt systems, one or more belt attachment devices, and one or more horizontal drive units. The base section is configured to couple to a frame of a refuse collection vehicle. The distal section is configured to couple between the base section and the refuse loading system and configured to translate with respect to the base section. At least a first one of the timing belt systems includes a pair of timing pulleys spaced horizontally from one another and each is rotatably coupled to the base section, and a timing belt is coupled around the pair of timing pulleys. At least one of the one or more belt attachment devices is configured to couple the base frame to the timing belt of at least one of the timing belt systems at a belt attachment location.

To provide a door device with a structure that can correct deviation of a timing belt with a pulley.SOLUTION: A door device according to the present invention includes a door device base for mounting the door device to a building, and a door attached via a connector to an endless timing belt, which is wound around a pair of pulleys provided on the door device base, in which one or both of the pulleys are rotatably mounted on a shaft fixed to the door device base via a pulley base assembly, and the pulley base assembly is configured to be able to change the angle between the rotation axis of the shaft and the extending direction of the timing belt.SELECTED DRAWING: Figure 4

The utility model relates to the technical field of breeding, and discloses a sterilization disinfectant spraying device for beef cattle disease control, which comprises a mounting shell and a water tank fixed on one side of the top of the mounting shell, and further comprises a spraying mechanism mounted on one side of the water tank, belt pulleys are rotationally connected to the two sides of an inner cavity of the mounting shell; through the cooperation of the servo motor, the swing mechanism and the fixing frame, the mounting frame can drive the spraying mechanism to swing, so that the spraying range of the device is widened, the convenience of the device is improved, the disinfection efficiency is also improved, and the practicability is high. Meanwhile, under the cooperation of a timing belt and a belt pulley, a stirring rod can mix a disinfectant and water, so that the disinfectant and the water are mixed more uniformly, the disinfection effect of the device is effectively improved, and the problems that when an existing device is used, the disinfection efficiency is poor, and the applicability is poor are solved.

This invention discloses an automatic bagging, sealing, and bag-changing device for a sweeper, comprising a garbage bin and a sealing mechanism. The garbage bin has a dispensing opening at its top. The sealing mechanism includes a drive assembly comprising a drive component and a timing belt mounted on the top of the garbage bin, the drive component and the timing belt being drivenly connected; a clamping assembly comprising a first clamp and a second clamp, the first clamp being fixed to the top of the garbage bin and located at one end of the timing belt, and the second clamp being located directly above the dispensing opening; and a compensation assembly comprising a compensation mounting plate, a guide post, and a first spring, the compensation mounting plate being connected to the timing belt, one end of the guide post being slidably connected to the compensation mounting plate, the other end of the guide post being fixedly connected to the second clamp, and the first spring being installed between the second clamp and the compensation mounting plate. The above configuration ensures stable clamping and proper closing of the garbage bag opening, preventing deformation and damage to the garbage bag, and improving the success rate of the garbage bag sealing operation.

To provide a tension adjustment mechanism which is excellent in a space saving property in a belt mechanism and applies a predetermined tension to a belt corresponding to variance in dimensions of components constituting the belt mechanism.SOLUTION: A tension adjustment mechanism 6 for fixing a tension of a toothed belt 4 bridging a space between a driving pulley 2 and a driven pulley 3 comprises: a driven pulley pedestal 61 which freely rotatably supports the driven pulley 3; mounting parts 62A and 62B which are provided in a device body 9 and guide the driven pulley pedestal 61 in a bridging direction X in a slidable manner; a coil spring 63 which energizes the driven pulley pedestal 61 in a direction away from the driving pulley 2; and a spring holder 64 which is fixed on an inner peripheral side of the toothed belt 4 and supports the coil spring 63. In the spring holder 64, there is formed a long hole 644 which is longer in the bridging direction X than a body side screw hole 91 which is formed in the device body 9. A fastening screw 65 is inserted through the long hole 644 and threaded into the body side screw hole 91, and the spring holder 64 is fixed to the device body 9.SELECTED DRAWING: Figure 2

A tandem bicycle device is provided. The device is comprised of a tandem bicycle device configured to minimize longitudinal separation between riders through a compact frame geometry incorporating a first seat and a second seat positioned in close proximity, as well as a closely spaced front crankset and rear crankset. The device has a second handlebar set connected to the frame via a pivot point allowing forward rotation of the handlebar set for active use by a second rider or retraction when not in use. The pedal system comprises two cranksets interconnected by a synchronization mechanism such as a dual-chain or timing belt system to ensure coordinated pedaling. The overall configuration reduces torsional frame flex and aerodynamic drag while improving shared rider control and engagement.

The storage crane described herein comprises: a drive motor driving a wheel; a motor encoder connected to the drive motor; an external encoder connected via a timing belt; and a control unit connected to the drive motor, the motor encoder, and the external encoder, wherein the control unit can be configured to: command the drive motor to move the position of the storage crane; identify a command position based on the first rotational speed information received from the motor encoder; identify a movement position based on the second rotational speed information received from the external encoder; and control the operation of the drive motor based on the deviation between the command position and the movement position.

The utility model relates to a speed change mechanism of a motorcycle. The speed change mechanism comprises a speed change box body, a driving shaft, a transmission shaft, an output shaft and a speed change gear box, the driving shaft is pivoted on the gearbox body, is sleeved with a centrifugal clutch, and is driven by a power source to pivot; the transmission shaft is arranged on the gearbox body in a pivoted mode and driven by the driving shaft to pivot through a timing belt set or a chain mechanism set. The output shaft is pivoted to the gearbox body and is driven by the transmission shaft through a reduction gear set to pivot, and finally a driving wheel is driven to rotate. The speed change gear box set is arranged on the speed change box body, and the gear ratio of the speed reduction gear set is converted through a shifting fork. Therefore, the speed change mechanism of the motorcycle can solve the problems that power of an existing stepless speed change mechanism is lost due to friction heating, and transmission of the power is delayed, so that the force transmission efficiency can be effectively improved.

The present invention provides a railway track inspection instrument and its use method. The instrument's gauge marking assembly includes a support plate and a connecting rod. The connecting rod moves in the same direction as the measuring wheel assembly. A rack is disposed on the lower side of the connecting rod. The support plate is fixed to the right end of the machine body. A half gear is disposed on the support plate and meshes with the rack. A coaxial upper full gear is fixed to one side of the half gear. Lower full gears are disposed on the support plates below the upper full gear. A timing belt is mounted on the outer sides of the upper full gear and the two lower full gears. A first through-hole is disposed in the timing belt between the two lower full gears. A spacer belt is fixed in the middle of the first through-hole. A spray head is disposed on the support plate above the first through-hole. A spacer plate is disposed between the spray head and the first through-hole. Spray holes are disposed on the spacer plate at positions corresponding to the first through-hole. The present invention uses only one color to determine whether the track gauge is increasing or decreasing, and the degree of increase or decrease, based on the marking.

This utility model discloses a feeding mechanism for a stamping press, including a base. The upper surface of the base has a mounting groove, and a synchronization component is installed inside the mounting groove. The upper surface of the base has symmetrical grooves, and symmetrical bearings are embedded in the inner walls of both grooves. Threaded rods are connected to the inner rings of both sets of bearings. The right ends of both threaded rods penetrate the grooves and extend into the mounting groove. Symmetrical movable seats are threadedly connected to the outer surfaces of both threaded rods. This device, through a synchronization component consisting of a rotary motor, gears, and a timing belt, enables the two threaded rods to rotate synchronously, thereby reducing the cost of the device. The two threaded rods allow the movable seats to move relative to each other. The movable seats, through a connecting plate, drive a positioning seat to move up and down, thus adjusting the height of the feeding component. This solves the problem of the aforementioned patent, which could only adapt to stamping presses of the same height, limiting its application range.

To accurately calculate load torque applied to an output shaft 20.SOLUTION: A power transmission mechanism 100 transmits power from an actuator 10 to an output shaft 20, and comprises: a drive pulley 110; a driven pulley 120; a timing belt 130 that is stretched between the drive pulley 110 and the driven pulley 120, and transmits power from the actuator 10 to the driven pulley 120; a biasing pulley 151 that is supported movably in a direction intersecting a driving direction of the timing belt 130, and biases the timing belt 130; an elastic spring 50 that elastically biases the biasing pulley 151 against the timing belt 130; an additional pulley 152 that is bridged across the timing belt 130 between the biasing pulley 151 and the drive pulley 110; and an additional pulley 153 that is bridged across the timing belt 130 between the biasing pulley 151 and the driven pulley 120.SELECTED DRAWING: Figure 2

The invention relates to a toothed belt pulley (1) for a toothed belt (2) with a predetermined pitch (4), wherein the toothed belt pulley has teeth (6) arranged along a circumferential direction (8) of the toothed belt pulley and grooves (10) arranged circumferentially between each adjacent tooth of the toothed belt pulley, and wherein the toothed belt pulley has a pitch (12) that is smaller than the pitch of the toothed belt. The invention further relates to a belt drive (70) with a toothed belt pulley and a toothed belt, and to a kit (84) for a belt drive with at least two toothed belt pulleys for the same toothed belt with a predetermined pitch. Finally, a bicycle (76) with a toothed belt pulley and / or a belt drive according to the invention is proposed. The means according to the invention make bicycles more reliable and safer.

The application discloses an engine fault diagnosis method based on a multilevel progressive detection principle, and has the characteristics that the method comprises the following steps: engine timing geometric deviation angle measurement, to complete mechanical layer detection; engine crankshaft and camshaft Hall pulse signal measurement and correction, to complete electrical signal angle layer detection; engine cold test speed-up working condition crankshaft angle domain / frequency domain comprehensive analysis, namely vibration acceleration layer detection; and artificial intelligence fault identification based on big data. The method provided by the application can progressively judge and identify faults through the mechanical layer, the electrical signal angle layer, timing belt tension or vibration frequency and vibration acceleration layer, so that common engine faults in the engine cold test and bench test process can be quickly identified. In the judgment of the vibration acceleration layer, the engine fault is quickly identified and pre-judged by combining the mechanical layer and the electrical signal angle layer and through an artificial intelligence fault judgment algorithm based on big data.

This invention relates to the field of tobacco equipment technology, and more particularly to a timing belt adjustment device for tobacco pack conveying, comprising: a flange sleeve, including an outer ring and an inner sleeve, both of which are axially connected. The outer ring is used to connect to a wall plate, and the inner sleeve is rotatably inserted within the inner circumference of the outer ring, with the inner circumference of the inner sleeve being eccentrically positioned to the outer circumference; and a wheel axle, rotatably inserted within the inner circumference of the inner sleeve, for connecting a timing pulley, which in turn connects to a timing belt. By designing the flange sleeve as a rotatably adjustable split-type eccentric sleeve structure, with the outer ring connected to the wall plate and fixed in place, rotating the eccentrically positioned inner sleeve allows for vertical adjustment of the wheel axle within the inner circumference of the inner sleeve. Simultaneously, this causes the vertical positions of the timing pulley and timing belt mounted on the wheel axle to change accordingly, thereby achieving vertical adjustment of the timing belt.

There is provided exercise equipment that provides an exercise load to the user to enable strength exercise. Exercise equipment according to one aspect of the present disclosure includes: a body part having an accommodation space formed therein and an upper surface formed in a plate shape; a cable part having one end coupled to the accommodation space and the other end exposed to the outside through an outlet of the body part, and configured to change in its length by external force; and a driving part coupled to one end of the cable part in the accommodation space and configured to provide the cable part with an exercise load to resist the external force, wherein the driving part includes a driving motor configured to generate rotational force around a motor shaft in the longitudinal direction, a bobbin installed to rotate around a bobbin shaft in the longitudinal direction and configured to wind one end of the cable part, and a timing belt configured to connect the driving motor and the bobbin, and rotate the bobbin using the rotational force of the driving motor.

Toothed belt lock (1) for power-transmitting connection of two toothed belt ends (2), comprising a base body (3), wherein the base body (3) has two separate belt receptacles (4) for the force-transmitting reception of an end section of a respective toothed belt end (2), wherein the belt receptacles (4) are each formed by a negative profile, which is designed as a negative of an end section of a respective toothed belt end (2) to be received, with a front (5) designed as a negative of a tooth profile of a toothed belt (19) and a back (6) that is flat in itself, designed as a negative of a flat back (6) of a toothed belt (19), such that the end section of the respective toothed belt end (2) can be received in the respective belt receptacle (4) in a form-fitting manner, wherein the belt receptacles (4) are oriented relative to each other such that the front faces (5) of the belt receptacles (4) are facing each other, wherein the base body (3) has two rounded deflection areas (7), each of which is connected to an end cross-section of one of the belt receptacles (4) at which a respective toothed belt end (2) exits the belt receptacle (4), wherein the deflection areas (7) are assigned to the rear sides (6) of the belt receptacles (4) facing away from each other, so that a deflection section of a respective toothed belt end (2), which is directly connected to the end section of the respective toothed belt end (2) received in the respective belt receptacle (4), can with its flat rear side (6) be placed against the respective deflection area (7) and can thus be deflected on the base body (3), characterized by the fact that the belt receptacles (4) are oriented parallel to each other and spaced apart from each other in the base body (3), wherein the base body (3) is formed of base body parts (9, 10) which can be connected to each other in a force-transmitting manner and which can be separated from each other without damage, wherein the base body (3) is divided along a division plane which is oriented parallel to the longitudinal axes of the belt receptacles (4) and perpendicular to the rear sides (6) of the belt receptacles (4).

The present invention relates, in a first aspect, to a belt drive comprising a first and second pulley with drive and driven gear rings and a toothed belt, wherein at least one pulley has guide projections for engaging in recesses in the toothed belt, and a plurality of recesses are provided in the root of the tooth of the tooth of the tooth, these recesses being formed by the guide projections of the pulley, and material being removed from the back of the toothed belt by the projections, where the material is extruded beyond the plane of the toothed belt. In a further aspect, a method for manufacturing a toothed belt according to the invention, with recesses at the tooth root and material being removed from the back of the toothed belt, is provided.Furthermore, the present invention relates to corresponding toothed belts themselves, a kit for a belt drive comprising the toothed belt according to the invention and at least one pulley with a toothed rim, wherein the pulley has guide projections for engaging in the recesses of the toothed belt. Finally, a vehicle, in particular a bicycle, is provided with a belt drive according to the invention.

This invention discloses a lock-up diagnostic method, apparatus, device, and storage medium. The method includes: acquiring crankshaft signals and camshaft signals; determining an initial crankshaft angle set corresponding to the camshaft based on the crankshaft signals and camshaft signals; determining a first crankshaft angle set corresponding to a first time period and a second crankshaft angle set corresponding to a second time period based on the initial crankshaft angle set; and determining a lock-up diagnostic result based on the first crankshaft angle set and the second crankshaft angle set. Using this method, without adding additional sensors or actuators, the fault can be accurately located to a lock-up function failure of the VVT ​​system by verifying the camshaft and crankshaft angles during startup and stable engine operation, eliminating the influence of other faults such as camshaft installation position and timing belt aging and slippage.

The utility model relates to the technical field of laminated tempered glass production, in particular to an autoclave cooling device for laminated tempered glass production, which comprises a mounting frame and an autoclave body mounted in the mounting frame, and further comprises a cooling box mounted in the mounting frame, the surface of the high-pressure kettle body is communicated with a water outlet pipe; the cooling liquid is dispersed through the cooperation of the coiled pipe and the heat dissipation mechanism, the contact time of air and the cooling liquid can be shortened, and therefore the heat dissipation efficiency of the cooling liquid is improved, meanwhile, the air blowing mechanism and the fixing shell can be matched with each other under the cooperation of the belt pulley and the timing belt, air blowing heat dissipation is conducted on the cooling liquid again, and the cooling efficiency is improved. And air is in direct contact with the cooling liquid, so that the cooling efficiency of the cooling liquid is further improved, the applicability of the device is effectively improved, and the problems that when an existing device is used, the cooling efficiency of the cooling liquid is poor, and the applicability is poor are solved.

The utility model provides a strong weather-proof shutter, which relates to the technical field of shutters and comprises an outer frame, a plurality of shutter blades are arranged in the outer frame, connecting rods are arranged on two sides of each shutter blade, a rhombus block is arranged on one side of each connecting rod, a mounting hole is arranged in the outer frame, a rotating shaft is arranged in the mounting hole, and the rotating shaft is arranged in the outer frame. A diamond hole is formed in one side of the rotating shaft, gears are arranged on the other side of the rotating shaft, the gears are installed in a meshed mode through a synchronous belt, and an adjusting assembly is arranged on one side of one gear. The device solves the problems that an existing louver is prone to deformation and needs to be replaced, an internal synchronous belt is inconvenient to adjust, the tension degree of the synchronous belt cannot be guaranteed, and the synchronous belt is loosened or slipped.

The utility model provides a bracket for overhauling a timing belt of an automobile gas distribution system, which relates to the technical field of automobile overhauling and comprises an annular frame body and an overhauling area. The overhauling area is a closed space formed by surrounding of the annular frame body and is used for dividing an overhauling area when the timing belt is overhauled; the annular frame body is detachably connected with an automobile gas distribution system; and a detector is installed on the annular frame body, a detection probe of the detector penetrates through the receding hole to enter the overhauling area, the problem that in the existing timing belt overhauling process, the overhauling area cannot be accurately divided and limited is solved, and the timing belt overhauling efficiency is improved.

The utility model provides a manual cable winding machine which comprises a driving device, a synchronizing device and a winding device which are arranged in sequence, the synchronizing device comprises a transmission wheel set and a synchronous belt, the transmission wheel set is composed of a first transmission wheel and a second transmission wheel, the first transmission wheel is fixedly connected with the driving device, and the second transmission wheel is fixedly connected with the winding device. The axis of the first transmission wheel and the axis of the second transmission wheel are located on the same straight line, the synchronous belt is arranged on the transmission wheel set and is in transmission connection with the transmission wheel set, through the design of the synchronous belt and the transmission wheel set, the manual cable winding machine achieves accurate synchronization of the driving source and the winding device, it is ensured that power provided by the driving source is stably transmitted to the winding device, and the winding efficiency is improved. By means of the design, the operation efficiency and the cable winding quality are improved, the defects of a traditional manual cable winding machine in the aspect of synchronism are overcome, the reliability and the production capacity of equipment are integrally improved, and the manual cable winding machine is an effective improvement on the prior art.

This invention provides a photovoltaic panel module cleaning device, including a cleaning system and a drive assembly. The cleaning system includes a traveling beam and a scraper assembly mounted on the traveling beam. The drive assembly includes a mounting plate, a drive device, and a sprocket assembly. The sprocket assembly includes a transmission belt, a driving sprocket, and a driven sprocket. The transmission belt surrounds the driving sprocket and the driven sprocket, and the driving sprocket and the driven sprocket are driven by the transmission belt. The transmission belt is a track or a timing belt, and it is used to contact the photovoltaic panel module. The drive device is fixed to the mounting plate, connected to the driving sprocket, and used to drive the driving sprocket to rotate. The driven sprocket is rotatably connected to the mounting plate. This invention utilizes a track or timing belt as the traveling component of the photovoltaic panel module cleaning device, thereby greatly improving the traveling ability of the photovoltaic panel module cleaning device.

This utility model discloses a back pressure device for an all-electric bending machine, including a frame, a slider, a transmission assembly, and an anti-drop mechanism. The slider is equipped with a downward pressing blade. The transmission assembly is mounted on the frame. The anti-drop mechanism includes a vertically extending connecting rod, a connecting block mounted on the frame, and a pre-tensioning spring. The connecting rod is fixed to the slider and slidably mounted on the connecting block. The pre-tensioning spring is sleeved on the connecting rod and provides elastic force for the slider to move upward. When the transmission assembly is working normally, the slider moves downward under the drive of the transmission assembly. At this time, the pre-tensioning spring is compressed and stores elastic potential energy. Once the transmission assembly malfunctions, such as a broken timing belt, the force exerted by the transmission assembly on the slider disappears. The pre-tensioning spring instantly releases the stored elastic potential energy, providing an upward elastic force to the slider, causing the slider to move upward rapidly. This effectively prevents the slider and its downward pressing blade from suddenly falling downward due to gravity, which would cause serious damage to the lower die and the downward pressing blade.

The utility model discloses a timing toothed belt guide wheel, including a bearing, a gear, a retaining ring, a bolt and a bushing; the bearing is arranged in the annular inner cavity of the gear, the bushing is arranged on the rear side of the bearing, and a rigid ring and a rubber sealing ring are arranged on the bearing; the bolt is arranged on the front side of the bearing, the tail end of the bolt passes through the bearing and the bushing, and an O-ring is arranged at the connection between the rear end of the bushing and the bolt, and the O-ring is sleeved on the bolt; the retaining ring is arranged on the gear on the rear side of the bearing, and the inner ring of the retaining ring is sleeved on the bushing. A double sealing structure is arranged on the bearing, so that it can prevent external impurities from entering the inside of the bearing through the rigid ring and the rubber sealing ring, thereby extending the service life of the product; the annular array tooth groove of the gear cooperates with the timing belt to ensure the stable operation of the timing belt, and provide precise transmission, improve transmission efficiency and transmission accuracy, reduce operating noise, and thus achieve normal operation of the engine.

The utility model relates to a linkage hidden sliding rail mechanism. The sliding rail mechanism comprises a middle rail, an outer rail and a synchronous belt, wherein the outer rail can slide relative to the middle rail in the rail range of the middle rail; a pulley assembly is fixed at each of the two ends of the middle rail; the outer rail comprises an upper outer rail and a lower outer rail; the synchronous belt is flexible and comprises a first synchronous belt and a second synchronous belt; the first end of the upper outer rail is connected to the first end of the lower outer rail through a first synchronous belt, and a belt body of the first synchronous belt is wound around a pulley assembly installed at the first end of the middle rail. The second end of the upper outer rail is connected to the second end of the lower outer rail through a second synchronous belt, and a belt body of the second synchronous belt is wound around a pulley assembly installed at the second end of the middle rail. According to the sliding rail mechanism, the upper outer rail and the lower outer rail form a linked sliding system, so that the whole sliding rail mechanism slides more stably and smoothly, and the installation space is small.

Use of a toothed belt (16) for an electric power steering system, wherein the toothed belt (16) comprises: a backing (24) made of an elastic core; several oblique teeth (20) arranged at a predetermined pitch in a longitudinal direction of the belt on an inner circumferential surface of the backing (24); and a cord (22) spirally embedded in the backing (24) in the longitudinal direction of the belt and consisting of fibers, wherein the oblique teeth (20) comprise a toothed cloth (26) arranged on an inner circumferential side thereof, the direction of the flank lines of the oblique teeth (20) and the lateral direction of the belt form an angle of 8 degrees or more and 16 degrees or less, the fibers constituting the cord (22) form a single thread, and the direction of rotation of the thread is inclined in a direction opposite to the direction of the flank lines of the oblique teeth (20) relative to the lateral direction of the belt.a winding direction of the cord (22) is inclined in the same direction as the direction of the flank lines of the oblique teeth (20) relative to the width direction of the belt, the toothed cloth (26) is a twill cloth and a twill direction of the toothed cloth (26) is inclined in the opposite direction to the direction of the flank lines of the oblique teeth (20) relative to the width direction of the belt.