299 results about "Wheel and axle" patented technology

The invention discloses a pole climbing robot for a wind power tower pole, which is characterized in that the robot mainly comprises a robot body, 4-8 pole climbing mechanisms, a snake-shaped swing arm and a movable studio, wherein the snake-shaped swing arm and the movable studio are mounted on one side of the robot body; the robot body is an annular body formed by combining two semicircular cambered bodies or three equal cambered bodies; the diameter of an internal ring of the circular body is matched with the diameter of the wind power tower pole; the pole climbing mechanisms mainly comprise upper foot wheels, lower foot wheels, connecting arms, driving gears, thrust screw rods, nut gears and supporting seats; the upper foot wheels are connected with the lower foot wheels by the connecting arms through wheel shafts; the connecting arms are connected with the thrust screw rods by connecting pin shafts on the connecting arms, and form movable hinges; the 4-8 pole climbing mechanisms are distributed in the circular robot body uniformly; the snake-shaped swing arm consists of three swing arm parts, namely a large arm, a middle arm and a small arm; and the movable studio comprises two paralleled linear guide rails, a walk driving device and an operation room.

This invention discloses a wheel gauge adjustment device and a rail grinding trolley, specifically relating to the technical field of rail grinding equipment. The wheel gauge adjustment mechanism includes two independent pneumatic actuators, two telescopic displacement detection mechanisms, and an air source assembly. The two pneumatic actuators are respectively connected to two wheel assemblies, enabling independent driving of the wheels along the track width direction. The air source assembly provides power to the pneumatic actuators. The telescopic displacement detection mechanisms detect the wheel telescopic displacement in real time. The gauge detection mechanism is equipped with left and right displacement sensors, which respectively detect the distance between the left and right tracks and the corresponding sensors in real time. The controller calculates the real-time track gauge and wheel alignment deviation, controlling the two pneumatic actuators to operate synchronously or differentially, achieving automatic wheel alignment relative to the track centerline. This invention enables flexible gauge adjustment, ensuring stable wheel-axle gauge and precise alignment of the trolley and rail during operation, providing reliable structural support for efficient and high-quality rail grinding operations.

The present disclosure provides a quick disassembly structure and a wheelchair. A quick disassembly structure is applied to a wheelchair, the wheelchair comprising a frame tube and a wheel, the quick disassembly structure comprising: a wheel shaft, a first end of which is detachably connected with a hub of the wheel; an adjustable knob mechanism for locking or unlocking the wheel shaft; the adjustable knob mechanism comprising a knob screw and a knob handle assembly, a first end of the knob screw being threadedly connected with a second end of the wheel shaft, and a second end of the knob screw being detachably connected with the knob handle assembly. The quick disassembly structure of the present application can realize locking or unlocking of the wheel shaft through the adjustable knob mechanism, and the wheel shaft is connected with the hub of the wheel, thereby facilitating the user to install the wheel and also reducing the disassembly difficulty. Moreover, the whole quick disassembly structure has few parts, so that the cost is lower and the processing difficulty is reduced.

The utility model discloses a power assembly of electric baby carriage, including car body and wheel, the front steering assembly of car body is fixedly installed with wheel shaft on the steering seat, and the steering seat is close and is fixed with the adapter board, and the adapter board is perpendicular with wheel shaft, still include drive assembly, and drive assembly is detachably connected on the adapter board, the wheel of car body front end is movably set up on wheel shaft, and the wheel is fixedly connected with the power output end of drive assembly, when needing four drive requirement, only need to increase a station, is used for the output end of drive assembly along the hollow jacket on wheel shaft, and the positioning post of drive assembly is clamped into the positioning slot on adapter board, thereby the output end of drive assembly and wheel shaft, positioning post and positioning slot formed three point positioning, thereby realized the stable positioning of drive assembly, realized the quick assembly of drive assembly and the adjustment of two drive and four drive according to the demand flexibly.

The utility model belongs to the technical field of swing mechanism, especially a graphite crucible calcination tunnel kiln swing mechanism, including the ditch, swing car track, swing car, tunnel track, kiln car, the ditch sets up below ground, and the kiln car includes swing platform, and the bottom of swing platform is equipped with wheel shaft support, and the inner side of wheel shaft support is rotatably installed with driving axle, driven axle, and the both ends of driving axle, driven axle are fixedly connected with driving wheel, driven wheel respectively, and the top of swing platform is installed with transfer track, and the top of swing platform is also equipped with mounting groove, and the inner side of mounting groove is installed with kiln car push -and -pull mechanism, and the top of swing platform is equipped with first sliding slot, second sliding slot, the device can prevent the guide wheel of kiln car bottom from extruding transfer track due to inertia in the swing car operation process, causes its wear and tear and deformation damage to be unable to use the problem of, promotes the service life of transfer track, ensures swing operation process safety and stability.

This utility model discloses a novel anti-fouling and anti-water-accumulation brake disc, including a brake disc body and an anti-fouling and anti-water-accumulation component. The brake disc body includes a disc plate, a disc hub, and heat dissipation holes. The disc hub is fixed on the disc plate and securely mounted on the wheel axle with bolts. Several heat dissipation holes are provided on the disc plate. The anti-fouling and anti-water-accumulation component is arranged on the disc plate. The anti-fouling and anti-water-accumulation component includes anti-fouling and anti-water-accumulation grooves and guide grooves. Several anti-fouling and anti-water-accumulation grooves are symmetrically arranged in a ring array on both sides of the disc plate. Guide grooves are symmetrically arranged on both sides of the anti-fouling and anti-water-accumulation grooves. The anti-fouling and anti-water-accumulation grooves have an arc-shaped inclined structure. The inclined direction of the anti-fouling and anti-water-accumulation grooves is opposite to the forward rotation direction of the disc plate. This novel anti-fouling and anti-water-accumulation brake disc has a simple and reasonable structure and ingenious design. Through the centrifugal force generated by the rotation of the disc plate, the dirt and water adhering to the surface of the disc plate can be discharged along the anti-fouling and anti-water-accumulation grooves, ensuring the friction coefficient between the brake pads and the brake disc body and the braking efficiency, and has a good anti-fouling and anti-water-accumulation effect.

This invention discloses a wide-range power adjustment device for a power vehicle, comprising a frame, a foot crank, a flywheel shaft, a flywheel, a static friction plate, an annular airbag, an airbag baffle, a return spring, a cantilever beam force sensor, a Hall sensor, and a controller. The flywheel shaft with the foot crank is rotatably connected to the frame, and the flywheel is fixedly connected to the flywheel shaft. The static friction plate, the annular airbag, and the airbag baffle are respectively clearance-fitted to the flywheel shaft. The annular airbag is fixedly connected between the static friction plate and the airbag baffle. Each return spring is connected between the static friction plate and the airbag baffle. The fixed cantilever beam force sensor is connected to the top of the static friction plate via a top steel wire rope. The speed measuring probe of the Hall sensor faces the flywheel. The inflation mechanism, the deflation mechanism, the cantilever beam force sensor, and the Hall sensor are all connected to the controller. This invention adopts a friction-damped power adjustment method, without a transmission structure, achieving zero power output and increasing the maximum power range.

The utility model relates to ultra -low put front suspension technical field discloses a kind of ultra -low put front wheel frame device, including wheel side plate, the wheel side plate inner wall front and rear both ends are all equipped with rolling wheel axle, the wheel side plate outer wall left and right ends are all installed with wheel frame, the wheel side plate inner wall middle part and wheel frame front end left and right ends are all rotationally connected with sliding shaft sleeve, the wheel side plate place sliding shaft sleeve inner wall is installed with middle wheel axle. In the utility model, adopt three-hole triangle structure, form connecting rod lifting mechanism with wheel side plate, reach ultra -low put effect.When encountering uneven road surface, middle wheel fills up pit and hollow, ensure that vehicle passes stably. Rolling wheel is equipped with bearing, reduces friction;Middle wheel uses sliding shaft sleeve, cooperates with rolling wheel, effectively buffers bump, keeps vehicle body stable. Rolling wheel axle and middle wheel axle are installed through elastic pin, convenient for maintenance replacement, and excellent fixing performance. The design significantly improves vehicle passability, stability and maintenance convenience.

The application discloses a gear transmission structure capable of realizing large speed ratio and large torque in a small space, which comprises a box body, an end cover, a bearing seat, a driven bevel gear, a driving bevel gear, a planetary gear and a gear shaft. The bearing seat, the box body and an inner ring are sequentially connected, and the end cover is arranged at the end of the bearing seat and the inner ring away from the box body, so that a containing cavity is formed by the four parts. The driven bevel gear, the planetary gear and the gear shaft are all assembled in the containing cavity. The input end of the driving bevel gear is connected with a motor, and the output end of the driving bevel gear extends into the containing cavity and is engaged with the driven bevel gear. The driven bevel gear is engaged with a sun gear. The gear shaft is sleeved on the outside of the wheel shaft and is connected with a planetary carrier through a spline. The application utilizes the power split characteristics of the planetary mechanism and can meet the requirements of realizing large speed ratio and high torque in a small space. Meanwhile, the planetary carrier transmits the torque to the gear shaft, so that the axial size of the speed reducer can be effectively reduced.

This utility model relates to the field of vehicle safety and discloses a truck wheel axle auxiliary device, comprising: an external connecting rod installed between the tires; a threaded connection at the rear end of the external connecting rod to an inner bearing tire fixing plate, and a fixing screw installed inside the inner bearing tire fixing plate, the fixing screw being connected to the tire hub; and an easily adjustable expansion mechanism provided at the front end of the external connecting rod. The fixing screw is set at an equal angle on the inner bearing tire fixing plate. An inner connecting rod is connected to the internal slot of the external connecting rod. This truck wheel axle auxiliary device is used to replace a failed wheel axle, assisting towed vehicles and improving rescue efficiency. By linking the rear axle of the vehicle to the auxiliary device and installing the vehicle tires, it achieves a replacement assistance function, solving problems such as slow towing speed, road surface damage, and cornering displacement, increasing vehicle towing speed without causing road surface damage, and is applicable to various road surfaces.

The application discloses a pipeline transfer trolley, which comprises an axle and wheels at both ends of the axle, the axle is connected with the rear end of a push-pull frame, the front end of the push-pull frame is connected with one side of a pipe bracket, and the other side of the pipe bracket is provided with an upward opening groove in the transverse direction. The application has the advantages of: anti-falling optimization, eccentric welding of the push-pull frame and the arc-shaped pipe bracket form mechanical self-locking, the pipeline does not need to be additionally fixed, and the operation is simple and convenient; light weight, the self weight of the all-steel structure is less than 20 kg, one person can operate, and the difficulty of manual operation is reduced; strong passability, the solid tire can adapt to uneven road surfaces of a construction site and avoid being punctured; life improvement, the triangular reinforcing rib plate reduces the risk of fatigue fracture of the welding point; cost advantage, the material cost is less than 200 yuan, and the application is convenient to popularize; wide application range, applicable to DN65-DN300 pipelines.

The application relates to the technical field of racing chassis, and discloses a racing chassis device which comprises a chassis frame, a wheel train structure, a power transmission mechanism, a rotating speed monitoring mechanism and a wheel group switching mechanism. The chassis frame comprises a main support, an auxiliary support and a bottom plate. The main support and the auxiliary support are fixedly installed on the two sides of the bottom plate through bolts. The wheel train structure is symmetrically arranged on the two sides of the main support and the auxiliary support. The wheel train structure comprises a wheel hub, a wheel hub gear, an axle and a bearing seat. The wheel hub and the wheel hub gear are coaxially installed through the axle. The axle is installed on the bearing seat. The bearing seat is installed on the chassis frame. Two groups of wheel train structures are arranged on the two sides of the main support and the auxiliary support respectively. The two groups of wheel train structures are driven through the power transmission mechanism and are used for driving the movement of the racing chassis. The compact structure design and the high-strength material are adopted, so that the weight of the chassis is reduced, and the structural firmness and durability are guaranteed.

The utility model discloses an electric capstan with quick return self -stop function, including main body support, the left and right sides of main body support are equipped with motor assembly and speed reducer component respectively, be equipped with the transmission shaft of both's connection between motor assembly and speed reducer component, still be equipped with the drum of rotary connection with it on main body support, drum and speed reducer component engagement rotation, speed reducer component includes speed reducer casing, planetary gear assembly and internal toothed ring, and speed reducer casing is equipped with the clutching component of rotary connection with it, and internal toothed ring moves axially when clutching component rotates relative planetary gear assembly, speed reducer component still includes primary sun gear axle, and primary sun gear axle connects transmission shaft, and still be equipped with brake assembly in speed reducer component, the utility model discloses setting brake assembly in speed reducer component, and the braking process is smooth and good braking effect, and drum can brake fast and wear less when rotating, and through clutching component simultaneously, can conveniently switch the working gear position of speed reducer component.

The application provides a liquid-cooled wheel hub motor and belongs to the technical field of wheel hub motors. The wheel hub motor comprises a rim provided with a tire, an outer rotor fixed to the inner ring of the rim, hub end covers arranged on both sides of the rim, a motor cavity formed between the two hub end covers, an inner stator matched with the outer rotor arranged in the motor cavity, a wheel shaft capable of rotating arranged in the middle of the two hub end covers through bearings, a stator support disc fixed to the wheel shaft in the motor cavity, the inner stator comprising a stator core fixed to the outer edge of the stator support disc in the circumferential direction and a plurality of coil windings, a heat exchange cavity arranged in the inner part of the stator support disc, an inlet liquid flow channel and an outlet liquid flow channel communicated with the heat exchange cavity arranged at the end of the wheel shaft, a motor driver circuit board fixed to the stator support disc, a wire hole arranged at the end of the wheel shaft, and wires of the motor driver circuit board passing through the wire hole to the outside. The application has the advantages of high integration degree, good heat dissipation performance and the like.

This utility model discloses a silent, non-marking caster with good cushioning performance. It includes a bracket, which comprises a top plate and two arm plates fixed to the left and right ends of the lower side of the top plate. A mounting plate is rotatably mounted on the upper side of the top plate. A forward-extending arm plate is hinged to the lower end of each of the two arm plates. The rear ends of the two arm plates are fixedly connected by a connecting plate to form a bracket. A roller is rotatably mounted on the inner front end of the two arm plates via a wheel axle assembly. The roller includes a hub and a tire fitted onto the outer circumferential side of the hub. The tire is made of a flexible polymer material. A longitudinal shock-absorbing component is provided between the front end of the arm plate and the front end of the top plate. The caster exhibits excellent shock absorption and cushioning performance during load-bearing movement. During load-bearing movement, the elastic deformation of the tire can mitigate the instantaneous impact of the caster on the ground. The tire can also maintain friction while making flexible contact with the ground, avoiding hard scraping and tire wear. It also provides quiet operation and leaves no marks.

A drive device of a rigid-axle electrified vehicle includes an electromotive drive unit, a final speed reducer, an axle housing, and a transmission shaft. The electromotive drive unit is provided in a vehicle body. The final speed reducer divides dynamic power from the electromotive drive unit to right and left drive wheels. The axle housing couples the right and left drive wheels and houses the final speed reducer. The transmission shaft transmits dynamic power from the electromotive drive unit to the final speed reducer. The axle housing supports the vehicle body through a suspension spring. The transmission shaft is disposed in a vehicle-width direction. A first end of the transmission shaft in the vehicle-width direction is coupled to the electromotive drive unit through a first joint. A second end of the transmission shaft in the vehicle-width direction is coupled to the final speed reducer through a second joint.

The utility model relates to tire performance test equipment technical field provides a kind of tire vibration signal mechanical filtering device, comprising: mounting base, damping material and vibration sensor mounting seat, the mounting base is fixedly installed on the wheel axle of tire high-speed endurance testing machine, vibration sensor mounting seat bottom is set in the recess on mounting base, the connecting place of vibration sensor mounting seat and mounting base is filled with damping material, vibration sensor is provided on vibration sensor mounting seat, damping material split type is set, the utility model uses mechanical filtering device, filters out the testing machine vibration signal of high frequency, so that the vibration signal of more clear and understandable expression tire is shown vibration signal, compared with traditional digital filtering signal, can filter out interference signal from source, more effectively process high-frequency impact and other abnormal signals, and mounting base, damping material and vibration sensor mounting seat are convenient for installation connection between.

Various embodiments are directed to shuttle apparatuses for fall protection and methods of using the same. In various embodiments, the shuttle apparatus comprise a shuttle housing configured for dynamic engagement relative to a guide member; an adjustable guide wheel assembly configured for selective rotation between an unlocked position and a locked position, wherein rotating the adjustable guide wheel assembly between the locked position and the unlocked position comprises moving a button assembly relative to the shuttle housing along a button slot defined by the shuttle housing such that a wheel axle element is rotated between the locked and unlocked positions; wherein the adjustable guide wheel assembly being in the unlocked position corresponds to the shuttle apparatus being in an unlocked configuration defined by at least a portion of the shuttle apparatus being configured for selective movement between an installed configuration and a detached configuration relative to the guide member.

The utility model belongs to transportation equipment technical field discloses a kind of hoisting transport devices. Hoisting transport device includes support assembly and hoisting assembly, support assembly includes support frame, first connecting piece, wheel shaft and two running wheels, support frame is fixedly connected in wheel shaft, and first connecting piece is fixedly connected in support frame;Hoisting assembly includes hoisting lever, connecting sleeve, fastener, second connecting piece and hoisting piece, hoisting lever can be slidably connected in connecting sleeve, connecting sleeve is provided with fastening thread hole, fastener is arranged in fastening thread hole to fix hoisting lever and connecting sleeve, second connecting piece is fixedly connected in connecting sleeve, and second connecting piece is movably connected with first connecting piece to adjust the distance of hoisting lever to wheel shaft, hoisting piece is configured as connection hoist flange. Hoisting transport device provided by the utility model can quickly transport concrete foundation to specified position, reduce the labor intensity of construction personnel, and improve construction efficiency.

This utility model discloses an agricultural soil loosening device suitable for mountainous areas, specifically relating to the field of agricultural equipment technology. It includes a frame, with an axle at the rear of the frame. Both ends of the axle are rotatably connected to mountain wheels. A lifting assembly is installed between the axle and the frame, and a guide assembly is also installed between the axle and the frame. A locking assembly is installed on the lifting assembly. An axle is fixedly connected to the inner side of the frame, with a hub motor mounted on it. A brake for braking the hub motor is also installed on the axle, and multiple soil-breaking blades are mounted on the hub motor. A tail support is fixedly connected to the rear of the frame, with a plowing blade at the bottom and a battery at the top. A handrail is also fixedly connected to the top of the tail support. This utility model solves the technical problems of low soil loosening efficiency and poor mobility in current agricultural soil loosening equipment.

A tang on a spindle nut washer of a wheel end assembly facilitates retention and alignment of bearing and seal components within a wheel hub during installation and removal of the hub onto and / or from a wheel spindle. In one embodiment, the tang protrudes from an outer circumferential portion of the washer to interact with a circumferential slot in the wheel hub. The washer is installed within the hub at an offset orientation to position the tang within the slot, which assures axial retention of the washer within the hub. The washer can then engage an outboard wheel bearing cone to facilitate wheel hub installation on the spindle, and can also facilitate subsequent hub removal from the spindle. Upon completion of wheel end assembly, the washer thickness can also provide confirmation that wheel bearings and seal components are fully seated to recommended bearing preload and / or wheel end play limits.

The utility model relates to conveying equipment removes jacking positioning device. Including base, lifting support column and auxiliary support column, lifting support column is fixed in the base center place perpendicularly, including hydraulic jack and the first clamp of connecting in the hydraulic jack top, auxiliary support column symmetry sets up in the both ends of base, including telescopic link and the second clamp of connecting in telescopic link top, the support muscle board of multiple blocks is connected between telescopic link and base, telescopic link includes the outer sleeve, inner sleeve, spiral tension spring and center guide post that set in proper order, one end of spiral tension spring is fixed on center guide post, the other end is fixed in the upper portion of inner sleeve, center guide post and outer sleeve are fixed on base, when working, the first, second clamp is connected on the wheel axle of wheeled belt conveyor, after hydraulic jack contracts, spiral tension spring can lift base to be convenient for the disassembly of first, second clamp. Have the advantages such as simple structure, convenient operation, small and exquisite.

The utility model provides a kind of beam column handling device, including walking component, lower support component, upper support component and clamping component, the walking component includes wheel shaft and the wheel that is respectively rotationally connected in the both ends of the wheel shaft;The lower support component includes the lower support post that is vertically connected in the middle part of the wheel shaft;The upper support component includes the upper support post that is rotationally connected with the lower support post, and the upper end of the upper support post is vertically connected with handling rod, and the spacing between the front end of the handling rod and the upper support post is less than the spacing between the rear end of the handling rod and the upper support post;The clamping component includes cross bar and clamp that is respectively connected in the both ends of the cross bar, and the middle part of the cross bar is connected with the front end of the handling rod, and handle is provided in the rear end of the handling rod.The utility model can be used to lift horizontally placed beam column in factory area and move, and the lifted beam column can also be horizontally rotated to adjust orientation, so that the movement of beam column is more flexible and convenient.

The utility model relates to vehicle positioning technical field more specifically, relates to freight car depot shunting line locomotive vehicle positioning system. Including upper application system, vehicle control unit, line surveying and mapping module, ground positioning module, ground positioning module is composed of passive beacon along the line and is set up on the sleeper, ground positioning module with upper application system electric connection, and each passive beacon position writes in point coordinate ID number, vehicle positioning module, wheel speed detection module, wheel speed detection module installs in locomotive wheel axle and with vehicle control unit electric connection, car coupler working condition detection module, key point correction module. The system can communicate with ground platform in real time, obtain shunting hook plan and magnetic steel signal, push locomotive vehicle position coordinate data, and alarm information such as distance and safety distance of connecting and hanging. The utility model mainly applies to freight car depot shunting line locomotive vehicle positioning.

The utility model discloses a kind of cutter suction dredger, it is related to dredger technical field, wherein, cutter suction dredger includes hull and walking assembly, walking assembly includes walking frame, walking wheel and first driving part, the upper end of walking frame is rotatably connected to the bottom of hull, walking wheel includes wheel face, wheel shaft and multiple wheel pieces, the lower end of walking frame is rotatably connected to wheel shaft, each wheel piece is connected between wheel face and wheel shaft, and multiple wheel pieces are distributed along the circumferential direction of wheel shaft, and first driving part is used to drive wheel shaft relative walking frame rotation, to drive walking wheel rotation. Walking wheel is driven by first driving part and walks in water bottom, make walking wheel walk through walking frame to drive hull, to realize the continuous dredging operation of cutter suction dredger, effectively improve the working continuity and efficiency of cutter suction dredger. Multiple wheel pieces can agitate the sediment of water bottom, to prevent walking wheel from sinking into sludge or silt, ensure the smooth walking of cutter suction dredger.

The present application belongs to the technical field of labeling machine, and discloses a large bucket rotary labeling machine, which comprises a rack, a star wheel shaft rotatably connected to the rack, a limiting frame of arc structure fixedly installed on the rack, a driving roller rotatably arranged on the rack and extending into the limiting frame, and the outer wall of the driving roller is tangent to the inner wall of the limiting frame, two star wheel plates coaxially fixed on the outer side of the star wheel shaft from top to bottom, at least one pressing assembly for pushing the large bucket against the driving roller slidingly installed between the two star wheel plates, the pressing assembly comprising two pressing rollers symmetrically arranged and a sliding plate slidingly connected to one of the star wheel plates, and a second connecting rod rotatably connected between the two pressing rollers and the sliding plate. The present application is provided with a pressing assembly, through which the driving roller and the two pressing rollers can realize three-point positioning for large buckets of different sizes, and the rotation of the large bucket is realized by friction with the driving roller.

The application provides a pressure test device and test method for a folding baby carriage, and belongs to the technical field of baby carriage pressure test. The device comprises a workbench and a test mechanism. The test mechanism comprises a cylinder one fixed on the top of the workbench through a support. The application sets an arc-shaped part, a V-shaped part and a ball head. After the wheel is sleeved on the wheel shaft and positioned by a positioning assembly, the cylinder continuously presses the wheel surface of the wheel by the arc-shaped part to simulate the working condition of the wheel rolling on the hard protrusions on the road surface. Then, the ball head is downward by rotating the pressure head, and the wheel is rotated by 120 degrees. The ball head continuously presses the wheel to simulate the working condition of the wheel rolling on the stones. Then, the V-shaped part is downward, and the wheel is rotated by 120 degrees again. The V-shaped part continuously presses the wheel and temporarily stops to simulate the working condition of the wheel passing through the steps. Through the above design, the test of the wheel is more in line with the actual use environment, and the accuracy and reliability of the subsequent test results are ensured.

This invention relates to a guide straightening device for the outlet of a straightening machine, comprising a base housing and several guide straightening groups arranged in a front-to-back direction mounted on the base housing. Each guide straightening group includes two guide straightening units arranged opposite each other in a left-to-right direction, forming a guide straightening channel between the left and right guide straightening units. Each guide straightening unit includes a guide seat slidably connected to the base housing and a drive mechanism for driving the guide seat to move left and right. A guide wheel rotatably mounted on a guide wheel shaft is provided on the side of the guide seat facing the guide straightening channel. At least two straight sections are provided on the upper and lower ends of the guide wheel shaft. The bottom of the guide seat is provided with a support groove adapted to the lower end of the guide wheel shaft. The guide wheel shaft of this invention is installed via a notch and a support groove, facilitating the installation and removal of the guide wheel shaft, improving the efficiency of turning the guide wheel up and down, and utilizing the bottom of the notch and the sidewall of the support groove to form lateral support for the guide wheel shaft at two points, preventing the guide wheel shaft from tilting.