4930 results about "Ratchet" patented technology

A mount comprise multiple mounting locations for mounting various accessories in relation to a mounting surface. The mount comprises a proximate mounting location configured to be mounted in relation to the mounting surface, and multiple distal mounting locations for mounting accessories in a spaced relation to the proximate mounting location. An accessory may be mounted at the proximate mounting location, while at the same time, mounting the mount to the mounting surface. The distal mounting location may be spaced apart and elevated in relation to the proximate mounting location so that a user may reach between and below the distal mounting locations. The mount may also be configured to be mounted in a cantilevered fashion in relation to the mounting surface. The mount may be provided with an interlocking feature or surface, which may be in the form of a ratcheting or indexable feature, which may permit angular adjustment of the mount at discrete positions. The mount may support a tether, which may be stowed in closed out of the way in proximity to the mount, and which may be deployed to hold an accessory in relation to an accessory mount.

The invention provides steel structure profile cutting equipment. The steel structure profile cutting equipment comprises a conveying assembly, a cutting assembly, a discharging assembly, a flow dividing driving assembly and a positioning assembly. The conveying assembly conveys profiles through a bearing roller A, the discharging assembly adopts a liftable bearing roller B to achieve automatic discharging, the flow dividing driving assembly independently drives the conveying action and the discharging action through a ratchet mechanism, and interference is avoided. The positioning assembly comprises a width fixing mechanism, a thickness adapting mechanism and a guiding and clamping mechanism, the clamping position can be adjusted in a self-adaptive mode, and it is ensured that the profiles are guided stably in the conveying process and fixed firmly in the cutting process. The cutting assembly adopts a hydraulic drive disc saw, and precise cutting is achieved. The equipment has the advantages of high-precision positioning, automatic adjustment, efficient continuous operation and the like, is suitable for fixed-length cutting of heavy profiles such as large steel ingots and steel columns, and effectively improves the machining efficiency and the cutting quality.

A powered ratchet tool includes a housing and a motor disposed within the housing. The motor has an output shaft rotatable about a first axis. The powered ratchet tool further includes a ratchet mechanism supported by the housing and operably coupled to the output shaft to be driven by the motor. The ratchet mechanism has a crankshaft assembly defining a variable crank radius configured to change an extent of each rotational stroke of the ratchet mechanism. Moreover, the powered ratchet tool includes an output drive operably coupled to the ratchet mechanism to be rotated about a second axis perpendicular to the first axis.

A caravan lock with anti-motor stalling linkage structure is equipped with a toothed clutch mechanism or a ratchet clutch mechanism. The toothed clutch mechanism is featured by a rotary sliding tooth disc and an inner tooth disc, the drive shaft of the rotary shaft motor is connected to the inner tooth disc of the rotary sliding tooth disc, and the surface of the inner tooth disc has evenly spaced holes allowing for elastic deformation. The outer diameter of the internal gear disc features a braking head wedged into the internal tooth grooves evenly spaced along the inner diameter of the rotary sliding tooth disc; while the end of the linkage is pivotally attached to the first pin located at the top of the rotary sliding tooth disc, the second pin at the top of the rotary sliding gear disk is inserted into the sliding hole of the small locking tongue.

The invention discloses a reaction kettle device for synthesis of an iron phosphate material, and particularly relates to the technical field of synthesis of battery materials, and the device comprises a kettle body, a driving motor, a transmission disc and a turbo-type paddle. A sealing cover is arranged at the top of the kettle body, a driving motor is connected with a rotating shaft, an anchor blade is arranged below the rotating shaft, and the bottom realizes turbine blade lifting and sleeve guide limiting through transmission of a piston cavity and compressed gas; and a ratchet wheel on the outer wall of the rotating shaft is meshed with a pawl in the transmission disc in a one-way mode, and intermittent wall scraping is achieved. According to the device, dead angles are broken through synergistic stirring of the double blades, the mixing uniformity and the reaction rate are improved, materials adhering to the wall are efficiently removed through intermittent wall scraping, the stable reaction environment is guaranteed through multiple sealing, the structure is flexible to adjust, maintenance is convenient and fast, efficient and high-quality synthesis of the iron phosphate material can be achieved, and the device is suitable for industrial large-scale production.

The invention provides a tool applied to the field of petroleum drilling, and particularly relates to an electrically-controlled reducing cutter, which has the technical scheme that the extension and retraction of the cutter are accurately controlled by a control base driving motor and an electromagnet, wherein the control base driving motor comprises an MCU (Microprogrammed Control Unit) and a wireless communication module; the control base can receive a ground instruction and transmit an underground working state signal back in real time; meanwhile, the ratchet mechanism is matched with the electromagnet to achieve extending and retracting of the cutter position, and the pawl is always in close contact with the ratchet wheel under the action of the spring. And the lower shell is in threaded connection with the guide shoe. The cutting knife is driven to rotate through the transmission shaft, the cutting knife is controlled to stretch out and retract through the intelligent electric control system, continuous cutting of casing pipes with different pipe diameters can be achieved, the tripping frequency is reduced, and the casing pipe cutting efficiency in the well abandoning operation process is greatly improved.

A door latch device includes: an open link including a lever main body, an inertia lever part, and a release energizing member configured to energize the inertia lever part to be maintained at an operating position with respect to the lever main body, an operation force of the door handle being not transmitted to the ratchet lever even in a state in which the lever main body is disposed at an unlocked position, in a case where the inertia lever part is disposed at a non-operating position against energizing force of the release energizing member; a ratchet lever; and a restriction mechanism disposed between the lever main body and the inertia lever part, the restriction mechanism being configured to restrict returning movement to the operating position in a case where the inertia lever part moves to the non-operating position.

The utility model provides a rotary hot-blast stove with an adjustable air outlet angle, which relates to the technical field of rotary hot-blast stoves and comprises a hot-blast stove body, an adjusting mechanism is arranged at the top of the hot-blast stove body and comprises a fixing pipe, a sleeve block is sleeved on the outer surface of the fixing pipe and is fixedly connected with the fixing pipe, and the air outlet angle of the hot-blast stove is adjustable. A rotating pipe is connected into the sleeve block in a sleeved mode, the rotating pipe is rotationally connected with the sleeve block, and a ratchet wheel is arranged in the sleeve block. According to the hot-blast stove, by arranging the adjusting mechanism, the blowing angle of the hot-blast stove can be adjusted, so that the blowing angle cannot be blocked by part of objects in actual use, it is guaranteed that hot air can be conveyed to the maximum extent, meanwhile, the air outlet angle of the rotating pipe can be adjusted, and the installation limitation of the hot-blast stove is smaller; and the ratchet wheel and the pawl are arranged, and the pawl can limit the ratchet wheel under the action of the first spring.

The utility model relates to the technical field of housing construction engineering, and discloses a housing construction engineering positioning and measuring device which comprises a supporting table, a supporting rod is movably connected in the supporting table in a penetrating mode, a measuring instrument is fixedly connected to the upper end of the supporting rod, and a supporting mechanism is arranged on the lower surface of the supporting table. A rack is fixedly connected to the left side surface of the supporting rod, and an adjusting mechanism is arranged on the upper surface of the supporting table and located on the left side of the supporting rod. According to the utility model, in the aspect of height adjustment, through the linkage design of the supporting rod and the rack and the combination of a mechanical locking mechanism of the gear, the ratchet wheel and the pawl, stepless precise adjustment of the measuring instrument is realized, and the motor fault risk and power consumption are avoided; in addition, the rotating rod can be locked through the positioning bolt after adjustment is completed, accidental displacement of the measuring instrument is prevented, and the reliability of the device is further improved. According to the design, through a pure mechanical structure, the height adjusting process is simplified, the maintenance cost is reduced, and the device is particularly suitable for engineering scenes in a power-free environment.

The invention belongs to the technical field of tensile experiment devices, and particularly relates to a metal rod tensile experiment device which comprises a rack, a supporting table and a tensile assembly, the supporting table and the tensile assembly are installed on the rack, and a fixing assembly is arranged on the surface of the supporting table. By arranging the stretching assembly, when the sliding block ascends, a nylon rope can pull a piston ring to extrude air in a second empty bin to enter a first empty bin through a groove, so that a supporting rod is pushed to slide upwards, and an upward thrust is applied to the sliding block; according to the high-precision lead screw, the situation that the precision of the high-precision lead screw is reduced due to the fact that a threaded groove of the high-precision lead screw is damaged by downward force applied to the surface of the sliding block through a cross beam by a metal rod can be effectively prevented; and the connecting plate is lifted upwards, the connecting rod is pushed to be jacked upwards, and limiting on the groove is relieved, so that the high-precision lead screw is prevented from continuously driving the sliding block to slide downwards.

The invention discloses a movable power generation type multi-section hinge vacuum cable-free mooring device which comprises a movable module, a base, a mechanical arm set, a vacuum adsorption assembly, a hydraulic power generation device and a sliding power generation device. An infrared sensing device is arranged on the base; the vacuum adsorption assembly comprises a vacuum chuck and a vacuum pump, the vacuum pump comprises a motor, a pump shell and a sealing cover, and two rotating pieces with opposite magnetism are embedded in the middle of a driving shaft of the motor; the sliding power generation device comprises a shell, a sliding block, a transmission shaft, a spring and a chain. The sliding block slides in the shell, and a spring is arranged between the sliding block and the shell; the top of the slide block is provided with a first toothed belt and the bottom is provided with a second toothed belt; a first ratchet, a first gear, a second ratchet, a second gear and a generator are arranged on the transmission shaft; a first stop assembly clamped into the first ratchet wheel is arranged on one side of the first gear, and a second stop assembly clamped into the second ratchet wheel is arranged on one side of the second gear. According to the invention, traditional mooring with cables is replaced by vacuum chuck adsorption, so that the collision risk is reduced and the cable breakage is avoided.

The invention relates to a shoe material cutting machine with regular notches and a cutting method thereof, and relates to the technical field of cutting equipment.The shoe material cutting machine comprises a shoe material conveying device, a cutting movement device, a cutting transverse moving device, a cutting lifting device, a cutting vibration device, a cutting rotating device and a vibration reinforcing device; the cutting lifting device is installed on the cutting transverse moving device in a lifting mode, the cutting vibration device is installed on the cutting lifting device and provided with a cutting knife, the vibration strengthening device comprises a vibration strengthening motor, an upper vibration ratchet wheel, a lower vibration ratchet wheel and a reset spring, and the cutting knife is installed on the lower side of the lower vibration ratchet wheel. The lower side of the reset spring is pressed on the cutting vibration device, the vibration lower ratchet wheel is pressed on the upper side of the reset spring, the vibration reinforcing motor is installed on the cutting vibration device, the vibration upper ratchet wheel is installed at the output end of the vibration reinforcing motor, and the upper side of the vibration lower ratchet wheel is matched with the lower side of the vibration upper ratchet wheel, so that a cut is regular.

A hybrid system for use with utility vehicles includes an electric motor including an output shaft and a conductor configured to alternatively receive power from or send power to an electrical power source. The hybrid system includes an internal combustion engine, a first pulley connected to and rotated by the internal combustion engine, and a clutch mechanism. The clutch mechanism includes a ratchet connected to the output shaft of the electric motor to rotate at a first rotational speed, a pawl carrier driven by the internal combustion engine to rotate at a second rotational speed, and one or pawls coupled to and configured to rotate with the pawl carrier. The one or more pawls are configured to be disengaged from the ratchet when the first and second rotational speeds differ and engaged with the ratchet when the first and second rotational speeds are equal.

A pool cycling valve with a valve body, a ratchet assembly, and a bottom plate. The valve body has an inlet port and a plurality of outlet ports. The ratchet assembly is rotatably coupled to the valve body and has a ratchet arm extending away from the ratchet assembly. When in a closed position, the ratchet assembly is configured to interfere with a stream of water. When in a open position, the ratchet assembly is rotated from the closed position by a predetermined angle. The bottom plate has an outlet port aperture aligned with one of the outlet ports and a ratchet tooth operably aligned with the ratchet arm. When the ratchet assembly rotates from the open position to the closed position, the ratchet assembly aligns the outlet port aperture with a different outlet port.

The invention discloses a multi-layer insulation space power equipment pile head warning lamp capable of being installed without power outage and an installation method, and aims to solve the problems that an existing insulation protective cover is fast in aging, poor in insulation, not firm in fixation and incapable of being installed without power outage, and the multi-layer insulation space power equipment pile head warning lamp comprises a cover body, a left sliding block, a right sliding block and two sets of turnover type locking mechanisms. According to the cover body, an inner layer plate, an outer layer plate and a connecting plate form a double-layer structure, a left sliding way and a right sliding way are formed, a sliding block adopts a double-layer insulation design and is matched with a one-way ratchet structure to achieve self-locking, two sets of overturning type locking mechanisms complete mechanical locking of a notch, a pressing rod is driven to operate through an insulating rod during installation, power failure is not needed, and installation is convenient. Fixing is completed through the three steps of positioning, locking and sliding block closing, the protective cover is arranged in a suspended mode, the insulation distance is increased, insulation is stable, wind resistance is high, aging is slow, warning can be achieved, and the protective cover is suitable for protection of various power equipment heads and excellent in practicability.

A hub is provided for a human-powered vehicle. The hub includes a hub axle, a first rotating body, a second rotating body, a first ratchet member, a second ratchet member and a slider. The first rotating body and the second rotating body are rotatably mounted on the hub axle. The first ratchet member rotates with the first rotating body. The second ratchet member rotates with the second rotating body. The slider rotates with the first rotating body and slide with respect to the second rotating body in a circumferential direction. The slider has a first contact surface in sliding contact with an axially facing surface of the second ratchet member. The slider has a second contact surface in sliding contact with a radially facing surface of the second ratchet member.

The utility model discloses an automobile fuel tank cap with a 360-degree multi-sound torque structure, which comprises an upper cap and a lower cap, an inner fluted disc is arranged on the inner side of the upper cap, a plurality of ratchets meshed with the inner fluted disc are arranged on the lower cap, and the ratchets are arranged at the end of the lower cap in an upward protruding mode. The inner teeth and the ratchets which form the inner fluted disc are respectively provided with a bevel edge and a straight edge. According to the fuel tank cap, the simple structure that the ratchets are matched with the inner fluted disc is adopted to remind an operator that the fuel tank cap is screwed tightly, a plurality of continuous sounds are made when the rotating torque reaches a certain degree to remind a user that the fuel tank cap assembly is installed in place when screwed tightly, the structure is simple, the number of components is small, and assembling is more convenient.

A lacing device, including a main body, a winding wheel, an upper cover, and a ratchet mechanism. The winding wheel is rotatably arranged in the main body; the upper cover and the winding wheel can be connected or separated; the upper cover includes a cover body and a side wall arranged around the circumference of the cover body; there is a first meshing surface on an inner side surface of the side wall; two or more slide channels are formed in an upper end surface of the main body; the ratchet mechanism includes two or more sliding blocks sliding along the slide channels and an elastic member used for pushing the sliding blocks to slide towards the outside of the main body; and each sliding block is provided with a first ratchet tooth fitted with the first meshing surface to achieve engagement.

A power latch assembly for motor vehicle closure applications has a single motor operable to move a pawl from a ratchet holding position to a ratchet releasing position; place the power latch assembly in a double pull mechanical release state, and place the power latch assembly in a child lock state.

The invention discloses a protective base for an outdoor box-type substation, and belongs to the field of box-type substations. The guide assembly and the bearing plate are both arranged in the protection box; a ratchet wheel and a rotating plate are rotatably connected to the inner wall of the protection box, a reciprocating lead screw is fixedly connected to the upper end of the ratchet wheel, a through groove is formed in the upper end of the bearing plate, a moving column is slidably connected to the interior of the through groove, a right-angled U-shaped plate is fixedly connected to the inner side of the moving column, and a sliding block A is slidably connected to the inner side of the right-angled U-shaped plate; a supporting plate is hinged to the outer wall of the sliding block A. Self-adaptive leveling and height adjustment of the transformer substation base are achieved through mechanical linkage, the position of the supporting plate can be adjusted according to the specific position of a concave-convex part while the concave-convex part at the bottom of a transformer substation is supported, meanwhile, the height of the transformer substation can be adjusted after the transformer substation is fixed, and convenience is provided for subsequent operation.

The invention discloses a quick assembly and disassembly type modular telescopic supporting structure, and belongs to the field of general machinery design. The problems that a traditional supporting structure is low in disassembly and assembly efficiency, poor in adjusting precision and inconvenient to store and transport are solved. The structure comprises an outer cylinder, a self-locking telescopic structure, a magnetic suction quick-connection node structure and folding devices, the bottom end of the outer cylinder is movably connected with the magnetic suction quick-connection node structure, an inner cavity is connected with the self-locking telescopic structure in a clamped mode, and the folding devices are annularly fixed to the surface of the magnetic suction quick-connection node structure. The self-locking telescopic structure adopts a self-locking telescopic unit of a hexagonal nested sleeve, and is matched with an elastic ratchet bar, a slope clamping block and a compression spring, so that single-hand downward pressure stepless regulation is realized, locking is realized by virtue of friction and occlusion, the vertical deviation is small, and the bearing capacity is high; six permanent magnets are arranged at the bottom and an inner cavity of the magnetic attraction quick connection node, are distributed in an annular array mode and are quickly spliced by rotating and clamping the bottom end of an outer cylinder, electric power is not needed, and the bolt risk is avoided. And the folding storage mechanism supports quick disassembly of the supporting legs and is convenient to store and carry.

The invention discloses a double-connecting-rod type nut tightening device for a deep disc cavity of an aero-engine, and relates to the technical field of aero-engine manufacturing, the double-connecting-rod type nut tightening device comprises a biaxial truss, a horizontal rotating mechanism, a double-connecting-rod mechanism and a tightening mechanism; wherein the horizontal rotating mechanism is mounted at the output end of the biaxial truss and comprises an outer cylinder rotationally connected with the output end of the biaxial truss; the double-connecting-rod mechanism comprises an overturning shell and an overturning driving part, the overturning shell is installed at the lower end of the outer cylinder in a vertical overturning mode, and the overturning driving part is used for driving the overturning shell to vertically overturn by 90 degrees; the tightening mechanism comprises a first motor, a transmission inner shaft, a second screw rod, a linkage piece and a ratchet wheel head. The nut in the rotor of the aero-engine can be tightened in a mechanical mode, the problem that the nut is not easy to tighten due to the fact that the internal space of the rotor of the aero-engine is narrow is solved, convenience is brought to installation of the aero-engine, and the production efficiency is improved.

An engagement structure of a ratchet wrench, the ratchet wrench contains: a body which including a drive head, a ratchet portion, and the engagement structure. The engagement structure includes a through orifice, a first defining notch, a second defining notch, a receiving notch, and a spring. An abutting member includes a first arcuate cutout, a coupling column, a locking orifice, and a first limitation protrusion. A retainer is mounted on the through orifice and includes a second arcuate cutout, a connection trough, a passing aperture, and a second limitation protrusion. When the abutting member is received in the through orifice, the first limitation protrusion is engaged in the first defining notch, the coupling column is connected with the connection trough, and a locking element is locked with the locking orifice. The second limitation protrusion is engaged in the second defining notch, and the spring abuts against the coupling column.

Disclosed are reducer instrument locking mechanisms. They can be located near a center pivot joint of the reducer, thereby eliminating a ratchet at the reducer proximal end. The locking mechanisms can include a pawl or latch that travels with one handle from an open position to a closed position. The pawl can fall into a groove formed in an opposing handle such that handles of the reducer can be locked relative to one another, at least with regard to movement of the handles away from one another. When falling into the groove, the pawl can create an auditory and / or tactile indication that a sufficient amount of rod reduction has been achieved to allow for set screw insertion. After set screw insertion, the reducer locking mechanisms can be released to clear it of the groove and allow the reducer to return to its open position.

Devices and methods for driving a micrometer are provided. The device includes a body, a collet, a motor, and a controller. The body is configured to be coupled to a frame of the micrometer. The collet is configured to be coupled to a ratchet of the micrometer and to rotate the ratchet. The motor is coupled to the collet and rotates the collet to rotate the ratchet. The controller controls operation of the motor.

A closure latch assembly includes a ratchet and a pawl, with the ratchet being moveable between a striker capture position and a striker release position and the pawl being moveable between a ratchet holding position, whereat the ratchet is maintained in the striker capture position, a ratchet release position, whereat the ratchet is biased toward the striker release position. A power actuator operably coupled to a drive gear having an actuation feature fixed thereto, wherein rotation of the drive gear from a rest position in a first direction causes the actuation feature to operably move the pawl between the ratchet holding position and the ratchet release position, and wherein rotation of the drive gear from the rest position in a second direction causes an outside door handle to be brought into an operable condition to allow mechanical actuation of the closure latch assembly via the outside door handle.

The invention provides a metal plate bending fatigue testing device, and relates to the technical field of bending fatigue testing assistion.The metal plate bending fatigue testing device comprises a portal frame, a testing device support, a testing pressure applying assembly and two bearing assemblies, and the testing pressure applying assembly comprises a hydraulic push rod, a T-shaped plate, a rotating air cylinder, an adjustable pressure applying piece and a roller assembly; the two bearing assemblies each comprise a supporting round rod, a transverse rod base and a vertical plate base, two round rollers are arranged between the two supporting round rods, and ratchet wheel assemblies are arranged at the two ends of the two round rollers; according to the technical scheme, a T-shaped plate is controlled by a hydraulic push rod to drive an adjustable pressure applying piece and a roller assembly to move towards the bottom, and a rotary air cylinder drives the adjustable pressure applying piece to drive the roller assembly to rotate, so that a sample plate is supported by a supporting round rod and a round roller, and the roller assembly applies pressure when rolling at the center of the top of the sample plate; the effect of expanding the bending angle of the sample plate is achieved, and the basic requirement for simulating the working state is provided for data acquisition in the subsequent sample plate fatigue test.

The invention discloses an intelligent control anchor chain winding and unwinding system, and relates to the technical field of marine equipment, the intelligent control anchor chain winding and unwinding system comprises an anchor chain winding and unwinding mechanism, the anchor chain winding and unwinding mechanism is provided with an anti-inversion mechanism, the anti-inversion mechanism comprises a ring block with a hole, a rotating rod, a long rod, an electric cylinder and a gear ring, and the inner part of the ring block with the hole is rotatably connected with an inner ratchet wheel; a gear ring is fixed in the annular groove, the outer surface of the rotating rod is fixedly sleeved with a gear, a limiting block is fixed to the rotating disc, a clamping block is additionally installed at the telescopic end of the electric cylinder, a round rod is fixed to the surface of the rotating disc, and a pawl is rotationally connected to the outer surface of the round rod. According to the anchor chain braking device, the anchor chain can be braked in time when the power for driving the anchor chain chain wheel fails, so that the situation that the released length exceeds the safety range due to the fact that the anchor chain which is being withdrawn continuously slides down is avoided, the safety of a ship in the traveling process is improved, and meanwhile the service life of the anchor chain is prolonged.

The invention relates to the technical field of pipe jacking construction, and provides a pipe jacking jacking iron rapid locking and retracting device which comprises a jacking mechanism and O-shaped jacking iron, the jacking mechanism comprises a plurality of jacking jacks, and the ends of jacking piston rods of the jacking jacks are connected with end sockets; a clamping ring is arranged at one end, corresponding to the jacking jack, of the O-shaped jacking iron, a clamping assembly is arranged in the clamping ring, and the clamping assembly comprises a mounting groove, a buckling piece and an elastic piece. When the end of the jacking jack extends into the clamping ring, the buckling piece and the elastic piece are pressed to enter the mounting groove, and when the end of the jacking jack moves to the clamping gap, the elastic piece drives the buckling piece to reset and clamp the end. The clamping ring is further provided with a limiting mechanism used for limiting retraction of the elastic piece. The limiting mechanism comprises a limiting base, a limiting ratchet wheel, a limiting pawl and a limiting driving piece. The pipe-jacking jacking iron and the jacking jack can be rapidly and stably connected, and the effect that in the pipe-jacking construction process, the O-shaped jacking iron needs to be frequently and secondarily hoisted is effectively improved.

The invention provides a chain wheel type movable chassis and a method, and belongs to the technical field of road and bridge construction, the chain wheel type movable chassis comprises a pedestal, two ends of the pedestal are rotatably connected with a driving chain wheel and a driven chain wheel respectively, and the driving chain wheel and the driven chain wheel are connected through a transmission chain; the driving chain wheel is driven by a driving assembly to rotate. The top of the pedestal is slidably connected with a sliding seat, and a formwork beam needing to be moved is arranged on the sliding seat. The inner side of the sliding seat is connected with a boss, a guide hole is vertically formed in the boss, a driving rod is inserted into the guide hole, the bottom of the driving rod is connected with a ratchet block, and the ratchet block can be inserted into the transmission chain to drive the pedestal to move along with the transmission chain. Through the driving rod, the ratchet block and the reset spring and by adopting a chain type transmission structure, the ratchet block is inserted into the transmission chain at the starting section, the driven chain wheel ejects the ratchet block out of the gap of the transmission chain at the terminal section, the sliding seat and the template beam on the sliding seat move along the pedestal, a track does not need to be independently fixed, the requirement for the foundation parallelism of a site is low, and the construction efficiency is high. And the cost for burying the track is saved.