188 results about "Inverted t" patented technology

The invention discloses a self-resetting device capable of limiting in the transverse bridge direction and preventing a beam from falling in the longitudinal bridge direction and a manufacturing method. The self-resetting device comprises a first connecting structure, a second connecting structure and an energy consumption self-resetting assembly. The first connecting structure comprises an upper bottom plate; the second connecting structure comprises a lower bottom plate, two oppositely-arranged L-shaped steel plates are fixedly connected to the upper portion of the lower bottom plate, and sliding grooves are formed in the opposite sides of the two L-shaped steel plates. The energy consumption self-resetting assembly comprises a round rod, the two ends of the round rod are fixedly connected with steel balls respectively, the round rod is sleeved with an inverted-T-shaped sliding block, the inverted-T-shaped sliding block is in sliding connection with the round rod, the round rod is fixedly connected with two square steel plates, and a spring is arranged between each square steel plate and the inverted-T-shaped sliding block. The round rod between the steel ball and the square steel plate is slidably connected into the sliding groove of the L-shaped steel plate. The self-resetting device can effectively solve the problem of temperature fatigue damage of the damper in the daily operation stage, and can provide self-resetting capacity while effectively controlling the relative displacement of the pier beam under the action of an earthquake.

The invention provides a flexible rolling cutter and a rolling method for a thread root, the flexible rolling cutter comprises a rolling cutter head, an electromagnet device, a pressure sensor 16, an outer shell 9 and an inner shell 10, the electromagnet device is connected with the inner shell 10 through a screw, and the outer shell 9 is slidably connected with the inner shell 10; the rolling tool bit comprises a gasket 1, a rolling wheel 2, two bearings 3, a rolling mandrel 4, a pressing plate 5 and a fork frame 6, the whole fork frame 6 is of an inverted T-shaped structure, the upper end of the fork frame 6 is of a U-shaped structure, and the two ends of the rolling mandrel 4 are installed on the left side and the right side of the U-shaped structure through the bearings 3 respectively; the rolling wheel 2 is sleeved on the rolling mandrel 4; the gasket 1 is arranged between the right side of the rolling wheel 2 and the bearing 3; and the pressing plate 5 is in contact with the bearing 3 and is connected with the fork frame 6 through a screw.

To provide a reinforced concrete beam that has a highly strong beam bar excellent in workability and hardly causes cracking.SOLUTION: A reinforced concrete beam 200 has a beam bar 100 inside concrete. The beam bar 100 comprises: a lower stirrup unit 50 in which a plurality of first stirrups 10 are disposed at a predetermined pitch and a top edge main reinforcement 30 is full-strength welded; an upper stirrup unit 60 in which a plurality of second stirrups 20 are disposed at a predetermined pitch, a horizontal reinforcement 40 is welded, and no hook is provided on an end of a hanging reinforcement part 22; and a bottom edge main reinforcement 70 connected to the inside of the first stirrups 10. The horizontal reinforcement 40 is disposed on the lateral side of a bottom reinforcement part 11 and has a cross section orthogonal to a longitudinal direction in an inverted T-shape in which a lower rectangular part 150 having a first width w1 and an upper rectangular part 160 having a second width w2 narrower than the first width w1 continue. The horizontal reinforcement 40 is included in the lower rectangular part 150.SELECTED DRAWING: Figure 4

The utility model belongs to the technical field of seats, and particularly relates to a lead screw long sliding rail gap eliminating structure which comprises an upper rail and a lower rail with an inverted T-shaped groove, and idler wheels arranged on the lower portion of the upper rail can roll in the T-shaped groove of the lower rail. Bearings capable of being in elastic rolling abutting connection with the inner upper wall of the T-shaped groove and eliminating gaps are arranged on the two side faces of the upper rail in the T-shaped groove in the length direction at intervals respectively. The gap eliminating structure has the advantages of being simple in structure, reasonable in space layout, good in gap eliminating performance and suitable for the seat sliding rail.

This utility model discloses a boar pen for livestock, comprising two mounting blocks. A first crossbar is fixedly installed between the bottoms of the opposite sides of the two mounting blocks. First railings are fixedly installed at equal intervals on the top of the first crossbar. An inverted T-shaped plate is fixedly installed between the upper parts of the two mounting blocks. The tops of the first railings are all fixedly connected to the inverted T-shaped plate. Adjustable rods that can be raised and lowered are movably installed on the tops of the two mounting blocks. A second crossbar is fixedly installed between the tops of the two adjusting rods. Second railings are fixedly installed at equal intervals on the bottom of the second crossbar. The second railings movably penetrate the inverted T-shaped plate and are staggered with the first railings. Movable sleeves are movably fitted onto the surface of each first railing. The movable sleeves are fixedly connected to the bottom of the adjacent second railings through connecting blocks. This boar pen has height and spacing adjustment functions, and its performance can meet the needs of boars throughout the entire feeding process from piglets to adult pigs.

The present invention discloses a safety cage ladder, which relates to the field of safe construction technology. The cage ladder comprises a ladder body and a cage frame, wherein the cage frame is fixed to the ladder body, a longitudinal beam is provided at the center of the cage frame, an inverted T-shaped slide rail is provided inside the longitudinal beam, a following mechanism is provided in the slide rail, and the following mechanism comprises a positioning block, a rotating wheel, a locking mechanism, and an elastic fitting mechanism. The positioning block is in an I-shape and is installed in the inverted T-shaped slide rail, the top plate of the positioning block is located outside the inverted T-shaped slide rail, the elastic fitting mechanism is provided at the bottom end of the positioning block, the rotating wheels are provided on both sides of the bottom end of the positioning block, the rotating wheels match the width of the inverted T-shaped slide rail, the rotating wheels are rotatably connected to the positioning block, the locking mechanism is provided in the positioning block, the locking mechanism is rotatably connected to the positioning block, and guide rings are provided at both ends of the outer sides of the positioning block. The present invention can effectively prevent workers from falling and getting injured due to accidental loss of grip when climbing the cage ladder.

A double pressure travel switch, characterized in that it comprises two pressure switch units and an inverted T-shaped insulating seat, grooves are arranged on the platforms on both sides of the inverted T-shaped insulating seat, the two pressure switch units are arranged side by side on the platforms on both sides of the insulating wall in the middle of the inverted T-shaped insulating seat, the spring pieces are arranged below the platforms, and the contact switch part and the mounting piece part with the adjustment device are located above the platforms, wherein the contact switch part is arranged in the groove, and the spring pieces of the two pressure switch units respectively drive the contact spring pieces of their respective contact switch parts through the insulating columns on the two platforms. Compared with the prior art, the present invention has the advantages of accurate control accuracy, no mutual influence between the two pressure switch units, and prevention of water dripping pollution.

The utility model provides an assembly type construction fence which comprises a precast concrete base, a fence supporting plate and a cylindrical connecting rod, an inverted-T-shaped mounting groove is formed in the front end of the precast concrete base in a penetrating mode, a plastic frame is fixed in the inverted-T-shaped mounting groove, and the lower end of the fence supporting plate is clamped in the plastic frame. Mounting through grooves are formed in the front and rear positions of the left side and the right side of the upper end of the prefabricated concrete base correspondingly, step fixing rings are horizontally fixed to the upper ends of the interiors of the two mounting through grooves correspondingly, reset springs are installed at the lower ends of the two step fixing rings correspondingly, and the multiple cylindrical connecting rods are arranged. In order to solve the problems that in the prior art, in the prior art, time is wasted during assembly or disassembly, and the follow-up construction efficiency is affected, the spring quick clamping structure is designed, the whole fence can be conveniently and quickly installed or disassembled, the disassembly and assembly time is effectively shortened, and then time can be saved for follow-up construction operation.

The application discloses an assembled superconducting maglev track structure and a construction method thereof, and belongs to the technical field of superconducting maglev tracks. The assembled superconducting maglev track structure comprises two inverted T-shaped tracks and a connecting frame, a plurality of interval arranged adjusting holes are arranged on each inverted T-shaped track, each adjusting hole is communicated with a first wire groove or a second wire groove, a first anchoring bolt is inserted in each adjusting hole, and a suspension guide coil or a traction coil is fixed at one end of the corresponding first anchoring bolt. Two interval arranged wheel running surfaces are formed at the top of the connecting frame, the connecting frame is located between the two inverted T-shaped tracks, and the two ends of the connecting frame are connected with the corresponding inverted T-shaped tracks through post-poured belts. The assembled superconducting maglev track structure provided in the application can not only reduce concrete pouring at a construction site, but also quickly and accurately fix the suspension guide coil or the traction coil, so that the construction efficiency is improved.

The invention provides a novel material transferring system and method for continuous stamping and an automobile part stamping device.The material transferring system comprises a material transferring track, the material transferring track is in a C shape, and a guide groove with an inverted-T-shaped longitudinal section is formed in the top of the material transferring track; the guide seat is movably positioned in the guide groove, and the longitudinal section of the guide seat is matched with the longitudinal section of the guide groove; two supporting columns are vertically arranged at the top of the guide seat, L-shaped clamping arms are horizontally hinged to the supporting columns, clamping parts with V-shaped or C-shaped longitudinal sections are arranged at the free ends of the clamping arms, and openings of the two clamping parts are opposite. When the workpieces are transferred, the two clamping parts are buckled at the two ends of the corresponding workpieces; the control mechanism is used for controlling the included angle between the two clamping arms.

The utility model relates to the technical field of exposed frame, and discloses a hook-type exposed frame structure, including a plurality of groups of horizontal and vertical frames, which are arranged at equal intervals and vertically cross-distributed. Each horizontal and vertical frame is provided with a hook connection component, including an inverted T-shaped hook seat, a hook column is installed on the top surface, a hanging plate is provided on the column, and a jack is provided on the hanging plate to cooperate with the column. The set hook-type exposed frame structure has the characteristics of stable structure and convenient installation. The hook connection component adopts the design of hook seat and hanging plate, which not only makes the connection between the curtain wall and the horizontal frame and the vertical frame tighter and more stable, but also facilitates quick installation and disassembly. By setting a reinforcing rib plate, the connection strength between the hook seat and the horizontal frame and the vertical frame can be further improved, thereby improving the stability of the entire exposed frame structure. In addition, the cooperation of the self-locking block and the card slot, using gravity, can ensure the firm connection between the hanging plate and the hook seat, avoid the falling phenomenon caused by vibration or wind, thereby improving its safety and stability.

The utility model provides a cutter polishing device for machining, which comprises a top frame, polishing parts and a sliding chute, the top frame is of an inverted T-shaped structure on the right side, the upper end of the front side of the top frame is provided with a group of protective shells for protecting the polishing front side of a cutter, and the inner side of each protective shell is provided with a group of polishing parts for polishing the cutter. The grinding component comprises an electric cylinder, a worm, a worm gear and a grinding disc, and a group of guide rods used for driving the grinding disc to move up and down are arranged on the front side of the electric cylinder. The grinding layer is attached to the to-be-ground tool, the lower side of the to-be-ground tool is ground, the motor and the clamping base are used for driving the tool to adjust the rotating angle, so that grinding operation is conducted at different angles, and tool grinding chippings are collected and recycled through the recycling barrel.

The application discloses a general type of fastening and limiting device, which comprises bolt limiting blocks, the bolt limiting blocks are arranged in multiple and are arranged in general tethering holes for cooperating with mounting bolts of detachable structures or devices to realize rigid connection, the bolt limiting blocks are in inverted T-shaped cross section, the horizontal part of the bolt limiting block is invertedly buckled under the general tethering hole panel, and the vertical part is tightly embedded in the slot hole of the tethering hole panel; the general fastening and limiting device further comprises an expansion locking assembly composed of a cross mounting block, an expansion block, a pressing block and an expansion bolt, the pressing block extrudes the expansion block through the tightening process of the cross mounting block and the expansion bolt, so that the expansion block is deformed to limit the bolt limiting block in the tethering hole. The fastening and limiting scheme of the application is based on the tethering hole welded on the ship body, cooperates with various limiting assemblies and high-strength bolts, realizes the rigid connection of the detachable structures and devices and the tethering hole, and realizes the rigid connection with the ship body.

A post-tensioning system that is configured for use with concrete wind turbine foundation designs to post-tension the foundations and reduce the amount of reinforcement steel that is needed compared to conventional non-post-tensioned, steel reinforced concrete foundation designs. In the case of an inverted T gravity foundation, the post-tensioning system described herein reduces the amount of reinforcement steel that is required by 30-40 tons.

The utility model discloses a multilayer circuit board drilling positioning structure which comprises a base and a circuit board body. The multi-size adaptation assembly comprises inverted-T-shaped plates, strip-shaped bearing grooves, L-shaped sliding blocks, rectangular plates and positioning plates, the inverted-T-shaped plates are movably connected to the two ends of the base, the strip-shaped bearing grooves are formed in the side portions of the base, the two sides of the inverted-T-shaped plates are fixedly connected with one ends of the L-shaped sliding blocks, the other ends of the L-shaped sliding blocks are movably connected with the strip-shaped bearing grooves, and the rectangular plates are fixedly connected with the positioning plates. The side part of the inverted T-shaped plate is movably connected with a rectangular plate and a positioning plate, and the positioning plate is located above the circuit board body. The L-shaped sliding block can continuously move in the strip-shaped bearing groove, so that continuous movement of the inverted-T-shaped plate can be realized, namely continuous adjustment of the movement distance of the positioning plate can be realized, and clamping and positioning of multilayer circuit boards with different sizes can be realized.

This invention provides a biomimetic bud-removing claw for kiwifruit and its control method, comprising an inverted T-shaped frame, a clamping claw, a left suction claw, a right suction claw, an image detection system, and a control system. This biomimetic bud-removing claw dynamically monitors the pose of buds and pedicels using deep learning and stereoscopic vision. The clamping claw grips the main pedicel, while the biomimetic threads of the suction claw's fingertips grip the lateral buds. Based on pressure feedback, the rotation or contraction amplitude of the suction claw is adjusted to remove the lateral buds, achieving an effect similar to human hand-eye coordination during harvesting. This protects the main bud and pedicel from damage while achieving precise removal of lateral buds. The control method employs a deep fusion model of YOLOv8 and Mask RCNN to extract the main pedicel, left and right lateral buds, and their angle and orientation features, enabling the detection of kiwifruit pedicels and buds, and controlling the clamping and suction claws. Its effect is equivalent to a human's simultaneous observation, clamping, and harvesting control function.

The utility model discloses a high-speed rail coupling palletizing frame, which belongs to the technical field of palletizing frames, and comprises a bracket and universal rollers arranged at the bottom of the bracket, the top end of the bracket is symmetrically and fixedly connected with guide rails, and the top of each guide rail is provided with a guide groove of an inverted T-shaped structure. A stacking assembly is installed at the guide rail, a mounting frame is fixedly connected to the position, close to the top end of the pushing plate, of the support, a driving mechanism is installed at the mounting frame, the stacking assembly can be driven by the driving mechanism to be matched with the guide rail to conduct translation, manual movement is not needed, and the labor intensity in the working process is reduced.

The utility model discloses a corner window single-side fixing clamping piece, and belongs to the technical field of automobile parts, the corner window single-side fixing clamping piece comprises a base and a reed, the longitudinal interface of the base is of an inverted T-shaped structure, the base comprises a bottom plate and a vertical plate, the whole reed is of an inverted U-shaped structure, the reed is arranged outside the vertical plate in a sleeving mode, the reed comprises a first side plate and a second side plate, and the first side plate and the second side plate are arranged in parallel. A first notch is formed in the first side plate, the first side plate is partially located in the first notch to form a clamping jaw, and the middle of the clamping jaw protrudes towards the side away from the vertical plate to form a clamping part. The structure of the clamping piece is further optimized, the situation that a bilateral plane installation face cannot be provided due to complex automobile body metal plate forming is adapted, meanwhile, stable installation of the corner window is ensured, and the installation efficiency and the fixing strength are improved.

The utility model relates to cutting device technical field, propose a kind of angle adjustable inorganic nonmetallic material cutting device, including workbench, the workbench top is equipped with inverted T type groove, inverted T type board is movably inserted in the inside of inverted T type groove, inverted T type board one end is equipped with first threaded hole, first threaded hole inside screw thread is connected with first screw rod, first screw rod penetrates first threaded hole, inverted T type board top surface edge portion is fixed with support cylinder, the support cylinder top end is fixed with support disc, the support disc middle part is equipped with through-hole. The utility model carries out cutting by fixing material on carousel, the transverse movement of inverted T type board in inverted T type groove can drive material adjusting position, the rotation of carousel can drive material adjusting angle, so that position and angle adjustment can be carried out after material fixing, determine appropriate cutting point position, without repeatedly disassembling material, simplify operation step, improve efficiency.

The invention is applied to the technical field of loudspeakers, and particularly discloses an ultrathin loudspeaker vibration unit and a vibration method thereof.The ultrathin loudspeaker vibration unit comprises a lower base, the lower base is inverted T-shaped iron, an upper base is arranged above the lower base, the upper base is of an annular structure, the upper base and the lower base are made of the same material, and the lower base and the upper base are made of the same material. The upper surface of the lower base is sleeved with the annular upper base. According to the ultra-thin loudspeaker vibration unit and the vibration method thereof, the T-shaped lower base and the T-shaped upper base are arranged to form the groove structure, the six spirally-stacked permanent magnet units are spliced in the groove structure to form the stacked permanent magnet structure, and the magnetic sheets are spirally stacked in the permanent magnet units, so that the magnetic field intensity is enhanced, and meanwhile, the ultra-thin loudspeaker vibration unit and the vibration method of the ultra-thin loudspeaker vibration unit are improved. The vertical space is greatly compressed through the annular nested layout of the upper base and the lower base, the thickness of the whole structure is remarkably reduced, and the ultra-thin requirement is met.

1. The name of the design product: steel joint connecting node. 2. The use of the design product: the design product is mainly used for the connection between prefabricated structural beams and structural columns, or between structural beams. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: assembly state perspective view. 5. Other circumstances that need to be explained: component 1 is a inverted T-shaped embedded part, component 2 is a few character-shaped embedded part, and component 1 and component 2 are used in combination.

The utility model relates to a resin trimming wheel forming mechanism, which belongs to the technical field of trimming and comprises an inverted T-shaped frame base body, the top of the frame base body is connected with an accommodating ring, and a to-be-trimmed resin plate trimming wheel is arranged in the accommodating ring; the 0-degree position and the 180-degree position of the containing ring are connected with the plane trimming sets. Two connecting fillet trimming sets are further included, the fillet trimming sets are located at the 90-degree position and the 270-degree position of the two sides of the containing ring respectively, a supporting plate I is arranged on one side of the frame base body, and the top of the supporting plate I is connected with one fillet trimming set; a supporting transverse plate is arranged on the other side of the containing ring, and the bottom of the supporting transverse plate is connected with the other fillet trimming set. The middle of the supporting plate I is connected with a driving device I. The output end of the driving device I is connected with a to-be-trimmed resin plate trimming wheel. Equipment for trimming the filleted corner and the outer wall of the resin trimming wheel at the same time is manufactured, the practicability of the equipment is improved, and meanwhile the use efficiency is improved.

The utility model discloses an assembly type facade flower stand which comprises stand columns, flower basket guide rails are detachably installed between every two adjacent stand columns, and inverted-T-shaped groove holes are formed in the flower basket guide rails in the length direction. The back surface of the flower basket is embedded into the inverted T-shaped groove hole of the flower basket fixing guide rail through a T-shaped weight; an irrigation pipeline mounting clamping position is reserved on the back surface of the flower basket; a ventilation groove is formed in the front face of the flower basket. The inverted-T-shaped groove holes are formed in the length direction of the flower basket guide rail, the flower basket can be rapidly assembled in the flower basket guide rail through the T-shaped codes and the inverted-T-shaped groove holes formed in the flower basket fixing guide rail in an embedded mode on the back face of the flower basket, the safety of the flower basket can be guaranteed, and the phenomenon that the flower basket falls off is greatly reduced.

The utility model provides a universal installation platform for a flight training simulator motion system, which comprises three groups of groove floors and three groups of adapter plates, and the three groups of groove floors are uniformly arranged at intervals of 120 degrees; the three groups of groove floor structures are the same in size, and the length, the width and the thickness are 4000 mm, 1200 mm and 100 mm respectively; the lower surface of each group of groove floor is a plane, N longitudinal columns of inverted T-shaped grooves and N + 1 longitudinal columns of fixing holes are formed in the upper surface of each group of groove floor at intervals, foundation bolts are arranged in the fixing holes, and each group of groove floor is fixed in a deep pit of a foundation through a plurality of foundation bolts; n is an integer; the top of the bolt hole expands outwards and is provided with a nut groove, the depth of the nut groove is not smaller than 50 mm, the foundation bolt is sleeved with a nut, the height of the nut ranges from 32 mm to 35 mm, and the head of the foundation bolt is higher than the nut by not smaller than 5 mm. First bolt holes and second bolt holes are formed in the adapter plate, the first bolt holes are arrayed and matched with the N longitudinal columns of inverted T-shaped grooves at intervals, and the second bolt holes are formed in the first bolt hole array; the adapter plate is fixedly connected with the groove floor through bolts arranged in the first bolt holes. A motion platform lower hinged support of each flight training simulator motion system is fixedly connected with the adapter plate through a bolt arranged in a second bolt hole, and then is fixedly connected with the groove floor; slope-shaped guide openings are formed in the two ends of the inverted-T-shaped groove.

The present application relates to a kind of ladder climbing disinfecting robot, including front caterpillar mechanism, middle caterpillar mechanism, rear caterpillar mechanism, inverted T-shaped connecting piece, disinfecting mechanism;The front caterpillar mechanism and the middle caterpillar mechanism are connected by the horizontal edge of the inverted T-shaped connecting piece hinge connection, and the middle caterpillar mechanism and the rear caterpillar mechanism are connected by the horizontal edge of the inverted T-shaped connecting piece hinge connection;The top of the vertical edge of the inverted T-shaped connecting piece and corresponding caterpillar mechanism are connected by elastic member;The front end of the front caterpillar mechanism is obliquely arranged upwards;The disinfecting mechanism includes water tank, and the spray device connected to the water tank, and the water tank is arranged on the middle caterpillar mechanism.

The utility model relates to a three-way pressing type waterproof connector, which comprises a connecting body, the connecting body is inverted T-shaped, three ports of the connecting body are provided with connecting terminals, one surface of each connecting terminal is provided with a plurality of limiting grooves, the connecting terminals are provided with connecting holes at corresponding positions below the limiting grooves, and the connecting holes are connected with the limiting grooves. Buckling grooves are formed in the two sides of the connecting terminal, and threads are arranged at a port, connected with the connecting terminal, of the connecting body. Through the design of the inverted-T-shaped connecting body and the connecting terminals, stable electrical connection and waterproof performance are realized. Due to multiple guarantees of the threaded structure, the limiting groove and the buckling groove, accurate alignment, tight attachment and high stability of connection are guaranteed, and the connector is suitable for various environments.

The utility model relates to the technical field of hydropower station construction, and discloses a hydropower station draft tube prefabricated inverted T-shaped beam top plate structure which comprises a T-shaped beam body, the T-shaped beam body comprises a stand column and a top plate, the top plate is horizontally arranged at the upper end of the stand column, and a containing groove is formed in the upper surface of the top plate. Positioning mechanisms are arranged on the upper surface of the top plate and located on the two sides of the containing groove. Reinforcing mechanisms are arranged at the included angles between the stand columns and the two sides of the top plate. The positioning mechanism comprises a screw rod, a positioning plate and a rotating handle, a threaded seat is vertically and fixedly arranged on the upper surface of the top plate, the screw rod is transversely arranged in the threaded seat in a threaded mode, one end of the screw rod is rotationally connected with the side face of the positioning plate, and the other end of the screw rod is fixedly connected with the rotating handle. According to the T-shaped beam, the draft tube can be positioned and clamped, meanwhile, the strength of the T-shaped beam body is high, the supporting stability of the draft tube is improved, and the power generation efficiency is improved.

The utility model relates to an adjustable steel deformation correcting device which is characterized in that an adjustable top plate group is fixed on one side of a working platform side by side, two ends of a connecting plate are connected with an inverted T-shaped sliding rod, seven-shaped plates are symmetrically arranged on two sides of the lower end of the sliding rod, and the lower ends of the seven-shaped plates are fixedly connected with a bottom plate; the top of the hydraulic jack is provided with a pressing block, and the hydraulic jack is connected with the hydraulic pump through a high-pressure hose. According to the utility model, a universal mold structure with the adjustable top plate group is adopted, so that the problem of correcting deformed steel caused by flame cutting is effectively solved, the workpiece correcting time is effectively saved, the correcting quality is ensured, and meanwhile, the correcting and manufacturing requirements of more steel with different shapes can be met.

The invention provides a method and a device for testing the climbing ability of a highway tunnel horizontal rail robot, and aims to solve the problems that the friction coefficient is reduced and theoretical calculation and actual working conditions are disjointed due to rail pollutants in a tunnel, the height of a rail is adjusted through step-by-step decreasing, and a critical climbing angle is judged in combination with a laser sensor; parameters such as a rolling friction coefficient and an air resistance coefficient are introduced to evaluate the gradeability, and the defect that a traditional test method neglects environmental influence is overcome. The device adopts the design of an inverted T-shaped base bracket and a modular track, and a graded counterweight superposition test is added, so that the wide-angle working condition coverage range is expanded. According to the invention, an accurate evaluation basis is provided for tunnel robot design, and the accuracy of a robot climbing test is improved.