55results about How to "Guaranteed tilt angle" patented technology

The invention discloses an automatic dispensing and glue point detection device and a dispensing and detection technology of the device. The device comprises a machine table, a transfer mechanism, a dispensing platform, a dispensing mechanism, a detection platform and a CCD mechanism. The transfer mechanism transfers electric cores to be dispensed and dispensed electric cores to the dispensing platform and the detection platform synchronously; a dispensing gun of the dispensing mechanism is aligned to an aluminum plastic film edge on one side of an electric core center line, the aluminum plastic film edge does linear motion relative to the dispensing gun, and the dispensing gun dispenses glue to the aluminum plastic film edge on one side of the electric core center line; the dispensing gunis rotated by 90 degrees to the other side of the electric core center line, and the dispensing gun carries out uniform interval dispensing on the aluminum plastic film edge on the other side; afterdispensing is finished, the CCD mechanisms scans the contour of the aluminum plastic film edge and glue points on the aluminum plastic film edge, and a code scanning assembly of the detection platformscans and records two-dimensional codes at the bottom of the electric cores. Automatic, uniform and precise dispensing is achieved for narrow edge aluminum plastic films, uniform sticking of glue isensured, the dispensing efficiency is improved, and the dispensing and follow-up encapsulation yield is improved.

The invention discloses a floor-sweeping robot for easy mop replacement, comprising a robot, four right angles of the bottom of the robot are provided with rollers, both sides of the robot are movably connected with mechanical arms, and the two mechanical arms are opposite to each other. One side is fixedly connected to one end of the two connecting rods respectively, and the opposite ends of the two connecting rods are respectively fixedly connected to both sides of the cylinder, and an adjustment groove is opened in the cylinder, and both sides of the inner wall of the adjustment groove are opened There is a circular groove, and a round block is sleeved in the circular groove, and the gap in the circular groove is filled with an anti-slip layer. Through the improvement of the round block, when the round block rotates in the circular groove, it can drive the adjustment rod to rotate, so that the inclination angle of the handle can be adjusted. When the two push plates are pressed relatively, the vertical plate can drive the two clamps. The block breaks away from the draw-in slot at the same time, and the pressing plate is released. Under the action of the elastic force of the extrusion spring, the vertical plate can drive the two blocks to snap into the draw-in slot, thereby achieving the effect of being convenient for installing the broom.

The invention discloses a spoke fixing member used for a carbon fiber rim of a bicycle. The spoke fixing member comprises a fixing part and a supporting part, wherein the fixing part is formed through extension along an axial direction of a virtual shaft; the supporting part is formed at one end of the fixing part and is formed through radial extension by regarding the virtual shaft as an axis; a positioning hole is formed in the spoke fixing member in a penetrating manner; the positioning hole is sleeved to the spoke of the bicycle; the supporting part supports against the carbon fiber rim of the bicycle; the spoke fixing member can fix the spoke when the spoke delivers a twisting force to drive the carbon fiber rim, so that the spoke cannot move, with respect to the carbon fiber rim.

The present invention provides a constant velocity universal joint, in which a ring member (50) is mounted on a cylindrical portion (45) of a trunnion (44), and rollers of a needle bearing (46) are held on the inner peripheral portion The part (48) is mounted on the cylindrical part (45). The needle bearing (46) is held with a predetermined gap between a flange portion (60) formed at one end of the roller member (48) and an annular member (50) attached to the trunnion (44). In addition, the gap (X) between the needle bearing (46) and the ring member (50) is set to satisfy the following relationship: X>R / 2·(1 / cos θmax-1), where R represents the roller The radius of rotation of the center of the sub-part (48) relative to the central axis of the outer part 32, θmax represents the maximum inclination angle of the inner part (34).

The invention relates to a scraper for silk-screen printing which comprises a rake face. The rake face is arranged on one side of the heading direction of the scrapper and forms a preset included angle with a silk-screen plate at utilization time. The scraper further comprises an inclined pressure applying face forming a preset included angle with the rake face. The bottom edge of the inclined pressure applying face is connected to the rake face so as to jointly form, with the silk-screen plate, a thick liquid scrapping face of a wedge-shaped thick liquid storage area with an opening facing the heading direction of the scrapper at utilization time. The scraper for the silk-screen printing can evenly apply pressure to thick liquid, so that the uniformity of the silk-screen printing products can be improved.

The invention discloses a connecting system of a prefabricated assembly type wood-concrete assembly structure. The connecting system comprises a wood beam, a prefabricated concrete board and an assembly type shear connector, wherein the assembly type shear connector comprises a special pre-embedded part, an inclined hole and an assembly bolt; the special pre-embedded part comprises an inclined steel sleeve, a trapezoidal steel plate, a penetrating rib hole and cylindrical foam; after prefabricated concrete board is cast and formed, the cylinder foam is damaged to form the inclined hole; the assembly bolt drills into the wood beam along the inclined hole and the inclined steel sleeve, so that bolt sinking needs to guarantee during drilling; and after the inclined hole is assembled, early-strength low-shrinkage cement mortar is adopted to fill up. A method of enabling the special pre-embedded part to match with the assembly bolt is utilized, so that connection of the prefabricated assembly type wood-concrete assembly structure is realized. The connecting system is low in construction difficulty, is high in assembly efficiency, has higher slippage rigidity compared with a cast-in-place type inclined bolt, and has better bearing ability and ductility performance.

The invention discloses an automatic numerical control machine tool. The automatic numerical control machine tool comprises a supporting base, a clamping assembly is arranged on the surface of the topof the supporting base, a mounting frame is arranged at the top of the supporting base, an adjusting mechanism is arranged on the mounting frame, a collecting mechanism is arranged at the bottom of the supporting base, the clamping assembly comprises a driving motor, the driving motor is fixedly arranged inside the supporting base, two synchronous belt wheels are fixedly arranged at the power output end of the driving motor, and a forward screw rod and a reverse screw rod are arranged on the two sides of the driving motor respectively. According to the automatic numerical control machine tool, the adjusting mechanism is arranged so that the numerical control machine tool can be adjusted at multiple angles and multiple positions according to different machining requirements when the numerical control machine tool is used, and therefore different use requirements can be met; and the mechanism of a common numerical control machine tool is optimized, and the collecting mechanism is arranged so that chippings are not splashed when the numerical control machine tool is used, and the trouble of manual cleaning is omitted.

The wavy wheel wobbling washer includes one outer tub, one inner tub, one wavy wheel, one dewatering shaft connected to the inner tub, one wavy wheel shaft coaxial with the dewatering shaft, and one wavy wheel wobbling unit. The wavy wheel wobbling unit includes one driving shaft connected to one universal rotation shaft and one driving part connected to the driven shaft of the universal rotation shaft. The wavy wheel wobbling washer has also one unidirectional bearing outside the dewatering shaft, one end thrust bearing set inside the cavity between the driving part and the driven part, one gap clutch between the driving part and the driven part, and one pendulating part for the wavy wheel to be fixed on. The wavy wheel wobbling washer washes clothes by means of wobbling the wavy wheel, and has the advantages of saving in water, saving in detergent and no twisting of washed clothes.

The invention relates to a tank-type circuit breaker, which comprises a circuit breaker bracket, three pairs of insulators, transformers, conductive support seats and an operation box, wherein three tank bodies distributed side by side are horizontally arranged at the upper end of the circuit breaker bracket; the three pairs of insulators are arranged at the upper ends of the three tank bodies separately; each insulator comprises an obliquely arranged conducting tube; an air chamber also sleeves the outer side of the lower end of each conducting tube; the upper end of each conducting tube is connected with the top end of a lead-out bushing through a regulating mechanism A; one transformer is arranged at the outer side of each air chamber; one conductive support seat is arranged in each tank body; one connection seat, one moving side conductive support seat and one static side conductive support seat are integrally manufactured; each connection seat is also provided with a regulating mechanism B; and the operation box is arranged at the side end of the circuit breaker bracket and connected with the three tank bodies. The tank-type circuit breaker has the advantages that installationof the conducting tubes is facilitated, manufacturing is facilitated and the breakdown phenomenon can be effectively reduced.

A rail clamping device used for a caterpillar band engineering machine comprises a left rail clamp (4) and a right rail clamp (8), the left rail clamp (4) and the right rail clamp (8) respectively comprises an upper plate, a side plate and a lower plate, each upper plate (8-0), the corresponding side plate (8-3) and the corresponding lower plate are fixedly connected or formed in an integrated mode to be of a semi-I-shaped structure, each side plate is perpendicular to the corresponding upper plate, a pair of pull rod holes are formed in a spaced mode in the length direction of the side plates, and a reinforcing rib plate is perpendicular to the side plates and arranged near the pull rod holes; a pull rod (7) penetrates through the side plate of the left rail clamp (4) and the side plate of the right rail clamp (8) and is fastened, the pull rod is sleeved with a spacer bush (6), and the spacer bush (6) is located between the side plate of the left rail clamp and the side plate of the right rail clamp; the included angle between the lower surface of the lower plate and the upper surface of the upper plate of the left rail clamp is minus 2 degrees-minus 15 degrees, and an axial limit plate is fixedly connected to the position, opposite to a caterpillar wheel of the engineering machine, of the lower end of the outer surface of each side plate. The rail clamping device is simple in structure and convenient to repair.

The invention discloses a tip hooking method capable of improving bamboo forests for bamboo shoots, and belongs to the field of a bamboo shoot cultivating technology. The tips, which are 2.5-3.0m far away from the ground, of the bamboo forests which are 1-2 years old are hooked in winter / dry season, spring / rainy season, leaving 1-2 branches, removing the advantages of the top ends of bamboos to promote the transportation and distribution of hormone, glucose and other carbohydrates to underground bamboo shoots and other organs from ground leaves, branches, steams and the like, therefore the germination rate and the weight of bamboo shoots can be improved, and the yield of the bamboos can be improved; furthermore, the economical benefit can be improved by improving a traditional way of cultivating bamboo forests for bamboo shoots and promoting the cultivation of the bamboo shoots to the dwarfing and gardening development.

The invention relates to an electric automobile motor installation carriage which comprises a lower bearing support and an upper motor bearing support. A bearing of the upper motor bearing support is tilted and is positioned on the lower bearing support, and the upper motor bearing support is provided with a motor fasten part. Preferably, a fixed support leg is arranged under the upper motor bearing support, and the fixed support leg is sleeved on the lower bearing support. The lower bearing support comprises a support pedestal which is provided with two sets of support leg assemblies in a parallel way. The support leg assemblies comprise a first support leg and a second support leg which are arranged with intervals and unequal heights. The upper motor bearing support is a motor loading plate with an arced cross section. The motor fasten part comprises an anti-thrust block, a mounting base and an adjusting bolt. The electric automobile motor installation carriage has the characteristics of unique design and concise structure, installation is simple, accurate, stable and safe by employing the electric automobile motor installation carriage to install a motor, and the electric automobile motor installation carriage is suitable for large scale popularization application.

The invention discloses an artificial planting method of liquorice. The key points are as follows: during the transplanting process, a bidirectional single furrow mechanism reversible plough is used for digging a transplanting groove the depth of which is 45-50cm and the spacing of which is 30-40cm; farm manure and chemical fertilizer are uniformly applied at the active soil side of the transplanting groove, the active soil side is flattened artificially and the included angle between the active soil side and a horizontal plane is caused to be 50-60 degrees; the root and shoot of liquorice areobliquely arranged on the active soil side of the transplanting groove, the included angle between the root and shoot and the horizontal plane is 40-50 degrees, the distance between the shoot head and the ground surface is 5-10cm and the distance between shoot heads is 10-15cm; and then earthing, compacting and watering are carried out. The method saves manual work of transplantation and is goodin transplanting quality, beneficial to the full absorption and use of water and nutrition in soil by liquorice, high in the output of liquorice, good in the quality of liquorice and labor-saving in excavation.

The invention discloses a positioning device and method for a tunnel oblique hole slotting blast hole. The device comprises a blast hole positioning mechanism which is attached to the tunnel face of atunnel, and the blast hole positioning mechanism is connected with a blast hole angle adjusting mechanism located on the outer side of the tunnel face of the tunnel through a connecting mechanism; ablast hole positioning ring is arranged on the blast hole positioning mechanism, and the circle center of the blast hole positioning ring coincides with a blast hole identification point; an angle adjusting ring is arranged on the blast hole angle adjusting mechanism, and the circle center of the angle adjusting ring and the circle center of the blast hole locating ring are located on the same horizontal plane; and the angle adjusting ring is used for moving relative to the blast hole positioning ring on the same horizontal plane so as to adjust the inclined angle of a drill rod penetrating through the blast hole positioning ring and the angle adjusting ring. According to the device and the method, the inclined angles of slotting blast holes can be ensured to meet the design requirements,the bottoms of the plurality of slotting blast holes can be arranged on one vertical surface, so that the preset slotting effect can be achieved, and meanwhile, the device can be repeatedly used and can be applied to the condition of multiple slotting angles.

The present invention relates to a fixing device for an open-wedge high tibial osteotomy, and more specifically, to a fixing tool for an open-wedge high tibial osteotomy installed on the tibia, which has been cut open through tibial osteotomy, comprising: a fixing plate comprising a head portion provided with a plurality of nut holes, and a thin and long plate, which comprises a plurality of nut holes and an elongated hole and is formed so as to protrude from one side of the head portion; screws which are coupled to the nut holes; and a block detachably installed on the elongated hole by using a fixing screw. As a result, the tool can be closely fixed to the tibia that has been cut open due to the open-wedge high tibial osteotomy, thereby enabling solid fusion of the tibia.

The invention discloses a dust-proof low-noise perforating device for building engineering, which relates to the technical field of building perforating. The invention comprises a rack; A push-pull handle is fixedly connected on both back sides of the frame; At one end face of that frame, a plurality of elastic position blocks are fixedly connecte; A punch is twisted on two opposite surfaces of the machine frame; The puncher comprises a limiting block; At one end face of that limit block, a plurality of hydraulic rods are fixedly connecte; A fixed block is fixedly connected with one end of a plurality of hydraulic rods away from the limit block; One end face of the fixing block is fixedly connected with a motor; A sound insulation block is fixedly connected with the peripheral side of themotor; A dust-proof part is fixedly connected at one end of the fixing block away from the motor; At one end face of that limit block, a plurality of sliders are fixedly connecte through a shock absorbing spring. Through the design of the dust-proof part, on the one hand, the device can effectively prevent dust from escaping in the drilling process, on the other hand, the dust-proof part can alsobe used as a protection mechanism to prevent substances such as stones from splashing in the crushing process.

The invention discloses a supporting mechanism for replacing trailer tires. The supporting mechanism comprises a bottom plate, a hydraulic jack is fixedly installed on the surface of one end of the bottom plate, a supporting rod is rotatably installed on the surface of the other end of the bottom plate through a rotating block, a hinge seat is arranged at the other end of the supporting rod, a guide rod is installed on the surface of the hinge seat in a hinged mode, a sliding cylinder is slidably mounted on the surface of the guide rod, a detaching disc is fixedly connected to the surface of the sliding cylinder, a long-strip sliding groove is formed in the surface of the detaching disc, an adjusting sliding block is slidably mounted on the side face of one end of the long-strip sliding groove, a right-angle positioning rod is fixedly connected to the surface of one side of the adjusting sliding block, a threaded rod is rotatably mounted on the side face of the long-strip-shaped sliding groove, and the surface of the threaded rod is in threaded connection with the surface of the adjusting sliding block, so that the use convenience and stability can be greatly improved, and the safety and high efficiency of disassembly and replacement are guaranteed.

The invention relates to the field of building construction, in particular to a fabricated toilet ground system. The fabricated toilet ground system comprises a ground overhead unit, a chassis unit and a pipeline assembly, the ground overhead unit comprises a first supporting plate and a first supporting mechanism, and the first supporting mechanism is connected with the first supporting plate; the chassis unit comprises a plurality of groove-shaped plates with openings facing downwards, each groove-shaped plate is provided with a top plate and a side plate, the groove-shaped plates are sequentially spliced to form an integral frame, and a water passing opening is formed in the top plate of at least one groove-shaped plate in the integral frame; the bottom edges of side plates of the groove-shaped plates are horizontal edges, the top edges, used for being connected with the top plates, of part of the side plates are bevel edges, and the side plates are supported at the bottoms of the groove-shaped plates; and the pipeline assembly comprises a pipeline and pipe lines, the pipeline is arranged below the chassis unit and connected with the water passing opening, and the pipe lines are arranged below the ground overhead unit and connected with the first supporting mechanism. The system does not need to consider the influence of the pipe lines on the chassis structure, so that the chassis unit structure is simple, and the production efficiency is improved.

The invention provides a high-level parallel drilling gas extraction method in swelling rock strata. The technical problems existing in gas extraction on coal seams of the swelling rock strata in the prior art are solved. The high-level parallel drilling gas extraction method in swelling rock strata comprises the steps that a drilling field is arranged in a return air tunnel and drilling holes are constructed vertically to a roof of a coal seam by using a drilling rig; when the drilling rig reaches the swelling rock stratum, drilling vertically upwards is carried out, and the drilling rig penetrates through the swelling rock stratum; the drilled holes are enlarged to form a first hole section; casing running operation is carried out and cement slurry is used for fixing pipes; drilling along the first hole section is continued with a deflecting drilling tool so that a second hole section with a certain inclined radian is formed; after the drilling of the second hole section is completed, the casing running operation can be carried out, and the drilling is continued in an extending mode along the second hole section into the coal seam, and it is ensured that the drilling inclination is consistent with the coal seam dip angle, so that a third hole section parallel to the coal seam dip angle is formed; and gas extraction pipe communicates with an extraction device to carry out the gas extraction operation.

The invention discloses a method for mounting a support column of a slag notch of an incinerator. The method includes steps of 1), properly positioning so that the angle between an oblique support plate and a horizontal plane is 40 degrees; 2), unscrewing a nut on a bolt connected between an upright column body and an upright column connector so that the upright column connector can freely rotate around the bolt; 3), adjusting the position of the upright column connector so that a support surface of the upright column connector completely contacts with the oblique support plate; 4), adjusting the elevator of the bottom of the upright column body; 5), welding a base of the upright column body with an embedded plate on a foundation; 6), firmly welding the upright column connector with the oblique support plate; and 7), screwing down the nut and firmly welding a hinge position. During installation, the upright column connector can sufficiently contact with the oblique support plate, accordingly, the problem of difficult welding is solved, work efficiency is improved, and installation time is shortened. In addition, a proper oblique angle of the oblique support plate is guaranteed, a support surface of the oblique support plate can be completely fit with the bottom surface of the slag notch, and service lives of the slag notch and the support column are prolonged.

The invention discloses an ice breaking machine for a pond. The ice breaking machine for the pond comprises a supporting mechanism, a motor, a main shaft and spiral blades. The ice breaking machine for the pond is characterized in that the main shaft is arranged at the center of the motor, the plurality of spiral blades are arranged and are inlaid in the outer side of the main shaft, a protectivecover is arranged on the outer sides of the spiral blades, the motor is located on the rear side of the protective cover, moreover, a motor cover is arranged on the outer side of the motor, a handle and a bent support are arranged on the outer side of the motor cover correspondingly, the handle and the bent support are symmetrically arranged, positioning blocks are arranged on the two sides of thebent support, a guide block is arranged between the two positioning blocks, moreover, reinforcing ribs are arranged on the outer sides of the positioning blocks, a base is arranged under the positioning blocks, and the supporting mechanism is arranged below the base. According to the ice breaking machine for the pond, the motor is used for driving the spiral blades to rotate, so that acceleratedflowing of water flow is achieved, and the water flow impacts ice blocks on the surface of the pond, the melting speed of the ice blocks is accelerated, and then the ice breaking effect is achieved.

The invention discloses a tiltable soup pot, which comprises a car body. The car body is provided with a pot body. The side wall of the pot body is rotatably connected with the car body through a horizontal shaft. One end of the shaft extends into the installation cavity, and a section of the shaft in the installation cavity is sleeved with a driven gear. The invention has a simple structure. When the pedal is stepped on, the pedal drives the rack to move down, the rack meshes with the gear ring, and the gear ring drives the arc-shaped boss to move relative to the pressure bar and staggers. Under the elastic force of the first spring, the friction block and The horizontal shaft is separated, the horizontal shaft can rotate freely, and the vertical shaft can be rotated to adjust the inclination angle of the pot body through gear transmission, which is convenient to control, and the pedal is released. Using the above principle, the friction block can be fixed when it comes into contact with the horizontal shaft. And keep the inclination angle of the pot body, the adjustment angle is large, and the operation is convenient, so as to prevent people from directly contacting the pot body and causing burns.

The invention discloses a positioning device for cutting a blast hole with a slanted hole in a tunnel, which comprises a blast hole positioning mechanism fitted on the tunnel face, the blast hole positioning mechanism is connected with a blast hole located outside the tunnel face through a connecting mechanism Angle adjustment mechanism; the blasthole positioning mechanism is provided with a blasthole positioning ring, and the center of the blasthole positioning ring coincides with the blasthole identification point; the blasthole angle adjustment mechanism is provided with an angle adjustment ring, and the circle center of the angle adjustment ring coincides with the blasthole positioning The center of circle of the ring is located on the same horizontal plane; the angle adjustment ring is used to move relative to the blasthole positioning ring on the same horizontal plane to adjust the inclination angle of the drill pipe passing through the blasthole positioning ring and the angle adjustment ring; through the device of the present invention and The method can ensure that the inclination angle of the cutting hole meets the design requirements, so that the bottom of multiple cutting holes can be on a vertical plane to obtain a predetermined cutting effect. At the same time, the device can be used repeatedly and is suitable for various cutting The case of slot eye angles.

The invention discloses an auxiliary measuring device used for raking pile construction. The auxiliary measuring device comprises a folded plate and a portal. The length of long plate bodies of the folded plate is equal to the diameter of a raking pile hole. The length of a bevel edge of a right-angle plate of the portal is equal to that of the long axis of an oval orifice of the raking pile, and the length of a second right-angle edge is equal to the diameter of the raking pile hole, that is, the midpoint of the second right-angle edge, the midpoint of the bevel edge and the midpoints of the long plate bodies of the folded plate are on the same straight line. The distance between the midpoint of the bevel edge and openings of the folded plate is measured according to computation, the deviation between the computed value and the measured value can verify the deviation between the inclination angle of the dug depth and the ideal inclination angle, and the inclination angle of the raking pile under the condition that manually dug holes are deep is ensured through the scheme. According to the construction method, the measuring device in the scheme is adopted for measurement after the raking pile depth is greater than 2.5 m, eight sets of data are measured and sampled, comparison between the eight sets of data and the computed distance is conducted, the inclination angle of the raking pile is corrected, and the inclination angle of a raking pile under the condition that manually dug holes are deep is further ensured.

The invention discloses an automatic numerical control machine tool, which comprises a support seat, a clamping assembly is arranged on the top surface of the support seat, a mounting frame is installed on the top of the support seat, and an adjustment mechanism is provided on the mounting frame. A collection mechanism is provided at the bottom of the support base, the clamping assembly includes a drive motor, and the drive motor is fixedly installed inside the support base. In the present invention, by providing an adjustment mechanism, the CNC machine tool can be adjusted at multiple angles and positions according to different processing needs during use, thereby meeting different use requirements. By optimizing the mechanism of a commonly used CNC machine tool, a collection mechanism is provided , so that it can collect splashed debris during use, saving the trouble of manual cleaning.

The invention discloses an ice breaking machine for a pond. The ice breaking machine for the pond comprises a supporting mechanism, a motor, a main shaft and spiral blades. The ice breaking machine for the pond is characterized in that the main shaft is arranged at the center of the motor, the plurality of spiral blades are arranged and are inlaid in the outer side of the main shaft, a protectivecover is arranged on the outer sides of the spiral blades, the motor is located on the rear side of the protective cover, moreover, a motor cover is arranged on the outer side of the motor, a handle and a bent support are arranged on the outer side of the motor cover correspondingly, the handle and the bent support are symmetrically arranged, positioning blocks are arranged on the two sides of thebent support, a guide block is arranged between the two positioning blocks, moreover, reinforcing ribs are arranged on the outer sides of the positioning blocks, a base is arranged under the positioning blocks, and the supporting mechanism is arranged below the base. According to the ice breaking machine for the pond, the motor is used for driving the spiral blades to rotate, so that acceleratedflowing of water flow is achieved, and the water flow impacts ice blocks on the surface of the pond, the melting speed of the ice blocks is accelerated, and then the ice breaking effect is achieved.

The invention discloses a method for manufacturing a multi-angle V-shaped or U-shaped crack of a tensile soil sample, and belongs to the technical field of geotechnical tests of geotechnical engineering, and the method comprises the following steps: A01, firstly, assembling a tensile soil sample mold, assembling a left end bottom plate, a middle bottom plate and a right end bottom plate together through clamping grooves, then inserting two baffle plates without crack gaps into the mold through the clamping grooves, and forming a tensile soil sample mold; placing a soil sample in the mold; a02, after the soil sample is compacted layer by layer through a compaction rod, the two baffles without crack notches are taken down, and the two baffles with crack notches are inserted again; a03, inserting the soil sample through the crack gap by using a cutter; a04, the baffle and the bottom plate are taken down, the clamping section mold is reserved, pulling force is applied to the two ends of the clamping section mold, and the exposed stretching section soil sample containing the prefabricated crack is the final soil sample needed by the test. Crack notches are prefabricated in the front baffle and the rear baffle, the accuracy of crack positions, inclination angles, sizes and crack tip shapes in soil samples is guaranteed, and repeated machining and finishing are avoided.