501 results about "Impact hammer" patented technology

According to the impact-cutting composite rock breaking hydraulic system and method for the mining heading machine, hydraulic damping and impact hammer collaborative operation are integrated, and the problems that a traditional heading machine is low in rock breaking efficiency, poor in stability and insufficient in adaptability are solved. The system comprises a cutting arm hydraulic damping system and an impact hammer hydraulic impact system, and multi-parameter closed-loop regulation and control are achieved through a controller. The device is characterized in that a double overflow protection mechanism is adopted, a proportional overflow valve and an external control overflow valve cooperate with each other, a hydraulic control one-way valve is combined for compensating an oil path, and the pressure difference of a hydraulic cylinder is dynamically kept stable; the impact hammer system adjusts the pressure of an energy accumulator through a proportional pressure reducing valve and is matched with a hydraulic control switch valve to realize variable impact energy control; based on feedback of a vibration sensor and a pressure sensor, damping and impact parameters of the cutting arm are adjusted in a self-adaptive mode through a nonlinear algorithm, and intelligent rock breaking operation under different rock stratum hardness is achieved. According to the system, the impact resistance stability, the rock breaking efficiency and the operation intelligence level of the heading machine are remarkably improved.

The invention relates to a composite percussion drilling speed increasing tool, and belongs to the technical field of drilling tools. The reciprocating hammering unit comprises a hammer body and an impact hammer, the hammer body is axially and slidably connected into the sleeve, the impact hammer is rotatably connected into the hammer body, a reversing sleeve is rotatably connected into the impact hammer, a reversing cabin is arranged on the reversing sleeve, and a reversing runner hole is formed in the hammer body; the flow channel switch unit comprises a baffle ring arranged on the surface of the hammer body and a transmission mechanism connected between the sleeve and the baffle ring, and the transmission mechanism is used for converting axial motion of the baffle ring into rotary motion so as to open or close the reversing flow channel hole. When the drilling tool is lifted, the axial movement of the baffle ring can be converted into rotary movement, so that the baffle ring rotates relative to the hammer body while axially displacing along with the hammer body, a reversing flow channel hole is shielded, and high-pressure drilling fluid cannot flow into a reversing cabin, so that high-frequency composite impact is stopped, vibration and abrasion caused by idling are avoided, and the service life of the drilling tool is prolonged. And the service life and the safety of the tool are improved.

The utility model discloses an impact testing machine for hub detection, which comprises a workbench and an impact assembly, a support is fixedly mounted at the top of the workbench, the impact assembly comprises a magnetic attraction seat, a guide plate, a guide rod, a mounting plate, a bidirectional screw rod, a fixing rod, a knob, an impact hammer and a fixing plate, and an electric telescopic rod is mounted in the middle of the top of the support. The bottom of the electric telescopic rod penetrates through the support and is fixedly provided with a connecting plate. The two-way lead screw is driven to rotate by screwing the rotary knob clockwise and anticlockwise, then the fixing rods on the two sides can be driven to move towards the outer side at the same time, fixing of the fixing plate is lost, the impact hammer can be conveniently taken down, the impact hammer can be conveniently replaced, and when the impact hammer is installed, the fixing plate is placed in the groove body, so that the impact hammer is installed conveniently. The fixing holes are aligned with the fixing rods, then the knob can be screwed anticlockwise, the fixing rods are driven to move towards the inner side at the same time, and the impact hammer is installed.

The invention provides a crimping quality online detection method and system based on acoustic emission signal analysis, relates to the technical field of industrial detection, and solves the technical problems that an existing detection method is not sensitive to early defects and is insufficient in adaptability under complex working conditions. The method comprises the following steps: applying mechanical excitation to the crimping structure, exciting the crimping structure to generate vibration response, and synchronously collecting a vibration response signal and an acoustic emission signal; wherein the mechanical excitation represents sweep frequency excitation or pulse excitation generated by a piezoelectric vibration exciter or an impact hammer so as to excite a plurality of co-frequency offset vibration modes of the crimping structure; calculating the resonant frequency of the crimping structure based on the vibration response signal; calculating frequency offset characteristic parameters according to the resonant frequency based on an inversion method of a physical model; calculating acoustic emission signal characteristic parameters based on the acoustic emission signals; and identifying the type and severity of the crimping defect by utilizing a D-S evidence theory and combining the frequency offset characteristic parameters and the acoustic emission signal characteristic parameters.

The utility model relates to the technical field of steel quality detection, in particular to a quality detection device for high-strength steel, which comprises a shell and an impact component. Through the cooperation of the screw rod and the rotating nut, the impact hammer head can be accurately controlled to move, so that the impact strength is adjusted, through the engagement of the upper end of the screw rod and the rotating nut, the impact hammer head can be controlled to move up and down through simple rotating action, and through the design of a ball and a handle arranged in the rotating nut, the impact strength is adjusted. According to the utility model, through the design of the magnetic attraction clamping seat and the chamfer of the striking hammer head, the transmission path of force is optimized, and the design of the chamfer of the striking hammer head and the magnetic attraction clamping seat is helpful for reducing the stress concentration in the striking process, and the high-strength steel detection device allows the detection of high-strength steel of different specifications and types, and improves the detection efficiency. The problem that the accuracy of evaluating the impact resistance and the fracture toughness of the material is poor due to insufficient detection strength is effectively solved.

The utility model discloses a sand screening machine convenient for classified screening, which relates to the technical field of sand screening machines and comprises a multi-stage screening component consisting of an outer screening drum, a connecting rod and an inner screening drum. Secondary screening holes and primary screening holes are formed in the outer side of the outer screen drum and the outer side of the inner screen drum respectively, and the mesh number of the primary screening holes is smaller than that of the secondary screening holes, so that screening of stones with different particle sizes is achieved. Multi-stage screening operation of materials can be achieved by arranging the structure of the inner screen drum and the outer screen drum, meanwhile, by arranging the connecting column and the self-weight impact hammer, when the connecting column rotates to be inclined upwards along with the outer screen drum, the self-weight impact hammer slides along the outer wall of the connecting column to impact the outer wall of the inner screen drum to achieve knocking vibration on the inner screen drum, and therefore the screening efficiency is improved. In this way, the gravel clamped on the inner sides of the primary screening holes are loosened and separated from the primary screening holes, the primary screening holes are prevented from being blocked, and therefore the device can keep the long-time efficient screening effect.

A steering head for a pipe ramming hammer bore construction system, configured to allows passage of soil through the center of the steering head while maintaining the ability to change the bore alignment through the use of inflatable bags which are underlying and adjacent to a portion of a shell member which extends radially outward from the steering head upon inflation of the inflatable bag. The inflatable bags may be inflated by inflation media supply lines which extend from the bore pit to the steering head and deflated by release of the inflation media. The media flow to the inflatable bags may be controlled by media valves which may be located in the steering head or, alternatively, at a different location, such as in the bore pit. The remote nature of the system eliminates the need for frequent removal of the pneumatic hammer, confined space entry, and manual corrections performed inside the casing.

A high-performance battery pack test device provided by the utility model comprises a base, a rack, a lifting mechanism, an electromagnet and an impact hammer, the upper surface of the base is provided with a battery pack placing table, the rack is installed on the base, the lifting mechanism is installed on the rack, the electromagnet is installed on the lifting end of the lifting mechanism, and the impact hammer is installed on the lifting end of the lifting mechanism. At least one impact hammer is arranged, and is magnetically attracted and fixed at the bottom of the electromagnet; the required number of impact hammers to be tested are magnetically attracted and fixed to the bottom of the electromagnet, the impact hammers at the bottom of the electromagnet fall off at the same time through power-off control over the electromagnet, impact testing is achieved, simultaneous impact testing of different numbers of impact hammers can be achieved through the electromagnet magnetic attraction and fixing mode, and use is flexible and convenient.

The invention relates to the technical field of testing, and particularly discloses a drop hammer type dynamic deformation modulus testing device and method, and the device comprises a measuring unit which is used for measuring the dynamic deformation modulus data during the impact of an impact hammer; the load guiding unit is used for periodically releasing the impact hammer to the impact platform; the lifting unit is used for continuously conveying the impact hammer at the releasing end of the load guiding unit to the throwing end of the load guiding unit; the unloading unit is used for transferring the impact hammer at the release end of the load guide unit to the input end of the lifting unit; the loading unit is used for transferring the impact hammer at the output end of the lifting unit to the throwing end of the load guiding unit; the released impact hammer is continuously lifted to the throwing end of the load guide unit by using the continuously moving lifting piece, so that continuous throwing of the impact hammer can be realized, and compared with a traditional operation process of reciprocating releasing and lifting of a single impact hammer, the dynamic deformation modulus testing efficiency can be effectively improved.

The invention discloses an impact corrosion and wear resistance test device and a use method, and relates to the technical field of test equipment. The impact corrosion and wear resistance test device comprises a test tank body, a corrosion assembly, a wear assembly and an impact assembly, wherein the test tank body is provided with an accommodating space; the corrosion assembly comprises a discharge part, and the discharge part is arranged in the test tank body and is used for injecting a corrosion medium into the accommodating space; the abrasion assembly comprises a friction piece and a first driving piece, the friction piece is arranged in the containing space and makes contact with the sample, and the first driving piece drives the friction piece to move relative to the sample; the impact assembly comprises an impact hammer and a second driving piece, and the second driving piece drives the impact hammer to intermittently impact the friction piece, so that impact pressure is transmitted to the sample through the friction piece. According to the impact corrosion and wear resistance testing device, three working conditions of corrosion, impact and wear are coupled to act on the sample, and the accuracy and reliability of part performance evaluation are improved.

The invention relates to the technical field of marine geological engineering, in particular to a submarine geological parameter fused photovoltaic foundation construction resource allocation method which comprises the following steps: collecting submarine topographic data, rock-soil physical parameters and stratum bearing capacity parameters through a shipborne multi-beam sounding system, a submarine drilling sampling device and a static penetrometer; uniformly mapping various parameters to a three-dimensional geographic coordinate system, and constructing a standardized geological data cube; the stratum shear wave velocity, the standard penetration impact number and the water content are extracted, and a comprehensive geological rigidity index is calculated through fusion; according to index threshold values, three types of construction units of a hard rock area, a transition area and a soft soil area are divided, and a hydraulic impact hammer, a rotary drilling rig and a vibration pile sinking unit are matched; and when monitoring that the geological variation exceeds a set amplitude, automatically adjusting the configuration of equipment in an adjacent area, and generating a dynamic resource allocation scheme. According to the invention, precise configuration and intelligent scheduling of equipment under geological driving can be realized, and the efficiency and safety of submarine photovoltaic foundation construction are improved.

The present invention provides a high-energy water-pressure down-the-hole hammer based on impact rotary drilling technology. The structure of the high-energy water-pressure down-the-hole hammer based on impact rotary drilling technology includes an upper sub, a housing, a filter fixing sleeve, a drain valve cover, a fixed valve sleeve, a main valve, a piston hammer, a drill bit, a first support sleeve, a second support sleeve, a first sealing piston, a second sealing piston, a guide sleeve, a stop ring, and a fixed casing. The hammer internally is provided with a first chamber, a second chamber, a third chamber, and a control chamber. The main valve moves up and down along the cylindrical chamber inside the fixed valve sleeve, and the piston hammer moves up and down along the annular groove inside the fixed valve sleeve. Inside the fixed valve sleeve, there are provided a first control flow channel, a second control flow channel, and a third control flow channel that connect the four chambers and the outside. The high-pressure clear water in the first chamber pressurizes and depressurizes the second chamber, the third chamber, and the control chamber through the three control flow channels. The up and down movement of the main valve, the accelerated impact and decelerated braking of the piston hammer are mainly achieved by relying on the static pressure of the high-pressure clear water, driving the piston to do work, performing high-frequency heavy-load impacts on the rock, and improving the pump pressure and drilling efficiency.

The invention relates to the technical field of mineral drilling, in particular to intelligent drilling equipment for coal mine tunneling operation, which comprises a drilling platform, a drilling mechanism, an impact mechanism, a torque increasing mechanism and a guide mechanism, the drilling mechanism is fixedly arranged at one end of the top of the drilling platform, and the impact mechanism is fixedly arranged at one end, far away from the drilling mechanism, of the top of the drilling platform; the torque increasing mechanism is fixedly arranged at the top of the drilling platform and located between the drilling mechanism and the impact mechanism. Through the arrangement of the impact mechanism and the torque increasing mechanism, impact force can be provided for the spline shaft, the drilling efficiency is improved, meanwhile, after the impact hammer is meshed with the impact seat, torque force is generated on the impact seat, the torque force is further transmitted to the spline shaft and the drilling rod through the impact seat, and therefore the drilling rod is helped to get out of trouble, and the problem that the drilling rod is locked is solved.

The invention discloses an impact resistance detection device based on a sports protector. The impact resistance detection device is characterized by comprising a detection mold table, a multidirectional deflection structure arranged around the detection mold table, and an impact structure arranged on the multidirectional deflection platform, wherein the impact structure comprises a guide cylinder facing the detection die table and a piston plate connected in the guide cylinder in an elastic guiding manner, the center of the piston plate is connected with an impact shaft, the impact shaft extends out of the guide cylinder, the tail end of the impact shaft is connected with an impact hammer, the guide cylinder is provided with a winch, and the winch is connected with the impact hammer. The winch is connected with an impact motor through a clutch and connected with the piston plate through a movable pulley. The invention aims to provide an anti-impact detection device based on a sports protector. The device is provided with a multi-directional deflection structure, so that the deflection movement of the sports protector in a plurality of planes can be simulated. Meanwhile, in combination with an impact structure, impact testing is carried out on the to-be-tested protector installed on the detection mold table.

The invention discloses an intelligent geological structure stress field simulation system and a use method thereof.The intelligent geological structure stress field simulation system comprises a geological structure simulation site, an integrated control system is installed on the geological structure simulation site, a supporting frame is installed on the geological structure simulation site, and a geological simulation area is arranged at the front end of the geological structure simulation site; the support frame is provided with a connecting center, one side of the connecting center is provided with an impact mechanism, the other side of the connecting center is provided with a sampling mechanism, the sampling mechanism is internally connected with a linkage mechanism, and the other end of the linkage mechanism is connected with the impact mechanism; the driving requirements of the impact mechanism and the sampling mechanism are integrated through the linkage mechanism, the geological impact hammer and the sampling drill bit can be synchronously driven only through a single driving source (the first driving motor), energy redundancy caused by parallel work of traditional double motors is thoroughly eliminated, and compared with a traditional system, energy consumption is reduced, and the energy utilization efficiency is remarkably improved.

The utility model discloses an impact hammer for testing an explosion-proof product, which comprises a support, symmetrical electromagnets are arranged at two ends of the back of the support, a bearing is arranged in the middle of the support, the bearing is provided with a bearing seat, the support is movably connected with one end of a connecting rod through the bearing, a hammer body is arranged at the other end of the connecting rod, and the hammer body is connected with the support. And a replaceable hammer head in the same direction as the electromagnet is arranged on the hammer body. According to the utility model, the electromagnet is fixed on a vertical tested object to carry out an impact test; the gyroscope sensor monitors the impact energy value of the hammer head, and the display displays the impact value, so that the impact energy of the hammer head can be conveniently and quickly adjusted on site by a user so as to adapt to different materials and test requirements. The impact hammer can be used for testing the surfaces of equipment shells with different roughness and different materials, is convenient to carry, is suitable for non-electric complete equipment which is large in size and weight and cannot be transported to a laboratory for testing, and is very high in practical value.

The utility model relates to the technical field of drop hammer impact experiments, in particular to a drop hammer impact experiment device for pipeline detection, which comprises a pipeline storage box, an impact drop hammer structure is arranged above the pipeline storage box, and a repeated springback prevention structure is mounted on the upper surface of the pipeline storage box. And the repeated springback prevention structure comprises a fixing block, a first electric telescopic rod, a bulletproof baffle, an infrared transmitter and an infrared receiver, a pipeline clamping structure is arranged in the pipeline storage box, and a groove to be hammered and punched is formed in the upper surface of the pipeline storage box. According to the utility model, the falling impact hammer can be prevented from repeatedly and continuously impacting the pipeline to be detected by the falling impact hammer through fixing and clamping after the falling impact hammer is impacted by the repeated springback prevention structure, so that the impact detection result is prevented from being influenced, and the accurate detection value of the pipeline cannot be obtained.

The utility model discloses a silicon carbide raw material crushing processing device, and relates to the field of silicon carbide processing. The silicon carbide raw material crushing processing device comprises a water tank, supporting rods are vertically and fixedly connected to the four corners of the water tank, and the silicon carbide raw material crushing processing device further comprises a top plate fixedly connected to the upper ends of the four supporting rods; the mounting plate is connected to the two supporting rods on the same side; in the crushing process, the impact force of the impact hammer is ingeniously utilized to drive the suction barrel to pump water and automatically spray water to a crushing area through the spraying pipe, dust can be effectively restrained, a large amount of dust is prevented from drifting to the outside, heat generated by mechanical acting and particle friction in the crushing process can be effectively controlled, and the crushing efficiency is improved. And especially when impurities exist in the raw materials, silicon carbide chemical reaction caused by high temperature can be avoided, the performance of silicon carbide is ensured not to be damaged, the product quality is ensured, and a foundation is laid for subsequent high-quality silicon carbide application.

The present application relates to a kind of hammer detection device, including the device support being provided with walking wheel, the device support is guided to move and be equipped with the elastic hammer wheel that can float up and down and can rotate when moving with device support, the device support is provided with the elastic hammer wheel reset spring for keeping elastic hammer wheel and target surface contact, the device support is provided with the intermittent drive mechanism driven by power source, intermittent drive mechanism has the impact hammer for gap impact the elastic hammer wheel.Hammer detection device walks in the process, elastic hammer wheel also walks along target surface, elastic hammer wheel reset spring ensures that elastic hammer wheel is always in contact with target surface, intermittent drive mechanism drives impact hammer and gap impact elastic hammer wheel, elastic hammer wheel is impacted target surface under the impact of impact hammer, and the quality of target surface is judged according to the echo generated by target surface.In the present application, it is not necessary to manually hold impact rod to impact target surface one by one, labor intensity is saved, and it is beneficial to improve work efficiency.

The present invention relates to a construction method for deep-water bored cast-in-place piles, belonging to the technical field of engineering construction. The construction method for deep-water bored cast-in-place piles includes the following steps: transporting the pile: using a construction ship to tow the split casing structure floating on the water surface to the construction position; erecting the pile: rotating one end of the split casing structure downward in a vertical plane until the split casing structure is vertically arranged in the water; driving the pile: using a drop hammer installed on the construction ship to insert the permanent casing of the split casing structure vertically into the bottom soil layer; pouring concrete: pouring concrete into the pouring cavity inside the split casing structure to form a concrete pile; removing the removable casing: separating the removable casing from the permanent casing, and rotating the removable casing upward in a vertical plane until it floats on the water surface to recycle the removable casing. The construction method for deep-water bored cast-in-place piles has a short construction period, the removable casing can be recycled, and the construction cost is low.

The invention discloses a new building material performance actual measurement management device, which belongs to the technical field of material detection, and comprises a test bed for foamed aluminum plate detection, positioning side plates are arranged on two sides of the test bed, a test area is arranged on the test bed, and a support test rack is arranged on the test bed in the test area. A hydraulic push rod is arranged on the supporting test rack, the output end of the hydraulic push rod extends downwards to be connected with a positioning separation sleeve, and an inner impact hammer is connected into the positioning separation sleeve through a force storage limiting piece. The step-by-step conveying mechanism drives a sample to move step by step, multiple times of light transmission detection can be carried out at different positions of a material, a closed shading environment is formed during pressing, external light interference is eliminated, and it is ensured that the light transmission test condition is stable and reliable; a built-in light source (lamp panel) directly corresponds to a bottom illumination intensity detection sensor; the direct and accurate measurement of the illumination transmittance is realized, the light transmission uniformity of the whole foamed aluminum plate is objectively evaluated, and the non-uniform foaming area is effectively identified.

The present invention relates to the technical field of stone aspiration, and specifically discloses a urological stone crushing and aspiration device, which includes an aspiration tube. One end of the aspiration tube is provided with a crushing component, and the free end of the aspiration tube is connected with a negative pressure pump. The crushing component includes a plurality of clamping rods arranged at one end of the aspiration tube. The free end of the clamping rod is a smooth curved surface. An impact component is arranged between any two pairs of oppositely arranged clamping rods, and a bearing component is arranged between any other two pairs of oppositely arranged clamping rods. A cleaning component is arranged in the gap between the remaining adjacent clamping rods; in the present invention, the arranged crushing component can perform secondary crushing on the stones blocked at the aspiration end of the aspiration tube, avoiding the blockage of the aspiration tube by the stones while performing secondary treatment on the stones, thereby improving the aspiration and discharge efficiency of the stones. Drive the clamping plate rotatably clamped at the top of the turntable to rotate to the vertical direction until the impact hammer rotates to align with the through hole opened on the support plate, and drive the telescopic rod to repeatedly expand and contract to enable the impact hammer to repeatedly impact the stones until the stone crushing is completed.

The invention belongs to the technical field of offshore wind power construction, and discloses an offshore wind power platform single pile auxiliary piling device and method.The device comprises a plurality of rock breaking units distributed at the lower end of a single pile at intervals in the circumferential direction, and each rock breaking unit comprises a connecting piece, a power unit and a drill rod; the upper end of the connecting piece is fixed to the lower end of the single pile, and a power mounting cavity is formed in the connecting piece; the power unit is arranged in the power mounting cavity; the upper end of the drill rod is connected with the power unit, and the lower end of the drill rod penetrates out of the lower end of the connecting piece and is provided with a drill bit. The method solves the problems that according to a traditional method that a hydraulic impact hammer is directly used for pile sinking, bearing force eccentricity is likely to happen at the critical point of the hammer encountering a hard stratum, the puncture slippage phenomenon is generated, and certain potential safety hazards are caused to installation of equipment such as a generator set in the later period.

The utility model discloses a sliding impact firewood chopping tool which comprises a guide pipe, an impact hammer, an axe and a handle, the bottom end of the guide pipe is detachably and fixedly connected with the axe, the top of the axe is provided with a stress part, the guide pipe is connected with the impact hammer in a sliding mode, and the impact hammer can impact the stress part. And the impact hammer is fixedly connected with the handle. The utility model relates to the technical field of wood splitting tools, and has the characteristic of reducing manpower.

The aviation sheet metal rivet hammer comprises a motor, a speed reduction conversion gear, a straight tooth piston hammer, an air cylinder body, a hammer head, a hammer angle, a hammer shell and a battery pack, the motor drives the speed reduction conversion gear to conduct reciprocating motion on a straight tooth piston, the straight tooth piston compresses nitrogen in an air cylinder body cavity, and high-pressure compression potential energy and high-pressure potential energy of the straight tooth piston hammer are obtained; and the impact hammer head does work, so that the knocking effect is realized.

The invention discloses a shaft-torsion coupling impact tool which comprises a shell, a power mechanism installed on the upper portion of an inner cavity of the shell, a rotary mandrel with the upper end connected with the power mechanism, a lower connector coaxially matched with the lower end of the rotary mandrel and an impact hammer, the lower end of the shell abuts against the step face of the lower connector, and two longitudinally-distributed columnar protrusions are arranged at the upper end of the lower connector. The cylindrical protrusions are provided with circumferential through grooves, cylindrical grooves are formed between the cylindrical protrusions, the punch hammer is assembled in the cylindrical grooves, the inner side of the punch hammer is provided with transverse through inclined continuous grooves, and the inclined continuous grooves are in butt joint with the circumferential through grooves; two mandrel protrusions matched with the circumferential through groove and the inclined continuous groove are arranged on the outer diameter of the lower section of the rotary mandrel, the inclined continuous groove moves along the mandrel protrusions, and the mandrel protrusions can be clamped in the circumferential through groove. The shaft-torsion coupling impact tool can simply, conveniently, efficiently and simultaneously achieve shaft impact and torsion impact, the drilling speed is increased, the well building period is shortened, and oil and gas resources are economically and efficiently exploited.

The utility model discloses a drop hammer impact test device which comprises a base, a lifting mechanism and a control host, the lifting mechanism is arranged on the base, the control host is electrically connected with the lifting mechanism, and the lifting mechanism comprises a drop hammer guide cylinder, a rope guide cylinder, a lifting motor, a winding drum, a pull rope and an electromagnet. Each of the drop hammer guide cylinder and the rope guide cylinder is formed by detachably connecting a plurality of cylinder bodies, the drop hammer guide cylinder and the rope guide cylinder are fixed on the base, the lifting motor is arranged in the base and connected with the winding drum, one end of the pull rope is fixed and wound on the winding drum, and the other end of the pull rope is connected with the lifting motor. The other end of the pull rope penetrates into the drop hammer guide cylinder along the rope guide cylinder and is fixedly connected with an electromagnet arranged in the drop hammer guide cylinder, an impact hammer is arranged below the electromagnet, and a test bed is arranged in the base. According to the utility model, the drop hammer guide cylinder and the rope guide cylinder are configured into a plurality of sections of detachable cylinder bodies, so that the height can be adjusted according to the floor height of a test site, the device is flexibly suitable for sites with different floor heights, and the application range and the impact height adjusting range are increased.

The invention relates to the technical field of rock-soil drilling and blasting engineering, and discloses an ultrahigh-pressure aerodynamic pulse fracturing-while-drilling device and method.The ultrahigh-pressure aerodynamic pulse fracturing-while-drilling device comprises an aerodynamic pulse generating device used for guiding gas to a high-low pressure gas channel switching inner core; the high-low pressure gas channel switching inner core is located at one end of the aerodynamic pulse generating device, an internal rotation pneumatic rotating impeller is arranged at the end, away from the aerodynamic pulse generating device, of the high-low pressure gas channel switching inner core and used for driving the down-the-hole pneumatic impact hammer device to operate, and the down-the-hole pneumatic impact hammer device is used for impacting and extruding rocks; the conversion joint is used for realizing connection between the internal rotation pneumatic rotating impeller and the down-the-hole pneumatic impact hammer device; the pneumatic pulse pressure relief adjusting sliding sleeve is used for switching gas flow channels with different pressures. The invention provides a coaxially integrated drilling and blasting integrated composite device which is compact in structure, reliable in action and acceptable in cost, so that the tunneling circulation time is shortened, and the operation risk is reduced.

The utility model discloses a high and low temperature drop hammer impact testing device, which comprises a temperature control box, a falling channel, a height control unit and an impact hammer, the falling channel is longitudinally arranged and penetrates through the temperature control box, an impact hole is formed at the penetrating position, the impact hole is provided with an openable / closable plugging piece, an impact platform and an impact piece are arranged in the temperature control box, and the height control unit is connected with the height control unit. The impact platform is located below the falling channel, the impact piece is arranged between the impact platform and the falling channel through the limiting unit, the impact hammer is arranged in the falling channel, and the height control unit penetrates from the top end of the falling channel to be matched with the impact hammer to adjust and control the height of the impact hammer. According to the high and low temperature drop hammer impact test device, the test temperature is controlled through the temperature control box, and the impact hole can be quickly opened through the plugging piece, so that the impact hammer can freely fall to act on the impact piece, and the impact piece impacts a test sample, so that the high temperature or low temperature test of a high polymer material is realized; and the test operation is simple, and the test precision is high.

The utility model discloses a battery pack slide rail structure and impact hammer, including the casing, the casing is equipped with the slide rail that is used for battery pack disassembly and assembly, the slide rail is equipped with the entrance, the slide rail includes mutually fixed connection plastic track and metal track, the plastic track is provided at the entrance and is integrated with the casing, and the metal track is provided with the metal track. The metal track is connected with the plastic track and extends in the direction away from the inlet. According to the battery pack sliding rail structure and the impact hammer, the battery pack is convenient to disassemble and assemble, sliding abrasion is reduced, and the service life of a product is prolonged.