133results about How to "Precise Disassembly" patented technology

The invention discloses a chassis battery change system for electric passenger cars. The chassis battery change system comprises a rapid change robot, a battery change platform, a transfer platform, a background monitoring system, a stacking machine and a charging frame, wherein the transfer platform, the stacking machine and the charging frame are arranged on one side of the battery change platform; the rapid change robot is arranged between the battery change platform and the transfer platform; an electric passenger car is capable of passing through the battery change platform; a locking mechanism which corresponds to a battery box supported by the rapid change robot is arranged on the electric passenger car; and the background monitoring system is connected with the rapid change robot and the stacking machine respectively through an industrial Ethernet. At the same time, the invention also discloses a using method of the system. A mechanical positioning mechanism of the battery change platform is simple, correct in positioning and low in manufacturing cost; a hydraulic lifting mechanism is used in the rapid change robot, so that the whole change process is reliable and stable, the size of the change equipment is decreased effectively and the actual occupied area of the change system is saved; and the transfer platform is used as a battery change interaction link between the rapid change robot and the stacking machine, so that the time spent by the battery change is further shortened.

The invention discloses a radiating structure for an independent graphics card of a computer. The radiating structure comprises a mounting structure for the independent graphics card and a radiator. The radiator which is flat integrally is matched with the independent graphics card and is provided with a front surface and a back surface, a heat conduction base is arranged on the front surface of the integrally flat radiator, a main body of the radiator comprises radiating fins, and the radiating fins are parallelly arrayed at intervals. An outward smooth surface of the heat conduction base flatly clings to a GPU (graphics processing unit) chip of the independent graphics card, the back surface of the radiator is in contact with a partition plate surface in a host case of the computer in a parallelly clinging manner, a space of a host of the computer is halved by a partition plate, computer hardware including a mainboard, hard disks, power boxes and a fan are parallelly mounted on a surface or two surfaces of the partition plate or are mounted on the single surface or the two surfaces of the partition plate in a parallelly clinging contact manner, and the independent graphics card is parallel to the partition plate. The invention further discloses the mounting fixing structure for the independent graphics card of the computer. The radiating structure and the mounting fixing structure have the advantages that various independent graphics cards can be compatibly arranged in the ultrathin case, the effective radiating area of the independent graphics card can be enlarged, and the radiating efficiency of the independent graphics card can be enhanced.

The super fastening kit of the present invention includes bolts, nuts, and shaft locks, the bolts include screw rods, and the shaft lock is a polyhedron whose shape matches the shape of the nuts. A circular movement limiting mechanism that rotates with the nut and an axial movement limiting mechanism that prevents the shaft lock from falling off from the nut, and the shaft lock is limited by the circumferential movement limiting mechanism and the axial movement The mechanism is sleeved on the nut and the screw at the same time, and is fixed to each other and integrated. The product structure of the present invention is reasonable in design, easy to process, and achieves better anti-loosening effects. At the same time, it saves material costs and processing costs, and improves the work efficiency of workers. Reduce the workload of workers, and can also be used as an anti-theft connection.

The invention relates to a shape memory alloy energy consumption combined column with a resetting function and a mounting method thereof and belongs to the technical field of structural projects. Theshape memory alloy energy consumption combined column comprises a foundation, assembled square steel pipe columns, I-shaped columns, H-shaped steel beams, anti-buckling supports and connecting short beams, T-shaped splicing plates are fixed to the joint area parts of the assembled square steel pipe columns, and grooves are formed in the upper portions and the lower protons of the T-shaped splicingplates correspondingly. The T-shaped splicing plates and the assembled square steel pipe columns are connected by self-locking bolts, the joint area parts of the I-shaped columns are connected by resetting joints, and the middle of each layer of each I-shaped column is connected by three splicing plates through bolts. Shape memory alloy long bolts are arranged between the upper flanges and the lowerflanges of the I-shaped columns, one ends of L-shaped connecting plates are fixedly connected with the connecting short beams, the other ends of the L-shaped connecting plates are fixedly connectedwith the H-shaped steel beams, and ribbed plates are welded to the corresponding positions of the columns. The anti-buckling supports between the assembled square steel pipe columns and the I-shapedcolumns are connected in a combined mode. According to the shape memory alloy energy consumption combined column with the resetting function and the mounting method thereof, the effects that completeassembling is conducted on a construction site, energy dissipating can be achieved in an earthquake, and the after-earthquake restoring capacity is improved are achieved.

The invention relates to the technical field of a battery recovery accessory device, in particular to a dismounting device for power battery recovery. The dismounting work efficiency is improved; theuse reliability is improved; the dismounting is precise; the damage cannot be caused on metal inside retired batteries; the inside metal and the like are enabled to be normally recovered and reused; meanwhile, the condition that toxic gas and waste liquid are generated in the power battery dismounting process and cause injury on workers can be prevented; the safety is improved; the dismounting device comprises a dismounting box and a transmission device; a work cavity is arranged in the dismounting box; a laser cutter is arranged on the inner top wall of the work cavity; a laser head is arranged at the bottom output end of the laser cutter; the left end and the right end of the dismounting box are respectively provided with an inlet and an outlet; the right end of the transmission device enters a work cavity from an inlet formed in the left end of the dismounting box and extends out to the right end of the dismounting box from the outlet; a plurality of groups of fixing devices are arranged on the top end of the transmission device at equal intervals; the dismounting device also comprises a waste gas box, a waste liquid box, a communicating pipe and an exhaust fan.

The invention discloses a computer host case which comprises a computer host case shell and computer hardware. The computer hardware comprises a main board, a hard disk or power supply box and a corresponding cooler. The computer host case is characterized in that a partition plate is arranged in the computer host case shell and divides the cavity of the computer host case shell into two parts, the main board is fixed to the plate face on one side of the partition plate, the plate face on the side is the front face of the partition plate, the hard disk or power supply box is arranged on the plate face on the other side of the partition plate, the plate face on the side is the back face of the partition plate, the main board and the front face of the partition plate are parallel or are attached in parallel, the hard disk or power supply box and the back face of the partition plate are parallel or are attached in parallel, the front face or back face of the partition plate or the interior of the partition plate is provided with a circuit, and a partition plate socket for being matched and connected with the computer hardware is arranged on the partition plate and connected with the circuit on the partition plate. The thickness of the case can be effectively reduced, and the computer host case is small in size, light in weight, suitable for designing an ultra-thin case and beneficial to re-layout of the computer hardware.

The invention provides a device and method for suspending a linear motor of a railway vehicle. A positioning mode that fastening bolts pass through laterally positioned bolts is adopted and a double fastening means for resisting vertical loosening and lateral rotation of the fastening bolts is realized, so that the phenomenon that abnormal connection of the fastening bolts influences the reliability of mounting the linear motor can be avoided. The device comprises a support box which is arranged at an axle end part of each wheel set by a bearing and used for suspending a lateral suspension beam of the linear motor, and the end part of the lateral suspension beam is supported on the support box elastically by rubber nodes. The top of the support box is provided with a pair of convex mounting seats; a group of fastening bolts is used for vertically mounting the rubber nodes at two ends of the lateral suspension beam on the mounting seats respectively; positioning nuts are laterally inserted into the mounting seats and provided with internal threaded holes through which the fastening bolts vertically pass; and the fastening bolts are used for vertically mounting the rubber nodes on the mounting seats of the support box, thus vertically positioning the end parts of the lateral suspension beam from top to bottom.

The invention provides a device and method for suspension and height adjustment of a linear motor of a railway vehicle. Adjusting shims are used to vertically adjust an anchor point at the end part of a horizontal suspension beam so as to accurately control and adjust the vertical gap of the linear motor relative to a railway sensory board of the linear motor, thus being beneficial to stably and efficiently running the vehicle. The suspension device comprises a support box which is mounted on an inboard shaft of a wheel set by a bearing and used for suspending a horizontal suspension beam of the linear motor; and the horizontal suspension beam end part is supported on the support box elastically by rubber nodes. The top of the support box is provided with a pair of convex mounting seats; a group of fastening and locking devices is used for vertically mounting the rubber nodes at two ends of the horizontal suspension beam on the mounting seats respectively; the adjusting shims are arranged between mounting poles of the rubber nodes and the mounting seats of the support box; fastening bolts are used to vertically mount the rubber nodes on the mounting seats of the support box; and the thicknesses of the adjusting shims are combined to adjust the vertical suspension and vertical height of the linear motor.

The disclosed compression clamp for sheet-form material comprises: a fixing plate (4) fixed on upper / lower clamp body (7), a pad plate (1) paralleled to the inclined plane (21) of trapezoidal slot (20) in (7), a sphenoid slider (15) arranged in (20), a guide block (5) with one end fixed in the guide slot (23) of (15) and another end slide connected to (23). This invention frees to clamp self weight, and has high precision and efficiency.

The invention relates to the technical field of structural engineering, in particular to a steel plate energy-consuming composite combined column capable of bearing primary and secondary force and aninstallation method. The steel plate energy-consuming composite combined column comprises an A-type column, B-type columns, C-type columns, hinged energy-consuming connecting members and interlayer connecting bearing platforms. Square steel tubes of the A-type column and the B-type columns are formed by splicing mortise and tenon joint structures; the A-type column is combined with the B-type columns and the C-type columns by the hinged energy-consuming connecting members; the interlayers of the A-type column, the B-type columns and the C-type columns are combined by the interlayer connectingbearing platforms; and clamping grooves of hinge shafts are formed in the outer walls of the A-type column and the B-type columns and the middle parts of the flanges of the C-type columns. The hingedenergy-consuming connecting members are connected with the two types of columns outside a plane between the columns through the hinge shafts and are rotated into the plane with the hinge shafts as rotating shafts, and energy-consuming hinge plates are connected through fixed connecting plates and high-strength bolts; and fiber concrete is poured into the gaps of the A-type column and poured into the B-type columns. The bearing of primary and secondary force is realized, and energy consumption by primary and secondary force step by step and improvement of post-earthquake recovery capability arerealized.

The invention provides an engine docking device and an engine docking method, and belongs to the technical field of assembly. The docking device mainly comprises a frame, a hanging beam component, a main support, an auxiliary support, an adjusting device, a mandrel and wheels. The engine docking method comprises the following steps: rotating the beam part of the hanging beam component to one side, and lifting an engine onto the main support and the auxiliary support; rotating the beam back to the upper side of the engine, and fastening the engine on the hanging beam component; then pushing the engine to a missile cabin segment port, and lowering or detaching the auxiliary support; propelling the engine docking device to convey the engine to an installation position in the cabin segment, and installing and fixing the engine; separating the engine from a hanging frame, lowering the main support and retreating the engine docking device; the detachment process of the engine is contrary. By adopting the device and the method, a docking process of the missile engine is simple and convenient to operate and is safe and reliable, and the engine can be docked and detached quickly and accurately.

A hinge structure for quickly disassembling a damper comprises a movable hinge cup, a connection arm, a fixing base and a rocker arm, the movable hinge cup is connected with a furniture door plate, the connection arm and the fixing base are connected with a furniture wall plate, and a rocker arm is used for connecting the movable hinge cup with the connection arm. The damper and a swinging part are arranged on the connection arm, one end of the damper is coupled with the swinging part, fixing parts made of metal materials are arranged on the connection arm fixedly, locating notches are formed in the fixing parts, and the other end of the damper is located in the locating notches in a rotatable mode. By means of the improvement, the hinge structure for quickly disassembling the damper has the advantage of being simple and reasonable in structure, reliable in performance, fast and convenient to assemble and disassemble, accurate in locating, simple in manufacturing process, low in production cost, connection strength and rigidity, long in service life and the like. In addition, the practicality is high.

The invention discloses a torque sensor mounting structure. The torque sensor mounting structure comprises a housing, a load end sleeve flange, a shaft coupling, a flange torque sensor, a transition disk, a transition disk end sleeve flange, bearing pedestals, sleeves, double circular nuts, a shaft torque sensor, bearings, a shaft end back-up ring and flat keys. The housing comprises a support and an upper cover casing, wherein two bulges are formed at the joint of the support and the upper cover casing; and a connection screwed hole is formed in each bulge. An output shaft of a motor is connected with one end of the flange torque sensor through the shaft coupling, and the other end of the flange torque sensor is connected with the transition disk end sleeve flange through the transition disk; the transition disk end sleeve sensor is connected with one end of the shaft torque sensor through one of the two flat keys; and the other end of the shaft torque sensor is connected with the load end sleeve flange through the other flat key. For the torque sensor mounting structure, the rigidity and the operation stability of the mounting structure are improved, and the mounting structure can prevent mounting and dismounting operation of a current flange torque sensor so that the efficiency is improved.

The invention discloses a loading assembly comprising a supporting platform, the supporting platform is sealed and assembled with the bottom of a pressurized chamber, the pressurized chamber is assembled with the supporting platform, a liquid guiding hole is connected with one end of an oil returning pipe through a liquid guiding tube, the outlet of an oil returning pump is communicated with a third reversing valve inlet, a liquid collecting tank is inclined from right to left, the supporting platform is fixed on a supporting top plate, a sample is loaded into the pressurized chamber, a pressing block is also installed at the bottom of a loading cylinder, the pressing block is fixed on the top of a pressing shaft, the bottom of the pressing shaft is tightly assembled with the tightening inclined slope of a wedge-shaped block; the wedge-shaped block is provided with a loading threaded hole, the loading threaded hole is screwed and assembled with a screw by a thread; the two ends of thescrew are respectively provided with connecting blocks, the connecting blocks are installed in a connecting groove, the connecting groove is disposed at one end of a driving shaft, and the other end of the driving shaft passes through a fixing plate and is fixed and assembled with a turntable. The present invention also discloses an experimental device using the above described loading assembly for testing rock disturbance-relaxation. Applied disturbance force can be calculated according to the rotation angle of the turntable.

The invention relates to the technical field of disassembling of electronic equipment, and particularly relates to a disassembling jig. The disassembling jig comprises a bearing assembly, a clamping assembly and a cover plate assembly, the bearing assembly is used for bearing a carrier containing a to-be-disassembled part, the clamping assembly is movably connected with the bearing assembly, the cover plate assembly is rotatably connected with the bearing assembly, and when the cover plate assembly and the bearing assembly are in a locked state, the cover plate assembly and the clamping assembly jointly clamp the carrier and the to-be-disassembled part. When an operator disassembles the to-be-disassembled part in the carrier, the carrier and the to-be-disassembled part can be prevented from shaking so that the carrier and the to-be-disassembled part are stably fixed, and accurate disassembling of the to-be-disassembled part is guaranteed.

The invention discloses a mounting and dismounting device for a wind driven generator coupler. The mounting and dismounting device comprises a carrying platform mechanism and a height adjustment mechanism, wherein the carrying platform mechanism is used for carrying the coupler to be mounted or dismounted; and the height adjustment mechanism is fixed below the carrying platform mechanism and used for adjusting the level of the carrying platform mechanism to facilitate mounting or dismounting of the coupler. The device has the advantages that the device is simple and compact in structure and convenient to use and operate, and can reduce working strength and risks, and the couplers in different specifications can be quickly and precisely mounted or dismounted.

The invention discloses an experimental device for testing disturbance-relaxation effect of rocks. The device comprises a control shell, wherein a first partition plate is fixed to the top surface ofthe control shell; fixed plates are separately fixed to two sides of the first partition plate, and a loading assembly and an uploading assembly are successively arranged between the two fixed platesup and down, a chute is formed in the inner side of each fixed plate; a second induction plate is fixed to the inner side of each fixed plate, and a second stroke switch is fixed to the second induction plate; a first stroke switch is arranged on a fourth loading plate, and when a third loading plate descends to a preset position, the third loading plate triggers the first stroke switch, so that alifting motor stops rotating. The device can achieve tri-axis pressurization and confining pressure application to a test sample, so that the shear strength and the compressive strength of the test sample can be tested and the confining pressure environment of the rocks can be simulated. The device can apply disturbance through a weight, and can calculate the disturbance force applied according to the rotating angle of a rotating disc, so that the experimental researches are facilitated well.

The invention discloses a method for detecting the chamfer depth and angle of a valve seat hole. The method comprises the following steps: firstly, setting a standard cone which can be adapted to thechamfer of the standard valve seat hole, and forming an upper limit detection plane and a lower limit detection plane at the top end of the standard cone; secondly, coating the cone surface of the standard cone with a layer of dye; thirdly, inserting the standard cone into the valve seat hole to detect whether the vertex of the chamfer of the valve seat hole is between the upper limit detection plane and the lower limit detection plane or not; and finally, rotating the standard cone to detect whether the dye area of a chamfer cone on the standard cone meets the requirements or not. The invention also provides a test tool for detecting the chamfer depth and angle of the valve seat hole. The detection method and test tool for detecting the chamfer depth and angle of the valve seat hole havethe advantages of rapid detection of depths and angles, integral detection of depths and angles, high specificity, convenience in operation, accurate and clear detection results and high detection accuracy.

The invention discloses an electrical control cabinet capable of conveniently replacing and repairing elements. The electrical control cabinet comprises a control cabinet, wherein an adjusting structure is connected in the control cabinet, a bottom plate is connected to the control cabinet, a moving block is connected to the bottom end of the adjusting structure, a slideway is arranged in the control cabinet, a disassembling and assembling structure is detachably connected to the mounting structure, an element is connected to the side wall of one side of the disassembling and assembling structure, a torsion spring is connected to the disassembling and assembling structure, a limiting plate is connected to the moving block, a positioning structure is arranged on the side wall of the end, close to the moving block, of the adjusting structure, and a lifting column is connected into the positioning structure. According to the invention, the lifting column is pulled out of the groove through the shifting plate, the adjusting structure is pulled out of the box body through the handle, and after the adjusting structure and the mounting structure are pulled out of the box body, the dismounting and assembling structure is pulled out of the transverse plate forcibly, the inserting column clamped in the clamping groove expands outwards when stressed, and the clamping plate fixedly connected with the inserting column rotates along the torsion spring when stressed, so that dismounting is completed.

The invention provides a battery replacing system based on multi-axis linkage, which comprises a battery stacking library, a plurality of multi-axis linkage lifting devices, a battery replacing robot and a battery dismounting and mounting device, and is characterized in that the battery stacking library is used for storing batteries of different specifications and charging the batteries; the multiple multi-axis linkage lifting devices are arranged on one side of the battery stacking library, and the multiple multi-axis linkage lifting devices are matched with one another to be used for lifting different types of battery replacing vehicles and adjusting the poses of the lifted battery replacing vehicles; the battery replacing robot is arranged between the battery stacking library and the battery replacing vehicle and is used for taking and placing full-power batteries in the battery stacking library and under-power batteries in the battery replacing vehicle; the battery disassembling and assembling device is arranged on the battery replacing robot and used for disassembling an under-power battery in the battery replacing vehicle and installing a full-power battery on the battery replacing vehicle. According to the battery replacing system, the under-power battery in the battery replacing vehicle can be accurately disassembled, the full-power battery can be accurately installed on the battery replacing vehicle, and rapid replacement of vehicles of different specifications and different types of batteries is achieved.

The invention relates to a plugging tool for dismounting a MCX bent connector, comprising a shell 1 in tetrahedronal structure, wherein an upper end of the shell is in thread connection with a handle 5, a centre is provided with a thread through hole, two sides of a lower end of the thread through hole are in platy cuboid structures, two reeds 3 are fixed at two sides of the shell 1 through the thread, two claw heads 2 are clamped between the reeds 3 and the shell, a square through hole of the platy cuboid structure is mounted at the lower end of the shell, and an end cap 6 is disposed at the lower end of the thread through hole in the shell. The plugging tool for dismounting the MCX bent connector is small in occupied space and high in plugging efficiency.

The invention discloses an accurate-positioning injection mould with a self-lubricating guiding column. The accurate-positioning injection mould with the self-lubricating guiding column comprises a front mould body and a rear mould body. The rear mould body comprises a rear mould plate, a rear mould fixing plate, a rear mould support and a rear mould base. An ejector plate is movably disposed between the rear mould fixing plate and the rear mould base. The guiding column is disposed in the ejector plate. A plurality of annular grooves are formed in the external circumference of the guiding column of the ejector plate. Solid lubricants are inlaid into the annular grooves. A plurality of accurate-positioning guiding rods are disposed between a front mould plate and the rear mould plate. During usage of the injection mould, the guiding column makes friction of the solid lubricants and a mould base occur through friction heat, and an excellent condition of oil and powder coexistence lubrication is formed, so that the ejector plate guiding column is protected against abrasion, the solid lubrication property is permanent, the hardness and abrasion resistance of the ejector plate guiding column are effectively improved, and the service life is greatly prolonged; and the accurate-positioning guiding rods of the injection mould are simple in structure, convenient to dismantle, accurate in positioning and capable of being applied and popularized.

The invention discloses a paving machine. The paving machine comprises a machine frame and an ironing board, and the ironing board is arranged on the rear of the machine frame; the paving machine also comprises a lifting device for lifting the ironing board, and the lifting device can be detachably mounted on the side faces or the rear part of the machine frame. The lifting device of the paving machine is preferably mounted on the rear part or the side faces, so that stress and installation of the lifting device are more facilitated, a lifting device position on the paving machine is relatively easily positioned, and precision control of an installation position and an angle during lifting of the ironing board is facilitated, so as to accurately and rapidly assemble and disassemble the ironing board, and improve the operation efficiency; and in addition, customers do not need to pay high cost for leasing lifting equipment, moreover, the lifting operation can be implemented at any time and without waiting, and thus the efficiency of assembly and disassembly of the ironing board is greatly improved.

In order to provide alarming technique of sensing cable to replace high voltage protection electrical grid, following measures are utilized: signal of stress variation is collected by using double cords sensing cable 2 having shielding layer with impedance adaptive terminal being remote connected; signal processing is carried out by band pass amplification circuit 3 with reshaping and filtering functions and circuit 4 for recognizing mode of invasion. Alarming is through the coordinated control circuit for alarming signals, and protection circuit 6 for guarding against demolition is utilized. The method possesses advantages of high sensitivity, and interference immunity, as well as features of reasonable structure, easy of installation, and coordinated alarming for following actions of invader: climbing, treading, cutting, pulling, tearing down and striking.

The present invention involves assembly mobile flood prevention walls, including columns and baffles. The columns include both ends and intermediate columns.There are slots on the two side walls. There are water intake holes on the inner wall of the columns at both ends, and water intake holes are opened on the two side walls of the middle column.The two ends are inserted in the slot of the two adjacent columns.The invention trapezoidal concave structure combination connection method makes the structure better.When the flood enters the baffle from the bottom up layer by layer, increase the weight of the baffle through the water weight to further improve the overall stability of the structure.The height of the lower baffle is higher than the height of the upper baffle, and the base or the original dam and the underlying baffle are provided with grooves and sealing water stops to prevent seepage and water and preventing water.The socket -type connection between the column and the base makes the installation and disassembly of the flood prevention wall very fast, which greatly improves the work efficiency.

The invention discloses a high-efficiency automatic disassembling device for a mobile phone fixing screw, and belongs to the technical field of mobile phone disassembling. The device solves the problem of low manual disassembling efficiency, the device is technically characterized by comprising a disassembling mechanism, a moving mechanism, a knife shaft connecting mechanism and a clamping mechanism, the disassembling mechanism comprises a first gear box and a second gear box, the first gear box and the second gear box are connected with a coupling through shafts, a first rotating shaft is arranged in the first gear box, the first rotating shaft is a power input shaft, the first rotating shaft is rotationally connected with the first gear box through a second bearing, the second bearing isarranged on the first gear box through interference fit, a motor seat is arranged on an outer wall of the right side of the first gear box, a disassembling motor is arranged on the motor seat, a first bevel gear is welded to an output end of the disassembling motor, the first bevel gear is meshed with a second bevel gear at the first rotating shaft end, power is input into the whole disassemblingmechanism, and the disassembling mechanism is driven to work through gear transmission. According to the device, the automation degree is high, the efficiency is high, compared with traditional manual disassembling, disassembling is more accurate, and the subsequent disassembling cost is also reduced.

The invention discloses a method for enhancing drilling torque and wear resistance of a patio drill stem and a patio drill stem.4330VMOD alloy steel used as a patio drill stem material is subjected to heat treatment to enhance the comprehensive mechanical properties of the patio drill stem, thereby satisfying the technical requirements of the ever-developing drilling technique for high torque and high wear resistance of the patio drill stem. The patio drill stem is processed into a large-diameter thick-wall integral drill stem, thereby preventing the drill stem from bending and rupture due to the external force in the drilling process, prolonging the service life of the drill stem and enhancing the production efficiency of the mining enterprises. One end of the patio drill stem is provided with a three-end outer cone thread, and the other end is provided with a three-end inner cone thread; the part adjacent to the outer thread is provided with two square upper clamping grooves to ensure the accurate and quick buckling of the drill stem and the small screwing number; and the patio drill stem is quick and accurate to mount and demount, and enhances the efficiency. A plurality of drill stem components can be connected within the allowable strength range to reach the required length.