32results about How to "Achieve pre-positioning" patented technology

The invention relates to the technical field of mechanism design, and discloses a hard disk frame module and a server, the hard disk frame module comprises a hard disk frame, the hard disk frame is provided with a hinge end and a free end, the hinge end is used for being rotatably connected with the side wall of a case, and the hard disk frame has a first state in which the free end is turned up relative to the case; in the second state, the free end is arranged in the case; the handle is rotatably arranged at the free end of the hard disk frame, the handle is provided with a first abutting part, the bottom wall of the case and / or the hard disk frame module further comprises a bottom support, and when the first abutting part abuts against the bottom support, the hard disk frame is in a first state. According to the hard disk frame module provided by the embodiment of the invention, devices such as a cable, a plug-in card and a radiator below the hard disk frame module can be maintained under the condition that the hard disk frame does not need to be disassembled, and the defect that in the related technology, the hard disk frame can only be overturned within a small angle range and cannot be overturned can be overcome. And an operator cannot conveniently maintain components such as a mainboard at the bottom of the hard disk frame.

The utility model belongs to the field of valve airtightness detection, and particularly relates to valve airtightness detection equipment, which comprises an operation table, a display assembly is arranged on one side of the operation table, a pre-positioning mechanism is arranged at the top of the operation table, the pre-positioning mechanism comprises a support table, the support table is fixedly connected to the top of the operation table, and the display assembly is arranged on the other side of the operation table. The inner wall of the supporting table is rotationally connected with a rotating rod. By arranging the pre-positioning mechanism, valves with different pipe diameters are supported from the inner sides, transverse supporting force is provided for the valves, and the valves are prevented from displacement during inflation, so that pre-positioning of the valves is achieved, the butt joint accuracy of valve ports and inflation ports is ensured, interference to air pressure is avoided, the accuracy of detection results is ensured, and the detection efficiency is improved. And a sealing plate and a sealing gasket are arranged, so that the third port of the three-way valve is in a sealing state when making contact with the supporting table, positioning of the three-way valve is achieved, blocking of the third port of the three-way valve is achieved, and the utilization rate of resources is increased.

The invention provides a stand column assembly and a steel structure. The stand column assembly comprises a stand column extending in the vertical direction, the stand column is provided with a first penetrating hole and a second penetrating hole, the first penetrating hole transversely penetrates through the stand column in the first direction, and the second penetrating hole transversely penetrates through the stand column in the second direction; the bracket comprises a first connecting piece and a second connecting piece which are fixed in a crossed manner; the first connecting piece penetrates through the first penetrating hole in the first direction. The second connecting piece penetrates through the second penetrating hole in the second direction. The bracket is fixedly connected with the stand column.

The invention discloses container shell welding equipment for chemical pressure container machining, and relates to the technical field of shell welding, and the container shell welding equipment comprises a composite mechanism. According to the container shell welding equipment for chemical pressure container machining, through the design of a composite mechanism, the telescopic rod is used for controlling the welding frame to conduct lifting operation, so that welding materials can be attached conveniently, the application range is expanded, and the operation efficiency is improved; and when the telescopic rod controls the welding frame to ascend and descend, the protection mechanism is attached to the top of the material, so that the effect of presetting a welding spot is achieved, deviation during welding is prevented, the welding quality is improved, and the welding efficiency is improved. Materials are welded in a mechanical rotating mode, and normal operation of material welding is guaranteed.

The utility model discloses an anti-breaking ultra-thin special-shaped liquid crystal display glass drooping edge polishing device which comprises a workbench, a first inner cavity is formed in the workbench, two side plates are fixedly connected to the upper end of the workbench, a top plate is fixedly connected to the upper ends of the two side plates, a motor is installed on the inner top of the first inner cavity, and the top plate is fixedly connected to the inner top of the first inner cavity. And an output shaft of the motor is rotationally connected with the inner top of the first inner cavity, a supporting plate is arranged at the upper end of the workbench, the output shaft of the motor penetrates through the inner top of the first inner cavity and is fixedly connected with the lower end of the supporting plate, and a support is fixedly connected to the right side of the side plate located on the right side. In order to solve the grinding problem, the equipment is provided with the pressing mechanism, the ultrathin special-shaped liquid crystal display glass can be effectively prevented from being broken due to vibration in the grinding process, meanwhile, the positioning mechanism is arranged, the liquid crystal display glass can be pre-positioned, and the pressing mechanism and the supporting plate can be assisted to rotate cooperatively, so that multi-angle grinding is achieved.

The utility model relates to the field of automobile interior manufacturing, in particular to an automobile roof part plastic riveting tool which comprises a bottom frame, a first positioning assembly, a second positioning assembly and a rivet pressing assembly. The first positioning assemblies are installed on the bottom frame, the multiple first positioning assemblies are installed around the circumference of the ceiling, and the first positioning assemblies are attached to the surface of the ceiling. The second positioning assemblies are installed on the first positioning assemblies, one ends of the second positioning assemblies are connected to the ceiling in an inserted mode, and the number of the second positioning assemblies is at least two; the pressing rivet assemblies are installed on the bottom frame and located on one side of the first positioning assembly, and the multiple pressing rivet assemblies are installed around the ceiling. The multiple sets of first positioning assemblies are distributed around the circumference of the ceiling to position the ceiling and limit sliding of the ceiling, the second positioning assemblies are further inserted into the ceiling body, and the problems that the automobile ceiling needs to be subjected to metal plate reset or recovery treatment, the material consumption amount is high and the cost is high due to the fact that the ceiling deviates and pressing rivet pieces are staggered can be solved.

This utility model discloses a mechanical extension structure for a sofa, including a base, a drive unit, two bases for mounting the seat cushion structure, and extension units respectively mounted on the two bases. The extension unit includes a leg assembly, a swing mechanism, and a backrest assembly. The swing mechanism includes a front support rod, a middle connecting rod, a rear support rod, a front swing rod assembly, a connecting rod assembly, and a rear swing rod assembly. One end of the front support rod and one end of the rear support rod are respectively hinged to the middle connecting rod, and the other end of the front support rod and the other end of the rear support rod are respectively hinged to the base. The middle connecting rods of the two swing mechanisms are connected by a synchronizing rod. The front swing rod assembly includes a front main swing rod with one end hinged to the base and a front auxiliary swing rod with one end hinged to the middle connecting rod. The front main swing rod and the front auxiliary swing rod are hinged together. The rear swing rod assembly includes a rear main swing rod with one end hinged to the base and a rear auxiliary swing rod with one end hinged to the middle connecting rod. The rear main swing rod and the rear auxiliary swing rod are hinged together. The front swing rod assembly is connected to the rear swing rod assembly through the connecting rod assembly.

The invention discloses an assembling device of a waste heat boiler, and relates to the technical field of combination machining, the assembling device comprises a frame assembly, a scissor fork type mechanism, an assembling assembly, a screw driving assembly and a driving mechanism, the purpose of assembling an adjustable supporting assembly to the waste heat boiler at a time is achieved by means of the multiple assemblies, and compared with traditional manual welding, the assembling efficiency is improved. The assembly error is reduced, and the assembly efficiency is improved; due to the design of the scissor fork type mechanism, pre-positioning of the adjustable supporting assembly can be achieved, the screw hitting assembly can be guided to the assembling position, and pre-positioning and screw assembling can be conducted synchronously.

The utility model relates to the technical field of thermal insulation boards, and discloses a thermal insulation board structure which comprises a device body, the device body comprises a thermal insulation board main body, splicing assemblies are fixedly installed on the periphery of the thermal insulation board main body, each splicing assembly comprises a connecting frame, and the connecting frames are arranged on any two sides of the thermal insulation board main body. And connecting grooves are formed in the sides, away from the heat preservation plate body, of the connecting frames correspondingly. Through the arrangement of the splicing assembly, by adopting the design, the connecting block on one heat preservation plate body is aligned to the interior of the connecting groove in the other heat preservation plate body to be inserted, the positioning block is pressed downwards, and after the connecting block is inserted into the connecting groove, the positioning block is driven by the elastic force of the compression spring to be ejected into the positioning groove; by means of the design, when the device is used in a combined mode, rapidness and convenience are achieved, and external tools are not needed.

The utility model relates to the technical field of air conditioners, and discloses a decoration strip assembly for an air conditioner, and the decoration strip assembly for the air conditioner comprises a decoration strip which is provided with a guide structure, the guide structure extends in the vertical direction, and the decoration strip is provided with a plurality of buckles; the grid structure is provided with an insertion opening matched with the guide structure and a plurality of clamping grooves matched with the buckles, the number of the clamping grooves is the same as that of the buckles, and the clamping grooves and the buckles are arranged in a one-to-one correspondence mode so that the decoration strip can be connected with the grid structure in a clamped mode; the extension length of the guide structure is larger than the length of the buckle, and / or the plane where the top face of the inserting opening is located is higher than the top face of the clamping groove. By arranging the guide structure and the inserting opening, the decoration strip and the grille structure can be conveniently assembled, and the assembling efficiency is improved. The utility model further discloses the air conditioner.

The utility model relates to the technical field of gas water heaters, in particular to a heat exchanger and a gas water heater. The heat exchanger comprises a heat exchange pipe, a connecting pipe and a temperature control assembly, the end of the connecting pipe is communicated with the end of the heat exchange pipe in an inserted mode and provided with a positioning step, and a clamping ring groove is formed between the end of the heat exchange pipe and the corresponding positioning step. The temperature control assembly comprises a support and a temperature controller installed on the support, the support is provided with a positioning hole and arranged in the clamping ring groove in a sleeved mode through the positioning hole, the end of the connecting pipe penetrates through the positioning hole, and the support is attached to the inner wall of the clamping ring groove. The gas water heater comprises the heat exchanger, the support is positioned and clamped through the clamping ring grooves, pre-positioning of the support during installation is achieved, and the installation precision of the support is improved. The inner wall of the positioning hole is attached to the inner wall of the clamping ring groove, the contact area between the heat exchange tube and the support and the contact area between the connecting tube and the support are increased, the heat transfer efficiency between the heat exchange tube and the support and between the connecting tube and the support is improved, and the measurement accuracy of the temperature controller is improved.

The utility model discloses a kind of fabricated building PC components. Including upper component and lower component, adjacent upper and lower component are connected by bolt. Upper component two ends are equipped with first lug and second groove, lower component end portion is equipped with second lug and first groove, and first lug and first groove, second lug and second groove shape are matched, realize accurate pre-positioning;The surface of the second lug of lower component is equipped with embedded hole, embedded hole is equipped with embedded part containing embedded nut and compression spring, the second groove of upper component is equipped with through-hole, bolt is sequentially connected with embedded nut after passing through through-hole, compression spring is compressed and generates sustained pre-tightening force when tightening bolt. The utility model is embedded by lug and groove to realize quick positioning, and the bolt connection structure of spring pre-tightening is combined to improve connection firmness, effectively solve the problem that existing PC component connection positioning is poor and easy to loosen, convenient to install and suitable for fabricated building construction.

The utility model discloses a retainer punching pre-positioning device, a positioning hole is formed in a retainer, and the pre-positioning device comprises a punching machine, a punching tool, a feeding tool and a pre-positioning mechanism. The punching machine comprises a punching female die and a punch and is used for punching the retainer. A positioning disc and a ratchet motor for driving the positioning disc to rotate are mounted on the punching tool, a positioning rod matched with the positioning hole is arranged on the positioning disc, and the positioning disc is in extrusion fit with the retainer so as to drive the retainer to rotate. A material receiving male die and a motor are installed on the feeding tool, the material receiving male die is matched with the retainer in a magnetic attraction mode, and feeding installation of the retainer is achieved. The pre-positioning mechanism comprises a fixing frame, a telescopic rod installed on the fixing frame and a metal sensor, the metal sensor can detect the position of the positioning hole, the metal sensor is in signal connection with the motor, the retainer can be conveniently rotated to the pre-positioning position, the time for installing the retainer to the positioning disc is saved, and the punching efficiency of the retainer is improved.

The filter comprises a filter body and a filter assembly, the filter assembly is located in the filter body, the filter assembly comprises a net part, a first part and a second part, the net part comprises a net side wall and a net bottom, the net side wall comprises a net end part, and the net end part comprises a first part and a second part. At least part of the net end and the first component are fixedly arranged or arranged in a limiting mode, the second component comprises a second peripheral wall and a connecting part, the first component is fixedly connected with the connecting part, the second peripheral wall extends in the axial direction of the filter, and the free end of the second peripheral wall is provided with a flanging structure in the axial direction of the filter. In the radial direction of the filter, the flanging structure is folded towards the direction far away from the net end part, and at least part of the flanging structure is tightly matched with the inner wall of the filter body. By arranging the flanging structure on the second peripheral wall of the second part, the filter assembly is better positioned in the filter body blank, so that pre-positioning can be realized, subsequent processing, transportation and other procedures are facilitated, close fit between the filter assembly and the inner wall of the filter body can be facilitated, and the filter assembly is more convenient to use. The stability of the filter assembly in the filter body is effectively improved, and the problem of noise caused by shaking of the filter assembly in the use process of the filter is effectively solved.

The utility model discloses a limiting and fixing structure and a reflector positioning structure, and aims to overcome the defects of poor positioning and degree-of-freedom limitation of the limiting and fixing structure of the conventional fastener. The connecting structure comprises a first connecting body and a second connecting body, and the first connecting body comprises an annular column table used for being inserted into a fastener and a plurality of rib plates which are arranged on the outer wall of the annular column table and extend out in the radial direction. The second connecting body comprises a first attaching plate attached to the annular column table, a plurality of second attaching plates used for being attached to the rib plates and an open hole used for being inserted into a fastener and concentric with the annular column table, and when the first connecting body and the second connecting body are fixedly connected, the first connecting body and the second connecting body are concentrically arranged, and the end faces of the first connecting body and the second connecting body are attached. The device can assist in positioning and limit the degree of freedom, and facilitates the accuracy and reliability of installation.

The utility model discloses an Internet of Things radio frequency control intelligent gateway, relates to the technical field of gateways, and aims to solve the technical problem that the fixing stability of a bolt is influenced by direct impact applied to the bolt by quick plugging and unplugging of a gateway wiring. The Internet of Things radio frequency control intelligent gateway comprises a gateway main body, and heat dissipation grooves are formed in the two sides of the outer wall of the gateway main body; the lower ends of the two sides of the outer surface of the gateway body are fixedly connected with fixing plates. A bolt fixed to the wall is arranged in the fixing plate, a connecting ring is movably connected to the outer surface of the bolt, a connecting plate is movably connected to the outer surface of the connecting ring, a contact plate connected through a buffer spring is arranged on the outer side of one end of the connecting plate, and clamping plates are vertically and symmetrically connected to one end of the outer surface of the contact plate. The utility model has the advantages that the direct impact force which impacts the gateway main body by the joint and is transmitted to the bolt through the gateway main body when the joint is quickly plugged and unplugged is reduced, the impact of the bolt on a wall surface bolt hole is further reduced, and the fixed service life of the bolt on a wall is prolonged.

The utility model discloses a kind of multi-mode optical module welding jigs, including base;Circuit board positioning block, the circuit board positioning hole is fixedly installed on base, circuit board positioning slot matched with circuit board is opened on the upper surface of the circuit board positioning block;Lower pressing mechanism, the lower pressing mechanism includes power device, slide and pressing plate, the pressing plate is arranged on circuit board positioning block above parallel to circuit board positioning block, the pressing plate is installed on slide, linear motion is driven by power device slide horizontally, when pressing plate moves to the upper side of circuit board positioning block along the direction of approaching circuit board positioning block with slide, pressing plate vertically moves downward.The utility model realizes the prepositioning of circuit board in horizontal direction, can limit the displacement of circuit board along horizontal direction, reduce the risk of circuit board sliding in welding process;Power device drives slide and pressing plate to automatically complete horizontal motion and pressing action, without manual intervention fixation process, reduce the labor intensity of operator.

The utility model provides a block type iron core press-fitting device, a block type iron core is formed by mutually connecting a plurality of iron core blocks, the press-fitting device comprises a base, a mounting rack, a press, a die sleeve, a positioning strip, a positioning plate, a guide strip and a guide cover, the mounting rack is fixedly mounted on the base, the press is mounted at the upper end of the mounting rack, the die sleeve is mounted below the press, and the positioning plate is mounted on the die sleeve. The die sleeve can be movably arranged and can move up and down along the mounting frame, the positioning strip is embedded and mounted on the inner side of the die sleeve, the positioning strip is matched with a groove in the outer side of the spliced iron core, the positioning plate is slidably mounted on the base, the guide strip is mounted on the positioning plate, the shell is placed on the positioning plate and is roughly positioned by the guide strip, the guide cover is sleeved on the outer side of the shell, and the upper end of the guide cover is propped against the die sleeve. The hoop surrounds the outer side of the split iron core, and the lower end of the split iron core enters the die sleeve and is pressed into the shell by the press. According to the utility model, the pre-positioning of the spliced iron core is realized, the roundness is good, the stress is uniform in the press-fitting process, and the forming effect is good.

The utility model discloses a differential mode and common mode integrated inductor, which relates to the field of inductor structures and comprises a base, a magnetic core is arranged on the base, coils are wound on two sides of the magnetic core, winding directions of the two coils are opposite, two ends of each coil are connected with pins, a plurality of pins are arranged at four corners of the base, and a clamping device is arranged between the base and the magnetic core. The clamping and fixing device comprises at least two clamping plates, the two clamping plates are arranged at the two ends of the base respectively, clamping and fixing pieces are arranged on the clamping plates, clamping and fixing grooves are formed in the two ends of the magnetic core, and the clamping and fixing grooves are matched with the clamping and fixing pieces in a clamping and fixing mode; according to the differential and common mode integrated inductor, the clamping device is arranged between the base and the magnetic core, so that the magnetic core and the coil are kept stable in the welding process, shaking is reduced, and the welding precision and the product stability are improved.

The utility model relates to the technical field of testing devices, in particular to a tester convenient to replace, which mainly comprises an equipment main body, a sound insulation cover arranged on the equipment main body, a wall breaking machine arranged on the equipment main body, a tester main body arranged on the equipment main body, and a replacement assembly arranged on the equipment main body, the replacement assembly comprises a mounting base and a fixing groove, the mounting base is arranged on the equipment body, and an elastic piece is arranged on the mounting base. According to the tester convenient to replace, the fixing plate slides in the direction away from the positioning groove by pulling the connecting plate, a positioning block on a new tester main body is aligned with the positioning groove and clamped into the positioning groove, so that pre-positioning of the tester main body is achieved, at the moment, the fixing plate and the fixing groove are located on the same horizontal line, and replacement is convenient. A worker loosens the connecting plate, and the elastic force of the elastic piece can drive the fixing plate to be clamped into the fixing groove, so that the tester main body is fixed, and the worker can conveniently and quickly replace the tester main body.

The utility model provides a positioning support, a positioning tool and a battery pack, the positioning support comprises a support frame arranged in a lower shell of the battery pack and a lining arranged on the support frame; a positioning pin is arranged on the high-voltage connector, the high-voltage connector is inserted into the lining through the positioning pin, and the supporting frame is supported at the bottom of the high-voltage connector, so that the high-voltage connector is preassembled on the lower shell of the battery pack; the lining is movably arranged on the supporting frame in the radial direction of the lining so that the high-voltage connector can be movably arranged in the horizontal plane, and the lining is provided with a limiting part for limiting the moving area of the lining. According to the positioning support, the supporting frame and the lining are arranged, the structure is simple, pre-positioning of the high-voltage connector on the lower shell is facilitated, the high-voltage connector is prevented from sinking or inclining, in the falling process of the upper shell, the high-voltage connector can adaptively adjust the position of the high-voltage connector in the horizontal plane along with the upper shell, and therefore the high-voltage connector is not prone to falling off. The assembly is convenient.

This utility model provides a ceramic wear-resistant elbow with a steel outer shell, comprising: a steel outer shell body, a base tube disposed on the steel outer shell body, and a ceramic sheet disposed on the inner side of the steel outer shell body; and a locking assembly disposed on the steel outer shell body, the locking assembly including an arc-shaped plate and a fixing ring, the arc-shaped plate being disposed on the ceramic sheet, the fixing ring being disposed on the inner side of the steel outer shell body, the fixing ring having a threaded post, and an arc-shaped groove being disposed on the inner side of the steel outer shell body, with a threaded hole disposed on the inner side of the arc-shaped groove. This utility model achieves fixation by aligning the arc-shaped plate on the ceramic sheet with the arc-shaped groove and sliding it in, then installing the fixing ring at both ends of the inner side of the steel outer shell body, and screwing the threaded post into the mounting hole. This two sets of fixing rings fix the position of the ceramic sheet, thus preventing the ceramic sheet from falling off during transportation.

According to the high-sealing-performance leakproof steel clamp, the side rubber rings are fixedly connected to the left side and the right side of the sealing rubber ring, and the sides, away from the sealing rubber ring, of the side rubber rings extend to the outer side of the groove, so that when the sealing rubber ring and the side rubber rings wrap the outer side of a pipeline flange, the sealing rubber ring and the side rubber rings are not prone to leakage. After being locked and extruded by the clamping hoop a and the clamping hoop b, the clamping hoop a and the clamping hoop b can be more tightly attached to the connecting position, more comprehensive wrapping is achieved, then the sealing performance of pipeline connection is further improved, and the probability of water seepage and leakage after pipeline connection is reduced; and the gasket is arranged to extend into the groove in the hoop b, the gap generated by splicing of the hoop a and the hoop b is shielded by means of the gasket, and extrusion abrasion to the sealing rubber ring caused by locking of the gap in the locking process of the hoop a and the hoop b can be reduced.

The utility model discloses a motor exhaust structure which comprises a valve body, a motor and an air pipe, the valve body is located in the motor and fixed on a stator in the motor, the valve body is provided with an exhaust channel, the air pipe is connected with the valve body and penetrates out of the motor, and two ends of the air pipe are respectively communicated with the exhaust channel and external air. In the working process of the motor, the temperature of the motor rises to cause the air pressure in the motor to rise, air can be discharged from the motor in time through the exhaust channel and the air pipe, and meanwhile, cooling liquid carried by the air can be filtered through the valve body and flows back into the motor through the exhaust channel, so that the motor cooling liquid is prevented from being reduced and the service life of the motor is prolonged. And the working safety of the motor is improved.

The utility model discloses a chip on board (COB) substrate mounting pre-positioning platform, which relates to the technical field of COB substrate mounting, comprises a positioning table arranged below a mounting mechanism, and is characterized by further comprising a material receiving disc rotationally arranged on one side of the positioning table, the material receiving disc is annular and intermittently rotates, a plurality of material receiving grooves arranged around the rotating axis of the material receiving disc are arranged on the material receiving disc, and the material receiving grooves are communicated with the positioning table. A pushing air cylinder is fixedly arranged at the axis position of the material receiving disc, a correcting push plate is arranged at one end of the pushing air cylinder, the pushing air cylinder drives the correcting push plate to penetrate through the material receiving groove provided with the base plate, and in the process, the posture of the base plate is adjusted by means of the correcting push plate. Therefore, the longitudinal position and the posture of the substrate transferred to the positioning table are determined, pre-positioning of the substrate is achieved, the structure is simple and reliable, and hardware cost and follow-up use cost can be reduced.

The utility model relates to the technical field of bus ducts, in particular to an intensive bus duct capable of being quickly positioned, combined and assembled, which mainly comprises a first bus duct, a second bus duct and an assembling component, wherein the first bus duct is provided with a first conducting bar, the first conducting bar is provided with a second conducting bar, and the second conducting bar is provided with a second bus duct; the assembling assembly comprises a spring and a fixing groove, the spring is arranged on the second bus duct, and a fixing block is arranged on the spring. According to the intensive bus duct capable of being quickly positioned, combined and assembled, pre-positioning of the first bus duct body and the second bus duct body is achieved by controlling the positioning rods to be clamped into the positioning grooves, at the moment, the second conducting bar is completely clamped into the first conducting bar, meanwhile, the fixing grooves are aligned with the fixing blocks, and through the elastic force of the springs, the first conducting bar body and the second conducting bar body are fixed. And the two groups of fixing blocks can be driven to penetrate through the positioning grooves to be clamped into the fixing grooves at the same time, so that the first bus duct and the second bus duct can be fixed, and rapid positioning and assembling of the bus duct and the second bus duct can be realized.

The invention relates to the technical field of offshore current conversion, and discloses an upper module and an offshore converter station. The first pile leg penetrates through the platform, and the lower end of the first pile leg abuts against a jacket of the offshore converter station; the lifting device comprises a fixing frame, a telescopic part and two positioning parts, the fixing frame is detachably connected with the platform and arranged on the first pile leg in a sleeving mode, the positioning parts and the first pile leg can be connected or separated, the telescopic part is arranged in a telescopic mode and connected between the two positioning parts, one positioning part is connected with the fixing frame, and the other positioning part and the fixing frame are arranged in a spaced mode. The gravity center of the upper module is low in the transportation process, the gravity center can be increased through lifting in the assembling process, and it is guaranteed that installation meets the requirement.

The utility model discloses a holder punching laser pre-positioning device, a positioning hole is formed in a holder, and the laser pre-positioning device comprises a punching machine, a punching tool, a feeding tool and a laser pre-positioning mechanism. The punching machine comprises a punching female die and a punch and is used for punching the retainer. A positioning disc and a ratchet motor are installed on the punching tool, a positioning rod matched with the positioning hole is arranged on the positioning disc, and the positioning disc is matched with the retainer in an extrusion mode so as to drive the retainer to rotate. A material receiving male die and a motor are installed on the feeding tool, the material receiving male die is matched with the retainer in a magnetic attraction mode, and feeding installation of the retainer is achieved. The laser pre-positioning mechanism comprises an adjusting support and a laser sensor installed on the adjusting support, the laser sensor can detect the position of the positioning hole, the laser sensor is in signal connection with the motor, the retainer can be conveniently rotated to the pre-positioning position, the time for installing the retainer to the positioning disc is saved, and the punching efficiency of the retainer is improved.

The invention discloses an anti-oxidation copper tube terminal which comprises a bobbin and a connecting lug connected to a sealing end, the connecting lug further comprises an open hole used for penetrating and fixing, a guide mechanism is further arranged in the bobbin, and the guide mechanism guides a wire core to bend and deform through movement of the wire core and is embedded in the bobbin. The guide mechanism comprises an annular body of which the edge is connected with the inner wall of the bobbin; and meanwhile, a cambered surface structure arranged on the surface of the annular body is used for guiding the wire core to move. According to the anti-oxidation copper tube terminal, under the condition that it is guaranteed that the size of a bobbin is not large, movement guiding and auxiliary limiting are effectively conducted on a wire core, in cooperation with deformation of the bobbin under pressure application equipment, the bobbin can stably fix the wire core, the heat conduction and electric conduction effects can be guaranteed, and the anti-oxidation copper tube terminal is suitable for the current actual use environment and production level; and a better use effect can be achieved.