43results about How to "Improve support rigidity" patented technology

The invention provides a line-driven soft snakelike robot and a walking control method and system.The line-driven soft snakelike robot is applied to the technical field of robotics.The line-driven soft snakelike robot comprises a tail, a control system module, a front part, a head and other main parts, and the tail and the front part are designed through a plurality of bionic muscle modules; the length of the snakelike robot can be conveniently adjusted by adding the muscle modules, and the muscle modules are made of soft materials, so that the snakelike robot is simple in structure, small in size, good in flexibility and more suitable for moving in a complex or narrow space. Besides, the control system module controls the bionic muscles to stretch or contract through the ropes, so that the snake-shaped robot moves, the tail part and the front part are driven in a distributed manner by adopting different ropes, so that various movement gaits can be realized, and the movement gaits and the movement form of the snake-shaped robot are closer to those of a biological snake.

The invention discloses an intelligent torque sensing harmonic speed reduction joint module which comprises a motor body, a harmonic speed reducer and a torque sensor, and the torque sensor is installed on the motor body and the harmonic speed reducer through six rows of roller type supporting bearings. The supporting bearing structure of the harmonic reducer is redesigned, so that the harmonic reducer is provided with a bearing supporting system with one fixed end and two output ends, the input inner ring and the output outer ring of the metal base of the torque sensor can be axially fixed, and the bearing is a six-row roller type supporting bearing and has extremely high rotating precision; the sensor can bear great axial load and radial load at the same time, has great overturning load rigidity, on one hand, does not affect the connection rigidity with a next section of execution component, and on the other hand, the sensor only bears torque load, the axial load is borne by the bearing, and when the sensor bears axial force, output of torque signals of the sensor is not affected.

The utility model relates to a composite porcelain bushing explosion-proof current transformer, which comprises a high-voltage shell, an explosion-proof bushing, a base and a secondary junction box, the secondary junction box is arranged on the bottom surface of the base, the high-voltage shell is connected and supported on a bottom plate at the upper end of the base through metal flanges adhered to the two ends of the porcelain bushing, a glass fiber reinforced plastic inner bushing is lined in the porcelain bushing, and the explosion-proof bushing is arranged on the bottom plate. Metal flanges are adhered to the two ends of the porcelain sleeve; the glass fiber reinforced plastic inner sleeve is connected with the shielding supporting pipe in a penetrating mode along the same center line, the shielding supporting pipe extends into the high-voltage shell and supports the secondary coil through the coil shielding cylinder, the shielding supporting pipe is located on a bottom plate at the upper end of the base, a lead is arranged in the shielding supporting pipe, and the two ends of the lead are connected into the secondary coil and the secondary junction box respectively. The shielding supporting pipe is made of hard aluminum alloy, and the space between the shielding supporting pipe and the glass fiber reinforced plastic inner sleeve is filled with insulating gas. The device is simple in structure, effectively guarantees the supporting of a high-voltage insulating part, is firm and stable in structure, can prevent the supporting sleeve from being damaged and leaked, and is safe to use.

The present invention discloses a combined rigid test support, the test support comprises a base and a combined seat body, which are symmetrically distributed on the top of the base, used to install a test bearing, and rotatably connected to an aircraft engine rotor through the test bearing; the overall structural design of the present invention is to add two combined seat bodies on the base, so as to achieve effective support for a rotor with a shorter fulcrum span, thereby ensuring that fulcrums with similar distances have effective support points, further increasing the support rigidity of the structure. The test support is positioned and installed by the positioning strip in conjunction with the second positioning groove, and is connected and fastened in conjunction with a T-shaped slide groove and a T-shaped bolt, and is convenient for disassembly and assembly.

The utility model provides an easily expandable assembly type scaffold, including a plurality of support frames of parallel arrangement, the upside of two adjacent support frames is connected through a plurality of treads, the bottom of support frame is detachably equipped with adjusting support and heightening spare, adjusting support and heightening spare cooperation is used for supporting in the working surface as a whole, heightening spare is located between support frame and adjusting support, the top of support frame still is equipped with railing assembly, and the working area interval is formed to the connection of support frame and tread by railing assembly. The utility model is convenient to assemble and disassemble, improves the adaptability of different scenes greatly, can carry out flexible adjustment according to need, guarantees the safe and stable of construction.

The present application provides a physical quantity sensor fixing structure capable of supporting a physical quantity sensor having a detection unit that detects a physical quantity and a lead wire with high support rigidity with respect to a conductive support member to which the lead wire is connected. In a physical quantity sensor fixing structure in which a holder (2) that holds a thermistor (1) is fixed to a plurality of conductive support members (51, 52) to which a plurality of lead wires (11, 12) are respectively connected with respect to a plurality of conductive support members (51, 52) to which a plurality of lead wires (11, 12) are respectively connected, the holder (2) has a main body member (3) that is formed with a housing portion (30) that houses at least a portion of the thermistor (1), and a cover member (4) that covers at least a portion of the housing portion (30).

The invention discloses a head for an embroidery machine, comprising a head main shaft, a plurality of bearing seats, a balancing block, a cantilever body, a needle bar frame provided with a needle bar assembly, a presser foot assembly and a thread take-up rod assembly, a thread take-up rod transmission assembly, a needle bar transmission assembly and a presser foot transmission assembly. The head main shaft is arranged on the cantilever body through the bearing seat, a balancing block is arranged on the head main shaft, the front end of the cantilever body is provided with a needle bar frame through a slideway, the front end of the cantilever body is provided with a color-changing driving mechanism for driving the needle bar frame, the head main shaft drives the thread take-up rod transmission assembly, the needle bar transmission assembly and the presser foot transmission assembly. Compared with the prior art, vibration and noise can be reduced, the use is convenient, and the stability and work efficiency are improved.

The utility model relates to a concentric assembly structure of a pneumatic rotary chuck, which comprises a chuck body used for installing a clamping jaw. The bottom of the rotary table fixing disc is connected with a hollow rotary table, and the upper part of the rotary table fixing disc is coaxially assembled with the bottom of the chuck body; and the positioning cylinder is arranged in the inner hole of the hollow rotary table, the bottom of the positioning cylinder is coaxially assembled with the rotating part of the pneumatic slip ring, and the upper part of the positioning cylinder is connected with the bottom side of the rotary table fixing disc and is coaxially assembled with the rotary table fixing disc. By optimizing the connecting structure, the coaxiality between the upper part and the lower part is improved, the supporting rigidity is better, and the chuck body rotates more stably relative to the pneumatic sliding ring fixing part.

This utility model relates to a support mechanism for a dough mixer mixer, including a dough hopper and a mixing shaft. Openings are respectively provided on the two side plates of the dough hopper. Flanges coaxial with the mixing shaft are connected to the openings on both side plates. One end of the mixing shaft passes through the left flange and is fitted with a connecting drive sprocket at the end. The other end of the mixing shaft passes through the right flange and is fitted with a connecting worm gear at the end. Both flanges have bearing chambers extending into their inner cavities connected by screws at their ends away from the openings. Two deep groove ball bearings are installed in the bearing chamber of the left flange via bearing spacers. Two oppositely arranged tapered roller bearings are installed in the bearing chamber of the right flange via bearing spacers. A threaded channel is provided on the end face of the mixing shaft passing through the right flange, and a bearing cap is connected via an oiling bolt. An oil outlet channel is provided on the mixing shaft, connecting the oil outlet of the oiling bolt to the tapered roller bearings. This utility model facilitates bearing disassembly, maintenance, and replacement, and allows for lubrication via the oiling bolt, extending its service life.

The present invention discloses an exhaust silencer assembly for a high-power engine, comprising a silencer bracket, an exhaust pipe semicircular clamping piece and an L-shaped exhaust pipe support seat; the silencer bracket comprises a support plate, the support plate is provided with a plurality of silencer fixing holes, and the front end thereof is also provided with an exhaust pipe clearance port; the lower left side of the support plate is vertically combined with a support fixing plate, the support fixing plate is provided with a plurality of fixing holes; waist-shaped holes are provided on both sides of the exhaust pipe clearance port, the exhaust pipe semicircular clamping piece is correspondingly distributed on one side of the exhaust pipe clearance port and clamped on the L-shaped exhaust pipe joint, and is tightened to the waist-shaped hole by bolts; the L-shaped exhaust pipe support seat is supported and fixed on the lower part of the L-shaped exhaust pipe joint. The present invention has the advantages of small assembly space occupation, high reliability, simple operation, accurate installation, etc.

The present invention relates to the technical field of outdoor tool shed structures, and in particular to an assembly process of a sealed outdoor tool shed, comprising the following steps: step a, positioning and placing, step b, primary board erection step, step c, secondary board erection step, step d, top board lifting, step e, side wall board erection step f, hanging board erection; modular design of the outdoor tool shed allows the tool shed to be folded for transportation, and after the tool shed is transported to a certain location, a door, a first wall board, a second wall board, a side wall board and a bottom board have been installed and connected to each other, and there is no need to assemble the panels. The tool shed can be assembled by simply folding, thereby simplifying the steps for assembling the tool shed and reducing the difficulty of assembling the tool shed, making the tool shed easier to transport and easier to assemble.

The invention provides a combined type shaft fixing structure of a magnetic drive pump, and belongs to the technical field of magnetic drive pumps. The technical problems that an existing supporting shaft is prone to being corroded by conveying media, and rigid supporting and vibration suppression are difficult to achieve at the same time during high-speed operation are solved. The combined type shaft fixing structure of the magnetic drive pump comprises a shielding cover and an integrally-formed supporting shaft fixedly connected with the shielding cover. The supporting shaft is provided with a fixing section and a supporting section which are perpendicular to each other. The periphery of the supporting section is sleeved with a fixing shaft with an opening in one end. An elastic gasket is arranged among the shielding cover, the supporting shaft and the fixing shaft; and sealing structures are arranged between the fixed section and the shielding cover and around the opening end of the accommodating hole. The invention has the advantages of high support rigidity, capability of completely isolating corrosive media, good sealing reliability, capability of effectively inhibiting vibration and noise, stable operation, long service life and the like.

The utility model discloses an oil pipeline connection anti-loosening fastening device, which relates to the technical field of fastening devices, and comprises a plurality of fasteners, each fastener comprises a U-shaped plate, and the interface of two pipelines is positioned in the middle area of the U-shaped plate along the axial length of the pipelines; the two ends of the first tightening ring are fixedly connected with the two opposite side faces of the U-shaped plate, the two ends of the second tightening ring are fixedly connected to the two adjacent side faces of the U-shaped plate respectively, and the second tightening ring spans and covers the edge of the outer side of the top of the U-shaped plate. A double-ring cooperative anti-deformation mechanism is adopted, the first tightening ring and the second tightening ring form tightening force in the orthogonal direction, when the pipeline connector is axially separated, the double rings resist expansion of the U-shaped plate in real time through elastic restoring force, and compared with a traditional single-ring structure, the anti-loosening capacity is improved, and the anti-loosening effect is good. And the thicknesses and the widths of the U-shaped plate and the first tightening ring are linearly increased in the radial direction, so that a high-stress area close to the pipeline connector obtains higher supporting rigidity.

The application relates to a high-speed stretching controllable spring for bicycle seat adjustment, which comprises a starting top rod, a hollow piston rod, a framework guide, a sealing ring, a pressurized air cavity, a positioning groove, a piston assembly, an oil cavity and a cylinder barrel, the cylinder barrel is divided into the pressurized air cavity and the oil cavity by the positioning groove, the framework guide is arranged at one end of the cylinder barrel, the sealing ring is arranged on one side of the framework guide, the piston assembly is arranged at one end of the oil cavity, one end of the hollow piston rod is connected with the piston assembly, the other end of the hollow piston rod penetrates through the framework guide and extends to the outside of the cylinder barrel, the starting top rod is arranged in the hollow piston rod in a penetrating mode, a piston valve needle is arranged in the piston assembly, and the piston valve needle is connected with the starting top rod; the application solves the problem of slow seat adjustment stretching speed, improves the adjustment response efficiency, reduces the product size, optimizes the installation adaptability, reduces the compression ratio and reduces the operation force change.

A compensation platform of the take-off and landing system comprises a supporting frame, a bottom plate and a telescopic supporting shaft, the upper end of the telescopic supporting shaft is hinged to the supporting frame through an upper hinge joint, and the lower end of the telescopic supporting shaft is hinged to the bottom plate through a lower hinge joint; the clamping mechanism comprises a clamping frame, a first belt moving mechanism and a second belt moving mechanism, the clamping frame is fixedly arranged on the supporting frame, the first belt moving mechanism is arranged at one end of the clamping frame, the second belt moving mechanism is arranged at the other end of the clamping frame, the first belt moving mechanism is provided with a rotatable first clamping belt, and the second belt moving mechanism is provided with a rotatable second clamping belt. The first belt moving mechanism is provided with a rotatable first clamping belt, the first clamping belt is provided with a first clamping deflector rod, the second belt moving mechanism is provided with a rotatable second clamping belt, and the second clamping belt is provided with a second clamping deflector rod. According to the invention, the influence of regular reciprocating harmonic motion of the deck caused by sea waves on the take-off and landing of the unmanned aerial vehicle can be blocked, and the dependence on a complex flight control system and a high-precision sensor is reduced.

The invention discloses an integrated automatic centering device for track beam drilling and an intelligent leveling method of the integrated automatic centering device, and particularly relates to the technical field of engineering machinery track beam machining. The integrated automatic centering device comprises an adjustable machine tool and a first movable supporting base; a variable supporting base is placed below the alignment punching mechanism, the two ends of the variable supporting base are slidably connected with a first movable supporting base and a second movable supporting base correspondingly, and a three-area supporting layout is constructed through the variable supporting base and the first movable supporting base and the second movable supporting base at the two ends. The device is adaptive to long and short track beams, solves the problem that the two ends of the long beam are suspended and are not supported, and provides a basic framework for automatic alignment and leveling. The root problems of deflection deformation caused by suspension of the long beam without a support and precision failure after leveling can be eliminated; special tools do not need to be designed and manufactured for track beams with different lengths and different section special shapes.

The invention relates to the technical field of automobile bodies, in particular to an automobile body in white and an automobile. The body-in-white comprises a top cover assembly, a front wall assembly, a rear wall assembly and a floor assembly, the front wall assembly comprises an air window upper cross beam with the cross section being a closed cross section, the rear wall assembly comprises a rear wall plate, a rear wall upper cross beam and two rear wall vertical beams, and the rear wall plate and the rear wall upper cross beam are fixedly connected and define the closed cross section; the rear wall plate and the rear wall vertical beam are fixedly connected and define a closed section. The top cover assembly comprises a beam frame assembly and a cover plate, the beam frame assembly comprises two top longitudinal beams, and the bottom face of the cover plate and the top longitudinal beams are fixedly connected and define a closed section. The front end of the top longitudinal beam is fixedly connected with the air window upper cross beam, and the rear end of the top longitudinal beam is fixedly connected with the rear wall upper cross beam and one corresponding rear wall vertical beam; the floor assembly comprises a floor mask and two bottom plate frameworks, the floor mask and the two bottom plate frameworks are partially overlapped and jointly define two floor closed sections, and the rear wall vertical beams correspond to the floor closed sections one to one and are fixedly connected with the floor closed sections.

This invention discloses a novel double-layer pipe roof reinforcement device and its implementation method. The pipe roof consists of two layers arranged in a staggered pattern. A movable sleeve is installed inside the pipe roof, and several steel nails that can pass through the pipe roof are fixed on the sleeve and inserted into the soil under grouting pressure. This effectively expands the reinforcement range of the pipe roof, enhances the self-bearing capacity of the surrounding rock, and achieves a significant reinforcement effect. Furthermore, this invention also discloses an implementation method for using this double-layer pipe roof reinforcement device, including: Step 1: Construction preparation; Step 2: Measurement and layout; Step 3: Installing measuring water pipes or sensors and installing impact drilling tools on the pipe roof steel pipes; Step 4: Installing the first section of steel pipe and starting the drilling rig; Step 5: After advancing 0.5m, verifying the construction parameters and adjusting them before continuing drilling; Step 6: Verifying the pipe roof construction parameters and checking the borehole formation; Step 7: Installing grouting pipes at the ends and filling the pipe roof steel pipes with cement grout; Step 8: Sealing the borehole.

The utility model relates to the technical field of swing heads, in particular to a swing head A-axis box body structure which comprises an A-axis box body, the A-axis box body upwards bears a C-axis component, a cavity is formed in the upper portion of the A-axis box body, a left driving stator is fixedly arranged on the left side in the cavity, a right driving stator is fixedly arranged on the right side in the cavity, and the left driving stator and the right driving stator are symmetrically arranged. The A-axis box body is of a wide-end-up structure, good balance can be achieved between box body supporting rigidity and box body light weight, the light-weight A-axis box body structure enables the swing head to have excellent dynamic response performance, the weight of an A axis is effectively reduced, meanwhile, the supporting rigidity and dynamic performance of the swing head are greatly improved, and the swing head is suitable for being used in a large-scale production line. Therefore, the swing head achieves higher precision and better stability, and meanwhile, the swing head has higher supporting rigidity and higher working precision compared with a conventional swing head of a box body structure. The A-axis box body structure is of a double-motor driving structure and a double-rotary-table bearing supporting structure, and the effects of high cutting capacity, high rigidity, high precision and the like are achieved.

The invention provides a novel lead screw supporting device, and belongs to the technical field of lead screw supporting, the novel lead screw supporting device comprises a lead screw, a rapid and stable oil feeding assembly and a supporting adjusting assembly, the rapid and stable oil feeding assembly comprises a plurality of bearings arranged on the outer wall of a connecting rod, the tops of the bearings are provided with connectors, and the tops of the connectors are provided with oil storage boxes; the bearing lubricating oil adding device has the beneficial effects that through the arrangement of the oil pump, when lubricating oil needs to be added into a bearing, a user can conveniently open the oil pump through the controller, so that the oil pump pumps out oil in the oil storage box through the liquid pumping pipe; a small hole connected with the bearing and the conveying pipe is formed in the connecting position of the bearing and the conveying pipe so that oil conveyed by the conveying pipe can enter a ball in the bearing through the small hole, and therefore the purposes that oil can be rapidly and stably conveyed to the bearing, and the bearing is more lubricated in the using process are achieved.

The invention provides a supporting shaft fixing structure of a magnetic drive pump, and belongs to the technical field of magnetic drive pumps. The technical problems that an existing supporting shaft is prone to being corroded by conveying media, sealing reliability is insufficient, and rigid supporting and vibration suppression are difficult to achieve at the same time during high-speed operation are solved. The supporting shaft fixing structure of the magnetic drive pump comprises a shielding cover and an integrally-formed supporting shaft fixedly connected with the shielding cover. The supporting shaft is provided with a fixing section and a supporting section which are perpendicular to each other. The periphery of the supporting section is sleeved with a fixing shaft with an opening in one end. An elastic gasket is arranged among the shielding cover, the supporting shaft and the fixing shaft; and sealing structures are arranged between the fixed section and the shielding cover and around the opening end of the accommodating hole. The invention has the advantages of high support rigidity, capability of completely isolating corrosive media, good sealing reliability, capability of effectively inhibiting vibration and noise, stable operation, long service life and the like.

This invention relates to a V-shaped adjustable support for an internal grinding machine, comprising several mounting seats mounted on the grinding machine. Each mounting seat is equipped with a support fixture and a horizontal adjustment assembly for adjusting the position of the support fixture. The support fixture is mounted on the horizontal adjustment assembly and includes a first support block, a second support block, a support plate, and a clamping member. The first support block is connected to the mounting seat, and the second support block is slidably fitted onto the mounting seat. The mounting seat is equipped with a height adjustment assembly for adjusting the position of the second support block. The first and second support blocks are positioned opposite each other, and supporting inclined surfaces are provided on their opposite sidewalls, forming a V-groove. Cylindrical parts are placed between the two supporting inclined surfaces. The support plate is installed between the first and second support blocks, and the clamping member is mounted on the support plate, serving to abut against the cylindrical parts. This invention improves the grinding accuracy of internal grinding machines.

The invention provides a soft bionic eel robot which is applied to the technical field of robots, the soft bionic eel robot is composed of a head module, a control module and a tail module, all the modules are connected through pin shafts, when the robot moves, the control module is centered, and a tail steering engine controls the tail to move so as to provide thrust, balance and coordination. The front steering engine is responsible for direction control and tension, the joint angle can be set according to needs, the front steering engine fits the rotation characteristic of eel joints and is convenient to control, bones and skin of the front steering engine are made of flexible materials, are soft, have supporting rigidity and light weight and are beneficial to swimming in water, and the soft materials have the compressible characteristic so that the front steering engine has the advantage of shuttling in the complex and narrow environment; the control system is powered by a power battery, winding of a cable or an air pipe is avoided, a head camera senses the environment to achieve movement path adjustment, a controller is in wireless communication with an upper computer, man-machine interaction is facilitated, and the system is suitable for remote control.

The utility model discloses a clamping device which comprises a shell and two finger sliding blocks arranged on the shell, and is characterized in that one side of each finger sliding block is connected with a connecting mechanism on the shell in a sliding manner through a guide rail sliding block; the connecting mechanism comprises a fixed part and a movable part, the fixed part and the movable part are arranged in a spaced mode, guide rail sliding grooves are formed in the opposite faces of the fixed part and the movable part respectively, and the two sides of the guide rail sliding block slide along the two guide rail sliding grooves respectively; the fixed part is fixedly connected with the shell, the movable part is connected with the shell through a fastener and an adjusting part, the adjusting part penetrates through the shell and abuts against the surface of the side, away from the fixed part, of the movable part, and the fastener is used for limiting the movable part on the shell. According to the utility model, the finger rigidity is improved, the assembly convenience is improved, and the application range is also widened.

The utility model discloses an auxiliary supporting tool system for numerical control machining of a cylindrical thin-wall part, relates to the technical field of part machining, and adopts an existing auxiliary supporting device in the market, mechanical-electrical-hydraulic control is combined, the thin-wall part is supported by applying an auxiliary supporting method, and the supporting rigidity of the part is improved. The device can stretch out through a gas circuit and make contact with the surface of a workpiece through spring force, then hydraulic control is utilized, and a supporting rod for auxiliary supporting is locked, so that the supporting effect is achieved; through cooperative arrangement of a supporting sleeve, a supporting rod and a first compression spring, the touch force generated when the supporting rod makes initial contact with a part is small, and the situation that the part reversely deforms due to the fact that too large additional force is generated on the part when the part is supported is avoided; the supporting blocks are independently replaced after being abraded, the supporting blocks with different contact faces can be replaced according to the supporting requirements of different parts, the disassembly and assembly operation is more convenient through the threaded connection mode, and the applicability is higher.

This invention discloses a dual-station steering gear housing machining fixture in the same direction and its usage method. It includes a base with a first machining position on the base. The first machining position has a first mounting surface (higher on the outside, lower on the inside) and a second mounting surface. The first mounting surface is located on the left side of the first machining position, and the second mounting surface is located on the right side. A left-section positioning mechanism is disposed on the first mounting surface for positioning the left half of the steering gear housing. A middle-section support and clamping mechanism is disposed on the left half of the second mounting surface for supporting, clamping, and positioning the middle section of the steering gear housing. A right-section positioning mechanism is disposed on the right half of the second mounting surface for positioning the right half of the steering gear housing. This invention effectively avoids dimensional deviation problems, improves the stability and accuracy of clamping, effectively reduces production costs, significantly reduces the probability of human error, and significantly reduces equipment modification costs.

This invention discloses a cantilevered aero-engine rotor structure and an aero-engine. The cantilevered aero-engine rotor structure includes a main shaft, an intermediate casing, a first bearing housing, a second bearing housing, and a power assembly. The main shaft has a support section and a load section at its two ends along its length, with the power assembly located in the load section. The first bearing housing is installed at the end of the support section furthest from the load section, and the second bearing housing is installed at the end of the support section closest to the load section. The intermediate casing is connected to both the first and second bearing housings, and the first and second bearing housings are joined around the support section to form a bearing cavity. The bearing cavity contains the first and second bearings. The first bearing is installed between the first bearing housing and the main shaft, and the second bearing is installed between the second bearing housing and the main shaft. The cantilevered aero-engine rotor structure provided by this invention adopts a 2-0-0 support scheme, which is simple in structure and has a reasonable and compact layout, simplifying the engine structure and reducing costs.

The invention discloses an embroidery machine, comprising a thread rack, a Y-axis driving device, an active driving device, a needle bar frame provided with a needle bar assembly, a presser foot assembly and a thread take-up rod assembly, a machine base, a thread clamp assembly, a shuttle box assembly, an X-axis driving device and an embroidery frame. The machine base is composed of a base and an L-shaped cantilever arranged on the base, the upper end rear part of the L-shaped cantilever is provided with a thread rack, the front end of the L-shaped cantilever is provided with a needle bar frame through a slideway, the front end of the L-shaped cantilever is provided with a color-changing driving mechanism for driving the needle bar frame, the upper end of the needle bar frame is provided with a thread clamp assembly connected with the thread rack, the machine base is provided with a Y-axis driving device and an active driving device for driving the needle bar assembly, the presser foot assembly and the thread take-up rod assembly, and the Y-axis driving device is provided with an X-axis driving device. Compared with the prior art, the embroidery machine can reduce vibration and noise, is easy to use, and improves stability and work efficiency.

The invention relates to the technical field of precision machining, in particular to an auxiliary supporting device which comprises a supporting disc, a magnetic control table, an air cylinder and magnetizers, the magnetic control table is provided with a magnetism-controllable N pole area and a magnetism-controllable S pole area, each magnetic pole area is provided with an outer magnetizer, and the outer magnetizers do not make contact with one another; an air cylinder is arranged in the structure formed by all the outer magnetizers, inner magnetizers are arranged on the upper surface of the air cylinder, the inner magnetizers make contact with the outer magnetizers one by one, and the inner magnetizers do not make contact with one another; the spherical magnetizer is located on the upper surface of the structure composed of all the inner magnetizers, and the upper surface of the spherical magnetizer is connected with the supporting disc. Locking and loosening of the position of a workpiece are achieved through the magnetic principle, locking and loosening of six degrees of freedom can be achieved at the same time, the six-degree-of-freedom hydraulic floating support has the beneficial effects of being simple in structure, excellent in supporting performance, high in stability and the like, the problem that a traditional hydraulic floating support is short is effectively solved, and stable and safe support is provided for cutting machining of large aluminum alloy structural components.

This application discloses an adaptive ejection recoil, a hydraulic system, and a working method, relating to the field of ejection control. The ejection recoil includes a lower housing, an upper housing, and a floating cylinder assembly. The floating cylinder assembly includes multiple floating cylinders disposed between the lower and upper housings. The hydraulic system of this application includes an oil pump unit, a control valve assembly, an accumulator, and a switching valve. The working method of this application is divided into three steps. During the lifting stage, the different cross-sectional areas of the rod-side and rodless-side chambers of the floating cylinders are used to drive the piston rod to lift the upper housing to a state that is in contact with the external storage ejection box. During the flexible support stage, a structure similar to a hydropneumatic spring is formed between the rodless-side chamber of the floating cylinder and the accumulator, which can adapt to minor unevenness of the ground. During the rigid support stage, the rodless-side chamber of the floating cylinder is disconnected from the accumulator, and the floating cylinder changes from a flexible support state to a rigid locking state, reliably transmitting the recoil force to the ground.