108results about How to "Easy to adjust the tilt angle" patented technology

The invention discloses a cloth feeding mechanism of a sewing machine and belongs to the technical field of sewing machines. By means of the cloth feeding mechanism, the problem that an original cloth feeding mechanism of the sewing machine is narrow in application range is solved. The cloth feeding mechanism of the sewing machine comprises a main shaft which is sleeved with a stitch length eccentric wheel, a first eccentric wheel is arranged on the outer side of the stitch length eccentric wheel, the first eccentric wheel is internally provided with a first sliding groove, the stitch length eccentric wheel can slide in the first eccentric wheel, the sliding direction in which the stitch length eccentric wheel slides in the first eccentric wheel is eccentrically arranged relative to the first eccentric wheel, and a cloth feeding connecting rod is arranged outside the stitch length eccentric wheel in a sleeving mode; a base is arranged on the main shaft in a sleeving mode, and the first eccentric wheel is arranged on the base in a sliding mode in the radial direction of the main shaft; a clutch mechanism is arranged between the base and the main shaft. Due to the arrangement of the clutch mechanism between the base and the main shaft, the inclination angle of the elliptical motion track of a cloth feeding dog can be conveniently adjusted by means of the cloth feeding mechanism.

The invention relates to a teaching tool and particularly relates to a recitation platform for teaching in a senior high school. The invention aims at providing a recitation platform for teaching in the senior high school, which is convenient to move, convenient in platform height and inclination angle regulation, low in manufacturing cost and convenient in use. The recitation platform for teaching in the senior high school comprises a case body, wheels, a first bearing base, a second bearing base, a first rotating shaft, a rocking handle, a first bevel gear, a first screw rod, a second bevel gear, a first nut and the like, wherein the left and right sides of the bottom of the case body are symmetrically connected with the wheels in a bolted connection manner; the first bearing base and the second bearing base are welded at the left side wall of the interior of the case body; and the first bearing base is positioned at the lower side of the second bearing base. The recitation platform for teaching in the senior high school is capable of achieving the effects of convenience in movement, convenience in platform height and inclination angle regulation, low manufacturing cost and convenience in use.

The invention discloses a multi-functional office fitness chair. The multi-functional office fitness chair comprises a pedestal, a bracket, a cushion, a backrest, a headrest, a foot frame, a first ratchet mechanism, a second ratchet mechanism, a first plug pin, a rotating shaft, an adjusting frame, a pulley block, a first rope, a second rope, a third rope, a first handle, a second handle, a first hook, a second hook and a counterweight module, wherein the cushion is arranged at the upper end of the pedestal; the backrest is connected with the back part of the cushion and can rotate around the connection position; the headrest is arranged above the backrest; the foot frame is arranged at the front end of the cushion; the foot frame is hinged with the front end of the cushion; the adjusting frame is used for adjusting the angle between the foot frame and the cushion; the lower end of the foot frame, the counterweight module, the first handle and the second handle are connected through the pulley block, the first rope, the second rope and the third rope; and the first ratchet mechanism and the second ratchet mechanism are arranged on the two sides of the backrest and are used for adjusting the angle of the backrest. The multi-functional office fitness chair is simple in structure and can meet the fitness requirement in an office conveniently.

The invention discloses an anti-toppling outdoor display board and a using method thereof, belongs to the field of display equipment. The anti-toppling outdoor display board comprises a first strut. Asecond supporting column is inserted into the first supporting column. The second supporting column penetrates through the side wall of the upper end of the first supporting column and extends to theoutside. The first supporting column and the second supporting column are each of a hollow structure. The upper end of the second supporting column is fixedly connected with a display board frame. The gravity center of the display board can be lowered, to improve the stability of the display board, prevent the display board from being blown down. The fan blades are rotated by utilizing the blowing force of wind. The fan blades drive the winding drum to wind the pull rope through the driving shaft. The second supporting column retracts into the second supporting column, so that the gravity center of the display board is lowered, and stability is improved. When wind stops, the second supporting column is bounced up through elastic force of the compression spring, the display effect is prevented from being affected. In addition, the first supporting column is assisted and stabilized through the multiple supporting rods, and the stability of the first supporting column is improved.

The invention discloses a floor mopping robot facilitating adjustment of a cleaning range. The floor mopping robot facilitating adjustment of the cleaning range comprises a robot body, wherein two sides of the robot body are fixedly connected with mounting blocks separately; the front surface of each mounting block is fixedly connected with a mechanical arm; opposite sides of the two mechanical arms are fixedly connected with transverse adjusting plates; an adjusting groove is formed in each transverse adjusting plate; the inside of each adjusting groove is slidably connected with an adjusting block; chutes are separately formed in the top and the bottom of the inner wall of each adjusting groove; and the inside of each chute is slidably connected with a sliding block. By improvement of a retractable cylinder, the adjusting blocks can be driven to move in the adjusting grooves, therefore, longitudinal adjusting rods can drive two fixing sleeves to move oppositely, at the moment, the lengths of retractable soft sleeves are convenient to adjust, fur is arranged on the surfaces of the retractable soft sleeves, when the retractable soft sleeves stretch and retract, bristles are distributed unevenly, and are matched with an inner piston, and the stability of the retractable soft sleeves during stretching and retracting can be improved further.

The invention discloses a sweeping robot conveniently adjustable in sweeping range. The sweeping robot comprises a robot body, mounting blocks are fixedly connected to two sides of the robot body respectively, mechanical arms are fixedly connected to front faces of the mounting blocks, transverse adjusting blocks are fixedly connected to opposite sides of the two mechanical arms respectively and provided with adjusting grooves, adjusting blocks are slidably connected in the adjusting grooves, the top and the bottom of the inner wall of each adjusting groove are provided with slide grooves, and sliders are slidably connected in the slide grooves. By improvement of a telescopic cylinder, the adjusting blocks can be driven to move in the adjusting grooves, two fixing sleeves can be driven to move in opposite directions by longitudinal adjusting rods, and thus the lengths of soft retractable sleeves can be adjusted conveniently. Since surfaces of the soft retractable sleeves are provided with soft bristles, when the retractable sleeves stretch and retract, nonuniformity in bristle distribution is avoided, and stability in stretching and retracting of the soft retractable sleeves is further improved by use with internal pistons.

The invention discloses a food processing device capable of improving the raw material crushing quality. The food processing device capable of improving the raw material crushing quality comprises a base. A fixing plate and a control panel are separately fixed to the two sides of the base. A groove is formed in one side of the control panel, and an adjustment mechanism is arranged in the groove. Arotary disc, an installation block and an ejection plate are arranged on the adjustment mechanism. A power mechanism is arranged on the ejection plate and corresponds to the installation block. A crushing barrel is detachably connected to the ejection plate. The food processing device is convenient to move and fix, and the stability of the food processing device is well guaranteed; the positionsof crushing knives can be rapidly adjusted to prevent raw material from adhering to the inner wall of the crushing barrel, and the angle of the crushing barrel can be adjusted to enable the crushing knives to rise or fall during rotation, so that the crushing quality and efficiency are improved; accumulation of the raw materials can be effectively avoided, so that all the raw materials are effectively crushed; and the food processing device can be sealed effectively and is convenient to clean, and the service life of the food processing device is prolonged.

The invention discloses an LCD TV (liquid crystal display television) convenient to install. The LCD TV comprises a base, wherein a circular groove is formed in the upper surface of the base; a ball is connected into the circular groove in a sleeving manner; the surface of the ball is fixedly connected with the bottom end of a support bar; the top end of the support bar penetrates through the circular groove and is fixedly connected with the bottom of a blocking plate above the support bar; a round sleeve is connected onto the blocking plate in a sleeving manner; the support bar is connected into the round sleeve in a sleeving manner; fixing sleeves are fixedly connected with two sides of the surface of the support bar; round blocks are connected into the fixing sleeves in a sleeving manner; one side of each round block is fixedly connected with one end of a telescopic link. By means of improvement of a liquid crystal motor and matching use of an installing plate and transverse inserting bars, the transverse inserting bars can be separated from the installing plate, when pulling plates are loosened, the transverse inserting bars are aligned to clamp slots, and the LCD TV can be installed on the installing plate, so that the LCD TV is convenient to dismount and mount; through matching use of clamp bars and the round sleeve, one end of each clamp bar can be retracted into the round sleeve, and the base can be separated from the LCD TV accordingly.

The invention discloses fish feed throwing equipment for a saline-alkali soil fish pond. The fish feed throwing equipment comprises an air blower and a throwing cylinder, wherein the throwing cylinderis composed of a tail pipe and a head pipe which are communicated with each other; the tail pipe is transversely arranged; the spiral directions of a first spiral blade and a second spiral blade areopposite, so that raw materials located in a feeding tank form circulation flow, feeding is facilitated, and the situation that a discharge port is blocked is avoided; feed is thrown into the fish pond through the action of the air blower, and the amount of the feed falling into the head pipe can be conveniently controlled by controlling the number of intermittent rotation of a rotating wheel; a supporting plate can be stably fixed to the ground through foundation bolts, so that the position of the throwing cylinder is fixed, and shaking is not likely to occur; a rotating handle is rotated bymanpower, when the overlapping number of first magnets and second magnets is different, lifting positions of a moving plate are different, and the inclination angles of the head pipe are also different so that the inclination angles of the head pipe can be conveniently adjusted, and throwing is facilitated.

The invention discloses dust-removing equipment for parkia timoriana medicinal processing, and relates to the technical field of medicinal plant processing. The tilt angle of the vertical face of an air blower can be adjusted conveniently by unscrewing a nut a, the tilt angle in the horizontal direction of the air blower can be adjusted conveniently by unscrewing a nut b, and the air blower can beadjusted to a appropriate blowing angle, and the application range is wide. Dust enters an annular cavity and falls into a sedimentation chamber through a conical bucket, as the conical bucket is ofthe shape of wide on the upper part and narrow on the lower part, dust reflux can be reduced, an impurity discharging pipe can be subjected to impurity discharging by opening a valve, and the operation is simple and convenient. First magnet and the second magnets attract metal impurities in the dust, and recovery is convenient. The dust finally enters into a dust-removing bag, so that the dust-removing bag retains dust, and the dust removing bag can be conveniently disassembled through a clamp, the dust removing bag cleaning is facilitated, and sustainable use is achieved.

The invention belongs to the technical field of examination, and particularly relates to a multi-functional examination bed convenient to adjust for a proctology department. For the problem of a single function and convenient adjustment of the examination bed for the proctology department, the following scheme is proposed that the examination bed comprises a cushion plate, the four corners of thebottom of the cushion plate are connected with supporting legs through fastening bolts, the middle portion of the opposite sides of the supporting legs at the two sides located on the same side of thecushion plate is connected with a same cross brace through fastening bolts, and the middle portions of the tops of the two cross braces are both connected with adjusting hydrocylinders through hinges. According to the examination bed, a first heating resistance plate, a temperature sensor and thermal insulation sponge are arranged, heating and thermal insulating can be carried out on a back plate, the cushion plate and a movable plate to provide a suitable temperature for patients, so that the patients are more comfortable and relaxed, the adjustment is convenient, the examination bed is suitable for the requirements of different patients, the use is convenient and quick, the multifunctionality of the examination bed is achieved, and the examination bed is more convenient and healthful, and the patients do not need to move.

The invention discloses a dental examination supporting device with strong applicability, including seat cushions, the inner cavity of the seat cushion is movably connected with a movable plate, the right side of the movable plate extends to the outside of the seat cushion, the bottom of the seat cushion is movably connected with a vertical bar, the bottom of the vertical bar is sleeved with a sleeve, the bottom of the vertical bar is fixedly connected with a spring, the bottom of the spring is fixedly connected with the bottom of the sleeve inner cavity, the bottom of the sleeve is fixedly connected with a bottom plate, and four corners of the bottom plate are fixedly connected with legs. Through the cooperation of the vertical rod, the spring, the sleeve and the bottom plate, the dentalinspection support device has good shock absorption performance, the invention improves the comfort and is convenient for people to use. The invention is cooperated by the groove, the fixing rod, thesliding sleeve, the connecting block, the electric telescopic rod and the connecting plate, and is convenient to adjust the inclination angle of the leaning plate, to adjust the sleeping posture of the patient, to facilitate the doctor to examine the mouth of the patient, and to improve the applicability of the dental examination support device.

The invention relates to a folding computer desk, in particular to a notebook folding computer desk which can be used on a bed and is convenient to carry. The proposal solves the problems that the computer desk occupies excessive space outside of the bed when being used on the bed and is not convenient to carry and the like. The folding computer desk adopts a hinge connecting structure of a top frame and an upright column and the upright column and a bottom frame and then is configured with oblique fasteners, thus having stable structure; and due to the arrangement of a four bar linkage and an inner toothed plate, the folding computer desk can fast fold and stretch, is convenient to adjust the angle of inclination and has great convenience of use and carry.

The invention discloses a bearing unit of a baby carrier. The bearing unit comprises a body, a seat part, a back support part, a connecting part and a support frame, wherein the seat part, the back support part and the connecting part are molded by using a first hardness material and a second hardness material in a mold; and the support frame is connected with the connecting part so as to support the body. The bearing unit of the baby carrier has the advantages that: 1, the bearing unit of the baby carrier made of materials having different hardness can ensure seating comfort and certain intensity; 2, the support frame is provided with an inclination angle adjusting and positioning mechanism capable of adjusting the angle of the bearing unit, so that a baby can lie for resting at an appropriate angle; and 3, a releasing mechanism is arranged on the support frame and linked with a positioning piece, so that the clamping of the positioning piece on a positioning part can be released temporarily and the inclination angle of the body is convenient to adjust.

The invention discloses a sales rack for vegetables which is convenient to adjust the angle, which comprises a base, the upper surface of the base is fixedly connected with the bottom end of a pillar, a circular groove is opened in the pillar, and a circular groove is sleeved in the circular groove. Block, the top of the round block is fixedly connected with the bottom end of the pole, the top of the pole passes through the through hole opened on the top of the inner wall of the circular groove and is fixedly connected with the bottom of the placement plate above the pillar, the inner wall of the through hole Both sides are provided with a through groove, and the top and bottom of the inner wall of the through groove are connected by a rotating shaft, and a pulley is sleeved on the rotating shaft. In the present invention, through the improvement of the clamping rod, when the two pull plates are pulled backwards, the clamping rod can be separated from the round block. At this time, the placing plate can be rotated normally. Next, the clamping rod can be overlapped on the round block again, so that the round block can drive the placement plate through the support rod to stably maintain the adjusted state.

The invention discloses a buttress supporting structure for assembling an I-shaped steel rock-filled gabion. The structure comprises two stand-column I-shaped steel structures which are vertically arranged in parallel. The bottom ends of the two stand-column I-shaped steel structures are connected through a connecting I-shaped steel structure, and the side surfaces of the bottom ends of the two stand-column I-shaped steel structures are provided with fixed I-shaped steel structures which are correspondingly perpendicular to the stand-column I-shaped steel structures and the connecting I-shaped steel structures. The upper surface of the end, away from the corresponding stand-column I-shaped steel structures, of each fixed I-shaped steel structure is provided with a movable I-shaped steel structure. The two sides of the end, away from the corresponding stand-column I-shaped steel structures, of each fixed I-shaped steel structure are both provided with connecting rods. The end part of each connecting rod is fixedly connected with a sliding block. The sliding blocks are arranged in grooves of the two sides of the movable I-shaped steel structures. The side surface of each sliding block is connected with a first fastening bolt in a threaded mode. According to the buttress supporting structure for assembling the I-shaped steel rock-filled gabion, an oblique angle of a rib plate I-shaped steel structure is convenient to adjust, assembly is convenient, the construction speed is high, the intensity is high, pollution is avoided, repeatable utilization is achieved, the interior of the structure is piled up by adopting rock-filled gabions, the water permeability is good, and the structure is beneficial to water draining.

The invention relates to the field of bean curd making technology and discloses a multifunctional bean dregs filter unit. The multifunctional bean dregs filter unit comprises a fixed frame. A rotary mechanism is arranged on an upper panel of the fixed frame. The rotary mechanism comprises a rotating shaft and a driving mechanism. One end of the rotating shaft is successively connected to an angular adjustment mechanism and a filter vat. The angular adjustment mechanism is used for adjusting the angle of inclination of the filter vat. During filtration of bean dregs, the rotary mechanism drivesthe filter vat to rotate, thus achieving mechanical filtration of bean dregs. Then, time and labor are both saved, and labor cost is saved. The filter vat extends out of the upper panel. During rotation of the filter vat, a container can be placed below the filter vat to collect soya-bean milk obtained after the filtration. The angular adjustment mechanism can adjust the angle of the filter vat according to needs. During the filtration, the filter vat's opening is inclined upwards, thus avoiding the soya-bean milk from leaking out of the filter vat's opening. After the filtration, the filtervat's opening is inclined downwards, which is convenient to clean bean dregs.

The invention provides a nursing sickbed for patients with a back tumor, and relates to the field of medical instruments. The nursing sickbed for the patients with the back tumor comprises a bed body,supporting legs, universal wheels, baffle plates, a supporting rod, a mattress, a back cushion, a through hole, a sealing cover, a transmission mechanism, a protection mechanism, a control button, apositioning hole, a liquid collecting barrel and a lifting mechanism, wherein top ends of the supporting legs are respectively and fixedly connected with two ends of a bottom surface of the bed body,the top ends of the universal wheels are respectively and fixedly connected with bottom ends of the supporting legs, and bottoms of opposite surfaces of two baffle plates are respectively and fixedlyconnected with two side surfaces of the bed body. By the adoption of the nursing sickbed for the patients with the back tumor, an inclination angle of the back cushion can be quickly adjusted at first, so that the comfort level of the nursing sickbed for the patients is improved; the patients can conveniently get on and off a bed, and the safety of the bed body is improved; and the patients can conveniently go to the toilet, so that the nursing sickbed is convenient to use.

The invention discloses a dust-proof keyboard with adjustable inclination angle, which comprises a keyboard body and a dust cover. An upper end surface of that keyboard body is connected with a dust cover, a supporting leg is arranged on the dust plate, and an anti-skid pad is bonded on the surface of the semi-circular arc plate; A screw rod is fixedly and fixedly connected to the inner side of the supporting leg, the screw rod penetrates the supporting frame, a clamping groove is arranged at the top plate of the supporting frame, a nut is nested in the clamping groove, and the nut is threadably connected with the screw rod. The invention effectively prevents dust from falling into keys and key gaps when the keyboard is not in use by providing a reversible dust cover. the supporting leg mounted on that dust cover and adjustable in height is arranged to facilitate the adjustment of the tilt angle of the keyboard; The dust cover is fixed by a pressing-type clamping fixing mechanism, so as to improve the stability of the dust cover and the supporting leg; By providing a rubber pad housed in the dust cover, the elbow support can be withdrawn to improve the feeling of use.

The invention discloses a detection temperature-controllable cooler. The cooler comprises a base; a motor is fixedly connected with the bottom of the inner wall of the base; a fan is fixedly connectedwith an output shaft of the motor; fixed columns are fixedly connected with two sides of the bottom of the inner wall of the base; movable blocks are glidingly connected with the surfaces of the twofixed columns; support rods are fixedly connected with the surfaces of the movable blocks; and one ends of the support rods penetrate through the base and extend out of the base. The invention relatesto the technical field of coolers. The detection temperature-controllable cooler has the effect that the motor is controlled to work according to air temperature and temperature of a notebook computer so as to cool the notebook computer, so that energy waste caused by continuous work of the cooler is avoided, the service life of the cooler is prolonged, benefit is brought to save the energy and protect the environment, convenience is brought to adjust an inclination angle of a placing net, and the height and angle of the notebook computer can be changed; and the detection temperature-controllable cooler is wide in application range and can be conveniently used by users with different heights.

The invention relates to the technical field of projection equipment, in particular to a vehicle-mounted projector with a fine adjustment mechanism and a using method thereof. The vehicle-mounted projector comprises a vehicle-mounted projector body and a base, a sound playing hole is fixedly connected to the left side of the front end face of the vehicle-mounted projector body, a shielding deviceis arranged at the front side of the sound playing hole, and the outer side of the shielding device is fixedly connected with the vehicle-mounted projector body. A lens is fixedly connected to the right side of the front end face of the vehicle-mounted projector body, a supporting device is rotatably connected to the lower end face of the vehicle-mounted projector body, a rotating shaft is arranged on the lower end face of the supporting device, and the base is arranged at the outer side of the rotating shaft. According to the vehicle-mounted projector, by arranging a rotating ball, the supporting shaft, a sliding clamping plate, the supporting rod, the sliding block, a telescopic spring and a limiting rod, the vehicle-mounted projector can be conveniently disassembled and assembled through the rotating ball and the supporting rod, the overall disassembly is not needed, and great convenience is achieved; the rotating ball is spherical, so that it is guaranteed that the vehicle-mountedprojector can rotate, and the inclination angle of the vehicle-mounted projector can be conveniently adjusted.

The invention discloses a rolling cutter assembly, and relates to the field of food and medicine package equipment. The rolling cutter assembly comprises a rolling cutter arm, an adjusting lever, a rolling cutter shaft and a rolling cutter, wherein the rolling cutter is rotationally arranged at one end of the rolling cutter shaft. The rolling cutter assembly is characterized in that the adjusting lever is in an L shape, the other end of the rolling cutter shaft is connected with a horizontal section of the adjusting lever, the lower part of the rolling cutter arm is provided with a groove, a vertical section of the adjusting lever is rotationally connected into the groove at the lower part of the rolling cutter arm by a pin shaft, the lower part of the rolling cutter arm is connected with two vertical adjusting bolts by threads along the vertical direction, and the thread ends of the two adjusting bolts respectively extend into the groove at the lower part of the rolling cutter arm, and are jacked against the side wall of the adjusting lever. The rolling cutter assembly has the advantages that the structure is simple, and the inclining angle of the rolling cutter is conveniently adjusted; under the condition of no replacement of the rolling cutter, the rolling cutter can be tightly attached to a closing position of a bottle opening, a cap is rolled, and the good sealing effect of a bottle body is guaranteed.

The invention relates to an internal medical department diagnosis and treatment bed and an installation method. The internal medical department diagnosis and treatment bed comprises a bed top frame, wherein the bed top frame is rectangular, and the bed top frame is provided with a left bed beam and a right bed beam; the left bed beam is provided with a left through opening, and the left through opening is connected with a left magnetic sleeve; the left magnetic sleeve is connected with a left iron supporting plate, and a left limit plate is connected to the outer side of the left iron supporting plate; the inner side of the left iron supporting plate supports the left side of a bed board; the right bed beam is provided with a right through opening, the right through opening is connected with a right magnetic sleeve, and the right magnetic sleeve is connected with a right iron supporting plate; a right limiting plate is connected to the outside of the right iron supporting plate, and the inner side of the right iron supporting plate supports the right side of the bed board; and the bed board is connected to a soft mattress. The internal medical department diagnosis and treatment bedis used for internal medical department diagnosis and treatment.

The invention discloses a loading bearing unit of a carrying tool for babies, which comprises a body, a seat part, a back supporting part, a connecting part and a supporting framework, wherein the seat part is formed by molding a material with a first hardness and a material with a second hardness in a die, and the supporting framework is connected with the connecting part to support the body. The loading bearing unit of the carrying tool for babies has the following advantages that integrated molding is adopted; the load bearing unit of the carrying tool for babies is formed by using a bi-color injection molding, multi-color injection molding or die extruding method; the seat part and the supporting part are made of softer materials, and a load bearing part is made of a material with higher strength, so that the riding comfort can be guaranteed, and a certain strength can also be guaranteed; an inclination angle adjusting and positioning mechanism is arranged on the supporting framework and can be used for adjusting the angle of the load bearing unit, thus being beneficial to babies to lie and take a rest at a proper angle; and a releasing mechanism is arranged on the supporting framework for linking a positioning piece and can be used for temporarily relieving the clamping of the positioning piece to a positioning part, thus being convenient for adjusting the inclination angle of the body.

The invention discloses a cloth feeding mechanism of a sewing machine and belongs to the technical field of sewing machines. By means of the cloth feeding mechanism, the problem that an original cloth feeding mechanism of the sewing machine is narrow in application range is solved. The cloth feeding mechanism of the sewing machine comprises a main shaft which is sleeved with a stitch length eccentric wheel, a first eccentric wheel is arranged on the outer side of the stitch length eccentric wheel, the first eccentric wheel is internally provided with a first sliding groove, the stitch length eccentric wheel can slide in the first eccentric wheel, the sliding direction in which the stitch length eccentric wheel slides in the first eccentric wheel is eccentrically arranged relative to the first eccentric wheel, and a cloth feeding connecting rod is arranged outside the stitch length eccentric wheel in a sleeving mode; a base is arranged on the main shaft in a sleeving mode, and the first eccentric wheel is arranged on the base in a sliding mode in the radial direction of the main shaft; a clutch mechanism is arranged between the base and the main shaft. Due to the arrangement of the clutch mechanism between the base and the main shaft, the inclination angle of the elliptical motion track of a cloth feeding dog can be conveniently adjusted by means of the cloth feeding mechanism.

The invention provides an automatic field water and fertilizer application system. The automatic field water and fertilizer application system comprises a water and fertilizer storage tank and a waterand fertilizer deep application device, wherein the water and fertilizer deep application device is provided with a slidable water and fertilizer pipe and an ejection mechanism for ejecting the waterand fertilizer pipe, so that the water and fertilizer pipe can be ejected to be inserted into soil and pulled out of the soil; a pump is arranged on the water and fertilizer storage tank; an outlet of the pump communicates with the water and fertilizer pipe through a water and fertilizer hose; wheels are arranged at the bottom of the water and fertilizer storage tank, the water and fertilizer storage tank is provided with a connecting mechanism used for being detachably connected with a vehicle frame with a power device, and the water and fertilizer deep application device is detachably connected with the vehicle frame with the power device through a water and fertilizer component base. Through the arrangement of the water and fertilizer storage tank and the water and fertilizer deep application device, automatic operation of inserting and pulling out the water and fertilizer pipe into soil and automatic operation of injecting water and fertilizer into the soil can be achieved. An externally-hung connection structure is adopted, the vehicle frame of an existing rotary cultivator can be fully utilized, and the use cost is greatly reduced.

The invention discloses an injection classified dropping device with an inclined sliding rail mechanism, and relates to the technical field of injection classified dropping. The injection classified dropping device with the inclined sliding rail mechanism comprises four first electric push rods; a supporting plate is arranged on the upper sides of the four first electric push rods; a storage barrel is fixed to the upper side of the supporting plate; a circular bottom plate is arranged in the storage barrel; a material placing mechanism is arranged on the upper side of the circular bottom plate; a partition plate is arranged on the upper side of the circular bottom plate in a sliding fit mode; a fixing plate is fixed to the upper side of the circular bottom plate; a buffer mechanism is arranged on one side of the fixing plate; and foam cotton is fixed to one side of the buffer mechanism. According to the injection classified dropping device with the inclined sliding rail mechanism, through the four first electric push rods arranged on the lower side of the supporting plate, the inclination angle of the circular bottom plate can be conveniently adjusted, medicine injections can conveniently enter a circular limiting groove, the medicine injections entering the circular limiting groove can be limited to a certain degree through the partition plate in sliding fit; and the classification speed is prevented from being affected due to blockage caused by direct contact between medicine injections and the circular limiting groove.

The invention discloses a screw-drive adjusting type multi-angle cutting device for range hood processing. By rotating a rotary handle, a screw rod drives a screw rod seat to slide; through the function of a connecting rod, an inclination angle of a vertical surface of a cutting tool is conveniently adjusted; after a nut is loosened, a screw-thread column can slide along an arc-shaped through groove, so that an inclination angle of a horizontal surface of the cutting tool is conveniently adjusted; due to the function of an axial flow fan, a screw impeller rotates to drive an arc-shaped brush plate to rotate, so that bristles rotate, dust intercepted on the lower surface of an arc-shaped filter screen is brushed away, and most dust falls onto the lower side wall body of a purification box so as to be conveniently discharged through a discharge pipe; and by adopting a photocatalysis technology, an oxidation function with high photocatalysis is utilized for high-efficiently oxidizing harmful substances including ammonia, sulfide and organic volatile gas in gas into harmless substances.