183results about How to "Precise height adjustment" patented technology

Disclosed is a discrete flexible die. An upper discrete die is connected with an upper sider of a press, a lower discrete die is combined with a base of the press and comprises a lower die support, a top supporting plate of the lower die support is assembled with hydraulic tensioning sleeves, oil supply of each hydraulic tensioning sleeves is realized through an oil pipe, a piezometer is mounted at the tail end of each row of the oil pipes, a punch is inserted into a middle round hole of each hydraulic tensioning sleeve, and an electric push rod is mounted below each punch; the upper discrete die comprises an upper die support, hydraulic tensioning sleeves are mounted on a middle supporting plate of the upper die support, oil supply of each hydraulic tensioning sleeve is realized through an oil pipe, and a piezometer is mounted at the tail end of each row of the oil pipes. Shape adjusting is realized by adopting the electric push rods controlled by a circuit, and the die punches are locked through the hydraulic tensioning sleeves after shape adjusting is completed; the punches is high in bearing capacity, thereby being capable of used for plate forming and part supporting; the whole discrete flexible die is simple in structure and low in manufacturing cost; two implementable schemes are provided for curved surface continuation after forming, and the discrete flexible die is high in efficiency, low in cost and free of environmental pollution.

The invention discloses a multi-ground-clearance self-steering intelligent sprayer and a control method. The sprayer comprises a vehicle platform, two self-steering traveling mechanisms, a controllable lifting spraying device, a gasoline power generation and supply device and a control device, and each self-steering traveling mechanism is connected with the vehicle platform by adopting a rotation structure; the controllable lifting spraying device is fixed at the tail of the vehicle platform and comprises a sprayer lifting mechanism, a spraying rod device and a drug mixing device, the spraying rod device is arranged on the sprayer lifting mechanism and connected with the drug mixing device, and a spraying rod can move up and down along with traction of the sprayer lifting mechanism; the drug mixing device is fixed in the middle of the vehicle platform and provides drug to spraying equipment for spraying, the gasoline power generation and supply device is fixed on the front portion of the vehicle platform and serves as a stable voltage power source of the equipment, and the control device is connected with driving equipment, a control motor and multiple sensors. Four hub motors are controlled by the control device to realize self-steering of wheels at differential speeds, and the sprayer is high in control accuracy and small in turning radius.

A bicycle saddle and handlebar height adjustment device comprising a tubular element (5) provided with means (2) for its connection to said saddle (3) and presenting a portion (4) to cooperate with a support element (6, 7) for said tubular element, said support element being associated with locking means (8) for said first tubular element which maintain the tubular element (5) in a determined position relative to the support element (6, 7), in which alignment means (16) are present between said support element (6, 7) and said tubular element (5) to maintain a determined angular position between the tubular element (5) and the support element (6, 7), said locking means (8) comprising a threaded (132A) ring (132) rotatably fixed to one from among the support element (6, 7) and the tubular element (5), the other from among the support element (6, 7) and the tubular element (5) presenting a thread (5A) cooperating with the thread (132A) of said ring (132). rotation of said ring (132) causing continuous movement of one element relative to the other.

The invention provides a multipurpose adjustable busbar welding support assembly which comprises multiple support units. Each support unit comprises a supporting plate, an adjusting pipe fitting, a supporting column and a base, wherein supporting frames are arranged on two sides of the supporting plate, movable rollers are fixed to the supporting frames, at least two pin holes are further formed in the width direction of the supporting plate, pins are movably connected in the pin holes, the supporting plate is connected with the supporting column through the adjusting pipe fitting, and the lower end of the supporting column is fixed to the base. The multipurpose adjustable busbar welding support assembly is suitable for tubular and rectangular busbar welding, a busbar to be welded can be stably arranged on the support assembly, the heights of the busbar and the support assembly are kept equal, arrangement time is effectively saved, and working efficiency is improved.

The invention discloses a spray boom assembly and a lifting spraying device comprising the same. A multi-ground-clearance self-steering smart sprayer comprises a vehicle platform, the controllable lifting spraying device, a gasoline power generation and supply device and a control device, wherein two self-steering travelling mechanisms are connected with the vehicle platform through rotating structures respectively; the controllable lifting spraying device is fixed at the tail part of the vehicle platform and comprises a sprayer lifting mechanism, the spray boom assembly and a pesticide mixing device, the spray boom assembly is arranged on the sprayer lifting mechanism and connected with the pesticide mixing device, and a spray boom can move up and down under drawing of the sprayer lifting mechanism; the pesticide mixing device is fixed in the middle of a frame platform and used for supplying pesticides to a sprayer for spraying; the gasoline power generation and supply device is fixed at the front part of the frame platform and taken as a steady voltage power supply of equipment; the control device is connected with a drive device, a control motor and multiple sensors. According to the equipment, the control device controls four wheel hub motors to realize self-steering based on wheel differential, besides, the control precision is high, and the turning radius is small.

The invention relates to the technical field of fitness equipment, and discloses an apparatus for comprehensively training arm strength and abdominal muscles. The apparatus comprises a base, a supporting cylinder is fixedly installed at one side of the top of the base, an armrest rod is fixedly installed at the other side of the top of the base, the other end of the armrest rod is fixedly connected with the top of one side of the supporting cylinder, and a supporting spring is fixedly connected to the bottom of an inner cavity of the supporting cylinder. By means of the apparatus for comprehensively training the arm strength and abdominal muscles, through the adjustment of the height and the angle, a user bends down to place the abdomen over a sponge pad with a short distance, the dual hands tightly hold a lifting yoke rod, magnetic repulsion force is applied to a permanent magnet through a first electromagnet, so that the lifting yoke rod is stressed downwards, which is equal to the fact that gravity is applied to the hands of the user, and the user keeps the position of the lifting yoke rod unchanged so that arm load bearing and vertical bending training can be conducted. Throughmachine assisting, the user more scientifically controls the bending degree, and precisely controls the unbending and bending degree of the arms, and thus an excellent training effect is achieved.

An intelligent aluminum cutting device comprises a base, wherein a slide rail is arranged on the upper portion of the base, a sliding plate is arranged on the upper portion of the slide rail and can slide on the slide rail, a protection plate is arranged on the upper portion of the sliding plate, a nut is arranged on one side of the sliding plate, a motor frame is arranged at one end of one side of the base, a stepping motor is arranged on the motor frame, a threaded rod is arranged on an output shaft of the stepping motor and matched with the nut, and a support is installed on one side of the middle of the base. By means of the intelligent aluminum cutting device, the positions of cut aluminum parts can be adjusted in the aluminum part cutting process. The stepping motor can drive the sliding plate to freely slide on the slide rail through the cooperation of a lead screw and the nut, and therefore the positions of the aluminum parts can be adjusted when the aluminum parts are cut through the intelligent aluminum cutting device, and the aluminum parts can be accurately cut through the intelligent aluminum cutting device.

The invention discloses a novel probe-positioning tin soldering device. The novel probe-positioning tin soldering device comprises a device body, a control assembly, a first tin soldering structure assembly, a second tin soldering structure assembly, a first positioning mechanism, a second positioning mechanism and a tray mechanism. The first tin soldering structure assembly and the second tin soldering structure assembly can both move along the X axis, the Y axis and the Z axis relative to the device body. A sliding rail is arranged on the device body. The first tin soldering structure assembly comprises a first tin soldering needle, a second tin soldering needle, a first CCD camera and a plurality of first elastic positioning probes. The second positioning mechanism comprises a second CCD camera, a second tin soldering positioning reference panel and a plurality of second elastic positioning probes. The novel probe-positioning tin soldering device is high in work efficiency, capable of accurately regulating the height of a product to be subjected to tin soldering, high in accuracy, and capable of running in a full automatic manner, accurately positioning tin soldering positions of electronic products and meeting the requirement of laser welding. The invention further discloses a novel probe-positioning tin soldering method.

The invention discloses a T-shaped beam casting special mold and a using method thereof, and relates to the technical field of T-shaped beam manufacturing. The T-shaped beam casting special die comprises a guide rail, wherein a walking trolley is arranged on the sliding rail in a sliding mode, a left mold and a right mold are symmetrically arranged on the walking trolley, the left mold comprises frames and panels connected to the inner side of the frames, the walking trolley is provided with mold guide devices which are positioned at the outer side ends of the two frames and provided with high-stroke spaces, the outer side ends of the two frames are provided with overturning type demolding mechanisms, an automatic slope adjusting mechanism and a locking mechanism are arranged on each frame, the tops of the automatic slope adjusting mechanisms and the tops of the locking mechanisms are hinged to the bottom of rotatable parts of the panels, combined adjusting mechanisms for adjusting theheight of the left mold and the bottom of the right mold are arranged at the bottom of the left mold and the bottom of the right mold, and supporting columns which are convenient to assemble and disassemble are arranged on the outer sides of the tops of the two frames, and during use, the supporting columns are subjected to mold closing and grouting, demoulding. The T-shaped beam casting specialmold has the advantages of being complete in function and good in T-shaped beam forming quality.

The invention relates to a vibration isolator for a rail traffic floating slab, comprising a lower support, a rubber vibration reduction ring, a height adjusting screw, a height adjusting nut and a coupling flange. The lower support is disposed on a base, a concave groove is disposed on the lower support, and the rubber vibration reduction ring is disposed in the concave groove. The head of the height adjusting screw is disposed in the vibration reduction ring, the screw extends upwards and has male thread. The height adjusting nut is connected with the height adjusting screw by female thread thereof. The coupling flange is mounted on the height adjusting nut and is connected with the floating slab to make the vibration isolator to support the floating slab. The vibration reduction effect of the invented vibration isolator is better than that of the traditional metal spring vibration isolator, and can satisfied road bed height adjustment request better.

The invention relates to a stripping device of a cable insulation shielding layer. A knife rest with adjustable height is connected with the upper part of a support in a sliding way, a knife installation wheel is arranged on the knife rest and can be used for annularly cutting a cable to be cut, two rollers are arranged at the lower part of the support and are in correspondence to the knife installation wheel, the rolling directions of the two rollers and the knife installation wheel are the same, an axial cutting device is arranged at the side part of the support, a knife is used for annularly cutting along the outer surface of a cable, the height of the knife rest is adjusted after cutting a certain depth, the cutting depth is adjusted according to demand, thus, the cutting accuracy of the cable insulation shielding layer can be improved, and the cut cable is axially cut by the axial cutting device so as to conveniently strip the insulation shielding layer. By such structure, secondary cutting and manual stripping work are avoided, the working efficiency is greatly improved, moreover, labor and time are saved, and the safety is high.

The invention discloses a self-steering mechanism about the multiple land gaps in the field, which comprises the mobile platform, the self-steering walking mechanism and the control device.The self-steering walking mechanism is composed of two bases with the slewing mechanism and four tires with the in-wheel motor.The slewing mechanism is rotated by the bearing arranged in the mobile platform, the shore at the bottom of the bearing and the shock absorber.Or the slewing mechanism is rotated by the bearing arranged in the mobile platform, the base platform at the bottom of the bearing and the vehicle and bridge.The self-steering mechanism about the multiple land gap in the field utilizes the control device to control the four in-wheel motors to realize the self-steering of the wheel differential with the high control accuracy and the short turning radius.

The invention discloses an auxiliary trainer for respiratory rehabilitation. The auxiliary trainer comprises an air cylinder, an air pipe and an air nozzle, a piston is mounted in the air cylinder; asleeve is rotationally connected above the piston; a screw rod is connected to the upper part of the sleeve; the outer sides of the screw rod and the sleeve are sleeved with a spring; a handle is fixed at the top end of the screw rod; a top plate is mounted at the upper end of the air cylinder; a backflow device is fixed below the air cylinder; a return pipe is connected to the lower part of the backflow device; a sealing valve is installed in the middle of the return pipe, the air pipe is connected to the lower left corner of the air cylinder, a fixing block is fixed to the outer wall of theleft side of the air cylinder, a clamping base is connected to the left side of the fixing block, a flat plate is arranged above the clamping base, the air nozzle is connected to the upper portion ofthe flat plate, and an antifouling cover is installed on the outer side of the air nozzle. The trainer is simple in structure, convenient to use and suitable for self-training of a user, the trainingintensity can be manually adjusted by the user, the trainer is made to meet the training requirements of the user at different stages, and the practicability is higher.

A construction machine includes a lower traveling body on which an upper rotating body is rotatably disposed. The rotating body includes an upper frame provided with a bottom plate and a supporter acting as a perpendicular member. The bottom plate has an attachment hole extending substantially perpendicular to the bottom plate. The supporter is welded substantially perpendicular to the bottom plate while one end of the supporter is engaged with the attachment hole. Accordingly, the supporter can be easily fixed to the bottom plate while maintaining the perpendicularity and a proper height setting of the supporter.

The invention belongs to the technical field of ship transportation, and particularly relates to an improved container binding system for a ship. The system comprises a supporting bottom plate and a pin shaft seat assembly fixed at the right side of the upper surface of the supporting bottom plate through screws, the upper side of the pin shaft seat assembly is connected with a supporting sleeve through a pin shaft, the outer wall of the supporting sleeve is provided with a mounting groove in the axis direction of the supporting sleeve, a limiting tooth mechanism is embedded in the mounting groove, an inner cavity of the supporting sleeve is longitudinally in inserted connection with a vertical column, the front wall of the vertical column is provided with a positioning rack in the axis direction of the vertical column, and the limiting tooth mechanism is in clamped connection on the positioning rack. Through a height-adjustable mode, the improved container binding system is suitable for the fastening action of containers of various sizes, and the application range is wider; through the adjustable arrangement of the supporting sleeve and the vertical column, the height can be adjusted in a large range; through the arrangement of an adjusting threaded rod, the height can be further adjusted accurately, the system is adjusted doubly, and the accuracy is higher.

The invention relates to the technical field of knitting equipment accessories, and discloses a bed moving device for a knitting flat machine. The bed moving device comprises a base, the two sides ofthe top of the base are fixedly connected with the two sides of the bottom of a support respectively, the middle of the top of the support movably sleeves a threaded sleeve, the bottom of the threadedsleeve is movably sleeved with a supporting bearing, the bottom of the supporting bearing is fixedly connected with the middle of the top of the base, and the bottom of the outer wall of the threadedsleeve fixedly sleeves a first bevel gear. By means of the bed moving device for the knitting flat machine, a motor is longitudinally driven to drive a driven gear to rotate, thus a second bevel geardrives the first bevel gear to rotate, then the threaded sleeve rotates to drive a vertical adjusting screw to lift and fall, through two rotation transmission, the second bevel gear rotates for twocircles so that the threaded sleeve can rotate for one circle, the vertical adjusting screw lifts and falls by a thread pitch, and thus the height of a needle bed is accurately adjusted to make the position of the needle bed better and more accurately adapt to a flat machine tap.

The invention relates to a rotary table applied to three-dimensional human body scanning equipment and solves the problems that the rotary table of existing three-dimensional human body scanning equipment is single in function, complex in structure and the like. The rotary table comprises a base, a rotary disk, an armrest component, a weighing system, a body fat measuring system and a rotating system and is characterized in that a horizontal regulating part is arranged on the base; the armrest component comprises a handle and an armrest rod, the handle is arranged at the top end of the armrestrod, and the lower end of the armrest rod is fixedly arranged on the rotary disk; the weighing system comprises a weighing control panel and a gravity sensor, the weighing control panel and the gravity sensor are located below the rotary disk and fixedly arranged on the base, and the gravity sensor outputs a signal and transmits the signal to the weighing control panel; the body fat measuring system comprises a body fat control panel and a body fat testing piece; the rotating system comprises a motor, a transmission mechanism and a rotating gear. The rotary table has the advantages that the weighing system and the body fat measuring system are added to the rotary table, and the rotary table is capable of measuring the weight and body fat content of a human body.

The invention provides a device for manufacturing a groove in a large circular tube. The device is provided with an annular supporting plate. The symmetrical positions at the two ends of the annular supporting plate in any diameter direction are provided with positioning devices in a clamped mode. The annular supporting plate is provided with four clamp slots. The four clamp slots jointly divide the annular supporting plate into four equal regions. Each clamp slot is formed in the radial direction of the annular supporting plate and internally provided with a threaded connection rod in a clamped mode, wherein the threaded connection rod is capable of moving along an opening of the corresponding clamp slot. The front end of each threaded connection rod is provided with a sliding block. The sliding blocks can slide in the corresponding clamp slots. Nuts are assembled to the threaded connection rods. The nuts can tightly connect the annular supporting plate and the threaded connection rods when screwed. The other end of each threaded connection rod is fixedly connected with a set of semi-automatic cutting equipment. The semi-automatic cutting equipment makes rolling contact with the circular tube to be machined. The device is simple in structure, free of moving the tube, safe and convenient to operate, low in energy consumption and capable of improving groove manufacturing efficiency, the production cycle is shortened, and enterprise efficiency is improved beneficially.

The invention discloses a shoe tree height fine adjusting mechanism which comprises a cylindrical box body arranged vertically. A rotating shaft is mounted in the center of the box body, a threaded rod is located over the rotating shaft and is in screw joint with the rotating shaft, a rotating shaft gear is mounted on the rotating shaft, the rotating shaft gear is meshed with a driving shaft gear, the driving shaft gear is a rotating gear with a rotating position block, the driving shaft gear is mounted on a driving shaft, the driving shaft penetrates through the box body and is arranged horizontally, and a handle is mounted at the tail end of the driving shaft. The rotating shaft is in pivot joint with the bottom of the box body, a check block is mounted on the threaded rod, and semicircular blocks at the two ends of the check block slide vertically in check block grooves in the box body. In this way, the rotating shaft gear can rotate by the angle of a gear when the handle rotates by one circle, due to the fact that the rotating shaft can only rotate rather than move vertically, while the threaded rod in screw joint with the rotating shaft can only move vertically rather than rotate due to the action of the check block, the threaded rod can only move in the vertical direction slightly, a shoe tree is mounted on the top of the threaded rod, and therefore the purpose of fine adjusting of the height of the shoe tree is achieved.

The invention discloses a box body welding tracer which comprises an outer shell. A cavity is formed in the outer shell; an inner shell is arranged in the cavity; an inner shell rotating device is arranged on the outer shell; an inner cavity is formed in the inner shell; three probes are fixedly arranged in the inner cavity; a universal joint is arranged on the inner shell; a swing bar is arranged on a swing part of the universal joint; an eccentric part is arranged at the lower part of the swing part or the swing bar of the universal joint; a workpiece contact part on the eccentric part is used as a contact part; a contact part central axis of the contact part is deviated by a certain distance H relative to a swing bar central axis of the swing bar; a plane on which the swing bar central axis and the contact part central axis are positioned is a horizontal plane; a plane vertical to the horizontal plane is a longitudinal plane; the intersecting line of the horizontal plane and the longitudinal plane is parallel to the swing bar central axis; the swing bar not only can swing along the horizontal plane, but also can swing along the longitudinal plane under the guide of the swing part of the universal joint; and the side wall of the inner shell is provided with two first regulators.

The invention belongs to the field of electric power construction project large-section wire compression jointing manufacturing, and particularly relates to a wire compression jointing work platform used for large-section wire compression jointing. The wire compression jointing work platform comprises a fixing frame serving as a base body, a platform part fixedly connected with a compression jointing top is arranged on the fixing frame, a supporting unit used for supporting and limiting the spatial position of a wire to be in compression jointing is further arranged on the side, next to the platform part, of the fixing frame, and a supporting path of the supporting unit and a wire penetrating path of the compression jointing top are located in the same straight line. The wire compression jointing work platform is overall easy and convenient to operate, meanwhile, staff organizations are simplified, the compression jointing time is saved, and the wire compression jointing work platform has the advantages that the compression jointing process is improved, compression jointing workers are reduced, and the compression jointing time is shortened; the process quality is improved, and meanwhile the construction work efficiency is greatly improved.

The invention discloses a radar test bench, which comprises a bench bottom plate, a motor, a screw rod, guiding columns and a radar positioning mechanism, wherein the motor and the guiding columns are arranged on the bench bottom plate; the screw rod is connected onto a rotating shaft of the motor; and the radar positioning mechanism sleeves the guiding columns and is matched with the screw rod. The height position of the radar on the test bench can be accurately adjusted, various different radar products can be tested, the test bench is convenient to move, the test site is not limited, and test requirements in various environments can be met.

The invention relates to a steel truss assembly system which comprises a steel truss, a ground, a structural column, an installation point, an aerial assembly device and a hoisting system. The structural column is arranged on the ground, the installation point is arranged at the top end of the structural column, and the two ends of the steel truss are arranged at the installation point; the hoisting system comprises a hoisting point support frame, a steel rope, a hoisting hook and a crane, wherein the hoisting point support frame is arranged on the steel truss, the hoisting point support frameis connected with the steel rope, the crane is arranged in a ground operation area, and the crane is connected with the steel rope through the hoisting hook; and the aerial assembly device is arranged below a steel truss sectional splicing position. The steel truss assembly system has the beneficial effects that a track type adjustable vertical rod is adopted to support an assembly jig, the widthand the height of the assembly jig can be accurately adjusted, the system is suitable for assembling steel trusses with different forms and sizes, the installation precision of the steel trusses is improved, the engineering quality is improved, the construction progress is accelerated, construction is easy and convenient, and safety and reliability are realized.

The invention relates to demonstration equipment, in particular to flat parabolic motion demonstration equipment for physics teaching and aims at solving the technical problem of providing the flat parabolic motion demonstration equipment for physics teaching, enabling a student to intuitively observe the flat parabolic motion process and improving the teaching effect. According to the technical scheme, the flat parabolic motion demonstration equipment for physics teaching comprises a base, a mounting plate, bearing blocks, a screw rod, a nut, a servo motor, a first guide rail, a first guide sleeve, a placement plate, a first sliding rail, a first sliding block and the like; the mounting plate is arranged at the left part of the upper side of the base; the bearing blocks are arranged at the upper part and the lower part of the right side of the mounting plate respectively; and the screw rod is connected between the bearing blocks on the upper side and the lower side. The flat parabolicmotion demonstration equipment for physics teaching enables the student to intuitively observe the flat parabolic motion process and improve the teaching effect. By adopting the flat parabolic motiondemonstration equipment for physics teaching, a physics teacher can continuously change the height of the placement plate, so that a small ball is thrown out from different heights, the student observes flat parabolic motion falling distances of the small ball under different heights, understanding of the student to a knowledge point is enhanced, and the teaching effect is better.

The invention provides a device for uniformly spreading stone chips after municipal road construction, which includes a threaded rod, a scraper, a scraper, a flattening roller and a spike roller; one end of the conveying shaft is connected across a circular material barrel In the bearing on the inner side of the top end of the support, a screw conveying leaf is also welded on the conveying shaft, and the threaded rod at the upper end of the inner side of the support passes through the hole to fix the sliding cross bar, and the flattening roller and the wolf tooth roller pass through the two. The fixed shaft at the end passes through the waist circle through hole and is screwed with a locking handwheel. The scraper plate is fixedly arranged on the bottom inner side of the two sets of sliding cross bars, and the front side of the lower end of the scraper plate is connected with a scraper plow by bolts. The height of the stone chips is adjusted by using the scraping plate and the scraping plow. At the same time, the scraping plow increases the strength of the scraping plate. The gap between the stone chips is adjusted through the teeth on the spike roller to ensure that the density of the stone chips after spreading is consistent. , and use the flattening roller to flatten the stone chips again, so that the stone chips on the road surface can be spread more evenly.

The invention relates to the technical field of surgical operations, and discloses an auxiliary instrument for gastrointestinal surgery. The auxiliary instrument for gastrointestinal surgery comprises two fixing blocks; clamping grooves are adopted, the two fixing blocks are inserted into two operating table rods through the clamping grooves; first fixing bolts are inserted into screw holes and is screwed down; the operating table rods are clamped by the first fixing bolts, and completing preliminary fixation is achieved; a reinforcing plate is additionally arranged at the bottom of the fixing blocks, second fixing bolts are screwed into reinforcing holes; elastic blocks at the top of the reinforcing plate are adopted to compress the operating table rods, so that the stability of fixationis improved; a rotary adjusting knob is adopted, a connecting rod is adopted to drive a vertical gear to rotate, so that a transmission toothed chain is driven to move, two rotating cylinders can synchronously rotate in a bearing, a threaded moving rod is driven to move up and down under the thrust of threads, a fixing box can be adjusted to move up and down, lifting of the whole instrument is completed, the precision is higher, and the purposes of accurate height adjustment and good stability are achieved.

The invention discloses a shoe tree height manually adjusting device comprising a vertically arranged cylinder box; the center of the box is provided with a rotary shaft; the upper portion of the rotary shaft is provided with a thread rod; the top of the thread rod is provided with a shoe tree; the bottom of the rotary shaft is fixedly provided with a spherical surface sheave engaged with a horizontally arranged sheave plate; the sheave plate is arranged on the end of a driving shaft; the driving shaft penetrates the box, and is horizontally arranged; the other end of the driving shaft is provided with a handle; the rotary shaft is pivoted to the bottom of the box; the thread rod is provided with a stop block; semicircle pieces on two ends of the stop block can slide up and down in a stop block groove of the box; therefore, the handle can be rotated for one round so as to rotate the rotary shaft for 90 degrees; the rotary shaft can only rotate, cannot vertically move, the thread rod screwed with the rotary shaft is blocked by the stop block, so the thread rod can only vertically move without rotating; the thread rod can only make vertical minor moves; the top of the thread rod is provided with the shoe tree, thus finely adjusting the height of the shoe tree.

The main object of the present invention is to provide a substrate for a monochrome liquid crystal display apparatus having the excellent evenness of the gap between the substrate for a monochrome liquid crystal display apparatus and the counter substrate, capable of displaying with a preferable image quality without the brightness irregularity.In order to achieve the above-mentioned object, the present invention provides a substrate for a monochrome liquid crystal display apparatus comprising a substrate, a black matrix formed in a pattern on the substrate, a protection layer formed on the substrate so as to cover the black matrix, and a columnar spacer formed in the area with the black matrix formed of the protection layer, for adjusting the gap between the substrate and the counter substrate, wherein the height from the surface of the substrate to the upper surface of the columnar spacer provided in the pixel part of the substrate is higher than the height from the substrate surface to the upper surface of the columnar spacer provided in the outer peripheral part as the pixel part peripheral area of the substrate by in a range of 0 μm to 0.8 μm.

The invention provides an adjustable precise crushing and grinding module. The grinding module comprises: a drive source; a lifting mechanism; a grinding and crushing hammer connected with the drive source and comprising an upper end body, a lower end body and a pushing body integrally molded from top to bottom, wherein the upper end body and the lower end body are both circular tables, the pushing body is a cylindrical body, the outer diameter of the upper end body is increased from top to bottom in sequence, multiple cutter bodies are arranged on the outer wall, and the outer diameter of thelower end body is reduced in sequence from top to bottom; and a crushing and grinding cylinder comprising a first circular table cavity, a second circular table cavity and a second cylinder cavity coaxially arranged in sequence from top to bottom, wherein the crushing and grinding hammer is positioned in the crushing and grinding cylinder, and the crushing and grinding hammer is coaxial with thecrushing and grinding cylinder. The grinding module enables materials to realize the process flows of cutting, crushing, coarse grinding and finish grinding on one equipment, and adjusts the crushingprecision of crushed objects online under the condition of not replacing the crushing and grinding hammer.