138results about How to "Fast harvest" patented technology

A surgical instrument is configured to aid in performing a procedure of detaching an internal mammary artery (IMA) and the like, from the connecting tissues and side branch vessels which surround the artery in its native location, wherein the detaching procedure is preliminary to the performing of a coronary artery bypass grafting procedure and wherein the IMA is detached via a minimally invasive thoracotomy. To this end, an elongated slender rod includes a handle at its proximal end and an artery engaging loop, arc, fork configuration, or hook at its distal working end. Embodiments may incorporate electrosurgical capability or electrical insulation. A surgeon thus has means for harvesting an intact and undamaged graft vessel from its native location through a minimally invasive incision with enhanced speed, visibility, and freedom of motion.

A rotary platform is provided for the harvest of specialty crops such as grass seed. In particular the conditioning rolls are removed from the header to reduce seed shatter and converging elements are added inside the conditioner opening on both sides and to the rear of the cutterbar to feed the crop around the conditioner opening corner and to the rear of the platform. Additional converging elements are provided behind the first converging elements at a angle less then 90 DEG. to the ground so as to form the top of the windrow so that there is minimal seed loss. The converging elements may or may not be powered and the angle of the second converging element can be adjustable. The rotary knives perform the cutting function more efficiently than a sickle cutterbar, and the converging elements move the crop toward the center to form a windrow with less disturbance.

The invention relates to the soilless cultivation filed of leaf-vegetable-type sweet potatoes, in particular to a family type soilless cultivation method of the leaf-vegetable-type sweet potatoes for family balconies. Compared with the prior art, thousands of residents can directly cultivate the pollution-free leaf-vegetable-type sweet potatoes simply and easily at their homes with the method, and the leaf-vegetable-type sweet potatoes can be picked for one time every 8-13 days (one period); and compared with a common soil cultivation method, the yield is improved by 17%-23%, and 3-5 plates of the leaf-vegetable-type sweet potatoes are planted in each family, so that fresh leaf-vegetable-type sweet potatoes can be eaten for more than two times each week. Under the situation that current urban land resources are heavily short, the method can enable people in the city to plant the leaf-vegetable-type sweet potatoes in their own balconies manually, so that fresh sweet potato seedlings full of nutrients can be eaten, family environments can be beautified, and family space resources are fully used. The family type soilless cultivation method of the leaf-vegetable-type sweet potatoes has the advantages of easiness and convenience in operation, low cost, high quality, high efficiency and the like, and has certain social and economic values and a wide marketing prospect.

A method for producing a polysaccharide and a conjugate vaccine including the polysaccharide produced according to the method. A characteristic step in the method is that the pH of the culture medium is kept at a constant value with base or acid until adjustment with respectively base or acid is not possible anymore. Using the method, capsular polysaccharide may be obtained in a high yield in a relatively short time. The method is straightforward, reproducible and cost-effective.

The invention relates to harvesting equipment, and particularly relates to agricultural high-efficiency carolina fanwort harvesting equipment. The invention aims at providing agricultural high-efficiency carolina fanwort harvesting equipment, which can quickly harvest carolina fanwort, effectively avoid the occurrence of accidents, and is safe to use and good in usage effect. Aiming at solving the technical problems, the invention provides agricultural high-efficiency carolina fanwort harvesting equipment, which comprises a bracket, a first rotating shaft, a first bearing seat, a second rotating shaft, a motor, a cam, a first contact roller, a left and right moving rod, a first spring, a second contact roller and the like; and the bracket is arranged at the top of a barrow, the first bearing seat and the motor are sequentially arranged on the lower side of the upper part of the bracket from right to left sequentially, and the first rotating shaft is arranged in the first bearing seat. The agricultural high-efficiency carolina fanwort harvesting equipment achieves the effects of rapidly harvesting carolina fanwort, effectively avoiding occurrence of accidents and being safe to use and good in usage effect, and a tremendous amount of carolina fanwort harvesting work can be quickly completed by using the equipment, so that the labor force can be saved.

The invention relates to a corn ear and stalk header integrating ear picking and straw cutting recovery. The corn ear and stalk header comprises an ear picking header located at the upper part and a straw cutting recovery header located at the lower part; the ear picking header includes an upper header support, one or more sets of ear picking operation units which are arranged side by side are arranged on the header support, each set of picking operation units comprises a forced feeding mechanism, a stalk clamping mechanism and an ear output mechanism which are successively connected, a left-and-right tool setting ear picking mechanism is arranged under the ear output mechanism; and the straw cutting recovery header includes a lower header support, a reciprocating cutter, a conveyor chainharrow structure and a conveyor auger which are successively connected are mounted in the lower header support, a feeding port is arranged in the rear baffle plate of the lower header support, and a movable cutter diving mechanism is arranged outside a sie plate at one side of the lower header support. The corn ear and stalk header realizes ear picking and stalk cutting recovery at a time to improve the harvesting speed and the harvesting efficiency; and the height of the harvesting header is adjustable, so the corn ear and stalk header is suitable for harvesting corn plants with different earheights.

The invention relates to a harvesting machine for a root-tuber crop in a deep soil layer. Straight growing root-tuber crops, such as Chinese yam, are almost harvested by manual operation, so that the efficiency is low and the cost is high. The existing harvesting equipment has the defects that the soil excavating depth is shallow, and the crop completeness is difficult to guarantee. The harvesting machine comprises a power device, a machine frame, spiral drilling rods, a front conveyor, a conveying bet mechanism and a soil discharging auger, wherein side baffles are fixed to the two sides of the machine frame; the spiral drilling rods are assembled at the lower part of the front section of the machine frame side by side; the front conveyor and the conveying bet mechanism are assembled on the machine frame in sequence, and are joined and matched in tandem to convey and lift the harvested crop and soil to the ground; the soil discharging auger which is connected with the spiral drilling rods and the power device transfers power and evacuates the soil below the machine frame and pushed by the spiral drilling rods backwards. According to the harvesting machine, through mechanical soil loosening and through two-stage conveying of the front conveyor and the conveying belt mechanism, the soil excavating depth is increased, the work efficiency is improved, and the labor intensity and the operation cost of the crops, such as the Chinese yam, are reduced.

The invention discloses a straw pulverizing and returning-to-field integrated machine, and relates to the technical field of agricultural production machines. The integrated machine comprises a pulverizing device, a conveying device and a harvesting device. One surface of the pulverizing device is in running fit with the conveying device. A first hydraulic rod is rotationally arranged on the peripheral face of the pulverizing device. One end of the first hydraulic rod is rotationally connected with the conveying device which is in running fit with the harvesting device. A second hydraulic rodis rotationally arranged on the peripheral side of the conveying device. One end of the second hydraulic rod is rotationally connected with the harvesting device. Through the common cooperation effectof the harvesting device, the conveying device and the pulverizing device, straw can be cut, pulverized and returned to the field through the field effect, use is convenient, straw chippings can be collected for feed production, functionality is powerful, production cost is reduced, the labor consumption is reduced, production efficiency is improved, and the straw returning-to-field reuse cycle is shortened through the structural design of a harvesting tool cylinder and a pulverizing tool in a box body.

The invention discloses a fruit picking machine. The fruit picking machine comprises a vibration motor (4), a connecting rod and a vibration head (9). One end of the connecting rod is connected with an eccentric wheel of the vibration motor (4). The other end is connected with the vibration head (9). The vibration motor (4) can drive the vibration head (9) to vibrate through the connecting rod. The fruit picking machine has the advantages that the operation is simple, the picking efficiency is high, branch climbing is not needed, and the personal safety of picking personnel is guaranteed.

The invention relates to a method for preparing cement clinker by utilizing sludge. The method mainly comprises the steps of preparing materials, mixing materials, prilling, drying roasting, and the like, the key is to choose silicon ash and zeolite paste as auxiliary raw materials to be mixed with discharged sludge of a sewage treatment plant, then technical components act with one another, SiO2, Al2O3 are combined with SO3, a part of silicate ionic group is replaced by sulfate ionic group, and therefore, the solution rate can be slowed down and the problem of large water consumption of the previous sludge-type cement is solved. When the cement clinker prepared by the sludge with the method is compared with the existing produced high-temperature cement clinker, 80% of energy can be saved, and CO2 discharge can be reduced by 85%. The method conforms to national recycling cyclic development of waste residue of sludge, and the like and is beneficial to new technology and new material changing waste material to things of environmental policy.

The invention discloses a corn harvester header, and relates to the technical field of corn combine harvesters. The corn harvester header comprises a header frame, more than two groups of ear picking devices are equidistantly arranged on a main plane of the header frame, the head of each ear picking device is connected with a feeding device through a spline, the ear picking devices are connected through a universal coupling with a spider, and a suspension cutting device is arranged below the front of the ear picking devices. The corn harvester header can realize feeding, ear picking and crushing functions and is simple in structure, reasonable in arrangement, small in overall size, convenient and fast in harvesting, fine in effect and wide in application range, and various portions are compact.

The invention relates to an intelligent vegetable harvesting device based on a parallel mechanism. The intelligent vegetable harvesting device comprises a damping and supporting mechanism, wherein the damping and supporting mechanism comprises a fixed platform; three parallel branch chains are uniformly mounted on the upper end surface of the fixed platform along an axial direction; the top ends of the three parallel branch chains are mounted on the lower end surface of a movable platform; a harvesting and rotary cutting device is mounted on the upper end surface of the movable platform, can achieve a function of vibrationally harvesting vegetables, and is rapid in harvesting speed and high in harvesting efficiency; the harvesting and rotary cutting device comprises a harvesting bottom plate welded on the upper end surface of the movable platform; a harvesting support rod is welded on the middle of the upper end surface of the harvesting bottom plate; the tail end of the harvesting support rod is welded with a harvesting support platform; four hydraulic cylinders IV are symmetrically mounted on the lower end surface of the harvesting support platform. The intelligent vegetable harvesting device can achieve the function of stably and vibrationally harvesting vegetables in greenhouses, and is free of manual operations and high in automation degree.

Provided is a hydraulic excavator pasture harvesting device. A tilting mechanism of the device comprises a base body and a tilting hydraulic oil cylinder. A grass embracing mechanism comprises a right grabhook, a grass embracing hydraulic oil cylinder, a pulling rod and a left grabhook. A cutting mechanism comprises a hydraulic motor, a driving belt wheel, a belt, a mounting cylinder, a driven belt wheel, a main shaft, a bearing, a mounting screw, a cutting disc mounting base, a cutting disc and a tensioning adjusting screw. The tilting mechanism of the pasture harvesting device is hinged to a bucket rod and a connecting rod of a hydraulic excavator. The cutting mechanism achieves pasture cutting off by the cutting disc by hydraulic motor driving and belt transmission. The grass embracing mechanism achieves cut grass embracing by the grabhooks by grass embracing hydraulic oil cylinder driving and a four-connecting-rod mechanism. The tilting mechanism achieves pasture discharging by titling hydraulic oil cylinder driving. Pasture which cannot be harvested by a branching frame during harvesting are branched to the two sides. Pasture such as pennisetum hydridum can be harvested quickly, efficiently, easily and stably.

The invention provides a sugarcane harvester, which comprises a four-wheel drive traveling device, a straightening device, a harvesting device and a vertical leaf stripping device, wherein the vertical leaf stripping device is obliquely arranged on a motor vehicle, and comprises a vertical leaf stripping box; openings are formed in the two ends of the vertical leaf stripping box; vertical leaf discharge ports are formed in the two sidewalls of the vertical leaf stripping box; one end of the vertical leaf stripping box is connected with a bracket; vertical conveying parts and vertical leaf stripping parts are arranged in the vertical leaf stripping box; the vertical conveying parts are arranged at the two openings respectively; the vertical leaf stripping parts are arranged between the vertical conveying parts; the vertical conveying parts and the vertical leaf stripping parts all comprise roll shafts perpendicular to the top and the bottom of the vertical leaf stripping box; rubber pipes for vertically conveying sugarcanes are arranged on the roll shafts of the vertical conveying parts; vertical leaf stripping steel wires for stripping leaves are arranged on the roll shafts of the vertical leaf stripping parts; the vertical leaf discharge ports are opposite to the vertical leaf stripping parts. The sugarcane harvester is higher in sugarcane harvesting speed and efficiency.

The invention relates to a stereoscopic cultivation method for soft-shelled turtles and cress, and belongs to the field of ecological breeding. The stereoscopic cultivation method includes arrangement of a floating bed; seed selection of the cress; germination accelerating of the cress; planting of the cress; pretreatment of the soft-shelled turtles; stocking of the soft-shelled turtles; feeding management of the soft-shelled turtles; water quality management; topdressing; and harvesting. According to the character that the cress can grow up in water, the cress is planted in the ecological floating bed, cress planting and soft-shelled turtle breeding are organically combined, and the space and a water resource can be fully utilized; breeding of subsidiary agricultural products and ecological cycle water quality improvement are organically combined; excreta and food debris generated during breeding of the soft-shelled turtles are decomposed into abundant nutriments in water, the abundant nutriment can be used for planting the cress, root systems of the cress can absorb the nutriments in water, ammonia nitrogen and nitrite in water can be effectively reduced, suspended matters can be absorbed, and then water in a pool can be cleaned, the environment pollution risk is lowered during breeding of the soft-shelled turtles, the agricultural production cost is reduced, and a landscaping effect can be achieved.

The invention relates to a picking machine, in particular to a backpack electric airflow cotton and fruit picking machine, which is characterized in that a motor is arranged on a mechanical connection plate; a power output shaft of the motor is connected with the input end of a gear band combination; the output end of the gear band combination is connected with the left-right suction blower; the rotating shaft end of the left-right suction blower is connected with a rotation through hole cover; a left cleaning room is provided with an exhaust-gas sundries exit B as well as a flower and fruit exit; a right cleaning room is provided with a main air inlet, a subsidiary air inlet and an exhaust-gas sundries exit A; and the left cleaning room is communicated with the right cleaning room by air pipes connected in series. The beneficial effects of the picking machine are that double blowers achieves the best effect of double cleaning and separation so that the harvest speed is improved, labor invested is reduced, and compared with the manual packing speed, the packing speed is improved by a plurality of times; the weight of the machine is light, the noise is low, the packing is free without restriction of the planting conditions; the machine wears well, and the operation speed can be controlled at any time; if the manipulator is changed, the fruits of more kinds of plants can be packed.

The invention relates to a self-propelled leaf vegetable harvester suitable for ridging type planting. The self-propelled leaf vegetable harvester suitable for ridging type planting comprises a rack,a vibratory root cutting device, an air-blowing auxiliary device, a conveying device, a profiled damping device and a walking device. The rack is used for supporting and fixing the other devices. Thevibratory root cutting device is used for generating vibration and cutting off the roots of leaf vegetables. The air-blowing auxiliary device blows the leaf vegetables obtained after root cutting to the conveying device through proper airflow. The conveying device is used for conveying and collecting the cut leaf vegetables. The profiled damping device is used for keeping stable operation of the conveying device. The walking device is used for providing power for the whole harvester. Root cutting, conveying and other mechanical operation of the green leaf vegetables are achieved, the green leaf vegetables in different sowing modes can be harvested, the breakage rate of the green leaf vegetables in the harvesting process is greatly reduced, and the labor productivity is improved.

The invention discloses a ballonflower harvesting machine which comprises a stand and land wheels. The land wheels are arranged at the bottom of the stand; the front end of the stand is provided with a traction bracket, and the rear part is provided with a collection box; the bottom of the front end surface of the stand is provided with a lifting coulter; a power converter is arranged in front of the stand and near to the traction bracket; the front of the power converter is provided with a power input rod, and one side is provided with a power input shaft; the power converter is connected with a chain type mesh sieve through an oscillating transmitting device; and the chain type mesh sieve is arranged in the stand on the front end of the stand and comprises a power output chain wheel, a power accepting shaft, a power accepting chain wheel, an oscillating block, a chain, an upper transmission shaft, a lower transmission shaft, an upper transmission chain wheel and a lower transmission chain wheel, wherein the upper transmission chain wheel is arranged on the upper transmission shaft, and the lower transmission chain wheel is arranged on the lower transmission shaft. The ballonflower harvesting machine has the advantages of low labor intensity, high work efficiency and simple process and is suitable for rapidly harvesting the ballonflower and the crops similar to the ballonflower in one time.

The invention discloses rice harvesting device. The rice harvesting device comprises a vehicle frame, a cutting-table conveying chain is fixedly connected to the bottom of the side wall of the vehicleframe, a cutter is arranged at the end, away from the vehicle frame, of the cutting-table conveying chain, a supporting column fixedly connected with the side wall of the vehicle frame is installed above the cutter, a seedling throwing wheel is rotationally connected to the end, away from the vehicle frame, of the supporting column, seedling dividing plates are arranged on an outer ring of the seedling throwing wheel, a feeding opening is formed in the side, close to the seedling throwing wheel, of the vehicle frame, a conveying box is fixedly connected inside the vehicle frame and communicated with the feeding opening, a gear transmission mechanism is arranged at the bottom of the conveying box, and a threshing device body fixedly connected with the side wall of the vehicle frame is installed at the end, away from the feeding opening, of the conveying box and is communicated with an inner cavity of the conveying box. By means of the rice harvesting device, rice can be rapidly harvested, harvested rice grains can be filtered, mature rice grains can be separated from immature rice grains, weeds and rice leaves, the quality of the harvested rice grains is guaranteed, and the rice harvesting quality is greatly improved.

The invention relates to an automatic vegetable harvesting device with a root rotary-cutting function. The device comprises a harvesting bottom plate. A harvesting branch rod is welded to the middle of the upper end face of the harvesting bottom plate, a harvesting branch table is welded to the tail end of the harvesting branch rod, four fourth hydraulic cylinders are symmetrically installed on the lower end face of the harvesting branch table, a grabbing table is installed at the top ends of the four fourth hydraulic cylinders, the grabbing table is driven by the four fourth hydraulic cylinders to stably move up and down, the left side of the upper end face of the grabbing table is provided with a vegetable rotary-cutting branch chain, four grabbing vibration branch chains are symmetrically welded to the lower end face of the grabbing table, vegetables to be harvested are automatically grabbed through the four grabbing vibration branch chains, mud attached to the roots of the vegetables are vibrated to a planting field, the roots of the vegetables are automatically and rotationally cut through the vegetable rotary-cutting branch chain after mud vibration is finished, and vegetables can be collected after rotary cutting is completed. The function of automatically harvesting greenhouse vegetables can be achieved, manual operation is not needed, and the automation degree is high.

The invention discloses a peanut planting method capable of rapidly harvesting, which comprises the following steps: I, selecting plump disease-free peanut seeds for accelerating germination; II, taking out the peanut seeds after embryo roots of the peanut seeds are exposed to white, and after sequentially soaking the peanut seeds in cold water and dressing seeds, obtaining the peanuts to be sown;III, digging a plurality of planting holes in a peanut planting field, and placing one peanut planting device in one planting hole; IV, covering soil and sowing in the planting device; V, harvestingpeanut straws and peanut pods. According to the method, the peanut seeds are directly planted into the planting device, and when the peanuts are ripe, the planting device is taken out from the land, so that the recovery ratio of the peanut pods and the integrity rate of the pods are ensured and the working hours required by harvesting the peanuts are shortened. The method saves time and effort inthe process of taking out the planting device. The planting device is simple in structure and low in manufacturing cost. The method can be widely popularized in the market and is suitable for the national conditions of China as a large agricultural country.

The invention discloses a method for artificially cultivating breeding funguses of an umbellate pore fungus, which solves the problem that the traditional umbellate pore fungus breeding fungus resource is critically lacked. The method provided by the invention comprises the following steps of: (1) breeding main materials: selecting fresh, black and elastic umbellate pore fungus sclerotiums with individual weights of more than 15 g as stock spawns; culturing pure-breed slant breed of the umbellate pore fungus into a cultivating breed; culturing a shoestring fungus slant breed into the cultivating breed and a strain rod; (2) producing a sclerotium excitant; (3) filling the cultivating breed into a basket to be cultivated; (4) managing cultivation; and (5) harvesting and carrying out a multiple cropping. The amount of the breeding funguses which are harvested by the method for two times is 4 times as much as the amount of the added sclerotium; the time is shortened to 14 months from the previous 28 months; the output of the good-quality grey funguses of the breeding funguses is great, the growing time can be shortened after the breeding funguses are planted in large fields, the growing time can be shortened to 3-4 years from the previous 4-5 years, and the breeding funguses have the high and stable yields; and the method provided by the invention realizes the aims of rapidness, high yield and low consumption, and can repeatedly harvest the breeding funguses of the umbellate pore fungus.

The invention discloses a vibrating type integrated red jujube picking and collecting machine. The vibrating type integrated red jujube picking and collecting machine comprises a red jujube collectiondevice, a supporting device, a clamping module, a storage battery and a wire; the red jujube collection device is a collection device of an umbrella surface structure; the supporting device is composed of a right rotating groove supporting device, a left rotating groove supporting device, a fastening belt, a clamping bolt and the like, the right rotating groove supporting device and the left rotating groove supporting device are provided with umbrella rib grooves formed along a right spiral line and a left spiral line respectively, and the umbrella rib grooves are used for supporting the redjujube collection device; the clamping module clamps branches of a jujube tree and generates vibration, so that red jujubes are vibrated and fall into the red jujube collection device. The vibrating type integrated red jujube picking and collecting machine has the advantages that the integration of picking and collection of the red jujubes is achieved, picking is quicker, and a large amount of manual labor is avoided.

The invention discloses a robot system for rapidly harvesting a bunch of grapes without falling and a realization method thereof. The robot system is composed of a movable chassis, an elevating mechanism, an aerial fruit box device and a small and light-weighted harvest manipulator. A gripper finishes picking, moving the bunch of grapes and vertically placing the bunch of grapes into the fruit boxon an elevating platform nearby. When longitudinal acting force between the gripper and a main spike-stalk exceeds the risk threshold of shaking falling fruit, risks of grape shaking and fruit falling are greater. Therefore, delivery speed is automatically reduced. When longitudinal acting force is lower than the risk threshold of colliding falling fruits, the gripper stops vertically performingdownward motion in order to prevent the fruit from falling down due to collision. Meanwhile, the gripper tilts downwardly and performs downwardly slanting motion by being away from a base till the longitudinal acting force is lower than the safety threshold at which a bunch of fruit lies down, which indicates that the bunch of fruits safely lies down and is put into the fruit box. Through nearby operation of the elevating platform and anti-falling feedback control, a robot can rapidly perform harvesting operation on the bunch of grapes without falling. The structure and the method are simple and reliable.

The invention relates to the field of forest fruit harvesting equipment, and discloses a fruit stem locking double-plate separation type forest fruit harvesting device which comprises a branch and fruit obstruction separation mechanism, a fruit stem locking mechanism and a handheld support driving rod. The branch and fruit obstruction separation mechanism is mounted on the top of the handheld support driving rod, and the fruit stem locking mechanism is mounted inside the branch and fruit obstruction separation mechanism. The fruit stem locking double-plate separation type forest fruit harvesting device has the advantages that a fixing plate assembly and a floating plate assembly of the branch and fruit obstruction separation mechanism are inserted into spaces between fruits and branches inclinging thin plate forms, fruit stems of the fruits can slide into V-shaped open grooves of the fixing plate assembly and the floating plate assembly and can be closed and locked in slots of the fixing plate assembly and the floating plate assembly by the fruit stem locking mechanism, the fruit stem locking reliability can be guaranteed by reverse dead point locations of mechanisms, the floatingplate assembly can downwardly move, the branches and the fruits can be separated and drawn away by the floating plate assembly and the fixing plate assembly in thin plate forms until joints of the fruit stems and the branches are snapped, and accordingly the fruits can be harvested by the fruit stem locking double-plate separation type forest fruit harvesting device.

The invention relates to the technical field of agricultural machinery, in particular to a silage corn harvesting and bundling film wrapping machine used for corn harvesting. The silage corn harvesting and bundling film wrapping machine comprises a walking machine body provided with a cab, and further comprises a harvesting device located at the front end of the cab of the machine body, a storagebin located in rear of the cab, a feed bundling machine located in rear of the storage bin, a conveyor belt connecting the storage silo and a compression bundling device, a sprinkler device located above the conveyor belt and a film wrapping machine body located at the most tail end of the machine body. The silage corn harvesting and bundling film wrapping machine has the advantages that harvesting, smashing, sprinkling, bundling and film wrapping are integrated, so that all parts are compact, the overall size is small, harvesting is convenient and fast, the effect is good, and the applicationrange is wide.

A Chinese caterpillar fungus-growing device comprises a box, a rubber mat and a partition. The side of the box is provided with through holes, and the section of the bottom of the box is slightly smaller than the section of the topmost opening of the box; the partition is provided with small partition holes, and the center of the partition is provided with a central big partition hole; the rubber mat is provided with slits, the center of the rubber mat is provided with a central big rubber mat hole, and the slits of the rubber mat respectively correspond to one small partition hole.