35 results about "Retraction ring" patented technology

A combined retractor and endoscope system includes a retraction ring and an endoscope unit. The retraction ring includes a tubular inner surface defining a passageway. The endoscope unit includes a flexible arm that can be positioned stably and moved between an edge of an incision and an outer peripheral surface of the retraction ring, and a camera attached to one end of the flexible arm. In a preferred embodiment, the flexible arm has a flexible outer tube body incorporating a support strip that can be bent together with the outer tube body to retain a bent configuration of the outer tube body.

The invention discloses an impact-resistant interval grouting anchor cable and a use method of the impact-resistant interval grouting anchor cable. The impact-resistant interval grouting anchor cable comprises a one-way grouting valve, a hollow grouting stranded steel wire, an arc-shaped anchor ring, a sliding pressure yielding retraction ring, a tapered grout blocking plug and a subsection sealing plug, the sliding pressure yielding retraction ring is arranged between the arc-shaped anchor ring and the tapered grout blocking plug, grout discharge valves are arranged on a flexible grouting pipe in the hollow grouting stranded steel wire at certain-length intervals, the subsection sealing plug is arranged at the front end of an expansion area of the stranded steel wire, and interval grouting is achieved. The using method comprises the steps that a grouting section L2n-1 and a non-grouting section L2n are arranged according to coal petrography mechanical parameters of a construction location, initial resin anchoring is carried out on the interval grouting anchor cable, the interval grouting anchor cable is tensioned and pre-tightened, grouting materials are prepared, and a grouting pump is used for achieving the interval grouting on the grouting anchor cable. According to the condition of surrounding rock, the grouting section and the non-grouting section are arranged, the force bearing condition of a supporting system is scientifically improved, the instant high stress state, caused by the intense deformation of the surrounding rock, of the stranded steel wire of the anchoring section is relieved, and an anchor cable support is prevented from losing efficacy.

A liquid product dispenser including a container equipped with several independent compartments, each of which is associated with a pump including a body which is blocked, at the bottom, by a suction valve and, at the top, by an applicator and / or an exhaust valve and which contains a piston mechanism cooperating with an elastic return system, characterized in that the pump bodies are solidly attached to one another in the form of a single shrunk-on ring by a linking spacer which also watertightly covers the container compartments.

The invention discloses a limb surgical apparatus with the exsanguination and hemostasis functions. The limb surgical apparatus comprises an elastic retraction ring. The outer surface of the elastic retraction ring is composed of an inner ring face, an outer ring face and two side faces, wherein the inner ring face and the outer ring face are coaxially arranged, and the inner ring face and the outer ring face are spliced into an annular whole by the two side faces. The width of the inner ring face is no smaller than 2cm, the smallest flexible diameter of the inner ring face is 2.5-10cm, the largest flexible diameter of the inner ring face is 5-15cm, and the smallest flexible diameter is smaller than the largest flexible diameter. The limb surgical apparatus can achieve the two functions of exsanguination and hemostasis at the same time by means of elastic force of the elastic retraction ring and is simple in overall structure, low in cost, capable of being used safely in a disposable mode, sanitary and easy to use and operate, professional requirements for a user are not high, and thus the limn surgical apparatus is convenient to use.

A chucking and focusing device for an telescope eyepiece includes an eyepiece barrel consisting of an inner tube and an outer tube and damper formed with multiple elastic strips in a radial shape, and a constrict ring with female threads engaging the male threads of the outer tube and clamper. The inner tube, the outer tube and damper and the constrict ring are threadably combined with one another, so that rotating the constrict ring can gradually clamp the elastic strip and then the eyepiece tightly with its axis not biasing. A production process for the chucking and focusing device for an telescope eyepiece includes two steps. One step is to machine multiple lengthwise grooves in an inner surface of a metal constrict tube with its thickness being the same as the depth of the elastic strip. Another step is to machine the metal constrict tube to form elastic strips until the grooves are exposed, forming a single elastic strip between every two grooves, finishing forming of the clamper.

The invention discloses an extension and retraction mechanism and a support leg extension and retraction system for a concrete pump truck, which relate to the technical field of engineering machinery and are used for solving the technical problems of low extension and retraction speeds and difficulty in maintaining existing in the prior art. The extension and retraction mechanism comprises a first moving part, a second moving part, a base body, an extension and retraction device and a first-stage linkage structure; the extension and retraction device comprises a first member and a second member; the first member can extend or retract relative to the second member along a predetermined direction; the first moving part is fixedly connected with the first member; the base body is fixedly connected with the second member; and the first moving part can be used for driving the second moving part to extend or retract relative to the first moving part along a predetermined direction through the first-stage linkage structure in an extension or retraction process. The support leg extension and retraction system for the concrete pump truck comprises the extension and retraction mechanism provided by the invention. Due to the adoption of the extension and retraction mechanism and the support leg extension and retraction system, the extension and retraction speeds of an extension and retraction support leg in the concrete pump truck are increased, the structure is simple, and the maintenance difficulty is lowered.

The invention relates to a rapid seeding device comprising a seeding pipe, wherein the upper end of the seeding pipe is matched and connected with a seeding funnel, and the lower side of the seeding pipe is connected with a pressing block; the outer side of the pressing block is matched and connected with a hole digging head; the hole digging head is matched and connected with a retraction ring; the seeding pipe is also connected with a pedal; the pressing block is connected with a pressing plate through a pressing rod; the pressing plate is arranged below the pedal in parallel; and a tension spring which is in a stretching state all the time is connected between the pressing plate and the pedal. The rapid seeding device has the advantages that the whole seeding process can be finished by only one person; and the rapid seeding device is simple in structure, convenient to operate, capable of randomly regulating the seed burying depth, high in seeding speed and work efficiency, convenient, rapid and comfortable to use, suitable for small farmlands and relatively strong in practicability.

The invention discloses a safe bamboo shoot harvesting device. The device comprises a frame module, an operation module and a work module. The frame module comprises an installation column, a limiting rotary shaft is installed at the upper end of the installation column through a limiting bearing sleeve, one section of an operation rod is upward installed at the upper end of the limiting rotary shaft through a revolving shaft, the other section of the operation rod is collinearly arranged above the operation rod, and the two sections of the operation rod are connected through an expanding fixing sleeve and rotary retraction rings arranged at the upper and lower ends of the expanding fixing sleeve. A transmission installation cylinder is arranged at the upper end of the operation rod on the upper side, a limiting revolving shaft is sleeved with the transmission installation cylinder in a horizontal rightward mode, the right end of the limiting revolving shaft stretches out of the transmission installation cylinder and is provided with an operation handle, and another operation handle is arranged on the left side of the transmission installation cylinder through an installation rod. The operation module comprises the limiting revolving shaft, and a large transmission wheel is arranged on the left half section of the limiting revolving shaft. The safe bamboo shoot harvesting device has the advantages of being compact in structure, efficient in transmission and adjustable in shape, protecting health, being good in quality of harvested shoots, and saving time and labor.

The invention relates to a portable rapid seeding device comprising a seeding pipe, wherein the upper end of the seeding pipe is matched and connected with a seeding funnel, and the lower side of the seeding pipe is connected with a pressing block; the outer side of the pressing block is matched and connected with a seeding head; the seeding head is matched and connected with a retraction ring; the seeding pipe is also connected with a pedal; the pressing block is connected with a pressing plate through a pressing rod; the pressing plate is arranged below the pedal in parallel; a tension spring which is in a stretching state all the time is connected between the pressing plate and the pedal; the pedal is connected with a motor; an output shaft of the motor is connected with a rotating shaft through a bevel gear unit; the rotating shaft is located in the seeding pipe; the lower end of the rotating shaft is connected with a drill bit; and the drill bit is correspondingly arranged at the lower side of the seeding head and is in contact fit with the lower end face of the seeding head. The portable rapid seeding device has the advantages that the whole seeding process can be finished by only one person; and the portable rapid seeding device is simple in structure, convenient to operate, capable of randomly regulating the seed burying depth, high in seeding speed and work efficiency, convenient, rapid and comfortable to use, suitable for small farmlands and relatively strong in practicability.

The invention relates to a bag device for minimally invasive surgery, which comprises a recycling bag (10), A support rod (20) and a pulling assembly, the bag opening (11) of the recovery bag (10) isprovided with a retracting ring (111), The pulling assembly comprises a retraction rope (31) and an anti-falling pulling rope (32), wherein the retraction rope (31) penetrates into the retraction ring(111) and extends outside the retraction ring (111), one part of the anti-falling pulling rope (32) is connected to a support rod (20) and the other part is connected to a recovery bag (10); A part of the closure ring (111) is sleeved on one end of the support rod (20), and the recovery bag (10) is integrally wound and fixed on the support rod (20); An elongated airbag (40) is arranged in the retracting ring (111), and an inflating valve (41) is arranged in a part of the airbag (40) extending out of the retracting ring (111). As that invention doe not require an external sleeve to bind the recovery bag, the recovery bag can be smoothly opened in the patient body, and the invention has the advantage of simple structure and low cost.

The invention is suitable for the technical field of illumination, and provides a portable mobile lamp, which includes a battery bin, a lamp holder, a drive circuit and a light emitting element, wherein the lamp holder is arranged on the battery bin, and the drive circuit and the light emitting element are arranged on the lamp holder. The portable mobile lamp further includes a movably contractive support device arranged on the battery bin and used for supporting the whole lamp, an upper magnetic ring sleeving the upper part of the battery bin and used for upwards attracting and restraining the support device, and a lower magnetic ring sleeving the lower part of the battery bin and used for downwards attracting and restraining the support device. The support device includes a fixed retraction ring and a movable retraction ring which can be sucked by the magnetic force of the magnet. The fixed retraction ring sleeves the lower part of the battery bin and is arranged below the lower magnetic ring. The movale retraction ring sleeves the upper part of the battery bin and is arranged between the upper magnetic ring and the lower magnetic ring. The portable mobile device provided by the invention has the advantages of small volume, light weight, convenience for carrying, skillful structure, and convenience in use.

The invention relates to a bag device for minimally invasive surgery, which comprises a recycling bag (10), a support rod (20) and a pulling assembly, the bag opening (11) of the recycling bag (10) isprovided with a retracting ring (111), the pulling assembly comprises a retraction rope (31) and an anti-falling pulling rope (32), wherein the retraction rope (31) penetrates into the retraction ring (111) and extends outside the retraction ring (111), one part of the anti-falling pulling rope (32) is connected to a support rod (20) and the other part is connected to a recovery bag (10); a partof the retraction ring (111) is sleeved on one end of the support rod (20), and the recovery bag (10) is integrally wound and fixed on the support rod (20). As that invention does not require an external sleeve to bind the recovery bag, the recovery bag can be smoothly opened in the patient body, and the invention has the advantage of simple structure and low cost.

The invention provides a solar heat accumulation pipe and a machining method thereof. The solar heat accumulation pipe comprises a solar vacuum glass collector pipe, a heat accumulation pipe, a heat accumulation pipe retraction ring, a heat accumulation pipe retraction conical face, a heat exchanging pipe, a guide pipe, a water outlet pipe, a water inlet pipe, a thermal insulation layer and a shell, wherein the heat accumulation pipe is disposed in the solar vacuum glass collector tube and filled with phase change heat accumulation material, the heat exchanging pipe is disposed in the heat accumulation pipe, the guide pipe is disposed in the heat exchanging pipe, the heat exchanging pipe is connected with the water outlet pipe, the water inlet pipe is disposed in the water outlet pipe, the thermal insulation layer is disposed outside the water outlet pipe, the shell is disposed outside the thermal insulation layer, the heat accumulation pipe comprises a heat accumulation pipe body, the heat accumulation pipe retraction ring and the heat accumulation pipe retraction conical face, the heat accumulation pipe retraction ring is disposed at one end of the heat accumulation pipe body and connected with a heat accumulation pipe retraction body, and the heat accumulation pipe retraction conical face is connected with the heat accumulation pipe retraction ring. The invention further provides a machining method of the solar heat accumulation pipe. The solar heat accumulation pipe is simple in structure, high in safety performance, long in service life and high in production efficiency.

The invention discloses an impact-resistant interval grouting anchor cable and a use method of the impact-resistant interval grouting anchor cable. The impact-resistant interval grouting anchor cable comprises a one-way grouting valve, a hollow grouting stranded steel wire, an arc-shaped anchor ring, a sliding pressure yielding retraction ring, a tapered grout blocking plug and a subsection sealing plug, the sliding pressure yielding retraction ring is arranged between the arc-shaped anchor ring and the tapered grout blocking plug, grout discharge valves are arranged on a flexible grouting pipe in the hollow grouting stranded steel wire at certain-length intervals, the subsection sealing plug is arranged at the front end of an expansion area of the stranded steel wire, and interval grouting is achieved. The using method comprises the steps that a grouting section L2n-1 and a non-grouting section L2n are arranged according to coal petrography mechanical parameters of a construction location, initial resin anchoring is carried out on the interval grouting anchor cable, the interval grouting anchor cable is tensioned and pre-tightened, grouting materials are prepared, and a grouting pump is used for achieving the interval grouting on the grouting anchor cable. According to the condition of surrounding rock, the grouting section and the non-grouting section are arranged, the force bearing condition of a supporting system is scientifically improved, the instant high stress state, caused by the intense deformation of the surrounding rock, of the stranded steel wire of the anchoring section is relieved, and an anchor cable support is prevented from losing efficacy.

An electric transmission line warning device comprises an insulation sheath, a warning board and a retraction ring. The warning board is arranged below the insulation sheath, the retraction ring is arranged on the head portion of the insulation sheath, an electric transmission line is arranged in the insulation sheath, and bearing blocks are arranged on the two sides of the warning board. Flange heads are arranged between the retraction ring and the bearing blocks, an infrared detector is arranged below the warning board, a flash lamp is arranged on the warning board, and a buzzer is arranged on the flash lamp. The electric transmission line warning device has the advantages that the edges of the bearing blocks and the edge of the warning board are all in arc design, and the situation that corner angles are generated, and consequently floating objects and the like in air are possibly wound around the insulation sheath is avoided; a slogan is printed through colored reflecting materials and luminous materials, offline constructors can clearly see the slogan in the daytime and at night through the reflecting materials and the luminous materials, the reflecting materials can reflect dazzling light when a car is irradiated, and a better warning function is achieved.

The invention relates to the technical field of harnesses, in particular to a harness showing stand. The harness showing stand comprises a display board, wherein a trapezoid base is fixedly connected to the bottom of the display board, idler wheels which can be braked are connected to the bottom of the base, the front lateral side and back lateral side of the display board are respectively provided with multiple suspension parts which are arranged evenly and movably, the suspension parts include connecting rods, flexible retraction rings arranged at one ends of the connecting rods and magnetic blocks A arranged at the other ends of the connecting rods, grooves corresponding to the magnetic blocks A are formed in the display board, magnetic blocks B corresponding to the magnetic blocks A are arranged in the grooves, the magnetic blocks A are arranged in the grooves and are attracted by the magnetic blocks B, one ends of the flexible retraction rings are fixedly connected with the connecting rods, the other ends of the flexible retraction rings are movable, through holes are formed in the lateral sides of the fixed ends of the flexible retraction rings, the movable ends of the flexible retraction rings penetrate through the through grooves to be connected with limiting rings, and the limiting rings are detachably suspended on the connecting rods. The harness showing stand is convenient to operate, stable in suspension, high in applicability and capable of providing optimal display space for harnesses.

The invention relates to a fast quantitative seeding device. The seeding device comprises a seeding pipe, wherein the upper end of the seeding pipe is connected with an extension pipe, the extension pipe is fixedly connected with a seeding funnel through a quantitative seeding device, the lower side of the extension pipe is connected with a press block, the outer side of the press block is in fit connection with a tapping head, the tapping head is in the fit connection with a retraction ring, and the seeding pipe is further connected with a foot plate, the press block is connected with a press plate through a press rod, the press plate is arranged below the foot plate in parallel, and a tension spring in a stretching state all the time is connected between the press plate and the foot plate. The seeding device disclosed by the invention has the advantages that the whole seeding process can be finished by only one person, the structure is simple, the operation is convenient, the burying depth of seeds can be randomly regulated, the seeding speed is high, the working efficiency is high, the use is convenient and comfortable, the device is suitable for small fields and relatively high in practicability.

The invention discloses a novel knitted garment with detachable and washable lining, include a garment body, a sleeve on the back of the garment body, a first magnetic buckle group is arranged at theedge of the trunk, a back surface of the garment body is connected with a first liner through a first magnetic buckle group, and a first retraction ring is sewn at an intermediate position on one sidesurface of the first liner, the two sides of the first liner are respectively sewn with one end of the first contracting band, and the other end of the first contracting band is connected with the first contracting ring. The outer surface of the first contracting ring is connected with the first pulling rope. The sleeves on the front side of the garment body and the edges of the trunk are provided with a second magnetic buckle group. The invention makes it convenient and time-saving to disassemble or install. As long as the sleeves, shoulders and neck edges are properly fastened, other magnetic buckle groups will be attracted to each other and cooperate with the first zipper and the second zipper to make the lining and the garment body fit together, so that the effect of disassembling thegarment body is more rapid and labor-saving.