10 results about "Jaw locking" patented technology

This disclosure discloses a surgical instrument including a jaw assembly, a steering assembly, a jaw locking member, and a steering locking member. The steering assembly is connected to the jaw assembly. The jaw assembly has an open state and a closed state. In the open state, the jaw locking member is in a first unlocked state, and the steering locking member is in a second unlocked state, unlocked from the steering assembly. In response to movement of the steering assembly, the steering assembly drives the jaw assembly to rotate. In the closed state, the jaw locking member is in a first locked state, and the steering locking member is in a second locked state. In the second locked state, the steering locking member is locked to the steering assembly to restrict the movement of the steering assembly. The steering locking member in the second locked state locks the steering assembly, restricting its movement and preventing the steering assembly from causing the jaw assembly to rotate, thus avoiding the possibility of the jaw assembly rotating rapidly when open and accidentally injuring human tissue.

The invention provides a jaw locking mechanism and an anastomat. The jaw locking mechanism comprises a sleeve, a locking piece and a locking piece, and the end, close to the jaw assembly, of the sleeve is provided with the locking piece; the ejector pin seat is accommodated in the sleeve and is arranged close to the jaw assembly; the pull rod is contained in the sleeve, and one end of the pull rod is connected with the jaw assembly through a rotating shaft; the locking block is accommodated in the ejector pin seat and is positioned on the inner side of the pull rod; the locking push rod is contained in the ejector pin seat, and at least part of the locking push rod is located on the side, away from the pull rod, of the locking block; the locking spring is accommodated in the ejector pin seat and is connected with the locking push rod; when the jaw assembly is in an open state, the locking push rod and the stop piece are locked with each other; when the jaw assembly is in a closed state, the locking spring can actively / passively push the locking push rod to move towards the jaw assembly, so that the locking push rod, the locking block and the pull rod abut against one another and are locked. Compared with the prior art, the jaw locking mechanism can achieve stable locking of the jaw assembly at any angle.

The utility model discloses a kind of well drilling safety release tools, belong to petroleum drilling technical field.The tool includes the upper joint, upper outer tube, center tube and lower joint connected in sequence.Sealing element, safety pin and anti-rotation assembly are sleeved on center tube, and clamping jaw locking structure is equipped between upper outer tube and lower joint.When sticking occurs in downhole, raise pipe string and cut safety pin, make clamping jaw locking structure disengage, through rotating upper outer tube and anti-rotation assembly to reverse buckle and release, to raise upper pipe string.The utility model can withstand high temperature, high pressure, high corrosion environment, with the advantages of reliable release, reusable, especially suitable for ultra-deep well complex working condition under well drilling safety operation.

The invention discloses a method and a system for designing the locking amount of a split claw of a cylindrical roller bearing retainer, and aims to solve the problems that the design of the locking amount of the split claw of the cylindrical roller bearing retainer does not consider part machining errors and a springback effect after a lock claw split pressing process and cannot adapt to a combination scheme of different split claw structure parameters. The problem that the cylindrical roller bearing is scrapped due to the fact that a rolling body interferes with an inner ring and falls off in the assembling process is solved. According to the method, after the maximum boundary and the minimum boundary of the locking amount before silver plating of the cylindrical roller bearing retainer locking claw are calculated, a dimension corresponding relation data set of different retainer splitting claw thicknesses, splitting claw lengths and the minimum boundary of the locking amount of the retainer locking claw is constructed, and the relation of the three is obtained by using a radial basis function neural network; in subsequent application, the minimum boundary of the locking amount of the locking claw can be obtained according to the thickness and the length of the split claw of the retainer. The invention belongs to the field of cylindrical roller bearing retainer design.

A medical bed midwifery handle comprises a base, a buckle cover is arranged on one side of the base in a fixed structure mode, the buckle cover and the base are fixed through a bolt, one of a clamping groove and a clamping jaw is connected with the buckle cover, the other of the clamping groove and the clamping jaw is connected with a blocking disc, and the blocking disc cannot rotate when the clamping jaw enters the clamping groove; a mounting shaft is arranged in the base, one end of the mounting shaft extends into the base to be connected with the retaining disc in a fixed structure mode, a guide groove is formed in the peripheral face of the mounting shaft and connected with a limiting pin in a sliding structure mode, the other end of the limiting pin is fixedly connected with the base, the limiting pin is matched with the guide groove, and the mounting shaft can move in the axial direction and the circumferential direction of the mounting shaft. The mounting shaft in the base is sleeved with the spring, the two ends of the spring abut against the position between the side wall of the base and the blocking disc, locking of the clamping groove and the clamping jaw can be relieved by pulling the grip outwards with one hand, operation is convenient, the mounting shaft is locked through cooperation of the clamping groove and the clamping jaw, and the clamping jaw locking device is simple in structure, high in reliability, low in cost and suitable for application and popularization.

This invention provides a jaw locking mechanism and a stapler. The jaw locking mechanism includes: a sleeve with a stop at one end near the jaw assembly; a pin seat housed within the sleeve and positioned near the jaw assembly; a pull rod housed within the sleeve and connected at one end to the jaw assembly's pivot; a locking block housed within the pin seat and located inside the pull rod; a locking push rod housed within the pin seat and at least partially located on the side of the locking block opposite to the pull rod; and a locking spring housed within the pin seat and connected to the locking push rod. When the jaw assembly is in the open state, the locking push rod and the stop are locked together. When the jaw assembly is in the closed state, the locking spring can actively / passively push the locking push rod toward the jaw assembly, causing the locking push rod, locking block, and pull rod to abut and lock together. Compared to the prior art, the jaw locking mechanism of this invention can achieve stable locking of the jaw assembly at any angle.

The application discloses an opening machine claw locking device, which comprises a handle, a first sleeve, a second sleeve and a spring. The handle is hinged to the first end of a sliding rod provided with surface threads. An adjusting nut is arranged on the threads. The second end of the sliding rod is inserted into the inner side of the first sleeve and can slide along the axial direction. A through hole for inserting the first sleeve is arranged on the bottom of the second sleeve. The spring is arranged between the two sleeve bodies along the radial direction. One end of the spring is connected to the adjusting nut, and the other end is abutted against the inner side end of the bottom of the second sleeve. One end of the first sleeve close to the bottom side extends out of the second sleeve along the axial direction. A pair of radial outward coaxial first trunnions are arranged at the end of the first sleeve. The first sleeve is positioned on a base through the first trunnions. A pair of radial outward coaxial second trunnions are arranged at the opening end of the second sleeve. A pair of connecting rods are symmetrically arranged on the opposite sides of the second sleeve. The first ends of the connecting rods are respectively hinged to the coaxial trunnion holes on a pair of bases. The second ends of the connecting rods are respectively hinged to the second trunnions.

The application relates to the spline shaft clamping positioning technical field and discloses a spline shaft self-centering anti-creep clamping device, which comprises a fixed base disc, a sliding base, a clamping jaw module, a top pressing assembly, a sleeve and an adjusting assembly, the fixed base disc is provided with a through hole in the center, the sleeve is arranged in the through hole and can move in the axial direction, and the inner wall of the sleeve is provided with a shoulder; the sliding base is arranged on the fixed base disc, the clamping jaw module is installed in the sliding base, the top pressing assembly is arranged in the sliding base, and the adjusting assembly is arranged at the bottom of the fixed base disc and connected with the sleeve; the spline shaft self-centering anti-creep clamping device can complete the axial positioning adjustment and clamping jaw locking enhancement simultaneously after the clamping jaw module is replaced, can realize the self-centering clamping of workpieces in cooperation with multiple sliding bases, and can improve the model changing efficiency, locking reliability and axial anti-creep capacity during workpiece clamping.

The utility model relates to an adjustable positioning and locking mechanism for a lower jaw plate of a laboratory type eccentric roller crusher, and belongs to the field of mining machinery. Comprising a positioning mechanism and a locking mechanism which are respectively fixed on a supporting plate; the locking mechanism is composed of a locking block, a locking rod, a disc, a spring and a spring locking block, and the working stress of the lower jaw is relieved through the spring between the supporting plate and the spring locking block. The positioning mechanism comprises an adjusting sliding block, an adjusting threaded rod, an adjustable nut and a limiting nut, the adjusting sliding block and the adjusting sliding block abut against the lower jaw part, positioning of the lower jaw plate is achieved, and the position of the sliding block is adjusted through threaded fit of the adjustable nut and the adjusting threaded rod. The device has the advantages that the locking sliding block and the lower jaw locking connecting block are connected through the pin shaft, the position of the lower jaw part can be adjusted in real time according to conditions and needs, the size of a discharging opening of the eccentric roller type crusher can be adjusted, the lower jaw plate can be locked, operation is convenient, and practicability is high.

The invention discloses a jaw bending locking mechanism and an electric anastomat thereof.The jaw bending locking mechanism comprises a jaw locking piece movably arranged in a steering fixing seat, the far end of the jaw locking piece is provided with a positioning protrusion, a steering control seat is provided with a plurality of positioning slope grooves matched with the positioning protrusion, and the positioning slope grooves are matched with the positioning protrusion; a concave transition face is arranged at the end, facing the outer sleeve, of the middle of the jaw locking piece, a first locking end face and a second locking end face are formed at the two ends of the transition face in the length direction, a locking part protruding towards the transition face is arranged on the outer sleeve, and a mounting groove matched with the jaw locking piece is formed in the steering fixing base. A sliding limiting part through which the near end of the jaw locking piece penetrates is arranged in the mounting groove; and the locking piece limiting spring is arranged on the jaw locking part in a sleeving mode and located between the jaw locking piece and the sliding limiting part, and the locking piece limiting spring enables the positioning protrusion to have the tendency to be close to the positioning slope groove. According to the jaw bending locking mechanism and the electric anastomat with the jaw bending locking mechanism, accurate steering can be achieved, and the operation efficiency is improved.