32results about How to "Protective thread" patented technology

A method and apparatus for running tubular(s) into a well bore for use with a top drive or power swivel comprising a make-up assembly with inner and outer members, one of which has an array of ramped or inclined surface(s) while the other is an inner or outer cage with rolling support(s) with or without a central spindle and openings which may also be referred to as tubular engagement apparatus wherein relative movement of the members urges the rolling support(s) to protrude radially through the openings to engage a tubular internally or externally. Also provided is an elevator assembly with elevator links and transfer elevators to position tubular for engagement by the make-up assembly.

A steering head that comprises a forward pivot block and a rearward pivot block. The forward pivot block is attached to a leading edge of a casing. The rearward pivot block is attached to a trailing portion of the casing, the leading edge being separated from the trailing portion by a gap in the casing. Extending between the forward and rearward pivot blocks is a central drive shaft. The central drive shaft includes a threaded portion and is rotatable to move a drive nut away from or towards the rearward pivot block. The central drive shaft, to either side of the drive nut, is covered by a cylindrical sleeve. A second internal sleeve extends between the rearward pivot block and the drive nut to protect the threads of the drive shaft from earthen debris when the casing is being advanced or reversed to steer the forward-most casing portion during operation.

The invention discloses a storage cabinet which comprises a storage cabinet frame. The center point of the storage cabinet frame is provided with a front-rear through storage cavity. The lower end face of the placement cavity is provided with a storage plate. The lower end of the storage plate is provided with multiple sets of drawing and pulling boxes distributed at equal intervals on the upper, lower, left and right portions. The upper end of the storage cavity is provided with multiple sets of wall cupboards. The front end faces of the wall cupboards and the front end faces of the drawing and pulling boxes are provided with handles. A side-turning preventing device is arranged in a top base of the storage cabinet frame and located on the upper sides of the wall cupboards. The side-turning preventing device comprises a fixing frame, a left side locking arm and a right side locking arm, wherein the fixing frame is fixedly installed in a bearing wall, and the left side locking arm and the right side locking arm are movably installed at the rear end of the top base of the storage cabinet frame in a left-right symmetrical mode. The top base of the storage cabinet frame is further internally provided with a guide groove which is extended front and back and communicates with a sunk groove. A guide rod is installed in the guide groove in a sliding mode. The storage cabinet is simple in structure, convenient to use, stable in operation and high in safety.

The invention relates to the field of machinery for electronic wires, in particular to an end stamping mechanism which comprises a framework, a die head, a die head upper adjusting block, a die head torque adjusting rod, a stamping head and two die head guide columns. An opening is axially formed in a threaded hole, which is matched with the die head torque adjusting rod, of the die head upper adjusting block, a certain distance is reserved between two surfaces of the opening in a natural state, and screws are arranged in a direction perpendicular to the surfaces of the opening. The end stamping mechanism with the structure has the advantages that a tightness adjusting mechanism is arranged between the die head upper adjusting block and the die head torque adjusting rod, is released at first when the die head torque adjusting rod needs to rotate to adjust the height of the stamping head, and is screwed down after the height of the stamping head is determined, so that threads of the die head torque adjusting rod are protected, and damage can be reduced.

The invention discloses a storage cabinet structure which comprises a storage cabinet rack, wherein a holding cavity which passes through front and back is formed in the middle point of the storage cabinet rack; a holding plate is arranged on the lower end surface of the holding cavity; a plurality groups of drawing boxes are distributed at equal intervals up, down, left and right at the lower end of the holding plate; a plurality groups of hung cabinets are arranged at the upper end of the holding cavity; handles are respectively arranged at the hung cabinets and the front end surfaces of the drawing boxes; a rollover prevention device is arranged on the upper side of the hung cabinets in a storage cabinet rack top base; the rollover prevention device comprises a fixing rack which is fixedly mounted in a holding well and a left fastening arm and a right fastening arm which are moveably mounted in sinking grooves in the rear end of the storage cabinet rack top base in a left and right symmetric manner; a guide groove which extends front and back and is communicated with the sinking grooves is further formed in the storage cabinet top base; a guide rod is mounted inside the guide groove in a sliding manner. The storage cabinet structure is simple in structure, convenient to use, stable to operate and high in security.

A process for manufacturing products made of composite materials, is disclosed which includes the steps:screwing at least one insert provided with a threaded hole on the outer thread of at least one pin partially inserted in a removable manner in a mold;arranging on the mold one or more fiber layers provided with at least one opening in which the insert is arranged;curing resin with the layers arranged on the mold, so as to obtain a product made of a composite material which incorporates the insert and the layers; androtating the pin in the insert for removing it from the mold.The present invention also relates to a mold, devices and a kit which can be employed for carrying out said process, as well as to products manufactured with this process and / or these means.

Disclosed are a hydraulic drill rig bit assembling and disassembling rotation and pushing self-adaptive hydraulic loop and a control method thereof. According to the hydraulic drill rig bit assembling and disassembling rotation and pushing self-adaptive hydraulic loop and the control method thereof, a loading sensitive variable pump, a loading sensitive proportional multi-way valve, a jackdrill, a pushing motor or oil cylinder and the like compose a jackdrill rotation and pushing main oil way; a bit assembling and disassembling pilot valve, a logic control module, an adjusting valve group, a pushing assembly, a rotating assembly and the like compose a bit assembling and disassembling self-adaptive control oil way. During bit assembly, the positive rotation speed is adjusted and determined by controlling the flow of the rotating assembly through the first pressure reducing valve of the adjusting valve group, the first hydraulic control reversing valve of the logic control module controls the loading sensitive external control interface LsA1 of the pushing assembly to be connected with the first overflow valve of the adjusting valve group, and the downwards-pushing force is adjusted and determined by the first overflow valve; during bit disassembling, the reverse rotation speed is adjusted and determined by controlling the flow of the rotating assembly through the second reducing valve of the adjusting valve group, the second hydraulic control reversing valve of the logic control module controls the loading sensitive external control interface LsB1 of the pushing assembly to be connected with a second overflow valve, and the upwards-pushing force is adjusted and determined by the second overflow valve. By synchronously coupling pushing pressure control and rotation speed regulation, the hydraulic drill rig bit assembling and disassembling rotation and pushing self-adaptive hydraulic loop and the control method thereof can achieve bit assembling and disassembling rotation and pushing self-adaption and bit achieve smooth and reliable bit assembling and disassembling.

Disclosed is a novel storage cabinet structure. The novel storage cabinet structure comprises a storage cabinet frame. A front-back-penetrating storing cavity is formed in the middle point of the storage cabinet frame. A storing plate is arranged on the lower end surface of the storing cavity. A plurality of sets of drawing boxes which are distributed at equal intervals up and down as well as left and right are arranged at the lower end of the storing plate. A plurality of sets of hanging cabinets are arranged at the upper end of the storing cavity. Handles are arranged on the front end face of the hanging cabinets and the drawing boxes. An anti-side-turning device is arranged at the position, located on the upper side of the hanging cabinets, in a top seat of the storage cabinet frame. The anti-side-turning device comprises a fixing frame fixedly installed in a load-bearing wall, a left side locking and fixing arm and a right side locking and fixing arm, wherein the left side locking and fixing arm and the right side locking and fixing arm are movably installed in sinking grooves in a left-right equal mode, and the sinking grooves are formed in the back end of the top seat of the storage cabinet frame. A guiding groove which extends front and back and communicates with the sinking grooves is formed in the top seat of the storage cabinet frame. A guiding rod is slidably installed in the guiding groove. The novel storage cabinet structure is simple in structure, convenient to use, stable in operation and high in safety.

The invention discloses a high-strength screw rod dedicated hoisting tool of a tension-free cast-in-place pile fan foundation, which solves the problems that the working efficiency of hoisting a high-strength screw rod of an existing tension-free cast-in-place pile wind power generator foundation is low and a screw buckle of the high-strength screw rod is easy to damage. The high-strength screw rod dedicated hoisting tool comprises a rectangular hoisting plate base (9); the high-strength screw rod dedicated hoisting tool is characterized in that the front side edge of the rectangular hoisting plate base (9) is provided with U-shaped grooves (8) at intervals, the front side of the top surface of the rectangular hoisting plate base (9) is provided with an inserting plate (2) with an inserting hole, the rear side of the top surface of the rectangular hoisting plate base (9) is provided with a high-strength screw rod nut supporting plate (5), the rectangular hoisting plate base (9) is provided with two hoisting lug plates (1) and two hoisting rings (7), the front side edge at the right end of the rectangular hoisting plate base (9) is provided with a plug pin locking groove (10), and a pin shaft of an L-shaped plug pin (6) is movably inserted in the inserting hole of the inserting plate (2). The high-strength screw rod dedicated hoisting tool disclosed by the invention has the advantages that the construction is simple, and the use is convenient; and the working efficiency of hoisting is increased.

The invention belongs to the technical field of automobile parts, and provides a stud assembly and disassembly tool, which comprises an opening and closing mechanism and a driving mechanism for driving the opening and closing mechanism to be opened and closed, wherein the opening end of the opening and closing mechanism is provided with internal thread matched with external thread of the stud; and the stud is in screw joint with the internal thread and is clamped via the driving mechanism. Through arranging the opening and closing mechanism which is matched with the stud and the driving mechanism for driving the opening and closing mechanism, the internal thread of the opening and closing mechanism clamps the stud; as the internal thread and the external thread of the stud are matched and clamped via the driving mechanism, sliding of the stud and the opening and closing mechanism during the assembly and disassembly process can be prevented, thread of the stud can be protected, wear debris is not generated, the thread can be protected, the stud can be reused after assembly and disassembly, and the utilization rate of the element is improved.

The invention discloses a storage cabinet which comprises a storage cabinet frame. The center point of the storage cabinet frame is provided with a front-rear through storage cavity. The lower end face of the placement cavity is provided with a storage plate. The lower end of the storage plate is provided with multiple sets of drawing and pulling boxes distributed at equal intervals on the upper, lower, left and right portions. The upper end of the storage cavity is provided with multiple sets of wall cupboards. The front end faces of the wall cupboards and the front end faces of the drawing and pulling boxes are provided with handles. A side-turning preventing device is arranged in a top base of the storage cabinet frame and located on the upper sides of the wall cupboards. The side-turning preventing device comprises a fixing frame, a left side locking arm and a right side locking arm, wherein the fixing frame is fixedly installed in a bearing wall, and the left side locking arm and the right side locking arm are movably installed at the rear end of the top base of the storage cabinet frame in a left-right symmetrical mode. The top base of the storage cabinet frame is further internally provided with a guide groove which is extended front and back and communicates with a sunk groove. A guide rod is installed in the guide groove in a sliding mode. The storage cabinet is simple in structure, convenient to use, stable in operation and high in safety.

The invention relates to a drilling tool adapter, which comprises a connector, a small core tube and a core tube, wherein one end of the small core tube is positioned in the inner part at one end of the core tube, the other end of the small core tube is provided with an inner rubber spring and an outer rubber spring, the small core tube and the core tube are both arranged in the connector, a clamping key is arranged between the connector and the core tube, the top upper end of the connector is provided with a rear pressing cover which is fixed on the connector through a fastening piece, and one end of the core tube, which is positioned at the outer part of the connector is provided with a spring. In the invention, when the drilling tool adapter is rotated tightly with a drilling tool, larger impact force of the drilling tool adapter with motive power can be acted on the drilling tool, the impact to the drilling tool can be effectively reduced through a rubber spring assembly, and thus the threads of the drilling tool and the connector can be protected; and when the drilling tool adapter and the drilling tool are unscrewed to separate, the unscrewing and the separating can be processed at the same time depending on the acting force of the spring, thus the threads are protected, and the threads of the drilling tool are prevented from being drilled by the drilling tool adapter on site. According to the drilling tool adapter, the protection for the drilling tool during an idle motion is effectively realized, and the drilling tool is prevented from being damaged when shackling.