58results about How to "Sufficient gripping force" patented technology

The invention discloses a loading device used for a lateral-torsional vibration fatigue experiment and a method thereof. A sliding groove is formed in a base, brackets are installed at the two ends ofthe base, and a vibration exciter is connected to the sliding groove; the base body is connected with the brackets through bolts, rotary shafts are arranged on the two sides of a sliding sleeve, a clamping roller is installed above the sliding sleeve, and the rotary shafts are connected with a sliding seat and a shaft hole of a side plate; a guiding rod is sleeved with the sliding sleeve, and oneend of the guiding rod is connected with a loading arm; a clamping seat and a clamping head of the loading arm are opposite to each other, a V-shaped groove is formed in the clamping seat, and a second coupler is installed below the clamping seat. The loading device has adjustability and enough clamping force to ensure the stability of a platform, can provide pure torsion loading, torsion and transverse bending coupling loading, torsion and longitudinal bending coupling loading, torsion and oblique bending coupling loading and pure bending loading, has the advantages of high accuracy, high efficiency, low cost and multiple functions, and has important practical value regarding the completion of the vibration fatigue performance experiment for experimental piece materials with rectangularcross sections and circular cross sections.

The invention provides an adjustable valve clamping system. The adjustable valve clamping system comprises a pushing device and a valve clamping device, wherein the valve clamping device comprises a clamping device body and a clamping device adjusting mechanism. The clamping device body comprises a fixing base, a near-end clamping piece and a far-end clamping piece, wherein the fixing base is used for being connected with the pushing device so that the clamping device body can be pushed through the pushing device, and the near-end clamping piece and the far-end clamping piece are matched to clamp the valve tissue; and the clamping device adjusting mechanism is located between the pushing device and the fixing base and comprises an adjusting piece which can slide in the axial direction till the fixing base is sleeved with the adjusting piece, and when the clamping device body is folded, the adjusting piece abuts against the near-end clamping piece so as to adjust the traction degree of the clamping device body to the valve tissue. According to the adjustable valve clamping system, it can be guaranteed that the clamping device body has enough clamping force so that slipping can be avoided, and the degree of traction on the valve tissue by the clamping device body can be adjusted through the clamping device adjusting mechanism.

The invention discloses an inner wall self-locking overall pipe high-temperature tension test clamp. The clamp comprises a connector with one end connected with a tester pull rod, and a sliding locking part for locking the inner wall of a pipe body of an overall pipe; the sliding locking part expands outwards through inner bevels at the upper ends of sliding blocks to be clamped into a conical surface at the lower end of a cone linkage sliding core for connection, the connector enters a hollow hole of a locking nut through a threaded rod to be connected with the cone linkage sliding core, the locking nut is rotated downwards, the cone linkage sliding core pushes the three sliding blocks downwards to be kneaded inwards in the radial direction till a snap ring at the lower open end of the locking nut is clamped into a sliding block circular groove, elastic locking rings slightly protrude downwards to drive the sliding blocks to shrink inwards, the inner conical bevels of the sliding blocks are promoted to be attached to the conical surface of the cone linkage sliding core, the sliding blocks are driven to move downwards, outward pre-tightening force is provided, and the inner wall of the pipe is clamped. The clamp has the advantages that installation is convenient and rapid, the size is small, universality is good, no chock plug is needed, clamping is firm, and the situation that a sample is broken at the clamping end is avoided.

One embodiment of the invention provides a rotary cutter for a brush cutter, including: a head main body (1) having a cord guide hole (2-1); and a pressure member (2) having a cord inserting guide hole (2-1) formed to radially penetrate through the pressure member (2). The pressure member (2) is operable between: a first state in which the cord inserting guide hole (2-2) of the pressure member (2) is aligned with the cord guide hole (2-2) of the head main (1) body so that a cutting cord (3) is insertable into the head main body (1); and a second state in which the pressure member (2) is pushed inwardly of the head main body (1) from the first state; a third state in which the pressure member (2) is rotated with respect to the head main body (1) from the second state so that the inserted cutting cord (3) is made into a bent state.

The invention aims to provide a flying stop device for a carbon dioxide extraction device, and relates to a safety device in a mine, in particular to an expandable safety device for carbon dioxide extraction. The flying stop device for the carbon dioxide extraction device is simple in structure, reusable, simple and convenient to use and fine in flying stop effect. The flying stop device comprises an expansion pull rod (1) and an expansion sleeve (3), the expansion pull rod comprises a pull rod portion (11) and a frustum portion (12) which are mutually connected from front to back, a small end of the frustum portion faces the pull rod portion, the front end of the pull rod portion is connected with a nut (2) in a threaded manner, the expansion sleeve (3) is sleeved outside the expansion pull rod and comprises a sleeve (31) and an expansion head (32) which are mutually connected from front to back, the length of the sleeve is not smaller than 300mm, the diameter of the expansion head is not smaller than 45mm, the rear end of the expansion head is sleeved outside the frustum portion, at least two expansion pieces (321) are arranged at the rear end of the expansion head, and an arc groove (3211) is annularly formed in each expansion piece.

The invention relates to auxiliary equipment for prompting falling of materials in a stock bin, in particular to a stock bin arch-breaking device for eliminating arching of materials in the stock bin, and belongs to the field of material conveying. In modern industrial production, a large quantity of stock bins are needed for storing materials. Due to various reasons, the materials are arched in the stock bins and cannot be discharged out of the stock bins normally, and normal implementation of the functions of the stock bins is severely influenced. The stock bin arch-breaking device comprises a stock bin, an arch-breaking rod, a clamping wheel train and a support, wherein the clamping wheel train at least comprises two opposite clamping wheels; the outer edges of the clamping wheels are of groove structures; the arch-breaking rod is a hollow pipe, is clamped between grooves of the clamping wheels, and is inserted into the stock bin. The arch-breaking rod is clamped by the clamping wheels, and the clamping wheels rotate to drive the arch-breaking rod to enter the stock bin through a through hole formed in the bin wall of the stock bin for performing arch breaking; the stock bin arch-breaking device has the advantages of simple and practical structure, elimination of limitations on the arch-breaking distance, adoption of a plurality of combined arch breaking ways for arch breaking, and the like.

The invention relates to a gear shaping hydraulic power fixture for a single arm planet carrier of a decelerator. The gear shaping hydraulic power fixture comprises a coupling, a positioning base, a swelling sleeve, a supporting seat, a chip removing groove and a connecting plate, wherein the positioning seat comprises a first positioning seat, a second positioning seat and a third positioning seat; the second positioning seat is in the shape of a circular ring with an opening; the second positioning seat is arranged between the first positioning seat and the second positioning seat; the opening forms a chip removing groove; the first positioning seat is provided with a tapered inner surface; the swelling sleeve is arranged on the inner surface; the coupling is connected with a machine tool mandrel and the connecting plate; and the swelling sleeve is indirectly driven to move downwards through a third supporting seat and a second supporting seat. The clamping and positioning of the single arm planet carrier can be realized through the swelling sleeve.

Notebook computer shell polishing tool equipment based on an industrial robot comprises three parts including a flexile polishing head, a pneumatic clamp and a control unit. The flexible polishing head comprises a connecting flange, two connecting plates, two clamping blocks, compression springs and a pneumatic grinding machine. The connecting flange is connected with a tail end flange plate of the industrial robot. The connecting plates are connected with the connecting flange, and meanwhile the clamping blocks and the connecting plates are connected through half-thread outer hexagon bolts penetrating the compression springs. The pneumatic grinding machine is locked between the two clamping blocks. The pneumatic clamp comprises a bottom plate, air cylinders, long supporting plates and short supporting plates. The long supporting plates are symmetrically arranged in straight notches of the bottom plate, and the short supporting plates are symmetrically arranged in straight notches of the bottom plate. The air cylinders are arranged on the outer sides of the long supporting plates and the outer sides of the short supporting plates. The control unit comprises a robot control cabinet, a three-position five-way electromagnetic valve, an air source, a filtering pressure reduction valve and a two-position two-way electromagnetic valve. According to the polishing position, a notebook computer shell is automatically loosened and clamped, the polishing efficiency is high, the polished surface quality is good, and the notebook computer shell polishing tool equipment is applicable to different types of notebook computer shells.

The invention discloses an easily detachable water turbine maintenance platform, which comprises a platform surface and carrying beams arranged below the platform surface and used for carrying the platform surface, and is characterized in that brackets are mounted on both sides of a mandoor of a draft tube of the water turbine, and an upper cross beam and a lower cross beam are mounted between the brackets on both sides; the horizontal distance between the lower cross beam and the mandoor is smaller than that between the upper cross beam and the mandoor; rollers are arranged on opposite side surfaces of the upper cross beam and the lower cross beam respectively; a height adjusting device is mounted between the upper cross beam and the brackets; the carrying beams comprises a main beam andan auxiliary beam; the main beam of the maintenance platform is mounted between the rollers of the upper cross beam and the rollers of the lower cross beam; the auxiliary beam of the maintenance platform is mounted between the main beam and the tube wall of the draft tube; and the wall tube of the draft tube is provided with a matching part matched with the end part of the main beam to carry the main beam. The maintenance platform provided by the invention has the advantages of compact structure, convenience and stableness in use, easiness for mounting and dismounting, and the like.

The invention discloses a pen-type solder stick electric extruding feeder. The pen-type solder stick electric extruding feeder is characterized in that a solder stick reel is mounted on a rotating shaft, a right upper straightening wheel and a left upper straightening wheel are mounted on a straightening device housing through bearings, a lower straightening wheel is mounted on the straightening device housing through a bearing, the bottom surface of an upper wire feeding roller is propped against the top surface of a solder stick, the top surface of a lower wire feeding roller is propped against the bottom surface of the solder stick, a connecting sleeve is connected to and mounted on a penholder through threads, a cam is mounted on the output shaft of a driving motor and propped against a pushing plate, the pushing plate is fixedly mounted on a press bar, the press bar is mounted in the central hole of the connecting sleeve, a spring sleeves an inner tube, the right end of the spring is propped against an annular lug boss on the left side of the interior of the penholder, the left end of the spring is propped against the right end surface of the press bar, the inner tube is mounted in the penholder, a pen point is connected to and mounted on the penholder through threads, and clamping petals are mounted at the right end of the inner tube. The pen-type solder stick electric extruding feeder is simple to manufacture and convenient to use, and the use convenience and the health security of welding personnel are improved.

The invention discloses a mobile phone support for a smart bicycle. The mobile phone support comprises a mounting frame, wherein the two ends of the bottom of the mounting frame are connected with fixing rings through hinges, the bottom of each fixing ring is provided with a mounting plate, each mounting plate is provided a connecting hole, and a first screw is slidably connected in the connectinghole and is in threaded connection to a first nut; an adsorption plate which includes a plurality of adsorption holes, wherein the plurality of adsorption holes are located at the edge of the adsorption plate, the edge of the adsorption plate protrudes from the surface of the adsorption plate; the fixing rings configured to fasten and fix a butting connector on a coaxial connector to, wherein each fixing ring integrally extends in a tapered shape and has an insertion end and the fastening end formed at the two ends respectively, the inner diameter of the fastening end is smaller than the inner diameter of the insertion end, a plurality of outwardly bent buckles are punched at the fastening end, and each buckle extends in an arc shape along the fastening end and has a fastening portions and an engaging portion connecting the fastening portion and the fastening end.