115results about How to "Safe and reliable clamping" patented technology

The invention discloses a clamp with all-freedom constraints for an impact fatigue testing machine. A general clamp can not ensure reliable clamping under effects of reciprocating impacts of the impact fatigue testing machine, and even the clamp itself is damaged. The clamp of the invention is composed of a distance adjusting mechanism, an X-direction clamping mechanism, a Y-direction clamping mechanism, a Z-direction clamping mechanism and a Z-direction clamping and self locking mechanism, wherein the distance adjusting mechanism is used for adjusting the distance between two sample supporting seats to be applied to samples of different lengths; the X-direction clamping mechanism, the Y-direction clamping mechanism and the Z-direction clamping mechanism are used for clamping a sample to constrain all freedoms of the sample; and the Z-direction clamping and self locking mechanism is used for preventing the Z-direction clamping mechanism in the impact direction from getting loose. The clamp of the invention can be used for clamping a rectangular section sample for the impact fatigue testing machine, all freedoms of the sample can be constrained, and as the self locking device is arranged in the impact direction, the reliability and the safety of sample clamping can be ensured.

The invention discloses a flexible vector tactile and slip composite sensor, and relates to the field of robot flexible tactile sensors and intelligent surgical instruments. The flexible vector tactile and slip composite sensor comprises an upper flexible substrate, a force sensitive structure layer and a lower flexible substrate which are closely fit from the top to the bottom. The force sensitive structure layer comprises an upper electrode layer, a flexible piezoresistive material layer and a bottom electrode layer which are arranged from the top to the bottom. The upper surface of the upper flexible substrate is provided with an equidistant microstructure array. The force sensitive structure layer is closely fit with the upper surface of the lower flexible substrate. The lower flexible substrate is provided with periodic symmetrical convex structures along the thickness direction of the sensor. Symmetrical force sensitive units are respectively arranged at the two sides of the symmetrical convex structures. The slip situation can be judged and the positive pressure, the frictional force and the slip speed can be measured through the simple internal symmetrical convex structures; and the microstructure array is arranged on the upper surface of the sensor so as to enhance the clamping stability and safety.

The invention discloses a foreign matter cleaner for an electric transmission line lead. The foreign matter cleaner comprises a rack walking mechanism, a foreign matter cutting mechanism and a lead clamping and blocking mechanism, wherein a controller (8) and a power supply (13) are arranged in a box body (7); a wireless receiver is arranged on the controller (8), and is used for receiving an operation instruction sent out by an over-ground remote controller and controlling various motors to run according to an operation instruction from the ground; the lead clamping and blocking mechanism clamps the lead (3) and then the lead is blocked, so that the clamping is safe and reliable; the distance from a rotating cutter wheel (4) to the lead (3) is short; positioning is accurate; almost all foreign matters can be cut off; walking control of the cleaner on the lead (3), lead clamping and locking, and foreign matter cleaning can be realized when a person stands on the ground; the foreign matter cleaner is simple in structure, light in weight, convenient to carry and use, and high in cutting efficiency, and electric energy of equipment is saved.

A clamp apparatus including two pairs of first and second clamp arms, which are supported rotatably with respect to a body and are disposed mutually in parallel. First and second cam members including respective cam surfaces are provided on ends of the first and second clamp arms. The first cam members are pressed by rollers upon lowering of a block body under a driving action of a first cylinder that makes up a drive unit. The first clamp arms are rotated to assume a clamped state. The second cam members are pressed by rollers upon lowering of a block body under a driving action of a second cylinder of the drive unit, whereby the second clamp arms are rotated to assume a clamped state.

The invention discloses a fixture for detecting errors of a transmission wave surface of a large-sized neodymium glass plate, and relates to a clamping device for detecting errors of transmission wave surfaces of large-sized neodymium glass plates in the technical field of special-purpose fixtures. By the fixture for detecting the errors of the transmission wave surface of the large-sized neodymium glass plate, the large-sized neodymium glass plate can be clamped safely, and a placing angle can be adjusted conveniently and quickly. The fixture comprises a base, wherein two sides of the base are connected with travelling mechanisms; the top of the base is connected with a base rotating plate; the top of the base rotating plate is connected with a support frame; the support frame can rotate around the axis of the base along with the base rotating plate; an H-shaped left sliding track, a bottom concave clamping block and an H-shaped right sliding track are sequentially arranged on the top of the support frame from left to right; the H-shaped left sliding track is provided with a left supporting arm capable of moving along the length direction of the H-shaped left sliding track; a left concave clamping block is arranged on the left supporting arm; a right supporting arm capable of moving along the length direction of the H-shaped right sliding track is arranged on the H-shaped right sliding track; and a right concave clamping block is arranged on the right supporting arm.

Drawing gripper for weaving looms comprising a gripping device of the weft thread consisting of the coupling between a fixed surface formed in the inner part of the gripper hook and inclined with respect to the shifting direction of the gripper, and the mobile surface of a wedge carried on the front end of a longitudinal rod housed in the gripper and movable in an axial direction with respect thereto. The movable rod is driven in an open position of the gripping device, in contrast with spring means provided on the gripper, by lever means cooperating with fixed outer abutments arranged on the loom, and on the same rod the rear portion of a flexible metal plate is attached, the free front portion whereof imparts an elastic pressure force to the upper edge of at least one of the cooperating surfaces of said gripping device.

The invention discloses a hydraulic tong type pile pulling machine and a pile pulling method. The hydraulic tong type pile pulling machine comprises a hydraulic tong type clamping device and a vibration machine. The vibration machine is arranged on the hydraulic tong type clamping device and provided with lifting lugs. The hydraulic tong type clamping device comprises an inner movable clamp and an outer clamp. The inner movable clamp comprises multiple movable blocks, and the multiple movable blocks form a clamp ring. The outer clamp comprises two tong arms. One end of one of the tong arms is connected with one end of the other tong arm through bolts, and electric hydraulic jacks are connected between the other ends of the tong arms. The outer clamp is arranged on the outer circle of the inner movable clamp in a sleeving manner, and the inner movable clamp is arranged on the outer circle of a to-be-pulled pile in a sleeving manner. The outer clamp locks the inner movable clamp through the electric hydraulic jacks, so that the inner movable clamp is closely attached to the to-be-pulled pile for clamping. The hydraulic tong type pile pulling machine is simple in sleeving assembly, large in clamping force, safe and reliable and attached to the pile more; the slipping-off situation generated in the pile pulling process is avoided; the pile can be pulled out more easily; efficiency is improved; a pile body is prevented from being damaged; and the hydraulic tong type pile pulling machine is simple in structure, easy to operate, small in size and free of limitation of geographic positions and facilitates construction.

The invention relates to the field of automatic equipment and particularly discloses a speed-recognition-based fixture for a robot. The fixture comprises a base, side supports, cylinder seats, clamping cylinders, reinforcing ribs and clamping plates. Identical clamping blocks are fixedly mounted on the clamping plates on the two sides. A vertical lifting cylinder is fixedly arranged in the centerpoint of the base. A horizontal carrying plate is fixed to the output end of the lifting cylinder. The two sides of the lower side of the carrying plate are both provided with vertical height adjusting mechanisms. The clamping cylinders, first pressure sensors, the lifting cylinder, second pressure sensors and speed recognition modules are all connected to a controller. The fixture is manually controlled to start. The fixture is started by manually pressing and providing speed input. Moreover, after the fixture is started, there is no need to manually and continuously hold a workpiece until the workpiece is clamped, so that occurrence of some safety accidents are avoided. Thus, the fixture is safer in workpiece clamping, high in automation degree, convenient to operate and capable of saving time and labor.

The invention relates to a thin-wall blind hole part honing clamp. The clamp is used for clamping a thin-wall blind hole part; the thin-wall blind hole part is provided with a compaction part and a hollow part, the honing clamp comprises a supporting frame and a clamp body arranged on the supporting frame, the clamp body is connected to the supporting frame, the clamp body comprises a containing space used for containing a thin-wall blind hole part, a first clamping part which is arranged in the circumferential direction of the containing space, located at the bottom of the containing space and correspondingly collides with the compaction part of the thin-wall blind hole part, and a second clamping part which is arranged in the circumferential direction of the containing space, located above the first clamping part and correspondingly collides with the hollow part of the thin-wall blind hole part, the first clamping part is in rigid contact with the compaction part, and the second clamping part collides with the hollow part flexibly. The thin-wall blind hole part honing clamp has the beneficial effects of being simple in structure, high in clamping speed and safe and reliable in clamping; compared with the traditional clamping technology, the thin-wall blind hole part honing clamp has the beneficial effect that the effect can be improved by three to five times.

The invention discloses a multifunctional mortise and tenon machine. The multifunctional mortise and tenon machine comprises a rack, and front-back moving devices are arranged at the left end and the right end of the rack. The front-back moving devices are connected with the bottom end of a cross beam support. A left-right moving device is arranged at the top end of the cross beam support. A cross beam is arranged on the cross beam support. A left-right guide rail is arranged on the cross beam, and a plurality of exchange type tool sets are arranged on the left-right guide rail. A transverse table board is arranged below the exchange type tool sets. A plurality of transverse locating plates are arranged at the end of the transverse table board, and a plurality of transverse workpiece backers and transverse compressing air cylinders are arranged on the transverse table board in the longitudinal direction. A longitudinal fixed device is vertically arranged at the front end of the transverse table board. The invention further discloses an implementing method of the multifunctional mortise and tenon machine. The multifunctional mortise and tenon machine is characterized by being simple in structure, low in cost, convenient to use, high in speed, good in quality, high in precision and good in safety, facilitating workpiece clamping and the like.

The invention relates to a welding fixture of a vehicle rear composition device, and belongs to a positioning and clamping device for combining and welding vehicle rear decks of an all-terrain double-section track carrier vehicle. A mandrel clamping mechanism is arranged on a bracket; a rear support clamping mechanism is fixedly connected with the bracket by a fixed base; an inserted board is fixedly connected with the bracket; an inducer clamping mechanism is fixedly connected with the bracket by an oil cylinder connection base 1; a pull arm and pull lug clamping mechanism is fixedly connected with the bracket by a frame; and a rear support ring clamping mechanism is fixedly connected with the bracket by an oil cylinder connection base 2. The welding fixture of the vehicle rear composition device, disclosed by the invention, has the advantages of reasonable structure, convenience for loading and unloading, positioning and regulation, preciseness in positioning and safety and reliability in clamping.

The invention provides a lathe clamp and a lathe, and belongs to the field of mechanical processing equipment. The lathe clamp comprises a clamp housing and a clamp main body, wherein the clamp main body comprises a plurality of cylindrical chucks which are uniformly arranged in a peripheral direction of the clamp housing; central lines of the cylindrical chucks extend in an axial direction of the clamp housing; a plurality of threaded holes are respectively formed in positions, corresponding to the cylindrical chucks, on the clamp housing; the threaded holes are arranged at intervals in an axial direction of the clamp housing; bolts are in corresponding threaded connection in the threaded holes; the clamp main body is provided with a connecting part and a clamping part which are coaxially arranged, and the connecting part is inserted into the clamp housing; the connecting part is movably connected with a mounting part; the clamp housing and the clamping part are connected though a bolt, and the clamp housing and the connecting part are connected though a bolt; and the bolts are screwed up, so that the cylindrical chucks move in the radial direction of the clamp housing. The lathe comprises the lathe clamp. The clamp is convenient and quick in operation and good in clamping effect; and the lathe is high in processing precision, and safe and reliable to process.

The invention discloses a semiautomatic disk type polishing machine which comprises an index plate. The index plate is rotatably mounted below a rotation combining power system; a plurality of work piece rotation gears are distributed on the surface of the index plate at intervals; a clamping station is arranged above each work piece rotation gear; a vertical cylinder bracket work piece is arranged above the index plate for positioning; a work piece length adjusting screw rod arranged at the center of the index plate is positioned with the above vertical cylinder bracket work piece; and a plurality of axial reciprocating scanning type polishing heads are arranged at one side of the index plate. According to the semiautomatic disk type polishing machine provided by the invention, the skill requirements of workers and the labor intensity can be greatly reduced, the machine structure is simple, the manufacture cost is lower, and the reliability is high.

The invention discloses high-quality quick clamping flat tongs. The high-quality quick clamping flat tongs are specially developed and designed for machinery manufacturing users and have the advantages that time and labor are saved in the operation process, and the safety is extremely high. The high-quality quick clamping flat tongs are quick clamping flat tongs of a brand new structure, and the quick clamping flat tongs of a brand new structure are researched and developed through many years after comprehensive retrieval and analysis processing is conducted on the whole market of existing flat tongs at home and abroad. The horizontal bottom face of a movable jaw is closely attached to the upper end face of a sliding rail under the action of a clamping nut and a screw reset device, the front end of a clamping screw abuts against the upper portion of the front clamping face of the movable jaw, the defect that a workpiece is warped on the movable jaw side is avoided, and then precise positioning and the machining high precision of the workpiece are guaranteed. The problem that existing quick clamping flat tongs have very serious potential safety hazards is thoroughly solved through the unique structure. The high-quality quick clamping flat tongs achieve a leading level in the world on the aspects of safely using and efficiently, quickly and conveniently clamping the workpiece.

The invention discloses a feedback device for detecting a descending position of a workpiecepretargeting tray. The feedback device comprises a main body, an action rod, a straight pin, a spring plunger and a gas sensitive element. Interior air passage is communicated and closed through reciprocation from top to bottom of the action rod, an oil cylinder is clamped and then a workpiece is clamped after the result detected by the gas sensitive element is fed back to a numerical control system. According to the feedback device, closed loop feedback of the pretargeting tray is achieved, accident damage of clamps is avoided, and potential safety hazard is eliminated.

The invention discloses a moving device for large flower pots. The moving device comprises a moving rod I, a moving rod II, a buffer pad I, a buffer pad II, a moving left template, a moving right template, a check bolt I, a check bolt II, a check nut I and a check nut II, wherein the moving left template and the moving right template are symmetrical; an arc side is arranged in the middle part of the inner side of each of the moving left template and the moving right template; the upper surfaces at the two ends of the inner side of each of the moving left template and the moving right template are provided with bosses; and a through hole is formed in a part, close to the outer side of each of the moving left template and the moving right template; the buffer pad I and the buffer pad II are separately adhered onto the surfaces of the upper arc sides of the moving left template and the moving right template through gluing; the buffer pad I and the buffer pad II cling to an outer wall below the upper edge of a flower pot; the check bolts are separately inserted into circular holes in the bosses, and are locked by the check nuts; the moving rod I and the moving rod II are inserted into the outer side through holes in the moving left template and the moving right template; and two people can move a large flower pot by holding the moving rod I and the moving rod II by hand. The moving device is simple in structure and convenient to operate; the moving is labor-saving; the clamping is safe and reliable; and the moving work efficiency is high.