270results about How to "Achieve release" patented technology

The utility model discloses a high-precision numerical control mechanism which comprises a base, and a workbench is arranged in the middle of the upper end face of the base. The clamping and positioning mechanism is arranged in the working table, the clamping and positioning mechanism comprises a driving seat, a rotating disc is installed above the driving seat, the rotating disc is located in the working table, and a servo motor used for driving the rotating disc is installed at the upper end of the interior of the driving seat; the clamping sliding blocks are annularly installed at the upper end of the workbench at equal intervals, the number of the clamping sliding blocks is four, the clamping sliding blocks are in sliding fit with guide sliding grooves in the workbench, connecting rods are installed between the bottoms of the clamping sliding blocks and the bottom of the rotating disc, and the connecting rods are of an L-shaped structure. And the two ends of the connecting rod are connected with the clamping sliding block and the rotating disc through rotating shafts correspondingly, a clamping block is integrally formed on the upper end face of the clamping sliding block, and the problems that a numerical control mechanism is too complex in structure and poor in overall positioning effect are solved.

This invention discloses a dual-head asynchronous cyclic clamping and releasing device and method, relating to the field of machine tool technology. It solves the technical problem of low processing efficiency caused by the need to clamp and release machine tools at different positions. The key technical solution is that the forward movement of the mandrel causes the locking element to drive the rotating spindle in a forward motion, thereby moving the guide groove to the limit rod; then, the reverse movement of the mandrel causes the compression spring to drive the rotating spindle in a reverse motion, thereby moving the first or second limit groove to the limit rod. Through the forward and reverse movements of the mandrel, the guide groove and limit groove on the rotating spindle can move to the limit rod, thus achieving synchronous clamping and releasing of the mandrel and the base head. This avoids the time wasted by the need for clamping and releasing at different positions in the traditional production process, thereby improving the processing efficiency of the product.

The utility model discloses a full -automatic embedded part injection molding takes out piece packaging machine belongs to injection molding machine technical field, it includes work table, work table top fixed mounting has fixed mould, the fixed mould is buckled and is connected with embedded part main part, the sliding block with the guide rail sliding connection, the sliding block is located between the guide rail with the embedded part main part, the guide rail is the inclined structure, the utility model discloses through the heat absorption block absorption external heat like the heat source of mould processing, the heat transfer to first air cylinder, and the heated expansion gas (like nitrogen) in first air cylinder and second air cylinder expands in volume because temperature rises, and pressure increases, and the telescopic link of movable block outside pushes the sliding block and slides on the inclined guide rail, because the guide rail is the inclined structure, the sliding of sliding block will produce the component force along the guide rail direction, and then will embedded part main part extrude to the inboard of fixed mould, avoids in the injection molding process and causes the displacement of embedded part to influence injection molding effect.

The utility model relates to the technical field of bearings, and discloses a liquid-lubricated heavy-duty bearing mechanism which comprises an outer ring, an inner ring is arranged in the outer ring, a limiting ring is arranged on the inner wall of the inner ring, a ball is arranged in the inner ring, a push rod is slidably connected in the inner ring, the bottom end of the push rod is fixedly connected with a connecting plate, and the bottom end of the connecting plate is fixedly connected with a piston rod. A tension spring is fixedly connected to the upper surface of the connecting plate, a transmission frame is fixedly connected to the lower surface of the connecting plate, a sliding rod is slidably connected to the outer wall of the transmission frame, a positioning rod is slidably connected to the outer wall of the sliding rod, a telescopic rod is fixedly connected to the outer wall of the sliding rod, and an oil conveying assembly is arranged in the inner ring. According to the utility model, through the cooperation of the push rod, the connecting plate, the tension spring, the transmission frame, the sliding rod, the telescopic rod and the positioning rod, the limiting ring is mounted and dismounted, the balls are limited or released, and local stress concentration of the balls is avoided, so that the overall bearing capacity of the bearing is improved.

The invention relates to the technical field of microbial probiotic preparations, in particular to a sodium alginate multifunctional composite microsphere as well as a preparation method and application thereof. The sodium alginate multifunctional composite microspheres are obtained by dissolving the carbohydrate vesicles, the traditional Chinese medicine nanoparticles and the probiotics in a sodium alginate solution and then dropwise adding the solution into a calcium chloride solution through an ionic cross-linking effect. According to the invention, the amphiphilic xylooligosaccharide-cystamine derivative with H2S response is synthesized through a click reaction on the basis of prebiotic xylooligosaccharide. And the amphipathic saccharide vesicles are obtained through self-assembly by virtue of hydrophilic and hydrophobic effects. Sanguinarine iodide prepared by purification, separation and reflux and baicalin are self-assembled in an aqueous solution through a non-covalent bond, and the traditional Chinese medicine nanoparticles are prepared through ultrasonic treatment. An in-vitro simulated release experiment proves that the sodium alginate multifunctional composite microsphere is relatively low in release rate under an acidic condition, so that substances are favorably delivered to intestinal tracts; and the release of encapsulated substances can be better realized in neutral and alkaline environments.

The invention discloses a multi-path distribution self-starting fire extinguishing device which comprises a fire extinguishing tank, a shunt, an alarm and a fusible pipeline, the fire extinguishing tank is provided with a liquid outlet, the liquid outlet is connected with a branching device through a main pipeline, one end, close to the branching device, of the main pipeline is communicated with an external air source through a pressurizing pipeline, the pressurizing pipeline is provided with a one-way valve, the branching device is connected with a plurality of branch pipelines extending to an inflammable area, and the branch pipelines are communicated with the main pipeline. The branch pipelines are connected with fusible pipelines located in the corresponding flammable areas. A pressure relief sensor is arranged on the fire extinguishing tank, and the pressure relief sensor is connected with the alarm in a closed loop manner; and the fire extinguishing tank is also provided with an anti-decompression valve and a pressurizing valve. The fire extinguishing device is reasonable in structural design and easy and convenient to operate, fire disasters can be extinguished automatically, rapidly and effectively, the safety and reliability of the agricultural machinery can be improved, and a powerful guarantee is provided for safe operation of the agricultural machinery.

This utility model belongs to the field of headband technology, and particularly relates to an adjustable headband. Its key features include: a first headband, of which there are two sets; a horizontal adjustment member, the two ends of which are respectively connected to the two sets of the first headband; a second headband, of which there are two sets, each set having a connecting member, and both sets of the second headband are slidably connected to the two sets of the first headband via the connecting members; the second headband also has a fixing member; and a plush cover, which is fitted over the first and second headbands and fixed to the second headband via the fixing member. Compared with the prior art, this utility model has better size adjustment capability to adapt to people with different head shapes.

The utility model provides a kind of electric pile function box applied to charging pile in, belong to electric pile technical field.It solved the problem that the existing market needs to carry more keys to open function box when carrying out periodic inspection maintenance to multiple charging piles in a region, so that the use of function box is not convenient enough, and causes more inconvenience to the work of staff.The electric pile function box applied to charging pile, including box body and box cover hinged on box body, the side of box body is provided with locking mechanism, for realizing the locking and release between box cover and box body, the utility model has the advantages that locking mechanism is set, the locking and release between box cover and box body is realized, and the operation of locking and release is simple, and the effect of quick locking and release can be achieved.

The present application relates to the technical field of biological materials, in particular to a light-responsive drug gel carrier and a preparation method thereof, in order to improve the controlled release function of the hydrogel material, the methyl methacrylate nitrobenzene compound containing nitrobenzene structure, hydantoin structure and propylene structure is prepared first, under the action of a photoinitiator, the double bond is crosslinked with methyl methacrylate and ethylene glycol methacrylate to form a hydrophilic gel network, so that the drug gel carrier is obtained; wherein the nitrobenzene structure has photosensitivity, and the crosslinking structure will be broken under ultraviolet irradiation, thereby reducing the stability of the gel material, destroying the rearrangement of the gel micelle structure, and realizing the release of the loaded drug; and the hydantoin structure introduced in the methyl methacrylate nitrobenzene compound also has good antibacterial performance, which can effectively avoid wound infection and improve wound recovery.

The utility model discloses a kind of clamping tool for iron core coil welding, comprising: locating seat, first plate body, second plate body;The locating seat is annular, and the locating seat is used to be fixed to iron core;The first plate body is rotationally connected with locating seat, and the central axis of the first plate body is collinear with the central axis of locating seat, and a plurality of first limiting units are formed on the first plate body, and a plurality of the first limiting units are spaced apart along the circumferential direction of iron core;The second plate body is rotationally connected with locating seat, and the central axis of the second plate body is collinear with the central axis of locating seat, and a plurality of second limiting units are formed on the second plate body, and a plurality of the second limiting units are spaced apart along the circumferential direction of iron core;The number of the first limiting unit and the second limiting unit is same and one-to-one correspondence, and the utility model has the advantages of synchronous clamping multiple flat copper wire end, improve work efficiency.

The utility model discloses a spraying machine for glass handrail processing, including spraying frame and spraying mechanism, spraying frame: its interior middle is rotatingly connected with mounting shaft, spraying mechanism: it includes sliding frame, moving block, ball head, spacing ring and spacing groove, sliding frame is respectively in sliding connection with mounting shaft interior front and rear sides, moving block, ball head, spacing ring and spacing groove. The moving blocks are slidably connected into the sliding frame, the four vertically adjacent moving blocks are distributed in a cross shape, the balls are arranged on the sides, away from the middle of the mounting shaft, of the moving blocks, the limiting rings are slidably connected to the middles of the front side wall and the rear side wall of the spraying frame, and the limiting grooves are formed in the upper ends and the lower ends of the interiors of the limiting rings correspondingly. According to the spraying machine for glass railing processing, the spraying mechanism is arranged, glass railings of different sizes can be rapidly fixed through adjustment, automatic and rapid discharging can be achieved after uniform spraying is conducted on the surfaces of the glass railings, continuous and uniform spraying operation is achieved, and the spraying efficiency and spraying quality of the glass railings are improved.

The application discloses an emulsion explosive stacking machine with a detection function, which comprises a sliding base and a clamp mechanism, the clamp mechanism comprises a mounting base and a clamp arm assembly, and the clamp arm assembly comprises a sliding plate, a clamping plate and a pose detection part. The sliding plate is connected to the mounting base through a clamping driving part, the clamping driving part drives the sliding plate to slide in the X-Z plane; two clamping plates are symmetrically arranged, and the two clamping plates are both connected to the sliding plate through a side position adjusting driving part, the side position adjusting driving part drives the clamping plate to slide along the Y-axis direction; the pose detection part is connected to the sliding plate and a group of pose detection parts are arranged on each clamping plate, the pose detection part is used for detecting the height of a corresponding position on the upper end face of a clamped material and feeding back the height of the position as a displacement stroke; and the height of a side corresponding to the two side positions of the clamped material is adjusted to a proper position by driving the sliding plate to slide. The emulsion explosive stacking machine can improve the stacking stability and the stacking operation efficiency.

The utility model relates to a logistics equipment technical field especially relates to a turnover mechanism, including conveying assembly and the frame of one side of conveying assembly, still include swing subassembly, swing board both ends are equipped with clamping assembly and counterweight subassembly respectively, drive subassembly is used for promoting swing board rotation to make clamping assembly overturn, limiting component is used for limiting clamping assembly, the utility model discloses two clamping air cylinders drive mobile seat linear movement along the branch board respectively, utilizes fixed base and mobile seat to form the clamping surface, realizes the clamping or loosening of goods, promotes swing board to rotate around the first pivot through drive subassembly, utilizes lever principle to realize the lifting overturn of clamping assembly, and counterweight subassembly offsets the load torque of clamping end, reduces the drive energy consumption.

The utility model discloses a full-automatic surface grinding machine, which relates to the technical field of grinding machines and comprises a bottom plate and a rotating rod, the rotating rod is rotatably arranged in the middle of the upper surface of the bottom plate, a first motor is fixedly arranged on the lower surface of the bottom plate, and the output end of the first motor is fixedly connected with one end of the rotating rod. A transverse plate is fixedly arranged at the upper end of the rotating rod, a first transverse rod is arranged below the transverse plate, a second transverse rod is arranged below the first transverse rod in parallel, first side plates are fixedly arranged on the two sides of the lower surface of the second transverse rod, and a grinding roller is rotationally arranged between the two first side plates; and a second motor is fixedly arranged on the outer side of the first side plate on one side. By the adoption of the double-station design, after a workpiece on one side is polished, the polishing mechanism can be rotated to the station on the other side to conduct highly continuous polishing work, time wasted by material changing is shortened, and production efficiency is improved.

The utility model discloses an automatic hanging hammer pendulum impact testing machine relates to testing instrument technical field, including test subassembly including impact testing machine and mounting seat, the lower extreme of impact testing machine is fixedly connected with the upper end of mounting seat, is provided with adjusting mechanism on the impact testing machine, is provided with limit mechanism on mounting seat, and test subassembly is used for carrying out impact test operation, and adjusting mechanism is used for adjusting the impact of test, and limit mechanism is used for fixing the object to be tested, the utility model discloses a adjusting mechanism and limit mechanism are set up, the fixed hammer head structure of part of impact testing machine in the prior art is solved, and it is difficult to effectively adjust according to sample height change, also, the device has certain adjusting function, but the operation is complicated, lacks effective locking mechanism, and the hammer head deviation or loosening phenomenon appears in the test process, when clamping and fixing the object to be tested, the conventional mode is mostly manual compression or mechanical detent, and the labor intensity is big, and the clamping stability is poor.

The utility model relates to the technical field of regenerated polyester yarns, in particular to a replaceable regenerated polyester yarn spray head which comprises a mounting seat, a stand column is mounted at the top of the mounting seat, and according to the replaceable regenerated polyester yarn spray head, a telescopic rod and a reset spring on a base are used in cooperation, so that the spray head can be fixed and released; when the spray head needs to be replaced, a transverse plate is pulled outwards to synchronously stretch a telescopic rod and a reset spring, a positioning rod is pulled out of a positioning hole in a convex block, then a connecting base and the spray head can be easily taken down, dismounting and mounting are convenient, replacement is convenient, rotation control over a threaded rod can be achieved by controlling the rotation direction of a servo motor, and replacement is convenient. Due to the fact that the threaded rod is in threaded connection with the movable block, rotation of the threaded rod can drive the movable block to move up and down, when the movable block moves up and down, the cylindrical block synchronously drives the movable frame to ascend and descend outside the stand column so as to adjust the height of the spray head, and therefore the practicability of the device is improved.

The invention discloses an automobile, a braking system, a brake and a state monitoring method of the brake. In the brake, the flange rotor is connected with the motor rotating shaft and is in rolling connection with the stator, so that the flange rotor can rotate relative to the stator along with the brake motor rotating shaft. The slot disc is arranged on the stator; the armature is connected with the flange rotor through an elastic piece so that the armature can reciprocate between the flange rotor and the groove disc in the axis direction of the flange rotor. The permanent magnet generates a first magnetic force on the armature. And under the condition that the coil loses power, the first magnetic force resists the reset pulling force, so that the armature moves towards the groove disc and is correspondingly attracted with the groove disc. After the coil is electrified, a second magnetic force is generated on the armature, the resultant force of the second magnetic force and the reset pulling force resists the first magnetic force, the armature moves towards the flange rotor and is separated from the slotted disc, locking and releasing of the brake motor are achieved, the brake is integrated on the motor, the size, noise and energy loss of a brake system are reduced, and the manufacturing difficulty and the testing difficulty are reduced.

The utility model relates to the technical field of assembling device, disclose a kind of wire harness terminal connection assembling device, including base, the inside fixed connection of base has clamping mechanism, the clamping mechanism includes disc seat, the outside sliding connection of disc seat has carousel, the inside sliding slot of carousel is slidably connected with slide bar, the outside fixed connection of slide bar has rectangular plate, the outside fixed connection of rectangular plate has ring clamping plate, the inside fixed connection of base has drive assembly, the outside fixed connection of carousel has connecting block. In the utility model, connecting block is pushed by electric push rod, carousel is rotated, carousel drives rectangular plate and ring clamping plate radial movement by slide bar, realize the clamping and loosening of wire harness, effectively prevent wire harness sliding during assembling process, ensure the stability of assembling process, improve the quality and efficiency of wire harness terminal connection assembly.

The utility model relates to the technical field of optical lens production, and discloses an optical lens thickness detection device which comprises a fixing mechanism, the fixing mechanism comprises a fixing bin, the fixing bin is provided with a measuring mechanism and a lens clamping mechanism, and four sliding grooves are formed in the periphery of the inner bottom wall of the fixing bin at equal angles. The lens clamping mechanism comprises a sliding seat which is connected in the sliding groove in a sliding mode. According to the utility model, the lens clamping mechanism with strong compatibility is designed, namely, a group of clamping block structures are arranged in the fixed bin and comprise four clamping blocks which are arranged in an equal-angle shape, and the synchronous driving mechanism is arranged at the bottom ends of the four clamping blocks and can drive the four clamping blocks to synchronously move towards each other or away from each other; the lens clamping and loosening device can clamp or loosen a lens in the fixing bin, can be matched with a special-shaped lens or a lens with a complex external structure for fixing, ensures that a measuring head can accurately measure along the contour of the lens, and improves the universality of equipment.

The invention discloses a quick release device and a portable power source, and the quick release device comprises a first housing, a second housing, a first locking member, a driving member, and a second locking member. The first shell is provided with a mounting cavity and at least one through hole communicated with the mounting cavity; a limiting groove which can be communicated with the through hole is formed in the second shell; the first locking piece is mounted in the mounting cavity, and one end of the first locking piece can extend out of the first shell through the through hole and extend into the limiting groove of the second shell so as to lock the second shell; the driving piece is connected with the first locking piece and is used for driving the first locking piece to retract into the first shell so as to release the second shell; a locking groove is formed in the driving piece; the second locking piece is provided with a locking part, and the locking part can stretch into the locking groove after the driving piece drives the first locking piece to retract so as to lock the driving piece. The quick dismounting device and the mobile power supply are used for realizing convenient dismounting and mounting between the two shells, and the dismounting and mounting operation is simplified.

The invention relates to the technical field of medical instruments, and discloses a catheter nursing device for intravenous therapy in the oncology department, which comprises a mounting seat, an arm clamping and fixing mechanism is arranged on the outer wall of the mounting seat, the arm clamping and fixing mechanism comprises a servo motor, and the front surface of the servo motor is fixedly connected with the upper end of the back surface of the arm clamping and fixing mechanism; the output end of the servo motor movably penetrates through the front face of the mounting base, a lead screw is fixedly mounted at the output end of the servo motor, a mounting frame is movably mounted on the front face of the lead screw, the back face of the mounting frame is fixedly connected with the front face of the mounting base, a connecting frame is fixedly mounted at the middle end of the front face of the mounting frame, and a limiting guide rod is fixedly mounted at the front end of the inner wall of the mounting frame. By arranging the arm clamping and fixing mechanism, the arm of a patient can be stably fixed, the problem that a catheter is pulled out or shifted due to shaking of the arm of the patient or misoperation of medical staff in the nursing process is effectively solved, and the nursing safety and efficiency are improved.

This application relates to the field of vehicle technology, disclosing a storage device, a sub-instrument panel assembly, and a vehicle. The mounting base includes a first end and a second end opposite to each other. The first end is used to connect to a mounting position on the vehicle. The second end has a receiving cavity. A movable support plate is movably connected to the second end. The movable support plate can move within the receiving cavity in a direction approaching or away from the first end to have a first position close to the first end and a second position away from the first end. A clamping assembly is at least partially disposed on the side of the movable support plate opposite to the first end and forms a clamping opening. When the movable support plate is in the first position, the clamping opening retracts to fix the target storage device in the mounting position via the movable support plate and the clamping assembly. When the movable support plate is in the second position, the clamping opening expands to remove the target storage device from the mounting position. Applying the technical solution of this application can solve the problem of insufficient comfort and convenience for rear passengers operating the rear center console screen in the prior art.

The application discloses a flexible capillary hydrogen storage device and a manufacturing method thereof, and is characterized in that device components include a framework, a flexible hydrogen storage capillary and a high-pressure-resistant metal connecting piece; wherein both ends of the flexible hydrogen storage capillary are in an open state. The device manufacturing steps include: flexible hydrogen storage capillary single-pipe drawing, flexible hydrogen storage capillary arrangement and flexible hydrogen storage capillary end sealing. Compared with the prior art, the application can realize higher hydrogen storage pressure and higher mass hydrogen storage density, and the device has the advantages of flexible structure, higher safety, no hydrogen embrittlement and the like.

This invention discloses a light-controlled molecular heterogeneous thermal storage device, belonging to the field of solar energy storage technology. The device includes a detachably connected first and second shell, both with mirrored inner surfaces. The first shell houses a light source assembly containing a xenon lamp and a first filter; the second shell has a magnetically attachable second filter on its top and multiple circular flow heat exchange channels running through its sides. A rotatable heat storage layer is fitted around each channel, and the interior is filled with a molecular light-switching material. A liquid metal thermally conductive layer is filled between the heat storage layer and the heat exchange channels. This invention achieves switching between natural light and auxiliary light modes through a detachable structure, adapting to different lighting conditions and enabling all-day operation; the rotating heat storage layer and mirrored inner wall ensure uniform illumination, and the liquid metal ensures efficient heat transfer, thereby significantly improving the energy storage and release efficiency of the molecular light-switching material and the system's controllability.

The embodiment of the utility model provides a universal adjusting structure and a surgical system.The universal adjusting structure comprises an operating assembly and an adjusting assembly, the adjusting assembly comprises a locking piece and an adjusting piece, the locking piece comprises a locking block, a locking ball and a locking rod which are arranged in the first direction, and the adjusting piece comprises a ball cup provided with a containing cavity and a ball located in the containing cavity; one end of the locking rod can extend into the containing cavity and abut against the ball head. The side, close to the locking ball, of the locking block is provided with a first concave part, the locking block is connected with the operation assembly and can be driven by the operation assembly to move so that the locking ball can enter and exit from the first concave part, and in the process that the locking ball enters and exits from the first concave part, the locking rod can move in the first direction so as to be matched with the ball cup to achieve releasing or locking of the ball. According to the embodiment of the invention, the locking ball can smoothly enter or move out of the first concave part, so that the risk that the universal adjusting structure is jammed and the like in the process of releasing or locking the ball head is reduced, and the experience feeling of a user is further improved.

The invention discloses a containerized system start-stop control method and device, electronic equipment and a storage medium, and relates to the technical field of data processing, and the method comprises the steps: configuring a process termination signal hierarchical response mechanism of a container platform, and controlling a process termination process through a preset maximum downtime parameter; triggering a service unavailable mark based on the process termination signal, closing a monitoring port according to the service unavailable mark to intercept a new request, and cancelling interface information of the service registration center; monitoring operation states of the application layer thread pool and the timed task cluster, and waiting for all active requests of the application layer thread pool and uncompleted tasks of the timed task cluster to be processed within a preset timeout period; and sequentially closing the log framework, the thread pool and the database connection pool according to a preset resource release sequence, completing safe release of resources, and recording a log state. The method has the technical effects of guaranteeing service continuity in a containerized deployment or updating process, ensuring data integrity and realizing safe and orderly release of resources.

The utility model relates to a novel flying fork type winding device which comprises a feeding device and a winding device which are sequentially arranged, the feeding device comprises a first installation table and a first roller, a workpiece is wound on the first roller, the first roller is rotationally connected with the first installation table, and the winding device is arranged on the first installation table. The winding device comprises an installation rotating disc and at least one second roller, fibers are wound on the second rollers, the second rollers are rotationally connected with the installation rotating disc, and the installation rotating disc rotates around a workpiece to enable the fibers to be wound on the workpiece; the workpieces are stored and released by rotating the first roller; the fibers are stored and released by rotating the second roller; the mounting turntable rotates around the workpiece, so that the fibers on the second roller are wound on the workpiece; due to the design, more materials can be stored at one time, and automatic feeding and winding can be achieved, so that the operation steps of workers are reduced, and the production efficiency is improved.

This application discloses a battery cell gripper and a battery cell clamping device. The battery cell gripper includes a clamping arm, a clamping block, and a toggle member. The clamping block is detachably mounted on the clamping end of the clamping arm, and a groove is provided on the mounting side of the clamping block. One of the clamping arm and the clamping block is provided with a protrusion, and the other clamping arm and the clamping block are provided with a limiting groove. The protrusion extends into the limiting groove to form a guiding engagement in a first direction. The protrusion and the limiting groove engage and restrict the clamping block from disengaging from the clamping arm in a second direction. The toggle member is disposed on the clamping arm, and the insertion end of the toggle member is configured to be inserted into the groove of the clamping block, thereby restricting the movement of the clamping block relative to the clamping arm in the first direction. When the toggle member is moved away from the clamping block, the insertion end of the toggle member is configured to move away from the groove of the clamping block. When the above-mentioned battery cell gripper needs to clamp battery cells of different sizes, only the clamping block needs to be replaced, which is simple to operate and has high replacement efficiency.

The utility model provides a backward-pulling compression type clamp for a lathe. The backward-pulling compression type clamp is characterized in that a through hole is formed in the middle of a chuck; open slots for placing the pull arms in a penetrating manner are formed in two sides of the chuck; the rear end of the chuck is connected with a spindle of the lathe; the clamp base is arranged on the front side of the chuck; the tightening device comprises a pulling seat and a pulling arm; the pulling seat is arranged in the pulling hole, the two sides of the pulling seat are connected with the pulling arms respectively, and the tail end of each pulling arm is provided with a clamping hand; the clamping hand abuts against the front side of a workpiece, the clamp base abuts against the rear side of the workpiece, and the workpiece is clamped by the clamping hand and the clamp base. According to the utility model, the clamping hands can be correspondingly close to or far away from the clamp base by driving the pull arms, so that a workpiece is clamped or loosened.