11results about "Metal chainmaking tools" patented technology

The utility model discloses a chain dismounting device which comprises a flexible clamping mechanism and a dismounting mechanism. The flexible clamping mechanism comprises a left flexible clamping assembly and a right flexible clamping assembly, each flexible clamping assembly comprises a clamping seat and a plurality of clamping rods elastically arranged on the inner side of the clamping seat, the chains are elastically clamped through the clamping rods on the inner sides of the two flexible clamping assemblies, and the two clamping seats are driven by the driving assembly to get close to each other or get away from each other. The dismounting mechanism comprises a dismounting supporting plate, the middle section of the dismounting supporting plate is in threaded connection with a vertically-extending ejection screw, the bottom of the ejection screw downwards extends out of the lower portion of the dismounting supporting plate, the ejection screw is rotated downwards, and a chain pin of the chain is downwards ejected out through the bottom end of the ejection screw. Compared with the prior art, the chain dismounting device has the following advantages that accurate positioning and clamping and efficient and lossless dismounting of various chains with different sizes can be achieved, the dismounting work efficiency is improved, and potential safety hazards are eliminated.

The utility model relates to the technical field of loop chain hydraulic shear equipment, and discloses a loop chain hydraulic shear which comprises a hydraulic cylinder body, a knife rest is fixedly connected to the outer wall of the hydraulic cylinder body, a movable knife is installed in the hydraulic cylinder body, and a fixed knife matched with the movable knife is fixedly connected to the outer wall of the knife rest. Round shafts are fixedly connected to the outer walls of the two sides of the tool rest, the tool rest is movably connected with an overturning frame through the round shafts, sliding grooves are formed in the outer walls of the two sides of the overturning frame, sliding blocks are slidably connected to the outer walls of the sliding grooves, movable tightening hooks are fixedly connected to the outer walls of the bottoms of the sliding blocks, and the two movable tightening hooks are symmetrically distributed on the two sides of the movable cutter and the two sides of the fixed cutter. According to the utility model, the swing of the loop chain during shearing can be effectively avoided, the shearing efficiency and precision are improved, and meanwhile, due to the protection effect of the protective cover, the operation risk is greatly reduced, and the requirements of the shearing work of the loop chain of the underground coal mine scraper conveyor on the safety and reliability of equipment are met.

The invention relates to the technical field of chain machining, and discloses a multi-specification handheld chain joint disassembling device which comprises an assembling table, a joint disassembling mechanism and a positioning mechanism, a semi-open assembling cavity of the assembling table is used for laterally placing a chain, and a multi-specification ejector pin of the joint disassembling mechanism is switched through an adjusting disc and is driven by an electric cylinder to press downwards; a side supporting assembly and a side pushing assembly of the positioning mechanism clamp the rollers through rolling wheels and ejector balls, the distance between the rolling wheels is controlled through an adjusting screw rod, and pin shafts of the rollers with different diameters are made to be aligned with ejector pins all the time. And the pin shaft falls into the blanking cavity through the nail removing groove of the base, so that quick, accurate and safe joint disassembly of the chain with multiple specifications is realized. The invention solves the problems of difficulty in controlling manual impact, easiness in causing deformation of a chain plate, breakage of a pin shaft, injury to hands due to non-uniform tightness of a riveting head, potential safety hazards, low efficiency and poor quality in the process of disassembling and riveting the chain package product.

The utility model relates to a transmission chain link disassembling tool which comprises a fixing frame and a sliding groove, a transverse rod is arranged in the sliding groove, two sliding blocks are arranged in the sliding groove and distributed in the length direction of the transverse rod, a driving mechanism is arranged at the bottom of the fixing frame, the top of each sliding block is fixedly connected with a movable rod, and a spring rod is fixedly connected to the inner side wall of each movable rod. A limiting groove is formed in the top of the movable rod, a limiting block is arranged above the contact rod, a movable block is arranged in the limiting groove, transverse plates are hinged to the front side wall and the rear side wall of the movable block, a threaded rod is rotationally arranged at the bottom of the limiting groove, and a positioning groove is formed in the lower end face of the limiting block. The device has the advantages that the chain links to be detached can be in a loose state, a worker can conveniently detach the chain links needing to be maintained, the worker can conveniently insert the movable rod into a gap between the two chain links for limiting, and then the device can conveniently drive the chain links at the position of the movable rod to be close to each other.

The application discloses a transmission chain dismounting tool, and belongs to the technical field of mechanical maintenance tools. The tool comprises a supporting assembly, a tensioning assembly and a driving assembly. The tensioning assembly is provided with two groups of linear sliding rails arranged in parallel, and at least two tensioning arms are slidably arranged on each sliding rail. The driving assembly is arranged on the supporting assembly and is used for driving the two groups of sliding rails to move synchronously towards or away from each other. Corresponding tensioning arms on different sliding rails can be horizontally aligned to form a clamping unit. During use, the clamping unit can be clamped into the rollers of multiple rows of transmission chains at the same time, and the synchronous tensioning or releasing of the multiple rows of chains can be realized under the action of the driving assembly. The problems that the multiple rows of chains can only be dismounted and mounted step by step, the efficiency is low, and there are hidden dangers in the prior art are solved, the maintenance and equipment downtime are significantly shortened, the risk that the chains are unevenly stressed and fall off is avoided through mechanical synchronous driving, the operation safety is greatly improved, and the tool is suitable for the dismounting and mounting operation of single-row and multiple-row chains.

The utility model discloses a novel chain cutter which comprises a main body, a handle, a positioning seat, an ejector pin, a screw rod, a supporting column, an anti-falling sleeve and a ball, an axially extending containing cavity and a strip-shaped groove are formed in the middle of the main body, the positioning seat is installed at the bottom of the containing cavity, and the screw rod penetrates through the tail of the main body to enter the containing cavity. A cavity is formed in the front end of the screw rod, the tail of the ejector pin is inserted into the cavity, the ejector pin is installed at the front end of the screw rod through the anti-falling sleeve, and the ball is located in the cavity and abuts against the tail of the ejector pin and the bottom of the cavity; the front end of the ejector pin is aligned with the strip-shaped groove; the supporting column is mounted on the main body, and the upper end of the supporting column forms a supporting fulcrum for the ejector pin; the upper end of the handle is mounted at the bottom of the main body; and the positioning seat is provided with a plurality of positioning pieces for positioning the chain left and right. The chain cutting-off device is ingenious in structural design, capable of achieving positioning and cutting-off of the chain and convenient to use.

A track disassembling device comprises a protective housing, a cleaning component and a lifting pin, wherein the protective housing comprises a shell and a supporting plate, the cleaning component is movably sleeved with the protective housing and comprises a cleaning disc, a positioning rod, a connecting disc, a limit disc, a first spring and a first movable block, and the lifting pin is propped against the cleaning disc. A crank structure is formed by fitting with a connecting rod, a locating pin, a second movable block and other structures through the rotation of a turntable, and the second movable block can make reciprocating movement under the limit of the supporting plate to the second movable block; the second movable block making reciprocating movement can exert pressure on the first fixing component to form an impact when the electric telescopic rod extends, achieving separation from the axis pin.

The utility model discloses a chain disassembling tool for a cigarette factory. The chain disassembling tool comprises a fixing block, a limiting assembly and a disassembling assembly. The limiting assembly comprises a limiting part and a limiting plate, the limiting part is arranged on the fixing block, the limiting plate is arranged at the top of the fixing block, and the limiting part is used for placing a chain; the dismounting assembly comprises a knocking hammer and a pin shaft, the pin shaft penetrates through the limiting plate and abuts against the chain, and the knocking hammer acts on the pin shaft. During use, an operator firstly places a chain in the limiting part, then the limiting plate is installed on the fixing block, the pin shaft penetrates through the limiting plate to abut against the chain, the operator holds the knocking hammer, and the knocking hammer acts on the pin shaft and further acts on the chain, so that disassembly or assembly operation of the chain is completed. The problem that time and labor are wasted in a traditional chain dismounting and mounting method is solved, displacement caused by the fact that the chain is not reliably fixed in the operation process and potential safety accidents caused by displacement are eliminated, and the accuracy and the success rate are improved.

The utility model relates to the technical field of chain connection, and discloses an auxiliary device for chain connection. The chain connection auxiliary device comprises two lifting hook assemblies and an adjusting assembly, the two lifting hook assemblies are used for being connected with the two ends of a chain correspondingly, the adjusting assembly is connected between the two lifting hook assemblies, and the adjusting assembly is arranged to be capable of adjusting the distance between the two lifting hook assemblies so as to adjust the relative positions of the two ends of the chain in the horizontal direction. The two lifting hook assemblies can connect the two ends of a broken chain, the adjusting assembly meets the requirements for the tightness and tension of connection of the broken chain by adjusting the distance between the two lifting hook assemblies, and it is guaranteed that the reconnected chain can restore to the state before breaking; according to the chain connection auxiliary device, the two ends of a broken chain can be quickly and effectively connected, so that the broken chain can be conveniently and auxiliarily connected, time and labor are saved, and the chain connection efficiency and safety are improved.

A method of repairing a chain can include aligning an orifice of an outer chain link with an orifice of an inner chain link; inserting a pin through the aligned orifices, the pin having a threaded end opposite a head end; engaging a multi-jack bolt tensioner with the threaded end of the pin, the multi-jack bolt tensioner having a plurality of fasteners; advancing each of the plurality of fasteners to bear against the outer chain link; and forming an interference fit between the pin and the outer chain link at the orifice of the outer chain link as a result of the advancement of the fasteners.

A semi-automatic leaf chain link disassembling machine comprises a leaf chain feeding device, and the leaf chain feeding device is matched with a leaf chain link disassembling device. The plate type chain joint disassembling device comprises a plate type chain flattening device, a plate type chain positioning device, a pin shaft disassembling device and a pin shaft riveting device. The plate chain flattening device comprises a first guide wheel, a second guide wheel and a third guide wheel which are vertically arranged at intervals, a guide rod is arranged at the bottom of the third guide wheel, a chain wheel driven by a second motor is arranged in a gap of the lower side face of the guide rod, and the chain wheel is in meshed connection with a plate chain. According to the device, the leaf chain is introduced into the pin shaft dismounting device, the pin shaft on the leaf chain is quickly dismounted by accurately aligning the leaf chain positioning device with the pin shaft hole, then the punched pin shaft is manually riveted into the pin shaft hole by the pin shaft riveting device, and semi-automatic operation of feeding, pin shaft dismounting and riveting is realized in the whole process; the operation is simpler, more convenient and more efficient.