89 results about "Moving jaw" patented technology

A power vise including a body and a jaw connected to and extending from the vise body. The vise can also include an actuator extending at least partially through the jaw body, where the actuator can include a first end and a second end opposite the first end. The vise can include a moving jaw connected to the first end of the actuator. The vise can include a motor connected to the second end of the actuator, where the motor can be operable to move the actuator to move the moving jaw with respect to the fixed jaw, including a hammering or impacting function, and that such hammering or impacting can be performed after a predetermined delay. The vise can include a sensor configured to produce a signal based on a condition of the vise and to control the vise at least in part on using that signal.

A green, safe and efficient mining device for a mine is provided. The device includes a support frame, a crushing bin, a fixed jaw plate, a movable jaw plate, a cam roller, a movable jaw back plate, first springs and a driving device. The support frame is provided with an opening, the crushing bin is installed on the support frame; the fixed jaw plate is vertically installed on a left side of an inside of the crushing bin, the movable jaw back plate is installed at one side of the movable jaw plate; a top end of the movable jaw plate is hinged to a right side of the crushing bin, the cam roller is rotatably connected with the inside of the crushing bin and is slidably connected with the movable jaw back plate.

The invention discloses a multifunctional wrench for railway maintenance, and relates to the field of railway maintenance equipment, the multifunctional wrench comprises a wrench body, the wrench body is provided with a fixed jaw, a movable jaw, a worm, a rotating shaft and a handle, the wrench body is provided with a torque measuring assembly, and the torque measuring assembly comprises a strain gauge arranged on the fixed jaw and a display screen arranged on the handle and provided with a controller. A laser warning assembly is arranged on the handle, rotating shafts are arranged on the two sides of the worm and rotationally connected with the handle, a driving assembly for driving the rotating shafts to rotate is arranged in the handle, and a battery is embedded in the handle. When a user uses a wrench to tighten or loosen a nut, the movable jaw moves through thread engagement of the worm so as to clamp a workpiece; a strain gauge in the torque measuring assembly is installed on the fixed jaw and can sense applied force and generate an electric signal, the signal is transmitted to the display screen controller on the handle, the torque value is displayed in real time, and the laser warning assembly can emit laser in the working process to conduct detection so as to provide safety warning. And the accuracy and safety of maintenance are improved.

A crusher bucket comprises a frame, crushing elements comprising a movable jaw and a fixed jaw which are received in the frame, and an adjustment device which can change a distance between the jaws at an outlet of the material. The adjustment device comprises a strut having a first end and a second end which are opposite each other and which are received in a first seat which is defined in the frame and in a second seat which is defined in the movable jaw, respectively, and one or more spacers which are or can be removably inserted between the first seat and the first end of the strut through a first opening which is constructed in a side wall of the frame.

The invention relates to the field of resource recycling, in particular to environment-friendly concrete crushing and sorting equipment capable of recycling metal, which comprises connecting bottom plates, fixing frames and the like, the connecting bottom plates are arranged front and back, and the fixing frames are slidably connected between the left and right parts of the connecting bottom plates. According to the concrete crushing device, a proper number of fixing plates are installed according to the size of concrete, then the distance between the movable jaw plates is adjusted, then crushing is conducted, buffering is conducted through a buffering pad, the crushing degree can be adjusted while the connecting shell is spliced and fixed, the concrete of different sizes is crushed, the crushing efficiency is improved, and the practicability is high. And buffering can be performed during use, noise is reduced, loosening or damage of components is prevented, and use is flexible and convenient.

This utility model discloses a practical adjustable wrench with a vertical handle, comprising a wrench body and an extension sleeve. The wrench body includes a wrench head, a fixed jaw integrally connected to the top of the wrench head, a movable jaw slidably connected to the other side of the top of the wrench head, and a handle integrally connected to the bottom of the wrench head. The extension sleeve is fitted onto the outside of the handle and is threadedly connected to the handle. A detachable handle is installed at the bottom of the extension sleeve. A connecting rod is rotatably connected inside the handle. The bottom of the connecting rod passes through the bottom of the handle and has a knob fixed at its end. The top of the connecting rod is placed inside the wrench head. A transmission mechanism is provided between the connecting rod and the movable jaw. The operation logic of installing the extension sleeve after adjusting the opening avoids the inconvenience of carrying the entire long handle into a narrow space, which is a traditional tool, and significantly improves the flexibility of initial positioning. The threaded connection structure between the extension sleeve and the handle forms a rigid whole.

This utility model discloses a rotatable bolt removal and installation tool, comprising: a wrench head, one end of which is provided with a fixed jaw and a movable jaw, the movable jaw being movably positioned close to or away from the fixed jaw; a fixing member, the other end of the wrench head being rotatably mounted on one end of the fixing member via a rotating pin; a first connecting member, one end of which is detachably connected to the other end of the fixing member; a second connecting member, one end of which is detachably connected to the other end of the first connecting member; and a sleeve, the other end of which is detachably connected to the sleeve. By applying this utility model, a rotatable bolt removal and installation tool is provided. The overall length of the wrench can be adjusted through the combination of connecting members to suit confined working environments; the angle between the wrench head and the fixing member can be adjusted through the rotating pin to suit the removal and installation of bolts located in corners, thereby improving work efficiency.

The invention relates to a rail vehicle active rail holding device which comprises a rail holding mechanism detachably installed at the bottom of a bogie, the rail holding mechanism comprises a connecting base, a driving air cylinder, swing arms and a clamping assembly, the connecting base is fixed to the bottom of the bogie, and the swing arms are symmetrically hinged to the left side and the right side of the connecting base; the clamping assemblies are correspondingly arranged on the swing arms on the left side and the right side respectively. The driving air cylinder is located above the swing arm and used for controlling the swing arm to swing so that the swing arm can drive the clamping assembly to swing up and down in the vertical direction. The fixed clamping jaw and the movable clamping jaw are located on the left side and the right side of the rail correspondingly, and the movable clamping jaw can be driven to be close to or away from the fixed clamping jaw under the action of the control assembly so that the rail can be clamped and fixed or loosened. The device is stable and flexible in structure, can adapt to different working conditions, effectively enhances the safety guarantee of the train under different road conditions such as straight lines and turnouts, and greatly improves the driving safety.

The utility model relates to the technical field of jaw crushers, and discloses a jaw crusher with a screening function, which comprises a working table, a crusher body is fixedly mounted at the top of the working table, a movable jaw plate is arranged in the crusher body, a fixed plate is fixedly connected to the bottom of the right side of the working table, and the movable jaw plate is fixedly connected to the bottom of the right side of the working table. A vibration motor is fixedly installed in the middle of the top wall of the fixing plate, a screening frame is fixedly installed at the top end of the vibration motor, electric telescopic rods are fixedly installed at the front end and the rear end of the left side of the bottom of the workbench correspondingly, and the output ends of the two electric telescopic rods are fixedly connected to the left ends of the front side and the rear side of the screening frame correspondingly. According to the utility model, the vibration motor is used for vibrating the screening frame for screening, the electric telescopic rod is used for regulating and controlling, qualified materials are conveyed away through the conveying belt, and unqualified materials enter the collecting box for circular treatment, so that efficient crushing and accurate screening of the materials are realized, and the production efficiency and the product quality are greatly improved.

The utility model relates to the technical field of jaw crusher, and disclose high -efficient stone block breaker, including the jaw crusher with crushing chamber, be equipped with fixed jaw plate and moving jaw plate in the crushing chamber, still include: crossbeam, through the support device and install above the crushing chamber opening, sliding groove, along the length direction of crossbeam set up on the crossbeam, sliding plate, slidingly install in sliding groove, the sliding plate fixed mounting is on the outer wall of impact cylinder, the output shaft of impact cylinder is downward. This high -efficient stone block breaker, through setting up impact cylinder above the crushing chamber, can carry out longitudinal impact crushing to the big rock or the multi -block accumulated stone material that stuck between fixed jaw plate and moving jaw plate, has improved the crushing efficiency significantly, has reduced the manual intervention, solved the problem of crushing failure that the stone material is caused to stick in the prior art.

The utility model relates to a special crushing hopper discharge port adjusting device for an excavator, which comprises a fixed jaw plate and a movable jaw plate which are arranged in a crushing hopper, a discharge port is arranged between the movable jaw plate and the fixed jaw plate, and the discharge port adjusting device comprises a movable jaw plate toggle plate seat, a toggle plate, an inclined iron toggle plate seat, driven adjusting inclined iron and driving adjusting inclined iron, the movable jaw plate toggle plate seat is fixedly mounted on the movable jaw plate, the tapered iron toggle plate seat is fixedly mounted on the side surface of the driven adjusting tapered iron, and two ends of the toggle plate are movably connected to the side surfaces of the movable jaw plate toggle plate seat and the tapered iron toggle plate seat respectively; a driving adjusting inclined iron sliding plate is installed on the machine frame, a limiting assembly is arranged on the side, facing the movable jaw plate, of the driving adjusting inclined iron sliding plate, the driven adjusting inclined iron is installed in the limiting assembly, and an adjusting assembly is installed on the driving adjusting inclined iron. The size of the discharging port can be adjusted according to the actual condition of materials, the crushing efficiency and the crushing quality are effectively improved, the structure is stable and reliable, and the failure rate and the maintenance cost of equipment are reduced.

The present invention relates to the technical field of ore crushing, in particular to a barite powder jaw crushing device for mining and processing, which includes a frame. An eccentric shaft is rotatably connected to the top of the frame. A moving jaw frame is arranged inside the frame. The top end of the moving jaw frame is rotatably connected to the central position of the eccentric shaft. A fixed jaw frame is movably connected inside the frame. Crushing jaw plates are arranged on one side of the moving jaw frame and the fixed jaw frame adjacent to each other. Through the action of the fractal contact mechanism, multiple contact strips of the present invention move in cooperation according to the transverse profile of barite ore, so that the transverse contact positions of the multiple contact strips and the barite ore generate profile adaptation, thereby increasing the transverse contact area between the barite ore and the corresponding contact strips. The multiple contact strips can perform corresponding fractal contact according to the size and shape of multiple barite ores, improving the crushing effect and crushing rate of barite ore.

The utility model relates to a poison anesthetic ampoule bottle breaking device which comprises a box body, a power transmission mechanism, a supporting plate, a static jaw plate and a movable jaw plate, the power transmission mechanism, the supporting plate, the static jaw plate and the movable jaw plate are arranged in the box body, an inner cavity of the box body is divided into a first cavity and a second cavity, and the static jaw plate is fixedly arranged in the first cavity. The lower end of the movable jaw plate is hinged to the supporting plate, the upper end of the movable jaw plate is connected with a power transmission mechanism, feeding ports corresponding to the upper ends of the static jaw plate and the movable jaw plate are formed in the top of the box body, discharging ports corresponding to the lower ends of the static jaw plate and the movable jaw plate are formed in the supporting plate, and a storage bin used for storing cullet is arranged in the second cavity. And the feed opening is communicated with the storage bin. The whole structure is located in the box body, the external structure is simple, safety is high, and cleaning is convenient.

A platform equipped with multiple moving jaws to receive and engage tubing and casing. The platform may be mounted above a wellbore to securely hold a tubing or casing segment, preventing the segment from rotating or slipping as torque is applied to an adjacent tubing or casing segment. Methods of engaging tubing and casing using the platforms as torque is applied during makeup or loosening operations.

The utility model provides a wrench which comprises a handle, a fixed jaw capable of rotating within a certain range is installed at the end of the handle, and a movable jaw capable of moving relative to the fixed jaw is arranged on the fixed jaw. A spring used for resetting is arranged between the handle and the fixed jaw, the spring is of a spiral structure and is arranged along the rotating center of the fixed jaw, the center end of the spring is connected to the handle, and the outer end of the spring extends outwards and is connected to the fixed jaw so as to provide resetting force after the fixed jaw rotates; the spiral spring structure is adopted to replace a traditional spiral cylindrical spring, the spring can be arranged along the rotating center of the fixed jaw in a plane mode, the structure is compact, the space between the handle and the fixed jaw is effectively saved, the problem that the spring interferes with the surrounding structure or is clamped is solved, and the service life of the spring is prolonged. Meanwhile, the problem of efficiency loss caused by inconsistency of the axis of the cylindrical spring and the movement direction of the wrench can be solved, stable and reliable reset force can be provided, the controllability of the wrench is improved, and the service life of the wrench is prolonged.

The invention relates to the technical field of crushing devices, and particularly discloses a metal slag graded crushing device which comprises a rack, a movable jaw, a fixed jaw and a crushing plate arranged on the movable jaw or the fixed jaw. The crushing plate is divided into a plurality of module plates capable of being independently disassembled and assembled in the vertical height direction, and the multiple module plates are sequentially stacked to form the complete crushing plate. The module plate is matched and mounted with guide grooves correspondingly formed in the movable jaw and the fixed jaw through a guide structure arranged on the back of the module plate, so that a crushing load generated in the crushing process is transmitted to the rack through the guide structure; the movable jaw and the fixed jaw are each provided with a pressing structure used for pressing the uppermost module plate and the lowermost module plate, and the modular design of the crushing plate is achieved by dividing the crushing plate into the multiple module plates capable of being independently disassembled and assembled. By means of the design, the lowest module plate which is worn most seriously in the crushing process can be replaced independently, and the situation that a traditional whole crushing plate is integrally scrapped due to local wear is avoided.

The utility model discloses a monkey wrench convenient to lock, which belongs to the technical field of monkey wrenches and comprises a wrench body and a handle, the wrench body comprises the handle fixedly mounted on the side face, a groove is formed in an inner cavity of the wrench body, a movable jaw adjusting and locking component is arranged in an inner cavity of the groove, and a movable jaw adjusting and locking component is arranged in the movable jaw adjusting and locking component. A handle adjusting assembly is arranged on the outer surface of the handle. The position of the movable jaw can be adjusted through mutual cooperation of the gear, the sector gear and the rotating rod, the size of an opening can be changed to adapt to nuts or bolts of different sizes, the situation that the precision is reduced when the size of the opening of the movable jaw is adjusted due to friction abrasion generated by traditional nut adjustment is avoided, and therefore abrasion is reduced, and the working efficiency is improved. The adjusting precision and stability are improved, the operation process is simplified, the working efficiency is improved, unnecessary reverse movement of the gear when a worker loosens the rotary button can be prevented through the pawl and the fixing rod, and therefore the position of the movable jaw is kept fixed, and locking is achieved.

The utility model relates to the technical field of crusher equipment, in particular to a jaw crusher gap adjusting device which comprises a rack, a mounting block is fixedly connected to one side of the inner wall of the rack, a mounting plate is arranged on the other side of the mounting block, a fixed jaw plate is arranged on the other side of the mounting plate, and a movable jaw plate is arranged on the other side of the fixed jaw plate. The surface of the mounting block is fixedly connected with two mounting seats which are symmetrically distributed, and the inner side of the mounting plate is fixedly connected with two hinge rods which are symmetrically distributed; the shifting block is pulled to separate the limiting rod from the limiting hole to release the limiting of the fixed rod, so that the angle of the fixed jaw plate can be adjusted, the effect of changing the gap between the fixed jaw plate and the movable jaw plate is achieved, the operation is simple and convenient, and automatic resetting can be achieved under the action of the spring by loosening the shifting block after adjustment is completed; and the limiting rod is driven to be inserted into the limiting hole again to complete automatic limiting, the fixed jaw plates with different thicknesses are replaced in cooperation with the auxiliary assembly, the gap adjusting range can be widened, and then the application range of the equipment is widened.

Improvements in a pipe wrench that used a quick adjustment mechanism to secure and release the position of the moving jaw. With the quick adjust wrench the operator can release the locking teeth, slide the adjustable jaw, and release the locking teeth to lock the position of the moving jaw. The locking teeth move in a linear position towards or away from the moving jaw post. The operator can pull the locking mechanism, push the locking mechanism, or pinch the locking mechanism to lift the teeth out of engagement. The wrench uses magnetic forces to ensure that the teeth are engaged when the slider is released. The use of a magnet ensures that the movable jaw is normally locked in position unless an operator is physically displacing the locking mechanism.

The utility model discloses a jaw crusher capable of preventing blockage of a machine inlet, which relates to the technical field of jaw crushers and comprises a crusher body, the crusher body is provided with the machine inlet, a movable jaw plate and a fixed jaw plate, the movable jaw plate and the fixed jaw plate are positioned on opposite side walls in the machine inlet, and the movable jaw plate moves close to and away from the fixed jaw plate circularly and alternately. The inserting hole is obliquely formed towards the lower portion of the side away from the fixed jaw plate, and a tamping hammer is inserted into the inserting hole in a sliding mode. The ramming hammer can move in the inserting hole in a reciprocating mode, and the end, located in the machine inlet, of the ramming hammer can conduct crushing operation on one side edge in the machine inlet. According to the utility model, the plurality of ramming hammers are used for ramming upwards in a multi-point inclined manner on the inner side of the machine inlet while the mineral aggregate is crushed, so that the effect of pushing large-particle mineral aggregate upwards to wriggle is achieved, and the situation that the large-particle mineral aggregate is blocked in the machine inlet to cause blockage of the machine inlet is avoided; and meanwhile, a plurality of ramming hammers can be used for crushing large-particle mineral aggregates, a specially-assigned person does not need to be arranged for guarding, the cost is reduced, and the device is simple and practical.

The utility model relates to FFC processing field especially, a kind of FFC automatic single angle of folding and fixed rubber-coated equipment, including machine table, angle folding mechanism, angle adjusting mechanism and fixed rubber-coated mechanism, angle folding mechanism, angle adjusting mechanism and fixed rubber-coated mechanism are sequentially arranged along the length direction of machine table;Angle folding mechanism includes angle folding seat, the angle adjusting mechanism includes fixed jaw, angle adjusting assembly and moving jaw, first slide rail is equipped on machine table, angle folding seat and angle adjusting assembly are moved and set along first slide rail;Fixed jaw is located above the moving direction of angle folding seat, and fixed jaw is movable towards angle folding seat;Angle adjusting assembly includes moving seat, rotating seat and angle adjusting jaw, rotating seat is rotatably provided on moving seat, and rotating seat is connected with angle adjusting jaw;Moving jaw is movably arranged between angle adjusting assembly and fixed rubber-coated mechanism.

The utility model discloses a pipe expanding tool, which relates to the field of pipe expanding, and is characterized in that a driving fixing clamp is mounted on the inner surface of a mounting plate, an expanding pipe is mounted in the driving fixing clamp, the driving fixing clamp is fixedly mounted on the inner surface of the mounting plate, and the expanding pipe is nested in the driving fixing clamp; a fixed limiting frame is mounted on the upper surface of the mounting plate, and an elastic sliding mechanism for conducting auxiliary supporting on the expanded pipe is mounted in the fixed limiting frame. According to the pipe expanding tool, during expanding operation of a pipe, when an expanding abutting block continuously expands the diameter forwards along the interior of the expanded pipe and gradually moves to approach a movable clamping jaw, the expanded pipe can be enlarged to eject the movable clamping jaw outwards, and the movable clamping jaw slides outwards along the interior of a sliding limiting frame; and in the sliding process, the compression spring is compressed, so that the diameter-expanded pipe is always kept fixed, and the stability of the diameter-expanded pipe is improved through the design.

The invention belongs to the technical field of crushers, and particularly relates to a phthalocyanine blue pigment crude product pressure crushing all-in-one machine which comprises a shell. A feeding hole is formed in the top of the shell; a discharge hole is formed in the bottom of the shell; the inner wall of one side of the shell is fixedly connected with a fixed jaw plate; a movable jaw plate is arranged on the side, away from the fixed jaw plate, in the shell. The top of the movable jaw plate is rotationally connected with a pair of transmission plates; a straight rod is fixedly connected between the two transmission plates; the ends, away from the movable jaw plate, of the two transmission plates are rotationally connected with a rotary disc. Driving wheels are fixedly connected to the sides, away from each other, of the two rotating discs, a pressing rod at a supporting frame is driven by a driving assembly to be inserted into and lifted up towards the position between a movable jaw plate and a fixed jaw plate, so that the crushing effect on the pigment cakes between the movable jaw plate and the fixed jaw plate is achieved, and excessive pigment cakes are prevented from slipping; and the pigment is accumulated between the movable jaw plate and the fixed jaw plate, so that the crushing efficiency of the pigment is influenced.

The invention discloses a shock absorber piston clamping jaw with an intelligent detection function for assembly and assembly equipment, and relates to the technical field of mechanical clamping jaws. Comprising a connecting plate, a pressing rod is slidably arranged at the front end of the connecting plate, a plurality of infrared sensors are fixed to the front end of the connecting plate, the pressing rod is slidably sleeved with a push plate, an adjusting mechanism is arranged at the lower end of the connecting plate, a pneumatic clamping jaw is connected to the lower portion of the adjusting mechanism, two moving jaws are arranged at the front end of the pneumatic clamping jaw, and clamping jaws are arranged on the outer sides of the moving jaws. A lifting mechanism is arranged between the movable claw and the clamping claw, a correcting flat plate is arranged below the pneumatic clamping claw, and a telescopic mechanism used for controlling the correcting flat plate to move is arranged below the pneumatic clamping claw. In the piston installation process, whether the piston inclines or not and the center position of the piston can be detected and corrected, and the reliability and efficiency of automatic production can be improved.

The utility model relates to the technical field of hardware tools, and discloses an adjustable double-opening wrench which comprises a connecting rod, a wrench head, a movable jaw plate, a telescopic assembly, a sliding assembly and an auxiliary assembly. A wrench head is fixedly arranged at the end part of the connecting rod; a movable jaw plate is arranged at the other end of the wrench head; the telescopic assembly is arranged on the connecting rod, the sliding assembly is arranged in the movable jaw plate, and the auxiliary assembly is arranged in the sliding assembly; according to the wrench, the connecting sleeve is connected with the connecting rod in an embedded mode, a user can conveniently adjust the length of the wrench according to operation space and torque by means of the clamping protruding head, the limiting plate, the positioning hole, the mounting hole and a hand-turning screw, various working conditions can be met, and convenience is improved; in the sliding assembly, a sliding groove, a button and a clamping groove are combined, so that the movable jaw plate is conveniently adjusted to be matched with nuts and bolts, and tool carrying is reduced; in the auxiliary assembly, a linkage rod, a fixing shaft and other components cooperate, smooth adjustment is guaranteed, the structure is reliable, and efficiency is improved.

The invention relates to the technical field of building recycling, and discloses a building energy-saving and environment-friendly device which comprises a base, the top of the base is fixedly connected with a crusher rack, the interior of the crusher rack is fixedly connected with a static jaw plate, and the interior of the crusher rack is slidably connected with a first movable jaw plate; an eccentric shaft is rotatably connected to the interior of the crusher rack, a flywheel is fixedly connected to the outer surface of the eccentric shaft, a crushing protection mechanism is rotatably connected to the outer surface of the eccentric shaft, and a horizontal limiting mechanism and a limiting clamping mechanism are fixedly connected to the top of the crusher rack. According to the construction waste crushing device, primary crushing treatment of construction waste is achieved, the situation that large-size waste blocks a feeding port can be avoided, and therefore it is guaranteed that the crushing process is conducted smoothly; and loose parts on the surface of the waste can be removed, the jumping problem caused by clamping of the crusher is preliminarily prevented, and stable and safe operation of the whole crushing process is guaranteed.

The invention relates to the technical field of metal ore crushing, and particularly discloses a metal ore pretreatment device and system.The metal ore pretreatment device comprises a movable jaw piece and a pushing mechanism, the movable jaw piece comprises a supporting part, a movable jaw plate and a locking part, the supporting part and the locking part are both connected to the movable part, and the movable jaw plate is connected between the supporting part and the locking part in a limited sliding mode; the pushing mechanism comprises a second driving source, a transmission part and a pushing part, the second driving source is connected to the rack, the pushing part is installed on the moving part, the transmission part is connected between the second driving source and the pushing part, the pushing part is connected with the movable jaw plate, the second driving source drives the transmission part, and the second driving source drives the transmission part. The transmission part drives the pushing part to operate, so that the movable jaw plate is driven to transversely move back and forth; according to the metal ore pretreatment device and system, shearing force is generated on metal ore through reciprocating transverse movement of the movable jaw plate, and the metal ore is further crushed.

The utility model provides a concrete and stone crushing device and concrete production equipment, and belongs to the field of mixed concrete crushing, the concrete and stone crushing device comprises a first crushing mechanism, a filtering mechanism and a second crushing mechanism, the first crushing mechanism comprises a jaw crusher body, and the jaw crusher body comprises a fixed jaw plate and a movable jaw plate; the filtering mechanism is connected to a screen of the movable jaw plate, and the screen is located below a discharge port of the jaw crusher body; the second crushing mechanism comprises a first crushing roller and a second crushing roller, a material crushing gap is formed between the first crushing roller and the second crushing roller, the material crushing gap is located under a discharging port of the jaw crusher body, a plurality of first material crushing protrusions are arranged on the periphery of the first crushing roller, and a plurality of second material crushing protrusions are evenly arranged on the periphery of the second crushing roller. Compared with the prior art, the concrete and stone crushing device provided by the utility model solves the technical problem that crushed concrete produced by the existing crusher cannot be directly reutilized.

The utility model relates to the technical field of jaw crushers, in particular to an abrasion compensation device for a jaw crusher, which comprises a jaw crusher, a fixed jaw toothed plate is fixedly connected in the jaw crusher, a movable jaw toothed plate is arranged in the jaw crusher, a cavity groove is formed in the jaw crusher, and a movable jaw toothed plate is arranged in the cavity groove. The surface of the cavity groove is movably connected with an extrusion block; the wear compensation device for the jaw crusher has the beneficial effects that stones are crushed through the fixed jaw toothed plate and the movable jaw toothed plate when being put into the jaw crusher, and the surfaces of the extrusion blocks are movably connected with the surfaces of the cavity grooves; when the hydraulic cylinder is started to enable the extrusion block to move on the surface of the cavity groove, the adjustable jaw toothed plate is arranged on the surface of the cavity groove, so that the distance between the adjustable jaw toothed plate and the movable jaw toothed plate can be adjusted, and the block size of crushed stones between the movable jaw toothed plate and the adjustable jaw toothed plate is changed.

The present application relates to the technical field of spodumene processing, and discloses a jaw crusher for spodumene fine crushing, which comprises a jaw crusher body, a moving jaw plate and a stationary jaw plate arranged in the jaw crusher body for crushing spodumene, a crusher power assembly arranged on the jaw crusher body and used for providing crushing power for the moving jaw plate and the stationary jaw plate, and a discharging conveying device arranged on the jaw crusher body, wherein the swing material cleaning assembly is also reciprocatingly swung when unblocking the spodumene in the jaw crusher body, so that the arc-shaped hook plate can spread the blocked spodumene in the jaw crusher body to both sides and simultaneously move upward, which can effectively clean the blocked spodumene, avoid the safety risk and low work efficiency caused by manual cleaning in the traditional way, and realize automatic cleaning after the moving jaw plate and the stationary jaw plate are blocked.