9results about How to "Guaranteed traction" patented technology

The present invention relates to the field of screening, and specifically provides a multi-stage ore screening device, which aims to solve the problem of reduced filtering efficiency and poor screening effect caused by filter blockage in current ore screening devices. The multi-stage ore screening device of the present invention includes a device housing and a reset component, a bending component, and a first filter plate group and a second filter plate group arranged up and down connected to the device housing. The device housing is formed with a feed chamber and a plurality of screening chambers connected to the feed chamber. The reset component can provide a pulling force to straighten the first filter plate group and the second filter plate group. The first filter plate group and the second filter plate group are provided with a bending component on their sides. The bending component can overcome the pulling force provided by the reset component to the first filter plate group or the second filter plate group and fold the two adjacent first filter plates or the second filter plates to one side, so as to clean the filter plates by beating and vibrating, avoid clogging the filter holes with ores, and ensure the screening effect.

The utility model discloses a vibration damping type catenary positioning support for a high-speed railway, which relates to the technical field of railway catenary equipment and comprises a flat cantilever, an inclined cantilever, a positioning pipe and a mounting plate, rod insulators are fixedly mounted at one ends of the flat cantilever and the inclined cantilever, and the mounting plate is positioned at one ends of the rod insulators and matched with the rod insulators. The device has the advantages that the length of the adjusting bolt is adjusted by rotating the adjusting bolt, then the tightness of the traction cable is adjusted, the traction cable is kept in a tight state, and the traction cable can be fixed by sliding the T-shaped sliding block. The tooth set is meshed with the gear, so that it is ensured that the length of the adjusting bolt is fixed, the tightened traction cable can ensure traction force on the flat cantilever, the flat cantilever is stably installed, the overall stability and practicability of the device are improved, and stable positioning of the overhead line system is ensured.

The present invention relates to a loader hydraulic system and a loader, belonging to the technical field of engineering machinery, comprising a hydraulic oil tank, a double gear pump, a third hydraulic pump, a working hydraulic cylinder and a steering hydraulic cylinder; the double gear pump comprises a first hydraulic pump and a second hydraulic pump, the first hydraulic pump, the second hydraulic pump and the third hydraulic pump are all connected to the hydraulic oil tank, the steering hydraulic cylinder is connected to a steering gear, and the third hydraulic pump is connected to the working hydraulic cylinder through a multi-way valve; the priority valve is connected to the multi-way valve, and a priority unloading valve is also connected between the double gear pump and the priority valve; the purpose of the present invention is to overcome the deficiencies in the prior art, to provide a loader hydraulic system and a loader, to avoid the heavy idle speed and excessive energy loss of the engine at low speed, to ensure the power of the engine and the operating efficiency of the whole machine, to reduce the complexity of the hydraulic system, and to make manufacturing, maintenance and care more convenient.

The utility model discloses a device for releasing the twist alarm of inner milling center frame, which is used for milling the main journal of crankshaft and the connecting rod journal. A sliding table is arranged on the left side of the center frame and connected with the guide rail horizontally arranged on the bed. A connecting rod is fixed on the sliding table. A frame is fixedly connected with the sliding table. A connecting plate is arranged on the frame. A through hole is drilled on the lower right side surface of the center frame. A second oil cylinder is arranged on the lower right side surface of the center frame. A guide hole is drilled on the end surface of the center frame close to the second oil cylinder. A traction mechanism is arranged between the two guide grooves and at the lower end of the center frame. A first oil cylinder is vertically downwardly arranged on the upper surface of the center frame above the traction mechanism. The piston rod of the first oil cylinder is directly inserted into the square hole of the center frame. When the center frame is horizontally moved, the sliding table drives the connecting rod and the connecting plate to move. The piston rod of the first oil cylinder is inserted into the connecting rod in the guide hole. The piston rod of the first oil cylinder tightly presses the connecting plate on the lower side of the square hole. Since the center frame has three points that can be affected by the traction force, the parallel traction force between the center frame and the guide rail can be effectively maintained.

The present invention relates to the technical field of welding rod manufacturing, and discloses a processing equipment for alloy steel welding wire, including a shell, the outer wall of the shell is fixedly connected with a support block 1, the outer wall of the support block 1 is fixedly connected with a motor 1, the outer wall of the support block 1 is rotatably connected with the inner wall of the reel through a rotating shaft, the inner wall of the shell is rotatably connected with the outer wall of the drum through a bearing, the outer wall of the drum is rotatably connected with the inner wall of the belt, the inner wall of the shell is provided with an assembly groove, the groove wall of the assembly groove is fixedly connected with a motor 2, and the output end of the motor 2 is transmission-connected with the inner wall of the belt. The present invention is provided with a wire drawing mechanism, and the wire drawing mechanism senses the different pulling forces generated by the different thicknesses of the welding wire during the wire drawing process, so that the pressure mechanism responds to different situations, prevents the welding wire from breaking during the traction process, ensures the uniformity of the wire drawing, and enables the processing equipment for alloy steel welding wire to maintain stable traction to draw the welding wire.

The utility model relates to the technical field of pipe processing, and discloses a pipe production device convenient to fix, which comprises a mounting plate, and a driving motor is fixedly mounted on the surface of the mounting plate. According to the pipe production device convenient to fix, a rotating rod rotates on the surface of a movable frame to fix the surface of a pipe, then a driving motor drives a threaded rod to rotate, the movable frame moves to drive the pipe to be pulled, a rolling shaft frame guarantees stable movement of the pipe, meanwhile, the rotating motor rotates to drive a lead screw to rotate, and a moving block moves; secondly, due to the arrangement of the rubber protruding blocks, the cambered surface of the pipe is better attached, along with traction of the pipe and rotation of the roller, the rubber pad is attached to the surface of the pipe, and the rubber protruding blocks limit the cambered surface of the upper side of the pipe; therefore, the traction after the pipe is fixed is ensured.

The application discloses a cable processing threading machine, and relates to the technical field of cable processing, which comprises a workbench, a traction assembly, a touch panel, a fixed rack and a movable rack, and further comprises two groups of threading assemblies, each of which comprises a top plate, a limiting piece, a flexible rope and a plurality of threading blocks. Through the improved combination state of the threading blocks and the cooperation of the flexible rope, all the drooping threading blocks can be quickly and synchronously reset to a horizontal linear type through the "pulling" action of the flexible rope. For multi-core gray cable, the original scheme needs to be manually pushed back block by block, while the present scheme only needs to be pulled once, and the operation time is shortened from minutes to seconds. The flexible rope allows the threading blocks to freely find the lowest energy state under the action of gravity, and even if the gap between the plug-in surfaces changes due to slight wear, the V-shaped state can still be naturally formed, reducing the operation difficulty of the user.

The invention relates to the technical field of welding rod manufacturing, and discloses alloy steel welding wire machining equipment which comprises a shell, a first supporting block is fixedly connected to the outer wall of the shell, a first motor is fixedly connected to the outer wall of the first supporting block, and the outer wall of the first supporting block is rotationally connected with the inner wall of a winding drum through a rotating shaft; the inner wall of the shell is rotationally connected with the outer wall of the roller through a bearing, the outer wall of the roller is rotationally connected with the inner wall of the belt, an assembling groove is formed in the inner wall of the shell, a second motor is fixedly connected to the groove wall of the assembling groove, and the output end of the second motor is in transmission connection with the inner wall of the belt. According to the wire drawing device, the wire drawing mechanism is arranged, the wire drawing mechanism induces different tensile forces generated due to different thicknesses of welding wires in the wire drawing process, so that the pressure mechanism responds to different situations, the welding wires are prevented from being broken in the traction process, and the uniformity of wire drawing is guaranteed; and the alloy steel welding wire processing equipment can keep stable traction to perform wire drawing on the welding wire.

The utility model relates to the technical field of transfer of die-cutting waste edges, in particular to a transfer device for die-cutting waste edges, and solves the problems that according to long-time production process summary in the prior art, according to the specifications of waste paper recycling boxes, the length is 1.5 m, the width is 0.85 m and the height is 1.2 m, at least two waste paper recycling boxes are needed for each class, eight waste paper recycling boxes need to be arranged for four die-cutting machines, and the production cost is low. The collected waste paper edges need to be packaged by two workers, time and labor are wasted, and a waste paper recycling box occupies a large space. A transfer device for die cutting waste edges comprises a pipeline, one side of the pipeline is detachably connected with a cover plate, an exhaust fan is installed on one side of the pipeline, and one end of the exhaust fan is fixedly connected with a conveying pipe penetrating through the side wall of the pipeline. According to the utility model, a waste paper recycling box for collection, manual transfer and manual treatment of the waste paper edges are not needed, so that the production efficiency is improved, and manpower resources and production site space are saved at the same time.