17 results about "Crankpin" patented technology

A ball joint assembly (34, 36, 38) of a crank (30, 32) and a connecting rod (26, 28) comprising a crank pin (40) fixed to the crank (30, 32) and a socket (58) fastened to the connecting rod (26, 28), characterized in that the ball portion of the crank pin (70) comprises lateral flat faces (48) and in that the socket (58) comprises an axial lower end (74) comprising on the one hand an opening (76) for the passage of the crank pin (40) into an internal cavity (70) and on the other hand a barrier wall (78) extending from the peripheral edge (77) delimiting the opening (76) of said axial lower end (74), the barrier wall (78) extending through the opening (76) to form a reduced passage section, maintaining the crank pin (40) in the internal cavity (70) of the socket (58).

An assembly of a connecting rod and a crankshaft including a pair of crank webs 6 and a crank pin 5. A reservoir 21 for lubricating oil between a big end 10 of the conrod and the crank pin, and a jett

An article loading system that includes a double parallelogram mechanism provided to obtain a circular motion and a linear motion. Further, a crank pin is provided to drive the double parallelogram mechanism. Furthermore, the circular motion and the linear motion of the double parallelogram mechanism is obtained in a single cranking motion of the crank pin. Moreover, the cranking motion of the crank pin is facilitated by a pinion connected to the crank pin. Further, a tray is provided to hold an article. Further, the tray is attached to the double parallelogram mechanism. Additionally, an actuator is provided to rotate the pinion. Further, the rotation of the pinion facilitates the cranking motion of the crank pin to drive the double parallelogram mechanism.

This invention relates to a crankshaft having a crank pin with a continuously variable offset based on the rotational operating speed of a tool, in order to provide high torque under high loads and higher speeds as the load decreases. The crankshaft includes a crankshaft base, a crank pin slider, and a biasing member. The crankshaft base is connected to the tool's drive mechanism, the crank pin slider has a crank pin connected to the tool's output, and the biasing member biases the crank pin slider relative to the crankshaft base. As the crankshaft's rotational speed increases, inertial effects on the crank pin slider cause it to move to a larger offset position against the biasing member, allowing for increased tool output speed. This allows a power ratchet-type tool to operate with variable torque and speed based on torque loads.

This utility model relates to the technical field of crankshafts for plunger pumps, solving the technical problem that existing crankshafts for plunger pumps require extensive drilling, and the drilling process is cumbersome and lengthy. Specifically, it relates to a crankshaft for plunger pumps, comprising two symmetrically aligned connecting shafts serving as supporting bases. Several journals are equidistantly distributed between the two connecting shafts, and crank pins are fixedly connected between the journals. Each journal has a rotating bore, and radial oil holes are formed inside the rotating bore. The radial oil holes on the same journal are interconnected. Due to the crank pin configuration, the phase angle difference Δθ = 360°*(N-1) / 2N between adjacent crank pins ensures uniform force distribution on the crankshaft, reduces the time adjacent crank pins are simultaneously stressed, and reduces hydraulic pulsation. The oblique oil hole, oil outlet hole, and corresponding radial oil hole on each crank pin are all located within the phase angle plane of that crank pin, and the size, position, and angle of the corresponding holes are consistent, facilitating batch drilling and tooling manufacturing.

The present disclosure relates to a rotary crankpin turntable actuator whose basic operation concept involves moving a product or workpiece instead of moving a tool. The actuator eliminates the need to use robotic arms for repetitive automated manufacturing. Instead, only one fixed tool is needed. The actuator will perform the necessary motions to work the piece. The rotary crankpin turntable creates a desired trajectory (7) in one or more defined dispensing-inspection-assembly (DIA) points (5) and is made up of four components: a rotary crankpin (1), a center shaft (2), a pinion (3), and a transporter (4). It has a gear-based motion transmission system for the rotary crankpin's (1) positioning.

This utility model belongs to the field of crankshaft connecting rod technology and discloses a crankshaft connecting rod assembly for a motorcycle engine. It includes two base plates, with an assembly mechanism shared on the inner sides of both base plates. One side of one base plate has a meshing mechanism. The assembly mechanism includes a long half-shaft and a short half-shaft, one end of which is fixedly connected to one side of each of the two base plates. A counterweight is provided on one side of each base plate, and a crank pin is shared on one side of both base plates. A rotating rod is fixedly attached to one end of the crank pin. This utility model, through the assembly mechanism, provides stable structural support and precise rotational connection for the crankshaft connecting rod assembly. It also helps balance the inertial force during engine operation, reducing vibration. Furthermore, the meshing mechanism enables reliable connection and flexible disassembly, further enhancing the tightness and stability of the meshing, ensuring smooth and efficient power transmission.

This application relates to a device and method for removing a crank pin assembly from a pumping unit. The device includes: an installation assembly for installing a connecting assembly and an ejection assembly; a connecting assembly for connecting a crank and the installation assembly; the connecting assembly is disposed on the installation assembly and connected to the crank; and an ejection assembly for ejecting the crank pin assembly from the crank; the ejection assembly is disposed on the installation assembly and directly opposite the crank pin assembly. In practical use, this pumping unit crank pin assembly removal device replaces the traditional method of hammering the crank pin with a hydraulic jack, reducing the intensity of personnel operation and safety risks. Simultaneously, the removal device is securely connected to the crank with bolts, and the jack is placed inside a fixed cylinder, eliminating the risk of workpiece falling and injuring people. Furthermore, the jack and the crank pin are on the same axis, ensuring uniform force on the crank pin and reducing jamming caused by uneven force distribution.

The present application belongs to the technical field of fault detection of beam pumping unit, and particularly relates to a beam pumping unit crank pin bearing fault diagnosis method. The method comprises: obtaining the horse head displacement curve and the indicator diagram of the beam pumping unit, and determining the crank pin bearing fault of the pumping unit when the horse head displacement curve and the indicator diagram in a certain stroke satisfy any of the following conditions: burrs appear in the corresponding points of the first half of the horse head displacement curve in the horse head upward process, and the loading line in the indicator diagram is twisted; burrs appear in the corresponding points of the first half of the horse head displacement curve in the downward process of the horse head, and the unloading line in the indicator diagram is twisted; burrs appear in the corresponding points of the first half in the upward process of the horse head and in the corresponding points of the first half in the downward process of the horse head, and the loading line and the unloading line in the indicator diagram are twisted. The method does not need to be inspected by a person on the site, can simply, quickly and timely find the crank pin bearing fault of the pumping unit, and ensures the normal operation of the pumping unit.

This utility model relates to a connecting rod balancing mechanism for a beam pumping unit, comprising a lower connecting rod joint, a crank pin bearing housing, a crank pin, a crank, a crank pin bearing cover, and a crank pin bearing. The lower connecting rod joint and the crank pin bearing housing are fixedly connected as an integral connecting rod-crank pin structure. The key feature is that a connecting rod balance box is connected to the lower connecting rod joint or the crank pin bearing housing, forming the connecting rod balancing structure of the beam pumping unit. The connecting rod balance box is connected to the lower connecting rod joint or the crank pin bearing housing via a flange or pin. This utility model achieves a new balancing method by setting a balance box at the lower end of the connecting rod or the crank pin bearing housing. The counterweight is set at the lower end of the connecting rod or the crank pin bearing housing, reducing the force on the crank pin and lowering the risk of crank pin breakage. It also avoids the drawback of large inertial loads in beam balancing.

This invention relates to the field of metal forming and processing technology, specifically disclosing a dynamic balancing structure for a press, comprising: a press body, a drive component, a transmission assembly, a rotating assembly, a balance block, and a stamping assembly; the drive component is mounted on the press body and drives the rotating assembly to rotate via the transmission assembly; the rotating assembly includes a crankshaft, a crank pin, and a crank arm, wherein the eccentricity of the middle part of the crank pin is greater than the eccentricity on both sides, forming an asymmetrical eccentric structure, and the crank arm is hinged to the crank pin; the dynamic balancing structure of this invention uses a customized fan-shaped balance block that rotates synchronously with the crankshaft, which can generate centrifugal inertial force opposite to that of reciprocating motion components such as the crank pin and the lifting piston, effectively counteracting the inertial force and vibration during operation, and significantly reducing the vibration and noise of the entire machine.

The invention concerns a crank pin for a connecting rod of a wiper-actuating linkage system, the crank pin being configured to be received in a complementary inner cavity of a ball joint of the linkage system, and comprising a truncated spherical portion having at least one spherical sector and at least one truncated sector. The invention also concerns a complementary ball joint. The invention also concerns a corresponding linkage system and the method for assembling a connecting rod of such a system.

1. The name of the design product: pumping unit crank pin assembly (maintenance-free). 2. The use of the design product: for a pumping unit crank pin assembly. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

A walking beam body for a beam pumping unit. The invention includes a walking beam body, a crank, and a connecting rod. The lower end of the connecting rod is hinged to the crank via a crank pin, and the crank has two or more crank pin holes. The upper end of the connecting rod is hinged to a tail shaft seat. An adjustment device is provided on the bottom surface of the walking beam body between the central shaft seat and the tail walking beam body, and the tail shaft seat is connected to the adjustment device. The bottom surface of the walking beam body has three or more pairs of adjustment device mounting holes arranged longitudinally for adjusting the installation position of the tail shaft seat. The stroke of the pumping unit is adjusted by adjusting the longitudinal position of the tail shaft seat and the walking beam body and / or the connection position of the lower end of the connecting rod to the crank. Its advantages are: a reasonable structural design; by adjusting the installation positions of the upper and lower ends of the connecting rod, various stroke lengths can be rationally configured to adapt to different load conditions and meet the process requirements of different strokes in mining operations; the suspension structure of the tail walking beam body can prevent the pumping unit from shaking due to tail walking beam skew caused by increased stroke frequency.

An automotive crankshaft includes a crankshaft casting made of nodular cast iron. The crankshaft casting includes a plurality of main journal coaxially aligned on a common crankshaft casting axis. A plurality of crankpin journal is fixedly connected to the main journal by a separate web. A plurality of lightening holes integrally form a separate lightening hole of the plurality of lightening holes within a separate crankpin journal of the plurality of crankpin journals during casting. A bubble space is positioned proximate to a middle portion of a selected lightening hole of the plurality of lightening holes of the crankpin journal. The bubble space locally increases a passage size of the selected lightening hole of the plurality of lightening holes and lightens a mass of the separate crankpin journal of the plurality of crankpin journals.

This invention relates to a measuring fixture and method for measuring the parallelism and eccentricity of the crankpin neck and main journal of a crankshaft. The measuring fixture includes a single-crank crankpin neck sample, a double-saddle measuring instrument stand, and a dial indicator. The single-crank crankpin neck sample simulates the main journal and crankpin neck of the crankshaft. The double-saddle measuring instrument stand is used in conjunction with the single-crank crankpin neck sample and the dial indicator to zero the dial indicator, and to measure the eccentricity and parallelism of the crankpin neck relative to the main journal. This invention uses two dial indicators, which can measure both the eccentricity between the crankpin and main journal and the parallelism between the crankpin and main journal, solving the problem of measuring the parallelism between the crankpin and main journal during crankshaft crankpin neck grinding and eliminating quality risks. Furthermore, the use of a double-saddle measuring instrument stand improves the rigidity and stability of the measuring fixture.