18 results about "Hydraulic tappet" patented technology

The utility model relates to the technical field of speed reducer maintenance, in particular to an oil slinger dismounting tool for a rolling mill gearbox, which comprises a three-section type fast-assembly clamp and a three-jaw type hydraulic puller, three holding arms of the fast-assembly clamp are matched to hold an oil slinger, the hydraulic puller is detachably screwed with connecting nuts on the three holding arms of the fast-assembly clamp through three long screw rods, and the three long screw rods are connected with the fast-assembly clamp. A hydraulic ejector rod is installed in the center of a triangular supporting frame of the hydraulic puller, and the hydraulic ejector rod coaxially abuts against the outer end face of the gear shaft and is used for applying force to pull the three holding arms and the oil slinger. Three replaceable hooping sleeves are correspondingly arranged on the inner sides of three embracing arms of the fast-assembling clamp, a C-shaped clamping groove used for clamping an oil slinger is formed in the inner side of each hooping sleeve, and the hooping sleeves are connected with the cambered surface T-shaped grooves in the inner sides of the embracing arms in a sliding and inserted mode through the cambered surface T-shaped tables of the connecting bases. According to the dismounting tool, the oil slinger is locked through the fast-assembling clamp, operation is fast and reliable, the dismounting tool can be switched to be suitable for oil slingers with different outer diameters, and the hydraulic puller enables drawing operation of the oil slinger to be labor-saving and safe.

The utility model provides a hydraulic tappet oil recharging device, which relates to the technical field of automobile accessory processing, and comprises a device body, a soaking pool is arranged on the top of the device body, a support frame is arranged on two sides of the top of the device body and above the soaking pool, and a plurality of hydraulic cylinders are arranged on the top of the support frame. A soaking pool is arranged in the supporting frame, a plurality of plug pins are arranged below the supporting frame and located above the soaking pool, a fixing base is arranged in the soaking pool, a plurality of fixing holes are formed in the top of the fixing base, fixing assemblies are arranged on the two sides of the interior of each fixing hole, and hydraulic tappet bodies are arranged in the fixing assemblies.

The application provides an engine valve train detection method, a hydraulic tappet device and electronic equipment. The method comprises the following steps: collecting a first torque set of a flywheel end of an engine when a hydraulic tappet is installed in the valve train of the engine, wherein the first torque set comprises torques collected under multiple engine operating conditions; collecting a second torque set of the flywheel end of the engine when a hydraulic tappet device is installed in the valve train of the engine after the hydraulic tappet is removed, wherein the valve train of the engine stops running after the hydraulic tappet is removed, the hydraulic tappet device is used to block an oil passage hole of a cylinder head oil passage of the engine, and the second torque set comprises torques collected under multiple engine operating conditions; and obtaining a detection result representing friction loss of the valve train of the engine according to a difference between torques under the same engine operating condition in the first torque set and the second torque set. Thus, the problem that the friction loss of the valve train of an entity cannot be detected can be solved.

The utility model provides an anti-impact hydraulic tappet, and belongs to the technical field of automobile parts. The hydraulic tappet solves the problem that an existing hydraulic tappet is prone to generating noise when being impacted. The impact-resistant hydraulic tappet comprises a tappet shell, a mounting cavity is formed in the tappet shell, a plunger is arranged in the mounting cavity, guide grooves are symmetrically formed in the bottom of the mounting cavity, a supporting plate spring is clamped between the guide grooves, a sealing ball is arranged on the supporting plate spring, the top of the sealing ball abuts against the plunger, and an abutting arc embedded with the sealing ball is arranged at the bottom of the plunger. The shock-resistant and low-noise shock absorber has the advantages of being resistant to shock, low in noise and rapid in response.

The present application belongs to the technical field of rocker arm detection, and discloses a rocker arm lubrication pressure measuring device and a working method thereof. The device comprises an oil feeder, a pressure sensor and a fixing assembly. The fixing assembly comprises a base and a clamp. The clamp is installed on the base and is crimped on the rocker arm. A hydraulic tappet is arranged on the base and abuts against one side of an oil injection port of the rocker arm. A fixing column is further arranged on the side of the base away from the oil injection port and abuts against the lower side of the rocker arm. An oil pipe is arranged in the hydraulic tappet. The oil pipe communicates the oil injection port and the oil feeder. The pressure sensor is arranged in the oil pipe and can detect the oil pressure in the oil pipe. The device solves the problem that the rocker arm needs to be installed in the engine for lubrication pressure detection, resulting in complicated disassembly and assembly steps and low detection efficiency.

This utility model discloses a positioning fixture for assembling a hydraulic rocker arm in an engine, relating to the field of monolithic hydraulic rocker arms. The positioning fixture includes a support frame with multiple claws on both sides. The process involves placing the rocker arm assembly fixture onto the cylinder head, inserting a hydraulic tappet into the tappet hole in the cylinder head, then inserting the monolithic rocker arm along the claw slots until it precisely contacts the valve tip. The intake and exhaust camshafts are then assembled and fixed, ensuring the intake and exhaust camshafts press firmly against the monolithic rocker arm without wobbling. The monolithic rocker arm is correctly seated. Finally, the rocker arm assembly fixture is removed. At this point, the pad surface of the monolithic rocker arm and the valve maintain a precise centerline fit, preventing misalignment or dislodgement. This avoids situations where visual inspection reveals poor stability and prolonged operating time.

The invention discloses an engine valve timing measuring device and method based on pure machinery, and belongs to the technical field of internal combustion engine detection. The method is used for solving many problems in the engine valve timing measurement technology. The measuring rod tool is arranged in a spark plug hole of a cylinder cover, the measuring rod is installed on the measuring rod tool, the upper end and the lower end of the measuring rod make contact with the dial indicator and a piston top respectively to form a piston-measuring rod-dial indicator sensing chain mechanism, the dial is installed on the rear flange face of a crankshaft, and the turning transfer disc is installed on the dial. The method comprises the following steps: 1, constructing an initial measurement state; 2, measuring a top dead center; 3, a dial and a turning transfer disc are installed; and 4, measuring the opening and closing moments of the air valve. The non-linear influence of a hydraulic tappet is avoided through the rigid tappet, the top dead center is accurately positioned by means of a'piston-measuring rod-dial indicator 'sensing chain, the double-reference synchronization relation between the crankshaft angle and the valve displacement is constructed, accurate measurement of the valve opening / closing phase is achieved, and the measurement reliability and universality are improved.

The invention discloses a hydraulic tappet leak-down time testing device and method, and belongs to the field of diesel engine design. The hydraulic tappet leak-down time testing device comprises an actuator for outputting force to compress a hydraulic tappet; the control unit is used for obtaining pressure, temperature and displacement signals in the testing process, controlling an actuator to complete required actions, comparing and analyzing a testing result and a target value, judging whether a product is qualified or not, and outputting a pressure value, a leakage and sinking time value and a temperature value to an upper computer at the same time; and the upper computer records and displays the data uploaded by the control unit and is used for man-machine interaction to send an instruction to the control unit. According to the invention, the accurate test of the leakage and sinking time of the hydraulic tappet is completed, the test cost is saved, the test period is shortened, and advanced verification before whole engine examination is realized.

The utility model discloses a device for conveniently replacing a hydraulic tappet of an engine, relates to the technical field of dismounting devices, and aims to solve the technical problem that the dismounting efficiency of the hydraulic tappet is low. The device comprises a fixing piece and a jacking mechanism. The fixing piece is used for being connected with an engine cylinder cover. The jacking mechanism comprises a body and a jacking part, the body is connected with the fixing part, an adjusting hole is formed in the body, part of the jacking part penetrates through the adjusting hole, and one end of the jacking part extends out of the adjusting hole and can abut against the valve spring base; the length of the part, located between the body and the valve spring base, of the jacking piece is adjustable so that the gap between the valve spring base and the cam shaft can be adjusted.

The invention belongs to the technical field of medical auxiliary tools, particularly relates to a buffering and damping assembly, an anti-falling seat for an osteoporosis patient and a use method of the anti-falling seat, and aims to solve the problem that an existing active anti-falling seat generates rigid impact at the moment of triggering support and easily causes secondary injury to the osteoporosis patient. According to the seat, efficient buffering and damping are achieved through the buffering and damping assembly, the seat comprises an arc-shaped hydraulic cylinder, an arc-shaped rod body, a hydraulic tappet and a reset spring, and impact energy is converted into heat energy to be dissipated; the seat is further provided with a supporting structure, a protection structure and a driving structure, and an anti-falling protection mechanism is formed. The millimeter wave detection radar monitors gravity center shift of a patient in real time, the anti-roll bar is driven to unfold and support, and the L-shaped handrail synchronously moves upwards for protection; the seat further has intelligent monitoring and alarming functions, and an audible and visual alarm gives an alarm when the patient turns over on one side; the design of the sliding plate body and the blocking rod provides additional protection to prevent the patient from leaning forward and falling down; according to the seat, the safety and the comfort degree of the osteoporosis patient are improved.

The utility model relates to the technical field of punchers, and discloses a puncher for a hydraulic tappet, which comprises a base, a support column, a workbench and a clamping vice, the upper end of the support column is fixedly connected with a support table, the upper side of the support table is provided with a telescopic motor, the output end of the telescopic motor is fixedly connected with a telescopic rod, and the telescopic rod is fixedly connected with the workbench. The other end of the telescopic rod is fixedly connected with a fixing sleeve, and the inner wall of the fixing sleeve is fixedly connected with a connecting rod. A base, a supporting column, a workbench, a supporting table, a telescopic motor, a telescopic rod, a fixing sleeve, a connecting rod, a punching device and the like are arranged and used in cooperation. When drilling operation is carried out, a supporting rod in the punching device can be rotated to change the positions of a hole drilling drill bit and a punching drill bit below the rotating table, the hole drilling drill bit can be firstly used for drilling a hole, then the supporting rod is rotated to enable the punching drill bit to be located above a workpiece, then the punching operation can be carried out, and the drill bits do not need to be frequently disassembled and replaced; and therefore, the working efficiency is improved, and drilling operation is facilitated.

This utility model relates to the technical field of automotive ball joint fatigue testing devices, specifically a comprehensive fatigue testing device for automotive ball joints, comprising: a base plate with a frame and a base fixed to its top; a hydraulic tappet mechanism fixed to the surface of the frame; a sealing cover and an air conditioner movably mounted on the top of the base plate; a clamp provided on the top of the base plate; and a rod hole opened on the surface of the sealing cover, into which the hydraulic rod of the hydraulic tappet mechanism is movably inserted. The beneficial effect is that the interior of the sealing cover is sealed, and then the air conditioner is activated for cooling or heating, thereby regulating the temperature inside the sealing cover. Once the desired temperature is reached, the hydraulic rod of the hydraulic tappet mechanism can continue to extend, applying radial loading to the automotive ball joint under test, thus completing the test. By repeatedly adjusting the temperature inside the sealing cover and conducting multiple tests on the automotive ball joint, the fatigue strength of the automotive ball joint under various temperature conditions can be measured.

The utility model provides a double-top type roller hydraulic tappet, which relates to the technical field of hydraulic tappets and comprises a first hydraulic tappet and a second hydraulic tappet, the second hydraulic tappet is positioned on the left side surface of the first hydraulic tappet, a fixing mechanism is clamped on the periphery of the first hydraulic tappet, a distance adjusting mechanism is clamped on the periphery of the second hydraulic tappet, and the distance adjusting mechanism is positioned on the left side surface of the first hydraulic tappet. A mounting plate is fixedly connected to the bottom of the fixing mechanism and the bottom of the distance adjusting mechanism, lifting assemblies are fixedly connected to the two sides of the mounting plate, connecting assemblies are fixedly connected to the opposite side faces of the lifting assemblies, and the fixing mechanism comprises first arc-shaped clamping plates symmetrically installed on the periphery of the first hydraulic tappet; first electric push rods are fixedly connected to the opposite side faces of the first arc-shaped clamping plates, first fixing bases are fixedly connected to the peripheries of the fixing ends of the first electric push rods, and adjustment is completed. Through the design, the position of the roller hydraulic tappet can be effectively and flexibly adjusted according to the position between valves, and great convenience is achieved.

The valve actuation system comprises a first rocker assembly operably connected to a first valve actuation motion source and a first engine valve, with a first lost-motion component arranged in series between a first input rocker and a first output rocker. A second rocker assembly is operably connected to a second valve actuation motion source and a second engine valve, with a second lost-motion component arranged in series between a second input rocker and a second output rocker. A one-way coupling mechanism is configured to transmit the second valve actuation motion to the first output rocker, but to prevent the first valve actuation motion from being transmitted to the second output rocker. Furthermore, a primary hydraulic lash adjuster is configured within the second rocker assembly to act on the first output rocker via the one-way coupling mechanism.

Air-intake-side and air-discharge-side first hydraulic lash adjusters (36, 37) are provided to a cylinder head (1) in an internal combustion engine. An oil original-pressure passage (45) is positioned at a width-direction central section of the cylinder head (1), the oil original-pressure passage (45) communicating with an oil reservoir part (46). A cam carrier internal passage (52) that passes through the interior of a cam carrier (2) is provided to the air-intake-side lash adjuster (36). Oil is supplied from the oil reservoir part (46) to a lash-adjuster mounting hole (38) via the cam carrier internal passage (52) and an air-intake-side oil passage (53).

An exhaust valve rocker arm assembly selectively operable in an engine braking mode includes a rocker arm and a valve end configured to selectively act on a valve bridge to engage a first and a second exhaust valve. The valve end includes a brake capsule to selectively extend in a first position to act on the first exhaust valve through the valve bridge. The valve end also includes a lost motion mechanism capable of selectively transmitting motion of the rocker arm to the valve bridge. The lost motion mechanism may integrate a hydraulic lash adjuster in particular embodiments.