61 results about "Hydraulic seal" patented technology

The invention relates to the technical field of underground water recharging, and particularly discloses a deep foundation pit underground water pumping and recharging balanced vacuum pressure type recharging device which comprises a basic hardware system, a sealing isolation system, a dynamic regulation and control system and a monitoring feedback system. The sealing isolation system comprises a vacuum well lid; according to the pipeline sealing assembly, a hydraulic drive sealing ring is arranged at the joint of a dewatering well water outlet pipe and a recharge well water inlet pipe, the sealing ring automatically expands to fill gaps during water injection, and air permeation is thoroughly isolated; through triple air isolation formed by water pumping pipe head immersion, vacuum well lid sealing and hydraulic sealing rings, contact between underground water and air is reduced to the maximum extent, oxidation reaction is reduced from the source, and the precipitation amount of iron and manganese oxides is reduced by 60% or above; meanwhile, bubbles and sediments can be effectively removed, more than 90% of bubbles and sediments can be actively removed through a periodic back raising and silt pumping mechanism, the anti-blocking performance of the recharge well is remarkably improved, and therefore the service life of the recharge well is prolonged.

The invention relates to a disc spring driven miniature high-pressure plug-in overflow valve which comprises a valve body, a disc spring seat, a valve core, a valve seat, a hydraulic sealing nut, a pressure regulating screw rod, an ED sealing ring, a steel ball, a disc spring, a sealing ring and a valve body connection control block body, and the pressure regulating screw rod is mounted in the valve body; the lower end of the pressure adjusting screw is connected with a disc spring seat through a steel ball, and the upper end of the pressure adjusting screw is connected with a hydraulic sealing nut through threads. The valve element is matched and connected with the valve seat. The overflow valve adopts a belleville spring driving plug-in mounting type structure, has a highly integrated design, effectively reduces the size and weight, drives the valve core to slightly and axially move through the belleville spring, realizes self-adaptive adjustment of system pressure, and ensures balance of internal pressure of a hydraulic system; a high-performance sealing piece is installed at the valve seat end, and effective isolation of high-pressure and low-pressure hydraulic systems is achieved.

The utility model discloses a high-temperature C-shaped rotary valve for a coking device, relates to the field of C-shaped rotary valves, and aims to solve the problem that the use of the C-shaped rotary valve is affected due to the fact that a sealing ring in the C-shaped rotary valve is easy to slightly deform at high temperature because the temperature of liquid is extremely high during coking operation in the prior art. A valve rod is rotatably connected to the upper end of the C-shaped rotary valve body, a C-shaped valve element is rotatably connected to the interior of the C-shaped rotary valve body, a hydraulic closed valve body is connected to one side of the C-shaped rotary valve body, a liquid inlet is formed in the hydraulic closed valve body, a hydraulic closed part is arranged on the hydraulic closed valve body, and a liquid outlet is formed in the hydraulic closed part. The hydraulic sealing device comprises a hydraulic sealing part, a connecting ring is fixedly connected to one side of the hydraulic sealing part, four hydraulic cavities are formed in the hydraulic sealing part in an annular array mode, a sealing ring seat is arranged on one sides of the four hydraulic cavities, four fixing rods are fixedly connected to one side of the sealing ring seat in an annular array mode, and an annular sealing ring is fixedly connected to one side of the sealing ring seat.

The invention relates to the technical field of sealing element detection, and discloses a hydraulic sealing element fatigue life test bed which comprises a test box. The hydraulic cylinder is driven by external force to be rotationally arranged in the test box; the movable plug is arranged in the hydraulic cylinder in a sliding mode, and a hydraulic sealing piece is detachably arranged on the outer side of the movable plug; one end of the push rod is fixedly arranged at the top of the movable plug, and the other end penetrates through the top of the hydraulic cylinder; the reciprocating assembly is arranged on the outer side of the hydraulic cylinder and used for driving the push rod to push the movable plug to slide in a reciprocating mode, the hydraulic cylinder comprises a cylinder sleeve and a sealing cover detachably arranged at the bottom of the cylinder sleeve, and the movable plug is arranged in the cylinder sleeve in a sliding mode; the reciprocating assembly drives the push rod to push the moving plug out of the cylinder sleeve after the hydraulic cylinder is turned over. The fatigue life test bed for the hydraulic sealing element can effectively solve the problem that the hydraulic sealing element is inconvenient to mount and dismount before and after a test in the prior art.

The utility model discloses a hydraulic sealing plug, including sealing cap and plug, the sealing cap one end is with the sealing end cap of sealing, the other end is open, the inside cavity is cylindrical, and the outside is polygon, the plug is located the inside cavity of sealing cap, and is fixed in sealing end cap inboard middle part, and the plug includes the straight plug of upper portion and the reducing plug of lower portion, the reducing plug outer wall is surrounded and is provided with the screw thread, the straight plug and the reducing plug junction are equipped with the sealing ring, the sealing ring is equipped with between the sealing ring of sealing end cap below and the plug of sealing cap inner wall, simple structure, convenient to use, have good sealing performance, and have longer life.

A magnetic coupling assembly incorporating a sleeve having longitudinal and oppositely longitudinal ends; a first hydraulic seal fixedly attached to the sleeve, and being positioned at the sleeve's longitudinal end; a second hydraulic seal fixedly attached to the sleeve, and being positioned at the sleeve's oppositely longitudinal end; a plurality of magnets fixedly attached to the sleeve and positioned between the first and second hydraulic seals; the sleeve including longitudinal and an oppositely longitudinal segments; and incorporating first and second wiper rings, fixedly attached to the sleeve, the first wiper ring being positioned longitudinally from the first hydraulic seal, and the second wiper ring being positioned oppositely longitudinally from the second hydraulic seal; the sleeve forming a lubricant reservoir which is outwardly closed by the sleeve, the lubricant reservoir being longitudinally closed by the first hydraulic seal and oppositely longitudinally closed by the second hydraulic seal.

The present invention is applicable to the technical field of deep dehydration of sludge, and provides an ultra-rigid ultra-high pressure elastic press filter frame with oil recovery function, the ultra-rigid ultra-high pressure elastic press filter frame with oil recovery function comprises: a filter plate, ears and shoulders are installed on both sides of the filter plate, a single-acting small hydraulic cylinder is installed between the filter plates, and a push plate and a pressure plate are installed on the filter plates at both ends of the single-acting small hydraulic cylinder respectively; a cloth hanging pin is installed on the push plate and the pressure plate, an exhaust valve is provided on the side of the push plate, a hollow bolt is installed on the pressure plate, a recovery oil pipe is connected to the hollow bolt, and an oil inlet pipe joint is provided on the hollow bolt; a connecting plate is installed on the push plate; a T-shaped sealing strip is arranged on the pressure plate. Reduce the equipment maintenance cost; improve the stability of the entire equipment, and improve the durability of use; improve the equipment use efficiency; and improve the life of the hydraulic sealing ring of the small hydraulic cylinder.

The utility model discloses a hydraulic sealing joint which comprises a main body, a joint pipe installed on the main body, an input pipe installed on the left side of the joint pipe, a fixing nut installed on the input pipe, a limiting ring installed on the input pipe, a first sealing ring installed on the right side of the limiting ring, and a second sealing ring installed on the right side of the first sealing ring. A third sealing ring is installed on the right side of the second sealing ring. According to the hydraulic sealing connector, the connection mode of the conical connector is adopted, and connection can be more stable through the connection mode. The three sealing rings are arranged on the connector, the perfect sealing effect can be achieved through the three sealing rings, and the service life of the connector can be prolonged. The limiting ring is arranged on the input pipe, it can be ensured that the fixing nut cannot be disengaged from the input pipe due to the existence of the limiting ring, a certain pulling force can be provided during connection operation, and therefore connection is tighter.

The utility model relates to the technical field of water conservancy construction, and in particular to a consolidation grouting device for a water diversion tunnel. The utility model provides a consolidation grouting device for a water diversion tunnel that can fix and support a grouting gun barrel during the grouting process, which is relatively labor-saving. A consolidation grouting device for a water diversion tunnel includes a grouting gun barrel, a hand-held sleeve, a control valve, a hydraulic sealing bag and a supporting mechanism. The outer side of the lower part of the grouting gun barrel is connected to a hand-held sleeve, and the lower part of the grouting gun barrel is connected to a control valve, and the outer side of the middle part of the grouting gun barrel is connected to a hydraulic sealing bag, and the outer side of the middle part of the grouting gun barrel is connected to a hydraulic sealing bag, and the control valve is located between the hydraulic sealing bag and the hand-held sleeve, and a supporting mechanism is provided below the grouting gun barrel. The utility model expands the hydraulic sealing bag and engages with the reserved hole, and then moves the stabilizing seat to the bottom of the grouting gun barrel, so that the fixed block is engaged with the grouting gun barrel, and the grouting gun barrel can be fixed and supported during the grouting process, which is relatively labor-saving.

The invention discloses a high-pressure high-speed hydraulic sealing test device, and belongs to the technical field of hydraulic sealing test. The test platform comprises a driving motor, a diaphragm coupling, a hydraulic sealing test section, a sealing water inlet pipeline, a pressure water inlet pipeline, a sealing water return pipeline and the like, a closed water circulation loop is formed, and the stable regulation and control of the sealing performance can be realized. The platform design has the characteristics of high power (up to 110 kW), high pressure (up to 1.5 MPa) and high rotating speed (up to 3500 rev / min). The platform adopts an integrated design concept, the assembly precision and stability of the device are improved, the pressure boundary condition is monitored and adjusted in real time through the cooperation of the pressure sensor, the pressure supply pump and the electric control valve, and the flowing stability of each pipeline in the test process is ensured.

The invention relates to the technical field of hydraulic elements, in particular to an assembling and positioning device for a high-precision hydraulic element. The invention discloses a precise assembling and positioning device for a high-precision hydraulic element. The precise assembling and positioning device comprises a barrel body and a cylinder body which are connected; the cylinder body comprises a cylinder body and cylinder body preassembly positioning sensor which is embedded in the bottom of the cylinder body and corresponds to the cylinder body and cylinder body preassembly center position, a one-way pressure release valve fixed to one side of the bottom of the cylinder body, and a hydraulic sealing detection sensor embedded in the side wall of the cylinder body. On one hand, the hydraulic element assembling control module accurately controls preassembling and assembling of the barrel and the cylinder body, accurate assembling of hydraulic elements by workers is facilitated, and reusability of the hydraulic elements is guaranteed; and on the other hand, the barrel body and the cylinder body in the hydraulic element are accurately matched, so that the problems of repeated assembly, assembly errors and influence on the assembly precision are avoided, and the product performance and quality of the hydraulic element are greatly improved.

An optimized metallic thermal spray coating able to achieve a suitable surface finish such that it slides against a hydraulic seal without damaging the surface of the hydraulic seal or causing hydraulic fluid to leak between the two sliding surfaces. The optimized metallic thermal spray coating can achieve a surface finish which has a combination of roughness characteristics consisting of an arithmetical mean roughness, a maximum profile peak height, a mean roughness depth designated, skewness, and a roughness relative material ratio, each of which is within well-defined upper limits and / or ranges.

The utility model relates to the technical field of sealing tests, in particular to a hydraulic sealing test device which comprises a device body, an installation cavity is arranged in the device body, an oil supply pipeline is arranged in the installation cavity, one end of the oil supply pipeline is connected with an oil supply connecting port on the side face of the device body, and an installation frame is vertically arranged in the installation cavity. An energy accumulator is installed on the installation frame and communicates with the oil supply pipeline through a first connecting pipe, and a first valve used for controlling the first connecting pipe to be connected and disconnected is arranged on the first connecting pipe. The problems that in the prior art, an oil supply pipeline of a hydraulic sealing test device is not provided with a protection device, and the oil supply pipeline or hydraulic equipment is prone to being damaged when oil pressure in the oil supply pipeline is suddenly increased are solved.

According to the invention, a dual fuel injector for injecting two separate fuels into a combustion chamber of an internal combustion engine is provided. A dual fuel injector includes a nozzle body housing a first fuel needle and a second fuel needle. The dual fuel injector also includes a first fuel control chamber defined at least in part by an upper end of the first fuel needle such that varying a first pressure in the first fuel control chamber varies a force on the upper end of the first fuel needle. Further, the dual fuel injector includes a second fuel control chamber defined at least in part by an upper end of the second fuel needle such that varying a second pressure in the second fuel control chamber varies a force on the upper end of the second fuel needle. The dual fuel injector includes a first fuel control valve defining a first switching volume fluidly coupled to a first fuel control chamber for actuating a first fuel needle valve; and a second fuel control valve defining a second switching volume fluidly coupled to the second fuel control chamber for actuating the second fuel needle valve. The dual fuel injector also includes an annular hydraulically sealed passage extending around an outer surface of the first fuel needle. The annular hydraulic seal passage is fluidly coupled to a high pressure fluid source. In addition, an annular hydraulic seal passage is fluidly coupled to at least one of the first switching volume and / or the second switching volume such that the respective switching volume is fluidly coupled to a high pressure fluid source via the seal passage.

The invention discloses a hydraulic sealing machine for gas spring production, and relates to the technical field of hydraulic sealing. A clamping mechanism is arranged in a vertically formed through hole, and a stamping mechanism is arranged above the through hole, so that a gas spring pre-assembly can be vertically fixed in the through hole by the device; the distance between air cylinder ports of different specifications and lengths and the pressing head is kept constant, precise and stable stamping and sealing operation is conducted on the air spring from top to bottom, the position height of the pressing head does not need to be adjusted frequently, the stability of hydraulic sealing is guaranteed, the production efficiency is improved, and meanwhile the production efficiency is improved. The swing arm capable of swinging is rotationally mounted below the first roller, and by means of meshing reversing of the first gear and the second gear, after the cylinder body is subjected to stamping force from the upper portion, secondary clamping can be conducted on the cylinder body from the side face in a self-adaptive mode, and the stability of the device in the gas spring hydraulic sealing process is guaranteed to a certain degree.

A programmable, electronically controlled sprinkler system (10) has hermetically sealed internal chambers (102) which enclose all of the internal water flow, valves (200), mechanical and rotational components (300) and a plurality of magnetic coupling arrangements (204,304) which allow external motors (202,302) to control operation of the internal mechanical components without requiring any hydraulic seals.

The invention provides a microscopic leakage observation device for a hydraulic seal. The microscopic leakage observation device comprises a shell (1), a base (2), a plug (3), an oil nozzle (4), an oil path (5), a sealing element (6), an oil path (9), a transparent sheet (10) and an optical amplifier, a sealing groove is formed in the bottom of the shell (1), the sealing piece (6) is located in the sealing groove in the bottom of the shell (1), and the depth of the sealing groove is smaller than the thickness of the sealing piece (6). The transparent sheet (10) is arranged in the base (2), is positioned right below the sealing groove in the bottom of the shell (1) and completely covers the sealing groove in the bottom of the shell (1); a through hole is formed in the bottom of the base (2) and serves as a microscopic leakage observation hole of a contact area of the sealing piece (6) and the transparent piece (10), and the area of the through hole is smaller than that of the transparent piece (10) and larger than that of a sealing groove in the bottom of the shell (1). And the optical amplifier is used for amplifying and displaying the microstructure of the contact area of the sealing element (6) in the microscopic leakage observation hole and the transparent sheet (10). The device can be used for directly observing a small gap at the edge of a sealing contact area, so that trace leakage of a sealing structure can be detected, and the method can be used as a rapid judgment method for sealing leakage.

The invention relates to a mechanical sealing element performance test bench, and belongs to the technical field of hydraulic sealing. The test bench comprises a mechanical seal test device, a main shaft, a bearing device, a coupling, a motor, a guide rail device, a test bench desktop, a bearing seat base, a motor seat and a motor seat base. The mechanical seal test device is installed in the middle of the test table top, the guide rail device is installed on the test table top, the bearing seat base and the motor seat base are respectively installed on the guide rail device, the bearing device is fixedly installed on the bearing seat base, one end of the coupler is connected and installed on the motor, and one end of the main shaft is connected with the other end of the coupler. The other end of the main shaft is arranged in the mechanical seal test device; according to the invention, the performance of two different mechanical sealing elements can be tested and compared, and the measurement precision is high; the test bench is simple in structure, is modularized in design, can simplify the dismounting steps, facilitates the measurement and maintenance, is high in test efficiency, is low in cost, and provides a good experiment basis for the sealing design and optimization of a mechanical sealing part.

The utility model discloses a hydraulic charging bucket sealing device for a submerged arc furnace, which comprises a charging bucket, a cover plate is rotatably mounted on the charging bucket, an n-shaped lifting lug is welded on the surface of the cover plate, the n-shaped lifting lug is connected with a connector, the connector is rotatably connected with a lifter, and the lifter controls the connector to move up and down to be connected with the n-shaped lifting lug. The lifter is rotationally connected with a hoisting mechanism, and the hoisting mechanism is used for hanging the lifter; after the hook head is connected with the n-shaped lifting lug in a hanging mode, the air cylinder controls the hook head to move upwards so that the cover plate can be opened, the cover plate can be actively opened and closed by controlling movement of the air cylinder and the connecting component, hooking and unhooking operation can be smoothly completed, and semi-automatic production can be achieved. A safe distance is reserved between the charging bucket cover plate and the charging bucket screen, it can be guaranteed that sufficient positions exist when the charging bucket is overfilled with discharging under the clamping and blocking conditions in the discharging process, lowering and sealing of the cover plate are not affected, and the fault rate of the discharging cover plate and smoke overflow are effectively reduced.

This invention discloses a non-contact hydraulic sealing device based on the hydrodynamic effect of spiral grooves, aiming to solve the problem of dry friction damage between the spiral groove surface and the smooth surface of the stationary ring during the start-up and shutdown phases of pump equipment. The device includes a rotating ring, a stationary ring, a secondary ring, and a locking mechanism. During initial startup, the secondary ring rotates under the viscous shear force of the rotating ring, effectively transferring mechanical friction to a preset wear-resistant surface, protecting the core spiral groove from high temperature and wear. When the rotational speed reaches a preset threshold, the locking mechanism is hydraulically or electromagnetically driven, braking through a piston and locking block, causing the secondary ring to transition from a rotating state to a stationary locked state. At this time, a momentary speed jump occurs between the rotating ring and the secondary ring, guiding the spiral groove to quickly establish a high-rigidity liquid film, achieving stable and reliable non-contact operation. This invention, by introducing a secondary ring and coordinating with locking and braking control, achieves friction transfer, protects the core working surface, and achieves a protective effect on the core hydraulic sealing structure.

This invention belongs to the field of shock absorber technology and relates to a large-size wellbore axial shock absorber, including an upper connector, a housing, and a lower connector. The housing is fitted onto the outer wall of the upper connector, and a receiving cavity is formed between the inner wall of the housing and the outer wall of the upper connector. A disc spring shock absorber assembly is installed in the receiving cavity. A hydraulic shock absorber assembly is connected to the bottom of the housing, and the lower connector is connected to the bottom of the hydraulic shock absorber assembly. The hydraulic shock absorber assembly includes a hydraulic shell, a piston, and a hydraulic sealing seat. The hydraulic shell is fitted onto the bottom of the housing, and the hydraulic sealing seat communicates with the bottom of the hydraulic shell and forms a hydraulic cavity inside. The piston slides through the hydraulic sealing seat and is slidably disposed in the hydraulic cavity. The piston has a hydraulic through hole, and an electromagnetic proportional valve is connected to the hydraulic through hole. This invention improves the problem of existing technology's single shock absorber element and fixed parameters, which are difficult to adapt to the vibration characteristics of large-size wellbores, by combining disc spring and hydraulic shock absorption, adaptive stiffness of shape memory alloy adjustment plate, and active adjustment by electromagnetic proportional valve.

The utility model discloses a hydraulic rubber jacking assembly of an automobile shock absorber, which relates to the technical field of automobile parts and comprises a shell, and an upper hydraulic sealing main spring component, a lower hydraulic sealing main spring component and a runner component are arranged in the shell. The shell, the upper hydraulic sealing main spring assembly and the lower hydraulic sealing main spring assembly form a closed inner cavity. The flow channel assembly is arranged in the inner cavity and divides the inner cavity into an upper liquid chamber and a lower liquid chamber, the flow channel assembly is provided with a flow channel used for communicating the upper liquid chamber with the lower liquid chamber, and the upper liquid chamber, the lower liquid chamber and the flow channel are filled with damping liquid; the upper hydraulic sealing main spring assembly comprises an inner framework and a first middle ring; the first middle ring is concentrically arranged on the outer side of the inner framework and is in vulcanization connection with the inner framework through the first rubber body; the lower hydraulic sealing main spring assembly comprises a center pipe and a second middle ring, the upper end of the center pipe is inserted into a center hole of the inner framework, and the second middle ring is concentrically arranged on the outer side of the lower end of the center pipe and is in vulcanization connection with the center pipe through a second rubber body.

The utility model discloses a low-leakage hydraulic valve group sealing assembly, and relates to the technical field of hydraulic sealing. The device comprises a hydraulic valve bank, a connecting mechanism and a plurality of configuration mechanisms are arranged on the hydraulic valve bank, and the connecting mechanism comprises a connector fixedly connected to the right side of the hydraulic valve bank. Through the arrangement of the connecting mechanism, if a sealing ring needs to be replaced, a first manual rotating disc on the outer wall of a first screw rod can be rotated outwards to move outwards, so that limiting on a T-shaped block on the first screw rod is relieved, at the moment, the T-shaped block drives a rotating block and a limiting rod on the rotating block to move outwards under the pushing of a first spring on the outer wall of a sliding rod, and the sealing ring is replaced. When the rotating block moves to a proper position, the rotating block can be rotated towards the two sides, so that the limiting rod on the rotating block can release limiting of the connecting pipe and the connector, the connecting pipe and the connector are further separated, the sealing ring is convenient to replace, through the design, tedious steps in the traditional mounting and dismounting process can be simplified, and the mounting efficiency is effectively improved.

The application discloses a kind of self-adapting air pressure balance sliding door control systems, it is related to sliding door control technical field.The sensor layer, PID control module, execution layer and prediction maintenance module are included;Sensor layer gathers pressure difference, sealed pressure, vibration, door position, temperature and humidity and other data, PID control module uses the improved algorithm with nonlinear correction and output amplitude limiting, the pressure difference is stabilized at 2Pa target value, simultaneously through closed loop PID, hydraulic sealed pressure is stabilized at 1.0MPa, and anti-integral saturation and output amplitude limiting are configured to ensure operation safety;Execution layer includes servo motor drive sliding door, hydraulic sealing system, emergency pressure relief valve and audible and visual alarm device;Prediction maintenance module is based on random forest regression model, according to the characteristics such as sealed pressure drop rate, valve response time, motor current variance, vibration level, operation frequency, remaining service life is predicted, and maintenance suggestion is output according to critical, early warning, normal classification.

The invention discloses an axial plunger hydraulic sealing working cavity device, and relates to the technical field of plunger hydraulic pumps, in the axial plunger hydraulic sealing working cavity device, spherical hinge plungers with the same number are hinged to the two end faces of a main shaft rotating disc assembly respectively, each spherical hinge plunger comprises a conical cylinder, a spherical hinge and a spherical table, and the spherical hinges and the spherical tables are arranged at the two ends of the conical cylinder; a sleeve seat is arranged on each of two sides of the main shaft turntable assembly, an inclined angle beta is formed between each sleeve seat and the main shaft turntable assembly, sleeves with the same number are fixedly mounted on the two sleeve seats, and spherical hinge plungers on the main shaft turntable assembly are sleeved with the sleeves on the sleeve seats on the corresponding sides in a one-to-one correspondence manner to form a sealed working cavity; the sleeve comprises a sleeving part sleeving the table and a connecting part for fixing the sleeve on the sleeve seat; the main shaft penetrates through the main shaft rotating disc assembly and the two sleeve bases and is connected with the sleeve bases. According to the axial plunger hydraulic sealing working cavity device, the technical problems that large hydraulic impact is generated during rotation reversing, and the plunger is clamped are solved.

The invention discloses a brake caliper maintenance method which comprises the following steps: S1, placing a brake caliper to be maintained in an operation area, disassembling and decomposing the brake caliper by using a tool assembly, and shooting the disassembling and decomposing process of the brake caliper through an image acquisition module; s2, the decomposed brake caliper parts are put into an ultrasonic cleaning machine to be cleaned; s3, the cleaned brake caliper parts are transferred into a drying device to be dried; s4, the dried brake calipers are assembled in an operation area, the assembling process is shot through an image acquisition module, and the assembled brake calipers are installed on a hydraulic sealing detection tool; s5, a corresponding brake caliper type is selected through a software interface of the control system, and sealing performance test parameters are set; s6, starting the hydraulic sealing detection tool, carrying out a pressurization test on the brake caliper, and shooting the test process through an image acquisition module; s7, the control system collects and displays test data in real time, and automatically generates a test result report after the test is completed; and S8, judging whether the sealing performance of the brake calipers is qualified or not according to the test result report.

The utility model provides a hydraulic sealing element detection device comprising a main machine body, and one side of the main machine body is provided with a PLC controller. Through cooperative use of the motor, the belt pulley, the first threaded rod, the second threaded rod, the water storage frame and the fixing block, when an induction device in the device loses efficacy or an electric power system is unstable, a workpiece is fixed in advance, then the workpiece is externally connected with a connecting pipe through a gas guide port for gas transmission, the workpiece is filled with gas, and then the workpiece is fixed through the connecting pipe. The motor is started to drive the two linkage mechanisms to operate, so that the water storage frame ascends until the workpiece body is completely covered with water, whether bubbles are generated in the water layer around the workpiece body or not can be observed through naked eyes, if yes, the sealing performance is poor, and otherwise, the sealing performance is complete; the device provides another detection mode of manual observation, so that when the sensing device fails, the detection work can still be performed, and the practicability of the device is improved.

The application discloses a hydraulic sealing machine for gas spring production and relates to the technical field of hydraulic sealing.The clamping mechanism is arranged in a vertically formed through hole, and the stamping mechanism is arranged above the through hole, so that the device can vertically fix the gas spring pre-assembly in the through hole, the distance between the cylinder port and the pressure head of different specifications and lengths is kept constant, the accurate and stable stamping and sealing operation of the gas spring is performed from top to bottom, the position and height of the pressure head do not need to be frequently adjusted, the stability of the hydraulic sealing is guaranteed, the production efficiency is improved, meanwhile, the swingable swing arm is rotatably arranged below the first roller, the first gear and the second gear are meshed and reversed, so that the cylinder can be secondarily clamped from the side surface after being subjected to the stamping force from the top, and the stability of the device in the process of the hydraulic sealing of the gas spring is guaranteed to a certain extent.

The utility model relates to the technical field of hydraulic module sealing assemblies, and discloses a hydraulic sealing aluminum end cover of a DCT hydraulic control module, which comprises a plastic end cover, a valve body and a clamp spring, a first array groove is formed in the side surface of the plastic end cover, a second array groove is formed in the side surface of the plastic end cover, and the clamp spring is arranged in the first array groove. An outer side circular groove is formed in the center of the side face of the plastic end cover, and an annular groove is formed in the outer surface of the plastic end cover. According to the utility model, the plastic end cover is made of plastic, so that the cost can be reduced, the competitiveness of a product can be improved, and meanwhile, the plastic end cover is provided with a plurality of grooves, so that a skeleton structure is formed on the plastic end cover, the structural strength, the product function and the durability of the plastic end cover are guaranteed, the material use is further reduced, and the cost is further reduced; and the direction and the size of the modified plastic end cover are not changed, mass production assembly is not affected, investment change of an assembly production line is not needed, and high practicability is achieved.

The invention discloses a universal hydraulic sealing element reliability test platform, system and method, and the test platform comprises a hydraulic pump station which is connected with a hydraulic machine through a hydraulic pipeline, and the hydraulic pump station is provided with a first pressure adjustment unit, a first flow adjustment unit and a temperature adjustment unit. And the display and control console is respectively connected with the hydraulic pump station, the hydraulic machine and the hydraulic pipeline through cables, and the display and control console is provided with a stroke control unit, a temperature control unit, a pressure control unit and a speed control unit. And a displacement sensor is arranged on a piston rod of the hydraulic machine. And the hydraulic pipeline is connected with the hydraulic pump station and the hydraulic machine, and a second pressure adjusting unit and a second flow adjusting unit are arranged on the hydraulic pipeline. According to the invention, the reliability test problem of hydraulic sealing elements with series sizes under multiple factors such as oil medium, movement speed, environment temperature, oil pressure and large stroke is solved, and the reliability of the hydraulic sealing elements under different factor conditions can be effectively tested.