33results about How to "Avoid mutual leakage" patented technology

The invention discloses a powerful and mechanical automatic-locking hydraulic cylinder, and belongs to the technical field of hydraulic cylinders. The two ends of a cylinder barrel are sealed by a cylinder cover and a cylinder bottom respectively. A guiding column of the cylinder cover is sleeved with a spring. The spring is sleeved with a brake block. The two ends of the spring abut against the cylinder cover and the brake block respectively. The outer circumferential face of the large diameter of the brake block is in sealing fit with the inner circumferential face of the cylinder cover. The end face of the end, with a large-diameter hole, of a locking block abuts against the end face of the step of an inner hole of the cylinder barrel, and the other end face of the locking block abuts against the end face, located at the portion of the cylinder barrel, of the cylinder cover. After a steel ball is put into a steel ball installation hole of a piston, the steel ball installation hole of the piston is matched with an inner hole of the cylinder barrel, and an annular groove of the piston corresponds to a rodless cavity oil port in the cylinder barrel. One end of a piston rod is fixed to a piston rod installation hole of the piston, and the other end of the piston rod penetrates through the cylinder bottom to be located outside the cylinder barrel. According to the powerful and mechanical automatic-locking hydraulic cylinder, the requirement for automatic locking after the piston rod is completely retracted can be met, and the locking state can be kept for a long time under the situation that pressure relief of a hydraulic system is completed or leakage happens until unlocking is actively achieved.

The invention relates to a method for increasing air tightness of a coke oven top and an oven top structure. The coke oven top is divided into two structures of an oven top upper portion and an oven top lower portion, wherein the oven top upper portion and the oven top lower portion are respectively built as independent whole bodies, and a sliding layer is arranged between the oven top upper portion and the oven top lower portion; when an oven is dried, after the over top upper portion and the oven top lower portion are respectively swelled, mortars are grouted via a grouting hole on the oven top upper portion to fill a top gap on the oven top upper portion and a gap between the oven top lower portion and a big protective plate so as to prevent mutual leakage between adjacent carbonization chambers and assure the leakproofness of the coke oven. The invention has the advantages that the situation that the oven top upper portion is swelled together with the oven top lower portion to cause damages due to non-uniform swelling at the oven top upper portion and the oven top lower portion of the coke oven can be effectively solved.

The invention relates to the field of thermal energy and power engineering, in particular to a heat-pipe heat exchanger and a heat exchange method. The heat-pipe heat exchanger comprises a heat pipe housing, at least one radiator, at least one heat collector, a heat insulating layer and an exhaust liquid-filling port, wherein the heat pipe housing comprises a single inner space, a heat transfer medium is filled into the lower portion of the inner space, each radiator is filled with a radiating medium, the radiators are positioned on the lower portion of the inner space and immersed in the heat transfer medium, each heat collector is filled with a heat collection medium, the heat collectors are positioned on the upper portion of the inner space and above the liquid level of the heat transfer medium, the heat insulating layer warps the outer wall of the heat pipe housing, the exhaust liquid-filling port is reserved at the top of the heat pipe housing or on the upper portion of the lateral wall of the heat pipe housing, the heat transfer medium is filled into the heat pipe housing through the exhaust liquid-filling port, and gas in the heat pipe housing is exhausted through the exhaust liquid-filling port. The heat-pipe heat exchanger is simple in structure, convenient in maintenance and better in heat exchange effect.

The invention relates to a novel crude oil normal-pressure tower top oil-gas heat exchanger. A cover plate part of a floating head of the heat exchanger is in a groove shape, the structure can increase the depth of an arc so that sufficient baffling space can be provided when media in a tube pass reverse on the floating head, and the tube pass media can circulate smoothly; sealing match of trapezoid grooves is adopted for a floating tube plate and a floating flange and hook-ring matched faces, so that the sealing effect between the floating head tube plate and the floating head flange and hook rings is improved, and the problems that the tube pass media and shell pass media leak or seep or mix mutually to increase complexity of the corrosion environment, lead to corrosion and leakage and cause pollution to the environment can be effectively avoided; due to the arrangement of an LX-03 anticorrosive coating structure, corrosion resistance and scouring resistance of the heat exchanger are greatly improved, service life of the heat exchanger is effectively prolonged, industrial usage cost of the heat exchanger is reduced, economic losses caused by maintenance and replacement are reduced substantially, production efficiency is improved, and environmental pollution caused by leakage of the heat exchanger is reduced further.

The invention relates to the technical field of PCR laboratories, in particular to a PCR laboratory with environmental barrier. The PCR laboratory with environmental barrier comprises a reagent preparation room, a sample preparation room, a proliferation room and a product analysis room arranged sequentially from left to right, wherein the wall body between the reagent preparation room and the sample preparation room is provided with a first transfer window; the wall body between the sample preparation room and the proliferation room is provided with a second transfer window; and the wall bodybetween the proliferation room and the product analysis room is provided with a third transfer window. The PCR laboratory with environmental barrier has the beneficial effects that the laboratory isan innovative achievement through many years of practice, research and summary; and the technology of the invention is mainly embodied in the following aspects: structural divisions are laid firstly in a scientific and reasonable technology; setting in a scientific and reasonable airflow pressure gradient direction is firstly carried out; a reasonable gate opening direction of each functional roomis firstly carried out; and a personnel flow and sample flow direction is firstly laid in a reasonable mode.

The embodiment of the invention relates to the technical field of a vanadium battery, and discloses a battery panel and the vanadium battery. The battery panel comprises a shell, wherein an installation hole is formed in the shell and is used for installing an electrode plate, the shell is provided with a first rubber sealing ring along a part near to an outer circle of the installation hole, and the first rubber sealing ring protrudes out of a surface of the shell. Compared with the prior art, the battery panel has the advantages that the length of the first rubber sealing ring selected by the battery panel is relatively short, thus, the fabrication coat of the first rubber sealing ring is reduced, and the fabrication cost of the vanadium battery is reduced; since the sealing range of the first rubber sealing ring is small, the area of an ion film matched with the first rubber sealing ring also can be correspondingly reduced, the area of the ion film is only enabled to be slightly larger than an encircling area of the first rubber sealing ring, and the first rubber sealing ring can be attached onto an edge of the ion film; and the ion film is very high in cost, thus, the area of the ion film is also reduced, and the manufacturing cost of the vanadium battery is reduced.

The invention relates to a connecting component, particularly to a pneumatic rotary joint. The pneumatic rotary joint comprises a rotary spindle, a joint body is coaxially connected at one end of the rotary spindle, a first vacuum gas chamber is arranged in the rotary spindle, a second vacuum gas chamber is arranged in the joint body and communicated with the first vacuum gas chamber, the rotary spindle is provided with a vacuum outlet communicated with the first vacuum gas chamber, the joint body is provided with a vacuum port communicated with the second vacuum gas chamber, an inflation spindle pipe is arranged at the axis position of the rotary spindle and the joint body, the first vacuum gas chamber and the second vacuum gas chamber evenly surround the inflation spindle pipe, and an inflation connection is fixedly arranged at one end far away from the rotary spindle on the joint body and communicated with the inflation spindle pipe. The pneumatic rotary joint has the advantages of being high in tightness, capable of guaranteeing an inflation path and a vacuum pumping path to be parallel and to surround the rotation axis evenly and the like.

The invention relates to a connecting component, particularly to a pneumatic rotary joint. The pneumatic rotary joint comprises a rotary spindle, a joint body is coaxially connected at one end of the rotary spindle, a first vacuum gas chamber is arranged in the rotary spindle, a second vacuum gas chamber is arranged in the joint body and communicated with the first vacuum gas chamber, the rotary spindle is provided with a vacuum outlet communicated with the first vacuum gas chamber, the joint body is provided with a vacuum port communicated with the second vacuum gas chamber, an inflation spindle pipe is arranged at the axis position of the rotary spindle and the joint body, the first vacuum gas chamber and the second vacuum gas chamber evenly surround the inflation spindle pipe, and an inflation connection is fixedly arranged at one end far away from the rotary spindle on the joint body and communicated with the inflation spindle pipe. The pneumatic rotary joint has the advantages of being high in tightness, capable of guaranteeing an inflation path and a vacuum pumping path to be parallel and to surround the rotation axis evenly and the like.

The invention discloses a waterstop structure of top rubber of an impermeable wall and a construction method thereof. The waterstop structure of top rubber of the impermeable wall is structured such that a rubber waterstop strip (2) is vertically arranged in a slot hole (3) of impervious concrete (4) and the rubber waterstop strip (2) stretches to upper structural concrete (1); and following filler is successively arranged in the slot hole (3) of the impervious concrete (4): lower micro-expanded mortar (7) in a lower layer, a water expandable waterstop strip (6) in a middle layer and upper micro-expanded mortar (5) in an upper layer. The waterstop structure can solve a waterstop problem between the lower impervious concrete (4) and follow-up pouring structure concrete (1) well, and can avoid inter-leakage between two sides of the impermeable wall, so that the permeable stability of foundations on two sides is guaranteed.

The invention discloses a floating piston sealing structure of an inflatable shock absorber. For the annular guide belt, a gas-liquid sealing ring is fixed on the middle circumference of the outer wall of the floating piston; The invention can not only improve the sensitivity and stability of the movement of the floating piston and the piston rod, but also has good wear resistance, prevents the mutual leakage of internal hydraulic oil and high-pressure gas, and improves the overall service life.

The invention relates to the technical field of vanadium batteries, in particular to a seal structure of a vanadium battery. The seal structure comprises a steel-structure clamp plate, a screw rod, a nut, a flow channel side plate and a spring. Compared with the prior art, the seal structure is characterized in that a built-in spring structure is designed, and the spring is arranged between the flow channel side plate and the steel-structure clamp plate; when the nut locks electric pile components, the spring cooperates to achieve compression, so that energy is stored in the spring, and the spring releases energy in assembled electric piles, and generates constant squeezing action on the electric piles, thereby increasing the sealability between the electric pile components, and avoiding leakage to each other. Furthermore, as the extrusion force is enough, the phenomenon that the middle electric pile component sinks when a plurality of electric pile components are assembled is also avoided, and thus the phenomenon of electric discharge due to mutual leakage of positive and negative liquid phases resulting from relative displacement of flow channel holes is avoided.

The invention discloses a method for intercepting and treating concrete when wall column concrete marks are different, and relates to the technical field of house building engineering construction. The method comprises the steps that intercepting concrete reinforcement frameworks forming 60-degree angles with the horizontal direction are inserted into concrete walls on the two sides of a structural column correspondingly, and a plurality of vertical reinforcing steel bars are inserted into the lower portions of the intercepting concrete reinforcement frameworks; the intercepting concrete reinforcement framework and the vertical reinforcing steel bars are located between the inner side wall vertical bars and the outer side wall vertical bars of the concrete wall. The lower ends of the interception concrete reinforcement framework and the vertical reinforcing steel bars are inserted into lower-layer steel bars or rafts and slightly fixed, lower-layer top plate or raft concrete is poured after acceptance check is completed, the side formworks are detached and concrete walls and structural column steel bars are bound after the concrete strength meets the requirement, and the vertical reinforcing steel bars are firmly bound; the interception concrete reinforcement framework is firmly bound after being wound and bound by a steel wire mesh; it can be ensured that the steel wire mesh is not extruded and broken, and mutual leakage of wall column concrete is avoided.

The invention relates to a novel regeneration recycle gas aftercooler. Baffle plates are in a D type, the radial-direction length of the incomplete part of each baffle plate is one fifth the inner diameter of a shell, and the distance between every two adjacent baffle plates is one second the inner diameter of the shell; sealing match of trapezoid grooves is adopted for a floating tube plate and a floating flange and hook-ring matched faces. Due to the arrangement of the baffle plates and the distances, while flow velocity of fluid media in a shell pass is improved, the suitable turbulence degree of the fluid in the shell pass is achieved, and the heat exchange effect is optimum; due to the trapezoid groove type sealing, it can be effectively avoided that tube pass media and shell pass media leak or seep or mix mutually to increase complexity of the corrosion environment, lead to corrosion and leakage and cause pollution to the environment; due to a coating structure on the surface of a tube pass and a clad layer on the surface of the shell pass, corrosion resistance and scouring resistance of the tube pass and the shell pass can be improved, and economic losses caused by maintenance and replacement are reduced.

The invention discloses an efficient sealing multi-head wire drawing machine. The efficient sealing multi-head wire drawing machine comprises a transmission case, a wire drawing wheel axle, a wire drawing wheel and a wire drawing cavity; the wire drawing wheel axle penetrates through the transmission case wall and is rotatably arranged on the transmission case in a supporting mode through a bearing, a sealing spacer bush is arranged between the bearing and the wire drawing wheel and fixedly connected with the wire drawing wheel axle in a sealing mode, a sealing base is arranged between the bearing and the wire drawing wheel, and the sealing base is fixedly connected with the transmission case in a sealing mode; an engine oil sealing ring and a wire drawing oil sealing ring are arranged between the outer circle of the sealing spacer bush and an inner hole of the sealing base, the engine oil sealing ring is adjacent to the bearing, and the wire drawing oil sealing ring is adjacent to thewire drawing wheel; and a wire drawing oil drainage channel is arranged between the wire drawing oil sealing ring and the wire drawing wheel and communicates with the wire drawing cavity, and a leakage detection channel is arranged between the wire drawing oil sealing ring and the engine oil sealing ring and communicates with a viewer. According to the efficient sealing multi-head wire drawing machine, not only can sealing between the transmission case and the wire drawing cavity be guaranteed, but also a failed sealing device can be found in time, and the production efficiency of the wire drawing machine is guaranteed.

The invention discloses a baby safe medicine feeding device for pediatric nursing, specifically relates to the technical field of pediatric nursing medical equipment, comprising an outer cylinder, an inner cylinder is arranged inside the outer cylinder, and a barrier is arranged inside the inner cylinder, so The barrier includes a column and a plurality of baffles, the plurality of baffles are evenly distributed on the circumferential side of the column, and are fixedly connected with the column, and the inner wall of the inner cylinder is provided with a plurality of first card slots correspondingly , the bottom surface of the inner cylinder is correspondingly provided with a plurality of second card slots, and an insertion hole is provided at the junction of one end of the plurality of second card slots. The present invention divides the inner cylinder into a plurality of material storage areas by using partitions, and puts the pre-configured medicinal liquid, warm boiled water and fluid food into the corresponding material storage areas respectively, so that one thing with multiple functions can be realized, and the operation is simple. The utility model has strong practicability, and at the same time, the efficiency of feeding medicine can be greatly improved by arousing children's interest in taking medicine by using the rubber toy capable of sounding.

The invention discloses an infant safe medicine feeding device for pediatric nursing, in particular to the technical field of pediatric nursing medical appliances, the device comprises an outer cylinder, an inner cylinder is arranged in the outer cylinder, a partition is arranged in the inner part of the inner cylinder, the partition comprise a upright post and a plurality of baffle plates, the plurality of baffle plates are uniformly distributed on the circumferential side of the upright post and are fixedly connected with the upright post; the inner wall of the circumferential side of the inner cylinder is correspondingly provided with a plurality of first clamping grooves; the bottom end surface of the inner cylinder is correspondingly provided with a plurality of second clamping grooves, the intersection part of one ends of the second clamping grooves is provided with an insertion hole. According to the invention, the inner cylinder is divided into a plurality of storage areas by the partition, and pre-prepared liquid medicine, warm boiled water and fluid food are respectively loaded into the corresponding storage areas, so that multiple purposes of one object can be achieved,the operation is simple, the practicability is strong, meanwhile, by utilizing a rubber toy capable of sounding to hook the medicine taking interest of children, the medicine feeding efficiency can begreatly improved.

The invention discloses a heat exchanger with a cold fluid and a hot fluid not leak through with each other. The shell side of a high-position cold fluid container (1) passes through the cold fluid. The shell side of a low-position hot fluid container (3) passes through the hot fluid. A hot fluid inlet (9) and a hot fluid outlet (10) are respectively installed at the top and the bottom of the hot fluid container (3). A cold fluid inlet (11) and a cold fluid outlet (12) are respectively installed at the top and the bottom of the cold fluid container (1). A condensation heat exchange tube (2) is arranged in the cold fluid container (1). An evaporation heat exchange tube (4) is arranged in the hot fluid container (3). The lower end of the condensation heat exchange tube (2) is connected with the lower end of the evaporation heat exchange tube (4) through a condensed liquid return tube (5) and the upper end of the condensation heat exchange tube (2) is connected wit the upper end of the evaporation heat exchange tube (4) through a steam ascending tube (6) to form an independent closed circulation loop. The cold fluid and the hot fluid respectively pass through two containers, the occurrence of mutual leakage between the cold fluid and the hot fluid is absolutely avoided and the operation safety of the equipment is ensured.

Provided is a novel oil gas condensation cooling device on the top of a fractional distillation tower. A floating head cover plate portion is in a shape of a groove. A baffle plate is D-shaped, the radial length of an incomplete portion is 25% of the inner diameter of a casing, and a gap between two adjacent baffle plates is 30% of the inner diameter of the casing. A floating head pipe plate is matched with a floating head flange and a hook ring matching face in a sealing mode through a trapezoid-shaped groove. The floating head cover plate of a groove-shaped structure can increase the arc depth, so that when a medium in a tube pass is reversed at the floating head position, enough baffling space is obtained, and the medium in the tube pass circulates smoothly. By arranging the baffle plate structure and gaps, flow speed of the fluid medium in a shell pass can be further increased, turbulent flow degree of fluid is improved, and a heat exchanging effect is improved. By means of the trapezoid-shaped groove, corrosion, leakage and environment pollution caused by the fact that the complexity of a corrosion environment is enhanced because of mutual leakage and mixing of the medium in the tube pass and the medium in the shell pass can be effectively avoided. In addition, by means of an LX-05 coating structure, corrosion resistance and scouring resistance can be improved, and economical loss caused by maintaining and repairing is reduced.

The invention relates to a cabin penetrating device, which comprises a cabin penetrating sleeve, a cabin penetrating pipe and at least one locking joint, wherein the cabin penetrating sleeve axially penetrates through a cabin wall and is hermetically fixed on the cabin wall, the cabin penetrating pipe axially penetrates through the cabin penetrating sleeve, the locking joint is provided with a through hole, the through hole is at least partially arranged on the cabin penetrating pipe in a sleeved manner, the locking joint is abutted against an axial end surface of the cabin penetrating sleeveso that the cabin penetrating pipe can be fixed into the cabin penetrating sleeve in a sealed mode, and a connecting structure is arranged on the locking joint and used for connecting the locking joint with an external mechanism in a sealed mode. According to the cabin penetrating device, a common stop valve or a ball valve can be used for replacing a special right-angle stop valve with a bottom flange, the application object of cabin penetrating of the side of a high-pressure cabin pipeline is expanded, and the usage cost is reduced. According to the device, sealing rings are arranged at different positions so that mutual leakage of media inside and outside the high-pressure cabin and media inside a pipeline is effectively avoided.

The present invention relates to the field of thermal energy and power engineering, in particular to a heat pipe heat exchanger and a heat exchange method. The heat pipe heat exchanger includes: a heat pipe shell, which includes a single inner space, and a heat transfer medium is filled in the lower part of the inner space ; At least one radiator, which is filled with a heat dissipation medium, the radiator is located in the lower part of the inner space, and is completely submerged by the heat transfer medium; at least one heat collector, which is filled with a heat collection medium, the The heat collector is located on the upper part of the inner space, and the heat collector is located above the liquid surface of the heat transfer medium; the insulation layer is wrapped on the outer wall of the heat pipe shell; the exhaust liquid filling port is arranged on the The top of the heat pipe housing or the upper part of the side wall injects the heat transfer medium into the heat pipe housing through the exhaust liquid filling port, and discharges the gas in the heat pipe housing. The heat pipe heat exchanger provided by the invention has a simple structure, is convenient for maintenance, and has better heat exchange effect.

The invention discloses a transmission box sealing structure of a wire drawing machine. The transmission box sealing structure comprises a transmission box, a wire drawing wheel shaft, a wire drawingwheel and a wire drawing cavity. The wire drawing wheel shaft penetrates the side wall of the transmission box and is rotationally supported on a transmission box body through a bearing. A sealing isolation sleeve is arranged between the bearing and the wire drawing wheel. The sealing isolation sleeve is fixedly connected with the wire drawing wheel shaft in a sealed manner. A sealing base is further arranged between the bearing and the wire drawing wheel. The sealing base and the transmission box are fixedly connected in a sealed manner. At least two machine oil sealing rings are arranged between the outer circle of the sealing isolation sleeve and an inner hole of the sealing base and are adjacent to the bearing. Machine oil discharging channels are arranged between every two adjacent engine oil sealing rings and between each machine oil sealing ring and the bearing and communicate with an inner cavity of the transmission box in a connected manner. A wire drawing oil sealing ring isfurther arranged between the outer circle of the sealing isolation sleeve and the inner hole of the sealing base, and the wire drawing oil sealing ring is adjacent to the wire drawing wheel. By meansof the transmission box sealing structure of the wire drawing machine, it can be guaranteed that lubricating oil in the transmission box can be subjected to effective sealing and isolating, and mutualseepage of the lubricating oil and wire drawing oil is prevented.

The invention discloses an OLED display panel, which comprises a TFT array substrate and a plurality of anodes arrayed on the TFT array substrate. A pixel definition layer is arranged on the TFT array substrate, and the pixel definition layer includes the exposed The opening of the anode and the spacer for separating two adjacent anodes, each of the openings corresponds to a sub-pixel area; wherein, the pixel definition layer is sequentially provided with first holes for transporting holes. A common layer, a second common layer for transporting electrons, and a cathode layer, a luminescent material is respectively arranged between the first common layer and the second common layer corresponding to each sub-pixel area; wherein, the interval A hole blocking portion is further provided above the portion, and the hole blocking portion separates the first common layer between two adjacent sub-pixel regions from each other. The invention also discloses a preparation method of the above-mentioned OLED display panel.

The invention discloses a method for embedding and fixing a horizontal grout stop belt, relating to a concrete construction method. The strength of the horizontal grout stop belt is increased by arranging reinforcing ribs and omega-shaped walings on the horizontal grout stop belt at intervals so that the horizontal grout stop belt can not deform, bend and displace in concrete pouring, the embedding quality of the grout stop belt is ensured, the difficulty of later joint grouting construction is reduced, the mutual leakage of grouting areas in later concrete grouting is reduced and the grouting quality of the grouting areas is ensured. The method for embedding and fixing the horizontal grout stop belt has the advantages of easy operation, low cost and high reliability.

The invention discloses a fuel cell electrode structure and a preparation method thereof. The electrode structure comprises an active zone and a frame zone arranged around the active zone, wherein the active zone comprises a proton exchange membrane, catalysis layers and porous diffusion layers; the catalysis layers are respectively positioned on two sides of the proton exchange membrane; two sides of the catalysis layers are respectively pressed with the porous diffusion layers; the frame zone comprises a zone where the proton exchange membrane extends out of the edges of the catalysis layers and a fiber-reinforced composite material is clamped on the two sides, extending out of the edges of the catalysis layers, of the proton exchange membrane; the frame zone is thinner than the active zone. The invention further provides the preparation method of the electrode structure. Through adoption of the electrode structure and the preparation method, not only can the cell sealing problem be solved, but also the cell sealing reliability can be improved and the additional weight can be reduced; the cell service life is prolonged, the operation is simple, and the production efficiency is high.

The invention provides a device and a method for safe compatibility of multiple power supply modules. The device comprises a plurality of power supply input interfaces used for different use scenes; the priority of the control output sequence of the power input interface is set according to different use scenes; each power input interface is connected with one automatic control unit; the automatic control units are controlled by output voltages of the respectively connected power supply input interfaces; the automatic control unit connected with the low-priority power supply input interface is connected with the output ends of all the power supply input interfaces with the priority higher than that of the low-priority power supply input interface; and when the plurality of power input interfaces are connected with an external power supply, the output voltage of the power input interface with the high priority turns off the automatic control unit connected with the power input interface with the low priority, and the power input interface with the highest priority in the plurality of power input interfaces connected with the external power supply turns on the automatic control unit connected with the power input interface. Therefore, the plurality of power input interfaces are connected with an external power supply without mutual interference.

The invention provides a quick-response pneumatic hydraulic cylinder which comprises an upper cover, a cylinder barrel and a lower cover, and the upper cover, the cylinder barrel and the lower cover are sequentially connected. The quick-response pneumatic hydraulic cylinder further comprises a first sealing assembly which comprises two first guiding rings, a plurality of second guiding rings, a step seal and an AQ seal. The two first guiding rings are arranged at the two ends of the outer wall of a piston correspondingly, the second guiding rings are arranged between the two first guiding rings, the AQ seal is arranged between the first guiding ring close to the upper cover and the corresponding second guiding ring, and the step seal is arranged between the first guiding ring away from the upper cover and the corresponding second guiding ring. According to the quick-response pneumatic hydraulic cylinder provided by the invention, movement flexibility and stability of the piston and a piston rod can be improved, abrasion resistance is good, mutual seepage of internal hydraulic oil and internal high-pressure gas is prevented, and the overall service life is prolonged.

The invention relates to a hydraulic braking anti-lock braking system of an all-terrain vehicle. The system comprises a hydraulic brake unit and an anti-lock unit, wherein the hydraulic brake unit comprises a front wheel brake valve, a rear wheel brake valve, two front wheel cylinders and two rear wheel cylinders, and the anti-lock unit comprises an eccentric motor, a front wheel oil return plunger pump, a rear wheel oil return plunger pump, a front wheel energy accumulator, a rear wheel energy accumulator, two front wheel normally-open electromagnetic valves, two front wheel normally-closed electromagnetic valves, two rear wheel normally-open electromagnetic valves, two rear wheel normally-closed electromagnetic valves, two front wheel speed sensors, two rear wheel speed sensors and a controller. The system is advantaged in that the anti-lock braking system is introduced into the all-terrain vehicle, a hydraulic braking system is fully combined, the maximum deceleration of the vehiclecan be kept, stability and the steering capacity of the vehicle during braking can be kept, and that the vehicle is more smooth during braking under emergency conditions in the high-speed driving process can be guaranteed, and the driving pleasure of a driver is greatly improved.