136 results about "Head cooling" patented technology

The invention relates to a drive device (100) for a motor vehicle (105), comprising a machine housing section (300) for accommodating an electric machine (115) and a transmission housing section (305) for accommodating a transmission (130), wherein the machine housing section (300) has a first intake point (310) configured to be fluidically connected to a first intake line (225) of a first pump (200) of a hydraulic system (135) for cooling and / or lubricating thermal consumers, wherein the transmission housing section (305) has a second intake point (400) configured to be fluidically connected to a second intake line (230) of the first pump (200) or a further pump of the hydraulic system (135), wherein a winding head cooling system (320) of the electric machine (115) is fluidically connected to a transmission chamber (335) of the transmission housing section (305),wherein a coolant and / or lubricant contained in the transmission chamber (335) can be sucked off at least indirectly to the first intake point (310) and via the second intake point (400) via at least one bypass (350) in the engine housing section (300). Furthermore, the invention relates to a motor vehicle (105) with such a drive device (100).

The invention relates to an air pressure forming die and method for hot-state metal pipe parts. The air pressure forming die comprises an upper die system, a lower die system, a sealing inflation system and a pressure head cooling system. The mold is opened and closed through longitudinal displacement of the upper mold system on the lower mold system, and an air pressure forming space is formed. And the pressure head cooling system provides rapid heat dissipation for the end part of the pipe blank, so that fixing and pressing are ensured. The sealed inflation system achieves high-pressure segmented pressurization inflation through a jacking type butt joint disc and a sealed punch. Lateral deviation is prevented through the upper die guide plate and the lower die guide plate in the whole forming process, and finally efficient and accurate forming of the part is completed through self-cooling. Through innovative design and fine control, the forming quality is improved, the mold stability is enhanced, the production efficiency is improved, and the cooling effect is optimized.

Provided are a liquid cooling system of a charging gun and a charging gun. The liquid cooling system includes a head cooling assembly, a tail cooling assembly, a liquid input pipe and a liquid output pipe. The head cooling assembly includes a cooling pipe assembly. The cooling pipe assembly is connected to a charging terminal of the charging gun. The tail cooling assembly includes a connection box and a first conductive member. One end of the first conductive member is disposed in the connection box. A cable connected to the charging terminal is connected to the first conductive member in the connection box. Another end of the first conductive member is connected to an external power supply. The liquid input pipe extends through the connection box and communicates with the inlet of the cooling pipe assembly. The liquid output pipe communicates with the outlet of the cooling pipe assembly.

The invention discloses a stirring friction deposition stirring head cooling structure. The stirring friction deposition stirring head cooling structure comprises a solid heat transfer medium and a cooling assembly. The solid heat transfer medium is a flowing solid heat transfer medium or a non-flowing solid heat transfer medium; when the solid heat transfer medium is a flowing solid heat transfer medium, the flowing solid heat transfer medium flows through the peripheral surface of the stirring head to absorb heat of the stirring head; when the solid heat transfer medium is a non-flowing solid heat transfer medium, the stirring head is detachably and rotatably sleeved and fixed in the non-flowing solid heat transfer medium, so that the non-flowing solid heat transfer medium absorbs heat of the stirring head; the cooling assembly is used for cooling the solid heat transfer medium to take away heat absorbed by the solid heat transfer medium from the stirring head. The stirring head is free of liquid leakage and long in service life, the structural strength of the stirring head cannot be reduced, and the stirring head is suitable for a hollow stirring friction deposition stirring head and a stirring head for non-hollow friction stirring welding.

The invention discloses a milling head cooling system, which belongs to the technical field of milling head cooling and comprises a shell, a driving shaft and a driven shaft are arranged in the shell, the driven shaft is perpendicular to the driving shaft, a first spiral bevel gear is arranged at one end of the driving shaft, the driven shaft is provided with a second spiral bevel gear meshed with the first spiral bevel gear, and an oil tank is arranged at the bottom of the shell. The bottom of the shell communicates with the oil tank. The oil tank is provided with a driving mechanism used for driving oil to circulate, an oil inlet of the driving mechanism is connected with an oil outlet of the oil tank through a hose, and an oil outlet of the driving mechanism is connected with a reversing valve through a hose. A support is further arranged in the shell and connected with the shell through a bolt, the support is arranged outside the driving shaft in a sleeving mode, a gap exists between the support and the driving shaft, the support is provided with an annular groove, a first water jacket is arranged in the annular groove, and the first water jacket is connected with the reversing valve through a hose. And a cooling nozzle is arranged outside the shell. The problem of heat dissipation of the milling head is solved.

The utility model discloses a polishing and cleaning device for metal fitting processing, which belongs to the technical field of metal fitting processing and comprises a bottom plate, a first mounting plate is assembled on one side of the upper end face of the bottom plate, a group of limiting components is assembled on one side of the first mounting plate, and a group of cleaning components is further assembled on one side of the first mounting plate. The polishing and cleaning device for metal fitting machining has the advantages that clamping and limiting are fast, the polishing and cleaning device is suitable for fittings of different sizes, cleaning and cooling are achieved, and the overall machining efficiency is improved; according to the device, a first reciprocating motor and a second reciprocating motor are controlled to drive a spraying head to move within the stroke range of a threaded lead screw, so that the spraying head cools and cleans the tubular fitting in the polishing process, and the working efficiency is improved. Therefore, the machining quality of the workpiece is improved.

The invention provides a hypersonic velocity leading edge combined cooling structure, system and method capable of coping with space-time non-uniform heat flow, and is mainly used for solving the problems that in the existing active thermal protection technology, head cooling insufficiency and downstream cooling excess are likely to occur in space, the cooling effect is difficult to dynamically adjust in time, cooling insufficiency or excess in some time periods is caused, and the cooling effect is poor. And the whole porous medium structure is inconvenient to check and maintain. The invention discloses a hypersonic velocity leading edge combined cooling structure capable of coping with space-time non-uniform heat flow. The hypersonic velocity leading edge combined cooling structure comprises a diverging part, a structure part, a rear cover plate and a shunting core, through discrete arrangement of the diverging parts and setting of different porosities for the diverging parts at different positions, the porosities of the N diverging parts are sequentially reduced from the head part to the tail part, and the larger the porosities are, the more the coolant distribution amount is, so that the technical problems of insufficient head cooling and excessive downstream cooling easily occurring in space are solved.

The utility model relates to a device for cooling, dedusting and waste heat utilization of a kiln head of a rotary kiln. The device comprises a kiln head cooling structure, a deduster, a dedusting fan, a chimney, a combustion fan and a regulating valve, the kiln head cooling structure, the dust remover, the dust removal fan and the chimney are sequentially connected through a pipeline; an outlet of the combustion fan is connected with the combustor through a pipeline, an inlet of the combustion fan is connected with the three-way pipe, one connector of the three-way pipe is connected with the adjusting valve and then communicated with the atmosphere, and the other connector of the three-way pipe is connected with an outlet of the dust removal fan. The method has the advantages that stable operation of the rotary kiln system under special conditions of failure, kiln drying, low yield and the like is guaranteed. Dust collection air is used for cooling a kiln head metal structure, one dust removal fan is used, kiln head cooling fans (generally two centrifugal fans) and corresponding pipelines are saved, the occupied area is saved, and the one-time investment and maintenance cost of equipment are reduced.

The utility model discloses a high-frequency quenching device for high-strength bolt production, which comprises a frame and a cooling tank positioned at the front end of the frame, a high-frequency quenching mechanism is arranged on the frame, and a reciprocating lifting mechanism is arranged in the cooling tank. The high-frequency quenching mechanism comprises a driving motor, a group of rotating shafts, two groups of chain gears, a group of transmission chains, a plurality of groups of bearing plates, a mounting plate, a high-frequency quenching machine and an electromagnetic heating coil. The continuous quenching device has the beneficial effects that a group of transmission chains drive a plurality of groups of bearing plates to rotate and are matched with a high-frequency quenching machine to drive an electromagnetic heating coil to carry out continuous quenching treatment on the head of the high-strength bolt, so that the quenching efficiency is improved; the quenched high-strength bolt falls into the bearing screen frame, the reciprocating lifting mechanism drives the bearing screen frame to do reciprocating lifting motion in the cooling tank, the head of the high-strength bolt is rapidly cooled, cooling of the head of the high-strength bolt is more uniform, after cooling is completed, the bearing screen frame is lifted to the top, and the high-strength bolt is conveniently taken out.

In order to provide an electric motor designed for operation with winding head cooling, which is optimized with respect to the frictional power loss caused by a cooling fluid entering the air gap between the rotor and the stator, an electric motor is proposed, comprising a rotor and a stator (10), the stator (10) comprising coil windings (12) made of electrical conductors, the coil windings (12) each form a winding head (14a, 14b) at an axial end (13) of the stator (10), the winding head (14a, 14b) comprising at least one first radially innermost layer of conductor sections (16a, 16b), the conductor sections (16a, 16b) of the first layer, in particular all, of each winding head (14a, 14b) having at least one bend in the same circumferential direction, and the first layer, in particular all of the conductor sections (16a, 16b) of each winding head (14a, 14b) having at least one second radially innermost layer of the conductor sections (16a, 16b). The conductor sections (16a, 16b) of the first layer are arranged such that the conductor sections (16a, 16b) have an inclined course with respect to the circumferential direction of the stator (10), the electric motor has a predetermined direction of rotation (R) for driving a shaft connected to the rotor, and wherein the direction of bending of the conductor sections (16a, 16b) of the first layer at the two axial ends (13) of the stator (10) coincides with the direction of rotation (R) of the electric motor.

The invention relates to the technical field of numerical control machine tool cooling, and discloses a cooling device for a numerical control machine tool and a cooling method thereof.The cooling device comprises a machine tool table, two sliding rails are fixedly connected to the top face of the machine tool table, a machine tool assembly is installed above the sliding rails, and a storage plate is arranged between the two sliding rails; a cooling box is fixedly connected into the machine tool table, and an input pipe and an output pipe are fixedly connected to the two sides of the top face of the cooling box correspondingly. A machine body cooling mechanism is arranged on the bottom face of the machine tool assembly, a tool bit cooling mechanism is arranged on the front side of the machine tool assembly, and a lubricating mechanism is arranged on the rear side of the machine tool assembly. According to the invention, the fault of hot melting and fusing of an internal circuit of the motor set caused by the fact that heat generated by long-time work of the motor set cannot be dissipated in time can be avoided, the pressure of heat generated by long-time work of the motor set is relieved, and the fault rate is reduced.

The invention relates to the technical field of charging guns, and particularly discloses a charging gun cooling system and a charging gun. In the charging gun cooling system, in a head cooling assembly, a cooling cavity is provided with a liquid inlet and a liquid outlet, a supporting frame accommodates the connecting end of a first terminal and the connecting end of a second terminal, and the cooling cavity is located between the first terminal and the second terminal; the liquid input pipe is communicated with the liquid inlet; the liquid output pipe is communicated with the liquid outlet; the liquid input pipe is connected with a first cable, the liquid output pipe is connected with a second cable, the first cable is connected with the connecting end of the first terminal, the second cable is connected with the connecting end of the second terminal, and the first cable and the second cable are connected with the first conductive part in the two connecting boxes respectively; the liquid input pipe and the liquid output pipe penetrate through the two connecting boxes respectively. According to the above arrangement, the temperature of the joint of the first cable and the first terminal connecting end, the temperature of the joint of the second cable and the second terminal connecting end and the temperature of the first conductive part can be reduced, and the charging efficiency is improved.

The invention discloses a spray cooling device for plastic molding, which comprises a spray pipe, a sliding pipe arranged on the inner wall of the spray pipe, a spray mechanism used for cooling and shaping a plastic product, and a cleaning mechanism used for brushing the inner wall of the spray pipe, and the protection mechanism is used for changing the spraying angle of the spraying mechanism, and the inner wall of the spraying pipe is in sliding connection with the side wall of the sliding pipe. The invention relates to the technical field of cooling spray heads. When a spraying head cools a plastic product and needs to be adjusted, through cooperation of a spraying pipe, a sliding pipe, the spraying head, an electric telescopic rotating rod, a fixing ring, a gear ring, a first gear, a micro motor, a rotating rod, a second gear, a belt and a protection plate, the liquid spraying angle of the spraying head can be adjusted, and meanwhile the side wall of the spraying head can be protected; garbage and dust are prevented from being directly attached to the surface of the spray header to cause blockage of the spray header and influence the cooling efficiency of equipment.

The utility model belongs to the technical field of UPS power supplies, and particularly relates to a UPS power supply convenient for heat dissipation, which comprises a UPS power supply body and a wiring panel, the wiring panel is arranged on the surface of the head part of the UPS power supply body, a head part air inlet channel is arranged at the joint of the head part of the UPS power supply body and the wiring panel, a tail part air inlet channel is arranged at the tail part of the UPS power supply body, and the head part air inlet channel is communicated with the wiring panel. A head cooling fan is installed at the position, corresponding to the head air inlet channel, of one end of the upper surface of the UPS body, and a tail cooling fan is installed at the position, corresponding to the tail air inlet channel, of the other end of the upper surface of the UPS body. The inner cavity of the UPS body is divided into a plurality of groups of battery pack mounting cavities through the flame-retardant partition plates, battery packs can be separated, the distance between the battery packs is increased, heat dissipation of the battery packs is facilitated, air is blown from bottom to top in the battery packs through the vent holes, the tail part can transversely blow air to the battery packs, and the heat dissipation efficiency of the battery packs is improved. The heat dissipation efficiency of the battery pack can be improved.

A personal cooling system for cooling a person includes a head cooling cap. The head cooling cap includes an inner layer defining a cavity configured to receive a head of the person, an outer layer, an intermediate layer positioned between the inner layer and the outer layer, and an inlet coupled to the outer layer. The inner layer is formed from fluid permeable materials. The intermediate layer defines a plurality of openings extending therethrough. The inner layer and the intermediate layer cooperatively define an inner potential space positioned between the inner layer and the intermediate layer. The intermediate layer and the outer layer cooperatively define an outer potential space positioned between the intermediate layer and the outer layer. The outer potential space is configured to receive a fluid and provide the fluid to inner potential space through the plurality of openings.

The invention relates to the technical field of welding, in particular to welding equipment for mold production and machining. A cylinder I is fixedly connected to the welding head; a funnel is fixedly connected to the shell and communicates with the first cylinder through a hose. A cavity I is formed between the cylinder I and the welding head; the shell is fixedly connected with a mixer; the input end of the mixer is communicated with the cavity I through a hose; a second cylinder is fixedly connected to the outer side of the welding head and fixedly connected with the shell, and the second cylinder is fixedly connected with the first cylinder. A first spiral piece is fixedly connected to the inner side of the second cylinder and fixedly connected with the welding head. The mixer is arranged beside the welding head, gypsum is directly smeared after welding, station transferring is not needed, and efficiency is improved; high-temperature clear water obtained after welding head cooling and preheated gypsum powder are prepared into high-temperature gypsum slurry in a mixer, the high-temperature gypsum slurry is smeared to the repair welding position, uniform cooling is achieved, and the cracking risk is reduced; the design solves the problems of welding head heat dissipation and gypsum preheating at the same time, and the practical value is high.

The material of this product is synthetic resin and liquid latent heat material. The product is filled with liquid latent heat material (phase change material) and after cooling in a refrigerator, it is placed inside a hat or helmet and worn on the head to reduce body heat.

The utility model discloses alignment cutting equipment for copper profile production, which comprises a cutting table, the upper surface of the cutting table is fixedly connected with two fixing plates, a cutting frame is rotatably connected between the two fixing plates through a rotating shaft, the upper surface of the cutting frame is fixedly connected with a cooling cover, and the cooling cover is fixedly connected with the cutting table. A cooling cover is arranged on the upper surface of the cutting frame, a cooling nozzle is fixedly mounted on the inner wall of the cooling cover, a cutting blade is arranged in the cutting frame, two mounting openings are formed in the upper surface of the cutting table, a refrigerator is mounted in each mounting opening, and a water storage tank is arranged behind the cutting table. According to the device, two refrigerators are arranged on the cutting table, the cold faces of the refrigerators make contact with a copper profile during cutting, the copper profile is rapidly cooled by means of the good conduction effect of the copper profile, meanwhile, a cooling spray head is arranged in a cooling cover, a water pump on a water storage tank is matched with the cooling spray head, the cooling spray head cools a cutting blade, and the cutting efficiency is improved. And high-temperature deformation of the cutting position of the copper profile can be prevented.

The utility model relates to a transmission roller shaft head cooling mechanism for a toughening furnace, which comprises a passage arranged in a framework of a lower furnace body, a fan connected with an inlet of the passage and an air hole arranged at the upper part of the framework of the lower furnace body and communicated with the passage, and the position of the air hole corresponds to the position of a supporting roller shaft head and faces the supporting roller shaft head; the number of the passages is two, the passages are respectively arranged in the frameworks on the two sides of the lower furnace body corresponding to the supporting roller shaft head, the number of the fans is at least two, and one passage is provided with at least one fan. The fan, the passages in the framework and the air holes form a cooling channel, air generated by rotation of the fan is sprayed out of the air holes through the passages in the framework, and the positions of the air holes correspond to the positions of the shaft heads of the supporting rollers, so that airflow sprayed out of the air holes is blown to the positions of the shaft heads, the shaft heads can be cooled, high-temperature deformation of the shaft heads is avoided, and the service life of the supporting rollers is prolonged. And meanwhile, the airflow can blow away heat flow emitted from the top and bottom of the furnace body, and heat accumulation at the head of the supporting roller shaft is reduced.

The invention discloses a pediatric clinical cooling device, and relates to the technical field of pediatrics, the pediatric clinical cooling device comprises a bed board platform, four corners of the lower end of the bed board platform are provided with support legs, the upper surface of the front end of the bed board platform is provided with a headrest, and the upper surface of the headrest is provided with a rubber cushion pad. The head cooling mechanism is arranged on the front side of the bed board platform, and a body position cooling mechanism is arranged on the rear side of the bed board platform; the head cooling mechanism comprises a first adjusting rod, and a top box is arranged on the outer side of the first adjusting rod; the body position cooling mechanism comprises a cooling box. The problems that a cooling device and a pillow are combined and matched for use, only the neck of a patient can be cooled, the forehead of the patient often needs to be cooled under the conventional high-temperature condition, meanwhile, in a pediatric patient, high temperature is gradually transmitted, the whole body is infected, and the body part of the patient needs to be cooled at the moment are solved.

The utility model relates to the field of welding machines, in particular to an automatic cooling type ultrasonic welding machine. The welding machine comprises a machine base, an ultrasonic welding head and a welding head lifting air cylinder, a cylinder body of the welding head lifting air cylinder is fixed to the machine base, a piston rod of the welding head lifting air cylinder is connected to the ultrasonic welding head, a product front end positioning mechanism is installed on the machine base, a first air pipe and a second air pipe are connected to the machine base, and the first air pipe and the second air pipe are both connected to an air receiving mechanism. An electronic proportional valve is installed on an air path of the welding head lifting air cylinder. A product to be welded is positioned through the product front end positioning mechanism. And the gas receiving mechanism is matched with the two gas pipes to cool the ultrasonic welding head or spray nitrogen to the product, so that the product is prevented from being oxidized.

A head cooling apparatus for cooling a user's head includes a cap which defines a cavity configured for receiving the user's head. The cap comprises a base member which defines a rim of the cap and extends toward a top end of the cap. The cap also comprises a containment member which is coupled to the base member and a heat transfer substance which is housed in an interior space in the containment member. A covering is removably mountable over the cap.

The ice cap for cooling the head comprises an ice cap body, the ice cap body comprises a forehead cooling area, a head top cooling area, an occipital area and a temperature display module, and the forehead cooling area, the head top cooling area and the occipital area are sequentially and flexibly connected and can deform to define a head containing area. The forehead cooling area comprises an outer layer and a hydrogel adhesion layer coated on the inner surface of the outer layer, the head top cooling area is provided with a plurality of head top ice bag areas, head top ice bags are arranged in the head top ice bag areas in a matched mode, and the temperature display module is arranged in the forehead cooling area. The temperature of the forehead cooling area is monitored and displayed through a temperature display module. The ice cap is simple in structure and convenient to use, the temperature of the cap body can be conveniently mastered in time while the ice cap is attached to the head of a patient, and the cooling efficiency of the patient is improved.

A cap (100) with a head cooling device is provided with a head cooling device (1) and a cap (2), the head cooling device (1) is provided with a device main body (11) and a fan (12), and the device main body (11) is provided with: an air suction part (1122) which is an opening for sucking air into the fan (12); and an air delivery unit (113) for delivering the air sucked in from the air suction unit (1122) by the fan (12) into the cap (2). The device body (11) is provided with an upper surface part (111) constituting the upper surface and a lower surface part (112) constituting the lower surface, the air suction part (1122) is formed on the lower surface part (112), and the air delivery part (113) is formed between one end of the upper surface part (111) and one end of the lower surface part (112).

The utility model discloses a machine head cooling device of an injection molding machine in the technical field of injection molding machines, which comprises an operation table, a material injection box arranged above the operation table, a machine head body fixedly connected with the lower end of the material injection box, a molding unit arranged on the right side of the machine head body, and a splicing mechanism and an air guide mechanism arranged on the outer side of the machine head body. A first mounting frame is fixedly mounted at the front end of the operating table, a first air rod body is fixedly mounted at the upper end of the first mounting frame, the machine head cooling device of the injection molding machine is additionally provided with a splicing mechanism and an air guide mechanism, the splicing mechanism adopts a rapid splicing structure, and a heating assembly and a machine head body are separated; the heating assembly and the machine head body are directly separated, heat is released outwards, accumulation of the heat in the machine head body is avoided, the heat dissipation area is also increased, the heat can be quickly guided out, the air guide mechanism adopts a mode of guiding air to the splicing mechanism, the heat on the heating assembly and the machine head body is quickly taken away, and then the low-energy-consumption cooling effect is achieved.

The utility model discloses a head cooling and extruding device of a sealant extruder, which comprises an extruding mechanism used for extruding a self-sealant, and a cooling mechanism connected with the extruding mechanism and used for cooling the self-sealant, according to the head cooling extrusion device of the sealant extruder, the cooling channel is arranged in the cooling cylinder, and circulating water cooling is realized through the cooling water inlet and the cooling water return port, so that a self-sealant can be rapidly cooled to a proper temperature in the extrusion process, and the problem of low cooling efficiency of a traditional natural cooling and air cooling mode is effectively solved; by optimizing the internal structure of the cooling cylinder, the cooling medium can be uniformly distributed in the cooling channel, the extruded self-sealing glue is uniformly heated in the whole cooling process, and the local supercooling or superheating phenomenon is avoided, so that the glue material performance change caused by nonuniform cooling is reduced, and the product quality is improved.

The utility model relates to the technical field of electronic jacquard machines, in particular to an electronic jacquard machine faucet cooling device which comprises a machine body, a driver and a faucet shell are arranged on the machine body, a cold air assembly is arranged on the faucet shell, and an exhaust pipe is fixedly connected to the cold air assembly. The exhaust pipe is provided with a cooling assembly used for enhancing the heat dissipation effect of the interior of the faucet shell and the heat dissipation effect of the driver. The cooling assembly comprises an upper pipeline and a lower pipeline which are arranged in the faucet shell. By means of the cooling assembly, when cold air is conveyed into the faucet shell and the exhaust plate is driven to move towards the left side, most of the cold air in the exhaust pipe is exhausted to the surface of the driver through the exhaust plate, the cold air can act on the driver more directly, the heat dissipation effect is better, the cooling rate is higher, and the service life of the faucet is prolonged. And in the process that the exhaust plate moves back and forth on the top of the driver, the faucet shell is in a sealed state, cold air stays in the faucet shell for a longer time, and the cold air can conduct heat exchange more effectively to achieve the cooling purpose.

The embodiment of the present disclosure discloses a combustion chamber flame tube and a flame tube manufacturing method suitable for a pure hydrogen gas turbine. A specific implementation of the combustion chamber flame tube includes: the flame tube body includes a head cooling section, a heat exchange rib segment and a tail cooling section, the head cooling section is provided with at least one head cooling groove, the tail cooling section is provided with at least one tail cooling groove, the outer side of the heat exchange rib segment is provided with at least one heat exchange rib, the head cooling section includes a connecting assembly, the connecting assembly is used to connect the head cooling section with the combustion chamber main nozzle; the flame tube guide bushing includes a bushing body and a fixing assembly, the bushing body and the fixing assembly are fixedly connected, and the fixing assembly is used to detachably connect the bushing body with the combustion chamber casing; the flame tube body is arranged inside the bushing body, and a preset annular cavity spacing is arranged between the flame tube body and the bushing body; at least one mixing hole is opened on the flame tube body. This implementation can reduce the emission of nitrogen oxides in the combustion chamber.

A cylinder head structure that can increase the rigidity of an area corresponding to an area between cylinder bores and improve a sealing force of an inter-bore corresponding portion positioned above between adjacent cylinders when enhancing the sealing force between a cylinder block and the cylinder head to improve engine output. The cylinder head structure includes: insertion walls through which right and left fastening bolts arranged between adjacent cylinders pass; a head upper wall connecting upper end portions of a pair of the insertion walls; and a cylinder head bottom wall, and a head cooling water channel is surrounded by those four walls (insertion walls, head upper wall, cylinder head bottom wall), and a vertical wall in a state of extending left and right spanning the head upper wall and the cylinder head bottom wall to block the head cooling water channel is formed between the pair of insertion walls.