1063 results about "Assembly disassembly" patented technology

A collapsible and portable fire pit assembly is disclosed to create a configuration for operation of the fire pit at various locations. The disclosed fire pit assembly is portable allowing a user to construct the fire pit assembly in different environment terrains or locations. The fire pit assembly can also create multiple types of fire burning configurations including a smokeless configuration. The fire pit assembly may have a plurality of side panels that mate with one another for quick assembly / disassembly. A base may be used to hold and secure the plurality of side panels. A plurality of air flow openings may be present on parts of the plurality of side panels and the base to create a smokeless outdoor fire with minimal emissions. Further features, components, and accessories may be added to the fire pit assembly to enhance enjoyment and use.

Disclosed are a main unit module and an assistive device equipped with the main unit module, for example, a nursing machine and an overhanging machine. The main unit module comprises a shifting module, a supporting framework module and a coupling module; the supporting framework module is assembled above the shifting module, the coupling module is provided on the supporting framework module. The opening and closing operations of wheel leg sets in the shifting module can drive and control the movement of the main unit module. The supporting framework module is loaded with a nursing module having different functions, so that the main unit module has a plurality of different nursing functions. By means of the main unit module, one or a combination of a loading module, a jacking module, a supporting module and a large wheel module can be loaded on the nursing machine, and by means of the main unit module or the nursing machine, one or a combination of a suspension support module, a sling machine, a cross bar, and a hanging cloth can be loaded on the overhanging machine. Therefore, a user can achieve multiple purposes by means of the nursing machine or the overhanging machine, and different modules can be freely matched, thereby facilitating the assembly, disassembly, storage and transportation, and saving the cost.

The invention relates to the technical field of engineering formwork trolleys, in particular to an integral box culvert electric formwork moving trolley and a construction method of the integral box culvert electric formwork moving trolley. The internal mold system is arranged in the box culvert and used for supporting and protecting the box culvert from the interior of the box culvert; the outer mold system is arranged outside the box culvert; the box culvert is supported and protected from the outside of the box culvert. The inner mold system comprises an inner mold trolley support, an inner mold walking mechanism, an inner mold plate and an inner mold fixing mechanism, the inner mold walking mechanism is used for driving the inner mold trolley support to do translational motion in the box culvert, the inner mold trolley support is used for supporting the inner mold fixing mechanism and the inner mold plate, and the inner mold fixing mechanism is used for fixing the inner mold plate to the inner wall of the box culvert; the trolley is provided with a top side formwork supporting system, the erecting procedure and time of a formwork support in a box chamber in traditional cast-in-place construction are optimized, the trolley is driven by a walking motor, the on-site assembling and disassembling time is shortened, and the box culvert construction period is shortened by 20%.

Apparatuses, assemblies, and methods for facilitating assembly, disassembly, and / or service of a fluid end for a pump may include a fluid end handling system, including a lift adaptor and a support frame. The lift adaptor may include a lift connector configured to be connected to a lifting mechanism for lifting the lift adaptor and the fluid end, and a fluid end support positioned to support the fluid end and orient the fluid end relative to a pump frame for assembly and removal of the fluid end. The support frame may include a pump frame connector to connect the support frame to the pump frame, a ramp having a ramp face extending in a direction substantially parallel to a direction in which the fluid end is moved for connection to the pump frame, and an actuator connector associated with the ramp and positioned to connect the support frame to an actuator.

The invention discloses a splicable desktop panel for height-adjustable table, comprising desktop panel body, which is composed of first panel, second panel, third panel, and fourth panel; fixing pins and fixing pin holes are provided on the inner surfaces of said first panel, second panel, third panel, and fourth panel wherein fixing pins and fixing pin holes are correspondingly connected to each other, and the bottom surface of first panel, second panel, third panel, and fourth panel are connected via rectangular connecting piece and triangular connecting piece, respectively. The invention has advantages of easy to assembly and disassembly through convenient assembly and fixing of various panels for formation, and the bottom are fixed through connecting pieces with the screws, while desktop panel can also achieve desktop length changes through connecting 2, 3, 4, N panels, which has advantage of reducing transportation costs, and edges of packaging and convenient transportation.

The utility model relates to a multifunctional combined type gantry lifting system which comprises a combined type lifting tower and a climbing type hydraulic jacking device. The combined lifting tower is composed of four stand columns, two longitudinal lifting beams, a plurality of transverse lifting beams, a lifting appliance, a longitudinal supporting structure and a transverse supporting structure. The climbing type hydraulic jacking device is composed of a hydraulic cylinder, a lower telescopic locking mechanism and an upper telescopic locking mechanism. According to the utility model, the main body structure assembled in a modularized manner is matched with the climbing type hydraulic jacking device, so that the hoisting requirements of equipment with different specifications can be met; the overall structure of the system is compact, the required site space is small when large equipment is hoisted, assembly, disassembly and transportation are convenient, the turnover utilization rate of the equipment is greatly improved, and the construction cost is reduced; and by matching with a horizontal sliding mechanism, vertical lifting and horizontal transverse moving of large equipment can be achieved, use is convenient and flexible, and applicability is high.

The invention provides a pressure-controlled high-speed fluid precise trapping device, and belongs to the technical field of chemical engineering, the pressure-controlled high-speed fluid precise trapping device comprises a high-speed fluid trap, a precise pressure-controlled unit module, a multi-stage sampling connection assembly and a positioning bracket, and the device provided by the invention realizes multi-stage series linkage control through a connecting assembly; according to the device, continuous collection of high-speed fluid in the same event and process products in different stages can be achieved, meanwhile, trapping at any position and any angle can be achieved through the positioning support, a new experimental method and means are provided for revealing of high-speed fluid carrier changes and explosion process laws, and the device adopts modular design and is easy to popularize and use. All the connectors adopt the same standard, rapid connection is achieved through threads, pins and the like, assembling and disassembling are convenient, valves and pipelines are unified in standard, the universality of parts is good, and the device is convenient to clean in the later period and good in repeatability.

The utility model relates to a crystalline silicon photovoltaic assembly disassembly and separation production line, which comprises a transmission line body and a back plate disassembly assembly installed on the transmission line body, the back plate disassembly assembly comprises a back plate disassembly frame, and the upper surface of the back plate disassembly frame is slidably connected with a back plate disassembly installation frame. A back plate dismounting tool rest is slidably connected to one side of the back plate dismounting mounting frame, a back plate dismounting tool is fixedly connected to the bottom end of the back plate dismounting tool rest, a back plate dismounting air cylinder is fixedly connected to the back plate dismounting mounting frame, the output end of the back plate dismounting air cylinder is fixedly connected with the back plate dismounting tool rest, and an edge cutting part is fixedly connected to one side of the back plate dismounting frame. According to the crystalline silicon photovoltaic module disassembling and separating production line, the back plate is cut open through the back plate disassembling knife, the back plate disassembling pressing plate is matched with the back plate disassembling knife to clamp the back plate which is peeled off, so that the back plate can be completely peeled off, and compared with a crushing mode adopted in the prior art, the crystalline silicon photovoltaic module disassembling and separating production line can improve the recycling value of the photovoltaic plate; and no dust is generated.

The utility model relates to the technical field of unmanned aerial vehicle supporting facilities, in particular to an unmanned aerial vehicle hangar with the adjustable layer number and an operation system thereof, and the unmanned aerial vehicle hangar comprises an operation warehouse layer, a first guarantee warehouse layer and a power module. The operation library layer is provided with a containing cavity for containing the lifting platform, and the number of the operation library layer is at least one; the first guarantee library layer is detachably connected with the operation library layer, and the operation library layer and the first guarantee library layer are arranged in a laminated mode in the preset direction. According to the unmanned aerial vehicle hangar with the adjustable layer number, a detachable connection mode is adopted, the first guarantee warehouse layer and the operation warehouse layer can be flexibly assembled and disassembled, space is saved, and the unmanned aerial vehicle hangar is suitable for various deployment scenes. The first guarantee library layer manages electric power and operation states in a centralized manner, simplifies management, improves efficiency, and ensures safe charging. The construction and maintenance cost is reduced through the modular and detachable design, the first guarantee library layer is shared to serve the multiple operation library layers, the cost is further reduced, and the resource utilization rate is increased.

The invention relates to the technical field of spraying devices, and discloses a self-cleaning anti-blocking waste liquid spray gun which comprises a gun body, a spray head, a filter short pipe and a cleaning assembly, the filter short pipe is arranged at the rear end of the gun body, a first connecting rod is arranged in the gun body to be connected with the cleaning assembly, the cleaning assembly comprises a rotating shaft, a spiral blade and a cleaning brush, and the spiral blade is made of carbon fiber reinforced polymer. A brush head is arranged at the front end of the cleaning brush and movably connected with the rotating shaft, the nozzle is in threaded connection with the gun body, and a filter screen and a sealing washer are arranged in the filter short pipe and in threaded connection with the gun body and the waste liquid pipe. The motor drives the rotating shaft through the bevel gear, so that the cleaning brush rotates to clean the spray head connecting plate, the jet flow holes are prevented from being blocked, the filter short pipe can be washed after use, the spray head and the filter short pipe can be taken down after long-time use, and the motor is started to clean the interior after the gun body is sealed by adding cleaning liquid. The method is suitable for various waste liquid treatment scenes.

The utility model discloses an electric spinning assembly disassembly and assembly machine, comprising: a mobile forklift, a disassembly and assembly machine body carried by the mobile forklift, a turntable rotatably connected to the top of the disassembly and assembly machine body, a lifting mechanical arm rotatably connected to the turntable, a horizontal rotation mechanical arm rotatably connected to the outer end of the lifting mechanical arm, a component carrier disposed at the outer end of the horizontal rotation mechanical arm and used for carrying the spinning component, and a twisting drive mechanism disposed on the horizontal rotation mechanical arm and used for driving the spinning component on the component carrier to rotate. The electric spinning assembly disassembly and assembly machine of the utility model is used to replace the spinning component of the spinning device, can reduce the work intensity of workers replacing the spinning component, improve the work efficiency of replacing the spinning component, and has good practicality.

The invention pertains to an adaptive seating system optimized for efficient storage and transport. Comprising a series of interlocking modular portions, each unit includes a horizontal platform and multiple perpendicular seating posts. Removable seating structures attach to these posts, ensuring flexibility in configuration. Between consecutive seating posts, steps of varying heights create a successive rise in elevation, facilitating a stadium seating effect. To enhance portability, specific modular units incorporate casters, with select ones designed to tilt back 90 degrees for easy maneuverability. This system offers versatile seating arrangements adaptable to different audience sizes and venue constraints. When storage or reconfiguration is required, the modular design ensures ease of assembly, disassembly, and compact storage, catering especially to venues with limited space.

The utility model relates to the field of metering pump equipment, and discloses a metering pump with a quick release structure, which comprises a pump body, the outer wall of the pump body is fixedly connected with a fixed plate, the lower surface of the fixed plate is provided with a workbench, the inside of the fixed plate is fixedly connected with a fixed ring, the inside of the fixed ring is rotatably connected with a threaded ring, and the threaded ring is provided with a threaded hole. The outer wall of the threaded ring is rotationally connected with a sliding sleeve, one end of the threaded ring is fixedly connected with a rotary knob, the outer wall of the threaded ring is in threaded connection with a movable ring, and the outer wall of the movable ring is fixedly connected with a connecting base. According to the metering pump, the rotary knob is rotated to drive the movable ring to slide on the outer wall of the threaded ring, and then the first movable frame is driven to pull the second movable frame, so that the second movable frame can be contracted and pulled out of the workbench, and the problem that most of existing metering pumps are fixed through bolts and cannot be pulled out of the workbench is solved. And the whole metering pump is inconvenient to assemble and disassemble.

The invention provides a permanent magnet journal sticking axle generator, which mainly comprises a stator and a shaftless rotor, and is characterized in that the stator mainly comprises a stator iron core and a winding; the shaftless rotor mainly comprises a rotor iron core, magnetic steel and a rotor support, the stator iron core is composed of a plurality of stator tooth iron core modules which are connected end to end, and stator tooth windings are wound on the stator tooth iron core modules; the rotor core is composed of a plurality of rotor core modules which are mutually connected end to end, magnetic steel is arranged in each rotor core module, the rotor support is of a split structure, and the rotor core is arranged on the outer circumferential surface of the rotor support. According to the invention, each tooth of a stator core is made into an independent stator tooth core module, and each stator tooth core module is wound with a stator tooth winding; and the rotor iron core is also manufactured into a modular structure in which each tooth part is on a rotor iron core module, so that convenience is provided for assembling, disassembling and hoisting the generator in a narrow space.

The utility model provides a hitching type ceiling joist convenient for quick assembly, which belongs to the technical field of ceilings, and comprises a main joist and a quick assembly and disassembly assembly, the quick assembly and disassembly assembly comprises a connecting groove arranged in the joist, the bottom of a secondary joist is provided with a sliding groove, and the interior of the connecting groove is slidably connected with two clamping heads. A damping rod spring is arranged between the two clamping heads, first hinge bases are arranged at the bottoms of the two clamping heads, the outer walls of the two first hinge bases are slidably connected with the sliding groove, supporting rods are hinged to the interiors of the two first hinge bases through hinges, and moving grooves are formed in the bottoms of the two supporting rods; the interiors of the two moving grooves are slidably connected with second hinge seats, the interiors of the two second hinge seats are hinged to connecting rods through hinges, the ends of the two connecting rods are hinged to third hinge seats through hinges, a holding device is arranged between the two third hinge seats, and the ends of the two clamping heads penetrate through the inserting grooves to be connected with the fixing grooves in a clamped mode.

The utility model discloses a new energy automobile motor assembly dismounting practical training platform, which comprises a base, a practical training plate and a movable plate, the practical training plate and the movable plate are arranged above the base and are used for supporting, the front end and the rear end of the movable plate are fixedly connected with supporting plates, and the movable plate drives the supporting plates to form a telescopic structure on the two sides of the base, and a clamping mechanism is arranged on the base. The clamping mechanisms are arranged on the practical training plate at equal angles, the clamping mechanisms are used for clamping and fixing the motor assembly, and the lower ends of the clamping mechanisms are fixedly connected with supporting seats. According to the new energy automobile motor assembly disassembly and assembly practical training platform, the practical training platform can be conveniently supported in an auxiliary mode, a motor assembly on the practical training plate can be conveniently and stably clamped, a motor is prevented from falling off from the practical training plate, and the practical training plate drives the motor assembly to move left and right, so that students around can better learn and observe the motor assembly, and the practical training platform is convenient to use. Therefore, students standing beside can also achieve good observation and learning effects.

The invention relates to the technical field of metal stamping, and provides a stamping die convenient to assemble and disassemble, the stamping die comprises a base, a hydraulic cylinder and a mounting plate fixedly connected to the bottom of the hydraulic cylinder, a bridge assembly and a die holder reset assembly are arranged at the top of the base, and the bridge assembly comprises a pair of rectangular grooves symmetrically formed in the top of the base; u-shaped stand columns are vertically inserted into the pair of rectangular grooves, and first screw holes are formed in the two sides of the base. According to the stamping die, through arrangement of the bridge assembly, main body building of the stamping die can be conveniently and rapidly completed, through cooperation of the connecting assembly and the connector, the purpose that the output end of the hydraulic cylinder and the top of the lower pressing plate are rapidly fixed is achieved, the stamping die is simple in structure, assembling efficiency is improved, meanwhile, disassembly is more convenient, and practicability is high. Daily detection and maintenance are facilitated, and the maintenance efficiency is improved.

The utility model belongs to the technical field of seed shifting devices, and particularly relates to a portable seeder for peanut planting, which comprises a main body support, a driving motor mounted on the inner side of the main body support, a wheel shaft rotatably mounted at the bottom of the main body support, two ends of the wheel shaft are respectively connected with a traveling wheel and the driving motor, and a butt joint support is mounted at the top of the main body support. A first screw joint plate, a second screw joint plate and a third screw joint plate are mounted on the butt joint support, the first screw joint plate is connected with a first butt joint mechanism, the front side of the first butt joint mechanism is connected with a seed shifting device single body, the second screw joint plate is connected with a second butt joint mechanism, a coulter mounting seat is mounted at the bottom of the second butt joint mechanism, and the bottom of the coulter mounting seat is connected with a coulter. According to the device, the number of the seed shifting device single bodies, the coulters and the soil covering mechanisms can be quickly adjusted in a quick assembly and disassembly mode, so that the seeding requirements of different terrains are met, and the device is extremely suitable for peanut planting work in terraced fields and sloping fields.

The utility model relates to the technical field of carriers, and discloses a photovoltaic module carrier which comprises a plane plate, a fixing device is fixedly installed on the outer surface of the front end of the plane plate, and the fixing device comprises a clamping groove plate, a plug pin buckle, a fixing block, a fiber bandage, a rubber strip and a nylon net. When the device is used, the clamping groove plates are installed at the front end and the rear end of the surface plate through the arranged fixing device, the plug pin at the lower end of the fixing block is buckled and inserted into the clamping groove plates, and the fiber bandage can be located at the upper end of the surface plate; the photovoltaic module at the upper end of the plane plate can be wrapped and fixed through the rubber strip and the nylon net, the situation that the photovoltaic module falls off in the carrying process is avoided, and the photovoltaic module is attached and fixed through the soft material, so that corners for fixing the photovoltaic module are not abraded, the use safety is improved, people can conveniently and rapidly assemble and disassemble the photovoltaic module, and the practicability is high. And the working efficiency of carrying the photovoltaic module is improved.

The utility model discloses a measuring device for underground exploitation, which comprises a storage device and a measuring device, the measuring device comprises a plurality of measuring rods with the same length, the storage device comprises a bottom plate, a support plate and a push-pull device, the support plate and the push-pull device are arranged in a crossed manner, the support plate is used for storing the measuring rods, and the push-pull device is used for storing the measuring rods. The measuring device further comprises an elastic rope, side openings allowing the elastic rope to penetrate through are formed in the side walls of the measuring rods and extend in the length direction of the measuring rods, one end of the elastic rope is connected with the bottom end of the first measuring rod, the other end of the elastic rope is connected with a tightening device, and the tightening device controls the elastic rope to be in a normal tightening state. The device can be freely assembled and disassembled, can accurately measure the depth, greatly improves the measurement efficiency, and is convenient to carry.

The utility model relates to the technical field of cable protection pipes, and particularly discloses an MPP cable protection pipe convenient to assemble, which comprises a protection pipe body, the protection pipe body is formed by combining an upper half pipe and a lower half pipe, an L-shaped clamping groove is formed in the top of the protection pipe body at the bottom, an L-shaped clamping block is arranged in an inner cavity of the L-shaped clamping groove, and the L-shaped clamping block is arranged in the inner cavity of the L-shaped clamping groove. An inner connecting cylinder is arranged on one side of the interior of the protection pipe body, two sets of connecting grooves are formed in the outer ring of the inner connecting cylinder, an outer connecting cylinder is arranged on the outer ring of the protection pipe body, and when the protection pipe body is overhauled or replaced, the connecting outer cylinder is detached through a connecting mechanism; when the cable protection pipe is used, the protection pipe body at the upper part is moved to align the protection pipe body at the lower part, at the moment, the L-shaped clamping blocks can be separated from the constraint of the L-shaped clamping grooves, the protection pipe bodies can be separated, subsequent replacement and cable maintenance are facilitated, and the problem that an existing cable protection pipe is difficult to assemble, disassemble and replace quickly is solved.

The present invention provides a monitoring node assembly and a monitoring system, including a mounting body, an operating rod, and an electromagnetic driver; a through cavity is formed inside the mounting body, one end of the operating rod forms a sealing portion that slides and seals with the cavity, and the other end extends out of the cavity to form an operating portion that cooperates with the electromagnetic driver; the electromagnetic driver cooperates with the operating portion to realize the telescopic movement of the sealing portion in the inner cavity; the sealing portion and the inner cavity wall form a sealed sampling cavity, and the sampling cavity is provided with a sensor interface; the sealing portion is provided with a water inlet and a water outlet that are connected to the sampling cavity. The present invention can introduce the water flow inside the water body into the sampling cavity through the sampling flow path, and amplify the water temperature change during leakage according to the difference in water temperature between the inside and outside of the pipe body, thereby improving the sensitivity of leakage detection. The present invention is a long-axis component as a whole, which is easy to assemble and disassemble and complies with the pipeline assembly principle.

The utility model relates to the technical field of false teeth, and discloses a rapid splicing type combined false tooth, which comprises teeth, a positioning rod is slidably connected in the teeth, a bolt is fixedly connected to the bottom of the outer wall of the positioning rod, a rotating shaft is rotatably connected in the positioning rod, a positive magnet is arranged on one side of the outer wall of the rotating shaft, and the outer wall of the rotating shaft is fixedly connected with the bolt. A negative magnet is arranged on the other side of the outer wall of the rotating shaft, the outer wall of the bolt is in threaded connection with a threaded cylinder, the bottom of the outer wall of the bolt is fixedly connected with an ejector block, a push plate is slidably connected into the threaded cylinder, a first spring is arranged in the threaded cylinder, and one end of the first spring is fixedly connected into the threaded cylinder. According to the combined false tooth disclosed by the utility model, the positioning rod rotates to drive the limiting plate to be inserted into the positioning rod, and meanwhile, the bolt is rotated into the threaded cylinder to be fixed, so that the problems that most of existing combined false teeth cannot assemble and disassemble single false teeth and cannot ensure the stability of the false teeth are solved, and the stability of the false teeth is improved.

Turbomachine and method for assembling / disassembling a rotor structure of the turbomachine are disclosed. A plurality of impeller bodies is supported on a tie bolt. Threadingly connecting a first coupling nut with the tie bolt to axially press the impeller bodies to define a compression section. The first coupling nut is arranged to apply a first coupling force within the compression section to hold the compression section attached during rotating operation of the turbomachine. Threadingly connecting a second coupling nut with the tie bolt to axially press a rotor shaft portion onto the compression section. The second coupling nut is arranged to apply a second coupling force to the rotor shaft portion to hold the rotor shaft portion affixed onto the compression section during a non-rotating condition of the turbomachine. The foregoing multi-nut coupling arrangement in a cost-effective and reliable manner provides user-friendly flexibility for assembly / disassembly of the rotor structure while maintaining a mechanically robust rotor structure.

The utility model discloses an automobile air conditioner pipe detection device, and relates to the technical field of air conditioner pipe detection. Comprising a water storage tank, a connecting shaft and a mounting frame, multiple sets of guide rods are symmetrically arranged on one side of the mounting frame, three sets of inflation pipes are arranged on one side of a gas collection shell in a penetrating mode, and sliding plates are movably arranged on the outer sides of the guide rods in a penetrating mode. According to the air conditioner pipe detection device, the sliding plate and other components are arranged, and the sliding plate is linearly assisted and guided through the guide rod, so that the use position of the sliding plate on the outer side of the guide rod can be flexibly adjusted, and the air conditioner pipes with different lengths can be conveniently detected and used by the detection device; according to the air conditioner pipe air tightness detection device, multiple air conditioner pipes can be conveniently assembled at the same time, the installation frame is an equilateral hexagonal frame, when the installation frame slowly rotates in the water storage tank, the effect of detecting the air tightness of the air conditioner pipes while assembling and disassembling the air conditioner pipes can be achieved, and therefore the working efficiency of the detection device is effectively improved.

The utility model relates to the technical field of building construction, and discloses a quickly assembled and disassembled stair handrail for building construction, which comprises two stand columns, first connecting pieces are fixedly connected to the upper ends and the lower ends of the opposite sides of the stand columns, and first cross rods are rotatably connected to the exteriors of the first connecting pieces. A second cross rod is installed at the end of the first cross rod through an adjusting assembly and used for adjusting the length of the handrail, a lifting plate is connected to the outer portion of the lower end of the stand column in an up-down sliding mode, a back plate is fixedly connected to the rear end of the lifting plate, and a tightening latch is fixedly connected to the lower end of the back plate. According to the stair handrail, the overall length of the handrail is adjusted through stretching and retracting of the second transverse rod relative to the first transverse rod, the handrail is made to meet the requirements of different stair lengths, the applicability and universality of the stair handrail are improved, the handrail is fixed to the edge of a stair through cooperation of the rotating cylinder and the stand column, operation is easy and fast, and the stair handrail is suitable for building construction. And temporary installation is used for guaranteeing the safety of constructors.

1. The name of the design product: motorcycle battery car direction assembly disassembly sleeve tool. 2. The use of the design product: sleeve tool for disassembling and assembling motorcycle and battery car direction assembly. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: combination use state figure 1.

This utility model discloses a connection structure for an extruder and a pipe die, including a first flange fixed to the extruder, a second flange fixed to the pipe die, and multiple bolts. The first flange has multiple first connection openings on its outer circumference, each extending radially along the first flange. The second flange has multiple second connection openings with the same position and shape as the first connection openings. Each bolt is provided with an anti-rotation portion, the thickness of which along the bolt's radial direction is no greater than the width of the first connection opening, and the width of which along the bolt's radial direction is greater than the width of the first connection opening. When each bolt passes through the corresponding first and second connection openings and is connected to a nut, at least a portion of the anti-rotation portion is located within either the first or second connection opening. This connection structure facilitates assembly and disassembly, effectively improving the reliability and installation efficiency of the connection between the extruder and the pipe die.