55results about How to "Short trip" patented technology

The utility model relates to a packaging box feeding mechanism which comprises a storage rack, a feeding mechanism, a feeding mechanism and a discharging mechanism. A plurality of packaging boxes are stacked on the storage rack. The conveying line is arranged on one side of the storage rack; the jacking module is arranged at the bottom of the storage rack and is suitable for driving the multiple packaging boxes to ascend and descend; a clamping module; after the clamping module clamps the packaging box located at the top of the storage rack and places the packaging box on the conveying line, the jacking module lifts the remaining packaging box by a distance equal to the thickness of the packaging box, and the remaining packaging box is to be clamped by the clamping module; through the arrangement of the jacking module mechanism, namely after the previous packaging box is clamped and placed on the conveying line, the jacking module drives the multiple packaging boxes to ascend to the thickness of one packaging box, clamping of the clamping module is facilitated, and therefore the clamping module does not need to descend in the packaging box clamping process, and the packaging box clamping efficiency is improved. And the descending time and the gradual increase of the descending stroke are avoided, so that the taking of the packaging box can be realized, and the descending stroke is reduced.

This application relates to a transfer station and bonding equipment, and pertains to the field of semiconductor packaging technology. The transfer station includes a first base, a rotary drive, and a platform assembly. The rotary drive is disposed on the first base. The platform assembly includes a second base and a platform. The second base is connected to the drive end of the rotary drive, and the platform is disposed on the second base. The platform includes at least a first platform and a second platform distributed around a rotation axis of the rotary drive. The first and second platforms are respectively used to carry different products. The rotary drive is used to drive the second base to rotate, thereby moving one of the platforms to a preset position and adjusting the platform at the preset position to a preset angle. This application can improve upon the problems of existing transfer stations, such as large space occupation, reduced production capacity, and high costs.

The utility model discloses a numerical control hydraulic control module, which relates to the numerical control hydraulic technical field, and comprises a base plate and a first U-shaped plate, the first U-shaped plate is fixedly arranged on the upper surface of the base plate, the top of the first U-shaped plate is fixedly provided with a first hydraulic cylinder, and the tail end of a piston rod of the first hydraulic cylinder extends to the lower part of the first U-shaped plate; a hexagonal hole is formed in the tail end of a piston rod of the first hydraulic cylinder, a hexagonal prism is slidably inserted into the hexagonal hole in a matched mode, a pressing rod is fixedly arranged at the lower end of the hexagonal prism, and the outer wall of the tail end of the piston rod of the hydraulic cylinder is fixedly sleeved with a second U-shaped plate; transmission mechanisms for driving the pressing rods to move relative to piston rods of the first hydraulic cylinders are arranged on the two sides of the second U-shaped plate. The hydraulic mechanism is provided with the auxiliary hydraulic mechanism, the pressing rod of the main hydraulic mechanism can be rapidly displaced, the stroke of the main hydraulic mechanism can be reduced, and the working efficiency is improved.

The utility model relates to an automatic feeding and discharging device for PCBs. According to the technical scheme, the automatic feeding and discharging device is characterized by comprising a rack; a suction cup moving mechanism is arranged on the rack; the suction cup moving mechanism is provided with an output end; a jointed board adsorption mechanism is arranged at the output end of the suction cup moving mechanism; a table top lifting mechanism is arranged on the rack and located below the jointed board adsorption mechanism. By arranging the table top lifting mechanism, the table top, used for transporting the PCB, on the skip car can be lifted into the moving range of the suction cup moving mechanism, and therefore the stroke of the suction cup moving mechanism is reduced; the position of the jointed board adsorption mechanism is adjusted through the suction cup moving mechanism, the jointed board adsorption mechanism adsorbs the multiple stacks of PCBs on the table top, the multiple stacks of PCBs are placed on the working table top of the depth control gong equipment side by side for board jointing, automatic feeding and discharging operation of the PCBs is achieved, the processing requirements of the PCBs of different specifications and numbers are met, the production efficiency is effectively improved, and the production cost is reduced. And errors caused by human factors are reduced.

The present application relates to the technical field of shield switch structure, and discloses a shield automatic switch structure and processing equipment, the shield automatic switch structure includes beam assembly, first drive mechanism, telescopic shield assembly and support connecting mechanism. When the shield automatic switch structure is used, the support connecting mechanism is arranged on the second side of the telescopic shield assembly, the support connecting mechanism occupies small floor space, and is convenient to arrange; the support connecting mechanism has small stroke and occupies small floor space; when the telescopic shield assembly is closed, the second side of the telescopic shield assembly is first connected and fixed on the first fixed support through the support connecting mechanism; when the telescopic shield assembly needs to be opened, the support connecting mechanism is disconnected from the first fixed support, the first drive mechanism drives the telescopic shield assembly to move away from the outer protection component, which can effectively prevent the telescopic shield assembly from being stuck during opening and closing, thereby effectively reducing the failure rate of the equipment, improving production efficiency and maintenance cost.

This utility model discloses a mold closing mechanism with a composite ejector cylinder, including a moving mold plate, which has a mold plate body and an outwardly extending protruding structure. The protruding structure is equipped with at least one main ejector cylinder and at least two auxiliary ejector cylinders, the stroke of the main ejector cylinder being greater than the stroke of the auxiliary ejector cylinders. An ejector guide plate is provided between the mold plate body and the protruding structure. The piston rod of the main ejector cylinder is connected to the ejector guide plate, while the piston rod of the auxiliary ejector cylinders is not connected to the ejector guide plate. Several ejector rods are provided on the ejector guide plate, penetrating the mold plate body. During the stroke of the auxiliary ejector cylinders, the main ejector cylinder and the auxiliary ejector cylinders together drive the ejector guide plate to complete the ejection action of the ejector rods. During the remaining stroke, the main ejector cylinder alone drives the ejector guide plate to complete the ejection action of the ejector rods. This mold closing mechanism with a composite ejector cylinder can provide a large ejector force in the initial demolding stage and achieve rapid ejection in subsequent strokes, combining large ejection force and high movement speed to improve production efficiency.

The invention discloses a longitudinal tube bundle type spray pipe extension section which comprises a conical barrel structure formed by arranging and connecting a plurality of longitudinal pipes in the circumferential direction. The inlet flange, the inlet collector ring, the small-end base plate and the outer wall of the conical barrel structure are closed to form an inlet collector cavity; the outlet collector ring is of an annular structure with an opening in the inner wall, and the opening position of the outlet collector ring is fixedly connected with the outer wall of the rear end area of the conical barrel structure through a large-end base plate; the outlet collector ring, the large-end base plate and the outer wall of the conical barrel structure are closed to form an outlet collector cavity; a radial inflow hole and a radial outflow hole are formed in the outer wall of the longitudinal pipe; the radial inflow hole is positioned in the inlet collector cavity; the radial outflow hole is positioned in the outlet collector cavity; coolant circulates in the longitudinal pipe serving as a cooling channel. The engine is simple in structural form, light in weight, small in flow resistance and capable of being used as a liquid rocket engine.

The invention provides a double-guide-wire sphincter incision knife, and relates to the field of medical instruments. The double-guide-wire sphincter incision knife comprises a catheter sheath, a shredding cavity and two guide wire cavities which are independent of each other are formed in the catheter sheath, and a rapid exchange opening is formed in the side wall of at least one guide wire cavity. The double-guide-wire sphincter incision knife solves the technical problem that in the prior art, a duodenal papilla sphincter incision knife is difficult in guide wire super-selection.

This utility model discloses a high-efficiency toothed sprocket production mold for powder metallurgy, relating to the field of sprocket production. It includes a lower mold base, with a support frame fixedly connected to the top of the lower mold base. Cylinders are installed on both sides inside the lower mold base, and a fixed plate is fixedly connected to the output end of each cylinder. An upper mold is fixedly connected to the bottom of the fixed plate. A powder box is also provided above the lower mold base, with a scraper and discharge port installed at the bottom of the powder box. A drive mechanism for moving the powder box is provided on the fixed plate. The opening and closing of the mold is achieved by driving the fixed plate and the upper mold up and down through the cylinders. Simultaneously, a rack and pinion transmission mechanism converts the up-and-down movement of the upper mold into the horizontal movement of the powder box. When the upper mold presses down for forming, the powder box automatically moves away from the mold hole to avoid interference. After forming, it automatically returns to the center position for powder filling. The entire process requires minimal manual intervention.

The application relates to the technical field of relays, in particular to a novel magnetic latching relay which comprises a shell, a contact mechanism fixedly installed in the shell, the contact mechanism comprising a first static foot and a second static foot, the first static foot and the second static foot being fixedly installed on one side in the shell, a first static contact being fixedly installed on the first static foot, a second static contact being fixedly installed on the second static foot, a rotating mechanism being rotatably connected to one side in the shell and located between the first static foot and the second static foot, two dynamic contacts being fixedly installed on the rotating mechanism and used for cooperating with the first static contact and the second static contact to realize circuit on-off, a pushing assembly being fixedly installed in the shell and used for driving the rotating mechanism to rotate, and an electromagnetic assembly being fixedly installed in the shell and used for driving the pushing assembly, through rotation of the rotating mechanism, the two dynamic contacts on the rotating mechanism are respectively attached to the first static contact and the second static contact, the single-contact stroke is shortened, and the working efficiency of the device is improved.

The utility model relates to hydraulic breaking hammer technical field especially hydraulic breaking hammer power assembly, include: drill rod seat for installing cylinder and drill rod, this drill rod seat is used for sliding installation drill rod, the piston is slidably installed in this cylinder, reversing valve, this reversing valve is installed on the cylinder and is equipped with the hydraulic oil circuit for the hydraulic oil flow circulation between it and the piston cavity in the cylinder, this reversing valve passes through reversing control hydraulic oil and enters the different cavity of piston for realizing piston reciprocating motion along the cylinder, energy accumulator, its installation is on reversing valve and is connected with the hydraulic oil circuit of reversing valve, is used for the hydraulic energy storage when piston is going up and the release hydraulic energy when piston is going down to increase the impact force when piston is going down, is used for solving the technical problem that the piston buffer of the breaking hammer in the prior art exists in the general existence of internal leakage and is hurt and the slow and long stroke of the frequency of attack.

This utility model relates to an auxiliary device for inductor production, including a support frame, a drive mechanism mounted on the support frame, a transport mechanism connected to the drive mechanism, and a tray-stacking auxiliary mechanism mounted on one side of the support frame. The drive mechanism includes a fixed plate mounted on the support frame, a drive component connected to one side of the fixed plate, and a transmission component connected to the output end of the drive component. An arc-shaped guide groove is provided on the other side of the fixed plate. The transport mechanism includes a moving plate, several material-picking components mounted on the moving plate, and a guide component. The transport mechanism of this utility model has multiple material-picking components. Driven by the drive mechanism, the transport mechanism can simultaneously move up and down reciprocatingly during movement. Multiple workstations can be transported simultaneously in one movement, resulting in fast and efficient operation. With the cooperation of the tray-stacking auxiliary mechanism, the transport mechanism only needs to perform the action of placing products onto the tray, shortening the travel distance and further improving work efficiency.

A plunger-type booster brake pump equipped with a one-way valve includes a housing assembly and a plunger assembly. The plunger assembly includes a plunger, a plunger sleeve, and a cup. One end of the plunger sleeve is movably disposed within the inner cavity of the housing assembly, forming a first volume chamber between the plunger sleeve and the inner cavity of the housing assembly. The cup divides the inner cavity of the housing assembly into a second volume chamber and a third volume chamber. A plunger cavity is provided at one end of the plunger adjacent to the plunger sleeve. The plunger cavity has first through holes evenly distributed around its axis that communicate with the second volume chamber, and a one-way valve is provided at the end adjacent to the first volume chamber. During operation, the plunger-type booster brake pump shortens the stroke and increases braking force by controlling the connection and disconnection between the first and second volume chambers through the one-way valve. At the same time, it avoids the pressure drop in the first volume chamber caused by the connection between the first and third volume chambers, solving the problem of the downward bending inflection point in the pedaling force curve and ensuring the braking safety of tractors or large motor vehicles.

This utility model relates to a universal core clamping fixture for cylinder blocks and cylinder heads. The fixture includes a support, movable clamping arms, and a stroke detection component. A pair of movable clamping arms are mounted on the support and slidably connected to it. The two movable clamping arms are close to each other to clamp the sand core. The stroke detection component includes a limiting block, a swing block, and a limiting cylinder. The limiting block is fixedly mounted on one of the movable clamping arms. The first end of the swing block is hinged to the support. The limiting cylinder is mounted on the support, and its piston rod is connected to the swing block. The second end of the swing block is located on the path of the limiting block's movement to limit its displacement. This invention allows the limiting cylinder to rotate the swing block according to the length of the sand core, thereby changing the maximum position that the limiting block can move on the movable clamping arm. While ensuring that the fixture can adapt to sand cores of different lengths, it reduces the stroke of the two movable clamping arms and shortens the clamping time for small workpieces.

The invention relates to a rocker device for a valve train of an internal combustion engine, having at least one rocker (1) which is pivotably arranged on a rocker shaft (3) with one lever (1a) for actuating the valve side of at least one gas exchange valve (4, 5) of the internal combustion engine and with two levers (1b, 1c) for the pivotably drivable actuating side, wherein the levers (1a, 1b, 1c) are pivotably supported on the rocker shaft (3) relative to one another and, in order to switch the rocker (1), the first lever (1b) of the actuating side can be coupled to the lever (1a) of the valve side by means of a first coupling mechanism (9) in order to transmit a first lift movement for valve actuation, and the second lever (1c) of the actuating side can be coupled to the lever (1a) of the valve side by means of a second coupling mechanism (10) in order to transmit a second lift movement for valve actuation.

This utility model relates to the field of resistor device technology and discloses a water-cooled resistor device, including a mounting base. A water-cooling mechanism is installed in the middle of the top wall of the mounting base. The function of the water-cooling mechanism is to dissipate heat from the resistor element. The water-cooling mechanism includes a cavity shell. Multiple water inlets are equidistantly connected to the top of the cavity shell, and water outlets are provided on the right side of each of the multiple water inlets. A central sleeve runs through the interior of the cavity shell, and a partition component is installed on the outer wall of the central sleeve. In this utility model, the central sleeve conducts heat to the cooling water, the partition component divides the space inside the cavity shell into multiple independent cavities, and the spiral blade acts as a spiral guide to make the coolant spiral forward. This mechanism can shorten the travel distance of the coolant in each heat dissipation cycle and solve the problem of inconsistent heat distribution in different parts of the resistor element and reduced actual heat dissipation efficiency in the prior art.

The utility model belongs to the technical field of oil and gas storage and transportation equipment, and discloses a pipeline valve chamber and an oil and gas pipeline. The pipeline valve chamber comprises a main pipeline section, an upstream branch section, a downstream branch section, a second block valve and an emptying section. One end of the main pipeline section is connected to the upstream pipeline, the other end of the main pipeline section is connected to the downstream pipeline, and the main pipeline section is provided with a first block valve; one end of the upstream branch section communicates with the main pipeline section, and the upstream branch section is located on the side, close to the upstream pipeline, of the first block valve; one section of the downstream branch section communicates with the main pipeline section, the downstream branch section is located on the side, close to the downstream pipeline, of the first block valve, and the upstream branch section communicates with the downstream branch section; the second block valve is arranged between the upstream branch section and the downstream branch section; the emptying section comprises an emptying pipe and an emptying valve, and the emptying pipe is communicated with the upstream branch section, so that the stroke of oil gas is shortened, residues in the upstream branch section and the downstream branch section are reduced, the working efficiency is high, and the operation is convenient.

The application discloses a cleaning system control method and a water storage bucket closing method, and belongs to the technical field of cleaning equipment. The control method of the cleaning system comprises the following steps: controlling a first closing device to move towards a water storage bucket opening until the first closing device abuts against an opening cover plate, and pushing the opening cover plate to a first closing position; and controlling a second closing device to move towards the water storage bucket opening until the second closing device abuts against the opening cover plate, and pushing the opening cover plate to a second closing position to close the water storage bucket. The closing operation of the water storage bucket is divided into two parts, so that the opening cover plate of the water storage bucket and the second closing device can be prevented from being damaged due to serious collision and extrusion.

The utility model provides an electric vehicle parking station which is characterized in that the electric vehicle parking station comprises a storage cavity on the upper layer and a parking chamber on the lower layer, the storage cavity and the parking chamber are separated by a partition plate, and the storage cavity is used for storing granular fire extinguishing materials; the separating plate is provided with a discharging opening, an opening and closing device is installed at the discharging opening and comprises a sliding plate provided with a through hole, the sliding plate is located above the separating plate, the sliding plate can be driven by a driving device to move on the separating plate, and therefore the through hole and the discharging opening are aligned or staggered. Therefore, the discharging opening is opened or closed; when a fire occurs in the parking chamber, the opening and closing device opens the discharging opening, and the granular fire extinguishing materials fall into the parking chamber to extinguish fire. Once a fire occurs, the granular fire extinguishing material can be released to extinguish the fire by opening the discharging opening, and the granular fire extinguishing material can be put back into the storage cavity or a new granular fire extinguishing material can be supplemented after the fire is extinguished, so that the fire extinguishing efficiency is high, and the granular fire extinguishing material can be repeatedly used.

This invention relates to an extruder, and more particularly to a high-efficiency automatic dry powder forming hydraulic press driven by a three-axis CNC bidirectional pump servo. The invention provides a high-efficiency automatic dry powder forming hydraulic press driven by a three-axis CNC bidirectional pump servo, comprising a cabinet, a table, a lower power assembly, and an upper power assembly. The table is bolted to the cabinet. The lower power assembly is mounted on the table and provides an upward thrust for dry powder forming. The upper power assembly is mounted on the upper part of the cabinet. The top cylinder of this invention is fixed with a flange, which is directly connected to the table, eliminating the need for large nuts for tightening. This results in a simple structure and easy disassembly. Furthermore, this invention indirectly transmits the extrusion thrust through air cushion blocks, allowing for a shorter stroke of the top cylinder, reducing the overall height of the equipment, and making the structure more compact.

The utility model relates to an integrated glue spraying atomizing valve, including valve body subassembly, first solenoid valve and second solenoid valve, install valve rod cylinder, glue outlet channel, atomizing gas channel and valve rod in valve body subassembly inside, be connected with the glue inlet, first air inlet and second air inlet on valve body subassembly, still be provided with a plurality of air passages in valve body subassembly, first solenoid valve and second solenoid valve install on valve body subassembly, the air inlet of first solenoid valve is communicated with first air inlet through air passage, the outlet end is communicated with valve rod cylinder through air passage, the air inlet of second solenoid valve is communicated with second air inlet through air passage, the outlet end is communicated with atomizing gas channel through air passage. The integrated glue spraying atomizing valve sets up a plurality of air passages in valve body subassembly, so that first, second solenoid valve can be connected with first, second air inlet through air passage respectively, need not to set up the connecting air pipe additionally, to make the assembly connection of atomizing valve simple and convenient, atomizing valve realizes high frequency high speed response, guarantees atomizing effect.

This utility model relates to the field of switch structures, and particularly to an eccentric rotary double-break three-position disconnecting switch for 40.5kV gas-insulated switchgear. The switch includes an isolating stationary contact, a circuit breaker stationary contact, a grounding stationary contact, and a disconnecting switch. The disconnecting switch includes a three-position switch conductor, an insulating support structure, and a rotating shaft. The insulating support structure is fixedly connected to the three-position switch conductor. The rotating shaft is sleeved with the insulating support structure, allowing the three-position switch conductor to rotate around the center of the shaft. The isolating stationary contact, circuit breaker stationary contact, and grounding stationary contact are spatially arranged in a triangle, with the rotating shaft located at the circumcenter of this triangle, forming an eccentric structure. By spatially distributing the isolating stationary contact, circuit breaker stationary contact, and grounding stationary contact in a triangular pattern, and with the rotating shaft located at the circumcenter of the triangle to form an eccentric structure, the conductor rotation path is significantly shortened, resulting in a more compact overall layout, suitable for electrical cabinets with limited space.

The application is suitable for the technical field of rope weaving, and provides a loop-eye rope production device and a weaving method. The device comprises a base, a weaving mechanism arranged on the base, a loop-eye mechanism, at least two groups of rope clamping assemblies, a work station reciprocating assembly, a lifting assembly, and a direction changing assembly. The work station reciprocating assembly drives the rope clamping assemblies to reciprocate between a preset working position and a preset resting position. The lifting assembly drives the rope clamping assemblies to reciprocate between a first height and a second height. The direction changing assembly changes the direction of the end of the rope segment from pointing away from the base to pointing towards the base. The two groups of rope clamping assemblies are alternately lifted from the first height to the second height at the preset working position. Before one group of rope clamping assemblies moves from the preset working position to the preset resting position and falls from the second height to the first height, the other group of rope clamping assemblies is placed at the preset working position at the first height and clamps the rope segment. The components work cooperatively, so that the two groups of rope clamping assemblies continuously alternate work, the continuous production of the loop-eye rope is realized, and the production efficiency of the loop-eye rope is improved.

The utility model provides a kind of tooling for replacing belt conveyor carrier roller, it is related to carrier roller replacement field, the scheme used is: including support piece, still include: mounting seat, the mounting seat includes bearing piece, limit board and fastening plate, the limit board is connected with the bearing piece, the limit board can be butted on groove type carrier roller frame crossbeam, the bearing piece is located groove type carrier roller frame side, the bearing piece is horizontally provided with connecting rod on the side close to groove type carrier roller frame, the connecting rod can be from one side and be connected with the fastening plate screw thread with the support of groove type carrier roller frame, the fastening plate can be on the other side and the support of groove type carrier roller frame butts;Lifting assembly, the lifting assembly is set on the bearing piece, the upper portion of the lifting assembly is provided with the support piece, and the support piece can lift belt.The utility model can be directly installed on groove type carrier roller frame and used, avoid insufficient lifting stroke, and it is flexible and convenient to use.

This invention discloses a hydraulic steering device and an all-terrain vehicle hydraulic steering system. The steering gear 6 of the hydraulic steering device adjusts its displacement via a variable displacement control cylinder 9, which is controlled by an electro-proportional two-position three-way directional valve 11. The opening of the oil circuit within the electro-proportional two-position three-way directional valve 11 is controlled by an electrical signal converted from vehicle speed. When the vehicle speed increases, the displacement of the steering gear 6 decreases; when the vehicle speed decreases, the displacement of the steering gear 6 increases. The outlet of the variable displacement pump 1 is connected to a steering oil circuit switching valve 7 via a one-way valve 4. The steering oil circuit switching valve 7 connects the steering gear 6 and the steering cylinder 3. This invention addresses the problem of easy rollover and fishtailing in hydraulically driven all-terrain vehicles at high speeds by providing a hydraulic steering control system that links vehicle speed and steering wheel angle control, adjusting the control ratio of steering wheel angle and overall vehicle angle according to vehicle speed.

This utility model discloses a rechargeable base station, belonging to the field of photovoltaic robot technology. It includes a base station body, which is tilted. Support legs are symmetrically welded and fixed to the bottom of the base station body. A photovoltaic panel is fixedly installed on the top of the base station body. A battery box and a solar inverter are fixedly installed on the rear side wall of the base station body. An automatic charging base is installed at the bottom of the interior of the base station body. A tilted guide plate is fixedly installed at the bottom of the station entrance of the base station body. This utility model achieves full-process autonomy of solar power generation, energy storage, and power supply through the photovoltaic panel, solar inverter, and battery box, reducing grid dependence and effectively responding to emergencies. The automatic charging base interacts with the robot in real time, achieving millimeter-level position calibration to avoid charging deviation. The circuit board integrates power monitoring and fault diagnosis functions for easy back-end management.

The application provides a battery box carrying device, belonging to the technical field of workpiece carrying; the battery box carrying device is installed on an injection molding mechanism, and comprises a cross beam, a moving plate, a connecting beam, a first roller, a first lifting mechanism, a stand, a turnover mechanism, a mounting plate, a displacement mechanism, a carrying mechanism, a workbench, a second lifting mechanism, a lifting plate and a pushing mechanism; the second lifting mechanism drives the lifting plate to move upward to shorten the distance between the lifting plate and the mounting plate, thereby shortening the stroke of the downward movement of the first lifting mechanism to reduce the production cost of the product; the displacement mechanism drives the carrying mechanism to move a short distance to accurately control the moving distance of the carrying mechanism, thereby ensuring that the carrying mechanism can pick up the battery box workpiece to avoid inaccurate control of the moving distance of the carrying mechanism, which causes the carrying mechanism to be unable to pick up the battery box workpiece, thereby improving the use experience of the product.

The utility model relates to the technical field of expansion joint, and disclose a steam pressure balance expansion joint of steam pipeline of steam turbine of steamer, solved the expansion joint of current cannot adjust the pipeline axial travel according to the use demand, when the pipeline axial displacement is too big, the damage of pipeline is easy to cause, reduces the problem of pipeline service life, it includes the mounting ring, the one side fixed mounting of mounting ring has left bellows, the other side fixed mounting of mounting ring has right bellows, the one end fixed mounting of left bellows away from mounting ring has first butt joint, the one end fixed mounting of right bellows away from mounting ring has second butt joint, the surface symmetrical fixed mounting of first butt joint has two left support seat, the one side fixed mounting of left support seat all has the sleeve, and the one end of sleeve all inserts and is equipped with the plug rod, this expansion joint can adjust the pipeline axial travel according to the use demand, avoid the damage when the pipeline axial displacement is too big, improve the service life of pipeline.

The utility model relates to the technical field of vulcanizing machines, in particular to an agricultural tire bladder vulcanizing machine, which solves the problems of slow movement and troublesome installation of an oil cylinder of outer tire vulcanizing process equipment on the existing mechanical equipment, and comprises a rack, a hydraulic station and a plurality of groups of stamping components, the device sequentially comprises a ring seat, a middle platform, an upper platform and a main oil cylinder from bottom to top in the vertical direction, and longitudinal displacement adjustment of the main oil cylinder is achieved through a push-pull assembly at the top of a rack. Piston rods of the side pulling oil cylinders are connected with the upper platform to drive the upper platform to lift; the adjusting assembly is used for dynamically adjusting the stamping stroke of the main oil cylinder. The utility model has the advantages that a single main oil cylinder is changed into a sectional design, so that the working efficiency is improved, the lifting time of the vulcanizing machine is shortened, a user does not need to dig down a foundation, and the use is convenient.