Abstract: A post of a tool wagon is provided, including a hollow structure thereinside, further including at least one slide, each of the at least one slide extending along a lengthwise direction of the post, each of the at least one slide being configured for a partition to be slidably installed thereto, wherein at least one said slide is configured with at least one engagement mechanism disposed therewithin, each of the at least one engagement mechanism includes a through opening arranged on the post and a blocking portion, the blocking portion extends in the hollow structure. A tool wagon is also provided, including a plurality of the posts described above.

Abstract: A turbine inspection stopper is provided, including a main body and a pressure gauge. The main body has a base portion, an annular flange which is laterally disposed around the base portion and an air passage, the annular flange is for being connected to one of two ends of a turbine, the base portion and the annular flange define an interior space, the interior space is for communicating with an interior of the turbine, and the air passage is for communicating with outside and the interior of the turbine; and at least one part of the pressure gauge is buried in the main body and communicates with the interior space.

Abstract: A smoke generator is provided, including a smoke generating unit and an airflow system. The airflow system has an air inlet passage, an air outlet passage and a vacuum generator, the vacuum generator communicates with the air inlet passage and the air outlet passage, and the vacuum generator has a suction portion communicating with the smoke generating unit.

Abstract: A post of a tool wagon is provided, including a hollow structure thereinside, further including at least one slide, each of the at least one slide extending along a lengthwise direction of the post, each of the at least one slide being configured for a partition to be slidably installed thereto, wherein at least one said slide is configured with at least one engagement mechanism disposed therewithin, each of the at least one engagement mechanism includes a through opening arranged on the post and a blocking portion, the blocking portion extends in the hollow structure. A tool wagon is also provided, including a plurality of the posts described above.

Abstract: A fluid-transferring expander, wherein a tube is disposed through a bladder structure, an expansion space is formed between the tube and the bladder structure, the tube is continuously extrudedly formed, the tube is formed with a first passage connected with a first fluid source and a second passage connected with a second fluid source and outside therein, and the tube is further formed with a through hole communicating with the expansion space and the first passage.

Abstract: An oil suction device is provided, including a main body and a sleeve member. A front end of the main body has a flow hole, an interior of the main body has a receiving space, one of two ends of a piston member is disposed in the receiving space and movable relative to the main body to allow a fluid to flow into or out of the receiving space through the flow hole, and the main body is light-penetrable. The sleeve member covers the main body, the sleeve member has at least one hollow-out portion formed radially, and the sleeve member and the main body are in different colors.

Abstract: A pumping unit is operable between sucking and discharging states. The main body has a sucking channel, a discharging channel and at least one blocking mechanism. The sucking channel communicates with outside and an interior of the pumping unit, the discharging channel communicates with a receiving space of a receiving unit and the interior of the pumping unit, and one said blocking mechanism is arranged within the sucking channel to block the sucking channel selectively. Wherein, when the pumping unit is in the sucking state, the blocking mechanism unblocks the sucking channel, and the fluid enters the interior of the pumping unit; when the pumping unit is in the discharging state, the blocking mechanism blocks the sucking channel, and the fluid enters the receiving space. A pumping device is further provided for sucking a fluid from the receiving space and discharging the fluid to outside.

Abstract: A height-adjustable cart is provided, including: a cart frame, having two first retractable rods which are disposed diagonally and two second retractable rods which are disposed diagonally, each of the first and second retractable rods having an upper rod and a lower rod which is retractably connected with the upper rod; two resilient engaging members, resiliently releasably positioning the upper rod and the lower rod of the two first retractable rods, respectively; two positioning members, removably connecting the upper rod and the lower rod of the two second retractable rods, respectively; at least one tray, connected with the first retractable rods and the second retractable rods.

Abstract: An injection device for diesel exhaust fluid includes a cylinder, a stopper, and an air tube. The cylinder encloses a receiving space. The cylinder has an opening at the bottom end. The stopper is pipe-shaped and has a stopping portion and a top portion at two opposite ends thereof. The stopper is arranged in the receiving space and is movable along the longitudinal direction of the cylinder. the stopping portion selectively plugs the opening of the cylinder so that fluid in the receiving space is unable to flow out via the opening. The air tube is inserted through the stopper and the opening of the cylinder to communicate with exterior. The air tube is positioned to the cylinder near the opening so that the air tube may not move with the stopper.

Abstract: A fuel changing device which is for connection with a fuel pipe or a fuel can is provided, including: a barrel, connected with a conduit portion communicating with an interior of the barrel; a plunger, including a piston movably received in the barrel and an operation rod connected with the piston and extending out of the barrel; an adapting mechanism, including an adapter connected to the conduit portion and at least one adapting tube, the adapter selectively detachably connected with one end of the adapting tube or for selectively detachably connected with a fuel connector of the fuel can, another end of the adapting tube being for detachably connected with the fuel pipe.

Abstract: An injection device for diesel exhaust fluid includes a cylinder, a stopper, and an air tube. The cylinder encloses a receiving space. The cylinder has an opening at the bottom end. The stopper is pipe-shaped and has a stopping portion and a top portion at two opposite ends thereof. The stopper is arranged in the receiving space and is movable along the longitudinal direction of the cylinder. the stopping portion selectively plugs the opening of the cylinder so that fluid in the receiving space is unable to flow out via the opening. The air tube is inserted through the stopper and the opening of the cylinder to communicate with exterior. The air tube is positioned to the cylinder near the opening so that the air tube may not move with the stopper.

Abstract: An oil suction device is provided, including a main body and a sleeve member. A front end of the main body has a flow hole, an interior of the main body has a receiving space, one of two ends of a piston member is disposed in the receiving space and movable relative to the main body to allow a fluid to flow into or out of the receiving space through the flow hole, and the main body is light-penetrable. The sleeve member covers the main body, the sleeve member has at least one hollow-out portion formed radially, and the sleeve member and the main body are in different colors.

Abstract: A turbine inspection stopper is provided, including a main body and a pressure gauge. The main body has a base portion, an annular flange which is laterally disposed around the base portion and an air passage, the annular flange is for being connected to one of two ends of a turbine, the base portion and the annular flange define an interior space, the interior space is for communicating with an interior of the turbine, and the air passage is for communicating with outside and the interior of the turbine; and at least one part of the pressure gauge is buried in the main body and communicates with the interior space.

Abstract: A smoke generator is provided, including a smoke generating unit and an airflow system. The airflow system has an air inlet passage, an air outlet passage and a vacuum generator, the vacuum generator communicates with the air inlet passage and the air outlet passage, and the vacuum generator has a suction portion communicating with the smoke generating unit.

Abstract: A recycling cleaning device includes a tub body, a sucking device and a tube. The tub body has a receiving space, an inlet communicating with the receiving space and a communication portion for communicating with the receiving space. The tub body is for arrangement on a barrel body and defines at least one passage with the barrel body. The sucking device is for disposed in the barrel body. The tube is connected with the sucking device and has an outlet. When the sucking device is disposed in the barrel body, the tube extends from an interior of the barrel body outside the barrel body through one of the passages, and the outlet is controllably arranged substantially toward the inlet of the tub body.

Abstract: A pumping device includes a pump and a connector. A piston is slidably disposed in a container of the pump. A pumping rod is connected with the piston with an end, and the other end of the pumping rod extends outward. The container has an opening at a bottom thereof, and a first connecting portion is formed around the opening. The connector has a cavity, an inlet channel, and an outlet channel. The inlet channel and the outlet channel communicate with the cavity respectively. The connector has a second connecting portion to be engaged with the first connecting portion to allow the cavity communicating with the opening of the container. The inlet channel only allows fluid entering the cavity, and the outlet channel only allows fluid leaving the cavity.