306 results about "Hand pump" patented technology

The present invention relates to the technical field of hand pump, in particular to a novel single-material hand pump, which includes a pressure head, a valve stem, an elastic part and a cylinder, wherein the bottom of the pressure head is fixedly connected with the valve stem, the cylinder is arranged at the bottom of the valve stem, the valve stem is connected with the cylinder in an embedded way, not only the elliptical columns contract uniformly under pressure and have good resilience, but also the elastic part is made of elastoplastic, the separate removal of metal spring is not required for saving the treatment time and improving the environmental protection, and the air holes are used for absorbing or discharging the compressed air inside the elastic part, thereby solving the problems of internal negative pressure, failure to reset the elastic part and retract the elastic part.

A first mounting cavity, a second mounting cavity, a manual oil suction channel, an electric oil suction channel, a working port A and a working port B are formed in a valve block, a valve sleeve is mounted in the first mounting cavity, a first oil channel communicates with an oil tank through the manual oil suction channel, the first oil channel communicates with a second oil channel, and the second oil channel communicates with a second oil channel; a first check valve is arranged in the first oil channel, a manual pump assembly is arranged on the valve block, the electric oil suction channel is communicated with the second oil channel through a third oil channel, the motor pump assembly can drive oil in the oil tank to be pumped to the second oil channel through the electric oil suction channel and the third oil channel, a second check valve is arranged in the third oil channel, and a distribution shaft is arranged in the second installation cavity. The distribution shaft is provided with a first distribution oil channel and a second distribution oil channel which are arranged in an isolated mode, the second distribution oil channel is communicated with the working port A and the working port B in a switching mode through the distribution shaft, a throttling block is arranged in the second distribution oil channel, throttling holes are formed in the throttling block, and through the arrangement, the integration level and safety are higher.

The utility model relates to an EHA integrated hydraulic supporting leg which comprises a hydraulic cylinder, a motor and an oil pump, the motor drives the oil pump, two ends of the oil pump are connected with a hand pump in parallel, one end of the oil pump is connected with a rodless cavity of the hydraulic cylinder through a first channel, the other end of the oil pump is connected with a rod cavity of the hydraulic cylinder through a second channel, and the oil pump is communicated with one end of a closed oil tank. The other end of the closed oil tank is communicated with a first hydraulic control one-way valve and a second hydraulic control one-way valve respectively, the first hydraulic control one-way valve and the second hydraulic control one-way valve are communicated with a first channel and a second channel respectively, a two-way overflow valve is arranged between the first channel and the second channel, and the first channel is provided with a balance valve which is communicated with the second channel through a third channel. And a first hydraulic lock and a second hydraulic lock are respectively arranged on the first channel and the second channel. According to the utility model, the control precision is higher, the efficiency is higher, the integration degree is better, the locking effect is obviously improved, and the safety and the changeable emergency capability of the whole system are improved.

The invention discloses a point load experiment device for measuring rock deformation parameters, which comprises a device frame, a loading device and a control monitoring system, and the loading device and the control monitoring system are both mounted on the device frame. The device frame is mainly composed of a sectional material, a T-shaped connecting plate, a right-angle connecting piece and a columnar connecting circle. The loading device is mainly composed of a point load upper pressure head, a point load lower pressure head, a receiving disc, a hydraulic jack, a first quick connector, a manual pump, a second quick connector, an unloading valve and a connecting pipe. The control monitoring system is composed of a pressure sensor, a laser distance measuring sensor, a bearing piece, a lead screw, a linear rail, a sliding block, a stable bearing piece, a motor connecting piece, a coupler, a motor, a power source and a control box. The traditional point load experiment is combined with mechanical transmission, hydraulic transmission, a sensor technology, an automatic control technology and the like, so that the determination of the rock point load strength, and the determination of rock deformation parameters and corresponding stress-strain curves under the action of the point load are realized.

The utility model relates to the technical field of breathing machines, and discloses a portable noninvasive breathing machine which comprises a shell, a connecting box is arranged in the right side of the shell, air bags are installed on the left side and the right side of the connecting box, an exhaust pipe is arranged on the rear side of the connecting box, an air inlet pipe is arranged on the front portion of the connecting box, and a filtering mechanism is arranged on the front portion of the air inlet pipe. One-way valve mechanisms are arranged in the opposite sides of the air inlet pipe and the air outlet pipe. According to the portable noninvasive breathing machine, the compression cover is rotated, the compression cover is detached from the right end of the shell, then a hand penetrates through the handle and holds the compression cover, the compression cover is pressed in a reciprocating mode, the compression cover is made to press the air bag in a reciprocating mode, manual pumping can be carried out, temporary emergency use can be carried out in a power-off state, and the portable noninvasive breathing machine is convenient to use. After the filtering sponge is replaced, the filtering box is inserted into the air inlet pipe, the knob is loosened, the torsional spring can reset the knob, the sliding groove can be blocked through the knob, the filtering box is prevented from falling off, and mounting and dismounting are quite easy and convenient.

A flat-pack liquid dispensing station comprised of sheet material and configured to store or use a variety of liquid containers including plastic gallon bottles affixed with liquid dispensing hand pumps. The dispensing station may further comprise a shelf with an opening to accommodate the head of a pump and aid in restricting the movement of the liquid container.

The emergency falling control system comprises a manual pump, a pressure gauge and a two-position two-way manual reversing valve which are arranged on the side face of a rotary table, and the manual pump is connected with a second oil pipe, a third oil pipe, a fourth oil pipe and a fifth oil pipe and further connected with a second balance valve connected with a two-arm telescopic cylinder. The third balance valve is connected with the two-arm variable-amplitude cylinder, the fourth balance valve is connected with the one-arm telescopic cylinder, a rotary brake is arranged in the rotary table, the rotary brake is connected with a shuttle valve through a sixth oil pipe, the rotary brake is connected with a rotary motor, and a rotary cushion valve is arranged between the rotary motor and the shuttle valve. According to the emergency falling control system of the large-height overhead working truck, the manual pump is connected into the control oil way, and due to the fact that the control oil way only transmits pressure and does not transmit flow, labor is saved during operation.

According to the emergency operation method based on the crane winch, a three-way ball valve is switched to an electric emergency state, so that an emergency electromagnetic valve is powered on, hydraulic oil of a hydraulic oil tank is connected to the winch through the emergency electromagnetic valve, braking of the winch is released, the winch drives a winch load heavy object to descend, and the descending speed is controlled through a throttling valve; if the electric emergency state cannot be started, a manual emergency state is switched through the three-way ball valve, the manual pump is manually opened, hydraulic oil of the hydraulic oil tank is communicated with the winch through the manual pump, brake of the winch is released, the winch drives the winch load weight to descend, and meanwhile the descending speed is controlled through the throttling valve; in this way, under the dual emergency states of electric emergency and manual emergency, it is ensured that the winch can be rapidly controlled to lower the loaded heavy object, and therefore potential safety hazards caused by accidental mistaken touch operation to operators on site are avoided.

A fluid control system (100, 200) for controlling a flow of a process fluid can include an actuator (104, 204) and an energy storage system (102, 202). The actuator can be provided to actuate the valve (120) in order to control the flow of the process fluid, and the energy storage system can actuate the actuator. An energy storage system (100, 200) can include an accumulator (106, 206) in fluid communication with an actuator and a manual pump (108, 208) arranged to charge the accumulator (106, 206).

The utility model relates to the field of motor and gear assembly, and discloses a motor and gear interference connection device, which is used for interference connection of an inner taper hole of a motor shaft and a taper end of a gear, and comprises a handheld hydraulic cylinder, a fastener, a screw rod and a manual pump, two ends of the screw rod are respectively connected with the motor shaft and the fastener; one end of the handheld hydraulic cylinder is tightly attached to the end face, away from the taper end, of the gear, and the other end of the handheld hydraulic cylinder is tightly attached to the fastener; the handheld hydraulic cylinder is provided with a hydraulic combination connector communicated with the interior of the piston cavity, the hydraulic combination connector is connected with a manual pump, and the manual pump provides required hydraulic pressure to drive the handheld hydraulic cylinder. The device can determine the press-in force of the gear, is small and portable, is suitable for indoor and outdoor assembly, and cannot cause damage to threads in the inner hole of the motor shaft due to the assembly problem.

The utility model provides a quick emergency control system for a hydraulic crane. The quick emergency control system comprises a manual pump, an oil cylinder, a lifting motor and a hydraulic rotary motor, the lifting motor is connected with the main valve through a winch control valve group; the winch control valve group comprises a first shuttle valve, a balance valve, a second hydraulic reversing valve, a one-way pressure reducing valve, a third hydraulic reversing valve, a second speed regulating valve, a second hydraulic control one-way valve, a second oil supplementing valve and a second shuttle valve; wherein the port A is connected with the port A1 through the second hydraulic reversing valve, the port B is connected with the port B1 through the balance valve, the first shuttle valve is arranged between the A-A1 oil way and the B-B1 oil way in parallel, and the middle position of the first shuttle valve is sequentially connected with the second shuttle valve, the second hydraulic reversing valve and the one-way pressure reducing valve; and an FL port is sequentially connected with a second oil supplementing valve, a second speed regulating valve and a third hydraulic reversing valve. According to the system, the high-efficiency control valve group is integrated and comprises a plurality of hydraulic reversing valves and speed regulating valves, so that the system can respond quickly, and the quick action of the lifting and rotary motor is realized.

The present invention belongs to the technical field of rail trains, and relates to a rail train hydraulic brake system slow-release device. The present invention also relates to a control method for a rail train hydraulic brake system slow-release device. A reversing valve module (A) includes a shuttle valve (1), a first pressure switch (2), and a second pressure switch (3). A manual pump module (B) includes a manual pump (4), an oil tank (5), and a pressure relief valve (6). The shuttle valve (1) is connected to the oil tank (5) through a first pipeline (7). A manual pump (4) is provided on the first pipeline (7). The shuttle valve (1) is connected to an auxiliary relief unit (9) through a second pipeline (8). The shuttle valve (1) is connected to a clamp (11) through a third pipeline (10). The first pipeline (7) is connected to the pressure relief valve (6). The rail train hydraulic brake system slow-release device of the present invention is easy to operate, can reliably complete relief and braking, effectively prevents the risks caused by misoperation and forgetting to restore the gear position, and reduces the probability of misactivation.

The present invention provides a hydraulic system and a road roller. The hydraulic system includes: a pressure oil source; an oil tank; a first control valve, the oil inlet of the first control valve is connected to the pressure oil source; a brake, connected to the working oil port of the first control valve; a manual pumping device, connected between the oil tank and the brake; when the road roller is in a first brake release mode, the pressure oil source supplies oil to the brake; when the road roller is in a second brake release mode, the manual pumping device is connected to the oil tank to supply oil to the brake. The hydraulic system of the present invention can release the parking brake through the manual pumping device when the engine is turned off, making it easy to move the road roller to a safe area or maintenance area by means of a trailer or other equipment. At the same time, it can effectively reduce the potential safety hazards caused by the failure of the brake to obtain the required working oil pressure in time due to damage to the road roller, power failure, etc.

The invention discloses super-moisture-absorption polyester fiber production equipment and a production process thereof, and belongs to the technical field of polyester fiber production equipment. The super-moisture-absorption polyester fiber production equipment comprises a machine box, a cooling chamber, a drying chamber and a water storage chamber are arranged in the machine box, the water storage chamber is arranged below the cooling chamber, the super-moisture-absorption polyester fiber production equipment further comprises an installation frame fixedly installed on the top of the machine box, and a sealing box is fixedly installed on the installation frame; a second drainage pipe facing the interior of the cooling chamber is fixedly mounted at the bottom of the sealing box, a first control valve is arranged on the second drainage pipe, and a second water inlet pipe is fixedly mounted on the side wall of the sealing box; water circulation is achieved through the siphon principle, the service time of the electric pump body is remarkably shortened, energy consumption of cooling water circulation is saved, in addition, a hand pump can be adopted for water pumping, energy consumption is further reduced, the probability that the pump body is damaged is reduced, and the service life of equipment is prolonged.

The hydraulic manual pump convenient to carry comprises a pump body and a handle, the handle is arranged at one end of the top of the pump body through a connecting block, a supporting frame is arranged in the middle of one side of the pump body, annular blocks are arranged at the two ends of the outer side of the supporting frame, and a transverse first lead screw is arranged at the position, corresponding to a groove, in the supporting frame through a bearing seat; first threaded blocks are connected to the positions, corresponding to the annular blocks, of the two ends of the first lead screw through reverse threads, one sides of the first threaded blocks are connected with the inner sides of the annular blocks through open grooves, a first bottom block is arranged at the end, close to the connecting block, of the bottom of the pump body, and a second lead screw is arranged in a groove in the top of the first bottom block through a bearing seat; the two ends of the second lead screw are connected with second threaded blocks through reverse threads, and L-shaped supporting blocks are arranged at the bottoms of the second threaded blocks. According to the utility model, through the shoulder strap bearing device, the carrying is more convenient, and the supporting area of the bottom can be increased during use.

The light-weight fender support comprises a tubular beam, at least two fender supports are arranged on the outer side of the tubular beam, an oil pump support is arranged between every two adjacent fender supports, the oil pump supports are provided with a plurality of mounting holes formed at intervals, an electric pump button supporting plate is arranged at the front end of each oil pump support, and an electric pump button is arranged on the electric pump button supporting plate. A base is arranged at one end of the tubular beam and used for being connected with a frame. The oil pump support with the electric pump button supporting plate is arranged between the two adjacent fender supports, so that the oil pump support can be provided with a manual pump or an electric pump, the occupied space of the oil pump support is reduced, meanwhile, the oil pump support is light, and the problem that in the prior art, a fixing plate of a single structure is adopted for the oil pump support, and cost is low is solved. The technical problems that the weight of a support assembly is increased and the light weight level of a whole vehicle is limited due to the fact that the design can only meet the fixing requirement of a manual pump and an independent fixing support needs to be additionally arranged to meet the installation requirement of an electric pump are solved.

The utility model discloses an adjustable pressure reducing valve structure of an airplane wheel jack, which relates to the field of pressure reducing valves and comprises a hydraulic manifold block, a one-way valve is arranged at the bottom of the hydraulic manifold block and comprises a one-way hole arranged at the bottom of the hydraulic manifold block, and a one-way valve steel ball and a one-way valve seat are sequentially arranged in the one-way hole from top to bottom. An overflow valve is arranged on one side of the hydraulic integrated block and comprises an overflow hole formed in one side of the hydraulic integrated block, and an overflow valve steel ball, an overflow valve seat, an overflow valve spring and an overflow valve element are sequentially arranged in the overflow hole from inside to outside. Compared with an existing pressure reducing valve, the pressure reducing valve has the advantages that the space of the pressure reducing valve is effectively saved, good pressure reducing performance is guaranteed, the pressure difference between the pressure of a low-pressure hand pump and the pressure of a high-pressure hand pump is reliable, pressure reduction is achieved, and the pressure reducing valve is compact in structure, light in weight and small in size.

The utility model discloses a transverse moving device which comprises two C-shaped frames, a lead screw rectangular pipe is arranged between the two C-shaped frames, universal wheels are arranged at the two ends of the lower walls of the two C-shaped frames, a supporting mechanism is arranged between the two C-shaped frames and the ground, and two force arm rods are symmetrically and movably arranged on the side wall of one side of the lead screw rectangular pipe. A hydraulic cylinder and an enclasping limiting piece are connected between the two force arm rods, round pipes are rotationally arranged on the side walls of the two force arm rods correspondingly, the other ends of the two round pipes are connected with an airplane wheel limiting plate, and two first rollers and two second rollers are rotationally arranged between the force arm rod and the airplane wheel limiting plate which are located on the same side correspondingly. And a manual pump is mounted on the side wall of the other side of the screw rod rectangular pipe, and the manual pump and the hydraulic cylinder are arranged in a matched mode. The utility model relates to the technical field of transverse movement of unmanned aerial vehicles. According to the transverse moving equipment, the hydraulic rods in the hydraulic cylinders contract to drive the airplane wheel limiting plates to be lifted through oil return of the manual pumps, and stable holding and lifting of the unmanned airplane wheels are achieved.

The invention provides a hydrate formation-decomposition process isotope continuous monitoring device and method, and is applied to the field of natural gas hydrate development, the device comprises: a high pressure reaction system comprising a rubber cylinder, a stainless steel shell, a liquid inlet valve and a hand pump; the fluid control and automatic sampling system comprises a vacuum pump, an electric back pressure valve, a gas sampling line, a one-way valve, a gas inlet valve, a ventilation pipeline and a high-pressure gas cylinder; the continuous analysis and monitoring system comprises a first temperature sensor, a second temperature sensor, a first pressure sensor, a second pressure sensor, a third pressure sensor and an isotope mass spectrometer; the temperature control circulating system comprises a water bath circulating pump and a water bath tank; and the data acquisition and control system comprises an online computer, a programmable logic controller (PLC) unit and a flow meter. According to the device, online continuous monitoring of isotope composition in the natural gas hydrate phase change process is achieved, dynamic collection of parameters such as temperature and pressure is combined, and the precision and continuity of experimental monitoring are improved.

The invention discloses a flexible self-suction detection device and method for a fuselage pressure sensor, belongs to the technical field of air tightness testing of aircrafts, and solves the problems that an existing air tightness testing mode is tedious in operation and low in detection efficiency. The flexible self-suction detection device for the fuselage pressure sensor comprises a cross beam, wherein at least one hand pump suction cup and a plurality of suction cup assemblies are mounted at the bottom of the cross beam; the multiple suction cup assemblies are communicated through air pipes. And the air pipe is connected with an atmosphere data tester. During use, the hand pump suction cup is adsorbed on the fuselage skin, each suction cup assembly corresponds to the pressure hole in the surface of each skin, the air pressure holes can be subjected to air detection testing at the same time by connecting the air data tester with the air pipe, the testing efficiency is improved, and the working intensity is reduced; a height difference exists between the sucker body and the hand pump sucker assembly, the spring is compressed after the hand pump sucker adsorbs, counter-acting force is applied to the sucker body, the sucker body is pressed on a machine body, and therefore the pressure hole is sealed.

The invention relates to the technical field of blasting, and discloses an explosive injection device for static blasting, which comprises an explosive injection mechanism, a cleaning mechanism is arranged at the bottom of the explosive injection mechanism, and the outer side of the cleaning mechanism is fixedly connected with the explosive injection mechanism; the medicine injection mechanism comprises a main shell, a medicine storage tank is arranged in the main shell, a cover is arranged on the top of the medicine storage tank, a manual pump is installed on the outer side of the main shell, a handle is installed on the outer side of the manual pump, and a piston rod is fixedly connected to the top of the manual pump. An output port of the piston rod is fixedly connected with the interior of the medicine storage tank, a piston is arranged in the medicine storage tank, the piston rod is fixedly connected with the piston, a medicine conveying pipe is fixedly connected to the bottom of the medicine storage tank, and a handle is fixedly connected to the outer side of the main shell. According to the explosive injection device for static blasting, the operation process is simplified, the explosive waste is reduced, the engineering cost is reduced, the explosive injection efficiency is improved, and the application range is expanded due to the small and portable design of the explosive injection device.

The application relates to a fan maintenance technical field, in particular to a fan transmission system fault feature extraction equipment, which comprises a machine body, a winding mechanism is arranged outside the socket, a feature extraction mechanism is arranged inside the winding mechanism, a position adjusting mechanism is arranged at the bottom of the machine body, the position adjusting mechanism comprises a mounting plate, two hand pump type suction cups are mounted on the mounting plate, an adjusting piece is arranged at the top of the mounting plate, and a limiting piece is arranged on one side of the adjusting piece. Through the cooperation of the mounting plate, the hand pump type suction cup, the rotating disc and the first rotating shaft, when the equipment is placed, the hand pump type suction cup is adsorbed on the plane position, the machine body is supported, the machine body is rotated, the rotating disc is driven to rotate, the operating panel of the machine body is aligned with the position of the eyes of the worker, the first rotating shaft and the fixing block are rotated, the machine body is driven to rotate, the position of the operating panel of the machine body is further adjusted, the machine body is flexibly placed, and the worker can conveniently observe the data displayed on the operating panel of the machine body.

The utility model relates to a hydraulic trolley for transferring a coil, which comprises a trolley body provided with walking wheels, a hydraulic cylinder arranged on the trolley body and a supporting table arranged on an extending shaft of the hydraulic cylinder and used for supporting the coil, the trolley body is further connected with a crank arm inclining towards the side face of the trolley, and the crank arm is provided with a manual pump connected with the hydraulic cylinder. When the coil transfer trolley is used, the trolley body is moved to the position below a coil, then the manual pump is driven to drive the hydraulic cylinder to stretch out, the coil is supported by the supporting table, then the trolley is pulled to drive the coil to be transferred, an operator is located on the side face of the coil through the crank arm, and therefore the operator can conveniently observe the rising condition of the supporting table; and meanwhile, a worker presses a manual pump to drive a hydraulic cylinder to stretch out, so that ascending of the supporting table can be manually controlled, and the ascending stability of the supporting table is enhanced.

The invention relates to a concept for raising the groundwater level from any depth with little electrical energy or potential energy of water. The device comprises two vertical pipelines forming a closed circulation path. And water filled in the two pipelines is in a balanced state. The bottom self-lubricating piston is connected through a smoothly ground piston connecting pipe, and due to the existence of the floater, the bottom self-lubricating piston can easily move up and down in water. Meanwhile, underground water enters through the bottom check valve and flows out through the upper check valve. By means of the model design, even children can easily rotate the hand pump to lift water from any depth. The solar panel is used for operating the direct current motor. The model cost is reduced and the efficiency is improved. In the invention, only little energy is needed, and the device can be used as a hand pump well. The water can circulate and drive the turbine to generate electricity.

The present invention relates to the technical field of pump oil control, and discloses a manual and automatic integrated pump oil control system and method, including: a low oil level alarm module for the storage oil level monitors the oil level in the storage tank in real time, and when it is higher than a preset low oil level, the user selects a manual pump oil mode or an automatic pump oil mode through a manual and automatic pump oil selection module; in the manual pump oil mode, a high oil level alarm module for the fuel oil level monitors the oil level in the fuel tank in real time, and when the oil level is lower than a preset high oil level, it pumps oil according to the user's demand through a manual pump oil module; in the automatic pump oil mode, a fuel supply pump start-stop module monitors the oil level in the fuel tank in real time, and when it is lower than the fuel supply pump start point, it turns on the fuel supply pump, and the automatic pump oil module pumps oil automatically until the oil level is higher than the fuel supply pump stop point and then closes the fuel supply pump to stop pumping oil. The present invention can realize the pump oil function of manual and automatic integration while avoiding the burning of the fuel supply pump and the overflow of the fuel tank, is easy to operate, and has high safety.

The utility model discloses a pressing type multifunctional fixing device which comprises a left adjusting frame and a right adjusting frame, and the angle between the left adjusting frame and the right adjusting frame can be conveniently changed according to the installation angle through the mode that the left adjusting frame and the right adjusting frame are hinged. Meanwhile, the angle between the left adjusting frame and the right adjusting frame can be fixed by screwing a bolt, a lead screw can be conveniently screwed through a lead screw button cap, the position of a hand pump vacuum suction cup can be changed through the lead screw in cooperation with a second sliding block, tiles are adsorbed through the hand pump vacuum suction cup, and the tiles can be propped through a supporting device; and the levelness of the ceramic tile can be observed in an auxiliary mode through the leveling instrument, the position of the threaded supporting column can be changed through the first sliding block which is arranged in a sliding mode, and meanwhile the threaded supporting column can support the threaded supporting column.

The utility model discloses a medical tube air bag inflating and water filling device, and relates to the field of hospital supplies. Comprising a shell, a water storage bottle, a manual pump, a first three-way valve, a second three-way valve, a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline and a connector. During inflation, the first three-way valve is adjusted to communicate the second pipeline with the fifth pipeline, and the second three-way valve is adjusted to control the fifth pipeline to communicate with the fourth pipeline; then the hand-held handle operates the manual pump, and air enters the manual pump through the second pipeline, the first three-way valve, the fifth pipeline, the second three-way valve and the fourth pipeline; then the connector is connected with an inflation connector on the medical tube, and the second three-way valve is operated to enable the third pipeline to be communicated with the fourth pipeline; and then the manual pump is operated, and air is output through the fourth pipeline, the second three-way valve, the third pipeline and the connector and is inflated into the air bag. In water filling, the first three-way valve is adjusted to enable the first pipeline to be communicated with the fifth pipeline, and other operations are the same as water filling.

The invention provides a pipeline refueling vehicle. The pipeline refueling vehicle comprises a chassis, a refueling platform, a first hydraulic cylinder, a hand pump and a first pipeline. Wherein the first hydraulic cylinder is arranged on the chassis, connected with the refueling platform and used for lifting the refueling platform; the first pipeline is connected with the first hydraulic cylinder and the hand pump, and the hand pump pumps hydraulic liquid into the first hydraulic cylinder through the first pipeline. By operating the hand pump, hydraulic liquid can be pumped into the first hydraulic cylinder, and the refueling platform is lifted through the first hydraulic cylinder. The hand pump pumps liquid into the first hydraulic cylinder in a mechanical transmission mode and does not depend on a motor, in the process that the refueling platform is used for refueling an airplane, if the pipeline refueling vehicle abnormally flames out and cannot be started, the refueling platform can be rapidly and reliably lifted through the arrangement, and the safety of the refueling platform is improved. The pipeline refueling truck can be rapidly evacuated from the site, the emergency processing capacity of the pipeline refueling truck on the aircraft refueling operation site is improved, and the pipeline refueling truck is convenient to use.