32results about How to "Realize function conversion" patented technology

The present invention is one multifunctional electric hammer with the functions of percussion, percussion drilling, drilling, etc. and aims at facilitates the operation of multifunctional electric hammer. The improved multifunctional electric hammer includes front end parts and back end parts. The front end parts include front casing, pedestal, driving shaft assembly, percussion shaft assembly, sliding gear assembly, sliding board, spring, eccentric pin, cam and knob. The sliding gear assembly consists of sliding shaft, sliding gear and sliding clutch. The sliding shaft coaxial with the driving shaft has one end stretched into the axial hole on one end one the driving shaft and the other end supported on the front end casing; and the driving shaft is fixed axially onto the pedestal. The present invention realizes the function conversion with only knob, and has high reliability and installation and use convenience.

The invention belongs to the electric tool technology field, and relates to a double-speed multi-purpose electric hammer. The invention comprises front end and rear end parts; the front end part comprises a front end casing body, a bottom seat, a transmission shaft component, an impact axle component, a sliding pinion gear component, a low-speed bull gear, a high-speed bull gear, a bull gear return spring, inner and outer knobs, a low-speed sliding plate, a high-speed sliding plate, a sliding plate spring, and a rotation stopping plate. The invention adopts one knob to realize the conversion of five function of the electric hammer, the single hammer, the neutral gear, the hammer drill, the low-speed drill and the high-speed drill, and the function is reliable, and the installation and the use are convenient. The invention solves the problem that the efficiency is not high when the existing electric hammer is used for drilling small holes on steel or timber.

The invention provides a magnetic fluid micro-channel thermal control system of a microsatellite standalone, relates to a micro-channel-based thermal control system applied to a microsatellite, and solves the problems that existing microsatellite thermal control systems are poor in temperature control performance and poor in standalone active cooling and cannot realize effective thermal utilization in the microsatellite. The magnetic fluid micro-channel thermal control system of the microsatellite standalone comprises an electromagnetic pump, magnetic fluid pipelines, a hot-end magnetic fluid micro-channel and a cold-end magnetic fluid micro-channel. The outlet of the electromagnetic pump is communicated with the inlet of the hot-end magnetic fluid micro-channel through the magnetic fluid pipeline. The inlet of the electromagnetic pump is communicated with the outlet of the cold-end magnetic fluid micro-channel through the magnetic fluid pipeline. The outlet of the hot-end magnetic fluid micro-channel is communicated with the inlet of the cold-end magnetic fluid micro-channel through the magnetic fluid pipeline. The magnetic fluid micro-channel thermal control system of the microsatellite standalone is used for spacecrafts.

The invention discloses a direction control valve used for being connected with three or more single pipes or pipelines intersecting with pipes or pipelines. The direction control valve comprises a shell. The shell is provided with a spherical inner cavity. The shell is provided with at least two pipelines communicating with the spherical inner cavity. A spherical valve element is arranged in the spherical inner cavity. A control column extending out of the surface of the shell is arranged on the outer surface of the spherical valve element. A through hole is formed in the spherical valve element, the through hole in the spherical valve element is controlled by the control column to be connected or disconnected with at least two pipelines, and one or more inflow or outflow on-off pipelines are formed. The pipeline A or the pipeline C is selected to be used through a control rod, and the efficiency of a treatment device is improved.

The invention relates to a bunk bed with a multifunctional table. The bunk bed comprises a bed frame, one side of the bed frame is slidably connected with a positioning assembly, wherein the positioning assembly is connected with a table, the table is rotatably connected with the positioning assembly through a sleeving assembly, a movable table plate is arranged in a shell of the table, a cushionis fixed to the other face of the table plate, the table plate is rotatably connected with a movable block in the center of a wall at the opposite side of the shell, the movable block is telescopically connected with the shell, and one side of the shell is slidably connected with a baffle perpendicular to the table plate. The table can be stored and folded and can also be used as a space integrating study, work and rest.

Disclosed is an electromagnetic magnet with manual control and state detecting functions. A coil frame is mounted in a cover shell; the coil frame is wound by a coil; a "T"-shaped iron core is assembled at the upper end of the cover shell while a "T"-shaped cover plate is assembled at the lower end of the cover shell; the lower end of the "T"-shaped iron core extends into the coil frame; a base is fixed at the top end; a through hole with a conical opening in the lower end is formed in the center of the "T"-shaped iron core; a static spring sheet, a movable spring sheet and a state detection spring sheet are riveted on the base; an inverted "T"-shaped dustproof cover is assembled on the base; an armature is inserted in the coil frame; the upper part of the armature adopts a conical rod shape, and the conical shape part is adapted with the conical opening while the rod-shaped part is inserted in the through hole and passes through the base to extend to the upward side of the base; a reset spring is assembled on the rod-shaped lower part while a threaded rod is fixed on the upper part; the threaded rod is equipped with a butterfly nut; the lower end of the armature is adapted in a slot hole of the cover plate; a socket is mounted on the inverted "T"-shaped dustproof cover; and the socket is electrically connected with the state detection spring sheet and the coil separately. The electromagnetic magnet has the state detection function and reliability in long-term electrified operation; and meanwhile, the electromagnetic magnet can be manually controlled in power outage to realize function switching.

The invention provides a rotating speed testing device and a rotating speed testing method for a DC motor, and a testing system for an air conditioner, wherein the rotating speed testing device of the DC motor comprises the components of a first port set which is connected with a to-be-tested DC motor and comprises a motor operation signal feedback end; a second port set which is connected with the control circuit board of the DC motor, wherein each port in the second port set is correspondingly connected with a corresponding port in the second port set; a processing module which is used for calculating the actual rotating speed of the DC motor according to a signal that is fed back by the operating signal feedback end of the motor; a setting module which is used for setting the target rotating speed of the DC motor; and a display module which is used for displaying the actual rotating speed and / or the target rotating speed of the DC motor. The rotating speed testing device and the rotating speed testing method for the DC motor and the testing system for the air conditioner have advantages of improving testing efficiency for the DC motor, furthermore reducing manpower cost in testing of the DC motor, and realizing multi-aspect testing on the DC motor.

The invention discloses a disposable lumbar cistern drainage and multidirectional shunting device, comprising a four-way shunt device. The four-way shunt device comprises a three-way valve and an adjusting knob. The disposable lumbar cistern drainage and multidirectional shunting device is characterized in that the four-way shunt device is connected with a sample collection channel, an intrathecal injection channel, a cerebrospinal fluid collection channel and a fluid incoming channel; the intrathecal injection channel is provided with a seal rubber gasket fluid inlet; the fluid incoming channel is connected with a lumbar cistern drainage channel; the tail end of the sample collection channel is provided with a positive pressure valve; a spring is compressed on the positive pressure valve; a one-way valve is compressed to the other end of the spring through a one-way valve support cross-beam; the cerebrospinal fluid collection channel is connected with a cerebrospinal fluid collector. The disposable lumbar cistern drainage and multidirectional shunting device is capable of isolating germs, avoiding iatrogenic contaminations and preventing cerebrospinal fluid sample contamination, thereby improving accuracy of sample inspection; is convenient to operate; and has the functions of cerebrospinal fluid collecting, cerebrospinal fluid sampling and intrathecal injection.

The invention relates to a lost foam digital forming machine comprising a multi-shaft movement system, a workbench (10), a needling type fixing platform (20), a milling and cutting system (30), the multi-shaft movement system comprises an X-shaft movement system (40), a Y-shaft movement system (50), a Z-shaft movement system (60), a C-shaft movement system (71) and an A-shaft movement system (72), the workbench (10) is located below the multi-shaft movement system, the needling type fixing platform (20) is fixed on the workbench (10) through a magnetic clamp and fixes a workblank through a circular needle array (22), the milling and cutting system (30) is installed on the C-shaft movement system (71), and the lost foam milling and rapid cutting functions are achieved through horizontal movement and rotation of the multi-shaft movement system. The lost foam digital forming machine has the advantages of improving the forming precision, shortening the manufacturing cycle, lowering the manufacturing cost and achieving milling and rapid cutting of high-quality lost foam samples.

The invention belongs to the technical field of electric tools and relates to a double-speed multifunctional electric hammer. It includes front-end and rear-end components; front-end components include front-end housing, base, transmission shaft assembly, impact shaft assembly, sliding pinion assembly, low-speed large gear, high-speed large gear, large gear return spring, inner and outer knobs, and low-speed slide plate , High-speed skateboards, skateboard springs, anti-rotation plates, etc. The invention realizes the conversion of five functions of the electric hammer, such as single hammer, neutral gear, hammer drill, low-speed drill, and high-speed drill, with one knob, and has reliable function and convenient installation and use. The method solves the problem that the efficiency of the existing electric hammer is not high when drilling small holes on steel and wood.

The invention discloses a bicycle integrating three functions of a camping tent, a sun umbrella and a cargo rack. The bicycle comprises a folding type sun umbrella support device, a movable buckle type retainer device and a folding support frame, wherein the folding type sun umbrella support device is fixed on a bicycle frame cross beam through a pin; the movable buckle type retainer device is connected with a bicycle frame vertical beam through a pin; when the folding support frame is used as a sun umbrella, the folding support frame is connected with the bicycle frame cross beam, the bicycle frame vertical beam and a back shaft through the folding type sun umbrella support device, the movable buckle type retainer device and a butterfly-shaped screw nut; a shielding cloth is positioned above a saddle; when the folding support frame is used as a cargo frame, the folding support frame is connected with the bicycle frame vertical beam and the back shaft through the movable buckle type retainer device and the butterfly-shaped screw nut, and is positioned above a back bicycle wheel; when the folding support frame is used as a camping tent, the shielding cloth is supported above the folding support frame. The bicycle has the advantages that multiple purposes of one material are realized; the traveling equipment is simplified; the conversion of all functions is simple and convenient.

The invention discloses a railway box girder transverse moving and falling device and a dismantling construction method. The method comprises the following steps of installing a steel pipe pile set, installing a hoop device, installing a slideway beam, installing a limiting device, jacking a box girder, arranging an inner sliding block and an outer sliding block, transversely moving the box girder, installing a falling support and dismantling redundant assemblies of the transverse moving support, excavating a groove and falling the box girder. According to the railway box girder transverse moving and falling device and the dismantling construction method, the box girder can be dismantled while the bridge piers are reserved, the bridge site and the bridge site outer support can be constructed at the same time, and after the box girder transversely moves out of the bridge site, follow-up replacement work can be conducted.

The invention discloses an intermittent control water inlet valve, which comprises a water inlet pressure difference valve, an intermittent lever, a water inlet pressure relief hole, a water inlet block, a water outlet pipe of the water inlet valve, a textured water outlet, a switching valve plate, an inlet Water valve full-pressure spout, auxiliary flushing outlet, auxiliary flushing differential valve, time-controlled water bucket, time-delayed water bucket, constant force float, tap water inlet pipe, etc. When the water level in the toilet tank drops to a certain depth, the auxiliary flushing valve The constant force bucket controlled by the time-delay adjustment hole falls to make the piston go up, and the tap water inlet pipe has only one outlet for flushing, and the full pressure realizes the replacement of toilet dirt; when the timing is controlled, the outlet for flushing is controlled by the auxiliary flushing outlet to complete the replacement After the task, add water to the water tank of the toilet through the textured water outlet; when the water tank of the toilet is filled with water, plug the force point to press down the intermittent lever, block the water inlet and pressure relief hole, and realize the tap water well. The full pressure of the water inlet pipe controls the washing and replacement of the toilet respectively, which improves the use function of the toilet as much as possible.

The invention discloses a conductive pressure-sensitive adhesive which can be used as insulating glue for secondary use. Raw materials of the adhesive comprise a coupling agent, conductive composite particles, butyl acetate, a polyacrylate emulsion, an antifoaming agent, a preservative, a leveling agent, p-toluenesulfonic acid and glycidyl methacrylate, and a preparation method of the adhesive comprises the steps: (1) adding the coupling agent and the conductive composite particles to a butyl acetate solution, then adding the polyacrylate emulsion, and performing ultrasonic vibration so as toobtain a uniform emulsion; and (2) adding the antifoaming agent, the preservative and the leveling agent to the uniform emulsion, then adding p-toluenesulfonic acid and glycidyl methacrylate, and performing mixing and stirring so as to obtain the adhesive. The conductive pressure-sensitive adhesive has good adhesion and electrical conductivity, and can be widely applied to circuit boards; not onlycan electronic components be bonded, but also a conduction effect can be achieved, and since the conductive pressure-sensitive adhesive has good insulation properties after the electrical conductivity is lost, the adhesive can be used as insulating glue for secondary use; and the adhesive has a good prospect of market application.

The invention provides a modularized heat pump unit, comprising a compressor, an electronic expansion valve and at least two modules which are parallelly connected between the link-loops of the compressor and the electronic expansion valve; each module comprises a first three-way valve, a second three-way valve, a first electromagnetic valve, a second electromagnetic valve and a heat exchanger, the three ports of the first three-way valve are respectively connected with one end of the first electromagnetic valve, the second electromagnetic valve and the heat exchanger, and the three ports of the second three-way valve are respectively connected with the other end of the first electromagnetic valve, the second electromagnetic valve and the heat exchanger; the two ends of the first electromagnetic valve and the second electromagnetic valve are respectively connected between the link-loops of the compressor and the electronic expansion valve. With the invention adopted, each heat exchanger in each module can be a condenser or an evaporator, and the exchanger can be changed from a refrigerating / heating working condition into a heating / refrigerating working condition without changing the refrigerating or heating operation working conditions of other exchangers, thus improving the comprehensive refrigerating efficiency of the system, saving energy and satisfying the requirements of different customers.

The invention discloses a convenient storage box with convertible storage and hanging manners. The convenient storage box comprises a main box body, a first drawer body and second drawer bodies; and one first drawer body and two second drawer bodies are arranged in the main box body. The convenient storage box is suitable for storage of cosmetics and jewelries, the functions of a dressing table and a jewel case are combined emphatically during structural design, and through simple folding and unfolding, the convenient storage box is flexible and variable in structure and can be used for storing articles, can be used as the small dressing table for storage or can be used as a suspension type storage box, so that a package can be reused and is not discarded, the sustainable green design concept is integrated, a paperboard recycling path is widened, function conversion of waste paperboard materials is achieved, the service life of the package can be effectively prolonged, the consumers can participate in activities independently, and interestingness, practicability and low cost are achieved.

The invention relates to a conversion type function relay. The conversion type function relay comprises an input end, an output end, a light-emitting diode, a photosensitive diode array, a depletion type MOS tube M1 and an enhanced type MOS tube M2; the input end comprises a positive input pin and a negative input pin; the output end comprises a public pin, a normal-close pin and a normal-open pin; the anode of the light-emitting diode is connected with the positive input pin, and the cathode is connected with the negative input pin; the photosensitive diode array closes to the light-emittingdiode; the anode of the photosensitive diode array is connected with the grid of the depletion type MOS tube M1, and the drain of the depletion type MOS tube M1 is connected with the normal-close pin,and the source is connected with the public pin; the grid of the enhanced type MOS tube M2 is connected with the cathode of the photosensitive diode array, the drain of the enhanced type MOS tube M2is connected with the normal-open pin, and the source is connected with the public pin. In comparison with the way of realizing switching by using the mechanical action, the non-contact switching of the mechanical action is realized in the switching of the relay, the switching frequency is faster, and the service life is longer.

A parallel modular heat pump unit, including a first dry pipe, a second dry pipe, a third dry pipe, and a compressor connected to the second dry pipe and the third dry pipe at both ends; At least two identical modules are connected in parallel on the second main pipe and the third main pipe, and the modules include the first heat exchanger, the first one-way valve, the first electronic expansion valve, the first four-way valve and the first three-way valve ; The first one-way valve is connected in parallel with the first electronic expansion valve, and the three ports of the first three-way valve are respectively connected to one end of the first four-way valve, the second dry pipe and the third dry pipe; the first four-way The four ports of the valve are respectively connected to the first dry pipe, one end of the first heat exchanger, one end of the first three-way valve, and a parallel end of the first one-way valve and the first electronic expansion valve; the first heat exchange The other end of the device is connected to the other parallel end of the first one-way valve and the first electronic expansion valve. The invention can supply cooling and heating at the same time, the whole system is flexible and multi-purpose, improves the comprehensive COP, and saves energy.

The invention discloses a magnetorheological clutch with the small size and the large controllable range. The magnetorheological clutch comprises a shell body, a driving mechanism and a driven mechanism; the driving mechanism comprises an input shaft, an input disc and a permanent magnet, and the permanent magnet is arranged between the input disc and the input shaft; the driven mechanism comprises an output shaft, an output disc and a connecting cylinder; the output disc comprises two or more output disc bodies, the output disc body at the bottommost end is fixedly mounted on the output shaftin a sleeving mode, the outer edges of all the output disc bodies are connected into a whole through the connecting cylinder, and an airtight annular liquid storage cavity is formed between the output disc body at the topmost end and the output disc body at the bottommost end; the annular liquid storage cavity is filled with magnetorheological liquid; an annular storage cavity is formed between the every two adjacent output disc bodies, and each output disc body is located in the corresponding annular storage cavity; and an inner liquid storage cavity is formed in the input disc, a magnet exciting coil is further arranged in the shell body, and the magnet exciting coil surrounds outside the connecting cylinder. The magnetorheological clutch has the advantage that the purpose that passivetorque is small enough during no current excitation is achieved.

The invention discloses a bicycle integrating three functions of a camping tent, a sun umbrella and a cargo rack. The bicycle comprises a folding type sun umbrella support device, a movable buckle type retainer device and a folding support frame, wherein the folding type sun umbrella support device is fixed on a bicycle frame cross beam through a pin; the movable buckle type retainer device is connected with a bicycle frame vertical beam through a pin; when the folding support frame is used as a sun umbrella, the folding support frame is connected with the bicycle frame cross beam, the bicycle frame vertical beam and a back shaft through the folding type sun umbrella support device, the movable buckle type retainer device and a butterfly-shaped screw nut; a shielding cloth is positioned above a saddle; when the folding support frame is used as a cargo frame, the folding support frame is connected with the bicycle frame vertical beam and the back shaft through the movable buckle type retainer device and the butterfly-shaped screw nut, and is positioned above a back bicycle wheel; when the folding support frame is used as a camping tent, the shielding cloth is supported above the folding support frame. The bicycle has the advantages that multiple purposes of one material are realized; the traveling equipment is simplified; the conversion of all functions is simple and convenient.

The invention discloses a conductive pressure-sensitive adhesive that can be used as an insulating adhesive for secondary use. The raw materials are as follows: coupling agent, conductive composite particles, butyl acetate, polyacrylate emulsion, defoamer, antiseptic, and leveling agent , p-toluenesulfonic acid, and glycidyl methacrylate, the method is as follows: 1) Add coupling agent and conductive composite particles to butyl acetate solution, then add polyacrylate emulsion, and obtain a uniform emulsion through ultrasonic oscillation; 2 ) Add defoamer, preservative and leveling agent into uniform emulsion, then add p-toluenesulfonic acid and glycidyl methacrylate, mix and stir to prepare. The conductive pressure-sensitive adhesive has good adhesion and conductivity, and can be widely used in circuit boards. It can not only bond electronic components but also play a conductive role, and the conductive pressure-sensitive adhesive loses its conductivity. It has good insulation, can be used as insulating glue for secondary use, and has a good market application prospect.

The invention relates to a bunk bed with a multifunctional table, comprising a bed frame, one side of the bed frame is slidably connected to a positioning assembly, the positioning assembly is connected to a table, the table and the positioning assembly are rotatably connected through a sleeve assembly, and the table There is a movable table board in the housing, and the other side of the table board is fixed with a cushion. The table board is connected with the movable block in the center of a pair of side walls of the housing. The movable block is telescopically connected with the housing. One side of the housing is slidingly connected with Baffles perpendicular to the surface of the table top. The table can be stored and folded and can be used as a space for studying, working and resting.

The invention discloses a buckle type transmission grinding machine for a stone floor. The transmission grinding machine comprises a machine frame, a motor, a transmission part, a grinding disc, travelling wheels, a handle and an electric box, wherein the machine frame is in a 4 shape, the transmission part is arranged at one end of the machine frame, the motor is arranged at the top of the transmission part, and the grinding disc is arranged at the bottom of the transmission part; the travelling wheels are arranged at the bottom of the machine frame, the handle is arranged at the top of the machine frame, the electric box is fixedly arranged on the handle, and the electric box is connected with the motor; a working method of the buckle type transmission grinding machine is further disclosed; and on one hand, a simple and stable 4-shaped structure is adopted, the equipment weight is reduced, the labor intensity of workers is reduced, the construction speed is increased, and on the other hand, a modular structure is adopted, the fixing structure is simplified, and the dismounting and mounting speed is increased.

A multi-functional modularization heat pump machine set comprises a compressor, an electronic expansion valve, four main pipes which are a first main pipe, a second main pipe, a third main pipe, a fourth main pipe, and at least two same modules which are connected with the compressor and the electronic expansion valve in parallel and arranged on the four main pipes, wherein the modules comprises a first heat exchanger, a first three-port valve and a second three-port valve, wherein three ports in the first three-port valve are respectively connected with one end of the first heat exchanger, the first main pipe and the second main pipe; the three ports in the second three-port valve are respectively connected with one end of the first heat exchanger, the third main valve and the four main valve. The machine set can simultaneously supply cold and heat, causes that each heat exchanger can be both a condenser and an evaporator; namely, the heat exchanger becomes the heat-producing or cold-producing operation condition from the cold-producing or heat-producing operation condition without changing the cold-producing or heat-producing operation condition of other heat exchangers.

The invention discloses a chair with a sliding plate function and solves the problem that a backrest type chair for a child to sit has a single function. The chair is characterized in that a chair back and a chair body are hinged, chair legs and the chair body are hinged, and the chair back and the chair legs can rotate relative to the chair body; when the chair back and the chair body are in included angle connection and the chair legs and the chair body are in included angle connection, a chair structure is formed, and a chair function is achieved; when the chair back and the chair body arearranged in the same plane and the chair legs rotate to be parallel to the chair body, idler wheels which are connected to the chair legs through idler wheel shafts can contact the ground, a sliding plate structure is formed, and the sliding plate function is achieved.

The invention provides a magnetic fluid micro-channel thermal control system of a microsatellite standalone, relates to a micro-channel-based thermal control system applied to a microsatellite, and solves the problems that existing microsatellite thermal control systems are poor in temperature control performance and poor in standalone active cooling and cannot realize effective thermal utilization in the microsatellite. The magnetic fluid micro-channel thermal control system of the microsatellite standalone comprises an electromagnetic pump, magnetic fluid pipelines, a hot-end magnetic fluid micro-channel and a cold-end magnetic fluid micro-channel. The outlet of the electromagnetic pump is communicated with the inlet of the hot-end magnetic fluid micro-channel through the magnetic fluid pipeline. The inlet of the electromagnetic pump is communicated with the outlet of the cold-end magnetic fluid micro-channel through the magnetic fluid pipeline. The outlet of the hot-end magnetic fluid micro-channel is communicated with the inlet of the cold-end magnetic fluid micro-channel through the magnetic fluid pipeline. The magnetic fluid micro-channel thermal control system of the microsatellite standalone is used for spacecrafts.

The invention provides a modularized heat pump unit, comprising a compressor, an electronic expansion valve and at least two modules which are parallelly connected between the link-loops of the compressor and the electronic expansion valve; each module comprises a first three-way valve, a second three-way valve, a first electromagnetic valve, a second electromagnetic valve and a heat exchanger, the three ports of the first three-way valve are respectively connected with one end of the first electromagnetic valve, the second electromagnetic valve and the heat exchanger, and the three ports of the second three-way valve are respectively connected with the other end of the first electromagnetic valve, the second electromagnetic valve and the heat exchanger; the two ends of the first electromagnetic valve and the second electromagnetic valve are respectively connected between the link-loops of the compressor and the electronic expansion valve. With the invention adopted, each heat exchanger in each module can be a condenser or an evaporator, and the exchanger can be changed from a refrigerating / heating working condition into a heating / refrigerating working condition without changing the refrigerating or heating operation working conditions of other exchangers, thus improving the comprehensive refrigerating efficiency of the system, saving energy and satisfying the requirements of different customers.

The invention discloses a multifunctional mountain transport truck which comprises a truck frame, a scissors forklift and a truck bed. The two ends of the scissors forklift are connected with the truck frame and the truck bed respectively. The scissors forklift comprises a frame body, guiding grooves, rollers, a pulling rod and a switching control mechanism controlling the truck bed to ascend or conduct self-discharging. The bottom of the frame body is connected into the guiding groove through the rollers. The guiding grooves are connected to the truck frame. The switching control mechanism is arranged on openings formed in one ends of the guiding grooves. The switching control mechanism comprises a switching clamping plate and an extending plate. The switching clamping plate and the extending plate vertically correspond to each other to form a roller groove. The roller groove is communicated with the guiding grooves. The pulling rod is connected with the switching clamping plate. According to the multifunctional mountain transport truck, the truck bed can be switched between ascending or descending and self-discharging and controlled to be incapable of conducting self-discharging in the ascending state, so that safe operation is achieved, and a safety accident caused by an operational error is avoided. The multifunctional mountain transport truck has the advantages of being flexible in working, safe, reliable, and high in working efficiency and performance cost ratio.