33results about How to "Increase rotational power" patented technology

A screw compressor comprising: a low pressure stage compressor body; a high pressure stage compressor body that further compresses a compressed air compressed by the low pressure stage compressor body; pinion gears for example, respectively, provided on, for example, a male rotor of the low pressure stage compressor body and, for example, a male rotor of the high pressure stage compressor body; a motor; a bull gear for example, provided on a rotating shaft of the motor; and an intermediate shaft supported rotatably and provided with a pinion gear, which meshes with the bull gear, and a bull gear, which meshes with the pinion gears. Thereby, it is possible to make the motor relatively low in rotating speed while inhibiting the gears from being increased in diameter, thus enabling achieving reduction in cost.

The invention relates to a road wind generator, which belongs to the field of wind driven generators. The road wind generator has three mounting position modes on railways, express highways, subway tunnels and the like for land transport devices, and the three mounting position modes include the lateral surface on one side of a driveway, the lateral surface in the middle of opposite running driveways, and the top part in the middle of the opposite running driveways; a wind axle vertical to an opposite surface in a driving direction is arranged on the road wind generator and is connected with afan blade, and a one-way bearing is connected with a top cover and a bottom cover; a valve is connected with an air deflector through a door spindle, and the air deflector is connected with the top cover and the bottom cover; a gear is connected with the wind axle and is in meshed connection with a speed changer, and the speed changer is in meshed connection with a generator rotor shaft; and a supporting rod is connected with and fixes a machine body. The road wind generator uses the wind energy generated by the land transport devices of trains, automobiles, subway locomotives and the like inmoving, changes the wind energy into electric energy to change the waste into valuable, and can use natural wind energy to generate electricity so that the road wind generator accords with a nationalpolicy for environmental protection, energy-saving and emission reduction; besides, the road wind generators can be continuously arranged along the driveway direction to form generating sets for providing electric power for stations, towns and countries and parallel power supply on the way and providing electric power for electric locomotives and motor train units.

This invention relates to a rotary flame heater, comprising a burner, a first wind wheel, a second wind wheel and a glass tube set in sequence from bottom to top; one side of the burner is set with an ignition device, the first wind wheel and second wind wheel are annular, a plurality of first air inlet passages are aslant set on a side wall of the first wind wheel, a plurality of second air inlet passages are aslant set a side wall of the second wind wheel, the inclined direction of the plurality of first air inlet passages is the same with that of the second air inlet passages. The advantage of this invention is to make full use of the combustion space, increase the contacting area with the glass tube and increase the calorific value when burns the same gas, which achieves a better heating effect.

A uni-directional axial turbine blade assembly comprises a central disc member coupled to an elongated shaft of a motor or generator, a rotational support member mounted on outer circumference of the central disc member, an outer ring mounted on outer circumference of the rotational support member and a plurality of blade members spaced equidistantly, extending radially outward from the outer ring. Each blade member includes a straight leading edge, a curved trailing edge, an exterior surface including a first region having a curved surface, a second region having a flat surface and a convex surface extending from the flat surface and terminating to a radially inward portion and an interior surface including a third region having a concave surface. The preferred embodiment renders the formation of a unique blade configuration that facilitates uni-directional rotation of the blade assembly irrespective of changes in flow direction of fluid.

A hybrid electric propulsion system includes a gas turbine engine having a low speed spool and a high speed spool. The low speed spool includes a low pressure compressor and a low pressure turbine, and the high speed spool includes a high pressure compressor and a high pressure turbine. The hybrid electric propulsion system also includes an energy storage system, an electric motor configured to augment rotational power of the high speed spool, and a controller. The controller is operable to detect a start condition of the gas turbine engine, control power delivery from the energy storage system to the electric motor based on detecting the start condition, and provide a compressor stall margin using a power-assist provided by the electric motor to the high speed spool over a targeted speed range during starting of the gas turbine engine.

The invention relates to a compressed air engine and an application thereof, and is characterized in that pistons of a piston engine are used for compressing air into an air storage tank, and an object is driven to move or generate lift force by counter acting force produced by jet of the compressed air. The piston engine has the structure as follows: an air cylinder is divided into two combustion chambers (4) and (5) as well as two air compression chambers (6) and (7) by the two pistons (1) and (2) which are arranged at interval in a certain distance and fixedly connected with each other in series and a sealing partition wall arranged between the two pistons; the pistons (1) and (2) have reverse stroke movement; and gas pressurization is used for driving the pistons to move, so that the two pistons can complete the whole work circulation process in an alternate way.

The invention relates to a gas pressure storage type wind turbine with an automatic assisting device, which can supply strong high-pressure gas energy for generators, tunnel works, mining and oilfield negative-pressure oil pumping. The large turbine of the existing wind turbine is driven mostly by strong wind so as to directly drive the generator to generating electricity via mechanical speed change and speed regulation. Problems existed includes that the start-up wind speed is high, low wind speed and rated external wind speed result in reactive power so as to obtain large wind power loss, constant speed is hard to realize on a mechanical speed change and regulation device so as to result high manufacturing cost, aloft work and maintenance is difficult with high costs. The automatic assisting device is utilized in the gas pressure storage type wind turbine, thereby the start-up wind speed is lowered more, the gas pressure storage type wind turbine can be used at areas of strong and small winds, and the utilization rate of wind power can be increased to the utmost extent. As the structure is simple, large turbines and mechanical speed regulating devices can be saved, the manufacturing technique can be simplified, the total national production can be realized, the cost can be reduced, one single turbine with tens of megawatts of wind power can be realized, and thereby a novel way for wind power industry can be opened up.

A uni-directional axial turbine blade assembly comprises a central disc member coupled to an elongated shaft of a motor or generator, a rotational support member mounted on outer circumference of the central disc member, an outer ring mounted on outer circumference of the rotational support member and a plurality of blade members spaced equidistantly, extending radially outward from the outer ring. Each blade member includes a straight leading edge, a curved trailing edge, an exterior surface including a first region having a curved surface, a second region having a flat surface and a convex surface extending from the flat surface and terminating to a radially inward portion and an interior surface including a third region having a concave surface. The preferred embodiment renders the formation of a unique blade configuration that facilitates uni-directional rotation of the blade assembly irrespective of changes in flow direction of fluid.

The invention discloses a novel nozzle rotational flow structure and a nozzle structure. The novel nozzle rotational flow structure is characterized in that a spiral baffle plate which is capable of enabling combustible medium to rotationally flow is arranged on the inner wall of a combustible medium passage formed in a nozzle, and the spiral baffle plate is an anti-wear and anti-corrosion spiralstripped plate; the spiral baffle plate stretches towards a direction of a spray head of the nozzle. Compared with a direct flow impact type structure in the prior art, a spiral linear structure of the invention has the advantages that the atomization effect is better, the technological requirements of various coal chemistry industry technologies can be met, and the economic benefit of a coal chemical industry enterprise is effectively increased.

The invention provides an air jet engine using a piston engine as an air compressor and application thereof. The air jet engine is characterized in that: by the motion of a piston in the piston engine, air entering an air cylinder is directly or indirectly compressed, and the compressed air and fuel are mixed and combusted in a combustion chamber and then jetted out from a jet pipe so as to generate a required propelling power. The piston engine and a ram jet are combined to form a ram pressure / piston jet engine. The gas jet pipes are arranged in all directions of an aircraft, so that the aircraft can obtain the abilities of vertical takeoff and landing, hovering and flexible turning. The gas is tangentially jetted by nozzles at the tail ends of aerovanes of the aircraft, so that the aerovanes can obtain higher rotary power and speed.

The invention relates to the technical field of atomizers, and discloses a portable intelligent manufacturing atomizer for anesthesia clinic. The atomizer comprises a shell, a transmission gear is rotationally connected to the middle of an inner cavity of the shell, symmetrical rotating plates are rotationally connected to the upper portion of the inner cavity of the shell, liquid storage bases are fixedly installed on the upper portions of the front ends of the rotating plates, piston ejector rods are connected to the lower portions of the liquid storage bases in a sliding mode, photoresistors are fixedly installed on the upper portions of the piston ejector rods, and light-emitting tubes are fixedly connected to the side walls of inner cavities of the liquid storage bases. According to the portable intelligent manufacturing atomizer for the anesthesia clinic, the activity amount of the piston ejector rods are controlled through voltage changes, electromagnets attract magnetic sleevesto drive the rotating plates to deflect, the component discharging amount in the liquid storage bases is controlled, connecting rod mechanisms are used in cooperation for stirring mixed liquid, therefore, the precision of anesthesia component proportioning is effectively improved, proportioning is more convenient, and the efficacy of anesthesia components is effectively improved.

The invention discloses wet anaerobic fermentation equipment. The wet anaerobic fermentation equipment is structurally provided with a top cover, a tank body, a discharging opening, a meter and a footframe, wherein a stirring plate block is lengthened by centrifugal force of the stirring plate block to increase contact area; vinegar residues flow through a gap between trapezoidal block bodies, sothat the vinegar residues move in a non-stacked state and are in contact with a contact rotary ball; a connection vertical shaft rotates and a pulling belt is used for continuously pulling and loosening a slow flow petal body, so that fermented substances flowing through the gap between the trapezoidal block bodies are vibrated and popped out after being accommodated into a flow splitting branchby a concave petal block, and the fermented substances flow actively; substances in the vinegar residues are sufficiently reacted and decomposed; in a process that an extension plate is extended out under the action of the centrifugal force, resistance in a shuttling process is reduced by a conical head end and the fermented substances flow through a flow splitting body; the fermented substances in a stacked state flow in a branch flow manner and are in contact with a jacking block; and a deformation ring continuously deforms so that the fermented substances flowing through the flow splittingbody flow unstably and are active, and the substances in the vinegar residue fermented substances are actively stirred and sufficiently fermented.

The invention discloses a vibration detection device for mechanical arm manufacturing, and relates to the technical field of mechanical arm manufacturing. The device comprises a base, a driving mechanism, a vibration mechanism, a clamping mechanism, a detection mechanism and a fixing frame, wherein the base comprises a base body, the lower surfaces of a plurality of driving mechanism bodies are welded to the upper surface of the base body, one ends of two driving strips are welded to the side surfaces of two bearing tubes respectively, one ends of a plurality of first vibration strips and oneends of a plurality of second vibration strips are welded to one ends of a plurality of driving pipes respectively, the lower surfaces of two clamping mechanism bodies and the lower surfaces of two clamping oil cylinders are welded to the upper surface of a vibration mechanism body, and one ends of two sliding rails are connected with one ends of two clamping blocks respectively. A sensor is arranged to convert vibration parameters of a mechanical arm into electric signals, the electric signals are amplified through an electronic circuit and then displayed through a reader, the position of a sliding strip on the sliding rails can be adjusted through adjusting bolts according to the dimension and size of the mechanical arm, and the operation is more convenient.

The invention discloses a bottom-supported horizontal axis tidal current energy power generation principle and device achieving automatically sensing of a flow direction, and belongs to the technicalfield of tidal current energy power generation. The device comprises a mounting base, the mounting base of the device is fixed to a sea floor, a horn-shaped diversion hood is fixed to the mounting base and internally provided with a water turbine, the rear end of the water turbine is connected to an engine room, universal couplers are connected with the upper and lower surfaces of the horn-shapeddiversion hood respectively and connected to the mounting base through connecting shafts respectively, and a flow velocity flow direction sensor is also connected between the universal coupler connected with the upper surface of the horn-shaped diversion hood and the corresponding connecting shaft. The device can automatically adapt to the change of the flow direction of tidal current, the utilization rate of the tidal current is high, the horn-shaped diversion hood which has the function of guiding the flow and can increase the flow velocity of the tidal current is arranged, and the device ishigh in reliability, high in work efficiency and great in power generation benefits.

This invention relates to a rotary flame heater, comprising a burner, a first wind wheel, a second wind wheel and a glass tube set in sequence from bottom to top; one side of the burner is set with an ignition device, the first wind wheel and second wind wheel are annular, a plurality of first air inlet passages are aslant set on a side wall of the first wind wheel, a plurality of second air inlet passages are aslant set a side wall of the second wind wheel, the inclined direction of the plurality of first air inlet passages is the same with that of the second air inlet passages. The advantage of this invention is to make full use of the combustion space, increase the contacting area with the glass tube and increase the calorific value when burns the same gas, which achieves a better heating effect.

The invention discloses a hybrid new energy power generation device which comprises a storage box. A first electric lifting rod is installed in the storage box, a lifting plate is installed at the top end of the first electric lifting rod, a supporting column is fixed to the top end of the lifting plate, a first sliding groove is formed in the surface of the supporting column, and a second electric lifting rod is installed at the bottom end of the first sliding groove. The surface of the supporting column is sleeved with a lifting ring, and a first sliding block is fixed to the inner surface of the lifting ring and inserted into the first sliding groove. In weaker wind weather, the lengthening plate extends out of the first mounting groove, the contact area between the wind wheel and wind is increased, and stable power generation is kept; and in the weather of fierce wind, the lengthening plate is shrunk into the first mounting groove, the area of the wind wheel is reduced, the impact force of fierce wind borne by the wind wheel is reduced, and the wind wheel and the supporting column are protected.

The invention discloses a horizontal well diameter-adjustable screw drill dedicated for coal bed gas. The horizontal well diameter-adjustable screw drill can increase the drilling diameter and comprises a liquid inlet joint, a hydraulic motor assembly, a universal shaft assembly and a transmission shaft assembly, a variable-diameter piston assembly is connected to the lower end of the transmission shaft assembly, and the lower end of the variable-diameter piston assembly is connected with a milling shoe through a transition joint; and the variable-diameter piston assembly comprises a T-shaped piston rod, a piston pressing plate, a reset spring and a pressing plate fixing bolt, an oval piston is arranged at the upper end of the T-shaped piston rod, an inclined face is arranged at the lower end of the oval piston, an oval annular inner cavity matched with the oval piston is formed in the lower end of the transmission shaft assembly, the oval piston is limited in the oval annular inner cavity through the piston pressing plate and the pressing plate fixing bolt, a spring installation cavity is formed in the piston pressing plate, and a reset spring is arranged in the spring installation cavity.

The invention relates to a compatible mechanism for pumping liquid and exhausting air. A motor 1 is electrified to rotate so as to drive a motor gear 15 and drive a planetary gear 25 to roll along an outer gear ring 2, drive a planet carrier 24 to rotate, drive a planetary gear 25A to roll along the outer gear ring 2, drive a planet carrier 24A to rotate, and drive an eccentric crank shaft 19 to rotate, so that thrust for a sliding connecting piece 20 is formed through conversion to push, pull and compress a capsule; four working processes of stretching, air inflow (liquid feed), compressing, and air outflow (liquid discharge) are generated; and an air inlet (liquid inlet) or an air outlet (liquid outlet) of each working station is communicated with an inlet or an outlet of a shell 5 through a diversion trench on a diversion trench transition piece 7. According to the invention, a water outlet working station is adjusted through increasing or decreasing sealing capsules 18, or the rotating speed of the eccentric crank shaft 19 is adjusted through adjusting the stage number of a planetary retarding mechanism, so that the compressing speed is adjusted, and the liquid outlet volume (air outlet volume) is adjusted. The compatible mechanism for pumping the liquid and exhausting the air is commonly used in fields of medical treatment, scientific research and the like, and various occasions such as water sampling analysis, a high-grade coffee machine and the like; and the working media can be air and liquid.

The invention relates to a damping regulating mechanism without delay on damping regulation and with excellent reliability. The damping regulating mechanism comprises an inner shaft, the inner shaft is arranged in an axial through hole in a piston rod of a shock absorber, and the bottom of the inner shaft is provided with a sliding ejector pin integrated with the inner shaft; the sliding ejector pin is matched with the axial through hole at the bottom of the piston in a thread manner; the inner shaft is connected with an electric regulating system in a transmission manner; a piston is arranged at the bottom of the piston rod and is provided with a first flowing hole; a second flowing hole is arranged on a thread matching section of the bottom of the piston rod and the sliding ejector pin;and the electric regulating system drives the inner shaft to rotate so as to regulate the position of the sliding ejector pin and regulating the opening degree of the second flowing hole, that is to say, the damping regulation is realized. When working, the shock absorber is closed or opened by the electric regulating system, the damping size of the shock absorber is regulated, and the second flowing hole is closed when the electric regulating system controls the sliding ejector pin moves downwards to a limit position, thus the damping is increased; otherwise, the damping is reduced.

The invention discloses a batching device for spicy sauce production, and relates to the technical field of spicy sauce production. The device comprises a shell, a base, a bearing column, water injection mechanisms, a screening mechanism and a feeding frame, one end of each water injection mechanism body is connected with the side surface in the shell body, one end of a water inlet valve is connected with the side surface of the shell body, the lower surface of a discharging frame is connected with the upper surface of a feeding port, one ends of the first connecting strips and one ends of the second connecting strips are rotationally matched with one ends of the transmission pipes, and the lower surfaces of the second fixing blocks are welded to the upper surface of the screening mechanism body. The screening plate is obliquely arranged, the first connecting strip and the second connecting strip drive the transmission pipe to perform feeding motion, so that the screening plate drives the transmission pipe to vibrate up and down, the connecting springs increase the vibration frequency, and the screening plate performs screening pretreatment on raw materials, so that the prepared sauce is better in quality.

The invention relates to the field of power generation equipment technology, in particular to a vertical air flow power generation system which comprises a generator set, a curved arc-shaped fan blade group, a fixed base, and a hollow upright pole and an upright pole base which are arranged in sequence under the curved arc-shaped fan blade group and are interconnected, wherein the upper part of the curved arc-shaped fan blade group is provided with a top plate, and the lower part of the curved arc-shaped fan blade group is provided with a fixing plate; the curved arc-shaped fan blade group is fixed on the fixing plate; the center of the fixing plate is provided with a rotation shaft; the rotation shaft is connected with the generator set through a bearing located on the center of the fixed base. The vertical air flow power generation system provided by the invention can simultaneously use the convection principle, greenhouse principle, pressure difference principle and wind principle to generate electricity; the electricity transmission and electricity storage control system can be adjusted to supply the electricity or store the electricity; the vertical air flow power generation system has the advantages of simple structure, small fan blade, low noise, good wind-resistant performance, and stable power supply.

A rotating power transformer comprises a primary magnetic core with a primary winding and a secondary magnetic core with a secondary winding. The magnetic cores preferably comprise a ferrite material and are U-shaped, and have a base connecting two legs. The width of the legs is significantly larger than the height of the base, resulting in a better magnetic coupling and a significantly improved tolerance to mechanical deviations.

The invention provides a novel simple and easy cleaning and dredging tool for a water closet. The novel simple and easy cleaning and dredging tool is composed of a cleaning and dredging rod, a cleaning and dredging head and a rotary handle, wherein the cleaning and dredging rod is composed of a first cleaning and dredging rod and a second cleaning and dredging rod; the first cleaning and dredging rod is sleeved with the second cleaning and dredging rod by a buckling device; after the buckling device is released, a sealed end of the first cleaning and dredging rod slides in the second cleaning and dredging rod; one end of the second cleaning and dredging rod is sealed while the other end of the second cleaning and dredging rod is opened. With the cleaning and dredging tool, the water closet can be cleaned and dredged without mechanical power and the cleaning and dredging effect is good.

The invention relates to the technical field of condensers, in particular to a shell for condensing equipment. The shell comprises a condenser, and the two sides of the condenser are connected with protective mechanisms through a connecting mechanism; and each protection mechanism comprises multiple sets of protection shells, top plates are arranged at the tops of the protection shells, first screw rods are arranged on one sides of the tops of the top plates, cooling fans are arranged in the top plates, the top plates are rotationally connected with the protection shells through rotating shafts, connecting rods are arranged on the sides, corresponding to the protection shells, of the top plates, the side view faces of the connecting rods are in an L shape, and the tops of the horizontal sections of the connecting rods make contact with the top plates. According to the shell, the operation is convenient, the protection effect is good, the later maintenance work is convenient, the time for disassembling and assembling the shell is reduced, fixed-point heat dissipation can be realized, the heat dissipation efficiency is improved through feedback and negative feedback, the heat dissipation effect is ensured, resources are saved, the centralized and accurate utilization of the resources is ensured, rapid and efficient heat dissipation is realized, and the heat dissipation effect is greatly improved.

The invention discloses a high-voltage switching sparkproof circuit breaker and belongs to the technical field of circuit breaker equipment. The high-voltage switching sparkproof circuit breaker comprises a circuit breaker body, a protective cover, a box body, a pole and a switching handle. The protective cover covers the circuit breaker, so that the circuit breaker can be isolated from the external environment, dust prevention, wind prevention, heat preservation and drying prevention treatment is achieved, it can be effectively guaranteed that a heat absorption plate can rapidly receive solarradiation energy, the interiors of a first oil storage cavity, a second oil storage cavity and a water storage cavity are heated, and heat preservation treatment on the device is achieved; lifting adjustment of a first sealing gasket and a second sealing gasket can be achieved, intermittent liquid spraying lubrication treatment of the circuit breaker is achieved, the circuit breaker can be effectively prevented from generating electric sparks, normal work of the circuit breaker is guaranteed; the rotating power and stability of first fan blades can be effectively enhanced, and heat generatedby the heat absorption plate is subjected to quintuple diffusion treatment along a groove, and therefore, the heat transfer effect is better, the heat absorption effect is better, and the heat preservation effect can be effectively improved.

The invention provides a simple and easy cleaning and dredging tool for a water closet. The simple and easy cleaning and dredging tool is composed of a cleaning and dredging rod, a cleaning and dredging head and a rotary handle arranged the cleaning and dredging rod in a sleeved manner, wherein the cleaning and dredging head is composed of a plurality of cloth strips; each cloth strip is composed of a cotton cloth layer on the inner wall and a bamboo fiber layer wrapping the cotton cloth layer; one ends of the cloth strips of the cleaning and dredging head are fixedly connected by a connection strip and the other end of the cleaning and dredging head is fixedly connected with a rod head of the cleaning head by a thread; a rotary lug boss clamped in a slide channel of the cleaning and dredging head is arranged at each of the two ends on the rotary handle; a cavity is formed between the inner wall of the rotary handle and the outer wall of the cleaning and dredging rod. With the adoption of the simple and easy cleaning and dredging tool, the water closet can be cleaned and dredged without mechanical power and the cleaning and dredging effect is good.

The invention provides a simple and easy cleaning and dredging tool for a water closet. The simple and easy cleaning and dredging tool is composed of a cleaning and dredging rod, a cleaning and dredging head and a rotary handle arranged the cleaning and dredging rod in a sleeved manner, wherein the cleaning and dredging head is composed of a plurality of cloth strips; each cloth strip is composed of a cotton cloth layer on the inner wall and a bamboo fiber layer wrapping the cotton cloth layer; one ends of the cloth strips of the cleaning and dredging head are fixedly connected by a connection strip and the other end of the cleaning and dredging head is fixedly connected with a rod head of the cleaning head by a thread; a rotary lug boss clamped in a slide channel of the cleaning and dredging head is arranged at each of the two ends on the rotary handle; a cavity is formed between the inner wall of the rotary handle and the outer wall of the cleaning and dredging rod. With the adoption of the simple and easy cleaning and dredging tool, the water closet can be cleaned and dredged without mechanical power and the cleaning and dredging effect is good.

The invention provides an efficient wind-energy salt airing and turning device for a salt field, relates to the technical field of industrial production, and aims to solve the problems that most of existing salt fields are manually turned and aired, the laying cost of seaside electric power lines is relatively high, part of the existing salt fields adopt solar energy to stir salt, and most of existing stirring salt airing devices are stirring mechanisms and are extremely easy to corrode to cause the extremely- unstable drying effect; the device comprises a salt pond, pneumatic mechanisms are vertically and rotationally mounted at the corners of the salt pond respectively, and every two adjacent pneumatic mechanisms are connected in a sliding manner through four L-shaped linkage insertion rods in an annular array; and a wind shaft stirring paddle is vertically, upwards and rotationally mounted in the middle of the salt pond. According to the invention, the wind shaft stirring paddle is vertically and rotatably mounted at the butt joint position of the four cohesion bottom plates, so that crystals separated out from salt water can be finally converged to the middle position of the salt pond along the inclined plane, and the salt water can be aired at the edge position all the time.

The invention discloses a manufacturing method for a chain saw type rail crawler loader. The chain saw type rail crawler loader is structurally composed of a gasoline engine, an elbow pipe, a soft shaft, a turbine chamber, a sawtooth chain, a guide plate, a plurality of pickaxes and a handle. The elbow pipe is connected to a base of the transmission shaft. The elbow pipe and the turbine chamber are connected into a whole body. A chain wheel and a support are arranged on an output shaft of the turbine chamber. The sawtooth chain is arranged on the chain wheel. The guide plate is arranged in the sawtooth chain and is fixed on the support. The pickaxes are arranged on the sawtooth chain. The handle and a support are arranged between the turbine chamber and the gasoline engine. Bottom legs are arranged below the elbow pipe and enable the machine to stand on the ground.