30results about How to "Automatically adjust the center of gravity" patented technology

The invention relates to a self-balancing stretcher. The stretcher comprises a first framework layer, wherein a second framework layer and a third framework layer are arranged on the inner side of the first framework layer in turn; two support rods in a length direction or a width direction of the second framework layer are rotatably connected with two support rods on the first framework layer respectively, and the other two support rods on the second framework layer are rotatably connected with two support rods on a third framework layer; the connection joints of the first framework layer, the second framework layer and the third framework layer are positioned in the center of the support rods to which the connection joints belong respectively; a sliding mechanism is arranged on two support rods in the length direction of the third framework layer respectively; the third framework layer is in sliding connection with a fourth framework layer by the sliding mechanism; two support rods on the fourth framework layer which are connected with the third framework layer are arc-shaped; fastening bolts are arranged on the sliding mechanism; and the inner side of the fourth framework layer is connected with a bed surface. The stretcher of the invention has the advantages of high vibration damping performance, capacity of automatically adjusting the balance, simple structure, convenient and flexible use and low cost.

Provided is an imitated human foot type stair-climbing wheelchair. A first chair foot of the stair-climbing wheelchair comprises a first control rod, a first movable hinge, a second movable hinge, a first track, a first push rod, a first transverse rod, a first telescopic rod and a first telescopic rod control rod, wherein the first telescopic rod control rod is installed at the upper end of the first control rod, the first control rod is connected with a first armrest through the first movable hinge, the first control rod is connected with the first push rod through the second movable hinge, the first push rod is connected with the first track through a moving pair, the first track is welded on a chair body, the first transverse rod and the first push rod are welded together to form a whole, the first telescopic rod is welded at an appropriate position below the first push rod. A second chair foot is completely identical to the first chair foot in structure and is installed on the plane different from the first chair foot. The imitated human foot type stair-climbing wheelchair is manually operated, can roll on the ground, can also achieve imitated human foot type stair climbing and is light to operate, simple and convenient.

The invention provides an anti-fall infusion support for nursing infusion in a hospital. The anti-fall infusion support comprises an annular support, wherein a plurality of travelling wheels are arranged at the bottom of the support; a top plate is arranged at the upper part of the support; a plurality of cross arms are arranged on the inner side of the support, and point to a circle enter of a plane circle where the support is located; an annular track is horizontally arranged an the end part of each cross arm; a gravity adjusting mechanism is arranged on each track; a mounting cylinder is arranged at the center of the top plate; a telescopic infusion support is arranged in the mounting cylinder; an inclination monitoring mechanism is arranged on the outer side of the mounting cylinder; acontrol mechanism which is in signal connection with the gravity adjusting mechanism, the inclination monitoring mechanism and the telescopic infusion support is arranged on the top plate. The infusion support disclosed by the invention can be used in a consulting room of the hospital, and the accidents during infusion caused by skewing of the infusion support due to accident touch of patients orfamily members are avoided. According to the anti-fall infusion support, the gravity center can be automatically adjusted, so that the stability of the infusion support is ensured; the anti-fall infusion support has a correcting effect on skewing caused by collision.

The invention discloses a safety lifting platform for high ceiling cleaning. The safety lifting platform for high ceiling cleaning comprises a base, wherein a left-right symmetrical spindle is rotatably connected into the base; wheels are fixedly arranged on the front end face and the back end face of the spindle; a lifting mechanism is arranged on the top end face of the base; a fixed station isarranged on the upper side of the base; left-right symmetrical connecting blocks matched with lifting mechanisms are fixedly arranged on the end face of a bottom plate of the fixed station; a workingtable is suspended on the upper side of the fixed station through a suspension device in matching way; a balance mechanism is arranged in the working table; and a cleaning tank is fixedly arranged onthe end face of the left side of the working table. According to the safety lifting platform for high ceiling cleaning provided by the invention, platform lifting is realized, operating personnel climbs to carry out architectural decoration or dedusting operation, and energy produced by the moving and lifting of the equipment is utilized for pressurizing a pressure chamber, so that when the operating personnel works on the platform, the platform can utilize pressure in the pressure chamber to automatically adjust a gravity center of the platform so as to be always kept at a balance state.

The invention discloses improvement on S-shaped sofa chair for sitting and laying, which consists of a front leg pipe system, a rear leg pipe system, a footrest system, a chair seat, a chair back, a footrest plate, hinges, positioning pins, a hinge pipe, leg wheels and a connecting fabric, wherein the chair back consists of a chair back main body and a waist pad; the hinge pipe consists of a long sleeve, a short sleeve, an internal pipe, a spring, a positioning spring and a hinge seat; the long sleeve and the short sleeve are bodies with hollow cavities; the internal pipe is wrapped in the long sleeve and the short sleeve; the outer walls of the long sleeve and the short sleeve are connected with lugs; one end of the long sleeve is connected with a spring, the internal pipe is a body with a hollow cavity; one end of the internal pipe is closed, and the spring is wrapped and connected in the internal pipe; one end of the positioning spring is connected with the long sleeve, and the other end of the positioning sleeve is connected with a short sleeve; the main body of the chair back is connected with the chair back hinge of the rear leg pipe system and the long sleeve of the hinge pipe; and the waist pad is connected with the short sleeve of the hinge pipe through a bolt. The S-shaped sofa chair has the advantages of simple mechanism, two purposes of sitting and laying, automatic regulation of gravity center, small space occupation in idle state and enough support to the waist.

The invention relates to a medical sickbed. The medical sickbed comprises a bed frame; a group of gravity adjusting device and a turn-over device are arranged in the bed frame; the gravity adjusting device comprises a group of adjusting air cylinders; each adjusting air cylinder is fixedly connected with a fixing plate; a group of support rods are uniformly distributed on each fixing plate; the bed frame is connected with a camera and a display control screen respectively; the camera and the display control screen are connected with a control processor; the bed frame is also provided with a defecation groove; the defecation groove is provided with a sliding plate groove; the lower side of the defecation groove is connected with an excrement guide pipe; the turn-over device comprises a turn-over air cylinder; the turn-over cylinder is connected with turn-over plates through lifting rods. According to the sickbed, the stress gravity of patients with mobility difficulties can be automatically adjusted, the local stress of a human body is relieved, the stress burden of the human body is reduced, diseases such as bedsore are reduced, the medical sickbed can automatically help a patient to turn over, is favorable for medical staff to observing the condition of the patient in real time and provides convenience for defecation, and the workload of nurses is reduced.

The invention relates to the technical field of transporters, in particular to a planetary wheel type stair climbing device. The stair climbing device comprises a mechanical assembly and an electrical assembly, wherein the mechanical assembly comprises a transmission device, a brake device, a mechanical balance device and a carrying device; the electrical assembly comprises a power supply, a controller and a circuit loop device. With the adoption of the planetary wheel type stair climbing device, defects of traditional stair climbing devices are effectively overcome, the center of gravity of carried goods can be adjusted automatically on stairs, the goods are transported stably and efficiently, and the device is economical in manufacturing cost, simple in structure and high in practicability.

The invention discloses ship draught and gravity center position adjusting equipment which comprises a ship bottom plate, a ship cavity is formed in the upper side of the ship bottom plate, a rotatingmechanism is arranged on the upper end face of the ship bottom plate, and the rotating mechanism comprises a large cavity communicating with the outside. Two outer walls are fixedly arranged on the upper end face of the ship bottom plate in a bilateral symmetry mode with the large cavity as the center, the ship cavity and the large cavity are isolated through the two outer walls, a rotating shaftis arranged in the large cavity, and the rotating shaft is rotationally connected to the outer walls. Therefore, the draft of the ship can be controlled without ballast water; The ballast water treatment cost is reduced, damage to an ecological system is reduced, the gravity center of the ship can be automatically adjusted, the ship is kept in a slight stern inclination state all the time, the stern thruster is completely immersed in water, and the operability and high speed of the ship are guaranteed.

The invention relates to a medical sickbed. The medical sickbed comprises a bed frame; a group of gravity adjusting device and a turn-over device are arranged in the bed frame; the gravity adjusting device comprises a group of adjusting air cylinders; each adjusting air cylinder is fixedly connected with a fixing plate; a group of support rods are uniformly distributed on each fixing plate; the bed frame is connected with a camera and a display control screen respectively; the camera and the display control screen are connected with a control processor; the bed frame is also provided with a defecation groove; the defecation groove is provided with a sliding plate groove; the lower side of the defecation groove is connected with an excrement guide pipe; the turn-over device comprises a turn-over air cylinder; the turn-over cylinder is connected with turn-over plates through lifting rods. According to the sickbed, the stress gravity of patients with mobility difficulties can be automatically adjusted, the local stress of a human body is relieved, the stress burden of the human body is reduced, diseases such as bedsore are reduced, the medical sickbed can automatically help a patient to turn over, is favorable for medical staff to observing the condition of the patient in real time and provides convenience for defecation, and the workload of nurses is reduced.

The invention provides a seating and lying two-purpose seat system. The system consists of a front leg pipe system, a back leg pipe system, a slide rail, a seat, a backrest, a positioning pin, a hinge pipe and casters, wherein a joint face of the slide rail is connected with an upper horizontal pipe of the front leg pipe system, and the other joint face of the slide rail is connected with an upper horizontal pipe of the back le pipe system; the front leg pipe system is connected with the back leg pipe system in a sliding way; a backrest hinge on the back part of the backrest is hinged with through holes of two backrest pipes of the back leg pipe system; the positioning pin is connected to the upper horizontal pipe of the front leg pipe system; a pin column of the positioning pin passes through a hole on the upper horizontal pipe of the front leg pipe system and is inserted into a hole of the upper horizontal pipe of the back leg pipe system; the outer wall of a casing of the hinge pipe is connected with the backrest; and a hinge seat is connected with the upper horizontal pipe of the front leg pipe system. The seat system has the advantages that: the seat can be used for seating and lying; the gravity center of the seat system can be adjusted automatically; and the inclination angle of the backrest is fixed and adjustable.

Disclosed is a bicycle. A handlebar (1), a steering bar (7), a braking system, a bicycle frame, a front steering wheel (14), pedal plate driving devices, speed changing boxes (44) and rear driving wheels (45) are arranged on a bicycle body respectively, the front steering wheel (14) is mounted below the steering bar, the pedal plate driving devices and the speed changing boxes (44) are mounted on the bicycle frame, and the rear driving wheels (45) are disposed on output shafts of the speed changing boxes. The bicycle has the advantages that pedal plate driving parts (17) are added between pedal plates (22) and driving connecting rods (32), speed changing box driving parts (37) are added between the driving connecting rods (32) and driving shafts (42) of the speed changing boxes, two sets of independent pedal plate driving device driving systems are disposed under two pedal plates, and thereby, defects of a bicycle of Chinese patent number 201210084957.X can be overcome, for example, two speed-up boxes are arranged on left and right and output motive power to one shaft, twisting of output shafts can occur and one wheel can not contact with the ground during driving on uneven roads, the center of gravity of a user moves from side to side when the user treadles, instability is severe, pedaling self-moving is quite dangerous, personal safety is endangered, twisting of the output shafts can occur, the speed-up boxes can not work and the pedaling self-moving function can not be achieved.

Provided is an imitated human foot type stair-climbing wheelchair. A first chair foot of the stair-climbing wheelchair comprises a first control rod, a first movable hinge, a second movable hinge, a first track, a first push rod, a first transverse rod, a first telescopic rod and a first telescopic rod control rod, wherein the first telescopic rod control rod is installed at the upper end of the first control rod, the first control rod is connected with a first armrest through the first movable hinge, the first control rod is connected with the first push rod through the second movable hinge, the first push rod is connected with the first track through a moving pair, the first track is welded on a chair body, the first transverse rod and the first push rod are welded together to form a whole, the first telescopic rod is welded at an appropriate position below the first push rod. A second chair foot is completely identical to the first chair foot in structure and is installed on the plane different from the first chair foot. The imitated human foot type stair-climbing wheelchair is manually operated, can roll on the ground, can also achieve imitated human foot type stair climbing and is light to operate, simple and convenient.

The invention relates to a chopstick, which comprises a first end and a second end, wherein the first end can be used for clamping food and comprises a closed cavity; a flowing substance is containedin the closed cavity, when the first end is lower than the second end, the flowing substance flows to the first end, and the gravity center of the whole chopstick is located at the first end; when thesecond end is lower than the first end, the flowing substance flows to the second end, and the gravity center of the whole chopstick is located at the second end. The chopstick (1-1) comprises a clamping part (1-13) and a handheld part (1-14) and is characterized by comprising a closed cavity, wherein a flowing substance (1-2) is arranged in the closed cavity; when the height of the clamping partis equal to that of the handheld part, the flowing substance flows to the handheld part, and the gravity center (G) of the whole chopstick is located at the handheld part of the chopstick; when the clamping part is lower than the handheld part, the flowing substance flows to the clamping part, and the gravity center of the whole chopstick is located at the clamping part of the chopstick. The chopstick has the beneficial effects that the gravity center can be automatically adjusted, the operation difficulty is lowered, the learning difficulty is lowered, clamping tilting can be reduced, the safety and sanitation are achieved, and a brand-new technical thought is provided.

The invention discloses an office chair for sitting and laying, which consists of a front leg pipe system, a rear leg pipe system, a sliding rail, a positioning pin, a tilting system, a chair seat, a chair back, a connecting fabric, hinge pipes and leg wheels, and is characterized in that: the tilting system consists of an inclined-surface seat, rotating arms, a support and a pin roller; one connecting face of the sliding rail is connected with the upper cross pipe of the front leg pipe system and the other connecting face of the sliding rail is connected with the upper cross pipe of the rear leg pipe system; the front leg pipe system and the rear leg pipe system are in sliding connection; the curved surface of the front leg pipe system is connected with the hinge of the hinge pipe through a screw; the chair back is connected with the two hinges of the rear leg pipe system and the connecting lug of the sleeve of the hinge pipe; the inclined-surface seat of the tilting system is connected with the upper cross pipe of the rear leg pipe system through a screw; the supporting is connected with the upper cross pipe of the front leg pipe system through a screw; and the chair seat is connected with the two rotating arms of the tilting system through screws. The office chair has the advantages of two purposes of sitting and laying, automatic adjustment of center of gravity and automatic adjustment of the inclined angles of the chair back and the seat face.

The invention discloses a carrying platform for automotive interior trim panels. The carrying platform comprises a base, a bearing platform and a plurality of bearing devices; and the bearing devicesare uniformly installed at the left part and the right part of the upper end of the base respectively, the bearing platform is fixed at the upper ends of the bearing devices, and moving grooves whichare longitudinally arranged are uniformly formed in the lower end of the base. According to the carrying platform, through the coordination of the bearing devices and the bearing platform, when the automotive interior trim panels are borne, the gravity center can be automatically adjusted, manual adjustment is reduced, the loading efficiency of the automotive interior trim panels is improved, andmanpower and material resources are saved.

The invention relates to a self-balancing stretcher. The stretcher comprises a first framework layer, wherein a second framework layer and a third framework layer are arranged on the inner side of the first framework layer in turn; two support rods in a length direction or a width direction of the second framework layer are rotatably connected with two support rods on the first framework layer respectively, and the other two support rods on the second framework layer are rotatably connected with two support rods on a third framework layer; the connection joints of the first framework layer, the second framework layer and the third framework layer are positioned in the center of the support rods to which the connection joints belong respectively; a sliding mechanism is arranged on two support rods in the length direction of the third framework layer respectively; the third framework layer is in sliding connection with a fourth framework layer by the sliding mechanism; two support rods on the fourth framework layer which are connected with the third framework layer are arc-shaped; fastening bolts are arranged on the sliding mechanism; and the inner side of the fourth framework layeris connected with a bed surface. The stretcher of the invention has the advantages of high vibration damping performance, capacity of automatically adjusting the balance, simple structure, convenientand flexible use and low cost.

Disclosed is a bicycle. A handlebar (1), a steering bar (7), a braking system, a bicycle frame, a front steering wheel (14), pedal plate driving devices, speed changing boxes (44) and rear driving wheels (45) are arranged on a bicycle body respectively, the front steering wheel (14) is mounted below the steering bar, the pedal plate driving devices and the speed changing boxes (44) are mounted on the bicycle frame, and the rear driving wheels (45) are disposed on output shafts of the speed changing boxes. The bicycle has the advantages that pedal plate driving parts (17) are added between pedal plates (22) and driving connecting rods (32), speed changing box driving parts (37) are added between the driving connecting rods (32) and driving shafts (42) of the speed changing boxes, two sets of independent pedal plate driving device driving systems are disposed under two pedal plates, and thereby, defects of a bicycle of Chinese patent number 201210084957.X can be overcome, for example, two speed-up boxes are arranged on left and right and output motive power to one shaft, twisting of output shafts can occur and one wheel can not contact with the ground during driving on uneven roads, the center of gravity of a user moves from side to side when the user treadles, instability is severe, pedaling self-moving is quite dangerous, personal safety is endangered, twisting of the output shafts can occur, the speed-up boxes can not work and the pedaling self-moving function can not be achieved.

The invention discloses an engine transportation fixing support. The engine transportation fixing support comprises a rotating frame, a mounting plate, supporting plates, a shock absorber and a rotating shaft, wherein two supporting plates are arranged on the mounting plate, the shock absorber is arranged between the mounting plate and the supporting plates, the rotating shaft is rotationally connected to the two supporting plates, the rotating frame is arranged on the rotating shaft, an engine is fixed on the rotating frame, a friction wheel is arranged on the rotating shaft, friction cams are arranged on the two sides of the friction wheel, the two friction cams are attached to the friction wheel, the friction cams are arranged on the connecting shaft, worm wheels are arranged on the twoconnecting shafts, the two worm wheels are correspondingly meshed with two ends of a bidirectional worm, and the bidirectional worm is arranged on the supporting plates. According to the engine transportation fixing support, when a transport vehicle jolts, the rotating frame rotates to form buffering, impact on the engine is reduced, damping of rotation of the rotating frame is generated throughfriction between the friction cams and the friction wheel, so that the engine quickly recovers to a stable state.

The invention provides a seating and lying two-purpose seat system. The system consists of a front leg pipe system, a back leg pipe system, a slide rail, a seat, a backrest, a positioning pin, a hinge pipe and casters, wherein a joint face of the slide rail is connected with an upper horizontal pipe of the front leg pipe system, and the other joint face of the slide rail is connected with an upper horizontal pipe of the back le pipe system; the front leg pipe system is connected with the back leg pipe system in a sliding way; a backrest hinge on the back part of the backrest is hinged with through holes of two backrest pipes of the back leg pipe system; the positioning pin is connected to the upper horizontal pipe of the front leg pipe system; a pin column of the positioning pin passes through a hole on the upper horizontal pipe of the front leg pipe system and is inserted into a hole of the upper horizontal pipe of the back leg pipe system; the outer wall of a casing of the hinge pipe is connected with the backrest; and a hinge seat is connected with the upper horizontal pipe of the front leg pipe system. The seat system has the advantages that: the seat can be used for seating and lying; the gravity center of the seat system can be adjusted automatically; and the inclination angle of the backrest is fixed and adjustable.

The invention relates to a balance adjustable offshore floating wind driven generator and belongs to the technical field of offshore wind driven generators. The balance adjustable offshore floating wind driven generator comprises a wind driven generator set, an upper connecting plate, an inclined connecting plate, a lower connecting plate, outer floats, an inner float, a bearing body, a ballast tank, a universal pulley mechanism, a heaving frame, a mooring rope and an anchor pile. The wind driven generator set is fixed to the position above the inner float through a bolt; the inner float are welded to the four outer floats through the upper connecting plate, the inclined connecting plate and the lower connecting plate. The four floats form a square shape. The inner float is located in thecenter of the square formed by the four outer floats. The bearing body is fixed to the position below the outer floats through a bolt. The ballast tank is of a closed hollow semispherical structure. Sand or seawater is used as a ballast medium in the ballast tank. The floating gravity center and the sea level are located at the same height by controlling the weight of the ballast medium. The balance adjustable offshore floating wind driven generator has the beneficial effects that the gravity center of the wind driven generator can be automatically adjusted, and the stability of the wind driven generator is improved.

The invention discloses a spherical bogie. The spherical bogie is located on the lower portion of a car body (1) of a rail wheel type shuttle mine car. The spherical bogie comprises a wheel set (4), side beams (10), a spring assembly (3) and a bottom bolster (8), wherein the side beams are symmetrically arranged and used for connecting the wheel set, the bottom bolster is arranged between the side beams, the car body is provided with a beam (2), a spherical groove (9) is formed in the beam, a spherical convex block (5) which is matched with the spherical groove (9) is arranged on the corresponding position of the bottom bolster, a lubricating oil passage is arranged between the spherical groove and the spherical convex block, support plates (6) are arranged on the spherical groove and the spherical convex block, and limit chains (7) are clamped between the support plates. By means of the spherical bogie, the center of gravity of the car body can be adjusted automatically, the lubricating oil passage is arranged, the problem o friction is effectively solved, the spherical groove is prevented from exceeding a limiting position by the limit chains arranged around the spherical bogie during 360-degree rotating of deflection, the spherical groove can controlled in a certain range, it is guaranteed that the shuttle car conducts normal transport work, and the phenomenon that the shuttle car falls from an uneven or irregular rail is prevented.

The invention discloses a park comprehensive service intelligent robot and a control method, and belongs to the technical field of robots, the park comprehensive service intelligent robot comprises a box body, first threaded rods which can move up and down in the box body and downwards extend out of the box body, and the first threaded rods are divided into a left group and a right group; a driving source is arranged at the bottom of each group of first threaded rods; a third threaded rod capable of horizontally moving and vertically moving is further arranged in the box body, and the third threaded rod downwards extends out of the box body and is connected to an auxiliary wheel at the bottom of the third threaded rod; the adjusting cylinder is arranged in the rotating box body; the adjusting ball is positioned in the adjusting cylinder; through mutual cooperation of the first threaded rod capable of moving up and down and the third threaded rod capable of moving horizontally and up and down, the robot can quickly cross over steps and walk along with pedestrians, and in the process of climbing over the steps, the gravity center of the whole robot can be automatically adjusted, rollover of the robot is prevented, and the stability is greatly improved.

The invention provides an intelligent anti-toppled infusion support for children. The infusion support comprises an annular bracket, the bottom of the bracket is provided with a plurality of walking wheels, the upper portion of the bracket is provided with a top plate, the inner side of the bracket is provided with a plurality of transverse beams, the transverse beams point to a center of a planecircle where the bracket is located, the end portions of the transverse beams are horizontally provided with an annular rail provided with a gravity center adjustment mechanism, the center of the topplate is provided with a mounting cylinder, the mounting cylinder is internally provided with an infusion support body, the outer side of the mounting cylinder is provided with a slope monitoring mechanism, and the top plate is provided with a control mechanism in signal connection with the gravity center adjustment mechanism and the slope monitoring mechanism. The intelligent anti-toppled infusion support for the children has the advantages that the infusion support can be used in pediatric consulting rooms, accidents caused by infusion support skew caused by children playing can be avoided during infusion, the infusion support can automatically adjust the center of gravity to ensure the stability of the infusion support, and the infusion support has a correction effect on the skew causedby collision.

The invention relates to a sitting-lying two-purpose five-feet office chair which is composed of a front feet pipe system, an air spring, a chair seat bracket, a sliding hinge system, a chair back support arm, a positioning device, a rebound device, a chair seat and a chair back. A roller wheel of the back feet pipe system is connected with a slide way of the front feet pipe system; a connection pipe of the front feet pipe system is connected with the air spring; a steep pipe frame of the chair seat bracket is connected with the chair seat; a connection sleeve is connected with the air spring; end of the steel pipe frame is welded with the joint of the sliding hinge system; a long outer pipe of the sliding hinge system is connected with main body of the chair back; a short outer pipe is connected with a adjusting cushion of the chair back; lower part of the chair back support arm is connected with a flat bar of the back feet pipe system; upper hinge board is connected with the main body of the chair back; the positioning device is connected with the chair seat bracket; one end of the main body of the rebound device is connected with a protecting cover through a bolt; another bolt is screwed with a threaded hole of the flat bar of the back feet pipe system. Advantages: the chair of the invention is capable of not only sitting but lying, automatically adjusting gravity center; simultaneously the inclination angle of the back is fixedly adjustable.

A fixed bracket for engine transportation, including a turret, a mounting plate, a support plate, a shock absorber, and a rotating shaft; two support plates are arranged on the mounting plate; a shock absorber is provided between the mounting plate and the support plate The rotating shaft is rotatably connected to the two supporting plates; the rotating frame is arranged on the rotating shaft; the engine is fixed on the rotating frame; the rotating shaft is provided with a friction wheel; There are friction cams; the two friction cams are attached to the friction wheels; the friction cams are arranged on the connecting shaft; the two connecting shafts are provided with worm gears; the two worm gears mesh with the two ends of the two-way worm respectively; the two-way worm Set on the support plate; in the present invention, when the transport vehicle bumps, the turret rotates to form a buffer, reducing the impact on the engine; the friction of the friction cam and the friction wheel produces the damping of the turret rotation, so that the engine quickly returns to a stable state .

The invention discloses a seat system capable of sitting and lying, which is characterized by consisting of a front leg system, a rear leg system, steel balls, a spring, a seat surface, a backrest, a front foot stand wheel and a rear foot stand wheel; a horizontal pipe on a backrest pipe of the rear leg system is inserted into an upper horizontal pipe of the front leg system so as to realize sliding connection through the steel balls in recesses on respective pipe walls; a hole of the horizontal pipe on the backrest pipe is connected with a rectangular hole of the upper horizontal pipe through the spring; the backrest is hinged with two through holes of the backrest pipe through a rear hinge; and the rear foot stand wheel and the front foot stand wheel are connected with the front leg system and the rear leg system through threads respectively. The seat system has the advantages that: a user can sit and lay on the seat, and the center of gravity is automatically adjusted simultaneously.

The invention discloses an S-shaped sofa with the dual purposes of sitting and lying down, which comprises a front foot tube system, a rear foot tube system, a leg supporter system, a seat, a back, a foot rest, a hinge, a fixed pin, an articulated pipe and a trundle, wherein a rack at the lower part of a sliding tube of the rear foot tube system is connected with a gear at the rear part of a connection plate of the front foot tube system in a rolling mode; the upper part of the sliding tube is connected with a spacing wheel at the rear part of the connection plate in the rolling mode; the rack at the upper part of the sliding tube of the leg supporter system is connected with the gear at the front part of the connection plate of the front foot tube system in the rolling mode; the lower part of the sliding tube is connected with the spacing wheel at the front part of the connection plate in the rolling mode; the seat is connected with the connection plate of the front foot tube system and is connected with the foot rest through the hinge; the other end of the foot rest is connected with a roller wheel horizontal pipe of the leg supporter system in a sliding mode; the back is respectively connected with a back hinge of the rear foot tube system and a casting pipe of the articulated pipe through a bolt; and a hole of the other end of the articulated pipe on a hinge seat is connected with the spacing wheel at the rear part of the connection plate of the front foot tube system through the bolt. The invention has the beneficial effects of simple mechanism, dual purposes of sitting and lying down, automatic adjustment of center of gravity and occupying little space when not being used.