34results about How to "Adjust the size of the resistance" patented technology

The invention belongs to the related field of medical apparatuses, and particularly relates to an adjustable domestic treadmill. The adjustable domestic treadmill comprises a base, a supporting rod isfixedly connected to the upper end of the base, armrests are fixedly connected to the upper end of the supporting rod, slide grooves are formed in the two sides of the upper end of the base, two slide plates are slidably connected to the interiors of the slide grooves, and connected with each other through a linkage rope; a resistance adjusting mechanism which abuts against the linkage rope is arranged in the base, a transmission rope is fixedly connected between the two slide plates, and a step counting mechanism which is in transmission connection with the transmission rope is arranged on the base. According to the adjustable domestic treadmill, a friction disc is arranged, a user can adjust the friction disc according to requirements, and the resistance to the slide plates in the slideprocess can be adjusted; through the arrangement of the linkage rope, the two slide plates can move synchronously, the maximal distance between the two slide plates is always the same, thus the steplength of the user can be corrected, and the effect of training the coordination of the user is achieved.

The invention relates to the technical field of general thoracic surgery nursing, in particular to a respiratory training device for general thoracic surgery nursing and a using method thereof.The respiratory training device comprises a respiratory training cylinder, a connecting bearing is installed on the upper portion of the respiratory training cylinder, and an expiration training adjusting lead screw is arranged in the connecting bearing in a penetrating mode; the breathing training device comprises a breathing training cylinder, an adjusting movable block is installed in the breathing training cylinder, an expiration resistance spring is installed below the adjusting movable block, an expiration resistance piston is installed below the expiration resistance spring, limiting sliding grooves are formed in the two sides of the inner wall of the breathing training cylinder, and a training cylinder air outlet is formed in the right side of the breathing training cylinder. And the inspiration training cylinder body is mounted on the left side of the respiratory training cylinder body. According to the breathing training device, the breathing training adjusting lead screw is rotated to push the adjusting movable block to move in the breathing training cylinder, then the distance between the adjusting movable block and the breathing resistance piston is adjusted, the resistance during breathing training is adjusted, and the better training effect is achieved.

The invention discloses a vine climbing stand for planting of Cucumis melo L. var. agrestis Naud., comprising a vine climbing mechanism and water-storage driving mechanisms. The vine climbing mechanism comprises a vine climbing pole, an upper sleeve, a lower sleeve, a connecting plate and a connecting rope; the lower sleeve sleeves the lower portion of the vine climbing pole, the upper sleeve sleeves the vine climbing pole, a disc is fixedly arranged on the outer wall of the upper sleeve, and the disc is connected with the lower sleeve through the connecting rope; each water-storage driving mechanism comprises a water storage tank, a U-shaped pipe is arranged under the water storage tank, one end of the U-shaped pipe is communicated and fixedly connected with the bottom surface of the water storage tank, a sealing plug is slidably mounted in the U-shaped pipe, a drive rod is fixedly arranged on the top surface of the sealing plug perpendicularly, and the upper end of the drive rod is perpendicularly fixedly connected with the disc. The vine end of Cucumis melo L. var. agrestis Naud. is fixed to the lower sleeve, rain water collected in the water storage tanks gradually pushes the sealing plugs to move upwards through the U-shaped pipes respectively, the sealing plugs drive the upper sleeve to move upwards, the upper sleeve drives the lower sleeve to move upwards, and then the vine of Cucumis melo L. var. agrestis Naud. is driven to move upwards and be twisted on the vine climbing pole.

The invention provides a self-sinking type deep foundation pit barrier wall structure. The self-sinking type deep foundation pit barrier wall structure comprises a barrel type barrier wall body, wherein the bottom of the barrel type barrier wall body is provided with a ground breaking structure, and the ground breaking structure and the barrel type barrier wall body are in gravity matching to achieve downward ground breaking. The self-sinking type deep foundation pit barrier wall structure further comprises resistance enhancement devices, wherein the resistance enhancement devices are arrangedon the outer side wall of the barrel type barrier wall body and used for cooperating with a foundation to adjust the upward resistance applied by the foundation to the barrel type barrier wall body.The bottom of the barrel type barrier wall body is provided with the ground breaking structure, hammering operation is avoided, self-sinking can be achieved, and construction procedures are decreased;generated construction noise is low, the construction duration is short, and pollution to the surrounding environment is small; and the resistance enhancement devices are arranged to adjust the upward resistance applied by the foundation to the barrel type barrier wall body, and thus, the sinking speed and/or perpendicularity of the self-sinking type deep foundation pit barrier wall structure canbe controlled according to different soil body conditions. The invention further provides a construction method for an underground space.

The invention discloses an adjustable pressure sensor and a using method thereof and relates to the technical field of electronic devices. The device comprises a cylindrical base body, wherein a thermal resistor is arranged in the cylindrical base body and is of an annular structure; a plurality of guide grooves are formed in one side face of the cylindrical base body in the circumferential direction, guide pieces are slidably matched with the interiors of the guide grooves, and connecting rods are fixedly connected to the surfaces of the guide pieces; one end face of the connecting rod is fixedly connected with a pressure detection mechanism, and the pressure detection mechanism is matched with the thermal resistor in position. Through the design of the reset elastic piece, the thermal resistor, the spherical stress plate and the heat conversion element, when pressure acts on the spherical stress plate, a distance between the heat conversion element and the thermal resistor can be flexibly adjusted, and the heat conversion element is utilized to sense the temperature change near the thermal resistor, so pressure acting on the spherical stress plate is detected; compared with a traditional pressure sensor, output of capacitance or resistance variation is easier to measure.

The invention relates to the field of fitness equipment, in particular to a rowing machine capable of adjusting the angle of a water tank, the machine comprises a bottom frame and the water tank, thewater tank is hinged with the bottom frame, and the placing angle of the water tank is adjusted through an angle adjusting mechanism. According to the rowing machine capable of adjusting the angle ofthe water tank, the placing angle of the water tank is flexibly and instantly adjusted through the angle adjusting mechanism; the resistance can be adjusted, meanwhile, a user can maintain the shape of water in the water tank through gravity in the adjusting process according to needs, the inertia effect is reduced, a certain resistance value is maintained, the better motion effect and mechanicalbalance are achieved, and the rowing experience is greatly improved.

An automobile steering gear wear resistance detection device disclosed by the present invention comprises a main detection box, batch frames and a pressurization mechanism, the main detection box comprises a box frame and transmission mechanisms, the transmission mechanisms are uniformly arranged in the middle of the box frame, the transmission mechanisms are rotatably connected with the box frame, the batch frames are installed on the two sides of the box frame, and the pressurization mechanism is installed on the box frame. The batch frames are arranged on the two sides of the main detection box, the batch frames are horizontally and slidably connected with the box frame, the pressurizing mechanisms are arranged on the side faces of the batch frames, and the pressurizing mechanisms are fixedly connected with the box frame, and the batch frames are installed on the two sides of the main detection box, so that a user can conveniently install multiple sets of gear rods and racks at the same time through the batch frames for matched detection use; and meanwhile, the purpose of increasing resistance to the rack is achieved by installing the pressurizing mechanism on the side face of the batch frame, and the purposes of simulating the actual use environment and improving the detection efficiency are achieved.

The invention discloses a medical rehabilitation device, and particularly relates to equipment for chest postoperative medical rehabilitation training and strengthening improvement. The equipment is characterized in that the equipment comprises a main support and an operating mechanism, the operating mechanism comprises an operating assembly, a platform is arranged below the operating mechanism, a resistance mechanism for providing motion resistance and a tensioning mechanism for adjusting the resistance are arranged on the two sides of the operating mechanism, a buffering mechanism for controlling the motion rhythm is further arranged on the main support, the buffering mechanism comprises a lifting assembly moving up and down along with the operating mechanism and a supporting assembly arranged on the main support, and a buffer assembly for limiting the movement speed of the lifting assembly is arranged on the supporting assembly. A user lies on the platform, chest, shoulder and upper limb muscles are used for overcoming resistance to push the operating mechanism away from the user to achieve the muscle gaining and hyperemia effects, then the descending speed of the operating mechanism is limited through the buffering mechanism, and the situation that a patient puts down the operating mechanism too fast due to exhaustion, and the muscles are strained is effectively prevented.

The invention discloses a bus charging control device, a driver and a bus charging control method thereof. The device comprises: a control unit used for controlling a branch where a charging control unit is located to be disconnected and controlling a branch where a current inhibition unit is located to be connected under the condition that a driver is connected with a charging power supply; the current inhibition unit used for sampling the input current of the charging power supply and suppressing the change of the input current under the condition that the input current changes according toa sampling result, wherein the control unit is further used for controlling the branch where the current inhibition unit is located to be disconnected and controlling the branch where the charging control unit is located to be connected under the condition that a bus capacitor is charged through the current inhibition unit; and the charging control unit used for controlling the charging power supply to charge the bus capacitor. According to the scheme, the problem that the control difficulty is large when the PTC resistor is used for restraining the input current at the front stage of the driver input circuit can be solved, and the effect of reducing the restraining difficulty of the front-stage input current of the driver input circuit is achieved.

The invention discloses a seismic isolation device for a seismic protection platform. The seismic isolation device comprises a ball I, a base, a limiting frame, a limiting device and a damping device,wherein the base is connected with the limiting frame, the ball I is arranged in a gap between the base and the limiting frame, the limiting device and the damping device are arranged at the two endsof the ball I respectively, and the two ends of the ball I extend out of the limiting frame and the base respectively. The seismic isolation device is reasonable in structure and convenient to use, and under the action of seismic waves, displacement of objects can be effectively avoided, and rollover of the objects is prevented.

The invention discloses an air resistance simulation device for physical training and a testing method thereof. The air resistance simulation device comprises a base ring arranged on the ground and a wind tunnel box with the bottom rotationally connected with the base ring, and a wind resistance measuring device is arranged in the base ring and comprises a guide rail, a sliding box with the bottom slidably connected with the guide rail, a first wind resistance detection component arranged at one end of the guide rail, a translation plate arranged in the sliding box, and a second wind resistance detection component arranged on the inner wall of the sliding box. The detection translation plate is provided with a frame fixing device, and the frame fixing device comprises a rear wheel rotating speed detection part and a front wheel rotating angle detection part; one side of the wind tunnel box is provided with a rotation driving part, one end of the wind tunnel box is provided with an exhaust port, the other end is communicated with three bellows, one end of each bellows is provided with an opening-closing part, the other end is provided with an air inlet temperature adjusting part, and wind power parts are arranged in the bellows. According to the simulation device and the testing method, trainees can conveniently know the influence of different postures on the air resistance.

The invention relates to the technical field of a control valve and specifically discloses an automobile engine oil control valve. In comparison with an engine oil control valve of the prior art, the automobile engine oil control valve disclosed by the invention is capable of realizing sealing by virtue of a sealing sleeve, reducing the surface machining precision and assembly precision of a valve core and a valve body and lowering the production cost; an elastic part for providing pre-tightening force is arranged between the sealing sleeve and a sealing nut; the pre-tightening force can be adjusted by rotating the sealing nut so as to adjust the resistance in the motion process of the valve core; after the sealing sleeve is slightly abraded, the sealing nut can be rotated to press down the sealing sleeve so as to make the sealing sleeve again play a sealing effect, so the service life of the engine oil control valve is prolonged, and the frequency for replacing the engine oil control valve is reduced; the sealing sleeve can just be replaced even after being abraded seriously; in comparison with the engine oil control valve, which is replaced directly, of the prior art, the automobile engine oil control valve disclosed by the invention is lower in replacement cost.