364 results about "Force direction" patented technology

The invention discloses a roller screw external thread grinding force measuring method. The method comprises the steps that a to-be-measured screw is installed on an external thread grinding machine tool in the mode that the to-be-measured screw is clamped by tips at the two ends of the machine tool; the two mechanical sensors are installed at the center position right facing the lead screw to be measured and face the normal grinding force direction and the tangential grinding force direction respectively; a to-be-measured lead screw clamped by double tips is regarded as a simply supported beam structure of which one end is fixed and hinged and the other end is movable and hinged, a mechanical sensor is regarded as an elastic support, a mechanical model is established, and the relationship among the measurement result of the mechanical sensor, an actual method and tangential grinding force at different grinding positions is obtained; and according to the measurement result of the mechanical sensor, the actual method and the tangential grinding force are obtained by utilizing the relation between the measurement result of the mechanical sensor at different grinding positions and the actual method and the tangential grinding force, and the actual grinding force is obtained after vector superposition. The device has the characteristics of clear and definite measurement principle, accurate and reliable measurement result, simple structure and convenience in assembly.

The application provides a robot for detecting a cable of a cable-stayed bridge, comprising a robot body, a guide wheel mechanism arranged on an inner wall of the robot body, two steering control mechanisms arranged symmetrically on an outer wall of the robot body, and a ducted fan connected to the steering control mechanisms and used for controlling a thrust direction of the ducted fan.

The invention provides a force direction feedback system and method of pneumatic pressure. The system generates a first oscillation signal changing along with air pressure and a second oscillation signal with fixed frequency through a signal conversion module; and the counter counts the cycles of the two paths of oscillation signals. The back noise calibration module samples environment back noise by using a second oscillation signal in a frequency division manner, and eliminates back noise interference in a force count value through a subtractor, so that the problem of detection deviation caused by environment air pressure fluctuation is solved; and the dual-threshold comparison module screens the difference signal through a back noise threshold and an anti-shake threshold, generates a force conversion value, and avoids error output caused by slight fluctuation and shake. The differential operation module processes the force conversion value in combination with the second oscillation signal, the accurate pneumatic force value is output through signal correlation, the pneumatic direction can be distinguished by means of comparison with the fixed reference, and finally accurate and stable feedback of the pneumatic pressure force and direction is achieved.

The utility model discloses a torsion bar elastic restraint spherical steel support which comprises a longitudinal spherical steel support, the longitudinal spherical steel support comprises a fixed support bottom plate located at the bottom, a support bottom basin is arranged on the support bottom plate in a sliding mode, a torsion bar assembly for restraining and limiting is arranged on the support bottom plate, and the longitudinal spherical steel support comprises a longitudinal spherical steel support body. The torsion bar assemblies are arranged on the two opposite side faces of the support bottom basin. Horizontal movement of the pin shaft end of the torsion arm is restrained through the side plate slide way, rigid rotation of the torsion arm is achieved when the support moves, and the torsion arm rotates to drive the torsion rod spring to twist; a connecting rod assembly is removed, so that the structure is more compact; and the direction of external force is parallel to the axis of the fixing bolt, so that the stress of the bolt is optimized, and the bridge support is more suitable for the application scene of the bridge support.

The application provides a distance adjusting device for a rolling mill, which comprises a support frame, a support structure, an adjusting structure, a locking structure and two support seats. The support frame comprises a first frame, the support structure is installed inside the first frame, and the two support seats are slidingly installed on the support structure. The adjusting structure comprises a driving mechanism and a plurality of block groups, and the block groups are respectively clamped between the upper support seat and the top of the first frame, between the two support seats, and between the lower support seat and the bottom of the first frame. The driving mechanism is used to drive the block groups to move, the distance between the two support seats is changed by adjusting the embedding depth, and the clamping support of the top and bottom of the support seat is maintained. The locking structure is used to lock the adjusting structure. The position of the support seat is changed by embedding and pushing, so as to adjust the distance between the rolling mills, realize the effect of automatic distance adjustment, improve the efficiency and adjustment accuracy, and maintain the support of the main stress direction of the support seat by the embedding and pushing part.

The invention relates to a novel longitudinal and transverse rotating magnetic conductive attraction expansion device. The invention relates to a novel longitudinal and transverse magnetic conductive attraction expansion device, which comprises a magnetic base body, a first magnetic base, a second magnetic base, a first connecting rod, a second connecting rod and a third connecting rod, the two bases are arranged below the magnetic base body, and the opening and closing directions of the two bases are perpendicular to the magnetic attraction force directions of the first magnetic base and the second magnetic base; the first translation assembly comprises two push rods arranged at an included angle, one ends of the two push rods are rotationally connected to the first base at the same time, and the other ends of the two push rods are rotationally connected to the first magnetic base and the second magnetic base respectively; the second translation assembly comprises two push rods arranged at an included angle, one ends of the two push rods are rotationally connected to the second base simultaneously, and the other ends are rotationally connected to the first magnetic base and the second magnetic base respectively. According to the novel longitudinal and transverse rotating magnetic attraction expansion device, traditional repulsive force is replaced by magnetic attraction force, and the problems that the distance between magnets is increased and the magnetic force is sharply reduced along with expansion of a dental arch of a traditional expansion device can be solved.

This utility model relates to the field of mechanical engineering, and more particularly to a spring connection structure with adaptive elastic deformation. This utility model provides a spring connection structure with adaptive elastic deformation that can adaptively rotate at multiple angles according to the non-axial external force applied to the telescopic spring, reducing the additional stress generated by the torsion or bending of the telescopic spring. The adaptive elastic deformation spring connection structure includes a first mounting base, a connecting rod, and a second mounting base, etc. The second mounting base is located above the first mounting base, and the connecting rod is connected to the middle of both the first and second mounting bases. This utility model uses a rotating block to rotate on the connecting rod, and the connecting block rotates on the rotating block, causing the connecting frame to rotate. This keeps the axial direction of the telescopic spring as consistent as possible with the direction of the force, achieving the effect of adaptive multi-angle rotation according to the non-axial external force applied to the telescopic spring, reducing the additional stress generated by the torsion or bending of the telescopic spring.

The invention relates to a forging press, in particular a free-form forging press, for forging a tubular workpiece (1), the forging press comprising: - a press frame, - a mandrel (2) which is arranged in or on the press frame and on which the workpiece (1) to be deformed is positioned or is to be positioned, - wherein the mandrel (2) is conical at least in some regions and has at least one contact surface (3) inclined with respect to the mandrel axis (D), - a forging saddle (4) which can be moved in a main pressing-force direction (R) towards the mandrel (2) and the workpiece (1) positioned on the mandrel (2), and by means of which a pressing force (Fp) oriented in the main pressing-force direction (R) can be applied to the workpiece, wherein, due to the inclined contact surface (3) of the mandrel (2), the pressing force (Fp) results in a transverse force (Fq) oriented transversely to the main pressing-force direction (R). The press is characterised in that the forging saddle (4) has a shoulder (6) comprising a support surface (7) which is preferably oriented parallel to the main pressing-force direction and against which the mandrel (2) can be supported such that the transverse force (Fq) is transmitted into the shoulder (6) and thereby absorbed by the forging saddle (4).

The invention belongs to the technical field of scraper conveyor speed reducer auxiliary maintenance fixing devices, and particularly discloses a scraper conveyor speed reducer maintenance fixing support which comprises a device body. A jack is arranged at the rear end of the device body, and an assembly type dismantling mechanism is arranged between the device body and the jack. Through the design of the assembly type dismounting mechanism, the function of assembling the jack so as to provide an acting point is achieved, and the problems that an existing device is not provided with an assembly capable of transversely supporting and fixing the jack, when a coupling wheel needs to be transversely dismounted, the jack needs to be transversely placed in the air, and the assembly is inconvenient are solved. The problem that the jack is in a suspended state and cannot provide an effective acting point due to the fact that the jack needs to be jacked on the shaft through a jacking disc of the jack and the acting force direction of the jack and the central axis of the coupling are on the same straight line, namely the acting force direction is also transverse, is solved, and convenience is improved.

The invention discloses an accurate measurement device and method based on water tunnel flow field resistance, and relates to the technical field of flow field medium measurement. Comprising a working section and a test board. The working section is internally provided with a testing assembly for testing the flow field medium resistance of the testing plate; the test assembly comprises a fixed plate; sensor fixing seats are symmetrically and fixedly connected to the fixing plate, force sensors are fixedly connected to the sensor fixing seats, and the force sensors are used for detecting the force values of a flow field medium in the working section acting on the X-axis direction and the Y-axis direction of the testing plate; the force sensors are fixedly connected with connecting plates. An adjusting assembly used for adjusting the height of the testing plate is arranged between the testing plate and the connecting plates. The force measuring directions of the Y-axis directions of the adjacent force sensors are opposite, and the force value output by the S-shaped force sensor is the resultant force of the X-axis direction and the Y-axis direction; the horizontal resistance of a flow field medium borne by the test plate can be accurately measured, meanwhile, the pressure difference interference force in the vertical direction is effectively counteracted, and the resistance test precision and stability are improved.

A film bubble flattening and clamping mechanism of film blowing equipment comprises a herringbone clamping plate and a traction clamping roller, the traction clamping roller comprises a fixed roller and a movable roller, and a movable roller support is arranged at the longitudinal end of the movable roller; horizontal cylinders for driving the movable roller support to horizontally move relative to the fixed roller are respectively arranged on the front side and the rear side of the movable roller in a matched manner; the lower half section of the herringbone clamping plate, the movable roller, the fixed roller and the horizontal air cylinder are intensively arranged in a cuboid-shaped mounting box body; the front side and the rear side of the movable roller are respectively provided with a vertical plate, and a movable roller support at the end part of each side of the movable roller is arranged in the middle of the vertical plate; the horizontal position of the horizontal cylinder and the fixed roller are located on the same side of the movable roller, and the contraction direction of a piston rod of the horizontal cylinder is the same as the pressure direction of the movable roller on the fixed roller when the movable roller clamps the film. The case provided by the utility model is small in transverse size and small in occupied space.

The invention relates to the technical field of sucker rods, and provides a high-pressure-resistant sucker rod with a locking structure, the high-pressure-resistant sucker rod comprises a connecting assembly and sucker rod assemblies, the sucker rod assemblies are fixedly mounted at the upper end and the lower end of the connecting assembly, and the connecting assembly comprises a rotating mechanism; elastic blocking assemblies are fixedly connected to the upper and lower ends of the periphery of the middle of the rotating mechanism, connecting mechanisms are rotatably connected to the peripheries of the upper and lower ends of the rotating mechanism, impact assemblies are fixedly connected to the sides, close to the middle of the rotating mechanism, of the connecting mechanisms, and adjusting assemblies are arranged on one sides of the impact assemblies. The balls II in the connecting seats at the upper end and the lower end rotate on the peripheries of the upper end and the lower end of the rotating seat, so that the connecting seats at the upper end and the lower end can easily rotate on the periphery of the rotating seat, and the twisting force of the sucker rod assembly is released; the situation that the sucker rod assembly is twisted due to the change of the direction of force acting on the sucker rod assembly in the oil pumping process, and connection between the sucker rod assembly and the connecting assembly is loosened is avoided.

The invention discloses a fixed wing patrol aircraft flight attitude control method, and belongs to the technical field of unmanned aerial vehicles. Aiming at the technical contradiction that high-speed flight maneuverability and weapon shooting stability cannot be compatible, the method achieves breakthrough through the following innovative schemes that a four-wing propeller collaborative framework is designed, and each propeller is provided with a horizontal linear driver to achieve front-back telescopic displacement in the axial direction of a fuselage; in the horizontal flight stage, based on the feedback of a gyro stabilizer, pitching / rolling double-axis attitude accurate control is realized through the cooperative adjustment of propeller position stretching and rotation speed difference; triggering a layered compensation strategy by an ignition event, and synchronously adjusting the horizontal position and the rotating speed of a propeller according to the recoil force direction; and the tail vane intervenes in fine adjustment only when the yaw is out of tolerance. By combining the seamless conversion design of the vertical take-off and landing stage, the three technical problems of height loss without initial-speed deployment, low aerodynamic efficiency of high-speed flight and insufficient shooting precision are solved.

The application relates to a semiconductor laser sintering clamp fastening device and a use method thereof, and belongs to the technical field of semiconductor laser manufacturing. The device comprises a sintering clamp, a C-shaped fixing base, a turbine, a worm, a camshaft and a fixing plate. The lower end of the C-shaped fixing base is sleeved with the sintering clamp in a sliding mode, one side of the inside of the C-shaped fixing base is provided with the camshaft, the two ends of the camshaft are slidably connected to the C-shaped fixing base through bearings, the one end of the camshaft is externally connected with the turbine, the turbine is connected with the worm, and the worm is fixedly arranged outside the C-shaped fixing base through the fixing plate. The application designs a novel fastening method, the sintering clamp is fastened by adopting the structure of the cam above the fastening structural member, the height difference during the rotation of the cam can generate a downward force to fix the sintering clamp, the axial rotation friction force direction of the cam is parallel to the direction of the bar light emitting surface, the bar is not deviated, and the phenomenon that one side of the sintered laser is shrunk and the other side is excessively protruded is avoided.

The utility model discloses a wind power bolt stress detection device, and relates to the technical field of bolt stress detection. The device comprises a base, a fan-shaped frame is arranged above the base, a moving block is arranged between the inner walls of the two sides of the arc-shaped edge of the fan-shaped frame in a sliding fit mode, a chest expander is installed on the moving block, and an angle adjusting assembly is arranged between the moving block and the fan-shaped frame. An adjusting frame located on one side of the right-angle longitudinal edge of the fan-shaped frame is arranged on the upper side of the base in a sliding fit mode, and a bolt connecting block is installed on the adjusting frame. According to the utility model, through the unique angle adjusting assembly, by using a transmission structure of a worm, a worm gear and a gear, the angle adjustment can be easily realized by rotating an adjusting hand wheel, the detection angle can be conveniently adjusted, the stress detection of the wind power bolt in different stress directions is realized, the comprehensiveness and accuracy of the detection are greatly improved, and the detection efficiency is improved. And the problem that potential stress is missed due to single-angle detection is avoided.

The utility model relates to a valve opening and closing tool, in particular to an auxiliary C-shaped wrench for valve opening and closing, which comprises a wrench body provided with a holding portion and a clamping portion. The clamping part comprises a first C-shaped clamping piece and a second C-shaped clamping piece, the opening directions of the first C-shaped clamping piece and the second C-shaped clamping piece are perpendicular to each other, the opening of the first C-shaped clamping piece is clamped along the upper portion or the lower portion of the valve hand wheel, and the second C-shaped clamping piece is clamped along the outer ring of the valve hand wheel and abuts against the valve hand wheel. When the first C-shaped clamping piece and the second C-shaped clamping piece are clamped on the valve hand wheel, the first C-shaped clamping piece and the second C-shaped clamping piece abut against the inner side and the outer side of the valve hand wheel respectively, two supporting points with opposite acting force directions are formed, the valve hand wheel can be driven to rotate when the holding part rotates, and therefore the effect of rapidly opening and closing the valve is achieved. And a lever is formed by combining the length of the holding part, so that the labor-saving effect is achieved.

The utility model relates to the technical field of mechanical hoisting equipment, in particular to a lifting lug for hoisting a generator set cabin, which comprises a cushion, the lower end of the cushion is fixedly connected with a lifting lug piece, the upper end of the lifting lug piece is provided with four mounting holes, the four mounting holes are distributed in a rectangular shape, the left end and the right end of the lifting lug piece are provided with insertion holes, and the insertion holes are communicated with the lifting lug piece. A rotating device is jointly mounted between the left end and the right end of the lifting lug piece in a penetrating manner; the rotating device comprises a hexagon nut, the left portion and the right portion of the outer surface of the hexagon nut are each sleeved with a limiting ring, and the left portion and the right portion of the outer surface of the hexagon nut are each in threaded connection with a double-end threaded rod. According to the lifting lug for lifting the engine room of the generator set, the rotating device and the connecting assembly are arranged, so that the stress direction of the rope is changed in a self-adaptive manner, local stress concentration is effectively avoided, and the safety and the stability of lifting operation are greatly enhanced.

The control system comprises a ball valve, the electric push rod and a curved swing arm, the two ends of the curved swing arm are connected with the electric push rod and a ball valve element respectively, and the electric push rod stretches out and draws back to drive the curved swing arm to pull the ball valve; the acting force direction of the electric push rod on the curved swing arm is associated with the telescopic degree of the electric push rod; a strain sensor is arranged on the curved swing arm, and the measured value of the strain sensor is associated with the curvature change amplitude of the curved swing arm. The curved swing arm is composed of a first connecting handle part and a second connecting handle part which are in curved connection, the first connecting handle part is connected with the valve element, and the second connecting handle part is connected with the electric push rod; the included angle between the electric push rod and the second connecting handle part is a force application included angle, and the force application included angle is in negative correlation with the extension degree of the electric push rod. The strain sensor is arranged on the curved swing arm, and whether the ball valve is jammed or not is judged by detecting the curvature change of the curved swing arm.

To provide a hydrostatic bearing spindle with improved load-bearing characteristics. [Solution] The hydrostatic bearing spindle 1 comprises a rotating shaft 10, a radial bearing sleeve 21, a thrust bearing sleeve 50, and a magnet 55. The rotating shaft 10 includes a shaft portion 11 extending in the thrust direction T and a thrust plate 12 extending from the shaft portion 11 in the radial direction R. The thrust bearing sleeve 50 and the magnet 55 are positioned in the thrust direction T on the side opposite to the radial bearing sleeve 21 relative to the thrust plate 12.

The invention discloses an injection molding machine ejector rod coupling structure, and relates to the technical field of injection molding machine ejector rods, the injection molding machine ejector rod coupling structure comprises a first connecting piece, a second connecting piece and a lantern ring nut, one end of the first connecting piece is connected with an ejection assembly of an injection molding machine, and one end of the second connecting piece is tightly attached to the other end of the first connecting piece; the other end of the second connecting piece is connected with a mold top plate; the lantern ring nuts are arranged on the two end faces, tightly attached to the first connecting piece, of the second connecting piece in a sleeving mode. The deviation tolerance of the center of the injection molding machine ejector rod and the center of the mold ejector plate can be increased, it can be ensured that the ejector rod is consistent with the force transmission direction, and the ejector rod is effectively prevented from being broken due to the incorrect stress direction; meanwhile, the ejector rod connector is independently designed, the size is reduced, wide compatibility of the ejector rod connector can be achieved, different connectors are allowed to be replaced under the condition that the whole ejector rod is not dismantled, and therefore the replacement time is greatly shortened, and the cost generated by replacing parts is reduced.

A cartridge (20, 200, 300, 400, 500, 600, 700, 800) includes a connection structure (120, 220, 320, 484, 420, 520, 620, 720, 820) connected to a rotating shaft (110, 210, 310, 410, 510, 610, 710, 810) of the cartridge, the connection structure including a force receiving structure (120, 220, 222, 224, 226, 320, 322, 326, 482, 484, 420, 422, 520, 620, 720, 820) to receive a first force, and a force application mechanism (550, 650, 750, 850), disposed in the cartridge, to apply a second force opposite in direction to the first force. The rotating shaft is driven based on the first force and the second force.

An aircraft structure dynamic loading testing device, including a nozzle, an attachment mechanism with a first portion attached to the nozzle such that a nozzle force direction is constrained at a set orientation and a second portion for attaching to the aircraft structure and configured to be constrained at a given orientation with respect to the aircraft structure, and a length of conduit. In use, fluid is supplied along the length of conduit to the nozzle and ejected from the nozzle such that the nozzle exerts a dynamic force on the aircraft structure in the direction of the nozzle force direction. A dynamic loading testing device, a kit of parts and methods of dynamic load testing of a structure are disclosed.

The invention relates to the technical field of to-be-detected lifting appliance detection, in particular to a lifting appliance load detection device and method.The lifting appliance load detection device comprises a base, two supporting columns are fixedly connected to the two sides of the base, a cross beam is fixedly connected to the tops of the two supporting columns, and a hydraulic tension applying device is arranged on the cross beam and used for lifting a to-be-detected lifting appliance and applying to-be-detected tension; and the hydraulic tension applying device is connected with the to-be-detected lifting appliance through a tension transmission rope I. According to the invention, the adjusting assembly is arranged on the base, so that during detection, only four lifting points of the to-be-detected lifting appliance need to be correspondingly connected to the tension transmission lifting rings of the four adjusting rods, and after the hydraulic tension applying device is started, the stress direction of the lifting points is automatically adjusted; the whole process does not need manual operation, and the adjusting assembly can adapt to different sizes of frame-shaped to-be-detected lifting appliances through a dual adjusting structure of rotation of the adjusting rod and sliding of the tension transmission lifting ring, and does not need to independently design a special tool for a specific to-be-detected lifting appliance, so that the input cost is reduced, the application range is widened, and the detection efficiency is improved.

The application discloses a free-turning curved-surface adaptive magnetic adsorption wall-climbing robot and a control method, relates to the field of wall-climbing robots, and comprises a frame unit, a front driving mechanism and a rear driving mechanism. The front driving mechanism is used for driving the robot to move in a first direction. The rear driving mechanism is used for driving the robot to move in a second direction. The first direction and the second direction are perpendicular to each other in a horizontal plane. The rear driving mechanism comprises a rear driving motor, an omnidirectional wheel assembly, a central shaft and a suspension-type permanent magnet unit. The suspension-type permanent magnet unit is passively rotatably sleeved on the central shaft through a bearing and can rotate around the central shaft with the change of the curvature of a magnetic guide surface, so that the magnetic force direction always points to the normal direction of a wall surface. The omnidirectional wheel assembly is fixedly connected with the central shaft in a concentric mode. The application can realize in-situ turning without setting an independent turning motor. The rear driving mechanism integrates the functions of turning driving and curved-surface self-adaptive adsorption. The application has a compact structure, can adapt to complex wall surfaces such as curved surfaces, and has stable adsorption and strong passability.

This application describes systems, devices, computer readable media, and methods for the function and operation of robotic carts. A robotic cart may include a base component configured for the receipt of a payload, a battery unit, and a mobility apparatus. The robotic cart may include a handlebar component coupled with the base component. The handlebar unit may include a sensor unit configured to transmit a hand detection message when the handlebar unit is grasped by one or more hands and to transmit a force direction message indicating a two-dimensional direction associated with a directional force applied by one or more hands. The robotic cart may be configured to map the area around it and to autonomously move the robotic cart along a path to perform a task.

The application discloses a hanging structure and a ducted air conditioner, which comprises a shell, a plurality of mounting openings are arranged on the side plate of the shell, a plurality of hanging rods are arranged, one end of each of the hanging rods is fixed to a wall, and the other end of each of the hanging rods is provided with a connecting assembly, the connecting assembly is fixed to the side plate of the shell through the mounting openings. According to the application, the mounting openings are arranged on the side plate of the shell, the gravity and the tension of the side plate are on the same straight line, the force is parallel to the plane of the side plate, the connecting assembly is fixed to the side plate through the mounting openings of the side plate and is connected with the hanging rods, and thus the hanging is realized, and the technical problem that the connecting side plate or the upper cover plate is deformed due to the force direction in the hanging process of the traditional hanging structure is solved.

The utility model relates to the field of cosmetic containers, in particular to a replaceable cosmetic container and a non-collinear sealing structure. A non-collinear sealing structure of a replaceable cosmetic container comprises a first locking mechanism and a second locking mechanism, an emulsion conveying path of an emulsion conveying mechanism serves as an X axis, and a straight line on a plane perpendicular to the X axis serves as a Y axis; the direction of the unlocking force of the first locking mechanism and the direction of the unlocking force of the second locking mechanism are selected from one of three direction types of movement along the X axis, rotation around the X axis and rotation around the Y axis, and the direction types of the unlocking force of the first locking mechanism and the direction types of the unlocking force of the second locking mechanism are different. The non-collinear sealing structure is provided with the two locking mechanisms with different acting force direction types, and the two locking mechanisms are respectively applied between the bottle cap and the emulsion conveying mechanism and between the emulsion conveying mechanism and the outer bottle; when the bottle cap is opened in daily use, the emulsion conveying mechanism cannot be dismounted by mistake synchronously, the use reliability is improved, and the use experience feeling of consumers is improved.

Embodiments of the present application disclose a kind of control method, device and ship control system of ship.The method comprises: obtaining the current heading of the ship, target heading, wind force, wind direction, flow force and flow direction;According to the current heading, the wind force, the wind direction, the flow force and the flow direction, determine total yaw torque;According to the difference of the current heading and the target heading, determine feedback torque;According to the total yaw torque and the feedback torque, determine rudder direction angle, and according to the rudder direction angle, control the ship to adjust to the target heading.The technical scheme provided by the embodiments of the present application can ensure that the ship travels according to the target heading, reduce the risk of deviation of the ship, improve the accuracy and stability of ship navigation, and also do not need manual control, reduce labor cost.

An exercise device comprises a base, two resistance arms and a resistance mechanism, the two resistance arms are rotationally connected with the base and can be oppositely opened and closed, the resistance mechanism provides resistance for the two resistance arms to be oppositely closed, and the exercise device is characterized in that the resistance mechanism comprises a sliding block and a resistance part, the sliding block is arranged on the base in a vertically movable mode, and the resistance part is arranged on the sliding block; the resistance part is used for providing resistance for preventing the sliding block from moving upwards, the resistance arms comprise first driving parts, the sliding block is provided with second driving parts abutting against the first driving parts, and when the two resistance arms rotate in a relatively closed mode, the first driving parts and the second driving parts are matched to drive the sliding block to overcome the resistance of the resistance part to move upwards. Under the cooperation of the first driving part of the resisting arm and the second driving part of the sliding block, the sliding block is driven to overcome resistance to move upwards, the resistance is transmitted through the vertical movement of the sliding block, the resistance direction is consistent with the force exerting direction of the human body, force exerting in the human body exercising process is better met, and the better exercising effect is achieved.