12results about How to "Increase contact force" patented technology

The utility model discloses an earth excavation foundation pit protection device capable of being positioned and supported, and relates to the technical field of foundation pit protection devices, the earth excavation foundation pit protection device comprises a protection plate, fixed ground inserts, insertion blocks and splicing blocks, the fixed ground inserts are welded on the two sides of the bottom end of the protection plate, the two insertion blocks are fixed on one side of the protection plate, and the splicing blocks are fixed on the other side of the protection plate. And two splicing blocks are fixed on the other side of the protection plate. The adjusting rod is screwed to drive the moving plate to move horizontally, on one hand, the adjusting rod can extend out of the protection plate conveniently, so that the adjusting rod can be inserted into soil around a foundation pit to increase the contact force between the protection plate and the foundation pit, and on the other hand, the moving rod descends under the action of the push block and the sliding block, so that the foundation pit is protected. And thus, the descending block pushes the moving block to do horizontal movement, then the fixing rod can stretch out of the interior of the fixing ground insert conveniently, the soil grabbing capacity of the fixing ground insert is improved, and then the stability of the protection plate during use is improved.

This invention relates to the field of agricultural machinery technology and discloses a mechanism for adjusting the speed of a star wheel. The mechanism includes a steel frame with star wheel shafts evenly distributed from bottom to top. Star wheel bodies are evenly fitted onto the star wheel shafts along their axial direction. Sprockets and chains are provided between adjacent star wheel shafts. A hydraulic motor is mounted on the outside of the steel frame. The mechanism also includes a centrifugal wheel, with its main body fixed to one end of the star wheel shaft. A radial groove is formed on the centrifugal wheel, and a centrifugal counterweight and a cam are connected within the groove via a first serpentine spring. The main body is connected to one end of the star wheel shaft via a bearing, and a first torsion spring is provided between its outer wall and the star wheel shaft. A connecting arm is provided between the cam and the centrifugal counterweight. The mechanism utilizes a hydraulic motor to independently drive the star wheel, achieving stepless speed regulation. Through the triple synergistic effect of centrifugal force adaptive clamping force adjustment, automatic jamming clearance, and eccentric linkage vibration unblocking, it effectively prevents the star wheel body from jamming and corn kernel damage, resulting in a high peeling rate, low kernel loss rate, and stable operation.

The breathing machine comprises a main machine and a humidifying tank, the main machine is provided with an inserting base, the humidifying tank is provided with an inserting section, the inserting section can be in inserting fit with the inserting base in the first direction and can be separated from the inserting base in the second direction opposite to the first direction, and the inserting section is provided with an air outlet adapter pipe; the bayonet socket is provided with a receding groove extending in the first direction, so that when the humidifying tank is matched with the main machine in an inserted mode, the air outlet adapter pipe can enter the receding groove in the first direction. In the process of assembling and disassembling the humidifying tank, the protruding air outlet adapter tube does not need to be disassembled, and the humidifying tank inserted with the air outlet adapter tube can be integrally inserted into the bayonet socket, so that the assembling and disassembling steps of the humidifying tank are simplified, and the disassembling step of the air outlet adapter tube in the process of assembling and disassembling the humidifying tank is omitted. In addition, the risk that internal water leaks from the air outlet due to shaking of the humidifying tank is avoided, the cleaning burden of a user is reduced, and the use experience is improved.

The utility model relates to the technical field of surveying poles, and discloses a wind-disturbance-resistant engineering surveying pole fixing device which comprises a pole body, a base and a fixing assembly, assembling cylinders are distributed on the periphery of the base, conical heads are arranged at the bottoms of the cylinders and can be conveniently inserted into soil, and cones, assembling rollers and reset springs are arranged in the cylinders. The elliptical seat sleeves the surface of the assembly roller and can extrude the cone to extend out of the communicating window to be inserted into soil during rotation, so that multiple supporting points are formed; and the reset spring can reset the cone during disassembly. During installation, the assembling cylinder is connected with the base through external threads, after the assembling cylinder is inserted into soil, the connecting base is rotated through a right-angle wrench to drive the assembling roller, and the oval base extrudes the cone to extend out for fixing; and the wrench is reversely rotated to withdraw the cone during disassembly, and operation is convenient. The device is in multi-point contact with soil through the cone, the contact area and the vertical contact force are increased, the device can be stably fixed without deep insertion in soft geology, and the wind resistance is remarkably improved.

The application discloses a pipeline inner circumference cleaning robot, and cleaning device comprises front end cleaning device and upper cleaning device, the front end cleaning device comprises front shovel, left shovel and right shovel, the front shovel is connected at the front end of the robot frame body and is pushed to walk and moves up and down, the left shovel and the right shovel surround the center point fixed on the front shovel, and are symmetrically distributed, and are simultaneously rotated and unfolded along the circular guide rail on the front shovel; the upper cleaning device comprises lifting platform, upper shovel and rotating mechanism, the lifting platform is connected above the robot frame body, the lower end of the upper shovel is provided with angle adjusting device, and the rotating point of the guide rail is arranged at the outer edge of the bottom, the upper shovel is installed on the lifting platform through the rotating mechanism, and the lifting platform, the rotating mechanism and the angle adjusting device are cooperated to make the upper shovel reach the required height and angle; the front end cleaning device and the upper cleaning device are adjusted to the appropriate positions according to the actual conditions.

The utility model provides a human body detection device, which comprises a detection main body and a mounting part, and the mounting part is connected to the detection main body. Wherein the mounting part comprises a first side wall, an abutting structure and at least two elastic arms, and the abutting structure protrudes out of the first side wall; the elastic arm extends out based on the first side wall, and the elastic arm is configured to be an elastic sheet. The human body detection device provided by the utility model is simple and convenient in installation process and is safer.

The utility model discloses a POS machine base connecting device capable of adjusting adsorption force and POS equipment, and the scheme is skillfully characterized in that a first part and a second part are arranged on a POS machine and a POS machine base, and the contact acting force of the POS machine base on the POS machine is improved by utilizing the characteristic that the first part and the second part have magnetic attraction acting force, so that when the POS machine is arranged in an accommodating part of the POS machine base, the contact acting force of the POS machine base on the POS machine is not influenced by the magnetic attraction acting force of the first part and the second part. The first component and the second component can relatively generate auxiliary acting force to improve the placement stability of the POS machine, the moving mechanism arranged in the base of the POS machine is connected with the second component, the position of the second component is switched through the moving mechanism, and the first component and the second component are in a first state and a second state which are opposite or staggered. Therefore, the contact acting force between the POS machine and the POS machine base is convenient to adjust, the POS machine can be flexibly taken and fixed conveniently, and the scene of free taking use and the scene of fixed use can be considered.

The application discloses a multi-angle welding device for steel plate processing, and relates to the field of metal welding equipment. The outer side of a bearing welding base body is provided with a hydraulic driving part, the output end of the hydraulic driving part is connected with a bearing butt joint assembly, and the upper end of the bearing butt joint assembly is used for placing a steel plate workpiece to be welded. The multi-angle welding device for steel plate processing is independently and synchronously driven to rotate the steel plate placed by the bearing butt joint assembly around the same rotary axis. When the hydraulic driving part pushes the corresponding steel plate upward to make the steel plate angularly move, the rotation angle of the steel plate and the stroke of the driving rod are in linear relationship. An operator can quickly calculate the extension amount of the driving rod according to the required included angle, and the repeated trial is not needed. The symmetrical adjustment mode makes the angle adjustment of the two steel plates not interfere with each other, and the adjustment process is stable and continuous. The adjustment can be realized in the range of 0-180 degrees, and the stable angular welding stability of the two groups of steel plates in angular contact can be ensured.

The invention discloses a robot grinding and polishing constant force control method and system based on neural network force compensation. The method comprises the following steps: constructing a neural network prediction model with a fault tolerance mechanism, and establishing mapping between a robot end pose and a gravity interference force; performing grouping compensation on the predicted gravity interference component through a weight grouping collaborative scaling principle, and extracting a net grinding and polishing contact force signal; rolling optimization is carried out based on the model prediction controller, and an optimal tail end pose adjustment instruction is solved; performing on-line fine adjustment on prediction model parameters by using a neural network prediction deviation; an intelligent compensation signal is generated in combination with a fuzzy logic compensator, and feedforward superposition and feedback adjustment are achieved; and finally, generating an auxiliary pose adjustment instruction through a self-adaptive impedance control model, and fusing the auxiliary pose adjustment instruction with the optimal instruction to form a final control instruction. According to the method, the influence of gravity interference, model uncertainty and environment change is effectively overcome, and high-precision and high-robustness constant-force grinding and polishing control is realized.

The application discloses a conformal bidirectional strain sensor and conductive circuit on a curved structure and an integrated manufacturing method thereof, which comprises a transfer medium layer adhered to a surface to be measured, a strain sensing grid with multi-walled carbon nanotubes adhered to the upper surface of the transfer medium layer, and a conductive circuit with a microstructure array of micro-pillar hole structures arranged in the transfer medium layer; the strain sensing grid is provided with fine and dense cracks to sense strain, and the conductive circuit is covered with a packaging layer material; in the preparation, a template is prepared and surface hydrophilic and hydrophobic treatment is performed first, then strain sensing functional ink filling is performed, then the strain sensing grid is pre-stretched to generate micro-cracks, then multi-conductive functional material composite filling is performed in the conductive circuit area, then in-situ transfer printing of the sensing and conductive integrated structure is performed, and finally the packaging layer is covered; the application realizes high-precision sensing measurement and effective transmission of electrical information; the processing of the strain sensing area and the conductive circuit area is simple, and high-efficiency and low-cost manufacturing is realized.

This invention belongs to the field of sheet metal processing technology, specifically relating to a flexible progressive forming method for large sheet metal parts based on multi-robot collaboration. The method includes the following steps: dividing the three-dimensional model of the target component into several sub-regions based on its geometric features, and determining the tool head and forming process parameters for each robot in each sub-region; performing trajectory planning and motion synchronization for each robot; performing dynamic collision detection based on the real-time position feedback of each robot, and optimizing the trajectory through coordinated planning of speed and trajectory; and dynamically adjusting the forming process parameters of each robot based on the real-time force feedback of each tool head using a force / position hybrid control algorithm. Compared with existing technologies, this invention solves the problems of limited forming range and low efficiency in existing technologies. This solution achieves both expanded forming range and ensures consistent forming accuracy and quality of the component.

The utility model discloses a special multi-core pay-off device for electrical cabling equipment, and particularly relates to the field of cable production, the special multi-core pay-off device comprises a main rotating shaft, the outer side of the main rotating shaft is fixedly connected with a stranding cage, a group of tension mechanisms are arranged in the stranding cage, and the tension mechanisms comprise connecting shafts which are fixedly connected with the left side and the right side in the stranding cage respectively. The initial end of the wire core on the wire coil bypasses the surface of the guide roller and is combined at one position, and then the end part of the wire core is fixed on the traction device; and then the stranding cage rotates along with the main rotating shaft, and the wire core on the wire coil rack begins to be released under the action of self gravity and wire releasing tension. A plurality of wire cores are driven to do circular motion around a central axis, so that the wire cores are twisted into a cable; in the cable forming process, the number of the wire coils on the wire coil shaft can be controlled according to the core number of the produced cable, and one stranding cage can be used for stranding the core cable at most at the same time. And the effect of producing the cable with more than 19 wire cores can be achieved.