567 results about "Ground contact" patented technology

The invention discloses a multi-view three-dimensional reconstruction driven cattle body size online measurement method, and relates to the technical field of animal husbandry three-dimensional measurement, and the method comprises the steps: extracting a ground reference plane, a segment elevation function, a guardrail reference line, a segment guardrail spacing, a periodic pitch and a hoof ground contact event, and generating a calibration opportunity score in combination with a pixel-level quality weight map; in the sliding window factor graph, jointly solving an external parameter rotation matrix, an external parameter translation vector and a global scale by taking the prior as a constraint, and outputting an uncertainty matrix; implementing hierarchical self-recovery according to the comprehensive health degree and the score, and replacing safe writing with double buffer atoms; carrying out weighted splicing under a unified measurement coordinate and carrying out profile robust measurement, forwards transmitting uncertainty to a body size layer and supporting individual multi-time column-passing convergence; the method is suitable for channel visibility interruption and structure variable scenes, and under the condition of uninterrupted release, measurement consistency is kept and auditable results are output.

Each receptacle contact includes a soldering part to be soldered to a connector mounting surface of a board, a fixed part to be fixed to a receptacle housing, and a spring part supported like a cantilever beam by the fixed part and elastically deformable in this recited order. The spring part includes a first contact part configured to come into contact with a plug connector. The plurality of receptacle contacts include a signal contact and a ground contact adjacent to each other. A spring part of the signal contacts and a spring part of the ground contact are elastically deformable independently of each other. The spring part of the ground contact further includes a second contact part that comes into contact with the ground plate when the connectors mate.

The invention discloses a horizontal steering wheel with a walking mechanism and a steering mechanism, and belongs to the technical field of steering wheels. Comprising a support assembly, a spring shock absorber is rotationally installed on the support assembly, a fixing frame is rotationally installed at one end of the spring shock absorber, and a wheel assembly is installed on the fixing frame; an upper connecting rod frame is rotationally installed on the support assembly and rotationally connected with the fixing frame, and a lower connecting rod frame is rotationally installed on the support assembly and rotationally connected with the fixing frame. The support assembly is provided with a driving assembly used for controlling the wheel assembly to steer. The upper connecting rod frame and the lower connecting rod frame form a parallelogram guide structure, and the upper connecting rod frame and the lower connecting rod frame swing synchronously in the damping process or under the heavy-load eccentric load working condition, so that tires are kept perpendicular to the ground all the time, the situation that the ground contact area is reduced due to inclination is avoided, it is guaranteed that contact pressure between the tires and the ground is evenly distributed, local abrasion is reduced, and the service life of the tires is prolonged. And meanwhile, the stability in the carrying process is improved.

An electrical connector includes: a substrate having plural holes; plural contacts mounted in the corresponding holes, the plural contacts including a first row of contacts arranged as a pair of signal contacts flanked by two ground contacts, a second row of contacts having four ground contacts on one side of the first row of contacts, and a third row of contacts having four ground contacts on another side, each contact including a body and an upper arm; and a coupling element interconnecting the two ground contacts of the first row to selected ground contacts of the second and third rows, wherein the upper arm of each of the plurality of contacts has a contacting convex facing upward, and the four ground contacts of the second row are connected side by side and the four ground contacts of the third row are connected side by side.

The utility model discloses a rubber crawler-type timber grab which comprises a machine body, the machine body is provided with a cab, a fence type container and a power system, floating wheels are arranged at the bottom of the machine body, and the floating wheels are wrapped with rubber crawlers. And the power system is connected with the unloading oil cylinder. The device is small in grounding specific pressure, does not need a supporting leg during operation, is provided with an operation room and a remote wireless remote control device, and is high in practicability and economical efficiency; the working efficiency is effectively improved, the environment is protected, and the grounding specific pressure is reduced.

The utility model discloses an outdoor charging pile relates to charging pile protection technical field, including the charging pile that is formed of charging pile main part, charging wire, charging head, charging head passes through charging wire and charging pile main part electric connection, the outside of charging wire is provided with protection subassembly, and the protection subassembly is used for providing support between charging wire and ground, avoids the ground friction of charging wire, the protection subassembly includes spiral support part, clamping unit, the spiral support part is sleeved in charging wire outside and is connected fixed with charging wire through clamping unit, and the separation of charging wire and ground is realized through the contact of spiral support part and ground. The utility model discloses setting up protection subassembly, through installing spiral support part in charging wire outside, when having the contact tendency of charging wire and ground, spiral support part and ground contact, make charging wire not contact ground, effectively avoid the damaged condition that the ground friction of charging wire leads to, further improve charging pile use safety.

The application provides a terrain recognition method, device and equipment for a legged robot and a medium. The method comprises the following steps: acquiring pose data collected by a body sensor of a target legged robot, and calculating state parameters of the target legged robot; inputting the pose data and the state parameters into a foot-ground contact force model to determine three-dimensional foot-ground contact force; generating a contact mask sequence representing a foot-end ground contact state of the target legged robot based on the three-dimensional foot-ground contact force, and segmenting the pose data to obtain a segmented pose data set; inputting the pose data set into a pre-trained terrain classification model to determine a confidence vector of the current ground under multiple terrain attributes, and determining a terrain category of the current ground according to multiple confidence vectors. Through the method and device, the autonomous adaptation capability and environmental perception reliability of the legged robot in complex terrain are significantly improved.

The utility model discloses a crawler chassis for weeding robot belongs to the technical field of robot, this crawler chassis includes mobile crawler, connecting beam, installation roof, lifting assembly and mobile sub -assembly, through setting up in lifting assembly's electric telescopic handle elongation and can make connecting cross board move down, and can lift two sides mobile crawler and leave the ground, and can adjust the interval between two sides mobile crawler more conveniently, through setting up in mobile sub -assembly's mobile wheel can make when adjusting the interval between two sides mobile crawler and ground contact, can follow mobile crawler and move while keeping the supporting force, reduce the friction with ground, through setting up in the drive motor rotation of adjusting component's rotation drive two -way screw rod, and can make two sides connection vertical board drive connecting beam and mobile crawler move simultaneously and move towards each other or opposite, realize the adjustment of mobile crawler interval.

This utility model relates to a daughter card structure, a plug-in connector, and a connector. The daughter card structure includes an insulating frame, a differential signal conductor, and a ground conductor. The signal conductor includes a signal contact, a signal crimping member, and a signal transmission section. The ground conductor includes a ground contact, a ground crimping member, and a ground transmission section. A torsion section is provided between the ground contact and the ground transmission section. The size of the torsion section is adapted to the thickness of the insulating frame. After being twisted by the torsion section, the ground transmission section connects to the first and second contact arms of the ground contact. Through the torsion of the torsion section, the first and second contact arms can respectively contact different sleeves of the mating connector, improving the electromagnetic shielding effect and signal transmission quality. The plug-in connector equipped with the above-mentioned daughter card structure has strong anti-interference ability and high signal quality. The signal of the connector composed of the above-mentioned plug-in connector has low crosstalk during transmission and has high stability and reliability.

[Problem] To provide a suspension control device that can improve the feeling of agility and the feeling of ground contact when turning while riding a saddle-type vehicle. [Solution] A suspension control device 1 controls variable damping force shock absorbers Df, Dr that can adjust the damping force and are interposed between a vehicle body B of a saddle-type vehicle M and a front wheel (vehicle wheel) Wf, and the vehicle body B and a rear wheel (front wheel) Wr, respectively. The suspension control device 1 comprises: a bank angle detection unit 2 that detects a bank angle θ, which is the angle of inclination of the vehicle body B in the left-right direction; a bank angular velocity detection unit 3 that detects a bank angular velocity ω of the vehicle body B; and a control unit 5 that controls the damping force of the variable damping force shock absorbers Df, Dr on the basis of the bank angle θ and the bank angular velocity ω.

The utility model relates to the field of leather products and shoemaking technology, especially a kind of high-performance microfiber leather base sports shoes leather, including base, waterproof function layer and wear-resistant coating, the top of base is provided with ventilative function layer, several ventilative micropores are evenly distributed on the upper end of ventilative function layer, waterproof function layer is covered on ventilative function layer, contact angle is not less than 120 °, wear-resistant coating is set to the side of sports shoes leather and ground contact, with anti-skid texture.The utility model relates to a kind of high-performance microfiber leather base sports shoes leather, by ventilative, waterproof, wear-resistant and anti-skid key performance is integrated in one body.Ventilative micropore is rectangular array distribution and aperture precision design, can efficiently discharge shoe in moisture, keep dry, inhibit bacteria breeding;Multi-layer waterproof layer is collocated with stable outer frame, waterproof is strict, and is not afraid of damp environment.Wear-resistant coating and anti-skid texture cooperate, wear-resistant at the same time grip ground force is strong, adapt to various sports scenes.

The utility model discloses a multidirectional wind-resistant stable electric power engineering wire rack, and relates to the technical field of wire racks, the multidirectional wind-resistant stable electric power engineering wire rack comprises a base and a wind-resistant assembly, the outer surface of the base is provided with an adjusting groove, the wind-resistant assembly used for angle adjustment is arranged on the side edge of the base, and the wind-resistant assembly comprises a stabilizing plate, a reinforcing hole, a fixing frame and a wind-resistant plate. Reinforcing holes are formed in the surface of the stabilizing plate, a fixing frame is installed at the upper end of the stabilizing plate, a wind-resistant plate is installed on the inner side of the fixing frame, and a rotating table is installed in the top of the base. According to the multidirectional wind-resistant stable electric wire rack for the electric power engineering, the ground contact area is increased on the side edge of the base through the stabilizing plates, so that the stability is improved, the stabilizing plates slide in the adjusting grooves to adjust the positions of the stabilizing plates on the outer side of the base, and the positions of the wind-resistant plates are adjusted along with the stabilizing plates according to the wind direction; the wind-resistant plate can be adjusted in multiple directions according to requirements, so that the whole wire rack can induce wind, namely the wind-resistant effect is improved, and the wire rack is more stable in use.

Tires (1), comprising: a plurality of main grooves (21, 22) running in a circumferential direction of the tire; and five or more rows of web sections (31, 32, 33) defined by the main grooves (21, 22), wherein at least one row of the rib sections (31, 32, 33) comprises a plurality of continuous lug grooves (321, 331) extending in the tire width direction through the rib sections (31, 32, 33), wherein a pitch spacing length (P21, P31) of the continuous lug grooves (321, 331) is in a range of 7% or more to 14% or less of a maximum ground contact length (Lt) of the tire (1), and wherein a maximum groove depth (H21, H31) of the continuous tunnel grooves (321, 331) is in a range of 5% or more to 65% or less of a maximum groove depth (Hg1, Hg2) of the main grooves (21, 22).

The application discloses a posture and force monitoring device for a wheel-step type mechanized operation platform, which comprises a wheel-step type chassis body, an embedded inertia detection assembly, a composite force detection assembly, a data transmission module and a central control module. The embedded inertia detection assembly is arranged in a rotary base and is used for collecting a posture angle and acceleration. The composite force detection assembly comprises a shaft pin type multi-dimensional force sensor and a pin shaft load sensor, which in-situ replace a mechanical pin shaft, collect wheel leg ground contact force and support force of a support claw, and each component is connected to the central control module through the data transmission module. The application breaks through a blind area of a single sensor through multi-source sensing fusion, accurately identifies a virtual leg and a posture anomaly, does not change an original structure to guarantee strength, relies on box protection, heat insulation and shock absorption design to ensure data stability in a complex environment, optimizes posture estimation precision through a weighted fusion algorithm, and improves operation safety and environmental adaptation capability of the platform in a severe working condition through double logic early warning.

The invention discloses a design method of a connecting cloth assembly of a cabin door and a slide and the connecting cloth assembly. The length sum of front connecting cloth and back connecting cloth from respective separated ends to the convergence end of the front connecting cloth and the back connecting cloth is determined; the separated ends of the front connecting cloth and the back connecting cloth are set to be connected to the highest point a and the lowest point b in the horizontal direction of a cylinder at the end of the slide respectively, and the convergence end of the front connecting cloth and the back connecting cloth is located on a threshold of the cabin door. According to the geometrical relationship and stress condition selection of the slide, the front connecting cloth, the back connecting cloth and the threshold under the normal threshold condition and the minimum threshold condition, the grounding angle between the slide and the ground under the normal threshold condition and the grounding angle between the slide and the ground under the minimum threshold condition are all in a proper range. And the upheaval angle of the highest point of the slide relative to the threshold is in a safe range under the condition of the minimum threshold. The method can maintain the grounding angle, and can prevent the highest point of the slide from protruding too high relative to the threshold.

The utility model provides a structure automatic right -handed unmanned plane, including unmanned plane body, the top fixed mounting of unmanned plane body has the support column, the top fixed mounting of support column has the support pad, the inside of unmanned plane body is provided with drive power, the outside of unmanned plane body is provided with through -hole, the outside of unmanned plane body is provided with right -handed subassembly, the outside fixed mounting of right -handed subassembly has the connecting rod. That structure automatic right -handed unmanned plane, through setting right -handed subassembly, has guaranteed no matter unmanned plane turns over to which direction right -handed, can start corresponding right -handed subassembly to carry out attitude adjustment rapidly, has improved the success rate and response speed of automatic right -handed greatly, has improved operation efficiency and reliability, the support column of inclined structure provides the stable support foundation with annular triangle distribution and symmetric setting mode, can effectively disperse fuselage weight, strengthens the stability of ground contact, guarantees normal operation of each component.

The invention discloses a tire slip angle estimation method based on a BP neural network, and the method comprises the steps: building a tire finite element model, and verifying the precision of the model through a tire rigidity test; calculating the steady-state rolling angular velocity of the tire based on the tire finite element model; dividing the tire finite element model into a grounding area and a non-grounding area, configuring a fine grid for the grounding area, and configuring a coarsening grid for the non-grounding area; setting different side slip angles for simulation under a tire steady-state rolling working condition, and extracting a grounding area, a transverse stress maximum value, a transverse stress average value, a longitudinal stress maximum value and a longitudinal stress average value corresponding to each side slip angle as characteristic indexes; and by taking the characteristic indexes as input and the tire slip angle as output, constructing and training a BP neural network model to realize prediction of the tire slip angle. According to the method, the calculation efficiency is improved while the simulation precision of the key area is ensured, the selected characteristic indexes and the tire slip angle have clear mechanical association, and the interpretability of the model is enhanced.

The utility model discloses a monitoring device for building foundation settlement, which relates to the technical field of foundation settlement monitoring and comprises a bottom plate, an upright post fixedly connected to the upper side of the bottom plate, a limiting piece fixedly connected to the outside of the upright post, a rotating sleeve rotationally connected to the outside of the limiting piece, and a gear ring fixedly connected to the outside of the rotating sleeve. A rotating mechanism is installed outside the stand column, a plurality of sets of annularly-arranged fixing rods are fixedly connected to the outer portion of the rotating sleeve, a connecting cylinder is fixedly connected to the tail end of each fixing rod, a fixing square cylinder is fixedly connected to the tail end of each connecting cylinder, and a monitoring mechanism is installed on the inner side of each fixing square cylinder. According to the device, a sliding rod is automatically driven to make contact with a foundation through a balancing weight, settlement data are directly read through a graduated scale on a fixed square cylinder, the monitoring process is greatly simplified, convenience is improved, and meanwhile the settlement data can be accurately measured in the mode that the telescopic length of a connecting cylinder is adjusted and a motor drives a gear and a gear ring to rotate in a meshed mode. Different monitoring points can be flexibly covered, and omnibearing monitoring of foundation settlement is realized.

The utility model relates to engineering detection technical field, concretely is a crack identification device with protection function, including mobile seat, adjusting disc and detection device, the inside of mobile seat is provided with servo motor, the top of mobile seat is provided with drive mechanism, drive mechanism and servo motor's output fixed connection, the bottom of adjusting disc and drive mechanism's top fixed connection. The utility model, through the setting of drive mechanism, adjusting disc and moving mechanism, make detection device can carry out flexible adjustment of multi -angle, multiple position, improved the adaptability of device to different detection scene and crack position, effectively promoted the detection efficiency, through setting shock absorbing column, when the device is in the horizontal detection state, shock absorbing column and ground contact, the telescopic link of shock absorbing column and shock absorbing spring can effectively buffer the vibration, reduce the influence of outside vibration to detection identification device ontology, prolong the service life of device.

The utility model discloses auxiliary equipment for zero drift adjustment of a vortex shedding flowmeter. The auxiliary equipment comprises a grounding base; the extension bracket is telescopically arranged in the grounding base; the clamping part is arranged at the end part of the extension bracket and is used for placing the vortex shedding flowmeter; the adjusting assembly is arranged on the grounding base and used for adjusting the height of the extension support so that the vortex shedding flowmeter can be separated from the pipeline to conduct zero drift adjustment. When the device is used, the ground contact base is arranged on the side edge of a pipeline and makes contact with the ground, then the vortex shedding flowmeter is detached from the pipeline and placed in the clamping part, and finally the height of the extension support is adjusted, so that the vortex shedding flowmeter is separated from the pipeline and does not make contact with the pipeline. According to the vortex shedding flowmeter, the to-be-tested component is not required to be held by a hand in the null drift process, and grounding and auxiliary null drift adjustment in the null drift adjustment process are facilitated under the condition of isolating external interference in the null drift process.

The utility model discloses a self-adaptive posture adjustment humanoid robot, and relates to the technical field of humanoid robots. A self-adaptive posture adjusting humanoid robot comprises a trunk provided with feet, and further comprises the steps that the feet comprise heels, middle palms and toes, side skirt plates are symmetrically arranged on the two sides of the middle palms, and the side skirt plates are rotationally connected with the middle palms; the sliding block is arranged on the middle palm and is used for pushing the side apron board to rotate; according to the humanoid robot, the side skirt plates capable of being automatically folded and unfolded are arranged on the two sides of the middle palm, the side skirt plates are automatically unfolded when the feet fall on the ground in the walking process of the humanoid robot, the ground contact area of the middle palm is increased, the pressure intensity of the humanoid robot on the ground is reduced, meanwhile, the projection area of the humanoid robot is increased, and the humanoid robot is more attractive. The stability of the humanoid robot is improved when the middle palm leaves the ground and is about to step out of the next step. And the side apron board automatically resets, so that the side apron board is prevented from interfering with the other leg in the stepping process.

Provided is a pneumatic tire having a sufficiently suppressed change in handling property and sufficiently improved durability. This pneumatic tire comprises a tread portion including a rubber layer, the rubber layer is formed of a rubber composition having 0.25 or less of a loss tangent (15° C. tan δ) measured under such conditions as 15° C., frequency 10 Hz, initial strain 5%, and dynamic strain rate 1%, the tread portion includes a plurality of rib-like land portions formed by circumferential grooves continuously extending in the circumferential direction, the tread portion has a ground contact surface partitioned, at the equatorial plane, such that one ground contact area Sa and the other ground contact area Sb satisfy a relationship of Sa>Sb, and (formula 1) and (formula 2) are satisfied where Wt (mm) is the cross sectional width of the tire, Dt (mm) is the outer diameter, and V (mm3) is a virtual volume being the volume of a space occupied by the tire when the tire is mounted on a standard rim and the internal pressure is 250 kPa.1600≤(Dt2×π / 4) / Wt≤2827.4  (formula 1)[(V+1.5×107) / Wt]≤2.88×105  (formula 2)

The utility model belongs to the technical field of gradienters, and particularly relates to a gradienter with strong terrain adaptability, which comprises a gradienter main body and a placing plate, the gradienter main body is arranged on the top surface of the placing plate, the bottom surface of the placing plate is uniformly and fixedly connected with a plurality of screw rods, and the bottom ends of the screw rods are fixedly connected with hemispherical covers; a spherical block is movably connected in the hemispherical cover, a locking assembly is arranged on the side wall of the hemispherical cover, a threaded cylinder is fixedly connected to the bottom end of the spherical block, a screw is in threaded connection in the threaded cylinder, a mounting block is movably connected to the bottom end of the screw, and a mounting groove is formed in the bottom face of the mounting block. And a first supporting piece or a second supporting piece is arranged in the mounting groove. The length and the angle of each supporting rod can be adjusted according to the horizontal degree of the terrain, so that the supporting rods are in contact with the flat and high-hardness ground for stable supporting.

This utility model relates to the field of switchgear, specifically to a switch cabinet. This switch cabinet addresses the problem that the layout of components in existing switch cabinets tends to result in a high overall cabinet height. The switch cabinet includes a cabinet body, on which busbar bushings and outgoing line bushings are installed. A vertically arranged three-position switch is installed inside the cabinet. The closing, intermediate, and grounding contacts of the three-position switch are spaced apart from top to bottom. The busbar bushing is connected to the closing contact. The circuit breaker pole and outgoing line bushing are located on the side of the three-position switch, sharing the vertical space of the switch. The circuit breaker pole is connected to the intermediate contact, and the outgoing line bushing is connected to the circuit breaker pole. The vertically arranged moving contact has no cantilever end, avoiding deformation and ensuring reliable position switching. The shared vertical space of the circuit breaker pole and outgoing line bushing allows for a compact layout of components, reducing the overall cabinet height.

The present invention provides a formwork fixing member and a foundation construction method using the same, which eliminates the need to fix the formwork for the base section by driving in rod-shaped members. [Solution] The formwork fixing member 1 fixes the formwork 52 that creates the base portion 51 of the strip foundation 5. The formwork fixing member 1 includes a locking portion 11 that restricts the movement of the formwork fixing member 1 toward the widthwise edge of the base portion 51 by being locked to a foundation reinforcing bar holder 7 for holding the foundation reinforcing bars (bottom reinforcing bars 6) that are placed when creating the base portion 51, a ground contact portion 12 that extends from the locking portion 11 toward the widthwise edge of the base portion 51, and a formwork support portion 13 that rises from the widthwise edge of the ground contact portion 12 to support the formwork 52.

The utility model relates to the technical field of packaging boxes, and discloses a breathable fresh-keeping type packaging box which comprises a box body and a box cover movably arranged outside the upper end of the box body, a base is movably arranged at the lower end of the box body, check blocks are fixedly connected to the left end and the right end of the upper surface of the base, and stabilizing mechanisms are arranged at the front end and the rear end of the upper surface of the base. Anti-running mechanisms are arranged on the surfaces of the left side and the right side of the base; the interior of the box body is ventilated through the ventilation holes, the box body is prevented from being in direct contact with the ground through the base, so that moisture-proof treatment is conducted on the box body, the whole packaging box is convenient to move through universal wheels in the anti-running mechanism, and when the packaging box is placed on a conveying vehicle, the packaging box is convenient to move. A positioning rod in the anti-running mechanism is rotated to drive a clamping block to be far away from a second gear, a universal wheel can ascend, a base can make contact with the ground, and the phenomenon that only the universal wheel makes contact with the bottom face of a vehicle compartment, and the contact area is too small, so that a packaging box shakes and shifts during conveying is avoided.

The bottom of a processing table is supported by supporting rods, moving wheels are arranged at one ends of the supporting rods, the equipment is convenient to move, a telescopic piece of a positioning assembly pushes a positioning plate to make contact with the ground after the equipment is in place, and the equipment is prevented from moving. And the belt conveyor on one side of the processing table conveys the dried rice noodles to be processed to a designated position. The driving assembly drives the transmission assembly and the transmission mechanism to operate, the transmission assembly enables the guide plate to linearly reciprocate, the guide plate drives the cutter to continuously cut the dried rice noodles, and the cut dried rice noodles fall into the recovery tank and are discharged through the discharging port. The transmission mechanism enables the rotating shaft connected with the transmission mechanism to rotate intermittently, the rotating shaft drives the conveying block in the containing bin to rotate intermittently, the dried rice noodles falling into the conveying cavity are conveyed to one side of the discharging opening and fall down, and quantitative feeding is achieved. The feeding speed and interval time of the dried rice noodles can be adjusted by controlling the rotating speed of the rotating shaft, quantitative conveying of the conveying blocks is achieved, and different processing requirements are met.

The utility model provides an adjustable internal mold trolley adapting to different sections, which belongs to the technical field of tunnel construction, and comprises a cross beam, a door-shaped frame, a top frame fixed at the top end of the cross beam, a top mold plate detachably mounted at the top end of the top frame, a connecting hinge mounted between a side mold plate and the top mold plate, and a bottom mold plate detachably mounted at the top end of the door-shaped frame, the supporting structure comprises a protective shell fixed to one side of the bottom end of the side formwork, an outer cylinder installed at the bottom end of the protective shell, a supporting rod slidably connected to the interior of the outer cylinder and a power assembly arranged in the protective shell. According to the utility model, the gear motor drives the transmission shaft to rotate to drive the screw rod to rotate, so that the screw rod drives the supporting rod to be in contact with the ground to support and fix the side template, thereby realizing the bottom supporting function of the device, effectively dispersing the lateral pressure, avoiding the problems of displacement and deformation of the bottom of the template due to non-uniform stress, reducing slurry leakage, expanding the template and the like, and improving the production efficiency. And the tunnel lining construction quality is improved.

The application provides a kind of bionic multi-toe joint cooperative mechanical foot and bionic machine, including bionic toe-web opening and closing mechanism, bionic multi-toe joint section-by-section take-off mechanism and bionic foot web;The bionic toe-web opening and closing mechanism is connected with bionic multi-toe joint section-by-section take-off mechanism, and the bionic toe-web opening and closing mechanism is located above the bionic multi-toe joint section-by-section take-off mechanism, and the bionic foot web is connected with the bionic multi-toe joint section-by-section take-off mechanism, and the bionic toe-web opening and closing mechanism rotates to open the bionic multi-toe joint section-by-section take-off mechanism, thereby driving the bionic foot web to open.The toe-web opening and closing mechanism of the application realizes toe web opening through the forward rotation of the metatarsal bone after the mechanical foot touches the ground, thereby significantly increasing the ground contact area, reducing the ground pressure, and increasing the ground friction.

Provided are a ground contact and a mower provided with the ground contact. A novel and useful configuration is provided for a ground contact that is mounted to a cutting blade shaft of a mower. The ground contact is mounted to the cutting blade shaft of the mower. The ground contact includes a mounting portion for mounting the ground contact to the cutting blade shaft of the mower, and a main body portion that is joined to the mounting portion and contacts the ground. In the cutting blade shaft, a cutting blade is mounted at a position that is higher than the ground contact. The main body portion has a first main body portion that is formed of a first resin, and a second main body portion that is formed of a second resin that is different from the first resin.