524 results about "Vertical force" patented technology

The invention discloses an elevator operation fault early warning method and system, relates to the technical field of intelligent elevator control, and aims to improve the operation safety and fault response capability of an elevator in a potential abnormal state. By constructing a load critical drift test working condition, a sudden non-vertical stress test working condition and a weak power supply fluctuation interference test working condition, abnormal behaviors which are difficult to appear but have potential safety hazards in the normal operation process of an elevator are induced; the method comprises the following steps: acquiring operation data under various working conditions, respectively calculating a drift overload response coefficient, a guide rail non-vertical interference coefficient and a power supply induced instability coefficient, respectively comparing the coefficients with preset thresholds, and judging whether operation faults such as brake response mismatching, asynchronous action of safety tongs and door lock control interference exist or not; and if the judgment result is abnormal, a targeted strategy is automatically generated and early warning is given out. According to the method, active recognition and classified response of elevator faults can be achieved, and the maintenance efficiency and the operation reliability are effectively improved.

The invention relates to the technical field of machine tool cross beams, in particular to a numerical control gantry machine tool cross beam anti-deformation device which comprises a cross beam, two symmetrically-distributed top connecting pieces are rotationally installed at the top of an inner cavity of the cross beam, and two symmetrically-distributed bottom connecting pieces are rotationally installed at the bottom of the inner cavity of the cross beam. The distance between the two bottom connecting pieces is smaller than that between the two top connecting pieces, tensioning assemblies with adjustable tightness are installed between the bottom connecting pieces and the adjacent top connecting pieces, the two top connecting pieces are located at the two ends of the cross beam, and the two bottom connecting pieces are located in the middle of the cross beam. According to the invention, through the top connecting piece, the bottom connecting piece and the tensioning assembly, an obliquely upward pulling force is applied to the cross beam, the pulling force is decomposed into a vertically upward force and a horizontal force, and the vertical force can offset the gravity of the middle part of the cross beam, so that the downward bending deformation of the cross beam is reduced, and the purpose of reversible deformation is achieved.

The method comprises the following steps: judging whether each wheel clamping force sensor works normally, if so, directly obtaining a brake clamping force as a final brake clamping force, if not, obtaining a first brake clamping force through a motor model, and if not, obtaining a second brake clamping force through a motor model; second brake clamping force is obtained through the brake friction plate model, and fusion is conducted through the fuzzy logic weight algorithm to obtain final brake clamping force; judging whether the wheel has a locking risk or not, if not, calculating the current ground longitudinal force of the wheel according to a kinetic model of the wheel, if so, triggering longitudinal force locking logic, and acquiring the current locking ground longitudinal force as the current ground longitudinal force of the wheel; calculating the current utilization adhesion coefficient of each wheel in combination with the vertical force; and determining the road surface type of the vehicle by using a fuzzy rule based on the adhesion coefficient of each wheel. According to the invention, the problem of low identification precision is solved.

An energy return device for a midsole of a shoe comprises a resilient foam or matrix structure, such as a domed disk, around a cavity. The resilient structure is arranged to collapse into the cavity under foot strike pressure. The structure may initially resist the pressure primarily by compression forces directed around the cavity. As the cavity collapses these forces may provide decreasing vertical spring rate as the structure bends or as the forces become less vertical, causing the structure to stay more compressed through the midstride and energy return to be delayed until the user has moved further forward in their stance. At full collapse the material of the structure may resist further downward force of the user by direct compression. A lateral expansion limiter may resist lateral expansion to increase vertical force supplied by the compression forces around the cavity and reduce interference with other components. A support structure may help guide the collapse and increase spring force.

The invention discloses a method for evaluating the performance of a friction pendulum type seismic mitigation and isolation support in a service state. The method comprises the following steps: S1, carrying out horizontal sliding displacement and vertical force detection on the friction pendulum type seismic mitigation and isolation support in service; s2, according to the detected data, the sliding interface friction coefficient mu of the service friction pendulum type seismic mitigation and isolation support is calculated; s3, according to the obtained sliding interface friction coefficient mu of the in-service friction pendulum type seismic mitigation and isolation support, anti-seismic performance indexes of the friction pendulum type seismic mitigation and isolation support are calculated, and the anti-seismic performance indexes comprise the horizontal rigidity and the effective damping ratio coefficient; and S4, according to the influence of the sliding interface state change and the horizontal rigidity change on the seismic damage state of the bridge structure, the anti-seismic safety risk of the friction pendulum type seismic mitigation and isolation support in the sliding interface state is graded. By means of the method, the sliding interface state and the specific friction characteristic of the friction pendulum type seismic mitigation and isolation support in the service state can be obtained, and therefore the anti-seismic performance of the friction pendulum type seismic mitigation and isolation support can be evaluated.

The invention belongs to the technical field of wind driven generator main bearing test equipment, and discloses a five-degree-of-freedom wind driven generator main bearing test bench for simulating real working conditions, which comprises a loading system, a test system and a driving system. The loading system adopts a sliding bearing loading disc to simulate a hub of the wind driven generator, and adopts a hydraulic cylinder array to simulate five-degree-of-freedom hub loads of three-direction forces including axial force, radial force and vertical force and two-direction moments including pitching moment and yawing moment. The test system adopts a two-point supported tapered roller bearing main shaft system to simulate the main shaft configuration of the wind driven generator, and can be independently disassembled to replace the model of a test bearing. The driving system adopts a variable-frequency and variable-speed motor, the rotating speed range is 0-200 rpm, and the requirements of various working conditions such as frequent start and stop, performance tests and strengthening tests can be met. According to the invention, through multi-dimensional load loading and multi-working-condition simulation, a key platform is provided for reliability test and failure mechanism research of the wind power main bearing.

The invention belongs to the technical field of flight mechanics, and particularly relates to a V-shaped empennage control surface course control extension control method which comprises the steps that a left control surface deflection angle reaches an upper limit, a right control surface deflection angle continues to deflect leftwards, and a right empennage generates right lower lift increment perpendicular to the incoming flow direction; the right empennage can simultaneously generate a vertically downward force and a head-up torque relative to the gravity center of the whole aircraft; a downward head lowering moment is generated through the longitudinal periodic pitch change of the rotor wings and the tilt angle of the rotor wings, so that the pitching moment is balanced; the vertical force balance of the whole aircraft is achieved by adjusting the attack angle of the aircraft body.

The invention discloses a suspension pitching cooperative control system and method combining dynamic vertical force distribution and multi-mode braking, and particularly relates to the field of vehicle suspensions. Meanwhile, the braking torque distribution unit and the suspension system are controlled in real time by defining a state machine; vehicle low-speed target braking torque and tire vertical force are calculated through the expected deceleration and correspondingly input into a braking torque distribution unit and a four-degree-of-freedom suspension model; converting the four-degree-of-freedom suspension model into a state-space equation and discretizing the state-space equation to obtain a prediction model, and further deriving a state prediction equation of the future N steps; designing a cost function comprising a state quantity weight matrix Q, an input quantity weight matrix R and a state final value weight matrix F, substituting a prediction state into the cost function to obtain an optimal input sequence, dynamically adjusting suspension rigidity, damping and a braking force distribution strategy, and correcting a control instruction in real time by using closed-loop feedback of a vehicle body attitude sensor, so as to improve the stability of a vehicle body. And the suspension pitching control is realized.

An example payload for an inspection robot having a mounting rail to inspect an inspection surface, the payload including a wedge element; and a probe holder, including: a mounting rail connection member structured to connect to the mounting rail; a wedge element holder structured to hold the wedge element; a spring-loaded member structured to connect to the mounting rail connection member and to provide a selected vertical force on the wedge element holder; and an extended member structured to connect to the spring-loaded member between a first end and a second end, and to connect to the wedge element holder at the second end.

The invention discloses a multi-axial force sensor with force measuring beams with high lateral force sensitivity and strong bending resistance, the multi-axial force sensor comprises a first table body, a second table body and a plurality of force measuring beams, the force measuring beams comprise a transverse force measuring beam and a vertical force measuring beam, the vertical force measuring beam comprises two sheet-shaped vertical beam arms which are parallel to each other, and the two sheet-shaped vertical beam arms are parallel to each other. The orientation of the larger side faces of the two thin-sheet-shaped vertical beam arms is consistent with the extending direction of the two ends of the transverse force measuring beam, and the two vertical beam arms are located on the two sides of the center line of the transverse force measuring beam respectively. The thin vertical beam arms are adopted, when the thin vertical beam arms are subjected to lateral force, deformation of the vertical beam arms is large, high sensitivity of the lateral force can be obtained, meanwhile, the vertical force measuring beam adopts a double-beam form of a thin-wall structure, the two vertical beam arms are separated by a certain distance, and the two vertical beam arms bear bending moment together, so that the force measuring beam can bear large bending moment. That is to say, the force measuring beam can maintain strong bending resistance on the basis of realizing high lateral force sensitivity.

An apparatus for reducing wearer fatigue for use in a wearable safety harness system includes a dorsal chassis capable of engagement with one or more shoulder safety straps and one or more lower torso webbing straps, an attachment subassembly comprising of a D-ring, a self-retracting lifeline attachment point, lower torso webbing strap attachment point, and a force-reduction mechanism. The attachment subassembly is attached to the dorsal chassis via the force-reduction mechanism such that force-reduction mechanism absorbs vertical forces produced by the weight of a self-retracting lifeline. The force-reduction mechanism absorbs vertical forces produced by the lower torso webbing strap resulting from the attachment of tools or equipment to the lower torso webbing strap. The arrangement of the apparatus also promotes increased flexibility between the shoulder safety straps and the lower torso webbing straps torso safety strap, thereby reducing wearer fatigue.

The invention provides valve steel casting strength detection equipment, and relates to the technical field of valve strength detection.The valve steel casting strength detection equipment comprises a transverse sliding rod, a U-shaped vertical supporting frame is welded to the top end of the transverse sliding rod, and a transverse force distribution plate is fixedly arranged below the transverse sliding rod; two L-shaped mounting plates are symmetrically and fixedly connected to the top ends of the square driving block and the vertical force transmission plate, U-shaped mounting frames are fixedly connected to the L-shaped mounting plates, and I-shaped driving parts are slidably mounted on the two U-shaped mounting frames; and two longitudinal limiting shafts are symmetrically and fixedly connected to the bottom end part of the transverse sliding rod, transverse sliding plates are slidably installed on the two longitudinal limiting shafts in a spring pushing mode, positioning insertion shafts are fixedly connected to the inner sides of the transverse sliding plates, and the I-shaped driving part is in penetrating sliding fit with the U-shaped transmission frame. According to the device, the switching and adjusting operation of the use states of the vertical supporting and jacking plate and the jacking swing plate can be driven and executed through one-time sliding of the vertical force transmission plate, the operation steps are simplified, and the operation and use efficiency of the detection equipment can be indirectly improved.

The invention relates to the technical field of elevator assembly performance testing, and particularly provides an elevator component safety automatic detection device. Comprising a detection table, a linkage rack horizontally installed on the detection table in a sliding mode, a vertical test piece assembled on the linkage rack and a horizontal test piece assembled on the linkage rack. The vertical test piece comprises two test assemblies which are vertically and oppositely arranged and a transposition assembly which is assembled between the two test assemblies; the device provided by the invention can be used for detecting the safety strength of the elevator landing door, the elevator landing door to be detected can be fixedly mounted through the arranged detection table, comprehensive detection including a plurality of single tests in two force application directions of vertical force application and horizontal force application can be performed on the elevator landing door, the test comprehensiveness and convenience in operability are improved, and the detection efficiency is improved. And the standardization and uniformity of the test are improved, and the accuracy and reliability of the test result are ensured.

The invention relates to the technical field of robots, and discloses a jewelry selling robot based on intelligent interaction, which comprises a machine body, and further comprises a frame body fixedly connected to the bottom of the machine body, a driving base fixedly connected to the bottom of the frame body, and a plurality of guide frames which are arranged at equal angles and are horizontally connected to the interior of the frame body in a sliding manner, the multiple pressed parts fixedly connected with the guide frame are arranged, secondary buffering stabilization is conducted through the stability maintaining part, and the stability maintaining part keeps stable continuously when the transmission part does not return to the initial state at the moment. Through the multi-layer structure, accurate coping with collisions with different strengths is achieved, buffer springs directly absorb energy during slight collision, frequent action of a transmission part is avoided, inclined grooves of guide grooves convert horizontal force into vertical force during large collision, all the buffer springs are compressed together, a magnetic ring and an adsorption ring are adsorbed stably, deviation of the robot is avoided, and the service life of the robot is prolonged. And the customer is prevented from being injured when being collided.

The invention provides a coupler force calibration method and device, and the method comprises the steps: obtaining a three-point bending beam model which is used for representing a beam structure formed by the direct connection of a coupling end of a first coupler and a coupling end of a second coupler in a coupling state, and simplifying the tail part of the first coupler into a clamped constraint, the tail of the second car coupler is simplified to be clamped constraint, and the clamped constraint limits the vertical displacement and the rotation angle of the tail of the corresponding car coupler at the same time; applying a vertical load at a preset position on the first car coupler; the bearing reaction force borne by the tail of the target car coupler under the action of the vertical load is determined, so that the calibration relation between the vertical load and the bearing reaction force of the tail of the target car coupler is constructed, and the bearing reaction force of the tail of the target car coupler is the vertical force borne by the tail of the target car coupler and transmitted at the preset position on the first car coupler; the target coupler is one of the first coupler and the second coupler. According to the invention, the accuracy of vertical load transmission calculation is improved.

Systems, methods, and other embodiments described herein relate to a vehicle tire guard that retracts in response to a force. In one embodiment, the vehicle tire guard device includes a tire guard extending downward from a vehicle frame and a retraction system attached to the vehicle frame. The retraction system includes a spring-loaded wheel with circumferential interface elements to engage with and retract the tire guard responsive to a vertical force applied to the tire guard, a curved cam affixed to a planar surface of the spring-loaded wheel, and a spring-loaded rod biased against the planar surface. The spring-loaded rod and cam interact to prevent rotation of the spring-loaded wheel to retract the tire guard until the vertical force exceeds a threshold.

An example implementation involves controlling robots with non-constant body pitch and height. The implementation involves obtaining a model of the robot that represents the robot as a first point mass rigidly coupled with a second point mass along a longitudinal axis. The implementation also involves determining a state of a first pair of legs, and determining a height of the first point mass based on the model and the state of the first pair of legs. The implementation further involves determining a first amount of vertical force for at least one leg of the first pair of legs to apply along a vertical axis against a surface while the at least one leg is in contact with the surface. Additionally, the implementation involves causing the at least one leg of the first pair of legs to begin applying the amount of vertical force against the surface.

A control system (300) for controlling an active suspension system (104) of a vehicle (100), the active suspension system comprising suspension actuators (502), the control system comprising one or more controller (301), wherein the control system is configured to: in dependence on an activation signal (904), provide (908) a control signal to the active suspension system to cause the suspension actuators of the active suspension system to repetitively pulse vertical force through wheels (FR, FL, RR, RL) of the vehicle in a controlled pattern determined by the one or more controller, to vary wheel-to-surface contact patch forces, wherein the pattern comprises repetitively pulsing vertical force through at least one of the wheels at a first phase and through at least one other of the wheels at a second phase.

The invention relates to the technical field of detection devices, and provides a detection device for a vehicle door handle, the vehicle door handle is provided with a base and a handle hinged to the base, the detection device comprises an operation table, and the operation table is provided with a fixing unit, a driving unit and a reset unit; the fixing unit is used for fixing a base on the vehicle door handle; the reset unit is used for driving the handle to reset; wherein the driving unit is provided with a rotary driving piece and a connecting piece, and the rotary driving piece is provided with an arc-shaped movement track coinciding with the rotating center of the handle; the rotation driving piece drives the handle to rotate relative to the base through the connecting piece, and the motion trail of the rotation driving piece and the rotation path of the handle have the same rotation center, so that the acting force generated by the connecting piece on the handle is always perpendicular to the direction of the extension line of the handle; therefore, the stress state of vertical force application of a palm in actual operation of a passenger is closer, and the working condition reduction degree and the result accuracy of durability testing are remarkably improved.

The utility model provides an upper supporting roll balancing device of a finishing machine. The upper supporting roll balancing device comprises a rack, the driving mechanism is used for simultaneously outputting two groups of horizontal forces in opposite directions; the force conversion mechanism is used for correspondingly converting each group of horizontal force into a group of force in the vertical direction at the same time; each group of vertical force has the same direction; the first end of the pull rod mechanism is connected with the force conversion mechanism, and the second end of the pull rod mechanism is matched with the T-shaped groove in the top of the upper supporting roller bearing seat. Therefore, the acting force in the horizontal direction and the acting force in the vertical direction are synchronously converted through a single driving source, the problem of poor synchronism caused by independent work of multiple traditional hydraulic cylinders is solved, the inclination risk in the lifting process of the upper supporting roller is prevented, and potential safety hazards of equipment are eliminated; meanwhile, complex detection elements such as a displacement sensor are omitted, the system structure is simplified, the equipment cost and the failure rate are reduced, and stable lifting of the upper supporting roller under the two working conditions of pushing-in and pushing-out is achieved.

The present invention relates to the technical field of seismic isolation bearings, and in particular, to a deformation monitoring device and method for a seismic isolation rubber bearing. The planar detection substrate and the conical detection substrate of the deformation monitoring device for the seismic isolation rubber bearing are both connected to the rubber bearing body; the probes of the first displacement detection sensor and the probes of the second displacement detection sensor are respectively in contact with the planar detection substrate and the conical detection substrate; wherein, the surface of the planar detection substrate for contacting the probe of the first displacement detection sensor is a plane, and the surface of the conical detection substrate for contacting the probe of the second displacement detection sensor is a conical surface. The deformation monitoring device for the seismic isolation rubber bearing has a simple structure, can be installed and used together with the bearing, and can simultaneously monitor the vertical force and the shear force, so that it is convenient to understand the performance of the bearing and the damage condition after an earthquake during long-term use.

The invention relates to a ground simulation device for testing an underground logging pup joint, which comprises a logging pup joint and a leak-off ring which are arranged in a kettle body, the logging pup joint is positioned in the leak-off ring, the kettle body is connected with a slurry injection unit, and the slurry injection unit is used for injecting slurry into a space in the leak-off ring and a space outside the leak-off ring. The slurry injection unit is also used for injecting pressure into the leak-off ring, so that the slurry in the leak-off ring is filtered into a mud cake; electromagnets and force measuring sensors are arranged on the left side and the right side of the kettle body, the electromagnets are used for providing suction force for the well logging short section, and the force measuring sensors are used for measuring the suction force of the corresponding electromagnets; the lower end of the kettle body is connected with a vertical force applying unit, and the vertical force applying unit is used for injecting a jam releasing force in the vertical direction to the lower end of the kettle body so as to research the relationship between the jam releasing force and the suction force. Potential hazards possibly caused by testing of the well logging short section in an actual well are greatly avoided, and manpower, material resources and time cost are saved to a great extent.

The invention discloses an offshore wind power foundation design method and system based on the partition progressive stability principle and an offshore wind power foundation, and relates to the technical field of offshore wind power foundation engineering.The method comprises the steps that target site environment parameters, seabed geological parameters and fan unit parameters are obtained, and the design parameter range of a floating body and a built-in foundation is set; based on the partition progressive stability principle, the total overturning moment corresponding to the overall stability constraint under the extreme working condition is distributed to the floating body and the built-in foundation according to the partition distribution coefficient, a floating body restoring moment and built-in foundation anti-overturning moment formula is established, and overall stability, horizontal force and vertical force balance constraint is formed; and with the maximum total restoring moment and the minimum steel consumption as double objectives, target design parameters are optimized and solved by adopting a multi-objective optimization algorithm. Through the torque partition distribution design between the floating body and the built-in foundation, the stable synergistic effect is achieved, the steel consumption per unit megawatt is remarkably reduced to 300 tons or below, and the obvious structural light weight and cost advantages are achieved.

The invention provides a method and a device for measuring a wear coefficient of a roller, electronic equipment and a storage medium, and relates to the technical field of rail transit. A to-be-tested roller and a worn roller are driven to slide relatively; determining the sliding distance of the to-be-tested roller based on the relative sliding rate of the to-be-tested roller relative to the worn roller, the radius of the to-be-tested roller, the number of rotation turns of the to-be-tested roller and the rotation speed of the to-be-tested roller; obtaining the loss weight of the roller to be tested in the wear experiment; and acquiring the vertical force on the contact surface of the worn roller and the to-be-tested roller in the wear experiment and the hardness of the to-be-tested roller so as to acquire the wear coefficient of the to-be-tested roller. According to the invention, the actual wear environment of the roller to be tested on the track is simulated, and the measurement accuracy and authenticity of the wear coefficient of the roller of the track are improved. According to the invention, the actual sliding distance of the to-be-tested roller on the track is accurately calculated, and the measurement accuracy and authenticity of the wear coefficient of the roller of the track are improved.

The present invention belongs to the technical field of artificial heart valves, and particularly relates to a method for forming a frame of an artificial heart valve, a planar forming machine and a mold. The method for forming a frame of an artificial heart valve, the planar forming machine and the mold of the present invention are provided with a plurality of convex push blocks and arc-shaped push blocks that can move independently, and according to the forming curve of the wire, the mold closing directions of the respective push blocks are designed, which can avoid and overcome the technical problem in the prior art that during the planar forming process, when the upper and lower molds provide a relatively large vertical force, the sliding property of the wire in the horizontal direction is not good, resulting in incomplete mold closing and failure to achieve the expected shaping effect; moreover, due to the unique design of the mold closing direction, the external force applied by the push block on the wire is small, scratches on the wire are not likely to occur, and the appearance of the finished product will not be affected; the planar forming machine for the frame of the artificial heart valve can realize continuous automated production of planar forming, so as to improve production efficiency.

This utility model discloses a fabric take-up mechanism for a heat setting machine, relating to fabric heat finishing equipment technology. The key technical points are: it includes a frame and a take-up roller. Two symmetrically arranged mounting brackets are rotatably connected to the frame, which also houses a first adjusting roller and a second adjusting roller. The first adjusting roller exerts a downward vertical force on the fabric, which is balanced with the fabric's tension. When the taken-up fabric becomes longer due to setting, the tension is less than the force exerted by the first adjusting roller, causing the first adjusting roller to move downwards. This moves the second adjusting roller away from the take-up roller, lengthening the fabric between the second adjusting roller and the take-up roller, thus re-tensioning the fabric and restoring the tension to balance with the force exerted by the first adjusting roller. This design allows the first and second adjusting rollers to adjust the fabric tension on the take-up roller in real time, reducing the likelihood of wrinkles appearing on the fabric.

The utility model provides an adjustable flame bomb launching device, which relates to the technical field of flame bomb launching, and comprises a base, a support frame is arranged at the top of the base, a launching device main body is arranged at the top of the support frame, a gun barrel is arranged on one side of the launching device main body, a buffer device is arranged at the bottom of the support frame, and the buffer device is arranged on the base. A connecting device is arranged on the surface of the gun barrel, the buffering device comprises a sliding groove, a connecting plate is fixedly connected to the bottom of the supporting frame, when the buffering device is used, namely, when a flame bomb is launched, generated recoil pushes the connecting plate to slide in the sliding groove, and then a first damping rod and a first spring are extruded; the first damping rod is used for damping in the direction away from the supporting frame, due to the fact that recoil force can have force in the vertical direction, the first connecting block slides in the first connecting groove, the first damping rod is prevented from being broken, and buffering can be conducted to a certain degree.

The invention belongs to the technical field of basically non-cutting machining or treatment of metal plates or pipes or bars or profiles, and particularly relates to a demolding device for a special-shaped copper bar flow guide mold and a working method of the demolding device for the special-shaped copper bar flow guide mold. A pair of demolding mechanisms are arranged on the transverse moving assembly in a penetrating mode, and the demolding mechanisms are located above the placing positions; the downward pressing assembly is connected with the transverse moving assembly; according to the demolding device for the special-shaped copper bar diversion mold and the working method of the demolding device, the rotatable demolding inclined plate is arranged, so that during initial demolding, vertical force is generated through inclination of the demolding inclined plate, then the mold generates slight displacement in the vertical direction, the binding force between the copper bar and the mold is damaged through the vertical shearing force, and the mold is convenient to separate; and after demolding, continuous generation of shearing force in the vertical direction is avoided through the perpendicularity of the demolding inclined plate, so that the mold completely moves in the horizontal direction.

The present invention relates to the technical field of foundation reinforcement, and specifically to a composite foundation structure and a construction method. A concrete reinforcement member for horizontally connecting adjacent pipe piles is cast in the inner cavity surrounded by a head connecting member and a mold connecting member. A sunken hole is provided at the upper end of the pipe pile, and the inner cavity of the sunken hole is integrally cast with a high-strength adhesion layer. A deformation coordination layer is cast on the upper end of the high-strength adhesion layer. The beneficial effects are as follows: By setting the cast concrete reinforcement member, the connection between the ends of adjacent pipe piles is realized, and thus the force on the pipe piles is evenly distributed to each pipe pile, avoiding the extrusion of soft soil by a single pipe pile, improving the stability of the foundation. At the same time, by setting the connection between the sunken hole and the cushion layer, the vertical force on the pipe piles is ensured.

The invention discloses a high-temperature friction testing device for a hydraulic slide valve. The device is composed of a valve element clamping module, a valve body mounting module, a vertical force applying module, a high-temperature heating module and a friction force applying module. The valve element clamping module is composed of a valve element, a valve element centering fixing column, a valve element fixing clamp, a valve element mounting rod and a mounting rod fixing shell. The valve body mounting module consists of an oil storage tank, an oil storage tank fixing plate and a valve body; the vertical force applying module comprises X, Y and Z three-axis guide rails driven by a motor, and pressure and friction force sensors; the high-temperature heating module surrounds the whole valve body and the valve core mounting part; the friction force applying module is driven by a motor to drive the oil storage tank to achieve axial movement of the valve body, and relative friction between the valve element and the valve body is achieved. The device can carry out friction tests of the hydraulic slide valve at different temperatures, realizes friction wear simulation of the hydraulic slide valve under multiple working conditions of oil environment, high temperature, pollution and the like, and provides data support for wear and degradation tests of the hydraulic slide valve.