18 results about "Counterforce" patented technology

The application belongs to the technical field of static test, and relates to a quasi-static test device. The device comprises a support frame, two first hydraulic push rods symmetrically arranged on the support frame, a sliding block, a pressure frame slidably connected to the sliding block, a base fixed to the lower part of the support frame, connecting frames symmetrically arranged and slidably connected to the base, a counterforce frame rotatably connected to the connecting frames, torsional springs fixed between the counterforce frame and the connecting frames, and extrusion frames symmetrically arranged and slidably connected to the base. The positions of the two extrusion frames are adjusted to determine the position of the counterforce frame for supporting the sample, so that the end-fixed sample and the end-hinged sample are simulated. The height of the extrusion frame is changed to adjust the compression degree and the inclination degree of the counterforce frame during force receiving, so that the quasi-static test of the sample under various boundary conditions is realized, and the diversity of test results is improved.

The application discloses a high-efficiency shield split launching and tunneling construction method, which comprises the following steps: S1, first-time main machine tunneling; S2, second-time main machine, equipment bridge, 1# and 2# trolley tunneling; and S3, third-time whole machine launching and tunneling. The shield split launching and construction is divided into three tunneling processes by adopting the method of shield body assembling in a shaft launching shaft, stage tunneling, and moving the counterforce frame forward after removing the negative ring segment in advance. The three-time split launching can realize the high-efficiency shield split launching and construction even under the condition of the single shaft narrow space. After the first-time main machine split launching and tunneling for a certain distance, the negative ring segment is removed in advance, the counterforce frame is moved to the hole end, the single shaft can provide the space for the subsequent trolley to go down the shaft, the vertical transportation space of the tunneling construction is increased, the input of a plurality of extension pipelines is reduced, the tunneling construction efficiency is improved, the whole machine tunneling is realized through the three-time process conversion, and the construction cost and the construction difficulty are effectively reduced.

The utility model relates to an inspection device for calibrating the output coefficient of a hydraulic steel sleeper, which comprises an inspection bench main body, an output mechanism, a counter-force mechanism and a pressure measurement system, and is characterized in that the inspection bench main body comprises a base and a support frame, and the base and the support frame are arranged at an interval along the height direction of the inspection bench main body; the output mechanism comprises a jack, an oil pump and an oil pipe, the jack is directly or indirectly arranged on the base, and the oil pipe is connected with the oil pump and the jack; the counter-force mechanism and the output mechanism are oppositely arranged, at least part of the counter-force mechanism is located on the upper side of the supporting frame, the counter-force mechanism comprises a force transmission column and a counter-force plate, the counter-force plate is arranged on the side, away from the jack, of the force transmission column, and the counter-force plate abuts against the fixing face and can bear the pressure of the jack; the pressure measuring system is used for monitoring pressure values of the jack and the steel sleeper and displaying monitoring data. The inspection device for calibrating the output coefficient of the hydraulic steel sleeper can accurately calibrate the output coefficient and the stability of the hydraulic steel sleeper, and provides reliable technical support for the detection of water-power engineering steel sleepers.

The application discloses a structure for providing counterforce for secondary launching of a variable-diameter shield machine after in-hole diameter expansion, comprising a small-shield tail ring cavity steel pipe piece, a diameter-expanding temporary support end wall steel pipe piece, a large-shield head ring cavity steel pipe piece and a counterforce conversion steel rib plate structure; the small-shield tail ring cavity steel pipe piece is arranged at the tail end of a small-shield conventional concrete pipe piece, the diameter-expanding temporary support end wall steel pipe piece is arranged at the outer periphery of the small-shield tail ring cavity steel pipe piece, the large-shield head ring cavity steel pipe piece is fixedly arranged at one side of the diameter-expanding temporary support end wall steel pipe piece, the counterforce conversion steel rib plate structure is fixedly arranged at the inner peripheral surface of the large-shield head ring cavity steel pipe piece, and the counterforce conversion steel rib plate structure is fixedly connected with the diameter-expanding temporary support end wall steel pipe piece and the small-shield tail ring cavity steel pipe piece. Through the above arrangement, the application can set a structure system of an existing small-shield tunnel pipe piece and a stable bedrock attached thereto, so that the structure system has a clear stress transmission path, high bearing capacity and safety and reliability.

The invention discloses a two-roll 220kV transformer suitable for the altitude of 5000 meters, and relates to the field of transformers, the two-roll 220kV transformer comprises an adjusting mechanism and an oil conservator installed on the top of the adjusting mechanism, a lifting mechanism is installed on one side of the adjusting mechanism, and a transformer body is installed on the top of the lifting mechanism. The height of the sliding frame and the height of the lifting frame are adjusted through driving of an air cylinder so as to meet the requirements of different altitudes and site positions, height locking is achieved through clamping connection of a locking block and a control box, the stability and safety of the adjusting process are ensured, a driving motor drives a rotating rod to rotate, and an eccentric wheel and a center groove are matched to apply counter-acting force to control lifting of the sliding frame; when the inclined face of the locking block makes contact with the control box, the lifting direction of the lifting frame and the sliding frame is determined, the locking block is pushed to make contact with the supporting column through the elastic effect of the mounting groove, the precise locking height is ensured, the locking block and the sliding rod move together through sliding of the sliding rod in the mounting groove, and precise adjustment of equipment is ensured through coordination and cooperation of all components.

The invention discloses a center pillar failure simulation test device for studying progressive collapse resistance of a steel frame structure, which comprises a test substructure, a reaction wall, an MTS actuator, an oil jack, a mechanical jack, a sliding support assembly, a mechanical sensor, a pressure beam, a steel pier, a boundary condition updating system and a data interaction control system, the device can collect the displacement of the test piece in real time, perform data interaction with a numerical model, dynamically update the boundary load, realize the relationship between a neutral substructure and a residual system in progressive collapse test research, break through the technical bottleneck of fixed boundary of the traditional anti-collapse test, and greatly improve the test precision of the anti-collapse test of the substructure.

The embodiment of the application provides a determination method of a support leg counterforce digital twin model and a support leg counterforce determination method. The determination method of the support leg counterforce digital twin model comprises the following steps: determining a plurality of working condition parameter types of an engineering equipment related to the support leg counterforce and a plurality of working condition parameter groups containing the plurality of working condition parameter types, then determining a support leg counterforce theoretical value, a support leg counterforce simulation value and a support leg counterforce actual value corresponding to each working condition parameter group, and determining the support leg counterforce digital twin model according to the three kinds of support leg counterforce values and the plurality of working condition parameter groups. After the support leg counterforce digital twin model is transplanted to the engineering equipment, the model can be directly applied to the detection of the support leg counterforce. The processor only needs to input the working condition parameters of the engineering equipment into the model, and the corresponding support leg counterforce can be obtained, so that the detection of the support leg counterforce is more accurate, and the safety monitoring of the engineering equipment is facilitated. Moreover, the model can not only be used for the counterforce monitoring in operation, but also can be used for the counterforce prediction before operation.

The invention provides a counter-force frame for a shield launching opening negative ring and a construction method of the counter-force frame. The counter-force frame comprises a pi-shaped beam, a transverse beam and a transverse beam, the two stand columns are parallel to the plane where the pi-shaped beam is located, and the upper portion of each stand column is connected with the oblique beam on the corresponding side through a set of connecting pieces; the two sets of connecting pieces are correspondingly arranged between the two oblique beams and the stand columns on the corresponding sides respectively. Wherein each group of connecting pieces comprises a plurality of connecting pieces; the supporting assembly comprises two inclined struts and two groups of first horizontal struts; one ends of the two inclined struts are correspondingly connected with the middle parts of the two upright posts respectively; the two first horizontal supports are correspondingly and vertically arranged on the lower portions of the two stand columns respectively. Through the structural design of the counter-force frame, the counter-force frame is suitable for providing counter-force in the shield tunneling machine propelling process when the negative ring is a split ring, the counter-force frame can be installed and fixed without full-ring splicing of the negative ring, the using amount of negative ring materials is effectively reduced, time consumed for splicing and dismounting of the negative ring is reduced, and the construction efficiency is improved.

The invention relates to the field of pile foundation detection, and particularly discloses a pile foundation self-balancing counter-force device and a pile foundation detection method.The pile foundation self-balancing counter-force device comprises a steel reinforcement cage, a counter-force box and a detection module, the steel reinforcement cage comprises vertical steel bars, annular steel bars and at least three guide steel bars, the guide steel bars are vertically arranged and evenly distributed with the vertical steel bars, and the counter-force box is connected with the detection module; the annular reinforcing steel bars are bound on the vertical reinforcing steel bars and the guide reinforcing steel bars, and a first guide groove and a second guide groove are formed in the side, facing the interior of the reinforcement cage, of each guide reinforcing steel bar; the counter-force box is arranged in the second guide groove in a sliding mode, and the detection module is arranged in the first guide groove in a sliding mode. The detection module comprises an industrial camera. The invention aims to solve the technical problem of how to determine the friction force balance point.

The invention discloses a structure for providing counter-force for secondary starting of a variable-diameter shield machine after diameter expansion in a hole. The structure comprises a small shield tail ring cavity steel pipe piece, a diameter expansion temporary support end wall steel pipe piece, a large shield head ring cavity steel pipe piece and a counter-force conversion steel rib plate structure. The small shield tail ring cavity pipe piece is arranged at the tail end of the small shield conventional concrete pipe piece, the expanding temporary support end wall steel pipe piece is arranged on the periphery of the small shield tail ring cavity pipe piece, and the large shield head ring cavity steel pipe piece is fixedly arranged on one side of the expanding temporary support end wall steel pipe piece. The counter-force conversion steel rib plate structure is fixedly arranged on the inner circumferential face of the large shield head ring cavity steel pipe piece, and the counter-force conversion steel rib plate structure is fixedly connected with the expanding temporary support end wall steel pipe piece and the small shield tail ring cavity pipe piece. By means of the arrangement, the structure system can be arranged on the existing small shield tunnel segment and the stable bed rock attached to the small shield tunnel segment, so that the structure system is clear in stress transmission path, high in bearing capacity, safe and reliable.

The application provides an EPB-TBM double-mode shield whole launching method for super deep and large diameter, and relates to the technical field of shield tunnel construction.The method comprises the following steps: excavating and supporting a vertical shaft, a pilot tunnel and a rear blind hole in sequence to form a mutual communication; installing a launching base and a rear steel frame in the vertical shaft, hoisting the main machine components of a shield machine into the vertical shaft and assembling the main machine components on the launching base; pushing the assembled main machine components forward in the pilot tunnel and synchronously assembling multiple trolleys used in sequence in the rear; pouring a counterforce ring beam in the tunnel face area of the pilot tunnel, and installing a continuous slag removal system in the composite space formed by the vertical shaft, the pilot tunnel and the rear blind hole; starting the shield machine to perform whole launching and excavation when the counterforce ring beam reaches the first design strength, and continuously removing slag through the continuous slag removal system.The method not only greatly shortens the shield launching time, saves the large-area foundation pit excavation link and significantly saves the construction cost, but also improves the construction efficiency of super deep and large diameter tunnels.

The present application belongs to the technical field of large bridge sinking well construction, and relates to a large sinking well foundation suspension type in-situ test reaction force system and a construction method. The system comprises a sinking well foundation and a plurality of embedded pipes embedded in the bottom section of the sinking well foundation, wherein a steel rod is arranged in the embedded pipe. The steel rod can extend out of the well wall or the partition beam outside the bottom section of the sinking well foundation and is sleeved with a steel beam. A rigid bearing plate is arranged below the steel beam. A jack is arranged between the rigid bearing plate and the bottom of the steel beam. A plurality of displacement sensors are arranged on the rigid bearing plate. The displacement sensors are connected with a static load tester for real-time recording of in-situ test pressure and sinking amount data. The present application can improve the operation space of the test and detection personnel in the well cabin of the large sinking well foundation, and the test can be carried out at any point position in the well cabin, even close to the well wall. The present application can not only meet the principle of randomly selecting test points, but also meet the requirement of carrying out the test at the most unfavorable position.

The utility model relates to the field of bridge building detection, and discloses a reinforcing layer foundation reliability detection device, which comprises a detection mechanism and a fixing mechanism, the detection mechanism comprises a control console and a retaining frame, the bottom of the control console is fixedly connected with a bottom plate, the front end face of the control console is fixedly connected with an ultrasonic-rebound comprehensive detector and a ground penetrating radar, and the retaining frame is fixedly connected with the ultrasonic-rebound comprehensive detector. A fixing plate is movably connected to the position, located at the front end of the console, of the top of the bottom plate, a counter-force frame is fixedly connected to the top of the fixing plate, the fixing mechanism comprises two screws, the outer walls of the two screws are in threaded connection with fixing blocks, the outer walls of the two fixing blocks are fixedly connected with protruding plates, and a jack is fixedly connected to the rear end face of the counter-force frame. According to the utility model, through the arrangement of the detection mechanism, multiple detection functions are integrated, carrying and operation are convenient, the detection efficiency is improved, and through the arrangement of the fixing mechanism, data during load detection are more stable.

The utility model discloses a locking structure of contactor for ship, include: counterforce mechanism includes connecting rod, and connecting rod is connected with support, interlocking piece and connecting rod cooperation form first locking portion, second locking portion, and interlocking piece is equipped with interlocking hole, and first locking portion, second locking portion form the connecting fixed of connecting rod and interlocking piece, drive assembly includes drive source and lock bolt, and drive source drives lock bolt to move, and the state of opening and closing, and lock bolt extends to interlocking hole, and lock bolt locks interlocking piece, and the state of closing, and lock bolt is from interlocking hole and extends, and connecting rod drives interlocking piece to move, this structure, simple structure, locking effect is good, avoids the misoperation of contactor under the vibration environment, improves the stability of contactor work.

The utility model relates to the field of deviation rectifying reaction frames, and discloses a deviation rectifying reaction frame device for bridge incremental launching construction, which comprises a sliding plate, the top of the sliding plate is fixedly connected with a supporting plate, the left side of the supporting plate is fixedly connected with a fixing frame, and the inside of the fixing frame is fixedly connected with a hydraulic cylinder I; the output end of the first hydraulic cylinder is fixedly connected with a sliding frame, the front side of the sliding frame is fixedly connected with a second hydraulic cylinder, the interior of the sliding frame is slidably connected with a third hydraulic cylinder, the output end of the third hydraulic cylinder is slidably connected with a lantern ring, the top of the lantern ring is fixedly connected with a rubber pad, and the output end of the third hydraulic cylinder is provided with a replacement assembly. And a cleaning assembly is installed on the right side of the sliding frame, and the replacement assembly comprises two inner shells. According to the utility model, the limiting frame is pushed by the spring I to drive the ball to be clamped in the lantern ring and fixed together with the rubber pad, so that the rubber pad can be quickly disassembled and assembled, the replacement is convenient, the operation is simple and convenient, time and labor are saved, and the replacement efficiency is effectively improved.

The utility model discloses an engineering material compression-torsion composite creep characteristic test system, which comprises a counter-force frame, a horizontal loading mechanism and an arc-shaped bearing plate, balls are embedded on the inner surface of the bearing plate, a torsion loading mechanism is placed above the bearing plate, the torsion loading mechanism comprises a plurality of torsion rollers with round exteriors and square interiors, and the torsion rollers are connected with the counter-force frame. Square holes penetrate through the central axes of the twisting rollers, a sample horizontally penetrates through the twisting rollers, a stand column is installed on the tops of the twisting rollers, a lifting rope is connected to the stand column, a lifting hook used for being connected with a weight is arranged at the lower end of the lifting rope, and angle values in a circumferential array are arranged on the side faces of the twisting rollers. A plurality of vertically downward pointers are slidably mounted on the lower surface of the top frame of the counter-force frame through sliding grooves. The creep characteristic testing system can be used for testing the creep characteristic of the sample under the working condition of single load of pressure load and torsion load or multiple composite loads, and in the testing process, the testing system can reduce the interference load influence on the sample and improve the testing accuracy.

This invention discloses a portable, small-tonnage pile pull-out reaction force testing device. It comprises a frustum-shaped reaction force steel cage consisting of two sets of four supporting steel pipes each, a bottom annular steel plate, a bottom circular steel hoop, a top annular steel plate, and several pins. All supporting steel pipes have circular holes at both ends. The top annular steel plate has a through hole in the center and is surrounded by annular lifting lugs. One supporting steel pipe from each set is connected and fixed to an adjacent annular lifting lug. The bottom annular steel plate has annular lifting lugs distributed around its inner and outer rings and around the bottom circular steel hoop. The innermost supporting steel pipe is connected and fixed to an adjacent annular lifting lug in the inner ring, while the outermost supporting steel pipe is connected and fixed to adjacent annular lifting lugs in the outer ring and the bottom circular steel hoop. Using this reaction force device, for pile pull-out testing with a bearing capacity below 800kN, it is easy to install and retract on-site, eliminating the need for large machinery such as cranes, significantly reducing costs, and broadening its applicability.