15 results about "Hinge joint" patented technology

This invention relates to the field of shear capacity testing for hinge joints in hollow concrete slab bridges. It provides a method for testing the contribution of hinge joints to shear capacity in hollow concrete slab bridges, addressing the prominent issue of hinge joint defects during operation, such as cracking, damage, and water seepage, which in extreme cases can lead to "single-slab stress" in the hollow slab. The unbonded hinge joint specimen proposed in this invention eliminates the bonding force at the hinge joint interface by placing a thin film thereon. In this case, the shear capacity of the unbonded hinge joint specimen is borne by the shear reinforcement. This allows for the measurement of strain distribution along the entire length of the shear reinforcement, effectively preventing interference from closely distributed strain gauges on the bond between the shear reinforcement and concrete, and obtaining strain data of the shear reinforcement throughout the loading process. Based on the principle of superposition of components, a formula for calculating the shear capacity of the hinge joint is derived, quantifying the contributions of concrete and shear reinforcement to the shear capacity of the hinge joint.

1. Name of the product in this design: Bridge Expansion Joint (Embedded). 2. Application of this design: It is used for expansion joints between two beam ends, between beam ends and abutments, or at the hinged joints of bridges. When used in conjunction with prefabricated expansion joints or permanent-temporary combined expansion joints, it serves as a pre-installed (pre-embedded) product for prefabricated expansion joints or a temporary expansion (pre-embedded) product for permanent-temporary combined expansion joints. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The present application relates to the technical field of bridge reinforcement, and specifically relates to a kind of integral transverse prestress reinforcement design method of assembly type hollow slab beam bridge, comprising the establishment of lateral pressure and pressure relief bending moment distribution model caused by transverse prestress acting on hinge joint section;A transverse prestressed tendon includes several transverse bridge setting prestressed tendons, the maximum lateral pressure and maximum pressure relief bending moment under the action of a transverse prestressed tendon are calculated;Based on the principle of superposition of multiple prestress, the total lateral pressure and total pressure relief bending moment of hinge joint section under the action of multiple transverse prestressed tendons are determined;According to the distribution of hinge joint shear force design value and transverse bending moment design value along the bridge span, the prestressed tendon spacing that meets the requirements of shear resistance and bending resistance is calculated respectively;Take smaller spacing as control value, arrange prestressed tendon.The present application can scientifically guide transverse prestress reinforcement design, effectively improve the shear resistance and bending resistance of hinge joint, enhance the integrity of bridge, and has important engineering application value.

The utility model relates to a kind of aqueduct post-cast strip reinforcing steel bar fast connector with adjusting function, including first sleeve, second sleeve and universal hinge joint, one end of first sleeve is nested connection one end of universal hinge joint, the other end of universal hinge joint is nested hinged one end of second sleeve, the other end inner wall of first sleeve is provided with first thread for screwing first reinforcing steel bar, the other end inner wall of second sleeve is provided with second thread for screwing second reinforcing steel bar, first thread and second thread are reverse, since universal hinge joint has angle adjusting ability, can automatically adapt the deviation of reinforcing steel bar axial, effectively solve the problem of reinforcing steel bar installation difficulty in slope section, staggered area.

The utility model discloses a novel press type decompression animal toy relates to decompression toy technical field, it includes the base and top cover as the body, head, foot each has the hinge arm for and the hinge joint of base, the top cover of elasticity is connected on the top of base and can contact the end of each hinge arm through pressing, to make head and foot swing upwards together, the head has the movable hinge of lower jaw piece and eyelid piece, when the lower jaw piece opens because the head swings upwards, can through the pull rod and pull the eyelid piece synchronous open to expose the eyeball piece in the head that is covered by it. Compared with the prior art, the design press top cover can make the head and foot of animal swing, and the partial feature of head can produce dynamic change synchronously, has certain decompression effect.

The device belongs to the field of medicine, namely to orthopedic dentistry, and is used in prosthetics to ensure the accuracy of the dental preparation stage. The use of a device containing a tip - a 1:5 micromotor with a red stripe or a turbine, a coupling, an abrasive tool, two levers, a template, a hinge joint, a flange, a sleeve, a bracket and a shaft in which the flange is attached to the template, the latter is printed on a 3D printer, and the hinge joint is made of precision linear sliding bearings and a guide shaft, while the shaft and bracket are parallel to each other, and the tip is attached with a coupling so that The fact that the axis of the abrasive tool is parallel to the axis of the shaft, compared to the prototype, allows for a wider range of applications in this area of ​​orthopedic dentistry.

The invention discloses a laptop bracket which comprises a left support plate and a right support plate, wherein the left support plate and the right support plate are hinged to each other through a hinge; the hinge is arranged below the connecting part of the left support plate and the right support plate; a left guide groove is formed in the left support plate; a right guide groove is formed inthe right support plate; a left hinge rod is mounted at the left end of the left support plate; a right hinge rod is mounted at the right end of the right support plate; the upper end of the left hinge rod is hinged to the left support plate; the lower end of the left hinge rod is hinged to a left bracing plate; the hinge joint position of the left hinge rod and the left bracing plate is positioned in the middle of the left bracing plate; the upper end of the right hinge rod is hinged to the right support plate; the lower end of the right hinge rod is hinged to a right bracing plate; the upperend of the left bracing plate is arranged on the left support plate in a sliding manner; the upper end of the right support plate is arranged on the right support plate in a sliding manner; the laptop bracket further comprises a positioning mechanism; the positioning mechanism is used for fixing the positions, on the left support plate and the right support plate, of the upper end of the left bracing plate and the upper end of the right bracing plate.

The invention relates to the technical field of puncture in the interventional department, and provides an intelligent depth-adjustable puncture device for the interventional department, which comprises a universal flexible arm, and one end of the universal flexible arm is provided with a fixed seat connected with external equipment and an angle adjusting assembly. The angle adjusting assembly is installed at the other end of the universal flexible arm through a connecting frame, the puncture assembly is arranged on the angle adjusting assembly, through the arrangement of the structures such as the multi-section flexible arm and the transmission line, the multi-section flexible arm is composed of a plurality of hinged joint units, and the transmission line is connected with the multi-section flexible arm. The transmission lines are symmetrically arranged on the two sides of the arm body and connected to the tail end joint, the retracting and releasing amount is accurately controlled through the first power end and the second power end, the arm body is accurately bent in a three-dimensional space, it is ensured that an end effector stably reaches a preset target spot area, the problem of path deviation caused by the fact that the bending direction of a traditional flexible pipe is uncontrollable is solved, and the bending efficiency is improved. The problems of easy deviation and insufficient stability in the prior art are solved.

This utility model belongs to the field of tooling and fixture technology, and particularly relates to a ball-head pin tooling fixture, comprising: a base, on which a movable cavity and an air cavity connected to the movable cavity are provided, and a set of symmetrical hinge joints are provided on one side of the base end face of the movable cavity, with independent clamping bodies connected to the hinge joints respectively; a driving component, comprising a piston and a pneumatic component, wherein the piston is disposed in the movable cavity, the output end of the piston extends to the outside of the movable cavity and is connected to the clamping frame, and the pneumatic component is connected to the port of the air cavity and supplies or evacuates air to the movable cavity and the air cavity; wherein, the driving component controls the piston to move up and down in the movable cavity, and controls the movement of the clamping frame during the movement, and the clamping frame performs opening and closing movements through the hinge engagement with the hinge joints.

The utility model relates to a steel bar structure technology field, concretely relates to a hinge joint's steel bar structure, wherein, parallel to hollow board cross section direction, top to bottom arrangement order is: first main reinforcement, first vice muscle, second vice muscle, third vice muscle, second main reinforcement. First longitudinal stirrup fastening two first main reinforcement and two second vice muscle, second longitudinal stirrup fastening two first vice muscle and third vice muscle, third longitudinal stirrup fastening two second vice muscle and second main reinforcement. First transverse stirrup fastening two first longitudinal stirrup and two second longitudinal stirrup, second transverse stirrup fastening two second longitudinal stirrup and two third longitudinal stirrup. Through setting up main reinforcement, vice muscle, longitudinal stirrup, transverse stirrup correlation structure, makes steel bar stress mutual coordination at hinge joint, enhances shear strength, promotes hinge joint stress performance, prolongs concrete beam life.

The wearable device for estimating the weight of the head and skull of a living person based on a load cell, goniometer, and biomechanical model is a wearable device in the form of a cervical collar that is capable of non-invasively estimating the weight of the head and skull of a living and healthy person. Measuring the weight of the skull has many applications in medical sciences and anatomy. However, there are invasive and imaging methods for it. To address this challenge, a new idea has been presented for rapid measurement of head weight in living humans, which includes a shoulder support structure, two load cells mounted on the shoulders, two lever arms that transfer the force of the head weight from the chin rest and the headrest to the load cells, an inertial goniometer module for measuring the flexion and extension angles of the head, and a microcontroller board that is connected to Using a reference biomechanical model and calibration data tables from MRI imaging studies and volume-density analysis, the actual head weight is calculated from the measured forces and head angle and displayed on the display. The lever arms are connected to the headrests via spring-loaded hinge joints to eliminate errors due to initial pressure and anatomical differences.

This invention discloses a sliding vane, roller compressor, and refrigeration equipment, relating to the field of compressor technology. The sliding vane includes a main body and a hinge joint, with the hinge joint located at one end of the main body. The orthographic projection of the hinge joint includes a first arc segment, a third arc segment, and a transition segment. The transition segment and a reference base circle together form a reference notch. The area S1 of the reference notch and the area S2 of the orthographic projection satisfy: [insert value here]. The transition segment is configured as a straight line, and S1 and S2 satisfy: [insert value here]. The technical solution of this invention aims to optimize the notch size of the hinge joint, thereby balancing the processing feasibility of the sliding vane and the performance of the compressor.

A dentofacial orthopedic device comprising a brace and a bracket. The brace is configured to be anchored to a skull with cranial anchorage assemblies. The bracket comprises a first bracket member and a second bracket member. The first bracket member comprises a proximal end secured by an adjuster to a receiving member of a clamp mounted to the brace. The second bracket member has a tail end hingedly connected to a distal end of the first bracket member by a hinge joint and an anterior member configured to be rotatably anchored to an anterior portion of the skull by fasteners. The first bracket member is rotatable about the receiving member for a selective locking of the first bracket member at different angular positions relative to the second bracket member with the hinge joint. Actuation of the adjuster causes displacement of the bracket relative to the brace.

A hinge joint for eyeglasses is described, comprising a joint body (4) forming a hinge axis and designed in its basic form as a body of revolution, and a bearing fork (3) provided on a temple arm (2), which engages in a circumferential groove (5) of the joint body (4) coaxial with the hinge axis. The end face of the joint body (4) is positively locked between two parallel legs (9) of a temple arm (6) that are connected at their ends. To simplify the design, it is proposed that the joint body (4) be radially extended on its circumferential side facing the outside of the temple arm to form two rectangular projections (8) in which receiving grooves (7) for the legs (9) of the temple arm (6) are formed. Furthermore, the projections (8) are designed to be elastically bendable about axes parallel to the grooves, allowing the legs (9) to engage radially with each other in a snap-lock-like manner in the receiving grooves (7).

The application provides an inductive knee joint stability enhancement protective support and a protection method, which comprises a flexible support base body composed of an outer breathable elastic fabric, a middle bionic ligament reinforcement structure and an inner skin-friendly moisture absorption layer; and a multi-mode high-density sensing array integrated in the flexible support base body. The inductive knee joint stability enhancement protective support and the protection method provided by the application can monitor the motion state and stress condition of the knee joint in real time through the sensing module, and control the driving module to adjust the support force of the hinge joint according to a preset algorithm through the control module, so as to realize dynamic enhancement of the stability of the knee joint. Compared with the traditional knee joint protective support, the application has the advantages of high intelligentization, real-time response to dynamic changes of the knee joint, good comfort and the like, can effectively improve the stability of the knee joint, and reduce the risk of knee joint injury.