30results about How to "Ensure stable positioning" patented technology

The invention discloses a clamp for turning a universal joint. The clamp comprises a first locating mechanism used for locating a universal joint work-piece (1) in the vertical shaft direction of the universal joint work-piece (1), and a second locating mechanism used for locating the universal joint work-piece (1) in the horizontal shaft direction of the universal joint work-piece (1). The first locating mechanism and the second locating mechanism can locate the universal joint work-piece in the vertical shaft direction and the horizontal shaft direction at the same time, and therefore the universal joint work-piece can be clamped in a centring mode, firm locating in the turning process is guaranteed, and the coaxiality of two cylindrical shafts on the two sides of a machined cylindrical shaft is guaranteed. The clamp can clamp and locate the universal joint work-piece accurately.

Stereolithography machine (1) comprising: a supporting frame (2); a tank (3) suited to contain a liquid substance; a supporting plate (4) associated with the supporting frame (2), suited to support the tank (3); a stopping unit (5) suited to firmly hold the tank (3) on the supporting plate (4) in a resting position; emitter means (6) suited to direct a predefined electromagnetic radiation (6a) towards the tank (3); a holding unit (7) of the tank (3) operatively associated with the supporting plate (4) through first actuator means (8) configured so as to move the tank (3) with respect to the supporting plate (4) according to a predefined trajectory of movement. The stopping unit (5) comprises second actuator means (17) that define for the stopping unit (5) an active configuration for holding the tank (3) and a rest configuration for releasing the tank (3).

In a cup for an eyepiece of an optical observation instrument, comprising a peripheral wall which includes an eyepiece-connecting section for connection of the cup to an eyepiece, a transition section which adjoins the eyepiece-connecting section, a light-protecting attachment which, by way of a sectional part of the transition section; is joined to a side of the transition section that is turned away from the eyepiece-connecting section; a sight hole which is laterally defined by the peripheral wall; the peripheral wall being movable into a first, non-folded end position for someone who does not wear spectacles for preclusion of any incidence of stray light upon an eyepiece lens, and into a second, folded end position for spectacle wearers; it is provided, with a view to the possibility of use of the optical observation instrument without any negative effect for someone who does not wear spectacles as well as for spectacle wearers, that the peripheral wall is movable into a third stable position of ventilation, located between the first and the second end position, for someone not wearing spectacles for preclusion of any fogging of the eyepiece lens.

The present invention relates to a vehicle brake (10) comprising a housing (12), a brake piston (16) accommodated in the housing (12) and coupled to a brake lining (20), a blocking device (26) for arresting the brake piston (16) inside the housing (12), and an electromechanical actuating device (42) for activating the blocking device (26) in a parking brake situation, wherein the brake piston (16) together with the housing (12) delimits a fluid chamber (68) that is chargeable with hydraulic fluid, so that the brake piston (16) for actuating the vehicle brake (10) is hydraulically displaceable inside the housing (12) along a piston longitudinal axis (A). In such a vehicle brake it is provided that there is associated with the blocking device (26) a locking arrangement (125), which in a parking brake situation acts mechanically on a component (36) of the blocking device (26) and locks the blocking device against a resetting movement.

The present invention relates to a double connector for a tubular insert, intended to connect an extra-corporeal circuit to a peristaltic pump. The double connector comprises: a first channel with an axis a₁, a second channel with an axis a₂ not parallel to a₁, a pressure chamber arranged along the first channel and suitable for co-operation with a pressure sensor. The pressure chamber is closed, on the opposite side with respect to the second channel, by a membrane which extends mainly in a plane n substantially parallel to both the axes a₁ and a₂. Moreover, a straight line r, passing through both axes a₁ and a₂ and perpendicular thereto, crosses the membrane. The invention also relates to a tubular insert comprising the double connector and an extra-corporeal circuit comprising the tubular insert.

The invention relates to an angle face clamping device. A positioning assembly is arranged at one end of a base plate and the other end of the base plate is provided with a fork seat. One end of the fork seat is connected with a pressing plate in a moving mode through a straight pin. One end of the pressing plate is provided with a pressing block. The front end of the pressing block is of a semi-cylindrical structure and bends downwards to form an angle along the surface of the pressing plate. Opened grooves which are opposite to each other in position are formed in the fork seat and the pressing plate respectively. Bolts are arranged in the opened grooves and handle nuts are in threaded connection with the upper portions of the bolts and press the pressing plate. The angle face clamping device can rapidly position parts and is simple in clamping method and capable of improving processing efficiency and ensuring the quality of processed parts.

The invention provides a multimedia teaching device for college English education, belongs to the technical field of multimedia desks for English teaching, and aims to solve the problems that when a multimedia learning desk for English learning is used, multimedia equipment of the learning desk is placed on a desktop and is very easy to be polluted by chalk dust in a classroom environment, the multimedia equipment is inconvenient to clean, meanwhile, sight lines are prone to being blocked, and students cannot see a blackboard in the front conveniently. The multimedia teaching device comprises a lower table body. The two side edges of an upper table board are fixedly connected to the two side walls of the lower table body. Two inward pushing frames are arranged, and the two inward pushing frames are connected between the lower table body and the upper table plate in a sliding mode. A swing shaft of the multimedia teaching screen is hinged to the tail end of the inward pushing frame. Therefore, compared with an existing teaching desk for English learning, the storage mode of the multimedia assembly is improved, the influence of dust in a classroom on multimedia equipment can be greatly reduced, and the probability that the multimedia equipment is damaged by the dust is reduced.

A device to increase the stowage capacity of vehicles that comprises a fabric, box-like or cylindrical shaped receptacle and primary support straps and tie down straps to mount the receptacle on the rear or side of a vehicle and to minimize sway of the receptacle when the vehicle is in motion.

A spectacle frame including a front face for supporting the lenses and temples connected to the front face by means of hinges, each including an attachment member, respectively rigidly connected to the front face and to the temples, each receiving a hinging member, having its free end provided with a hinge pin, said hinge pins being perpendicular to each other. The attachment members are hollow and define a cylindrical sheath. The hinging members each include a rod, intended to be received in the respective sheath, one of the ends of the rod being provided with an abutment and the other end being provided with said hinge pin, each of the rods receiving a sliding ring submitted to the action of a spring bearing against the abutment, said ring being rigidly connected to the corresponding attachment member near the free end thereof. The hinge pins of the hinging members are rigidly connected to each other by means of a connection member.

A mowing or grinding device comprising a rotatable shaft which carries a plurality of mowing or grinding tools which form flails, each tool being mounted directly or indirectly on the rotatable shaft by means of at least one hinged connection with preferred positioning, which allows keeping the tool in the operating position to be favored and comprises a mounting aperture and an axial support which passes through the mounting aperture; the device being characterized in that the positioning portion of the axial support has at least one cylindrical boss which has a circular surface and the positioning portion of the mounting aperture has at least one concave housing which has a circular surface which is capable of receiving the circular surface of the cylindrical boss when the tool is in the operating position, the circular surface of the concave housing having a constant curve which is complementary to the circular surface of the cylindrical boss over a periphery which is greater than a quarter circle.

The invention discloses a masonry method for a deformed part and a weld joint crossing part of a cylinder. The masonry method comprises the following steps: 1) measuring and confirming the deformed part before masonry; (2) mortar is laid on the cylinder at the deformation position, and bricks are kept horizontal; (3) when the deformation area is built, a wet building mode is adopted, large-surface mortar joints of the fire bricks are kept at 1-1.5 mm, the fire bricks are completely attached to one another, and the large ends of the bricks are attached to the cylinder; wherein when the weld joint is higher than the surface of the kiln cylinder by more than 8mm, the building is carried out after the higher part is polished off; and when the welding seam is within 8mm higher than the kiln cylinder, the bottom of the fire brick is paved with fire clay, so that the brick ring at the welding seam is parallel to the rest brick rings. According to the masonry method for the cylinder deformation and weld joint crossing part, stable positioning of the refractory bricks and the stability of the whole arch ring can be ensured.

A camera module. The camera module includes a circuit board on which at least one image sensor is situated; an objective including a lens housing and multiple optical lenses situated inside the lens housing; an objective holder, which is connected to the circuit board and is designed to hold the objective; and at least one temperature control element, which is designed to influence the temperature of at least one front lens of the objective; a second optical lens being situated at the front lens. The front lens and/or the second optical lens includes/include at least one recess, the at least one temperature control element being situated in the at least one recess.

A construction machine for special civil engineering, includes a leader on which an advancing carriage is guided, which carriage has a holder for a work device, in particular a drilling implement or pile-driving implement, and which carriage is connected with a first drive, by way of which it can be moved along the leader. An additional auxiliary carriage is arranged on the leader, which carriage can be moved along the leader by way of a second drive, wherein at least one actuator and/or at least one sensor is/are arranged on the auxiliary carriage.

The invention relates to a workpiece positioning device, specifically a positioning tool for engine detection. The tool comprises a supporting platform, and the supporting platform is provided with afirst sliding rail. One side of the supporting platform is hinged to a sliding table, and the sliding table is provided with a second sliding rail. The first sliding rail and the second sliding rail are connected with each other, and a material carrying vehicle is disposed above the sliding table and is provided with a positioning tube. The positioning tube vertically passes through the material carrying vehicle, and one end of the positioning tube extends above the material carrying tube. The bottom of the material carrying vehicle is provided with a roller, and the roller is slidingly connected with the first sliding rail and the second sliding rail. A chute is disposed above the sliding table, and the interior of the chute is slidingly provided with a supporting rod. One end of the supporting rod is connected with a pressing plate, the bottom of the pressing plate is provided with a positioning pin, and the other end of the supporting rod abuts against the free end of the sliding table. The sliding table is slidingly connected with the chute. The tool solves a problem that the operation difficulty is bigger in the prior art during the engine detection.

The invention provides a no-thimble-plate core pulling molding mold, and relates to the technical field of mold equipment. The no-thimble-plate core pulling molding mold comprises an upper mold base,a molding fixed block, a molding module, a core pulling module, a fixed plate, a lower mold base, a thimble module, two inclined guide columns, two side pulling modules and two cushion block modules;the molding fixed block is used for achieving a positioning effect on the molding module before parting; the molding module and the core pulling module are used for molding products; a molding part isdriven by a limiting part to perform an internal shrinkage motion near the axis of an internal shrinkage guide block to realize demolding of molded products; thimbles are contacted with the top endsof the inner surfaces of molded workpieces; and during opening of molds, support springs are continuously located in a rebound state to realize support fixation of the molded workpieces by the thimbles after internal shrinkage of the core pulling module. The no-thimble-plate core pulling molding mold is simple in structure, saves a thimble plate, and can effectively realize stable support of the molded workpieces.

The invention discloses a side die sorting mechanism applying a die distribution robot, which comprises a feeding roller way used for conveying side dies, the feeding roller way comprises a roller frame and conveying rollers fixed on the roller frame, the conveying rollers are sleeved with limiting rings, the limiting rings on the conveying rollers are matched to form a groove-shaped linear channel for the side dies to pass through after the side dies are placed in, and the feeding roller way is used for conveying the side dies. The tail end of the feeding roller way is provided with a limiting plate used for stopping the side die. The feeding roller way is further provided with a side mold sensor for judging the side mold number. During mold distribution, the mold distribution robot clamps the side mold with the specific size from the temporary storage frame or the storage frame and encloses the side mold into a specific shape, so that a prefabricated part with the required shape can be formed through pouring, the side mold is convenient to take and place in the whole process, and the mold distribution efficiency is high; the invention further discloses a mold distributing method applying the sorting mechanism.

A medical punch with a hollow shaft, a tool point that is positioned on the distal end of the shaft and includes a rigid cutting part and a cutting part that can slide with respect to the rigid cutting part, and with a handle positioned on the proximal end of the shaft, such that the displaceable cutting part and the handle are operatively connected with one another by a push/pull device that is displaceably mounted in the hollow shaft and an anti-tilt mechanism is positioned on the tool point to stabilize the cutting parts in their axially parallel alignment to one another. The rigid cutting part includes a sleeve-shaped proximal portion that encloses the displaceable cutting part and a distal punch portion configured as a single unit with the sleeve-shaped portion and that the rigid cutting part should be detachably connected with the hollow shaft by a coupling mechanism formed on the sleeve-shaped portion.