37results about How to "Limit axial movement" patented technology

There are provided a ball screw enabling the reduction of weight and size of a CVT without reduction of the transmission efficiency as well as a CVT in which the ball screw is incorporated. A CVT of the present invention comprises an axially immovable pulley half 2 and axially movable pulley half 3 both mounted on a rotary shaft 4, and the axially movable pulley half 3 being moved by a ball screw 20 so as to infinitely vary the belt wrapping radius and thus the transmission speed, and is characterized in that a nut 22 forming one part of the ball screw 20 is immovably secured both in axial and rotational directions, a screw shaft 21 forming the other part of the ball screw 20 is movable both in axial and rotational directions and connected to the axially movable pulley half 3, and the axially movable pulley half 3 is axially moved by rotating the screw shaft 21.

A running tool for well drilling operations is carried by a running string into and out of a wellbore. A collet is carried by the running tool, the collet having fingers with a radially expanded position arranged to latch against a wellbore shoulder in the wellbore. The fingers are resiliently and radially contractible. A shear element is carried by the collet, the shear element preventing the fingers from radially contracting to unlatch the running tool while the shear element is intact. If a selected axial force is applied against the shear element, it shears, freeing the collet fingers to retract. The collet may be part of a tool to set and release a liner hanger from engagement with a string of casing.

The invention is applied to the field of small and medium diameter deep hole processing, and in particular relates to a hydraulically-based self-correcting system for small and medium diameter deep hole processing. Including inner rotary body, outer rotary body and driving mechanism; the inner rotary body is sleeved on the outer periphery of the drill pipe and fixed relative to the drill pipe; cutting fluid is filled between the inner rotary body and the outer rotary body so that the inner rotary body and the outer rotary body A flow channel is formed between the bodies, and the flow channel includes a plurality of wedge-shaped flow channels uniformly distributed in the circumferential direction. When the driving mechanism drives the inner rotary body to rotate, the cutting fluid enters the small end from the large end of the wedge-shaped flow channel, and the superposition of pressure flow and shear flow generates Oil film pressure realizes self-centering and self-correction of drill pipe. The present invention forms a wedge-shaped flow space between the wedge-shaped entity and the outer sleeve. Under normal conditions, the oil film pressure in the wedge-shaped space provides a circumferentially symmetrical self-centering force; when the drill pipe is deflected, the wedge-shaped space will generate oil film pressure, that is, self-correction The drill pipe can be "pushed back" to the correct axis by using the self-correcting force, so as to realize the self-correction of the axis deviation.

The invention discloses a mine self-discharging vehicle front suspension frame guide mechanism and a connecting assembly of a vehicle frame. The guide mechanism comprises an A-shaped arm. The invention is characterized in that an A-shaped arm installing seat is arranged in the vehicle frame, the A-shaped arm is respectively provided with installing holes corresponding to both ends of the A-shapedarm installing seat, joint bearings are respectively arranged in the installing holes, the installing holes and the A-shaped arm installing seat are respectively connected through connecting shafts, one end of the connecting shafts is matched with the inner rings of the joint bearings, the other end of the connecting shafts is provided with eccentric convex plate, eccentric grooves matched with the eccentric convex plate are arranged on the inner side of the A-shaped arm installing seat, the center of the connecting shaft is provided with a screw hole, and an installing screw is in arrangement matched with the screw hole. The invention is provided with the connecting shafts, the A-shaped arm and the vehicle frame are connected through the connecting shafts, screw bolts are arranged in inner holes of the connecting shafts for limiting the axial movement of the connecting shafts, the eccentric structures limit the relative rotation of the connecting shafts and the installing holes, the abrasion generated by the connecting shafts because of the movement can be prevented, and in addition, the coaxiality requirement during the installation can be met.

The invention provides an assembly method of a variable compression ratio drive structure, the variable compression ratio drive structure drives the eccentric shaft in the variable compression ratio mechanism to rotate, and includes a harmonic reducer fixed on the engine block unit, and the motor unit fixed on the rigid wheel in the harmonic reducer unit, the assembly method includes first installing the rigid wheel, flexible wheel and eccentric shaft, and then installing them into the engine block, Then install the wave generator, the timing cover and the motor unit, and complete the sealing between the motor unit and the timing cover with the installation of the motor unit. The assembling method of the invention can realize the assembling of the variable compression ratio driving structure, and the assembling is relatively simple, can improve the assembling precision, and is beneficial to the reliable setting of the driving structure.

Disclosed is a gas cutting guide device, comprising a clamping positioning mechanism and a variable-speed transmission mechanism (11). The clamping positioning mechanism comprises an end cap connection guide mechanism and a cutting torch mounting positioning mechanism. The end cap connection guide mechanism comprises a magnetic block (1) and a guide block (3). The magnetic block (1) is fixedly mounted on an end surface of an end cap (13) of a tube, and a threaded core shaft (102) is disposed at a central position of an end surface of the magnetic block (1). The guide block (3) is fitted on the threaded core shaft (102) and is rotatable about the threaded core shaft (102). The variable-speed transmission mechanism (11) is mounted on the threaded core shaft (102) of the magnetic block (1). The cutting torch mounting positioning mechanism is disposed on the guide block (3), and comprises a positioning block (7) disposed on the guide block (3) and slidable along the guide block (3) up and down and a clamping block (5) connected to the positioning block (7) and rotatable about the positioning block (7). The device is capable of guiding gas cutting of end caps of tubes with different diameters, limiting the axial movement of a cutting torch in the process of gas-cutting the end caps, and improving forming of gas-cut end surfaces of the tubes, thereby having high universality and efficiency.

The invention relates to the technical field of thermal treatment devices, and discloses a thermocouple flexible installing device which comprises a thermocouple protection part (4), an installing plate (1) and a fixing block (2), wherein the thermocouple protection part (4) is provided with a through hole capable of accommodating a thermocouple and comprises a first part and a second part which are mutually connected; the installing plate (1) is provided with a first hole; the fixing block (2) is installed on the installing plate (1) and is provided with a groove; the shape of the first part is matched with that of the groove so that the first part can move in the groove; and the second part penetrates through the first hole to extend out of one side of the installing plate (1). The invention can solve the problem that the thermocouple is easy to damage during use.

The invention provides a compressor which comprises a motor and a crankshaft. The motor and the crankshaft are arranged in the shell. An axial moving limiting device is arranged at the tail end of the crankshaft and comprises a supporting seat, a bearing and a pressing plate. The supporting seat is inlaid in the shell. The bearing is arranged on the supporting seat. The supporting seat is arranged on the crankshaft in a sleeving manner through the bearing. The pressing plate is fixedly arranged on the supporting seat. The pressing plate is used for limiting the axial movement of the bearing. The invention further relates to an air conditioner. According to the compressor and the air conditioner, the axial moving limiting device is arranged at the tail end of the crankshaft of the compressor, the problem of axial moving of the crankshaft is effectively solved through the bearing and the pressing plate of the axial moving limiting device, the problem of periodical noise vibration of the compressor under some conditions is solved, the axial moving limiting device is simple in structure, convenient to install and high in universality, the problems of radial deflection and eccentricity of the crankshaft are effectively solved, and the coaxility of the whole compressor is ensured.

The invention discloses an oil-electric dual-purpose handle for a hybrid motorcycle which is convenient to install and use, comprising an accelerator seat and a turning handle. A cable groove is arranged on the turning handle; A long strip of iron is installed, the acceleration seat covers the cable groove and the iron plate on the turning handle, and a Hall sensor corresponding to the iron plate is installed on the hole wall of the accelerator seat. The Hall sensor is controlled by the signal line and the motor device connection. The acceleration seat is composed of an upper shell and a lower shell that are relatively open, the upper shell or the lower shell is provided with a positioning pin, and the handle tube is provided with a corresponding positioning hole. The handle is improved from the structure of the traditional motorcycle handle, and the modification is small. Whether it is electric or oil-driven, the acceleration is directly realized by turning the handle, and the acceleration mode of the traditional motorcycle driver is not changed at all. The electric structure part and the oil-action structure part of the handle are independent of each other, do not interfere and influence each other, and work reliably.

The invention discloses a laser focusing device, comprising: a connecting plate, a mounting seat connected to the connecting plate, a lens seat installed in the hollow inner cavity of the connecting plate and the mounting seat and used for fixing a focusing mirror, and mounted inside the mounting seat The adapter sleeve, the protective glass seat placed at the lower end of the adapter sleeve and connected to the adapter sleeve, the gas nozzle connection sleeve connected under the protective glass seat and the gas nozzle connected to the gas nozzle connection sleeve, wherein the adapter sleeve A magnetic part is installed on the upper surface, and a Hall element is installed on the lower surface of the connecting plate opposite to the adapter sleeve. The Hall element is located above the magnetic part and there is a gap between it and the magnetic part. The Hall element is used to sense the magnetic field of the magnetic part. intensity and generate a trigger signal when the distance from the magnet changes. The laser focusing device has an anti-collision function, which can effectively prevent radial and axial collisions from damaging the components of the device.

The invention discloses a winch rope guider. The winch rope guider comprises a rope guider barrel and a rope guider base. Retaining flanges are arranged at the two ends of the rope guider barrel correspondingly. The rope guider base is of a cylinder-shaped tubular structure. A slide rail penetrates through the interior of the rope guider base in the axis direction of the rope guider base. A mounting sleeve is arranged on the outer circumferential surface of the rope guider base. A lead screw nut is arranged in the mounting sleeve. The outer circumferential surface of the rope guider base is sleeved with the inner circumferential surface of the rope guider barrel through bearings. Rope guider end covers are arranged at the two ends of the rope guider base correspondingly. Three rollers arearranged on each of the two ends of the rope guider base and make contact with three end surfaces of the slide rail correspondingly. A lead screw matched with the lead screw nut is arranged on the other end surface of the slide rail. By means of the winch rope guider according to the design, the application range of the rope guider is expanded, the service life of a rope is prolonged, and the ropeguiding effect is improved.

The invention discloses an air inlet phase continuously adjustable device for a single-cylinder and single-overhead-camshaft engine. The air inlet phase continuously adjustable device comprises a cylinder cover (1), a phase adjuster assembly (2), an air exhaust camshaft (3) and an air inlet camshaft (4), wherein the right side of a chain wheel chamber (11) is provided with a camshaft support boss (12); the phase adjuster assembly (2) is arranged in the chain wheel chamber (11), and is supported through a first bearing seat (13); the air exhaust camshaft (3) and the air inlet camshaft (4) can rotate relatively; and the camshaft support boss (12) is provided with a first oil supply hole (16) and a second oil supply hole (17). The phase adjuster assembly is arranged in the space of the chain wheel chamber of the cylinder cover, so that the limit of the spatial structure of the cylinder cover when the phase adjuster assembly is arranged between air inlet and exhaust cams is avoided, and the arrangement of a vane type continuously variable air distribution mechanism can be realized under the condition of slightly changing the engine cylinder cover.