32results about How to "Increase axial pressure" patented technology

The invention discloses a spindle system for realizing friction surfacing with a shaft shoulder. The spindle system comprises a round bar consumable, a cylindrical shell, a hollow spindle, a shaft sleeve, a self-locking clamping mechanism and a rigid shaft sleeve, wherein the hollow spindle is coaxial with the cylindrical shell and is arranged in the cylindrical shell, and the shaft sleeve slides up and down along an inner hole of the hollow spindle; and the self-locking clamping mechanism is fixed to the lower end of the hollow spindle. The upper end of the round bar consumable is fixed to the shaft sleeve, and the lower end of the round bar consumable contacts with the surface of a workpiece through the self-locking clamping mechanism and the rigid shaft sleeve. When the hollow spindle rotates at high speed, the round bar consumable and the rigid shaft sleeve are driven by the shaft sleeve and the self-locking clamping mechanism at the lower end to rotate at high speed, and the shaft sleeve moves down along the hollow spindle at the same time, so that the round bar consumable rotates at high speed while can move down along the axial direction. The rigid shaft sleeve plays a role of friction and extrusion without consuming the shaft shoulder, and therefore the friction surfacing process with the shaft shoulder is realized. The spindle system can improve the use ratio of the round bar consumable and effectively eliminates the weak connection defect of the edge of a traditional friction surfacing layer, and thereby obtaining the friction surfacing layer with a good mechanical property.

The invention provides a composite roll. The composite roll comprises a roll shaft and roll rings arranged on the roll shaft in a sleeving manner. The roll shaft and the roll rings are in clearance fit. A nut is arranged at the position, on one side of each roll ring, of the roll shaft and is closely attached to the corresponding roll ring, and axial pressing force is applied to the roll rings by the nut. The invention further relates to a preparation method of the above composite roll. The preparation method comprises the following steps that A, the roll rings are arranged on the roll shaft in the sleeving manner, and the roll rings and the roll shaft are in clearance fit; B, the nuts are screwed in and mounted on one side of the roll shaft, and the nuts are attached to the roll rings in the axial direction; C, axial pressure is applied to the end faces of the roll rings, the roll rings can move in the axial direction, and the distance between each nut and the corresponding roll ring is increased; D, each nut is rotated to move towards the corresponding roll ring and is closely attached to the corresponding roll ring; E, the axial pressure is removed; and F, the nuts apply the axial pressing force to the end faces of the roll rings, and the roll rings are fixed to the roll shaft. The rolling torque is transmitted.

The invention relates to a transformer body structure, in particular to a body structure of an open type winding iron core transformer. The transformer body structure comprises a magnetic flux loop formed by splicing multiple silicon steel sheets, an upper clamping part arranged on the upper portion of the magnetic flux loop, a lower clamping part arranged on the lower portion of the magnetic flux loop and two side plates positioned on the left and right sides of the body structure, the upper clamping part comprises an upper body and upper fixed plates fixedly arranged on the left and right sides of the upper body, the lower clamping part comprises a lower body and lower fixed plates fixedly arranged on the left and right sides of the lower body, the side plates are detachable and connected with the upper fixed plates and the lower fixed plates respectively, a storage space of the magnetic flux loop is formed among the upper clamping part, the two side plates and the lower clamping part, and a connecting mechanism capable of being in detachable connection is arranged between the upper clamping part and the lower clamping part. The transformer body structure is compact in structure, high in strength, small in noise and high in short-circuit resistance.

Projections protruding towards a cam plate and a disc are provided on both axial side surfaces of the retainer at a plurality of positions at which phases of the projections in the circumferential direction are offset from pockets. One axial direction surface of the cam plate and the disc are formed with concave portions at portions facing the respective projections. The concave portions have an axial depth deepest at a center portion thereof in the circumferential direction and becoming shallower towards both end portions thereof.

The invention discloses a milling cutter special for a numerical control milling machine. The milling cutter comprises a cutter handle and a cutter bit. The cutter bit is provided with a connecting groove. A threaded hole is formed in the connecting groove. A clamping connecting groove is formed in the cutter handle. An extension section is arranged between the cutter handle and the cutter bit. The two end portions of the extension section are provided with matching grooves. A connecting block is arranged between the corresponding matching groove and the connecting groove, and a connecting block is arranged between the corresponding matching groove and the clamping connecting groove. The connecting blocks are provided with installation holes matched with the threaded hole. The corresponding connecting block and the cutter handle are connected through a first fastener matched with the threaded hole, and the corresponding connecting block and the cutter bit are connected through a first fastener matched with the threaded hole. The extension section is provided with a center hole used for being connected with the cutter bit. The extension section and the cutter bit are connected by arranging a second fastener matched with the center hole. According to the purpose, the milling cutter special for the numerical control milling machine is provided, it is ensured that small parts can still be machined in the situation that the distance between a main shaft and a clamp is increased by increasing the overall length of the milling cutter, the position of the main shaft does not need to be repeatedly adjusted, the machining process is simplified, and the work efficiency is improved.

A drilling machine for exploiting shale gas comprises a drill stem, a drill bit, a power mechanism and a support. The drill bit is composed of a drill bit body and a plurality of cones arranged on the drill bit body, the drill bit body comprises a cylindrical sleeve and a flange connecting end, the flange connecting end is connected with one end of the drill stem through a connecting module, the drill stem is of a hollow shaft structure, a spiral mechanism is arranged in an inner cylindrical hole in the drill stem, one end of a main shaft of the spiral mechanism is connected with an output shaft of a drive motor through a transmission component, the other end of the main shaft is arranged in the inner cylindrical hole in the drill stem through a supporting mechanism, the main shaft is of a hollow shaft structure, and a cooling liquid injection device and a cooling liquid sprayer are arranged on the main shaft. According to the drilling machine, the drill bit mechanism and the connecting module of the drill bit and the drill stem are precisely designed, the spiral mechanism is arranged in the inner cavity of the vertical drill stem, rock debris is discharged through sliding friction, high-pressure flushing liquid is of no need, a large amount of energy is saved, and safety and environment friendliness of the drilling machine are greatly improved.

The invention discloses a test method for high-voltage electric pulse in-situ fracturing of coal seam cracks and real-time nondestructive observation. The test method comprises the following steps: a manufacturing a cylindrical test piece; b installing the test piece in a circular-tube-shaped pressure chamber, connecting pipelines between systems, including a confining pressure loading module and an axial pressure loading module; c operating the axial pressure loading module and the confining pressure loading module in sequence, and applying axial pressure and confining pressure to the test piece; d operating a high-voltage electric pulse fracturing operation system to perform high-voltage pulse discharge, and fracturing the test piece; and e operating an in-situ CT scanning system, performing in-situ scanning on the test piece, and monitoring the internal change of the test piece. The step e can be randomly selected to be carried out after one or more of the steps b, c and d, the in-situ real-time lossless scanning monitoring of the same test piece is realized by operating the step e for many times in the test process, and the real-time lossless observation of the high-voltage electric pulse in-situ fracturing coal seam cracks can be carried out.

The invention discloses a pressure-bearing contact type shaft seal ring which comprises an outer ring metal framework, an inner ring metal framework, a seal ring main body and a seal ring, wherein the seal ring main body is made of an elastomeric material. The pressure-bearing contact type shaft seal ring is characterized in that a corrugated structural segment is arranged between the outer ring metal framework and a central inner ring, an annular raised-tooth spring is installed on the end surface of an inner flange of the inner ring metal framework or a cylindrical spring is installed on the end surface of an outer flange, the seal ring or a combined seal ring is installed in the central inner ring of the seal ring main body, and the corrugated structural segment is an M-shaped corrugated structural segment or an S-shaped corrugated structural segment. The seal ring still has good sealing performance under a pressure environment and also has simple manufacture, easy installation andlong working and use life.

The invention discloses a winding forming method of a composite material gas cylinder with inner grid ribs, and belongs to the technical field of gas cylinder structures. Composite material gas cylinder with inner grid ribs, including the outer layer of the gas cylinder and the inner layer of the grid; the outer layer of the gas cylinder and the inner layer of the grid are made of composite materials; the inner layer of the grid is in the shape of a bottle liner, and the grid The inner layer is a grid rib structure; the outer layer of the cylinder is wound and connected to the outside of the inner layer of the grid. It solves the technical problem that in the prior art, the gas cylinder adopts a plastic liner, resulting in a relatively thin overall structure and weak axial compression resistance; the gas cylinder adopts a metal liner, resulting in heavy overall weight and unable to meet the use requirements. In the present invention, a grid inner layer is arranged inside the outer layer of the gas cylinder, and the grid inner layer is a dense inner grid rib structure, which improves the axial compression resistance of the entire gas cylinder, and is made of composite materials to realize the gas cylinder lightweight.

The invention discloses a spindle system for realizing friction surfacing with a shaft shoulder. The spindle system comprises a round bar consumable, a cylindrical shell, a hollow spindle, a shaft sleeve, a self-locking clamping mechanism and a rigid shaft sleeve, wherein the hollow spindle is coaxial with the cylindrical shell and is arranged in the cylindrical shell, and the shaft sleeve slides up and down along an inner hole of the hollow spindle; and the self-locking clamping mechanism is fixed to the lower end of the hollow spindle. The upper end of the round bar consumable is fixed to the shaft sleeve, and the lower end of the round bar consumable contacts with the surface of a workpiece through the self-locking clamping mechanism and the rigid shaft sleeve. When the hollow spindle rotates at high speed, the round bar consumable and the rigid shaft sleeve are driven by the shaft sleeve and the self-locking clamping mechanism at the lower end to rotate at high speed, and the shaft sleeve moves down along the hollow spindle at the same time, so that the round bar consumable rotates at high speed while can move down along the axial direction. The rigid shaft sleeve plays a role of friction and extrusion without consuming the shaft shoulder, and therefore the friction surfacing process with the shaft shoulder is realized. The spindle system can improve the use ratio of the round bar consumable and effectively eliminates the weak connection defect of the edge of a traditional friction surfacing layer, and thereby obtaining the friction surfacing layer with a good mechanical property.

An apparatus and method for forming a design on an expanded bead foam article such as an exercise roller is provided.

The invention discloses a high-voltage electric pulse in-situ anti-permeability gas-bearing reservoir two-phase seepage test device, comprising a stress loading system, a high-voltage electric pulse fracturing operating system and a water-gas two-phase seepage system; the stress loading system It includes a pressure chamber, an axial pressure loading module and a confining pressure loading module; the high-voltage electric pulse fracturing operation system includes a high-voltage electric pulse generation module, a high-voltage electric pulse signal monitoring module and a protection module; the water-gas two-phase seepage flow The system includes a water-gas pressure loading module and a flow data acquisition module. By simulating the coal body test of electric pulse under different ground stress, different voltage and other conditions, and simulating the physical test of high-voltage electric pulse fracturing coal body under the action of multi-physics coupling, the in-situ permeability enhancement of high-voltage electric pulse can be carried out. Reservoir two-phase seepage test.

The invention discloses a communication signal tower reinforcement device and reinforcement method. Disclosed is a method for improving the connection stability of reinforcement rods through a double-layered clamping structure, and using U-shaped clamping rods to make the reinforcement rods more closely fit the clamping structure. A reinforcing device and a reinforcing method for a structural adaptor to avoid torsion of the adaptor, characterized in that it comprises a length-adjustable reinforcing assembly, which is arranged at both ends of the reinforcing assembly and is used for connecting the reinforcing assembly to the main pipe flange of a signal tower. The connecting assembly and the tightening assembly for fastening the reinforcing assembly are characterized in that the tightening assembly can improve the connection stability of the reinforcing assembly, and the adapting assembly has a double support structure, which can prevent the adapting assembly itself from being twisted.

The invention discloses a water-lubricating thrust bearing of submersible motors for wells. The water-lubricating thrust bearing comprises a thrust plate, a disc bearing base, a bearing base support, a bearing bush, a bearing plate and a plastic inner grinding ring; the bearing plate is fixed to the disc bearing base through a double-screw bolt; the bearing bush is composed of a plurality of independent fan-shaped bearing slide blocks, the upper planes of the fan-shaped bearing slide blocks are smooth, spherical crown-shaped protrusions are arranged at the middle parts of the bottom surfaces of the fan-shaped bearing slide blocks, side wings extending out symmetrically are arranged on the straight sides of the two sides of each fan-shaped bearing slide block, a pair of slide block limiting columns and a slide block supporting column in the bearing plate limit and support the fan-shaped bearing slide blocks respectively, and the slide blocks can be flexible but cannot be separated through cooperation with the plastic inner grinding ring; the upper surfaces and the lower surfaces of the side wings of the fan-shaped bearing slide blocks have temperature difference when the side wings work and generate frictional heating, and therefore the edges of the side wings are slightly bent and generate gaps with the thrust plate, and maintenance of a lubricating water film can be reinforced; through the plastic inner grinding ring, the axial bearing capacity is high, the material cost is low, the water lubrication capacity is improved, the service life is prolonged, and the product quality is improved.

The invention discloses a high-voltage electric pulse in-situ anti-reflection gas-bearing reservoir two-phase seepage test device which comprises a stress loading system, a high-voltage electric pulse fracturing operation system and a water-gas two-phase seepage system; the stress loading system comprises a pressure chamber, an axial pressure loading module and a confining pressure loading module; the high-voltage electric pulse fracturing operation system comprises a high-voltage electric pulse generation module, a high-voltage electric pulse signal monitoring module and a protection module; the water-gas two-phase seepage system comprises a water-gas pressure loading module and a flow data acquisition module. The high-voltage electric pulse in-situ anti-reflection gas-bearing reservoir two-phase seepage test can be carried out by simulating an electric pulse action coal body test under the conditions of different ground stress, different voltages and the like and simulating a high-voltage electric pulse cracking coal body physical test under the multi-physical field coupling action.