6results about How to "Guaranteed axial positioning" patented technology

The utility model discloses a ball valve, including valve body, flow passage, ball and drive part. The valve body is equipped with filter assembly, including filter block and fixed part, is equipped with installation cavity on filter block, is equipped with filter screen in installation cavity. The arc rotation groove is equipped on filter block, and the flow passage department of valve body one side is equipped with limit stop, and the limit groove that communicates rotation groove is still equipped on filter block, and the fixed part is inserted in the junction of rotation groove and limit groove to fix filter block. The support frame is equipped on filter screen, and the outer periphery of support frame is equipped with support block, and the arc installation groove is equipped in filter block, and support block realizes support frame installation in the sliding of installation groove. The fixed ball and spring are equipped in installation groove, and spring drive fixed ball and support block on the cooperation locking of clamping groove. The fixed part includes locking frame, and is equipped with limit portion and abutting portion on it, and abutting portion abuts in rotation groove, and limit portion is inserted in the sealing groove on valve body. The utility model filter assembly convenient to dismount, and fixed reliable, is convenient for washing or replacement filter screen.

The utility model relates to the technical field of transmission gear shifting, and discloses a control device capable of axially positioning a hollow gear shifting shaft, a gear shifting interlocking assembly, the hollow gear shifting shaft and a transverse gear shifting rod are arranged in a shell of the control device; the hollow gear shifting shaft is arranged on the transverse gear shifting rod in a sleeving mode, the input end of the transverse gear shifting rod is connected with the input end of the booster, the gear shifting interlocking assembly is arranged on the hollow gear shifting shaft in a sleeving mode and connected with the transverse gear shifting rod through the hollow gear shifting shaft, and the threaded hole is formed in the top of the control device shell and internally connected with the stop screw in a threaded mode. The bottom of the stop screw is inserted into the hollow gear shifting shaft through the threaded hole in the top of the control device shell, so that the stop screw axially positions the hollow gear shifting shaft in the axial direction, the hollow gear shifting shaft is prevented from moving in the axial direction, and it is guaranteed that output force of the booster can be effectively transmitted to the gear shifting block.

The utility model discloses an inner rotor motor assembly comprising a gear shaft, the gear shaft is connected with a motor front cover and a gear support through first rolling bearings, and the position, between the two first rolling bearings, of the gear shaft is connected with a rotor through a one-way needle bearing. Gaps are reserved between the two ends of the one-way needle bearing and the two first rolling bearings and between the two ends of the rotor and the two first rolling bearings, and plane thrust bearings are fixed between the front end face of the rotor and the rear end face of the motor front cover and between the rear end face of the rotor and the front end face of the gear support. The utility model further discloses the hub motor. According to the scheme, the plane thrust bearings are arranged between the rotor and the motor front cover and between the gear support and the rotor, so that the effect of correcting the axial parallelism of the rotor and the gear shaft is achieved, the influence of unilateral magnetic pulling force between the stator and the rotor on the one-way needle bearing is restrained, and meanwhile axial positioning in the motor is guaranteed; the first rolling bearing on the gear shaft keeps a clearance state with the rotor, so that the rotor rotates smoothly.

The invention discloses a connecting structure of a main shaft and a gear box of a wind generating set and a using method, and belongs to the technical field of transmission of wind power generation gear boxes, the connecting structure comprises a fan main shaft and a gear box gear ring, and a primary planet carrier is arranged in the gear box gear ring; an internal spline is arranged at one end of the fan main shaft, an external spline is arranged at one end of the primary planet carrier, and the tooth crest of the internal spline is matched with the tooth root of the external spline; one end, away from the fan spindle, of the primary planet carrier is connected with a secondary planet carrier; a pressing plate is arranged on the side, away from the first-stage planet carrier, of the inner spline of the fan spindle and connected with the first-stage planet carrier, the first-stage planet carrier, the second-stage planet carrier and the pressing plate are provided with communicated lubricating oil ways, and the lubricating oil ways convey lubricating oil to the meshing position of the inner spline and the outer spline. By means of the connecting structure, the torque transmission capacity is greatly improved, and the stability and durability of connection between the main shaft of the generator set and the gearbox are improved.

The present application relates to a precast pile plug-in lock joint, comprising: an upper sleeve, a bottom end of which is provided with a plug rod, a bottom end of the plug rod is provided with a first connecting structure, an outer circumferential wall of the plug rod is provided with an outer lock piece capable of being elastically deformed in a radial direction, the outer lock piece is provided with a second connecting structure and a first combining surface; a lower sleeve, a top end of which is provided with an opening for inserting the plug rod, a bottom of the lower sleeve is provided with an inner lock piece capable of being elastically deformed in a radial direction, an inner wall of the inner lock piece is provided with a third connecting structure matched with the first connecting structure and a second combining surface matched with the first combining surface, and an inner wall of the lower sleeve is provided with a fourth connecting structure matched with the second connecting structure; after the plug rod is inserted into place, the first combining surface is attached to the second combining surface, so as to form double self-locking between the second connecting structure and the fourth connecting structure and between the third connecting structure and the first connecting structure when being pulled.

The present invention discloses a syringe and its adapter, wherein the adapter is a tubular structure, and the adapter includes a fixing part, a limiting part and a screw-on cap part which are sequentially distributed along the axial direction, the fixing part is used to cooperate with the outer wall of the syringe barrel, the limiting part is located on the inner side of the adapter and is used to limit and engage with the shoulder of the syringe barrel of the syringe, the screw-on cap part is used to surround the outer periphery of the cone of the syringe barrel and is provided with a locking structure for fixing the protective cap, and a fixing glue is provided between the inner wall of the fixing part and the outer wall of the syringe barrel. When the adapter of this scheme is assembled with the syringe, the fixing part cooperates with the outer wall of the syringe barrel to ensure coaxial positioning, the limiting part and the shoulder of the syringe barrel are limited and engaged to ensure the axial positioning of the adapter and the syringe, and at the same time, the fixing part and the outer wall of the syringe barrel are glued and fixedly connected by the fixing glue, which ensures the connection firmness between the adapter and the syringe barrel, makes the adapter not easy to loosen, and improves the reliability of the product.