55results about How to "Realize axial limit" patented technology

The invention provides a limiting type rocket separation impulse providing device based on a spring. The limiting type rocket separation impulse providing device comprises a sleeve and an ejector rod located in the sleeve, one end of the ejector rod extends out of the sleeve, the outer side of the other end of the ejector rod is sleeved with the spring, and a polygonal limiting section is arranged on the outer side wall of the ejector rod. A cavity section matched with the polygonal limiting section in shape is arranged in an inner cavity of the sleeve, limiting holes capable of being matched with a positioning pin are formed in the outer side wall of the ejector rod and the side wall of the sleeve respectively, and the center distance between the limiting hole in the ejector rod and the limiting hole in the sleeve is equal to the working stroke of the spring. The device can ensure that the ejector rod only moves in the axial direction to push the separation section of the rocket along with gradual release of the compression spring, and therefore separation impulse loss is prevented.

The invention provides a check valve for controlling air current to flow in one direction on an engine, which consists of an upper shell, a lower shell, a membrane and a support sheet. The support sheet and the membrane are matched with a positioning boss of the upper shell through a mounting hole and are matched with a positioning hole of the lower shell to realize axial limitation of the membrane through the positioning boss of the upper shell. Gas acts upon the membrane from an air inlet of the upper shell to an air pore on the support sheet, the membrane carries out structure deformation under the action of the air current to reserve a gap with the upper shell, and the air current passes through an air outlet of the lower shell to flow out through the gap to realize the flowing actionof positive air current of the check valve. When the gas flows reversely, the membrane cannot deform due to the action of the air current, the reversed air current is stopped by the matched sealing action of the membrane and the upper shell, and the membrane has favorable sealing performance on the reversed air current. The check valve has the advantages of simple structure composition, easy assembly, light weight and small volume, can ensure that the air current is smooth when the air current positively flows, and has favorable airtightness when the air current reversely flows, thereby the requirements on related performance are satisfied.

The invention relates to a bearing dismantling device, comprising a pull rod, a press ring and a regulating pad; the press ring is fixedly arranged in the dismantling direction of a bearing outer ring, the end surface of the press ring is matched with the that of a part provided with a bearing bush, a step arranged on the press ring is matched with the end surface of the bearing bush, the pull rod is in clearance fit with the bottom of the press ring, a disc is arranged at one end of the pull rod, the end surface of the disc is in contact with the end surface of the bearing outer ring and can move toward the dismantling direction along with the pull rod. The axial limiting of the bearing bush and the part provided with the bush during the disassembling of the bearing outer ring is realized, the bearing bush is prevented from being separated under the action of a disassembling force, the use safety is ensured, unnecessary repair or cost loss caused by replacement of a new product is reduced, and the production period is shortened.

The installation method of the torsion bar assembly is characterized in that the installation hole corresponding to the torsion bar assembly is processed on the frame of the bogie, the torsion bar assembly is crossed in the installation hole, and the torsion bar assembly and the installation hole are connected by interference fit A stopper for axially limiting the torsion bar assembly is arranged in the installation hole, and the stopper is in close contact with the torsion bar assembly. The present invention installs the torsion bar assembly directly on the frame, saves the supporting seat assembly in the anti-rolling torsion bar system, simplifies the structure of the anti-rolling torsion bar assembly, reduces its production cost, and ensures that the support seat assembly is omitted The use reliability of the torsion bar assembly is not affected, the connection between the torsion bar assembly and the frame is easy to realize, and the connection method is simpler, which not only can effectively reduce the labor intensity of installing the torsion bar assembly on the frame, but also the torsion bar assembly and the frame The space occupation rate of the connecting structure is small, and the structure is highly compact. The invention also provides a torsion bar assembly installation structure.

The invention discloses a connection structure and relates to the technical field of connection accessories. The connection structure is used to connect the front support of the engine with the vehicle frame. The connection structure includes: the front support has a mounting part, and an elongated hole is formed through the mounting part; The frame is connected, and the other end is protruded with a protruding post, and the side wall of the protruding post away from the end of the connecting seat protrudes with a first protruding block, and the protruding post penetrates the elongated hole, and the The first protrusion cooperates with the edge of the elongated hole to axially limit the protrusion. The invention does not need to use bolts, reduces the requirement for assembly space, has a simple structure, and solves the problem that the connecting seat and the nuts supported in front of the engine cannot be assembled and tightened, which affects the assembly efficiency and assembly quality. In addition, in the connection structure proposed by the present invention, when the protrusion is matched with the elongated hole, it is not easy to loosen under complex road conditions and has strong stability.

The invention discloses a crown and a wrist-worn device with the crown. The crown comprises: a button rod provided with an external thread; The first jack for rod insertion; the first captive nut fixed on the body; the second captive nut that is unidirectionally locked with the first captive nut, and the second captive nut is provided for connecting with the outer The internal threads of the thread fit connection, the screwing direction of the external threads and the internal threads are the same as the locking directions of the first captive nut and the second captive nut. The second captive nut can be pre-assembled on the body through the first captive nut, and then the key rod is installed. The existence of the second captive nut does not affect the assembly of the key rod, and can realize the axial direction of the key rod The position is limited to achieve the effect of blindly installing the key rod. Compared with the prior art, the assembly is convenient and the complexity of assembly is reduced. The wrist-worn device includes the above-mentioned crown and has the above-mentioned beneficial effects.

The invention provides cleaning equipment. The cleaning equipment comprises a main equipment body, an installing mechanism used for making the top of the main equipment body cooperatively installed ona water draining port at the groove bottom of a water groove from the outer portion of the water groove, a washing mechanism installed on the main equipment body and communicated with a water supplying source through a water inlet, wherein the washing mechanism has a washing part capable of extending into the water groove through the water draining port at the groove bottom, and the washing partis used for cleaning a to-be-cleaned object in the water groove. The top of the main equipment body is cooperatively installed on the water draining port at the groove bottom of the water groove through the installing mechanism, after the decorating is completed, the main equipment body of the cleaning equipment can be directly installed at the bottom of the water groove according to the need, onthe one hand, immediate installing can be achieved, and the using is convenient, on the other hand, the main equipment body is installed at the bottom of the water groove, washing water in the water groove can be effectively and fully drained, and a good water draining effect is achieved.

The invention relates to a limiting device of a driving half axle bearing, and relates to the technical field of automobiles, the limiting device comprises a support body and a sealing plate, the support body is provided with a first arc-shaped groove with an upward opening, and one side of the first arc-shaped groove protrudes upwards in the circumferential direction of the first arc-shaped groove to form a first limiting plate; one end of the sealing plate is rotatably connected with one end of the bracket main body, and the other end is detachably connected with the bracket main body; the sealing plate is provided with a second arc-shaped groove with a downward opening, one side of the second arc-shaped groove protrudes downwards in the circumferential direction of the second arc-shaped groove to form a second limiting plate, and the second limiting plate and the first limiting plate are arranged on the two sides of the support body respectively. During use, the sealing plate is connected with the support body, the first arc-shaped groove and the second arc-shaped groove jointly form a limiting space used for limiting radial movement of the bearing, the bearing is located in the limiting space, and the first limiting plate and the second limiting plate abut against the two sides of the bearing respectively so as to limit axial movement of the bearing. The support body and the sealing plate can serve as an integral part to be subpackaged offline in advance.

The invention belongs to the field of capacitance sensor assembly and provides an assembly device and method for a single-plate capacitance sensor. Wherein, the assembly device includes a base plate, a sensor fixing table, a gantry frame, a first differential head, a correction block, a flexible ring and a flexible disk; the sensor fixing table and the gantry frame are both installed on the base plate; the sensor fixing table is arranged on Below the gantry frame; the correction block is arranged on the sensor to be assembled, the first differential head is installed on the gantry frame and set opposite to the correction block; the two sides of the flexible disk are respectively connected to the correction block and the measuring pole of the sensor, To realize the longitudinal flexible assembly of the measuring pole; the two sides of the flexible ring are respectively connected with the calibration block and the equipotential ring of the sensor to realize the longitudinal flexible assembly of the equipotential ring; Tightly apply pressure to the calibration block so that the sensor measuring pole, the equipotential ring and the shielding ring are assembled coaxially and the bottom surfaces of the three are on the same level, so as to ensure the smoothness of the sensor surface.