32results about How to "Good fit and tightness" patented technology

The invention discloses a precise tiny electric spark processing method for an outer conical surface and an inner conical surface of a needle valve body of an oil nozzle coupling member of a diesel engine, belonging to the technical field of special processing. The precise processing method comprises the following steps of: processing the outer conical surface of the needle valve by adopting a wire electrode moving and processing method, wherein needle valves with different conical angles can be processed through adjusting the moving angle of the electrode or the moving speed of a rotating main shaft mechanism and a wire electrode moving mechanism; and using an another electrode to process the inner conical surface of the needle valve body by adopting the tiny electric spark processing method, wherein the shape of the another electrode is consistent with that of the outer conical surface of the needle valve. The precise tiny electric spark processing method disclosed by the invention has the characteristics of simple processing device, high processing accuracy and high sealing performance of a processed conical surface; and a better processing method is provided to process the needle valve of the oil nozzle coupling member and the conical surfaces of the needle valve body.

The invention discloses a bridge rotating body structure. The bridge rotating body structure comprises a stainless steel sliding plate, wherein connecting plates are arranged, at positions close to two side surfaces, on the upper surface of the stainless steel sliding plate, the bottoms of the connecting plates and the stainless steel sliding plate are movably connected, a stop block is installed between the two connecting plates, the two ends of the stop block extend into the connecting plates, the lower surface of the stainless steel sliding plate is connected with a protection plate, the protection plate and the stainless steel sliding plate are connected through a built-in sliding groove, supporting columns are installed, at positions close to two side surfaces, on the lower surface of the protection plate, the tops of the supporting columns are fixedly arranged on the protection plate, the bottoms of the supporting columns are fixedly arranged on a wear-resistant plate, and a steel structure plate is built in the wear-resistant plate. The bridge rotating body structure has the advantages that the clearance fit tightness is good, the friction coefficient can be effectively reduced, the horizontal rotation stability is guaranteed, the purpose that the vertical rotation can be positioned during presetting an angle is achieved, the bridge is prevented from exceeding the preset angle and better wear resistance and shock absorbing effects can be achieved.

The invention relates to a pressure-limiting venting auxiliary brake valve device with a channeled drive shaft. The pressure-limiting venting auxiliary brake valve device comprises a valve body, a disk, a support device, a pressure adjusting device, and a pressure relief opening device. A fixed through hole is reserved on the valve body. The drive shaft penetrates the fixed through hole to fix the disk in the inner cavity of the valve body. The disk is provided with a fixed notch at the edge. The end, penetrating the fixed through hole, of the drive shaft is provided with a fixed groove passing a circle center and two milling edges. The width of the fixed groove is larger than the thickness of the disk at the bottom of the fixed notch. The distance between the two milling edges is smaller than the width of the fixed notch. The fixed notch is inserted into the fixed groove to fixedly connect the disk and the drive shaft through rivets. The pressure-limiting venting auxiliary brake valve device is compact in structure, can effectively control motion travel of the piston tappet and improve exhaust back pressure of an engine at low speed, guarantees low resistance of reciprocating motion of the piston tappet, prevents failure of an inner spring due to high temperature, and enables service life of the auxiliary brake valve device to be prolonged.

The invention relates to a pressure-limiting and air-releasing auxiliary brake valve device with a piston tappet sleeve, which includes a valve body; a butterfly plate; a supporting device; a pressure regulating device; a pressure relief port device; The tappet sleeve, the piston tappet sleeve includes: the piston tappet part and the piston sleeve part are formed integrally; To move with different air pressure, the end inserted into the support groove is an end face; the piston sleeve part is a circular cup-shaped body, and the piston tappet part and the piston sleeve part are concentric. The invention has a compact structure, effectively controls the movement stroke of the piston tappet sleeve; increases the exhaust back pressure value at low and medium speeds of the engine; ensures that the resistance of the piston tappet sleeve during reciprocating motion is small, prevents the inner spring from failing due to high temperature, and makes the auxiliary The brake valve unit has a longer service life.

The invention provides a pressure limiting and air leaking auxiliary brake valve device with a support guide sleeve. The pressure limiting and air leaking auxiliary brake valve device with the support guide sleeve comprises a valve body, a butterfly sheet, a support device, a pressure regulating device and a pressure leaking port device, wherein a fixed through hole is formed on the valve body; a driving shaft passes through the fixed through hole of the valve body, and the butterfly sheet is fixed in an inner cavity of the valve body, and a fixed notch is formed on the edge of the butterfly sheet; a support hole is also formed on the valve body and is positioned on the valve body of the opposite part of the fixed through hole, and the support hole and the fixed hole are concentric; a support groove is formed on the butterfly sheet and is a round ladder-shaped groove; the support device is a cylindrical guide sleeve which is fixed in the support hole of the valve body; and the guide sleeve protrudes and extends into the inner cavity of the valve body, and is correspondingly inserted in the support groove of the butterfly sheet. The pressure limiting and air leaking auxiliary brake valve device with the support guide sleeve provided by the invention is compact in structure, and effectively controls the motion stroke of a piston tappet, improves the air exhaust back pressure value of an engine at middle and low speeds, guarantees the resistance of the piston tappet in reciprocating motion to be small, prevents an inner spring from being invalid because of high temperature, and enables the service life of the auxiliary brake valve device to be long.

The present invention proposes an air-conditioning cabinet and a control method for the air-conditioning cabinet, wherein the air-conditioning cabinet includes: a housing, at least one air duct is formed in the housing; a positive air outlet structure, having a positive air outlet connected to an air duct , the positive air outlet structure is connected with a first rotating structure; Rotating structure; wherein the positive air outlet structure includes a positive air outlet frame, the positive air outlet frame includes a windshield, the windshield forms a positive air outlet, and the housing forms a relief port that matches the positive air outlet. The first rotating structure It includes the first drive motor, the first driving gear, and the ring gear. The ring gear is fixedly connected to the positive air outlet frame. The first driving gear meshes with the ring gear to drive the positive air outlet frame to rotate in the housing so that the positive air outlet faces the rear or make the windshield block the abdication opening. The air conditioning cabinet machine of the present invention has good air conditioning effect and simple and stable structure.

The invention relates to a pressure-limiting air relief auxiliary brake valve device with an end face seal ring. The pressure-limiting air relief auxiliary brake valve device comprises a valve body, a butterfly piece, a supporting device, a pressure regulating device and a pressure relief port device, wherein the valve body is provided with a fixing through hole, a driving shaft penetrates the fixing through hole of the valve body to fix the butterfly piece in the valve body, a fixing gap and a supporting groove are respectively formed in the butterfly piece, the pressure regulating device comprises a piston tappet rod, the piston tappet rod comprises a column body and the end face seal ring, the column body is inserted into the supporting device, the end face seal ring is located between the supporting device and the supporting groove and driven to move by different air pressures transferred by the pressure relief port device. The pressure-limiting air relief auxiliary brake valve device further comprises a seal spring for adjusting the position of the end face seal ring portion. The pressure-limiting air relief auxiliary brake valve device is compact in structure, effectively controls a movement stroke of the piston tappet rod, improves an exhaust back pressure value of a large engine at medium-low speed, ensures small resistance when the piston tappet rod performs reciprocating motion and prevents the inside spring from being invalid due to high temperature, and the service life of the auxiliary brake valve device is prolonged.

The invention discloses a pressure limiting and air leaking auxiliary brake valve device with a circular-arc-shaped pressure leaking port. The pressure limiting and air leaking auxiliary brake valve device with the circular-arc-shaped pressure leaking port comprises a valve body, a butterfly sheet, a support device and a pressure regulating device; a support groove of the butterfly sheet is a circular ladder-shaped groove, a first ladder, a second ladder and a third ladder are respectively arranged from the outer edge of the butterfly sheet, and the inner diameters are sequentially decreased; the pressure leaking port device comprises a first pressure leaking port and a second pressure leaking port, wherein the first pressure leaking port is positioned on the groove wall of a third ladder of the support groove at one side of an air intake cavity of the butterfly sheet; the second pressure leaking port is positioned on the groove wall of a first ladder of the support groove at one side of an air exhaust cavity of the butterfly sheet; a channel positioned between the first pressure leaking port and the second pressure leaking port is in a zigzag shape; the first pressure leaking port and the second pressure leaking port are strip-shaped; and circular-arc-shaped through holes are formed at two ends of the first pressure leaking port and the second pressure leaking port. The pressure limiting and air leaking auxiliary brake valve device provided by the invention is compact in structure, and effectively controls the motion stroke of a piston tappet rod, improves the air exhaust back pressure value of an engine at the middle and low speeds, guarantees the small resistance of the tappet rod in reciprocating operation, prevents an inner spring from being invalid because of high temperature, thus the service life of an auxiliary brake valve device is long.

The invention relates to a pressure-limiting venting auxiliary brake valve device with a piston tappet. The pressure-limiting venting auxiliary brake valve device comprises a valve body, a disk, a support device, a pressure adjusting device, and a pressure relief opening device. A fixed through hole is reserved on the valve body. A drive shaft penetrates the fixed through hole to fix the disk in the inner cavity of the valve body. The disk is provided with a fixed notch and a support groove. The pressure adjusting device comprises the cylindrical piston tappet. One end of the piston tappet passes through the support device and protrudes into the support groove. The piston tappet is disposed between the support device and the support groove and bears different pressures transmitted from the pressure relief opening device to move. The end, inserted into the support groove, of the piston tappet is a planar cone. The pressure limiting venting auxiliary brake valve device is compact in structure, can effectively control motion travel of the piston tappet and improve exhaust back pressure of an engine at low speed, guarantees low resistance of reciprocating motion of the piston tappet, prevents failure of an inner spring due to high temperature, and enables service life of the auxiliary brake valve device to be prolonged.

The invention provides a cabinet air conditioner and an air outlet control method of the cabinet air conditioner. The cabinet air conditioner comprises a shell, a front air outlet structure and a top air outlet structure, wherein at least one air duct is formed in the shell; the front air outlet structure is provided with a front air outlet communicating with the air duct and is connected with a first rotating structure; and the top air outlet structure is arranged at the upper end of the shell and provided with a top air outlet communicating with the air duct, and the top air outlet structure is connected with a second rotating structure. The front air outlet structure comprises a front air outlet frame. The front air outlet frame comprises an air shield which is formed at the front air outlet. A receding hole matched with the front air outlet is formed in the shell. The first rotating structure comprises a first driving motor, a first driving gear and a driven gear, wherein the first driving motor, the first driving gear and the driven gear are arranged at the upper end of the front air outlet frame, the driven gear is fixedly connected to the front air outlet frame, the first driving gear is engaged with the driven gear, and the front air outlet is driven to right face the receding hole or the air shield is made to block the receding hole. The air-conditioning effect of the cabinet air conditioner is good, and the air outlet sealing effect is good.

The invention relates to a pressure-limiting venting auxiliary brake valve device with a concave piston sleeve. The pressure-limiting venting auxiliary brake valve device comprises a valve body, a disk, a support device, a pressure adjusting device, and a pressure relief opening device. A drive shaft penetrates a fixed through hole of the valve body to fix the disk in the inner cavity of the valve body. The pressure-adjusting device comprises a shell, a piston tappet, an inner spring, a screw plug and the piston sleeve. The piston sleeve is in a circular cup shape and disposed in the shell of the pressure adjusting device. One outer side of the cup bottom of the piston sleeve is contacted with the piston tappet. One inner side of the cup bottom of the piston sleeve is contacted with the inner spring. The contact side of the piston sleeve with the piston tappet is lower in the middle and higher in the outer edge. The pressure-limiting venting auxiliary brake valve device is compact in structure, can effectively control motion travel of the piston tappet and improve exhaust back pressure of an engine at low speed, guarantees low resistance of reciprocating motion of the piston tappet, prevents failure of an inner spring due to high temperature, and enables service life of the auxiliary brake valve device to be prolonged.

The invention relates to a pressure-limiting air escape auxiliary brake valve device with a piston tappet with an end face. The pressure-limiting air escape auxiliary brake valve device comprises a valve body, a disc, a support device, a pressure regulator and a pressure relief opening device, a fixing through hole is arranged on the valve body, a driving shaft penetrates through the fixing hole of the valve body to fix the disc in the valve body, a fixing notch and a support groove are arranged on the disc, the pressure regulator comprises the piston tappet which is a cylinder, one end of the piston tappet passes through the support device to extend into the support groove in a projecting manner, the piston tappet is arranged between the support device and the support groove and receives different air pressure transmitted by the pressure relief opening device for movement, and one end of the piston tappet inserted into the support groove serves as an end face. The pressure-limiting air escape auxiliary brake valve device is compact in structure, and movement stroke of the piston tappet is effectively controlled; exhaust backpressure values of an engine at medium and low speeds are decreased; and small resistance during reciprocation of the piston tappet is guaranteed, an inner spring is prevented from failure caused by high temperature, and accordingly the service life of the auxiliary brake valve device is longer.

The invention relates to a pressure-limiting and air-releasing auxiliary brake valve device with air holes in a piston tappet sleeve, comprising a valve body; a butterfly plate; a supporting device; a pressure regulating device; a pressure relief port device; the pressure regulating device includes a The piston tappet sleeve, the piston tappet sleeve includes: the piston tappet part and the piston sleeve part are integrally formed; the piston tappet part is a cylinder, and one end protrudes into the support groove through the support device to receive the pressure relief port device Different air pressures are transmitted to move, and the end inserted into the supporting groove is an end face; in addition, a pressure-stabilizing vent hole is opened on the valve body on the side of the air intake chamber, which communicates with the air intake chamber and the pressure regulating device. The invention has a compact structure, effectively controls the movement stroke of the piston tappet sleeve; improves the exhaust back pressure value at low and medium speeds of the engine; ensures that the resistance of the piston tappet sleeve during reciprocating motion is small, prevents the inner spring from failing due to high temperature, and makes the auxiliary The brake valve unit has a longer service life.