CN214999408U - Shaft sleeve floating oil sealing structure of integrated motor - Google Patents

Abstract

The utility model discloses an integrated motor shaft sleeve floating oil sealing structure, wherein an output shaft and a slave shaft are connected with each other through two groups of double-hole shaft sleeves, and the double-hole shaft sleeves are provided with a sealing groove II, an oil discharging port, an oil discharging straight groove, a sealing ring II and a tetrafluoroethylene gasket; the integrated motor further comprises a matched shell, a sealing cover, an electromagnetic valve and a one-way overflow valve, wherein the shell is provided with a driving oil cavity, an oil inlet hole groove, an oil outlet hole groove, a sealing groove I, a pin hole, a long screw hole, an oil inlet, an overflow valve mounting hole, an electromagnetic valve mounting hole, a transition cavity, an overflow hole, a test port and an oil outlet. The utility model discloses a diplopore axle sleeve and seal structure thereof optimizes the sealed of output shaft, thereby leads oily comparatively coherent oil film of production simultaneously in seam crossing, further improves the leakproofness to avoid oil leakage and power loss.

Description

Shaft sleeve floating oil sealing structure of integrated motor

Technical Field

The utility model relates to a hydraulic system's gear motor technical field especially relates to an integrated motor's unsteady oil seal structure of axle sleeve.

Background

The modern engineering machinery generally adopts hydraulic transmission, and due to the characteristics of the hydraulic transmission and the relatively severe working environment and working condition of the engineering machinery, the heat generated by the system is not enough to be dissipated only by the surfaces of an oil tank, elements and pipe fittings. The hydraulic oil may deteriorate when working at an excessively high temperature, and oil residue and an oil tank coating are generated to be peeled off, so that a throttling port is blocked. At temperature, the viscosity and lubricity of the oil are reduced, which greatly shortens the service life of elements and accelerates the aging of components such as sealing elements, fillers, hoses, oil filters and the like. The heat dissipation function of the engineering machinery is realized by driving a cooling medium through a cooling device and absorbing or dissipating waste heat generated by a heat source of the engineering machinery, and a fan hydraulic motor is a common air cooling mode.

In the existing hydraulic system of the engineering machinery, a hydraulically driven gear motor is used as an executing element of the hydraulic system, oil supply required by the gear motor is often directly provided by the hydraulic system, and in many cases, the oil pressure of the oil supply of the hydraulic system greatly exceeds the oil pressure required by the rotation of the gear motor, so that the defects of gear shaft overload, excessive wear of a friction pair and the like are caused.

In addition, in order to make the gear motor better cooperate with the heat dissipation control of the hydraulic system, some control valve elements, such as a temperature control valve, an overflow valve, a check valve, an overload prevention valve, etc., are often required to be added, and these control valve elements and the gear motor together form a servo control system of the hydraulic system.

Based on this, the utility model discloses try to integrate above-mentioned control flap component to the gear motor in simultaneously to provide corresponding mounting structure and course of working, just realize transshipping automatic off-load function in an organic whole with the drive collection in order to realize controlling.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcomings existing in the prior art, and providing a shaft sleeve floating oil sealing structure of an integrated motor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a shaft sleeve floating oil sealing structure of an integrated motor comprises an output gear and a slave gear which are meshed with each other, wherein the integrated motor comprises a shell, a sealing cover arranged at the front end of the shell, and a solenoid valve and a one-way overflow valve which are inserted on the shell;

the sealing structure comprises a shell, a front end face of the shell, four petal-shaped cavity structures, a sealing groove I, a sealing ring I, pin holes and long screw holes, wherein the front end face of the shell is positioned outside the four petal-shaped cavity structures;

the output gear is meshed with the slave gear, the outer contours of the output gear and the slave gear are respectively sealed with the inner side wall of the driving oil cavity through an oil film of hydraulic oil, the output gear is fixedly sleeved in the middle of the output shaft, the slave gear is fixedly sleeved in the middle of the slave shaft, the driving oil cavity is provided with a circular groove which is movably clamped with the output shaft and the slave shaft respectively, one side, close to the shell, of the sealing cover is provided with a circular groove which is movably clamped with the slave shaft, the middle of the sealing cover is provided with a bearing hole, the bearing hole is in interference clamping connection with the outer ring wall of the bearing, the inner ring wall of the bearing is in transition fit clamping connection with the output shaft, one side, far away from the shell, of the sealing cover is fixedly connected with a mounting lug plate, and two sides of the mounting lug plate are provided with symmetrical U-shaped positioning grooves for fixedly mounting the sealing cover and the shell;

the output shaft and the slave shaft are mutually connected through two groups of double-hole shaft sleeves, the output gear and the slave gear are both positioned between the two groups of double-hole shaft sleeves, each double-hole shaft sleeve is specifically of an 8-shaped shaft sleeve structure with two shaft holes, the outer wall of each double-hole shaft sleeve is in sliding fit with the inner side wall of the driving oil cavity, one side, away from the output gear, of each double-hole shaft sleeve is provided with a sealing groove II, four oil discharging ports are arranged on the periphery of each sealing groove II, the outer arc surface of each double-hole shaft sleeve is provided with two symmetrical oil discharging straight grooves, the oil discharging straight grooves are arranged on the bisection plane of the upper height and the lower height of the driving oil cavity, one end of each oil discharging straight groove is communicated with the sealing groove II, the other end of each oil discharging straight groove is communicated with the space between the two groups of double-hole shaft sleeves, the sealing grooves II and the oil discharging ports are internally clamped with sealing rings II and tetrafluoroethylene gaskets, and the tetrafluoroethylene gaskets cover the sealing rings II;

the orifice positions of two sides of the double-hole shaft sleeve are provided with shaft shoulders of 1-2mm, small gaps are formed among the double-hole shaft sleeve, the output gear and the slave gear respectively, so that the output shaft and the slave shaft are not blocked by friction of the end face of the double-hole shaft sleeve and can rotate smoothly, when the driving oil cavity has certain oil pressure, hydraulic oil near the output gear or the slave gear can be guided into the sealing groove II and the oil discharging straight groove through the oil discharging port, the sealing ring II can be enabled to expand by guiding the sealing groove II, tetrafluoroethylene gasket expansion thrust is exerted, it is guaranteed that two groups of double-hole shaft sleeves respectively support the inner walls of the shell and the sealing cover to be sealed tightly, the sealing performance of the cavity structure of the whole hydraulic driving gear is further improved, and the double-hole shaft sleeve is called as a floating oil sealing structure of the shaft sleeve.

Preferably, the top surface of the shell is sequentially provided with an oil inlet, an overflow valve mounting hole and a solenoid valve mounting hole from front to back, the solenoid valve is sleeved in the solenoid valve mounting hole, the bottom end of the oil inlet is communicated with the side part of the oil inlet hole groove, one end of the oil inlet hole groove is communicated with the side part of the solenoid valve mounting hole through a round hole, the rear end surface of the shell is also provided with a transition cavity, the bottom end of the solenoid valve mounting hole is communicated with one side of the transition cavity, the bottom end of the overflow valve mounting hole is communicated with the side part of the oil inlet hole groove, an overflow hole is arranged between the oil inlet hole groove and the transition cavity, the bottom end of the one-way overflow valve penetrates through the overflow valve mounting hole and extends into the overflow hole, the mouth part of the transition cavity is provided with a first plug, one end of the transition cavity, far away from the first plug, is communicated with one end of the oil outlet hole groove, a throttling column is arranged at the communication part of the transition cavity and the oil outlet groove, the top surface of the shell is sequentially provided with a test port and an oil outlet from front to back, the top end of the test port is communicated with the side part of the oil outlet hole groove, a second plug is arranged at the opening part of the test port, the top end of the oil outlet is communicated with the side part of the transition cavity, pipe joints are respectively arranged on the oil outlet and the oil inlet, the pipe joint of the oil inlet is connected with a high-pressure oil inlet pipe, and the pipe joint of the oil outlet is connected with a low-pressure oil outlet pipe;

the oil inlet, the overflow valve mounting hole, the solenoid valve mounting hole, the transition cavity, the test port and the port part of the oil outlet are all provided with threaded inner walls, the solenoid valve, the one-way overflow valve, the pipe joint, the first plug and the second plug are respectively sleeved and mounted in place through threads, and the solenoid valve, the one-way overflow valve, the pipe joint, the first plug and the second plug are all sleeved with rubber gaskets for sealing the positions of the port parts and keeping the integral sealing performance of the shell;

the outer wall of the throttling column is a threaded wall, a screw hole in threaded fit with the throttling column is formed in the communication position of the transition cavity and the oil outlet hole groove, a throttling hole is formed in the throttling column and comprises a hexagonal prism hole section connected with the transition cavity and a cylindrical hole section connected with the oil outlet hole groove, the inner diameter of the hexagonal prism hole section is larger than that of the cylindrical hole section, the opening of the hexagonal prism hole section is located in the position close to the opening of one end of the overflow hole, so that the outlet pressure value of the throttling column is close to the pressure value of one end of the overflow hole, the hexagonal prism hole section is used for placing a screwdriver to screw the throttling column tightly, the cylindrical hole section is used for limiting current to control the pressure difference of two ends of the overflow hole, overload is prevented, the normal work of the motor is guaranteed, the starting hydraulic pressure of an output shaft can be improved, the starting stability is improved, and the downtime is reduced;

the electromagnetic valve is specifically a temperature control electromagnetic valve and comprises a main valve body, the main valve body is sleeved in an electromagnetic valve mounting hole, a connecting column is fixedly connected to the outer end face of the main valve body, an electromagnetic coil is fixedly sleeved on the connecting column, one end of the connecting column is sealed through a nut, and the electromagnetic coil controls the opening or closing of the electromagnetic valve according to the oil temperature.

Preferably, the nut part of the long screw is provided with an inner hexagonal prism groove, and an anti-slip gasket is arranged between the nut part of the long screw and the rear end face of the shell.

Preferably, the bearing outside is equipped with the oil blanket piece, guarantees the leakproofness of output shaft.

The integrated motor is processed and installed as follows:

a. processing of the shell: finishing the whole body of the shell, machining a driving oil cavity, an oil inlet hole groove, an oil outlet hole groove, a sealing groove I and a pin hole on the front end surface of the shell, drilling a long screw hole, and forming circular grooves which are movably clamped with the output shaft and the slave shaft respectively on the inner plane of the driving oil cavity;

an oil inlet, an overflow valve mounting hole and a solenoid valve mounting hole are formed in the top surface of the shell, the overflow hole is milled by feeding from the overflow valve mounting hole, an oil inlet hole groove is extended to the position near the solenoid valve mounting hole, and the oil outlet hole groove and the solenoid valve mounting hole are drilled by feeding and milling a round hole from the oil inlet hole groove;

a transition cavity is formed in the rear end face of the shell, the thickness of the throttling column is reserved between the transition cavity and the oil outlet groove, and a screw hole matched with the throttling column is formed by feeding and tapping from the transition cavity;

a test port and an oil outlet are formed in the bottom surface of the shell;

b. processing of the sealing cover: finishing the whole body of the sealing cover, milling a pin hole on the inner side surface of the sealing cover, tapping a short screw hole, and mounting a bearing;

c. processing and installing the throttling column: selecting a cast iron plug with external threads, punching a hexagonal prism hole section on one end surface of the cast iron plug through die punching, milling a cylindrical hole section on the other end surface of the cast iron plug, punching the cylindrical hole section and the hexagonal prism hole section, adding a throttling column from a transition cavity, and screwing the throttling column into a corresponding screw hole by adopting a hexagonal screw head;

d. the total installation process: the output shaft, the slave shaft and the double-hole shaft sleeve are sequentially installed and placed in the driving oil cavity, the sealing cover is installed, the electromagnetic valve with the rubber gasket, the one-way overflow valve, the pipe joint, the first plug and the second plug are sequentially installed, and finally the sealing cover and the shell are fixedly installed in place through the installation lug plate and the bolt.

The use process of the integrated motor is as follows:

a. when the electromagnetic valve is opened, the path of the hydraulic oil is as follows: the output shaft does not work at the moment;

b. in the test stage, an oil inlet and a test port are opened, a pipe joint is arranged at the test port, the oil inlet is connected with the high-pressure side of a hydraulic system, the test port is connected with the low-pressure side, and the rotation condition of an output shaft and the sealing performance of a shell are detected;

c. when the electromagnetic valve is closed, the electromagnetic valve is in an open state, hydraulic oil pushes the output gear and the slave gear to rotate from the high-pressure side of the oil inlet hole groove and gradually enters the low-pressure side of the oil outlet hole groove, the pressure difference between the oil inlet hole groove and the oil outlet hole groove at the initial stage drives the output shaft to rotate, the compression yield force of a high-pressure hard spring cannot be overcome, and the rotating speed of the output shaft is kept in a normal range;

d. the electromagnetic valve is kept closed, along with the increase of flow, the electromagnetic valve is influenced by the reducing throttling of the throttling column, when the pressure difference at two ends generated by the rotation of the gear is larger than the compressive yield force of the high-pressure hard spring, the electromagnetic valve is in an overload state at the moment, when the hydraulic pressure in the oil inlet hole groove overcomes the compressive yield force of the high-pressure hard spring, the existing DBV2-420 type one-way overflow valve is adopted as the one-way overflow valve, the one-way overflow valve is an inserted valve without a valve sleeve and can be directly installed in an integrated block with a valve seat, the oil can freely flow in the a-b direction through the one-way valve (1), the oil in the b-a direction is stopped at the valve seat (2), when the system pressure reaches a set pressure, the cone valve port (3) is opened for unloading, and the set pressure refers to the pressure when the flow of the overflow valve is 5.28gpm (20 l/min); an over-high positive pressure is generated to drive the one-way overflow valve to open, so that pressure oil for pushing the output gear and the slave gear to rotate is relatively reduced, the rotating speed of the output shaft is reduced, and the purpose of overload speed limiting is achieved; when the hydraulic pressure of the oil inlet hole groove after pressure relief is smaller than the compression yield force of the high-pressure hard spring, the one-way overflow valve is closed, and the path of the hydraulic oil is changed into: the output shaft returns to a normal rotating speed running state, so that the functions of overload speed reduction and normal rotating speed recovery after pressure relief are realized;

e. keeping the electromagnetic valve closed, closing the oil inlet and the oil outlet, entering a forced closing state at the moment, enabling the output shaft to still rotate inertially, continuously and directly guiding the oil in the oil inlet hole groove into the oil outlet hole groove, causing a vacuum air column phenomenon of the oil inlet hole groove if the oil is not processed, gradually increasing the pressure of the oil outlet hole groove, gradually reducing the speed of the output shaft through the blocking effect of the throttling column, and under the influence of the reducing throttling of the throttling column, wherein the hydraulic pressure in the transition cavity is greater than the pressure in the oil inlet hole groove, the back pressure difference pushes the front end of the one-way overflow valve to open the one-way overflow valve, the oil in the transition cavity returns to the oil inlet hole groove under the driving of the back pressure difference to complete oil supplement, and a feedback route is formed until the pressure in the whole shell tends to be balanced, the output shaft does not run any more, thereby reducing the downtime of the output shaft and eliminating the vacuum air column phenomenon which may occur.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a diplopore axle sleeve and seal structure optimize the sealed of output shaft, realize the axle sleeve seal structure of a unsteady oil seal, thereby lead oil production comparatively coherent oil film in seam crossing simultaneously, further improve the leakproofness to avoid oil leakage and power loss.

2. Under this seal structure's support, the utility model discloses an easy processing and easy to assemble's casing adopts simple grafting mounting means to constitute the integrated motor of a novel structure in with control flap component, gear pump part and output shaft structrual installation casing as the carrier, and it not only undertakes the function of motor in the common meaning, turns into pivot pivoted mechanical energy with the kinetic energy of high-pressure fluid, can also undertake system execution element's control function.

Drawings

Fig. 1 is a specific structural diagram of a double-hole shaft sleeve in a shaft sleeve floating oil sealing structure of an integrated motor according to the present invention;

FIG. 2 is a perspective view of the integrated motor of the present invention matching with the floating oil seal structure of the shaft sleeve;

FIG. 3 is an assembly structure diagram of the integrated motor matched with the floating oil seal structure of the shaft sleeve of the present invention;

fig. 4 is a structural diagram of the installation of the electromagnetic valve in the integrated motor according to the present invention;

fig. 5 is a cross-sectional view of a throttle column in the integrated motor of the present invention;

fig. 6 is a machined hole structure of a housing in the integrated motor of the present invention;

fig. 7 is a schematic view of a machining hole installation in the integrated motor of the present invention;

fig. 8 is a first hydraulic schematic diagram (normally closed state of the solenoid valve) of the operation of the integrated motor according to the present invention;

fig. 9 is a second hydraulic schematic diagram (normally open state of the solenoid valve) of the operation of the integrated motor according to the present invention;

in the figure: the device comprises a shell 1, a driving oil cavity 101, an oil inlet hole groove 102, an oil outlet hole groove 103, a sealing groove I104, a pin hole 105, a long screw hole 106, an oil inlet 107, an overflow valve mounting hole 108, an electromagnetic valve mounting hole 109, a transition cavity 110, an overflow hole 111, a test port 112, an oil outlet 113, a sealing cover 2, an electromagnetic valve 3, a one-way overflow valve 4, an output gear 5, a slave gear 6, a sealing ring I7, a positioning pin 8, a long screw 9, a short screw hole 10, an output shaft 11, a slave shaft 12, a bearing hole 13, a bearing 14, a mounting lug plate 15, a double-hole shaft sleeve 16, a sealing groove II17, an oil discharge port 18, an oil discharge straight groove 19, a sealing ring II20, a tetrafluoroethylene gasket 21, a first plug 22, a throttling column 23 and a second plug 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a shaft sleeve floating oil sealing structure of an integrated motor comprises an output gear 5 and a slave gear 6 which are meshed with each other, the integrated motor comprises a shell 1, a sealing cover 2 arranged at the front end of the shell 1, an electromagnetic valve 3 and a one-way overflow valve 4 which are inserted on the shell 1, it is characterized in that the front end face of the shell 1 is provided with a driving oil cavity 101 which is hermetically sleeved with the output gear 5 and the slave gear 6, the driving oil cavity 101 is a horizontally-arranged 8-shaped spindle cavity structure, an oil inlet hole groove 102 is communicated with the upper part of the central part of the driving oil cavity 101, an oil outlet hole groove 103 is communicated with the lower part of the central part of the driving oil cavity 101, the oil inlet hole groove 102 and the oil outlet hole groove 103 are symmetrically distributed along the driving oil cavity 101, the oil inlet hole groove 102, the oil outlet hole groove 103 and the driving oil cavity 101 form a cavity structure with a four-petal-shaped section; a sealing groove I104 is formed in the position, located outside the four-petal-shaped cavity structure, of the front end face of the shell 1, a sealing ring I7 is clamped in the sealing groove I104, pin holes 105 and long screw rod holes 106 are formed in the position, located outside the sealing groove I104, of the front end face of the shell 1, the two groups of pin holes 105 are centrosymmetric, corresponding pin holes 105 are also formed in one side, close to the shell 1, of the sealing cover 2, positioning pins 8 are clamped in the two groups of corresponding pin holes 105, the four groups of long screw rod holes 106 are distributed in a rectangular shape, the long screw rod holes 106 penetrate through the front end face and the rear end face of the shell 1, long screws 9 are matched in the long screw rod holes 106, short screw holes 10 in threaded fit with one ends of the long screws 9 are formed in one side, close to the shell 1, and the other ends of the long screws 9 extend to the rear end face of the shell 1 and are fixedly provided with screw cap parts; the output gear 5 and the slave gear 6 are meshed with each other, the outer contours of the output gear 5 and the slave gear 6 are respectively sealed with the inner side wall of the driving oil cavity 101 through an oil film of hydraulic oil, the output gear 5 is fixedly sleeved in the middle of the output shaft 11, the slave gear 6 is fixedly sleeved in the middle of the slave shaft 12, the driving oil cavity 101 is provided with circular grooves movably clamped with the output shaft 11 and the slave shaft 12 respectively, one side, close to the shell 1, of the sealing cover 2 is provided with a circular groove movably clamped with the slave shaft 12, the middle of the sealing cover 2 is provided with a bearing hole 13, the bearing hole 13 is in interference clamping connection with the outer ring wall of the bearing 14, the inner ring wall of the bearing 14 is in transition fit clamping connection with the output shaft 11, one side, far away from the shell 1, of the sealing cover 2 is fixedly connected with an installation lug plate 15, and two sides of the installation lug plate 15 are provided with symmetrical U-shaped positioning grooves for fixedly installing the sealing cover 2 and the shell 1; the output shaft 11 and the slave shaft 12 are connected with each other through two groups of double-hole shaft sleeves 16, the output gear 5 and the slave gear 6 are both positioned between the two groups of double-hole shaft sleeves 16, the double-hole shaft sleeves 16 are particularly of 8-shaped shaft sleeve structures with two shaft holes, the outer wall of each double-hole shaft sleeve 16 is in sliding fit with the inner side wall of the drive oil cavity 101, one side, away from the output gear 5, of each double-hole shaft sleeve 16 is provided with a seal groove II17, four oil discharge ports 18 are formed in the periphery of each seal groove II17, the outer arc surface of each double-hole shaft sleeve 16 is provided with two symmetrical oil discharge straight grooves 19, each oil discharge straight groove 19 is arranged on a plane of the upper height and the lower height of the drive oil cavity 101, one end of each oil discharge straight groove 19 is communicated with the seal groove II17, the other end of each oil discharge straight groove 19 is communicated with a space between the two groups of double-hole shaft sleeves 16, seal rings II20 and tetrafluoroethylene gaskets 21 are clamped in the seal grooves II17 and the oil discharge ports 18, and the tetrafluoroethylene gaskets 21 are covered outside the seal rings 20; the orifices on two sides of the double-hole shaft sleeve 16 are provided with shaft shoulders of 1-2mm, so that small gaps are respectively reserved between the double-hole shaft sleeve 16 and the output gear 5 and the slave gear 6, the output shaft 11 and the slave shaft 12 are not blocked by friction of the end surface of the double-hole shaft sleeve 16 and can smoothly rotate, when the driving oil cavity 101 has certain oil pressure, hydraulic oil near the output gear 5 or the slave gear 6 can be guided into the seal groove II17 and the oil discharge straight groove 19 through the oil discharge port 18, the seal groove II17 can be guided into to enable the seal ring II20 to expand, expansion thrust of the tetrafluoroethylene gasket 21 is applied, the two groups of double-hole shaft sleeves 16 are guaranteed to respectively carry out abutting sealing on the inner walls of the shell 1 and the seal cover 2, the sealing performance of the cavity structure of the whole hydraulic driving gear is further improved, and the double-hole shaft sleeve is called as a floating oil sealing structure of the shaft sleeve.

Referring to fig. 2-7, an oil inlet 107, an overflow valve mounting hole 108 and a solenoid valve mounting hole 109 are sequentially formed in the top surface of the housing 1 from front to back, the solenoid valve 3 is sleeved in the solenoid valve mounting hole 109, the bottom end of the oil inlet 107 is communicated with the side portion of the oil inlet hole groove 102, one end of the oil inlet hole groove 102 is communicated with the side portion of the solenoid valve mounting hole 109 through a circular hole, a transition cavity 110 is further formed in the rear end surface of the housing 1, the bottom end of the solenoid valve mounting hole 109 is communicated with one side of the transition cavity 110, the bottom end of the overflow valve mounting hole 108 is communicated with the side portion of the oil inlet hole groove 102, an overflow hole 111 is formed between the oil inlet hole groove 102 and the transition cavity 110, the bottom end of the one-way overflow valve 4 passes through the overflow valve mounting hole 108 and extends into the overflow hole 111, a first plug 22 is arranged at the mouth of the transition cavity 110, one end of the transition cavity 110, far away from the first plug 22 is communicated with one end of the oil outlet hole groove 103, a throttling column 23 is arranged at the communication position of the transition cavity 110 and the oil hole groove 103, a test port 112 and an oil outlet 113 are sequentially formed in the top surface of the shell 1 from front to back, the top end of the test port 112 is communicated with the side portion of the oil outlet hole groove 103, a second plug 24 is arranged at the mouth portion of the test port 112, the top end of the oil outlet 113 is communicated with the side portion of the transition cavity 110, pipe joints are respectively arranged on the oil outlet 113 and the oil inlet 107, the pipe joint of the oil inlet 107 is connected with a high-pressure oil inlet pipe, and the pipe joint of the oil outlet 113 is connected with a low-pressure oil outlet pipe; the mouth parts of the oil inlet 107, the overflow valve mounting hole 108, the electromagnetic valve mounting hole 109, the transition cavity 110, the test port 112 and the oil outlet 113 are all provided with threaded inner walls, the electromagnetic valve 3, the one-way overflow valve 4, the pipe joint, the first plug 22 and the second plug 24 are respectively sleeved and mounted in place through threads, and the electromagnetic valve 3, the one-way overflow valve 4, the pipe joint, the first plug 22 and the second plug 24 are all sleeved and connected with rubber gaskets for sealing the positions of the mouth parts and keeping the overall sealing performance of the shell 1; the outer wall of the throttling column 23 is a threaded wall, a screw hole in threaded fit with the throttling column 23 is formed in the communication position of the transition cavity 110 and the oil outlet groove 103, a throttling hole is formed in the throttling column 23 and comprises a hexagonal prism hole section connected with the transition cavity 110 and a cylindrical hole section connected with the oil outlet groove 103, the inner diameter of the hexagonal prism hole section is larger than that of the cylindrical hole section, the opening part of the hexagonal prism hole section is located near the opening part of one end of the overflow hole 111, so that the pressure value of the outlet of the throttling column 23 is close to that of one end of the overflow hole 111, the hexagonal prism hole section is used for placing a screwdriver to screw the throttling column 23 tightly, the cylindrical hole section is used for limiting current to control the pressure difference of the two ends of the overflow hole 111, overload is prevented, the normal work of the motor is guaranteed, the starting liquid pressure of the output shaft 11 can be improved, the opening stability is improved, and the downtime is reduced; the electromagnetic valve 3 is specifically a temperature control electromagnetic valve, the electromagnetic valve 3 includes a main valve body, the main valve body is sleeved in the electromagnetic valve mounting hole 109, the outer end face of the main valve body is fixedly connected with a connecting column, the connecting column is fixedly sleeved with an electromagnetic coil, one end of the connecting column is sealed through a nut, and the electromagnetic coil controls the opening or closing of the electromagnetic valve 3 according to the oil temperature.

Referring to fig. 3, the cap portion of the long screw 9 is provided with a hexagonal socket, and an anti-slip washer is provided between the cap portion of the long screw 9 and the rear end surface of the housing 1.

Referring to fig. 3, an oil seal gasket is provided outside the bearing 14 to ensure the sealing property of the output shaft 11.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (4)

1. A shaft sleeve floating oil sealing structure of an integrated motor comprises an output gear (5) and a slave gear (6) which are meshed with each other, the integrated motor comprises a shell (1), a sealing cover (2) arranged at the front end of the shell (1), and an electromagnetic valve (3) and a one-way overflow valve (4) which are inserted on the shell (1), and is characterized in that a driving oil cavity (101) hermetically sleeved with the output gear (5) and the slave gear (6) is arranged on the front end face of the shell (1), the driving oil cavity (101) is specifically of a horizontally-arranged 8-shaped spindle cavity structure, an oil inlet hole groove (102) is communicated above the central part of the driving oil cavity (101), an oil outlet hole groove (103) is communicated below the central part of the driving oil cavity (101), and the oil inlet hole groove (102) and the oil outlet hole groove (103) are symmetrically distributed along the driving oil cavity (101), the oil inlet hole groove (102), the oil outlet hole groove (103) and the driving oil cavity (101) form a cavity structure with a four-petal-shaped section;

the sealing structure is characterized in that a sealing groove I (104) is formed in the position, outside the four-petal-shaped cavity structure, of the front end face of the shell (1), a sealing ring I (7) is connected in a clamping mode in the sealing groove I (104), pin holes (105) and long screw holes (106) are formed in the position, outside the sealing groove I (104), of the front end face of the shell (1), two groups of pin holes (105) are in central symmetry, one side, close to the shell (1), of the sealing cover (2) is also provided with corresponding pin holes (105), two groups of corresponding pin holes (105) are connected with positioning pins (8) in a clamping mode, four groups of long screw holes (106) are distributed in a rectangular mode, the long screw holes (106) penetrate through the front end face and the rear end face of the shell (1), long screws (9) are matched in the long screw holes (106), short screw holes (10) matched with threads at one end of the long screws (9) are formed in one side, close to the shell (1), of the sealing cover (2), the other end of the long screw (9) extends to the rear end face of the shell (1) and is fixedly provided with a screw cap part;

the output gear (5) and the slave gear (6) are mutually meshed, the outer contour of the output gear (5) and the slave gear (6) is respectively sealed with an oil film of hydraulic oil between the inner side wall of the driving oil cavity (101), the output gear (5) is fixedly sleeved at the middle part of the output shaft (11), the slave gear (6) is fixedly sleeved at the middle part of the slave shaft (12), the driving oil cavity (101) is provided with circular grooves movably clamped with the output shaft (11) and the slave shaft (12) respectively, the sealing cover (2) is close to one side of the shell (1) and is provided with a circular groove movably clamped with the slave shaft (12), the middle part of the sealing cover (2) is provided with a bearing hole (13), the bearing hole (13) is internally provided with an outer ring wall of the bearing (14) in an interference clamping manner, and the inner ring wall of the bearing (14) is in transition clamping fit with the output shaft (11), an installation ear plate (15) is fixedly connected to one side, away from the shell (1), of the sealing cover (2), and symmetrical U-shaped positioning grooves are formed in two sides of the installation ear plate (15) and used for fixedly installing the sealing cover (2) and the shell (1);

the output shaft (11) and the slave shaft (12) are connected with each other through two groups of double-hole shaft sleeves (16), the output gear (5) and the slave gear (6) are both positioned between the two groups of double-hole shaft sleeves (16), the double-hole shaft sleeves (16) are specifically of 8-shaped shaft sleeve structures with two shaft holes, the outer wall of each double-hole shaft sleeve (16) is in sliding fit with the inner side wall of the driving oil cavity (101), one side of each double-hole shaft sleeve (16), far away from the output gear (5), is provided with a sealing groove II (17), four oil discharging ports (18) are arranged around the sealing groove II (17), two symmetrical oil discharging straight grooves (19) are arranged on the outer arc surface of each double-hole shaft sleeve (16), the oil discharging straight grooves (19) are arranged on the plane of the upper height and the lower height of the driving oil cavity (101), one end of each oil discharging straight groove (19) is communicated with the sealing groove II (17), the other end of the oil discharge straight groove (19) is communicated with a space between two groups of double-hole shaft sleeves (16), a sealing ring II (20) and a tetrafluoroethylene gasket (21) are clamped in the sealing groove II (17) and the oil discharge port (18), and the tetrafluoroethylene gasket (21) covers the sealing ring II (20);

shaft shoulders with the diameter of 1-2mm are arranged at the orifices at the two sides of the double-hole shaft sleeve (16), so that small gaps are respectively reserved among the double-hole shaft sleeve (16), the output gear (5) and the slave gear (6), thereby leading the output shaft (11) and the slave shaft (12) not to be blocked by the friction of the end surface of the double-hole shaft sleeve (16) and to rotate smoothly, when the driving oil cavity (101) has certain oil pressure, the hydraulic oil near the output gear (5) or the slave gear (6) can be guided into the seal groove II (17) and the oil discharge straight groove (19) through the oil discharge port (18), the introduction of the seal groove II (17) can promote the expansion of the seal ring II (20), thereby to exerting tetrafluoroethylene gasket (21) inflation thrust, guarantee that two sets of diplopore axle sleeves (16) support tightly sealed to the inner wall of casing (1) and sealed lid (2) respectively, further improve the leakproofness of whole hydraulic drive gear cavity structure.

2. The shaft sleeve floating oil sealing structure of the integrated motor according to claim 1, wherein an oil inlet (107), an overflow valve mounting hole (108) and a solenoid valve mounting hole (109) are sequentially formed in the top surface of the housing (1) from front to back, the solenoid valve (3) is sleeved in the solenoid valve mounting hole (109), the bottom end of the oil inlet (107) is communicated with the side portion of the oil inlet hole groove (102), one end of the oil inlet hole groove (102) is communicated with the side portion of the solenoid valve mounting hole (109) through a circular hole, a transition cavity (110) is further formed in the rear end surface of the housing (1), the bottom end of the solenoid valve mounting hole (109) is communicated with one side of the transition cavity (110), the bottom end of the overflow valve mounting hole (108) is communicated with the side portion of the oil inlet hole groove (102), and an overflow hole (111) is formed between the oil inlet hole groove (102) and the transition cavity (110), the bottom end of the one-way overflow valve (4) penetrates through an overflow valve mounting hole (108) and extends into an overflow hole (111), a first plug (22) is arranged at the opening part of the transition cavity (110), one end, far away from the first plug (22), of the transition cavity (110) is communicated with one end of an oil outlet hole groove (103), a throttling column (23) is arranged at the communication part of the transition cavity (110) and the oil outlet hole groove (103), a test port (112) and an oil outlet (113) are sequentially formed in the top surface of the shell (1) from front to back, the top end of the test port (112) is communicated with the side part of the oil outlet hole groove (103), a second plug (24) is arranged at the opening part of the test port (112), the top end of the oil outlet (113) is communicated with the side part of the transition cavity (110), pipe joints are respectively arranged on the oil outlet (113) and the oil inlet (107), and the pipe joint of the oil inlet (107) is connected with a high-pressure oil inlet pipe, the pipe joint of the oil outlet (113) is connected with a low-pressure oil outlet pipe;

the oil inlet (107), the overflow valve mounting hole (108), the electromagnetic valve mounting hole (109), the transition cavity (110), the test port (112) and the oil outlet (113) are provided with threaded inner walls at the ports, the electromagnetic valve (3), the one-way overflow valve (4), the pipe joint, the first plug (22) and the second plug (24) are respectively installed in place through threaded sleeves, and the electromagnetic valve (3), the one-way overflow valve (4), the pipe joint, the first plug (22) and the second plug (24) are respectively sleeved with rubber gaskets for sealing the ports and keeping the overall sealing performance of the shell (1);

the outer wall of the throttling column (23) is a threaded wall, a screw hole in threaded fit with the throttling column (23) is formed in the communication position of the transition cavity (110) and the oil outlet groove (103), a throttling hole is formed in the throttling column (23), the throttling hole comprises a hexagonal prism hole section connected with the transition cavity (110) and a cylindrical hole section connected with the oil outlet groove (103), the inner diameter of the hexagonal prism hole section is larger than that of the cylindrical hole section, the opening part of the hexagonal prism hole section is located near the position of one end opening part of the overflow hole (111), so that the outlet pressure value of the throttling column (23) is close to the pressure value of one end of the overflow hole (111), the hexagonal prism hole section is used for placing a screwdriver to screw the throttling column (23) for installation, the cylindrical hole section is used for limiting the flow to control the pressure difference of the two ends of the overflow hole (111), overload is prevented, the normal work of the motor is guaranteed, and the starting hydraulic pressure of the output shaft (11) can be improved, improve the start-up stability and reduce down time;

solenoid valve (3) are specifically temperature control solenoid valve, solenoid valve (3) include the main valve body, and the main valve body cup joints in solenoid valve mounting hole (109), main valve body outer terminal surface rigid coupling has the spliced pole, the fixed cover of spliced pole has solenoid, the nut end is passed through to spliced pole one end, solenoid is according to opening or closing of oil temperature control solenoid valve (3).

3. The floating oil sealing structure of the shaft sleeve of the integrated motor according to claim 1, characterized in that the nut portion of the long screw (9) is provided with an inner hexagonal prism groove, and an anti-slip gasket is arranged between the nut portion of the long screw (9) and the rear end face of the shell (1).

4. The floating oil seal structure of the shaft sleeve of the integrated motor in claim 1, characterized in that an oil seal gasket is arranged outside the bearing (14) to ensure the sealing performance of the output shaft (11).

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