Integrated gearbox housing and processing technology

Abstract

The present invention relates to the technical field of automobile gearboxes, and in particular to an integrated gearbox housing and processing technology, comprising a gearbox housing, on which an inlet hole and an outlet hole are provided; a valve body, which is integrally formed on the gearbox housing, and in which a safety chamber, a main oil pressure regulating chamber and a solenoid valve chamber, which are connected in sequence, are provided in the valve body, the safety chamber is connected to the inlet hole, the solenoid valve chamber is connected to the outlet hole, and an energy storage chamber is also provided in the valve body, which is connected to the outlet hole, a safety valve core is provided in the safety chamber, a main oil pressure regulating valve core is provided in the main oil pressure regulating chamber, an accumulator is provided in the energy storage chamber, and a solenoid valve core is provided in the solenoid valve chamber. The integrated gearbox housing of the present invention integrates the safety valve core, the main oil pressure regulating valve core, the accumulator and the solenoid valve core in the valve body, and then integrates the solenoid valve group in the gearbox housing, thereby reducing the overall volume of the gearbox housing and the solenoid valve group, and reducing the cost and weight, thus contributing to the lightweight of the vehicle and facilitating the miniaturization of the gearbox.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile gearboxes, and in particular to an integrated gearbox housing and a processing technology thereof. Background Art

[0002] In order to output oil with stable oil pressure to the actuator and achieve precise control of the actuator, a solenoid valve group is provided in the automobile transmission.

[0003] The existing regulating valve group is fixedly installed in the gearbox by means of bolts, etc., but this method is costly and has a greater overall weight, which is not conducive to lightweighting of the vehicle. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the technical problems in the prior art, the present invention provides an integrated gearbox housing and a processing technology.

[0005] The technical solution adopted by the present invention to solve its technical problems is: an integrated gearbox housing, including a gearbox housing, which is provided with an inlet hole and an outlet hole; a valve body, which is integrally formed on the gearbox housing, and the valve body is provided with a safety chamber, a main oil pressure regulating chamber and a solenoid valve chamber which are connected in sequence, the safety chamber is connected with the inlet hole, the solenoid valve chamber is connected with the outlet hole, and the valve body is also provided with an energy storage chamber, which is connected with the outlet hole, a safety valve core is provided in the safety chamber, a main oil pressure regulating valve core is provided in the main oil pressure regulating chamber, an accumulator is provided in the energy storage chamber, and a solenoid valve core is provided in the solenoid valve chamber.

[0006] The integrated transmission case of the present invention realizes safe pressure relief through the cooperation of the safety valve core and the safety chamber, provides a stable pressure source for the solenoid valve chamber through the cooperation of the main oil pressure regulating chamber and the main oil pressure regulating valve core, accurately adjusts the pressure and provides stable oil output through the cooperation of the solenoid valve core and the solenoid valve chamber, and through the cooperation of the accumulator and the energy storage chamber, when the oil pressure is greater than the demand, the oil flows into the accumulator, and when the oil pressure is less than the demand, the oil in the accumulator flows back to the outlet hole to compensate for the insufficient demand; by integrating the safety valve core, the main oil pressure regulating valve core, the accumulator and the solenoid valve core in the valve body, and then integrating the solenoid valve group into the transmission case, the overall volume of the transmission case and the solenoid valve group is reduced, and the cost and weight are reduced, which contributes to the lightweight of the vehicle and is conducive to the miniaturization of the transmission.

[0007] Furthermore, a filter housing is integrally formed on one side of the transmission housing away from the valve body, a filter chamber is provided in the filter housing, a filter core is provided in the filter chamber, one end of the filter chamber is connected to the inlet hole, and the other end of the filter chamber is connected to the safety chamber.

[0008] Through the above technical solution, the oil is filtered through the cooperation of the filter element and the process chamber. At the same time, the filter housing is arranged on the side of the gearbox housing away from the valve body, which further realizes the simplified utilization of space and is conducive to the overall miniaturization of the gearbox.

[0009] Furthermore, a first annular groove is provided on the main oil pressure regulating valve core, a safety connection chamber for communicating with a safety chamber is connected to the main oil pressure regulating chamber, an electromagnetic connection chamber for communicating with an energy storage chamber is connected to the main oil pressure regulating chamber, and the oil in the safety connection chamber passes through the first annular groove and flows into the electromagnetic connection chamber; the main oil pressure regulating chamber is coaxially connected with a pressure regulating chamber, a regulating head is provided on the main oil pressure regulating valve core, the regulating head is inserted into the pressure regulating chamber, a balancing chamber is connected to the electromagnetic connection chamber, and the other end of the balancing chamber is connected to the pressure regulating chamber so that the pressure in the electromagnetic connection chamber can act on the pressure regulating chamber, and the cross-sectional size of the pressure regulating chamber is smaller than the cross-sectional size of the main oil pressure regulating chamber; a first regulating spring and a first plug are provided in the main oil pressure regulating chamber, and the first plug is Connected to one end of the main oil pressure regulating chamber with an opening, the first regulating spring is arranged between the first plug and the main oil pressure regulating valve core to apply pressure to the main oil pressure regulating valve core so that the main oil pressure regulating valve core moves toward the regulating chamber; when the pressure in the electromagnetic connection chamber is too large, the oil pressure in the electromagnetic connection chamber acts on the regulating head, so that the main oil pressure regulating valve core overcomes the pressure of the first regulating spring and moves toward the first regulating spring, thereby reducing the flow rate of the first ring groove input to the electromagnetic connection chamber; when the pressure in the electromagnetic connection chamber is too small, the pressure applied to the main oil pressure regulating valve core by the first regulating spring is greater than the pressure of the oil in the electromagnetic connection chamber acting on the main oil pressure regulating valve core, so that the main oil pressure regulating valve core moves toward the regulating chamber, thereby increasing the flow rate of the first ring groove entering the electromagnetic connection chamber.

[0010] Through the above technical scheme, when the pressure in the electromagnetic connection chamber is too large, the oil pressure in the electromagnetic connection chamber acts on the regulating head, so that the main oil pressure regulating valve core overcomes the pressure of the first regulating spring and moves toward the first regulating spring, thereby reducing the flow rate of the first annular groove input to the electromagnetic connection chamber, and also reducing the pressure in the electromagnetic connection chamber; when the pressure in the electromagnetic connection chamber is too small, the pressure applied to the main oil pressure regulating valve core by the first regulating spring is greater than the pressure of the oil in the electromagnetic connection chamber acting on the main oil pressure regulating valve core, so that the main oil pressure regulating valve core moves toward the regulating chamber, thereby increasing the flow rate of the first annular groove entering the electromagnetic connection chamber, and the pressure in the electromagnetic connection chamber is increased, thereby making the relative pressure in the electromagnetic connection chamber relatively stable, thereby providing a stable pressure source for the solenoid valve chamber.

[0011] Furthermore, the energy accumulator includes an energy storage shell, a second adjusting spring and a second plug-in sheet, the energy storage shell slides in the energy storage chamber, the second plug-in sheet is connected to one end of the opening of the energy storage chamber, the second adjusting spring is arranged between the energy storage shell and the second plug-in sheet, and the end of the energy storage chamber away from the second plug-in sheet is connected to the outlet hole; when the pressure of the oil in the outlet hole acting on the energy storage shell is greater than the pressure applied to the energy storage shell by the second adjusting spring, the energy storage shell moves toward the second plug-in sheet to accumulate oil between the energy storage shell and the side wall of the energy storage chamber; when the pressure of the oil in the outlet hole acting on the energy storage shell is less than the pressure applied to the energy storage shell by the second adjusting spring, the energy storage shell moves in a direction away from the second plug-in sheet, so that the oil accumulated between the energy storage shell and the side wall of the energy storage chamber is transported to the electromagnetic connection chamber.

[0012] Through the above technical solution, when the pressure of the oil in the outlet hole acting on the energy storage shell is greater than the pressure applied to the energy storage shell by the second adjusting spring, that is, when the oil pressure in the outlet hole is greater than the demand, the energy storage shell moves toward the second plug-in piece to accumulate oil between the energy storage shell and the side wall of the energy storage chamber, and at the same time reduce the oil pressure in the outlet hole; when the pressure of the oil in the outlet hole acting on the energy storage shell is less than the pressure applied to the energy storage shell by the second adjusting spring, that is, when the oil pressure in the outlet hole is less than the demand, the energy storage shell moves in the direction away from the second plug-in piece, so that the oil accumulated between the energy storage shell and the side wall of the energy storage chamber is transported to the electromagnetic connection chamber, and at the same time increase the oil pressure in the outlet hole to achieve demand compensation.

[0013] Furthermore, a first connecting chamber is provided in the valve body, the first connecting chamber and the safety connecting chamber are perpendicular to each other, the first connecting chamber and the safety connecting chamber are both arranged parallel to the gearbox housing, the safety chamber is arranged perpendicular to the gearbox housing, and the safety chamber comprises a large-diameter chamber and a small-diameter chamber that are connected to each other; one end of the first connecting chamber is connected to the inlet hole, and the other end is connected to the small-diameter chamber, and the small-diameter chamber is connected to the safety connecting chamber; the safety valve core comprises a first plug, a sealing ball and a third adjusting spring, the sealing ball is located in the large-diameter chamber and is used to seal the small-diameter chamber, the first plug is threadedly connected to the large-diameter chamber, the third adjusting spring is located between the first plug and the sealing ball, and the first plug is provided with a pressure relief hole along its own axial direction.

[0014] Through the above technical solution, when the oil pressure in the small diameter cavity is too high, the oil in the small diameter cavity overcomes the elastic force of the third adjusting spring, pushes open the blocking ball and flows into the large diameter cavity, and finally flows out from the pressure relief hole to achieve pressure relief.

[0015] Furthermore, the solenoid valve cavity is connected to a measuring cavity, a first pressure sensor is arranged in the measuring cavity, and the first pressure sensor is electrically connected to the solenoid valve core.

[0016] Through the above technical solution, the first pressure sensor is convenient for monitoring the pressure in the solenoid valve cavity, further improving the precise control of the oil pressure by the solenoid valve core.

[0017] Furthermore, the solenoid valve cavity has a plurality of cylindrical holes with different diameters, adjacent cylindrical holes are connected via conical holes, and the measuring cavity is in communication with the side walls of the cylindrical holes.

[0018] Through the above technical solution, the measuring cavity is not connected to the side wall of the tapered hole, which can reduce the possibility of damage to the sealing ring on the electromagnetic valve core caused by the sharp edges formed at the junction of the measuring cavity and the tapered hole when the electromagnetic valve core is working.

[0019] A processing technology, based on the above-mentioned integrated gearbox housing, comprises the following steps:

[0020] S1, forming the gearbox housing and the valve body by die-casting;

[0021] S2, processing the side of the gearbox housing having the filter housing, the inlet hole and the outlet hole;

[0022] S3. Using the side of the transmission housing having the filter housing, the inlet hole and the outlet hole as a reference, a filter chamber, a first connecting chamber, a safety chamber, a safety connecting chamber, an energy storage connecting chamber, a main oil pressure regulating chamber, an energy storage chamber, a solenoid valve chamber, a balancing chamber, a pressure regulating chamber and a measuring chamber are machined;

[0023] S4. Install the safety valve core in the safety cavity, install the main oil pressure regulating valve core in the main oil pressure regulating cavity, install the accumulator in the accumulator cavity, install the solenoid valve core in the solenoid valve cavity, and install the first pressure sensor in the measuring cavity.

[0024] Through the above technical solution, the cost of the gearbox housing can be greatly reduced and the production efficiency can be improved through die-casting. Then, the gearbox housing has a filter housing side, an inlet hole and an outlet hole as a reference. The three cooperate with each other to improve the processing accuracy of other subsequent holes and grooves.

[0025] Furthermore, in step S3, a forming tool is used to process the main oil pressure regulating cavity.

[0026] Through the above technical solution, since the main oil pressure regulating chamber is long and has high precision requirements, a forming tool is used for processing. By limiting the precision of the forming tool, the processing accuracy of the main oil pressure regulating chamber is guaranteed.

[0027] Further, in step S3, the balancing chamber includes a first large balancing hole and a first small balancing hole that are coaxially connected, and a second large balancing hole and a second small balancing hole that are coaxially connected, the first large balancing hole is connected to the pressure regulating chamber connecting tube, the first small balancing hole is connected to the second large balancing hole, and the second small balancing hole is connected to the electromagnetic connection chamber; when processing the first large balancing hole, the first small balancing hole, the second large balancing hole and the second small balancing hole, the first large balancing hole and the second large balancing hole are first processed respectively by a large drill bit, and then the first small balancing hole and the second small balancing hole are processed respectively by a small drill bit.

[0028] Through the above technical solution, the first large balancing hole and the second large balancing hole are first processed by a large drill bit, and then the first small balancing hole and the second small balancing hole are processed by a small drill bit. This can reduce the processing length of the first small balancing hole and the second small balancing hole, reduce the processing difficulty, reduce the possibility of damage to the drill bit, and thus reduce production costs.

[0029] The beneficial effects of the present invention are:

[0030] 1. Safe pressure relief is achieved through the cooperation of the safety valve core and the safety chamber. The cooperation of the main oil pressure regulating chamber and the main oil pressure regulating valve core provides a stable pressure source for the solenoid valve chamber. The cooperation of the solenoid valve core and the solenoid valve chamber can accurately adjust the pressure and provide stable oil output. Through the cooperation of the accumulator and the energy storage chamber, when the oil pressure is greater than the demand, the oil flows into the accumulator. When the oil pressure is less than the demand, the oil in the accumulator flows back to the outlet hole to compensate for the insufficient demand; by integrating the safety valve core, the main oil pressure regulating valve core, the accumulator and the solenoid valve core into the valve body, and then integrating the solenoid valve group into the gearbox housing, the overall volume of the gearbox housing and the solenoid valve group is reduced, and the cost and weight are reduced, which contributes to the lightweight of the vehicle and is conducive to the miniaturization of the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Figure 1 It is a schematic structural diagram of the integrated gearbox housing in the present invention.

[0033] Figure 2 It is a schematic diagram of the hydraulic principle in the valve body of the present invention.

[0034] Figure 3 It is a schematic diagram of the safety chamber, the safety valve core and the filter core in the present invention.

[0035] Figure 4 It is a schematic diagram of the solenoid valve chamber and the main oil pressure regulating chamber in the present invention.

[0036] Figure 5 yes Figure 1 A partial enlarged view of part A in the middle.

[0037] Figure 6 Schematic diagram of the accumulator in the present invention.

[0038] Figure 7 It is a schematic diagram of the plug-in tooling in the present invention.

[0039] Figure 8 It is a schematic diagram of the pressing block and the limiting block in the present invention.

[0040] In the figure: 1. gearbox housing; 11. inlet hole; 12. outlet hole; 13. filter housing; 131. filter chamber; 132. filter element; 2. valve body; 21. safety chamber; 211. large diameter chamber; 212. small diameter chamber; 22. main oil pressure regulating chamber; 221. pressure regulating chamber; 222. balance chamber; 2221. first large balance hole; 2222. first small balance hole; 2223. second large balance hole; 2224. second small balance hole; 223. first slot; 23. solenoid valve chamber; 231. cylindrical hole; 232. conical hole; 233. measuring chamber; 234. first pressure sensor; 2341. second pressure sensor; 235. electromagnetic connection chamber; 24. energy storage chamber; 25. first connection chamber; 251. safety connection chamber; 26. main oil pressure regulating valve core; 261. regulating head; 262. First regulating spring; 263, first insert; 264, first ring groove; 27, safety valve core; 271, first plug; 2711, pressure relief hole; 272, blocking ball; 273, third regulating spring; 28, solenoid valve core; 282, card plate; 29, accumulator; 291, accumulator shell; 292, second regulating spring; 293, second insert; 3, frame; 31, first hydraulic cylinder; 32, second Hydraulic cylinder; 33, adsorption pressing piece; 331, adsorption hole; 332, negative pressure tube; 333, pressure plate; 334, linkage block; 335, shift block; 336, second inclined surface; 34, plug block; 35, installation box; 351, pressing block; 352, linkage groove; 353, first groove wall; 354, second groove wall; 355, limit block; 356, clamping block; 357, return spring; 358, first inclined surface. DETAILED DESCRIPTION

[0041] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The invention discloses an integrated gearbox housing and a processing technology.

[0044] Reference Figure 1 and Figure 2 An integrated gearbox housing includes a gearbox housing 1, which is provided with an inlet hole 11 and an outlet hole 12. The inlet hole 11 is connected to an oil pump, and the outlet hole 12 is connected to an actuator. A valve body 2 and a filter housing 13 are integrally formed on the gearbox housing 1. The valve body 2 and the filter housing 13 are respectively arranged on two sides of the gearbox housing 1 to make full use of the installation space, which is conducive to the miniaturization of the gearbox. A safety chamber 21, a main oil pressure regulating chamber 22 and a solenoid valve chamber 23 are arranged in sequence in the valve body 2. The safety chamber 21 is connected to the inlet hole 11, and the solenoid valve chamber 23 is connected to the outlet hole 12. An energy storage chamber 24 is also arranged in the valve body 2, and the energy storage chamber 24 is connected to the outlet hole 12. A safety valve core 27 is arranged in the safety chamber 21, a main oil pressure regulating valve core 26 is arranged in the main oil pressure regulating chamber 22, an accumulator 29 is arranged in the energy storage chamber 24, and a solenoid valve core 28 is arranged in the solenoid valve chamber 23.

[0045] Specifically, refer to Figure 3 and Figure 4The valve body 2 is provided with a first connecting chamber 25 and a safety connecting chamber 251, which are perpendicular to each other and are arranged parallel to the gearbox housing 1. The safety chamber 21 is arranged perpendicular to the gearbox housing 1, and includes a large-diameter chamber 211 and a small-diameter chamber 212 which are coaxial and interconnected. One end of the first connecting chamber 25 is connected to the inlet hole 11, and the other end is connected to the small-diameter chamber 212. One end of the safety connecting chamber 251 is connected to the small-diameter chamber 212, and the other end is connected to the main oil pressure regulating chamber 22. The first connecting chamber 25 and the safety connecting chamber 251 are staggered along the axial direction of the small-diameter chamber 212.

[0046] Reference Figure 1 and Figure 3 A filter chamber 131 is provided in the filter housing 13, a filter element 132 is provided in the filter chamber 131, one end of the filter chamber 131 is connected to the inlet hole 11, and the other end of the filter chamber 131 is connected to the first connecting chamber 25, so as to filter the oil. The filter element 132 can be a high-pressure filter element.

[0047] Specifically, the safety valve core 27 includes a first plug 271, a blocking ball 272 and a third adjusting spring 273. The blocking ball 272 is located in the large diameter cavity 211 and is used to block the small diameter cavity 212. The first plug 271 is threadedly connected to the large diameter cavity 211, and the third adjusting spring 273 is located between the first plug 271 and the blocking ball 272 to apply pressure to the blocking ball 272 so that the blocking ball 272 is tightly attached to the junction of the large diameter cavity 211 and the small diameter cavity 212. The first plug 271 is provided with a pressure relief hole 2711 along its own axial direction, so that after the oil pushes the blocking ball 272 away, it flows out from the pressure relief hole 2711 to achieve safe pressure relief.

[0048] Reference Figure 4 and Figure 5 , the side wall of the main oil pressure regulating valve core 26 is arranged in close contact with the inner wall of the main oil pressure regulating chamber 22, the main oil pressure regulating valve core 26 is provided with a first annular groove 264, and the main oil pressure regulating chamber 22 is connected with an electromagnetic connection chamber 235 for communicating with the energy storage chamber 24. During operation, the oil passes through the first annular groove 264 from the safety connection chamber 251 and flows into the electromagnetic connection chamber 235. The main oil pressure regulating chamber 22 is coaxially connected with the pressure regulating chamber 221, and the diameter of the pressure regulating chamber 221 is smaller than the diameter of the main oil pressure regulating chamber 22. The main oil pressure regulating valve core 26 is integrally formed with a regulating head 261, which is inserted into the pressure regulating chamber 221, and the side wall of the regulating head 261 is in close contact with the inner wall of the pressure regulating chamber 221. The electromagnetic connection chamber 235 is connected to a balance chamber 222 , and the other end of the balance chamber 222 is connected to the pressure regulating chamber 221 , so that the pressure in the electromagnetic connection chamber 235 can act on the pressure regulating chamber 221 .

[0049] More specifically, the balancing chamber 222 includes a first large balancing hole 2221 and a first small balancing hole 2222 that are coaxially connected, and a second large balancing hole 2223 and a second small balancing hole 2224 that are coaxially connected. The diameters of the first large balancing hole 2221 and the second large balancing hole 2223 are the same, and the diameters of the first small balancing hole 2222 and the second small balancing hole 2224 are the same, and the diameter of the first large balancing hole 2221 is greater than the diameter of the first small balancing hole 2222. The first large balancing hole 2221 is connected to the pressure regulating chamber 221, the first small balancing hole 2222 is connected to the second large balancing hole 2223, and the second small balancing hole 2224 is connected to the electromagnetic connection chamber 235. The combination of large balancing holes and small balancing holes is used to reduce the difficulty of hole processing.

[0050] A first regulating spring 262 is provided in the main oil pressure regulating chamber 22, and a first slot 223 is provided on the valve body 2. The first slot 223 is arranged perpendicular to the main oil pressure regulating chamber 22 and communicated with the main oil pressure regulating chamber 22. A first insert 263 is inserted in the first slot 223. A portion of the first insert 263 is located in the main oil pressure regulating chamber 22 and is located at an end of the main oil pressure regulating chamber 22 with an opening. The first regulating spring 262 is located between the first insert 263 and the main oil pressure regulating valve core 26 to apply pressure to the main oil pressure regulating valve core 26 to move the main oil pressure regulating valve core 26 toward the regulating chamber. The first insert 263 can provide support for the first regulating spring 262. At the same time, due to the large elastic force of the first regulating spring 262, a reaction force can also be applied to the first insert 263, so that the first insert 263 is stably inserted into the first slot 223 without the need to use other fixing structures for fixing.

[0051] When the pressure in the electromagnetic connection chamber 235 is too high, the oil pressure in the electromagnetic connection chamber 235 acts on the regulating head 261 through the balancing chamber 222 and the pressure regulating chamber 221, so that the main oil pressure regulating valve core 26 overcomes the pressure of the first regulating spring 262 and moves toward the first regulating spring 262, thereby reducing the flow rate of the first annular groove 264 input to the electromagnetic connection chamber 235, and also reducing the pressure in the electromagnetic connection chamber 235. When the pressure in the electromagnetic connection chamber 235 is too low, the pressure applied to the main oil pressure regulating valve core 26 by the first regulating spring 262 is greater than the pressure of the oil in the electromagnetic connection chamber 235 acting on the main oil pressure regulating valve core 26, so that the main oil pressure regulating valve core 26 moves toward the regulating chamber, thereby increasing the flow rate of the first annular groove 264 entering the electromagnetic connection chamber 235, that is, increasing the pressure in the electromagnetic connection chamber 235, thereby making the relative pressure in the electromagnetic connection chamber 235 relatively stable, thereby providing a stable pressure source for the electromagnetic valve chamber 23.

[0052] In addition, refer to Figure 1 and Figure 5The solenoid valve chamber 23 is connected to a measuring chamber 233, and a first pressure sensor 234 is threadedly connected to the inner wall of the measuring chamber 233. The first pressure sensor 234 is electrically connected to the solenoid valve core 28. The first pressure sensor 234 is convenient for monitoring the pressure in the solenoid valve chamber 23, that is, monitoring the input pressure of the solenoid valve chamber 23. A second pressure sensor 2341 is also installed on the valve body 2. The second pressure sensor 2341 is used to monitor the pressure of the outlet hole 12, that is, monitor the output pressure of the solenoid valve chamber 23, thereby improving the precise control of the oil pressure by the solenoid valve core 28.

[0053] A clamping plate 282 is also fixed to the valve body 2 by bolts. The clamping plate 282 is used to connect with the electromagnetic valve core 28 to firmly press the electromagnetic valve core 28 onto the housing and prevent the electromagnetic valve core 28 from rotating.

[0054] Specifically, the solenoid valve chamber 23 has a plurality of cylindrical holes 231 of different diameters, and adjacent cylindrical holes 231 are connected through conical holes 232. The measuring chamber 233 is connected to the side wall of the cylindrical hole 231, and the measuring chamber 233 is not connected to the side wall of the conical hole 232, which can reduce the possibility of the sharp corners formed at the junction of the measuring chamber 233 and the conical hole 232 damaging the sealing ring on the solenoid valve core 28 when the solenoid valve core 28 is working. When working, the relative position of the solenoid valve core 28 in the solenoid valve chamber 23 is controlled by controlling the magnitude of the current input to the solenoid valve core 28, thereby controlling the oil pressure.

[0055] Reference Figure 6 The accumulator 29 includes an energy storage shell 291 and a second regulating spring 292. The energy storage shell 291 slides in the energy storage chamber 24. A second slot is provided on the valve body 2. The second slot is perpendicular to the energy storage chamber 24 and communicates with the energy storage chamber 24. A second plug 293 is inserted in the second slot. A portion of the first plug 263 is located in the energy storage chamber 24 and at one end of the opening of the energy storage chamber 24. The second regulating spring 292 is provided between the energy storage shell 291 and the second plug 293 to apply pressure to the energy storage shell 291. One end of the energy storage chamber 24 away from the second plug 293 is communicated with the outlet 12 so that the oil in the outlet 12 can enter the energy storage chamber 24.

[0056] When the pressure of the oil in the outlet hole 12 acting on the energy storage shell 291 is greater than the pressure applied to the energy storage shell 291 by the second adjusting spring 292, that is, when the oil pressure in the outlet hole 12 is greater than the demand, the energy storage shell 291 moves toward the second plug 293 to accumulate oil between the energy storage shell 291 and the side wall of the energy storage chamber 24, and at the same time reduce the oil pressure in the outlet hole 12; when the pressure of the oil in the outlet hole 12 acting on the energy storage shell 291 is less than the pressure applied to the energy storage shell 291 by the second adjusting spring 292, that is, when the oil pressure in the outlet hole 12 is less than the demand, the energy storage shell 291 moves in the direction away from the second plug 293, so that the oil accumulated between the energy storage shell 291 and the side wall of the energy storage chamber 24 is transported to the electromagnetic connection chamber 235, and at the same time increase the oil pressure in the outlet hole 12 to achieve demand compensation.

[0057] It should be noted that the first adjustment spring 262 , the second adjustment spring 292 and the third adjustment spring 273 may all be compression springs.

[0058] Working principle: During operation, the oil is input from the oil pump into the inlet hole 11, first enters the filter chamber 131, is filtered by the filter element 132, enters the first connecting chamber 25, then passes through the small diameter chamber 212 and the safety connecting chamber 251 to enter the main oil pressure regulating chamber 22, and then passes through the first annular groove 264 and the electromagnetic connecting chamber 235 to enter the solenoid valve chamber 23, and is finally output from the outlet hole 12 to the actuator.

[0059] A processing technology, based on the above-mentioned integrated gearbox housing, comprises the following steps:

[0060] S1. The gearbox housing 1 and the valve body 2 are formed by die casting. During the die casting, the filter chamber 131, the safety chamber 21, the main oil pressure regulating chamber 22, the energy storage chamber 24, the solenoid valve chamber 23, the measuring chamber 233, the inlet hole 11 and the outlet hole 12, etc., which have a larger diameter or are perpendicular to the gearbox housing 1, are also formed together, which can reduce subsequent processing procedures and reduce costs.

[0061] S2. Use a five-axis machine tool to process the side of the gearbox housing 1 with the filter housing 13, the inlet hole 11 and the outlet hole 12. During processing, use the side of the gearbox housing 1 with the valve body 2 as a rough reference, perform fine milling on the side of the gearbox housing 1 with the filter housing 13, and perform reaming and fine processing on the inlet hole 11 and the outlet hole 12.

[0062] S3. With one side of the transmission housing 1 having the filter housing 13, the inlet hole 11 and the outlet hole 12 as the precision reference, a five-axis machine tool is used to precisely machine the filter chamber 131, the first connection chamber 25, the safety chamber 21, the safety connection chamber 251, the energy storage connection chamber, the main oil pressure regulating chamber 22, the energy storage chamber 24, the solenoid valve chamber 23, the balance chamber 222, the pressure regulating chamber 221 and the measuring chamber 233. Among them, since the main oil pressure regulating chamber 22 has a deep depth and high progress requirements, it is difficult for ordinary machining tools to achieve the required accuracy. Therefore, a forming tool is used to machine the main oil pressure regulating chamber 22. By limiting the dimensional accuracy of the forming tool, the main oil pressure regulating chamber 22 machined by the forming tool meets the design requirements. The forming tool is a special tool with the same shape and size as the hole position to be machined. The hole position size after machining by the forming tool is the required hole position size.

[0063] In addition, when processing holes with a long length and a small diameter, the drill bit is prone to breakage. Therefore, when processing the first large balancing hole 2221, the first small balancing hole 2222, the second large balancing hole 2223 and the second small balancing hole 2224, the first large balancing hole 2221 and the second large balancing hole 2223 are first processed respectively using a large drill bit, and then the first small balancing hole 2222 and the second small balancing hole 2224 are processed respectively using a small drill bit.

[0064] S4. When installing the safety valve core 27 , first put the blocking ball 272 and the third adjusting spring 273 into the large-diameter cavity 211 , and then threadably connect the first plug 271 to the large-diameter cavity 211 .

[0065] When installing the main oil pressure regulating valve core 26, insert the main oil pressure regulating valve core 26 into the main oil pressure regulating chamber 22, then put the first regulating spring 262 into the main oil pressure regulating chamber 22, and finally insert the first plug plate into the first slot 223, so that the first regulating spring 262 is located between the first plug plate and the main oil pressure regulating valve core 26. Install the second plug on the first large balance hole 2221 and the second large balance hole 2223 to prevent leakage. The first regulating spring 262 has a large elastic force and can fix the first plug plate, but this also makes it difficult for the operator to manually install the first regulating spring 262, so the main oil pressure regulating valve core 26 is installed using a plug-in tool.

[0066] Reference Figure 7 and Figure 8The plug-in tooling includes a frame 3, on which a first hydraulic cylinder 31 and a second hydraulic cylinder 32 are fixedly connected, and an adsorption pressing member 33 is fixedly connected to the piston rod of the first hydraulic cylinder 31, and the adsorption pressing member 33 is used to adsorb the main oil pressure regulating valve core 26 and make the first regulating spring 262 in a pressed state, and an insert block 34 is fixedly connected to the piston rod of the second hydraulic cylinder 32, and the insert block 34 is provided with a limiting groove for placing the first insert piece 263. During assembly, the main oil pressure regulating valve core 26 and the first regulating spring 262 are placed in the main oil pressure regulating chamber 22 through the first hydraulic cylinder 31, and the first regulating spring 262 is in a pressed state, and the first insert piece 263 is inserted into the first slot 223 through the second hydraulic cylinder 32, and the first insert piece 263 is abutted against the first regulating spring 262.

[0067] Specifically, the first hydraulic cylinder 31 is arranged in the vertical direction, the second hydraulic cylinder 32 is arranged in the horizontal direction, and the first hydraulic cylinder 31 is perpendicular to the second hydraulic cylinder 32. An adsorption hole 331 is provided at one end of the adsorption pressing member 33 away from the first hydraulic cylinder 31, for inserting one end of the main oil pressure regulating valve core 26, and a negative pressure pipe 332 is connected to the adsorption pressing member 33, and the negative pressure pipe 332 is connected to the adsorption hole 331 to adsorb the main oil pressure regulating valve core 26. A pressure plate 333 is also fixedly connected to the adsorption pressing member 33, and the pressure plate 333 is used to press the first regulating spring 262.

[0068] More specifically, the frame 3 is fixedly connected with a mounting box 35, and the adsorption pressing member 33 passes through the mounting box 35. A pressing block 351 is slidably disposed in the mounting box 35 in the vertical direction, and the pressing block 351 is fitted with the adsorption pressing member 33. A linkage block 334 is fixedly connected to the side wall of the adsorption pressing member 33, and a linkage groove 352 is provided on the side wall of the pressing block 351 for the linkage block 334 to slide. The pressing block 351 has a first groove wall 353 and a second groove wall 354 in the vertical direction, and the first groove wall 353 is located above the second groove wall 354. When the linkage block 334 abuts against the first groove wall 353, the bottom surface of the pressing block 351 is flush with the bottom surface of the pressing plate 333. When the adsorption pressing member 33 moves downward, the linkage block 334 abuts against the second slot wall 354 , driving the pressing block 351 to move downward, so that the pressing block 351 and the clamping plate 282 jointly press the first adjusting spring 262 , and the first adjusting spring 262 is located below the first slot 223 .

[0069] A limit block 355 is also slidable in the horizontal direction in the installation box 35, and the limit block 355 is used to abut against the top surface of the pressing block 351. A clamping block 356 is fixedly connected to the limit block 355, and a first inclined surface 358 is provided at one end of the clamping block 356 facing the adsorption pressing member 33, and a return spring 357 is provided at one end of the limit block 355 away from the adsorption pressing member 33. A shifting block 335 is fixedly connected to the side wall of the adsorption pressing member 33, and a second inclined surface 336 is provided on the shifting block 335 for cooperating with the first inclined surface 358. After the pressing block 351 and the clamping plate 282 jointly press the first adjusting spring 262, the piston rod of the first hydraulic cylinder 31 moves upward, driving the adsorption and pressing member 33 to move upward, and the clamping plate 282 also moves upward with the adsorption and pressing member 33. At this time, the piston rod of the second hydraulic cylinder 32 extends, driving the first insert piece 263 to insert into the first slot 223 and be located above part of the first adjusting spring 262. At this time, the piston rod of the first hydraulic cylinder 31 continues to move upward, and the second inclined surface 336 abuts against the first inclined surface 358, so that the limit block 355 overcomes the pressure of the return spring 357 and moves in the direction away from the adsorption and pressing member 33, thereby making the limit block 355 no longer contact the top surface of the pressing block 351. At this time, the linkage block 334 abuts against the first groove wall 353, driving the pressing block 351 to move upward, and the piston rod of the second hydraulic cylinder 32 continues to extend, so that the first insert piece 263 is completely inserted into the first slot 223, completing the installation of the main oil pressure regulating valve core 26. The return spring 357 is a compression spring.

[0070] During assembly, the first regulating spring 262 is sleeved on one end of the main oil pressure regulating valve core 26, and the end of the main oil pressure regulating valve core 26 sleeved with the first regulating spring is inserted into the adsorption pressing member 33, and the first inserting piece 263 is inserted into the limiting groove. Then the piston rod of the first hydraulic cylinder 31 moves downward, driving the adsorption pressing member 33 to move downward, the linkage block 334 abuts against the second groove wall 354, driving the pressing block 351 to move downward, and then the main oil pressure regulating valve core 26 is accurately inserted into the main oil pressure regulating chamber 22, and the pressing block 351 and the clamping plate 282 jointly press the first regulating spring 262, and the first regulating spring 262 is located below the first slot 223. Subsequently, the piston rod of the first hydraulic cylinder 31 moves upward, driving the adsorption and pressing member 33 to move upward, and the clamping plate 282 also moves upward with the adsorption and pressing member 33. At this time, the piston rod of the second hydraulic cylinder 32 extends out, driving the first insert piece 263 to insert into the first slot 223 and be located above part of the first adjusting spring 262. At this time, the piston rod of the first hydraulic cylinder 31 continues to move upward, and the second inclined surface 336 abuts against the first inclined surface 358, so that the limit block 355 overcomes the pressure of the return spring 357 and moves in the direction away from the adsorption and pressing member 33, thereby making the limit block 355 no longer contact the top surface of the pressing block 351. At this time, the linkage block 334 abuts against the first groove wall 353, driving the pressing block 351 to move upward, and the piston rod of the second hydraulic cylinder 32 continues to extend, so that the first insert piece 263 is completely inserted into the first slot 223, completing the installation of the main oil pressure regulating valve core 26.

[0071] When installing the energy accumulator 29 , the energy storage shell 291 and the second adjustment spring 292 are sequentially placed in the energy storage chamber 24 , and then the second inserting piece 293 is inserted into the second slot, so that the second adjustment spring 292 is located between the second inserting piece 293 and the energy storage shell 291 .

[0072] When installing the electromagnetic valve core 28 , the electromagnetic valve core 28 is placed into the electromagnetic valve chamber 23 , and the electromagnetic valve core 28 is connected to the clamping plate 282 .

[0073] When installing the first pressure sensor 234 , the first pressure sensor 234 is threadedly connected to the inner wall of the measuring cavity 233 .

[0074] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An integrated gearbox housing, characterized in that: include A gearbox housing (1), wherein the gearbox housing (1) is provided with an inlet hole (11) and an outlet hole (12); A valve body (2) is integrally formed on a gearbox housing (1), wherein the valve body (2) is provided with a safety chamber (21), a main oil pressure regulating chamber (22) and a solenoid valve chamber (23) which are connected in sequence, wherein the safety chamber (21) is connected with an inlet hole (11), and the solenoid valve chamber (23) is connected with an outlet hole (12). The valve body (2) is also provided with an energy storage chamber (24), and the energy storage chamber (24) is connected with the outlet hole (12). A safety valve core (27) is provided in the safety chamber (21), a main oil pressure regulating valve core (26) is provided in the main oil pressure regulating chamber (22), an accumulator (29) is provided in the energy storage chamber (24), and a solenoid valve core (28) is provided in the solenoid valve chamber (23); A filter housing (13) is integrally formed on a side of the transmission housing (1) away from the valve body (2); a filter chamber (131) is provided in the filter housing (13); a filter core (132) is provided in the filter chamber (131); one end of the filter chamber (131) is communicated with the inlet hole (11); and the other end of the filter chamber (131) is communicated with the safety chamber (21); The main oil pressure regulating valve core (26) is provided with a first annular groove (264); the main oil pressure regulating chamber (22) is connected with a safety connecting chamber (251) for communicating with the safety chamber (21); the main oil pressure regulating chamber (22) is connected with an electromagnetic connecting chamber (235) for communicating with the energy storage chamber (24); the oil in the safety connecting chamber (251) passes through the first annular groove (264) and flows into the electromagnetic connecting chamber (235); The main oil pressure regulating chamber (22) is coaxially connected with a pressure regulating chamber (221); a regulating head (261) is provided on the main oil pressure regulating valve core (26); the regulating head (261) is inserted into the pressure regulating chamber (221); the electromagnetic connection chamber (235) is connected with a balancing chamber (222); the other end of the balancing chamber (222) is connected with the pressure regulating chamber (221), so that the pressure in the electromagnetic connection chamber (235) can act on the pressure regulating chamber (221); the cross-sectional size of the pressure regulating chamber (221) is smaller than the cross-sectional size of the main oil pressure regulating chamber (22); A first regulating spring (262) and a first insert (263) are provided in the main oil pressure regulating chamber (22); the first insert (263) is connected to an end of the main oil pressure regulating chamber (22) having an opening; the first regulating spring (262) is provided between the first insert (263) and the main oil pressure regulating valve core (26) to apply pressure to the main oil pressure regulating valve core (26) so as to cause the main oil pressure regulating valve core (26) to move toward the regulating chamber; When the pressure in the electromagnetic connection chamber (235) is too high, the oil pressure in the electromagnetic connection chamber (235) acts on the regulating head (261), so that the main oil pressure regulating valve core (26) overcomes the pressure of the first regulating spring (262) and moves toward the first regulating spring (262), thereby reducing the flow rate input from the first annular groove (264) to the electromagnetic connection chamber (235); When the pressure in the electromagnetic connection chamber (235) is too low, the pressure applied by the first regulating spring (262) to the main oil pressure regulating valve core (26) is greater than the pressure of the oil in the electromagnetic connection chamber (235) acting on the main oil pressure regulating valve core (26), causing the main oil pressure regulating valve core (26) to move toward the regulating chamber, thereby increasing the flow rate of the first annular groove (264) entering the electromagnetic connection chamber (235).

2. The integrated gearbox housing according to claim 1, characterized in that: The energy accumulator (29) comprises an energy storage shell (291), a second adjustment spring (292) and a second plug-in sheet (293); the energy storage shell (291) slides in the energy storage chamber (24); the second plug-in sheet (293) is connected to one end of the opening of the energy storage chamber (24); the second adjustment spring (292) is arranged between the energy storage shell (291) and the second plug-in sheet (293); and one end of the energy storage chamber (24) away from the second plug-in sheet (293) is connected to the outlet hole (12); When the pressure exerted by the oil in the outlet hole (12) on the energy storage shell (291) is greater than the pressure exerted by the second adjustment spring (292) on the energy storage shell (291), the energy storage shell (291) moves toward the second inserting piece (293) to accumulate oil between the energy storage shell (291) and the side wall of the energy storage chamber (24); When the pressure exerted by the oil in the outlet hole (12) on the energy storage shell (291) is less than the pressure exerted by the second adjustment spring (292) on the energy storage shell (291), the energy storage shell (291) moves in a direction away from the second plug sheet (293), so that the oil accumulated between the energy storage shell (291) and the side wall of the energy storage chamber (24) is transported to the electromagnetic connection chamber (235).

3. The integrated gearbox housing according to claim 2, characterized in that: A first connecting chamber (25) is provided in the valve body (2); the first connecting chamber (25) and the safety connecting chamber (251) are perpendicular to each other; the first connecting chamber (25) and the safety connecting chamber (251) are both arranged parallel to the gearbox housing (1); the safety chamber (21) is arranged perpendicular to the gearbox housing (1); and the safety chamber (21) comprises a large-diameter chamber (211) and a small-diameter chamber (212) which are connected to each other; One end of the first connecting cavity (25) is in communication with the inlet hole (11), and the other end is in communication with the small diameter cavity (212), and the small diameter cavity (212) is in communication with the safety connecting cavity (251); The safety valve core (27) includes a first plug (271), a sealing ball (272) and a third adjusting spring (273); the sealing ball (272) is located in the large diameter cavity (211) and is used to seal the small diameter cavity (212); the first plug (271) is threadedly connected to the large diameter cavity (211); the third adjusting spring (273) is located between the first plug (271) and the sealing ball (272); and the first plug (271) is provided with a pressure relief hole (2711) extending through the first plug along its axial direction.

4. The integrated gearbox housing according to claim 3, characterized in that: The solenoid valve cavity (23) is connected to a measuring cavity (233), a first pressure sensor (234) is provided in the measuring cavity (233), and the first pressure sensor (234) is electrically connected to the solenoid valve core (28).

5. The integrated gearbox housing according to claim 4, characterized in that: The solenoid valve cavity (23) has a plurality of cylindrical holes (231) with different diameters, adjacent cylindrical holes (231) are connected via conical holes (232), and the measuring cavity (233) is in communication with the side walls of the cylindrical holes (231).

6. A processing technology, based on the integrated gearbox housing according to claim 5, characterized in that: The steps include: S1, forming the gearbox housing (1) and the valve body (2) by die-casting; S2, processing the transmission housing (1) having a side of the filter housing (13), the inlet hole (11) and the outlet hole (12); S3, taking the one side of the transmission housing (1) having the filter housing (13), the inlet hole (11) and the outlet hole (12) as a reference, processing a filter chamber (131), a first connecting chamber (25), a safety chamber (21), a safety connecting chamber (251), an energy storage connecting chamber, a main oil pressure regulating chamber (22), an energy storage chamber (24), a solenoid valve chamber (23), a balancing chamber (222), a pressure regulating chamber (221) and a measuring chamber (233); S4. Install the safety valve core (27) in the safety chamber (21), install the main oil pressure regulating valve core (26) in the main oil pressure regulating chamber (22), install the accumulator (29) in the energy storage chamber (24), install the solenoid valve core (28) in the solenoid valve chamber (23), and install the first pressure sensor (234) in the measuring chamber (233).

7. The processing technology according to claim 6, characterized in that: In step S3, a forming tool is used to process the main oil pressure regulating chamber (22).

8. The processing technology according to claim 6, characterized in that: In step S3, the balancing chamber (222) comprises a first large balancing hole (2221) and a first small balancing hole (2222) that are coaxially connected, and a second large balancing hole (2223) and a second small balancing hole (2224) that are coaxially connected, the first large balancing hole (2221) is connected to the pressure regulating chamber (221) by a connecting pipe, the first small balancing hole (2222) is connected to the second large balancing hole (2223), and the second small balancing hole (2224) is connected to the electromagnetic connection chamber (235); When processing the first large balancing hole (2221), the first small balancing hole (2222), the second large balancing hole (2223) and the second small balancing hole (2224), the first large balancing hole (2221) and the second large balancing hole (2223) are firstly processed by a large drill bit, and then the first small balancing hole (2222) and the second small balancing hole (2224) are processed by a small drill bit.

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