Travel motor rear cover oil duct structure and motor rear cover
Through split casting and improved oil channel structure, the processing process of the motor back cover is simplified, the problems of complex structure and high processing difficulty in the prior art are solved, and the finished motor back cover with high strength and economical are realized.
Patent Information
- Application Number
- CN202323553507.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-12-25
AI Technical Summary
The structure of the existing motor back cover is complex, with many processing processes, difficult to clean the sand core, and difficult to cast part, resulting in loosening and shortage of materials in the blank, and high requirements for processing tools.
Using split casting high and low pressure oil passage structure, the improved design of balance valves, relief valves and pressure oil passages simplifies processing processes, reduces processing difficulty, increases casting ports to reduce waste rate, and obtains casting instead of processing by casting. Low pressure oil channel.
It realizes simple forming and high strength of the motor back cover, reduces processing processes and tool requirements, improves economy and finished product quality, and reduces blank waste rate and casting defects.
Smart Images
Figure CN222208471U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of travel motors, and in particular relates to a travel motor rear cover oil channel structure and a motor rear cover. Background Art
[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.
[0003] The motor is divided into two parts. One part is the shell, whose inner cavity contains the rotating component and the servo component. The other part is the back cover, which integrates various control valves of the motor to control various functions of the motor. The motor shell and the back cover are connected by bolts, and an O-ring is used to seal the shell and the back cover.
[0004] In the prior art, the motor back cover is integrated with structures such as a balance valve, a relief valve, and a one-way valve. The oil passages of these functional valves are high-pressure oil passages, and the return oil passages are low-pressure oil passages. The oil passages in the existing motor back cover are complex. For example, Chinese invention patent CN106989079A discloses a multifunctional integrated back cover assembly of a high-power conjoined pump motor. When the blank of the motor back cover is cast, the high-pressure oil passage is obtained by casting. The sand core structure of the back cover is complex, the sand core cleaning is difficult, and the demolding is difficult. The low-pressure oil passage is obtained by tool processing, which increases the processing steps. Therefore, since the existing motor back cover structure is relatively complex, although it can meet the requirements of multiple functions and strength, it has many processing steps and high requirements for processing tools. The casting part of the sand core is difficult and difficult to shape. The cast blank is prone to looseness and lack of materials, and the sand core cleaning is difficult. Utility Model Content
[0005] The utility model aims to provide a travel motor rear cover oil passage structure and a motor rear cover, which simplifies the machining process in the motor rear cover and reduces the machining difficulty of the motor rear cover by improving the oil passage structure.
[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:
[0007] In the first aspect, an embodiment of the utility model provides an oil channel structure of the rear cover of a traveling motor, including a balancing valve oil channel, an overflow valve oil channel, an oil return oil channel and a pressure-compensating oil channel, wherein the pressure-compensating oil channel is connected to the balancing valve oil channel and is controlled by the balancing valve; the pressure-compensating oil channel is also connected to the overflow valve flow channel and discharges oil through the overflow valve; the oil return oil channel connects the low-pressure oil inside the motor housing with the oil tank through a pipeline.
[0008] As a further technical solution, the balancing valve oil passage includes a first balancing valve oil passage and a second balancing valve oil passage, and the first balancing valve oil passage and the second balancing valve oil passage are arranged symmetrically.
[0009] As a further technical solution, the relief valve oil passage includes a first relief valve oil passage and a second relief valve oil passage, and the first relief valve oil passage and the second relief valve oil passage are symmetrically arranged.
[0010] As a further technical solution, the first balancing valve oil passage and the first overflow valve oil passage are arranged on the same side, and the second balancing valve oil passage and the second overflow valve oil passage are arranged on the same side.
[0011] As a further technical solution, the pressure-compensating oil passage is connected to the overflow valve oil passage through a waist-shaped oil passage.
[0012] As a further technical solution, the oil return passage includes a first oil return passage and a second oil return passage, and the first oil return passage and the second oil return passage are connected through an annular structure.
[0013] As a further technical solution, the oil return passage and the pressure compensation passage are arranged on the same side.
[0014] In the second aspect, an embodiment of the utility model provides a motor back cover, including the travel motor back cover oil channel structure described in the first aspect, and the motor back cover is provided with a balancing valve oil hole, an overflow valve oil hole, an oil return hole and an oil replenishing hole, the balancing valve oil hole and the balancing valve oil channel are connected, the overflow valve oil hole and the overflow valve oil channel are connected, the return oil hole and the return oil channel are connected, and the oil replenishing hole and the oil replenishing channel are connected.
[0015] As a further technical solution, the balance valve oil hole and the overflow valve oil hole are arranged on the same side, and the oil return hole and the oil replenishment hole are arranged on the same side.
[0016] As a further technical solution, a waist-shaped hole and a housing oil return hole are provided on the surface of the motor rear cover that is opposite to the motor housing.
[0017] The beneficial effects of the above-mentioned embodiments of the utility model are as follows:
[0018] The utility model improves the oil channel structure in the motor rear cover, so that the manufactured motor rear cover has a simple high and low pressure structure inside the blank while ensuring functionality and strength requirements, can be cast in parts and is easy to demold and form; the oil channel structure can be cast through multiple casting ports during casting, thereby reducing the scrap rate of the blank; the return oil low-pressure oil channel of the oil channel structure can be cast to reduce processing tools and processing procedures, thereby improving the economy of the motor.
[0019] The high and low pressure oil passages in the rear cover of the motor provided by the utility model can be cast in a split casting manner and are independent of each other, so they are easy to demold. Due to the split casting, there is an additional casting port, which reduces the scrap rate of the blank. The low pressure oil passage is connected to the inner cavity of the motor. The oil passage structure can be obtained by casting instead of machining, which reduces the machining steps and machining tools.
[0020] The utility model provides an oil channel structure in which the high-pressure oil channel integrates the oil channels of functional valves such as an overflow valve and a balancing valve. The overflow valve oil channel and the balancing valve oil channel are arranged on the same side. The utility model has a compact structure, a thick oil channel wall, and high strength. The end face interface of the high-pressure oil channel and the return oil channel are arranged on the same side, thereby reducing the processing steps. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0022] Figure 1 This is a schematic diagram of the first angle structure of the oil passage structure of the rear cover of the travel motor of the utility model;
[0023] Figure 2 This is a second angle structural diagram of the oil passage structure of the rear cover of the travel motor of the utility model;
[0024] Figure 3 This is a third angle structural diagram of the oil passage structure of the rear cover of the travel motor of the utility model;
[0025] Figure 4 This is a schematic diagram of the first angle structure of the motor rear cover of the utility model;
[0026] Figure 5 This is a second angle structural diagram of the motor rear cover of the utility model;
[0027] Figure 6 It is a third angle structural schematic diagram of the motor rear cover of the utility model.
[0028] The schematic diagram is for illustrative purposes only;
[0029] Among them, 1. the first pressure-compensating oil passage; 2. the second pressure-compensating oil passage; 3. the first oil return oil passage; 4. the second oil return oil passage; 5. the first balancing valve oil passage; 6. the second balancing valve oil passage; 7. the first overflow valve oil passage; 8. the second overflow valve oil passage; 9. the first waist-shaped oil passage; 10. the second waist-shaped oil passage; 11. the first connecting oil passage; 12. the second connecting oil passage; 13. the third connecting oil passage; 14. the fourth connecting oil passage; 15. the fifth connecting oil passage; 16. the sixth connecting oil passage; 17. the second balancing valve oil hole; 18. the second overflow valve oil hole; 19. the first overflow valve oil hole; 20. the first balancing valve oil hole; 21. the first oil return hole; 22. the first oil-compensating hole; 23. the second oil-compensating hole; 24. the second oil return hole; 25. the first shell oil return hole; 26. the second shell oil return hole; 27. the first waist-shaped hole; 28. the second waist-shaped hole. DETAILED DESCRIPTION
[0030] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0031] Example 1
[0032] In a typical embodiment of the utility model, a travel motor rear cover oil channel structure is provided, including a balancing valve oil channel, an overflow valve oil channel, an oil return oil channel and a pressure-compensating oil channel. The pressure-compensating oil channel is connected to the balancing valve oil channel and is controlled by the balancing valve; the pressure-compensating oil channel is also connected to the overflow valve flow channel and drains oil through the overflow valve; the oil return oil channel connects the low-pressure oil inside the motor housing with the oil tank through a pipeline.
[0033] Specifically, Figure 1-3 As shown, the balancing valve oil passage includes a first balancing valve oil passage 5 and a second balancing valve oil passage 6, which are symmetrically arranged on the left and right. The overflow valve oil passage includes a first overflow valve oil passage 7 and a second overflow valve oil passage 8, which are symmetrically arranged on the left and right. The first balancing valve oil passage 5 and the first overflow valve oil passage 7 are arranged on the same side, and the second balancing valve oil passage 6 and the second overflow valve oil passage 8 are arranged on the same side.
[0034] Further, the first overflow valve oil passage 7 is connected to the first connecting oil passage 11, the second overflow valve oil passage 8 is connected to the second connecting oil passage 12, the first balance valve oil passage 5 is connected to the first connecting oil passage 11 through the third connecting oil passage 13, the second balance valve oil passage 6 is connected to the second connecting oil passage 12 through the fourth connecting oil passage 14, and the third connecting oil passage 13 is connected to the fourth connecting oil passage 14.
[0035] In this embodiment, the pressure-compensating oil passage is connected to the overflow valve oil passage through a waist-shaped oil passage. When the oil pressure in the pressure-compensating oil passage is higher than the set pressure of the overflow valve, the high-pressure oil will leak through the overflow valve to protect the motor. The oil passage of this structure is simple and easy to cast, can withstand greater stress, and has good economy. Specifically, the pressure-compensating oil passage includes a first pressure-compensating oil passage 1 and a second pressure-compensating oil passage 2. The first pressure-compensating oil passage 1 is connected to the third connecting oil passage 13 through the fifth connecting oil passage 15, and the second pressure-compensating oil passage 2 is connected to the fourth connecting oil passage 14 through the sixth connecting oil passage 16. The first pressure-compensating oil passage 1 is also connected to the first waist-shaped oil passage 9 through the fifth connecting oil passage 15, and the second pressure-compensating oil passage 2 is also connected to the second waist-shaped oil passage 10 through the sixth connecting oil passage 16. The waist-shaped oil passage is used to complete the oil distribution function of the internal rotating components of the motor.
[0036] In this embodiment, the oil return passage includes a first oil return passage 3 and a second oil return passage 4, the first oil return passage 3 and the second oil return passage 4 are connected through an annular structure, and further, the oil return passage and the pressure compensation passage are arranged on the same side.
[0037] In this embodiment, the balancing valve oil passage, the overflow valve oil passage and the compensating pressure oil passage are high-pressure oil passages, and the return oil passage is a low-pressure oil passage. When preparing the above-mentioned oil passage structure, the oil passage structure provided in this embodiment is processed into an inner mold casting mold for casting, so as to realize the processing of the oil passage structure. The overflow valve, the balancing valve and other functional valve oil passages are integrated through the high-pressure oil passage. The overflow valve oil passage and the balancing valve oil passage are arranged on the same side, with a compact structure, thick oil passage wall and high strength. The end face interface of the high-pressure oil passage is arranged on the same side as the return oil passage, thereby reducing the processing steps. At the same time, the low-pressure return oil passage adopts a multi-port return oil structure and is cast separately from the high-pressure oil passage, thereby increasing the casting port, reducing the casting difficulty, casting defects and blank scrap rate, and the sand core is easy to clean.
[0038] Example 2
[0039] In a typical embodiment of the utility model, a motor back cover is provided, including the travel motor back cover oil channel structure described in Example 1, and a balancing valve oil hole, an overflow valve oil hole, an oil return hole and an oil replenishing hole are provided on the motor back cover, the balancing valve oil hole is connected to the balancing valve oil channel, the overflow valve oil hole is connected to the overflow valve oil channel, the return oil hole is connected to the return oil channel, and the oil replenishing hole is connected to the oil replenishing channel.
[0040] Specific as Figure 4-6 As shown, the balancing valve oil hole includes a first balancing valve oil hole 20 and a second balancing valve oil hole 17, the first balancing valve oil hole 20 is connected to the first balancing valve oil passage 5, and the second balancing valve oil hole 17 is connected to the second balancing valve oil passage 6; the overflow valve oil hole includes a first overflow valve oil hole 19 and a second overflow valve oil hole 18, the first overflow valve oil hole 19 is connected to the first overflow valve oil passage 7, and the second overflow valve oil hole 18 is connected to the second overflow valve oil passage 8; the oil replenishment hole includes a first oil replenishment hole 22 and a second oil replenishment hole 23, the first oil replenishment hole 22 is connected to the first pressure replenishment oil passage 1, and the second oil replenishment hole 23 is connected to the second pressure replenishment oil passage 2.
[0041] In this embodiment, the balance valve oil hole and the overflow valve oil hole are arranged on the same side, and the oil return hole and the oil replenishment hole are arranged on the same side.
[0042] In this embodiment, waist-shaped holes and housing oil return holes are provided on the surface of the motor rear cover opposite to the motor housing, the waist-shaped holes include a first waist-shaped hole 27 and a second waist-shaped hole 28, the first waist-shaped hole 27 is connected to the first waist-shaped oil channel 9, and the second waist-shaped hole 28 is connected to the second waist-shaped oil channel 10; the housing oil return hole includes a first housing oil return hole 25 and a second housing oil return hole 26, the first housing oil return hole 25 and the second housing oil return hole 26 are symmetrically arranged on the annular structure connecting the first oil return channel 3 and the second oil return channel 4, the first oil return channel 3 is connected to the first oil return hole 21, and the second oil return channel 4 is connected to the second oil return hole 24, and the low-pressure oil inside the housing is connected to the oil tank through a pipeline through the oil return hole and the oil return channel.
[0043] When preparing the motor back cover provided in this embodiment, high and low pressure oil passages are cast separately. The low pressure oil passages in the inner cavity of the back cover are cast without processing, which reduces the casting difficulty, blank casting defects and blank scrap rate, and reduces processing tools and processing steps. At the same time, the low pressure multi-port oil return passage increases the casting port, reduces the casting difficulty, reduces casting defects, and the sand core is easy to clean, which reduces the blank scrap rate.
[0044] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A travel motor rear cover oil channel structure, characterized in that: It includes a balancing valve oil passage, an overflow valve oil passage, an oil return oil passage and a pressure-compensating oil passage. The pressure-compensating oil passage is connected to the balancing valve oil passage and is controlled by the balancing valve; the pressure-compensating oil passage is also connected to the overflow valve flow passage and leaks oil through the overflow valve; the oil return oil passage connects the low-pressure oil inside the motor housing with the oil tank through a pipeline.
2. The travel motor rear cover oil passage structure according to claim 1, characterized in that: The balancing valve oil passage comprises a first balancing valve oil passage and a second balancing valve oil passage, and the first balancing valve oil passage and the second balancing valve oil passage are arranged symmetrically.
3. The travel motor rear cover oil passage structure according to claim 2, characterized in that: The relief valve oil passage comprises a first relief valve oil passage and a second relief valve oil passage, and the first relief valve oil passage and the second relief valve oil passage are arranged symmetrically.
4. The travel motor rear cover oil passage structure according to claim 3, characterized in that: The first balancing valve oil passage and the first overflow valve oil passage are arranged on the same side, and the second balancing valve oil passage and the second overflow valve oil passage are arranged on the same side.
5. The travel motor rear cover oil passage structure according to claim 1, characterized in that: The pressure-compensating oil passage is connected with the overflow valve oil passage through a waist-shaped oil passage.
6. The travel motor rear cover oil passage structure according to claim 1, characterized in that: The oil return passage comprises a first oil return passage and a second oil return passage, and the first oil return passage and the second oil return passage are connected via an annular structure.
7. The travel motor rear cover oil passage structure according to claim 1, characterized in that: The oil return passage and the pressure compensation passage are arranged on the same side.
8. A motor rear cover, comprising the travel motor rear cover oil passage structure according to any one of claims 1 to 7, characterized in that: The motor rear cover is provided with a balancing valve oil hole, a relief valve oil hole, an oil return hole and an oil replenishing hole. The balancing valve oil hole is connected to the balancing valve oil channel, the relief valve oil hole is connected to the relief valve oil channel, the return oil hole is connected to the return oil channel, and the oil replenishing hole is connected to the oil replenishing channel.
9. The motor back cover according to claim 8, characterized in that: The balance valve oil hole and the overflow valve oil hole are arranged on the same side, and the oil return hole and the oil replenishment hole are arranged on the same side.
10. The motor back cover according to claim 8, characterized in that: A waist-shaped hole and a shell oil return hole are arranged on the surface of the motor rear cover that is connected to the motor shell.