Modular gear transmission and hydraulic pump interface structure

Abstract

The utility model discloses a modularized gear transmission and hydraulic pump interface structure, which comprises a bearing seat and a transmission gear, the bearing seat comprises a gear chamber end fixing surface and a hydraulic pump end fixing surface, the gear chamber end fixing surface is fixedly connected with a gear chamber, and the hydraulic pump end fixing surface is fixedly connected with a hydraulic pump. A transmission gear mounting hole is formed in the middle of the gear chamber end fixing surface of the bearing seat, the transmission gear is connected with the transmission gear mounting hole through a bearing, positioning clamp springs are arranged at the top and the bottom, close to the gear chamber end fixing surface, in the transmission gear mounting hole, and a lubricating oil way communicated with the transmission gear mounting hole is arranged at the bottom of the bearing seat. The problem that an existing engine hydraulic gear transmission structure is large in design and development difficulty due to the fact that relevant parameters of a gear, the arrangement position of a connector, the axial size of gear transmission, the matching form and the like need to be considered is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a modular gear transmission and hydraulic pump interface structure. Background Art

[0002] Hydraulic pump gears and bearings are important components of the engine hydraulic drive system, which determines the driving form and reliability of the engine hydraulic power.

[0003] During the design and development of the engine hydraulic gear transmission, a lot of calculation work needs to be done. The relevant parameters of the gears, the layout of the interfaces, the axial dimensions of the gear transmission, the matching form, etc. all need to be designed from scratch. The corresponding work is relatively complicated, the spatial layout is difficult, and the strength and matching accuracy are difficult to grasp. Utility Model Content

[0004] The purpose of the utility model is to provide a modular gear transmission and hydraulic pump interface structure to solve the problem that the existing engine hydraulic gear transmission structure is difficult to design and develop because it is necessary to consider the relevant parameters of the gears, the layout position of the interface, the axial size of the gear transmission, the matching form and other aspects.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A modular gear transmission and hydraulic pump interface structure, including a bearing seat and a transmission gear, the bearing seat including a gear chamber end fixing surface and a hydraulic pump end fixing surface, the gear chamber end fixing surface is fixedly connected to the gear chamber, and the hydraulic pump end fixing surface is fixedly connected to the hydraulic pump, a transmission gear mounting hole is provided in the middle of the gear chamber end fixing surface of the bearing seat, the transmission gear is connected to the transmission gear mounting hole through a bearing, positioning springs are provided at the top and bottom of the transmission gear mounting hole near the gear chamber end fixing surface, and a lubricating oil path connected to the transmission gear mounting hole is provided at the bottom of the bearing seat.

[0007] In this solution, the connecting piece of the structure is a bearing support seat, which also serves as a power function interface, and in this solution is a hydraulic pump interface. One side of the bearing support seat is fixed to the gear chamber to realize the transmission between the gear in the structure and the driving gear in the gear chamber. The other side of the bearing support seat is fixedly connected to the hydraulic pump to realize power transmission and conversion, and the internal support bearing is lubricated and cooled through the lubricating oil circuit to increase the service life of the bearing.

[0008] The specific advantages of this solution are that multiple parts are unified into one device. The entire structure realizes the modularization and integration of the gear structure and the hydraulic pump interface, making better use of the limited space, making it more compact on the engine, and having higher space utilization. The entire structure has strong versatility, and the structure as a whole can be transplanted to different models and different positions, arranged as required, and the relevant parameters of the driving gear can be reversed according to the spatial position; the structure can meet the different requirements of various models and positions by fine-tuning the external tooth parameters of the gear and the axial length of the gear shaft, greatly reducing the difficulty of design and development, saving costs, and improving the appearance quality. It has strong processability and feasibility, good promotion, and is also simple to disassemble and convenient for single-unit maintenance.

[0009] As a further preferred embodiment of the utility model, a machine gear internal spline is provided at the center position of the transmission gear, and the transmission gear includes a long shaft end, an external tooth portion and a short shaft end arranged in sequence from the inside to the outside, the long shaft end is arranged in the transmission gear mounting hole, and the outer wall of the external tooth portion is provided with gear external teeth.

[0010] As a further preferred embodiment of the present invention, the outer teeth of the gear are involute standard gears.

[0011] The external gears of the gears are standard involute gears, and the internal gears are SAE spline standard, which improves the market versatility and interchangeability.

[0012] As a further preferred embodiment of the present invention, the bearing comprises an outer bearing and an inner bearing, a gap is left between the outer bearing and the inner bearing, and a bearing retaining ring is provided at the gap.

[0013] Arranging two bearings, an outer bearing and an inner bearing, at the supporting end of the gear shaft can increase the support reliability and improve the bearing's ability to bear radial force. The purpose of the bearing retaining ring separating the two bearings is to ensure a certain axial clearance between the two bearings to ensure a very small amount of movement and avoid collision and jamming of the bearings.

[0014] As a further preferred embodiment of the present invention, the top end of the lubricating oil passage is communicated with a gap portion between the outer bearing and the inner bearing.

[0015] The top end of the lubricating oil circuit is connected to the gap between the outer bearing and the inner bearing, so that the oil in the lubricating oil circuit can be evenly distributed to the two bearings through the gap, thereby achieving better lubrication and cooling effects and increasing the service life of the bearings.

[0016] As a further preferred embodiment of the present invention, the gear chamber end fixing surface is provided with a rubber groove, and the hydraulic pump end fixing surface is provided with a positioning stop.

[0017] The glue groove is set to achieve sealing between the gear chamber and the gear chamber through sealant to prevent oil leakage, and the precision of assembly is ensured by cooperating with the locating shaft on the hydraulic pump through the stopper.

[0018] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects:

[0019] 1. The modularization and integration of gear structure and hydraulic pump interface improve the structural compactness and process of parts, separate the complex size matching and precise transmission requirements into one structure, reduce the processing difficulty of parts and improve the matching accuracy.

[0020] 2. The modularization and integration of the gear structure and hydraulic pump interface greatly improve the versatility of the gear structure and functional interface. The device can be transferred to different models as a whole, realizing universal interchangeability of different models.

[0021] 3. Arranging an outer bearing and an inner bearing at the supporting end of the gear shaft can increase the support reliability and improve the bearing's ability to bear radial force. The purpose of the bearing retaining ring separating the two bearings is to ensure a certain axial clearance between the two bearings to ensure a small amount of movement and avoid collision and jamming of the bearings.

[0022] 4. The top of the lubricating oil circuit is connected to the gap between the outer bearing and the inner bearing, so that the oil in the lubricating oil circuit can be evenly distributed to the two bearings through the gap, achieving better lubrication and cooling effects and increasing the service life of the bearings.

[0023] 5. The purpose of setting the glue groove is to achieve sealing between the gear chamber and the gear chamber through sealant to prevent oil leakage, and the precision of assembly is ensured by cooperating with the locating shaft on the hydraulic pump through the stopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall three-dimensional schematic diagram of the utility model.

[0025] Figure 2 It is a schematic diagram of the external mounting surface structure of the utility model.

[0026] Figure 3 It is a schematic diagram of the inner installation surface structure of the utility model.

[0027] Figure 4 It is a schematic diagram of the internal structure assembly of the utility model. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply 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 utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific embodiment 1:

[0035] Figure 1 , Figure 2 , Figure 3 , Figure 4A modular gear transmission and hydraulic pump interface structure is shown, including a bearing seat 1 and a transmission gear 2, the bearing seat 1 includes a gear chamber end fixing surface and a hydraulic pump end fixing surface, the gear chamber end fixing surface is fixedly connected to the gear chamber, and the hydraulic pump end fixing surface is fixedly connected to the hydraulic pump, a transmission gear mounting hole is provided in the middle of the gear chamber end fixing surface of the bearing seat 1, the transmission gear 2 is connected to the transmission gear mounting hole through a bearing 3, and positioning springs 4 are provided at the top and bottom of the transmission gear mounting hole near the gear chamber end fixing surface, and a lubricating oil path 5 connected to the transmission gear mounting hole is provided at the bottom of the bearing seat 1.

[0036] In this solution, the connecting piece of the structure is a bearing support seat, which also serves as a power function interface, and in this solution is a hydraulic pump interface. One side of the bearing support seat is fixed to the gear chamber to realize the transmission between the gear in the structure and the driving gear in the gear chamber. The other side of the bearing support seat is fixedly connected to the hydraulic pump to realize power transmission and conversion, and the internal support bearing is lubricated and cooled through the lubricating oil circuit to increase the service life of the bearing.

[0037] The specific advantages of this solution are that multiple parts are unified into one device. The entire structure realizes the modularization and integration of the gear structure and the hydraulic pump interface, making better use of the limited space, making it more compact on the engine, and having higher space utilization. The entire structure has strong versatility, and the structure as a whole can be transplanted to different models and different positions, arranged as required, and the relevant parameters of the driving gear can be reversed according to the spatial position; the structure can meet the different requirements of various models and positions by fine-tuning the external tooth parameters of the gear and the axial length of the gear shaft, greatly reducing the difficulty of design and development, saving costs, and improving the appearance quality. It has strong processability and feasibility, good promotion, and is also simple to disassemble and convenient for single-unit maintenance. Specific embodiment 2:

[0039] This embodiment further illustrates the transmission gear 2 based on the specific embodiment 1. A machine gear internal spline 6 is provided at the center of the transmission gear 2. The transmission gear 2 includes a long shaft end 21, an external tooth portion 22 and a short shaft end 23 arranged in sequence from the inside to the outside. The long shaft end 21 is arranged in the transmission gear mounting hole, and the outer wall of the external tooth portion 22 is provided with gear external teeth 7. Specific embodiment 3:

[0041] This embodiment further illustrates the gear external teeth 7 based on the specific embodiment 2, and the gear external teeth 7 are involute standard gears.

[0042] The external gears of the gears are standard involute gears, and the internal gears are SAE spline standard, which improves the market versatility and interchangeability. Specific embodiment 4:

[0044] This embodiment further illustrates the bearing 3 based on the specific embodiment 1. The bearing 3 includes an outer bearing 31 and an inner bearing 32. A gap is left between the outer bearing 31 and the inner bearing 32. A bearing retaining ring 8 is provided at the gap.

[0045] Arranging two bearings, an outer bearing and an inner bearing, at the supporting end of the gear shaft can increase the support reliability and improve the bearing's ability to bear radial force. The purpose of the bearing retaining ring separating the two bearings is to ensure a certain axial clearance between the two bearings to ensure a very small amount of movement and avoid collision and jamming of the bearings. Specific embodiment 5:

[0047] This embodiment further illustrates the lubricating oil passage 5 on the basis of the specific embodiment 4. The top end of the lubricating oil passage 5 is connected to the gap between the outer bearing 31 and the inner bearing 32 .

[0048] The top end of the lubricating oil circuit is connected to the gap between the outer bearing and the inner bearing, so that the oil in the lubricating oil circuit can be evenly distributed to the two bearings through the gap, thereby achieving better lubrication and cooling effects and increasing the service life of the bearings. Specific embodiment 6:

[0050] This embodiment further illustrates the gear chamber end fixing surface and the hydraulic pump end fixing surface on the basis of the specific embodiment 1. The gear chamber end fixing surface is provided with a rubber groove, and the hydraulic pump end fixing surface is provided with a positioning stop.

[0051] The glue groove is set to achieve sealing between the gear chamber and the gear chamber through sealant to prevent oil leakage, and the precision of assembly is ensured by cooperating with the locating shaft on the hydraulic pump through the stopper.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A modular gear transmission and hydraulic pump interface structure, characterized in that: The invention comprises a bearing seat (1) and a transmission gear (2), wherein the bearing seat (1) comprises a gear chamber end fixing surface and a hydraulic pump end fixing surface, wherein the gear chamber end fixing surface is fixedly connected to the gear chamber, and the hydraulic pump end fixing surface is fixedly connected to the hydraulic pump, wherein a transmission gear mounting hole is provided in the middle of the gear chamber end fixing surface of the bearing seat (1), wherein the transmission gear (2) is connected to the transmission gear mounting hole via a bearing (3), wherein positioning retaining springs (4) are provided at the top and bottom of the transmission gear mounting hole near the gear chamber end fixing surface, and wherein a lubricating oil path (5) communicating with the transmission gear mounting hole is provided at the bottom of the bearing seat (1).

2. The modular gear transmission and hydraulic pump interface structure according to claim 1, characterized in that: The transmission gear (2) is provided with a machine gear internal spline (6) at the center position. The transmission gear (2) comprises a long shaft end (21), an external tooth portion (22) and a short shaft end (23) which are arranged in sequence from the inside to the outside. The long shaft end (21) is arranged in a transmission gear mounting hole. The outer wall of the external tooth portion (22) is provided with gear external teeth (7).

3. The modular gear transmission and hydraulic pump interface structure according to claim 2, characterized in that: The gear outer teeth (7) are involute standard gears.

4. The modular gear transmission and hydraulic pump interface structure according to claim 1, characterized in that: The bearing (3) comprises an outer bearing (31) and an inner bearing (32), a gap is left between the outer bearing (31) and the inner bearing (32), and a bearing retaining ring (8) is provided at the gap.

5. The modular gear transmission and hydraulic pump interface structure according to claim 4, characterized in that: The top end of the lubricating oil passage (5) is connected to the gap between the outer bearing (31) and the inner bearing (32).

6. The modular gear transmission and hydraulic pump interface structure according to claim 1, characterized in that: The fixed surface at the end of the gear chamber is provided with a rubber groove, and the fixed surface at the end of the hydraulic pump is provided with a positioning stop.

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