Belt-driven steering pump wheel train device

Abstract

The utility model relates to a belt-driven steering pump wheel train device which comprises a steering pump, a steering pump mounting bracket, a belt, a first mounting bolt, a mounting nut, a second mounting bolt, a third mounting bolt, a fourth mounting bolt and a fifth mounting bolt, the steering pump comprises a steering pump belt pulley and a steering pump body; the steering pump mounting bracket comprises a steering pump mounting platform and an engine mounting platform; a fifth mounting bolt penetrates through a first mounting through hole in the steering pump and is in bolted connection with the steering pump mounting bracket; the second mounting bolt penetrates through a third mounting through hole in the engine mounting platform, the third mounting bolt penetrates through a fourth mounting through hole in the engine mounting platform, and then the engine mounting platform is in bolted connection with the engine cylinder body. Risks of wheel train slipping, installation support breakage, steering pump belt pulley falling and the like are reduced. And the number of engine parts is reduced, the cost is reduced, and the complexity of research and development is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of a steering pump gear system at the front end of a diesel engine, in particular to a steering pump gear system device driven by a belt. Background Art

[0002] A diesel engine application requires a steering pump with an 18ml / r displacement attached to the diesel engine gear train. The steering pump is adapted for the vehicle's steering system, driving the flow of hydraulic oil within the pump to provide power steering assistance to the driver. The large-displacement steering pump required by diesel engines generally draws power from the gear train to drive the power steering pump. This is because diesel engines typically correspond to larger vehicle tonnage, requiring a power steering pump with a displacement far exceeding that of passenger cars and diesel engines under 3.0L. Large-displacement steering pumps correspond to greater flow, pressure, and volume. Generally, large-displacement steering pumps are not considered for placement in the front gear train and driven by a belt. Instead, they are typically placed in the gear train and driven by a cross key or spline.

[0003] The defects of the prior art are:

[0004] 1. Due to the larger flow, pressure and volume corresponding to the large-displacement steering pump in the existing technology, large-displacement steering pumps are generally not considered to be placed in the front gear train and driven by a belt. Instead, they are placed in the gear train and driven by a cross key or spline, which leads to a change in the gear train layout, increases the complexity of R&D, and increases costs.

[0005] 2. Since there is no remaining space in the current engine chain drive system to install the power steering pump, the power steering pump can only be driven by the belt of the gear system. However, before this, the displacement of the belt-driven power steering pump generally did not exceed 11ml / r. A larger displacement would bring greater pressure, which may cause risks such as gear system slippage, mounting bracket breakage, and steering pump pulley falling off. Summary of the Invention

[0006] In response to the above-mentioned problems, the present utility model provides a belt-driven steering pump gear train device, the purpose of which is to reduce the risks of gear train slippage, mounting bracket breakage, steering pump pulley falling off, etc.; streamline the number of engine parts, reduce costs, and reduce the complexity of research and development.

[0007] In order to solve the above problems, the technical solution provided by the present invention is as follows:

[0008] The belt-driven steering pump gear train device includes a steering pump, a steering pump mounting bracket, a belt, a first mounting bolt, a mounting nut, a second mounting bolt, a third mounting bolt, a fourth mounting bolt, and a fifth mounting bolt, wherein:

[0009] The steering pump comprises a steering pump pulley and a steering pump body;

[0010] The steering pump mounting bracket includes a steering pump mounting platform and an engine mounting platform; the structure of the connection side between the steering pump mounting platform and the steering pump matches the profile of the steering pump body; the fifth mounting bolt passes through the first mounting through hole on the steering pump and is bolted to the steering pump mounting bracket;

[0011] The second mounting bolt passes through the third mounting through hole on the engine mounting platform, the third mounting bolt passes through the fourth mounting through hole on the engine mounting platform, and then the engine mounting platform is bolted to the engine block;

[0012] The belt is respectively connected with the steering pump pulley and the engine crankshaft.

[0013] Preferably, a steering pump support for supporting the steering pump is provided between the steering pump mounting bracket and the steering pump; one end of the steering pump support is bolted to the steering pump mounting bracket through the fourth mounting bolt, and the other end is bolted to the second mounting through-hole on the steering pump through the first mounting bolt and the mounting nut.

[0014] Preferably, the belt is of model 8pk.

[0015] Preferably, the displacement of the steering pump is 18 ml / r, the pressure is 15.7 MPa, and the flow range is 15 L / min-17 L / min.

[0016] Preferably, the model of the first mounting bolt is M8X1.25; the model of the mounting nut is M8X1.25.

[0017] Preferably, the number of the second mounting bolts is 2; the model of the second mounting bolts is M10X1.5.

[0018] Preferably, the number of the third mounting bolts is 2; and the model of the third mounting bolts is M10X1.5.

[0019] Preferably, the number of the fourth mounting bolt is 1; the model of the fourth mounting bolt is M8X1.25.

[0020] Preferably, the number of the fifth mounting bolts is 2; and the model of the fifth mounting bolts is M8X1.25.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. Since the steering pump used in the utility model has a larger shape and a more reliable structure, the risks of gear train slipping, mounting bracket breakage, and steering pump pulley falling off are reduced.

[0023] 2. Since the present invention solves the problem of wheel train installation, the designed steering pump bracket and steering pump support also make the structure highly integrated, thereby streamlining the number of engine parts and reducing costs.

[0024] 3. Since the present invention does not require changes in the layout of the gear train and the pulley system, the complexity of research and development is reduced, and the cost changes caused by complex changes are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the steering pump gear system installation structure of a specific embodiment of the utility model;

[0026] Figure 2 This is a disassembled schematic diagram of a steering pump gear train according to a specific embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the input power curve of the large-displacement steering pump of the utility model;

[0028] Figure 4 This is a schematic diagram of the input power curve of a small-displacement steering pump in the prior art.

[0029] Wherein: 1. Steering pump, 2. Steering pump mounting bracket, 3. Steering pump support, 4. Belt, 5. First mounting bolt, 6. Mounting nut, 7. Second mounting bolt, 8. Third mounting bolt, 9. Fourth mounting bolt, 10. Fifth mounting bolt, 1.1. Steering pump pulley, 1.2. Steering pump body, 2.1. Steering pump mounting platform, 2.2. Engine mounting platform, 1.3. First mounting through hole, 1.4. Second mounting through hole, 2.2.1. Third mounting through hole, 2.2.2.4 mounting through hole DETAILED DESCRIPTION

[0030] The present invention is further illustrated below with reference to specific examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention made by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0031] The steering pump gear train is driven by a belt, such as Figure 1 and Figure 2 As shown, it includes a steering pump 1, a steering pump mounting bracket 2, a belt 4, a first mounting bolt 5, a mounting nut 6, a second mounting bolt 7, a third mounting bolt 8, a fourth mounting bolt 9, and a fifth mounting bolt 10, wherein:

[0032] The steering pump 1 comprises a steering pump pulley 1.1 and a steering pump body 1.2.

[0033] The steering pump mounting bracket 2 includes a steering pump mounting platform 2.1 and an engine mounting platform 2.2; the structure of the connection side of the steering pump mounting platform 2.1 and the steering pump 1 matches the contour of the steering pump body 1.2; the fifth mounting bolt 10 passes through the first mounting through hole 1.3 on the steering pump 1 and is bolted to the steering pump mounting bracket 2.

[0034] The second mounting bolt 7 passes through the third mounting through hole 2.2.1 on the engine mounting platform 2.2, and the third mounting bolt 8 passes through the fourth mounting through hole 2.2.2 on the engine mounting platform 2.2, and then the engine mounting platform 2.2 is bolted to the engine block.

[0035] The belt 4 is sleeve-connected to the steering pump pulley 1.1 and the engine crankshaft respectively.

[0036] It should be noted that the driving force of steering pump 1 comes from a belt, and the pulling force of drive belt 4 comes from the engine crankshaft. Belt 4 rotates steering pump pulley 1.1, and steering pump body 1.2 drives hydraulic oil and circulates it through the vehicle's steering system, providing steering assistance at various speeds for sanitation vehicles.

[0037] In this specific embodiment, the displacement of the steering pump 1 is 18 ml / r, the pressure is 15.7 MPa, and the flow rate range is 15 L / min-17 L / min.

[0038] It should be further explained that the steering pump 1 can circulate hydraulic oil to provide hydraulic power assistance for the vehicle steering system.

[0039] It should be further explained that the steering pump 1's shape is based on the gear-driven, large-displacement truck pump structure, meeting the reliability requirements under the corresponding pressure of large displacement. The front-end gear train drives the steering pump 1, meeting the engine layout requirements.

[0040] It should be further explained that the present invention solves the problem of having no spare space in the engine's gear train for a steering pump 1, forcing the large-displacement steering pump 1 to be installed only in the pulley system. A large-displacement steering pump 1, driven by the steering pump pulley 1.1, reduces overall engine modifications. The large-displacement steering pump 1 is replaced in the same location as the previous small-displacement steering pump 1, along with the corresponding steering pump mounting bracket 2 and steering pump support 3. This eliminates the need to modify the gear and pulley system layout, reducing R&D complexity and lowering the costs associated with these changes.

[0041] It should be further explained that the belt 4 drives the steering pump 1 to provide power-assisting hydraulic oil for the entire vehicle; the center coordinates of the large-displacement steering pump 1 for sanitation vehicles and the small-displacement steering pump 1 for ordinary vehicles in the wheel system are not much different. The hydraulic oil tank of the entire vehicle can be installed without changing the installation position as the vehicle model changes, and the inlet and return oil pipelines do not need to be rearranged in the entire vehicle. The use of the steering pump support 2 can make the steering pump mounting bracket 2 less modified, but it can still ensure the installation reliability of the large-displacement steering pump 1. The steering pump 1 has a larger appearance, which meets the flow requirements; the steering pump pulley 1.1 drive meets the wheel system requirements; the integrated metal pump body meets the reliability requirements, so that the large-displacement needs of sanitation vehicles can be met.

[0042] As shown in Table 1, in this specific embodiment, the data comparison of the large and small steering pumps 1 in the pulley system is as follows:

[0043] Table 1. Parameter data of large and small steering pumps 1 in the pulley system

[0044]

[0045]

[0046] like Figure 3 As shown in FIG. 1 , the input power curve of the large-displacement steering pump 1 in this specific embodiment.

[0047] like Figure 4 As shown in FIG. 1 , the input power curve of the small-displacement steering pump 1 in this specific embodiment is shown.

[0048] It should be further explained that the large-displacement steering pump 1 of the present invention can still be placed in the front gear train and driven by a belt while meeting the displacement and pressure requirements. This steering pump 1 is modified from a large-displacement gear-driven steering pump, originally a truck-driven pump. This pump retains the stable structure of the large truck pump and installs a pulley flange and pulley on the drive end.

[0049] It should be noted that the belt 4 can effectively transmit power from the crankshaft to the steering pump pulley 1.1, and can also be easily installed and prevent failure of related components.

[0050] In this specific embodiment, the belt 4 is of model 8pk.

[0051] It should be noted that the steering pump mounting bracket 2 provides mounting support and fixation for the steering pump 1 , while also ensuring the alignment of the belt 4 .

[0052] It should be noted that a steering pump support 3 for supporting the steering pump 1 is provided between the steering pump mounting bracket 2 and the steering pump 1; one end of the steering pump support 3 is bolted to the steering pump mounting bracket 2 through the fourth mounting bolt 9, and the other end is bolted to the second mounting through hole 1.4 on the steering pump 1 through the first mounting bolt 5 and the mounting nut 6.

[0053] It should be further explained that the steering pump mounting bracket 2 provides a mounting position for the steering pump 1 and the steering pump support 3 .

[0054] It should be further explained that the steering pump support 3 makes the steering pump 1 more reliably installed.

[0055] It should be further explained that when this invention is applied to a diesel engine, the front-end gear train layout of the engine is compact, and the components of the steering pump gear train must be highly integrated and meet layout and installation requirements. To meet the requirements for adding the steering pump gear train and to ensure sufficient installation space for the steering pump 1, a second mounting hole 1.4 must be reserved on the steering pump mounting bracket 2 for connecting the steering pump 1 to the steering pump mounting bracket 2.

[0056] It should be further explained that the steering pump mounting bracket 2 has the function of providing support and fixation for the steering pump 1; and a steering pump support 3 is added to the steering pump mounting bracket 2, so that the three mounting holes of the steering pump 1 can be fixed with bolts within a limited space. This structure makes the overall installation more compact, makes the installation more reliable in a limited space, reduces the product volume, and increases the stability of the engine.

[0057] In this specific embodiment, the model of the first mounting bolt 5 is M8X1.25; the model of the mounting nut 6 is M8X1.25.

[0058] In this specific embodiment, the number of the second mounting bolts 7 is 2; the model of the second mounting bolts 7 is M10X1.5.

[0059] In this specific embodiment, the number of the third mounting bolts 8 is 2; the model of the third mounting bolts 8 is M10X1.5.

[0060] In this specific embodiment, the number of the fourth mounting bolt 9 is one; the model of the fourth mounting bolt 9 is M8X1.25.

[0061] In this specific embodiment, the number of the fifth mounting bolts 10 is 2; the model of the fifth mounting bolts 10 is M8X1.25.

[0062] It should be noted that the utility model meets the requirements of the steering system of the sanitation vehicle with a simple and reliable installation structure.

[0063] In the foregoing detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that embodiments of the claimed subject matter require more features than are expressly recited in each claim. On the contrary, as reflected in the appended claims, the invention comprises less than all the features of any individual disclosed embodiment. The appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0064] The above description of the disclosed embodiments is intended to enable any person skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments presented herein but is intended to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0065] The foregoing description includes examples of one or more embodiments. Of course, it is not possible to describe all possible combinations of components or methods for the purposes of describing the above embodiments, but one of ordinary skill in the art will recognize that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to encompass all such changes, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent the term "comprising" is used in the specification or claims, the term is intended to be encompassed in a manner similar to the term "including," as explained in terms of "including," used as a transitional word in the claims. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or."

[0066] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A belt-driven steering pump gear train device, characterized in that: It comprises a steering pump (1), a steering pump mounting bracket (2), a belt (4), a first mounting bolt (5), a mounting nut (6), a second mounting bolt (7), a third mounting bolt (8), a fourth mounting bolt (9), and a fifth mounting bolt (10), wherein: The steering pump (1) comprises a steering pump pulley (1.1) and a steering pump body (1.2); The steering pump mounting bracket (2) comprises a steering pump mounting platform (2.1) and an engine mounting platform (2.2); the structure of the connection side of the steering pump mounting platform (2.1) and the steering pump (1) matches the profile of the steering pump body (1.2); the fifth mounting bolt (10) passes through the first mounting through hole (1.3) on the steering pump (1) and is bolted to the steering pump mounting bracket (2); The second mounting bolt (7) passes through the third mounting through hole (2.2.1) on the engine mounting platform (2.2), and the third mounting bolt (8) passes through the fourth mounting through hole (2.2.2) on the engine mounting platform (2.2), and then the engine mounting platform (2.2) is bolted to the engine cylinder block; The belt (4) is respectively sleeve-connected to the steering pump pulley (1.1) and the engine crankshaft.

2. The belt-driven steering pump gear train device according to claim 1, characterized in that: A steering pump support member (3) for supporting the steering pump (1) is provided between the steering pump mounting bracket (2) and the steering pump (1); one end of the steering pump support member (3) is bolted to the steering pump mounting bracket (2) via the fourth mounting bolt (9), and the other end is bolted to the second mounting through hole (1.4) on the steering pump (1) via the first mounting bolt (5) and the mounting nut (6).

3. The belt-driven steering pump gear train device according to claim 2, characterized in that: The model of the belt (4) is 8pk.

4. The belt-driven steering pump gear train device according to claim 3, characterized in that: The displacement of the steering pump (1) is 18 ml / r, the pressure is 15.7 MPa, and the flow rate range is 15 L / min-17 L / min.

5. The belt-driven steering pump gear train device according to claim 4, characterized in that: The model of the first mounting bolt (5) is M8X1.25; the model of the mounting nut (6) is M8X1.

25.

6. The belt-driven steering pump gear train device according to claim 5, characterized in that: The number of the second mounting bolts (7) is 2; the model of the second mounting bolts (7) is M10X1.

5.

7. The belt-driven steering pump gear train device according to claim 6, characterized in that: The number of the third mounting bolts (8) is 2; the model of the third mounting bolts (8) is M10X1.

5.

8. The belt-driven steering pump gear train device according to claim 7, characterized in that: The number of the fourth mounting bolt (9) is 1; the model of the fourth mounting bolt (9) is M8X1.

25.

9. The belt-driven steering pump gear train device according to claim 8, characterized in that: The number of the fifth mounting bolts (10) is 2; the model of the fifth mounting bolts (10) is M8X1.25.

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