Novel swing seat structure

Abstract

The utility model discloses a novel swing seat structure, which relates to the technical field of hydraulic parts and is characterized in that the novel swing seat structure comprises a swing seat and a swing, the swing seat is provided with a swing cambered surface matched with the swing, the swing cambered surface is provided with a perforated bearing bush, and the outer side of the bearing bush is matched with the swing; the swing seat is provided with a pin hole, a positioning pin is inserted into the pin hole, and the corresponding end of the positioning pin penetrates out of the pin hole and is inserted into the bearing bush. According to the novel swing seat structure, the replacement difficulty of the bearing bush is reduced through matched connection of the positioning pin and the bearing bush, the repair and maintenance efficiency of the novel swing seat structure is remarkably improved, and the purpose of prolonging the service life is achieved while the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic components, and more specifically to a novel swing seat structure. Background Art

[0002] The rocking seat provides support for the rocking and guides the rotation in the operating variables of the pump to cause the displacement of the hydraulic pump to change during operation.

[0003] Due to the reaction force of the cylinder spring, when the swing is fixed on the swing seat and swings on the swing seat arc surface, it is subjected to a large force and generates friction. In order to avoid friction damage, it is optimized by reducing friction or improving wear resistance.

[0004] In the prior art, two types of rocking seat structures are generally used. Figure 1 As shown, this is the first type of rocking seat structure in the prior art. It uses a method of directly punching a curved surface on the rocking curved surface, and then punching a side hole from the side to connect with the curved surface, so that the curved surface and the side hole are connected to the housing cavity. During the operation of the pump, the rocking curved surface is lubricated by oil discharge to reduce the wear between the rocking and the curved surface of the rocking seat. Figure 2 As shown, this is the second rocking seat structure in the prior art, which uses screw holes to be punched on the arc surface of the rocking seat to fix the bearing on the rocking arc surface with bearing screws.

[0005] However, the first rocking seat structure has high requirements for the roughness of the rocking seat arc surface. Since the rocking and rocking seat are generally made of iron, they are prone to wear and have a short service life. After wear occurs, the rocking and rocking seat need to be repaired or replaced, which leads to high maintenance costs. Although the friction coefficient of the bearing is low in the second rocking seat structure, it is difficult to lubricate it with lubricating oil, so the problem of easy wear still exists. In addition, when replacing the bearing, the thread glue that matches the bearing screw is generally used, which significantly increases the difficulty of stripping the bearing, thereby affecting the efficiency of repair and maintenance, and needs to be improved. Summary of the Invention

[0006] In view of this, the purpose of this application is to provide a new swing seat structure to achieve the purpose of effective lubrication, reduce wear and reduce maintenance difficulty. The specific solution is as follows:

[0007] A new type of rocking seat structure includes a rocking seat and a rocking member. The rocking seat is provided with a rocking arc surface that matches the rocking member. The rocking arc surface is provided with an open-hole bearing shell. The outer side of the bearing shell matches the rocking member. The rocking seat is provided with a pin hole. The pin hole is plugged with a positioning pin. The corresponding end of the positioning pin passes through the pin hole and is inserted into the bearing shell.

[0008] Preferably, a hole is opened at the axis of the positioning pin.

[0009] Preferably, the rocking seat is provided with a through hole communicating with the pin hole.

[0010] Preferably, the axis of the through hole intersects with the axis of the pin hole and forms an obtuse angle with the opening facing downward, and the opening of the pin hole is inclined downward.

[0011] Preferably, the inner diameter of the through hole is smaller than the inner diameter of the pin hole.

[0012] Preferably, the diameter of the positioning pin is larger than the inner diameter of the pin hole and is interference-connected.

[0013] From the above scheme, it can be seen that the present application provides a new type of rocking seat structure, which has the following beneficial effects: the difficulty of replacing the bearing is reduced by matching the positioning pin with the bearing, and the repair and maintenance efficiency of the new rocking seat structure is significantly improved, thereby reducing costs while achieving the purpose of extending service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the first swing seat structure in the prior art;

[0015] Figure 2 It is a structural diagram of the second swing seat structure in the prior art;

[0016] Figure 3 This is a schematic structural diagram of the novel swing seat structure of this embodiment;

[0017] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure along the AA direction.

[0018] Explanation of the accompanying reference numerals: 1. rocking seat; 11. rocking arc surface; 12. arc hole; 13. side hole; 14. screw hole; 15. pin hole; 16. through hole; 2. rocking; 3. bearing; 4. positioning pin. DETAILED DESCRIPTION

[0019] To make the technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0020] like Figure 1As shown, a conventional rocking seat structure includes a rocking seat 1 and a rocking member 2. A rocking arc surface 11 is provided on the inner side of the rocking seat 1. The rocking seat 1 is provided with an arcuate hole 12 on one side of the rocking arc surface 11, and a side hole 13 is provided on the upper side thereof, communicating with the arcuate hole 12. The arcuate hole 12 and the side hole 13 are combined to communicate with the housing cavity. During pump operation, oil is discharged to lubricate the rocking arc surface 11, thereby reducing wear between the rocking member 2 and the arc surface of the rocking seat 1.

[0021] like Figure 2 As shown, another existing rocking seat structure has screw holes 14 on the arc surface of the rocking seat 1 to fix the bearing 3 on the rocking arc surface 11 with the bearing 3 screws, and then reduce wear by the contact between the bearing 3 and the rocking 2.

[0022] like Figure 3 、 Figure 4 As shown, a novel rocking seat structure comprises a rocking seat 1 and a rocking member 2. A rocking arc surface 11 is provided on the inner side of rocking seat 1 to mate with rocking member 2, and a bearing shell 3 with a hole is mounted on rocking arc surface 11. It is important to note that the outer side of bearing shell 3 mates with rocking member 2, and rocking seat 1 is provided with a pin hole 15. A locating pin 4 is inserted into pin hole 15, with one end of locating pin 4 protruding from pin hole 15 and inserted into bearing shell 3.

[0023] In the embodiment of the present application, the depth of the positioning pin 4 inserted into the rocker 2 is less than the thickness of the rocker 2. A hole is formed at the axis of the positioning pin 4. The positioning pin 4 with the hole at the axis is connected to a fastener such as a bolt by tapping. The positioning pin 4 can then be removed by simply removing the connecting bolt, significantly reducing the difficulty of repairing and maintaining the positioning pin 4 and the rocker 2.

[0024] It's worth noting that the rocker seat 1 is provided with a through-hole 16 that communicates with the pin hole 15. The axis of through-hole 16 intersects with the axis of the pin hole 15, forming an obtuse angle with the opening facing downward. Furthermore, the opening of the pin hole 15 is tilted downward. Therefore, by adding lubricating oil to through-hole 16, the lubricating oil can flow through the pin hole 15 and into the side surface of the bearing shell 3 of the rocker seat 1, achieving effective lubrication.

[0025] like Figure 3 、 Figure 4 As shown, the inner diameter of through-hole 16 is smaller than that of pin hole 15, thereby improving the mating stability of locating pin 4 and pin hole 15. Furthermore, the diameter of locating pin 4 is larger than the inner diameter of pin hole 15, creating an interference fit. This significantly reduces the difficulty of mating locating pin 4 and pin hole 15, improving the fixing accuracy of locating pin 4.

[0026] In summary, the present application provides a new rocking seat structure, which is matched and connected with the bearing 3 through the positioning pin 4, thereby reducing the difficulty of replacing the bearing 3 and significantly improving the repair and maintenance efficiency of the new rocking seat structure, thereby achieving the purpose of extending the service life while reducing costs.

[0027] References to "first," "second," "third," "fourth," and the like (if any) herein are intended to distinguish similar objects and are not necessarily intended to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions, e.g., a process, method, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, or apparatus.

[0028] It should be noted that the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0029] This document uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A novel swing seat structure, comprising a swing seat (1) and a swing (2), wherein the swing seat (1) is provided with a swing arc surface (11) matching the swing (2), and is characterized in that: The rocking arc surface (11) is provided with an open-hole bearing shell (3), and the outer side of the bearing shell (3) matches the rocking (2); the rocking seat (1) is provided with a pin hole (15), and the pin hole (15) is plugged with a positioning pin (4), and the corresponding end of the positioning pin (4) passes through the pin hole (15) and is inserted into the bearing shell (3); the axis of the positioning pin (4) is opened, and the rocking seat (1) is provided with a through hole (16) connected to the pin hole (15), the axis of the through hole (16) intersects with the axis of the pin hole (15) and forms an obtuse angle with the opening facing downward, and the opening of the pin hole (15) is inclined downward.

2. A novel swing seat structure according to claim 1, characterized in that: The inner diameter of the through hole (16) is smaller than the inner diameter of the pin hole (15).

3. A novel swing seat structure according to claim 1, characterized in that: The diameter of the positioning pin (4) is larger than the inner diameter of the pin hole (15) and is interference-connected.

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