Full-active suspension gear pump crescent plate structure for vehicle chassis
By introducing intermediate and end bosses for limiting the crescent plate structure, and combining them with spring clips and sealing rods for support, the problems of inaccurate positioning and easy scratching of parts in the crescent plate structure are solved, achieving higher positioning accuracy and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-15
- Publication Date
- 2026-04-10
AI Technical Summary
In the gear pumps of existing fully active suspension systems, the main and auxiliary plates of the crescent plate structure are floating, resulting in large swing amplitudes, making precise control difficult, and the parts are prone to scratching each other, affecting service life.
A crescent plate structure is designed, which uses a middle boss and end bosses to limit the crescent sub-plate, reducing the contact between the pin and the crescent sub-plate. The crescent main plate and sub-plate are supported by springs and sealing rods to ensure positioning accuracy and reduce the swing amplitude.
It improves the precision of motor control, reduces wear between parts, extends service life, and ensures the reliability and stability of assembly relationships.
Smart Images
Figure CN224107409U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to gear pump technical field, concretely relates to a crescent plate structure for full active suspension gear pump of vehicle chassis. BACKGROUND
[0002] At present, the electric pump for full active suspension system in domestic is bidirectional internal meshing gear structure. In order to keep the stability of operation under different road conditions, the hydraulic pump needs to switch the forward and reverse directions continuously to provide different pressure hydraulic oil for the upper and lower chambers of shock absorber. Because the high and low cavity structure in the hydraulic pump is symmetrical, the oil flow of forward and reverse output is consistent under the same speed.
[0003] Because the internal meshing gear pump rotates bidirectionally when working, the oil inlet and outlet work alternately, and two crescent sub-plates are arranged in the same plane and positioned by pin, and the pin and the crescent main plate and sub-plate are floating positioning structure. When the pump works alternately in forward and reverse directions, the main plate and the sub-plate swing greatly, and the difference between the forward and reverse flow and pressure is large under the same working condition, which brings inconvenience to the precise control of motor, and when assembling, the pin contacts the crescent main plate and sub-plate at the same time, which causes mutual scratching between parts and affects the service life due to wear. SUMMARY
[0004] In view of the deficiencies in the prior art, the utility model aims at providing a crescent plate structure for full active suspension gear pump of vehicle chassis, which solves the technical problems that the main plate, sub-plate and pin are floating positioning in the current crescent plate structure, the main plate and sub-plate swing greatly and are inconvenient to control precisely, and the pin and the main plate and sub-plate contact at the same time and are easy to scratch each other and affect the service life.
[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a crescent plate structure for full active suspension gear pump of vehicle chassis, the crescent plate structure comprises a gear ring, a gear, a crescent main plate, a crescent sub-plate and a pin, the gear is eccentrically engaged in the gear ring, the crescent main plate and the crescent sub-plate are arranged in the gap between the gear ring and the gear, the middle of the arc-shaped crescent main plate is provided with a middle boss which protrudes outward, and the two ends of the outer circumferential surface of the crescent main plate are provided with end bosses which protrude outward; the arc-shaped crescent sub-plate is provided with two, which are arranged on the two sides of the middle boss and are limited by the end bosses; the first groove body is arranged between the central boss and the end boss on the outer circumferential surface of the crescent main plate, and the first groove body is provided with a spring piece and a sealing rod.
[0006] Preferably, the middle boss position of the crescent main plate is provided with a concave positioning groove on the front and rear sides, which is used for cooperating with the pin.
[0007] Preferably, the positioning groove is trapezoidal, and the narrower end is close to the central axis position of the gear ring.
[0008] Preferably, the first groove adopts a V shape, and the spring sheet is arranged at one side of the V-shaped groove close to the corresponding end of the crescent main plate.
[0009] Preferably, a second groove is arranged at one side of the outer circumferential surface of the crescent main plate away from the middle boss, and only spring sheets are arranged in the second groove.
[0010] Preferably, the second groove adopts a square groove, and the spring sheet is arranged at the bottom of the square groove and used for supporting the crescent auxiliary plate.
[0011] Preferably, the spring sheet and the spring sheet both adopt an arc-shaped spring sheet.
[0012] The technical scheme of the utility model has the beneficial effects that:
[0013] The utility model discloses a crescent auxiliary plate is limited through the middle boss and the end boss of the setting on the crescent main plate body, and the assembly relationship is reliable and reasonable, compared with the floating positioning of the end boss on the traditional sense of the pin plus crescent main plate, reduces a positioning part, and the positioning precision is high, and the swing amplitude of the crescent main plate and the crescent auxiliary plate in the working process is also reduced, and the motor control precision is guaranteed. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is an embodiment schematic view of a crescent plate structure for a full active suspension gear pump of a vehicle chassis.
[0015] Figure 2 It is an embodiment explosion view of a crescent plate structure for a full active suspension gear pump of a vehicle chassis.
[0016] Figure 3 It is a crescent main plate schematic view.
[0017] Figure 4 It is a crescent main plate and crescent auxiliary plate assembly schematic view.
[0018] Among them, Figures 1-4 In the figure, 1-tooth ring, 2-gear, 3-crescent main plate, 31-middle boss, 32-end boss, 33-positioning groove, 34-first groove, 35-second groove, 4-arc spring sheet, 5-sealing rod, 6-pin, 7-crescent auxiliary plate. DETAILED DESCRIPTION
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments, and do not limit the scope of the present utility model.
[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] The specific implementation method is as follows:
[0023] like Figures 1-4 As shown, a crescent plate structure for a gear pump in a fully active suspension system of a vehicle chassis is disclosed. This crescent plate structure includes a gear ring 1, a gear 2, a crescent main plate 3, a crescent secondary plate 7, a pin 6, a spring, and a sealing rod 5. The gear 2 is eccentrically engaged within the gear ring 1. The crescent main plate 3 and the crescent secondary plate 7 are disposed within the gap between the gear ring 1 and the gear 2, with the crescent main plate 3 close to the gear 2 and the crescent secondary plate 7 close to the gear ring 1.
[0024] The crescent-shaped main board 3 is arc-shaped and has an axially symmetrical structure. A central boss 31 protrudes outward from the middle of the outer periphery of the crescent-shaped main board 3. End bosses 32 are located at both ends of the outer periphery of the crescent-shaped main board 3. The central boss 31 divides the space between the two end bosses 32 into two identical spaces. Two crescent-shaped secondary boards 7 are also arc-shaped. Each of the two secondary boards 7 is positioned within one of the two spaces divided by the central boss 31, and both ends of the secondary boards 7 are limited by the central boss 31 and the end bosses 32.
[0025] In the embodiment, the two sides of the middle position of the crescent main plate 3 are connected with the pump body through the pin 6, and the two ends of the crescent auxiliary plate 7 are limited by the boss arranged on the body of the crescent main plate 3, but not by the pin 6, and the pin 6 does not contact with the crescent auxiliary plate 7, thereby reducing the mutual scratching between the parts and prolonging the service life.
[0026] The first groove body 34 is arranged between the middle boss 31 and the end boss 32 on the outer circumferential surface of the crescent main plate 3, and the elastic sheet and the sealing rod 5 are arranged in the first groove body 34. Under the support of the elastic sheet and the sealing rod 5, the crescent main plate 3 and the crescent auxiliary plate 7 are pushed to the two sides.
[0027] In the embodiment, the two sides of the middle position of the crescent main plate 3 are connected with the pump body through the pin 6, and the two ends of the crescent auxiliary plate 7 are limited by the boss arranged on the body of the crescent main plate 3, but not by the pin 6, and the pin 6 does not contact with the crescent auxiliary plate 7, thereby reducing the mutual scratching between the parts and prolonging the service life.
[0028] Further, the position where the middle boss 31 of the two sides of the crescent main plate 3 is located is provided with a concave positioning groove 33. The end of the pin 6 is provided with a overhanging part matched with the positioning groove 33, and the overhanging part is embedded in the positioning groove 33, thereby realizing the positioning connection of the crescent main plate 3 and the pump body.
[0029] More specifically, the positioning groove 33 is in the shape of an isosceles trapezoid. The narrower end of the trapezoidal groove is close to the position of the central shaft of the gear ring 1. When the overhanging part of the pin 6 is connected to the positioning groove 33, the overhanging part is provided with a avoiding part on the left and right sides of the position of the middle boss 31, that is, the left and right sides of the overhanging part do not protrude from the middle boss 31, so that the pin 6 does not contact with the crescent auxiliary plate 7, thereby reducing the possibility of scratching.
[0030] Further, the first groove body 34 adopts a V-shaped groove, and the elastic sheet is arranged in the V-shaped groove close to the side of the corresponding end of the crescent main plate 3, thereby supporting the sealing rod 5.
[0031] Further, the second groove 35 is arranged between the middle boss 31 and the end boss 32 of the outer circumferential surface of the crescent main plate 3, and the second groove 35 is located on the side of the first groove 34 away from the middle boss 31, and only the spring sheet is arranged in the second groove 35. The two second grooves 35 are symmetrically arranged. After assembly, the two crescent sub-plates 7 are supported by the two spring sheets, and the two spring sheets simultaneously act on the crescent sub-plate 7 when the gear pump is in low pressure operation, so that the spring sheet is distributed reasonably and scientifically, and the stress is balanced.
[0032] Further, the second groove 35 adopts a square groove, and the spring sheet is arranged on the smooth bottom of the square groove, so as to ensure the stability when supporting the crescent sub-plate 7.
[0033] Further, the spring sheet in the first groove 34 and the spring sheet in the second groove 35 are both arc-shaped spring sheets, which have supporting effect and good resilience.
[0034] The utility model is described above in combination with the drawings, and obviously, the specific implementation of the utility model is not limited by the above mode, as long as various non-substantial improvements are made by adopting the technical scheme of the utility model, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, all of which are within the protection scope of the utility model.
Claims
1. A crescent plate structure for a full active suspension gear pump of a vehicle chassis, the crescent plate structure comprising a gear ring, a gear, a main crescent plate, a sub-crescent plate, and a pin, the gear being eccentrically engaged in the gear ring, the main crescent plate and the sub-crescent plate being disposed in a gap between the gear ring and the gear, characterized in that, The middle of the arc-shaped crescent main plate is provided with a middle boss which protrudes outward, and the two ends of the outer circumferential surface of the crescent main plate are provided with end bosses which protrude outward; the arc-shaped crescent sub-plates are provided with two, which are respectively arranged on the two sides of the middle boss and are limited by the end bosses; the first groove is arranged between the middle boss and the end boss on the outer circumferential surface of the crescent main plate, and the first groove is provided with a spring sheet and a sealing rod.
2. The crescent plate structure for a full active suspension gear pump of a vehicle chassis according to claim 1, characterized in that, The front and rear sides of the middle boss on the crescent main plate are provided with concave positioning grooves for cooperating with the pin.
3. The crescent plate structure for a full active suspension gear pump of a vehicle chassis according to claim 2, characterized in that, The positioning groove is trapezoidal, and the narrower end is close to the center axis position of the gear ring.
4. The crescent plate structure for a full active suspension gear pump of a vehicle chassis according to claim 1, characterized in that, The first groove is V-shaped, and the spring sheet is arranged on one side of the V-shaped groove close to the corresponding end of the crescent main plate.
5. The crescent plate structure for a full active suspension gear pump of a vehicle chassis according to claim 1, characterized in that, The outer circumferential surface of the crescent main plate is provided with a second groove on the side away from the middle boss, and only a spring sheet is arranged in the second groove.
6. The crescent plate structure for a full active suspension gear pump of a vehicle chassis according to claim 5, characterized in that, The second groove is a square groove, and the spring sheet is arranged at the bottom of the square groove for supporting the crescent sub-plate.
7. The crescent plate structure for a full active suspension gear pump of a vehicle chassis according to claim 6, characterized in that, The spring sheet and the spring sheet are both arc-shaped spring sheets.