Hydraulic vehicle body suspension

Abstract

A hydraulic vehicle body suspension comprises an elastic assembly and a hydraulic assembly which are assembled on a vehicle frame, the hydraulic assembly is of a structure formed by assembling a first vulcanized body, a second vulcanized body, a third vulcanized body, an outer pipe and a fourth vulcanized body, and after the first vulcanized body, the second vulcanized body and the third vulcanized body are surrounded by the outer pipe to form an internal overall structure, the first vulcanized body and the fourth vulcanized body are fixed through the outer pipe. Then assembling the second vulcanization body and a fourth vulcanization body into a hydraulic assembly; an upper hydraulic cavity is formed between the first vulcanization body and the second vulcanization body, a lower hydraulic cavity is formed between the second vulcanization body and the third vulcanization body, and a decoupling film is arranged in the second vulcanization body to separate the upper hydraulic cavity from the lower hydraulic cavity. According to the invention, the decoupling film is arranged in the second vulcanization body, and the decoupling film can be deformed to adjust the size of the hydraulic cavity when being subjected to a large impact force, so that the influence caused by the impact is relieved, a better vibration reduction effect is provided, and better dynamic performance is achieved.

Description

Technical Field

[0001] The invention relates to a vehicle body suspension, in particular to a hydraulic vehicle body suspension. Background Art

[0002] The body suspension is a device used to connect the body and the frame to reduce the vibration of the body and improve the comfort of the ride. The current structure of the hydraulic body suspension is generally divided into two parts, the upper and lower parts, as shown in the invention application with application number 202011158351.7 and the name "A composite hydraulic damping device and body suspension", and the invention application with application number 202110901999.7 and the name "Body suspension". The upper part is mainly used to meet the requirements of axial static stiffness, and the lower part is mainly used to meet the requirements of axial dynamic stiffness. However, the structure of the lower part of the above-mentioned body suspension has a large change in dynamic stiffness under composite frequency excitation, and thus has limited isolation from vibration. Summary of the invention

[0003] In view of the problem that the dynamic stiffness of the current vehicle body suspension changes too much under compound frequency excitation, the present invention proposes a hydraulic vehicle body suspension, which can ensure that a more stable vibration isolation effect can be provided under compound frequency excitation, thereby performing better in dynamic performance.

[0004] The technical means adopted by the present invention to solve the above problems are: a hydraulic vehicle body suspension, comprising an elastic component and a hydraulic component respectively assembled on a vehicle frame, wherein the hydraulic component is a structure assembled by a first vulcanized body, a second vulcanized body, a third vulcanized body, an outer tube and a fourth vulcanized body, the outer tube first surrounds the first vulcanized body, the second vulcanized body and the third vulcanized body into an internal integral structure, and then assembles with the fourth vulcanized body into a hydraulic component; and an upper hydraulic cavity is formed between the first vulcanized body and the second vulcanized body, and a lower hydraulic cavity is formed between the second vulcanized body and the third vulcanized body, and a decoupling membrane is provided inside the second vulcanized body to separate the upper hydraulic cavity from the lower hydraulic cavity. The provision of the decoupling membrane enables the vehicle body suspension to have a better vibration isolation effect.

[0005] Furthermore, the second vulcanized body includes a second mandrel and a flow channel body, the rubber body vulcanizes the second mandrel and the flow channel body into a whole, and the flow channel is arranged on the outer side of the flow channel body, so as to facilitate the adjustment of the flow channel length.

[0006] Furthermore, the flow channel body includes an inner shell and an outer shell, which form two rings, and the height of the inner shell is less than the height of the outer shell, the flow channel is arranged on the outer surface of the outer shell, and a flow channel hole penetrating the outer shell is arranged at the end of the flow channel, the rubber body is vulcanized between the inner shell and the second mandrel, and the decoupling membrane is arranged between the inner shell and the outer shell. The rubber body and the decoupling membrane cooperate to separate the space between the flow channel body and the second mandrel into an upper hydraulic chamber and a lower hydraulic chamber, and the inner shell is arranged to have a small height, so that the upper hydraulic chamber or the lower hydraulic chamber between the second mandrel and the outer shell can form a connected whole.

[0007] Furthermore, the inner surface of the outer shell and the outer surface of the inner shell are both provided with a circle of grooves concave downwards; accordingly, the decoupling membrane is annular with an inner ring and an outer ring, and the lower edges of the inner ring and the outer ring are both provided with lower convex rings protruding downwards, the lower convex ring of the inner ring is inserted into the groove of the inner shell, and the lower convex ring of the outer ring is inserted into the groove of the outer shell. The decoupling membrane is assembled between the outer shell and the inner shell by the cooperation of the lower convex ring and the groove.

[0008] Furthermore, the height of the groove at the outer shell of the flow channel body is smaller than the height of the groove at the inner shell, a bell-mouth shape is formed between the inner and outer rings of the decoupling membrane, and a plurality of connecting blocks are evenly arranged along the annular direction between the outer side wall of the outer shell groove and the outer side wall of the inner shell groove, and a gap exists between the connecting block and the decoupling membrane in a free state after the decoupling membrane is assembled to the flow channel body. When the decoupling membrane is deformed and contacts the connecting block, the connecting block can provide support for the decoupling membrane while connecting the outer shell and the inner shell into a whole.

[0009] Furthermore, a pressing frame installed above the decoupling membrane is provided between the outer shell and the inner shell, and the pressing frame includes an inner pressing ring, an outer pressing ring, and connecting ribs connecting the inner pressing ring and the outer pressing ring into a whole, and an annular pressing groove is provided at the lower end surface of the inner side of the inner pressing ring and the lower end surface of the outer side of the outer pressing ring; accordingly, an upper convex ring protruding upward is provided at the upper edge of the inner ring and the outer ring of the decoupling membrane, and the pressing groove of the inner pressing ring presses the upper convex ring of the inner ring, and the pressing groove of the outer pressing ring presses the upper convex ring of the outer ring. The pressing frame fixes the decoupling membrane between the outer shell and the inner shell.

[0010] Furthermore, a second notch communicating with the flow channel hole is provided at the upper edge of the outer pressure ring of the pressure frame.

[0011] Furthermore, a second positioning block protruding outward is provided at the upper edge of the outer pressure ring of the pressure frame; correspondingly, a positioning hole is provided at the upper edge of the outer shell of the flow channel body; when the second notch is connected to the flow channel hole, the second positioning block extends into the positioning hole. The second notch and the flow channel hole are positioned by the cooperation of the second positioning block and the positioning hole.

[0012] Further, the first vulcanized body includes a first mandrel and a first outer sleeve, and the rubber body vulcanizes the first mandrel and the first outer sleeve into a whole, the first vulcanized body is assembled above the press frame, and the lower edge of the rubber body of the first vulcanized body is provided with a first notch and a first positioning block protruding outward, and when the first notch is connected to the flow channel hole, the first positioning block extends into the positioning hole. The first notch and the flow channel hole are positioned by the first positioning block cooperating with the positioning hole.

[0013] Furthermore, the third vulcanized body includes a third mandrel and a third outer sleeve vulcanized into a whole by rubber, and the outer wall of the third mandrel is provided with two circles of steps, the second mandrel sleeve of the second vulcanized body is placed on the lower rear end of the third mandrel to support the lower step, and the first mandrel sleeve of the first vulcanized body is placed on the lower rear end of the third mandrel to support the upper step. The first vulcanized body, the second vulcanized body and the third vulcanized body are formed into a whole by the support of the third mandrel.

[0014] The beneficial effects of the present invention are: 1. The present invention isolates the upper hydraulic chamber from the lower hydraulic chamber by arranging a decoupling membrane in the second vulcanized body. When the hydraulic chamber is subjected to a large impact force, the decoupling membrane can be deformed to adjust the size of the hydraulic chamber, thereby mitigating the impact of the impact, providing a better vibration reduction effect, and thus having better dynamic performance.

[0015] 2. The present invention arranges the flow channel on the outer side of the flow channel body, so that the position of the flow channel hole can be selected as needed, thereby being able to flexibly adjust the overall length of the flow channel.

[0016] 3. The present invention designs the flow channel body into a structure of an outer shell and an inner shell connected by a connecting block, so that an installation space for the decoupling membrane is formed between the outer shell and the inner shell. The connecting block can not only connect the outer shell and the inner shell into a whole, but also provide support for the decoupling membrane, which does not affect the deformation of the decoupling membrane under a large impact, but also avoids the risk of excessive deformation of the decoupling membrane or even falling off from between the outer shell and the inner shell, thereby ensuring that the decoupling membrane can function efficiently.

[0017] 4. The present invention stably positions the decoupling membrane between the inner shell and the outer shell through the cooperation between the lower convex ring and the groove, and the cooperation between the upper convex ring and the pressure groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the vehicle body suspension in Example 1; Figure 2 for Figure 1 Schematic cross-sectional view; Figure 3 This is a schematic diagram of the structure of the elastic component of Embodiment 1; Figure 4 This is a schematic diagram of the structure of the hydraulic assembly of Example 1; Figure 5 for Figure 4 Schematic cross-sectional view; Figure 6 for Figure 4 Schematic diagram of the structure after removing the fourth sulfide; Figure 7 for Figure 6 Schematic diagram of the structure after removing the outer tube; Figure 8 This is a schematic diagram of the structure of the first sulfide body of Example 1; Fig. 9 for Figure 8 Another angle structural diagram; Fig.10 for Figure 8 Schematic cross-sectional view; Fig.11 for Figure 7 Schematic diagram of the structure after removing the first sulfide body; Fig.12 for Fig.11 Schematic cross-sectional view; Fig.13 This is a schematic diagram of the press frame structure of Example 1; Fig.14 for Fig.13 Schematic cross-sectional view; Fig.15 This is a schematic diagram of the decoupling membrane structure of Example 1; Fig.16 for Fig.15 Schematic cross-sectional view; Fig.17 This is a schematic diagram of the structure of the second sulfide body of Example 1; Fig.18 for Fig.17 Schematic cross-sectional view; Fig.19 This is a schematic diagram of the flow channel structure of Example 1; Fig. 20 for Fig.19 Schematic cross-sectional view; Fig.21 This is a schematic diagram of the structure of the third sulfide body of Example 1; Fig. 22 for Fig.21 Schematic cross-sectional view; Fig.23 This is a schematic diagram of the structure of the fourth sulfide body of Example 1; Fig.24 for Fig.23 Schematic cross-sectional view; In the figure: 1. first vulcanized body, 11. first mandrel, 12. first outer sleeve, 13. first notch, 14. first positioning block, 2. second vulcanized body, 21. second mandrel, 22. flow channel body, 221. inner shell, 222. outer shell, 223. connecting block, 224. flow channel, 225. flow channel hole, 226. positioning hole, 227. groove, 23. upper hydraulic chamber, 24. lower hydraulic chamber, 3. third vulcanized body, 31. third mandrel, 32. third outer sleeve, 33. Leather cup, 34. Step, 4. Fourth vulcanized body, 41. Large outer jacket, 42. Reinforcing ribs, 5. Outer tube, 6. Elastic component, 61. Upper cover plate, 62. Lower cover plate, 63. Inner tube, 7. Decoupling membrane, 71. Inner ring, 72. Outer ring, 73. Upper convex ring, 74. Lower convex ring, 8. Press frame, 81. Inner pressure ring, 82. Outer pressure ring, 83. Connecting ribs, 84. Second notch, 85. Second positioning block, 86. Press groove, 9. Rubber body, 100. Frame. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings. The accompanying drawings are only for illustrative purposes and are only schematic diagrams, not actual pictures, and cannot be understood as limiting the present patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted. Embodiment 1

[0020] A hydraulic body suspension, such as Figure 1 and Figure 2 As shown, it includes an elastic component 6 installed above the frame 100 and a hydraulic component installed below the frame 100. Figure 2 and Figure 3 As shown, the elastic component 6 includes an upper cover plate 61, a lower cover plate 62 and an inner tube 63. After the rubber body 9 vulcanizes the upper cover plate 61, the lower cover plate 62 and the inner tube 63 into a whole, the entire elastic component 6 is installed on the upper surface of the frame 100 through the lower cover plate 62 to provide axial static stiffness.

[0021] like Figure 4-Figure 6 As shown, the hydraulic assembly includes a first vulcanized body 1, a second vulcanized body 2, a third vulcanized body 3, an outer tube 5 and a fourth vulcanized body 4. When assembled, Figure 4-Figure 7 As shown, the first vulcanized body 1, the second vulcanized body 2 and the third vulcanized body 3 are first assembled together and then pressed into the outer tube 5 to form a small whole, and then liquid is filled into the hydraulic chamber. Then, the entire small whole is pressed into the fourth vulcanized body 4 to form a hydraulic assembly, which is installed on the upper surface of the frame 100 as a whole to provide axial dynamic stiffness.

[0022] like Figure 8-Figure 10As shown, the first vulcanized body 1 includes a first core shaft 11 and a first outer sleeve 12 which are vulcanized into a whole by a rubber body 9. After installation, the first vulcanized body is located at the top of the hydraulic assembly, the upper end surface of the rubber body 9 is in contact with the frame 100, the upper end surface of the first core shaft 11 is in contact with the lower end surface of the inner tube 63 of the elastic assembly 6, and the lower end surface of the rubber body 9 is inside the upper hydraulic chamber 23.

[0023] like Fig.17 and Fig.18 As shown, the second vulcanized body 2 includes a second mandrel 21 and a flow channel body 22 formed by vulcanizing a rubber body 9. Fig.19 and Fig. 20 As shown, the flow channel body 22 includes an inner shell 221 and an outer shell 222, forming two inner and outer rings, and the inner shell 221 and the outer shell 222 are connected by a plurality of evenly arranged connecting blocks 223, so that the inner shell 221 and the outer shell 222 form a whole. Fig.18 Therefore, the rubber body 9 is vulcanized between the second mandrel 21 and the inner shell 221, dividing the space between the second mandrel 21 and the inner shell 221 into an upper part and a lower part. Fig.11 and Fig.12 As shown, a decoupling membrane 7 is provided at a position above the connecting block 223 between the inner shell 221 and the outer shell 222, and a pressing frame 8 is provided above the decoupling membrane 7. The space between the inner shell 221 and the outer shell 222 is divided into an upper part and a lower part by the decoupling membrane 7. Therefore, the entire hydraulic chamber is divided into an upper hydraulic chamber 23 and a lower hydraulic chamber 24 by the rubber body 9 in the second vulcanized body 2 together with the decoupling membrane 7. Moreover, the height of the inner shell 221 is smaller than the height of the outer shell 22, so that the space between the second core shaft 21 and the outer shell 222 is connected, and the viscous liquid in the hydraulic chamber can flow at the two ends of the inner shell 221.

[0024] And, if Fig. 20 As shown, the outer side of the inner shell 221 and the outer side of the outer shell 222 are both provided with an annular groove 227 that is recessed downward, and the height of the groove 227 on the inner shell 221 is greater than the height of the groove 227 on the outer shell 222, so that there can be a larger distance between the two grooves 227. Fig.15 and Fig.16 As shown, the decoupling membrane 7 includes an inner ring 71 and an outer ring 72, the inner ring 71 and the outer ring 72 are connected to form a bell mouth shape, and a lower convex ring 74 protruding downward is provided at the lower end surface of the inner ring 71 and the outer ring 72, and an upper convex ring 73 protruding upward is provided at the upper end surface. Fig.13 and Fig.14As shown, the press frame 8 includes an inner press ring 81 and an outer press ring 82, and the connecting ribs 83 connect the inner press ring 81 and the outer press ring 82 into a whole, and an annular press groove 86 is provided on the inner side of the lower end surface of the inner press ring 81 and the outer side of the lower end surface of the outer press ring 82. During assembly, the lower convex ring 74 of the inner ring 71 and the outer ring 72 are respectively inserted into the groove 227 of the inner shell 221 and the outer shell 222, and the upper convex ring 74 of the inner ring 71 and the outer ring 72 are respectively inserted into the press groove 86 of the inner press ring 81 and the outer press ring 82. The first vulcanized body 1 is installed above the press frame 8, so that the first vulcanized body 1 and the second vulcanized body 2 surround the decoupling membrane 7 and the press frame 8, and the first vulcanized body 1, the second vulcanized body 2 and the decoupling membrane 7 form an upper hydraulic chamber 23.

[0025] Moreover, if Fig.12 As shown, when the decoupling membrane 7 is in a free state, there is a certain gap between the decoupling membrane 7 and the connecting block 223 of the flow channel body 22. When the decoupling membrane 7 is subjected to a large downward impact, the decoupling membrane 7 can be deformed downward to reduce the pressure in the upper hydraulic chamber 23, and when the decoupling membrane 7 is deformed downward to a certain extent, it can contact with the connecting block 223. Therefore, the connecting block 223 provides support for the decoupling membrane 7 to prevent the decoupling membrane 7 from being damaged or even falling due to excessive deformation.

[0026] In addition, if Fig.19 and Fig. 20 As shown, the outer wall of the outer shell 222 is provided with a flow channel 224, and flow channel holes 225 are provided at both ends of the flow channel 224, which are respectively connected to the upper hydraulic chamber 23 and the lower hydraulic chamber 24. In addition, since the pressing frame 8 is installed between the inner shell 221 and the outer shell 222, when the first vulcanized body 1 and the second vulcanized body 2 are matched, a part of the first vulcanized body 1 also extends into the inner shell 222. Therefore, as shown in FIG. Fig.13 As shown, the upper end surface of the outer pressure ring 82 of the pressure frame 8 is provided with a second notch 84 and a second positioning block 85 protruding outward; Fig. 9 As shown, the lower end surface of the rubber body 9 of the first vulcanized body 1 is provided with a first notch 13 and a first positioning block 14 protruding outward, and correspondingly, the upper end surface of the housing 222 is provided with a positioning hole 226. The first notch 13 and the second notch 84 are both connected to the flow channel hole 225 at the upper part of the housing 222, and the second positioning block 85 and the first positioning block 14 are both extended into the positioning hole 226, ensuring that the flow channel 224 can be connected to the upper hydraulic chamber 23.

[0027] like Fig.21 and Fig. 22As shown, the third vulcanized body 3 includes a third mandrel 31 and a third outer sleeve 32 made of rubber vulcanization, and the rubber between the third mandrel 31 and the third outer sleeve 32 forms a leather cup 33, which serves as the bottom of the lower hydraulic chamber 24. Two steps 34 are provided above the leather cup 33 of the third mandrel 31, and the second vulcanized body 2 and the first vulcanized body 1 are sequentially sleeved on the third mandrel 31, and the lower end of the second mandrel 21 of the second vulcanized body 2 abuts against the step 34 of the next level, and the lower end of the first mandrel 11 of the first vulcanized body 1 abuts against the step 34 of the next level, so as to prevent the first mandrel 11, the second mandrel 21 and the third mandrel 31 from moving up and down.

[0028] like Fig.23 and 24 As shown, the fourth vulcanized body includes a rubber body 9 and a large outer jacket 41 vulcanized together, the rubber body 9 of the large outer jacket is located at the lower end of the entire hydraulic assembly, and the large outer jacket 41 extends from the rubber body 9 at the bottom end to the frame 100 and is connected thereto, enclosing the first vulcanized body 1, the second vulcanized body 2, the third vulcanized body 3 and the outer tube 5. At the same time, a plurality of reinforcing ribs 83 are provided between the connection between the upper surface of the large outer jacket and the side circumference to improve the strength of the curved connection.

[0029] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Technicians in the relevant technical field may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the protection scope of the present invention, and the protection scope of the present invention should be defined by the claims.

Claims

1. A hydraulic vehicle body suspension, comprising an elastic component (6) and a hydraulic component respectively mounted on a vehicle frame, characterized in that: The hydraulic assembly is a structure assembled from a first vulcanized body (1), a second vulcanized body (2), a third vulcanized body (3), an outer tube (5) and a fourth vulcanized body (4); the outer tube (5) first surrounds the first vulcanized body (1), the second vulcanized body (2) and the third vulcanized body (3) to form an internal integral structure, and then is assembled with the fourth vulcanized body (4) to form a hydraulic assembly; an upper hydraulic chamber (23) is formed between the first vulcanized body (1) and the second vulcanized body (2), a lower hydraulic chamber (24) is formed between the second vulcanized body (2) and the third vulcanized body (3), and a decoupling membrane (7) is provided inside the second vulcanized body (2) to separate the upper hydraulic chamber (23) from the lower hydraulic chamber (24).

2. The hydraulic vehicle body mount according to claim 1, characterized in that: The second vulcanized body (2) comprises a second mandrel (21) and a flow channel body (22); the rubber body (9) vulcanizes the second mandrel (21) and the flow channel body (22) into a whole; and a flow channel (224) is provided on the outer side surface of the flow channel body (22).

3. The hydraulic vehicle body mount according to claim 2, characterized in that: The flow channel body (22) comprises an inner shell (221) and an outer shell (222), wherein the inner shell (221) and the outer shell (222) form two rings, and the height of the inner shell (221) is less than the height of the outer shell (222). The flow channel (224) is arranged on the outer surface of the outer shell (222), and a flow channel hole (225) penetrating the outer shell (222) is arranged at the end of the flow channel (224). The rubber body (9) is vulcanized between the inner shell (221) and the second core shaft (21), and the decoupling membrane (7) is arranged between the inner shell (221) and the outer shell (222).

4. The hydraulic vehicle body mount according to claim 3, characterized in that: The inner surface of the outer shell (222) and the outer surface of the inner shell (221) are both provided with a circle of grooves (227) that are concave downwards; accordingly, the decoupling membrane (7) is annular with an inner ring (71) and an outer ring (72), and the lower edges of the inner ring (71) and the outer ring (72) are both provided with lower convex rings (74) that protrude downwards, the lower convex ring (74) of the inner ring (71) is inserted into the groove (227) of the inner shell (221), and the lower convex ring (74) of the outer ring (72) is inserted into the groove (227) of the outer shell (222).

5. The hydraulic vehicle body mount according to claim 4, characterized in that: The height of the groove (227) at the outer shell (222) of the flow channel body (22) is smaller than the height of the groove (227) at the inner shell (221); a bell-mouth shape is formed between the inner ring (71) and the outer ring (72) of the decoupling membrane (7); and a plurality of connecting blocks (223) are evenly arranged along the annular direction between the outer side wall of the groove (227) of the outer shell (222) and the outer side wall of the groove (227) of the inner shell (221); and when the decoupling membrane (7) is assembled to the flow channel body (22) and is in a free state, a gap exists between the connecting block (223) and the decoupling membrane (7).

6. The hydraulic vehicle body mount according to claim 3, characterized in that: A pressing frame (8) is also provided between the outer shell (222) and the inner shell (221) and is installed above the decoupling membrane (7). The pressing frame (8) includes an inner pressing ring (81), an outer pressing ring (82), and a connecting rib (83) connecting the inner pressing ring (81) and the outer pressing ring (82) into a whole. An annular pressing groove (86) is provided at the lower end surface of the inner side of the inner pressing ring (81) and the lower end surface of the outer side of the outer pressing ring (82). Correspondingly, an upper convex ring (73) protruding upward is provided at the upper edges of the inner ring (71) and the outer ring (72) of the decoupling membrane (7). The pressing groove (86) of the inner pressing ring (81) presses the upper convex ring (73) of the inner ring (71), and the pressing groove (86) of the outer pressing ring (82) presses the upper convex ring (73) of the outer ring (72).

7. The hydraulic vehicle body mount according to claim 6, characterized in that: A second notch (84) communicating with the flow channel hole (225) is provided at the upper edge of the outer pressure ring (82) of the pressure frame (8).

8. The hydraulic vehicle body mount according to claim 7, characterized in that: A second positioning block (85) protruding outward is also provided at the upper edge of the outer pressure ring (82) of the pressure frame (8); correspondingly, a positioning hole (226) is provided at the upper edge of the outer shell (222) of the flow channel body (22); when the second notch (84) is connected to the flow channel hole (225), the second positioning block (85) extends into the positioning hole (226).

9. The hydraulic vehicle body mount according to claim 8, characterized in that: The first vulcanized body (1) comprises a first core shaft (11) and a first outer sleeve (12). The rubber body (9) vulcanizes the first core shaft (11) and the first outer sleeve (12) into a whole. The first vulcanized body (1) is assembled above the press frame (8). A first notch (13) and a first positioning block (14) protruding outward are provided at the lower edge of the rubber body (9) of the first vulcanized body (1). When the first notch (13) is connected to the flow channel hole (225), the first positioning block (14) extends into the positioning hole (226).

10. The hydraulic vehicle body mount according to claim 1, characterized in that: The third vulcanized body (3) comprises a third mandrel (31) and a third outer sleeve (32) which are formed as a whole by vulcanization of rubber, and the outer wall of the third mandrel (31) is provided with two circles of steps (34), the second mandrel (21) of the second vulcanized body (2) is sleeved on the rear lower end of the third mandrel (31) to support the lower step (34), and the first mandrel (11) of the first vulcanized body (1) is sleeved on the rear lower end of the third mandrel (31) to support the upper step (34).

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