Hydro-pneumatic spring support assembly

Abstract

The utility model provides a hydro-pneumatic spring support assembly, which belongs to the technical field of suspensions of off-highway mining dump trucks, and adopts the technical scheme that the hydro-pneumatic spring support assembly comprises a bottom plate, two supporting plates are fixed on the bottom plate, shaft holes are formed in the two supporting plates, a pin shaft is arranged between the two supporting plates, and the pin shaft is connected with the two supporting plates through bolts. The two ends of the pin shaft penetrate through the shaft holes in the two supporting plates correspondingly, limiting bosses are fixed to the outer side faces of the two supporting plates correspondingly, limiting grooves are formed in the limiting bosses, two locking screw holes are further formed in the limiting bosses and located in the two sides of the limiting grooves correspondingly, a pressing plate is arranged above the limiting bosses, and the pressing plate is connected with the limiting bosses. The pressing plate can be locked on the limiting boss; a limiting flange is further included, the limiting flange abuts against the end of the pin shaft, a limiting block is fixed to the limiting flange, and the limiting block can be locked in the limiting groove by the pressing plate. The limiting flange has the advantages that load impact on the pin shaft is weakened through transmission, it is guaranteed that the locking bolt is not prone to failure, and the risk that the limiting flange falls off is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of suspension technology for off-highway mining dump trucks, specifically relating to a gas spring support assembly. Background Technology

[0002] Off-highway mining dump trucks are primarily used in extremely harsh road and working environments such as large open-pit mines. These environments not only feature rugged and uneven roads but also involve enormous loads. Under such operating conditions, the vehicle's front air suspension system faces unprecedented load impacts. The front air spring, as a key component of the front air suspension system, also bears severe load impacts. The importance of the air spring support, as the supporting structure for the front air spring, is self-evident. It not only needs to ensure the stability and reliability of the front air spring under extreme loads, preventing failure or damage due to impacts, thus ensuring the normal operation of the entire suspension system; it must also effectively transfer and distribute these enormous loads, protecting other vehicle components from damage and extending the vehicle's service life.

[0003] The existing gas spring support is mounted on the vehicle frame, and the front gas spring is hinged to the lug on the gas spring support via a pin. A limiting flange for limiting the pin is installed on the outside of the lug, and the limiting flange is fixedly connected to the lug by bolts.

[0004] However, in actual use, due to the harsh working environment of off-highway mining dump trucks, the pin bearings are subjected to severe loads, and the bolts fixing the limit flange are subjected to shear loads. After prolonged use, the bolts are prone to failure due to shear force, causing the limit flange to fall off and resulting in the separation of the front gas spring from the gas spring support. Utility Model Content

[0005] This invention addresses the problem that bolts on fixed limiting flanges are prone to failure due to shear force, leading to flange detachment. It provides an oil-gas spring support assembly that can effectively reduce the shear force of the bolts and prevent the limiting flange from detaching.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: a gas spring support assembly includes a base plate, on which two support plates are fixed. Each support plate has a shaft hole, and a pin is positioned between the two support plates. Both ends of the pin pass through the shaft holes on the two support plates. Limiting bosses are fixed to the outer surfaces of both support plates, each with a limiting groove and two locking screw holes located on either side of the limiting groove. A pressure plate is positioned above the limiting bosses, and the pressure plate has two through holes corresponding to the two locking screw holes. Locking bolts that mate with the locking screw holes are installed in each through hole. The assembly also includes a limiting flange that abuts against the end of the pin. A limiting block is fixed to the limiting flange and can be locked within the limiting groove by the pressure plate. The pin is installed in the two shaft holes, with both ends extending out of the shaft holes. The two limiting flanges abut against the ends of the pin. The limiting block on the limiting flange is engaged within the limiting groove and locked in place by a pressure plate, thus restricting the pin and preventing its axial movement. When the pin is subjected to an impact load, the impact force is transmitted through the limiting block on the limiting flange to the limiting groove of the limiting boss. The friction between the limiting block and the limiting groove further resists the shear force, thereby significantly reducing the shear force on the locking bolt. This design ensures that the locking bolt is less prone to failure and avoids the risk of the limiting flange falling off.

[0007] Furthermore, the limiting flange is provided with a tapered hole, the small end of which has a diameter smaller than the pin's diameter, and the large end of which has a diameter larger than the pin's diameter. This tapered hole design provides guidance for the pin, effectively preventing axial slippage and ensuring that the limiting flange reliably restricts the pin's position.

[0008] Furthermore, a support boss is fixed to the outer surface of the support plate. The top surface of the support boss is flush with the bottom surface of the limiting groove. A connecting hole is provided on the support boss, and the position and size of the connecting hole are the same as those of the shaft hole. The support boss has a connecting hole with the same position and size as the shaft hole, ensuring that no additional stress is generated between the limiting flange and the limiting block when the pin is restricted, thereby effectively extending the service life of the limiting flange and the limiting block.

[0009] Furthermore, the connection between the bottom of the support plate and the base plate is an arc-shaped connection. The arc-shaped transition design at the connection between the bottom of the support plate and the base plate aims to eliminate stress concentration points and abrupt changes in cross-section, thereby improving the overall structural strength.

[0010] Furthermore, a first reinforcing rib is provided on the base plate, extending from the end of the base plate away from the support plate to the bottom of the support plate. The presence of the first reinforcing rib on the base plate, extending from the end of the base plate away from the support plate to the bottom of the support plate, effectively enhances the overall structural strength.

[0011] Furthermore, a second reinforcing rib is provided on the base plate, which extends smoothly from the side of the base plate away from the support plate to the top of the support plate. The addition of the second reinforcing rib to the base plate, which extends smoothly from the side of the base plate away from the support plate to the top of the support plate, not only further enhances the overall strength, but also cleverly avoids the outer contour of the front gas spring, effectively preventing any interference with the front gas spring.

[0012] Furthermore, it also includes an inner connecting plate, which has connecting holes, and a base plate has first mounting holes, the number and position of which are the same as the connecting holes. The inner connecting plate has connecting holes, and the base plate is equipped with first mounting holes whose number and position match the connecting holes. By installing the inner connecting plate onto the inner side of the frame longitudinal beam and riveting it to the frame longitudinal beam using the corresponding fit of the connecting holes and the first mounting holes, this significantly reduces stress concentration in the bolt hole area of ​​the longitudinal beam, effectively preventing cracking.

[0013] Furthermore, a mounting plate is fixed to the side of the base plate near the support plate, and the mounting plate has a second mounting hole. The second mounting hole is specifically designed for fixing the mounting frame, facilitating subsequent component installation and also contributing to improving the overall structural strength.

[0014] Furthermore, a third mounting hole is provided on the side of the base plate away from the support plate. This third mounting hole can be used to connect the crossbeam, effectively enhancing the overall structural strength.

[0015] As can be seen from the above technical solution, the advantages of this utility model are as follows: the pin is installed in two shaft holes, with both ends extending from the shaft holes respectively, and two limiting flanges abut against the two ends of the pin. The limiting blocks on the limiting flanges are locked in the limiting grooves and fixed by pressure plates, thereby restricting the axial movement of the pin. When the pin is subjected to load impact, the impact force is transmitted to the limiting groove of the limiting boss through the limiting blocks on the limiting flanges. The friction between the limiting blocks and the limiting grooves further resists the shear force, significantly reducing the shear force on the locking bolt. In summary, the load impact on the pin is weakened through the transmission of the limiting flanges and limiting bosses, and the shear force transmitted to the locking bolt is greatly reduced. At the same time, the friction between the limiting blocks and the limiting grooves further reduces the load impact. Therefore, this component can effectively ensure that the locking bolt is not prone to failure and avoid the risk of the limiting flange falling off. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the gas spring support in a specific embodiment of this utility model. Figure 1 .

[0018] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0019] Figure 3 This is a schematic diagram of the structure of the gas spring support in a specific embodiment of this utility model. Figure 2 .

[0020] Figure 4 Assembly diagram of a specific embodiment of this utility model Figure 1 .

[0021] Figure 5 for Figure 4 A magnified view of a section at point B.

[0022] Figure 6 Assembly diagram of a specific embodiment of this utility model Figure 2 .

[0023] In the diagram: 1. Base plate, 11. First mounting hole, 12. Third mounting hole, 2. Support plate, 21. Shaft hole, 22. Limiting boss, 221. Limiting groove, 222. Locking screw hole, 23. Supporting boss, 24. Locking bolt, 25. Pressure plate, 3. First reinforcing rib, 4. Second reinforcing rib, 5. Platform mounting plate, 51. Second mounting hole, 6. Frame, 7. Front air spring, 8. Pin, 81. Limiting flange, 82. Limiting block, 9. Inner connecting plate, 91. Connecting hole. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0025] A gas spring support assembly includes a gas spring support, a pin 8, a limiting flange 81, a pressure plate 25, a locking bolt 24, and an inner connecting plate 9. The gas spring support is fixed to the vehicle frame 6, and the front gas spring 7 is hinged to the gas spring support via the pin 8. The limiting flange 81 is installed at the end of the pin 8, and the pressure plate 25 presses the limiting flange 81 against the end of the pin 8 via the locking bolt 24, preventing axial displacement of the pin 8. The inner connecting plate 9 cooperates with the gas spring support to clamp the vehicle frame 6, effectively reducing stress concentration in the locking area.

[0026] like Figure 1 As shown, in this specific embodiment, the gas spring support includes a base plate 1 and a support plate 2. The bottom of the support plate 2 is fixedly connected to the upper surface of the base plate 1, and the connection is a rounded transition. The support plate 2 and the base plate 1 are integrally cast. There are two support plates 2, which are parallel to each other, and each support plate 2 has a shaft hole 21. A pin 8 is disposed between the two support plates 2, and both ends of the pin 8 pass through the shaft holes 21 on the two support plates 2 respectively.

[0027] like Figure 2 As shown, a support boss 23 is fixed on the outer surface of the support plate 2, and the support boss 23 and the support plate 2 are integrally cast. The top surface of the support boss 23 is flush with the bottom surface of the limiting groove 221. A connecting hole is provided on the support boss 23, and the center line of the connecting hole coincides with the axis of the pin 8. The position and size of the connecting hole are the same as those of the shaft hole 21.

[0028] like Figure 4 , 5As shown, limiting bosses 22 are fixed to the outer surfaces of both support plates 2, and the limiting bosses 22 are integrally cast with the support plates 2. Each limiting boss 22 has a limiting groove 221 and two locking screw holes 222, located on either side of the limiting groove 221. A pressure plate 25 is located above the limiting bosses 22, and has two through holes, the positions of which correspond to the two locking screw holes 222. Each through hole contains a locking bolt 24 that mates with the locking screw hole 222, thus locking the pressure plate 25 onto the limiting bosses 22.

[0029] In this specific embodiment, the limiting flange 81 is disc-shaped and has a tapered hole. The centerline of the tapered hole coincides with the axis of the pin 8, and the diameter of the small end of the tapered hole is smaller than the diameter of the pin 8, while the diameter of the large end of the tapered hole is larger than the diameter of the pin 8. Through the tapered hole, the limiting flange 81 can abut against the end of the pin 8. A limiting block 82 is fixed on the side of the limiting flange 81. The limiting block 82 and the limiting flange 81 are integrally cast, and the shape of the limiting block 82 is adapted to the limiting groove 221. When the limiting block 82 is stuck inside the limiting groove 221, the pressure plate 25 can fix the limiting block 82 in the limiting groove 221 by locking bolts 24, thereby fixing the limiting flange 81 so that the limiting flange 81 can continuously abut against and restrict the pin 8, preventing it from moving axially. In this embodiment, two limit flanges 81 and two pressure plates 25 are provided, located on the outside of the two support plates 2 respectively, to ensure that the pin 8 will not move axially.

[0030] like Figure 3 As shown, a first reinforcing rib 3 is provided on the base plate 1, and the first reinforcing rib 3 and the base plate 1 are integrally cast. The first reinforcing rib 3 extends from the end face of the base plate 1 away from the support plate 2 to the bottom of the support plate 2. In this embodiment, there are two first reinforcing ribs 3, and the two first reinforcing ribs 3 are respectively connected to the two support plates 2.

[0031] The base plate 1 is also provided with a second reinforcing rib 4, which is integrally cast with the base plate 1. The second reinforcing rib 4 extends smoothly from the side of the base plate 1 away from the support plate 2 to the top of the support plate 2. In this embodiment, there are two second reinforcing ribs 4, which are respectively connected to the two support plates 2.

[0032] like Figure 6As shown, the base plate 1 is provided with a first mounting hole 11, and the inner connecting plate 9 is provided with a connecting hole 91. The number and position of the first mounting holes 11 are the same as those of the connecting holes 91. By installing the inner connecting plate 9 on the inner side of the longitudinal beam of the frame 6 and riveting it to the longitudinal beam of the frame 6 using the corresponding engagement of the connecting holes 91 and the first mounting holes 11, the stress concentration phenomenon in the bolt hole area of ​​the longitudinal beam can be significantly reduced.

[0033] A mounting plate 5 is fixed to the side of the base plate 1 near the support plate 2. The mounting plate 5 has a second mounting hole 51. The second mounting hole 51 is specifically designed for fixing the mounting frame, facilitating subsequent component installation. A third mounting hole 12 is provided on the side of the base plate 1 away from the support plate 2. The third mounting hole 12 can be used to connect a crossbeam, effectively enhancing the overall structural strength.

[0034] As can be seen from the above embodiments, the beneficial effects of this utility model are as follows: the pin is installed in two shaft holes, with both ends extending out of the shaft holes respectively, and two limiting flanges abut against the two ends of the pin. The limiting blocks on the limiting flanges are locked in the limiting grooves and fixed by pressure plates, thereby restricting the axial movement of the pin. When the pin is subjected to load impact, the impact force is transmitted to the limiting groove of the limiting boss through the limiting blocks on the limiting flanges. The friction between the limiting blocks and the limiting grooves further resists the shear force, significantly reducing the shear force on the locking bolt. In summary, the load impact on the pin is weakened through the transmission of the limiting flanges and limiting bosses, and the shear force transmitted to the locking bolt is greatly reduced. At the same time, the friction between the limiting blocks and the limiting grooves further reduces the load impact. Therefore, this component can effectively ensure that the locking bolt is not prone to failure and avoid the risk of the limiting flanges falling off.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make 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 implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An oil gas spring support assembly, comprising a bottom plate (1), two support plates (2) are fixed on the bottom plate (1), shaft holes (21) are arranged on the two support plates (2) respectively, a pin shaft (8) is arranged between the two support plates (2), and both ends of the pin shaft (8) penetrate the shaft holes (21) on the two support plates (2) respectively, characterized in that, The outer side of the two support plates (2) is fixed with a limiting boss (22), the limiting boss (22) is provided with a limiting groove (221), and the limiting boss (22) is further provided with two locking screw holes (222), the two locking screw holes (222) are located on the two sides of the limiting groove (221), the upper portion of the limiting boss (22) is provided with a pressing plate (25), the pressing plate (25) is provided with two light holes, the positions of the two light holes correspond to the two locking screw holes (222) respectively, and the two light holes are both provided with locking bolts (24) matched with the locking screw holes (222); the limiting flange (81) is in abutment with the end portion of the pin shaft (8), the limiting flange (81) is fixed with a limiting block (82), and the limiting block (82) can be locked in the limiting groove (221) by the pressing plate (25).

2. The oil- gas spring support assembly of claim 1, wherein, The limiting flange (81) is provided with a tapered hole, the small end diameter of the tapered hole is smaller than the diameter of the pin shaft (8), and the large end diameter of the tapered hole is larger than the diameter of the pin shaft (8).

3. The oil- gas spring support assembly of claim 1, wherein, The outer side of the support plate (2) is fixed with a support boss (23), the top surface of the support boss (23) is flush with the bottom surface of the limiting groove (221), and the support boss (23) is provided with a communication hole, the position and size of the communication hole are the same as those of the shaft hole (21).

4. The oil- gas spring seat assembly of claim 1, wherein, The bottom of the support plate (2) is connected with the bottom plate (1) in a circular arc connection.

5. The oil- gas spring support assembly of claim 1, wherein, The bottom plate (1) is provided with a first reinforcing rib (3), and the first reinforcing rib (3) extends from the end surface of the bottom plate (1) away from the support plate (2) to the bottom of the support plate (2).

6. The oil- gas spring seat assembly of claim 1, wherein, The bottom plate (1) is further provided with a second reinforcing rib (4), and the second reinforcing rib (4) extends from the side surface of the bottom plate (1) away from the support plate (2) to the top of the support plate (2) smoothly.

7. The oil- gas spring support assembly of claim 1, wherein, The inner connecting plate (9) is provided with a connecting hole (91), and the bottom plate (1) is provided with a first mounting hole (11), and the number and position of the first mounting hole (11) are the same as those of the connecting hole (91).

8. The oil- gas spring seat assembly of claim 1, wherein, The side of the bottom plate (1) close to the support plate (2) is fixed with a gantry mounting plate (5), and the gantry mounting plate (5) is provided with a second mounting hole (51).

9. The oil- gas spring seat assembly of claim 1, wherein, The side of the bottom plate (1) away from the support plate (2) is provided with a third mounting hole (12).

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