Novel hydraulic supporting leg for special vehicle

Abstract

The novel hydraulic supporting leg for the special vehicle comprises a piston rod arranged in an oil cylinder shell, a connecting ball head is fixedly arranged at the telescopic end of the piston rod, a ball bowl pressing cover is embedded in the spherical surface of the upper side of the connecting ball head, and a ball bowl base is embedded in the spherical surface of the lower side of the connecting ball head. The ball bowl gland and the ball bowl seat are mutually fixed through a bolt, and a ball joint is formed among the connecting ball head, the ball bowl gland and the ball bowl seat; a supporting foot plate is fixedly arranged on the ball bowl seat, the supporting foot plate is of an inverted bowl-shaped structure, and ground gripping tooth grooves I are uniformly formed in the circumferential bottom surface of the supporting foot plate; reinforcing rib plates are welded on the circumferential outer wall of the bottom end of the ball bowl seat at equal intervals; the hydraulic supporting leg has the advantages of being high in supporting strength, convenient to disassemble, assemble and maintain, good in supporting stability, simple in structure, long in service life and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic outriggers, in particular to a new type of hydraulic outrigger for special vehicles. Background Technique

[0002] The chassis of special vehicles is usually equipped with chassis outriggers. At present, the chassis outriggers adopted can generally be divided into two types: mechanical type and hydraulic type according to the structural form. The hydraulic outrigger generally mainly consists of an outrigger, a support oil cylinder and an outrigger support seat. The patent publication number CN204210434U discloses a hydraulic outrigger and an engineering vehicle, specifically discloses that the bottom end of the oil cylinder is connected with an outrigger seat through a spherical joint. After the support seat is tilted, it is not easy to reset, and the outrigger seat is a plane support structure. When used for operation on softer geology, there are problems such as poor support stability, difficult maintenance and short service life. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects, and provide a new type of hydraulic outrigger for special vehicles, which has high support strength, is convenient for disassembly and assembly, easy to maintain, good support stability, simple structure, stable and reliable in use, and can effectively solve the problems in the background technique.

[0004] To achieve the above object, the utility model provides the following technical solution: A new type of hydraulic outrigger for special vehicles, including a piston rod arranged inside an oil cylinder housing, the telescopic end of the piston rod penetrates to the outside of the oil cylinder housing and is fixedly provided with a connecting ball head. A ball bowl gland is nested on the upper spherical surface of the connecting ball head, and a ball bowl seat is nested on the lower spherical surface of the connecting ball head. A plurality of connecting holes I are opened along the circumferential direction on the top wall of the ball bowl gland, and connecting holes II are opened at positions corresponding to the connecting holes I at the bottom of the ball bowl seat. The ball bowl gland and the ball bowl seat are fixedly attached to each other by bolts passing through the connecting holes I and the connecting holes II. A spherical joint is formed among the connecting ball head, the ball bowl gland and the ball bowl seat; A support foot plate is fixedly provided on the ball bowl seat, the support foot plate is a bowl-shaped annular structure, and anti-slip tooth grooves I are evenly opened on the circumferential bottom surface of the support foot plate; The oil cylinder housing is a tubular structure, and the port at the top end of the oil cylinder housing is threadedly connected with an end cover. An oil inlet communicating with the inner cavity of the oil cylinder housing is opened on the end cover, and an oil outlet is opened on the circumferential outer wall of the oil cylinder housing.

[0005] Further, an outer convex ring is provided on the side of the ball bowl seat that fits with the ball bowl gland, and the ball bowl gland is nested inside the outer convex ring; A reset retaining ring is fixedly provided at the end of the oil cylinder housing, and the reset retaining ring is coaxially arranged with the outer convex ring. After the piston rod contracts and resets, the outer convex ring fits with the reset retaining ring.

[0006] Further, a shoulder is provided at the top end of the ball bowl seat, the support foot plate is fixedly nested on the ball bowl seat, and the top surface of the support foot plate abuts against the shoulder.

[0007] Further, a third connecting hole is provided on the shoulder of the ball bowl seat, a fourth connecting hole is provided on the top surface of the support foot plate at the position corresponding to the third connecting hole, and the support foot plate is fixedly connected to the ball bowl seat through a bolt passing through the third connecting hole and the fourth connecting hole.

[0008] Further, the ball bowl gland is composed of two semi-circular ball bowl covers arranged separately.

[0009] Further, the bottom end of the ball bowl seat penetrates into the cavity of the support foot plate, and reinforcing rib plates are welded at equal intervals on the circumferential outer wall of the bottom end of the ball bowl seat, and the top surface and side surface of the reinforcing rib plates are attached to the inner wall of the ball bowl seat.

[0010] Further, the bottom surface of the reinforcing rib plate is flush with the bottom surface of the support foot plate, and anti-slip tooth grooves II are uniformly provided on the bottom surface of the reinforcing rib plate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: for the novel hydraulic outrigger for special vehicles, the anti-slip tooth grooves I provided on the support foot plate and the anti-slip tooth grooves II provided on the reinforcing rib plates improve the grip of the support foot plate, and improve the stability of the hydraulic outrigger in supporting the special vehicle; after the piston rod contracts and resets, the support foot plate returns to the correct position to avoid affecting the next support operation; the hydraulic outrigger has high support strength, is convenient for disassembly and assembly, is easy to repair, has good support stability, and is stable and reliable in use. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is a partially enlarged view of the hydraulic outrigger of the present utility model at the support foot plate;

[0014] Figure 3 is a sectional view of the present utility model;

[0015] Figure 4 is an exploded view of the connection structure between the piston rod and the ball joint of the present utility model;

[0016] Figure 5 is a schematic structural diagram of the support foot plate of the present utility model;

[0017] Figure 6 is a schematic structural diagram of the ball bowl seat of the present utility model;

[0018] Figure 7 is a schematic structural diagram of the ball bowl gland of the present utility model;

[0019] Figure 8 is Figure 3 a partially enlarged view.

[0020] In the figure: 1. Oil cylinder housing; 101. End cover; 102. Oil inlet; 103. Oil outlet; 2. Piston rod; 3. Connecting ball head; 4. Ball bowl gland; 41. Semi-circular ball bowl cover; 411. First connecting hole; 5. Ball bowl seat; 51. Second connecting hole; 52. Shoulder; 53. Third connecting hole; 54. Outer convex ring; 6. Support foot plate; 61. First gripping tooth groove; 62. Fourth connecting hole; 7. Reset retaining ring; 8. Reinforcing rib plate; 81. Second gripping tooth groove. Specific implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0022] Please refer to Figures 1-8 , the present invention provides a technical solution: a new type of hydraulic outrigger for special vehicles, including a piston rod 2 arranged inside an oil cylinder housing 1; the oil cylinder housing 1 is of a tubular structure, and an end cover 101 is threadedly connected to the port at the top of the oil cylinder housing 1. An oil inlet 102 communicating with the inner cavity of the oil cylinder housing 1 is opened on the end cover 101, and an oil outlet 103 is opened on the circumferential outer wall of the oil cylinder housing 1;

[0023] The telescopic end of the piston rod 2 penetrates to the outside of the oil cylinder housing 1 and is fixedly provided with a connecting ball head 3. A ball bowl gland 4 is nested on the upper spherical surface of the connecting ball head 3, and a ball bowl seat 5 is nested on the lower spherical surface of the connecting ball head 3;

[0024] A plurality of first connection holes 411 are formed in the top wall of the spherical bowl gland 4 along its circumferential direction. Second connection holes 51 are formed at positions corresponding to the first connection holes 411 at the bottom of the spherical bowl seat 5. The spherical bowl gland 4 and the spherical bowl seat 5 are fixedly attached to each other by bolts passing through the first connection holes 411 and the second connection holes 51, and a spherical joint is formed among the connecting ball head 3, the spherical bowl gland 4, and the spherical bowl seat 5. An outer convex ring 54 is provided on one side of the spherical bowl seat 5 that is in contact with the spherical bowl gland 4, and the spherical bowl gland 4 is nested within the outer convex ring 54. A reset retaining ring 7 is fixedly provided at the end of the oil cylinder housing 1, and the reset retaining ring 7 is coaxially arranged with the outer convex ring 54. After the piston rod 2 contracts and resets, the outer convex ring 54 is in contact with the reset retaining ring 7. A shoulder 52 is provided at the top of the spherical bowl seat 5. The support foot plate 6 is fixedly nested on the spherical bowl seat 5, and the top surface of the support foot plate 6 abuts against the shoulder 52. A third connection hole 53 is formed in the shoulder 52 of the spherical bowl seat 5, and a fourth connection hole 62 is formed at a position corresponding to the third connection hole 53 on the top surface of the support foot plate 6. The support foot plate 6 is fixedly connected to the spherical bowl seat 5 by bolts passing through the third connection hole 53 and the fourth connection hole 62.

[0025] The spherical bowl seat 5 is fixedly provided with a support foot plate 6. The support foot plate 6 is a bowl-shaped annular structure, and a plurality of first ground gripping tooth grooves 61 are evenly formed on the circumferential bottom surface of the support foot plate 6. The bottom end of the spherical bowl seat 5 penetrates into the cavity of the support foot plate 6, and a plurality of reinforcing rib plates 8 are welded at equal intervals on the circumferential outer wall of the bottom end of the spherical bowl seat 5. The top surface and the side surface of the reinforcing rib plate 8 are in contact with the inner wall of the spherical bowl seat 5. The bottom surface of the reinforcing rib plate 8 is flush with the bottom surface of the support foot plate 6, and a plurality of second ground gripping tooth grooves 81 are evenly formed on the bottom surface of the reinforcing rib plate 8.

[0026] Furthermore, the spherical bowl gland 4 is composed of two semi-circular spherical bowl covers 41 that are separately arranged.

[0027] During use: When the hydraulic outriggers are in use, oil is fed into the cylinder housing 1 through the oil inlet 102, causing the piston rod 2 to drive the support foot plate 6 to descend and touch the ground. Since the support foot plate 6 is movably connected to the piston rod 2 through a spherical joint formed by the connecting ball head 3, the ball bowl gland 4, and the ball bowl seat 5, the support foot plate 6 can be stably supported on uneven ground. Moreover, the anti-slip tooth grooves 61 provided on the support foot plate 6 improve the anti-slip force of the support foot plate 6, enhancing the stability of the hydraulic outriggers in supporting special vehicles. After the operation is completed, oil is fed into the cylinder housing 1 through the oil outlet 103, causing the piston rod 2 to drive the support foot plate 6 to rise and reset. After the piston rod 2 contracts and resets, the outer convex ring 54 fits with the reset retaining ring 7, causing the support foot plate 6 to return to its original position and be aligned, so as not to affect the next support operation. The cylinder housing 1 and the end cover 101 are of a split structure, and the ball bowl gland 4 is composed of two semi-circular spherical bowl covers 41 arranged separately, enabling quick disassembly and assembly of the hydraulic support and facilitating the maintenance of the hydraulic support. The reinforcing rib plate 8 can not only increase the structural strength of the support foot plate 6, but also further increase the anti-slip force of the support foot plate 6 through the anti-slip tooth grooves 81 provided on the reinforcing rib plate 8, further enhancing the stability of the hydraulic outriggers in supporting special vehicles.

[0028] The novel hydraulic outriggers for special vehicles disclosed in this embodiment improve the anti-slip force of the support foot plate 6 through the anti-slip tooth grooves 61 provided on the support foot plate 6 and the anti-slip tooth grooves 81 provided on the reinforcing rib plate 8, enhancing the stability of the hydraulic outriggers in supporting special vehicles. After the piston rod 2 contracts and resets, the support foot plate 6 returns to its original position and is aligned, so as not to affect the next support operation. The hydraulic outriggers have high support strength, are convenient for disassembly and assembly, facilitate maintenance, and have good support stability.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel hydraulic outrigger for special vehicles, including a piston rod arranged inside an oil cylinder housing, characterized in that: The telescopic end of the piston rod penetrates to the outside of the oil cylinder housing and is fixedly provided with a connecting ball head. A ball bowl gland is nested on the upper spherical surface of the connecting ball head, and a ball bowl seat is nested on the lower spherical surface of the connecting ball head. A plurality of first connecting holes are formed in the top wall of the ball bowl gland along its circumferential direction. Connecting holes II are formed at positions corresponding to the first connecting holes at the bottom of the ball bowl seat. The ball bowl gland and the ball bowl seat are fixedly attached to each other by bolts passing through the first connecting holes and the second connecting holes, and a spherical joint is formed among the connecting ball head, the ball bowl gland, and the ball bowl seat. A supporting foot plate is fixedly provided on the ball bowl seat. The supporting foot plate is a bowl-shaped annular structure, and anti-slip tooth grooves I are uniformly formed in the circumferential bottom surface of the supporting foot plate. The oil cylinder housing is a tubular structure, and an end cover is threadedly connected to the port at the top end of the oil cylinder housing. An oil inlet communicating with the inner cavity of the oil cylinder housing is formed in the end cover, and an oil outlet is formed in the circumferential outer wall of the oil cylinder housing.

2. The novel hydraulic outrigger for special vehicles according to claim 1, wherein: An outer convex ring is provided on one side of the ball bowl seat where it fits with the ball bowl gland. The ball bowl gland is nested within the outer convex ring. A reset retaining ring is fixedly provided at the end of the oil cylinder housing, and the reset retaining ring is coaxially arranged with the outer convex ring. After the piston rod contracts and resets, the outer convex ring fits with the reset retaining ring.

3. The novel hydraulic outrigger for special vehicles according to claim 2, characterized in that: A shoulder is provided at the top end of the ball bowl seat. The supporting foot plate is fixedly nested on the ball bowl seat, and the top surface of the supporting foot plate abuts against the shoulder.

4. The novel hydraulic outrigger for special vehicles according to claim 3, wherein: A third connecting hole is formed in the shoulder of the ball bowl seat, and a fourth connecting hole is formed in the top surface of the supporting foot plate at a position corresponding to the third connecting hole. The supporting foot plate is fixedly connected to the ball bowl seat by bolts passing through the third connecting hole and the fourth connecting hole.

5. The novel hydraulic outrigger for special vehicles according to claim 1, wherein: The ball bowl gland is composed of two semi-circular ball bowl covers arranged separately.

6. The novel hydraulic outrigger for special vehicles according to claim 1, characterized in that: The bottom end of the ball bowl seat penetrates into the cavity of the supporting foot plate. Reinforcing rib plates are welded at equal intervals on the circumferential outer wall of the bottom end of the ball bowl seat. The top surface and the side surface of the reinforcing rib plates are in contact with the inner wall of the ball bowl seat.

7. The novel hydraulic outrigger for special vehicles according to claim 6, wherein: The bottom surface of the reinforcing rib plates is flush with the bottom surface of the supporting foot plate, and anti-slip tooth grooves II are uniformly formed in the bottom surface of the reinforcing rib plates.

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