CN219777106U - Semitrailer air suspension test bed - Google Patents

Abstract

The utility model belongs to the technical field of semi-trailer air suspension, and is particularly a semi-trailer air suspension test bench, which includes a base, two limiting fixtures and two moving plates. The top of the base is fixedly connected with a mounting bracket. A cylinder is fixedly connected to the top of the mounting frame, and an axle plate is fixedly connected to the output shaft of the cylinder. An adjustable movable end connection assembly is provided on the axle plate, and is provided between the base and the two moving plates. There are adjustment components. The utility model has a reasonable structural design, which facilitates rapid disassembly and assembly of the limiting fixture, so that the limiting fixture can be replaced accordingly according to the air suspension of semi-trailers of different specifications, and it is also convenient to adjust the distance between the two limiting fixtures and The spacing between the connecting ears is used to connect the fixed end and the movable end of the semi-trailer air suspension of different specifications, thus improving the versatility of the device.

Description

A semi-trailer air suspension test bench

Technical field

The utility model relates to the technical field of semi-trailer air suspension, and in particular to a semi-trailer air suspension test bench.

Background technique

The national mandatory standard GB7258-2017 "Technical Conditions for Motor Vehicle Operation Safety" has been officially implemented on January 1, 2018. The new standard has added requirements for "the rear axle of dangerous goods transport trucks with a total mass greater than or equal to 12,000kg, and all dangerous goods The requirement that "transport semi-trailers, as well as three-axle fence-type and gate-type semi-trailers should be equipped with air suspension" has further promoted the application of air suspension on semi-trailers. Quality problems with semi-trailer air suspension products (such as airbag rupture, etc.) can cause road safety accidents such as rollover and vehicle loss of control, directly threatening road transportation and the safety of drivers' lives and property. After searching: a semi-trailer air suspension test bench with the authorized publication number CN210893710U belongs to the technical field of semi-trailer air suspension. The semi-trailer air suspension test bench includes: a bench fixed on the ground. Two servo mechanisms are arranged opposite each other on the bench. One end of the two servo mechanisms close to the ground is connected to the two ends of the simulated axle respectively. The simulated axle is used for To connect with the semi-trailer air suspension, the semi-trailer air suspension is set up by simulating the axle suspension, and the two servo mechanisms are tested by applying load to the semi-trailer air suspension.

However, the existing semi-trailer air suspension test bench still has shortcomings. The distance between the two limiting fixtures is inconvenient, so it can only clamp the semi-trailer air suspension of one specification length, which is also inconvenient. The limiter tooling needs to be disassembled and replaced according to the semi-trailer air suspension of different specifications, which reduces the practicality of the device. Therefore, we propose a semi-trailer air suspension test bench to solve the above problems.

Utility model content

The purpose of this utility model is to propose a semi-trailer air suspension test bench in order to solve the above-mentioned shortcomings.

In order to achieve the above purpose, the present utility model adopts the following technical solutions:

A semi-trailer air suspension test bench, including a base, two limiting fixtures and two moving plates. The top of the base is fixedly connected to a mounting frame, and the top of the mounting frame is fixedly connected to a cylinder. The cylinder is fixedly connected to the top of the base. An axle plate is fixedly connected to the output shaft, and an adjustable movable end connection assembly is provided on the axle plate. An adjustment assembly is provided between the base and the two moving plates, and between the moving plate and the limiting tooling. Equipped with disassembly and assembly components.

Preferably, a groove is provided on the top of the base, and the adjustment assembly includes a lower motor fixedly connected to one side of the base and a lower two-way screw rod rotatably connected to the inner walls on both sides of the groove. The output shaft of the lower motor Fixedly connected to one end of the lower two-way screw rod, the outer thread of the lower two-way screw rod is sleeved with two sliding plates, and the two sliding plates are fixedly connected to the bottom of the corresponding moving plate.

Preferably, both sliding plates are slidably sleeved in the groove.

Preferably, the bottom of the axle plate is provided with a connection groove, and the adjustable movable end connection assembly includes an upper motor fixedly connected to one side of the axle plate and an upper two-way screw rod rotatably connected to the inner walls of both sides of the connection groove. , the output shaft of the upper motor is fixedly connected to one end of the upper two-way screw, the outer thread of the upper two-way screw is covered with a traversing plate, and the bottoms of the two traversing plates are fixedly connected with connecting lugs.

Preferably, both traverse plates are slidably sleeved in the connecting groove.

Preferably, the disassembly and assembly assembly includes two plug-in boards fixedly connected to one side of the limiting tool, two sockets are provided on one side of the movable plate, and the two plug-in boards are movably plugged into the corresponding sockets. There is a through slot at the top of the plug-in board, and a return spring is provided in the through slot. Both ends of the return spring are fixedly connected to lifting plates, and the sides of the two lifting plates away from each other are fixedly connected to the limit plate. , both limit plates are movable and abutted on one side of the moving plate.

Preferably, both lifting plates are slidably sleeved in the through slot.

Preferably, the top of the mounting bracket is provided with two through holes, and guide rods are slidably sleeved in the two through holes, and both guide rods are fixedly connected to the top of the axle plate.

In the utility model, the semi-trailer air suspension test bench is convenient for rapid disassembly and assembly of the limiting tooling through the arrangement of inserting plates, sockets, moving plates, limiting plates, lifting plates and return springs. In order to replace the limiting tooling accordingly according to the air suspension of semi-trailers of different specifications, thereby improving the versatility of the device;

In the utility model, the semi-trailer air suspension test bench is conveniently adjusted to the distance between the two limiting fixtures through the arrangement of the lower motor, the lower two-way screw, the groove, the sliding plate and the moving plate. Clamp the two ends of the fixed ends of semi-trailer air suspensions with different tube lengths. Through the settings of the upper motor, upper two-way screw rod, transverse plate and connecting lugs, it is convenient to adjust the distance between the two connecting lugs. Connect with both ends of the active ends of semi-trailer air suspensions of different specifications;

The utility model has a reasonable structural design, which facilitates rapid disassembly and assembly of the limiting fixture, so that the limiting fixture can be replaced accordingly according to the air suspension of semi-trailers of different specifications, and it is also convenient to adjust the distance between the two limiting fixtures and The spacing between the connecting ears is used to connect the fixed end and the movable end of the semi-trailer air suspension of different specifications, thus improving the versatility of the device.

Description of the drawings

Figure 1 is a schematic structural diagram of a semi-trailer air suspension test bench proposed by the utility model;

Figure 2 is a cross-sectional view of a semi-trailer air suspension test bench proposed by the utility model;

Figure 3 is a schematic structural diagram of part A of a semi-trailer air suspension test bench proposed by the utility model;

Figure 4 is a top view of the limiting fixture and inserting plate of a semi-trailer air suspension test bench proposed by the utility model.

In the picture: 1. Base; 2. Mounting frame; 3. Cylinder; 4. Guide rod; 5. Axle plate; 6. Upper motor; 7. Traverse plate; 8. Connecting lug; 9. Upper two-way screw rod; 10. Connection slot; 11. Lower motor; 12. Lower two-way screw; 13. Slide plate; 14. Groove; 15. Moving plate; 16. Limiting tooling; 17. Insert plate; 18. Limiting plate; 19. Socket; 20, lifting plate; 21, return spring; 22, slot.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example.

Referring to Figure 1-4, a semi-trailer air suspension test bench includes a base 1, two limiting fixtures 16 and two moving plates 15. The top of the base 1 is fixedly connected to a mounting frame 2, and the top of the mounting frame 2 is fixed. A cylinder 3 is connected, and an axle plate 5 is fixedly connected to the output shaft of the cylinder 3. An adjustable movable end connection assembly is provided on the axle plate 5. An adjustment assembly is provided between the base 1 and the two moving plates 15. The moving plates A disassembly and assembly assembly is provided between 15 and the limiting tool 16 .

In the utility model, a groove 14 is provided on the top of the base 1. The adjustment assembly includes a lower motor 11 fixedly connected to one side of the base 1 and a lower two-way screw 12 rotatably connected to the inner walls of both sides of the groove 14. The lower motor 11 The output shaft is fixedly connected to one end of the lower two-way screw rod 12. The outer thread of the lower two-way screw rod 12 is sleeved with two sliding plates 13. The two sliding plates 13 are respectively fixedly connected to the bottom of the corresponding moving plate 15. Through the lower motor 11, The lower two-way screw rod 12 is driven to rotate, and the lower two-way screw rod 12 drives the two sliding plates 13, the moving plate 15 and the limiting fixture 16 to approach and move away from each other, thereby adjusting the distance between the two limiting fixtures 16. , in order to clamp the two ends of the fixed ends of semi-trailer air suspensions of different lengths, in which the suspension air bag is fixedly connected to the air bag limiting plate in the limiting tool 16, and the semi-trailer air suspension is connected to the limiting tool 16 limit hook connection.

In the present utility model, the two sliding plates 13 are slidably sleeved in the groove 14, which can guide and limit the sliding plates 13 so that they do not rotate together with the lower two-way screw rod 12.

In the utility model, a connecting groove 10 is provided at the bottom of the axle plate 5. The adjustable movable end connection assembly includes an upper motor 6 fixedly connected to one side of the axle plate 5 and an upper motor 6 rotatably connected to the inner walls of both sides of the connecting groove 10. The output shaft of the upper motor 6 is fixedly connected to one end of the upper two-way screw 9. The outer thread of the upper two-way screw 9 is provided with a transverse plate 7. The bottoms of the two transverse plates 7 are fixedly connected with The connecting lug 8 drives the rotation of the upper two-way screw rod 9 through the upper motor 6. The upper two-way screw rod 9 drives the two transverse plates 7 and the connecting lug 8 to move closer to or away from each other, thereby allowing the two connecting lug 8 to be adjusted. The spacing between them is so that the two ends of the movable end of the air suspension of semi-trailers of different specifications are connected to the connecting ears 8 respectively.

In the present utility model, the two traversing plates 7 are slidably sleeved in the connecting groove 10, which facilitates the guidance and limiting of the traversing plates 7, making their movement more stable and smooth.

In the present utility model, the disassembly and assembly assembly includes two plug-in boards 17 fixedly connected to one side of the limiting tool 16. Two sockets 19 are provided on one side of the movable plate 15. The two plug-in boards 17 are respectively movably plugged into corresponding In the socket 19, a through slot 22 is provided at the top of the insert plate 17. A return spring 21 is provided in the through slot 22. Both ends of the return spring 21 are fixedly connected with lifting plates 20, and the sides of the two lifting plates 20 that are far away from each other are The limiting plate 18 is fixedly connected, and both of the two limiting plates 18 are movable against one side of the moving plate 15. According to the semi-trailer air suspension of different specifications, the two limiting plates 18 are pressed, so that the two limiting plates 18 Retract the slot 22 and squeeze the return spring 21, so that the insert plate 17 is not limited. At this time, the limit fixture 16 and the insert plate 17 can be disassembled from the moving plate 15, and then the corresponding limit fixture can be removed. 16 and insert plate 17 are inserted into the socket 19. When inserted, the limit plate 18 will be automatically compressed back into the groove 22 and squeeze the return spring 21. When the limit tool 16 contacts the moving plate 15, the limit plate 18 will be The plate 18 is just not under pressure. Under the elastic force of the return spring 21, the limiting plate 18 stretches out and abuts against the other side of the moving plate 15, so that the limiting tool 16 can be fixed on the moving plate 15, thereby facilitating The disassembly and assembly of the limiting fixture 16 allows the corresponding limiting fixture 16 to be replaced according to the air suspension of semi-trailers of different specifications, thereby improving the versatility of the device.

In the present utility model, the two lifting plates 20 are slidably sleeved in the through slot 22 to facilitate the guidance of the lifting plates 20 and make their movement more stable and smooth.

In the utility model, two through holes are provided on the top of the mounting frame 2, and guide rods 4 are slidably sleeved in the two through holes. Both guide rods 4 are fixedly connected to the top of the axle plate 5 to facilitate vehicle alignment. The bridge plate 5 is guided to make its movement more stable and smooth.

In the utility model, when in use, according to the semi-trailer air suspension of different specifications, the two limit plates 18 are pressed, so that the two limit plates 18 retract into the through slot 22 and squeeze the return spring 21, so that the insertion The plate 17 is limited. At this time, the limiting tool 16 and the insert plate 17 can be disassembled from the moving plate 15, and then the corresponding limit tool 16 and the insert plate 17 are inserted into the socket 19. When inserted, the limit The plate 18 will be automatically compressed back into the groove 22 and squeeze the return spring 21. When the limit tool 16 contacts the moving plate 15, the limit plate 18 is just not pressed. Under the elastic force of the return spring 21, the limit plate 18 is not pressed. The positioning plate 18 extends out and abuts on the other side of the moving plate 15, thereby fixing the limiting tool 16 on the moving plate 15, thus facilitating the disassembly and assembly of the limiting tool 16 so as to adjust the air volume of semi-trailers of different specifications. The suspension replaces the corresponding limiting tooling 16 to improve the versatility of the device. According to the semi-trailer air suspension of different specifications, the lower motor 11 drives the lower two-way screw rod 12 to rotate, and the lower two-way screw rod 12 drives the rotation of the lower two-way screw rod 12. The two sliding plates 13, the moving plate 15 and the limiting tool 16 are close to and away from each other, and the distance between the two limiting tools 16 can be adjusted to adjust the two ends of the fixed ends of the semi-trailer air suspension of different lengths. Clamping is performed, in which the suspension air bag is fixedly connected to the air bag limiting plate in the limiting tool 16, the semi-trailer air suspension is connected to the limit hook in the limiting tool 16, and the upper two-way screw rod is driven by the upper motor 6 9 rotates, the upper two-way screw rod 9 drives the two transverse plates 7 and the connecting lugs 8 to move closer to or away from each other, and then the distance between the two connecting lugs 8 can be adjusted to facilitate the air suspension of semi-trailers of different specifications. Both ends of the movable end are connected to the connecting ears 8 respectively, and then the cylinder 3 is started through the controller, and different signals are selected as preset signals to truly simulate road driving conditions, and the semi-trailer air suspension is tested.

The above are only preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person familiar with the technical field can, within the technical scope disclosed by the present utility model, implement the present utility model according to the present utility model. Novel technical solutions and utility model concepts, including equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims (8)

1. A semi-trailer air suspension test bench, characterized in that it includes a base (1), two limiting fixtures (16) and two moving plates (15). The top of the base (1) is fixedly connected with Mounting frame (2), a cylinder (3) is fixedly connected to the top of the mounting frame (2), and an axle plate (5) is fixedly connected to the output shaft of the cylinder (3). The axle plate (5) ) is provided with an adjustable movable end connection component, an adjustment component is provided between the base (1) and the two moving plates (15), and an adjusting component is provided between the moving plate (15) and the limiting tooling (16). Disassembly and assembly of components. 2. A semi-trailer air suspension test bench according to claim 1, characterized in that a groove (14) is provided on the top of the base (1), and the adjustment assembly includes a gasket fixedly connected to the base (1). ) The lower motor (11) on one side is rotatably connected to the lower two-way screw rod (12) on the inner walls of both sides of the groove (14). The output shaft of the lower motor (11) is fixedly connected to the lower two-way screw rod (12). At one end, the outer thread of the lower two-way screw (12) is provided with two sliding plates (13), and the two sliding plates (13) are fixedly connected to the bottom of the corresponding moving plate (15). 3. A semi-trailer air suspension test bench according to claim 2, characterized in that both sliding plates (13) are slidably sleeved in the groove (14). 4. A semi-trailer air suspension test bench according to claim 1, characterized in that a connection groove (10) is provided at the bottom of the axle plate (5), and the adjustable movable end connection assembly includes The upper motor (6) is fixedly connected to one side of the axle plate (5) and the upper bidirectional screw rod (9) is rotatably connected to the inner walls of both sides of the connecting groove (10). The output shaft of the upper motor (6) is fixed. Connected to one end of the upper two-way screw rod (9), the outer thread of the upper two-way screw rod (9) is provided with a transverse plate (7), and the bottoms of the two transverse plates (7) are fixedly connected with connecting lugs (8). 5. A semi-trailer air suspension test bench according to claim 4, characterized in that both traverse plates (7) are slidably sleeved in the connecting groove (10). 6. A semi-trailer air suspension test bench according to claim 1, characterized in that the disassembly assembly includes two insert plates (17) fixedly connected to one side of the limiting tool (16), so Two sockets (19) are provided on one side of the movable board (15), and the two plug-in boards (17) are movably plugged into the corresponding sockets (19). The top of the plug-in board (17) is provided with a through hole. Groove (22), a return spring (21) is provided in the through groove (22), both ends of the return spring (21) are fixedly connected with lifting plates (20), and the two lifting plates (20) are far away from each other One side of the two limit plates (18) is fixedly connected to the limit plate (18), and both the two limit plates (18) are movably abutted on one side of the moving plate (15). 7. A semi-trailer air suspension test bench according to claim 6, characterized in that both lifting plates (20) are slidably sleeved in the through groove (22). 8. A semi-trailer air suspension test bench according to claim 1, characterized in that two through holes are provided on the top of the mounting frame (2), and guides are provided with sliding sleeves in both through holes. rod (4), and the two guide rods (4) are fixedly connected to the top of the axle plate (5).