Air suspension air bag folding alarm device and semitrailer with air suspension air bag folding alarm device

Abstract

An air suspension air bag folding alarm device comprises a folding alarm trigger cover, an alarm and a junction box, the folding alarm trigger cover is of an inner-outer double-layer elastic cover body structure, and the folding alarm trigger cover is installed between an air bag top plate and a guide arm and covers the outer side of an air bag. The inner elastic cover body and the outer elastic cover body of the folding alarm trigger cover and the alarm form a series circuit through a junction box, and electricity is taken from an ABS of the semitrailer. When the air bag is folded, an alarm function can be achieved, a driver is reminded to restore the air bag by operating the air bag to ascend and descend and the like, the abrasion failure of the folded air bag is effectively reduced or avoided, the safety of the semitrailer is improved, and the loss of the semitrailer is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, and specifically, to an air suspension airbag folding alarm device and a semi-trailer thereof. Background Art

[0002] The domestic logistics industry has developed rapidly. The bulkhead and barn semi-trailer is one of the main transportation tools. Due to its strong applicability and suitability for medium and long-distance transportation of bulk goods, it has become the first choice for medium and long-distance freight vehicles. With the implementation of new national standards such as GB1589, it is required that the suspension of the bulkhead semi-trailer must be an air suspension. However, after several years of market transportation, it is found that the airbag in the air suspension is prone to folding. The folded airbag is prone to interference with the tire. During driving, the airbag is easily worn and leaked, thus causing traffic accidents. Figure 1 As shown in the structural schematic diagram of a common lock-bar bulkhead semi-trailer, the lock-bar bulkhead semi-trailer includes a carriage assembly 1, a frame 2, a landing gear 3, and an air suspension system. Figure 2 is Figure 1 The structural schematic diagram of the air suspension system in . The air suspension system includes an air suspension bracket 4, a shock absorber 5, a guide arm 6, an airbag 7, and an airbag top plate 8. The airbag 7 is installed between the guide arm 6 and the airbag top plate 8.

[0003] Among them, the folding phenomenon of the airbag in the air suspension system frequently occurs during reverse driving and emergency braking, which is difficult to avoid. Currently, semi-trailers on the market do not have an airbag folding alarm function to remind the driver when the airbag folds, so that the airbag can be restored by operating the airbag lifting and lowering, etc.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the Invention

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, and thus provide an air suspension airbag folding alarm device and a semi-trailer thereof. The utility model can play an alarm function when the airbag folds, remind the driver to restore the airbag by operating the airbag lifting and lowering, etc., effectively reduce or avoid the wear and failure of the airbag after folding, improve the safety of the semi-trailer vehicle, and reduce the loss of the semi-trailer.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: an air suspension airbag folding alarm device, including a folding alarm trigger cover, an alarm, and a junction box. The folding alarm trigger cover is a double-layer elastic cover body structure inside and outside. The folding alarm trigger cover is installed between the airbag top plate and the guide arm and covers the outside of the airbag. The inner elastic cover body and the outer elastic cover body of the folding alarm trigger cover and the alarm form a series circuit through the junction box and obtain power from the semi-trailer ABS.

[0007] Based on the above, the folding alarm trigger cover includes an upper fixing plate and a lower fixing plate, both of which are made of insulating materials. The upper fixing plate is fixedly connected to the airbag top plate and is located at the top of the airbag, and the lower fixing plate is fixedly connected to the guiding arm and is located at the bottom of the airbag. Inner and outer two - ring spring fixing interface groups are provided on the outer edges of the upper fixing plate and the lower fixing plate. The inner - ring spring fixing interface group consists of several inner - ring interfaces arranged in a circumferential array, and the outer - ring spring fixing interface group consists of several outer - ring interfaces arranged in a circumferential array. The centers of the circumferences where each inner - ring interface is located coincide with the centers of the circumferences where each outer - ring interface is located. The diameter of the circumference where each inner - ring interface is located is smaller than the diameter of the circumference where each outer - ring interface is located and larger than the outer diameter of the airbag. Each inner - ring interface corresponds radially to each outer - ring interface one by one. Each upper - side inner - ring interface corresponds vertically to each lower - side inner - ring interface one by one, and each upper - side outer - ring interface corresponds vertically to each lower - side outer - ring interface one by one. An inner - ring spring is connected between two vertically - corresponding inner - ring interfaces, and an outer - ring spring is connected between two vertically - corresponding outer - ring interfaces. Each inner - ring spring forms the inner - layer elastic cover body, and each outer - ring spring forms the outer - layer elastic cover body. The inner - ring springs and the outer - ring springs are always in a linearly stretched state within the airbag stroke range. Each inner - ring spring is connected in series in turn and leads out an inner - ring wire joint, and each outer - ring spring is connected in series in turn and leads out an outer - ring wire joint. The inner - ring wire joint and the outer - ring wire joint are connected to a junction box and form a series circuit with the alarm through the junction box.

[0008] Based on the above, both the upper fixing plate and the lower fixing plate are disc - shaped structures with the same cross - sectional shape as the airbag.

[0009] Based on the above, the alarm is an audible and visual alarm.

[0010] A semi - trailer includes the air suspension airbag folding alarm device as described above.

[0011] The utility model has substantial features and progress compared with the prior art. Specifically, the utility model sets a folding alarm trigger cover outside the airbag. The folding alarm trigger cover is a double - layer elastic cover body structure inside and outside, and the inner - layer elastic cover body and the outer - layer elastic cover body of the folding alarm trigger cover form a series circuit with the alarm through a junction box. Power is taken from the semi - trailer ABS through the junction box. The inner - layer elastic cover body and the outer - layer elastic cover body of the folding alarm trigger cover act as switches of the series circuit. When the airbag folds, the folded part of the airbag exceeds the circular range of the airbag itself and squeezes the inner - layer elastic cover body to deform outward, triggering the inner - layer elastic cover body to contact the outer - layer elastic cover body, the series circuit is turned on, and the alarm works, thus reminding the driver to restore the airbag by operating the airbag lift and other methods, which can effectively reduce or avoid wear and failure after the airbag folds, improve the safety of the semi - trailer vehicle, and reduce the loss of the semi - trailer.

[0012] The folding alarm trigger cover has a simple structure, is convenient to fix, and has a good effect. Brief Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a common lock-bar bulk semi-trailer.

[0014] Figure 2 is Figure 1 a schematic structural diagram of the air suspension system in

[0015] Figure 3 It is a schematic structural diagram of the present utility model.

[0016] Figure 4 It is a schematic diagram of the installation of the alarm of the present utility model.

[0017] Figure 5 It is a schematic structural diagram of the folding alarm trigger cover of the present utility model.

[0018] Figure 6 is Figure 5 the top view of

[0019] Figure 7 It is a deformation schematic diagram of the folding alarm trigger cover when the airbag is folded.

[0020] In the figure: 1. Carriage assembly; 2. Frame; 3. Leg; 4. Air suspension bracket; 5. Shock absorber; 6. Guide arm; 7. Airbag; 8. Airbag top plate; 9. Alarm; 10. Junction box; 11. Upper fixing plate; 12. Lower fixing plate; 13. Inner ring interface; 14. Outer ring interface; 15. Inner ring spring; 16. Outer ring spring; 17. Inner ring wire joint; 18. Outer ring wire joint. Detailed Description of the Preferred Embodiments

[0021] The technical solution of the present utility model will be further described in detail below through specific embodiments.

[0022] Embodiment 1

[0023] As Figure 3-7 shown, an air suspension airbag folding alarm device includes a folding alarm trigger cover, an alarm 9 and a junction box 10. The folding alarm trigger cover is a double-layer elastic cover body structure inside and outside. The folding alarm trigger cover is installed between the airbag top plate 8 and the guide arm 6 and covers the outside of the airbag 7. The inner elastic cover body and the outer elastic cover body of the folding alarm trigger cover and the alarm 9 form a series circuit through the junction box 10 and draw power from the semi-trailer ABS. The junction box 10 is arranged on the frame 2, and the alarm 9 is installed on the frame 2 border;

[0024] Under normal conditions, the airbag 7 is not folded, the inner elastic cover body and the outer elastic cover body do not contact each other, the series circuit is in an open state, and the alarm 9 does not work; when the airbag 7 is folded, the folded part of the airbag 7 extends beyond the circular range of the airbag 7 itself and squeezes the inner elastic cover body to deform outward, triggering the contact between the inner elastic cover body and the outer elastic cover body, the series circuit is turned on, and the alarm 9 works.

[0025] In this embodiment, the folding alarm trigger cover includes an upper fixing plate 11 and a lower fixing plate 12. Both the upper fixing plate 11 and the lower fixing plate 12 are made of insulating materials. The upper fixing plate 11 is fixedly connected to the airbag top plate 8 and is located at the top of the airbag 7. The lower fixing plate 12 is fixedly connected to the guide arm 6 and is located at the bottom of the airbag 7. Inner and outer two-ring spring fixing interface groups are provided on the outer edges of the upper fixing plate 11 and the lower fixing plate 12. The inner-ring spring fixing interface group is composed of a plurality of inner-ring interfaces 13 arranged in a circumferential array, and the outer-ring spring fixing interface group is composed of a plurality of outer-ring interfaces 14 arranged in a circumferential array. The centers of the circumferences where the respective inner-ring interfaces 13 are located coincide with the centers of the circumferences where the respective outer-ring interfaces 14 are located. The diameter of the circumference where the respective inner-ring interfaces 13 are located is smaller than the diameter of the circumference where the respective outer-ring interfaces 14 are located and larger than the outer diameter of the airbag 7. The respective inner-ring interfaces 13 are respectively radially corresponding to the respective outer-ring interfaces 14 one by one. The respective upper inner-ring interfaces 13 are respectively vertically corresponding to the respective lower inner-ring interfaces 13 one by one. The respective upper outer-ring interfaces 14 are respectively vertically corresponding to the respective lower outer-ring interfaces 14 one by one. An inner-ring spring 15 is connected between two vertically corresponding inner-ring interfaces 13, and an outer-ring spring 16 is connected between two vertically corresponding outer-ring interfaces 14. The respective inner-ring springs 15 form the inner elastic cover body, and the respective outer-ring springs 16 form the outer elastic cover body. The inner-ring springs 15 and the outer-ring springs 16 are always in a straight-line stretching state within the stroke range of the airbag 7. The respective inner-ring springs 15 are connected in series in sequence and lead out an inner-ring wire connector 17, and the respective outer-ring springs 16 are connected in series in sequence and lead out an outer-ring wire connector 18. The inner-ring wire connector 17 and the outer-ring wire connector 18 are connected to the junction box 10 and form a series circuit with the alarm 9 through the junction box 10.

[0026] Among them, the inner ring spring 15 and the outer ring spring 16 are elastic and can also conduct electricity. They are easy to install. When the airbag 7 is folded, the folded part of the airbag 7 extends beyond the circular range of the airbag 7 itself and squeezes part of the inner ring spring 15 to bend outward and deform, causing part of the inner ring spring 15 to contact the outer ring spring 16 corresponding to its outside. As a result, the series current is connected, the alarm 9 is powered on and works, emitting an alarm signal to remind the driver to restore the airbag 7 by operating the lifting of the airbag 7 and other methods, effectively reducing or avoiding the wear and failure after the airbag 7 is folded, improving the safety of the semi-trailer vehicle, and reducing the loss of the semi-trailer. The number and arrangement positions of the inner ring spring 15 and the outer ring spring 16 can be set according to actual needs to ensure that the contact between the inner ring spring 15 and the outer ring spring 16 can be triggered when the airbag 7 is folded, and to prevent impacts from sand and gravel during driving.

[0027] In this embodiment, both the upper fixing plate 11 and the lower fixing plate 12 are disk-shaped structures with the same cross-sectional shape as the airbag 7.

[0028] In this embodiment, the alarm 9 is an audible and visual alarm 9. In order to alert the driver, a red flashing light is configured for the alarm 9 here.

[0029] Embodiment 2

[0030] This embodiment provides a semi-trailer, including the air suspension airbag folding alarm device described in Embodiment 1.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. An air bag folding alarm device, characterized in that: It includes a folding alarm trigger cover, an alarm and a junction box. The folding alarm trigger cover is an inner and outer double-layer elastic cover structure. The folding alarm trigger cover is installed between the airbag top plate and the guide arm and covers the outside of the airbag. The inner and outer elastic cover bodies of the folding alarm trigger cover form a series circuit with the alarm through the junction box and draw power from the semi-trailer ABS.

2. The air-suspension airbag folding alarm device according to claim 1, characterized in that: The folding alarm trigger cover includes an upper fixing plate and a lower fixing plate, both of which are made of insulating material, the upper fixing plate is fixedly connected to the airbag top plate and is located at the top of the airbag, the lower fixing plate is fixedly connected to the guide arm and is located at the bottom of the airbag, and the outer edges of the upper fixing plate and the lower fixing plate are provided with inner and outer circle spring fixing interface groups, the inner circle spring fixing interface group is composed of a number of inner circle interfaces arranged in a circular array, the outer circle spring fixing interface group is composed of a number of outer circle interfaces arranged in a circular array, the center of the circle where each inner circle interface is located coincides with the center of the circle where each outer circle interface is located, the diameter of the circle where each inner circle interface is located is smaller than the diameter of the circle where each outer circle interface is located and larger than the outer diameter of the airbag, and each inner circle interface is respectively connected to each outer circle interface one by one Radially corresponding, each inner ring interface on the upper side corresponds one by one with each inner ring interface on the lower side, each outer ring interface on the upper side corresponds one by one with each outer ring interface on the lower side, an inner ring spring is connected between the two corresponding inner ring interfaces, an outer ring spring is connected between the two corresponding outer ring interfaces, each inner ring spring constitutes the inner elastic cover body, each outer ring spring constitutes the outer elastic cover body, the inner ring spring and the outer ring spring are always in a linear tension state within the airbag stroke range, each inner ring spring is connected in series in sequence and leads to an inner ring wire connector, each outer ring spring is connected in series in sequence and leads to an outer ring wire connector, the inner ring wire connector and the outer ring wire connector are connected to the junction box and form a series circuit with the alarm through the junction box.

3. The air-suspension airbag folding alarm device according to claim 2, characterized in that: The upper fixing plate and the lower fixing plate are both disc-shaped structures having the same cross-sectional shape as the airbag.

4. The air-suspension airbag folding alarm device according to claim 1, characterized in that: The alarm is an audible and visual alarm.

5. A semitrailer, characterized in that: It comprises the air-suspended airbag folding alarm device as described in any one of claims 1 to 4.

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