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 invention relates to the technical field of semi-trailers, and in particular to an air-suspension airbag folding alarm device and a semi-trailer thereof. Background Art

[0002] The domestic logistics industry is developing rapidly. The barn transport semi-trailer is one of the main means of transportation. Due to its strong applicability, it is suitable for medium and long-distance transportation of bulk and other goods and has become the first choice for medium and long-distance freight vehicles. With the implementation of the new national standard GB1589, the suspension of the barn semi-trailer must be air suspension. However, after several years of market transportation, it was found that the airbags in the air suspension are prone to folding, and the folded airbags are prone to interfere with the tires. During driving, the airbags are prone to wear and leak, thus causing traffic accidents. Figure 1 The schematic diagram of the structure of a common lock-bar semi-trailer is shown in FIG. The lock-bar semi-trailer includes a vehicle body assembly 1, a vehicle frame 2, outriggers 3 and an air suspension system. Figure 2 yes Figure 1 The structure diagram of the air suspension system in the figure is as follows. 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 airbag folding phenomenon in the air suspension system frequently occurs during reversing and emergency braking, which is difficult to avoid. Currently, the 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 other methods.

[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 present invention is to address the deficiencies in the prior art and thereby provide an air-suspended airbag folding alarm device and a semi-trailer thereof. The present invention can serve as an alarm when the airbag is folded, reminding the driver to restore the airbag by operating the airbag lifting and other methods, thereby effectively reducing or avoiding the wear and failure of the airbag after folding, improving the safety of the semi-trailer vehicle, and reducing the loss of the semi-trailer.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a folding alarm device for an air-suspended airbag, comprising 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 elastic cover body and the outer elastic cover body 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.

[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 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 to one radially corresponding, each inner ring interface on the upper side corresponds one to one with each inner ring interface on the lower side, each outer ring interface on the upper side corresponds one to 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.

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

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

[0010] A semitrailer comprises the above-mentioned air suspension airbag folding alarm device.

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

[0012] The foldable alarm trigger cover has a simple structure, is easy to fix and has a good effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 yes Figure 1 Schematic diagram of the air suspension system.

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

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

[0017] Figure 5 It is a structural schematic diagram of the foldable alarm trigger cover of the present invention.

[0018] Figure 6 yes Figure 5 Top view of the .

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

[0020] In the figure: 1. Carriage assembly; 2. Frame; 3. Outrigger; 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 connector; 18. Outer ring wire connector. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described in detail below through specific implementation methods.

[0022] Example 1 like Figure 3-7 As shown, an air-suspended airbag folding alarm device includes a folding alarm trigger cover, an alarm 9 and a junction box 10. 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 8 and the guide arm 6 and covers the outer side of the airbag 7. The inner elastic cover and the outer elastic cover 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 set on the frame 2, and the alarm 9 is installed on the frame 2. Under normal conditions, the airbag 7 is not folded, the inner elastic cover is not in contact with the outer elastic cover, the series circuit is in a disconnected state, and the alarm 9 does not work; when the airbag 7 is folded, the folded part of the airbag 7 exceeds the circular range of the airbag 7 itself and squeezes the inner elastic cover to deform outward, triggering the inner elastic cover to contact with the outer elastic cover, the series circuit is turned on, and the alarm 9 works.

[0023] In this embodiment, the folding alarm trigger cover includes an upper fixing plate 11 and a lower fixing plate 12, both of which are made of insulating material. The upper fixing plate 11 is fixedly connected to the airbag top plate 8 and is located at the top of the airbag 7, and the lower fixing plate 12 is fixedly connected to the guide arm 6 and is located at the bottom of the airbag 7. The outer edges of the upper fixing plate 11 and the lower fixing plate 12 are provided with inner and outer spring fixing interface groups, the inner circle spring fixing interface group is composed of a plurality of inner circle interfaces 13 arranged in a circular array, and the outer circle spring fixing interface group is composed of a plurality of outer circle interfaces 14 arranged in a circular array. The center of the circle where each inner circle interface 13 is located coincides with the center of the circle where each outer circle interface 14 is located, the diameter of the circle where each inner circle interface 13 is located is smaller than the diameter of the circle where each outer circle interface 14 is located and larger than the outer diameter of the airbag 7, and each inner circle interface 13 is respectively connected to each outer circle interface 14 one by one Radially corresponding, each inner ring interface 13 on the upper side corresponds to each inner ring interface 13 on the lower side one by one up and down, each outer ring interface 14 on the upper side corresponds to each outer ring interface 14 on the lower side one by one up and down, an inner ring spring 15 is connected between the two corresponding inner ring interfaces 13, and an outer ring spring 16 is connected between the two corresponding outer ring interfaces 14. Each inner ring spring 15 constitutes the inner elastic cover body, and each outer ring spring 16 constitutes the outer elastic cover body. The inner ring spring 15 and the outer ring spring 16 are always in a linear tension state within the travel range of the airbag 7. Each inner ring spring 15 is connected in series in sequence and leads to an inner ring wire connector 17. Each outer ring spring 16 is connected in series in sequence and leads to 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.

[0024] Among them, the inner ring spring 15 and the outer ring spring 16 are elastic and conductive, and are easy to install. When the airbag 7 is folded, the folded part of the airbag 7 exceeds the circular range of the airbag 7 itself and squeezes part of the inner ring spring 15 to bend outward, so that part of the inner ring spring 15 contacts the outer ring spring 16 corresponding to its outside, thereby causing the series current to be connected, and the alarm 9 is powered on and works, sending an alarm signal to remind the driver to restore the airbag 7 by operating the airbag 7 to rise and fall, effectively reducing or avoiding the wear and failure of the airbag 7 after folding, improving the safety of the semi-trailer vehicle, and reducing the loss of the semi-trailer. The number and arrangement position of the inner ring spring 15 and the outer ring spring 16 can be set according to actual needs to ensure that the inner ring spring 15 can be triggered to contact the outer ring spring 16 when the airbag 7 is folded, and prevent the impact of sand and stones during driving.

[0025] In this embodiment, the upper fixing plate 11 and the lower fixing plate 12 are both disc-shaped structures with the same cross-sectional shape as the airbag 7 .

[0026] In this embodiment, the alarm 9 is an audible and visual alarm 9. In order to alert the driver, the alarm 9 is equipped with a red flashing light.

[0027] Example 2 This embodiment provides a semi-trailer, including the air-suspension airbag folding alarm device as described in Embodiment 1.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. An air-suspension airbag 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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