Air suspension limiting assembly, air suspension and automobile

Abstract

The invention discloses an air suspension limiting assembly, an air suspension and an automobile, and belongs to the technical field of automobile suspensions.The air suspension limiting assembly comprises a limiting support assembly and a buffer block assembly.The limiting support assembly comprises a limiting support, a first fastening auxiliary assembly and a second fastening auxiliary assembly; the first fastening auxiliary assembly and the second fastening auxiliary assembly are fixed to the limiting support in a limiting mode, and the buffer block assembly is detachably fixed to the bottom of the limiting support assembly. The limiting support assembly is composed of the limiting support and the fastening auxiliary assembly, wherein the limiting support is provided with the weight reduction groove and made of light materials, and the light weight target of reducing the weight by 50% can be achieved; the stroke transverse limiting gaskets are arranged between the limiting support and the buffer block assembly, the number of the stroke transverse limiting gaskets is increased or decreased according to the height requirements of different vehicle types, and universality is improved; the buffer block assembly is fixedly connected to the bottom of the limiting support through threads and can be replaced in time after being abraded, and operation is easy and convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive suspensions, and more specifically, relates to an air suspension limit assembly, an air suspension, and an automobile. Background Art

[0002] The main load-bearing component of a commercial vehicle equipped with an air suspension is the air spring, which can absorb vibrations caused by uneven road surfaces with a relatively small spring stiffness and a relatively low natural frequency, reducing the impact of vibrations on the vehicle body and the road surface. Moreover, it can adjust the suspension height in a timely manner according to the magnitude of the load borne by the vehicle, maintaining a constant distance between the road surface and the vehicle body, providing passengers with a more comfortable riding experience.

[0003] The air suspension limit structure mainly serves to prevent problems caused by excessive upward travel of components such as tires and drive axles under the spring mass during vehicle driving, which may lead to interference with adjacent components. At the same time, it also plays a role in temporarily supporting the spring mass when the air spring fails to work, and is an indispensable component in the suspension structure.

[0004] The air suspension limit structure is mainly divided into two types: one is internal airbag limit, and the other is external airbag limit. The internal airbag limit structure cannot directly observe the working state of the limit mechanism, and it is necessary to use professional detection equipment or disassemble it to understand whether it is working properly, which is not conducive to daily inspection and maintenance. Once a failure occurs in the internal airbag limit structure, it is necessary to disassemble the airbag for repair or replacement, and the repair process is relatively complex, with relatively high repair costs and difficulties.

[0005] The external limit structure has obvious advantages in terms of weight, cost, and component integration. The external airbag limit structure can directly observe the working state of the limit components, facilitating the timely discovery of problems during daily inspections, such as whether the components are deformed or worn, which is conducive to taking timely measures for repair or replacement to ensure the normal operation of the suspension system; if a failure occurs, the limit components can be maintained and replaced without disassembling the airbag, reducing the repair costs and difficulties and improving the repair efficiency; the external limit structure can be designed as a standardized component, applicable to various different types and specifications of airbags, with strong versatility, facilitating production and inventory management.

[0006] The existing external air suspension limit assembly is mainly an integrated structure of a metal bracket and a buffer rubber cushion. The weight of the metal bracket is relatively heavy, unable to meet the increasing requirements for vehicle lightweighting of commercial vehicles; after the buffer rubber cushion wears out, the entire structure must be replaced, resulting in high repair costs; the suspension stroke cannot be adjusted, unable to meet the needs of different vehicle models, with low versatility and high costs. Summary of the Invention

[0007] The object of the present invention is to provide an air suspension limit assembly, an air suspension and an automobile. By means of the structure of the limit bracket assembly and the PA66-LGF50% material of the limit bracket, the lightweight goal of reducing the weight by 50% is achieved; a travel lateral limit gasket is arranged between the limit bracket and the buffer block assembly, and the installation quantity of the travel lateral limit gasket is increased or decreased according to the height requirements of different vehicle models, so as to improve the universality of the air suspension limit assembly of the present invention; the buffer block assembly is fixedly connected to the bottom of the limit bracket by threads and can be replaced in time when worn, and the operation is simple and convenient.

[0008] The specific scheme content is as follows:

[0009] An air suspension limit assembly comprises a limit bracket assembly and a buffer block assembly. The limit bracket assembly comprises a limit bracket, a first fastening auxiliary component and a second fastening auxiliary component. The first fastening auxiliary component and the second fastening auxiliary component are respectively limited and fixed on the limit bracket, and the buffer block assembly is detachably fixed to the bottom of the limit bracket assembly.

[0010] The buffer block assembly of the air suspension limit assembly of the present invention is bolted to the bottom of the composite material limit bracket assembly. After the buffer block is worn, only the buffer block assembly needs to be replaced, with low maintenance cost and fast replacement speed; the existing external limit assembly of the air suspension is a structure of a metal bracket plus a rubber soft pad, and the weight of a conventional metal bracket is too large to meet the increasing requirements of the whole vehicle lightweight of commercial vehicles. However, the limit bracket of the composite material limit bracket assembly of the air suspension limit assembly of the present invention is made of a lightweight material, and the lightweight material includes nylon, carbon fiber composite material, etc. The present invention preferably uses PA66-LGF50% as the manufacturing material of the limit bracket. The English full name of PA66-LGF50% is Long Glass Fiber Reinforced Polyamide 66. This material is a kind of reinforced nylon 66 (PA66), and its mechanical properties are enhanced by adding long glass fibers (LGF). Specifically, LGF50 means long glass fiber reinforced nylon with a fiber content of 50%. It has high wear resistance, high strength, high rigidity and impact resistance; compared with the current manufacturing material of the limit bracket, which is metal, PA66-LGF50% has a lower density, and can effectively reduce the weight of the limit bracket while ensuring the performance, meeting the requirements of the automobile for lightweight.

[0011] The limit bracket of the present invention includes a plurality of support vertical plates, a suspension connection back plate, and a buffer connection bottom plate. The number of support vertical plates is set according to needs. Taking three support vertical plates as an example in the present invention, the buffer connection bottom plate is horizontally and transversely arranged, and the suspension connection back plate is vertically and fixedly connected to the rear edge of the upper end surface of the buffer connection bottom plate in a matching manner to form an L-shaped structure. The three support vertical plates are vertically and fixedly arranged on the upper end surface of the buffer connection bottom plate in parallel at intervals, and their rear side walls are fixedly connected to the front end surface of the suspension connection back plate. The suspension connection back plate is provided with a first inner sleeve fixing hole at a position between two adjacent support vertical plates. The suspension connection back plate is not necessarily a flat plate structure. In the present invention, a stepped structure is preferably adopted. The thickness of the suspension connection back plate is different, i.e., thinner at the top and thicker at the bottom. The first inner sleeve fixing hole is provided on the vertical end surface of the step. Because the opening positions are different, the depths of the first inner sleeve fixing holes at different heights and the lengths of the corresponding anti-crushing embedded sleeves are also different. The first inner sleeve fixing holes and the anti-crushing embedded sleeves at the same height are fixedly installed in an interference fit. The present invention also evenly provides a plurality of weight reduction grooves on the back surface of the suspension connection back plate and the bottom surface of the buffer connection bottom plate to achieve the purpose of further lightening the weight. A plurality of reinforcing plates are provided on the front and back surfaces of the lower part of the suspension connection back plate. The reinforcing plates can ensure that while increasing the weight reduction grooves, the support thickness and cross-sectional area of the lower part of the limit bracket are increased, thereby improving its load-bearing capacity; effectively reducing the elastic deformation of the lower part of the limit bracket when stressed, making it more stable; the existence of the reinforcing plates can also evenly disperse the concentrated stress generated by the lower part of the limit bracket during operation. The buffer connection bottom plate is provided with a second inner sleeve fixing hole for bolt-fixing the buffer block assembly.

[0012] The first fastening auxiliary component of the composite material limit bracket assembly includes a limit gasket and an anti-crushing embedded sleeve, and the second fastening auxiliary component includes an embedded internal thread sleeve. The limit gasket, the anti-crushing embedded sleeve, and the embedded internal thread sleeve are all made of hard metal materials, such as metals that are not easily crushed by the bolt pre-tightening force, such as copper, iron, stainless steel, etc. The embedded internal thread sleeve is interference-fitted and embedded in the second inner sleeve fixing hole, the limit gasket is interference-fitted and embedded in the front large hole of the first inner sleeve fixing hole, and the anti-crushing embedded sleeve is interference-fitted and embedded in the rear small hole of the first inner sleeve fixing hole. The limit bracket installation bolt sequentially passes through the inner hole of the limit gasket and the anti-crushing embedded sleeve and is then thread-fixed on the vehicle longitudinal beam. The anti-crushing embedded sleeve and the embedded internal thread sleeve play a role in supporting the bolt pre-tightening force and preventing the limit bracket from being crushed by the bolt pre-tightening force. The limit gasket plays a role in preventing the limit bracket from laterally shifting, and the fastening auxiliary component can improve the strength of the limit bracket.

[0013] The buffer block of the buffer block assembly is a part with a metal plate on the upper part and rubber on the lower part, which are vulcanized together. The rubber part of the buffer block can contact the drive axle to play a buffering role. The buffer block is provided with at least one buffer block threaded through hole. In order to obtain a better fixing effect, more buffer block threaded through holes can be provided. In this invention, two buffer block threaded through holes are selected as an example: the two buffer block threaded through holes are respectively opened at the left and right ends of the buffer block; the two fixing bolts are respectively inverted, that is, the bolt heads are downward and the bolts are upward, and are threadedly connected to the buffer block threaded through holes and penetrate through. The threaded tails of the screws after penetration are threadedly fixed to the embedded internal threaded sleeve that is press-fitted and fixed in the second inner sleeve fixing hole. After the buffer block is worn, the fixing bolts can be removed for replacement. Compared with the existing integrated structure of the limit bracket and the buffer block assembly, the operation is simple and convenient, the maintenance cost is low, and the maintenance time is short.

[0014] The buffer block assembly further includes a stroke lateral limit gasket, which is clamped between the buffer block and the buffer connection bottom plate. The thickness of each stroke lateral limit gasket is designed to be 10 mm (the thickness can be set according to the actual situation). The stroke lateral limit gasket is provided with gasket threaded connection holes that match the position and size of the buffer block threaded through holes. After the fixing bolts penetrate through the buffer block threaded through holes and the gasket threaded connection holes, they are threadedly fixed in the embedded internal threaded sleeve. The number of stroke lateral limit gaskets is increased or decreased according to the height requirements of different vehicle models, improving the versatility of the air suspension limit assembly of this invention and reducing costs.

[0015] Furthermore, the limit bracket includes a plurality of support vertical plates, a suspension connection back plate, and a buffer connection bottom plate. The buffer connection bottom plate is horizontally and laterally arranged. The suspension connection back plate is vertically and fixedly connected to the rear edge of the upper end face of the buffer connection bottom plate in a matching manner to form an L-shaped structure. A plurality of support vertical plates are vertically and fixedly arranged at intervals in parallel on the upper end face of the buffer connection bottom plate, and their rear side walls are all vertically and fixedly connected to the front end face of the suspension connection back plate. First inner sleeve fixing holes are provided on the suspension connection back plate at the rear ends of two adjacent support vertical plates, and second inner sleeve fixing holes are provided on the buffer connection bottom plate. The first fastening auxiliary component is press-fitted and limited in the first inner sleeve fixing hole, and the second fastening auxiliary component is press-fitted and limited in the second inner sleeve fixing hole.

[0016] There are at least two supporting vertical plates in the present invention. Taking three supporting vertical plates as an example for the limit bracket of the present invention, the buffer connection bottom plate is horizontally and transversely arranged, and the suspension connection back plate is vertically and fixedly connected to the rear edge of the upper end face of the buffer connection bottom plate in a matching manner to form an L-shaped structure. The three supporting vertical plates are vertically and fixedly arranged on the upper end face of the buffer bottom plate at parallel intervals, and the rear side walls of the three supporting vertical plates are simultaneously fixedly connected to the front end face of the suspension connection back plate, forming a structure of a two-grid vertical document frame. A stepped structure is provided on the front end face of the suspension connection back plate, and a first inner sleeve fixing hole is provided on the vertical end face of the step. A total of four first inner sleeve fixing holes are provided. The air suspension limit assembly is threadedly fixed in the anti-crush embedded sleeve in the first inner sleeve fixing hole through four limit bracket mounting bolts. The buffer block assembly is threadedly fixed inside the embedded internal thread sleeve in the second inner sleeve fixing hole. The buffer block is located directly above the drive axle to buffer the impact on the air suspension limit assembly when the drive axle jumps upward. The design of the stepped surface of the suspension connection back plate makes the lengths of the anti-crush embedded sleeves different, which helps to make the installation more firm. It can also disperse the force borne by the limit bracket to multiple points, transfer the force to the longitudinal beam more evenly, reduce the situation of excessive local stress, improve the reliability and stability of the connection, and extend the service life of the bracket and the longitudinal beam.

[0017] Further, the first fastening auxiliary component includes a limit gasket and an anti-crush embedded sleeve, and the second fastening auxiliary component includes an embedded internal thread sleeve. The limit gasket is an oblong annular gasket. The first inner sleeve fixing hole is a stepped structure through hole, which includes a large front hole and a small rear hole. The anti-crush embedded sleeve is press-fitted into the small rear hole, the limit gasket is press-fitted into the large front hole, and the embedded internal thread sleeve is press-fitted into the second inner sleeve fixing hole.

[0018] The limit bracket of the present invention is made of a lightweight material, such as nylon. The present invention preferably uses a limit bracket made of PA66-LGF50%. When installing it on the vehicle longitudinal beam using bolts, an anti-crush embedded sleeve is required to support the bolt pre-tightening force to prevent the limit bracket from being crushed by the bolts. The limit gasket is press-fitted and fixed horizontally between two adjacent supporting vertical plates, which can prevent the limit bracket from moving laterally and improve the strength of the limit bracket.

[0019] Further, the buffer block assembly includes a buffer block and a fixing bolt. The buffer block is provided with a buffer block threaded through hole. The screw of the fixing bolt is threadedly connected upward through the buffer block threaded through hole and then threadedly fixed inside the embedded internal thread sleeve.

[0020] The buffer block of the present invention is a component in which a metal plate is vulcanized with rubber. The buffer block is provided with buffer block threaded through holes, and the number of threaded connection through holes is at least one. For better fixing effect, the present invention takes the example of respectively arranging a threaded through hole at the left and right ends of the buffer block. The number of fixing bolts matches the number of threaded through holes. The bolt head of the fixing bolt faces downward and the screw rod passes upward through the threaded through hole and is threadedly fixedly connected inside the embedded internal thread sleeve. The embedded internal thread sleeve can enhance the connection strength and support the bolt pre-tightening force to prevent the limit bracket from being crushed by the bolt.

[0021] Further, the buffer block assembly further includes at least one stroke lateral limit gasket. The stroke lateral limit gasket is provided with gasket threaded connection holes that match the position and size of the buffer block threaded through holes. The fixing bolts sequentially pass through the buffer block threaded through holes and the gasket threaded connection holes and are then threadedly fixedly connected to the embedded internal thread sleeve. The stroke lateral limit gasket is clamped between the buffer block and the buffer connection bottom plate.

[0022] The buffer block assembly further includes a stroke lateral limit gasket. The function of the stroke lateral limit gasket is to adjust the height of the air suspension limit assembly, and thus adjust the bouncing stroke of the air suspension. The thickness of the stroke lateral limit gasket can be set according to actual production needs. In the present invention, it is set to 10 mm, which can meet the needs of most automobile models, and the versatility is improved.

[0023] Further, a stepped structure is provided on the front end face of the suspension connection back plate. The upper part and the middle part of the stepped structure are provided with first inner sleeve fixing holes on the vertical side wall end faces.

[0024] The suspension connection back plate of the present invention has a certain thickness and is not necessarily a flat plate structure. A stepped structure is provided on the front end face of the suspension connection back plate, that is, the upper and lower thicknesses of the suspension connection back plate are different. First inner sleeve fixing holes are opened on the vertical end faces of the steps. The depths of the first inner sleeve fixing holes at different heights are different. The length of the anti-crushing embedded sleeve matches the depth of the corresponding first inner sleeve fixing hole. Such a design can increase the connection firmness between the limit bracket and the vehicle longitudinal beam, and can also disperse the force borne by the limit bracket to multiple points, making the force received by the longitudinal beam more uniform, reducing the situation of excessive local stress, improving the reliability and stability of the connection, and extending the service life of the bracket and the longitudinal beam. The installation position of the limit bracket is selected according to the structure of the vehicle model, and most of them will be installed on the vehicle longitudinal beam.

[0025] Further, weight reduction grooves are provided on the back of the suspension connection back plate of the limit bracket and the lower bottom surface of the buffer connection bottom plate.

[0026] The present invention further provides weight-reducing grooves on the limit bracket. The rear end face of the suspension connection back plate of the present invention is evenly provided with a plurality of weight-reducing grooves, and at the same time, a plurality of weight-reducing grooves are also evenly arranged on the lower end face of the buffer connection bottom plate. The position and shape of the weight-reducing grooves are not unique, and no examples are given here. The ultimate goal is to achieve lightweight. In order to ensure lightweight without affecting the firmness of the limit bracket fixation, the front end face and the rear end face of the lower part of the beam connection back plate of the present invention are provided with a plurality of reinforcing plates, and the specific positions and shapes meet the actual needs.

[0027] Further, the limit bracket is made of a lightweight material, and the material of the lightweight material is PA66-LGF50%.

[0028] PA66-LGF50% is a composite material with polyamide 66 (PA66) as the matrix and 50% long glass fiber (LGF) added. It has the advantages of high strength and high rigidity, good dimensional stability, excellent heat resistance, good wear resistance, excellent electrical insulation performance, etc. It is particularly outstanding in terms of lightweight. The present invention preferably uses PA66-LGF50% as the manufacturing material of the limit bracket. The present invention adopts a nylon, metal, and rubber composite structure, which can achieve a 50% weight reduction, and the reliability is the same as that of the metal structure.

[0029] An air suspension includes the air suspension limit assembly described above.

[0030] The number of air suspension limit assemblies of the air suspension is at least one, and the specific number matches the structural requirements of different vehicle models.

[0031] A vehicle includes the air suspension described above, and also includes a vehicle longitudinal beam, a drive axle, and limit bracket mounting bolts. The vehicle longitudinal beam is provided with threaded mounting holes. The number of limit bracket mounting bolts, the number of first inner sleeve fixing holes on the limit bracket, and the number of threaded mounting holes match. The limit bracket mounting bolts sequentially pass through the limit gasket and the anti-crush inner sleeve and are then threadedly fixed in the threaded mounting holes of the vehicle longitudinal beam. The buffer block can be in limit contact directly above the drive axle.

[0032] The air suspension limit assembly of the present invention is threadedly fixed and installed on the vehicle longitudinal beam, and the installation quantity of the air suspension limit assembly meets the actual required quantity.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The structure of the limit bracket assembly of the present invention and the PA66-LGF50% material of the limit bracket enable the limit bracket assembly of the present invention to achieve the goal of 50% weight reduction compared with the commonly used metal limit brackets at present;

[0035] 2. A travel lateral limiting gasket is provided between the limiting bracket and the buffer block assembly of the present invention. By fixing the thickness of the travel lateral limiting gasket, the installation quantity of the travel lateral limiting gasket can be increased or decreased according to the height requirements of different vehicle models, thereby improving the versatility of the air suspension limiting assembly of the present invention.

[0036] 3. The buffer block assembly of the present invention is fixedly connected to the bottom of the limiting bracket by threads. When wear occurs, it can be replaced in a timely manner, with simple and convenient operation, reducing the maintenance cost and saving the maintenance time. Brief Description of the Drawings

[0037] Figure 1 is a schematic structural view of the air suspension limiting assembly of the present invention without the travel lateral limiting gasket;

[0038] Figure 2 is a schematic bottom view of the limiting bracket of the present invention;

[0039] Figure 3 is a rear view of the air suspension limiting assembly of the present invention without the travel lateral limiting gasket;

[0040] Figure 4 is a schematic structural view of the air suspension limiting assembly of the present invention with the travel lateral limiting gasket;

[0041] Figure 5 is a schematic rear view of the air suspension limiting assembly of the present invention with the travel lateral limiting gasket;

[0042] Figure 6 is a schematic part view of the air suspension limiting assembly of the present invention with the travel lateral limiting gasket;

[0043] Figure 7 is a schematic bottom view of the air suspension limiting assembly of the present invention;

[0044] Figure 8 is a schematic part structure view of the buffer block assembly of the present invention with the travel lateral limiting gasket;

[0045] Figure 9 is a schematic position view of the air suspension limiting assembly of the present invention fixedly installed on the vehicle longitudinal beam.

[0046] In the figure:

[0047] 1. Composite material limiting bracket assembly; 1.1. Limiting bracket; 1.11. Support vertical plate; 1.12.

[0048] Suspension connection back plate; 1.13. Buffer connection bottom plate; 1.14. First inner sleeve fixing hole;

[0049] 1.141. Front large hole; 1.142. Rear small hole; 1.15. Second inner sleeve fixing hole; 1.16.

[0050] Step structure; 1.17. Weight reduction groove; 1.2. First fastening auxiliary component; 1.21. Limit gasket; 1.22. Anti-crushing embedded sleeve; 1.3. Second fastening auxiliary component; 1.31. Embedded internal thread sleeve; 2. Buffer block assembly; 2.1. Buffer block; 2.11. Buffer block threaded through hole;

[0051] 2.2. Fixing bolt; 2.3. Travel lateral limit gasket; 2.31. Gasket threaded connection hole; 3.

[0052] Automobile longitudinal beam; 4. Driving axle; 5. Limit bracket mounting bolt. Specific implementation mode

[0053] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of 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 scope of protection of the present invention.

[0054] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "said" used in the present invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. "Plural" generally includes at least two.

[0055] It should be noted that the orientation or positional relationship indicated by the terms "front", "rear", "inner", "outer", etc. in the present invention is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0056] It should be particularly noted that the symbols and / or numbers in the specification that are not marked in the drawings description are not drawing reference numerals.

[0057] For the embodiments provided by the present invention, namely the embodiments of an air suspension limit assembly, an air suspension and an automobile, the following is combined with Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 andFigure 9 A detailed description will be given.

[0058] Example 1:

[0059] As shown in Figure 1 a kind of air suspension limit assembly, which includes a limit bracket assembly 1 and a buffer block assembly 2. The limit bracket assembly 1 includes a limit bracket 1.1, a first fastening auxiliary component 1.2 and a second fastening auxiliary component 1.3. The first fastening auxiliary component 1.2 and the second fastening auxiliary component 1.3 are respectively limited and fixed on the limit bracket 1.1, and the buffer block assembly 2 is detachably fixed to the bottom of the limit bracket assembly 1.

[0060] The limit bracket 1.1 includes three support vertical plates 1.11, a suspension connection back plate 1.12 and a buffer connection bottom plate 1.13. The buffer connection bottom plate 1.13 is horizontally and transversely arranged. The suspension connection back plate 1.12 is vertically and fixedly connected to the rear edge of the upper end face of the buffer connection bottom plate 1.13 in a matching manner to form an L-shaped structure. A plurality of support vertical plates 1.11 are vertically and fixedly arranged at intervals in parallel on the upper end face of the buffer connection bottom plate 1.13, and their rear side walls are vertically and fixedly connected to the front end face of the suspension connection back plate 1.12. A first inner sleeve fixing hole 1.14 is provided on the suspension connection back plate 1.12 at the rear end of two adjacent support vertical plates 1.11. As shown in Figure 2 a second inner sleeve fixing hole 1.15 is provided on the buffer connection bottom plate 1.13. The first fastening auxiliary component 1.2 is limited in the first inner sleeve fixing hole 1.14 by interference fit, and the second fastening auxiliary component 1.3 is limited in the second inner sleeve fixing hole 1.15 by interference fit.

[0061] The first fastening auxiliary component 1.2 includes a limit gasket 1.21 and an anti-crushing embedded sleeve 1.22. The second fastening auxiliary component 1.3 includes an embedded internal thread sleeve 1.31. The limit gasket 1.21 is an oblong annular gasket. The first inner sleeve fixing hole 1.14 is a stepped through hole, and the stepped through hole includes a front large hole 1.141 and a rear small hole 1.142. The anti-crushing embedded sleeve 1.22 is embedded in the rear small hole 1.142 by interference fit, the limit gasket 1.21 is embedded in the front large hole 1.141 by interference fit, and the embedded internal thread sleeve 1.31 is embedded in the second inner sleeve fixing hole 1.15 by interference fit.

[0062] The buffer block assembly 2 includes a buffer block 2.1 and a fixing bolt 2.2. The buffer block 2.1 is provided with a buffer block threaded through hole 2.11. The screw of the fixing bolt 2.2 is threadedly connected to the buffer block threaded through hole 2.11 upward and then threadedly fixed in the embedded internal thread sleeve 1.31.

[0063] On the front end face of the suspension connection back plate 1.12, there is a stepped structure 1.16, and first inner sleeve fixing holes 1.14 are provided on the vertical side wall surfaces of the upper and middle parts of the stepped structure 1.16.

[0064] See Figure 2 , Figure 3 As shown in the figure, weight-reducing grooves 1.17 are provided on the back surface of the suspension connection back plate 1.12 of the limit bracket 1.1 and on the lower bottom surface of the buffer connection bottom plate 1.13.

[0065] Embodiment 2:

[0066] See Figure 1 As shown in the figure, an air suspension limit assembly includes a limit bracket assembly 1 and a buffer block assembly 2. The limit bracket assembly 1 includes a limit bracket 1.1, a first fastening auxiliary component 1.2, and a second fastening auxiliary component 1.3. The first fastening auxiliary component 1.2 and the second fastening auxiliary component 1.3 are respectively limited and fixed on the limit bracket 1.1, and the buffer block assembly 2 is detachably fixed to the bottom of the limit bracket assembly 1.

[0067] The limit bracket 1.1 is made of a lightweight material, and the material of the lightweight material is PA66-LGF50%.

[0068] The limit bracket 1.1 includes three support vertical plates 1.11, a suspension connection back plate 1.12, and a buffer connection bottom plate 1.13. The buffer connection bottom plate 1.13 is horizontally and transversely arranged. The suspension connection back plate 1.12 is vertically and fixedly connected to the rear edge of the upper end face of the buffer connection bottom plate 1.13 in a matching manner to form an L-shaped structure. A plurality of support vertical plates 1.11 are vertically and fixedly spaced in parallel on the upper end face of the buffer connection bottom plate 1.13, and their rear side walls are vertically and fixedly connected to the front end face of the suspension connection back plate 1.12. First inner sleeve fixing holes 1.14 are provided on the suspension connection back plate 1.12 at the rear ends of two adjacent support vertical plates 1.11. See Figure 2 As shown in the figure, second inner sleeve fixing holes 1.15 are provided on the buffer connection bottom plate 1.13. The first fastening auxiliary component 1.2 is press-fitted and limited in the first inner sleeve fixing hole 1.14, and the second fastening auxiliary component 1.3 is press-fitted and limited in the second inner sleeve fixing hole 1.15.

[0069] The first fastening auxiliary assembly 1.2 includes a limit gasket 1.21 and an anti-crushing embedded sleeve 1.22, and the second fastening auxiliary assembly 1.3 includes an embedded internal thread sleeve 1.31. The limit gasket 1.21 is an oblong annular gasket. The first inner sleeve fixing hole 1.14 is a stepped through hole, which includes a front large hole 1.141 and a rear small hole 1.142. The anti-crushing embedded sleeve 1.22 is press-fitted into the rear small hole 1.142, and the limit gasket 1.21 is press-fitted into the front large hole 1.141. The embedded internal thread sleeve 1.31 is press-fitted into the second inner sleeve fixing hole 1.15.

[0070] The buffer block assembly 2 includes a buffer block 2.1 and a fixing bolt 2.2. The buffer block 2.1 is provided with a buffer block threaded through hole 2.11. The screw of the fixing bolt 2.2 is threadedly connected upward to the buffer block threaded through hole 2.11 and passes through and is threadedly fixed in the embedded internal thread sleeve 1.31.

[0071] A stepped structure 1.16 is provided on the front end face of the suspension connection back plate 1.12. The first inner sleeve fixing holes 1.14 are provided on the vertical side walls of the upper and middle parts of the stepped structure 1.16.

[0072] See Figure 2 、 Figure 3 As shown, weight reduction grooves 1.17 are provided on the back of the suspension connection back plate 1.12 and the bottom surface of the buffer connection bottom plate 1.13 of the limit bracket 1.1.

[0073] Embodiment 3:

[0074] See Figure 4 、 Figure 6 As shown, an air suspension limit assembly includes a limit bracket assembly 1 and a buffer block assembly 2. The limit bracket assembly 1 includes a limit bracket 1.1, a first fastening auxiliary assembly 1.2 and a second fastening auxiliary assembly 1.3. The first fastening auxiliary assembly 1.2 and the second fastening auxiliary assembly 1.3 are respectively limited and fixed on the limit bracket 1.1. The buffer block assembly 2 is detachably fixed to the bottom of the limit bracket assembly 1.

[0075] The limit bracket 1.1 includes three support vertical plates 1.11, a suspension connection back plate 1.12 and a buffer connection bottom plate 1.13. The buffer connection bottom plate 1.13 is horizontally and transversely arranged. The suspension connection back plate 1.12 is vertically and fixedly connected to the rear edge of the upper end face of the buffer connection bottom plate 1.13 in a matching manner to form an L-shaped structure. A plurality of support vertical plates 1.11 are vertically and fixedly spaced in parallel on the upper end face of the buffer connection bottom plate 1.13, and their rear side walls are vertically and fixedly connected to the front end face of the suspension connection back plate 1.12. The first inner sleeve fixing holes 1.14 are provided on the suspension connection back plate 1.12 at the rear ends of two adjacent support vertical plates 1.11. See Figure 2As shown, the buffer connection bottom plate 1.13 is provided with a second inner sleeve fixing hole 1.15. The first fastening auxiliary component 1.2 is in interference fit and limited in the first inner sleeve fixing hole 1.14, and the second fastening auxiliary component 1.3 is in interference fit and limited in the second inner sleeve fixing hole 1.15.

[0076] The first fastening auxiliary component 1.2 includes a limit gasket 1.21 and an anti-crushing embedded sleeve 1.22. The second fastening auxiliary component 1.3 includes an embedded internal thread sleeve 1.31. The limit gasket 1.21 is an oblong annular gasket. The first inner sleeve fixing hole 1.14 is a stepped through hole, which includes a front large hole 1.141 and a rear small hole 1.142. The anti-crushing embedded sleeve 1.22 is in interference fit and embedded in the rear small hole 1.142, and the limit gasket 1.21 is in interference fit and embedded in the front large hole 1.141. The embedded internal thread sleeve 1.31 is in interference fit and embedded in the second inner sleeve fixing hole 1.15.

[0077] See Figure 7 、 Figure 8 As shown, the buffer block assembly 2 includes a buffer block 2.1 and a fixing bolt 2.2. The buffer block 2.1 is provided with a buffer block threaded through hole 2.11. The screw rod of the fixing bolt 2.2 is threadedly connected to the buffer block threaded through hole 2.11 upward and then threadedly fixed in the embedded internal thread sleeve 1.31 after passing through.

[0078] See Figure 8 As shown, the buffer block assembly 2 further includes two stroke lateral limit gaskets 2.3. The stroke lateral limit gaskets 2.3 are provided with gasket threaded connection holes 2.31 that match the position and size of the buffer block threaded through hole 2.11. The fixing bolt 2.2 passes through the buffer block threaded through hole 2.11 and the gasket threaded connection hole 2.31 in sequence and then is threadedly fixedly connected in the embedded internal thread sleeve 1.31. The stroke lateral limit gaskets 2.3 are clamped between the buffer block 2.1 and the buffer connection bottom plate 1.13.

[0079] On the front end face of the suspension connection back plate 1.12, there is a stepped structure 1.16, and the first inner sleeve fixing holes 1.14 are provided on the vertical side wall surfaces of the upper and middle parts of the stepped structure 1.16.

[0080] See Figure 2 、 Figure 5 As shown, on the back of the suspension connection back plate 1.12 and the lower bottom surface of the buffer connection bottom plate 1.13 of the limit bracket 1.1, there are weight reduction grooves 1.17.

[0081] Example 4:

[0082] See Figure 4 、 Figure 6As shown, an air suspension limit assembly includes a limit bracket assembly 1 and a buffer block assembly 2. The limit bracket assembly 1 includes a limit bracket 1.1, a first fastening auxiliary component 1.2, and a second fastening auxiliary component 1.3. The first fastening auxiliary component 1.2 and the second fastening auxiliary component 1.3 are respectively limited and fixed on the limit bracket 1.1, and the buffer block assembly 2 is detachably fixed to the bottom of the limit bracket assembly 1.

[0083] The limit bracket 1.1 is made of a lightweight material, and the material of the lightweight material is PA66-LGF50%.

[0084] The limit bracket 1.1 includes three support vertical plates 1.11, a suspension connection back plate 1.12, and a buffer connection bottom plate 1.13. The buffer connection bottom plate 1.13 is horizontally and transversely arranged. The suspension connection back plate 1.12 is vertically and fixedly connected to the rear edge of the upper end face of the buffer connection bottom plate 1.13 to form an L-shaped structure. A plurality of support vertical plates 1.11 are vertically and fixedly spaced in parallel on the upper end face of the buffer connection bottom plate 1.13, and their rear side walls are vertically and fixedly connected to the front end face of the suspension connection back plate 1.12. A first inner sleeve fixing hole 1.14 is provided on the suspension connection back plate 1.12 at the rear ends of two adjacent support vertical plates 1.11. See Figure 2 As shown, a second inner sleeve fixing hole 1.15 is provided on the buffer connection bottom plate 1.13. The first fastening auxiliary component 1.2 is press-fitted and limited in the first inner sleeve fixing hole 1.14, and the second fastening auxiliary component 1.3 is press-fitted and limited in the second inner sleeve fixing hole 1.15.

[0085] The first fastening auxiliary component 1.2 includes a limit gasket 1.21 and an anti-crushing embedded sleeve 1.22. The second fastening auxiliary component 1.3 includes an embedded internal thread sleeve 1.31. The limit gasket 1.21 is an oblong annular gasket. The first inner sleeve fixing hole 1.14 is a stepped through hole, and the stepped through hole includes a front large hole 1.141 and a rear small hole 1.142. The anti-crushing embedded sleeve 1.22 is press-fitted and embedded in the rear small hole 1.142, the limit gasket 1.21 is press-fitted and embedded in the front large hole 1.141, and the embedded internal thread sleeve 1.31 is press-fitted and embedded in the second inner sleeve fixing hole 1.15.

[0086] See Figure 7 、 Figure 8 As shown, the buffer block assembly 2 includes a buffer block 2.1 and a fixing bolt 2.2. The buffer block 2.1 is provided with a buffer block threaded through hole 2.11. The screw of the fixing bolt 2.2 is threadedly connected to the buffer block threaded through hole 2.11 upward and then threadedly fixed in the embedded internal thread sleeve 1.31 after passing through.

[0087] See Figure 7As shown, the buffer block assembly 2 further includes two stroke lateral limit gaskets 2.3. The stroke lateral limit gaskets 2.3 are provided with gasket threaded connection holes 2.31 that match the position and size of the buffer block threaded through holes 2.11. The fixing bolts 2.2 pass through the buffer block threaded through holes 2.11 and the gasket threaded connection holes 2.31 in sequence and are threadedly fixedly connected to the embedded internal thread sleeve 1.31. The stroke lateral limit gaskets 2.3 are clamped between the buffer block 2.1 and the buffer connection bottom plate 1.13.

[0088] On the front end face of the suspension connection back plate 1.12, a stepped structure 1.16 is provided. First inner sleeve fixing holes 1.14 are provided on the vertical side wall surfaces of the upper and middle parts of the stepped structure 1.16.

[0089] See Figure 2 、 Figure 5 As shown, weight reduction grooves 1.17 are provided on the back surface of the suspension connection back plate 1.12 of the limit bracket 1.1 and the lower bottom surface of the buffer connection bottom plate 1.13.

[0090] Embodiment 5:

[0091] The present invention further provides an air suspension, including the air suspension limit assembly as described above. The number of the air suspension limit assemblies is provided according to the actual requirements of the vehicle model.

[0092] Embodiment 6:

[0093] The present invention further provides a vehicle, including the air suspension as described above. See Figure 9 As shown, it further includes a vehicle longitudinal beam 3, a drive axle 4, and limit bracket mounting bolts 5. Threaded mounting holes are provided on the vehicle longitudinal beam 3. The number of the limit bracket mounting bolts 5, the number of the first inner sleeve fixing holes 1.14 on the limit bracket 1.1, and the number of the threaded mounting holes match. The limit bracket mounting bolts 5 pass through the limit gaskets 1.21 and the anti-crush embedded sleeves 1.22 in sequence and are threadedly fixed in the threaded mounting holes of the vehicle longitudinal beam 3. The buffer block 2.1 can be in limit contact directly above the drive axle 4.

[0094] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air suspension limiter assembly, characterized in that: The invention comprises a limit bracket assembly (1) and a buffer block assembly (2); the limit bracket assembly (1) comprises a limit bracket (1.1), a first fastening auxiliary component (1.2) and a second fastening auxiliary component (1.3); the first fastening auxiliary component (1.2) and the second fastening auxiliary component (1.3) are respectively fixed on the limit bracket (1.1) in a limit manner; and the buffer block assembly (2) is detachably fixed to the bottom of the limit bracket assembly (1).

2. The air suspension limiter assembly according to claim 1, characterized in that: The limit bracket (1.1) comprises a plurality of support vertical plates (1.11), a suspension connection back plate (1.12) and a buffer connection bottom plate (1.13); the buffer connection bottom plate (1.13) is arranged horizontally and transversely; the suspension connection back plate (1.12) is matched and vertically fixedly connected to the rear end edge of the upper end surface of the buffer connection bottom plate (1.13) to form an L-shaped structure; the plurality of support vertical plates (1.11) are vertically fixed to the upper end surface of the buffer connection bottom plate (1.13) at parallel longitudinal intervals, and their rear side walls are vertically fixedly connected to the rear end surface of the buffer connection bottom plate (1.13). The suspension connecting back plate (1.12) is fixedly connected to the front end surface of the suspension connecting back plate (1.12), the suspension connecting back plate (1.12) at the rear ends of two adjacent supporting upright plates (1.11) is provided with a first inner sleeve fixing hole (1.14), the buffer connecting bottom plate (1.13) is provided with a second inner sleeve fixing hole (1.15), the first fastening auxiliary component (1.2) is limited by interference fit to be located in the first inner sleeve fixing hole (1.14), and the second fastening auxiliary component (1.3) is limited by interference fit to be located in the second inner sleeve fixing hole (1.15).

3. The air suspension limiter assembly according to claim 2, characterized in that: The first fastening auxiliary component (1.2) comprises a limiting gasket (1.21) and an anti-crushing inner nested tube (1.22); the second fastening auxiliary component (1.3) comprises an embedded internal threaded sleeve (1.31); the limiting gasket (1.21) is an oblong annular gasket; the first inner sleeve fixing hole (1.14) is a step structure through hole; the step structure through hole comprises a front end large hole (1.141) and a rear end small hole (1.142); the anti-crushing inner nested tube (1.22) is interference fit embedded in the rear end small hole (1.142); the limiting gasket (1.21) is interference fit embedded in the front end large hole (1.141); and the embedded internal threaded sleeve (1.31) is interference fit embedded in the second inner sleeve fixing hole (1.15).

4. The air suspension limiter assembly according to claim 3, characterized in that: The buffer block assembly (2) comprises a buffer block (2.1) and a fixing bolt (2.2); the buffer block (2.1) is provided with a buffer block threaded through hole (2.11); the screw rod of the fixing bolt (2.2) is threadedly connected to the buffer block threaded through hole (2.11) upwards and is threadedly fixed in the embedded internal threaded sleeve (1.31) after passing through.

5. The air suspension limiter assembly according to claim 4, characterized in that: The buffer block assembly (2) further comprises at least one stroke transverse limit washer (2.3), the stroke transverse limit washer (2.3) being provided with a washer threaded connection hole (2.31) whose position and size match the buffer block threaded through hole (2.11), the fixing bolt (2.2) successively passes through the buffer block threaded through hole (2.11) and the washer threaded connection hole (2.31) and then is threadedly fixedly connected in the embedded internal threaded sleeve (1.31), and the stroke transverse limit washer (2.3) is clamped between the buffer block (2.1) and the buffer connection bottom plate (1.13).

6. The air suspension limiter assembly according to claim 4 or 5, characterized in that: A step structure (1.16) is provided on the front end surface of the suspension connection back plate (1.12), and first inner sleeve fixing holes (1.14) are provided on the upper and middle vertical side wall surfaces of the step structure (1.16).

7. The air suspension limiter assembly according to claim 6, characterized in that: The back surface of the suspension connection back plate (1.12) of the position-limiting bracket (1.1) and the lower bottom surface of the buffer connection bottom plate (1.13) are both provided with weight-reducing grooves (1.17).

8. The air suspension limiter assembly according to claim 7, characterized in that: The limiting bracket (1.1) is made of a lightweight material, and the material of the lightweight material is PA66-LGF50%.

9. An air suspension, characterized in that: It comprises the air suspension limiting assembly as described in any one of claims 1 to 8.

10. An automobile, characterized in that: The air suspension comprises the air suspension as claimed in claim 9, and also comprises a vehicle longitudinal beam (3), a driving axle (4) and a limit bracket mounting bolt (5), wherein the vehicle longitudinal beam (3) is provided with a threaded mounting hole, and the number of the limit bracket mounting bolts (5), the number of the first inner sleeve fixing holes (1.14) on the limit bracket (1.1) and the number of the threaded mounting holes match, and the limit bracket mounting bolts (5) are threadedly fixed in the threaded mounting hole of the vehicle longitudinal beam (3) after passing through the limit gasket (1.21) and the anti-crush inner sleeve (1.22) in sequence, and the buffer block (2.1) can be limitedly contacted just above the driving axle (4).

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