Rubber air cushion suspension device

Abstract

The utility model provides a rubber air cushion suspension device, including support frame and symmetrical setting in the bottom of support frame's a plurality of air cushions, the top of support frame is provided with the object platform of loading, the bottom of support frame is provided with a plurality of storage groove, the air cushion sets up in storage groove, the air cushion includes metal framework and annular air bag of vulcanization in the bottom of metal framework, the vulcanization junction of metal framework and air bag is provided with air inlet and air outlet, be provided with the exhaust hole of air bag axle center in the metal framework, be provided with the air inlet pipeline of intercommunication with air inlet and the gas pipeline of connecting air outlet and exhaust hole in the support frame, air bag only sets up air inlet and air outlet in the vulcanization junction with framework, air bag has continuous, complete pressure -bearing housing, avoided the stress concentration of local, can bear higher internal air pressure, has guaranteed the stability of rubber air cushion suspension device under high bearing capacity scene.

Description

Technical Field

[0001] This utility model relates to the field of suspension air cushion technology, and in particular to a rubber air cushion suspension device. Background Technology

[0002] A rubber air cushion suspension device is a device used on smooth surfaces that uses compressed air to form an air film to lift and move heavy objects. It is typically used for moving heavy items and precision equipment.

[0003] Small-sized rubber air cushion suspension devices typically employ a semi-airbag structure, where the airbag is vulcanized to the bottom of a metal frame via a flexible skirt, such as the air cushion suspension device with adjustable air outlet diameter disclosed in CN112124291B. This structure can meet the requirements for small-sized, low-load-bearing applications (hundreds of kilograms or several tons). However, when the application scenario expands to large-sized (over one meter in diameter) and high-load-bearing (tens of tons) applications, the shortcomings of this type of airbag structure in terms of lateral stability and structural rigidity are amplified, making it unable to meet the high rigidity and high stability required for suspension air cushions. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a rubber air cushion suspension device, including a support frame and multiple air cushions symmetrically arranged at the bottom of the support frame. A loading platform is provided at the top of the support frame, and multiple storage slots are provided at the bottom of the support frame. The air cushions are disposed in the storage slots. Each air cushion includes a metal frame and an annular air bladder vulcanized at the bottom of the metal frame. An air inlet and an air outlet are provided at the vulcanized connection between the metal frame and the air bladder. An exhaust port located at the axis of the air bladder is provided in the metal frame. An air inlet pipe communicating with the air inlet and an air supply pipe connecting the air outlet and the exhaust port are provided in the support frame.

[0005] Specifically, the storage tank is equipped with air nozzles corresponding to the air inlet, air outlet and exhaust port, and the top of the metal frame is vulcanized with a rubber sealing layer corresponding to the air inlet, air outlet and exhaust port.

[0006] Specifically, the airbag includes a rubber layer and a reinforcing fabric vulcanized into the rubber layer.

[0007] Specifically, the skeleton fabric is nylon.

[0008] Specifically, the outer ring of the airbag is an arc surface, the inner ring of the airbag has a seal, and a stitching line is provided along the seal to sew the rubber layers on the upper and lower sides of the airbag to the skeleton fabric.

[0009] Specifically, the skeleton fabric includes a first skeleton fabric and a second skeleton fabric arranged in a ring shape on the upper and lower sides of the airbag, as well as multiple third skeleton fabrics wrapped around the circumference. The third skeleton fabric is long and has a slanted edge cut at a 45° angle.

[0010] Specifically, the metal frame has multiple through holes along its edge, and threaded holes are provided in the storage groove corresponding to the through holes. The air cushion is fixed to the bottom of the support frame by bolts.

[0011] Specifically, the height of the storage tank is higher than the height of the uninflated suspension air cushion, but lower than the height of the inflated suspension air cushion.

[0012] Specifically, the gas pipeline is equipped with a solenoid valve and a pressure sensor.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model provides a rubber air cushion suspension device, in which the complete airbag is vulcanized to the bottom of the metal frame. The airbag is provided with air inlet and air outlet only at the vulcanization connection with the frame. The airbag has a continuous and complete pressure-bearing shell, which avoids local stress concentration and can withstand higher internal air pressure, ensuring the stability of the rubber air cushion suspension device in high load-bearing scenarios. The maximum load-bearing pressure of a single airbag can reach 30 tons.

[0015] 2. The airbag has a rubber layer and a reinforcing fabric vulcanized into the rubber layer. The reinforcing fabric improves the tensile strength and load-bearing capacity of the airbag. The outer ring of the airbag is bound with a long strip of obliquely cut at a 45° angle. When the reinforcing fabric is subjected to force during inflation, the force is evenly distributed to a large number of warp and weft yarns, avoiding stress concentration, thereby greatly improving the durability and tear resistance of the binding. The inner ring of the airbag is equipped with a seam along the seal to sew the rubber layer and the reinforcing fabric on the upper and lower sides of the airbag, ensuring the overall strength of the sealing structure. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the present invention;

[0017] Figure 2 This is a schematic diagram of the bottom structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the airbag structure of this utility model;

[0019] Figure 4 This is an enlarged view of part A of this utility model.

[0020] Reference numerals: 1. Support frame; 11. Storage tank; 12. Air inlet pipe; 13. Air delivery pipe; 14. Air pipe; 2. Metal frame; 21. Air inlet; 22. Air outlet; 23. Exhaust outlet; 24. Through hole; 25. Rubber sealing layer; 3. Airbag; 31. Rubber layer; 32. Frame fabric; 33. Sealing. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-4 As shown, this utility model provides a rubber air cushion suspension device, including a support frame 1 and multiple air cushions symmetrically arranged at the bottom of the support frame 1. The air cushion includes a metal frame 2 and an air bladder 3 vulcanized at the bottom of the metal frame 2. High-pressure gas is injected into the air bladder 3 through the air inlet pipe 12 of the support frame 1, and discharged from the exhaust hole 23 located at the axis of the air bladder 3 through the air delivery pipe 13. A uniform air film is formed between the air cushion and the ground. The stress generated by the air pressure inside the integrated air bladder 3 structure can be evenly distributed throughout the air bladder wall and the vulcanized connection with the metal frame 2, avoiding local stress concentration and meeting the requirements of high rigidity and high stability of large-size suspension air cushions.

[0024] The top of the support frame 1 is equipped with a loading platform for carrying items to be transported. The bottom of the support frame 1 is equipped with multiple storage slots 11, each containing an air cushion. The height of the storage slot 11 is higher than the height of the air cushion in its uninflated state and lower than the height of the air cushion in its inflated state. When the air cushion is not in use, it can be deflated and stored in the storage slot 11.

[0025] Multiple air cushions are included, comprising a metal frame 2 and an annular airbag 3 vulcanized to the bottom of the metal frame 2. These are symmetrically installed at the bottom of the support frame 1. Each rubber air cushion suspension device preferably includes 4, 6, or 8 air cushions. An air inlet 21 and an air outlet 22 are provided at the vulcanized connection between the metal frame 2 and the airbag 3. An exhaust port 23 is located at the axis of the airbag 3 within the metal frame 2. Corresponding to the position of the air inlet 21, an air inlet pipe 12 communicating with the air inlet 21 is provided in the support frame 1. The other end of the air inlet pipe 12 is connected to the side wall of the support frame 1 and connected to an air pump via an air pipe 14 to inflate the airbag 3. Corresponding to the positions of the air outlet 22 and the exhaust port 23, an air supply pipe 13 is provided in the support frame 1 to connect the air outlet 22 and the exhaust port 23. The high-pressure air injected into the airbag 3 is transported to the axis of the airbag 3 through the air supply pipe 13 and discharged from the axis of the airbag 3, so that the high-pressure air is evenly diffused to the surroundings, forming a uniform air film at the edge of the air cushion, lifting the heavy object and greatly reducing the friction with the ground.

[0026] The airbag 3 is an integral structure with a continuous and complete pressure-bearing shell. When bearing heavy objects, the stress generated by the internal air pressure can be evenly distributed throughout the airbag wall and at the vulcanized connection with the metal frame 2, avoiding localized stress concentration and enabling it to withstand higher internal air pressure. The airbag 3 includes a rubber layer 31 and a skeleton fabric 32. The skeleton fabric 32 is vulcanized into the rubber layer 31. The skeleton fabric 32 is preferably made of nylon. The skeleton fabric 32 improves the tensile strength and load-bearing capacity of the airbag 3 and restricts the expansion shape of the airbag 3. Specifically, the skeleton fabric 32 includes a first and second skeleton fabric in the shape of two annular rings on the upper and lower surfaces of the airbag 3, and three third skeleton fabrics along the outer circumferential edge. The third skeleton fabric is long and trapezoidal in shape, with a 45° oblique cut edge. When the third skeleton fabric is subjected to force during inflation, the force is evenly distributed to a large number of warp and weft yarns, avoiding stress concentration, thereby greatly improving the durability and tear resistance of the edge binding.

[0027] The outer ring of the airbag 3 is an arc surface, and the inner ring has a seal 33. Along the seal 33, stitching lines are provided to connect the rubber layers 31 and the skeleton fabric 32 on both sides of the airbag 3. When sealing the airbag 3, adhesive is first applied along the vulcanization area of ​​the seal 33, and then the inner hole of the airbag 3 is circumferentially sewn through the stitching lines. Thin adhesive strips are then applied along the stitching lines to seal the needle holes, and finally, vulcanization is performed using a vulcanizing machine. The combination of sewing and vulcanization at the seal 33 ensures the overall strength of the seal 33 structure.

[0028] The metal frame 2 has multiple through holes 24 along its edge, and corresponding threaded holes are provided in the storage tank 11. The air cushion is fixed to the bottom of the support frame 1 by bolts. Air nozzles are provided in the storage tank 11 corresponding to the air inlet 21, air outlet 22, and air exhaust 23. A rubber sealing layer 25 is vulcanized on the top of the metal frame 2 at the air inlet 21, air outlet 22, and air exhaust 23 to seal the gap between the air cushion and the support frame 1 and prevent high-pressure air from leaking when it is transmitted between the support frame 1 and the airbag 3.

[0029] Furthermore, in some embodiments, the gas supply line 13 is equipped with a solenoid valve and a pressure sensor. The solenoid valve and pressure sensor are electrically connected to the controller and are used to adjust the exhaust volume. The solenoid valve works with the air pump to control the pressure difference inside and outside the airbag 3, and the working pressure can be quickly established by controlling the solenoid valve to close during gas injection.

[0030] When in use, place the items to be transported on the loading platform, install the air pipe 14 at the air inlet pipe 12, use the air pump to inject high-pressure air into the airbag 3 through the air inlet pipe 12, and then spray it out from the axis of the airbag 3 through the air delivery pipe 13, so that the high-pressure air is evenly diffused in all directions, forming a uniform air film at the edge of the air cushion.

[0031] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A rubber air spring suspension device, characterized by, The device includes a support frame (1) and multiple air cushions symmetrically arranged at the bottom of the support frame (1). The top of the support frame (1) is provided with a loading platform, and the bottom of the support frame (1) is provided with multiple storage slots (11). The air cushions are arranged in the storage slots (11). The air cushions include a metal frame (2) and an annular air bladder (3) vulcanized at the bottom of the metal frame (2). An air inlet (21) and an air outlet (22) are provided at the vulcanized connection between the metal frame (2) and the air bladder (3). An exhaust port (23) located at the axis of the air bladder (3) is provided in the metal frame (2). An air inlet pipe (12) communicating with the air inlet (21) and an air supply pipe (13) connecting the air outlet (22) and the exhaust port (23) are provided in the support frame (1).

2. The rubber air spring suspension device of claim 1, wherein, The storage tank (11) is provided with air nozzles corresponding to the air inlet (21), air outlet (22) and air exhaust (23), and the top of the metal frame (2) is vulcanized with a rubber sealing layer (25) corresponding to the air inlet (21), air outlet (22) and air exhaust (23).

3. The rubber air spring suspension device of claim 1, wherein, The airbag (3) includes a rubber layer (31) and a skeleton fabric (32) vulcanized into the rubber layer (31).

4. The rubber air spring suspension device of claim 3, wherein, The skeleton fabric (32) is nylon.

5. The rubber air spring suspension device of claim 3, wherein, The outer ring of the airbag (3) is an arc surface, and the inner ring of the airbag (3) has a seal (33). A suture line is provided along the seal (33) to sew the rubber layer (31) on the upper and lower sides of the airbag (3) to the skeleton fabric (32).

6. The rubber air spring suspension device of claim 3, wherein, The skeleton fabric (32) includes a first skeleton fabric and a second skeleton fabric arranged in a ring shape on the upper and lower sides of the airbag (3), as well as a third skeleton fabric with multiple circumferential edgings. The third skeleton fabric is long and has a slanted edge cut at a 45° angle.

7. The rubber air spring suspension device of claim 1, wherein, The metal frame (2) has multiple through holes (24) on its edge. Corresponding to the through holes (24), threaded holes are provided in the storage tank (11). The air cushion is fixed to the bottom of the support frame (1) by bolts.

8. The rubber air spring suspension device of claim 1, wherein, The height of the storage tank (11) is higher than the height of the suspended air cushion in its uninflated state and lower than the height of the suspended air cushion in its inflated state.

9. The rubber air spring suspension device of claim 1, wherein, Solenoid valves and pressure sensors are installed in the gas pipeline (13).

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