Lifting mechanism of lever type air bag

Abstract

According to the technical scheme, the lifting mechanism is characterized in that the lifting mechanism comprises a bottom plate, a connecting block is fixedly installed on the top face of the bottom plate, and levers are installed on the two sides of the connecting block in a hinged mode; the supporting seat is arranged between the two levers, and a bearing platform is fixedly installed on the top face of the supporting seat and used for bearing lifting objects; the lifting assembly is arranged on one side of the connecting block and used for lifting the bearing platform through the lever, by arranging an air bag, when the bearing platform needs to be lifted, the air bag is inflated, the air bag expands under the action of air pressure and pushes the hinge block upwards, and the thrust of the air bag is converted into power enabling the lever to rotate around the hinge point of the connecting block; the levers on the two sides rotate synchronously, the other ends of the levers are matched with the supporting base, the bearing platform is stably lifted, the lifting action of objects is achieved, lifting of the large-size bearing platform is achieved, the equipment installation space is effectively saved, and the lifting device is suitable for the working environment with the limited space and meets the load requirement at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting mechanisms, and in particular to a lifting mechanism for a lever-type airbag. Background Art

[0002] In the fields of mechanical engineering and automation equipment, lifting mechanisms, as core components for adjusting the height of objects, are widely used in various industries, including industrial manufacturing, logistics and transportation, and medical equipment. Currently, common lifting mechanisms include hydraulic, electric, and pneumatic types.

[0003] Existing lifting mechanisms generally have deficiencies in the balance between precision and space occupancy. In order to ensure motion stability and accuracy, some high-precision lifting mechanisms adopt complex multi-stage transmission structures, resulting in a large overall size and unsuitable for use in working environments with limited space. Some compact lifting mechanisms save space, but it is difficult to achieve ideal results in terms of load-bearing capacity and motion accuracy, and cannot meet the high-precision and large-load requirements of precision instruments, automated production lines, etc. for lifting mechanisms. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a lever-type airbag lifting mechanism, which solves the problems mentioned in the background art.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A lever-type airbag lifting mechanism comprises: a bottom plate, a connecting block fixedly mounted on the top surface of the bottom plate, and levers hingedly mounted on both sides of the connecting block;

[0007] A support base is provided between the two levers, and a load-bearing platform is fixedly mounted on the top surface of the support base for carrying the lifting objects;

[0008] The stabilizing member is provided on one side of the support base and is used to ensure the smooth lifting and lowering of the load-bearing platform;

[0009] A buffer member is provided on the top surface of the bottom plate and is used to buffer the speed at which the carrying platform descends;

[0010] a locking member, disposed on the top surface of the base plate and used to lock one end of the lever;

[0011] A lifting assembly is arranged on one side of the connecting block and is used to lift the load-bearing platform through a lever. The lifting assembly includes a mounting plate, which is fixedly mounted on one side of the connecting block. An airbag seat is fixedly mounted on the bottom surface of the mounting plate, an airbag is provided on the top surface of the airbag seat, and a hinge block is fixedly mounted on the top surface of the airbag. An articulated frame is fixedly mounted on one side of the lever, and the articulated frame is hingedly mounted to the articulated block.

[0012] Preferably, the stabilizing member includes a stabilizing block, which is arranged on one side of the support seat, and a first connecting rod is hingedly installed on both sides of the support seat, and the other end of the first connecting rod is hingedly installed on the support seat, and a swing plate is hingedly installed on one side of the first connecting rod, and the lever is hingedly installed on the swing plate, and a sub-rod is hingedly installed on both sides of the connecting block, and the sub-rod is hingedly installed on the swing plate, and a driving rod is provided on the bottom surface of the sub-rod, and a second connecting rod is hingedly installed on both sides of the support seat, and the other end of the second connecting rod is hingedly installed on the support seat, and the driving rod is hingedly installed with the second connecting rod.

[0013] Preferably, a through hole is provided on one side of the connecting block, a sealing cylinder is provided on the outer circular wall surface of the airbag seat, a piston rod is movably connected inside the sealing cylinder, a connecting frame is fixedly installed on one side of the connecting block, a push hole is provided on one side of the connecting frame, the piston rod passes through the push hole and extends to the outside, one end of the piston rod is fixedly sleeved with a connecting frame, a hinged rod is hingedly installed inside the connecting frame, a locking block is fixedly installed on the top surface of the bottom plate, a groove is provided on the top surface of the locking block, a fixing block is fixedly installed on the bottom surface of the groove, a mounting frame is hingedly installed on the outside of the fixing block, a locking rod is fixedly installed on the top surface of the mounting frame, a connecting rod is fixedly installed on one side of the mounting frame, and the connecting rod is hingedly installed together with the hinged rod.

[0014] Preferably, the external fixing sleeve of the piston rod is provided with a pressure plate, and a spring is provided between the pressure plate and the limiting frame.

[0015] Preferably, a lower pressing seat is fixedly mounted on the bottom surface of the stabilizing block, a connecting seat is fixedly mounted on the top surface of the bottom plate, and a buffer spring is provided on the top surface of the connecting seat.

[0016] Preferably, a pressure relief valve is provided outside the airbag seat.

[0017] Preferably, a proportional valve is provided on the bottom surface of the airbag seat.

[0018] Preferably, a pressure sensor is provided on the top surface of the carrying platform, and a PLC controller is fixedly installed on one side of the bottom plate, and the PLC controller is electrically connected to the pressure sensor and the proportional valve.

[0019] In summary, the present invention mainly has the following beneficial effects:

[0020] By setting up an airbag, when it is necessary to lift the carrying platform, air is inflated into the airbag, and the airbag expands under the action of gas pressure, pushing the hinge block upward, and the thrust of the airbag is converted into a power to rotate the lever around the hinge point of the connecting block. The levers on both sides rotate synchronously, and the other end thereof cooperates with the support seat. By setting up a first connecting rod, when the airbag is inflated and pushes the lever to rotate around the connecting block, the lever drives the swing plate to rotate through the hinge point, and the rotation of the swing plate simultaneously drives the first connecting rod and the auxiliary rod to move. The first connecting rod has its two ends hinged to the support seat and the swing plate respectively. Through the principle of triangular stable structure, the horizontal displacement of the support seat is limited to prevent the carrying platform from lateral shaking. When the auxiliary rod swings with the swing plate, it drives the second connecting rod to move through the driving rod. The hinge structure of the second connecting rod and the support seat The movement trajectory of the support seat is further constrained to ensure its vertical lifting. Through the multi-stage linkage of the lever, swing plate, first connecting rod, auxiliary rod and second connecting rod, the rotation of the lever is accurately converted into the linear lifting movement of the support seat, offsetting the lateral force caused by uneven load or fluctuation of airbag thrust, and can effectively suppress the tilt of the load-bearing platform during the lifting process, lift the load-bearing platform smoothly, and realize the rising action of the object. When the load-bearing platform descends, the locking part on one end of the lever is first released, the airbag deflates and shrinks, and the load-bearing platform descends under the action of the gravity of the object, and the lever rotates in the opposite direction. The small-volume airbag is used as the power source, and the lever principle is used to realize the lifting and lowering of the large-volume load-bearing platform, which effectively saves equipment installation space and is suitable for working environments with limited space while meeting load requirements.

[0021] By setting a locking rod, when the airbag is inflated, the airbag expands and generates an upward thrust, driving the lever to rotate around the hinge point of the connecting block, thereby lifting the carrying platform. At the same time, the sealing cylinder installed on the side of the airbag seat will be filled with gas in the airbag seat, and the piston rod will move outward. The piston rod drives the hinged rod to swing through the connecting frame, and then drives the mounting frame to rotate around the fixed block, so that the locking rod swings upward and fits into the locking groove at the bottom of the lever, thereby realizing automatic locking of the lever and ensuring that the carrying platform stays stably in the target position. By setting a spring, when the airbag is inflated, it pushes the piston rod to slide along the push hole. At this time, the pressure plate on the piston rod compresses the spring, and the spring stores elastic potential energy. When the airbag is deflated and contracted, the spring releases the elastic potential energy, assisting the piston rod to return quickly, ensuring that the locking rod quickly disengages from the locking groove, which is conducive to the rapid return of the piston rod and shortens the unlocking time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the lever structure of the present invention;

[0024] Figure 3 is a schematic structural diagram of a first connecting rod of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the locking block of the present invention;

[0026] Figure 5 is a schematic structural diagram of the locking rod of the present invention;

[0027] Figure 6 It is a schematic diagram of the stabilizing block structure of the present invention.

[0028] 1. Bottom plate; 2. Connecting block; 3. Lever; 4. Support seat; 5. Load-bearing platform; 6. Stabilizing block; 7. Swinging plate; 8. First connecting rod; 9. Second connecting rod; 10. Mounting plate; 11. Airbag seat; 12. Airbag; 13. Articulated frame; 14. Articulated block; 15. Auxiliary rod; 16. Driving rod; 17. Sealing cylinder; 18. Limiting frame; 19. Push hole; 20. Piston rod; 21. Connecting frame; 22. Articulated rod; 23. Locking block; 24. Groove; 25. Fixed block; 26. Mounting frame; 27. Locking rod; 28. Connecting rod; 29. Pressure plate; 30. Spring; 31. Lower pressure seat; 32. Connecting seat; 33. Buffer spring; 34. Pressure relief valve; 35. Proportional valve; 36. Pressure sensor; 37. Through hole; 38. PLC controller. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] refer to Figures 1-6 , a lever-type airbag lifting mechanism,

[0031] It comprises: a bottom plate 1, a connecting block 2 is fixedly mounted on the top surface of the bottom plate 1, and levers 3 are hingedly mounted on both sides of the connecting block 2;

[0032] The support base 4 is provided between the two levers 3. A carrying platform 5 is fixedly mounted on the top surface of the support base 4 for carrying the lifting objects.

[0033] A stabilizing member is provided on one side of the support base 4 to ensure the smooth lifting of the carrying platform 5;

[0034] A buffer member is provided on the top surface of the bottom plate 1 and is used to buffer the descending speed of the carrying platform 5;

[0035] A locking member, provided on the top surface of the base plate 1, for locking one end of the lever 3;

[0036] A lifting assembly is provided on one side of the connecting block 2 and is used to lift the carrying platform 5 through the lever 3. The lifting assembly includes a mounting plate 10, which is fixedly mounted on one side of the connecting block 2. An airbag seat 11 is fixedly mounted on the bottom surface of the mounting plate 10, an airbag 12 is provided on the top surface of the airbag seat 11, and a hinge block 14 is fixedly mounted on the top surface of the airbag 12. An articulated frame 13 is fixedly mounted on one side of the lever 3, and the articulated frame 13 is hingedly mounted together with the articulated block 14;

[0037] By setting the airbag 12, when it is necessary to lift the carrying platform 5, air is inflated into the airbag 12, and the airbag 12 expands under the action of gas pressure, pushing the hinge block 14 upward, and the thrust of the airbag 12 is converted into power to rotate the lever 3 around the hinge point of the connecting block 2. The levers 3 on both sides rotate synchronously, and the other end thereof cooperates with the support seat 4 to lift the carrying platform 5 smoothly, thereby realizing the rising action of the object. When the carrying platform 5 descends, the lock of the locking part on one end of the lever 3 is first released, the airbag 12 deflates and shrinks, and the carrying platform 5 descends under the action of the gravity of the object, and the lever 3 rotates in the opposite direction. The small-volume airbag 12 is used as the power source, and the lever principle is used to realize the lifting and lowering of the large-volume carrying platform 5, which effectively saves the equipment installation space and is suitable for working environments with limited space while meeting the load requirements.

[0038] As a further solution of the present invention, the stabilizing member includes a stabilizing block 6, which is arranged on one side of the support base 4, and a first connecting rod 8 is hingedly installed on both sides of the support base 4, and the other end of the first connecting rod 8 is hingedly installed with the support base 4, and a swing plate 7 is hingedly installed on one side of the first connecting rod 8, and the lever 3 is hingedly installed with the swing plate 7, and a sub-rod 15 is hingedly installed on both sides of the connecting block 2, and the sub-rod 15 is hingedly installed with the swing plate 7, and a driving rod 16 is provided on the bottom surface of the sub-rod 15, and a second connecting rod 9 is hingedly installed on both sides of the support base 4, and the other end of the second connecting rod 9 is hingedly installed with the support base 4, and the driving rod 16 is hinged with the second connecting rod 9;

[0039] By setting the first connecting rod 8, when the airbag 12 is inflated to push the lever 3 to rotate around the connecting block 2, the lever 3 drives the swing plate 7 to rotate through the hinge point. The rotation of the swing plate 7 simultaneously drives the first connecting rod 8 and the auxiliary rod 15 to move. The first connecting rod 8 is hinged at both ends to the support seat 4 and the swing plate 7 respectively. Through the principle of triangular stable structure, the horizontal displacement of the support seat 4 is limited to prevent the lateral shaking of the load-bearing platform 5. When the auxiliary rod 15 swings with the swing plate 7, the second connecting rod 9 is pushed to move through the driving rod 16. The hinge structure of the second connecting rod 9 and the support seat 4 further constrains the movement trajectory of the support seat 4 to ensure its vertical lifting. Through the multi-stage linkage of the lever 3, the swing plate 7, the first connecting rod 8, the auxiliary rod 15, and the second connecting rod 9, the rotation of the lever 3 is accurately converted into a linear lifting motion of the support seat 4, offsetting the lateral force generated by uneven load or thrust fluctuations of the airbag 12, and effectively suppressing the tilt of the load-bearing platform 5 during the lifting process.

[0040] As a further solution of the present invention, a through hole 37 is provided on one side of the connecting block 2, a sealing cylinder 17 is provided on the outer cylindrical wall surface of the airbag seat 11, and a piston rod 20 is movably connected inside the sealing cylinder 17. A connecting frame 21 is fixedly installed on one side of the connecting block 2, and a push hole 19 is provided on one side of the connecting frame 21. The piston rod 20 passes through the push hole 19 and extends to the outside. One end of the piston rod 20 is fixedly sleeved with a connecting frame 21, and a hinged rod 22 is hingedly installed inside the connecting frame 21. A locking block 23 is fixedly installed on the top surface of the bottom plate 1, and a groove 24 is provided on the top surface of the locking block 23. A fixing block 25 is fixedly installed on the bottom surface of the groove 24. A mounting frame 26 is hingedly installed on the outside of the fixing block 25, and a locking rod 27 is fixedly installed on the top surface of the mounting frame 26. A connecting rod 28 is fixedly installed on one side of the mounting frame 26, and the connecting rod 28 is hingedly installed with the hinged rod 22;

[0041] By setting a locking rod 27, when the airbag 12 is inflated, the airbag 12 expands to generate an upward thrust, driving the lever 3 to rotate around the hinge point of the connecting block 2, thereby lifting the carrying platform 5. At the same time, the sealing cylinder 17 installed on the side of the airbag seat 11 will be filled with gas in the airbag seat 11, and the piston rod 20 will move outward. The piston rod 20 drives the hinge rod 22 to swing through the connecting frame 21, and then drives the mounting frame 26 to rotate around the fixed block 25, so that the locking rod 27 swings upward and is stuck in the locking groove at the bottom of the lever 3, thereby realizing automatic locking of the lever 3 and ensuring that the carrying platform 5 stays stably in the target position.

[0042] As a further solution of the present invention, a pressure plate 29 is provided on the outer fixed sleeve of the piston rod 20, and a spring 30 is provided between the pressure plate 29 and the limiting frame 18;

[0043] By setting the spring 30, when the airbag 12 is inflated, the piston rod 20 is pushed to slide along the push hole 19. At this time, the pressure plate 29 on the piston rod 20 compresses the spring 30, and the spring 30 stores elastic potential energy. When the airbag 12 is deflated and contracted, the spring 30 releases the elastic potential energy, assisting the piston rod 20 to return quickly, ensuring that the locking rod 27 quickly disengages from the locking groove, which is conducive to the rapid return of the piston rod 20 and shortens the unlocking time.

[0044] As a further solution of the present invention, a lower pressing seat 31 is fixedly installed on the bottom surface of the stabilizing block 6, a connecting seat 32 is fixedly installed on the top surface of the bottom plate 1, and a buffer spring 33 is provided on the top surface of the connecting seat 32;

[0045] By setting the buffer spring 33, when the carrying platform 5 descends, the stabilizing block 6 moves downward with the supporting seat 4, and the lower pressure seat 31 gradually approaches the connecting seat 32 and squeezes the buffer spring 33. The buffer spring 33 is compressed and deformed after being subjected to pressure, and converts the kinetic energy generated when the carrying platform 5 descends into its own elastic potential energy, slowing down the descending speed of the carrying platform 5, providing flexible buffering, and reducing rigid collisions.

[0046] As a further solution of the present invention, a pressure relief valve 34 is provided on the outside of the airbag seat 11;

[0047] By setting the pressure relief valve 34, under normal working conditions, the pressure relief valve 34 is in a closed state. When the airbag 12 is inflated, gas continuously accumulates in the airbag 12, and the pressure gradually increases, pushing the lever 3 to achieve a smooth lifting of the carrying platform 5. When the airbag 12 is over-inflated or the system is blocked, etc., causing the pressure in the airbag 12 to exceed the set pressure threshold of the pressure relief valve 34, the pressure relief valve 34 automatically opens to discharge part of the gas in the airbag 12, so that the pressure of the airbag 12 drops rapidly to a safe range, avoiding the airbag 12 from rupturing due to overpressure, effectively preventing the airbag 12 from being damaged due to overpressure, and avoiding the probability of accidents such as equipment failure and falling objects caused by the rupture of the airbag 12.

[0048] As a further solution of the present invention, a proportional valve 35 is provided on the bottom surface of the airbag seat 11;

[0049] By setting the proportional valve 35, in the rising stage: when the carrying platform 5 needs to be lifted, the control system sends a signal to the proportional valve 35, the proportional valve 35 opens and adjusts the opening according to the preset program, so that the compressed air flows into the airbag 12 rapidly at a large flow rate, and the airbag 12 expands rapidly, generating sufficient thrust to drive the lever 3 to rotate, thereby realizing the rapid start of the carrying platform 5. As the carrying platform 5 approaches the target position, the proportional valve 35 gradually reduces the opening, reduces the air intake flow, slowly inflates the airbag 12, and slows down the rotation speed of the lever 3, thereby realizing a smooth transition of "fast rise and slow stop", avoiding the displacement of objects or damage to equipment due to inertial impact.

[0050] As a further solution of the present invention, a pressure sensor 36 is provided on the top surface of the carrying platform 5, and a PLC controller 38 is fixedly installed on one side of the base plate 1. The PLC controller 38 is electrically connected to the pressure sensor 36 and the proportional valve 35;

[0051] By setting up a pressure sensor 36, when an object is placed on the carrying platform 5, the pressure sensor 36 detects the pressure on the platform in real time, and converts the pressure signal into an electrical signal and transmits it to the PLC controller 38, which is compared with the preset pressure threshold, so that the airbag 12 provides a thrust that matches the load to achieve smooth lifting.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A lever-type airbag lifting mechanism, characterized in that: include: A bottom plate (1), a connecting block (2) being fixedly mounted on the top surface of the bottom plate (1), and levers (3) being hingedly mounted on both sides of the connecting block (2); A support seat (4) is arranged between the two levers (3), and a bearing platform (5) is fixedly mounted on the top surface of the support seat (4) for bearing the lifting objects; A stabilizing member, provided on one side of the support seat (4), for ensuring that the carrying platform (5) is lifted and lowered smoothly; A buffer member is provided on the top surface of the bottom plate (1) and is used to buffer the descending speed of the carrying platform (5); A locking member, provided on the top surface of the base plate (1), for locking one end of the lever (3); A lifting assembly is provided on one side of the connecting block (2) and is used to lift the bearing platform (5) through a lever (3). The lifting assembly includes a mounting plate (10). The mounting plate (10) is fixedly mounted on one side of the connecting block (2). An airbag seat (11) is fixedly mounted on the bottom surface of the mounting plate (10). An airbag (12) is provided on the top surface of the airbag seat (11). A hinge block (14) is fixedly mounted on the top surface of the airbag (12). An articulated frame (13) is fixedly mounted on one side of the lever (3). The articulated frame (13) is hingedly mounted together with the articulated block (14).

2. The lever-type airbag lifting mechanism according to claim 1, characterized in that: The stabilizing member comprises a stabilizing block (6), the stabilizing block (6) being arranged on one side of the support seat (4), a first connecting rod (8) being hingedly mounted on both sides of the support seat (4), the other end of the first connecting rod (8) being hingedly mounted on the support seat (4), a swing plate (7) being hingedly mounted on one side of the first connecting rod (8), the lever (3) being hingedly mounted on the swing plate (7), a sub-rod (15) being hingedly mounted on both sides of the connecting block (2), the sub-rod (15) being hingedly mounted on the swing plate (7), a driving rod (16) being arranged on the bottom surface of the sub-rod (15), a second connecting rod (9) being hingedly mounted on both sides of the support seat (4), the other end of the second connecting rod (9) being hingedly mounted on the support seat (4), and the driving rod (16) being hingedly mounted on the second connecting rod (9).

3. The lever-type airbag lifting mechanism according to claim 1, characterized in that: A through hole (37) is provided on one side of the connecting block (2), a sealing cylinder (17) is provided on the outer circumferential wall of the airbag seat (11), a piston rod (20) is movably connected to the interior of the sealing cylinder (17), a connecting frame (21) is fixedly installed on one side of the connecting block (2), a push hole (19) is provided on one side of the connecting frame (21), the piston rod (20) passes through the push hole (19) and extends to the outside, one end of the piston rod (20) is fixedly sleeved with a connecting frame (21), the interior of the connecting frame (21) A hinged rod (22) is hingedly installed, a locking block (23) is fixedly installed on the top surface of the bottom plate (1), a groove (24) is provided on the top surface of the locking block (23), a fixing block (25) is fixedly installed on the bottom surface of the groove (24), a mounting frame (26) is hingedly installed on the outside of the fixing block (25), a locking rod (27) is fixedly installed on the top surface of the mounting frame (26), a connecting rod (28) is fixedly installed on one side of the mounting frame (26), and the connecting rod (28) is hingedly installed together with the hinged rod (22).

4. The lever-type airbag lifting mechanism according to claim 3, characterized in that: The external fixing sleeve of the piston rod (20) is provided with a pressing plate (29), and a spring (30) is provided between the pressing plate (29) and the limiting frame (18).

5. The lever-type airbag lifting mechanism according to claim 2, characterized in that: A lower pressing seat (31) is fixedly mounted on the bottom surface of the stabilizing block (6), a connecting seat (32) is fixedly mounted on the top surface of the bottom plate (1), and a buffer spring (33) is provided on the top surface of the connecting seat (32).

6. The lever-type airbag lifting mechanism according to claim 1, characterized in that: A pressure relief valve (34) is provided outside the airbag seat (11).

7. The lever-type airbag lifting mechanism according to claim 1, characterized in that: A proportional valve (35) is provided on the bottom surface of the airbag seat (11).

8. The lever-type airbag lifting mechanism according to claim 7, characterized in that: A pressure sensor (36) is provided on the top surface of the carrying platform (5), and a PLC controller (38) is fixedly installed on one side of the base plate (1). The PLC controller (38) is electrically connected to the pressure sensor (36) and the proportional valve (35).

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