Pneumatic lifting device with stable structure

Abstract

The invention relates to the technical field of pneumatic lifting devices, and discloses a pneumatic lifting device with a stable structure, the pneumatic lifting device comprises a fixing frame and a lifting tray, the fixing frame comprises an ejector rod, the bottom of the ejector rod is fixedly connected with a fixing frame, and the two ends of the fixing frame are fixedly connected with mounting lugs respectively; a lifting groove is formed in the inner side wall of the fixing frame, two air cylinders are fixedly connected to the bottom of the ejector rod, the bottoms of the two air cylinders are fixedly connected with the same connecting plate, a vertical rod is fixedly connected to the bottom of the ejector rod, and the bottom of the vertical rod is fixedly connected with the connecting plate. The lifting tray is controlled to descend, the lower positioning block is clamped into the clamping groove in the upper positioning block, the position of the lifting tray is locked, and then the problem that a chain is damaged after a long time due to the fact that a traditional refueling ladder trailer mode mainly depends on ascending and descending of the chain of the refueling ladder is solved through driving of the two air cylinders.

Description

Technical Field

[0001] The invention relates to the technical field of pneumatic lifting devices, in particular to a pneumatic lifting device with a stable structure. Background Art

[0002] A fueling ladder trailer system is a mobile device designed for refueling large vehicles such as trucks, buses and heavy machinery. This system usually consists of two parts: a platform with refueling equipment (fueling ladder) and a trailer, so that the entire device can be easily moved from one location to another.

[0003] The traditional fueling ladder trailer system mainly relies on chains to raise and lower the fueling ladder. Although this method is simple and reliable, it does have some problems during long-term use: the original fueling ladder trailer method mainly relies on the fueling ladder's own chain to rise and fall, which will cause damage to the chain over time. Therefore, there is an urgent need for a pneumatic lifting device with a stable structure. Summary of the invention

[0004] The object of the present invention is to provide a pneumatic lifting device with a stable structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pneumatic lifting device with a stable structure, comprising a fixed frame and a lifting tray, the fixed frame comprising a mandrel, the bottom of the mandrel is fixedly connected to a fixed frame, both ends of the fixed frame are respectively fixedly connected to mounting ears, the inner side wall of the fixed frame is provided with a lifting groove, the bottom of the mandrel is fixedly connected to two cylinders, the bottoms of the two cylinders are respectively fixedly connected to the same connecting plate, the bottom of the mandrel is fixedly connected to a vertical rod, and the bottom of the vertical rod is fixedly connected to the connecting plate;

[0006] The lifting tray includes two lifting rods, the tops of the two lifting rods are fixedly connected to the same lifting top rod, the ends of the two lifting rods close to each other are respectively fixedly connected to the same lifting plate, the backs of the lifting top rods are fixedly connected to two first sliding blocks, the ends of the two lifting rods close to each other are respectively fixedly connected to the second sliding blocks, the bottoms of the two lifting rods are respectively fixedly connected to the same bottom rod, the fronts of the bottom rods are fixedly connected to two supporting plates, the two ends of the lifting rods are respectively fixedly connected to lifting columns, and the ends of the two lifting rods close to each other are respectively fixedly connected to the same connecting rod.

[0007] Preferably, the output arms of the two cylinders respectively penetrate the connecting plate and are fixedly connected to the lifting plate, and the back side of the fixing frame is fixedly connected with a first reinforcing rod.

[0008] The fixed frame is composed of a top rod, a fixed frame and mounting ears. There is a lifting groove in the fixed frame and two cylinders at the bottom. The cylinders are connected to the vertical rods through connecting plates to provide lifting power. The lifting tray is composed of a lifting rod, a lifting plate, a first slider, a second slider, a bottom rod, a support plate, a lifting column and a connecting rod. The lifting rod and the lifting plate slide in the lifting groove of the fixed frame through the first slider and the second slider. A support plate is provided on the bottom rod for carrying items.

[0009] Preferably, the first sliding blocks are slidably disposed in the lifting grooves, and the second sliding blocks are slidably disposed in the lifting grooves.

[0010] Preferably, one end of the lifting column away from the lifting mandrel is fixedly connected to a supporting plate, and the same second reinforcing rod is fixedly connected between the two supporting plates.

[0011] The output arm of the cylinder is directly connected to the lifting plate to provide lifting movement, and the cylinder is controlled by an externally arranged hand-operated air valve assembly. There is a first reinforcing rod on the back of the fixed frame to enhance the structural stability. The lifting column is connected to the support plate to increase the structural strength. The second reinforcing rod connects the two support plates for further reinforcement.

[0012] Preferably, two support plates are fixedly connected to the back side of the fixed frame, a rotating rod is fixedly connected between the two support plates, both ends of the rotating rod pass through the support plates and are movably connected to upper positioning blocks, the two lifting rods are fixedly connected to a third reinforcing rod on the sides away from each other, and the third reinforcing rods are fixedly connected to a lower positioning block on the ends away from each other, and the two ends of the fixed frame are fixedly connected to an upper limit block and a lower limit block, and the lower limit blocks are respectively located below the upper positioning blocks.

[0013] Preferably, the two support plates are fixedly connected with sleeves on one side away from each other, and sliding rods are inserted in the sleeves. The bottom of the sliding rod extends to the outside of the sleeve and is fixedly connected with a limiting plate, the top of the sliding rod is fixedly connected with a grab rod, and the bottom of the grab rod is fixedly connected with a protrusion.

[0014] The two grab bars on the side of each pallet are used to make the protrusions firmly engage in the grooves designed for the ladder under the tension of the springs, and are inclined at 45 degrees to pull longitudinally. No matter how bumpy the tanker truck is, it will move with the movement and will not come off.

[0015] Preferably, the sleeve is fixedly connected to a bottom block on one side away from the support plate, the slide rod is fixedly connected to a top block on one side away from the support plate, the top of the bottom block is fixedly connected to a spring, and the top of the spring is fixedly connected to the top block.

[0016] The present invention provides a pneumatic lifting device with a stable structure. It has the following beneficial effects:

[0017] (1) The present invention comprises a fixed frame consisting of a top rod, a fixed frame and a mounting ear. The fixed frame has a lifting groove and two cylinders at the bottom. The cylinders are connected to the vertical rods through a connecting plate to provide lifting power. The lifting tray is composed of a lifting rod, a lifting top rod, a lifting plate, a first slider, a second slider, a bottom rod, a supporting plate, a lifting column and a connecting rod. The lifting rod and the lifting top rod slide in the lifting groove of the fixed frame through the first slider and the second slider. The bottom rod is provided with a supporting plate for carrying items. The output arm of the cylinder is directly connected to the lifting plate to provide lifting movement, and the cylinder is provided with an external The air valve assembly is controlled by hand. There is a first reinforcing rod on the back of the fixed frame to enhance the structural stability. The lifting column is connected to the support plate to increase the structural strength. The second reinforcing rod connects the two support plates for further reinforcement. When the lifting pallet is lifted upward, the lower positioning block will pop open the upper positioning block, and then the lifting pallet is controlled to descend so that the lower positioning block is stuck into the slot on the upper positioning block to lock the position of the lifting pallet. Then, the drive of two cylinders solves the problem that the traditional refueling ladder trailer method mainly relies on the refueling ladder's own chain to rise and fall, which will cause damage to the chain over time.

[0018] (2) The present invention uses two grab bars on the side of each support plate to firmly engage the protrusions in the grooves designed for the ladder under the tension of the springs, and uses a 45-degree angle to pull the protrusions longitudinally. Regardless of the bumps of the tanker truck, the protrusions will be disengaged with the movement, thereby achieving an effective and safe fixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from the rear side;

[0021] Figure 3 It is a left side perspective three-dimensional structure schematic diagram of the present invention;

[0022] Figure 4 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0023] In the figure: 1, fixed frame; 2, lifting tray; 11, top rod; 12, fixed frame; 13, mounting ear; 14, cylinder; 15, connecting plate; 16, vertical rod; 21, lifting rod; 211, lifting top rod; 22, lifting plate; 23, first slider; 24, second slider; 25, bottom rod; 26, support plate; 27, lifting column; 28, connecting rod; 3, first reinforcing rod; 4, second reinforcing rod; 5, rotating rod; 6, upper positioning block; 7, third reinforcing rod; 8, lower positioning block; 9, upper limit block; 10, lower limit block; 261, sleeve; 262, slide rod; 263, limit plate; 264, grab rod; 265, bump; 266, spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1:

[0028] A preferred embodiment of a pneumatic lifting device with a stable structure provided by the present invention is as follows: Figure 1-3 As shown: a pneumatic lifting device with a stable structure, including a fixing frame 1 and a lifting tray 2, the fixing frame 1 includes a push rod 11, the bottom of the push rod 11 is fixedly connected to a fixing frame 12, both ends of the fixing frame 12 are respectively fixedly connected to mounting ears 13, the inner side wall of the fixing frame 12 is provided with a lifting groove, the bottom of the push rod 11 is fixedly connected to two cylinders 14, the bottoms of the two cylinders 14 are respectively fixedly connected to the same connecting plate 15, the bottom of the push rod 11 is fixedly connected to a vertical rod 16, and the bottom of the vertical rod 16 is fixedly connected to the connecting plate 15;

[0029] The lifting tray 2 includes two lifting rods 21, the tops of the two lifting rods 21 are fixedly connected with the same lifting top rod 211, the ends of the two lifting rods 21 close to each other are respectively fixedly connected with the same lifting plate 22, the backs of the lifting top rods 21 are fixedly connected with two first sliders 23, the ends of the two lifting rods 21 close to each other are respectively fixedly connected with second sliders 24, the bottoms of the two lifting rods 21 are respectively fixedly connected with the same bottom rod 25, the fronts of the bottom rod 25 are fixedly connected with two supporting plates 26, the two ends of the lifting rods 21 are respectively fixedly connected with lifting columns 27, and the ends of the two lifting rods 21 close to each other are respectively fixedly connected with the same connecting rod 28.

[0030] The output arms of the two cylinders 14 respectively penetrate the connecting plate 15 and are fixedly connected to the lifting plate 22 , and the back side of the fixing frame 12 is fixedly connected with the first reinforcing rod 3 .

[0031] The first sliders 23 are slidably disposed in the lifting grooves, and the second sliders 24 are slidably disposed in the lifting grooves.

[0032] One end of the lifting column 27 away from the lifting mandrel 211 is fixedly connected to the supporting plates 26 , and the same second reinforcing rod 4 is fixedly connected between the two supporting plates 26 .

[0033] Two support plates are fixedly connected to the back of the fixed frame 12, and a rotating rod 5 is fixedly connected between the two support plates. Both ends of the rotating rod 5 pass through the support plates and are movably connected to the upper positioning block 6. The two lifting rods 21 are fixedly connected to the third reinforcing rod 7 on the sides away from each other, and the ends of the third reinforcing rod 7 away from each other are fixedly connected to the lower positioning block 8. The two ends of the fixed frame 12 are fixedly connected to the upper limit block 9 and the lower limit block 10, and the lower limit blocks 10 are respectively located below the upper positioning blocks 6.

[0034] Through the above technical solution, the fixed frame 1 is composed of a top rod 11, a fixed frame 12 and a mounting ear 13. The fixed frame 12 has a lifting groove, and there are two cylinders 14 at the bottom. The cylinder 14 is connected to the vertical rod 16 through a connecting plate 15 to provide lifting power. The lifting tray 2 is composed of a lifting rod 21, a lifting top rod 211, a lifting plate 22, a first slider 23, a second slider 24, a bottom rod 25, a support plate 26, a lifting column 27 and a connecting rod 28. The lifting rod 21 and the lifting top rod 211 slide in the lifting groove of the fixed frame 12 through the first slider 23 and the second slider 24. The bottom rod 25 is provided with a support plate 26 for carrying items. The output arm of the cylinder 14 is directly connected to the lifting plate 22 , providing lifting movement, and the cylinder 14 is controlled by an externally arranged hand-operated air valve assembly. A first reinforcing rod 3 is provided on the back of the fixed frame 12 to enhance the structural stability. The lifting column 27 is connected to the support plate 26 to increase the structural strength. The second reinforcing rod 4 connects the two support plates 26 for further reinforcement. When the lifting pallet 2 is lifted upward, the lower positioning block 8 will bounce the upper positioning block 6, and then control the lifting pallet 2 to descend, so that the lower positioning block 8 is stuck in the slot on the upper positioning block 6, locking the position of the lifting pallet 2, and then through the drive of the two cylinders 14, the problem that the traditional refueling ladder trailer method mainly relies on the refueling ladder's own chain to rise and fall, which will cause damage to the chain over time is solved.

[0035] Embodiment 2:

[0036] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , and on the basis of Example 1, it is further obtained that: the two sides of the two support plates 26 that are away from each other are respectively fixedly connected with sleeves 261, and sliding rods 262 are respectively inserted in the sleeves 261. The bottom of the sliding rod 262 extends to the outside of the sleeve 261 and is fixedly connected to the limiting plate 263, the top of the sliding rod 262 is respectively fixedly connected with a grab bar 264, and the bottom of the grab bar 264 is respectively fixedly connected with a protrusion 265.

[0037] The side of the sleeve 261 away from the support plate 26 is fixedly connected to a bottom block, the side of the slide rod 262 away from the support plate 26 is fixedly connected to a top block, the top of the bottom block is fixedly connected to a spring 266, and the top of the spring 266 is fixedly connected to the top block.

[0038] Through the above technical solution, the two grab bars 264 on the side of each support plate 26, under the pulling force of the spring 266, make the protrusion 265 firmly engage in the groove designed for the ladder, and use a 45-degree inclined direction to pull longitudinally. No matter how bumpy the tanker truck is, it will move with it and will not come off, thereby playing an effective and safe fixing role.

[0039] During actual operation, when this device is in use, after pushing the refueling ladder onto the support plate 26 of the lifting tray 2, press the air control valve to rise. As the lifting tray 2 rises, the two grab bars 264 on the side of the support plate 26, under the pulling force of the spring 266, make the protrusion 265 firmly engage in the groove designed for the ladder, and use a 45-degree inclined direction to pull it longitudinally. No matter how the refueling truck bumps, it will move with it and will not fall off, thereby playing an effective and safe fixing role. After the lifting tray 2 rises to a certain height of 500 mm, the mechanism automatically pops open the lower positioning blocks 8 with grooves on both sides of the fixing frame 12, and then presses down. The upper positioning blocks 6 at both ends of the two lifting rods 21 of the lifting tray 2 fall into the slots on the lower positioning blocks 8, fasten the upper fixing device, and complete the loading.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pneumatic lifting device with a stable structure, comprising a fixing frame (1) and a lifting tray (2), characterized in that: The fixing frame (1) comprises a push rod (11), the bottom of the push rod (11) is fixedly connected to a fixing frame (12), both ends of the fixing frame (12) are respectively fixedly connected to mounting ears (13), the inner wall of the fixing frame (12) is provided with a lifting groove, the bottom of the push rod (11) is fixedly connected to two cylinders (14), the bottoms of the two cylinders (14) are respectively fixedly connected to the same connecting plate (15), the bottom of the push rod (11) is fixedly connected to a vertical rod (16), and the bottom of the vertical rod (16) is fixedly connected to the connecting plate (15); The lifting tray (2) comprises two lifting rods (21), the tops of the two lifting rods (21) are fixedly connected to the same lifting top rod (211), the ends of the two lifting rods (21) close to each other are respectively fixedly connected to the same lifting plate (22), the backs of the lifting top rods (211) are fixedly connected to two first sliders (23), the ends of the two lifting rods (21) close to each other are respectively fixedly connected to second sliders (24), the bottoms of the two lifting rods (21) are respectively fixedly connected to the same bottom rod (25), the fronts of the bottom rods (25) are fixedly connected to two supporting plates (26), the two ends of the lifting top rods (211) are respectively fixedly connected to lifting columns (27), and the ends of the two lifting rods (21) close to each other are respectively fixedly connected to the same connecting rod (28).

2. A pneumatic lifting device with a stable structure according to claim 1, characterized in that: The output arms of the two cylinders (14) respectively penetrate the connecting plate (15) and are fixedly connected to the lifting plate (22), and the back side of the fixing frame (12) is fixedly connected to a first reinforcing rod (3).

3. The pneumatic lifting device with a stable structure according to claim 1, characterized in that: The first sliding blocks (23) are respectively slidably disposed in the lifting grooves, and the second sliding blocks (24) are respectively slidably disposed in the lifting grooves.

4. The pneumatic lifting device with a stable structure according to claim 1, characterized in that: One end of the lifting column (27) away from the lifting mandrel (211) is fixedly connected to a support plate (26), and a second reinforcing rod (4) is fixedly connected between the two support plates (26).

5. The pneumatic lifting device with a stable structure according to claim 1, characterized in that: The back side of the fixed frame (12) is fixedly connected to two support plates, a rotating rod (5) is fixedly connected between the two support plates, and both ends of the rotating rod (5) pass through the support plates and are movably connected to an upper positioning block (6). The two lifting rods (21) are fixedly connected to a third reinforcing rod (7) on the side away from each other, and the ends of the third reinforcing rod (7) are fixedly connected to a lower positioning block (8). The two ends of the fixed frame (12) are fixedly connected to an upper limit block (9) and a lower limit block (10), and the lower limit blocks (10) are respectively located below the upper positioning blocks (6).

6. The pneumatic lifting device with a stable structure according to claim 1, characterized in that: The two supporting plates (26) are respectively fixedly connected with sleeves (261) on the sides away from each other, and the sleeves (261) are respectively inserted with sliding rods (262), the bottoms of the sliding rods (262) extend to the outside of the sleeves (261) and are fixedly connected with limiting plates (263), the tops of the sliding rods (262) are respectively fixedly connected with grab bars (264), and the bottoms of the grab bars (264) are respectively fixedly connected with protrusions (265).

7. A pneumatic lifting device with a stable structure according to claim 6, characterized in that: The side of the sleeve (261) away from the support plate (26) is fixedly connected to a bottom block, the side of the slide bar (262) away from the support plate (26) is fixedly connected to a top block, the top of the bottom block is fixedly connected to a spring (266), and the top of the spring (266) is fixedly connected to the top block.

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