Combined high-safety hydraulic cylinder

Abstract

The invention discloses a combined type high-safety hydraulic cylinder which comprises a plurality of cylinder barrels, piston rods are slidably connected into the cylinder barrels, the combined type high-safety hydraulic cylinder further comprises a liquid supply oil tank, a liquid homogenizing mechanism and a control mechanism, and hydraulic oil is contained in the liquid supply oil tank; the liquid supply oil tank is provided with a pressure pump used for supplying hydraulic oil to the multiple cylinder barrels. The liquid homogenizing mechanism comprises an oil distributor, a first pipe body communicated with the oil distributor is fixedly connected to the pressure pump, a second pipe body matched with the cylinder barrel is fixedly connected to the oil distributor, and a relay assembly used for achieving synchronous jacking of the piston rods is installed at the end, away from the oil distributor, of the second pipe body. According to the combined type high-safety hydraulic cylinder, it can be guaranteed that all the piston rods are jacked synchronously, and a storage tank is stressed evenly, so that the storage tank is prevented from inclining in the jacking process, the quality problem caused by uneven stress of the storage tank is avoided, and meanwhile the safety of workers can be effectively guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydraulic cylinder equipment, and particularly relates to a combined high-safety hydraulic cylinder. Background Art

[0002] During the manufacturing process of storage tanks, combined hydraulic cylinders are usually required to lift the storage tanks when using the up-pulling method for welding. The combined hydraulic cylinder provides a powerful lifting force in the vertical direction through the cooperative action of the cylinder barrel and the piston rod to ensure that the storage tank can be welded smoothly.

[0003] However, since the combined hydraulic cylinder is composed of multiple cylinder barrels and piston rods, in the actual use process, due to the lengths of the oil pipelines, multiple piston rods cannot be kept completely synchronized during lifting, which will cause the storage tank to tilt. This tilt not only increases the safety risks of the staff, but also makes the storage tank bear uneven forces, thus resulting in quality problems such as weld cracks and splicing plate distortion.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a combined high-safety hydraulic cylinder.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the present invention and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Invention

[0006] The purpose of the present invention is to provide a combined high-safety hydraulic cylinder, which can ensure the synchronous lifting of each piston rod, make the storage tank bear uniform forces, thereby preventing the storage tank from tilting during the lifting process, avoiding quality problems caused by uneven forces on the storage tank, and effectively ensuring the safety of the staff at the same time.

[0007] To achieve the above purpose, a combined high-safety hydraulic cylinder provided by a specific embodiment of the present invention includes a plurality of cylinder barrels, a piston rod is slidably connected in each cylinder barrel, and the combined high-safety hydraulic cylinder further includes a liquid supply oil tank, a liquid equalizing mechanism and a control mechanism. The liquid supply oil tank is filled with hydraulic oil, and a pressure pump for supplying hydraulic oil to the plurality of cylinder barrels is installed on the liquid supply oil tank; the liquid equalizing mechanism includes an oil distributor, a first pipe body connected to the oil distributor is fixedly connected to the pressure pump, a second pipe body matching the cylinder barrel is fixedly connected to the oil distributor, and a relay assembly for realizing the synchronous lifting of the plurality of piston rods is installed at one end of the second pipe body far from the oil distributor; the control mechanism is fixedly installed on the liquid supply oil tank, the control mechanism can start or stop the pressure pump, and the control mechanism is wirelessly connected to the relay assembly.

[0008] In one or more embodiments of the present invention, the relay assembly includes a relay cylinder. One end of the second pipe body away from the oil distributor is fixedly connected to the relay cylinder. A fixing ring is fixedly connected to the inner wall of the relay cylinder. A piston block that fits against the fixing ring is slidably connected in the relay cylinder. A contact sensor that fits against the piston block is fixedly installed on the fixing ring. A third pipe body that communicates with the cylinder barrel is fixedly connected to the relay cylinder.

[0009] In one or more embodiments of the present invention, the fixing ring is located between the second pipe body and the third pipe body, and the piston block can achieve the on-off between the second pipe body and the third pipe body.

[0010] In one or more embodiments of the present invention, an electromagnet is embedded in the piston block.

[0011] In one or more embodiments of the present invention, a stop valve is installed on the second pipe body, and the stop valve is located on the second pipe body between the relay cylinder and the oil distributor.

[0012] In one or more embodiments of the present invention, a pressure valve is installed on the third pipe body.

[0013] In one or more embodiments of the present invention, a jacking plate is fixedly connected to the piston rod. A fixing plate that matches the jacking plate is fixedly connected to the cylinder barrel. A pressure-sharing component for supporting the jacking plate is fixedly installed on the fixing plate.

[0014] In one or more embodiments of the present invention, the pressure-sharing component includes a sliding sleeve. The sliding sleeve is fixedly connected to the fixing plate. A first support column is slidably connected in the sliding sleeve. One end of the first support column is fixedly connected to the jacking plate. A through groove is formed in the sliding sleeve. A limiting block that matches the through groove is inserted into the sliding sleeve.

[0015] In one or more embodiments of the present invention, a fixing box that matches the through groove is fixedly connected to the sliding sleeve. A cylinder is fixedly installed in the fixing box. The limiting block is fixedly connected to the cylinder.

[0016] In one or more embodiments of the present invention, a pair of second support columns that match the through groove are fixedly connected to the fixing plate, and the pair of second support columns are respectively attached to the side walls of the sliding sleeve.

[0017] Compared with the prior art, a combined high-safety hydraulic cylinder of the present invention can ensure that each piston rod is jacked synchronously, making the force on the storage tank uniform, thereby preventing the storage tank from tilting during the jacking process, avoiding quality problems of the storage tank caused by uneven force, and effectively ensuring the safety of the staff at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of a combined high - safety hydraulic cylinder in an embodiment of the present invention;

[0020] Figure 2 Liquid - supply fuel tank diagram of a combined high - safety hydraulic cylinder in an embodiment of the present invention;

[0021] Figure 3 Structural schematic diagram of a single hydraulic cylinder of a combined high - safety hydraulic cylinder in an embodiment of the present invention;

[0022] Figure 4 Cross - section view of the relay cylinder of a combined high - safety hydraulic cylinder in an embodiment of the present invention Figure 1 ;

[0023] Figure 5 Cross - section view of the relay cylinder of a combined high - safety hydraulic cylinder in an embodiment of the present invention Figure 2 ;

[0024] Figure 6 Cross - section view of the voltage - dividing component of a combined high - safety hydraulic cylinder in an embodiment of the present invention Figure 1 ;

[0025] Figure 7 For Figure 6 Structural schematic diagram at position A in

[0026] Figure 8 Cross - section view of the voltage - dividing component of a combined high - safety hydraulic cylinder in an embodiment of the present invention Figure 2 ;

[0027] Figure 9 For Figure 8 Structural schematic diagram at position B in

[0028] Main reference numeral description:

[0029] 1. Liquid supply oil tank; 2. Pressurizing pump; 21. First pipe body; 3. Oil distributor; 31. Second pipe body; 32. Cut-off valve; 33. Relay cylinder; 331. Fixed ring; 3311. Contact sensor; 332. Piston block; 3321. Electromagnet; 34. Third pipe body; 4. Control mechanism; 5. Cylinder barrel; 501. Piston rod; 502. Fixed plate; 51. Lifting plate; 52. Sliding sleeve; 521. Through groove; 53. First support column; 54. Fixed box; 541. Cylinder; 542. Limit block; 55. Second support column; 6. Pressure valve. Specific implementation mode

[0030] In order to enable those skilled in the art of this technology to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0031] As Figures 1 to 5 shown, a combined high-safety hydraulic cylinder in an embodiment of the present invention includes a plurality of liquid supply oil tanks 1, and the liquid supply oil tanks 1 are filled with hydraulic oil. A pressurizing pump 2, a liquid equalizing mechanism and a control mechanism 4 are installed on the liquid supply oil tank 1. The liquid equalizing mechanism includes an oil distributor 3. A first pipe body 21 connected to the oil distributor 3 is welded on the pressurizing pump 2. A plurality of second pipe bodies 31 are welded on the oil distributor 3. Each second pipe body 31 away from the oil distributor 3 is connected to a cylinder barrel 5. A piston rod 501 is slidably connected in the cylinder barrel 5. A relay assembly for synchronously lifting a plurality of piston rods 501 is installed on the second pipe body 31. The control mechanism 4 is fixedly installed on the liquid supply oil tank 1. The control mechanism 4 can start or stop the pressurizing pump 2, and the control mechanism 4 is in telecommunication connection with the relay assembly.

[0032] Specifically, the distance between each relay assembly and the matching cylinder barrel 5 is equal. When lifting the storage tank, the pressurizing pump 2 is started. The pressurizing pump 2 transports the hydraulic oil in the liquid supply oil tank 1 into the oil distributor 3, and the oil distributor 3 equalizes the flow of the hydraulic oil. The evenly flowing hydraulic oil enters the relay assembly, and the relay assembly can make the hydraulic oil enter the cylinder barrel 5 synchronously, ensuring that the piston rods 501 in a plurality of cylinder barrels 5 are lifted synchronously.

[0033] As Figures 2 to 5As shown in the figure, the relay assembly includes a relay cylinder 33. One end of the second pipe body 31 away from the oil distributor 3 is threadedly connected to the relay cylinder 33. A fixing ring 331 is integrally formed on the inner wall of the relay cylinder 33. A piston block 332 that fits against the fixing ring 331 is slidably connected inside the relay cylinder 33. A contact sensor 3311 that fits against the piston block 332 is fixedly installed on the fixing ring 331. A third pipe body 34 that communicates with the cylinder barrel 5 is threadedly connected to the relay cylinder 33.

[0034] Specifically, a stop valve 32 is installed on the second pipe body 31. The stop valve 32 is located on the second pipe body 31 between the relay cylinder 33 and the oil distributor 3. After the hydraulic oil in the second pipe body 31 enters the relay cylinder 33, the piston block 332 will be pushed upward as the hydraulic oil in the relay cylinder 33 increases. When the piston block 332 separates from the fixing ring 331, the contact sensor 3311 sends a signal to the second pipe body 31 and the control mechanism 4. The stop valve 32 installed on this second pipe body 31 will close, and the hydraulic oil in the oil distributor 3 will enter other second pipe bodies 31.

[0035] When the control mechanism 4 receives all the signals sent by the contact sensors 3311, the control mechanism 4 controls the pressure pump 2 to close. At this moment, the hydraulic oil in all the relay cylinders 33 is equal, and all the second pipe bodies 31 are also filled with hydraulic oil. The display screen on the control mechanism 4 will show that the preparation is complete. The staff can issue instructions to the pressure pump 2 and all the stop valves 32 by operating the control mechanism 4, so that when the pressure pump 2 starts, all the stop valves 32 open. In this way, the hydraulic oil is input into the cylinder barrel 5 from the third pipe body 34 on the relay cylinder 33, and the piston rod 501 in the cylinder barrel 5 can rise synchronously, preventing the storage tank lifted by multiple piston rods 501 from tilting. This not only ensures the safety of the staff but also avoids the problem of damage to the storage tank caused by uneven force, providing guarantee for the later use of the storage tank.

[0036] It should be noted that the fixing ring 331 is located between the second pipe body 31 and the third pipe body 34, and the third pipe body 34 is above the second pipe body 31. The piston block 332 can realize the on-off between the second pipe body 31 and the third pipe body 34. When the hydraulic oil enters the relay cylinder 33, it will not flow out from the third pipe body 34. Even after the piston block 332 separates from the fixing ring 331, the hydraulic oil in the relay cylinder 33 will not flow out from the third pipe body 34. After multiple stop valves 32 are closed, the hydraulic oil in multiple relay cylinders 33 is equal, ensuring that after the pressure pump 2 is restarted, the hydraulic oil in the relay cylinder 33 can be simultaneously input into the cylinder barrel 5 from the third pipe body 34.

[0037] Furthermore, an electromagnet 3321 is embedded in the piston block 332. As hydraulic oil is continuously injected into the relay cylinder 33, the piston block 332 is lifted by the hydraulic oil. When the piston block 332 and the upper end surface of the relay cylinder 33 are in contact, the electromagnet 3321 is activated to attach the piston block 332 to the upper end surface of the relay cylinder 33. At this time, the nozzle of the third tube body 34 is fully open, ensuring the efficient delivery of hydraulic oil by the third tube body 34.

[0038] Furthermore, after the tank is welded, booster pump 2 reverses direction, causing the hydraulic oil in cylinder 5 to flow back into supply tank 1. This return flow is not affected by piston block 332, which is attached to the upper surface of relay cylinder 33. When the hydraulic oil level in relay cylinder 33 drops below contact sensor 3311, contact sensor 3311 issues a command, de-energizing electromagnet 3321 and eliminating its magnetism. Piston block 332 slides downward and reattaches to retaining ring 331, causing contact sensor 3311 to send a signal to control mechanism 4. Upon receiving the signals from all contact sensors 3311, control mechanism 4 stops booster pump 2.

[0039] Furthermore, a pressure valve 6 is installed on the third tube body 34. When the piston rod 501 is lifted upward, the pressure valve 6 monitors the pressure of the hydraulic oil in the third tube body 34 in real time. If the pressure detected by a certain pressure valve 6 is too high, indicating that the corresponding piston rod 501 is rising too fast, the pressure valve 6 sends a signal to the corresponding stop valve 32, causing the stop valve 32 to adjust its opening, thereby controlling the flow of hydraulic oil into the relay cylinder 33, ensuring the lifting speed of the piston rod 501 and further ensuring the stability of the tank during lifting.

[0040] like Figures 6 to 9 As shown, a lifting plate 51 is welded to the piston rod 501, and a fixing plate 502 matching the lifting plate 51 is welded to the cylinder 5. A pressure dividing assembly for supporting the lifting plate 51 is fixedly mounted on the fixing plate 502. The fixing plate 502 can reduce the pressure between the cylinder 5 and the ground, thereby improving the stability of the cylinder 5.

[0041] The pressure-dividing assembly includes a sliding sleeve 52, which is welded to the fixed plate 502. A first support column 53 is slidably connected inside the sliding sleeve 52. One end of the first support column 53 is welded to the lifting plate 51. A through slot 521 is provided on the sliding sleeve 52. A limit block 542 matching the through slot 521 is inserted into the sliding sleeve 52.

[0042] Specifically, when the storage tank is lifted upward, the first support column 53 slides upward in the sleeve 52 following the lifting plate 51. When the lower end surface of the first support column 53 is flush with the upper wall of the through groove 521, the limit block 542 is inserted into the through groove 521 to block the first support column 53 and prevent the first support column 53 from sliding downward in the sleeve 52. When welding the splicing plates, the sleeve 52 can share the tank pressure on the piston rod 501 and prevent the piston rod 501 from being damaged by excessive pressure. In addition, the sleeve 52 can provide sufficient strength. Even if a cylinder 5 or piston rod 501 is damaged, the support of the sleeve 52 can withstand the weight of the tank, thereby improving the safety of welders during operation.

[0043] Furthermore, a pair of second support columns 55 are welded to the fixing plate 502 and match the through-slots 521. The second support columns 55 are respectively attached to the sidewalls of the sliding sleeve 52. When the stopper 542 passes through the through-slots 521 and is inserted into the through-slots 521, the second support columns 55 provide support for the stopper 542, thereby strengthening the sliding sleeve 52.

[0044] Furthermore, a fixing box 54 is welded on the sleeve 52 and matches the through slot 521. A cylinder 541 is fixedly installed in the fixing box 54, and a limit block 542 is welded to the cylinder 541. After the storage tank is lifted, a remote command to the cylinder 541 can cause the limit block 542 to slide in the fixing box 54, making it safer and more convenient to use.

[0045] When using, Figures 1 to 9 As shown, after the multiple cylinders 5 are distributed, the control mechanism 4 issues a command to start the booster pump 2. The booster pump 2 injects the hydraulic oil from the supply tank 1 into the multiple relay cylinders 33 through the oil distributor 3. The piston blocks 332 in the relay cylinders 33 are lifted by the hydraulic oil, and the corresponding stop valves 32 are closed. When all the stop valves 32 are closed, the hydraulic oil in the multiple relay cylinders 33 is now the same, because the distances between the multiple relay cylinders 33 and the corresponding cylinders 5 are equal. At this time, restarting the booster pump 2 ensures that the hydraulic oil reaches the cylinders 5 at the same time, and the multiple piston rods 501 are lifted simultaneously, preventing the tanks from tilting when being lifted.

[0046] In addition, after the storage tank is lifted, during the welding process, the pressure-dividing assembly can also share the pressure on the piston rod 501, thereby improving the safety of the welding personnel.

[0047] Compared with the existing technology, the combined high-safety hydraulic cylinder of the present invention can ensure that each piston rod is lifted synchronously, so that the storage tank is evenly stressed, thereby preventing the storage tank from tilting during the lifting process, avoiding quality problems of the storage tank caused by uneven force, and effectively ensuring the safety of the staff.

[0048] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0049] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A combined high-safety hydraulic cylinder, comprising a plurality of cylinder barrels, wherein a piston rod is slidably connected in the cylinder barrels, and is characterized in that It further includes: A liquid supply fuel tank filled with hydraulic oil, and a pressure pump for supplying hydraulic oil to a plurality of cylinders is installed on the liquid supply fuel tank; A liquid equalizing mechanism, the liquid equalizing mechanism includes an oil distributor, a first pipe body connected to the oil distributor is fixedly connected to the pressure pump, a second pipe body matching the cylinder is fixedly connected to the oil distributor, and a relay assembly for synchronously lifting a plurality of piston rods is installed at one end of the second pipe body away from the oil distributor; A control mechanism, the control mechanism is fixedly installed on the liquid supply fuel tank, the control mechanism can start or stop the pressure pump, and the control mechanism is wirelessly connected to the relay assembly.

2. The combined high-safety hydraulic cylinder according to claim 1, wherein, The relay assembly includes a relay cylinder, one end of the second pipe body away from the oil distributor is fixedly connected to the relay cylinder, a fixing ring is fixedly connected to the inner wall of the relay cylinder, a piston block fitting the fixing ring is slidably connected in the relay cylinder, a contact sensor fitting the piston block is fixedly installed on the fixing ring, and a third pipe body connected to the cylinder is fixedly connected to the relay cylinder.

3. The combined high-safety hydraulic cylinder according to claim 2, wherein The fixing ring is located between the second pipe body and the third pipe body, and the piston block can realize the on-off between the second pipe body and the third pipe body.

4. The combined high-safety hydraulic cylinder according to claim 3, characterized in that An electromagnet is embedded in the piston block.

5. The combined high-safety hydraulic cylinder according to claim 2, wherein A stop valve is installed on the second pipe body, and the stop valve is located on the second pipe body between the relay cylinder and the oil distributor.

6. The combined high-safety hydraulic cylinder according to claim 2, characterized in that, A pressure valve is installed on the third pipe body.

7. A combined high-safety hydraulic cylinder according to claim 1, characterized in that, A lifting plate is fixedly connected to the piston rod, a fixing plate matching the lifting plate is fixedly connected to the cylinder, and a pressure dividing assembly for supporting the lifting plate is fixedly installed on the fixing plate.

8. A combined high-safety hydraulic cylinder according to claim 7, characterized in that, The pressure dividing assembly includes a sliding sleeve, the sliding sleeve is fixedly connected to the fixing plate, a first support column is slidably connected in the sliding sleeve, one end of the first support column is fixedly connected to the lifting plate, a through groove is formed in the sliding sleeve, and a limiting block matching the through groove is inserted into the sliding sleeve.

9. A combined high-safety hydraulic cylinder according to claim 8, characterized in that, A fixing box matching the through groove is fixedly connected to the sliding sleeve, a cylinder is fixedly installed in the fixing box, and the limiting block is fixedly connected to the cylinder.

10. A combined high-safety hydraulic cylinder according to claim 8, characterized in that, A pair of second support columns matching the through groove are fixedly connected to the fixing plate, and the pair of second support columns are respectively attached to the side walls of the sliding sleeve.

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