Lifting column capable of being lifted and lifted and lifting method thereof

Abstract

The invention belongs to the technical field of ground piles, and particularly relates to a lifting column capable of being lifted and a lifting method thereof.The lifting column capable of being lifted comprises a containing cylinder and a lifting cylinder, the containing cylinder is used for being buried underground, and the lifting cylinder is arranged in the containing cylinder in a liftable mode; the shaft sleeve is arranged in the containing cylinder, and the shaft sleeve is fixedly connected with the containing cylinder; the shaft strip is rotatably mounted in the lifting cylinder, and the shaft strip supports the lifting cylinder in the vertical direction; the shaft strip is located in the shaft sleeve, a positioning clamping block is arranged on the shaft strip, a vertical guide groove matched with the positioning clamping block is formed in the shaft sleeve, a positioning groove matched with the positioning clamping block is formed in the position, located on one side of the guide groove, of the shaft sleeve, and the guide groove is communicated with the positioning groove. The complexity of the lifting type ground pile is greatly reduced, the lifting cylinder can be lowered into the containing cylinder to be hidden, the ground pile does not need to be additionally stored, the ground pile can be locally stored, and great convenience is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of ground piles, and in particular relates to a lifting column that can be lifted and a lifting method thereof. Background Art

[0002] Lifting bollards are common equipment on the road. They can be used for traffic control in some enterprises, units, scenic spots and other areas where access restrictions are required to prevent unauthorized vehicles from entering and ensure safety. In addition, lifting bollards can also be used to restrict access to sidewalks and non-motor vehicles to prevent motor vehicles from entering. In crowded areas such as schools, hospitals, and scenic spots, lifting bollards can also be used to restrict access and evacuate people.

[0003] There are different types of lifting piles at present, such as pneumatic lifting systems to drive lifting piles, hydraulic lifting systems to drive lifting piles, electric lifting piles, etc. These types of piles need to install a drive system, the overall structure is relatively complex, and the construction is difficult and the layout cost is high. At present, there is also a detachable and movable type of pile, which is to fix the pile to the ground with bolts and can be removed when not in use. This type of pile is inconvenient to use because it needs to be disassembled. Summary of the invention

[0004] The present invention aims to provide a lifting column that can be pulled and a lifting method thereof, so as to realize convenient lifting and lifting of ground piles through the lifting column that can be pulled. The lifting column that can be pulled is lifted and positioned through a purely mechanical structure, and there is no need to bury hydraulic, electric or other lifting systems underground, which greatly reduces the complexity of the lifting ground piles. The lifting column that can be pulled has two states, namely, raised and hidden, and can locally store the ground piles.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions: Provided is a lifting column that can be lifted, comprising a receiving cylinder and a lifting cylinder, wherein the receiving cylinder is used to be buried underground, and the lifting cylinder is lifted and lowered in the receiving cylinder; and further comprising: A shaft sleeve, the shaft sleeve is disposed in the accommodating tube, and the shaft sleeve is fixedly connected to the accommodating tube; An axis bar, the axis bar is rotatably installed in the lifting cylinder, and the axis bar supports the lifting cylinder in the vertical direction; The shaft bar is located in the shaft sleeve, a positioning block is provided on the shaft bar, a vertical guide groove matching the positioning block is provided on the shaft sleeve, and a positioning groove matching the positioning block is provided on one side of the guide groove on the shaft sleeve, and the guide groove is connected with the positioning groove.

[0006] Preferably, a lock structure is provided at the top of the shaft or between the top of the lifting cylinder and the shaft, so as to control the rotation of the shaft by a key matching the lock structure.

[0007] Preferably, the top surface of the shaft is exposed on the top surface of the lifting cylinder, and the locking structure is a triangular lock arranged on the top surface of the shaft.

[0008] Preferably, a tension spring is provided between the lifting cylinder and the shaft bar. When the shaft bar is pulled upward along the sleeve to a position, the shaft bar rotates under the action of the tension spring and causes the positioning block to be inserted into the positioning groove.

[0009] Preferably, the lifting cylinder includes a lifting cylinder body and a lifting cylinder cover, the upper end of the axis is rotatably mounted on the lifting cylinder cover, and the axis supports the lifting cylinder cover in the vertical direction; one end of the tension spring is connected to the bottom of the lifting cylinder cover through a first hanging ring, and the other end is connected to the side of the axis through a second hanging ring; the lifting cylinder cover is detachably mounted on the top of the lifting cylinder body.

[0010] Preferably, a first support ring is provided on the top of the inner side of the lifting cylinder body, and the lifting cylinder cover is connected to the first support ring through a first bolt; The accommodating cylinder comprises an accommodating cylinder body and an accommodating cylinder cover. A second support ring is provided on the top inner side of the accommodating cylinder body. The accommodating cylinder cover is connected to the second support ring via a second bolt. The outer diameter of the lifting cylinder matches the inner diameter of the accommodating cylinder cover.

[0011] Preferably, the lifting cylinder cover is provided with a through hole for passing the shaft bar, the top of the shaft bar is provided with a limiting top cap, and the shaft bar is provided with a limiting nut on the lower side of the lifting cylinder cover.

[0012] Preferably, an anti-dropout sleeve is sleeved on the shaft, the anti-dropout sleeve is located above the positioning block, and the anti-dropout sleeve is fixedly connected to the top of the shaft sleeve.

[0013] Preferably, a handle is provided on the top of the lifting cylinder.

[0014] The present invention also provides a lifting method for a lifting column that can be lifted, wherein the lifting column that can be lifted comprises a receiving cylinder and a lifting cylinder, wherein the receiving cylinder is used to be buried underground, and the lifting cylinder is lifted and lowered in the receiving cylinder; and further comprises: A shaft sleeve, the shaft sleeve is disposed in the accommodating tube, and the shaft sleeve is fixedly connected to the accommodating tube; An axis bar, the axis bar is rotatably installed in the lifting cylinder, and the axis bar supports the lifting cylinder in the vertical direction; The shaft bar is located in the shaft sleeve, a positioning block is provided on the shaft bar, a vertical guide groove matching the positioning block is provided on the shaft sleeve, and a positioning groove matching the positioning block is provided on one side of the guide groove on the shaft sleeve, and the guide groove is connected with the positioning groove; The lifting method comprises: Lifting cylinder rises: the lifting cylinder in the accommodating cylinder is lifted upward, and the shaft bar is lifted upward together with the lifting cylinder. When the positioning block on the shaft bar moves upward along the guide groove to the position where the positioning groove is located, the shaft bar is rotated, and the positioning block is inserted into the positioning groove. Under the restriction of the positioning block, the shaft bar supports the lifting cylinder in the vertical direction, so that the lifting cylinder remains lifted above the ground; The lifting cylinder descends: the shaft is rotated to move the positioning block out of the positioning groove, the positioning block releases the position restriction on the shaft, the lifting cylinder descends, and the shaft descends with the lifting cylinder. During this process, the positioning block moves downward along the guide groove until the lifting cylinder completely falls into the accommodating cylinder.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the lifting column that can be lifted includes a receiving tube and a lifting tube, the receiving tube is used to be buried underground, and the lifting tube can be lifted and lowered in the receiving tube; it also includes a shaft sleeve and a shaft bar, the shaft sleeve is arranged in the receiving tube, and the shaft sleeve is fixedly connected to the receiving tube; the shaft bar is rotatably installed in the lifting tube, and the shaft bar forms a support for the lifting tube in the vertical direction; the shaft bar is located in the shaft sleeve, and a positioning block is provided on the shaft bar, and a vertical guide groove matching the positioning block is provided on the shaft sleeve, and a positioning groove matching the positioning block is provided on one side of the guide groove on the shaft sleeve, and the guide groove and the positioning groove are connected. Compared with the traditional ground piles driven by the hydraulic, electric and other lifting systems buried underground, the lifting column that can be lifted and lowered is positioned by a purely mechanical structure, which greatly reduces the complexity of the lifting ground piles, and when the lifting column that can be lifted does not need to restrict the passage of vehicles, the lifting tube can be lowered into the receiving tube and hidden, and the ground piles do not need to be stored separately, and the ground piles can be stored locally, which is very convenient. In addition, since the lifting column that can be pulled does not need to restrict the passage of vehicles, the lifting cylinder is lowered into the accommodating cylinder without disassembling the ground pile. This lifting column that can be pulled and lifted is used as a ground pile, which makes the state conversion of the ground pile very convenient. The lifting column that can be pulled can quickly realize the state conversion of the ground pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1It is a schematic diagram of the three-dimensional structure of an embodiment of a lifting column that can be lifted according to the present invention.

[0017] Figure 2 The present invention is a schematic structural diagram of a lifting column that can be lifted, in which a shaft sleeve and a shaft bar are connected in one embodiment.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of a shaft sleeve in an embodiment of a lifting column that can be lifted according to the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the shaft bar in one embodiment of the lifting column that can be lifted according to the present invention.

[0020] Figure 5 for Figure 1 Enlarged view of part A.

[0021] Figure 6 This is a schematic diagram of the internal structure of a lifting cylinder in an embodiment of a lifting column that can be lifted according to the present invention.

[0022] Figure 7 The figure is a schematic diagram of the installation of the tension spring in one embodiment of the lifting column capable of lifting of the present invention.

[0023] Figure 8 for Figure 7 Enlarged view of part B.

[0024] Fig. 9 This is a schematic diagram of the internal structure of the accommodating cylinder in one embodiment of the lifting column that can be lifted according to the present invention.

[0025] Fig.10 It is a schematic structural diagram of an anti-drop sleeve in an embodiment of a lifting column that can be lifted according to the present invention.

[0026] Fig.11 It is a top view of an embodiment of a lifting column that can be lifted according to the present invention.

[0027] In the figure, the various numbers are indicated as: accommodating cylinder 10, lower end cover 11, accommodating cylinder body 12, accommodating cylinder cover 13, second support ring 14, second bolt 15, lifting cylinder 20, lifting cylinder body 21, lifting cylinder cover 22, tension spring 23, first hanging ring 24, second hanging ring 25, first support ring 26, first bolt 27, handle groove 28, sleeve 30, guide groove 31, positioning groove 32, internal thread 33, shaft bar 40, positioning block 41, triangular lock 42, limiting top cap 43, limiting nut 44, anti-drop sleeve 50, external thread 51, handle 60. DETAILED DESCRIPTION

[0028] 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.

[0029] In one embodiment, a lifting column is provided, such as Figure 1 As shown, the lifting column that can be lifted includes a accommodating cylinder 10 and a lifting cylinder 20. Both the accommodating cylinder 10 and the lifting cylinder 20 are metal cylinders with a hollow interior and can be made of stainless steel. The accommodating cylinder 10 is used to be buried underground, for example, it can be buried on the road in front of the gate of an enterprise or unit or on a sidewalk or non-motorized vehicle lane to serve as a ground pile to restrict traffic. The lifting cylinder 20 can be lifted and lowered in the accommodating cylinder 10. When the lifting cylinder 20 is lifted from the accommodating cylinder 10, a ground pile is formed on the road surface. When the lifting cylinder 20 is lowered into the accommodating cylinder 10, it can be hidden and no longer serves the purpose of restricting traffic.

[0030] like Figure 2-4 As shown, the lifting column that can be lifted also includes a sleeve 30 and a shaft bar 40. The sleeve 30 is hollow, and the thickness of the shaft bar 40 matches the size of the inner hole of the sleeve 30. The sleeve 30 is arranged in the receiving tube 10, and the sleeve 30 is fixedly connected to the receiving tube 10. In this embodiment, the lower end of the sleeve 30 is fixedly connected to the lower end cover 11 of the receiving tube 10, and the lower end of the sleeve 30 can be welded to the middle position of the lower end cover 11. The shaft bar 40 is rotatably installed in the lifting cylinder 20. The rotatability here includes two situations. One is that the shaft bar 40 can rotate relative to the lifting cylinder 20, so that it can also rotate relative to the sleeve 30. The other is that the shaft bar 40 can rotate relative to the receiving tube 10 and the sleeve 30 together with the lifting cylinder 20. In these two situations, the shaft bar 40 can support the lifting cylinder 20 in the vertical direction, that is, when the lifting cylinder 20 is lifted from the receiving tube 10, the shaft bar 40 can support the lifting cylinder 20 so that the lifting cylinder 20 remains in a lifted state.

[0031] like Figure 2-4As shown, the shaft bar 40 is located in the shaft sleeve 30, and a positioning block 41 is provided on the shaft bar 40. In this embodiment, the positioning block 41 is located at the bottom of the shaft bar 40. There are two positioning blocks 41, which are distributed on both sides of the lower end of the shaft bar 40, so that support can be formed on both sides, which is conducive to maintaining stability. A vertical guide groove 31 matching the positioning block 41 is provided on the shaft sleeve 30. There are also two guide grooves 31, which are distributed on both sides of the shaft sleeve 30, and a positioning groove 32 matching the positioning block 41 is provided on one side of the guide groove 31 on the shaft sleeve 30. There are also two positioning grooves 32, which are respectively located on one side of the top of the guide groove 31 on both sides. In this embodiment, the positioning groove 32 is a transverse groove, and the guide groove 31 is connected with the corresponding positioning groove 32, so that the positioning block 41 can be smoothly moved from the guide groove 31 to the positioning groove 32.

[0032] Based on the above embodiments, it can be known that the lifting column that can be lifted is used as a ground pile on the road to restrict the passage of vehicles when in use. When the lifting cylinder 20 is located in the accommodating cylinder 10 and needs to be lifted, the lifting cylinder 20 is directly lifted upward. During the lifting process of the lifting cylinder 20, the shaft bar 40 is driven to move upward. When the lifting cylinder 20 rises into place, the positioning block 41 at the bottom of the shaft bar 40 just moves to the side of the positioning groove 32. At this time, by rotating the shaft bar 40, the positioning blocks 41 on both sides of the bottom of the shaft bar 40 are distributed and inserted into the positioning grooves 32 on both sides of the top of the sleeve 30. The height of the shaft bar 40 can be positioned, and the shaft bar 40 supports the lifting cylinder 20, and the lifting cylinder 20 remains in a raised state. When the lifting cylinder 20 needs to fall into the accommodating cylinder 10 to remove the restriction on the passage of vehicles, the shaft 40 is rotated so that the positioning block 41 at the bottom of the shaft 40 is moved out of the positioning groove 32, and the shaft 40 is no longer positioned. Under the action of gravity, the lifting cylinder 20 and the shaft 40 can automatically move downward. During the downward movement, the positioning blocks 41 on both sides move downward along the guide grooves 31 on both sides of the sleeve 30.

[0033] Compared with the traditional ground piles driven by hydraulic, electric and other lifting systems buried underground, the lifting column that can be pulled up and down is lifted and positioned by a purely mechanical structure, which greatly reduces the complexity of the lifting piles. When the lifting column that can be pulled up does not need to restrict the passage of vehicles, the lifting cylinder 20 can be lowered into the receiving cylinder 10 and hidden, and there is no need to store the ground piles separately, and the ground piles can be stored locally, which is very convenient. In addition, since the lifting column that can be pulled up does not need to restrict the passage of vehicles, the lifting cylinder 20 is lowered into the receiving cylinder 10, and the ground piles do not need to be disassembled. This lifting column that can be pulled up and down is used as a ground pile, which makes the state conversion of the ground piles very convenient, and the lifting column that can be pulled up can quickly realize the state conversion of the ground piles.

[0034] Further, in another embodiment, Figure 1As shown, a lock structure is provided at the top of the shaft 40 of the lifting column that can be lifted, so as to control the rotation of the shaft 40 by a key matching the lock structure. By setting the lock structure and using a matching key to control the rotation of the shaft 40, on the one hand, the rotation of the shaft 40 is made more convenient, and on the other hand, it can prevent relevant personnel from arbitrarily controlling the lifting cylinder 20 to descend into the accommodating cylinder 10 without permission.

[0035] Combination Figure 5 As shown, in this embodiment, the top surface of the shaft 40 is exposed on the top surface of the lifting cylinder 20, and the lock structure is a triangular lock 42 arranged on the top surface of the shaft 40, which can be opened by a triangular hole key matching the triangular lock 42.

[0036] In other embodiments, a lock structure may also be provided between the top of the lifting cylinder 20 and the shaft 40. For example, a lock core is installed on the top of the lifting cylinder 20, and the shaft 40 is connected to the lock core. The lock core can be opened and turned by a key matching the lock core to drive the shaft 40 to rotate.

[0037] Further, in another embodiment, in combination Figure 1-4 As shown, the lifting column that can be lifted is provided with a tension spring between the lifting cylinder 20 and the shaft 40. When the shaft 40 is lifted upward along the sleeve 30 to a position, under the action of the tension spring, the shaft 40 rotates and causes the positioning block 41 to be inserted into the positioning groove 32. A plurality of tension springs can be arranged around the shaft 40. When the positioning block 41 is located in the guide groove 31, the tension spring is in a stretched state to store energy. When the positioning block 41 moves to the positioning groove 32 at the top of the guide groove 31, the shaft 40 rotates under the tension of the tension spring, and the positioning block 41 is inserted into the positioning groove 32. The tension spring releases a part of the tension. When the shaft 40 rotates, the positioning block 41 moves out of the positioning groove 32, and the tension spring is stretched again to store energy.

[0038] Further, in another embodiment, Figure 1 and Figure 6As shown, the lifting cylinder 20 in the lifting column that can be lifted includes a lifting cylinder body 21 and a lifting cylinder cover 22. The lifting cylinder cover 22 is consistent in size with the top of the lifting cylinder body 21, and the lifting cylinder cover 22 just completely covers the top of the lifting cylinder body 21. The upper end of the shaft 40 is rotatably mounted on the lifting cylinder cover 22, that is, the shaft 40 can rotate relative to the lifting cylinder cover 22, and the shaft 40 supports the lifting cylinder cover 22 in the vertical direction. In this embodiment, a through hole for passing the shaft 40 is provided in the middle of the lifting cylinder cover 22, a limiting top cap 43 is provided on the top of the shaft 40, and a limiting nut 44 is provided on the shaft 44 at the lower side of the lifting cylinder cover 22, so that the lifting cylinder cover 22 is supported in the vertical direction by the limiting top cap 43 and the limiting nut 44, and the spacing between the limiting top cap 43 and the limiting nut 44 is slightly larger than the thickness of the lifting cylinder cover 22, so as to prevent the limiting top cap 43 and the limiting nut 44 from clamping the lifting cylinder cover 22 and making it difficult to rotate.

[0039] like Figure 7-8 As shown, in this embodiment, the tension spring 23 is arranged between the lifting cylinder cover 22 and the shaft bar 40, one end of the tension spring 23 is connected to the bottom of the lifting cylinder cover 22 through the first hanging ring 24, the top of the first hanging ring 24 is provided with a stud screwed to the bottom of the lifting cylinder cover 22, the other end of the tension spring 23 is connected to the side of the shaft bar 40 through the second hanging ring 25, and one side of the second hanging ring 25 is screwed to the side of the shaft bar 40 through the stud. In other embodiments, the tension spring 23 can also be arranged between the inner wall of the lifting cylinder body 21 and the shaft bar 40. However, in this embodiment, by arranging the tension spring 23 between the lifting cylinder cover 22 and the shaft bar 40, it is convenient to assemble the tension spring 23, the lifting cylinder cover 22 and the shaft bar 40 as a whole in the lifting cylinder body 21.

[0040] The lifting cylinder cover 22 is detachably mounted on the top of the lifting cylinder body 21. Figure 6 As shown, in this embodiment, a first support ring 26 is provided at the inner top of the lifting cylinder body 21, and the first support ring 26 can be fixed to the inner top of the lifting cylinder body 21 by welding. The lifting cylinder cover 22 is connected to the first support ring 26 by a first bolt 27. The lifting cylinder cover 22 and the first support ring 26 are respectively provided with screw holes matching the first bolts. There are four first bolts 27, which are evenly distributed along the circumference. By detachably installing the lifting cylinder cover 22 on the top of the lifting cylinder body 21, the overall assembly and subsequent maintenance of the lifting column that can be lifted are facilitated.

[0041] Further, in another embodiment, Fig. 9As shown, the accommodating cylinder 10 in the lifting column that can be lifted includes an accommodating cylinder body 12 and an accommodating cylinder cover 13. The accommodating cylinder cover 13 is used to be arranged at the top of the accommodating cylinder body 12 to close the gap between the lifting cylinder body 21 and the accommodating cylinder body 12. A second support ring 14 is provided at the inner top of the accommodating cylinder body 12. The second support ring 14 can be fixed to the inner top of the accommodating cylinder body 12 by welding. The accommodating cylinder cover 13 is connected to the second support ring 14 by a second bolt 15. Corresponding screw holes are provided between the accommodating cylinder cover 13 and the second support ring 14. There are four second bolts 15 distributed along the circumferential direction. The outer diameter of the lifting cylinder body 21 matches the inner diameter of the accommodating cylinder cover 13. Here, the inner diameter of the accommodating cylinder cover 13 is slightly larger than the outer diameter of the lifting cylinder body 21, so that the lifting cylinder 20 can be lifted and lowered smoothly.

[0042] Further, in another embodiment, Figure 2 and Fig.11 As shown, the lifting column that can be lifted is provided with an anti-dropping sleeve 50 on the shaft 40, and the anti-dropping sleeve 50 prevents the shaft 40 from falling out from the top of the shaft sleeve 30. The anti-dropping sleeve 50 is located above the positioning block 41, and the anti-dropping sleeve 50 is fixedly connected to the top of the shaft sleeve 30, as shown in FIG. Fig.11 The anti-drop sleeve 50 includes an outer sleeve and an inner sleeve, the outer sleeve and the inner sleeve are connected at the top as a whole, the shaft 40 passes through the inner sleeve of the anti-drop sleeve 50, and the outer wall of the inner sleeve is provided with an external thread 51, such as Figure 3 As shown, an internal thread 33 matching the external thread 51 is provided on the top of the shaft sleeve 30 , so that the anti-dropping sleeve 50 is screwed on the top of the shaft sleeve 30 .

[0043] Further, in another embodiment, Figure 1 and Figure 5 As shown, the lifting column that can be lifted is provided with a handle 60 at the top of the lifting cylinder 20, and the lifting cylinder 20 can be easily lifted upward by the handle 60. In this embodiment, the handle 60 is fixed vertically on the top of the lifting cylinder 20.

[0044] Combination Fig.11 As shown, in another embodiment, a handle groove 28 is provided on the lifting cylinder cover 22 of the lifting cylinder 20, and both sides of the handle 60 are hinged at both ends of the handle groove 20, so that when the handle 60 is not in use, the handle 60 can be rotated into the handle groove 20, so that the top surface of the lifting cylinder 20 remains flush with the road surface.

[0045] In one embodiment, a lifting method of a lifting column that can be lifted is provided. The method uses the lifting column that can be lifted in the previous embodiment. The lifting method includes two aspects: lifting the lifting cylinder and lowering the lifting cylinder. In this embodiment, The lifting cylinder ascending includes: pulling the lifting cylinder 20 located in the accommodating cylinder 10 upward, and pulling the shaft 40 upward together with the lifting cylinder 20, and when the positioning block 41 on the shaft 40 moves upward along the guide groove 31 to the position of the positioning groove 32, the shaft 40 is rotated, and the positioning block 41 is inserted into the positioning groove 32. Under the restriction of the positioning block 41, the shaft 40 supports the lifting cylinder 20 in the vertical direction, so that the lifting cylinder 20 remains lifted out of the ground.

[0046] The lifting cylinder descends: the shaft 40 is rotated to move the positioning block 41 out of the positioning groove 32. The positioning block 41 releases the position restriction on the shaft 40, and the lifting cylinder 20 descends. The shaft 40 descends with the lifting cylinder 20. During this process, the positioning block 41 moves downward along the guide groove 31 until the lifting cylinder 20 completely falls into the accommodating cylinder 10.

[0047] Compared with the traditional method of lifting and lowering piles driven by hydraulic, electric and other lifting systems buried underground, the lifting and lowering method of the lifting column that can be pulled is to lift and position through a purely mechanical structure, which greatly reduces the complexity of the lifting piles. In addition, when there is no need to restrict the passage of vehicles, the lifting column that can be pulled in this method can lower the lifting cylinder 20 into the accommodating cylinder 10 and hide it. There is no need to store the piles separately, and the piles can be stored locally, which is very convenient. In addition, since the lifting column that can be pulled does not need to restrict the passage of vehicles, the lifting cylinder 20 is lowered into the accommodating cylinder 10, and there is no need to disassemble the piles. This lifting and lifting type lifting column is used as a pile, which makes the state conversion of the piles very convenient. The lifting column that can be pulled can quickly realize the state conversion of the piles.

[0048] 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.

[0049] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting column that can be lifted, comprising a receiving cylinder and a lifting cylinder, wherein the receiving cylinder is used to be buried underground, and the lifting cylinder is arranged in the receiving cylinder in a liftable manner; characterized in that: Also includes: A shaft sleeve, the shaft sleeve is disposed in the accommodating tube, and the shaft sleeve is fixedly connected to the accommodating tube; An axis bar, the axis bar is rotatably installed in the lifting cylinder, and the axis bar supports the lifting cylinder in the vertical direction; The shaft bar is located in the shaft sleeve, a positioning block is provided on the shaft bar, a vertical guide groove matching the positioning block is provided on the shaft sleeve, and a positioning groove matching the positioning block is provided on one side of the guide groove on the shaft sleeve, and the guide groove is connected with the positioning groove.

2. The lifting column capable of lifting according to claim 1, characterized in that: A lock structure is provided between the top of the shaft or the top of the lifting cylinder and the shaft, so as to control the rotation of the shaft by a key matching the lock structure.

3. The lifting column capable of lifting according to claim 2, characterized in that: The top surface of the shaft is exposed on the top surface of the lifting cylinder, and the locking structure is a triangular lock arranged on the top surface of the shaft.

4. The lifting column capable of lifting according to claim 1, characterized in that: A tension spring is provided between the lifting cylinder and the shaft bar. When the shaft bar is pulled upward along the shaft sleeve to a certain position, the shaft bar rotates under the action of the tension spring and causes the positioning block to be clamped into the positioning groove.

5. The lifting column capable of lifting according to claim 4, characterized in that: The lifting cylinder includes a lifting cylinder body and a lifting cylinder cover. The upper end of the axis is rotatably mounted on the lifting cylinder cover, and the axis supports the lifting cylinder cover in the vertical direction. One end of the tension spring is connected to the bottom of the lifting cylinder cover through a first hanging ring, and the other end is connected to the side of the axis through a second hanging ring. The lifting cylinder cover is detachably mounted on the top of the lifting cylinder body.

6. The lifting column capable of lifting according to claim 5, characterized in that: A first support ring is provided on the top of the inner side of the lifting cylinder, and the lifting cylinder cover is connected to the first support ring through a first bolt; The accommodating cylinder comprises an accommodating cylinder body and an accommodating cylinder cover. A second support ring is provided on the top inner side of the accommodating cylinder body. The accommodating cylinder cover is connected to the second support ring via a second bolt. The outer diameter of the lifting cylinder matches the inner diameter of the accommodating cylinder cover.

7. The lifting column capable of lifting according to claim 5, characterized in that: The lifting cylinder cover is provided with a through hole for passing the shaft bar, the top of the shaft bar is provided with a limiting top cap, and the shaft bar is provided with a limiting nut on the lower side of the lifting cylinder cover.

8. The lifting column capable of lifting according to claim 1, characterized in that: An anti-dropout sleeve is sleeved on the shaft bar, the anti-dropout sleeve is located above the positioning block, and the anti-dropout sleeve is fixedly connected to the top of the shaft sleeve.

9. The lifting column capable of lifting according to claim 1, characterized in that: A handle is provided on the top of the lifting cylinder.

10. A lifting method for a lifting column capable of being lifted, characterized in that: The lifting column that can be lifted includes a receiving cylinder and a lifting cylinder, wherein the receiving cylinder is used to be buried underground, and the lifting cylinder is arranged in the receiving cylinder in a liftable manner; Also includes: A shaft sleeve, the shaft sleeve is disposed in the accommodating tube, and the shaft sleeve is fixedly connected to the accommodating tube; An axis bar, the axis bar is rotatably installed in the lifting cylinder, and the axis bar supports the lifting cylinder in the vertical direction; The shaft bar is located in the shaft sleeve, a positioning block is provided on the shaft bar, a vertical guide groove matching the positioning block is provided on the shaft sleeve, and a positioning groove matching the positioning block is provided on one side of the guide groove on the shaft sleeve, and the guide groove is connected with the positioning groove; The lifting method comprises: Lifting cylinder rises: the lifting cylinder in the accommodating cylinder is lifted upward, and the shaft bar is lifted upward together with the lifting cylinder. When the positioning block on the shaft bar moves upward along the guide groove to the position where the positioning groove is located, the shaft bar is rotated, and the positioning block is inserted into the positioning groove. Under the restriction of the positioning block, the shaft bar supports the lifting cylinder in the vertical direction, so that the lifting cylinder remains lifted above the ground; The lifting cylinder descends: the shaft is rotated to move the positioning block out of the positioning groove, the positioning block releases the position restriction on the shaft, the lifting cylinder descends, and the shaft descends with the lifting cylinder. During this process, the positioning block moves downward along the guide groove until the lifting cylinder completely falls into the accommodating cylinder.

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