Top hoisting structure of ethylene distillation tower

Abstract

The utility model discloses an ethylene distillation tower top lifting structure, which belongs to the field of lifting appliances and comprises a tower body, a lower support is arranged on the side wall of the tower body close to the top, a vertical lifting column is supported and rotatably connected on the lower support, one side of the top of the vertical lifting column is integrally connected with a horizontal lifting rod, and a lifting hook is arranged at the end part of the horizontal lifting rod; a lower support is arranged on the side wall of the tower body, an upper support is arranged on the side wall of the tower body above the lower support, the vertical davit penetrates through the upper support, a plurality of vertical penetrating stop holes are circumferentially formed in the upper support with the vertical davit as the center, an elastic telescopic column is arranged on the side wall of the vertical davit above the upper support, and the elastic telescopic column can stretch into the vertical penetrating stop holes to limit rotation of the vertical davit; and a rotating fulcrum of the lever is arranged on the side wall of the vertical davit, and a power arm of the lever can drive the elastic telescopic column to be separated from the vertical penetrating stop hole and drive the vertical davit to rotate. According to the utility model, the free rotation positioning of the vertical davit can be realized, and when the vertical davit is locked, the operation is more convenient and safer.

Description

Technical Field

[0001] This utility model relates to the field of lifting devices, specifically to a lifting structure for the top of an ethylene distillation tower. Background Technology

[0002] In order to install and disassemble internal components, and replace or replenish packing, chemical treatment towers often have a lifting column installed at the top of the tower. The lifting column should be positioned so that there is a suitable angle between the center line of the lifting column and the center line of the manhole, so that a person can stand on the platform to operate the handle and the vertical line of the lifting column can be rotated to the vicinity of the manhole for inserting or removing tower internal components through the manhole.

[0003] The general structure of the lifting column and its installation on the treatment tower are as follows: Figure 4 As shown. In use, by turning the handle 100, the hook rotates to a certain angle, and the stop pin 101 and the stop pin 102 cooperate to stop the rotation of the hook. The shortcomings of this structure are that the stop pin 102 fixes the rotation range of the hook, and the rotation angle cannot be adjusted according to the actual situation on site. In addition, when the hook is rotated to the position of the stop pin 102, it cannot be fixed, which increases the risk during hoisting.

[0004] To address the aforementioned problems, this utility model designs and manufactures a top lifting structure for an ethylene distillation tower to overcome the aforementioned defects. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model provides an ethylene distillation tower top lifting structure that enables free rotation and positioning of the vertical lifting column, and makes operation more convenient and safer when the vertical lifting column is locked.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A lifting structure for the top of an ethylene distillation tower, comprising a tower body, a lower support provided on the side wall near the top of the tower body, a vertical lifting column supported and rotatably connected on the lower support, a horizontal lifting rod integrally connected to one side of the top of the vertical lifting column, and a lifting hook provided at the end of the horizontal lifting rod;

[0007] An upper support is provided on the side wall of the tower above the lower support. The vertical hanging column passes through the upper support. The upper support has several vertical through-stop holes circumferentially centered on the vertical hanging column. An elastic telescopic column is provided on the side wall of the vertical hanging column above the upper support. The elastic telescopic column can extend into the vertical through-stop holes to restrict the rotation of the vertical hanging column.

[0008] It also includes a lever, the fulcrum of which is set on the side wall of the vertical column, and the resistance arm of the lever is provided with a pull rope. The lower end of the pull rope is connected to the upper end of the elastic telescopic column. The power arm of the lever can drive the elastic telescopic column to disengage from the vertical through stop hole and drive the vertical column to rotate.

[0009] Preferably, an upper connecting plate and a lower connecting plate are provided on the side wall of the vertical hanging column above the upper support. Both the upper connecting plate and the lower connecting plate are provided with through guide holes, and the elastic telescopic column can be guided to rise and fall through the guide holes on the upper connecting plate and the lower connecting plate.

[0010] A limiting platform is provided on the elastic telescopic column between the upper connecting plate and the lower connecting plate, and the limiting platform can limit the descent position of the elastic telescopic column.

[0011] A compression spring is fitted onto the elastic telescopic column between the limiting platform and the upper connecting plate.

[0012] Preferably, the upper connecting plate is provided with a mounting hole, and a spring cover is detachably connected to the mounting hole. The guide hole of the upper connecting plate is provided on the spring cover.

[0013] Preferably, the outer diameter of the spring and the outer diameter of the limiting platform are both smaller than the diameter of the mounting hole.

[0014] Preferably, the elastic force of the compression spring allows the lower end of the elastic telescopic column to extend into the vertical through stop hole when the limiting platform abuts against the lower connecting plate.

[0015] Preferably, the lever includes a U-shaped rod, and the vertical hanging column is located in the U-shaped rod;

[0016] The pivot point includes two pivot shafts, and the two inner sidewalls of the U-shaped rod are connected to the outer sidewall of the vertical column through the pivot shafts.

[0017] Preferably, a power arm is connected to the outer side of the closed end of the U-shaped rod, a pull rod is connected to the open end of the U-shaped rod, and the pull rope is connected to the middle position of the pull rod.

[0018] Preferably, the end of the lever's power arm can be fitted with a sleeve.

[0019] Preferably, two semi-circular sleeves are fitted on the vertical column at the fulcrum of the lever rotation, and the two semi-circular sleeves can be spliced ​​together to form a circular sleeve and then fitted and fixed on the vertical column.

[0020] Both of the two semicircular sleeves have radial rotating holes on their outer outer walls. After the two semicircular sleeves are spliced ​​together, the two radial rotating holes are on the same radial line of the circular sleeve.

[0021] The rotating shaft is rotatably connected to the radial rotating hole.

[0022] Preferably, a rain cover is provided on the vertical hanging column above the lower support.

[0023] The advantages of this utility model are:

[0024] 1. This utility model utilizes a lever to enable the elastic telescopic column to disengage from and extend into the vertical through stop hole by pressing down and releasing the power arm. This not only achieves the rotation and positioning of the vertical column at the corresponding angle, but also makes the operation more convenient and safer when the vertical column is locked. In addition, the lever principle makes it more labor-saving and safer than the traditional structure.

[0025] 2. The structure of the elastic telescopic column of this utility model can automatically extend into the vertical through stop hole with the help of a compression spring to complete the positioning of the vertical hanging column without the action of external force on the power arm; in addition, the limiting platform structure can restrict the downward movement of the elastic telescopic column, indirectly ensuring the initial position of the lever power arm, making it convenient for the operator to operate the power arm.

[0026] 3. The lever of this utility model ensures that the fulcrum of rotation is located at the center of the vertical column by means of a U-shaped rod, and the lever drives the vertical column to rotate by means of the rotating shafts on both sides of the vertical column, so that the vertical column is balanced and stable under force.

[0027] 4. The rotating shaft of this utility model is connected to the vertical hanging column through two semi-circular sleeves, which facilitates the machining of the radial rotating hole that mates with the rotating shaft and ensures the normal installation of the rotating shaft. Attached Figure Description

[0028] Figure 1 A front view of a lifting structure for the top of an ethylene distillation tower;

[0029] Figure 2 This is a cross-sectional view of section AA of the present invention;

[0030] Figure 3 This is a cross-sectional view of the BB section of this utility model;

[0031] Figure 4 This is a front view of a traditional tower-top lifting structure.

[0032] In the diagram: 1. Tower body; 2. Lower support; 3. Vertical lifting column; 4. Upper support; 5. Elastic telescopic column; 6. Lower connecting plate; 7. Limiting platform; 8. Compression spring; 9. Upper connecting plate; 10. Spring cover; 11. Pull rope; 12. Lever; 13. Horizontal lifting rod; 14. Sleeve; 41. Vertical through stop hole; 42. Vertical through hole; 100. Handle; 101. Stop pin; 102. Stop pin; 121. U-shaped rod; 122. Power arm; 123. Pull rod; 124. Rotary shaft; 125. Semicircular sleeve. Detailed Implementation

[0033] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0034] like Figures 1 to 3As shown, an ethylene distillation tower top lifting structure includes a tower body 1. A lower support 2 is provided on the side wall of the tower body 1 near the top. A vertical lifting column 3 is supported and rotatably connected to the lower support 2. A horizontal lifting rod 13 is integrally connected to one side of the top of the vertical lifting column 3. A lifting hook is provided at the end of the horizontal lifting rod 13. Specifically, the lifting hook can be moved above the manhole at the top of the tower by rotating the vertical lifting column 3, which facilitates the insertion or removal of tower internals through the manhole.

[0035] An upper support 4 is provided on the side wall of the tower body 1 above the lower support 2. A vertical hanging column 3 passes through the upper support 4. Specifically, the upper support 4 is provided with a vertical through hole 42. The vertical hanging column 3 passes through the vertical through hole 42 and can rotate in the vertical through hole 42.

[0036] The upper support 4 of this utility model has several vertical through-stop holes 41 arranged around the vertical hanging column 3. The side wall of the vertical hanging column 3 above the upper support 4 is provided with an elastic telescopic column 5. The elastic telescopic column 5 can be inserted into the vertical through-stop holes 41 to restrict the rotation of the vertical hanging column 3. Specifically, by inserting into the vertical through-stop holes 41 at different positions, the vertical hanging column 3 can be rotated and positioned at the corresponding angle, ensuring convenience and safety during the lifting process.

[0037] It also includes a lever 12, the fulcrum of which is set on the side wall of the vertical column 3. The resistance arm of the lever 12 is provided with a pull rope 11, the lower end of which is connected to the upper end of the elastic telescopic column 5. Through the power arm 122 of the lever 12, the elastic telescopic column 5 can be driven to disengage from the vertical through stop hole 41 and the vertical column 3 can be driven to rotate.

[0038] This utility model utilizes the lever 12 to enable the elastic telescopic column 5 to disengage from and extend into the vertical through stop hole 41 by the downward and release action of the power arm 122. This is more labor-saving and safer than the traditional structure. Moreover, the lever 12 can also drive the vertical hanging column 3 to rotate, ultimately satisfying the rotation action requirements of the vertical hanging column 3 at the corresponding angle.

[0039] The upper support 4 of this utility model has an upper connecting plate 9 and a lower connecting plate 6 on the side wall of the vertical hanging column 3. The upper connecting plate 9 is located above the lower connecting plate 6 and there is a gap between the two. Both the upper connecting plate 9 and the lower connecting plate 6 have through guide holes. The guide holes of the two are in the same vertical direction. The elastic telescopic column 5 can be guided to rise and fall through the guide holes on the upper connecting plate 9 and the lower connecting plate, thereby ensuring the fitting accuracy between the elastic telescopic column 5 and the vertical through stop hole 41.

[0040] A limiting platform 7 is provided on the elastic telescopic column 5 between the upper connecting plate 9 and the lower connecting plate 6. The limiting platform 7 can restrict the descent position of the elastic telescopic column 5. A compression spring 8 is sleeved on the elastic telescopic column 5 between the limiting platform 7 and the upper connecting plate 9. The structure at the elastic telescopic column 5 can automatically extend into the vertical through stop hole 41 with the help of the compression spring 8 without the action of external force on the power arm 122, thus completing the positioning of the vertical hanging column 3. In addition, the limiting platform 7 structure can restrict the downward movement of the elastic telescopic column 5, indirectly ensuring the initial position of the power arm 122 of the lever 12, which is convenient for the operator to operate the power arm 122.

[0041] To facilitate the insertion of the elastic telescopic column 5 with the limiting platform 7 between the upper connecting plate 9 and the lower connecting plate 6, and to facilitate the installation of the compression spring 8, the upper connecting plate 9 is provided with a mounting hole. The outer diameter of the spring and the outer diameter of the limiting platform 7 are both smaller than the diameter of the mounting hole. A spring cover 10 is detachably connected to the mounting hole. The guide hole of the upper connecting plate 9 is set on the spring cover 10. When installing the elastic telescopic column 5 and the compression spring 8, first remove the spring cover 10, and finally connect the spring cover 10 to the upper connecting plate 9 with screws.

[0042] When the lever 122 is not subjected to external force, the compression spring 8 will cause the limiting platform 7 to abut against the lower connecting plate 6, and the lower end of the elastic telescopic column 5 can extend into the vertical through stop hole 41.

[0043] The lever 12 of this utility model specifically includes a U-shaped rod 121, with a vertical hanging column 3 located in the U-shaped rod 121. The rotation fulcrum specifically includes two rotating shafts 124. The two inner side walls of the U-shaped rod 121 are connected to the outer side wall of the vertical hanging column 3 through the rotating shafts 124. The lever 12 ensures that the rotation fulcrum is located at the center of the vertical hanging column 3 by means of the U-shaped rod 121. Moreover, the lever 12 drives the vertical hanging column 3 to rotate by means of the rotating shafts 124 on both sides of the vertical hanging column 3, and the vertical hanging column 3 is balanced and stable under force.

[0044] Specifically, a power arm 122 is connected to the outside of the closed end of the U-shaped rod 121. The end of the power arm 122 of the lever 12 can be fitted with a sleeve 14 for easy operation. A pull rod 123 is connected to the open end of the U-shaped rod 121, and a pull rope 11 is connected to the middle position of the pull rod 123.

[0045] In this invention, two semi-circular sleeves 125 are fitted onto the vertical hanging column 3 at the pivot point of the lever 12. These two semi-circular sleeves 125 can be joined together to form a circular sleeve, which is then fitted and fixed onto the vertical hanging column 3, preferably by direct welding. Specifically, each of the two semi-circular sleeves 125 has a radial rotating hole on its outer wall. After the two semi-circular sleeves 125 are joined, the two radial rotating holes are on the same radial line of the circular sleeve. The rotating shaft 124 is rotatably connected to the radial rotating hole. This structure not only facilitates the machining of the radial rotating hole that mates with the rotating shaft 124 but also ensures the proper installation of the rotating shaft 124.

[0046] The lower support 2 of this utility model is preferably provided with a rain cover on the vertical hanging column 3 above it to ensure the protection of the rotating support structure of the lower support 2 and the vertical hanging column 3.

[0047] The specific operation process of this utility model is as follows:

[0048] When it is necessary to rotate the vertical lifting column 3 to adjust the position of the lifting hook, first use the sleeve 14 and the power arm 122 of the lever 12 to cooperate, then press down the sleeve 14, the pull rod 123 at the resistance arm of the lever 12 will pull the elastic telescopic column 5 up through the pull rope 11, the limit platform 7 on the elastic telescopic column 5 will compress the spring 8 upward, and finally the elastic telescopic column 5 will disengage from the vertical through stop hole 41.

[0049] Then push the sleeve 14 around the circumference of the vertical column 3. The lifting hook will rotate with the vertical column 3. When it rotates to the appropriate position, cancel the downward action of the sleeve 14. The compression spring 8 will drive the elastic telescopic column 5 to extend into the vertical through stop hole 41 to complete the rotation angle positioning of the lifting hook.

[0050] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A lifting structure for the top of an ethylene distillation tower, characterized in that, The tower body (1) is provided with a lower support (2) on the side wall near the top of the tower body (1). A vertical hanging column (3) is supported and rotatably connected on the lower support (2). A horizontal hanging rod (13) is integrally connected to one side of the top of the vertical hanging column (3). A lifting hook is provided at the end of the horizontal hanging rod (13). An upper support (4) is provided on the side wall of the tower body (1) above the lower support (2). The vertical hanging column (3) passes through the upper support (4). Several vertical through stop holes (41) are provided on the upper support (4) with the vertical hanging column (3) as the center. An elastic telescopic column (5) is provided on the side wall of the vertical hanging column (3) above the upper support (4). The elastic telescopic column (5) can extend into the vertical through stop holes (41) to restrict the rotation of the vertical hanging column (3). It also includes a lever (12), the fulcrum of which is set on the side wall of the vertical column (3). The end of the resistance arm of the lever (12) is provided with a pull rope (11), the lower end of which is connected to the upper end of the elastic telescopic column (5). Through the power arm (122) of the lever (12), the elastic telescopic column (5) can be driven to disengage from the vertical through stop hole (41) and the vertical column (3) can be driven to rotate.

2. The ethylene distillation tower top lifting structure according to claim 1, characterized in that, The upper connecting plate (9) and the lower connecting plate (6) are provided on the side wall of the vertical hanging column (3) above the upper support (4). The upper connecting plate (9) and the lower connecting plate (6) are provided with through guide holes. The elastic telescopic column (5) can be guided to rise and fall through the guide holes on the upper connecting plate (9) and the lower connecting plate. A limiting platform (7) is provided on the elastic telescopic column (5) between the upper connecting plate (9) and the lower connecting plate (6), and the limiting platform (7) can limit the descent position of the elastic telescopic column (5); A compression spring (8) is fitted on the elastic telescopic column (5) between the limiting platform (7) and the upper connecting plate (9).

3. The ethylene distillation tower top lifting structure according to claim 2, characterized in that, The upper connecting plate (9) is provided with mounting holes, and a spring cover (10) is detachably connected to the mounting holes. The guide hole of the upper connecting plate (9) is provided on the spring cover (10).

4. The ethylene distillation tower top lifting structure according to claim 3, characterized in that, The outer diameter of the spring and the outer diameter of the limiting platform (7) are both smaller than the diameter of the mounting hole.

5. The lifting structure for the top of an ethylene distillation tower according to claim 2, characterized in that, The elastic force of the compression spring (8) allows the lower end of the elastic telescopic column (5) to extend into the vertical through stop hole (41) when the limiting platform (7) abuts against the lower connecting plate (6).

6. The ethylene distillation tower top lifting structure according to claim 1, characterized in that, The lever (12) includes a U-shaped rod (121), and the vertical hanging column (3) is located in the U-shaped rod (121); The pivot point includes two pivot shafts (124), and the two inner walls of the U-shaped rod (121) are connected to the outer wall of the vertical hanging column (3) through the pivot shafts (124).

7. The ethylene distillation tower top lifting structure according to claim 6, characterized in that, The closed end of the U-shaped rod (121) is connected to a power arm (122), the open end of the U-shaped rod (121) is connected to a pull rod (123), and the pull rope (11) is connected to the middle position of the pull rod (123).

8. The ethylene distillation tower top lifting structure according to claim 7, characterized in that, The end of the power arm (122) of the lever (12) can be fitted with a sleeve (14).

9. The ethylene distillation tower top lifting structure according to claim 6, characterized in that, Two semi-circular sleeves (125) are fitted on the vertical hanging column (3) at the pivot point of the lever (12). The two semi-circular sleeves (125) can be spliced ​​together to form a circular sleeve and then fitted and fixed on the vertical hanging column (3). Both of the two semicircular sleeves (125) have radial rotating holes on their outer side walls. After the two semicircular sleeves (125) are spliced ​​together, the two radial rotating holes are on the same radial line of the circular sleeve. The rotating shaft (124) is rotatably connected to the radial rotating hole.

10. The ethylene distillation tower top lifting structure according to claim 1, characterized in that, A rain cover is provided on the vertical hanging column (3) above the lower support (2).

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