Adjustable post for post-tensioned strip

Abstract

The utility model discloses an adjustable post of post-cast strip relates to construction technical field, wherein, adjustable post of post-cast strip includes first post, second post, water drive structure and locking structure, first post has installation cavity, and installation cavity upper end at least partiality is open setting, and first post is used for supporting in ground, and second post is inserted in installation cavity from the open end of installation cavity, and in the movable setting of up and down, water drive structure is located in the installation cavity, and is located the below of second post, to set down with the connection of second post, water drive structure is used to drive first post to move up when water injection, and locking structure is located first post, and locking structure is used to cooperate with the lateral wall of installation cavity, to lock the position of second post in up and down. Such setting makes adjustable post of post-cast strip can adjust the height of up and down according to the difference of floor height, expands the application scope of adjustable post of post-cast strip, and reduces construction cost.

Description

Technical Field

[0001] This utility model relates to the field of construction technology, and in particular to an adjustable post-pouring strip column. Background Technology

[0002] The independent support system of steel columns for post-pouring strips is easy to install and dismantle, effectively solving the common quality problem of concrete cracks caused by the backfilling after the removal of post-pouring strips, reducing the rental cost of formwork at the post-pouring strip, and the independent steel columns can be recycled and reused, making it economical.

[0003] However, in the existing independent support system for post-cast strips, the steel columns of the post-cast strips need to be designed according to the floor height, which has a narrow scope of application. Furthermore, once the design strength is reached, they can only be removed and cannot be recycled. Utility Model Content

[0004] The main purpose of this utility model is to propose an adjustable post-cast strip column, which aims to improve the existing post-cast strip independent support system, where the post-cast strip steel column needs to be designed according to the floor height, has a narrow range of applications, and can only be removed after reaching the design strength, and cannot be recycled.

[0005] To achieve the above objectives, the adjustable post-cast strip column proposed in this utility model includes:

[0006] The first column has a mounting cavity, the upper end of which is at least partially open, and the first column is used to support the ground;

[0007] The second column is inserted into the mounting cavity from the open end of the mounting cavity and is movable in the vertical direction.

[0008] A water-driven structure is disposed within the mounting cavity and located below the second column, connecting to the lower end of the second column. The water-driven structure is used to drive the second column upwards during water injection; and...

[0009] A locking structure is provided on the first column, which is used to cooperate with the side wall of the mounting cavity to lock the second column in the vertically upward position.

[0010] In one embodiment, the water-driven structure includes:

[0011] A water-driven section, disposed within the mounting cavity and located below the second column, is used to drive the second column upward during water expansion; and...

[0012] A water supply unit is provided in connection with the water drive unit, and the water supply unit is used to inject water into the water drive unit.

[0013] In one embodiment, the water drive unit includes a bellows extending vertically; or,

[0014] The water drive unit includes a cylindrical body that extends vertically. A movable plate is movably disposed within the cylindrical body along its vertical direction. The movable plate is tightly abutted against the inner wall of the cylindrical body. The movable plate, the cylindrical body, and the lower end of the first column enclose an inner cavity that communicates with the water supply unit.

[0015] In one embodiment, a through hole is provided on the peripheral side of the first column corresponding to the water drive section;

[0016] The water supply unit is connected to the water drive unit through a connecting pipe passing through the through hole.

[0017] In one embodiment, the water drive unit has a water supply port corresponding to the connecting pipe, and a one-way valve is provided at the water supply port.

[0018] In one embodiment, the locking structure includes a locking part and a mating part. One of the locking part and the mating part is disposed on the side wall of the mounting cavity, and the other is movably disposed on the second column in the vertical direction. The locking part is used to cooperate with the mating part to lock the second column in the vertically upward position.

[0019] In one embodiment, the locking part includes a plurality of wedges, which are spaced apart and arranged in a ring around the periphery of the second column, and are all capable of moving synchronously up and down.

[0020] The inner sidewalls of the first column are arranged close to each other from top to bottom to form the mating part.

[0021] In one embodiment, the second column includes:

[0022] The first column is movably inserted into the mounting cavity in a vertical direction; and...

[0023] The second column is inclined horizontally from bottom to top. The lower end of the second column is connected to the periphery of the first column, and the upper end is connected to the first column through a connecting rod. The second column is used to support the lower mold at the post-cast strip.

[0024] In one embodiment, the sidewall of the mounting cavity is recessed with a sliding groove, which extends vertically.

[0025] The first column has a slider protruding from its periphery, and the slider is slidably disposed in the groove along the vertical direction.

[0026] In one embodiment, the adjustable post-cast strip column further includes a displacement sensor, which is disposed on the first column and faces the second column, and is used to measure the movement distance of the second column.

[0027] In this invention, when cement is poured using a post-cast strip method, the construction workers first support the first column on the ground. Then, based on the floor height, they determine the required height of the adjustable post-cast strip column and control the water-driven structure to inject water. This water injection drives the second column upwards, adjusting its vertical length so that its upper end presses against other supports, thus supporting the beams on both sides of the post-cast strip. Finally, the workers operate the locking structure to lock the second column onto the first column, thus providing support for the adjustable post-cast strip column. This design allows the adjustable post-cast strip column to adjust its vertical height according to different floor heights, adapting to various floor levels, expanding its applicability, and reducing construction costs. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 A schematic diagram of a structural embodiment of the adjustable post-cast strip column provided by this utility model;

[0030] Figure 2 for Figure 1 A partial cross-sectional schematic diagram of an adjustable post-cast strip column.

[0031] Explanation of icon numbers:

[0032] 100. Adjustable post-cast strip column; 1. First column; 11. Slide groove; 2. Second column; 21. First column body; 22. Second column body; 23. Connecting rod; 24. Slider; 3. Water-driven structure; 31. Water-driven part; 32. Water supply part; 33. Connecting pipe; 4. Locking structure; 41. Locking part; 42. Fitting part.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] This invention proposes an adjustable post-cast strip column. It aims to improve upon existing independent support systems for post-cast strips, where the steel columns require design based on floor height, have a narrow applicability, and can only be removed after reaching design strength, preventing recycling.

[0038] Please see Figure 1-2In one embodiment of this utility model, the adjustable post-pouring strip column 100 includes a first column 1, a second column 2, a water-driven structure 3, and a locking structure 4. The first column 1 has a mounting cavity, the upper end of which is at least partially open. The first column 1 is used to support the ground. The second column 2 is inserted into the mounting cavity from the open end and is movably positioned vertically. The water-driven structure 3 is disposed in the mounting cavity and located below the second column 2 to connect to the lower end of the second column 2. The water-driven structure 3 is used to drive the second column 2 to move upward when water is injected. The locking structure 4 is disposed on the first column 1 and is used to cooperate with the side wall of the mounting cavity to lock the second column 2 in the vertically upward position.

[0039] In the technical solution of this utility model, when cement needs to be poured using the post-pouring strip method, firstly, the construction personnel support the first column 1 on the ground. Then, the construction personnel determine the height to be adjusted of the adjustable post-pouring strip column 100 according to the floor height, and control the water-driven structure 3 to inject water into the water-driven structure 3. At this time, the water-driven structure 3 moves to drive the second column 2 to move upward, thereby adjusting the length of the adjustable post-pouring strip column 100 in the vertical direction, so that the upper end of the second column 2 abuts against other supporting members, thereby achieving support for the beams and slabs on both sides of the post-pouring strip. Finally, the construction personnel operate the locking structure 4 to lock the second column 2 onto the first column 1, thereby achieving support for the adjustable post-pouring strip column 100. This design allows the adjustable post-cast strip column 100 to adjust its vertical height according to different floor heights, thus adapting the adjustable post-cast strip column 100 to various floor levels, expanding its applicability and reducing construction costs.

[0040] Of course, in this utility model, the adjustable post-pouring strip column 100 can be reused. When construction is completed and the adjustable post-pouring strip column 100 is no longer needed to support the mold, the construction personnel can first operate the locking structure 4 to release the locking structure 4 from the second column 2, so that the second column 2 can resume its upward and downward movement. Then, the construction personnel can operate the water drive structure 3 to drain the water inside the water drive structure 3. At this time, the driving force of the water drive structure 3 on the second column 2 decreases. Under the action of gravity, the second column 2 moves downward to release the support of the mold until all the water in the water drive structure 3 is drained. At this time, the first column 1 can release its contact with the ground, thereby recovering the adjustable post-pouring strip column 100 so that it can be reused.

[0041] It should be noted that after all the water in the water-driven structure 3 is drained and the second column 2 is retracted into the installation cavity, the construction personnel can operate the locking structure 4 again to lock the second column 2 into the first column 1. This can prevent the second column 2 from moving during transportation or storage, so as not to affect the transportation and storage of the adjustable post-pouring strip column 100.

[0042] It should be noted that, in order to achieve the support of the second column 2 by the water-driven structure 3, in one embodiment of the present invention, the water-driven structure 3 includes a water-driven part 31 and a water supply part 32. The water-driven part 31 is disposed in the mounting cavity and located below the second column 22. The water-driven part 31 is used to drive the second column 2 to move upward when it expands with water. The water supply part 32 is connected to the water-driven part 31 and is used to inject water into the water-driven part 31. With this configuration, when the water-driven structure 3 needs to drive the second column 2 upward to adjust the height of the adjustable post-cast strip column 100, the construction worker operates the water supply unit 32. The water supply unit 32 works to inject water into the water-driven unit 31. At this time, the water-driven unit 31 expands, squeezing the second column 2, thereby driving the second column 2 upward. When the support is completed and the second column 2 needs to be reset, the water supply unit 32 works in the opposite direction to extract the water from the water-driven unit 31. At this time, the water-driven unit 31 contracts, and the second column 2 moves downward to reset under the neutral force.

[0043] Of course, in this utility model, when the water supply unit 32 injects water into the water drive unit 31, it is necessary to further define the specific expansion direction of the water drive unit 31, so as to achieve stable driving of the second column 2 by the water drive unit 31. In one embodiment of this utility model, the water drive unit 31 includes a corrugated pipe, which extends vertically. With this configuration, when the water supply unit 32 injects water into the corrugated pipe, the corrugated pipe extends along the folds under the action of water pressure. At this time, the fold design of the corrugated pipe enables the corrugated pipe to undergo directional deformation, that is, it stretches vertically upwards. However, horizontally, due to the interlocking of the corrugated pipe's waveform, it cannot expand. Thus, the water drive unit 31 achieves directional expansion vertically upwards.

[0044] In another embodiment of this utility model, the water-driven part 31 includes a cylindrical body extending vertically. A movable plate is movably disposed within the cylindrical body, moving vertically. The movable plate is tightly abutting against the inner wall of the cylindrical body. The movable plate, the cylindrical body, and the lower end of the first column 1 enclose an inner cavity, which communicates with the water supply part 32. With this configuration, when the water supply part 32 injects water into the inner cavity, the water pressure in the inner cavity rises. At this time, the cylindrical body can restrict the horizontal deformation of the inner cavity, and the lower end of the first column 1 can restrict the downward deformation of the inner cavity. Therefore, the movable part can be lifted under the action of water pressure, thus moving upwards and causing the inner cavity to deform vertically. Simultaneously, the movable plate drives the second column 2 to move upwards, similarly achieving the upward directional expansion of the water-driven part 31.

[0045] Of course, in other embodiments of this utility model, the expansion of the water drive part 31 in the horizontal direction can be constrained by setting a multi-layer composite material weave, the specific expansion direction of the water drive part 31 can be limited by setting a rigid skeleton, or other structural forms can be adopted. In actual setting, the selection can be made according to the requirements, and this utility model does not limit it.

[0046] It should also be noted that the present invention does not limit the specific number of water-drive units 31. In one embodiment of the present invention, only one water-drive unit 31 may be provided; in another embodiment of the present invention, two water-drive units 31 may be provided, with the two water-drive units 31 spaced apart in the horizontal direction; in yet another embodiment of the present invention, the number of water-drive units 31 may be three or more. In this case, multiple water-drive units 31 may be arranged in a horizontal array or spaced apart along the circumference. Specifically, in actual installation, the selection can be made according to the requirements.

[0047] To further reduce the manufacturing and construction costs of the adjustable post-cast strip column, in this invention, one water supply unit 32 can be configured to correspond to the water drive units 31 of multiple adjustable post-cast strip columns, so that a single water supply unit 32 can sequentially meet the water injection needs of multiple water drive units 31. Specifically, in one embodiment of this invention, the peripheral side of the first column 1 is provided with a through hole corresponding to the water drive unit 31, and the water supply unit 32 is connected to the water drive unit 31 through a connecting pipe 33 passing through the through hole.

[0048] In this embodiment, when the water supply unit 32 needs to supply water to the water drive unit 31 of one of the adjustable post-cast strip columns, the water supply unit 32 is connected to the corresponding connecting pipe 33. The connecting pipe 33 passes through the corresponding through hole to extend into the corresponding water drive unit 31. At this time, the construction personnel operate the water supply unit 32, and the water supply unit 32 supplies water to the water drive unit 31 so that the water drive unit 31 can drive the second column 2 to move upward. After the locking structure 4 locks the second column 2 onto the first column 1, the construction personnel can release the lock. Except for the connection between the water supply unit 32 and the connecting pipe 33, or the connection between the connecting pipe 33 and the water drive unit 31, thereby disconnecting the connection between the water supply unit 32 and the water drive unit 31, so that the water supply unit 32 can connect to the water drive unit 31 of another adjustable post-cast strip column to supply water to the other water drive unit 31, realizing the one-to-many working pairing of the water supply unit 32. Multiple adjustable post-cast strip columns only need to be equipped with one water supply unit 32, so as to reduce the manufacturing cost and construction cost of the adjustable post-cast strip column.

[0049] It should be noted that in this embodiment, before the construction personnel make contact with the water supply unit 32 and the water drive unit 31, the locking structure 4 has already locked the second column 2 onto the first column 1. Therefore, even if water flows out of the water drive unit 31, causing the water pressure in the water drive unit 31 to drop, the second column 2 will still not move downwards to reset. In this way, the manufacturing cost and construction cost of the adjustable post-pouring strip column can be reduced while ensuring the support stability of the adjustable post-pouring strip column.

[0050] If it is necessary to further improve the support strength of the adjustable post-cast strip column, the water pressure in the water drive section 31 can remain stable after the water supply section 32 is disconnected from the water drive section 31. Therefore, in a further embodiment of this utility model, the water drive section 31 is provided with a water supply port corresponding to the connecting pipe 33, and a one-way valve is provided at the water supply port. With this configuration, when the water supply unit 32 is connected to the water drive unit 31 to supply water to the water drive unit 31, the water flow from the water supply unit 32 to the water drive unit 31 can drive the one-way valve to open, thereby increasing the water pressure in the water drive unit 31. When the water supply unit 32 is disconnected from the water drive unit 31, the one-way valve will remain closed for a long time to prevent water in the water drive unit 31 from flowing out of the water supply port, thereby ensuring the stability of the water pressure in the water drive unit 31. This allows the water drive unit 31 to still provide stable support for the second column 2 after the water supply unit 32 is disconnected, thereby improving the support strength of the adjustable post-cast strip column.

[0051] Understandably, after construction is completed, when it is necessary to drain the water from the water drive unit 31, the construction personnel can manually open the one-way valve to connect the water supply port, so that the water in the water drive unit 31 can be discharged from the water supply port, thereby realizing the reset of the second column 2 and the storage of the adjustable post-pouring strip column.

[0052] Furthermore, when the adjustable post-cast strip column is in operation, to ensure the locking effect of the locking structure 4 on the second column 2, and thus the supporting effect of the adjustable post-cast strip column, in one embodiment of this utility model, the locking structure 4 includes a locking part 41 and a mating part 42. One of the locking part 41 and the mating part 42 is disposed on the side wall of the mounting cavity, and the other is movably disposed on the second column 2 in the vertical direction. The locking part 41 is used to cooperate with the mating part 42 to lock the second column 2 in the vertically upward position. With this configuration, when it is necessary to lock the second column 2 in the vertically upward direction, the locking part 41 moves to cooperate with the mating part 42, thereby completing the locking of the second column 2 and locking the second column 2 to the first column 1.

[0053] Of course, this utility model does not limit the specific structural form of the locking part 41 and the mating part 42. In one embodiment of this utility model, the locking part 41 includes a plurality of wedges, which are spaced apart and arranged around the periphery of the second column 2, and are all synchronously movable in the up and down direction. The inner sidewalls of the first column 1 are arranged close to each other from top to bottom to form the mating part 42. With this arrangement, when it is necessary to lock the second column 2 in the up and down position, the plurality of wedges move downward synchronously. At this time, since the inner sidewalls of the first column 1 are arranged close to each other from top to bottom, the distance between the first column 1 and the second column 2 gradually decreases during the downward movement of the plurality of wedges, until the plurality of wedges are all engaged between the first column 1 and the second column 2, thus completing the fixation of the second column 2 in the up and down position.

[0054] In another embodiment of this utility model, the locking part 41 includes a fastening bolt, and the mating part 42 includes a threaded hole. The threaded hole is disposed on the peripheral side of the first column 1, and the fastening bolt is disposed in the threaded hole. With this arrangement, when it is necessary to lock the second column 2 in the up-down position, the fastening bolt rotates so that the bolt head of the fastening bolt abuts against the peripheral side of the second column 2, thus achieving the locking of the second column 2.

[0055] It should be noted that, in this utility model, the support capacity of the adjustable post-cast strip column can be further improved. Specifically, in one embodiment of this utility model, the second column 2 includes a first column 21 and a second column 22. The first column 21 is movably inserted into the mounting cavity in the vertical direction. The second column 22 is inclined in the horizontal direction from bottom to top. The lower end of the second column 22 is connected to the periphery of the first column 21, and the upper end is connected to the first column 21 through a connecting rod 23. The second column 22 is used to support the lower mold at the post-cast strip. With this configuration, when the adjustable post-cast strip column is in operation, the upper end of the first column 21 abuts against other supporting members, thereby supporting the beams on both sides of the post-cast strip. The upper end of the second column 22 directly abuts against the bottom beam of the post-cast strip, thus supporting the lower formwork of the post-cast strip. At the same time, since the lower end of the second column 22 is connected to the periphery of the first column, and the upper end is connected to the first column 21 through the connecting rod 23, the first column 21 and the connecting rod 23 provide support for the second column 22. In addition, the connecting rod 23 also increases the support area of ​​the second column 2 for the lower formwork of the post-cast strip, thereby further improving the support stability of the adjustable post-cast strip column.

[0056] To ensure the support accuracy of the second column 22 and to ensure that the second column 22 can accurately abut against the lower mold position at the post-cast strip, in a further embodiment of this utility model, a groove 11 is recessed in the side wall of the mounting cavity, the groove 11 extending vertically, and a slider 24 is protruding from the periphery of the first column 21, the slider 24 slidingly disposed within the groove 11. With this configuration, when the first column 21 moves vertically, the slider 24 moves together with the first column 21. Since the slider 24 is movably disposed within the groove 11, during the vertical movement of the first column 21, the slider 24 can restrict the rotation of the first column 21 along its vertically extending axis, thereby maintaining the accuracy of the angle of the first column 21 and thus maintaining the support accuracy of the second column 22.

[0057] Furthermore, to enable construction personnel to constantly monitor the movement distance of the second column 2, i.e., the height of the adjustable post-cast strip column, in one embodiment of this invention, the adjustable post-cast strip column further includes a displacement sensor. The displacement sensor is located on the first column 1 and faces the second column 2. The displacement sensor is used to measure the movement distance of the second column 2. With this configuration, as the second column 2 moves vertically, the displacement sensor can constantly detect the movement distance of the second column 2, and then calculate the height of the adjustable post-cast strip column based on the movement distance. This allows construction personnel to control the water supply to the water drive section 31 according to the height of the adjustable post-cast strip column, ensuring stable support while preventing damage from impacts with other supporting components.

[0058] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An adjustable post-cast strip column, characterized in that, include: The first column has a mounting cavity, the upper end of which is at least partially open, and the first column is used to support the ground; The second column is inserted into the mounting cavity from the open end of the mounting cavity and is movable in the vertical direction. A water-driven structure is disposed within the mounting cavity and located below the second column, connecting to the lower end of the second column. The water-driven structure is used to drive the second column upwards during water injection; and... A locking structure is provided on the first column, which is used to cooperate with the side wall of the mounting cavity to lock the second column in the vertically upward position.

2. The adjustable post-cast strip column as described in claim 1, characterized in that, The water-driven structure includes: A water-driven section, disposed within the mounting cavity and located below the second column, is used to drive the second column upward during water expansion; and... A water supply unit is provided in connection with the water drive unit, and the water supply unit is used to inject water into the water drive unit.

3. The adjustable post-cast strip column as described in claim 2, characterized in that, The water drive unit includes a bellows that extends vertically; or, The water drive unit includes a cylindrical body that extends vertically. A movable plate is movably disposed within the cylindrical body along its vertical direction. The movable plate is tightly abutted against the inner wall of the cylindrical body. The movable plate, the cylindrical body, and the lower end of the first column enclose an inner cavity that communicates with the water supply unit.

4. The adjustable post-cast strip column as described in claim 2, characterized in that, The first column has a through hole on its peripheral side corresponding to the water drive section; The water supply unit is connected to the water drive unit through a connecting pipe passing through the through hole.

5. The adjustable post-cast strip column as described in claim 4, characterized in that, The water drive unit has a water supply port corresponding to the connecting pipe, and a one-way valve is provided at the water supply port.

6. The adjustable post-cast strip column as described in claim 1, characterized in that, The locking structure includes a locking part and a mating part. One of the locking part and the mating part is disposed on the side wall of the mounting cavity, and the other is movably disposed on the second column in the vertical direction. The locking part is used to cooperate with the mating part to lock the second column in the vertical upward position.

7. The adjustable post-cast strip column as described in claim 6, characterized in that, The locking part includes multiple wedges, which are spaced apart and arranged in a ring around the periphery of the second column, and are all capable of moving synchronously up and down. The inner sidewalls of the first column are arranged close to each other from top to bottom to form the mating part.

8. The adjustable post-cast strip column as described in claim 1, characterized in that, The second column includes: The first column is movably inserted into the mounting cavity in a vertical direction; and... The second column is inclined horizontally from bottom to top. The lower end of the second column is connected to the periphery of the first column, and the upper end is connected to the first column through a connecting rod. The second column is used to support the lower mold at the post-cast strip.

9. The adjustable post-cast strip column as described in claim 8, characterized in that, The side wall of the mounting cavity is recessed with a sliding groove, which extends vertically. The first column has a slider protruding from its periphery, and the slider is slidably disposed in the groove along the vertical direction.

10. The adjustable post-cast strip column as described in claim 1, characterized in that, The adjustable post-cast strip column also includes a displacement sensor, which is located on the first column and faces the second column. The displacement sensor is used to measure the movement distance of the second column.

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