Supporting device for underground rectifying tower well dado construction

Abstract

The invention discloses an underground rectifying tower well dado construction supporting device, and relates to the technical field of supporting, the underground rectifying tower well dado construction supporting device comprises an annular top beam fixedly arranged at a well mouth and a dado mechanism fixedly arranged at the bottom end of the annular top beam, the dado mechanism comprises a plurality of dado units which are sequentially connected from top to bottom, the retaining wall unit comprises a plurality of connecting plates and supporting plates which are connected at intervals, connecting mechanisms are arranged on the supporting plates and used for longitudinally connecting the supporting plates which are adjacent up and down, fixing mechanisms are arranged on the connecting plates and used for transversely connecting the supporting plates which are adjacent left and right, and the connecting plates which are adjacent up and down are fixedly connected. The supporting plates adjacent up and down are longitudinally connected through the connecting mechanisms, the supporting plates adjacent left and right are transversely connected through the fixing mechanisms, the connecting mode is simple, and the connecting efficiency is greatly improved on the premise that the stability is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of support, and in particular to a support device for underground distillation tower shaft wall protection construction. Background Art

[0002] In the process of separating stable isotopes by cryogenic distillation, the low temperature, small separation coefficient, high theoretical plate number, vacuum distillation, high insulation requirements, and slender production equipment have brought great difficulties to engineering practice. In the prior art, the production equipment built by the US National Laboratory is as high as 200m; the low-temperature distillation pilot plant with methane as the medium built by Tokyo Gas Company of Japan consists of 4 groups of towers with a height of 30m. In addition, there are also test devices in the United Kingdom, Romania and other countries. In view of the complexity of the test device and the consideration of production operation, it has become a popular setting method to set the distillation tower underground, which is called the distillation tower well.

[0003] Since the wall of the distillation tower shaft is upright, in order to prevent the side wall soil layer from collapsing, the foundation pit often needs to use a support structure to support and enclose the side wall of the foundation pit during construction. In the prior art, the support structure includes an annular crown beam fixedly arranged at the wellhead, and a plurality of connecting plates bolted to each other are fixedly arranged at the bottom of the annular crown beam; a support plate is arranged between each two adjacent connecting plates, and the plurality of support plates and the connecting plates together form a support tube for isolating the side wall of the foundation pit. The lateral connection between the connecting plate and the supporting plate, as well as the longitudinal connection between the upper and lower adjacent supporting plates, are mostly welded, but the positioning is inconvenient during the connection process, and the welding process is slow, resulting in low connection efficiency. Summary of the invention

[0004] In view of this, the present invention provides an underground distillation tower shaft wall construction support device to solve the problems raised in the above-mentioned background technology.

[0005] A device for supporting the construction of underground distillation tower shaft wall protection, comprising an annular crown beam fixedly arranged at a wellhead and a wall protection mechanism fixedly arranged at the bottom end of the annular crown beam, the wall protection mechanism comprising a plurality of wall protection units connected in sequence from top to bottom, the wall protection units comprising a plurality of spaced connecting plates and support plates, the support plates being provided with connecting mechanisms for longitudinally connecting the upper and lower adjacent support plates, the connecting plates being provided with fixing mechanisms for transversely connecting the left and right adjacent support plates, and the upper and lower adjacent connecting plates being fixedly connected.

[0006] Furthermore, the connecting mechanism includes a connecting column, a connecting groove and a connecting assembly, the connecting column is fixedly arranged at the top end of the support plate, the connecting groove is arranged at the bottom end of the support plate, the connecting groove is adapted to the connecting column, and a connecting assembly is arranged around the connecting groove for fixing the connecting column which is fully extended into the connecting groove.

[0007] Furthermore, the connecting assembly includes an outer connecting ring and an inner connecting ring, the inner connecting ring is fixedly arranged at the middle part of the inner side of the outer connecting ring, and the bottom end of the support plate near the connecting groove is sequentially provided with a slide groove 1 and a slide groove 2 which are interconnected from the inside to the outside, the slide groove 1 is used to provide a moving space for the outer connecting ring to slide vertically, and the slide groove 2 is used to provide a moving space for the inner connecting ring to slide vertically, and a guide column 1 is fixedly connected to the top wall of the slide groove 2, the inner connecting ring is slidably sleeved on the guide column 1, and a spring 1 is sleeved on the guide column 1, and one end of the spring 1 is fixedly connected On the top wall of the second slide groove, the other end is fixedly connected to the top of the connecting inner ring, a driving groove is provided at the top of the side wall of the connecting groove, a limiting unit is provided in the driving groove, which is used to limit the sliding of the connecting inner ring, an avoidance groove is provided at the bottom of the connecting inner ring, a clamping hole is provided at the end position of the side wall of the connecting groove away from the driving groove, a receiving groove is provided at the end position of the connecting column close to the support plate, a ball is slidably arranged in the clamping hole, the clamping hole is used to limit the ball to only move half of the ball body into the receiving groove or into the first slide groove, and the avoidance groove is used to avoid the ball.

[0008] Further, the limiting unit includes a driving member and a limiting block, a guide column 2 is fixedly provided between the top wall and the bottom wall of the driving groove, one side of the driving member is slidably sleeved on the guide column 2, and the other side extends into the connecting groove, a spring 2 is sleeved on the guide column 2, one end of the spring 2 is fixedly connected to the top wall of the driving groove, and the other end is fixedly connected to the top of the driving member, a driving block is provided on the front and rear sides of the driving member, a through groove matched with the driving member is provided on the side of the limiting block close to the driving member, and guide grooves are provided on the front and rear side walls of the through groove, the driving block is slidably connected in the guide groove, a limiting hole matched with the limiting block is provided on the side of the driving groove close to the second slide groove, the limiting hole connects the guide groove and the second slide groove, a limiting groove matched with the limiting block is provided at the end position of the connecting inner ring close to the first spring, the limiting block is slidably connected in the limiting hole, and when the driving block moves vertically upward, the limiting block is driven to move away from the limiting groove.

[0009] Furthermore, the fixing mechanism includes a rotating shaft 1, two rotating shafts 2 and two abutment units. Abutment grooves are provided on both sides of the support plate near the top of the slide groove 2, and grooves are provided on the connecting plate near the abutment grooves. One end of the rotating shaft is rotatably set in the groove, and the other end is provided with a rotating handle. One end of the rotating shaft 2 is rotatably set in the grooves on both sides of the rotating shaft 1, and the other end is provided with a gear 2. Gear 1 is fixed on the rotating shaft 1, and the gear 1 is meshed with the gear 2. One end of the abutment unit is rotatably sleeved on the rotating shaft 2, and the other end is provided with an abutment joint matched with the abutment groove.

[0010] The cam is secured to the bottom of the drive shaft and is adapted to engage with the drive gear of the control wheel, the latter being secured to the bottom of the drive shaft with respect to the control wheel.

[0011] The beneficial effects of the present invention are:

[0012] The present invention uses a connecting mechanism to longitudinally connect the upper and lower adjacent support plates, and uses a fixing mechanism to transversely connect the left and right adjacent support plates. The connection method is simple and greatly improves the connection efficiency under the premise of ensuring stability. The connecting groove and the connecting column in the present invention are adapted to facilitate the rapid positioning of the upper and lower adjacent support plates. After the connecting column is fully inserted into the connecting groove, the driving member is driven to move vertically upward, so that the limit block moves away from the limit groove, and the limit of the limit block on the connecting inner ring is released, so that the connecting inner ring and the connecting outer ring slide vertically downward under the action of the spring. The setting of the avoidance groove can ensure that when the connecting column moves vertically upward along the connecting groove, the ball moves to the sliding block under the extrusion of the connecting column. The connecting rod is pressed into the groove one by the connecting inner ring, and the ball moves into the accommodating groove under the squeezing action of the connecting inner ring, thereby limiting the connection column from moving downward and completing the connection between the connecting column and the connecting groove; turning the rotating handle can drive the abutment head to rotate into the abutment groove, thereby completing the lateral connection between the connecting plate and the adjacent support plate, and the abutment process can generate thrust on the support plate, making it closer to the well wall and improving the support effect; after the abutment head rotates to the abutment groove, turn the telescopic handle to make the telescopic plate slide from the fixed groove into the slide groove one, and the inner abutment head is placed in the space between the connecting outer ring and the top wall of the slide groove one, thereby limiting the vertical upward movement of the connecting outer ring and ensuring the connection stability between the connecting groove and the connecting column. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0014] Figure 1 It is a stereoscopic diagram of a supporting device for underground distillation tower shaft wall construction according to the present invention.

[0015] Figure 2 It is a schematic diagram of the structure of the support plate in the present invention.

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0017] Figure 4 It is a schematic diagram of the structure of the limiting unit in the present invention.

[0018] Figure 5 It is a schematic diagram of the structure of the driving block in the present invention.

[0019] Figure 6 It is a schematic diagram of the structure of the limit block in the present invention.

[0020] Figure 7 It is a structural schematic diagram of the connection plate in the present invention.

[0021] Figure 8 It is a structural schematic diagram of the fixing mechanism in the present invention.

[0022] Fig. 9 It is a structural schematic diagram of the abutment unit in the present invention.

[0023] Fig.10 Schematic diagram of the state of step S1 when adjacent supporting plates are connected in an embodiment of the present invention.

[0024] Fig.11 Schematic diagram of the state of step S2 when adjacent supporting plates are connected in an embodiment of the present invention.

[0025] Fig.12 Schematic diagram of the state of step S3 when adjacent supporting plates are connected in an embodiment of the present invention.

[0026] Fig.13 Schematic diagram of the state of step S4 when adjacent supporting plates are connected in an embodiment of the present invention.

[0027] Fig.14 Schematic diagram of the state of step S5 when adjacent supporting plates are connected in an embodiment of the present invention.

[0028] Among them, in the figure:

[0029] 1. Annular crown beam; 2. Connecting plate; 21. Groove; 3. Support plate; 31. Connecting column; 311. Accommodating groove; 32. Abutting groove; 33. Fixing groove; 34. Slide groove 1; 35. Slide groove 2; 36. Connecting groove; 361. Clamping hole; 362. Driving groove; 3621. Limiting hole; 4. Connecting assembly; 41. Connecting outer ring; 42. Connecting inner ring; 421. Limiting groove; 422. Avoiding groove; 43. Guide column 1; 44. Spring 1; 45. Ball; 46. Driving member; 46 1. Driving block; 47. Limiting block; 471. Through slot; 472. Guide slot; 48. Guide column 2; 49. Spring 2; 5. Fixing mechanism; 51. Rotating handle; 52. Rotating shaft 1; 53. Abutment unit; 531. Abutment plate; 532. Rotating seat; 533. External abutment joint; 534. Driving teeth; 535. Driving gear; 536. Driving shaft; 537. Telescopic handle; 538. Internal abutment joint; 54. Rotating shaft 2; 55. Gear 2; 56. Gear 1; 6. Angle iron. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are described clearly and completely below. 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.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0033] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0034] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] See attached Figure 1-14 The present invention discloses an underground distillation tower well wall protection construction support device, including an annular crown beam 1 fixedly arranged at the wellhead and a wall protection mechanism fixedly arranged at the bottom end of the annular crown beam 1. In this embodiment, the annular crown beam 1 is cast at the wellhead, and the wall protection mechanism includes a plurality of wall protection units connected in sequence from top to bottom. The wall protection unit includes a plurality of connecting plates 2 and supporting plates 3 connected at intervals. A connecting mechanism is provided on the supporting plate 3 for longitudinally connecting the upper and lower adjacent supporting plates 3. A fixing mechanism 5 is provided on the connecting plate 2 for transversely connecting the left and right adjacent supporting plates 3. The upper and lower adjacent connecting plates 2 are fixedly connected.

[0036] In this embodiment, the upper and lower adjacent connecting plates 2 are fixedly connected by angle irons 6 .

[0037] The connecting mechanism includes a connecting column 31, a connecting groove 36 and a connecting component 4. The connecting column 31 is fixedly arranged at the top end of the support plate 3, and the connecting groove 36 is arranged at the bottom end of the support plate 3. The connecting groove 36 is adapted to the connecting column 31. The connecting component 4 is arranged around the connecting groove 36 for fixing the connecting column 31 which is fully extended into the connecting groove 36.

[0038] In this embodiment, the topmost connecting plate is not provided with a connecting column 31 , and the topmost connecting plate and the supporting plate are both welded to the bottom end of the annular crown beam 1 .

[0039] The connecting assembly 4 includes an outer connecting ring 41 and an inner connecting ring 42, the inner connecting ring 42 is fixedly arranged at the middle of the inner side of the outer connecting ring 41, and the bottom end of the support plate 3 is close to the connecting groove 36. The mutually connected slide groove 1 34 and the slide groove 2 35 are sequentially arranged from the inside to the outside, and the slide groove 1 34 is used to provide a moving space for the connecting outer ring 41 to slide vertically, and the slide groove 2 35 is used to provide a moving space for the connecting inner ring 42 to slide vertically. The top wall of the slide groove 2 35 is fixedly connected with a guide column 1 43, and the connecting inner ring 42 is slidably sleeved on the guide column 1 43. The guide column 1 43 is sleeved with a spring 1 44, and one end of the spring 1 44 is fixedly connected to the top of the slide groove 2 35 The top of the side wall of the connecting groove 36 is provided with a driving groove 362, and a limiting unit is provided in the driving groove 362 for limiting the sliding of the connecting inner ring 42. The bottom of the connecting inner ring 42 is provided with an avoidance groove 422. The end position of the side wall of the connecting groove 36 away from the driving groove 362 is provided with a clamping hole 361, and the end position of the connecting column 31 close to the supporting plate 3 is provided with a receiving groove 311. A ball 45 is slidably arranged in the clamping hole 361. The clamping hole 361 is used to limit the ball 45 to only move half of the ball body into the receiving groove 311 or into the slide groove 34, and the avoidance groove 422 is used to avoid the ball 45.

[0040] The setting of the avoidance groove 422 in this embodiment can ensure that when the connecting column 31 moves vertically upward along the connecting groove 36 , the ball 45 moves into the sliding groove 1 34 under the squeezing action of the connecting column 31 .

[0041] The limiting unit includes a driving member 46 and a limiting block 47. A guide column 48 is fixedly arranged between the top wall and the bottom wall of the driving groove 362. One side of the driving member 46 is slidably sleeved on the guide column 48, and the other side extends into the connecting groove 36. A spring 49 is sleeved on the guide column 48. One end of the spring 49 is fixedly connected to the top wall of the driving groove 362, and the other end is fixedly connected to the top of the driving member 46. The driving member 46 is provided with a driving block 461 on the front and rear sides. The limiting block 47 is provided with a through groove 471 adapted to the driving member 46 on the side close to the driving member 46. The through groove Guide grooves 472 are provided on the front and rear side walls of 471, and the driving block 461 is slidably connected in the guide groove 472. A limiting hole 3621 adapted to the limiting block 47 is provided on the side of the driving groove 362 close to the second slide groove 35. The limiting hole 3621 connects the guide groove 472 and the second slide groove 35. A limiting groove 421 adapted to the limiting block 47 is provided at the end position of the connecting inner ring 42 close to the spring one 44. The limiting block 47 is slidably connected in the limiting hole 3621. When the driving block 461 moves vertically upward, the driving limiting block 47 moves away from the limiting groove 421.

[0042] In this embodiment, after the connecting column 31 is fully extended into the connecting groove 36, it abuts against the extending side of the driving member 46, driving the driving member 46 to move vertically upward, so that the limit block 47 moves away from the limit groove 421, releasing the limit block 47 on the connecting inner ring 42, and under the action of spring 1, the connecting inner ring 42 and the connecting outer ring 41 slide vertically downward, and the ball 45 moves into the accommodating groove 311 under the squeezing action of the connecting inner ring 42, thereby limiting the connecting column 31 from moving downward, completing the connection between the connecting column 31 and the connecting groove 36.

[0043] The fixing mechanism 5 includes a rotating shaft 1 52, two rotating shafts 2 54 and two abutting units 53. The abutting grooves 32 are provided at the positions near the top of the sliding grooves 2 35 on both sides of the supporting plate 3. The connecting plate 2 is provided with grooves 21 at the positions near the abutting grooves 32. One end of the rotating shaft 1 52 is rotatably arranged in the grooves 21, and the other end is provided with a rotating handle 51. One end of the rotating shaft 2 54 is rotatably arranged in the grooves 21 on both sides of the rotating shaft 1 52, and the other end is provided with a gear 2 55. The rotating shaft 1 52 is fixedly provided with a gear 1 56, and the gear 1 56 is meshedly connected with the gear 2 55. One end of the abutting unit 53 is rotatably sleeved on the rotating shaft 2 54, and the other end is provided with an abutting head adapted to the abutting grooves 32. In this embodiment, the abutting head is made of a flexible material, such as rubber or silicone.

[0044] In this embodiment, by rotating the rotating handle 51, the abutment head can be driven to rotate into the abutment groove 32, completing the lateral connection between the connecting plate 2 and the adjacent support plate 3, and the abutment process can generate thrust on the support plate 3, making it closer to the well wall, thereby improving the support effect.

[0045] The abutment unit 53 includes an abutment plate 531, a rotating seat 532 and a driving shaft 536. The inner side of the rotating seat 532 is fixedly sleeved on the rotating shaft 2 54, and the outer side is fixedly connected to the abutment plate 531. The abutment plate 531 is provided with a telescopic groove at one end away from the rotating seat 532. A telescopic plate is slidably connected in the telescopic groove. A driving tooth 534 is provided on the side wall of the inner cavity of the telescopic plate. A driving gear 535 is rotatably provided in the inner cavity of the telescopic plate. The driving gear 535 is meshed with the driving tooth 534. The driving shaft 536 is One end is fixedly connected to the center of the driving gear 535, and the other end passes through the telescopic plate to extend outward and is fixedly connected to the telescopic handle 537. The abutment joint includes an outer abutment joint 533 and an inner abutment joint 538. The outer abutment joint 533 is fixedly arranged at the end of the abutment plate 531 away from the rotating seat 532, and the inner abutment joint 538 is fixedly arranged at the end of the telescopic plate away from the rotating seat 532. Fixed grooves 33 compatible with the inner abutment joint 538 are provided on both sides of the support plate 3, and the fixed grooves 33 connect the abutment groove 32 and the slide groove 34.

[0046] In this embodiment, after the abutment head is rotated to the abutment groove 32, the telescopic handle 537 is rotated to make the telescopic plate slide from the fixed groove 33 into the slide groove 34, and the inner abutment head 538 is placed in the space between the connecting outer ring 41 and the top wall of the slide groove 34, thereby limiting the vertical upward movement of the connecting outer ring 41, thereby improving the connection stability between the connecting groove 36 and the connecting column 31.

[0047] Working principle of the present invention:

[0048] S1: Cast an annular crown beam 1 at the wellhead, weld the first-layer connecting plate 2 and the supporting plate 3 to the bottom end of the annular crown beam 1, connect the second-layer connecting plate 2 to the first-layer connecting plate 2 through angle irons, move the second-layer supporting plate 3 to the bottom of the first-layer supporting plate 3, and insert the connecting column 31 of the lower supporting plate 3 into the connecting groove of the upper supporting plate 3. At this time, the connecting inner ring 42 is limited by the limiting block 47. Due to the setting of the avoidance groove 422, the ball 45 moves smoothly to the slide groove 1 34 under the extrusion of the connecting column 31;

[0049] S2: After the connecting column 31 is fully inserted into the connecting groove 36, it abuts against the extending side of the driving member 46, driving the driving member 46 to move vertically upward, so that the limit block 47 moves away from the limit groove 421, releasing the limit of the limit block 47 on the connecting inner ring 42, and under the action of the spring 1, the connecting inner ring 42 and the connecting outer ring 41 slide vertically downward;

[0050] S3: When the connecting column 31 is fully extended into the connecting groove 36, the accommodating groove 311 is aligned with the clamping hole 361, and the ball 45 moves into the accommodating groove 311 under the extrusion of the connecting inner ring 42, thereby restricting the connecting column 31 from moving downward, and completing the connection between the connecting column 31 and the connecting groove 36;

[0051] S4: Turn the rotating handle 51 to drive the abutment head to rotate into the abutment grooves 32 of the support plates 3 on the left and right sides, completing the lateral connection between the connecting plate 2 and the adjacent support plates 3. The abutment process can generate thrust on the support plates 3, making them closer to the well wall, thereby improving the support effect.

[0052] S5: After the abutment joint is rotated to the abutment groove 32, rotate the telescopic handle 537 to make the telescopic plate slide from the fixed groove 33 into the slide groove 34, and the inner abutment joint 538 is placed in the space between the connecting outer ring 41 and the top wall of the slide groove 34, thereby limiting the vertical upward movement of the connecting outer ring 41, improving the connection stability between the connecting groove 36 and the connecting column 31, and also improving the lateral stability of the connecting plate 2 and the adjacent supporting plate 3.

[0053] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A support device for underground distillation tower shaft wall construction, characterized in that: The invention comprises an annular crown beam (1) and a wall protection mechanism fixedly arranged at the bottom end of the annular crown beam (1), wherein the wall protection mechanism comprises a plurality of wall protection units connected in sequence from top to bottom, wherein the wall protection units comprise a plurality of connecting plates (2) and supporting plates (3) connected at intervals, wherein the supporting plates (3) are provided with a connecting mechanism for longitudinally connecting the supporting plates (3) adjacent to each other vertically, and wherein the connecting plates (2) are provided with a fixing mechanism (5) for transversely connecting the supporting plates (3) adjacent to each other horizontally, and wherein the connecting plates (2) adjacent to each other vertically are fixedly connected.

2. The underground distillation tower well wall protection construction support device according to claim 1, characterized in that: The connection mechanism comprises a connection column (31), a connection groove (36) and a connection assembly (4); the connection column (31) is fixedly arranged at the top end of the support plate (3); the connection groove (36) is arranged at the bottom end of the support plate (3); the connection groove (36) is adapted to the connection column (31); and a connection assembly (4) is arranged around the connection groove (36) for fixing the connection column (31) which is fully inserted into the connection groove (36).

3. The underground distillation tower shaft wall protection construction support device according to claim 2, characterized in that: The connecting assembly (4) comprises a connecting outer ring (41) and a connecting inner ring (42), wherein the connecting inner ring (42) is fixedly arranged at the middle part of the inner side of the connecting outer ring (41), and a slide groove (34) and a slide groove (35) are arranged in sequence from the inside to the outside at the position near the connecting groove (36) at the bottom end of the supporting plate (3), and are interconnected. The slide groove (34) is used to provide a moving space for the connecting outer ring (41) to slide vertically, and the slide groove (35) is used to provide a moving space for the connecting inner ring (42) to slide vertically, and the top wall of the slide groove (35) is fixedly connected with a guide column (43), and the connecting inner ring (42) is slidably sleeved on the guide column (43), and a spring (44) is sleeved on the guide column (43), and one end of the spring (44) is fixedly connected to the top wall of the slide groove (35). The other end is fixedly connected to the top of the connecting inner ring (42), the top of the side wall of the connecting groove (36) is provided with a driving groove (362), a limiting unit is provided in the driving groove (362) for limiting the sliding of the connecting inner ring (42), the bottom of the connecting inner ring (42) is provided with an avoidance groove (422), the end position of the side wall of the connecting groove (36) away from the driving groove (362) is provided with a clamping hole (361), the end position of the connecting column (31) close to the supporting plate (3) is provided with a receiving groove (311), a ball (45) is slidably arranged in the clamping hole (361), the clamping hole (361) is used to limit the ball (45) to only move half of the ball body into the receiving groove (311) or into the sliding groove (34), and the avoidance groove (422) is used to avoid the ball (45).

4. The underground distillation tower well wall protection construction support device according to claim 3, characterized in that: The limiting unit comprises a driving member (46) and a limiting block (47). A second guide post (48) is fixedly provided between the top wall and the bottom wall of the driving groove (362). One side of the driving member (46) is slidably sleeved on the second guide post (48), and the other side extends into the connecting groove (36). A second spring (49) is sleeved on the second guide post (48). One end of the second spring (49) is fixedly connected to the top wall of the driving groove (362), and the other end is fixedly connected to the top of the driving member (46). The driving member (46) is provided with a driving block (461) on the front and rear sides. The limiting block (47) is provided with a through groove (471) matched with the driving member (46) on the side close to the driving member (46). The through groove (471) ) are provided with guide grooves (472) on the front and rear side walls, the driving block (461) is slidably connected in the guide groove (472), the driving groove (362) is provided with a limiting hole (3621) matched with the limiting block (47) on the side close to the second slide groove (35), the limiting hole (3621) connects the guide groove (472) and the second slide groove (35), the connecting inner ring (42) is provided with a limiting groove (421) matched with the limiting block (47) at the end position close to the spring one (44), the limiting block (47) is slidably connected in the limiting hole (3621), and when the driving block (461) moves vertically upward, it drives the limiting block (47) to move away from the limiting groove (421).

5. The underground distillation tower shaft wall protection construction support device according to claim 4, characterized in that: The fixing mechanism (5) comprises a rotating shaft 1 (52), two rotating shafts 2 (54) and two abutting units (53); abutting grooves (32) are provided at positions near the top of the second slide groove (35) on both sides of the supporting plate (3); a groove (21) is provided at a position near the abutting groove (32) on the connecting plate (2); one end of the rotating shaft 1 (52) is rotatably arranged in the groove (21), and the other end is provided with a rotating handle (51); one end of the rotating shaft 2 (54) is rotatably arranged in the grooves (21) on both sides of the rotating shaft 1 (52), and the other end is provided with a gear 2 (55); a gear 1 (56) is fixedly provided on the rotating shaft 1 (52), and the gear 1 (56) is meshedly connected with the gear 2 (55); one end of the abutting unit (53) is rotatably sleeved on the rotating shaft 2 (54), and the other end is provided with an abutting joint matched with the abutting groove (32).

6. The underground distillation tower shaft wall protection construction support device according to claim 5, characterized in that: The abutment unit (53) comprises an abutment plate (531), a rotating seat (532) and a driving shaft (536); the inner side of the rotating seat (532) is fixedly sleeved on the second rotating shaft (54), and the outer side is fixedly connected to the abutment plate (531); a telescopic groove is provided at one end of the abutment plate (531) away from the rotating seat (532); a telescopic plate is slidably connected in the telescopic groove; a driving tooth (534) is provided on the side wall of the inner cavity of the telescopic plate; a driving gear (535) is rotatably provided in the inner cavity of the telescopic plate; the driving gear (535) is meshed with the driving tooth (534); one end of the driving shaft (536) is fixedly connected to the rotating shaft (536); The support plate (3) is connected to the center of the driving gear (535), and the other end passes through the telescopic plate to extend outward and is fixedly connected to a telescopic handle (537). The abutment joint includes an outer abutment joint (533) and an inner abutment joint (538). The outer abutment joint (533) is fixedly arranged at one end of the abutment plate (531) away from the rotating seat (532), and the inner abutment joint (538) is fixedly arranged at one end of the telescopic plate away from the rotating seat (532). Fixed grooves (33) adapted to the inner abutment joint (538) are provided on both sides of the support plate (3), and the fixed grooves (33) are connected to the abutment groove (32) and the slide groove (34).

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