Prefabricated shear wall construction auxiliary device

Abstract

The utility model provides a prefabricated shear wall construction auxiliary device which comprises two guide rails arranged in parallel, an adjusting mechanism connected between the two guide rails and capable of adjusting the distance between the two guide rails, and a plurality of protective sleeves movably connected to the guide rails and adjustable in length. The positioning pieces are movably connected to the guide rail, the length of each positioning piece can be adjusted, the cavities are formed in the bottom ends of the positioning pieces, openings of the cavities face downwards, the top ends of the leveling steel bars are fixed into the cavities through fixing pieces, the adjusting pieces penetrate through the top ends of the sleeves in a threaded mode, and the horizontal bubble instrument is arranged on the adjusting mechanism. The top ends of the pre-buried leveling steel bars are located on the same horizontal plane, an accurate horizontal reference is provided for installation of the prefabricated shear wall, the installation accuracy of the prefabricated shear wall is improved, the levelness and stability of the prefabricated shear wall after installation are ensured, the construction accuracy and efficiency of the prefabricated shear wall are improved, and the construction cost is reduced. And the stability and the safety of the whole building structure are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of precast shear wall construction, and particularly relates to a construction auxiliary device for precast shear walls. Background Technique

[0002] An assembled concrete building refers to a concrete structure building designed and constructed by means of on-site assembly mainly with precast concrete components produced in factories. Compared with traditional cast-in-place concrete buildings, the construction of assembled concrete buildings can shorten the construction period, have good product quality, be safe and environmentally friendly, be conducive to winter construction, can reduce labor costs, and is conducive to promoting the development and application of green building materials.

[0003] Precast shear walls are key load-bearing and seismic components in assembled buildings. At present, the vertical connection between the bottom precast shear wall and the foundation, as well as the vertical connection between precast shear walls, mainly adopts the sleeve grouting connection method: when the bottom precast shear wall is vertically connected to the foundation, it is necessary to first do the positioning and setting-out work, insert the reserved steel bars in the foundation into the connecting sleeves at the bottom of the precast shear wall, and perform horizontal leveling and vertical alignment of the precast shear wall. After adjusting the position and fixing it, seal the warehouse and grout; when the vertical connection between precast shear walls is carried out, it is necessary to first hoist the precast composite floor slab to the upper end of the precast shear wall, bind the steel bars of the cast-in-place layer of the composite floor slab and the steel bars at the horizontal post-cast strip, and pour the concrete of the cast-in-place layer of the composite floor slab and the concrete at the horizontal post-cast strip. After the concrete meets the strength, hoist the upper precast shear wall, insert the connecting steel bars protruding from the top of the bottom precast shear wall into the connecting sleeves at the lower part of the upper precast shear wall, perform horizontal leveling and vertical alignment, and after adjusting the position and fixing it, seal the warehouse and grout to connect the precast components into a whole.

[0004] At present, the horizontal leveling of precast shear walls is achieved by pre-placing gaskets on the supporting members (such as the foundation or floor slab). The placed gaskets can adjust the height of the precast shear wall, so that the wall panels are on the same elevation plane, ensuring that the levelness of the precast shear wall after installation meets the design requirements. However, in the actual construction process, since it is very difficult to ensure the flatness of the upper surface of the supporting member concrete, it is often necessary to adjust the thickness and quantity of the gaskets according to the actual situation many times to ensure that the elevation of the precast shear wall meets the design requirements, which increases the complexity and workload of the on-site construction of the shear wall and greatly reduces the construction efficiency and construction accuracy; during the process of pouring concrete, the reserved steel bars are easily contaminated or damaged, which will affect the quality of subsequent processes. Summary of the Invention

[0005] The purpose of the utility model is to provide a construction auxiliary device for precast shear walls to solve the problems raised in the above background technique.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A prefabricated shear wall construction auxiliary device comprises two parallel guide rails, an adjustment mechanism connected between the two guide rails and capable of adjusting the spacing between the two guide rails, a plurality of protective sleeves movably connected to the guide rails and capable of adjusting their lengths, a plurality of positioning members movably connected to the guide rails and capable of adjusting their lengths, a cavity disposed at the bottom end of the positioning member and opening downward, a leveling steel bar whose top end is fixed in the cavity by a fixing member, an adjustment member threadedly penetrating the top end of the sleeve, and a bubble level disposed on the adjustment mechanism, wherein the top end of the leveling steel bar abuts against the top end of the cavity.

[0008] Preferably, the protective sleeve comprises: a protective outer cylinder which is hollow inside and open at the bottom, and a protective inner cylinder which is threadedly connected to the protective outer cylinder and is hollow inside and open at both ends; the positioning member comprises: a positioning cylinder which is hollow inside and open at the bottom, and a positioning rod which is threadedly connected to the positioning cylinder, and the cavity is arranged at the bottom end of the positioning rod.

[0009] Preferably, observation grooves are provided on the outer side walls of the protective outer tube and the positioning tube, and scale lines are provided on the outer walls of the protective outer tube and the positioning tube.

[0010] Preferably, the adjusting member comprises: an adjusting rod threadedly penetrating the top end of the protective outer cylinder, and an adjusting handle connected to the top end of the adjusting rod.

[0011] Preferably, the length of the cavity is 20 mm, and the fixing member comprises: a bolt with an end thread penetrating through the side wall of the positioning rod and extending into the cavity, and a rubber pad arranged at the end of the bolt.

[0012] Preferably, the guide rail is provided with a guide groove along its length direction, the positioning member and the protective sleeve are movably connected to the guide rail through a mounting member, and the connecting rod comprises: a mounting plate, a threaded rod with a top end connected to the bottom surface of the mounting plate, and a locking nut threadedly sleeved on the threaded rod, the width of the threaded rod is smaller than the width of the guide groove, and the mounting plate is connected to the upper ends of the protective sleeve and the positioning member.

[0013] Preferably, the adjustment mechanism includes: a plurality of connecting members connected between the two guide rails, and an adjustment member connected between the two guide rails, and the mounting member includes: a first support rod respectively connected to the two guide rails, and a telescopic rod connected between the two support rods.

[0014] Preferably, the adjusting member includes: an adjusting outer cylinder with a hollow interior and an open end; an adjusting inner cylinder slidably disposed within the adjusting outer cylinder, also having a hollow interior and an open end; an adjusting rod having one end threadedly connected to the adjusting inner cylinder and the other end rotatably passing through the side wall of the adjusting outer cylinder; an adjusting handle provided at the end of the adjusting rod; and second support rods respectively connected to the adjusting outer cylinder and the end of the adjusting outer cylinder and connected to the guide rail. The open end of the adjusting inner cylinder is located within the adjusting outer cylinder.

[0015] Compared with the prior art, the advantages of the present utility model are as follows:

[0016] 1. In the present utility model, by sleeving the protective sleeve on the reserved steel bars, observing whether the entire device is in a horizontal state through the level bubble, and driving the entire device to perform fine adjustment through the rotational movement of the adjusting member, the device can be adjusted to a horizontal state, thereby ensuring that the tops of the leveling steel bars are located on the same horizontal plane. After embedding, the leveling steel bars not only bear the weight of the precast shear wall but also provide an accurate horizontal reference for the installation of the precast shear wall, thereby improving the installation accuracy of the precast shear wall, ensuring the levelness and stability of the precast shear wall after installation, enhancing the stability and safety of the overall building structure, significantly improving the construction accuracy and efficiency of the precast shear wall, reducing the construction difficulty and cost, reducing the cumbersome steps of repeatedly adjusting gaskets and measuring the levelness in the traditional construction of precast shear walls, and at the same time reducing the requirements for the skill level of construction workers and reducing the errors and rework caused by human factors.

[0017] 2. The present utility model is provided with a protective sleeve with adjustable length, which is sleeved on the reserved steel bars of the shear wall or the bottom cast-in-place structural layer. It not only ensures the accurate position of the reserved steel bars during the construction process, prevents the deviation of the steel bars caused by construction operations or external forces, and guarantees the safety and stability of the structure, but also provides a physical barrier for the reserved steel bars, preventing the direct contact of materials such as cement slurry during the concrete pouring process, reducing the risk of steel bar contamination and corrosion; the length of the protective sleeve can be adjusted according to the height of the reserved steel bars after the concrete is poured, so that the lower opening of the protective sleeve is the elevation of the completed surface of the concrete pouring, enabling construction workers to clearly master the pouring height, thereby effectively controlling the pouring volume of the concrete, ensuring the height of the structural layer, and improving the construction accuracy and efficiency.

[0018] 3. The present utility model can adjust the distance between two parallel guide rails, as well as the number and position of the protective sleeves, according to the spacing and quantity of the connecting steel bars of different precast shear walls, so that the device can be applicable to precast shear walls of different specifications, thereby improving the flexibility and practicality of the device. The device can be repeatedly used in different construction projects, which helps to reduce the construction cost, save materials, and improve the economic benefits. Description of the Drawings

[0019] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of an auxiliary device for precast shear wall construction;

[0021] Figure 2 It is a schematic structural diagram of a protective sleeve of an auxiliary device for precast shear wall construction;

[0022] Figure 3 It is a sectional view of a protective sleeve of an auxiliary device for precast shear wall construction;

[0023] Figure 4 It is a schematic structural diagram of a positioning member of an auxiliary device for precast shear wall construction;

[0024] Figure 5 It is a sectional schematic view of a positioning member of an auxiliary device for precast shear wall construction;

[0025] Figure 6 It is a sectional view of an adjusting member of an auxiliary device for precast shear wall construction;

[0026] Reference numerals: 1 - guide rail, 2 - adjustment mechanism, 3 - protective sleeve, 4 - positioning member, 5 - leveling steel bar, 6 - adjusting member, 7 - horizontal bubble level, 8 - protective outer cylinder, 9 - protective inner cylinder, 10 - positioning cylinder, 11 - positioning rod, 12 - observation slot, 13 - scale line, 14 - adjusting rod, 15 - adjusting handle, 16 - fixing member, 17 - bolt, 18 - guide groove, 19 - threaded rod, 20 - locking nut, 21 - first support rod, 22 - telescopic rod, 23 - adjusting outer cylinder, 24 - adjusting inner cylinder, 25 - adjusting rod, 26 - adjusting handle, 27 - second support rod, 28 - mounting plate, 29 - cavity. Specific embodiments

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0028] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0030] In addition, if terms such as "first", "second", "third", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0031] In addition, if terms such as "horizontal", "vertical", "hanging" do not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, if terms such as "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] It should be noted that, without conflict, the features in the embodiments of the present utility model can be combined with each other.

[0034] Such as Figures 1-5As shown in the figure, a construction auxiliary device for precast shear walls includes two parallel guide rails 1, an adjustment mechanism 2 connected between the two guide rails 1 and capable of adjusting the distance between the two guide rails 1, a plurality of protective sleeves 3 movably connected to the guide rails 1 and with adjustable lengths, a plurality of positioning members 4 movably connected to the guide rails 1 and with adjustable lengths, a cavity 29 with a downward opening provided at the bottom end of the positioning member 4, a leveling steel bar 5 with its top end fixed in the cavity 29 through a fixing member 16, an adjusting member 6 threadedly penetrating through the top end of the sleeve, and a horizontal bubble level 7 provided on the adjustment mechanism 2. The top end of the leveling steel bar 5 abuts against the top end of the cavity 29.

[0035] It should be noted that: the inner diameter of the protective sleeve 3 should be larger than the reserved steel bars of the precast shear wall. When manufacturing the leveling steel bar 5, a toothless saw must be used for cutting, and a cutting machine shall not be used for truncating. The cross-section must be ensured to be flat without a horseshoe shape. The manufacturing length of the leveling steel bar 5 should be the thickness of the cast-in-place slab + the height of the grouting material (generally 20 mm); among them, the length of the cavity 29 is 20 mm;

[0036] In practice, before pouring concrete, first, according to the design drawings and the actual situation on site, adjust the distance between the guide rails 1 through the adjusting mechanism 2, as well as adjust the quantity and positions of the protective sleeves 3 of the guide rails 1 and the mounting parts. Then, insert the leveling steel bars 5 into the cavities 29 so that the tops of the leveling steel bars 5 are in contact with the tops of the cavities 29. Then, fix the leveling steel bars 5 in the cavities 29 through the fixing parts 16. Adjust the length of the protective sleeve 3 so that its length is the height of the reserved steel bars after pouring the concrete. Adjust the length of the mounting part according to the designed height of the grouting material. If the height of the grouting material is equal to the length of the cavity 29, the length of the mounting part is the same as the length of the protective sleeve 3. If the height of the grouting material is greater than the length of the cavity 29, the length of the mounting part should be less than the length of the protective sleeve 3, and the difference between the mounting part and the protective sleeve 3 is the difference between the height of the grouting material and the length of the cavity 29. After the lengths of the protective sleeve 3 and the mounting part are adjusted, install the device on the embedded steel bars, ensuring that the top of the embedded steel bars is in contact with the bottom end of the adjusting part 6 in the protective sleeve 3. Observe whether the whole device is in a horizontal state through the level bubble 7. If it is found that the device is not horizontal, control the length of its extension in the protective sleeve 3 by rotating the adjusting part 6, thereby driving the whole device to perform fine adjustment until it reaches the horizontal state, so as to ensure that the tops of the leveling steel bars 5 can be located on the same horizontal plane. After confirming that the device is horizontally correct, carry out the concrete pouring work. When the concrete is poured to the lower opening of the protective sleeve 3, the pouring can be stopped. After the concrete reaches the fixed strength, the leveling steel bars 5 are successfully embedded in the concrete. At this time, the device can be taken out from the embedded steel bars and prepared for the installation of the precast shear wall. When the precast shear wall is installed, its bottom is in contact with the tops of the leveling steel bars 5. Since the leveling steel bars 5 are already on the same horizontal plane, the precast shear wall can also automatically reach the horizontal state after installation. The leveling steel bars 5 not only bear the weight of the precast shear wall, but also ensure the leveling effect of the precast shear wall through their precise horizontal positions, thereby improving the installation accuracy of the precast shear wall, ensuring the horizontality and stability of the precast shear wall after installation, improving the stability and safety of the overall building structure, significantly improving the construction accuracy and efficiency of the precast shear wall, reducing the construction difficulty and cost, reducing the cumbersome steps of repeatedly adjusting gaskets and measuring the level in traditional construction, and at the same time reducing the requirements for the skill level of construction workers and reducing the errors and rework caused by human factors.

[0037] As Figure 2 and Figure 3 shown, the protective sleeve 3 includes: a protective outer cylinder 8 with a hollow interior and an open bottom end, and a protective inner cylinder 9 with a hollow interior and two open ends, which is threadedly connected inside the protective outer cylinder 8;

[0038] Among them, the adjusting part 6 includes: an adjusting rod 14 that threadedly penetrates the top end of the protective outer cylinder 8, and an adjusting handle 15 connected to the top end of the adjusting rod 14.

[0039] It should be noted that: in order to facilitate the rotation of the protective inner cylinder 9 and prevent the construction workers from slipping, an anti-slip rubber sleeve can be sleeved on the bottom end of the protective inner cylinder 9 to improve the convenience of device operation; the length of the adjusting rod 14 can be selected according to the actual situation. The adjusting rod 14 can be set with a structure that is larger at the top and smaller at the bottom in diameter. The lower end of the adjusting rod 14 is threadedly connected to the protective inner cylinder 9 and extends into the protective inner cylinder 9, and the upper end penetrates through the protective inner cylinder 9 and is connected to the adjusting handle 15. The structure that is larger at the top and smaller at the bottom can prevent the adjusting rod 14 from rotating out of the protective inner cylinder 9. Before the device is installed, the adjusting rods 14 should all be in the same initial position.

[0040] When it is necessary to adjust the length of the protective sleeve 3, just rotate the protective inner cylinder 9, and the protective inner cylinder 9 can be rotated out of or into the protective outer cylinder 8. When it is necessary to adjust the levelness of the device, just rotate the adjusting handle 15, and the extension distance of the adjusting rod 14 in the protective inner cylinder 9 can be adjusted. The structure is simple and the operation is convenient; the protective sleeve 3 is sleeved on the reserved steel bars of the shear wall or the bottom cast-in-place structural layer, which can not only ensure the accuracy of the position of the reserved steel bars during the construction process, prevent the steel bars from being displaced due to construction operations or external forces, and ensure the safety and stability of the structure, but also provide a physical barrier for the reserved steel bars, prevent the direct contact of materials such as cement slurry during the concrete pouring process, and reduce the risk of steel bar pollution and corrosion; by adjusting the length of the protective sleeve 3, the lower opening of the protective sleeve 3 is set as the elevation of the completion surface of the concrete pouring, so that the construction workers can clearly master the pouring height, thereby effectively controlling the pouring volume of the concrete, ensuring the height of the structural layer, and improving the construction accuracy and construction efficiency.

[0041] As Figure 4 and Figure 5 shown, the positioning member 4 includes: a positioning cylinder 10 with a hollow interior and an open bottom end, and a positioning rod 11 threadedly connected inside the positioning cylinder 10. The cavity 29 is provided at the bottom end of the positioning rod 11.

[0042] Among them, the fixing member 16 includes: a bolt 17 whose end thread penetrates through the side wall of the positioning rod 11 and extends into the cavity 29, and a rubber pad provided at the end of the bolt 17.

[0043] Insert the leveling steel bar 5 into the cavity 29 so that the top end of the leveling steel bar 5 abuts against the top end of the cavity 29, and then rotate the bolt 17 so that the leveling steel bar 5 is clamped between the end of the bolt 17 and the inner wall of the cavity 29, thereby fixing the leveling steel bar 5 in the cavity 29. The rubber pad is flexible, which can not only increase the contact area between the end of the bolt 17 and the leveling steel bar 5, but also increase the friction between the end of the bolt 17 and the leveling steel bar 5, thereby improving the stability of the fixing member 16 and further improving the stability of the device.

[0044] In order to facilitate the precise adjustment of the lengths of the protective sleeve 3 and the positioning member 4 and quickly know the lengths of the protective sleeve 3 and the positioning member 4, observation slots 12 are provided on the outer side walls of the protective outer cylinder 8 and the positioning cylinder 10, and scale lines 13 are provided on the outer walls of the protective outer cylinder 8 and the positioning cylinder 10. Construction workers can see the positions of the protective inner cylinder 9 and the positioning rod 11 through the observation slots 12, and then read the scale lines 13 corresponding to the tops of the protective inner cylinder 9 and the positioning rod 11 to know the current lengths of the protective sleeve 3 and the positioning member 4.

[0045] As Figures 1-5 shown, a guide groove 18 is provided through the guide rail 1 along its length direction. Both the positioning member 4 and the protective sleeve 3 are movably connected to the guide rail 1 through mounting members. The mounting member includes: a mounting plate 28, a threaded rod 19 with its top end connected to the bottom surface of the mounting plate 28, and a locking nut 20 threadedly sleeved on the threaded rod 19. The distance between the threaded rods 19 is less than the width of the guide groove 18. The mounting plate 28 is connected to the upper ends of the protective sleeve 3 and the positioning member 4.

[0046] It should be noted that: a rubber gasket can also be provided at the upper end of the locking nut 20. Contacting the guide rail 1 through the gasket can improve the stability of the positioning member 4 on the guide rail 1;

[0047] When it is necessary to adjust the positions on the two guide rails 1, only need to rotate the locking nut 20 on the threaded rod 19 to disengage it from the guide rail 1, and then move the protective sleeve 3 so that the threaded rod 19 moves in the guide groove 18. After moving to the designated position, tighten the locking nut 20 so that it abuts against the bottom wall of the guide rail 1, and then the installation and fixation of the protective sleeve 3 can be completed; if it is necessary to increase or decrease the number of protective sleeves 3, rotate the locking nut 20 on the threaded rod 19 to disengage it from the threaded rod 19, then insert or disengage the threaded rod 19 from the guide groove 18, and then tighten the locking nut 20 to the threaded rod 19. The structure is simple, the operation is convenient, the practicability is strong, and the flexibility is high.

[0048] As Figure 6 shown, the adjustment mechanism 2 includes: a plurality of connecting members connected between the two guide rails 1, and an adjusting member connected between the two guide rails 1. The connecting member includes: a first support rod 21 respectively connected to the two guide rails 1, and a telescopic rod 22 connected between the two support rods.

[0049] The adjusting member includes: an adjusting outer cylinder 23 with a hollow interior and an open end; an adjusting inner cylinder 24 slidably disposed within the adjusting outer cylinder 23, also having a hollow interior and an open end; an adjusting rod 25 having one end threadedly connected to the adjusting inner cylinder 24 and the other end rotatably passing through the side wall of the adjusting outer cylinder 23; an adjusting handle 26 provided at the end of the adjusting rod 25; and second support rods 27 respectively connected to both ends of the adjusting outer cylinder 23 and connected to the guide rail 1. The open end of the adjusting inner cylinder 24 is located within the adjusting outer cylinder 23.

[0050] The adjusting mechanism 2 can adjust the distance between the two guide rails 1. The specific working principle is as follows: By rotating the adjusting handle 26, the adjusting rod 25 is driven to rotate, which in turn causes the adjusting inner cylinder that is threadedly connected to the adjusting rod 25 and slidably connected within the adjusting outer cylinder to move within the adjusting outer cylinder, thereby changing the extended length of the adjusting outer cylinder 23. Then, through the second support rod 27, one guide rail 1 is driven to move relative to the other guide rail 1, ultimately achieving precise adjustment of the distance between the two guide rails 1.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described by referring to the preferred embodiments of the present invention, those of ordinary skill in the art should understand that various changes can be made in form and details without departing from the spirit and scope of the present invention defined by the appended claims.

Claims

1. A prefabricated shear wall construction auxiliary device, characterized in that: The invention comprises two parallel guide rails (1), an adjustment mechanism (2) connected between the two guide rails (1) and capable of adjusting the distance between the two guide rails (1), a plurality of protective sleeves (3) movably connected to the guide rails (1) and capable of adjusting the length, a plurality of positioning members (4) movably connected to the guide rails (1) and capable of adjusting the length, a cavity (29) arranged at the bottom end of the positioning member (4) and opening downward, a leveling steel bar (5) whose top end is fixed in the cavity (29) by a fixing member (16), an adjustment member (6) threadedly penetrating the top end of the protective sleeve (3), and a level bubble gauge (7) arranged on the adjustment mechanism (2), wherein the top end of the leveling steel bar (5) abuts against the top end of the cavity (29).

2. A prefabricated shear wall construction auxiliary device according to claim 1, characterized in that: The protective sleeve (3) comprises: a protective outer cylinder (8) which is hollow inside and open at the bottom, and a protective inner cylinder (9) which is threadedly connected inside the protective outer cylinder (8) and is hollow inside and open at both ends. The positioning member (4) comprises: a positioning cylinder (10) which is hollow inside and open at the bottom, and a positioning rod (11) which is threadedly connected inside the positioning cylinder (10). The cavity (29) is arranged at the bottom end of the positioning rod (11).

3. A prefabricated shear wall construction auxiliary device according to claim 2, characterized in that: An observation groove (12) is provided on the outer side walls of the protective outer tube (8) and the positioning tube (10), and scale lines (13) are provided on the outer sides of the protective outer tube (8) and the positioning tube (10).

4. The prefabricated shear wall construction auxiliary device according to claim 2, characterized in that: The adjusting member (6) comprises: an adjusting rod (14) threadedly penetrating the top end of the protective outer tube (8), and an adjusting handle (15) connected to the top end of the adjusting rod (14).

5. The prefabricated shear wall construction auxiliary device according to claim 2, characterized in that: The length of the cavity (29) is 20 mm. The fixing member (16) comprises: a bolt (17) whose end thread penetrates through the side wall of the positioning rod (11) and extends into the cavity (29), and a rubber pad arranged at the end of the bolt (17).

6. The prefabricated shear wall construction auxiliary device according to claim 1, characterized in that: The guide rail (1) is provided with a guide groove (18) running through it along its length direction. The positioning member (4) and the protective sleeve (3) are both movably connected to the guide rail (1) through a mounting member. The mounting member comprises: a mounting plate (28), a threaded rod (19) whose top end is connected to the bottom surface of the mounting plate (28), and a locking nut (20) threadedly sleeved on the threaded rod (19). The width of the threaded rod (19) is smaller than the width of the guide groove (18). The mounting plate (28) is connected to the upper ends of the protective sleeve (3) and the positioning member (4).

7. The prefabricated shear wall construction auxiliary device according to claim 1, characterized in that: The adjustment mechanism (2) comprises: a plurality of connecting members connected between the two guide rails (1), and an adjustment member connected between the two guide rails (1); the connecting member comprises: a first support rod (21) respectively connected to the two guide rails (1), and a telescopic rod (22) connected between the two support rods.

8. The prefabricated shear wall construction auxiliary device according to claim 7, characterized in that: The adjusting member comprises: an adjusting outer cylinder (23) which is hollow inside and has an opening at one end, an adjusting inner cylinder (24) which is slidably arranged inside the adjusting outer cylinder (23) and is hollow inside and has an opening at one end, an adjusting rod (25) which has one end threadedly connected to the adjusting inner cylinder (24) and the other end rotatably penetrates the side wall of the adjusting outer cylinder (23), an adjusting handle (26) arranged at the end of the adjusting rod (25), and a second supporting rod (27) which is respectively connected to the two end portions of the adjusting outer cylinder (23) and connected to the guide rail (1), and the opening of the adjusting inner cylinder (24) is located inside the adjusting outer cylinder (23).

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