A prefabrication construction device and construction method for an embedded distribution box in a masonry wall surface

Abstract

The present application relates to a pre-construction device and a construction method for an embedded distribution box in a masonry wall surface, belonging to the technical field of construction equipment. It includes a frame and a positioning frame. An installation plate and a lifting component are arranged on the frame. The lifting component is used to drive the installation plate to move in the vertical direction. An installation box, an installation rod and a fixing component are arranged on the installation plate. A through groove is horizontally formed on the side surface of the installation box. The installation rod is arranged in the installation box and one end extends out of the installation box through the through groove, and the installation rod moves along the direction of the through groove. The fixing component is used to fix the installation rod in the installation box. The positioning frame is arranged at one end of the installation rod away from the installation box. The present application has the effect of improving the installation accuracy of the distribution box.

Description

Technical Field

[0001] This application relates to the field of construction equipment technology, and particularly relates to a prefabrication construction device and construction method for an embedded distribution box in a masonry wall surface. Background Art

[0002] In modern household life, people have higher and higher requirements for the installation and positioning of distribution boxes in the home. It is necessary to ensure that the distribution box does not lose its original function, and at the same time, it is required that the distribution box does not occupy other spaces as much as possible, so as to make the home decoration more spacious and beautiful.

[0003] Therefore, most household distribution boxes in current building construction are buried in the wall in a concealed installation manner. The specific construction method is to reserve a hole for installing the distribution box on the wall when building the wall, and then install the distribution box in the hole.

[0004] In view of the above related technologies, when reserving holes in the wall, affected by factors such as the change in the setting volume of concrete, temperature, and wall settlement, the size, vertical position, and horizontal position of the reserved holes are extremely likely to shift, affecting the installation accuracy of the distribution box. Summary of the Invention

[0005] In order to improve the installation accuracy of the distribution box, this application provides a prefabrication construction device and construction method for an embedded distribution box in a masonry wall surface.

[0006] On the one hand, this application provides a prefabrication construction device for an embedded distribution box in a masonry wall surface, adopting the following technical solution:

[0007] A prefabrication construction device for an embedded distribution box in a masonry wall surface includes a frame and a positioning frame. An installation plate and a lifting assembly are arranged on the frame. The lifting assembly is used to drive the installation plate to move in the vertical direction. An installation box, an installation rod, and a fixing component are arranged on the installation plate. A through groove is horizontally opened on the side surface of the installation box. The installation rod is arranged in the installation box and one end extends out of the installation box through the through groove, and the installation rod moves along the direction of the through groove. The fixing component is used to fix the installation rod in the installation box. The positioning frame is arranged at the end of the installation rod away from the installation box.

[0008] By adopting the above technical scheme, when constructing the reserved holes of the distribution box, the height of the positioning frame is adjusted by using the lifting assembly to meet the installation requirements of distribution boxes of different heights. The installation rod is movably installed in the installation box, so as to facilitate the adjustment of the position of the positioning frame in the horizontal direction to meet the construction of reserved holes for distribution boxes in multiple directions; the positioning frame is supported and fixed by using a rack to facilitate fixing the positioning frame, which to a certain extent avoids the size and vertical position of the reserved opening from being offset during the casting process, thereby improving the installation accuracy of the distribution box and preventing the distribution box from being squeezed and deformed during the installation process, thereby avoiding damage to the outer shell and internal electrical components of the distribution box.

[0009] Optionally, the lifting assembly includes a lifting cylinder, a cylinder body of the lifting cylinder is connected to the frame, and a piston rod of the lifting cylinder extends vertically upward and is connected to the mounting plate.

[0010] By adopting the above technical solution, the lifting cylinder can easily drive the mounting plate to move in the vertical direction.

[0011] Optionally, the installation box is a cylindrical barrel, and a steel ball is rotatably embedded inside the installation box. The steel ball is provided with a plurality of holes opposite to the through groove, and the holes are along the diameter direction of the steel ball. The installation rod is inserted into the holes, and the fixing assembly is used to fix the steel ball in the installation box.

[0012] By adopting the above technical solution, the installation rod is inserted into the steel ball, and the installation rod is moved, and the steel ball rotates inside the installation box, thereby achieving the effect of facilitating the rotation of the installation rod.

[0013] Optionally, a positioning hole is provided on the steel ball in the vertical direction, a positioning rod is vertically penetrated on the installation box, the positioning rod is penetrated in the positioning hole, a positioning groove is provided at one end of the installation rod located in the installation box, an annular groove is provided on the positioning rod, an annular stopper is provided on the positioning rod and at the top of the annular groove, and the annular stopper is adapted to the positioning groove.

[0014] By adopting the above technical solution, the annular stopper is adapted to the positioning groove, the positioning rod is moved upward, and the mounting rod is moved toward the positioning rod. When the end of the positioning rod is located in the annular groove, the positioning rod is moved downward, and the annular stopper is engaged in the positioning groove to fix the mounting rod in the mounting box. When the mounting rod is removed, the positioning rod is moved upward and the mounting rod is pulled out. This facilitates the removal and fixation of the mounting rod in the mounting box.

[0015] Optionally, a boss is provided on the top of the positioning rod, and a tension spring is sleeved on the positioning rod, one end of the tension spring is connected to the boss, and the other end is connected to the top of the installation box, and the tension spring makes the installation rod always have a tendency to move downward.

[0016] By adopting the above technical solution, the tension spring makes the positioning rod always tend to move downward, and further makes the annular stopper always tend to be clamped and installed in the positioning groove, to a certain extent, preventing the installation rod from detaching from the installation box.

[0017] Optionally, the fixing component includes a friction plate and a driving member. A receiving cavity is formed in the installation box. The friction plate is slidably disposed in the receiving cavity. One side of the friction plate facing the steel ball is in contact with the surface of the steel ball. The driving member is disposed in the installation box and is connected to the friction plate. The driving member is used to drive the friction plate to approach or move away from the steel ball.

[0018] By adopting the above technical solution, the driving member drives the friction plate to move towards the steel ball and closely fit with the steel ball. The steel ball is subjected to a large frictional resistance, achieving the effect of clamping and fixing the steel ball in the installation box.

[0019] Optionally, the driving member includes a spring and a dial. A moving cavity is formed in the installation box and is located on the side of the receiving cavity close to the positioning rod. A retaining piece is provided on the friction plate and is located in the moving cavity. The dial is provided on the positioning rod and is located in the moving cavity. The dial abuts against the retaining piece. A driving cavity is formed in the installation box and is located on the bottom wall of the moving cavity. The spring is located in the driving cavity. The spring makes the friction plate always tend to move towards the steel ball.

[0020] By adopting the above technical solution, the spring makes the friction plate always tend to move towards the steel ball, thereby pressing the friction plate against the surface of the steel ball. When driving the positioning rod to move upward, the installation rod is separated from the positioning rod. The positioning rod drives the friction plate to move away from the steel ball through the dial. At this time, the steel ball can be driven to rotate in the installation box. After the positioning frame rotates to the target position, the positioning rod moves downward and clamps the installation rod. At the same time, the friction plate moves under the action of the spring to abut against the steel ball, thus facilitating the fixing of the installation rod in the current position.

[0021] Optionally, the driving member includes a piston block and a compression block. The piston block is slidably disposed in the driving cavity. A piston cavity is formed in the installation box. An oil passage is formed between the piston cavity and the driving cavity. Hydraulic oil is filled in both the driving cavity and the piston cavity. The compression block is slidably disposed in the piston cavity. A connecting rod is provided on the compression block. The connecting rod passes upward through the installation box and is connected to the boss.

[0022] By adopting the above technical solution, when the positioning rod is driven to move upward, the compression block is driven to move upward along the piston cavity, so that the piston block moves upward along the driving cavity under the action of atmospheric pressure, so that the friction plate and the steel ball will not fit tightly, and the steel ball can rotate freely; when the positioning rod moves downward, the compression block is driven to move downward along the piston cavity, and then the piston block is driven by hydraulic oil to move toward the steel ball, pressing the friction plate against the steel ball, thereby achieving the effect of facilitating the fixing of the position of the mounting rod.

[0023] On the other hand, the present application provides a prefabrication construction method for a concealed distribution box in a masonry wall, comprising the following steps:

[0024] S1: Determine the pre-installation position of the distribution box, place the rack on the ground, and install the positioning frame on the installation rod; S2: Use the lifting assembly to adjust the height of the installation plate; S3: Drive the installation rod to move, adjust the position of the positioning frame, and fix the position of the positioning frame through the fixing assembly; S4: Pour the wall where the positioning frame is located, take out the positioning frame after the concrete solidifies, and install the distribution box into the reserved hole in the wall.

[0025] By adopting the above technical solution, the positioning frame support is fixed in the wall. After the wall is cast, the positioning frame is taken out and the distribution box is installed in the reserved hole. The positioning frame is fixed in position under the support of the rack, so that the position and size of the reserved hole are fixed, which facilitates the installation of the distribution box and improves the installation accuracy of the distribution box.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. When constructing the reserved holes of the distribution box, the height of the positioning frame is adjusted by using the lifting assembly to meet the installation requirements of distribution boxes of different heights. The installation rod is moved and installed in the installation box, so as to facilitate the adjustment of the horizontal position of the positioning frame to meet the construction of the reserved holes of the distribution box in multiple directions; the positioning frame is supported and fixed by the rack to facilitate the fixing of the positioning frame, which to a certain extent avoids the deviation of the size and vertical position of the reserved opening during the casting process, improves the installation accuracy of the distribution box, and at the same time avoids the distribution box from being squeezed and deformed during the installation process, and damages the outer shell and internal electrical components of the distribution box;

[0028] 2. The installation rod is inserted into the steel ball. When the installation rod is moved, the steel ball rotates inside the installation box, which facilitates the rotation of the installation rod;

[0029] 3. The annular stopper is matched with the positioning groove, the positioning rod is moved upward, and the mounting rod is moved toward the positioning rod. When the end of the positioning rod is located in the annular groove, the positioning rod is moved downward, and the annular stopper is clamped in the positioning groove to fix the mounting rod in the installation box; when removing the mounting rod, the positioning rod is moved upward and the mounting rod is pulled out; thereby facilitating the removal and fixation of the mounting rod in the installation box. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0031] Figure 2 It is a cross-sectional view used to show the internal structure of the installation box in Example 1 of the present application.

[0032] Figure 3 It is a cross-sectional view used to illustrate the positioning rod structure in the embodiment of the present application.

[0033] Figure 4 yes Figure 2 Enlarged view of part A in the middle.

[0034] Figure 5 It is a cross-sectional view used to show the internal structure of the installation box in Example 2 of the present application.

[0035] Description of reference numerals:

[0036] 1. Frame; 11. Lifting cylinder; 12. Accommodating chamber; 13. Moving chamber; 14. Driving chamber; 15. Piston chamber; 2. Positioning frame; 21. L-shaped rod body; 3. Mounting plate; 31. Mounting box; 311. Through groove; 32. Mounting rod; 321. Positioning groove; 322. Boss; 323. Tension spring; 4. Steel ball; 41. Socket; 42. Positioning hole; 5. Positioning rod; 51. Annular groove; 52. Annular stopper; 53. Anti-slip block; 61. Friction plate; 611. Stopper; 62. Spring; 63. Pick; 64. Piston block; 65. Compression block; 651. Connecting rod. DETAILED DESCRIPTION

[0037] The following is combined with Figures 1-5 This application is described in further detail.

[0038] Embodiment 1:

[0039] The present application embodiment discloses a prefabricated construction device for a concealed distribution box in a masonry wall, referring to Figure 1A prefabricated construction device for a concealed distribution box on a masonry wall includes a frame 1 and a positioning frame 2. The bottom of the frame 1 is disc-shaped and placed horizontally on the ground. A mounting plate 3 and a lifting assembly are installed on the frame 1. The mounting plate 3 is a rectangular plate and the mounting plate 3 is horizontally fixed on the top of the frame 1. The lifting assembly is installed on the frame 1 and connected to the mounting plate 3. The lifting assembly is used to drive the mounting plate 3 to move in the vertical direction. An installation box 31, a mounting rod 32 and a fixing assembly are installed on the upper surface of the mounting plate 3. A through groove 311 is opened on the side of the mounting box 31 in the horizontal direction. One end of the mounting rod 32 is located in the mounting box 31, and the other end extends to the outside of the mounting box 31 through the through groove 311, and the mounting rod 32 can move in the direction of the through groove 311. The fixing assembly is used to fix the mounting rod 32 in the mounting box 31, and the rotating assembly is connected to the mounting rod 32 and is used to drive the mounting rod 32 to rotate. An L-shaped rod body 21 is installed and fixedly connected to one end of the installation rod 32 away from the installation box 31 by bolts, and the positioning frame 2 is installed at the end of the L-shaped rod body 21 .

[0040] Reference Figure 1 and Figure 2 The lifting assembly includes a lifting cylinder 11, the cylinder body of the lifting cylinder 11 is fixedly connected to the frame 1, the piston rod of the lifting cylinder 11 extends vertically upward, and the mounting plate 3 is fixedly mounted on the top of the piston rod of the lifting cylinder 11. The mounting box 31 is a cylindrical barrel, and a steel ball 4 is embedded inside the mounting box 31. The steel ball 4 can rotate freely inside the mounting box 31. Two through grooves 311 are relatively opened in the circumferential direction of the mounting box 31, and the through grooves 311 are opposite to the large circle of the steel ball 4 in the horizontal direction. A plurality of jacks 41 are opened on the steel ball 4, and the plurality of jacks 41 are located on the same plane, and the plurality of steel balls 4 are opposite to the through grooves 311. The mounting rod 32 is inserted into one of the jacks 41. The fixing assembly is installed in the mounting box 31 and is used to fix the steel ball 4 in the mounting box 31.

[0041] The mounting rod 32 is inserted into the steel ball 4, and the mounting rod 32 is moved along the through slot 311. At this time, the steel ball 4 rotates in the mounting box 31, which is convenient for driving the mounting rod 32 to rotate. This facilitates the adjustment of the horizontal position of the positioning frame 2, and meets the construction requirements of the reserved holes of the multi-directional distribution box.

[0042] Reference Figure 2 and Figure 3, a positioning hole 42 is vertically formed in the steel ball 4, and the positioning hole 42 coincides with the diameter of the steel ball 4 in the vertical direction. A positioning rod 5 is vertically inserted through the installation box 31. The positioning rod 5 is a cylindrical rod body, and the positioning rod 5 is inserted into the positioning hole 42. A positioning groove 321 is formed at one end of the installation rod 32 located inside the installation box 31. An annular groove 51 is formed in the positioning rod 5 opposite to the installation rod 32. An annular block 52 is installed on the top wall of the positioning rod 5 and located in the annular groove 51. The annular block 52 is adapted to the positioning groove 321. A boss 322 is installed on the top of the positioning rod 5. A tension spring 323 is sleeved on one end of the positioning rod 5 located outside the installation box 31. One end of the tension spring 323 is connected to the boss 322, and the other end is connected to the upper surface of the installation box 31. The tension spring 323 makes the positioning rod 5 always tend to move downward. An anti-detachment block 53 is arranged at the bottom end of the positioning rod 5, and an anti-detachment groove is formed in the installation box 31 opposite to the anti-detachment block 53.

[0043] When the installation rod 32 is inserted into the steel ball 4, the positioning rod 5 is driven to move upward. One end of the installation rod 32 is inserted into the annular groove 51. The positioning rod 5 is released. Under the action of the tension spring 323, the positioning rod 5 moves downward, and the annular block 52 on the positioning rod 5 moves to be clamped on the installation rod 32. When the installation rod 32 is taken out of the installation box 31, the positioning rod 5 is driven to move upward, and the installation rod 32 is pulled out outward.

[0044] Refer to Figure 2 and Figure 4 , the fixing assembly includes a friction plate 61 and a driving member. A receiving cavity 12 is formed in the installation box 31. The friction plate 61 is slidably installed in the receiving cavity 12. One side of the friction plate 61 facing the steel ball 4 is made of a material with a relatively large coefficient of friction, such as asbestos fiber friction material and asbestos thread friction material. One side of the friction plate 61 facing the steel ball 4 is attached to the surface of the steel ball 4. The driving member is installed in the installation box 31 and connected to the friction plate 61. The driving member is used to drive the friction plate 61 to approach or move away from the steel ball 4. When the driving member drives the friction plate 61 to press tightly against the steel ball 4, the steel ball 4 is subjected to a large frictional resistance and cannot continue to rotate, achieving the effect of fixing the steel ball 4.

[0045] Refer to Figure 2 and Figure 4, the driving member includes a spring 62 and a dial 63. A moving cavity 13 is formed in the installation box 31 and on the side of the accommodation cavity 12 close to the positioning rod 5. The moving cavity 13 communicates the accommodation cavity 12 with the positioning rod 5. A retaining piece 611 is fixedly connected to the friction plate 61, and the retaining piece 611 is located in the moving cavity 13. The dial 63 is fixedly connected to the positioning rod 5 and is located in the moving cavity 13. The top of the dial 63 abuts against the lower surface of the retaining piece 611. A driving cavity 14 is formed in the installation box 31 and on the bottom wall of the moving cavity 13. The spring 62 is located in the driving cavity 14. One end of the spring 62 is connected to the bottom wall of the driving cavity 14, and the other end is connected to the friction plate 61. The spring 62 makes the friction plate 61 always tend to move towards the steel ball 4.

[0046] Drive the positioning rod 5 to move upward in the vertical direction. The dial 63 drives the retaining piece 611 to move upward, thereby driving the friction plate 61 to move away from the steel ball 4 along the receiving groove. A gap is generated between the friction plate 61 and the steel ball 4. At this time, the steel ball 4 is not subject to the frictional resistance of the friction plate 61, so that the steel ball 4 can rotate freely in the installation box 31. When the steel ball 4 is fixed in the installation box 31, release the positioning rod 5. The positioning rod 5 moves downward under the action of the tension spring 323. At this time, the dial 63 moves downward, and the friction plate 61 moves towards the steel ball 4 under the action of the spring 62 and fits tightly with the steel ball 4, fixing the steel ball 4 in the installation box 31.

[0047] The implementation principle of the pre-construction device for the embedded distribution box on the masonry wall surface in the embodiment of the present application is as follows: When constructing the reserved hole for the distribution box, use the lifting cylinder 11 to adjust the height of the positioning frame 2 to meet the installation requirements of distribution boxes with different heights; drive the positioning rod 5 to move upward, insert the installation rod 32 into the steel ball 4 and rotate the installation rod 32. After rotation, release the positioning rod 5, and the installation rod 32 is fixed in the current position, which is convenient for adjusting the position of the positioning frame 2 in the horizontal direction to meet the construction of reserved holes for distribution boxes in multiple directions; after the wall pouring construction is completed, take out the positioning frame 2 and install the distribution box, which can avoid the deviation of the size and vertical position of the reserved opening during the pouring process to a certain extent, and improve the installation accuracy of the distribution box.

[0048] Embodiment 2:

[0049] Refer to Figure 5, the friction plates 61 are arranged on both sides of the positioning rod 5. The driving member includes a piston block 64 and a compression block 65. The piston block 64 is slidably installed in the driving cavity 14. The sliding block is connected to the friction plate 61. A piston cavity 15 is formed in the mounting box 31 and below the boss 322. An oil passage is formed in the frame 1 between the piston cavity 15 and the driving cavity 14. Hydraulic oil is filled in the driving cavity 14, the piston cavity 15 and the oil passage. The compression block 65 is slidably installed in the piston cavity 15. A connecting rod 651 is vertically installed on the upper surface of the compression block 65. The connecting rod 651 extends vertically upward and passes through the mounting box 31. After passing through the mounting box 31, the connecting rod 651 is connected to the boss 322.

[0050] When adjusting the position of the mounting rod 32, the driving positioning rod 5 moves upward. At this time, the positioning rod 5 drives the compression block 65 to move upward, and the piston block 64 moves upward along the driving cavity 14, thereby driving the friction plate 61 to disengage from the steel ball 4, and the steel ball 4 can rotate; after the mounting rod 32 moves to the target position, release the positioning rod 5. The positioning rod 5 moves vertically downward under the action of the tension spring 323 and locks the mounting rod 32. The positioning rod 5 drives the compression block 65 to move downward through the connecting rod 651, and then drives the piston block 64 to move toward the steel ball 4 through the hydraulic oil, thereby pressing the friction plate 61 tightly against the steel ball 4 to fix the steel ball 4.

[0051] This application also discloses a pre-construction method for an embedded distribution box in a masonry wall, including the following steps:

[0052] S1: Determine the pre-installation position of the distribution box, place the frame 1 on the ground at the installation position, install the positioning rod 5 into the mounting box 31, and install the positioning frame 2 on the mounting rod 32;

[0053] S2: Start the lifting cylinder 11 and adjust the height of the positioning frame 2 to the designed installation position of the distribution box;

[0054] S3: Drive the positioning rod 5 to move upward, toggle the mounting rod 32, adjust the position of the positioning frame 2. After the positioning frame 2 moves to the designed position, lower the positioning rod 5 and fix the mounting rod 32 at the current position;

[0055] S4: Pour the wall where the positioning frame 2 is located. After the concrete sets, remove the positioning frame 2 and install the distribution box into the reserved hole in the wall.

[0056] Finally, it should be noted that: in the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "up", "down", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0057] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A prefabrication construction device for an embedded distribution box on a masonry wall surface, characterized in that: It includes a frame (1) and a positioning frame (2). An installation plate (3) and a lifting assembly are provided on the frame (1). The lifting assembly is used to drive the installation plate (3) to move in the vertical direction. An installation box (31), an installation rod (32) and a fixing assembly are provided on the installation plate (3). A through groove (311) is horizontally opened on the side surface of the installation box (31). The installation rod (32) is arranged in the installation box (31) and one end extends outside the installation box (31) through the through groove (311), and the installation rod (32) moves along the direction of the through groove (311). The fixing assembly is used to fix the installation rod (32) in the installation box (31). The positioning frame (2) is arranged at one end of the installation rod (32) far from the installation box (31). The lifting assembly includes a lifting cylinder (11). The cylinder body of the lifting cylinder (11) is connected to the frame (1), and the piston rod of the lifting cylinder (11) extends vertically upward and is connected to the installation plate (3). The installation box (31) is a cylindrical barrel. A steel ball (4) is rotatably embedded in the installation box (31). A plurality of jacks (41) are opened on the steel ball (4) opposite to the through groove (311). The jacks (41) are along the diameter direction of the steel ball (4). The installation rod (32) is inserted into the jacks (41). The fixing assembly is used to fix the steel ball (4) in the installation box (31).

2. The prefabrication construction device for the embedded distribution box in the masonry wall surface according to claim 1, wherein: A positioning hole (42) is vertically opened on the steel ball (4). A positioning rod (5) is vertically penetrated through the installation box (31). The positioning rod (5) is inserted into the positioning hole (42). A positioning groove (321) is opened at one end of the installation rod (32) located inside the installation box (31). An annular groove (51) is opened on the positioning rod (5). An annular stop block (52) is arranged on the positioning rod (5) and at the top of the annular groove (51). The annular stop block (52) is adapted to the positioning groove (321).

3. The prefabrication construction device for an embedded distribution box on a masonry wall surface according to claim 2, characterized in that: A boss (322) is arranged at the top of the positioning rod (5). A tension spring (323) is sleeved on the positioning rod (5). One end of the tension spring (323) is connected to the boss (322), and the other end is connected to the top of the installation box (31). The tension spring (323) makes the installation rod (32) always have a tendency to move downward.

4. The prefabrication construction device for the concealed embedded distribution box on the masonry wall surface according to claim 3, characterized in that: The fixing assembly includes a friction plate (61) and a driving member. A receiving cavity (12) is opened in the installation box (31). The friction plate (61) is slidably arranged in the receiving cavity (12). The side of the friction plate (61) facing the steel ball (4) is in contact with the surface of the steel ball (4). The driving member is arranged in the installation box (31) and is connected to the friction plate (61). The driving member is used to drive the friction plate (61) to approach or move away from the steel ball (4).

5. The prefabrication construction device for the embedded distribution box in the masonry wall according to claim 4, characterized in that: The driving member includes a spring (62) and a paddle (63). A moving chamber (13) is formed in the mounting box (31) and on the side of the accommodating chamber (12) close to the positioning rod (5). A retaining piece (611) is provided on the friction plate (61). The retaining piece (611) is located in the moving chamber (13). The paddle (63) is arranged on the positioning rod (5) and located in the moving chamber (13). The paddle (63) abuts against the retaining piece (611). A driving chamber (14) is formed in the mounting box (31) and on the bottom wall of the moving chamber (13). The spring (62) is located in the driving chamber (14). The spring (62) makes the friction plate (61) always tend to move towards the steel ball (4).

6. The prefabrication construction device for an embedded distribution box in a masonry wall surface according to claim 5, wherein: The driving member includes a piston block (64) and a compression block (65). The piston block (64) is slidably arranged in the driving chamber (14). A piston chamber (15) is formed in the mounting box (31). An oil passage is formed between the piston chamber (15) and the driving chamber (14). Hydraulic oil is filled in both the driving chamber (14) and the piston chamber (15). The compression block (65) is slidably arranged in the piston chamber (15). A connecting rod (651) is provided on the compression block (65). The connecting rod (651) passes through the mounting box (31) upwards and is connected to the boss (322).

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