CN114165159B - Pre-buried positioning device for building engineering - Google Patents

Description

A pre-embedded positioning device for construction engineering

technical field

The invention belongs to the technical field of construction engineering, and in particular relates to a pre-embedded positioning device for construction engineering.

Background technique

Embedded parts are pre-installed (buried) components in the concealed project, which are components placed during the pouring of the structure, and are used for lap joints when building the superstructure to facilitate the installation and fixation of the external engineering equipment foundation. Embedded parts Most of them are made of metal, such as steel bars or cast iron, and non-metallic rigid materials such as wood and plastics can also be used.

However, when the embedded parts are installed and buried, they need to be positioned and punched on the ground. Now most of the hole measurements are manually used with a measuring ruler, and then the white ash is sprinkled on the ground to complete the positioning. This will easily lead to inaccurate positioning and measurement errors. Larger, affecting the construction progress in the later stage, so a pre-embedded positioning device for construction projects is needed.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the existing defects and provide a pre-embedded positioning device used in construction projects to solve the problem that most of the punching measurements proposed in the above background technology are manually using the measuring ruler, and then using The positioning can be completed by sprinkling white ash on the ground, which will easily lead to inaccurate positioning and large measurement errors, which will affect the later construction progress.

In order to achieve the above object, the present invention provides the following technical solutions: a pre-embedded positioning device for construction engineering, including a mobile protective cover, fixed blocks and motor covers are arranged on both sides of the mobile protective cover, the fixed block and The bottom end of the motor cover is symmetrically fixedly connected with a fixed side plate, and the opposite inner side of the fixed side plate is rotatably connected with a moving wheel, and one end of the moving wheel is fixedly connected with a driven pulley, and the driven pulley passes through the transmission belt. It is connected with the drive pulley in transmission, one end of the drive pulley is provided with a first motor, the drive end of the drive pulley is fixedly connected to the first motor, the drive pulley is connected to one side of the fixed block in rotation, and the first motor Fixedly connected to one side of the fixed block, the inside of the moving shield is provided with a positioning and moving device, and one side of the moving shield is provided with a positioning adjustment device.

Preferably, the positioning moving device includes a first screw, a positioning bracket and a second motor, the driving end of the second motor is fixedly connected to the first screw, and the outer side of the first screw is threadedly connected to the positioning bracket.

Preferably, the first screw rod is rotatably connected to one side of the fixed block, the positioning bracket is slidably connected to both sides of the moving protective cover, and sliding rails are fixedly connected to both sides of the moving protective cover.

Preferably, the positioning adjustment device includes a second screw, a rotating ring and a movement adjusting rod, the outer side of the second screw is screwed with a rotating ring, and one end of the rotating ring is rotatably connected with a moving adjusting rod.

Preferably, one end of the second screw is fixedly connected with a second bracket, and the other end of the second screw is fixedly connected with a limit connection block, and the second bracket and the limit connection block are fixedly connected by moving an adjustment rod , One side of the second bracket is provided with an installation hole, and the second bracket is fixedly connected to one side of the first bracket by bolts.

Preferably, both sides of the positioning bracket are fixedly connected with a first bracket, one side of the first bracket is provided with a mounting hole, the inner bottom end of the first bracket is provided with a cylinder, and the bottom end of the cylinder is provided with There is a telescopic rod, the bottom end of the telescopic rod is fixedly connected with a drilling rig, the bottom end of the drilling rig is provided with a drill bit, the two sides of the drilling rig are fixedly connected with lugs, and the inside of the lugs is slidably connected with a sliding rod, The sliding rods are all fixedly connected to the bottom end of the first bracket.

Preferably, the bottom end of the moving adjustment rod is fixedly connected with a motor, the driving end of the motor is fixedly connected with a rotating screw, the outer thread of the rotating screw is connected with a lifting frame, and the bottom end of the lifting frame is fixedly connected with a The positioning plug is hollow inside, and the lifting frame is slidably connected to the outside of the moving adjustment rod.

Preferably, slide rail frames are provided under both sides of the mobile protective cover, and the moving wheels are provided at the top of the slide rail frame.

Preferably, the slide rail frames are fixedly connected by reinforcing brackets, and several reinforcing brackets are provided.

Preferably, universal wheels are provided at the bottom end of the slide rail frame, and several universal wheels are provided.

Compared with the prior art, the present invention provides a pre-embedded positioning device for construction engineering, which has the following beneficial effects:

1. In the present invention, through the fixed block and the motor cover arranged on both sides of the mobile protective cover, the bottom ends of the fixed block and the motor cover are symmetrically fixed and connected with fixed side plates, and the relative rotation of the fixed side plates is connected with moving wheels. , one end of the moving wheel arranged below the fixed block is fixedly connected with a driven pulley, the driven pulley is connected to the driving pulley through the transmission belt, and the driving pulley is fixedly connected to the driving end of the first motor, so that the first motor is started, and the first motor The driving end will drive the driving pulley to rotate, so that the mobile protective cover moves on the top of the slide rail frame, so that the position of the mobile protective cover can be adjusted, which is convenient for positioning and use;

2. The present invention uses the positioning and moving device provided inside the mobile protective cover. When the mobile protective cover moves to the designated position, it can start the horizontal positioning and punching work, start the second motor inside the motor cover, and the second motor drives the driving end. The fixedly connected first screw starts to rotate, and the first screw drives the positioning bracket connected by the outer thread to start to move. The positioning bracket is slidably connected to both sides of the mobile protective cover, and both sides of the mobile protective cover are fixedly connected with sliding rails, which is convenient for stable positioning. For the movement of the bracket, a drill bit is set under the mobile protective cover, so that the position of the drill bit can be adjusted horizontally, and then the positioning and drilling can be performed;

3. In the present invention, a cylinder is arranged at the inner bottom end of the first bracket through the first bracket fixedly connected on both sides of the positioning bracket, and a telescopic rod is arranged at the bottom end of the cylinder, and a drilling rig is fixedly connected at the bottom end of the telescopic rod. Start the cylinder to drive the telescopic rod, the telescopic rod will make the drilling machine lift, and then the drilling machine will start to drive the drill bit to rotate, and start drilling while facing the ground, and the telescopic rod will send the drill bit underground until the depth of the hole meets the positioning requirements. Both sides of the drilling rig are provided with supporting lugs, which are slidably connected to the sliding rod. The sliding rod can stabilize the lifting of the drilling rig, prevent rotation during the drilling process, and achieve the effect of positioning and drilling;

4. The present invention is provided with a positioning adjusting device on one side of the second bracket through the second bracket arranged on one side of the first bracket. , rotate the rotating ring, the rotating ring is threadedly connected to the outside of the second screw rod, the second screw rod is fixedly connected between the second bracket and the limit connection block, the second bracket and the limit connection block are fixedly connected by a stable angle bracket, or To increase the stability of the second screw rod, one end of the rotating ring is rotated and connected with a moving adjustment rod, so that the moving adjusting rod and the rotating ring will start to move toward one end of the second screw rod to adjust the distance between the next hole and the first row of holes. distance, so that the effect of positioning can be achieved, and the use of thread adjustment can make the measurement result more accurate;

5. In the present invention, the motor is fixedly connected to the bottom end of the moving adjustment rod. The driving end of the motor is fixedly connected with a rotating screw, and the outer thread of the rotating screw is connected with a lifting frame, and the bottom end of the lifting frame is fixedly connected with a positioning plug. The inside of the plug is hollow, and the lifting frame is slidably connected to the outside of the moving adjustment rod. The starting motor drives the rotating screw to start rotating, and the rotating screw can make the lifting frame rise and fall, so that the positioning plug can be inserted into the positioning hole, which is convenient for positioning. , to prevent the deviation of the next positioning punching, which improves the accuracy of positioning punching and improves the positioning efficiency.

The parts not involved in the device are the same as the prior art or can be realized by adopting the prior art. The present invention has scientific and reasonable structure, safe and convenient use, and provides great help to people.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation of the present invention. In the accompanying drawings:

Fig. 1 is the three-dimensional structure schematic diagram of a kind of pre-embedded positioning device that is used for construction project that the present invention proposes;

Fig. 2 is a schematic diagram of the upper and lower axonometric three-dimensional structures of a pre-embedded positioning device for construction projects proposed by the present invention;

Fig. 3 is a schematic diagram of the exploded three-dimensional structure of the bottom part of the fixed block in a pre-embedded positioning device for construction projects proposed by the present invention;

Fig. 4 is a schematic diagram of an explosive three-dimensional structure of a positioning mobile device in a pre-embedded positioning device for construction projects proposed by the present invention;

Fig. 5 is a schematic diagram of the three-dimensional structure below the mobile protective cover in a pre-embedded positioning device for construction projects proposed by the present invention;

Fig. 6 is a three-dimensional structural schematic diagram of a pre-embedded positioning device positioning adjustment device for construction projects proposed by the present invention;

Fig. 7 is a schematic diagram of the exploded three-dimensional structure below the positioning adjustment device in a pre-embedded positioning device for construction projects proposed by the present invention;

Fig. 8 is a side view structural schematic diagram of a pre-embedded positioning device for construction projects proposed by the present invention;

In the figure: slide rail frame 1, reinforcing bracket 2, universal wheel 3, mobile protective cover 4, fixed block 5, motor cover 6, first motor 7, driving pulley 8, driving belt 9, driven pulley 10, fixed side Plate 11, moving wheel 12, first screw rod 13, positioning bracket 14, second motor 15, sliding track 16, cylinder 17, telescopic rod 18, slide rod 19, first bracket 20, drilling machine 21, drill bit 22, second bracket 23. Stabilizing angle frame 24, second screw rod 25, rotating ring 26, moving adjustment rod 27, limit connection block 28, motor 29, rotating screw rod 30, positioning plug 31, lifting frame 32.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1

Please refer to Figures 1-8, the present invention provides a technical solution: a pre-embedded positioning device for construction engineering, including a mobile protective cover 4, fixed blocks 5 and motor covers 6 are arranged on both sides of the mobile protective cover 4, The bottom ends of the fixed block 5 and the motor cover 6 are all symmetrically fixedly connected with a fixed side plate 11, and the relative inner sides of the fixed side plate 11 are connected with a moving wheel 12 in rotation, and one end of the moving wheel 12 is fixedly connected with a driven pulley 10. Belt pulley 10 is connected with driving pulley 8 transmissions by transmission belt 9, and one end of driving pulley 8 is provided with first motor 7, and driving pulley 8 is fixedly connected to the driving end of first motor 7, and driving pulley 8 is connected to one side of fixed block 5 in rotation. side, the first motor 7 is fixedly connected to one side of the fixed block 5, the inside of the moving protective cover 4 is provided with a positioning and moving device, and one side of the moving protective cover 4 is provided with a positioning adjustment device.

The working principle and application process of the present invention: when in use, the drive belt is connected to the driving pulley, and the driving pulley is fixedly connected to the driving end of the first motor, so that when the first motor is started, the driving end of the first motor will drive the driving pulley Rotate, so that the mobile protective cover moves on the top of the slide rail frame, so that the position of the mobile protective cover can be adjusted, which is convenient for positioning and use. The positioning mobile device can adjust the position of the drill bit horizontally, and then perform positioning and drilling. The positioning adjustment device can be adjusted down. The distance between a hole and the first row of holes can achieve the effect of positioning, and the use of thread adjustment can make the measurement result more accurate.

Example 2

Please refer to Figures 1-8, the present invention provides a technical solution: a pre-embedded positioning device for construction engineering, including a mobile protective cover 4, fixed blocks 5 and motor covers 6 are arranged on both sides of the mobile protective cover 4, The bottom ends of the fixed block 5 and the motor cover 6 are all symmetrically fixedly connected with a fixed side plate 11, and the relative inner sides of the fixed side plate 11 are connected with a moving wheel 12 in rotation, and one end of the moving wheel 12 is fixedly connected with a driven pulley 10. Belt pulley 10 is connected with driving pulley 8 transmissions by transmission belt 9, and one end of driving pulley 8 is provided with first motor 7, and driving pulley 8 is fixedly connected to the driving end of first motor 7, and driving pulley 8 is connected to one side of fixed block 5 in rotation. side, the first motor 7 is fixedly connected to one side of the fixed block 5, the inside of the moving protective cover 4 is provided with a positioning and moving device, and one side of the moving protective cover 4 is provided with a positioning adjustment device.

In the present invention, preferably, the positioning moving device includes a first screw 13, a positioning bracket 14 and a second motor 15, the driving end of the second motor 15 is fixedly connected with the first screw 13, and the outer side of the first screw 13 is threadedly connected with a positioning Support 14, start the second motor 15 inside the motor cover 6, the second motor 15 drives the first screw rod 13 that the drive end is fixedly connected to start to rotate, and the first screw rod 13 drives the positioning bracket 14 that is screwed on the outside to start moving, so that it can be moved horizontally Adjust the position of drill bit 22, then carry out positioning drilling.

In the present invention, preferably, the first screw rod 13 is rotatably connected to one side of the fixed block 5, the positioning bracket 14 is slidably connected to both sides of the mobile protective cover 4, and the two sides of the mobile protective cover 4 are fixedly connected with sliding rails 16 for sliding The track 16 can stabilize the movement of the positioning bracket 14 .

In the present invention, preferably, the positioning adjustment device includes a second screw rod 25, a rotating ring 26 and a moving adjustment rod 27, the outer side of the second screw rod 25 is threadedly connected with a rotating ring 26, and one end of the rotating ring 26 is rotatably connected with a moving adjusting rod 27 After the first row of holes in the location has been punched, the rotating ring 26 is rotated based on the holes in the first row, and one end of the rotating ring 26 is rotatably connected with a moving adjusting rod 27, so that the moving adjusting rod 27 and the rotating ring 26 are just It will start to move toward one end of the second screw rod 25, and adjust the distance between the next hole and the first row of holes, so that the positioning effect can be achieved, and the use of thread adjustment can make the measurement result more accurate.

In the present invention, preferably, one end of the second screw 25 is fixedly connected with the second bracket 23, and the other end of the second screw 25 is fixedly connected with the limit connecting block 28, and the second bracket 23 and the limit connecting block 28 are moved The adjustment rod 27 is fixedly connected, and one side of the second support 23 is provided with a mounting hole, and the second support 23 is fixedly connected to one side of the first support 20 by bolts, so that the positioning adjustment can be convenient for disassembly and installation.

In the present invention, preferably, both sides of the positioning bracket 14 are fixedly connected with a first bracket 20, one side of the first bracket 20 is provided with a mounting hole, the inner bottom end of the first bracket 20 is provided with a cylinder 17, and the bottom of the cylinder 17 The end is provided with telescopic rod 18, and the bottom end of telescopic rod 18 is fixedly connected with drilling machine 21, and the bottom end of drilling machine 21 is provided with drill bit 22, and the both sides of drilling machine 21 are fixedly connected with lug, and the inner side of lug is slidably connected with slide rod 19. , the sliding rods 19 are all fixedly connected to the bottom of the first bracket 20, the cylinder 17 is activated to drive the telescopic rod 18, and the telescopic rod 18 will cause the drilling machine 21 to rise and fall, and then the drilling machine 21 starts to drive the drill bit 22 to rotate, and starts drilling while facing the ground , the telescopic rod 18 sends the drill bit 22 underground until the depth of the hole meets the positioning requirements. On both sides of the drilling machine 21, lugs are arranged, and the lugs are slidably connected to the sliding rod 19. The sliding rod 19 can stabilize the drilling machine 21. The lifting can prevent the self-rotation during the punching process, so as to achieve the effect of positioning and punching.

In the present invention, preferably, the bottom end of the mobile adjustment rod 27 is fixedly connected with a motor 29, the driving end of the motor 29 is fixedly connected with a rotating screw 30, the outer thread of the rotating screw 30 is connected with a lifting frame 32, and the bottom end of the lifting frame 32 Fixedly connected with a positioning plug 31, the inside of the positioning plug 31 is hollow, the lifting frame 32 is slidably connected to the outside of the mobile adjustment rod 27, the starting motor 29 drives the rotating screw rod 30 to start rotating, and the rotating screw rod 30 can make the lifting frame 32 go up and down, thereby The positioning plug 31 stretches into the inside of the hole that has been punched for positioning, so as to be convenient for positioning and prevent the deviation of the next positioning punching, which improves the accuracy of the positioning punching and improves the positioning efficiency.

In the present invention, preferably, a slide rail frame 1 is arranged under both sides of the mobile protective cover 4, and the moving wheel 12 is arranged on the top of the slide rail frame 1, and the slide rail frame 1 can make the mobile protective cover 4 move above it.

In the present invention, preferably, the slide rail frames 1 are fixedly connected by reinforcing brackets 2, and several reinforcing frames 2 are provided. The reinforcing frames 2 can strengthen the connection between the slide rail frames 1 and stabilize their supporting functions.

In the present invention, preferably, the bottom end of the slide rail frame 1 is provided with universal wheels 3, and several universal wheels 3 are provided. a location.

The working principle and application process of the present invention: when in use, a universal wheel 3 is provided at the bottom of the slide rail frame 1, and the device can be moved to a designated position through the universal wheel 3, and then moved to another position after the work at the current position is completed. One position is convenient for it to move, can pass through the fixed block 5 and the motor cover 6 that are arranged on both sides of the mobile protective cover 4, the bottom ends of the fixed block 5 and the motor cover 6 are all symmetrically fixedly connected with fixed side plates 11, on the fixed side The relative rotation of the plate 11 is connected with a moving pulley 12, and one end of the moving pulley 12 arranged under the fixed block 5 is fixedly connected with a driven pulley 10, and the driven pulley 10 is connected to the driving pulley 8 through the transmission belt 9, and the driving pulley 8 is fixedly connected At the driving end of the first motor 7, start the first motor 7 in this way, the driving end of the first motor 7 will drive the driving pulley 8 to rotate, so that the mobile protective cover 4 can move on the top of the slide rail frame 1, so that the movement can be adjusted The position of the protective cover 4 is convenient for positioning and use. The positioning mobile device arranged inside the mobile protective cover 4 can start the horizontal positioning and punching work after the mobile protective cover 4 moves to the designated position, and start the second motor cover 6 inside. Motor 15, the second motor 15 drives the first screw rod 13 that drive end is fixedly connected and starts to rotate, and the positioning bracket 14 that the first screw rod 13 drives outer screw connection starts to move, and positioning bracket 14 is slidingly connected to the both sides of mobile protective cover 4, moves Both sides of protective cover 4 are all fixedly connected with sliding track 16, are convenient to the movement of stable positioning support 14, and drill bit 22 is arranged below mobile protective cover 4, so just can laterally adjust the position of drill bit 22, then carry out location punching, The first support 20 that is fixedly connected on both sides of positioning support 14 is provided with cylinder 17 at the inboard bottom end of first support 20, and the bottom end of cylinder 17 is provided with telescopic link 18, and is fixedly connected with at the bottom end of telescopic link 18 Drill rig 21, start cylinder 17 to drive telescopic rod 18, telescopic rod 18 will make drilling rig 21 lift, then drill rig 21 starts to drive drill bit 22 to rotate, one side begins to drill hole facing the ground, and telescopic rod 18 sends drill bit 22 underground, Until the depth of the hole meets the positioning requirements, lugs are provided on both sides of the drilling rig 21, and the lugs are slidably connected to the slide bar 19. The slide bar 19 can stabilize the lifting of the drilling rig 21 and prevent rotation during drilling. The second support 23 that is provided with on one side of the first support 20 is provided with a positioning adjustment device on one side of the second support 23. After the first row of holes of the location is punched, the holes of the first row are used as a reference to rotate Rotating ring 26, the rotating ring 26 is screwed to the outside of the second screw rod 25, the second screw rod 25 is fixedly connected between the second bracket 23 and the limit connection block 28, the second bracket 23 and the limit connection block 28 pass through the stable angle Frame 24 is fixedly connected, and the stability of second screw rod 25 can also be increased, and one end of rotating ring 26 is rotationally connected with moving adjusting rod 27, and moving adjusting rod 27 and rotating ring 26 will begin to move toward the end of second screw rod 25 like this , adjust the distance between the next hole and the first row of holes, the motor 29 fixedly connected to the bottom end of the mobile adjustment rod 27, the driving end of the motor 29 is fixedly connected with a rotating screw rod 30, and the outer side of the rotating screw rod 30 is threaded. Elevating frame 32, the bottom end of elevating frame 32 is fixedly connected with positioning plug 31, and the inside of positioning plug 31 is hollow, and elevating frame 32 is slidably connected to the outside of moving adjusting rod 27, and starter motor 29 drives rotating screw rod 30 to start rotating, and rotating screw rod 30 can make the lifting frame 32 lift, so that the positioning plug 31 can be inserted into the inside of the hole that has been positioned, so that the positioning is not fixed, and the next positioning punching can be prevented from being deviated, so that the positioning effect can be achieved. It is more accurate and improves the positioning efficiency. It can be positioned horizontally and vertically for punching, and the device can also be moved for easy use.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (4)

1. A pre-buried positioner for building engineering, including removing protection casing (4), its characterized in that: the novel anti-theft protection cover is characterized in that fixed blocks (5) and motor covers (6) are arranged on two sides of the movable protection cover (4), fixed side plates (11) are symmetrically and fixedly connected to the bottom ends of the fixed blocks (5) and the motor covers (6), movable wheels (12) are rotatably connected to the inner sides of the fixed side plates (11), driven pulleys (10) are fixedly connected to one ends of the movable wheels (12), the driven pulleys (10) are in transmission connection with driving pulleys (8) through transmission belts (9), first motors (7) are arranged at one ends of the driving pulleys (8), the driving pulleys (8) are fixedly connected to driving ends of the first motors (7), the driving pulleys (8) are rotatably connected to one sides of the fixed blocks (5), positioning and moving devices are arranged in the movable protection cover (4), and positioning and adjusting devices are arranged on one sides of the movable protection cover (4);

the positioning moving device comprises a first screw (13), a positioning bracket (14) and a second motor (15), wherein the first screw (13) is fixedly connected with the driving end of the second motor (15), and the positioning bracket (14) is connected with the outer side of the first screw (13) through threads;

the positioning adjusting device comprises a second screw rod (25), a rotating ring (26) and a movable adjusting rod (27), wherein the outer side of the second screw rod (25) is connected with the rotating ring (26) in a threaded manner, and one end of the rotating ring (26) is connected with the movable adjusting rod (27) in a rotating manner;

one end of the second screw rod (25) is fixedly connected with a second support (23), the other end of the second screw rod (25) is fixedly connected with a limit connecting block (28), the second support (23) is fixedly connected with the limit connecting block (28) through a movable adjusting rod (27), one side of the second support (23) is provided with a mounting hole, and the second support (23) is fixedly connected to one side of the first support (20) through a bolt;

the positioning device comprises a positioning support (14), wherein two sides of the positioning support are fixedly connected with a first support (20), one side of the first support (20) is provided with a mounting hole, the inner bottom end of the first support (20) is provided with an air cylinder (17), the bottom end of the air cylinder (17) is provided with a telescopic rod (18), the bottom end of the telescopic rod (18) is fixedly connected with a drilling machine (21), the bottom end of the drilling machine (21) is provided with a drill bit (22), two sides of the drilling machine (21) are fixedly connected with lugs, the inner side of each lug is slidably connected with a slide rod (19), and the slide rods (19) are fixedly connected to the bottom end of the first support (20);

the bottom end of the movable adjusting rod (27) is fixedly connected with a motor (29), the driving end of the motor (29) is fixedly connected with a rotating screw rod (30), the outer side of the rotating screw rod (30) is in threaded connection with a lifting frame (32), the bottom end of the lifting frame (32) is fixedly connected with a positioning plug (31), the inside of the positioning plug (31) is hollow, and the lifting frame (32) is in sliding connection with the outer side of the movable adjusting rod (27);

the sliding rail frames (1) are arranged below two sides of the movable protective cover (4), and the movable wheels (12) are arranged at the top ends of the sliding rail frames (1).

2. A pre-buried positioning device for construction engineering according to claim 1, wherein: the first screw rod (13) is rotationally connected to one side of the fixed block (5), the positioning support (14) is slidably connected to two sides of the movable protective cover (4), and sliding rails (16) are fixedly connected to two sides of the movable protective cover (4).

3. A pre-buried positioning device for construction engineering according to claim 2, wherein: the sliding rail frames (1) are fixedly connected through reinforcing brackets (2), and the reinforcing brackets (2) are provided with a plurality of sliding rail frames.

4. A pre-buried positioning device for construction engineering according to claim 3, wherein: the bottom of slide rail frame (1) is provided with universal wheel (3), universal wheel (3) are provided with a plurality of.