Building construction site setting-out frame for civil engineering

Abstract

The present invention provides a wire pay-off frame for building construction sites of civil engineering, which solves the problem that the wire pay-off device can only perform one wire pay-off construction at the same time when paying out the wire, resulting in low efficiency. The present invention includes a base plate, on which two front and rear first bearing support frames are fixedly provided, and a mounting shaft is rotatably provided on the two first bearing support frames, and at least two wire pay-off devices are arranged on the mounting shaft at intervals in front and behind, and a wire rope is wound around the wire pay-off device; the base plate is provided with a first rotating drive device that is transmission-connected to one end of the mounting shaft; the base plate is provided with a removable mobile rope guide, which is used to be placed at the starting position of the wire pay-off to guide the direction of the wire rope entering the wire pay-off area; the base plate is provided with a removable end positioner, which is detachably connected to the end of the wire rope, and the end positioner is used to pull the wire rope and fix the end of the wire rope at the end position of the wire pay-off.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a layout frame for a building construction site in civil engineering. Background Art

[0002] Construction layout is for the convenience of workers and to ensure construction strictly in accordance with the design drawings: Generally speaking, all building axes can be called major lines, and the corresponding minor lines are the side lines and dimension lines of structural components. Therefore, the layout specifications directly affect the appearance of the building.

[0003] However, the existing wire winding and unwinding devices still have the following problems when in use: (1) When winding the wire, since the wire rope is always wound around the same position of the rotating shaft, the wire rope is prone to stacking and entanglement, and it is easy to get stuck when unwinding the wire again; (2) When unwinding the wire, one wire winding and unwinding device can only perform one unwinding construction at the same time, with low efficiency. Summary of the Invention

[0004] In order to solve the problem that the wire winding and unwinding device in the background art can only perform one unwinding construction at the same time with low efficiency, the present invention provides a layout frame for a building construction site in civil engineering.

[0005] The technical solution of the present invention is: A layout frame for a building construction site in civil engineering, including a bottom plate, on which two first bearing support frames are fixedly arranged front and back. A mounting shaft is rotatably arranged on the two first bearing support frames. The mounting shaft extends in the front-back direction, and at least two wire winding and unwinding devices are arranged at intervals along the front-back direction on the mounting shaft. A wire rope is wound around the wire winding and unwinding device;

[0006] A first rotation driving device is arranged on the bottom plate, and the first rotation driving device is in transmission connection with one end of the mounting shaft. The first rotation driving device is used to drive the mounting shaft to rotate forward and backward;

[0007] A removable mobile wire guide is arranged on the bottom plate. The number of the mobile wire guides is the same as the number of the wire winding and unwinding devices. The mobile wire guide is used to be placed at the wire unwinding starting position to guide the direction of the wire rope entering the wire unwinding area;

[0008] A removable end positioner is arranged on the bottom plate. The number of the end positioners is the same as the number of the wire winding and unwinding devices. The end positioner is detachably connected to the end of the wire rope. The end positioner is used to pull the wire rope and fix the end of the wire rope at the wire unwinding end position.

[0009] Preferably, the mobile wire guide includes a counterweight block. A first wire threading device is fixedly arranged on the top of the counterweight block. A wire hole for the wire rope to pass through is arranged in the middle of the first wire threading device. The wire hole is a left-right through structure.

[0010] Preferably, the first rope threading device includes two second fixed shafts arranged at intervals in the front-back direction. The second fixed shafts extend in the up-down direction, and second guide wheels are rotatably arranged on the second fixed shafts;

[0011] The middle part of the second guide wheel is recessed inward to form an annular isosceles trapezoidal groove. The front and back sides of the two second guide wheels are abutted against each other so that the two isosceles trapezoidal grooves cooperate with each other to form a rope hole.

[0012] Preferably, at least two positioning holes penetrating up and down are formed in the counterweight block. A first drill rod is inserted into the positioning holes. The first drill rod has an L-shaped rod structure, and the lower end of the first drill rod has a tapered head structure;

[0013] A positioning slot hole with an upward opening is formed in the bottom plate. The lower end of the first drill rod passes through the positioning hole and is inserted into the positioning slot hole.

[0014] Preferably, a hanging buckle is fixedly arranged at the end of the wire rope;

[0015] The end locator includes a second drill rod arranged vertically. The second drill rod extends in the up-down direction, and the lower end of the second drill rod has a tapered head structure;

[0016] A hanging ring is fixedly arranged on the second drill rod, and the hanging buckle is hooked on the hanging ring;

[0017] A positioning tube extending in the up-down direction is fixedly arranged on the bottom plate. The lower end of the second drill rod is inserted into the positioning tube.

[0018] Preferably, the wire rope winding and unwinding device includes two baffles arranged at intervals in the front-back direction on the mounting shaft. The baffles are perpendicular to the mounting shaft;

[0019] Two expansion and contraction rods capable of moving left and right are arranged on the two baffles. The expansion and contraction rods extend in the front-back direction, and the mounting shaft is located between the two expansion and contraction rods;

[0020] One end of the wire rope is fixedly arranged on the mounting shaft between the two baffles, and a part of the wire rope is wound around the two expansion and contraction rods;

[0021] An automatic adjustment mechanism for driving the expansion and contraction rod to move is arranged on the baffle. One end of the automatic adjustment mechanism is connected to the expansion and contraction rod. The automatic adjustment mechanism is used to drive the expansion and contraction rod to move left and right to automatically tighten the wire rope wound around the two expansion and contraction rods.

[0022] Preferably, two chutes that are radially symmetric about the mounting shaft are formed on the baffle. The chutes extend in the left-right direction and are transparent in the front-back direction;

[0023] Expansion and contraction rods are inserted into the front and back corresponding chutes on the two baffles. The expansion and contraction rods extend in the front-back direction, and the expansion and contraction rods can move left and right along the chutes;

[0024] The self - adjusting mechanism includes a hoop fixedly arranged in the middle of the baffle. The hoop is sleeved on the installation shaft. Springs are fixedly arranged on both the left and right sides of the hoop, and the other ends of the springs are fixedly connected to the expansion and contraction rods. The springs are used to push the expansion and contraction rods to move left and right in the sliding groove.

[0025] Preferably, a near - mouth end wire guide extending in the front - rear direction is provided on the bottom plate;

[0026] The near - mouth end wire guide includes a long strip extending in the front - rear direction. A plurality of second wire threading devices arranged at intervals in the front - rear direction are fixedly provided on the top of the long strip. The second wire threading devices have the same structure as the first wire threading devices, and the second wire threading devices correspond to the wire winding and unwinding devices one - to - one from left to right.

[0027] Preferably, guide plates are provided on both the left and right sides of the long strip. The guide plates are L - shaped plates extending in the front - rear direction. The guide plates are fixedly arranged on the bottom plate, and the long strip is slidably arranged back and forth between the two guide plates;

[0028] A reciprocating mechanism for driving the long strip to move back and forth is provided on the bottom plate, and the reciprocating mechanism is connected to the long strip.

[0029] Preferably, universal wheels are provided at the bottom of the bottom plate, and a handrail is fixedly arranged on the bottom plate.

[0030] Advantages of the present invention: This device adopts multiple sets of movable wire guides and end positioners to cooperate with the wire winding and unwinding devices, which can ensure the normal progress of multiple - wire unwinding construction while ensuring the straightness of the wire rope when it reaches the unwinding area. At the same time, it also avoids the phenomenon of the wire rope knotting during wire winding, enabling the wire unwinding construction to proceed quickly and well. Brief Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, the following - described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a schematic plan view of the wire unwinding rack in a top - down perspective for Embodiment 1;

[0033] Figure 2 For Figure 1 the wire winding and unwinding device and the first driving device in

[0034] Figure 3 For Figure 2 the schematic structural view of the wire winding and unwinding device in a front - view perspective in

[0035] Figure 4Schematic plan view of the baffle in 3 from a top-down perspective;

[0036] Figure 5 is Figure 2 Schematic plan view of the telescopic rod in

[0037] Figure 6 is Figure 1 Schematic view of the reciprocating wire guide in from a front view perspective;

[0038] Figure 7 is Figure 1 Schematic view of the mobile wire guide in from a left view perspective;

[0039] Figure 8 is Figure 1 Schematic view of the end locator in from a front view perspective;

[0040] In the figure, 1 is the bottom plate, 2 is the mounting shaft, 3 is the first bearing support frame, 4 is the first rotary drive device, 401 is the first forward and reverse motor, 402 is the first reduction gear, 5 is the driving gear, 6 is the driven gear, 7 is the wire rope, 8 is the hanging buckle, 9 is the baffle, 901 is the chute, 10 is the hoop plate, 1001 is the first fixing rod, 11 is the telescopic rod, 1101 is the second fixing rod, 12 is the spring, 13 is the second rotary drive mechanism, 14 is the lead screw, 15 is the second bearing support frame, 16 is the long strip, 1601 is the internal thread hole, 17 is the first fixing shaft, 18 is the first guide wheel, 19 is the guide plate, 20 is the mobile wire guide, 21 is the counterweight, 22 is the second fixing shaft, 23 is the second guide wheel, 24 is the first drill rod, 25 is the end locator, 26 is the second drill rod, 27 is the connecting rod, 28 is the hanging ring, 29 is the handrail. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Embodiment 1: A construction site layout frame for civil engineering building construction, as Figure 1 shown, includes a bottom plate 1. Universal wheels are provided at the bottom of the bottom plate 1, and a handrail 29 is fixedly provided on the bottom plate 1 to facilitate the movement of the device.

[0043] Two first bearing support frames 3 are fixedly provided on the bottom plate 1, front and back. The first bearing support frame 3 includes an inverted V-shaped frame and a bearing fixedly provided at the top of the V-shaped frame.

[0044] A mounting shaft 2 is passed through the bearings of two first bearing support frames 3. The mounting shaft 2 extends in the front-rear direction. A first rotation driving device 4 is provided on the bottom plate 1. As Figure 1 and Figure 2 shown, the first rotation driving device 4 in this embodiment includes a first forward and reverse motor 401 and a first speed reducer 402 provided on the output shaft of the first forward and reverse motor 401. A driving gear 5 is provided on the output shaft of the first speed reducer 402. One end of the mounting shaft 2 is fixedly provided with a driven gear 6. The driven gear 6 meshes with the driving gear 5. The first rotation driving device 4 is used to drive the mounting shaft 2 to rotate forward and backward.

[0045] Four wire winding and unwinding devices are arranged on the mounting shaft 2 at intervals in the front-rear direction. A wire rope 7 is wound around the wire winding and unwinding device. A hanging buckle 8 is fixedly provided at the end of the wire rope 7.

[0046] As Figure 2 shown, the wire winding and unwinding device in this embodiment includes two baffles 9 arranged on the mounting shaft 2 at intervals in the front-rear direction. The baffles 9 are perpendicular to the mounting shaft 2.

[0047] Two left and right chutes 901 that are radially symmetric about the mounting shaft 2 are provided on the baffle 9. The chutes 901 extend in the left-right direction and are transparent in the front-rear direction.

[0048] A telescopic rod 11 is passed through the front-rear corresponding chutes 901 on the two baffles 9. The telescopic rod 11 extends in the front-rear direction, and the telescopic rod 11 can move left and right along the chute 901. The mounting shaft 2 is located between the two telescopic rods 11.

[0049] One end of the wire rope 7 is fixedly provided on the mounting shaft 2 between the two baffles 9, and a part of the wire rope 7 is wound around the two telescopic rods 11.

[0050] A self-adjusting mechanism for driving the telescopic rod 11 to move is provided on the baffle 9. One end of the self-adjusting mechanism is connected to the telescopic rod 11. The self-adjusting mechanism is used to drive the telescopic rod 11 to move left and right to automatically tighten the wire rope 7 wound around the two telescopic rods 11, preventing the wire rope 7 on the wire winding and unwinding device from loosening and winding as the wire rope 7 is released.

[0051] As Figure 2 and Figure 3 shown, the self-adjusting mechanism includes a collar fixedly provided in the middle of the baffle 9. The collar is sleeved on the mounting shaft 2. For the convenience of installation, the baffle 9 in this embodiment includes two equally divided arc-shaped plates on the left and right. Correspondingly, the collar includes two equally divided arc-shaped hoop plates 10 on the left and right. The hoop plates 10 are fixedly provided on the baffle 9. The two hoop plates 10 are tightened on the mounting shaft 2 by bolts.

[0052] As Figure 4 shown, first fixing rods 1001 are fixedly provided on the sides of the two hoop plates 10. AsFigure 5 As shown in the figure, a second fixing rod 1101 is vertically fixed at the end of the telescopic rod 11. A spring 12 is sleeved on the first fixing rod 1001 and the second fixing rod 1101, and the two ends of the spring 12 are respectively fixedly connected to the hoop plate 10 and the telescopic rod 11. The spring 12 is used to push the telescopic rod 11 to move left and right in the sliding groove 901.

[0053] In order to facilitate the messy stacking and winding of the wire rope 7 around the wire winding and unwinding device during wire winding and unwinding, and to unify the position where the wire rope 7 leaves the bottom plate 1, as Figure 1 shown, a near-mouth end wire guide is provided on the bottom plate 1 and extends in the front-rear direction.

[0054] The near-mouth end wire guide includes a long strip 16 extending in the front-rear direction. A plurality of second wire threading devices are fixedly provided on the top of the long strip 16 at intervals in the front-rear direction. The second wire threading devices have the same structure as the first wire threading devices, and the second wire threading devices and the wire winding and unwinding devices are in one-to-one left-right correspondence.

[0055] Specifically, as Figure 1 and Figure 6 shown, the second wire threading device in this embodiment includes two first fixing shafts 17 arranged at intervals in the front-rear direction. The first fixing shafts 17 extend in the up-down direction, and a first guide wheel 18 is rotatably provided on the first fixing shafts 17.

[0056] The middle part of the first guide wheel 18 is recessed inward to form an annular isosceles trapezoidal groove. The front and rear sides of the two first guide wheels 18 are in contact with each other, so that the isosceles trapezoidal grooves on the two first guide wheels 18 cooperate with each other to form a wire hole for the wire rope 7 to pass through.

[0057] At the same time, guide plates 19 are provided on both the left and right sides of the long strip 16. The guide plates 19 are L-shaped plates extending in the front-rear direction. The guide plates 19 are fixedly provided on the bottom plate 1, and the long strip 16 is slidably arranged on the bottom plate 1 between the two guide plates 19 in the front-rear direction. As Figure 6 shown, an internally threaded hole 1601 that penetrates through in the front-rear direction is opened inside the long strip 16.

[0058] A reciprocating mechanism for driving the long strip 16 to reciprocate in the front-rear direction is provided on the bottom plate 1. As Figure 1 shown, the reciprocating mechanism includes a lead screw 14 threaded through the internally threaded hole 1601 of the long strip 16. The lead screw 14 is threadedly connected to the internally threaded hole 1601. The front and rear ends of the lead screw 14 both extend outside the internally threaded hole 1601, and shaft rod heads are fixedly provided at the ends of the lead screw 14. The shaft rod heads are rotatably arranged on the second bearing support frame 15. The second bearing support frame 15 has the same structure as the first bearing support frame 3.

[0059] The reciprocating mechanism further includes a second rotary drive mechanism 13 fixedly arranged on the base plate 1. The structure of the second rotary drive mechanism 13 is the same as that of the first rotary drive device 4. The output shaft of the second rotary drive mechanism 13 is in gear transmission connection with one of the shaft head gears on the lead screw 14.

[0060] A removable mobile wire guide 20 is arranged on the base plate 1. The number of the mobile wire guides 20 is the same as the number of the wire winding and unwinding devices. The mobile wire guide 20 is used to be placed at the wire unwinding starting position to guide the direction of the wire rope 7 entering the wire unwinding area.

[0061] Specifically, the mobile wire guide 20 in this embodiment includes a counterweight 21. A first wire threading device is fixedly arranged at the top of the counterweight 21. The structure of the first wire threading device is the same as that of the second wire threading device. The first wire threading device includes two second fixed shafts 22 arranged at intervals front and back. The second fixed shafts 22 extend in the up and down direction, and second guide wheels 23 are rotatably arranged on the second fixed shafts 22.

[0062] The middle part of the second guide wheel 23 is recessed inward to form an annular isosceles trapezoidal groove. The front and back sides of the two second guide wheels 23 are abutted against each other so that the two isosceles trapezoidal grooves cooperate with each other to form a wire hole for the wire rope 7 to pass through.

[0063] In order to prevent the mobile wire guide 20 from moving during wire unwinding and when being placed on the base plate 1 for transportation, as Figure 1 and Figure 7 shown, positioning holes penetrating up and down are formed at the four corners of the counterweight 21. First drill rods 24 are inserted into the positioning holes. The first drill rods 24 are of an L-shaped rod structure, and the lower ends of the first drill rods 24 are of a tapered head structure.

[0064] Positioning groove holes with upper openings are formed on the base plate 1. The lower ends of the first drill rods 24 pass through the positioning holes and are inserted into the positioning groove holes. During wire unwinding, the lower ends of the first drill rods 24 are used to be inserted into the ground to fix the position of the counterweight 21.

[0065] A removable end locator 25 is arranged on the base plate 1. The number of the end locators 25 is the same as the number of the wire winding and unwinding devices. The end locator 25 is detachably connected to the end of the wire rope 7. The end locator 25 is used to pull the wire rope 7 and fix the end of the wire rope 7 at the wire unwinding end position.

[0066] Specifically, as Figure 1 and Figure 8 shown, the end locator 25 includes a vertical second drill rod 26. The second drill rod 26 extends in the up and down direction, and the lower end of the second drill rod 26 is of a tapered head structure.

[0067] A hanging ring 28 is fixedly arranged on the second drill rod 26. The hanging buckle 8 is hooked on the hanging ring 28.

[0068] A positioning tube extending in the vertical direction is fixedly provided on the bottom plate 1, and the lower end of the second drill rod 26 is inserted into the positioning tube.

[0069] Usage method: Before wire laying, pull the device to the construction area where wire laying is required. Pass the wire rope 7 and the hanging buckle 8 through the rope holes of the second wire threading device on the long strip 16 and the first wire threading device on the movable wire guide 20, and hook the hanging buckle 8 on the hanging ring 28.

[0070] During wire laying, each of multiple wire layers holds a set of movable wire guides 20 and end positioners 25 to move. Place the movable wire guide 20 at the starting position of wire laying to guide the direction of the wire rope 7 entering the wire laying area. Use the first drill rod 24 to fix the movable wire guide 20 to the ground at the starting position of wire laying to prevent the movable wire guide 20 from moving during wire laying.

[0071] Then, the wire layer holds the end positioner 25 and drives the wire rope 7 to continue moving forward until the end position of wire laying, and then insert the lower end of the end positioner 25 into the ground at the end position of wire laying.

[0072] After use, reinstall the movable wire guide 20 and the end positioner 25 on the bottom plate 1, and fix them with the first drill rod 24 and the second drill rod 26 respectively to prevent the movable wire guide 20 and the end positioner 25 from slipping on the bottom plate 1 during transportation.

[0073] Embodiment 2: A wire laying frame for a building construction site in civil engineering. Two wire winding and unwinding devices are arranged at intervals in the front and rear on the installation shaft 2, and other structures are the same as those in Embodiment 1.

[0074] Embodiment 3: A wire laying frame for a building construction site in civil engineering. In this embodiment, the reciprocating mechanism and the guide plate 19 are no longer provided, and the long strip 16 is fixedly arranged on the bottom plate 1. Other structures are the same as those in Embodiment 1.

[0075] Embodiment 4: A wire laying frame for a building construction site in civil engineering. In this embodiment, the long strip 16 and the second wire threading device are no longer provided. Other structures are the same as those in Embodiment 3.

[0076] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A construction site layout frame for building construction in civil engineering, characterized in that: It includes a bottom plate (1). Two first bearing support frames (3) are fixedly arranged on the bottom plate (1) in the front and back directions. A mounting shaft (2) is rotatably arranged on the two first bearing support frames (3). The mounting shaft (2) extends in the front and back directions. At least two wire winding and unwinding devices are arranged on the mounting shaft (2) at intervals in the front and back directions. A wire rope (7) is wound around the wire winding and unwinding device; A first rotation driving device (4) is arranged on the bottom plate (1). The first rotation driving device (4) is in transmission connection with one end of the mounting shaft (2). The first rotation driving device (4) is used to drive the mounting shaft (2) to rotate forward and backward; A removable mobile wire guide (20) is arranged on the bottom plate (1). The number of the mobile wire guides (20) is the same as the number of the wire winding and unwinding devices. The mobile wire guide (20) is used to be placed at the wire releasing starting position to guide the direction of the wire rope (7) entering the wire releasing area; A removable end locator (25) is arranged on the bottom plate (1). The number of the end locators (25) is the same as the number of the wire winding and unwinding devices. The end locator (25) is detachably connected to the end of the wire rope (7). The end locator (25) is used to pull the wire rope (7) and fix the end of the wire rope (7) at the wire releasing end position; The mobile wire guide (20) includes a counterweight block (21). A first wire threading device is fixedly arranged at the top of the counterweight block (21). A wire hole for the wire rope (7) to pass through is arranged in the middle of the first wire threading device. The wire hole is a left-right through structure; A hanging buckle (8) is fixedly arranged at the end of the wire rope (7); The end locator (25) includes a second drill rod (26) arranged vertically. The second drill rod (26) extends in the up and down directions. The lower end of the second drill rod (26) is of a tapered head structure; A hanging ring (28) is fixedly arranged on the second drill rod (26). The hanging buckle (8) is hooked on the hanging ring (28); A positioning tube extending in the up and down directions is fixedly arranged on the bottom plate (1). The lower end of the second drill rod (26) is inserted into the positioning tube; 2. The building construction site setting-out frame for civil engineering according to claim 1, wherein: The first wire threading device includes two second fixed shafts (22) arranged at intervals in the front and back directions. The second fixed shafts (22) extend in the up and down directions. A second guide wheel (23) is rotatably arranged on the second fixed shafts (22); An annular isosceles trapezoidal groove is formed by inward depression in the middle of the second guide wheel (23). The front and back sides of the two second guide wheels (23) are abutted against each other so that the two isosceles trapezoidal grooves cooperate to form a wire hole; 3. The building construction site setting-out frame for civil engineering according to claim 1 or 2, characterized in that: At least two up-and-down through positioning holes are formed in the counterweight block (21). A first drill rod (24) is inserted into the positioning holes. The first drill rod (24) is of an L-shaped rod structure. The lower end of the first drill rod (24) is of a tapered head structure; A positioning groove hole with an upper opening is formed on the bottom plate (1). The lower end of the first drill rod (24) passes through the positioning hole and is inserted into the positioning groove hole; 4. The building construction site setting-out frame for civil engineering according to claim 1 or 2, characterized in that: The wire winding and unwinding device includes two baffles (9) arranged at intervals in the front and back directions on the mounting shaft (2). The baffles (9) are perpendicular to the mounting shaft (2); Two expandable and contractible rods (11) capable of moving left and right are arranged on the two baffles (9). The expandable and contractible rods (11) extend in the front and back directions. The mounting shaft (2) is located between the two expandable and contractible rods (11); One end of the wire rope (7) is fixedly arranged on the mounting shaft (2) between the two baffles (9), and a part of the wire rope (7) is wound around the two expansion and contraction rods (11); The baffle (9) is provided with a self-adjusting mechanism for driving the expansion and contraction rod (11) to move. One end of the self-adjusting mechanism is connected to the expansion and contraction rod (11), and the self-adjusting mechanism is used to drive the expansion and contraction rod (11) to move left and right to automatically tighten the wire rope (7) wound around the two expansion and contraction rods (11).

5. The building construction site setting-out frame for civil engineering according to claim 4, characterized in that: Two left and right chutes (901) radially symmetric about the mounting shaft (2) are formed on the baffle (9). The chute (901) extends in the left and right direction and is transparent in the front and back directions; The expansion and contraction rods (11) are inserted into the front and back corresponding chutes (901) on the two baffles (9). The expansion and contraction rods (11) extend in the front and back direction, and the expansion and contraction rods (11) can move left and right along the chutes (901); The self-adjusting mechanism includes a hoop fixedly arranged in the middle of the baffle (9). The hoop is sleeved on the mounting shaft (2). Springs (12) are fixedly arranged on both the left and right sides of the hoop. The other end of the spring (12) is fixedly connected to the expansion and contraction rod (11). The spring (12) is used to push the expansion and contraction rod (11) to move left and right in the chute (901).

6. The building construction site setting-out frame for civil engineering according to claim 1 or 2 or 5, characterized in that: A near-end wire guide extending in the front and back direction is arranged on the bottom plate (1); The near-end wire guide includes a long strip (16) extending in the front and back direction. A plurality of second wire threading devices arranged at intervals in the front and back direction are fixedly arranged on the top of the long strip (16). The second wire threading devices have the same structure as the first wire threading devices, and the second wire threading devices correspond to the wire winding and unwinding devices one by one in the left and right direction.

7. The building construction site setting-out frame for civil engineering according to claim 6, characterized in that: Guide plates (19) are arranged on both the left and right sides of the long strip (16). The guide plates (19) are L-shaped plates extending in the front and back direction. The guide plates (19) are fixedly arranged on the bottom plate (1), and the long strip (16) is slidably arranged between the two guide plates (19) in the front and back direction; A reciprocating mechanism for driving the long strip (16) to reciprocate in the front and back direction is arranged on the bottom plate (1). The reciprocating mechanism is connected to the long strip (16).

8. The building construction site setting-out frame for civil engineering according to claim 1 or 2 or 5 or 7, characterized in that: Universal wheels are arranged at the bottom of the bottom plate (1), and a handrail (29) is fixedly arranged on the bottom plate (1).

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