Auxiliary paying-off device for building construction foundation pit

Abstract

The invention relates to the technical field of foundation pit excavation pay-off, and discloses a building construction foundation pit auxiliary pay-off device which comprises a lime cavity for storing lime and a water cavity for storing water. The lower side of the lime cavity is connected with a discharging pipe, and the lower side of the water cavity is connected with a drainage pipe. The tail end of the drainage pipe is connected with the middle part of the blanking pipe, so that lime in the blanking pipe is infiltrated by water; the drainage pipe is connected with the discharging pipe, so that water infiltrates lime in the discharging pipe and is mixed with the lime to react, the lime can be prevented from drifting away along with wind in the falling process, and then it is guaranteed that mortar accurately falls to the ground to achieve paying off; the full contact of the lime and the water is facilitated, and the impact of the water on the scattered lime is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit excavation and setting out, and in particular to an auxiliary setting out device for a foundation pit in a building construction. Background Art

[0002] Laying out the foundation pit is an important part of building construction. It includes: determining the excavation boundary of the foundation pit, calculating the coordinates of each corner point of the foundation pit according to the foundation plan and construction drawings, placing the total station or theodolite on the control point, accurately calibrating the position of the corner points of the foundation pit on the spot through the method of coordinate surveying, and marking them with wooden stakes or steel bars, measuring the length of each side of the foundation pit with a steel ruler or total station, and checking whether the dimensions meet the design requirements; laying out the foundation pit with white lime. After the corner points and boundary lines of the foundation pit are determined, connect the corner points with a string to form the outline of the foundation pit, and use white lime to spread a clear excavation boundary line of the foundation pit along the string so that construction personnel can clearly understand the excavation scope.

[0003] Common ways of laying out lime include: manually grabbing the lime and directly spreading it manually; or scooping the lime with a shovel and laying it out by tapping the shovel; or using a moving lime bucket to gradually drop the lime during movement.

[0004] The patent with publication number CN107905074B discloses a lime laying vehicle for road construction. The laying vehicle automatically spreads lime and lays out the line while driving at a constant speed. At the same time, the lime can trigger a water trigger mechanism during the laying process, so that the auxiliary water tank can perform water sprinkling. By sprinkling water on the lime, the lime powder can be prevented from flying around. The laying vehicle has the following shortcomings during use: in the case of wind, part of the lime will be blown away by the wind when it falls from the feed pipe to the ground; if the amount of water is small, it cannot effectively cover the lime completely, and the water only contacts the surface part of the lime, so the lime fixing effect is limited; if the amount of water is large, it is easy to impact and disperse the lime, resulting in irregular laying out. Summary of the invention

[0005] The object of the present invention is to provide a construction foundation pit auxiliary layout device in order to solve at least one of the problems in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions: An auxiliary laying-out device for a foundation pit of a building construction comprises a lime chamber for storing lime and a water chamber for storing water; a feed pipe is connected to the lower side of the lime chamber, and a drainage pipe is connected to the lower side of the water chamber; the end of the drainage pipe is connected to the middle of the feed pipe to allow water to soak the lime in the feed pipe.

[0007] Furthermore, it also includes a frame supporting the lime chamber and the water chamber, a rotating shaft is rotatably installed on the lower side of the frame, and both ends of the rotating shaft are connected to main wheels.

[0008] Furthermore, a dust-discharging rotating wheel is provided on the inner side of the upper part of the discharge pipe, and the axle of the rotating wheel extends out of the discharge pipe and rotates along with the rotating shaft through a gear set.

[0009] Furthermore, a box body is provided on the upper side of the frame, a conical bucket is provided in the box body, the ash chamber is in the box body above the conical bucket, the water chamber is in the box body below the conical bucket, and the discharge pipe passes through the lower wall of the box body.

[0010] Furthermore, a reciprocating shaking plate for making the water slosh is arranged in the water cavity, and a plurality of rubber sheets are inlaid on the side wall of the conical bucket, and the inner side and the outer side of the rubber sheet are in contact with the lime and the water respectively.

[0011] Furthermore, it also includes a swing arm, which passes through the lower wall of the box and is rotatably connected to the lower wall of the box, and the upper end of the swing arm is connected to the toggle plate; the rotating shaft is provided with a crank part, and a connecting rod is hinged between the crank part and the lower end of the swing arm.

[0012] Furthermore, a slotted cone for opening a wire laying groove on the ground is provided at the lower middle part of the front end of the frame, and the slotted cone corresponds to the feed pipe in front and behind.

[0013] Furthermore, a hand push frame is connected to the rear side of the frame, and two auxiliary wheels are installed on the lower side of the middle part of the hand push frame. The two auxiliary wheels are symmetrically arranged on both sides of the wire laying groove and roll along the ground.

[0014] Furthermore, a guide wheel that moves along the wire-releasing groove is installed on the lower side of the middle part of the hand push frame.

[0015] Furthermore, a plurality of radial piercing rods are evenly distributed on the outer circumference of the guide wheel, and the piercing rods pierce holes at the bottom of the wire laying groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The drainage pipe of the present invention is connected with the feeding pipe, so that water in the feeding pipe soaks the lime and reacts with the lime, which can prevent the lime from being scattered by the wind during the falling process, thereby ensuring that the mortar falls accurately to the ground to achieve the laying line; the lime and water are mixed and reacted in the feeding pipe, which is more conducive to the full contact between the lime and the water, and avoids the impact of water on the spread lime; The water cavity of the present invention is located at the lower outer side of the conical lime cavity, which not only ensures the conical structure of the lime for easy falling, but also makes the overall structure compact; Corresponding to the positions of the ash chamber and the water chamber, the main wheel of the present invention makes the toggle plate swing in the water through the crank rocker mechanism, and the water wave impacts the rubber sheet, transmitting vibration to the ash in the ash chamber, thereby overcoming the problem of the difficulty of the ash falling. The present invention uses a slotting cone to make slots on the ground, which can increase the amount of water, so that the lime and water are fully mixed and contacted, and the lime water falls into the slot, the line is laid out regularly, and the lime is completely prevented from being scattered. After being air-dried, it also has a strong windproof ability; The invention reduces the phenomenon of skewed line laying by means of guide wheels; the punching rod punches holes in the groove to make the ash slurry penetrate into a section below the ground, thereby increasing the line laying depth and preventing the line laying from being damaged by personnel and mechanical equipment at the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the working state of the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from a bottom viewing angle.

[0019] Figure 3 It is a schematic diagram of the auxiliary wheel and guide wheel structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the box section of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle when the box body is removed.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the present invention from a second viewing angle when the box body is removed.

[0023] Figure 7 It is a schematic diagram of the rotating wheel structure of the present invention.

[0024] Figure 8 It is a side view structural schematic diagram of the working state of the present invention.

[0025] Fig. 9 It is a schematic diagram of the side structure of the walking state of the present invention.

[0026] In the figure: 1, box body; 2, conical bucket; 3, lime chamber; 4, water chamber; 5, feed pipe; 6, drain pipe; 7, frame; 8, push frame; 9, shaft; 10, main wheel; 11, rotating wheel; 12, driven gear; 13, driving gear; 14, swing arm; 15, toggle plate; 16, crank; 17, connecting rod; 18, rubber sheet; 19, slotted cone; 20, auxiliary wheel; 21, lifting frame; 22, guide rod; 23, first pin; 24, first positioning hole; 25, guide wheel; 26, piercing rod; 27, flip frame; 28, fan-shaped plate; 29, second pin; 30, second positioning hole. DETAILED DESCRIPTION

[0027] The present invention is now described in further detail in conjunction with the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0028] Specific embodiments of the auxiliary laying-out device for foundation pit of building construction provided by the present invention: Please refer to the attached Figure 1-9 The auxiliary laying-out device for foundation pit of building construction comprises a lime chamber 3 for storing lime, a water chamber 4 for storing water, and a frame 7 for supporting the lime chamber 3 and the water chamber 4.

[0029] like Figure 4 As shown, a box body 1 is provided on the upper side of the frame 7, a conical bucket 2 is provided in the box body 1, a lime chamber 3 is provided in the box body 1 above the conical bucket 2, and a water chamber 4 is provided in the box body 1 below the conical bucket 2.

[0030] Different from the structure in the prior art in which the ash storage container and the water storage container are arranged side by side, the water chamber 4 of this embodiment is surrounded by the outer side of the lower part of the ash chamber 3, which not only ensures the conical shape of the lower part of the ash chamber 3 and makes the ash easy to fall, but also makes the structure more compact, the box body 1 has a regular shape and a small overall size.

[0031] The upper side of the box body 1 is provided with an ash inlet corresponding to the ash chamber 3. A water inlet pipe is connected to the side of the box body 1, and the water inlet pipe is connected to the water chamber 4. In some embodiments, a cover may be provided on the upper end of the ash inlet and the water inlet pipe.

[0032] The lower side of the lime chamber 3 is connected with a feed pipe 5, which passes through the lower wall of the box body 1. The lower side of the water chamber 4 is connected with a drain pipe 6; the end of the drain pipe 6 is connected to the middle of the feed pipe 5, so that the lime in the feed pipe 5 is soaked by water.

[0033] A valve is installed on the drain pipe 6, and the valve can be opened and closed. When working, the valve is opened; when not working, the valve is closed. In some embodiments, the valve is preferably a flow rate regulating valve that can adjust the water discharge speed.

[0034] When the valve is opened, the water in the water chamber 4 falls under the action of gravity, fully contacts and mixes with the lime falling in the discharge pipe 5, and a chemical reaction occurs; the lime and water are mixed into a mixed liquid and fall, and in the process of the lime soaked in water being discharged from the discharge pipe 5 and falling to the ground, it is affected by the external wind and is not easy to drift around, thereby reducing the waste of lime and allowing the lime to accurately fall to the predetermined position on the ground, making the line-laying trajectory more accurate.

[0035] The white ash that reacts with water has strong integrity after drying on the ground, and the fine particles are greatly reduced. Even after drying, it is not easy to be blown away by the wind, ensuring the accuracy of the white ash's position on the ground, thereby improving the timeliness of laying out the lines.

[0036] In some other embodiments, the lower end of the feed pipe 5 is connected to a mixing pipe, which is arranged horizontally and closed at both ends. The lower end of the feed pipe 5 is connected to the upper side of the middle part of the mixing pipe, the drainage pipe 6 extends into the first end of the mixing pipe, and an opening is provided at the lower side of the second end of the mixing pipe. In this way, lime and water are mixed in the mixing pipe, water enters from the first end and mixes with the lime in the middle, and then the lime-water mixture is discharged from the opening at the lower side of the second end of the mixing pipe; the lime and water are mixed and reacted more fully, and the discharge of dry lime is avoided.

[0037] The lower side of the frame 7 is rotatably mounted with a rotating shaft 9, and the two ends of the rotating shaft 9 are connected to main wheels 10; the rotating shaft 9 is located at the lower side of the front part of the box body 1. The rear side of the frame 7 is connected with a hand push frame 8. When in use, the frame 7 and the box body 1 can be moved by pushing the hand push frame 8, and the main wheels 10 and the rotating shaft 9 rotate accordingly.

[0038] In order to stabilize the falling speed of the lime, in this embodiment, a ash discharging wheel 11 is provided on the inner side of the upper part of the discharge pipe 5, and a cube shell is provided on the upper part of the discharge pipe 5. The cube shell is connected in series to the upper part of the discharge pipe 5, and the wheel 11 is inside the cube shell.

[0039] The wheel 11 includes an axle, and a plurality of radial partitions are evenly arranged on the outer circumference of the axle. The ash in the ash chamber 3 falls to the upper part of the discharge pipe 5 and falls between the partitions on the upper side of the axle. Through the continuous rotation of the wheel 11, the ash between the partitions on the upper side of the axle is brought to the lower side of the axle, and the ash can fall and then mix with the water from the side drainage pipe 6.

[0040] The axle of the rotating wheel 11 extends to the outside of the feeding tube 5, i.e., the cube shell, and rotates with the rotating shaft 9 through the gear set; in this embodiment, the gear set includes a driven gear 12 and a driving gear 13 that mesh with each other, the driven gear 12 is connected to the outer end of the axle of the rotating wheel 11, and the driving gear 13 is installed on the outer side of the middle part of the rotating shaft 9. During the rotation of the rotating shaft 9, the rotating wheel 11 is rotated through the gear set, so that the lime falls evenly. When the frame 7 stops moving and the rotating shaft 9 no longer rotates, the rotating wheel 11 will block the lime from falling.

[0041] In the prior art, although the lower part of the container for accommodating powdered materials adopts a conical structure to facilitate material unloading, powdered materials such as lime are prone to compaction and arching, resulting in difficulty in unloading. The prior art adopts vibration and other methods to facilitate material unloading. However, adding a vibration motor to the wire-laying device is not only a waste of resources, but also has a high cost.

[0042] Therefore, in this embodiment, combined with the unique design of the structure in which the water cavity 4 surrounds the lime cavity 3, a reciprocating toggle plate 15 is provided in the water cavity 4 to make the water shake, and a plurality of rubber sheets 18 are inlaid on the side wall of the conical bucket 2, and the inner and outer sides of the rubber sheets 18 are in contact with the lime and the water respectively. Specifically, a plurality of strip holes are provided on the side wall of the conical bucket 2, and the edges of the rubber sheets 18 are sealed and connected with the inner walls of the strip holes. The rubber sheets 18 are in the shape of rectangular sheets. In some other embodiments, the side wall of the conical bucket 2 may be provided with circular holes and circular sheets of rubber sheets 18.

[0043] The rubber sheet 18 is flexible and elastic. The toggle plate 15 moves back and forth in the water chamber 4, causing the water in the water chamber 4 to move back and forth and generate fluctuations. The fluctuating water acts on the rubber sheet 18, causing the rubber sheet 18 to produce a cyclic action of concave and restored under the action of the fluctuating water, causing the inside white lime to vibrate and produce a continuous vibration effect on the white lime inside the white lime chamber 3. The rubber sheet 18 causes the white lime attached to the inside of the conical bucket 2 to fall, avoiding the white lime from being compacted and arched. The problem that the white lime in the conical bucket 2 cannot fall smoothly is overcome, ensuring the smooth falling and release of the white lime.

[0044] Specifically, in this embodiment, a swing arm 14 is provided, which passes through the lower wall of the box body 1 and is rotatably connected to the lower wall of the box body 1, and the upper end of the swing arm 14 is connected to the above-mentioned toggle plate 15; the rotating shaft 9 is provided with a crank portion 16, and a connecting rod 17 is hinged between the crank portion 16 and the lower end of the swing arm 14.

[0045] When the shaft 9 rotates, the crank part 16 is driven to rotate. The crank part 16, the connecting rod 17 and the swing arm 14 form a crank rocker mechanism. In this way, the rotation of the shaft 9 can drive the swing arm 14 to swing continuously, and then drive the paddle 15 to swing back and forth continuously, similar to the movement of a paddle, so that the water in the water chamber 4 fluctuates, thereby deforming the rubber sheet 18.

[0046] In this embodiment, the crank portion 16, the connecting rod 17, the swing arm 14 and the toggle plate 15 are symmetrically arranged in two groups. A strip hole is arranged on the lower wall of the box body 1 for the swing arm 14 to pass through and swing. Figure 4 As shown, a conical sealing cover is connected to the outside of the swing arm 14, and the conical sealing cover is made of flexible corrugated rubber. The swing arm 14 passes through the small end of the conical sealing cover, and the large end of the conical sealing cover is connected to the lower wall of the box body 1 and surrounds the hinge of the swing arm 14 and the box body 1, so that the conical sealing cover can seal the hinge of the swing arm 14 to prevent water leakage at the hinge of the swing arm 14.

[0047] The ground before foundation pit construction is relatively complex. If the amount of water is large, the lime can be completely soaked to prevent it from floating around. However, the lime-water mixture is highly fluid and flows around when it falls on the ground. The line is not a regular straight line. If the amount of water is small, the lime will not be completely soaked. Some of the lime will not come into contact with water and will still float around.

[0048] In this embodiment, a slotted cone 19 is provided at the lower middle part of the front end of the frame 7 to open a wire-laying groove on the ground. The slotted cone 19 corresponds to the front and rear of the feed pipe 5. The slotted cone 19 is lower than the lower end height of the main wheel 10 in the working state. The slotted cone 19 opens a wire-laying groove on the ground. The ash-water mixture falling from the feed pipe 5 falls into the wire-laying groove and does not flow around. The wire-laying is a regular white straight line. It can meet the requirements of a large amount of water, accommodate the ash-water mixture with strong fluidity, and completely avoid the ash from floating around.

[0049] Two auxiliary wheels 20 are installed on the lower middle part of the hand push frame 8, and the two auxiliary wheels 20 are symmetrically arranged on both sides of the wire release groove and roll along the ground. The two main wheels 10 and the two auxiliary wheels 20 make the support of the frame 7 and the box body 1 more stable, and reduce the difficulty of pushing.

[0050] A guide wheel 25 moving along the wire-releasing groove is installed at the lower middle part of the hand push frame 8. There is a small gap between the lower side of the guide wheel 25 and the bottom of the wire-releasing groove. The guide wheel 25 adopts a circular frame structure of a thinner material, which occupies less space in the wire-releasing groove. The width of the guide wheel 25 is smaller than the width of the wire-releasing groove. In the working state, the guide wheel 25 corresponds to the middle of the wire-releasing groove, plays a certain guiding and indicating role, and avoids skewed wire-releasing.

[0051] The movement of personnel and mechanical equipment on the construction site can easily damage the white lines. Although in this embodiment, white marking lines are formed in the line-laying groove, they are only limited to the surface of the ground and are easily damaged by mechanical rolling. In this embodiment, a number of radial piercing rods 26 are evenly distributed on the outer circumference of the guide wheel 25. The piercing rods 26 rotate with the movement of the hand-push frame 8 and pierce holes at the bottom of the line-laying groove. The line-laying groove is filled with a ash-water mixture. The piercing rods 26 pierce a row of holes at the bottom of the line-laying groove, and the ash-water mixture enters the holes to achieve deep line laying. Even if the white marking lines on the surface are damaged, the foundation pit excavation workers can still perform accurate foundation pit excavation construction based on a row of white dots.

[0052] Since the lower sides of the slotted cone 19 and the guide wheel 25 are lower than the lower sides of the main wheel 10 and the auxiliary wheel 20, they are not easy to move in the non-working state. Therefore, in this embodiment, two guide rods 22 and an inverted U-shaped lifting frame 21 are arranged at the lower middle part of the hand push frame 8, and the auxiliary wheels 20 are installed on both sides of the lower end of the lifting frame 21. The two vertical parts of the lifting frame 21 are hollow tubular structures and are sleeved on the outer sides of the two guide rods 22 to slide vertically.

[0053] A first pin 23 is disposed transversely through the upper end of the lifting frame 21, and a first positioning hole 24 that cooperates with the first pin 23 is disposed at the upper and lower parts of the guide rod 22; Figure 8 As shown, when the first pin 23 is matched with the first positioning hole 24 at the lower part of the guide rod 22, the auxiliary wheel 20 is at a lower position and the device is in working state. Fig. 9As shown, when the first pin 23 cooperates with the first positioning hole 24 on the upper part of the guide rod 22, the auxiliary wheel 20 is positioned higher, so the height of the hand push frame 8 decreases, and the front end of the box body 1 tilts up, so that the slotted cone 19 is off the ground, so that the slotted cone 19 does not affect the walking of the device.

[0054] The hand push frame 8 has different heights when the wire-releasing device is in working state and in non-working walking state. In order to facilitate the pushing of the wire-releasing device, the rear end of the hand push frame 8 is provided with two handles of high and low layers, and the number of handles on each layer is two. When in working state, the staff can comfortably push the lower handle; when in non-working walking state, the staff can comfortably push the upper handle.

[0055] The turning frame 27 is rotatably mounted in the middle of the hand push frame 8, and the guide wheel 25 is mounted at the lower end of the turning frame 27. A fan-shaped plate 28 is provided in the middle of the hand push frame 8, and a second pin 29 is penetrated on the turning frame 27. Two second positioning holes 30 are provided on the fan-shaped plate 28. When the second pin 29 is respectively matched with the two second positioning holes 30 on the fan-shaped plate 28, the turning frame 27 is respectively in Figure 8 The vertical working state and Fig. 9 In order to facilitate the folding of the flip frame 27 and the guide wheel 25, the frame 7 and the rear end of the box body 1 are provided with grooves that cooperate with the guide wheel 25. Fig. 9 As shown, in the walking state, the slotted cone 19 and the guide wheel 25 have a gap with the ground, and the main wheel 10 and the auxiliary wheel 20 are in contact with the ground to support the movement of the device.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A construction pit auxiliary laying-out device, comprising a lime chamber (3) for storing lime and a water chamber (4) for storing water; characterized in that: The lower side of the lime chamber (3) is connected to a feed pipe (5), and the lower side of the water chamber (4) is connected to a drainage pipe (6); the end of the drainage pipe (6) is connected to the middle of the feed pipe (5) so that water can infiltrate the lime in the feed pipe (5).

2. The auxiliary laying-out device for foundation pit of construction according to claim 1 is characterized in that: It also includes a vehicle frame (7) supporting the lime chamber (3) and the water chamber (4), a rotating shaft (9) being rotatably mounted on the lower side of the vehicle frame (7), and main wheels (10) being connected at both ends of the rotating shaft (9).

3. The auxiliary laying-out device for foundation pit of construction according to claim 2, characterized in that: A ash-discharging rotating wheel (11) is provided on the inner side of the upper portion of the discharge pipe (5); the axle of the rotating wheel (11) extends outside the discharge pipe (5) and rotates along with the rotating shaft (9) via a gear set.

4. The auxiliary laying-out device for foundation pit of construction according to claim 2, characterized in that: A box body (1) is provided on the upper side of the frame (7), a conical bucket (2) is provided in the box body (1), the box body (1) above the conical bucket (2) is the lime chamber (3), the box body (1) below the conical bucket (2) is the water chamber (4), and the discharge pipe (5) passes through the lower wall of the box body (1).

5. The auxiliary laying-out device for foundation pit of construction according to claim 4, characterized in that: A reciprocating shaking plate (15) for shaking the water is arranged in the water cavity (4), and a plurality of rubber sheets (18) are inlaid on the side wall of the conical bucket (2), wherein the inner side and the outer side of the rubber sheet (18) are in contact with the lime and the water respectively.

6. The auxiliary laying-out device for foundation pit of construction according to claim 5, characterized in that: It also comprises a swing arm (14), the swing arm (14) passing through the lower wall of the box body (1) and being rotatably connected to the lower wall of the box body (1), the upper end of the swing arm (14) being connected to the toggle plate (15); the rotating shaft (9) is provided with a crank portion (16), and a connecting rod (17) is hinged between the crank portion (16) and the lower end of the swing arm (14).

7. The auxiliary laying-out device for foundation pit of construction according to claim 2, characterized in that: A slotted cone (19) for opening a wire laying groove on the ground is provided at the lower middle part of the front end of the vehicle frame (7), and the slotted cone (19) corresponds to the feed tube (5) in front and back.

8. The auxiliary laying-out device for foundation pit of construction according to claim 7, characterized in that: The rear side of the vehicle frame (7) is connected to a push frame (8), and two auxiliary wheels (20) are installed on the lower side of the middle part of the push frame (8). The two auxiliary wheels (20) are symmetrically arranged on both sides of the wire laying groove and roll along the ground.

9. The auxiliary laying-out device for foundation pit of construction according to claim 8, characterized in that: A guide wheel (25) is installed on the lower side of the middle part of the hand push frame (8) and moves along the wire release groove.

10. The auxiliary laying-out device for foundation pit of construction according to claim 9, characterized in that: A plurality of radial piercing rods (26) are evenly distributed on the outer circumference of the guide wheel (25), and the piercing rods (26) pierce holes at the bottom of the wire laying groove.

Images