Foundation pit safety protection device for road construction

Abstract

The utility model provides a road construction foundation pit safety protection device, and relates to the technical field of road foundation pit construction. The road construction foundation pit safety protection device comprises a first supporting column and a second supporting column, the first supporting column and the second supporting column are oppositely arranged, fixing plates are fixedly mounted at the bottoms of the first supporting column and the second supporting column correspondingly, and a first transverse column is arranged at the bottom between the first supporting column and the second supporting column; a first transverse column is arranged above the position between the first supporting column and the second supporting column, a second transverse column is arranged above the position between the first supporting column and the second supporting column, containing grooves are formed in the first transverse column and the second transverse column, a plurality of sets of fastening mechanisms are arranged on the inner sides of the containing grooves in the first transverse column and the second transverse column respectively, and the fastening mechanisms on the first transverse column and the second transverse column are oppositely arranged. A handrail is arranged between the two fastening mechanisms on the first transverse column and the second transverse column. The road construction foundation pit safety protection device has the advantages that the use is convenient, the handrails are convenient to replace, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of road foundation pit construction, in particular to a road construction foundation pit safety protection device. Background Art

[0002] The foundation pit is a pit dug at the foundation design location according to the base elevation and foundation plane dimensions. Before excavation, the excavation plan should be determined based on geological and hydrological data and the conditions of nearby buildings, and waterproofing and drainage work should be done.

[0003] Municipal road projects are the foundation of urban development, and strengthening their construction can improve the urban transportation network and alleviate urban traffic pressure. In the construction of municipal road projects, there are many construction processes involved, and deep foundation pit construction technology is one of them. The quality of deep foundation pit construction directly affects the construction quality of municipal road projects. Therefore, when constructing deep foundation pits for municipal road projects, it is necessary to comprehensively consider all aspects, clarify the construction technology, and take reasonable construction quality and safety control measures to ensure the construction quality of deep foundation pits for municipal road projects, which provides relatively convenient conditions for the subsequent construction links.

[0004] During the construction of the foundation pit, guardrails are needed to protect the foundation pit from damage and people's safety.

[0005] During foundation pit construction, the foundation pit guardrail is directly fixed around the foundation pit to protect the foundation pit and protect the foundation pit from damage and human safety. Existing guardrails are mostly one-piece structures. When the guardrail railings are damaged after long-term use, the guardrails are generally dismantled as a whole and replaced with new ones. The damaged guardrails cannot be replaced separately according to the damage of the guardrails. Therefore, not only the construction cost is increased, but the frequent replacement of guardrails will also delay the progress of construction.

[0006] Therefore, it is necessary to provide a new road construction foundation pit safety protection device to solve the above technical problems. Utility Model Content

[0007] The technical problem solved by the utility model is to provide a road construction foundation pit safety protection device which is easy to use, convenient for replacing railings and reduces construction costs.

[0008] In order to solve the above technical problems, the utility model provides a road construction foundation pit safety protection device, including support column 1 and support column 2, support column 1 and support column 2 are arranged oppositely, support column 1 and support column 2 are fixedly installed with fixing plates at the bottom, a cross column 1 is arranged at the bottom between support column 1 and support column 2, a cross column 2 is arranged above support column 1 and support column 2, placement grooves are opened on the cross column 1 and cross column 2, multiple groups of fastening mechanisms are respectively arranged on the inner sides of the placement grooves on the cross column 1 and cross column 2, the fastening mechanisms on the cross column 1 and cross column 2 are arranged oppositely, and a railing is arranged between the two fastening mechanisms on the cross column 1 and cross column 2;

[0009] The fastening mechanism comprises a fixed baffle plate 1 and a fixed baffle plate 2, wherein the fixed baffle plate 1 and the fixed baffle plate 2 are respectively fixedly mounted on the inner side of the placement groove on the horizontal column 2, the fixed baffle plate 1 and the fixed baffle plate 2 are arranged opposite to each other, a return spring 1 is fixedly mounted on one side of the fixed baffle plate, a return spring 2 is fixedly mounted on one side of the fixed baffle plate, a slider 1 is fixedly mounted on one side of the return spring 1, and a slider 2 is fixedly mounted on one side of the return spring 2, the slider 1 and the slider 2 are arranged in a trapezoidal shape, the inclined surfaces of the slider 1 and the slider 2 are arranged opposite to each other, and a sliding arrangement is arranged between the slider 1 and the slider 2. There is a crimping table, the bottom width of the crimping table is smaller than the top width, the crimping table is set in an isosceles trapezoidal shape, the inclined surfaces on both sides of the crimping table are respectively fitted with the inclined surfaces of slider one and slider two, a threaded rod is movably arranged on the top of the crimping table, a through hole is opened above the second cross column, the top of the threaded rod passes through the through hole and extends to the outside of the second cross column, a rotating wheel is rotatably arranged on the outside of the threaded rod, the bottom of the rotating wheel is tightly attached to the upper surface of the second cross column, a clamping cylinder is arranged at the bottom of the slider one and the slider two, the two clamping cylinders are arranged opposite to each other, and the railing is arranged between the two clamping cylinders.

[0010] Preferably, reflective marking stickers are fixedly mounted on one side of the first horizontal column and the second horizontal column, and diamond-shaped pieces are fixedly mounted on the surface of the reflective marking stickers.

[0011] Preferably, limiting grooves are provided on both sides of the placement groove on the second cross column, and limiting blocks are fixedly installed on both sides of the sliders one and two. The limiting blocks are slidably arranged on the inner side of the limiting grooves, and the outer side of the limiting blocks is in contact with the inner wall of the limiting grooves.

[0012] Preferably, a fixing seat is fixedly installed on the top of the support column 1 and the support column 2, and a warning light is fixedly installed on the inner side of the two fixing seats.

[0013] Preferably, one side of the support column 1 and the support column 2 is provided with an insertion groove, and the lower parts of the support column 1 and the support column 2 are provided with a locking hole 4, both ends of the cross column 1 are fixedly installed with a fixing block 2, the two fixing blocks 2 are respectively inserted into the inner sides of the insertion grooves, and the two fixing blocks 2 are provided with locking holes 3, and the support column 1 and the support column 2 are provided with a locking hole 1 above the two ends of the cross column 2, and the two fixing blocks 1 are provided with locking holes 2, and the two fixing blocks 1 are respectively slidably arranged on the inner sides of the two insertion grooves, the locking hole 1 and the locking hole 2 are connected to each other, the locking hole 3 and the locking hole 4 are connected to each other, and the locking hole 1 and the locking hole 2, the locking hole 3 and the locking hole 4 are provided with locking pieces on the inner sides, and the cross column 1 and the cross column 2 are respectively fixed to the support column 1 and the support column 2 through the locking pieces.

[0014] Preferably, guide grooves are respectively provided on the inclined surfaces of the slider 1 and the slider 2, guide blocks are fixedly installed on the inclined surfaces on both sides of the crimping table, the two guide blocks are respectively slidably arranged on the inner sides of the guide grooves, and the guide blocks and the guide grooves are adapted to each other.

[0015] Preferably, mounting holes are provided at the bottom of the slider 1 and the slider 2 and on the two clamping tubes, locking screws are provided on the inner sides of the mounting holes, and the two clamping tubes are fixedly mounted on the bottom of the slider 1 and the slider 2 by the locking screws.

[0016] Preferably, the locking member includes a locking column, and there are four groups of locking columns, which are respectively inserted into the inner sides of two locking holes one and two locking holes four, one end of each group of locking columns is fixedly installed with a support plate, and the outer side of each group of locking columns is provided with a locking spring, and the two ends of two groups of locking springs are respectively fixedly connected to the support plate and the outer side of support column one, and the other two ends of the locking springs are respectively fixedly connected to the support plate and the outer side of support column two.

[0017] Compared with the related art, the road construction foundation pit safety protection device provided by the utility model has the following beneficial effects:

[0018] The utility model provides a road construction foundation pit safety protection device. An operator rotates a rotary wheel upwards to make the rotary wheel release the clamping of the threaded rod, and then presses the threaded rod downwards. The threaded rod is forced to move downward, which drives the crimping platform below to move downward. When the crimping platform moves downward, it squeezes the sliders 1 and 2 on both sides respectively, so that the sliders 1 and 2 are forced to move outwards, thereby driving the two clamping tubes below to move outwards, thereby releasing the clamping of the railing. Therefore, it is convenient to replace the damaged railing, so there is no need to dismantle the guardrail as a whole. Not only does it save construction costs, but it also avoids the situation where frequent replacement of the guardrail delays the progress of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a preferred embodiment of the road construction foundation pit safety protection device provided by the utility model;

[0020] Figure 2 A schematic diagram of the explosion structure of the road construction foundation pit safety protection device provided by the utility model;

[0021] Figure 3 A schematic diagram of the partial structure of the road construction foundation pit safety protection device provided by the utility model;

[0022] Figure 4 for Figure 3 The schematic diagram of the fastening mechanism shown;

[0023] Figure 5 for Figure 4 The exploded structural diagram of the fastening mechanism shown;

[0024] Figure 6 for Figure 2 An enlarged schematic diagram of part A is shown.

[0025] Numbers in the figure: 1, support column 1; 2, fixing plate; 3, traction bar; 4, fixing hole; 5, cross column 1; 6, reflective label; 7, support column 2; 8, locking piece; 801, locking column; 802, support plate; 803, locking spring; 9, fixing seat; 10, cross column 2; 11, warning light; 12, locking hole 1; 13, fixing block 1; 14, locking hole 2; 15, fixing block 2; 16, placement slot; 1 7. Railing; 18. Locking hole three; 19. Locking hole four; 20. Threaded rod; 21. Rotating wheel; 22. Fixed baffle one; 23. Slider one; 24. Return spring one; 25. Clamping cylinder; 26. Limiting groove; 27. Slider two; 28. Crimping table; 29. ​​Guide groove; 30. Limiting block; 31. Locking screw; 32. Mounting hole; 33. Guide block; 34. Return spring two; 35. Fixed baffle two. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0027] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of the road construction foundation pit safety protection device provided by the utility model; Figure 2 A schematic diagram of the explosion structure of the road construction foundation pit safety protection device provided by the utility model; Figure 3A schematic diagram of the partial structure of the road construction foundation pit safety protection device provided by the utility model; Figure 4 for Figure 3 The schematic diagram of the fastening mechanism shown; Figure 5 for Figure 4 The exploded structural diagram of the fastening mechanism shown; Figure 6 for Figure 2The enlarged schematic diagram of part A is shown. The road construction foundation pit safety protection device includes a support column 1 and a support column 2 7. The support column 1 and the support column 2 7 are arranged opposite to each other. The tops of the support column 1 and the support column 2 7 are fixedly installed with a fixing seat 9. The inner sides of the two fixing seats 9 are fixedly installed with warning lights 11, which serve to remind pedestrians at night and improve pedestrian safety and reduce danger in dark visibility conditions. The bottoms of the support column 1 and the support column 2 7 are fixedly installed with a fixing plate 2. The two fixing plates 2 are respectively fixedly installed with traction bars 3. The fixing plates 2 are respectively fixedly installed on the bottoms of the support column 1 and the support column 2 7 through the traction bars 3. The two fixing plates 2 are provided with fixing holes 4. The support column 1 and the support column 2 7 are fixedly installed on the ground through the fixing holes 4. After the splicing of support column 1 and support column 2 7 is completed, they are fixed, and the support column 1 and support column 2 7 are fixed to the ground through the fixing hole 4. A horizontal column 15 is arranged at the bottom between the support column 1 and support column 2 7, and a horizontal column 2 10 is arranged above the support column 1 and support column 2 7. Reflective marker stickers 6 are fixedly installed on one side of the horizontal column 15 and the horizontal column 2 10. Diamond-shaped pieces are fixedly installed on the surface of the reflective marker stickers 6 to improve the completeness of the guardrail when in use and play a role in reminding and warning pedestrians. A plug-in groove is opened on one side of the support column 1 and support column 2 7, and a locking hole 4 19 is opened below the support column 1 and support column 2 7. Fixed blocks 2 15 are fixedly installed at both ends of the horizontal column 15, and the two fixed blocks 2 15 are respectively inserted into the inner sides of the plug-in grooves. The two fixing blocks 15 are each provided with a locking hole 3 18, the support column 1 and the support column 27 are each provided with a locking hole 12, the two ends of the horizontal column 10 are fixedly installed with a fixing block 13, the two fixing blocks 13 are each provided with a locking hole 2 14, the two fixing blocks 13 are respectively slidably arranged on the inner sides of the two plug-in slots, the locking hole 12 and the locking hole 2 14 are interconnected, the locking hole 3 18 and the locking hole 4 19 are interconnected, the locking hole 12 and the locking hole 2 14, the locking hole 3 18 and the locking hole 4 19 are provided with a locking member 8, the locking member 8 includes a locking column 801, and the locking column 801 has four groups, which are respectively plugged into the inner sides of the two locking holes 12 and the two locking holes 4 19, and one end of each group of locking columns 801 is fixed A support plate 802 is fixedly installed, and a locking spring 803 is arranged on the outside of each group of locking columns 801. The two ends of the two groups of locking springs 803 are fixedly connected to the support plate 802 and the outside of the support column 1, respectively. The two ends of the other two groups of locking springs 803 are fixedly connected to the support plate 802 and the outside of the support column 2 7, respectively, for facilitating the splicing of the guardrail as a whole. The horizontal column 1 5 and the horizontal column 2 10 are respectively fixed to the support column 1 1 and the support column 2 7 by the locking piece 8. Specifically, first pull the support plate 802 outward, and the support plate 802 moves backward under the force, which will pull the locking column 801 on one side to move backward, and then place the horizontal column 1 5 and the horizontal column 2 10 on the inner sides of the placement grooves 16 on the support column 1 and the support column 2 7, respectively. After placement,Align the locking hole 12 with the locking hole 2 14, the locking hole 3 18 with the locking hole 4 19, and then loosen the support plate 802, the locking spring 803 rebounds, thereby driving the locking column 801 to be inserted into the inner side of the locking hole 12, the locking hole 2 14, the locking hole 3 18 and the locking hole 4 19, thereby fixing the horizontal column 1 5 and the horizontal column 2 10. When fixing the horizontal column 1 5 and the horizontal column 2 10, the railing 17 will be fixed at the same time.

[0028] Both the horizontal column 15 and the horizontal column 2 10 are provided with a placement groove 16, and multiple sets of fastening mechanisms are respectively arranged on the inner sides of the placement grooves 16 on the horizontal column 15 and the horizontal column 2 10, and the fastening mechanisms on the horizontal column 15 and the horizontal column 2 10 are arranged oppositely, and a railing 17 is arranged between the two fastening mechanisms on the horizontal column 15 and the horizontal column 2 10; the fastening mechanism includes a fixed baffle 1 22 and a fixed baffle 2 35, and the fixed baffle 1 and the fixed baffle 2 35 are respectively fixedly installed on the inner sides of the placement grooves 16 on the horizontal column 2 10, and the fixed baffle 1 22 and the fixed baffle 2 35 are arranged oppositely, and a return spring 1 24 is fixedly installed on one side of the fixed baffle 1 22, and a return spring 2 34 is fixedly installed on one side of the fixed baffle 2 35, and a slider 1 23 is fixedly installed on one side of the return spring 14, and a return spring 2 34 is fixed on one side A slider 27 is installed, the slider 1 23 and the slider 2 27 are arranged in a trapezoidal shape, the inclined surfaces of the slider 1 23 and the slider 2 27 are arranged opposite to each other, limiting grooves 26 are provided on both sides of the placement groove 16 on the horizontal column 2 10, and limiting blocks 30 are fixedly installed on both sides of the slider 1 23 and the slider 2 27, the limiting blocks 30 are slidably arranged on the inner side of the limiting groove 26, and the outer side of the limiting blocks 30 is in contact with the inner wall of the limiting groove 26, so as to improve the stability of the slider 1 23 and the slider 2 27 when moving, and a crimping table 28 is slidably arranged between the slider 1 23 and the slider 2 27, the bottom width of the crimping table 28 is smaller than the top width, and the crimping table 28 is arranged in an isosceles trapezoidal shape, and the inclined surfaces on both sides of the crimping table 28 are respectively in contact with the inclined surfaces of the slider 1 23 and the slider 2 27, and the slider 1 23 and the slider 2 27 are inclined Guide grooves 29 are respectively provided on the surfaces, and guide blocks 33 are fixedly installed on the inclined surfaces on both sides of the crimping table 28. The two guide blocks 33 are respectively slidably arranged on the inner sides of the guide grooves 29. The guide blocks 33 and the guide grooves 29 are adapted to limit the crimping table 28 and improve the stability of the crimping table 28 when moving. A threaded rod 20 is movably arranged on the top of the crimping table 28, and a through hole is provided above the horizontal column 10. The top of the threaded rod 20 passes through the through hole and extends to the outside of the horizontal column 10. A rotating wheel 21 is rotatably arranged on the outside of the threaded rod 20, and the bottom of the rotating wheel 21 is close to the upper surface of the horizontal column 10. A clamping cylinder 25 is provided at the bottom of the slider 1 23 and the slider 27. The two clamping cylinders 25 are arranged opposite to each other. The bottoms of the slider 1 23 and the slider 27 and the two clamping cylinders 25 are provided with A mounting hole 32 is provided, and locking screws 31 are respectively provided on the inner sides of the mounting hole 32. The two clamping cylinders 25 are respectively fixedly installed on the bottom of the slider 1 23 and the slider 2 27 by the locking screws 31, so as to facilitate the replacement of the clamping cylinder 25. The railing 17 is arranged between the two clamping cylinders 25. When the railing 17 needs to be replaced, the operator rotates the rotating wheel 21 upwards to make the rotating wheel 21 loosen the clamping of the threaded rod 20, and then presses the threaded rod 20 downwards. The threaded rod 20 is forced to move downward, which will drive the crimping table 28 below to move downward. When the crimping table 28 moves downward, it will squeeze the slider 1 23 and the slider 2 27 on both sides respectively, so that the slider 1 23 and the slider 27 are forced to move outward, thereby driving the two clamping cylinders 25 below to move outwards.Thus, the clamping of the railing 17 is released, and then the damaged railing 17 is replaced. After the replacement is completed, the squeezing of the threaded rod 20 is released, and the return springs 1 24 and 2 34 on both sides rebound, which will push the sliders 1 23 and 27 on both sides to move inward together, and at the same time push the inner crimping platform 28 and the upper threaded rod 20 to move upward, thereby driving the two clamping cylinders 25 to tighten the top of the railing 17 together. After tightening, the operator turns the wheel 21 to lock the threaded rod 20 again.

[0029] The working principle of the road construction foundation pit safety protection device provided by the utility model is as follows:

[0030] When using the guardrail, first pull the support plate 802 outward, and the support plate 802 will move backward under the force, which will pull the locking column 801 on one side to move backward, and then place the cross column 15 and the cross column 2 10 on the inner sides of the placement grooves 16 on the support column 11 and the support column 2 7 respectively. After placement, align the locking hole 12 and the locking hole 2 14, the locking hole 3 18 and the locking hole 4 19 respectively, and then release the support plate 802, and the locking spring 803 rebounds, thereby driving the locking column 801 to be inserted into the inner sides of the locking hole 12 and the locking hole 2 14, the locking hole 3 18 and the locking hole 4 19, thereby fixing the cross column 15 and the cross column 2 10. When the cross column 15 and the cross column 2 10 are fixed, the railing 17 will be fixed at the same time.

[0031] After the support column 1 1 and the support column 2 7 are spliced ​​together, they are fixed by fixing the support column 1 1 and the support column 2 7 on the ground through the fixing holes 4 .

[0032] When the railing 17 needs to be replaced, the operator rotates the wheel 21 upwards to release the clamping of the threaded rod 20, and then presses the threaded rod 20 downward. The threaded rod 20 is forced to move downward, which drives the crimping table 28 below to move downward. When the crimping table 28 moves downward, it squeezes the slider 1 23 and the slider 2 27 on both sides respectively, so that the slider 1 23 and the slider 27 are forced to move outward, thereby driving the two clamping cylinders 25 below to move outward, thereby releasing the clamping of the railing 17.

[0033] Then the damaged railing 17 is replaced. After the replacement is completed, the squeezing of the threaded rod 20 is released, and the return springs 1 24 and 2 34 on both sides rebound, which will push the sliders 1 23 and 27 on both sides to move inward together, and at the same time push the inner crimping table 28 and the upper threaded rod 20 to move upward, thereby driving the two clamping cylinders 25 to tighten the top of the railing 17 together. After tightening, the operator turns the wheel 21 to lock the threaded rod 20 again.

[0034] Compared with the related art, the road construction foundation pit safety protection device provided by the utility model has the following beneficial effects:

[0035] The utility model provides a road construction foundation pit safety protection device. The operator rotates the rotary wheel 21 upwards to make the rotary wheel 21 loosen the clamping of the threaded rod 20, and then presses the threaded rod 20 downwards. The threaded rod 20 is forced to move downward, which will drive the lower crimping platform 28 to move downward. When the crimping platform 28 moves downward, it will squeeze the slider 1 23 and the slider 2 27 on both sides respectively, so that the slider 1 23 and the slider 27 are forced to move outward, thereby driving the two clamping cylinders 25 below to move outward, thereby loosening the clamping of the railing 17. Therefore, it is convenient to replace the damaged railing 17, so there is no need to dismantle the guardrail as a whole, which not only saves construction costs, but also avoids the situation where frequent replacement of the guardrail delays the progress of construction.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A road construction foundation pit safety protection device, comprising a support column 1 and a support column 2, wherein the support column 1 and the support column 2 are arranged opposite to each other, and a fixing plate is fixedly installed at the bottom of the support column 1 and the support column 2, characterized in that: A horizontal column 1 is arranged at the bottom between the support column 1 and the support column 2, a horizontal column 2 is arranged above the support column 1 and the support column 2, a placement groove is provided on the horizontal column 1 and the horizontal column 2, and a plurality of sets of fastening mechanisms are arranged inside the placement grooves on the horizontal column 1 and the horizontal column 2, respectively, the fastening mechanisms on the horizontal column 1 and the horizontal column 2 are arranged oppositely, and a railing is arranged between the two fastening mechanisms on the horizontal column 1 and the horizontal column 2; The fastening mechanism comprises a fixed baffle plate 1 and a fixed baffle plate 2, wherein the fixed baffle plate 1 and the fixed baffle plate 2 are respectively fixedly mounted on the inner side of the placement groove on the horizontal column 2, the fixed baffle plate 1 and the fixed baffle plate 2 are arranged opposite to each other, a return spring 1 is fixedly mounted on one side of the fixed baffle plate, a return spring 2 is fixedly mounted on one side of the fixed baffle plate, a slider 1 is fixedly mounted on one side of the return spring 1, and a slider 2 is fixedly mounted on one side of the return spring 2, the slider 1 and the slider 2 are arranged in a trapezoidal shape, the inclined surfaces of the slider 1 and the slider 2 are arranged opposite to each other, and a sliding arrangement is arranged between the slider 1 and the slider 2. There is a crimping table, the bottom width of the crimping table is smaller than the top width, the crimping table is set in an isosceles trapezoidal shape, the inclined surfaces on both sides of the crimping table are respectively fitted with the inclined surfaces of slider one and slider two, a threaded rod is movably arranged on the top of the crimping table, a through hole is opened above the second cross column, the top of the threaded rod passes through the through hole and extends to the outside of the second cross column, a rotating wheel is rotatably arranged on the outside of the threaded rod, the bottom of the rotating wheel is tightly attached to the upper surface of the second cross column, a clamping cylinder is arranged at the bottom of the slider one and the slider two, the two clamping cylinders are arranged opposite to each other, and the railing is arranged between the two clamping cylinders.

2. The road construction foundation pit safety protection device according to claim 1 is characterized in that: Reflective marking stickers are fixedly installed on one side of the first horizontal column and the second horizontal column, and diamond-shaped pieces are fixedly installed on the surface of the reflective marking stickers.

3. The road construction foundation pit safety protection device according to claim 1 is characterized in that: Limiting grooves are provided on both sides of the placement groove on the second cross column, and limiting blocks are fixedly installed on both sides of the slide block one and the slide block two. The limiting blocks are slidably arranged on the inner side of the limiting grooves, and the outer side of the limiting block is in contact with the inner wall of the limiting groove.

4. The road construction foundation pit safety protection device according to claim 1 is characterized in that: A fixing seat is fixedly installed on the top of the support column 1 and the support column 2, and a warning light is fixedly installed on the inner side of the two fixing seats.

5. The road construction foundation pit safety protection device according to claim 1 is characterized in that: One side of the support column one and the support column two is provided with a plug-in groove, and the support column one and the support column two are provided with a locking hole four below, and the two ends of the cross column one are fixedly installed with a fixing block two, and the two fixing blocks two are respectively inserted into the inner sides of the plug-in grooves, and the two fixing blocks two are provided with locking holes three, and the support column one and the support column two are provided with a locking hole one above, and the two ends of the cross column two are fixedly installed with a fixing block one, and the two fixing blocks one are provided with locking holes two, and the two fixing blocks one are respectively slidably arranged on the inner sides of the two plug-in grooves, and the locking hole one and the locking hole two are connected with each other, and the locking hole three and the locking hole four are connected with each other, and the locking hole one and the locking hole two, the locking hole three and the locking hole four are provided with locking pieces on the inner sides, and the cross column one and the cross column two are respectively fixed to the support column one and the support column two through locking pieces.

6. The road construction foundation pit safety protection device according to claim 1 is characterized in that: The inclined surfaces of the slider 1 and the slider 2 are respectively provided with guide grooves, and the inclined surfaces on both sides of the crimping table are fixedly installed with guide blocks, and the two guide blocks are respectively slidably arranged inside the guide grooves, and the guide blocks and the guide grooves are adapted to each other.

7. The road construction foundation pit safety protection device according to claim 1 is characterized in that: The bottom of the slider 1 and the slider 2 and the two clamping tubes are provided with mounting holes, the inner sides of the mounting holes are respectively provided with locking screws, and the two clamping tubes are respectively fixedly mounted on the bottom of the slider 1 and the slider 2 by the locking screws.

8. The road construction foundation pit safety protection device according to claim 5 is characterized in that: The locking member includes a locking column, and there are four groups of locking columns, which are respectively inserted into the inner sides of two locking holes one and two locking holes four. A support plate is fixedly installed at one end of each group of locking columns, and a locking spring is arranged on the outer side of each group of locking columns. The two ends of the two groups of locking springs are respectively fixedly connected to the support plate and the outer side of support column one, and the two ends of the other two groups of locking springs are respectively fixedly connected to the support plate and the outer side of support column two.

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