A protective fence for the slope top of a deep foundation pit

Abstract

The application provides a protective fence for a deep foundation pit slope top, and relates to the field of foundation pit protective fences. The protective fence comprises a protective net and a pair of supporting rods, the protective net is arranged between the two supporting rods, the opposite sides of the two supporting rods are fixedly provided with receiving plates, the receiving plates are provided with receiving grooves, the side walls of the protective net are provided with receiving rods, the receiving rods are inserted into the receiving grooves when the protective net is in a protection state, and a stabilizing mechanism is arranged between the receiving rods and the corresponding supporting rods to improve the stability of the supporting rods, so that the supporting rods are not easy to fall over when the protective net is impacted. The application has the effect of improving protection on vehicles and constructors.

Description

TECHNICAL FIELD

[0001] The application relates to the field of foundation pit guardrails, in particular to a deep foundation pit slope top guardrail. BACKGROUND

[0002] A foundation pit is a soil pit excavated at a foundation design position according to a foundation elevation and a foundation plane size; and a foundation pit guardrail is also called a foundation pit edge guardrail, an edge fence, a foundation pit fence or a warning fence, and is mainly used for protection at an edge of a pit on a construction site.

[0003] At present, a foundation pit protection net is disclosed in Chinese Patent No. CN215369100U, which comprises support columns one and two, the support columns one and two are jointly connected with a protection net body, the bottom of the support columns one and two is fixedly provided with a support rod, the top of the support columns one and two is provided with an opening, the support columns one and two are internally inserted with an elongated rod, the top of each elongated rod is connected with a pull rod, the support columns one and two are symmetrically provided with a plurality of limiting through holes, each elongated rod is provided with a limiting device for clamping itself in the limiting through hole, the side of the two elongated rods close to each other is provided with a plurality of grooves, each elongated rod is connected with a first connecting rod and a second connecting rod in each groove, each first connecting rod is connected with a clamping block, and each second connecting rod is provided with a clamping groove, the clamping block can be clamped in the clamping groove of the second connecting rod, and the application has the effects of conveniently adjusting the height of the protection net by the user and ensuring the safety of vehicles and constructors.

[0004] However, although the above-mentioned protection net has the effects of conveniently adjusting the height of the protection net by the user and ensuring the safety of vehicles and constructors, the mode of only increasing the contact area of the support columns one and two with the ground by the support rod to make the support columns one and two not easy to fall is far from being stable on the ground, and once a vehicle or a constructor hits the protection net, the protection net will be instantly turned over, thereby having poor protection effect on the vehicle and the constructor. SUMMARY

[0005] In order to improve the problem that once a vehicle or a constructor hits the protection net, the protection net will be instantly turned over, thereby having poor protection effect on the vehicle and the constructor, the application provides a deep foundation pit slope top guardrail.

[0006] The application provides a deep foundation pit slope top guardrail, which adopts the following technical scheme:

[0007] The utility model provides a kind of protective fence for deep foundation pit slope top, it include: protective screen and a pair of support rod, the protective screen is arranged between two the support rod, and the opposite side of two the support rod is fixedly provided with bearing plate, bearing groove is opened in the bearing plate, the sidewall of the protective screen is provided with bearing rod, when the protective screen is in the state of protection, bearing rod is inserted into bearing groove, bearing rod and corresponding the support rod between it is provided with stabilizing mechanism, to improve the stability of the support rod, so that when the protective screen is impacted, the support rod is not easy to turn over.

[0008] By adopting the above technical scheme, the stabilizing mechanism can improve the stability of the support rod fixed to the ground, so that when the protective screen is impacted, the support rod is not easy to turn over.

[0009] Optionally, the support rod is internally provided with a cavity, the bottom wall of the support rod is provided with a clearance hole in communication with the cavity, and the stabilizing mechanism comprises a stabilizing assembly, the stabilizing assembly comprises a stabilizing rod and a tapered head, one end of the stabilizing rod is fixed with the tapered head and inserted into the ground, and the other end is threadedly connected with the clearance hole and extends into the cavity.

[0010] By adopting the above technical scheme, the stabilizing rod can be inserted into the ground until the stabilizing rod is completely inserted into the ground, thereby completing the fixation of the support rod, improving the stability of the support rod fixed to the ground, so that the support rod is not easy to turn over with the protective screen, thereby enhancing the protection effect on vehicles and constructors.

[0011] Optionally, the stabilizing mechanism further comprises a transmission assembly, the transmission assembly comprises a rotating cylinder, a rotating rod and a limiting block, the rotating cylinder is rotatably installed in the cavity, the inner wall of the rotating cylinder is provided with a limiting slot, the limiting block is slidably connected in the limiting slot, one end of the rotating rod is fixed with the stabilizing rod, and the other end is slidably arranged in the rotating cylinder and fixed with the limiting block.

[0012] By adopting the above technical scheme, the limiting block can ensure that the rotating rod can follow the rotation of the rotating cylinder when the rotating cylinder rotates.

[0013] Optionally, the support rod is provided with a placement hole in communication with the cavity, and the stabilizing mechanism further comprises a driving assembly, the driving assembly comprises a first rod, a first gear, a second rod, a transmission belt and second and third gears meshing with each other, the first rod is rotatably installed in the placement hole and coaxially fixed with the first gear, the bearing rod is provided with a tooth groove, and the first gear is meshed in the tooth groove, the second rod is rotatably installed in the cavity and coaxially fixed with the second gear, the third gear is coaxially fixed with the rotating cylinder, and the first rod and the second rod are driven by the transmission belt.

[0014] By adopting the technical scheme, the first gear is engaged with the tooth groove on the receiving rod to drive the rotation of the first gear, the rotation of the first gear drives the rotation of the first rod, the transmission belt, the second rod, the second gear and the third gear in turn, the rotation of the third gear drives the rotation of the rotating drum and the rotating rod, and the rotating rod drives the rotation of the stabilizing rod, so that the stabilizing rod is inserted into the ground.

[0015] Optionally, the stabilizing assembly further comprises a fixing pipe, the fixing pipe is embedded in the ground by pouring concrete, the stabilizing rod passes through the fixing pipe, and the stabilizing rod is threadedly connected with the fixing pipe.

[0016] By adopting the technical scheme, the stabilizing rod is threadedly connected with the fixing pipe, so that the stability of the stabilizing rod inserted into the ground is further improved, and the stability of the support rod is further improved.

[0017] Optionally, a positioning hole is formed in the top wall of the fixing pipe, a containing hole is formed in the bottom wall of the support rod, a positioning rod is arranged in the containing hole, a pushing spring is arranged between the positioning rod and the hole bottom of the containing hole, and when the protective net is in the protection state, one end of the positioning rod away from the pushing spring is inserted into the positioning hole.

[0018] By adopting the technical scheme, on the one hand, when the protective net or the support rod is impacted, the positioning rod can improve the stability of the support rod; on the other hand, the positioning rod can prevent the support rod from being deviated during installation of the protective net.

[0019] Optionally, a telescopic mechanism is arranged between the receiving rod and the protective net, the telescopic mechanism comprises a plurality of telescopic assemblies, each telescopic assembly comprises a connecting cylinder and a connecting rod, the connecting cylinder is rotatably installed on the receiving rod, one end of the connecting rod is fixedly connected with the protective net, and the other end of the connecting rod is threadedly connected in the connecting cylinder.

[0020] By adopting the technical scheme, the protective net can be limited from rotating, and then the connecting cylinder is rotated, so that the connecting rod is telescopically arranged in the connecting cylinder until the receiving rod can be better inserted into the receiving groove.

[0021] Optionally, an accommodating cavity is arranged in the receiving rod, the telescopic mechanism further comprises an adjusting assembly, the adjusting assembly comprises an adjusting rod and a driving gear and a driven gear which are engaged with each other, the adjusting rod is rotatably installed in the accommodating cavity and penetrates the receiving rod at the top end, the driving gear is coaxially fixed with the adjusting rod, one end of the connecting cylinder away from the connecting rod extends into the accommodating cavity, and the driven gear is coaxially fixed with the connecting cylinder.

[0022] By adopting the technical scheme, the adjusting rod can be rotated, and the rotation of the adjusting rod will sequentially drive the rotation of the driving gear, the driven gear and the connecting cylinder, so that the effect of synchronously rotating the connecting cylinder can be achieved, the adjusting precision can be improved, and the connecting cylinder does not need to be rotated one by one, so that time and effort are saved, and the adjusting efficiency is improved.

[0023] Optionally, a top end of the adjusting rod is fixedly provided with a crank handle.

[0024] By adopting the technical scheme, the crank handle can more conveniently drive the adjusting rod to rotate.

[0025] Optionally, one side of the protective net is fixedly provided with a buffer pad, and the buffer pad is provided with fluorescent paper on a side away from the protective net.

[0026] By adopting the technical scheme, if a vehicle or a constructor collides with the protective net, the buffer pad will be extruded, so that the effect of buffering is achieved; the fluorescent paper can emit light at night, so that the vehicle and the constructor can be warned at night.

[0027] In summary, the present application has at least one of the following beneficial effects:

[0028] 1. The stabilizing mechanism can improve the stability of the supporting rod fixed to the ground, so that the supporting rod is not easy to fall over when the protective net is impacted.

[0029] 2. The crank handle can more conveniently drive the adjusting rod to rotate.

[0030] 3. The fluorescent paper can emit light at night, so that the vehicle and the constructor can be warned at night. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic perspective view of a protective fence for a deep foundation pit slope top according to an embodiment of the present application;

[0032] Figure 2 is a schematic side view of Figure 1 ;

[0033] Figure 3 is a schematic sectional view taken along the section line A-A in Figure 2 ;

[0034] Figure 4 is a schematic partial enlarged view of the B part in Figure 3 ;

[0035] Figure 5 is a schematic sectional view taken along the section line C-C in Figure 3 ;

[0036] Figure 6 isFigure 3 a schematic partial enlarged view of section D;

[0037] Figure 7 is Figure 3 a schematic partial enlarged view of section E.

[0038] In the figure: 1, protective net; 11, frame body; 12, net body; 13, buffer pad; 14, fluorescent paper; 15, receiving rod; 151, accommodating cavity; 152, tooth groove; 2, supporting rod; 21, cavity; 22, accommodation hole; 23, placing hole; 24, accommodating hole; 241, positioning rod; 242, push spring; 3, receiving plate; 31, receiving groove; 4, stabilizing assembly; 41, stabilizing rod; 42, tapered head; 43, fixing tube; 431, positioning hole; 5, transmission assembly; 51, rotating drum; 511, limiting groove; 52, rotating rod; 53, limiting block; 6, driving assembly; 61, first rod; 62, first gear; 63, second rod; 64, transmission belt; 65, second gear; 66, third gear; 7, telescopic assembly; 71, connecting cylinder; 72, connecting rod; 8, adjusting assembly; 81, adjusting rod; 811, crank; 82, driving gear; 83, driven gear. DETAILED DESCRIPTION

[0039] Figure 1 is a schematic perspective view of a protective fence for the top of a deep foundation pit according to an embodiment of the present application. Referring to Figure 1 A protective fence for the top of a deep foundation pit can generally include a protective net 1 and a pair of supporting rods 2. In the embodiment of the present application, the protective net 1 is composed of a frame body 11 and a net body 12, and the net body 12 is fixed in the frame body 11.

[0040] Referring to Figure 1 The opposite sides of the two supporting rods 2 are each fixedly provided with a receiving plate 3, and the top wall of the receiving plate 3 is provided with a receiving groove 31 in the vertical direction downward (the bottom of the receiving groove 31 does not penetrate the receiving plate 3). The frame body 11 is provided with a receiving rod 15 at each end in the length direction, and when the protective net 1 is in a protective state, the receiving rod 15 is inserted into the corresponding receiving groove 31. When a foundation pit is excavated, the supporting rod 2 can be fixed around the foundation pit, and then the receiving rod 15 is inserted into the receiving groove 31 from the top opening of the receiving groove 31 until the receiving rod 15 is completely inserted into the receiving groove 31, thereby completing the installation of the protective net 1 to achieve the effect of protecting vehicles and constructors; when the protective net 1 needs to be disassembled, the receiving rod 15 is pulled out of the receiving groove 31, thereby improving the convenience of installation and disassembly of the protective net 1.

[0041] Referring to Figure 1In addition, the side wall of the frame body 11 is fixedly provided with a buffer pad 13. When the vehicle or the worker hits the protective net 1, the buffer pad 13 will be extruded, thereby achieving the buffering effect. The side of the buffer pad 13 away from the frame body 11 is fixedly provided with a fluorescent paper 14. The fluorescent paper 14 can emit light at night, thereby warning the vehicle and the worker at night.

[0042] Figure 2 is a schematic side view of Figure 1 ; Figure 3 is a schematic sectional view taken along the section line A-A in Figure 2 ; Figure 4 is a schematic partial enlarged view of the B part in Figure 3 . Referring to Figure 2 , Figure 3 and Figure 4 , the telescopic mechanism is arranged between the receiving rod 15 and the frame body 11, and the telescopic mechanism comprises an adjusting assembly 8 and a plurality of telescopic assemblies 7. In the embodiment, three groups of telescopic assemblies 7 are arranged, and the three groups of telescopic assemblies 7 are uniformly arranged along the vertical direction.

[0043] Referring to Figure 4 , the telescopic assembly 7 comprises a connecting barrel 71 and a connecting rod 72. The connecting barrel 71 is rotationally installed at the side of the receiving rod 15 close to the frame body 11 and is horizontally arranged. One end of the connecting rod 72 is fixedly connected to the side of the frame body 11 close to the receiving rod 15, and the other end is threadedly connected to the connecting barrel 71. Since the distance between the two support rods 2 cannot be accurately ensured to be consistent with the total length of the two receiving rods 15 and the frame body 11 when the two support rods 2 are fixed, the frame body 11 can be fixed (only the case of limiting the rotation of the frame body 11 is considered), and then the connecting barrel 71 is rotated, so that the connecting rod 72 will be telescoped in the connecting barrel 71 until the total length is consistent with the distance between the two support rods 2, so that the receiving rod 15 can be better inserted into the receiving groove 31. In addition, the connecting barrel 71 and the connecting rod 72 can be length-adjusted on one hand, and on the other hand, after the adjustment is completed, the connecting barrel 71 and the connecting rod 72 can serve as a handrail, thereby also achieving the effect of protection.

[0044] Referring to Figure 4 , the inside of the receiving rod 15 is provided with a receiving cavity 151, and the adjusting assembly 8 comprises an adjusting rod 81 and a driving gear 82 and a driven gear 83 which are in mesh with each other. The adjusting rod 81 is rotationally installed in the receiving cavity 151 and is vertically arranged. The top end of the adjusting rod 81 penetrates through the receiving rod 15 and extends above the receiving rod 15. One end of the adjusting rod 81 in the receiving cavity 151 is fixedly arranged on the same axis as the driving gear 82.

[0045] Referring to Figure 4The connecting cylinder 71 extends into the accommodating cavity 151 from the end of the connecting rod 72, and the end of the connecting cylinder 71 in the accommodating cavity 151 is coaxially fixed with the driven gear 83. When it is needed to rotate the connecting cylinder 71, the adjusting rod 81 can be rotated, and the rotation of the adjusting rod 81 will sequentially drive the rotation of the driving gear 82, the driven gear 83 and the connecting cylinder 71, so that the effect of synchronously rotating the connecting cylinder 71 can be achieved, which can not only improve the adjusting accuracy, but also does not need to rotate the connecting cylinder 71 one by one, thereby saving time and effort, so as to improve the adjusting efficiency.

[0046] Referring to Figure 4 In addition, the end of the adjusting rod 81 above the receiving rod 15 is fixedly provided with a crank 811, and the crank 811 is perpendicular to the adjusting rod 81. The crank 811 can more conveniently drive the adjusting rod 81 to rotate.

[0047] Figure 5 is a schematic sectional view taken along the section line C-C in Figure 3 ; Figure 6 is a schematic partial enlarged view of part D in Figure 3 . Referring to Figure 3 , Figure 5 and Figure 6 , the receiving rod 15 and the corresponding support rod 2 are provided with a stabilizing mechanism, which comprises a stabilizing assembly 4, a transmission assembly 5 and a driving assembly 6.

[0048] Referring to Figure 3 and Figure 5 , the inside of the support rod 2 is provided with a cavity 21, and the side of the support rod 2 close to the receiving plate 3 is provided with a placing hole 23 which is in communication with the receiving groove 31 and the cavity 21. The driving assembly 6 comprises a first rod 61, a first gear 62, a second rod 63, a transmission belt 64 and second and third gears 65 and 66 which are in meshing engagement. The first rod 61 is rotatably installed in the placing hole 23 and is horizontally arranged, and the first rod 61 is coaxially fixed with the first gear 62. The side of the receiving rod 15 away from the frame 11 is provided with a tooth groove 152 in the vertical direction, and the first gear 62 is engaged in the tooth groove 152.

[0049] The second rod 63 is rotatably installed in the cavity 21 and is horizontally arranged, and the second gear 65 is coaxially fixed with the second rod 63. The third gear 66 is connected with the transmission assembly 5, and the second and third gears 65 and 66 are bevel gears. The first rod 61 and the second rod 63 are in transmission through the transmission belt 64.

[0050] Referring to Figure 6, the transmission assembly 5 comprises: a rotating drum 51, a rotating rod 52 and a limiting block 53, the rotating drum 51 is rotatably installed on the inner top wall of the cavity 21 and vertically arranged, and the third gear 66 is coaxially fixed with the rotating drum 51. The inner wall of the rotating drum 51 is provided with a limiting groove 511 along the axial direction, and the limiting block 53 is slidingly connected in the limiting groove 511 and slides in the vertical direction.

[0051] Referring to Figure 6 , one end of the rotating rod 52 is connected with the stabilizing assembly 4, and the other end is telescoped in the rotating drum 51 and fixed with the limiting block 53, so that the rotating rod 52 can follow the rotation of the rotating drum 51 when the rotating drum 51 rotates.

[0052] Referring to Figure 3 , the bottom wall of the support rod 2 is provided with a clearance hole 22 communicating with the cavity 21, and the stabilizing assembly 4 comprises: a stabilizing rod 41 and a tapered head 42, one end of the stabilizing rod 41 is fixed with the tapered head 42 and inserted into the ground, and the other end is threadedly connected with the clearance hole 22 and extends into the cavity 21 and is fixedly connected with the end of the rotating rod 52 away from the rotating drum 51. The tapered head 42 can facilitate the insertion of the stabilizing rod 41 into the ground.

[0053] During the insertion of the receiving rod 15 into the receiving groove 31, the first gear 62 is engaged with the tooth groove 152 on the receiving rod 15 to drive the rotation of the first gear 62, and the rotation of the first gear 62 will in turn drive the rotation of the first rod 61, the transmission belt 64, the second rod 63, the second gear 65 and the third gear 66; the rotation of the third gear 66 will drive the rotating drum 51 to rotate the rotating rod 52, and the rotation of the rotating rod 52 will drive the stabilizing rod 41 to rotate, so that the stabilizing rod 41 will be inserted into the ground, and in this process, the rotating rod 52 also extends outwards from the rotating drum 51 to facilitate the insertion of the stabilizing rod 41 into the ground; until the stabilizing rod 41 is completely inserted into the ground, thereby completing the fixation of the support rod 2, so as to improve the stability of the support rod 2 when fixed on the ground, so that the support rod 2 is not easy to drive the protective net 1 to be turned over, thereby enhancing the protection effect on vehicles and constructors.

[0054] And the fixation of the support rod 2 can be completed during the installation of the protective net 1, without the need for separate fixation of the support rod 2 through screws after the protective net 1 is installed, thereby greatly improving the installation efficiency of the protective net 1 and the support rod 2.

[0055] Referring to Figure 3Specifically, the stabilizing assembly 4 further comprises a fixed tube 43, which is embedded in the ground by concrete pouring and whose top is flush with the ground. The stabilizing rod 41 is inserted into the fixed tube 43 at an end away from the rotating rod 52, and the stabilizing rod 41 is screwed with the fixed tube 43, and the screwing direction between the stabilizing rod 41 and the inner wall of the let-in hole 22 is consistent with the screwing direction between the stabilizing rod 41 and the fixed tube 43. First, the screwing of the stabilizing rod 41 with the fixed tube 43 can further improve the stability of the insertion of the stabilizing rod 41 into the ground, thereby further improving the stability of the fixing of the support rod 2; second, the fixed tube 43 is embedded in the ground by concrete pouring, which can improve the stability of the embedding of the fixed tube 43 in the ground, i.e., indirectly improve the stability of the insertion of the stabilizing rod 41 into the ground.

[0056] Figure 7 is Figure 3 a schematic partial enlarged view of the E portion in FIG. 6. Referring to Figure 7 In addition, the top wall of the fixed tube 43 is provided with a plurality of positioning holes 431 along the circumference thereof, and the bottom wall of the support rod 2 is provided with a plurality of accommodating holes 24 along the circumference of the let-in hole 22, and the accommodating holes 24 and the positioning holes 431 are coaxial and one-to-one corresponding. A positioning rod 241 is arranged in the accommodating hole 24, and a pushing spring 242 is fixedly arranged between the top wall of the positioning rod 241 and the hole bottom of the accommodating hole 24, and the pushing spring 242 has a pushing force on the positioning rod 241, so that when the protective net 1 is in the protection state, the end of the positioning rod 241 away from the pushing spring 242 is pushed to be inserted into the positioning hole 431. On the one hand, the positioning rod 241 can improve the stability of the support rod 2 when the protective net 1 or the support rod 2 is impacted; on the other hand, the positioning rod 241 can prevent the support rod 2 from being easily deviated during the installation of the protective net 1.

[0057] The working principle of the deep foundation pit slope top protective fence of the present application in use is as follows: in the process of inserting the receiving rod 15 into the receiving groove 31, the first gear 62 is engaged with the tooth groove 152 on the receiving rod 15 to drive the rotation of the first gear 62, and the rotation of the first gear 62 will in turn drive the rotation of the first rod 61, the transmission belt 64, the second rod 63, the second gear 65 and the third gear 66; the rotation of the third gear 66 will drive the rotating cylinder 51 to drive the rotating rod 52 to rotate, and the rotating rod 52 will drive the stabilizing rod 41 to rotate, so that the stabilizing rod 41 will be inserted into the ground, and in this process, the rotating rod 52 also extends outwards from the rotating cylinder 51 to facilitate the insertion of the stabilizing rod 41 into the ground; until the stabilizing rod 41 is completely inserted into the ground, thereby completing the fixing of the support rod 2, to improve the stability of the support rod 2 when it is fixed to the ground, so that the support rod 2 is not easy to drive the protective net 1 to be turned over together, thereby enhancing the effect of protecting vehicles and constructors.

[0058] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A protective fence for a slope top of a deep foundation pit, characterized by, Include: The protective net (1) and a pair of support rods (2) are arranged between the two support rods (2), and the opposite sides of the two support rods (2) are fixedly provided with receiving plates (3), the receiving plates (3) are provided with receiving grooves (31), the side wall of the protective net (1) is provided with a receiving rod (15), when the protective net (1) is in the protection state, the receiving rod (15) is inserted into the receiving groove (31), the receiving rod (15) and the corresponding support rod (2) are provided with a stabilizing mechanism, so as to improve the stability of the support rod (2), so that the support rod (2) is not easy to turn over when the protective net (1) is impacted; The support rod (2) is provided with a cavity (21), and the bottom wall of the support rod (2) is provided with a clearance hole (22) communicated with the cavity (21), the stabilizing mechanism comprises a stabilizing assembly (4), the stabilizing assembly (4) comprises a stabilizing rod (41) and a taper head (42), one end of the stabilizing rod (41) is fixed with the taper head (42) and is inserted into the ground, the other end is threadedly connected with the clearance hole (22) and extends into the cavity (21); The stabilizing mechanism further comprises a transmission assembly (5), the transmission assembly (5) comprises a rotating drum (51), a rotating rod (52) and a limiting block (53), the rotating drum (51) is rotatably installed in the cavity (21), and the inner wall of the rotating drum (51) is provided with a limiting groove (511), the limiting block (53) is slidably connected in the limiting groove (511), one end of the rotating rod (52) is fixed with the stabilizing rod (41), and the other end is slidably connected in the rotating drum (51) and is fixed with the limiting block (53); The support rod (2) is provided with a placing hole (23) communicated with the cavity (21), the stabilizing mechanism further comprises a driving assembly (6), the driving assembly (6) comprises a first rod (61), a first gear (62), a second rod (63), a transmission belt (64) and a second gear (65) and a third gear (66) meshing with each other, the first rod (61) is rotatably installed in the placing hole (23) and is coaxially fixed with the first gear (62), the receiving rod (15) is provided with a gear slot (152), and the first gear (62) is meshed in the gear slot (152), the second rod (63) is rotatably installed in the cavity (21) and is coaxially fixed with the second gear (65), the third gear (66) is coaxially fixed with the rotating drum (51), and the first rod (61) and the second rod (63) are driven by the transmission belt (64).

2. The protective fence for the slope top of deep foundation pit according to claim 1, characterized in that, The stabilizing assembly (4) further comprises a fixed pipe (43), the fixed pipe (43) is embedded in the ground by pouring concrete, the stabilizing rod (41) penetrates the fixed pipe (43), and the stabilizing rod (41) is threadedly connected with the fixed pipe (43).

3. The protective fence for the slope top of deep foundation pit according to claim 2, characterized in that, The top wall of the fixed pipe (43) is provided with a positioning hole (431), the bottom wall of the support rod (2) is provided with an accommodating hole (24), a positioning rod (241) is arranged in the accommodating hole (24), a pushing spring (242) is arranged between the positioning rod (241) and the hole bottom of the accommodating hole (24), and when the protective net (1) is in a protection state, one end of the positioning rod (241) away from the pushing spring (242) is inserted into the positioning hole (431).

4. The protective fence for the slope top of deep foundation pit according to claim 1, characterized in that, A telescopic mechanism is arranged between the receiving rod (15) and the protective net (1), the telescopic mechanism comprises a plurality of telescopic assemblies (7), each telescopic assembly (7) comprises a connecting barrel (71) and a connecting rod (72), the connecting barrel (71) is rotatably installed on the receiving rod (15), one end of the connecting rod (72) is fixedly connected with the protective net (1), and the other end is screwed into the connecting barrel (71).

5. The protective fence for the slope top of deep foundation pit according to claim 4, characterized in that, The receiving rod (15) is internally provided with an accommodating cavity (151), and the telescopic mechanism further comprises an adjusting assembly (8), the adjusting assembly (8) comprises an adjusting rod (81) and a driving gear (82) and a driven gear (83) which are in mesh with each other, the adjusting rod (81) is rotatably installed in the accommodating cavity (151) and penetrates through the receiving rod (15) at the top end, the driving gear (82) is coaxially fixed with the adjusting rod (81), one end of the connecting barrel (71) away from the connecting rod (72) extends into the accommodating cavity (151), and the driven gear (83) is coaxially fixed with the connecting barrel (71).

6. The protective fence for the slope top of deep foundation pit according to claim 5, characterized in that, A crank handle (811) is fixedly arranged at the top end of the adjusting rod (81).

7. The protective fence for the slope top of deep foundation pit according to claim 1, characterized in that, A buffer pad (13) is fixedly arranged on one side of the protective net (1), and a fluorescent paper (14) is arranged on the side of the buffer pad (13) away from the protective net (1).

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