Safety frame for construction in underground limited space

Abstract

The utility model relates to an underground limited space construction safety frame, which belongs to the technical field of underground construction safety equipment and comprises a fixing plate, supporting rods are hinged to three sides of the fixing plate through hinge seats, and adjusting mechanisms convenient for adapting to different well diameters are arranged at the bottoms of inner cavities of the supporting rods. An air cylinder is fixed to the center of the lower surface of the fixing plate, and the lower surface of a piston rod of the air cylinder is provided with a take-up and pay-off mechanism used for controlling take-up and pay-off of a cable. And the adjusting mechanism comprises a rotating sleeve rod, a rotating plate, a threaded rod, a supporting leg, two threaded insertion rods and an anti-skid plate. According to the underground limited space construction safety frame, a stable and safe construction operation platform is provided through the arranged safety frame, a fixing plate and a supporting rod are connected in a hinged mode through a hinge base so that a user can carry and store the safety frame conveniently, the height of the supporting rod can be adjusted, and adjustable supporting legs are arranged; therefore, different well diameters and ground conditions can be adapted.

Description

Technical Field

[0001] The utility model relates to the technical field of underground construction safety equipment, in particular to a safety frame for underground confined space construction. Background Technique

[0002] Underground engineering construction is a very complex and dangerous project, which requires strict preparation work, processes, safety measures, environmental protection measures and monitoring, etc. to ensure the smooth progress and safety of the project.

[0003] Through retrieval, it is found that the Chinese patent publication number: CN218114793U discloses an electric underground lifting device, including a mounting frame, on which two X-axis I-beam crossbeams are arranged. On each of the two X-axis I-beam crossbeams, an X-axis I-beam traveling trolley is installed. At the bottom of the two X-axis I-beam traveling trolleys, a Y-axis I-beam crossbeam is commonly connected. On the Y-axis I-beam crossbeam, a Y-axis I-beam traveling trolley is installed. At the bottom of the Y-axis I-beam traveling trolley, there is a mounting plate. In the middle position of the mounting plate, an electric hoist is installed. The electric hoist includes a hook mounting seat, to which a horizontal fixing plate is connected. On the fixing plate, two lifting lugs are arranged. On both sides of the electric hoist, two wire releasing mechanisms are arranged, and the two wire releasing mechanisms are respectively connected to the lifting lugs below them; this device realizes the reduction of sway when the hoist lifts heavy objects underground, greatly improves the safety during lifting, and the heavy object can move in multiple directions during lifting, which is convenient for subsequent placement. However, when adjusting the height of the chassis of this device, the vertical beam and the adjusting seat are fixed by fixing bolts, so tools are needed, and the disassembly and installation are more troublesome. And after multiple disassembly and assembly, it may cause the threads to slip and be difficult to fix stably, thereby reducing the adjustment efficiency of the staff. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a safety frame for underground confined space construction, which has the advantages of being convenient for height adjustment, etc., and solves the problem that when adjusting the height of the chassis, the vertical beam and the adjusting seat are fixed by fixing bolts, so tools are needed, the disassembly and installation are more troublesome, and after multiple disassembly and assembly, it may cause the threads to slip and be difficult to fix stably, thereby reducing the adjustment efficiency of the staff.

[0005] To achieve the above object, the utility model provides the following technical scheme: A safety frame for underground confined space construction, including a fixing plate, three sides of the fixing plate are hingedly connected with support rods through hinge seats, a bottom of the inner cavity of the support rod is provided with an adjusting mechanism for facilitating adaptation to different well diameters, a center of the lower surface of the fixing plate is fixed with a cylinder, and a lower surface of the piston rod of the cylinder is provided with a winding and unwinding mechanism for controlling the winding and unwinding of a cable;

[0006] The adjusting mechanism includes a rotating sleeve rod, a rotating plate, a threaded rod, a support foot, two threaded insertion rods, and an anti-slip plate. The rotating sleeve rod is arranged at the bottom of the inner cavity of the support rod. The rotating plate is fixed on the outer surface of the rotating sleeve rod. A rotating groove is formed at the bottom of the inner cavity of the support rod. The threaded rod is arranged in the inner cavity of the support rod and located inside the rotating sleeve rod. The support foot is hinged to the lower surface of the threaded rod through a hinge seat. The two threaded insertion rods are threadedly connected to the front and rear ends of the upper surface of the support foot. The bottom of the threaded insertion rod penetrates through the support foot and extends to the lower side of the support foot. The anti-slip plate is fixed on the lower surface of the support foot.

[0007] By adopting this technical solution, the provided safety frame offers a stable and safe construction operation platform. The hinge connection between the fixed plate and the support rod through the hinge seat facilitates the user's carrying and storage. Moreover, the height of the support rod can be adjusted, and adjustable support feet are provided to adapt to different well diameters and ground conditions.

[0008] Furthermore, the support rod is in the shape of a cuboid with a hollow interior and a missing lower surface. The inner diameter of the support rod is larger than the outer diameter of the threaded rod.

[0009] By adopting this technical solution, the set inner diameter of the support rod being larger than the inner diameter of the threaded rod facilitates the up-and-down linear movement of the threaded rod inside the support rod.

[0010] Furthermore, the rotating sleeve rod and the threaded rod are threadedly connected. A limiting plate is fixed on the upper surface of the threaded rod, and the outer diameter of the limiting plate is larger than the inner diameter of the rotating sleeve rod.

[0011] By adopting this technical solution, the provided limiting plate can prevent the rotating sleeve rod from separating from the threaded rod.

[0012] Furthermore, an anti-slip sleeve is fixed on the outer surface of the rotating sleeve rod. The anti-slip sleeve is a rubber sleeve. The inner diameter of the rotating groove is adapted to the outer diameter of the rotating plate, and the rotating plate makes a horizontal circular motion inside the rotating groove.

[0013] By adopting this technical solution, the provided anti-slip sleeve can increase the friction between the hand and the rotating sleeve rod, and the provided rotating plate can limit the rotation of the rotating sleeve rod.

[0014] Furthermore, a positioning plate is fixed at the bottom of the threaded rod. Telescopic rods with an inverted L-shaped cross-section are fixed on both the left and right sides of the support rod. One side of the two telescopic rods facing each other is fixed to the positioning plate.

[0015] By adopting this technical solution, the provided positioning plate and telescopic rods can limit the movement of the threaded rod so that it can only perform linear motion.

[0016] Further, the retracting and extending mechanism includes an installation box, two rotating shafts, a shaft rod, and a driving rod. The installation box is fixed to the lower surface of the piston rod of the cylinder. The two rotating shafts are rotatably connected to opposite sides of the left and right inner side walls of the installation box cavity through bearings. The shaft rod is fixed between the opposite sides of the two rotating shafts. The driving rod is rotatably connected to the right side of the installation box through a bearing.

[0017] Further, the left side of the driving rod penetrates through the installation box and extends into the cavity of the installation box and is fixed to the right rotating shaft. A spiral spring is provided in the cavity of the left rotating shaft.

[0018] By adopting this technical solution, the cable is designed to be automatically retractable. The automatic retraction and arrangement of the rope can be achieved through the provided spiral spring, greatly improving the convenience during use.

[0019] Further, both left and right ends between the opposite sides of the installation box and the fixed plate are fixed with sliding rods. The sliding rods include outer rods and inner rods nested with each other. The two sliding rods are symmetrically distributed at the left and right ends of the vertical central axis of the installation box.

[0020] By adopting this technical solution, the two provided sliding rods can limit the movement of the installation box.

[0021] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0022] 1. For the safety frame for construction in limited underground space, the provided safety frame offers a stable and safe construction operation platform. The hinged connection between the fixed plate and the support rod through the hinge seat facilitates the user's carrying and storage. The height of the support rod can also be adjusted, and adjustable support feet can be set to adapt to different well diameters and ground conditions.

[0023] 2. For the safety frame for construction in limited underground space, the lifting mechanism for going down the well adopts a hydraulic lifting system, improving the lifting efficiency and stability. The cable is designed to be automatically retractable. The automatic retraction and arrangement of the cable can be achieved through the provided spiral spring, greatly improving the convenience during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present utility model;

[0025] Figure 2 is a schematic structural diagram of the adjustment mechanism of the present utility model;

[0026] Figure 3 is a 3D schematic structural diagram of the adjustment mechanism 3 of the present utility model;

[0027] Figure 4 is a schematic structural diagram of the retracting and extending mechanism of the present utility model.

[0028] In the figure: 1, fixed plate; 2, support rod; 3, adjusting mechanism; 31, rotating sleeve rod; 32, rotating plate; 33, rotating groove; 34, threaded rod; 35, support foot; 36, threaded insertion rod; 37, anti-slip plate; 4, cylinder; 5, retracting and releasing mechanism; 51, installation box; 52, rotating shaft; 53, shaft rod; 54, driving rod. Specific implementation manner

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1 , the safety frame for underground confined space construction in this embodiment includes a fixed plate 1. Three sides of the fixed plate 1 are hinged and connected to support rods 2 through hinge seats. At the bottom of the inner cavity of the support rod 2, there is an adjusting mechanism 3 for facilitating adaptation to different well diameters. At the center of the lower surface of the fixed plate 1, a cylinder 4 is fixed. On the lower surface of the piston rod of the cylinder 4, there is a retracting and releasing mechanism 5 for controlling the retraction and release of the cable.

[0031] In this embodiment, the support rod 2 is in the shape of a cuboid with a hollow interior and a missing lower surface.

[0032] Please refer to Figures 2 to 3, in order to adapt to different well diameters and ground conditions, the adjusting mechanism 3 in this embodiment includes a rotating sleeve rod 31, a rotating plate 32, a threaded rod 34, a support foot 35, two threaded insertion rods 36 and an anti-slip plate 37. The rotating sleeve rod 31 is arranged at the bottom of the inner cavity of the support rod 2. The rotating plate 32 is fixed on the outer surface of the rotating sleeve rod 31. A rotating groove 33 is formed at the bottom of the inner cavity of the support rod 2. By rotating the anti-slip sleeve on the outer surface of the rotating sleeve rod 31, the rotating sleeve rod 31 can be rotated. The rotation of the rotating sleeve rod 31 causes the rotating plate 32 fixed on its surface to rotate in the inner cavity of the rotating groove 33. The threaded rod 34 is arranged in the inner cavity of the support rod 2 and is located in the inner cavity of the rotating sleeve rod 31. The rotation of the rotating plate 32 causes the threaded rod 34 threadedly connected to it to move downward. The support foot 35 is hingedly connected to the lower surface of the threaded rod 34 through a hinge seat. The two threaded insertion rods 36 are threadedly connected to the front and rear ends of the upper surface of the support foot 35. The bottom of the threaded insertion rod 36 penetrates through the support foot 35 and extends to the lower side of the support foot 35. By arranging that the support foot 35 is hingedly connected to the threaded rod 34 through a hinge seat, various grounds can be adapted. Then, the threaded insertion rods 36 threadedly connected to the upper surface of the support foot 35 are screwed into the ground, and the support foot 35 can be fixed to the ground. The anti-slip plate 37 is fixed on the lower surface of the support foot 35. By screwing the threaded insertion rods 36 threadedly connected to the upper surface of the support foot 35 into the ground, the support foot 35 can be fixed to the ground. By arranging the anti-slip plate 37, the friction between the ground and the support foot 35 can be increased, so that the safety frame is more stable.

[0033] In this embodiment, the inner diameter of the support rod 2 is larger than the outer diameter of the threaded rod 34. The rotating sleeve rod 31 is threadedly connected to the threaded rod 34. A limiting plate is fixed on the upper surface of the threaded rod 34, and the outer diameter of the limiting plate is larger than the inner diameter of the rotating sleeve rod 31.

[0034] Among them, an anti-slip sleeve is fixed on the outer surface of the rotating sleeve rod 31. The anti-slip sleeve is a rubber sleeve. The inner diameter of the rotating groove 33 is adapted to the outer diameter of the rotating plate 32. The rotating plate 32 makes a horizontal circular motion in the inner cavity of the rotating groove 33. A positioning plate is fixed at the bottom of the threaded rod 34. Telescopic rods with an inverted L-shaped cross-section are fixed on both the left and right sides of the support rod 2. One side of the two telescopic rods facing each other is fixed to the positioning plate.

[0035] It can be understood that the hinged connection between the fixing plate 1 and the support rod 2 through a hinge seat can facilitate the user's carrying and storage, and can also adjust the height of the support rod 2 and set the adjustable support foot 35, so as to adapt to different well diameters and ground conditions.

[0036] Please refer to Figure 4, To achieve the automatic recycling and arrangement of the cable, the retracting and extending mechanism 5 in this embodiment includes an installation box 51, two rotating shafts 52, a shaft rod 53, and a driving rod 54. The installation box 51 is fixed to the lower surface of the piston rod of the air cylinder 4. The air cylinder 4 can be activated, and the piston rod of the air cylinder 4 moves downward, so that the installation box 51 moves downward. The two rotating shafts 52 are rotatably connected to opposite sides of the left and right inner side walls of the inner cavity of the installation box 51 through bearings. The shaft rod 53 is fixed between the opposite sides of the two rotating shafts 52. The driving rod 54 is rotatably connected to the right side of the installation box 51 through a bearing. When the installation box 51 moves to an appropriate position, then rotate the driving rod 54. The rotation of the driving rod 54 drives the rotation of the right rotating shaft 52. The rotation of the right rotating shaft 52 causes the shaft rod 53 to rotate. The rotation of the shaft rod 53 causes the cable to extend from the inner cavity of the cable guide hole, so that the material can be fixed and lifted.

[0037] Among them, the left side of the driving rod 54 penetrates through the installation box 51 and extends into the inner cavity of the installation box 51 and is fixed to the right rotating shaft 52. A clockwork spring is provided in the inner cavity of the left rotating shaft 52. Through the provided clockwork spring, the cable is automatically retracted to the outer surface of the shaft rod 53.

[0038] In this embodiment, sliding rods are fixed to both the left and right ends between the opposite sides of the installation box 51 and the fixing plate 1. The sliding rods include an outer rod and an inner rod that are nested with each other. The two sliding rods are symmetrically distributed at the left and right ends of the vertical central axis of the installation box 51.

[0039] It can be understood that by adopting a hydraulic lifting system, the lifting efficiency and stability are improved. The cable is designed to be automatically retractable. Through the provided clockwork spring, the automatic recycling and arrangement of the cable can be realized, improving the convenience during use.

[0040] The working principle of the above embodiment is as follows:

[0041] (1) When adjusting the length of the support rod 2, the anti-slip sleeve on the outer surface of the rotating sleeve rod 31 can be rotated to make the rotating sleeve rod 31 rotate. The rotation of the rotating sleeve rod 31 causes the rotating plate 32 fixed on its surface to rotate in the inner cavity of the rotating groove 33. The rotation of the rotating plate 32 causes the threaded rod 34 threadedly connected to it to move downward. Due to the setting of the positioning plate and the telescopic rod, the movement of the threaded rod 34 can be limited, so that the threaded rod 34 can only move linearly, thereby being able to adjust the height supported by the support rod 2. By setting that the support foot 35 is hinged to the threaded rod 34 through a hinge seat, it can adapt to various ground surfaces. Then, the threaded insertion rod 36 threadedly connected to the upper surface of the support foot 35 is screwed into the ground to fix the support foot 35 to the ground. By setting the anti-slip plate 37, the friction between the ground and the support foot 35 can be increased, making the safety frame more stable.

[0042] (2) Then, the cylinder 4 can be activated, and the piston rod of the cylinder 4 moves downward, so that the mounting box 51 moves downward. When the mounting box 51 moves to an appropriate position, then rotate the driving rod 54. The rotation of the driving rod 54 drives the rotation of the right-side rotating shaft 52. The rotation of the right-side rotating shaft 52 causes the shaft rod 53 to rotate. The rotation of the shaft rod 53 causes the cable to extend from the inner cavity of the cable guide hole, so that the material can be fixed and lifted. After lifting the material, the cable can be automatically retracted to the outer surface of the shaft rod 53 by means of the set hairspring.

Claims

1. A safety frame for construction in a limited space underground, comprising a fixing plate (1), characterized in that: The three sides of the fixed plate (1) are hingedly connected to support rods (2) via hinged seats; an adjustment mechanism (3) for accommodating different well diameters is provided at the bottom of the inner cavity of the support rod (2); a cylinder (4) is fixed at the center of the lower surface of the fixed plate (1); a retracting mechanism (5) for controlling the retraction and extension of the cable is provided on the lower surface of the piston rod of the cylinder (4); The adjustment mechanism (3) comprises a rotating sleeve rod (31), a rotating plate (32), a threaded rod (34), a support foot (35), two threaded insert rods (36) and an anti-slip plate (37); the rotating sleeve rod (31) is arranged at the bottom of the inner cavity of the support rod (2); the rotating plate (32) is fixed to the outer surface of the rotating sleeve rod (31); a rotating groove (33) is provided at the bottom of the inner cavity of the support rod (2); the threaded rod (34) is arranged in the inner cavity of the support rod (2) and is located in the inner cavity of the rotating sleeve rod (31); the support foot (35) is hingedly connected to the lower surface of the threaded rod (34) through a hinge seat; the two threaded insert rods (36) are threadedly connected to the front and rear ends of the upper surface of the support foot (35); the bottom of the threaded insert rod (36) passes through the support foot (35) and extends to the lower side of the support foot (35); and the anti-slip plate (37) is fixed to the lower surface of the support foot (35).

2. The safety frame for underground limited space construction according to claim 1 is characterized by: The support rod (2) is in the shape of a rectangular parallelepiped with a hollow interior and a missing lower surface, and the inner diameter of the support rod (2) is greater than the outer diameter of the threaded rod (34).

3. The safety frame for underground limited space construction according to claim 1 is characterized by: The rotating sleeve rod (31) is threadedly connected to the threaded rod (34); a limit plate is fixed on the upper surface of the threaded rod (34); and the outer diameter of the limit plate is greater than the inner diameter of the rotating sleeve rod (31).

4. The safety frame for underground limited space construction according to claim 1 is characterized by: An anti-slip sleeve is fixed to the outer surface of the rotating sleeve rod (31), and the anti-slip sleeve is a rubber sleeve. The inner diameter of the rotating groove (33) is matched with the outer diameter of the rotating plate (32), and the rotating plate (32) performs horizontal circular motion in the inner cavity of the rotating groove (33).

5. The safety frame for underground limited space construction according to claim 1 is characterized by: A positioning plate is fixed to the bottom of the threaded rod (34), and telescopic rods with an inverted L-shaped cross section are fixed to the left and right sides of the support rod (2), and opposite sides of the two telescopic rods are fixed to the positioning plate.

6. The safety frame for underground limited space construction according to claim 1 is characterized by: The retractable mechanism (5) comprises an installation box (51), two rotating shafts (52), a shaft rod (53) and a driving rod (54); the installation box (51) is fixed to the lower surface of the piston rod of the cylinder (4); the two rotating shafts (52) are rotatably connected to opposite sides of the left and right side walls of the inner cavity of the installation box (51) through bearings; the shaft rod (53) is fixed between opposite sides of the two rotating shafts (52); and the driving rod (54) is rotatably connected to the right side of the installation box (51) through a bearing.

7. The safety frame for underground limited space construction according to claim 6 is characterized by: The left side of the driving rod (54) passes through the installation box (51) and extends to the inner cavity of the installation box (51) and is fixed to the right rotating shaft (52). The inner cavity of the left rotating shaft (52) is provided with a spring.

8. The safety frame for underground limited space construction according to claim 6 is characterized by: Sliding rods are fixed at both left and right ends of the installation box (51) and the fixed plate (1) on one side opposite to the other. The sliding rods include an outer rod and an inner rod that are nested with each other. The two sliding rods are symmetrically distributed at the left and right ends of the vertical center axis of the installation box (51).

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