Assembled ladder cage suitable for vertical shaft

Abstract

The utility model provides an assembly type ladder cage suitable for a vertical shaft, which comprises a plurality of ladder cage units which are vertically connected, each ladder cage unit comprises a plurality of groups of stand columns, upper connecting cylinders are arranged at the upper ends of the stand columns, lower connecting cylinders are arranged at the lower ends of the stand columns, the horizontally adjacent upper connecting cylinders are connected through horizontal cross beams, and the horizontally adjacent lower connecting cylinders are connected through horizontal cross beams. The stand columns, the upper connecting cylinders, the lower connecting cylinders and the horizontal beams form a rectangular structure frame, the upper side of one end of the rectangular structure frame and the lower side of the other end of the rectangular structure frame are provided with ladder cage platforms, a ladder stand is arranged between the upper ladder cage platform and the lower ladder cage platform, and safety nets are arranged on the four sides of the rectangular structure frame. The lower connecting cylinder of the upper elevator cage unit and the upper connecting cylinder of the lower elevator cage unit in two vertically adjacent groups of elevator cage units are connected through bolts, and the crawling ladders of the two vertically adjacent groups of elevator cage units are distributed in a staggered manner. The ladder cage can be adjusted at any time according to the excavation depth of the deep foundation pit during construction, and is high in universality and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit ladder cages, in particular to an assembled ladder cage suitable for a vertical shaft. Background Art

[0002] The development of urban construction has driven the development of underground space. At present, underground space for various purposes has been developed and utilized in major and medium-sized cities around the world, such as underground parking garages, underground streets, and various underground civil and industrial facilities. At the same time, the number and scale of underground engineering construction projects have increased rapidly, such as foundation pits of high-rise buildings, deep trenches of large pipelines, and deep foundation pits of stations in subway projects. The construction of these underground spaces has generated a large number of deep foundation pit projects.

[0003] The foundation pit ladder cage is a kind of equipment used in foundation pit engineering construction. It can provide a safe passage to ensure the safety of personnel and materials entering and leaving the foundation pit, which is of great significance to engineering construction.

[0004] At present, traditional steel box-type ladder cages are mostly used for vertical passages for personnel in deep foundation pit construction. Since steel box-type ladder cages have been rented and sold for a long time, the surface is often rusty, which will affect the civilized construction on site to a certain extent. In addition, the quality of such ladder cages is uneven, which may bring safety hazards to the vertical passage of personnel. In addition, in the process of digging downwards in the foundation pit, the lengthening of the ladder cage is mainly to extend the ladder cage from the bottom of the ladder cage, or to reinstall the ladder cage. Extending the ladder cage from the bottom requires transporting the required raw materials to the lower end of the foundation pit, which is cumbersome, time-consuming and labor-intensive; reinstallation requires first dismantling the entire ladder cage and then installing it again, which is even more time-consuming and labor-intensive.

[0005] After searching, the patent with publication number CN218881719U published on April 18, 2023 discloses a transportation civil engineering deep foundation pit ladder cage, which solves the problem that the ladder cage is too high and causes unstable shaking and high danger. It is roughly described as: including ladder cage side rods, ladder cage cross rods, circular hanging rings, rectangular ladder cage bottom plates, extended anti-rollover plates, U-shaped hanging plates, fixed baffles, sliding baffles, vertical hangers, and circular stoppers. The two ends of the ladder cage cross rods are connected to the ladder cage side rods, and the lower part of the ladder cage side rods is connected to the rectangular ladder cage. Bottom plate, multiple cage side rods are distributed at the four corners of the rectangular cage bottom plate, multiple cage cross rods are evenly distributed up and down, circular hanging rings are connected to the cage side rods, multiple circular hanging rings are evenly distributed up and down, the lower surface of the extended anti-rollover plate is aligned with the lower surface of the rectangular cage bottom plate, the lower part of the U-shaped hanging plate is connected to the rectangular cage bottom plate, the side of the extended anti-rollover plate has an extended anti-rollover plate side hook, the extended anti-rollover plate side hook is adapted to the U-shaped hanging plate, the extended anti-rollover plate side hook is inserted into the U-shaped hanging plate, and three extended anti-rollover plates are distributed on the axial side of the rectangular cage bottom plate. The side rods of the ladder cage and the cross rods of the ladder cage cooperate with each other to form a ladder cage. A baffle is installed on the side of the ladder cage. The circular hanging ring is arranged on the side of the ladder cage close to the foundation pit wall, which is convenient for fixing the ladder cage on the side wall of the foundation pit with a buckle to prevent the ladder cage from shaking and being unstable due to being too high. The rectangular ladder cage bottom plate is placed at the bottom of the ladder cage to prevent the ladder cage from being stable during use in the deep foundation pit of transportation and civil engineering, and to prevent the ladder cage from sinking during use. The extended anti-rollover plate side hooks are inserted into the U-shaped hanging plate, and three extended anti-rollover plates are distributed on the outside of the rectangular ladder cage bottom plate to reinforce the entire device to prevent shaking. The fixed baffle is inserted into the fixed baffle groove to fix the fixed baffle on the ladder cage, and the sliding baffle is inserted into the sliding baffle slot. The sliding baffle cooperates with the fixed baffle to block one side of the ladder cage, and the sliding baffle can be slid open to facilitate emergency escape.

[0006] Although the above-mentioned existing technical solutions can be used as ladder cages for entering and exiting deep foundation pits in the process of transportation and civil engineering, the overall height of the ladder cage and the uneven bottom of the foundation pit require simple fixing measures for the bottom of the ladder cage, which is easily corroded by the humid environment in the shaft, greatly reducing the stability and safety of the ladder cage, causing the ladder cage to tilt or even collapse. In addition, it is inconvenient to adjust the height according to the subsequent foundation construction in the foundation pit, and is difficult to apply to the entire cycle of the foundation pit excavation process and the subsequent foundation construction. It has a short service life and poor practicality. Summary of the invention

[0007] The technical problem to be solved by the utility model is to provide an assembled ladder cage suitable for a vertical shaft, which can be adjusted at any time according to the excavation depth of a deep foundation pit during construction, has strong versatility and is easy to use.

[0008] To solve the above technical problems, the technical solution adopted by the utility model is: an assembled ladder cage suitable for a vertical shaft, comprising a plurality of ladder cage units connected vertically, the ladder cage units comprising a plurality of groups of columns, an upper connecting tube is provided at the upper end of the column, a lower connecting tube is provided at the lower end, horizontally adjacent upper connecting tubes and horizontally adjacent lower connecting tubes are connected by horizontal beams, the columns, the upper connecting tubes, the lower connecting tubes and the horizontal beams form a rectangular structural frame, ladder cage platforms are provided on the upper side of one end and the lower side of the other end of the rectangular structural frame, a ladder is provided between the upper and lower groups of ladder cage platforms, a safety net is provided on the four sides of the rectangular structural frame, the lower connecting tube of the upper ladder cage unit in the two adjacent groups of ladder cage units is connected to the upper connecting tube of the lower ladder cage unit by bolts, and the ladders of the two adjacent groups of ladder cage units are staggered.

[0009] In a preferred solution, a supporting crossbeam is provided at the bottom of the cage platform, and both ends of the supporting crossbeam are connected to oppositely arranged horizontal crossbeams.

[0010] In a preferred solution, a support plate is provided at the bottom of the lower connecting tube of the lowermost cage unit, and a through hole for cooperating with the anchor rod is provided on the support plate.

[0011] In the preferred solution, the upper connecting tube of the lowest cage unit and the upper connecting tubes and lower connecting tubes of other cage units are provided with side protection plates on one side, and through holes are provided on the side protection plates, and "L"-shaped reinforcement rods are inserted into the through holes of the upper and lower adjacent side protection plates.

[0012] In a preferred solution, a vertically arranged connecting plate is provided on the horizontal beam, and the safety net is connected to the connecting plate by bolts.

[0013] In a preferred solution, the ladder includes ladder beams on both sides, a plurality of steps are arranged between the ladder beams, and handrails are arranged on the upper sides of the ladder beams.

[0014] In a preferred solution, a reinforcing rib is provided at the bottom of the step.

[0015] In a preferred solution, vertically arranged end plates are provided at both upper and lower ends of the ladder beam.

[0016] In a preferred solution, the safety net comprises an edge frame, a protective net is arranged inside the frame, and the frame is provided with obliquely arranged reinforcement rods.

[0017] The utility model provides an assembled ladder cage suitable for a vertical shaft, which has the following beneficial effects:

[0018] 1. Through the design of the ladder cage unit, a highly adjustable assembled ladder cage is formed. During construction, it can be adjusted at any time according to the excavation depth of the foundation pit, and can also be adjusted accordingly according to the gradual increase of the subsequent foundation construction. It has the characteristics of strong versatility and convenient use.

[0019] 2. The entire cage is reinforced by four support plates distributed at the bottom cage unit to prevent the cage from shaking or even tipping over during use, and to prevent the cage from sinking due to the humid environment in the shaft. At the same time, it is not completely dependent on or fixed to the shaft wall, has strong flexibility, can be applied to various types of shafts, and is suitable for the complex environment at the bottom of the shaft. It has the advantages of simple installation, good applicability, and reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 It is a structural schematic diagram of the ladder cage unit of the utility model;

[0022] Figure 2 This is a schematic diagram of the distribution of the ladder of the utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the ladder;

[0024] Figure 4 This is a schematic diagram of the structure of the safety net;

[0025] In the figure: column 1, upper connecting tube 2, lower connecting tube 3, horizontal beam 4, ladder cage platform 5, ladder 6, safety net 7, supporting beam 8, supporting plate 9, anti-side plate 10, reinforcement rod 11, connecting plate 12, ladder beam 601, step 602, handrail 603, reinforcement rib 604, end plate 605, frame 701, protection net 702, reinforcement rod 703, anchoring through hole 901. DETAILED DESCRIPTION

[0026] like Figure 1~2As shown, an assembled ladder cage suitable for a shaft includes a plurality of ladder cage units connected vertically. The material of each component of the ladder cage unit is stainless steel, which can enhance the corrosion resistance and durability of the ladder cage, extend the service life of the ladder cage, reduce the maintenance times of the ladder cage, and effectively resist scaling of the outer surface, and is beautiful and easy to clean. The number of ladder cage units is set according to the height of the shaft. The ladder cage unit includes a plurality of groups of columns 1. In this embodiment, the number of columns 1 is four groups, which are distributed in a rectangular shape. An upper connecting tube 2 is provided at the upper end of the column 1, and a lower connecting tube 3 is provided at the lower end. The upper and lower ends of the column 1 are respectively connected to the upper connecting tube 2 and the lower connecting tube 3 by bolts. The lower connecting tube 3 of the upper ladder cage unit in the two adjacent groups of ladder cage units is connected to the upper connecting tube 2 of the lower ladder cage unit by bolts. Specifically, the upper connecting tube 3 and the lower connecting tube 3 are set together. The horizontally adjacent upper connecting tubes 2 and the horizontally adjacent lower connecting tubes 3 are connected by horizontal beams 4. The columns 1, the upper connecting tubes 2, the lower connecting tubes 3 and the horizontal beams 4 form a rectangular structural frame to form a stable and reliable support. The upper side of one end of the rectangular structural frame and the lower side of the other end are provided with ladder cage platforms 5. The two ends of the ladder cage platforms 5 are welded and connected to the relatively arranged horizontal beams 4. A ladder 6 is arranged between the upper and lower sets of ladder cage platforms 5. Safety nets 7 are arranged on the four sides of the rectangular structural frame. The ladders 6 of the two upper and lower adjacent sets of ladder cage units are staggered.

[0027] Preferably, a supporting beam 8 is provided at the bottom of the cage platform 5, and both ends of the supporting beam 8 are connected to the relatively arranged horizontal beams 4. By providing the supporting beam 8, the installation strength of the cage platform 5 is improved, and the installation of the ladder 6 is facilitated. When in use, the ladder 6 is welded to the supporting beam 8.

[0028] Preferably, a support plate 9 is provided at the bottom of the lower connecting tube 3 of the lowermost cage unit, and an anchoring through hole 901 for cooperating with an anchor rod is provided on the support plate 9. By providing the support plate 9, on the one hand, the contact area between the lower end of the cage and the ground is increased, and on the other hand, by inserting the anchor rod into the anchoring through hole 901, the connection strength with the ground is increased, so as to avoid the cage from shaking or even turning over during use, and prevent the cage from sinking due to the humid environment in the shaft.

[0029] Preferably, the upper connecting tube 2 of the lowermost cage unit and the upper connecting tubes 2 and lower connecting tubes 3 of other cage units are provided with a side-proof plate 10, and a through hole is provided on the side-proof plate 10, and an "L"-shaped reinforcement rod 11 is inserted into the through hole of the upper and lower adjacent side-proof plates 10. By inserting the reinforcement rod 11 into the through hole of the adjacent side-proof plates 10, the connection strength between adjacent cage units can be improved, and the entire cage can be reinforced.

[0030] Preferably, a vertically arranged connecting plate 12 is provided on the horizontal beam 4, and the safety net 7 is connected to the connecting plate 12 by bolts. The safety net 7 can be detached by providing the connecting plate 12, so that replacement is convenient.

[0031] like Figure 3 As shown, the ladder 6 includes ladder beams 601 on both sides, a plurality of groups of steps 602 are arranged between the ladder beams 601, and a handrail 603 is arranged on the upper side of the ladder beams 601. The two groups of ladder beams 601 are connected by arranging the steps 602, and the ladder beams 601 support the pedals 602. In this embodiment, the steps 602 are arranged with 7 steps, and reinforcing ribs 604 are arranged at the bottom of the steps 602. Three 4mm steel plates are arranged at the bottom of each group of steps 602 to serve as reinforcing ribs 604, so as to improve the structural strength of the entire ladder 6.

[0032] The upper and lower ends of the ladder beam 601 are both provided with vertically arranged end plates 605. The end plates 605 are provided to increase the connection area between the ladder 6 and the supporting beam 8 or the cage platform 5, which is beneficial to improve the connection strength.

[0033] like Figure 4 As shown, the safety net 7 includes an edge frame 701. Specifically, the frame 701 includes two groups of horizontal bars and two groups of vertical bars, forming a rectangular frame. A protective net 702 is arranged inside the frame 701. The frame 701 is provided with obliquely arranged reinforcing rods 703. Two groups of reinforcing rods 703 are arranged, obliquely arranged, and distributed in an "X" shape.

[0034] The assembly process of the assembled ladder cage is as follows:

[0035] First, the ladder cage units are assembled on the construction site, and then the assembled ladder cage units are hoisted into the shaft or foundation pit. After the lowest ladder cage unit is in place, the anchor rod is inserted into the anchoring through hole 901 of the support plate 9 to install the first section of the ladder cage unit. Then another group of ladder cage units are hoisted to the upper end of the installed ladder cage, and the lower connecting tube 3 of the ladder cage unit located above is inserted into the upper connecting tube 2 of the ladder cage unit located below, and then fixed with bolts, and then the reinforcement rod 11 is inserted into the through hole in the upper and lower adjacent side plates 10 for reinforcement. Repeat the operation until the installation of all ladder cage units is completed. When in specific use, connecting rods between the ladder cage unit and the shaft wall can be installed according to the situation to improve the connection strength.

Claims

1. An assembled ladder cage suitable for a vertical shaft, characterized in that: The invention comprises a plurality of vertically connected cage units, wherein the cage units comprise a plurality of groups of columns (1), wherein an upper connecting tube (2) is provided at the upper end of the column (1), and a lower connecting tube (3) is provided at the lower end, wherein horizontally adjacent upper connecting tubes (2) and horizontally adjacent lower connecting tubes (3) are connected via a horizontal crossbeam (4), wherein the columns (1), the upper connecting tube (2), the lower connecting tube (3) and the horizontal crossbeam (4) form a rectangular structural frame, wherein a cage platform (5) is provided at the upper side of one end and the lower side of the other end of the rectangular structural frame, wherein a ladder (6) is provided between the upper and lower cage platforms (5), wherein a safety net (7) is provided on four sides of the rectangular structural frame, wherein the lower connecting tube (3) of the upper cage unit in the two upper and lower adjacent cage units is connected to the upper connecting tube (2) of the lower cage unit via bolts, and the ladders (6) of the two upper and lower adjacent cage units are arranged in a staggered manner.

2. The assembled ladder cage suitable for a vertical shaft according to claim 1, characterized in that: A supporting crossbeam (8) is provided at the bottom of the cage platform (5), and both ends of the supporting crossbeam (8) are connected to oppositely arranged horizontal crossbeams (4).

3. The assembled ladder cage suitable for a vertical shaft according to claim 1, characterized in that: A support plate (9) is provided at the bottom of the lower connecting tube (3) of the cage unit at the lowest end, and an anchoring through hole (901) for cooperating with an anchor rod is provided on the support plate (9).

4. The assembled ladder cage suitable for a vertical shaft according to claim 1, characterized in that: The upper connecting tube (2) of the lowermost cage unit and the upper connecting tubes (2) and lower connecting tubes (3) of other cage units are all provided with a side-protection plate (10) on one side, the side-protection plate (10) is provided with a through hole, and an "L"-shaped reinforcement rod (11) is inserted into the through holes of the upper and lower adjacent side-protection plates (10).

5. The assembled ladder cage suitable for a vertical shaft according to claim 1, characterized in that: A vertically arranged connecting plate (12) is provided on the horizontal crossbeam (4), and the safety net (7) is connected to the connecting plate (12) via bolts.

6. The assembled ladder cage suitable for a vertical shaft according to claim 1, characterized in that: The ladder (6) comprises ladder beams (601) on both sides, a plurality of sets of steps (602) are arranged between the ladder beams (601), and a handrail (603) is arranged on the upper side of the ladder beams (601).

7. The assembled ladder cage suitable for a vertical shaft according to claim 6, characterized in that: A reinforcing rib (604) is provided at the bottom of the step (602).

8. The assembled ladder cage suitable for a vertical shaft according to claim 6, characterized in that: The ladder beam (601) is provided with vertically arranged end plates (605) at both the upper and lower ends.

9. The assembled ladder cage suitable for a vertical shaft according to claim 1, characterized in that: The safety net (7) comprises an edge frame (701), a protection net (702) is arranged inside the frame (701), and the frame (701) is provided with an inclined reinforcement rod (703).

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