Overhanging type inclined ladder equipment

Abstract

The utility model belongs to the field of bearing platform foundation pit construction, and particularly relates to overhanging type inclined ladder equipment which comprises an inclined ladder main body, an overhanging frame used for connecting the inclined ladder main body with a steel sheet pile, an inclined strut connected below the overhanging frame and a cross beam arranged on the same face of the overhanging frame with the inclined strut. The inclined strut comprises an inclined strut vertical rod and an inclined strut inclined rod; the inclined strut vertical rod is vertically arranged, one end of the inclined strut vertical rod is connected to the cantilever frame, the other end of the inclined strut vertical rod is connected with the inclined strut inclined rod, the inclined strut inclined rod is obliquely arranged, one end of the inclined strut inclined rod is connected to the cantilever frame, and the other end of the inclined strut inclined rod is connected with the inclined strut vertical rod; the cross beam is located on one side of the inclined strut vertical rod, and the distance between the inclined strut vertical rod and the cross beam is equal to the thickness of a steel sheet pile. The inclined ladder body is hinged to the cantilever frame, and a hinged shaft is perpendicular to the steel sheet piles. The end, making contact with the ground, of the inclined ladder body of the overhanging type inclined ladder equipment avoids the bearing platform in the cofferdam and extends towards the edge of the cofferdam, the space of the edge of the cofferdam is fully utilized, the influence on foundation pit construction is small, and people can enter and exit conveniently.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of bearing platform foundation pit construction, and specifically relates to a cantilevered inclined ladder equipment. BACKGROUND

[0002] After the bridge bearing platform foundation pit is surrounded by steel sheet piles, a cofferdam is formed, and construction personnel need to enter and exit the cofferdam through an inclined ladder with the upper end on the top of the steel sheet piles and the lower end on the bottom surface of the foundation pit. In order to reduce the cofferdam workload, the distance from the inner side of the steel sheet piles to the bearing platform is as small as possible in the actual construction process, which leads to the distance from the inner side of the steel sheet piles to the bearing platform being shortened to 80-100 cm, so that the middle part of the edge of the cofferdam does not have the space required for installing a conventional inclined ladder. At the same time, in order to facilitate the pre-embedded installation of the reinforcement cage of the pier column of the bearing platform and reduce the number of support structures in the middle part of the cofferdam, the steel sheet piles at the four corners of the foundation pit are provided with reinforced triangular support structures, so that the four corners of the cofferdam also do not have the space for installing a conventional inclined ladder. In order to reduce the space occupation, a straight ladder is used, that is, one end of the ladder is directly hung on the steel sheet piles, and the other end is vertically downward to the bottom of the foundation pit, and the construction personnel enter and exit the cofferdam by climbing the straight ladder. This requires higher skills and physical fitness of the construction personnel, and there is a safety risk. SUMMARY

[0003] The utility model is to overcome the above-mentioned deficiencies of the existing ladder, reduce the labor intensity and skill requirements of the construction personnel in climbing, and reduce the safety risk, and provides a cantilevered inclined ladder equipment which can be quickly installed and removed at any part of the steel sheet pile cofferdam.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a cantilevered inclined ladder equipment, which comprises an inclined ladder main body, a cantilevered frame for connecting the inclined ladder main body and the steel sheet piles, an inclined support connected below the cantilevered frame, and a cross beam on the same surface of the cantilevered frame as the inclined support; the inclined support comprises an inclined support vertical rod and an inclined support inclined rod; the inclined support vertical rod is vertically arranged and connected at one end to the cantilevered frame and at the other end to the inclined support inclined rod, and the inclined support inclined rod is obliquely arranged and connected at one end to the cantilevered frame and at the other end to the inclined support vertical rod; the cross beam is located on one side of the inclined support vertical rod, and there is a gap between the inclined support vertical rod and the cross beam which is adapted to the thickness of the steel sheet piles; the inclined ladder main body is hinged to the cantilevered frame, and the hinge shaft is perpendicular to the steel sheet piles.

[0005] By implementing the above scheme, the steel sheet pile can be clamped in the gap between the inclined support and the cross beam, and the cantilever frame can be fixed on the top of the steel sheet pile, realizing rapid installation and removal; after the construction personnel climb onto the cantilever frame, they can reach the bottom of the foundation pit in the cofferdam through the inclined ladder body. When the construction personnel stand on the cantilever frame, the load on the cantilever frame is transmitted to the steel sheet pile through the inclined support and the cross beam, and the main load is borne by the steel sheet pile, thereby improving the stability of the cantilever frame. The hinge shaft of the hinge connection between the inclined ladder body and the cantilever frame is perpendicular to the steel sheet pile, so that the inclined ladder body can be installed in the cofferdam between the bearing platform and the steel sheet pile, avoiding the bearing platform in the center of the cofferdam, extending towards the edge of the cofferdam, fully utilizing the space of the edge of the cofferdam, and avoiding the problem that the inclined ladder cannot be installed due to the obstruction of the triangular support structure at the four corners of the bearing platform and the cofferdam, so that the construction personnel can safely enter and exit the cofferdam through the inclined ladder. At the same time, the hinge connection between the inclined ladder and the cantilever frame can automatically adjust the support height of the inclined ladder body to adapt to different ground levels.

[0006] Further, the inclined ladder body includes an inclined ladder main beam, a plurality of step plates arranged on the inclined ladder main beam, and a guardrail arranged on both sides of the inclined ladder main beam; the side edge of the cantilever frame is provided with a hinge plate having a hinge hole, and the end of the inclined ladder main beam is also provided with a corresponding hinge hole, and the inclined ladder main beam is hingedly connected with the hinge plate through a shaft pin matched with the hinge hole of the inclined ladder main beam, so that the inclined ladder main beam can rotate around the hinge position.

[0007] By implementing the above scheme, the safety of the construction personnel when climbing the inclined ladder is improved. When the height of the cantilever frame to the ground changes, the inclined ladder body can be automatically rotated through the hinge connection, the included angle between the inclined ladder body and the ground is changed, and the height change is adapted.

[0008] Further, the cantilever frame includes at least two main load-bearing beams and a load-bearing cross beam arranged between the main load-bearing beams.

[0009] Further, the inclined support vertical rods and the inclined support inclined rods are both provided with two.

[0010] Further, the inclined support further includes an inclined support reinforcing cross support fixedly connected between the two inclined support vertical rods, and the end of the inclined support reinforcing cross support is connected with the inclined support vertical rod.

[0011] Further, the inclined support further includes an inclined support scissor support arranged between the two inclined support inclined rods, and the end of the inclined support scissor support is connected with the inclined support inclined rod. In this way, the structural strength of the inclined support can be enhanced, and the support effect and stability can be improved.

[0012] Further, the hinge plate and the inclined support are both on the same side of the cross beam.

[0013] Thus, the part of the cantilever frame provided with the inclined brace is suspended on the inner side of the cofferdam, the side edge of the part is connected with the inclined ladder body, so that the inclined ladder body can pass to the bottom surface of the foundation pit in the cofferdam.

[0014] Further, the cantilevered inclined ladder device further comprises a patterned steel panel laid on the side of the cantilever frame for bearing personnel or objects.

[0015] Thus, the gap between the main load-bearing beam and the load-bearing cross beam is covered, preventing the construction personnel from being injured by falling.

[0016] Further, the side edge of the cantilever frame not connected with the inclined ladder body is provided with a fence, which improves the safety and prevents the construction personnel from falling into the foundation pit by accident.

[0017] Compared with the prior art, the cantilevered inclined ladder device has the following beneficial effects:

[0018] (1) In the cantilevered inclined ladder device, the distance between the vertical surface of the inclined brace connected below the cantilever frame and the cross beam on the same surface of the inclined brace is adapted to the thickness of the steel sheet pile (the distance is slightly larger than the thickness of the steel sheet pile), so that the steel sheet pile can be clamped between the inclined brace and the cross beam, that is, the cantilever frame can be fixed, and quick installation and removal are achieved. When the construction personnel stand on the cantilever frame, the load on the cantilever frame is transmitted to the steel sheet pile through the inclined brace and the cross beam, and the main load is borne by the steel sheet pile, so that the bearing capacity of the foundation of the foundation pit is not high, and the construction cost is saved.

[0019] (2) In the cantilevered inclined ladder device, the inclined ladder main beam is connected to the side edge of the cantilever frame, the hinge shaft of the hinge connection between the inclined ladder main beam and the cantilever frame is perpendicular to the steel sheet pile, and the angle between the path direction from the ground to the cantilever frame and the path direction from the cantilever frame to the inclined ladder body is 90°, so that the inclined ladder body avoids the pile cap in the cofferdam and extends towards the edge of the cofferdam, fully utilizes the space of the edge of the cofferdam, and avoids the problem that the inclined ladder cannot be installed due to the obstruction of the triangular support structure at the four corners of the pile cap and the cofferdam, so that the construction personnel can safely enter and exit the cofferdam through the inclined ladder.

[0020] (3) In the cantilevered inclined ladder device, the side edge of the cantilever frame is provided with a hinge plate with a hinge hole, and the end of the inclined ladder main beam also has a corresponding hinge hole, the inclined ladder main beam is hingedly connected with the hinge plate through the hinge hole of the inclined ladder main beam and the shaft pin, so that the inclined ladder main beam can rotate around the hinge position. By rotating the inclined ladder body, the angle between the inclined ladder body and the ground is changed to adjust the height, so that the depth of the foundation pit can be adapted within a certain range, and the inclined ladder can also be lengthened to adapt to the height adjustment requirements in a larger range. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is an overall structural diagram of the cantilevered inclined ladder device.

[0022] Figure 2 For Figure 1 The right view of the cantilevered ladder equipment.

[0023] Figure 3 The plan view of the cantilevered frame.

[0024] Figure 4 The structure view of the diagonal brace.

[0025] Figure 5 The patterned steel panel.

[0026] Figure 6 The detail view of the ladder body.

[0027] Figure 7 The installation schematic view of the cantilevered ladder equipment.

[0028] The reference signs are explained as follows:

[0029] Cantilevered frame 1, main load-bearing beam 11, load-bearing cross beam 12, hinged plate 13, fence 14, ladder body 2, ladder beam 21, step plate 22, guardrail 23, shaft pin 24, diagonal brace 3, diagonal brace vertical rod 31, diagonal brace diagonal rod 32, diagonal brace reinforcing cross brace 33, diagonal brace scissor brace 34, cross beam 4, steel sheet pile 5, patterned steel panel 6. DETAILED DESCRIPTION

[0030] In order to better understand the purpose, structure and function of the utility model, the cantilevered ladder equipment of the utility model will be further described in detail below in combination with the drawings 1-7. In the following description, the indicating directions or position relations such as terms "inner", "outer", "upper", "lower", "left", "right" and the like are only for the convenience of describing the embodiments and simplifying the description, and are not indicative or suggestive of the devices or elements indicated must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as a limitation on the utility model.

[0031] Embodiment 1

[0032] The embodiment provides a cantilevered ladder equipment, referring to Figures 1-4The cantilevered ladder device comprises a cantilever frame 1, a ladder body 2, a diagonal brace 3, and a cross beam 4. The ladder body 2 is connected to the steel sheet pile 5 through the cantilever frame 1. The cantilever frame 1 is welded by two main load-bearing beams 11 and three load-bearing cross beams 12, and the main load-bearing beams 11 and the load-bearing cross beams 12 are both made of profile steel. The two main load-bearing beams 11 are parallel to each other, the load-bearing cross beams 12 are perpendicular to the main load-bearing beams 11, the ends of the two main load-bearing beams 11 are welded to the ends of the two load-bearing cross beams 12 respectively, and the ends of the other load-bearing cross beam 12 are welded to the midpoints of the two main load-bearing beams 11 respectively. The diagonal brace 3 is composed of a diagonal brace vertical rod 31 and a diagonal brace inclined rod 32, and both are made of profile steel. The two diagonal braces 3 are welded on the two main load-bearing beams 11 respectively, the diagonal brace vertical rod 31 is vertically arranged and one end is welded on the main load-bearing beam 11 and the other end is connected with the diagonal brace inclined rod 32, and the diagonal brace inclined rod 32 is obliquely arranged and one end is welded on the main load-bearing beam 11 and the other end is welded with the diagonal brace vertical rod 31. The cross beam 4 is welded on the main load-bearing beam 11 and is parallel to the load-bearing cross beam 12. The two diagonal brace vertical rods 31 are on the same side of the cross beam 4, the diagonal brace vertical rod 31 and the cross beam 4 are welded on the same side of the main load-bearing beam 11, and the distance from the two diagonal brace vertical rods 31 to the cross beam 4 is equal to the thickness of the steel sheet pile 5. In this way, a clamping opening is formed between the diagonal brace vertical rod 31 and the cross beam 4, the steel sheet pile is clamped into the clamping opening, the cantilever frame is fixed on the steel sheet pile, and the part of the cantilever frame provided with the diagonal brace is suspended in the cofferdam. Two hinged plates 13 are welded on the side of the longer edge of the main load-bearing beam 11, and the hinged plates 13 are provided with hinged holes. The hinged plates 13 and the diagonal brace are on the same side of the cross beam 4. The diagonal ladder beam 21 is provided with corresponding hinged holes, the hinged holes on the hinged plates 13 are connected with the hinged holes on the diagonal ladder beam 21 through a shaft pin 24, so that the ladder body 2 can rotate around the main load-bearing beam 11. When the height of the cantilever frame to the ground changes, the angle between the ladder body 2 and the ground is changed by rotating the ladder body 2, so that the height of the ladder body 2 is changed to adapt to the change in height. The construction personnel enter the cantilever frame from the side close to the cross beam 4, reach the ladder body 2 from the side close to the longer edge of the main load-bearing beam 11, and then enter the bottom surface of the foundation pit. The end of the ladder body in the cantilevered ladder device that contacts the ground avoids the pile cap in the cofferdam and extends towards the edge of the cofferdam, fully utilizing the space of the edge of the cofferdam.

[0033] Example 2

[0034] The embodiment provides a cantilever type inclined ladder equipment which is further optimized on the basis of the embodiment 1. The end of the inclined brace reinforcing cross brace 33 is welded at the end of the two inclined brace vertical rods 31 away from the main load-bearing beam 11, and the end of the inclined brace reinforcing cross brace 33 is connected with the inclined brace vertical rod 31; or the end of the inclined brace scissor brace 34 is welded at the end of the two inclined brace inclined rods 32. The structural strength of the inclined brace 3 is enhanced, and the stability of the cantilever frame 1 is improved. The cross beam 4 comprises two steel profiles which are fixed with each other by welding of steel plates, the strength of the cross beam 4 is enhanced, the cross beam 4 can bear larger load, and the stability of the cantilever frame 1 is improved. The fence 14 is welded at the edge of the cantilever frame 1 which is not connected with the inclined ladder body 2, except the side close to the cross beam 4, the safety is improved, and the construction personnel is prevented from falling into the foundation pit by accident. The pattern steel panel 6 is laid on the top of the cantilever frame 1, and the construction personnel is prevented from stepping on the empty space. The guardrail 23 is welded on the inclined ladder beam 21, the step plate 22 on the inclined ladder beam 21 is in an "L" shape, the long side is horizontal, the short side is vertical, the opening is away from the sole of the foot, the foot is prevented from being kicked, and the safety is improved.

[0035] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to the features and embodiments without departing from the spirit and scope of the utility model. In addition, the features and embodiments can be modified to adapt to specific conditions and materials under the guidance of the utility model without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all the embodiments falling within the scope of the claims of the application belong to the range protected by the utility model.

Claims

1. A cantilevered ramp device, characterized in that, The invention discloses a steel sheet pile inclined ladder, which comprises a ladder body (2), a cantilever frame (1) for connecting the ladder body (2) with a steel sheet pile (5), an inclined support (3) installed below the cantilever frame (1), and a crossbeam (4) installed below the cantilever frame (1); the inclined support (3) comprises an inclined support vertical rod (31) and an inclined support inclined rod (32); the inclined support vertical rod (31) is vertically arranged and connected to one end of the cantilever frame (1) and the other end of the inclined support inclined rod (32); the inclined support inclined rod (32) is obliquely arranged and connected to one end of the cantilever frame (1) and the other end of the inclined support vertical rod (31); the crossbeam (4) is located on one side of the inclined support vertical rod (31), and the distance from the inclined support vertical rod (31) to the crossbeam (4) is equal to the thickness of the steel sheet pile (5); the ladder body (2) is hinged to the cantilever frame (1), and the hinge shaft is perpendicular to the steel sheet pile (5).

2. A cantilevered ramp apparatus as claimed in claim 1, wherein, The ladder body (2) comprises a ladder main beam (21), a plurality of step plates (22) arranged on the ladder main beam (21), and a guardrail (23) arranged on both sides of the ladder main beam (21); the side of the cantilever frame (1) is provided with a hinge plate (13) with a hinge hole, and the end of the ladder main beam (21) also has a corresponding hinge hole; the ladder main beam (21) is hinged to the hinge plate (13) through a shaft pin (24) matched with the hinge hole of the ladder main beam (21), so that the ladder main beam (21) can rotate around the hinge position.

3. A cantilevered ramp apparatus as defined in claim 1, wherein The cantilever frame (1) comprises at least two main bearing beams (11) and a bearing crossbeam (12) arranged between the main bearing beams (11).

4. A cantilevered ramp apparatus as defined in claim 1, wherein, Both the inclined support vertical rod (31) and the inclined support inclined rod (32) are provided with two rods.

5. A projecting ramp apparatus according to claim 4, wherein The inclined support (3) further comprises an inclined support reinforcing cross support (33) fixedly connected between the two inclined support vertical rods (31), and the end of the inclined support reinforcing cross support (33) is connected with the inclined support vertical rod (31).

6. A projecting ramp apparatus according to claim 4, wherein The inclined support (3) further comprises an inclined support scissor support (34) arranged between the two inclined support inclined rods (32), and the end of the inclined support scissor support (34) is connected with the inclined support inclined rod (32).

7. A cantilevered ramp apparatus as claimed in claim 2, wherein, The hinge plate (13) and the inclined support (3) are located on the same side of the crossbeam (4).

8. A cantilevered ramp apparatus as claimed in claim 3, wherein, The invention further comprises a patterned steel panel (6) laid on the load-bearing surface of the cantilever frame (1).

9. A cantilevered ramp apparatus as claimed in claim 2, wherein, The side of the cantilever frame (1) not connected with the ladder body (2) is provided with a fence (14).

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