CN212743844U - Combined steel ladder stand for manual hole digging pile construction - Google Patents

Abstract

The utility model discloses a combined steel ladder stand for manual hole digging pile construction, which comprises a top ladder and a unit ladder; the top ladder comprises a ladder body and a U-shaped hook; the unit ladder comprises a ladder body, a U-shaped hook and two connecting hooks, wherein the two connecting hooks are arranged in the middle of the top end of the ladder body; the device also comprises hook rings uniformly arranged along the protective wall of the bored pile, and an inner side rod of the U-shaped hook is inserted into the hook rings for fixing; the hole digging pile is characterized by further comprising a balancing weight and a Z-shaped bearing rod, wherein the balancing weight and the Z-shaped bearing rod are arranged outside the hole digging pile, the bearing rod stretches into the hole digging pile, a hook ring is arranged at the tail end of the bearing rod, and a U-shaped hook at the upper end of the top ladder is connected with the top ladder and the balancing weight through the hook ring at the tail end of the bearing rod. The utility model has the advantages of light structure, high repeated utilization rate, and strong universality, and the length can be continuously lengthened along with the depth of the pile hole; meanwhile, the ladder body is lifted away from the protective wall through the U-shaped hook, so that the phenomenon of step empty caused by too short distance between the ladder steps and the protective wall is effectively avoided, and a great effect is realized on the construction safety of constructors.

Description

Combined steel ladder stand for manual hole digging pile construction

Technical Field

The utility model relates to a bored pile construction auxiliary device field especially relates to a combination formula steel cat ladder for construction of artifical bored pile.

Background

At present, mountain highways in China are in the construction peak, bridge engineering is an important component for the construction of the mountain highways, and the landform and the terrain of the mountain bridge pile foundation are steep and cannot be constructed mechanically, so that manual hole digging pile construction is mostly adopted. In the process of manually excavating the hole digging piles, along with the progress of the construction process, the hole digging piles are excavated deeper and deeper; after reaching a certain depth, a ladder stand for the operator to go up and down needs to be installed.

At present, the cat ladder that is used for operation personnel about the manual hole digging pile has two kinds: one is a flexible ladder stand, namely a soft ladder stand, which is formed by binding a rope and a stick. The soft ladder stand is generally directly placed in the hole and extends into the bottom of the hole along the protective wall, so that no gap exists between the ladder stand step and the protective wall, and due to the self structure of the soft ladder stand, a person can easily shake left and right in the up-and-down process to cause potential safety hazards; the other type is a rigid ladder stand, namely a hard ladder stand, which is formed by welding steel bars and usually exists in an integral form. The ladder stand for the up-down bored pile of the operator is manufactured on site, and the welder welds the ladder stand into a shape by using steel bars and fixes the ladder stand on the steel bars implanted in the protective wall. With the excavation process, the hole digging pile is dug to a depth downwards, and a welder is required to weld a section of ladder downwards; after the excavation of the hole digging pile is finished, a special person is needed to cut off and take down the ladder, so that time and labor are wasted, and labor cost is wasted; the ladder stand can be used only once and cannot be reused, so that materials and construction cost are wasted; simultaneously, when the cat ladder needs to be lengthened at every turn, all need special constructor to go down to the cat ladder bottom and weld, also very waste time from the efficiency, drag long construction period, influence the construction progress.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the existing ladder stand is in the excavation process of the bored pile, no gap exists between the ladder stand mark time and the dado, the ladder stand is easy to cause to mark empty and to weld the ladder stand downwards through manpower along with the deepening of the bored pile, and the ladder stand can only be used once and has low repeated utilization rate.

In order to solve the technical problem, the utility model provides a combined steel ladder stand for manual hole digging pile construction, which comprises a vertically arranged top ladder and at least one vertically arranged unit ladder connected below the top ladder; the top ladder comprises a ladder body and U-shaped hooks with downward openings, wherein the U-shaped hooks are arranged at the left side and the right side of the upper end and the lower end of the ladder body; the unit ladder comprises a ladder body, U-shaped hooks with downward openings, and two connecting hooks, wherein the U-shaped hooks are arranged on the left side and the right side of the lower end of the ladder body; the top ladder and the unit ladder are inserted into the hook rings for fixing through the inner side rods of the U-shaped hooks at the lower ends; the hole digging device is characterized by further comprising a balancing weight arranged outside the hole opening of the hole digging pile, the balancing weight is provided with a stepped bayonet matched with the edge shape of the hole opening of the hole digging pile, a Z-shaped bearing rod is further arranged in the balancing weight, the bearing rod stretches into the hole opening of the hole digging pile, a hook ring is arranged at the tail end of the bearing rod, and a U-shaped hook at the upper end of the top ladder is connected with the top ladder and the balancing weight through the hook ring at the tail end of the bearing rod.

Particularly, the outer sides of the top ladder and the unit ladders are respectively provided with horizontal protective rings which are uniformly distributed along the vertical direction, and the ladder further comprises reinforcing rods which are fixedly connected with each protective ring.

In particular, the width of the U-shaped hook is more than 10 cm.

The utility model has the advantages that: the novel pile hole structure is light in structure, high in repeated utilization rate, capable of being continuously lengthened along with the depth of a pile hole, and strong in universality; simultaneously through U-shaped couple with the ladder body top from the dado for there is certain distance between marking time and the dado, effectively avoided because the ladder step is too near with the dado between the distance and step empty phenomenon, played great effect to constructor's construction safety.

Drawings

Fig. 1 is a schematic view of the device of the present invention in use.

Fig. 2 is a schematic view of the top ladder structure.

Fig. 3 is a schematic view of a unit ladder structure.

Wherein, the top ladder-1; a U-shaped hook-11; a unit ladder-2; a connecting hook-21; a protective wall-3; a shackle-31; a counterweight-4; a bayonet-41; a bearing bar-42; a horizontal guard ring-5; a reinforcing rod-6.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

A combined steel ladder stand for manual hole digging pile construction comprises a vertically arranged top ladder 1 and at least one vertically arranged unit ladder 2 connected below the top ladder 1; the top ladder 1 comprises a ladder body and U-shaped hooks 11 with downward openings, wherein the U-shaped hooks 11 are arranged at the left side and the right side of the upper end and the lower end of the ladder body, and the top ladder 1 is positioned in the openings of the U-shaped hooks 11 and is fixedly connected with the inner surfaces of outer side rods of the U-shaped hooks 11; the unit ladder 2 comprises a U-shaped hook 11 with a downward opening, wherein the ladder body is arranged at the left side and the right side of the lower end of the ladder body, and two connecting hooks 21 arranged in the middle of the top end of the ladder body; the top ladder 1 and the unit ladder 2 are inserted into the hook ring 31 through an inner side rod of the U-shaped hook 11 at the lower end to be fixed; the hole digging device is characterized by further comprising a balancing weight 4 arranged outside the hole opening of the hole digging pile, the balancing weight 4 is provided with a stepped bayonet 41 matched with the external shape of the hole opening of the hole digging pile, a Z-shaped bearing rod 42 is further arranged in the balancing weight 4, the bearing rod 42 extends into the hole opening of the hole digging pile, a hook ring 31 is arranged at the tail end of the bearing rod 42, and a U-shaped hook 11 at the upper end of the top ladder 1 is connected with the top ladder 1 and the balancing weight 4 through the hook ring 31 at the tail end of the bearing rod 42.

As a preferred embodiment, the outer sides of the top ladder 1 and the unit ladder 2 are respectively provided with circular horizontal protective rings 5 which are uniformly distributed along the vertical direction, and the outer side of the top ladder further comprises a reinforcing rod 6 which is fixedly connected with each horizontal protective ring 5; play the current effect of protection constructor through horizontal guard ring 5, increase the anti deformability of horizontal guard ring 5 through stiffener 6.

As a preferred embodiment, the width of the U-shaped hook 11 is greater than 10 cm; the ladder body is supported away from the protective wall 3 through the U-shaped hook 11, so that a certain distance exists between the step and the protective wall 3, and the step empty phenomenon caused by the too short distance between the step and the protective wall 3 is effectively avoided.

The ladder climbing device is manufactured into standard sections of 2m, 1m and 0.5m, and different extension lengths are selected according to the depth of a pile hole; the balancing weight 4 is fixed outside the pile hole opening through a step-shaped bayonet 41 and is made of phi 32 round steel, and the blanking length is 4.5 m; the hook ring 31 pre-embedded in the protective wall 3 is made of phi 20 round steel, and the blanking length of a single hook ring 31 is 0.5 m; the U-shaped hook 11 and the connecting hook 21 are made of phi 25 round steel, and the blanking length of a single hook is 0.7 m.

The utility model discloses the application method of device does: firstly, during the construction of a hole-digging pile locking opening, a concrete foundation is adopted as a balancing weight 4 at one side of a locking hole, and a bearing rod 42 is embedded in the balancing weight 4; when the excavation depth of the pile foundation exceeds 1m, a ladder climbing device is installed: the hoisting ladder in the hole utilizes a small hoisting tool for manual hole digging pile slag tapping to stretch a hook ring 31 at the tail end of a bearing rod 42 pre-embedded in a balancing weight 4 into the aperture projection range, a U-shaped hook 11 at the upper end of a top ladder 1 is fixed through the hook ring 31, and 2 hook rings 31 at the same horizontal height are pre-embedded at intervals of 1m in a hole digging pile protective wall 3 for fixing the U-shaped hook 11 at the bottom end; when the ladder needs to be lengthened, the connecting hook 21 at the top of the unit ladder 2 is hung at the bottom step part of the top ladder 1, and the U-shaped hook 11 at the bottom of the unit ladder 2 is inserted into the hook ring 31 on the protective wall 3.

Claims (3)

1. A combined steel ladder stand for manual hole digging pile construction is characterized by comprising a vertically arranged top ladder (1) and at least one vertically arranged unit ladder (2) connected below the top ladder (1); the top ladder (1) comprises a ladder body and U-shaped hooks (11) with downward openings, wherein the U-shaped hooks (11) are arranged at the left side and the right side of the upper end and the lower end of the ladder body, and the top ladder (1) is positioned in the openings of the U-shaped hooks (11) and is fixedly connected with the inner surfaces of outer side rods of the U-shaped hooks (11); the unit ladder (2) comprises a ladder body, U-shaped hooks (11) with downward openings, and two connecting hooks (21), wherein the U-shaped hooks (11) are arranged on the left side and the right side of the lower end of the ladder body; the top ladder (1) and the unit ladder (2) are inserted into the hook ring (31) through an inner side rod of a U-shaped hook (11) at the lower end to be fixed; the hole digging pile is characterized by further comprising a balancing weight (4) arranged outside the hole digging pile hole, wherein the balancing weight (4) is provided with a stepped bayonet (41) matched with the external shape of the hole digging pile hole, a Z-shaped bearing rod (42) is further arranged in the balancing weight (4), the bearing rod (42) stretches into the hole digging pile hole and is provided with a hook ring (31) at the tail end, and a U-shaped hook (11) at the upper end of the top ladder (1) is connected with the top ladder (1) and the balancing weight (4) through the hook ring (31) at the tail end of the bearing rod (42).

2. The combined steel ladder stand for the construction of the manual bored pile according to claim 1, wherein the top ladder (1) and the unit ladder (2) are provided at the outer sides thereof with circular horizontal guard rings (5) uniformly arranged in the vertical direction, and further comprising reinforcing rods (6) fixedly connected to each horizontal guard ring (5).

3. A modular steel ladder for manual bored pile construction according to claim 1, wherein the width of the U-shaped hanger (11) is more than 10 cm.

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