Truss climbing and anti-falling device

Abstract

The utility model discloses a truss climbing anti-falling device belongs to building construction technical field. This truss climbing anti-falling device includes the anti-falling ware assembly, and the anti-falling ware assembly includes: the anti-falling support, is fixed on the inner truss, the anti-falling core axle, both ends are supported on the anti-falling support through the bearing, the wheel that follows, is fixed on the anti-falling core axle through the flat key, and its outer periphery is attached to the limit angle steel and follows the rolling, the limit angle steel is fixed on the outer truss and extends along the vertical, and the outer truss is encased in the inner truss outside, eccentric locking wheel, is empty in the anti-falling core axle, and the end surface recess of its facing the wheel that follows is equipped with the inner ratchet tooth, ratchet pawl, is hinged in the wheel that follows end surface through the ratchet pawl pin shaft, and its free end is connected with the wheel that follows through the tension spring, and leans on the limit pin, and the free end is matched with the inner ratchet tooth. The device can lock the truss rapidly when the security risk appears in the lifting process, and avoids the high-altitude falling accident.

Description

Technical Field

[0001] This utility model relates to a building construction equipment, and more particularly to a truss climbing and fall prevention device, belonging to the field of construction technology. Background Technology

[0002] Construction of tall structures must proceed gradually from the bottom upwards. After the bottom layer of reinforcing steel is tied, the bottom layer of formwork is erected, and then the bottom layer of concrete is poured. After the bottom layer of concrete has cured and reached its strength, the next layer of reinforcing steel is tied, the next layer of formwork is erected, and the next layer of concrete is poured. After the concrete of that layer has cured and reached its strength, the next layer of reinforcing steel is tied, and so on.

[0003] Traditional concrete pouring methods for tall structures typically include formwork flipping, slipform, climbing formwork, cantilever scaffolding, and roller formwork. Formwork flipping involves a cyclical upward flipping of multiple layers of formwork. Because the concrete is statically formed within the formwork, the surface is smooth. Each pour typically reaches a height of 4.5 or 6 meters. Due to the significant lateral pressure of the concrete, tie rods are needed to prevent formwork bursting. During the flipping process, the lower layer of concrete must reach a strength of at least 15 MPa before the lower formwork can be removed. The lower formwork is then lifted to the top, and this process is repeated until construction is complete. The load during this process is usually borne by two trusses, which alternately climb to complete the pouring of the entire tall structure. During truss lifting, if the hydraulic cylinder piston rod or hinge pin breaks, a fall accident will occur. Preventing falls is crucial for ensuring safe construction. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the above and / or prior art, this utility model is proposed.

[0006] The purpose of this utility model is to overcome the problems existing in the prior art and provide a truss climbing anti-fall device that can quickly lock the truss when a safety hazard occurs during the lifting process to avoid a high-altitude fall accident.

[0007] To solve the above technical problems, this utility model provides a truss climbing fall arrest device, including a fall arrestor assembly, the fall arrestor assembly comprising:

[0008] Fall arrestor supports are fixed to the inner truss.

[0009] The anti-fall mandrel is supported at both ends on the anti-fall support by bearings;

[0010] The following wheel is fixed to the anti-fall mandrel by a flat key. Its outer circumference is against the limiting angle steel and rolls with it. The limiting angle steel is fixed to the outer truss and extends vertically. The outer truss is fitted on the outside of the inner truss.

[0011] An eccentric locking wheel is loosely fitted onto the anti-fall mandrel, and its end face facing the trailing wheel has an internal ratchet in a groove.

[0012] The pawl is hinged to the end face of the follower wheel via a pawl pin. Its free end is connected to the follower wheel via a tension spring and abuts against the limit pin. The free end matches the internal ratchet.

[0013] Furthermore, the outer periphery of the following wheel is provided with a polyethylene jacket, which is attached to the limiting angle steel and rolls along with it.

[0014] Furthermore, when the outer truss rises normally, the limiting angle steel drives the following wheel to rotate counterclockwise, while the eccentric locking wheel remains stationary; when the outer truss falls rapidly, the limiting angle steel drives the following wheel to rotate rapidly clockwise, the pawl overcomes the tension of the tension spring and engages with the inner ratchet, driving the eccentric locking wheel to rotate clockwise, so that its larger radius circumference abuts against the limiting angle steel to achieve self-locking.

[0015] Compared with the existing technology, the present invention has achieved the following beneficial effects: 1. Traditional climbing formwork takes 1 hour to climb one floor, and steel bars cannot be tied while the support is raising the formwork; the present invention only takes 6 minutes to climb one floor, which greatly shortens the construction period and greatly improves the construction efficiency.

[0016] 2. It eliminates the need to pre-embed multiple supporting steel columns in the concrete structure, greatly reducing material consumption and construction costs.

[0017] 3. Traditional systems require the support of the entire lifting frame, top platform, and middle platform, resulting in large components such as the top platform, top platform columns, loading beams, and top platform column sleeves, which further increases the weight and manufacturing cost. In contrast, the weight of the entire system is borne only by small hanging brackets and embedded climbing cones, eliminating the need for large components such as the top platform, further reducing material consumption and construction costs.

[0018] 4. The rectangular frame that ensures the corner dimensions of the structure can be welded as a whole on the ground or in the factory without on-site welding, ensuring dimensional accuracy; it can be directly lifted by a lifting gantry on the construction site without interfering with large components or requiring the use of a tower crane;

[0019] 5. Workers can complete tasks such as tying steel bars or fixing formwork within the reach of one person raising their hand, without engaging in any work at height, which greatly improves work efficiency and construction safety. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings are provided for reference and illustration only and are not intended to limit this utility model. Wherein:

[0021] Figure 1 This is a front view of the fall arrestor assembly in this utility model;

[0022] Figure 2 for Figure 1 Top view;

[0023] Figure 3 An elevation view of the fall arrestor assembly mounted on the truss.

[0024] Figure 4 Top view of the fall arrestor assembly mounted on the truss;

[0025] Figure 5 This is a schematic diagram illustrating the working principle of the fall arrestor assembly during fall protection.

[0026] Reference numerals: 1. Fall arrester assembly; 1a. Fall arrester support; 1b. Fall arrester spindle; 1c. Follower wheel; 1c1. Polyethylene outer sleeve; 1d. Pawl; 1d1. Pawl pin; 1d2. Limiting pin; 1d3. Tension spring; 1e. Eccentric locking wheel; 1e1. Internal ratchet; 1f. Protective leaf spring; 1g. Limiting plate;

[0027] 2. Inner truss; 3. Outer truss; 3a. Limiting angle steel. Detailed Implementation

[0028] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0029] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0031] like Figures 1 to 5 As shown, the truss climbing fall arresting device of this utility model includes a fall arresting assembly 1, an inner truss 2, and an outer truss 3. The fall arresting assembly 1 is symmetrically welded to the top side of the inner truss 2 facing the concrete. The fall arresting assembly 1 includes a fall arresting support 1a, a fall arresting spindle 1b, a following wheel 1c, and an eccentric locking wheel 1e. Both ends of the fall arresting spindle 1b are supported by bearings on the upper ends of the fall arresting support 1a. The bottom of the fall arresting support 1a is fixed to the top of the inner truss 2. The following wheel 1c is fixed to the middle section of the fall arresting spindle 1b by a flat key. A polyethylene outer sleeve 1c1 is fitted around the outer circumference of the following wheel 1c. The polyethylene outer sleeve 1c1 abuts against the vertical wall of the limiting angle steel 3a, which is welded to the opposing inner walls of the outer truss 3. When the outer truss 3 moves upward, the polyethylene outer sleeve 1c1 of the following wheel 1c rolls against the surface of the limiting angle steel 3a.

[0032] An eccentric locking wheel 1e is fitted into the middle section of the anti-fall mandrel 1b. The end face of the eccentric locking wheel 1e facing the traveling wheel 1c has a groove, and the inner circumferential wall of the groove has an internal ratchet 1e1. A pawl 1d is hinged to the end face of the traveling wheel 1c facing the eccentric locking wheel 1e. The root of the pawl 1d is hinged to the end face of the traveling wheel 1c via a pawl pin 1d1. The free end of the pawl 1d matches the internal ratchet 1e1 and is connected to a tension spring 1d3. The other end of the tension spring 1d3 is fixed to the end face of the traveling wheel 1c. The side of the pawl 1d near its free end abuts against the limiting pin 1d2 to counteract the tension of the tension spring 1d3.

[0033] The smaller radius of the eccentric locking wheel 1e faces the limiting angle steel 3a with a gap between them. The larger radius of the eccentric locking wheel 1e is embedded in the opening of the protective leaf spring 1f. The middle part of the protective leaf spring 1f is fixed on the limiting plate 1g, and the lower end of the limiting plate 1g is fixed on the anti-fall support 1a.

[0034] When the outer truss 3 is lifted upward normally, the limiting angle steel 3a drives the following wheel 1c to rotate slowly counterclockwise, and the eccentric locking wheel 1e is loosely fitted in the anti-fall mandrel 1b and does not move.

[0035] If the outer truss 3 falls rapidly during the lifting process, the limiting angle steel 3a will cause the following wheel 1c to rotate rapidly clockwise, so that the free end of the pawl 1d will overcome the tension of the tension spring 1d3 and engage in the inner ratchet 1e1 of the eccentric locking wheel 1e. This will cause the eccentric locking wheel 1e to rotate rapidly clockwise, resulting in the larger radius of the eccentric locking wheel 1e abutting against the limiting angle steel 3a to create a self-locking mechanism, thereby preventing the outer truss 3 from falling further. The outer circumference of the eccentric locking wheel 1e is knurled to increase its friction.

[0036] After the fault is cleared, the hydraulic cylinder lifts the outer truss 3 upwards, causing the eccentric locking wheel 1e to rotate counterclockwise and unlock, returning to the initial state.

[0037] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A truss climbing fall arrest device, comprising a fall arrestor assembly (1), characterized in that, The fall arrestor assembly (1) includes: Fall arrestor (1a) is fixed to the inner truss (2); The anti-fall mandrel (1b) is supported at both ends on the anti-fall support (1a) by bearings; The following wheel (1c) is fixed to the anti-fall mandrel (1b) by a flat key. Its outer periphery is attached to the limiting angle steel (3a) and rolls with it. The limiting angle steel (3a) is fixed to the outer truss (3) and extends vertically. The outer truss (3) is fitted on the outside of the inner truss (2). An eccentric locking wheel (1e) is loosely fitted onto the anti-fall spindle (1b), and an internal ratchet (1e1) is provided in the groove on its end face facing the follower wheel (1c). The pawl (1d) is hinged to the end face of the follower wheel (1c) via a pawl pin (1d1). Its free end is connected to the follower wheel (1c) via a tension spring (1d3) and abuts against the limit pin (1d2). The free end is matched with the inner ratchet (1e1).

2. The truss climbing fall arrestor according to claim 1, characterized in that: The outer periphery of the following wheel (1c) is provided with a polyethylene jacket (1c1), which is attached to the limiting angle steel (3a) and rolls along with it.

3. The truss climbing fall arrestor according to claim 1 or 2, characterized in that: When the outer truss (3) rises normally, the limiting angle steel (3a) drives the following wheel (1c) to rotate counterclockwise, while the eccentric locking wheel (1e) remains stationary. When the outer truss (3) falls rapidly, the limiting angle steel (3a) drives the following wheel (1c) to rotate clockwise rapidly. The pawl (1d) overcomes the tension of the tension spring (1d3) and embeds into the inner ratchet (1e1), causing the eccentric locking wheel (1e) to rotate clockwise, so that its larger radius circumference abuts against the limiting angle steel (3a) to achieve self-locking.

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