Fixture for hoisting box culvert

Abstract

The utility model relates to the technical field of box culvert lifting appliances, in particular to a clamp for lifting a box culvert, which comprises a lifting frame, an opening piece lifting ring and an arc piece lifting ring are arranged on the upper side of the lifting frame, a lifting beam and a middle connecting beam are arranged below the lifting frame, and a hook seat and a guide frame are arranged on the upper side of the middle connecting beam. A limiting hook matched with the hook seat is arranged on the lower side of the hanging bracket; suspension arms are hinged to the two sides of the two ends of the suspension frame, a first suspension leg base and a second suspension leg base are arranged at the two ends of the suspension beam respectively, a middle sliding saddle is arranged in the middle of the suspension beam, the suspension arms on the two sides are hinged to the first suspension leg base and the middle sliding saddle respectively, and a connecting rod is arranged between the middle sliding saddle and the second suspension leg base. Lifting legs are arranged on the lower sides of the first lifting leg seat and the second lifting leg seat; the box culvert clamp is provided with the opening piece lifting ring and the arc piece lifting ring, lifting gravity center changes of opening pieces and arc pieces can be conveniently adapted, meanwhile, the counterweight hammer is arranged, the problem that the lifting rings are offset is solved, and it is ensured that the clamp stably lifts a box culvert.

Description

Technical Field

[0001] This utility model relates to the field of box culvert lifting equipment technology, and in particular to a box culvert lifting clamp. Background Technology

[0002] A box culvert is a culvert constructed with reinforced concrete box-shaped pipe sections. It consists of one or more square or rectangular cross-sections, typically made of reinforced concrete or masonry. During transport, box culverts are usually hoisted, requiring specialized lifting equipment. Due to their large size and weight, the hoisting of box culverts is a significant risk factor; even slight negligence can lead to serious accidents. Traditional hoisting operations for box culverts use slings, which are not only cumbersome but also prone to cutting the slings due to the sharp edges of the box culvert, causing further accidents.

[0003] In the existing technology, the application scope of special lifting tools is limited. In order to ensure reliable positioning and clamping and stable center of gravity, they are only applicable to box culverts of a certain structure, which limits their use. Even if they can be clamped, forcibly lifting box culverts of different specifications will cause the center of gravity to shift, and there is a risk of falling during the lifting process, which poses certain safety hazards. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a clamp for lifting box culverts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A box culvert lifting clamp includes a lifting frame. The upper side of the lifting frame is provided with a gap-shaped lifting ring and an arc-shaped lifting ring. The lower side of the lifting frame is provided with a lifting beam and a central connecting beam. There are two sets of lifting beams connected by the central connecting beam. The upper side of the central connecting beam is provided with a hook seat and a guide frame. The lower side of the lifting frame is provided with a limiting hook adapted to the hook seat.

[0007] Both ends of the hanger are hinged to the two sides of the hanger. The two ends of the hanger beam are respectively provided with a first hanger leg seat and a second hanger leg seat. The middle of the hanger beam is provided with a middle sliding saddle. The two sides of the hanger arm are respectively hinged to the first hanger leg seat and the middle sliding saddle. A connecting rod is provided between the middle sliding saddle and the second hanger leg seat. The lower side of the first hanger leg seat and the second hanger leg seat are provided with hanger legs.

[0008] Preferably, the opening-shaped lifting ring and the arc-shaped lifting ring are respectively disposed on both sides of the limiting hook, and the limiting hook, the opening-shaped lifting ring and the arc-shaped lifting ring are all hinged to the hanger; the limiting hook has at least two hook openings, and the limiting hook is detachably connected to the hook seat.

[0009] Preferably, the hanging beam and the middle connecting beam are arranged in a frame in the shape of a Chinese character 'Ri' or 'Mu', the lower end of the guiding frame is fixedly connected to the middle connecting beam, and a guiding hole adapted to the guiding frame is formed on the hanging frame.

[0010] Preferably, sliding pins are provided at both ends of the hanging beam, long strip holes adapted to the sliding pins are formed on the first hanging leg seat and the second hanging leg seat, both the first hanging leg seat and the second hanging leg seat are slidably connected to the hanging beam, and the middle sliding saddle is slidably connected to the hanging beam.

[0011] Preferably, a sling leg is provided at the lower side of the hanging beam near the hanging leg, and an adjusting device is provided between the sling leg and the hanging beam;

[0012] An alignment handle is provided at the lower end of the hanging leg, a seat cushion is provided at the lower side of the sling leg, and a side cushion is provided at one side of the middle part of the hanging leg.

[0013] Preferably, a hanging frame counterweight is provided on one side of the hanging frame, a main counterweight is provided at one end of the hanging beam close to the first hanging leg seat, a guardrail is provided outside the main counterweight, and a ladder is provided on one side of the guardrail.

[0014] The beneficial effects of the present utility model are as follows:

[0015] Compared with the prior art, the present utility model is provided with a box culvert sub-component hanging ring and an arc-shaped component hanging ring, which are convenient for adapting to the change of the center of gravity during the lifting of the box culvert sub-component and the arc-shaped component. At the same time, a counterweight is provided to overcome the problem of the offset of the hanging ring, ensuring the stable lifting of the box culvert by the fixture. The hanging leg seat is pulled by the middle sliding saddle to ensure the reliability of clamping and improve the applicability of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Fig. 1 FIG. 1 is a front view structural schematic diagram of a box culvert lifting fixture proposed by the present utility model;

[0017] Fig. 2 FIG. 2 is a right view structural schematic diagram of a box culvert lifting fixture proposed by the present utility model;

[0018] Fig. 3 FIG. 3 is a three-dimensional structural schematic diagram of a box culvert lifting fixture proposed by the present utility model.

[0019] In the figure: 1, hanging beam; 101, sliding pin; 2, hanging leg; 3, sling leg; 4, middle sliding saddle; 5, hanging arm; 6, hook seat; 7, limit hook; 8, hanging frame; 9, box culvert sub-component hanging ring; 10, arc-shaped component hanging ring; 11, hanging frame counterweight; 12, middle connecting beam; 121, guiding frame; 13, hook swing rod; 14, guardrail; 15, main counterweight; 16, first hanging leg seat; 17, ladder; 18, alignment handle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0021] Referring to Figs. 1-3 , a box culvert lifting fixture includes a hanging frame 8. On the upper side of the hanging frame 8, there are a spigot lifting ring 9 and an arc-shaped lifting ring 10. By switching the lifting rings, the spigot and the arc-shaped member are respectively lifted. Below the hanging frame 8, there are a lifting beam 1 and a middle connecting beam 12. There are two groups of lifting beams 1, and they are connected by the middle connecting beam 12. The lifting beam 1 and the middle connecting beam 12 are arranged in a "day" - shaped or "eye" - shaped frame to serve as a bearing base to support the entire fixture;

[0022] On the upper side of the middle connecting beam 12, there are a hook seat 6 and a guide frame 121. There are two groups of guide frames 121, symmetrically arranged on both sides of the hook seat 6. The lower end of the guide frame 121 is fixedly connected to the middle connecting beam 12. A guide hole adapted to the guide frame 121 is opened on the hanging frame 8. The guide frame 121 extends into the guide hole and has a sliding contact therebetween;

[0023] On the lower side of the hanging frame 8, there is a limit hook 7 adapted to the hook seat 6. On one side of the limit hook 7, there is a hook swing rod 13 for controlling the limit hook 7. At least two hook openings are opened on the limit hook 7. The limit hook 7 and the hook seat 6 are detachably connected. The spigot lifting ring 9 and the arc-shaped lifting ring 10 are respectively arranged on both sides of the limit hook 7. The limit hook 7, the spigot lifting ring 9 and the arc-shaped lifting ring 10 are all hinged to the hanging frame 8;

[0024] Both ends of the hanger 8 are hinged to two sides of the hanger arm 5, which are arranged in a V-shape. The two ends of the hanger beam 1 are respectively provided with a first hanger leg seat 16 and a second hanger leg seat. At least two sliding pins 101 are provided at both ends of the hanger beam 1, and they are staggered. The first hanger leg seat 16 and the second hanger leg seat have elongated holes adapted to the sliding pins 101, and the sliding pins 101 slide in contact with the elongated holes. Both the first hanger leg seat 16 and the second hanger leg seat are slidably connected to the hanger beam 1, and the sliding range is limited by the sliding pins 101. A central sliding saddle 4 is provided in the middle of the hanger beam 1, and the central sliding saddle 4 is slidably connected to the hanger beam 1. The two sides of the hanger arm 5 are respectively... Hinged to the first leg seat 16 and the middle sliding saddle 4, the first leg seat 16 and the middle sliding saddle 4 are moved by the boom 5. A connecting rod is provided between the middle sliding saddle 4 and the second leg seat to drive the second leg seat to move. Legs 2 are provided on the lower side of the first leg seat 16 and the second leg seat to support the bottom of the box culvert and clamp it. A lifting leg 3 is provided on the lower side of the lifting beam 1 near the leg 2. The lifting leg 3 presses against the top of the box culvert and works with the leg 2 to clamp the box culvert. An adjustment device is provided between the lifting leg 3 and the lifting beam 1. The adjustment device uses a pin or bolt to adjust the height of the lifting leg 3 and then lock it in place. It is used to adapt to different models of box culverts.

[0025] The lower end of the lifting leg 2 is equipped with a centering handle 18, which makes it convenient for construction personnel to align the position of the lifting leg 2 and fasten it to the bottom of the precast box culvert component. The lower side of the lifting leg 3 is equipped with a seat pad, and the middle side of the lifting leg 2 is equipped with a side pad. The seat pad and side pad are made of nylon board and polyurethane elastic pad, and are ensured to be replaced regularly.

[0026] A counterweight 11 is provided on one side of the gantry 8, and a main counterweight 15 is provided at the end of the lifting beam 1 near the first lifting leg seat 16. This is used to counterweight the box culvert during the lifting process to prevent tilting. A guardrail 14 is provided on the outside of the main counterweight 15, and a ladder 17 is provided on one side of the guardrail 14 to facilitate the operation of construction personnel. Alignment markers can also be installed on the lifting beam 1 or the intermediate connecting beam 12. The alignment markers are aligned with the middle assembly connection holes of the box culvert to facilitate the alignment of the clamps.

[0027] In this embodiment:

[0028] The clamps in this solution are used as field lifting tools for storing and transporting precast box culvert components. They cannot be used for demolding components. The spacing between box culverts in the storage area must not be less than 600mm to avoid affecting equipment operation.

[0029] Operation of hoisting curved parts: The operator uses the ladder 17 to stand on the main counterweight 15 as an operating platform, operates the crane hook to hook the lifting ring 10 of the curved part, and uses the alignment handle 18 and alignment benchmark to align the clamp onto the curved part, aligning the front edge of the outrigger with the top surface of the box culvert. The hook swing arm 13 is then opened with the fork, the crane hook rises, the lifting leg 2 moves inward, hooks the box culvert, and is then lifted.

[0030] When lifting components, operators must leave ladder 17 and stay away from the components; no one is allowed to stand within 5 meters of the components during lifting.

[0031] Operation of hoisting the opening component: The operation process is basically the same as that of the curved component, the difference is: after the lifting leg 2 moves inward to hook the bottom of the opening component, the crane hook drops to change the lifting ring, and the opening component is lifted with the lifting ring.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A box culvert lifting clamp, comprising a lifting frame (8), characterized in that, On the upper side of the hanger (8), there are a split-piece lifting ring (9) and an arc-piece lifting ring (10). Below the hanger (8), there are a hanging beam (1) and a middle connecting beam (12). There are two groups of the hanging beam (1), which are connected by the middle connecting beam (12). On the upper side of the middle connecting beam (12), there are a hook seat (6) and a guiding frame (121). On the lower side of the hanger (8), there is a limit hook (7) adapted to the hook seat (6). On both sides of the two ends of the hanger (8), there are articulated hanging arms (5). At both ends of the hanging beam (1), there are a first leg seat (16) and a second leg seat respectively. In the middle of the hanging beam (1), there is a middle saddle (4). The two hanging arms (5) on both sides are respectively articulated with the first leg seat (16) and the middle saddle (4). There is a connecting rod between the middle saddle (4) and the second leg seat. Under the first leg seat (16) and the second leg seat, there are legs (2).

2. The box culvert hoisting clamp according to claim 1, characterized in that, The split-piece lifting ring (9) and the arc-piece lifting ring (10) are respectively arranged on both sides of the limit hook (7). The limit hook (7), the split-piece lifting ring (9) and the arc-piece lifting ring (10) are all articulated with the hanger (8). There are at least two hook openings on the limit hook (7). The limit hook (7) is detachably connected with the hook seat (6).

3. The box culvert hoisting clamp according to claim 1, characterized in that, The hanging beam (1) and the middle connecting beam (12) are arranged in a frame in the shape of a Chinese character 'Ri' or 'Mu'. The lower end of the guiding frame (121) is fixedly connected with the middle connecting beam (12). On the hanger (8), there is a guiding hole adapted to the guiding frame (121).

4. A box culvert hoisting clamp according to claim 3, characterized in that, At both ends of the hanging beam (1), there are sliding pins (101). On the first leg seat (16) and the second leg seat, there are long slots adapted to the sliding pins (1). The first leg seat (16) and the second leg seat are both slidably connected with the hanging beam (1). The middle saddle (4) is slidably connected with the hanging beam (1).

5. A box culvert hoisting clamp according to claim 1, characterized in that, Near the leg (2) on the lower side of the hanging beam (1), there is a spreader support leg (3). Between the spreader support leg (3) and the hanging beam (1), there is an adjusting device. At the lower end of the leg (2), there is an alignment handle (18). On the lower side of the spreader support leg (3), there is a seat cushion. On one side of the middle of the leg (2), there is a side cushion.

6. A box culvert hoisting clamp according to claim 1, characterized in that, On one side of the hanger (8), there is a hanger counterweight (11). Near one end of the first leg seat (16) of the hanging beam (1), there is a main counterweight (15). Outside the main counterweight (15), there is a guardrail (14). On one side of the guardrail (14), there is a ladder (17).

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