Crane gantry structure capable of continuously changing span

Abstract

The utility model relates to the technical field of crane gantries, and discloses a crane gantry structure capable of continuously changing span, which comprises two main beams, a span changing structure is arranged between the two main beams, the span changing structure comprises a plurality of unit beams arranged between the two main beams, and mounting plates are fixed on the top surfaces of the two main beams. Through the arrangement of the span-variable structure, a worker starts the motor, the motor drives the lead screw to rotate, when the lead screw rotates, the two main beams get close to each other or get away from each other through the matching of the threaded sleeves, when the two main beams move, the span of the gantry of the crane is changed, and meanwhile, the interval between the two main beams is changed; a worker can place a proper number of unit beams between the two main beams at intervals, and the clamping blocks and the clamping grooves are connected when the unit beams are placed, so that the supporting strength of the main beams is guaranteed when the span of the portal frame changes, and the span changing effect of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crane portal technical field especially relates to a crane portal structure of continuous cross. BACKGROUND

[0002] Portal crane is a kind of special equipment, from the traditional sense, its structure size is fixed, and the working place is stable, once installation long-term operation in specific area, service life is longer, and the working life is generally more than 20 years. Bridge portal crane is widely used, and plays an important role in economic construction, because the use site is different, portal crane needs to be adjusted to local conditions when using, and the span of portal crane needs to change with the change of site.

[0003] The existing automatic cross-changing portal crane (publication number: CN221543886U) has at least the following disadvantages: although the above-mentioned device moves the telescopic beam by the traveling tire to change the span of the crane portal, the support strength of the main beam decreases when the telescopic beam is extended, which leads to poor cross-changing effect of the structure, and therefore the utility model is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a crane portal structure capable of continuous cross-changing.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A crane portal structure capable of continuous cross-changing includes two main beams, a cross-changing structure is arranged between the two main beams, the cross-changing structure includes a plurality of unit beams arranged between the two main beams, the top surface of each main beam is fixed with a mounting plate, a threaded sleeve is fixed to the top surface of the mounting plate on the left side, a mounting cylinder is fixed to the top surface of the mounting plate on the right side, a lead screw is rotatably arranged in the mounting cylinder, and the lead screw is threadedly connected with the inside of the threaded sleeve.

[0007] As a further scheme of the utility model, one end of the mounting cylinder is fixed with a motor, the output end of the motor penetrates the mounting cylinder and is fixed with one end of the lead screw, the left side of each unit beam and the left end of the main beam on the right side are each provided with a clamping groove, the right side of each unit beam and the right end of the main beam on the left side are each fixed with a clamping block, and the clamping block is slidably arranged in the clamping groove.

[0008] As a further scheme of the utility model, the unit beam and the left side of the left main beam are provided with a fixing groove, the left side of the unit beam is fixed with an inserting plate, the inserting plate and the inside of the fixing groove are slidably inserted, the bottom surface of the unit beam and the main beam are provided with a threaded hole, the bottom surface of the inserting plate is rotatably provided with a bolt, and the bolt is screw-connected with the inside of the threaded hole.

[0009] As a further scheme of the utility model, the right side of the mounting plate is fixed with a limiting plate at one end, and the limiting plate is slidably inserted into the inside of the left side of the mounting plate.

[0010] As a further scheme of the utility model, the two main beams are fixed with two supporting rods at the ends away from each other, and the supporting rods are obliquely arranged.

[0011] As a further scheme of the utility model, the bottom end of the supporting rod is fixed with a universal wheel, and the cross section of the main beam is a H-shaped cross section.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The gantry structure is characterized in that the variable-span structure is arranged, the staff starts the motor, the motor drives the screw rod to rotate, the screw rod is matched with the threaded sleeve when rotating, the two main beams are close to or away from each other, the span of the crane gantry changes when the two main beams move, the interval between the two main beams changes, the staff can put the unit beams into the interval between the two main beams in proper quantity, the clamping block is connected with the clamping groove when the unit beam is put in, so that the support strength of the main beam is ensured when the unit beam changes the span of the gantry, and the variable-span effect of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model provides a kind of crane gantry structure of continuous variable span for the structure schematic diagram of the utility model;

[0015] Figure 2 The utility model provides a kind of crane gantry structure of continuous variable span for the split structure schematic diagram of the utility model;

[0016] Figure 3 The utility model provides a kind of crane gantry structure of continuous variable span for the split structure schematic diagram of the mounting plate of the utility model;

[0017] Figure 4 The utility model provides a kind of crane gantry structure of continuous variable span for the Figure 2 The utility model provides a kind of crane gantry structure of continuous variable span for the enlarged structure schematic diagram of A place in middle.

[0018] In the figure: 1. Main beam; 2. Unit beam; 201. Mounting plate; 202. Threaded sleeve; 203. Mounting cylinder; 204. Screw; 205. Snap-in groove; 206. Snap-in block; 3. Fixing groove; 301. Plug-in plate; 302. Threaded hole; 4. Limiting plate; 5. Support rod; 6. Universal wheel. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] like Figures 1-4 As shown, a crane gantry structure with continuously variable span includes two main beams 1, a variable span structure is arranged between the two main beams 1, the variable span structure includes a plurality of unit beams 2 arranged between the two main beams 1, the top surfaces of the two main beams 1 are fixed with mounting plates 201, the top surface of the left mounting plate 201 is fixed with a threaded sleeve 202, the top surface of the right mounting plate 201 is fixed with a mounting cylinder 203, the internal rotation of the mounting cylinder 203 is provided with a screw rod 204, and the screw rod 204 is connected to the internal thread of the threaded sleeve 202.

[0023] In this embodiment, one end of the mounting cylinder 203 is fixed with a motor, the output end of the motor penetrates the mounting cylinder 203 and is fixed with one end of the lead screw 204, the left side of the plurality of unit beams 2 and the left end of the right side main beam 1 are provided with clamping grooves 205, the right side of the plurality of unit beams 2 and the right end of the left side main beam 1 are fixed with clamping blocks 206, the clamping blocks 206 are slidably arranged in the clamping grooves 205, by the arrangement of the variable span structure, the worker starts the motor, the motor drives the lead screw 204 to rotate, when the lead screw 204 rotates, the two main beams 1 are close to or away from each other through the cooperation of the threaded sleeve 202, when the two main beams 1 move, the span of the crane gantry changes, at the same time, the interval between the two main beams 1 changes, the worker can put the appropriate number of unit beams 2 between the two main beams 1, when the unit beams 2 are put in, the clamping blocks 206 are connected with the clamping grooves 205, so that the unit beams 2 can guarantee the supporting strength of the main beam 1 when the span of the gantry changes, and the variable span effect of the device is improved.

[0024] In this embodiment, the plurality of unit beams 2 and the side of the left side main beam 1 are provided with fixing grooves 3, the left side of the plurality of unit beams 2 is fixed with a plug-in plate 301, the plug-in plate 301 is slidably arranged in the fixing groove 3, the bottom surface of the unit beam 2 and the main beam 1 is provided with a threaded hole 302, the bottom surface of the plug-in plate 301 is rotatably provided with a bolt, the bolt is threadedly connected with the threaded hole 302, when the worker connects the unit beam 2 with the main beam 1 through the clamping block 206 and the clamping groove 205, the plug-in plate 301 is inserted into the fixing groove 3, then the worker fixes the main beam 1 and the plurality of unit beams 2 through the bolt and the threaded hole 302, and the supporting effect of the device is improved.

[0025] In this embodiment, one end of the right side mounting plate 201 is fixed with a limiting plate 4, the limiting plate 4 is slidably arranged in the left side mounting plate 201, when the lead screw 204 rotates in the threaded sleeve 202 to move the two main beams 1, the cooperation of the limiting plate 4 and the mounting plate 201 can make the movement more stable.

[0026] In this embodiment, the ends of the two main beams 1 away from each other are fixed with two support rods 5, the support rods 5 are inclinedly arranged, the support rods 5 can well support the main beam 1.

[0027] In this embodiment, the bottom end of the support rod 5 is fixed with a universal wheel 6, the cross section of the main beam 1 is H-shaped, the universal wheel 6 can facilitate the device to change the span more smoothly.

[0028] Working principle: in use, the worker starts the motor, the motor drives the screw rod 204 to rotate, the screw rod 204 rotates through the cooperation of the threaded sleeve 202, so that the two main beams 1 are close to or away from each other, when the two main beams 1 move, the span of the crane gantry changes, at the same time, the interval between the two main beams 1 changes, the worker can put the appropriate number of unit beams 2 between the two main beams 1, when the unit beams 2 are put in, the clamping block 206 is connected with the clamping groove 205, so that the unit beams 2 can guarantee the supporting strength of the main beam 1 when the span of the gantry changes, when the worker connects the unit beams 2 with the main beam 1 through the clamping block 206 and the clamping groove 205, the plug-in plate 301 is inserted into the fixed groove 3, then the worker fixes the main beam 1 and the unit beams 2 through the bolt and the threaded hole 302, improves the supporting effect of the device, when the screw rod 204 rotates in the threaded sleeve 202 to move the two main beams 1, the cooperation of the limiting plate 4 and the mounting plate 201 can make the movement more stable, the supporting rod 5 can support the main beam 1 well, the universal wheel 6 can make the device move more smoothly when the span changes.

[0029] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A crane gantry structure with continuously variable span, comprising two main beams (1), characterized in that: A variable span structure is provided between the two main beams (1), and the variable span structure comprises a plurality of unit beams (2) provided between the two main beams (1). The top surfaces of the two main beams (1) are both fixed with mounting plates (201), the top surface of the left mounting plate (201) is fixed with a threaded sleeve (202), and the top surface of the right mounting plate (201) is fixed with a mounting cylinder (203), a screw rod (204) is rotatably provided inside the mounting cylinder (203), and the screw rod (204) is connected to the internal thread of the threaded sleeve (202).

2. The crane gantry structure with continuously variable span according to claim 1, characterized in that: One end of the mounting tube (203) is fixed with a motor, and an output end of the motor passes through the mounting tube (203) and is fixed to one end of a screw rod (204). A clamping groove (205) is provided on the left side of a plurality of unit beams (2) and the left end of the main beam (1) on the right side. A clamping block (206) is fixed on the right side of a plurality of unit beams (2) and the right end of the main beam (1) on the left side. The clamping block (206) is arranged to slide inside the clamping groove (205).

3. The crane gantry structure with continuously variable span according to claim 2, characterized in that: A fixing groove (3) is provided on one side of a plurality of the unit beams (2) and the main beam (1) on the left side. A plug-in plate (301) is fixed on the left side of the plurality of unit beams (2). The plug-in plate (301) is slidably inserted into the interior of the fixing groove (3). A threaded hole (302) is provided on the bottom surface of the unit beam (2) and the main beam (1). A bolt is rotatably provided on the bottom surface of the plug-in plate (301). The bolt is threadedly connected to the interior of the threaded hole (302).

4. The crane gantry structure with continuously variable span according to claim 3, characterized in that: A limiting plate (4) is fixed to one end of the mounting plate (201) on the right side, and the limiting plate (4) is slidably inserted into the interior of the mounting plate (201) on the left side.

5. The crane gantry structure with continuously variable span according to claim 4, characterized in that: Two supporting rods (5) are fixed to the ends of the two main beams (1) that are away from each other, and the supporting rods (5) are arranged obliquely.

6. The crane gantry structure with continuously variable span according to claim 5, characterized in that: A universal wheel (6) is fixed to the bottom end of the support rod (5), and the cross section of the main beam (1) is an I-shape.

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