Tensioning device for crane

Abstract

The utility model relates to the technical field of crane equipment, in particular to a tensioning device for a crane, which comprises a base, a transmission structure is arranged on the base, and a tensioning device is arranged above the transmission structure, and is characterized in that the tensioning device comprises a fixed plate arranged on the base, a sliding chute is arranged on one side of the fixed plate, a sliding block is arranged in the sliding chute, and a sliding block is arranged in the sliding chute. A rotating shaft is installed on the front side of the sliding block, the rotating shaft is sleeved with a rotatable pressing wheel, the pressing wheel acts on the transmission structure, a connecting plate is arranged at the bottom of the sliding block, the connecting plate is installed on a movable rod of an electric push rod, and the electric push rod is installed on the base through a supporting plate. By arranging the remote control type electric push rod, a worker can remotely control the electric push rod to push the tensioning device to ascend and descend, and therefore tensioning adjustment of a belt of a transmission structure is achieved. The device is simple and convenient to operate, time-saving, labor-saving, high in efficiency and high in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of crane equipment, in particular to a tensioning device for a crane. Background Art

[0002] A bridge crane is a type of lifting equipment that is horizontally mounted above workshops, warehouses, and material yards to lift materials. The bridge of the bridge crane runs longitudinally along the tracks laid on the elevated platforms on both sides. The bridge crane can make full use of the space under the bridge to lift materials without being hindered by ground equipment. It is the most widely used and largest type of lifting machinery.

[0003] Bridge cranes typically use a transmission mechanism to drive their movement on the bridge. When the transmission belt of the transmission mechanism becomes loose, the crane's movement accuracy on the bridge is reduced, so a tensioning device is required to tighten the transmission mechanism. Currently, most tensioning devices are manually adjustable, with a pressure wheel installed in a bracket. Manually turning a screw moves the pressure wheel up and down within the bracket to tighten the transmission mechanism. This method is not only time-consuming and labor-intensive, but also inefficient, and requires manual labor at high altitudes, making it more dangerous. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a tensioning device for a crane.

[0005] The utility model is realized through the following technical scheme: a tensioning device for a crane, comprising a base, a transmission structure is provided on the base, and a tensioning device is provided above the transmission structure, characterized in that the tensioning device comprises a fixed plate installed on the base, a slide groove is provided on one side of the fixed plate, a slider is provided in the slide groove, a rotating shaft is provided on the front side of the slider, a rotatable pressure wheel is sleeved on the rotating shaft, the pressure wheel acts on the transmission structure, a connecting plate is provided at the bottom of the slider, the connecting plate is installed on the movable rod of the electric push rod, and the electric push rod is installed on the base through a support plate.

[0006] Furthermore, the transmission structure includes a driving wheel and a driven wheel installed on the base, the driving wheel and the driven wheel are connected by a transmission belt, and the pressure wheel acts on the transmission belt.

[0007] Furthermore, the electric push rod is a remote-controlled electric push rod.

[0008] The beneficial effect of the utility model is that the utility model provides a remote-controlled electric push rod so that a worker can remotely control the electric push rod to push the tensioning device up and down, thereby realizing tension adjustment of the transmission structure belt.

[0009] The utility model is simple and convenient to operate, saves time and labor, has high efficiency and strong safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the utility model;

[0011] Figure 2 It is a side view schematic diagram of the utility model;

[0012] Figure 3 This is a schematic diagram of the main view of the utility model;

[0013] Figure 4 for Figure 3 Schematic diagram of the middle AA section;

[0014] Figure 5 It is a rear view schematic diagram of the utility model;

[0015] Figure 6 It is a top view schematic diagram of the utility model;

[0016] In the accompanying drawings, 1 is a base, 2 is a transmission structure, 201 is a driving wheel, 202 is a transmission belt, 203 is a driven wheel, 3 is a tensioning device, 301 is a pressure wheel, 302 is a rotating shaft, 303 is a slider, 304 is a slide groove, 305 is a fixed plate, 4 is a connecting plate, 5 is an electric push rod, and 6 is a support plate. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and beneficial effects of the present invention more clear, the technical solution of the present invention is further described below in conjunction with embodiments.

[0018] like Figures 1 to 6 As shown, the tensioning device 3 of the present invention includes a base 1, a transmission structure 2 is provided on the base 1, and the crane uses the transmission structure 2 to realize its operation on the bridge. A tensioning device 3 is provided above the transmission structure 2. The tensioning device 3 includes a fixing plate 305 installed on the base 1. The fixing plate 305 is installed on the base 1 by bolts and a square hole is provided on the base 1 at the installation location. The fixing plate 305 adopts a ┤-shaped plate. A slide groove 304 is provided on one side of the fixing plate 305. The slide groove 304 is a bar-shaped slide groove 304 hole. A slider 303 is disposed within the chute 304. The slider 303 is an I-shaped slider 303 that can move up and down within the chute 304. A rotating shaft 302 is mounted on the front side of the slider 303. A rotatable pressure roller 301 is mounted on the rotating shaft 302. The pressure roller 301 acts on the transmission structure 2, that is, the pressure roller 301 compresses the transmission belt 202. A connecting plate 4 is disposed at the bottom of the slider 303. The connecting plate 4 is mounted on the movable rod of the electric push rod 5, which is mounted on the base 1 via a support plate 6. The transmission structure 2 includes a driving wheel 201 and a driven wheel 203 mounted on the base 1. The driving wheel 201 and the driven wheel 203 are connected by the transmission belt 202, and the pressure roller 301 acts on the transmission belt 202.

[0019] In order to facilitate the staff to remotely control the electric push rod 5, the electric push rod 5 adopts a remote control electric push rod 5.

[0020] Working process: operate the electric push rod 5. When the movable rod of the electric push rod 5 moves downward, the slider 303 is driven downward by the connecting plate 4. The slider 303 drives the pressure wheel 301 thereon to move downward. The pressure wheel 301 moves downward to press the transmission belt 202, thereby adjusting the tightness of the transmission belt 202. When the movable rod of the electric push rod 5 moves upward, the connecting plate 4 drives the slider 303 to move upward. The slider 303 drives the pressure wheel 301 thereon to move upward. The pressure wheel 301 moves upward to loosen the transmission belt 202 pressed by it.

[0021] Except for the technical features described in the specification, the remaining technical features are known to those skilled in the art.

Claims

1. A tensioning device for a crane, comprising a base (1), a transmission structure (2) being provided on the base (1), and a tensioning device (3) being provided above the transmission structure (2), characterized in that: The tensioning device (3) includes a fixed plate (305) mounted on the base (1), a slide groove (304) is provided on one side of the fixed plate (305), a slider (303) is provided in the slide groove (304), a rotating shaft (302) is provided on the front side of the slider (303), a rotatable pressure wheel (301) is sleeved on the rotating shaft (302), and the pressure wheel (301) acts on the transmission structure (2), a connecting plate (4) is provided at the bottom of the slider (303), and the connecting plate (4) is mounted on the movable rod of the electric push rod (5), and the electric push rod (5) is mounted on the base (1) through the support plate (6).

2. A tensioning device for a crane according to claim 1, characterized in that: The transmission structure (2) comprises a driving wheel (201) and a driven wheel (203) mounted on the base (1); the driving wheel (201) and the driven wheel (203) are connected via a transmission belt (202); and the pressure wheel (301) acts on the transmission belt (202).

3. The tensioning device for a crane according to claim 1, characterized in that: The electric push rod (5) is a remote control electric push rod.

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