Auxiliary device for bridge crane installation and bridge crane installation method

Abstract

This invention relates to an auxiliary device for installing a bridge crane, applied to the drive shaft of a drive motor. It includes a cylindrical pin clamp, a regular polygonal outer operating hand ring, and connecting rods. The outer operating hand ring is positioned outside the pin clamp. The pin clamp comprises two symmetrical half-clamps, and the outer operating hand ring comprises two half-operating rings. Each half-operating ring is fixed to the side of one half-clamp via multiple connecting rods. Both ends of the half-clamps have threaded holes for fixing. The fixing portions of the two half-clamps are aligned, and fixing bolts pass through the fixing portions of the two half-clamps and are threadedly connected to fixing nuts, thus fixing the two half-clamps to the outside of the drive motor's drive shaft. The two half-operating rings form the outer operating hand ring. This invention also relates to a bridge crane installation method. By using the auxiliary device to rotate the drive shaft of the drive motor, the installed portion moves on the crane track, reducing the workload of installation personnel and improving installation efficiency.

Description

Technical Field

[0001] This invention relates to installation tools, and more specifically, to an auxiliary device for installing a bridge crane and a method for installing a bridge crane. Background Technology

[0002] In steel plants, overhead cranes (also known as bridge cranes) are generally used for hoisting objects. Overhead cranes are huge and heavy. When installing an overhead crane on the roof of a plant, the individual components are usually installed separately and then connected as a whole. A bridge crane typically consists of two main beams, two end beams, trolley rails, platform guardrails, a cab, and a crane trolley. During installation, the two end beams are first hoisted onto the crane rails and connected to them. Then, the first main beam is hoisted between the two crane rails, and the two end beams are connected to the first main beam. Next, the second main beam is hoisted between the two crane rails, maintaining a certain distance from the first main beam and the two end beams. This is because it's not possible to directly hoist the second main beam between the two end beams and connect it directly. Instead, the second main beam is first hoisted to a position a certain distance from the end beams, and then its two ends are connected to the end beams one by one. During this process, the distance between the second main beam and the end beams can only be adjusted manually. Since a single main beam weighs tens of tons, manual adjustment can only be achieved with the assistance of jacks, hoists, and other tools, as the bridge crane's motor is kept off during installation to prevent accidental start-up and potential injury. However, adjusting the distance between the second main beam and the first main beam, as well as the end beams on both sides, requires multiple fine adjustments, which is extremely labor-intensive for the operators, consumes a lot of time, and poses safety hazards during the adjustment process. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide an auxiliary device and a method for installing a bridge crane. The auxiliary device rotates the drive shaft of the drive motor, causing the installed parts to move on the crane track, thereby reducing the workload of installation personnel and improving installation efficiency.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0005] An auxiliary device for installing a bridge crane, applied to the drive shaft of a drive motor, includes a cylindrical pin clamp, a regular polygonal outer ring operating hand ring, and a connecting rod, wherein the outer ring operating hand ring is disposed outside the pin clamp;

[0006] The pin clamp includes two symmetrical half clamps, and the outer ring operating hand ring includes two half operating rings. Each half operating ring is fixedly set on the side of a half clamp by multiple connecting rods. The two ends of the half clamp are provided with fixing parts with threaded holes facing outward. The fixing parts at both ends of the two half clamps are aligned accordingly. The fixing bolt passes through the fixing parts of the two half clamps and is threadedly connected to the fixing nut, fixing the two half clamps to the outside of the drive shaft of the drive motor, and the two half operating rings form the outer ring operating hand ring.

[0007] In one embodiment, the inner wall of the half-clamp is provided with a first anti-slip layer, which is a rubber layer. When the two half-clamps are connected to form a pin clamp, pressure is applied to the drive shaft to tighten it. The function of the first anti-slip layer is to increase the friction between the pin clamp and the drive shaft. Secondly, the first protective layer also serves to protect the drive shaft.

[0008] In one embodiment, the semi-operating ring is provided with a second anti-slip layer to prevent the hand from slipping during operation.

[0009] In one embodiment, the outer operating wristband is a regular octagon, and the two half-operating rings are symmetrically structured.

[0010] In one embodiment, the connecting rod has external threaded surfaces at both ends, the inner wall of the semi-operating ring has multiple first threaded connection portions, and the outer surface of the semi-clamp has multiple second threaded connection portions that mate with the first threaded connection portions. One end of the connecting rod is threadedly connected to the first threaded connection portion of the semi-operating ring, and the other end is threadedly connected to the second threaded connection portion of the semi-clamp. The length of the connecting rod directly affects the operator's effort; a longer connecting rod requires less effort. However, due to the location of the drive motor, selecting a connecting rod of appropriate length ensures that the outer operating ring can be rotated normally while achieving maximum effort reduction.

[0011] In one embodiment, the connecting rod is a telescopic rod, with rotatable threaded joints at both ends, and each threaded joint has an external threaded surface. The length of the connecting rod can be directly adjusted. To ensure normal connection with the semi-operating ring and semi-clamp after the length of the connecting rod changes, rotatable threaded joints are provided at both ends of the connecting rod. By adjusting the rotation angle of the threaded joints, the threaded joints at both ends of the connecting rod are respectively threadedly connected to the second threaded joint of the semi-clamp and the first threaded joint of the semi-operating ring.

[0012] A method for installing a bridge crane, the specific steps of which are as follows:

[0013] Place the two half clamps on the drive motor transmission part and fix the two half clamps with fixing bolts and fixing nuts. The two half clamps press against the drive shaft. The outer sides of the two half clamps are fixedly connected to the two half operating rings through connecting rods. The two half operating rings form the outer ring operating hand ring.

[0014] First, the two end beams are hoisted to the crane tracks on both sides of the top of the factory building for installation. Then, the first main beam is hoisted between the two end beams. The first main beam is fixedly connected to the two end beams with bolts to form a pre-installation structure.

[0015] The crane trolley is lifted onto the first main beam, and then the second main beam is lifted. The second main beam is close to the first main beam and the two end beams. The outer ring operating hand ring is rotated to drive the drive motor's transmission shaft to rotate, thereby driving the pre-installed structure to move towards the second main beam on the crane tracks on both sides. The second main beam is then connected to the two end beams respectively. Finally, the crane trolley is placed on the trolley tracks on the top surface of the first and second main beams.

[0016] During the installation of the second main beam, when the position of the second main beam has exceeded the connection position with the end beam, the outer ring operating handle is rotated in the opposite direction to drive the pre-installed structure away from the second main beam, so that the connection position of the second main beam and the end beam are aligned and fixedly connected by bolts; when the position of the second main beam is not yet fully aligned with the connection position with the end beam, the outer ring operating handle is rotated again to drive the pre-installed structure closer to the second main beam, so that the connection position of the second main beam and the end beam are aligned and fixedly connected by bolts.

[0017] In one embodiment, the length of the connecting rod is adjusted according to the height distance between the drive motor's transmission rod and the platform, and the angle of the threaded mating parts at both ends of the connecting rod is also adjusted to ensure that the connecting rod is properly connected to the half-operating ring and the half-clamp.

[0018] In one embodiment, when it is necessary to fine-tune the position of the pre-installed structure, loosen the fixing bolts and fixing nuts, adjust the position of the two half clamps so that the fixing parts of the two half clamps are in a horizontal position, remove the connecting rod and half operating ring outside the lower half clamp, extend the connecting rod outside the upper half clamp, and adjust the angle of the threaded mating parts at both ends of the connecting rod so that the connecting rod is normally connected to the upper half operating ring and half clamp.

[0019] The distance of movement of the pre-installed structure is finely adjusted by rotating the upper semi-operating ring.

[0020] In one embodiment, the upper half-operating ring rotates at an angle ranging from -90° to 90°.

[0021] In summary, the present invention has the following beneficial effects:

[0022] The auxiliary device of the present invention is connected to the drive shaft of the drive motor. The pin clamp of the auxiliary device presses the drive shaft. The drive shaft is rotated by rotating the outer ring of the auxiliary device, thereby driving the installed part of the bridge crane to move on the crane track and adjusting the distance between the installed part and the second main beam, in order to replace the adjustment of conventional tools such as jacks and hoists.

[0023] The bridge crane installation method of the present invention uses the auxiliary device of the present invention. The installer can rotate the auxiliary device from a safe position, which reduces the labor intensity of the installer. Moreover, by rotating the transmission shaft through the auxiliary device, the distance adjustment accuracy is high and the time consumption is short. In addition, the personal safety of the installer is guaranteed, which effectively improves the efficiency of the installation operation and reduces the installation cost. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0025] Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0026] In the diagram: 1-half clamp, 11-second threaded connection, 2-half operating ring, 21-first threaded connection, 3-fixed part, 4-connecting rod, 41-threaded mating part. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It is worth noting that the directional terms such as "up" and "down" used in this article are all relative to the perspective of the attached figures and are only for the purpose of description. They should not be interpreted as limitations on the technical solutions.

[0029] The present invention provides an auxiliary device for the installation of a bridge crane, which is applied to the drive shaft of a drive motor. It includes a cylindrical pin clamp, a regular polygonal outer ring operating hand ring and a connecting rod 4, with the outer ring operating hand ring disposed outside the pin clamp.

[0030] The working principle of the auxiliary device of the present invention is as follows: the pin clamp presses the drive shaft, and the friction between the pin clamp and the drive shaft is as large as possible. When the outer ring operating hand ring of the pin clamp is rotated, the pin clamp also drives the drive shaft to rotate, thereby driving the installed bridge crane part to move on the crane track.

[0031] Example 1

[0032] like Figure 1As shown, the pin clamp includes two symmetrical half clamps 1, and the outer ring operating hand ring includes two half operating rings 2. Each half operating ring 2 is fixedly set on the side of one half clamp 1 by multiple connecting rods 4. The two ends of the half clamp 1 are provided with fixing parts 3 with threaded holes facing outward. The fixing parts 3 at both ends of the two half clamps 1 are aligned accordingly. The fixing bolt passes through the fixing parts 3 of the two half clamps 1 and is threadedly connected to the fixing nut, fixing the two half clamps 1 to the outside of the drive shaft of the drive motor, and the two half operating rings 2 form the outer ring operating hand ring.

[0033] The outer operating wristband adopts a regular polygonal structure, such as a regular octagon, so that the operator can exert force more effectively and it is also easier to control the rotation angle of the drive shaft. The two half operating rings 2 are symmetrical in structure.

[0034] To increase the friction between the pin clamp and the drive shaft, a first anti-slip layer, which is a rubber layer, is provided on the inner wall of the half clamp 1. Specifically, when two half clamps 1 are connected to form a pin clamp, pressure is applied to the drive shaft to tighten it. The function of the first anti-slip layer is to increase the friction between the pin clamp and the drive shaft. Secondly, the first protective layer also serves to protect the drive shaft.

[0035] Furthermore, the semi-operating ring 2 is provided with a second anti-slip layer to prevent the hand from slipping during operation.

[0036] Example 2

[0037] Based on Example 1, such as Figure 2 As shown, the connecting rod 4 has external threaded surfaces at both ends. The inner wall of the semi-operating ring 2 has multiple first threaded connection parts 21, and the outer side of the semi-clamp 1 has multiple second threaded connection parts 11 that mate with the first threaded connection parts 21. One end of the connecting rod 4 is threadedly connected to the first threaded connection part 21 of the semi-operating ring 2, and the other end is threadedly connected to the second threaded connection part 11 of the semi-clamp 1. The length of the connecting rod 4 directly affects the operator's force; the longer the connecting rod 4, the less effort is required. However, due to the position of the drive motor, selecting a connecting rod 4 of appropriate length ensures that the outer operating ring can be rotated normally while achieving the maximum effort-saving effect.

[0038] It is understandable that when the operator rotates the drive shaft through the outer ring operating wristband, the force applied is related to the length of the connecting rod 4. Within the allowable height range between the drive shaft and the platform, the length of the connecting rod 4 should be as long as possible so that the operator can rotate the drive shaft with the least amount of force. Therefore, when it is necessary to change the length of the connecting rod 4, a suitable connecting rod 4 can be replaced through a threaded connection.

[0039] It should be noted that the platform refers to the platform on which the drive motor is installed.

[0040] Furthermore, such as Figure 2 As shown, the connecting rod 4 is a telescopic rod. Both ends of the connecting rod 4 are provided with freely rotatable threaded mating parts 41, and the threaded connecting parts are provided with external threaded surfaces. Specifically, the length of the connecting rod 4 can be directly adjusted. In order to ensure that the connecting rod 4 can still be normally connected with the half-operating ring 2 and the half-clamp 1 after the length of the connecting rod 4 changes, freely rotatable threaded mating parts 41 are provided at both ends of the connecting rod 4. By adjusting the rotation angle of the threaded mating parts 41, the threaded mating parts 41 at both ends of the connecting rod 4 are respectively threadedly connected to the second threaded connecting part 11 of the half-clamp 1 and the first threaded connecting part 21 of the half-operating ring 2.

[0041] Taking the outer ring operating bracelet as an example, combined with... Figure 1 and 2 It can be seen that three connecting rods 4 are set between the corresponding half clamp 1 and half operating ring 2. The connection points of the connecting rods 4 and the half operating ring 2 are all located at the intersection of two adjacent sides of the half operating ring 2. Among them, the connection point between the middle connecting rod 4 and the first threaded connection part 21 and the second threaded connection part 11 does not change during the length change process. Therefore, among the three connecting rods 4 between the corresponding half clamp 1 and half operating ring 2, the two ends of the middle connecting rod 4 are external threaded surfaces and no freely rotatable threaded mating parts 41 are provided. The two ends of the connecting rods 4 on both sides are provided with freely rotatable threaded mating parts 41, and the threaded connection parts are provided with external threaded surfaces. During the process of adjusting the length of the connecting rod 4, the angle of the threaded mating parts 41 of the connecting rods 4 on both sides can be adjusted.

[0042] This invention also provides a method for installing a bridge crane, the specific steps of which are as follows:

[0043] Place the two half clamps 1 at the transmission of the drive motor, and fix the two half clamps 1 with fixing bolts and fixing nuts. The two half clamps 1 press against the transmission shaft. The outer sides of the two half clamps 1 are fixedly connected to the two half operating rings 2 through the connecting rod 4. The two half operating rings 2 form the outer ring operating hand ring.

[0044] First, the two end beams are hoisted to the crane tracks on both sides of the top of the factory building for installation. Then, the first main beam is hoisted between the two end beams. The first main beam is fixedly connected to the two end beams with bolts to form a pre-installation structure.

[0045] The crane trolley is lifted onto the first main beam, and then the second main beam is lifted. The second main beam is close to the first main beam and the two end beams. The outer ring operating hand ring is rotated to drive the drive motor's transmission shaft to rotate, thereby driving the pre-installed structure to move towards the second main beam on the crane tracks on both sides. The second main beam is then connected to the two end beams respectively. Finally, the crane trolley is placed on the trolley tracks on the top surface of the first and second main beams.

[0046] During the installation of the second main beam, when the position of the second main beam has exceeded the connection position with the end beam, the outer ring operating handle is rotated in the opposite direction to drive the pre-installed structure away from the second main beam, so that the connection position of the second main beam and the end beam are aligned and fixedly connected by bolts; when the position of the second main beam is not yet fully aligned with the connection position with the end beam, the outer ring operating handle is rotated again to drive the pre-installed structure closer to the second main beam, so that the connection position of the second main beam and the end beam are aligned and fixedly connected by bolts.

[0047] Furthermore, the length of the connecting rod 4 is adjusted according to the height distance between the drive motor's transmission rod and the platform, and the angle of the threaded mating parts 41 at both ends of the connecting rod 4 is also adjusted to ensure that the connecting rod 4 is properly connected to the half operating ring 2 and the half clamp 1.

[0048] Specifically, since the length of each side of the semi-operating ring 2 remains constant, when adjusting the length of the connecting rod 4, the angle of the threaded mating part 41 needs to be adjusted simultaneously so that the change in the length of the connecting rod 4 does not affect the connection between the connecting rod 4 and the semi-operating ring 2 and the semi-clamp 1. Finally, by fixing the length of the connecting rod 4, the fixed connection of the connecting rod 4, the semi-operating ring 2 and the semi-clamp 1 can be achieved.

[0049] Furthermore, when it is necessary to fine-tune the position of the pre-installed structure, loosen the fixing bolts and fixing nuts, adjust the position of the two half clamps 1 so that the fixing parts 3 of the two half clamps 1 are in a horizontal position, remove the connecting rod 4 and the half operating ring 2 outside the lower half clamp 1, extend the connecting rod 4 outside the upper half clamp 1, and adjust the angle of the threaded mating parts 41 at both ends of the connecting rod 4 so that the connecting rod 4 is normally connected with the upper half operating ring 2 and the half clamp 1; fine-tune the distance of movement of the pre-installed structure by rotating the upper half operating ring 2, wherein the rotation angle range of the upper half operating ring 2 is -90° to 90°.

[0050] Specifically, appropriately lengthening the connecting rod 4 can save the operator's physical strength and make it easier to fine-tune the rotation angle of the drive shaft. This is because when the connecting rod 4 is longer, less force is required to push the drive shaft to rotate by the same angle, and the force is easier to control.

[0051] It should be noted that the base point for the rotation angle of the upper half-operating ring 2 is when both ends of the upper half-operating ring 2 are on the same horizontal plane. At this time, the rotation angle of the half-operating ring 2 is 0. When the half-operating ring 2 rotates clockwise, the angle range is 0 to 90°. When the half-operating ring 2 rotates counterclockwise, the angle range is -90° to 0.

[0052] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An auxiliary device for installing a bridge crane, characterized in that, The drive shaft used in the drive motor includes a cylindrical pin clamp, a regular polygonal outer ring operating hand ring and a connecting rod (4), wherein the outer ring operating hand ring is disposed outside the pin clamp; The pin clamp includes two symmetrical half clamps (1), and the outer ring operating hand ring includes two half operating rings (2). Each half operating ring (2) is fixedly set on the side of a half clamp (1) by multiple connecting rods (4). The two ends of the half clamp (1) are provided with fixing parts (3) with threaded holes. The two ends of the fixing parts (3) of the two half clamps (1) are aligned with each other. The fixing bolt passes through the fixing parts (3) of the two half clamps (1) and is threadedly connected to the fixing nut, fixing the two half clamps (1) to the outside of the drive shaft of the drive motor, and the two half operating rings (2) form the outer ring operating hand ring. The inner wall of the semi-clamp (1) is provided with a first anti-slip layer, which is a rubber layer, and the semi-operating ring (2) is provided with a second anti-slip layer; The outer ring operating wristband is a regular octagon, and the two half-operating rings (2) are symmetrical in structure; The connecting rod (4) has external threaded surfaces at both ends. The inner wall of the semi-operating ring (2) has multiple first threaded connection parts (21). The outer side of the semi-clamp (1) has multiple second threaded connection parts (11) that cooperate with the first threaded connection parts (21). One end of the connecting rod (4) is threadedly connected to the first threaded connection part (21) of the semi-operating ring (2), and the other end is threadedly connected to the second threaded connection part (11) of the semi-clamp (1). The connecting rod (4) is a telescopic rod. Both ends of the connecting rod (4) are provided with freely rotatable threaded mating parts (41). The threaded mating parts (41) are provided with external threaded surfaces. The threaded mating parts 41 at both ends of the connecting rod 4 are respectively threadedly connected to the second threaded connection part 11 of the half clamp 1 and the first threaded connection part 21 of the half operating ring 2.

2. A method for installing a bridge crane, using the auxiliary device for installing a bridge crane as described in claim 1, characterized in that... ； Place two half clamps (1) at the drive shaft of the drive motor and fix the two half clamps (1) with fixing bolts and fixing nuts. The two half clamps (1) press against the drive shaft. The outer sides of the two half clamps (1) are fixedly connected to the two half operating rings (2) through connecting rods (4). The two half operating rings (2) form an outer ring operating hand ring. First, the two end beams are hoisted to the crane tracks on both sides of the top of the factory building for installation. Then, the first main beam is hoisted between the two end beams. The first main beam is fixedly connected to the two end beams with bolts to form a pre-installation structure. The crane trolley is lifted onto the first main beam, and then the second main beam is lifted. The second main beam is close to the first main beam and the two end beams. The outer ring operating hand ring is rotated to drive the drive motor's transmission shaft to rotate, thereby driving the pre-installed structure to move towards the second main beam on the crane tracks on both sides. The second main beam is then connected to the two end beams respectively. Finally, the crane trolley is placed on the trolley tracks on the top surface of the first and second main beams. During the installation of the second main beam, when the position of the second main beam has exceeded the connection position with the end beam, the outer ring operating handle is rotated in the opposite direction to drive the pre-installed structure away from the second main beam, so that the connection position of the second main beam and the end beam are aligned and fixedly connected by bolts; when the position of the second main beam is not yet fully aligned with the connection position with the end beam, the outer ring operating handle is rotated again to drive the pre-installed structure closer to the second main beam, so that the connection position of the second main beam and the end beam are aligned and fixedly connected by bolts.

3. The bridge crane installation method as described in claim 2, characterized in that, Adjust the length of the connecting rod (4) according to the height distance between the drive motor's drive shaft and the platform, and at the same time adjust the angle of the threaded mating part (41) at both ends of the connecting rod (4) so ​​that the connecting rod (4) can be properly connected to the half operating ring (2) and the half clamp (1).

4. The bridge crane installation method as described in claim 2, characterized in that, When it is necessary to fine-tune the position of the pre-installed structure, loosen the fixing bolts and fixing nuts, adjust the position of the two half clamps (1) so that the fixing part (3) of the two half clamps (1) is in a horizontal position, remove the connecting rod (4) and half operating ring (2) outside the lower half clamp (1), extend the connecting rod (4) outside the upper half clamp (1), and at the same time adjust the angle of the threaded mating part (41) at both ends of the connecting rod (4) so ​​that the connecting rod (4) is normally connected to the upper half operating ring (2) and half clamp (1); The distance of the pre-installed structure movement is finely adjusted by rotating the upper half-operating ring (2).

5. The bridge crane installation method as described in claim 4, characterized in that, The rotation angle range of the upper half-operating ring (2) is -90° to 90°.

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