Lifting appliance device for assisting cold sawing machine in replacing saw blade

Abstract

The utility model discloses a lifting appliance device for assisting a cold sawing machine to replace a saw blade, which belongs to the technical field of steel rolling equipment and comprises a travelling crane with a lifting hook, a lifting belt hung on the lifting hook, a lifting frame hung on the lifting belt through a chain block and a lifting hook arranged at the bottom of the lifting frame and matched with a lifting hole formed in the saw blade. The hanging bracket is of an integrally-formed structure and comprises two triangular supports which are symmetrically arranged up and down, the two triangular supports are symmetrical with a line passing through any vertex as the axis, and the opposite side of the vertex is parallel to the symmetry axis. According to the utility model, the labor intensity of operators can be reduced, the operation safety can be improved, the occurrence of safety accidents can be effectively avoided, meanwhile, the saw blade can be replaced more conveniently, the replacement time of the saw blade can be effectively shortened, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rolling equipment, and particularly relates to a lifting device for assisting a cold saw to replace a saw blade. Background Art

[0002] A cold saw is a commonly used device in profile processing. Its function is to saw the straightened profiles into various specified lengths to meet different production requirements. During the profile processing, the saw blade, as a key component of the cold saw, its performance directly affects the sawing quality and efficiency. However, during the use of the saw blade, due to long-term friction with the profile, phenomena such as wear and cracking will occur, so it needs to be replaced regularly. The traditional saw blade replacement method mainly relies on manual labor. Multiple operators need to work together to disassemble the worn saw blade from the saw shaft and then install a new saw blade. However, due to the large diameter and heavy weight of the saw blade, a large amount of physical strength is required when manually replacing the saw blade, the labor intensity is high, the speed is slow, which seriously affects the production progress and has certain safety hazards. Therefore, there is a need for a lifting device for assisting a cold saw to replace a saw blade that can improve the saw blade replacement efficiency, reduce the labor intensity, and improve the on-site operation safety at the same time. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a lifting device for assisting a cold saw to replace a saw blade, which can reduce the labor intensity of operators, improve the operation safety, effectively avoid the occurrence of safety accidents, and at the same time make the replacement of the saw blade more convenient, effectively shorten the replacement time of the saw blade, and improve the production efficiency.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A lifting device for assisting a cold saw to replace a saw blade, including a traveling crane with a lifting hook, a sling suspended on the lifting hook, a hanging frame suspended on the sling through a chain block, and a hook arranged at the bottom of the hanging frame and adapted to the lifting hole opened on the saw blade. The hanging frame is an integrally formed structure, including two triangular frames symmetrically arranged up and down. The two triangular frames are symmetrical about a line passing through any vertex, and the opposite side of this vertex is parallel to the axis of symmetry.

[0006] The further improvement of the technical solution of the utility model lies in that: the hook includes a support column arranged on one side of the bottom of the hanging frame and a stopper connected to the hanging frame through the support column and adapted to the lifting hole on the saw blade.

[0007] The further improvement of the technical solution of the utility model lies in that: the stopper is a circular plate-like structure, and the support column is eccentrically arranged on the lower side close to the stopper.

[0008] A further improvement of the technical solution of the present utility model lies in that the hanging frame is connected to the chain hoist through a connecting block provided at its top, and the connecting block is arranged on the same side as the hook; the two triangular frames of the hanging frame adopt an equilateral triangle structure or a right triangle structure.

[0009] A further improvement of the technical solution of the present utility model lies in that when the two triangular frames of the hanging frame adopt a right triangle structure, the two triangular frames are axisymmetric with respect to a line passing through any acute vertex.

[0010] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model is:

[0011] The hoisting device for assisting the cold sawing machine to replace the saw blade of the present utility model can reduce the labor intensity of the operator, improve the operation safety, effectively avoid the occurrence of safety accidents, and at the same time can make the replacement of the saw blade more convenient, effectively shorten the replacement time of the saw blade, and improve the production efficiency. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the hoisting device in Embodiment 1 of the present utility model;

[0013] Figure 2 is a schematic plan view of the hanging frame in the hoisting device of Embodiment 1 of the present utility model;

[0014] Figure 3 is a schematic plan view of the hanging frame in the hoisting device of Embodiment 2 of the present utility model;

[0015] Wherein, 1, traveling crane, 1-1, lifting hook, 2, sling, 3, chain hoist, 4, hanging frame, 5, stop member, 6, connecting block, 7, support column. Detailed Embodiments

[0016] The following further describes the present utility model in detail with reference to the embodiments:

[0017] Embodiment 1

[0018] As Figure 1 and Figure 2As shown in the figure, this embodiment provides a lifting device for assisting a cold saw to replace a saw blade, including a traveling crane 1 with a lifting function, a sling 2, a chain hoist 3 with a manual lifting function, a hanging bracket 4, and a hook. A lifting hook 1-1 is provided on the traveling crane 1. The sling 2 is suspended on the lifting hook 1-1 of the traveling crane 1. The hanging bracket 4 is suspended on the sling 2 through the chain hoist 3. The hook is arranged at the bottom of the hanging bracket 4 and is adapted to the lifting hole opened on the saw blade. The hanging bracket 4 is an integrally formed structure, including two triangular brackets symmetrically arranged up and down. The two triangular brackets are axisymmetric with respect to a line passing through any vertex, and the opposite side of this vertex is parallel to the axis of symmetry, thereby forming a stable support structure, which is convenient for lifting a saw blade with a large weight and is conducive to the operator grasping it. Preferably, as Figure 2 shown, the two triangular brackets adopt a right-angled triangle structure, and the two triangular brackets are axisymmetric with respect to a line passing through any acute vertex.

[0019] Specifically, the hook includes a support column 7 and a stopper 5. The support column 7 is arranged on one side of the bottom of the hanging bracket 4, that is, at one end of the bottom edge of the lower triangular bracket. The stopper 5 is connected to the hanging bracket 4 through the support column 7 and is adapted to the lifting hole on the saw blade. Preferably, the stopper 5 is a circular plate-like structure, and the support column 7 is eccentrically arranged near the lower side of the stopper 5. When the saw blade is suspended on the support column 7, the eccentric stopper 5 is more conducive to the stability of the saw blade and avoids the saw blade falling off during the lifting process, threatening the safety of the operator.

[0020] The hanging bracket 4 is connected to the chain hoist 3 through a connection block 6 arranged on its top, and the connection block 6 is arranged on the same side as the hook. The chain hoist 3 is a chain block, which is suitable for short-distance lifting and is conducive to fine-tuning the height of the saw blade during the process of the traveling crane 1 lifting the saw blade. It mainly consists of an upper hook, a working mechanism, a lower hook, a lifting chain, a hand chain, etc. The hanging bracket 4 is suspended on the lower hook of the chain hoist 3 through the connection block 6, and the upper hook of the chain hoist 3 is suspended on the lifting hook 1-1 of the traveling crane 1 through the sling 2. The working mechanism of the chain hoist 3 includes a lifting sprocket, a hand chain wheel, a ratchet friction plate type one-way brake, a transmission gear and a shaft, etc. It is mainly based on the ratchet and pawl mechanism and gear transmission. When the traveling crane 1 drives the hanging bracket 4 and the hook to lift the saw blade, the operator can pull the hand chain to fine-tune the height of the saw blade, so as to accurately assist in the disassembly and installation of the saw blade.

[0021] During operation, start the overhead crane 1 to lower the hanging bracket 4 close to the saw blade to be lifted. While an operator holds the hanging bracket 4 with one hand, the operator can pull the manual chain on the hoist 3 with the other hand to finely adjust the height of the saw blade, so that the hook on the hanging bracket 4 penetrates into the lifting hole of the saw blade. The stopper 5 on the hook stops the saw blade to make it stably hang on the support column 7. Start the overhead crane 1 again to lift the hanging bracket 4 and drive the lifted saw blade to move to the cold sawing machine for replacement and installation. The whole process does not require the participation of multiple operators, which can effectively reduce the labor intensity of the operators, improve the operation safety, effectively avoid the occurrence of safety accidents, and at the same time make the replacement of the saw blade more convenient, effectively shorten the replacement time of the saw blade, and improve the production efficiency.

[0022] Embodiment 2

[0023] As Figure 3 shown, for a lifting device for assisting in replacing the saw blade of a cold sawing machine provided in this embodiment, the structural relationships of other components except the hanging bracket 4 and the connections between these components are the same as those in Embodiment 1. The difference is that:

[0024] The two triangular brackets of the hanging bracket 4 adopt an equilateral triangle structure. When the two triangular brackets are symmetric about a line passing through any vertex, and the opposite side of this vertex is parallel to the axis of symmetry, the hanging bracket 4 presents an "8" - shaped structure.

[0025] It can be understood that the present utility model is described through some embodiments. As is known to those skilled in the art, without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A lifting device for assisting a cold sawing machine to replace a saw blade, characterized in that: It includes an overhead crane (1) provided with a lifting hook (1-1), a sling (2) suspended on the lifting hook (1-1), a hanging bracket (4) suspended on the sling (2) through a chain block (3), and a hook provided at the bottom of the hanging bracket (4) and adapted to the lifting hole provided on the saw blade. The hanging bracket (4) is an integrally formed structure, including two triangular brackets symmetrically arranged up and down. The two triangular brackets are axisymmetric about a line passing through any vertex, and the opposite side of this vertex is parallel to the axis of symmetry.

2. The hoisting device for assisting in replacing the saw blade of a cold sawing machine according to claim 1, characterized in that: The hook includes a support column (7) provided on one side of the bottom of the hanging bracket (4) and a stopper (5) connected to the hanging bracket (4) through the support column (7) and adapted to the lifting hole on the saw blade.

3. The lifting device for replacing the saw blade of the auxiliary cold sawing machine according to claim 2, characterized in that: The stopper (5) is of a circular plate-like structure, and the support column (7) is eccentrically arranged near the lower side of the stopper (5).

4. The hoisting device for replacing the saw blade of an auxiliary cold sawing machine according to claim 3, characterized in that: The hanging bracket (4) is connected to the chain block (3) through a connecting block (6) provided on its top, and the connecting block (6) is arranged on the same side as the hook; the two triangular brackets of the hanging bracket (4) adopt an equilateral triangle structure or a right triangle structure.

5. The lifting device for replacing the saw blade of the auxiliary cold sawing machine according to claim 4, characterized in that: When the two triangular brackets of the hanging bracket (4) adopt a right triangle structure, the two triangular brackets are axisymmetric about a line passing through any acute vertex.

Images