Lifting appliance for overhauling

Abstract

The utility model relates to the technical field of overhauling tools, in particular to a lifting appliance for overhauling, which comprises a lifting arm, a balancing weight, a fixing plate, a first lifting lug and a second lifting lug, the lifting arm is horizontally arranged, one end of the lifting arm is clamped and fixed between the balancing weight and the fixing plate, the other end of the lifting arm is fixedly connected with the first lifting lug, and the second lifting lug is fixedly connected with the balancing weight. The first lifting lug is used for hanging a sling; the second lifting lugs are fixed to the top of the lifting arm and the top of the fixing plate and used for hanging a chain block. According to the lifting appliance for overhauling, one end of the lifting appliance can flexibly enter a machine tool through a narrow channel or an opening, so that a part to be overhauled can be safely and reliably translated out of the machine tool.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance tools, in particular to a hoist for maintenance. Background Technique

[0002] Traditional machine tool maintenance usually involves disassembling faulty components and transporting them to a dedicated maintenance area for processing. In this process, how to efficiently and safely remove heavy and large components from the machine tool and transport them to the maintenance position has become a technical problem. Especially in positions where a traveling crane cannot directly lift, conventional hoists are often restricted.

[0003] As in the above technical solution, most known hoists (such as a hoist for a traveling crane disclosed in CN210973571U) are designed to directly lift components, but are not suitable for reaching inside the machine tool. Especially for equipment with a closed shell, these hoists usually cannot flexibly enter the machine tool through narrow channels or openings, and thus cannot safely and reliably translate the components to be maintained out of the machine tool. Content of the Utility Model

[0004] In view of this, the utility model provides a hoist for maintenance, one end of which can flexibly enter the machine tool through a narrow channel or opening, so that the components to be maintained can be safely and reliably translated out of the machine tool, solving the problem that existing hoists usually cannot flexibly enter the machine tool through narrow channels or openings, and thus cannot safely and reliably translate the components to be maintained out of the machine tool.

[0005] The technical solution of the utility model is realized as follows:

[0006] The utility model provides a hoist for maintenance, which includes a boom, and also includes a counterweight, a fixing plate, a first lifting lug and a second lifting lug. Among them,

[0007] The boom is horizontally arranged, one end of the boom is clamped and fixed between the counterweight and the fixing plate, and the other end is fixedly connected to the first lifting lug, and the first lifting lug is used for hanging a lifting rope;

[0008] The tops of the boom and the fixing plate are both fixed with the second lifting lugs, and the second lifting lugs are used for hanging a chain block.

[0009] On the basis of the above technical solution, preferably, the cross-section of the boom is in the shape of an I-beam.

[0010] On the basis of the above technical solution, preferably, several second lifting lugs are arranged on the top of the boom, and among them,

[0011] Several booms are arranged at intervals along the axial direction of the boom.

[0012] Based on the above technical solutions, preferably, it further includes a screw rod and a nut, wherein,

[0013] The screw rod vertically penetrates through the counterweight block and the fixed plate, and nuts are threadedly connected to both the upper and lower ends of the screw rod;

[0014] The counterweight block and the fixed plate are clamped and fixed between the upper and lower nuts.

[0015] Based on the above technical solutions, preferably, a plurality of screw rods are arranged in a circumferential matrix along the counterweight block, and through holes are vertically and penetratingly arranged at positions corresponding to the screw rods on the counterweight block and the fixed plate, wherein,

[0016] The screw rod penetrates through the through hole at the corresponding position.

[0017] Based on the above technical solutions, preferably, a plurality of counterweight blocks are stacked vertically, wherein,

[0018] A plurality of the counterweight blocks are connected in series through the screw rod.

[0019] Based on the above technical solutions, preferably, it further includes support legs, wherein,

[0020] A plurality of the support legs are fixed to the bottom of the lower counterweight block.

[0021] Based on the above technical solutions, preferably, it further includes rib plates and limit plates, wherein,

[0022] A plurality of rib plates are symmetrically arranged on both sides of one end of the boom, and the plurality of rib plates are arranged at intervals along the axial direction of the boom;

[0023] One end of the rib plate is fixedly connected to the boom, and the other end extends horizontally towards the side of the boom;

[0024] The plurality of rib plates are selectively clamped between the counterweight block and the fixed plate;

[0025] The limit plate is fixed to one end of the boom away from the first lifting lug;

[0026] The vertical width of the limit plate is greater than the vertical width of the boom.

[0027] Based on the above technical solutions, preferably, a first positioning groove is vertically and penetratingly arranged at the top of the upper counterweight block along the axial direction of the boom, wherein,

[0028] The bottom of the first positioning groove abuts against the bottom ends of the rib plate and the boom.

[0029] Based on the above technical solutions, preferably, a second positioning groove is provided through the bottom of the fixed plate along the axial direction of the lifting arm, wherein,

[0030] The bottom of the second positioning groove abuts against the top end of the rib plate and the top end of the lifting arm.

[0031] The hoist for maintenance of the present utility model has the following beneficial effects compared with the prior art:

[0032] (1) By providing a lifting arm, and by providing a first lifting lug on the lifting arm for hanging a sling and a second lifting lug for hanging a manual hoist, it is convenient to indirectly hang the hoist on the overhead crane through the manual hoist, and then move the hoist through the overhead crane, so that one end of the lifting arm extends into the machine tool. Then, after fixing the parts to be repaired with a sling, use the overhead crane to translate the parts out of the machine tool, and then hoist them to the repair station, so that one end of the hoist can flexibly enter the machine tool through a narrow passage or opening, and the parts to be repaired can be safely and reliably translated out of the machine tool, thereby enabling the hoist to be used for disassembling parts in the rolling mill housing or in positions where the overhead crane cannot be directly used for lifting in hidden places of the equipment.

[0033] (2) By clamping and fixing one end of the lifting arm between the counterweight and the fixed plate, it is convenient to adjust the relative position between the lifting arm and the counterweight, and thus convenient to adjust the length of the force arm to adapt to the hoisting of parts with different weights. (3) By providing the bottom of the first positioning groove to abut against the bottom end of the rib plate and the bottom end of the lifting arm, and the bottom of the second positioning groove to abut against the top end of the rib plate and the top end of the lifting arm, it is convenient to improve the clamping and fixing effect of the counterweight and the fixed plate on one end of the lifting arm. During use, the lifting arm is not easily deflected or displaced, improving the safety of hoisting.

[0034] (4) By providing a plurality of counterweights stacked vertically, and the plurality of counterweights are connected in series by screws, the transverse length of the hoist is shorter, and it can be used in a relatively narrow environment.

[0035] (5) By providing a plurality of support legs fixed to the bottom of the counterweight below, it is convenient for the storage and placement of the hoist. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1Isometric view of a lifting tool for maintenance of the present utility model;

[0038] Figure 2 Top view of a lifting tool for maintenance of the present utility model;

[0039] Figure 3 Cross-sectional view taken along line A-A of the present utility model;

[0040] Figure 4 Cross-sectional view taken along line B-B of the present utility model;

[0041] Figure 5 Partial explosion view of the present utility model;

[0042] In the figure: 1, boom; 2, counterweight; 3, fixing plate; 4, first lifting lug; 5, second lifting lug; 6, screw; 7, nut; 8, support leg; 9, rib plate; 10, limit plate; 601, through hole; 201, first positioning groove; 301, second positioning groove. Specific embodiments

[0043] Next, in combination with the specific embodiments of the present utility model, the technical solutions in the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0044] As Figures 1-5 shown, a lifting tool for maintenance of the present utility model includes a boom 1, a counterweight 2, a fixing plate 3, a first lifting lug 4 and a second lifting lug 5.

[0045] Among them, the boom 1 is an integral low-carbon steel structure, and its cross-section is in the shape of an I-beam. One end of the boom 1 is used to fix the parts to be maintained, and the other end is used to install the counterweight 2. Specifically, as Figure 1 shown, the boom 1 is horizontally arranged. One end of the boom 1 is clamped and fixed between the counterweight 2 and the fixing plate 3, and the other end is fixedly connected to the first lifting lug 4. The first lifting lug 4 is used to hang a lifting cable, and the lifting cable is used to connect the lifted object, such as the parts to be maintained. During lifting, the lifting cable is fixedly connected to the parts.

[0046] The lifting cable is any one of the prior arts, such as a lifting cable disclosed in CN220131684U. Specifically, a suitable type of lifting cable needs to be selected according to the needs of parts hoisting. In this embodiment, they are not listed one by one.

[0047] At the top of the boom 1 and the top of the fixed plate 3, second lifting lugs 5 are both fixed. The second lifting lugs 5 are used to hang a manual hoist or can also hang an electric hoist. The manual hoist or the electric hoist is hung on the hook of the overhead crane. The lifting tool is moved by the overhead crane, and then the position of the lifting tool is finely adjusted by the manual hoist or the electric hoist. In addition, the lifting tool can also be directly hung on the hook of the overhead crane through a sling.

[0048] As Figure 1 shown, several second lifting lugs 5 are arranged at the top of the boom 1, and several booms 1 are arranged at intervals along the axial direction of the boom 1. Among them, three second lifting lugs 5 shown in the figure are used to hang a manual hoist. When hoisting parts, different second lifting lugs 5 at different positions can be adjusted for use to keep the lifting tool and the lifted object balanced.

[0049] In this maintenance lifting tool, the counterweight 2 and the fixed plate 3 are connected and fixed by a screw 6 and a nut 7. Specifically, as Figure 3 shown, the screw 6 vertically penetrates the counterweight 2 and the fixed plate 3, and nuts 7 are threadedly connected to both the upper and lower ends of the screw 6; the counterweight 2 and the fixed plate 3 are clamped and fixed between the upper and lower nuts 7; when the upper and lower nuts 7 are tightened, one end of the boom 1 is clamped and fixed between the counterweight 2 and the fixed plate 3.

[0050] As Figures 2-5 shown, several screws 6 are arranged in a circumferential matrix of the counterweight 2, and through holes 601 are vertically penetrated at the positions corresponding to the screws 6 on the counterweight 2 and the fixed plate 3. Among them, the screw 6 penetrates the through holes 601 at the corresponding positions.

[0051] The function of the counterweight 2 is for counterweight. As Figure 1 shown, several counterweights 2 are stacked vertically. Among them, as Figure 3 shown, several counterweights 2 are fixed in series by screws 6. In the actual use process, the appropriate number of counterweights 2 can be set according to the hoisting requirements, or several counterweights 2 can be fixedly connected by spot welding.

[0052] To facilitate the storage of the lifting tool when it is idle, several support legs 8 are fixed at the bottom of the lower counterweight 2. Among them, several support legs 8 are arranged in a matrix, and the counterweight 2 is supported by the support legs 8 so that the lifting tool can be placed flat on the ground.

[0053] During the actual hoisting process, due to the pulling of the heavy object, the boom 1 is prone to torsional displacement, which easily leads to the clamping failure of the counterweight 2 and the fixing plate 3. To prevent this problem, a number of rib plates 9 are symmetrically arranged on both sides of one end of the boom 1, and a limiting plate 10 is fixedly arranged at the end of the boom 1 far from the first lifting lug 4. The vertical width of the limiting plate 10 is greater than the vertical width of the boom 1, and the limiting plate 10 is used to prevent the boom 1 from being laterally pulled out between the counterweight 2 and the fixing plate 3.

[0054] In the above structure, a number of rib plates 9 are arranged at intervals along the axial direction of the boom 1; one end of the rib plate 9 is fixedly connected to the boom 1, and the other end extends horizontally towards the side of the boom 1; a number of rib plates 9 are selectively clamped between the counterweight 2 and the fixing plate 3; the circumferential limit is realized through the rib plates 9, so that the boom 1 is not easily torsionally displaced, and the hoisting safety is improved.

[0055] To further prevent the torsional displacement of the boom 1, a first positioning groove 201 is axially penetrated through the top of the counterweight 2 above. The bottom of the first positioning groove 201 abuts against the bottom end of the rib plate 9 and the bottom end of the boom 1; a second positioning groove 301 is axially penetrated through the bottom of the fixing plate 3. The bottom of the second positioning groove 301 abuts against the top end of the rib plate 9 and the top end of the boom 1; the first positioning groove 201 and the second positioning groove 301 are used to assist the rib plate 9 to perform circumferential limit on the boom 1, so that the boom 1 is more difficult to torsionally displace, and the hoisting safety is improved.

[0056] The using method of a hoisting tool for maintenance of the present utility model is as follows:

[0057] When it is necessary to disassemble and repair the parts in the rolling mill housing or at the positions where the traveling crane cannot be directly used for hoisting in the equipment hidden places, a chain hoist is suspended on the second lifting lug 5, and then the chain hoist is suspended on the traveling crane. A sling is suspended on the first lifting lug 4. Then, through the cooperation of the traveling crane and the chain hoist, the end of the boom 1 with the sling suspended is extended into the machine tool. Then, the parts to be repaired are fixedly connected through the sling. Finally, through the cooperation of the traveling crane and the chain hoist, the parts are translated out of the machine tool and hoisted to the maintenance station.

[0058] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A hoist for maintenance, comprising a boom (1), characterized in that: It further includes a counterweight (2), a fixing plate (3), a first lifting lug (4) and a second lifting lug (5), wherein, the boom (1) is horizontally arranged, one end of the boom (1) is clamped and fixed between the counterweight (2) and the fixing plate (3), the other end is fixedly connected to the first lifting lug (4), and the first lifting lug (4) is used for hanging a sling; second lifting lugs (5) are fixedly arranged on the top of the boom (1) and the top of the fixing plate (3), and the second lifting lugs (5) are used for hanging a chain block.

2. The lifting tool for maintenance according to claim 1, wherein: The cross-section of the boom (1) is in the shape of an I-beam.

3. The lifting tool for maintenance according to claim 1, characterized in that: A plurality of the second lifting lugs (5) are arranged on the top of the boom (1), wherein, a plurality of the booms (1) are arranged at intervals along the axial direction of the boom (1).

4. The lifting tool for maintenance according to claim 1, wherein: It further includes a screw (6) and a nut (7), wherein, the screw (6) vertically penetrates through the counterweight (2) and the fixing plate (3), and nuts (7) are threadedly connected to both the upper and lower ends of the screw (6); the counterweight (2) and the fixing plate (3) are clamped and fixed between the upper and lower nuts (7).

5. The sling for maintenance according to claim 4, characterized in that: A plurality of the screws (6) are arranged in a circumferential matrix along the counterweight (2), and through holes (601) are vertically formed at positions corresponding to the screws (6) on the counterweight (2) and the fixing plate (3), wherein, the screw (6) penetrates through the through hole (601) at the corresponding position.

6. The sling for maintenance according to claim 5, characterized in that: A plurality of the counterweights (2) are arranged in a vertical stack, wherein, a plurality of the counterweights (2) are connected in series by the screw (6).

7. The lifting tool for maintenance according to claim 6, characterized in that: It further includes a support leg (8), wherein, a plurality of the support legs (8) are fixed to the bottom of the lower counterweight (2).

8. The overhaul sling according to claim 6, wherein: It further includes a rib plate (9) and a limit plate (10), wherein, a plurality of the rib plates (9) are symmetrically arranged on both sides of one end of the boom (1), and a plurality of the rib plates (9) are arranged at intervals along the axial direction of the boom (1); one end of the rib plate (9) is fixedly connected to the boom (1), and the other end horizontally extends towards the side of the boom (1); a plurality of the rib plates (9) are selectively clamped between the counterweight (2) and the fixing plate (3); the limit plate (10) is fixed to one end of the boom (1) away from the first lifting lug (4); the vertical width of the limit plate (10) is greater than the vertical width of the boom (1).

9. The lifting tool for maintenance according to claim 8, wherein: A first positioning groove (201) is vertically formed at the top of the upper counterweight (2) along the axial direction of the boom (1), wherein, the bottom of the first positioning groove (201) abuts against the bottom end of the rib plate (9) and the bottom end of the boom (1).

10. The lifting tool for maintenance according to claim 9, characterized in that: A second positioning groove (301) is vertically formed at the bottom of the fixing plate (3) along the axial direction of the boom (1), wherein, the bottom of the second positioning groove (301) abuts against the top end of the rib plate (9) and the top end of the boom (1).

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