Lifting-free device for bearing end cover

Abstract

The utility model discloses a lifting-free device for a bearing end cover. The lifting-free device comprises a bracket and a screw rod, the bracket comprises a plurality of first holes and a plurality of second holes along the horizontal direction, the plurality of first holes are arranged along the circumference, and the plurality of second holes are arranged along the circumference; the hole positions of the first hole and the second hole correspond to the hole position of the bearing end cover; at least two screws are connected with the first hole at the same time, or at least two screws are connected with the second hole at the same time. The device has the beneficial effects that the large bearing end cover can be safely and quickly disassembled and assembled under the condition of avoiding the hoisting operation, and the device is simple in structure, convenient to process, convenient and quick to operate, and capable of saving a large amount of operation time, simultaneously avoiding the potential safety hazard of the hoisting operation, and ensuring the safety production.

Description

Technical Field

[0001] This utility model relates to a coal mine electromechanical system, and more particularly to a bearing end cover lifting-free device. Background Technology

[0002] When changing the grease in the auxiliary shaft sheave bearing, it is necessary to open the bearing end cover. Due to the limitations of the sheave platform, it is impossible to set up a reliable and convenient manual hoist lifting point. Even if a manual hoist could be used to disassemble such a large bearing end cover as the hoist sheave, it would waste a lot of time on removing, hanging, and operating the hoist, and the lifting operation during the process would pose significant safety hazards, potentially leading to a production accident. Furthermore, the existing adjustable bearing end cover support device cannot support such a large bearing end cover, and is prone to breakage, causing an accident.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to solve the problem in the prior art that for large bearing end caps, it is impossible to set up hand chain hoist hanging points due to space limitations, or that there are great safety hazards in using hand chain hoists.

[0005] This utility model solves the above-mentioned technical problems through the following technical means:

[0006] The bearing end cover lifting-free device includes a bracket and screws; the bracket includes multiple first holes and multiple second holes in the horizontal direction, the multiple first holes are arranged in a circle, and the multiple second holes are arranged in a circle; the positions of the first holes and the second holes correspond to the positions of the holes in the bearing end cover; at least two screws are simultaneously connected to the first holes, or at least two screws are simultaneously connected to the second holes.

[0007] In using this invention, the screws corresponding to the first or second hole on the bearing end cover are removed. A support frame is erected according to the site conditions. The screw is passed through the first or second hole on the support frame and screwed into the hole where the screws on the bearing end cover were removed. The remaining screws on the bearing end cover are then removed. The bearing end cover is pried open using tools to check the reliability of the connection between the support frame, screw, and bearing end cover. The bearing end cover is then pulled outwards along the screw to replace the bearing grease. After replacement, the bearing end cover is replaced, and the screws are reinstalled. This invention safely and quickly completes the disassembly and installation of large bearing end covers without requiring lifting operations. The device has a simple structure, is easy to manufacture, and is convenient and quick to operate, saving a significant amount of working time. It also eliminates the safety hazards of lifting operations, ensuring safe production.

[0008] Preferably, the support includes at least two uprights, two crossbars, and a base; the two uprights are vertically parallel and spaced apart on the base, and the two crossbars are horizontally parallel and spaced apart on the two uprights.

[0009] Preferably, the column includes a plurality of first holes, and the crossbar includes a plurality of second holes.

[0010] The first and second holes are located on circumferences of different diameters, which can accommodate the assembly and disassembly of bearing end caps of two different sizes.

[0011] Preferably, both the base and the bracket are made of channel steel.

[0012] Preferably, extension brackets are connected to both sides of the base.

[0013] Preferably, a reinforcing rib is also connected between the extension frame and the support frame.

[0014] The extension frame and reinforcing ribs can stabilize and strengthen the entire support structure.

[0015] Preferably, both the first hole and the second hole are waist holes.

[0016] The slotted hole allows for a more flexible connection between the screw and the bearing screw hole on the end cap.

[0017] Preferably, there are four first holes, located at the upper left, lower left, upper right, and lower right positions respectively; and four second holes, located at the upper left, lower left, upper right, and lower right positions respectively.

[0018] Preferably, the screw has threaded sections at both ends and a smooth section in the middle. One end of the screw is connected to a limiting nut, and the thread of the screw matches the thread of the bearing end cap.

[0019] Preferably, the total length of the screw is at least 1000mm, the threaded sections at both ends are at least 100mm, the diameter of the smooth rod in the middle is greater than 20mm, and the threaded sections at both ends are coarse threads with a diameter of 20mm.

[0020] The advantages of this utility model are:

[0021] (1) When using this utility model, remove the screws corresponding to the first or second hole of the bearing end cover, set up the support according to the site, pass the screw through the first or second hole on the support, screw the screw into the hole where the screws on the bearing end cover were removed, then remove the remaining screws on the bearing end cover, use tools to pry open the bearing end cover, check whether the connection between the support, the screw and the bearing end cover is reliable, then pull the bearing end cover outward along the screw, replace the bearing grease, after the replacement is completed, put the bearing end cover back on the bearing, and then install the screws back in sequence. This utility model can safely and quickly complete the disassembly and installation of large bearing end covers without lifting operations. The design device has a simple structure, is easy to process, and is convenient and quick to operate, which can save a lot of working time, while eliminating the safety hazards of lifting operations and ensuring safe production.

[0022] (2) The first hole and the second hole are located on circumferences of different diameters, which can satisfy the disassembly and assembly of bearing end caps of two different sizes.

[0023] (3) The extension frame and reinforcing ribs can stabilize and reinforce the entire support.

[0024] (4) The waist hole can allow the screw to be connected to the end cover bearing screw hole in a relatively flexible manner. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the bearing end cover lifting-free device according to an embodiment of this utility model;

[0026] Figure 2 This is a schematic diagram of the screw structure according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the operation of the bearing end cover lifting-free device according to an embodiment of this utility model;

[0028] Numbering on the map:

[0029] 1. Bracket; 11. Column; 111. First hole; 121. Second hole; 12. Crossbar; 13. Base; 14. Extension frame; 15. Reinforcing rib;

[0030] 2. Screw; 21. Limit nut; 3. Bearing body; 4. Bearing end cap. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Example 1:

[0033] like Figure 1 As shown, the bearing end cover lifting-free device includes a bracket 1 and screws 2; the bracket 1 includes multiple first holes 111 and multiple second holes 121 in the horizontal direction, the multiple first holes 111 are arranged in a circle, and the multiple second holes 121 are arranged in a circle; the hole positions of the first holes 111 and the second holes 121 correspond to the hole positions of the bearing end cover 4; at least two screws 2 are simultaneously connected to the first holes 111, or at least two screws 2 are simultaneously connected to the second holes 121.

[0034] like Figure 1 As shown, the support 1 includes two uprights 11, two crossbars 12, and a base 13. The two uprights 11 are vertically parallel and spaced apart on the base 13, and the two crossbars 12 are horizontally parallel and spaced apart on the two uprights 11. In this embodiment, the uprights 11 and crossbars 12 are made of #8 channel steel, the base 13 is made of #14 channel steel, and the uprights 11 and crossbars 12, as well as the uprights 11 and base 13, are all connected by welding.

[0035] Since the column 11 includes multiple first holes 111 and the crossbar 12 includes multiple second holes 121, and the first holes 111 and second holes 121 are located on circumferences of different diameters, the length of the column 11 is designed to correspond as closely as possible to the height of the bearing end cap 4 to be disassembled. The welding position of the crossbar 12 is also designed so that the second holes 121 correspond to the holes on the bearing end cap 4. The different diameters of the first holes 111 and second holes 121 allow for the assembly and disassembly of bearing end caps 4 of two different sizes.

[0036] Both the first hole 111 and the second hole 121 are oblong holes. The direction of the oblong hole can be vertical or horizontal. The oblong hole allows the screw 2 to be connected to the bearing screw hole of the end cover more flexibly, avoiding the problem of the screw 2 and the hole on the bearing body 3 being misaligned and unable to be connected or unreliable in the case of round holes.

[0037] In this embodiment, there are four first holes 111, located at the upper left, lower left, upper right, and lower right positions respectively; and four second holes 121, located at the upper left, lower left, upper right, and lower right positions respectively. These correspond to the four screw holes on the bearing end cover 4 located in the northeast, northwest, southwest, and southeast directions. At least two first holes 111 or two second holes 121 are required, and these two holes should be aligned as closely as possible with the holes on the upper part of the bearing end cover 4 to ensure proper support of the bearing end cover 4.

[0038] It should be noted that, in this embodiment, the requirement for the first hole 111 to correspond with the hole on the bearing end cover 4 is that the screw can reliably connect with the threaded hole on the bearing body 3 after passing through the first hole 111.

[0039] This embodiment only provides two sets of hole positions. A third hole and multiple sets of hole positions can be opened as needed.

[0040] like Figure 2 As shown, the screw 2 has threaded sections at both ends and a smooth section in the middle. One end of the screw 2 is connected to a limiting nut 21, which is used to limit the screw 2 on the bracket 1. The threads of the screw 2 match the threads of the bearing end cap 4 and the bearing body 3. In this embodiment, the total length of the screw 2 is at least 1000mm, the threaded sections at both ends are at least 100mm long, the diameter of the smooth section in the middle is greater than 20mm, and the threaded sections at both ends are coarse threads with a diameter of 20mm.

[0041] In this embodiment, there are four first holes 111 and four second holes 121, which can satisfy the simultaneous use of four screws 2.

[0042] like Figure 3As shown, assuming that the hole position on the bearing end cap 4 corresponds to the first hole 111, then in this embodiment only the first hole 111 is used and the second hole 121 is not used; similarly, if the size of the bearing end cap 4 corresponds to the second hole 121, then only the second hole 121 is used. In this embodiment, the bearing body 3 is vertically positioned, and the bearing end cover 4 is placed vertically. First, remove the screws on the bearing end cover 4 corresponding to the first hole 111. Set up the bracket 1 according to the site conditions. The bracket 1 is located in front of the bearing end cover 4 and is placed at intervals. Pass the screw 2 through the first hole 111 on the bracket and screw the screw 2 into the hole on the bearing end cover 4 where the screws were removed. Then remove the remaining screws on the bearing end cover 4. Use a tool to pry open the bearing end cover 4 and check whether the connection between the bracket 1, the screw 2 and the bearing end cover 4 is reliable. Then pull the bearing end cover 4 outward along the screw 2. At this time, the smooth part of the screw 2 can provide temporary support for the bearing end cover 4. Replace the grease on the bearing body 3. After the replacement is completed, put the bearing end cover 4 back on the bearing body 3 along the screw 2. First, install the screws in the screw holes that are not connected to the screw, then remove the screw 2 and install the screws in the remaining holes.

[0043] This embodiment safely and quickly completes the disassembly and installation of the large bearing end cover 4 without lifting operations. The device has a simple structure, is easy to process, and is convenient and quick to operate, saving a lot of working time. At the same time, it eliminates the safety hazards of lifting operations and ensures safe production.

[0044] Example 2:

[0045] like Figure 1 As shown, based on Embodiment 1, extension frames 14 are connected to both sides of the base 13. Reinforcing ribs 15 are also connected between the extension frames 14 and the support 1.

[0046] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bearing end cover lifting-free device, characterized in that, The device includes a bracket and screws; the bracket includes multiple first holes and multiple second holes in the horizontal direction, the multiple first holes are arranged in a circle, and the multiple second holes are arranged in a circle; the positions of the first holes and the second holes correspond to the positions of the holes on the bearing end cap; at least two screws are simultaneously connected to the first holes, or at least two screws are simultaneously connected to the second holes.

2. The bearing end cover lifting-free device according to claim 1, characterized in that, The support includes at least two uprights, two crossbars, and a base; the two uprights are vertically parallel and spaced apart on the base, and the two crossbars are horizontally parallel and spaced apart on the two uprights.

3. The bearing end cover lifting-free device according to claim 2, characterized in that, The column includes multiple first holes, and the crossbar includes multiple second holes.

4. The bearing end cover lifting-free device according to claim 2, characterized in that, Both the base and the bracket are made of channel steel.

5. The bearing end cover lifting-free device according to claim 2, characterized in that, Extension brackets are connected to both sides of the base.

6. The bearing end cover lifting-free device according to claim 5, characterized in that, A reinforcing rib is also connected between the extension frame and the support frame.

7. The bearing end cover lifting-free device according to claim 1, characterized in that, Both the first hole and the second hole are waist holes.

8. The bearing end cover lifting-free device according to claim 1, characterized in that, The first hole consists of four holes, located at the upper left, lower left, upper right, and lower right positions respectively; the second hole consists of four holes, located at the upper left, lower left, upper right, and lower right positions respectively.

9. The bearing end cover lifting-free device according to claim 1, characterized in that, The screw has threaded sections at both ends and a smooth section in the middle. One end of the screw is connected to a limiting nut, and the thread of the screw matches the thread of the bearing end cap.

10. The bearing end cover lifting-free device according to claim 9, characterized in that, The total length of the screw is at least 1000mm, the threaded sections at both ends are at least 100mm, the diameter of the smooth rod in the middle is greater than 20mm, and the threaded sections at both ends are coarse threads with a diameter of 20mm.

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