Movable maintenance platform for maintenance of mining hydraulic support

Abstract

The utility model provides a mobile maintenance platform for maintenance of a mining hydraulic support, which comprises a hinge hole bushing a and a hinge hole bushing b. The hinge hole bushing of the mining hydraulic support structural member is repaired and remanufactured, compared with the traditional repair welding repair process, the hinge hole of the structural member is repaired, and the service life of the hinge hole of the structural member is prolonged. The used time is shorter by a method for repairing the bushing intermediate; rework caused by the welding problem is avoided, and the material performance is better due to the fact that the bushing intermediates replace welding and piling; the repair is completed in the same way, and the material cost for repairing the bushing intermediate is lower; according to the bushing intermediate repairing method, due to the fact that the repairing problem caused by welding does not exist, standardized repairing can be completed more easily. According to the maintenance method for repairing and remanufacturing the hinge hole bushing of the mining hydraulic support structural member, when the hinge hole is repaired and restored, the maintenance cost is reduced, the quality of a maintained product is greatly improved, and the maintenance method is high in speed, high in efficiency and high in standardization degree.

Description

Technical Field

[0001] This utility model relates to the field of maintenance technology for mining hydraulic supports, and more specifically, to a mobile maintenance platform for maintaining mining hydraulic supports. Background Technology

[0002] In recent years, a large number of new mining hydraulic supports have been manufactured, and these supports have begun to be brought to the surface for repair. Based on the definition of repair and remanufacturing in recent years, the standard is that the quality after repair surpasses that of new supports. Most of the hinge holes in the hydraulic support structural components undergoing repair have been damaged and deformed, with the support base, top beam, shield beam, and hinge holes experiencing the greatest pressure and the most severe deformation. Traditional repair methods involve enlarging the damaged hinge hole, circumferentially welding and boring it, and then boring the hinge hole again. The circumferential welding and boring step in traditional methods requires a certain level of skill from the welders, resulting in inconsistent welding quality. Some repair shops use automated robotic welding, but automated welding has high requirements for the roundness of the bored hole; if the bored hole is elliptical, the quality of the automated robotic welding is often poor, requiring manual re-welding. When performing the third step of boring to restore the original size, porosity and slag inclusions often occur because the actual material being bored is welded. This necessitates repair welding, impacting the project schedule. Furthermore, since the repaired hinged hole is welded, its rigidity and toughness are often inferior to the original component. Therefore, we have made improvements and proposed a mobile maintenance platform for repairing mining hydraulic supports. Utility Model Content

[0003] The purpose of this utility model is to address the problems raised in the existing background technology. To achieve the above-mentioned purpose, this utility model provides the following technical solution: a mobile maintenance platform for repairing mining hydraulic supports, comprising a hinge hole sleeve a and a hinge hole sleeve b. The hinge hole sleeve a is disposed on the inner side of a baffle. A curved cover plate is disposed at the edge of the baffle. The baffle is connected to an annular stop pin seat, and a nut is disposed on the outer surface of the annular stop pin seat.

[0004] As a preferred technical solution of this utility model, the intermediate body of the hinge hole bushing a and the hinge hole bushing b is installed into the enlarged bore of the hinge hole of the structural component to be repaired with an interference fit of 0.02-0.05mm.

[0005] As a preferred technical solution of this utility model, the two ends of the intermediate body of the hinge hole sleeve a and the hinge hole sleeve b are provided with welding bevels for future use.

[0006] As a preferred technical solution of this utility model, the intermediate body of the hinge hole bushing a and the hinge hole bushing b is made of 27SiMn steel.

[0007] As a preferred technical solution of this utility model, the outer diameter of the middle part of the hinge hole bushing a and the hinge hole bushing b corresponds to the enlargement size.

[0008] As a preferred technical solution of this utility model, the curved cover plate adopts an arc-shaped curved plate structure.

[0009] As a preferred technical solution of this utility model, the baffle is provided with holes.

[0010] As a preferred technical solution of this utility model, the thread provided on the annular stop pin seat is in cooperation with the nut.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In the solution of this utility model, the repair and remanufacturing method for the hinge hole of the structural component of the mining hydraulic support using the inlay intermediate body repair method takes less time than the traditional welding repair process; and it avoids rework due to welding problems. The inlay intermediate body, instead of welding, has better material properties; the material cost of the inlay intermediate body repair method is also less than that of the welding intermediate body repair method, which completes the repair in the same way; and because the inlay intermediate body repair method does not have the rework problems that would occur with welding, it is easier to complete standardized repairs.

[0012] This utility model relates to a repair and remanufacturing method for the hinge hole sleeve of a mining hydraulic support structure. This method reduces repair costs and greatly improves the quality of repaired products when repairing the original hinge hole. This repair method is fast, efficient, and highly standardized. Attached Figure Description

[0013] Figure 1 A top view of the structure provided for this utility model;

[0014] Figure 2 A schematic diagram of the left-side structure provided for this utility model;

[0015] Figure 3 This is a cross-sectional structural diagram provided for this utility model.

[0016] The image shows:

[0017] 1. Hinge hole insert a; 2. Hinge hole insert b; 3. Bent cover plate; 4. Baffle; 5. Annular stop pin seat; 6. Nut. Detailed Implementation

[0018] 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 with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0019] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, in the absence of conflict, the embodiments and features and technical solutions in the embodiments of this utility model can be combined with each other. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] Example 1: Please refer to Figures 1-3 A mobile maintenance platform for repairing mining hydraulic supports includes a hinge hole sleeve a1 and a hinge hole sleeve b2. The hinge hole sleeve a1 is located inside a baffle 4. A curved cover plate 3 is provided at the edge of the baffle 4. The baffle 4 is connected to an annular stop pin seat 5. A nut 6 is provided on the outer surface of the annular stop pin seat 5.

[0021] The intermediate bodies of hinge hole bushings a1 and b2 are installed into the enlarged bore of the hinge hole in the structural component to be repaired with an interference fit of 0.02-0.05mm. Welding bevels are provided at both ends of the intermediate bodies of hinge hole bushings a1 and b2 for future use. The intermediate bodies of hinge hole bushings a1 and b2 are made of 27SiMn steel. The outer diameter of the intermediate bodies of hinge hole bushings a1 and b2 corresponds to the enlarged bore size. The curved cover plate 3 adopts an arc-shaped curved plate structure. Holes are provided on the baffle plate 4. The thread on the annular stop pin seat 5 engages with the nut 6.

[0022] The overall process flow of this utility model includes: cutting the original cover plate of the structural component—boring the structural component—machined the outer circle of the sleeve—inserting the sleeve—welding—boring the inner hole of the sleeve—welding the cover plate and other accessories.

[0023] The insert is heat-treated to improve its hardness and strength.

[0024] Finished product dimensions: based on project technical requirements.

[0025] 1. Hinge joint hole between top beam and shield beam Pin For cladding, the gap between the hole and shaft should not exceed 0.7mm.

[0026] 2. Hinge holes between the base and the front connecting rod, and between the shield beam and the front connecting rod. Pin For cladding, the gap between the hole and shaft should not exceed 0.7mm.

[0027] 3. Hinge holes between the base and the rear connecting rod, and between the shield beam and the rear connecting rod. Pin For cladding, the gap between the hole and shaft should not exceed 0.7mm.

[0028] Technical solution

[0029] 1. Dimensions of the top beam and protective beam bushings: outer diameter inner diameter outer diameter raw materials

[0030] Top beam and shield beam boring holes to Next, measure the boring hole dimensions to determine the outer diameter of the insert, ensuring the insert is an interference or transition fit. After welding, bore the inner hole to... The curved cover plate 3 in the middle of the top beam, the stop pin seat, and the curved cover plate 3 at the hinge of the shield beam are cut off, and after the sleeve is processed, they are re-welded.

[0031] 2. Dimensions of the protective beam and front connecting rod, and the base and front connecting rod bushing: outer diameter inner diameter outer diameter raw materials The hinge holes of the base, shield beam and front connecting rod are bored to... Next, measure the boring hole dimensions to determine the outer diameter of the insert, ensuring the insert is an interference or transition fit. After welding, bore the inner hole to... The base and shield beam retaining pin seat were machined and then re-welded.

[0032] 3. Dimensions of the protective beam and rear connecting rod, and the base and rear connecting rod bushing: outer diameter inner diameter outer diameter raw materials Unsuitable materials were unavailable, and the machining allowance for the inner holes was too large. The hinge holes for the base, shield beam, and rear connecting rod were bored to... Next, measure the boring hole dimensions to determine the outer diameter of the insert, ensuring the insert is an interference or transition fit. After welding, bore the inner hole to... The base and shield beam retaining pin seat were machined and then re-welded.

[0033] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A mobile maintenance platform for maintenance of a hydraulic support for mining, characterized in that, It includes hinge hole bushing a (1) and hinge hole bushing b (2), hinge hole bushing a (1) is arranged at the inner side of baffle (4), the edge of baffle (4) is provided with bent cover plate (3), baffle (4) is connected with annular stop pin seat (5), the outer surface of annular stop pin seat (5) is provided with nut (6).

2. The mobile maintenance platform for maintenance of a mine hydraulic support according to claim 1, characterized in that, The bushing intermediate body of hinge hole bushing a (1) and hinge hole bushing b (2) is installed in the expanded boring of the hinge hole of the structure to be repaired with interference fit of 0.02-0.05mm.

3. The mobile maintenance platform for maintenance of a hydraulic support according to claim 2, characterized in that, The both ends of the bushing intermediate body of hinge hole bushing a (1) and hinge hole bushing b (2) are left with welding bevel for standby.

4. The mobile maintenance platform for maintenance of a hydraulic support according to claim 3, characterized in that, The bushing intermediate body of hinge hole bushing a (1) and hinge hole bushing b (2) adopts 27SiMn material steel.

5. The mobile maintenance platform for maintenance of a hydraulic support according to claim 4, characterized in that, The outer diameter size of the bushing intermediate body of hinge hole bushing a (1) and hinge hole bushing b (2) is matched with the corresponding size of the hole expansion.

6. The mobile maintenance platform for maintenance of a hydraulic support according to claim 5, characterized in that, The bent cover plate (3) adopts arc-shaped bent plate structure.

7. The mobile maintenance platform for maintenance of a hydraulic support according to claim 6, characterized in that, The baffle (4) is provided with hole.

8. The mobile maintenance platform for maintenance of a hydraulic support according to claim 7, characterized in that, The thread of the annular stop pin seat (5) is matched with nut (6).

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