Shape-variable magnetic safety net frame

Abstract

The utility model provides a variable-shape magnetic safety net frame which comprises two sets of transverse frame beams arranged in parallel, and the two ends of the two sets of transverse frame beams are connected through longitudinal frame beams arranged longitudinally. The vertex angle parts of the transverse frame beams and the longitudinal frame beams are combined and connected through locking pin structures, and are combined together to form an integral frame structure; the outer walls of the transverse frame beams and the longitudinal frame beams are provided with magnetic attraction structures used for being fixed to a to-be-overhauled hole. And a safety net is fixedly mounted in the integral frame structure through safety net lock catches. The frame can be suitable for hole protection in the maintenance process of the water-turbine generator set, different sizes and models can be conveniently selected according to the sizes of the holes, then the frame is suitable for safety protection of the holes of different sizes and shapes, the hole protection arrangement efficiency is improved, and the safety of maintenance operation is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of water turbine maintenance and protection, in particular to a magnetic safety net frame with a variable shape. Background Art

[0002] During the maintenance of hydro-turbine generator sets, holes left after the equipment is dismantled or holes in the unit equipment itself need to be protected by safety nets to prevent people from falling and protect the personal safety of maintenance personnel. At present, the main way to arrange the safety net is to use the bolt holes on the equipment, and the safety net is fixed on the bolts; for holes that are not used by bolt holes, aluminum alloy cover plates are made for protection. The safety net is tied to the bolts, which poses a safety hazard of being not firmly fixed. In addition, arranging the safety net is an edge operation, and there is a risk of pulling the safety net; the method of making aluminum alloy cover plates is that the cover plates are heavy and difficult to carry, and there is a problem that different cover plates must be made to match the hole sizes and shapes, which has poor versatility and is difficult to manage and use tooling. Utility Model Content

[0003] In order to solve the current technical problems, the main purpose of the utility model is to provide a magnetic safety net frame with a variable shape. This frame can be used for hole protection during the maintenance of a hydro-turbine generator set. Different size models can be conveniently selected according to the size of the hole, and thus suitable for the safety protection of holes of different sizes and shapes, thereby improving the efficiency of the hole protection layout and ensuring the safety of the maintenance operation.

[0004] In order to realize the above technical features, the purpose of the utility model is achieved as follows: a variable-shape magnetic safety net frame, comprising two sets of parallel transverse frame beams, the two ends of the two sets of transverse frame beams are respectively connected by longitudinal frame beams arranged longitudinally; the top corners of the transverse frame beams and the longitudinal frame beams are connected by a locking pin structure combination, and are combined together to form an overall frame structure;

[0005] The outer walls of the transverse frame beam and the longitudinal frame beam are provided with a magnetic attraction structure for fixing to the opening to be inspected;

[0006] A safety net is fixedly installed inside the overall frame structure via a safety net lock.

[0007] The locking pin structure includes a positioning stud, which is fixed at the top of a positive step groove. The positive step groove is processed at the top of one of the ends of the transverse frame beam and the longitudinal frame beam, and the corresponding transverse frame beam and the other end of the longitudinal frame beam are processed at the bottom with a corresponding reverse step groove. A pin hole is provided at the position of the reverse step groove, and the pin hole cooperates with the positioning stud. A locking nut is installed at the top of the positioning stud through threaded cooperation.

[0008] The height dimension of the positive step groove and the reverse step groove is half of the thickness dimension of the corresponding transverse frame beam or longitudinal frame beam.

[0009] The magnetic attraction structure includes end surface magnet blocks fixed on the top end surface or the bottom end surface of the transverse frame beam and the longitudinal frame beam;

[0010] It also includes side magnet blocks fixed on the outer side walls of the transverse frame beam and the longitudinal frame beam.

[0011] The safety net is a flame retardant safety net.

[0012] The transverse frame beams and the longitudinal frame beams have a variety of different models and can be selectively combined for use according to the size of the opening.

[0013] The utility model has the following beneficial effects:

[0014] 1. A magnet block is arranged on the safety net frame beam of the utility model, and the safety net frame can be magnetically attracted around the hole, thus solving the problem that the safety net cannot be installed due to the lack of threaded holes around the hole.

[0015] 2. The safety net frame beam of the utility model is modularly designed and can be assembled and adjusted according to the size and shape of the holes, which enhances the versatility of hole safety protection and improves the work efficiency of safety net layout.

[0016] 3. The safety net frame of the utility model is provided with a safety net lock buckle, and the safety net is reliably connected, which reduces the safety risk of the safety net arrangement and improves the safety of the safety net arrangement.

[0017] 4. The safety net frame of the utility model selectively uses different sizes, thereby changing different sizes and shapes, and can replace and use cover plates of various shapes and sizes, thereby reducing the difficulty of tool management and improving the economy of tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a top view of the utility model.

[0020] Figure 2 It is a side view of a single longitudinal frame beam structure of the utility model.

[0021] In the figure: longitudinal frame beam 1, transverse frame beam 2, end magnet block 3, safety net lock 4, locking pin structure 5, safety net 6, positive step groove 7, positioning stud 8, locking nut 9, reverse step groove 10, pin hole 11, side magnet block 12. DETAILED DESCRIPTION

[0022] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0023] See also Figure 1-2 A magnetic safety net frame with a variable shape includes two groups of parallel transverse frame beams 2, and the two ends of the two groups of transverse frame beams 2 are connected by longitudinal frame beams 1 arranged longitudinally; the top corners of the transverse frame beams 2 and the longitudinal frame beams 1 are connected by a locking pin structure 5, and are combined together to form an overall frame structure; the outer walls of the transverse frame beams 2 and the longitudinal frame beams 1 are provided with a magnetic suction structure for fixing to the hole to be repaired; the interior of the overall frame structure is fixed with a safety net 6 through a safety net lock 4. The magnetic safety net frame with the above structure can be applied to hole protection during the maintenance of a hydro-turbine generator set, and different size models can be conveniently selected according to the size of the hole, so as to be applicable to the safety protection of holes of different sizes and shapes, improve the efficiency of hole protection arrangement, and ensure the safety of maintenance operations.

[0024] Furthermore, the locking pin structure 5 includes a positioning stud 8, which is fixed on the top of the forward step groove 7. The forward step groove 7 is processed on the top of one of the ends of the transverse frame beam 2 and the longitudinal frame beam 1, and the corresponding transverse frame beam 2 and the longitudinal frame beam 1 are processed on the bottom of the other end with a corresponding reverse step groove 10. A pin hole 11 is provided at the location of the reverse step groove 10, and the pin hole 11 is matched with the positioning stud 8. The top of the positioning stud 8 is installed with a locking nut 9 through threaded matching. The above-mentioned locking pin structure 5 can realize the combined connection between the adjacent transverse frame beams 2 and the longitudinal frame beams 1, and then form an overall rectangular frame structure to achieve the purpose of protecting the opening. In the specific installation process, the pin hole 11 of one of the transverse frame beams 2 is matched with the positioning stud 8 on the other longitudinal frame beam 1, and then the positioning stud 8 is locked and fixed by the locking nut 9.

[0025] Furthermore, when the safety net frame beam is connected, the frame beam pin hole 11 is connected to the positioning stud 8, and can be installed in a straight line or at an angle. After determining the position, tighten the locking nut 9 and connect the frame beam according to the size and shape of the hole to adapt to holes of different shapes.

[0026] Furthermore, the height of the forward step groove 7 and the reverse step groove 10 is half of the thickness of the corresponding transverse frame beam 2 or longitudinal frame beam 1. By adopting the above-mentioned size matching, it is ensured that during the combination of the transverse frame beam 2 and the longitudinal frame beam 1, the top of the entire frame structure can be kept flush and the thickness is consistent.

[0027] Furthermore, the magnetic attraction structure includes an end face magnet block 3 fixed to the top end face or the bottom end face of the transverse frame beam 2 and the longitudinal frame beam 1. By adopting the end face magnet block 3, it is convenient to achieve magnetic attraction and fixation with the end face of the hole opening, thereby improving the reliability of its installation and fixation, and enhancing the flexibility of use.

[0028] Furthermore, it also includes a side magnet block 12 fixed on the outer side wall of the transverse frame beam 2 and the longitudinal frame beam 1. The side magnet block 12 can cooperate with the inner side wall of the hole, thereby realizing magnetic fixation of the inner side wall of the hole. This improves the reliability of its installation and fixation, and enhances the flexibility of use.

[0029] Furthermore, the safety net 6 is a flame retardant safety net, which has a good fire prevention effect and ensures its reliability.

[0030] Furthermore, the transverse frame beam 2 and the longitudinal frame beam 1 have a variety of different models, and can be selectively combined and used according to the size of the hole. Through the above-mentioned different size models, it can be well adapted to the protection of holes of different sizes.

[0031] The specific working process and principle of this utility model:

[0032] (1) Confirm the hole shape, measure the hole size or verify the hole size according to the drawing;

[0033] (2) Magnetically attract the transverse frame beam 2 and the longitudinal frame beam 1 to the edge of the hole ≮10 cm, and connect the next frame beam pin hole 11 to the positioning stud 8;

[0034] (3) According to the shape of the hole, rotate the frame beam to ensure a uniform distance from the edge of the hole;

[0035] (4) After the frame beam angle is determined, install and tighten the locking nut 9 to prevent the frame beam shape from changing;

[0036] (5) The frame beams are connected end to end. After the safety net frame is installed along the edge of the hole, the flame retardant safety net is installed. The safety net 6 is connected and fixed with the safety net lock 4. The tension of the safety net 6 is appropriate;

[0037] (6) During the use of the safety net frame, check whether the safety net is in good condition, whether the magnetic attraction of the frame beam is effective, and whether the shape and size have changed;

[0038] (7) When disassembling the safety net frame, loosen the locking nut 9 of the frame beam, remove the lock connection, and remove the frame beams in sequence;

[0039] (8) Remove the safety net and frame beams, and store and organize the safety net frame components.

Claims

1. A shape-variable magnetic safety net frame, characterized in that: It comprises two groups of transverse frame beams (2) arranged in parallel, the two ends of the two groups of transverse frame beams (2) are respectively connected via longitudinal frame beams (1) arranged longitudinally; the top corners of the transverse frame beams (2) and the longitudinal frame beams (1) are connected in combination via a locking pin structure (5), and are combined together to form an overall frame structure; The outer walls of the transverse frame beam (2) and the longitudinal frame beam (1) are provided with magnetic structures for fixing to the opening to be inspected; A safety net (6) is fixedly installed inside the overall frame structure via a safety net lock buckle (4).

2. A shape-variable magnetic safety net frame according to claim 1, characterized in that: The locking pin structure (5) comprises a positioning stud (8), the positioning stud (8) being fixed at the top of a positive step groove (7), the positive step groove (7) being machined at the top of one of the ends of the transverse frame beam (2) and the longitudinal frame beam (1), and a corresponding reverse step groove (10) being machined at the bottom of the other end of the corresponding transverse frame beam (2) and the longitudinal frame beam (1), a pin hole (11) being arranged at the position of the reverse step groove (10), the pin hole (11) being matched with the positioning stud (8), and a locking nut (9) being installed at the top of the positioning stud (8) through threaded matching.

3. A shape-variable magnetic safety net frame according to claim 2, characterized in that: The height dimension of the positive step groove (7) and the reverse step groove (10) is half of the thickness dimension of the corresponding transverse frame beam (2) or longitudinal frame beam (1).

4. The shape-variable magnetic safety net frame according to claim 1, characterized in that: The magnetic attraction structure comprises an end surface magnet block (3) fixed on the top end surface or the bottom end surface of the transverse frame beam (2) and the longitudinal frame beam (1); It also includes side magnet blocks (12) fixed on the outer side walls of the transverse frame beam (2) and the longitudinal frame beam (1).

5. The shape-variable magnetic safety net frame according to claim 1, characterized in that: The safety net (6) is a flame retardant safety net.

6. The shape-variable magnetic safety net frame according to claim 1, characterized in that: The transverse frame beam (2) and the longitudinal frame beam (1) have a variety of different models and can be selectively combined for use according to the size of the opening.

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