Grinding wheel fireproof strip capable of automatically rebounding

Abstract

The utility model discloses a grinding wheel fire-proof strip capable of rebounding automatically, which comprises a fire-proof cover and a fire-proof strip connected with the fire-proof cover, an adapter plate is fixed on the lower portion of the fire-proof cover, the inner end face of the adapter plate is fixedly connected with the outer surface of the fire-proof cover, an upper connecting plate is arranged on the outer end face of the adapter plate, and a lower connecting plate is arranged on the fire-proof strip. The upper connecting plate and the lower connecting plate are rotatably connected through a rotating shaft, the rotating shaft is sleeved with a torsional spring, and the two ends of the torsional spring are pressed on the upper connecting plate and the lower connecting plate respectively. The upper connecting plate is provided with a first mounting hole for mounting the rotating shaft, the lower connecting plate is provided with a second mounting hole for mounting the rotating shaft, and the rotating shaft penetrates through the first mounting hole and the second mounting hole. A boss is horizontally arranged on the fireproof strip and used for supporting the adapter plate. According to the utility model, automatic rebounding of the fireproof strip is realized, the spring force of the torsion spring is easy to adjust, the use requirements of the fireproof strip under multiple working conditions can be met, the structure is simple, the processing is easy, and the practicability is strong.

Description

Technical Field

[0001] The utility model belongs to the technical field of grinding wheel fireproof strips, and in particular relates to a grinding wheel fireproof strip which can automatically rebound. Background Art

[0002] With the rapid development of my country's high-speed railways, "seamless rails" are increasingly being laid on railways. In order to ensure that trains run at high speed, smoothly and safely, rail grinders are needed to trim the welds of seamless rails, thereby improving the straightness and smoothness of the rails and making their working surfaces meet the requirements for high-speed train operation. During the rail trimming and grinding process, a large number of sparks will be generated due to the high-speed grinding of the grinding wheel and the rail surface, which can easily cause accidents if not controlled. Therefore, the grinding wheel fireproof strip has become an indispensable protective part for track repair equipment.

[0003] There are usually two forms of manufacturing methods for traditional grinding wheel fireproof strips:

[0004] The first type is a fixed fireproof strip, such as Figure 1 As shown, the fireproof strip 102 is screwed together with the fireproof cover 101 on the outer periphery of the grinding wheel. The fireproof strip 102 is a complete metal plate, and the fireproof strip 102 and the grinding wheel fireproof cover 101 are fixed together by screws 103. When assembling the fixed fireproof strip, the fireproof strip 102 of a suitable height must be selected according to the rigidity of the rail. If the height is too low, the fireproof strip cannot control sparks. If it is too high, the fireproof strip 102 will interfere with the rail when the equipment deflects. Therefore, the fixed fireproof strip is not convenient for the equipment to use.

[0005] The second type is a tension spring fireproof strip, such as Figure 2 As shown, the fireproof strip 202 is connected to the fireproof cover 201 on the periphery of the grinding wheel through a rotating shaft, and the fireproof strip rebounds through a tension spring 203. The fixed lug 204 is welded around the fireproof cover 201 on the periphery of the grinding wheel by welding; the fireproof strip 202 is assembled into one piece through the rotating shaft and the fixed lug 204; one end of the tension spring 203 is fixed on the fireproof cover 201, and the other end is fixed on the fireproof strip 202, and the fireproof strip rebounds through the spring tension of the tension spring 203. The tension spring type fireproof strip needs to adapt to the corresponding tension spring model according to different environments, and has high requirements for the external dimensions of the fireproof strip, the selection of the tension spring, and the welding accuracy during manufacturing. The early test development cycle is long, the cost is high, and the process is cumbersome, which is not conducive to the manufacturing and production of mature batch products.

[0006] In view of the above problems existing in traditional grinding wheel fireproof strips, the grinding wheel fireproof strips need to be improved in the direction of easy processing, simple and reliable assembly, low cost and easy implementation in the short term. Utility Model Content

[0007] The purpose of the utility model is to overcome the disadvantages of the prior art and provide a grinding wheel fireproof strip which can automatically rebound.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A fireproof strip for a grinding wheel that can automatically rebound comprises a fireproof cover and a fireproof strip connected to the fireproof cover, wherein an adapter plate is fixed to the lower part of the fireproof cover, the inner end surface of the adapter plate is fixedly connected to the outer surface of the fireproof cover, an upper connecting plate is mounted on the outer end surface of the adapter plate, a lower connecting plate is mounted on the fireproof strip, the upper connecting plate and the lower connecting plate are rotatably connected via a rotating shaft, a torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring are respectively pressed on the upper connecting plate and the lower connecting plate.

[0010] The utility model realizes the deployment and automatic rebound of the fireproof strip through the torsion spring assembly, avoids the interference between the bottom of the fireproof strip and the side of the rail, and can automatically rebound after the protection is completed. The structure is simple and easy to manufacture and assemble, and the spring force of the torsion spring is easy to adjust, which can meet the multi-working condition use requirements of the fireproof strip and improve practicality.

[0011] Preferably, the upper connecting plate has a first mounting hole for mounting the rotating shaft, the lower connecting plate has a second mounting hole for mounting the rotating shaft, and the rotating shaft is inserted into the first mounting hole and the second mounting hole.

[0012] Preferably, a boss is horizontally arranged on the fireproof strip, and the boss is used to provide support for the adapter plate. By providing the boss, the fireproof strip is prevented from interfering with the grinding wheel when rebounding, thereby improving the structural stability. Preferably, the boss is made by cutting the fireproof strip and folding it inward. The rigid material of the fireproof strip is applied to the boss, which is convenient for providing strong support for the adapter plate. The design integrated with the fireproof strip is conducive to saving costs and improving manufacturability.

[0013] Preferably, the lower surface of the adapter plate is flush with the lower surface of the fireproof cover. Preferably, the upper surface of the adapter plate is flush with the upper edge of the fireproof strip, a notch is opened in the middle of the fireproof strip, the torsion spring is arranged in the notch, and the lower connecting plate is fixed on the fireproof strip below the notch. By setting the flush height, the gaps between the plates are filled, the stability and sealing of the device are improved, and the sealing can effectively block sparks and enhance the protection capability.

[0014] Preferably, the inner end surface of the adapter plate and the outer surface of the fireproof cover are in contact with each other.

[0015] Preferably, the adapter plate is fixedly connected to the upper connecting plate by a first screw, and the fireproof strip is fixedly connected to the lower connecting plate by a second screw.

[0016] In order to fully protect the equipment, there are two fireproof strips, which are symmetrically arranged on both sides of the fireproof cover.

[0017] The utility model has a simple structure and is easy to process, which reduces the difficulty of subsequent assembly and repair and saves costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a further detailed description of an automatic rebounding grinding wheel fireproof strip provided by the utility model in conjunction with the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the structure of a fixed fireproof strip;

[0020] Figure 2 It is a structural diagram of a tension spring type fireproof strip;

[0021] Figure 3 It is a structural schematic diagram of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the utility model when it is unfolded;

[0023] Figure 5 It is a structural schematic diagram of the torsion spring assembly of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the torsion spring of the utility model;

[0025] Figure 7 It is a structural schematic diagram of the fireproof strip of the utility model;

[0026] Figure 8 It is a schematic diagram of the utility model in a natural state when it is installed on a grinding wheel;

[0027] Fig. 9 It is a schematic diagram of the utility model when it is installed on a grinding wheel and the fireproof strip is unfolded.

[0028] Explanation of the reference numerals: 101 - fireproof cover, 102 - fireproof strip, 103 - screw, 201 - fireproof cover, 202 - fireproof strip, 203 - tension spring, 204 - fixing lug, 3 - fireproof cover, 4 - adapter plate, 5 - torsion spring assembly, 501 - upper connecting plate, 5011 - first mounting hole, 502 lower connecting plate, 5021 - second mounting hole, 503 - first screw, 504 - second screw, 505 - rotating shaft, 506 - torsion spring, 6 - fireproof strip, 601 - boss, 7 - rail, 8 - grinding wheel. DETAILED DESCRIPTION

[0029] like Figure 3As shown, the utility model provides an automatically rebounding grinding wheel fireproof strip, including a fireproof cover 3 and a fireproof strip 6 connected to the fireproof cover 3, wherein there are two fireproof strips 6, which are symmetrically arranged on both sides of the fireproof cover 3. An adapter plate 4 is fixed to the lower part of the fireproof cover 3, the lower surface of the adapter plate is flush with the lower surface of the fireproof cover 3, the outer surface of the fireproof cover 3 and the inner end surface of the adapter plate 4 are mutually fitted, and the inner end surface of the adapter plate 4 is welded to the outer surface of the fireproof cover 3. A torsion spring assembly 5 is fixed to the outer end surface of the adapter plate 4, and the structure of the torsion spring assembly 5 is as shown in FIG. Figure 5 The upper connecting plate 501 of the torsion spring assembly 5 is fixedly mounted on the outer end surface of the adapter plate 4 by means of a first screw 503, and the lower connecting plate 502 is fixedly mounted on the fireproof strip 6 by means of a second screw 504. The upper connecting plate 501 and the lower connecting plate 502 are rotatably connected by means of a rotating shaft 505. The upper connecting plate 501 has a first mounting hole 5011 for mounting the rotating shaft 505, and the lower connecting plate 502 has a second mounting hole 5021 for mounting the rotating shaft 505. The rotating shaft 505 is inserted into the first mounting hole 5011 and the second mounting hole 5021, and a torsion spring 506 is sleeved on the rotating shaft 505, as shown in FIG. Figure 6 As shown, the two ends of the torsion spring 506 are respectively pressed on the upper connecting plate 501 and the lower connecting plate 502. The torsion spring 506 is installed in the holes of the upper connecting plate 501 and the lower connecting plate 502 through the rotating shaft 505. The upper connecting plate 501 and the lower connecting plate 502 can rotate around the rotating shaft 505. The rotation rebound of the upper connecting plate 201 and the lower connecting plate 502 is achieved by the spring force of the torsion spring 506, and the spring force of the torsion spring 506 is easy to adjust. Figure 7 As shown, a boss is horizontally arranged on the fireproof strip 6, and the boss 601 is made by cutting the fireproof strip 6 and folding it inwards, which is used to provide support for the adapter plate 4, and the boss 601 can ensure that the fireproof strip 6 will not interfere with the grinding wheel 8 when rebounding. The upper surface of the adapter plate 4 is flush with the upper edge of the fireproof strip 6, and a notch is opened in the middle of the fireproof strip 6, and the rotating shaft 505 is arranged in the notch, and the lower connecting plate 502 is fixedly installed on the fireproof strip 6 below the notch.

[0030] In this embodiment, by making the lower surface of the adapter plate 4 level with the lower surface of the fireproof cover 3 and the upper surface of the adapter plate 4 level with the upper edge of the fireproof strip 6, the lower surface of the adapter plate 4, the upper surface of the boss 601 and the lower surface of the fireproof cover 3 of the grinding wheel fireproof strip in this embodiment are in the same plane when in a natural state, preventing gaps from allowing sparks to pass through, thereby increasing the shielding range and making the blocking more stringent. In addition, the plate-like structure of the lower connecting plate 502 and the upper connecting plate 501 is easy to match with the structure of the fireproof strip 6, which is conducive to shielding.

[0031] In this embodiment, Figure 3 and 8As shown, the fireproof cover 3 is arranged on the periphery of the grinding wheel 8, and the peripheral gap is uniform. The fireproof cover 3 is circular, and adapter plates 4 are welded on the left and right sides of the fireproof cover 3. The lower surface of the adapter plate 4 is aligned with the lower surface of the fireproof cover 3. The spring force of the torsion spring 506 of the torsion spring assembly 5 is adjusted according to the flipping requirement of the fireproof strip 6. After the torsion spring assembly 5 is adjusted, it is fixed to the adapter plate 4 and the fireproof strip 6 by the first screw 503 and the second screw 504 respectively. The upper surface of the boss 601 contacts the lower surface of the adapter plate 4, and the installation is completed. In the natural state, the upper connecting plate 501 and the lower connecting plate 502 of the torsion spring assembly 5 are parallel, and the angle between them is 180°. When the rail grinder trims the side of the rail 7, the bottom of the fireproof strip 6 interferes with the side of the rail 7. At this time, the fireproof strip 6 is subjected to tilting pressure, causing the torsion spring assembly 5 to be in a stressed state. In order to continue trimming the side of the rail 7, the fireproof strip 6 needs to be unfolded, as shown in FIG. Figure 4 and 9 When the rail correction and grinding operation is completed, the grinding wheel fireproof strip in this embodiment is removed from the grinding wheel, and the fireproof strip 6 automatically returns to the initial state due to the spring force of the torsion spring 506, without manual adjustment and retraction.

[0032] The utility model realizes the automatic rebound of the grinding wheel fireproof strip, which is convenient for the fireproof strip 6 to return to the initial state after the operation is completed. By assembling the fireproof strip 6 and the fireproof cover 3 into one body, the structural stability is improved, the protection capability is enhanced, and the angle adjustment and automatic rebound deployment and retraction of the fireproof strip 6 are realized through the torsion spring 506. The utility model is easy to process, simple and reliable to assemble, low in cost and easy to realize in the short term, can meet the use requirements of the grinding wheel fireproof strip under different working conditions, and has strong practicality.

[0033] The above are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

Claims

1. A grinding wheel fireproof strip capable of automatically rebounding, comprising a fireproof cover (3) and a fireproof strip (6) connected to the fireproof cover (3), characterized in that: An adapter plate (4) is fixed to the lower part of the fireproof cover (3), the inner end surface of the adapter plate (4) is fixedly connected to the outer surface of the fireproof cover (3), an upper connecting plate (501) is mounted on the outer end surface of the adapter plate (4), a lower connecting plate (502) is mounted on the fireproof strip (6), the upper connecting plate (501) and the lower connecting plate (502) are rotatably connected via a rotating shaft (505), a torsion spring (506) is sleeved on the rotating shaft (505), and two ends of the torsion spring (506) are respectively pressed on the upper connecting plate (501) and the lower connecting plate (502).

2. The automatically rebounding grinding wheel fireproof strip according to claim 1, characterized in that: The upper connecting plate (501) has a first mounting hole (5011) for mounting a rotating shaft (505), and the lower connecting plate (502) has a second mounting hole (5021) for mounting a rotating shaft (505), and the rotating shaft (505) is inserted into the first mounting hole (5011) and the second mounting hole (5021).

3. The fireproof strip for grinding wheel capable of automatically rebounding according to claim 1, characterized in that: A boss (601) is horizontally arranged on the fireproof strip (6), and the boss (601) is used to provide support for the adapter plate (4).

4. The automatically rebounding grinding wheel fireproof strip according to claim 1, characterized in that: The lower surface of the adapter plate (4) is flush with the lower surface of the fireproof cover (3).

5. The automatically rebounding grinding wheel fireproof strip according to claim 1, characterized in that: The upper surface of the adapter plate (4) is flush with the upper edge of the fireproof strip (6), a notch is provided in the middle of the fireproof strip (6), the rotating shaft (505) is arranged in the notch, and the lower connecting plate (502) is fixed to the fireproof strip (6) below the notch.

6. The automatically rebounding grinding wheel fireproof strip according to claim 3, characterized in that: The boss (601) is made by cutting a fireproof strip and then folding it inwards.

7. The automatically rebounding grinding wheel fireproof strip according to claim 1, characterized in that: The inner end surface of the adapter plate (4) and the outer surface of the fireproof cover (3) are in contact with each other.

8. The automatically rebounding grinding wheel fireproof strip according to claim 1, characterized in that: The adapter plate (4) is fixedly connected to the upper connecting plate (501) via a first screw (503).

9. The automatically rebounding grinding wheel fireproof strip according to claim 1, characterized in that: The fireproof strip (6) is fixedly connected to the lower connecting plate (502) via a second screw (504).

10. The automatically rebounding grinding wheel fireproof strip according to claim 1, characterized in that: There are two fireproof strips (6), which are symmetrically arranged on both sides of the fireproof cover (3).

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