Mining flame-proof dry-type transformer suitable for multiple gauges

Abstract

The utility model discloses a mining flame-proof type dry-type transformer suitable for multiple gauges, which relates to the technical field of coal mine safety and comprises a transformer body, two vertical plates are fixedly connected to the bottom end of the transformer body, two wheel shafts penetrate through the outer walls of the vertical plates, a plurality of through holes are formed in the tops of the two ends of each wheel shaft, and the through holes are communicated with the vertical plates. Limiting transverse strips are fixedly connected to the two side walls of the two ends of the wheel shaft, lantern rings are slidably connected to the outer walls of the limiting transverse strips, wheels are fixedly connected to one side walls of the lantern rings, a screw movably penetrates through the top ends of the lantern rings, and the bottom of the screw is movably sleeved with a nut in a threaded mode. By arranging a series of structures, the length of an original wheel axle is prevented from being increased, the connecting strength of the wheels and the wheel axle after the distance is adjusted can be increased, and therefore the stability of the wheels after the distance is adjusted is guaranteed, the distance between the wheels on the same wheel axle can be rapidly adjusted, and the time needed for adjusting the distance between the wheels is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mine safety, specifically to a multi-track gauge applicable mine explosion-proof dry-type transformer. BACKGROUND

[0002] The mine explosion-proof dry-type transformer is used in the place with explosion danger in the mine, and the main structural feature is that all joint surfaces of the box shell are made according to the explosion-proof requirement, and in order to make the mine explosion-proof dry-type transformer move better in the mine, a wheel with the same wheel track as the mine car wheel is usually installed at the bottom of the transformer, so that the transformer can move smoothly in the mine tunnel.

[0003] At present, in the mine transportation system, there are three different types of standard distances of the mine car track, if the wheel track at the bottom of the transformer cannot be adjusted and changed according to the different standards of the mine car track, the transformer is easily difficult to enter the mine tunnel through the bottom wheel due to the inadaptability to the mine car track, therefore, the transformer applicable to different mine car track distances appears, but when the distance of the wheel at the bottom of the existing transformer is adjusted, the wheel is disassembled from the wheel shaft, then the wheel with a longer connecting rod length is connected with the wheel shaft, this way makes the original length of the wheel shaft longer, the distance between the wheel and the center point of the original wheel shaft is far, the strength of the connection between the wheel and the wheel shaft cannot be guaranteed, the wheel is easily loose when rotating, which is not conducive to the stability of the transformer when moving, in addition, since the wheel distance involves the disassembly process when being replaced, and when the wheel is disassembled, the bottom of the transformer is not raised, so that the wheel is subjected to the downward gravity of the transformer when being disassembled, the process of disassembling the wheel is troublesome and time-consuming, and the distance adjustment of the wheel at the bottom of the transformer is not convenient. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a multi-track gauge applicable mine explosion-proof dry-type transformer to solve the problems in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a multi-track gauge applicable mine explosion-proof dry-type transformer, including transformer body, the bottom end of the transformer body is fixedly connected with two vertical plates, the outer wall of the vertical plate penetrates two wheel shafts, a plurality of through holes are arranged in the top of both ends of the wheel shaft, the side wall of the wheel shaft is fixedly connected with a limiting horizontal bar, the outer wall of the limiting horizontal bar is slidably connected with a sleeve ring, the side wall of the sleeve ring is fixedly connected with a wheel, the top end of the sleeve ring is movably penetrated by a screw rod, the bottom of the screw rod is movably threaded with a nut, the middle of the bottom end of the transformer body is fixedly connected with a bottom box, the inside of the bottom box is fixedly installed with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a supporting plate, the inner wall of the vertical plate is fixedly installed with an electric push rod.

[0006] Preferably, both ends of the axle are fixedly connected to limit plates, and the axle is rotatably connected to the vertical plate.

[0007] Preferably, a slip ring is fixedly connected to the side wall of the wheel away from the collar, and a sliding groove is provided in the middle of the slip ring.

[0008] Preferably, a slider is slidably connected to the inner side of the groove, the output end of the electric push rod is fixedly connected to the slider, and the slider is slidably connected to the slip ring through the groove.

[0009] Preferably, the screw is movably inserted into the through hole, and the collar is movably sleeved onto the wheel axle via the screw.

[0010] Preferably, the wheel is slidably connected to the axle via a collar and a limiting crossbar.

[0011] Preferably, the support plate is movably embedded in the base box via a hydraulic cylinder.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This multi-gauge explosion-proof dry-type transformer for mining uses a horizontal shaft, through holes, screws, collars, and nuts to allow the wheels at the bottom of the transformer to move horizontally left and right on the original horizontal shaft. This allows for adjustment of the distance between two wheels on the same axle, avoiding increasing the length of the original axle and ensuring that the wheels maintain their connection to the original axle. It also increases the strength of the connection between the wheels and the axle after the distance is adjusted, thus helping to ensure the stability of the wheels after the distance is adjusted.

[0014] 2. This multi-gauge explosion-proof dry-type transformer is applicable to mining applications. Through the base box, support plate, and hydraulic cylinder, the distance between the wheels at the bottom of the transformer can be adjusted by pushing the support plate out from the bottom of the base box by the hydraulic cylinder, which raises the transformer body as a whole and allows the wheels at the bottom of the transformer to be temporarily off the ground. Then, with the help of the electric push rod, the wheels are pushed along the horizontal axis, so that the distance between the wheels on the same axle can be adjusted quickly, thereby saving the time required to adjust the wheel distance. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Fig. 2 This is a schematic diagram of the vertical plate and support plate structure of this utility model;

[0017] Fig. 3 This is a schematic diagram of the collar and screw structure of this utility model;

[0018] Fig. 4This is a schematic diagram of the through hole and electric push rod structure of this utility model.

[0019] In the diagram: 1. Transformer body; 2. Limiting plate; 3. Through hole; 4. Axle; 5. Wheel; 6. Slip ring; 7. Slide groove; 8. Slider; 9. Vertical plate; 10. Electric push rod; 11. Collar; 12. Screw; 13. Limiting crossbar; 14. Base box; 15. Support plate; 16. Nut; 17. Hydraulic cylinder. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figs. 1 to 4As shown, this embodiment of the multi-gauge mine explosion-proof dry-type transformer includes a transformer body 1. Two vertical plates 9 are fixedly connected to the bottom of the transformer body 1. Two axles 4 pass through the outer wall of the vertical plates 9. Multiple through holes 3 are opened at the top of both ends of the axles 4. Limiting crossbars 13 are fixedly connected to both side walls of both ends of the axles 4. A collar 11 is slidably connected to the outer wall of the limiting crossbar 13. A wheel 5 is fixedly connected to one side wall of the collar 11. A screw 12 is movably passed through the top of the collar 11. A nut 16 is movably threaded on the bottom of the screw 12. A bottom box 14 is fixedly connected to the middle of the bottom of the transformer body 1. A hydraulic cylinder 17 is fixedly installed inside the bottom box 14. A support plate 15 is fixedly connected to the output end of the hydraulic cylinder 17. An electric push rod 10 is fixedly installed on the inner wall of the vertical plates 9.

[0024] Specifically, the vertical plate 9 enables the axle 4 to be effectively connected to the bottom of the transformer body 1, allowing the transformer to connect to the wheel 5 via the axle 4. The bottoms of the two vertical plates 9 are higher than the horizontal level of the bottom of the wheel 5, preventing the vertical plates 9 from easily contacting the ground. The axle 4 enables the wheel 5 to rotate at the bottom of the transformer. The inner diameter of the through hole 3 is larger than the outer diameter of the screw 12, allowing the screw 12 to pass smoothly through the through hole 3. The limiting crossbar 13 ensures that the wheel 5 can only slide horizontally on the axle 4, preventing relative rotation with the axle 4, thus ensuring that the axle 4 can drive the wheel 5 to rotate. The length of the limiting crossbar 13 is one-third of the length of the axle 4 and does not interfere with the rotation of the axle 4 on the vertical plate 9. The inner diameter of the collar 11 matches the outer diameter of the axle 4, allowing the collar 11 to... The wheel 5 slides on the axle 4, and the top of the collar 11 also has a through hole 3, so that the screw 12 can pass through the collar 11 and the through hole 3 on the axle 4 at the same time, thereby locking the wheel 5 and the axle 4. The screw 12 and the nut 16 can lock the collar 11 and the axle 4, thereby achieving synchronous rotation of the wheel 5 and the axle 4. The bottom box 14 protects the hydraulic cylinder 17. The bottom end of the support plate 15 is fixedly connected to the anti-slip pad, which supports the transformer body 1, so as to facilitate the adjustment of the spacing of the wheels 5 at the bottom of the transformer body 1. There are four electric push rods 10, which are installed at the four bottom corners of the vertical plate 9 and connected to the same controller, so that the sliding of the wheel 5 on the axle 4 can be synchronized, thereby speeding up the adjustment of the wheel spacing and saving the time of wheel spacing adjustment.

[0025] Furthermore, limit plates 2 are fixedly connected to both ends of the axle 4, the axle 4 is rotatably connected to the vertical plate 9, and the wheel 5 can rotate along both sides of the vertical plate 9 via the axle 4, thereby enabling the transformer body 1 to move on the mine car track via the axle 4 and the wheel 5.

[0026] Furthermore, a sliding ring 6 is fixedly connected to the side wall of the wheel 5 away from the collar 11. A groove 7 is provided in the middle of the sliding ring 6. The cross-section of the groove 7 is "convex" shaped, which is the same as the cross-section of the slider 8, so that the slider 8 can slide smoothly in the groove 7, thereby facilitating the connection between the slider 8 and the wheel 5.

[0027] Furthermore, a slider 8 is slidably connected to the inner side of the groove 7. The output end of the electric push rod 10 is fixedly connected to the slider 8. The slider 8 is slidably connected to the slip ring 6 through the groove 7. The function of the slider 8 is to ensure that the output end of the electric push rod 10 can maintain its connection with the slip ring 6, while reducing the interference caused by the electric push rod 10 to the rotation of the wheel 5.

[0028] Furthermore, the screw 12 is movably inserted into the through hole 3, and the collar 11 is movably sleeved and connected to the wheel axle 4 through the screw 12. After the screw 12 passes through the through hole 3, it can keep the collar 11 and the wheel axle 4 in a relatively stationary state, thereby achieving temporary locking of the wheel 5 on the wheel axle 4.

[0029] Furthermore, the wheel 5 is slidably connected to the axle 4 via the collar 11 and the limiting crossbar 13. The limiting crossbar 13 is located at both ends of the axle 4, and its end is located on one side of the vertical plate 9. It will not interfere with the rotation of the axle 4 on the vertical plate 9. The function of the limiting crossbar 13 is to prevent the wheel 5 from rotating relative to the axle 4, so that the wheel 5 can only slide horizontally on the axle 4.

[0030] Furthermore, the support plate 15 is movably embedded and connected to the bottom box 14 via the hydraulic cylinder 17. The function of the support plate 15 is to lift the transformer body 1 off the ground under the action of the hydraulic cylinder 17 after it comes into contact with the ground, thereby facilitating the replacement of the wheels 5 at the bottom of the transformer body 1.

[0031] The usage method of this embodiment is as follows: When it is necessary to adjust the spacing of the wheels 5 on the same axle 4 at the bottom of the transformer body 1, the hydraulic cylinder 17 can be activated first, causing the support plate 15 at the bottom of the base box 14 to move towards the ground. After the support plate 15 contacts the ground, the transformer body 1 will be raised under the reverse thrust of the hydraulic cylinder 17. At this time, the wheels 5 at the bottom of the transformer body 1 will be removed from the ground or track. Then, the electric push rod 10 at the corresponding position on the vertical plate 9 can be activated simultaneously through the controller, so that the electric push rod 10 pushes the wheels 5 along the outer surface of the axle 4 via the slider 8. The sliding of the limiting bar 13 causes the distance between the two wheels 5 on the same axle 4 to increase or decrease. When the wheel 5 is pushed to the set position, the distance between the wheels 5 will match the distance of the mine car track. Then, the screw 12 can be inserted into the through hole 3 at the top of the collar 11. Then, the screw 12 will pass through the bottom of the through hole 3 on the axle 4. Then, the nut 16 can be tightened at the bottom of the screw 12. At this time, the wheel 5 is temporarily locked and fixed on the axle 4. Finally, the transformer body 1, which has completed the adjustment of the wheel 5 distance, can be pushed to move on the track with the appropriate gauge.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-gauge explosion-proof dry-type transformer suitable for mining, comprising a transformer body (1), characterized in that: Two vertical plates (9) are fixedly connected to the bottom of the transformer body (1). Two axles (4) pass through the outer wall of the vertical plate (9). Multiple through holes (3) are opened at the top of both ends of the axle (4). Limiting crossbars (13) are fixedly connected to both sides of the axle (4). A collar (11) is slidably connected to the outer wall of the limiting crossbar (13). A wheel (5) is fixedly connected to one side wall of the collar (11). A screw (12) is movably passed through the top of the collar (11). A nut (16) is movably threaded at the bottom of the screw (12). A bottom box (14) is fixedly connected to the middle of the bottom of the transformer body (1). A hydraulic cylinder (17) is fixedly installed inside the bottom box (14). A support plate (15) is fixedly connected to the output end of the hydraulic cylinder (17). An electric push rod (10) is fixedly installed on the inner wall of the vertical plate (9).

2. The multi-gauge explosion-proof dry-type transformer for mining applications according to claim 1, characterized in that: Both ends of the axle (4) are fixedly connected to limit plates (2), and the axle (4) is rotatably connected to the vertical plate (9).

3. The multi-gauge explosion-proof dry-type transformer for mining applications according to claim 1, characterized in that: A slip ring (6) is fixedly connected to the side wall of the wheel (5) away from the collar (11), and a slip groove (7) is provided in the middle of the slip ring (6).

4. A multi-gauge explosion-proof dry-type transformer for mining applications according to claim 3, characterized in that: A slider (8) is slidably connected to the inner side of the groove (7), and the output end of the electric push rod (10) is fixedly connected to the slider (8). The slider (8) is slidably connected to the slip ring (6) through the groove (7).

5. A multi-gauge explosion-proof dry-type transformer for mining applications according to claim 1, characterized in that: The screw (12) is movably inserted into the through hole (3), and the collar (11) is movably sleeved and connected to the axle (4) through the screw (12).

6. A multi-gauge explosion-proof dry-type transformer for mining applications according to claim 1, characterized in that: The wheel (5) is slidably connected to the axle (4) via a collar (11) and a limiting crossbar (13).

7. A multi-gauge explosion-proof dry-type transformer for mining applications according to claim 1, characterized in that: The support plate (15) is movably embedded in the base box (14) via a hydraulic cylinder (17).

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