A vibration-absorbing fixed installation structure for a mine frequency converter

Abstract

The present invention discloses a shock-absorbing fixed installation structure for a mine frequency converter, which relates to the field of frequency converters, including a ground pile and a transformer cabinet, wherein a buffer assembly is arranged on the outside of the transformer cabinet; a torsion assembly connected to the buffer assembly is arranged on the top of the ground pile; a rectangular pit is arranged on the side wall of the mine, and a fire curtain is arranged at the opening of the rectangular pit; the buffer assembly includes a top seat above the transformer cabinet and a base below the transformer cabinet, and channel steels are arranged on the upper and lower parts of the transformer cabinet. In the present invention, the connection between the transformer cabinet and the two channel steels at the upper and lower parts is a rigid connection. After the position of the transformer cabinet is fixed, the rubber column surrounding the top of the support beam is inserted into the interior of the channel steel, and the staff then fixes the sealing steel plate at the opening of the channel steel by bolts, so that the rubber column and the channel steel are in direct contact, and the vibration generated in the external environment will not be transmitted to the transformer cabinet, thereby achieving the effect of efficient shock absorption.

Description

Technical Field

[0001] The invention relates to the field of frequency converters, in particular to a vibration-absorbing fixed installation structure of a frequency converter for mining. Background Art

[0002] With the development of industrial technology, modern frequency converters are becoming more and more perfect. Frequency converters for mining need to work in the environment of underground mines. There is a lot of ore dust in the environment of underground mines. These ore dusts floating in the air may have a certain impact on the electronic circuits inside the frequency converter. In addition, the coal dust floating in the air inside the coal mine may cause explosions, and the frequency converters for mining may also be damaged in the explosions.

[0003] A dustproof shock absorber as proposed in patent No. 201920996652.3 includes an oil storage cylinder, an inner tube is arranged in the oil storage cylinder, a flow channel communicating with the inner tube is arranged between the inner tube and the oil storage cylinder, a piston is slidably arranged in the inner tube, a piston rod extending out of the oil storage cylinder is connected to the piston, a lifting ring is connected to the end of the piston rod, a spring pad is arranged on the oil storage cylinder, a first spring located between the spring pad and the lifting ring is sleeved on the connecting rod, a soft first protective cover is sleeved on the oil storage cylinder, one end of the first protective cover is connected to the lifting ring, the other end of the first protective cover is connected to the spring pad, and the first spring is arranged in the first protective cover; it can prevent the piston rod from being directly worn by external debris, and reduce the wear of the piston rod;

[0004] The invention has the following defects when in use. First, the device uses a spring as a shock-absorbing component. After long-term use, the spring material will produce metal fatigue, and then the spring component will lose its elasticity or even break. Second, the shock-absorbing device and its structure are relatively loose. When used in a dusty environment, the dust in the metal gap will combine with the lubricating oil to form a paste-like debris, which affects the performance of the shock absorber. Summary of the invention

[0005] The present invention provides a vibration-absorbing fixed installation structure for a mining inverter. The transformer cabinet and two upper and lower channel steels are connected in a rigid manner. After the position of the transformer cabinet is fixed, the rubber column surrounding the top of the support beam is inserted into the interior of the channel steel, and the staff then fixes the sealing steel plate at the opening of the channel steel by bolts, so that the rubber column and the channel steel are in direct contact, and the vibration generated in the external environment will not be transmitted to the transformer cabinet, thereby achieving an efficient vibration reduction effect and solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A vibration-absorbing fixed installation structure for a mine frequency converter comprises a ground pile and a transformer cabinet, wherein the ground pile is fixedly connected to the ground of a mine, and a buffer assembly is arranged on the outer side of the transformer cabinet; a torsion assembly connected to the buffer assembly is arranged on the top of the ground pile; a rectangular pit is arranged on the side wall of the mine, and a fire curtain is arranged at the opening of the rectangular pit; the buffer assembly comprises a top seat above the transformer cabinet and a base below the transformer cabinet, and the base and the top seat are fixedly connected and assembled by vertical plates, channel steels are arranged on the upper and lower sides of the transformer cabinet, and the upper and lower side walls of the transformer cabinet are fixedly connected by assembling angle steels and two channel steels, and four groups of soft support assemblies are arranged on the top of the base and the bottom of the top seat, and the four groups of soft support assemblies are arranged on the top of the base and the bottom of the top seat. The other end of the soft support assembly is fixedly connected to the side wall of the channel steel, and the torsion assembly includes a gear plate at the bottom of the base, and two shaft seats are arranged at the top of the ground pile. The torsion shaft of the gear plate is rotatably inserted in the top of the shaft seat, and a reduction drive mechanism is arranged on one side of the gear plate, and the reduction drive mechanism includes a reduction motor fixedly arranged on the top of the ground pile, and a reduction gear is installed at the output end of the reduction motor, and the reduction gear and the gear plate are meshed with each other; the soft support assembly includes two surrounding support beams, and the outer ends of the surrounding support beams are fixedly connected to the side walls of the base and the top seat respectively by bolts, and the inner end of the surrounding support beam is provided with a rubber column, and the rubber column is inserted in the interior of the channel steel, and a sealing mechanism is arranged outside the notch of the channel steel.

[0008] Furthermore, the blocking mechanism includes a blocking steel plate, the blocking steel plate and the inner wall of the notch of the channel steel are fixedly connected by bolts, and the blocking steel plate is attached to the outer wall of the rubber column.

[0009] Furthermore, the left and right ends of the blocking steel plate are attached to the side walls surrounding the support beam.

[0010] Furthermore, the fireproof curtain includes a winding shaft and a fireproof cloth. The winding shaft is arranged above the rectangular pit opening on the side wall of the mine. The winding shaft is connected to a winding motor. The fireproof cloth is wound to the outside of the winding shaft. A counterweight lead strip is arranged at the bottom of the fireproof cloth.

[0011] Furthermore, the fireproof cloth comprises a three-layer structure, the upper layer structure of the fireproof cloth is a wire mesh layer, the middle layer structure of the fireproof cloth is a glass fiber layer, and the lower layer of the fireproof cloth is a ceramic fiber cloth.

[0012] As a preferred technical solution of a vibration-absorbing fixed installation structure of a mining inverter of the present invention,

[0013] The present invention has the following benefits:

[0014] Firstly, the transformer cabinet and the two upper and lower channel steels are connected in a rigid manner. After the position of the transformer cabinet is fixed, the rubber column surrounding the top of the support beam is inserted into the interior of the channel steel, and the staff then fixes the sealing steel plate at the opening of the channel steel with bolts. Then, the rubber column and the channel steel are in direct contact, and the vibration generated in the external environment will not be transmitted to the transformer cabinet, thereby achieving a high-efficiency shock absorption effect. Compared with the spring shock absorption in the prior art, the spring will have metal fatigue after long-term use, which causes the shock absorption effect of the shock absorbing device to become worse and worse. The shock absorbing device of the present invention can be used for a long time.

[0015] Secondly, the reduction motor drives the gear plate to rotate through the reduction gear, and the transformer cabinet and its upper and lower bases and top seats will also twist ninety degrees. The transformer cabinet will lie inside the rectangular pit, and the fire curtain outside the rectangular pit will fall down to block the opening of the rectangular pit. The coal powder under the mine cannot drift into the inside of the rectangular pit. If a coal powder explosion occurs, the fire curtain will also block the external flame from burning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The diagram is a front view of a vibration-absorbing fixed installation structure for a mine frequency converter.

[0017] Figure 2 The figure is a schematic diagram of the side view of a vibration-absorbing fixed installation structure of a mine frequency converter.

[0018] Figure 3 The schematic diagram is a structural diagram of a vibration-absorbing fixed installation structure of a mine frequency converter when viewed from above.

[0019] Figure 4 The schematic diagram is a structural diagram of a ground pile in a vibration-absorbing fixed installation structure of a mine frequency converter.

[0020] Figure 5 The present invention is a schematic diagram of a cross-section of a vibration-absorbing fixed installation structure of a mine frequency converter.

[0021] Figure 6 The schematic diagram is a structural diagram of a transformer cabinet in a vibration-absorbing fixed installation structure of a mine frequency converter.

[0022] Figure 7 The figure is a schematic diagram of the structure of a rubber column in a vibration-absorbing fixed installation structure of a mining inverter.

[0023] In the figure: ground pile 1, base 2, top seat 3, vertical plate 4, transformer cabinet 5, assembly angle steel 501, shaft seat 6, reduction motor 7, reduction gear 701, gear plate 8, surrounding support beam 9, rubber column 901, channel steel 10, and sealing steel plate 1001. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0025] It should be noted that the directions or positional relationships indicated by terms such as “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0026] See also Figure 1-7 A shock-absorbing fixed installation structure for a mine frequency converter comprises a ground pile 1 and a transformer cabinet 5, wherein the ground pile 1 is fixedly connected to the ground of a mine, and a buffer assembly is arranged on the outer side of the transformer cabinet 5; a torsion assembly connected to the buffer assembly is arranged on the top of the ground pile 1; a rectangular pit is arranged on the side wall of the mine, and a fire curtain is arranged at the opening of the rectangular pit; the buffer assembly comprises a top seat 3 above the transformer cabinet 5 and a base 2 below the transformer cabinet 5, and the base 2 and the top seat 3 are fixedly connected and assembled by a vertical plate 4, and channel steels 10 are arranged on the upper and lower sides of the transformer cabinet 5, and the upper and lower side walls of the transformer cabinet 5 are fixedly connected to the two channel steels 10 by assembling angle steels 501, and the top end of the base 2 and the bottom end of the top seat 3 are provided with Four groups of soft support components are provided, and the other ends of the four groups of soft support components are fixedly connected to the side walls of the channel steel 10. The base 2, the top seat 3 and the transformer cabinet 5 in the middle can be twisted and lie flat, so as to provide avoidance space in the narrow space under the mine. Compared with the transformer cabinet 5 in the prior art, when the transformer cabinet 5 is installed in the mine, the position of the transformer cabinet 5 is fixed, and the space under the mine is relatively small. The transformer cabinet 5 will occupy a large space in the mine, and the work of the operators in the mine will also be affected by the transformer cabinet 5. The base 2, the top seat 3 and the transformer cabinet 5 in the middle of the present invention can be twisted and lie flat to enter the inside of the rectangular pit to provide sufficient operating space for the mine.

[0027] The soft support assembly includes two surrounding support beams 9, the outer ends of the surrounding support beams 9 are fixedly connected to the side walls of the base 2 and the top seat 3 by bolts, the inner ends of the surrounding support beams 9 are provided with rubber columns 901, the rubber columns 901 are inserted into the interior of the channel steel 10, and the notch of the channel steel 10 is provided with a blocking mechanism. The transformer cabinet 5 and the two upper and lower channel steels 10 are connected in a rigid connection. After the position of the transformer cabinet 5 is fixed, the rubber column 901 at the top of the surrounding support beam 9 is inserted into the interior of the channel steel 10, so that the rubber column 901 and the channel steel 10 are in direct contact, and the vibration generated in the external environment will not be transmitted to the transformer cabinet 5, thereby achieving the effect of efficient shock absorption. Compared with the spring shock absorption of the prior art, the spring will have metal fatigue after long-term use, which causes the shock absorption effect of the shock absorbing device to become worse and worse. The shock absorbing device of the present invention can be used for a long time, and the rubber column 901 made of rubber material takes a long time to oxidize and degrade, and the oxidation and degrading time of the rubber column 901 is longer than the fatigue damage time of the spring, so the rubber column 901 can be used for a long time.

[0028] The sealing mechanism includes a sealing steel plate 1001, which is fixedly connected to the inner wall of the notch of the channel steel 10 by bolts. The sealing steel plate 1001 is attached to the outer wall of the rubber column 901. After the rubber column 901 and the two channel steels 10 are fixedly connected, the sealing steel plate 1001 is attached to the rubber column 901 and is fixedly connected to the inner wall of the notch of the channel steel 10 by bolts. This limits the position of the rubber column 901. When the channel steel 10 shakes, the rubber column 901 will not fall out from the inside of the two channel steels 10.

[0029] The left and right ends of the blocking steel plate 1001 are attached to the side walls surrounding the support beam 9 . The blocking steel plate 1001 abuts against the side walls of the support beam 9 to limit the support beam 9 and the rubber column 901 from sliding left and right relative to the channel steel 10 .

[0030] The torsion assembly includes a gear plate 8 at the bottom of the base 2, and two shaft seats 6 are arranged at the top of the ground pile 1. The torsion shaft of the gear plate 8 is rotatably inserted in the top of the shaft seat 6. A reduction drive mechanism is arranged on one side of the gear plate 8. The reduction drive mechanism can drive the gear plate 8 and the base 2 to twist by ninety degrees. The torsion mechanism can also adopt the torsion method of a hydraulic press, hinge one side edge of the base 2 and the ground pile 1, and then connect the other edge of the base 2 to a rotatable hydraulic press. When the rotatable hydraulic press contracts, the base 2, the top seat 3 and the transformer cabinet 5 in the middle can be twisted and laid down.

[0031] The reduction drive mechanism includes a reduction motor 7 fixedly arranged on the top of the ground pile 1, and a reduction gear 701 is installed at the output end of the reduction motor 7. The reduction gear 701 and the gear plate 8 are meshed with each other. The reduction motor 7 drives the gear plate 8 to rotate through the reduction gear 701, and the transformer cabinet and the base and top seat above and below it will also twist ninety degrees. The staff will assemble the reduction gear 701 and the gear plate 8 according to the requirements of the construction. If the base 2, the top seat 3 and the transformer cabinet 5 in the middle are relatively heavy, then replace the large-sized reduction gear 701 and the gear plate 8, and select the reduction gear 701 and the gear plate 8 with a smaller tooth number ratio.

[0032] The fireproof curtain includes a winding shaft and a fireproof cloth. The winding shaft is arranged above the opening of the rectangular pit on the side wall of the mine, and the winding shaft is connected to the winding motor. The fireproof cloth is wound to the outside of the winding shaft. A counterweight lead strip is arranged at the bottom of the fireproof cloth. The transformer cabinet 5 will lie inside the rectangular pit, and the fireproof curtain outside the rectangular pit will fall down to block the opening of the rectangular pit. The coal powder under the mine cannot drift into the inside of the rectangular pit. If an explosion accident occurs in the coal powder, the fireproof curtain will also block the external flame from burning. The equipment can be twisted into the inside of the rectangular pit without occupying the aisle space under the mine. Every time the staff connects wires or maintains the equipment, the reduction motor 7 drives the gear plate 8 to rotate through the reduction gear 701, and the transformer cabinet 5 and the base 2 and top seat 3 above and below it will also reverse ninety degrees until the transformer cabinet 5 and the base 2 and top seat 3 above and below it are separated from the rectangular pit.

[0033] The fireproof cloth comprises a three-layer structure, wherein the upper layer structure of the fireproof cloth is a wire mesh layer, the middle layer structure of the fireproof cloth is a glass fiber layer, and the lower layer of the fireproof cloth is a ceramic fiber cloth. When the flame outside the fireproof cloth is burning, the flame outside the fireproof cloth will be isolated by the fireproof cloth, thereby effectively protecting the transformer cabinet 5 inside the rectangular pit from burning damage. The inner layer structure of the fireproof cloth is a wire mesh layer, which can increase the strength of the fireproof cloth and prevent the explosion impact in the mine from destroying the fireproof cloth.

[0034] Working principle: the base 2, the top seat 3 and the transformer cabinet 5 in the middle can be twisted and laid flat, so as to provide avoidance space in the narrow space under the mine. Compared with the transformer cabinet 5 in the prior art, when the transformer cabinet 5 was installed in the mine, the position of the transformer cabinet 5 was fixed. The space under the mine was relatively small, and the transformer cabinet 5 would occupy a large space in the mine. The work of the operators in the mine would also be affected by the transformer cabinet 5. The base 2, the top seat 3 and the transformer cabinet 5 in the middle of the present invention can be twisted and laid flat to enter the rectangular pit to provide sufficient operating space for the mine. The connection method between the transformer cabinet 5 and the two upper and lower channel steels 10 is rigid connection. 5 is fixed, the rubber column 901 surrounding the top of the support beam 9 is inserted into the interior of the channel steel 10, and the rubber column 901 is in direct contact with the channel steel 10, and the vibration generated in the external environment will not be transmitted to the transformer cabinet 5, thereby achieving a high-efficiency shock absorption effect. Compared with the spring shock absorption of the prior art, the spring will have metal fatigue after long-term use, which causes the shock absorption effect of the shock absorbing device to become worse and worse. The shock absorbing device of the present invention can be used for a long time, and the rubber column 901 made of rubber material takes a long time to oxidize and deteriorate. The oxidation and deterioration time of the rubber column 901 is longer than the fatigue damage time of the spring, and thus the rubber column 901 can be used for a long time. After the rubber column 901 is fixedly connected to the two channel steels 10, the sealing The steel plate 1001 is fitted to the rubber column 901 and is fixedly connected to the inner wall of the notch of the channel steel 10 by bolts, which limits the position of the rubber column 901. When the channel steel 10 shakes, the rubber column 901 will not detach from the inside of the two channel steels 10. The blocking steel plate 1001 abuts against the side wall of the support beam 9 to limit the support beam 9 and the rubber column 901 from sliding left and right relative to the channel steel 10. The reduction drive mechanism can drive the gear plate 8 and the base 2 to twist ninety degrees. The twisting mechanism can also adopt the twisting method of a hydraulic press to hinge one side edge of the base 2 and the ground pile 1, and then connect the other edge of the base 2 to a rotatable hydraulic press. When the rotatable hydraulic press contracts, the base 2, the top seat 3 and the middle thereof can be twisted. The transformer cabinet 5 is twisted and lies down, and the reduction motor 7 drives the gear plate 8 to rotate through the reduction gear 701. The transformer cabinet and the base and top seat above and below it will also twist ninety degrees. The staff will assemble the reduction gear 701 and the gear plate 8 according to the requirements of the construction. If the base 2, the top seat 3 and the transformer cabinet 5 in the middle are relatively heavy, then replace the large-sized reduction gear 701 and the gear plate 8, and choose the reduction gear 701 and the gear plate 8 with a smaller tooth ratio. The transformer cabinet 5 will lie inside the rectangular pit, and the fire curtain outside the rectangular pit will fall down to block the opening of the rectangular pit. The coal powder under the mine cannot drift into the inside of the rectangular pit. If the coal powder explodes, the fire curtain will also block the external flame from burning.The equipment can be twisted into the rectangular pit without occupying the corridor space under the mine. Every time the staff connects wires or maintains the equipment, the reduction motor 7 drives the gear plate 8 to rotate through the reduction gear 701, and the transformer cabinet 5 and the base 2 and top seat 3 above and below it will also reverse ninety degrees until the transformer cabinet 5 and the base 2 and top seat 3 above and below it are separated from the rectangular pit. When the flame outside the fireproof cloth is burning, the flame outside the fireproof cloth will be isolated by the fireproof cloth, which can effectively protect the transformer cabinet 5 inside the rectangular pit from burning damage. The inner layer structure of the fireproof cloth is a wire mesh layer, which can increase the strength of the fireproof cloth and prevent the explosion impact under the mine from destroying the fireproof cloth.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibration-absorbing fixed installation structure for a mining frequency converter, characterized in that: It comprises a ground pile (1) and a transformer cabinet (5), wherein the ground pile (1) is fixedly connected to the ground of a mine, and a buffer component is arranged on the outer side of the transformer cabinet (5); A torsion component connected to the buffer component is provided at the top end of the ground pile (1); A rectangular pit is provided on the side wall of the mine, and a fire curtain is provided at the opening of the rectangular pit; The buffer assembly comprises a top seat (3) above the transformer cabinet (5) and a base (2) below the transformer cabinet (5); the base (2) and the top seat (3) are fixedly connected and assembled via a vertical plate (4); channel steels (10) are arranged at the upper and lower parts of the transformer cabinet (5); the upper and lower side walls of the transformer cabinet (5) are fixedly connected via an assembled angle steel (501) and two channel steels (10); four groups of soft support assemblies are arranged at the top end of the base (2) and the bottom end of the top seat (3); and the other ends of the four groups of soft support assemblies are fixedly connected to the side walls of the channel steel (10); The torsion assembly comprises a gear plate (8) at the bottom of the base (2), two shaft seats (6) are arranged at the top of the ground pile (1), the torque shaft of the gear plate (8) is rotatably inserted into the top of the shaft seat (6), and a reduction drive mechanism is arranged on one side of the gear plate (8); The deceleration drive mechanism comprises a deceleration motor (7) fixedly arranged on the top of the ground pile (1), a deceleration gear (701) is installed at the output end of the deceleration motor (7), and the deceleration gear (701) and the gear plate (8) are meshed with each other; The soft support column assembly comprises two surrounding support beams (9), the outer ends of the surrounding support beams (9) are fixedly connected to the side walls of the base (2) and the top seat (3) respectively by bolts, the inner ends of the surrounding support beams (9) are provided with rubber columns (901), the rubber columns (901) are inserted into the interior of the channel steel (10), and a sealing mechanism is provided outside the notch of the channel steel (10).

2. A vibration-absorbing fixed installation structure for a mining frequency converter according to claim 1, characterized in that: The blocking mechanism comprises a blocking steel plate (1001), the blocking steel plate (1001) and the inner wall of the notch of the channel steel (10) are fixedly connected by bolts, and the blocking steel plate (1001) is attached to the outer wall of the rubber column (901).

3. A vibration-absorbing fixed installation structure for a mining frequency converter according to claim 2, characterized in that: The left and right ends of the blocking steel plate (1001) are attached to the side walls surrounding the support beam (9).

4. The vibration-absorbing fixed installation structure of a mining frequency converter according to claim 1 is characterized in that: The fireproof curtain includes a reel and a fireproof cloth. The reel is arranged above the rectangular pit opening on the side wall of the mine. The reel is connected to the reel motor. The fireproof cloth is wound to the outside of the reel. A counterweight lead strip is arranged at the bottom of the fireproof cloth.

5. A vibration-absorbing fixed installation structure for a mining frequency converter according to claim 4, characterized in that: The fireproof cloth comprises a three-layer structure, the upper layer structure of the fireproof cloth is a wire mesh layer, the middle layer structure of the fireproof cloth is a glass fiber layer, and the lower layer of the fireproof cloth is a ceramic fiber cloth.

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