Transformer maintenance device

Abstract

The application belongs to the technical field of distribution transformer, and discloses a transformer maintenance device. The transformer maintenance device comprises a containing frame, a containing tank, a filtering structure, a driving mechanism, a cleaning structure and a plurality of heat dissipation pipes. The transformer is arranged in the containing frame. The filtering structure and the cleaning structure are matched with each other to clean and maintain the heat dissipation pipes, and the collection box is arranged to facilitate replacement of the heat conduction medium in the heat dissipation pipes. Meanwhile, the filter screen can effectively filter impurities in the heat conduction medium in the heat dissipation pipes, so as to ensure the heat dissipation efficiency. The brush plate assembly and the transmission assembly are matched with each other, and do not need an external driving device. The heat dissipation fan of the transformer can drive the brush plate to reciprocate between the adjacent two heat dissipation pipes, so as to carry out the sundries stuck between the adjacent two heat dissipation pipes, so as to achieve the cleaning effect, ensure the transformer maintenance efficiency, and greatly reduce the manual work amount.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power distribution transformers, and particularly relates to a transformer maintenance device. BACKGROUND

[0002] Although the power distribution transformer is provided with good heat dissipation effect, it is usually installed at a high altitude position, and it is inconvenient to clean and maintain in the high-altitude environment, so that dust and sundries are easily adhered to the position of the heat dissipation pipe. The sundries and dust accumulated in the position of the heat dissipation pipe can easily cause the air to be unable to circulate to dissipate heat inside. In the high-altitude environment, it is more cumbersome for workers to clean the sundries and maintain the equipment, and workers need to climb to the high-altitude position for maintenance and cleaning.

[0003] In the prior art, a maintenance device is configured for the transformer to realize automatic cleaning and maintenance of the transformer. However, the transformer maintenance device in the prior art can only clean the sundries in the gap of the heat dissipation pipe, and cannot maintain the heat-conducting medium in the heat dissipation pipe. Workers still need to regularly replace the heat-conducting medium, and the operation process of replacing the heat-conducting medium is complicated and low in efficiency. SUMMARY

[0004] The present application aims to provide a transformer maintenance device which can reduce the replacement frequency of the heat-conducting medium in the heat dissipation pipe of the transformer and reduce the work amount of workers.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] The transformer maintenance device comprises:

[0007] A containing frame, in which the transformer is arranged;

[0008] A plurality of heat dissipation pipes are arranged on the side wall of the containing frame along a first horizontal direction, and two adjacent heat dissipation pipes are in communication with each other;

[0009] A containing tank configured to contain a heat-conducting medium, one end of the containing tank being in communication with one heat dissipation pipe and the other end being in communication with another heat dissipation pipe;

[0010] A filter structure comprising a collection box and a filter screen, the collection box being detachably arranged between the heat dissipation pipe and the containing tank, and the filter screen being detachably arranged in the collection box;

[0011] A driving mechanism configured to drive the heat-conducting medium to circulate between the containing tank, the filter structure and the plurality of heat dissipation pipes;

[0012] The cleaning structure includes a brush plate assembly and a transmission assembly. The brush plate assembly includes a plurality of brush plates spaced apart along the first horizontal direction. Each brush plate is located between two adjacent heat dissipation pipes. The transmission assembly is configured to transmit the driving force generated when the transformer's cooling fan rotates to the brush plate. When the cooling fan rotates, the brush plate can reciprocate in the vertical direction.

[0013] Preferably, the transmission assembly includes:

[0014] A first drive shaft extends along the first horizontal direction and is fixedly disposed relative to the rotating shaft of the cooling fan. A first pulley is sleeved on the first drive shaft.

[0015] The second drive shaft is rotatably mounted on the accommodating frame and extends along the first horizontal direction. A drive gear is sleeved on the second drive shaft, and a second pulley is sleeved on the second drive shaft.

[0016] The transmission belt has one end fitted onto the first pulley and the other end fitted onto the second pulley;

[0017] A reciprocating lead screw is rotatably mounted on the receiving frame and extends in a vertical direction. The reciprocating lead screw is provided with a driven gear, and the driving gear meshes with the driven gear.

[0018] The brush assembly also includes a positioning frame, on which multiple brushes are detachably mounted, and the reciprocating lead screw is screwed and passes through the positioning frame.

[0019] Preferably, the brush assembly further includes a fixing plate extending along the first horizontal direction, and the plurality of brushes are fixedly connected to the fixing plate.

[0020] Preferably, the positioning frame has an installation groove, and the fixing plate has a protruding installation block that can extend into the installation groove and press against the inner wall of the installation groove.

[0021] Preferably, the brush assembly further includes a locking structure, the locking structure comprising:

[0022] A locking lever is provided on the positioning frame, which has a locking groove communicating with the mounting groove, and the locking lever is slidably disposed in the locking groove;

[0023] A locking lever, one end of which is fixedly connected to the locking paddle, and the other end of which can extend into the mounting groove and press against the mounting block;

[0024] The spring has one end fixedly connected to the inner wall of the locking groove, and the other end fixedly connected to the side of the locking lever facing away from the locking rod.

[0025] Preferably, the locking tab can extend partially out of the mounting slot.

[0026] Preferably, the mounting blocks are provided at intervals in the first horizontal direction, and the mounting slots correspond one-to-one with the mounting blocks.

[0027] Preferably, a wire clamping structure is also included, the wire clamping structure comprising:

[0028] A support plate is disposed at the top of the receiving frame, and the support plate has a receiving groove.

[0029] A bidirectional lead screw is rotatably disposed in the receiving groove;

[0030] Two clamping plates are screwed to the two ends of the bidirectional lead screw along its length, one in each direction. When the bidirectional lead screw rotates around its own axis, the two clamping plates can move closer to or further away from each other.

[0031] Preferably, the clamping structure further includes a telescopic rod that extends vertically, with the fixed end of the telescopic rod fixedly disposed at the top of the accommodating frame, and the support plate fixedly connected to the movable end of the telescopic rod.

[0032] Preferably, the heat dissipation pipes are arranged in two groups at intervals along the second horizontal direction, and each group includes a plurality of heat dissipation pipes at intervals along the first horizontal direction, wherein the second horizontal direction is perpendicular to the first horizontal direction.

[0033] The beneficial effects of this invention are:

[0034] The filtration and cleaning structures work together to clean and maintain the heat dissipation pipes. The collection box facilitates the replacement of the heat transfer medium in the heat dissipation pipes, while the filter effectively removes impurities from the heat transfer medium inside the heat dissipation pipes, ensuring heat dissipation efficiency. The brush plate assembly and the transmission assembly work together without the need for an external drive device. The transformer's built-in cooling fan drives the brush plate to reciprocate between two adjacent heat dissipation pipes, thereby removing debris stuck between the two heat dissipation pipes to achieve a cleaning effect. This ensures transformer maintenance efficiency while significantly reducing manual labor. Attached Figure Description

[0035] Figure 1 This is a first structural schematic diagram of the transformer maintenance device described in this invention;

[0036] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0037] Figure 3This is an exploded view of a portion of the transformer maintenance device described in this invention;

[0038] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle;

[0039] Figure 5 yes Figure 3 A magnified view of a section at point C;

[0040] Figure 6 yes Figure 3 A magnified view of a section at point D;

[0041] Figure 7 This is a schematic diagram of the second structure of the transformer maintenance device described in this invention.

[0042] In the picture:

[0043] 10. Cooling fan; 20. Terminal block;

[0044] 1. Containing frame;

[0045] 2. Heat sink; 21. Piping;

[0046] 3. Container tank; 31. Limiting block;

[0047] 4. Filter structure; 41. Collection box; 42. Filter screen;

[0048] 5. Cleaning structure; 51. Brush plate assembly; 511. Brush plate; 512. Positioning frame; 513. Fixing plate; 5131. Mounting block; 514. Locking structure; 5141. Locking lever; 5142. Locking rod; 5143. Spring; 52. Transmission assembly; 521. First drive shaft; 5211. First pulley; 522. Second drive shaft; 5221. Drive gear; 5222. Second pulley; 523. Transmission belt; 524. Reciprocating screw; 5241. Driven gear;

[0049] 6. Clamping structure; 61. Support plate; 62. Two-way lead screw; 63. Clamping plate; 64. Telescopic rod; 65. Locking screw. Detailed Implementation

[0050] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0051] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0054] Example 1

[0055] like Figures 1-7 As shown, this embodiment provides a transformer maintenance device for transformer maintenance. The transformer maintenance device includes a housing frame 1, a housing tank 3, a filter structure 4, a drive mechanism, a cleaning structure 5, and multiple heat dissipation pipes 2. The transformer is housed inside the housing frame 1; multiple heat dissipation pipes 2 are spaced apart along a first horizontal direction on the side wall of the housing frame 1, with adjacent heat dissipation pipes 2 interconnected; the housing tank 3 is configured to hold a heat-conducting medium, with one end connected to one heat dissipation pipe 2 and the other end connected to another heat dissipation pipe 2; the filter structure 4 includes a collection box 41 and a filter screen 42, the collection box 41 being detachably disposed between the heat dissipation pipes 2 and the housing tank 3, and the filter screen 42 being detachably disposed within the collection box 41; the drive mechanism is... The cleaning structure 5 is configured to drive the heat transfer medium to circulate between the container 3, the filter structure 4 and the multiple heat dissipation pipes 2; the cleaning structure 5 includes a brush plate assembly 51 and a transmission assembly 52. ​​The brush plate assembly 51 includes multiple brush plates 511 spaced apart along the first horizontal direction. Each brush plate 511 is located between two adjacent heat dissipation pipes 2. The transmission assembly 52 is configured to transmit the driving force generated when the transformer cooling fan 10 rotates to the brush plate 511. When the cooling fan 10 rotates, the brush plate 511 can reciprocate in the vertical direction.

[0056] The filtration structure 4 and the cleaning structure 5 work together to clean and maintain the heat dissipation pipe 2. The collection box 41 facilitates the replacement of the heat conduction medium in the heat dissipation pipe 2. At the same time, the filter screen 42 can effectively filter impurities in the heat conduction medium inside the heat dissipation pipe 2, ensuring heat dissipation efficiency. The brush plate assembly 51 and the transmission assembly 52 work together without the need for an external drive device. The cooling fan 10 built into the transformer can drive the brush plate 511 to reciprocate between two adjacent heat dissipation pipes 2, thereby removing the debris stuck between the two adjacent heat dissipation pipes 2 to achieve a cleaning effect. This ensures the efficiency of transformer maintenance while significantly reducing the amount of manual work.

[0057] It should be noted that the material of the heat-conducting medium can refer to the existing technology disclosed in this field, and is not specifically limited here; at the same time, the driving mechanism is a pump structure that can drive fluid commonly used in the prior art, and is not specifically limited here.

[0058] It is understandable that, such as Figure 2 As shown, a limiting block 31 is provided at the bottom of the input end and / or the bottom of the output end of the container 3. A limiting groove is opened in the limiting block 31. The heat dissipation pipe 2 is connected to the limiting groove filter structure 4 through the pipe 21 and is detachably installed in the limiting groove.

[0059] In this embodiment, two groups of heat dissipation pipes 2 are spaced apart along a second horizontal direction. Each group includes multiple heat dissipation pipes 2 spaced apart along a first horizontal direction. Each group of heat dissipation pipes 2 is equipped with a second drive shaft 522, a drive belt 523, and a reciprocating lead screw 524. The second horizontal direction is perpendicular to the first horizontal direction. The above arrangement can further improve the heat dissipation effect of the heat dissipation pipes 2.

[0060] Specifically, the transmission assembly 52 includes a first transmission shaft 521, a second transmission shaft 522, a transmission belt 523, and a reciprocating lead screw 524. The first drive shaft 521 extends along a first horizontal direction and is fixedly mounted relative to the rotating shaft of the cooling fan 10. A first pulley 5211 is sleeved on the first drive shaft 521. A second drive shaft 522 is rotatably mounted on the housing frame 1 and extends along a first horizontal direction. A drive gear 5221 is sleeved at one end of the second drive shaft 522, and a second pulley 5222 is sleeved at the other end. A drive belt 523 is sleeved at one end on the first pulley 5211 and at the other end on the second pulley 5222. A reciprocating screw 524 is rotatably mounted on the housing frame 1 and extends along a vertical direction. A driven gear 5241 is mounted on the reciprocating screw 524, and the drive gear 5221 meshes with the driven gear 5241. The brush assembly 51 also includes a positioning frame 512. Multiple brushes 511 are detachably mounted on the positioning frame 512, and the reciprocating screw 524 is screwed and passes through the positioning frame 512. In the above configuration, the first drive shaft 521 rotates around its own axis under the drive of the cooling fan 10, and drives the second drive shaft 522 to rotate in the same direction as the first drive shaft 521 through the drive belt 523. At the same time, the driving gear 5221 drives the driven gear 5241 so that the reciprocating screw 524 rotates around its own axis, thereby realizing the reciprocating motion of the brush plate assembly 51 in the vertical direction. It has high transmission efficiency, simple structure and low production cost.

[0061] It should be noted that the reciprocating lead screw 524 is existing technology disclosed in this field, and its principle and structure will not be described in detail here.

[0062] More specifically, the brush assembly 51 also includes a fixing plate 513 extending along a first horizontal direction, to which multiple brushes 511 are fixedly connected. The fixing plate 513 facilitates the simultaneous disassembly of multiple brushes 511, thereby improving the replacement efficiency of the brushes 511.

[0063] Specifically, the positioning frame 512 has a mounting groove, and the fixing plate 513 has a protruding mounting block 5131. The mounting block 5131 can extend into the mounting groove and press against the inner wall of the mounting groove. The mounting block 5131 improves the connection strength between the positioning frame 512 and the fixing plate 513, ensuring the stability of the brush plate 511 during reciprocating motion.

[0064] More specifically, the brush assembly 51 also includes a locking structure 514, which includes a locking paddle 5141, a locking lever 5142, and a spring 5143. The positioning frame 512 has a locking groove communicating with the mounting groove, and the locking paddle 5141 is slidably disposed in the locking groove. One end of the locking lever 5142 is fixedly connected to the locking paddle 5141, and the other end can extend into the mounting groove and press against the mounting block 5131. One end of the spring 5143 is fixedly connected to the inner wall of the locking groove, and the other end is fixedly connected to the side of the locking paddle 5141 facing away from the locking lever 5142. The locking structure 514 described above allows the locking rod 5142 to press the mounting block 5131 against the inner wall of the mounting groove under the elastic restoring force of the spring 5143, thereby further improving the connection strength between the positioning frame 512 and the fixing plate 513 and ensuring the stability of the brush plate 511 during reciprocating motion. When the brush plate 511 needs to be replaced, the locking lever 5141 can be moved in the direction where the spring 5143 is compressed, which will cause the locking rod 5142 to separate from the mounting block 5131. The operation is simple and convenient, and it is highly practical.

[0065] Preferably, in this embodiment, the locking lever 5141 can partially extend out of the mounting slot. This arrangement allows workers to quickly and easily move the locking lever 5141.

[0066] For example, in this embodiment, the locking lever 5141 is provided with an anti-slip structure, which can be an anti-slip pad, such as a rubber pad; or, the anti-slip structure can be an anti-slip protrusion, which can be a dotted protrusion or a textured protrusion of any shape, as long as it can increase the contact friction between its location and the worker's hand. The specific form is similar to the prior art, and is not specifically limited in this embodiment.

[0067] More specifically, multiple mounting blocks 5131 are spaced apart in the first horizontal direction, and mounting slots correspond one-to-one with mounting blocks 5131. This arrangement makes the force on the fixing plate 513 more even.

[0068] Example 2

[0069] like Figures 1-7 As shown, this embodiment provides a transformer maintenance device, and its components that are the same as or corresponding to those in Embodiment 1 are marked with the same or corresponding reference numerals as those in Embodiment 1. For simplicity, only the differences between this embodiment and Embodiment 1 will be described below.

[0070] Specifically, the transformer maintenance device also includes a wire clamping structure 6, which comprises a support plate 61, a bidirectional lead screw 62, and two clamping plates 63. The support plate 61 is located at the top of the receiving frame 1 and has a receiving groove. The bidirectional lead screw 62 is rotatably disposed in the receiving groove. The two clamping plates 63 are screwed one-to-one to the two ends of the bidirectional lead screw 62 along its length. When the bidirectional lead screw 62 rotates around its own axis, the two clamping plates 63 can move closer or further apart to clamp or release the cable. With the above configuration, rotating the bidirectional lead screw 62 can drive the two clamping plates 63 to move closer or further apart, thereby adapting to cables of different diameters, providing strong versatility and a wide adjustment range.

[0071] More specifically, both clamps 63 have curved surfaces on the side facing each other to increase the contact area between the clamps 63 and the cable.

[0072] Preferably, in this embodiment, both clamping plates 63 are provided with anti-slip structures on their respective sides. These anti-slip structures can be anti-slip pads, such as rubber pads; alternatively, they can be anti-slip protrusions, which can be dot-shaped protrusions or textured protrusions of any shape, as long as they increase the contact friction between the protrusion and the cable. The specific form is similar to existing technologies and is not specifically limited in this embodiment.

[0073] More specifically, one end of the bidirectional lead screw 62 extends out of the receiving groove, and a first rotating handle is fixedly provided at this end to facilitate the worker to rotate the bidirectional lead screw 62 and improve the convenience of operation.

[0074] Specifically, the cable clamping structure 6 also includes a telescopic rod 64, which extends vertically. The fixed end of the telescopic rod 64 is fixedly disposed at the top of the accommodating frame 1, and the support plate 61 is fixedly connected to the movable end of the telescopic rod 64. The aforementioned telescopic rod 64 allows for vertical adjustment of the height of the support plate 61 to accommodate different types of cables, thereby improving the versatility of the cable clamping structure 6.

[0075] It should be noted that in this embodiment, multiple terminals 20 of the transformer extend from the top of the housing frame 1, the number of clamping structures 6 is set according to the number of terminals 20, and the multiple clamping structures 6 correspond one-to-one with the multiple terminals 20.

[0076] More specifically, the clamping structure 6 also includes a locking screw 65, which passes through and is screwed to the fixed end of the telescopic rod 64. One end of the locking screw 65 can press against the movable end of the telescopic rod 64, and the other end is fixedly provided with a second rotating handle. With the above configuration, rotating the second rotating handle can lock the movable end of the telescopic rod 64 to the fixed end.

[0077] In other embodiments, the telescopic rod 64 may also be a sleeve rod structure with a self-locking function disclosed in the prior art, the principle and specific structure of which will not be described in detail here.

[0078] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A transformer maintenance device, characterized in that, include: The transformer is disposed inside the housing frame (1); Multiple heat dissipation pipes (2) are spaced apart along the first horizontal direction on the side wall of the accommodating frame (1), and two adjacent heat dissipation pipes (2) are interconnected. The container (3) is configured to contain a heat-conducting medium, one end of the container (3) is connected to one of the heat dissipation pipes (2), and the other end is connected to another heat dissipation pipe (2). The filter structure (4) includes a collection box (41) and a filter screen (42). The collection box (41) is detachably disposed between the heat dissipation pipe (2) and the container (3), and the filter screen (42) is detachably disposed in the collection box (41). The drive mechanism is configured to drive the heat-conducting medium to circulate between the container (3), the filter structure (4) and the plurality of heat dissipation pipes (2); The cleaning structure (5) includes a brush plate assembly (51) and a transmission assembly (52). The brush plate assembly (51) includes a plurality of brush plates (511) spaced apart along the first horizontal direction. Each brush plate (511) is located between two adjacent heat pipes (2). The transmission assembly (52) is configured to transmit the driving force generated when the cooling fan (10) of the transformer rotates to the brush plate (511). When the cooling fan (10) rotates, the brush plate (511) can reciprocate in the vertical direction. The wire clamping structure (6) includes: A support plate (61) is disposed at the top of the receiving frame (1), and the support plate (61) is provided with a receiving groove; A bidirectional lead screw (62) is rotatably disposed in the receiving groove; Two clamping plates (63) are screwed to the two ends of the bidirectional lead screw (62) along its length. When the bidirectional lead screw (62) rotates around its own axis, the two clamping plates (63) can move closer to or further away from each other. Telescopic rod (64) extends vertically, and the fixed end of the telescopic rod (64) is fixedly set at the top of the accommodating frame (1). The support plate (61) is fixedly connected to the movable end of the telescopic rod (64).

2. The transformer maintenance device according to claim 1, characterized in that, The transmission assembly (52) includes: The first drive shaft (521) extends along the first horizontal direction. The first drive shaft (521) is fixedly arranged relative to the rotating shaft of the cooling fan (10). A first pulley (5211) is sleeved on the first drive shaft (521). The second drive shaft (522) is rotatably mounted on the accommodating frame (1) and extends along the first horizontal direction. A drive gear (5221) is sleeved on the second drive shaft (522), and a second pulley (5222) is sleeved on the second drive shaft (522). The transmission belt (523) is fitted at one end onto the first pulley (5211) and at the other end onto the second pulley (5222); A reciprocating lead screw (524) is rotatably mounted on the receiving frame (1) and extends in the vertical direction. The reciprocating lead screw (524) is provided with a driven gear (5241), and the driving gear (5221) meshes with the driven gear (5241). The brush assembly (51) also includes a positioning frame (512), and the plurality of brushes (511) are detachably mounted on the positioning frame (512). The reciprocating lead screw (524) is screwed onto and passes through the positioning frame (512).

3. The transformer maintenance device according to claim 2, characterized in that, The brush assembly (51) further includes a fixing plate (513) extending along the first horizontal direction, and the plurality of brushes (511) are fixedly connected to the fixing plate (513).

4. The transformer maintenance device according to claim 3, characterized in that, The positioning frame (512) has an installation groove, and the fixing plate (513) has a protruding installation block (5131). The installation block (5131) can extend into the installation groove and press against the inner wall of the installation groove.

5. The transformer maintenance device according to claim 4, characterized in that, The brush assembly (51) further includes a locking structure (514), the locking structure (514) comprising: The locking lever (5141) is provided on the positioning frame (512) and has a locking groove that communicates with the mounting groove. The locking lever (5141) is slidably disposed in the locking groove. A locking lever (5142) has one end fixedly connected to the locking paddle (5141) and the other end able to extend into the mounting groove and press against the mounting block (5131). The spring (5143) is fixedly connected at one end to the inner wall of the locking groove, and at the other end to the side of the locking paddle (5141) facing away from the locking rod (5142).

6. The transformer maintenance device according to claim 5, characterized in that, The locking tab (5141) can extend partially out of the mounting slot.

7. The transformer maintenance device according to claim 5, characterized in that, The mounting blocks (5131) are provided at intervals in the first horizontal direction, and the mounting slots correspond one-to-one with the mounting blocks (5131).

8. The transformer maintenance device according to any one of claims 1-7, characterized in that, The heat dissipation pipes (2) are arranged in two groups at intervals along the second horizontal direction. Each group includes multiple heat dissipation pipes (2) arranged at intervals along the first horizontal direction. The second horizontal direction is perpendicular to the first horizontal direction.

Images