Anti-falling high-voltage iron tower wireless communication equipment

Abstract

The invention discloses an anti-falling high-voltage iron tower wireless communication device which comprises a connecting base, two connecting grooves are formed in the surface of the connecting base, a communication device body is arranged on the surface of the connecting base, two connecting blocks are fixedly connected to the surface of the communication device body, and the two connecting blocks are arranged in the two connecting grooves in a sleeved mode respectively. An adjusting mechanism for adjusting the communication equipment body is arranged in the connecting seat, heat dissipation grooves are formed in the upper end and the lower end of one side of the surface of the communication equipment body, a plugging mechanism for the two heat dissipation grooves is arranged in the connecting seat, a mounting seat is arranged on the surface of the connecting seat, and a mounting mechanism is arranged on the surface of the mounting seat. Through the arrangement of the connecting base, the communication equipment body is conveniently fixed, the device is more stable and convenient to install, the heat dissipation grooves in the surface of the communication equipment body are ventilated after installation, and meanwhile, the angle of the communication equipment body is conveniently adjusted in the use process, so that the use effect of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage tower wireless communication equipment, and particularly to a high-voltage tower wireless communication equipment with anti-falling function. Background Art

[0002] High-voltage tower wireless communication equipment is mainly used for communication and data transmission on high-voltage power lines. These devices can be used for functions such as monitoring the power system, realizing remote control, data collection, and realizing emergency communication.

[0003] High-voltage tower wireless communication equipment is usually used to monitor the operation status of high-voltage lines in real time, detect faults in time, reduce power outage time, monitor the surrounding environment of high-voltage towers, such as meteorological conditions, geological changes, etc., through video monitoring and sensor monitoring, to ensure the safety of high-voltage power facilities. Therefore, it is usually installed at a relatively high position. Since the high-voltage tower wireless communication equipment itself has a certain weight, it is troublesome to install, and it is easy to cause unstable installation during installation. Moreover, after installation, it is not convenient to adjust its angle, thus reducing the use effect of the high-voltage tower wireless communication equipment. Therefore, the above problems need to be solved. Summary of the Invention

[0004] Based on the technical problems existing in the background art, the present invention proposes a high-voltage tower wireless communication equipment with anti-falling function.

[0005] The high-voltage tower wireless communication equipment with anti-falling function proposed by the present invention includes a connecting seat. A chute is provided on the surface of the connecting seat, and two connecting grooves are provided on the surface of the connecting seat. The two connecting grooves are respectively arranged at the upper and lower ends of the chute. A communication equipment body is arranged on the surface of the connecting seat. Two connecting blocks are fixedly connected to the surface of the communication equipment body. The two connecting blocks are respectively sleeved inside the two connecting grooves. An adjusting mechanism for adjusting the communication equipment body is arranged inside the connecting seat. Heat dissipation grooves are arranged at both the upper and lower ends on one side of the surface of the communication equipment body. A blocking mechanism for the two heat dissipation grooves is arranged inside the connecting seat. An installation seat is arranged on the surface of the connecting seat. An installation mechanism is arranged on the surface of the installation seat. Through the setting of the connecting seat, it is convenient to fix the communication equipment body and also convenient to install it on the installation seat, so that the installation of the device is more stable and convenient. At the same time, after installation, the heat dissipation grooves on the surface of the communication equipment body will be ventilated, and it is also convenient to adjust the angle of the communication equipment body during use, thereby improving the use effect of the device.

[0006] Preferably, the adjusting mechanism includes a worm. A rotating shaft is sleeved inside the connecting seat. The rotating shaft is vertically arranged. A knob is rotatably connected to the top of the connecting seat. The knob is fixedly connected to the top of the rotating shaft. The worm is rotatably connected inside the sliding groove. The worm is fixedly connected to the bottom end of the rotating shaft. A lead screw is horizontally rotatably connected inside the sliding groove. Both ends of the lead screw are respectively sleeved on the two opposite sides inside the sliding groove. A worm gear is sleeved on the surface of the lead screw. The worm gear is engaged with the worm. A slider is horizontally slidably connected inside the sliding groove. The slider is sleeved on the surface of the lead screw. The slider is engaged with the lead screw. A fixed block is fixedly connected to the surface of the communication device body. A connecting rod is hinged inside the fixed block. One end of the connecting rod is hinged to the surface of the slider. By rotating the knob and the worm, the worm gear and the lead screw will be driven to rotate. Under the connection of the connecting rod, the angle of the communication device body can be adjusted.

[0007] Furthermore, the blocking mechanism includes baffle plates. There are two baffle plates. The two baffle plates are respectively slidably connected inside the two heat dissipation grooves. Limiting grooves are vertically opened on the two opposite sides inside the two heat dissipation grooves. Limiting strips are fixedly connected to both ends of the surfaces of the two baffle plates. The four limiting strips are respectively slidably connected inside the four limiting grooves. A plurality of first heat dissipation openings are horizontally opened inside the two heat dissipation grooves. A plurality of second heat dissipation openings are horizontally opened on the surfaces of the two baffle plates. The plurality of second heat dissipation openings respectively correspond to the plurality of first heat dissipation openings. Ball heads are fixedly connected to the surfaces of the two baffle plates. Two sliding rods are horizontally slidably connected inside the connecting seat. The bottoms of the two sliding rods near one end of the mounting seat are both arc-shaped. One end of each of the two sliding rods is engaged with the surface of the mounting seat. Through grooves are vertically penetrated through the surfaces of the two sliding rods. The rotating shaft penetrates through the two through grooves. Limiting blocks are fixedly connected to the two symmetrical sides of the surfaces of the two sliding rods. The two limiting blocks are respectively slidably connected inside the connecting seat. Springs are fixedly connected to the other ends of the two sliding rods. One ends of the two springs are fixedly connected inside the connecting seat. Push rods are hinged to the surfaces of the two sliding rods. One ends of the two push rods are slidably connected to the surface of the connecting seat. Balls are fixedly connected to one ends of the two push rods. The two balls are respectively sleeved inside the two ball heads. The two balls are respectively engaged with the two ball heads, which is used to limit the up and down sliding of the two baffle plates, so as to facilitate the opening or blocking of the plurality of first heat dissipation openings, and further improve the heat dissipation effect of the device.

[0008] Preferably, the installation mechanism includes a fixing piece. On both symmetric sides of the surface of the connecting seat, there are clamping bars fixedly connected. At both ends of one side of the surface of the mounting seat, there are clamping grooves. The two clamping bars are respectively slidably connected inside the two clamping grooves. On the surface of the mounting seat, there is a fixing seat. On the surface of the fixing seat, there is an arc-shaped groove. On both sides of the surface of the fixing seat, there are two placement grooves respectively. The four placement grooves are respectively arranged on both sides of the arc-shaped groove. Inside the four placement grooves, there are fixing holes. There are two fixing pieces. The two fixing pieces are both arranged on the surface of the fixing seat. At both ends of the two fixing pieces, there are limiting pieces fixedly connected. The four limiting pieces are respectively arranged inside the four placement grooves. Inside the four limiting pieces, there are fixing screws. The four fixing screws are respectively matched with the inside of the four fixing holes. Inside the fixing seat, there are four limiting screws. The four limiting screws are all sleeved inside the fixing seat. The four limiting screws all penetrate through the inside of the mounting seat. One end of each of the four limiting screws is matched with the surface of the connecting seat, so as to make the two fixing pieces and the fixing seat cooperate with each other, so that the mounting seat can be pre-mounted during installation.

[0009] 1. When installing this device, it is necessary to first fix the mounting seat at the required position. At this time, the installation will be more convenient. After the mounting seat is installed, then install the connecting seat and the communication device body together on the surface of the mounting seat. At this time, the installation will also be relatively convenient, thereby reducing the shaking of the communication device body and at the same time preventing the risk of the communication device body falling during installation.

[0010] 2. After this device is installed, the knob can be rotated to drive the rotation of the rotating shaft and the worm. Under the connection of the worm gear, the lead screw will rotate, and then the slider will slide horizontally. Under the connection of the connecting rod, the angle of the communication device body will be adjusted, so that the adjustment of this device is more convenient after installation, thereby improving the use effect of this device.

[0011] 3. When the connecting seat is installed inside the mounting seat, the two sliding rods will be squeezed and the two sliding rods will slide horizontally. At this time, under the connection of the push rod and the sphere, the two baffles will slide, so that the multiple first heat dissipation openings on the surface of the heat dissipation groove will be opened, thereby improving the heat dissipation effect of this device during use. At the same time, when not installed, it can protect the inside of this device. At the same time, through the cooperation of the ball head and the sphere, it will not affect the angle adjustment of the communication device body. Description of the Drawings

[0012] Figure 1 It is the front view of the anti-falling high-voltage tower wireless communication device proposed by the present invention;

[0013] Figure 2 It is the schematic diagram of the installation mechanism of the anti-falling high-voltage tower wireless communication device proposed by the present invention;

[0014] Figure 3 This is the exploded view of the surface structure of the anti-falling high-voltage tower wireless communication device proposed by the present invention;

[0015] Figure 4 This is the schematic diagram of the adjustment mechanism of the anti-falling high-voltage tower wireless communication device proposed by the present invention;

[0016] Figure 5 is Figure 4 the enlarged view of part A;

[0017] Figure 6 This is the schematic diagram of the plugging mechanism of the anti-falling high-voltage tower wireless communication device proposed by the present invention;

[0018] Figure 7 This is the exploded view of the surface structure of the communication device body of the anti-falling high-voltage tower wireless communication device proposed by the present invention.

[0019] In the figure: 1. Connecting seat; 11. Card strip; 12. Connecting groove; 13. Slide groove; 2. Mounting seat; 21. Card slot; 22. Fixed seat; 23. Arc groove; 24. Placing groove; 25. Fixing hole; 26. Limit screw; 3. Fixed piece; 31. Limit piece; 32. Fixing screw; 4. Communication device body; 41. Fixed block; 42. Connecting rod; 43. Connecting block; 44. Heat dissipation groove; 45. Limit groove; 46. First heat dissipation port; 5. Knob; 51. Rotating shaft; 52. Worm; 6. Worm gear; 61. Lead screw; 62. Slide block; 7. Slide rod; 71. Through groove; 72. Limit block; 73. Spring; 74. Push rod; 75. Sphere; 8. Baffle; 81. Limit strip; 82. Ball head; 83. Second heat dissipation port. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0021] Refer to Figures 1-7, A high-voltage tower wireless communication device for preventing falls, including a connecting seat 1. A chute 13 is provided on the surface of the connecting seat 1. Two connecting grooves 12 are provided on the surface of the connecting seat 1, and the two connecting grooves 12 are respectively arranged at the upper and lower ends of the chute 13. A communication device body 4 is arranged on the surface of the connecting seat 1. Two connecting blocks 43 are fixedly connected to the surface of the communication device body 4, and the two connecting blocks 43 are respectively sleeved inside the two connecting grooves 12. An adjusting mechanism for adjusting the communication device body 4 is arranged inside the connecting seat 1. Heat dissipation grooves 44 are arranged at both the upper and lower ends on one side of the surface of the communication device body 4. A blocking mechanism for the two heat dissipation grooves 44 is arranged inside the connecting seat 1. An installation seat 2 is arranged on the surface of the connecting seat 1, and an installation mechanism is arranged on the surface of the installation seat 2. Through the setting of the connecting seat 1, it is convenient to fix the communication device body 4, and at the same time, it is also convenient to install it on the installation seat 2, so that the installation of the device is more stable and convenient. After installation, ventilation is provided for the heat dissipation grooves 44 on the surface of the communication device body 4, and at the same time, it is convenient to adjust the angle of the communication device body 4 during use, thereby improving the use effect of the device.

[0022] Refer to Figure 3 , Figure 4 and Figure 5 , In a preferred embodiment, the adjusting mechanism includes a worm 52. A rotating shaft 51 is sleeved inside the connecting seat 1. The rotating shaft 51 is arranged vertically. A knob 5 is rotatably connected to the top of the connecting seat 1, and the knob 5 is fixedly connected to the top of the rotating shaft 51. The worm 52 is rotatably connected inside the chute 13, and the worm 52 is fixedly connected to the bottom end of the rotating shaft 51. A lead screw 61 is horizontally rotatably connected inside the chute 13. Both ends of the lead screw 61 are respectively sleeved on the opposite sides inside the chute 13. A worm gear 6 is sleeved on the surface of the lead screw 61, and the worm gear 6 cooperates with the worm 52. A slider 62 is horizontally slidably connected inside the chute 13, and the slider 62 is sleeved on the surface of the lead screw 61. The slider 62 cooperates with the lead screw 61. A fixed block 41 is fixedly connected to the surface of the communication device body 4. A connecting rod 42 is hinged inside the fixed block 41, and one end of the connecting rod 42 is hinged to the surface of the slider 62. By rotating the knob 5 and the worm 52, the worm gear 6 and the lead screw 61 will be driven to rotate. Under the connection of the connecting rod 42, the angle of the communication device body 4 will be adjusted.

[0023] Refer to Figure 3 , Figure 6 and Figure 7, in a preferred embodiment, the blocking mechanism includes baffles 8. There are two baffles 8, and the two baffles 8 are respectively slidably connected inside the two heat dissipation grooves 44. Vertical limiting grooves 45 are provided on both opposite sides inside the two heat dissipation grooves 44. Limiting strips 81 are fixedly connected to both ends of the surfaces of the two baffles 8, and the four limiting strips 81 are respectively slidably connected inside the four limiting grooves 45. A plurality of first heat dissipation openings 46 are horizontally provided inside the two heat dissipation grooves 44, and a plurality of second heat dissipation openings 83 are horizontally provided on the surfaces of the two baffles 8. The plurality of second heat dissipation openings 83 respectively correspond to the plurality of first heat dissipation openings 46. Ball heads 82 are fixedly connected to the surfaces of the two baffles 8. Two sliding rods 7 are horizontally slidably connected inside the connecting seat 1. The bottoms of the two sliding rods 7 near the mounting seat 2 are both arc-shaped. One ends of the two sliding rods 7 are respectively matched with the surface of the mounting seat 2. Through grooves 71 are vertically penetrated through the surfaces of the two sliding rods 7. The rotating shaft 51 is inserted into the two through grooves 71. Limiting blocks 72 are fixedly connected to both symmetric sides of the surfaces of the two sliding rods 7, and the two limiting blocks 72 are respectively slidably connected inside the connecting seat 1. Springs 73 are fixedly connected to the other ends of the two sliding rods 7, and one ends of the two springs 73 are respectively fixedly connected to the inside of the connecting seat 1. Push rods 74 are hinged to the surfaces of the two sliding rods 7. One ends of the two push rods 74 are respectively slidably connected to the surface of the connecting seat 1. Balls 75 are fixedly connected to one ends of the two push rods 74. The two balls 75 are respectively sleeved inside the two ball heads 82. The two balls 75 are respectively matched with the two ball heads 82 to limit the up and down sliding of the two baffles 8, so as to facilitate the opening or blocking of the plurality of first heat dissipation openings 46, and further improve the heat dissipation effect of the device.

[0024] Refer to Figure 1 and Figure 2, in a preferred embodiment, the installation mechanism includes a fixing plate 3. On both symmetric sides of the surface of the connecting seat 1, clamping bars 11 are fixedly connected. At both ends of one side of the surface of the mounting seat 2, clamping grooves 21 are provided. The two clamping bars 11 are respectively slidably connected inside the two clamping grooves 21. On the surface of the mounting seat 2, a fixing seat 22 is fixedly connected. On the surface of the fixing seat 22, an arc-shaped groove 23 is provided. On both sides of the surface of the fixing seat 22, two placing grooves 24 are respectively opened. The four placing grooves 24 are respectively arranged on both sides of the arc-shaped groove 23. Inside the four placing grooves 24, fixing holes 25 are opened. There are two fixing plates 3, and the two fixing plates 3 are both arranged on the surface of the fixing seat 22. At both ends of the two fixing plates 3, limiting pieces 31 are fixedly connected. The four limiting pieces 31 are respectively arranged inside the four placing grooves 24. Inside the four limiting pieces 31, fixing screws 32 are arranged. The four fixing screws 32 are respectively matched with the inside of the four fixing holes 25. Inside the fixing seat 22, four limiting screws 26 are arranged. The four limiting screws 26 are all sleeved inside the fixing seat 22. The four limiting screws 26 all penetrate through the inside of the mounting seat 2. One end of each of the four limiting screws 26 is matched with the surface of the connecting seat 1, so as to make the two fixing plates 3 and the fixing seat 22 cooperate with each other, so that the mounting seat 2 can be pre-installed during installation.

[0025] In the present invention, during actual use, the setting of the connecting seat 1 makes it easy to fix the communication device body 4, and also makes it easy to install it on the mounting seat 2, so that the installation of the device is more stable and convenient. At the same time, it is also easy to adjust the angle of the communication device body 4 during use, thereby improving the use effect of the device. When in use, the mounting seat 2 can be installed first. When installing the mounting seat 2, the arc groove 23 on the surface of the fixing seat 22 can be set at the installation position, and then it is clamped by the fixing piece 3 set on the surface, and it is fixed by four fixing screws 32 at the same time, so that the mounting seat 2 will be installed, and then the connecting seat 1 is clamped on the surface of the mounting seat 2. At the same time, the setting of the two clamping strips 11 makes the two limiting pieces 31 clamped in the inside of the clamping groove 21, and then tightened by the four limiting screws 26, which will limit the installation of the connecting seat 1, thereby making the connecting seat 1 more stable. This method will be more convenient during installation, and will also prevent the communication device body 4 from being greatly damaged during installation. The two springs 73 are also compressed at the same time. At this time, under the connection between the push rod 74 and the ball 75, the two baffles 8 are made to slide, so that the multiple first heat dissipation ports 46 on the surface of the heat dissipation slot 44 are opened, thereby improving the heat dissipation effect of the device when in use. At the same time, when it is not installed, the inside of the device is protected. At the same time, the cooperation between the ball head 82 and the ball 75 will not affect the angle adjustment of the communication device body 4. After the installation is completed, the rotating shaft 51 and the worm 52 can be driven to rotate by rotating the knob 5 on the top of the connecting seat 1. Under the connection of the worm gear 6, the screw 61 can be rotated. At this time, the slider 62 can slide horizontally, and under the connection of the connecting rod 42, the angle of the communication device body 4 can be adjusted, thereby improving the use effect of the device and making the device more convenient to adjust after installation.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-voltage iron tower wireless communication device for preventing falling, comprising a connection seat (1), characterized in that: The surface of the connection seat (1) is provided with a slide groove (13), the surface of the connection seat (1) is provided with two connection grooves (12), the two connection grooves (12) are respectively arranged at the upper and lower ends of the slide groove (13), the surface of the connection seat (1) is provided with a communication device body (4), the surface of the communication device body (4) is fixedly connected with two connection blocks (43), the two connection blocks (43) are respectively sleeved inside the two connection grooves (12), the connection seat (1) is provided with an adjustment mechanism for adjusting the communication device body (4), the upper and lower ends of one side of the surface of the communication device body (4) are provided with heat dissipation grooves (44), the connection seat (1) is provided with a blocking mechanism for the two heat dissipation grooves (44), the surface of the connection seat (1) is provided with a mounting seat (2), and the surface of the mounting seat (2) is provided with a mounting mechanism.

2. The anti-falling high-voltage iron tower wireless communication equipment according to claim 1 is characterized in that: The adjusting mechanism comprises a worm (52), a rotating shaft (51) is sleeved inside the connecting seat (1), the rotating shaft (51) is arranged vertically, a knob (5) is rotatably connected to the top of the connecting seat (1), the knob (5) is fixedly connected to the top of the rotating shaft (51), the worm (52) is rotatably connected to the inside of the sliding groove (13), and the worm (52) is fixedly connected to the bottom end of the rotating shaft (51).

3. The anti-falling high-voltage iron tower wireless communication equipment according to claim 2 is characterized in that: The slide groove (13) is horizontally rotatably connected with a screw rod (61), and the two ends of the screw rod (61) are respectively sleeved on the opposite sides of the slide groove (13). The surface of the screw rod (61) is sleeved with a worm wheel (6), and the worm wheel (6) cooperates with the worm (52). The slide groove (13) is horizontally slidably connected with a slider (62), and the slider (62) is sleeved on the surface of the screw rod (61), and the slider (62) cooperates with the screw rod (61).

4. The anti-falling high-voltage iron tower wireless communication equipment according to claim 3 is characterized in that: A fixed block (41) is fixedly connected to the surface of the communication device body (4), a connecting rod (42) is hinged inside the fixed block (41), and one end of the connecting rod (42) is hinged to the surface of the slider (62).

5. The anti-falling high-voltage iron tower wireless communication equipment according to claim 4 is characterized in that: The blocking mechanism comprises a baffle (8), wherein two baffles (8) are provided, and the two baffles (8) are respectively slidably connected to the inside of two heat dissipation grooves (44), and limiting grooves (45) are vertically provided on opposite sides of the two heat dissipation grooves (44), and both ends of the surfaces of the two baffles (8) are fixedly connected to limiting strips (81), and the four limiting strips (81) are respectively slidably connected to the inside of four limiting grooves (45), and the inside of the two heat dissipation grooves (44) are both horizontally provided with a plurality of first heat dissipation openings (46), and the surfaces of the two baffles (8) are both horizontally provided with a plurality of second heat dissipation openings (83), and the plurality of second heat dissipation openings (83) respectively correspond to the plurality of first heat dissipation openings (46), and the surfaces of the two baffles (8) are both fixedly connected with ball heads (82).

6. The anti-falling high-voltage iron tower wireless communication equipment according to claim 5, characterized in that: Two slide bars (7) are horizontally slidably connected inside the connection seat (1). The bottoms of the two slide bars (7) are both arranged in an arc shape near one end of the mounting seat (2). One end of the two slide bars (7) is matched with the surface of the mounting seat (2). The surfaces of the two slide bars (7) are vertically penetrated with through grooves (71). The rotating shaft (51) is inserted into the two through grooves (71). The surfaces of the two slide bars (7) are symmetrically fixedly connected with limit blocks (72). The two limit blocks (72) are respectively slidably connected to the inside of the connection seat (1). The other ends of the two slide bars (7) are fixedly connected with springs (73). One end of the two springs (73) is fixedly connected to the inside of the connection seat (1).

7. The anti-falling high-voltage iron tower wireless communication equipment according to claim 6 is characterized in that: The surfaces of the two sliding rods (7) are both hinged with push rods (74), one end of the two push rods (74) is slidably connected to the surface of the connecting seat (1), one end of the two push rods (74) is fixedly connected to a ball (75), the two balls (75) are respectively sleeved inside the two ball heads (82), and the two balls (75) are respectively matched with the two ball heads (82).

8. The anti-falling high-voltage iron tower wireless communication equipment according to claim 1, characterized in that: The mounting mechanism comprises a fixing plate (3), the surface of the connecting seat (1) is symmetrically fixedly connected with a clamping strip (11) on both sides, the surface of one side of the mounting seat (2) is provided with a clamping groove (21) at both ends, the two clamping strips (11) are respectively slidably connected inside the two clamping grooves (21), the surface of the mounting seat (2) is fixedly connected with a fixing seat (22), the surface of the fixing seat (22) is provided with an arc groove (23), the surface of the fixing seat (22) is provided with two placement grooves (24) on both sides, the four placement grooves (24) are respectively provided on both sides of the arc groove (23), and the four placement grooves (24) are provided with fixing holes (25) inside.

9. The anti-falling high-voltage iron tower wireless communication device according to claim 8, characterized in that: Two fixing plates (3) are provided, and the two fixing plates (3) are both arranged on the surface of the fixing seat (22). Both ends of the two fixing plates (3) are fixedly connected to limiting plates (31). The four limiting plates (31) are respectively arranged inside the four placement grooves (24). The four limiting plates (31) are each provided with a fixing screw (32). The four fixing screws (32) are respectively matched with the inside of the four fixing holes (25).

10. The anti-falling high-voltage iron tower wireless communication equipment according to claim 9, characterized in that: Four limiting screws (26) are arranged inside the fixing seat (22), and the four limiting screws (26) are all sleeved inside the fixing seat (22). The four limiting screws (26) all pass through the inside of the mounting seat (2), and one end of the four limiting screws (26) is matched with the surface of the connecting seat (1).

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