Pipeline connecting device for building water supply and drainage

Abstract

The utility model relates to the technical field of pipeline connecting devices, and discloses a pipeline connecting device for building water supply and drainage, an adjusting device is arranged above a base, a pipeline connecting assembly is fixed on the adjusting device, the adjusting device comprises a lower connecting plate arranged on the base, and one end of each of two side plates of the lower connecting plate is provided with a transverse sliding groove; the connecting shaft is arranged in the sliding groove; the fixed shaft is fixedly arranged at one ends of the two side plates of the lower connecting plate; the supporting rod is arranged on the connecting shaft and the fixing shaft; the upper connecting plate is arranged on the supporting rod, a sliding groove is also formed in one end of a side plate of the upper connecting plate, a connecting shaft is arranged in the sliding groove, and a fixing shaft is also fixedly arranged at the other end of the upper connecting plate; the fixing shaft of the lower connecting plate is connected with the fixing shaft of the upper connecting plate through a supporting rod, and the connecting shaft of the lower connecting plate is connected with the fixing shaft of the upper connecting plate through a supporting rod. The problem that the connection height of existing equipment cannot be adjusted is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline connection devices, in particular to a pipeline connection device for building water supply and drainage. Background Art

[0002] The main task of water supply and drainage pipelines is to transmit water for building production, cold water for domestic use, hot water, and wastewater for treatment, etc. When connecting drainage pipes, a connecting device is needed to connect two pipes or multiple groups of pipes together to form a water supply and drainage. In the process of connecting the pipes, the two pipes need to be kept in a coaxial position to facilitate welding or flange connection. During the connection, due to the weight of the pipe itself, the interface may be offset, increasing the difficulty of connection.

[0003] The Chinese utility model patent with publication number CN217195005U discloses a pipe connection device for building water supply and drainage engineering. The positions of two pipes are fixed by arranging two sets of clamping mechanisms on the base. When the workers connect the two pipes after the positions of the pipes are fixed, the interface positions of the pipes are not easily offset, thereby improving the stability of the pipes during the connection process and reducing the difficulty of connection. At the same time, a flexible protrusion is arranged between the fixed clamping seat and the movable clamping seat. When the fixed clamping seat and the movable clamping seat press the pipe tightly, the flexible protrusion is in direct contact with the pipe, thereby avoiding damage to the pipe caused by direct contact between the fixed clamping seat and the movable clamping seat. However, the device still has some other problems. For example, the height of the support frame of the clamping structure of the device is fixed, so that the entire device cannot operate according to the height requirements of different pipes. Utility Model Content

[0004] The purpose of the utility model is to provide a pipe connection device for building water supply and drainage to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the following technical solution is provided: a pipe connection device for building water supply and drainage, comprising:

[0006] Base;

[0007] A base, arranged above the base;

[0008] An adjusting device, arranged above the base;

[0009] A pipeline connection assembly is arranged above the regulating device;

[0010] Wherein, the adjusting device further comprises:

[0011] A lower connecting plate is arranged on the base, and one end of two side plates of the lower connecting plate is provided with a transverse sliding groove;

[0012] A connecting shaft, disposed inside the sliding groove;

[0013] A fixed shaft, fixedly arranged at the other end of the two side plates of the lower connecting plate;

[0014] A support rod, disposed on the connecting shaft and the fixed shaft;

[0015] An upper connecting plate is arranged on the support rod, and a sliding groove is also provided at one end of the side plate of the upper connecting plate, a connecting shaft is arranged inside the sliding groove, and a fixed shaft is also fixedly arranged at the other end of the upper connecting plate; the fixed shaft of the lower connecting plate is connected to the fixed shaft of the upper connecting plate through the support rod, and the connecting shaft of the lower connecting plate is connected to the fixed shaft of the upper connecting plate through the support rod.

[0016] In the above technical solution, further, ground nails are fixedly provided at the four corners of the lower surface of the base, and the lower ends of the ground nails are configured as cones.

[0017] In any of the above technical solutions, further, the base is set in a "concave" shape, a guide rod and a first threaded rod are fixedly set in the middle of the base, and one end of the first threaded rod is fixedly set inside one side of the base.

[0018] In any of the above technical solutions, further, a slider is provided below the lower connecting plate, a threaded hole and a fixing hole are laterally provided in the middle of the slider, the threaded hole is cooperatively connected with the first threaded rod, and the fixing hole is cooperatively connected with the guide rod.

[0019] In any of the above technical solutions, further, the pipeline connection assembly includes:

[0020] A connection box, fixedly arranged on the upper surface of the upper connection plate;

[0021] Pipe fixing ports are provided on two side panels of the connection box;

[0022] Flanges are fixedly arranged on the left and right sides of the pipe fixing opening;

[0023] A filter plate is arranged inside the connection box. An opening is formed on the upper surface of the connection box. The depth of the opening extends to the middle of the bottom plate of the connection box. The filter plate is installed into the connection box through the opening.

[0024] A sealing plate is arranged on the top of the filter plate, and the sealing plate can seal the opening of the connection box.

[0025] In any of the above technical solutions, further, a fixed block is provided on one side of the lower connecting plate, a circular hole is opened on the fixed block, a connecting block is fixedly provided on the connecting shaft inside the sliding groove of the lower connecting plate, a circular hole is also opened on the connecting block, a second threaded rod is connected to the inside of the circular hole, and one end of the second threaded rod is inserted into the circular hole of the connecting block.

[0026] In any of the above technical solutions, further, one end of the second threaded rod away from the connecting block is fixedly connected to the output shaft of the second motor, and the second motor is fixedly arranged on the outside of the fixed block, and the other end of the first threaded rod is fixedly connected to the output shaft of the first motor, and the first motor is fixedly arranged on the outside of the base.

[0027] In any of the above technical solutions, further, support rods are provided at both ends of the fixed shaft and the connecting shaft, and the support rods on the same side are hinged by a rotating shaft, and the rotating shaft passes through the support rods on both sides.

[0028] The beneficial effects of the utility model are:

[0029] 1. Sliding grooves are provided at one end of the two side plates of the upper connecting plate and the lower connecting plate, and connecting shafts are provided inside the sliding grooves on the left and right sides. The connecting shaft can change its position laterally inside the sliding grooves. At the same time, fixed shafts are fixedly provided at the other ends of the two side plates of the upper connecting plate and the lower connecting plate. The fixed shaft of the upper connecting plate is connected to the connecting shaft of the lower connecting plate through a supporting rod. Support rods are connected to both sides of each connecting shaft and the fixed shaft. The overlapping positions of the support rods on the same side are hinged through a rotating shaft. In this way, when the connecting rod changes its position inside the sliding groove, the upper connecting plate and the lower connecting plate are hinged on the rotating shaft through the supporting rod, so that the height of the upper connecting plate can be changed, thereby changing the height of the pipeline connecting assembly, so that the device can meet the connection of pipelines of different heights.

[0030] 2. An opening is provided on the upper surface of the connection box, a filter plate is arranged inside the opening, and a sealing plate is arranged on the top of the filter plate. The filter plate can filter out impurities in the drainage entering the pipeline from the water inlet, thereby preventing the pipeline from being blocked. The sealing plate can prevent the drainage in the connection box from overflowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the utility model;

[0032] Figure 2 It is a structural schematic diagram of the utility model;

[0033] Figure 3 It is a schematic diagram of the structural section of the utility model;

[0034] Explanation of the reference numerals: 100, base; 110, ground nail; 200, pedestal; 210, guide rod; 220, first threaded rod; 230, slider; 240, first motor; 300, adjusting device; 310, lower connecting plate; 311, sliding groove; 320, connecting shaft; 330, fixed shaft; 340, supporting rod; 341, rotating shaft; 350, upper connecting plate; 360, fixed block; 370, connecting block; 380, second threaded rod; 390, second motor; 400, pipe connecting assembly; 410, connecting box; 420, pipe fixing port; 430, flange; 440, filter plate; 450, opening; 460, sealing plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0036] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] Embodiment 1:

[0038] like Figure 1-Figure 3 As shown, this embodiment provides a pipe connection device for building water supply and drainage, comprising:

[0039] Base 100;

[0040] The base 200 is disposed above the base 100;

[0041] The adjusting device 300 is disposed above the base 200;

[0042] The pipeline connection assembly 400 is disposed above the regulating device 300;

[0043] The adjusting device 300 further includes:

[0044] The lower connecting plate 310 is disposed on the base 200, and one end of the two side plates of the lower connecting plate 310 is provided with a transverse sliding groove 311;

[0045] The connecting shaft 320 is disposed inside the sliding groove 311;

[0046] The fixed shaft 330 is fixedly disposed at the other end of the two side plates of the lower connecting plate 310;

[0047] A support rod 340, disposed on the connecting shaft 320 and the fixed shaft 330;

[0048] The upper connecting plate 350 is arranged on the support rod 340, and a sliding groove 311 is also opened at one end of the side plate of the upper connecting plate 350, a connecting shaft 320 is arranged inside the sliding groove 311, and a fixed shaft 330 is also fixedly arranged at the other end of the upper connecting plate 350; the fixed shaft 330 of the lower connecting plate 310 is connected to the fixed shaft 330 of the upper connecting plate 350 through the support rod 340, and the connecting shaft 320 of the lower connecting plate 310 is connected to the fixed shaft 330 of the upper connecting plate 350 through the support rod 340.

[0049] In the present technical solution, in order to enable the device to meet the connection requirements of pipelines of different heights, an adjusting device 300 is provided. The lower connecting plate 310 of the adjusting device 300 is fixedly arranged above the base 200, and the base 200 is arranged above the base 100, so as to provide support for the entire device. One end of the two side plates of the lower connecting plate 310 is provided with a sliding groove 311, and connecting shafts 320 are arranged inside the sliding grooves 311 on both sides. The connecting shafts 320 can change their positions along the sliding grooves 311, and the other end of the lower connecting plate 310 is fixedly provided with a fixed shaft 330. Similarly, one end of the upper connecting plate 350 is also provided with a sliding groove 311, and a connecting rod is also arranged inside the sliding groove 311. The other end of the upper connecting plate 350 is fixedly provided with a fixed shaft 330. The fixed shaft 330 of the upper connecting plate 350 0 is connected to the connecting shaft 320 of the lower connecting plate 310 through a support rod 340, and the two ends of the support rod 340 are hinged to the fixed shaft 330 and the connecting shaft 320. Similarly, the connecting shaft 320 of the upper connecting plate 350 is connected to the fixed shaft 330 of the lower connecting plate 310 through a support rod 340, and the two ends of the support rod 340 are hinged to the fixed shaft 330 and the connecting shaft 320. In this way, when any one of the connecting shafts 320 of the upper connecting plate 350 or the lower connecting plate 310 changes position inside the sliding groove 311, the other set of connecting shafts 320 will also change position along the sliding groove 311, thereby changing the height of the upper connecting plate 350, so that the height of the pipe connecting assembly 400 fixedly connected to the upper connecting plate 350 will change, so that the device can meet the connection requirements of pipes of different heights.

[0050] Embodiment 2:

[0051] This embodiment provides a pipe connection device for building water supply and drainage, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0052] like Figure 1-Figure 3 As shown, in this embodiment, ground spikes 110 are fixedly arranged at the four corners of the lower surface of the base 100, and the lower ends of the ground spikes 110 are arranged in a cone shape.

[0053] In the present technical solution, in order to facilitate fixing the entire device on the ground, ground nails 110 are fixedly provided at the four corners of the lower surface of the base 100, and the ground nails 110 are provided in a cone shape, so that the ground nails 110 are conveniently fixed in the ground.

[0054] Embodiment 3:

[0055] This embodiment provides a pipe connection device for building water supply and drainage, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0056] like Figure 1-Figure 3 As shown, in this embodiment, the base 200 is set in a "concave" shape, and a guide rod 210 and a first threaded rod 220 are fixedly set in the middle of the base 200, and one end of the first threaded rod 220 is fixedly set inside one side of the base 200.

[0057] In this technical solution, in order to facilitate the fixation of the lower connecting plate, the base is set to a "concave" structure, guide rods are fixed on both sides of the base, and a first threaded rod is set in the middle position of the base, so that the lower connecting plate can be assembled inside the base.

[0058] Embodiment 4:

[0059] This embodiment provides a pipe connection device for building water supply and drainage, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0060] like Figure 1-Figure 3 As shown, in this embodiment, a slider 230 is provided below the lower connecting plate 310 , and a threaded hole and a fixing hole are laterally provided in the middle of the slider 230 . The threaded hole is connected to the first threaded rod 220 , and the fixing hole is connected to the guide rod 210 .

[0061] In the present technical solution, in order to facilitate the change of the position of the lower connecting plate 310 on the base 200, a slider 230 is mounted on the first threaded rod 220 and the guide rod 210. A threaded hole is opened in the middle of the slider 230, and fixing holes are opened on both sides of the threaded hole. The guide rod 210 passes through the fixing hole, and the first threaded rod 220 passes through the threaded hole. Therefore, the slider 230 can be stably set inside the base 200, and the lower connecting plate 310 is fixedly set on the upper surface of the slider 230. Therefore, when the first threaded rod 220 rotates, the position of the slider 230 can be changed, thereby changing the position of the lower connecting plate 310, that is, changing the position of the entire adjusting device 300 and the pipeline connection assembly 400, thereby meeting the connection of pipelines with different lengths.

[0062] Embodiment 5:

[0063] This embodiment provides a pipe connection device for building water supply and drainage, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0064] like Figure 1-Figure 3 As shown, in this embodiment, the pipeline connection assembly 400 includes:

[0065] The connection box 410 is fixedly disposed on the upper surface of the upper connection plate 350;

[0066] The pipe fixing opening 420 is provided on two side panels of the connection box 410;

[0067] Flange 430, fixedly disposed on the left and right sides of the pipeline fixing opening 420;

[0068] The filter plate 440 is disposed inside the connection box 410. The upper surface of the connection box 410 is provided with an opening 450. The depth of the opening 450 extends to the middle of the bottom plate of the connection box 410. The filter plate 440 is installed into the connection box 410 through the opening 450.

[0069] The sealing plate 460 is disposed on the top of the filter plate 440 , and the sealing plate 460 can seal the opening 450 of the connection box 410 .

[0070] In the present technical solution, in order to facilitate the connection of the pipeline and prevent the pipeline from being blocked, a connection box 410 is provided in the pipeline connection assembly 400, and pipeline fixing ports 420 are provided on the left and right sides of the connection box 410. Flanges 430 are fixedly provided on the inner and outer sides of the pipeline fixing ports 420, and the pipeline can be connected to the pipeline fixing ports 420 through the flanges 430. At the same time, an opening 450 is provided on the upper surface of the connection box 410, and the depth of the opening 450 extends to the middle position of the bottom plate of the connection box 410, so as to facilitate the installation and fixing of the filter plate 440, and a sealing plate 460 is fixedly provided on the top of the filter plate 440, and the sealing plate 460 can seal the opening 450, so as to prevent the internal drainage of the connection box 410 from overflowing from the opening 450, and the filter plate 440 can simply filter the drainage in the connection box 410, so as to prevent the inside of the pipeline from being blocked by impurities in the drainage.

[0071] Embodiment 6:

[0072] This embodiment provides a pipe connection device for building water supply and drainage, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0073] like Figure 1-Figure 3 As shown, in this embodiment, a fixing block 360 is provided on one side of the lower connecting plate 310, and a circular hole is opened on the fixing block 360. A connecting block 370 is fixedly provided on the connecting shaft 320 inside the sliding groove 311 of the lower connecting plate 310, and a circular hole is also opened on the connecting block 370. A second threaded rod 380 is connected to the inside of the circular hole, and one end of the second threaded rod 380 is inserted into the circular hole of the connecting block 370.

[0074] In the present technical solution, in order to facilitate the adjustment of the height of the pipe connecting assembly 400, a fixing block is fixedly arranged on one side of the lower connecting plate 310 close to the sliding groove 311, and a circular hole is opened in the middle of the fixing block 360. Similarly, a connecting block 370 is fixedly arranged on the connecting shaft 320 inside the sliding groove 311 of the lower connecting plate 310, and a circular hole is also opened in the middle of the connecting block 370. The circular holes on the connecting block 370 and the fixing block 360 are coaxially arranged, and a second threaded rod 380 is arranged between the two circular holes. The position of one end of the second threaded rod 380 close to the fixing block 360 remains unchanged. When the second threaded rod 380 rotates, the position of the connecting block 370 on the second threaded rod 380 can be changed, thereby changing the position of the connecting rod inside the sliding groove 311, and then changing the height of the upper connecting plate 350, and finally changing the height of the pipe connecting assembly 400.

[0075] Embodiment 7:

[0076] This embodiment provides a pipe connection device for building water supply and drainage, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0077] like Figure 1-Figure 3 As shown, in this embodiment, one end of the second threaded rod 380 away from the connecting block 370 is fixedly connected to the output shaft of the second motor 390, and the second motor 390 is fixedly arranged on the outside of the fixed block 360. The other end of the first threaded rod 220 is fixedly connected to the output shaft of the first motor 240, and the first motor 240 is fixedly arranged on the outside of the base 200.

[0078] In the present technical solution, in order to facilitate the fixing of the second threaded rod 380 and the first threaded rod 220 and to facilitate the rotation of the second threaded rod 380 and the first threaded rod 220, an output shaft of the second motor 390 is fixedly connected to one end of the second threaded rod 380 close to the fixing block 360, and the second motor 390 is fixedly arranged on the outside of the fixing block 360, so that it can be ensured that the second threaded rod 380 will not change its position when rotating inside the circular hole of the fixing block 360. Therefore, when the second threaded rod 380 is driven by the second motor 390 to rotate, only the position of the second threaded rod 380 will change. The position of the connecting block 370 can change the angle between the support rod 340 and the lower connecting plate 310, thereby changing the height of the pipe connecting assembly 400; in addition, the output shaft of the first motor 240 is fixedly connected to one end of the first threaded rod 220, and the first motor 240 is fixedly arranged on the outside of the base 200, so that the first motor 240 drives the rotation of the first threaded rod 220, so that the slider 230 can change its position along the first threaded rod 220, thereby facilitating the change of the horizontal position of the adjusting device 300 and the pipe connecting assembly 400.

[0079] Embodiment 8:

[0080] This embodiment provides a pipe connection device for building water supply and drainage, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0081] like Figure 1-Figure 3 As shown, in this embodiment, support rods 340 are provided at both ends of the fixed shaft 330 and the connecting shaft 320 , and the support rods 340 on the same side are hinged by a rotating shaft 341 , and the rotating shaft 341 passes through the support rods 340 on both sides.

[0082] The cam 340 is a vertical cam 341 which is adapted to move the upper and lower connecting plates 350 in a direction of rotation relative to each other, wherein the cam 340 is adapted to move the upper and lower connecting plates 350 in a direction of rotation relative to each other.

[0083] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A pipe connection device for building water supply and drainage, characterized in that: include: Base (100); A base (200) is arranged above the base (100); An adjusting device (300) is arranged above the base (200); A pipeline connection assembly (400) is arranged above the regulating device (300); Wherein, the regulating device (300) further comprises: A lower connecting plate (310) is disposed on the base (200), and one end of two side plates of the lower connecting plate (310) is provided with a transverse sliding groove (311); A connecting shaft (320) is disposed inside the sliding groove (311); A fixed shaft (330) is fixedly arranged at the other end of the two side plates of the lower connecting plate (310); A support rod (340) is disposed on the connecting shaft (320) and the fixed shaft (330); The upper connecting plate (350) is arranged on the supporting rod (340), and a sliding groove (311) is also provided at one end of the side plate of the upper connecting plate (350), a connecting shaft (320) is arranged inside the sliding groove (311), and a fixed shaft (330) is also fixedly arranged at the other end of the upper connecting plate (350); the fixed shaft (330) of the lower connecting plate (310) is connected to the fixed shaft (330) of the upper connecting plate (350) through the supporting rod (340), and the connecting shaft (320) of the lower connecting plate (310) is connected to the fixed shaft (330) of the upper connecting plate (350) through the supporting rod (340).

2. A pipe connection device for building water supply and drainage according to claim 1, characterized in that: Ground nails (110) are fixedly arranged at the four corners of the lower surface of the base (100), and the lower ends of the ground nails (110) are arranged in a cone shape.

3. A pipe connection device for building water supply and drainage according to claim 1, characterized in that: The base (200) is arranged in a "concave" shape, a guide rod (210) and a first threaded rod (220) are fixedly arranged in the middle of the base (200), and one end of the first threaded rod (220) is fixedly arranged inside one side of the base (200).

4. A pipe connection device for building water supply and drainage according to claim 3, characterized in that: A slider (230) is disposed below the lower connecting plate (310), and a threaded hole and a fixing hole are transversely disposed in the middle of the slider (230), the threaded hole is cooperatively connected to the first threaded rod (220), and the fixing hole is cooperatively connected to the guide rod (210).

5. A pipe connection device for building water supply and drainage according to claim 1, characterized in that: The pipeline connection assembly (400) comprises: A connection box (410) is fixedly arranged on the upper surface of the upper connection plate (350); Pipe fixing ports (420) are provided on two side panels of the connection box (410); Flanges (430) are fixedly arranged on the left and right sides of the pipeline fixing opening (420); A filter plate (440) is arranged inside the connection box (410); an opening (450) is formed on the upper surface of the connection box (410); the depth of the opening (450) extends to the middle of the bottom plate of the connection box (410); and the filter plate (440) is installed inside the connection box (410) through the opening (450); A sealing plate (460) is disposed on the top end of the filter plate (440), and the sealing plate (460) can seal the opening (450) of the connection box (410).

6. A pipe connection device for building water supply and drainage according to claim 3, characterized in that: A fixing block (360) is provided on one side of the lower connecting plate (310), and a circular hole is provided on the fixing block (360). A connecting block (370) is fixedly provided on the connecting shaft (320) inside the sliding groove (311) of the lower connecting plate (310), and a circular hole is also provided on the connecting block (370). A second threaded rod (380) is connected to the inside of the circular hole, and one end of the second threaded rod (380) is inserted into the circular hole of the connecting block (370).

7. A pipe connection device for building water supply and drainage according to claim 6, characterized in that: One end of the second threaded rod (380) away from the connecting block (370) is fixedly connected to the output shaft of the second motor (390), and the second motor (390) is fixedly arranged on the outside of the fixing block (360). The other end of the first threaded rod (220) is fixedly connected to the output shaft of the first motor (240), and the first motor (240) is fixedly arranged on the outside of the base (200).

8. A pipe connection device for building water supply and drainage according to claim 1, characterized in that: Support rods (340) are provided at both ends of the fixed shaft (330) and the connecting shaft (320), and the support rods (340) on the same side are hinged via a rotating shaft (341), and the rotating shaft (341) passes through the support rods (340) on both sides.

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