CN221052777U - Toilet bowl - Google Patents

Abstract

The utility model discloses a closestool, which comprises a ceramic body and a sewage drain pipe; one end of the sewage drain pipe is connected with the ceramic body, and the other end of the sewage drain pipe extends out from the rear end of the ceramic body; the sewage pipes include climbing section and decline section, and the one end of climbing section is connected with ceramic body's dirt inlet, and the other end of climbing section is connected with decline section, and at least part climbing section is located ceramic body's inside, and decline section is located ceramic body's outside, and climbing section and decline section constitute siphon structure. The closestool has the advantages of small volume, low production cost, installation space saving, good siphon effect, cleaner sewage discharge and the like.

Description

Toilet bowl

Technical Field

The utility model belongs to the technical field of toilets, and particularly relates to a toilet.

Background

The wall-mounted closestool is easy to clean and sanitary because the bottom is not contacted with the ground, has small volume, saves more space and is widely popular.

As shown in fig. 1, in order to form a siphon phenomenon in the existing wall-mounted toilet and smoothly discharge dirt, the sewage drain pipe 2 of the wall-mounted toilet needs to be bent in the ceramic body 1 for a plurality of times, so that the total length and the total height of the wall-mounted toilet are increased to ensure the service performance of the toilet, and the wall-mounted toilet loses the advantage of saving space; and, because the drain needs to buckle many times, lead to the filth to be longer in the stroke of drain, make the blowdown effect variation.

Disclosure of utility model

In view of the above, the present utility model discloses a toilet to overcome or at least partially solve the above problems.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model discloses a closestool, which comprises a ceramic body and a sewage drain pipe;

One end of the sewage drain pipe is connected with the ceramic body, and the other end of the sewage drain pipe extends out from the rear end of the ceramic body;

the sewage drain comprises a climbing section and a descending section, one end of the climbing section is connected with a sewage inlet of the ceramic body, the other end of the climbing section is connected with the descending section, at least part of the climbing section is positioned inside the ceramic body, the descending section is positioned outside the ceramic body, and the climbing section and the descending section form a siphon structure.

Further, the sewage drain pipe also comprises a horizontal section;

The horizontal section is connected between the climbing section and the descending section, and at least part of the horizontal section extends out of the ceramic body.

Further, a water blocking structure is arranged on the descending section.

Further, a water blocking table is formed in the water blocking structure.

Further, the water blocking structure is composed of one or more of a reducing structure, a bending structure and a ramp structure.

Further, a mounting section for connecting the sewage pipe is formed at the lower end of the descent section.

Further, the climbing section adopts a variable diameter design.

Further, the pipe diameter of the descending section below the horizontal line of the upper end of the sewage inlet is 40-60 mm.

Further, the vertical distance between the upper end of the sewage inlet and the upper end face of the ceramic body is 200-360 mm.

Further, a vertical distance between the lower end of the descent section and the bottom of the horizontal section is not less than 110mm.

Further, the length of the ceramic body is 500 mm-620 mm.

Further, the pipe diameter of the climbing section is 40 mm-70 mm; and/or the number of the groups of groups,

The pipe diameter of the horizontal section is 40 mm-60 mm; and/or the number of the groups of groups,

The pipe diameter of the descending section is 40-60 mm.

Further, the vertical distance between the bottom of the horizontal section and the lower end of the water blocking structure is 50 mm-300 mm.

Further, the ceramic body and the sewage drain pipe adopt an integrated structure; or alternatively

The ceramic body and the sewage drain pipe adopt a split structure.

Further, when the descending section is directly connected with the climbing section, the descending section and the climbing section adopt a split structure or an integrated structure;

When the descending section is connected with the climbing section through the horizontal section, the climbing section and the horizontal section adopt an integrated structure, and the horizontal section and the descending section adopt a split structure; or alternatively

The climbing section and the horizontal section adopt a split structure, and the horizontal section and the descending section adopt an integrated structure; or alternatively

The climbing section, the horizontal section and the descending section adopt split structures.

The utility model has the advantages and beneficial effects that:

According to the closestool, the sewage drain pipe is designed into the segmented structure, and part of the sewage drain pipe extends out from the rear end of the ceramic body, so that the climbing section at least partially positioned in the ceramic body and the descending section positioned outside the ceramic body form the siphon structure, the ceramic body is smaller in size design, the production cost of the closestool is reduced, the installation space is saved, the siphon effect is better, the sewage drain stroke is short, and the sewage drain is cleaner.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a cross-sectional view of a conventional wall-mounted toilet along its length;

FIG. 2 is a perspective view showing a toilet bowl according to embodiment 1 of the present utility model;

FIG. 3 is a cross-sectional view of the toilet bowl according to embodiment 1 of the present utility model along its length;

FIG. 4 is a cross-sectional view of a toilet along its length according to other embodiments of the present utility model;

FIG. 5 is a perspective view showing a structure of a toilet bowl according to embodiment 2 of the present utility model;

FIG. 6 is a cross-sectional view of the toilet bowl according to embodiment 2 of the present utility model along its length;

Fig. 7 to 9 are sectional views of a toilet bowl according to other embodiments of the present utility model along the length thereof;

FIG. 10 is an exploded view of the toilet according to embodiment 3 of the present utility model;

FIG. 11 is a partial cross-sectional view of the toilet bowl according to embodiment 3 of the present utility model along its length;

FIGS. 12 and 13 are sectional views of the ceramic body of example 3 of the present utility model along the length direction thereof;

FIG. 14 is a view showing an assembled construction of a toilet bowl according to embodiment 3 of the present utility model;

FIG. 15 is an exploded view of the toilet according to embodiment 4 of the present utility model;

FIG. 16 is a perspective view showing the structure of a ceramic body in example 4 of the present utility model;

FIG. 17 is a perspective view of the climbing section and the horizontal section in embodiment 4 of the present utility model;

FIG. 18 is a cross-sectional view of the embodiment 4 of the present utility model taken along the length direction of the ceramic body when the climbing section and the horizontal section are assembled on the ceramic body;

fig. 19 is a sectional view of the embodiment 4 of the present utility model taken along the length direction of the ceramic body when the climbing section and the horizontal section are separated from the ceramic body.

In the figure: 1. a ceramic body; 11. a sewage inlet; 12. a first screw hole; 13. a positioning groove; 14. a ceramic water inlet; 15. ceramic waterways; 16. washing ring water inlet hole; 17. washing the water outlet hole of the ring; 18. an injection hole; 2. a sewage drain pipe; 21. climbing sections; 211. a second screw hole; 212. positioning the bulge; 22. a horizontal section; 23. a descent section; 231. a water blocking structure; 232. installing the segments; 3. a toilet support; 4. a water tank; 5. sealing the liquid level; 6. and a seal.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The following describes in detail the technical solutions provided by the embodiments of the present utility model with reference to the accompanying drawings.

Example 1

In this embodiment a toilet is disclosed, as shown in fig. 2 and 3, comprising a ceramic body 1 and a sewage drain 2.

Specifically, one end of the sewage drain 2 is connected with the ceramic body 1, and the other end of the sewage drain 2 extends out from the rear end of the ceramic body 1 and can be connected with a sewage pipe, so that sewage in the ceramic body 1 is discharged into the sewage pipe through the sewage drain 2. The rear end of the ceramic body refers to one end of the ceramic body, which is fixedly connected with the wall body.

The sewage drain pipe 2 comprises a climbing section 21 and a descending section 23 which are fixedly connected; the climbing section 21 is a gradually ascending pipe section, the descending section 23 is a pipe section arranged along the up-down direction, and the descending section 23 of the embodiment adopts an up-down straight section structure. The climbing section 21 is located the inside of ceramic body 1 entirely, and with ceramic body 1 advance dirty mouthful 11 fixed connection, the decline section 23 is located the outside of ceramic body 1 entirely, and climbing section 21 and decline section 23 constitute siphon structure, and siphon structure is simpler, under the prerequisite of guaranteeing the siphon effect, and sewage is shorter in the stroke of this siphon structure, and it is more smooth and easy to flow. Of course, in other embodiments, as shown in fig. 4, a part of the climbing section 21 is located inside the ceramic body 1, and a part of the climbing section 21 is located outside the ceramic body 1, which is also within the scope of the present utility model.

Because the toilet bowl needs to be connected with the wall, when the toilet bowl is assembled on the wall, at least all the descending sections 23 are buried in the wall and are communicated with the sewage pipe in the wall, and a siphon structure is formed by the climbing sections 21 and the descending sections 23, namely a sewage discharging plastic pipe buried in the wall when the existing wall-mounted toilet bowl is assembled on the wall forms a part of the siphon structure (siphon pipeline) of the toilet bowl in the embodiment; wherein, the blowdown plastic tubing of current wall-hanging closestool is used for connecting siphon pipeline and sewer pipe. Therefore, only a part of the siphon structure (the climbing section 21) needs to be contained in the ceramic body 1, and the other part of the siphon structure (the descending section 23) is buried in the wall, so that the volume of the ceramic body 1 can be designed to be smaller, the length a of the ceramic body can be controlled to be 500-620 mm, the height of the ceramic body can be reduced to 310mm at the minimum, 25% of installation space can be saved, and the production cost of the ceramic body 1 can be reduced by 20%; and, ceramic body 1 is after installing on the wall body, and ceramic body 1's up end is 400mm apart from ground, and ceramic body 1's lower terminal surface is greater than 80mm apart from ground, and then makes things convenient for the sanitary of closestool bottom to clean. In addition, the design of the siphon structure of this embodiment is including locating the siphon pipeline of ceramic body and burying the blowdown plastic tubing in the wall body for the blowdown stroke of current wall-mounted closestool, makes the blowdown stroke distance of ceramic body's inlet to sewer pipe shorter, compares the blowdown stroke of current wall-mounted closestool for 1100mm, and the closestool blowdown stroke of this embodiment is 650mm, and blowdown stroke shortens 40%, and the blowdown effect is better.

In summary, in the closestool of this embodiment, through designing the drain into sectional structure, and part drain stretches out by the rear end of ceramic body, makes at least part lie in the inside climbing section of ceramic body and lie in the outside decline section of ceramic body form siphon structure, and then can make ceramic body's volume design littleer, reduced closestool's manufacturing cost, the installation is more saved space to siphon effect is better, and blowdown stroke is short, and the blowdown is cleaner.

In this embodiment, as shown in fig. 3, the sewage drain 2 further comprises a horizontal section 22; wherein, the horizontal segment is the pipeline segment that sets up along the horizontal direction.

Specifically, the horizontal segment 22 is connected between the climbing segment 21 and the descending segment 23, and part of the horizontal segment 22 extends out of the ceramic body 1, namely, part of the horizontal segment 22 extends out of the ceramic body 1, part of the horizontal segment 22 is positioned in the ceramic body 1, and forms a siphon structure through the climbing segment 21, the horizontal segment 22 and the descending segment 23, and the siphon structure is similar to a shape like a Chinese character 'ji', so that the whole structure is simpler, and the horizontal distance between the climbing segment 21 and the descending segment 23 can be controlled by selecting the length of the horizontal segment 22, so that the descending segment 23 can be fully buried in a wall when the toilet is fixed on the wall. Of course, all horizontal segments may also extend from within the ceramic body.

In addition, as shown in fig. 3, the ceramic body 1 and the sewage drain 2 are integrally constructed, and the climbing section 21, the horizontal section 22 and the descending section 23 in the sewage drain 2 are integrally constructed. This makes the structure of the toilet simpler.

The vertical distance d between the upper end of the sewage inlet 11 and the upper end surface of the ceramic body 1 is 200-360 mm, the vertical distance between the lower end of the descending section 23 and the bottom of the horizontal section 22 is not less than 110mm, and the pipe diameter of the descending section 23 below the horizontal line where the upper end of the sewage inlet 11 is positioned is 40-60 mm; through the above dimension design, as shown in fig. 12, when the vertical distance f between the bottom of the pan surface of the ceramic body 1 and the upper end surface of the ceramic body 1 is 285 mm-330 mm, the vertical distance g between the water seal liquid level 5 formed by the ceramic body 1 and the upper end surface of the ceramic body 1 is 170 mm-215 mm, so that the depth of the water seal liquid level 5 is deeper, and the water seal effect is better; simultaneously, the siphon effect formed by the sewage drain pipe 2 is better, when flushing, the negative pressure formed in the sewage drain pipe 2 is improved by 85% compared with the prior art, the negative pressure value can reach more than 1500pa, and the flushing effect is improved by more than 1 time.

In the embodiment, the pipe diameter of the climbing section 21 is 40-70 mm, and the pipe diameters of the horizontal section 22 and the descending section 23 are 40-60 mm, so that not only can the sewage discharge requirement be met, but also the siphon effect can be further improved. Of course, the size of the sewage drain pipe can also be selected from other schemes that the pipe diameter of the climbing section is 40-70 mm, the pipe diameter of the horizontal section is 40-60 mm, and/or the pipe diameter of the descending section is 40-60 mm.

In addition, the vertical distance c between the upper end of the sewage inlet 11 and the bottom of the horizontal section 22 is 50 mm-65 mm, so that the siphon effect can be effectively increased; in addition, the length b of the sewage drain pipe 2 extending out of the ceramic body 1 is 100-260 mm, and the vertical distance between the center of the wall hanging hole of the ceramic body 1 and the center of the sewage inlet 11 is 55-100 mm, so that the ceramic body 1 is convenient to install on a wall, and the installation stability of the ceramic body 1 is improved.

Further, the climbing section 21 adopts a variable diameter design, for example, the pipe diameter of the climbing section 21 is sequentially reduced from the sewage inlet 11 to the horizontal section 22 (the descending section 23), or the pipe diameter of the inlet of the climbing section 21 is large, the pipe diameter of the outlet is small, the pipe diameter of the middle pipe section of the climbing section 21 is unchanged, and the like; this can increase the siphon effect of the drain 2. Wherein the inclination of the climbing section 21 is 40-55 °, preferably the inclination of the climbing section 21 is 48 °. The horizontal section and the descending section in this embodiment may have a uniform pipe diameter structure or a variable diameter structure, which is limited herein.

Example 2

The present embodiment is different from embodiment 1 in that a water blocking structure 231 is provided on the descent section 23 as shown in fig. 5 and 6.

Like this, when sewage in sewage pipe 2 removes to the structure 231 that blocks water, the flow of sewage is hindered for sewage flow velocity slows down, is convenient for form the siphon phenomenon, compares in current wall-hanging closestool siphon production time 2.5 seconds, and the siphon production time of closestool in this embodiment is less than 1.5 seconds, and the siphon produces more rapidly, can effectively promote the blowdown effect. Further, a water blocking stage is formed in the water blocking structure 231, that is, a water blocking stage is formed in the descent section 23, by which the flow of sewage is blocked.

The water blocking structure 231 in the embodiment is a bending structure, and the bending structure is an arc structure bending towards the rear of the ceramic body 1, so that the sewage in the water blocking structure 231 flows more smoothly; of course, the bending structure can also be an arc structure bending towards the front, the left side or the right side of the ceramic body; or the bending structure is a right-angle structure bending towards the rear of the ceramic body, and the protection scope of the utility model is also provided.

In other embodiments, as shown in fig. 7 to 9, the water blocking structure 231 may be a ramp structure, a bevel bend structure, or a reducing structure, or may be formed of two or three of a reducing structure, a bend structure, and a ramp structure.

In this embodiment, the water blocking structure 231 is disposed at the upper end of the descent section 23 and is connected to the horizontal section 22. Of course, the water blocking structure may also be disposed in the middle of the descent segment or at other locations.

And, the vertical distance e between the bottom of the horizontal section 22 and the lower end of the water blocking structure 231 is 50 mm-300 mm, so that the siphon effect in the sewage drain pipe 2 is better.

In addition, the lower end of the descending section 23 is formed with a mounting section 232, and the mounting section 232 has a linear structure for connecting with a sewage pipe, thereby facilitating the installation. Wherein the outer diameter of the mounting section may correspond to the outer diameter of the sewer pipe.

Example 3

The difference between this embodiment and embodiment 2 is that, as shown in fig. 10 to 12, the climbing section 21 and the ceramic body 1 adopt an integral structure, the climbing section 21 and the horizontal section 22 adopt a split structure, which is convenient for the production, storage, transportation and installation of the ceramic body 1, and the horizontal section 22 and the descending section 23 can adopt a common sewage draining plastic pipe, thereby being capable of saving the production cost of the toilet bowl.

In addition, the one end that climbing section 21 and horizontal segment 22 are connected extends has the straight section of installation, and the straight section of installation is located ceramic body 1, and can cup joint with horizontal segment 22, is convenient for climbing section 21 and horizontal segment 22 assemble. And, be equipped with sealing member 6 between climbing section 21 and the horizontal segment 22 for realize the sealed between climbing section 21 and the horizontal segment 22, prevent the condition of leaking and take place, sealing member 6 can be sealing rubber. Of course, the climbing section and the horizontal section are not limited to be connected in a sleeved mode, and can be connected in an adhesive or bolt connection mode.

Further, the horizontal section 22 and the descending section 23 adopt a split structure, so that convenience in toilet production, storage and transportation can be further improved.

Of course, the horizontal section and the descending section can also adopt an integrated structure; or the climbing section and the horizontal section adopt an integrated structure, and the horizontal section and the descending section adopt a split structure, which is also within the protection scope of the utility model.

When the toilet bowl in this embodiment is assembled on a wall, as shown in fig. 14, the ceramic body 1 is fixed on the toilet bowl support 3, the support of the ceramic body 1 is realized by the toilet bowl support 3, the toilet bowl support 3 is buried in the wall, the ceramic water inlet 14 of the ceramic body 1 is communicated with the water tank 4 on the toilet bowl support 3, and the sewage drain pipe 2 passes through the lower part of the toilet bowl support 3 and is communicated with the sewage pipe.

The flushing path of the closestool is as follows: as shown in fig. 13, water in the water tank 4 enters the ceramic water channel 15 in the ceramic body 1 through the ceramic water inlet 14, part of water flow in the ceramic water channel 15 flows out through the washing ring water inlet 16 and the washing ring water outlet 17 in sequence, so that the washing ring of the toilet is realized, part of water flow in the ceramic water channel 15 is sprayed out through the spray hole 18, the main flushing of the toilet is realized, and generated sewage is discharged from the sewage inlet 11.

Example 4

The difference between this embodiment and embodiments 1 and 2 is that, as shown in fig. 15 to 19, the climbing section 21 and the ceramic body 1 adopt a split structure, so that the structure of the ceramic body 1 is simpler and the production thereof is facilitated; in addition, the climbing section 21, the horizontal section 22 and the descending section 23 can adopt common sewage discharging plastic pipes, so that the production cost of the closestool can be saved. Wherein, adopt one or more fixed connection among bonding, joint and the bolted connection between climbing section and the ceramic body.

In this embodiment, the end face of the dirt inlet 11 is provided with the first screw hole 12, and the end face of the climbing section 21 close to the dirt inlet 11 is provided with the second screw hole 211, so that the climbing section 21 and the ceramic body 1 can be fixedly connected through bolts, and the connection is firmer. And be equipped with sealing member 6 between climbing section 21 and the ceramic body 1 for realize the sealed between climbing section 21 and the ceramic body 1, prevent the condition emergence of leaking, sealing member 6 can be sealing rubber.

In addition, be equipped with location arch 212 on the terminal surface that climbing section 21 is close to into dirty mouthful 11, be equipped with on the terminal surface that advances dirty mouthful 11 department with location arch 212 complex positioning groove 13, when climbing section 21 and ceramic body 1 assembly, in the accessible location arch 212 inserts the constant head tank, realizes the equipment location of climbing section 21 and ceramic body 1, makes the equipment precision higher. The specific positions and the number of the positioning protrusions and the positioning grooves can be set according to the needs, and the positions of the positioning protrusions and the positioning grooves can be interchanged.

Further, the climbing section 21 and the horizontal section 22 are of an integral structure, and the horizontal section 22 and the descending section 23 are of a split structure. Of course, the climbing section and the horizontal section adopt a split structure, and the horizontal section and the descending section adopt an integrated structure; or the climbing section, the horizontal section and the descending section adopt an integrated structure; or the climbing section, the horizontal section and the descending section adopt split structures, and the split structures are all within the protection scope of the utility model.

Example 5

When the descending section is directly connected with the climbing section, namely, the sewage pipeline only comprises the descending section and the climbing section, when the sewage pipeline does not comprise the horizontal section, the descending section and the climbing section adopt a split structure, the descending section can adopt a common sewage plastic pipe, and then the production cost of a closestool can be saved, and meanwhile, the production, the storage, the transportation and the installation of the closestool are also convenient.

Of course, the descending section and the climbing section can also adopt an integrated structure, so that the structure of the closestool is simpler.

The foregoing is merely a specific embodiment of the utility model and other modifications and variations can be made by those skilled in the art in light of the above teachings. It is to be understood by persons skilled in the art that the foregoing detailed description is provided for the purpose of illustrating the utility model more fully, and that the scope of the utility model is defined by the appended claims.

Claims (15)

1. The closestool is characterized by comprising a ceramic body (1) and a sewage drain pipe (2);

One end of the sewage drain pipe (2) is connected with the ceramic body (1), and the other end of the sewage drain pipe (2) extends out from the rear end of the ceramic body (1);

The sewage drain (2) comprises a climbing section (21) and a descending section (23), one end of the climbing section (21) is connected with a sewage inlet (11) of the ceramic body (1), the other end of the climbing section (21) is connected with the descending section (23), at least part of the climbing section (21) is located inside the ceramic body (1), the descending section (23) is located outside the ceramic body (1), and the climbing section (21) and the descending section (23) form a siphon structure.

2. The toilet according to claim 1, characterized in that the sewage conduit (2) further comprises a horizontal section (22);

The horizontal section (22) is connected between the climbing section (21) and the descending section (23), and at least part of the horizontal section (22) extends out of the ceramic body (1).

3. A toilet according to claim 2, wherein the drop section (23) is provided with a water blocking structure (231).

4. A toilet according to claim 3, wherein the water blocking structure (231) has a water blocking station formed therein.

5. A toilet according to claim 3, wherein the water blocking structure (231) is constituted by one or more of a reducing structure, a bending structure and a ramp structure.

6. A toilet according to claim 1, characterized in that the lower end of the drop leg (23) is formed with a mounting section (232), the mounting section (232) being adapted to be connected to a sewer pipe.

7. A toilet according to claim 1, characterized in that the climbing section (21) is of variable diameter design.

8. The toilet according to any one of claims 1 to 7, wherein the pipe diameter of the drop section (23) below the horizontal line at the upper end of the sewage inlet (11) is 40mm to 60mm.

9. A toilet according to any one of claims 1 to 7, wherein the vertical distance between the upper end of the sewage inlet (11) and the upper end face of the ceramic body (1) is 200mm to 360mm.

10. A toilet according to any one of claims 2-5, characterized in that the vertical distance between the lower end of the drop section (23) and the bottom of the horizontal section (22) is not less than 110mm.

11. A toilet according to any one of claims 1 to 7, wherein the ceramic body (1) has a length of 500mm to 620mm.

12. A toilet according to any one of claims 2 to 5, wherein the pipe diameter of the climbing section (21) is 40mm to 70mm; and/or the number of the groups of groups,

The pipe diameter of the horizontal section (22) is 40 mm-60 mm; and/or the number of the groups of groups,

The pipe diameter of the descending section (23) is 40-60 mm.

13. A toilet according to any one of claims 3 to 5, wherein the vertical distance between the bottom of the horizontal section (22) and the lower end of the water blocking structure (231) is 50mm to 300mm.

14. A toilet according to any one of claims 2 to 5, wherein the ceramic body (1) and the sewage drain (2) are of unitary construction; or alternatively

The ceramic body (1) and the sewage drain pipe (2) adopt split structures.

15. A toilet according to claim 14, characterized in that the descending section (23) and the climbing section (21) are of a split or integral construction when the descending section (23) is directly connected to the climbing section (21);

when the descending section (23) is connected with the climbing section (21) through the horizontal section (22), the climbing section (21) and the horizontal section (22) adopt an integrated structure, and the horizontal section (22) and the descending section (23) adopt a split structure; or alternatively

The climbing section (21) and the horizontal section (22) adopt a split structure, and the horizontal section (22) and the descending section (23) adopt an integrated structure; or alternatively

The climbing section (21), the horizontal section (22) and the descending section (23) adopt split structures.