Urban landscape water circulation system based on ecological restoration

Abstract

The application relates to the field of residential river water circulation, in particular to an urban landscape water circulation system based on ecological restoration, wherein the urban landscape water circulation system based on ecological restoration comprises a river or a lake, a landscape revetment platform and a residential river; the landscape revetment platform comprises a plurality of column assemblies, each column assembly comprises a connecting pipe, one end of the plurality of connecting pipes is arranged to be connected with the river or the lake, and the other end is connected with the residential river; a first valve body assembly; at least one sampling assembly; at least one communication channel; the residential river further has at least one artificial wetland; a second valve body assembly is arranged at the communication channel; and the structure of the second valve body assembly is consistent with that of the first valve body assembly. The application can effectively utilize the structural configuration to realize the advantages of linkage with the external river or lake near the residential area and convenient sampling of the residential river water quality.

Description

Technical Field

[0001] This application relates to the field of water circulation in residential river channels, and more specifically to an urban landscape water circulation system based on ecological restoration. Background Technology

[0002] Artificial hydraulic circulation technology is an effective engineering measure for improving the quality of river and lake water bodies in recent years. It utilizes engineering measures to regulate water flow and improve hydrodynamic conditions. Specifically, under the premise of flood control safety, it involves the scientific scheduling of water conservancy projects to activate pumps (stations), revitalize urban river and lake water bodies, increase water volume, accelerate circulation, and enhance dilution and self-purification capabilities. It utilizes the hydrodynamic characteristics of rivers and lakes for water resource management and leverages their self-purification and biological purification functions to improve water quality. Artificial hydraulic circulation, based on the fundamental principles of hydrodynamics, applies power to the water body, causing it to move from static to dynamic, achieving a slow and uniform flow. The water exchange and dilution resulting from this flow make external water treatment and purification possible. The surface renewal caused by the flow provides conditions for accelerated atmospheric reoxygenation, which is beneficial for enhancing the water body's self-purification capacity, accelerating the oxidation of pollutants, and improving the living environment of aquatic organisms. In contrast, residential river channels are usually internal channels with poor water purification capabilities and often suffer from stagnant water, leading to foul odors and hindering ecological restoration. Therefore, there is a need for an urban landscape water circulation system based on ecological restoration that can be conveniently linked with external rivers or lakes near the community and sampled from rivers within the community. Summary of the Invention

[0003] The main purpose of this application is to provide an urban landscape water circulation system based on ecological restoration, wherein the urban landscape water circulation system based on ecological restoration can effectively utilize its own structural configuration to achieve the advantage of convenient water quality sampling in the river within the community.

[0004] Another objective of this application is to provide an urban landscape water circulation system based on ecological restoration, wherein the urban landscape water circulation system based on ecological restoration includes a river or lake; a landscape revetment platform; a community waterway, the landscape revetment platform including multiple column assemblies, the multiple column assemblies being arranged side by side and spaced apart, and each column assembly including a connecting pipe, the multiple connecting pipes being spaced apart, and one end of the multiple connecting pipes being configured to connect to the river or lake, and the other end being connected to the community waterway, so as to guide the natural water source of the river or lake to the community waterway; a first valve assembly, the first valve assembly being disposed on the connecting pipe; and at least one sampling assembly, the sampling assembly being... Located in the community river channel and near the end of the connecting pipe that connects to the community river channel, it is used to collect water from the area surrounding the outlet of the connecting pipe; at least one connecting channel, the community river channel also has at least one artificial wetland, one end of the connecting channel is connected to the river or lake, the other end is connected to the community river channel, and a second valve body assembly is also provided at the connecting channel. The structure of the second valve body assembly is consistent with the structure of the first valve body assembly, that is, a water circulation is formed through the natural lake or river channel, the community river channel, the artificial wetland and the natural lake or river channel to improve the water quality of the community river channel, and the water source in the community is sampled and tested by the above-mentioned sampling component to detect the water quality of the water source in the community.

[0005] Another objective of this application is to provide an urban landscape water circulation system based on ecological restoration, wherein the urban landscape water circulation system based on ecological restoration has a simple structure, is easy to operate, does not involve complex manufacturing processes and expensive materials, has high economic efficiency, and is easy to promote and use.

[0006] To achieve at least one of the above-mentioned objectives, this application provides an urban landscape water circulation system based on ecological restoration, wherein the urban landscape water circulation system based on ecological restoration includes:

[0007] Rivers or lakes;

[0008] Landscape revetment platform;

[0009] The community river channel; the landscape revetment platform includes multiple column components, which are arranged side by side and spaced apart, and each column component includes a connecting pipe. The multiple connecting pipes are spaced apart, and one end of each connecting pipe is configured to connect to the river or lake, and the other end is connected to the community river channel to guide the natural water source of the river or lake to the community river channel.

[0010] A first valve body assembly is disposed on the connecting pipe;

[0011] At least one sampling component is provided, which is located in the community waterway and near the end of the connecting pipe that connects to the community waterway, to sample water from the area surrounding the outlet of the connecting pipe.

[0012] The community waterway has at least one connecting channel and at least one artificial wetland. One end of the connecting channel is connected to the waterway or lake, and the other end is connected to the community waterway. A second valve assembly is also provided at the connecting channel. The structure of the second valve assembly is the same as that of the first valve assembly.

[0013] In one or more embodiments of this application, the landscape revetment platform includes a first baffle, a second baffle, and a third baffle, wherein the first baffle, the second baffle, and the third baffle are spaced apart, and the second baffle is located between the first baffle and the third baffle.

[0014] In one or more embodiments of this application, the landscape revetment platform includes a plurality of column assemblies, which are arranged side by side and spaced apart, and are located between the first baffle and the third baffle, and the second baffle also cooperates with the plurality of column assemblies.

[0015] In one or more embodiments of this application, each of the column components includes a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate are arranged opposite to each other and spaced apart by a predetermined distance. The first connecting plate and the second connecting plate have the same structure and together form two openings and a cavity. Both openings are connected to the cavity.

[0016] In one or more embodiments of this application, the second baffle has a plurality of evenly distributed first positioning blocks and a plurality of evenly distributed second positioning blocks on its front and rear sides, and the plurality of first positioning blocks are all located above the plurality of second positioning blocks and are spaced apart by a predetermined distance. Each first positioning block or second positioning block is composed of two vertically spaced rectangular blocks and is fixed to the second baffle.

[0017] In one or more embodiments of this application, each of the column components includes two fourth baffles and two fifth baffles. The two fifth baffles cooperate with a plurality of first positioning blocks, and the two fifth baffles cooperate with a plurality of second positioning blocks. The second baffles divide the cavity into two first cavities, which are arranged one in front of the other. The fourth baffles and the fifth baffles divide the first cavity into a first placement area, a second placement area, and a third placement area. The first placement area, the second placement area, and the third placement area are arranged vertically, and the second placement area is located between the first placement area and the third placement area.

[0018] In one or more embodiments of this application, each of the column assemblies further includes a connecting pipe, one end of which is located in a natural lake or river, and the other end of which passes through the second baffle, the second connecting plate, the first connecting plate, and the first baffle in sequence. The other end of the connecting pipe is located at the community river to guide the water source to the community river. In addition, the connecting pipe is located between the fourth baffle and the fifth baffle, wherein the second baffle has two oppositely arranged guide grooves on both its front and rear sides, and the guide grooves are configured to cooperate with the ends of the fourth baffle or the fifth baffle.

[0019] In one or more embodiments of this application, the sampling assembly includes a first connecting rod, one end of which is fixed to the top of the connecting tube, and the other end is located above the water surface. The sampling assembly also includes a housing, which is movably disposed on the first connecting rod, and the housing has a connecting portion with a first connecting hole. The first connecting rod cooperates with the first connecting hole. Notably, the first connecting rod also has an annular limiting portion, and the sampling assembly also includes a first elastic member, one end of which abuts against the annular limiting portion, and the other end of which abuts against the bottom of the connecting portion.

[0020] In one or more embodiments of this application, the sampling assembly further includes a squeezing rod sleeved on the first connecting rod. The squeezing rod has a mating part and a rotating part. The mating part and the rotating part are integrally formed, and the cross-sectional dimension of the rotating part is larger than that of the mating part. Specifically, the squeezing rod is a hollow rod, and the mating part is threadedly connected to the first connecting rod. At the same time, the end of the mating part away from the rotating part abuts against the connecting part.

[0021] In one or more embodiments of this application, the top of the housing has an opening and a second cavity, the opening communicating with the second cavity. A cover plate is also installed on the top of the housing to close the second cavity, and the cover plate has a first communicating hole communicating with the second cavity. The sampling assembly further includes a second connecting rod, one end of which is fixed to the cover plate and directly faces the first communicating hole. The second connecting rod is a hollow rod. The sampling assembly also includes a movable disk, which has a third cavity. The bottom of the third cavity has a second communicating hole penetrating the movable disk. The sampling assembly further includes a third connecting rod, one end of which is fixed within the second communicating hole, and the other end is slidably disposed within the second connecting rod. The sampling assembly also includes a second elastic member, which is sleeved on the second connecting rod, one end of which abuts against the cover plate, and the other end abuts against the bottom of the movable disk. Attached Figure Description

[0022] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 The diagram illustrates a structural schematic of an urban landscape water circulation system based on ecological restoration.

[0024] Figure 2 The diagram illustrates the structure of the landscape revetment platform.

[0025] Figure 3 The diagram illustrates the structure of the column assembly.

[0026] Figure 4 The diagram shows a partial structural schematic of the column assembly.

[0027] Figure 5 The diagram illustrates the structure of the sampling component.

[0028] Figure 6 The diagram shows... Figure 5 A magnified view of A in the middle. Detailed Implementation

[0029] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.

[0030] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0031] While ordinal numbers such as "first," "second," etc., will be used to describe various components, this does not limit which components are used. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the teachings of the inventive concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0033] refer to Figures 1 to 6 According to a preferred embodiment of the present invention, an urban landscape water circulation system based on ecological restoration includes a natural lake 100 or a river and a landscape revetment platform 200 located at the edge of the natural lake 100. The landscape revetment platform 200 is located at the natural lake 100.

[0034] It is worth mentioning that the landscape revetment platform 200 includes a first baffle 21, a second baffle 22 and a third baffle 23, the first baffle 21, the second baffle 22 and the third baffle 23 are arranged at intervals, and the second baffle 22 is located between the first baffle 21 and the third baffle 22.

[0035] It should be noted that the landscape revetment platform 200 includes multiple column assemblies 24, which are arranged side by side and spaced apart. The multiple column assemblies 24 are located between the first baffle 21 and the third baffle 23, and the second baffle 22 also cooperates with the multiple column assemblies 24.

[0036] Specifically, each of the column components 24 includes a first connecting plate 241 and a second connecting plate 242. The first connecting plate 241 and the second connecting plate 242 are arranged opposite to each other and spaced apart by a predetermined distance. The first connecting plate 241 and the second connecting plate 242 have the same structure, and the first connecting plate 241 and the second connecting plate 242 together form two openings and a cavity. Both openings are connected to the cavity. For example... Figure 3 and 4 As shown, the second baffle 22 has multiple evenly distributed first positioning blocks 243 and multiple evenly distributed second positioning blocks 244 on its front and rear sides (i.e., facing the first baffle 21 or facing the third baffle 23). The multiple first positioning blocks 243 are located above the multiple second positioning blocks 244 and are spaced apart by a predetermined distance. Each first positioning block 243 or second positioning block 244 is composed of two vertically spaced rectangular blocks, all fixed to the second baffle 22, and the connection can be achieved by screw fastening. It is worth noting that each column assembly 24 includes two fourth baffles 245 and two fifth baffles 246. The two fifth baffles 246 cooperate with the multiple first positioning blocks 243, and the two fifth baffles 246 cooperate with the multiple second positioning blocks 244, specifically as follows... Figure 4 The fourth baffle 245 is positioned between the two first positioning blocks 243 to define the end of the fourth baffle 245, and its other end abuts against the first connecting plate 241 or the second connecting plate 242. Similarly, the fifth baffle 246 is positioned between the two second positioning blocks 244, and its other end abuts against the first connecting plate 241 or the second connecting plate 242.

[0037] It should be noted that the second baffle 22 divides the cavity into two first cavities, which are arranged one after the other. The fourth baffle 245 and the fifth baffle 246 divide the first cavity into a first placement area 2001, a second placement area 2002, and a third placement area 2003. The first placement area 2001, the second placement area 2002, and the third placement area 2003 are arranged vertically, with the second placement area 2002 located between the first placement area 2001 and the third placement area 2003. Specifically, the second placement area 2002 and the third placement area 2003 are filled with stones to support the fourth baffle 245 or the fifth baffle 246, while the first placement area 2001 is filled with soil and mud. Specifically, the first baffle 21, the second baffle 22, the third baffle 23, and the multiple column components 24 together form a horizontally arranged retaining wall structure. This retaining wall structure comprises at least three sections, arranged sequentially, and the three sections are arranged in a stepped manner through height control. The middle and lower sections can be filled with mud, while the upper sections can be filled with soil. A mixture of stones and soil can be filled between the multiple column components 24 to define their positions. Vegetation can be planted at the top of the column components 24, which helps prevent soil erosion caused by rainwater runoff, reduces non-point source pollution, and enhances the cleanliness and aesthetics of the bank protection.

[0038] Specifically, each of the column components 24 further includes a connecting pipe 247, one end of which is located in the natural lake 100 or river, and the other end sequentially passes through the second baffle 22, the second connecting plate 242, the first connecting plate 241, and the first baffle 21. The ecologically restored urban landscape water circulation system includes a community river 300, and the other end of the connecting pipe 247 is located in the community river 300 to guide water to the community river 300. Furthermore, the connecting pipe 247 is located between the fourth baffle 245 and the fifth baffle 246, and is limited by stones located in the second placement area 2002.

[0039] It should be noted that the second baffle 22 has two opposing guide grooves on both its front and rear sides. These guide grooves are designed to engage with the ends of the fourth baffle 245 or the fifth baffle 246, allowing the second baffle 22 to connect with either the fourth baffle 245 or the fifth baffle 246. Furthermore, the urban landscape water circulation system based on ecological restoration includes a valve assembly mounted on the connecting pipe 247 and configured to block water flowing into the community river 300. Notably, this valve assembly is implemented as a manual shut-off valve or an electrically controlled shut-off valve.

[0040] It is worth mentioning that the urban landscape water circulation system based on ecological restoration also includes at least one sampling component 30, which is located in the community river 300 and cooperates with the end of the connecting pipe 247 that connects to the community river 300 to collect water from the surrounding area at the outlet of the connecting pipe 247.

[0041] Specifically, the sampling assembly 30 includes a first connecting rod 31, one end of which is fixed to the top of the connecting pipe 247, and the other end is located above the water surface.

[0042] Furthermore, the sampling assembly 30 also includes a housing 32, which is movably disposed on the first connecting rod 31. The housing 32 has a connecting portion with a first connecting hole. The first connecting rod 31 cooperates with the first connecting hole. Notably, the first connecting rod 31 also has an annular limiting portion. The sampling assembly 30 also includes a first elastic member 33, with one end abutting against the annular limiting portion and the other end abutting against the bottom of the connecting portion. Specifically, the first elastic member 33 can apply a force to the connecting portion to push the housing 32 upward. In addition, the sampling assembly 30 also includes a compression... The extrusion rod 34 is sleeved on the first connecting rod 31, and its connection method can be implemented as a threaded connection. Specifically, the extrusion rod 34 has a mating part and a rotating part. The mating part and the rotating part are integrally formed, and the cross-sectional dimension of the rotating part is larger than that of the mating part. Specifically, the extrusion rod 34 is a hollow rod, and the mating part is threadedly connected to the first connecting rod 31. At the same time, the end of the mating part away from the rotating part abuts against the connecting part. That is, by rotating the direction of the extrusion rod 34, the connecting part is extruded, so that the housing 32 can move towards the first elastic member 33, and conversely, it is reset by the force of the first elastic member 33.

[0043] Specifically, the top of the housing 32 has an opening and a second cavity, the opening being connected to the second cavity. A cover plate 35 is also installed on the top of the housing 32 to close the second cavity. The cover plate 35 also has a first connecting hole communicating with the second cavity. The sampling assembly 30 further includes a second connecting rod 38, one end of which is fixed to the cover plate 35 and directly faces the first connecting hole. The second connecting rod 38 is a hollow rod. The sampling assembly 30 also includes a movable disk 36, which has a third cavity. The bottom of the third cavity has a second connecting hole penetrating the movable disk 36. The sampling assembly also includes a third connecting rod 37, one end of which is fixed inside the second connecting hole, and the other end is slidably disposed within the second connecting rod 38. Specifically, as shown... Figure 6 As shown. It should also be noted that the third connecting rod 37 is also a hollow rod, and the bottom of the movable disk 36 has a gap groove. The bottom wall of the gap groove is spaced a predetermined distance from the top of the second connecting rod 38. The sampling assembly also includes a second elastic member, which is sleeved on the second connecting rod 38. One end of the second elastic member abuts against the cover plate 35, and the other end abuts against the bottom of the movable disk 36.

[0044] It is worth mentioning that the bottom of the housing 32 also has a second connection hole, which is connected to the outside and the third cavity respectively. The sampling component 30 also includes a pipe 39, which is movably connected to the second connection hole, and the other end of the pipe 39 can be connected to the external sampling cylinder to guide the water in the third cavity to the external sampling cylinder.

[0045] It should be noted that the end of the community river 300 also has an artificial wetland 400, and the urban landscape water circulation system based on ecological restoration includes at least one connecting channel. One end of the connecting channel is connected to a river or lake, and the other end is connected to the community river 300. A second valve assembly is also provided at the connecting channel. The structure of the second valve assembly is consistent with the structure of the first valve assembly. That is, water circulation is formed by the natural lake 100 or river, the community river 300, the artificial wetland 400, and the natural lake 100 or river to improve the water quality of the community river 300. It should also be noted that the community river 300 is specifically an internal river of the community ecology, and the community river 300 often becomes smelly due to stagnant water. This application provides a solution that effectively solves this problem.

[0046] In summary, the urban landscape water circulation system based on ecological restoration described in the embodiments of this application is explained, which provides advantages such as the ability to link with external rivers or lakes near the community and convenient water quality sampling of rivers within the community.

[0047] It is worth mentioning that, in this embodiment, the urban landscape water circulation system based on ecological restoration has a simple structure, does not involve complex manufacturing processes or expensive materials, and is highly economical. At the same time, for manufacturers, the urban landscape water circulation system based on ecological restoration provided in this application is easy to produce and inexpensive, which is more conducive to controlling production costs and further facilitates product promotion and use.

[0048] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from these principles.

Claims

1. A city landscape water circulation system based on ecological restoration, characterized in that, The urban landscape water circulation system based on ecological restoration includes: Rivers or lakes; Landscape revetment platform; The community river channel; the landscape revetment platform includes multiple column components, which are arranged side by side and spaced apart, and each column component includes a connecting pipe. The multiple connecting pipes are spaced apart, and one end of each connecting pipe is configured to connect to the river or lake, and the other end is connected to the community river channel to guide the natural water source of the river or lake to the community river channel. A first valve body assembly is disposed on the connecting pipe; At least one sampling assembly is provided, positioned in a community waterway near the end of the connecting pipe that connects to the community waterway, to sample water from the area surrounding the outlet of the connecting pipe. The sampling assembly includes a first connecting rod, one end of which is fixed to the top of the connecting pipe, and the other end above the water surface. The sampling assembly also includes a housing movably mounted on the first connecting rod, and the housing has a connecting portion with a first connecting hole. The first connecting rod engages with the first connecting hole. The top of the housing has an opening and a second cavity, the opening communicating with the second cavity. A cover plate is also installed on the top of the housing to close the second cavity, and the cover plate also has a first communicating hole. The sampling assembly further includes a second connecting rod, one end of which is fixed to the cover plate and faces the first connecting hole. The second connecting rod is a hollow rod. The sampling assembly also includes a movable disk, which has a third cavity. The bottom of the third cavity has a second connecting hole that penetrates the movable disk. The assembly also includes a third connecting rod, one end of which is fixed in the second connecting hole and the other end of which is slidably disposed in the second connecting rod. The assembly also includes a second elastic member, which is sleeved on the second connecting rod. One end of the second elastic member abuts against the cover plate and the other end abuts against the bottom of the movable disk. The bottom of the movable disk has a gap groove. The community waterway has at least one connecting channel and at least one artificial wetland. One end of the connecting channel is connected to the waterway or lake, and the other end is connected to the community waterway. A second valve assembly is also provided at the connecting channel. The structure of the second valve assembly is the same as that of the first valve assembly.

2. The urban landscape water circulation system based on ecological restoration according to claim 1, wherein the landscape revetment platform includes a first baffle, a second baffle and a third baffle, the first baffle, the second baffle and the third baffle are spaced apart, and the second baffle is located between the first baffle and the third baffle.

3. The urban landscape water circulation system based on ecological restoration according to claim 2, wherein the landscape revetment platform includes multiple column components, the multiple column components are arranged side by side and spaced apart, and the multiple column components are located between the first baffle and the third baffle, and the second baffle also cooperates with the multiple column components.

4. The urban landscape water circulation system based on ecological restoration according to claim 3, wherein each of the column components includes a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are arranged opposite to each other and spaced apart by a predetermined distance, and the first connecting plate and the second connecting plate have the same structure, and the first connecting plate and the second connecting plate together form two openings and a cavity, and both openings are connected to the cavity.

5. The urban landscape water circulation system based on ecological restoration according to claim 4, wherein the front and rear sides of the second baffle have a plurality of evenly distributed first positioning blocks and a plurality of evenly distributed second positioning blocks, and the plurality of first positioning blocks are all located on the upper side of the plurality of second positioning blocks and are spaced apart by a predetermined distance, and each first positioning block or second positioning block is composed of two vertically spaced rectangular blocks and is fixed on the second baffle.

6. The urban landscape water circulation system based on ecological restoration according to claim 5, wherein each of the column components includes two fourth baffles and two fifth baffles, the two fifth baffles cooperating with a plurality of first positioning blocks, the two fifth baffles cooperating with a plurality of second positioning blocks, wherein the second baffles divide the cavity into two first cavities, and the two first cavities are arranged one in front of the other, and the fourth baffles and the fifth baffles divide the first cavity into a first placement area, a second placement area and a third placement area, the first placement area, the second placement area and the third placement area being arranged vertically, wherein the second placement area is located between the first placement area and the third placement area.

7. The urban landscape water circulation system based on ecological restoration according to claim 6, wherein the connecting pipe is located between the fourth baffle and the fifth baffle, wherein the second baffle has two oppositely arranged guide grooves on both its front and rear sides, and the guide grooves are configured to cooperate with the ends of the fourth baffle or the fifth baffle.

8. The urban landscape water circulation system based on ecological restoration according to claim 7, wherein the first connecting rod further has an annular limiting part, and the sampling component further includes a first elastic member, one end of the first elastic member abutting against the annular limiting part, and the other end abutting against the bottom of the connecting part.

9. The urban landscape water circulation system based on ecological restoration according to claim 8, wherein the sampling component further includes a squeezing rod, the squeezing rod is sleeved on the first connecting rod, the squeezing rod has a mating part and a rotating part, the mating part and the rotating part are integrally formed, and the cross-sectional dimension of the rotating part is larger than the cross-sectional dimension of the mating part, the mating part is threadedly connected to the first connecting rod, and the end of the mating part away from the rotating part abuts against the connecting part.

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