Auxiliary installation device for pipeline gate valve

Abstract

The utility model relates to an auxiliary installation device for a pipeline gate valve, which comprises a pipe holding component, a positioning component, a pipe clamping component, a pipe clamping component, a pipe clamping component and a pipe clamping component, and the pipe clamping component is connected with the positioning component and used for hanging the positioning component at the bottom of a pipeline opening; the fixed end of the first leveling assembly is connected with the positioning assembly, the movable end of the first leveling assembly can move relative to the positioning assembly, and the movable end of the first leveling assembly abuts against the pipeline opening; the fixed end of the second leveling assembly is connected with the positioning assembly, the movable end of the second leveling assembly can move relative to the positioning assembly, the movable end of the second leveling assembly abuts against the pipeline opening, and the second leveling assembly and the first leveling assembly are distributed in a spaced mode; and the positioning assembly is used for positioning the flange gate valve. The auxiliary installation device for the pipeline gate valve can achieve installation of the pipeline flange gate valve by one person, is easy and convenient to operate and high in construction efficiency, and belongs to the technical field of pipeline installation.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline installation, and particularly relates to an auxiliary installation device for a pipeline gate valve. Background Art

[0002] A gate valve is an important fluid control device, which has functions such as truncating, regulating flow rate, reducing pressure and facilitating maintenance. Its opening and closing part is a gate plate, and the moving direction of the gate plate is perpendicular to the fluid direction, so that the gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled. The gate valve is sealed by the contact between the valve seat and the gate plate.

[0003] The installation process involves multiple links and complex operations, such as the positioning, fastening of flanges, and the installation and debugging of valves. In the traditional way of installing a gate valve, the gate valve is placed on the pipeline with the flange already installed, ensuring that the flange of the gate valve is aligned with the flange on the pipeline, and bolts and nuts are used to tightly connect the flange of the gate valve with the flange on the pipeline. Usually, these operations require the cooperation of multiple people to ensure normal installation. Installing a flange gate valve is time-consuming and laborious, resulting in a waste of human resources. Summary of the Utility Model

[0004] Aiming at the technical problems existing in the prior art, the purpose of the utility model is to provide an auxiliary installation device for a pipeline gate valve, which does not require the cooperation of multiple people for installation, can be operated by a single person, saves time and effort, and saves human resources.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An auxiliary installation device for a pipeline gate valve, which is used to install a flange gate valve at the pipeline opening; it includes: a pipe holding component, the pipe holding component is connected with a positioning component, and the pipe holding component is used to hang the positioning component at the bottom of the pipeline opening; a first leveling component, the fixed end of the first leveling component is connected with the positioning component, the movable end of the first leveling component can move relative to the positioning component, and the movable end of the first leveling component abuts against the pipeline opening; a second leveling component, the fixed end of the second leveling component is connected with the positioning component, the movable end of the second leveling component can move relative to the positioning component, the movable end of the second leveling component abuts against the pipeline opening, and the second leveling component and the first leveling component are distributed at intervals; a positioning component, and the positioning component is used to position the flange gate valve.

[0007] As a preference, the pipe holding component includes a connecting plate, a first adjustment handle and a chain. The connecting plate is fixedly connected with the positioning component, the fixed end of the first adjustment handle is fixedly connected with the positioning component, and the movable end of the first adjustment handle can move relative to the positioning component; one end of the chain is connected with the movable end of the first adjustment handle, the other end of the chain is wound around the connecting plate, and the chain and the connecting plate enclose a pipe holding area, or the chain and the positioning component enclose a pipe holding area.

[0008] Preferably, the first adjustment handle includes a first connecting sleeve, a first rotating part, a first handle and a chain connecting piece, the first connecting sleeve and the connecting plate are fixedly connected, the first rotating part and the first connecting sleeve are threadedly connected, the first handle is fixedly connected to the first rotating part, the first rotating part is sleeved on the outside of the chain connecting piece, the chain connecting piece is rotatably connected to the first rotating part, and the chain connecting piece is hinged to the chain.

[0009] Preferably, the first leveling assembly includes a first fixing part, a first turntable and a first rotating shaft. The first fixing part is fixedly connected to the positioning assembly, one end of the first rotating shaft is threadedly connected to the first fixing part, one end of the first rotating shaft passes through the positioning assembly and abuts against the pipe opening, and the first turntable is fixedly connected to the other end of the first rotating shaft.

[0010] As a preference, a first buffer is rotatably connected to the abutment point between the first rotating shaft and the pipe opening.

[0011] Preferably, the second leveling assembly includes a second fixing part, a second rotating shaft and a crank, the second fixing part is fixedly connected to the positioning assembly, the second rotating shaft is threadedly connected to the second fixing part, one end of the second rotating shaft passes through the second fixing part and abuts against the pipe opening; the crank is fixedly connected to the second rotating shaft.

[0012] As a preference, a second buffer is rotatably connected to the abutment point between the second rotating shaft and the pipe opening.

[0013] As a preferred embodiment, the positioning assembly includes a positioning plate, and the positioning plate is provided with a clearance groove penetrating the positioning plate.

[0014] As a preferred embodiment, the positioning assembly also includes a positioning sleeve, and the positioning sleeve is used for positioning the flange gate valve.

[0015] As a preference, the positioning sleeve is movable relative to the positioning plate.

[0016] In general, the utility model has the following advantages:

[0017] The pipeline gate valve auxiliary installation device of the utility model can realize the installation of flange gate valve by one person, and the operation is simple and convenient, and the construction efficiency is high. When the construction personnel install the flange gate valve by one person, they first bring the pipeline gate valve auxiliary installation device to the pipeline mouth, use the pipe holding assembly to hang the entire pipeline gate valve auxiliary installation device at the pipeline mouth, and then place the flange gate valve on the positioning assembly, and adjust the position of the positioning assembly relative to the pipeline mouth by the first leveling assembly and the second leveling assembly respectively, so that the flange gate valve is aligned with the pipeline mouth, put on the sealing strip at the pipeline mouth, make the flange gate valve and the pipeline mouth docked, put the sealing strip on the docking place of the flange gate valve and the pipeline mouth, apply lubricating oil, and finally put on the clamp at the docking place of the flange gate valve and the pipeline mouth, tighten the screws of the clamp, and the installation of the flange gate valve can be completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective view of an auxiliary installation device for a pipeline gate valve.

[0019] Figure 2 It is a front view of an auxiliary installation device for a pipeline gate valve when assembling a flange gate valve.

[0020] Figure 3 It is another front view of an auxiliary installation device for a pipeline gate valve when assembling a flange gate valve.

[0021] Figure 4 It is a perspective view of the positioning component.

[0022] Figure 5 It is a perspective view of the second leveling component.

[0023] Figure 6 It is a perspective view of the first leveling component.

[0024] Figure 7 It is a perspective view of the pipe clamping component after removing the chain.

[0025] Figure 8 It is an exploded view of the pipe clamping component after removing the connecting plate.

[0026] Among them, 1 is the positioning component, 1-1 is the positioning flat plate, 1-2 is the first movable hole, 1-3 is the second movable hole, 1-4 is the positioning sleeve, 1-5 is the avoidance groove, 2 is the pipe clamping component, 2-1 is the connecting plate, 2-2 is the first handle, 2-3 is the first rotating part, 2-4 is the first connecting sleeve, 2-5 is the chain, 2-6 is the chain connecting piece, 3 is the first leveling component, 3-1 is the first turntable, 3-2 is the first rotating shaft, 3-3 is the first fixing part, 3-4 is the first buffer, 4 is the second leveling component, 4-1 is the crank, 4-2 is the second rotating shaft, 4-3 is the second fixing part, 4-4 is the second buffer, 5 is the pipe opening, and 6 is the flange gate valve. Specific embodiments

[0027] The following will further elaborate on the present utility model in conjunction with specific embodiments.

[0028] Such as Figure 1-8As shown in the figure, a flange gate valve 6 installation device provided in this embodiment is used to install the flange gate valve 6 at the pipe opening 5; the flange gate valve 6 installation device includes: a pipe clamping assembly 2, the pipe clamping assembly 2 is connected to the positioning assembly 1, and the pipe clamping assembly 2 is used to hang the positioning assembly 1 at the bottom of the pipe opening 5; Exemplarily, the pipe clamping assembly 2 can be an existing pipe clamp or other pipe clamping structures. For example, a bottom plate and a connecting rope, a chain 2-5 or a pipe clamping structure formed by connecting the two ends of a bottom plate with an arc-shaped connecting piece; Another example is two block structures, and symmetrical arc-shaped or triangular grooves are provided in the two block structures to form a pipe clamping area.

[0029] As Figure 6 shown, a first leveling assembly 3, the fixed end of the first leveling assembly 3 is connected to the positioning assembly 1, the movable end of the first leveling assembly 3 can move relative to the positioning assembly 1, and the movable end of the first leveling assembly 3 abuts against the pipe opening 5; Exemplarily, the first leveling assembly 3 can be a screw rod assembly, the fixed end of the first leveling assembly 3 is the slider of the screw rod assembly, and the movable end of the first leveling assembly 3 is the screw rod of the screw rod assembly. By fixing the slider relative to the positioning assembly 1, the screw rod threadedly connected to the slider moves on the slider. When the screw rod is rotated and moves towards the pipe opening 5, the screw rod abuts against the pipe, then the slider is stressed, driving the positioning assembly 1 to move relatively away from the pipe to adjust the position. Of course, the first leveling assembly 3 can also be an automated structure such as a one-way electric push rod, a cylinder, a hydraulic cylinder, etc. In this embodiment, the screw rod assembly is selected to reduce costs.

[0030] As Figure 5 shown, a second leveling assembly 4, the fixed end of the second leveling assembly 4 is connected to the positioning assembly 1, the movable end of the second leveling assembly 4 can move relative to the positioning assembly 1, the movable end of the second leveling assembly 4 abuts against the pipe opening 5, and the second leveling assembly 4 and the first leveling assembly 3 are spaced apart; Exemplarily, the second leveling assembly 4 can be a screw rod assembly, the fixed end of the second leveling assembly 4 is the slider of the screw rod assembly, and the movable end of the second leveling assembly 4 is the screw rod of the screw rod assembly. By fixing the slider relative to the positioning assembly 1, the screw rod threadedly connected to the slider moves on the slider. When the screw rod is rotated and moves towards the pipe opening 5, the screw rod abuts against the pipe, then the slider is stressed, driving the positioning assembly 1 to move relatively away from the pipe to adjust the position. Of course, the second leveling assembly 4 can also be an automated structure such as a one-way electric push rod, a cylinder, a hydraulic cylinder, etc. In this embodiment, the screw rod assembly is selected to reduce costs.

[0031] As Figure 4 shown, a positioning assembly 1, the positioning assembly 1 is used to position the flange gate valve 6; Exemplarily, the positioning assembly 1 can be a flat plate or an arc-shaped plate that fits the shape of the pipe and the flange gate valve 6.

[0032] Principle: When a construction worker installs the flange gate valve 6 alone, first bring the flange gate valve 6 installation device to the pipe opening 5, and use the pipe clamping component 2 (hose clamp) to suspend the positioning component 1 (flat plate) at the pipe opening 5. Since the first leveling component 3 (lead screw component) and the second leveling component 4 (lead screw component) are connected to the positioning component 1 (flat plate), it is equivalent to the entire flange gate valve 6 installation device being suspended at the pipe opening 5. Then place the flange gate valve 6 on the positioning component 1 (flat plate), and adjust the position of the positioning component 1 relative to the pipe opening 5 through the first leveling component 3 (lead screw component) and the second leveling component 4 (lead screw component) respectively. Specifically, it can be understood that the lead screws of the two lead screw components are both pushed against the pipe, so that the flat plate is parallel or inclined to the pipe (parallel if the outer diameter of the flange gate valve 6 is the same as that of the pipe, inclined if the outer diameter of the flange gate valve 6 is larger or smaller than that of the pipe), so as to align the flange gate valve 6 with the pipe opening 5. Put on the sealing strip at the pipe opening 5 to dock the flange gate valve 6 with the pipe opening 5. Put the sealing strip on the docking part of the flange gate valve 6 and the pipe opening 5, apply lubricating oil, and finally put on the hose clamp at the docking part of the flange gate valve 6 and the pipe opening 5, and tighten the screw of the hose clamp to complete the installation of the flange gate valve 6. Through the flange gate valve 6 installation device provided by this embodiment, a single person can easily complete the installation of the flange gate valve 6, which is simple and convenient. There is no need to hold or carry the flange gate valve 6 while tightening the bolts. Use the flange gate valve 6 installation device to cooperate with the pipe to support the flange gate valve 6, which reduces the burden on the construction workers. When adjusting, there is no need to move the flange gate valve 6, just rotate the lead screw to adjust the alignment of the flange gate valve 6 with the pipe opening 5.

[0033] Such as Figure 7-8As shown, in some embodiments, the pipe holding assembly 2 includes a connecting plate 2-1, a first adjustment handle, and a chain 2-5. The connecting plate 2-1 is fixedly connected to the positioning assembly 1. The fixed end of the first adjustment handle is fixedly connected to the positioning assembly 1, and the movable end of the first adjustment handle can move relative to the positioning assembly 1. One end of the chain 2-5 is connected to the movable end of the first adjustment handle, and the other end of the chain 2-5 is wound around the connecting plate 2-1. The chain 2-5 and the connecting plate 2-1 enclose a pipe holding area, or the chain 2-5 and the positioning assembly 1 enclose a pipe holding area. Exemplarily, the connecting plate 2-1 is hung below the pipe opening 5 by the chain 2-5, or the connecting plate 2-1 is hung below the positioning assembly 1 by the chain 2-5 to support the positioning assembly 1. The connecting plate 2-1 is fixedly connected to the positioning assembly 1 by screws. The first adjustment handle can be a screw rod assembly. The movable end of the first adjustment handle is a screw rod, and the fixed end of the first adjustment handle is a slider or sleeve provided with threads. The screw rod moves relative to the slider or sleeve, so that the chain 2-5 can be finely adjusted. A hanging groove for winding the chain 2-5 can be provided on the connecting plate 2-1 to facilitate the connection of the chain 2-5. During use, first place the connecting plate 2-1 below the pipe opening 5, wind the chain 2-5 above the pipe and then wind it around the connecting plate 2-1 to hang the connecting plate 2-1 below the pipe opening 5. With the pipe holding assembly 2 arranged in this way, the flange gate valve 6 installation device can be easily hung at the pipe opening 5, facilitating the subsequent installation of the flange gate valve 6.

[0034] As Figure 7-8As shown, in some embodiments, the first adjustment handle includes a first connecting sleeve 2-4, a first rotating part 2-3, a first handle 2-2, and a chain connecting piece 2-6. The first connecting sleeve 2-4 is fixedly connected to the connecting plate 2-1. The first rotating part 2-3 is threadedly connected to the first connecting sleeve 2-4. The first handle 2-2 is fixedly connected to the first rotating part 2-3. The first rotating part 2-3 is sleeved outside the chain connecting piece 2-6. The chain connecting piece 2-6 is rotatably connected to the first rotating part 2-3. The chain connecting piece 2-6 is hinged to the chain 2-5. Exemplarily, the first connecting sleeve 2-4 is of a sleeve structure with internal threads. The connecting plate 2-1 is provided with mounting holes. The first connecting sleeve 2-4 is connected and fixed to the mounting holes by interference fit. The first rotating part 2-3 is of a sleeve structure. The outer surface of the first rotating part 2-3 is provided with threads. The first rotating part 2-3 is connected to the first connecting sleeve 2-4 by threads. The first rotating part 2-3 can be moved on the first connecting sleeve 2-4 by rotating the first rotating part 2-3. The first handle 2-2 is of a sleeve structure. A disc is sleeved at the bottom of the first handle 2-2. Grooves are provided on the disc to increase the contact force, facilitating the construction worker to rotate the first handle 2-2. The first handle 2-2 is provided with a pin hole, and the first rotating part 2-3 is also provided with a pin hole. A part of the first rotating part 2-3 is inserted into the first handle 2-2, and the two are fixedly connected by a pin shaft. The top of the chain connecting piece 2-6 is a ring, the middle part is a rod, and the bottom part is a round block. The bottom of the chain connecting piece 2-6 is larger than the inner diameter of the first rotating part 2-3. The first rotating part 2-3 is sleeved on the middle part of the chain connecting piece 2-6. The top of the chain connecting piece 2-6 extends into the first rotating part 2-3 and is axially hinged to the chain 2-5. With the chain connecting piece 2-6 arranged in this way, when the construction worker rotates the first handle 2-2 to drive the first rotating part 2-3, the chain connecting piece 2-6 can also rotate, so that it can be relatively stationary with the first rotating part 2-3, thus not driving the chain 2-5 to rotate and avoiding the generation of stress.

[0035] As Figure 6As shown, in some embodiments, the first leveling assembly 3 includes a first fixing portion 3-3, a first turntable 3-1, and a first rotating shaft 3-2. The first fixing portion 3-3 is fixedly connected to the positioning assembly 1. One end of the first rotating shaft 3-2 is threadedly connected to the first fixing portion 3-3. One end of the first rotating shaft 3-2 passes through the positioning assembly 1 and abuts against the pipe opening 5. The first turntable 3-1 is fixedly connected to the other end of the first rotating shaft 3-2. Exemplarily, the first fixing portion 3-3 is of a sleeve structure. One end thereof connected to the positioning assembly 1 is provided with an ear plate, and the ear plate is provided with a connection hole for convenient fixed connection with the positioning assembly 1 by screws, and it is provided with internal threads. The first turntable 3-1 is of a top sleeve structure and a bottom disc structure. The disc is provided with grooves to increase the contact force, which is convenient for construction workers to rotate. The first rotating shaft 3-2 is provided with external threads. The first rotating shaft 3-2 is threadedly connected to the first fixing portion 3-3. The first rotating shaft 3-2 and the first turntable 3-1 can be fixedly connected by a pin shaft. The construction worker drives the first rotating shaft 3-2 to rotate by rotating the first turntable 3-1, so that the first rotating shaft 3-2 can move on the first fixing portion 3-3.

[0036] As Figure 6 shown, in some embodiments, a first buffer member 3-4 is rotatably connected to the abutting portion of the first rotating shaft 3-2 and the pipe opening 5. Exemplarily, a coaxial rotating hole can be provided at the top of the first rotating shaft 3-2. The bottom of the first buffer member is a rotating shaft, and the top is a rotating block. The rotating shaft is rotatably matched with the rotating hole, and the rotating block abuts against the bottom of the pipe opening 5. By providing the first buffer member 3-4, when the first leveling assembly 3 is adjusted, the first buffer member 3-4 can rotate as the first rotating shaft 3-2 rotates, so that the first buffer member 3-4 is stationary relative to the pipe opening 5, avoiding the bottom of the pipe opening 5 being worn by the rotation of the first rotating shaft 3-2.

[0037] As Figure 5 shown, in some embodiments, the second leveling assembly 4 includes a second fixing portion 4-3, a second rotating shaft 4-2, and a crank 4-1. The second fixing portion 4-3 is fixedly connected to the positioning assembly 1. The second rotating shaft 4-2 is threadedly connected to the second fixing portion 4-3. One end of the second rotating shaft 4-2 passes through the second fixing portion 4-3 and abuts against the pipe opening 5; the crank 4-1 is fixedly connected to the second rotating shaft 4-2. Exemplarily, the second fixing portion 4-3 is of a sleeve structure. One end thereof connected to the positioning assembly 1 is provided with an ear plate, and the ear plate is provided with a connection hole for convenient fixed connection with the positioning assembly 1 by screws, and it is provided with internal threads. The crank 4-1 can refer to the starting rocker of a tractor. Specifically, it is formed by two perpendicularly arranged rods. The second rotating shaft 4-2 is provided with external threads. The second rotating shaft 4-2 is threadedly connected to the second fixing portion 4-3. The second rotating shaft 4-2 and the rocker can be of an integrally formed structure. The construction worker drives the second rotating shaft 4-2 to rotate by rotating the rocker, so that the second rotating shaft 4-2 can move on the second fixing portion 4-3.

[0038] As Figure 5 shown, in some embodiments, a second buffer member 4-4 is rotatably connected to the abutting portion between the second rotating shaft 4-2 and the pipe orifice 5. Exemplarily, a rotating hole coaxial with the axis can be provided at the top of the second rotating shaft 4-2. The bottom of the second buffer member is a rotating shaft, and the top is a rotating block. The rotating shaft rotates in cooperation with the rotating hole, and the rotating block abuts against the bottom of the pipe orifice 5. By providing the second buffer member 4-4, when the second leveling assembly 4 is adjusted, the second buffer member 4-4 can rotate along with the rotation of the second rotating shaft 4-2, so that the second buffer member 4-4 is stationary relative to the pipe orifice 5, avoiding the wear of the bottom of the pipe orifice 5 caused by the rotation of the second rotating shaft 4-2.

[0039] As Figure 4 shown, in some embodiments, the positioning assembly 1 includes a positioning flat plate 1-1. The positioning flat plate 1-1 is provided with a clearance groove penetrating through the positioning flat plate 1-1. The positioning flat plate 1-1 is further provided with a first moving hole 1-2 for the first leveling assembly 3 to pass through and a second moving hole 1-3 for the second leveling assembly 4 to pass through. Considering that the flange gate valve 6 has a cylindrical structure, if it is placed on the positioning flat plate 1-1, the flange gate valve 6 may not be placed stably on the positioning flat plate 1-1 due to different-sized flanges. Therefore, a clearance groove is provided, so that the flange gate valve 6 can be positioned by the edge of the clearance groove 1-5, and the flange gate valve 6 will not roll on the positioning flat plate 1-1.

[0040] As Figure 4 shown, in some embodiments, the positioning assembly 1 further includes a positioning sleeve 1-4 for positioning the flange gate valve 6. Considering that after the flange gate valve 6 is placed on the positioning assembly 1, although the clearance groove 1-5 can limit the flange gate valve 6 from rolling and falling, the flange gate valve 6 can still slide on the clearance groove 1-5. Therefore, the positioning sleeve 1-4 is provided to limit the movement of the flange gate valve 6. Specifically, after the positioning flat plate 1-1 is provided with a clearance groove, the connecting rod of the positioning sleeve 1-4 can be formed between the clearance groove and the edge of the positioning flat plate 1-1.

[0041] As Figure 4 shown, in some embodiments, the positioning sleeve 1-4 can move relative to the positioning flat plate 1-1. Considering that the specifications of the flange gate valve 6 are different, the positioning sleeve 1-4 is set to be a structure that can move on the positioning flat plate 1-1, which is convenient for positioning different-sized flange gate valves 6. The positioning sleeve 1-4 can be locked by setting locking screws.

[0042] In some embodiments, since some pipelines are at high altitudes, it is necessary to assemble the flange gate valve 6 at high altitudes. Since the flange gate valve 6 is assembled at high altitudes, there is still a risk of the flange gate valve 6 falling when placed on the positioning assembly 1. Therefore, limit plates can be set in three directions of the positioning assembly 1. The limit plates are set at three edges except for the three edges where the flange gate valve 6 and the pipeline opening 5 are connected, thereby ensuring that the flange gate valve 6 will not fall on the positioning assembly 1 and avoiding the danger of falling from high altitudes.

[0043] Through the flange gate valve 6 installation device provided in this embodiment, no matter the flange gate valve 6 is installed on the ground or in the air, the installation can be completed by one construction worker, the operation is simple and convenient, time-saving and labor-saving, and the flange gate valve 6 installation device has a simple overall structure, is easy to manufacture, has low cost, and has strong versatility.

[0044] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. Pipeline gate valve auxiliary installation device, used for pipeline flange gate valve installation; characterized in that: include: The pipe holding assembly is connected with the positioning assembly, and the pipe holding assembly is used to hang the positioning assembly at the bottom of the pipe opening; A first leveling component, wherein a fixed end of the first leveling component is connected to the positioning component, a movable end of the first leveling component is movable relative to the positioning component, and the movable end of the first leveling component is in contact with the pipe opening; A second leveling component, wherein a fixed end of the second leveling component is connected to the positioning component, a movable end of the second leveling component can move relative to the positioning component, the movable end of the second leveling component abuts against the pipe opening, and the second leveling component is spaced apart from the first leveling component; Positioning assembly: Positioning assembly is used to position flange gate valve.

2. The pipeline gate valve auxiliary installation device according to claim 1, characterized in that: The pipe holding assembly includes a connecting plate, a first adjustment handle and a chain. The connecting plate is fixedly connected to the positioning assembly, the fixed end of the first adjustment handle is fixedly connected to the positioning assembly, and the movable end of the first adjustment handle can move relative to the positioning assembly; one end of the chain is connected to the movable end of the first adjustment handle, and the other end of the chain is wrapped around the connecting plate. The chain and the connecting plate form a pipe holding area, or the chain and the positioning assembly form a pipe holding area.

3. The pipeline gate valve auxiliary installation device according to claim 2 is characterized in that: The first adjustment handle includes a first connecting sleeve, a first rotating part, a first handle and a chain connecting piece. The first connecting sleeve is fixedly connected to the connecting plate, the first rotating part and the first connecting sleeve are threadedly connected, the first handle is fixedly connected to the first rotating part, the first rotating part is sleeved on the outside of the chain connecting piece, the chain connecting piece is rotatably connected to the first rotating part, and the chain connecting piece is hinged to the chain.

4. The pipeline gate valve auxiliary installation device according to claim 1, characterized in that: The first leveling assembly includes a first fixing part, a first rotating disk and a first rotating shaft. The first fixing part is fixedly connected to the positioning assembly, one end of the first rotating shaft is threadedly connected to the first fixing part, one end of the first rotating shaft passes through the positioning assembly and abuts against the pipe opening, and the first rotating disk is fixedly connected to the other end of the first rotating shaft.

5. The pipeline gate valve auxiliary installation device according to claim 4 is characterized in that: A first buffer is rotatably connected at the abutment portion between the first rotating shaft and the pipe opening.

6. The pipeline gate valve auxiliary installation device according to claim 1, characterized in that: The second leveling assembly includes a second fixing portion, a second rotating shaft and a crank, the second fixing portion is fixedly connected to the positioning assembly, the second rotating shaft is threadedly connected to the second fixing portion, one end of the second rotating shaft passes through the second fixing portion and abuts against the pipe opening; the crank is fixedly connected to the second rotating shaft.

7. The pipeline gate valve auxiliary installation device according to claim 6, characterized in that: A second buffer is rotatably connected at the abutment portion between the second rotating shaft and the pipe opening.

8. The pipeline gate valve auxiliary installation device according to claim 1, characterized in that: The positioning component comprises a positioning plate, and the positioning plate is provided with a void avoidance groove which penetrates through the positioning plate.

9. The pipeline gate valve auxiliary installation device according to claim 8, characterized in that: The positioning assembly also includes a positioning sleeve, which is used for positioning the flange gate valve.

10. The pipeline gate valve auxiliary installation device according to claim 9, characterized in that: The positioning sleeve is movable relative to the positioning plate.

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