A retractable temporary support bracket and its rapid installation method

Abstract

The present invention relates to the technical field of shaft support brackets, specifically, to a retractable temporary support bracket and a quick installation method thereof, comprising a support bracket body, the support bracket body being installed at the opening of the shaft neck body, the support bracket body comprising a guard structure and a support structure, a telescopic adjustment component being provided inside the support structure, and the two guard structures being connected via a measuring structure. The present invention achieves segmented covering protection through a telescopic adjustment component, which can evenly disperse the stress on the shaft neck and reduce maintenance costs; the stretching ruler in the measuring structure can measure the spacing in real time, accurately control the telescopic position of the shaft neck support sleeve, and improve the installation adaptability and stability; the stretching ruler and the inner rod form a semi-closed top enclosure, and the clockwork spring keeps it tensioned. After locking, the gap change can be reduced, effectively ensuring the wellhead protection effect and ensuring that the support bracket operates reliably under various working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of shaft support brackets, in particular to a retractable temporary support bracket and a rapid installation method thereof. Background Art

[0002] A vertical shaft is a vertical or nearly vertical shaft, usually dug from the ground downwards, passing through different strata. It is usually circular in shape and consists of a wellhead, a well body and a well bottom. Small vertical shafts are generally 1-3 meters in diameter or cross-section and are shallow in depth. They are often used as auxiliary passages in small mines and underground pipeline inspection wells.

[0003] During the shaft construction process, temporary support of the wellhead is a key link to ensure the safety and smooth progress of the construction. Its main functions include supporting the wellhead and blocking protection;

[0004] In terms of support, traditional temporary wellhead support structures are mostly fixed in size and difficult to adapt to shaft heads of different diameters or shapes. This problem of poor adaptability of existing support structures is particularly prominent in the construction of small shafts. Small shafts have small diameters and shallow depths, and conventional support structures cannot meet their space limitations and construction requirements. When the wellhead size changes or special geological conditions are encountered, the support structure needs to be remade or modified, which not only consumes a lot of time and labor costs, but also causes construction delays.

[0005] At present, in order to reduce the large debris from falling from the wellhead, the existing technology usually uses thin plates to cover the wellhead. Multiple thin plates form a vertical net at the wellhead to block large debris without affecting the light in the well. During the construction of the vertical shaft, rock drilling, mechanical excavation and other operations will generate vibrations. These vibrations can easily cause the covering net at the wellhead to shift, causing the vertical plates to deviate.

[0006] In view of this, there is an urgent need for a retractable temporary support bracket and a quick installation method thereof to solve the above problems. Summary of the Invention

[0007] The present invention provides a retractable temporary support bracket and a rapid installation method thereof. By improving the support bracket, the support bracket is equipped with functions such as rapid installation and adjustment, and precise measurement and positioning. In a complex and changeable engineering construction environment, the support bracket can be used for safe and efficient support operations of the well neck body, ensuring the smooth progress of the construction process and the long-term stability of the wellhead, thereby solving the problems raised in the above-mentioned background technology, namely:

[0008] Traditional temporary wellhead support structures have fixed dimensions that make them difficult to adapt to shafts of different diameters or shapes. This is especially true in small shaft construction, where adaptability is poor and modifications are required in special circumstances, leading to construction delays. Furthermore, the existing thin plate covering nets used to prevent debris from falling from the wellhead are prone to displacement due to vibration during shaft construction.

[0009] To achieve the above objectives, one of the objectives of the present invention is to provide a retractable temporary support bracket, comprising a support bracket body, the support bracket body being installed at the opening of the well neck body, the support bracket body comprising a guard structure and a support structure, and a retractable adjustment component being provided inside the support structure;

[0010] The telescopic adjustment assembly includes an inner rod, and two telescopic sleeve rods are symmetrically sleeved on the surface of the inner rod. The guard structure is provided with two, and the guard structure includes a well neck support sleeve. The two well neck support sleeves are connected to the adjacent telescopic sleeve rods through an extension piece. The telescopic sleeve rods telescopically slide on the surface of the inner rod to drive the well neck support sleeve to adapt to the wellhead of the well neck body;

[0011] The two guard structures are connected by a measuring structure. During the telescopic adjustment of the two guard structures, the measuring structure can assist the guard structures in adaptive adjustment in combination with the inner diameter of the well neck body, and the measuring structure can block the opening of the well neck body in combination with the supporting structure.

[0012] In the above technical solution, by designing the support bracket body as a retractable structure including a protective body structure, a support structure and a telescopic adjustment component, the well neck support sleeve can be adaptively adjusted to the wellheads of well neck bodies of different sizes, effectively solving the problem of poor adaptability of traditional fixed-size support structures; at the same time, the measuring structure is used to assist in controlling the adjustment distance during the adjustment process, and the wellhead is blocked and protected in combination with the support structure. Compared with the traditional thin plate covering that is easy to shift, the stability and reliability of the protection are greatly improved, which not only reduces manpower and time costs, but also improves construction efficiency and ensures the safety of shaft construction.

[0013] On this basis, the extension piece and the top buckle ring are connected in a snap-fit connection, and the extension piece and the top buckle ring adopt an elastic connection method of the snap-fit and the slot. During installation, the snap-fit automatically snaps into the slot to ensure a firm connection, meeting the stability requirements of the telescopic adjustment of the support bracket; when disassembling or adjusting, the external force can deform the snap-fit and separate it, which is convenient to operate, effectively improves installation and maintenance efficiency, and reduces labor intensity.

[0014] As a further improvement to this technical solution, the top side ends of the two top buckle rings are each provided with a snap-fit connection groove, each of which is provided with an elastic member. A telescopic snap is mounted on the other end of each elastic member, and the ends of each telescopic snap, distal from the elastic member, are tilted. This ensures that the telescopic snap is compressed and contracted during installation of the well neck support sleeve without hindering its sliding. Once in position, it automatically pops out and engages the outer wall of the well neck body, forming a mechanical limit and effectively enhancing the installation stability of the well neck support sleeve.

[0015] A second object of the present invention is to provide a rapid installation method for operating the retractable temporary support bracket described above, comprising the following steps:

[0016] S1. First, lift the support frame as a whole and move it above the well neck, aligning the support structure with the top of the middle end of the well neck. Then, lower the support frame and fix the two side uprights on the ground on the side of the well neck to complete the initial positioning of the frame.

[0017] S2. Next, the plug-in fixture and the plug-in positioning groove are separated to release the fixed restriction on the telescopic sleeve, allowing it to slide freely on the surface of the inner rod. The telescopic sleeve is pushed, and the two inner diameter panels connected to it move toward the inner wall of the well neck body until they are tightly fitted. During this process, the stretching ruler connecting the two guard structures will be stretched synchronously with the movement of the inner diameter panels.

[0018] S3. The horizontal rods installed on the top of the two top buckles cooperate with each other to form a measuring cavity. By observing the changes in the measuring cavity and combining it with the scale value of the stretch ruler, the inner diameter of the well neck body can be measured. At the same time, the measurement data can be used as a reference to assist in judging and indicating whether the extension and retraction distance of the well neck support sleeve is appropriate to ensure its compatibility with the well neck body;

[0019] S4. After the well neck support sleeve is adjusted and installed, the winding shaft in the measuring box is fixed to keep the stretch ruler in a taut and fixed state. At this time, the fixed stretch ruler and the two inner rods together form a protective structure to assist in blocking the opening of the well neck body.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In this retractable temporary support bracket and its rapid installation method, the telescopic function is achieved through a telescopic adjustment component, and the opening of the well neck body can be covered and protected according to the wellhead size. The segmented coverage method is adopted, and the segmented coverage protection reduces the coverage of the entire area of the well neck body, so that the well neck can be more evenly distributed when subjected to external forces, which helps to maintain the stability of the well neck body structure. Moreover, if a certain section is damaged, only the segmented structure needs to be replaced, without disassembling the entire covering structure, thereby reducing maintenance workload and costs.

[0022] At the same time, a measuring structure is set between the two well neck support sleeves. The stretching ruler in the measuring structure is connected to the top buckle rings of the two well neck support sleeves. When adjusting the telescopic spacing of the well neck support sleeves, the stretching ruler can measure the distance between the two well neck support sleeves in real time. Combined with the original inner diameter of the well neck body, the telescopic position of the well neck support sleeve can be accurately controlled to ensure that the support bracket fits tightly with the well neck body, improve the adaptability and stability of the support bracket installation, and ensure the protection effect;

[0023] In addition, the stretching ruler of the measuring structure and the two inner rods together form a top enclosure. The inner rod is fixedly installed inside the fixed rod of the support structure to provide a stable support frame. The stretching ruler is installed on the winding shaft inside the measuring box. The winding shaft surface is equipped with a clockwork spring. During the expansion of the stretching ruler, the clockwork spring deforms to generate elastic potential energy, so that the stretching ruler always remains in a tensioned state. When the installation and adjustment of the support bracket are completed, the two ends of the stretching ruler are respectively fixed on the two top buckles, and the stretching ruler is set to a locked state to form a taut protection. From the top perspective, the two parallel inner rods and the stretching ruler in a tensioned and locked state together form a semi-closed enclosure outline, which effectively reduces the gap changes in the enclosure structure and continuously ensures the protection effect of the well neck opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a top view of the installation of the support bracket body of the present invention;

[0026] Figure 3 This is a side view of the mounting of the support bracket body of the present invention;

[0027] Figure 4 It is a schematic cross-sectional view of the guard structure when the support bracket body of the present invention is installed;

[0028] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at A;

[0029] Figure 6 This is a structural schematic diagram of the installation process of the support bracket body of the present invention;

[0030] Figure 7 It is a schematic diagram of the overall decomposition structure of the present invention;

[0031] Figure 8 This is a schematic structural diagram of the telescopic adjustment component of the present invention;

[0032] Figure 9 Schematic diagram of the protective structure of the present invention.

[0033] The meaning of each number in the figure is:

[0034] 1. Support bracket body; 11. Guard structure; 12. Support structure; 13. Telescopic adjustment assembly; 10. Well neck body;

[0035] 111, well neck support sleeve; 1101, inner diameter enclosure plate; 1102, top buckle ring; 112, extension piece;

[0036] 121, side pole; 122, platform; 123, fixed pole;

[0037] 131, inner cavity; 132, inner rod; 133, telescopic sleeve; 134, plug-in fixing piece; 135, plug-in positioning groove;

[0038] 2. Measuring structure; 21. Measuring box; 22. Stretching ruler; 23. Horizontal rod; 24. Measuring cavity;

[0039] 3. Top enclosure;

[0040] 4. Buckle connection groove; 41. Elastic member; 42. Telescopic buckle;

[0041] 5. Insert the sharp corner blocks. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] Example 1: Please refer to Figure 1-Figure 3 As shown, the purpose of this embodiment is to provide a retractable temporary support bracket, including a support bracket body 1, which is installed at the opening of the well neck body 10. The support bracket body 1 includes a protective structure 11 and a supporting structure 12. The supporting structure 12 is provided with a telescopic adjustment component 13 inside.

[0044] The telescopic adjustment assembly 13 includes an inner rod 132, and two telescopic sleeve rods 133 are symmetrically sleeved on the surface of the inner rod 132. The guard structure 11 is provided with two, and the guard structure 11 includes a well neck support sleeve 111. The two well neck support sleeves 111 are connected to the adjacent telescopic sleeve rods 133 through an extension piece 112. The telescopic sleeve rods 133 telescopically slide on the surface of the inner rod 132 to drive the well neck support sleeves 111 to adapt to the wellhead of the well neck body 10;

[0045] The two protective structures 11 are connected by a measuring structure 2. During the telescopic adjustment of the two protective structures 11, the measuring structure 2 can assist the protective structure 11 in adapting and adjusting according to the inner diameter size of the well neck body 10. In addition, the measuring structure 2 can block the opening of the well neck body 10 in combination with the supporting structure 12.

[0046] Before starting the support work, the support bracket needs to be fixed, and the fixing function of the support bracket body 1 is realized by the support structure 12. Figure 3As shown, the specific structure of the support structure 12 is disclosed. The support structure 12 includes two side uprights 121. The tops of the two side uprights 121 are fixedly installed with a stand 122. The sides of the two stands 122 away from the side uprights 121 are branched structures, and the branch ends of the two stands 122 are fixedly installed with fixed rods 123.

[0047] At the same time, referring to 7, it can be seen that the support structure 12 is composed of two side uprights 121, a platform 122 and a fixed rod 123, wherein the two side uprights 121 are vertically arranged and can be directly fastened to the ground on the side of the well neck body 10 by bolts, embedded parts, etc., to form a stable bottom support point, ensuring that the entire support bracket will not be displaced or overturned during use. The platform 122 on the top of the side upright 121 is fixedly installed by welding or high-strength bolt connection, and the side away from the side upright 121 is designed as a branch structure. This structure can effectively disperse the pressure transmitted from above, while expanding the connection range and enhancing the bearing capacity and stability of the platform 122. The fixed rod 123 fixedly installed at the branch end of the platform 122 provides a stable installation foundation for the subsequent installation of the telescopic adjustment component 13.

[0048] Secondly, the specific structure of the telescopic adjustment component 13 is disclosed. The telescopic adjustment component 13 also includes an inner cavity 131 opened inside the four fixed rods 123. Two inner rods 132 are provided. The side ends of the inner rods 132 are fixedly installed inside the inner cavity 131, so that the two inner rods 132 are parallel. The surfaces of the two inner rods 132 are provided with multiple plug-in positioning grooves 135, and the surfaces of the four telescopic sleeve rods 133 are installed with plug-in fixing parts 134.

[0049] Combine Figure 7 As shown, the four fixing rods 123 are each provided with an inner cavity 131, and the side ends of the two inner rods 132 are respectively fixedly installed in the inner cavity 131 of the corresponding fixing rod 123, so that the two inner rods 132 remain parallel, and a plurality of plug-in positioning grooves 135 are evenly distributed on the surfaces of the two inner rods 132 for positioning, and the four telescopic sleeves 133 are respectively sleeved on the surface of the inner rod 132, and the plug-in fixing parts 134 installed on the surface can be inserted into the plug-in positioning groove 135 of the inner rod 132. When adjustment is required, the plug-in fixing part 134 is pulled out from the plug-in positioning groove 135, and the telescopic sleeve 133 can slide on the surface of the inner rod 132. After adjusting to the appropriate position, the plug-in fixing part 134 is inserted into the corresponding plug-in positioning groove 135 for fixing, thereby realizing the adjustment of the position of the protective structure 11 to adapt it to the size of the well neck body 10.

[0050] The well neck support sleeve 111 includes an inner diameter panel 1101 and a top buckle ring 1102. The top buckle ring 1102 is fixedly installed on the top of the inner diameter panel 1101. Two extension pieces 112 are installed on the top of the two top buckle rings 1102. The other ends of the four extension pieces 112 are respectively connected to four telescopic sleeve rods 133.

[0051] Combine Figure 7 and Figure 8 As shown, the well neck support sleeve 111 is composed of an inner diameter enclosure plate 1101 and a top buckle ring 1102. The two inner diameter enclosure plates 1101 are both semicircular structures. The top buckle ring 1102 is fixedly installed on the top of the inner diameter enclosure plate 1101 by welding. Two extension pieces 112 are installed on the top of the top buckle ring 1102 of the two well neck support sleeves 111. One end of the extension piece 112 is fixedly connected to the top buckle ring 1102, and the other end is connected to four telescopic sleeve rods 133 respectively. This connection method enables the well neck support sleeve 111 to form a linkage relationship with the telescopic adjustment assembly 13. When the telescopic sleeve rod 133 is telescopically and slidably adjusted on the surface of the inner rod 132, the well neck support sleeve 111 is driven to move by the extension piece 112, so that the two semicircular inner diameter enclosure plates 1101 fit the inner wall of the well neck body 10, presenting a non-fully surrounded protection.

[0052] In terms of engineering construction, non-fully enclosed protection makes it easy for construction workers to quickly install and disassemble the support bracket body 1, especially when the space around the wellhead is limited or the construction environment is complex. The inner diameter enclosure 1101 of the semicircular structure can be installed in steps and areas, without the need for large-scale lifting equipment to assist in the overall installation, reducing construction difficulty and cost. From the stress perspective, non-fully enclosed protection allows the well neck body 10 to have a certain deformation space when under stress. When the well neck body 10 produces uneven settlement or slight deformation due to surrounding engineering construction, geological changes and other factors, the inner diameter enclosure 1101 of the semicircular structure will not form a fully enclosed constraint on the well neck body 10, reducing excessive additional stress caused by deformation obstruction. At the same time, non-fully enclosed protection makes the stress distribution more dispersed. Compared with fully enclosed protection, it reduces stress concentration, reduces the risk of cracks and damage to the well neck body 10, and ensures the stability and safety of the well neck body 10 during construction and subsequent use.

[0053] Finally, the specific structure of the measuring structure 2 is disclosed. The measuring structure 2 includes a measuring box 21 installed on the side end of one of the top buckle rings 1102. A winding shaft is installed inside the measuring box 21, and a spring is installed on the surface of the winding shaft. The other end of the spring is connected to a stretching ruler 22. The end of the stretching ruler 22 away from the spring is fixedly installed on the top of the other top buckle ring 1102. Horizontal rods 23 are fixedly installed on the top of the two top buckle rings 1102. The two horizontal rods 23 directly form a measuring cavity 24.

[0054] The area of the two inner rods 132 close to the well neck body 10 and the stretching ruler 22 together form a top enclosure 3.

[0055] Combine Figure 5 , the measuring box 21 is installed at the side end of one of the top buckle rings 1102, and the winding shaft is installed inside the measuring box 21. A spring is wound on its surface. One end of the spring is fixed on the winding shaft, and the other end is connected to the stretching ruler 22. This connection method allows the stretching ruler 22 to automatically retract into the measuring box 21 under the elastic restoring force of the spring when it is not pulled by external force. When the distance between the two well neck support sleeves 111 changes, the stretching ruler 22 is pulled. At this time, the spring is deformed and stores elastic potential energy. The end of the stretching ruler 22 away from the spring is firmly fixed to the top of the other top buckle ring 1102, thereby ensuring that during the measurement process, the stretching ruler 22 can accurately reflect the change in the distance between the two well neck support sleeves 111;

[0056] See Figure 7 It can be seen that horizontal rods 23 are fixedly installed on the top of the two top buckle rings 1102, and a measuring cavity 24 is formed between the two horizontal rods 23. The size of the measuring cavity 24 will change with the expansion and contraction of the two well neck support sleeves 111. By observing the changes in the measuring cavity 24 and combining with the scale marks on the stretch ruler 22, the construction personnel can intuitively obtain the current distance data between the two well neck support sleeves 111, and then judge whether the expansion and contraction distance of the well neck support sleeve 111 meets the inner diameter size requirements of the well neck body 10, thereby realizing the measurement of the inner diameter size of the well neck body 10 and auxiliary prompts for the expansion and contraction distance of the well neck support sleeve 111.

[0057] In addition, a buckle (not shown in the figure) is provided at the side end of the shaft. When the well neck support sleeve 111 is adjusted to the appropriate position, the buckle is operated to limit the free rotation of the shaft (using existing technology, which will not be described here). At this time, the spring keeps the tensioned state of the stretching ruler 22 locked, and the stretching ruler 22 cannot be stretched or contracted. From the top perspective, the fixed stretching ruler 22 and the two inner rods 132 together form a semi-closed top enclosure 3. It should be noted that in actual application, the distance between the inner rod 132 and the top buckle ring 1102 is relatively close, so that the stretching ruler 22 and the inner rod 132 fit closely together. The position distance shown in the figure is only for reference, in order to more clearly introduce the position relationship. Therefore, the stretching ruler 22 and the two inner rods 132 together form a semi-closed top enclosure 3 that can withstand external vibrations, object collisions and other forces, reduce the occurrence of gap changes, and continuously and effectively reduce the situation where debris falls into the well, thereby ensuring the safety of the wellhead.

[0058] Furthermore, the installation method of the stretching ruler 22 enables it to detect whether the two well neck support sleeves 111 are in a horizontal state. Since the two ends of the stretching ruler 22 are respectively fixed on the two top buckle rings 1102, when the two well neck support sleeves 111 are installed horizontally, the stretching ruler 22 is evenly stressed and the scale display is normal. If the two well neck support sleeves 111 are installed tilted, the stretching ruler 22 will be locally tight or loose due to inconsistent stress at both ends during the stretching process, resulting in abnormal scale display or distortion of the stretching ruler 22. Construction personnel can promptly discover installation problems based on these phenomena and make adjustments. Ensuring that the two well neck support sleeves 111 are installed horizontally can make the support bracket evenly stressed, avoid local stress concentration caused by tilted installation, and reduce the risk of damage to the well neck support sleeve 111 structure. At the same time, horizontal installation can also ensure the regularity of the top enclosure 3 structure, improve the overall protection effect and the safety and reliability of the support bracket.

[0059] Since different well neck bodies 10 have different inner diameters, in order to further improve the applicability of the support bracket body 1 , the extension piece 112 and the top buckle ring 1102 are connected in a snap-fit manner.

[0060] Combine Figure 9 As shown, the extension piece 112 and the top buckle ring 1102 are connected by a snap-on connection. In actual application, the extension piece 112 is provided with an elastically retractable snap-on structure, and a corresponding slot is provided on the top buckle ring 1102. When installing, align the snap of the extension piece 112 with the slot of the top buckle ring 1102 and insert it. The snap automatically snaps into the slot under the action of elasticity, forming a firm connection, ensuring that during the telescopic adjustment of the support bracket, the extension piece 112 can stably drive the well neck support sleeve 111 to move. When disassembly or adjustment is required, it is only necessary to apply a certain external force to cause the snap to produce elastic deformation, so that it can be withdrawn from the slot to achieve rapid separation. This connection method not only meets the requirements of the support bracket for structural stability during use, but also facilitates operation by construction personnel, improves installation and maintenance efficiency, and reduces labor intensity.

[0061] In order to reduce the displacement of the well neck support sleeve 111, the top side ends of the two top buckle rings 1102 are provided with a snap connection groove 4, and the inside of the two snap connection grooves 4 is provided with an elastic member 41 (preferably a spiral spring member), and the other end of the two elastic members 41 is installed with a telescopic snap 42, and the ends of the two telescopic snaps 42 away from the elastic member 41 are in an inclined state.

[0062] like Figure 4 and Figure 5As shown, the top side ends of the two top buckle rings 1102 are each provided with a snap connection groove 4, and an elastic member 41 and a telescopic snap 42 are arranged inside. Specifically, the elastic member 41 is installed inside the snap connection groove 4, one end is fixed to the bottom of the groove, and the other end is connected to the telescopic snap 42, providing the telescopic snap 42 with the elastic force required for telescopic expansion. Under the action of the elastic member 41, the telescopic snap 42 can be telescopically slid in the snap connection groove 4. When the well neck support sleeve 111 is slidably installed, the inclined surface of the telescopic snap 42 away from the end of the elastic member 41 first contacts the outer wall of the well neck body 10, and as the well neck support sleeve 111 slides downward When the well neck support sleeve 111 is in a predetermined position, the telescopic buckle 42 pops out under the elastic force of the elastic member 41 and is stuck on the outer wall of the well neck body 10. The engagement of the buckle with the outer wall of the well neck body 10 forms a mechanical limit, which limits the horizontal and vertical displacement of the well neck support sleeve 111, thereby enhancing its installation stability and ensuring that the well neck support sleeve 111 continues to play its protective role reliably.

[0063] The two inner diameter panels 1101 are fixedly mounted with plug-in corner blocks 5 on one side close to the inner wall of the well neck body 10. Figure 9 As shown, the plug-in sharp corner block 5 is fixedly installed on the side of the inner diameter enclosure 1101 close to the inner wall of the well neck body 10. Its sharp shape can be inserted into the gaps, holes or uneven areas that may exist on the inner wall surface of the well neck body 10. When the well neck support sleeve 111 is installed, the plug-in sharp corner block 5 first contacts the inner wall of the well neck body 10. As the well neck support sleeve 111 is further installed, the plug-in sharp corner block 5 will embed into the inner wall of the well neck body 10, forming a mechanical connection. This connection method increases the friction and bite force between the well neck support sleeve 111 and the well neck body 10, allowing the well neck support sleeve 111 to be firmly fixed to the well neck body 10.

[0064] Working principle:

[0065] First, the two side uprights 121 of the support structure 12 are fastened to the ground on the side of the well neck body 10, and the stand 122 and the fixing rod 123 form a stable support frame; in the telescopic adjustment component 13, the telescopic sleeve rod 133 cooperates with the plug-in positioning groove 135 of the inner rod 132 through the plug-in fixing piece 134 to achieve telescopic adjustment, driving the well neck support sleeve 111 connected to it to move, and the inner diameter enclosure plates 1101 of the two semicircular structures fit the inner wall of the well neck body 10, presenting a non-fully enclosed protection; the stretching ruler 22 of the measuring structure 2 changes with the expansion and contraction of the well neck support sleeve 111, The measuring cavity 24 and the scale mark are used to assist in measuring the inner diameter of the well neck and adjusting the distance. After being fixed around the axis by snapping, the stretching ruler 22 and the inner rod 132 form a top enclosure 3 to protect the wellhead, and at the same time, the horizontal state of the well neck support sleeve 111 can be detected; the snap connection between the extension piece 112 and the top buckle ring 1102 is convenient for installation, disassembly and adjustment, and the telescopic buckle 42 on the top buckle ring 1102 and the plug-in pointed corner block 5 of the inner diameter enclosure 1101 enhance the connection stability between the well neck support sleeve 111 and the well neck body 10 from the outer wall and the inner wall respectively. The various components work together to achieve effective support for the well neck body 10.

[0066] Example 2: See Figure 6 This embodiment, based on the content provided in Example 1, aims to provide a method for assembling and disassembling a retractable temporary support bracket, and the specific steps are as follows:

[0067] Step 1: First, lift the support bracket body 1 as a whole and move it above the well neck body 10, aligning the protective structure 11 with the top position of the middle end of the well neck body 10. Then, lower the support bracket body 1 and fix the two side rods 121 on the ground on the side of the well neck body 10 to complete the initial positioning of the bracket;

[0068] Step 2: Next, separate the plug-in fixing piece 134 from the plug-in positioning groove 135 to release the fixing restriction on the telescopic sleeve 133, allowing it to slide freely on the surface of the inner rod 132. Push the telescopic sleeve 133, driving the two inner diameter panels 1101 connected to it to move toward the inner wall of the well neck body 10 until the two are tightly fitted. During this process, the stretching ruler 22 connecting the two guard structures 11 will be stretched synchronously with the movement of the inner diameter panels 1101.

[0069] Step 3: The horizontal rods 23 installed on the top of the two top buckles 1102 cooperate with each other to form a measuring cavity 24. By observing the changes in the measuring cavity 24 and combining the scale values of the stretch ruler 22, the inner diameter of the well neck body 10 can be measured. At the same time, the measured data can be used as a reference to assist in determining and indicating whether the extension and retraction distance of the well neck support sleeve 111 is appropriate to ensure that it is compatible with the well neck body 10;

[0070] Step 4: After the well neck support sleeve 111 is adjusted and installed, the winding shaft in the measuring box 21 is fixed to keep the stretching ruler 22 in a taut and fixed state. At this time, the fixed stretching ruler 22 and the two inner rods 132 together form a protective structure to assist in blocking the opening of the well neck body 10.

[0071] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A retractable temporary support bracket, comprising a support bracket body (1), wherein the support bracket body (1) is installed at the opening of a well neck body (10), and is characterized in that: The support bracket body (1) comprises a protection structure (11) and a support structure (12), and a telescopic adjustment component (13) is provided inside the support structure (12); The telescopic adjustment assembly (13) includes an inner rod (132), and two telescopic sleeve rods (133) are symmetrically sleeved on the surface of the inner rod (132). The protective structure (11) is provided with two, and the protective structure (11) includes a well neck support sleeve (111). The tops of the two well neck support sleeves (111) are both installed with extension pieces (112), and the two well neck support sleeves (111) are connected to adjacent telescopic sleeve rods (133) through the extension pieces (112). The telescopic sleeve rods (133) telescopically slide on the surface of the inner rod (132) to drive the well neck support sleeves (111) to adapt to the wellhead of the well neck body (10); A measuring structure (2) is provided between the two guard structures (11), and the measuring structure (2) can connect the two guard structures (11). During the telescopic adjustment of the two guard structures (11), the measuring structure (2) can assist the guard structures (11) in adaptive adjustment in combination with the inner diameter size of the well neck body (10), and the measuring structure (2) can block the opening of the well neck body (10) in combination with the supporting structure (12); The well neck support sleeve (111) comprises an inner diameter enclosure plate (1101) and a top buckle ring (1102), wherein the top buckle ring (1102) is fixedly mounted on the top of the inner diameter enclosure plate (1101), and two extension members (112) are mounted on the tops of the two top buckle rings (1102), and the other ends of the four extension members (112) are respectively connected to four telescopic sleeve rods (133); The measuring structure (2) comprises a measuring box (21) mounted on the side end of one of the top buckles (1102), a winding shaft mounted inside the measuring box (21), a spring mounted on the surface of the winding shaft, a stretching ruler (22) connected to the other end of the spring, an end of the stretching ruler (22) away from the spring is fixedly mounted on the top of the other top buckle (1102), and a horizontal rod (23) is fixedly mounted on the top of each of the two top buckles (1102), and the two horizontal rods (23) directly form a measuring cavity (24).

2. The retractable temporary support bracket according to claim 1, characterized in that: The support structure (12) comprises two side uprights (121), the tops of the two side uprights (121) are fixedly mounted with a stand (122), the sides of the two stands (122) away from the side uprights (121) are both branched structures, and the branch ends of the two stands (122) are fixedly mounted with a fixing rod (123).

3. The retractable temporary support bracket according to claim 2, characterized in that: The telescopic adjustment assembly (13) further includes an inner cavity (131) provided inside the four fixed rods (123), two inner rods (132) are provided, and the side ends of the inner rods (132) are fixedly mounted inside the inner cavity (131), so that the two inner rods (132) are in a parallel state, and the surfaces of the two inner rods (132) are provided with a plurality of plug-in positioning grooves (135), and the surfaces of the four telescopic sleeve rods (133) are installed with plug-in fixing members (134).

4. The retractable temporary support bracket according to claim 3, characterized in that: The areas of the two inner rods (132) close to the well neck body (10) and the stretching ruler (22) together form a top enclosure (3).

5. The retractable temporary support bracket according to claim 4, characterized in that: The extension piece (112) and the top buckle ring (1102) are in a snap-fit connection.

6. The retractable temporary support bracket according to claim 5, characterized in that: The top side ends of the two top buckle rings (1102) are each provided with a buckle connection groove (4), the interior of the two buckle connection grooves (4) is provided with an elastic member (41), the other ends of the two elastic members (41) are each installed with a telescopic buckle (42), and the ends of the two telescopic buckles (42) away from the elastic member (41) are both in an inclined state.

7. The retractable temporary support bracket according to claim 1, characterized in that: A plug-in sharp corner block (5) is fixedly mounted on one side of the two inner diameter enclosure plates (1101) close to the inner wall of the well neck body (10).

8. A rapid installation method for operating the retractable temporary support bracket according to claim 3, characterized in that: The method comprises the following steps: S1. First, the support bracket body (1) is lifted as a whole and moved above the well neck body (10), so that the protective structure (11) is aligned with the top position of the middle section of the well neck body (10), and then the support bracket body (1) is lowered, and the two side uprights (121) are fixed on the ground on the side of the well neck body (10), completing the initial positioning of the bracket; S2. Next, the plug-in fixing member (134) and the plug-in positioning groove (135) are separated to release the fixing restriction on the telescopic sleeve (133), so that the telescopic sleeve (133) can slide freely on the surface of the inner rod (132), and the telescopic sleeve (133) is pushed to drive the two inner diameter panels (1101) connected thereto to move toward the inner wall of the well neck body (10) until the two are tightly fitted. During this process, the stretching ruler (22) connecting the two protective structures (11) will be stretched synchronously with the movement of the inner diameter panels (1101); S3. The horizontal rods (23) installed on the top of the two top buckles (1102) cooperate with each other to form a measuring cavity (24). By observing the changes in the measuring cavity (24) and combining the scale value of the stretch ruler (22), the inner diameter of the well neck body (10) can be measured. At the same time, the measured data is used as a reference to assist in judging and prompting whether the telescopic distance of the well neck support sleeve (111) is appropriate to ensure that it is adapted to the well neck body (10); S4. After the adjustment and installation of the well neck support sleeve (111) is completed, the winding shaft in the measuring box (21) is fixed to keep the stretching ruler (22) in a tight and fixed state. At this time, the fixed stretching ruler (22) and the two inner rods (132) together form a protective structure to assist in blocking the opening of the well neck body (10).

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