Telescopic temporary supporting bracket and rapid mounting method thereof

Abstract

The invention relates to the technical field of vertical shaft supporting brackets, in particular to a telescopic temporary supporting bracket and a rapid installation method thereof.The telescopic temporary supporting bracket comprises a supporting bracket body, the supporting bracket body is installed at an opening of a well neck body, the supporting bracket body comprises a protection body structure and a supporting body structure, and a telescopic adjusting assembly is arranged in the supporting body structure; the two protection body structures are connected through a measuring structure. Segmented covering protection is achieved through the telescopic adjusting assembly, the well neck stress can be evenly dispersed, and the maintenance cost is reduced; a stretching ruler in the measuring structure can measure the distance in real time, the telescopic position of the well neck supporting sleeve is accurately controlled, and the mounting adaptability and stability are improved; the stretching ruler and the inner rod form a semi-closed top enclosure, the spring enables the semi-closed top enclosure to be tensioned, gap changes can be reduced after the semi-closed top enclosure is locked, the well mouth protection effect is effectively guaranteed, and it is guaranteed that the supporting bracket reliably operates under various working conditions.

Description

Technical Field

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

[0002] A shaft is a vertical or nearly vertical shaft, usually dug downward from the ground, passing through different strata. Its shape is usually circular and consists of a wellhead, a shaft body, and a bottom. The diameter or cross-sectional size of a small shaft is generally 1 - 3 meters, and the well depth is relatively shallow. It is often used for auxiliary channels of small mine shafts, underground pipeline inspection wells, etc. During the construction process of a shaft, temporary support of the wellhead is a key link to ensure the safety and smooth progress of construction. Its main functions include supporting the wellhead and providing shielding protection. In terms of support, traditional temporary support structures for wellheads are mostly of fixed size and are difficult to adapt to wellheads of different diameters or shapes. Especially in the construction of small shafts, the problem of poor adaptability of existing support structures is more prominent. Small shafts have small diameters and shallow depths, and conventional support structures are difficult to meet their space limitations and construction requirements. When encountering changes in wellhead size or special geological conditions, it is necessary to re - manufacture or modify the support structure, which not only consumes a large amount of time and labor costs but also delays the construction progress. Currently, in order to prevent large debris from falling into the wellhead, fine plates are usually used to cover in the prior art. Multiple fine plates form a vertical net at the wellhead to block large debris without affecting the light inside the well. During the construction process of the shaft, operations such as rock drilling and mechanical excavation will generate vibrations, which are likely to cause the covering net blocked at the wellhead to shift, resulting in the situation of vertical plate deviation. In view of this, there is an urgent need for a telescopic temporary support bracket and a rapid installation method thereof to solve the above problems. Summary of the Invention

[0003] The present invention provides a telescopic temporary support bracket and a rapid installation method thereof. Through the improvement of the support bracket, the support bracket is enabled to have functions such as rapid installation adjustment and precise measurement and positioning, so as to perform safe and efficient support operations for the well neck body in a complex and changeable engineering construction environment, ensure the smooth progress of the construction process and the long - term stability of the wellhead, thereby solving the problems raised in the above background art, that is: Traditional temporary support structures for wellheads have the problem that their fixed sizes are difficult to adapt to wellheads of different diameters or shapes. Especially in the construction of small shafts, they have poor adaptability, and in case of special situations, modification is required, resulting in construction period delays. Moreover, the existing fine - plate covering net for preventing debris from falling into the wellhead is prone to shift under the vibration of shaft construction operations.

[0004] To achieve the above object, one of the objects of the present invention is to provide a telescopic temporary support bracket, which includes a support bracket body installed at the opening of the shaft neck body. The support bracket body includes a protection structure and a support structure, and a telescopic adjustment component is arranged inside the support structure; The telescopic adjustment component includes an inner rod, and two telescopic sleeve rods are symmetrically sleeved on the surface of the inner rod. There are two protection structures, and the protection structure includes a shaft neck support sleeve. Both of the two shaft neck support sleeves are connected to the adjacent telescopic sleeve rod through an extension piece. The telescopic sleeve rod slides telescopically on the surface of the inner rod to drive the shaft neck support sleeve to adapt to the shaft neck of the shaft neck body; The two protection structures are connected by a measurement structure. During the telescopic adjustment of the two protection structures, the measurement structure can assist the protection structure to perform adaptive adjustment in combination with the inner diameter size of the shaft neck body. Moreover, the measurement structure can block the opening of the shaft neck body in combination with the support structure.

[0005] In the above technical solution, by designing the support bracket body as a telescopic structure including a protection structure, a support structure and a telescopic adjustment component, the shaft neck support sleeve can adaptively adjust to the shaft neck of the shaft neck body with different sizes, effectively solving the problem of poor adaptability of the traditional fixed-size support structure; at the same time, the measurement structure is used to assist in controlling the adjustment distance during the adjustment process, and the support structure is combined to block and protect the wellhead. Compared with the traditional protection method of easy displacement of thin plates covering, the stability and reliability of the protection are greatly improved, not only reducing the labor and time costs, but also improving the construction efficiency and ensuring the safety of shaft construction.

[0006] On this basis, the extension piece and the top snap ring are connected in a snap connection. The extension piece and the top snap ring adopt an elastic connection method of snap and slot. When installed, the snap automatically snaps into the slot to ensure firm connection, meeting the stability requirements of the telescopic adjustment of the support bracket; when disassembling or adjusting, the external force deforms the snap to separate, which is convenient to operate, effectively improving the installation and maintenance efficiency and reducing the labor intensity.

[0007] As a further improvement of this technical solution, snap connection grooves are opened at the top side ends of the two top snap rings, elastic members are arranged inside the two snap connection grooves, telescopic snaps are installed at the other ends of the two elastic members, and the ends of the two telescopic snaps away from the elastic members are in an inclined state. When the shaft neck support sleeve is installed, the telescopic snap is compressed and contracted without hindering the sliding, and automatically pops out and engages with the outer wall of the shaft neck body after reaching the position, forming a mechanical limit, effectively enhancing the installation stability of the shaft neck support sleeve.

[0008] Another object of the present invention is to provide a rapid installation method for operating the telescopic temporary support bracket described above, including the following method steps: S1. First, lift the entire support bracket body and move it above the well neck body so that the protective structure is aligned with the top position at the middle end of the well neck body. Then, lower the support bracket body and fix the two side vertical rods on the ground on the side of the well neck body to complete the preliminary positioning of the bracket. S2. Next, separate the plug - in fixing piece from the plug - in positioning groove to release the fixing restriction on the telescopic sleeve rod, enabling it to slide freely on the surface of the inner rod. Push the telescopic sleeve rod to drive the two inner - diameter enclosing plates connected to it to move towards the inner wall of the well neck body until they are closely attached. During this process, the stretching ruler connecting the two protective structures will be stretched synchronously with the movement of the inner - diameter enclosing plates. S3. The horizontal rods installed at the tops of the two top snap rings cooperate with each other to form a measuring cavity. By observing the changes in the measuring cavity and combining the scale values of the stretching ruler, the inner - diameter size 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 prompting whether the telescopic distance of the well neck support sleeve is appropriate to ensure its adaptation to the well neck body. S4. After the installation of the well neck support sleeve is adjusted and completed, fix the winding shaft in the measuring box so that the stretching ruler is kept in a taut and fixed state. At this time, the fixed stretching ruler and the two inner rods together form a protective structure to assist in blocking the opening of the well neck body.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: In this retractable temporary support bracket and its rapid installation method, the telescopic function is realized through the telescopic adjustment component, and the opening of the well neck body can be covered and protected according to the size of the wellhead. By adopting the segmented covering method, the segmented covering protection reduces the full - area covering of the well neck body, enabling the well neck to more evenly disperse stress 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 damaged section structure needs to be replaced without disassembling the entire covering structure, reducing the maintenance workload and cost. At the same time, a measuring structure is arranged between the two well neck support sleeves. The stretching ruler in the measuring structure connects the top snap rings of the two well neck support sleeves. When adjusting the telescopic distance between the well neck support sleeves, the stretching ruler can measure the distance between the two well neck support sleeves in real time. Combining with the original inner - diameter size of the well neck body, the telescopic position of the well neck support sleeve can be accurately controlled to ensure the close fit between the support bracket and the well neck body, improving the adaptability and stability of the installation of the support bracket and ensuring the protection effect. In addition, the stretching ruler of the measuring structure and the two inner rods together form a top enclosure. The inner rods are fixedly installed inside the fixed rods of the supporting structure, providing a stable support framework. The stretching ruler is installed on the winding shaft inside the measuring box, and the surface of the winding shaft is equipped with a clockwork spring. During the unfolding process of the stretching ruler, the clockwork spring deforms to generate elastic potential energy, keeping the stretching ruler always in a tensioned state. When the installation and adjustment of the support bracket are completed and the two ends of the stretching ruler are respectively fixed on the two top snap rings, the stretching ruler is set to a locked state to form a tightened protection. From the top view, the two parallel inner rods and the stretching ruler in a tensioned and locked state together constitute a semi-closed enclosure contour, effectively reducing the gap change of the enclosure structure and continuously ensuring the protection effect on the opening of the well neck body. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a top view of the installation of the support bracket body of the present invention; Figure 3 is a side view of the installation of the support bracket body of the present invention; Figure 4 is a schematic cross-sectional view of the protective structure during the installation of the support bracket body of the present invention; Figure 5 is of the present invention Figure 4 schematic diagram of the structure at position A; Figure 6 is a schematic diagram of the structure during the installation process of the support bracket body of the present invention; Figure 7 is a schematic diagram of the overall exploded structure of the present invention; Figure 8 is a schematic diagram of the structure of the telescopic adjustment assembly of the present invention; Figure 9 is a schematic diagram of the protective structure of the present invention.

[0011] The meanings of the various reference numerals in the figures are as follows: 1. Support bracket body; 11. Protective structure; 12. Supporting structure; 13. Telescopic adjustment assembly; 10. Well neck body; 111. Well neck support sleeve; 1101. Inner diameter enclosure board; 1102. Top snap ring; 112. Extension piece; 121. Side vertical rod; 122. Platform; 123. Fixed rod; 131. Inner cavity; 132. Inner rod; 133. Telescopic sleeve rod; 134. Plug-in fixing part; 135. Plug-in positioning groove; 2. Measuring structure; 21. Measuring box; 22. Stretching ruler; 23. Horizontal rod; 24. Measuring cavity; 3. Top enclosure; 4. Snap connection groove; 41. Elastic member; 42. Telescopic snap 5. Insertion pointed corner block Specific implementation mode

[0012] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0013] Embodiment 1: Please refer to Figures 1 - 3 As shown, the purpose of this embodiment is to provide a telescopic temporary support bracket, which includes a support bracket body 1. The support bracket body 1 is installed at the opening of the shaft neck body 10. The support bracket body 1 includes a protective structure 11 and a support structure 12. A telescopic adjustment assembly 13 is arranged inside the support structure 12; The telescopic adjustment assembly 13 includes an inner rod 132. Two telescopic sleeve rods 133 are symmetrically sleeved on the surface of the inner rod 132. There are two protective structures 11. The protective structure 11 includes a shaft neck support sleeve 111. Both shaft neck support sleeves 111 are connected to the adjacent telescopic sleeve rods 133 through extension members 112. The telescopic sleeve rods 133 slide telescopically on the surface of the inner rod 132 to drive the shaft neck support sleeve 111 to adapt to the shaft neck of the shaft neck body 10; The two protective structures 11 are connected by a measurement structure 2. During the telescopic adjustment of the two protective structures 11, the measurement structure 2 can assist the protective structure 11 to adaptively adjust in combination with the inner diameter size of the shaft neck body 10. Moreover, the measurement structure 2 can block the opening of the shaft neck body 10 in combination with the support structure 12.

[0014] Before carrying out the support work, it is necessary to fix the support bracket, and the fixing function of the support bracket body 1 is realized by the support structure 12. In combination with Figure 3 As shown, the specific structure of the support structure 12 is disclosed. The support structure 12 includes two side vertical rods 121. A platform 122 is fixedly installed at the top of each of the two side vertical rods 121. One side of each of the two platforms 122 away from the side vertical rod 121 is a branch structure, and a fixing rod 123 is fixedly installed at the branch end of each of the two platforms 122.

[0015] As can be seen from Figure 7, the support structure 12 is composed of two side vertical rods 121, a platform 122 and a fixing rod 123. Among them, the two side vertical rods 121 are vertically arranged and can be directly and firmly connected to the ground on the side of the well neck body 10 through bolts, embedded parts, etc. to form stable bottom support points, ensuring that the entire support bracket will not displace or overturn during use. The platform 122 at the top of the side vertical rod 121 is fixedly installed by welding or high-strength bolt connection. The side away from the side vertical rod 121 is designed as a branch structure, which can effectively disperse the pressure transmitted from above, expand the connection range at the same time, and enhance the bearing capacity and stability of the platform 122. The fixing rod 123 fixedly installed at the branch end of the platform 122 provides a stable installation basis for the subsequent installation of the telescopic adjustment component 13.

[0016] Secondly, the specific structure of the telescopic adjustment component 13 is disclosed. The telescopic adjustment component 13 further includes inner cavities 131 opened in the four fixing rods 123. There are two inner rods 132, and the side ends of the inner rods 132 are fixedly installed inside the inner cavities 131, so that the two inner rods 132 are in a parallel state. A plurality of insertion positioning grooves 135 are opened on the surfaces of the two inner rods 132, and insertion fixing parts 134 are installed on the surfaces of the four telescopic sleeve rods 133.

[0017] Combined with Figure 7 As shown, inner cavities 131 are opened in the four fixing rods 123. The side ends of the two inner rods 132 are respectively fixedly installed in the inner cavities 131 of the corresponding fixing rods 123, so that the two inner rods 132 are kept parallel. A plurality of insertion positioning grooves 135 are evenly distributed on the surfaces of the two inner rods 132 for positioning. The four telescopic sleeve rods 133 are respectively sleeved on the surfaces of the inner rods 132, and the insertion fixing parts 134 installed on their surfaces can be inserted into the insertion positioning grooves 135 of the inner rods 132. When adjustment is needed, the insertion fixing parts 134 are pulled out from the insertion positioning grooves 135, and the telescopic sleeve rods 133 can slide on the surfaces of the inner rods 132. After adjusting to the appropriate position, the insertion fixing parts 134 are inserted into the corresponding insertion positioning grooves 135 for fixation, so as to realize the adjustment of the position of the protection structure 11 to adapt to the size of the well neck body 10.

[0018] The well neck support sleeve 111 includes an inner diameter enclosing plate 1101 and a top snap ring 1102. The top snap ring 1102 is fixedly installed at the top of the inner diameter enclosing plate 1101. Two extension parts 112 are installed at the tops of the two top snap rings 1102, and the other ends of the four extension parts 112 are respectively connected to the four telescopic sleeve rods 133.

[0019] Combined with Figure 7 and Figure 8As shown, the well neck support sleeve 111 is composed of an inner diameter enclosure plate 1101 and a top buckle ring 1102. Both inner diameter enclosure plates 1101 are 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 rings 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 respectively connected to four telescopic sleeve rods 133. This connection method enables the well neck support sleeve 111 to form a linkage relationship with the telescopic adjustment component 13. When the telescopic sleeve rod 133 is telescopically 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.

[0020] 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, thereby reducing the difficulty and cost of construction. From the perspective of stress, non-fully enclosed protection allows the well neck body 10 to have a certain deformation space when subjected to force. 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, thereby 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.

[0021] 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. A spring is installed on the surface of the winding shaft. The other end of the spring is connected to a stretching ruler 22. One 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 tops of the two top buckle rings 1102. The two horizontal rods 23 directly form a measuring cavity 24.

[0022] 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.

[0023] Combination Figure 5, the measuring box 21 is installed at the side end of one of the top snap rings 1102 and is installed inside the measuring box 21 around an axis. A clockwork spring is wound around its surface. One end of the clockwork spring is fixed on the axis, and the other end is connected to the stretching ruler 22. This connection method enables the stretching ruler 22 to automatically retract into the measuring box 21 under the action of the elastic restoring force of the clockwork spring when not pulled by an external force. When the distance between the two well neck support sleeves 111 changes, the stretching ruler 22 is pulled. At this time, the clockwork spring deforms and stores elastic potential energy. The end of the stretching ruler 22 far from the clockwork spring is firmly fixed on the top of the other top snap ring 1102, so as to ensure that during the measurement process, the stretching ruler 22 can accurately reflect the distance change between the two well neck support sleeves 111; Refer to Figure 7 It can be seen that at the top of the two top snap rings 1102, horizontal rods 23 are fixedly installed. 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 change of the measuring cavity 24 and combining with the scale markings on the stretching 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, so as to realize the measurement of the inner diameter size of the well neck body 10 and the auxiliary prompt for the expansion and contraction distance of the well neck support sleeve 111.

[0024] In addition, a snap (not shown in the figure) is provided at the side end of the axis. After the well neck support sleeve 111 is adjusted to the appropriate position, the snap is operated to restrict the free rotation of the axis (using the prior art, not elaborated here). At this time, the clockwork spring that keeps the stretching ruler 22 in a tensioned state is locked, and the stretching ruler 22 cannot be stretched and contracted. Looking from the top view, 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 snap ring 1102 is relatively close, so that the stretching ruler 22 and the inner rod 132 are closely matched. The position distance shown in the figure is only for illustration to introduce the position relationship more clearly. Therefore, the semi-closed top enclosure 3 formed by the stretching ruler 22 and the two inner rods 132 can withstand external vibrations, object collisions and other acting forces, reduce the occurrence of gap changes, continuously and effectively reduce the situation of sundries falling into the well, and ensure the safety of the wellhead.

[0025] 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 snap rings 1102, when the two well neck support sleeves 111 are horizontally installed, the stretching ruler 22 is evenly stressed and the scale display is normal. If the two well neck support sleeves 111 are installed obliquely, the stretching ruler 22 will be locally tightened or relaxed due to inconsistent forces at both ends during the stretching process, resulting in abnormal scale display or distortion of the stretching ruler 22. Construction workers can promptly discover installation problems based on these phenomena and make adjustments. Ensuring the horizontal installation of the two well neck support sleeves 111 can make the support bracket evenly stressed, avoid local stress concentration caused by inclined installation, reduce the risk of structural damage to the well neck support sleeve 111. At the same time, horizontal installation can also ensure the regularity of the top enclosure 3 structure, improving the overall protection effect and the safety and reliability of the support bracket.

[0026] Since the inner diameters of different well neck bodies 10 vary, in order to further improve the applicability of the support bracket body 1, the extension piece 112 and the top snap ring 1102 are connected by a snap connection.

[0027] Combined Figure 9 As shown, the extension piece 112 and the top snap ring 1102 are connected by a snap connection. In practical applications, the extension piece 112 is provided with an elastically telescopic snap structure, and a card slot is correspondingly arranged on the top snap ring 1102. When installing, align the snap of the extension piece 112 with the card slot of the top snap ring 1102 and insert it. The snap automatically snaps into the card slot under the elastic action, forming a firm connection to ensure that the extension piece 112 can stably drive the well neck support sleeve 111 to move during the telescopic adjustment of the support bracket. When disassembly or adjustment is required, only apply a certain external force to cause elastic deformation of the snap, and it can be withdrawn from the card slot to achieve rapid separation. This connection method not only meets the requirements for structural stability during the use of the support bracket but also facilitates construction workers to operate, improves the installation and maintenance efficiency, and reduces the labor intensity.

[0028] To reduce the displacement of the well neck support sleeve 111, snap connection grooves 4 are provided at the top side ends of the two top snap rings 1102. Elastic members 41 (preferably spiral spring members) are arranged inside the two snap connection grooves 4. The other ends of the two elastic members 41 are both installed with telescopic snaps 42, and the ends of the two telescopic snaps 42 away from the elastic members 41 are both in an inclined state.

[0029] As Figure 4 and Figure 5As shown, snap connection grooves 4 are provided at the top side ends of both top snap rings 1102, 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, with one end fixed to the bottom of the groove and the other end connected to the telescopic snap 42, providing the elastic force required for the telescopic snap 42 to expand and contract. Under the action of the elastic member 41, the telescopic snap 42 can slide telescopically in the snap connection groove 4. When the well neck support sleeve 111 is slidably installed, the inclined surface at the end of the telescopic snap 42 away from the elastic member 41 first contacts the outer wall of the well neck body 10. As the well neck support sleeve 111 slides downward, the outer wall of the well neck body 10 exerts pressure on the inclined surface, causing the telescopic snap 42 to overcome the elastic force of the elastic member 41 and contract into the snap connection groove 4, thus not hindering the sliding installation process of the well neck support sleeve 111. When the well neck support sleeve 111 slides to a predetermined position, the telescopic snap 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. Through the snap engagement with the outer wall of the well neck body 10, mechanical limit is formed to restrict the displacement of the well neck support sleeve 111 in the horizontal and vertical directions, enhance its installation stability, and ensure that the well neck support sleeve 111 continuously and reliably plays a protective role.

[0030] On one side of both inner diameter gusset plates 1101 close to the inner wall of the well neck body 10, plug-in pointed blocks 5 are fixedly installed. As Figure 9 shown, the plug-in pointed blocks 5 are fixedly installed on one side of the inner diameter gusset plates 1101 close to the inner wall of the well neck body 10, and their sharp shapes can be inserted into the gaps, holes or uneven places 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 pointed blocks 5 first contact the inner wall of the well neck body 10. As the well neck support sleeve 111 is further installed, the plug-in pointed blocks 5 will be embedded into the inner wall of the well neck body 10 to form 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, enabling the well neck support sleeve 111 to be firmly fixed on the well neck body 10.

[0031] Working principle: First, the two side vertical rods 121 of the support structure 12 are firmly connected to the ground on the side of the well neck body 10, and the platform 122 and the fixed rod 123 form a stable support framework; in the telescopic adjustment assembly 13, the telescopic sleeve rod 133 is matched with the plugging positioning groove 135 of the inner rod 132 through the plugging fixing piece 134 to achieve telescopic adjustment, driving the well neck support sleeve 111 connected thereto to move. The inner diameter enclosing plates 1101 of the two semi-circular structures are attached to the inner wall of the well neck body 10, providing non-full-enclosure protection; the stretching ruler 22 of the measuring structure 2 changes as the well neck support sleeve 111 expands and contracts. The inner diameter of the well neck and the adjustment distance are measured with the assistance of the measuring cavity 24 and the scale markings. After being fixed by the shaft buckle, 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 snap ring 1102 facilitates installation, disassembly, and adjustment. The telescopic snap 42 on the top snap ring 1102 and the plugging sharp corner block 5 on the inner diameter enclosing plate 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. Each component works together to effectively support the well neck body 10.

[0032] Example 2: Refer to Figure 6 , based on the content provided in Example 1, this example aims to provide a method for loading and unloading a telescopic temporary support bracket. The specific steps are as follows: Step 1: First, lift the entire support bracket body 1 and move it above the well neck body 10 so that the protective structure 11 is aligned with the top middle position of the well neck body 10. Then lower the support bracket body 1 and fix the two side vertical rods 121 on the ground on the side of the well neck body 10 to complete the preliminary positioning of the bracket. Step 2: Next, separate the plugging fixing piece 134 from the plugging positioning groove 135 to release the fixing restriction on the telescopic sleeve rod 133, enabling it to slide freely on the surface of the inner rod 132. Push the telescopic sleeve rod 133 to drive the two inner diameter enclosing plates 1101 connected thereto to move towards the inner wall of the well neck body 10 until they are in close contact. During this process, the stretching ruler 22 connecting the two protective structures 11 will be stretched synchronously with the movement of the inner diameter enclosing plates 1101. Step 3: The horizontal rods 23 installed on the tops of the two top snap rings 1102 cooperate with each other to form a measuring cavity 24. By observing the change of the measuring cavity 24 and combining the scale values of the stretching ruler 22, the inner diameter size of the well neck body 10 can be measured. At the same time, the measurement data can be 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 its adaptation to the well neck body 10. Step 4. After the well neck support sleeve 111 is adjusted and installed, fix the winding shaft in the measuring box 21 so that the stretching ruler 22 is kept 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.

[0033] 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 by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A telescopic temporary support bracket, comprising a support bracket body (1), the support bracket body (1) is installed at the opening of the shaft neck body (10), and is characterized in that: The support bracket body (1) includes a protective structure (11) and a supporting structure (12), and a telescopic adjustment component (13) is arranged inside the supporting structure (12); The telescopic adjustment component (13) includes an inner rod (132), and two telescopic sleeve rods (133) are symmetrically sleeved on the surface of the inner rod (132). There are two protective structures (11), and the protective structure (11) includes a well neck support sleeve (111). At the top of each of the two well neck support sleeves (111), an extension piece (112) is installed, and both of the two well neck support sleeves (111) are connected to the adjacent telescopic sleeve rod (133) through the extension piece (112). The telescopic sleeve rod (133) telescopically slides on the surface of the inner rod (132) to drive the well neck support sleeve (111) to adapt to the well head of the well neck body (10); A measurement structure (2) is arranged between the two protective structures (11). The measurement structure (2) can connect the two protective structures (11). During the telescopic adjustment process of the two protective structures (11), the measurement structure (2) can assist the protective structure (11) to perform adaptive adjustment in combination with the inner diameter size of the well neck body (10). Moreover, the measurement structure (2) can block the opening of the well neck body (10) in combination with the supporting structure (12).

2. The telescopic temporary support bracket according to claim 1, characterized in that: The supporting structure (12) includes two side vertical rods (121). At the top of each of the two side vertical rods (121), a frame platform (122) is fixedly installed. One side of each of the two frame platforms (122) away from the side vertical rod (121) is a branched structure, and a fixed rod (123) is fixedly installed at the branched end of each of the two frame platforms (122).

3. The retractable temporary support bracket according to claim 2, wherein: The telescopic adjustment component (13) further includes an inner cavity (131) opened inside the four fixed rods (123). There are two inner rods (132), and the side ends of the inner rods (132) are fixedly installed inside the inner cavity (131) to make the two inner rods (132) in a parallel state. A plurality of insertion positioning grooves (135) are opened on the surface of each of the two inner rods (132), and insertion fixing parts (134) are installed on the surface of each of the four telescopic sleeve rods (133).

4. The retractable temporary support bracket according to claim 3, characterized in that: The well neck support sleeve (111) includes an inner diameter surrounding plate (1101) and a top snap ring (1102). The top snap ring (1102) is fixedly installed at the top of the inner diameter surrounding plate (1101). At the top of each of the two top snap rings (1102), two extension pieces (112) are installed, and the other ends of the four extension pieces (112) are respectively connected to the four telescopic sleeve rods (133).

5. The telescopic temporary support bracket according to claim 4, wherein: The measurement structure (2) includes a measurement box (21) installed at the side end of one of the top snap rings (1102). Inside the measurement box (21), a winding shaft is installed. A clockwork spring is installed on the surface of the winding shaft. The other end of the clockwork spring is connected to a stretching ruler (22). The end of the stretching ruler (22) far from the clockwork spring is fixedly installed at the top of the other top snap ring (1102). Horizontal rods (23) are fixedly installed at the tops of both of the top snap rings (1102), and the two horizontal rods (23) directly form a measurement cavity (24).

6. The retractable temporary support bracket according to claim 5, wherein: A top retaining fence (3) is jointly formed by the areas of the two inner rods (132) close to the well neck body (10) and the stretching ruler (22).

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

8. The retractable temporary support bracket according to claim 4, wherein: Snap connection grooves (4) are formed at the top side ends of both of the top snap rings (1102). Elastic members (41) are arranged inside the two snap connection grooves (4). The other ends of the two elastic members (41) are both installed with telescopic snap fasteners (42). The ends of the two telescopic snap fasteners (42) far from the elastic members (41) are both in an inclined state.

9. The telescopic temporary support bracket according to claim 4, wherein: Insertion pointed blocks (5) are fixedly installed on one side of both of the inner diameter enclosing plates (1101) close to the inner wall of the well neck body (10).

10. A rapid installation method for operating a retractable temporary support bracket as described in claim 5, characterized in that, It includes the following method steps: S1. First, lift the support bracket body (1) as a whole and move it above the well neck body (10) so that the protection structure (11) is aligned with the top position in the middle section of the well neck body (10). Then lower the support bracket body (1) and fix the two side vertical rods (121) on the ground on the side of the well neck body (10) to complete the preliminary positioning of the bracket; S2. Next, separate the insertion fixing member (134) from the insertion positioning groove (135) to release the fixing restriction on the telescopic sleeve rod (133) so that it can freely slide on the surface of the inner rod (132). Push the telescopic sleeve rod (133) to drive the two inner diameter enclosing plates (1101) connected thereto to move towards the inner wall of the well neck body (10) until they are closely attached. During this process, the stretching ruler (22) connecting the two protection structures (11) will be stretched synchronously with the movement of the inner diameter enclosing plates (1101); S3. The horizontal rods (23) installed at the tops of the two top snap rings (1102) cooperate with each other to form a measurement cavity (24). By observing the change of the measurement cavity (24) and combining the scale value of the stretching ruler (22), the inner diameter size of the well neck body (10) can be measured. At the same time, the measurement data can be 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 its adaptation to the well neck body (10); S4. After the well neck support sleeve (111) is adjusted and installed, fix the winding shaft in the measurement box (21) 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) jointly form a protection structure to assist in blocking the opening of the well neck body (10).

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