A wellbore hoisting device

Abstract

The utility model belongs to hoisting equipment technical field, especially relate to a well shaft hoisting device, the main support rod in this well shaft hoisting device can be through sliding sleeve and realize unfolding and retraction, when hoisting the well shaft by using this well shaft hoisting device, can put this well shaft hoisting device into the well shaft, make all main support rod unfold through sliding sleeve, to make all the support footboard on main support rod all adhere to well shaft inner wall, fix well shaft through the friction between support footboard and well shaft inner wall, hoist lifting rod again by using hoisting device, hoist well shaft stably to installation point and position, after completing the positioning of well shaft, make all main support rod retract through sliding sleeve, to make all the support footboard on main support rod separate with well shaft inner wall, can take out this well shaft hoisting device from well shaft easily, need not move the well shaft of completing positioning, thereby guarantee the installation accuracy of well shaft.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting equipment technology, and specifically relates to a well shaft hoisting device. Background Technology

[0002] Currently, with the rapid development of urban infrastructure, the renovation of old urban areas and the construction of new cities are gradually expanding, resulting in a large number of rainwater and sewage separation projects, and inspection wells, as an essential facility, are also gradually increasing.

[0003] The manhole casing is an essential component of the inspection well. Most manhole casings are prefabricated and must be transported from the factory to the construction site before construction. During installation, ropes are tied to the casing, and the hoisting end of a lifting device hooks the ropes to vertically (with the axis vertical) the prepared manhole casing to the installation position. Manual assistance is then used to position the casing correctly. After positioning, the hoisting end is lowered to place the casing on the installation point. Finally, the ropes tied to the casing are removed, completing the installation.

[0004] However, during the hoisting process, the well casing is easily affected by the binding position, causing it to be tilted when suspended in the air, which makes it difficult to position the well casing and poses certain safety hazards. At the same time, after the well casing is placed on the installation point, it needs to be moved to remove the rope from the well casing after it has been positioned, and the process of moving the well casing will affect the installation accuracy of the well casing. Utility Model Content

[0005] This utility model provides a well shaft hoisting device to solve the technical problems in the prior art, where the method of hoisting well shafts by binding them with ropes is not convenient for positioning the well shaft, and the well shaft that has been positioned needs to be moved when the ropes are removed, which affects the installation accuracy of the well shaft.

[0006] To solve the above problems, this utility model is achieved through the following technical solution:

[0007] A wellbore hoisting device includes a lifting rod and a main support rod;

[0008] The number of main support rods is at least two, and all the main support rods are arranged circumferentially around the lifting rod at equal intervals. The fixed end of the main support rod is hinged to the fixed end of the lifting rod.

[0009] The lifting rod is equipped with a sliding sleeve that slides along the length of the lifting rod. The side wall of the sliding sleeve is hinged with a number of tie rods equal to the number of main support rods. The end of each tie rod away from the sliding sleeve is hinged to the middle of each main support rod.

[0010] The movable end of the main strut is equipped with a support foot plate;

[0011] The main support rods are deployed and retracted by sliding sleeves; when the main support rods are deployed, the support feet on all the main support rods are in contact with the inner wall of the well shaft.

[0012] To better realize this utility model, the above structure is further optimized by providing a limiting rod between two adjacent main support rods to limit the unfolding angle of the main support rod.

[0013] To better realize this utility model, further optimizations are made to the above structure. The limiting rod includes two connecting rods, the fixed ends of the two connecting rods are hinged, and the movable ends of the two connecting rods are respectively hinged to the middle of two adjacent main support rods.

[0014] To better realize this utility model, the above structure is further optimized by providing a circular connecting plate at the fixed end of the lifting rod.

[0015] The axis of the lifting rod coincides with the axis of the connecting plate, and the fixed end of the main support rod is hinged to the connecting plate.

[0016] To better realize this utility model, the above structure is further optimized by providing a lifting ring at the lifting end of the lifting rod.

[0017] To better realize this utility model, further optimizations are made to the above structure, wherein the support foot plate includes a connecting plate and a pressure plate;

[0018] The two opposite sides of the pressure plate are the mating surface and the mounting surface, respectively.

[0019] The connecting plate is hinged to the movable end of the main support rod. The side of the connecting plate away from the main support rod is connected to the mounting surface of the pressure plate, and the plane on which the connecting plate is located is perpendicular to the mounting surface.

[0020] To better realize this utility model, further optimization is made to the above structure. The movable end of the main support rod is provided with a hinge shaft. The axis of the hinge shaft is perpendicular to the length direction of the main support rod and parallel to the horizontal plane.

[0021] The connecting plate is provided with through holes, the axis of which is perpendicular to the plane on which the connecting plate is located. The connecting plate is hinged to the movable end of the main support rod through the cooperation of the through holes and the hinge shaft.

[0022] To better realize this utility model, the above structure is further optimized by providing a rubber pad on the bonding surface to increase the roughness of the bonding surface.

[0023] Compared with the prior art, this utility model has the following advantages:

[0024] The main support rods in the well shaft hoisting device provided by this utility model can be extended and retracted through a sliding sleeve. When hoisting a well shaft using this device, the device can be placed inside the well shaft. By sliding the sleeve, all the main support rods are extended so that the support feet on all the main support rods are in contact with the inner wall of the well shaft. The well shaft is fixed by the friction between the support feet and the inner wall of the well shaft. Then, the lifting rod is hoisted using a lifting device to smoothly hoist the well shaft to the installation point for positioning. After the well shaft is positioned, all the main support rods are retracted by sliding the sleeve so that the support feet on all the main support rods are separated from the inner wall of the well shaft. The hoisting device can then be easily removed from the well shaft without moving the positioned well shaft, thus ensuring the installation accuracy of the well shaft. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of a well shaft hoisting device according to the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of a well shaft hoisting device in its initial state according to this utility model.

[0028] Figure 3 This is a schematic diagram of the well shaft hoisting device of this utility model in the unfolded state.

[0029] Figure 4 yes Figure 3 A magnified view of part A in the middle.

[0030] Figure 5 This is a schematic diagram of the structure of a well shaft hoisting device supporting a well shaft according to this utility model.

[0031] In the picture:

[0032] 1. Lifting rod; 11. Sliding sleeve; 12. Connecting plate; 13. Lifting ring;

[0033] 2. Main support rod; 21. Limiting rod;

[0034] 3. Pull rod;

[0035] 4. Support foot plate; 41. Connecting plate; 42. Pressure plate; 43. Rubber pad. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In embodiments of this utility model, such as Figures 1 to 5 As shown, the wellbore hoisting device includes a lifting rod 1 and a main support rod 2; wherein,

[0040] The number of main struts 2 is at least two, see [reference]. Figure 1 In this embodiment, there are four main support rods 2. The four main support rods 2 are arranged circumferentially around the lifting rod 1 at equal intervals. The fixed end of the main support rod 2 is hinged to the fixed end of the lifting rod 1.

[0041] The lifting rod 1 is provided with a sliding sleeve 11 that slides along the length of the lifting rod 1. The side wall of the sliding sleeve 11 is hinged with a number of tie rods 3 equal to the number of main support rods 2. The end of each tie rod 3 away from the sliding sleeve 11 is hinged to the middle of each of the main support rods 2.

[0042] The movable end of the main support rod 2 is equipped with a support foot plate 4.

[0043] When it is necessary to hoist the well casing, the worker can insert the well casing hoisting device into the well casing through the opening at the top of the well casing, and slide the sliding sleeve 11 toward the fixed end of the lifting rod 1. During the sliding process, the sliding sleeve 11 can push the main support rod 2 through the pull rod 3, causing the main support rod 2 to rotate around its hinge point with the lifting rod 1. The angle between the main support rod 2 and the lifting rod 1 increases until the support foot plate 4 on the movable end of the main support rod 2 is in contact with the inner wall of the well casing, that is, the well casing hoisting device is in the unfolded state. See [link to documentation]. Figure 5 ;

[0044] Subsequently, the staff can use the lifting end of the lifting device to connect to the lifting end of the lifting rod 1 and lift the lifting rod 1 upward. In the initial stage of lifting, the support foot plate 4 will be affected by friction (the friction between the support foot plate 4 and the inner wall of the well) and drive the main support rod 2 to continue to rotate around the hinge point between it and the lifting rod 1 until it can no longer rotate, that is, the main support rod 2 is extended to the maximum angle. At this time, the position of the main support rod 2 no longer changes.

[0045] During the continuous lifting process, the well casing will be lifted by the hoisting device along with the well casing hoisting device under the action of friction. Then, the hoisting device can be used to lift the well casing to the installation point of the well casing.

[0046] When the well casing is close to the installation point, the staff can help adjust the position of the well casing until the position of the well casing is determined. Then, the lifting end controlled by the lifting device can be lowered to place the well casing on the installation point.

[0047] Subsequently, the workers can push the shaft hoisting device downwards into the shaft, disengaging the support foot plate 4 from the inner wall of the shaft. Then, the sliding sleeve 11 can slide along the movable end of the lifting rod 1. During this sliding process, the sliding sleeve 11 can pull the main support rod 2 via the tie rod 3, causing the main support rod 2 to rotate around its hinge point with the lifting rod 1. The angle between the main support rod 2 and the lifting rod 1 decreases until the shaft hoisting device is retracted to its initial state. See [link to relevant documentation]. Figure 2 ;

[0048] At this point, the workers can easily remove the wellbore hoisting device from the wellbore and use the hoisting equipment to lift the wellbore hoisting device to the wellbore stacking area for the next wellbore hoisting operation.

[0049] When in use, this wellbore hoisting device can stably support the wellbore, allowing it to be smoothly hoisted to the installation point. After hoisting is completed, the wellbore hoisting device can be easily removed without moving the positioned wellbore, making the removal of the wellbore hoisting device more convenient and ensuring the installation accuracy of the wellbore.

[0050] It should be noted that the number of main support rods 2 is not limited to four; it can also be set to two, three, five, or even more. All of the above-mentioned number of main support rods 2 can support the well shaft and achieve the fixation of the well shaft. The specific number can be selected according to the conditions of the construction site. For example, if the well shaft is large in size or heavy in weight, the stability and safety of the hoisting can be ensured by increasing the number of main support rods 2.

[0051] In some embodiments, a limiting rod 21 for limiting the unfolding angle of the main support rod 2 is provided between two adjacent main support rods 2.

[0052] Specifically, the limiting rod 21 includes two connecting rods, the fixed ends of the two connecting rods are hinged, and the movable ends of the two connecting rods are respectively hinged to the middle of the two adjacent main support rods 2.

[0053] When the worker pushes the sliding sleeve 11 toward the fixed end of the lifting rod 1, the main support rod 2 will rotate around its hinge end with the lifting rod 1, increasing the angle between the main support rod 2 and the lifting rod 1; at this time, the angle between the two connecting rods that connect the two adjacent main support rods 2 will also gradually increase.

[0054] Until the length directions of the two links are parallel, that is, when the angle between the two links is 180°, see [reference needed]. Figure 1 and Figure 3 The main strut 2 will then be constrained by the connecting rod and will no longer rotate, thus limiting the unfolding angle of the main strut 2.

[0055] In some embodiments, the fixed end of the lifting rod 1 is provided with a circular connecting plate 12; wherein,

[0056] The axis of the lifting rod 1 coincides with the axis of the connecting plate 12. The upper end face of the connecting plate 12 is provided with an equal number of ear plates as the main support rod 2. The ear plates are arranged around the circumference of the connecting plate 12 at equal intervals. The plane where the ear plates are located is perpendicular to the plane where the connecting plate 12 is located. The ear plates are provided with hinge holes, and the axis of the hinge holes is perpendicular to the plane where the ear plates are located.

[0057] The fixed end of the main support rod 2 is provided with a hinge hole. The hinge hole of the main support rod 2 is opposite to the hinge hole on the ear plate. The hinge shaft passes through the two hinge holes in sequence, so that the fixed end of the main support rod 2 is hinged to the connecting plate 12, so that the main support rod 2 can alternate between the initial state and the unfolded state.

[0058] In some embodiments, the movable end of the lifting rod 1 is provided with a lifting ring 13 to facilitate the connection and disassembly of the lifting end of the lifting device with the well shaft lifting device, thereby making the use of the well shaft lifting device more convenient.

[0059] In some embodiments, the aforementioned support foot plate 4 includes a connecting plate 41 and a pressure plate 42, see [link / reference]. Figure 4 ;in,

[0060] The two opposite sides of the pressure plate 42 are the mating surface and the mounting surface, respectively;

[0061] The connecting plate 41 is hinged to the movable end of the main support rod 2. The side of the connecting plate 41 away from the main support rod 2 is connected to the mounting surface of the pressure plate 42, and the plane on which the connecting plate 41 is located is perpendicular to the mounting surface.

[0062] When the workers place the hoisting device in the well shaft and slide the sliding sleeve 11 to unfold the main support rod 2, the position of the support foot plate 4 needs to be adjusted. That is, the connecting plate 41 is rotated around the hinge point between it and the main support rod 2 so that the plane where the pressure plate 42 is located coincides with the plane where the inner wall of the well shaft is located.

[0063] During the continuous sliding of the sliding sleeve 11, the distance between the pressure plate 42 and the inner wall of the well shaft decreases until the contact surface of the pressure plate 42 is in contact with the inner wall of the well shaft, so as to better support the well shaft and facilitate the hoisting of the well shaft.

[0064] Preferably, the contact surface is an arc surface, which increases the contact area between the pressure plate 42 and the inner wall of the well, thereby increasing the friction between the contact surface and the inner wall of the well to improve the stability when hoisting the well.

[0065] In some embodiments, the movable end of the main support rod 2 is provided with a hinge shaft, the axis of which is perpendicular to the length direction of the main support rod 2 and parallel to the horizontal plane.

[0066] The connecting plate 41 is provided with a through hole, the axis of which is perpendicular to the plane on which the connecting plate 41 is located. The connecting plate 41 is hinged to the movable end of the main support rod 2 through the through hole and the hinge shaft, so that the connecting plate 41 can rotate freely around the axis of the hinge shaft, so as to adjust the position of the pressure plate 42.

[0067] In some embodiments, a rubber pad 43 is provided on the contact surface. The rubber pad 43 can increase the roughness of the contact surface to increase the friction between the contact surface and the inner wall of the well shaft during the hoisting process, thereby preventing the well shaft from separating from the well shaft hoisting device and making the hoisting of the well shaft safer.

[0068] In addition, the rubber pad can also protect the well casing and prevent the pressure plate 42 from scraping against the inner wall of the well casing, thus preventing damage to the inner wall of the well casing.

[0069] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A wellbore hoisting device, characterized in that: Includes lifting rod (1) and main support rod (2); The number of main support rods (2) is at least two. All the main support rods (2) are arranged around the lifting rod (1) at equal intervals. The fixed end of the main support rod (2) is hinged to the fixed end of the lifting rod (1). A sliding sleeve (11) is provided on the lifting rod (1) and slides along the length of the lifting rod (1). A number of tie rods (3) equal to the number of main support rods (2) are hinged on the side wall of the sliding sleeve (11). The end of all tie rods (3) away from the sliding sleeve (11) is hinged to the middle of all main support rods (2). The movable end of the main support rod (2) is provided with a support foot plate (4); The main support rod (2) is extended and retracted by sliding sleeve (11); when the main support rod (2) is in the extended state, the support foot plates (4) on all the main support rods (2) are in contact with the inner wall of the well barrel.

2. The wellbore hoisting device according to claim 1, characterized in that: A limiting rod (21) is provided between two adjacent main support rods (2) to limit the unfolding angle of the main support rod (2).

3. The wellbore hoisting device according to claim 2, characterized in that: The limiting rod (21) includes two connecting rods, the fixed ends of the two connecting rods are hinged together, and the movable ends of the two connecting rods are respectively hinged to the middle of the two adjacent main support rods (2).

4. The wellbore hoisting device according to claim 1, characterized in that: The fixed end of the lifting rod (1) is provided with a circular connecting plate (12). The axis of the lifting rod (1) coincides with the axis of the connecting plate (12), and the fixed end of the main support rod (2) is hinged to the connecting plate (12).

5. The wellbore hoisting device according to claim 1, characterized in that: The lifting rod (1) is equipped with a lifting ring (13) at the lifting end.

6. The wellbore hoisting device according to claim 1, characterized in that: The support foot plate (4) includes a connecting plate (41) and a pressure plate (42); The two opposite sides of the pressure plate (42) are the mating surface and the mounting surface, respectively; The connecting plate (41) is hinged to the movable end of the main support rod (2). The side of the connecting plate (41) away from the main support rod (2) is connected to the mounting surface of the pressure plate (42), and the plane where the connecting plate (41) is located is perpendicular to the mounting surface.

7. The wellbore hoisting device according to claim 6, characterized in that: The movable end of the main support rod (2) is provided with a hinge shaft. The axis of the hinge shaft is perpendicular to the length direction of the main support rod (2) and parallel to the horizontal plane. The connecting plate (41) is provided with a through hole, the axis of which is perpendicular to the plane on which the connecting plate (41) is located. The connecting plate (41) is hinged to the movable end of the main support rod (2) through the cooperation of the through hole and the hinge shaft.

8. The wellbore hoisting device according to claim 6, characterized in that: The bonding surface is provided with a rubber pad (43) to increase the roughness of the bonding surface.

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