A precast well shaft height adjustment device

Abstract

This utility model discloses a precast well height adjustment device, relating to the field of precast well technology. The utility model includes an inner support cylinder and an outer sleeve; a turntable seat is fixed inside the inner support cylinder, on which a turntable is rotatably mounted; an inner flange is fixed to the inner wall of the upper end of the inner support cylinder, and a set of support cylinder arms are rotatably mounted in a circumferential array on it; the support cylinder arms are connected to the inner flange via a lower rotating shaft, and a push shaft is provided at one end near the turntable; a shaft groove pointing towards the axis is formed circumferentially on the turntable surface, and each push shaft is slidably sleeved in the corresponding shaft groove; the outer sleeve is fitted onto the outside of the inner support cylinder. This utility model achieves rapid centering adjustment when the well cylinder is heightened by fitting the inner support cylinder onto the upper end of the original precast well, rotating the turntable to drive each support cylinder arm to swing synchronously, pushing the outer sleeve to move until its axis coincides with the axis of the inner support cylinder, and then pouring concrete into the gap between the two cylinders, effectively ensuring the concentricity of the old and new well cylinders and preventing misalignment.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated well technology, and in particular relates to a prefabricated well shaft height adjustment device. Background Technology

[0002] In the construction of precast wells, the height adjustment and alignment accuracy of the well shaft are crucial to ensuring smooth connection of subsequent pipelines and the overall structural stability. Traditional methods rely heavily on hoisting equipment and manual assistance for coarse height adjustments, making it difficult to achieve fine and precise elevation control. During well shaft alignment, misalignment often occurs between upper and lower segments due to axial deviation, requiring repeated adjustments, which is inefficient and poses safety hazards. When pouring concrete at the connection points, the lack of effective radial positioning and support devices makes it easy for the newly poured well shaft to shift, making it difficult to ensure concentricity with the lower well shaft and affecting the sealing performance and load-bearing capacity of the structure. Existing technology lacks a dedicated device that can quickly and accurately adjust the well shaft elevation and axial alignment, which restricts the improvement of construction efficiency and quality.

[0003] To address these issues, we provide a prefabricated wellbore height adjustment device. Utility Model Content

[0004] The purpose of this utility model is to provide a precast well height adjustment device. This device involves placing an inner support cylinder on the upper end of the precast well whose height needs adjustment. A set of support cylinder arms are rotatably installed in a circumferential array on the inner edge of the inner sidewall of the upper end of the inner support cylinder. An outer sleeve is fitted on the outer side of the inner support cylinder. Rotating each support cylinder arm causes the support cylinder arm to push the outer sleeve to move, making the cylinder axis of the outer sleeve coincide with the cylinder axis of the inner support cylinder. Concrete is then poured between the inner support cylinder and the outer sleeve to prevent the poured precast well shaft from not coinciding with the precast well shaft whose height needs to be increased. A turntable is rotatably installed inside the inner support cylinder. A set of shaft grooves is circumferentially opened on the turntable. The push shaft at one end of each support cylinder arm is respectively fitted into each shaft groove. Rotating the turntable causes each support cylinder arm to rotate simultaneously, pushing the outer sleeve to a position coinciding with the axis of the inner support cylinder, thus achieving rapid and accurate assembly.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a precast well shaft height adjustment device, including an inner support cylinder and an outer sleeve. A turntable seat is fixedly sleeved inside the inner support cylinder. A turntable is rotatably installed above the turntable seat. An inner flange is fixedly provided on the inner wall of the upper end face of the inner support cylinder. A set of support cylinder arms are arranged in a circumferential array on the upper end face of the inner flange. A rotating shaft is fixedly provided in the middle section of the lower end face of the support cylinder arm. The rotating shaft in the middle section of the lower end face of the support cylinder arm is rotatably sleeved in the inner flange. A push shaft is fixedly provided on the lower end face of the support cylinder arm near the turntable. A set of shaft grooves are arranged in a circumferential array on the surface of the turntable. The length direction of the shaft grooves points to the axis of the turntable. The push shafts at the lower ends of each support cylinder arm are slidably sleeved in each shaft groove. The outer sleeve is sleeved on the outside of the inner support cylinder.

[0006] A further feature of this invention is that a wheel seat is fixedly provided at the end of the support arm away from the drive shaft, and a support wheel is vertically rotatably installed inside the wheel seat.

[0007] A further feature of this invention is that a rotating shaft is fixedly provided at the center of the upper surface of the turntable, and a rotating handle is fixedly provided at the upper end of the rotating shaft.

[0008] A further feature of this invention is that a sleeve seat is vertically slidably sleeved on the outer side of the outer sleeve, and a receiving flange is fixedly provided on the lower outer side wall of the sleeve seat.

[0009] A further feature of this invention is that a set of ball bearing seats is fixedly arranged in a circumferential array on the lower end face of the receiving edge. A hemispherical groove is formed on the lower end face of the ball bearing seat. A ball is rotatably installed in the hemispherical groove on the lower end face of the ball bearing seat. A ball sleeve is fixedly sleeved on the outer side of the ball bearing seat. The lower end face of the ball penetrates the lower end face of the ball sleeve.

[0010] A further feature of this invention is that an adapter ear is fixedly provided on the outer wall of the upper end of the outer sleeve, and a threaded ear is fixedly provided on the outer wall of the upper end face of the sleeve seat. An adjusting screw is rotatably sleeved inside the adapter ear, and the adjusting screw is screwed into the threaded ear.

[0011] A further feature of this invention is that a sliding rod lug is fixedly provided on the outer side wall of the upper end of the outer sleeve away from the adapter lug, a sliding rod sleeve lug is fixedly provided on the outer side wall of the upper end face of the sleeve seat away from the threaded lug, and a sliding rod is fixedly provided on the lower end face of the sliding rod lug, with the sliding rod vertically slidingly sleeved in the sliding rod sleeve lug.

[0012] This utility model has the following beneficial effects: 1. This utility model involves placing an inner support cylinder on the upper end of a precast well whose height needs to be adjusted, and rotatably installing a set of support cylinder arms in a circumferential array on the inner edge of the inner sidewall of the upper end of the inner support cylinder. An outer sleeve is fitted on the outer side of the inner support cylinder. Rotating each support cylinder arm causes the support cylinder arm to push the outer sleeve to move, so that the cylinder axis of the outer sleeve coincides with the cylinder axis of the inner support cylinder. Concrete is then poured between the inner support cylinder and the outer sleeve to prevent the precast well cylinder to be poured from not coinciding with the precast well cylinder that needs to be heightened.

[0013] 2. This utility model achieves rapid and accurate assembly by rotating and installing a turntable inside the inner support cylinder, and opening a set of shaft grooves in a circumferential array on the turntable. The push shafts at one end of each support cylinder arm are respectively sleeved in each shaft groove. Rotating the turntable causes each support cylinder arm to rotate simultaneously, so that the support cylinder arm pushes the outer sleeve to a position that coincides with the axis of the inner support cylinder. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0015] Figure 1 This is a schematic diagram of a prefabricated wellbore height adjustment device.

[0016] Figure 2 This is an exploded view of the inner support cylinder and the turntable base.

[0017] Figure 3 This is an exploded view of the inner support tube and the support tube arm.

[0018] Figure 4 This is an exploded view of the outer sleeve and sleeve seat.

[0019] Figure 5 This is a front view of the outer sleeve and the sleeve base.

[0020] The attached diagram lists the components represented by each number as follows: 1-Inner support cylinder, 101-Turntable seat, 101a-Turntable, 101a-1-Rotating shaft, 101a-2-Rotating handle, 101b-Shaft groove, 102-Inner snap-fit ​​edge, 103-Support cylinder arm, 103a-Push shaft, 103b-Wheel seat, 103b-1-Support cylinder wheel, 2-Outer sleeve, 201-Sleeve seat, 201a-Receiving edge, 201a-1-Ball seat, 201a-2-Ball, 201a-3-Ball sleeve, 201b-Threaded ear, 201c-Slide rod sleeve ear, 202-Adapter ear, 202a-Adjusting screw, 203-Slide rod ear, 203a-Slide rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1 Please see Figures 1 to 3 This utility model relates to a precast well height adjustment device, comprising an inner support cylinder 1 and an outer sleeve 2. The inner support cylinder 1 is fitted onto the upper end of the precast well whose height needs to be adjusted. A set of support cylinder arms 103 are circumferentially arranged and rotatably installed on the inner flange 102 of the inner sidewall of the upper end of the inner support cylinder 1. The outer sleeve 2 is fitted onto the outer side of the inner support cylinder 1. Rotating each support cylinder arm 103 causes the support cylinder arms 103 to push the outer sleeve 2 to move, aligning the cylinder axis of the outer sleeve 2 with the cylinder axis of the inner support cylinder 1. Concrete is then poured into the inner support cylinder 1 and the outer sleeve. Between the cylinders 2, to prevent the cast precast well cylinder from not coinciding with the precast well cylinder that needs to be heightened; by rotating and installing a turntable 101a inside the inner support cylinder 1, a set of shaft grooves 101b are opened in the circumferential array on the turntable 101a, and the push shafts 103a at one end of each support cylinder arm 103 are respectively sleeved in each shaft groove 101b. Rotating the turntable 101a causes each support cylinder arm 103 to rotate simultaneously, so that the support cylinder arm 103 pushes the outer cylinder 2 to a position that coincides with the axis of the inner support cylinder 1, thereby achieving rapid and accurate assembly.

[0023] Specifically, a turntable seat 101 is fixedly sleeved inside the inner support cylinder 1. A turntable 101a is rotatably mounted above the turntable seat 101. An inner flange 102 is fixedly provided on the inner wall of the upper end face of the inner support cylinder 1. A set of support cylinder arms 103 are arranged in a circumferential array on the upper end face of the inner flange 102. A rotating shaft is fixedly provided in the middle section of the lower end face of the support cylinder arm 103. The rotating shaft in the middle section of the lower end face of the support cylinder arm 103 is rotatably sleeved in the inner flange 102. A push shaft 103a is fixedly provided on the lower end face of the support cylinder arm 103 near the turntable 101a. A set of shaft grooves 101b are arranged in a circumferential array on the surface of the turntable 101a. The length direction of the shaft grooves 101b points to the axis of the turntable 101a. The push shafts 103a at the lower end of each support cylinder arm 103 are slidably sleeved in each shaft groove 101b. An outer sleeve 2 is sleeved on the outer side of the inner support cylinder 1.

[0024] Furthermore, a wheel seat 103b is fixed at one end of the support arm 103 away from the push shaft 103a. A support wheel 103b-1 is vertically rotatably installed inside the wheel seat 103b. Rotating the support arm 103 causes the support wheel 103b-1 to fit tightly against the inner wall of the outer sleeve 2.

[0025] Furthermore, a rotating shaft 101a-1 is fixed at the center of the upper end face of the turntable 101a, and a rotating handle 101a-2 is fixed at the upper end of the rotating shaft 101a-1 to facilitate the rotation of the turntable 101a.

[0026] The operation process in this embodiment is as follows: The inner support cylinder 1 is placed on the upper end of the precast well whose height needs to be adjusted. The rotating handle 101a-2 is rotated to make the turntable 101a rotate. The shaft groove 101b of the turntable 101a pushes each support cylinder arm 103 to rotate synchronously, so that one end of the support cylinder arm 103 pushes the outer sleeve 2 to move until the cylinder axis of the outer sleeve 2 coincides with the cylinder axis of the inner support cylinder 1. Concrete is poured between the inner support cylinder 1 and the outer sleeve 2 to achieve the height adjustment of the precast well.

[0027] Example 2 Please see Figures 1 to 5 Based on Example 1, by vertically sliding sleeve seat 201 on the outside of outer sleeve 2, and circumferentially arraying a set of ball bearings 201a-2 on the lower end face of outer sleeve 2, when the support arm 103 pushes the outer sleeve 2 to move, the outer sleeve 2 drives the sleeve seat 201 to move. The ball bearings 201a-2 on the lower end face of sleeve seat 201 roll into contact with the ground to reduce friction and facilitate the movement of outer sleeve 2.

[0028] Specifically, a receiving flange 201a is fixedly provided on the lower outer wall of the sleeve seat 201.

[0029] Furthermore, a set of ball bearing seats 201a-1 is fixedly arranged in a circumferential array on the lower end face of the receiving edge 201a. A hemispherical groove is opened on the lower end face of the ball bearing seat 201a-1. A ball bearing 201a-2 is rolled in the hemispherical groove on the lower end face of the ball bearing seat 201a-1. A ball bearing sleeve 201a-3 is fixedly sleeved on the outer side of the ball bearing seat 201a-1. The lower end face of the ball bearing 201a-2 penetrates the lower end face of the ball bearing sleeve 201a-3.

[0030] Furthermore, an adapter ear 202 is fixedly provided on the upper outer wall of the outer sleeve 2, and a threaded ear 201b is fixedly provided on the upper outer wall of the sleeve seat 201. An adjusting screw 202a is rotatably sleeved inside the adapter ear 202. The adjusting screw 202a is screwed into the threaded ear 201b. When the axis of the outer sleeve 2 coincides with the axis of the inner support sleeve 1, the adjusting screw 202a is rotated to move the outer sleeve 2 downward until the lower end face of the outer sleeve 2 contacts the ground, thus completing the installation.

[0031] Furthermore, a sliding rod ear 203 is fixedly provided on the outer side wall of the upper end of the outer sleeve 2 away from the adapter ear 202, and a sliding rod sleeve ear 201c is fixedly provided on the outer side wall of the upper end face of the sleeve seat 201 away from the threaded ear 201b. A sliding rod 203a is fixedly provided on the lower end face of the sliding rod ear 203, and the sliding rod 203a is vertically slidably sleeved in the sliding rod sleeve ear 201c.

[0032] The operation process in this embodiment is as follows: Rotate turntable 101a until each support cylinder arm 103 aligns the axis of the outer sleeve 2 with the axis of the inner support cylinder 1. Rotate adjusting screw 202a to move the outer sleeve 2 downward until the lower end face of the outer sleeve 2 contacts the ground, thus completing the sleeve installation of the outer sleeve 2.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A precast well shaft height adjustment device comprising an inner bolster (1) and an outer sleeve (2), characterized in that: A turntable seat (101) is fixedly sleeved inside the inner support cylinder (1). A turntable (101a) is rotatably mounted above the turntable seat (101). An inner flange (102) is fixedly provided on the inner wall of the upper end face of the inner support cylinder (1). A set of support cylinder arms (103) is arranged in a circumferential array on the upper end face of the inner flange (102). A rotating shaft is fixedly provided in the middle section of the lower end face of the support cylinder arm (103). The rotating shaft in the middle section of the lower end face of the support cylinder arm (103) is rotatably sleeved inside the inner flange (102). The lower end face of the support arm (103) near the turntable (101a) is fixed with a push shaft (103a). A set of shaft grooves (101b) are arranged in a circumferential array on the surface of the turntable (101a). The length direction of the shaft grooves (101b) points to the axis of the turntable (101a). The push shafts (103a) at the lower end of each support arm (103) are slidably sleeved in each shaft groove (101b). The outer sleeve (2) is sleeved on the outside of the inner support sleeve (1).

2. The prefabricated wellbore height adjustment device according to claim 1, characterized in that: The end of the support arm (103) away from the push shaft (103a) is fixed with a wheel seat (103b), and a support wheel (103b-1) is vertically rotatably installed in the wheel seat (103b).

3. The prefabricated wellbore height adjustment device according to claim 2, characterized in that: A rotating shaft (101a-1) is fixed at the center of the upper end face of the turntable (101a), and a rotating handle (101a-2) is fixed at the upper end of the rotating shaft (101a-1).

4. The prefabricated wellbore height adjustment device according to claim 1, characterized in that: The outer sleeve (2) is vertically slidably sleeved with a sleeve seat (201), and the lower outer side wall of the sleeve seat (201) is fixed with a receiving flange (201a).

5. The prefabricated wellbore height adjustment device according to claim 4, characterized in that: A set of ball bearing seats (201a-1) is fixedly arranged in a circumferential array on the lower end face of the receiving edge (201a). A hemispherical groove is formed on the lower end face of the ball bearing seat (201a-1). A ball bearing (201a-2) is rolled in the hemispherical groove on the lower end face of the ball bearing seat (201a-1). A ball bearing sleeve (201a-3) is fixedly sleeved on the outside of the ball bearing seat (201a-1). The lower end face of the ball bearing (201a-2) penetrates the lower end face of the ball bearing sleeve (201a-3).

6. A precast well shaft height adjustment device according to claim 5, wherein: The outer wall of the upper end of the outer sleeve (2) is fixedly provided with an adapter ear (202), and the outer wall of the upper end face of the sleeve seat (201) is fixedly provided with a threaded ear (201b). An adjusting screw (202a) is rotatably sleeved in the adapter ear (202), and the adjusting screw (202a) is screwed into the threaded ear (201b).

7. A precast well shaft height adjustment device according to claim 6, wherein: A sliding rod lug (203) is fixedly provided on the outer side wall of the upper end of the outer sleeve (2) away from the adapter lug (202). A sliding rod sleeve lug (201c) is fixedly provided on the outer side wall of the upper end face of the sleeve seat (201) away from the threaded lug (201b). A sliding rod (203a) is fixedly provided on the lower end face of the sliding rod lug (203). The sliding rod (203a) is vertically slidably sleeved in the sliding rod sleeve lug (201c).

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