Internal mold matched with prefabricated inspection well for use

Abstract

The utility model relates to the field of construction, and discloses an internal mold matched with a prefabricated inspection well for use, which comprises a height-adjustable barrel-shaped internal mold, the barrel-shaped internal mold comprises a plurality of telescopic units, two adjacent telescopic units can slide relatively, and the barrel-shaped internal mold is provided with a limiting piece for limiting the sliding of the telescopic units. The height of the barrel-shaped inner mold can be adjusted to be the height difference between the sleeve and the foundation pit according to the condition of a construction site, the inner mold does not need to be machined on site, the construction technology is simplified, and construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of construction, in particular to a construction structure of an inspection well, and specifically to an inner mold used for a prefabricated inspection well. Background Art

[0002] With the continuous development of urban construction and various engineering projects, domestic and commercial water is basically discharged into rivers through underground sewers. In most cases, drainage pipe inspection wells are generally set up every 50 meters to 100 meters to facilitate staff to inspect and maintain underground waterways.

[0003] When constructing an inspection well, a foundation pit is usually dug at a preset point on the road, and then a prefabricated inner mold is placed in the foundation pit. Cement is poured between the inner mold and the foundation pit, and the inspection well is completed when the cement is completely dry. In order to speed up the construction of the inspection well, a sleeve of a fixed height is provided in the prior art, and the inner mold is usually formed by stacking multiple sleeves. Depending on the soil conditions in the construction area, the depth of the foundation pit at each construction site is uncertain, and the inner mold formed by stacking multiple sleeves may be lower than the foundation pit. At this time, the staff needs to process the inner mold on site according to the height difference between the inner mold and the foundation pit, which is cumbersome and affects the construction progress. Utility Model Content

[0004] In view of the defects and shortcomings of the prior art, the utility model provides an inner mold for use with a prefabricated inspection well.

[0005] An inner mold for use with a prefabricated inspection well includes a height-adjustable cylindrical inner mold, the cylindrical inner mold includes a plurality of telescopic units, two adjacent telescopic units can slide relative to each other, and the cylindrical inner mold is provided with a limiter for limiting the sliding of the telescopic units.

[0006] Preferably, the limiting member comprises a limiting screw 1, and the limiting screw 1 is threadedly connected to the telescopic unit.

[0007] Preferably, a guide structure is provided between two adjacent telescopic units, and the guide structure comprises a slide groove and a sliding block adapted to the slide groove.

[0008] Preferably, both ends of the slide groove are closed.

[0009] Preferably, it further comprises a support member for supporting the barrel portion, wherein the support member comprises two support portions, one ends of the two support portions are hinged to each other, and the two support portions are provided with fixing members for limiting the rotation of the two support portions.

[0010] The support part is fixed by a fixing piece, and the support part is placed inside the sleeve and fixed by friction. Then the cylindrical inner mold is placed on the support part. After the concrete solidifies, the cylindrical inner mold can be taken out and reused.

[0011] Preferably, the support portion is an arc-shaped plate, and the concave surfaces of the two arc-shaped plates are arranged opposite to each other.

[0012] Preferably, the fixing member comprises a telescopic rod, both ends of which are respectively connected to the two supporting parts, and the telescopic rod is provided with two limit screws for limiting the telescopic extension of the telescopic rod. The telescopic rod is provided with two limit screws for limiting the telescopic extension of the telescopic rod.

[0013] Preferably, the fixing member comprises a cylinder, a movable end of the cylinder is connected to any one of the supporting parts, and a cylinder body of the cylinder is connected to another supporting part.

[0014] Compared with the prior art, the utility model has the following obvious beneficial effects:

[0015] (1) The height of the cylindrical inner mold can be adjusted to the height difference between the sleeve and the foundation pit according to the conditions of the construction site. There is no need to process the inner mold on site, which simplifies the construction process and improves construction efficiency.

[0016] (2) By providing a support member to support the cylindrical inner mold, the stability of the inner mold is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic cross-sectional structure diagram of Embodiment 1 of the present utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part B;

[0019] Figure 3 It is a structural schematic diagram of the supporting member in Example 1 of the utility model.

[0020] Explanation of reference numerals: 1. foundation pit; 2. sleeve; 3. cylindrical inner mold; 301. outer cylinder; 302. inner cylinder; 4. guide structure; 401. slide groove; 402. slider; 5. support member; 501. support part; 502. fixing member. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, they will be described in detail below in conjunction with specific examples, but the protection scope of the present invention is not limited to the following specific embodiments.

[0022] Unless otherwise defined, all professional terms used below have the same meaning as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present utility model.

[0023] Embodiment 1:

[0024] An inner mold for use with a prefabricated inspection well includes a cylindrical inner mold 3 and a support 5 for supporting the cylindrical inner mold 3. The cylindrical inner mold 3 includes a plurality of telescopic units, and the telescopic units are arranged in a hollow cylindrical structure. Two adjacent telescopic units can slide relative to each other, and a limiter for limiting the sliding of the telescopic units is arranged on the cylindrical inner mold 3. In the embodiment of the present application, two telescopic units are arranged, and the two telescopic units are an outer cylinder 301 and an inner cylinder 302, respectively. The outer cylinder 301 is sleeved on the inner cylinder 302, and a guide structure 4 is arranged on the outer cylinder 301 and the inner cylinder 302. In actual applications, the telescopic units can be set to three or four according to needs. The more telescopic units are arranged, the larger the adjustment range of the cylindrical inner mold 3.

[0025] The guide structure 4 includes a slide groove 401 and a slider 402 adapted to the slide groove 401. Both ends of the slide groove 401 are closed. The guide structure 4 can be arranged in multiple groups along the circumferential direction of the telescopic unit. In this embodiment, the guide structure 4 is arranged in two groups. The slide groove 401 is opened on the inner wall of the outer cylinder 301 along the vertical direction. The slider 402 is fixedly connected to the outer wall of the inner cylinder 302 and is located at the end of the inner cylinder 302. The slider 402 is slidably connected in the slide groove 401. In other embodiments, the slider 402 is fixedly connected to the inner wall of the outer cylinder 301, and the slide groove 401 is opened on the outer wall of the inner cylinder 302 along the vertical direction. In actual applications, the cross section of the inspection well can be square or circular. When processing the cylindrical inner mold 3, the size and shape of the telescopic unit can also be customized according to actual needs.

[0026] The limiting member includes a limiting screw 1, which is threadedly connected to the inner cylinder 302. After adjusting the height of the cylindrical inner mold 3 to the height difference between the sleeve 2 and the foundation pit 1, the limiting screw 1 is rotated so that the limiting screw 1 abuts against the inner wall of the outer cylinder 301 and is limited by friction. Preferably, a plurality of threaded holes adapted to the limiting screw 1 are provided at intervals along the vertical direction on the inner wall of the outer cylinder 301, and the threaded holes are closed at one end away from the inner cylinder 302 to prevent cement from leaking out through the threaded holes during pouring. After adjusting the height of the cylindrical inner mold 3, the limiting screw 1 is screwed into the threaded hole to limit the relative movement of the outer cylinder 301 and the inner cylinder 302, thereby improving the stability of the cylindrical inner mold 3.

[0027] The support member 5 includes two support parts 501, one end of the two support parts 501 is hinged to each other, and the two support parts 501 are provided with a fixing member 502 for limiting the rotation of the two support parts 501. In order to increase the contact area between the support member 5 and the sleeve 2 and improve the stability of the support member 5, preferably, the support part 501 is an arc plate, and the concave surfaces of the two arc plates are arranged opposite to each other. The fixing member 502 includes a telescopic rod, the two ends of the telescopic rod are respectively fixedly connected to the two support parts 501, and the telescopic rod is provided with a limit screw 2 for limiting the telescopic extension of the telescopic rod.

[0028] At the construction site, after multiple sleeves 2 are stacked and installed in the foundation pit 1, the support member 5 is placed in the sleeve 2, and the length of the telescopic rod is adjusted, and the two support parts 501 are moved away from each other until the two support parts 501 abut against the inner wall of the sleeve 2, and then the second stop screw is tightened to fix the two support parts 501 to the inner wall of the sleeve 2 through friction. Then the cylindrical inner mold 3 is placed on the support member 5, and the height of the cylindrical inner mold 3 is adjusted so that the top of the cylindrical inner mold 3 is flush with the ground, and then the first stop screw is tightened to complete the construction of the inspection well inner mold. After pouring cement, the support member 5 is taken out and the support member 5 can be reused.

[0029] Embodiment 2:

[0030] The difference from the first embodiment is that the fixing member 502 is a cylinder, the movable end of the cylinder is fixedly connected to any one of the supporting parts 501, and the cylinder body of the cylinder is fixedly connected to the other supporting part 501. The cylinder is provided, and there is no need to manually adjust the angle between the two supporting parts 501. After the supporting member 5 is placed in the sleeve 2, the cylinder is started to drive the two supporting parts 501 to rotate until the two supporting parts 501 abut against the inner wall of the sleeve 2.

[0031] The implementation principle of the inner mold for prefabricated inspection wells of the utility model is as follows: in order to reuse the cylindrical inner mold 3, the construction method is preferably: when the cylindrical inner mold 3 is placed on the support 5, the movable end of the inner cylinder 302 is located on the support 5, and the end of the outer cylinder 301 away from the inner cylinder 302 is flush with the ground, which is convenient for subsequent demoulding. Then tighten the limit screw 1 to fix the inner cylinder 302 and the outer cylinder 301. Before pouring concrete, the outer sides of the inner cylinder 302 and the outer cylinder 301 are coated or oiled. After the concrete solidifies, the cylindrical inner mold 3 can be taken out and reused.

[0032] If the cylindrical inner mold 3 needs to be reused, preferably, the outer diameter of the outer cylinder 301 is equal to the inner diameter of the sleeve 2, and the difference between the outer diameter of the outer cylinder 301 and the outer diameter of the inner cylinder 302 is less than 0.5 cm. After the cylindrical inner mold 3 is taken out, the inner wall error between the concrete wall and the inner mold is 0±0.5 cm, which is convenient for subsequent wall processing.

[0033] The above embodiments are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope of the present invention according to the technical solution and concept of the present invention, which should be included in the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

Claims

1. An inner mold for a prefabricated inspection well, characterized in that: The invention comprises a cylindrical inner mould (3) with adjustable height, wherein the cylindrical inner mould (3) comprises a plurality of telescopic units, two adjacent telescopic units can slide relative to each other, and a limiting member for limiting the sliding of the telescopic units is arranged on the cylindrical inner mould (3).

2. The inner mold for prefabricated inspection well according to claim 1, characterized in that: The limiting member includes a limiting screw 1, and the limiting screw 1 is threadedly connected to the telescopic unit.

3. The inner mold for prefabricated inspection well as claimed in claim 2 is characterized in that: A guide structure (4) is provided between two adjacent telescopic units, and the guide structure (4) comprises a slide groove (401) and a sliding block (402) adapted to the slide groove (401).

4. The inner mold for prefabricated inspection well as claimed in claim 3 is characterized in that: Both ends of the slide groove (401) are closed.

5. The inner mold for prefabricated inspection well according to claim 1, characterized in that: It also includes a support member (5) for supporting the barrel portion, wherein the support member (5) includes two support portions (501), one end of the two support portions (501) are hinged to each other, and the two support portions (501) are provided with a fixing member (502) for limiting the rotation of the two support portions (501).

6. The inner mold for prefabricated inspection well as claimed in claim 5 is characterized in that: The support portion (501) is an arc-shaped plate, and the concave surfaces of the two arc-shaped plates are arranged opposite to each other.

7. The inner mold for prefabricated inspection well as claimed in claim 5 is characterized in that: The fixing member (502) comprises a telescopic rod, the two ends of which are respectively connected to the two supporting parts (501), and the telescopic rod is provided with two limit screws for limiting the telescopic movement of the telescopic rod.

8. The inner mold for prefabricated inspection well as claimed in claim 5 is characterized in that: The fixing member (502) comprises a cylinder, a movable end of the cylinder is connected to any one of the supporting parts (501), and a cylinder body of the cylinder is connected to another supporting part (501).

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