Layered mark bottom for monitoring land subsidence

Abstract

The utility model discloses a layering mark bottom for ground subsidence monitoring. The device consists of a mark sleeve and a mark post coaxially and movably arranged in the mark sleeve, the marker post downwards penetrates out of the marker sleeve and is provided with a marker head used for being inserted into a top plate layer; an oil seal ring is arranged at the bottom of the mark sleeve relative to the mark post; a sealing ring is arranged at the contact part of the inner wall of the small-diameter end of the conical sleeve and the marker post; the header consists of a claw-shaped header and a header seat arranged at the upper part of the claw-shaped header; a protective sleeve is sleeved outside the label sleeve, more than two windows are arranged in the protective sleeve corresponding to the conical sleeve, and a telescopic fin is arranged corresponding to each window. According to the utility model, the telescopic fins are adopted, and the fins do not extend out in the descending process, so that the well wall is not damaged.

Description

Technical Field

[0001] The utility model relates to a layered marker base for monitoring ground subsidence. Background Art

[0002] Chinese patent CN201202468Y discloses a layered marker base, which consists of a marker sleeve and a marker rod coaxially movably arranged in the marker sleeve. The marker rod passes through the marker sleeve downward and is provided with a marker head for being inserted into the top plate layer. An oil seal ring is arranged at the bottom of the marker sleeve relative to the marker rod. However, after the layered marker base of the patent is inserted into the monitoring target layer, in order to effectively monitor the compression or rebound deformation of the formation, the main marker needs to be lifted up a certain distance to reserve telescopic space for the inner marker rod, which causes a part of the inner marker rod to be exposed outside the marker base. The inner marker rod exposed outside the marker base will contact the formation over time. When monitoring the deformation of the formation, the formation around the exposed inner marker rod will generate resistance to hinder the vertical free movement of the marker rod, thereby affecting the sensitivity of the layered marker, reducing the monitoring accuracy, and even reducing the service life of the layered marker.

[0003] To solve the above problems, Chinese patent CN214793188U discloses a layered marker bottom assembly with a telescopic protective tube, in which a protective sleeve is sleeved on the outer side of the slide tube, and a wing is arranged on the outer top of the protective sleeve. The wing is used to prevent the protective sleeve from moving up with the lifting of the main marker, thereby effectively preventing the inner marker rod from being exposed in the formation and directly contacting the formation due to the lifting of the main marker or deformation of the formation, preventing the formation damping from affecting the sensitivity and accuracy of the layered marker monitoring, ensuring the monitoring accuracy of the layered marker, and extending the service life of the layered marker.

[0004] However, in this structure, the fins are arranged outside the protective tube. During the descent process of the entire assembly, the fins located outside the protective sleeve will damage the well wall and cause the mud on the well wall to fall, thereby affecting the correct arrival of the entire assembly at the predetermined position and affecting normal installation. Utility Model Content

[0005] In order to overcome the above-mentioned defects, the purpose of the utility model is to provide a new type of ground subsidence monitoring layered marker bottom.

[0006] In order to achieve the above-mentioned purpose, the utility model of the ground subsidence monitoring layered marker base is composed of a marker sleeve and a marker rod coaxially movably arranged in the marker sleeve; the marker rod passes through the marker sleeve downward and is provided with a marker head for being inserted into the top plate layer; an oil sealing ring is provided at the bottom of the marker sleeve relative to the marker rod; a conical sleeve is provided downward at the bottom of the marker sleeve, and a sealing ring is provided at the inner wall of the small diameter end of the conical sleeve and the contact part with the marker rod; the marker head is composed of a claw-shaped marker head and a marker head seat provided at the upper part of the claw-shaped marker head;

[0007] A protective sleeve is provided on the outer sleeve of the standard sleeve; and more than two windows are provided in the protective sleeve corresponding to the conical sleeve;

[0008] A retractable wing is provided corresponding to each window; the retractable wing comprises: a baffle, the bottom of which is hinged on the inner wall of the protective sleeve at the lower part of the window; the wing is provided on the baffle corresponding to the window; when the baffle is rotated to the inner wall of the protective sleeve, the free end of the wing extends out of the window;

[0009] The position of the proximal end of the wing is fixed on the side wall of the protective sleeve by a shear pin.

[0010] Furthermore, a non-return device is provided on the wing corresponding to the outer side wall of the protective sleeve. A non-return device is provided on the wing.

[0011] Furthermore, a sealing ring corresponding to the window is arranged on the baffle.

[0012] Furthermore, a sealing ring is provided between the standard sleeve and the protective sleeve.

[0013] The utility model adopts telescopic wings, which do not extend during the descent process and will not damage the well wall. After the benchmark reaches the bottom of the well, the wings can be extended under the squeezing of the conical sleeve to prevent the protective sleeve from being driven during the upward movement of the benchmark sleeve. The product has a simple overall structure, is easy to use and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0015] Figure 2 for Figure 1 Schematic diagram of the structure of the protective sleeve.

[0016] Figure 3 for Figure 1 Side view of the mid-retractable wing.

[0017] Figure 4 for Figure 3 Schematic top view of .

[0018] Figure 5 for Figure 3 sectional view of . DETAILED DESCRIPTION

[0019] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0020] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions 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 device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figures 1 to 5 As shown, the bottom of the ground subsidence monitoring layered mark of the utility model is composed of a mark sleeve 2 and a mark rod 1 coaxially movably arranged in the mark sleeve; the mark rod passes through the mark sleeve downward and is provided with a mark head 3 for being inserted in the top plate layer; an oil sealing ring is provided at the bottom of the mark sleeve relative to the mark rod; a conical sleeve 21 is provided downward at the bottom of the mark sleeve, and a sealing ring is provided at the inner wall of the small diameter end of the conical sleeve 21 that contacts the mark rod; the mark head is composed of a claw-shaped mark head 31 and a mark head seat 32 provided at the upper part of the claw-shaped mark head.

[0024] A protective sleeve 4 is provided on the standard sleeve outer shell.

[0025] The protective sleeve is provided with more than two windows corresponding to the conical sleeve.

[0026] A retractable wing 5 is provided corresponding to each window;

[0027] The telescopic wing comprises: a baffle 51, the bottom of which is hinged on the inner wall of the protective sleeve at the lower part of the window;

[0028] The wing 52 is arranged on the baffle plate corresponding to the window; when the baffle plate is rotated to be aligned with the inner wall of the protective sleeve, the free end of the wing extends out of the window.

[0029] The position of the proximal end of the wing 52 is fixed to the side wall of the protective sleeve by a shear pin 53 .

[0030] Furthermore, a non-return device 54 is provided on the wing corresponding to the outer side wall of the protective sleeve, such as Figure 5 As shown, the non-return device is a wedge-shaped L-shaped spring sheet, wherein the short arm end of the L-shaped spring sheet is arranged perpendicularly to the wing sheet to abut against the outer wall of the protective sleeve; the length of the short arm of the L-shaped spring sheet is less than the thickness of the wing sheet; the distance between the short arm of the L-shaped spring sheet and the baffle is slightly greater than the wall thickness of the protective sleeve; the long arm of the L-shaped spring sheet and the wing sheet are arranged at a slope to play an elastic role; a through hole is arranged on the wing sheet corresponding to the short arm of the L-shaped spring sheet; since the L-shaped spring sheet is a wedge-shaped structure, when the wing sheet is extended, the short arm of the L-shaped spring sheet will be pressed into the through hole without affecting the normal extension, and when the wing sheet is extended, the short arm of the L-shaped spring sheet pops out under the elastic action of the long arm; at this time, the short arm of the L-shaped spring sheet is almost parallel to the outer wall of the protective sleeve, thereby preventing the external force from pressing the extended wing sheet back into the protective sleeve, thereby playing a non-return role.

[0031] Furthermore, a sealing ring 55 corresponding to the window is provided on the baffle 51 .

[0032] A sealing ring is arranged between the standard sleeve and the protective sleeve.

[0033] When using, Figure 1 As shown, put the standard rod, standard sleeve and protective sleeve as shown in Figure 1 As shown in the figure, the telescopic fins will go down to the bottom of the well together. During this process, the telescopic fins will not extend out of the protective sleeve due to the action of the shear pins; thus, the well wall will not be damaged. After the benchmark rod descends to the predetermined formation, the external force is used to press down from the top of the benchmark sleeve, and the conical sleeve squeezes the inner side of the baffle of the telescopic fins inwardly and outwardly. When the external force exceeds the shear force of the shear pins, the fins will quickly extend out of the protective sleeve; since a non-return device is provided on the fins, the extended fins will not return after the external force is removed.

[0034] The utility model is described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the utility model. Many other changes and modifications that do not depart from the concept and scope of the utility model should be considered as the protection scope of the utility model.

[0035] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0036] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A land subsidence monitoring layered marker, characterized in that: It is composed of a standard sleeve and a standard rod coaxially arranged in the standard sleeve; the standard rod passes through the standard sleeve downward and is provided with a standard head for being inserted into the top plate layer; an oil seal ring is provided at the bottom of the standard sleeve relative to the standard rod; a conical sleeve is provided downward at the bottom of the standard sleeve, and a sealing ring is provided at the inner wall of the small diameter end of the conical sleeve and the contact part with the standard rod; the standard head is composed of a claw-shaped standard head and a standard head seat provided at the upper part of the claw-shaped standard head; A protective sleeve is provided on the outer sleeve of the standard sleeve; and more than two windows are provided in the protective sleeve corresponding to the conical sleeve; A retractable wing is provided corresponding to each window; The telescopic wing comprises: a baffle, the bottom of which is hinged on the inner wall of the protective sleeve at the lower part of the window; The wing is arranged on the baffle plate corresponding to the window; when the baffle plate rotates to the inner wall of the protective sleeve, the free end of the wing extends out of the window; The position of the proximal end of the wing is fixed on the side wall of the protective sleeve by a shear pin.

2. The ground subsidence monitoring layered marker base as claimed in claim 1, characterized in that: A non-return device is arranged on the wing.

3. The ground subsidence monitoring layered marker base as claimed in claim 1, characterized in that: A sealing ring is arranged on the baffle plate at a position corresponding to the window.

4. The ground subsidence monitoring layered marker base as claimed in claim 1, characterized in that: A sealing ring is arranged between the inner wall of the standard sleeve and the outer wall of the protective sleeve.

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