Device for hanging connecting piece of leveling rod upside down

Abstract

The utility model discloses a device for upside down hanging a connecting piece of a leveling rod, which comprises a vault sinking measuring point measuring pile, a steel plate, a strong magnet and a leveling rod body, the steel plate is fixed on the surface of the vault sinking measuring point measuring pile, a connecting seat is fixed at the bottom of the strong magnet, the inner wall of the connecting seat is connected with a movable ball rod in a sliding manner, and the movable ball rod is fixed on the steel plate. A connecting rod is fixed to the bottom of the movable ball rod, a limiting structure is installed on the surface of the movable ball rod, a guide shell is fixed to the bottom of the connecting rod, a fixed base is arranged in the guide shell, an extension plate is fixed to the bottom of the fixed base, and the leveling rod body is located on the inner side of the extension plate. Two fastening bolts penetrate through the surface of the extending plate in a threaded mode, and a clamping plate is fixed to one end of each fastening bolt. According to the utility model, measurement errors caused by the fact that the hanging ruler cannot guarantee the vertical and horizontal state and the connection position is loosened can be avoided, the accuracy of monitoring data can be guaranteed, and the efficiency of monitoring work can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rice vault settlement measurement, and specifically relates to a device for a connecting piece of an inverted leveling staff. Background Technique

[0002] The measurement of the tunnel vault settlement is a process of measuring the downward displacement of the tunnel top caused by construction or natural factors. This work is an important part of the monitoring measurement during the tunnel construction process, aiming to evaluate the safety and stability of the tunnel structure. By regularly measuring the settlement of the vault, potential problems can be detected in time, and necessary measures can be taken to prevent accidents.

[0003] Currently, when measuring the tunnel vault settlement, generally a hook is fixed on the tunnel vault, and a steel tape measure is hung on the hook. After the steel tape measure is stationary, a leveling measurement is carried out in cooperation with a level. The numerical difference of the steel tape measure before and after the vault settlement is the vault settlement amount, or a hanging ring is set at the bottom of the leveling staff for measurement. Not only is the operation difficult during the process of hanging the staff, but also due to the deviation of the hanging position each time, and the connection at the hanging ring at the bottom of the leveling staff is prone to looseness, resulting in a large error in the measurement result. The accuracy of the measurement result does not meet the monitoring requirements. Moreover, the problem that neither of these two methods can solve is that after hanging, it is impossible to ensure that the steel tape measure or the leveling staff is in a vertical and horizontal state. Therefore, it is necessary to adjust the hanging direction of the staff or the direction of the level many times, which increases the workload and also increases the measurement error. Content of the Utility Model

[0004] The purpose of the utility model is to provide a device for a connecting piece of an inverted leveling staff, which can avoid measurement errors caused by the inability to ensure the vertical and horizontal state of the staff during hanging and the looseness of the connection position, and can ensure the accuracy of the monitoring data and greatly improve the efficiency of the monitoring work.

[0005] To achieve the above object, the utility model provides the following technical solution: A device for a connecting piece of an inverted leveling staff, including an arch crown settlement measuring point stake, a steel plate, a strong magnet, and a leveling staff body. The steel plate is fixed on the surface of the arch crown settlement measuring point stake. A connecting seat is fixed at the bottom of the strong magnet. An activity ball rod is slidably connected to the inner wall of the connecting seat. A connecting rod is fixed at the bottom of the activity ball rod. A limiting structure is installed on the surface of the activity ball rod. A guiding shell is fixed at the bottom of the connecting rod. A fixed base is arranged inside the guiding shell. An extension plate is fixed at the bottom of the fixed base. The leveling staff body is located inside the extension plate. Two fastening bolts are threadedly penetrated through the surface of the extension plate. A clamping plate is fixed at one end of each fastening bolt. Two first sliding grooves are formed on the surface of the guiding shell. Two second sliding grooves are formed on the inner wall of the guiding shell. A positioning shell is fixed on the surface of the fixed base. The positioning shells on the left and right sides are slidably connected to the surfaces of the first sliding grooves, and the positioning shells on the front and back sides are slidably connected to the surfaces of the second sliding grooves. An installation shell is fixedly communicated with the surface of the guiding shell. A positioning structure is arranged inside the installation shell. A pull rod is fixed at the bottom of the extension plate.

[0006] Preferably, for a device for a connecting piece of an inverted leveling staff of the utility model, the limiting structure on the surface of the activity ball rod includes a rubber pad. A limiting cover is arranged on one side of the rubber pad. The limiting cover is threadedly connected to the surface of the connecting seat. The rubber pad is sleeved on the surface of the activity ball rod.

[0007] Preferably, for a device for a connecting piece of an inverted leveling staff of the utility model, the positioning structure inside the installation shell includes a second spring. One end of the second spring is fixedly connected to the inner wall of the installation shell. The other end of the second spring is fixed with a limiting rod. A positioning hole for the limiting rod to pass through is formed on the surface of the positioning shell.

[0008] Preferably, for a device for a connecting piece of an inverted leveling staff of the utility model, first springs are fixedly arranged on the front and back sides of the inner wall of the extension plate. A positioning plate is fixed at one end of each first spring. The bottom surface of the positioning plate is designed with an inclined surface structure.

[0009] Preferably, for a device for a connecting piece of an inverted leveling staff of the utility model, a telescopic rod is arranged inside the first spring. One end of the telescopic rod is fixedly connected to the surface of the positioning plate. The other end of the telescopic rod is fixedly connected to the surface of the extension plate.

[0010] Preferably, for a device for a connecting piece of an inverted leveling staff of the utility model, a baffle is fixed at the bottom of the guiding shell.

[0011] Preferably, for a device for a connecting piece of an inverted leveling staff of the utility model, a flexible pad is fixed on the surface of the clamping plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, the strong magnet can adsorb to the steel plate on the surface of the measuring pile of the crown settlement measuring point, so that the device can be fixed on the surface of the steel plate. The positioning structure can fix the fixed base. When the leveling staff body is placed inside the fixed base, the pull rod can be pulled first, so that the fixed base drives the positioning shell to slide down along the inner walls of the first chute and the second chute, making it more convenient to put in and take out the leveling staff body. Then, the leveling staff body is placed inside the extension plate, and the fastening bolts on both sides are rotated, so that the clamping plate can clamp and fix the leveling staff body. The movable ball rod can rotate at multiple angles inside the connecting seat, and after rotation, the movable ball rod can be limited by the limiting structure, making it easier to adjust the leveling staff body to a horizontal state. Through the above design, the operation difficulty during the hanging of the ruler can be effectively avoided, as well as the measurement errors caused by the inability to ensure the vertical and horizontal states during hanging and the loosening of the connection position, making the detection accuracy of the leveling staff body better and also making the device more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic three-dimensional structure diagram of the present utility model;

[0015] Figure 2 is a schematic sectional three-dimensional structure diagram of the present utility model;

[0016] Figure 3 is a schematic partial sectional structure diagram of the present utility model;

[0017] Figure 4 is a schematic partial disassembled structure diagram of the present utility model;

[0018] Figure 5 is the present utility model Figure 2 The enlarged structure diagram of part A in.

[0019] In the figure: 1, measuring pile of crown settlement measuring point; 2, steel plate; 3, strong magnet; 4, connecting seat; 5, movable ball rod; 6, connecting rod; 7, guiding shell; 8, fixed base; 9, extension plate; 10, leveling staff body; 11, first chute; 12, second chute; 13, fastening bolt; 14, clamping plate; 15, pull rod; 16, positioning shell; 17, first spring; 18, positioning plate; 19, telescopic rod; 20, mounting shell; 21, second spring; 22, limiting rod; 23, limiting cover; 24, rubber pad; 25, flexible pad; 26, baffle. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Please refer to Figures 1-5, a device for a connecting piece of an inverted leveling staff, comprising a vault settlement measurement point stake 1, a steel plate 2, a powerful magnet 3 and a leveling staff body 10. The steel plate 2 is fixed on the surface of the vault settlement measurement point stake 1. A connecting seat 4 is fixed at the bottom of the powerful magnet 3. An activity ball rod 5 is slidably connected to the inner wall of the connecting seat 4. A connecting rod 6 is fixed at the bottom of the activity ball rod 5. A limiting structure is installed on the surface of the activity ball rod 5. A guiding shell 7 is fixed at the bottom of the connecting rod 6. A fixed base 8 is arranged inside the guiding shell 7. An extension plate 9 is fixed at the bottom of the fixed base 8. The leveling staff body 10 is located inside the extension plate 9. Two fastening bolts 13 are threadedly penetrated through the surface of the extension plate 9. A clamping plate 14 is fixed at one end of the fastening bolt 13. Two first sliding grooves 11 are opened on the surface of the guiding shell 7. Two second sliding grooves 12 are opened on the inner wall of the guiding shell 7. A positioning shell 16 is fixed on the surface of the fixed base 8. The positioning shells 16 on the left and right sides are slidably connected to the surface of the first sliding groove 11. The positioning shells 16 on the front and back sides are slidably connected to the surface of the second sliding groove 12. An installation shell 20 is fixedly communicated with the surface of the guiding shell 7. A positioning structure is arranged inside the installation shell 20. A pull rod 15 is fixed at the bottom of the extension plate 9. The guiding shell 7 is made of a transparent material;

[0021] The powerful magnet 3 can be adsorbed on the steel plate 2 on the surface of the vault settlement measurement point stake 1, so that the device can be fixed on the surface of the steel plate 2. The positioning structure can fix the fixed base 8. When the leveling staff body 10 is placed inside the fixed base 8, the pull rod 15 can be pulled first, so that the fixed base 8 drives the positioning shell 16 to slide downward on the inner walls of the first sliding groove 11 and the second sliding groove 12, so that the leveling staff body 10 can be more conveniently placed and taken out. Also, users can directly observe the level bubble situation on the surface of the internal leveling staff body 10 through the transparent guiding shell 7. Then, the leveling staff body 10 is placed inside the extension plate 9, and the two fastening bolts 13 are rotated, so that the clamping plate 14 can clamp and fix the leveling staff body 10. The activity ball rod 5 can perform multi-angle rotation operations inside the connecting seat 4, and after rotation, the activity ball rod 5 can be limited by the limiting structure, which makes the leveling staff body 10 easier to be adjusted to a horizontal state. Through the above design, the operation difficulty during the hanging of the staff can be effectively avoided, as well as the measurement errors caused by the inability to ensure the vertical and horizontal states during the hanging of the staff and the loosening of the connection position, making the detection accuracy of the leveling staff body 10 better and making the device more practical.

[0022] Further, the limiting structure on the surface of the activity ball rod 5 includes a rubber pad 24. A limiting cover 23 is arranged on one side of the rubber pad 24. The limiting cover 23 is threadedly connected to the surface of the connecting seat 4. The rubber pad 24 is sleeved on the surface of the activity ball rod 5;

[0023] When the movable cue 5 is located inside the connecting seat 4, the rubber pad 24 will be located below the surface of the movable cue 5 and inside the limit cover 23. When the operator tightens the limit cover 23, the rubber pad 24 will be compressed, thereby providing greater friction to the surface of the movable cue 5, enabling the movable cue 5 to obtain a limiting effect through friction.

[0024] Further, first springs 17 are fixed to both the front and rear sides of the inner wall of the extension plate 9. One end of each first spring 17 is fixed to a positioning plate 18, and the bottom surface of the positioning plate 18 is designed with an inclined surface structure.

[0025] When the leveling staff body 10 is placed inside the fixed base 8, the top of the leveling staff body 10 will come into contact with the inclined surfaces of the positioning plates 18 on both sides, causing the positioning plates 18 to start moving in opposite directions under the influence of their own inclined surfaces, compressing the first springs 17. Thus, after the leveling staff body 10 is placed inside the fixed base 8, the leveling staff body 10 can obtain a positioning effect, making it easier to fix the leveling staff body 10 when the fastening bolt 13 is operated subsequently.

[0026] Further, the positioning structure inside the mounting shell 20 includes a second spring 21. One end of the second spring 21 is fixedly connected to the inner wall of the mounting shell 20, and the other end of the second spring 21 is fixed to a limiting rod 22. The positioning shell 16 is provided with a positioning hole for the limiting rod 22 to pass through, and one end of the limiting rod 22 is designed with a semi-circular structure.

[0027] When the fixed base 8 moves to the top of the inner wall of the guide shell 7, the limiting rod 22 will be able to enter the positioning shell 16 through the positioning hole, enabling the fixed base 8 to obtain a limiting effect. At the same time, due to the semi-circular structure design of one end of the limiting rod 22, when the fixed base 8 is pulled downward by the operator, the contact between the positioning shell 16 and the semi-circular surface of the limiting rod 22 allows the limiting rod 22 to move towards the inside of the mounting shell 20, compressing the second spring 21, and further enabling the fixed base 8 to move downward normally.

[0028] Further, a telescopic rod 19 is arranged inside the first spring 17. One end of the telescopic rod 19 is fixedly connected to the surface of the positioning plate 18, and the other end of the telescopic rod 19 is fixedly connected to the surface of the extension plate 9.

[0029] The telescopic rod 19 can support and guide the positioning plate 18, preventing the first spring 17 from bending up and down when being compressed.

[0030] Further, a baffle 26 is fixed to the bottom of the guide shell 7.

[0031] The baffle 26 can limit the lowest position of the extension plate 9, thereby preventing the pull rod 15 from driving the extension plate 9 to take out the fixed base 8 from the guide shell 7.

[0032] Furthermore, a flexible pad 25 is fixed on the surface of the clamping plate 14;

[0033] The design of the flexible pad 25 can prevent the surface of the leveling staff body 10 from being worn and scratched when the surface of the clamping plate 14 clamps the surface of the leveling staff body 10, making the leveling staff body 10 not easily damaged.

[0034] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for a connecting piece of an inverted leveling staff, comprising a vault settlement measurement stake (1), a steel plate (2), a strong magnet (3) and a leveling staff body (10), wherein the steel plate (2) is fixed on the surface of the vault settlement measurement stake (1), and is characterized in that: A connecting seat (4) is fixed to the bottom of the powerful magnet (3). An active ball rod (5) is slidably connected to the inner wall of the connecting seat (4). A connecting rod (6) is fixed to the bottom of the active ball rod (5). A limiting structure is installed on the surface of the active ball rod (5). A guiding shell (7) is fixed to the bottom of the connecting rod (6). A fixed base (8) is arranged inside the guiding shell (7). An extension plate (9) is fixed to the bottom of the fixed base (8). The leveling staff body (10) is located inside the extension plate (9). Two fastening bolts (13) are threadedly penetrated through the surface of the extension plate (9). A clamping plate (14) is fixed to one end of the fastening bolt (13). Two first sliding grooves (11) are formed on the surface of the guiding shell (7). Two second sliding grooves (12) are formed on the inner wall of the guiding shell (7). A positioning shell (16) is fixed to the surface of the fixed base (8). The positioning shells (16) on the left and right sides are slidably connected to the surfaces of the first sliding grooves (11). The positioning shells (16) on the front and rear sides are slidably connected to the surfaces of the second sliding grooves (12). An installation shell (20) is fixedly communicated with the surface of the guiding shell (7). A positioning structure is arranged inside the installation shell (20). A pull rod (15) is fixed to the bottom of the extension plate (9).

2. The device of a connecting piece for an inverted leveling staff according to claim 1, characterized in that: The limiting structure on the surface of the active ball rod (5) includes a rubber pad (24). A limiting cover (23) is arranged on one side of the rubber pad (24). The limiting cover (23) is threadedly connected to the surface of the connecting seat (4). The rubber pad (24) is sleeved on the surface of the active ball rod (5).

3. The device of a connecting piece for an inverted leveling staff according to claim 1, characterized in that: The positioning structure inside the installation shell (20) includes a second spring (21). One end of the second spring (21) is fixedly connected to the inner wall of the installation shell (20). A limiting rod (22) is fixed to the other end of the second spring (21). A positioning hole for the limiting rod (22) to pass through is formed on the surface of the positioning shell (16).

4. The device of a connecting piece for an inverted leveling staff according to claim 1, characterized in that: First springs (17) are fixed to the front and rear sides of the inner wall of the extension plate (9). A positioning plate (18) is fixed to one end of the first spring (17). The bottom surface of the positioning plate (18) is designed with an inclined surface structure.

5. The device of a connecting piece for an inverted leveling staff according to claim 4, wherein: An expansion rod (19) is arranged inside the first spring (17). One end of the expansion rod (19) is fixedly connected to the surface of the positioning plate (18). The other end of the expansion rod (19) is fixedly connected to the surface of the extension plate (9).

6. The device of a connecting piece for an inverted leveling staff according to claim 1, characterized in that: A baffle (26) is fixed to the bottom of the guiding shell (7).

7. The device of a connecting piece for an inverted leveling staff according to claim 1, characterized in that: A flexible pad (25) is fixed to the surface of the clamping plate (14).

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