Auxiliary instrument for offshore construction measurement of cofferdam

Abstract

The utility model relates to the technical field of cofferdam construction, in particular to a measurement auxiliary instrument for cofferdam offshore construction. The device comprises a GPS measuring rod, a stabilizing support used for stabilizing the GPS measuring rod and a lifting rope with the free end fixedly connected to the support, and the fixed end of the lifting rope is fixedly connected to a winding mechanism used for winding the lifting rope. The device is simple to manufacture, can be repeatedly used, is convenient to mount, dismount and use, and has better durability; the GPS measuring rod of the device can stably stay on the upper surface of the thrown and filled stone, the GPS measuring rod is prevented from deviating from the measuring position due to underwater surge, and then the precision of measuring the riprap elevation is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cofferdam construction technical field, concretely for a kind of for cofferdam offshore construction surveying auxiliary instrument. BACKGROUND

[0002] Cofferdam adopts earth-rock gravity type cofferdam structure, and construction area is in unshielded outer sea area.Earth-rock gravity type cofferdam refers to fill a certain amount of stone in sea, and it is dense under the action of self-weight or external force.Due to the distance between measurement reference point on shore and cofferdam construction site is far, it causes the inconvenience of traditional total station surveying.At the same time, under the influence of large underwater surge in unshielded sea area, generally used point water frame point water can only provide elevation reference, and cannot obtain accurate coordinate position of cofferdam construction.In traditional cofferdam construction, due to low measurement accuracy, cofferdam stone over-throw phenomenon often occurs, causing a large amount of stone waste. UTILITY MODEL CONTENT

[0003] In order to solve the above problems of prior art, the utility model provides a kind of for cofferdam offshore construction surveying auxiliary instrument, can reduce the influence of underwater surge on GPS surveying rod, improve the accuracy of stone elevation measurement, avoid cofferdam stone over-throw phenomenon.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of for cofferdam offshore construction surveying auxiliary instrument, including GPS surveying rod, the stable support for stabilizing GPS surveying rod, the lifting rope of free end fixedly connected on stable support, the fixed end of lifting rope is fixedly connected on the winding mechanism for winding lifting rope.

[0005] Using the above structure design, GPS surveying rod can be stably stayed on the upper surface of filled stone, avoid the action of underwater surge, make GPS surveying rod deviate from measurement position, and further improve the accuracy of stone elevation measurement.

[0006] Preferably, the stable support includes support rod fixedly connected with the lifting rope, first support pipe fixedly connected with the support rod, second support pipe fixedly connected with the first support pipe, the first support pipe and the second support pipe are arranged in cross shape, the balance bar is arranged in the first support pipe and the second support pipe, the first support pipe and the second support pipe are in interference fit with the lower end of the balance bar, and a plurality of spacing rods are fixedly connected between the first support pipe and the second support pipe.

[0007] Using the above structure design, the balance bar can increase the stability of the stable support, avoid the stable support from falling down, and reduce the influence of underwater surge.

[0008] The upper end of the supporting rod is fixedly connected with a stable cylinder, the GPS measuring rod is inserted into the stable cylinder, a fastening screw is arranged on the cylinder wall of the stable cylinder through screwing, and the end of the fastening screw abuts against the GPS measuring rod.

[0009] The structure design can fix different models of GPS measuring rods, and the GPS measuring rod can be conveniently replaced when damaged.

[0010] Preferably, the winding mechanism comprises a wire reel fixedly connected with the fixed end of the lifting rope, a central shaft arranged in the center of the wire reel, a protective shell used for wrapping the wire reel, and a lock buckle fixedly connected with the protective shell, the central shaft is fixedly connected with the inner side wall of the protective shell, a rotating handle is fixedly connected with the wire reel, and an annular slot hole matching the movement track of the rotating handle is arranged on the protective shell.

[0011] The structure design can suspend the device on a crane, and adjust the length of the lifting rope according to different measuring positions.

[0012] Preferably, a positioning cylinder is fixedly connected with the protective shell, a positioning screw is arranged on the positioning cylinder through screwing, and a positioning hole matching the positioning screw is arranged on the wire reel.

[0013] The structure design can fix the wire reel, avoid the wire reel from rotating at will, make the lifting rope separate from the wire reel, fix the wire reel after the lifting rope is pulled out from the wire reel, and maintain the length of the lifting rope.

[0014] Compared with the prior art, the device has the advantages that:

[0015] 1) The device is simple to manufacture, can be repeatedly used, convenient to install, disassemble and use, and has good durability.

[0016] 2) The GPS measuring rod of the device can be stably positioned on the upper surface of the thrown stone filling material, avoids that the GPS measuring rod deviates from the measuring position due to underwater surges, and further improves the accuracy of the stone filling height measurement. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the device;

[0018] Figure 2 It is a structural schematic view of the stable support from the top;

[0019] Figure 3 It is a structural schematic view of the winding mechanism from the left side;

[0020] Figure 4 It is a structural schematic view of the device Figure 1 enlarged at A. DETAILED DESCRIPTION

[0021] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The utility model provides a technical scheme: a kind of cofferdam offshore construction surveying auxiliary instrument, including GPS surveying rod 2, the stable support 1 for stabilizing GPS surveying rod, hoisting rope 3 is fixedly connected on the free end of stable support 1, the fixed end of hoisting rope 3 is fixedly connected on the winding mechanism for winding hoisting rope 3.

[0022] The stable support 1 includes support rod 12 fixedly connected with hoisting rope 3, first support pipe 101 fixedly connected with support rod 12, second support pipe 102 fixedly connected on first support pipe 101, first support pipe 101 and second support pipe 102 are square tubes, the first support pipe 101 and second support pipe 102 are arranged in cross shape, first support pipe 101 and second support pipe 102 are in the same plane, balance bar 103 is arranged in the inside of first support pipe 101 and second support pipe 102, in order to increase the counterweight of stable support 1, balance bar 103 is solid steel pole, the lower end of first support pipe 101 and second support pipe 102 are interference fit with balance bar 103, a plurality of spacer bars 104 are fixedly connected between first support pipe 101 and second support pipe 102, as shown in Fig. Figure 2 Five spacer bars 104 are arranged between the four included angles of first support pipe 101 and second support pipe 102, there is a large gap between adjacent spacer bars 104, when the device sinks in sea, water flow can pass through the gap between adjacent spacer bars 104, to avoid water flow moving with the device, and further avoid the device deviating from measuring point when sinking.

[0023] The upper end of support rod 12 is fixedly connected with stable cylinder 4, the GPS surveying rod 2 is inserted into stable cylinder 4, fastening screw rod 41 is arranged on the cylinder wall of stable cylinder 4 through thread, and the end of fastening screw rod 41 abuts against the GPS surveying rod 2.

[0024] The winding mechanism includes wire reel 51 fixedly connected with the fixed end of hoisting rope 3, center shaft 52 arranged in the center of wire reel 51, protective shell 53 for wrapping wire reel 51, lock catch 54 fixedly connected on protective shell 53, the center shaft 52 is fixedly connected on the inner side wall of protective shell 53, rotating handle 55 is fixedly connected on wire reel 51, and annular slot hole 56 matching the movement track of rotating handle 55 is formed in protective shell 53. Staff can wind hoisting rope 3 by rotating rotating handle 55.

[0025] The protection shell 53 is fixedly connected with a positioning cylinder 57, a positioning screw 58 is arranged on the positioning cylinder 57 through screwing, and a positioning hole matched with the positioning screw 58 is arranged on the wire reel 51. Figure 1 A triangular indicating mark is arranged on the outer wall of the protection shell 53, and red paint is coated on the indicating mark; when the handle 55 is aligned with the indicating mark, the positioning screw 58 can be smoothly inserted into the positioning hole, and the triangular indicating mark can help the worker to smoothly insert the positioning screw 58 into the positioning hole.

[0026] Working principle: the worker reversely rotates the positioning screw 58 to pull out the lifting rope 3, draws out the lifting rope 3 to a proper length, then rotates the positioning screw 58 to insert the positioning screw 58 into the positioning hole to fix the wire reel 51, avoids that the lifting rope 3 is too long to affect use, then connects the lock catch 54 to the lifting belt of the riprapping excavator, lifts the device by the riprapping excavator, then lowers the arm of the riprapping excavator, and makes the device below reach the measuring point under the sea by the riprapping excavator, so that the bottom of the stable support 1 touches the riprapping material, after the GPS measuring rod 2 is stable, the data on the hand book is read and recorded. The measuring point is measured along the drawing introduced in the hand book, and the measuring point is measured for multiple times, after the measuring point is measured, the worker rotates the handle 55 to recover the lifting rope 3, and finally recovers the device.

[0027] The structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and do not have technical substantial significance, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose that can be produced by the utility model, should still fall within the range covered by the disclosed technical content. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the range of the utility model, the change or adjustment of relative relationship, without substantially changing the technical content, is also regarded as the implementation range of the utility model.

[0028] The utility model has been described above with reference to the preferred embodiments, but the protection scope of the utility model is not limited thereto, and all technical solutions falling within the scope of claims are within the protection scope of the utility model. Various improvements can be made to the utility model and equivalent components can be replaced without departing from the scope of the utility model. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way.

Claims

1. An auxiliary surveying instrument for offshore cofferdam construction, characterized in that: It includes a GPS measuring rod (2), a sturdy bracket (1) for stabilizing the GPS measuring rod, and a suspension rope (3) with its free end fixedly connected to the sturdy bracket (1). The fixed end of the suspension rope (3) is fixedly connected to a winding mechanism for winding the suspension rope (3).

2. The auxiliary surveying instrument for offshore cofferdam construction according to claim 1, characterized in that: The stable support (1) includes a support rod (12) fixedly connected to the suspension rope (3), a first support tube (101) fixedly connected to the support rod (12), and a second support tube (102) fixedly connected to the first support tube (101). The first support tube (101) and the second support tube (102) are arranged in a cross shape. A balance rod (103) is installed inside both the first support tube (101) and the second support tube (102). The first support tube (101) and the second support tube (102) are both interference-fitted with the lower end of the balance rod (103). Multiple spacer rods (104) are fixedly connected between the first support tube (101) and the second support tube (102).

3. The auxiliary surveying instrument for offshore cofferdam construction according to claim 2, characterized in that: The upper end of the support rod (12) is fixedly connected to the stabilizing cylinder (4), the GPS measuring rod (2) is inserted into the stabilizing cylinder (4), and a fastening screw (41) is threaded through the cylinder wall of the stabilizing cylinder (4), the end of the fastening screw (41) abuts against the GPS measuring rod (2).

4. A surveying auxiliary device for offshore cofferdam construction according to any one of claims 1 to 3, characterized in that: The winding mechanism includes a spool (51) fixedly connected to the fixed end of the hanging rope (3), a central shaft (52) passing through the center of the spool (51), a protective shell (53) for wrapping the spool (51), and a lock (54) fixedly connected to the protective shell (53). The central shaft (52) is fixedly connected to the inner wall of the protective shell (53). A rotating handle (55) is fixedly connected to the spool (51). An annular slot (56) matching the movement trajectory of the rotating handle (55) is opened on the protective shell (53).

5. The auxiliary surveying instrument for offshore cofferdam construction according to claim 4, characterized in that: The protective shell (53) is fixedly connected to the positioning cylinder (57), and the positioning cylinder (57) is threaded through the positioning screw (58). The spool (51) has a positioning hole that matches the positioning screw (58).

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