CN217179471U - Bridge pile bottom sediment thickness measuring device - Google Patents
Bridge pile bottom sediment thickness measuring device Download PDFInfo
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- CN217179471U CN217179471U CN202220497669.6U CN202220497669U CN217179471U CN 217179471 U CN217179471 U CN 217179471U CN 202220497669 U CN202220497669 U CN 202220497669U CN 217179471 U CN217179471 U CN 217179471U
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- measuring rod
- bottom sediment
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Abstract
The utility model provides a bridge pile bottom sediment thickness measurement device, including measuring line and measuring staff, the cover is equipped with the resistance dish on the body of rod of measuring staff, the measuring staff is located the center of resistance dish, the resistance dish with the measuring staff passes through non return mechanism sliding connection, the measuring staff is relative the resistance dish can only the lapse. The utility model has the advantages of high measurement accuracy, simple integral structure and low manufacturing cost.
Description
Technical Field
The utility model relates to a hole measuring tool technical field specifically is a bridge pile bottom sediment thickness measurement device.
Background
After the bridge underwater pile pouring machine forms a hole, sediment such as drilling slag, mud and the like with certain thickness can be reserved at the bottom of the pile, the sediment thickness is one of important indexes for measuring the construction quality of a pile foundation, and the sediment thickness is regulated according to the technical Specification of Highway bridge and culvert construction (JTG/T3650-2020) No. 9.2.7: "the bottom of the well deposit thickness should be no greater than the design specification; when the design is not specified, the diameter of the friction pile is smaller than or equal to 1.5m and is preferably not larger than 200mm, the diameter of the pile is larger than 1.5m or the length of the pile is larger than 40m, the diameter of the friction pile with poor soil quality is preferably not larger than 300mm, and the diameter of the support pile is preferably not larger than 50 mm.
The conventional common method for measuring the deposition thickness of the bottom of the pile is that after a pile foundation is mechanically drilled, a measuring person uses a measuring rope and a measuring hammer to measure, an operator ties an iron conical measuring hammer at the end part of the measuring rope, then slowly puts the measuring rope into a pile hole, judges that the measuring hammer reaches the top surface of the deposition according to hand feeling and construction experience, immediately stops putting the measuring rope down, and records the vertical height H between the top of a protective sleeve and the end part of the measuring hammer 1 Repeatedly lowering and raising the measuring rope by hand, sensing that the measuring hammer is inserted into the bottom of the sediment, and recording the vertical height H between the top of the protective cylinder and the end part of the measuring hammer 2 The thickness of the deposit is as follows: h Precipitation of =H 2 -H 1 The measurement result is subjectively judged mainly by the construction experience of a measurer, the position and the posture of the measuring cone cannot be confirmed in the whole measurement process, and whether the measurement is finished or not can be judged only by the experience of the measurer, so that the measured data has larger error.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a thickness measurement device deposits at bottom of bridge stake to solve the big problem of measured data error.
In order to achieve the above object, the utility model provides a bridge pile bottom sediment thickness measuring device, including measuring line and measuring staff, its characterized in that: the measuring rod is characterized in that a resistance disc is sleeved on a rod body of the measuring rod, the measuring rod is located in the center of the resistance disc, the resistance disc is in sliding connection with the measuring rod through a non-return mechanism, the measuring rod is opposite to the resistance disc and can only slide downwards, and a measuring cone is connected to the bottom of the measuring rod.
Preferably, the resistance disc comprises a connecting part and a disc body, the connecting part is located above the disc body, and the check mechanism is connected with the measuring rod through the connecting part.
Furthermore, when preventing to promote the measuring line, the measuring rod upwards resets, the vertical one row of non return hole that is equipped with on the body of rod of measuring rod, non return mechanism includes hollow bolt, spring and steel ball, the spring is located inside the hollow bolt, spring end connection the steel ball, the steel ball with non return hole cooperation.
In order to prevent the hollow bolt from loosening, a nut is arranged on the hollow bolt and used for locking the hollow bolt.
In order to ensure that the measuring rod slides downwards relative to the resistance disc and cannot rotate radially, the connecting part is provided with a clamping control bolt which is propped against the rod body of the measuring rod.
In order to accelerate the vertical falling force of the measuring rod and enable the measuring rod to be vertically inserted into the sediment, a gravity hammer is fixedly connected to the measuring rod.
In order to facilitate the binding of the measuring rope, a hanging ring is arranged at the joint of the measuring rope and the measuring rod.
In order to facilitate insertion into the sediment, the measuring rod and the measuring cone are integrally formed.
Has the advantages that: the measuring rod and the measuring cone of the utility model are always in a vertical state in the retracting and releasing processes, after the measuring rod is vertically inserted into the sediment, the resistance disc is contacted with the surface of the sediment, the measuring rod can not be deviated or inclined left and right, and the posture of the measuring rod is not interfered by the subjective consciousness or the operation manipulation of a measurer, thereby greatly improving the measuring precision; adopt the utility model discloses measure bridge pile bottom sediment thickness, easy operation, surveyor's handheld measuring rope slowly puts to the pile foundation hole bottom of awaiting measuring perpendicularly, after the resistance dish contacts with the sediment surface, repeatedly lower and raise the measuring rope with the hand, utilize the acceleration of gravity of measuring staff and gravity hammer to make measuring staff and resistance dish produce relative slip, take out measuring device after placing the bottom of sediment completely, the length that the measuring awl stretches out the resistance dish just can obtain the thickness of sediment, the measurement process is simple, measuring speed is rapid, can once accomplish the measurement, do not have too much technical requirement to the surveyor, need not judge whether the measuring position is in the position of peak or minimum; the whole structure is simple, and the manufacturing cost is low.
Drawings
FIG. 1 is a schematic structural diagram of a bridge pile bottom sediment thickness measuring device in the embodiment;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic structural view of the stop-back mechanism of fig. 1.
Reference numerals: 1. rope measurement; 2. a measuring rod; 3. a resistance disc; 4. a connecting portion; 5. a tray body; 6. a non-return hole; 7. a hollow bolt; 8. a spring; 9. steel balls; 10. a nut; 11. clamping the control bolt; 12. a gravity hammer; 13. a hoisting ring; 14. and (6) measuring the cone.
Detailed Description
The following detailed description will be made with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and the modifications made to the present invention will fall within the scope of the claims of the present invention without departing from the principles of the present invention.
Examples
As shown in fig. 1-3, a thickness measurement device deposits at bottom of bridge stake, including measuring rope 1 and measuring staff 2, measuring rope 1 must be greater than and waits to examine the stake hole degree of depth, and the winding is on special spool, measuring rope 1 is on measuring staff 2, the cover is equipped with resistance disc 3 on the body of rod of measuring staff 2, the center of resistance disc 3 reserves the through-hole, measuring staff 2 is from last down in inserting the through-hole, resistance disc 3 passes through non return mechanism sliding connection with measuring staff 2, put rope in-process measuring staff 2 relative resistance disc 3 and can only slide down fast repeatedly, slowly promote the in-process, non return mechanism prevents 2 relative resistance discs 3 of measuring staff upwards sliding.
In this embodiment, resistance disc 3 includes connecting portion 4 and disk body 5, and connecting portion 4 is located disk body 5 top, and the check mechanism passes through connecting portion 4 and connects measuring staff 2.
In this embodiment, the vertical one row of non return hole 6 that is equipped with on the body of rod on measuring staff 2 right side, non return mechanism includes hollow bolt 7, spring 8 and steel ball 9, spring 8 is located inside hollow bolt 7, spring 8 end connection steel ball 9, steel ball 9 and the cooperation of arbitrary non return hole 6, steel ball 9 is under spring 8's effect, there is certain stiction with non return hole 6, this stiction is greater than the gravity of resistance dish 3, in order to realize that measuring staff 2 and resistance dish 3 are slowly transferred and do not produce the relative slip with the promotion in-process, the cover is equipped with nut 10 on hollow bolt 7, be used for locking hollow bolt 7.
In this embodiment, the connecting portion 4 is provided with the clamp control bolt 11, and the clamp control bolt 11 abuts against the rod body on the left side of the measuring rod 2, so as to adjust the tightness between the measuring rod 2 and the resistance disc 3 and prevent the radial rotation of the measuring rod 2.
In this embodiment, the upper end of the spindle 2 is screwed to the lower end of the weight 12, and the upper end of the weight 12 is screwed to the lower end of the suspension ring 13.
In this embodiment, the bottom of the measuring rod 2 is connected with a measuring cone 14, and the measuring cone 14 is beneficial to the insertion of the measuring rod 2 into the sediment.
The principle is as follows: slowly lowering the measuring device, the measuring cone 14 is continuously and vertically close to the sediment under the combined action of the gravity hammer 12 and the measuring rod 2, the measuring rod 2 is always perpendicular to the sediment surface in the whole process, the contact area of the resistance disc 3 is large, the measuring cone is stopped on the sediment surface when contacting the sediment, the measuring rope 1 is repeatedly lowered and raised, the measuring rope 1 is slowly lifted under the action of the non-return mechanism, the static friction force between the measuring rod 2 and the gravity hammer 12 is greater than that between the steel ball 9 and the non-return hole 6, a certain vertical distance is formed between the end of the measuring cone 14 and the bottom of the resistance disc 3, the measuring rod 2 is kept still relative to the resistance disc 3, the measuring rope 1 is slowly lifted, the static friction force between the steel ball 9 and the non-return hole 6 is greater than that between the resistance disc 3, the measuring device is slowly taken out, the length of the measuring cone 14 extending out of the resistance disc 3 is directly measured, and the sediment thickness of the bottom of a pile hole is obtained.
The operation method comprises the following steps: 1. loosening the clamping bolt 11 to ensure that the measuring rod 2 can slide relative to the resistance disc 3 under the action of gravity, but the measuring rod 2 cannot rotate radially in the through hole of the resistance disc 3;
2. adjusting the measuring rod 2 to enable the cone bottom of the measuring cone 14 to be flush with the bottom of the resistance disc 3;
3. continuously adjusting the hollow bolt 7 to ensure that the steel ball 9 inside is positioned in the check hole 6, screwing the hollow bolt 7 into the connecting part 4, wherein the hollow bolt 7 cannot be screwed too tightly, otherwise, the measuring rod 2 cannot slide; the screw is not easy to be loosened too much, otherwise, the non-return function is invalid; the hollow bolt 7 is proper in tightness and can play a role of non-return, and after the test is reliable, the nut 10 is screwed and locked, and is adjusted well for standby;
4. a measuring person stands on a horizontal protective net erected at an orifice of a pile foundation to be measured, an adjusted measuring device is slowly and vertically placed to the bottom of the hole through a measuring rope 1, then the measuring rope 1 is repeatedly lowered and raised by a hand, so that a measuring cone 14 is continuously and vertically inserted into the sediment under the combined action of a gravity hammer 12 and a measuring rod 2, and finally the measuring cone 14 is ensured to reach the bottom of the sediment;
5. and slowly lifting the measuring device to the orifice by using the hand-pulling measuring rope 1, horizontally placing the measuring device, screwing the clamping control bolt 11, and measuring the length of the measuring cone 14 extending out of the resistance disc 3 by using a steel tape measure, thereby calculating the deposition thickness of the bottom of the pile hole.
Claims (7)
1. The utility model provides a bridge pile bottom sediment thickness measurement device, includes measuring line (1) and measuring staff (2), its characterized in that: the measuring rod is characterized in that a resistance disc (3) is sleeved on the rod body of the measuring rod (2), the measuring rod (2) is located at the center of the resistance disc (3), the resistance disc (3) is connected with the measuring rod (2) through a non-return mechanism in a sliding mode, the measuring rod (2) is relative to the resistance disc (3) and can only slide downwards, and a measuring cone (14) is connected to the bottom of the measuring rod (2).
2. The bridge pile bottom sediment thickness measuring device of claim 1, characterized in that: resistance dish (3) are including connecting portion (4) and disk body (5), connecting portion (4) are located disk body (5) top, non return mechanism passes through connecting portion (4) and connects measuring staff (2).
3. The bridge pile bottom sediment thickness measuring device of claim 1 or 2, characterized in that: the measuring rod is characterized in that a row of check holes (6) are vertically formed in the rod body of the measuring rod (2), the check mechanism comprises a hollow bolt (7), a spring (8) and steel balls (9), the spring (8) is located inside the hollow bolt (7), the end of the spring (8) is connected with the steel balls (9), and the steel balls (9) are matched with the check holes (6).
4. The bridge pile bottom sediment thickness measuring device of claim 3, characterized in that: and a nut (10) is arranged on the hollow bolt (7).
5. The bridge pile bottom sediment thickness measuring device of claim 2, characterized in that: the measuring rod is characterized in that a clamping control bolt (11) is arranged on the connecting portion (4), and the clamping control bolt (11) abuts against the rod body of the measuring rod (2).
6. The bridge pile bottom sediment thickness measuring device of claim 5, characterized in that: and a gravity hammer (12) is fixedly connected to the measuring rod (2).
7. The bridge pile bottom sediment thickness measuring device of claim 1, 2, 4 or 6, characterized in that: and a hanging ring (13) is arranged at the joint of the measuring rope (1) and the measuring rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220497669.6U CN217179471U (en) | 2022-03-07 | 2022-03-07 | Bridge pile bottom sediment thickness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220497669.6U CN217179471U (en) | 2022-03-07 | 2022-03-07 | Bridge pile bottom sediment thickness measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217179471U true CN217179471U (en) | 2022-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220497669.6U Active CN217179471U (en) | 2022-03-07 | 2022-03-07 | Bridge pile bottom sediment thickness measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217179471U (en) |
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2022
- 2022-03-07 CN CN202220497669.6U patent/CN217179471U/en active Active
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