Measuring tool for measuring distance between expanded head section and hole top in anchor rod pile hole

Abstract

The utility model discloses a measuring tool for measuring the distance between an expanded head section and a hole top in an anchor rod pile hole, belongs to the technical field of measuring devices, and aims to solve the problems that an existing tool for measuring the position of the expanded head section in the anchor rod pile hole is large in size and not beneficial to measurement operation and storage. The device comprises a supporting plate, an outer sleeve, a measuring telescopic pipe, a driving rope and a bottom end measuring unit, the outer sleeve is inserted into the supporting plate in the vertical direction, the measuring telescopic pipe is inserted into the outer sleeve in the vertical direction, and the uppermost pipe section in the measuring telescopic pipe is rotationally connected with the outer sleeve through a plurality of rotating bearings; the bottom end measuring unit is located at the bottom end of the lowermost pipe section of the measuring telescopic pipe, the driving rope is arranged in the measuring telescopic pipe, the driving rope drives the measuring telescopic pipe to retract by pulling the bottom end measuring unit, and a foldable measuring part is arranged in the bottom end measuring unit. The measuring tool is mainly used for measuring the distance between the expanded head section and the hole top in the anchor rod pile hole.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of measuring device, concretely relates to a measuring tool for measuring the distance between the enlarged head section and the hole top in anchor rod hole. BACKGROUND

[0002] The anchor rod pile is first determined the position of the enlarged head section in the target anchor rod hole and the accurate distance between the anchor rod hole and the hole top during construction, the existing measuring tool generally utilizes the L-shaped scale welded by the steel pipe, the horizontal part of the L-shaped scale is lowered to the anchor rod hole enough depth, the vertical part of the L-shaped scale is close to the hole wall, the horizontal part of the L-shaped scale is used as the measuring constraint part, the movement trend of the horizontal part of the L-shaped scale is hindered until the step between the enlarged head section in the anchor rod hole and the ordinary hole section in the anchor rod hole, then the horizontal part of the L-shaped scale has entered the measuring position, the distance between the enlarged head section and the anchor rod hole top is determined by reading the reading on the vertical part of the L-shaped scale, the measuring tool has the disadvantages that the measuring tool length is too long, the distance between the enlarged head section and the anchor rod hole top is 3 to 5 meters under normal circumstances, if accurate measurement is wanted, the length of the L-shaped scale should be at least 5.5 to 6 meters, the scale of such length is very difficult to use, generally needs the hoisting device to assist measurement, and the scale is very difficult to transport and store, the long scale structure can only be transported by the truck, and the storage space is also occupied, therefore, it is very practical to develop a measuring tool which is easy to operate and store to measure the position of the enlarged head section in the anchor rod hole. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses to solve the problem that the tool for measuring the position of the enlarged head section in the anchor rod hole is too large, is not conducive to measurement operation and storage, and further provides a measuring tool for measuring the distance between the enlarged head section and the hole top in the anchor rod hole.

[0004] The utility model provides a kind of measuring tool for measuring the spacing between enlarged head section and hole top in anchor rod pile hole, measuring tool includes support plate, outer sleeve, measuring telescopic pipe, drive rope and bottom end measuring unit, outer sleeve is inserted on support plate along vertical direction, and the bottom end of outer sleeve extends to the below of support plate, the outer wall of outer sleeve is fixedly connected with support plate, measuring telescopic pipe is inserted in outer sleeve along vertical direction, and the both ends of the uppermost pipe section in measuring telescopic pipe are extended to the outside of outer sleeve, the uppermost pipe section in measuring telescopic pipe is rotatably connected with outer sleeve by multiple rotating bearings, bottom end measuring unit is located at the bottom end of the lowermost pipe section of measuring telescopic pipe, and bottom end measuring unit is fixedly connected with the lowermost pipe section in measuring telescopic pipe, drive rope is arranged in measuring telescopic pipe, and one end of drive rope is installed at the top of bottom end measuring unit, the other end of drive rope extends out the top of measuring telescopic pipe and is arranged outside measuring telescopic pipe, scale mark is provided on the outer surface of drive rope along the length extension direction of drive rope, and the 0 point scale of drive rope is located at the fixed end with bottom end measuring unit, drive rope is driven measuring telescopic pipe to realize contraction action by pulling bottom end measuring unit, folding measuring part is provided in bottom end measuring unit, and measuring part is used for limiting the step between enlarged head section and ordinary hole section in anchor rod pile hole;

[0005] Further, the bottom of the support plate is provided with an arc-shaped limiting stopper matched with the inner hole surface of the anchor rod pile hole;

[0006] Further, the bottom end measuring unit includes a vertical rod, a hinged seat, a folding rod and a limiting plate, the top end of the vertical rod is provided with a limiting disc, the end surface diameter of the limiting disc is the same as that of the uppermost pipe section in the measuring telescopic pipe, the end surface diameter of the uppermost pipe section in the measuring telescopic pipe gradually decreases to that of the lowermost pipe section, the vertical rod is fixedly connected with the lowermost pipe section in the measuring telescopic pipe through the limiting disc, the hinged seat is arranged on one side of the bottom end of the vertical rod and fixedly connected with the vertical rod, the folding rod is arranged in the hinged seat and dampingly hinged with the hinged seat, the limiting plate is horizontally arranged below the hinged seat and fixedly connected with the vertical rod at one end, and the limiting plate is used for limiting the maximum folding angle of the folding rod, and the folding angle of the folding rod ranges from 0° to 90°;

[0007] Further, the measuring tool further includes a top guide wheel unit, the top guide wheel unit is fixed on the outer wall of the outer sleeve, and the top guide wheel unit is used for guiding the drive rope;

[0008] Further, the top guide wheel unit includes a first horizontal support arm and a guide wheel, the first horizontal support arm is arranged on one side of the outer sleeve, one end of the first horizontal support arm is fixedly connected with the outer sleeve, the guide wheel is inserted on the side wall of the other end of the first horizontal support arm, and the guide wheel and the outer sleeve are located on the same side of the first horizontal support arm, and the axis of the guide wheel is perpendicular to the first horizontal support arm;

[0009] The guide wheel comprises a first central shaft, a first rotating bearing and a guide wheel body, the first central shaft is inserted into the side wall of the other end of the first horizontal support arm, and the axis of the first central shaft is arranged perpendicularly to the first horizontal support arm, the guide wheel body is sleeved on the first central shaft and is rotationally connected with the first central shaft through the first rotating bearing;

[0010] Further, the measuring tool further comprises a winding reel unit, the winding reel unit is fixed on the outer wall of the outer sleeve, and the winding reel unit is used for collecting the driving rope;

[0011] Further, the winding reel unit comprises a second horizontal support arm and a winding reel, the second horizontal support arm is arranged on one side of the outer sleeve, and one end of the second horizontal support arm is fixedly connected with the outer sleeve, the winding reel is inserted into the side wall of the other end of the second horizontal support arm, and the second horizontal support arm and the outer sleeve are located on the same side of the second horizontal support arm, and the axis of the winding reel is arranged perpendicularly to the second horizontal support arm;

[0012] The winding reel comprises a second central shaft, a second rotating bearing, a reel and a rotating handle, the second central shaft is inserted into the side wall of the other end of the second horizontal support arm, and the axis of the second central shaft is arranged perpendicularly to the second horizontal support arm, the reel is sleeved on the second central shaft and is rotationally connected with the second central shaft through the second rotating bearing, and the rotating handle is horizontally arranged on the side of the reel away from the second horizontal support arm, and one end of the rotating handle is fixedly connected with the reel;

[0013] Further, the end of the rotating handle away from the reel is fixedly connected with a rope ring, a locking rope is arranged on the rope ring, one end of the locking rope is wound on the rope ring, and the other end of the locking rope is hung on the positioning hook outside the outer sleeve;

[0014] Further, the measuring tool further comprises a measuring telescopic pipe rotating driving unit, the measuring telescopic pipe rotating driving unit is installed on the top of the support plate, the driving end of the measuring telescopic pipe rotating driving unit is arranged towards the outer sleeve, a half-ring groove is processed on the corresponding position of the outer sleeve and the measuring telescopic pipe rotating driving unit, a driven part is sleeved on the corresponding position of the half-ring groove and the uppermost pipe segment of the measuring telescopic pipe, and the measuring telescopic pipe rotating driving unit drives the driven part to drive the measuring telescopic pipe to rotate;

[0015] Further, the measurement telescopic pipe rotation driving unit comprises a rack fixing seat, a rack, a U-shaped connecting piece, an electric push rod and a push rod fixing seat. The electric push rod is detachably mounted on the top of the support plate through the push rod fixing seat. The rack is located between the electric push rod and the outer sleeve pipe, and the length extension direction of the rack is parallel to the axis extension direction of the electric push rod. The rack is detachably connected to the top of the support plate through the rack fixing seat. One end of the rack is connected to the piston rod end of the electric push rod through the U-shaped connecting piece. The tooth-shaped part of the rack is arranged in correspondence with the half-ring groove on the outer sleeve pipe. The uppermost pipe section of the measurement telescopic pipe is sleeved with a tooth ring corresponding to the rack at the corresponding position of the half-ring groove. The rack drives the tooth ring to rotate, thereby driving the measurement telescopic pipe to rotate synchronously.

[0016] The present application has the following beneficial effects over the prior art:

[0017] The measurement tool for measuring the distance between the enlarged head section and the hole top of the anchor rod pile hole provided by the present application adopts a telescopic ruler body design, which greatly reduces the difficulty of storage and storage. Moreover, the measurement tool provided by the present application uses a pull rope as the main driving component, and does not need to use a lifting device to pull the measuring tool. Instead, the position of the measuring part of the measuring tool can be adjusted by pulling the driving rope with human power, which greatly simplifies the tools required in the measurement process, reduces the difficulty of measurement, and also reduces the measurement cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view schematic diagram of the measurement tool (without installing the winding reel unit and the measurement telescopic pipe rotation driving unit);

[0019] Figure 2 It is a front view schematic diagram of the measurement tool (when the measurement telescopic pipe is in an extended state);

[0020] Figure 3 It is a front view schematic diagram of the measurement tool (when the folding rod is in an open state);

[0021] Figure 4 It is a front view schematic diagram of the measurement tool (when the measurement telescopic pipe is in a rotating state);

[0022] Figure 5 It is a schematic diagram of the measurement tool when it is lowered to the target anchor rod pile hole;

[0023] Figure 6 It is a schematic diagram of the measurement tool when it is performing measurement work;

[0024] Figure 7 It is a bottom view schematic diagram of the support plate of the measurement tool;

[0025] Figure 8This is a top view of the support plate in the measuring tool described in this application;

[0026] Figure 9 This is a front view schematic diagram of the measuring tool described in this application (when the measuring telescopic tube rotation drive unit is installed);

[0027] Figure 10 This is a schematic diagram of the structure of the telescopic tube rotation drive unit in the measuring tool described in this application;

[0028] Figure 11 This is a front view schematic diagram of the measuring tool described in this application (when the winding coil unit and the measuring telescopic tube rotation drive unit are installed);

[0029] Figure 12 This is a side view of the guide wheel in the measuring tool described in this application;

[0030] Figure 13 This is a front view schematic diagram of the guide wheel in the measuring tool described in this application;

[0031] Figure 14 This is a side view of the winding spool in the measuring tool described in this application;

[0032] Figure 15 This is a front view schematic diagram of the winding spool in the measuring tool described in this application;

[0033] Figure 16 This is a diagram of the limiting structure between two adjacent pipe segments in the measuring tool described in this application.

[0034] Figure 17 This is a schematic diagram of the structure in the measuring tool described in this application, showing the connection between the drive rope and the top of the vertical rod. Detailed Implementation

[0035] Specific implementation method one: Combining Figures 1 to 7 and Figure 16The embodiment is illustrated. In the embodiment, a measuring tool for measuring the distance between the enlarged head section and the hole top in the anchor rod hole is provided. The measuring tool comprises a support plate 1, an outer sleeve 2, a measuring telescopic pipe 3, a driving rope 10 and a bottom end measuring unit. The outer sleeve 2 is inserted in the vertical direction on the support plate 1, and the bottom end of the outer sleeve 2 extends below the support plate 1. The outer wall of the outer sleeve 2 is fixedly connected with the support plate 1. The measuring telescopic pipe 3 is inserted in the vertical direction in the outer sleeve 2, and both ends of the uppermost pipe section in the measuring telescopic pipe 3 extend to the outside of the outer sleeve 2. The uppermost pipe section in the measuring telescopic pipe 3 is rotationally connected with the outer sleeve 2 through a plurality of rotating bearings. The bottom end measuring unit is located at the bottom end of the lowermost pipe section in the measuring telescopic pipe 3, and is fixedly connected with the lowermost pipe section in the measuring telescopic pipe 3. The driving rope 10 is arranged in the measuring telescopic pipe 3, one end of the driving rope 10 is mounted on the top of the bottom end measuring unit, the other end of the driving rope 10 extends out of the top of the measuring telescopic pipe 3 and is arranged outside the measuring telescopic pipe 3. A scale mark is arranged on the outer surface of the driving rope 10 along the length extension direction of the driving rope 10, and the 0 point scale of the driving rope 10 is located at the fixed end of the bottom end measuring unit. The driving rope 10 drives the measuring telescopic pipe 3 to realize the contraction action by pulling the bottom end measuring unit. The bottom end measuring unit is provided with a measuring part capable of being folded, and the measuring part is used for limiting the step between the enlarged head section and the common hole section in the anchor rod hole.

[0036] An arc-shaped limiting stopper 1-1 is arranged at the bottom of the support plate 1 and cooperates with the hole surface in the anchor rod hole.

[0037] The bottom end measuring unit comprises a vertical rod 4, a hinged seat 5, a folding rod 6 and a limiting plate 7. The top end of the vertical rod 4 is provided with a limiting disc, the end face diameter of the limiting disc is the same as the end face diameter of the uppermost pipe section in the measuring telescopic pipe 3. The end face diameter of the uppermost pipe section in the measuring telescopic pipe 3 gradually decreases to the end face diameter of the lowermost pipe section. The vertical rod 4 is fixedly connected with the lowermost pipe section in the measuring telescopic pipe 3 through the limiting disc. The hinged seat 5 is arranged on one side of the bottom end of the vertical rod 4 and is fixedly connected with the vertical rod 4. The folding rod 6 is arranged in the hinged seat 5 and is dampingly hinged with the hinged seat 5. The limiting plate 7 is horizontally arranged below the hinged seat 5 and is fixedly connected with the vertical rod 4 at one end. The limiting plate 7 is used for limiting the maximum folding angle of the folding rod 6. The folding angle of the folding rod 6 ranges from 0° to 90°.

[0038] The embodiment provides a measuring tool for measuring the distance between the enlarged head section and the hole top in the anchor rod hole, which adopts a telescopic ruler body structure design for the first time, can flexibly adjust the overall length of the ruler, compared with the traditional integrated structure of the ruler design, the measuring tool provided by the application can compress the multi-stage length of the measuring telescopic pipe 3 to the length of a single pipe section when idle, so that the length of the measuring tool is shortened to 1 / 4 to 1 / 5 of the extension length, which greatly improves the convenience of transportation and storage, and the overall length of the measuring telescopic pipe 3 does not need to be raised during measurement, only the respective pipe sections in the measuring telescopic pipe 3 need to be pulled up step by step through the driving rope 10, so that the overall length of the measuring telescopic pipe 3 is shortened to the step between the folding rod 6 and the enlarged head section and the common hole section in the anchor rod hole, and the measurement purpose is achieved when the folding rod 6 contacts the step, at this time, the degree of the scale on the driving rope 10 is measured by the construction personnel, and the obtained degree is subtracted from the distance between the top of the measuring telescopic pipe 3 and the hole top of the anchor rod hole, and the distance from the hinge seat 5 to the top end of the vertical rod 4 is added, the top position of the measuring tool remains unchanged during the whole process, and only the distance between the horizontally arranged folding rod 6 and the top of the measuring tool changes, the end face diameter of the limiting disc is the same as the end face diameter of the uppermost pipe section in the measuring telescopic pipe 3, so that the limiting disc plays a limiting role on each pipe section in the measuring telescopic pipe 3, and ensures that the measuring telescopic pipe 3 can be recovered step by step to the uppermost pipe section under the constraint of the limiting disc as the driving rope 10 is pulled, the folding rod 6 and the vertical rod 4 adopt a folding design, and the folding rod 6 can be close to the vertical rod 4 when the folding rod 6 is not working, on the one hand, the bottom measuring unit after folding can reduce the occupied space, and on the other hand, the use safety of the measuring tool can be improved, and the folding rod 6 in the horizontal state is prevented from accidentally hurting people during transportation and storage;

[0039] It is worth noting that the top of the vertical rod 4 top limiting disc is provided with a buckle cover 4-1, the edge of the buckle cover 4-1 is connected with the limiting disc through bolts, a cavity structure is formed between the buckle cover main body and the limiting disc, the bottom end of the driving rope 10 extends into the buckle cover 4-1 through the through hole at the top of the buckle cover main body, and the bottom end of the driving rope 10 is sleeved with a limiting sleeve 101, the end face diameter of the limiting sleeve 101 is greater than the hole diameter of the top through hole of the buckle cover 4-1, so as to ensure that the bottom end of the driving rope 10 does not separate from the limiting disc, and the buckle cover 4-1 only plays a circumferential limiting role on the limiting sleeve, and does not idle the rotation freedom of the driving rope 10 and the limiting sleeve 101, so that even if the working angle of the measuring telescopic pipe 3 is rotated, the driving rope 10 can also be in the most appropriate pulling direction, so that the measuring personnel can achieve the purpose of recovering each pipe section of the measuring telescopic pipe 3 by pulling the driving rope 10;

[0040] The support plate 1 in the embodiment mainly plays a supporting and limiting role. In use, the counterweight disc can be detached and connected on the support plate 1, so as to balance the weight of the sleeve pipe 2 and the measuring telescopic pipe 3, avoid the measurement tool from falling to one side in use, and thus affect the stability of the measurement tool. The rotation design between the sleeve pipe 2 and the measuring telescopic pipe 3 is convenient for the measurement device to realize the lowering action. In the lowering process, the folding rod 6 is in a horizontal state. However, through the rotation of the measuring telescopic pipe 3, the measuring telescopic pipe 3 is turned away from the side of the anchor rod pile hole wall. When the folding rod 6 is lowered to the limit position, the folding rod 6 is turned to the side of the hole wall, so as to realize the subsequent measurement work. The measuring telescopic pipe 3 is generally 4-5 levels according to the measurement length, and the length of each level is 1-1.1 m. The length of the vertical rod 4 is 20-40 cm, and the length of the folding rod 6 is 15-20 cm.

[0041] Specific implementation method two: in combination with Figures 1 to 7 and Figure 16 The embodiment is described. The embodiment is different from the specific implementation method one in that the measurement tool further comprises a top guide wheel unit. The top guide wheel unit is fixed on the outer wall of the sleeve pipe 2. The top guide wheel unit is used for guiding the driving rope 10.

[0042] The top guide wheel unit comprises a first horizontal support arm 8 and a guide wheel 9. The first horizontal support arm 8 is arranged on one side of the sleeve pipe 2, and one end of the first horizontal support arm 8 is fixedly connected with the sleeve pipe 2. The guide wheel 9 is inserted into the side wall of the other end of the first horizontal support arm 8, and the guide wheel 9 and the sleeve pipe 2 are located on the same side of the first horizontal support arm 8. The axis of the guide wheel 9 is perpendicular to the first horizontal support arm 8.

[0043] The guide wheel 9 comprises a first central shaft 9-1, a first rotating bearing 9-2 and a guide wheel main body 9-3. The first central shaft 9-1 is inserted into the side wall of the other end of the first horizontal support arm 8, and the axis of the first central shaft 9-1 is perpendicular to the first horizontal support arm 8. The guide wheel main body 9-3 is sleeved on the first central shaft 9-1 and is rotationally connected with the first central shaft 9-1 through the first rotating bearing 9-2. The other components and connection modes are the same as those of the specific implementation method one.

[0044] In the embodiment, the top guide wheel unit is arranged to make the driving rope 10 more convenient and smooth in pulling. Compared with the sliding and rubbing of the driving rope 10 and the top end wall of the measuring telescopic pipe 3, on the one hand, the pulling jam is prone to occur, which affects the smoothness of the measurement work. On the other hand, the wear degree of the driving rope 10 is increased, and the service life of the driving rope 10 is reduced. A guide ring groove matched with the driving rope 10 is processed on the outer circular wall of the guide wheel main body 9-3, so as to constrain the pulling direction of the driving rope 10 and ensure the accuracy of the pulling direction of the driving rope 10.

[0045] Specific implementation method three: in combination with Figures 1 to 10And Figure 16 The difference between the embodiment and the second embodiment is that the measuring tool further comprises a measuring telescopic pipe rotation driving unit 1-2, the measuring telescopic pipe rotation driving unit 1-2 is installed on the top of the support plate 1, the driving end of the measuring telescopic pipe rotation driving unit 1-2 is arranged towards the outer sleeve 2, the outer sleeve 2 is processed with a half-ring groove at the corresponding position of the measuring telescopic pipe rotation driving unit, the uppermost pipe segment of the measuring telescopic pipe 3 is sleeved with a driven part at the corresponding position of the half-ring groove, and the measuring telescopic pipe rotation driving unit 1-2 drives the driven part to drive the measuring telescopic pipe 3 to rotate.

[0046] The measuring telescopic pipe rotation driving unit comprises a rack fixing seat 1-21, a rack 1-22, a U-shaped connecting piece 1-23, an electric push rod 1-24 and a push rod fixing seat 1-25, the electric push rod 1-24 is detachably installed on the top of the support plate 1 through the push rod fixing seat 1-25, the rack 1-22 is located between the electric push rod 1-24 and the outer sleeve 2, and the length extension direction of the rack 1-22 is arranged in parallel with the axis extension direction of the electric push rod 1-24, the rack 1-22 is detachably connected on the top of the support plate 1 through the rack fixing seat 1-21, one end of the rack 1-22 is connected with the piston rod end of the electric push rod 1-24 through the U-shaped connecting piece 1-23, the tooth-shaped part of the rack 1-22 is arranged corresponding to the half-ring groove on the outer sleeve 2, the uppermost pipe segment of the measuring telescopic pipe 3 is sleeved with a gear ring matched with the rack 1-22 at the corresponding position of the half-ring groove, and the rack 1-22 drives the gear ring to rotate and in turn drives the measuring telescopic pipe 3 to rotate synchronously. The other components and connection modes are the same as those of the second embodiment.

[0047] In the embodiment, considering that it may be inconvenient to manually rotate the measuring telescopic pipe 3, the measuring telescopic pipe rotation driving unit 1-2 is added, which is used to drive the measuring telescopic pipe 3 to rotate circumferentially. The measuring telescopic pipe rotation driving unit 1-2 provided in the embodiment takes the electric push rod 1-24 of the push rod motor as a power source, drives the rack 1-22 to reciprocate, drives the gear ring of the measuring telescopic pipe 3 to rotate through the rack 1-22, and in turn drives the measuring telescopic pipe 3 to rotate. The rotation of the measuring telescopic pipe 3 is designed to ensure that the measuring part of the measuring tool can be smoothly lowered into the anchor rod pile hole, so the rotation range does not need to be too large, and it needs to meet the rotation angle of 0 to 180°. In order to enable the measurer to know the rotation position of the measuring telescopic pipe 3, the part of the uppermost pipe segment of the measuring telescopic pipe 3 extending to the outer sleeve 2 can be marked. The marked position corresponds to the upper and lower positions of the folding rod 6. In this way, the measurer can determine the position of the folding rod 6 through the mark of the measuring telescopic pipe 3, so as to facilitate subsequent measurement work.

[0048] The fourth embodiment is combined with the first embodiment, the second embodiment and the third embodiment. Figures 1 to 16The embodiment is different from the third embodiment in that the measuring tool further comprises a winding reel unit fixed to the outer wall of the outer sleeve 2, and the winding reel unit is used to collect the driving rope 10.

[0049] The winding reel unit comprises a second horizontal support arm 11 and a winding reel 12. The second horizontal support arm 11 is arranged at one side of the outer sleeve 2, and one end of the second horizontal support arm 11 is fixedly connected to the outer sleeve 2. The winding reel 12 is inserted into the side wall at the other end of the second horizontal support arm 11, and the second horizontal support arm 11 and the outer sleeve 2 are both located at the same side of the second horizontal support arm 11. The axis of the winding reel 12 is arranged perpendicularly to the second horizontal support arm 11.

[0050] The winding reel 12 comprises a second central shaft 12-1, a second rotating bearing 12-2, a reel 12-3, and a rotating handle 12-4. The second central shaft 12-1 is inserted into the side wall at the other end of the second horizontal support arm 11, and the axis of the second central shaft 12-1 is arranged perpendicularly to the second horizontal support arm 11. The reel 12-3 is sleeved on the second central shaft 12-1 and is rotatably connected to the second central shaft 12-1 through the second rotating bearing 12-2. The rotating handle 12-4 is arranged horizontally at the side of the reel 12-3 away from the second horizontal support arm 11, and one end of the rotating handle 12-4 is fixedly connected to the reel 12-3.

[0051] The end of the rotating handle 12-4 away from the reel 12-3 is fixedly connected to a rope ring 12-5, and a locking rope 12-6 is arranged on the rope ring 12-5. One end of the locking rope 12-6 is wound around the rope ring 12-5, and the other end of the locking rope 12-6 is hung on a positioning hook on the outer side of the outer sleeve 2. The other components and connection modes are the same as those in the third embodiment.

[0052] In the embodiment, the winding reel unit is arranged to wind and store the driving rope 10. The winding and unwinding state of the driving rope 10 also relates to the stretching and contracting state of the measuring telescopic pipe 3. When the measuring telescopic pipe 3 is contracted to the shortest, the position of the driving rope 10 needs to be stabilized. One end of the driving rope 10 is fixed to the inner cylinder of the reel 12-3, and the rotating handle 12-4 is rotated to wind the driving rope 10 on the reel 12-3. The rope ring 12-5 and the locking rope 12-6 are arranged to fix the rotating handle 12-4 to the outer sleeve 2 through the locking rope 12-6, so as to lock the position of the reel 12-3 when the measuring telescopic pipe 3 is contracted to the shortest, and the unwinding action does not occur.

[0053] The utility model discloses have with better implementation case reveal as above, however not to limit the utility model, any familiar professional technical personnel, in not departing from the utility model technical scheme range, when can utilize the structure and technical content disclosed above make a little change or modification for equivalent implementation case of equivalent change, but all the contents that are not departing from the utility model technical scheme, according to the technical essence of the utility model, the simple modification, equivalent change and modification of above implementation case, still belong to the utility model technical scheme range.

[0054] Working principle

[0055] Before use, the various components are assembled according to the connection relationship described in the first to fourth embodiments, first, the support plate 1 is placed on the top of the anchor rod pile hole and the stability of the measuring tool is ensured through the weight plate, and the arc-shaped limiting strip 1-1 also needs to be in contact with the inner wall of the anchor rod pile hole, and the axis of the measuring telescopic pipe 3 is located in the anchor rod pile hole, at this time, the measuring personnel adjust the folding rod 6 to be horizontal, and drive the measuring telescopic pipe 3 to rotate through the measuring telescopic pipe rotating drive unit 1-2, and then adjust the folding rod 6 to the side away from the hole wall of the anchor rod pile hole, at this time, the other end of the locking rope 12-6 is taken off from the hook on the outer wall of the outer sleeve 2 and the wire reel 12-3 is reversely rotated to realize the unwinding action of the driving rope 10, accompanied by the unwinding action of the driving rope 10, the measuring telescopic pipe 3 will extend downward until the measuring telescopic pipe 3 extends to the limit position, at this time, the measuring telescopic pipe 3 is driven to rotate through the measuring telescopic pipe rotating drive unit 1-2, and the folding rod 6 is adjusted to the side close to the hole wall of the anchor rod pile hole, then the wire reel 12-3 is forwardly rotated to realize the winding action of the driving rope 10, accompanied by the winding action of the driving rope 10, the measuring telescopic pipe 3 will shrink upward, when the folding rod 6 contacts the step between the enlarged head section and the ordinary hole section in the anchor rod pile hole, at this time, the wire reel 12-3 cannot be rotated, the measuring personnel can check and record the scale mark of the driving rope 10 at the top end of the measuring telescopic pipe 3, after recording, the wire reel 12-3 is reversely rotated for a small distance, and the measuring telescopic pipe 3 will extend downward for a small distance, and the measuring telescopic pipe 3 is driven to rotate through the measuring telescopic pipe rotating drive unit 1-2, and the folding rod 6 is adjusted to the side away from the hole wall of the anchor rod pile hole, at this time, the wire reel 12-3 is continuously forwardly rotated to realize the winding action of the driving rope 10, until the driving rope 10 is wound to the initial state, then the handle 12-4 is locked and positioned with the outer sleeve 2 through the locking rope 12-6, after ensuring that the wire reel 12-3 is fixed, the measuring tool can be taken out of the anchor rod pile hole, finally, the measuring personnel obtain the distance between the enlarged head section and the hole top in the anchor rod pile hole through the readings recorded just now, and subtract the distance between the top of the measuring telescopic pipe 3 and the hole top of the anchor rod pile hole, and add the distance from the hinge seat 5 to the top end of the vertical rod 4.

Claims

1. A measuring tool for measuring the distance between the enlarged head section and the hole top in a rock anchor hole, characterized in that: The measuring tool comprises a support plate (1), an outer sleeve (2), a measuring telescopic pipe (3), a driving rope (10) and a bottom end measuring unit, the outer sleeve (2) is inserted on the support plate (1) in the vertical direction, and the bottom end of the outer sleeve (2) extends below the support plate (1), the outer wall of the outer sleeve (2) is fixedly connected with the support plate (1), the measuring telescopic pipe (3) is inserted in the outer sleeve (2) in the vertical direction, and the two ends of the uppermost pipe section in the measuring telescopic pipe (3) both extend outside the outer sleeve (2), the uppermost pipe section in the measuring telescopic pipe (3) is rotationally connected with the outer sleeve (2) through a plurality of rotating bearings, the bottom end measuring unit is located at the bottom end of the lowermost pipe section in the measuring telescopic pipe (3), and the bottom end measuring unit is fixedly connected with the lowermost pipe section in the measuring telescopic pipe (3), the driving rope (10) is arranged in the measuring telescopic pipe (3), one end of the driving rope (10) is mounted on the top of the bottom end measuring unit, the other end of the driving rope (10) extends out of the top of the measuring telescopic pipe (3) and is arranged outside the measuring telescopic pipe (3), a scale mark is arranged on the outer surface of the driving rope (10) along the length extension direction of the driving rope (10), and the 0 point scale of the driving rope (10) is located at the fixed end of the bottom end measuring unit, the driving rope (10) drives the measuring telescopic pipe (3) to realize the contraction action by pulling the bottom end measuring unit, the bottom end measuring unit is provided with a measuring part capable of being folded, and the measuring part is used for limiting the step between the enlarged head section and the common hole section in the anchor rod hole.

2. A measuring tool for measuring the distance between the enlarged head section and the hole top in an anchor pile hole according to claim 1, characterized in that: An arc-shaped limiting stop (1-1) is arranged at the bottom of the support plate (1) and matches the hole surface in the anchor rod hole.

3. A tool for measuring the distance between the enlarged head section and the top of the hole in a hole drilled for an anchor rod according to claim 1, characterized in that: The bottom end measuring unit comprises a vertical rod (4), a hinged seat (5), a folding rod (6) and a limiting plate (7), the top end of the vertical rod (4) is provided with a limiting disc, the end surface diameter of the limiting disc is the same as the end surface diameter of the uppermost pipe section in the measuring telescopic pipe (3), the end surface diameter of the uppermost pipe section in the measuring telescopic pipe (3) gradually decreases to the end surface diameter of the lowermost pipe section, the vertical rod (4) is fixedly connected with the lowermost pipe section in the measuring telescopic pipe (3) through the limiting disc, the hinged seat (5) is arranged on one side of the bottom end of the vertical rod (4) and is fixedly connected with the vertical rod (4), the folding rod (6) is arranged in the hinged seat (5) and is arranged in a damping hinged manner with the hinged seat (5), the limiting plate (7) is horizontally arranged below the hinged seat (5), and one end of the limiting plate (7) is fixedly connected with the vertical rod (4), the limiting plate (7) is used for limiting the maximum folding angle of the folding rod (6), and the folding angle of the folding rod (6) ranges from 0° to 90°.

4. A tool for measuring the distance between the enlarged head section and the top of the hole in a hole drilled for an anchor rod according to claim 1, characterized in that: The measuring tool further comprises a top guide wheel unit, the top guide wheel unit is fixed on the outer wall of the outer sleeve (2), and the top guide wheel unit is used for guiding the driving rope (10).

5. A tool for measuring the distance between the enlarged head section and the top of the hole in a hole drilled for an anchor rod according to claim 4, characterized in that: The top guide wheel unit comprises a first horizontal support arm (8) and a guide wheel (9), the first horizontal support arm (8) is arranged on one side of the outer sleeve (2), and one end of the first horizontal support arm (8) is fixedly connected with the outer sleeve (2); the guide wheel (9) is inserted into the side wall of the other end of the first horizontal support arm (8), and the guide wheel (9) and the outer sleeve (2) are located on the same side of the first horizontal support arm (8); and the axis of the guide wheel (9) is perpendicular to the first horizontal support arm (8); The guide wheel (9) comprises a first central shaft (9-1), a first rotating bearing (9-2) and a guide wheel body (9-3), the first central shaft (9-1) is inserted into the side wall of the other end of the first horizontal support arm (8), and the axis of the first central shaft (9-1) is perpendicular to the first horizontal support arm (8); and the guide wheel body (9-3) is sleeved on the first central shaft (9-1) and is rotatably connected with the first central shaft (9-1) through the first rotating bearing (9-2).

6. A tool for measuring the distance between the enlarged head section and the top of the hole in a hole drilled for an anchor rod according to claim 5, characterized in that: The measuring tool further comprises a winding reel unit, which is fixed on the outer wall of the outer sleeve (2) and is used for collecting the driving rope (10).

7. A measuring tool for measuring the distance between the enlarged head section and the hole top in an anchor hole according to claim 1 or 4, characterized in that: The winding reel unit comprises a second horizontal support arm (11) and a winding reel (12), the second horizontal support arm (11) is arranged on one side of the outer sleeve (2), and one end of the second horizontal support arm (11) is fixedly connected with the outer sleeve (2); the winding reel (12) is inserted into the side wall of the other end of the second horizontal support arm (11), and the second horizontal support arm (11) and the outer sleeve (2) are located on the same side of the second horizontal support arm (11); and the axis of the winding reel (12) is perpendicular to the second horizontal support arm (11). The winding reel (12) comprises a second central shaft (12-1), a second rotating bearing (12-2), a reel (12-3) and a rotating handle (12-4), the second central shaft (12-1) is inserted into the side wall of the other end of the second horizontal support arm (11), and the axis of the second central shaft (12-1) is perpendicular to the second horizontal support arm (11); the reel (12-3) is sleeved on the second central shaft (12-1) and is rotatably connected with the second central shaft (12-1) through the second rotating bearing (12-2); and the rotating handle (12-4) is horizontally arranged on the side of the reel (12-3) away from the second horizontal support arm (11), and one end of the rotating handle (12-4) is fixedly connected with the reel (12-3).

8. A tool for measuring the distance between the enlarged head section and the top of the hole in a hole drilled for an anchor rod according to claim 7, characterized in that: The end of the rotating handle (12-4) away from the reel (12-3) is fixedly connected with a rope ring (12-5), a locking rope (12-6) is arranged on the rope ring (12-5), one end of the locking rope (12-6) is wound around the rope ring (12-5), and the other end of the locking rope (12-6) is hung on a positioning hook outside the outer sleeve (2).

9. A tool for measuring the distance between the enlarged head section and the top of the hole in a hole drilled for an anchor according to claim 1, characterized in that: The measuring tool further comprises a measuring telescopic pipe rotary drive unit (1-2) mounted on the top of the support plate (1), the driving end of the measuring telescopic pipe rotary drive unit (1-2) is arranged towards the outer sleeve (2), the corresponding position of the outer sleeve (2) and the measuring telescopic pipe rotary drive unit (1-2) is processed with a half-ring groove, the uppermost pipe section of the measuring telescopic pipe (3) is sleeved with a driven part at the corresponding position of the half-ring groove, and the measuring telescopic pipe rotary drive unit (1-2) drives the driven part to drive the measuring telescopic pipe (3) to rotate.

10. A tool for measuring the distance between the enlarged head section and the top of the hole in a hole for an anchor rod according to claim 9, characterized in that: The measuring telescopic pipe rotary drive unit (1-2) comprises a rack fixing seat (1-21), a rack (1-22), a U-shaped connecting piece (1-23), an electric push rod (1-24) and a push rod fixing seat (1-25), the electric push rod (1-24) is detachably mounted on the top of the support plate (1) through the push rod fixing seat (1-25), the rack (1-22) is located between the electric push rod (1-24) and the outer sleeve (2), and the length extension direction of the rack (1-22) is arranged in parallel with the axis extension direction of the electric push rod (1-24), the rack (1-22) is detachably connected on the top of the support plate (1) through the rack fixing seat (1-21), one end of the rack (1-22) is connected with the piston rod end of the electric push rod (1-24) through the U-shaped connecting piece (1-23), the tooth-shaped part of the rack (1-22) is arranged in correspondence with the half-ring groove on the outer sleeve (2), the uppermost pipe section of the measuring telescopic pipe (3) is sleeved with a tooth ring matched with the rack (1-22) at the corresponding position of the half-ring groove, and the rack (1-22) drives the tooth ring to rotate and in turn drives the measuring telescopic pipe (3) to rotate synchronously.

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