Background
In order to facilitate the installation of boundary piles, people are required to position the boundary piles, marks are made at the installation places, and then the boundary piles are installed.
Disclosure of Invention
In order to overcome the defects that the marks made by a shovel and a hoe are very common, so that mishaps are easy to occur, and a long period of time is needed, thereby a large amount of manpower is needed, the invention has the technical problems that: the boundary pile positioner for land planning is special in positioning mark and capable of reducing manpower.
The technical implementation scheme of the invention is as follows: a boundary pile positioner for land planning comprises a base plate, wheels, a support, a swing rod, a handle, a slide rod, a slide sleeve, a connecting frame, a guide sleeve, a guide rod, a first spring and a slotting device, wherein the left side and the right side of the bottom of the base plate are rotatably connected with the wheels with the moving function, the right part of the base plate is provided with a hole with the guiding function, the support is arranged on the left side of the top of the base plate, the swing rod is rotatably connected to the upper part of the support, the left end of the swing rod is fixedly connected with the handle, the right end of the swing rod is fixedly provided with the slide rod, the slide rod is slidably provided with the slide sleeve with the guiding function, the connecting frame is arranged on the upper part of the right side surface of the support, the right side surface of the connecting frame is provided with the guide sleeve, the guide rod is slidably arranged in the guide sleeve, the top end of the guide rod, the grooving device capable of grooving is arranged at the bottom end of the guide rod, and the lower part of the grooving device is positioned in the opening.
Further, the fluting device is including the mounting panel, the connecting rod, hollow barrel, the bearing frame, driving motor, pivot and cross blade, the mounting panel rigid coupling is in the bottom of guide arm, the connecting rod is all installed to the left and right sides of mounting panel bottom, be provided with hollow barrel between the bottom of controlling two connecting rods, the bearing frame has been inlayed to the centre at hollow barrel top, install in the bearing frame and to make cross blade pivoted pivot, the cross blade that plays the truncation effect is installed to the lower part of pivot, can make pivot pivoted driving motor set up in the middle of the bottom of mounting panel, the bottom of driving motor output shaft and the top rigid coupling of pivot, the opening that plays the transport effect is all opened to the left and right sides of hollow barrel.
Further, still including the scraper blade, the scraper blade is including the horizontal pole, the wedge, the movable rod, the second spring, the fly leaf, the scraper blade, connecting rod and leading wheel, the lower part at the guide arm trailing flank is installed to the horizontal pole, the wedge is all installed to the left and right sides of horizontal pole bottom, the trompil has all been opened at two wall middle parts about, the slide opening, the medial surface of slide opening is connected with the second spring, the movable rod is all installed to the inner of controlling two second springs, the fly leaf is all installed to the inner of controlling two movable rods, the medial surface lower part of controlling two fly leaves all is provided with the scraper blade that can scrape earth, the top of fly leaf articulates there is the connecting rod, the equal rotary type in outer end of controlling two connecting rods is connected with the leading wheel, control two leading wheels respectively with.
The handle is characterized by further comprising a movable sleeve, a third spring, a movable clamping hook and a fixed clamping hook, wherein the movable sleeve is arranged on the handle, the third spring is connected between the right side face of the movable sleeve and the right portion of the handle, the movable clamping hook is arranged on the right side of the bottom of the movable sleeve, the fixed clamping hook capable of limiting the handle is arranged on the upper portion of the left side face of the support, and the fixed clamping hook is matched with the movable clamping hook.
Further, still including the arc, inserted bar and fourth spring, two through-holes have all been opened to the upper and lower both sides of movable sleeve, the upper and lower both sides of movable sleeve all are connected with a plurality of fourth springs, be connected with the arc between the top of upside fourth spring, also be connected with the arc between the bottom of downside fourth spring, two inserted bars that play the fixed action are all installed to the medial surface of two upper and lower arcs, the inserted bar of upper and lower both sides all is located the through-hole that corresponds, the inner of upper and lower both sides inserted bar all contacts with the lateral surface of handle, the upper and lower both sides of handle are all opened there can be two jacks fixed to the movable sleeve.
According to the invention, the grooving device can be used for grooving on the ground, so that a user can quickly position the boundary pile, and the boundary pile can be conveniently identified through a special positioning mark, so that the user does not need to hold a hoe or a shovel to position and mark the boundary pile, and further, the manpower can be reduced; the soil in the hollow cylinder can be treated by the soil scraping device, so that a user can conveniently position the boundary pile by using the invention next time.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
Example 1
A boundary pile positioner for land planning is disclosed, as shown in figures 1-3, and comprises a bottom plate 1, wheels 2, a support 4, a swing rod 5, a handle 6, a slide rod 7, a sliding sleeve 8, a connecting frame 9, a guide sleeve 10, a guide rod 11, a first spring 12 and a slotting device 13, wherein the wheels 2 with a moving function are rotatably connected to the left and right sides of the bottom plate 1, a hole 3 with a guiding function is formed in the right part of the bottom plate 1, the support 4 is arranged on the left side of the top of the bottom plate 1, the support 4 is connected with the bottom plate 1 in a welding connection mode, the swing rod 5 is rotatably connected to the upper part of the support 4, the handle 6 is fixedly connected to the left end of the swing rod 5, the swing rod 5 is connected with the handle 6 in a welding connection mode, the slide rod 7 is fixed to the right end of the swing rod 5, the sliding sleeve 8 with a guiding function is slidably arranged on the slide rod 7, the connecting frame 9 is connected with a guide sleeve 10 in a welding connection mode, a guide rod 11 is arranged in the guide sleeve 10 in a sliding mode, the top end of the guide rod 11 is hinged with the bottom of the sliding sleeve 8, a first spring 12 is wound on the guide rod 11, the top end of the first spring 12 is fixedly connected with the upper portion of the guide rod 11, the bottom end of the first spring 12 is connected with the top of the guide sleeve 10, a grooving device 13 capable of grooving is installed at the bottom end of the guide rod 11, and the lower portion of the grooving device 13 is located in the opening 3.
Example 2
A boundary pile positioner for land planning is disclosed, as shown in figures 1-3, comprising a bottom plate 1, wheels 2, a bracket 4, a swing rod 5, a handle 6, a slide bar 7, a sliding sleeve 8, a connecting frame 9, a guide sleeve 10, a guide rod 11, a first spring 12 and a slotting device 13, wherein the wheels 2 with a moving function are rotatably connected to the left and right sides of the bottom plate 1, the right part of the bottom plate 1 is provided with a hole 3 with a guiding function, the bracket 4 is arranged at the left side of the top of the bottom plate 1, the swing rod 5 is rotatably connected to the upper part of the bracket 4, the left end of the swing rod 5 is fixedly connected with the handle 6, the right end of the swing rod 5 is fixedly connected with the slide bar 7, the sliding sleeve 8 with a guiding function is slidably arranged on the slide bar 7, the connecting frame 9 is arranged at the upper part of the right side surface of the bracket 4, the guide sleeve 10 is provided, the guide rod 11 is wound with a first spring 12, the top end of the first spring 12 is fixedly connected with the upper part of the guide rod 11, the bottom end of the first spring 12 is connected with the top part of the guide sleeve 10, a slotting device 13 capable of slotting is installed at the bottom end of the guide rod 11, and the lower part of the slotting device 13 is positioned in the open hole 3.
The slotting device 13 comprises a mounting plate 131, a connecting rod 132, a hollow cylinder 133, a bearing seat 134, a driving motor 135, a rotating shaft 136 and a cross blade 138, the mounting plate 131 is fixedly connected with the bottom end of the guide rod 11, the mounting plate 131 is connected with the guide rod 11 by welding, the connecting rod 132 is mounted on the left side and the right side of the bottom of the mounting plate 131, the hollow cylinder 133 is arranged between the bottom ends of the left connecting rod 132 and the right connecting rod 132, the connecting rod 132 is connected with the hollow cylinder 133 by welding, the bearing seat 134 is embedded in the middle of the top of the hollow cylinder 133, the rotating shaft 136 capable of rotating the cross blade 138 is mounted in the bearing seat 134, the cross blade 138 with the cutting function is mounted on the lower part of the rotating shaft 136, the rotating shaft 136 is connected with the cross blade 138 by welding, the driving motor 135 capable of rotating the rotating shaft 136 is arranged in, the left and right sides of the hollow cylinder 133 are provided with openings 137 for transportation.
Example 3
A boundary pile positioner for land planning is disclosed, as shown in figures 1-3, comprising a bottom plate 1, wheels 2, a bracket 4, a swing rod 5, a handle 6, a slide bar 7, a sliding sleeve 8, a connecting frame 9, a guide sleeve 10, a guide rod 11, a first spring 12 and a slotting device 13, wherein the wheels 2 with a moving function are rotatably connected to the left and right sides of the bottom plate 1, the right part of the bottom plate 1 is provided with a hole 3 with a guiding function, the bracket 4 is arranged at the left side of the top of the bottom plate 1, the swing rod 5 is rotatably connected to the upper part of the bracket 4, the left end of the swing rod 5 is fixedly connected with the handle 6, the right end of the swing rod 5 is fixedly connected with the slide bar 7, the sliding sleeve 8 with a guiding function is slidably arranged on the slide bar 7, the connecting frame 9 is arranged at the upper part of the right side surface of the bracket 4, the guide sleeve 10 is provided, the guide rod 11 is wound with a first spring 12, the top end of the first spring 12 is fixedly connected with the upper part of the guide rod 11, the bottom end of the first spring 12 is connected with the top part of the guide sleeve 10, a slotting device 13 capable of slotting is installed at the bottom end of the guide rod 11, and the lower part of the slotting device 13 is positioned in the open hole 3.
The slotting device 13 comprises a mounting plate 131, connecting rods 132, a hollow cylinder 133, bearing seats 134, a driving motor 135, a rotating shaft 136 and a cross blade 138, the mounting plate 131 is fixedly connected to the bottom end of the guide rod 11, the connecting rods 132 are mounted on the left side and the right side of the bottom of the mounting plate 131, the hollow cylinder 133 is arranged between the bottom ends of the left connecting rod 132 and the right connecting rod 132, the bearing seats 134 are embedded in the middle of the top of the hollow cylinder 133, the rotating shaft 136 capable of rotating the cross blade 138 is mounted in the bearing seats 134, the cross blade 138 with a cutting function is mounted on the lower portion of the rotating shaft 136, the driving motor 135 capable of rotating the rotating shaft 136 is arranged in the middle of the bottom of the mounting plate 131, the bottom end of an output shaft of the driving motor.
The soil scraping device 14 is further included, the soil scraping device 14 includes a cross bar 141, a wedge block 142, a movable rod 144, a second spring 145, a movable plate 146, a scraper 147, a connecting rod 148 and a guide wheel 149, the cross bar 141 is installed at the lower portion of the rear side surface of the guide rod 11, the wedge block 142 is installed at each of the left side and the right side of the bottom of the cross bar 141, the cross bar 141 is connected with the wedge block 142 in a welding connection mode, a sliding hole 143 is formed in the middle portion of each of the left wall and the right wall of the opening 3, the second spring 145 is connected to the inner side surface of the sliding hole 143, the movable rods 144 are installed at the inner ends of the left second spring 145 and the right second spring 145, the movable plates 146 are installed at the inner ends of the left movable rods 144 and the right movable rods, the movable rods 144 are connected with the movable plate 146 in a welding connection mode, the scraper 147 capable of scraping soil is arranged at the outer, the left and right guide wheels 149 are respectively in contact with the corresponding wedge blocks 142.
Example 4
A boundary pile positioner for land planning is disclosed, as shown in figures 1-3, comprising a bottom plate 1, wheels 2, a bracket 4, a swing rod 5, a handle 6, a slide bar 7, a sliding sleeve 8, a connecting frame 9, a guide sleeve 10, a guide rod 11, a first spring 12 and a slotting device 13, wherein the wheels 2 with a moving function are rotatably connected to the left and right sides of the bottom plate 1, the right part of the bottom plate 1 is provided with a hole 3 with a guiding function, the bracket 4 is arranged at the left side of the top of the bottom plate 1, the swing rod 5 is rotatably connected to the upper part of the bracket 4, the left end of the swing rod 5 is fixedly connected with the handle 6, the right end of the swing rod 5 is fixedly connected with the slide bar 7, the sliding sleeve 8 with a guiding function is slidably arranged on the slide bar 7, the connecting frame 9 is arranged at the upper part of the right side surface of the bracket 4, the guide sleeve 10 is provided, the guide rod 11 is wound with a first spring 12, the top end of the first spring 12 is fixedly connected with the upper part of the guide rod 11, the bottom end of the first spring 12 is connected with the top part of the guide sleeve 10, a slotting device 13 capable of slotting is installed at the bottom end of the guide rod 11, and the lower part of the slotting device 13 is positioned in the open hole 3.
The slotting device 13 comprises a mounting plate 131, connecting rods 132, a hollow cylinder 133, bearing seats 134, a driving motor 135, a rotating shaft 136 and a cross blade 138, the mounting plate 131 is fixedly connected to the bottom end of the guide rod 11, the connecting rods 132 are mounted on the left side and the right side of the bottom of the mounting plate 131, the hollow cylinder 133 is arranged between the bottom ends of the left connecting rod 132 and the right connecting rod 132, the bearing seats 134 are embedded in the middle of the top of the hollow cylinder 133, the rotating shaft 136 capable of rotating the cross blade 138 is mounted in the bearing seats 134, the cross blade 138 with a cutting function is mounted on the lower portion of the rotating shaft 136, the driving motor 135 capable of rotating the rotating shaft 136 is arranged in the middle of the bottom of the mounting plate 131, the bottom end of an output shaft of the driving motor.
The soil scraping device 14 is further included, the soil scraping device 14 comprises a cross rod 141, wedge blocks 142, movable rods 144, second springs 145, movable plates 146, scraping plates 147, connecting rods 148 and guide wheels 149, the cross rod 141 is installed on the lower portion of the rear side face of the guide rod 11, the wedge blocks 142 are installed on the left side and the right side of the bottom of the cross rod 141, sliding holes 143 are formed in the middle portions of the left wall and the right wall of the opening 3, the second springs 145 are connected to the inner side faces of the sliding holes 143, the movable rods 144 are installed at the inner ends of the left second spring 145 and the inner end of the right second spring 145, the movable plates 146 are installed at the inner ends of the left movable rod 144 and the inner end of the right movable rod 144, the scraping plates 147 capable of scraping soil are arranged on the lower portions of the inner side faces of the left movable plate 146 and the right movable plate 146, the connecting rods 148.
Still including the movable sleeve 15, the third spring 16, activity trip 17 and fixed trip 18, the movable sleeve 15 sets up on handle 6, be connected with the third spring 16 between the right flank of movable sleeve 15 and the right part of handle 6, movable sleeve 15 and handle 6 all are connected with third spring 16 through welded connection's mode, movable trip 17 is installed on the right side of movable sleeve 15 bottom, the upper portion of 4 left surfaces of support is installed and is can be to the spacing fixed trip 18 of handle 6, support 4 is connected with fixed trip 18 through welded connection's mode, fixed trip 18 and the cooperation of activity trip 17.
Example 5
A boundary pile positioner for land planning is disclosed, as shown in figures 1-3, comprising a bottom plate 1, wheels 2, a bracket 4, a swing rod 5, a handle 6, a slide bar 7, a sliding sleeve 8, a connecting frame 9, a guide sleeve 10, a guide rod 11, a first spring 12 and a slotting device 13, wherein the wheels 2 with a moving function are rotatably connected to the left and right sides of the bottom plate 1, the right part of the bottom plate 1 is provided with a hole 3 with a guiding function, the bracket 4 is arranged at the left side of the top of the bottom plate 1, the swing rod 5 is rotatably connected to the upper part of the bracket 4, the left end of the swing rod 5 is fixedly connected with the handle 6, the right end of the swing rod 5 is fixedly connected with the slide bar 7, the sliding sleeve 8 with a guiding function is slidably arranged on the slide bar 7, the connecting frame 9 is arranged at the upper part of the right side surface of the bracket 4, the guide sleeve 10 is provided, the guide rod 11 is wound with a first spring 12, the top end of the first spring 12 is fixedly connected with the upper part of the guide rod 11, the bottom end of the first spring 12 is connected with the top part of the guide sleeve 10, a slotting device 13 capable of slotting is installed at the bottom end of the guide rod 11, and the lower part of the slotting device 13 is positioned in the open hole 3.
The slotting device 13 comprises a mounting plate 131, connecting rods 132, a hollow cylinder 133, bearing seats 134, a driving motor 135, a rotating shaft 136 and a cross blade 138, the mounting plate 131 is fixedly connected to the bottom end of the guide rod 11, the connecting rods 132 are mounted on the left side and the right side of the bottom of the mounting plate 131, the hollow cylinder 133 is arranged between the bottom ends of the left connecting rod 132 and the right connecting rod 132, the bearing seats 134 are embedded in the middle of the top of the hollow cylinder 133, the rotating shaft 136 capable of rotating the cross blade 138 is mounted in the bearing seats 134, the cross blade 138 with a cutting function is mounted on the lower portion of the rotating shaft 136, the driving motor 135 capable of rotating the rotating shaft 136 is arranged in the middle of the bottom of the mounting plate 131, the bottom end of an output shaft of the driving motor.
The soil scraping device 14 is further included, the soil scraping device 14 comprises a cross rod 141, wedge blocks 142, movable rods 144, second springs 145, movable plates 146, scraping plates 147, connecting rods 148 and guide wheels 149, the cross rod 141 is installed on the lower portion of the rear side face of the guide rod 11, the wedge blocks 142 are installed on the left side and the right side of the bottom of the cross rod 141, sliding holes 143 are formed in the middle portions of the left wall and the right wall of the opening 3, the second springs 145 are connected to the inner side faces of the sliding holes 143, the movable rods 144 are installed at the inner ends of the left second spring 145 and the inner end of the right second spring 145, the movable plates 146 are installed at the inner ends of the left movable rod 144 and the inner end of the right movable rod 144, the scraping plates 147 capable of scraping soil are arranged on the lower portions of the inner side faces of the left movable plate 146 and the right movable plate 146, the connecting rods 148.
Still including movable sleeve 15, third spring 16, activity trip 17 and fixed trip 18, movable sleeve 15 sets up on handle 6, is connected with third spring 16 between the right flank of movable sleeve 15 and the right part of handle 6, and movable trip 17 is installed on the right side of movable sleeve 15 bottom, and the upper portion of support 4 left surface is installed and is can be to the spacing fixed trip 18 of handle 6, and fixed trip 18 cooperates with movable trip 17.
Still including arc 19, inserted bar 21 and fourth spring 22, two through-holes 20 have all been opened to the upper and lower both sides of movable sleeve 15, the upper and lower both sides of movable sleeve 15 all are connected with a plurality of fourth springs 22, movable sleeve 15 passes through welded connection's mode and is connected with fourth spring 22, be connected with arc 19 between the top of upside fourth spring 22, also be connected with arc 19 between the bottom of downside fourth spring 22, two inserted bars 21 that play fixed action are all installed to the medial surface of two upper and lower arcs 19, arc 19 is connected with inserted bar 21 through welded connection's mode, the inserted bar 21 of upper and lower both sides all is located corresponding through-hole 20, the inner of upper and lower both sides inserted bar 21 all contacts with the lateral surface of handle 6, the upper and lower both sides of handle 6 are all opened there are two jacks 23 that can be fixed to movable sleeve 15.
When the slotting device is used, a user moves the slotting device to a proper position, then holds the handle 6 to enable the left part of the oscillating rod 5 to swing upwards, the right part of the oscillating rod 5 swings downwards to drive the sliding rod 7 to swing downwards, the sliding rod 7 swings downwards to drive the sliding sleeve 8 to swing downwards, the sliding sleeve 8 swings downwards to enable the guide rod 11 to move downwards, the first spring 12 is compressed along with the sliding sleeve, the guide rod 11 moves downwards to drive the slotting device 13 to insert downwards into the ground, after the slotting device 13 is inserted downwards into the ground to a proper position, the user cuts off soil through the slotting device 13, then releases the handle 6, the slotting device 13 can move upwards to reset under the action of the elastic force of the first spring 12, then the user moves the slotting device to the right to move away from a slot pit, and then the user takes out the soil in the slotting device 13, so that the user can use the slotting device for, the positioning mark can be special and is convenient to identify, and a user does not need to hold the hoe or the shovel to position and mark the boundary pile, so that the labor force can be reduced.
The guide rod 11 moves downwards to drive the mounting plate 131 to move downwards, the first spring 12 compresses along with the guide rod, the mounting plate 131 moves downwards to drive the part on the mounting plate to move downwards, the hollow cylinder 133 can move downwards, after the hollow cylinder 133 moves downwards to a proper position, a user starts the driving motor 135 to rotate the rotating shaft 136, the rotating shaft 136 rotates to drive the cross blade 138 to rotate, soil on the lower side of the hollow cylinder 133 can be cut off through the rotation of the cross blade 138, after the soil is cut off, the user closes the driving motor 135, then the user loosens the handle 6, the hollow cylinder 133 can move upwards to reset under the action of the elastic force of the first spring 12, then the user moves the device to the right to far leave the groove pit, and then the user takes out the soil in the hollow cylinder 133, so that the user can conveniently and quickly position a boundary pile.
When the soil in the hollow cylinder 133 needs to be taken out, the user moves the present invention to the right far away from the groove pit, then the user swings the handle 6 upwards, so that the guide rod 11 can move downwards, the first spring 12 is compressed therewith, the guide rod 11 moves downwards to move the hollow cylinder 133 downwards, the guide rod 11 moves downwards to drive the cross rod 141 to move downwards, the cross rod 141 moves downwards to drive the wedge-shaped blocks 142 to move downwards, the left wedge-shaped blocks 142 and the right wedge-shaped blocks 142 move downwards to press the guide wheels 149 on the left side and the right side to move inwards, the guide wheels 149 on the left side and the right side move inwards to drive the connecting rods 148 on the left side and the right side to move inwards, the connecting rods 148 on the left side and the right side move inwards to drive the movable plates 146 on the left side and the right side to move inwards, the movable plates 146 on the left side and the right side move inwards to drive the scrapers 147, the second spring 145 is extended along with the continuous downward movement of the left and right wedge-shaped blocks 142, so that the left and right scrapers 147 can move inwards, the hollow cylinder 133 moves downwards to be matched with the left and right scrapers 147, so that the soil in the hollow cylinder 133 can be taken out, after all the soil is taken out, a user releases the handle 6 along with the second spring, the wedge-shaped blocks 142 can move upwards to reset under the action of the first spring 12, meanwhile, the movable plate 146 can move to reset under the action of the elasticity of the second spring 145, because the guide wheel 149 is not reset, the user needs to swing the handle 6 downwards, so that the guide rod 11 can move upwards, the first spring 12 is extended along with the second spring, the wedge-shaped blocks 142 can move upwards to be positioned at the upper side of the guide wheel 149, then, the user releases the handle 6, the wedge-shaped blocks 142 can move downwards to reset to be contacted with the guide wheel 149 under the action of the first spring 12, therefore, the soil in the hollow cylinder 133 can be conveniently treated by a user, and the boundary pile can be conveniently positioned by the user by using the invention for the next time.
When the boundary pile needs to be positioned by using the invention, the user moves the movable sleeve 15 rightwards, the third spring 16 is compressed along with the movable sleeve 15 rightwards, the movable clamp hook 17 is driven to move rightwards to be far away from the fixed clamp hook 18 by moving the movable clamp hook 15 rightwards, so that the fixing of the handle 6 can be released, then the user swings the handle 6 upwards and releases the movable sleeve 15, the movable sleeve 15 can move leftwards to reset under the action of the elastic force of the third spring 16, when the invention is not needed to be used, the user moves the movable sleeve 15 rightwards, the third spring 16 is compressed along with the movable sleeve, then the user swings the handle 6 to reset, then the user releases the movable sleeve 15, the movable clamp hook 17 can be matched with the fixed clamp hook 18 under the action of the third spring 16, so that the handle 6 can be fixed, and therefore, when the user pushes the invention, the.
Initially, the fourth spring 22 is in an extended state, when the boundary pile needs to be positioned by using the invention, a user moves the arc plate 19 rightwards, the arc plate 19 rightwards moves to drive the inserted rod 21 rightwards, the inserted rod 21 rightwards moves to enable the movable sleeve 15 to rightwards, the third spring 16 is compressed therewith, when the inserted rod 21 rightwards moves to a proper position, the inserted rods 21 on the upper side and the lower side can be clamped into the corresponding insertion holes 23 under the action of the elastic force of the fourth spring 22, so that the position of the movable clamping hook 17 can be fixed, the user can conveniently use the invention to position the boundary pile, when the invention is not needed, the user enables the arc plates 19 on the upper side and the lower side to be far away from the movable sleeve 15, the fourth spring 22 stretches along with the arc plates, and simultaneously enables the inserted rods 21 on the upper side and the lower side to be moved out of the corresponding insertion holes 23, so that the fixation of the movable clamping hook 17 can be released, and the movable sleeve, therefore, the invention is convenient for users to operate.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.