A construction site planning marker device

Abstract

The present application relates to the field of road construction, in particular to a kind of building site planning marking equipment, including hand push rod, shell and walking wheel;Walking wheel has two, coaxial and interval distribution, shell is located between two walking wheels, respectively by two driving members installed in shell drive rotation;Shell bottom is equipped with nozzle;One end of hand push rod is rotatably installed in shell, for pushing shell to move;Walking wheel is provided with multiple thimbles around its circumference, and the thimbles extend radially and can move radially;Trigger assembly is arranged between hand push rod and walking wheel, when the moving speed of operator pushing hand push rod and the moving speed of walking wheel do not match, the thimbles are moved to flush with the outer circumferential surface of walking wheel, increase the moving resistance of walking wheel, at the same time, remind operator to adjust the moving speed of pushing hand push rod, and then reduce the influence on shell movement, improve the accuracy of marking.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of road construction, in particular to a building site planning marking device. BACKGROUND

[0002] The marking work of the building site is an important task in the early preparation of construction, which is usually used to demarcate the construction area, the position of the building, the road layout, the pipeline direction, etc. The accuracy of marking directly affects the quality and progress of subsequent construction. The commonly used marking devices include four-wheel and two-wheel trolleys. The four-wheel trolley structure is usually more complex, which is suitable for sites requiring high precision or large range. The two-wheel trolley structure is simple and light, but has poor stability, which is suitable for small sites or simple applications. Among them, the H-shaped two-wheel marking trolley usually needs an operator to push the hand push rod to assist in moving. This method depends on the experience of the operator, and the marking accuracy is low. SUMMARY

[0003] The present application provides a building site planning marking device to solve the problem of low marking accuracy of the existing two-wheel marking trolley.

[0004] The building site planning marking device of the present application adopts the following technical scheme:

[0005] A building site planning marking device, comprising a hand push rod, a shell and walking wheels; the walking wheels are two, coaxial and spaced apart, the shell is located between the two walking wheels, the rotation shafts of the two walking wheels are both horizontal and are rotatably installed on the shell, and are driven to rotate by two driving members installed inside the shell; the shell bottom is provided with a nozzle; one end of the hand push rod is rotatably installed on the shell for pushing the shell to move; a plurality of thimbles are arranged around the walking wheel in the circumferential direction, the thimbles extend radially along the walking wheel and can move radially; a trigger assembly is arranged between the hand push rod and the walking wheel, which moves the thimbles to be flush with the outer circumferential surface of the walking wheel when the moving speed of the hand push rod and the moving speed of the walking wheel do not match, thereby increasing the moving resistance of the walking wheel and reminding the operator to control the moving speed of the hand push rod.

[0006] Optionally, the horizontal direction perpendicular to the rotation axis of the walking wheel is the first direction; the connecting shaft is installed in the shell and can move in the first direction in the shell and rotate around the vertical axis; one end of the hand push rod is axially hinged to the connecting shaft around the connecting shaft; the trigger assembly comprises a connecting rod, a transmission block and two transmission shafts; the two transmission shafts are coaxial with the rotation axes of the two walking wheels respectively, and each transmission shaft is slidingly installed in one rotation axis; the opposite ends of the two transmission shafts are provided with installation grooves adapted to the transmission block; the transmission block is connected to the connecting shaft through the connecting rod and is installed in the installation grooves between the two transmission shafts; the width of the transmission block in the axial direction of the transmission shaft is smaller than the length of the transmission block in the first direction; the width of the middle part of the transmission block in the first direction is greater than the width of the two ends; when the transmission block moves or rotates in the first direction relative to the transmission shaft, the two transmission shafts are pushed away from each other, and the two transmission shafts push the corresponding top pins in the walking wheels to move out.

[0007] Optionally, the two ends of the connecting shaft are respectively provided with one sliding block, and the two sliding blocks are slidingly installed in the shell in the first direction and are provided with first elastic members between the shell and the sliding blocks in the first direction; a vertically arranged hinge shaft is rotatably installed in the sliding block, the end of the connecting shaft penetrates the sliding block, and the end of the connecting shaft is provided with a vertical long hole penetrating through the vertical direction, the hinge shaft penetrates the long hole, and the length of the long hole in the axial direction of the connecting shaft is greater than the diameter of the hinge shaft.

[0008] Optionally, the first elastic members are four and are in two groups, and the two first elastic members in the same group are respectively located on the two sides of one sliding block in the first direction and are respectively connected to the shell and the sliding block.

[0009] Optionally, the walking wheel is provided with a containing groove accommodating the end of the transmission shaft, and the ends of the two transmission shafts away from each other are respectively located in the containing groove in the corresponding walking wheel, the outer peripheral surface of the end of the transmission shaft is an arc surface and abuts against the end of the top pin close to the center of the walking wheel; the top pin and the walking wheel are connected through a second elastic member, and the second elastic member promotes the top pin to retract into the walking wheel.

[0010] Optionally, the driving member is a motor, the output shaft of the motor is parallel to the rotation axis of the walking wheel, and the rotation axis of the walking wheel is driven to rotate through a set of gears.

[0011] Optionally, the horizontal section of the transmission block is a rhombus, and the long side of the rhombus is in the first direction, and the short side of the rhombus is in the axial direction of the transmission shaft.

[0012] Optionally, the plurality of top pins are located in the middle part in the axial direction of the walking wheel.

[0013] Optionally, the shell is provided with a hopper, the hopper is used for storing paint, and the hopper is communicated with the nozzle.

[0014] Optionally, the rotation axis of the transmission wheel is rotatably connected to the shell through a bearing.

[0015] The beneficial effects of the present application are that the two walking wheels of the building site planning marking device are driven to rotate by different driving members, which can not only move the shell along a straight line, but also move along an arc trajectory, and compared with manually pushing the shell to move, the movement is more stable, the line marking accuracy is higher, and the operator only needs to push the hand push rod to assist the forward movement, and the operation is simple.

[0016] When the operator accidentally touches or improperly operates, the speed of the hand push rod is too fast or too slow, the trigger assembly moves the needle to protrude flush with the outer circumferential surface of the walking wheel, increases the moving resistance of the walking wheel, avoids the shell from deviating too much under the misoperation of the operator, and when the operator feels the change of the moving resistance of the walking wheel, feedback can be obtained, the speed of the hand push rod is adjusted in time, and the influence on the movement of the shell is reduced, and the line marking accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0018] Figure 1 It is an overall structure schematic diagram of an embodiment of a building site planning marking device of the present application.

[0019] Figure 2 It is an overall structure side view of an embodiment of a building site planning marking device of the present application.

[0020] Figure 3 It is a sectional view along A-A direction. Figure 2

[0021] It is a sectional view along B-B direction. Figure 4 Figure 3 It is an enlarged schematic view at E.

[0022] Figure 5 Figure 2 It is a sectional view along C-C direction.

[0023] Figure 6 It is an enlarged schematic view at F. Figure 2

[0024] Figure 7 Figure 6

[0025] Figure 8 ​​​​​This is a front view of the overall structure of an embodiment of a building site planning and marking device according to the present invention;

[0026] Figure 9 for Figure 8 Schematic diagram of cross section in the DD direction.

[0027] In the diagram: 100, push rod; 200, housing; 210, drive component; 220, connecting shaft; 221, slider; 222, first elastic element; 223, hinge shaft; 230, nozzle; 240, hopper; 300, traveling wheel; 310, rotating shaft; 320, ejector pin; 321, second elastic element; 400, trigger assembly; 410, connecting rod; 420, transmission block; 430, transmission shaft. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] An embodiment of the building site planning marking device of the present invention, such as... Figures 1 to 9 As shown, it includes a push rod 100, a housing 200, and wheels 300.

[0030] There are two coaxial, spaced-apart wheels 300. A housing 200 is located between the two wheels 300. The shafts 310 of both wheels 300 are horizontally and rotatably mounted on the housing 200, and are driven by two drive units 210 installed within the housing 200. Specifically, the shafts 310 of the wheels 300 are rotatably connected to the housing 200 via bearings. Each drive unit 210 is a motor, with its output shaft parallel to the shaft 310 of the wheels 300, and drives the shaft 310 to rotate via a set of gears. When the two motors rotate at the same speed, the two wheels 300 rotate at the same speed, causing the housing 200 to move linearly. When the two motors rotate at different speeds, the two wheels 300 cause the housing 200 to move along a circular arc trajectory. By adjusting the difference in speed between the two motors, the radius of the circular arc trajectory can be controlled. To facilitate control of the wheel trajectory, both drive units 210 are selected as motors that can be remotely controlled or program-controlled.

[0031] The nozzle 230 is mounted at the bottom of the shell 200 and is located at the center of symmetry of the two walking wheels 300, and sprays or drops the paint to the ground when the walking wheels 300 move. Specifically, when drawing a circular arc trajectory line, the rotational speed of the walking wheel 300 close to the center of the circular arc trajectory is n1, the distance from the center is r1; the rotational speed of the walking wheel 300 far from the center of the circular arc trajectory is n3, the distance from the center is r3; the distance between the two walking wheels 300 is a, the walking time is t, and the distance between the nozzle 230 and the center is r2. It is known that

[0032] n3*t=2πr3,

[0033] n1*t=2πr1,

[0034] r3=r1+a, and

[0035] n3t / n1t=2πr3 / 2πr1, and after rearrangement

[0036] n3 / n1=(r1+a) / r1=1+a / r1, and after further rearrangement

[0037] r1=a / (n3 / n1-1), r2=r1+a / 2=a / (n3 / n1-1)+a / 2.

[0038] In summary, by adjusting the rotational speed ratio of the two walking wheels 300, circular arc trajectories of different radii can be drawn.

[0039] One end of the hand push rod 100 is rotatably mounted on the shell 200 and is used to push the shell 200 to move; a plurality of push pins 320 are arranged in the walking wheel 300 around the circumference thereof, the push pins 320 extend radially along the walking wheel 300 and can move radially along the walking wheel 300; a trigger assembly 400 is arranged between the hand push rod 100 and the walking wheel 300, and when the moving speed of the hand push rod 100 operated by the operator does not match the moving speed of the walking wheel 300, the trigger assembly 400 moves the push pin 320 to be flush with the outer circumferential surface of the walking wheel 300, thereby increasing the moving resistance of the walking wheel 300 and reminding the operator to control the moving speed of the hand push rod 100.

[0040] Since the walking wheel 300 is only two, in use need to operate personnel holding hand push rod 100 auxiliary shell 200 forward, because the walking wheel 300 is driven by the driving member 210 rotation and drive shell 200 forward, the speed of manually pushing shell 200 movement needs to be as far as possible with the speed of walking wheel 300 drive shell 200 forward adapt. But in the operator misoperation or improper operation, the speed of pushing hand push rod 100 is too fast or too slow, trigger assembly 400 makes the thimble 320 moves out and is flush with the outer periphery of the walking wheel 300, increase the moving resistance of walking wheel 300, avoid shell 200 under the misoperation of the operator deviates too much, and when the operator feels the change of walking wheel 300 moving resistance can get feedback, timely adjust the speed of pushing hand push rod 100, and then reduce the influence on the movement of shell 200, improve the accuracy of marking.

[0041] In the embodiment, the horizontal direction perpendicular to the rotation shaft 310 of the walking wheel 300 is the first direction, and the first direction is the moving direction of the shell 200; the connecting shaft 220 is installed in the shell 200, and can move in the first direction in the shell 200 and rotate around the vertical axis; one end of the hand lever 100 is axially hinged to the middle part of the connecting shaft 220. The trigger assembly 400 includes the connecting rod 410, the transmission block 420 and two transmission shafts 430; the two transmission shafts 430 are coaxial with the rotation shafts 310 of the two walking wheels 300 respectively, and each transmission shaft 430 is slidingly installed in one rotation shaft 310; the two transmission shafts 430 are arranged in sequence along the axial direction of the rotation shaft 310, and the opposite ends of the two transmission shafts 430 are provided with the mounting grooves adapted to the transmission block 420. The transmission block 420 is connected with the connecting shaft 220 through the connecting rod 410, and is installed in the mounting grooves between the two transmission shafts 430; the width of the transmission block 420 in the axial direction of the transmission shaft 430 is less than the length of the transmission block 420 in the first direction; and the width of the middle part of the transmission block 420 in the first direction is greater than the width of the two ends of the transmission block 420; when the transmission block 420 moves or rotates in the first direction relative to the transmission shaft 430, the transmission block 420 pushes the two transmission shafts 430 away from each other, and the two transmission shafts 430 push the corresponding top pins 320 in the walking wheels 300 to move and extend out. In the initial state, the side wall of the transmission block 420 is in contact with the side wall of the mounting groove, and when the operator pushes the hand lever 100 to generate a transient forward movement (the front side of the shell 200 in the moving direction, i.e. the front side in the first direction), the connecting shaft 220 drives the transmission block 420 to move forward relative to the transmission shaft 430 through the connecting rod 410, and since the width of the middle part of the transmission block 420 in the first direction is greater than the width of the two ends of the transmission block 420, the transmission block 420 pushes the two transmission shafts 430 away from each other when moving forward relative to the transmission shaft 430, and then pushes the top pins 320 to extend out. When the two walking wheels 300 rotate at different speeds to drive the shell 200 to move along the arc-shaped track, if the operator pushes the hand lever 100 to generate a rotation greater than the current rotation amplitude of the shell 200, the connecting shaft 220 drives the transmission block 420 to rotate relative to the transmission shaft 430 through the connecting rod 410, and since the width of the transmission block 420 in the axial direction of the transmission shaft 430 is less than the length of the transmission block 420 in the first direction, the transmission block 420 also pushes the two transmission shafts 430 away from each other when rotating relative to the transmission shaft 430, and then pushes the top pins 320 to extend out.

[0042] In the embodiment, two ends of the connecting shaft 220 are respectively provided with a sliding block 221, the two sliding blocks 221 are slidingly installed on the shell 200 along the first direction, and a first elastic member 222 along the first direction is arranged between the sliding blocks 221 and the shell 200; a vertical hinge shaft 223 is rotatably installed in the sliding block 221, the end of the connecting shaft 220 penetrates the sliding block 221, and the end of the connecting shaft 220 is provided with a vertical long hole, the hinge shaft 223 penetrates the long hole, and the length of the long hole in the axial direction of the connecting shaft 220 is greater than the diameter of the hinge shaft 223. The sliding block 221 is provided with a through hole for the connecting shaft 220 to penetrate, and the length of the through hole in the first direction is greater than the diameter of the connecting shaft 220, and the through hole and the long hole provide a space for the rotation of the two ends of the connecting shaft 220 around the hinge shaft 223.

[0043] In the embodiment, the first elastic member 222 has four, and two pairs, the two first elastic members 222 in the same group are located on both sides of a sliding block 221 in the first direction, and are respectively connected to the shell 200 and the sliding block 221. In the initial state, the four first elastic members 222 jointly act to keep the transmission block 420 in the state of abutting the mounting groove through the connecting rod 410.

[0044] In the embodiment, the walking wheel 300 is provided with a containing groove for accommodating the end of the transmission shaft 430, the ends of the two transmission shafts 430 away from each other are respectively located in the containing groove in the corresponding walking wheel 300, and the plurality of thimbles 320 are located in the middle of the axial direction of the walking wheel 300, and the end close to the center of the walking wheel 300 extends into the containing groove. The outer circumferential surface of the end of the transmission shaft 430 is arc-shaped and abuts against the end of the thimble 320 close to the center of the walking wheel 300. The thimble 320 and the walking wheel 300 are connected by the second elastic member 321, and the second elastic member 321 promotes the thimble 320 to retract into the walking wheel 300. In some other embodiments, the second elastic member 321 is a spring or a spring strip connecting the thimble 320 and the walking wheel 300.

[0045] In the embodiment, the horizontal section of the transmission block 420 is a rhombus, and the long side of the rhombus is along the first direction, and the short side of the rhombus is along the axial direction of the transmission shaft 430. In some other embodiments, the horizontal section of the transmission block 420 can also be a shuttle-shaped with wide middle and narrow ends.

[0046] In the embodiment, the shell 200 is provided with a hopper 240, the hopper 240 is used for storing paint, and the hopper 240 is communicated with the nozzle 230. In some other embodiments, the hopper 240 and the nozzle 230 can also be communicated through a hose, and in use, the hopper 240 is moved with the shell 200 to reduce the load of the shell 200.

[0047] The building site planning marking equipment of the application, in use, the operator holds the hand push rod 100 to assist the shell 200 to advance, because the walking wheel 300 is driven to rotate by the driving part 210, and then drives the shell 200 to advance, the speed of manually pushing the shell 200 to move needs to be as far as possible compatible with the speed of the shell 200 advancing driven by the walking wheel 300. In the initial state, the connecting shaft 220 is under the action of the first elastic part 222, and the transmission block 420 is fitted with the installation groove opened at the opposite end of the two transmission shafts 430 through the connecting rod 410. When the walking wheel 300 rotates at the same speed to drive the shell 200 to advance in the first direction, the operator moves the shell 200 in the first direction by the hand push rod 100, and when the operator pushes the hand push rod 100 to produce a momentary forward (the front side of the shell 200 advancing direction, that is, the front side in the first direction), the connecting shaft 220 drives the transmission block 420 to move forward relative to the transmission shaft 430 through the connecting rod 410, because the width of the middle part of the transmission block 420 in the first direction is greater than that of the two ends, the transmission block 420 will push the two transmission shafts 430 away from each other when moving forward relative to the transmission shaft 430, and then push the thimble 320 to extend out. When the two walking wheels 300 rotate at different speeds to drive the shell 200 to move along the arc-shaped track, if the operator pushes the hand push rod 100 to produce a rotation greater than the current rotation amplitude of the shell 200, the connecting shaft 220 drives the transmission block 420 to rotate relative to the transmission shaft 430 through the connecting rod 410, because the width of the transmission block 420 in the axial direction of the transmission shaft 430 is less than the length in the first direction, the transmission block 420 will also push the two transmission shafts 430 away from each other when rotating relative to the transmission shaft 430, and then push the thimble 320 to extend out. The thimble 320 moves to extend out and is flush with the outer periphery of the walking wheel 300, which increases the moving resistance of the walking wheel 300, avoids the shell 200 from deviating too much under the misoperation of the operator, and provides feedback when the operator feels the change of the moving resistance of the walking wheel 300, so as to timely adjust the speed or angle of pushing the hand push rod 100, and then reduce the influence on the movement of the shell 200, and improve the accuracy of the marking line.

[0048] The above only describes the preferred embodiments of the application and is not intended to limit the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A construction site planning marker device, characterized by: The hand push rod, the shell and the walking wheels are included. The two walking wheels are coaxial and spaced apart, the shell is located between the two walking wheels, the rotation shafts of the two walking wheels are horizontally and rotatably installed on the shell, and the two walking wheels are driven to rotate by two driving members installed in the shell. One end of the hand push rod is rotatably installed on the shell and used for pushing the shell to move. A plurality of push pins are arranged in the walking wheel along the circumferential direction of the walking wheel, the push pins extend along the radial direction of the walking wheel and can move along the radial direction of the walking wheel. The trigger assembly is arranged between the hand push rod and the walking wheel, and when the moving speed of the hand push rod and the moving speed of the walking wheel do not match, the trigger assembly moves the push pins to be flush with the outer circumferential surface of the walking wheel, increases the moving resistance of the walking wheel, and reminds the operator to control the moving speed of the hand push rod.

2. A construction site planning marker apparatus according to claim 1, wherein: The horizontal direction perpendicular to the rotation shaft of the walking wheel is the first direction.

3. A construction site planning marker device according to claim 1, wherein: The shell is installed with a connecting shaft, the connecting shaft can move in the shell along the first direction and can rotate around a vertical axis.

4. A construction site planning marker apparatus according to claim 1, wherein: One end of the hand push rod is axially hinged to the connecting shaft around the connecting shaft.

5. A construction site planning marker apparatus according to claim 1, wherein: The trigger assembly includes a connecting rod, a transmission block and two transmission shafts.

6. A construction site planning marker apparatus according to claim 1, wherein: The two transmission shafts are coaxial with the rotation shafts of the two walking wheels, and each transmission shaft is slidingly installed in one rotation shaft.

7. A construction site planning marker apparatus according to claim 1, wherein: The opposite ends of the two transmission shafts are provided with installation grooves matched with the transmission block. The transmission block is connected to the connecting shaft through the connecting rod and is installed in the installation grooves between the two transmission shafts. The width of the transmission block in the axial direction of the transmission shaft is less than the length of the transmission block in the first direction. The horizontal section of the transmission block is a rhombus, and the long side of the rhombus is along the first direction, and the short side of the rhombus is along the axial direction of the transmission shaft. The two ends of the connecting shaft are respectively provided with a sliding block, and the two sliding blocks are slidingly installed in the shell along the first direction and are provided with a first elastic member along the first direction between the shell and the sliding block. A vertical hinge shaft is rotatably installed in the sliding block, the end of the connecting shaft passes through the sliding block, and the end of the connecting shaft is provided with a vertical long hole penetrating through the vertical direction, the hinge shaft passes through the long hole, and the length of the long hole in the axial direction of the connecting shaft is greater than the diameter of the hinge shaft. The first elastic member has four, and two pairs of one group, the two first elastic members of the same group are located on the two sides of one sliding block in the first direction, and are respectively connected to the shell and the sliding block. The walking wheel is provided with a containing groove for containing the end of the transmission shaft, and the ends of the two transmission shafts away from each other are respectively located in the containing grooves in the corresponding walking wheels. The outer circumferential surface of the end of the transmission shaft is a curved surface and abuts against the end of the push pin close to the center of the walking wheel. The push pin and the walking wheel are connected by a second elastic member, and the second elastic member promotes the push pin to retract into the walking wheel. The driving member is a motor, the output shaft of the motor is parallel to the rotation shaft of the walking wheel, and the rotation shaft of the walking wheel is driven to rotate by a set of gears. The plurality of push pins are located in the middle of the axial direction of the walking wheel. The shell is provided with a hopper for storing paint, and the hopper is communicated with the nozzle. The rotation shaft of the transmission wheel is rotatably connected to the shell through a bearing.

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