Road construction marking equipment

Abstract

The present invention relates to the technical field of road marking equipment, and specifically to a road construction marking equipment, comprising a trolley, a support assembly, an elastic clamp ring, a paint can and a power assembly, wherein the trolley comprises a lower support column, an upper support column, a support handrail, a plurality of rotating rings and a plurality of wheel components, and the axes of the lower support column and the upper support column are horizontal. The present invention is provided with a trolley, a support assembly and a paint can, and when a wheel body of the trolley rolls into a pothole on a construction road surface, although the wheel body is no longer supported by the road surface, the lower support column is only subjected to the pressure from the wheel body rolling into the pothole, and the overall pressure on the lower support column is very small, and the lower support column will not rotate around its axis, and the paint can is fixed on the lower support column by an elastic clamp ring, so the nozzle angle of the paint can will not change, and the position where the paint is sprayed will not be affected by the pothole, and the paint can still be used to mark on the construction road surface according to a preset trajectory.

Description

Technical Field

[0001] The invention relates to the technical field of road marking equipment, and in particular to a road construction marking equipment. Background Art

[0002] During road construction, marking is an important measure to ensure traffic safety, guide traffic flow and provide clear instructions. During road construction, temporary lanes and detours can be set up by marking to guide vehicles away from the construction area and reduce the impact on normal traffic.

[0003] Most of the existing road construction marking equipment is a two-wheeled or four-wheeled hand-held cart equipped with an inverted paint can. The spray nozzle of the paint can is opened automatically or manually during the movement of the cart, so as to draw the required construction marking line on the road surface. However, there are often several potholes on the unfinished road surface. When one of the wheels of the cart rolls into the pothole, the body of the cart will tilt as a whole. Since the paint can is fixed on the cart, the spray angle of the spray nozzle of the paint can will be skewed, causing the guide line drawn by the sprayed paint to deviate from the preset trajectory. Summary of the invention

[0004] Based on this, it is necessary to provide a road construction marking equipment to address the problems existing in the current road construction marking equipment, so as to solve the problem that when one of the wheels of the car rolls into a pothole, the entire body of the car will tilt, causing the guide line drawn by the paint sprayed from the nozzle of the paint tank to deviate from the preset trajectory.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A road construction marking device comprises:

[0007] The trolley comprises a lower support column, an upper support column, a support handrail, a plurality of rotating rings and a plurality of wheel components, the axes of the lower support column and the upper support column are horizontal, and the upper support column is located above the lower support column, the right end of the upper support column is fixedly connected to the upper end of the support handrail, the support handrail can rotate synchronously with the lower support column around the axis of the lower support column, the plurality of rotating rings are sequentially rotated along the axis of the lower support column and sleeved on the outside of the lower support column, the plurality of wheel components correspond to the plurality of rotating rings one by one, and the plurality of wheel components are alternately arranged on the outside of the corresponding rotating rings left and right;

[0008] The wheel component includes a wheel sleeve, a wheel axle and a wheel body. The wheel sleeve is arranged outside the rotating ring, the wheel axle is rotatably connected to the wheel sleeve, and one end of the wheel axle away from the wheel sleeve is coaxially fixedly connected to the wheel body.

[0009] A support assembly, the support assembly is arranged outside the wheel sleeve, and the support assembly is configured so that when the axis of the wheel sleeve is horizontal, one end of the support assembly away from the wheel sleeve abuts against the upper support column, and the support assembly is further configured so that when the axis of the wheel sleeve is tilted downward, one end of the support assembly away from the wheel sleeve is disengaged from the abutment with the upper support column;

[0010] An elastic snap ring, the elastic snap ring is arranged at the front part of the lower support column;

[0011] Paint can, the paint can is clamped in an elastic clamp ring, and the spray port of the paint can is perpendicular to the construction road surface;

[0012] The power assembly is also arranged at the front part of the lower support column, and the power assembly is used to control the opening or closing of the nozzle of the paint can.

[0013] In one embodiment, the support assembly includes an intermediate support rod and a semi-ring block, there are multiple intermediate support rods, the multiple intermediate support rods correspond to the multiple wheel sleeves one by one, one end of the intermediate support rod is arranged outside the wheel sleeve, the axis of the intermediate support rod is arranged at an angle with the axis of the wheel sleeve, there are multiple semi-ring blocks, the multiple semi-ring blocks correspond to the multiple intermediate support rods one by one, the opening of the semi-ring block faces the upper support column, and the non-opening side of the semi-ring block is fixedly connected to one end of the intermediate support rod away from the wheel sleeve;

[0014] When the axis of the wheel sleeve is horizontal, the semi-ring block abuts against the upper support column coaxially.

[0015] In one of the embodiments, an axial limit assembly is provided between the upper support column and the semi-ring block, and the axial limit assembly is used to limit the semi-ring block from sliding along the axis of the sand roller support column.

[0016] In one embodiment, the axial limit assembly includes a limit block and a limit slot, the limit block is arranged outside the upper support column, the limit slot is opened on the inner side of the opening of the semi-ring block, and the limit block is adapted to the limit slot.

[0017] In one of the embodiments, the left end of the upper support column is fixedly connected to a side support frame, and the lower end of the side support frame is rotatably connected to the left end of the lower support column.

[0018] In one of the embodiments, a first elastic member is provided between the lower support column and the rotating ring, and when the axis of the wheel sleeve rotates to tilt downward, the first elastic member is in a compressed state.

[0019] In one embodiment, an elastic limiting assembly is provided between the lower supporting column and the upper supporting column, and the elastic limiting assembly is used to limit the rotation of the lower supporting column relative to the upper supporting column;

[0020] The elastic limiting assembly is configured to limit the rotation of the lower supporting column relative to the upper supporting column when the sum of the elastic torques applied to the lower supporting column is less than a first preset value.

[0021] In one embodiment, the elastic limit assembly includes a stop block and a stop lever, the stop block is elastically connected to the right end of the upper support column, and the stop block can slide along the axis of the upper support column, and the stop lever is fixedly connected to the right end of the lower support column;

[0022] When the sum of the elastic torques applied to the lower support column is less than a first preset value, the stopping lever is stopped by the stopping block, thereby limiting the rotation of the lower support column relative to the upper support column.

[0023] In one embodiment, the power assembly includes an air pump and an inert gas storage tank, both of which are arranged on the lower support column, the input end of the air pump is connected to the outlet of the inert gas storage tank, and the output end of the air pump is inserted into the bottom of the paint tank and connected to the interior of the paint tank;

[0024] When the air pump fills the paint tank with inert gas, the air pressure inside the paint tank increases, so that the nozzle of the paint tank opens, and the paint used for marking is sprayed out from the nozzle.

[0025] In one embodiment, the diameter of the inner ring groove of the elastic snap ring is matched with the diameter of the paint pot, and the circumference of the inner ring groove is slightly larger than the circumference of half a circular arc.

[0026] The beneficial effects of the present invention are:

[0027] The present invention is provided with a trolley, a support assembly and a paint can. When one wheel body of the trolley rolls into a pothole on the construction road surface, the wheel body is no longer supported by the road surface, and the wheel sleeve corresponding to the wheel body and the axis of the rotating ring around the lower support column rotate downward, but the remaining wheel body is still in rolling contact with the construction road surface. Therefore, the lower support column is only subjected to the pressure from the wheel body rolling into the pothole, and the overall pressure on the lower support column is very small. The staff can still easily push the support handrail to move horizontally along the construction road surface and keep holding the support handrail fixedly. Therefore, the lower support column will not rotate around its axis, and the paint can is fixed on the lower support column by an elastic clamp ring, so the nozzle angle of the paint can will not change, the position where the paint is sprayed will not be affected by the potholes, and the paint can still be used to mark lines on the construction road surface according to a preset trajectory. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an overall schematic diagram of a road construction marking device of the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram of the enlarged structure in the middle;

[0030] Figure 3 This is a top view of a road construction marking device of the present invention;

[0031] Figure 4 for Figure 3 Middle BB section view;

[0032] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at C in the middle;

[0033] Figure 6 It is a schematic diagram of the working state of a wheel sleeve in a road construction marking device of the present invention;

[0034] Figure 7 It is a structural schematic diagram of a limit card slot in a road construction marking device of the present invention;

[0035] Figure 8 It is a half-section axonometric view of DD in a road construction marking device according to the present invention.

[0036] in:

[0037] 100, trolley; 110, lower support column; 120, upper support column; 130, support handrail; 140, rotating ring; 150, wheel component; 151, wheel sleeve; 152, wheel axle; 153, wheel body; 160, first elastic member;

[0038] 200, support assembly; 210, middle support rod; 220, half ring block; 230, side support frame;

[0039] 300, elastic snap ring; 310, inner ring groove;

[0040] 400, paint can;

[0041] 500, axial limit assembly; 510, limit clamp block; 520, limit clamp slot;

[0042] 600, elastic limiting assembly; 610, stopping block; 620, stopping lever; 630, second elastic member. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] like Figure 1-Figure 8As shown, a road construction marking equipment includes a trolley 100, a support assembly 200, an elastic snap ring 300, a paint tank 400 and a power assembly. The trolley 100 includes a lower support column 110, an upper support column 120, a support handrail 130, a plurality of rotating rings 140 and a plurality of wheel components 150. The axes of the lower support column 110 and the upper support column 120 are horizontal, and the upper support column 120 is located above the lower support column 110. The right end of the upper support column 120 is fixedly connected to the upper end of the support handrail 130. The support handrail 130 can rotate synchronously with the lower support column 110 around the axis of the lower support column 110. The plurality of rotating rings 140 are rotatably sleeved on the outside of the lower support column 110 in sequence along the axis of the lower support column 110. The plurality of wheel components 150 correspond to the plurality of rotating rings 140 one by one, and the plurality of wheel components 150 are alternately arranged on the outside of the corresponding rotating rings 140. The wheel component 150 includes a wheel sleeve 151, axle 152 and wheel body 153, the wheel sleeve 151 is arranged outside the rotating ring 140, the axle 152 is rotatably connected with the wheel sleeve 151, and one end of the axle 152 away from the wheel sleeve 151 is coaxially fixedly connected with the wheel body 153, and the support assembly 200 is arranged outside the wheel sleeve 151, and the support assembly 200 is configured so that when the axis of the wheel sleeve 151 is horizontal, one end of the support assembly 200 away from the wheel sleeve 151 abuts against the upper support column 120, and the support The component 200 is also configured so that when the axis of the wheel sleeve 151 tilts downward, the end of the support component 200 away from the wheel sleeve 151 is disengaged from the upper support column 120, the elastic snap ring 300 is arranged at the front of the lower support column 110, the paint can 400 is clamped in the elastic snap ring 300, the nozzle of the paint can 400 is perpendicular to the construction road surface, and the power component is also arranged at the front of the lower support column 110, and the power component is used to control the nozzle of the paint can 400 to open or close.

[0047] When in use, the worker moves the road construction marking device to the road construction area to be marked, and then pushes the support handrail 130 horizontally by hand, so that the multiple wheel bodies 153 move according to the preset marking trajectory. At the same time, the power component is started, and the power component controls the nozzle of the paint tank 400 to open, and the paint sprayed from the nozzle marks the construction road surface according to the preset trajectory. When the construction road surface is flat, the wheel bodies 153 are in rolling contact with the construction road surface, and the axis of the wheel body 153 remains horizontal, so the front and rear forces of the lower support column 110 are balanced and the downward pressure on the lower support column 110 from the rotating ring 140 can be basically ignored. Ignoring this, the staff can easily push the support handrail 130 to move horizontally along the construction road surface, and the support handrail 130 drives the lower support column 110 to move horizontally along the construction road surface synchronously. In addition, since the support handrail 130 can rotate synchronously with the lower support column 110 around the axis of the lower support column 110, and the support handrail 130 is fixedly held by the staff at this time, the lower support column 110 will not rotate around the axis of the lower support column 110 at this time. In addition, since the paint can 400 is fixed to the lower support column 110 by an elastic clamp 300, the nozzle of the paint can 400 faces downward and the spraying angle will not change.

[0048] When one of the wheels 153 of the trolley 100 rolls into a pothole on the construction road surface, the wheel 153 is no longer supported by the road surface, and the wheel sleeve 151 corresponding to the wheel 153 and the rotating ring 140 rotate downward around the axis of the lower support column 110, but the remaining wheel 153 is still in rolling contact with the construction road surface. Therefore, the lower support column 110 is only subjected to the pressure from the wheel 153 that rolls into the pothole, and the overall pressure on the lower support column 110 is very small. The staff can still easily push the support handrail 130 to move horizontally along the construction road surface and keep holding the support handrail 130 fixedly. Therefore, the lower support column 110 will not rotate around its axis, and the paint can 400 is fixed to the lower support column 110 by an elastic clamp 300. When the lower support column 110 does not rotate around its axis, the nozzle angle of the paint can 400 will not change, and the position where the paint is sprayed will not be affected by the potholes, and lines can still be drawn on the construction road surface according to the preset trajectory.

[0049] In a further embodiment, Figure 1 and Figure 2As shown, the support assembly 200 includes an intermediate support rod 210 and a semi-ring block 220. There are multiple intermediate support rods 210, and the multiple intermediate support rods 210 correspond one-to-one to the multiple wheel sleeves 151. One end of the intermediate support rod 210 is arranged outside the wheel sleeve 151, and the axis of the intermediate support rod 210 is arranged at an angle to the axis of the wheel sleeve 151. There are multiple semi-ring blocks 220, and the multiple semi-ring blocks 220 correspond one-to-one to the multiple intermediate support rods 210. The opening of the semi-ring block 220 faces the upper support column 120, and the non-opening side of the semi-ring block 220 is fixedly connected to one end of the intermediate support rod 210 away from the wheel sleeve 151. When the axis of the wheel sleeve 151 is horizontal, the semi-ring block 220 is coaxially abutted against the upper support column 120.

[0050] When the wheel body 153 has not rolled into the pothole, the wheel body 153 is in rolling contact with the horizontal construction road surface. At this time, the axis of the wheel sleeve 151 is horizontal, and the semi-ring block 220 is coaxially abutted with the upper support column 120. Therefore, the wheel sleeve 151 cannot rotate upward around the axis of the lower support column 110. At this time, the staff can easily push the support handrail 130 to move horizontally along the construction road surface without having to bear the gravity from the rotating ring 140 and the wheel component 150, which can provide convenience for the staff to operate the road construction marking equipment and reduce labor intensity.

[0051] In a further embodiment, Figure 6 and Figure 7 As shown, an axial limit assembly 500 is provided between the upper support column 120 and the semi-ring block 220 , and the axial limit assembly 500 is used to limit the semi-ring block 220 from sliding along the axis of the sand roller support column.

[0052] The axial limiting assembly 500 is provided to limit the axial movement of the half ring block 220 along the axis of the upper support column 120 and to limit the axial movement of the rotating ring 140 along the axis of the lower support column 110 .

[0053] In a further embodiment, Figure 6 and Figure 7 As shown, the axial limiting assembly 500 includes a limiting block 510 and a limiting slot 520 . The limiting block 510 is arranged outside the upper support column 120 , and the limiting slot 520 is opened on the inner side of the opening of the semi-ring block 220 . The limiting block 510 is adapted to the limiting slot 520 .

[0054] When the axis of the wheel sleeve 151 is horizontal, the semi-ring block 220 is coaxially abutted against the upper support column 120, and the limit block 510 is clamped in the limit groove 520, so the semi-ring block 220 will not move axially relative to the upper support column 120; at the same time, the semi-ring block 220 is fixedly connected to the rotating ring 140 through the intermediate support rod 210 and the wheel sleeve 151, so the rotating ring 140 will not move axially along the axis of the lower support column 110, thereby achieving the effect of axial limitation.

[0055] When one of the wheels 153 rolls into a pothole, the semi-ring block 220 corresponding to the wheel body 153 disengages from the abutment with the upper support column 120. However, the rotating ring 140 corresponding to the remaining wheel body 153 located on the horizontal road surface will not move along the axis of the lower support column 110. Therefore, the rotating ring 140 corresponding to the wheel body 153 that rolls into the pothole is limited by other rotating rings 140. Therefore, the rotating ring 140 will not move along the axis of the lower support column 110. The rotating ring 140 is fixedly connected to the corresponding semi-ring block 220 through the wheel sleeve 151 and the intermediate support rod 210. Therefore, the corresponding semi-ring block 220 will not move along the axis of the upper support column 120, thereby achieving the effect of axial limitation.

[0056] In a further embodiment, Figure 1 and Figure 2 As shown, the left end of the upper support column 120 is fixedly connected to the side support frame 230, and the lower end of the side support frame 230 is rotatably connected to the left end of the lower support column 110.

[0057] The side support frame 230 is provided to support the left end of the upper support column 120 to prevent the upper support column 120 from bending due to the cantilever effect.

[0058] In a further embodiment, Figure 4 As shown, a first elastic member 160 is provided between the lower support column 110 and the rotating ring 140. The first elastic member 160 can specifically be a torsion spring. Specifically, a mounting arc groove is opened on the inner circumferential wall of the rotating ring 140, and a stop block is provided on the outer circumferential surface of the lower support column 110. The stop block is slidably matched with the mounting arc groove, and one end of the torsion spring is provided at one end of the mounting arc groove, and the other end of the torsion spring is fixedly connected to the stop block. When the axis of the wheel sleeve 151 rotates to tilt downward, the first elastic member 160 is in a compressed state.

[0059] The first elastic member 160 is provided to connect the lower support column 110 and the rotating ring 140. When one of the wheel bodies 153 rolls into the pothole, the wheel body 153 no longer contacts the construction road surface. At this time, the wheel component 150 rotates downward around the axis of the lower support column 110 together with the rotating ring 140 under the action of its own gravity, so that the rotating ring 140 rotates relative to the lower support column 110. At this time, the first elastic member 160 is compressed. At the same time, the compression of the first elastic member 160 also increases the elastic supporting force of the first elastic member 160 on the wheel component 150 accordingly. When the elastic supporting force of the first elastic member 160 on the wheel component 150 is sufficient to overcome the gravity of the wheel component 150, the wheel component 150 and the rotating ring 140 no longer rotate downward around the axis of the lower support column 110. In this way, the angle of the wheel component 150 rotating downward around the lower support column 110 can be reduced, thereby preventing the wheel body 153 from being stuck in the pothole and unable to move out quickly when the pothole is deep. In addition, the first elastic member 160 can also provide a rebound force when the wheel component 150 rotates in the reverse direction to reset, so that the wheel component 150 can rebound and reset quickly.

[0060] In a further embodiment, Figure 3 and Figure 5 As shown, an elastic limit assembly 600 is provided between the lower support column 110 and the upper support column 120, and the elastic limit assembly 600 is used to limit the rotation of the lower support column 110 relative to the upper support column 120, and the elastic limit assembly 600 is configured to limit the rotation of the lower support column 110 relative to the upper support column 120 when the sum of the elastic torques applied to the lower support column 110 is less than a first preset value, and the elastic limit assembly 600 is also configured to cancel the restriction on the rotation of the lower support column 110 relative to the upper support column 120 when the sum of the elastic torques applied to the lower support column 110 is greater than or equal to the first preset value.

[0061] When only one wheel body 153 or a small number of wheel bodies 153 roll into the pothole at the same time, it means that the area of ​​the pothole is relatively small. At this time, the sum of the elastic torques of the first elastic member 160 corresponding to the above-mentioned wheel bodies 153 on the lower support column 110 is less than the first preset value. At this time, the lower support column 110 will not rotate relative to the upper support column 120. When the upper support column 120 remains horizontal, the lower support column 110 will not rotate either. In this way, the nozzle of the paint tank 400 will not deflect and will remain perpendicular to the construction road surface.

[0062] When multiple wheel bodies 153 roll into the pothole at the same time, it means that the area of ​​the pothole is relatively large. At this time, the sum of the elastic torques of the first elastic members 160 corresponding to the above-mentioned wheel bodies 153 on the lower support column 110 is greater than or equal to the first preset value. Therefore, the elastic limit assembly 600 no longer restricts the rotation of the lower support column 110 relative to the upper support column 120. As a result, the lower support column 110 rotates around the axis of the lower support column 110 by a certain angle under the elastic force of the first elastic member 160. At this time, the nozzle of the paint tank 400 is inclined to the construction road surface, so the width of the marking line drawn by the paint sprayed from the nozzle will be wider. Although the marking line will deviate from the preset trajectory at this time, it is more eye-catching, which helps construction workers or passers-by to observe in advance that there is a large pothole here. In addition, even if the pothole area expands or shrinks, it is not easy for the marking line to disappear completely, and it can still be observed by construction workers or passers-by.

[0063] In a further embodiment, Figure 3 and Figure 5 As shown, the elastic limit assembly 600 includes a stop block 610 and a stop lever 620. The stop block 610 is elastically connected to the right end of the upper support column 120, and the stop block 610 can slide along the axis of the upper support column 120. Specifically, an annular groove is opened at the right end of the upper support column 120, one end of the stop block 610 is slidably connected in the annular groove, and the bottom of the annular groove and the stop block 610 are connected by a second elastic member 630. The stop lever 620 is fixedly connected to the right end of the lower support column 110. When the sum of the elastic torques applied to the lower support column 110 is less than a first preset value, the stop lever 620 is stopped by the stop block 610, thereby limiting the rotation of the lower support column 110 relative to the upper support column 120.

[0064] When only one wheel body 153 or a small number of wheel bodies 153 roll into the pothole at the same time, it means that the area of ​​the pothole is relatively small. At this time, the sum of the elastic torques of the first elastic member 160 corresponding to the above-mentioned wheel bodies 153 on the lower support column 110 is less than the first preset value. At this time, the stopping lever 620 cannot overcome the elastic force of the second elastic member 630 and is disengaged from being stopped by the stopping block 610. The lower support column 110 and the upper support column 120 will not rotate relative to each other at this time, and the lower support column 110 and the upper support column 120 will remain horizontal. Therefore, the nozzle of the paint tank 400 will not deflect and will remain perpendicular to the construction road surface.

[0065] When multiple wheel bodies 153 roll into a pothole at the same time, it means that the area of ​​the pothole is relatively large. At this time, the sum of the elastic torques of the first elastic member 160 corresponding to the above-mentioned wheel bodies 153 on the lower support column 110 is greater than or equal to the first preset value. Therefore, the stop lever 620 overcomes the elastic force of the second elastic member 630 and disengages from the stop block 610. Then, the lower support column 110 rotates around the axis of the lower support column 110 at a certain angle under the elastic force of the first elastic member 160. At this time, the nozzle of the paint tank 400 is inclined to the construction road surface, so the width of the marking line drawn by the paint sprayed from the nozzle will be wider. Although the marking line will deviate from the preset trajectory at this time, it is more eye-catching, which helps construction workers or passers-by to observe in advance that there is a large pothole here. In addition, even if the pothole area expands or shrinks, it is not easy for the marking line to disappear completely, and it can still be observed by construction workers or passers-by.

[0066] In a further embodiment, the power assembly includes an air pump and an inert gas storage tank, both of which are arranged on the lower support column 110, the input end of the air pump is connected to the outlet of the inert gas storage tank, and the output end of the air pump is inserted into the bottom of the paint tank 400 and connected to the interior of the paint tank 400. When the air pump fills the paint tank 400 with inert gas, the air pressure inside the paint tank 400 increases, so that the nozzle of the paint tank 400 opens, and the paint used for marking is sprayed out from the nozzle.

[0067] It should also be noted that the nozzle of the existing paint can 400 is usually equipped with a pressure valve. When the pressure inside the paint can 400 is greater than the set pressure of the pressure valve, the nozzle of the paint can 400 opens and the paint inside the paint can 400 is sprayed out through the nozzle.

[0068] When the worker pushes the cart 100 on the construction road, the air pump is started, and the air pump fills the inert gas in the inert gas storage tank into the paint tank 400, so that the air pressure inside the paint tank 400 increases. When the air pressure inside the paint tank 400 increases to a pressure greater than the pressure of the nozzle pressure valve of the paint tank 400, the nozzle of the paint tank 400 opens, and the paint inside the paint tank 400 is sprayed out through the nozzle.

[0069] In a further embodiment, Figure 1 As shown, the diameter of the inner ring groove 310 of the elastic snap ring 300 matches the diameter of the paint pot 400, and the circumference of the inner ring groove 310 is slightly larger than the circumference of half a circular arc.

[0070] This configuration is to increase the clamping stability of the paint pot 400 , thereby fixing the paint pot 400 more firmly in the inner annular groove 310 .

[0071] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A road construction marking equipment, characterized in that: include: The trolley comprises a lower support column, an upper support column, a support handrail, a plurality of rotating rings and a plurality of wheel components, the axes of the lower support column and the upper support column are horizontal, and the upper support column is located above the lower support column, the right end of the upper support column is fixedly connected to the upper end of the support handrail, the support handrail can rotate synchronously with the lower support column around the axis of the lower support column, the plurality of rotating rings are sequentially rotated along the axis of the lower support column and sleeved on the outside of the lower support column, the plurality of wheel components correspond to the plurality of rotating rings one by one, and the plurality of wheel components are alternately arranged on the outside of the corresponding rotating rings left and right; The wheel component includes a wheel sleeve, a wheel axle and a wheel body. The wheel sleeve is arranged outside the rotating ring, the wheel axle is rotatably connected to the wheel sleeve, and one end of the wheel axle away from the wheel sleeve is coaxially fixedly connected to the wheel body. A support assembly, the support assembly is arranged outside the wheel sleeve, and the support assembly is configured so that when the axis of the wheel sleeve is horizontal, one end of the support assembly away from the wheel sleeve abuts against the upper support column, and the support assembly is further configured so that when the axis of the wheel sleeve is tilted downward, one end of the support assembly away from the wheel sleeve is disengaged from the abutment with the upper support column; An elastic snap ring, the elastic snap ring is arranged at the front part of the lower support column; Paint can, the paint can is clamped in an elastic clamp ring, and the spray port of the paint can is perpendicular to the construction road surface; A power assembly is arranged at the front of the lower support column, and is used to control the opening or closing of the nozzle of the paint can; An elastic limit assembly is provided between the lower support column and the upper support column. The elastic limit assembly is configured to limit the rotation of the lower support column relative to the upper support column when the sum of the elastic torques applied to the lower support column is less than a first preset value; when multiple wheels roll into the pothole at the same time and the elastic torque applied to the lower support column is greater than the first preset value, the lower support column will rotate around the axis of the lower support column by a certain angle, the nozzle of the paint tank will be inclined toward the construction road surface, and the width of the marking line drawn by the paint sprayed from the nozzle will become wider.

2. A road construction marking equipment according to claim 1, characterized in that: The support assembly includes an intermediate support rod and a semi-ring block, wherein there are multiple intermediate support rods, and the multiple intermediate support rods correspond to the multiple wheel sleeves one by one, one end of the intermediate support rod is arranged outside the wheel sleeve, and the axis of the intermediate support rod is arranged at an angle with the axis of the wheel sleeve, and there are multiple semi-ring blocks, and the multiple semi-ring blocks correspond to the multiple intermediate support rods one by one, the opening of the semi-ring block faces the upper support column, and the non-opening side of the semi-ring block is fixedly connected to one end of the intermediate support rod away from the wheel sleeve; When the axis of the wheel sleeve is horizontal, the semi-ring block abuts against the upper support column coaxially.

3. A road construction marking equipment according to claim 2, characterized in that: An axial limiting assembly is provided between the upper support column and the semi-ring block, and the axial limiting assembly is used to limit the semi-ring block from sliding along the axis of the sand roller support column.

4. A road construction marking equipment according to claim 3, characterized in that: The axial limiting assembly comprises a limiting block and a limiting slot. The limiting block is arranged outside the upper support column, and the limiting slot is arranged inside the opening of the semi-ring block. The limiting block is adapted to the limiting slot.

5. A road construction marking equipment according to claim 1, characterized in that: The left end of the upper support column is fixedly connected with a side support frame, and the lower end of the side support frame is rotatably connected to the left end of the lower support column.

6. A road construction marking equipment according to claim 1, characterized in that: A first elastic member is provided between the lower support column and the rotating ring. When the axis of the wheel sleeve rotates to tilt downward, the first elastic member is in a compressed state.

7. A road construction marking equipment according to claim 1, characterized in that: The elastic limit assembly includes a stop block and a stop lever, wherein the stop block is elastically connected to the right end of the upper support column and can slide along the axis of the upper support column, and the stop lever is fixedly connected to the right end of the lower support column; When the sum of the elastic torques applied to the lower support column is less than a first preset value, the stopping lever is stopped by the stopping block, thereby limiting the rotation of the lower support column relative to the upper support column.

8. A road construction marking equipment according to claim 1, characterized in that: The power assembly includes an air pump and an inert gas storage tank, both of which are arranged on the lower support column, the input end of the air pump is connected to the outlet of the inert gas storage tank, and the output end of the air pump is inserted into the bottom of the paint tank and connected to the inside of the paint tank; When the air pump fills the paint tank with inert gas, the air pressure inside the paint tank increases, so that the nozzle of the paint tank opens, and the paint used for marking is sprayed out from the nozzle.

9. A road construction marking equipment according to claim 1, characterized in that: The diameter of the inner ring groove of the elastic snap ring matches the diameter of the paint pot, and the circumference of the inner ring groove is slightly larger than the circumference of half a circular arc.

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