A dotting device for road and bridge construction

Abstract

The utility model relates to road and bridge construction equipment technical field discloses a kind of dotting devices for road and bridge construction, including fixed frame, dotting mechanism being installed in the inside of fixed frame and push mechanism being installed in the bottom of fixed frame, fixed wheel is installed in the bottom front side of push mechanism, universal wheel is installed in rear side, the dotting mechanism is installed on the support frame that can rotate around axle, support frame is locked and fixed by bolt, the dotting mechanism is driven adjusting rod and connecting rod by hydraulic push rod, drives pressure rod to slide up and down in limiting cylinder and realizes dotting. The utility model solves the problem that the prior art dotting device moves inconveniently, steering is difficult and dotting precision is not high, with the beneficial effects of flexible movement, convenient operation, dotting fast and accurate.

Description

Technical Field

[0001] This utility model relates to the field of road and bridge construction equipment technology, and in particular to a dotting device for road and bridge construction. Background Technology

[0002] In the construction of roads and bridges, accurate surveying and marking are fundamental to ensuring project quality. Marking devices, as key equipment for ground point marking, directly affect the efficiency and accuracy of construction.

[0003] The existing dotting devices have a relatively simple structural design and usually rely on manual pushing and positioning. In the vast construction site with complex road conditions, moving such devices is very laborious, especially when adjusting the direction. Operators need to move the entire device or make large-scale turning operations, which not only reduces work efficiency but also increases the labor intensity of operators.

[0004] In addition, the existing marking mechanism has shortcomings in direction adjustment. The adjustment structure is usually not stable enough and lacks a reliable locking mechanism. Under the influence of device movement or working vibration, the adjusted marking direction will deviate, resulting in deviation of the marking position. At the same time, the guide structure of the marking execution component is not precise enough, and it will shake when it hits the ground, which further affects the accuracy of marking and cannot meet the requirements of modern bridge and road construction for high-precision and high-efficiency operation.

[0005] Therefore, this utility model proposes a marking device for road and bridge construction to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems of inconvenient movement and turning leading to low work efficiency, and difficulty in adjusting the marking direction and unstable locking leading to low marking accuracy in the existing road and bridge construction marking device, this utility model aims to provide a road and bridge construction marking device with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a marking device for road and bridge construction, including: a fixing frame, a marking mechanism and a pushing mechanism.

[0008] The dotting mechanism includes a hydraulic push rod, a support frame, a limiting cylinder, bolts, an adjusting rod, a pressure rod, and a connecting rod; the pushing mechanism includes a fixed plate, a limiting plate, a buffer rod, a limiting rod, a caster wheel, and a fixed wheel.

[0009] Furthermore, the hydraulic push rod is connected to the front of the inside of the fixed frame via a rotating shaft. The output end of the hydraulic push rod is connected to the middle of the adjusting rod, and the top end of the adjusting rod is connected to one side of the support frame via a rotating shaft. The connecting rod connects the middle of the adjusting rod to the side of the pressure rod. The pressure rod slides vertically inside the limiting cylinder, which is fixedly connected to the bottom of the support frame. The support frame is connected to the inside of the fixed frame via a rotating shaft, and bolts are threadedly connected to the bottom of the support frame to fix its position. The fixing plate is fixedly connected to the bottom of the fixed frame. A set of fixed wheels is installed on the front side of the fixing plate, and a set of omnidirectional wheels is installed on the rear side of the fixing plate.

[0010] Preferably, the hydraulic push rod is a double-acting hydraulic push rod.

[0011] Preferably, the lower end of the pressure rod is provided with a tapered dotting head.

[0012] Preferably, the power source of the hydraulic push rod is an external hydraulic power unit.

[0013] Preferably, a limiting rod is installed on the front and rear sides of the top of the fixed plate, and the limiting plate slides inside the limiting rod.

[0014] Preferably, a buffer rod is connected between the limiting plate and the fixing plate, and the buffer rod is a spring rod structure.

[0015] Preferably, a limiting structure is provided at the pivot connection between the support frame and the fixed frame, and the bolt is used to lock the limiting structure.

[0016] Preferably, the connecting rod connects the adjusting rod and the pressure rod via a rotating shaft.

[0017] Preferably, the inner wall of the limiting cylinder is provided with a wear-resistant bushing.

[0018] Preferably, the bottom or side of the fixing frame is provided with an operation panel for controlling the operation of the hydraulic push rod.

[0019] This utility model has the following beneficial effects: 1. This utility model solves the problems of inconvenient movement, difficult turning, and complex and unstable adjustment of the dotting direction of existing dotting devices by setting a pushing mechanism, installing fixed wheels on the front side and universal wheels on the rear side of the bottom of the pushing mechanism, and installing the dotting mechanism on a rotatable support frame, and then locking and fixing the support frame with bolts. This improves the mobility and ease of operation of the device, enabling it to quickly adapt to different construction positions and angle requirements.

[0020] 2. This utility model uses a hydraulic push rod as a power source and drives the pressure rod through a linkage mechanism composed of an adjusting rod and a connecting rod. At the same time, a limiting cylinder guides and limits the movement trajectory of the pressure rod. This solves the problems of low efficiency and high labor intensity caused by relying on manual marking in the prior art, or the unstable marking process and low accuracy caused by simple mechanical structure. It achieves fast, labor-saving, stable and accurate automated marking, which significantly improves construction efficiency and marking quality. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0022] Figure 1 This is a perspective view of a marking device for road and bridge construction proposed in this utility model; Figure 2 This is a side view of a marking device for road and bridge construction proposed in this utility model; Figure 3 This is a front view of a marking device for road and bridge construction proposed in this utility model; Figure 4 This is a structural exploded view of a dotting device for road and bridge construction proposed in this utility model; Figure 5 This is a partial structural schematic diagram of a dotting device for road and bridge construction proposed in this utility model; Figure 6 This is a partial structural diagram of a marking device for road and bridge construction proposed in this utility model.

[0023] Legend: 1. Fixed frame; 2. Marking mechanism; 201. Hydraulic push rod; 202. Support frame; 203. Limiting cylinder; 204. Bolt; 205. Adjusting rod; 206. Pressure rod; 207. Connecting rod; 3. Pushing mechanism; 301. Fixed plate; 302. Limiting plate; 303. Buffer rod; 304. Limiting rod; 305. Caster wheel; 306. Fixed wheel. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0025] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Example: Please refer to Figures 1 to 6 This utility model provides a marking device for road and bridge construction, which aims to solve the problems of existing marking devices for road and bridge construction, such as complex structure leading to inconvenience in movement and turning, difficulty in adjusting the marking direction, poor stability, and inability to achieve fast and accurate marking.

[0031] like Figures 1 to 4As shown, a marking device for road and bridge construction includes a fixed frame 1, a marking mechanism 2 installed inside the fixed frame 1, and a pushing mechanism 3 installed at the bottom of the fixed frame 1. The fixed frame 1 serves as the mounting base for the entire device, supporting the components of the marking mechanism 2 and the pushing mechanism 3. The marking mechanism 2 performs precise downward marking actions under hydraulic power. The pushing mechanism 3 enables convenient movement and flexible steering of the entire device on the construction site. The pushing mechanism 3 includes a fixed plate 301, which is fixedly connected to the bottom of the fixed frame 1 by welding. A set of fixed wheels 306 are fixedly connected to the bottom front side of the fixed plate 301, and a set of omnidirectional wheels 305 are installed on the bottom rear side of the fixed plate 301. Flexible steering is achieved through the omnidirectional wheels 305, and stable movement is achieved in conjunction with the fixed wheels 306 on the front side. Limiting rods 304 are vertically installed on both the front and rear sides of the top of plate 301. Limiting plate 302 has through holes and is slidably sleeved on the outside of the limiting rods 304. A buffer rod 303 is connected between the limiting plate 302 and the fixed plate 301. The buffer rod 303 is a spring rod structure. The buffer rod 303 can absorb impact and improve stability during the movement of the device. The support frame 202 of the dotting mechanism 2 is rotatably connected to the inside of the fixed frame 1 through a rotating shaft. The support frame 202 can rotate around the connecting axis to adjust the dotting direction. The bottom of the support frame 202 is threaded with a bolt 204. The end of the bolt 204 can abut against the inner wall of the fixed frame 1. The angle of the support frame 202 after adjustment can be locked by tightening the bolt 204. An operation panel is provided at the bottom or side of the fixed frame 1. The operation panel is used to control the operation of the hydraulic push rod 201.

[0032] To solve the above-mentioned technical problems, the core of the technical solution in this embodiment lies in the unique power transmission and guiding structure inside the dotting mechanism 2, such as... Figure 4 , Figure 5 and Figure 6As shown, the components of the dotting mechanism 2 form a specific structural fit and connection relationship, ensuring the speed and accuracy of the dotting action. The power source of the dotting mechanism 2 is a hydraulic push rod 201, which is a double-acting hydraulic push rod 201. It is powered by an external hydraulic power unit. The rod body of the hydraulic push rod 201 is rotatably connected to the front of the fixed frame 1 through a rotating shaft, allowing the hydraulic push rod 201 to swing slightly during operation to adapt to the motion trajectory of the linkage mechanism. The output end of the hydraulic push rod 201 is rotatably connected to the middle of the adjusting rod 205 through a pin. The top end of the adjusting rod 205 is rotatably connected to one side of the support frame 202 through a rotating shaft. The setting of the adjusting rod 205 changes the direction of force transmission, converting the horizontal thrust of the hydraulic push rod 201 into the vertical power driving the pressure rod 206. The middle part of component 5 is also rotatably connected to one end of the connecting rod 207 via a pivot, and the other end of the connecting rod 207 is rotatably connected to the side of the pressure rod 206 via a pivot. The lower end of the pressure rod 206 is integrally formed with a tapered dotting head for forming marking points on the ground. The pressure rod 206 is vertically inserted into the interior of the limiting cylinder 203, and the outer wall of the pressure rod 206 and the inner wall of the limiting cylinder 203 form a sliding fit. The inner wall of the limiting cylinder 203 is provided with a wear-resistant bushing to reduce the sliding friction angle and extend the service life. The limiting cylinder 203 is fixedly connected to the bottom of the support frame 202 by welding. This sliding fit structure between the pressure rod 206 and the limiting cylinder 203 can provide precise guidance and limitation for the pressure rod 206 when it moves up and down at high speed, effectively preventing the pressure rod 206 from deviating or shaking, thereby ensuring the accuracy of the dotting position.

[0033] As a preferred embodiment, in order to ensure that the hydraulic push rod 201 can automatically reset after marking, the hydraulic push rod 201 is a double-acting hydraulic push rod 201, that is, hydraulic oil can be introduced into both ends of the piston of the hydraulic push rod 201. By controlling the inlet and outlet of the hydraulic oil, the bidirectional movement of the piston rod is realized, ensuring the complete working cycle of the marking mechanism 2.

[0034] As another preferred embodiment, in order to provide stable and reliable hydraulic power, the power source of the hydraulic push rod 201 is an external hydraulic power unit. The external hydraulic power unit includes a hydraulic pump, oil tank, valve group and pipeline, etc., which are connected to the hydraulic push rod 201 through quick connectors, which facilitates rapid deployment and replacement on the construction site, and also makes it easy to select power units with different power according to construction needs.

[0035] As a preferred embodiment, in order to ensure that the dotting effect is clear and durable, the lower end of the pressure bar 206 is integrally formed with a tapered dotting head. The tapered dotting head is made of high-strength wear-resistant alloy steel and the surface is hardened to resist repeated impacts and wear, ensuring that clear and durable indentation marks are formed on road materials such as concrete and asphalt.

[0036] In a preferred embodiment, to further prevent the pressure rod 206 from shifting during operation and to provide additional stability for the dotting operation, limit rods 304 are vertically installed on both the front and rear sides of the top face of the fixing plate 301. The limit plate 302 has through holes and is slidably sleeved on the outside of the limit rods 304. The limit plate 302 can contact and fix the lateral position of the pressure rod 206 during dotting. The cooperation between the limit rods 304 and the limit plate 302 provides double lateral limiting for the dotting process.

[0037] In a preferred embodiment, in order to reduce the bumps during the movement of the device and protect the internal precision components, a buffer rod 303 is connected between the limiting plate 302 and the fixing plate 301. The buffer rod 303 is a spring rod structure, and the elastic element of the spring rod is preferably a helical compression spring. One end is fixed to the lower surface of the limiting plate 302 and the other end is fixed to the upper surface of the fixing plate 301. The vertical impact and vibration are absorbed by the extension and contraction of the spring.

[0038] As a preferred embodiment, in order to improve the accuracy and stability of the angle adjustment of the support frame 202, a limiting structure is provided at the connection between the support frame 202 and the rotating shaft of the fixed frame 1. The limiting structure includes a toothed disc or a positioning pin, and a bolt 204 is used to lock the limiting structure. By tightening the bolt 204, the toothed disc or positioning pin is engaged or inserted, thereby ensuring that the support frame 202 will not rotate accidentally after adjustment.

[0039] In another preferred embodiment, in order to ensure the flexibility and reliability of the linkage mechanism transmission, the connecting rod 207 is rotatably connected to the adjusting rod 205 and the pressure rod 206 via a rotating shaft. The rotating shaft connection adopts a wear-resistant pin and a self-lubricating bushing to reduce friction loss and extend service life.

[0040] As another preferred embodiment, in order to improve the smoothness of the sliding of the pressure rod 206 inside the limiting cylinder 203 and its service life, the inner wall of the limiting cylinder 203 is provided with a wear-resistant bushing. The wear-resistant bushing is made of polytetrafluoroethylene or oil-impregnated nylon material, which has a low coefficient of friction and excellent wear resistance, ensuring that the pressure rod 206 can slide stably for a long time and reducing maintenance requirements.

[0041] As a preferred embodiment, in order to facilitate the operator's control and monitoring of the device, the bottom or side of the fixed frame 1 is provided with an operation panel. The operation panel integrates the start button, emergency stop button, pressure indicator and other necessary control elements of the hydraulic push rod 201. The operator can accurately control the dotting process through the operation panel.

[0042] Working principle: When a dotting operation is required, the operator first activates the hydraulic push rod 201 through the operation panel located at the bottom or side of the fixed frame 1. The external hydraulic power unit of the hydraulic push rod 201 provides stable hydraulic oil, which drives the piston rod of the double-acting hydraulic push rod 201 to extend or retract. When the piston rod of the hydraulic push rod 201 extends, it pushes the middle part of the adjusting rod 205, which is rotatably connected to the output end through a pin. The adjusting rod 205 uses the connection point between its top end and the pivot of the support frame 202 as a fulcrum to convert the horizontal pushing force of the hydraulic push rod 201 into a vertically downward force. The movement of the middle part of the adjusting rod 205 is further transmitted to the side of the pressure rod 206 through the connecting rod 207 connected by the pivot. This transmission method of the connecting rod 207 ensures that the pressure rod 206 can obtain sufficient vertically downward thrust. After being pushed downward, the pressure rod 206 slides vertically along the inside of the limiting cylinder 203 fixedly connected to the bottom of the support frame 202. Because the outer wall of the pressure rod 206 and the inner wall of the limiting cylinder 203 form a precise sliding fit, and the inner wall of the limiting cylinder 203 is provided with a wear-resistant bushing, the movement trajectory of the pressure rod 206 is strictly limited to the vertical direction, effectively resisting the lateral force generated during the marking process and preventing the pressure rod 206 from deflecting or shaking. The cone-shaped marking head at the lower end of the pressure rod 206, which is integrally formed, makes precise and powerful contact with the ground under the action of strong hydraulic thrust, forming a clear marking point. After completing one marking action, the operator controls the oil circuit switching of the hydraulic push rod 201 through the control panel. The piston rod of the hydraulic push rod 201 begins to retract. The retraction action of the hydraulic push rod 201, through the linkage mechanism of the adjusting rod 205 and the connecting rod 207, pulls the pressure rod 206 upward, rising from the ground marking point, completing the working cycle of the marking mechanism 2. During the dotting process, if it is necessary to change the dotting direction or adjust the dotting position, the operator can first loosen the bolt 204 threaded to the bottom of the support frame 202. After loosening the bolt 204, the support frame 202 can rotate around the pivot connection with the fixed frame 1, thereby realizing the overall angle adjustment of the dotting mechanism 2. The pivot connection between the support frame 202 and the fixed frame 1 is provided with a limiting structure. By tightening the bolt 204, the limiting structure can be engaged or inserted, locking the support frame 202 at the required angle and ensuring the stability of the dotting direction. When the entire marking device needs to be moved on the construction site, the operator can move the device on the ground by pushing the fixed frame 1. The fixed plate 301 at the bottom of the pushing mechanism 3 is equipped with a set of front fixed wheels 306 and a set of rear universal wheels 305. The universal wheels 305 can achieve 360-degree free turning, providing extremely high maneuverability, allowing the device to easily change its direction of travel. The fixed wheels 306 provide stability for straight-line movement. During the movement, even if the road surface is uneven, the limiting rods 304 and limiting plates 302 on the front and rear sides of the top of the fixed plate 301, as well as the buffer rod 303 connecting the limiting plate 302 and the fixed plate 301, are spring rod structures that can effectively absorb the impact and vibration from the ground, reduce the bumps of the device, protect the internal components from damage, and thus extend the service life of the device. By combining and coordinating the fixed frame 1, the dotting mechanism 2, and the pushing mechanism 3, a dotting device for road and bridge construction effectively solves the problems of insufficient dotting flexibility, poor operation convenience, and poor stability in the existing technology, and greatly improves the efficiency and accuracy of dotting operations in road and bridge construction.

Claims

1. A marking device for road and bridge construction, comprising: The device includes a fixed frame (1), a dotting mechanism (2), and a pushing mechanism (3). The fixed frame (1) is used to support the components of the dotting device. The dotting mechanism (2) is installed inside the fixed frame (1). The pushing mechanism (3) is installed at the bottom of the fixed frame (1). Its features are, The dotting mechanism (2) includes a hydraulic push rod (201), a support frame (202), a limiting cylinder (203), a bolt (204), an adjusting rod (205), a pressure rod (206), and a connecting rod (207). The hydraulic push rod (201) is connected to the front of the inside of the fixed frame (1) via a rotating shaft. The output end of the hydraulic push rod (201) is connected to the middle of the adjusting rod (205), and the top end of the adjusting rod (205) is connected to the support frame via a rotating shaft. On one side of (202), the connecting rod (207) connects the middle part of the adjusting rod (205) and the side part of the pressure rod (206). The pressure rod (206) slides vertically inside the limiting cylinder (203). The limiting cylinder (203) is fixedly connected to the bottom of the support frame (202). The support frame (202) is connected to the inside of the fixed frame (1) through a rotating shaft. The bolt (204) is threadedly connected to the bottom of the support frame (202) to fix the position of the support frame (202).

2. The marking device for road and bridge construction according to claim 1, characterized in that, The hydraulic push rod (201) is a double-acting hydraulic push rod (201).

3. The marking device for road and bridge construction according to claim 1, characterized in that, The lower end of the pressure bar (206) is provided with a tapered dotting head.

4. A marking device for road and bridge construction according to claim 1, characterized in that, The power source of the hydraulic push rod (201) is an external hydraulic power unit.

5. A marking device for road and bridge construction according to claim 1, characterized in that, The pushing mechanism (3) includes a fixed plate (301), a limiting plate (302), a buffer rod (303), a limiting rod (304), a caster wheel (305), and a fixed wheel (306). The fixed plate (301) is fixedly connected to the bottom of the fixed frame (1). A set of fixed wheels (306) is installed on the front side of the fixed plate (301), and a set of caster wheels (305) is installed on the rear side of the fixed plate (301). A limiting rod (304) is installed on the front and rear sides of the top of the fixed plate (301), and the limiting plate (302) slides inside the limiting rod (304).

6. A marking device for road and bridge construction according to claim 5, characterized in that, A buffer rod (303) is connected between the limiting plate (302) and the fixing plate (301), and the buffer rod (303) is a spring rod structure.

7. A marking device for road and bridge construction according to claim 1, characterized in that, The support frame (202) and the fixed frame (1) are connected by a limiting structure at the pivot joint, and the bolt (204) is used to lock the limiting structure.

8. A marking device for road and bridge construction according to claim 1, characterized in that, The connecting rod (207) is connected to the adjusting rod (205) and the pressure rod (206) via a rotating shaft.

9. A marking device for road and bridge construction according to claim 1, characterized in that, The inner wall of the limiting cylinder (203) is provided with a wear-resistant bushing.

10. A marking device for road and bridge construction according to claim 1, characterized in that, The bottom or side of the fixed frame (1) is provided with an operation panel for controlling the operation of the hydraulic push rod (201).

Images