Laser line instrument for road construction

Abstract

The utility model relates to a kind of laser setting-out instrument for road construction, belong to road setting-out technical field.It includes two groups of pedestal support, a group of telescopic guide rail and multiple laser transmitters, and two groups of pedestal support are respectively located at the left and right ends of telescopic guide rail.The utility model is adjusted the height of two groups of pedestal support according to the cross slope angle of road by setting two groups of pedestal support, so that the inclination of telescopic guide rail and the cross slope of road are in parallel state.It can also adjust the pitch angle of telescopic guide rail and laser transmitter according to the longitudinal slope angle of road, so that the light beam emitted by laser transmitter and the longitudinal slope of road are in parallel state.During setting-out, laser beam emitted by laser transmitter can be used for road surface control, to speed up road setting-out, reduce workload, and laser transmitter can emit more than 100 meters, compared with traditional setting-out construction, the number of control points is greatly reduced.Secondly, the emitted laser is used for road surface control, and each point on the road surface is within the control line range.

Description

TECHNICAL FIELD

[0001] The utility model relates to road line -laying technical field especially relates to a laser line -laying instrument for road construction. BACKGROUND

[0002] Road line -laying refers to in the process of road engineering construction, according to design drawing and construction requirement, in the field through accurate measurement and calibration, the actual demarcation of each construction control line and elevation point of road, ensure that each link in the construction process can be strictly in accordance with the design scheme implementation.

[0003] At present, road line -laying adopts sideline standard point control method, calculates the elevation of corresponding control point through drawing, then measures the elevation of the point in situ through level, to determine the construction control line of each structural layer of road, to ensure the accuracy of construction.

[0004] When line -laying, for the control precision, need to measure and set control point every five meters on the two sides of road. But municipal road construction, often road length is larger, this makes the control point needed by road structural layer more, this leads to the measurement workload greatly increases. Secondly, through the control point of structural layer two sides to carry out large area construction control, construction precision is often lower, leads to local deviation to be larger, and then influence the construction quality and effect of overall road. CONTENT OF THE UTILITY MODEL

[0005] To solve the above technical problem, the utility model provides a laser line -laying instrument for road construction. The technical scheme of the utility model is as follows:

[0006] A laser line -laying instrument for road construction, including two groups of base supports, a group of telescopic guide rails and multiple groups of laser transmitters, two groups of the base supports are located at the left and right ends of the telescopic guide rail respectively, and the multiple groups of laser transmitters are detachably fixedly connected on the telescopic guide rail.

[0007] The base support includes telescopic triangular support and height-adjustable support rod, the support rod is connected to the upper end of the telescopic triangular support, two groups of side plates are connected to the upper end of the support rod, a top plate is fixedly connected to the upper surfaces of the two groups of side plates, a laser range finder for measuring the height from the ground is fixedly connected to the lower end of the top plate and the inner side of the two groups of side plates, a level is fixedly connected to one side of the upper surface of the top plate, a U-shaped seat is fixedly connected to the center of the upper surface of the top plate, a movable block is rotatably connected to the inner side of the U-shaped seat through a shaft rod one, the shaft rod one is fixedly connected between the movable block, a rotating assembly for adjusting the pitch angle of the telescopic guide rail and the laser transmitter is connected to the upper surface of the movable block, and the telescopic guide rail is connected with the rotating assembly.

[0008] Optionally, the telescopic triangular support comprises a fixed seat and three groups of C-shaped buckles, a through hole for passing the light beam of the laser range finder is arranged in the center of the fixed seat, three groups of the C-shaped buckles are arranged in an annular array on the outer side of the fixed seat, the inner side of the C-shaped buckle is hingedly connected with a supporting leg, the lower end of the supporting leg is fixedly connected with an L-shaped plate, a threaded adjusting rod is threadedly connected to the L-shaped plate, and the lower end of the threaded adjusting rod is hingedly connected with a bottom plate.

[0009] Optionally, the lower surface of the fixed seat is fixedly connected with a center pipe, the center pipe is collinear with the axis of the through hole, the inner side of each of the three groups of supporting legs is hingedly connected with a connecting rod, and the other end of each of the three groups of connecting rods is commonly hingedly connected with a center seat, and the center seat is slidingly sleeved on the outer side of the center pipe.

[0010] Optionally, the supporting rod comprises an inner pipe, a fixed plate and an adjusting sleeve, the inner pipe is fixedly connected to the center position of the upper surface of the fixed seat, and the inner pipe is collinear with the axis of the through hole, a center hole for passing the light beam of the laser range finder is arranged in the center of the fixed plate, a fixed ring seat is fixedly connected to the center of the lower surface of the fixed plate, the upper end of the adjusting sleeve is rotatably connected to the inner side of the fixed ring seat through a bearing, a knob sleeve is fixedly sleeved on the outer side of the adjusting sleeve, the adjusting sleeve is threadedly sleeved on the outer end of the inner pipe, a guide sleeve is fixedly connected to one side of the lower surface of the fixed plate, and a guide rod is fixedly connected to one side of the upper surface of the fixed seat and slides with the guide sleeve.

[0011] Optionally, one end of the shaft rod one extends to the outer side of the U-shaped seat and is threadedly sleeved with a limiting nut, and the movable block cannot rotate when the limiting nut abuts against one side of the U-shaped seat.

[0012] Optionally, the rotating assembly comprises a rotating seat, the rotating seat is fixedly connected to the upper surface of the movable block, a connecting seat is rotatably connected to the inner side of the rotating seat through a shaft rod two, the shaft rod two is fixedly connected with the connecting seat, one end of the shaft rod two extends to the outer side of the rotating seat and is fixedly connected with a limiting tooth disc, a circle of scale lines is arranged on the surface of the limiting tooth disc, a limiting piece for limiting the rotation of the limiting tooth disc is connected to one side of the rotating seat, and an L-shaped seat for fixing the telescopic guide rail is fixedly connected to the upper surface of the connecting seat.

[0013] Optionally, the limiting piece comprises a U-shaped buckle and a limiting tooth, the U-shaped buckle is fixedly connected to one side of the rotating seat and located directly below the limiting tooth disc, a moving plate is slidably connected to the inside of the U-shaped buckle, the limiting tooth is fixedly connected to the upper surface of the moving plate, a spring is abutted between the lower surface of the moving plate and the U-shaped buckle, the limiting tooth is elastically abutted in the tooth groove of the limiting tooth disc through the spring, a threaded hole one is formed through the lower surface of the U-shaped buckle, a threaded column is threadedly connected to the inside of the threaded hole one, a knob is fixedly connected to the lower end of the threaded column, the limiting tooth disc cannot rotate when the threaded column is abutted against the lower surface of the moving plate.

[0014] Optionally, the telescopic guide rail comprises two groups of side C-shaped guide rails and one group of center C-shaped guide rails, the two groups of side C-shaped guide rails are slidably connected to the left and right ends outside the center C-shaped guide rail respectively, the side C-shaped guide rail is flush with the opening side of the center C-shaped guide rail, the rear side of the laser emitter is fixedly connected with a threaded long rod, the rear side of the side C-shaped guide rail is formed through with a fixed groove one for passing through the threaded long rod, the rear side of the center C-shaped guide rail is formed through with a fixed groove two for passing through the threaded long rod, the outside of the threaded long rod is threadedly sleeved with a locking nut for fixing the position of the laser emitter, the lower surface of the side C-shaped guide rail is formed through with a threaded hole two, and a fixing bolt for fixing the relative position of the side C-shaped guide rail and the center C-shaped guide rail is threadedly connected in the threaded hole two.

[0015] Optionally, one end of the side C-shaped guide rail away from the center C-shaped guide rail is fixedly connected with a threaded short rod, the vertical edge of the L-shaped seat is formed through with a movable hole, the threaded short rod passes through the movable hole and is fixed through a fixing nut, the lower surface of the side C-shaped guide rail and one side close to the L-shaped seat are fixedly connected with a guide block, and the upper surface of the horizontal edge of the L-shaped seat is formed with a guide groove matched with the guide block.

[0016] All the optional technical solutions can be combined arbitrarily, and the structures after combination are not described in detail.

[0017] Through the above scheme, the beneficial effects of the present application are as follows:

[0018] The utility model discloses a set up two groups of base support, according to the horizontal slope angle of road respectively adjusts the height of two groups of base support, makes the inclination of telescopic guide rail and the horizontal slope of road is in parallel state. Still can adjust the pitch angle of telescopic guide rail and laser emitter according to the longitudinal slope angle of road, makes the light beam of laser emitter and the longitudinal slope of road is in parallel state. When putting line, can utilize the laser beam of laser emitter emission to carry out the road surface control, accelerates the road putting line, reduces the workload, and laser emitter can emit 100 meters above, compares the traditional putting line construction, and the quantity of control point greatly reduces. Secondly, utilize the laser of emission to carry out the road surface control, and each point of road surface is in the control line range, and each position passes through the setting of control line, and the local problem can be found in time after appearing, thereby improving construction precision and quality.

[0019] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following preferred embodiments of the utility model are described in detail below with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The overall appearance structure schematic diagram of laser line instrument for road construction in another working state is provided for the utility model.

[0021] Figure 2 The overall appearance structure schematic diagram of laser line instrument for road construction in another working state is provided for the utility model.

[0022] Figure 3 The overall appearance structure schematic diagram of laser line instrument for road construction in another working state is provided for the utility model.

[0023] Figure 4 The sectional view of base support in the utility model is provided.

[0024] Figure 5 The partial exploded structure schematic diagram of base support in the utility model is provided.

[0025] Figure 6 The exploded structure schematic diagram of telescopic triangular support in the utility model is provided.

[0026] Figure 7 The exploded structure schematic diagram of U-shaped seat and rotating assembly in the utility model is provided.

[0027] Figure 8 The structure schematic diagram of rotating assembly in the utility model is provided.

[0028] Figure 9 The exploded structure schematic diagram of part of components in rotating assembly in the utility model is provided.

[0029] Figure 10 It is the exploded structural schematic view of telescopic guide rail in the utility model.

[0030] Reference signs in the drawing: 1, base support; 11, telescopic triangular support; 111, fixed seat; 1111, through hole; 112, C-shaped buckle; 113, support leg; 114, L-shaped plate; 115, threaded adjusting rod; 116, bottom plate; 117, center pipe; 118, connecting rod; 119, center seat; 12, support rod; 121, inner pipe; 122, fixed plate; 1221, fixed ring seat; 1222, center hole; 123, adjusting sleeve; 1231, knob sleeve; 124, guide sleeve; 125, guide rod; 13, side plate; 14, top plate; 15, laser range finder; 16, level; 17, U-shaped seat; 171, shaft rod one; 172, movable block; 173, limiting nut; 18, rotating assembly; 181, rotating seat; 182, shaft rod two; 183, connecting seat; 184, limiting tooth disc; 1841, scale line; 185, limiting piece; 1851, U-shaped buckle; 18511, threaded hole one; 1852, moving plate; 1853, limiting tooth; 1854, spring; 1855, threaded column; 1856, knob; 186, L-shaped seat; 1861, movable hole; 1862, guide groove; 2, telescopic guide rail; 21, side C-shaped guide rail; 211, fixed groove one; 212, threaded hole two; 213, fixed bolt; 214, threaded short rod; 215, fixed nut; 216, guide block; 22, center C-shaped guide rail; 221, fixed groove two; 3, laser emitter; 31, threaded long rod; 32, locking nut. DETAILED DESCRIPTION

[0031] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0032] Please refer to Figures 1-10 The utility model provides a kind of laser line laying instrument for road construction, including two groups of base support 1, a group of telescopic guide rail 2 and multiple laser emitters 3, two groups of base support 1 are located at the left and right ends of telescopic guide rail 2 respectively, and multiple laser emitters 3 are detachably fixedly connected on telescopic guide rail 2;

[0033] The base support 1 comprises a telescopic triangular support 11 and a height-adjustable support rod 12, the upper end of the telescopic triangular support 11 is connected with the support rod 12, the upper end of the support rod 12 is connected with two groups of side plates 13, the upper surfaces of the two groups of side plates 13 are fixedly connected with a top plate 14, the lower end of the top plate 14 and the inner side of the two groups of side plates 13 are fixedly connected with a laser range finder 15 for measuring the height from the ground, one side of the upper surface of the top plate 14 is fixedly connected with a level 16, the upper surface of the top plate 14 is fixedly connected with a U-shaped seat 17, the inner side of the U-shaped seat 17 is rotatably connected with a movable block 172 through a shaft rod 171, the shaft rod 171 and the movable block 172 are fixedly connected, the upper surface of the movable block 172 is connected with a rotating assembly 18 for adjusting the pitch angle of the telescopic guide rail 2 and the laser emitter 3, and the telescopic guide rail 2 is connected with the rotating assembly 18.

[0034] The two groups of base supports 1 are arranged, the heights of the two groups of base supports 1 are adjusted according to the transverse slope angle of the road, so that the inclination of the telescopic guide rail 2 is parallel to the transverse slope of the road. The pitch angle of the telescopic guide rail 2 and the laser emitter 3 can be adjusted according to the longitudinal slope angle of the road, so that the light beam emitted by the laser emitter 3 is parallel to the longitudinal slope of the road.

[0035] Specifically, in the actual use process, the length of the telescopic guide rail 2 can be adjusted in real time according to the length of the road transverse slope. In addition, different numbers of laser emitters 3 can be flexibly installed according to actual needs to adapt to different scales and complexity of the construction environment.

[0036] Working principle: first, according to the length of the road, the two horizontal control points of the road are selected, the elevation of the point is determined through the drawing calculation, and the original ground elevation of the point is measured through the level instrument, so as to calculate the height difference of the structural surface from the original ground, and then provide accurate reference for subsequent measurement and adjustment. The second step is to arrange two groups of base supports 1 at the two measurement points respectively, adjust the height of the two groups of telescopic triangular supports 11 respectively, and use the level 16 to make the two groups of base supports 1 horizontal. The third step is to measure the height from the ground by the laser range finder 15, adjust the height of the support rod 12 of the two groups of base supports 1 respectively, and when the distance displayed by the laser range finder 15 is the same as the calculated height difference from the original ground, the adjustment is completed. The fourth step is to install the telescopic guide rail 2 on the two groups of base supports 1, and the road transverse slope control is completed at this time. The fifth step is to adjust the elevation angle of the telescopic guide rail 2 and the laser emitter 3 according to the required longitudinal slope angle of the road through the rotating assembly 18, and after the adjustment is completed, the road transverse slope and longitudinal slope are controlled. The sixth step is to mark the point and lay out the line according to the light beam emitted by the laser emitter 3.

[0037] Further, the telescopic triangular support 11 includes a fixed seat 111 and three groups of C-shaped buckles 112, a through hole 1111 is provided in the center of the fixed seat 111 for passing through the light beam of the laser range finder 15, and the three groups of C-shaped buckles 112 are annularly arranged on the outside of the fixed seat 111. The inner side of the C-shaped buckle 112 is hinged with a supporting leg 113, the lower end of the supporting leg 113 is fixedly connected with an L-shaped plate 114, the L-shaped plate 114 is threadedly connected with a threaded adjusting rod 115, and the lower end of the threaded adjusting rod 115 is hinged with a bottom plate 116.

[0038] Specifically, in order to ensure that the base support 1 is in a horizontal state, the height of the three groups of supporting legs 113 can be adjusted according to actual needs. Rotate the threaded adjusting rod 115 to change the relative position of the threaded adjusting rod 115 and the L-shaped plate 114, so as to change the overall height of the supporting leg 113 and the threaded adjusting rod 115.

[0039] Further, the lower surface of the fixed seat 111 is fixedly connected with a center pipe 117, the center pipe 117 is collinear with the axis of the through hole 1111, the inner side of the three groups of supporting legs 113 is hinged with a connecting rod 118, the other end of the three groups of connecting rods 118 is commonly hinged with a center seat 119, and the center seat 119 is slidingly sleeved on the outside of the center pipe 117.

[0040] Specifically, through the structure, the synchronous deployment of the three groups of support legs 113 can be realized, ensuring that their deployment angles are consistent, avoiding uneven support angles, and further maintaining the stability of the support. At the same time, the length of the connecting rod 118 limits the deployment angle of the support leg 113 in design, so that the support leg 113 can only be deployed within a certain range, thereby ensuring that the telescopic triangular support 11 can achieve the best stability and support effect after deployment, avoiding instability caused by excessive deployment or inappropriate angles.

[0041] Further, the support rod 12 comprises an inner tube 121, a fixed plate 122 and an adjusting sleeve 123, the inner tube 121 is fixedly connected at the center position of the upper surface of the fixed seat 111, and the axis of the through hole 1111 is collinear with the inner tube 121, a center hole 1222 for passing the light beam of the laser range finder 15 is provided through the center of the fixed plate 122, a fixed ring seat 1221 is fixedly connected at the center of the lower surface of the fixed plate 122, the upper end of the adjusting sleeve 123 is rotatably connected to the inner side of the fixed ring seat 1221 through a bearing, a knob sleeve 1231 is fixedly sleeved on the outer side of the adjusting sleeve 123, the adjusting sleeve 123 is threadedly sleeved on the outer side of the upper end of the inner tube 121, a guide sleeve 124 is fixedly connected on one side of the lower surface of the fixed plate 122, and a guide rod 125 is fixedly connected on one side of the upper surface of the fixed seat 111 and slides with the guide sleeve 124.

[0042] Specifically, when it is necessary to adjust the overall height of the support rod 12, the knob sleeve 1231 can be manually rotated to drive the adjusting sleeve 123 to rotate, and the adjusting sleeve 123 is threadedly connected with the inner tube 121, so that the relative position between the adjusting sleeve 123 and the inner tube 121 is changed with the rotation of the adjusting sleeve 123, thereby adjusting the height of the support rod 12. During the adjustment process, the guide sleeve 124 and the guide rod 125 slide relative to each other, and the sliding of the guide rod 125 limits the movement of the fixed plate 122 to prevent it from rotating synchronously with the adjusting sleeve 123.

[0043] Further, one end of the shaft rod one 171 extends to the outer side of the U-shaped seat 17 and is threadedly sleeved with a limiting nut 173, and the limiting nut 173 abuts against one side of the U-shaped seat 17, so that the movable block 172 cannot rotate.

[0044] Specifically, after the telescopic guide rail 2 is connected and fixed with the rotating assembly 18, the limiting nut 173 is tightened to fix the inclination angle of the telescopic guide rail 2.

[0045] Further, the rotating assembly 18 comprises a rotating seat 181 fixedly connected to the upper surface of the movable block 172, the inner side of the rotating seat 181 is rotationally connected with a connecting seat 183 through a shaft rod two 182, the shaft rod two 182 is fixedly connected with the connecting seat 183, one end of the shaft rod two 182 extends to the outer side of the rotating seat 181 and is fixedly connected with a limiting tooth disc 184, the surface of the limiting tooth disc 184 is provided with a circle of scale lines 1841, one side of the rotating seat 181 is connected with a limiting piece 185 for limiting the rotation of the limiting tooth disc 184, the upper surface of the connecting seat 183 is fixedly connected with an L-shaped seat 186 for fixing the telescopic guide rail 2.

[0046] Specifically, the telescopic guide rail 2 is manually rotated, the telescopic guide rail 2 drives the limiting tooth disc 184 to rotate through the L-shaped seat 186, the connecting seat 183 and the shaft rod two 182, the scale lines 1841 of the limiting tooth disc 184 provide clear angle indication, so that the user can accurately adjust the telescopic guide rail 2 to the required angle. After the angle adjustment is completed, the rotation of the limiting tooth disc 184 is limited through the limiting piece 185, at this time, the elevation angle of the telescopic guide rail 2 and the laser emitter 3 is fixed. Preferably, the commonly used angles of the road longitudinal slope can be highlighted on the scale lines 1841 outside the limiting tooth disc 184 (such as one-thousandth, three, five and the like converted into angles), which facilitates the user to quickly select and adjust to the suitable angle in actual operation.

[0047] Further, the limiting piece 185 comprises a U-shaped buckle 1851 and a limiting tooth 1853, the U-shaped buckle 1851 is fixedly connected to one side of the rotating seat 181 and located directly below the limiting tooth disc 184, the inner part of the U-shaped buckle 1851 is slidably connected with a moving plate 1852, the upper surface of the moving plate 1852 is fixedly connected with the limiting tooth 1853, the lower surface of the moving plate 1852 abuts with a spring 1854 between the U-shaped buckle 1851, the limiting tooth 1853 elastically abuts in the tooth groove of the limiting tooth disc 184 through the spring 1854, the lower surface of the U-shaped buckle 1851 is throughly provided with a threaded hole one 18511, the inner part of the threaded hole one 18511 is screwedly connected with a threaded column 1855, the lower end of the threaded column 1855 is fixedly connected with a knob 1856, when the threaded column 1855 abuts the lower surface of the moving plate 1852, the limiting tooth disc 184 will not be able to rotate.

[0048] Specifically, when the limiting tooth disc 184 rotates, the limiting teeth 1853 will be in contact with the tooth grooves of the limiting tooth disc 184 as needed under the action of the spring 1854, so as to realize the accurate elastic limiting of the limiting tooth disc 184. When the rotation angle adjustment of the limiting tooth disc 184 is completed, the knob 1856 is manually rotated, the knob 1856 drives the threaded column 1855 to rotate, and the threaded column 1855 abuts against the lower surface of the moving plate 1852, so as to firmly clamp the limiting teeth 1853 in the tooth grooves of the limiting tooth disc 184, thereby limiting the rotation of the limiting tooth disc 184. At this time, the rotation angle of the limiting tooth disc 184 is completely fixed and cannot continue to rotate, so as to ensure that the elevation angle of the telescopic guide rail 2 and the laser emitter 3 cannot change, and the stability is ensured.

[0049] Further, the telescopic guide rail 2 includes two groups of side C-shaped guide rails 21 and a group of center C-shaped guide rails 22, the two groups of side C-shaped guide rails 21 are respectively slidably connected at the left and right ends outside the center C-shaped guide rails 22, the side C-shaped guide rails 21 are flush with the opening side of the center C-shaped guide rails 22, the rear side of the laser emitter 3 is fixedly connected with a threaded long rod 31, the rear side of the side C-shaped guide rail 21 is penetrated to be provided with a fixed groove one 211 for passing through the threaded long rod 31, the rear side of the center C-shaped guide rail 22 is penetrated to be provided with a fixed groove two 221 for passing through the threaded long rod 31, the outer side of the threaded long rod 31 is threadedly sleeved with a locking nut 32 for fixing the position of the laser emitter 3, the lower surface of the side C-shaped guide rail 21 is penetrated to be provided with a threaded hole two 212, and the threaded hole two 212 is threadedly connected with a fixing bolt 213 for fixing the relative position of the side C-shaped guide rail 21 and the center C-shaped guide rail 22.

[0050] Specifically, the overall length of the telescopic guide rail 2 can be adjusted according to the length of the road transverse slope. The relative positions of the two groups of side C-shaped guide rails 21 and the center C-shaped guide rail 22 are respectively adjusted to reach the required length, and after the adjustment is completed, the fixing bolt 213 is used for fixing.

[0051] Further, one end of the side C-shaped guide rail 21 away from the center C-shaped guide rail 22 is fixedly connected with a threaded short rod 214, the vertical edge of the L-shaped seat 186 is penetrated to be provided with a movable hole 1861, the threaded short rod 214 penetrates the movable hole 1861 and is fixed through a fixing nut 215, the lower surface of the side C-shaped guide rail 21 and close to one side of the L-shaped seat 186 is fixedly connected with a guide block 216, and the upper surface of the horizontal edge of the L-shaped seat 186 is provided with a guide groove 1862 matched with the guide block 216.

[0052] Specifically, when installing the telescopic guide rail 2 on the L-shaped seat 186, only need to insert the guide block 216 into the guide slot 1862, and then use the fixing nut 215 to fix after the threaded short rod 214 passes through the movable hole 1861, so the installation process of the telescopic guide rail 2 is completed. The whole installation process is simple and fast, without complex adjustment and operation, saving the installation time.

[0053] It should be noted that the design and application range of the utility model are specially for the use scene of straight road. Meanwhile, the laser range finder 15, the level 16 and the laser emitter 3 mentioned in the above are all the prior art widely used at present, and the specific structure thereof will not be repeatedly introduced herein.

[0054] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and it should be pointed out that, for ordinary skilled in the art, on the premise of not departing from the technical principles of the utility model, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection range of the utility model.

Claims

1. A laser line-laying instrument for road construction, characterized in that: It includes two sets of base brackets (1), one set of telescopic guide rails (2) and multiple sets of laser emitters (3). The two sets of base brackets (1) are located at the left and right ends of the telescopic guide rails (2) respectively, and the multiple sets of laser emitters (3) are detachably fixedly connected to the telescopic guide rails (2). The base support (1) includes a telescopic triangular support (11) and a height-adjustable support rod (12). The support rod (12) is connected to the upper end of the telescopic triangular support (11). Two sets of side plates (13) are connected to the upper end of the support rod (12). A top plate (14) is fixedly connected to the upper surface of the two sets of side plates (13). A laser rangefinder (15) for measuring the height above the ground is fixedly connected to the lower end of the top plate (14) and inside the two sets of side plates (13). The upper surface of the top plate (14) A level (16) is fixedly connected to one side. A U-shaped seat (17) is fixedly connected to the center of the upper surface of the top plate (14). A movable block (172) is rotatably connected to the inner side of the U-shaped seat (17) via a shaft (171). The shaft (171) and the movable block (172) are fixedly connected. A rotating component (18) for adjusting the pitch angle of the telescopic guide rail (2) and the laser emitter (3) is connected to the upper surface of the movable block (172). The telescopic guide rail (2) is connected to the rotating component (18).

2. The laser line-laying instrument for road construction according to claim 1, characterized in that, The retractable triangular bracket (11) includes a fixed base (111) and three sets of C-shaped buckles (112). The fixed base (111) has a through hole (1111) in the center for passing through the laser rangefinder (15) beam. The three sets of C-shaped buckles (112) are fixed in a ring array on the outside of the fixed base (111). The inner side of the C-shaped buckle (112) is hinged with a support leg (113). The lower end of the support leg (113) is fixedly connected with an L-shaped plate (114). A threaded adjusting rod (115) is threadedly connected to the L-shaped plate (114). The lower end of the threaded adjusting rod (115) is hinged with a base plate (116).

3. The laser line-laying instrument for road construction according to claim 2, characterized in that, A central tube (117) is fixedly connected to the center of the lower surface of the fixed base (111). The axis of the central tube (117) and the through hole (1111) are collinear. A connecting rod (118) is hinged to the inner side of each of the three sets of support legs (113). The other end of the three sets of connecting rods (118) is hinged to a central seat (119). The central seat (119) is slidably sleeved on the outside of the central tube (117).

4. The laser line-laying instrument for road construction according to claim 2, characterized in that, The support rod (12) includes an inner tube (121), a fixing plate (122), and an adjusting sleeve (123). The inner tube (121) is fixedly connected to the center of the upper surface of the fixing seat (111), and the axis of the inner tube (121) is collinear with the axis of the through hole (1111). The center of the fixing plate (122) is provided with a central hole (1222) for passing through the laser rangefinder (15) beam. A fixing ring seat (1221) is fixedly connected to the center of the lower surface of the fixing plate (122). The upper end of the adjusting sleeve (123) is rotatably connected to the inner side of the fixed ring seat (1221) via a bearing. A knob sleeve (1231) is fixedly sleeved on the outer side of the adjusting sleeve (123). The adjusting sleeve (123) is threaded onto the upper outer side of the inner tube (121). A guide sleeve (124) is fixedly connected to one side of the lower surface of the fixed plate (122). A guide rod (125) that slides in cooperation with the guide sleeve (124) is fixedly connected to one side of the upper surface of the fixed seat (111).

5. A laser line-laying instrument for road construction according to claim 1, characterized in that, One end of the shaft (171) extends to the outside of the U-shaped seat (17) and is threaded with a limiting nut (173). When the limiting nut (173) abuts against one side of the U-shaped seat (17), the movable block (172) cannot rotate.

6. The laser line-laying instrument for road construction according to claim 1, characterized in that, The rotating assembly (18) includes a rotating seat (181), which is fixedly connected to the upper surface of the movable block (172). The inner side of the rotating seat (181) is rotatably connected to a connecting seat (183) via a shaft (182). The shaft (182) and the connecting seat (183) are fixedly connected. One end of the shaft (182) extends to the outer side of the rotating seat (181) and is fixedly connected to a limiting gear (184). The surface of the limiting gear (184) is provided with a ring of scale lines (1841). One side of the rotating seat (181) is connected to a limiting member (185) for limiting the rotation of the limiting gear (184). The upper surface of the connecting seat (183) is fixedly connected to an L-shaped seat (186) for fixing the telescopic guide rail (2).

7. A laser line-laying instrument for road construction according to claim 6, characterized in that, The limiting component (185) includes a U-shaped buckle (1851) and a limiting tooth (1853). The U-shaped buckle (1851) is fixedly connected to one side of the rotating seat (181) and located directly below the limiting tooth disc (184). A moving plate (1852) is slidably connected inside the U-shaped buckle (1851). The limiting tooth (1853) is fixedly connected to the upper surface of the moving plate (1852). A spring (1854) abuts against the lower surface of the moving plate (1852) and the U-shaped buckle (1851). The limiting tooth (1853) is elastically abutted against the tooth groove of the limiting tooth disk (184) by a spring (1854). The lower surface of the U-shaped buckle (1851) is provided with a threaded hole (18511). The threaded hole (18511) is internally threaded with a threaded post (1855). The lower end of the threaded post (1855) is fixedly connected with a knob (1856). When the threaded post (1855) abuts against the lower surface of the moving plate (1852), the limiting tooth disk (184) will not be able to rotate.

8. A laser line-laying instrument for road construction according to claim 6, characterized in that, The telescopic guide rail (2) includes two sets of side C-shaped guide rails (21) and one set of central C-shaped guide rails (22). The two sets of side C-shaped guide rails (21) are slidably connected to the left and right ends of the outer side of the central C-shaped guide rail (22). The side C-shaped guide rails (21) are flush with the open side of the central C-shaped guide rail (22). A threaded rod (31) is fixedly connected to the rear side of the laser emitter (3). A fixing groove (211) for the threaded rod (31) to pass through is provided on the rear side of the side C-shaped guide rails (21). The rear side of the central C-shaped guide rail (22) is provided with a fixing groove (221) for passing through the threaded rod (31). The outer side of the threaded rod (31) is threaded with a locking nut (32) for fixing the position of the laser emitter (3). The lower surface of the side C-shaped guide rail (21) is provided with a threaded hole (212). The threaded hole (212) is internally threaded with a fixing bolt (213) for fixing the relative position of the side C-shaped guide rail (21) and the central C-shaped guide rail (22).

9. A laser line-laying instrument for road construction according to claim 8, characterized in that, A threaded short rod (214) is fixedly connected to one end of the side C-shaped guide rail (21) away from the center C-shaped guide rail (22). A movable hole (1861) is opened through the vertical side of the L-shaped seat (186). The threaded short rod (214) passes through the movable hole (1861) and is fixed by a fixing nut (215). A guide block (216) is fixedly connected to the lower surface of the side C-shaped guide rail (21) and the side close to the L-shaped seat (186). A guide groove (1862) that mates with the guide block (216) is opened on the upper surface of the transverse side of the L-shaped seat (186).

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