Engineering detection laser marking device

Abstract

The invention relates to the technical field of engineering detection, in particular to an engineering detection laser marking device which comprises a laser marking instrument, a supporting plate is fixedly connected to the bottom of the laser marking instrument, upper lug plates which are evenly arranged are fixedly connected to the edge of one side of the lower surface of the supporting plate, and a column rod is arranged under the supporting plate; a transverse sleeve is rotationally installed at the upper end of the column rod, a longitudinal locking screw is in threaded connection with the interior of the transverse sleeve, one end of the longitudinal locking screw is sleeved with an end plate, and a plurality of lower lug plates matched with the upper lug plates are evenly installed at the end, facing the supporting plate, of the end plate; the upper lug plate and the lower lug plate are connected through a fastening piece formed by a transverse locking screw and a transverse locking nut, a handle is installed on the outer surface of the end plate, and an anti-deflection piece used for limiting the position of the laser marking instrument is installed at the upper end of the column rod.

Description

Technical Field

[0001] The invention relates to an engineering detection laser marking device, belonging to the technical field of engineering detection. Background Art

[0002] A laser marking instrument is a tool for precise alignment and straightness correction. It uses a beam emitted by a semiconductor laser, which is expanded to form a high-brightness laser line. In practical applications, the laser marking instrument projects a laser line onto the target object to form a clear marking line. Users can accurately align, measure or locate according to this marking line. The laser marking instrument includes a tripod for supporting the laser marking instrument, wherein a lower ear plate is rotatably installed on the top of the tripod, and the lower ear plate is fixed relative to the tripod by a longitudinal locking screw, and the lower ear plate is fixed relative to the upper ear plate at the bottom of the laser marking instrument by a transverse locking screw. The locking screw is used to keep the laser marking instrument in the same position by relying on static friction. When the locking screw is loosened, the laser marking instrument is prone to suddenly tilt due to loss of balance, which will induce the laser marking instrument to collide with the tripod, and the magnitude of the static friction is uncontrollable. During the carrying process, the laser marking instrument will also be skewed and collided due to insufficient static friction, which increases the probability of damage to the laser marking instrument during use and carrying. Summary of the invention

[0003] In view of the shortcomings of the prior art, the object of the present invention is to provide a laser marking device for engineering inspection to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a kind of engineering detection laser marking device, comprising a laser marking instrument, the bottom of the laser marking instrument is connected and fixed with a support plate, and an evenly arranged upper ear plate is connected and fixed at the edge of one side of the lower surface of the support plate, and a column rod is provided directly below the support plate, and a foldable tripod is installed at the lower end of the column rod, and a transverse sleeve is rotatably installed on the upper end of the column rod, and a longitudinal locking screw is connected to the inner thread of the transverse sleeve, and an end plate is sleeved on one end of the longitudinal locking screw, and a longitudinal locking nut threadedly connected to the longitudinal locking screw is provided on the side of the end plate away from the transverse sleeve, and a plurality of lower ear plates matching the upper ear plates are evenly installed on the end of the end plate facing the support plate, and the plurality of lower ear plates are alternately arranged with the plurality of upper ear plates, and the upper ear plates and the lower ear plates are connected by fasteners formed by transverse locking screws and transverse locking nuts, and a handle is installed on the outer surface of the end plate, and an anti-skew member for limiting the position of the laser marking instrument is installed on the upper end of the column rod.

[0005] Specifically, the anti-skew member includes a U-shaped plate, a U-shaped plate is installed at the lower position of the outer surface of the end plate, the column is inserted in the U-shaped plate, and cross plates are installed at both ends of the U-shaped plate. A lifting member is provided on the lower side of the U-shaped plate to prevent the laser line marker from rotating around the longitudinal locking screw at will. An L-shaped plate is installed at the end of the cross plate away from the U-shaped plate, and the horizontal part of the L-shaped plate extends to the upper side of the laser line marker. A vertical hole arranged concentrically with the column is opened on the upper surface of the horizontal part of the L-shaped plate, and a lifting rope is inserted in the vertical hole. A tensioning member is installed on the upper end of the lifting rope, and the lower end of the lifting rope is connected to the laser line marker through a connecting member.

[0006] Specifically, the lifting member includes a rotating plate, a horizontally arranged rotating plate is provided on the lower side of the U-shaped plate, the rotating plate is sleeved on the column rod and the rotating plate is rotatably connected to the column rod, two circular holes are symmetrically provided on the upper surface of the rotating plate, vertical cylinders are installed in the two circular holes, a force unloading member is installed in the lower position of the vertical cylinder, a guide hole is provided at the upper end of the vertical cylinder, a lifting rod is inserted in the guide hole, and limit frames are installed on the lower surfaces of the two horizontal plates, and the limit frames are arranged along the length direction of the horizontal plates. The upper ends of the two lifting rods extend into the two limit frames respectively, and a disc is installed at one end of the lifting rod in the vertical cylinder, and the disc is slidably installed in the vertical cylinder, and a first spring in a compressed state is installed on the lower side of the disc.

[0007] Specifically, the unloading member includes a piston, a piston is provided under the first spring, the piston is slidably installed in the vertical cylinder, the lower end of the vertical cylinder is open, the lower end of the vertical cylinder is threadedly connected with a threaded cover, and a venting valve is installed on the lower surface of the threaded cover.

[0008] Specifically, a circular opening is opened in the middle of the upper surface of the rotating plate, the column rod passes through the circular opening, and positioning rings are provided on the upper and lower sides of the circular opening. The positioning rings are in contact with the rotating plate, and the positioning rings are sleeved on the column rod and fixedly connected to the column rod.

[0009] Specifically, the connecting part includes a U-shaped seat, a detachable U-shaped seat is installed on the top of the laser marking instrument, a slider is slidably installed in the U-shaped seat, the lower end of the suspension rope is fixedly connected to the slider, an adjusting screw is threadedly connected to one side of the U-shaped seat, one end of the adjusting screw is rotatably connected to the slider, two symmetrically arranged transverse holes are provided on one side of the slider, a round rod is inserted in the transverse hole, and the round rod is installed in the U-shaped seat, the tensioning part includes a top plate, a top plate is installed on the upper end of the suspension rope, a second spring is provided between the top plate and the vertical hole, the second spring is sleeved on the suspension rope, and a limiting part is installed between the top plate and the L-shaped plate.

[0010] Specifically, two connecting ears are symmetrically installed on the lower surface of the U-shaped seat, and two positioning ears are respectively installed on the two connecting ears through bolts, and the positioning ears are installed on the top of the laser marking instrument.

[0011] Specifically, the limiting member includes a limiting rod, a limiting hole is provided at the edge of the upper surface of the top plate, a vertically arranged limiting rod is inserted in the limiting hole, and the lower end of the limiting rod is connected and fixed to the L-shaped plate.

[0012] Specifically, the middle position of the lower surface of the top plate is recessed upward to form an upper positioning hole, the upper surface of the slider is recessed downward to form a lower positioning hole, and the two ends of the suspension rope are respectively installed in the upper positioning hole and the lower positioning hole.

[0013] Specifically, a pressure block is provided on the top of a vertical part of the U-shaped seat, an upper semicircular groove is provided in the middle position of the lower surface of the pressure block, and a lower semicircular groove matching the upper semicircular groove is provided in the area of ​​the U-shaped seat covered by the pressure block, and an internal thread matching the adjusting screw is processed on the inner wall of the circular space formed by the lower semicircular groove and the upper semicircular groove, and the adjusting screw is threadedly connected in the space formed by the lower semicircular groove and the upper semicircular groove, and the pressure block is connected and fixed to the U-shaped seat by two connecting screws, and two first blind holes are provided on a side of the pressure block facing the slider, and two second blind holes matching the first blind holes are provided on a vertical surface of the U-shaped seat facing the pressure block, and the two ends of the round rod are respectively inserted in the first blind hole and the second blind hole.

[0014] Beneficial effects of the present invention: 1. Connect the two ends of the lifting rope to the top plate and the slider respectively, and then keep the lifting rope in a taut state under the action of the second spring rebound force. When adjusting the inclination of the lifting rope, the distance between the top plate and the L-shaped plate changes, so that the laser marking instrument can be lifted by the lifting rope without affecting the rotation of the laser marking instrument around the horizontal locking screw.

[0015] 2. Under the action of the first spring rebound force, the lifting rod is in contact with the horizontal plate, and then the laser marking instrument is supported by the two lifting rods and suspended by the suspension rope. When the horizontal locking screw or the longitudinal locking screw is loosened, the laser marking instrument is prevented from suddenly tilting or colliding, thereby protecting the laser marking instrument.

[0016] 3. Loosen the transverse locking screw, and then turn the adjusting screw. The adjusting screw drives the slider to move along the U-shaped seat. At the same time, the round rod slides in the transverse hole relative to the slider to limit the movement trajectory of the slider. When the relative position of the slider and the U-shaped seat changes, the inclination angle of the lifting rope changes. At this time, under the traction of the inclined lifting rope, the laser marking instrument rotates around the transverse locking screw. After loosening the longitudinal locking screw, use the handle to drive the end plate to rotate around the longitudinal locking screw. At this time, the length of the two lifting rods in the vertical tube changes. In summary, it does not affect the adjustment of the angle of the laser marking instrument.

[0017] 4. Insert the upper end of the lifting rod into the limit frame to prevent the upper end of the lifting rod from being separated and misaligned from the horizontal plate. When the laser marking instrument rotates around the column, the laser marking instrument drives the rotating plate to rotate around the column through the suspension rope, L-shaped plate, limit frame, lifting rod and other components, thereby not affecting the adjustment of the direction of the laser marking instrument.

[0018] 5. When the laser line marker needs to be rotated around the longitudinal locking screw, first open the air bleed valve corresponding to the pressurized lifting rod, and control the opening of the air bleed valve to make the air flow channel opened by the air bleed valve smaller. Then, during the rotation of the laser line marker around the longitudinal locking screw, the first spring corresponding to the pressurized lifting rod will drive the corresponding piston to move downward, and the piston squeezes the air in the lower space of the vertical cylinder, so that the air in the lower space of the vertical cylinder is slowly discharged from the air bleed valve. On the one hand, the laser line marker can be rotated around the longitudinal locking screw at a slower speed. On the other hand, the upward force of the first spring is reduced, thereby reducing the resistance of the laser line marker to rotate around the longitudinal locking screw, and finally achieving fine-tuning of the laser line marker and reducing the difficulty of adjusting the laser line marker.

[0019] 6. Use connecting screws to connect the pressure block and the U-shaped seat, and make the adjusting screw threadedly connected in the space formed by the upper semicircular groove and the lower semicircular groove. When small debris enters the thread patterns in the upper semicircular groove and the lower semicircular groove, remove the connecting screws and pull the two ends of the round rod out of the first blind hole and the second blind hole respectively, so as to quickly clean up the small debris in the thread patterns and quickly deal with the situation where the laser marking instrument is blocked from adjusting on the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 This is a schematic diagram of the structure of a laser marking device for engineering inspection according to the present invention; Figure 2 This is a stereoscopic view of a laser marking device for engineering inspection according to the present invention from another viewing angle; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 for Figure 1 Enlarged view of point B in the middle; Figure 5 It is a schematic diagram of the assembly of an upper ear plate, a supporting plate and a laser marking instrument in an engineering inspection laser marking device of the present invention; Figure 6 It is a schematic diagram of the assembly of a vertical cylinder, a rotating plate, an end plate, a tripod and a column in a laser marking device for engineering inspection of the present invention; Figure 7 It is a schematic diagram of the assembly of a limit frame, a horizontal plate, a limit rod, an L-shaped plate and a U-shaped plate in a laser marking device for engineering inspection of the present invention; Figure 8 It is a schematic diagram of the assembly of a lifting rod, a disc, a first spring, a piston, a threaded cover and a vertical cylinder in a laser marking device for engineering inspection of the present invention; Fig. 9 It is a schematic diagram of the assembly of a slider and a U-shaped seat in a laser marking device for engineering inspection of the present invention; Fig.10 It is a schematic diagram of the assembly of a pressure block and a U-shaped seat in a laser marking device for engineering inspection of the present invention; In the figure: 1, laser marking instrument, 2, support plate, 3, end plate, 4, handle, 5, U-shaped plate, 6, positioning ring, 7, rotating plate, 8, column rod, 9, tripod, 10, air release valve, 11, threaded cover, 12, vertical cylinder, 13, lifting rod, 14, limit frame, 15, horizontal plate, 16, horizontal locking screw, 17, L-shaped plate, 18, lifting rope, 19, longitudinal locking screw, 20, U-shaped seat, 21, horizontal sleeve, 22, Round rod, 23, slider, 24, connecting screw, 25, pressure block, 26, adjusting screw, 27, positioning ear, 28, connecting ear, 29, limit rod, 30, top plate, 31, second spring, 32, upper ear plate, 33, lower ear plate, 34, vertical hole, 35, disc, 36, first spring, 37, piston, 38, horizontal hole, 39, lower semicircular groove, 40, second blind hole, 41, upper semicircular groove, 42, first blind hole. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] Embodiment 1: The locking screw is used to keep the laser marking instrument 1 in position unchanged, which relies on static friction. When the locking screw is loosened, the laser marking instrument 1 is prone to suddenly tilt due to loss of balance, which may induce the laser marking instrument 1 to collide with the tripod 9. In addition, the magnitude of the static friction is uncontrollable. In the process of carrying, the laser marking instrument 1 may tilt or collide due to insufficient static friction, which increases the probability of damage to the laser marking instrument 1 during use and carrying. See also Figure 1-Figure 9 The present invention provides a technical solution: a laser marking device for engineering inspection, comprising a laser marking instrument 1, a support plate 2 is connected and fixed at the bottom of the laser marking instrument 1, an upper ear plate 32 evenly arranged is connected and fixed at the edge of one side of the lower surface of the support plate 2, a column 8 is arranged directly below the support plate 2, a foldable tripod 9 is installed at the lower end of the column 8, a horizontal sleeve 21 is rotatably installed at the upper end of the column 8, a longitudinal locking screw 19 is connected to the inner thread of the horizontal sleeve 21, an end plate 3 is sleeved at one end of the longitudinal locking screw 19, a longitudinal locking nut threadedly connected to the longitudinal locking screw 19 is arranged on the side of the end plate 3 away from the horizontal sleeve 21, and the end plate 3 is provided with a longitudinal locking nut threadedly connected to the longitudinal locking screw 19. A plurality of lower ear plates 33 matched with the upper ear plates 32 are evenly installed at one end of the support plate 2, and the plurality of lower ear plates 33 are alternately arranged with the plurality of upper ear plates 32. The upper ear plates 32 and the lower ear plates 33 are connected with fasteners formed by transverse locking screws 16 and transverse locking nuts. A handle 4 is installed on the outer surface of the end plate 3. The transverse locking nut and the transverse locking screw 16 cooperate with each other to limit the relative position of the upper ear plate 32 and the lower ear plate 33. The longitudinal locking nut and the longitudinal locking screw 19 cooperate with each other to keep the relative position of the end plate 3 and the transverse sleeve 21 unchanged, thereby facilitating the adjustment of the angle of the laser marking instrument 1.

[0023] A U-shaped plate 5 is installed at the lower position of the outer surface of the end plate 3, and the column 8 is inserted in the U-shaped plate 5. Cross plates 15 are installed at both ends of the U-shaped plate 5. A horizontally arranged rotating plate 7 is provided on the lower side of the U-shaped plate 5. The rotating plate 7 is sleeved on the column 8 and the rotating plate 7 is rotatably connected to the column 8. A circular opening is opened in the middle position of the upper surface of the rotating plate 7, and the column 8 passes through the circular opening. Positioning rings 6 are provided on the upper and lower sides of the circular opening. The positioning ring 6 is in contact with the rotating plate 7. The positioning ring 6 is sleeved on the column 8 and is connected and fixed to the column 8. The two positioning rings 6 cooperate with each other to keep the relative position of the rotating plate 7 and the column 8 unchanged, and do not affect the rotation of the rotating plate 7 around the column 8.

[0024] Two circular holes are symmetrically provided on the upper surface of the rotating plate 7, and vertical cylinders 12 are installed in the two circular holes. A guide hole is provided at the upper end of the vertical cylinder 12, and a lifting rod 13 is inserted in the guide hole. Limit frames 14 are installed on the lower surfaces of the two horizontal plates 15, and the limit frames 14 are arranged along the length direction of the horizontal plate 15. The upper ends of the two lifting rods 13 extend into the two limit frames 14 respectively, so that the upper ends of the lifting rods 13 are inserted in the limit frames 14 to prevent the upper ends of the lifting rods 13 from being separated and misaligned from the horizontal plates 15. When the laser marking instrument 1 rotates around the column 8, the laser marking instrument 1 drives the rotating plate 7 to rotate around the column 8 through the suspension rope 18, the L-shaped plate 17, the limit frame 14, the lifting rod 13 and other components, thereby not affecting the adjustment of the direction of the laser marking instrument 1.

[0025] An L-shaped plate 17 is installed at one end of a horizontal plate 15 away from the U-shaped plate 5. The horizontal part of the L-shaped plate 17 extends to the upper side of the laser marking instrument 1. A vertical hole 34 arranged concentrically with the column rod 8 is opened on the upper surface of the horizontal part of the L-shaped plate 17. A suspension rope 18 is inserted in the vertical hole 34. A top plate 30 is installed on the upper end of the suspension rope 18. A second spring 31 is provided between the top plate 30 and the vertical hole 34. The second spring 31 is sleeved on the suspension rope 18. A limiting hole is opened at the edge of the upper surface of the top plate 30. A vertically arranged limiting rod 29 is inserted in the limiting hole. The lower end of the limiting rod 29 is connected and fixed to the L-shaped plate 17. The limiting rod 29 cooperates with the limiting hole to limit the moving trajectory of the top plate 30, so that the shape of the second spring 31 is limited.

[0026] A disc 35 is installed at one end of the lifting rod 13 in the vertical cylinder 12, and the disc 35 is slidably installed in the vertical cylinder 12. A first spring 36 in a compressed state is installed on the lower side of the disc 35. A detachable U-shaped seat 20 is installed on the top of the laser marking instrument 1, wherein two connecting ears 28 are symmetrically installed on the lower surface of the U-shaped seat 20, and two positioning ears 27 are respectively installed on the two connecting ears 28 by bolts. The positioning ears 27 are installed on the top of the laser marking instrument 1, and a slider 23 is slidably installed in the U-shaped seat 20. The lower end of the suspension rope 18 is connected and fixed to the slider 23, wherein the middle position of the lower surface of the top plate 30 is recessed upward to form an upper positioning hole, and the upper surface of the slider 23 is recessed downward to form a lower positioning hole, so that the two ends of the suspension rope 18 are respectively installed in the upper positioning hole and the lower positioning hole. In the positioning hole, the stability of the connection between the suspension rope 18 and the slider 23 and the top plate 30 is improved. An adjusting screw 26 is threadedly connected to one side of the U-shaped seat 20. One end of the adjusting screw 26 is rotatably connected to the slider 23. Two symmetrically arranged transverse holes 38 are opened on one side of the slider 23. A round rod 22 is inserted in the transverse hole 38. The round rod 22 is installed in the U-shaped seat 20, so that the two ends of the suspension rope 18 are respectively connected to the top plate 30 and the slider 23, and then the suspension rope 18 is in a tensioned state under the action of the rebound force of the second spring 31. When the inclination of the suspension rope 18 is adjusted, the distance between the top plate 30 and the L-shaped plate 17 changes, so that when the suspension rope 18 lifts the laser marker 1, it does not affect the rotation of the laser marker 1 around the transverse locking screw 16.

[0027] Under the action of the rebound force of the first spring 36, the lifting rod 13 is brought into contact with the horizontal plate 15, and then the laser marking instrument 1 is supported by the two lifting rods 13 and suspended by the suspension rope 18. When the transverse locking screw 16 or the longitudinal locking screw 19 is loosened, the laser marking instrument 1 is prevented from being suddenly tilted or collided, and the laser marking instrument 1 is protected. The transverse locking screw 16 is loosened, and then the adjusting screw 26 is turned. The adjusting screw 26 drives the slider 23 to move along the U-shaped seat 20, and at the same time, the round rod 22 is rotated. The slider 23 slides in the transverse hole 38 to limit the moving trajectory of the slider 23. When the relative position of the slider 23 and the U-shaped seat 20 changes, the inclination angle of the suspension rope 18 changes. At this time, under the pulling of the inclined suspension rope 18, the laser marking instrument 1 rotates around the transverse locking screw 16. After loosening the longitudinal locking screw 19, the handle 4 is used to drive the end plate 3 to rotate around the longitudinal locking screw 19. At this time, the length of the two lifting rods 13 in the vertical tube 12 is changed. In summary, the adjustment of the angle of the laser marking instrument 1 is not affected.

[0028] Embodiment 2: The horizontal plate 15 is made to squeeze the first spring 36 through the lifting rod 13, and manpower is required to overcome the elastic force of the first spring 36, so that the longitudinal adjustment of the laser marking instrument 1 is not smooth, and the first spring 36 always generates elastic force, so that when the longitudinal locking screw 19 is tightened, the laser marking instrument 1 will slightly rotate around the longitudinal locking screw 19 due to unbalanced force, which increases the difficulty of adjusting the laser marking instrument 1.

[0029] See also Figure 1 , Figure 2 , Figure 6 and Figure 8 A piston 37 is provided at the lower side of the first spring 36. The piston 37 is slidably installed in the vertical cylinder 12. The lower end of the vertical cylinder 12 is open. The lower end of the vertical cylinder 12 is threadedly connected with a threaded cover 11. The lower surface of the threaded cover 11 is provided with an air release valve 10. When the laser marking instrument 1 needs to be rotated around the longitudinal locking screw 19, the air release valve 10 corresponding to the pressurized lifting rod 13 is first opened, and the opening of the air release valve 10 is controlled to make the air flow channel opened by the air release valve 10 smaller. In the process of the laser marking instrument 1 rotating around the longitudinal locking screw 19, the pressurized lifting rod 13 is compressed. The first spring 36 corresponding to the lifting rod 13 will drive the corresponding piston 37 to move downward, and the piston 37 squeezes the air in the lower space of the vertical cylinder 12, so that the air in the lower space of the vertical cylinder 12 is slowly discharged from the air release valve 10. On the one hand, it enables the laser line marker 1 to rotate around the longitudinal locking screw 19 at a slower speed. On the other hand, the upward force of the first spring 36 is reduced, thereby reducing the resistance of the laser line marker 1 to rotate around the longitudinal locking screw 19, ultimately achieving fine-tuning of the laser line marker 1 and reducing the difficulty of adjusting the laser line marker 1.

[0030] Embodiment 3: By machining a screw hole on the U-shaped seat 20 and matching the screw hole on the U-shaped seat 20, the screw hole on the U-shaped seat 20 is annular. When small debris falls on the adjusting screw 26 and enters the screw hole during outdoor use, it will affect the smooth rotation of the adjusting screw 26, and finally affect the adjustment of the laser angle; See also Figure 3 , Fig. 9 and Fig.10 A pressing block 25 is provided at the top of a vertical portion of the U-shaped seat 20, and an upper semicircular groove 41 is provided at the middle position of the lower surface of the pressing block 25. A lower semicircular groove 39 matching the upper semicircular groove 41 is provided in the area of ​​the U-shaped seat 20 covered by the pressing block 25. An internal thread matching the adjusting screw 26 is processed on the inner wall of the circular space formed by the lower semicircular groove 39 and the upper semicircular groove 41. The adjusting screw 26 is threadedly connected in the space formed by the lower semicircular groove 39 and the upper semicircular groove 41. The pressing block 25 is connected and fixed to the U-shaped seat 20 by two connecting screws 24. Two first blind holes 42 are provided on one side of the pressing block 25 facing the slider 23. On a vertical surface of the U-shaped seat 20 facing the pressing block 25, Two second blind holes 40 are provided to match the first blind holes 42, and the two ends of the round rod 22 are respectively inserted into the first blind hole 42 and the second blind hole 40, and the pressing block 25 and the U-shaped seat 20 are connected by connecting screws 24, and the adjusting screw 26 is threadedly connected in the space formed by the upper semicircular groove 41 and the lower semicircular groove 39. When small debris enters the thread patterns in the upper semicircular groove 41 and the lower semicircular groove 39, after removing the connecting screws 24, the two ends of the round rod 22 are respectively pulled out from the first blind hole 42 and the second blind hole 40, so as to quickly clean up the small debris in the thread patterns, so that the situation where the adjustment of the laser marking instrument 1 is blocked can be quickly dealt with on the construction site.

[0031] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A laser marking device for engineering inspection, comprising a laser marking instrument (1), characterized in that: The bottom of the laser marking instrument (1) is connected and fixed with a support plate (2), and an evenly arranged upper ear plate (32) is connected and fixed at the edge of one side of the lower surface of the support plate (2). A column (8) is provided directly below the support plate (2), and a foldable tripod (9) is installed at the lower end of the column (8). A transverse sleeve (21) is rotatably installed at the upper end of the column (8), and a longitudinal locking screw (19) is connected to the inner thread of the transverse sleeve (21). An end plate (3) is sleeved on one end of the longitudinal locking screw (19), and a side of the end plate (3) facing away from the transverse sleeve (21) is provided with a longitudinal locking screw (19). A longitudinal locking nut is threadedly connected to the locking screw (19); a plurality of lower ear plates (33) matching with the upper ear plates (32) are evenly installed on one end of the end plate (3) facing the support plate (2); the plurality of lower ear plates (33) are alternately arranged with the plurality of upper ear plates (32); the upper ear plates (32) and the lower ear plates (33) are connected to each other through a fastener formed by a transverse locking screw (16) and a transverse locking nut; a handle (4) is installed on the outer surface of the end plate (3); and an anti-skew member for limiting the position of the laser marking instrument (1) is installed on the upper end of the column rod (8).

2. The engineering inspection laser marking device according to claim 1, characterized in that: The anti-skew component comprises a U-shaped plate (5), a U-shaped plate (5) is installed at a lower position of the outer surface of the end plate (3), the column (8) is inserted in the U-shaped plate (5), and a transverse plate (15) is installed at both ends of the U-shaped plate (5). A lifting member for preventing the laser marking instrument (1) from rotating around the longitudinal locking screw (19) is provided on the lower side of the U-shaped plate (5), and an L-shaped plate (17) is installed at one end of the transverse plate (15) away from the U-shaped plate (5), and the horizontal portion of the L-shaped plate (17) extends to the upper side of the laser marking instrument (1), and a vertical hole (34) arranged concentrically with the column (8) is opened on the upper surface of the horizontal portion of the L-shaped plate (17), and a suspension rope (18) is inserted in the vertical hole (34), and a tensioning member is installed at the upper end of the suspension rope (18), and the lower end of the suspension rope (18) is connected to the laser marking instrument (1) through a connecting member.

3. The engineering inspection laser marking device according to claim 2, characterized in that: The lifting member comprises a rotating plate (7), a horizontally arranged rotating plate (7) is provided on the lower side of the U-shaped plate (5), the rotating plate (7) is sleeved on the column (8) and the rotating plate (7) is rotatably connected to the column (8), two circular holes are symmetrically provided on the upper surface of the rotating plate (7), vertical cylinders (12) are installed in the two circular holes, a force unloading member is installed in the lower position of the vertical cylinder (12), a guide hole is provided at the upper end of the vertical cylinder (12), and a lifting rod (12) is inserted in the guide hole. 3) A limit frame (14) is installed on the lower surface of the two horizontal plates (15), and the limit frame (14) is arranged along the length direction of the horizontal plate (15). The upper ends of the two lifting rods (13) extend into the two limit frames (14) respectively. A disc (35) is installed at one end of the lifting rod (13) in the vertical tube (12). The disc (35) is slidably installed in the vertical tube (12), and a first spring (36) in a compressed state is installed on the lower side of the disc (35).

4. The engineering inspection laser marking device according to claim 3, characterized in that: The unloading member comprises a piston (37). The piston (37) is provided at the lower side of the first spring (36). The piston (37) is slidably mounted in the vertical cylinder (12). The lower end of the vertical cylinder (12) is open. The lower end of the vertical cylinder (12) is threadedly connected to a threaded cover (11). The lower surface of the threaded cover (11) is mounted with an air release valve (10).

5. The engineering inspection laser marking device according to claim 3, characterized in that: A circular opening is provided in the middle of the upper surface of the rotating plate (7), and the column (8) passes through the circular opening. Positioning rings (6) are provided on the upper side and the lower side of the circular opening. The positioning rings (6) are in contact with the rotating plate (7). The positioning rings (6) are sleeved on the column (8) and are connected and fixed to the column (8).

6. The engineering inspection laser marking device according to claim 2, characterized in that: The connecting member comprises a U-shaped seat (20), a detachable U-shaped seat (20) is installed on the top of the laser marking instrument (1), a slider (23) is slidably installed in the U-shaped seat (20), the lower end of the suspension rope (18) is connected and fixed to the slider (23), a side surface of the U-shaped seat (20) is threadedly connected to an adjusting screw (26), one end of the adjusting screw (26) is rotatably connected to the slider (23), and one side surface of the slider (23) is provided with two symmetrically arranged A horizontal hole (38) is disposed in the horizontal hole (38), a round rod (22) is inserted in the horizontal hole (38), the round rod (22) is installed in the U-shaped seat (20), the tensioning member comprises a top plate (30), the top plate (30) is installed on the upper end of the suspension rope (18), a second spring (31) is provided between the top plate (30) and the vertical hole (34), the second spring (31) is sleeved on the suspension rope (18), and a limiting member is installed between the top plate (30) and the L-shaped plate (17).

7. The engineering inspection laser marking device according to claim 6, characterized in that: Two connecting ears (28) are symmetrically mounted on the lower surface of the U-shaped seat (20), and two positioning ears (27) are respectively mounted on the two connecting ears (28) via bolts, and the positioning ears (27) are mounted on the top of the laser marking instrument (1).

8. The engineering inspection laser marking device according to claim 6, characterized in that: The limiting member comprises a limiting rod (29); a limiting hole is provided at the edge of the upper surface of the top plate (30); a vertically arranged limiting rod (29) is inserted into the limiting hole; the lower end of the limiting rod (29) is connected and fixed to the L-shaped plate (17).

9. The engineering inspection laser marking device according to claim 6, characterized in that: The middle portion of the lower surface of the top plate (30) is recessed upward to form an upper positioning hole, the upper surface of the sliding block (23) is recessed downward to form a lower positioning hole, and the two ends of the suspension rope (18) are respectively installed in the upper positioning hole and the lower positioning hole.

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