A multi-directional laser plummet

Abstract

The application discloses a multi-directional laser plummet, and belongs to the technical field of civil surveying and mapping instruments. The multi-directional laser plummet comprises a main body, an eyepiece arranged on the top of the main body, an objective arranged horizontally below the main body, and a laser module arranged in the middle of the main body. An outer shell is arranged on the outer side of the main body, and a long balance bubble is arranged on the plane of the main body. The mounting seat composed of the counterweight seat, the adjusting piece one and the bottom plate improves the ground adaptability and the shock resistance. The conical thimble of the adjusting piece one is inserted into the center of the annular steel ball array of the bottom plate to replace the traditional rigid surface contact with point contact. The structure can effectively block the transmission of ground vibration upward while leveling, prevent the disorderly shaking of the laser source, and thus ensure the accuracy and stability of long-distance line marking.

Description

Technical Field

[0001] This invention belongs to the field of civil surveying instruments technology, specifically relating to a multi-directional laser plumb line. Background Technology

[0002] The multi-directional laser plumb line is a high-precision measuring instrument that uses a visible laser beam to generate a precise plumb line. It is an upgrade from the traditional plumb line, which can not only emit standard vertical lasers, but also flexibly project onto horizontal and vertical planes, and even perform multi-angle slope adjustment (such as ±15% biaxial slope), realizing multiple uses in one machine.

[0003] In use, the operator places the instrument on the measurement benchmark and then levels it to emit a vertical laser line. Traditional tripods or fixed bases are difficult to use to provide stable support on uneven ground, resulting in an unstable center of gravity and affecting the accuracy of the line drawing. At the same time, the construction site environment is complex and often accompanied by ground vibrations from heavy machinery operations. Existing plumb line bases are usually in rigid contact with the ground or supported by simple threads. When external vibrations are transmitted to the instrument body, they cause the laser emission source to vibrate or shift slightly. In long-distance (such as hundreds of meters) line drawing operations, these slight vibrations are significantly amplified, causing the laser line projected on the wall to sway or become blurred, which seriously reduces the accuracy of measurement and construction efficiency. Therefore, a multi-directional laser plumb line is provided. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a multi-directional laser plumb line.

[0005] The technical solution adopted to solve the above technical problems is: A multi-directional laser plumb line includes: The main body includes an eyepiece located at the top, a horizontally arranged objective lens located below the main body, and a laser module located in the middle section of the main body; The outer shell is fitted onto the outside of the main body, and a long balance bubble is provided on the plane of the main body; The mounting base includes a counterweight base, which is rotatably connected to the outer shell via a connecting frame. A driver is provided between the counterweight base and the outer shell, which can drive the outer shell to rotate relative to the counterweight base. A circular balance bubble is provided on the plane of the counterweight base. Three equally spaced screw holes are provided on the edge of the counterweight base. An adjusting component is provided at each screw hole, the length of which is adjustable. A base plate is provided at the bottom of the adjusting component, and the angle between the adjusting component and the base plate can be changed. The adjusting component includes a bolt, which is threadedly installed in the middle of a screw hole seat. A middle sleeve is installed at the bottom end of the bolt, and a pin is installed at the bottom end of the middle sleeve. A receiving groove is provided on the top surface of the base plate corresponding to the adjusting component. The receiving groove contains a ring array of steel balls. A spinning ring is provided above the steel balls. The outer circumference of the spinning ring is threadedly connected to the inner circumference of the receiving groove. The bottom end of the pin is conical and is inserted from top to bottom into the center of the ring array of steel balls. In use, place the base plate at the positioning base point. If the ground at the base point is uneven, the depth of the bolt screwed into the screw hole can be changed by rotating the bolt. This changes the length of the adjusting piece between the counterweight and the base plate, adjusting the distance between the three screw holes and the base plate. Combined with the indications of the circular and long balance bubbles, the top surface of the counterweight can be made parallel to the horizontal plane, adapting to ground base points with different flatness and inclination angles. Furthermore, the adjusting piece contacts the pin and the circular array of steel balls, ensuring stable contact even if the adjusting piece is not vertical. This allows for the application of multi-directional excitation... When aligning the laser line, the actuator can rotate the outer casing and main body at 90-degree intervals, projecting mutually perpendicular laser lines onto the ground and wall for easy positioning. Simultaneously, if other construction work is underway, the vibration transmitted to the base plate is effectively suppressed because the contact area between the ejector pin and the steel ball is extremely small and independent. This vibration is transmitted to the main body via the adjustment mechanism, ensuring the main body's stability and preventing laser beam wobbling. Especially when projecting lines over long distances, the laser beam's extension direction is more precise, effectively reducing the impact of on-site vibration on the accuracy of the projection.

[0006] Furthermore, the upper threaded hole is provided at the center of the top end of the middle sleeve, and the lower threaded hole is provided at the center of the bottom end of the middle sleeve. The upper threaded hole and the lower threaded hole are coaxially connected, and the pitch of the upper threaded hole is smaller than the pitch of the lower threaded hole.

[0007] Through the above technical solution, in order to make fine adjustment of the length of the adjusting component, upper and lower threaded holes are also opened in the middle of the middle sleeve. In this way, the bolt and the ejector pin can be flexibly assembled. When damaged, the bolt and the ejector pin can be replaced separately. Moreover, the distance between the bolt and the ejector pin can be adjusted by rotating the middle sleeve alone without rotating the bolt, so as to adjust the level of the counterweight seat more precisely.

[0008] Furthermore, two of the three screw hole seats are provided with adjustment element one, and the other screw hole seat is equipped with adjustment element two. The counterweight seat is detachably connected to the base plate through adjustment element two.

[0009] The above technical solution discloses a new mounting base structure. In the existing arrangement of the three adjustment components, the base plate and the counterweight are completely independent, which makes them prone to loss during transportation as they need to be handled separately. Therefore, an adjustment component is set up. The adjustment component can change the angle and length to achieve the basic function of the adjustment component. At the same time, the adjustment component can also connect the counterweight and the base plate into a whole, which is convenient for transportation and carrying and prevents the base plate from being lost. Furthermore, the adjustment component is a detachable structure, which can be disassembled and replaced separately when the base plate is damaged, without affecting the convenience of later maintenance.

[0010] Furthermore, the second adjusting component includes a screw rod, which is installed through a screw hole seat. A ball head is installed at the bottom end of the screw rod, and a screw sleeve is fitted in the middle section of the screw rod. An external threaded ring is fitted on the outer side of the ball head, and a ring plate is fixedly installed at the bottom end of the external threaded ring. A pin is installed through the ring plate. A receiving groove is opened on the top surface of the base plate corresponding to the second adjusting component. The receiving groove contains two steel balls arranged in a ring array. Horizontally extending protrusions are symmetrically installed on the edge of the ring plate. A bracket is fixedly installed on the base plate directly opposite the position of the protrusions. A notch is opened in the middle of the bracket for the protrusions to engage.

[0011] The above technical solution discloses a specific configuration of the adjusting component two. The screw is connected to the screw hole seat via a thread, allowing rotation to change the position of the screw and the screw hole seat. Simultaneously, the ejector pin two adopts a stepped cylindrical structure with a thicker upper section and a thinner lower section, inserted into the ring plate from top to bottom. During replacement, the ring plate can be directly rotated 180 degrees to remove the ejector pin two for individual maintenance. When it is necessary to change the angle of the ejector pin two, it can be directly swung to tighten the sleeve onto the outside of the external threaded ring, thus pressing the bottom surface of the ball head against the top surface of the ejector pin two. After fixing the screw and the second ejector pin, even after the counterweight is leveled, the second ejector pin can still be perpendicular to the base plate, ensuring that it is centered in the center of the annular array of the second steel ball, resulting in better contact stability. Furthermore, the protrusion at the edge of the ring plate is engaged in the notch, which can connect the second adjusting piece to the base plate as one unit. At the same time, the inner diameter of the notch is larger than the size of the protrusion. After being placed on the ground, the protrusion is suspended in the notch and will not contact the bracket, ensuring that the second ejector pin and the second ejector pin can still stably play the role of isolating vibration transmission.

[0012] Furthermore, the bottom end of the second ejector pin is conical, the top end of the second ejector pin is provided with an arc groove that mates with the ball head, the top end of the external threaded ring is equipped with a ring array of lugs, the upper half of the inner wall of the sleeve is provided with a sloping pressure surface, the lower half of the inner wall of the sleeve is provided with a threaded groove, and the sleeve can press the lugs against the surface of the ball head by rotating downward along the outer wall of the external threaded ring.

[0013] Through the above technical solution, in order to ensure a firm connection between the split screw and the ejector pin, when tightening the sleeve, the elastic lug will be squeezed and constricted by the inclined pressure surface, thereby increasing the contact stability between the sleeve, lug and ball head. When it is necessary to separate the external thread ring and the ball head, the sleeve is removed first, and then the ball head is pulled out from the external thread ring. At this time, the lug will be squeezed away from each other by the ball head, which does not affect the basic function of being detachable and replaceable.

[0014] Furthermore, the driver includes a motor, which is fixedly connected to the inner wall of the housing. A thick gear is installed at the bottom end of the motor shaft, and a stabilizer is installed in the middle section of the motor shaft. The stabilizer is fixedly connected to the inner wall of the housing, and an internal gear ring is provided at the top of the counterweight corresponding to the thick gear.

[0015] The above technical solution discloses a specific configuration of a driver. The motor is a servo motor, which can control the rotation angle. Through the meshing of the thick gear and the internal gear ring, when the thick gear rotates, it can drive the outer shell to rotate relative to the counterweight. The center of the internal gear ring coincides with the center line of the main body, achieving centered rotation. A laser-emitting objective lens produces intersecting lines. Because the motor shaft is vertical and the thick gear and the internal gear ring are horizontal, a horizontal force will act on the motor shaft position during rotation. A separate stabilizer is set up and connected to the motor shaft through a bearing, which can support the motor shaft radially and ensure that the motor can work stably for a long time.

[0016] Furthermore, the connecting frame includes an inner frame, which is fixedly connected to the inner wall of the outer shell. A through hole is provided in the middle of the inner frame, through which a threaded wire is installed. An upper flat bearing is installed between the threaded wire and the top surface of the inner frame. A central hole is provided in the middle of the counterweight seat, through which the threaded wire extends to the bottom surface of the counterweight seat. A nut is installed at the lower part of the threaded wire, and a lower flat bearing is installed between the nut and the bottom surface of the counterweight seat.

[0017] The above technical solution discloses a specific configuration of a connecting frame. An inner frame resembling a three-pointed star is installed at the bottom of the outer shell, which will not affect the installation of the motor. At the same time, a thread is installed in the middle of the inner frame, passing through the counterweight seat from top to bottom. During installation, tightening the nut from the bottom connects the outer shell and the counterweight seat. Meanwhile, the upper and lower plane bearings allow sliding contact between the thread and the inner frame, and between the thread and the counterweight seat, reducing the frictional resistance of the contact surfaces and ensuring smooth rotation of the outer shell.

[0018] Furthermore, a rubber column is fixedly installed on the bottom surface of one end of the long balancing bubble, an installation groove is provided on the outer shell corresponding to the long balancing bubble, an insertion hole is opened on the outer shell facing the rubber column, a pressure plate is fixedly installed on the other end of the long balancing bubble, a spring frame is installed on the installation groove facing the pressure plate, a screw is screwed on the middle of the pressure plate, and an internal thread hole is opened on the pressure plate corresponding to the screw.

[0019] The above technical solution discloses the installation structure of a long balancing bubble. One end of the long balancing bubble is equipped with a flexible rubber column, and the other end is connected to a spring holder through a pressure plate and screws. The lower two-thirds of the rubber column can be inserted into the insertion hole, and the spring holder is fixed to the bottom surface of the mounting groove. Before use, the device can be placed on a flat surface, and the screws can be loosened or tightened to press down or lift up the long balancing bubble. During the process, the spring holder can deform synchronously to compensate for support, calibrate the long balancing bubble, and replace the long balancing bubble individually to ensure the stability of the device in long-term use and improve maintainability.

[0020] Furthermore, the long balance bubble has a skirt at its edge, the skirt is made of elastic material, and the width of the skirt is greater than the opening width of the mounting groove.

[0021] With the above technical solution, because of the detachable structure of the long balance bubble, the width of the mounting groove must be greater than the width of the long balance bubble. If dust enters the gap between the mounting groove and the long balance bubble, the long balance bubble will be stuck. If water enters the gap, the rubber long balance bubble will be in a humid environment for a long time, which will accelerate the aging of the long balance bubble and affect its service life. Therefore, an elastic skirt is installed around the long balance bubble, and the skirt is used to seal the gap between the long balance bubble and the mounting groove to prevent dust and water from entering.

[0022] Furthermore, the main body is provided with an eyepiece adjustment knob in the middle section, an objective lens adjustment knob at the objective lens, and a rotary button at the bottom of the main body. The rotary button is electrically connected to the driver. The outer shell has through openings corresponding to the eyepiece adjustment knob, objective lens adjustment knob, and rotary button. The lower part of the outer shell is provided with a scale ring, and the upper part of the outer shell is provided with a handle.

[0023] With the above technical solution, in order to adapt to wall line drawing at different distances, the eyepiece focal length can be changed by adjusting the eyepiece adjustment knob, which can be used for adjustable focusing. The objective lens adjustment knob can change the focal length of the objective lens, which can be used for adaptive observation of objects at different distances to ensure the accuracy of line drawing. There are two rotary buttons, one to power the driver and the other to de-power the driver and control the rotation of the outer shell. The handle is convenient for carrying.

[0024] The beneficial effects of this invention are as follows: (1) The present invention improves ground adaptability and seismic resistance by using a mounting base composed of a counterweight, an adjusting component 1 and a base plate. The conical pin of the adjusting component 1 is inserted into the center of the annular steel ball array on the base plate, replacing the traditional rigid surface contact with point contact. This structure can effectively block the upward transmission of ground vibration while leveling, prevent the laser source from shaking disorderly, and thus ensure the accuracy and stability of long-distance wire drawing. (2) The present invention improves the leveling accuracy and maintenance convenience by adopting a differential thread design in the middle sleeve of the adjusting part one. The two ends of the middle sleeve are provided with coaxial threaded holes with different pitches. By using the connection structure with different pitches, the middle sleeve can be rotated to achieve fine adjustment. In addition, the split threaded connection allows each component to be disassembled and replaced independently, which not only avoids installation interference, but also greatly reduces the later maintenance cost and improves the flexibility of use. (3) The present invention takes into account both portability and stability through the quick-release adjustment component 2. The elastic support is pressed by the inner inclined pressure surface of the screw sleeve to lock the angle between the ball head and the ejector pin 2, ensuring that it is always perpendicular to the base plate. When storing, the ring plate protrusion is inserted into the notch of the base plate to connect the components into one. This design effectively avoids the loss of parts and ensures stable contact during operation, achieving the unity of quick deployment and stable support. Attached Figure Description

[0025] Figure 1 This is a first-view structural diagram of the present invention; Figure 2 This is a second-view structural diagram of the present invention; Figure 3 This is a schematic diagram showing the location of the internal structure of the present invention; Figure 4 This is a schematic diagram of the structure between the outer shell, counterweight, driver and connecting frame of the present invention; Figure 5 This is a schematic diagram showing the separation between the long balance bubble and the outer shell of the present invention; Figure 6 This is a schematic diagram showing the positions of the counterweight, base plate, and adjusting member 1 according to the present invention. Figure 7 This is a schematic diagram showing the positions of the counterweight, base plate, adjusting member one, and adjusting member two of the present invention. Figure 8 This is a schematic diagram showing the disassembled state of component two of the present invention.

[0026] Reference numerals: 1. Main body; 11. Eyepiece adjustment knob; 12. Objective lens adjustment knob; 13. Objective lens; 14. Laser module; 15. Rotary button; 2. Outer shell; 21. Handle; 23. Scale ring; 24. Long balance bubble; 241. Mounting slot; 242. Insertion hole; 243. Rubber post; 244. Spring holder; 245. Pressure plate; 246. Skirt; 3. Counterweight base; 31. Circular balance bubble; 32. Screw hole seat; 4. Adjustment component one; 41. Bolt; 42. Middle sleeve; 421. Upper threaded hole; 422. Lower threaded hole; 43. Ejector pin one; 4 4. Spinning ring; 45. Steel ball one; 5. Base plate; 51. Receiving groove; 6. Driver; 61. Motor; 62. Stabilizer; 63. Thick gear; 64. Internal gear ring; 7. Connecting frame; 71. Inner frame; 72. Threading; 73. Upper plane bearing; 74. Lower plane bearing; 8. Adjusting component two; 81. Screw; 82. Ball head; 83. External threaded ring; 831. Support lug; 832. Ring plate; 833. Protrusion; 84. Sleeve; 841. Inclined pressure surface; 85. Clip; 851. Notch; 86. Ejector pin two; 861. Arc groove; 87. Steel ball two. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] like Figure 1 - Figure 8 As shown, this embodiment provides a multi-directional laser plumb line instrument to solve the problem of poor line-drawing accuracy of existing multi-directional laser plumb line instruments in undulating ground and vibration environments. The specific structure includes: The main body 1 includes an eyepiece at the top, a horizontally arranged objective lens 13 below the main body 1, and a laser module 14 in the middle of the main body 1. The main body 1 is the core component of the multi-directional laser plumb line instrument. It is custom-made by the manufacturer and can observe the line-setting position and emit laser. The internal structure is existing technology and has not been improved, so it will not be described in detail here. Outer shell 2, which is fitted onto the outside of the main body 1, and a long balance bubble 24 is provided on the plane of the main body 1; The mounting base includes a counterweight base 3, which is rotatably connected to the outer shell 2 via a connecting frame 7. A driver 6 is provided between the counterweight base 3 and the outer shell 2, which can drive the outer shell 2 to rotate relative to the counterweight base 3. A circular balance bubble 31 is provided on the plane of the counterweight base 3. Three equally spaced screw hole seats 32 are provided on the edge of the counterweight base 3. An adjusting component 4 is provided at the screw hole seats 32. The length of the adjusting component 4 can be adjusted. A base plate 5 is provided at the bottom end of the adjusting component 4. The angle between the adjusting component 4 and the base plate 5 can be changed. The adjusting component 4 includes a bolt 41, which is threaded into the middle of the screw hole seat 32. A middle sleeve 42 is installed at the bottom of the bolt 41, and a pin 43 is installed at the bottom of the middle sleeve 42. A receiving groove 51 is provided on the top surface of the base plate 5 corresponding to the adjusting component 4. The receiving groove 51 contains steel balls 45 arranged in a ring array. A spinning ring 44 is provided above the steel balls 45. The outer circumference of the spinning ring 44 is threaded to the inner circumference of the receiving groove 51. The bottom end of the pin 43 is conical and is inserted from top to bottom into the center of the ring array of steel balls 45.

[0029] The working principle of this embodiment is as follows: In use, place the base plate 5 at the positioning base point. If the ground at the base point is uneven, the depth of the bolt 41 screwed into the screw hole seat 32 can be changed by rotating the bolt 41. This changes the length of the adjusting piece 4 between the counterweight base 3 and the base plate 5, adjusting the distance between the three screw hole seats 32 and the base plate 5. Combined with the indications of the circular balance bubble 31 and the long balance bubble 24, the top surface of the counterweight base 3 can be made parallel to the horizontal plane, adapting to ground base points with different flatness and tilt angles. Moreover, the adjusting piece 4 contacts the ring array of steel balls 45 through the ejector pin 43, ensuring stable contact even if the adjusting piece 4 is not vertical. Thus, when needed... To generate multi-directional laser alignment lines, the driver 6 can be used to rotate the outer shell 2 and the main body 1 at intervals of 90 degrees, generating mutually perpendicular laser lines on the ground and wall surfaces for easy positioning. At the same time, if there is other construction work on site, the vibration transmitted to the base plate 5 can be effectively suppressed because the contact area between the ejector pin 43 and the steel ball 45 is extremely small and they are independent of each other. The vibration of the base plate 5 can be transmitted to the position of the main body 1 through the adjusting component 4, ensuring the stability of the position of the main body 1 and preventing the emitted laser from shaking. Especially when drilling lines over long distances, the extension direction of the light is more accurate, effectively reducing the impact of on-site vibration on the accuracy of the drilling.

[0030] In a further embodiment, for fine adjustment of the length of the adjusting member 4, refer to Figure 6The middle sleeve 42 has an upper threaded hole 421 at the center of its top end and a lower threaded hole 422 at the center of its bottom end. The upper threaded hole 421 and the lower threaded hole 422 are coaxially connected. The pitch of the upper threaded hole 421 is smaller than the pitch of the lower threaded hole 422. The middle sleeve 42 also has an upper threaded hole 421 and a lower threaded hole 422 in its middle section. This allows for flexible assembly of the bolt 41 and the ejector pin 43. In case of damage, the bolt 41 and the ejector pin 43 can be replaced individually. Without rotating bolt 41, the distance between bolt 41 and ejector pin 43 can be adjusted by rotating the middle sleeve 42 alone, allowing for more precise adjustment of the level of the counterweight 3. Furthermore, since the pitch of the upper threaded hole 421 is smaller than that of the lower threaded hole 422, bolt 41 and ejector pin 43 can be installed simultaneously using a single opening. Moreover, with different pitches, by fixing bolt 41 and utilizing the differential screw transmission effect, rotating the middle sleeve 42 and ejector pin 43 separately can achieve millimeter-level fine adjustment, making it convenient to use.

[0031] In a further embodiment, a new mounting base structure is disclosed, referring to... Figure 7 Two of the three screw hole seats 32 are equipped with adjusting components 1 4, and the other screw hole seat 32 is equipped with adjusting component 2 8. The counterweight seat 3 is detachably connected to the base plate 5 through adjusting component 2 8. In the existing arrangement of the three adjusting components 1 4, the base plate 5 and the counterweight seat 3 are completely independent. This makes it easy to lose them when they need to be picked up separately during transportation. Therefore, by setting up an adjusting component 2 8, the adjusting component 2 8 can change the angle and length to realize the basic function of adjusting component 1 4. At the same time, the adjusting component 2 8 can also connect the counterweight seat 3 and the base plate 5 into a whole, which is convenient for transportation and carrying and prevents the base plate 5 from being lost. In addition, the adjusting component 2 8 is a detachable structure, which can be disassembled and replaced separately when the base plate 5 is damaged, without affecting the convenience of later maintenance.

[0032] In a further embodiment, a specific configuration of the adjusting member 2 8 is disclosed, referring to... Figure 7 and Figure 8Adjusting component 2 8 includes a screw 81, which is installed through the screw hole seat 32. A ball head 82 is installed at the bottom end of the screw 81. A sleeve 84 is sleeved in the middle section of the screw 81. An external threaded ring 83 is sleeved on the outside of the ball head 82. A ring plate 832 is fixedly installed at the bottom end of the external threaded ring 83. A pin 2 86 is installed through the ring plate 832. A receiving groove 51 is opened on the top surface of the base plate 5 corresponding to the adjusting component 2 8. The receiving groove 51 contains two steel balls arranged in a ring array. 87. Horizontally extending protrusions 833 are symmetrically installed on the edge of the ring plate 832. A bracket 85 is fixedly installed on the base plate 5 opposite to the protrusions 833. The bracket 85 has a notch 851 in the middle for the protrusions 833 to engage. The screw 81 is connected to the screw hole seat 32 by threads, and the positions of the screw 81 and the screw hole seat 32 can be rotated to change. At the same time, the ejector pin 86 adopts a stepped cylindrical structure with a thicker top and a thinner bottom, and is inserted into the ring plate 832 from top to bottom. When replacing, it can be directly... By flipping the ring plate 832 180 degrees, the ejector pin 2 86 can be removed for individual maintenance. When it is necessary to change the angle of the ejector pin 2 86, it can be directly swung to tighten the sleeve 84 onto the outside of the external threaded ring 83. This will press the bottom surface of the ball head 82 against the top surface of the ejector pin 2 86, thus fixing the screw 81 to the ejector pin 2 86. In this way, even after the counterweight 3 is leveled, the ejector pin 2 86 can still be perpendicular to the base plate 5, ensuring that it is centered and inserted into the steel ball 2. At the center of the ring array of 87, the contact stability is better. Furthermore, the protrusion 833 at the edge of the ring plate 832 is engaged in the notch 851, which can connect the adjustment component 8 to the base plate 5 as a whole. At the same time, the inner diameter of the notch 851 is larger than the size of the protrusion 833. After being placed on the ground, the protrusion 833 is suspended in the notch 851 and will not come into contact with the bracket 85, ensuring that the ejector pin 86 can still stably play the role of isolating vibration transmission.

[0033] In a further embodiment, to ensure a secure connection between the separate screw 81 and the ejector pin 86, refer to... Figure 8 The bottom of the ejector pin 86 is conical, and the top of the ejector pin 86 is provided with an arc groove 861 that mates with the ball head 82. The top of the external threaded ring 83 is equipped with a ring array of lugs 831. The upper half of the inner wall of the sleeve 84 is provided with a sloping pressure surface 841, and the lower half of the inner wall of the sleeve 84 is provided with a threaded groove. When the sleeve 84 rotates down along the outer wall of the external threaded ring 83, the lugs 831 can be pressed against the upper surface of the ball head 82 by the sloping pressure surface 841. When the sleeve 84 is tightened, the elastic lugs 831 will be squeezed and constricted by the sloping pressure surface 841, thereby increasing the contact stability between the sleeve 84, the lugs 831 and the ball head 82. When it is necessary to separate the external threaded ring 83 and the ball head 82, the sleeve 84 is removed first, and then the ball head 82 is pulled out from the external threaded ring 83. At this time, the lugs 831 will be squeezed away from each other by the ball head 82, without affecting the basic function of being detachable and replaceable.

[0034] In a further embodiment, a specific configuration of the driver 6 is disclosed, referring to... Figure 3 and Figure 4 The driver 6 includes a motor 61, which is fixedly connected to the inner wall of the housing 2. A thick gear 63 is installed at the bottom of the motor shaft of the motor 61, and a stabilizer 62 is installed in the middle section of the motor shaft. The stabilizer 62 is fixedly connected to the inner wall of the housing 2. An internal gear ring 64 is provided at the top of the counterweight 3 corresponding to the thick gear 63. The motor 61 is a servo motor, which can control the rotation angle. Through the meshing of the thick gear 63 and the internal gear ring 64, when the thick gear 63 rotates, it can drive the housing 2 to rotate relative to the counterweight 3. The center of the internal gear ring 64 coincides with the center line of the main body 1, realizing centered rotation. A laser-emitting objective lens 13 emits intersecting lines. Because the motor shaft is vertical and the thick gear 63 and the internal gear ring 64 are horizontal, a horizontal force will act on the position of the motor shaft during rotation. A separate stabilizer 62 is set up and connected to the motor shaft through a bearing, which can support the motor shaft radially and ensure that the motor 61 can work stably for a long time.

[0035] In a further embodiment, a specific configuration of the connecting frame 7 is disclosed, referring to... Figure 3 and Figure 4 The connecting frame 7 includes an inner frame 71, which is fixedly connected to the inner wall of the outer shell 2. A through hole is provided in the middle of the inner frame 71, through which a threaded wire 72 is installed. An upper flat bearing 73 is installed between the threaded wire 72 and the top surface of the inner frame 71. A central hole is provided in the middle of the counterweight seat 3, through which the threaded wire 72 extends to the bottom surface of the counterweight seat 3. A nut is installed at the lower part of the threaded wire 72, and a lower flat bearing 74 is installed between the nut and the bottom surface of the counterweight seat 3. An inner frame 71 resembling a three-pointed star is installed at the bottom of the outer shell 2, which will not affect the installation of the motor 61. At the same time, a threaded wire 72 is installed in the middle of the inner frame 71, passing through the counterweight seat 3 from top to bottom. During installation, the nut is tightened from the bottom to connect the outer shell 2 and the counterweight seat 3. Meanwhile, the upper flat bearing 73 and the lower flat bearing 74 allow the threaded wire 72 to slide in contact with the inner frame 71 and the counterweight seat 3, reducing the frictional resistance of the contact surfaces and ensuring the smooth rotation of the outer shell 2.

[0036] In a further embodiment, the mounting structure of the long balancing bubble 24 is disclosed, referring to... Figure 5A rubber post 243 is fixedly installed on the bottom surface of one end of the long balancing bubble 24. The outer shell 2 has a mounting groove 241 corresponding to the long balancing bubble 24, and an insertion hole 242 is opened in the outer shell 2 directly opposite the rubber post 243. A pressure plate 245 is fixedly installed on the other end of the long balancing bubble 24. A spring holder 244 is installed in the mounting groove 241 directly opposite the pressure plate 245. A screw is screwed into the middle of the pressure plate 245, and an internal threaded hole is opened in the pressure plate 245 corresponding to the screw. One end of the long balancing bubble 24 has a flexible rubber post 243, and the other end... The pressure plate 245 and screws connect to a spring holder 244. The lower two-thirds of the rubber column 243 can be inserted into the insertion hole 242. The spring holder 244 is fixed to the bottom surface of the mounting groove 241. Before use, the device can be placed on a flat surface, and the screws can be loosened or tightened to press down or lift up the long balance bubble 24. During the process, the spring holder 244 can deform synchronously to compensate for support, calibrate the long balance bubble 24, and replace the long balance bubble 24 individually to ensure the stability of the device in long-term use and improve maintainability.

[0037] In a further embodiment, due to the detachable structure of the long balancing bubble 24, the width of the mounting groove 241 is inevitably greater than the width of the long balancing bubble 24. If dust enters the gap between the mounting groove 241 and the long balancing bubble 24, the long balancing bubble 24 will become stuck. If water enters the gap, causing the rubber long balancing bubble 24 to be in a humid environment for a long time, it will accelerate the aging of the long balancing bubble 24 and affect its service life. Figure 5 The long balancing bubble 24 has a skirt 246 at its edge. The skirt 246 is made of elastic material and its width is greater than the opening width of the mounting groove 241. Therefore, the elastic material skirt 246 is installed around the long balancing bubble 24 and the gap between the long balancing bubble 24 and the mounting groove 241 is sealed by the skirt 246 to prevent dust and water from entering.

[0038] In a further embodiment, to accommodate wall markings at different distances, refer to Figure 1 and Figure 2The main body 1 has an eyepiece adjustment knob 11 in the middle section and an objective lens adjustment knob 12 at the objective lens 13. The lower part of the main body 1 has a rotary button 15, which is electrically connected to the driver 6. The outer shell 2 has through openings corresponding to the eyepiece adjustment knob 11, the objective lens adjustment knob 12, and the rotary button 15. The lower part of the outer shell 2 has a scale ring 23, and the upper part of the outer shell 2 has a handle 21. The focal length of the eyepiece can be changed by the eyepiece adjustment knob 11, which allows for adjustable focusing. The objective lens adjustment knob 12 can change the tilt angle of the objective lens 13, allowing for adaptive wire-laying operations on different tilt surfaces to ensure wire-laying accuracy. The adjustment method is implemented by a mature product and is existing technology, so it will not be described in detail here. There are two rotary buttons 15, one for powering on the driver 6 and the other for de-powering the driver 6. The control method and internal circuit are customized by the manufacturer and are mature existing technology, so they will not be described in detail here. The handle 21 is convenient for carrying.

[0039] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention.

Claims

1. A multi-directional laser plumb line, characterized in that, include: The main body (1) includes an eyepiece located at the top, a horizontally arranged objective lens (13) below the main body (1), and a laser module (14) in the middle section of the main body (1). The outer shell (2) is fitted on the outside of the main body (1), and the main body (1) has a long balance bubble (24) on its plane. Mounting base, the mounting base includes a counterweight base (3), the counterweight base (3) and the outer shell (2) are rotatably assembled and connected by a connecting frame (7), a driver (6) is provided between the counterweight base (3) and the outer shell (2), the driver (6) can drive the outer shell (2) to rotate relative to the counterweight base (3), a circular balance bubble (31) is provided on the plane of the counterweight base (3), three equally spaced screw hole seats (32) are provided on the edge of the counterweight base (3), an adjustment component (4) is provided at the screw hole seat (32), and a base plate (5) is provided at the bottom end of the adjustment component (4); The adjusting component (4) includes a bolt (41), which is threaded into the middle of the screw hole seat (32). A middle sleeve (42) is installed at the bottom of the bolt (41), and a pin (43) is installed at the bottom of the middle sleeve (42). A receiving groove (51) is provided on the top surface of the base plate (5) corresponding to the adjusting component (4). The receiving groove (51) contains a ring array of steel balls (45). A spinning ring (44) is provided above the steel balls (45). The outer circumference of the spinning ring (44) is threaded to the inner circumference of the receiving groove (51). The bottom of the pin (43) is conical and is inserted from top to bottom into the center of the ring array of steel balls (45).

2. The multi-directional laser plumb line according to claim 1, characterized in that, The upper threaded hole (421) is provided at the middle of the top end of the middle sleeve (42), and the lower threaded hole (422) is provided at the middle of the bottom end of the middle sleeve (42). The upper threaded hole (421) and the lower threaded hole (422) are coaxially connected. The pitch of the upper threaded hole (421) is smaller than the pitch of the lower threaded hole (422).

3. The multi-directional laser plumb line according to claim 1, characterized in that, Two of the three screw hole seats (32) are equipped with an adjusting element one (4), and the other screw hole seat (32) is equipped with an adjusting element two (8). The counterweight seat (3) is detachably connected to the base plate (5) through the adjusting element two (8).

4. The multi-directional laser plumb line according to claim 3, characterized in that, The adjusting component two (8) includes a screw (81), which is installed through the screw hole seat (32). A ball head (82) is installed at the bottom end of the screw (81). A sleeve (84) is sleeved on the middle section of the screw (81). An external threaded ring (83) is sleeved on the outside of the ball head (82). A ring plate (832) is fixedly installed at the bottom end of the external threaded ring (83). A pin two (86) is installed through the ring plate (832). The bottom plate (5) has a receiving groove (51) on the top surface corresponding to the second adjusting member (8). The receiving groove (51) contains two steel balls (87) arranged in a ring array. The ring plate (832) has horizontally extending protrusions (833) symmetrically installed at its edge. The bottom plate (5) has a card holder (85) fixedly installed in front of the protrusion (833). The card holder (85) has a notch (851) in the middle for the protrusion (833) to be engaged.

5. The multi-directional laser plumb line according to claim 4, characterized in that, The bottom end of the second ejector pin (86) is conical, and the top end of the second ejector pin (86) is provided with an arc groove (861) that mates with the ball head (82). The top end of the external threaded ring (83) is equipped with a ring array of lugs (831). The upper half of the inner wall of the sleeve (84) is provided with a sloping pressure surface (841), and the lower half of the inner wall of the sleeve (84) is provided with a threaded groove. When the sleeve (84) rotates down along the outer wall of the external threaded ring (83), it can press the lugs (831) against the upper surface of the ball head (82) through the sloping pressure surface (841).

6. The multi-directional laser plumb line according to claim 1, characterized in that, The driver (6) includes a motor (61), which is fixedly connected to the inner wall of the outer shell (2). A thick gear (63) is installed at the bottom of the motor shaft of the motor (61), and a stabilizer (62) is installed in the middle section of the motor shaft. The stabilizer (62) is fixedly connected to the inner wall of the outer shell (2). An internal gear ring (64) is provided at the top of the counterweight (3) corresponding to the thick gear (63).

7. The multi-directional laser plumb line according to claim 1, characterized in that, The connecting frame (7) includes an inner frame (71), which is fixedly connected to the inner wall of the outer shell (2). The inner frame (71) has a through hole in the middle, through which a threaded wire (72) is installed. An upper plane bearing (73) is installed between the threaded wire (72) and the top surface of the inner frame (71). The counterweight (3) has a central hole in the middle, through which the threaded wire (72) extends to the bottom surface of the counterweight (3). A nut is installed at the lower part of the threaded wire (72), and a lower plane bearing (74) is installed between the nut and the bottom surface of the counterweight (3).

8. The multi-directional laser plumb line according to claim 1, characterized in that, A rubber column (243) is fixedly installed on the bottom surface of one end of the long balance bubble (24). The outer shell (2) is provided with an installation groove (241) corresponding to the long balance bubble (24). An insertion hole (242) is opened on the outer shell (2) facing the rubber column (243). A pressure plate (245) is fixedly installed on the other end of the long balance bubble (24). A spring frame (244) is installed on the installation groove (241) facing the pressure plate (245). A screw is screwed into the middle of the pressure plate (245). An internal thread hole is opened on the pressure plate (245) corresponding to the screw.

9. The multi-directional laser plumb line according to claim 8, characterized in that, The long balance bubble (24) has a skirt (246) at its edge. The skirt (246) is made of elastic material and the width of the skirt (246) is greater than the opening width of the mounting groove (241).

10. The multi-directional laser plumb line according to claim 1, characterized in that, The main body (1) is provided with an eyepiece adjustment knob (11) in the middle section, and an objective lens adjustment knob (12) is provided at the objective lens (13). The main body (1) is provided with a rotary button (15) at the bottom. The rotary button (15) is electrically connected to the driver (6). The outer shell (2) is provided with through openings corresponding to the eyepiece adjustment knob (11), the objective lens adjustment knob (12) and the rotary button (15). The lower part of the outer shell (2) is provided with a scale ring (23), and the upper part of the outer shell (2) is provided with a handle (21).

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