Calibration method and device for high-precision leveling instrument

Abstract

The invention discloses a calibration method and device for a high-precision leveling instrument, and aims to solve the problem that deviation is easy to occur when the leveling instrument is directly operated manually for scribing. According to the technical scheme, the leveling device is characterized by comprising a base, two sets of liftable moving blocks are arranged on the upper end face of the base, a lifting mechanism used for driving the moving blocks to ascend and descend is arranged on the base, clamping grooves are formed in the ends, away from the base, of the moving blocks on the two sides, and fixing mechanisms used for fixing a leveling instrument are arranged in the clamping grooves. According to the leveling instrument, the two ends of the leveling instrument are fixed through the fixing mechanism, the height of the leveling instrument is adjusted through the lifting mechanism, the leveling instrument does not need to be held manually, the leveling instrument is more stable during scribing, and the horizontal scribing effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of level rulers, and more particularly to a calibration method and device for a high-precision level ruler. Background Art

[0002] A spirit level is a measuring instrument that uses the principle of liquid level to directly display angular displacement to measure the deviation of the relative horizontal position, vertical position, and tilt position of the measured surface. In 2002, the state promulgated the "JJF1085-2002 Level Calibration Specification", which made calibration regulations for the flatness of the working surface of the spirit level, the indication error of the line scale, the zero error and the graduation value error, etc., to ensure the quality of the spirit level during manufacturing and use.

[0003] A level ruler is needed to assist in drawing lines. However, when drawing lines with existing level rulers, one hand is often used to hold down the level ruler and the other hand is used to draw lines according to the level ruler. This prevents the level ruler from being easily offset due to the pressure of the brush during the drawing process, resulting in horizontal drawing failure, which is inconvenient to operate.

[0004] Therefore, a solution needs to be proposed to solve this problem. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a calibration method and device for a high-precision level ruler, by setting a fixing mechanism to fix the two ends of the level ruler, and adjusting the height of the level ruler by a lifting mechanism, without the need for manual hand-holding of the level ruler, so that the level ruler is more stable when marking and the horizontal marking effect is better.

[0006] The above technical purpose of the present invention is achieved through the following technical scheme: a calibration device for a high-precision spirit level, comprising a base, the upper end surface of the base is provided with two groups of liftable moving blocks, the base is provided with a lifting mechanism for driving the moving blocks to lift and lower, and the ends of the moving blocks on both sides away from the base are provided with slots, and the slots are provided with a fixing mechanism for fixing the spirit level.

[0007] The present invention is further configured as follows: the lifting mechanism includes a receiving groove arranged on the lower end surface of the moving block, screw rods are arranged in the receiving grooves on both sides, and a driving device for driving the screw rods on both sides to rotate synchronously is arranged in the base, a nut seat is sleeved on the screw rod, the nut seat is fixedly connected to the inner wall of the receiving groove, and the side wall of the nut seat is in contact with the inner wall of the receiving groove.

[0008] The present invention is further configured as follows: the driving device includes a cavity arranged inside the base and a rotating rod rotatably connected to the inner wall of the cavity, a motor is installed on the side wall of the base, the output shaft of the motor is transmission-connected to one end of the rotating rod, two through holes corresponding to the positions of the screw rods on both sides are arranged on the inner wall of the cavity, the through holes are connected to the accommodating grooves, a driving rod is rotatably connected to the inner wall of the through hole, a crown gear 1 is fixedly connected to one end of the driving rod close to the rotating rod, a crown gear 2 meshing with the crown gear 1 is fixedly connected to the rotating rod, and the other end of the driving rod is fixedly connected to the screw rod.

[0009] The present invention is further configured as follows: the fixing mechanism includes a clamping plate slidably connected to the inner wall of the slot, the upper end surface of the clamping plate is rotatably connected to a threaded rod, the inner wall of the slot is provided with a threaded groove that is connected to the outside world, the threaded groove is threadedly connected to the threaded rod, and the end of the threaded rod away from the clamping plate is fixedly connected to a knob.

[0010] The present invention is further configured as follows: a limiting sleeve is sleeved on the outer wall of the moving block, the limiting sleeve is fixedly connected to the upper end surface of the base, and the moving block is fitted with the inner wall of the limiting sleeve.

[0011] The present invention is further configured as follows: a limiting block is fixedly connected to the outer wall of the moving block, and a limiting groove for the limiting block to be inserted and moved is arranged on the inner wall of the limiting sleeve.

[0012] The above technical purpose of the present invention is also achieved through the following technical solutions: a method for calibrating a high-precision level ruler, step a: fixing the level ruler: inserting the two ends of the level ruler into the slots respectively, holding the knob and rotating the threaded rod, driving the threaded rod to move along the threaded groove, so that the clamping plate is driven by the threaded rod to approach the level ruler until it is clamped in the slot; step b: height adjustment: the motor drives the rotating rod to rotate, and the crown gear 2 on the rotating rod drives the crown gear 1 meshing with it to rotate, and the crown gear 1 on both sides drives the screw rods on both sides to rotate through the driving rod, and the screw rod drives the moving block to rise and fall through the nut seat to achieve the adjustment of the height of the level ruler; step c: marking: after adjusting to the appropriate height, horizontal marking can be performed according to the level ruler.

[0013] In summary, the present invention has the following beneficial effects:

[0014] The present invention provides a fixing mechanism to fix the two ends of the level ruler, and adjusts the height of the level ruler through a lifting mechanism, so that the level ruler does not need to be manually held, so that the level ruler is more stable when marking lines, and the horizontal marking effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0016] Figure 2 The structure of the present invention is schematically shown Figure 2 .

[0017] In the figure: 1. base; 2. moving block; 3. slot; 4. receiving slot; 5. screw rod; 6. nut seat; 7. cavity; 8. rotating rod; 9. driving rod; 10. crown gear 1; 11. crown gear 2; 12. splint; 13. threaded rod; 14. knob; 15. threaded groove; 16. limit sleeve; 17. limit block; 18. limit groove. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The present invention is described in detail below in conjunction with the accompanying drawings.

[0022] A calibration device for a high-precision level ruler, such as Figure 1-Figure 2 As shown, it includes a base 1, and the upper end surface of the base 1 is provided with two sets of fixing devices for fixing and connecting the two ends of the level ruler, and the fixing devices on both sides include a liftable moving block 2, and the base 1 is provided with a lifting mechanism for driving the moving block 2 to lift and lower, and the ends of the moving blocks 2 on both sides away from the base 1 are provided with a slot 3, and the slot 3 is provided with a fixing mechanism for fixing the level ruler.

[0023] The lifting mechanism includes a receiving groove 4 arranged on the lower end surface of the moving block 2, and screw rods 5 are arranged in the receiving grooves 4 on both sides. A driving device for driving the screw rods 5 on both sides to rotate synchronously is arranged in the base 1. A nut seat 6 is sleeved on the screw rod 5, and the nut seat 6 is fixedly connected to the inner wall of the receiving groove 4, and the side wall of the nut seat 6 is in contact with the inner wall of the receiving groove 4.

[0024] The driving device includes a cavity 7 arranged inside the base 1 and a rotating rod 8 rotatably connected to the inner wall of the cavity 7. A motor is installed on the side wall of the base 1, and the output shaft of the motor is transmission-connected to one end of the rotating rod 8. Two through holes corresponding to the positions of the screw rods 5 on both sides are arranged on the inner wall of the cavity 7. The through holes are connected to the accommodating groove 4. A driving rod 9 is rotatably connected to the inner wall of the through hole. A crown gear 10 is fixedly connected to one end of the driving rod 9 close to the rotating rod 8. A crown gear 2 11 meshing with the crown gear 10 is fixedly connected to the rotating rod 8, and the other end of the driving rod 9 is fixedly connected to the screw rod 5.

[0025] The fixing mechanism includes a clamping plate 12 which is slidably connected to the inner wall of the card slot 3, and a threaded rod 13 is rotatably connected to the upper end surface of the clamping plate 12. A threaded groove 15 which is connected to the outside is opened on the inner wall of the card slot 3. The threaded groove 15 is threadedly connected to the threaded rod 13, and a knob 14 is fixedly connected to the end of the threaded rod 13 away from the clamping plate 12.

[0026] A limit sleeve 16 is sleeved on the outer wall of the moving block 2, and the limit sleeve 16 is fixedly connected to the upper end surface of the base 1. The moving block 2 fits the inner wall of the limit sleeve 16. A limit block 17 is fixedly connected to the outer wall of the moving block 2. A limit groove 18 is provided on the inner wall of the limit sleeve 16 for the limit block 17 to be inserted and moved. When the moving block 2 is lifted and lowered with the rotation of the screw rod 5, the moving block 2 will move along the inner wall of the limit sleeve 16, and the limit block 17 will always be inserted in the limit groove 18, so that the moving block 2 is more stable during the lifting process.

[0027] A method for calibrating a high-precision level ruler, step a: fixing the level ruler: inserting the two ends of the level ruler into the slot 3 respectively, holding the knob 14 and rotating the threaded rod 13, since the threaded rod 13 and the threaded groove 15 are threadedly connected, the rotation of the threaded rod 13 drives the threaded rod 13 to move along the threaded groove 15, so that the clamping plate 12 is driven by the threaded rod 13 to approach the level ruler until it is clamped in the slot 3, and when the level ruler needs to be removed, the knob 14 is also held to drive the threaded rod 13 to rotate in the opposite direction;

[0028] Step b: Height adjustment: The motor drives the rotating rod 8 to rotate forward and reverse, and the crown gear 2 11 on the rotating rod 8 drives the crown gear 10 meshing with it to rotate, and the crown gear 10 on both sides drives the screw rods 5 on both sides to rotate through the driving rod 9, and the screw rod 5 drives the moving block 2 to rise and fall through the nut seat 6 to adjust the height of the level ruler. After adjusting to the appropriate height, turn off the motor, which is a servo motor, so that the moving block 2 and the level ruler stay at the current height, so that the moving blocks 2 on both sides can be raised and lowered synchronously, so that the level gauge remains in a horizontal state, and the operation is more convenient;

[0029] Step c: Marking: After adjusting to the appropriate height, draw horizontal lines using a spirit level.

[0030] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A high-precision level calibration device, characterized in that: The utility model comprises a base (1), wherein the upper end surface of the base (1) is provided with two groups of movable blocks (2) that can be raised and lowered, and the base (1) is provided with a lifting mechanism for driving the movable blocks (2) to be raised and lowered, and the ends of the movable blocks (2) on both sides away from the base (1) are provided with a clamping groove (3), and the clamping groove (3) is provided with a fixing mechanism for fixing a level ruler.

2. A high-precision level calibration device according to claim 1, characterized in that: The lifting mechanism comprises a receiving groove (4) arranged on the lower end surface of the moving block (2), screw rods (5) are arranged in the receiving grooves (4) on both sides, and a driving device for driving the screw rods (5) on both sides to rotate synchronously is arranged in the base (1), a nut seat (6) is sleeved on the screw rod (5), the nut seat (6) is fixedly connected to the inner wall of the receiving groove (4), and the side wall of the nut seat (6) is in contact with the inner wall of the receiving groove (4).

3. A high-precision level ruler calibration device according to claim 2, characterized in that: The driving device comprises a cavity (7) arranged inside the base (1) and a rotating rod (8) rotatably connected to the inner wall of the cavity (7); a motor is mounted on the side wall of the base (1); the output shaft of the motor is transmission-connected to one end of the rotating rod (8); two through holes corresponding to the positions of the screw rods (5) on both sides are arranged on the inner wall of the cavity (7); the through holes are connected to the accommodating groove (4); a driving rod (9) is rotatably connected to the inner wall of the through hole; a crown gear 1 (10) is fixedly connected to one end of the driving rod (9) close to the rotating rod (8); a crown gear 2 (11) meshing with the crown gear 1 (10) is fixedly connected to the rotating rod (8); and the other end of the driving rod (9) is fixedly connected to the screw rod (5).

4. The high-precision level calibration device according to claim 1, characterized in that: The fixing mechanism comprises a clamping plate (12) slidably connected to the inner wall of the clamping slot (3); the upper end surface of the clamping plate (12) is rotatably connected to a threaded rod (13); the inner wall of the clamping slot (3) is provided with a threaded groove (15) which is in communication with the outside; the threaded groove (15) is threadedly connected to the threaded rod (13); and the end of the threaded rod (13) away from the clamping plate (12) is fixedly connected to a knob (14).

5. The high-precision level ruler calibration device according to claim 1, characterized in that: A limiting sleeve (16) is sleeved on the outer wall of the moving block (2); the limiting sleeve (16) is fixedly connected to the upper end surface of the base (1); and the moving block (2) is in close contact with the inner wall of the limiting sleeve (16).

6. A high-precision level calibration device according to claim 5, characterized in that: A limiting block (17) is fixedly connected to the outer wall of the moving block (2), and a limiting groove (18) for the limiting block (17) to be inserted and moved is provided on the inner wall of the limiting sleeve (16).

7. A method for calibrating a high-precision level ruler according to any one of claims 1 to 6, characterized in that: Step a: Fixing the level ruler: insert the two ends of the level ruler into the slot (3) respectively, hold the knob (14) and rotate the threaded rod (13), drive the threaded rod (13) to move along the threaded groove (15), and make the clamping plate (12) approach the level ruler under the drive of the threaded rod (13) until it is clamped in the slot (3); Step b: Height adjustment: the motor drives the rotating rod (8) to rotate, the crown gear 2 (11) on the rotating rod (8) drives the crown gear 1 (10) meshed with it to rotate, and the crown gear 1 (10) on both sides drives the screw rod (5) on both sides to rotate through the driving rod (9), and the screw rod (5) drives the moving block (2) to rise and fall through the nut seat (6), so as to adjust the height of the level ruler; Step c: Marking: after adjusting to a suitable height, mark horizontally according to the level ruler.

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