A measuring rack and its installation method

Abstract

A measuring stand and its installation method provided by an embodiment of the present invention include a leveling plate, a frame, a centering member, and a prism fixing member. The leveling plate and the frame are adjusted through a first adjusting member and a second adjusting member to achieve leveling of the leveling plate. A center marking member is connected to the leveling plate. The centering rod is adjusted to extend along a second direction, so that the center of the prism is centered with the center marking member on the leveling plate, thereby completing the leveling and centering of the entire measuring stand. In the embodiment of the present invention, the centering member is detachably connected to the frame, the centering rod in the centering member is connected to the midpoint of the fixed rod, and the center marking member is adjusted to move on the leveling plate to drive the centering rod to swing. When the extending direction of the centering rod is in the plumb position, the prism center is aligned with the center marking member in the second direction, and thus the prism center coordinates can be directly obtained during measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering surveying, and particularly relates to a measuring frame and an installation method thereof. Background Art

[0002] CPIII is an orbit control network, which is a three-dimensional control network laid along the line and can meet the requirements of the stability and smoothness of the railway track. In order to ensure high precision during railway construction, a complete set of precise measurement systems has been established accordingly. Among them, CPIII measuring devices are used in the engineering control network of railways and rail transit. The CPIII measuring devices are inserted into designated measuring points for measurement. The relevant measuring devices mainly measure the plane and elevation of the center of the CPIII control points. Among them, the plane measurement is completed by using a plane rod and a prism, and the center of the prism is the center of the CPIII control point, which is not visible and the coordinates of the prism center cannot be directly measured and obtained. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a measuring frame and an installation method thereof to solve the technical problem that the coordinates of the prism center cannot be directly obtained.

[0004] A measuring frame provided by the present invention includes:

[0005] A leveling plate connected with a center identification member, and the center identification member can move along the leveling plate;

[0006] A frame having a hollow accommodation cavity. The frame has opposite first and second ends, and the first end is connected to the leveling plate through a first adjusting member; the first adjusting member adjusts the position of the leveling plate in the second direction;

[0007] A centering member having a fixed rod and a centering rod. The fixed rod extends in the first direction, and both ends of the fixed rod in the first direction are detachably connected to the frame; the midpoint of the fixed rod in the first direction is connected with the centering rod, and the centering rod can rotate along the midpoint, and the centering rod points from the midpoint to the center identification member;

[0008] A prism fixing member fixing a prism. The prism fixing member is connected to the second end through a second adjusting member, and the prism is located in the accommodation cavity;

[0009] Wherein, the frame can rotate around the second adjusting member, and the direction of the line connecting the center of the prism and the midpoint is perpendicular to both the first direction and the second direction.

[0010] Further, the center identification member has a third adjusting member for fixing the center identification member on the leveling plate.

[0011] Further, a first groove is provided on the side surface of the central identification member, and the centering rod extends into the first groove.

[0012] Further, a first tube level is provided on the screed board, and the first tube level extends along the length direction of the screed board; and / or,

[0013] a second tube level is provided on the screed board, and the second tube level extends along a direction perpendicular to the length direction of the screed board; and / or,

[0014] a third circular level is provided on the centering rod.

[0015] Further, the prism fixing member includes:

[0016] a support member for fixing the prism;

[0017] a fastener for fixing the frame on the support member; and

[0018] a planar rod, one end of which is connected to the end of the support member away from the prism.

[0019] Further, the support member is connected with a fastener, and the second end is connected to the support member through the fastener.

[0020] Further, the measuring frame further includes a receiver, and the receiver is threadedly connected to the end of the central identification member away from the screed board.

[0021] The present invention also provides an installation method for a measuring frame, including:

[0022] Connect the support member and the planar rod, and insert the planar rod into the measuring point;

[0023] Connect the frame and the prism fixing member through a fastener, adjust the rotation angle between the frame and the second adjusting member through the second adjusting member, connect the screed board and the frame through the first adjusting member, and adjust the position of the screed board in the second direction;

[0024] Connect the central identification member and the screed board, and the central identification member moves along the screed board;

[0025] Connect the centering member and the frame through a fixing rod, and the centering rod of the centering member points to the central identification member.

[0026] The steps of connecting the frame and the prism fixing member through a fastener, adjusting the rotation angle between the frame and the second adjusting member through the second adjusting member, connecting the screed board and the frame through the first adjusting member, and adjusting the position of the screed board in the second direction specifically include:

[0027] Connect the frame and the prism fixture through a fastener, rotate the frame to center the bubble of the second tubular level, and tighten the second adjusting member to fix the frame and the prism fixture;

[0028] Connect the screed board and the frame through the first adjusting member, and adjust the first adjusting member to level the screed board and center the first tubular level on the screed board.

[0029] Furthermore, the installation method further includes:

[0030] Thread-connect the receiver to the center identification member.

[0031] A measuring stand and a measuring stand installation method provided by an embodiment of the present invention include a screed board, a frame, a centering member, and a prism fixture. The screed board and the frame are adjusted through the first adjusting member and the second adjusting member to level the screed board. A center identification member is connected to the screed board. By adjusting the center identification member, the centering rod is driven to swing, so that the center of the prism is centered with the center identification member on the screed board, thereby completing the leveling and centering of the entire measuring stand. In the embodiment of the present invention, the centering member is detachably connected to the frame, the centering rod of the centering member is connected to the midpoint of the fixed rod, and when the center identification member is adjusted to move on the screed board, the centering rod is driven to rotate. When the third circular level on the centering rod is centered, the prism center and the center identification member center are on the same vertical line, and thus the prism center coordinates can be directly obtained during measurement. Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of a measuring stand provided by an embodiment of the present invention;

[0033] Figure 2 is a partial schematic diagram of a measuring stand provided by an embodiment of the present invention;

[0034] Figure 3 is Figure 2 a partial left view of a measuring stand in

[0035] Figure 4 is a schematic structural diagram of a prism fixture provided by an embodiment of the present invention;

[0036] Figure 5 is a top view of a screed board provided by an embodiment of the present invention;

[0037] Figure 6 is a schematic structural diagram of another measuring stand provided by an embodiment of the present invention;

[0038] Figure 7 is a schematic structural diagram of a fastener provided by an embodiment of the present invention;

[0039] Figure 8 A flowchart showing a method for installing a measuring stand provided by an embodiment of the present invention; and

[0040] Figure 9 A flowchart showing another method for installing a measuring stand provided by an embodiment of the present invention.

[0041] Explanation of reference numerals:

[0042] 10, screed board; 11, center identification member; 11A, threaded hole; 111, third adjusting member; 112, first groove; 113, first tubular level; 114, second tubular level; 115, connecting member; 12, first adjusting member; 20, frame; 21, receiving cavity; 22, first end; 23, second end; 24, second adjusting member; 30, centering member; 31, fixing rod; 311, midpoint; 312, third circular level; 32, centering rod; 40, prism fixing member; 41, prism; 42, support member; 421, fastener; 4211, fixing groove; 43, flat bar; O, central axis; O’, central axis. Detailed implementation manners

[0043] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present 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 only used to explain the present invention and are not used to limit the present invention.

[0044] For each specific technical feature in each of the embodiments described in the detailed implementation manners, various combinations can be made without conflict. For example, different embodiments can be formed by combining different specific technical features. To avoid unnecessary repetition, various possible combination manners of each specific technical feature in the present invention will not be described separately.

[0045] In the following description, the terms "first / second / ..." involved are only used to distinguish different objects and do not indicate that there are any same or related relationships between the objects. It should be understood that the orientation descriptions "above", "below", "upper", "lower", "left", "right" involved are all orientations in the normal use state.

[0046] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising that element. The term "connected" includes both direct connection and indirect connection unless otherwise specified.

[0047] A measuring stand provided by an embodiment of the present invention can be used in the field of railway engineering survey and is mainly a device for plane survey of the track control network (CPⅢ), providing a control reference for track laying and operation and maintenance. When conducting a survey, the measuring stand is placed on the measuring point, and generally, one measuring point is arranged every 60 m along both sides of the track.

[0048] The measuring stand provided by the embodiment of the present invention, as Figure 1 shown, includes a leveling plate 10, a frame 20, a centering member 30, and a prism fixing member 40. Among them, the leveling plate 10 is connected with a center marking member 11, and the center marking member 11 can move along the leveling plate 10. Specifically, the leveling plate 10 can be in the shape of a long plate and is located in the upper half of the measuring stand (such as Figure 1 shown above), having a certain length, height, and thickness. For example, the leveling plate 10 can be a rectangular plate with a length (such as Figure 1 shown in the left-right direction) of 120 mm, a height (such as Figure 1 shown in the up-down direction) of 10 mm, and a thickness (such as Figure 1 shown in the direction perpendicular to the paper plane) of 35 mm. The leveling plate 10 can be made of aviation aluminum alloy material to reduce the weight of the leveling plate and thus reduce the load of the measuring stand. The leveling plate 10 can move up and down to adjust the flatness of the leveling plate 10. For example, when the leveling plate 10 is in a state where the left side is higher than the right side, the left end of the leveling plate 10 can be moved downward, or the right end of the leveling plate 10 can be moved upward to level the leveling plate 10. The center marking member 11 can slide on the leveling plate 10 to adjust the position of the center marking member 11 on the leveling plate 10. A center marking can be set on the center marking member 11 to show the center position of the center marking member 11.

[0049] As Figure 2As shown, the frame 20 of the measuring stand has a hollow accommodation cavity 21. The frame 20 has opposite first end 22 and second end 23. The first end 22 is connected to the leveling plate 10 through a first adjusting member 12. Specifically, the frame 20 can be a U-shaped structure. This U-shaped structure surrounds to form a hollow accommodation cavity 21. One end of the U-shaped structure has an opening, and the opening communicates with the accommodation cavity 21. This opening faces downward in the measuring stand (such as Figure 1 shown in the up-and-down direction). Among them, the first end 22 is located above the frame 20 (such as Figure 1 shown in the up-and-down direction). The end where this opening is located is the second end 23. A first adjusting member 12 is provided between the leveling plate 10 and the frame 20. One end of the first adjusting member 12 is connected to the leveling plate 10, and the other end of the first adjusting member 12 is connected to the first end 22. The first adjusting member 12 adjusts the position of the leveling plate 10 in the second direction; the first direction and the second direction are substantially perpendicular. Specifically, the first adjusting member 12 can adjust the position in the up-and-down direction (such as Figure 2 shown in the up-and-down direction). There can be 2 first adjusting members 12. The 2 first adjusting members 12 are symmetrically arranged on both sides of the leveling plate 10 to adjust the positions of each part of the leveling plate 10 in the second direction (such as Figure 2 shown in the up-and-down direction). For example, the first adjusting member 12 can be an adjusting screw. There can be 2 adjusting screws, which are symmetrically arranged on both sides of the leveling plate 10. By adjusting and rotating the adjusting screws, the position of the leveling plate 10 in the second direction (such as Figure 1 shown in the up-and-down direction) can be adjusted to level the leveling plate 10. When the positions of the leveling plate 10 in the second direction (such as Figure 1 shown in the up-and-down direction) are all adjusted to be the same, that is, the first direction (such as Figure 1 shown in the left-and-right direction) and the second direction (such as Figure 1 shown in the up-and-down direction) are substantially perpendicular. The so-called substantially perpendicular means that considering assembly and design errors, absolute perpendicularity is not required.

[0050] Such as Figure 2 and Figure 3 shown, the centering member 30 has a fixed rod 31 and a centering rod 32. The fixed rod 31 extends along the first direction (such as Figure 2 shown in the left-and-right direction). The two ends of the fixed rod 31 in the first direction (such as Figure 2 shown in the left-and-right direction) are respectively detachably connected to the frame 20, and the axis of the fixed rod 31 is parallel to the rotation axis O' of the prism 41. Specifically, the length direction of the fixed rod 31 extends along the first direction (such as Figure 2 shown in the left-and-right direction). The fixed rod 31 is connected to the second end 23 close to the frame 20. Among them, the fixed rod 31 in the first direction (such as Figure 2It has opposite ends in the left - right direction (as shown), and the two ends are respectively connected to the frame 20. Optionally, there is a groove on the second end 23 close to the frame 20. The fixing rod 31 has protrusions at both ends in the first direction (such as the left - right direction as shown). The fixing rod 31 and the frame 20 are fixed by inserting the protrusions into the groove. The fixing rod 31 and the frame 20 can also be connected by other detachable means. For example, the fixing rod 31 and the frame 20 can also be connected by means such as bolt connection. The mid - point 311 of the fixing rod 31 in the first direction (such as the left - right direction as shown) is connected to an alignment rod 32. The alignment rod 32 can rotate around the mid - point 311, and the alignment rod 32 points from the mid - point 311 to the center identification member 11. Specifically, the so - called mid - point 311 means that the distance from the mid - point 311 to both ends of the fixing rod 31 in the first direction (such as the left - right direction as shown) is the same. The alignment rod 32 is in the shape of a long rod and extends from the mid - point 311 to the center identification member 11. One end of the alignment rod 32 close to the center identification member 11 can be set as a fine pointed head to facilitate the alignment rod 32 to accurately point to the middle of the center identification member 11. The alignment rod 32 can rotate around the mid - point 311 to adjust the direction pointed by the center identification member 11 driving the alignment rod 32. When the circular spirit level on the alignment rod 32 is centered, the center of the threaded hole 11A of the center identification member 11 and the center of the prism 41 are on the same vertical line, that is, the center of the receiver and the center of the prism 41 are on the same vertical line. Figure 2 It has opposite ends in the left - right direction (as shown). The two ends of the fixing rod 31 are provided with protrusions. The fixing rod 31 and the frame 20 are fixed by inserting the protrusions into the groove. The fixing rod 31 and the frame 20 can also be connected by other detachable means. For example, the fixing rod 31 and the frame 20 can also be connected by means such as bolt connection. The mid - point 311 of the fixing rod 31 in the first direction (such as the left - right direction as shown) is connected to an alignment rod 32. The alignment rod 32 can rotate around the mid - point 311, and the alignment rod 32 points from the mid - point 311 to the center identification member 11. Specifically, the so - called mid - point 311 means that the distance from the mid - point 311 to both ends of the fixing rod 31 in the first direction (such as the left - right direction as shown) is the same. Figure 2 The mid - point 311 of the fixing rod 31 in the first direction (such as the left - right direction as shown) is connected to an alignment rod 32. The alignment rod 32 can rotate around the mid - point 311, and the alignment rod 32 points from the mid - point 311 to the center identification member 11. Specifically, the so - called mid - point 311 means that the distance from the mid - point 311 to both ends of the fixing rod 31 in the first direction (such as the left - right direction as shown) is the same. The alignment rod 32 is in the shape of a long rod and extends from the mid - point 311 to the center identification member 11. One end of the alignment rod 32 close to the center identification member 11 can be set as a fine pointed head to facilitate the alignment rod 32 to accurately point to the middle of the center identification member 11. The alignment rod 32 can rotate around the mid - point 311 to adjust the direction pointed by the center identification member 11 driving the alignment rod 32. When the circular spirit level on the alignment rod 32 is centered, the center of the threaded hole 11A of the center identification member 11 and the center of the prism 41 are on the same vertical line, that is, the center of the receiver and the center of the prism 41 are on the same vertical line. Figure 2 The mid - point 311 of the fixing rod 31 in the first direction (such as the left - right direction as shown) is connected to an alignment rod 32. The alignment rod 32 can rotate around the mid - point 311, and the alignment rod 32 points from the mid - point 311 to the center identification member 11. Specifically, the so - called mid - point 311 means that the distance from the mid - point 311 to both ends of the fixing rod 31 in the first direction (such as the left - right direction as shown) is the same. The alignment rod 32 is in the shape of a long rod and extends from the mid - point 311 to the center identification member 11. One end of the alignment rod 32 close to the center identification member 11 can be set as a fine pointed head to facilitate the alignment rod 32 to accurately point to the middle of the center identification member 11. The alignment rod 32 can rotate around the mid - point 311 to adjust the direction pointed by the center identification member 11 driving the alignment rod 32. When the circular spirit level on the alignment rod 32 is centered, the center of the threaded hole 11A of the center identification member 11 and the center of the prism 41 are on the same vertical line, that is, the center of the receiver and the center of the prism 41 are on the same vertical line.

[0051] The prism fixing member 40 fixes the prism 41. The prism fixing member 40 is connected to the second end 23 through the second adjusting member 24. The prism 41 is located in the receiving cavity 21. Specifically, the prism fixing member 40 is connected to the prism 41, and the prism 41 can rotate along the prism fixing member 40 to adjust the angle of the prism 41. One end of the prism fixing member 40 is connected to the second end 23 of the frame 20, and the other end of the prism fixing member 40 is used to insert into the planar rod 43 on the CPⅢ control point for fixing the measuring frame 1 on the CPⅢ control point for subsequent measurement. The second adjusting member 24 can be an adjusting screw. For example, the second adjusting member 24 includes two adjusting screws, and the two adjusting screws are respectively connected to the frame 20 to fix the frame 20 and the prism fixing member 40. The prism fixing member 40 is located at the opening of the frame 20 to close the opening and fix the prism 41 in the receiving cavity 21.

[0052] The frame 20 can rotate around the second adjusting member 24. The direction of the line connecting the prism center and the mid - point 311 is related to the first direction (such as the left - right direction as shown) and the second direction (such as Figure 3 the left - right direction as shown) and the second direction (such as Figure 3are both perpendicular to the up-down direction shown. Specifically, the frame 20 can rotate around the central axis O' of the prism 41, and the second adjusting member 24 can adjust the tightness between the frame 20 and the prism fixing member 40. When it is necessary to rotate the frame 20, the second adjusting member 24 can be adjusted to release the fixation between the frame 20 and the prism fixing member 40. After the frame 20 rotates to the appropriate position, the second adjusting member 24 is adjusted to fix the frame 20 and the prism fixing member 40. The frame 20 is a symmetric structure and is symmetric about the central axis O in the left-right direction (such as Figure 2 the left-right direction shown), and the center of the prism 41 is located on this central axis O, that is, the distance from the center of the prism 41 to the frame on the left is the same as the distance to the frame on the right. The connection line between the center of the prism 41 and the midpoint of the fixing rod 31 is perpendicular to both the first direction and the second direction, that is, in the direction perpendicular to the paper surface and outward, the center of the prism 41 and the midpoint 311 of the fixing rod 31 are on the same straight line.

[0053] As Figure 4 shown, the prism fixing member 40 includes a support member 42, a fastening member 421, and a flat rod 43. Among them, the support member 42 is used to fix the prism 41, the fastening member 421 is used to fix the frame 20 on the support member 42, and one end of the flat rod 43 is connected to the end of the support member 42 away from the prism 41. Specifically, the support member 42 can be in a U-shaped structure and is fixed to the frame 20 through the second adjusting member to close the opening of the frame 20. One end of the support member 42 can be fixed to the second end 23 of the frame 20, and the frame 20 can be rotated and adjusted relative to the support member 42, that is, when the frame 20 rotates and adjusts, it will not drive the support member 42 to move, so that the support member 42 can stably support the prism 41. The prism 41 can be circular, and the support member 42 contacts both ends of a diameter of the circular prism 41, so that the prism 41 can be flipped along the diameter. The fastening member 421 is provided with a fixing groove. One side of the fastening member 421 is inserted and connected to the support member 42, and the other side of the fastening member 421 is connected to the frame 20 through the second adjusting member 24. Specifically, the fastening member 421 is in a cuboid shape, and the fixing groove is semi-hollowed out, and its shape is consistent with the structure on both sides of the support member 42, making the connection of the prism 41 stable after insertion connection. One end of the flat rod 43 is connected to the end of the support member 42 away from the prism 41. Specifically, the flat rod 43 can be in a long strip shape, one end of which is fixedly connected to the support member 42, and the other end is inserted into the measurement point on the ground to fix the entire measurement frame. The fixed connection method can be bolt connection or welding, etc. By fixing the flat rod 43 and the support member 42, the support member 42 supports the prism 41 and restricts the prism 41 from rotating along its central axis O', so as to facilitate adjusting the direction of the prism 41 when using the measurement frame for measurement, and at the same time, the measurement frame can be stably fixed.

[0054] When taking measurements, the measuring frame can be first installed at the location where measurements are needed. Adjust the second adjusting member 24 to release the fixing restriction between the frame 20 and the second adjusting member 24, and rotate the frame 20 so that the cross-section of the frame 20 is perpendicular to the horizontal plane, thereby making the frame 20 in a vertical state. Then, adjust the first adjusting member 12 so that the leveling plate extends along the second direction. After adjusting the entire leveling plate 10 and the frame 20, adjust the center marking member 11 so that the fixing rod 31 extends along the plumb direction. When centering is completed, the centering member 30 can be removed from the frame 20, so as not to restrict the rotation of the prism 41 around its central axis O', which may affect the measurement.

[0055] A measuring frame provided by an embodiment of the present invention includes a leveling plate, a frame, a centering member, and a prism fixing member. The leveling plate and the frame are adjusted through the first adjusting member and the second adjusting member to achieve the leveling of the leveling plate. A center marking member is connected to the leveling plate. By adjusting the center marking member, the centering rod is in a plumb position, so that the center of the prism is centered with the center of the threaded hole of the center marking member, thereby completing the leveling and centering of the entire measuring frame. In the embodiment of the present invention, the centering member is detachably connected to the frame, the centering rod in the centering member is connected to the midpoint of the fixing rod, and the center marking member on the leveling plate is adjusted to drive the centering rod to swing. When the centering rod is in a plumb position, the center of the prism and the center of the threaded hole of the center marking member are on the same plumb line, and thus the coordinates of the center of the prism can be directly obtained when using a receiver for measurement.

[0056] In some embodiments, as Figure 5 shown, the center marking member has a third adjusting member 111, and the third adjusting member 111 is used to fix the center marking member 11 on the leveling plate 10. Specifically, the third adjusting member 111 can be a fixing screw. By tightening the screw, the center marking member 11 can be fixed to the leveling plate 10. By loosening the screw, the fixing between the center marking member 11 and the leveling plate 10 can be released, so that the center marking member 11 can move along the leveling plate 10. The third adjusting member 111 can be provided at one end of the center marking member 11 in the third direction (such as the left-right direction as Figure 5 shown). The center marking member 11 is engaged with the leveling plate 10, and by adjusting the third adjusting member 111, the engagement tightness between the center marking member 11 and the leveling plate 10 is adjusted. Optionally, the third adjusting member 111 can also be a locking structure to lock the center marking member 11. For example, when the center marking member 11 needs to be fixed to the leveling plate 10, the center marking member 11 can be directly fixed to the leveling plate 10 through a pin.

[0057] By providing the third adjusting member, the tightness of the fixation between the center marking member and the leveling plate is adjusted, so as to facilitate the movement of the center marking member when the center marking member needs to be moved, and fix the center marking member when the position of the center marking member is adjusted.

[0058] In some embodiments, asFigure 5 As shown, the central identification member 11 has a first groove 112, and the centering rod 32 extends into the first groove 112. Specifically, the first groove 112 can be provided on one side of the central identification member 11 in the third direction (such as Figure 5 the left - right direction shown), and the first groove 112 is located on the central axis of the central identification member 11 in the third direction. When the centering member 30 is installed, one end of the centering rod 32 is extended into the first groove 112. Adjust the third adjusting member 111 to release the fixation between the central identification member 11 and the screed 10, move the central identification member 11, so that the centering rod 32 swings around the mid - point 311, and then fix the central identification member 11, thereby restricting the swing of the centering rod 32.

[0059] By providing the first groove, the connection between the central identification member and the centering rod is restricted, so that adjusting the central identification member can simultaneously adjust the rotation of the centering rod. At the same time, when the central identification member is fixed, the movement of the centering rod can also be restricted.

[0060] In some embodiments, as Figure 6 shown, a first tubular level 113 is provided on the screed 10, and the first tubular level 113 extends along the length direction of the screed 10. Specifically, the first tubular level 113 can be provided at one end of the screed 10 or directly embedded in the surface of the screed 10. The first tubular level 113 is cylindrical and extends along the length direction of the screed 10 (such as Figure 6 the left - right direction shown). There is a movable bubble inside the first tubular level 113, and the bubble moves as the screed 10 is adjusted. A central mark is provided at the center of the first tubular level 113 in its length direction to determine whether the bubble is centered. For example, when one end of the screed 10 is high and the other end is low, the bubble of the first tubular level 113 will move towards the higher section. Only when the screed 10 is in a flat state, the bubble of the first tubular level 113 is in the central position, so that the screed 10 can be leveled according to the position of the bubble.

[0061] Optionally, as Figure 6 shown, a second tubular level 114 is provided on the screed 10, and the second tubular level 114 extends along a direction perpendicular to the length direction of the screed 10. Specifically, the second tubular level 114 can be cylindrical, and its length direction can be along a direction perpendicular to the length direction of the screed 10. There is also a movable bubble in the second tubular level 114, and a central mark is provided at the center point in its length direction to determine whether the bubble is centered. Specifically, adjust the second adjusting member 24 to rotate the frame 20. If the frame 20 is not in a vertical state, the bubble of the second tubular level 114 is not in the central position, so that it can be determined whether the frame 20 is adjusted to a suitable position.

[0062] Optionally, as Figure 6As shown in the figure, a third circular spirit level 312 is provided on the centering rod 32. Specifically, the third circular spirit level 312 can be a circular spirit level, in which there is also a bubble that can move freely. There is a center mark at the center of the third circular spirit level 312 to determine whether the bubble is centered. Specifically, while observing the position of the third circular spirit level 312 when the centering rod 32 rotates around the midpoint 311, when the bubble of the third circular spirit level 312 is at its center position, the plumb line direction where the centering rod 32 is located is parallel to the direction from the center of the prism 41 to the center of the threaded hole 11A.

[0063] By providing a spirit level, according to whether the bubble of the spirit level is in the center position, it is convenient to perform centering operations on the measuring frame, and the structure of the spirit level is small and simple, which is convenient for installation and use.

[0064] In some embodiments, as shown in combination with Figure 6 and Figure 7 shown, the support member 42 is connected with a fastener 421, and the second end 23 is connected with the support member 42 through the fastener 421. The fastener 421 is provided with a fixing groove 4211, and the end of the support member 42 away from the flat bar 43 can be inserted into the fixing groove 4211, so as to fix the fastener 421 and the support member 42. The fastener 421 is connected with the frame 20 through a second adjusting member 24, so that the frame 20 is indirectly connected with the support member 42 to reduce the damage to the support member 42 due to opening holes. At present, the prism fixing member 40 on the market does not have a structure connected with the frame 20. By providing the fastener 421, the general applicability of the measuring frame provided by the embodiments of the present invention can be improved.

[0065] In some embodiments, the measuring frame further includes a receiver, and the receiver is threadedly connected to the end of the center identification member 11 away from the leveling plate 10. Specifically, there is a connecting member 115 for connecting the receiver at the center of the threaded hole 11A of the center identification member 11. The connecting member 115 has threads. For example, the connecting member 115 is a screw or a bolt, and the connecting member 115 is connected to the center of the receiver. Specifically, after leveling is completed, the center identification member 11 is adjusted so that the centering rod 32 is in the plumb position. After the center identification member 11 is fixed, the receiver is installed, so that it can be determined that the center of the receiver and the center of the prism 41 are on the same plumb line, which is convenient for subsequent measurements.

[0066] The embodiments of the present invention also provide an installation method for a measuring frame, as shown in Figure 8 shown, including:

[0067] S10. Connect the support member 42 and the flat bar 43, and insert the flat bar 43 into the measurement point.

[0068] Specifically, one end of the flat bar 43 is connected to the support member 42, and the other end is inserted into the measurement point on the ground, so as to fix the entire measuring frame at the measurement point.

[0069] S20. Connect the frame 20 to the prism fixture 40 through the fastener 421, adjust the angle between the frame 20 and the second adjusting member 24 through the second adjusting member 24, connect the leveling plate 10 to the frame 20 through the first adjusting member 12, and the first adjusting member 12 adjusts the position of the leveling plate 10 in the second direction.

[0070] Specifically, the prism fixture 40 includes a support member 42, a fastener 421, and a flat bar 43. The support member 42 is connected to the prism 41 to support the prism 41, enabling the prism 41 to rotate along its central axis O' to adjust the angle. The fastener 421 is connected to the support member 42 in an insertion manner and is connected to the frame 20 through the second adjusting member 24. By adjusting the second adjusting member 24, the fixation between the frame and the prism fixture 40 is released, allowing the frame 20 to rotate along the central axis O', thereby adjusting the position of the frame 20. The frame 20 has opposite first and second ends 22 and 23 in the second direction. One end of the first adjusting member 12 is connected to the first end 22, and the leveling plate 10 is connected to the other end of the first adjusting member 12. It can be seen that the leveling plate 10 is supported at the first end 22 of the frame 20 through the first adjusting member 12. The first adjusting member 12 can adjust the position in the second direction, thereby adjusting the position of the leveling plate 10 in the second direction, and further adjusting the flatness of the leveling plate in the second direction. Among them, the second direction can be the up-and-down direction in the use state.

[0071] S30. Connect the center marking member 11 and the leveling plate 10, and the center marking member 11 can move along the leveling plate 10.

[0072] Specifically, the third adjusting member 111 can be adjusted to snap the center marking member 11 onto the leveling plate 10, enabling the center marking member 11 to slide back and forth on the leveling plate 10 to adjust the position.

[0073] S40. Connect the centering member 30 to the frame 20 through the fixing rod 31, and the centering rod 32 of the centering member 30 points to the center marking member 11.

[0074] Specifically, the centering member 30 has a fixing rod 31 and a centering rod 32 connected to each other. Among them, at both ends of the fixing rod 31 in its length, protrusions are respectively provided, and grooves are provided on the second end 23 of the frame 20. The fixing rod 31 is fixed to the second end 23 by inserting the protrusions into the grooves. The centering rod 32 is connected to the midpoint 311 of the fixing rod 31 in its length direction, and the centering rod 32 can rotate around the midpoint 311. During installation, the sharp end of the centering rod 32 extends towards the leveling plate 10 and is placed in the first groove 112 of the center marking member 11. By adjusting the position of the center marking member 11 on the leveling plate 10, the swing of the centering rod 32 can be driven and adjusted.

[0075] In some embodiments, such as Figure 9As shown, the frame 20 is connected to the prism fixture 40 by a fastener 421. The rotation angle between the frame 20 and the second adjusting member 24 is adjusted by the second adjusting member 24. The leveling plate 10 is connected to the frame 20 by the first adjusting member 12. The steps of adjusting the position of the leveling plate 10 in the second direction specifically include:

[0076] S210. Connect the frame 20 to the prism fixture 40 by the fastener 421, rotate the frame 20 to center the bubble of the second tube level 114, and tighten the second adjusting member 24 to fix the frame 20 to the prism fixture 40.

[0077] Specifically, connect the frame 20 to the prism fixture 40 by the fastener 421, adjust the second adjusting member 24 to release the fixing relationship between the frame 20 and the prism fixture 40, rotate the frame 20 until the bubble of the second tube level 114 is centered, and then adjust the second adjusting member 24 again to fix the frame 20 and the prism fixture 40.

[0078] S220. Connect the leveling plate 10 to the frame 20 by the first adjusting member 111, adjust the first adjusting member 111 to level the leveling plate 10, and center the first tube level 113 on the leveling plate 10.

[0079] Specifically, there may be 2 first adjusting members 111, symmetrically distributed on the left and right sides of the leveling plate 10. Connect the leveling plate 10 to the frame 20 by the first adjusting member 111, and adjust the second adjusting member 111 to change the up and down position of the leveling plate 10 until the bubble of the first tube level 113 is centered.

[0080] It should be understood that during the installation of the measuring frame, the above steps S210 and S220 are often repeated until the leveling plate 10 is leveled. For example, the processes of steps S210 and S220 will affect each other, and steps S210 and S220 are repeated until both the first tube level 113 and the second tube level 114 are centered.

[0081] Particularly, when the center marking member 11 moves on the leveling plate 10, it can drive the centering rod 32 to rotate around the midpoint 311. When the bubble of the third circular level 312 is centered, the pointing direction of the centering rod 32 is parallel to the direction from the center of the prism to the center of the threaded hole 11A of the center marking member 11, so that the center of the threaded hole 11A of the center marking member 11 is aligned with the center of the prism.

[0082] In some embodiments, the installation method of the measuring frame further includes:

[0083] S50. Threadedly connect the receiver to the center marking member 11.

[0084] Specifically, after the leveling and centering of the measuring frame are completed, at this time, the center of the threaded hole 11A of the center identification member 11 and the center of the prism 41 are on the same plumb line. The receiver is threadedly connected to the center identification member 11 through the connecting member 115, so that the receiver is installed on the center identification member 11, making the center of the receiver centered with the center of the prism 41, so that the user can use the measuring frame for subsequent measurements. For example, start the measurement after removing the centering member 30.

[0085] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A measuring stand, characterized in that, Comprising: A screed board, connected with a center identification member, and the center identification member can move along the screed board; A frame, having a hollow accommodation cavity, the frame having opposite first and second ends, the first end being connected to the screed board through a first adjusting member; the first adjusting member adjusts the position of the screed board in a second direction; An alignment member, having a fixing rod and an alignment rod, the fixing rod extending along a first direction, both ends of the fixing rod in the first direction being detachably connected to the frame respectively, the first direction being perpendicular to the second direction, and the second direction being the height direction of the measuring frame; the midpoint of the fixing rod in the first direction is connected with the alignment rod, and the alignment rod can rotate along the midpoint, and the alignment rod points from the midpoint to the center identification member; A prism fixing member, fixing a prism, the prism fixing member being connected to the second end through a second adjusting member, and the prism being located in the accommodation cavity; And A receiver, threadedly connected to one end of the center identification member away from the screed board, wherein, the frame can rotate around the second adjusting member, and the direction of the connection line between the center of the prism and the midpoint is perpendicular to both the first direction and the second direction.

2. The measuring stand according to claim 1, characterized in that The center identification member has a third adjusting member, and the third adjusting member is used to fix the center identification member on the screed board.

3. The measuring frame according to claim 2, characterized in that, The side surface of the center identification member has a first groove, and the alignment rod extends into the first groove.

4. The measuring stand according to claim 1, characterized in that, A first tubular level is provided on the screed board, and the first tubular level extends along the length direction of the screed board; and / or, A second tubular level is provided on the screed board, and the second tubular level extends along a direction perpendicular to the length direction of the screed board; and / or, A third circular level is provided on the alignment rod.

5. The measuring stand according to claim 1, characterized in that, The prism fixing member includes: A support member, for fixing the prism; A fastener, for fixing the frame on the support member; and A flat bar, one end of the flat bar being connected to the end of the support member away from the prism.

6. The measuring frame according to claim 5, characterized in that, The support member is connected with a fastener, and the second end is connected to the support member through the fastener.

7. A method for installing a measuring rack, characterized in that, The measuring frame includes: A screed board, connected with a center identification member, and the center identification member can move along the screed board; A frame, having a hollow accommodation cavity, the frame having opposite first and second ends, the first end being connected to the screed board through a first adjusting member; the first adjusting member adjusts the position of the screed board in a second direction; An alignment member, having a fixing rod and an alignment rod, the fixing rod extending along a first direction, both ends of the fixing rod in the first direction being detachably connected to the frame respectively, the first direction being perpendicular to the second direction, and the second direction being the height direction of the measuring frame; the midpoint of the fixing rod in the first direction is connected with the alignment rod, and the alignment rod can rotate along the midpoint, and the alignment rod points from the midpoint to the center identification member; A prism fixing member, fixing a prism, the prism fixing member being connected to the second end through a second adjusting member, and the prism being located in the accommodation cavity; and A receiver, threadedly connected to an end of the central identification member away from the leveling plate, The installation method of the measuring frame includes: Connect the support member and the planar rod of the prism fixing member, and insert the planar rod at the measuring point; Connect the frame to the prism fixing member through the fastener of the prism fixing member, adjust the rotation angle between the frame and the second adjusting member through the second adjusting member, connect the leveling plate to the frame through the first adjusting member, and adjust the position of the leveling plate in the second direction; Connect the central identification member to the leveling plate, and the central identification member moves along the leveling plate; Connect the centering member to the frame through the fixing rod, and the centering rod of the centering member points to the central identification member; and Threadedly connect the receiver to an end of the central identification member away from the leveling plate.

8. The installation method of the measuring frame according to claim 7, characterized in that, The steps of connecting the frame to the prism fixing member through the fastener of the prism fixing member, adjusting the rotation angle between the frame and the second adjusting member through the second adjusting member, connecting the leveling plate to the frame through the first adjusting member, and adjusting the position of the leveling plate in the second direction specifically include: Connect the frame to the prism fixing member through the fastener, rotate the frame to make the bubble of the second tube level on the leveling plate centered, and tighten the second adjusting member to fix the frame to the prism fixing member; Connect the leveling plate to the frame through the first adjusting member, adjust the first adjusting member to level the leveling plate, and make the first tube level on the leveling plate centered.

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