A device for measuring verticality of close-range objects

Abstract

The present invention discloses a device for measuring the verticality of objects at close range, comprising a mounting base, wherein two fixed plates are fixedly mounted on the mounting base, a rotating plate is rotatably mounted on the fixed plate via a pin, the rotating plate is fixedly connected to the mounting plate, a telescopic mechanism is mounted in the mounting plate, the telescopic mechanism is connected to the telescopic base, a measuring mechanism is mounted on the telescopic base, and a support rod is mounted between the bottom of the mounting plate and the mounting base. When the mounting plate is rotated to fit into the mounting base, the telescopic mechanism automatically extends and retracts, thereby reducing the size of the device and making it easy to carry. During measurement, the mounting plate is rotated to the vertical mounting base, at which time the telescopic mechanism is linked and extended, causing the telescopic base to extend, and the mounting plate is supported and fixed by the support rod. The mounting base fits into a tower crane or a building wall, and the measuring mechanism performs multi-directional measurement, thereby ensuring that the verticality of the tower crane or the building in all directions can be quickly measured. Furthermore, the device requires a small space for practical use, and avoids being blocked by intermediate objects when erected at a long distance.

Description

Technical Field

[0001] The present invention relates to the technical field of verticality measurement, and in particular to a verticality measurement device for close-range objects. Background Art

[0002] In building construction, it is often necessary to use a tower crane for lifting and hoisting. The tower crane is made of standard tower crane sections connected one by one. During tower crane construction and building construction, it is necessary to measure the verticality of the tower crane or the building wall to ensure that the tower crane and the building are vertical and avoid the risk of tipping due to tilting caused by substandard verticality. Current verticality measurement is generally performed by a total station over a long distance, which has complex costs and steps, and requires the total station to be placed at a long distance for measurement. Tower cranes and other building spaces often have a large amount of building materials on the other side, which can easily cause the total station to be blocked. Existing plumb bob hanging measurements cannot obtain accurate data and are easily affected by wind. Moreover, when the plumb bob is measured, when the tilt direction is toward the tower crane or the wall itself, the plumb bob will directly fit on the measuring surface and cannot reflect the tilt. In response to the above problems, the inventors have proposed a verticality measurement device for close-range objects to solve the above problems. Summary of the Invention

[0003] In order to solve the problems that the current verticality measurement is generally carried out by a total station at a long distance, which is costly and has complicated steps, and the existing plumb bob hanging measurement cannot obtain accurate data and is easily affected by wind, and when the plumb bob is measured, when the tilt direction is toward the tower crane or the wall itself, the plumb bob will directly fit on the measuring surface and cannot reflect the tilt situation; the purpose of the present invention is to provide a verticality measuring device for close-range objects.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a device for measuring the verticality of close-range objects, comprising a mounting base, on which two fixed plates are fixedly installed, a rotating plate is rotatably installed on the fixed plate via a pin, the rotating plate is fixedly connected to the mounting plate, a telescopic mechanism is installed in the mounting plate, the telescopic mechanism is connected to the telescopic base, a measuring mechanism is installed on the telescopic base, and a support rod is installed between the bottom of the mounting plate and the mounting base.

[0005] Through the above technical solution, when the mounting plate is rotated to fit into the mounting seat, the telescopic mechanism automatically extends and retracts, thereby reducing the size of the device and making it easy to carry. During measurement, the mounting plate is rotated to the vertical mounting seat. At this time, the telescopic mechanism is linked and extended, causing the telescopic seat to extend, and the mounting plate is supported and fixed by the support rod. The mounting seat fits into the tower crane or the building wall, and multi-directional measurement is performed through the measuring mechanism, thereby ensuring that the verticality of the tower crane or the building in all directions can be quickly measured. In addition, the practicality requires little space, and it avoids being blocked by intermediate objects when erected at a long distance.

[0006] In a preferred implementation case, multiple connecting plates are fixedly installed on the outer walls of both sides of the mounting seat, fixing bolts are threadedly installed on the connecting plates, and fitting plates are fixedly installed on the side walls of the telescopic seat, and the fitting plates are detachably connected to the bottom of the mounting seat by bolts.

[0007] In a preferred embodiment, a positioning plate is fixedly mounted on one end of the mounting plate away from the telescopic seat, and the horizontal length of the positioning plate is equal to the distance from the end surface of the mounting plate to the mounting seat.

[0008] In a preferred embodiment, the support rod includes a rotation groove, a rotation groove is opened at the bottom of the outer wall of the mounting seat, one end of the rotating cylinder is rotatably connected in the rotation groove, the inner cavity of the other end of the rotating cylinder is connected to the screw through a threaded structure, and a socket is opened at the bottom of the mounting plate, and the top of the screw matches the socket.

[0009] In a preferred embodiment, the telescopic mechanism includes a rotating shaft, the mounting plate is rotated and sleeved on one end of the mounting seat, a receiving groove is opened at the other end of the mounting plate, the rotating shaft passes through the receiving groove, a semi-bevel gear plate is fixedly installed on the inner wall of the fixed plate, a bevel gear is fixedly installed on one end of the rotating shaft close to the mounting seat, the bevel gear engages the semi-bevel gear plate, a sliding cylinder is slidably engaged in the receiving groove, a spiral groove is opened on the circumferential outer wall of the sliding cylinder, the rotating shaft rotates at one end away from the mounting seat and extends into the sliding cylinder, a push-pull rod is fixedly installed on the outer wall of the rotating shaft, the push-pull rod is slidably engaged in the spiral groove, and the end face of the sliding cylinder is fixedly connected to the telescopic seat.

[0010] In a preferred embodiment, the semi-bevel gear plate is half of a large-diameter bevel gear, the axis of the semi-bevel gear plate coincides with the axis of the pin connecting the rotating plate and the fixed plate, and the diameter of the push-pull rod is equal to the width of the spiral groove.

[0011] Through the above technical solution, when the mounting plate rotates through the rotating plate, the bevel gear rolls along the semi-bevel gear plate, thereby driving the rotating shaft to rotate. When the rotating shaft rotates, it drives the push-pull rod to slide along the spiral groove, and the push-pull rod pushes the sliding cylinder to slide through the spiral groove to achieve automatic extension and retraction. When the mounting plate is rotated to the vertical mounting seat, the sliding cylinder slides out of the storage groove, making it convenient for the telescopic seat to be extended for measurement. When the mounting plate is rotated to fit the mounting seat, the sliding cylinder slides into the storage groove, reducing the volume of the device and making it easy to carry.

[0012] In a preferred implementation case, a limiting groove is opened on the inner wall of the storage groove, the length of the limiting groove is smaller than the length of the storage groove, and a limiting block is fixedly installed on the outer wall of one end of the sliding cylinder away from the telescopic seat, and the limiting block slides and engages with the limiting groove.

[0013] In a preferred embodiment, the measuring mechanism includes a fixed plate, which is fixedly mounted on a telescopic seat, and a vertical shaft is rotatably sleeved on the top of the fixed plate, the top of the vertical shaft is fixedly connected to one end of a rotating rod, and a vertical plate is fixedly mounted on the bottom of the other end of the rotating rod, and a windproof groove is opened on the vertical plate, and the inner wall of the windproof groove is rotatably connected to a plumb rod through a pin shaft, and the inner wall of the windproof groove is provided with a verticality scale.

[0014] In a preferred embodiment, a pointer is fixedly mounted on the bottom outer wall of the vertical shaft, a direction scale is provided on the top edge of the fixed plate, a compass is fixedly mounted on the top of the vertical shaft, and a transparent plate is mounted on the vertical plate outside the windproof groove.

[0015] In a preferred implementation case, the plumb bob includes a vertical rod, which is rotatably connected to the top of the inner wall of the windproof groove through a pin shaft, and a gravity head with a conical structure is fixedly installed at the bottom of the vertical rod. A central cavity is opened in the middle of the gravity head, and a gravity ball is provided in the middle of the central cavity, and a spring is installed between the outer wall of the gravity ball and the inner wall of the central cavity.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. After the mounting base fits the measuring surface, tighten the fixing bolts to tightly clamp it on the tower crane or building, making it easy to fix and use the device. When the mounting plate rotates through the rotating plate, the bevel gear rolls along the semi-bevel gear plate, thereby driving the rotating shaft to rotate. When the rotating shaft rotates, the push-pull rod drives the push-pull rod to slide along the spiral groove. The push-pull rod pushes the sliding cylinder to slide through the spiral groove to achieve automatic telescopic expansion. When the mounting plate is rotated to the vertical mounting base, the sliding cylinder slides out of the storage groove, making it easy to extend the telescopic base for measurement. When the mounting plate is rotated to fit the mounting base, the sliding cylinder slides into the storage groove, reducing the size of the device and making it easy to carry.

[0018] 2. When the mounting plate is rotated to the vertical mounting seat, the positioning plate is just against the mounting seat, thereby positioning. At this time, the rotating cylinder is rotated out of the rotating groove, and the screw is rotated so that the screw extends out of the rotating cylinder. After the screw is inserted into the socket, the mounting plate is completely fixed, which is convenient for use. When carrying, the screw is rotated into the rotating cylinder, thereby moving away from the mounting plate. The rotating cylinder is rotated into the rotating groove for storage, and the mounting plate is attached to the mounting seat, so that the attachment plate is attached to the bottom of the mounting seat and fixed with bolts, which is convenient for carrying;

[0019] 3. When the mounting plate is vertically mounted on the mounting base, the plumb bob remains vertical under gravity, and the vertical axis is parallel to the tower crane or building surface. The degree between the plumb bob and the verticality scale is the verticality deviation at this time. The rotating rod rotates through the vertical axis, so that the vertical plate can be oriented in different directions, thereby performing multi-directional measurement. The compass is used to easily determine the direction of the device placement. The pointer and direction scale are used to determine the direction of the rotating rod. Combined with the verticality scale reading, the direction of the tower crane or building is determined to determine which direction is the most severely tilted.

[0020] 4. The gravity head ensures that the plumb bob is pointing vertically downward. When the rod is rotated in different directions, the plumb bob will swing back and forth due to the change in measurement direction and rotational inertia. When swinging, the gravity ball will lag behind the swing direction of the gravity head due to inertia. For example, when the gravity head swings to the left, the inertia delay of the gravity ball will drive the elastic deformation of the spring, thereby reducing the swing amplitude and accelerating the stability of the plumb bob, thereby improving measurement efficiency.

[0021] 5. Multi-directional measurement is carried out through the measuring mechanism to ensure that the verticality of the tower crane or building in all directions can be measured quickly, and the practicality requires a small space to avoid being blocked by intermediate objects when erected at a long distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle.

[0025] Figure 3 It is a schematic diagram of the structure of the spiral groove of the present invention.

[0026] Figure 4 For the present invention Figure 1 Enlarged structural diagram at point B in the middle.

[0027] Figure 5 It is a schematic diagram of the cross-sectional structure of the plumb bob rod of the present invention.

[0028] Figure 6 It is a structural schematic diagram of the support rod of the present invention.

[0029] In the figure: 1. Mounting seat; 2. Fixed plate; 3. Rotating plate; 4. Mounting plate; 41. Positioning plate; 5. Telescopic mechanism; 51. Rotating shaft; 52. Semi-bevel gear plate; 53. Bevel gear; 54. Storage groove; 55. Sliding cylinder; 56. Spiral groove; 57. Push-pull rod; 58. Limiting groove; 59. Limiting block; 6. Telescopic seat; 7. Measuring mechanism; 71. Fixed plate; 72. Vertical axis; 73. Pointer; 74. Direction scale; 75. Rotating rod; 76. Vertical plate; 77. Windproof groove; 78. Plumb rod; 781. Vertical rod; 782. Gravity head; 783. Center cavity; 784. Gravity ball; 785. Spring; 79. Verticality scale; 8. Support rod; 81. Rotating groove; 82. Rotating cylinder; 83. Screw; 84. Jack; 9. Connecting plate; 10. Fixing bolt; 11. Fitting plate DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example: Figure 1-6 As shown, the present invention provides a device for measuring the verticality of close-range objects, including a mounting base 1, two fixed plates 2 are fixedly mounted on the mounting base 1, a rotating plate 3 is rotatably mounted on the fixed plate 2 via a pin, the rotating plate 3 is fixedly connected to the mounting plate 4, a telescopic mechanism 5 is installed in the mounting plate 4, the telescopic mechanism 5 is connected to the telescopic base 6, a measuring mechanism 7 is installed on the telescopic base 6, and a support rod 8 is installed between the bottom of the mounting plate 4 and the mounting base 1.

[0032] Through the above technical solution, when the mounting plate 4 is rotated to fit into the mounting seat 1, the telescopic mechanism 5 automatically extends and retracts, thereby reducing the size of the device and making it easy to carry. During measurement, the mounting plate 4 is rotated to be perpendicular to the mounting seat 1. At this time, the telescopic mechanism 5 is linked and extended, so that the telescopic seat 6 is extended, and the mounting plate 4 is supported and fixed by the support rod 8. The mounting seat 1 fits the tower crane or the building wall, and multi-directional measurement is performed through the measuring mechanism 7, thereby ensuring that the verticality of the tower crane or the building in all directions can be quickly measured, and practicality requires little space to avoid being blocked by intermediate objects when erected at a long distance.

[0033] Furthermore, multiple connecting plates 9 are fixedly installed on the outer walls of both sides of the mounting base 1, and fixing bolts 10 are threadedly installed on the connecting plates 9. The side walls of the telescopic base 6 are fixedly installed with bonding plates 11, and the bonding plates 11 are detachably connected to the bottom of the mounting base 1 by bolts.

[0034] Through the above technical solution, after the mounting base 1 is fitted to the measuring surface, the fixing bolts 10 are tightened, thereby tightly clamping it on the tower crane or building, making it easier to fix and use the device.

[0035] Furthermore, a positioning plate 41 is fixedly installed at one end of the mounting plate 4 away from the telescopic seat 6. The horizontal length of the positioning plate 41 is equal to the distance from the end face of the mounting plate 4 to the mounting seat 1. The support rod 8 includes a rotating groove 81. A rotating groove 81 is opened at the bottom of the outer wall of the mounting seat 1. One end of the rotating cylinder 82 is rotatably connected in the rotating groove 81. The inner cavity of the other end of the rotating cylinder 82 is connected to the screw 83 through a threaded structure. A socket 84 is opened at the bottom of the mounting plate 4, and the top of the screw 83 matches the socket 84.

[0036] Through the above technical solution, when the mounting plate 4 is rotated to the vertical mounting seat 1, the positioning plate 41 is just against the mounting seat 1, thereby positioning. At this time, the rotating cylinder 82 is rotated out of the rotating groove 81, and the screw 83 is rotated so that the screw 83 extends out of the rotating cylinder 82. After the screw 83 is inserted into the socket 84, the mounting plate 4 is completely fixed, which is convenient for use. When carrying, the screw 83 is rotated into the rotating cylinder 82, thereby moving away from the mounting plate 4, and the rotating cylinder 82 is rotated into the rotating groove 81 for storage. The mounting plate 4 is fitted against the mounting seat 1, so that the fitting plate 11 is fitted against the bottom of the mounting seat 1 and is fixed by bolts, which is convenient for carrying.

[0037] Furthermore, the telescopic mechanism 5 includes a rotating shaft 51, one end of the mounting plate 4 close to the mounting seat 1 is rotated to sleeve the rotating shaft 51, the other end of the mounting plate 4 is provided with a receiving groove 54, the rotating shaft 51 passes through the receiving groove 54, the inner wall of the fixed plate 2 is fixedly installed with a semi-bevel gear plate 52, the end of the rotating shaft 51 close to the mounting seat 1 is fixedly installed with a bevel gear 53, the bevel gear 53 engages with the semi-bevel gear plate 52, and a sliding cylinder 55 is slidably engaged in the receiving groove 54, and the outer circumference of the sliding cylinder 55 is fixedly installed. A spiral groove 56 is opened on the wall, and the end of the rotating shaft 51 away from the mounting seat 1 rotates and extends into the sliding cylinder 55. A push-pull rod 57 is fixedly installed on the outer wall of the rotating shaft 51, and the push-pull rod 57 slides and is engaged in the spiral groove 56. The end face of the sliding cylinder 55 is fixedly connected to the telescopic seat 6. The semi-bevel gear plate 52 is half of the large-diameter bevel gear. The axis of the semi-bevel gear plate 52 coincides with the axis of the pin connecting the rotating plate 3 and the fixed plate 2. The diameter of the push-pull rod 57 is equal to the width of the spiral groove 56.

[0038] Through the above technical solution, when the mounting plate 4 is rotated by the rotating plate 3, the bevel gear 53 rolls along the semi-bevel gear plate 52, thereby driving the rotating shaft 51 to rotate. When the rotating shaft 51 rotates, it drives the push-pull rod 57 to slide along the spiral groove 56, and the push-pull rod 57 pushes the sliding cylinder 55 to slide through the spiral groove 56, thereby realizing automatic telescopic extension and retraction. When the mounting plate 4 is rotated to be perpendicular to the mounting seat 1, the sliding cylinder 55 slides out of the storage groove 54, making it convenient for the telescopic seat 6 to be extended for measurement. When the mounting plate 4 is rotated to fit the mounting seat 1, the sliding cylinder 55 slides into the storage groove 54, reducing the volume of the device and making it easy to carry.

[0039] Furthermore, a limiting groove 58 is opened on the inner wall of the storage groove 54 , the length of the limiting groove 58 is smaller than the length of the storage groove 54 , and a limiting block 59 is fixedly installed on the outer wall of one end of the sliding cylinder 55 away from the telescopic seat 6 , and the limiting block 59 slides and engages with the limiting groove 58 .

[0040] Through the above technical solution, the sliding cylinder 55 is guided and limited by the limiting block 59 and the limiting groove 58 to prevent the sliding cylinder 55 from rotating along with the rotating shaft 51 .

[0041] Furthermore, the measuring mechanism 7 includes a fixed plate 71, which is fixedly mounted on the telescopic seat 6. The top of the fixed plate 71 is rotatably sleeved with a vertical shaft 72. The top of the vertical shaft 72 is fixedly connected to one end of a rotating rod 75. The other end of the rotating rod 75 is fixedly mounted with a vertical plate 76 at the bottom. A windproof groove 77 is provided on the vertical plate 76. The inner wall of the windproof groove 77 is rotatably connected to a plumb rod 78 through a pin shaft. The inner wall of the windproof groove 77 is provided with a verticality scale 79.

[0042] Through the above technical solution, when the mounting plate 4 is vertically mounted on the mounting base 1, the plumb rod 78 remains vertical under gravity, and the vertical axis 72 is parallel to the tower crane or the building surface. At this time, the degree between the plumb rod 78 and the verticality scale 79 is the verticality deviation at this time, and the rotating rod 75 rotates through the vertical axis 72, so that the vertical plate 67 can be oriented in different directions, thereby performing multi-directional measurement. For example, when the tower crane or the building tilts to the east, the measurement reading is most accurate when the vertical plate 76 is turned to the north and south.

[0043] Furthermore, a pointer 73 is fixedly mounted on the bottom outer wall of the vertical shaft 72, a direction scale 74 is provided on the top edge of the fixed plate 71, a compass is fixedly mounted on the top of the vertical shaft 72, and a transparent plate is mounted on the vertical plate 76 outside the windproof groove 77.

[0044] Through the above technical solution, the compass can be used to easily determine the direction of the device placement position. Combined with the pointer 73 and the direction scale 74, the direction of the rotating rod 75 can be determined. Combined with the reading of the verticality scale 79, it can be determined in which direction the tower crane or building is most seriously tilted.

[0045] Furthermore, the plumb bob 78 includes a vertical rod 781, which is rotatably connected to the top of the inner wall of the windproof groove 77 through a pin shaft. A gravity head 782 with a conical structure is fixedly installed at the bottom of the vertical rod 781. A central cavity 783 is opened in the middle of the gravity head 782, and a gravity ball 784 is provided in the middle of the central cavity 783. A spring 785 is installed between the outer wall of the gravity ball 784 and the inner wall of the central cavity 783.

[0046] Through the above technical solution, the gravity head 782 ensures that the plumb rod 78 is vertically downward. When the rotating rod 75 turns to different directions, the plumb rod 78 will swing back and forth due to the change in measuring direction and rotational inertia. When swinging, the gravity ball 784 will be delayed with the swinging direction of the gravity head 782 due to inertia. For example, when the gravity head 782 swings to the left, the inertia delay of the gravity ball 784 will drive the elastic deformation of the spring 785, thereby reducing the swing amplitude and accelerating the stability of the plumb rod 78.

[0047] Working principle: After the mounting base 1 is fitted to the measuring surface, the fixing bolts 10 are tightened, thereby tightly clamping it on the tower crane or building, making it easy to fix and use the device. When the mounting plate 4 is rotated by the rotating plate 3, the bevel gear 53 rolls along the semi-bevel gear plate 52, thereby driving the rotating shaft 51 to rotate. When the rotating shaft 51 rotates, it drives the push-pull rod 57 to slide along the spiral groove 56. The push-pull rod 57 pushes the sliding cylinder 55 to slide through the spiral groove 56 to achieve automatic telescopic expansion and contraction. When the mounting plate 4 is rotated to the vertical mounting base 1, the sliding cylinder 55 slides out of the storage groove 54, making it convenient for the telescopic base 6 to extend for measurement. When the mounting plate 4 is rotated When the mounting base 1 is fitted, the sliding cylinder 55 slides into the receiving groove 54, reducing the size of the device and making it easy to carry. When the mounting plate 4 is rotated to be perpendicular to the mounting base 1, the positioning plate 41 is just against the mounting base 1, thereby positioning. At this time, the rotating cylinder 82 is rotated out of the rotating groove 81, and the screw 83 is rotated so that the screw 83 extends out of the rotating cylinder 82. After the screw 83 is inserted into the insertion hole 84, the mounting plate 4 is completely fixed, making it easy to use. When carrying, the screw 83 is rotated into the rotating cylinder 82, thereby moving away from the mounting plate 4. The rotating cylinder 82 is rotated into the rotating groove 81 for storage, and the mounting plate 4 is fitted with the mounting base 1, so that The fitting plate 11 fits the bottom of the mounting base 1 and is fixed by bolts, so that it is easy to carry. When the mounting plate 4 is vertical to the mounting base 1, the plumb rod 78 remains vertical under gravity, and the vertical axis 72 is parallel to the tower crane or the building surface. At this time, the degree between the plumb rod 78 and the vertical scale 79 is the verticality deviation at this time, and the rotating rod 75 rotates through the vertical axis 72, so that the vertical plate 67 can be oriented in different directions, thereby performing multi-directional measurement. The compass is used to easily determine the direction of the device placement position, and the pointer 73 and the direction scale 74 are combined to determine the direction of the rotating rod 75. The verticality scale 79 reading is combined to determine in which direction the tower crane or building is tilted most seriously. The gravity head 782 ensures that the plumb rod 78 is vertically downward. When the rotating rod 75 turns to different directions, the plumb rod 78 will swing back and forth due to the change in measurement direction and rotational inertia. When swinging, the gravity ball 784 will be delayed with the swing direction of the gravity head 782 due to inertia. For example, when the gravity head 782 swings to the left, the inertia delay of the gravity ball 784 will drive the elastic deformation of the spring 785, thereby reducing the swing amplitude and accelerating the stability of the plumb rod 78, thereby improving measurement efficiency.

[0048] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A device for measuring the verticality of a close-range object, comprising a mounting base (1), characterized in that: Two fixed plates (2) are fixedly mounted on the mounting seat (1); a rotating plate (3) is rotatably mounted on the fixed plate (2) via a pin shaft; the rotating plate (3) is fixedly connected to the mounting plate (4); a telescopic mechanism (5) is mounted in the mounting plate (4); the telescopic mechanism (5) is connected to the telescopic seat (6); a measuring mechanism (7) is mounted on the telescopic seat (6); a support rod (8) is mounted between the bottom of the mounting plate (4) and the mounting seat (1); The telescopic mechanism (5) includes a rotating shaft (51), one end of the mounting plate (4) close to the mounting seat (1) is rotatably sleeved with the rotating shaft (51), the other end of the mounting plate (4) is provided with a receiving groove (54), the rotating shaft (51) passes through the receiving groove (54), a semi-bevel gear plate (52) is fixedly mounted on the inner wall of the fixing plate (2), and a bevel gear (53) is fixedly mounted on the end of the rotating shaft (51) close to the mounting seat (1), the bevel gear (53) meshing with the semi-bevel gear plate (52). A bevel gear plate (52), a sliding cylinder (55) is slidably engaged in the receiving groove (54), a spiral groove (56) is provided on the circumferential outer wall of the sliding cylinder (55), one end of the rotating shaft (51) away from the mounting seat (1) is rotated to extend into the sliding cylinder (55), a push-pull rod (57) is fixedly installed on the outer wall of the rotating shaft (51), the push-pull rod (57) is slidably engaged in the spiral groove (56), and the end face of the sliding cylinder (55) is fixedly connected to the telescopic seat (6); The measuring mechanism (7) includes a fixed plate (71), the fixed plate (71) is fixedly mounted on the telescopic seat (6), the top of the fixed plate (71) is rotatably sleeved with a vertical shaft (72), the top of the vertical shaft (72) is fixedly connected to one end of a rotating rod (75), the bottom of the other end of the rotating rod (75) is fixedly mounted with a vertical plate (76), a windproof groove (77) is opened on the vertical plate (76), the inner wall of the windproof groove (77) is rotatably connected to a plumb rod (78) through a pin shaft, and the inner wall of the windproof groove (77) is provided with a verticality scale (79).

2. The device for measuring the verticality of a close-range object according to claim 1, wherein: A plurality of connecting plates (9) are fixedly mounted on the outer walls of both sides of the mounting seat (1), fixing bolts (10) are threadedly mounted on the connecting plates (9), and a bonding plate (11) is fixedly mounted on the side wall of the telescopic seat (6), and the bonding plate (11) is detachably connected to the bottom of the mounting seat (1) via bolts.

3. The device for measuring the verticality of a close-range object according to claim 1, wherein: A positioning plate (41) is fixedly mounted on one end of the mounting plate (4) away from the telescopic seat (6), and the horizontal length of the positioning plate (41) is equal to the distance from the end surface of the mounting plate (4) to the mounting seat (1).

4. The device for measuring the verticality of a close-range object according to claim 1, wherein: The support rod (8) includes a rotation groove (81) provided at the bottom of the outer wall of the mounting seat (1), one end of the rotating cylinder (82) is rotatably connected in the rotation groove (81), and the inner cavity of the other end of the rotating cylinder (82) is connected to the screw rod (83) through a threaded structure. The bottom of the mounting plate (4) is provided with a socket (84), and the top of the screw rod (83) matches the socket (84).

5. The device for measuring the verticality of a close-range object according to claim 1, wherein: The semi-bevel gear plate (52) is half of a large-diameter bevel gear, the axis of the semi-bevel gear plate (52) coincides with the axis of the pin connecting the rotating plate (3) and the fixed plate (2), and the diameter of the push-pull rod (57) is equal to the width of the spiral groove (56).

6. The device for measuring the verticality of a close-range object according to claim 1, wherein: A limiting groove (58) is formed on the inner wall of the receiving groove (54), and the length of the limiting groove (58) is smaller than the length of the receiving groove (54). A limiting block (59) is fixedly mounted on the outer wall of one end of the sliding cylinder (55) away from the telescopic seat (6), and the limiting block (59) is slidably engaged with the limiting groove (58).

7. The device for measuring the verticality of a close-range object according to claim 1, wherein: A pointer (73) is fixedly mounted on the bottom outer wall of the vertical shaft (72), a direction scale (74) is provided on the top edge of the fixed plate (71), a compass is fixedly mounted on the top of the vertical shaft (72), and a transparent plate is mounted on the vertical plate (76) outside the windproof groove (77).

8. The device for measuring the verticality of a close-range object according to claim 1, wherein: The plumb bob (78) includes a vertical rod (781), which is rotatably connected to the top of the inner wall of the windproof groove (77) through a pin shaft. A gravity head (782) with a conical structure is fixedly installed at the bottom of the vertical rod (781). A central cavity (783) is opened in the middle of the gravity head (782), and a gravity ball (784) is provided in the middle of the central cavity (783). A spring (785) is installed between the outer wall of the gravity ball (784) and the inner wall of the central cavity (783).

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