Level gauge for engineering surveying and use method thereof

Abstract

The invention discloses a level gauge for engineering surveying, which comprises: a horizontal unit, which comprises a tripod and a ball cavity sleeve fixedly connected to the top of the tripod, the inner cavity of the ball cavity sleeve is slidably provided with a ball head rod, the top of the tripod is provided with a conical opening, and the spherical surface of the ball head rod is fixedly connected with a T-shaped seat; the use method of the level gauge for engineering surveying is suitable for any one of the level gauges, and comprises the following steps: step 1, unfolding the tripod and erecting the tripod on the ground, and then inverting the fixed column to prevent the steel ball from being in contact with the pressure sensor. According to the leveling instrument, the balance weight rod and the ball head rod are used for enabling the leveling instrument body to be in the horizontal state, the ball head rod is clamped through the two clamping plates, and therefore the horizontal position of the leveling instrument body is fixed, the leveling instrument can be rapidly and preliminarily leveled, and the leveling and calibration time needed by the leveling instrument is greatly shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of levels, and in particular to a level for engineering measurement and a use method thereof. Background Art

[0002] A level is an instrument that establishes a horizontal line of sight to measure the height difference between two points on the ground. The principle is to measure the height difference between points on the ground according to the leveling principle. The main components include a telescope, a tube level (or compensator), a vertical axis, a base, and a foot screw. According to the structure, it can be divided into micro-tilt levels, automatic leveling levels, laser levels, and digital levels (also called electronic levels). According to the accuracy, it can be divided into precision levels and ordinary levels.

[0003] During the construction process, it is necessary to first place the level body on a tripod, and then use the adjusting screw (foot) to adjust the horizontal height of the level so that the bubble is in the center of the mark to achieve measurement. The roads at the construction site are usually uneven. Compared with flat ground, when coarsely adjusting the horizontal angle of the level, a larger angle adjustment is required to position the bubble in the center of the mark, which prolongs the adjustment period of the level and requires constant movement during frequent measurements, which requires workers to constantly adjust and calibrate, thereby increasing the workers' work intensity. Therefore, a level for engineering measurement and a method for using the same are proposed. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above-mentioned problems existing in the existing level instrument for engineering measurement and the use method thereof, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a level for engineering measurement and a method of using the same, which is suitable for solving the problem that the roads at construction sites are usually uneven and require larger angle adjustments to position the bubble at the center of the mark. During frequent measurements, the position needs to be constantly moved, which requires workers to constantly adjust and calibrate, thereby increasing the work intensity of the workers.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a level for engineering measurement, comprising:

[0008] A horizontal unit, comprising a tripod and a ball cavity sleeve fixedly connected to the top of the tripod, wherein a ball head rod is slidably arranged in the inner cavity of the ball cavity sleeve, a conical opening is provided on the top of the tripod, a T-shaped seat is fixedly connected to the spherical surface of the ball head rod, a level body is fixedly installed on the top of the T-shaped seat, a rectangular frame is fixedly connected to the bottom end of the ball head rod, and a counterweight rod is fixedly connected to the bottom of the rectangular frame;

[0009] A trigger unit comprises a hanging rope fixedly connected to the top of the inner wall of the rectangular frame, a hollow ball fixedly connected to the lower end of the hanging rope, a fixed column fixedly connected to the bottom of the spherical surface of the hollow ball, a limiting groove and three cylindrical grooves are arranged inside the fixing column, a steel ball is arranged in the limiting groove, a pressure sensor is fixedly connected to the bottom of the limiting groove, a floating block is arranged in each cylindrical groove, an inclined rod is fixedly connected to one side of each floating block, a connected inclined groove is arranged between the limiting groove and each cylindrical groove, each of the inclined rods is sealed and slid in the inclined groove, a plurality of filling pipes are fixedly connected to one side of the fixing column, each of the filling pipes is respectively connected to the corresponding cylindrical groove, and the trigger unit also comprises a clamping assembly for clamping the ball head rod.

[0010] As a preferred solution of the engineering measurement level described in the present invention, the clamping assembly includes a double-axis screw motor fixedly mounted on the top of a tripod, the two output ends of the double-axis screw motor are respectively threaded with L-shaped plates, the two L-shaped plates are slidably set on the top of the tripod, the opposite surfaces of the two L-shaped plates are fixedly connected with splints, and the side of the ball cavity sleeve is provided with two arc-shaped openings that fit the splints.

[0011] As a preferred solution of the engineering measurement level described in the present invention, the fixed column is made of transparent material, an annular groove is opened inside the fixed column, the annular groove is connected with three cylindrical grooves, and a scale ring is fixedly sleeved on the inner wall of each cylindrical groove.

[0012] As a preferred solution of a level for engineering surveying described in the present invention, the level also includes a reminder unit, wherein the reminder unit includes a buzzer fixedly sleeved on the outer wall of a hollow sphere, a connecting rope is fixedly connected to the top of the inner wall of the hollow sphere, a conductive disk is fixedly connected to the lower end of the connecting rope, two first contacts are fixedly connected to one side of the conductive disk, two second contacts are fixedly connected to the inner wall of the hollow sphere, and both of the second contacts pass through the inner wall of the hollow sphere and are electrically connected to the buzzer.

[0013] As a preferred solution of the engineering surveying level described in the present invention, two balance ropes are fixedly connected to the bottom of the conductive disk, and the lower ends of the two balance ropes are fixedly connected to counterweight balls.

[0014] As a preferred solution of the level for engineering surveying described in the present invention, the level also includes an auxiliary unit, wherein the auxiliary unit includes a fixed plate fixedly connected to one side of a tripod, one side of the fixed plate is rotatably connected to a rotating rod, the rod surface of the rotating rod is fixedly connected to a traction rope, and one end of the traction rope is fixedly connected to the outer wall of the rectangular frame.

[0015] As a preferred solution of the engineering surveying level described in the present invention, one end of the rotating rod passes through one side of the fixed plate and is provided with a circular hole, the top of the fixed plate is threadedly connected with a threaded rod, and the threaded rod vertically passes through the top of the fixed plate.

[0016] As a preferred solution of the engineering surveying level described in the present invention, a rubber ring is fixedly connected to the inner wall of the conical mouth of the tripod, and two arc pads are fixedly connected to the inner wall of the rectangular frame.

[0017] As a preferred solution of the engineering surveying level described in the present invention, the bottom of the fixed column is fixedly connected with a U-shaped ring, the bottom of the tripod is fixedly connected with a hook rope, and one end of the hook rope is fixedly connected with a hook.

[0018] A method for using a level for engineering measurement, the method for using the level being applicable to any of the above-mentioned levels, and the method for using the level comprising the following steps:

[0019] Step 1: unfold the tripod and set it on the ground, then invert the fixed column so that the steel ball does not contact the pressure sensor, and then rotate the rotating rod to pull the rectangular frame through the traction rope to deflect;

[0020] Step 2: Then loosen the fixed column and the rotating rod, so that the counterweight rod and the fixed column begin to swing naturally under the action of gravity. When the counterweight rod is in a static state, the level body is initially leveled;

[0021] Step 3: When the fixed column is in a stationary state, the liquid in the cylindrical groove no longer shakes, the floating block automatically drives the inclined rod to move downward, and the steel ball falls along the limit groove under the action of gravity and hits the pressure sensor;

[0022] Step 4: The pressure sensor then sends a signal to the double-axis screw motor, and then the output end of the double-axis screw motor starts to rotate, driving the two clamps to clamp and fix the ball head rod;

[0023] Step 5: While the clamp is clamping, the conductive disk stops shaking, and the two first contacts are in contact with the two second contacts at the same time, causing the buzzer to sound, reminding the worker that the initial leveling of the level body is completed.

[0024] The beneficial effects of the present invention are as follows: the counterweight rod and the ball head rod make the level body vertically downward and quickly become horizontal through natural gravity, and the steel ball hits the pressure sensor to send a signal to control the rotation of the dual-axis screw motor and cause the two clamps to clamp the ball head rod, thereby fixing the horizontal position of the level body. The level can be quickly and initially leveled, thereby greatly reducing the calibration time required for a single leveling of the level, making it suitable for the rough roads at construction sites and shortening the time consumed for multiple measurements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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 creative work. Among them:

[0026] Figure 1 This is a schematic diagram of the overall structure of the level instrument for engineering measurement proposed by the present invention;

[0027] Figure 2 This is a schematic diagram of a half-section structure of the ball cavity sleeve proposed by the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the clamping assembly proposed by the present invention;

[0029] Figure 4 This is a schematic diagram of the connection structure between the hanging rope and the hollow ball proposed by the present invention;

[0030] Figure 5 A schematic diagram of the internal structure of a half-section of a fixed column proposed by the present invention;

[0031] Figure 6 A schematic diagram of the connection relationship between the annular groove and the cylindrical groove proposed in the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the reminder unit proposed by the present invention;

[0033] Figure 8 This is a schematic diagram of the local structure of the auxiliary unit proposed in the present invention. Description of the drawings:

[0035] 100, horizontal unit; 101, tripod; 102, ball cavity sleeve; 103, ball head rod; 104, T-shaped seat; 105, level instrument body; 106, rectangular frame; 107, counterweight rod;

[0036] 200, trigger unit; 201, hanging rope; 202, hollow ball; 203, fixed column; 204, limit groove; 205, cylindrical groove; 206, steel ball; 207, pressure sensor; 208, floating block; 209, inclined rod; 210, filling pipe; 211, clamping assembly; 2111, double-axis screw motor; 2112, L-shaped plate; 2113, clamping plate; 212, scale ring;

[0037] 300, reminder unit; 301, buzzer; 302, connecting rope; 303, conductive disk; 304, first contact point; 305, second contact point; 306, balance rope; 307, weighted ball;

[0038] 400, auxiliary unit; 401, fixing plate; 402, rotating rod; 403, traction rope; 404, threaded rod; 405, rubber ring; 406, arc pad; 407, U-shaped ring; 408, hook rope; 409, hook. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0042] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0043] Embodiment 1

[0044] Reference Figure 1-Figure 8 , which is an embodiment of the present invention, provides a level for engineering measurement, including: a level unit 100, a trigger unit 200, a reminder unit 300 and an auxiliary unit 400;

[0045] The horizontal unit 100 includes a tripod 101 and a ball cavity sleeve 102 fixedly connected to the top of the tripod 101, a ball head rod 103 is slidably arranged in the inner cavity of the ball cavity sleeve 102, a conical opening is opened on the top of the tripod 101, a T-shaped seat 104 is fixedly connected to the spherical surface of the ball head rod 103, a level body 105 is fixedly installed on the top of the T-shaped seat 104, a rectangular frame 106 is fixedly connected to the bottom end of the ball head rod 103, and a counterweight rod 107 is fixedly connected to the bottom of the rectangular frame 106;

[0046] The trigger unit 200 includes a hanging rope 201 fixedly connected to the top of the inner wall of the rectangular frame 106, the lower end of the hanging rope 201 is fixedly connected to a hollow ball 202, the bottom of the spherical surface of the hollow ball 202 is fixedly connected to a fixing column 203, the interior of the fixing column 203 is provided with a limit groove 204 and three cylindrical grooves 205, the limit groove 204 is provided with a steel ball 206, the bottom of the limit groove 204 is fixedly connected to a pressure sensor 207, and each cylindrical groove 205 has a pressure sensor 207. A floating block 208 is provided, and a slanted rod 209 is fixedly connected to one side of each floating block 208. A connected slanted groove is opened between the limiting groove 204 and each cylindrical groove 205. Each slanted rod 209 is sealed and slides in the slanted groove. A plurality of filling pipes 210 are fixedly connected to one side of the fixed column 203, and each filling pipe 210 is respectively connected to the corresponding cylindrical groove 205. The trigger unit 200 also includes a clamping assembly 211 for clamping the ball head rod 103.

[0047] The clamping assembly 211 includes a double-axis screw motor 2111 fixedly mounted on the top of the tripod 101, and the two output ends of the double-axis screw motor 2111 are respectively threaded with L-shaped plates 2112, and the two L-shaped plates 2112 are both slidably set on the top of the tripod 101, and the opposite surfaces of the two L-shaped plates 2112 are fixedly connected with clamps 2113, and the side of the ball cavity sleeve 102 is provided with two arc-shaped openings that fit the clamps 2113.

[0048] The ball head rod 103 can deflect with a certain degree of freedom in the inner cavity of the ball cavity sleeve 102. The ball head rod 103 passes through the tapered opening of the tripod 101. The diameter of the tapered opening increases from top to bottom. The shape of the counterweight rod 107 is similar to that of the ball head rod 103. When the tripod 101 is placed on the ground, the weight of the counterweight rod 107 is heavier. Under the action of gravity, the counterweight rod 107 drives the ball head rod 103 to deflect through the rectangular frame 106, so that the ball head rod 103 drives the level body 105 to deflect through the T-shaped seat 104. When the counterweight rod 107 is static When the level meter 105 is in the stopped state, the counterweight rod 107 naturally droops due to gravity, and the upper surface of the T-shaped seat 104 is in a horizontal state, and the level meter body 105 is also in a horizontal state, so that the level meter body 105 can be quickly preliminarily leveled, and when facing a ground with a large inclination angle, the level meter body 105 can be quickly preliminarily leveled to reduce the time spent on rotating the adjustment screw to adjust the level meter body 105, and when the position is frequently moved for measurement, the counterweight rod 107 is used for automatic leveling, which greatly reduces the work intensity of the staff;

[0049] The weight of the hollow ball 202 is lower than that of the fixed column 203. The hanging rope 201 allows the fixed column 203 to naturally move vertically downward under the action of gravity. A limiting groove 204 is provided at the center of the fixed column 203. The limiting groove 204 is composed of a spherical groove and a rod-shaped groove connected to each other. The diameter of the rod-shaped groove is the same as the diameter of the steel ball 206. When the level body 105 is initially leveled, the fixed column 203 needs to be placed upside down so that the steel ball 206 is located in the spherical groove of the limiting groove 204. Then, the fixed column 203 is loosened so that the fixed column 203 and the counterweight rod 107 are deflected together. Liquid is provided inside the column groove 205, and the floating block 208 floats on the liquid, so that the inclined rod 209 passes through the inclined groove of the fixed column 203. During the deflection of the fixed column 203, the steel ball 206 keeps sliding in the spherical groove of the limiting groove 204, and it is difficult to fall into the rod-shaped groove of the limiting groove 204.

[0050] As the liquid in the cylindrical groove 205 continues to shake, the height of the floating block 208 is affected by the shaking of the liquid and is difficult to drop. A plurality of filling pipes 210 are fixedly connected to one side of the fixed column 203. A sealing cover is provided at the upper end of each filling pipe 210. The filling pipe 210 is used to add liquid to the cylindrical groove 205. The inclined rods 209 are sealed and slide in the inclined grooves, and the liquid will not flow into the limiting groove 204. At this time, the end of the inclined rod 209 close to the limiting groove 204 is located in the limiting groove 204 to prevent the steel ball 206 from accidentally falling into the rod-shaped groove of the limiting groove 204. In the process of synchronous swinging of the counterweight rod 107 and the fixed column 203, the initial inclination angle of the fixed column 203 is greater than the initial inclination angle of the counterweight rod 107, and the initial inclination angle of the fixed column 203 is greater than the initial inclination angle of the counterweight rod 107. The initial tilt angle cannot be too large to avoid hitting the rectangular frame 106. During the swinging of the counterweight rod 107, the counterweight rod 107 and the inner cavity of the ball cavity sleeve 102 rub against each other, so that the counterweight rod 107 will gradually become static before the fixed column 203, and the fixed column 203 will be static after the counterweight rod 107. When the counterweight rod 107 is close to the static state, the fixed column 203 swings slightly and drives the counterweight rod 107 to swing slightly. When the fixed column 203 gradually approaches the static state, the liquid in the cylindrical groove 205 gradually stabilizes, and then the floating block 208 floats down and pulls the inclined rod 209 to slide along the inclined groove. The end of the inclined rod 209 is no longer located in the limit groove 204, and the inclined rod 209 is still located in the inclined groove.

[0051] Then the steel ball 206 stops shaking and slides down into the rod-shaped groove of the limit groove 204 under the action of gravity. The steel ball 206 hits the pressure sensor 207 during the falling process. The pressure sensor 207 is a device that can sense the pressure signal and convert the pressure signal into a usable output electrical signal according to a certain rule. The technology of the pressure sensor 207 is very mature and its working principle is not described in detail. The pressure sensor 207 sends a signal to the double-axis screw motor 2111, and the double-axis screw motor 211 The two screw output ends of 1 are symmetrically designed. After the double-axis screw motor 2111 receives the signal, the two output ends of the double-axis screw motor 2111 rotate synchronously, so that the two L-shaped plates 2112 are close to each other, and then the two clamping plates 2113 synchronously pass through the two arc-shaped openings of the ball cavity sleeve 102 and clamp the ball head rod 103, thereby fixing the position of the ball head rod 103, thereby preventing the level body 105 from being deflected by being touched, and then the level body 105 can be finely adjusted and measured;

[0052] When the measuring location is changed and the level body 105 needs to be leveled again, the dual-axis screw motor 2111 rotates in the opposite direction so that the two clamps 2113 are no longer clamped on the ball head rod 103, and then the fixed column 203 is inverted to move the steel ball 206 into the spherical groove of the limit groove 204. Then, the fixed column 203 is loosened so that the fixed column 203 and the counterweight rod 107 are deflected together to perform preliminary leveling of the level body 105 again.

[0053] In addition, the fixing column 203 is made of a transparent material, and an annular groove is formed inside the fixing column 203 . The annular groove is connected to the three cylindrical grooves 205 , and a scale ring 212 is fixedly sleeved on the inner wall of each cylindrical groove 205 .

[0054] The fixed column 203 is made of transparent material to facilitate workers to observe the position of the steel ball 206, and also to facilitate workers to observe the height of the liquid in the cylindrical groove 205. The height of the liquid does not exceed the height of the scale ring 212. When adding liquid to the cylindrical groove 205, the scale ring 212 is used to facilitate workers to judge whether the liquid is added to the appropriate position. The three cylindrical grooves 205 are distributed equidistantly in a ring shape, and the annular groove is connected to the three cylindrical grooves 205. When adding liquid, the annular groove can make the liquid levels of the three cylindrical grooves 205 consistent, thereby ensuring the uniformity of the height of the three inclined rods 209, and when the fixed column 203 gradually becomes stationary, the liquid in the three cylindrical grooves 205 can be uniformly horizontal through the annular groove, so that the three floating blocks 208 can descend synchronously, and the three inclined rods 209 can also slide downward along the inclined groove synchronously, so as not to block the falling of the steel ball 206.

[0055] Furthermore, the level also includes a reminder unit 300, wherein the reminder unit 300 includes a buzzer 301 fixedly mounted on the outer wall of the hollow ball 202, a connecting rope 302 is fixedly connected to the top of the inner wall of the hollow ball 202, a conductive disk 303 is fixedly connected to the lower end of the connecting rope 302, two first contacts 304 are fixedly connected to one side of the conductive disk 303, and two second contacts 305 are fixedly connected to the inner wall of the hollow ball 202, and the two second contacts 305 both penetrate the inner wall of the hollow ball 202 and are electrically connected to the buzzer 301.

[0056] The conductive plate 303 is suspended at the center of the inner cavity of the hollow ball 202 by the connecting rope 302. When the counterweight rod 107 is swinging, the conductive plate 303 is subjected to the force and thus swings in the hollow ball 202. At this time, the two first contacts 304 on the side of the conductive plate 303 cannot contact with the two second contacts 305 at the same time due to the swing. When the counterweight rod 107 gradually becomes stationary, the conductive plate 303 also gradually becomes stationary. Subsequently, the two first contacts 304 contact with the two second contacts 305 respectively. At this time, the buzzer 301 is connected to the circuit, so that the buzzer 301 makes a sound to remind the worker that the level body 105 has been leveled.

[0057] When the tripod 101 or the level body 105 is accidentally hit, the horizontal state of the level body 105 is destroyed. At this time, the conductive disk 303 is shaken by the force, so that the two first contacts 304 cannot contact the two second contacts 305 at the same time. At this time, the buzzer 301 no longer makes a sound to remind the worker that the level body 105 may no longer be in a horizontal state due to the collision and needs to be leveled again, so as to ensure that the level body 105 can be measured in a horizontal state, thereby ensuring the accuracy of the measurement data.

[0058] Furthermore, the level also includes an auxiliary unit 400, wherein the auxiliary unit 400 includes a fixed plate 401 fixedly connected to one side of the tripod 101, one side of the fixed plate 401 is rotatably connected to a rotating rod 402, the rod surface of the rotating rod 402 is fixedly connected to a traction rope 403, one end of the traction rope 403 is fixedly connected to the outer wall of the rectangular frame 106, one end of the rotating rod 402 passes through one side of the fixed plate 401 and is provided with a circular hole, the top of the fixed plate 401 is threadedly connected to a threaded rod 404, and the threaded rod 404 vertically passes through the top of the fixed plate 401.

[0059] The traction rope 403 is relatively long. During the swinging of the counterweight rod 107, the traction rope 403 will not restrict the swinging of the counterweight rod 107. When the leveling instrument body 105 is initially leveled, the rotating rod 402 is rotated to make the traction rope 403 wound around the rotating rod 402. When the traction rope 403 is in a taut state, the traction rope 403 pulls the rectangular frame 106 to make the counterweight rod 107 tilted. Then, the rotating rod 402 is released to make the counterweight rod 107 start to swing under the action of gravity. The rectangular frame 106 pulls the traction rope 403 through the swinging of the counterweight rod 107, so that the rotating rod 402 is forced to rotate and the traction rope 403 is no longer wound around the rotating rod 402, so that the rectangular frame 106 is no longer restricted by the traction rope 403, thereby being able to use the counterweight rod 107 to swing naturally.

[0060] By utilizing the rotating rod 402 and the traction rope 403, the starting angle of the deflection of the counterweight rod 107 is limited, thereby avoiding the hidden danger of manual deflection of the counterweight rod 107, which causes the counterweight rod 107 to swing too much and cause collision. The counterweight rod 107 is swung by its own gravity, so that the swing of the counterweight rod 107 will not exceed the starting position of the deflection of the counterweight rod 107 itself, to ensure that the counterweight rod 107 will not collide with other parts. When the traction rope 403 is wound around the rotating rod 402, the end of the threaded rod 404 is inserted into the circular hole of the rotating rod 402 by rotating the threaded rod 404, so that the rotating rod 402 is locked and will not rotate, thereby providing workers with time for adjustment. When the counterweight rod 107 is not in use, the traction rope 403 can be stored through the rotating rod 402 to avoid the traction rope 403 being wound around other parts such as the counterweight rod 107.

[0061] Furthermore, a rubber ring 405 is fixedly connected to the inner wall of the tapered mouth of the tripod 101, two arc pads 406 are fixedly connected to the inner wall of the rectangular frame 106, a U-shaped ring 407 is fixedly connected to the bottom of the fixed column 203, a hook rope 408 is fixedly connected to the bottom of the tripod 101, and a hook 409 is fixedly connected to one end of the hook rope 408.

[0062] When the ball head rod 103 swings with a certain degree of freedom in the conical opening of the tripod 101, the rubber ring 405 can protect the ball head rod 103 to prevent the ball head rod 103 from colliding with the conical opening. The two arc pads 406 are located at the same height as the buzzer 301. During the swinging process of the fixed column 203, the arc pads 406 can protect the buzzer 301, thereby preventing the buzzer 301, the fixed column 203 and the hollow ball 202 from colliding with the inner wall of the rectangular frame 106.

[0063] A U-shaped ring 407 is fixedly connected to the bottom of the fixed column 203. The fixed column 203 is made to be inverted by deflecting the fixed column 203, so that the hook 409 can be passed through the U-shaped ring 407 and the fixed column 203 can be hung, thereby maintaining the fixed column 203 in an inverted posture, and the steel ball 206 is always located in the spherical groove of the limit groove 204. When the level body 105 needs to be leveled, the hook 409 is removed from the U-shaped ring 407, and the fixed column 203 is made to swing.

[0064] A method for using a level for engineering measurement, the method for using the level is applicable to any of the above-mentioned levels, and the method for using the level includes the following steps:

[0065] Step 1: unfold the tripod 101 and set it on the ground, then invert the fixing column 203 so that the steel ball 206 does not contact the pressure sensor 207, and then rotate the rotating rod 402 to pull the rectangular frame 106 through the traction rope 403 to deflect;

[0066] Step 2: Then loosen the fixed column 203 and the rotating rod 402, so that the counterweight rod 107 and the fixed column 203 begin to swing naturally under the action of gravity. When the counterweight rod 107 is in a static state, the level body 105 is initially leveled;

[0067] Step 3: When the fixed column 203 is in a stationary state, the liquid in the cylindrical groove 205 no longer shakes, the floating block 208 automatically drives the inclined rod 209 to move downward, and the steel ball 206 falls along the limit groove 204 under the action of gravity and hits the pressure sensor 207;

[0068] Step 4: The pressure sensor 207 then sends a signal to the double-axis screw motor 2111, and then the output end of the double-axis screw motor 2111 starts to rotate, and drives the two clamping plates 2113 to clamp and fix the ball head rod 103;

[0069] Step 5: While the clamping plate 2113 is clamping, the conductive disk 303 no longer shakes, and the two first contacts 304 are in contact with the two second contacts 305 at the same time, so that the buzzer 301 sounds to remind the worker that the initial leveling of the level body 105 is completed.

[0070] Embodiment 2

[0071] Reference Figure 7 , which is different from the first embodiment in that: two balancing ropes 306 are fixedly connected to the bottom of the conductive plate 303 , and the lower ends of the two balancing ropes 306 are fixedly connected to a weight ball 307 .

[0072] When the level body 105 is in a horizontal state, the two first contacts 304 are in contact with the two second contacts 305 respectively. When the tripod 101 or the level body 105 is accidentally touched, the worker may hardly feel it, but the balance of the hollow ball 202 is broken by the impact force, causing the conductive disk 303 to swing inside the hollow ball 202. The two balance ropes 306 and the two counterweight balls 307 can increase the swing amplitude of the conductive disk 303, so that the two first contacts 304 are no longer in contact with the two second contacts 305 at the same time, and the buzzer 301 no longer sounds, to remind the worker that when the level body 105 is shaken, the horizontal state of the level body 105 is broken and it needs to be leveled again to ensure the accuracy of the measurement data.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A level for engineering measurement, characterized in that: include: A leveling unit (100) comprises a tripod (101) and a ball cavity sleeve (102) fixedly connected to the top of the tripod (101); a ball head rod (103) is slidably arranged in the inner cavity of the ball cavity sleeve (102); a conical opening is provided at the top of the tripod (101); a spherical surface of the ball head rod (103) is fixedly connected to a T-shaped seat (104); a leveling instrument body (105) is fixedly installed on the top of the T-shaped seat (104); a rectangular frame (106) is fixedly connected to the bottom end of the ball head rod (103); and a counterweight rod (107) is fixedly connected to the bottom of the rectangular frame (106); The trigger unit (200) comprises a hanging rope (201) fixedly connected to the top of the inner wall of a rectangular frame (106); the lower end of the hanging rope (201) is fixedly connected to a hollow ball (202); the bottom of the spherical surface of the hollow ball (202) is fixedly connected to a fixing column (203); a limiting groove (204) and three columnar grooves (205) are provided inside the fixing column (203); a steel ball (206) is arranged in the limiting groove (204); a pressure sensor (207) is fixedly connected to the bottom of the limiting groove (204); each columnar groove (205) has a pressure sensor (207) and a pressure sensor (207) is fixedly connected to the bottom of the limiting groove (204); and each columnar groove (205) has a pressure sensor (207) and a pressure sensor (207) is fixedly connected to the bottom of the limiting groove (204). ) are provided with a floating block (208), one side of each of the floating blocks (208) is fixedly connected to an inclined rod (209), a connected inclined groove is provided between the limiting groove (204) and each of the cylindrical grooves (205), each of the inclined rods (209) is sealed and slides in the inclined groove, one side of the fixed column (203) is fixedly connected to a plurality of filling pipes (210), each of the filling pipes (210) is respectively connected to a corresponding cylindrical groove (205), and the trigger unit (200) further includes a clamping assembly (211) for clamping the ball head rod (103).

2. A level for engineering surveying according to claim 1, characterized in that: The clamping assembly (211) comprises a double-axis screw motor (2111) fixedly mounted on the top of the tripod (101); two output ends of the double-axis screw motor (2111) are respectively threadedly sleeved with L-shaped plates (2112); two L-shaped plates (2112) are slidably arranged on the top of the tripod (101); opposite surfaces of the two L-shaped plates (2112) are fixedly connected with clamping plates (2113); and two arc-shaped openings that fit the clamping plates (2113) are provided on the side of the ball cavity sleeve (102).

3. The engineering surveying level according to claim 1, characterized in that: The fixing column (203) is made of a transparent material. An annular groove is provided inside the fixing column (203). The annular groove is connected to three cylindrical grooves (205). A scale ring (212) is fixedly sleeved on the inner wall of each cylindrical groove (205).

4. The engineering surveying level according to claim 1, characterized in that: The level also includes a reminder unit (300), wherein the reminder unit (300) includes a buzzer (301) fixedly sleeved on the outer wall of the hollow ball (202), a connecting rope (302) fixedly connected to the top of the inner wall of the hollow ball (202), a conductive disk (303) fixedly connected to the lower end of the connecting rope (302), two first contacts (304) fixedly connected to one side of the conductive disk (303), and two second contacts (305) fixedly connected to the inner wall of the hollow ball (202), and both of the two second contacts (305) penetrate the inner wall of the hollow ball (202) and are electrically connected to the buzzer (301).

5. The engineering surveying level according to claim 4, characterized in that: Two balance ropes (306) are fixedly connected to the bottom of the conductive plate (303), and the lower ends of the two balance ropes (306) are fixedly connected to a weighted ball (307).

6. The engineering surveying level according to claim 1, characterized in that: The level instrument further comprises an auxiliary unit (400), wherein the auxiliary unit (400) comprises a fixing plate (401) fixedly connected to one side of the tripod (101), one side of the fixing plate (401) is rotatably connected to a rotating rod (402), a rod surface of the rotating rod (402) is fixedly connected to a traction rope (403), and one end of the traction rope (403) is fixedly connected to the outer wall of the rectangular frame (106).

7. The engineering surveying level according to claim 6, characterized in that: One end of the rotating rod (402) passes through one side of the fixing plate (401) and is provided with a circular hole. The top of the fixing plate (401) is threadedly connected with a threaded rod (404), and the threaded rod (404) vertically passes through the top of the fixing plate (401).

8. The engineering surveying level according to claim 6, characterized in that: A rubber ring (405) is fixedly connected to the inner wall of the tapered opening of the tripod (101), and two arc-shaped pads (406) are fixedly connected to the inner wall of the rectangular frame (106).

9. The engineering surveying level according to claim 6, characterized in that: The bottom of the fixing column (203) is fixedly connected to a U-shaped ring (407), the bottom of the tripod (101) is fixedly connected to a hook rope (408), and one end of the hook rope (408) is fixedly connected to a hook (409).

10. A method for using a level for engineering measurement, the method for using the level being applicable to any one of the levels in claims 1 to 9 above, characterized in that: The method for using the level instrument comprises the following steps: Step 1: unfold the tripod (101) and set it on the ground, then invert the fixing column (203) so that the steel ball (206) does not contact the pressure sensor (207), and then rotate the rotating rod (402) to pull the rectangular frame (106) through the traction rope (403) to deflect; Step 2: Then loosen the fixed column (203) and the rotating rod (402), so that the counterweight rod (107) and the fixed column (203) begin to swing naturally under the action of gravity. When the counterweight rod (107) is in a static state, the level instrument body (105) is initially leveled. Step 3: When the fixed column (203) is in a stationary state, the liquid in the cylindrical groove (205) no longer shakes, the floating block (208) automatically drives the inclined rod (209) to move downward, and the steel ball (206) falls along the limit groove (204) under the action of gravity and hits the pressure sensor (207); Step 4: The pressure sensor (207) then sends a signal to the double-axis screw motor (2111), and then the output end of the double-axis screw motor (2111) starts to rotate, and drives the two clamping plates (2113) to clamp and fix the ball head rod (103); Step 5: While the clamping plate (2113) is clamping, the conductive disk (303) no longer shakes, and the two first contacts (304) are in contact with the two second contacts (305) at the same time, so that the buzzer (301) sounds to remind the worker that the initial leveling of the level instrument body (105) is completed.

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