A civil benchmark leveling device

Abstract

The utility model discloses a kind of civil engineering datum plane leveling devices, it is related to civil engineering technical field;And the utility model includes bottom plate, the top of the bottom plate is equipped with fixed plate, the top of the fixed plate is equipped with mounting plate, the top surface of the mounting plate is installed with laser line projector, two-way screw rod is rotationally arranged in the fixed plate, the outer surface of the two-way screw rod is threadedly equipped with threaded block, the top surface of the threaded block is fixedly equipped with frame, roller is rotationally arranged in the frame, the number of the roller is two groups, by roller close on the inclined plane below inclined plate, when the distance between two rollers changes, the pitch angle of mounting plate around hinge point can be accurately controlled, operator observes level on mounting plate simultaneously level, so that laser line projected by laser line projector is horizontal reference line, and then it is more convenient when adjusting laser line projector, reduces adjustment time, and can be quickly deployed.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering technology, specifically to a civil engineering reference surface leveling device. Background Technology

[0002] In fields such as civil engineering, road construction, interior decoration, and equipment installation, establishing a precise horizontal or vertical reference surface is a fundamental and crucial step in ensuring the quality of subsequent construction.

[0003] However, laser leveling instruments are widely used in modern construction. These instruments emit laser beams to form visible reference lines or points, providing an intuitive and accurate benchmark for construction. However, during the leveling process, the laser leveling instrument needs to be roughly placed in the center of the survey area using a tripod or other supporting structure. Then, it needs to be precisely leveled by manually adjusting multiple leveling screws and using the instrument's built-in circular level or electronic sensor. This process requires a high level of operator skill, is time-consuming, and is difficult to deploy quickly. To address these issues, the inventors have proposed a civil engineering benchmark leveling device to solve these problems. Utility Model Content

[0004] To address the issue of time-consuming manual adjustment of multiple leveling screws during the leveling process of laser line projectors, this invention aims to provide a civil engineering reference surface leveling device.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a civil engineering reference surface leveling device, including a base plate, a fixing plate above the base plate, an mounting plate above the fixing plate, a laser line projector mounted on the top surface of the mounting plate, a bidirectional lead screw rotatably mounted inside the fixing plate, a threaded block threaded onto the outer surface of the bidirectional lead screw, a frame fixed on the top surface of the threaded block, rollers rotatably mounted inside the frame, two sets of rollers, a level fixed on the top surface of the mounting plate, and two sets of inclined plates fixed on the bottom surface of the mounting plate, with the rollers rolling on the bottom ends of the two sets of inclined plates respectively. Ear plates are symmetrically provided on the top surface of the fixing plate. A rotating seat is fixedly mounted on the bottom surface of the mounting plate. The rotating seat is rotatably mounted inside the ear plate. A fixed rod is fixedly mounted inside the ear plate. The rotating seat is rotatably mounted on the outer surface of the fixed rod. First, the device is placed in the designated position. The operator manually rotates the knob, which drives the rotating shaft and the second bevel gear to rotate. The second bevel gear drives the first bevel gear that meshes with it to rotate, thereby driving the threaded rod to rotate. The threaded rod engages with the threaded hole fixed in the extension rod. Since the sliding plate is stuck in the groove of the support rod, it prevents the extension rod from rotating. Therefore, when the threaded rod rotates, the extension rod will drive the entire upper fixed plate and mounting plate mechanism to make vertical lifting and lowering movements along the support rod, thereby making a large range of coarse height adjustments to the laser projector so that its beam is roughly aligned with the required reference height.

[0006] The operator manually rotates the double-acting screw, causing the two threaded blocks to move simultaneously towards or away from each other. The frame and rollers on the threaded blocks move accordingly. Since the rollers are in close contact with the inclined plane below the inclined plate, they roll on the inclined plane when the distance between the two rollers changes, thereby lifting or lowering one end of the inclined plate. The center of the mounting plate is a hinged fixed fulcrum rotating seat. Therefore, by controlling the position of the two rollers, the pitch angle of the mounting plate around the hinge point can be precisely controlled. The operator simultaneously observes the level on the mounting plate. When the level shows horizontal, it means that the mounting plate is in a precise horizontal state, and the laser line projected by the laser line projector on it is the horizontal reference line.

[0007] Preferably, a support rod is fixedly provided on the top surface of the base plate, and an extension rod is fixedly provided on the bottom surface of the fixed plate. The extension rod is slidably disposed within the support rod. A threaded rod is rotatably inserted into the support rod. The threaded rod is threadedly inserted into the extension rod. A first bevel gear is fixedly provided at the bottom end of the threaded rod. A rotating shaft is rotatably inserted into the support rod. A knob is fixedly provided on one side of the rotating shaft. A second bevel gear is fixedly provided at the end of the rotating shaft away from the knob. The first bevel gear and the second bevel gear mesh with each other. A sliding plate is fixedly provided on the outer surface of the extension rod. The sliding plate is slidably disposed within the support rod. A sliding groove is provided within the support rod. The sliding plate is slidably disposed within the sliding groove.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] 1. By having rollers closely attached to the inclined surface below the inclined plate, the pitch angle of the mounting plate around the hinge point can be precisely controlled when the distance between the two rollers changes. At the same time, the operator observes the level on the mounting plate to ensure that the laser line projected by the laser projector is the horizontal reference line. This makes it easier to adjust the laser projector, reduces adjustment time, and allows for rapid deployment.

[0010] 2. By extending the rod, the entire upper fixed plate and mounting plate mechanism are driven to move vertically up and down along the support rod, thereby making a large range of coarse height adjustments to the laser projector so that its beam is roughly aligned with the required reference height. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a partial cross-sectional view of the mounting plate of this utility model;

[0014] Figure 3 This is a schematic diagram of the fixing plate structure of this utility model;

[0015] Figure 4 This is a partial cross-sectional view of the support rod of this utility model.

[0016] In the diagram: 1. Base plate; 2. Fixing plate; 21. Two-way lead screw; 22. Threaded block; 23. Frame; 24. Roller; 3. Mounting plate; 31. Laser projector; 32. Level; 33. Ear plate; 34. Fixing rod; 35. Rotating seat; 36. Inclined plate; 4. Support rod; 401. Slide groove; 41. Extension rod; 42. Slide plate; 43. Threaded rod; 44. First bevel gear; 45. Rotating shaft; 46. Knob; 47. Second bevel gear. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example: Figure 1-4As shown, this utility model provides a civil engineering reference surface leveling device, including a base plate 1, a fixing plate 2 above the base plate 1, an mounting plate 3 above the fixing plate 2, a laser line projector 31 mounted on the top surface of the mounting plate 3, a bidirectional lead screw 21 rotatably mounted inside the fixing plate 2, a threaded block 22 threadedly fitted on the outer surface of the bidirectional lead screw 21, a frame 23 fixed on the top surface of the threaded block 22, and rollers 24 rotatably mounted inside the frame 23. Two sets of rollers 24 are provided. A water... The leveling instrument 32 has two sets of inclined plates 36 fixed on the bottom surface of the mounting plate 3. Two sets of rollers 24 roll on the bottom ends of the two sets of inclined plates 36 respectively. A lug 33 is symmetrically arranged on the top surface of the fixing plate 2. A rotating seat 35 is fixed on the bottom surface of the mounting plate 3, rotatably mounted inside the lug 33. A fixing rod 34 is fixed inside the lug 33, and the rotating seat 35 is rotatably mounted on the outer surface of the fixing rod 34. The laser projector 31 is mounted on the mounting plate 3, and the mounting plate 3 is connected by the rotating seat 35 and the fixing rod 34. The fixed rod 34 is hinged to the ear plate 33 on the fixed plate 2, forming a fulcrum, allowing the mounting plate 3 to tilt back and forth like a seesaw. Two inclined plates 36 are fixed to the bottom surface of the mounting plate 3. When the operator manually rotates the bidirectional lead screw 21, the two threaded blocks 22 move simultaneously towards or away from each other. The frame 23 and rollers 24 on the threaded blocks 22 move accordingly. Since the rollers 24 are in close contact with the inclined surface below the inclined plate 36, when the distance between the two rollers 24 changes, they roll on the inclined surface, thus lifting or lowering the inclined plate. At one end of plate 36, the center of mounting plate 3 is a hinged fixed fulcrum rotating seat 35. Therefore, by controlling the position of the two rollers 24, the pitch angle of mounting plate 3 around the hinge point can be precisely controlled. At the same time, the operator observes the level 32 mounted on mounting plate 3. When the level 32 shows horizontal, it means that mounting plate 3 is in a precise horizontal state. The laser line projected by the laser line projector 31 on it is the horizontal reference line, which makes it more convenient to adjust the laser line projector 31, reduces the adjustment time, and allows for rapid deployment.

[0019] A support rod 4 is fixedly provided on the top surface of the base plate 1, and an extension rod 41 is fixedly provided on the bottom surface of the fixed plate 2. The extension rod 41 is slidably provided in the support rod 4. A threaded rod 43 is rotatably inserted in the support rod 4. The threaded rod 43 is threadedly inserted in the extension rod 41. A first bevel gear 44 is fixedly provided at the bottom end of the threaded rod 43. A rotating shaft 45 is rotatably inserted in the support rod 4. A knob 46 is fixedly provided on one side of the rotating shaft 45. A second bevel gear 47 is fixedly provided at the end of the rotating shaft 45 away from the knob 46. The first bevel gear 44 and the second bevel gear 47 mesh. A sliding plate 42 is fixedly provided on the outer surface of the extension rod 41. The sliding plate 42 is slidably provided in the support rod 4. A sliding groove 401 is provided in the support rod 4. The sliding plate 42 is slidably provided in the sliding groove 401.

[0020] By adopting the above technical solution, the operator can manually rotate the knob 46 to drive the rotating shaft 45 and the second bevel gear 47 to rotate. The second bevel gear 47 drives the first bevel gear 44, which meshes with it, to rotate, thereby driving the threaded rod 43 to rotate. The threaded rod 43 cooperates with the threaded hole fixed in the extension rod 41. Since the slide plate 42 is stuck in the slide groove 401 of the support rod 4, it prevents the extension rod 41 from rotating. Therefore, when the threaded rod 43 rotates, the extension rod 41 will drive the entire upper fixed plate 2 and mounting plate 3 mechanism to make vertical lifting and lowering movements along the support rod 4, thereby making a large range of coarse height adjustment of the laser projector 31 so that its beam is roughly aligned with the required reference height.

[0021] Working principle: First, place the device in the designated position. The operator manually rotates the knob 46, which drives the rotating shaft 45 and the second bevel gear 47 to rotate. The second bevel gear 47 drives the first bevel gear 44, which meshes with it, to rotate, thereby driving the threaded rod 43 to rotate. The threaded rod 43 engages with the threaded hole fixed in the extension rod 41. Since the slide plate 42 is stuck in the groove 401 of the support rod 4, it prevents the extension rod 41 from rotating. Therefore, when the threaded rod 43 rotates, the extension rod 41 will drive the entire upper fixed plate 2 and mounting plate 3 mechanism to make vertical lifting and lowering movements along the support rod 4, thereby making a large range of coarse height adjustment of the laser projector 31 so that its beam is roughly aligned with the required reference height.

[0022] The operator manually rotates the bidirectional lead screw 21, causing the two threaded blocks 22 to move simultaneously towards or away from each other. The frame 23 and rollers 24 on the threaded blocks 22 move accordingly. Since the rollers 24 are in close contact with the inclined surface below the inclined plate 36, they will roll on the inclined surface when the distance between the two rollers 24 changes, thereby lifting or lowering one end of the inclined plate 36. The center of the mounting plate 3 is the hinged fixed fulcrum rotating seat 35. Therefore, by controlling the position of the two rollers 24, the pitch angle of the mounting plate 3 around the hinge point can be precisely controlled. At the same time, the operator observes the level 32 mounted on the mounting plate 3. When the level 32 shows horizontal, it means that the mounting plate 3 is in a precise horizontal state, and the laser line projected by the laser line projector 31 on it is the horizontal reference line.

[0023] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0024] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A civil engineering reference surface leveling device, comprising a base plate (1), characterized in that: A fixing plate (2) is provided above the base plate (1), and an mounting plate (3) is provided above the fixing plate (2). A laser line projector (31) is installed on the top surface of the mounting plate (3). A bidirectional lead screw (21) is rotatably provided inside the fixing plate (2). A threaded block (22) is threaded on the outer surface of the bidirectional lead screw (21). A frame (23) is fixed on the top surface of the threaded block (22). A roller (24) is rotatably provided inside the frame (23). There are two sets of rollers (24). A level (32) is fixed on the top surface of the mounting plate (3). An inclined plate (36) is fixed on the bottom surface of the mounting plate (3). There are two sets of inclined plates (36). The two sets of rollers (24) roll on the bottom ends of the two sets of inclined plates (36).

2. The civil engineering reference surface leveling device as described in claim 1, characterized in that, A lug plate (33) is symmetrically provided on the top surface of the fixed plate (2), and a rotating seat (35) is fixedly provided on the bottom surface of the mounting plate (3). The rotating seat (35) is rotatably disposed inside the lug plate (33).

3. The civil engineering reference surface leveling device as described in claim 2, characterized in that, A fixing rod (34) is fixedly provided inside the ear plate (33), and the rotating seat (35) is rotatably provided on the outer surface of the fixing rod (34).

4. The civil engineering reference surface leveling device as described in claim 1, characterized in that, A support rod (4) is fixedly provided on the top surface of the base plate (1), and an extension rod (41) is fixedly provided on the bottom surface of the fixed plate (2). The extension rod (41) is slidably provided inside the support rod (4).

5. A civil engineering reference surface leveling device as described in claim 4, characterized in that, A threaded rod (43) is rotatably inserted into the support rod (4), and the threaded rod (43) is threaded into the extension rod (41).

6. A civil engineering reference surface leveling device as described in claim 5, characterized in that, A first bevel gear (44) is fixedly provided at the bottom end of the threaded rod (43), a rotating shaft (45) is rotatably inserted inside the support rod (4), a knob (46) is fixedly provided on one side of the rotating shaft (45), and a second bevel gear (47) is fixedly provided at the end of the rotating shaft (45) away from the knob (46), and the first bevel gear (44) and the second bevel gear (47) mesh with each other.

7. A civil engineering reference surface leveling device as described in claim 6, characterized in that, A sliding plate (42) is fixedly provided on the outer surface of the extension rod (41), and the sliding plate (42) is slidably disposed inside the support rod (4).

8. A civil engineering reference surface leveling device as described in claim 7, characterized in that, A groove (401) is provided in the support rod (4), and the slide plate (42) is slidably disposed in the groove (401).

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