Anti-deviation tower ruler for surveying and mapping land resources

Abstract

The utility model discloses an anti-deviation box staff for surveying and mapping land resources, relates to the technical field of box staff, and solves the problem that an existing box staff cannot be quickly clamped and fixed after being stretched. Comprising a telemeter rod body, the telemeter rod body is of a multi-layer structure design, the surfaces of the left side and the right side of the telemeter rod body are of penetrating structures, a limiting rod is fixedly connected to the inner wall of the telemeter rod body, and a water level is fixedly connected to the upper surface of the tail end of the telemeter rod body; the telemeter rod comprises a telemeter rod body, and further comprises a connecting shaft and a pressing plate, the connecting shaft is rotationally arranged on the inner wall of the telemeter rod body, the inner wall of the telemeter rod body is concave, and balls are rotationally arranged on the inner wall of the telemeter rod body; the pressing plate is fixedly connected to the surface of the connecting shaft. When the box staff body needs to be pulled, the box staff body can be directly pulled, measurement operation can be completed, when the box staff body is pulled, operation of workers is smoother through the balls, and the overall working efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tower rulers, in particular to a tower ruler for land resource surveying and mapping to prevent deviation. Background Art

[0002] The tower ruler is widely used in topographic survey of land resources. The tower ruler with a pin is disclosed in CN102445121A. There are telescopic buckles between the sections of the tower ruler. A folding pin is arranged outside the telescopic buckle. One end of the pin is riveted to the buckle with a rivet, and the other end is connected to the buckle through a magnet. When the second and third sections of the tower ruler are pulled out, the telescopic buckle pops out automatically, and the folding pin attached to the buckle is opened to buckle the next section of the tower ruler. In this way, even if the buckle is loose, the previous section of the tower ruler will not slide down due to the action of the pin. A new type of tower ruler with the publication number of CN201307007Y comprises a ruler body with multiple sections that can be pulled out from each other, a positioning pin is provided at the joint of the ruler body, a scale bar is provided on the ruler body, a power supply is provided outside the lower end of the ruler body, a diode light bar is provided between the ruler body and the scale bar, a conductive contact is provided inside the diode light bar at the joint of each section of the ruler body, the conductive contact is connected to the power supply through a wire, a level bubble is provided on the upper part of the outermost section of the ruler body, and a switch and a brightness adjustment button are provided on the power supply. The utility model has a simple structure, and can be reminded by the level bubble when the tower ruler is tilted, and at the same time, the reading of the tower ruler scale is completely unaffected by light, which provides great convenience for leveling measurement at night and in tunnels, thereby reducing the degree of dependence on light when reading the tower ruler scale for elevation measurement, expanding the scope of use of the tower ruler, and improving the accuracy of reading the elevation scale by a level or theodolite. After the tower ruler of the above structure is stretched, the sections of the tower ruler cannot be quickly engaged, and the sections of the tower ruler are prone to sliding, which leads to low stability and even affects the accuracy of the measurement result. Utility Model Content

[0003] The utility model aims to provide a deviation-proof tower ruler for land resource surveying and mapping, so as to solve the problem that the tower ruler in the prior art cannot be quickly engaged after being stretched.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a deviation-proof tower ruler for land resource surveying, comprising a tower ruler body, the tower ruler body is of a multi-layer structure design, and the surfaces on the left and right sides of the tower ruler body are both through structures, a limit rod is fixedly connected to the inner wall of the tower ruler body, and a level is fixedly connected to the upper surface of the end of the tower ruler body; it also includes a connecting shaft and a pressure plate, the connecting shaft is rotatably arranged on the inner wall of the tower ruler body, and the inner wall of the tower ruler body is concave, and a ball is rotatably arranged on the inner wall of the tower ruler body; the pressure plate is fixedly connected to the surface of the connecting shaft.

[0005] Preferably, the other side of the limiting rod is suspended, and the surface of the limiting rod is initially in contact with the surface of the pressing plate.

[0006] Preferably, a sliding plate is sleeved and connected to the surface of the limit rod, and the limit rod is symmetrically distributed about the center of the sliding plate, and a push plate is fixedly connected to the surface of the sliding plate, and the push plate is located outside the tower ruler body.

[0007] Preferably, the pressure plate is initially in a state of being inclined toward the inside of the tower ruler body, and the pressure plate is made of rubber.

[0008] Preferably, a second magnet is fixedly connected to the inner wall of the sliding plate, a first magnet is inlaid and connected to the surface of the limiting rod, and the magnetic poles of the first magnet and the second magnet at adjacent positions are opposite.

[0009] Preferably, the pressure plates are symmetrically distributed about the center of the tower ruler body.

[0010] Preferably, a torsion spring having an elastic reset function is fixedly connected to the surface of the connecting shaft, and the other side of the torsion spring is fixedly connected to the inner wall of the tower ruler body.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) During use, when the ruler body needs to be pulled out, the ruler body can be directly pulled to complete the measurement operation. When the ruler body is pulled out, the ball bearing makes the operation smoother and improves the overall work efficiency of the device. Furthermore, when the ruler body is not pulled out, the adjacent ruler bodies remain stable through their own friction.

[0013] (2) After pulling the ruler body, when the adjacent ruler body needs to be fixed, the push plate is pushed so that the push plate drives the sliding plate to slide on the surface of the limit rod. When the sliding plate moves to contact the pressure plate, the pressure plate is pushed and rotates inside the ruler body. Finally, the sliding plate stays stably on the limit rod under the action of the mutual magnetic force between the first magnet and the second magnet, that is, the sliding plate is in a state of pushing the pressure plate, so that the ruler body pressure plate always presses the adjacent ruler body, increasing the friction between the adjacent ruler bodies, that is, increasing the stability of the adjacent ruler bodies during operation, and having an anti-deviation effect; further, the pressure plate is symmetrically distributed about the center of the ruler body, which optimizes the stability of the pressure plate extrusion, that is, optimizes the anti-deviation effect; further, when driving the connecting shaft to rotate, the connecting shaft will stretch the torsion spring, and then when the operator pushes the push plate back, the sliding plate also returns to its original position. At this time, the pressure plate loses the pressure of the sliding plate. At this time, the connecting shaft and the pressure plate return to their original positions under the action of the torsion spring, and then the operator can stretch or press the ruler body again, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the tower ruler body of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the tower ruler body and the push plate of the utility model;

[0016] Figure 3 This is a schematic diagram of the connection structure between the limit rod and the sliding plate of the utility model;

[0017] Figure 4 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0018] Figure 5 This is a schematic diagram of the connection structure between the tower ruler body and the pressure plate of the utility model;

[0019] Figure 6 This is a schematic diagram of the cross-sectional structure of the sliding plate of the utility model;

[0020] Figure 7 It is a schematic diagram of the connection structure between the tower ruler body and the torsion spring of the utility model.

[0021] In the figure: 1. ruler body; 2. limit rod; 3. sliding plate; 4. push plate; 5. pressure plate; 6. first magnet; 7. second magnet; 8. connecting shaft; 9. torsion spring; 10. ball bearing; 11. leveler. DETAILED DESCRIPTION

[0022] like Figures 1 to 7 As shown, the utility model provides the following technical solutions:

[0023] Embodiment 1: By setting the ball 10, it is convenient for the operator to use the tower ruler body 1. The scale on the surface of the tower ruler body 1 is an existing conventional structure, so it is not described in detail in this application. Figure 1-Figure 3 The anti-bias land resource surveying and mapping tower ruler shown in the figure includes a tower ruler body 1, which is a multi-layer structure design, and the surfaces on both sides of the tower ruler body 1 are through structures, and a limit rod 2 is fixedly connected to the inner wall of the tower ruler body 1, and a leveler 11 is fixedly connected to the upper surface of the end of the tower ruler body 1. It also includes a connecting shaft 8, which is rotatably set on the inner wall of the tower ruler body 1, and the inner wall of the tower ruler body 1 is concave, and a ball 10 is rotatably set on the inner wall of the tower ruler body 1.

[0024] During use, when it is necessary to pull out the ruler body 1, the ruler body 1 can be directly pulled to complete the measurement operation. When pulling out the ruler body 1, the ball 10 makes the staff's operation smoother and improves the overall work efficiency of the device. When the ruler body 1 is not pulled, the adjacent ruler bodies 1 remain stable through their own friction.

[0025] Embodiment 2: Different from Embodiment 1, a pressure plate 5 is provided to make the tower ruler body 1 bear against the adjacent tower ruler body 1, so that the tower ruler body 1 remains stable. Figure 4-Figure 6 As shown: it also includes a pressing plate 5, which is fixedly connected to the surface of the connecting shaft 8, and the other side of the limit rod 2 is suspended, and the surface of the limit rod 2 is initially in contact with the surface of the pressing plate 5. The surface of the limit rod 2 is sleeved and connected with a sliding plate 3, and the limit rod 2 is symmetrically distributed about the center of the sliding plate 3, and the surface of the sliding plate 3 is fixedly connected with a push plate 4, and the push plate 4 is located outside the tower ruler body 1. The pressing plate 5 is initially in a state of being tilted toward the inside of the tower ruler body 1, and the pressing plate 5 is made of rubber, and a second magnet 7 is fixedly connected to the inner wall of the sliding plate 3, and a first magnet 6 is embedded and connected to the surface of the limit rod 2, and the magnetic poles of the first magnet 6 and the second magnet 7 at adjacent positions are opposite.

[0026] After pulling the scale body 1, when the adjacent scale body 1 needs to be fixed, push the push plate 4 so that the push plate 4 drives the sliding plate 3 to slide on the surface of the limit rod 2. When the sliding plate 3 moves to contact the pressure plate 5, the pressure plate 5 is pushed and rotated into the scale body 1, so that the scale body 1 is against the outer surface of the adjacent scale body 1. At this time, the sliding plate 3 stays stably on the limit rod 2 under the action of the mutual magnetic force between the first magnet 6 and the second magnet 7, that is, the sliding plate 3 is in a state of pushing the pressure plate 5, so that the pressure plate 5 of the scale body 1 always presses the adjacent scale body 1, thereby increasing the friction between the adjacent scale bodies 1, that is, increasing the stability between the adjacent scale bodies 1 during operation, and having an anti-deviation effect.

[0027] Embodiment 3: Different from Embodiment 2, a torsion spring 9 is provided to make the pressure plate 5 rebound quickly, so that the staff can operate again (stretch or store the tape measure body 1 again). Figure 7 As shown: the pressing plate 5 is symmetrically distributed about the center of the ruler body 1, and the surface of the connecting shaft 8 is fixedly connected with a torsion spring 9 that plays an elastic reset role, and the other side of the torsion spring 9 is fixedly connected to the inner wall of the ruler body 1. The pressing plate 5 is symmetrically distributed about the center of the ruler body 1, which optimizes the stability of the pressing plate 5 extrusion, that is, optimizes the anti-deviation effect. When driving the connecting shaft 8 to rotate, the connecting shaft 8 will stretch the torsion spring 9, and then when the operator pushes the push plate 4 back, the sliding plate 3 also returns to its original position. At this time, the pressing plate 5 loses the pressure of the sliding plate 3. At this time, the connecting shaft 8 and the pressing plate 5 return to their original positions under the action of the torsion spring 9, and then the operator can stretch (adjust the length) or press the ruler body 1 again, which is convenient for use.

[0028] During use, when it is necessary to pull out the ruler body, just pull the ruler body directly to complete the measurement operation. When pulling out the ruler body, the ball bearing makes the staff's operation smoother and improves the overall work efficiency of the device. When the ruler body is not pulled, the adjacent ruler bodies remain stable through their own friction. After pulling the ruler body, when the adjacent ruler bodies need to be fixed, push the push plate so that the push plate drives the sliding plate to slide on the surface of the limit rod. When the sliding plate moves to contact the pressure plate, the pressure plate is pushed and rotates inside the ruler body. Finally, the sliding plate stays stably on the limit rod under the mutual magnetic force between the first magnet and the second magnet, that is, the sliding plate is in a state of pushing the pressure plate, so that the ruler body pressure plate always presses the adjacent ruler body, increasing the friction between the adjacent ruler bodies, that is, increasing the stability of the adjacent ruler bodies during work, and having the effect of preventing deviation; the pressure plate is symmetrically distributed about the center of the ruler body, which optimizes the stability of the pressure plate extrusion, that is, optimizes the effect of preventing deviation. When the connecting shaft is driven to rotate, the connecting shaft will stretch the torsion spring, and then when the operator pushes the push plate back, the sliding plate also returns to its original position. At this time, the pressure plate loses the pressure of the sliding plate. At this time, the connecting shaft and the pressure plate return to their original positions under the action of the torsion spring, and then the operator can stretch or press the tower ruler body again for easy use.

Claims

1. A deviation-proof land resource surveying and mapping tower ruler, comprising a tower ruler body (1), wherein the tower ruler body (1) is designed as a multi-layer structure, the surfaces on both sides of the tower ruler body (1) are through structures, a limit rod (2) is fixedly connected to the inner wall of the tower ruler body (1), and a level (11) is fixedly connected to the upper surface of the end of the tower ruler body (1); characterized in that: It also includes a connecting shaft (8) and a pressure plate (5), wherein the connecting shaft (8) is rotatably arranged on the inner wall of the tower ruler body (1), the inner wall of the tower ruler body (1) is concave, and a ball (10) is rotatably arranged on the inner wall of the tower ruler body (1); and the pressure plate (5) is fixedly connected to the surface of the connecting shaft (8).

2. The anti-bias tower ruler for land resource surveying and mapping according to claim 1, characterized in that: The other side of the limiting rod (2) is suspended, and the surface of the limiting rod (2) is initially in contact with the surface of the pressing plate (5).

3. The anti-bias tower ruler for land resource surveying and mapping according to claim 1, characterized in that: The surface of the limit rod (2) is sleeved and connected with a sliding plate (3), the limit rod (2) is symmetrically distributed about the center of the sliding plate (3), the surface of the sliding plate (3) is fixedly connected with a push plate (4), and the push plate (4) is located outside the tower ruler body (1).

4. The anti-bias tower ruler for land resource surveying and mapping according to claim 1, characterized in that: The pressing plate (5) is initially in a state of being inclined toward the inside of the tower ruler body (1), and the pressing plate (5) is made of rubber.

5. The anti-bias tower ruler for land resource surveying and mapping according to claim 3, characterized in that: A second magnet (7) is fixedly connected to the inner wall of the sliding plate (3), and a first magnet (6) is inlaid on the surface of the limiting rod (2), wherein the magnetic poles of the first magnet (6) and the second magnet (7) at adjacent positions are opposite.

6. The anti-bias tower ruler for land resource surveying and mapping according to claim 1, characterized in that: The pressure plates (5) are symmetrically distributed about the center of the tower ruler body (1).

7. The anti-bias tower ruler for land resource surveying and mapping according to claim 1, characterized in that: A torsion spring (9) having an elastic reset function is fixedly connected to the surface of the connecting shaft (8), and the other side of the torsion spring (9) is fixedly connected to the inner wall of the tower ruler body (1).

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