Foldable surveying and mapping tripod

Abstract

The utility model discloses a foldable surveying and mapping tripod which comprises a fixed table, a first supporting leg is rotatably connected to the bottom of the fixed table, a second supporting leg is rotatably connected to one end, away from the fixed table, of the exterior of the first supporting leg, and a third supporting leg is slidably connected to the interior of the first supporting leg. According to the foldable surveying and mapping tripod, the second supporting leg and the fourth supporting leg are unfolded until the limiting insertion rod is clamped with the limiting insertion groove, at the moment, the third supporting leg and the fourth supporting leg can be pulled to stretch out of the first supporting leg and the second supporting leg, finally, the positioning bolt is tightened, and directional operation is conducted after use is finished; the third supporting leg and the fourth supporting leg are pushed back into the first supporting leg and the second supporting leg, so that the rotating shafts of the third supporting leg and the fourth supporting leg and the rotating shafts of the first supporting leg and the second supporting leg can coincide on the same axis, at the moment, the second supporting leg and the fourth supporting leg can be directly folded, the overall length is further reduced, and carrying is more facilitated. And the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of surveying tripod technology, and more specifically, to a foldable surveying tripod. Background Technology

[0002] A tripod is an essential measuring support for surveying in construction and other engineering projects. Tripods are characterized by high stability and are often used to fix the tripod during total station measurements.

[0003] Most existing surveying tripods have legs that consist of two sections that can be extended or retracted. This allows for adjusting the overall height of the fixed platform and shortening the overall length for easy carrying. However, since the legs can only be retracted once, they are still relatively long even when retracted, making them somewhat inconvenient to carry. Therefore, we provide a foldable surveying tripod. Utility Model Content

[0004] The purpose of this invention is to provide a foldable surveying tripod to solve the problems mentioned in the background section.

[0005] Most existing surveying tripods have legs that consist of two sections that can be extended or retracted. This allows for adjusting the overall height of the platform and shortening the overall length for easier carrying. However, since the legs can only be extended once, they are still relatively long even when retracted, making them somewhat inconvenient to carry.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A foldable surveying tripod includes a fixed platform, a first leg rotatably connected to the bottom of the fixed platform, a second leg rotatably connected to the outer end of the first leg away from the fixed platform, a third leg slidably connected inside the first leg, and a fourth leg slidably connected inside the second leg. The fourth leg is rotatably connected to the third leg. A positioning bolt is threaded inside the second leg. Grooves are provided inside the third and fourth legs, and the grooves cooperate with the positioning bolts.

[0008] Preferably, there are three first legs, and the three first legs are symmetrically distributed.

[0009] Preferably, the first and second legs each have a limiting groove inside, and a limiting plate is slidably connected inside the limiting groove. One of the limiting plates is fixedly connected to the third leg, and the other limiting plate is fixedly connected to the fourth leg.

[0010] Preferably, the outer wall of the limiting plate is fitted with the inner wall of the limiting groove.

[0011] Preferably, the second and fourth legs are provided with sliding grooves inside, and a limiting rod is slidably connected inside the sliding groove. A spring is fixedly connected between the limiting rod and the sliding groove. The first and third legs are provided with limiting slots inside, and the limiting slots are used in conjunction with the limiting rods.

[0012] Preferably, there are two slides, and the two slides are symmetrically distributed.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] Unfold the second and fourth legs until the limiting rod engages with the limiting slot. At this point, pull the third and fourth legs to extend them from the first and second legs. Finally, tighten the positioning bolts. After use, reverse the direction to push the third and fourth legs back into the first and second legs, so that the pivots of the third and fourth legs coincide with the pivots of the first and second legs on the same axis. At this point, the second and fourth legs can be folded directly to further reduce the overall length, making it more portable and convenient to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention when fully unfolded.

[0016] Figure 2 This is a schematic diagram of the overall preliminary structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of this utility model when folded.

[0018] Figure 4 This is a cross-sectional schematic diagram of the second leg of this utility model;

[0019] Figure 5 This is a schematic diagram of the limiting groove of this utility model;

[0020] Figure 6 This is a schematic diagram of the limiting plate of this utility model.

[0021] The following are the labels in the diagram: 1. Fixed platform; 2. First leg; 3. Second leg; 4. Third leg; 5. Fourth leg; 6. Positioning bolt; 7. Groove; 8. Limiting groove; 9. Limiting plate; 10. Slide groove; 11. Limiting rod; 12. Spring; 13. Limiting slot. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 6 A foldable surveying tripod includes a fixed platform 1. A first leg 2 is rotatably connected to the bottom of the fixed platform 1. A second leg 3 is rotatably connected to the outer end of the first leg 2 away from the fixed platform 1. A third leg 4 is slidably connected inside the first leg 2. A fourth leg 5 is slidably connected inside the second leg 3. The third leg 4 and the fourth leg 5 are retractable. When they are retracted into the first leg 2 and the second leg 3, the pivot of the third leg 4 and the fourth leg 5 coincides with the pivot of the first leg 2 and the second leg 3 on the same axis. At this time, the second leg 3 and the fourth leg 5 can be folded directly to further reduce the overall length. The fourth leg 5 is rotatably connected to the third leg 4. A positioning bolt 6 is threaded inside the second leg 3. A groove 7 is provided inside the third leg 4 and the fourth leg 5. The groove 7 works in conjunction with the positioning bolt 6 to lock the third leg 4 and the second leg 3.

[0024] Furthermore, there are three first legs 2, which are symmetrically distributed. There are a total of three sets of first legs 2, second legs 3, third legs 4 and fourth legs 5.

[0025] Furthermore, both the first leg 2 and the second leg 3 have a limiting groove 8 inside. A limiting plate 9 is slidably connected inside the limiting groove 8. One limiting plate 9 is fixedly connected to the third leg 4, and the other limiting plate 9 is fixedly connected to the fourth leg 5. The limiting groove 8 and the limiting plate 9 limit the distance between the third leg 4 and the first leg 2, and between the fourth leg 5 and the second leg 3, to prevent disengagement or misalignment.

[0026] Furthermore, the outer wall of the limiting plate 9 fits against the inner wall of the limiting groove 8, and the limiting plate 9 fits tightly against the limiting groove 8, which can ensure the stability between the third leg 4 and the first leg 2, and between the fourth leg 5 and the second leg 3, and prevent shaking.

[0027] Furthermore, the interior of the second leg 3 and the fourth leg 5 is provided with a sliding groove 10, and a limiting rod 11 is slidably connected inside the sliding groove 10. A spring 12 is fixedly connected between the limiting rod 11 and the sliding groove 10. The interior of the first leg 2 and the third leg 4 is provided with a limiting slot 13. The limiting slot 13 works in conjunction with the limiting rod 11 to lock the first leg 2 and the second leg 3, as well as the third leg 4 and the fourth leg 5.

[0028] Furthermore, there are two slides 10, which are symmetrically distributed. The slides 10, limit rods 11 and springs 12 on the second leg 3 and the fourth leg 5 are each provided with two sets, which, together with the two sets of limit slots 13 on the first leg 2 and the third leg 4, make the whole structure more stable after unfolding.

[0029] The steps for using this utility model are as follows: When using this foldable surveying tripod, directly rotate outward to unfold the second leg 3 and the fourth leg 5 until the limiting rod 11 engages with the limiting slot 13. At this time, you can pull the third leg 4 and the fourth leg 5 so that they extend out from the first leg 2 and the second leg 3. Finally, tighten the positioning bolt 6. After use, reverse the direction and push the third leg 4 and the fourth leg 5 back into the first leg 2 and the second leg 3 so that the pivot of the third leg 4 and the fourth leg 5 coincides with the pivot of the first leg 2 and the second leg 3 on the same axis. At this time, the second leg 3 and the fourth leg 5 can be folded directly to further reduce the overall length, making it more convenient to carry and improve the ease of use.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A foldable surveying tripod, comprising a fixed base (1), the bottom of which is rotatably connected with a first leg (2), characterized in that: The outer end of the first leg (2) is rotatably connected with the second leg (3), the inner part of the first leg (2) is slidably connected with the third leg (4), the inner part of the second leg (3) is slidably connected with the fourth leg (5), the fourth leg (5) is rotatably connected with the third leg (4), the inner part of the second leg (3) is threadedly connected with the positioning bolt (6), the inner part of the third leg (4) and the fourth leg (5) is provided with the recess (7), and the recess (7) is used in cooperation with the positioning bolt (6).

2. The foldable surveying tripod according to claim 1, wherein: The first leg (2) is provided with three, and the three first legs (2) are symmetrically distributed.

3. The foldable surveying tripod according to claim 1, wherein: The inner part of the first leg (2) and the second leg (3) is provided with the limiting groove (8), the inner part of the limiting groove (8) is slidably connected with the limiting plate (9), one of the limiting plates (9) is fixedly connected with the third leg (4), and the other limiting plate (9) is fixedly connected with the fourth leg (5).

4. The collapsible surveying tripod according to claim 3, wherein: The outer side wall of the limiting plate (9) is attached to the inner side wall of the limiting groove (8).

5. The collapsible surveying tripod of claim 1, wherein: The inner part of the second leg (3) and the fourth leg (5) is provided with the sliding groove (10), the inner part of the sliding groove (10) is slidably connected with the limiting plug rod (11), the limiting plug rod (11) and the sliding groove (10) are fixedly connected with the spring (12), the inner part of the first leg (2) and the third leg (4) is provided with the limiting slot (13), and the limiting slot (13) is used in cooperation with the limiting plug rod (11).

6. The collapsible surveying tripod according to claim 5, wherein: The sliding groove (10) is provided with two, and the two sliding grooves (10) are symmetrically distributed.

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