Adjustable three-legged support

Abstract

The utility model relates to the technical field of three-legged supports, in particular to an adjustable three-legged support. Comprising a supporting leg assembly, a base assembly and an adjusting assembly, the supporting leg assembly comprises a loop bar column pipe and a positioning nail, the base assembly comprises a base ring, the adjusting assembly comprises a limiting rod, a warning strip is attached to the outer wall of the peripheral face of the base ring, and a mounting disc is connected to the end, away from the limiting ring, of the limiting rod; the bottom of the mounting disc is connected with a bearing, and the top of the mounting disc is provided with a rotating disc. When the use height of the mounting disc needs to be adjusted, a hand wheel is held and rotated, then the hand wheel drives a threaded rod to synchronously rotate in the rotating process, the mounting disc ascends and descends under the combined action of the threaded rod and a limiting rod, and then the use height of the mounting disc is adjusted; the angle of the surveying and mapping instrument can be adjusted by rotating the disc, and multi-angle surveying and mapping of workers are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of tripod supports, in particular to an adjustable tripod support. Background Art

[0002] Topographic surveying refers to the work of surveying and mapping topographic maps, that is, determining the projection position and elevation of the objects and terrain on the earth's surface on the horizontal plane, reducing them at a certain ratio, and drawing them into topographic maps with symbols and annotations. Topographic surveying mainly adopts aerial photogrammetry methods, including control measurement and detailed measurement. According to the different instruments used, detailed measurement is mainly divided into planar instrument mapping method, small planar instrument and theodolite combined mapping method, theodolite mapping method, etc.

[0003] The existing tripod used for topographic surveying and mapping is difficult to adjust in height and angle during use, which is inconvenient for workers to survey and map. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide an adjustable tripod to solve the problem that the height and angle of the tripod are difficult to adjust, which is inconvenient for workers to survey and map. When the height of the mounting disc needs to be adjusted, the hand wheel is held and rotated, and then the hand wheel drives the threaded rod to rotate synchronously during the rotation process. The mounting disc is raised and lowered under the joint action of the threaded rod and the limit rod, thereby realizing the adjustment of the height of the mounting disc. The angle of the surveying and mapping instrument can be adjusted by rotating the disc, which is convenient for workers to conduct multi-angle surveying and mapping.

[0005] To achieve the above purpose, the utility model adopts the following technical solution: an adjustable tripod, including a leg assembly, a base assembly, and an adjustment assembly, wherein the leg assembly includes a sleeve rod column tube and a positioning nail, the base assembly includes a base ring, the adjustment assembly includes a limit rod, a sleeve rod leg is arranged on the inner side of the sleeve rod column tube, the sleeve rod leg is connected to a supporting foot at one end away from the sleeve rod column tube, a positioning bolt is arranged on the inner side of the sleeve rod column tube, a clearance groove is opened on the inner side of the base ring, and the base A warning strip is affixed to the outer wall of the circumference of the ring, a limiting sleeve is arranged on the inner side of the base ring, a threaded sleeve is arranged on the inner side of the base ring, a rotating shaft is arranged on the inner side of the sleeve rod column tube, one end of the limiting rod is connected to the limiting ring, the end of the limiting rod away from the limiting ring is connected to a mounting disc, a bearing is connected to the bottom of the mounting disc, a threaded rod is arranged on the inner side of the threaded sleeve, a rotating disc is arranged on the top of the mounting disc, and the rotating disc is rotatably connected to the mounting disc through a bearing.

[0006] The beneficial effect of the utility model is that when the use height of the mounting disc needs to be adjusted, the hand wheel is held and rotated, and then the hand wheel drives the threaded rod to rotate synchronously during the rotation process, and the mounting disc is raised and lowered under the joint action of the threaded rod and the limit rod, thereby realizing the adjustment of the use height of the mounting disc, and the angle of the surveying and mapping instrument can be adjusted by rotating the disc, which is convenient for the staff to perform multi-angle surveying and mapping.

[0007] To pull the pole legs and adjust them to their usable length:

[0008] As a further improvement of the above technical solution: three sleeve rod column tubes are provided in total, the sleeve rod column tubes are slidably connected to the sleeve rod legs, and the positioning bolts are threadedly rotatably connected to the wall of the sleeve rod column tube.

[0009] The beneficial effect of this improvement is that when in use, first rotate the positioning bolt to release the limiting fixation of the sleeve rod leg, then pull the sleeve rod leg and adjust its use length, and then rotate the positioning bolt again to limit the sleeve rod leg.

[0010] In order to increase the friction between it and the ground:

[0011] As a further improvement of the above technical solution: one end of the support foot away from the sleeve rod leg is connected to a protective pad, and one end of the sleeve rod column tube away from the sleeve rod leg is rotatably connected to the inner wall of the give way groove through a rotating shaft, and the inner side of the support foot and the protective pad is provided with a hole groove for inserting a positioning nail.

[0012] The beneficial effect of this improvement is: after completing the adjustment of the usable length of the sleeve rod legs, the sleeve rod column tube is rotated by the rotating shaft to adjust the usable angle of the sleeve rod column tube and the sleeve rod legs, thereby achieving the adjustment of the usable height of the base ring, and the supporting feet and the protective pads are fixed at the same time by the positioning nails. By setting the protective pads, the friction between them and the ground can be increased, thereby ensuring the stability of the tripod when in use.

[0013] In order to be able to remind people around the tripod:

[0014] As a further improvement of the above technical solution: three make way grooves are opened on the inner side of the circumference of the base ring, and the three make way grooves are arranged at equal intervals.

[0015] The beneficial effects of this improvement are as follows: by opening a clearance groove, a groove body is provided for rotating the rod column tube, and then by rotating the rod column tube in the clearance groove, the use angle of the rod column tube can be adjusted. By setting a warning strip, people around the tripod can be reminded to avoid touching the tripod and causing damage to the surveying and mapping instrument.

[0016] In order to ensure the stability of the limit rod during sliding:

[0017] As a further improvement of the above technical solution: the limiting sleeve is a hollow cylindrical tube body, and there are three limiting sleeves in total. The limiting sleeves penetrate the base ring and both ends are exposed outside the base ring by 10 mm.

[0018] The beneficial effect of this improvement is that, through the setting of the limiting sleeve, a groove body for the limiting rod to slide is provided, and at the same time, it is used to ensure the stability of the limiting rod during the sliding process.

[0019] To achieve a threaded rotational connection between the threaded rod and the base ring via a threaded sleeve:

[0020] As a further improvement of the above technical solution: the inner side of the threaded sleeve is provided with an internal thread matching the threaded rod, and the threaded rod is threadedly rotatably connected to the threaded sleeve.

[0021] The beneficial effect of this improvement is that, through the provision of the threaded sleeve, it can be threadedly connected to the threaded rod, thereby realizing the threaded connection between the threaded rod and the base ring through the threaded sleeve.

[0022] In order to form a stable triangular structure and thus ensure stability when adjusting the height of the mounting disc:

[0023] As a further improvement of the above technical solution: one end of the limiting rod away from the limiting ring is fixedly connected to the bottom of the mounting disc, three limiting rods are provided in total, and the limiting rods are slidably connected to the limiting sleeve.

[0024] The beneficial effect of this improvement is that when the hand wheel is held to rotate the threaded rod, the limit rod follows the mounting disc to slide inside the limit sleeve, and a stable triangular structure is formed by the arrangement of three limit rods, thereby ensuring stability when the mounting disc is adjusted in height.

[0025] To adjust the height of the mounting disc:

[0026] As a further improvement of the above technical solution: one end of the threaded rod is connected to a handwheel, and the end of the threaded rod away from the handwheel passes through the threaded sleeve and extends to be rotatably connected to the bearing.

[0027] The beneficial effect of this improvement is: when it is necessary to adjust the use height of the mounting disc, hold the hand wheel and rotate it, and then the hand wheel drives the threaded rod to rotate synchronously during the rotation process, and the mounting disc is raised and lowered under the joint action of the threaded rod and the limit rod, thereby realizing the adjustment of the use height of the mounting disc, and the angle of the surveying and mapping instrument can be adjusted by rotating the disc, which is convenient for the staff to perform multi-angle surveying and mapping. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front structural schematic diagram of the utility model.

[0029] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0030] Figure 3 for Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the base ring of the utility model.

[0032] Figure 5 It is a structural schematic diagram of the sleeve rod support leg of the utility model.

[0033] In the figure: 1. Leg assembly; 11. Rod column tube; 12. Rod leg; 13. Positioning bolt; 14. Support foot; 15. Protective pad; 16. Positioning pin; 2. Base assembly; 21. Base ring; 22. Clearance groove; 23. Warning strip; 24. Limit sleeve; 25. Threaded sleeve; 26. Rotating shaft; 3. Adjustment assembly; 31. Limit rod; 32. Limit ring; 33. Mounting disc; 34. Bearing; 35. Threaded rod; 36. Handwheel; 37. Rotating disc. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0035] like Figure 1-5As shown, an adjustable tripod comprises a leg assembly 1, a base assembly 2, and an adjustment assembly 3. The leg assembly 1 comprises a sleeve rod column tube 11 and a positioning nail 16. The base assembly 2 comprises a base ring 21. The adjustment assembly 3 comprises a limiting rod 31. A sleeve rod leg 12 is arranged on the inner side of the sleeve rod column tube 11. One end of the sleeve rod leg 12 away from the sleeve rod column tube 11 is connected to a supporting foot 14. A positioning bolt 13 is arranged on the inner side of the sleeve rod column tube 11. A clearance groove 22 is opened on the inner side of the base ring 21. A warning strip 23 is attached to the outer wall of the peripheral surface of the base ring 21. A limiting sleeve 24 is arranged on the inner side of the base ring 21. A threaded sleeve 25 is arranged on the inner side of the base ring 21. The inner side of the sleeve rod column tube 11 is provided with a threaded sleeve 25. The rotating shaft 26, one end of the limit rod 31 is connected to the limit ring 32, the end of the limit rod 31 away from the limit ring 32 is connected to the mounting disc 33, the bottom of the mounting disc 33 is connected to the bearing 34, the inner side of the threaded sleeve 25 is provided with a threaded rod 35, the top of the mounting disc 33 is provided with a rotating disc 37, the rotating disc 37 is rotatably connected to the mounting disc 33 through the bearing 34, the sleeve rod column tube 11 is provided with three, the sleeve rod column tube 11 is slidably connected to the sleeve rod leg 12, and the positioning bolt 13 is threadedly rotatably connected to the wall of the sleeve rod column tube 11; when in use, the positioning bolt 13 is first rotated to release the limiting fixation of the sleeve rod leg 12, and then the sleeve rod leg 12 is pulled to adjust its use length. The end of the support foot 14 away from the sleeve rod leg 12 is connected with a protective pad 15, and the end of the sleeve rod column tube 11 away from the sleeve rod leg 12 is rotatably connected to the inner wall of the give way groove 22 through the rotating shaft 26, and the inner sides of the support foot 14 and the protective pad 15 are provided with a hole groove for inserting the positioning nail 16; after the adjustment of the use length of the sleeve rod leg 12 is completed, the sleeve rod column tube 11 is rotated by the rotating shaft 26 to adjust the use angle of the sleeve rod column tube 11 and the sleeve rod leg 12, thereby adjusting the use height of the base ring 21, and the support foot 14 and the protective pad 15 are fixed at the same time by the positioning nail 16. Through the setting of the protective pad 15, it can To increase the friction between the tripod and the ground, and thus ensure the stability of the tripod when in use, three clearance grooves 22 are provided on the inner side of the circumference of the base ring 21, and the three clearance grooves 22 are arranged at equal intervals; through the opening of the clearance grooves 22, a groove body for rotating the sleeve rod column tube 11 is provided, and then the sleeve rod column tube 11 is rotated in the clearance grooves 22 to adjust the use angle of the sleeve rod column tube 11. Through the setting of the warning strip 23, the personnel around the tripod can be reminded to avoid touching the tripod and causing damage to the surveying and mapping instrument. The limiting sleeve 24 is a hollow cylindrical tube body, and there are three limiting sleeves 24 in total. The limiting sleeve 24 passes through the base ring 21 and both ends are exposed outside the base ring 21 by 10 mm;The limit sleeve 24 is provided with a groove for the limit rod 31 to slide, and at the same time, is used to ensure the stability of the limit rod 31 during the sliding process. The inner side of the threaded sleeve 25 is provided with an internal thread matching the threaded rod 35, and the threaded rod 35 is threadedly rotatably connected to the threaded sleeve 25; the threaded sleeve 25 is provided so that it can be threadedly rotatably connected to the threaded rod 35, and then used to realize the threaded rotation connection between the threaded rod 35 and the base ring 21 through the threaded sleeve 25, and the end of the limit rod 31 away from the limit ring 32 is fixedly connected to the bottom of the mounting disc 33, and the limit rod 31 is provided with three limit rods, and the limit rod 31 is slidably connected to the limit sleeve 24; when the hand wheel 36 is held to rotate the threaded rod 35, the limit rod 31 follows the mounting disc 33. Slide inside the limiting sleeve 24, and form a stable triangular structure through the arrangement of three limiting rods 31, thereby ensuring the stability of the height adjustment of the mounting disc 33. One end of the threaded rod 35 is connected to a hand wheel 36, and the end of the threaded rod 35 away from the hand wheel 36 passes through the threaded sleeve 25 and extends to be rotatably connected with the bearing 34; when it is necessary to adjust the use height of the mounting disc 33, hold the hand wheel 36 and rotate it, and then the hand wheel 36 drives the threaded rod 35 to rotate synchronously during the rotation process, and the mounting disc 33 is lifted and lowered under the joint action of the threaded rod 35 and the limiting rod 31, thereby realizing the adjustment of the use height of the mounting disc 33, and the angle of the surveying and mapping instrument can be adjusted by rotating the disc 37, which is convenient for the staff to conduct multi-angle surveying and mapping. ;

[0036] The working principle of the utility model is as follows: when in use, first rotate the positioning bolt 13 to release the limit fixation of the sleeve rod support leg 12, then pull the sleeve rod support leg 12 and adjust its use length, and then rotate the positioning bolt 13 again to limit and fix the sleeve rod support leg 12. After completing the adjustment of the use length of the sleeve rod support leg 12, the sleeve rod column tube 11 is rotated by the rotating shaft 26 to achieve the adjustment of the use angle of the sleeve rod column tube 11 and the sleeve rod support leg 12, thereby achieving the adjustment of the use height of the base ring 21, and the support foot 14 and the protective pad 15 are fixed at the same time by the positioning nail 16. Through the setting of the protective pad 15, the friction between it and the ground can be increased, thereby ensuring the stability of the tripod when in use. When it is necessary to adjust the use height of the mounting disc 33, hold the hand wheel 36 and rotate it, and then the hand wheel 36 drives the threaded rod 35 to rotate synchronously during the rotation process, and the mounting disc 33 is lifted and lowered under the joint action of the threaded rod 35 and the limit rod 31. The utility model discloses a method for adjusting the height of the mounting disc 33 by lowering the mounting disc 33. The angle of the surveying and mapping instrument can be adjusted by rotating the disc 37, which is convenient for the staff to conduct multi-angle surveying and mapping. The three limiting rods 31 are provided to form a stable triangular structure, thereby ensuring the stability when the height of the mounting disc 33 is adjusted. The threaded sleeve 25 is provided to enable it to be threadedly connected with the threaded rod 35, thereby realizing the threaded rotation connection between the threaded rod 35 and the base ring 21 through the threaded sleeve 25. The limiting sleeve 24 is provided to provide a groove for the sliding of the limiting rod 31, and at the same time to ensure the stability of the limiting rod 31 during the sliding process. The groove 22 is provided to provide a groove for the rotation of the sleeve rod column tube 11, thereby realizing the adjustment of the use angle of the sleeve rod column tube 11 by rotating the sleeve rod column tube 11 in the groove 22. The warning strip 23 is provided to remind the personnel around the tripod to prevent them from touching the tripod and causing damage to the surveying and mapping instrument.

[0037] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0038] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. An adjustable tripod, comprising a leg assembly (1), a base assembly (2), and an adjustment assembly (3), wherein the leg assembly (1) comprises a sleeve rod column tube (11) and a positioning pin (16), the base assembly (2) comprises a base ring (21), and the adjustment assembly (3) comprises a limit rod (31), characterized in that: A rod leg (12) is arranged on the inner side of the rod column tube (11), and one end of the rod leg (12) away from the rod column tube (11) is connected to a support foot (14). A positioning bolt (13) is arranged on the inner side of the rod column tube (11). A clearance groove (22) is provided on the inner side of the base ring (21). A warning strip (23) is attached to the outer wall of the circumference of the base ring (21). A limiting sleeve (24) is arranged on the inner side of the base ring (21). A threaded sleeve (25) is arranged on the inner side of the base ring (21). A rotating shaft (26) is arranged on the inner side of the sleeve column tube (11); one end of the limiting rod (31) is connected to a limiting ring (32); one end of the limiting rod (31) away from the limiting ring (32) is connected to a mounting disc (33); a bearing (34) is connected to the bottom of the mounting disc (33); a threaded rod (35) is arranged on the inner side of the threaded sleeve (25); a rotating disc (37) is arranged on the top of the mounting disc (33); and the rotating disc (37) is rotatably connected to the mounting disc (33) via the bearing (34).

2. The adjustable tripod according to claim 1, characterized in that: A total of three sleeve rod column tubes (11) are provided. The sleeve rod column tubes (11) are slidably connected to the sleeve rod legs (12), and the positioning bolts (13) are threadedly rotatably connected to the wall of the sleeve rod column tube (11).

3. The adjustable tripod according to claim 1, characterized in that: One end of the support foot (14) away from the sleeve rod leg (12) is connected to a protective pad (15); one end of the sleeve rod column tube (11) away from the sleeve rod leg (12) is rotatably connected to the inner wall of the clearance groove (22) via a rotating shaft (26); and holes for inserting positioning pins (16) are provided on the inner sides of the support foot (14) and the protective pad (15).

4. The adjustable tripod according to claim 1, characterized in that: Three clearance grooves (22) are provided on the inner side of the circumferential surface of the base ring (21), and the three clearance grooves (22) are arranged at equal intervals.

5. The adjustable tripod according to claim 1, characterized in that: The limiting sleeve (24) is a hollow cylindrical tube body. Three limiting sleeves (24) are provided in total. The limiting sleeves (24) penetrate the base ring (21) and both ends are exposed outside the base ring (21) by 10 mm.

6. The adjustable tripod according to claim 1, characterized in that: The inner side of the threaded sleeve (25) is provided with an internal thread matching the threaded rod (35), and the threaded rod (35) is threadedly rotatably connected to the threaded sleeve (25).

7. The adjustable tripod according to claim 1, characterized in that: One end of the limiting rod (31) away from the limiting ring (32) is fixedly connected to the bottom of the mounting disc (33), and a total of three limiting rods (31) are provided. The limiting rods (31) are slidably connected to the limiting sleeve (24).

8. The adjustable tripod according to claim 1, characterized in that: One end of the threaded rod (35) is connected to a hand wheel (36), and one end of the threaded rod (35) away from the hand wheel (36) passes through the threaded sleeve (25) and extends to be rotatably connected to the bearing (34).

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