High-stability telescopic tripod

Abstract

The invention relates to the technical field of tripods, and discloses a high-stability telescopic tripod which comprises a top plate, a base, three supporting frames installed on the base and an adjusting mechanism, the top plate is installed on the top of the base, and the three supporting frames are rotationally connected to the outer side of the base at equal angles; the adjusting mechanism is composed of an adjusting assembly used for synchronously adjusting the length of the supporting frames and a fixing assembly used for fixing the position of the adjusting assembly, according to the high-stability telescopic tripod, through the arrangement of the adjusting assembly and the fixing assembly, synchronous and simultaneous extension adjustment can be conducted on the racks on the three supporting frames, and the stability of the tripod is improved. The height adjusting efficiency of the supporting frame is greatly improved, the position of the adjusting assembly can be fixed, the problem that when the sleeves and the connecting rods are not used, the positions of the sleeves and the connecting rods deviate, and consequently the stability of the supporting frame is affected is solved, the three supporting frames can be supported through the three connecting rods, and therefore the stability of the supporting frame is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of tripods, in particular to a high-stability telescopic tripod. Background Art

[0002] A tripod is a device used to carry measuring equipment. Through the auxiliary effect of the tripod, the measuring instrument is more stable during use. In actual use, most measuring instruments require the use of a tripod. The traditional tripod forms a stable support carrier by spreading out the three legs, thereby supporting the measuring instrument.

[0003] The Chinese patent with application number: 202222742896.3 discloses a high-stability engineering surveying tripod, including a mounting platform, a support plate, a sleeve, a support tube, a screw rod, and a support rod. The lower end of the mounting platform is rotatably connected to the support plate, the periphery of the support plate is hingedly connected to the sleeve, the support tube is slidably sleeved in the sleeve, the end of the support rod away from the threaded plate is rotatably connected to the sleeve, a locking sleeve is fixedly connected to the outer wall of the lower end of the sleeve, the support tube passes through the inner side of the locking sleeve, and a mounting cavity is provided on the side wall of the sleeve, a clamping block for clamping the support tube is movably connected in the mounting cavity, and a toggle block is rotatably connected to the locking sleeve, and the toggle block is used to squeeze the clamping block so that the clamping block is clamped on the side wall of the support tube. The utility model is easy to adjust the length of the support tube, and the adjustment length range is continuous, which is convenient to adjust to a suitable state; the operation is convenient and simple, and the locking is more stable.

[0004] Although the above technology can adjust the length of the support tubes of the tripod, it is necessary to adjust the length of the support tubes one by one when adjusting the support tubes, and it is impossible to adjust the lengths of the three support tubes synchronously and simultaneously, resulting in limited adjustment efficiency of the support tubes, thereby reducing its convenience of use. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a high-stability telescopic tripod, which has the advantages of being able to synchronously and simultaneously adjust the three support frames on the tripod and fixing the positions of the adjusted support tubes, thereby solving the above-mentioned problems.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a high-stability telescopic tripod, comprising a top plate, a base, three support frames installed on the base and an adjustment mechanism, wherein the top plate is installed on the top of the base, and the three support frames are rotatably connected to the outside of the base at equal angles, and the adjustment mechanism is composed of an adjustment component for synchronously adjusting the length of the support frame and a fixing component for fixing the position of the adjustment component; the adjustment component comprises a connecting rod and a bracket, one end of the connecting rod is connected to the fixing component, and the other end of the connecting rod is fixedly connected to two fixing rods on the inner side, and the fixing rod The outer side of the support frame is rotatably connected to two symmetrically distributed pawls, the outer side of the pawl is fixedly connected to a compression spring, the outer side of the connecting rod is rotatably connected to a rotating shaft, the outer end of the rotating shaft is fixedly connected to a lever, and the other end of the rotating shaft is fixedly connected to a protrusion, the inner side of the support frame is rotatably connected to a driven gear, the outer side of the driven gear is meshed with a rack, the outer side of the rack is slidably connected to a sliding groove, the sliding groove is provided on the inner side of the support frame, the other side of the driven gear is meshed with a driving gear, the outer side of the driving gear is fixedly connected to a transmission shaft, and the outer end of the transmission shaft is fixedly connected to a ratchet.

[0007] Preferably, there are three connecting rods and brackets, the three connecting rods are installed on the fixed assembly, and the three brackets are fixedly connected to the inner sides of the three support frames, respectively, the positions of the three connecting rods correspond to the three brackets, respectively, and the number and specifications of structures on the three connecting rods are the same, and the number and specifications of structures on the three brackets are also the same.

[0008] Preferably, one end of the two fixed rods away from the connecting rod is fixedly connected to the limiting plate, the number of the compression springs is the same as the number of pawls, one end of the two compression springs is respectively fixedly connected to the outside of the two pawls, and the other ends of the two compression springs are fixedly connected to the inside of the connecting rod, and the sizes of the two pawls are adapted to the ratchet.

[0009] Preferably, the protrusion is distributed between the two pawls, and the size of the protrusion is adapted to the two pawls, the shift rod is distributed on the outside of the connecting rod, the diameter and the number of teeth of the driven gear are smaller than those of the driving gear, the end of the transmission shaft away from the ratchet is rotatably connected to the inner side of the bracket through a bearing seat, and the driven gear is rotatably connected to the inner side of the bracket through a rotating rod, the number of the sliding grooves is the same as that of the support frame, and the three sliding grooves are respectively opened on the three support frames, the number of the racks is the same as that of the sliding grooves, and the three racks are respectively slidably connected to the inner sides of the three sliding grooves, and the bottoms of the three racks are fixedly connected to the bottom plate.

[0010] Preferably, the fixing assembly includes a screw rod fixedly connected to the bottom of the base, the outside of the screw rod is slidably connected to a sleeve, the outside of the sleeve rod is fixedly connected to three supports, the inside of the support rod is fixedly connected to a support rod, the top of the sleeve rod is fixedly connected to a fixing spring, the bottom of the screw rod is fixedly connected to a fixing plate, and the outside of the screw rod is threadedly connected to a slider.

[0011] Preferably, the three supports are distributed at equal angles, and the inner sides of the three supports are fixedly connected with support rods, and the three support rods are rotatably connected to three connecting rods respectively.

[0012] Preferably, one end of the fixing spring away from the sleeve is fixedly connected to the bottom of the base, and the fixing spring is distributed on the outside of the screw rod.

[0013] Preferably, an internal thread is provided on the inner side of the slider, the slider is threadably connected to the screw rod via the internal thread, and the size of the slider is adapted to the sleeve.

[0014] Compared with the prior art, the present invention provides a high-stability telescopic tripod, which has the following beneficial effects:

[0015] 1. The high-stability telescopic tripod is provided with an adjustment component. When the length of the support frame needs to be adjusted, the lever on the outer side of the connecting rod is first moved. The rotation of the lever drives the protrusion to rotate through the rotating shaft. The rotation of the protrusion squeezes one of the two pawls, so that one of the pawls contacts the ratchet. Then, the pawls in the other two connecting rods can be contacted with the ratchet in the same way, and the rotation directions of the three ratchet wheels are kept consistent. Then, the user can slide the sleeve upward. The movement of the sleeve drives the movement of the support. The movement of the support drives the movement of the support rod. The movement of the support rod drives one end of the connecting rod to move upward. At this time, the pawl in the other end of the connecting rod cannot restrict the ratchet. Then, The user can slide the sleeve downward, then the pawl can limit the ratchet, thereby driving the ratchet to rotate, the ratchet rotation drives the transmission shaft to rotate, the transmission shaft rotation drives the driving gear to rotate, the driving gear rotation drives the driven gear to rotate, the driven gear rotation drives the rack to move downward through the sliding groove, and the rack then extends out of the sliding groove. When recovering, the user can push the lever in the opposite direction, so that the other pawl contacts the ratchet, and then the rack can be retracted in the same way; thereby achieving the ability to adjust the length of the support frame, and at the same time, the lengths of three support frames can be adjusted synchronously at one time, thereby greatly improving the adjustment effect and the convenience of use.

[0016] 2. The high-stability telescopic tripod has a fixing component. After adjusting the length of the support frame through the adjusting component, the user can rotate the slider, and the slider moves upward. When the slider moves to a certain position, it will contact the bottom of the sleeve, and then the sleeve is fixed with the cooperation of the fixing spring; thereby fixing the position of the adjusting component, thereby avoiding the position of the sleeve and the connecting rod being offset when not in use, thereby affecting the stability of the support frame.

[0017] 3. The high-stability telescopic tripod is provided with an adjustment mechanism so that the three connecting rods can support the three support frames, thereby greatly improving the stability of the support frames. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a first side sectional view of the present invention;

[0020] Figure 3 is a second side cross-sectional view of the present invention;

[0021] Figure 4 is a third side sectional view of the present invention;

[0022] Figure 5 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0023] Figure 6 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0024] Figure 7 for Figure 3 Enlarged schematic diagram of the structure at point C in the middle.

[0025] In the figure: 1. top plate; 2. base; 3. support frame; 4. adjustment assembly; 41. connecting rod; 42. bracket; 43. fixing rod; 44. ratchet; 45. compression spring; 46. rotating shaft; 47. lever; 48. bump; 49. driven gear; 410. rack; 411. sliding groove; 412. driving gear; 413. transmission shaft; 414. ratchet; 5. fixing assembly; 51. screw; 52. sleeve; 53. support; 54. support rod; 55. fixing spring; 56. fixing plate; 57. slider. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-7The invention discloses a high-stability telescopic tripod, comprising a top plate 1, a base 2, three support frames 3 mounted on the base 2 and an adjustment mechanism, wherein the top plate 1 is mounted on the top of the base 2, and the three support frames 3 are rotatably connected to the outside of the base 2 at equal angles, and the adjustment mechanism is composed of an adjustment component 4 for synchronously adjusting the length of the support frame 3 and a fixing component 5 for fixing the position of the adjustment component 4; the adjustment component 4 comprises a connecting rod 41 and a bracket 42, one end of the connecting rod 41 is connected to the fixing component 5, and the other end of the connecting rod 41 is fixedly connected to two fixing rods 43 on the inner side, and the outer side of the fixing rod 43 is rotatably connected to two symmetrically distributed ratchet claws 44, and the outer side of the ratchet claw 44 is fixedly connected to a compression spring Spring 45, the outer rotatable connection of the connecting rod 41 is connected with a rotating shaft 46, the outer end of the rotating shaft 46 is fixedly connected with a lever 47, and the other end of the rotating shaft 46 is fixedly connected with a protrusion 48, the inner side of the bracket 42 is connected with a driven gear 49, the outer side of the driven gear 49 is meshed with a rack 410, the outer side of the rack 410 is slidably connected with a sliding groove 411, the sliding groove 411 is opened on the inner side of the support frame 3, the other side of the driven gear 49 is meshed with a driving gear 412, the outer side of the driving gear 412 is fixedly connected with a transmission shaft 413, and the outer end of the transmission shaft 413 is fixedly connected with a ratchet 414, the connecting rod 41 and the bracket 42 are three, and the three connecting rods 41 are installed in the fixed group The three brackets 42 are respectively fixedly connected to the inner sides of the three support frames 3, the positions of the three connecting rods 41 correspond to the three brackets 42, and the number and specifications of the structures on the three connecting rods 41 are the same, and the number and specifications of the structures on the three brackets 42 are also the same. One end of the two fixing rods 43 away from the connecting rod 41 is fixedly connected to the limiting plate, the number of compression springs 45 is the same as the number of pawls 44, one end of the two compression springs 45 is respectively fixedly connected to the outside of the two pawls 44, and the other ends of the two compression springs 45 are fixedly connected to the inner side of the connecting rod 41, the sizes of the two pawls 44 are adapted to the ratchet 414, and the protrusions 48 are distributed on the two The pawls 44 are arranged between the pawls 44, and the size of the protrusion 48 is adapted to the two pawls 44. The lever 47 is distributed on the outside of the connecting rod 41. The diameter and the number of teeth of the driven gear 49 are smaller than those of the driving gear 412. The end of the transmission shaft 413 away from the ratchet 414 is rotatably connected to the inner side of the bracket 42 through a bearing seat. The driven gear 49 is rotatably connected to the inner side of the bracket 42 through a rotating rod. The number of sliding grooves 411 is the same as that of the support frame 3. The three sliding grooves 411 are respectively opened on the three support frames 3. The number of racks 410 is the same as that of the sliding grooves 411. The three racks 410 are respectively slidably connected to the inner sides of the three sliding grooves 411, and the bottoms of the three racks 410 are fixedly connected to the bottom plate.

[0028] When in use, first push the lever 47 on the outside of the connecting rod 41, and the lever 47 rotates to drive the protrusion 48 to rotate through the rotating shaft 46. The rotation of the protrusion 48 can squeeze one of the two pawls 44, so that one of the pawls 44 contacts the ratchet 414. Then the user can make the pawls 44 in the other two connecting rods 41 contact the ratchet 414 in the same way, and make the rotation directions of the three ratchet wheels 414 consistent. Then the user can slide the fixing component 5 upward, and the movement of the fixing component 5 drives one end of the connecting rod 41 to move upward. At this time, the pawl 44 in the other end of the connecting rod 41 cannot restrict the ratchet 414. Then the user can slide the fixing component 5 downward, and the pawl 44 can restrict the ratchet 414. The ratchet 414 is driven to rotate, the ratchet 414 is driven to rotate the transmission shaft 413, the transmission shaft 413 is driven to rotate the driving gear 412, the driving gear 412 is driven to rotate the driven gear 49, the driven gear 49 is driven to drive the rack 410 to move downward through the sliding slot 411, and the rack 410 will extend out of the sliding slot 411. When recovering, the user can reversely push the lever 47 to make another pawl 44 contact with the ratchet 414, and then the rack 410 can be retracted in the same way; thereby, the length of the support frame 3 can be adjusted, and the lengths of the three support frames 3 can be adjusted synchronously at one time, thereby greatly improving the adjustment effect and the convenience of use.

[0029] Furthermore, the fixing assembly 5 includes a screw 51 fixedly connected to the bottom of the base 2, a sleeve 52 is slidably connected to the outside of the screw 51, three supports 53 are fixedly connected to the outside of the sleeve 52, a support rod 54 is fixedly connected to the inside of the support 53, a fixing spring 55 is fixedly connected to the top of the sleeve 52, a fixing plate 56 is fixedly connected to the bottom of the screw 51, a slider 57 is threadedly connected to the outside of the screw 51, the three supports 53 are distributed at equal angles, and the inner sides of the three supports 53 are fixedly connected to the support rod 54, the three support rods 54 are rotatably connected to the three connecting rods 41 respectively, one end of the fixing spring 55 away from the sleeve 52 is fixedly connected to the bottom of the base 2, and the fixing spring 55 is distributed on the outside of the screw 51, an internal thread is provided on the inner side of the slider 57, the slider 57 is threadedly connected to the screw 51 through the internal thread, and the size of the slider 57 is adapted to the sleeve 52.

[0030] During use, the user can adjust the rotation direction of the adjusting component 4, and then continuously slide the sleeve 52 up and down to provide driving force for the adjusting component 4. After the adjustment is completed, the user can rotate the slider 57, and the slider 57 moves upward. When the slider 57 moves to a certain position, it will contact the bottom of the sleeve 52, and then the sleeve 52 will be fixed with the cooperation of the fixing spring 55; thereby, the position of the adjusting component 4 is fixed, thereby avoiding the position of the sleeve 52 and the connecting rod 41 being offset when not in use, thereby affecting the stability of the support frame 3.

[0031] It should be noted that in the initial state, the bottom of the sleeve 52 is in contact with the top of the slider 57 .

[0032] Working principle: when in use, the user first unfolds the three support frames 3, and then when the height of the support frames 3 needs to be adjusted, the user first moves the lever 47 on the outside of the connecting rod 41, and the lever 47 rotates through the rotating shaft 46 to drive the protrusion 48 to rotate, and the rotation of the protrusion 48 can squeeze one of the two pawls 44, so that one of the pawls 44 contacts the ratchet 414, and then the user can use the same method to make the pawls 44 in the other two connecting rods 41 contact the ratchet 414, and make the rotation directions of the three ratchet wheels 414 consistent, and then the user can slide the sleeve 52 upwards, the movement of the sleeve 52 drives the support 53 to move, the movement of the support 53 drives the support rod 54 to move, and the movement of the support rod 54 drives one end of the connecting rod 41 to move upwards. At this time, the pawl 44 in the other end of the connecting rod 41 cannot limit the ratchet 414, and then use The user can slide the sleeve 52 downward, and the pawl 44 can limit the ratchet 414, thereby driving the ratchet 414 to rotate, and the rotation of the ratchet 414 drives the transmission shaft 413 to rotate, and the rotation of the transmission shaft 413 drives the driving gear 412 to rotate, and the driving gear 412 drives the driven gear 49 to rotate, and the driven gear 49 drives the rack 410 to move downward through the sliding groove 411. At this time, the rack 410 will extend out of the sliding groove 411. When recovering, the user can reversely push the lever 47 to make the other pawl 44 contact with the ratchet 414, and then the rack 410 can be retracted in the same way. After the adjustment is completed, the user can rotate the slider 57, and the slider 57 moves upward. When the slider 57 moves to a certain position, it will contact the bottom of the sleeve 52, and then the sleeve 52 is fixed with the cooperation of the fixing spring 55.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-stability telescopic tripod, comprising a top plate (1), a base (2), three support frames (3) mounted on the base (2) and an adjustment mechanism, wherein the top plate (1) is mounted on the top of the base (2), and the three support frames (3) are rotatably connected to the outside of the base (2) at equal angles, and characterized in that: The adjustment mechanism is composed of an adjustment component (4) for synchronously adjusting the length of the support frame (3) and a fixing component (5) for fixing the position of the adjustment component (4); The adjusting assembly (4) comprises a connecting rod (41) and a bracket (42), one end of the connecting rod (41) is connected to the fixing assembly (5), and the other end of the connecting rod (41) is fixedly connected to two fixing rods (43) on the inner side, the outer side of the fixing rod (43) is rotatably connected to two symmetrically distributed ratchet claws (44), the outer side of the ratchet claw (44) is fixedly connected to a compression spring (45), the outer side of the connecting rod (41) is rotatably connected to a rotating shaft (46), the outer end of the rotating shaft (46) is fixedly connected to a lever (47), and the other end of the rotating shaft (46) is fixedly connected to a lever (47). The end of the support frame (3) is fixedly connected with a protrusion (48), the inner side of the support frame (42) is rotatably connected with a driven gear (49), the outer side of the driven gear (49) is meshed with a rack (410), the outer side of the rack (410) is slidably connected with a sliding groove (411), the sliding groove (411) is opened on the inner side of the support frame (3), the other side of the driven gear (49) is meshed with a driving gear (412), the outside of the driving gear (412) is fixedly connected with a transmission shaft (413), and the outer end of the transmission shaft (413) is fixedly connected with a ratchet (414).

2. The high stability telescopic tripod according to claim 1, characterized in that: There are three connecting rods (41) and three brackets (42), the three connecting rods (41) are all mounted on the fixing assembly (5), and the three brackets (42) are respectively fixedly connected to the inner sides of the three support frames (3), the positions of the three connecting rods (41) respectively correspond to the three brackets (42), and the number and specifications of structures on the three connecting rods (41) are the same, and the number and specifications of structures on the three brackets (42) are also the same.

3. The high stability telescopic tripod according to claim 1, characterized in that: One end of the two fixed rods (43) away from the connecting rod (41) is fixedly connected to the limiting plate, the number of the compression springs (45) is the same as the number of the pawls (44), one end of the two compression springs (45) is respectively fixedly connected to the outside of the two pawls (44), and the other ends of the two compression springs (45) are fixedly connected to the inside of the connecting rod (41), and the sizes of the two pawls (44) are compatible with the ratchet (414).

4. The high stability telescopic tripod according to claim 1, characterized in that: The protrusion (48) is distributed between the two ratchet pawls (44), and the size of the protrusion (48) is adapted to the two ratchet pawls (44). The shifting rod (47) is distributed on the outer side of the connecting rod (41). The diameter and the number of teeth of the driven gear (49) are both smaller than those of the driving gear (412). The end of the transmission shaft (413) away from the ratchet wheel (414) is rotatably connected to the inner side of the bracket (42) through a bearing seat. The driven gear (49) is rotatably connected to the inner side of the bracket (42) through a rotating rod. The number of the sliding grooves (411) is the same as that of the support frame (3). The three sliding grooves (411) are respectively provided on the three support frames (3). The number of the racks (410) is the same as that of the sliding grooves (411). The three racks (410) are respectively slidably connected to the inner sides of the three sliding grooves (411), and the bottoms of the three racks (410) are fixedly connected to a bottom plate.

5. The high stability telescopic tripod according to claim 1, characterized in that: The fixing assembly (5) comprises a screw rod (51) fixedly connected to the bottom of the base (2); the screw rod (51) is slidably connected to the outside of the screw rod (51); the outside of the sleeve (52) is fixedly connected to three supports (53); the inside of the support (53) is fixedly connected to a support rod (54); the top of the sleeve (52) is fixedly connected to a fixing spring (55); the bottom of the screw rod (51) is fixedly connected to a fixing plate (56); and the outside of the screw rod (51) is threadedly connected to a slider (57).

6. The high stability telescopic tripod according to claim 5, characterized in that: The three supports (53) are distributed at equal angles, and the inner sides of the three supports (53) are all fixedly connected with support rods (54), and the three support rods (54) are rotatably connected to the three connecting rods (41) respectively.

7. The high stability telescopic tripod according to claim 5, characterized in that: One end of the fixing spring (55) away from the sleeve (52) is fixedly connected to the bottom of the base (2), and the fixing spring (55) is distributed on the outside of the screw rod (51).

8. The high stability telescopic tripod according to claim 5, characterized in that: An internal thread is provided on the inner side of the slider (57), and the slider (57) is threadedly connected to the screw rod (51) via the internal thread. The size of the slider (57) is adapted to that of the sleeve (52).

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