CN113137548A

CN113137548A - Quick leveling tripod

Info

Publication number: CN113137548A
Application number: CN202110486473.7A
Authority: CN
Inventors: 赵文生; 张剑冰; 董智鼎; 李龙; 邱硕丰
Original assignee: 723 Research Institute of CSIC
Current assignee: 723 Research Institute of CSIC
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-07-20
Anticipated expiration: 2041-04-30
Also published as: CN113137548B

Abstract

The invention provides a quick leveling tripod, which comprises a base, three supporting legs and a leveling indicating device, wherein the base is used for mounting equipment, the base is of a symmetrical structure, suspension shafts are mounted on the central lines of three same symmetrical side surfaces vertical to a mounting surface, pointers indicating the leveling state of the mounting surface are suspended on the suspension shafts, an indicating scribed line is arranged below the pointers, and the extension line of the indicating scribed line passes through the center of the suspension shafts and is vertical to the mounting surface; each supporting leg comprises an outer rod, a middle rod and an inner rod, the relative positions of the middle rod and the inner rod are not adjustable after the middle rod and the inner rod are positioned through a limiting block, the middle rod is connected with a telescopic piece in a rotating and extruding mode through a locking handle to generate friction force with the telescopic piece, the middle rod and the outer rod can change between any positions, the length of the three supporting legs is changed through indication of a leveling indicating device, and the tripod is leveled. The invention has small size, light weight, large carrying capacity and convenient carrying after shrinkage, has simple equipment installation and leveling process, less adjusting position and short time, and is suitable for the field environment with large wind sand and low temperature.

Description

Quick leveling tripod

Technical Field

The invention relates to the structural technology of electronic equipment, in particular to a tripod which is used for installing a photoelectric instrument, has the precision not influenced by temperature and is suitable for field quick leveling.

Background

In the known three-section tripod, the three supporting legs need to be adjusted and locked at 6 positions in total, and the leveling time of the tripod erection is influenced. Under the restriction of certain weight and size, the carrying capacity is low, and the use requirement of equipment with large carrying capacity cannot be met. The safety and stability device needs to be additionally provided with a middle shaft passing through the center of the base to assist stability, and the center of the base cannot be directly used as an equipment fixing hole. Two tripod stands which can meet the requirements of load and erection height are large in size and inconvenient to carry. In addition, when some products are locked, the unit area of the locking handle is large in force, and the hand feeling is not comfortable. The sand blown by the wind on the upper part of the locking handle is easy to enter, the locking use performance and the service life are influenced, and if the sand blown by the wind is not cleaned in time, the next use can be influenced.

Disclosure of Invention

The invention aims to provide a quick leveling tripod.

The technical solution for realizing the purpose of the invention is as follows: a rapid leveling tripod comprising a base for mounting equipment, three support legs, a leveling indication device, wherein:

the base is of a symmetrical structure, suspension shafts are mounted on the center lines of three identical symmetrical side surfaces perpendicular to the mounting surface, pointers for indicating the leveling state of the mounting surface are suspended on the suspension shafts, indication scribed lines are arranged below the pointers, the extension lines of the indication scribed lines pass through the centers of the suspension shafts and are perpendicular to the mounting surface, and the pointing directions of the pointers and the indication scribed lines are overlapped in the leveling state;

each supporting leg comprises an outer rod, a middle rod and an inner rod, the relative positions of the middle rod and the inner rod are not adjustable after the middle rod and the inner rod are positioned through a limiting block, the middle rod is connected with a telescopic piece in a rotating and extruding mode through a locking handle to generate friction force with the telescopic piece, the middle rod and the outer rod can change between any positions, the length of the three supporting legs is changed through indication of a leveling indicating device, and the tripod is leveled.

Furthermore, the base is connected with a supporting piece through a rotating shaft, the supporting piece is embedded into an upper port of the outer rod, and the stop block is pushed by a spring to enter a hole of the outer rod and be connected with the outer rod into a whole.

Further, quick leveling tripod still includes safety and stability device, safety and stability device includes tee bend connecting piece and 3 connecting rods, and the leveling erects the back that targets in place, and the connecting rod will do all can the power transmission to the outer pole on, makes the support piece of dress in the outer pole upper end and the contact of base bottom to produce interact power, through the effort and the reaction force that support piece and base produced, ensure the stability of base.

Furthermore, a through hole is formed in the center of the three-way connecting piece, a non-through milling groove is formed in the three extending claws, circular through holes are formed in two sides of the inner side of the milling groove, counter bores are formed in the corresponding outer surface of the inner side of the milling groove, and the rotating angle range of the connecting rod around the axis of the through hole is 90 degrees.

Furthermore, a connecting telescopic piece, a first stop block, a stroke stop piece, a spring and an outer ring connecting piece are arranged on the middle rod, the connecting telescopic piece, the outer ring connecting piece and the outer rod are connected into a whole through screws, and the upper end of the locking handle extends into the inner diameter of the lower end of the outer ring connecting piece; the stroke stop piece is embedded into the upper port of the middle rod, the first stop block is pushed by a spring loaded on the stroke stop piece to enter the middle rod hole to be connected with the middle rod hole into a whole, and the middle rod is prevented from being separated from the outer rod by the stop of the connecting telescopic piece.

Furthermore, a second stop block, a check ring, a limiting block, a stop ring, a boss cylindrical stop block, a connecting limiting part, a first compression spring, a lantern ring, a top block and a second compression spring are arranged on the inner rod, wherein the limiting block, the top block, the second compression spring, the second stop block and the check ring are arranged on the connecting limiting part, 2 limiting blocks are pressed by hands, the limiting block retracts into the inner rod, the top block is pushed to move downwards after compressing the spring, the inner rod retracts into the middle rod at the moment, otherwise, when the inner rod is completely pulled out, the compression spring pushes the top block to move upwards, the top block pushes the limiting block to extend out of the inner rod, and the limiting purpose that the inner rod cannot retract into the middle rod is achieved;

the connecting limiting piece also pushes 2 boss cylindrical stop blocks to enter the inner rod hole through the first compression spring to be connected with the inner rod hole into a whole, and the inner rod is prevented from falling off from the middle rod through the blocking of the blocking ring and the limiting block is ensured to be automatically popped out after being in place;

the lantern ring is connected with the middle rod and the baffle ring into a whole through the rivet, and the purpose of preventing the limiting block from being completely separated from the inner rod is achieved except that the middle rod is prevented from being separated by the fixed baffle ring.

Furthermore, an O-shaped sealing ring is arranged on a connecting limiting piece connected with the inner rod into a whole and extruded between the groove of the connecting limiting piece and the surface of the inner diameter of the middle rod, so that the instability of the outer diameter of the inner rod and the inner diameter of the middle rod caused by fit clearance is reduced.

Furthermore, there is the chamfer at locking handle outside both ends, and the mid portion has evenly distributed a plurality of facets at the surface interval of excircle, and locking handle internal diameter both ends are the unthreaded hole of big or small different diameters and, and adjacent diameter is big unthreaded hole inside has the internal thread, and the internal thread other end has the unthreaded hole that is not less than the internal thread external diameter.

Further, the rapid leveling tripod further comprises universal support legs for uneven ground.

Furthermore, a transparent cover plate is further arranged on the leveling indicating device and used for preventing the pointer from falling off and protecting the pointer and the reticle from being influenced by rainwater.

Compared with the prior art, the invention has the following remarkable advantages: 1) after being contracted, the size is small, the weight is light, the carrying capacity is large, and the carrying is convenient. 2) The equipment is simple in installation and leveling process, few in adjustment position, short in time and suitable for the field environment with large wind sand and low temperature.

Drawings

Fig. 1 is a schematic view showing the external appearance of a tripod.

Fig. 2 is a schematic view of the tripod in principle.

Fig. 3 is a view from direction a of fig. 2.

Fig. 4 is a partial enlarged view F of fig. 2.

Fig. 5 is a partially enlarged view H of fig. 2, in which (a) is a front view and (b) is a left view.

Fig. 6 is a schematic structural view of the lock handle, in which (a) is a front view and (b) is a left side view.

FIG. 7 is a schematic view of the structure of the three-way connection.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in figure 1, the invention relates to a tripod capable of being quickly leveled, which comprises a base 1 for mounting equipment, three supporting legs 2, a leveling indicating device 3, a safety and stability device 4 and universal supporting feet 5. The mounting surface 1-1 of the base 1 is a regular hexagon, leveling indicating devices 3 are arranged on the three mutually spaced side surfaces, and the three side surfaces 1-2 are all perpendicular to the mounting surface 1-1 of the base 1.

As shown in FIG. 2, the supporting member 2-2 connected to the base 1 through the rotation shaft 2-1 is inserted into the upper end of the outer rod 4, and the stopper 2-3 is pushed by the spring 2-4 into the hole of the outer rod 6 and is integrally connected thereto.

As shown in figures 2 and 3, the leveling indicating device 3 comprises a suspension shaft 3-1 and a pointer 3-2, one end of the pointer 3-2 is provided with a suspension hole deviating from the gravity center, the side surface provided with the leveling indicating device 3 is provided with an indicating line 3-3 and a transparent cover plate 3-4, and the extension line of the indicating line 3-3 passes through the center of the suspension shaft 3-1 and is perpendicular to the mounting surface of the base 1. Due to the gravity of the earth, the pointing direction of the pointer 3-2 in the leveling state is necessarily vertical to the ground level. According to the related mathematical theorem, by adjusting the lengths of the three supporting legs 2, when two pointers 3-2 are observed to point to the indicating line 3-3, the tripod is indicated to be leveled, and at the moment, the other pointer 3-2 can also point to the indicating line 3-3 of the installation surface without observation.

As shown in fig. 2 and 4, the safety and stability device 4 includes a three-way connection 4-2 and a link 4-1, and an outer ring connection 7-6 is riveted by a rivet. When the three connecting rods and the plane of the upper part of the three-way connecting piece are parallel, the upper part of the riveting end of the connecting rod and the three-way connecting piece is contacted with the notch surface of the three-way connecting piece, and the three-way connecting piece stops descending. Meanwhile, according to design calculation, a tripod is installed on the equipment, after the equipment is leveled and erected in place, the connecting rod 4-1 transmits force to the supporting piece 2-2 installed at the upper end of the outer rod 6 through the outer ring connecting piece 7-6, the connecting telescopic piece 7-1, the locking handle 9 and the outer rod 6 in sequence, so that the connecting rod is contacted with the lower surface of the inner side of the bottom of the base 1 and generates certain interaction force, and the stability of the base 1 is ensured through multiple pairs of action force and reaction force generated by the supporting piece 2-2 and the base 1.

As shown in figure 4, the outer ring connecting piece 7-6, the connecting telescopic piece 7-1 and the outer rod 6 are connected into a whole through a screw 7-2. The stroke stop 7-4 is embedded in the upper port of the middle rod 7, pushes the stop 7-3 into the hole of the middle rod 7 by the spring 7-5 loaded on the stop and is connected into a whole, and prevents the middle rod 7 from being separated from the outer rod 6 by the stop of the connecting telescopic piece 7-1.

As shown in fig. 2 and 5, when the inner rod 8 is pulled to be in a working state, the limiting block 8-3 arranged on the inner rod 8 is automatically popped out, and after the middle rod 7 and the inner rod 8 are positioned through the limiting block 8-3, the relative positions are unique and cannot be adjusted.

As shown in figure 5, a connecting limiting part 8-6 provided with a limiting block 8-3, a top block 8-11, a compression spring 8-12, a stop block 8-1 and a retainer ring 8-2 pushes 2 boss cylindrical stop blocks 8-5 to enter the holes of the inner rod 8 and be connected into a whole through the compression spring 8-8, and the inner rod 8 is prevented from being separated from the middle rod 7 and is ensured to be automatically ejected out after the limiting block 8-3 is in place through the blocking of a retainer ring 8-4. And 2 limiting blocks 8-3 are pressed by hands, the limiting blocks 8-3 retract into the inner rod 8, meanwhile, the top blocks 8-11 are pushed to compress the springs 8-12 and move downwards, the inner rod 8 can retract into the middle rod 7 at the moment, otherwise, when the inner rod 8 is completely pulled out, the compression springs 8-12 push the top blocks 8-11 to move upwards, meanwhile, the top blocks 8-11 push the limiting blocks 8-3 to extend out of the inner rod 8, and the limiting purpose that the inner rod 8 cannot retract into the middle rod 7 is achieved.

An O-shaped sealing ring 8-7 is arranged on a connecting limiting piece 8-6 which is connected with the inner rod 8 into a whole and is extruded between a groove of the connecting limiting piece 8-6 and the inner diameter surface of the middle rod 7, so that the instability caused by the fit clearance between the outer diameter of the inner rod 8 and the inner diameter of the middle rod 7 is reduced.

The lantern rings 8-10 are connected into a whole through rivets 8-9 and the middle rod 7 and the baffle ring 8-4, and the purpose of preventing the limiting block 8-3 from being completely separated from the inner rod 8 is achieved except that the middle rod 7 is prevented from being separated by fixing the baffle ring 8-4.

As shown in figure 6, chamfers 9-3 are arranged at two ends of the outer part of a locking handle 9, a plurality of small planes 9-5 are uniformly distributed at intervals on the surface of the outer circle of the middle part, two ends of the inner diameter of the locking handle are unthreaded holes 9-2 and 9-6 with different diameters, internal threads 9-1 are arranged in the unthreaded holes 9-6 with the adjacent diameters, and unthreaded holes 9-4 with the diameter not smaller than the external diameter of the internal threads are arranged at the other ends of the internal threads. The locking handle increases the friction coefficient and the contact area of the hand and the locking handle by milling a plurality of symmetrical small planes outside, and reduces the force value per unit area during locking and the discomfort of the hand of an operator during force application. In addition, during stretching into outer loop connecting piece lower extreme internal diameter with locking handle upper end, can effectively prevent or reduce the sand blown by the wind and get into inside the locking handle and cause the locking force increase or to the damage of locking handle internal thread and retaining member external screw thread.

As shown in figures 1 and 7, the center of the three-way connecting piece 4-2 is provided with a through hole 4-2-1, three claws extending out are provided with blind milling grooves, two sides of the inner side of each milling groove are provided with circular through holes 4-2-3, and the corresponding outer surface of the inner side is provided with counter bores 4-2-4. When the planes of the three connecting rods 4-1 and the upper part of the three-way connecting piece 4-2 are parallel, the upper part of the riveting end of the connecting rod 4-1 is contacted with the notch surface 4-2-2 of the three-way connecting piece 4-2, and the three-way connecting piece 4-2 stops descending.

In conclusion, in the tripod capable of being quickly leveled, the inner rod is sleeved in the middle rod, the middle rod is sleeved in the outer rod, the limiting blocks arranged on the inner rod are automatically popped out when the inner rod is pulled to be in a working state in the process of erecting the tripod, the relative positions of the middle rod and the inner rod are unique and cannot be adjusted after the middle rod and the inner rod are positioned through the limiting blocks, the middle rod is rotatably extruded and connected with the telescopic part through the locking handle to generate deformation friction pressure so as to realize the limiting of any position between the middle rod and the outer rod, and the purpose of shortening the time for erecting and leveling the tripod on uneven ground is achieved by changing the lengths of the three supporting legs under the indication of the pointer. The rapid leveling tripod has the advantages of small size, light weight, large load capacity after being contracted, simple equipment installation and leveling process, short time, suitability for the field environment with large wind sand, low temperature and convenient carrying.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A rapid levelling tripod, comprising a base (1) for mounting equipment, three support legs (2), a levelling indicating device (3), wherein:

the base (1) is of a symmetrical structure, a suspension shaft (3-1) is mounted on the center line of three identical symmetrical side surfaces (1-2) perpendicular to the mounting surface (1-1), a pointer (3-2) for indicating the leveling state of the mounting surface is suspended on the suspension shaft (3-1), an indicating scale line (3-3) is arranged below the pointer (3-2), the extension line of the indicating scale line (3-3) passes through the center of the suspension shaft (3-1) and is perpendicular to the mounting surface (1-1), and the pointing direction of the pointer (3-2) is overlapped with the indicating scale line (3-3) in the leveling state;

each supporting leg (2) comprises an outer rod (6), a middle rod (7) and an inner rod (8), the relative positions of the middle rod (7) and the inner rod (8) are not adjustable after being positioned through a limiting block (8-3), the middle rod (7) is connected with a telescopic piece (7-1) in a rotating extrusion mode through a locking handle (9) to generate friction force, the change between the middle rod and any position of the outer rod (6) is achieved, the length of the three supporting legs (2) is changed through indication of a leveling indicating device (3), and the tripod is leveled.

2. Fast leveling tripod according to claim 1, characterized in that said base (1) is connected to a support (2-2) by means of a rotating shaft (2-1), said support (2-2) being inserted in the upper port of the outer stem (6) and being connected integrally by means of a spring (2-4) pushing a stop (2-3) into the outer stem (6) hole.

3. A rapid levelling tripod according to claim 1 further comprising a safety and stability device (4), wherein the safety and stability device (4) comprises a three-way connection (4-2) and 3 connecting rods (4-1), and after the levelling frame is erected in place, the connecting rods (4-1) transmit force to the outer rod (6), so that the supporting member (2-2) arranged at the upper end of the outer rod (6) is contacted with the bottom of the base (1) and generates interaction force, and the stability of the base (1) is ensured by the action force and the reaction force generated by the supporting member (2-2) and the base (1).

4. The rapid leveling tripod according to claim 3, wherein the center of the three-way connecting piece (4-2) is provided with a through hole (4-2-1), the three claws extend out of the through hole and are provided with blind milling grooves (4-2-2), two sides of the inner side of each milling groove (4-2-2) are provided with circular through holes (4-2-3), the corresponding outer surface of the inner side is provided with counter bores (4-2-4), and the rotating angle range of the connecting rod (4-1) around the axis of the through hole (4-2-3) is 90 degrees.

5. The rapid leveling tripod according to claim 1, wherein a connecting telescopic piece (7-1), a first stop block (7-3), a stroke stop piece (7-4), a spring (7-5) and an outer ring connecting piece (7-6) are arranged on the middle rod (7), the connecting telescopic piece (7-1), the outer ring connecting piece (7-6) and the outer rod (6) are connected into a whole through a screw (7-2), and the upper end of a locking handle (9) extends into the inner diameter of the lower end of the outer ring connecting piece (7-6); the stroke blocking piece (7-4) is embedded into the upper port of the middle rod (7), the first blocking piece (7-3) is pushed to enter the hole of the middle rod (7) through the spring (7-5) arranged on the stroke blocking piece to be connected into a whole, and the middle rod (7) is prevented from being separated from the outer rod (6) through the blocking of the connecting telescopic piece (7-1).

6. The rapid leveling tripod according to claim 1, wherein the inner rod (8) is provided with a second stopper (8-1), a retainer ring (8-2), a stopper (8-3), a retainer ring (8-4), a boss cylindrical stopper (8-5), a connecting stopper (8-6), a first compression spring (8-8), a collar (8-10), a top block (8-11) and a second compression spring (8-12), wherein the connecting stopper (8-6) is provided with the stopper (8-3), the top block (8-11), the second compression spring (8-12), the second stopper (8-1) and the retainer ring (8-2), 2 stoppers (8-3) are pressed by hands, and the inner rod (8-3) retracts into the retainer ring (8), meanwhile, the ejector blocks (8-11) are pushed to compress the springs (8-12) and then move downwards, the inner rod (8) retracts into the middle rod (7), otherwise, when the inner rod (8) is completely pulled out, the compression springs (8-12) push the ejector blocks (8-11) to move upwards, and meanwhile, the ejector blocks (8-11) push the limiting blocks (8-3) to extend out of the inner rod (8), so that the limiting purpose that the inner rod (8) cannot retract into the middle rod (7) is achieved;

the connecting limiting piece (8-6) also pushes 2 boss cylindrical stop blocks (8-5) to enter the hole of the inner rod (8) through the first compression spring (8-8) to be connected into a whole, and the inner rod (8) is prevented from being separated from the middle rod (7) and the limiting block (8-3) is ensured to be automatically ejected after being in place through the blocking of the blocking ring (8-4);

the lantern rings (8-10) are connected with the middle rod (7) and the baffle rings (8-4) into a whole through rivets (8-9), and the purpose of preventing the limiting blocks (8-3) from being completely separated from the inner rod (8) is achieved except that the middle rod (7) is prevented from being separated by the fixed baffle rings (8-4).

7. A rapid levelling tripod according to claim 6 wherein the connection limiter (8-6) integral with the inner rod (8) is fitted with O-rings (8-7) which squeeze between the groove of the connection limiter (8-6) and the inner diameter surface of the middle rod (7) to reduce the instability of the outer diameter of the inner rod (8) and the inner diameter of the middle rod (7) due to the fit clearance.

8. A rapid leveling tripod according to claim 1, wherein the locking handle (9) is provided with chamfers (9-3) at two outer ends, a plurality of small planes (9-5) are uniformly distributed on the outer circumferential surface of the middle part at intervals, the two inner ends of the locking handle are unthreaded holes (9-2) and (9-6) with different diameters, an internal thread (9-1) is arranged inside the unthreaded hole (9-6) with a large adjacent diameter, and the other end of the internal thread is provided with an unthreaded hole (9-4) with a diameter not less than the external diameter of the internal thread.