CN116592240A - Heavy supporting leg and heavy supporting foot rest - Google Patents

Abstract

The application relates to a heavy supporting leg and a heavy supporting foot stool with the same. The heavy supporting leg comprises a main supporting leg and an auxiliary supporting leg of the double-pipe body, the auxiliary supporting leg is movably arranged on the main supporting leg, the auxiliary supporting leg comprises a first supporting leg and a second supporting leg, locking parts are arranged at two ends of the main supporting leg along the axial direction, and the two locking parts respectively limit the first supporting leg and the second supporting leg to move along the axial direction of the main supporting leg; the locking part comprises a mounting seat and a locking structure, the locking structure can move along the radial direction of the main support leg, the heavy support leg is provided with a traction wire, the traction wire is connected with the two locking parts, and the two locking structures are linked through the traction wire, so that the two locking structures are simultaneously switched between an unlocking state and a locking state. The heavy supporting leg is provided with two calandria, has improved intensity and stability, can bear heavier shooting equipment, and a plurality of locking portion linkage realize a key locking or unblock, need not separate locking or unblock, convenient operation, and vice landing leg can be whole accomodate in the main supporting leg, easily accomodate and carry.

Description

Heavy supporting leg and heavy supporting foot rest

Technical Field

The application relates to the technical field of photographic accessories, in particular to a heavy supporting leg and a heavy supporting foot rest.

Background

Tripod is used as a common photographic accessory and is increasingly widely used in daily life. The tripod can play the effect of steady support to the shooting equipment who installs on it. However, the conventional tripod has two problems: each supporting leg is a single tube body, has poor stability and strength and short service life, and cannot be provided with heavier shooting equipment; the supporting leg includes a plurality of locking structures, and the user needs to open in proper order or lock a plurality of locking structures and just can realize opening or accomodating of supporting leg, and complex operation, and needs bending over many times or squatting down, uses and experiences to feel poor.

For example, CN217976909U discloses a connection structure for a multi-section tube and a support leg for a stand, the support leg comprising two or more tube bodies, a connection structure being provided between two adjacent tube bodies, the connection structure being capable of locking or unlocking the relative movement of the two adjacent tube bodies. In the technical scheme, the supporting legs are single tubes, the stability and the strength are poor, the service life is short, and heavier shooting equipment cannot be installed; simultaneously, the supporting leg is provided with a plurality of connection structures, and the supporting leg can be opened or stored only by opening or locking the plurality of connection structures in sequence, so that the operation is complex, and the use experience is poor.

Disclosure of Invention

The application provides a heavy supporting leg and a heavy supporting foot stool, which are used for solving the problems that the stability and strength of a traditional tripod are poor, a user needs to sequentially open or lock a plurality of locking structures when opening or accommodating the tripod, the operation is complex, and the experience is poor.

In order to solve the technical problems, the application adopts the following technical scheme:

a heavy duty support leg comprising:

the main support leg comprises two main pipe bodies arranged side by side and locking parts connected with the two main pipe bodies, wherein the number of the locking parts is two, and the two locking parts are positioned at two axial ends of the main support leg;

the auxiliary supporting leg comprises a first supporting leg and a second supporting leg, wherein the first supporting leg and the second supporting leg both comprise two auxiliary pipe bodies which are arranged side by side and connected, the auxiliary pipe body of the first supporting leg is movably arranged in one end of the main pipe body along the axial direction, and the auxiliary pipe body of the second supporting leg is movably arranged in the other end of the main pipe body along the axial direction;

the locking part comprises an installation seat and a locking structure, wherein the installation seat is simultaneously connected with the two main pipe bodies, and the locking structure is movably arranged on the installation seat along the radial direction of the main leg; the heavy supporting leg further comprises a traction wire connected with the locking structures, and a single traction wire can be pulled and put to enable two locking structures in the two locking parts to be linked and simultaneously switch between an unlocking state and a locking state; in an unlocked state, the first leg and the second leg are movable relative to the main leg; and in a locking state, the first supporting leg and the second supporting leg are axially limited relative to the main supporting leg.

In one embodiment, the locking portion comprises a winding structure, the winding structure can change the axial extension direction of the traction wire, the locking structure comprises a first locking piece and a second locking piece, the first locking piece and the second locking piece are arranged at two ends of the locking portion along the radial direction of the main leg, the traction wire is connected with the first locking piece and then is folded back through the winding structure to be connected with the second locking piece, and the traction wire can be pulled to drive the first locking piece and the second locking piece to be respectively in radial butt or release butt in the corresponding auxiliary pipe body along the main leg.

In one embodiment, the first locking block comprises a first abutting block and a first sliding block connected with the traction wire, one end of the first abutting block away from the first sliding block can abut against the corresponding auxiliary pipe body, the second locking block comprises a second abutting block and a second sliding block connected with the traction wire, and one end of the second abutting block away from the second sliding block can abut against the corresponding auxiliary pipe body;

the single traction wire can be pulled to drive the first sliding block and the second sliding block to simultaneously push the first abutting block and the second abutting block to move along the radial direction of the main leg.

In one embodiment, the first locking piece is provided with a first inclined plane, the first inclined plane is arranged on at least one of the first sliding block and the first abutting block, the extending direction of the first inclined plane is arranged at an included angle with the moving direction of the first sliding block, and when the first sliding block moves along the axial direction of the main supporting leg, the first sliding block can drive the first abutting block to move along the radial direction of the main supporting leg through the first inclined plane; the second lock block is provided with a second inclined plane, the second inclined plane is arranged on at least one of the second slide block and the second abutting block, the extending direction of the second inclined plane and the moving direction of the second slide block are arranged at an included angle, and when the second slide block moves along the axial direction of the main support leg, the second slide block can drive the second abutting block to move along the radial direction of the main support leg through the second inclined plane.

In one embodiment, the locking portion includes a first elastic member and a second elastic member, two ends of the first elastic member along the axial direction of the main leg are respectively connected with the mounting seat and the first slider, two ends of the second elastic member along the axial direction of the main leg are respectively connected with the mounting seat and the second slider, and in a locking state, a single pulling wire can be pulled to drive the first slider and the second slider to simultaneously overcome the elastic force of the first elastic member and the elastic force of the second elastic member and move along the axial direction of the main leg; and in an unlocking state, the first elastic piece and the second elastic piece release elastic force simultaneously and drive the first sliding block and the second sliding block to move along the axial direction of the main support leg respectively.

In one embodiment, the pulling wire is provided with a first pushing block and a second pushing block, the second pushing block is abutted to the first sliding block, the second pushing block is abutted to the second sliding block, and when the pulling wire is pulled, the first pushing block and the second pushing block drive the first sliding block and the second sliding block to move along the axial direction of the main leg at the same time.

In one embodiment, the heavy supporting leg further comprises a spool, two mounting seats are respectively connected to two opposite ends of the spool, and the traction wire is arranged through the spool and can move along the axial direction of the spool.

In one embodiment, the heavy supporting leg comprises a driving part, the driving part comprises a wrench and a hollow connecting cylinder, the connecting cylinder is connected with the wrench, the traction wire is connected with the connecting cylinder, the wrench is rotationally connected with the mounting seat, and the wrench can rotate relative to the mounting seat to drive the connecting cylinder to rotate so that the traction wire is pulled and put.

In one embodiment, the second support leg is movably sleeved on the inner side of the first support leg, and in the storage state, the second support leg is sleeved on the inner side of the first support leg, and the first support leg is sleeved on the inner side of the main support leg.

The application also provides a heavy-duty support foot rest, comprising:

a base;

the heavy supporting legs are rotatably connected to the base body to realize the opening and closing of the heavy supporting foot rest.

As can be seen from the technical scheme, the embodiment of the application has at least the following advantages and positive effects:

compared with the traditional single-tube support leg, the double-row tubular heavy support leg has stronger stability and support strength and can bear heavier shooting equipment; the first supporting leg and the second supporting leg can be simultaneously contained in the main supporting leg, so that the main supporting leg is convenient to contain and carry; the multiple locking parts can be linked to realize one-key locking or unlocking, and meanwhile, the structure of the traction wire for simultaneously locking or unlocking the double calandria is simpler and more compact than that of the traditional screw transmission locking, so that the problems that the structure of the transmission assembly of the traditional linkage locking is complex and the transmission assembly is easy to damage due to long-term abrasion are solved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a heavy-duty support leg according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of the heavy-duty support leg of FIG. 1 taken along section line A-A;

FIG. 3 is a schematic view of a partial explosion of the heavy support leg of FIG. 1;

fig. 4 is an enlarged partial view of a sectional area B shown in fig. 2;

FIG. 5 is a schematic view of an exploded construction of the drive section and the puller wire of FIG. 1;

fig. 6 is a schematic view of the overall structure of a heavy-duty support stand according to an embodiment of the present application.

The reference numerals are explained as follows:

10. heavy support legs; 20. heavy support foot rest;

100. a main leg; 200. a first leg; 300. a second leg; 400. an auxiliary pipe body; 500. a pulling wire; 600. a driving section; 700. a base; 800. a center shaft;

110. a main pipe body; 120. a locking part; 121. a mounting base; 122. an upper base; 123. a lower base; 124. a winding structure; 124a, a first winding post; 124b, a second winding post; 125. a locking structure; 126. a first locking piece; 126a, a first slider; 126b, a first abutment block; 126c, a first incline; 127. a second locking piece; 127a, a second slider; 127b, a second abutment block; 127c, a second bevel; 128. a first elastic member; 129. a second elastic member; 210. an adapter; 310. a support base; 510. a conduit; 520. a first push block; 530. a second push block; 540. a limiting block; 610. a wrench; 611. a threaded hole; 620. and a connecting cylinder.

Detailed Description

Exemplary embodiments that embody features and advantages of the present application will be described in detail in the following description. It will be understood that the application is capable of various modifications in various embodiments, all without departing from the scope of the application, and that the description and illustrations herein are intended to be by way of illustration only and not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

First embodiment

Referring to fig. 1, the present application provides a heavy-duty support leg 10, the heavy-duty support leg 10 serving as a core component of a heavy-duty support foot stand. Specifically, the user can use single or a plurality of heavy supporting leg 10 and connection structure to assemble into heavy supporting foot rest, then install shooting equipment on heavy supporting foot rest and shoot, and heavy supporting foot rest can play the stabilization to shooting equipment to prevent shooting equipment because rocking influences shooting quality when shooing, the user can also adjust the different supporting angle of heavy supporting foot rest according to the user demand, in order to reach better shooting effect. The shooting equipment comprises, but is not limited to, a camera, a mobile phone, a tablet computer and a video camera.

The heavy support leg 10 includes a main leg 100 and a secondary leg including a first leg 200 and a second leg 300, the first leg 200 being axially movable within an end of the main leg 100 and the second leg 300 being axially movable within an end of the main leg 100 remote from the first leg 200. The movable arrangement of the first leg 200 and the second leg 300 enables the heavy support leg 10 to be extended and shortened along the axial direction, and when a user uses the heavy support foot stool formed by the heavy support legs 10, the height of the heavy support foot stool can be adjusted by adjusting the telescopic length of the heavy support leg 10 so as to meet the shooting height requirements of different use occasions.

The main support leg 100 comprises two main pipe bodies 110 arranged side by side, the first support leg 200 comprises a connecting seat 210 and two auxiliary pipe bodies 400 arranged side by side, two opposite ends of the connecting seat 210 are respectively connected with the two auxiliary pipe bodies 400 of the first support leg 200, and the connecting seat 210 can also be used for installing the heavy support leg 10 on a seat body of a heavy support foot stand; the second supporting leg 300 comprises a supporting seat 310 and two auxiliary pipe bodies 400 which are arranged side by side, two opposite ends of the supporting seat 310 are respectively connected with the two auxiliary pipe bodies 400 of the second supporting leg 300, and the supporting seat 310 can be placed on a flat or uneven ground so that the support of the heavy supporting foot rest is more stable. The two auxiliary pipe bodies 400 of the first leg 200 are respectively and axially movably disposed in one ends of the two main pipe bodies 110, and the two auxiliary pipe bodies 400 of the second leg 300 are respectively and axially movably disposed in one ends of the two main pipe bodies 110 away from the first leg 200. Compared with the traditional single-tube support leg, the heavy support leg 10 is of a double-tube structure, the structural strength and stability of the heavy support leg 10 are improved, and the heavy support leg 10 can bear heavier shooting equipment.

Referring to fig. 2, in an embodiment, the second leg 300 is movably disposed inside the first leg 200, and in the storage state, two sub-tubes 400 of the second leg 300 are stored in two sub-tubes 400 corresponding to the first leg 200, and two sub-tubes 400 of the first leg 200 are stored in two main tubes 110 corresponding to the main leg 100. The multi-inner tube body sleeving structure design of the heavy support leg 10 can fully utilize the storage space in the main tube body 110, and avoid the problem that interference is generated when the first support leg 200 and the second support leg 300 are stored in the main tube body 110 when the radial dimensions are the same. It should be understood that in other embodiments, the second leg 300 may be movably disposed outside the first leg 200, and in the storage state, the first leg 200 is stored in the second leg 300, and the second leg 300 is stored in the main leg 100.

It should be understood that, when the maximum utilization of the inner space of the main body 110 is not considered, the radial dimension of the sub-body 400 of the first leg 200 may be set to be the same as the radial dimension of the sub-body 400 of the second leg 300, and the sum of the axial dimension of the first leg 200 received in the main leg 100 and the axial dimension of the second leg 300 received in the main leg 100 is smaller than the axial dimension of the receiving space of the main leg 100.

With continued reference to fig. 2, the main leg 100 includes two locking portions 120, where the two locking portions 120 are respectively disposed at two axial ends of the main leg 100, one of the two locking portions 120 is capable of limiting axial movement of the first leg 200 relative to the main leg 100, and the other is capable of limiting axial movement of the second leg 300 relative to the main leg 100. Fig. 3 illustrates that the locking part 120 includes a mounting seat 121 and a locking structure 125, the mounting seat 121 connects two main pipe bodies 110 along both ends of the radial direction of the main leg 100, and the locking structure 125 is provided in the mounting seat 121 and is movable along the radial direction of the main leg 100. When the locking structures 125 of the two locking portions 120 move along the radial direction of the main leg 100 and abut against the corresponding auxiliary pipe body 400, the first leg 200 and the second leg 300 are both axially limited with respect to the main leg 100, and the heavy supporting leg 10 is in a locked state; when the locking structures 125 of the two locking portions 120 move along the radial direction of the main leg 100 and are released from abutting against the corresponding auxiliary pipe body 400, the first leg 200 and the second leg 300 can both move axially relative to the main leg 100, and the heavy supporting leg 10 is in the unlocked state. The provision of the double locking portion 120 enables the heavy-duty support leg 10 to be locked and unlocked in any length within a telescopic range.

With continued reference to fig. 2, the heavy-duty support leg 10 includes a pulling wire 500, and both axial ends of the pulling wire 500 are respectively connected to the locking structures 125 of the two locking parts 120, and the pulling wire 500 can be pulled and released to allow the two locking structures 125 of the two locking parts 120 to be interlocked and simultaneously switched between the locked state and the unlocked state, so that a user can achieve one-key locking or one-key unlocking of the heavy-duty support leg 10 by pulling and releasing the pulling wire 500. CN217976909U discloses a supporting leg of multisection pipe, the supporting leg includes two or more body that overlap each other establishes, be equipped with connection structure between two adjacent body, the user need open in proper order or lock a plurality of connection structure and just can realize opening or accomodating of supporting leg when locking or unblock, the heavy supporting leg that the application provided can realize locking of a key or unblock through the pull line 500 compared with the supporting leg of this multisection pipe, the operation step is few, need not frequently bow, the experience is better in use. It should be understood that the number of the pull wires 500 may be one or may be a plurality of pull wires arranged side by side, and the specific number of the pull wires 500 is not limited in the present application.

Specifically, in one embodiment, the pull wire 500 is a steel wire, which is a common pull wire that has the advantages of wear and corrosion resistance, while being inexpensive in terms of materials. It should be appreciated that in other implementations, the pull wire 500 may be nylon wire, carbon fiber wire, or the like, regardless of wear and corrosion resistance.

In an embodiment, the heavy support 10 further includes a hollow conduit 510, two ends of the conduit 510 in the axial direction are respectively connected with two mounting seats 121 of two locking portions 120, the pull wire 500 is disposed through the conduit 510 and can move along the axial direction of the conduit 510, the conduit 510 can protect the pull wire 500, the pull wire 500 is prevented from being exposed and worn or corroded to reduce the service life of the pull wire 500, and meanwhile unlocking caused by mistaken touching of the pull wire 500 in the working state can be prevented, so that normal use of the heavy support leg 10 is affected. It should be appreciated that in other embodiments, the heavy-duty support leg 10 may not be provided with the conduit 510 without regard to the protective effect of the pull wire 500.

Referring to fig. 3, in an embodiment, the mounting seat 121 includes an upper seat 122 and a lower seat 123, the upper seat 122 is detachably connected with the lower seat 123, at least one of the upper seat 122 and the lower seat 123 is provided with a winding structure 124, the locking structure 125 includes a first locking block 126 and a second locking block 127, the first locking block 126 and the second locking block 127 are respectively disposed at two ends of the mounting seat 121 along the radial direction of the main leg 100, the pulling wire 500 is connected with the first locking block 126 and then is turned back by the winding structure 124 and then is connected with the second locking block 127, fig. 4 illustrates that the pulling wire 500 can simultaneously drive the first locking block 126 and the second locking block 127 to respectively abut against the corresponding auxiliary pipe 400 when being pulled, and the moving direction of the first locking block 126 along the radial direction of the main leg 100 and the moving direction of the second locking block 127 along the radial direction of the main leg 100 are opposite. When the pulling wire 500 moves in the opposite direction to that during pulling, the abutment of the first lock piece 126 and the second lock piece 127 against the corresponding sub-pipe 400 can be simultaneously released. It should be understood that in other embodiments, the upper base 122 may be fixedly connected to the lower base 123, and the upper base 122 and the lower base 123 may be integrally formed, and the connection structure between the upper base 122 and the lower base 123 is not limited in any way.

Specifically, in one embodiment, the winding structure 124 includes a first winding post 124a and a second winding post 124b, and the pull wire 500 is connected to the first locking piece 126 and then sequentially passes through the first winding post 124a and the second winding post 124b and then is connected to the second locking piece 127. It should be understood that, in other embodiments, the winding structure 124 may be an arc-shaped protrusion, an arc-shaped slot, etc., and the specific structure of the winding structure 124 is not limited in the present application, so long as the winding structure 124 capable of changing the axial extension direction of the pull wire 500 is within the scope of the present application.

Referring to fig. 3, the first lock block 126 includes a first slider 126a and a first abutment block 126b, the first slider 126a is connected to the pulling wire 500, and a side of the first abutment block 126b facing away from the first slider 126a can abut against the corresponding sub-pipe 400; the second locking block 127 includes a second slider 127a and a second abutment block 127b, the second slider 127a is connected to the pulling wire 500, and a side of the second abutment block 127b facing away from the second slider 127a can abut against the corresponding sub-pipe 400. When the pulling wire 500 is pulled while driving the first slider 126a and the second slider 127a to move along the axial direction of the main leg 100, the first slider 126a and the second slider 127a simultaneously push the first abutment block 126b and the second abutment block 127b to abut the corresponding sub-tube 400, respectively, so that the first leg 200 and the second leg 300 are simultaneously switched from the unlocked state to the locked state. When the pull wire 500 is moved in the opposite direction as when pulled, the first and second legs 200, 300 switch from the locked state to the unlocked state.

Specifically, in one embodiment, one of the first slider 126a and the first abutment block 126b is provided with a first inclined surface 126c, and the other is provided as an outer side wall parallel to the axial direction of the main leg 100, and the extending direction of the first inclined surface 126c is disposed at an angle with the axial direction of the main leg 100, when the first slider 126a moves along the axial direction of the main leg 100, the first slider 126a can drive the first abutment block 126b to move along the radial direction of the main leg 100 to abut or release from abutting against the corresponding secondary pipe 400 through the first inclined surface 126 c. One of the second slider 127a and the second abutment block 127b is provided with a second inclined surface 127c, and the other is provided with an outer side wall axially parallel to the main leg 100, and the second inclined surface 127c functions similarly to the first inclined surface 126c and will not be described in detail herein.

Referring to fig. 3, in an embodiment, the first slider 126 is provided with two first inclined planes 126c, the two first inclined planes 126c are respectively provided on the first slider 126a and the first abutting block 126b, fig. 4 illustrates that the extending directions of the two first inclined planes 126c are opposite and keep the continuous abutting state, and when the first slider 126a moves along the axial direction of the main leg 100, the first slider 126a can drive the first abutting block 126b to move along the radial direction of the main leg 100 through the two first inclined planes 126c, and compared with the previous first slider 126 only provided with a single first inclined plane 126c, the first slider 126 is provided with two continuous abutting first inclined planes 126c so that the first slider 126a can drive the first abutting block 126b more easily, thereby achieving the effect of saving labor. The second slider 127 is provided with two second inclined surfaces 127c, and the specific positions and functions of the two second inclined surfaces 127c are similar to those of the two first inclined surfaces 126c, and will not be described in detail.

Referring to fig. 4, the locking part 120 includes a first elastic member 128 and a second elastic member 129, both ends of the first elastic member 128 in the axial direction are respectively connected to the mounting seat 121 and the first slider 126a, and both ends of the second elastic member 129 in the axial direction are respectively connected to the mounting seat 121 and the second slider 127a. In the locked state, the pulling wire 500 is pulled to drive the first slider 126a and the second slider 127a to move along the axial direction of the main leg 100 respectively against the elastic force of the first elastic member 128 and the elastic force of the second elastic member 129, and at this time, the first elastic member 128 and the second elastic member 129 store the elastic force due to deformation; in the unlocked state, the pulling wire 500 moves in the opposite direction to the pulled direction, so as to drive the first slider 126a and the second slider 127a to move axially along the main leg 100, and simultaneously the first elastic member 128 and the second elastic member 129 release the elastic force, and simultaneously drive the first slider 126a and the second slider 127a to move axially along the main leg 100, respectively.

Referring to fig. 3 and fig. 4 in combination, in an embodiment, the pull wire 500 is provided with a first push block 520 and a second push block 530, the first push block 520 is abutted against the first slider 126a, the second push block 530 is abutted against the second slider 127a, and when the pull wire 500 is pulled and released, the first push block 520 and the second push block 530 simultaneously drive the first slider 126a and the second slider 127a to move along the axial direction of the main leg 100, and the push block is abutted against the first push block to drive the slider to move, so that abrasion caused by friction between the pull wire 500 and the first slider 126a and the second slider 127a can be effectively reduced. It should be appreciated that in other embodiments, the pull wire 500 may not include the first push block 520 and the second push block 530, and the pull wire 500 is fixedly connected to the first slider 126a and the second slider 127a.

Referring to fig. 3, in an embodiment, the heavy-duty support leg 10 further includes a driving part 600, the driving part 600 is rotatably connected with the mounting seat 121, the driving part 600 is connected with the pulling wire 500, and a user can control the heavy-duty support leg 10 to switch between a locked state and an unlocked state by pulling the driving part 600, it should be understood that in other embodiments, the driving part 600 may not be provided for the heavy-duty support leg 10 regardless of convenience of operation and effort, and the user can achieve one-key locking or unlocking of the heavy-duty support leg 10 by directly pulling or releasing the pulling wire 500.

Specifically, referring to fig. 5, in an embodiment, the driving portion 600 includes a wrench 610 and a hollow connection cylinder 620, the wrench 610 is provided with a threaded hole 611, the outer side wall of the connection cylinder 620 is provided with threads, the pull wire 500 is threaded through the hollow connection cylinder 620, the connection cylinder 620 is in threaded connection with the threaded hole 611 so that the pull wire 500 is connected with the driving portion 600, the pull wire 500 is provided with a limiting block 540, and the limiting block 540 abuts against a step surface inside the connection cylinder 620 to prevent the pull wire 500 from being separated from the connection cylinder 620.

Second embodiment

Referring to fig. 6, the present application further provides a heavy support stand 20, wherein the heavy support stand 20 includes a plurality of heavy support legs 10 and a base 700, the plurality of heavy support legs 10 are rotatably connected to the base 700 and are arranged at intervals along the circumference of the base 700, the heavy support legs 10 can rotate relative to the base 700 under the action of external force to be unfolded to form a tripod structure, and the base 700 is used for installing photographing equipment. The user can adjust the photographing height and photographing angle of the photographing apparatus using the heavy-duty support stand 20 at the time of photographing to achieve a better photographing effect. After shooting is completed, the user can detach the shooting device from the base 700 and then fold the heavy supporting legs 10, so that the size in the storage state is smaller, and the portable shooting device is convenient to carry.

Referring to fig. 6, in an embodiment, the heavy support stand 20 further includes a central shaft 800, the central shaft 800 is movably connected with the base 700, the central shaft 800 can move relative to the base 700 along an axial direction, one end of the central shaft 800 away from the heavy support leg 10 is provided with an adapter structure, and the adapter structure can be externally connected with photographing equipment. After the heavy support legs 10 are fixed, the user can control the center shaft 800 to move in the axial direction with respect to the base 700 to adjust the photographing height of the photographing apparatus, which is more convenient and stable than controlling the photographing height of the photographing apparatus through the extension and retraction of the heavy support legs 10. When the photographing height adjustable range is equal, because the photographing height can be adjusted by the center shaft 800, the required axial dimension of the heavy supporting leg 10 is smaller, the structure of the heavy supporting foot stand 20 is more compact in the storage state, the whole occupied space is smaller, and the carrying is convenient. It should be appreciated that in other embodiments, the heavy support stand 20 may not be provided with the central axle 800, regardless of compactness and portability.

While the application has been described with reference to several exemplary embodiments, it is to be understood that the terminology used is intended to be in the nature of words of description and of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A heavy-duty support leg, comprising:

the main leg (100) comprises two main pipe bodies (110) which are arranged side by side, and locking parts (120) connected with the two main pipe bodies (110), wherein the number of the locking parts (120) is two, and the two locking parts (120) are positioned at two axial ends of the main leg (100);

the auxiliary support leg comprises a first support leg (200) and a second support leg (300), wherein the first support leg (200) and the second support leg (300) comprise two auxiliary pipe bodies (400) which are arranged side by side and connected, the auxiliary pipe bodies (400) of the first support leg (200) are axially movably arranged in one end of the main pipe body (110), and the auxiliary pipe bodies (400) of the second support leg (300) are axially movably arranged in the other end of the main pipe body (110);

the locking part (120) comprises an installation seat (121) and a locking structure (125), wherein the installation seat (121) is simultaneously connected with the two main pipe bodies (110), and the locking structure (125) is movably arranged on the installation seat (121) along the radial direction of the main leg (100); the heavy support leg (10) further comprises a pulling wire (500) connected with the locking structures (125), and a single pulling wire (500) can be pulled and put to enable the two locking structures (125) in the two locking parts (120) to be linked and simultaneously switch between an unlocking state and a locking state; in an unlocked state, the first leg (200) and the second leg (300) are movable relative to the main leg (100); in the locked state, the first leg (200) and the second leg (300) are both axially restrained relative to the main leg (100).

2. The heavy support leg according to claim 1, wherein the locking portion (120) comprises a winding structure (124), the winding structure (124) can change the axial extension direction of the pulling wire (500), the locking structure (125) comprises a first locking piece (126) and a second locking piece (127), the first locking piece (126) and the second locking piece (127) are arranged at two ends of the locking portion (120) along the radial direction of the main support leg (100), the pulling wire (500) is connected with the first locking piece (126) in a folded mode through the winding structure (124) and is connected with the second locking piece (127), and a single pulling wire (500) can be pulled to simultaneously drive the first locking piece (126) and the second locking piece (127) to be respectively abutted or untouched with the corresponding auxiliary tube (400) along the radial direction of the main support leg (100).

3. The heavy-duty support leg of claim 2, wherein the first lock block (126) includes a first abutment block (126 b) and a first slider (126 a) connected to the pull wire (500), an end of the first abutment block (126 b) remote from the first slider (126 a) being abuttable to the corresponding secondary pipe (400), the second lock block (127) includes a second abutment block (127 b) and a second slider (127 a) connected to the pull wire (500), an end of the second abutment block (127 b) remote from the second slider (127 a) being abuttable to the corresponding secondary pipe (400);

the single traction wire (500) can be pulled to drive the first sliding block (126 a) and the second sliding block (127 a) to simultaneously push the first abutting block (126 b) and the second abutting block (127 b) to move along the radial direction of the main leg (100) respectively.

4. A heavy support leg according to claim 3, characterized in that the first lock block (126) is provided with a first inclined surface (126 c), the first inclined surface (126 c) is provided on at least one of the first slide block (126 a) and the first abutment block (126 b), the extending direction of the first inclined surface (126 c) is arranged at an angle with the moving direction of the first slide block (126 a), and when the first slide block (126 a) moves along the axial direction of the main support leg (100), the first slide block (126 a) can drive the first abutment block (126 b) to move along the radial direction of the main support leg (100) through the first inclined surface (126 c); the second lock block (127) is provided with a second inclined plane (127 c), the second inclined plane (127 c) is arranged on at least one of the second slide block (127 a) and the second abutting block (127 b), the extending direction of the second inclined plane (127 c) and the moving direction of the second slide block (127 a) are arranged at an included angle, and when the second slide block (127 a) moves along the axial direction of the main support leg (100), the second slide block (127 a) can drive the second abutting block (127 b) to move along the radial direction of the main support leg (100) through the second inclined plane (127 c).

5. A heavy-duty support leg according to claim 3, characterized in that the locking part (120) comprises a first elastic member (128) and a second elastic member (129), the two ends of the first elastic member (128) along the axial direction of the main support leg (100) are respectively connected with the mounting seat (121) and the first sliding block (126 a), the two ends of the second elastic member (129) along the axial direction of the main support leg (100) are respectively connected with the mounting seat (121) and the second sliding block (127 a), and in the locking state, a single pulling wire (500) can be pulled to drive the first sliding block (126 a) and the second sliding block (127 a) to simultaneously overcome the elastic force of the first elastic member (128) and the elastic force of the second elastic member (129) to move along the axial direction of the main support leg (100); in the unlocking state, the first elastic piece (128) and the second elastic piece (129) release elastic force simultaneously, and the first sliding block (126 a) and the second sliding block (127 a) are driven to move along the axial direction of the main support leg (100) respectively.

6. The heavy-duty support leg of claim 5, wherein the pull wire (500) is provided with a first push block (520) and a second push block (530), the second push block (530) is abutted against the first slider (126 a), the second push block (530) is abutted against the second slider (127 a), and when the pull wire (500) is pulled, the first push block (520) and the second push block (530) simultaneously drive the first slider (126 a) and the second slider (127 a) to move along the axial direction of the main leg (100), respectively.

7. The heavy-duty support leg of claim 1, wherein the heavy-duty support leg (10) further comprises a spool (510), two mounting seats (121) are respectively connected to opposite ends of the spool (510), and the pulling wire (500) is threaded through the spool (510) and is movable along an axial direction of the spool (510).

8. The heavy-duty support leg according to claim 1, characterized in that the heavy-duty support leg (10) comprises a driving part (600), the driving part (600) comprises a wrench (610) and a hollow connecting cylinder (620), the connecting cylinder (620) is connected with the wrench (610), the traction wire (500) is connected with the connecting cylinder (620), the wrench (610) is rotationally connected with the mounting seat (121), and the wrench (610) can rotate relative to the mounting seat (121) to drive the connecting cylinder (620) to rotate so that the traction wire (500) is pulled and put.

9. The heavy support leg according to claim 1, characterized in that the second leg (300) is movably sleeved on the inner side of the first leg (200), and in the storage state, the second leg (300) is sleeved on the inner side of the first leg (200), and the first leg (200) is sleeved on the inner side of the main leg (100).

10. A heavy duty support foot stand comprising:

a base (700);

a plurality of heavy support legs (10) according to any of claims 1 to 9, a plurality of said heavy support legs (10) being rotatably connected to said base (700) for effecting opening and closing of said heavy support foot rest (20).