CN220135173U - Power arm structure and liquid crystal display bracket - Google Patents

Abstract

The utility model relates to the technical field of display brackets, in particular to a power arm structure and a liquid crystal display bracket, which comprises a power arm, wherein the power arm comprises an outer pipe component, an inner pipe component, a long bolt, a lower connector, an upper connector connecting piece and an upper connector, the outer pipe component comprises a baffle plate, a welding sleeve and an outer pipe, the baffle plate and the welding sleeve are fixed inside a first end of the outer pipe, the first end of the lower connector is arranged at the first end of the outer pipe through a first fixing component, the first end of the lower connector is positioned in the welding sleeve, the upper connector connecting piece and the upper connector are arranged at a second end of the outer pipe through a second fixing component, the inner pipe component is movably arranged in the outer pipe, the first end of the inner pipe component is movably connected with the lower connector, the second end of the inner pipe component is movably connected with the upper connector, and the long bolt sequentially passes through the baffle plate and the lower connector and then is screwed with the inner pipe component. The inner tube assembly is driven to slide in the outer tube by screwing the long bolt and used for balancing the weight of the liquid crystal display, so that hovering during up-and-down adjustment is realized.

Description

Power arm structure and liquid crystal display bracket

Technical Field

The utility model relates to the technical field of display supports, in particular to a power arm structure and a liquid crystal display support.

Background

With the continuous improvement of the living standard of people, the computer is used for a longer time, and the display is used as a conventional output device. The conventional display bracket is usually fixed on a desktop, and after the liquid crystal display is mounted on the display bracket, adjustment of the liquid crystal display cannot be realized, so that the use is inconvenient. The utility model patent of patent publication No. CN205560169U discloses a liquid crystal display bracket, which comprises a bracket main body, a fixing frame and foot pads, wherein the fixing frame and the foot pads are used for fixing the liquid crystal display, the bracket main body is of an integrated structure and sequentially comprises a bracket head, a bracket and a bracket base from top to bottom, the tail end of the bracket head is provided with a screw rod, the fixing frame is composed of two L-shaped fixing rods, one shorter ends of the two fixing rods are respectively provided with a through hole, the screw rod penetrates through the through holes and is locked by screws, and the foot pads are multiple and are positioned on the bracket base. This prior art is fixed in on the desktop through the support base, and LCD installs on the mount, in the use, can't adjust LCD's the upper and lower position about, and it is inconvenient to use.

In view of the problems in the prior art, a great deal of research is performed by related technicians, and an adjustable liquid crystal display bracket is currently available on the market, but the adjustable liquid crystal display bracket still has structural defects, such as difficulty in realizing hovering of a liquid crystal display in the up-and-down adjustment process.

Accordingly, there is a need for improvements over the prior art.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a power arm structure and a liquid crystal display bracket, and the inner pipe assembly is driven to slide in the outer pipe by screwing a long bolt, so that the liquid crystal display can generate a force capable of balancing the weight of the liquid crystal display in the process of adjusting the upper and lower positions, thereby realizing hovering of the liquid crystal display.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a power arm structure, including the power arm, the power arm includes outer tube subassembly, inner tube subassembly, the stay bolt, lower connector, go up connector connecting piece and go up the connector, outer tube subassembly includes the separation blade, welding sleeve and outer tube, separation blade and welding sleeve are fixed in the first end of outer tube inside, the first end of lower connector is installed in the first end of outer tube through fixed subassembly one, the first end of lower connector is located welding sleeve, go up connector connecting piece and last connector and install in the second end of outer tube through fixed subassembly two, inner tube subassembly activity is located in the outer tube, inner tube subassembly's first end and lower connector swing joint, inner tube subassembly's second end and last connector swing joint, the stay bolt passes in proper order and connects soon with inner tube subassembly after separation blade and the lower connector.

According to the scheme, the inner pipe assembly comprises a lower inclined strut, a lower inclined strut welding pin, a sliding sleeve I, a welding piece, an inner pipe, a spring clearance sleeve I, a spring, a sliding block, an upper inclined strut welding pin, an upper inclined strut, a sliding sleeve II and a spring clearance sleeve II, wherein the welding piece is fixed in the first end of the inner pipe, the first end of the lower inclined strut is hinged with the first end of the lower connector through the lower inclined strut pin, the second end of the lower inclined strut is hinged with the first end of the inner pipe through the lower inclined strut welding pin, the spring clearance sleeve I, the spring clearance sleeve II and the sliding block are sequentially propped against the inner pipe, the long bolt sequentially penetrates through the baffle piece, the lower connector, the welding piece, the spring clearance sleeve I, the spring clearance sleeve II and the sliding block in a threaded screwing mode, the first end of the upper inclined strut is hinged with the second end of the inner pipe through the upper inclined strut welding pin, the second end of the upper inclined strut is hinged with the upper connector through the upper inclined strut pin, the first end of the sliding sleeve I is fixed on the outer circle of the first end of the inner pipe, and the sliding sleeve II is fixed on the outer circle of the second end of the inner pipe.

According to the scheme, the first end of the outer tube is detachably connected with the tube plug, and the tube plug is provided with the through hole corresponding to the long bolt.

According to the scheme, the first fixing component comprises a short connecting screw, a first fixing piece, a second fixing piece, a first plastic damping pipe and a second plastic damping pipe, the second fixing piece sequentially penetrates through the second plastic damping pipe, the through hole on one side of the outer pipe, the hexagonal hole on one side of the welding sleeve, the lower connector, the hexagonal hole on the other side of the welding sleeve, the through hole on the other side of the outer pipe and the first plastic damping pipe and then abuts against the first fixing piece, and the first fixing piece and the second fixing piece are locked and fixed or the damping size is adjusted through the short connecting screw.

According to the scheme, the second fixing component comprises a long connecting screw, a third fixing piece and a fourth fixing piece, the fourth fixing piece sequentially penetrates through the through hole on one side of the outer tube, the through hole on one side of the upper connector connecting piece, the upper connector, the through hole on the other side of the upper connector connecting piece and the through hole on the other side of the outer tube and then abuts against the third fixing piece, and the third fixing piece and the fourth fixing piece are locked and fixed or the damping size is adjusted through the long connecting screw.

The utility model provides a LCD support, including the link head, the fixed arm, fixed foot and foretell power arm, be equipped with on the fixed foot and be used for being fixed in the locking subassembly on the desk, but the first end of fixed arm installs on the fixed foot with the side-to-side swing, be equipped with locking subassembly one between fixed arm and the fixed foot, but the connector of power arm installs on the second end of fixed arm with the side-to-side swing, be equipped with locking subassembly two between the connector of power arm and the fixed arm, the link head is installed on the last connector of power arm.

According to the above scheme, be equipped with spliced pole one on the fixed foot, the first end of fixed arm is equipped with spliced pole two, and spliced pole two can control the cover and locate on the spliced pole one with rocking, and locking assembly one includes bolt one, after adjusting the position about between fixed arm and the fixed foot, through bolt one with spliced pole two with spliced pole one locking fixed or the adjustment damping size.

According to the scheme, the connecting head is provided with the connecting column III, the second end of the fixing arm is provided with the connecting column IV, the connecting column III can be inserted into the connecting column IV in a left-right swinging mode, the locking assembly II comprises the bolt II, and after the left-right position between the connecting head and the fixing arm is adjusted, the connecting column IV and the connecting column III are locked and fixed or the damping size is adjusted through the bolt II.

According to the scheme, the hanging piece head comprises the connecting piece and the display fixing piece, the connecting piece is arranged on the upper connecting head of the power arm, the display fixing piece can be arranged on the connecting piece in an up-and-down swinging mode, a locking assembly III is arranged between the display fixing piece and the connecting piece, the locking assembly III comprises a bolt III, and after the up-and-down position between the display fixing piece and the connecting piece is adjusted, the display fixing piece and the connecting piece are locked and fixed or the damping size is adjusted through the bolt III.

According to the scheme, a plurality of line cards are respectively fixed on the power arm and the fixed arm.

The utility model has the beneficial effects that:

according to the utility model, the inner pipe assembly is driven to slide in the outer pipe by screwing the long bolt, so that a force capable of balancing the weight of the liquid crystal display is generated in the process of adjusting the upper and lower positions of the liquid crystal display, thereby realizing hovering of the liquid crystal display, and being convenient to operate.

Drawings

FIG. 1 is an exploded view of a power arm of the present utility model;

FIG. 2 is a cross-sectional view of a power arm of the present utility model;

FIG. 3 is a cross-sectional view of the inner tube assembly of the present utility model;

fig. 4 is an exploded view of a stand for a liquid crystal display according to the present utility model.

In the figure: 1. the device comprises a long bolt, a pipe plug, a 3, a baffle plate, a 4, a welding sleeve, a 5, a lower diagonal bracing pin, a 6, a lower connector, a 7, a short connecting screw, a 8, a first fixing part, a 9, a second fixing part, a 10, a first plastic damping pipe, a 11, an outer pipe, a 12, a wire clip, a 13, a long connecting arm, a 14, a third fixing part, a 15, a fourth fixing part, a 16, a lower diagonal bracing, a 17, a lower diagonal bracing welding pin, a 18, a first sliding sleeve, a 19, a welding sheet, a 20, an inner pipe, a 21, a spring clearance sleeve, a 22, a spring, a 23, a sliding block, a 24, an upper diagonal bracing welding pin, a 25, an upper diagonal bracing pin, a 27, an upper connector, a 28, an upper connector, a 29, a second sliding sleeve, a 30, a spring clearance sleeve, a 31, a second plastic damping pipe, a 32, a hanging sheet head, a 33, a power arm, a 34, a fixing arm, a 35, a fixing leg, a 36, a locking assembly, a 37, a connecting post, a 38, a connecting post, a second 39, a connecting post, a 40, a connecting post, a fourth connecting post, a 41 and a connector.

Description of the embodiments

The technical scheme of the utility model is described below with reference to the accompanying drawings and examples.

As shown in fig. 1 to 4, the power arm structure of the present utility model includes a power arm 33, the power arm 33 includes an outer pipe assembly, an inner pipe assembly, a long bolt 1, a lower connector 6, an upper connector connecting member 27 and an upper connector 28, the outer pipe assembly includes a baffle 3, a welding sleeve 4 and an outer pipe 11, the baffle 3 and the welding sleeve 4 are fixed inside a first end of the outer pipe 11, the first end of the lower connector 6 is mounted at the first end of the outer pipe 11 through a first fixing assembly, the first end of the lower connector 6 is located in the welding sleeve 4, the upper connector connecting member 27 and the upper connector 28 are mounted at a second end of the outer pipe 11 through a second fixing assembly, the inner pipe assembly is movably disposed in the outer pipe 11, the first end of the inner pipe assembly is movably connected with the lower connector 6, the second end of the inner pipe assembly is movably connected with the upper connector 28, and the long bolt 1 sequentially passes through the baffle 3 and the lower connector 6 to be screwed with the inner pipe assembly. The above constitutes the basic structure of the present utility model.

The power arm 33 is one part of a bracket of a liquid crystal display, the power arm 33 is composed of an outer tube assembly, an inner tube assembly, a long bolt 1, a lower connector 6, an upper connector connecting piece 27 and an upper connector 28, wherein the inner tube assembly is movably arranged in the outer tube 11, a first end of the inner tube assembly is movably connected with the lower connector 6 (the lower connector 6 is connected with a fixed arm 34 of the bracket of the display), a second end of the inner tube assembly is movably connected with the upper connector 28 (the upper connector 28 is connected with a hanging piece head 32 of the bracket of the display), the long bolt 1 sequentially passes through a baffle 3 and the lower connector 6 and then is screwed with the inner tube assembly, the inner tube assembly is driven to slide in the outer tube 11 by screwing the long bolt 1, and a force which can balance the weight of the liquid crystal display is generated in the process of adjusting the upper position and the lower position of the liquid crystal display is realized, so that the liquid crystal display hovers, and the operation is convenient.

In practical application, the baffle 3 is used for limiting the long bolt 1.

More specifically, the inner tube assembly includes a lower diagonal brace 16, a lower diagonal brace welding pin 17, a first sliding sleeve 18, a welding tab 19, an inner tube 20, a first spring clearance sleeve 21, a spring 22, a sliding block 23, an upper diagonal brace welding pin 24, an upper diagonal brace 25, a second sliding sleeve 29 and a second spring clearance sleeve 30, wherein the welding tab 19 is fixed in a first end of the inner tube 20, the first end of the lower diagonal brace 16 is hinged with a first end of the lower connecting head 6 through the lower diagonal brace pin 5, a second end of the lower diagonal brace 16 is hinged with a first end of the inner tube 20 through the lower diagonal brace welding pin 17, the first spring clearance sleeve 21, the spring 22, the second spring clearance sleeve 30 and the sliding block 23 are sequentially abutted against the inner tube 20, the long bolt 1 sequentially passes through the retaining piece 3, the lower connecting head 6, the welding piece 19, the first spring clearance sleeve 21, the spring 22 and the second spring clearance sleeve 30 and then screwed with the sliding block 23, the first end of the upper diagonal brace 25 is hinged with a second end of the inner tube 20 through the upper diagonal brace welding pin 24, the second end of the upper diagonal brace 25 is hinged with a second end of the upper diagonal brace 20, the second end of the upper diagonal brace 25 is fixed with a second end of the upper diagonal brace 20 through the upper diagonal brace 25 and the second end of the upper diagonal brace 25 is fixed with a second end of the upper joint sleeve 28.

According to the utility model, two ends of the lower inclined strut 16 are respectively connected with the lower connector 6 and the inner tube 20, and it is to be noted that, the mounting hole positions at two ends of the lower inclined strut 16 are always in an eccentric state (as shown in fig. 2 and 3, the mounting hole positions of the first end of the lower inclined strut 16 and the lower inclined strut pin 5 are matched, and the mounting hole positions of the second end of the lower inclined strut 16 and the lower inclined strut welding pin 17 are not always on the same horizontal plane), when the long bolt 1 is screwed clockwise, the long bolt 1 drives the sliding block 23 to slide left in the inner tube 20, the spring 22 is compressed, a reaction force is generated after the spring 22 is compressed, and a pushing force on the lower inclined strut 16 is generated, the larger the reaction force is, the larger the pushing force is, the inner tube assembly is driven to slide in the outer tube 11 after the sliding block 23 slides to a certain position, the horizontal distance of the mounting hole at two ends of the lower inclined strut 16 is reduced, and the spring 22 can be loosened when the long bolt 1 is screwed anticlockwise; after the LCD is installed, it is connected with the upper connector 28, in the process of adjusting the upper and lower positions of the LCD, the center of gravity of the LCD changes, the inner tube assembly slides along the axial direction of the outer tube 11, and the horizontal distance between the two mounting holes on the lower diagonal bracing 16 and the upper diagonal bracing 25 changes in a constant inverse proportion, namely: when the horizontal distance of the mounting holes at the two ends of the lower diagonal bracing 16 is reduced (the inner pipe assembly is close to the lower connector 6), the horizontal distance of the mounting holes at the two ends of the upper diagonal bracing 25 is increased, and when the horizontal distance of the mounting holes at the two ends of the lower diagonal bracing 16 is increased (the inner pipe assembly is far away from the lower connector 6), the horizontal distance of the mounting holes at the two ends of the upper diagonal bracing 25 is reduced, and under the effect of mutual compensation, the liquid crystal display can hover in the process of adjusting the upper position and the lower position.

In practice, the lower diagonal brace welding pin 17 is fixed to the inner tube 20, and the upper diagonal brace welding pin 24 is fixed to the inner tube 20.

In this embodiment, the first end of the outer tube 11 is detachably connected with a plug 2, and the plug 2 is provided with a through hole corresponding to the long bolt 1.

In fine tuning, the long bolt 1 can be screwed through the through hole by a tool, and in coarse tuning, the long bolt 1 can be screwed through the through hole by the tool after the pipe plug 2 is disassembled.

In this embodiment, the first fixing component includes a first short connecting screw 7, a first fixing member 8, a second fixing member 9, a first plastic damping tube 10 and a second plastic damping tube 31, where the second fixing member 9 sequentially passes through the second plastic damping tube 31, a through hole on one side of the outer tube 11, a hexagonal hole on one side of the welding sleeve 4, the lower connector 6, a hexagonal hole on the other side of the welding sleeve 4, a through hole on the other side of the outer tube 11, and the first plastic damping tube 10 and then abuts against the first fixing member 8, and the first fixing member 8 and the second fixing member 9 are locked and fixed by the short connecting screw 7 or the damping size is adjusted.

It should be noted that, when the short connection screw 7 is in a completely screwed state, the first fixing member 8 and the second fixing member 9 are in a locked state and cannot rotate, and when the short connection screw 7 is in an incompletely screwed state, the first fixing member 8 and the second fixing member 9 are in an active state, and the active state can adjust the damping between the first fixing member 8 and the second fixing member 9 by adjusting the tightness adjustment of the short connection screw 7.

In this embodiment, the second fixing component includes a long connecting screw 13, a third fixing component 14 and a fourth fixing component 15, where the fourth fixing component 15 sequentially passes through the through hole on one side of the outer tube 11, the through hole on one side of the upper connector connecting component 27, the upper connector 28, the through hole on the other side of the upper connector connecting component 27, and the through hole on the other side of the outer tube 11, and then abuts against the third fixing component 14, and the long connecting screw 13 locks and fixes the third fixing component 14 and the fourth fixing component 15 or adjusts the damping size.

When the long connecting screw 13 is in a fully screwed state, the third fixing member 14 and the fourth fixing member 15 are in a locked state and cannot rotate, and when the long connecting screw 13 is in an incompletely screwed state, the third fixing member 14 and the fourth fixing member 15 are in an active state, and the damping size between the third fixing member 14 and the fourth fixing member 15 can be adjusted by adjusting the tightness of the long connecting screw 13.

The utility model provides a LCD support, including link head 32, fixed arm 34, fixed foot 35 and foretell power arm 33, be equipped with on the fixed foot 35 and be used for being fixed in the locking subassembly 36 on the desk, the first end of fixed arm 34 can install on fixed foot 35 with rocking side by side, be equipped with locking subassembly one between fixed arm 34 and the fixed foot 35, the lower connector 6 of power arm 33 can install on the second end of fixed arm 34 with rocking side by side, be equipped with locking subassembly two between the lower connector 6 of power arm 33 and the fixed arm 34, link head 32 is installed on the upper connector 28 of power arm 33.

When the liquid crystal display is mounted, the liquid crystal display is fixed on the hanging piece head 32, and the left and right swinging positions and the up and down swinging positions of the liquid crystal display can be conveniently adjusted through the cooperation among the hanging piece head 32, the fixing arm 34, the fixing foot 35 and the power arm 33, so that the use is convenient.

In this embodiment, the fixing leg 35 is provided with a first connecting post 37, the first end of the fixing arm 34 is provided with a second connecting post 38, the second connecting post 38 is sleeved on the first connecting post 37 in a manner of being capable of swinging left and right, the first locking assembly comprises a first bolt, and after the left and right positions between the fixing arm 34 and the fixing leg 35 are adjusted, the second connecting post 38 and the first connecting post 37 are locked and fixed or the damping size is adjusted through the first bolt.

It should be noted that, when the first bolt is in the fully tightened state, the second connecting post 38 and the first connecting post 37 are in the locked state and cannot rotate, and when the first bolt is in the incompletely tightened state, the second connecting post 38 and the first connecting post 37 are in the movable state, and the movable state can adjust the damping between the second connecting post 38 and the first connecting post 37 by adjusting the tightness of the first bolt.

In practical application, after the connecting post two 38 is sleeved on the connecting post one 37, the fixing arm 34 and the fixing foot 35 are in an axially movable connection state, the left and right relative positions between the fixing arm 34 and the fixing foot 35 can be adjusted, and after the adjustment is finished, the damping is locked and fixed with the connecting post one 37 or adjusted through the bolt one passing through the through hole on the connecting post two 38, so that the operation is convenient.

In this embodiment, the lower connector 6 is provided with a third connecting column 39, the second end of the fixing arm 34 is provided with a fourth connecting column 40, the third connecting column 39 is inserted into the fourth connecting column 40 in a manner of being capable of swinging left and right, the second locking assembly comprises a second bolt, and after the left and right positions between the lower connector 6 and the fixing arm 34 are adjusted, the fourth connecting column 40 and the third connecting column 39 are locked and fixed or the damping size is adjusted through the second bolt.

It should be noted that, when the second bolt is in the fully tightened state, the fourth connecting post 40 and the third connecting post 39 are in the locked state and cannot rotate, and when the second bolt is in the incompletely tightened state, the fourth connecting post 40 and the third connecting post 39 are in the movable state, and the movable state can adjust the damping between the fourth connecting post 40 and the third connecting post 39 by adjusting the tightness of the second bolt.

In practical application, after the connecting post III 39 is inserted into the connecting post IV 40, the lower connector 6 and the fixed arm 34 are in an axially movable connection state, the left and right relative positions between the lower connector 6 and the fixed arm 34 can be adjusted, and after the adjustment is finished, the damping is locked and fixed with the lower connector 6 or adjusted through the bolt II passing through the through hole on the connecting post IV 40, and the operation is convenient.

In this embodiment, the hanging piece head 32 includes a connecting piece 41 and a display fixing piece 42, the connecting piece 41 is mounted on the upper connector 28 of the power arm 33, the display fixing piece 42 is mounted on the connecting piece 41 in a manner of being capable of swinging up and down, a locking assembly III is arranged between the display fixing piece 42 and the connecting piece 41, the locking assembly III includes a bolt III, and after the up-down position between the display fixing piece 42 and the connecting piece 41 is adjusted, the display fixing piece 42 and the connecting piece 41 are locked and fixed or the damping size is adjusted through the bolt III.

When the third bolt is in the completely screwed state, the display fixing member 42 and the connecting member 41 are in a locked state and cannot rotate, and when the third bolt is in the incompletely screwed state, the display fixing member 42 and the connecting member 41 are in an active state, and the active state can be adjusted by adjusting the tightness of the third bolt so as to adjust the damping between the display fixing member 42 and the connecting member 41.

When the liquid crystal display bracket is applied, the bracket can swing left and right so as to be convenient for displaying screen contents with surrounding colleagues; the liquid crystal display can be turned up and down, so that the liquid crystal display is parallel to a desktop, a round table conference discussion scheme and the like can be developed, and the use is convenient.

In this embodiment, a plurality of line cards 12 are respectively fixed to the power arm 33 and the fixing arm 34. The line card 12 can be used for conveniently clamping the line of the liquid crystal display, so that the line is more convenient to run, and the condition of messy line is avoided.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative, not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are all within the scope of the present utility model.

Claims (10)

1. A power arm structure, its characterized in that: including power arm (33), power arm (33) include outer tube subassembly, inner tube subassembly, stock (1), down connector (6), go up connector connecting piece (27) and go up connector (28), outer tube subassembly includes separation blade (3), welding sleeve (4) and outer tube (11), separation blade (3) and welding sleeve (4) are fixed in the inside first end of outer tube (11), the first end of stock (6) is installed in the first end of outer tube (11) through fixed subassembly one, the first end of stock (6) is located welding sleeve (4), go up connector connecting piece (27) and go up connector (28) and install in the second end of outer tube (11) through fixed subassembly two, in outer tube (11) are located to the inner tube subassembly activity, inner tube subassembly's first end and lower connector (6) swing joint, inner tube subassembly's second end and last connector (28) swing joint, stock (1) pass in proper order behind separation blade (3) and the lower connector (6) and connect soon with the inner tube subassembly.

2. A power arm structure according to claim 1, wherein: the inner tube assembly comprises a lower inclined strut (16), a lower inclined strut welding pin (17), a first sliding sleeve (18), a welding piece (19), an inner tube (20), a first spring clearance sleeve (21), a spring (22), a sliding block (23), a second upper inclined strut welding pin (24), an upper inclined strut (25), a second sliding sleeve (29) and a second spring clearance sleeve (30), wherein the welding piece (19) is fixed in a first end of the inner tube (20), the first end of the lower inclined strut (16) is hinged with a first end of a lower connector (6) through a lower inclined strut pin (5), a second end of the lower inclined strut (16) is hinged with a first end of the inner tube (20) through the lower inclined strut welding pin (17), the first spring clearance sleeve (21), the spring (22), the second spring clearance sleeve (30) and the sliding block (23) are sequentially arranged in the inner tube (20), the first spring clearance sleeve (21) is abutted with the welding piece (19), the long bolt (1) sequentially passes through the blocking piece (3), the lower connector (6), the first spring clearance sleeve (19) and the second spring clearance sleeve (24) are in a screwed connection with the first end of the inner tube (20) through the lower inclined strut welding pin (21), the second end of the upper inclined strut (25) is hinged with the upper connector (28) through an upper inclined strut pin (26), the first sliding sleeve (18) is fixed on the outer circle of the first end of the inner tube (20), and the second sliding sleeve (29) is fixed on the outer circle of the second end of the inner tube (20).

3. A power arm structure according to claim 1, wherein: the first end of the outer tube (11) is detachably connected with a tube plug (2), and the tube plug (2) is provided with a perforation corresponding to the long bolt (1).

4. A power arm structure according to claim 1, wherein: the first fixing assembly comprises a first short connecting screw (7), a first fixing piece (8), a second fixing piece (9), a first plastic damping tube (10) and a second plastic damping tube (31), the second fixing piece (9) sequentially penetrates through the second plastic damping tube (31), a through hole on one side of an outer tube (11), a hexagonal hole on one side of a welding sleeve (4), a lower connector (6), a hexagonal hole on the other side of the welding sleeve (4), a through hole on the other side of the outer tube (11) and the first plastic damping tube (10) and then abuts against the first fixing piece (8), and the first fixing piece (8) and the second fixing piece (9) are locked and fixed by the short connecting screw (7) or the damping size is adjusted.

5. A power arm structure according to claim 1, wherein: the second fixing assembly comprises a long connecting screw (13), a third fixing piece (14) and a fourth fixing piece (15), the fourth fixing piece (15) sequentially penetrates through a through hole on one side of the outer tube (11), a through hole on one side of the upper connector connecting piece (27), an upper connector (28), a through hole on the other side of the upper connector connecting piece (27) and a through hole on the other side of the outer tube (11) and then abuts against the third fixing piece (14), and the third fixing piece (14) and the fourth fixing piece (15) are locked and fixed by the long connecting screw (13) or the damping size is adjusted.

6. A liquid crystal display stand, characterized by: the novel power arm comprises a hanging piece head (32), a fixing arm (34), a fixing foot (35) and any one of claims 1-5, wherein a locking component (36) which can be fixed on a table is arranged on the fixing foot (35), a first end of the fixing arm (34) can be arranged on the fixing foot (35) in a left-right swinging mode, a first locking component is arranged between the fixing arm (34) and the fixing foot (35), a connecting head (6) of the power arm (33) can be arranged on a second end of the fixing arm (34) in a left-right swinging mode, a second locking component is arranged between the connecting head (6) and the fixing arm (34), and the hanging piece head (32) is arranged on an upper connecting head (28) of the power arm (33).

7. A liquid crystal display stand according to claim 6, wherein: the fixing leg (35) is provided with a first connecting column (37), the first end of the fixing arm (34) is provided with a second connecting column (38), the second connecting column (38) is sleeved on the first connecting column (37) in a horizontal swinging mode, the first locking assembly comprises a first bolt, and after the left and right positions between the fixing arm (34) and the fixing leg (35) are adjusted, the second connecting column (38) and the first connecting column (37) are locked and fixed or the damping size is adjusted through the first bolt.

8. A liquid crystal display stand according to claim 6, wherein: the connecting head (6) is provided with a connecting post III (39), the second end of the fixed arm (34) is provided with a connecting post IV (40), the connecting post III (39) can be inserted into the connecting post IV (40) in a left-right swinging manner, the locking assembly II comprises a bolt II, and after the left-right position between the connecting head (6) and the fixed arm (34) is adjusted, the connecting post IV (40) and the connecting post IV (39) are locked and fixed or the damping size is adjusted through the bolt II.

9. A liquid crystal display stand according to claim 6, wherein: the hanging piece head (32) comprises a connecting piece (41) and a display fixing piece (42), the connecting piece (41) is arranged on an upper connector (28) of a power arm (33), the display fixing piece (42) can be arranged on the connecting piece (41) in an up-and-down swinging mode, a locking assembly III is arranged between the display fixing piece (42) and the connecting piece (41), the locking assembly III comprises a bolt III, and after the upper position and the lower position between the display fixing piece (42) and the connecting piece (41) are adjusted, the display fixing piece (42) and the connecting piece (41) are locked and fixed through the bolt III or the damping size is adjusted.

10. A liquid crystal display stand according to claim 6, wherein: a plurality of line cards (12) are respectively fixed on the power arm (33) and the fixed arm (34).