Heavy duty television trolley

Abstract

The utility model discloses a heavy television trolley relates to television trolley technical field, the utility model discloses a movable frame is provided with a plurality of universal wheel in the bottom, and the movable frame surface is provided with the gravity center mechanism, and the movable frame surface is provided with the storage mechanism, and the movable frame inside is provided with the elevating system, and the elevating of elevating system end is provided with the mounting mechanism, and the gravity center mechanism detection end is used for detecting the gravity center distribution situation when movable frame moves to make the gravity center mechanism counterweight end move, and the gravity center leveling of movable frame is carried out. The utility model discloses the movable frame gravity center distribution situation is detected through the gravity center mechanism detection end, and the gravity center of movable frame on the slope surface is detected and is shifted position, and then makes the gravity center mechanism counterweight end move, and the gravity center leveling of movable frame is carried out, and the stability of movable frame when moving on the slope terrain is strengthened, avoids the rollover risk caused by gravity center unbalance, and is applicable to the carrying scene of heavy television.

Description

Technical Field

[0001] This utility model belongs to the field of television cart technology, and more specifically, it relates to a heavy-duty television cart. Background Technology

[0002] Heavy-duty TV trolleys are professional equipment designed for the safe handling of large-screen, heavy TVs. They typically consist of a steel frame, a non-slip buffer table, and casters with brakes. When using them, the TV must be placed securely on the non-slip mat. They are suitable for scenarios such as TV store displays, studio equipment movement, and installation of ultra-large screen TVs in homes, effectively avoiding the risk of screen damage or tipping caused by manual handling.

[0003] According to Chinese Patent Publication No. CN222377750U, a portable TV trolley bracket includes a base, with casters fixedly installed at the bottom of the base, a column fixedly installed at the top of the base, a mounting bracket fixedly installed on the side wall of the column, a retracting mechanism for easy movement of the bracket provided on the side wall of the column, and a protective mechanism for the protective plug provided on the retracting mechanism.

[0004] However, the above-mentioned device moves as a whole by using casters, which is consistent with the movement method in the prior art. Since the TV itself is heavy and has a high center of gravity, when the casters move the device on the slope, the uneven distribution of weight between the front and rear ends of the cart will cause a significant increase in the difference in load on the front or rear wheels of the cart, resulting in a shift in the center of gravity of the cart, which greatly increases the risk of tipping over. Utility Model Content

[0005] In view of the problem that heavy-duty TV carts are prone to tilting when moving on sloping surfaces, this utility model proposes a heavy-duty TV cart to overcome the above-mentioned technical problems existing in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a heavy-duty TV trolley, including a mobile frame, a plurality of universal wheels at the bottom of the mobile frame, a center of gravity mechanism on the surface of the mobile frame, a storage mechanism on the surface of the mobile frame, a lifting mechanism inside the mobile frame, and an installation mechanism at the lifting end of the lifting mechanism.

[0008] The installation mechanism is used to install heavy televisions, and the detection end of the center of gravity mechanism is used to detect the center of gravity distribution when the mobile frame is carrying a heavy television and moving it, so that the counterweight end of the center of gravity mechanism moves to adjust the center of gravity of the mobile frame.

[0009] Furthermore, the center of gravity mechanism includes a pressure sensor, which is fixedly installed at the bottom of the movable frame above and at the top of the universal wheel below. A main frame is fixedly connected to the surface of the movable frame, and a motor is fixedly connected to one end of the main frame. A lead screw is fixedly connected to the output shaft of the motor, and a transverse frame is threadedly connected to the surface of the lead screw. The transverse frame is slidably connected to the inner wall of the main frame.

[0010] Furthermore, a slide rail is fixedly installed on the surface of the transverse frame, and a vertical frame is fixedly connected to the slider end of the slide rail. The vertical frame is slidably connected to the surface of the transverse frame. A motor is fixedly installed at one end of the vertical frame, and a gear is fixedly connected to the output shaft of the motor. A rack is fixedly connected to the surface of the transverse frame, and the rack meshes with the gear. A counterweight is fixedly connected to the surface of the vertical frame.

[0011] Furthermore, the storage mechanism includes a placement rack, which is fixedly connected to the surface of the movable rack, and a placement box is slidably connected inside the placement rack.

[0012] Furthermore, the lifting mechanism includes a lifting frame, which is slidably connected to the lifting end of the movable frame. A lifting rod is rotatably connected to the surface of the lifting frame. A second motor is fixedly installed inside the movable frame. A bidirectional screw is fixedly connected to the output shaft of the second motor. The bidirectional screw is rotatably connected inside the movable frame. A moving block is threadedly connected to the surface of the bidirectional screw. One end of the moving block is rotatably connected to one end of the lifting rod.

[0013] Furthermore, the installation mechanism includes a mounting frame, which is fixedly connected inside the lifting frame. A fixing frame is slidably connected to the surface of the mounting frame. The surface of the mounting frame is provided with multiple adjustment holes, and the surface of the fixing frame is provided with multiple fixing holes.

[0014] Furthermore, an electrical box is fixedly connected to one side of the mounting bracket.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model uses the detection end of the center of gravity mechanism to detect the center of gravity distribution of the mobile frame, detects the offset position of the center of gravity of the mobile frame on the slope surface, and then moves the counterweight end of the center of gravity mechanism to adjust the center of gravity of the mobile frame, effectively counteracting the tilting torque. Through the dynamic leveling function of the center of gravity mechanism, the stability of the mobile frame when moving on sloping terrain is enhanced, avoiding the risk of tipping over due to imbalance of the center of gravity. It is suitable for the transportation of heavy televisions.

[0017] 2. This utility model uses a motor to drive a bidirectional screw to rotate, which in turn causes the moving blocks to slide relative to each other on the surface of the moving frame. This causes the moving blocks to rotate the lifting rod, which in turn causes the lifting frame to rise or fall in height. At the same time, the lifting frame slides inside the lifting end of the moving frame. When the distance between the moving blocks is greater, the height of the lifting frame decreases; when the distance between the moving blocks is smaller, the height of the lifting frame increases. This achieves smooth lifting and lowering of heavy-duty televisions. Compared with traditional manual adjustment, this method is not only less labor-intensive to operate but also allows for precise height control, making it particularly suitable for the lifting and lowering needs of heavy-duty televisions.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the back structure of this utility model;

[0022] Figure 3 This is a schematic cross-sectional view of the center of gravity mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the lifting mechanism structure of this utility model;

[0024] Figure 5 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0025] Figure 6 For the present utility model Figure 3 Enlarged structural diagram at point B.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Moving frame; 2. Casters; 3. Center of gravity mechanism; 301. Pressure sensor; 302. Main frame; 303. Motor 1; 304. Lead screw 1; 305. Horizontal moving frame; 306. Slide rail; 307. Vertical moving frame; 308. Motor 3; 309. Gear; 310. Rack; 311. Counterweight; 4. Storage mechanism; 401. Placement rack; 402. Placement box; 5. Lifting mechanism; 501. Lifting frame; 503. Lifting rod; 504. Motor 2; 505. Bidirectional screw; 506. Moving block; 6. Installation mechanism; 601. Mounting frame; 602. Fixing frame; 603. Adjustment hole; 604. Fixing hole; 605. Electrical box. Detailed Implementation

[0028] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0029] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0030] Please see Figures 1-6 As shown, this utility model is a heavy-duty TV trolley, including a mobile frame 1. The bottom of the mobile frame 1 is provided with multiple universal wheels 2. The surface of the mobile frame 1 is provided with a center of gravity mechanism 3. The surface of the mobile frame 1 is provided with a storage mechanism 4. The inside of the mobile frame 1 is provided with a lifting mechanism 5. The lifting end of the lifting mechanism 5 is provided with an installation mechanism 6.

[0031] The mounting mechanism 6 is used to install heavy televisions, and the detection end of the center of gravity mechanism 3 is used to detect the center of gravity distribution when the mobile frame 1 is loaded with heavy televisions and moves, so that the counterweight end of the center of gravity mechanism 3 moves to level the center of gravity of the mobile frame 1.

[0032] By mounting a heavy-duty television on the surface of the mounting mechanism 6, the lifting mechanism 5 can be activated to raise or lower the mounting mechanism 6, thereby adjusting the height of the heavy-duty television. The storage mechanism 4 stores the relevant accessories of the heavy-duty television (such as remote control). When moving the mobile frame 1, it is pushed by the universal wheels 2 to move the mobile frame 1. When encountering a slope, the detection end of the center of gravity mechanism 3 detects the distribution of the center of gravity of the mobile frame 1, detects the position of the center of gravity offset of the mobile frame 1, and then moves the counterweight end of the center of gravity mechanism 3 to level the center of gravity of the mobile frame 1, effectively counteracting the tilting torque. Through the dynamic leveling function of the center of gravity mechanism 3, the stability of the mobile frame 1 when moving on sloping terrain is enhanced, avoiding the risk of tipping over due to imbalance of the center of gravity. It is suitable for the transportation of heavy-duty televisions.

[0033] The center of gravity distribution of the mobile frame 1 is detected by the detection end of the center of gravity mechanism 3. The offset position of the center of gravity of the mobile frame 1 on the slope surface is detected. Then, the counterweight end of the center of gravity mechanism 3 is moved to adjust the center of gravity of the mobile frame 1, effectively counteracting the tilting moment. Through the dynamic leveling function of the center of gravity mechanism 3, the stability of the mobile frame 1 when moving on the slope is enhanced, avoiding the risk of tipping over due to imbalance of the center of gravity. It is suitable for the transportation of heavy televisions.

[0034] In one embodiment, the center of gravity mechanism 3 includes a pressure sensor 301, which is fixedly mounted on the bottom of the movable frame 1. The pressure sensor 301 is also fixedly mounted on the top of the universal wheel 2. A main frame 302 is fixedly connected to the surface of the movable frame 1. A motor 303 is fixedly connected to one end of the main frame 302. A lead screw 304 is fixedly connected to the output shaft of the motor 303. A transverse frame 305 is threaded onto the surface of the lead screw 304. A slide rail 306 is fixedly installed on the surface of the transverse frame 305, which is slidably connected to the inner wall of the main frame 302. The slider end of the slide rail 306 is fixedly connected to the vertical frame 307, which is slidably connected to the surface of the transverse frame 305. A motor 308 is fixedly installed at one end of the vertical frame 307. A gear 309 is fixedly connected to the output shaft of the motor 308. A rack 310 is fixedly connected to the surface of the transverse frame 305, and the gear 309 meshes with the surface of the rack 310. A counterweight 311 is fixedly connected to the surface of the vertical frame 307.

[0035] When encountering a slope, pressure sensors 301 at each support point at the bottom of the movable frame 1 detect the pressure on the movable frame 1. When a decrease in pressure is detected on one side of the movable frame 1, the drive motor 303 is activated, causing the lead screw 304 to rotate. The lead screw 304 then moves the transverse frame 305, adjusting the counterweight 311 laterally. Then, the motor 308 drives the gear 309 to rotate, causing the gear 309 to roll on the surface of the rack 310. This causes the gear 309 to move the vertical frame 307 along the slide rail 30. 6. Surface sliding: The vertical moving frame 307 drives the counterweight 311 to move vertically, realizing dual-axis movement of the counterweight 311. This allows the counterweight 311 to reach the side of the moving frame 1 where the pressure is reduced. Through the weight of the counterweight 311 itself, the pressure of each support point at the bottom of the moving frame 1 is kept within a similar range. By dynamically leveling the moving frame 1, the tilting moment is effectively offset, enhancing the stability of the moving frame 1 when moving on sloping terrain and avoiding the risk of tipping over due to imbalance of the center of gravity. This is suitable for the transportation of heavy televisions.

[0036] Furthermore, in practical applications, the pressure sensor 301 collects the vertical pressure values ​​of each support point of the moving frame 1 in real time through a high-precision analog-to-digital converter. Combined with the structural parameters of the moving frame 1 (such as the distance between support points), a torque balance equation is constructed: Σ(F_i×L_i)=M_total×G_offset (F_i is the pressure at each point, L_i is the projected distance from the support point to the geometric center, and G_offset is the center of gravity offset). When a decrease in pressure on one side is detected (such as a drop in pressure on the left front wheel), the control system outputs pulse width modulation (PWM) through a PID controller based on the offset direction (center of gravity shifts to the right) and the offset amount. The M signal causes motor 308 and motor 303 to move counterweight 311 to the left via lead screw 304 and gear 309 at a set acceleration and step distance. The counterweight 311 is moved to the left by displacement Δx. The reverse compensation torque ΔM = m·Δx·g (where m is the counterweight mass and g is the gravitational acceleration) generated by the displacement Δx of counterweight 311 offsets the center of gravity offset torque in real time until the feedback values ​​of pressure sensors 301 at each support point of the mobile frame 1 return to the preset threshold range, forming a high-frequency closed-loop control of "pressure acquisition → algorithm calculation → motor response → torque compensation" to ensure the anti-overturning stability of the mobile frame 1 under dynamic loads (such as inclined road surfaces).

[0037] In one embodiment, the storage mechanism 4 includes a placement rack 401, which is fixedly connected to the surface of the movable rack 1, and a placement box 402 is slidably connected inside the placement rack 401.

[0038] By sliding out the storage box 402, the remote control and instruction manual of the heavy TV can be placed inside the storage box 402, and the shelf 401 can hold items that are needed temporarily.

[0039] In one embodiment, the lifting mechanism 5 includes a lifting frame 501, which is slidably connected to the lifting end of the movable frame 1. A lifting rod 503 is rotatably connected to the surface of the lifting frame 501. A second motor 504 is fixedly installed inside the movable frame 1. A bidirectional screw 505 is fixedly connected to the output shaft of the second motor 504. The bidirectional screw 505 is rotatably connected inside the movable frame 1. A moving block 506 is threadedly connected to the surface of the bidirectional screw 505. One end of the moving block 506 is rotatably connected to one end of the lifting rod 503.

[0040] Motor 504 drives the bidirectional screw 505 to rotate, causing the bidirectional screw 505 to drive the moving block 506 to slide relative to the surface of the moving frame 1. The moving block 506 drives the lifting rod 503 to rotate, causing the lifting rod 503 to drive the lifting frame 501 to rise and fall in height. At the same time, the lifting frame 501 slides inside the lifting end of the moving frame 1. When the distance between the moving blocks 506 is larger, the height of the lifting frame 501 decreases; when the distance between the moving blocks 506 is smaller, the height of the lifting frame 501 increases, thus realizing the lifting and lowering of heavy televisions.

[0041] In one embodiment, the installation mechanism 6 includes a mounting frame 601, which is fixedly connected inside the lifting frame 501. A fixing frame 602 is slidably connected to the surface of the mounting frame 601. The surface of the mounting frame 601 is provided with a plurality of adjustment holes 603, and the surface of the fixing frame 602 is provided with a plurality of fixing holes 604. An electrical box 605 is fixedly connected to one side of the mounting frame 601.

[0042] Slide the mounting bracket 602 so that the position of the fixing hole 604 on the surface of the mounting bracket 602 is consistent with the position of the mounting hole of the heavy-duty television. Then, the mounting bracket 602 is fixedly connected to the mounting bracket 601 through the adjustment hole 603 on the surface of the mounting bracket 601 by bolts. The heavy-duty television is then installed on the surface of the mounting bracket 602 and fixed by bolts matching the mounting hole of the heavy-duty television with the fixing hole 604. The electrical box 605 is used to install the electrical components (such as the control pressure sensor 301 used by the center of gravity mechanism 3 and the controllers of each motor).

[0043] Through the above technical solution, 1. Pressure sensors 301 at each support point at the bottom of the movable frame 1 are used to detect the pressure of the movable frame 1. When a decrease in pressure is detected on one side of the movable frame 1, the drive motor 303 is activated, causing the lead screw 304 to rotate. The lead screw 304 then moves the transverse frame 305 to adjust the lateral movement of the counterweight 311. Then, the motor 308 drives the gear 309 to rotate, causing the gear 309 to roll on the surface of the rack 310. This causes the gear 309 to move the vertical frame 307 along the slide rail. The surface of 306 slides, and the vertical moving frame 307 drives the counterweight 311 to move vertically, realizing the dual-axis movement of the counterweight 311. This allows the counterweight 311 to reach the side of the moving frame 1 where the pressure is reduced. Through the weight of the counterweight 311 itself, the pressure of each support point at the bottom of the moving frame 1 is kept within a similar range. By dynamically leveling the moving frame 1, the tilting moment is effectively offset, enhancing the stability of the moving frame 1 when moving on sloping terrain and avoiding the risk of tipping over due to imbalance of the center of gravity. This is suitable for the transportation of heavy televisions.

[0044] 2. The double-headed screw 505 is driven to rotate by the motor 504, which causes the moving block 506 to slide relative to the surface of the moving frame 1. The moving block 506 causes the lifting rod 503 to rotate, which in turn causes the lifting frame 501 to rise or fall in height. At the same time, the lifting frame 501 slides inside the lifting end of the moving frame 1. When the distance between the moving blocks 506 is greater, the height of the lifting frame 501 decreases; when the distance between the moving blocks 506 is smaller, the height of the lifting frame 501 increases. This achieves smooth lifting and lowering of heavy-duty televisions. Compared with traditional manual adjustment, it is not only easier to operate, but also allows for precise height control, making it particularly suitable for the lifting and lowering needs of heavy-duty televisions.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A heavy television trolley comprising a mobile frame (1), characterized in that, The bottom of the mobile frame (1) is provided with multiple casters (2), the surface of the mobile frame (1) is provided with a center of gravity mechanism (3), the surface of the mobile frame (1) is provided with a storage mechanism (4), the inside of the mobile frame (1) is provided with a lifting mechanism (5), and the lifting end of the lifting mechanism (5) is provided with an installation mechanism (6). The installation mechanism (6) is used to install heavy televisions. The detection end of the center of gravity mechanism (3) is used to detect the center of gravity distribution when the mobile frame (1) is loaded with heavy televisions and moves, so that the counterweight end of the center of gravity mechanism (3) moves to level the center of gravity of the mobile frame (1).

2. A heavy duty television cart according to claim 1, wherein, The center of gravity mechanism (3) includes a pressure sensor (301), which is fixedly installed at the bottom of the movable frame (1) and at the top of the universal wheel (2). A main frame (302) is fixedly connected to the surface of the movable frame (1). A motor (303) is fixedly connected to one end of the main frame (302). A lead screw (304) is fixedly connected to the output shaft of the motor (303). A transverse frame (305) is threadedly connected to the surface of the lead screw (304). The transverse frame (305) is slidably connected to the inner wall of the main frame (302).

3. A heavy duty television cart according to claim 2, wherein, A slide rail (306) is fixedly installed on the surface of the transverse frame (305). A vertical frame (307) is fixedly connected to the slider end of the slide rail (306). The vertical frame (307) is slidably connected to the surface of the transverse frame (305). A motor (308) is fixedly installed at one end of the vertical frame (307). A gear (309) is fixedly connected to the output shaft of the motor (308). A rack (310) is fixedly connected to the surface of the transverse frame (305). The rack (310) meshes with the gear (309). A counterweight (311) is fixedly connected to the surface of the vertical frame (307).

4. A heavy duty television cart according to claim 1, wherein, The storage mechanism (4) includes a placement rack (401), which is fixedly connected to the surface of the movable rack (1), and a placement box (402) is slidably connected inside the placement rack (401).

5. A heavy-duty television trolley according to claim 1, characterized in that, The lifting mechanism (5) includes a lifting frame (501), which is slidably connected to the lifting end of the movable frame (1). A lifting rod (503) is rotatably connected to the surface of the lifting frame (501). A second motor (504) is fixedly installed inside the movable frame (1). A bidirectional screw (505) is fixedly connected to the output shaft of the second motor (504). The bidirectional screw (505) is rotatably connected inside the movable frame (1). A moving block (506) is threadedly connected to the surface of the bidirectional screw (505). One end of the moving block (506) is rotatably connected to one end of the lifting rod (503).

6. A heavy-duty television trolley according to claim 5, characterized in that, The installation mechanism (6) includes a mounting frame (601), which is fixedly connected inside the lifting frame (501). A fixing frame (602) is slidably connected to the surface of the mounting frame (601). Multiple adjustment holes (603) are provided on the surface of the mounting frame (601), and multiple fixing holes (604) are provided on the surface of the fixing frame (602).

7. A heavy-duty television trolley according to claim 6, characterized in that, An electrical box (605) is fixedly connected to one side of the mounting bracket (601).

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