Lightweight rocker arm

Abstract

The utility model relates to the technical field of rocker arms, and discloses a lightweight rocker arm which comprises a bottom frame, a supporting frame, a main rocker arm, an auxiliary rocker arm, a take-up and pay-off assembly and an air supply assembly. A stand column is fixed to the top of the bottom frame through a flange, the top end of the stand column is rotationally connected with a supporting frame through a bearing, a main rocker arm is rotationally connected into the supporting frame through a shaft rod, and one end of the main rocker arm is sleeved with an auxiliary rocker arm; a water storage bag is hung at one end of the main rocker away from the auxiliary rocker through a hook. Air is supplied into the main rocker arm through the sucking pump, the auxiliary rocker arm is pushed to extend out, after the air in the main rocker arm is exhausted, the extension spring pulls the extending auxiliary rocker arm to retract into the main rocker arm, compared with a traditional automatic telescopic rocker arm, the novel rocker arm is lighter, the design of the water storage bag capable of being filled with water is adopted, and the same effect as a rotating balancing weight can be achieved; and the portable water dispenser is convenient to carry and suitable for being widely popularized and used.

Description

Technical Field

[0001] The utility model relates to the technical field of rocker arms, in particular to a lightweight rocker arm. Background Technique

[0002] A rocker arm is a camera support device, a large piece of equipment used in shooting large-scale film and television works such as TV dramas, movies, and advertisements. It can mainly shoot the scene in all directions during shooting without missing any corner.

[0003] All the existing telescopically automatic telescopic camera rocker arms used at the shooting site are electrically driven. Motors, lead screws, etc. will be installed inside the rocker arm, and more counterweights will be installed at the end of the rocker arm to keep it balanced, resulting in the rocker arm being heavy and inconvenient to carry and transport. For this reason, we propose a lightweight rocker arm. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the utility model provides a lightweight rocker arm, which solves the problems raised in the background technique.

[0005] The utility model provides the following technical scheme: a lightweight rocker arm, including a chassis, a support frame, a main rocker arm, a sub-rocker arm, a wire winding and unwinding assembly, and a gas supply assembly;

[0006] A column is fixed to the top of the chassis through a flange. The top of the column is rotatably connected to the support frame through a bearing. The main rocker arm is rotatably connected to the inside of the support frame through a shaft rod. A sub-rocker arm is sleeved at one end of the main rocker arm. A piston is fixed to the end of the sub-rocker arm located inside the main rocker arm through a bolt. A water storage bag is hung at the end of the main rocker arm far from the sub-rocker arm through a hook. A wire winding and unwinding assembly is arranged on the top of the main rocker arm. The wire winding and unwinding assembly includes a structure frame fixed to the top of the main rocker arm through a bolt. A wire winding disc is rotatably connected to the inside of the structure frame through a bearing. A gas supply assembly is arranged on the top of the chassis on one side of the column. The gas supply assembly includes an air extraction pump installed on the top of the chassis through a mounting frame.

[0007] Further, an intake valve is connected to one side of the main rocker arm of the chassis through a pipeline. An exhaust valve is connected to one side of the main rocker arm above the intake valve through a pipeline. The intake end of the air extraction pump is connected with a filter mesh cover through a threaded groove. The outlet end of the air extraction pump is fixed with a connecting hose through a clamp. One end of the connecting hose is connected to one end of the intake valve through a pipe joint.

[0008] Further, a vertical frame is fixed to one end of the top of the main rocker arm through a bolt. An auxiliary wheel is rotatably connected to the top of the vertical frame through a bearing. A rope is wound and fixed on the outside of the wire winding disc. The rope passes through the top of the auxiliary wheel and is fixed to the top of the sub-rocker arm through a bolt.

[0009] Further, a structure seat is fixed to the top end of the main rocker arm close to the structure frame by bolts, and handles are connected to both sides of the structure seat through threaded grooves. An installation plate is welded to the end of the sub-rocker arm away from the piston.

[0010] Further, the chassis, the column, the main rocker arm, and the sub-rocker arm are all made of magnesium alloy materials.

[0011] Further, brakeable universal wheels are equidistantly fixed to the bottom of the chassis by bolts.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] When the air pump and the intake valve are opened, the air pump works to transport external gas through the filter mesh cover to the inside of the main rocker arm through the connecting hose. The gas entering the main rocker arm pushes the sub-rocker arm to extend through the piston. When the air pump and the intake valve are closed and the exhaust valve is opened, the gas inside the chassis can be discharged. The tension spring pulls the extended sub-rocker arm to retract it into the main rocker arm, so that the distance of the camera can be adjusted. Pouring water into the water storage bag can play the same role as rotating the counterweight block to adjust the balance of the main rocker arm and the sub-rocker arm. However, the clear water in the water storage bag can be discharged, which is convenient for carrying.

[0014] When the sub-rocker arm expands and contracts, the operator holds the rocker and rotates the wire winding disc to pay out or wind up the wire. Tightening the fixing bolts can fix the rotated wire winding disc. The taut auxiliary wheel forms a triangle with the main rocker arm and the sub-rocker arm, which can improve the structural stability after the sub-rocker arm expands and contracts.

[0015] This lightweight rocker arm supplies air inside the main rocker arm through an air pump to push the sub-rocker arm to extend. After the gas inside the main rocker arm is discharged, the tension spring pulls the extended sub-rocker arm to retract into the main rocker arm. Compared with the traditional automatically telescopic rocker arm, it is lighter. And it adopts a water-injectable water storage bag design, which can play the same role as rotating the counterweight block. However, the clear water in the water storage bag can be discharged, which is convenient for carrying. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a schematic diagram of the main rocker arm and the sub-rocker arm of the present utility model;

[0018] Figure 3 It is a schematic diagram of the wire pay-out and winding component structure of the present utility model;

[0019] Figure 4 It is a schematic diagram of the air supply component structure of the present utility model;

[0020] Figure 5 It is a schematic diagram of the structure seat structure of the present utility model;

[0021] In the figure: 1, chassis; 2, column; 3, support frame; 4, main rocker arm; 5, auxiliary rocker arm; 6, wire winding and unwinding assembly; 601, structural frame; 602, wire reel; 603, rocker; 604, fixing bolt; 7, air supply assembly; 701, air extraction pump; 702, filter mesh cover; 703, connecting hose; 8, water storage bladder; 9, structural seat; 10, vertical frame; 11, auxiliary wheel; 12, rope; 13, handle; 14, mounting plate; 15, brakeable universal wheel; 16, intake valve; 17, exhaust valve; 18, piston; 19, tension spring. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-5 , in the embodiments of the present invention, it includes a chassis 1, a support frame 3, a main rocker arm 4, an auxiliary rocker arm 5, a wire winding and unwinding assembly 6, and an air supply assembly 7;

[0024] A column 2 is fixedly mounted on the top of the chassis 1 through a flange. The top of the column 2 is rotatably connected to a support frame 3 through a bearing. The inside of the support frame 3 is rotatably connected to a main rocker arm 4 through a shaft rod. An auxiliary rocker arm 5 is sleeved at one end of the main rocker arm 4. A piston 18 is fixedly mounted at one end of the auxiliary rocker arm 5 located inside the main rocker arm 4 through a bolt. A water storage bladder 8 is hung at one end of the main rocker arm 4 away from the auxiliary rocker arm 5 through a hook. A wire winding and unwinding assembly 6 is arranged on the top of the main rocker arm 4. The wire winding and unwinding assembly 6 includes a structural frame 601 fixedly mounted on the top of the main rocker arm 4 through a bolt. A wire reel 602 is rotatably connected to the inside of the structural frame 601 through a bearing. An air supply assembly 7 is arranged on the top of the chassis 1 on one side of the column 2. The air supply assembly 7 includes an air extraction pump 701 mounted on the top of the chassis 1 through a mounting bracket.

[0025] Among them, an intake valve 16 is connected to one side of the main rocker arm 4 of the chassis 1 through a pipeline. An exhaust valve 17 is connected to one side of the main rocker arm 4 above the intake valve 16 through a pipeline. The intake end of the air extraction pump 701 is connected to a filter mesh cover 702 through a threaded groove. The outlet end of the air extraction pump 701 is fixed with a connecting hose 703 through a clamp. One end of the connecting hose 703 is connected to one end of the intake valve 16 through a pipeline joint. When the air extraction pump 701 works, gas is transported into the main rocker arm 4 through the connecting hose 703 and the intake valve 16. Opening the exhaust valve 17 can discharge the gas in the main rocker arm 4. The filter mesh cover 702 can filter dust, sundries, etc.

[0026] Among them, one end at the top of the main rocker arm 4 is fixed with a vertical frame 10 by bolts. The top end of the vertical frame 10 is rotatably connected with an auxiliary wheel 11 through a bearing. A rope 12 is wound and fixed on the outer side of the wire winding disc 602. The rope 12 passes through the top of the auxiliary wheel 11 and is fixed on the top of the sub-rocker arm 5 by bolts. The vertical frame 10 and the auxiliary wheel 11 on its top can support the rope 12 while not affecting its movement.

[0027] Among them, one end at the top of the main rocker arm 4 close to the structural frame 601 is fixed with a structural seat 9 by bolts. Both sides of the structural seat 9 are connected with a handle 13 through threaded grooves. One end of the sub-rocker arm 5 far from the piston 18 is welded with a mounting plate 14. The setting of the mounting plate 14 facilitates the installation of the camera and the camera driving wall. The setting of the structural seat 9 facilitates the installation of the controller, display screen, etc. The setting of the handle 13 facilitates the personnel to hold and operate.

[0028] Among them, the chassis 1, the column 2, the main rocker arm 4 and the sub-rocker arm 5 are all made of magnesium alloy material. The chassis 1, the column 2, the main rocker arm 4 and the sub-rocker arm 5 made of magnesium alloy material have high strength and light texture.

[0029] Among them, the bottom of the chassis 1 is equidistantly fixed with brakeable universal wheels 15 by bolts. The setting of the brakeable universal wheels 15 facilitates the movement of the chassis 1.

[0030] The working principle of the present utility model is as follows: The support frame 3 is rotatably connected to the top end of the column 2 through a bearing. The main rocker arm 4 is rotatably connected to the inside of the support frame 3 through a shaft rod, so that the main rocker arm 4 can rotate and both ends can move up and down. The personnel use bolts to fix the driving frame and the camera on the mounting plate 14, and use bolts to install the controller, display screen, etc. on the structural seat 9. The personnel hold the handle 13 to control the rotation or tilting of the main rocker arm 4. Open the air extraction pump 701 and the intake valve 16. The air extraction pump 701 works to transport the external gas to the inside of the main rocker arm 4 through the connecting hose 703 via the filter mesh cover 702. The gas entering the main rocker arm 4 pushes the sub-rocker arm 5 to extend through the piston 18. Close the air extraction pump 701 and the intake valve 16, and open the exhaust valve 17 to discharge the gas inside the chassis 1. The tension spring 19 pulls the extended sub-rocker arm 5 to retract it into the main rocker arm 4, so as to adjust the distance of the camera. When the sub-rocker arm 5 expands and contracts, the personnel hold the rocker 603 to rotate the wire winding disc 602 to pay out or take in the wire. Tighten the fixing bolt 604 to fix the rotated wire winding disc 602. The taut auxiliary wheel 11 and the main rocker arm 4 and the sub-rocker arm 5 form a triangle, which can improve the structural stability after the sub-rocker arm 5 expands and contracts. Pouring water into the water storage bag 8 can play the same role as the rotating counterweight block, adjusting the balance of the main rocker arm 4 and the sub-rocker arm 5, but the clear water in the water storage bag 8 can be discharged, which is convenient for carrying.

[0031] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A lightweight rocker arm, comprising a chassis (1), a support frame (3), a main rocker arm (4), a sub-rocker arm (5), a wire winding and unwinding assembly (6) and a gas supply assembly (7); It is characterized in that: At the top of the chassis (1), a column (2) is fixed by a flange. At the top of the column (2), a support frame (3) is rotatably connected by a bearing. Inside the support frame (3), a main rocker arm (4) is rotatably connected by a shaft rod. A sub-rocker arm (5) is sleeved at one end of the main rocker arm (4). A piston (18) is fixed by a bolt at one end of the sub-rocker arm (5) located inside the main rocker arm (4). A water storage bag (8) is hung by a hook at one end of the main rocker arm (4) away from the sub-rocker arm (5). A wire winding and unwinding assembly (6) is arranged at the top of the main rocker arm (4). The wire winding and unwinding assembly (6) includes a structure frame (601) fixed by a bolt at the top of the main rocker arm (4). Inside the structure frame (601), a wire winding disc (602) is rotatably connected by a bearing. A gas supply assembly (7) is arranged at the top of the chassis (1) on one side of the column (2). The gas supply assembly (7) includes an air extraction pump (701) installed on the top of the chassis (1) by a mounting frame.

2. The lightweight rocker arm according to claim 1, wherein: An intake valve (16) is connected by a pipe on one side of the main rocker arm (4) of the chassis (1). An exhaust valve (17) is connected by a pipe on one side of the main rocker arm (4) above the intake valve (16). The intake end of the air extraction pump (701) is connected with a filter mesh cover (702) through a threaded groove. The outlet end of the air extraction pump (701) is fixed with a connecting hose (703) by a clamp. One end of the connecting hose (703) is connected with one end of the intake valve (16) through a pipe joint.

3. A lightweight rocker arm according to claim 1, characterized in that: A vertical frame (10) is fixed by a bolt at one end of the top of the main rocker arm (4). An auxiliary wheel (11) is rotatably connected at the top of the vertical frame (10) by a bearing. A rope (12) is wound and fixed on the outside of the wire winding disc (602). The rope (12) passes through the top of the auxiliary wheel (11) and is fixed at the top of the sub-rocker arm (5) by a bolt.

4. A lightweight rocker arm according to claim 1, characterized in that: A structure seat (9) is fixed by a bolt at one end of the top of the main rocker arm (4) close to the structure frame (601). Handles (13) are connected by threaded grooves on both sides of the structure seat (9). A mounting plate (14) is welded at one end of the sub-rocker arm (5) away from the piston (18).

5. The lightweight rocker arm according to claim 1, characterized in that: The chassis (1), the column (2), the main rocker arm (4) and the sub-rocker arm (5) are all made of magnesium alloy material.

6. A lightweight rocker arm according to claim 1, characterized in that: Brakeable universal wheels (15) are equidistantly fixed by bolts at the bottom of the chassis (1).

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