CN104983191A - Lifting workbench - Google Patents

Abstract

The present invention is a liftable workbench, comprising a workbench, the lower ends of both sides of the workbench are respectively fixedly connected with fixed sleeves, and a telescopic plate is slidably arranged inside the fixed sleeves, and the inner lower ends of the fixed sleeves are The drive sprocket and the upper end are respectively provided with a driven sprocket and a driving sprocket. The driving sprocket is connected to and drives the driven sprocket through a transmission chain. Together, the lower end of the telescopic plate is fixedly connected with the workbench feet, the driving sprocket is installed on a transmission shaft, and the transmission shaft is provided with a worm gear, and the worm gear is engaged with a worm for transmission, and the worm is fixedly connected by one end The turn handle drive. The device of the invention adjusts the lifting height of the workbench by rotating the wrench, which is convenient for operation and has a wide application range.

Description

A liftable workbench

technical field

The invention relates to liftable workbench technology, in particular to a liftable workbench.

Background technique

In daily operations such as cleaning, changing lamps, equipment maintenance, etc., it is often encountered that the arm cannot reach and needs to stand on the table and chair. Generally, the height of the table and chair is not enough, and it is necessary to add a table and chair on top of the table and chair. , but the stability is not enough in this way, the height of the workbench can be adjusted to a suitable position through the handle, and the structure is stable and the height adjustment range is large.

Contents of the invention

The invention provides a liftable workbench aiming at the disadvantage that the height of the existing workbench cannot be adjusted, which solves the problem that the height of the original workbench cannot be adjusted.

In order to achieve the above-mentioned technical purpose and achieve the above-mentioned technical effect, the present invention is realized through the following technical solutions:

A liftable workbench, comprising a worktable, the lower ends of both sides of the worktable are respectively fixed with fixed sleeves, the fixed sleeves are slidably provided with telescopic plates, and the inner lower ends and upper ends of the fixed sleeves are respectively A driven sprocket and a driving sprocket are provided, and the driving sprocket is connected through a transmission chain to drive the driven sprocket. The expansion plate is provided with a connecting block, and the expansion plate is fixedly connected to one side of the transmission chain through the connecting block. The lower end of the telescopic plate is fixedly connected with the foot of the workbench. The driving sprocket is installed on a transmission shaft, and the transmission shaft is provided with a worm gear. drive.

Further, the driven sprocket is rotatably installed on the side of the fixed sleeve plate through the rotating shaft, and the transmission shaft is rotatably installed on the upper side of the fixed sleeve plate through the rolling bearing.

Further, a telescopic booster rod is arranged between the telescopic board and the fixed sleeve, the bottom end of the telescopic booster rod is fixed on the telescopic board by bolts, and the top end of the telescopic booster rod is fixed on the fixed sleeve board by a pin .

Further, the telescopic booster rod is a two-section telescopic rod, and multiple sets of corresponding bolt holes are provided on the two-section telescopic rods, and the telescopic limit is performed by inserting the bolts. One side of the bolt holes is marked with a scale, Used to display the height of the work surface.

Further, the rotating handle, worm and transmission shaft are arranged in the space formed by the working table and the fixed cover plate, the lower end of the working table is provided with a connecting piece with holes, and the rotating handle is connected to the connecting piece through the hole.

Further, a protective case is provided on the outside of the worm wheel and the worm, and the protective case cooperates with the worm to limit and fix the worm in vertical and lateral directions.

The beneficial effects of the present invention are:

By adopting the technical solution of the invention, the height of the workbench can be adjusted to a suitable position by rotating the handle, and the telescopic booster rod with self-locking position will not automatically return to the position under the action of external force after adjustment, which is convenient for the operator to work, and the structure is stable. The height adjustment range is large and can be adjusted quantitatively.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the internal structure of the present invention;

Fig. 3 is a partial enlarged view of the connection structure between the transmission chain and the expansion plate of the present invention;

Fig. 4 is a structural diagram of the telescopic booster rod of the present invention.

Explanation of symbols in the figure: 1. Expansion plate, 2. Fixed cover plate, 3. Working surface, 4. Telescopic booster rod, 5. Driven sprocket, 6. Rolling bearing, 7. Sprocket, 8. Drive shaft, 9 , worm gear, 10, protective shell, 11, transmission chain, 12, connecting piece, 13, rotating handle, 14, worm, 15, connecting block, 16, workbench foot, 17, bolt hole, 18, beam.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

As shown in Fig. 1, a liftable workbench includes a worktable 3, the lower ends of the two sides of the worktable 3 are respectively fixed with fixed sleeves 2, and the fixed sleeve 2 is provided with a telescopic plate 1 slidingly. , the lower end and the upper end of the fixed sleeve plate 2 are respectively provided with a driven sprocket 5 and a driving sprocket 7, and the driving sprocket 7 is connected to and drives the driven sprocket 5 through a transmission chain 11, and the telescopic plate 1 is provided with The connection block 15, the expansion plate 1 is fixedly connected with the drive chain 11 side through the connection block 15. In this embodiment, the connection block 15 and the expansion plate 1 are integrally structured, and the lower end of the expansion plate 1 is fixedly connected with a workbench foot 16. The driving sprocket 7 is installed on a transmission shaft 8, and the transmission shaft 8 is provided with a worm gear 9, and the worm gear 9 is engaged with a worm 14 for transmission, and the worm 14 is driven by a rotating handle 13 fixed at one end thereof .

The driven sprocket 5 is rotatably installed on the side of the fixed sleeve 2 through a rotating shaft, and the transmission shaft 8 is rotatably installed on the upper side of the fixed sleeve 2 through a rolling bearing 6 .

A telescopic booster rod 4 is arranged between the telescopic plate 1 and the fixed sleeve plate 2, the bottom end of the telescopic booster rod 4 is fixed on the telescopic plate 1 by bolts, and the top end of the telescopic booster rod 4 is fixed on the fixed Set on board 2.

The telescopic booster rod 4 is a two-section telescopic rod, and a plurality of sets of corresponding bolt holes 41 are provided on the two-section telescopic rods, and the telescopic limit is performed by inserting the bolts, so as to prevent the working surface 3 from automatically returning to its position after being subjected to external force. A scale is marked on one side of the bolt hole 17 for displaying the height of the worktable 3 .

The rotating handle 13, the worm 14 and the transmission shaft 8 are arranged in the space formed by the working surface 3 and the fixed cover plate 2, and the lower end of the working surface 3 is provided with a connecting piece 12 with a hole, and the rotating handle 13 is connected through the hole. in the connecting piece 12.

A protective case 10 is provided outside the worm wheel 9 and the worm 14 , and the protective case 10 cooperates with the worm 14 to limit and fix the worm 14 in vertical and lateral directions.

Action process and principle of the present invention:

When it is necessary to adjust the height of the work surface 3, unplug the bolt in the bolt hole 17 of the telescopic booster rod 4, hold the rotating handle 13 to rotate, and the rotating handle 13 drives the worm screw 14 connected to it at the other end to pass through the connection with the worm wheel 9. The meshing transmission turns the rotation of the rotating handle 13 into the transmission of the transmission shaft 8 and the driving sprocket 7. The driving sprocket 7 drives the transmission chain 11 and the driven sprocket 5 to rotate, and the transmission chain 11 drives the telescopic plate 1 to move up and down through the connecting block 15. After changing the height of the worktable 3 and adjusting to a suitable position, insert the bolts in the bolt holes 17 to lock the position, which has higher locking force and reliability than the self-locking structure of the general driven sprocket.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. A liftable workbench, including a workbench (3), characterized in that the lower ends of both sides of the workbench (3) are respectively fixed with fixed sleeves (2), and the fixed sleeves (2) A telescopic plate (1) is slidingly arranged inside, and the inner lower end and upper end of the fixed sleeve plate (2) are respectively provided with a driven sprocket (5) and a driving sprocket (7), and the driving sprocket (7) passes through the transmission chain (11) Connect and drive the driven sprocket (5), the expansion plate (1) is provided with a connection block (15), and the expansion plate (1) is fixed to one side of the transmission chain (11) through the connection block (15) Connected together, the lower end of the expansion plate (1) is fixedly connected with the workbench foot (16), and the driving sprocket (7) is installed on a transmission shaft (8), and the transmission shaft (8) is provided with a worm gear (9 ), the worm wheel (9) is engaged with a worm (14), and the worm (14) is driven by a rotating handle (13) affixed to one end thereof. 2. The smart meter with a built-in data transmission terminal power supply according to claim 1, characterized in that the driven sprocket (5) is rotatably installed on the side of the fixed sleeve plate (2) through a rotating shaft, and the transmission shaft ( 8) It is rotatably installed on the side of the upper end of the fixed sleeve plate (2) through the rolling bearing (6). 3. The smart meter with a built-in data transmission terminal power supply according to claim 1, characterized in that a telescopic booster rod (4) is provided between the telescopic plate (1) and the fixed cover plate (2), and the The bottom end of the telescopic booster rod (4) is fixed on the telescopic plate (1) by bolts, and the top end of the telescopic booster rod (4) is fixed on the fixed sleeve plate (2) by a pin shaft. 4. The smart meter with a built-in data transmission terminal power supply according to claim 3, characterized in that the telescopic booster rod (4) is a two-section telescopic rod, and multiple groups of corresponding bolts are arranged on the two-section telescopic rod The holes (17) are telescopically limited by inserting bolts, and one side of the bolt holes (41) is marked with a scale for displaying the height of the worktable (3). 5. The smart meter with built-in data transmission terminal power supply according to claim 1, characterized in that, the rotating handle (13), worm (14) and transmission shaft (8) are arranged on the working surface (3) and the fixed sleeve In the space surrounded by the board (2), a connecting piece (12) with a hole is provided at the lower end of the working surface (3), and the turning handle (13) is connected to the connecting piece (12) through the hole. 6. The smart meter with a built-in data transmission terminal power supply according to claim 1, characterized in that a protective case (10) is provided outside the worm wheel (9) and the worm (14), and the protective case (10) It cooperates with the worm (14) and is used to limit and fix the worm (14) in the vertical and lateral directions.