CN203715171U - Electric and manual adjustment type lifting device - Google Patents

Abstract

The utility model discloses an electric and manual adjustment type lifting device which comprises a lifting worktable, a screw rod assembly, a worm and gear assembly, a motor, a hand wheel, a first transmission part and a second transmission part, wherein the worm and gear assembly comprises a worm rod and a worm wheel engaged with the worm rod; the worm wheel is connected with the screw rod assembly; a motor transmission wheel and a manual transmission wheel are mounted at the two ends of the worm rod respectively; the first transmission part is connected with the motor and the motor transmission wheel of the worm rod; the second transmission part is connected with the hand wheel and the manual transmission wheel of the worm rod; the motor is used for roughly adjusting the height of the lifting worktable through the first transmission part, the worm and gear assembly and the screw rod assembly; the hand wheel is used for finely adjusting the height of the lifting worktable through the second transmission part, the worm and gear assembly and the screw rod assembly. According to the lifting device, the height of the lifting worktable can be quickly and accurately adjusted by combining quick rough adjustment of the motor with fine adjustment of the hand wheel.

Description

Electric manual double adjustment lifting device

technical field

The utility model relates to the field of mechanical equipment, in particular to an electric and manual double-adjustment lifting device. the

Background technique

At the commissioning site, the height of the lifting table is often adjusted manually or electrically. If it is manual debugging, since this type of structure is generally a structure with deceleration, it is very slow, time-consuming and laborious to debug; if it is electric debugging, due to the high speed of the motor, it can only be adjusted to an approximate position, and it needs to be started and stopped repeatedly. to the exact position. Both therefore have obvious flaws that lead to wasted working hours. the

Utility model content

In order to overcome the defects of the existing lifting device, the utility model provides an electric manual double-adjusting lifting device, which can quickly and efficiently adjust the height of the lifting workbench. the

In order to achieve the above purpose, the utility model provides an electric manual double-adjustment lifting device, which is characterized in that it includes a lifting table, a screw assembly connected to the lifting table, and a worm gear assembly connected to the bottom of the screw assembly. The electric manual double-adjustment lifting device also includes a motor, a hand wheel, a first transmission part, and a second transmission part. The worm gear assembly includes a worm and a worm gear meshed with the worm, and the worm gear is connected with the screw assembly. The two ends of the worm are respectively equipped with a motor transmission wheel and a manual transmission wheel, the first transmission part is connected with the motor transmission wheel of the motor and the worm, and the second transmission part is connected with the manual operation of the hand wheel and the worm. Transmission wheel; the motor roughly adjusts the height of the lifting table through the first transmission part, worm gear assembly and screw assembly, and the hand wheel adjusts the height of the lifting table through the second transmission part, worm assembly and screw assembly fine-tune the height. the

Further, the lifting table includes a main body and nuts fixed on both sides of the main body, the screw assembly includes a first screw and a second screw, the first screw and the second screw are respectively Engage with the nut. the

Further, the first screw rod is connected with the worm wheel of the worm gear assembly, the bottom end of the first screw rod is fixed with a screw drive wheel; the bottom end of the second screw rod is connected with another screw drive wheel, and the bottom end of the second screw rod is connected with another screw drive wheel. The screw driving wheel of the second screw mandrel is connected with the screw driving wheel of the first screw mandrel through a synchronous belt. the

Further, the screw assembly further includes two fixing seats, the bottoms of which respectively accommodate the screw drive wheel of the first screw rod and the screw drive wheel of the second screw rod. the

Further, the inner wall of each nut is provided with trapezoidal threads, and the first screw rod and the second screw rod are respectively trapezoidal screw rods. the

Further, the motor is a stepping motor, and the handwheel is a retractable handwheel. the

Compared with the prior art, the positive effect of the electric manual double-adjustment lifting device of the present invention is that it has two functions of manual adjustment and automatic adjustment at the same time. The height adjustment of the table becomes fast and accurate, thus saving working time, time and effort. the

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the electric manual double-adjustment lifting device of the present invention. the

Fig. 2 is a perspective view of the three-dimensional structure of the electric manual double-adjustment lifting device of Fig. 1 at another angle. the

Detailed ways

In order to make the technical solution of the utility model can be expressed more clearly, the utility model will be further described below in conjunction with the accompanying drawings. the

As shown in Figures 1 and 2, it is an electric manual double-adjustment lifting device of a preferred embodiment of the present invention, including a lifting table 10, a screw assembly 11 connected to the lifting table 10, and a screw assembly connected to the lifting table 10. 11 bottom worm gear assembly 14, motor 12, hand wheel 13, the first transmission part 16 connecting the motor 12 and the worm gear assembly 14, and the second transmission part 17 connecting the hand wheel 13 and the worm gear assembly 14. The motor 12 is a stepping motor in this embodiment, and the hand wheel 13 is a retractable hand wheel. the

The lift table 10 includes a main body (not shown in the figure) and nuts 101 and 102 fixed on both sides of the main body. The nuts 101, 102 are trapezoidal nuts in this embodiment, and the inner wall of each nut 101, 102 is provided with trapezoidal threads. The axes of the nuts 101, 102 are parallel to each other and extend vertically downward. the

Described screw mandrel assembly 11 comprises a first screw mandrel 115, the second screw mandrel 116, two holders 20, screw mandrel driving wheels 117,118 and the synchronous belt 119 that connects this screw mandrel driving wheels 117,118. The top end of the first threaded rod 115 is engaged with the nut 101 of the lifting table 10 . Both the first screw rod 115 and the second screw rod 116 are trapezoidal screw rods. The bottom end of the first threaded rod 115 is meshed with the worm gear assembly 14 first, and then passes through one of the fixing seats 20 to be fixedly connected with the threaded screw drive wheel 117 . the

The fixing seat 20 is fixed on the machine platform. Each fixing seat 20 is arranged in the shape of a "several", and the opening of the fixing seat 20 faces downward so as to receive the screw driving wheels 117 and 118 correspondingly. Bearings (not shown) are embedded in the middle of each fixing base 20 to cooperate with the installation of the first screw mandrel 115 or the second screw mandrel 116, so that the first screw mandrel 115 or the second screw mandrel 116 passes through the bearing Relatively corresponding fixed base 20 rotates. the

The bottom end of the second screw rod 116 directly passes through the middle of the fixing seat 20 , and then is fixedly connected with the screw rod driving wheel 118 . The synchronous belt 119 is connected to the screw drive wheel 117 and the screw drive wheel 118 , thereby synchronously connecting the first screw rod 115 and the second screw rod 116 . the

The worm gear assembly 14 is installed near the bottom end of the first screw rod 115 and fixed on the fixing seat 20 connected to the first screw rod 115 . The worm gear assembly 14 includes a worm 140 arranged laterally and a worm wheel (not shown) vertically engaged with the worm wheel 140 . In this embodiment, the worm gear is coaxial with the first screw rod 115 and fixedly connected to each other. A motor transmission wheel 142 and a manual transmission wheel 143 are respectively installed at two ends of the worm 140 . the

The output shaft of the motor 12 is connected to the motor drive wheel 142 of the worm gear assembly 14 through the first transmission part 16 . The handwheel 13 is connected with the manual transmission wheel 143 of the worm gear assembly 14 through the second transmission part 17 . the

During work, at first the height of the lifting table 10 is roughly adjusted, and the motor 12 is first started, and the worm 140 of the worm gear assembly 14 is driven by the first transmission part 16 and the motor drive wheel 142 to rotate rapidly, and the worm 140 is further driven by the worm gear. The first screw mandrel 115 rotates, and at the same time the first screw mandrel 115 drives the second screw mandrel 116 to rotate synchronously through the screw mandrel driving wheel 117, the synchronous belt 119, and the screw mandrel driving wheel 118, thereby simultaneously driving the nuts on both sides of the lifting table 10 101, 102, to realize fast and linear movement up and down, and then complete the preliminary adjustment of the lifting table 10;

When the height of the lifting table 10 is fine-tuned after the preliminary adjustment is completed, the handwheel 13 is manually driven, and the worm 140 of the worm gear assembly 14 is driven by the second transmission part 17 and the manual transmission wheel 143 to rotate at a slow speed, and the worm 140 passes through The worm wheel further drives the first screw mandrel 115 to rotate, while the first screw mandrel 115 drives the second screw mandrel 116 to rotate synchronously through the screw mandrel drive wheel 117, the synchronous belt 119, and the screw mandrel drive wheel 118, thereby simultaneously driving the lifting table 10 two The nuts 101 and 102 on the side can realize the micro-movement in a straight line up and down, thereby ensuring the precise adjustment of the lifting table 10. the

The above-mentioned embodiment only expresses one implementation mode of the utility model, and its description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims. the

Claims (6)

1. An electric manual double-adjustment lifting device is characterized in that: it includes a lifting table, a screw assembly connected to the lifting table, a worm gear assembly connected to the bottom of the screw assembly, and the electric manual double-adjusting lifting device also It includes a motor, a hand wheel, a first transmission part, and a second transmission part. The worm gear and worm assembly includes a worm and a worm meshed with the worm. The worm is connected to the screw assembly. The two ends of the worm are respectively A motor transmission wheel and a manual transmission wheel are installed, the first transmission part is connected to the motor transmission wheel of the motor and the worm, and the second transmission part is connected to the manual transmission wheel of the handwheel and the worm; the motor passes through The first transmission part, the worm gear assembly and the screw assembly make rough adjustments to the height of the elevating table, and the hand wheel fine-tunes the height of the elevating table through the second transmission part, the worm assembly and the screw assembly. the 2. The electric manual double-adjustment lifting device according to claim 1, wherein the lifting workbench includes a main body and nuts fixed on both sides of the main body, and the screw assembly includes a first screw . A second screw rod, the first screw rod and the second screw rod are respectively engaged with the nut. the 3. The electric manual double-adjustment lifting device as claimed in claim 2, characterized in that: the first screw rod is connected to the worm gear of the worm gear assembly, and the bottom end of the first screw rod is fixed with a screw drive wheel; The bottom end of the second screw mandrel is connected to another screw mandrel drive wheel, and the screw mandrel drive wheel of the second screw mandrel is connected with the screw mandrel drive wheel of the first screw mandrel through a timing belt. the 4. The electric manual double-adjustment lifting device as claimed in claim 3, characterized in that: the screw assembly also includes two fixing seats, the bottoms of the fixing seats respectively correspond to the screw driving wheel and the screw driving wheel for accommodating the first screw mandrel. And the screw driving wheel of the second screw mandrel. the 5 . The electric manual double-adjustment lifting device according to claim 2 , wherein the inner wall of each nut is provided with trapezoidal threads, and the first screw rod and the second screw rod are respectively trapezoidal screw rods. the 6. The electric manual double-adjustment lifting device according to any one of claims 1 to 5, characterized in that: the motor is a stepping motor, and the hand wheel is a retractable hand wheel. the