CN111186787B - Lifting table - Google Patents

Abstract

The invention provides a lifting table, which relates to the field of plane operation equipment and comprises a bracket, an operation table and a lifting mechanism, wherein the lifting mechanism comprises a plurality of rotating sheets and push rods, one ends of the rotating sheets are hinged to the bracket; the free ends of the rotating plates are also connected with the operating platform through connecting plates, one ends of the connecting plates are hinged with the rotating plates, the free ends of all the rotating plates are also hinged with the flat pushing frame, one end of the pushing rod is hinged on the support or the operating platform, the other end of the pushing rod is hinged on the flat pushing frame, and when the front end of the pushing rod is positioned at one end of the working path, the front end of the pushing rod is just parallel to the ground and the operating platform is in the highest state; when the front end of the push rod is positioned at the other end of the working path, the front end of the push rod is just parallel to the ground, and the operating platform is in the lowest state. The push rod of the flat pushing mechanism is parallel to the ground and can generate the maximum holding force or starting force when in the highest or lowest state of the operation table, so that the operation table can be stably started and kept in the highest state.

Description

Lifting table

Technical Field

The invention relates to the field of plane operation equipment, in particular to a lifting table.

Background

In plane operations, such as operations, disassembly and material display, a large horizontal operation table is needed to be utilized in many platform operations, the horizontal operation table often needs a high-low lifting function, lifting structures adopted in the prior art are more, and a scissor fork structure and a push rod structure are commonly used, but the scissor fork structure can change a supporting point, so that one end of the lifting table is far away from the supporting point, the edge is easy to shake due to stress, and smoothness and stability in plane operations are difficult to meet. When the push rod structure is adopted, the thrust and theory of the push rod are always somewhat different, so that when the push rod is adopted, a larger thrust specification is often selected than that when budget is adopted, and more energy is required in the use process.

Disclosure of Invention

The invention aims to solve the technical problem that the push force of a push rod is larger than a theoretical value in the prior art by providing a lifting table aiming at the defects in the prior art.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the lifting platform comprises a bracket, an operation platform and a lifting mechanism, wherein the lifting mechanism comprises a plurality of rotating sheets and push rods, one ends of the rotating sheets and the push rods are hinged to the bracket; the free ends of the rotating plates are also connected with the operating platform through connecting plates, one ends of the connecting plates are hinged with the rotating plates, the free ends of all the rotating plates are also hinged with the flat pushing frame, one end of the pushing rod is hinged on the support or the operating platform, the other end of the pushing rod is hinged on the flat pushing frame, and when the front end of the pushing rod is positioned at one end of the working path, the front end of the pushing rod is just parallel to the ground and the operating platform is in the highest state; when the front end of the push rod is positioned at the other end of the working path, the front end of the push rod is just parallel to the ground, and the operating platform is in the lowest state.

As described in the scheme, the invention has the beneficial technical effects that:

1. the invention adopts the push rod to push the rotating piece to rotate, changes the height of the free end of the rotating piece and then changes the height of the lifting frame, realizes lifting, and ensures that the connection position of the connecting plate and the operating platform is unchanged before and after lifting and the support is stable.

2. In general, the operation on the lifting platform needs larger starting force and supporting force under the lowest and highest conditions, and in the highest and lowest conditions, the push rod is horizontal, has no component force in the vertical direction, the thrust utilization rate reaches the maximum, and the thrust required by the push rod is consistent with the theoretical value.

Drawings

FIG. 1 is a three-dimensional schematic view of a lift console in an embodiment;

FIG. 2 is a schematic view of the highest state of the lifting console in the embodiment;

FIG. 3 is a schematic view showing the lowest state of the lifting operation table in the embodiment;

FIG. 4 is an enlarged view of FIG. 1 at a second connection plate;

fig. 5 is a schematic view of the change in position of the push rod and the second connecting plate.

Wherein, support 1, operation panel 2, push rod 3, rotor 4, horizon bar 5, flat push rod 6, first connecting plate 7, second connecting plate 8, connecting axle 9, link plate 10, truckle 11.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present invention more clear and easy to understand, the present invention is further described below with reference to the accompanying drawings and the detailed description:

referring to fig. 1 to 4, the invention discloses a lifting table, which comprises a bracket 1, an operation table 2 and a lifting mechanism, wherein the lifting mechanism comprises a plurality of rotating plates 4 and push rods 3, one ends of which are hinged on the bracket 1; the free ends of the rotating plates 4 are also connected with the operating platform 2 through connecting plates 10, one ends of the connecting plates 10 are hinged with the rotating plates 4, the free ends of all the rotating plates 4 are also hinged with a flat pushing frame, one end of a push rod 3 is hinged on the support 1 or the operating platform 2, the other end of the push rod 3 is hinged on the flat pushing frame, and when the front end of the push rod 3 is positioned at one end of a working path, the front end of the push rod is just parallel to the ground and the operating platform 2 is positioned at the highest state; when the front end of the push rod 3 is positioned at the other end of the working path, the front end is just parallel to the ground, and the operating platform 2 is in the lowest state. When the operation table 2 is at the lowest position, a large starting force is required to ascend; at the highest position, the operation table 2 is often subjected to some stress operation, and a large holding force is required. If the push rod 3 is not horizontal and has a component force in the vertical direction, a certain thrust is wasted, which is why the push rod 3 always has to choose more thrust than theoretically needed. When the push rod 3 is kept horizontal in the two states, the thrust calculated by the angle and the hinge position of the rotary piece is not much different from the actual required thrust, and the push rod 3 with slightly larger thrust is selected. The main reason for this problem, which has not been solved by one skilled in the art, is that it is not intuitive to think whether the two states can be achieved at the same time, and in conventional designs the angle of the push rod 3 is always increased or decreased. In the concrete installation, in order to have sufficient installation position, be equipped with first connecting plate 7 on the operation panel 2, push rod 3 front end articulates on first connecting plate 7, be equipped with second connecting plate 8 on the rotor plate 4, the flat pushing frame with second connecting plate 8 articulates. The first connecting plate 7 and the second connecting plate 8 pull one end of the push rod 3 down, and the other end is pulled up, so that the push rod 3 can be horizontally realized at least in a certain angle, and even one end connected to the flat pushing frame can be higher than one end connected to the operating platform 2. Of course, the first connection plate 7 and the second connection plate 8 can also be obtained by corresponding positional deformations. The two rotating plates 4 which are oppositely arranged are fixed through the connecting shaft 9, and the rotation of the rotating plates 4 can be realized by controlling the movement of the connecting shaft 9. In the ascending process, the free end of the rotating plate 4 is always ascending, the operating platform 2 is the same as the ascending, the push rod 3 is wanted to be horizontal in the highest state and the lowest state, the second connecting plate 8 is at a certain angle with the rotating plate 4, the highest point of the second connecting plate 8 is changed from the highest to the lowest relative to the rotating plate 4, the positions of the hinged position of the second connecting plate 8 and the horizontal rod 5 and the positions of the hinged position of the push rod 3 and the first connecting plate 7 are changed as shown in fig. 5, arrows indicate the moving relative movement track of the horizontal frame, and the relative horizontal position is unchanged before and after the movement. If the position where the push rod 3 is hinged to the first connecting plate 7 is the same as the height of the two points, the push rod 3 is in a horizontal state at the highest and lowest positions of the elevating platform. In the process, after the rotation angle of the second connecting plate 8 in the lifting process is determined, the angle formed by the free end of the second connecting plate 8 and the vertical direction is half of the rotation angle.

The horizontal pushing frame comprises two horizontal rods 5 which are parallel to each other and a horizontal pushing rod 6 fixedly connected with the two horizontal rods 5, two ends of the horizontal rods 5 are respectively hinged with the two rotating sheets 4, and the hinge shaft is parallel to the width direction of the operating platform 2. In actual installation, the rotating plates 4 are arranged in four, the positions are stable and not wasted, the flat pushing frame is used for controlling the four rotating plates 4 to move simultaneously, the flat pushing frame moves simultaneously under the condition of consistent initial angles, and the flat pushing frame is always kept horizontal. The effect can be achieved by other connecting modes, and the rotary pieces 4 can move consistently.

The push rod 3 is driven by a motor. The electric push rod 3 has higher precision and is convenient to set and control. The bottom of the bracket 1 is provided with a plurality of casters 11, which is convenient for moving and using. The support 1 is provided with a buffer part, and the lifting platform can be partially supported by the buffer part after falling down.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.

Claims (4)

1. The lifting platform comprises a bracket (1), an operating platform (2) and a lifting mechanism, and is characterized in that the lifting mechanism comprises a plurality of rotating sheets (4) and push rods (3) with one ends hinged on the bracket (1); the free ends of the rotating pieces (4) are further connected with the operating platform (2) through connecting plates (10), one ends of the connecting plates (10) are hinged with the rotating pieces (4), the free ends of all the rotating pieces (4) are further hinged with the flat pushing frame, two rotating pieces (4) which are oppositely arranged are fixed through connecting shafts (9), a first connecting plate (7) is arranged on the operating platform (2), the front ends of the push rods (3) are hinged on the first connecting plate (7), and second connecting plates (8) are arranged on the rotating pieces (4);

the horizontal pushing frame comprises two horizontal rods (5) which are parallel to each other and a horizontal pushing rod (6) which is fixedly connected with the two horizontal rods (5), two ends of the horizontal rods (5) are respectively hinged with two second connecting plates (8), the hinge shafts are parallel to the width direction of the operating table (2), and the rear end of the pushing rod (3) is hinged on the horizontal pushing rod (6);

when the front end of the push rod (3) is positioned at one end of the working path, the push rod is just parallel to the ground, and the operating platform (2) is in the highest state; when the front end of the push rod (3) is positioned at the other end of the working path, the push rod is just parallel to the ground, and the operating platform (2) is in the lowest state.

2. A lifting platform according to claim 1, characterized in that the push rod (3) is driven by a motor.

3. A lifting platform according to any one of claims 1-2, characterized in that the bottom of the frame (1) is provided with casters (11).

4. A lifting platform according to claim 3, characterized in that the support (1) is provided with cushioning elements.