Double-arm shearing lifting device and lifting table

Abstract

The utility model relates to the technical field of lifting tables, in particular to a double-arm shearing lifting device and a lifting table, the lifting device comprises a bottom frame, a cross arm assembly and a driving piece, the bottom frame is arranged on the ground, the cross arm assembly comprises a first support arm and a second support arm, the middle parts of the first support arm and the second support arm are hinged, and the first support arm and the second support arm are arranged in a cross manner; one end of the driving part is rotationally connected with one end, facing the frame body, of the first support arm; a first rotating seat and two first sliding rails are arranged on the bottom frame, the first rotating seat and the first sliding rails are located at the two ends of the inner side of the bottom frame respectively, and the two first sliding rails are arranged in parallel in the length direction of the bottom frame; the end, facing the bottom frame, of the first supporting arm is located between the two first sliding rails and rotationally connected with the two first sliding rails, and the end, facing the bottom frame, of the second supporting arm is rotationally connected with the first rotating base. And the lifting table is controlled to hover at any position through the double-arm shearing structure, so that the production cost is reduced, and transportation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting desks, in particular to a double-arm shearing lifting device and a lifting desk. Background Art

[0002] A lifting desk is a type of office desk whose height can be adjusted, aiming to help users easily switch between a sitting position and a standing position, so as to improve the working posture, reduce the health risks brought by long-term sitting, and enhance the working comfort.

[0003] The structural form of the lifting desk mostly adopts the cross-arm structure. To ensure the hovering and supporting effects of the lifting desk, the three-arm cross-support method is mostly used in the related art. By controlling the driving member, the included angle between the two cross-arms is changed to change the supporting height, and the other cross-arm is used to assist in supporting the tabletop of the lifting desk. However, due to the limitation of its structure, the three-arm cross-support method makes the self-weight of the lifting desk relatively large, which is not convenient for transportation and difficult to reduce the production cost.

[0004] The information disclosed in this background art section is only intended to deepen the understanding of the overall background art of the present utility model, and should not be regarded as an admission or any form of implication that this information constitutes the prior art known to those skilled in the art. Summary of the Utility Model

[0005] The technical problem to be solved by the present utility model is: to provide a double-arm shearing lifting device and a lifting desk, which can control the lifting desk to hover at any position through the double-arm shearing structure, reduce the production cost, and facilitate transportation.

[0006] To achieve the above object, the technical solution adopted by the present utility model is: a double-arm shearing lifting device, comprising: a bottom frame, a cross-arm assembly and a driving member. The bottom frame is arranged on the ground and is a quadrilateral frame structure. The cross-arm assembly includes a first support arm and a second support arm. The middle parts of the first support arm and the second support arm are hinged, and the first support arm and the second support arm are cross-arranged. One end of the driving member is rotatably connected to one end of the first support arm facing the frame, and the other end is rotatably connected to the second support arm.

[0007] Wherein, a first rotating seat and two first sliding rails are respectively arranged on the bottom frame. The first rotating seat and the first sliding rails are respectively located at both ends inside the bottom frame, and the two first sliding rails are arranged parallel to each other along the length direction of the bottom frame. One end of the first support arm facing the bottom frame is located between the two first sliding rails and is rotatably connected to the two first sliding rails. One end of the second support arm facing the bottom frame is rotatably connected to the first rotating seat.

[0008] Further, a second rotating seat is provided at one end of the first arm away from the bottom frame, and the end of the first arm is rotatably connected to the second rotating seat.

[0009] Further, two second sliding rails are provided at one end of the second arm away from the bottom frame. The two second sliding rails are arranged in parallel and respectively correspond to the two first sliding rails. The end of the second arm is located between the two second sliding rails and is slidably connected to the two second sliding rails.

[0010] Further, both the first arm and the second arm include a main arm body, a secondary rod body, and a hinge point. The secondary rod body is provided at one end of the main arm body, and the axis of the secondary rod body is perpendicular to the length direction of the main arm body. The hinge point is provided in the middle of the length direction of the main arm body. The hinge point of the first arm and the hinge point of the second arm are arranged opposite to each other, and the hinge point of the first arm and the hinge point of the second arm are connected by a rotating shaft.

[0011] Further, a third rotating seat is provided on the secondary rod body of the first arm, and a fourth rotating seat is provided on the main arm body of the second arm. The driving member is rotatably provided on the third rotating seat, and the output end is rotatably connected to the fourth rotating seat.

[0012] Further, square rollers are connected to both ends of the secondary rod bodies of the first arm and the second arm, and the square rollers are slidably arranged in the first sliding rail or the second sliding rail.

[0013] Further, the driving member is an electric push rod or a brushless motor.

[0014] The present utility model further provides a lifting table, which includes the double-arm shearing lifting device as described above, and further includes a tabletop. The tabletop is arranged parallel to the bottom frame, and one side of the tabletop is fixedly connected to one end of the cross-arm assembly away from the bottom frame.

[0015] Further, it further includes a keyboard tray and a keyboard bracket. The keyboard tray is arranged parallel to the tabletop and is located on one side of the tabletop. There are two keyboard brackets, which are respectively located at both ends of the keyboard tray. Both ends of the keyboard bracket are fixedly connected to the end face of the keyboard tray and the bottom surface of the tabletop respectively.

[0016] Further, a controller is fixedly provided on one side of the bottom surface of the tabletop facing the keyboard tray, and at least two buttons, namely an up button and a down button, are provided on the controller.

[0017] The beneficial effects of the present utility model are as follows: The present utility model forms a cross structure by arranging a first support arm and a second support arm hinged at the middle position. Through the control of the driving member, the included angle between the two support arms can be changed, so as to realize the adjustment of the height of the lifting table and the hovering action at different heights. It has strong flexibility and adaptability. Moreover, the bottom frame of the quadrilateral frame structure provides a good stable support point for the cross-arm assembly, ensuring the safety of the lifting device during use. Compared with the traditional three-arm cross-support method, the double-arm shear lifting device simplifies the structure, reduces the production cost, and at the same time, due to the simplified structure, it is also convenient for transportation and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the double-arm shear lifting device in the embodiment of the present utility model;

[0020] Figure 2 It is a schematic structural diagram of the cross-arm assembly in the embodiment of the present utility model;

[0021] Figure 3 It is a schematic structural diagram of the first support arm in the embodiment of the present utility model;

[0022] Figure 4 It is a schematic structural diagram of the second support arm in the embodiment of the present utility model;

[0023] Figure 5 It is a schematic structural diagram of the bottom frame in the embodiment of the present utility model;

[0024] Figure 6 It is a schematic structural diagram of the lifting table in the embodiment of the present utility model.

[0025] Reference numerals: 1, table board; 2, keyboard support board; 3, keyboard bracket; 4, hand controller; 10, bottom frame; 11, first rotating seat; 12, first slide rail; 20, cross-arm assembly; 20a, main arm body; 20b, auxiliary rod body; 20c, hinge point; 20d, rotating shaft; 20e, square roller; 21, first support arm; 22, second support arm; 23, second rotating seat; 24, second slide rail; 25, third rotating seat; 26, fourth rotating seat; 30, driving member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manner.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] As Figures 1 to 5 shown, the double-arm shearing lifting device and the lifting table include: a bottom frame 10, a cross-arm assembly 20 and a driving member 30. The bottom frame 10 is arranged on the ground and is a quadrilateral frame structure. The cross-arm assembly 20 includes a first support arm 21 and a second support arm 22. The middle parts of the first support arm 21 and the second support arm 22 are hinged, and the first support arm 21 and the second support arm 22 are arranged crosswise. One end of the driving member 30 is rotatably connected to one end of the first support arm 21 facing the frame, and the other end is rotatably connected to the second support arm 22.

[0030] Among them, a first rotating seat 11 and two first sliding rails 12 are respectively arranged on the bottom frame 10. The first rotating seat 11 and the first sliding rails 12 are respectively located at both ends inside the bottom frame 10, and the two first sliding rails 12 are arranged parallel to each other along the length direction of the bottom frame 10. One end of the first support arm 21 facing the bottom frame 10 is located between the two first sliding rails 12 and is rotatably connected to the two first sliding rails 12. One end of the second support arm 22 facing the bottom frame 10 is rotatably connected to the first rotating seat 11.

[0031] The utility model forms a cross structure by arranging a first support arm 21 and a second support arm 22 hinged at the middle position. Through the control of a driving member 30, the included angle between the two support arms can be changed, so as to realize the adjustment of the height of the lifting table and the hovering action at different heights. It has strong flexibility and adaptability. Moreover, the bottom frame 10 of the quadrilateral frame structure provides a good stable support point for the cross-arm assembly 20, ensuring the safety of the lifting device during use. Compared with the traditional three-arm cross-support method, the double-arm shear lifting device simplifies the structure, reduces the production cost, and at the same time, due to the simplified structure, it is also convenient for transportation and installation.

[0032] Specifically, during operation, through the driving of the driving member 30, the included angle between the first support arm 21 and the second support arm 22 is changed. As the included angle changes, the end of the first support arm 21 rotates relative to the first slide rail 12 and slides along the length direction of the first slide rail 12, changing the relative position between the end of the first support arm 21 and the bottom frame 10, so as to realize the adjustment of the height of the lifting device.

[0033] On the basis of the above embodiment, a second rotating seat 23 is arranged at one end of the first support arm 21 away from the bottom frame 10. The end of the first support arm 21 is rotatably connected to the second rotating seat 23. By providing the second rotating seat 23 as an additional support point, the sway of the first support arm 21 is reduced when the lifting device operates, improving the overall stability of the lifting device.

[0034] On the basis of the above embodiment, two second slide rails 24 are arranged at one end of the second support arm 22 away from the bottom frame 10. The two second slide rails 24 are arranged in parallel and respectively correspond to the two first slide rails 12. The end of the second support arm 22 is located between the two second slide rails 24 and is slidably connected to the two second slide rails 24. By arranging the second slide rails 24, the end of the second support arm 22 rotates relative to the second slide rails 24 and slides along the length direction of the second slide rails 24, so as to change the relative position of the end of the second support arm 22 in the second slide rails 24. At the same time, the second slide rails 24 cooperate with the second rotating seat 23 to form a three-point support structure, ensuring the stability of the table board 1 subsequently arranged on the lifting mechanism.

[0035] It should be noted that the second rotating seat 23 and the second slide rails 24 are located in the same plane, so that the table board 1 subsequently arranged on the second rotating seat 23 and the second slide rails 24 is in a horizontal state, forming a horizontal supporting surface and ensuring the safety of use.

[0036] Based on the above embodiments, both the first support arm 21 and the second support arm 22 include a main arm body 20a, an auxiliary rod body 20b, and a hinge point 20c. The auxiliary rod body 20b is arranged at one end of the main arm body 20a, and the axis of the auxiliary rod body 20b is perpendicular to the length direction of the main arm body 20a. The hinge point 20c is arranged in the middle of the length direction of the main arm body 20a, and the hinge point 20c of the first support arm 21 and the hinge point 20c of the second support arm 22 are arranged opposite to each other, and the hinge point 20c of the first support arm 21 and the hinge point 20c of the second support arm 22 are connected by a rotating shaft 20d; the arrangement of the main arm body 20a and the auxiliary rod body 20b enhances the structural rigidity of the entire lifting table, making the lifting process more stable; the arrangement of the hinge point 20c allows the first support arm 21 and the second support arm 22 to rotate in the middle, so as to realize the synchronous lifting of the first support arm 21 and the second support arm 22, providing more adjustment angles and heights to meet the needs of different users, and ensuring the stability of the cross-arm assembly 20 during the lifting process, and also facilitating maintenance and replacement.

[0037] Based on the above embodiments, a third rotating seat 25 is arranged on the auxiliary rod body 20b of the first support arm 21, and a fourth rotating seat 26 is arranged on the main arm body 20a of the second support arm 22. The driving member 30 is rotatably arranged on the third rotating seat 25, and the output end is rotatably connected to the fourth rotating seat 26; the third rotating seat 25 and the fourth rotating seat 26 provide installation and support points for the driving member 30, ensuring the stability of the installation position of the driving member 30, and at the same time enabling the driving member 30 to realize the relative rotation effect on the first support arm 21 and the second support arm 22 during operation, ensuring that the lifting action can be executed normally and stably.

[0038] Based on the above embodiments, square rollers 20e are connected to both ends of the auxiliary rod bodies 20b of the first support arm 21 and the second support arm 22, and the square rollers 20e are slidably arranged in the first slide rail 12 or the second slide rail 24; by arranging the square rollers 20e, the friction and noise of the support arm on the slide rail are reduced, making the lifting action smoother and quieter, and ensuring the stability of the ends of the first support arm 21 and the second support arm 22 connected to the square rollers 20e in the first slide rail 12 and the second slide rail 24, reducing the swing or deviation caused by friction.

[0039] Based on the above embodiments, the driving member 30 is an electric push rod or a brushless motor. The electric push rod and the brushless motor can provide stable thrust or torque, ensuring the smoothness during the lifting process, and avoiding manually controlling the driving member 30 to execute the driving action, with simple and convenient operation.

[0040] As Figure 6As shown, the utility model also provides a lifting table, including the double-arm shear lifting device as above, and also including a table top 1, the table top 1 and the bottom frame 10 are arranged parallel to each other, and one side of the table top 1 is fixedly connected to the end of the cross arm assembly 20 away from the bottom frame 10; the table top 1 provides a working and receiving plane, which is convenient for work, and the table top 1 is fixedly connected to the cross arm assembly 20 on one side, ensuring the stability of the desktop during the lifting process, and preventing the desktop from tilting or shaking when adjusting the height.

[0041] On the basis of the above embodiment, it also includes a keyboard tray 2 and a keyboard bracket 3. The keyboard tray 2 and the table board 1 are arranged parallel to each other and are located on one side of the table board 1. Two keyboard brackets 3 are arranged, which are respectively located at the two ends of the keyboard tray 2. The two ends of the keyboard tray 3 are respectively fixedly connected to the end surface of the keyboard tray 2 and the bottom surface of the table board 1; the design of the keyboard bracket 3 makes the connection between the keyboard tray 2 and the table board 1 stable, thereby ensuring the stability of the keyboard tray 2 during use and avoiding shaking. The keyboard tray 2 is located on one side of the table board 1, which can effectively utilize the desktop space while keeping the working area clean and orderly, and the keyboard tray 2 forms a height difference with the table board 1, which helps to improve the working posture and reduce the fatigue of the wrists and shoulders.

[0042] On the basis of the above embodiment, a hand controller 4 is fixedly arranged on one side of the bottom surface of the table top 1 facing the keyboard tray 2. The hand controller 4 is provided with at least two buttons for raising and lowering, so that the user can easily touch the buttons on the hand controller 4 when working, and realize the corresponding raising or lowering action of the lifting table by pressing the corresponding button, which is simple and convenient to operate.

[0043] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description are only for explaining the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A double-arm shearing lifting device, characterized in that, include: A bottom frame, a cross arm assembly and a driving member, wherein the bottom frame is arranged on the ground and is a quadrilateral frame structure, the cross arm assembly comprises a first support arm and a second support arm, the middle part of the first support arm and the middle part of the second support arm are hinged, and the first support arm and the second support arm are arranged crosswise, one end of the driving member is connected to the first support arm in rotation toward one end of the frame, and the other end is connected to the second support arm in rotation; Among them, the bottom frame is respectively provided with a first rotating seat and two first slide rails, the first rotating seat and the first slide rails are respectively located at the two ends of the inner side of the bottom frame, and the two first slide rails are arranged parallel to each other along the length direction of the bottom frame; the first support arm is located between the two first slide rails at one end facing the bottom frame and is rotatably connected to the two first slide rails, and the second support arm is rotatably connected to the first rotating seat at one end facing the bottom frame.

2. The double-arm shearing lifting device according to claim 1, characterized in that, A second rotating seat is arranged at one end of the first supporting arm away from the bottom frame, and the end of the first supporting arm is rotatably connected to the second rotating seat.

3. The double-arm shearing lifting device according to claim 1, characterized in that Two second slide rails are arranged at one end of the second support arm away from the bottom frame. The two second slide rails are arranged parallel to each other and correspond to the two first slide rails respectively. The end of the second support arm is located between the two second slide rails and is slidably connected to the two second slide rails.

4. The double-arm shearing lifting device according to claim 3, wherein The first arm and the second arm each include a main arm body, an auxiliary rod body and a hinge point, the auxiliary rod body is arranged at one end of the main arm body, and the axis of the auxiliary rod body is arranged perpendicular to the length direction of the main arm body, the hinge point is arranged in the middle of the length direction of the main arm body, and the hinge point of the first arm is arranged opposite to the hinge point of the second arm, and the hinge point of the first arm and the hinge point of the second arm are connected by a rotating shaft.

5. The double-arm shearing lifting device according to claim 4, wherein A third rotating seat is arranged on the auxiliary rod body of the first arm, a fourth rotating seat is arranged on the main arm body of the second arm, the driving member is rotatably arranged on the third rotating seat, and the output end is rotatably connected to the fourth rotating seat.

6. The double-arm shearing lifting device according to claim 5, characterized in that, Both ends of the auxiliary rod bodies of the first support arm and the second support arm are connected with square rollers, and the square rollers are slidably arranged in the first slide rail or the second slide rail.

7. The double-arm shearing lifting device according to claim 1, wherein, The driving member is an electric push rod or a brushless motor.

8. A lifting table, comprising the double-arm shearing lifting device according to any one of claims 1 to 7, characterized in that, It also includes a table top, which is arranged parallel to the bottom frame, and one side of the table top is fixedly connected to an end of the cross arm assembly away from the bottom frame.

9. The lifting table according to claim 8, wherein It also includes a keyboard tray and a keyboard bracket. The keyboard tray and the table top are arranged parallel to each other and are located on one side of the table top. Two keyboard brackets are provided, which are respectively located at the two ends of the keyboard tray. The two ends of the keyboard bracket are respectively fixedly connected to the end surface of the keyboard tray and the bottom surface of the table top.

10. The lifting table according to claim 9, characterized in that, A hand controller is fixedly arranged on one side of the bottom surface of the table top facing the keyboard support plate, and the hand controller is provided with at least two buttons, namely, an up button and a down button.

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