Three-dimensional displacement lifting device

Abstract

The utility model relates to the technical field of lifting tables, and provides a three-dimensional displacement lifting device which comprises a base, a fixing frame, a lifting frame, a driving mechanism and a sliding mechanism. The driving mechanism is used for driving the lifting frame to move; the sliding mechanism comprises a roller, and the roller is rotationally arranged on the lifting frame, abuts against the side wall of the fixed frame and is in rolling connection with the side wall of the fixed frame; the number of the idler wheels is at least three, and the idler wheels are used for limiting the lifting frame so that the lifting frame can slide on the fixing frame in the vertical direction. According to the three-dimensional displacement lifting device, the idler wheels are arranged on the lifting frame and can move along with lifting of the lifting frame, so that the number of the idler wheels is reduced, the production and maintenance cost of the three-dimensional displacement lifting device is reduced, the lifting frame is limited through the idler wheels, transverse deviation of the lifting frame in the lifting process can be avoided, and the production efficiency is improved. Therefore, the lifting stability of the three-dimensional displacement lifting device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting platforms, in particular to a three-dimensional displacement lifting device. Background Art

[0002] The three-dimensional displacement lifting device is a lifting and conveying equipment with horizontal movement spacing. It has been widely used in factories, warehousing and logistics and other fields. In order to improve the lifting stability of the lifting platform, a structure for limiting the lifting platform is usually designed in the lifting device.

[0003] Patent publication number CN108275609A discloses a lifting platform for machining. To address the problem of existing platforms with one end easily tilting up and slow lifting, the following solution is proposed: a box with an open top and a set of parallel side walls inside the box each equipped with roller assemblies evenly arranged along the height of the box. A table is provided above the box, with a first vertical plate and a second vertical plate welded to the ends of the side edges of the table near the box, the first and second vertical plates being perpendicular to the table, the first and second vertical plates being parallel, the first and second vertical plates being located inside the box, the first and second strip grooves being provided on the sides of the first and second vertical plates adjacent to each other, and first and second racks being installed inside the first and second strip grooves, respectively. The invention has a fast lifting speed, precise control, can prevent the table from tilting up, is easy to operate, and has excellent safety performance.

[0004] In the above technical solution, in order to improve the lifting stability of the table top, a roller group is set on one of the parallel side walls in the box body, so that the guide roller can roll and fit with the first vertical plate and the second vertical plate. However, in order to meet the lifting requirements of the table top, multiple roller groups need to be set in the box body along the moving direction of the table top, which not only increases the processing cost of the lifting platform, but also makes it inconvenient for subsequent maintenance. Utility Model Content

[0005] In view of this, the present invention proposes a three-dimensional displacement lifting device, which can reduce the number of rollers used and reduce the production and maintenance costs of the three-dimensional displacement lifting device while ensuring the lifting stability of the lifting frame.

[0006] The technical solution of the present invention is implemented as follows: The present invention provides a three-dimensional displacement lifting device, including a base, a fixing frame, a lifting frame, a driving mechanism and a sliding mechanism, wherein:

[0007] The fixing frame is fixedly arranged on the base;

[0008] The driving mechanism is used to drive the lifting frame to move;

[0009] The sliding mechanism includes a roller, which is rotatably arranged on the lifting frame and abuts against and rolls against the side wall of the fixed frame;

[0010] At least three rollers are provided for limiting the position of the lifting frame so that the lifting frame slides on the fixing frame in a vertical direction.

[0011] On the basis of the above technical solution, preferably, the fixing frame includes a frame body and a slide rail, wherein:

[0012] The slide rail is fixedly arranged on the frame, and a plurality of the slide rails are provided, and the plurality of slide rails are symmetrically arranged about the center line of the frame;

[0013] The roller is in contact with the side wall of the slide rail and is rollingly linked. The cross section of the slide rail is rectangular. One of the side walls of the slide rail is parallel to the side wall of the frame close to the slide rail. Rollers are provided on the other three side walls of the slide rail.

[0014] More preferably, the sliding mechanism further comprises a plurality of limit frames, which are fixedly mounted on the lifting frame and correspond one to one with the number and position of the slide rails;

[0015] The limiting frame is provided with an accommodating groove, and the side wall of the slide rail connected to the roller is at least partially located in the accommodating groove.

[0016] More preferably, the side wall of the slide rail is spaced apart from the side wall in the accommodating groove.

[0017] More preferably, the sliding mechanism further includes cleaning cotton, and the cleaning cotton is fixedly arranged in each of the accommodating grooves, and the side wall of the slide rail connected to the roller is in contact with the cleaning cotton and is slidably connected.

[0018] More preferably, the frame body is a rectangular parallelepiped frame structure, the lifting frame is arranged in the frame body, and the roller, the limiting frame and the cleaning cotton are arranged outside the frame body.

[0019] More preferably, two cleaning cottons are provided on each of the slide rails, and the plurality of rollers connected to the same slide rail are all located between the two cleaning cottons connected to the slide rail.

[0020] On the basis of the above technical solution, preferably, the driving mechanism includes a first motor, a gear and a rack, wherein:

[0021] The first motor is fixedly arranged on the lifting frame;

[0022] The gear is fixedly arranged on the output shaft of the first motor and is coaxially arranged therewith;

[0023] The rack is fixed on the fixing frame, and the gear is meshed with the rack.

[0024] On the basis of the above technical solution, preferably, the base includes a mounting plate, a movable plate, a bottom plate, a second motor and a screw rod, wherein,

[0025] The fixing frame is fixedly arranged on the top side of the mounting plate, and the movable plate is slidably arranged on the bottom side of the mounting plate;

[0026] The bottom plate is slidably arranged on the bottom side of the movable plate, and the sliding direction of the bottom plate is perpendicular to the sliding direction of the movable plate;

[0027] The second motor is fixedly mounted on the movable plate and the bottom plate respectively;

[0028] The screw rod is rotatably arranged on the movable plate and the base plate respectively, and the screw rod on the movable plate is coaxially fixedly connected to the output shaft of the second motor on the movable plate, and is connected to the mounting plate through threaded fitting. The screw rod on the base plate is coaxially fixedly connected to the output shaft of the second motor on the base plate, and is connected to the movable plate through threaded fitting.

[0029] More preferably, it further includes limit switches, two limit switches are relatively fixed on the fixed frame, the movable plate and the bottom plate, and the lifting frame selectively abuts the two limit switches on the fixed frame, the mounting plate selectively abuts the two limit switches on the movable plate, and the movable plate selectively abuts the two limit switches on the bottom plate.

[0030] The three-dimensional displacement lifting device of the utility model has the following beneficial effects compared with the prior art:

[0031] (1) By arranging rollers on the lifting frame, the rollers can be moved along with the lifting frame, thereby reducing the number of rollers used and reducing the production and maintenance costs of the three-dimensional displacement lifting device. By arranging multiple rollers to limit the lifting frame, the lifting frame can be prevented from lateral deviation during the lifting process, thereby improving the lifting stability of the three-dimensional displacement lifting device.

[0032] (2) By setting a limit frame and cooperating with the limit frame, the lifting frame can be prevented from overturning when the roller is damaged. By setting cleaning cotton, the surface of the slide rail can be kept clean.

[0033] (3) The frame is configured as a frame-like structure, and the rollers, limit frames, and cleaning cotton are arranged on the outside of the frame, so that the sliding mechanism can be easily maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 This is a three-dimensional diagram of a three-dimensional displacement lifting device of the utility model;

[0036] Figure 2 This is a three-dimensional diagram of a fixed frame in a three-dimensional displacement lifting device of the present invention;

[0037] Figure 3 for Figure 2 The stereogram at A in the middle;

[0038] Figure 4 This is a cross-sectional view of a slide rail in a three-dimensional displacement lifting device of the present invention;

[0039] Figure 5 This is a three-dimensional diagram of the driving mechanism of a three-dimensional displacement lifting device of the present invention;

[0040] Figure 6 This is an exploded view of the base of a three-dimensional displacement lifting device of the utility model.

[0041] Among them: 1. Base; 11. Mounting plate; 12. Moving plate; 13. Bottom plate; 14. Second motor; 15. Screw; 2. Fixed frame; 21. Frame; 22. Slide rail; 3. Lifting frame; 4. Driving mechanism; 41. First motor; 42. Gear; 43. Rack; 5. Sliding mechanism; 51. Roller; 52. Limit frame; 53. Cleaning cotton; 501. Receiving slot; 6. Limit switch. DETAILED DESCRIPTION

[0042] The following will be combined with the specific embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] like Figure 1-6As shown, a three-dimensional displacement lifting device of the present invention includes a base 1, a fixing frame 2, a lifting frame 3, a driving mechanism 4, a sliding mechanism 5 and a plurality of limit switches 6.

[0044] The base 1 is used to support the fixing frame 2 , and the fixing frame 2 is fixedly arranged on the base 1 .

[0045] The lifting frame 3 is used to carry the workpiece to be transported.

[0046] The driving mechanism 4 is used to drive the lifting frame 3 to move.

[0047] The sliding mechanism 5 is used to improve the lifting stability of the lifting frame 3. The sliding mechanism 5 includes rollers 51, which are rotatably arranged on the lifting frame 3 and are in contact with and rolling connection with the side walls of the fixed frame 2; that is, the rollers 51 will rise and fall as the lifting frame 3 rises and falls, so that the rollers 51 are always connected to the side walls of the fixed frame 2, and there is no need to add rollers 51 according to the telescopic stroke of the lifting frame 3, thereby reducing the investment cost and maintenance cost of the device; at least three rollers 51 are provided, which are used to limit the lifting frame 3 so that the lifting frame 3 slides on the fixed frame 2 in the vertical direction, preventing the lifting frame 3 from lateral deviation during the lifting process, thereby improving the lifting stability of the lifting frame 3. At the same time, the use of rollers 51 to stabilize the lifting frame 3 will greatly reduce the wear of the sliding mechanism 5 compared with other methods such as sliders, which is conducive to increasing the service life of the device.

[0048] like Figure 2 As shown, the fixed frame 2 includes a frame body 21 and a slide rail 22, the slide rail 22 is fixedly arranged on the frame body 21, a plurality of slide rails 22 are provided, and the plurality of slide rails 22 are symmetrically arranged about the center line of the frame body 21; Figure 3 and Figure 4 As shown, the roller 51 is in contact with the side wall of the slide rail 22 and is rollingly linked. The cross section of the slide rail 22 is rectangular. One of the side walls of the slide rail 22 is parallel to the side wall of the frame 21 close to the slide rail 22. The other three side walls of the slide rail 22 are all provided with rollers 51. Figure 2 As shown, since the slide rails 22 are relatively arranged on both sides of the frame 21, the multiple rollers 51 can respectively abut and roll against the four sides of the fixed frame 2, thereby ensuring the limiting effect of the rollers 51 on the lifting frame 3; specifically, as shown Figure 2 As shown, four slide rails 22 can be provided, and two groups of rollers 51 are provided on each slide rail 22 , with each group of rollers 51 having three rollers, which respectively abut against three side surfaces of the corresponding slide rail 22 .

[0049] The sliding mechanism 5 also includes a plurality of limit frames 52 and cleaning cottons 53. The limit frames 52 are fixedly arranged on the lifting frame 3 and correspond one to one with the number and position of the slide rails 22. The limit frames 52 are provided with a receiving groove 501, that is, the limit frames 52 form a U-shaped structure, and the side wall of the slide rail 22 connected to the roller 51 is at least partially located in the receiving groove 501. The side wall of the slide rail 22 connected to the roller 51 is either partially located in the receiving groove 501 or completely located in the receiving groove 501, that is, at least one side surface of the slide rail 22 is completely located in the receiving groove 501, and the other two side surfaces are partially located in the receiving groove 501. Therefore, when the roller 51 is damaged, the slide rail 22 can be supported against the limit frame 52 to prevent the lifting frame 3 from overturning.

[0050] In order to avoid friction loss between the slide rail 22 and the limiting frame 52 during normal operation of the device, it is preferred that a gap be set between the side wall of the slide rail 22 and the side wall of the receiving groove 501.

[0051] A cleaning cotton 53 is fixedly arranged in each receiving groove 501, and the side wall of the slide rail 22 connected to the roller 51 and the cleaning cotton 53 are in contact and slidably connected. Figure 3 As shown, when the lifting frame 3 is lifted and lowered, the cleaning cotton 53 can be driven to be lifted and lowered synchronously, so that the surface of the slide rail 22 can be cleaned by the cleaning cotton 53 sliding against the slide rail 22, thereby ensuring the lifting stability of the lifting frame 3.

[0052] In order to improve the cleaning effect of the cleaning cotton 53 on the slide rail 22, it is preferred to provide two cleaning cottons 53 on each slide rail 22, and the multiple rollers 51 connected to the same slide rail 22 are all located between the two cleaning cottons 53 connected to this slide rail 22, so that during the lifting process of the lifting frame 3, the cleaning cotton 53 is always in front of the roller 51 in the moving direction of the lifting frame 3.

[0053] like Figure 2 As shown, it is preferred that the frame 21 is a rectangular frame structure, and the lifting frame 3 is arranged inside the frame 21 to prevent the lifting frame 3 from overturning. The roller 51, the limit frame 52 and the cleaning cotton 53 are arranged outside the frame 21, so as to facilitate the maintenance of the sliding mechanism 5 outside the device.

[0054] Since the sliding mechanism 5 has a good limiting effect, the driving mechanism 4 does not need to be a mechanism with a guiding function, but can be a simple structure, such as Figure 5The driving mechanism 4 includes a first motor 41, a gear 42 and a rack 43, wherein the first motor 41 is fixedly arranged on the lifting frame 3; the gear 42 is fixedly arranged on the output shaft of the first motor 41 and is coaxially arranged therewith; the rack 43 is fixedly arranged on the fixed frame 2, and the gear 42 and the rack 43 are engaged. When the first motor 41 is started, the gear 42 can be driven to rotate, thereby utilizing the engagement of the gear 42 and the rack 43 and the sliding mechanism 5 to limit the lifting frame 3 to drive the lifting frame 3 to move up and down.

[0055] like Figure 6 As shown, the base 1 includes a mounting plate 11, a movable plate 12, a bottom plate 13, a second motor 14 and a screw rod 15, wherein the fixing frame 2 is fixedly arranged on the top side of the mounting plate 11, and the movable plate 12 is slidably arranged on the bottom side of the mounting plate 11; the bottom plate 13 is slidably arranged on the bottom side of the movable plate 12, and the sliding direction of the bottom plate 13 is perpendicular to the sliding direction of the movable plate 12; the second motor 14 is fixedly arranged on the movable plate 12 and the bottom plate 13 respectively; the screw rod 15 is rotatably arranged on the movable plate 12 and the bottom plate 13 respectively, and the screw rod 15 on the movable plate 12 is coaxially fixedly connected to the output shaft of the second motor 14 on the movable plate 12, and is fixedly connected to the mounting plate 11. The plate 11 is connected by threaded fitting, and the screw rod 15 on the base plate 13 is coaxially fixedly connected to the output shaft of the second motor 14 on the base plate 13, and is connected to the movable plate 12 by threaded fitting. Of course, the two screw rods 15 are also perpendicular to each other. When the second motor 14 on the base plate 13 is started, the screw rod 15 on the base plate 13 can be driven to rotate, thereby using the threaded fitting to drive the movable plate 12 to slide. Similarly, when the other second motor 14 is started, the mounting plate 11 can be driven to move, thereby achieving the effect of controlling the horizontal two-dimensional movement of the mounting plate 11, cooperating with the lifting of the lifting frame 3 to achieve three-dimensional movement of the lifting frame 3.

[0056] The limit switch 6 is used to limit the movement range of the lifting frame 3. Figure 1 、 Figure 2 and Figure 6 As shown, two limit switches 6 are relatively fixed on the fixed frame 2, the movable plate 12 and the bottom plate 13, and the lifting frame 3 selectively abuts the two limit switches 6 on the fixed frame 2, the mounting plate 11 selectively abuts the two limit switches 6 on the movable plate 12, and the movable plate 12 selectively abuts the two limit switches 6 on the bottom plate 13. The limit switches 6 can be electrically connected to the light bulbs. When the limit switches 6 are abutted, the circuit is turned on, so that the light bulbs connected thereto are illuminated, thereby improving the operator's timely response and avoiding the lifting frame 3 from moving too far and colliding with other components.

[0057] The method of using the three-dimensional displacement lifting device of the utility model is as follows:

[0058] First, the workpiece is mounted on the top side of the lifting frame 3, and then the first motor 41 and the second motor 14 are controlled respectively to drive the workpiece to move to the target location. During this period, the roller 51 is connected to the lifting frame 3 so that the roller 51 can move synchronously with the lifting frame 3, reducing the number of rollers 51 used. By using multiple rollers 51 to contact and roll with the fixed frame 2 in different directions, the lifting frame 3 can be lifted and lowered smoothly, thereby improving the movement accuracy of the three-dimensional displacement lifting device.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A three-dimensional displacement lifting device, characterized in that: It comprises a base (1), a fixing frame (2), a lifting frame (3), a driving mechanism (4) and a sliding mechanism (5), wherein: The fixing frame (2) is fixedly arranged on the base (1); The driving mechanism (4) is used to drive the lifting frame (3) to move; The sliding mechanism (5) includes a roller (51), which is rotatably arranged on the lifting frame (3) and abuts against and is rollingly connected to the side wall of the fixed frame (2); At least three rollers (51) are provided, and are used to limit the position of the lifting frame (3), so that the lifting frame (3) slides on the fixing frame (2) in a vertical direction.

2. A three-dimensional displacement lifting device according to claim 1, characterized in that: The fixing frame (2) comprises a frame body (21) and a slide rail (22), wherein: The slide rail (22) is fixedly arranged on the frame (21), and a plurality of the slide rails (22) are provided, and the plurality of slide rails (22) are symmetrically arranged about the center line of the frame (21), and the roller (51) is in contact with the side wall of the slide rail (22) and is rollingly linked; The cross section of the slide rail (22) is rectangular, one of the side walls of the slide rail (22) is parallel to the side wall of the frame (21) close to the slide rail (22), and rollers (51) are provided on the other three side walls of the slide rail (22).

3. A three-dimensional displacement lifting device according to claim 2, characterized in that: The sliding mechanism (5) further comprises a plurality of limiting frames (52), wherein the limiting frames (52) are fixedly arranged on the lifting frame (3) and correspond one to one with the number and position of the slide rails (22); The limiting frame (52) is provided with a receiving groove (501), and the side wall of the slide rail (22) connected to the roller (51) is at least partially located in the receiving groove (501).

4. A three-dimensional displacement lifting device according to claim 3, characterized in that: The side wall of the slide rail (22) is spaced apart from the side wall in the accommodating groove (501).

5. The three-dimensional displacement lifting device according to claim 4, characterized in that: The sliding mechanism (5) further comprises cleaning cotton (53), and the cleaning cotton (53) is fixedly arranged in each of the accommodating grooves (501), and the side wall of the slide rail (22) connected to the roller (51) and the cleaning cotton (53) are in contact with each other and are slidably connected.

6. The three-dimensional displacement lifting device according to claim 5, characterized in that: The frame (21) is a rectangular parallelepiped frame structure, the lifting frame (3) is arranged inside the frame (21), and the roller (51), the limiting frame (52) and the cleaning cotton (53) are arranged outside the frame (21).

7. The three-dimensional displacement lifting device according to claim 5, characterized in that: Two cleaning cottons (53) are provided on each slide rail (22), and the plurality of rollers (51) connected to the same slide rail (22) are all located between the two cleaning cottons (53) connected to the slide rail (22).

8. The three-dimensional displacement lifting device according to claim 1, characterized in that: The driving mechanism (4) includes a first motor (41), a gear (42) and a rack (43), wherein: The first motor (41) is fixedly arranged on the lifting frame (3); The gear (42) is fixedly mounted on the output shaft of the first motor (41) and is coaxially arranged therewith; The rack (43) is fixedly arranged on the fixing frame (2), and the gear (42) is meshed with the rack (43).

9. The three-dimensional displacement lifting device according to claim 1, characterized in that: The base (1) comprises a mounting plate (11), a movable plate (12), a bottom plate (13), a second motor (14) and a screw rod (15), wherein: The fixing frame (2) is fixedly arranged on the top side of the mounting plate (11), and the movable plate (12) is slidably arranged on the bottom side of the mounting plate (11); The bottom plate (13) is slidably arranged on the bottom side of the movable plate (12), and the sliding direction of the bottom plate (13) is perpendicular to the sliding direction of the movable plate (12); The second motor (14) is fixedly arranged on the movable plate (12) and the bottom plate (13) respectively; The screw rod (15) is rotatably arranged on the movable plate (12) and the base plate (13), and the screw rod (15) on the movable plate (12) is coaxially fixedly connected to the output shaft of the second motor (14) on the movable plate (12), and is connected to the mounting plate (11) through threaded matching. The screw rod (15) on the base plate (13) is coaxially fixedly connected to the output shaft of the second motor (14) on the base plate (13), and is connected to the movable plate (12) through threaded matching.

10. The three-dimensional displacement lifting device according to claim 9, characterized in that: The invention also includes a limit switch (6), wherein two limit switches (6) are relatively fixed on the fixed frame (2), the movable plate (12) and the bottom plate (13), and the lifting frame (3) selectively abuts the two limit switches (6) on the fixed frame (2), the mounting plate (11) selectively abuts the two limit switches (6) on the movable plate (12), and the movable plate (12) selectively abuts the two limit switches (6) on the bottom plate (13).

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