Movable lifting platform

Abstract

The utility model relates to the technical field of lifting platforms, and provides a movable lifting platform which comprises a lifting frame and a plurality of leveling trundles, and each leveling trundle comprises a mounting plate, a rotating seat, an idler wheel, a screw rod and a supporting block. The rotating seat is rotationally arranged on the mounting plate; the rolling wheel is rotationally arranged on the rotating seat and is used for being in rolling connection with the ground, and a rotating shaft of the rolling wheel is perpendicular to a rotating shaft of the rotating seat; the screw rod is rotationally arranged on the rotating seat; the supporting block is connected to the screw rod in a threaded fit mode and selectively moves to the position below the rolling wheels. According to the lifting platform, the screw rod and the supporting block are arranged on the rotating seat provided with the rolling wheels, a moving mechanism and a supporting and leveling mechanism of the lifting platform are combined into a whole, switching of the using states of the lifting platform can be achieved through rotation of the screw rod, the structure of the lifting platform is simplified, and the occupied space of the lifting platform is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting platforms, in particular to a mobile lifting platform. Background Art

[0002] A lifting platform is a kind of lifting and conveying equipment, which has been widely used in fields such as factories and warehousing logistics. In order to improve the mobility of the lifting platform and make the lifting platform adapt to different working conditions, a caster set is usually installed on the lifting platform.

[0003] The invention patent with the patent publication number CN117446692A discloses a process chamber auxiliary installation device, which includes a movable device frame. The device frame is provided with a lifting device, a leveling device and a positioning detection frame. The lifting end of the lifting device is connected with a process chamber lifting platform, and positioning sensors are respectively arranged at both ends of the positioning detection frame. A sensor mounting seat is connected to one side of the process chamber lifting platform, and displacement sensors are respectively mounted on both sides of the sensor mounting seat. The present invention is provided with a lifting device, a leveling device and a positioning detection frame, which perform positioning detection, lifting adjustment and horizontal adjustment on the double process chambers. A single person can complete the leveling and installation of the entire double process chambers, improving the installation accuracy, saving installation time and labor costs, and reducing the risk of personnel injury.

[0004] In the above technical solution, in order to switch between the moving and fixed states of the device, universal wheels and a leveling device are arranged on the bottom side of the device frame. When the leveling device abuts against the ground and the universal wheels are separated from the ground, the device is in a fixed state. When the leveling device is separated from the ground and the universal wheels abut against the ground, the device is in a moving state. However, the leveling device and the universal wheels are independent of each other, which will occupy a large space and is not conducive to the lightweight design of the lifting platform. Utility Model Content

[0005] In view of this, the utility model provides a mobile lifting platform, which uses leveling casters to move or support and fix the lifting frame, simplifies the structure of the lifting platform, and reduces the occupied space of the lifting platform.

[0006] The technical solution of the utility model is realized as follows: The utility model provides a mobile lifting platform, which includes a lifting frame and a plurality of leveling casters. The leveling caster includes a mounting plate, a rotating seat, a roller, a screw rod and a support block, wherein,

[0007] The mounting plate is fixedly arranged on the lifting frame;

[0008] The rotating seat is rotatably arranged on the mounting plate;

[0009] The roller is rotatably arranged on the rotating seat and is used for rolling connection with the ground, and the rotating axis of the roller is perpendicular to the rotating axis of the rotating seat;

[0010] The screw rod is rotatably arranged on the rotating seat;

[0011] The support block is connected to the screw rod through thread fit and is selectively moved below the roller.

[0012] On the basis of the above technical solutions, preferably, a receiving groove is formed on the circumferential side of the support block, a part of the roller is arranged in the receiving groove, and the inner wall of the receiving groove selectively abuts against the roller.

[0013] More preferably, the leveling caster further includes a limiting strip. A limiting groove is formed on the circumferential side of the support block. The limiting strip is fixedly arranged on the rotating seat and is movably arranged in the limiting groove. When the inner wall of the receiving groove abuts against the roller, the inner wall of the limiting groove abuts against the limiting strip.

[0014] More preferably, one end of the screw rod away from the support block is spherical;

[0015] The leveling caster further includes a supporting block. The supporting block is fixedly arranged on the rotating seat. A spherical groove is formed on the supporting block, and one end of the screw rod away from the support block is rotatably arranged in the spherical groove.

[0016] More preferably, the screw rod is arranged in the vertical direction.

[0017] More preferably, the leveling caster further includes a turntable. The turntable is fixedly arranged on the screw rod, and the turntable is in the shape of a gear.

[0018] On the basis of the above technical solutions, preferably, the lifting frame includes a frame, a lifting platform, a first motor and a first lead screw, wherein,

[0019] The mounting plate is fixedly arranged on the frame;

[0020] The lifting platform is slidably arranged on the frame;

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

[0022] The first lead screw is rotatably arranged on the frame and is coaxially and fixedly connected to the output end of the first motor. The first lead screw is connected to the lifting platform through thread fit.

[0023] More preferably, the lifting frame further includes a translation platform, a second motor and a second lead screw, wherein,

[0024] The translation stage is slidably arranged on the lifting stage;

[0025] The second motor is fixedly arranged on the lifting stage;

[0026] The second lead screw is rotatably arranged on the lifting stage and is coaxially and fixedly connected to the output end of the second motor. The second lead screw is in threaded fit connection with the translation stage, and the second lead screw is arranged in the horizontal direction while the first lead screw is arranged in the vertical direction.

[0027] More preferably, the frame includes a bottom frame and two support frames, wherein,

[0028] The mounting plate is fixedly arranged on the bottom side of the bottom frame;

[0029] The support frames are fixedly arranged on the top side of the bottom frame. The two support frames are opposite and spaced apart. The lifting stage is slidably arranged between the two support frames. There are two first motors and two first lead screws, which are respectively arranged on the two support frames.

[0030] More preferably, the lifting frame further includes a plurality of slide rails and a plurality of sliders, wherein,

[0031] The slide rails are respectively fixedly arranged on the support frames and the lifting stage;

[0032] The sliders are respectively fixedly arranged on the lifting stage and the translation stage. The sliders on the lifting stage are slidably connected to the slide rails on the support frames, and the sliders on the translation stage are slidably connected to the slide rails on the lifting stage.

[0033] A mobile lifting platform of the present utility model has the following beneficial effects compared with the prior art:

[0034] (1) By arranging a screw rod and a support block on a rotating seat equipped with rollers, the moving mechanism and the support leveling mechanism of the lifting platform are combined into one. By rotating the screw rod, the switching of the use state of the lifting platform can be realized, which not only simplifies the structure of the lifting platform but also reduces the occupied space of the lifting platform;

[0035] (2) By arranging a receiving groove, with the cooperation of the rollers and the receiving groove, it is not only possible to prevent the rollers from rotating when the support block supports the lifting frame but also to cooperate with the turntable to improve the adjustment convenience of the support block, thus facilitating the use of the lifting platform;

[0036] (3) By setting the limit bars and limit grooves, it is possible to prevent the accommodation groove from excessively holding the roller and causing damage. By setting the abutting block and opening a spherical groove on its bottom side, uniform pressure can be provided for the screw rod to prevent the screw rod from deflecting, thereby improving the protection performance of this lifting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0038] Figure 1 is a perspective view of a mobile lifting platform of the present invention;

[0039] Figure 2 is a perspective view of the leveling caster in a mobile lifting platform of the present invention;

[0040] Figure 3 is a cross-sectional view of the leveling caster in a mobile lifting platform of the present invention;

[0041] Figure 4 is a bottom view of the leveling caster in a mobile lifting platform of the present invention;

[0042] Figure 5 is as shown in Figure 3 is an enlarged view of part A in

[0043] Figure 6 is a front view of a mobile lifting platform of the present invention;

[0044] Figure 7 is a partial perspective view of a mobile lifting platform of the present invention.

[0045] Wherein: 1, lifting frame; 11, frame; 111, bottom frame; 112, support frame; 12, lifting table; 13, first motor; 14, first lead screw; 15, translation table; 16, second motor; 17, second lead screw; 18, slide rail; 19, slider; 2, leveling caster; 21, mounting plate; 22, rotating seat; 23, roller; 24, screw rod; 25, support block; 26, limit bar; 27, abutting block; 28, turntable; 201, accommodation groove; 202, limit groove; 203, spherical groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] The technical solutions in the present utility model will be clearly and completely described below in conjunction with the specific 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 of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0047] As Figures 1-7 shown, a mobile lifting platform of the present utility model includes a lifting frame 1 and a plurality of leveling casters 2.

[0048] The lifting frame 1 is used to convey workpieces or objects to be conveyed, mainly for conveying in the lifting direction.

[0049] The leveling caster 2 is a moving mechanism and a supporting and leveling mechanism for the lifting frame 1, and is used to switch the use state of the lifting frame 1. The leveling caster 2 includes a mounting plate 21, a rotating seat 22, a roller 23, a screw 24 and a support block 25. Among them, the mounting plate 21 is fixedly arranged on the lifting frame 1; the rotating seat 22 is rotatably arranged on the mounting plate 21; the roller 23 is rotatably arranged on the rotating seat 22 and is used for rolling connection with the ground, and the rotation axis of the roller 23 is perpendicular to the rotation axis of the rotating seat 22; as Figure 2 shown, the mounting plate 21, the rotating seat 22 and the roller 23 are combined to form a moving mechanism of the lifting frame 1, which is equivalent to a universal wheel and is used to move the lifting frame 1; the screw 24 is rotatably arranged on the rotating seat 22; the support block 25 is connected to the screw 24 through a threaded fit and selectively moves to the lower side of the roller 23; as Figure 3 shown, when the screw 24 is fixed and the support block 25 rotates relative to the screw 24, the height of the support block 25 can be adjusted. When the bottom side of the support block 25 is located below the bottom side of the roller 23, the support block 25 supports the lifting frame 1, and by adjusting the rotation of a plurality of support blocks 25, the lifting frame 1 can be adjusted to the required angle. When the bottom side of the support block 25 is located above the bottom side of the roller 23 by rotating the support block 25, the roller 23 supports the lifting frame 1, so that the roller 23 drives the lifting frame 1 to move by rolling on the ground; by arranging the screw 24 on the rotating seat 22, the moving mechanism and the supporting and leveling mechanism of the lifting frame 1 are integrated, simplifying the bottom structure of the lifting platform and reducing the occupied space of the present lifting platform.

[0050] As Figure 4As shown in the figure, a receiving groove 201 is formed on the circumferential side of the support block 25. A part of the roller 23 is arranged in the receiving groove 201, and the inner wall of the receiving groove 201 selectively abuts against the roller 23. When the screw 24 is rotated, by using the abutment between the roller 23 and the receiving groove 201, the support block 25 can be prevented from rotating along with the screw 24, thus facilitating the adjustment of the height of the support block 25. At the same time, when the screw 24 is rotated to make the inner wall of the receiving groove 201 abut against the roller 23, it can also prevent the roller 23 from continuing to rotate, that is, the universal wheel realizes the braking effect. Due to the braking function of the roller 23, under certain working conditions, it is not necessary to use the support block 25 to abut against the ground, but only to use the receiving groove 201 to abut against the roller 23 to realize the switching of the fixed state of the lifting frame 1.

[0051] The leveling caster 2 further includes a limiting strip 26, a abutting block 27 and a turntable 28. As Figure 4 shown in the figure, a limiting groove 202 is formed on the circumferential side of the support block 25. The limiting strip 26 is fixedly arranged on the rotating seat 22 and is movably arranged in the limiting groove 202. When the inner wall of the receiving groove 201 abuts against the roller 23, the inner wall of the limiting groove 202 abuts against the limiting strip 26, so as to prevent the roller 23 from being damaged due to the excessive abutting force of the inner wall of the receiving groove 201 on the roller 23.

[0052] As Figure 5 shown in the figure, the end of the screw 24 far from the support block 25 is spherical; the abutting block 27 is fixedly arranged on the rotating seat 22. A spherical groove 203 is formed on the abutting block 27, and the end of the screw 24 far from the support block 25 is rotatably arranged in the spherical groove 203. The abutting block 27 is in abutting contact with the top end of the screw 24, so as to prevent the screw 24 from axially displacing on the rotating seat 22 when the support block 25 abuts against the ground. By setting the connection surface between the two to be spherical, uniform pressure can be provided for the top end of the screw 24 to prevent radial deviation or bending problems. In order to improve the adjustment efficiency of the support block 25, it is preferably to set the screw 24 in the vertical direction.

[0053] The turntable 28 is used to drive the screw 24 to rotate. The turntable 28 is fixedly arranged on the screw 24, and the turntable 28 is in the shape of a gear. As Figure 2 shown in the figure, the turntable 28 has a larger specification and a non-smooth circumferential side. Compared with the relatively smaller screw 24, it is easier to perform the rotation operation, thus improving the convenience of rotating the screw 24.

[0054] As Figure 7As shown in the figure, the lifting frame 1 includes a frame 11, a lifting platform 12, a first motor 13, a first lead screw 14, a translation platform 15, a second motor 16, a second lead screw 17, a plurality of slide rails 18 and a plurality of sliders 19. Among them, the mounting plate 21 is fixedly arranged on the frame 11; the lifting platform 12 is slidably arranged on the frame 11; the first motor 13 is fixedly arranged on the frame 11; the first lead screw 14 is rotatably arranged on the frame 11 and is coaxially and fixedly connected to the output end of the first motor 13. The first lead screw 14 is in threaded engagement with the lifting platform 12. When the first motor 13 is started, the first lead screw 14 can be driven to rotate synchronously, and thus, by using the threaded engagement between the first lead screw 14 and the lifting platform 12, the lifting platform 12 can be driven to slide on the frame 11.

[0055] The translation platform 15 is slidably arranged on the lifting platform 12; the second motor 16 is fixedly arranged on the lifting platform 12; the second lead screw 17 is rotatably arranged on the lifting platform 12 and is coaxially and fixedly connected to the output end of the second motor 16. The second lead screw 17 is in threaded engagement with the translation platform 15. Similarly, when the second motor 16 is started, the second lead screw 17 can be driven to rotate synchronously, and thus, by using the threaded engagement between the second lead screw 17 and the translation platform 15, the translation platform 15 can be driven to slide on the lifting platform 12. The second lead screw 17 is arranged in the horizontal direction, and the first lead screw 14 is arranged in the vertical direction. Therefore, the lifting platform 12 can slide repeatedly in the vertical direction, and the translation platform 15 can slide in the horizontal direction, thereby improving the moving range and adaptation range of this lifting platform.

[0056] As Figure 6 shown in the figure, the frame 11 includes a base frame 111 and two support frames 112. Among them, the mounting plate 21 is fixedly arranged on the bottom side of the base frame 111; the support frames 112 are fixedly arranged on the top side of the base frame 111. The two support frames 112 are opposite and spaced apart. The lifting platform 12 is slidably arranged between the two support frames 112. There are two first motors 13 and two first lead screws 14, which are respectively arranged on the two support frames 112, so that the conveyed object can be moved between the two support frames 112, preventing it from moving out of the protection range of the support frames 112 and colliding with other objects.

[0057] As Figure 7 shown in the figure, the slide rails 18 are respectively fixedly arranged on the support frames 112 and the lifting platform 12; the sliders 19 are respectively fixedly arranged on the lifting platform 12 and the translation platform 15. The sliders 19 on the lifting platform 12 are slidably connected to the slide rails 18 on the support frames 112, and the sliders 19 on the translation platform 15 are slidably connected to the slide rails 18 on the lifting platform 12, thereby improving the moving stability of the lifting platform 12 and the translation platform 15, preventing the workpiece from deflecting during transportation. The arrangement of the slide rails 18 and the sliders 19 is more suitable for the driving mode using two first motors 13 in this application.

[0058] The usage method of a mobile lifting platform of the present utility model is as follows:

[0059] Firstly, use the rollers 23 to move the lifting platform to the usage position. Then, adjust the height of the support blocks 25 by rotating the turntable 28. Use multiple support blocks 25 to support the lifting frame 1, and adjust the levelness of the lifting frame 1 by rotating the turntable 28. Finally, install the workpiece fixing fixture on the translation table 15, and drive the workpiece to move by driving the first motor 13 and the second motor 16.

[0060] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A mobile lifting platform, characterized in that: It includes a lifting frame (1) and a plurality of leveling casters (2). The leveling caster (2) includes a mounting plate (21), a rotating seat (22), a roller (23), a screw rod (24) and a support block (25). Among them, The mounting plate (21) is fixedly arranged on the lifting frame (1); The rotating seat (22) is rotatably arranged on the mounting plate (21); The roller (23) is rotatably arranged on the rotating seat (22) for rolling connection with the ground, and the rotation axis of the roller (23) is perpendicular to the rotation axis of the rotating seat (22); The screw rod (24) is rotatably arranged on the rotating seat (22); The support block (25) is connected to the screw rod (24) by thread fit and selectively moves below the roller (23).

2. The mobile lifting platform according to claim 1, wherein: A receiving groove (201) is formed on the circumferential side of the support block (25). A part of the roller (23) is arranged in the receiving groove (201), and the inner wall of the receiving groove (201) selectively abuts against the roller (23).

3. A mobile lifting platform according to claim 2, characterized in that: The leveling caster (2) further includes a limiting strip (26). A limiting groove (202) is formed on the circumferential side of the support block (25). The limiting strip (26) is fixedly arranged on the rotating seat (22) and movably arranged in the limiting groove (202). When the inner wall of the receiving groove (201) abuts against the roller (23), the inner wall of the limiting groove (202) abuts against the limiting strip (26).

4. A mobile lifting platform according to claim 3, characterized in that: One end of the screw rod (24) away from the support block (25) is spherical; The leveling caster (2) further includes a supporting block (27). The supporting block (27) is fixedly arranged on the rotating seat (22). A spherical groove (203) is formed on the supporting block (27), and one end of the screw rod (24) away from the support block (25) is rotatably arranged in the spherical groove (203).

5. The mobile lifting platform according to claim 4, characterized in that: The screw rod (24) is arranged in the vertical direction.

6. The mobile lifting platform according to claim 5, wherein: The leveling caster (2) further includes a turntable (28). The turntable (28) is fixedly arranged on the screw rod (24), and the turntable (28) is in the shape of a gear.

7. A mobile lifting platform according to claim 1, characterized in that: The lifting frame (1) includes a frame (11), a lifting platform (12), a first motor (13) and a first lead screw (14). Among them, The mounting plate (21) is fixedly arranged on the frame (11); The lifting platform (12) is slidably arranged on the frame (11); The first motor (13) is fixedly arranged on the frame (11); The first lead screw (14) is rotatably arranged on the frame (11) and is coaxially and fixedly connected to the output end of the first motor (13). The first lead screw (14) is connected to the lifting platform (12) by thread fit.

8. A mobile lifting platform according to claim 7, characterized in that: The lifting frame (1) further includes a translation platform (15), a second motor (16) and a second lead screw (17). Among them, The translation platform (15) is slidably arranged on the lifting platform (12); The second motor (16) is fixedly arranged on the lifting platform (12); The second lead screw (17) is rotatably arranged on the lifting table (12) and is coaxially and fixedly connected to the output end of the second motor (16). The second lead screw (17) is in threaded fit connection with the translation table (15), and the second lead screw (17) is arranged in the horizontal direction, while the first lead screw (14) is arranged in the vertical direction.

9. A mobile lifting platform according to claim 8, characterized in that: The frame (11) includes a base frame (111) and two support frames (112), wherein, The mounting plate (21) is fixedly arranged on the bottom side of the base frame (111); The support frames (112) are fixedly arranged on the top side of the base frame (111). The two support frames (112) are opposite and spaced apart. The lifting table (12) is slidably arranged between the two support frames (112). There are two first motors (13) and two first lead screws (14), which are respectively arranged on the two support frames (112).

10. A mobile lifting platform according to claim 9, characterized in that: The lifting frame (1) further includes a plurality of slide rails (18) and a plurality of sliders (19), wherein, The slide rails (18) are respectively fixedly arranged on the support frames (112) and the lifting table (12); The sliders (19) are respectively fixedly arranged on the lifting table (12) and the translation table (15). The sliders (19) on the lifting table (12) are slidably connected to the slide rails (18) on the support frames (112), and the sliders (19) on the translation table (15) are slidably connected to the slide rails (18) on the lifting table (12).

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