Rotary lifting mechanism

Abstract

The utility model discloses a rotary lifting mechanism, and relates to the technical field of mechanical transmission. The rotary lifting mechanism comprises a first sleeve, a rotary rack is arranged on the peripheral side of the top of the first sleeve, a second sleeve is arranged in the first sleeve in a sleeved mode, a gear assembly is fixedly connected to a top plate of the second sleeve, and the top of each displacement lead screw is connected to the gear assembly and connected with a lead screw of the first sleeve in a threaded fit mode. The rotary driving assembly comprises a rotary driving part and a rotary gear in meshed connection with the rotary rack, the rotary driving part is arranged to drive the rotary gear to rotate so as to drive the first sleeve to rotate, and the lifting driving part is arranged to drive the gear assembly to rotate so as to drive the displacement lead screw to rotate; and the second sleeve moves in the direction close to or away from the first sleeve in the extending direction of the displacement lead screw. According to the rotary lifting mechanism, lifting operation at a certain height and 360-degree rotary operation can be achieved under the limited space condition, and the structure is stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical drive technical field, concretely relates to a rotary lifting mechanism. BACKGROUND

[0002] In the field of intelligent equipment, it is often necessary to perform a composite motion of rotation and lifting to meet different process requirements. For example, in an automated production line, devices such as robotic arms and lifting platforms need to precisely control the rotation angle and lifting height to achieve tasks such as material handling, assembly, and processing.

[0003] In the prior art, the adjustment of the space height and angle position of the existing intelligent device is mainly achieved by relying on a universal ball head holder under the device, which has a limited adjustment range and cannot meet the requirements of height and angle adjustment in a larger range. To achieve a larger range of height and angle adjustment, the prior art usually uses synchronous belts or transmission chains to rotate or lift. However, the space occupied by the synchronous chain transmission and synchronous belt transmission scheme is large, and the cost is high, which requires regular maintenance in the later stage and is not suitable for scenes with small space size and mass production. SUMMARY

[0004] One object of the present utility model is to provide a rotary lifting mechanism that solves the technical problem of large size and low running stability of the rotary lifting mechanism based on the transmission chain or synchronous belt in the prior art.

[0005] Another object of the present utility model is to further improve the running stability of the rotary lifting mechanism.

[0006] According to the purpose of the present utility model, the present utility model provides a rotary lifting mechanism, comprising:

[0007] A first sleeve extends in the vertical direction, and a rotary rack is provided on the top outer periphery side of the first sleeve;

[0008] A second sleeve is sleeved in the first sleeve, and the second sleeve includes a top plate and a carrying plate for carrying an intelligent product, which are arranged at intervals, and at least one gear assembly is fixedly connected to the top plate;

[0009] At least two displacement lead screws are provided corresponding to each gear assembly and extend in the vertical direction, and each displacement lead screw is arranged such that its top is connected to the gear assembly and is threadedly connected with the first sleeve;

[0010] A rotary drive assembly includes a rotary drive member and a rotary gear meshed with the rotary rack, and the rotary drive member is arranged to drive the rotary gear to rotate and drive the first sleeve to rotate;

[0011] At least one lifting driving member corresponding to each of the displacement screw rods, the lifting driving member is arranged to drive the gear assembly to rotate to drive the displacement screw rod to rotate, so that the second sleeve moves along the extension direction of the displacement screw rod towards the direction of approaching or moving away from the first sleeve.

[0012] Optionally, each of the gear assemblies comprises:

[0013] A first gear connected with the output shaft of the corresponding lifting driving member;

[0014] A second gear engaged with the first gear, and the second gear is arranged to be connected with the screw rod shaft of the displacement screw rod.

[0015] Optionally, the diameter of the first gear is greater than the diameter of the second gear.

[0016] Optionally, the first sleeve comprises:

[0017] A vertical part;

[0018] A horizontal part arranged to protrude from the inner wall of the vertical part towards the center line, and the side surface of the horizontal part is provided with the screw rod thread matched with the displacement screw rod.

[0019] Optionally, the top plate comprises:

[0020] At least one first limiting hole, each of the first limiting holes is arranged to correspond to the first gear;

[0021] At least one second limiting hole, each of the second limiting holes is arranged to correspond to the second gear.

[0022] Optionally, the lifting rotating mechanism further comprises:

[0023] A first fixing member located above the first sleeve and connected with the rotating driving member, the first fixing member comprises a limiting protrusion protruding downward from the bottom thereof and having a stepped structure on the outer circumferential side;

[0024] A second fixing member extending in the horizontal direction, the second fixing member is connected to the bottom of the limiting protrusion, and the second fixing member and the stepped structure of the limiting protrusion form a limiting groove for limiting the first sleeve.

[0025] Optionally, the number of displacement screw rods is two.

[0026] Optionally, the lifting driving member is a servo motor.

[0027] The utility model discloses a rotation driving part is set to through the rotation gear and the rotation rack of first sleeve meshing, and first sleeve is connected with the gear assembly of fixed connection in second sleeve through displacement screw rod, to drive first sleeve and second sleeve rotation in rotation driving part drive rotation gear rotation, drive corresponding displacement screw rod rotation when lifting driving part drive gear assembly rotation, to drive displacement screw rod and first sleeve relative displacement occurs to drive second sleeve move to the direction of close or away from first sleeve, that is, through displacement screw rod cooperation thread and the gear cooperation rack drive mode, not only can realize certain height's lifting and 360 DEG rotation in limited space, can also improve rotation lifting mechanism's transmission stability.

[0028] Further, the utility model discloses a first sleeve is limited in the limiting recess, to prevent the first sleeve rotation process and rotation gear from falling off when rotation driving part drive rotation gear drive first sleeve rotates around the axis of first sleeve, further guarantee the operation stability of rotation lifting mechanism.

[0029] The above description is only the summary of the technical scheme of the utility model, in order to can more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the following with the preferred embodiment of the utility model and cooperate with the drawing detailed description as follows. BRIEF DESCRIPTION OF DRAWINGS

[0030] Some specific embodiments of the utility model will be described in detail hereinafter with reference to the drawings in an exemplary but not restrictive manner. The same reference signs in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0031] Figure 1 It is the schematic structural drawing of rotation lifting mechanism according to one embodiment of the utility model in the descending state;

[0032] Figure 2 It is the schematic structural drawing of rotation lifting mechanism according to one embodiment of the utility model in the ascending state;

[0033] Figure 3 It is the schematic sectional view of rotation lifting mechanism according to one embodiment of the utility model.

[0034] Reference Signs:

[0035] 100-rotary lifting mechanism, 200-smart product, 10-first sleeve, 11-rotary rack, 12-screw thread, 13-vertical part, 14-horizontal part, 20-second sleeve, 21-top plate, 211-first limiting hole, 212-second limiting hole, 22-bearing plate, 30-gear assembly, 31-first gear, 32-second gear, 40-displacement screw, 50-rotary driving assembly, 51-rotary driving piece, 52-rotary gear, 60-lifting driving piece, 70-first fixing piece, 71-limiting protrusion, 80-second fixing piece, 81-limiting groove. DETAILED DESCRIPTION

[0036] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0037] To make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below in conjunction with the drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that only the parts related to the present application are shown in the drawings, not all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0038] The terms "comprising" and "having" and any variations thereof in the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0039] In this paper, the "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0040] Figure 1 is a schematic structural diagram of a rotary lifting mechanism according to an embodiment of the present application in a descending state, Figure 2 is a schematic structural diagram of a rotary lifting mechanism according to an embodiment of the present application in a rising state, Figure 3is a schematic sectional view of a rotary lifting mechanism according to an embodiment of the utility model.

[0041] As Figure 1 The utility model provides a rotary lifting mechanism 100, the rotary lifting mechanism 100 includes first sleeve 10, second sleeve 20, with every gear assembly 30 correspondingly arranged at least two displacement screw rod 40, rotary drive assembly 50 and with every displacement screw rod 40 correspondingly arranged at least one lifting drive piece 60, first sleeve 10 extends along vertical direction and its top outer circumferential side is equipped with rotary rack 11, second sleeve 20 is sleeved in first sleeve 10, second sleeve 20 includes interval arrangement top plate 21 and is used to carry the carrying plate 22 of intelligent product 200, top plate 21 is fixedly connected with at least one gear assembly 30, displacement screw rod 40 extends along vertical direction, every displacement screw rod 40 is arranged to be connected in the top at gear assembly 30 and is connected with the screw thread 12 of first sleeve 10, rotary drive assembly 50 includes rotary drive piece 51 and is engagedly connected with rotary rack 11 rotary gear 52, rotary drive piece 51 is arranged to drive rotary gear 52 rotates to drive first sleeve 10 rotates, lifting drive piece 60 is arranged to drive gear assembly 30 rotates to drive displacement screw rod 40 rotates, so that second sleeve 20 moves along the extension direction of displacement screw rod 40 towards the direction close to or away from first sleeve 10. Here, the number of gear assembly can be two, three, four or more, a plurality of gear assemblies 30 are evenly arranged about the circumference of second sleeve 20, and the bottom of displacement screw rod 40 is fixedly installed on the bottom plate of second sleeve 20.

[0042] In the embodiment, the rotary drive piece 51 is arranged to be engaged with the rotary rack 11 of the first sleeve 10 through the rotary gear 52, and the first sleeve 10 is connected with the gear assembly 30 fixedly connected to the second sleeve 20 through the displacement screw rod 40, so that the first sleeve 10 and the second sleeve 20 are driven to rotate when the rotary drive piece 51 drives the rotary gear 52 to rotate, and the corresponding displacement screw rod 40 is driven to rotate when the lifting drive piece 60 drives the gear assembly 30 to rotate, so as to drive the displacement screw rod 40 to relatively displace with the first sleeve 10, thereby driving the second sleeve 20 to move towards the direction close to or away from the first sleeve 10. That is, through the transmission mode of the displacement screw rod 40 cooperating with the screw thread and the gear cooperating with the rack, not only the lifting and 360° rotation of a certain height in a limited space can be realized, but also the transmission stability of the rotary lifting mechanism 100 can be improved.

[0043] As Figure 1As shown, in a further embodiment, each gear assembly 30 comprises a first gear 31 connected with the output shaft of the corresponding lifting drive 60 and a second gear 32 engaged with the first gear 31 and arranged to be connected with the screw shaft of the displacement screw rod 40. In this embodiment, by arranging the first gear 31 and the second gear 32 of each gear assembly 30 to be connected with the corresponding lifting drive 60 and the displacement screw rod 40 respectively, the lifting drive 60 drives the first gear 31 to rotate to drive the second gear 32 to rotate, and in turn drives the displacement screw rod 40 to rotate. Since the first sleeve 10 is connected with the displacement screw rod 40 through the screw thread 12, the controlled rotation of the displacement screw rod 40 causes the relative displacement of the first sleeve 10 to drive the second sleeve 20 to move towards or away from the first sleeve 10, thereby achieving the automatic lifting of the intelligent product 200, which is stable in structure and low in manufacturing cost.

[0044] As shown in FIG. 1, in a further embodiment, the first gear 31 is arranged to be connected with the output shaft of the lifting drive 60, and the second gear 32 is arranged to be connected with the screw shaft of the displacement screw rod 40. In this embodiment, by arranging the first gear 31 and the second gear 32 of each gear assembly 30 to be connected with the corresponding lifting drive 60 and the displacement screw rod 40 respectively, the lifting drive 60 drives the first gear 31 to rotate to drive the second gear 32 to rotate, and in turn drives the displacement screw rod 40 to rotate. Since the first sleeve 10 is connected with the displacement screw rod 40 through the screw thread 12, the controlled rotation of the displacement screw rod 40 causes the relative displacement of the first sleeve 10 to drive the second sleeve 20 to move towards or away from the first sleeve 10, thereby achieving the automatic lifting of the intelligent product 200, which is stable in structure and low in manufacturing cost. Figure 2 As shown in FIG. 1, in a further embodiment, the first gear 31 is arranged to be connected with the output shaft of the lifting drive 60, and the second gear 32 is arranged to be connected with the screw shaft of the displacement screw rod 40. In this embodiment, by arranging the first gear 31 and the second gear 32 of each gear assembly 30 to be connected with the corresponding lifting drive 60 and the displacement screw rod 40 respectively, the lifting drive 60 drives the first gear 31 to rotate to drive the second gear 32 to rotate, and in turn drives the displacement screw rod 40 to rotate. Since the first sleeve 10 is connected with the displacement screw rod 40 through the screw thread 12, the controlled rotation of the displacement screw rod 40 causes the relative displacement of the first sleeve 10 to drive the second sleeve 20 to move towards or away from the first sleeve 10, thereby achieving the automatic lifting of the intelligent product 200, which is stable in structure and low in manufacturing cost.

[0045] As shown in FIG. 1, in a further embodiment, the first sleeve 10 comprises a vertical portion 13 and a horizontal portion 14, the horizontal portion 14 is arranged to protrude from the inner wall of the vertical portion 13 towards the center line, and the side surface of the horizontal portion 14 is provided with a screw thread 12 for cooperating with the displacement screw rod 40. In this embodiment, by arranging the screw thread 12 for cooperating with the displacement screw rod 40 on the side surface of the horizontal portion 14 of the first sleeve 10, the displacement screw rod 40 is directly matched with the inside of the first sleeve 10, providing a larger contact area and reducing the shaking and deviation of the displacement screw rod 40 during rotation. Moreover, by arranging the horizontal portion 14 to protrude from the inner wall of the vertical portion 13 towards the center line, the overall external size of the rotary lifting mechanism 100 is not increased, the structural volume is minimized while ensuring the function, and the operating space range of the rotary lifting mechanism 100 in the limited space is further improved.

[0046] As shown in FIG. 1, in a further embodiment, the first gear 31 is arranged to be connected with the output shaft of the lifting drive 60, and the second gear 32 is arranged to be connected with the screw shaft of the displacement screw rod 40. In this embodiment, by arranging the first gear 31 and the second gear 32 of each gear assembly 30 to be connected with the corresponding lifting drive 60 and the displacement screw rod 40 respectively, the lifting drive 60 drives the first gear 31 to rotate to drive the second gear 32 to rotate, and in turn drives the displacement screw rod 40 to rotate. Since the first sleeve 10 is connected with the displacement screw rod 40 through the screw thread 12, the controlled rotation of the displacement screw rod 40 causes the relative displacement of the first sleeve 10 to drive the second sleeve 20 to move towards or away from the first sleeve 10, thereby achieving the automatic lifting of the intelligent product 200, which is stable in structure and low in manufacturing cost. Figure 1As shown, in a further embodiment, the top plate 21 comprises at least one first limiting hole 211 and at least one second limiting hole 212, each first limiting hole 211 is arranged corresponding to the first gear 31, and each second limiting hole 212 is arranged corresponding to the second gear 32. In this embodiment, by arranging the first limiting hole 211 corresponding to the first gear 31 and the second limiting hole 212 corresponding to the second gear 32 on the top plate 21, the first gear 31 and the second gear 32 are respectively pressed in the first limiting hole 211 and the second limiting hole 212, so as to further limit the first gear 31 and the second gear 32, improve the running stability of the gear assembly 30, prevent the gear assembly 30 from falling off during operation, and further improve the structural stability of the rotary lifting mechanism 100.

[0047] As shown in the drawings, Figure 3 In a further embodiment, the rotary lifting mechanism further comprises a first fixing member 70 and a second fixing member 80, the first fixing member 70 is located above the first sleeve 10 and connected with the rotary driving member 51, the first fixing member 70 comprises a limiting protrusion 71 protruding downward from the bottom thereof and having a stepped structure on the outer periphery, the second fixing member 80 extends in the horizontal direction, the second fixing member 80 is connected to the bottom of the limiting protrusion 71, and the second fixing member 80 and the stepped structure of the limiting protrusion 71 form a limiting groove 81 for limiting the first sleeve 10. In this embodiment, by limiting the first sleeve 10 in the limiting groove 81, when the rotary driving member 51 drives the rotary gear 52 to rotate the first sleeve 10 around the axis of the first sleeve 10, the rotation speed is prevented from being too fast to cause the first sleeve 10 to fall off from the rotary gear 52 during rotation, further ensuring the running stability of the rotary lifting mechanism 100.

[0048] In a further embodiment, the number of displacement screw rods 40 is two. By setting the number of displacement screw rods 40 to two and symmetrically arranging the two displacement screw rods 40 about the second sleeve 20, the lifting force is evenly distributed on both sides of the second sleeve 20, avoiding the bias, inclination or shaking caused by single displacement screw rod 40 driving, improving the overall balance and running stability of the rotary lifting mechanism 100, preventing the second sleeve 20 from tilting or jamming due to unilateral stress, and improving the reliability of the rotary lifting mechanism 100. Moreover, the two displacement screw rods 40 simultaneously participate in bearing and driving, sharing the load, so that the rotary lifting mechanism 100 can bear greater weight.

[0049] In a further embodiment, the lifting drive 60 is a servo motor, which can realize precise position, speed and torque control, ensuring high precision of the rotation and lifting movement, so that the rotary lifting mechanism 100 has better repeatability and consistency. At the same time, the servo motor has faster response speed and acceleration capacity, can adapt to the high-speed and high-frequency start-stop demand, and improves the operation efficiency of the rotary lifting mechanism 100.

[0050] The technical features of the above-mentioned embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0051] The above-mentioned embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A rotary lifting mechanism, characterized in that, include: The first sleeve extends vertically, and a rotating rack is provided on the outer periphery of the top of the first sleeve; The second sleeve is fitted inside the first sleeve. The second sleeve includes a top plate spaced apart and a support plate for supporting smart products. The top plate is fixedly connected to at least one gear assembly. At least two displacement screws are provided corresponding to each gear assembly, extending in the vertical direction. Each displacement screw is configured such that its top is connected to the gear assembly and is threadedly connected to the screw of the first sleeve. A rotary drive assembly includes a rotary drive member and a rotary gear meshing with the rotary rack, wherein the rotary drive member is configured to drive the rotary gear to rotate in order to rotate the first sleeve. At least one lifting drive is provided corresponding to each of the displacement screws. The lifting drive is configured to drive the gear assembly to rotate so as to rotate the displacement screw, thereby causing the second sleeve to move in a direction closer to or further away from the first sleeve along the extension direction of the displacement screw.

2. The rotary lifting mechanism according to claim 1, characterized in that, Each of the gear assemblies includes: The first gear is connected to the output shaft of the corresponding lifting drive component; The second gear meshes with the first gear, and the second gear is configured to connect to the lead screw shaft of the displacement lead screw.

3. The rotary lifting mechanism according to claim 2, characterized in that, The diameter of the first gear is larger than the diameter of the second gear.

4. The rotary lifting mechanism according to claim 3, characterized in that, The first sleeve includes: Vertical part; The horizontal portion is configured to protrude from the inner wall of the vertical portion toward the centerline, and the side of the horizontal portion is provided with a screw thread that engages with the displacement screw.

5. The rotary lifting mechanism according to claim 4, characterized in that, The top plate includes: At least one first limiting hole, each first limiting hole being configured to correspond to the first gear; At least one second limiting hole, each second limiting hole being configured to correspond to the second gear.

6. The rotary lifting mechanism according to claim 5, characterized in that, Also includes: A first fixing member is located above the first sleeve and connected to the rotary drive member. The first fixing member includes a limiting protrusion that protrudes downward from its bottom and has a stepped structure on its outer periphery. The second fixing member extends horizontally and is connected to the bottom of the limiting protrusion. The second fixing member and the stepped structure of the limiting protrusion form a limiting groove for limiting the first sleeve.

7. The rotary lifting mechanism according to any one of claims 1-6, characterized in that, The number of displacement screws is two.

8. The rotary lifting mechanism according to claim 7, characterized in that, The lifting drive component is a servo motor.

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