Lifting mechanism and heavy load transfer AGV device

Abstract

The utility model discloses a kind of lifting mechanism and heavy load transfer AGV device, including base, the side of base is equipped with speed reducer motor, the other side of base is equipped with support frame, screw rod is rotatably installed in support frame, the output shaft of speed reducer motor is connected with screw rod transmission, to drive screw rod rotation;Screw rod is threadedly cooperated and installed with nut sleeve, lifting plate is installed on nut sleeve, the opposite two ends of lifting plate respectively from the two sides of support frame stretch out, the two ends of lifting plate stretch out support frame are respectively installed with slot rod. Lifting mechanism is located in the middle of scissor folding mechanism, the slot rod of two sides is connected transmission with scissor folding mechanism, drives scissor folding mechanism telescopic motion, and stability is better.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station maintenance technology, and in particular to a lifting mechanism and a heavy-duty transfer AGV device. Background Technology

[0002] The turbine room of a hydroelectric power station is responsible for the installation, maintenance, and repair of key large-scale equipment such as propulsion coolers, high-pressure oil pumps, main and auxiliary crank arms, and water guide bearings. These pieces of equipment are large and heavy (typically several to tens of tons). AGV (Automated Guided Vehicle) trolleys are required for transporting these large pieces of equipment. However, currently used AGV trolleys cannot precisely adjust the height of the equipment after it has been transported to its designated position, making it impossible to complete the installation and alignment of large equipment. Therefore, we propose a lifting mechanism and a heavy-duty transport AGV device in this application.

[0003] A search revealed Chinese patent document CN214932956U, published on November 30, 2021, which discloses a novel lifting structure AGV trolley. The AGV includes a scissor lift platform, a rotary drive, and a lifting turntable. The scissor lift platform is located on top of the AGV body, the rotary drive is located on top of the scissor lift platform, and the circular lifting turntable is located at the center of the top of the rotary drive. By using the scissor lift platform, the lifting turntable can be raised to change the height of the goods; by using the rotary drive, the position of the goods can be adjusted, changing the overall center of gravity; and by using the lifting turntable, goods can be carried. Its advantages lie in its precise control of the lifting height and adjustment of the goods position, effectively improving the AGV trolley's support stability and load-bearing capacity. Its disadvantage is that the lifting platform is driven by a telescopic device, which, because it is located on one side of the lifting platform, results in poor stability when placing and transporting large equipment. Utility Model Content

[0004] The technical problem this invention aims to solve is to provide a lifting mechanism and a heavy-duty transfer AGV device. The lifting mechanism is located in the middle of the scissor telescopic mechanism, and the slotted rods on both sides are connected to the scissor telescopic mechanism for transmission, driving the scissor telescopic mechanism to extend and retract, resulting in better stability. To achieve the above objectives, this application provides a lifting mechanism, including a base, a geared motor mounted on one side of the base, a support frame mounted on the other side of the base, a screw rotatably mounted inside the support frame, and the output shaft of the geared motor being connected to the screw to drive the screw to rotate; a nut sleeve is threaded onto the screw, and a lifting plate is mounted on the nut sleeve, with opposite ends of the lifting plate extending from both sides of the support frame, and grooved rods are mounted on the ends of the lifting plate extending from the support frame.

[0005] Support seats are installed at both ends of the lifting plate extending from the support frame, and the grooved rod is installed on the support seats.

[0006] The support base and the support frame are connected by a sliding guide structure.

[0007] The sliding guide structure includes a linear guide rail and a slider. The linear guide rail is installed on the side of the support frame facing the support base, and the slider is installed on the linear guide rail. The slider is installed on the support base.

[0008] The support frame includes a base plate, side plates, and a top plate. Two side plates are fixedly installed between the base plate and the top plate. A screw is located between the two side plates. The upper end of the screw is rotatably connected to the top plate through a bearing, and the lower end is rotatably connected to the base plate through a bearing. The lower end of the screw extends downward and passes through the base plate and the base. The output shaft of the geared motor passes downward through the base. A drive wheel is installed on the output shaft of the geared motor, and a driven wheel is installed on the lower end of the screw. The drive wheel and the driven wheel are driven by a chain, belt, or gear pair.

[0009] Two connecting rods are installed between the grooved rods on both sides, and the two connecting rods are located on both sides of the support frame.

[0010] A heavy-duty transfer AGV device includes an AGV body, a scissor telescopic mechanism mounted on the AGV body, a platform mounted on the top of the scissor telescopic mechanism, and a lifting mechanism mounted on the AGV body. The lifting mechanism is located in the middle of the scissor telescopic mechanism, and slotted rods on both sides are connected to the scissor telescopic mechanism for transmission to drive the scissor telescopic mechanism to extend and retract.

[0011] One end of the bottom of the scissor telescopic mechanism is hinged to a support hinge via a first pin. The support hinge is fixedly installed on the top of the AGV body. A second pin is installed at the other end of the bottom of the scissor telescopic mechanism. A first sliding block is rotatably installed on the second pin. The first sliding block is slidably installed in a slide groove seat. The slide groove seat is fixedly installed on the top of the AGV body. The two ends of the top of the scissor telescopic mechanism are connected to the platform using the same structure.

[0012] The scissor lift mechanism includes two sets of scissor lift frames, with a lifting mechanism located between the two sets of scissor lift frames. Each set of scissor lift frames includes multiple cross forks, and each cross fork includes two connecting rods. The centers of the two connecting rods are hinged together by a third pin, and the ends of the connecting rods of adjacent cross forks are hinged together by a fourth pin. The fourth pin at one end of the cross fork of the first layer of the two sets of scissor lift frames is rotatably connected to one end of a grooved rod, and a second sliding block is rotatably mounted on the fourth pin at the other end of the rod. The second sliding block is slidably mounted in a groove at the other end of the grooved rod.

[0013] The two sets of scissor lifts located on the second layer and above have a single pivot pin at both ends of the cross fork.

[0014] Compared with the prior art, the above-conceptual technical solution conceived in this application has the following beneficial effects: 1. The base of this utility model is used for fixed installation on the top of the AGV body. The geared motor is used to drive the screw to rotate. Since the lifting plate is installed on the nut sleeve and the lifting plate is guided by the support frame, the lifting plate can only slide up and down and will not rotate. Slotted rods are installed at both ends of the lifting plate, and the slotted rods are used to connect with the scissor telescopic mechanism in the heavy-duty transfer AGV device. The screw drives the slotted rods to rise and fall, resulting in higher precision and better stability. Even in the event of a power outage, the slotted rods will not descend freely.

[0015] 2. This utility model uses a grooved rod to drive the scissor telescopic mechanism to rise and fall. Since the lifting mechanism is located in the middle of the scissor telescopic mechanism and is driven synchronously by the grooved rods on both sides, the stability is better. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a three-dimensional structural diagram of the lifting mechanism in this utility model.

[0018] Figure 2 This is a cross-sectional structural diagram of the lifting mechanism in this utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the heavy-duty transfer AGV device of this utility model.

[0020] Figure 4 This is a schematic diagram of the main structure of the heavy-duty transfer AGV device of this utility model.

[0021] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of AA.

[0022] Figure 6 This is a schematic diagram showing the connection between the grooved rod of the lifting mechanism and the scissor telescopic mechanism in this utility model.

[0023] Figure Labels Lifting mechanism 100, base 110, geared motor 120, drive wheel 121, support frame 130, bottom plate 131, side plate 132, top plate 133, screw 140, nut sleeve 141, driven wheel 142, lifting plate 150, support seat 160, chain 170, sliding guide structure 180, linear guide rail 181, slider 182, grooved rod 190, second sliding block 191, connecting rod 192; AGV body 200, hinge 210, first pin 211, slide seat 220, first sliding block 221, second pin 222; Scissor telescopic mechanism 300, cross fork 310, connecting rod 311, third pin 312, fourth pin 313; Stage 400. Detailed Implementation

[0024] To more clearly illustrate the purpose, technical solution, and beneficial effects of this application, a further detailed description of this application is provided below in conjunction with illustrations and specific embodiments. It should be specifically noted that the specific embodiments described below are only for illustrating the technical content of this application and do not constitute a limitation on the scope of protection of this application.

[0025] Regarding the explanation of terminology: In this application, "and / or" is used to describe the relationship between related objects, covering three possible situations: taking "A and / or B" as an example, it can indicate the situation where only A exists, A and B exist simultaneously, or only B exists; the symbol " / " indicates the "or" relationship between related objects, such as "A / B" which refers to A or B.

[0026] Regarding the description of the embodiments: The terms "exemplary" and "for example" appearing in this application are only used to illustrate the technical solutions through specific examples. It should be particularly emphasized that any implementation method or design scheme marked as "exemplary" or "for example" should not be construed as having an advantage over other solutions. Such expressions are only used to present the technical concepts more intuitively.

[0027] Example 1: See Figure 1 , 2 6. This embodiment provides a lifting mechanism 100, including a base 110. A reduction motor 120 is installed on one side of the base 110, and a support frame 130 is installed on the other side of the base 110. A screw 140 is rotatably installed inside the support frame 130. The output shaft of the reduction motor 120 is connected to the screw 140 for transmission to drive the screw 140 to rotate. A nut sleeve 141 is threadedly installed on the screw 140. A lifting plate 150 is installed on the nut sleeve 141. The two opposite ends of the lifting plate 150 extend from the two sides of the support frame 130, and slotted rods 190 are installed on the two ends of the lifting plate 150 extending from the support frame 130.

[0028] The base 110 is used for fixed installation on the top of the AGV body 200. The geared motor 120 is used to drive the screw 140 to rotate. Since the lifting plate 150 is installed on the nut sleeve 141 and the lifting plate 150 is slidably guided by the support frame 130, the lifting plate 150 can only slide up and down and will not rotate. Slotted rods 190 are installed at both ends of the lifting plate 150. The slotted rods 190 are used to connect to the scissor telescopic mechanism 300 in the heavy-duty transfer AGV device. The screw 140 drives the slotted rods 190 to rise and fall, resulting in higher precision and better stability. Even in the event of a power outage, the slotted rods 190 will not descend freely.

[0029] In this embodiment, the geared motor 120 is a servo motor equipped with a gear reducer.

[0030] Furthermore, support seats 160 are respectively installed at both ends of the lifting plate 150 extending from the support frame 130, and the channel rod 190 is installed on the support seats 160. The support seats 160 and the support frame 130 are connected by a sliding guide structure 180, which makes the support seats 160 less prone to shaking and further improves the stability of the channel rod 190 during lifting. Specifically, see Figure 1 , 2 The sliding guide structure 180 includes a linear guide rail 181 and a slider 182. The linear guide rail 181 is mounted on the side of the support frame 130 facing the support base 160, and the slider 182 is fitted onto the linear guide rail 181. The slider 182 is mounted on the support base 160. Both the linear guide rail 181 and the slider 182 are finished products from the prior art.

[0031] See Figure 2 The support frame 130 includes a base plate 131, side plates 132, and a top plate 133. The two side plates 132 are fixedly installed between the base plate 131 and the top plate 133. The screw 140 is located between the two side plates 132. The upper end of the screw 140 is rotatably connected to the top plate 133 through a bearing, and the lower end is rotatably connected to the base plate 131 through a bearing. The lower end of the screw 140 extends downward and passes through the base plate 131 and the base 110. The output shaft of the geared motor 120 passes downward through the base 110. A drive wheel 121 is installed on the output shaft of the geared motor 120, and a driven wheel 142 is installed on the lower end of the screw 140. The drive wheel 121 and the driven wheel 142 are driven by a chain 170, a belt, or a gear pair.

[0032] Specifically, when the driving wheel 121 and the driven wheel 142 are sprockets, the driving wheel 121 and the driven wheel 142 are connected and driven by a chain 170. When the driving pulley 121 and the driven pulley 142 are belt pulleys, the driving pulley 121 and the driven pulley 142 are connected by a belt for transmission; when the belt pulley is a synchronous pulley, the driving pulley 121 and the driven pulley 142 are connected by a synchronous belt for transmission.

[0033] When the driving gear 121 and the driven gear 142 are gears, the driving gear 121 and the driven gear 142 mesh and transmit power.

[0034] Further, see Figure 6 Two connecting rods 192 are installed between the two slotted rods 190 on both sides, and the two connecting rods 192 are located on both sides of the support frame 130. The two slotted rods 190 on both sides are connected into a whole to enable the slotted rods 190 to rise and fall stably.

[0035] Example 2: Based on Example 1, see Figures 3-6 A heavy-duty transfer AGV device includes an AGV body 200, a scissor telescopic mechanism 300 mounted on the AGV body 200, a platform 400 mounted on the top of the scissor telescopic mechanism 300, and a lifting mechanism 100 mounted on the AGV body 200. The lifting mechanism 100 is located in the middle of the scissor telescopic mechanism 300, and the slotted rods 190 on both sides are connected to the scissor telescopic mechanism 300 for transmission, so as to drive the scissor telescopic mechanism 300 to extend and retract.

[0036] Specifically, both the AGV body 200 and the scissor telescopic mechanism 300 adopt existing technologies. The lifting mechanism 100 is located in the middle of the scissor telescopic mechanism 300, and the slotted rods 190 on both sides are connected to the scissor telescopic mechanism 300 for transmission, thereby driving the scissor telescopic mechanism 300 to extend and retract smoothly.

[0037] Specifically, see Figure 3 One end of the bottom of the scissor telescopic mechanism 300 is hinged to the support hinge 210 via the first pin 211. The support hinge 210 is fixedly installed on the top of the AGV body 200. The other end of the bottom of the scissor telescopic mechanism 300 is equipped with a second pin 222. A first sliding block 221 is rotatably installed on the second pin 222. The first sliding block 221 is slidably installed in the slide seat 220. The slide seat 220 is fixedly installed on the top of the AGV body 200. The top two ends of the scissor telescopic mechanism 300 are connected to the platform 400 using the same structure. That is, one end of the top of the scissor telescopic mechanism 300 is hinged to the hinge 210 through the first pin 211. The hinge 210 is fixed to the bottom of the platform 400. The other end of the top of the scissor telescopic mechanism 300 is equipped with a second pin 222. A first sliding block 221 is rotatably mounted on the second pin 222. The first sliding block 221 is slidably mounted in the slide seat 220. The slide seat 220 is fixedly mounted on the bottom of the platform 400.

[0038] In practice, the first sliding block 221 is provided with a mounting hole, a bearing is installed in the mounting hole, and the second pin 222 is fixedly installed on the inner ring of the bearing.

[0039] See Figure 2The scissor lift mechanism 300 includes two sets of scissor lift frames, with the lifting mechanism 100 located between them. Each set of scissor lift frames includes multiple cross forks 310. Each cross fork 310 includes two connecting rods 311, the centers of which are hinged by a third pin 312. The ends of the connecting rods 311 of adjacent cross forks 310 are hinged by a fourth pin 313. The fourth pin 313 at one end of the cross fork 310 in the first layer of the two sets of scissor lift frames is rotatably connected to one end of a slotted rod 190. A second sliding block 191 is rotatably mounted on the fourth pin 313 at the other end of the slotted rod 190. The second sliding block 191 is slidably installed in a groove at the other end of the slotted rod 190. The scissor lift mechanism 300 is driven to rise and fall by the slotted rod 190. Since the lifting mechanism 100 is located in the middle of the scissor lift mechanism 300 and is driven synchronously by the slotted rods 190 on both sides, the stability is better.

[0040] Similarly, the second sliding block 191 is provided with a mounting hole, in which a bearing is installed, and the fourth pin 313 is fixedly installed on the inner ring of the bearing.

[0041] Further, see Figure 6 The fourth pin 313 at both ends of the cross fork 310 of the two scissor lifts located on the second layer and above is a whole shaft. The distance between the two scissor lifts is limited by the step on the whole shaft.

[0042] See Figure 5 The top of the AGV body 200 is provided with mounting holes, and the bottom of the lifting mechanism 100 is fixedly installed in the mounting holes of the AGV body 200 through the base 110. The base 110 is welded and fixed to the AGV body 200.

[0043] The working principle or working process of this utility model: See Figure 5 In operation, the AGV body 200 moves the large equipment on top of the loading platform 400. After the large equipment is transferred to its position and adjusted, the reduction motor 120 is started. The reduction motor 120 drives the screw 140 to rotate. Since the lifting plate 150 is installed on the nut sleeve 141 and is guided by the support frame 130, the lifting plate 150 is driven to rise and fall. The lifting plate 150 has slotted rods 190 installed at both ends. The slotted rods 190 are connected to the scissor telescopic mechanism 300 in the heavy-duty transfer AGV device. The screw 140 drives the slotted rods 190 to rise and fall, resulting in higher precision and better stability. Even in the event of a power outage, the slotted rods 190 will not descend freely, and the large equipment on top of the loading platform 400 will not fall.

[0044] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A lifting mechanism (100), characterized in that: The device includes a base (110), a geared motor (120) installed on one side of the base (110), and a support frame (130) installed on the other side of the base (110). A screw (140) is rotatably installed inside the support frame (130). The output shaft of the geared motor (120) is connected to the screw (140) to drive the screw (140) to rotate. A nut sleeve (141) is threadedly installed on the screw (140), and a lifting plate (150) is installed on the nut sleeve (141). The two ends of the lifting plate (150) extend from the two sides of the support frame (130), and a grooved rod (190) is installed on the two ends of the lifting plate (150) extending out of the support frame (130).

2. The lifting mechanism (100) according to claim 1, characterized in that: The lifting plate (150) extends out of the support frame (130) and is also equipped with support seats (160) at both ends, and the grooved rod (190) is installed on the support seat (160).

3. A lifting mechanism according to claim 2, characterized in that: The support base (160) and the support frame (130) are connected by a sliding guide structure (180).

4. The lifting mechanism (100) according to claim 3, characterized in that: The sliding guide structure (180) includes a linear guide rail (181) and a slider (182). The linear guide rail (181) is installed on the side of the support frame (130) facing the support base (160). The slider (182) is installed on the linear guide rail (181) and is mounted on the support base (160).

5. The lifting mechanism (100) according to claim 1, characterized in that: The support frame (130) includes a base plate (131), side plates (132) and a top plate (133). The two side plates (132) are fixedly installed between the base plate (131) and the top plate (133). The screw (140) is located between the two side plates (132). The upper end of the screw (140) is rotatably connected to the top plate (133) through a bearing, and the lower end is rotatably connected to the base plate (131) through a bearing. The lower end of the screw (140) extends downward and passes through the base plate (131) and the base (110). The output shaft of the geared motor (120) passes downward through the base (110). The output shaft of the geared motor (120) is equipped with a drive wheel (121), and the lower end of the screw (140) is equipped with a driven wheel (142). The drive wheel (121) and the driven wheel (142) are driven by a chain (170), a belt or a gear pair.

6. The lifting mechanism (100) according to claim 1, characterized in that: Two connecting rods (192) are installed between the grooved rods (190) on both sides, and the two connecting rods (192) are located on both sides of the support frame (130).

7. A heavy-duty transfer AGV device, comprising an AGV body (200), a scissor telescopic mechanism (300) mounted on the AGV body (200), and a platform (400) mounted on the top of the scissor telescopic mechanism (300), characterized in that: The AGV body (200) is equipped with a lifting mechanism (100) as described in any one of claims 1 to 6. The lifting mechanism (100) is located in the middle of the scissor telescopic mechanism (300), and the slotted rods (190) on both sides are connected to the scissor telescopic mechanism (300) for transmission, so as to drive the scissor telescopic mechanism (300) to extend and retract.

8. A heavy-duty transfer AGV device according to claim 7, characterized in that: One end of the bottom of the scissor telescopic mechanism (300) is hinged to the support hinge (210) via a first pin (211). The support hinge (210) is fixedly installed on the top of the AGV body (200). The other end of the bottom of the scissor telescopic mechanism (300) is equipped with a second pin (222). A first sliding block (221) is rotatably installed on the second pin (222). The first sliding block (221) is slidably installed in the slide seat (220). The slide seat (220) is fixedly installed on the top of the AGV body (200). The two ends of the top of the scissor telescopic mechanism (300) are connected to the platform (400) with the same structure.

9. A heavy-duty transfer AGV device according to claim 8, characterized in that: The scissor lift mechanism (300) includes two sets of scissor lift frames, and the lifting mechanism (100) is located between the two sets of scissor lift frames. Each set of scissor lift frames includes multiple cross forks (310). Each cross fork (310) includes two connecting rods (311). The centers of the two connecting rods (311) are hinged through a third pin (312). The ends of the connecting rods (311) of adjacent cross forks (310) are hinged through a fourth pin (313). The fourth pin (313) at one end of the cross fork (310) of the first layer of the two sets of scissor lift frames is rotatably connected to one end of the grooved rod (190). The fourth pin (313) at the other end is rotatably mounted with a second sliding block (191). The second sliding block (191) is slidably mounted in the groove at the other end of the grooved rod (190).

10. A heavy-duty transfer AGV device according to claim 9, characterized in that: The four pins (313) at both ends of the cross fork (310) of the two sets of scissor lifts located on the second layer and above are a single shaft.

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