High-load agv jacking device

Abstract

The application discloses a high-load AGV jacking device, which comprises a screw slide rail assembly, a multi-link lifting assembly, a jacking platform and a driving assembly. The screw slide rail assembly comprises a screw slide rail, a link slide table connected with a positive and negative tooth screw nut and a lower slide block. The multi-link lifting assembly comprises links, bearings, shaft retaining rings, bearing limiters, keys, stop rings and five kinds of pin shafts. The driving assembly comprises a motor, a shaft coupling and a screw nut. Two ends of the link are a link slide table fixed end and a jacking platform fixed end, and the link slide table fixed end and the jacking platform fixed end are connected through bearings and pin shafts. The link slide table is composed of a link slide table upper part and a link slide table lower part. The link slide table lower part is connected with the screw slide rail slide block through bolts, and the link slide table upper part is connected with the link slide table lower part through screws. The motor drives the positive and negative tooth screw to rotate and drives the two end link slide tables to move, so as to drive the jacking platform to ascend and descend. The jacking device has the advantages of simple structure, high efficiency and small space occupation.

Description

Technical Field

[0001] This invention relates to the field of AGV (Automated Guided Vehicle) technology, and in particular to a high-load AGV lifting device. Background Technology

[0002] Automated Guided Vehicles (AGVs) are industrial vehicles that load goods automatically or manually, travel automatically along a set route or tow a cargo trolley to a designated location, and then load and unload goods automatically or manually. In existing technology, the technology of AGVs cruising along fixed paths is relatively mature. Platform AGVs that move materials onto the vehicle body via a material handling mechanism, towed AGVs that move materials by traction, and backpack AGVs that use lifting devices to carry goods are all widely used in various automated production processes.

[0003] Existing lifting devices typically use electric push rods to directly drive the lifting platform up and down. These devices have a small load capacity, the lifting platform is not very stable, and they occupy a large amount of space. Summary of the Invention

[0004] The purpose of this invention is to provide a high-load AGV lifting device that has a simple structure, long service life, strong load-bearing capacity, high stability, convenient and efficient use, and occupies little space.

[0005] To achieve the above objectives, the solution of the present invention is as follows: a high-load AGV lifting device, comprising a screw and slide rail assembly and a lifting platform, wherein a multi-link lifting assembly and a drive assembly are provided between the screw and slide rail assembly and the lifting platform; the screw and slide rail assembly includes a multi-link connecting rod and a series of shaft parts cooperating with the connecting rod;

[0006] The lead screw slide rail assembly includes the lead screw slide rail and the upper and lower parts of the connecting rod slide table. The connecting rod slide table supports the load by cooperating with the connecting rod through a pin. The connecting rod slide table slides left and right on the connecting rod slide rail.

[0007] The two ends of the connecting rod are a lifting platform fixed end and a connecting rod slide fixed end, respectively. The lifting platform fixed end is connected to the lifting platform by a pin, and the connecting rod slide fixed end is connected to the connecting rod slide assembly by a pin.

[0008] Furthermore, two sets of connecting rod lifting assemblies are symmetrically arranged between the lifting platform and the connecting rod slide. Each set of connecting rod lifting assemblies includes eight connecting rods that transmit power. There are two sets of connecting rod slides, with two slides in each set. The two sets of connecting rod slides are symmetrically installed on both sides below the lifting platform.

[0009] Furthermore, the two sets of drive components are respectively located on the left side of the two positive and negative threaded screws. Each drive component includes a motor, a coupling, a screw, and a screw nut connected axially in sequence. The output end of the motor is axially connected to the screw via the coupling. The nut is fixedly connected to the connecting rod slide, and the connecting rod nut is movably mounted on the screw. The motor drives the screw to rotate via the coupling. The rotation of the screw causes the nut and the connecting rod slide to move axially along the screw, thereby driving the multi-link lifting assembly to push the lifting platform upward.

[0010] Furthermore, the lead screw slide rail is provided with two limiting blocks, which are symmetrically installed inside the lead screw slide rail to limit the movement range of the connecting rod slide table and thus limit the lifting range of the lifting platform.

[0011] Furthermore, the lifting base is provided with a motor mounting bracket, and the motor is fixed to the lifting base through the mounting bracket.

[0012] Furthermore, the sliding block includes a slider and a pulley. The pulley is installed at the lower end of the slider and is embedded in the groove of the lead screw guide rail. The pulley moves along the groove.

[0013] Furthermore, the multi-link assembly includes connecting rods, bearings, shaft retaining rings, bearing limiting components, stop rings, keys, and five types of pins. Each connecting rod has a bearing installed inside both ends, which mates with the pins. Keys restrict rotation between the lifting platform connecting groove and the connecting rod slide connecting groove and the pins. The bearing limiting components secure the outer ring of the bearing to the connecting rod with screws, and the shaft retaining rings secure the inner ring of the bearing to the pins.

[0014] After adopting the above solution, the beneficial effects of the present invention are as follows:

[0015] This invention includes a lead screw and slide rail assembly, a multi-link lifting assembly, a lifting platform, and a drive assembly between the lifting base and the lifting platform. The two ends of the connecting rod are respectively the fixed end of the connecting rod slide and the fixed end of the lifting platform, both connected by bearings and pins. Pin 3 is located in the connecting slots on both sides of the lifting platform, and pin 4 is located in the connecting slot at the lower end of the lifting platform. Pin 3 carries two connecting rods, and pin 4 carries four connecting rods. Pin 1 is located at the upper end of the connecting rod slide, pin 5 is located at the lower end of the right connecting rod slide, and pin 2 is located at the lower end of the left connecting rod slide. Pins 1 and 5 each carry two connecting rods. The connecting rod slide consists of an upper part and a lower part. The lower part of the connecting rod slide is bolted to the lower sliding block, and the upper part of the connecting rod slide is connected to the lower part of the connecting rod slide by screws. Additionally, the lower part of the connecting rod slide is bolted to the lead screw nut and the lower sliding block. The motor drives the forward and reverse threaded rods to rotate, which in turn causes the sliding tables at both ends of the connecting rods to move in opposite directions, thereby raising or lowering the lifting platform.

[0016] This lifting device has a simple structure and is easy to operate. It can withstand relatively large loads, and the lifting platform can operate smoothly with a low failure rate. In addition, unlike traditional lifting devices, this lifting device does not use connecting rods and hinges. Instead, it transmits power through bearings and pins installed in the connecting rods, resulting in strong load-bearing capacity, less wear and tear, longer service life, and a smaller space occupation after the platform is lowered into place. Attached Figure Description

[0017] Figure 1 This is a diagram showing the lifting device of the present invention in its unfolded and rising state;

[0018] Figure 2 This is a diagram showing the retracted and descending state of the lifting device of the present invention;

[0019] Figure 3 This is a schematic diagram of the installation of the pin 1 shaft system parts;

[0020] Figure 4 This is a schematic diagram of the installation of the pin 2 shaft system parts;

[0021] Figure 5 This is a schematic diagram of the installation of the pin-shaft 3 shaft system parts;

[0022] Figure 6 This is a schematic diagram of the installation of the four-axis pin system parts;

[0023] Figure 7 This is a schematic diagram of the installation of the five-axis pin system parts;

[0024] Label Explanation:

[0025] 1. Lifting platform; 2. Lead screws (both positive and negative); 3. Pin 5; 4. Lead screw nut; 5. Lower sliding component; 6. Lead screw slide rail; 7. Lower part of connecting rod slide; 8. Pin 2; 9. Upper part of connecting rod slide; 10. Pin 1; 11. Pin 4; 12. Pin 3; 13. Bearing fixing component; 14. Bearing; 15. Retaining ring; 16. Shaft retaining ring; Detailed Implementation

[0026] Obviously, the described embodiments are only some, not all, embodiments of the present invention, and are merely used to illustrate the function of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] This invention provides a high-load AGV lifting device, which is installed on the AGV trolley and uses lifting to move goods. Figures 1 to 7As shown, it includes a lead screw and slide rail assembly, a multi-link lifting assembly, a lifting platform 1, and a drive assembly; the lead screw and slide rail assembly includes a lead screw and slide rail 6, a connecting rod slide table connected to the positive and negative thread lead screw nut 4, and a lower sliding block 5; the multi-link lifting assembly includes a connecting rod 17, a bearing 14, a shaft retaining ring 16, a bearing limiting component 13, a key, a stop ring 15, and five types of pins; the drive assembly includes a motor, a coupling, and a lead screw nut.

[0029] The two ends of the connecting rod are the connecting rod slide fixed end and the lifting platform fixed end, respectively. Both the connecting rod slide fixed end and the lifting platform fixed end are connected to the pins via bearings 14. Pin four 11 is located in the connecting slots on both sides of the lifting platform, and pin two 8 is located in the connecting slot at the lower end of the lifting platform. Pin two 8 carries two connecting rods, and pin three 12 carries four connecting rods. Pin one 10 is located at the upper end of the connecting rod slide 9, pin five 3 is located at the lower end of the right connecting rod slide, and pin two 8 is located at the lower end of the left connecting rod slide.

[0030] The connecting rod slide 9 consists of an upper part and a lower part. The lower part of the connecting rod slide is bolted to the lead screw slide rail sliding block, and the upper part of the connecting rod slide is connected to the lower part of the connecting rod slide with screws. The lower part of the connecting rod slide is bolted to the lead screw nut. The motor drives the positive and negative threaded lead screw to rotate, causing the two connecting rod slides at both ends to move in opposite directions, thereby driving the lifting platform to rise or fall.

[0031] like Figures 1 to 2 The diagrams shown are of the lifting device in its retracted and descending state and its deployed and ascending state, respectively.

[0032] Key points such as Figure 1 As shown, to ensure the stability of the lifting device, two sets of connecting rod lifting assemblies are symmetrically arranged between the lifting platform and the connecting rod slide. Each set of connecting rod lifting assemblies includes eight connecting rods to transmit power. There are two sets of connecting rod slides, with two slides in each set. The two sets of connecting rod slides are symmetrically installed on both sides below the lifting platform.

[0033] Key points such as Figure 3-7 As shown, the multi-link assembly includes connecting rods, bearings, shaft retaining rings, bearing limiting components, stop rings, keys, and five types of pins. Each connecting rod has a bearing installed inside both ends, which mates with the pins. Keys restrict rotation between the lifting platform connecting groove and the connecting rod slide connecting groove and the pins. The bearing limiting components connect and fix the outer ring of the bearing to the connecting rod with screws, and the shaft retaining rings fix the inner ring of the bearing to the pins.

[0034] The working process of this lifting device is as follows:

[0035] The motor drives the lead screw 2 to rotate through the coupling. The rotation of the lead screw causes the nut 4 and the connecting rod slide to slide. The sliding of the connecting rod slide causes the multi-link lifting assembly to lift or lower the lifting platform, thereby completing the lifting action of the goods.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. All equivalent changes made based on the key design features of this case shall fall within the protection scope of this case.

Claims

1. A high-load AGV lifting device, characterized in that: It includes a lead screw and slide rail assembly, a multi-link lifting assembly, a lifting platform, a base, and a drive assembly; the lead screw and slide rail assembly includes a lead screw and slide rail and a connecting rod slide table connected to the lead screw nut with positive and negative threads; the multi-link lifting assembly includes connecting rods, bearings, shaft retaining rings, bearing limiters, stop rings, keys, and five types of pins; the drive assembly includes a motor, coupling, and lead screw nut. The connecting rod has two ends: a fixed end on the connecting rod slide and a fixed end on the lifting platform. Both ends are connected to pins via bearings. Pin 3 is located in the connecting slots on both sides of the lifting platform, and pin 4 is located in the connecting slot at the bottom of the lifting platform. Pin 3 carries two connecting rods, and pin 4 carries four connecting rods. Pin 1 is located at the top of the connecting rod slide, pin 5 is located at the bottom of the right connecting rod slide, and pin 2 is located at the bottom of the left connecting rod slide. Pins 1 and 5 each carry two connecting rods. The connecting rod slide consists of an upper part and a lower part. The lower part of the connecting rod slide is bolted to the lower sliding block, while the upper part is connected to the lower part with screws. Additionally, the lower part is bolted to the lead screw nut and the lower sliding block. The motor drives the forward and reverse threaded screws to rotate, causing the two connecting rod slides at both ends to move in opposite directions, thus raising or lowering the lifting platform.

2. The high-load AGV lifting device as described in claim 1, characterized in that: The lead screw and guide rail assembly includes a lead screw and guide rail, and two connecting rod slides connected to the lead screw nut. The two connecting rod slides are mirror-symmetrically configured with respect to the lifting platform and mate with the same lead screw with both positive and negative threads. The connecting rod slides and the lower sliding block slide on the lead screw and guide rail.

3. The high-load AGV lifting device as described in claim 1, characterized in that: The multi-link lifting assembly includes connecting rods, bearings, shaft retaining rings, bearing fixing parts, stop rings, and five types of pins. The lifting platform and the connecting rod slide are connected by the connecting rod assembly. Two sets of the multi-link assembly are symmetrically arranged on the left and right sides of the lifting platform. Each set of the multi-link assembly includes eight connecting rods, and each set of the multi-link assembly is connected to a set of lead screw and slide rail assemblies.

4. The high-load AGV lifting device as described in claim 1, characterized in that: The drive assembly is located on the left side of the positive and negative threaded screw. The drive assembly includes a motor, a coupling, a positive and negative threaded screw, and a screw nut connected axially in sequence. The output end of the motor is axially connected to the positive and negative threaded screw through the coupling, and the screw nut is movably mounted on the screw.

5. The high-load AGV lifting device as described in claim 1, characterized in that: The five pin positions of the multi-link lifting assembly are as follows: Pin 3 is located in the connecting slots on both sides of the lifting platform; Pin 4 is located in the connecting slot at the lower end of the lifting platform; Pin 3 carries two connecting rods, and Pin 4 carries four connecting rods. Pin 1 is located at the upper end of the connecting rod slide; Pin 5 is located at the lower end of the right connecting rod slide; and Pin 2 is located at the lower end of the left connecting rod slide.

6. The high-load AGV lifting device as described in claim 1, characterized in that: Each link of the multi-link lifting assembly has a bearing installed inside both ends. The bearing engages with a pin, and the rotation of the lifting platform connecting groove and the link slide connecting groove is restricted by a key. The outer ring of the bearing is fixed to the link by screws using bearing limiting components. The layout of the components on pin 1 is shown in Figure 3. A retaining ring is installed on the outside of the connecting rod slide to limit the position of the shaft. The inner ring of the bearing and the pin are fixed by a retaining ring, and the outer ring of the bearing is fixed to the connecting rod by screws using a bearing limiting component.

7. The high-load AGV lifting device as described in claim 1, characterized in that: The layout of the components on the shaft of pin 2 is shown in Figure 4. A retaining ring is installed inside the connecting rod slide to limit the position of the shaft. The inner ring of the bearing and the pin are fixed by a retaining ring. The outer ring of the bearing is fixed to the connecting rod by bolts using a bearing limiting component.

8. The high-load AGV lifting device as described in claim 1, characterized in that: The layout of the components on the shaft of pin 3 is shown in Figure 5. A retaining ring is installed to limit the position of the shaft. The inner ring of the bearing and the pin are fixed by a retaining ring. The outer ring of the bearing is fixed to the connecting rod by bolts using a bearing limiting component.

9. The high-load AGV lifting device as described in claim 1, characterized in that: The layout of the components on pin 4 is shown in Figure 6. A retaining ring is used to limit the position of the pin. The pin shoulder and the retaining ring fix the inner ring of the bearing and the pin. The outer ring of the bearing is fixed to the connecting rod by bolts using a bearing retaining member.

10. The high-load AGV lifting device as described in claim 1, characterized in that: The layout of the components on pin 5 is shown in Figure 7. A retaining ring is installed to limit the position of the shaft. The pin shoulder and the shaft retaining ring fix the inner ring of the bearing and the pin. The outer ring of the bearing is fixed to the connecting rod by bolts using a bearing limiting component.

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