Automatic jacking device

Abstract

The utility model discloses an automatic jacking device which comprises a hinge base and a transmission screw, two equal-length threaded sections are arranged on the transmission screw, the thread directions of the two threaded sections are opposite, the two threaded sections are respectively provided with a transmission nut, the transmission nuts are connected with the threaded sections through threads, the bottom of the hinge base is symmetrically connected with upper folding arms, and the lower folding arms are symmetrically connected with lower folding arms. The top end of the upper folding arm is hinged to the hinge seat, the bottom end of the upper folding arm is hinged to the transmission nut, and the end of the transmission screw is connected with a driving mechanism. The structural layout of the automatic jacking device is unfolded around the transmission screw rod, the upper folding arm is vertically folded and unfolded in the occupied area of the transmission screw rod, the shape of the transmission screw rod determines that the automatic jacking device is long and narrow in overall shape, small in occupied area and suitable for being used in a narrow space. The upper folding arms which are symmetrically arranged provide multi-point support, and can ensure that the application of support force has synchronism and balance, so that an object can be better kept stable in the jacking process.

Description

Technical Field

[0001] The utility model relates to the technical field of material conveying, and more specifically, to an automatic lifting device. Background Art

[0002] In production activities and daily life, there is often a need to lift and transport objects. In the prior art, some lifting devices are often used to complete the lifting and transportation of objects. However, the lifting devices in the prior art are usually large in size and complex in structure, and are not suitable for use in places with narrow spaces. Although some lifting devices have been targeted and are suitable for use in narrow spaces, they lack support stability. The utility model patent with publication number CN215880556U discloses an automatic lifting device for a welding workstation fixture, including a base, a mounting plate and a positioning mechanism, the mounting plate is arranged on the upper part of the base, the positioning mechanism is mounted on the mounting plate, and also includes a lifting mechanism, the lifting mechanism includes a lifting cylinder, a mounting seat and a lifting support block; the lifting cylinder is mounted on the mounting plate through a mounting seat fixed on its side; the lifting support block is mounted on the extension end of the telescopic rod of the lifting cylinder, and corresponds to the workpiece mounted on the positioning mechanism. When the workpiece is welded, the lifting cylinder drives the lifting support block to rise, and the workpiece is ejected from the positioning mechanism to complete the automatic disassembly of the workpiece. Although the utility model can be used in a narrow space, the supporting force during jacking is only provided by the jacking cylinder, the supporting points are few, the supporting area is limited, and the supporting stability is insufficient. Utility Model Content

[0003] Existing jacking devices are either large in size and complex in structure, and are not suitable for use in narrow spaces; or are suitable for use in narrow spaces but have insufficient supporting stability. To overcome this defect, the utility model provides an automatic jacking device that is suitable for use in narrow spaces and has good supporting stability.

[0004] The technical solution of the utility model is: an automatic lifting device, including a hinge seat and a transmission screw, the transmission screw is provided with two threaded sections of equal length, the two threaded sections have opposite thread rotation directions, each of the two threaded sections is provided with a transmission nut, the transmission nut is connected to the threaded section by threads, the bottom of the hinge seat is symmetrically connected with an upper folding arm, the top of the upper folding arm is hinged on the hinge seat, the bottom of the upper folding arm is hinged on the transmission nut, and the end of the transmission screw is connected with a driving mechanism. The driving mechanism drives the transmission screw, and the rotation of the transmission screw drives the transmission nuts at both ends to move inward synchronously, pushing the upper folding arm to gradually stand up, and the top pressure hinge seat rises steadily. The structural layout of the utility model is developed around the transmission screw, and the upper folding arm is vertically folded and stretched within the area occupied by the transmission screw. The shape of the transmission screw determines that the overall shape of the automatic lifting device is relatively narrow and long, with a small area occupied, and is suitable for use in a small space. At the same time, the symmetrically arranged upper folding arms provide multi-point support, and can ensure that the application of the supporting force is synchronous and balanced, so as to better keep the object stable during the lifting process.

[0005] Preferably, the automatic lifting device further comprises a connecting base, the connecting base and the hinge seat are symmetrically located on both sides of the transmission screw, the connecting base and the transmission nut are connected through a lower folding arm, and the two ends of the lower folding arm are respectively hinged to the connecting base 5 and the transmission nut. Similar structures are arranged on the upper and lower sides of the transmission screw, and after the transmission screw drives the transmission nut, a larger cumulative size change can be generated before and after the upper and lower folding arms are unfolded. If the connecting base is used as a fixed point, the hinge seat obtains a larger lifting stroke.

[0006] Preferably, the automatic lifting device further comprises an outer frame, the transmission screw is located inside the outer frame, guide grooves are provided on both sides of the outer frame, and the transmission nut is slidably connected with the guide grooves through guide pins. The outer frame can directly provide installation support for the transmission screw and other components, and can better conceal the transmission screw and the transmission nut. The transmission nut is connected to the guide groove through the guide pin, and the transmission nut can be positioned circumferentially to prevent the transmission nut from rotating with the transmission screw, and can only slide axially along the guide groove, thereby ensuring that the hinge seat rises in parallel.

[0007] Preferably, the upper folding arm and the lower folding arm are both double-body structures, and each upper folding arm and each lower folding arm include two parallel rods. The upper folding arm and the lower folding arm adopt a double-body structure, and the rods constituting each upper folding arm and the lower folding arm can form a multi-point connection with the connection object, and the mechanical structure is more stable.

[0008] Preferably, the hinge seat is connected with a mounting platform. The hinge seat is mainly used as a connector, and its surface area is limited, so it is not suitable to be directly used to carry objects or to be connected with other structures. Connecting the mounting platform can expand the bearing area or connection area.

[0009] Preferably, the driving mechanism includes a motor, and the output end of the motor is connected to the transmission screw. The motor drives the transmission screw, which has a high degree of automation, stable and accurate operation, and is suitable for embedding in automation equipment.

[0010] As a preference, the motor is perpendicular to the transmission screw, and the output end of the motor is connected to the transmission screw via a bevel gear set. The motor can be perpendicular to the transmission screw, which is suitable for a space with limited length and sufficient depth.

[0011] As an alternative, the motor is coaxial with the transmission screw, and the output end of the motor is connected to the transmission screw through a coupling. The motor can also be coaxial with the transmission screw, which is suitable for a space with sufficient length and limited depth.

[0012] The beneficial effects of the utility model are:

[0013] The structure is compact and occupies a small area, which is suitable for lifting objects in a small space. The structural layout of the utility model is developed around the transmission screw, and the upper folding arm is vertically folded and stretched within the area occupied by the transmission screw. The shape of the transmission screw determines that the overall shape of the automatic lifting device is relatively narrow and long, and the area occupied is small, which is suitable for use in a small space.

[0014] The supporting stability is good. The symmetrically arranged upper folding arms in the utility model provide multi-point support and can ensure that the application of the supporting force is synchronous and balanced, so as to better keep the object stable during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of the utility model;

[0016] Figure 2 It is a front view of the utility model;

[0017] Figure 3 It is a top view of the utility model.

[0018] In the figure, 1-hinge seat, 2-transmission screw, 3-transmission nut, 4-upper folding arm, 5-connecting base, 6-lower folding arm, 7-outer frame, 8-guide groove, 9-mounting platform, 10-motor, 11-driving bevel gear, 12-driven bevel gear, 13-guide pin. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the specific embodiments of the drawings.

[0020] Embodiment 1:

[0021] like Figures 1 to 3As shown, an automatic lifting device includes a hinge seat 1, a transmission screw 2, a connecting base 5 and an outer frame 7. The transmission screw 2 is provided with two threaded sections of equal length, and the threaded directions of the two threaded sections are opposite. A transmission nut 3 is provided on each of the two threaded sections, and the transmission nut 3 is connected to the threaded section by threads. Guide pins 13 are fixed on both sides of the transmission nut 3. A pair of upper folding arms 4 are symmetrically connected to the bottom of the hinge seat 1. The top ends of the two upper folding arms 4 are hinged to the hinge seat 1 together, and the bottom ends of the two upper folding arms 4 are hinged to the guide pins 13 of the two transmission nuts 3 one by one. The connecting base 5 and the hinge seat 1 are symmetrically located on both sides of the transmission screw 2. The connecting base 5 is connected to the transmission nut 3 through the lower folding arm 6. The two ends of the lower folding arm 6 are respectively hinged to the guide pins 13 on the connecting base 5 and the transmission nut 3. The two upper folding arms 4 and the two lower folding arms 6 are arranged in a rhombus. The outer frame 7 is in the shape of a rectangular parallelepiped, and has a cavity that passes through the top and bottom surfaces. The transmission screw 2 and the transmission nut 3 are located in the cavity. Guide grooves 8 are provided on both sides of the outer frame 7, and the transmission nut 3 is slidably connected to the guide grooves 8 through guide pins 13. The upper folding arm 4 and the lower folding arm 6 are both double-body structures. Each upper folding arm 4 and each lower folding arm 6 include two parallel rods. The two rods in each upper folding arm 4 are located on both sides of the hinge seat 1 and the transmission nut 3, respectively, and the two rods in each lower folding arm 6 are located on both sides of the connection base 5 and the transmission nut 3, respectively. A mounting platform 9 is connected to the hinge seat 1. The end of the transmission screw 2 is connected to a driving mechanism, which includes a motor 10 and a bevel gear set. The bevel gear set includes an active bevel gear 11 and a driven bevel gear 12. A motor mounting interface is provided at the top of one end of the outer frame 7. The motor 10 is mounted on the motor mounting interface. The motor 10 is perpendicular to the transmission screw 2. The active bevel gear 11 is keyed to the output end of the motor 10. The driven bevel gear 12 is keyed to the end of the transmission screw 2. The active bevel gear 11 is meshed with the driven bevel gear 12, so that the output end of the motor 10 is connected to the transmission screw 2. The automatic lifting device is arranged on the loading station on the production line, and the connecting base 5 is fixed on the table of the production line as the height measurement base point of the automatic lifting device. The motor 10 is controlled by the PLC of the production line.

[0022] When the automatic lifting device is working, the torque output by the motor 10 is transmitted to the transmission screw 2 through the bevel gear set, driving the transmission screw 2 to rotate. Since the guide pin on the transmission nut 3 is connected in the guide groove 8, the transmission nut 3 will not rotate with the transmission screw 2. The transmission nut 3 and the transmission screw 2 rotate relative to each other. The thread engagement between the transmission nut 3 and the transmission screw 2 converts the relative rotation between the two into relative axial motion. Finally, the transmission screw 2 drives the two transmission nuts 3 to move inward synchronously, that is, approach each other, push the upper folding arm 4 and the lower folding arm 6 to gradually stand up, and the top hinge seat 1 rises steadily. On the contrary, when the motor 10 drives the transmission screw 2 to rotate in the opposite direction, the transmission screw 2 drives the two transmission nuts 3 to move outward synchronously, that is, move away from each other, push the upper folding arm 4 and the lower folding arm 6 to gradually flatten, and the hinge seat 1 and the installation platform 9 steadily descend.

[0023] Embodiment 2:

[0024] An automatic lifting device includes a hinge seat 1, a transmission screw 2, a connecting base 5 and an outer frame 7. The transmission screw 2 is provided with two threaded sections of equal length, the threaded directions of the two threaded sections are opposite, and a transmission nut 3 is provided on each of the two threaded sections. The transmission nut 3 is connected to the threaded sections by threads, and guide pins 13 are fixed on both sides of the transmission nut 3. A pair of upper folding arms 4 are symmetrically connected to the bottom of the hinge seat 1, the top ends of the two upper folding arms 4 are hinged to the hinge seat 1, and the bottom ends of the two upper folding arms 4 are hinged to the guide pins 13 of the two transmission nuts 3 one by one. The connecting base 5 and the hinge seat 1 are symmetrically located on both sides of the transmission screw 2, and the connecting base 5 is connected to the transmission nut 3 through the lower folding arm 6, and the two ends of the lower folding arm 6 are respectively hinged to the guide pins 13 on the connecting base 5 and the transmission nut 3. The two upper folding arms 4 and the two lower folding arms 6 are arranged in a rhombus. The outer frame 7 is in the shape of a rectangular parallelepiped. The outer frame 7 has a cavity that passes through the top and bottom surfaces. The transmission screw 2 and the transmission nut 3 are located in the cavity. Guide grooves 8 are provided on both sides of the outer frame 7. The transmission nut 3 is slidably connected to the guide grooves 8 through guide pins 13. The upper folding arm 4 and the lower folding arm 6 are both double-body structures. Each upper folding arm 4 and each lower folding arm 6 include two parallel rods. The two rods in each upper folding arm 4 are located on both sides of the hinge seat 1 and the transmission nut 3, respectively. The two rods in each lower folding arm 6 are located on both sides of the connecting base 5 and the transmission nut 3, respectively. The hinge seat 1 is connected with a mounting platform 9. The end of the transmission screw 2 is connected with a driving mechanism, which includes a motor 10 and a coupling. A motor mounting interface is provided on one end surface of the outer frame 7. The motor 10 is mounted on the motor mounting interface. The motor 10 is coaxial with the transmission screw 2 and is located on the axial extension line of the outer frame 7. The output end of the motor 10 is connected to the transmission screw 2 through a coupling. The automatic lifting device is installed in an electric vehicle 4S shop or an electric vehicle replacement station for replacing batteries, and the connecting base 5 is fixed on the ground or table of the maintenance station as the height measurement base point of the automatic lifting device. The motor 10 is controlled by a button.

[0025] When the automatic lifting device is working, the torque output by the motor 10 is transmitted to the transmission screw 2 through the bevel gear set, driving the transmission screw 2 to rotate. Since the guide pin on the transmission nut 3 is connected in the guide groove 8, the transmission nut 3 will not rotate with the transmission screw 2. The transmission nut 3 and the transmission screw 2 rotate relative to each other. The thread engagement between the transmission nut 3 and the transmission screw 2 converts the relative rotation between the two into relative axial motion. Finally, the transmission screw 2 drives the two transmission nuts 3 to move inward synchronously, that is, approach each other, push the upper folding arm 4 and the lower folding arm 6 to gradually stand up, and the top hinge seat 1 rises steadily. On the contrary, when the motor 10 drives the transmission screw 2 to rotate in the opposite direction, the transmission screw 2 drives the two transmission nuts 3 to move outward synchronously, that is, move away from each other, push the upper folding arm 4 and the lower folding arm 6 to gradually flatten, and the hinge seat 1 and the installation platform 9 steadily descend.

[0026] Embodiment 3:

[0027] An automatic lifting device includes a hinge seat 1, a transmission screw 2 and an outer frame 7. The transmission screw 2 is provided with two threaded sections of equal length, and the threaded directions of the two threaded sections are opposite. A transmission nut 3 is provided on each of the two threaded sections, and the transmission nut 3 is connected to the threaded sections by threads. Guide pins 13 are fixed on both sides of the transmission nut 3. A pair of upper folding arms 4 are symmetrically connected to the bottom of the hinge seat 1. The top ends of the two upper folding arms 4 are hinged to the hinge seat 1, and the bottom ends of the two upper folding arms 4 are hinged to the guide pins 13 of the two transmission nuts 3 one by one. In this embodiment, a connecting base 5 and a lower folding arm 6 are not provided. The outer frame 7 is in the shape of a rectangular parallelepiped, and the outer frame 7 has a cavity that passes through the top and bottom surfaces. The transmission screw 2 and the transmission nut 3 are located in the cavity. Guide grooves 8 are provided on both sides of the outer frame 7, and the transmission nut 3 is slidably connected to the guide grooves 8 through guide pins. The upper folding arm 4 is a double-body structure, each upper folding arm 4 includes two parallel rods, and the two rods in each upper folding arm 4 are located on both sides of the hinge seat 1 and the transmission nut 3 respectively. The hinge seat 1 is connected with a mounting platform 9. The end of the transmission screw 2 is connected with a driving mechanism, which includes a motor 10 and a bevel gear set. The bevel gear set includes an active bevel gear 11 and a driven bevel gear 12. A motor mounting interface is provided at the top of one end of the outer frame 7. The motor 10 is mounted on the motor mounting interface. The motor 10 is perpendicular to the transmission screw 2. The active bevel gear 11 is keyed to the output end of the motor 10, and the driven bevel gear 12 is keyed to the end of the transmission screw 2. The active bevel gear 11 is meshed with the driven bevel gear 12, so that the output end of the motor 10 is connected to the transmission screw 2. The automatic jacking device is arranged on the loading station on the production line, and the outer frame 7 is fixed on the table of the production line as the height measurement base point of the automatic jacking device. The motor 10 is controlled by the PLC of the production line.

[0028] When the automatic lifting device is working, the torque output by the motor 10 is transmitted to the transmission screw 2 through the bevel gear set, driving the transmission screw 2 to rotate. Since the guide pin on the transmission nut 3 is connected to the guide groove 8, the transmission nut 3 will not rotate with the transmission screw 2. The transmission nut 3 and the transmission screw 2 rotate relative to each other. The thread engagement between the transmission nut 3 and the transmission screw 2 converts the relative rotation between the two into relative axial motion. Finally, the transmission screw 2 drives the two transmission nuts 3 to move inward synchronously, that is, approach each other, push the upper folding arm 4 to gradually stand up, and the top hinge seat 1 rises steadily. On the contrary, when the motor 10 drives the transmission screw 2 to rotate in the opposite direction, the transmission screw 2 drives the two transmission nuts 3 to move outward synchronously, that is, move away from each other, push the upper folding arm 4 to gradually flatten, and the hinge seat 1 and the installation platform 9 steadily descend.

[0029] Embodiment 4:

[0030] An automatic lifting device includes a hinge seat 1, a transmission screw 2, a connecting base 5 and a support plate. The two ends of the top surface of the support plate are provided with bearing seats, and the two ends of the transmission screw are installed on the bearing seats. The transmission screw 2 is provided with two threaded sections of equal length, and the threaded directions of the two threaded sections are opposite. A transmission nut 3 is provided on each of the two threaded sections. The transmission nut 3 is connected to the threaded section by threads, and pins are fixed on both sides of the transmission nut 3. The bottom surface of the transmission nut 3 is in contact with the support plate, and the two ends of the support plate are respectively slidably connected to two vertical guide rails. A pair of upper folding arms 4 are symmetrically connected to the bottom of the hinge seat 1. The top ends of the two upper folding arms 4 are jointly hinged on the hinge seat 1, and the bottom ends of the two upper folding arms 4 are correspondingly hinged on the pins of the two transmission nuts 3. The connecting base 5 and the hinge seat 1 are symmetrically located on both sides of the transmission screw 2. The connecting base 5 is connected to the transmission nut 3 through a lower folding arm 6. The two ends of the lower folding arm 6 are respectively hinged to the pins on the connecting base 5 and the transmission nut 3. The two upper folding arms 4 and the two lower folding arms 6 are arranged in a rhombus. The upper folding arm 4 and the lower folding arm 6 are both double-body structures. Each upper folding arm 4 and each lower folding arm 6 include two parallel rods. The two rods in each upper folding arm 4 are located on both sides of the hinge seat 1 and the transmission nut 3, respectively. The two rods in each lower folding arm 6 are located on both sides of the connecting base 5 and the transmission nut 3, respectively. The hinge seat 1 is connected with a mounting platform 9. The end of the transmission screw 2 is connected with a driving mechanism, which includes a motor 10 and a bevel gear set. The bevel gear set includes a driving bevel gear 11 and a driven bevel gear 12. A motor mounting seat is provided at one end of the support plate, and the motor 10 is connected to the motor mounting seat. The motor 10 is perpendicular to the transmission screw 2, the driving bevel gear 11 is key-connected to the output end of the motor 10, and the driven bevel gear 12 is key-connected to the end of the transmission screw 2. The driving bevel gear 11 is meshed with the driven bevel gear 12, so that the output end of the motor 10 is transmission-connected to the transmission screw 2. The automatic lifting device is arranged on the loading station of the production line, and the connecting base 5 and the vertical guide rail are fixed on the table of the production line as the height measurement base point of the automatic lifting device. The motor 10 is controlled by the PLC of the production line.

[0031] The difference from Example 1 is that this embodiment does not have an outer frame 7 and a guide pin 13, but is replaced by a support plate, and the support plate is constrained by the vertical guide rail to remain horizontal, and the transmission nut 3 is close to the support plate, thereby preventing the transmission nut 3 from rotating with the transmission screw 2.

Claims

1. An automatic lifting device, characterized in that: The invention comprises a hinge seat (1) and a transmission screw (2), wherein the transmission screw (2) is provided with two threaded sections of equal length, the threaded sections of the two threaded sections have opposite threaded directions, each of the two threaded sections is provided with a transmission nut (3), the transmission nut (3) is connected to the threaded section via threads, an upper folding arm (4) is symmetrically connected to the bottom of the hinge seat (1), the top end of the upper folding arm (4) is hinged to the hinge seat (1), the bottom end of the upper folding arm (4) is hinged to the transmission nut (3), and the end of the transmission screw (2) is connected to a driving mechanism.

2. The automatic lifting device according to claim 1 is characterized in that: The device also comprises a connecting base (5), wherein the connecting base (5) and the hinge base (1) are symmetrically located on both sides of the transmission screw (2), the connecting base (5) and the transmission nut (3) are connected via a lower folding arm (6), and the two ends of the lower folding arm (6) are respectively hinged to the connecting base (5) and the transmission nut (3).

3. The automatic lifting device according to claim 1 is characterized in that: It also includes an outer frame (7), a transmission screw (2) is located inside the outer frame (7), guide grooves (8) are provided on both sides of the outer frame (7), and a transmission nut (3) is slidably connected to the guide grooves (8) via guide pins.

4. The automatic lifting device according to claim 2 is characterized in that: The upper folding arm (4) and the lower folding arm (6) are both double-body structures, and each upper folding arm (4) and each lower folding arm (6) comprises two parallel rods.

5. The automatic lifting device according to claim 2 is characterized in that: The hinge seat (1) is connected to a mounting platform (9).

6. The automatic lifting device according to any one of claims 1 to 5, characterized in that: The driving mechanism comprises a motor (10), and an output end of the motor (10) is drivingly connected to a driving screw (2).

7. The automatic lifting device according to claim 6 is characterized in that: The motor (10) is perpendicular to the transmission screw (2), and the output end of the motor (10) is connected to the transmission screw (2) via a bevel gear set.

8. The automatic lifting device according to claim 6 is characterized in that: The motor (10) is coaxial with the transmission screw (2), and the output end of the motor (10) is connected to the transmission screw (2) via a coupling.

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