Speed multiplication line chain transmission lifting mechanism

Abstract

The utility model discloses a speed multiplication line chain transmission lifting mechanism which comprises an installation frame and a lifting assembly. A moving assembly is mounted in the mounting frame, and a brake assembly and a supporting assembly are mounted on the rear side in the mounting frame. The lifting assembly comprises first fixing plates, a rotating shaft, a motor, a chain wheel ring and a chain, the two corresponding first fixing plates are fixed to the upper side of the mounting frame, the rotating shaft is rotationally connected between the two first fixing plates, the motor is mounted on the left side of the first fixing plate on the left side, and an output shaft of the motor is fixed to the left end of the rotating shaft; two corresponding chain wheel rings are fixed to the circumferential face of the rotating shaft, the surfaces of the chain wheel rings are sleeved with chains, the lower ends of the front ends of the two chains are connected with the moving assembly, and the input end of the motor is electrically connected with the output end of an external PLC. When the driving chain wheel loses power, emergency braking can be achieved, and falling is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying equipment, in particular to a double-speed linear chain transmission lifting mechanism. Background Art

[0002] Most heavy-load lifting mechanisms currently available on the market use hydraulic or electric screw systems. Electric screw-based lifting mechanisms have the following disadvantages: complex commissioning and installation, extensive circuit control, high costs, a high probability of repair failures, difficulty in ongoing maintenance, and large space requirements. Hydraulic lifts also have the following disadvantages: large vertical space requirements, long cylinder strokes, and high costs. To avoid these issues, chain drives are often used for lifting.

[0003] Chain-driven lifts offer advantages such as precise transmission ratios, high load-bearing capacity, and a simple, easy-to-maintain structure. When transporting goods perpendicular to the ground, a brake is typically incorporated into the chain-driven transport structure to prevent the transported goods from suddenly falling if the driving sprocket loses power. However, the brakes commonly used in chain-driven transports under heavy loads typically utilize a disc brake. Disc brakes utilize friction generated by the caliper squeezing the disc, which requires a long braking time and distance, making them difficult to meet emergency braking requirements in some scenarios. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a double-speed linear chain transmission lifting mechanism, which can brake urgently when the active sprocket loses power to avoid falling, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: a double-speed linear chain transmission lifting mechanism, comprising a mounting frame and a lifting assembly;

[0006] Mounting frame: a moving assembly is installed inside, and a brake assembly and a support assembly are installed on the rear side of the mounting frame;

[0007] Lifting assembly: includes a fixed plate 1, a rotating shaft, a motor, a sprocket ring and a chain. Two corresponding fixed plates 1 are fixed on the upper side of the mounting frame. A rotating shaft is rotatably connected between the two fixed plates 1. A motor is installed on the left side of the left fixed plate 1. The output shaft of the motor is fixed to the left end of the rotating shaft. Two corresponding sprocket rings are fixed on the circumferential surface of the rotating shaft. A chain is sleeved on the surface of the sprocket ring. The lower ends of the front ends of the two chains are connected to the moving assembly. The input end of the motor is electrically connected to the output end of the external PLC controller. The moving plate is driven to rise and fall by setting the lifting assembly.

[0008] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0009] Furthermore, it also includes an extrusion component, which includes a T-shaped block and a triangular block. The T-shaped block is fixed on the rear side of the counterweight block, and two corresponding triangular blocks are fixed on the left and right sides of the T-shaped block. The oblique block is extruded by setting the extrusion component.

[0010] Furthermore, the brake assembly includes a fixed frame, a connecting frame, a slide bar, an oblique block, a spring, an iron bar and an electromagnet. Two corresponding fixed frames are fixed on the rear side of the interior of the mounting frame, and an evenly distributed connecting frame is fixed on the front side of the fixed frame. The interior of the connecting frame is slidably connected with a slide bar, and an oblique block is fixed on one side of the slide bar. A spring is sleeved on the side of the slide bar, one end of the spring is fixed on the side of the connecting frame, and the other end of the spring is fixed on the side of the oblique block. Two corresponding iron bars are fixed on the side of all the slide bars, and two corresponding electromagnets are installed on the left and right sides of the interior of the mounting frame. The electromagnets correspond to the iron bars, and the oblique blocks correspond to the corresponding triangular blocks. The input end of the electromagnet is electrically connected to the output end of the external PLC controller. By setting the brake assembly, the moving plate can be prevented from falling.

[0011] Furthermore, the support assembly includes an electric telescopic rod, a mounting plate and a pressure sensor. The electric telescopic rod is installed on the lower side of the mounting frame, the mounting plate is fixed on the telescopic arm of the electric telescopic rod, and the pressure sensor is installed on the upper side of the mounting plate. The pressure sensor is bidirectionally electrically connected to an external PLC controller, and the input end of the electric telescopic rod is electrically connected to the output end of the external PLC controller. The height of the pressure sensor is adjusted by setting the electric telescopic rod.

[0012] Furthermore, two corresponding guide wheels are rotatably connected to the left and right sides of the movable plate, and two corresponding guide grooves are provided on the front side of the mounting frame. The guide wheels are slidably connected to the inside of the guide grooves. By setting the guide grooves and guide wheels, the stability of the movable plate can be effectively guaranteed.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. By setting up a lifting assembly, objects can be placed on the top of the moving plate when in use. After placement, the motor is started to rotate the shaft to drive the two sprocket rings to rotate. The rotation of the two sprocket rings drives the two chains to move, thereby causing the counterweight block to move downward. The downward movement of the counterweight block causes the moving plate to move upward. The upward movement of the moving plate can drive the objects to be lifted and lowered;

[0015] 2. By setting a brake assembly, the counterweight block will cause the T-shaped block to move downward during the downward movement. The downward movement of the T-shaped block drives the two triangular blocks downward to squeeze the oblique block in contact with it, so that the oblique block in contact moves away from the two triangular blocks. When the sprocket ring loses power, the movable plate is driven downward by the weight of the object itself. The downward movement of the movable plate drives the counterweight block upward. The upward movement of the counterweight block drives the two triangular blocks upward to fit into the two adjacent triangular blocks. After fitting, the braking is completed, thereby preventing the object from falling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the extrusion assembly of the utility model;

[0018] Figure 3 This is a schematic diagram of the brake assembly structure of the utility model.

[0019] In the figure: 1 mounting frame, 2 lifting assembly, 21 fixed plate 1, 22 rotating shaft, 23 motor, 24 sprocket ring, 25 chain, 3 moving assembly, 31 fixed plate 2, 32 fixed rod, 33 moving bar, 34 moving plate, 35 counterweight, 4 extrusion assembly, 41 T-shaped block, 42 ​​triangular block, 5 brake assembly, 51 fixed frame, 52 connecting frame, 53 slide bar, 54 oblique block, 55 spring, 56 iron bar, 57 electromagnet, 6 support assembly, 61 electric telescopic rod, 62 mounting plate, 63 pressure sensor, 7 guide wheel, 8 guide groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-3This embodiment provides a technical solution: a double-speed linear chain transmission lifting mechanism, including a mounting frame 1 and a lifting assembly 2, a moving assembly 3 is installed inside the mounting frame 1, and a brake assembly 5 and a support assembly 6 are installed on the rear side of the mounting frame 1.

[0022] Among them, the moving component 3 includes a fixed plate 2 31, a fixed rod 32, a moving bar 33, a moving plate 34 and a counterweight 35. The fixed plate 2 31 is fixed on the upper side of the interior of the mounting frame 1, and a moving bar 33 is provided inside the mounting frame 1. Two corresponding sliding holes are provided on the upper side of the moving bar 33, and the fixed rods 32 are slidably connected inside the sliding holes. The two fixed rods 32 are fixed to the lower side of the fixed plate 2 31, and the moving plate 34 is fixed on the front side of the moving bar 33. The lower ends of the front sides of the two chains 25 are fixed to the upper side of the moving plate 34, and the counterweight 35 is fixed to the lower ends of the rear sides of the two chains 25. Two corresponding guide grooves are provided on the left and right sides of the interior of the mounting frame 1, and the two ends of the counterweight 35 are slidably connected inside the two guide grooves.

[0023] The counterweight 35 further includes an extrusion assembly 4 , which includes a T-shaped block 41 and a triangular block 42 . The T-shaped block 41 is fixed to the rear side of the counterweight 35 , and two corresponding triangular blocks 42 are fixed to the left and right sides of the T-shaped block 41 .

[0024] Among them, the brake assembly 5 includes a fixed frame 51, a connecting frame 52, a slide 53, an oblique block 54, a spring 55, an iron bar 56 and an electromagnet 57. Two corresponding fixed frames 51 are fixed on the rear side of the inside of the mounting frame 1, and a uniformly distributed connecting frame 52 is fixed on the front side of the fixed frame 51. The interior of the connecting frame 52 is slidably connected with a slide 53, and an oblique block 54 is fixed on one side of the slide 53. A spring 55 is sleeved on the side of the slide 53, and one end of the spring 55 is fixed on the side of the connecting frame 52, and the other end of the spring 55 is fixed on the side of the oblique block 54. Two corresponding iron bars 56 are fixed on the sides of all the slides 53. Two corresponding electromagnets 57 are installed on the left and right sides of the inside of the mounting frame 1. The electromagnet 57 corresponds to the iron bar 56, and the oblique block 54 corresponds to the corresponding triangular block 42. The input end of the electromagnet 57 is electrically connected to the output end of the external PLC controller.

[0025] Among them, the support assembly 6 includes an electric telescopic rod 61, a mounting plate 62 and a pressure sensor 63. The electric telescopic rod 61 is installed on the lower side of the mounting frame 1, and the mounting plate 62 is fixed on the telescopic arm of the electric telescopic rod 61. The pressure sensor 63 is installed on the upper side of the mounting plate 62. The pressure sensor 63 is bidirectionally electrically connected to the external PLC controller. The input end of the electric telescopic rod 61 is electrically connected to the output end of the external PLC controller. The height of the pressure sensor 63 is adjusted by setting the electric telescopic rod 61.

[0026] Among them, the lifting component 2 includes a fixed plate 21, a rotating shaft 22, a motor 23, a sprocket ring 24 and a chain 25. Two corresponding fixed plates 21 are fixed on the upper side of the mounting frame 1. The rotating shaft 22 is rotatably connected between the two fixed plates 21. The left side of the left fixed plate 21 is installed with a motor 23. The output shaft of the motor 23 is fixed to the left end of the rotating shaft 22. Two corresponding sprocket rings 24 are fixed on the circumferential surface of the rotating shaft 22. The surface of the sprocket ring 24 is sleeved with a chain 25. The lower ends of the front ends of the two chains 25 are connected to the moving component 3. The input end of the motor 23 is electrically connected to the output end of the external PLC controller. The moving plate 34 is driven to rise and fall by setting the lifting component 2.

[0027] Among them: the left and right sides of the movable plate 34 are rotatably connected to two corresponding guide wheels 7, the front side of the mounting frame 1 is provided with two corresponding guide grooves 8, the guide wheels 7 are slidably connected to the inside of the guide grooves 8, and the stability of the movable plate 34 can be effectively guaranteed by setting the guide grooves 8 and the guide wheels 7.

[0028] The working principle of this utility model is as follows:

[0029] By setting up a lifting assembly, it is possible to place items on top of the moving plate 34 when in use. After placement, the motor 23 is started to rotate the rotating shaft 22 to drive the two sprocket rings 24 to rotate. The rotation of the two sprocket rings 24 drives the two chains 25 to move, thereby causing the counterweight block 35 to move downward. The counterweight block 35 moves downward to cause the moving plate 34 to move upward. The upward movement of the moving plate 34 can drive the items to be lifted and lowered. In the process of moving downward, the counterweight block 35 will cause the T-shaped block 41 to move downward. The downward movement of the T-shaped block 41 drives the two triangular blocks 42 to squeeze the oblique blocks 54 in contact with it downward, so that the oblique blocks 54 in contact with it are away from the two triangular blocks 42. When the sprocket ring 24 loses power, the moving plate 34 is driven downward by the action of its own weight. The moving plate 34 moves downward to drive the counterweight block 35 to move upward, and the counterweight block 35 moves upward to drive the two triangular blocks 42 to move downward. The corner block 42 moves upward and fits in with the two adjacent triangular blocks 42. After fitting, braking is completed to prevent items from falling. Before use, the electric telescopic rod 61 can be started to adjust the height of the pressure sensor 63 as needed. After adjustment, the movable plate 34 can be raised and lowered to a suitable height after contacting the pressure sensor 63 during the downward movement of the counterweight block 35. At this time, the external PLC controller will automatically control the two electromagnets 57 to work to adsorb the two iron bars 56. After adsorption, all the slides 53 can be moved. The movement of all the slides 53 can drive all the oblique blocks 54 away from the two triangular blocks 42. At the same time, the external PLC controller will also drive the motor 23 to rotate, so that the shaft 22 can rotate. The rotation of the shaft 22 can drive the chain 25 to rotate. The rotation of the chain 25 can make the movable plate 34 move downward, thereby driving the items downward.

[0030] It is worth noting that the external PLC controller disclosed in the above embodiment is specifically a Siemens S7-200, the motor 23 can be a 1LE0003 three-phase asynchronous motor, the electromagnet 57 can be a KK-P20 electromagnet, the electric telescopic rod 61 can be a TGC-A high-thrust electric telescopic rod, and the pressure sensor 63 can be a DP-101 pressure sensor. The external PLC controller controls the operation of the motor 23, the electromagnet 57 and the electric telescopic rod 61 using methods commonly used in the prior art.

[0031] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A double-speed linear chain transmission lifting mechanism, characterized by: It comprises a mounting frame (1) and a lifting assembly (2); A moving assembly (3) is installed inside the mounting frame (1), and a brake assembly (5) and a supporting assembly (6) are installed on the rear side of the mounting frame (1); The lifting assembly (2) comprises a fixed plate (21), a rotating shaft (22), a motor (23), a sprocket ring (24) and a chain (25). Two corresponding fixed plates (21) are fixed on the upper side of the mounting frame (1). The rotating shaft (22) is rotatably connected between the two fixed plates (21). The left side of the fixed plate (21) on the left side is equipped with a motor (23). The output shaft of the motor (23) is fixed to the left end of the rotating shaft (22). Two corresponding sprocket rings (24) are fixed on the circumferential surface of the rotating shaft (22). The surface of the sprocket ring (24) is sleeved with a chain (25). The lower ends of the front ends of the two chains (25) are connected to the moving assembly (3). The input end of the motor (23) is electrically connected to the output end of an external PLC controller.

2. The double-speed linear chain transmission lifting mechanism according to claim 1, characterized in that: The moving assembly (3) comprises a second fixed plate (31), a fixed rod (32), a moving bar (33), a moving plate (34) and a counterweight (35). The second fixed plate (31) is fixed on the upper side of the interior of the mounting frame (1). The interior of the mounting frame (1) is provided with a moving bar (33). Two corresponding sliding holes are provided on the upper side of the moving bar (33). The interior of the sliding hole is slidably connected with a fixed rod (32). Both fixed rods (32) are fixed to the lower side of the second fixed plate (31). The front side of the moving bar (33) is fixed with a moving plate (34). The lower ends of the front sides of the two chains (25) are fixed to the upper side of the moving plate (34). The lower ends of the rear sides of the two chains (25) are fixed with a counterweight (35). Two corresponding guide grooves are provided on the left and right sides of the interior of the mounting frame (1). The two ends of the counterweight (35) are slidably connected to the interior of the two guide grooves.

3. The double-speed linear chain transmission lifting mechanism according to claim 2, characterized in that: The invention also includes an extrusion assembly (4), the extrusion assembly (4) including a T-shaped block (41) and a triangular block (42), the T-shaped block (41) being fixed to the rear side of the counterweight block (35), and two corresponding triangular blocks (42) being fixed to the left and right sides of the T-shaped block (41).

4. The double-speed linear chain transmission lifting mechanism according to claim 3, characterized in that: The brake assembly (5) comprises a fixed frame (51), a connecting frame (52), a slide bar (53), an oblique block (54), a spring (55), an iron bar (56) and an electromagnet (57). Two corresponding fixed frames (51) are fixed on the rear side of the interior of the mounting frame (1). Evenly distributed connecting frames (52) are fixed on the front side of the fixed frame (51). The interior of the connecting frame (52) is slidably connected to a slide bar (53). An oblique block (54) is fixed on one side of the slide bar (53). A spring (55) is sleeved on the side of the slide bar (53). ), one end of the spring (55) is fixed on the side of the connecting frame (52), the other end of the spring (55) is fixed on the side of the oblique block (54), two corresponding iron bars (56) are fixed on the side of all the slide bars (53), two corresponding electromagnets (57) are installed on the left and right sides inside the mounting frame (1), the electromagnets (57) and the iron bars (56) correspond to each other, the oblique block (54) and its corresponding triangular block (42) correspond to each other, and the input end of the electromagnet (57) is electrically connected to the output end of the external PLC controller.

5. The double-speed linear chain transmission lifting mechanism according to claim 1, characterized in that: The support assembly (6) comprises an electric telescopic rod (61), a mounting plate (62) and a pressure sensor (63); the electric telescopic rod (61) is mounted on the lower side of the mounting frame (1); the mounting plate (62) is fixed on the telescopic arm of the electric telescopic rod (61); the pressure sensor (63) is mounted on the upper side of the mounting plate (62); the pressure sensor (63) is bidirectionally electrically connected to an external PLC controller; the input end of the electric telescopic rod (61) is electrically connected to the output end of the external PLC controller.

6. The double-speed linear chain transmission lifting mechanism according to claim 2, characterized in that: The left and right sides of the movable plate (34) are rotatably connected to two corresponding guide wheels (7), and the front side of the mounting frame (1) is provided with two corresponding guide grooves (8), and the guide wheels (7) are slidably connected inside the guide grooves (8).

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