Lifting platform locking mechanism

Abstract

The utility model discloses a lifting platform locking mechanism which comprises a base, a plurality of sets of connecting rods are arranged on the base, a lifting platform is arranged on the connecting rods, a first fixing seat is fixedly installed on the base, two sets of sliding grooves are formed in the base, and sliding seats are installed in the two sets of sliding grooves in a sliding mode. First hinge seats are fixedly connected to the sliding seats, locking rods are fixedly connected to one sides of the two first hinge seats, mounting grooves are formed in the two ends of each locking rod, clamping rods are slidably mounted in the mounting grooves, and reset springs are fixedly connected to one ends of the clamping rods. The end, away from the clamping rod, of the reset spring is fixedly mounted in the mounting groove. According to the lifting platform, the clamping rods are matched with the clamping grooves to limit the locking rods between the two sets of locking blocks, so that descending of the lifting platform is limited, the safety risk of constructors during high-altitude operation is reduced, and damage to equipment and casualties caused by falling of the lifting platform from a building are avoided.

Description

Technical Field

[0001] The utility model relates to the field of lifting platform equipment, in particular to a locking mechanism of a lifting platform. Background Art

[0002] A lifting platform is a lifting machinery for transporting people or objects vertically. It also refers to equipment for vertical transportation in logistics systems such as factories and automatic warehouses. The lifting platform is often also equipped with various planar conveying equipment as a connecting device for conveyor lines at different heights.

[0003] Scissor lifts are a common type of lifts with compact structure and simple operation. They are widely used in equipment maintenance, indoor and outdoor machinery installation at stations, docks, bridges, halls, and factories, equipment maintenance, and building maintenance. In addition, scissor lifts are also commonly used in the logistics industry, production lines, lifting and loading and unloading of goods between basements and floors, as well as lifting stages and lifting operating tables. However, during the lifting process, the platform is susceptible to shaking or accidental movement due to external forces (such as wind and vibration), which increases the safety risks of construction workers working at high altitudes. Moreover, after the lifting platform loses power, the platform falls rapidly due to gravity, causing damage to equipment and casualties, posing a safety hazard. Utility Model Content

[0004] Aiming at the technical problems that the existing lifting platform is easily shaken or accidentally moved by external force during the lifting process, and the platform falls down after losing power, which may cause damage to equipment and casualties, the utility model provides a locking mechanism for the lifting platform.

[0005] The technical solution adopted by the utility model is: it includes a base, a plurality of groups of connecting rods are arranged on the base, a lifting platform is arranged on the connecting rods, a first fixed seat is fixedly installed on the base, two groups of sliding grooves are opened on the base, sliding seats are slidably installed in the two groups of sliding grooves, the sliding seats are fixedly connected to the first hinged seat, one side of the two groups of first hinged seats is fixedly connected with a locking rod, both ends of the locking rod are opened with a mounting groove, a card rod is slidably installed in the mounting groove, one end of the card rod is fixedly connected with a return spring, and the end of the return spring away from the card rod is fixedly installed in the mounting groove, two groups of locking blocks are fixedly installed on the base, a plurality of groups of card grooves are opened on the locking block, the card grooves are adapted to the card rods, and a driving mechanism is arranged on the base.

[0006] Furthermore, a guide hole is formed at one end of the clamping rod, a guide rod is slidably mounted in the guide hole, the guide rod is fixedly mounted in the mounting groove, and the return spring is sleeved on the outside of the guide rod.

[0007] By adopting the above technical solution, the stability of the clamping rod when moving in the installation groove is improved.

[0008] Furthermore, a push plate is slidably installed in the installation groove, and the bottom of the push plate is fixedly connected to the clamping rod.

[0009] By adopting the above technical solution, the push plate can unlock the lifting platform.

[0010] Furthermore, the locking rod is fixedly connected to a mounting plate, a winding motor is fixedly mounted on the mounting plate, a rotating shaft is fixedly connected to the driving shaft of the winding motor, the rotating shaft is rotatably mounted on the locking rod, two groups of ropes are wound on the circumferential surface of the rotating shaft, and one end of the two groups of ropes are respectively fixedly connected to the two groups of push plates.

[0011] By adopting the above technical solution, it is more convenient to unlock the lifting platform.

[0012] Furthermore, the driving mechanism includes two sets of driving motors fixedly installed on one side of the base and a screw rod rotatably installed in the slide groove, the driving shaft of the driving motor is coaxially fixedly connected to the screw rod, and the screw rod is threadedly connected to the slide seat.

[0013] By adopting the above technical solution, the driving mechanism can drive the lifting platform to rise and fall.

[0014] Furthermore, a limiting groove is provided on the side wall of the slide groove, a limiting block is slidably installed in the limiting groove, and the limiting block is fixedly connected to the side surface of the slide seat.

[0015] By adopting the above technical solution, the stability of the lifting process is improved.

[0016] Furthermore, one end of a group of connecting rods is rotatably connected to the first fixed seat, one end of a group of connecting rods is rotatably connected to the first hinged seat, a second fixed seat is fixedly installed on the bottom of the lifting platform, the second fixed seat is rotatably connected to the group of connecting rods, a second hinged seat is slidably installed on the bottom of the lifting platform, the second hinged seat is rotatably connected to the group of connecting rods, and adjacent connecting rods are rotatably connected.

[0017] By adopting the above technical solution, the expansion and folding of a plurality of groups of connecting rods drive the lifting platform to rise and fall.

[0018] Furthermore, four sets of universal wheels are fixedly installed on the bottom of the base, and the four sets of universal wheels are evenly distributed around the bottom of the base. A push handle is fixedly installed on one side of the base.

[0019] Through the above technical solution, the convenience of using the lifting platform is improved.

[0020] The beneficial effects of the utility model are as follows: through the first articulated seat cooperating with the locking rod, the clamping rod, the return spring and the locking block, during the lifting process of the lifting platform, the locking rod will not hinder the movement of the lifting platform; when the device is subjected to external force or loses power, the clamping rod cooperates with the clamping groove to limit the locking rod between the two sets of locking blocks, preventing the first articulated seat from moving in the direction close to the driving motor, thereby limiting the descent of the lifting platform, reducing the safety risks of construction personnel during high-altitude operations, and avoiding damage to equipment and casualties caused by the lifting platform falling from the building;

[0021] The mounting plate is matched with the winding motor, the rotating shaft, the rope body and the push plate. The winding motor drives the rotating shaft to rotate. The rotating shaft rotates to wind up the two sets of rope bodies on the rotating shaft. The rope body pulls the push plate to move. The push plate drives the clamping rod to move out of the clamping slot, thereby releasing the locking effect of the locking rod on the lifting platform, so that the lifting platform can be smoothly lowered. The winding motor can easily contact the locking effect of the locking rod on the lifting platform, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the base in the utility model;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the base in the utility model;

[0025] Figure 4 It is a schematic diagram of the cross-sectional structure of the locking rod and the locking block in the utility model;

[0026] Figure 5 It is a structural schematic diagram of the locking rod and the locking block in the utility model;

[0027] Figure 6 It is a structural schematic diagram of the lifting platform in the utility model.

[0028] The numbers in the figure are: 1. base; 2. first fixed seat; 3. slide groove; 4. slide seat; 5. first hinge seat; 6. connecting rod; 7. second fixed seat; 8. second hinge seat; 9. lifting platform; 10. locking rod; 11. mounting groove; 12. clamping rod; 13. locking block; 14. clamping groove; 15. reset spring; 16. guide hole; 17. guide rod; 18. push plate; 19. mounting plate; 20. winding motor; 21. rotating shaft; 22. rope body; 23. screw rod; 24. driving motor; 25. limit groove; 26. limit block; 27. universal wheel; 28. push handle. DETAILED DESCRIPTION

[0029] In the description of the present invention, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The following is combined with Figure 1-6 The utility model is further described.

[0032] In order to solve the problems existing in the background technology, the present application proposes the following technical scheme: it includes a base 1, a plurality of groups of connecting rods 6 are arranged on the base 1, a lifting platform 9 is arranged on the connecting rods 6, a first fixed seat 2 is fixedly installed on the base 1, two groups of slide grooves 3 are opened on the base 1, slide seats 4 are slidably installed in the two groups of slide grooves 3, and first hinged seats 5 are fixedly connected to the slide seats 4, a locking rod 10 is fixedly connected to one side of the two groups of first hinged seats 5, mounting grooves 11 are opened at both ends of the locking rod 10, a card rod 12 is slidably installed in the mounting groove 11, a return spring 15 is fixedly connected to one end of the card rod 12, and the end of the return spring 15 away from the card rod 12 is fixedly installed in the mounting groove 11, two groups of locking blocks 13 are fixedly installed on the base 1, a plurality of groups of card grooves 14 are opened on the locking block 13, and the card groove 14 is adapted to the card rod 12, and a driving mechanism is arranged on the base 1.

[0033] The driving mechanism drives the two groups of slide seats 4 to move in the slide groove 3, the slide seat 4 drives the first articulated seat 5 to move, the first articulated seat 5 drives several groups of connecting rods 6 to unfold or fold, and the connecting rod 6 pushes the lifting platform 9 to move, so as to realize the rising and falling of the lifting platform 9. During the rising process of the lifting platform 9, the driving mechanism drives the two groups of first articulated seats 5 to move right, the two groups of first articulated seats 5 drive the locking rod 10 to move right, and the locking rod 10 drives the two groups of clamping rods 12 to move right, one end of the clamping rod 12 contacts with the locking block 13, and the end of the clamping rod 12 that contacts with the locking block 13 is in an arc shape. The locking block 13 pushes the clamping rod 12 to move into the installation groove 11, and the clamping rod 12 compresses and deforms the reset spring 15. When the clamping rod 12 moves When it moves to the position of the slot 14, the compressed return spring 15 pushes the locking rod 12 into the slot 14 to restore it to its initial state. When moving to the right, the locking block 13 will not hinder the movement of the locking rod 10. When the device is subjected to external force or loses power, the lifting platform 9 tends to fall downward due to gravity. The locking rod 12 cooperates with the slot 14 to limit the locking rod 10 between the two groups of locking blocks 13, thereby preventing the locking rod 10 from moving to the left. The locking rod 10 prevents the two groups of first articulated seats 5 from moving, thereby locking the lifting platform 9, making the lifting platform have an anti-falling effect, reducing the safety risks of construction personnel during high-altitude operations, avoiding damage to equipment and casualties caused by the fall of the lifting platform 9, and eliminating potential safety hazards.

[0034] It is further explained that a guide hole 16 is formed at one end of the clamping rod 12 , a guide rod 17 is slidably installed in the guide hole 16 , the guide rod 17 is fixedly installed in the installation groove 11 , and the return spring 15 is sleeved on the outside of the guide rod 17 .

[0035] The guide rod 17 cooperates with the guide hole 16 to guide and limit the movement of the card rod 12, thereby improving the stability of the card rod 12 when moving in the installation groove 11. At the same time, the guide rod 17 also limits the reset spring 15, thereby preventing the reset spring 15 from deflecting during the deformation process and improving the stability of the reset spring 15 during use.

[0036] It is further explained that a push plate 18 is slidably installed in the installation groove 11 , and the bottom of the push plate 18 is fixedly connected to the clamping rod 12 .

[0037] The push plate 18 can push the clamping rod 12 to move one end of the clamping rod 12 from the clamping slot 14, thereby releasing the restriction of the locking block 13 on the locking rod 10, so that the two groups of first hinge seats 5 can move freely to the left, ensuring the smooth descent of the lifting platform 9.

[0038] It is further explained that a mounting plate 19 is fixedly connected to the locking rod 10, a winding motor 20 is fixedly mounted on the mounting plate 19, a rotating shaft 21 is fixedly connected to the driving shaft of the winding motor 20, the rotating shaft 21 is rotatably mounted on the locking rod 10, two groups of ropes 22 are wound on the circumferential surface of the rotating shaft 21, and one end of the two groups of ropes 22 are respectively fixedly connected to the two groups of push plates 18.

[0039] The mounting plate 19 provides installation conditions for the winding motor 20. The winding motor 20 drives the rotating shaft 21 to rotate. The rotating shaft 21 rotates to wind up the two sets of ropes 22 on the rotating shaft 21. The ropes 22 pull the push plate 18 to move. The push plate 18 drives the locking rod 12 to move out of the locking slot 14. The winding motor 20 can easily contact the locking rod 10 to lock the lifting platform 9, thereby improving the practicality of the device.

[0040] It is further explained that the driving mechanism includes two sets of driving motors 24 fixedly installed on one side of the base 1 and a screw rod 23 rotatably installed in the slide groove 3. The driving shaft of the driving motor 24 is coaxially fixedly connected to the screw rod 23, and the screw rod 23 is threadedly connected to the slide seat 4.

[0041] The driving motor 24 drives the screw rod 23 to rotate, and the screw rod 23 pushes the slide 4 to move. The moving direction of the slide 4 is controlled by the forward and reverse rotation of the driving motor 24, so as to realize the control of the lifting and lowering of the lifting platform 9 and improve the convenience of using the device.

[0042] It is further explained that a limiting groove 25 is provided on the side wall of the slide groove 3 , a limiting block 26 is slidably installed in the limiting groove 25 , and the limiting block 26 is fixedly connected to the side surface of the slide seat 4 .

[0043] The limit block 26 cooperates with the limit groove 25 to guide and limit the movement of the slide 4, preventing the slide 4 from flipping over when the screw rod 23 rotates, improving the stability of the slide 4 moving in the slide groove 3, and thus improving the smoothness of the lifting and lowering process of the lifting platform 9.

[0044] It is further explained that one end of a group of connecting rods 6 is rotatably connected to the first fixed seat 2, one end of a group of connecting rods 6 is rotatably connected to the first articulated seat 5, a second fixed seat 7 is fixedly installed on the bottom of the lifting platform 9, the second fixed seat 7 is rotatably connected to the group of connecting rods 6, a second articulated seat 8 is slidably installed on the bottom of the lifting platform 9, the second articulated seat 8 is rotatably connected to the group of connecting rods 6, and adjacent connecting rods 6 are rotatably connected.

[0045] One end of the bottom group of connecting rods 6 among the several groups of connecting rods 6 is rotatably connected to the first articulated seat 5, one end of another bottom group of connecting rods 6 is rotatably connected to the first fixed seat 2, one end of the top group of connecting rods 6 among the several groups of connecting rods 6 is rotatably connected to the second fixed seat 7, one end of another top group of connecting rods 6 is rotatably connected to the second articulated seat 8, and the connecting rods 6 adjacent to the left and right and front and back are all rotatably connected. When the first articulated seat 5 moves to the right, the lifting platforms 9 between the several groups of connecting rods 6 are unfolded and lifted upward. When the first articulated seat 5 moves to the left, the lifting platforms 9 between the several groups of connecting rods 6 are folded and lowered.

[0046] It is further explained that four sets of universal wheels 27 are fixedly installed on the bottom of the base 1 , and the four sets of universal wheels 27 are evenly distributed around the bottom of the base 1 . A push handle 28 is fixedly installed on one side of the base 1 .

[0047] The universal wheel 27 cooperates with the push handle 28 to facilitate moving the base 1 to a suitable position. The locking device on the universal wheel 27 can fix the base 1 at a specified position, thereby improving the convenience of using the lifting platform.

[0048] Specific reference is made to the following operation: the base 1 is moved to a suitable position through the universal wheel 27 and the push handle 28, the driving motor 24 drives the screw rod 23 to rotate, the screw rod 23 pushes the slide 4 to move right, the slide 4 drives the first hinge seat 5 to move right, the first hinge seat 5 pushes the connecting rod 6 to move right, and several groups of connecting rods 6 are unfolded to drive the lifting platform 9 to move upward. During the rising process of the lifting platform 9, the two groups of first hinge seats 5 drive the locking rod 10 to move right, the locking rod 10 drives the two groups of clamping rods 12 to move right, and one end of the clamping rod 12 contacts the locking block 13. The locking block 13 pushes the clamping rod 12 to move into the installation groove 11, and the clamping rod 12 compresses and deforms the reset spring 15. After the lifting platform 9 is lifted to a suitable height, the reset spring 15 moves the clamping rod 12 to the clamping groove 14. When the device is subjected to external force or loses power, the clamping rod 12 cooperates with the clamping groove 14 to limit the locking rod 10 between the two groups of locking blocks 13, thereby preventing the locking rod 10 from moving to the left. The locking rod 10 prevents the two groups of first articulated seats 5 from moving, thereby locking the lifting platform 9, so that the lifting platform has an anti-fall effect, reducing the safety risks of construction personnel when working at high altitudes.

[0049] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0050] Although the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The locking mechanism of the lifting platform is characterized by: The invention comprises a base (1), wherein the base (1) is provided with a plurality of connecting rods (6), wherein the connecting rods (6) are provided with a lifting platform (9), wherein a first fixed seat (2) is fixedly mounted on the base (1), wherein two sets of slide grooves (3) are provided on the base (1), wherein slide seats (4) are slidably mounted in the two sets of slide grooves (3), wherein the slide seats (4) are fixedly connected with a first hinge seat (5), wherein one side of the two sets of first hinge seats (5) is fixedly connected with a locking rod (10), and both ends of the locking rod (10) are A mounting groove (11) is provided, a clamping rod (12) is slidably installed in the mounting groove (11), one end of the clamping rod (12) is fixedly connected to a return spring (15), and one end of the return spring (15) away from the clamping rod (12) is fixedly installed in the mounting groove (11), two groups of locking blocks (13) are fixedly installed on the base (1), and a plurality of groups of clamping grooves (14) are provided on the locking blocks (13), and the clamping grooves (14) are adapted to the clamping rod (12), and a driving mechanism is provided on the base (1).

2. The locking mechanism of the lifting platform according to claim 1, characterized in that: A guide hole (16) is formed at one end of the clamping rod (12), a guide rod (17) is slidably mounted in the guide hole (16), the guide rod (17) is fixedly mounted in the mounting groove (11), and the return spring (15) is sleeved on the outside of the guide rod (17).

3. The locking mechanism of the lifting platform according to claim 2, characterized in that: A push plate (18) is slidably mounted in the mounting groove (11), and the bottom of the push plate (18) is fixedly connected to the clamping rod (12).

4. The locking mechanism of the lifting platform according to claim 3, characterized in that: The locking rod (10) is fixedly connected to a mounting plate (19), a winding motor (20) is fixedly mounted on the mounting plate (19), a rotating shaft (21) is fixedly connected to the driving shaft of the winding motor (20), the rotating shaft (21) is rotatably mounted on the locking rod (10), two groups of rope bodies (22) are wound around the circumferential surface of the rotating shaft (21), and one end of the two groups of rope bodies (22) are respectively fixedly connected to the two groups of push plates (18).

5. The locking mechanism of the lifting platform according to claim 4, characterized in that: The driving mechanism comprises two sets of driving motors (24) fixedly mounted on one side of the base (1) and a screw rod (23) rotatably mounted in the slide groove (3); the driving shaft of the driving motor (24) is coaxially fixedly connected to the screw rod (23); and the screw rod (23) is threadedly connected to the slide seat (4).

6. The locking mechanism of the lifting platform according to claim 5, characterized in that: A limiting groove (25) is provided on the side wall of the slide groove (3), a limiting block (26) is slidably installed in the limiting groove (25), and the limiting block (26) is fixedly connected to the side of the slide seat (4).

7. The locking mechanism of the lifting platform according to claim 6, characterized in that: One end of a group of the connecting rods (6) is rotatably connected to the first fixed seat (2), one end of a group of the connecting rods (6) is rotatably connected to the first hinge seat (5), a second fixed seat (7) is fixedly installed at the bottom of the lifting platform (9), the second fixed seat (7) is rotatably connected to the group of the connecting rods (6), a second hinge seat (8) is slidably installed at the bottom of the lifting platform (9), the second hinge seat (8) is rotatably connected to the group of the connecting rods (6), and adjacent connecting rods (6) are rotatably connected to each other.

8. The locking mechanism of the lifting platform according to claim 7, characterized in that: Four sets of universal wheels (27) are fixedly mounted on the bottom of the base (1), and the four sets of universal wheels (27) are evenly distributed around the bottom of the base (1). A push handle (28) is fixedly mounted on one side of the base (1).

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