Device that controls the lifting position of the scissor lift via an electric actuator.

Abstract

This utility model relates to a device for controlling the lifting position of a scissor fork using an electric push rod. It includes a base frame, a cylinder, an electric push rod, a driven connecting rod, a driving connecting rod, an upper support plate, an intermediate hinge point, a limiting hinge point, and a translation hinge point. The middle ends of the driven connecting rod and the driving connecting rod are connected via the intermediate hinge point. The top end of the driving connecting rod is connected to one end of the upper support plate, and the top end of the driven connecting rod is connected to the other end of the upper support plate via the limiting hinge point. The bottom end of the driven connecting rod is connected to the base frame, and the bottom end of the driving connecting rod is connected to the translation hinge point, which is connected to the cylinder. The electric push rod is mounted inside the base frame via a bracket and supports forward and backward movement. The cylinder is mounted on the base frame. This utility model's device for controlling the lifting position of a scissor fork using an electric push rod limits the extension length of the cylinder driving the scissor fork's lifting height, thereby precisely controlling the scissor fork's lifting height and allowing for automatic adjustment.

Description

Technical Field

[0001] This utility model relates to the field of pipe piles, and more particularly to the field of scissor lift devices, specifically a device that controls the lifting position of the scissor lift by using an electric push rod. Background Technology

[0002] The scissor lift height is driven by a cylinder, with multiple hard limit switches, making adjustment difficult and limiting the adjustment range. For multiple scissor lift units, manual adjustment is cumbersome. Alternatively, the scissor lift height can be controlled by a clamping cylinder (a standard cylinder plus a locking cylinder). However, the clamping cylinder cannot stably stop at a specific position. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device that controls the lifting position of a scissor fork via an electric push rod, which is simple in structure, easy to install, and has a wide range of applications.

[0004] To achieve the above objectives, the device of this utility model for controlling the lifting position of the scissor fork via an electric push rod is as follows:

[0005] This device for controlling the lifting position of a scissor fork via an electric push rod is characterized by comprising a base frame, a cylinder, an electric push rod, a driven connecting rod, a driving connecting rod, an upper support plate, an intermediate hinge point, a limiting hinge point, and a translation hinge point. The middle ends of the driven connecting rod and the driving connecting rod are connected via the intermediate hinge point. The top end of the driving connecting rod is connected to one end of the upper support plate, and the top end of the driven connecting rod is connected to the other end of the upper support plate via the limiting hinge point. The bottom end of the driven connecting rod is connected to the base frame, and the bottom end of the driving connecting rod is connected to the translation hinge point, which is connected to the cylinder. The electric push rod is mounted inside the base frame via a bracket and supports forward and backward movement. The cylinder is mounted on the base frame and supports forward and backward movement, driving the driving connecting rod to move and causing the upper support plate to lift up and down.

[0006] Preferably, the device further includes a cylinder connector and a stop block. The cylinder connector is installed at the tail end of the cylinder, and the stop block is installed at the head of the electric push rod. When the cylinder connector moves back and forth with the cylinder, it stops moving when it touches the stop block.

[0007] Preferably, the front and rear positions of the stop block can be automatically adjusted.

[0008] Preferably, the lifting scissor fork further includes a guide chain and sprockets. The two sprockets are mounted on the side of the upper support plate. The guide chain surrounds the two sprockets and rotates around them. The rib cage is placed on the upper support plate, and the top of the guide chain contacts the outer edge of the rib cage. When the rib cage moves on the upper support plate, the sprockets and guide chain move accordingly.

[0009] This invention utilizes a device that controls the lifting and lowering position of a scissor fork via an electric actuator. The electric actuator limits the extension length of the cylinder driving the scissor fork's lifting and lowering, thereby precisely controlling the lifting height of the scissor fork and allowing for automatic adjustment. When multiple units are operating, the adjustment position remains consistent. The electric actuator has a compact overall size, facilitating installation. Attached Figure Description

[0010] Figure 1 This is a structural diagram of the device for controlling the lifting and lowering position of a scissor fork via an electric push rod, according to this utility model.

[0011] Figure 2 This is a side view of the device of this utility model that controls the lifting position of the scissor fork via an electric push rod.

[0012] Figure 3 This is a schematic diagram of the vertical movement of the device of this utility model, which controls the lifting position of the scissor fork via an electric push rod.

[0013] Figure label:

[0014] 1 cylinder

[0015] 2. Scissor-fork lifting structure

[0016] 3 Electric linear actuator

[0017] 4. Guide Chain

[0018] 5 Cylinder connectors

[0019] 6 stops

[0020] 7. Sprockets

[0021] 8 Adjusting bolts

[0022] 9. Base frame

[0023] 11 Driven Link

[0024] 12 Active Linkages

[0025] 13. Upper support plate

[0026] 16 intermediate hinge points

[0027] 17 Limiting hinge points

[0028] 18 Translation hinge points Detailed Implementation

[0029] To more clearly describe the technical content of this utility model, the following description is provided in conjunction with specific embodiments.

[0030] This utility model discloses a device for controlling the lifting and lowering position of a scissor fork via an electric push rod. The device includes a base frame 9, a cylinder 1, an electric push rod 3, a driven connecting rod 11, a driving connecting rod 12, an upper support plate 13, an intermediate hinge point 16, a limiting hinge point 17, and a translation hinge point 18. The middle ends of the driven connecting rod 11 and the driving connecting rod 12 are connected via the intermediate hinge point 16. The top end of the driving connecting rod 12 is connected to one end of the upper support plate 13, and the top end of the driven connecting rod 11 is connected to the upper support plate 13. The other end is connected through the limiting hinge point 17. The bottom end of the driven connecting rod 11 is connected to the base frame 9. The bottom end of the driving connecting rod 12 is connected to the translation hinge point 18. The translation hinge point 18 is connected to the cylinder 1. The electric push rod 3 is installed inside the base frame 9 through the bracket. The electric push rod 3 supports forward and backward pushing. The cylinder 1 is installed on the base frame 9. The cylinder 1 supports forward and backward movement, drives the driving connecting rod 12 to move, and drives the upper support plate 13 to rise and fall.

[0031] In a preferred embodiment of the present invention, the device further includes a cylinder connector 5 and a stop block 6. The cylinder connector 5 is installed at the tail end of the cylinder 1, and the stop block 6 is installed at the head of the electric push rod 3. When the cylinder connector 5 moves back and forth with the cylinder 1, it stops moving when it touches the stop block 6.

[0032] In a preferred embodiment of this utility model, the front and rear positions of the stop block 6 are automatically adjustable.

[0033] In a preferred embodiment of this utility model, the lifting scissor fork 3 further includes a guide chain 4 and sprockets 7. The two sprockets 7 are mounted on the side of the upper support plate 13. The guide chain 4 surrounds the two sprockets 7 and rotates around the two sprockets 7. The rib cage is placed on the upper support plate 13, and the top of the guide chain 4 contacts the outer edge of the rib cage. When the rib cage moves on the upper support plate 13, the sprockets 7 and the guide chain 4 move accordingly.

[0034] In a specific embodiment of this utility model, the precise position control method for the scissor fork lifting mechanism employs a cylinder 1 for driving the lifting, and an electric push rod 3 for adjusting the lifting position. Because the electric push rod 3 has a position monitoring function, it can accurately adjust the lifting height. This precise position control method for scissor lifting is used in the pipe pile industry. When the scissor fork rises, the guide chain 4 contacts the reinforcing cage, lifting different reinforcing cages to a fixed height. The traction trolley pulls the reinforcing cage out of the welding machine; during this pulling, the guide chain 4 moves together with the reinforcing cage. This method is not limited to the current pipe pile industry.

[0035] Cylinder 1 moves and pushes the scissor fork lifting structure 2 to move upward.

[0036] The cylinder connector 5 moves backward and stops when it encounters the stop block 6. The stop block 6 is fixed to the head of the electric push rod 3. The position of the stop block 6 can be automatically adjusted to control the final position of the cylinder 1, thereby controlling the lifting height of the scissor lift structure 2. The electric push rod 3 is equipped with a Hall sensor, potentiometer, or encoder to detect the rotation angle. The motor rotation drives the lead screw to translate, thereby measuring the translation distance. Alternatively, the electric push rod 3 can have limit sensors at both ends.

[0037] The two chains on the scissor lift structure 2 are in contact with the rib cage (object). When the rib cage moves on it, the sprocket 7 and the chain also move, thereby reducing the friction at the support point.

[0038] The electric actuator 3 accurately controls the lifting height of the scissor lift structure 2 and adjusts it automatically. Multiple lifting units can be controlled, or controlled synchronously. At the same time, one controller can control multiple electric actuators 3, and the electric actuators 3 are not limited to the assembly method.

[0039] The electric actuator with three limit switches is not limited to an integral type; it can also be a spliced ​​type.

[0040] When the rib cage (object) moves on the conveyor sprocket 7 and guide chain 4 on the scissor lift structure 2, friction can be reduced.

[0041] Cylinder 1 extends, translation hinge 18 moves forward, and drive linkage 12 swings inward, causing upper support plate 13 to move upward. When translation hinge 18 stops at stop block 6, upper support plate 13 also stops rising. Stop block 6 is connected to electric push rod 3. When electric push rod 3 moves inward a certain distance, the extension distance of cylinder 1 becomes shorter, thereby adjusting the lifting height of upper support plate 13.

[0042] The center height of the rib cage remains constant. For rib cages with different outer diameters, the height of the upper support plate 13 needs to be adjusted so that the guide chain 4 contacts the outer edge of the rib cage, thereby supporting the rib cage and preventing it from sagging.

[0043] For the specific implementation scheme of this embodiment, please refer to the relevant descriptions in the above embodiments, which will not be repeated here.

[0044] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0045] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means at least two.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] This invention employs a device that controls the lifting and lowering position of a scissor fork using an electric push rod. The electric push rod 3 limits the extension length of the cylinder 1 driving the lifting and lowering of the scissor fork, thereby precisely controlling the lifting and lowering height of the scissor fork, and can also be automatically adjusted. When multiple units are operating, the adjustment position is consistent. The electric push rod 3 has a compact overall size, making it easy to install.

[0048] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be considered illustrative rather than restrictive.

Claims

1. A device for shear fork lift position control by electric push rod, characterized in that, The device includes a base frame, a cylinder, an electric push rod, a driven connecting rod, a driving connecting rod, an upper support plate, an intermediate hinge point, a limiting hinge point, and a translation hinge point. The middle ends of the driven connecting rod and the driving connecting rod are connected through the intermediate hinge point. The top end of the driving connecting rod is connected to one end of the upper support plate. The top end of the driven connecting rod is connected to the other end of the upper support plate through the limiting hinge point. The bottom end of the driven connecting rod is connected to the base frame. The bottom end of the driving connecting rod is connected to the translation hinge point, which is connected to the cylinder. The electric push rod is mounted inside the base frame via a bracket and supports forward and backward pushing. The cylinder is mounted on the base frame and supports forward and backward movement, driving the driving connecting rod to move and causing the upper support plate to rise and fall.

2. The apparatus for scissor fork lift position control by electric push rod according to claim 1, characterized in that, The device also includes a cylinder connector and a stop block. The cylinder connector is installed at the tail end of the cylinder, and the stop block is installed at the head of the electric push rod. When the cylinder connector moves back and forth with the cylinder, it stops moving when it touches the stop block.

3. The apparatus for scissor fork lift position control by electric push rod according to claim 2, characterized in that, The front and rear positions of the stop block can be automatically adjusted.

4. The apparatus for scissor fork lift position control by electric push rod according to claim 1, wherein, The lifting scissor fork also includes a guide chain and sprockets. Two sprockets are mounted on the side of the upper support plate. The guide chain surrounds the two sprockets and rotates around them. The rib cage is placed on the upper support plate, and the top of the guide chain contacts the outer edge of the rib cage. When the rib cage moves on the upper support plate, the sprockets and guide chain follow the movement.

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