Lifting machine device with automatic height limiter
By introducing automatic height limiters and photoelectric sensors into the lifting equipment, the safety issues of the equipment in the event of power failure or malfunction have been solved, achieving stability and convenience of the equipment, and improving the safety and operational efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YINGKOU LIDE ELECTRONICS TECH
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-21
AI Technical Summary
Existing lifting equipment lacks effective mechanical locking protection during the lifting process, which makes the load platform prone to accidental fall when power is interrupted or system failure occurs, posing a safety hazard. Furthermore, the lack of rotation angle adjustment devices during the handling of goods results in low handling efficiency.
A lifting device with an automatic height limiter was designed. A horizontal baffle is used as a fall prevention barrier. The baffle is flipped and clamped by an electric push rod. Combined with a servo motor-driven screw lifting system and photoelectric sensors, precise limit is achieved to ensure the safety and stability of the equipment in the event of power failure or malfunction.
It effectively prevents the carriage from falling accidentally, improves equipment safety and operational stability, ensures reliable fall protection in the event of power failure or system malfunction, and achieves stable support through convenient movement of wheels and support plate, thereby improving equipment safety and operational efficiency.
Smart Images
Figure CN224530510U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lifting machine technology, specifically a lifting machine device with an automatic height limiter. Background Technology
[0002] In the fields of modern industrial production and logistics transportation, lifting equipment, as an important material handling tool, is widely used in scenarios such as automobile repair, warehouse management, and material transfer on production lines;
[0003] According to CN220766404U, a lifting device for a transport vehicle is disclosed. This technology discloses a technical solution including "a support frame, a lifting structure above the support frame, a handrail on one side of the lifting structure, the handrail being fixedly connected to the upper part of the support frame, a storage plate connected to the other side of the lifting structure, the storage plate being slidably connected to the support frame, a box below the storage plate, an adjustment component inside the box, and a circular plate connected above the adjustment component; the adjustment component includes a vertical plate, a rotating component, an upper adjustment component, and a fixing component, the vertical plate being fixedly connected inside the box, and the rotating component being located above the vertical plate." This solution addresses the problem of "lacking a device to simultaneously rotate the item during transport when the direction of the item needs to be changed, resulting in a longer transport time and lower transport efficiency."
[0004] The lifting equipment in the above scheme has significant defects in terms of safety protection. If a power outage or system failure occurs during the lifting process, the load platform is prone to accidental fall due to the lack of effective mechanical locking protection, which may not only damage the goods, but also pose a serious threat to the safe operation of the equipment. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a lifting device with an automatic height limiter. The horizontal baffle forms a fall prevention barrier and can be flipped to secure goods. It is easy to move, and the pallet provides stable support when under heavy load, ensuring safe and stable operation.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a lifting device with an automatic height limiter, comprising a lifting mechanism for lifting and moving objects, the lifting mechanism comprising:
[0007] Main component: the upright frame fixed at the upper middle part of the frame;
[0008] The lifting assembly includes a mounting bracket fixed at both ends of the upright frame, with guide rods fixed at both ends of the mounting bracket, and a slide bracket slidably mounted longitudinally between the guide rods at both ends;
[0009] The anti-fall component is a base plate fixed to the bottom of the carriage. The left and right ends of the base plate are rotatably mounted with main shafts via bearings. The front and rear ends of the main shafts are fixed with bearings. A baffle is fixed between the inner ends of the bearings at both ends. A secondary shaft is fixed between the bearings at both ends. Electric push rods are pivotally connected to the left and right sides of the bottom of the base plate. The output end of the electric push rod is pivotally connected to a connector. The other end of the connector is fixed to the secondary shaft.
[0010] Preferably, the main component also includes wheels installed at the four corners of the bottom of the frame, and support plates are fixed at both the front and rear ends of the top of the frame.
[0011] Preferably, the lifting assembly further includes a lead screw rotatably mounted between the upper and lower ends of the mounting frame, and the lead screw is threadedly connected to the slide. A servo motor is mounted at the lower end of the mounting frame to drive the lead screw to rotate.
[0012] Preferably, the lifting mechanism further includes mounting seats fixed on the upper and lower sides of the outer wall of the right end of the upright, with slotted photoelectric sensors installed at both ends of the mounting seats, and a mounting plate installed at the bottom right end of the slide, with a trigger plate fixed on the mounting plate.
[0013] Preferably, the servo motor is electrically connected to the slotted photoelectric sensor. When the trigger plate triggers the slotted photoelectric sensor, the signal controls the servo motor to stop operating.
[0014] Preferably, the outer wall of the support frame has a plurality of longitudinally arranged threaded holes, and the mounting base is fixed to the support frame by bolts engaging with the threaded holes.
[0015] Beneficial effects
[0016] This utility model provides a lifting device with an automatic height limiter. Compared with the prior art, it has the following advantages:
[0017] 1. In the initial state, the two baffles are horizontal, forming a reliable physical support platform under the carriage, creating the first mechanical anti-fall barrier. Even if the equipment loses power or the system fails, it can effectively prevent the carriage from falling accidentally. When an object is placed on the carriage and needs to be lifted, the electric push rods on the left and right sides of the bottom of the base plate extend synchronously, pushing the connector through the output end. The connector drives the secondary shaft to rotate, and the secondary shaft drives the baffle to flip upward through the bearing seat, thereby clamping and fixing the object placed on the carriage from both sides, improving the safety and operational stability of the equipment.
[0018] 2. When the equipment needs to be moved, the operator can push the frame and use the wheels installed at the four corners of the bottom to move the whole machine flexibly and easily change the work site. When the carriage is in the lowest position and a heavy object is placed on it, the bottom of the carriage contacts the top of the pallet, and the pallet bears the main weight of the equipment and load. Through rigid contact, a stable support structure is formed, which effectively distributes the load and suppresses the vibration during the operation of the lifting machine. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0020] Figure 2 This is a schematic diagram of the main components in this utility model;
[0021] Figure 3 This is a schematic diagram of the lifting component in this utility model;
[0022] Figure 4 This is a schematic diagram of the anti-fall component in this utility model.
[0023] In the diagram: 1. Lifting mechanism; 11. Main component; 111. Frame; 112. Stand; 113. Wheel; 114. Pallet; 12. Lifting assembly; 121. Mounting bracket; 122. Guide rod; 123. Slide; 124. Lead screw; 125. Servo motor; 13. Anti-fall assembly; 131. Base plate; 132. Main shaft; 133. Shaft seat; 134. Baffle; 135. Secondary shaft; 136. Electric push rod; 137. Connector; 14. Mounting seat; 15. Slotted photoelectric sensor; 16. Mounting plate; 17. Trigger plate. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a lifting machine with an automatic height limiter, including a lifting mechanism 1 for lifting and moving objects, the lifting mechanism 1 including:
[0026] Main component 11, upright frame 112 fixed at the middle of the upper end of the frame 111;
[0027] The lifting assembly 12 includes a mounting frame 121 fixed at both ends of the upright frame 112. Guide rods 122 are fixed at both ends of the mounting frame 121, and a slide 123 is longitudinally slidably installed between the two guide rods 122.
[0028] The anti-fall component 13 is fixed to the base plate 131 at the bottom of the slide 123. The base plate 131 has a main shaft 132 rotatably mounted on both the left and right ends via bearing seats. The main shaft 132 has bearing seats 133 fixed at both the front and rear ends. A baffle 134 is fixed between the inner ends of the bearing seats 133 at both ends. A secondary shaft 135 is fixed between the bearing seats 133 at both ends. Electric push rods 136 are pivotally connected to the left and right sides of the bottom of the base plate 131. A connector 137 is pivotally connected to the output end of the electric push rod 136. The other end of the connector 137 is fixed to the secondary shaft 135.
[0029] In this embodiment, in the initial state, the two baffles 134 are in a horizontal state, forming a reliable physical support platform under the slide 123, forming the first mechanical anti-fall barrier, which can effectively prevent the slide 123 from falling accidentally even when the equipment loses power or the system fails. When an object is placed on the slide 123 and needs to be lifted, the electric push rods 136 on the left and right sides of the bottom of the base plate 131 extend synchronously, and push the connector 137 through the output end. The connector 137 drives the secondary shaft 135 to rotate, and the secondary shaft 135 drives the baffle 134 to flip upward through the bearing 133, thereby clamping and fixing the object placed on the slide 123 from both sides, improving the safety and operational stability of the equipment.
[0030] Specifically, the main component 11 also includes wheels 113 installed at the four corners of the bottom of the frame 111, and support plates 114 are fixed at both the front and rear ends of the top of the frame 111.
[0031] In this embodiment, when the equipment needs to be moved, the operator can push the frame 111 and use the rolling of the wheels 113 installed at the four corners of the bottom to make the whole machine move flexibly and easily change the work site; when the slide 123 is in the lowest state and a heavy object is placed on it, the bottom of the slide 123 contacts the top of the support plate 114, and the support plate 114 bears the main weight of the equipment and load. Through rigid contact, a stable support structure is formed, which effectively distributes the load and suppresses the vibration during the operation of the lift.
[0032] Specifically, the lifting assembly 12 also includes a lead screw 124 rotatably mounted between the upper and lower ends of the mounting bracket 121, and the lead screw 124 is threadedly connected to the slide 123. A servo motor 125 is mounted on the lower end of the mounting bracket 121 and is used to drive the lead screw 124 to rotate.
[0033] In this embodiment, the lead screw 124 is driven to rotate by the servo motor 125. The rotational motion is converted into the precise linear motion of the slide 123 along the guide rod 122 by the threaded engagement between the lead screw 124 and the slide 123, so as to achieve smooth lifting and lowering.
[0034] Specifically, the lifting mechanism 1 also includes mounting bases 14 fixed on the upper and lower sides of the outer wall of the right end of the upright frame 112. The mounting bases 14 are equipped with slotted photoelectric sensors 15 at both ends. The right end of the bottom of the slide 123 is equipped with a mounting plate 16, and a trigger plate 17 is fixed on the mounting plate 16.
[0035] In this embodiment, when the slide 123 rises and falls along the guide rod 122, the mounting plate 16 fixed to its bottom drives the trigger piece 17 to move synchronously. When the trigger piece 17 enters the U-shaped groove of any slotted photoelectric sensor 15 on the upper and lower mounting bases 14 outside the stand 112, its infrared light path will be interrupted, and the sensor will immediately generate an electrical signal and transmit it to the control system. The slotted photoelectric sensor 15 adopts a non-contact detection method and is triggered by physical light path interruption. It has extremely high repeatability and anti-electromagnetic interference capability, ensuring that the limit signal trigger position is absolutely consistent. The upper and lower dual sensor arrangement can correspond to the upper limit and lower limit respectively, realizing full-stroke safety protection.
[0036] Specifically, the servo motor 125 is electrically connected to the slotted photoelectric sensor 15. When the trigger piece 17 triggers the slotted photoelectric sensor 15, the signal controls the servo motor 125 to stop running.
[0037] Specifically, the outer wall of the support frame 112 has several threaded holes arranged longitudinally, and the mounting base 14 is fixed to the support frame 112 by bolts engaging with the threaded holes.
[0038] The working principle and usage process of this utility model are as follows: First, in the initial state, the two baffles 134 are in a horizontal state, forming a reliable physical support platform under the slide 123, forming the first mechanical anti-fall barrier, which can effectively prevent the slide 123 from falling accidentally even when the equipment is powered off or the system fails; when an object is placed on the slide 123 and needs to be lifted, the electric push rods 136 on the left and right sides of the bottom of the base plate 131 extend synchronously, and push the connector 137 through the output end. The connector 137 drives the secondary shaft 135 to rotate, and the secondary shaft 135 drives the baffle 134 to flip upward through the bearing 133, thereby clamping and fixing the object placed on the slide 123 from both sides, improving the safety and operational stability of the equipment;
[0039] The servo motor 125 drives the lead screw 124 to rotate, and the threaded engagement between the lead screw 124 and the slide 123 converts the rotational motion into precise linear motion of the slide 123 along the guide rod 122, achieving smooth lifting and lowering. Furthermore, as the slide 123 rises and falls along the guide rod 122, the mounting plate 16 fixed to its bottom drives the trigger plate 17 to move synchronously. When the trigger plate 17 enters the U-shaped groove of any slotted photoelectric sensor 15 on the upper or lower mounting base 14 outside the upright frame 112, its infrared light path is interrupted, and the sensor immediately generates an electrical signal and transmits it to the control system. The slotted photoelectric sensor 15 adopts a non-contact detection method, triggering through physical optical path interruption, possessing extremely high repeatability and anti-electromagnetic interference capabilities, ensuring absolute consistency of the limit signal trigger position. The arrangement of the upper and lower dual sensors can respectively correspond to the upper and lower limits, achieving full-stroke safety protection.
[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A lifting device with an automatic height limiter, characterized in that: Includes a lifting mechanism (1) for lifting and moving objects, the lifting mechanism (1) including: The main component (11) has a support frame (112) fixed at the middle of the upper part of the frame (111); The lifting assembly (12) includes a mounting bracket (121) fixed at the front and rear ends of the upright frame (112), and guide rods (122) are fixed at both ends of the mounting bracket (121). A slide (123) is longitudinally slidably installed between the two guide rods (122). The anti-fall component (13) is fixed to the base plate (131) at the bottom of the slide (123). The base plate (131) has a main shaft (132) rotatably mounted on both the left and right ends via bearing seats. The main shaft (132) has bearing seats (133) fixed at both the front and rear ends. A baffle (134) is fixed between the inner ends of the bearing seats (133) at both ends. A secondary shaft (135) is fixed between the bearing seats (133) at both ends. Electric push rods (136) are pivotally connected to the left and right sides of the bottom of the base plate (131). A connector (137) is pivotally connected to the output end of the electric push rod (136). The other end of the connector (137) is fixed to the secondary shaft (135).
2. The lifting equipment with an automatic height limiter according to claim 1, characterized in that: The main component (11) also includes wheels (113) installed at the four corners of the bottom of the frame (111), and support plates (114) are fixed at both the front and rear ends of the top of the frame (111).
3. A lifting device with an automatic height limiter according to claim 1, characterized in that: The lifting assembly (12) also includes a lead screw (124) rotatably mounted between the upper and lower ends of the mounting bracket (121), and the lead screw (124) is threadedly connected to the slide (123). A servo motor (125) is mounted on the lower end of the mounting bracket (121) and is used to drive the lead screw (124) to rotate.
4. A lifting device with an automatic height limiter according to claim 3, characterized in that: The lifting mechanism (1) also includes mounting bases (14) fixed on the upper and lower sides of the outer wall of the right end of the upright (112). The mounting bases (14) are equipped with slotted photoelectric sensors (15) at both ends. The right end of the bottom of the slide (123) is equipped with a mounting plate (16), and a trigger plate (17) is fixed on the mounting plate (16).
5. A lifting device with an automatic height limiter according to claim 4, characterized in that: The servo motor (125) is electrically connected to the slotted photoelectric sensor (15). When the trigger piece (17) triggers the slotted photoelectric sensor (15), the signal controls the servo motor (125) to stop running.
6. A lifting device with an automatic height limiter according to claim 4, characterized in that: The outer wall of the support frame (112) has a number of threaded holes arranged longitudinally, and the mounting base (14) is fixed to the support frame (112) by bolts engaging the threaded holes.