High-frequency trigger limiting structure and lifting equipment
By introducing a micro switch and a limiting structure with an adjusting spring into the lifting device, the deformation and displacement problems of the limiting structure during high-frequency cyclic lifting are solved, achieving simple, safe and reliable motor control.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-03-24
AI Technical Summary
Existing lifting devices are prone to deformation and displacement of the limit structure during high-frequency cyclic lifting, leading to safety hazards. Furthermore, traditional solutions have limitations in reliability and practicality.
The high-frequency trigger limit structure, consisting of a micro switch, an adjusting spring, and a limit end, achieves reliable motor control by triggering the micro switch through the movement of the suspension rope. It is simple in structure, durable, and impact-resistant.
It achieves structural reliability and safety during high-frequency cyclic lifting, reduces impact force, and saves internal space of the lifting body.
Smart Images
Figure CN224030545U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to lifting device technical field, more specifically, it relates to a kind of high-frequency trigger limiting structure and lifting equipment suitable for repeated cycle lifting application scene. BACKGROUND
[0002] The function of the limiting structure on the lifting device is to lift the electric appliance to the main machine position, and the lifting platform touches the position trigger, and the position trigger feeds back the position signal to the control panel, so that the control program drives the motor to stop, to prevent the safety hazard caused by the motor working after the electric appliance is lifted to the position. At present, the automatic cycle lifting dynamic lamp decoration can produce high-frequency limit triggering and collision, and the traditional limiting structure can appear deformation, displacement and other phenomena.
[0003] For the use scene of large lifting load, fast speed and cycle lifting, the impact on the position trigger and the lifting main body when the hanging object is in position, especially the repeated cycle lifting, the high-frequency collision causes the deformation or displacement of the limiting device of the lifting main body, thereby generating parallel problems or limiting failure. At present, the solution is to use non-contact limiting or double limiting symmetric parallel method, but in application, the reliability, practicability, failure rate and other aspects have limitations or defects of different degrees. (Such as non-contact limiting cannot be used in places with sound and other magnetic fields, double parallel increases the volume of main machine, etc.), and the ideal effect is not achieved. Therefore, the technical person urgently needs a lifting position triggering structure suitable for cycle lifting application scene, which is simple in structure, durable in impact, sensitive and reliable. UTILITY MODEL CONTENT
[0004] The main purpose of the utility model is to provide a high-frequency trigger limiting structure and lifting equipment, which is simple in structure, small in impact and high in safety.
[0005] According to the first aspect of the utility model, a high-frequency trigger limiting structure is provided, which comprises:
[0006] A lifting main body is provided with an A through hole and an upper limiting end above the A through hole, the upper limiting end is fixed on the lifting main body through a mounting frame, and a wire guide wheel is arranged above the upper limiting end;
[0007] A moving sleeve is installed in the A through hole and can move in the A through hole, and a lower limiting end is arranged at the upper end of the moving sleeve; The moving sleeve, the upper limiting end and the lower limiting end are all provided with a B through hole for the hanging rope to pass through;
[0008] An adjusting spring is arranged between the upper limiting end and the lower limiting end, and the hanging rope passes through the hollow part of the adjusting spring;
[0009] Micro switch, the micro switch is arranged on the lifting main body, the working end of the micro switch extends between the upper limit end and the lower limit end, when the lower limit end goes up, the working end of the micro switch can be driven by the lower limit end to start;
[0010] Touching part, the touching part is installed on the hanging rope and below the moving sleeve, the touching part can be in contact with the moving sleeve to drive the moving sleeve to move to the direction of the upper limit end.
[0011] In a specific embodiment of the utility model, the touching part is a knot on the hanging rope, or the touching part is an F touching block fixed on the hanging rope.
[0012] In a specific embodiment of the utility model, a threading space for the hanging rope is formed between the two wire wheels, the threading space is opposite to the B through hole of the upper limit end, and the wire wheels are installed on the mounting frame.
[0013] In a specific embodiment of the utility model, a limiting surface is arranged on the side surface of the lower limit end, and the limiting surface is arranged opposite to the side surface of the mounting frame to form a limiting structure.
[0014] In a specific embodiment of the utility model, a gasket is arranged on the lower end surface of the upper limit end, a B through hole for the hanging rope is arranged on the gasket, and the adjusting spring is in pressure contact with the upper limit end through the gasket.
[0015] According to the second aspect of the utility model, the lifting device comprises an electric appliance and a high-frequency trigger limiting structure, a motor is installed in the lifting main body, a winding wheel is installed at the output end of the motor, the winding wheel is provided with a hanging rope, and the hanging rope is connected with the electric appliance.
[0016] The above technical scheme of the utility model has at least one of the following advantages or beneficial effects: in the utility model, the working end of the micro switch extends between the upper limit end and the lower limit end, when the motor winds the hanging rope, the touching part goes up with the hanging rope, and the touching part is in contact with the moving sleeve to drive the moving sleeve to move to the direction of the upper limit end, when the lower limit end goes up, the working end of the micro switch can be driven by the lower limit end to go up, the adjusting spring is compressed, and the micro switch is triggered, the micro switch works to form a motor control instruction, the utility model is suitable for application scenarios of repeated lifting cycles, has simple structure, is durable and impact-resistant, and is sensitive and reliable. BRIEF DESCRIPTION OF DRAWINGS
[0017] The utility model will be further described in connection with the drawings and embodiments;
[0018] Figure 1 It is the structure of the high-frequency trigger limiting structure in an embodiment of the utility model Figure One ;
[0019] Figure 2 is a structure diagram of the high-frequency trigger limiting structure in one embodiment of the utility model Figure Two ;
[0020] Figure 3 is a plan view of the lower limit end in one embodiment of the utility model
[0021] Figure 4 is a sectional view of the lower limit end and the moving sleeve in one embodiment of the utility model
[0022] Figure 5 is a structure diagram of the lifting device in one embodiment of the utility model Figure One ;
[0023] Figure 6 is a structure diagram of the lifting device in one embodiment of the utility model Figure Two . DETAILED DESCRIPTION
[0024] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as a limitation on the utility model.
[0025] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, and therefore cannot be understood as a limitation on the utility model.
[0026] In the description of the utility model, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described to the first, the second is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0027] In addition, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features.
[0028] In the description of the utility model, need explanation, unless another explicit provision and limitation, term "connect" should do broad sense understanding, for example, can be fixed connection or movable connection, also can be detachable connection or non detachable connection, or integrally connected;Can be mechanical connection, also can be electric connection or can communicate with each other;It can be directly connected, also can be indirectly connected through intermediate medium, can be the internal communication of two elements, indirect communication or the interaction relationship of two elements.
[0029] The following disclosure provides many different implementations or examples to implement different aspects of the utility model.
[0030] Referring to Figures 1 to 4 As shown in the figure, high frequency trigger limiting structure, comprising:
[0031] Lifting main body 10, A through hole and upper limiting end 14 located above A through hole are arranged on the lifting main body 10;
[0032] Mobile sleeve 11, the mobile sleeve 11 is installed in A through hole and can move in A through hole, the upper end of the mobile sleeve 11 is provided with lower limiting end 12, and the outer dimension of at least one angle or position of lower limiting end 12 is greater than the inner diameter of A through hole, so that lower limiting end 12 cannot pass through the A through hole;The mobile sleeve 11, upper limiting end 14 and lower limiting end 12 are all provided with B through hole 122 for the rope to pass through;
[0033] Adjusting spring 13, the adjusting spring 13 is arranged between upper limiting end 14 and lower limiting end 12, and the rope passes through the hollow part of adjusting spring 13;
[0034] Micro switch 18, the micro switch 18 is arranged on the lifting main body 10, the working end 22 of the micro switch 18 extends between the upper limiting end 14 and the lower limiting end 12, and when the lower limiting end 12 goes up, the working end 22 of the micro switch 18 can be driven to start by the lower limiting end 12;
[0035] Touching part 21, the touching part 21 is installed on the rope 20 and located below the mobile sleeve 11, and the touching part 21 can be in contact with the mobile sleeve 11 to drive the mobile sleeve 11 to move in the direction of upper limiting end 14.
[0036] When the motor 40 drives the winding wheel 30 to rotate, the winding wheel 30 winds the lifting rope 20, the touching part 21 goes up with the lifting rope 20, and the touching part 21 is in abutment with the moving sleeve 11 to drive the moving sleeve 11 to move to the direction of the upper limiting end 14, when the lower limiting end 12 goes up, the working end 22 of the micro switch 18 can be driven by the lower limiting end 12 to go up, the adjusting spring 13 is compressed, and the micro switch 18 is triggered, the micro switch 18 works to form a motor control instruction, the utility model has the advantages of simple structure, small impact force, safety and reliability, and saving of internal space of the lifting main body 10.
[0037] In a specific embodiment of the utility model, the upper limiting end 14 is fixed on the lifting main body 10 through the mounting frame 16, and at least one wire guide wheel 17 is arranged above the upper limiting end 14. The cross section of the mounting frame 16 is L-shaped, the upper limiting end 14 is arranged on the side surface of the mounting frame 16, and the wire guide wheel 17 guides the lifting rope 20, so that the lifting rope 20 can smoothly pass through the B through hole 122.
[0038] In a specific embodiment of the utility model, the number of the wire guide wheels 17 is two, a threading space for the lifting rope 20 to pass through is formed between the two wire guide wheels 17, the threading space guides the lifting rope 20, the threading space is opposite to the B through hole 122 of the upper limiting end 14, and the wire guide wheels 17 are mounted on the mounting frame 16. The wire guide wheels can be mounted on the mounting frame through bolts, welding and the like.
[0039] In a specific embodiment of the utility model, a limiting surface 121 is arranged on the side surface of the lower limiting end 12, the limiting surface 121 and the side surface of the mounting frame 16 are oppositely arranged to form a limiting structure, relative rotation of the moving sleeve 11 and the lower limiting end 12 is prevented in the process of winding or releasing the lifting rope 20, and the structure is simple and reliable.
[0040] In a specific embodiment of the utility model, a gasket 15 is arranged on the lower end surface of the upper limiting end 14, a B through hole 122 for the lifting rope 20 to pass through is arranged on the gasket 15, the adjusting spring 13 is in abutment with the upper limiting end 14 through the gasket 15, the gasket 15 makes the adjusting spring 13 not directly contact the upper limiting end 14, and the gasket 15 buffers and / or protects the upper limiting end 14.
[0041] In one specific embodiment of the utility model, the touch part 21 is a knot on the lifting rope 20, specifically, the outer diameter of the knot is larger than the inner diameter of the B through hole 122 of the moving sleeve 11, so that the knot can drive the moving sleeve 11 to move upwards. Alternatively, the touch part 21 is an F touch block fixed on the lifting rope 20, the F touch block is also provided with a through hole for the lifting rope 20 to pass through, and the F touch block can be fixed on the lifting rope 20 by riveting, buckling or the like. The lifting rope 20 is reeled, the F touch block goes up with the lifting rope 20, the F touch block contacts the moving block, and the moving sleeve 11 is driven to move upwards. Specifically, the F touch block can also be a buckle, as long as the F touch block protrudes on the rope and can touch the moving sleeve.
[0042] According to the second aspect of the utility model, as shown in Figure 5 and Figure 6 , a lifting device is provided, comprising an electric appliance and a high-frequency trigger limiting structure, a motor 40 is installed in the lifting main body 10, a reeling wheel 30 is installed at the output end of the motor 40, the reeling wheel 30 is provided with a lifting rope 20, and the lifting rope 20 is connected with the electric appliance.
[0043] The motor 40 drives the reeling wheel 30 to rotate, the reeling wheel 30 reels the lifting rope 20, the touch part 21 goes up with the lifting rope 20, and contacts the moving sleeve 11 to drive the moving sleeve 11 to move in the direction of the upper limiting end 14, when the lower limiting end 12 goes up, the working end 22 of the micro switch 18 can be driven by the lower limiting end 12 to go up, the adjusting spring 13 is compressed, and the micro switch 18 is triggered, the micro switch 18 makes the motor 40 stop working, the utility model has the advantages of simple structure, small impact force, safety and reliability, and saving of internal space of the lifting main body 10.
[0044] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.
Claims
1. A high-frequency triggering limit structure, characterized in that, include: A lifting body is provided with an A-through hole and an upper limit end located above the A-through hole. The upper limit end is fixed to the lifting body by a mounting bracket, and a guide wheel is provided above the upper limit end. A movable sleeve is installed in and can move within the A through hole. The upper end of the movable sleeve is provided with a lower limit end. The movable sleeve, the upper limit end, and the lower limit end are all provided with a B through hole for the suspension rope to pass through. An adjusting spring is provided between the upper limit end and the lower limit end, and the suspension rope passes through the hollow part of the adjusting spring. A micro switch is installed on the lifting body. The working end of the micro switch extends between the upper limit end and the lower limit end. When the lower limit end moves upward, the working end of the micro switch can be driven by the lower limit end to start. An actuating part is mounted on the suspension rope and located below the movable sleeve. The actuating part can abut against the movable sleeve to drive the movable sleeve to move towards the upper limit end.
2. The high-frequency triggering limiting structure according to claim 1, characterized in that, The triggering part is a knot on the suspension rope, or the triggering part is an F-trigger block fixed on the suspension rope.
3. The high-frequency triggering limiting structure according to claim 1, characterized in that, A threading space is formed between the two guide wheels for the suspension rope to pass through, and the threading space is opposite to the B through hole at the upper limit end. The guide wheels are mounted on the mounting bracket.
4. The high-frequency triggering limiting structure according to claim 1, characterized in that, The lower limit end has a limit surface on its side, and the limit surface is arranged opposite to the side of the mounting bracket to form a limit structure.
5. The high-frequency triggering limiting structure according to claim 1, characterized in that, A gasket is provided on the lower end face of the upper limit position, and a B-hole is provided on the gasket for the suspension rope to pass through. The adjusting spring is pressed against the upper limit position through the gasket.
6. A lifting device, characterized in that, The device includes an electrical appliance and a high-frequency trigger limit structure as described in any one of claims 1 to 5. A motor is installed inside the lifting body, and a winding wheel is installed at the output end of the motor. The winding wheel is provided with a suspension rope, and the suspension rope is connected to the electrical appliance.