Distance measuring device

Abstract

The utility model relates to the technical field of automatic distance measurement, in particular to a distance measurement device, which comprises a first shell, a first motor assembly, a second shell and a second motor assembly, one end of the first shell is connected with the second shell, a distance measurement cavity is arranged between the first shell and the second shell, the first motor assembly is arranged in the first shell, and the second motor assembly is arranged in the second shell. The first motor assembly is arranged in the first shell, the second motor assembly is arranged in the second shell, a first distance measuring element is arranged at the driving end of the first motor assembly, a second distance measuring element is arranged at the driving end of the second motor assembly, and the first distance measuring element and the second distance measuring element are both located in the distance measuring cavity; according to the utility model, through accurately measuring the rotation angle of the motor assembly and converting the rotation angle into a corresponding driving distance according to a preset algorithm, the device can realize extremely high distance measurement precision.

Description

Technical Field

[0001] This utility model relates to the field of automatic ranging technology, and in particular to a ranging device. Background Technology

[0002] Ranging, as an advanced measurement technology, primarily utilizes modern electronic, optical, or acoustic principles, combined with sophisticated algorithms, to automate the non-contact distance measurement process. This technology is widely used in industrial measurement, robot navigation, autonomous driving, aerospace, topographic mapping, and everyday consumer electronics. In automatic ranging systems, light waves of specific wavelengths, such as lasers, sound waves, or radio waves, are emitted, and the signals reflected or scattered from the target surface are received. Based on parameters such as the round-trip time difference, phase difference, or frequency change of the signal, combined with the propagation speed in the medium, the system accurately calculates the distance between the target and the ranging device.

[0003] However, existing methods that rely on reflected or scattered signals have certain deviations, affecting ranging accuracy. Therefore, new improvements are needed to the existing ranging methods. Utility Model Content

[0004] To solve the above problems, this invention provides a ranging device with extremely high ranging accuracy by accurately measuring the rotation angle of the motor assembly and converting it into a corresponding driving distance according to a preset algorithm.

[0005] The technical solution adopted by this utility model is as follows: a ranging device, including a first housing, a first motor assembly, a second housing, and a second motor assembly. One end of the first housing is connected to the second housing. A ranging cavity is provided between the first housing and the second housing. The first motor assembly is disposed inside the first housing, and the second motor assembly is disposed inside the second housing. A first ranging element is disposed at the driving end of the first motor assembly, and a second ranging element is disposed at the driving end of the second motor assembly. Both the first and second ranging elements are located inside the ranging cavity. The first motor assembly is used to drive the first ranging element to rotate within the first ranging cavity to obtain the rotation angle of the first motor assembly and calculate the driving distance of the first motor assembly. The second motor assembly is used to drive the second ranging element to rotate within the second ranging cavity to obtain the rotation angle of the second motor assembly and calculate the driving distance of the second motor assembly.

[0006] A further improvement to the above solution is that the first housing includes a first connecting end, a fixed mounting plate, and a first motor mounting part arranged sequentially. The first connecting end is connected to the second housing, the fixed mounting plate is disposed on the outer periphery of the first housing, and the first motor mounting part is used to connect the first motor assembly.

[0007] A further improvement to the above solution is that the second housing includes a second connecting end and a second motor mounting part arranged sequentially, the second connecting end being used to connect to the first connecting end, and the second motor assembly being disposed in the second motor mounting part.

[0008] A further improvement to the above solution is that the first connecting end is provided with a connecting protrusion, and there are multiple connecting protrusions arranged in a circumferential manner on the first connecting end; the second connecting end is provided with a connecting slot, which is used to cooperate with the connecting protrusion so that the first connecting end and the second connecting end are fixedly engaged.

[0009] A further improvement to the above scheme is that the first motor assembly includes a first bearing, a first stator element, a first rotor element, and a first rotating element. The first bearing is disposed in a first housing, the first stator element is disposed on one side of the first housing, the first rotating element is rotatably connected to the first bearing, one end of the first rotating element is provided with a first mounting step, and the first ranging element is disposed on the first mounting step.

[0010] A further improvement to the above scheme is that a first rotating step is provided on the inner circumference of the first housing, and a first limiting ring is provided on the first rotating element. The first limiting ring and the first rotating step are respectively used to fix the two sides of the first bearing.

[0011] A further improvement to the above scheme is that a first fixing ring is provided on the side of the first limiting ring that is opposite to the first bearing, and the first fixing ring is used to fix the first ranging element.

[0012] A further improvement to the above scheme is that the second motor assembly includes a second bearing, a second stator element, a second rotor element, and a second rotating element. The second bearing is disposed inside the second housing, the second stator element is disposed on one side of the second housing, the second rotating element is rotatably connected to the second bearing, one end of the second rotating element is provided with a second mounting step, and the second ranging element is disposed on the second mounting step.

[0013] A further improvement to the above scheme is that a second rotating step is provided on the inner circumference of the second housing, and a second limiting ring is provided on the second rotating element. The second limiting ring and the second rotating step are respectively used to fix the two sides of the second bearing.

[0014] A further improvement to the above scheme is that a second fixing ring is provided on the side of the second limiting ring that is opposite to the second bearing, and the second fixing ring is used to fix the second ranging element.

[0015] A further improvement to the above scheme is that the first rotating element and the second rotating element are arranged coaxially.

[0016] The beneficial effects of this utility model are:

[0017] Compared to existing motor-driven ranging methods, this invention effectively utilizes space and ensures stability and coordination among components by placing the first and second motor assemblies within the first and second housings respectively, forming a ranging cavity. This simplifies production, installation, and maintenance, reduces overall size and weight, and is suitable for measurement scenarios with limited space or requiring rapid response. The first and second ranging elements are each driven by their own independent motor assemblies, achieving precise rotation within the ranging cavity. By accurately measuring the rotation angle of the motor assemblies and converting it into the corresponding driving distance according to a preset algorithm, the device achieves extremely high ranging accuracy. This direct measurement method based on motor rotation angle provides more stable and reliable ranging results under specific conditions compared to traditional indirect ranging methods, making it particularly suitable for fields requiring high-precision measurements such as industrial inspection, robot navigation, and automated production lines. The configuration of dual motor assemblies and dual ranging elements not only enables precise ranging in a single direction but also allows for multi-dimensional spatial measurement by combining the two ranging elements. For example, by controlling the rotation of two motor components synchronously or asynchronously, the ranging direction, angle, and even the formation of complex measurement paths can be flexibly adjusted to meet diverse measurement needs in complex environments. This multi-degree-of-freedom measurement capability greatly expands the application range of the device, enabling it to adapt to more diverse application scenarios. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the distance measuring device of this utility model;

[0019] Figure 2 for Figure 1 Front view schematic diagram of the ranging device;

[0020] Figure 3 for Figure 2 Sectional view of AA;

[0021] Figure 4 for Figure 3 Enlarged diagram of point A in the diagram;

[0022] Figure 5 for Figure 1 Explosion-proof diagram of the ranging device;

[0023] Figure 6 for Figure 1 A schematic diagram of an explosion from another perspective of the ranging device.

[0024] Explanation of reference numerals in the attached drawings: First housing 1, First connecting end 11, Connecting protrusion 111, Fixed mounting plate 12, First motor mounting part 13, First rotating step 14, First motor assembly 2, First bearing 21, First stator element 22, First rotor element 23, First rotating element 24, First mounting step 241, First limiting ring 242, First fixing ring 243, Second housing 3, Second connecting end 31, Connecting slot 311, Second motor mounting part 32, Second rotating step 33, Second motor assembly 4, Second bearing 41, Second stator element 42, Second rotor element 43, Second rotating element 44, Second mounting step 441, Second limiting ring 442, Second fixing ring 443, Distance measuring cavity 5, First distance measuring element 6, Second distance measuring element 7. Detailed Implementation

[0025] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Figures 1-6As shown, in one embodiment of this utility model, a ranging device is disclosed, comprising a first housing 1, a first motor assembly 2, a second housing 3, and a second motor assembly 4. One end of the first housing 1 is connected to the second housing 3. A ranging cavity 5 is provided between the first housing 1 and the second housing 3. The first motor assembly 2 is disposed within the first housing 1, and the second motor assembly 4 is disposed within the second housing 3. A first ranging element 6 is disposed at the driving end of the first motor assembly 2, and a second ranging element 7 is disposed at the driving end of the second motor assembly 4. Both the first ranging element 6 and the second ranging element 7 are located within the ranging cavity 5. The first motor assembly 2 drives the first ranging element 6 to rotate within the first ranging cavity 5 to obtain the rotation angle of the first motor assembly 2 and calculate the driving distance of the first motor assembly 2. The second motor assembly 4 drives the second ranging element 7 to rotate within the second ranging cavity 5 to obtain the rotation angle of the second motor assembly 4 and calculate the driving distance of the second motor assembly 4. This embodiment, by placing the first motor assembly 2 and the second motor assembly 4 within the first housing 1 and the second housing 3 respectively, forming the ranging cavity 5, not only effectively utilizes space but also ensures the stability and coordination between the components. This design not only facilitates production, installation, and maintenance but also reduces overall size and weight, making it suitable for measurement scenarios with limited space or requiring rapid response. The first ranging element 6 and the second ranging element 7 are each driven by an independent motor assembly, achieving precise rotation within the ranging cavity 5. By accurately measuring the rotation angle of the motor assembly and converting it into the corresponding driving distance according to a preset algorithm, the device achieves extremely high ranging accuracy. This direct measurement method based on motor rotation angle, compared to traditional indirect ranging methods, provides more stable and reliable ranging results under specific conditions, making it particularly suitable for fields requiring high-precision measurements such as industrial inspection, robot navigation, and automated production lines. Through the configuration of dual motor assemblies and dual ranging elements, precise ranging can be achieved not only in a single direction but also through the combined use of the two ranging elements to achieve multi-dimensional spatial measurement. For example, by synchronously or asynchronously controlling the rotation of the two motor assemblies, the ranging direction, angle, and even the formation of complex measurement paths can be flexibly adjusted to meet diverse measurement needs in complex environments. This multi-degree-of-freedom measurement capability greatly expands the device's application range, enabling it to adapt to more diverse application scenarios.

[0028] The first housing 1 includes a first connecting end 11, a fixed mounting plate 12, and a first motor mounting part 13 arranged sequentially. The first connecting end 11 is connected to the second housing 3. The fixed mounting plate 12 is disposed on the outer periphery of the first housing 1. The first motor mounting part 13 is used to connect the first motor assembly 2. Specifically, the second housing 3 includes a second connecting end 31 and a second motor mounting part 32 arranged sequentially. The second connecting end 31 is used to connect to the first connecting end 11. The second motor assembly 4 is disposed on the second motor mounting part 32. In this embodiment, the first housing 1 and the second housing 3 are tightly connected through the connecting end, ensuring the stability and sealing of the overall structure of the device, effectively resisting the interference of the external environment on the internal precision components, and improving the ranging accuracy and long-term operational stability. Secondly, the fixed mounting plate 12 is disposed on the outer periphery of the first housing 1, which not only provides additional mounting support points for the device, but also facilitates rapid integration and fixation with other equipment or platforms, enhancing the flexibility and convenience of use. Furthermore, the design of the first and second motor mounting parts 32 enables the first motor assembly 2 and the second motor assembly 4 to be accurately positioned and efficiently connected, optimizing power transmission efficiency, reducing energy loss, and facilitating motor maintenance and replacement, thereby reducing maintenance costs.

[0029] The first connecting end 11 is provided with connecting protrusions 111, and multiple connecting protrusions 111 are arranged in a circumferential manner on the first connecting end 11. The second connecting end 31 is provided with connecting slots 311, which are used to engage with the connecting protrusions 111 to securely engage the first connecting end 11 and the second connecting end 31. In this embodiment, the multiple connecting protrusions 111 arranged in a circumferential manner on the first connecting end 11 not only enhance the stability of the connection but also achieve uniform force distribution at multiple points, effectively avoiding damage caused by stress concentration at a single connection point, and improving the durability and reliability of the entire ranging device. Secondly, the connecting slots 311 designed on the second connecting end 31 precisely match the connecting protrusions 111, achieving quick and stable engagement and simplifying the assembly process. This engagement method also facilitates later maintenance; when it is necessary to replace or repair parts, it can be easily and quickly disassembled and reassembled, reducing maintenance costs. In addition, the circumferentially arranged connecting protrusions 111, in conjunction with the slot, have a certain degree of fault tolerance and fine-tuning space, which helps to adapt to minor deviations in different installation environments and ensures that the ranging device can maintain good connection status and working performance under various working conditions.

[0030] The first motor assembly 2 includes a first bearing 21, a first stator element 22, a first rotor element 23, and a first rotating element 24. The first bearing 21 is disposed within the first housing 1, the first stator element 22 is disposed on one side of the first housing 1, and the first rotating element 24 is rotatably connected to the first bearing 21. One end of the first rotating element 24 is provided with a first mounting step 241, and the first ranging element 6 is disposed on the first mounting step 241. Specifically, the inner circumference of the first housing 1 is provided with a first rotating step 14, and the first rotating element 24 is provided with a first limiting ring 242. The first limiting ring 242 and the first rotating step 14 are respectively used to fix the two sides of the first bearing 21. The side of the first limiting ring 242 opposite to the first bearing 21 is provided with a first fixing ring 243, which is used to fix the first ranging element 6. In this embodiment, the combination of the first bearing 21 and the rotating step, limiting ring, and fixing ring of the first housing 1 achieves stable support and precise positioning of the bearing, ensuring the stability and reliability of the rotating element under high-speed or high-precision operation. The first mounting step 241 provides a precise mounting reference for the first ranging element 6, effectively reducing the loss of ranging accuracy due to installation errors. Furthermore, the first fixing ring 243 not only enhances the fixing strength of the ranging element but also optimizes the mechanical transmission path of the overall structure, reducing the impact of vibration on ranging accuracy. This integrated design promotes seamless integration of the motor and ranging function, enabling the ranging device to maintain excellent measurement performance even in dynamic environments. It is suitable for various fields such as industrial automation, robot navigation, and precision measurement, enhancing the overall performance and application value of the equipment.

[0031] The second motor assembly 4 includes a second bearing 41, a second stator element 42, a second rotor element 43, and a second rotating element 44. The second bearing 41 is disposed within the second housing 3, the second stator element 42 is disposed on one side of the second housing 3, and the second rotating element 44 is rotatably connected to the second bearing 41. One end of the second rotating element 44 is provided with a second mounting step 441, and the second ranging element 7 is disposed on the second mounting step 441. Specifically, the inner circumference of the second housing 3 is provided with a second rotating step 33, and the second rotating element 44 is provided with a second limiting ring 442. The second limiting ring 442 and the second rotating step 33 are respectively used to fix the two sides of the second bearing 41. The side of the second limiting ring 442 opposite to the second bearing 41 is provided with a second fixing ring 443, which is used to fix the second ranging element 7. In this embodiment, the combination of the second bearing 41 and the rotating step, limiting ring, and fixing ring of the second housing 3 achieves stable support and precise positioning of the bearing, ensuring the stability and reliability of the rotating element under high-speed or high-precision operation. The second mounting step 441 provides a precise mounting reference for the second ranging element 7, effectively reducing the loss of ranging accuracy due to installation errors. Furthermore, the second fixing ring 443 not only enhances the fixing strength of the ranging element but also optimizes the mechanical transmission path of the overall structure, reducing the impact of vibration on ranging accuracy. This integrated design promotes seamless integration of the motor and ranging function, enabling the ranging device to maintain excellent measurement performance even in dynamic environments. It is suitable for various fields such as industrial automation, robot navigation, and precision measurement, enhancing the overall performance and application value of the equipment.

[0032] The first rotating element 24 and the second rotating element 44 are coaxially arranged. In this embodiment, the overall structure of the rotating system is optimized to ensure the accuracy and stability of the rotation. Because they are coaxial, the coaxiality error during rotation is significantly reduced, thereby improving the accuracy and reliability of the ranging data. In addition, the coaxial arrangement simplifies the complexity of the mechanical structure, reduces unnecessary transmission components, and allows for a reduction in the size and weight of the entire ranging device. This design also enhances the durability and shock resistance of the system, as coaxial rotation reduces vibration and wear caused by misalignment.

[0033] Both the first ranging element 6 and the second ranging element 7 are grating disks. By utilizing the moiré fringe effect of the grating, the distance change between the two grating disks is indirectly calculated by measuring the change in interference fringes generated when the two grating disks move relative to each other. This process does not require direct contact, reducing mechanical wear and sources of error.

[0034] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A ranging device, characterized by: The application relates to a distance measuring device, which comprises a first shell, a first motor assembly, a second shell and a second motor assembly, one end of the first shell is connected with the second shell, a distance measuring cavity is arranged between the first shell and the second shell, the first motor assembly is arranged in the first shell, the second motor assembly is arranged in the second shell, a driving end of the first motor assembly is provided with a first distance measuring element, a driving end of the second motor assembly is provided with a second distance measuring element, the first distance measuring element and the second distance measuring element are located in the distance measuring cavity, the first motor assembly is used for driving the first distance measuring element to rotate in the first distance measuring cavity, so that the first motor assembly driving distance is calculated according to the rotation angle of the first motor assembly, and the second motor assembly is used for driving the second distance measuring element to rotate in the second distance measuring cavity, so that the second motor assembly driving distance is calculated according to the rotation angle of the second motor assembly.

2. The ranging device of claim 1, wherein: The first shell comprises a first connecting end, a fixed mounting plate and a first motor mounting portion which are sequentially arranged, the first connecting end is connected with the second shell, the fixed mounting plate is arranged on the outer periphery of the first shell, and the first motor mounting portion is used for connecting the first motor assembly.

3. The ranging device of claim 2, wherein: The second shell comprises a second connecting end and a second motor mounting portion which are sequentially arranged, the second connecting end is used for connecting the first connecting end, and the second motor assembly is arranged in the second motor mounting portion.

4. The ranging device of claim 3, wherein: The first connecting end is provided with connecting protrusions, a plurality of connecting protrusions are arranged on the first connecting end in a ring shape, the second connecting end is provided with connecting clamping grooves which are used for matching the connecting protrusions so that the first connecting end and the second connecting end are fixedly connected.

5. The ranging device of claim 1, wherein: The first motor assembly comprises a first bearing, a first stator element, a first rotor element and a first rotating element, the first bearing is arranged in the first shell, the first stator element is arranged on one side of the first shell, the first rotating element is rotationally connected to the first bearing, one end of the first rotating element is provided with a first mounting step, and the first distance measuring element is arranged on the first mounting step.

6. The ranging device of claim 5, wherein: The inner periphery of the first shell is provided with a first rotating step, the first rotating element is provided with a first limiting ring, and the first limiting ring and the first rotating step are respectively used for fixing two sides of the first bearing.

7. The ranging device of claim 6, wherein: One side of the first limiting ring, which is away from the first bearing, is provided with a first fixing ring which is used for fixing the first distance measuring element.

8. The ranging device of claim 7, wherein: The second motor assembly comprises a second bearing, a second stator element, a second rotor element and a second rotating element, the second bearing is arranged in the second shell, the second stator element is arranged on one side of the second shell, the second rotating element is rotationally connected to the second bearing, one end of the second rotating element is provided with a second mounting step, and the second distance measuring element is arranged on the second mounting step.

9. The ranging device of claim 8, wherein: The inner periphery of the second shell is provided with a second rotating step, the second rotating element is provided with a second limiting ring, and the second limiting ring and the second rotating step are respectively used for fixing two sides of the second bearing.

10. The ranging device of claim 9, wherein: One side of the second limiting ring, which is away from the second bearing, is provided with a second fixing ring which is used for fixing the second distance measuring element. The first rotating element and the second rotating element are coaxially arranged. The first rotating element and the second rotating element are coaxially arranged.

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