Connecting device for installing camera at large arm of excavator

Abstract

The utility model provides a connecting device for installing a camera at a big arm of an excavator, which comprises a bottom plate, a connecting piece, a connecting piece and a connecting piece, the lower end face of the bottom plate is provided with an installing plate, and the installing plate is provided with an installing hole for connecting the camera; the number of the clamping plates is two, a clamping position for clamping the large arm of the excavator is formed between the two clamping plates, and the clamping plates are movably connected to the bottom plate; and the pressing plate is movably connected to the clamping plate, and the pressing plate corresponds to the clamping position in position. The device has the advantages that through the movable clamping plate and the pressing plate fixing device, the device is suitable for excavators of different models, the application range of the device is widened, meanwhile, the mounting and dismounting process is convenient, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of earthwork excavation technology, and in particular relates to a connecting device for installing a camera on the boom of an excavator. Background Technology

[0002] Whether the bucket is fully loaded during each digging action of an excavator directly affects work efficiency. By installing a camera on the excavator boom, the bucket's load status can be monitored in real time. Currently, there are two methods for installing cameras on the excavator boom: First, the camera base is glued to the excavator boom. This method is not secure and is inconvenient to disassemble when relocating. Second, a mounting plate is welded to the excavator boom, and the camera base is connected to the mounting plate with bolts. The welding process is complex, and welding can easily cause changes in the structural strength of the excavator boom. Third, threaded holes are drilled in the excavator boom, and the camera base is connected to the excavator boom with bolts. Drilling holes can affect the structural strength of the excavator boom, and the operation process is complex. Utility Model Content

[0003] In view of this, the present invention aims to provide a connecting device for installing a camera at the boom of an excavator, in order to solve at least one of the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A connection device for mounting a camera on the boom of an excavator includes:

[0006] A base plate, wherein a mounting plate is provided on the lower end surface of the base plate, and the mounting plate has mounting holes for connecting a camera;

[0007] Clamping plates, the number of clamping plates is two, the two clamping plates form a clamping position for clamping the excavator boom, and the clamping plates are movably connected to the base plate;

[0008] A pressure plate, which is movably connected to a clamping plate, and the position of the pressure plate corresponds to that of the clamping position.

[0009] Furthermore, the base plate has a strip-shaped hole, which is arranged in a direction perpendicular to the clamping plate. The lower end of the clamping plate is fixed with a guide plate that matches the strip-shaped hole, and the guide plate is installed inside the strip-shaped hole.

[0010] Furthermore, two guide plates are fixed to the lower end of each clamping plate.

[0011] Furthermore, a baffle is fixed at the lower end of the guide plate, and the width of the baffle is greater than the width of the strip hole.

[0012] Furthermore, adjusting plates are fixed at both ends of the base plate, and adjusting threaded holes corresponding to the clamping plates are opened on the adjusting plates. Adjusting bolts are provided in the adjusting threaded holes, and the adjusting bolts are threadedly connected to the adjusting plates.

[0013] Furthermore, the pressure plate is connected via a tensioning assembly clamping plate;

[0014] The tensioning assembly includes an adjustment tube;

[0015] One end of the pressure plate is fixed with a connecting plate, and the lower end of the connecting plate is connected with a left-hand threaded column. The clamping plate is fixed with a right-hand threaded column. One end of the adjusting tube is threadedly connected to the left-hand threaded column, and the other end of the adjusting tube is threadedly connected to the right-hand threaded column.

[0016] Furthermore, the regulating tube has an insertion hole.

[0017] Furthermore, a hinge post is fixedly provided on the connecting plate, and a hinge plate is fixedly provided at the upper end of the left-hand threaded post. The hinge plate has a hinge hole that matches the hinge post. The hinge post is installed inside the hinge hole, and the hinge plate is hinged to the connecting plate through the hinge post.

[0018] The axis of the hinged post is set along the length of the strip hole.

[0019] Furthermore, an anti-slip rubber pad is fixed on the end face of the clamping plate near the clamping position.

[0020] Furthermore, the mounting hole is a through hole or a threaded hole.

[0021] Compared with the prior art, the connecting device for mounting a camera on the boom of an excavator described in this utility model has the following advantages:

[0022] (1) The connecting device for installing a camera on the boom of an excavator described in this utility model is made applicable to different models of excavators by means of a movable clamping plate and a pressure plate fixing device, which improves the applicability of the device and makes the installation and disassembly process convenient, thus improving work efficiency.

[0023] (2) The connecting device for installing a camera on the boom of an excavator described in this utility model has an inclined upper surface on the boom of some models. The device can better fit the upper surface of the boom by hinged connection between the connecting plate and the hinge plate, thus expanding the applicability of the device. Attached Figure Description

[0024] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0025] Figure 1 This is a three-dimensional structural diagram of the device in its installation state according to an embodiment of the present invention;

[0026] Figure 2 This is a three-dimensional structural diagram of the device described in an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the base plate according to an embodiment of the present utility model;

[0028] Figure 4 This is a three-dimensional structural diagram of the clamping plate described in an embodiment of the present utility model;

[0029] Figure 5 This is a three-dimensional structural diagram of the hinge plate described in an embodiment of the present utility model;

[0030] Figure 6 This is a schematic diagram of the three-dimensional structure of the pressure plate according to an embodiment of the present utility model;

[0031] Figure 7 This is a schematic diagram of the first cross-sectional structure of the device described in an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the second cross-sectional structure of the device described in an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Base plate; 2. Excavator boom; 3. Pressure plate; 4. Clamping plate; 5. Adjusting pipe; 6. Adjusting bolt; 7. Hinge plate; 8. Hydraulic cylinder; 101. Mounting plate; 102. Adjusting plate; 103. Adjusting threaded hole; 104. Strip hole; 301. Connecting plate; 302. Hinge column; 401. Guide plate; 402. Baffle; 403. Right-hand threaded column; 701. Hinge hole; 702. Left-hand threaded column. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0036] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] The inventors of this case designed an earthmoving management device, comprising a loading process monitoring device and a management platform. This hardware component includes a fleet of engineering work vehicles consisting of excavators and dump trucks, a video acquisition device installed at the central support point of the excavator's boom, a vehicle identification device installed on the dump trucks, and a sensing device installed in the excavator's cab that works in conjunction with the vehicle identification device. The video acquisition device, vehicle identification device, sensing device, and management platform are connected wirelessly. The vehicle identification device can use RFID tags or Bluetooth external tags, and the sensing device can use tablets, smartphones, or other self-developed devices.

[0040] The earthmoving management device uses Bluetooth external tags and a tablet with built-in Bluetooth functionality. The management platform binds vehicle license plates to unique tag device numbers. The tablet collects signals via Bluetooth and retrieves a vehicle tag dictionary through server communication, mapping tags to license plates. Vehicles only need to enter the work area normally. The specific implementation process is as follows: the Bluetooth search interface continuously searches for signals. Entry rules: upon detecting a new signal, license plate mapping is immediately performed and fed back to the backend, and the signal is added to the record list. Departure rules: a specified period is agreed upon, and all detected signals are added to a polling list. At the end of the period, the polling list is compared with the record list; overlaps are retained, and signals not found in the polling list are removed from the record list. The Bluetooth module is set to a sensing and recognition range of 15-20 meters, generally corresponding to at least one working vehicle and one waiting vehicle.

[0041] Video capture is achieved by installing a camera at the center support point of the excavator's boom. Excavators and transport vehicles in the convoy use Bluetooth modules for identification, entry, and exit checks. Alternatively, a rear camera can be installed at the center support point of the excavator's boom to monitor the driver's safety status. Of course, positioning devices can also be installed on the excavators or transport vehicles to obtain positioning signals, thus achieving three methods: 1. Bluetooth identification, 2. image recognition, and 3. positioning signal recognition. These three methods are cross-verified, significantly improving the system's accuracy.

[0042] like Figures 1 to 8 As shown, this utility model provides a connecting device for mounting cameras at two locations on the boom of an excavator, adapted to the aforementioned earthwork management device, comprising:

[0043] The base plate 1 has a mounting plate 101 on its lower end surface, and the mounting plate 101 has mounting holes for connecting a camera.

[0044] Clamping plate 4, there are two clamping plates 4, and the two clamping plates 4 form a clamping position for clamping the excavator boom 2. The clamping plates 4 are movably connected to the base plate 1.

[0045] Pressure plate 3 is movably connected to clamping plate 4, and the position of pressure plate 3 corresponds to the position of clamping position.

[0046] The base plate 1 has a strip-shaped hole 104, which is arranged perpendicular to the clamping plate 4. A guide plate 401 matching the strip-shaped hole 104 is fixed to the lower end of the clamping plate 4, and the guide plate 401 is installed inside the strip-shaped hole 104. Two guide plates 401 are fixed to the lower end of each clamping plate 4, which improves the stability of the clamping plate 4 during movement. A baffle 402 is fixed to the lower end of each guide plate 401, and the width of the baffle 402 is greater than the width of the strip-shaped hole 104. The baffle 402 prevents the guide plate 401 from disengaging from the strip-shaped hole 104.

[0047] Adjusting plates 102 are fixed at both ends of the base plate 1. Adjusting plates 102 have adjusting threaded holes 103 corresponding to clamping plates 4. Adjusting bolts 6 are provided in the adjusting threaded holes 103. The adjusting bolts 6 are threadedly connected to the adjusting plates 102. When the adjusting bolts 6 are rotated in the tightening direction, the adjusting bolts 6 drive the clamping plates 4 to clamp the two sides of the excavator boom 2, which improves the ease of installation of the device. Each clamping plate 4 has an adjusting bolt 6 on the end face away from the clamping position.

[0048] The pressure plate 3 is connected to the clamping plate 4 via a tensioning assembly; the tensioning assembly includes an adjusting tube 5; a connecting plate 301 is fixedly provided at one end of the pressure plate 3, and a left-hand threaded post 702 is connected to the lower end of the connecting plate 301; a right-hand threaded post 403 is fixedly provided on the clamping plate 4; one end of the adjusting tube 5 is threadedly connected to the left-hand threaded post 702, and the other end of the adjusting tube 5 is threadedly connected to the right-hand threaded post 403; the distance between the pressure plate 3 and the base plate 1 can be adjusted by rotating the adjusting tube 5, further fixing the device.

[0049] The regulating tube 5 has a socket, which facilitates the rotation of the regulating tube 5.

[0050] A hinge post 302 is fixedly mounted on the connecting plate 301, and a hinge plate 7 is fixedly mounted on the upper end of the left-hand threaded post 702. The hinge plate 7 has a hinge hole 701 that matches the hinge post 302. The hinge post 302 is installed inside the hinge hole 701, and the hinge plate 7 is hinged to the connecting plate 301 through the hinge post 302. The axis of the hinge post 302 is set along the length direction of the strip hole 104. The upper end face of the boom 2 of some excavator models is an inclined surface. The hinged connection between the connecting plate 301 and the hinge plate 7 can better fit the upper end face of the excavator boom 2, thus expanding the applicability of the device.

[0051] The distance between the two pressure plates 3 is greater than the diameter of the hydraulic cylinder 8 to prevent the pressure plates 3 from interfering with the operation of the hydraulic cylinder 8.

[0052] An anti-slip rubber pad is fixed on the end face of the clamping plate 4 near the clamping position, which increases the friction between the clamping plate 4 and the excavator boom 2.

[0053] The mounting hole can be a through hole or a threaded hole. The base of the camera can be connected to the threaded hole of the mounting plate 101 by connecting bolts, or the base can be locked by connecting bolts through the through hole and then threadedly connected to a nut.

[0054] Work process:

[0055] When implementing this solution, the lower end face of the base plate 1 is aligned with the lower end face of the excavator boom 2. Tightening the two adjusting bolts 6 drives the two clamping plates 4 to move towards each other, clamping the two sides of the excavator boom 2. Then, rotating the two adjusting pipes 5 drives the pressure plate 3 to move downward, pressing the upper end face of the excavator boom 2, further improving the stability of the device. Through the movable clamping plate 4 and pressure plate 3 fixing device, the device is suitable for different models of excavators, improving the applicability of the device. At the same time, the installation and disassembly process is convenient, improving work efficiency.

[0056] The camera is mounted at the support point of the excavator's boom, a location that also serves as a spotlight installation point. This ensures camera stability and provides sufficient light for both daytime and nighttime operations. The camera is bound to the excavator, and the binding relationship table is stored in the management platform. After installation, the camera connects to the router's intranet. The camera contains an algorithm module, and communication between the camera and the router enables algorithmic recognition and tablet interaction via the intranet. The camera's core functions are: residual material detection, full load detection, and bucket counting.

[0057] The camera includes a video acquisition module, a processing module (algorithm module), and a communication module. The processing module, also known as the algorithm module, typically captures image or video data and transmits it to the backend for computation. However, the working environment of this invention is uncertain and generally undeveloped, with poor network conditions often resulting in severe latency. Therefore, edge computing is adopted, where the camera has a built-in algorithm module that processes data while acquiring it. The video acquisition module is an edge computing box that captures video and images from the scene, providing each frame (full frame or extracted frames), segmenting and recognizing them, and comparing them with predefined images to achieve the corresponding judgment structure. Keyframes can be predefined, such as full frames, empty frames, half frames, or special actions. After obtaining the images, they are compared with the model to determine the matching degree, approximate matching ratio, and consistency. After training, the model is obtained, developed on a PC, converted, and ported to the camera to adapt to the mobile environment. After model conversion, optimization is required, such as determining whether to use full-frame or extracted frame acquisition, and adapting the program. The model is related to the amount of data captured. The processing module (algorithm module) includes communication and computing functions. It receives instructions from other devices, allowing external devices to instruct the camera to perform actions. The instruction receiving module receives instructions from external devices. The instruction sending module, after receiving instructions, sends the results to the tablet or other cooperating devices. Upon camera power-on, the business processing center automatically opens. The video acquisition module includes an image capture module and a recognition module. The image capture module extracts frames (full frames or extracted frames) from the camera's video stream, recognizes and matches each frame, and uses a trained model to identify images and perform confidence matching. The empty and full-load status of the bucket and truck bed is obtained through this process. Task flow: Upon receiving the connection instruction, the external tablet connects to the camera, obtains information through the communication module, and activates the acquired module. Subsequent tasks are initiated: residual material recognition (instruction issued by the external device), the driver confirms the work vehicle simultaneously. Full-load recognition, the driver confirms the end. The task start instruction (internal device access), indicating work is needed, is fed back to the tablet, OK. Residual material recognition is initiated, instructing the camera to identify sludge; after recognition, communication feedback is sent to the external tablet. After the external device is connected, the bucket counting algorithm enters the full-load recognition and sludge recognition phases. The bucket counting continues until the external device issues a termination command. After the external device connects, two modules are activated: Sludge and full-load images are acquired at intervals, input into the model, and corresponding calibration status data is obtained. Bucket counting is also a functional module. It is passively activated, with external notification instructing it on what operation to perform at what time. The camera does not have a single video channel; it uses two video channels: one for primary and one for secondary viewing, and another for computation.

[0058] The management platform includes a data processing module, a judgment module, a video acquisition device, a vehicle recognition device, a sensing device that works with the vehicle recognition device, and the management platform itself, all connected via wireless signals.

[0059] The tablet acts as the terminal and client, with an app installed to provide interactive functions. The camera captures video streams and images, performs local processing via an algorithm module, and then interacts with the tablet through a router. The tablet then interacts with the management platform. While the vehicle can be equipped with RFID, connecting an external RFID tag to the tablet requires specialized technology, which is costly. Therefore, the signal sensing was modified to use the tablet's built-in Bluetooth, with the dump truck using a Bluetooth speaker tag, effectively reducing overall costs. However, RFID strength and distance are not the only influencing factors; they are affected by other factors, resulting in weak correlation and discrepancies between distance and signal strength, leading to inaccurate results. This issue can be addressed through special settings, such as increasing the RFID tag's battery level, only detecting entry without considering distance, and continuously sensing without interruption. If no tag is detected, the vehicle is notified to leave.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connecting device for mounting a camera at the boom (2) of an excavator, characterized in that, include: A base plate (1) is provided with a mounting plate (101) on its lower end surface, and the mounting plate (101) has mounting holes for connecting a camera. Clamping plate (4), there are two clamping plates (4), and the two clamping plates (4) form a clamping position for clamping the excavator boom (2). The clamping plates (4) are movably connected to the base plate (1). Pressure plate (3), which is movably connected to clamping plate (4), and the position of pressure plate (3) corresponds to the position of clamping position.

2. The connecting device for installing a camera at the boom (2) of an excavator according to claim 1, characterized in that: The base plate (1) has a strip hole (104) which is arranged in a direction perpendicular to the clamping plate (4). The lower end of the clamping plate (4) is fixed with a guide plate (401) that matches the strip hole (104). The guide plate (401) is installed on the inner side of the strip hole (104).

3. A connecting device for installing a camera at the boom (2) of an excavator according to claim 2, characterized in that: Two guide plates (401) are fixed at the lower end of each clamping plate (4).

4. A connecting device for installing a camera at the boom (2) of an excavator according to claim 2, characterized in that: A baffle (402) is fixedly provided at the lower end of the guide plate (401), and the width of the baffle (402) is greater than the width of the strip hole (104).

5. A connecting device for mounting a camera at the boom (2) of an excavator according to claim 2, characterized in that: Adjustment plates (102) are fixed at both ends of the base plate (1). The adjustment plates (102) have adjustment thread holes (103) corresponding to the clamping plate (4). Adjustment bolts (6) are provided in the adjustment thread holes (103). The adjustment bolts (6) are threadedly connected to the adjustment plates (102).

6. A connecting device for mounting a camera at the boom (2) of an excavator according to claim 1, characterized in that: The pressure plate (3) is connected by a clamping plate (4) of a tensioning assembly; The tensioning assembly includes an adjusting tube (5); One end of the pressure plate (3) is fixed with a connecting plate (301), and the lower end of the connecting plate (301) is connected with a left-hand threaded column (702). The clamping plate (4) is fixed with a right-hand threaded column (403). One end of the adjusting tube (5) is threadedly connected to the left-hand threaded column (702), and the other end of the adjusting tube (5) is threadedly connected to the right-hand threaded column (403).

7. A connecting device for mounting a camera at the boom (2) of an excavator according to claim 6, characterized in that: The regulating tube (5) has an insertion hole.

8. A connecting device for mounting a camera at the boom (2) of an excavator according to claim 6, characterized in that: A hinge post (302) is fixed on the connecting plate (301), and a hinge plate (7) is fixed on the upper end of the left-hand threaded post (702). The hinge plate (7) has a hinge hole (701) that matches the hinge post (302). The hinge post (302) is installed inside the hinge hole (701). The hinge plate (7) is hinged to the connecting plate (301) through the hinge post (302). The axis of the hinge post (302) is set along the length direction of the strip hole (104).

9. A connecting device for mounting a camera at the boom (2) of an excavator according to claim 1, characterized in that: The clamping plate (4) has an anti-slip rubber pad fixed on the end face near the clamping position.

10. A connecting device for mounting a camera at the boom (2) of an excavator according to claim 1, characterized in that: The mounting hole is a through hole or a threaded hole.

Images