An apparatus for detecting a dip angle of an excavator

Abstract

The utility model discloses a kind of dozer pitch angle detection devices, including discharge arm, rack platform, inclination sensor, positioning mechanism, bolt-screw hole structure, the rack platform is fixedly installed on the discharge arm by bolt-screw hole structure, the inclination sensor is installed on the rack platform by positioning mechanism, the inclination sensor is connected with general control cabinet electric telecommunication. The function of the utility model is to reduce or avoid the deformation of machine shell when calibration by rack platform, positioning mechanism, improve its calibration accuracy, and the precision of adjustment and calibration is guaranteed and the vibration of inclination sensor machine shell is reduced by the design of scale and shock-absorbing spring.

Description

Technical Field

[0001] This utility model patent belongs to the technical field of pitch detection equipment for dumping equipment, and specifically relates to a pitch angle detection device for dumping machines. Background Technology

[0002] Existing soil dumping equipment uses angle encoders for precise positioning during elevation detection. However, this method suffers from the problem of requiring rotational positioning, coupled with the harsh outdoor working environment that easily accumulates mud and sand. This leads to inaccurate detection, consequently affecting the determination of the discharge angle and the process layout.

[0003] Secondly, using an angle encoder for detection is cumbersome to maintain. Replacing spare parts requires specialized software for IP settings and parameter calibration, and the entire software is in English, increasing the difficulty for mine maintenance personnel.

[0004] For the same service life, angle encoders are more expensive than tilt sensors, which is detrimental to cost control. However, the conventional method of installing tilt sensors involves fixing them to the discharge arm of a dumper using a matrix of four bolt-and-screw hole structures, then adjusting the bolts for positioning. This method has several drawbacks: First, because the bolt-and-screw hole structure is fixedly connected to the bottom of the tilt sensor, adjusting any bolt will pull on the bottom of the tilt sensor housing. While this may pull the sensor to one side, it also causes deformation of the housing. Over time, this deformation will affect the measurement accuracy of the tilt sensor. Second, the discharge arm inevitably generates vibrations during operation. Repeated vibrations over a long period may cause the bolt-and-screw hole structure to loosen or break, leading to displacement of the original reference and affecting the measurement accuracy of the tilt sensor.

[0005] Therefore, this paper proposes a device for detecting the pitch angle of a dumping machine. Utility Model Content

[0006] To address the aforementioned issues, this utility model aims to provide a pitch angle detection device for a spoil heap. By using a frame platform and positioning and aligning mechanism, it reduces or avoids deformation of the housing during calibration, thereby improving calibration accuracy. Furthermore, the design of the scale and shock-absorbing springs ensures the precision of the adjustment and reduces the vibration experienced by the tilt sensor housing.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a pitch angle detection device for a dumping machine, comprising a dumping arm, a frame platform, a tilt sensor, a positioning and aligning mechanism, and a bolt-and-screw hole structure. The frame platform is fixedly installed on the dumping arm through the bolt-and-screw hole structure. The tilt sensor is installed on the frame platform through the positioning and aligning mechanism. The tilt sensor is electrically connected to the main control cabinet.

[0008] Preferably, the frame platform is shaped like a 7, with its vertical side attached to the side of the discharge arm and fixedly installed on the discharge arm by a bolt-screw hole structure. Its horizontal side is provided with rod holes that pass through vertically in a matrix, and a shaft hole that passes through vertically is provided at the center of the horizontal side.

[0009] Preferably, a positioning sleeve and a limiting sleeve are fixedly installed on the bottom surface of the tilt sensor housing, respectively, corresponding to the rod hole and the shaft hole. A strip level is installed on the front and left sides of the tilt sensor housing.

[0010] Preferably, the positioning and locating mechanism further includes a positioning rod, a rod sleeve, a rod hole, and a limiting tie rod. The rod sleeve is located below the rod hole on the horizontal side of the frame platform, and the rod sleeve also has the same rod hole. The positioning rod is movably installed on the frame platform, and the limiting tie rod is slidably installed in the shaft hole on the horizontal side of the frame platform, and its top end is connected to the limiting sleeve through a universal ball joint structure.

[0011] Preferably, the positioning rod further includes a lead screw, a positioning head, a positioning groove, a scale, and an anti-slip cap. The lead screw is movably installed in the rod hole, and the positioning head is rotatably installed at the top of the lead screw. The positioning head is slidably installed in the positioning groove above the rod hole. The positioning head has a scale on its side, and the bottom of the rod has an anti-slip cap for turning.

[0012] Preferably, the bottom end of the limiting rod is provided with a base, and a shock-absorbing spring is provided between the upper side of the base and the lower side of the horizontal edge of the frame platform.

[0013] The beneficial effects of this utility model are:

[0014] Compared to welding a steel plate, the 7-type frame platform in this structure can be installed on the discharge arm more stably and quickly. The positioning sleeve and limit sleeve designed at the bottom of the housing can prevent the tilt sensor from shifting or tilting on the positioning rod due to the continuous vibration generated during the operation of the discharge arm. The design of the bar level can help to assist in the observation when positioning and aligning the tilt sensor.

[0015] The positioning and calibrating mechanism can pull the tilt sensor housing downwards using the limit rods, and then lift it upwards from all sides of the bottom of the tilt sensor housing by adjusting the positioning rods, thus improving its calibration accuracy. Next, the bar level on the tilt sensor can be used as an auxiliary reference for sensor calibration, further reducing the deformation caused by slight adjustments to any positioning rod. The scale on the positioning head ensures the accuracy of the calibration, and the anti-slip cap design facilitates user rotation of the lead screw. The shock-absorbing spring design is designed to tighten the tilt sensor housing when the discharge arm experiences excessive vibration, thereby reducing the vibration experienced by the tilt sensor housing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0017] Figure 1 This is the front view of the present invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 This utility model Figure 2 Isometric view and enlarged section view of section A;

[0020] Figure 4 This is a flowchart illustrating the internal logic of the program in this utility model.

[0021] Figure 5 This is a diagram showing the overall test results of Embodiment 2 of this utility model;

[0022] Figure 6 This is a diagram showing the test results of the internal program in Embodiment 2 of this utility model;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Discharge arm; 2. Frame platform; 3. Tilt sensor; 4. Bolt-screw hole structure; 5. Rod hole; 6. Shaft hole; 7. Positioning sleeve; 8. Limiting sleeve; 9. Bar level; 10. Positioning rod; 11. Rod sleeve; 12. Limiting tie rod; 13. Universal ball joint structure; 14. Lead screw; 15. Positioning head; 16. Positioning groove; 17. Scale; 18. Anti-slip cap; 19. Base; 20. Shock-absorbing spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Example 1

[0026] like Figures 1 to 3 As shown, the existing technology in this embodiment has the following problems: The inventors found that maintenance is cumbersome when using angle encoders for detection. Replacing spare parts requires dedicated software for IP settings and parameter calibration, and the entire software is in English, increasing the difficulty for mine maintenance personnel. Furthermore, conventional tilt sensor installation methods can cause housing deformation, affecting the measurement accuracy of the tilt sensor; secondly, vibrations generated during the operation of the discharge arm may cause the bolt-hole structure to loosen or break, leading to displacement of the original reference and thus affecting the measurement accuracy of the tilt sensor.

[0027] Therefore, the inventor provides a pitch angle detection device for a dumping machine, including a discharge arm 1, a frame platform 2, a tilt sensor 3, a positioning and aligning mechanism, and a bolt-and-screw hole structure 4. The frame platform 2 is fixedly installed on the discharge arm 1 through the bolt-and-screw hole structure 4. The tilt sensor 3 is installed on the frame platform 2 through the positioning and aligning mechanism. The tilt sensor 3 is electrically connected to the main control cabinet.

[0028] Its effect and principle are as follows: Compared with welding a steel plate, the frame platform 2 of type 7 in this structure can install the platform on the discharge arm 1 more stably and quickly.

[0029] The design of the positioning sleeve 7 and the limiting sleeve 8 at the bottom of the tilt sensor 3 housing can prevent the tilt sensor 3 from being displaced or tilted on the positioning rod 10 due to the continuous vibration generated during the operation of the discharge arm 1. The design of the bar level 9 can play an auxiliary role in locating and aligning the tilt sensor 3.

[0030] The positioning and calibrating mechanism can pull the tilt sensor 3 downward from the bottom of the housing by using the universal ball joint structure 13 at the top of the limiting rod 12 and the lower side of the limiting sleeve 8. Then, by adjusting the positioning rod 10 upward, it can be pushed upward from all sides of the bottom of the tilt sensor 3 housing, improving its calibration accuracy. Next, the bar level 9 on the tilt sensor 3 can be used as an auxiliary reference to calibrate the sensor. During the calibration process, the universal ball joint structure 13 below the center of the bottom of the tilt sensor 3 housing can greatly reduce the deformation caused to the housing when fine-tuning any positioning rod 10. The scale 17 on the positioning head 15 ensures the accuracy of the adjustment. The anti-slip cap 18 is designed to facilitate the user to rotate the lead screw 14. The shock-absorbing spring 20 is designed to tighten the tilt sensor 3 housing and at the same time reduce the vibration experienced by the tilt sensor 3 housing.

[0031] Furthermore, the frame platform 2 is shaped like a 7, with its vertical side attached to the side of the discharge arm 1 and fixedly installed on the discharge arm 1 by a bolt-screw hole structure 4. Its horizontal side is provided with a matrix of rod holes 5 that pass through vertically, and a shaft hole 6 that passes through vertically is provided at the center of the horizontal side. Compared with welding a steel plate, the 7-shaped frame platform 2 can install the platform on the discharge arm 1 more stably and quickly.

[0032] Furthermore, a positioning sleeve 7 and a limiting sleeve 8 are fixedly installed on the bottom surface of the tilt sensor 3 housing, respectively corresponding to the rod hole 5 and the shaft hole 6. A strip level 9 is installed on the front and left sides of the tilt sensor 3 housing. The design of the positioning sleeve 7 and the limiting sleeve 8 in this structure can prevent the tilt sensor 3 from being displaced or tilted on the positioning rod 10 due to the continuous vibration generated during the operation of the discharge arm 1. The design of the strip level 9 can help to assist in the observation when positioning and locating the tilt sensor 3.

[0033] Furthermore, the positioning and calibrating mechanism also includes a positioning rod 10, a rod sleeve 11, a rod hole 5, and a limiting pull rod 12. The rod sleeve 11 is located below the rod hole 5 on the horizontal side of the frame platform 2, and the rod sleeve 11 also has the same rod hole 5. The positioning rod 10 is movably mounted on the frame platform 2, and the limiting pull rod 12 is slidably mounted in the shaft hole 6 on the horizontal side of the frame platform 2, and its top end is connected to the limiting sleeve 8 through a universal ball joint structure 13. This structure is designed so that the limiting pull rod 12 can be pulled down from the bottom of the tilt sensor 3 housing by the universal ball joint structure 13 on the bottom side of the limiting sleeve 8. Then, by adjusting the positioning rod 10 upward, the tilt sensor 3 housing is lifted upward from all sides of the bottom, improving its calibration accuracy. Then, the bar level 9 on the tilt sensor 3 can be used as an auxiliary reference to calibrate the sensor. During the calibration process, the universal ball joint structure 13 below the center of the bottom of the tilt sensor 3 housing can greatly reduce the deformation caused to the housing when fine-tuning any positioning rod 10.

[0034] Furthermore, the positioning rod 10 also includes a lead screw 14, a positioning head 15, a positioning groove 16, a scale 17, and an anti-slip cap 18. The lead screw 14 is movably installed in the rod hole 5. The positioning head 15 is rotatably installed on the top of the lead screw 14. The positioning head 15 is slidably installed in the positioning groove 16 above the rod hole 5. The scale 17 is provided on the side of the positioning head 15. The bottom of the rod is provided with an anti-slip cap 18 for turning. In this structure, the design of the top of the lead screw 14 rotatably connecting to the positioning head 15 ensures that the positioning head 15 does not rotate with the lead screw 14, but only moves up and down in the positioning groove 16. This allows the user to have a good view of the scale 17 on the positioning head 15, thus ensuring the accuracy of the adjustment. The design of the anti-slip cap 18 also makes it easy for the user to rotate the lead screw 14.

[0035] Furthermore, a base 19 is provided at the bottom end of the limiting rod 12, and a shock-absorbing spring 20 is provided between the upper side of the base 19 and the lower side of the horizontal side of the frame platform 2. This structure is designed so that when the discharge arm 1 generates excessive vibration, the shock-absorbing spring 20 can tighten the housing of the tilt sensor 3, and at the same time reduce the vibration of the housing of the tilt sensor 3, thereby avoiding excessive vibration as in the prior art that causes cracks in the rigid connection structure and damage. Example 2

[0036] Based on the above embodiments, the inventors have made the following practical applications:

[0037] 1. Select a horizontal reference point of the discharge arm of the soil dumping equipment as the reference point of the tilt sensor. Install a horizontal frame platform at this reference point to install the tilt sensor. When installing the tilt sensor, leave four nuts below or set up a positioning and aligning mechanism to adjust the level.

[0038] 2. Connect the tilt sensor to the main control cabinet and select the Y-axis as the reference point for material feeding based on the actual situation on site;

[0039] 3. The parameters calibrated and fed back within the device's program are linked to the touchscreen for easy user identification, and the specific internal program logic is outlined as follows: Figure 4 As shown;

[0040] 4. Finally, the entire machine was tested, and the displayed values ​​matched the values ​​measured internally by the program, meeting the requirements. Specifically, as follows... Figures 5 to 6 As shown in the image.

[0041] The tilt sensor operates on the following principle: its detection range is -15° to 15°. The detection logic works by determining the capacitance value based on the overlap between the central mass block and the capacitor's electrodes when the block tilts. The angle is calculated from the capacitance value, and a 4-20mA current is generated using the angle and a built-in algorithm. The PLC collects this 4-20mA current, performs calculations to eliminate errors, and then calculates the final angle.

[0042] The working principle of this utility model is as follows: Compared with welding a steel plate, the type 7 frame platform in this structure can more stably and quickly install the platform on the discharge arm; this structure can pull the tilt sensor housing downward from the bottom through the universal ball joint structure at the top of the limiting rod and the lower side of the limiting sleeve, and then lift it upward from all sides of the bottom of the tilt sensor housing by adjusting the positioning rod upward. Then, the sensor can be calibrated by referring to the bar level on the tilt sensor. During the calibration process, the universal ball joint structure below the center of the bottom of the tilt sensor housing can greatly reduce the need for fine-tuning any one of the rods. The deformation of the housing caused by the positioning rod is mitigated. The design of the positioning head, with its rotating connection at the top of the lead screw, ensures that the positioning head does not rotate with the lead screw, but only moves up and down within the positioning groove. This allows the user to have a good view of the scale on the positioning head, thus ensuring the accuracy of the adjustment. The anti-slip cap design facilitates the user's rotation of the lead screw. This structure is designed so that when the discharge arm experiences excessive vibration, the damping spring can tighten the tilt sensor housing, reducing the vibration experienced by the tilt sensor housing and preventing excessive vibration from causing cracks in the rigid connection structure, as is common in existing technologies.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for detecting the pitch angle of a dump truck, characterized in that: The system includes a discharge arm (1), a frame platform (2), an inclination sensor (3), a positioning and aligning mechanism, and a bolt-and-screw hole structure (4). The frame platform (2) is fixedly installed on the discharge arm (1) through the bolt-and-screw hole structure (4). The inclination sensor (3) is installed on the frame platform (2) through the positioning and aligning mechanism. The inclination sensor (3) is electrically connected to the main control cabinet.

2. The device for detecting the pitch angle of a dumping machine according to claim 1, characterized in that: The frame platform (2) is shaped like a 7. Its vertical side is attached to the side of the discharge arm (1) and is fixedly installed on the discharge arm (1) by a bolt-screw hole structure (4). Its horizontal side is provided with rod holes (5) that pass through vertically, and a shaft hole (6) that passes through vertically is provided at the center of the horizontal side.

3. The device for detecting the pitch angle of a dumping machine according to claim 1, characterized in that: The tilt sensor (3) housing is fixedly installed with a positioning sleeve (7) and a limiting sleeve (8) respectively, corresponding to the rod hole (5) and the shaft hole (6). The tilt sensor (3) housing is installed with a strip level (9) on the front and left sides respectively.

4. The device for detecting the pitch angle of a dumping machine according to claim 1, characterized in that: The positioning and locating mechanism further includes a positioning rod (10), a rod sleeve (11), a rod hole (5), and a limiting pull rod (12). The rod sleeve (11) is located below the rod hole (5) on the horizontal side of the frame platform (2), and the rod sleeve (11) also has the same rod hole (5). The positioning rod (10) is movably installed on the frame platform (2), and the limiting pull rod (12) is slidably installed in the shaft hole (6) on the horizontal side of the frame platform (2), and its top end is connected to the limiting sleeve (8) through a universal ball joint structure (13).

5. The device for detecting the pitch angle of a dumping machine according to claim 4, characterized in that: The positioning rod (10) also includes a lead screw (14), a positioning head (15), a positioning groove (16), a scale (17), and an anti-slip cap (18). The lead screw (14) is movably installed in the rod hole (5). The positioning head (15) is rotatably installed at the top of the lead screw (14). The positioning head (15) is slidably installed in the positioning groove (16) above the rod hole (5). The positioning head (15) has a scale (17) on its side. The bottom of the positioning rod has an anti-slip cap (18) for turning.

6. The device for detecting the pitch angle of a dumping machine according to claim 4, characterized in that: The bottom end of the limiting rod (12) is provided with a base (19), and a shock-absorbing spring (20) is provided between the upper side of the base (19) and the lower side of the horizontal side of the frame platform (2).

Images