Wood diameter measuring structure for feller

Abstract

The utility model provides a timber diameter measuring structure used for a feller, which belongs to the feller field and comprises a sensor magnet mounting seat, a mounting groove is arranged on the sensor magnet mounting seat, a sensor hollow shaft is arranged in the mounting groove, a mounting column is arranged in the middle of the mounting groove, and the sensor hollow shaft is arranged in the mounting column. The mounting column extends into the sensor hollow shaft, one end of the mounting column is provided with a sensor magnet, the sensor hollow shaft is provided with an angle sensor, one end of the stop positioning pin is connected to the sensor hollow shaft, and the other end of the stop positioning pin is clamped on the sensor stop seat. According to the wood diameter measuring structure, the angle sensor is matched with the end cover mounting seat, and the wood diameter measuring function can be realized only by being fixed at one end of the single-side clamping structure; the angle sensor is very small, is high in precision, is stable and reliable, occupies a small installation position, and can leave a lot of space for the design of the feller.

Description

Technical Field

[0001] This utility model relates to the field of logging machines, and in particular to a timber diameter measuring structure used in logging machines. Background Technology

[0002] Currently, logging machines typically employ a structure with associated double opening and closing angles to measure timber diameter. This involves linking the opening and closing angles to the clamping blades (or the structure that grips the timber). An encoder, essentially a sensor, converts the clamping blade's opening and closing angle information into an electrical signal, which is then transmitted to the logging machine's controller for analysis, thus obtaining the diameter of the gripped timber. This design primarily consists of an encoder, an encoder mounting base, a clamping structure, and a transmission rack (or transmission spring). These four components, installed inside the logging machine, enable diameter measurement.

[0003] Existing timber diameter measurement structures require not only the clamping structures on both sides of the logging machine, but also the design and installation of an encoder for measuring diameter, an encoder mounting base, and a transmission rack (or spring). In short, the design and installation necessitates three mounting positions, and these positions need to be linked together. This design excessively occupies the internal space of the logging machine, making it difficult to reduce the size of the machine and requiring more reinforcing ribs when welding the main frame. Furthermore, considering the need to avoid other functional structural components, significant design trade-offs arise in disassembly, installation, and maintenance. Therefore, a timber diameter measurement structure for logging machines is needed. Utility Model Content

[0004] The purpose of this utility model is to provide a timber diameter measuring structure for use in logging machines, thereby solving the technical problem that existing timber diameter measuring structures occupy too much internal space in logging machines.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A timber diameter measuring structure for a logging machine includes a sensor magnet mounting base with a mounting groove. A hollow sensor shaft is disposed within the mounting groove. A mounting post is disposed in the middle of the mounting groove, extending into the interior of the hollow sensor shaft. A sensor magnet is disposed at one end of the mounting post. An angle sensor is disposed on the hollow sensor shaft. One end of a stop positioning pin is connected to the hollow sensor shaft, and the other end of the stop positioning pin is engaged with a sensor stop seat.

[0007] Furthermore, a grease fitting is threaded onto one side of the sensor magnet mounting base, and the sensor magnet mounting base is connected to the logging machine clamp via a first internal hexagonal head bolt.

[0008] Furthermore, an elastic retaining ring for holes is provided in the mounting groove, which fixes the hollow shaft of the sensor in the mounting groove.

[0009] Furthermore, the sensor hollow shaft includes a first hollow shaft and a second hollow shaft, one end of the first hollow shaft is connected to one end of the second hollow shaft, the inner diameters of the first hollow shaft and the second hollow shaft are the same, and the outer diameter of the first hollow shaft is larger than the outer diameter of the second hollow shaft.

[0010] Furthermore, the other end of the second hollow shaft is connected to a third hollow shaft. A notch is provided on one side of the third hollow shaft. The inner diameter of the third hollow shaft is larger than the inner diameter of the second hollow shaft. The outer diameter of the third hollow shaft is the same as the outer diameter of the second hollow shaft. The first hollow shaft, the second hollow shaft, and the third hollow shaft are integrally formed.

[0011] Furthermore, the sensor magnet is disposed inside the second hollow shaft, and the sensor magnet is connected to the mounting post by a second internal hexagonal head bolt.

[0012] Furthermore, the angle sensor is disposed inside the third hollow shaft, and the angle sensor is connected to the second hollow shaft by a third internal hexagonal head bolt, with one end of the angle sensor extending out of the notch of the third hollow shaft.

[0013] Furthermore, the sensor stop seat is configured as a U-shaped structure, with a slot on one side and the other side connected to the logging machine main frame via a fourth hexagon socket head cap screw. A flat washer is provided between the fourth hexagon socket head cap screw and the sensor stop seat.

[0014] Furthermore, the threaded end of the stop positioning pin is threadedly connected to the third hollow shaft, and the other end of the stop positioning pin is provided with an O-ring rubber seal, which is engaged in the groove.

[0015] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0016] 1. The timber diameter measuring structure of this utility model uses an angle sensor in conjunction with an end cap mounting base. It only needs to be fixed to one end of a single-sided clamping structure to realize the timber diameter measuring function. The angle sensor is very small, highly accurate, stable and reliable, and occupies little space, which can save a lot of space for logging machine design.

[0017] 2. In terms of maintenance and repair, the timber diameter measuring structure of this utility model can be disassembled by simply removing four bolts. It can be replaced or inspected, which greatly saves maintenance and repair costs and is easy to install and maintain. Because its structure is integrated in one position, it avoids linkage with other positions and greatly reduces the auxiliary structure.

[0018] 3. After the timber diameter measuring structure of this utility model is installed on the logging machine, the angle sensor of the timber diameter measuring structure collects the rotation angle changes of the clamping structure and transmits them to the outer panel controller. The diameter of the timber can be measured by the controller. It has the advantages of easy installation, easy debugging and easy maintenance, which makes it worry-free and labor-saving for operators in the harsh environment of forest operation, thereby saving time and costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the wood diameter measuring structure of this utility model;

[0020] Figure 2 This is an exploded view of the timber diameter measuring structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the sensor magnet mounting base of this utility model;

[0022] Figure 4 This is a schematic diagram of the hollow shaft of the sensor of this utility model;

[0023] Figure 5 This is a schematic diagram of the wood diameter measuring structure of this utility model installed on a logging machine.

[0024] In the attached diagram, 1-Grease nipple, 2-First hexagon socket head cap screw, 3-Sensor magnet mounting base, 31-Mounting groove, 32-Mounting post, 4-Sensor hollow shaft, 41-First hollow shaft, 42-Second hollow shaft, 43-Third hollow shaft, 44-Notch, 5-Elastic retaining ring for the hole, 6-Sensor magnet, 7-Second hexagon socket head cap screw, 8-Angle sensor, 9-Third hexagon socket head cap screw, 10-Stop locating pin, 11-O-ring seal, 12-Fourth hexagon socket head cap screw, 13-Flat washer, 14-Sensor stop seat, 15-Slot, 16-Logger clamp, 17-Logger main frame. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of this utility model, and these aspects can be achieved even without these specific details.

[0026] like Figure 1-3 As shown, a timber diameter measuring structure for a logging machine includes a sensor magnet mounting base 3. The sensor magnet mounting base 3 has a mounting groove 31, within which a hollow sensor shaft 4 is housed. A mounting post 32 is located in the middle of the mounting groove 31, extending into the interior of the hollow sensor shaft 4. A sensor magnet 6 is mounted at one end of the mounting post 32. An angle sensor 8 is mounted on the hollow sensor shaft 4 and connected to an external controller. The angle sensor 8 collects data on the rotational angle changes of the clamping structure and transmits this data to the controller. The controller processes this data to determine the timber diameter. One end of a stop pin 10 is connected to the hollow sensor shaft 4, and the other end is engaged with a sensor stop seat 14. After installation on a logging machine, this timber diameter measuring structure uses the angle sensor 8 to collect data on the rotational angle changes of the clamping structure and transmits this data to the external controller. The controller then processes this data to measure the timber diameter. This design offers advantages such as ease of installation, easy debugging, and convenient maintenance.

[0027] like Figure 2 and Figure 5 As shown, a grease nipple 1 is threaded onto one side of the sensor magnet mounting base 3. The sensor magnet mounting base 3 is connected to the logging machine clamp 16 via a first hexagon socket head cap screw 2. Specifically, it is installed at the rotating shaft position of the clamp 16, which is existing technology. The first hexagon socket head cap screw 2 is an M6x16 hexagon socket head cap screw. The sensor magnet mounting base 3 is fixed to the pre-drilled mounting screw hole on the clamp 16 via the M6x16 hexagon socket head cap screw. During maintenance, the measuring structure can be disassembled simply by removing the first hexagon socket head cap screw 2, allowing for replacement and repair, greatly saving maintenance costs and facilitating installation and maintenance. A retaining ring 5 is provided in the mounting groove 31 to fix the hollow sensor shaft 4 within the mounting groove 31. The retaining ring 5 is used to secure the hollow sensor shaft 4 within the groove of the sensor magnet mounting base 3, preventing it from coming out.

[0028] like Figure 4As shown, the sensor hollow shaft 4 includes a first hollow shaft 41 and a second hollow shaft 42. One end of the first hollow shaft 41 is connected to one end of the second hollow shaft 42. The inner diameters of the first hollow shaft 41 and the second hollow shaft 42 are the same, while the outer diameter of the first hollow shaft 41 is larger than that of the second hollow shaft 42. The first hollow shaft 41 is used for fixing in the mounting groove 31, and the second hollow shaft 42 is used to connect to the angle sensor 8. The other end of the second hollow shaft 42 is connected to a third hollow shaft 43. A notch 44 is provided on one side of the third hollow shaft 43. The inner diameter of the third hollow shaft 43 is larger than that of the second hollow shaft 42, and the outer diameter of the third hollow shaft 43 is the same as that of the second hollow shaft 42. The first hollow shaft 41, the second hollow shaft 42, and the third hollow shaft 43 are integrally formed.

[0029] In this embodiment of the invention, the sensor magnet 6 is disposed inside the second hollow shaft 42, and is connected to the mounting post 32 via a second hexagon head bolt 7. The second hexagon head bolt 7 is an M3x8 hexagon head bolt, used to mount the sensor magnet 6 onto the mounting post 32 of the sensor magnet mounting base 3. The angle sensor 8 is disposed inside the third hollow shaft 43, and is connected to the second hollow shaft 42 via a third hexagon head bolt 9. One end of the angle sensor 8 extends out of the notch 44 of the third hollow shaft 43. Both the sensor magnet 6 and the angle sensor 8 are disposed inside the sensor hollow shaft 4. Because their structures are all integrated in the same location, linkage with other locations is avoided, greatly reducing auxiliary structures. The third hexagon head bolt 9 is an M4x16 hexagon head bolt, used to mount the angle sensor 8 onto the sensor hollow shaft 4.

[0030] like Figure 2 and Figure 5As shown, the sensor stop seat 14 is configured with a U-shaped structure. One side of the sensor stop seat 14 has a slot 15, and the other side is connected to the logging machine main frame 17 via a fourth hexagon socket head cap screw 12. A flat washer 13 is provided between the fourth hexagon socket head cap screw 12 and the sensor stop seat 14. The logging machine main frame 17 is existing technology. The fourth hexagon socket head cap screw 12 is an M8x20 hexagon socket head cap screw. Using the M8x20 hexagon socket head cap screw and the flat washer 13 to install the sensor stop seat 14 on the logging machine main frame 17 allows for easy maintenance and repair. During maintenance, only the fourth hexagon socket head cap screw 12 needs to be removed to disassemble the measuring structure for replacement or repair, greatly saving maintenance costs and facilitating installation and maintenance. The threaded end of the stop positioning pin 10 is threadedly connected to the third hollow shaft 43, and the other end of the stop positioning pin 10 is provided with an O-ring rubber seal 11, which is engaged in the groove 15. Tighten the threaded end of the stop positioning pin 10 into the threaded hole of the sensor hollow shaft 4; align the stop positioning pin 10 with the groove 15 of the sensor stop seat 14, adjust the spacing, and the assembly is complete.

[0031] Measurement process

[0032] When the logger's blades grip the log, the blades will change angle due to the gripping action. At this time, the angle sensor installed at the position of the blades' rotation axis will collect the angle change data in real time. This data will be converted into a 0-5V voltage analog signal by the angle sensor, and then the signal will be transmitted to the logger system. The logger system will calculate the diameter based on the voltage signal and finally transmit the diameter data to the excavator's display screen, thus completing the measurement of the log diameter.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A timber diameter measuring structure used in a logging machine, characterized in that: The utility model provides a sensor magnet mounting seat (3) is provided with the installation groove (31) on it, the sensor hollow shaft (4) is provided in the installation groove (31), the middle part of installation groove (31) is provided with the installation column (32), the installation column (32) extends to the inside of sensor hollow shaft (4), one end of installation column (32) is provided with sensor magnet (6), sensor hollow shaft (4) is provided with angle sensor (8), one end of stop positioning pin (10) is connected on sensor hollow shaft (4), the other end of stop positioning pin (10) is clamped on sensor stop seat (14).

2. The wood diameter measuring structure for use in a log harvester according to claim 1, characterized in that: The utility model discloses a sensor magnet mounting seat (3) is provided with grease nipple (1) on one side and is connected with the wood cutting machine clamp cutter (16) through the first internal hexagonal head bolt (2).

3. The wood diameter measuring structure for use in a log harvester according to claim 1, characterized in that: The installation groove (31) is provided with elastic check ring (5) for fixing the sensor hollow shaft (4) in the installation groove (31).

4. The wood diameter measuring structure for use in a log harvester according to claim 1, characterized in that: The sensor hollow shaft (4) comprises a first hollow shaft (41) and a second hollow shaft (42), one end of the first hollow shaft (41) is connected with one end of the second hollow shaft (42), the inner diameters of the first hollow shaft (41) and the second hollow shaft (42) are the same, and the outer diameter of the first hollow shaft (41) is larger than that of the second hollow shaft (42).

5. The wood diameter measuring structure for use in a log harvester according to claim 4, characterized in that: The other end of the second hollow shaft (42) is connected with a third hollow shaft (43), one side of the third hollow shaft (43) is provided with a notch (44), the inner diameter of the third hollow shaft (43) is larger than that of the second hollow shaft (42), the outer diameter of the third hollow shaft (43) is the same as that of the second hollow shaft (42), and the first hollow shaft (41), the second hollow shaft (42) and the third hollow shaft (43) are integrally formed.

6. The wood diameter measuring structure for use in a log harvester according to claim 1, characterized in that: The sensor magnet (6) is arranged in the second hollow shaft (42), and the sensor magnet (6) is connected with the installation column (32) through the second internal hexagonal head bolt (7).

7. The wood diameter measuring structure for use in a log harvester according to claim 1, characterized in that: The angle sensor (8) is arranged in the third hollow shaft (43), and the angle sensor (8) is connected with the second hollow shaft (42) through the third internal hexagonal head bolt (9), and one end of the angle sensor (8) extends out of the notch (44) of the third hollow shaft (43).

8. The wood diameter measuring structure for use in a log harvester according to claim 1, characterized in that: The sensor stop seat (14) is arranged in a U-shaped structure, one side of the sensor stop seat (14) is provided with a clamping groove (15), the other side of the sensor stop seat (14) is connected with the wood cutting machine main frame (17) through the fourth internal hexagonal head bolt (12), and a flat washer (13) is arranged between the fourth internal hexagonal head bolt (12) and the sensor stop seat (14).

9. The wood diameter measuring structure for use in a log harvester according to claim 1, characterized in that: The threaded end of the stop positioning pin (10) is threadedly connected to the third hollow shaft (43), and the other end of the stop positioning pin (10) is provided with an O-shaped rubber sealing ring (11) clamped in the clamping groove (15).

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