Electric lumbering wedge

Abstract

The utility model discloses an electric felling wedge. The felling wedge comprises a main felling wedge body and a sub felling wedge body, a notch used for containing the sub felling wedge body is formed in the front side of the main felling wedge body, and the main felling wedge body is provided with a driving mechanism used for driving the sub felling wedge body to forwards stretch out of / retract into the notch. The automatic felling device can automatically move towards the inner side of a crack of a trunk during felling, a felling worker does not need to perform close operation in the whole felling process, potential safety hazards are eliminated, operation is simple, and time and labor are saved.

Description

Technical Field

[0001] This utility model relates to the field of logging tools, and in particular to an electric logging wedge. Background Technology

[0002] Currently, chainsaws are the most commonly used logging tool. However, it is dangerous for loggers to operate chainsaws close to the ground, and it is impossible to control the direction of the falling trees, posing a safety hazard to pedestrians and surrounding buildings. To solve these problems, electric logging wedges have been invented. Using electric logging wedges can control the direction of the falling trees, and loggers do not need to be close to the ground to cut trees, thus improving logging safety.

[0003] Existing electric logging wedges consist of a wedge with a check valve on its top surface and a propulsion device. In use, loggers first use an electric saw to cut a slit in the tree trunk, insert the wedge into the slit, and activate the propulsion device. The device pushes the wedge deeper into the slit, widening it. When the wedge reaches a certain depth, the tree falls in a predetermined direction, completing the felling. However, when using existing electric logging wedges to fell large trees, due to the large trunk diameter, even when the propulsion device pushes the wedge to its maximum position within the slit, it may still be insufficient to fell the large tree. In this case, loggers need to insert ordinary wedges into the slit for support, reset the electric logging wedge, push it to the innermost part of the slit, and restart the electric logging wedge. This cycle continues until the large tree is felled. Because this requires close-range operation by the logger, it poses safety hazards and is cumbersome, time-consuming, and labor-intensive. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides an electric logging wedge that can automatically move towards the inside of the trunk crack during logging. The entire logging process does not require loggers to operate it closely, eliminating safety hazards. It is simple to operate and saves time and effort.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] The present invention relates to an electric logging wedge, comprising a main logging wedge and a secondary logging wedge. The main logging wedge has a notch on its front side for accommodating the secondary logging wedge, and the main logging wedge is provided with a driving mechanism for driving the secondary logging wedge to extend forward / retract from the notch.

[0007] In this scheme, both the main logging wedge and the secondary logging wedge have anti-reverse mechanisms, so when the main logging wedge and the secondary logging wedge are inside the trunk crack, they can only move forward and cannot move backward. In operation, loggers first use an electric saw to cut a slit in the tree trunk, insert the main logging wedge into the slit, and activate the drive mechanism. The drive mechanism drives the secondary logging wedge to extend forward beyond the notch, widening the slit. When the secondary logging wedge extends to its limit, if the tree has not yet been felled, the drive mechanism drives the secondary logging wedge to retract. Because the secondary logging wedge has a stop mechanism, it is stuck by the tree and cannot move backward. The main logging wedge then moves forward, causing the secondary logging wedge to retract, thus completing the overall forward movement of the electric logging wedge. Afterward, the drive mechanism drives the secondary logging wedge to extend forward beyond the notch, further widening the slit. If the tree has not yet been felled, the drive mechanism drives the secondary logging wedge to retract, thus moving the main logging wedge forward. This cycle continues until the tree is felled.

[0008] Throughout the logging process, the electric logging wedge automatically completes the entire logging process. It is simple to operate, saves time and labor, and requires no workers to operate it, eliminating safety hazards. It can be used for trees of any diameter and has strong applicability.

[0009] Preferably, the main logging wedge includes a main wedge body and a connecting block. The connecting block is located on the rear side of the main wedge body, and the notch is located on the front side of the main wedge body. The connecting block has a cavity with a front opening. The driving mechanism includes a lead screw, a lead screw nut, and a driving module. The rear side of the main wedge body has a through hole, and the notch communicates with the cavity through the through hole. The lead screw nut is located in the through hole and is fixedly connected to the main wedge body. The lead screw nut is sleeved on the lead screw. The front end of the lead screw is rotatably connected to the rear end of the secondary logging wedge. The rear end of the lead screw extends into the cavity and is connected to the driving module. The driving module is used to drive the lead screw to rotate. The cavity has a guide rail arranged along the front-back direction. A slider that can slide along the guide rail is provided on the guide rail. The driving module is fixed on the slider.

[0010] When the drive module drives the lead screw to rotate forward, the lead screw moves forward because the lead screw nut remains stationary. This pushes the sub-logging wedge block forward out of the notch, and the drive module experiences a forward pulling force from the lead screw, causing the slider to move forward along the guide rail. When the drive module drives the lead screw to rotate in the reverse direction, the lead screw moves backward, pulling the sub-logging wedge block back into the notch. The drive module experiences a backward pushing force from the lead screw, causing the slider to move backward along the guide rail.

[0011] Preferably, the top surface of the main wedge is symmetrically provided with check valve components. The check valve components include a plurality of first check valve blocks. The top surface of the main wedge is provided with a receiving groove for accommodating the first check valve blocks. The bottom of the first check valve block is located in the receiving groove and is rotatably connected to the main wedge via a rotating shaft. An elastic element is provided in the receiving groove. The elastic element is used to drive the first check valve block to rotate to an upward tilting state from front to back, so that the top of the first check valve block extends upward out of the receiving groove.

[0012] Multiple first check blocks are arranged in a straight line from front to back. When no external force is applied, the first check blocks rotate under the action of the elastic element to an upward tilting state from front to back, with the top of the first check block extending upward into the receiving groove. When the main wedge of the main logging wedge is inserted into the crack in the tree trunk, the first check blocks rotate towards the receiving groove under the pressure of the tree trunk, allowing the main wedge to be smoothly inserted into the crack. If the main wedge moves forward, the first check blocks will not resist the main wedge. If the main wedge moves backward, the first check blocks will rotate upward into the receiving groove under the action of the elastic element, locking against the tree trunk and preventing the main wedge from moving backward.

[0013] Preferably, the longitudinal section of the first check block is teardrop-shaped, the large end of the first check block is rotatably connected to the main wedge body through a rotating shaft, and the small end of the first check block extends upward into the receiving groove under the action of the elastic element.

[0014] The elastic element is a spring sheet, which is S-shaped. The large end of the first check block is located in the front side of the receiving groove. A spring sheet fixing groove is provided in the front side of the receiving groove. The front part of the spring sheet is located in the spring sheet fixing groove, and the rear part of the spring sheet wraps around the large end of the first check block from below.

[0015] Preferably, the small end has a claw at its tip. The middle of the tip of the small end is recessed inward to form two symmetrical pointed blocks, which constitute the claw.

[0016] Preferably, the top surface of the main wedge and the top surface of the sub-logging wedge are located on the same plane.

[0017] Preferably, the top surface of the connecting block is composed of an inclined surface on the front side and a horizontal surface on the rear side, and the inclined surface and the top surface of the main wedge are located on the same plane.

[0018] Preferably, the drive module includes a drive motor, a transmission mechanism, an impact mechanism, and an output shaft. The rear end of the lead screw is coaxially connected to the output shaft. The impact mechanism is disposed between the output shaft and the transmission mechanism and connects the output shaft and the transmission mechanism. The impact mechanism is used to apply an impact force to the output shaft. The transmission mechanism is connected to the drive motor and is used to reduce the rotation of the drive motor and transmit it to the output shaft.

[0019] The drive motor reduces speed through the transmission mechanism and then drives the impact mechanism to apply a rotational impact force to the lead screw, thereby driving the lead screw to rotate.

[0020] Preferably, the receiving groove extends vertically through the main wedge. During logging, sawdust and other debris can easily fall into the receiving groove. The fact that the receiving groove extends through the main wedge facilitates the discharge of debris from the bottom of the receiving groove.

[0021] Preferably, the sub-logging wedge includes a sub-wedge body, the sub-wedge body is provided with a guide groove that penetrates the sub-wedge body in the left-right direction, the guide groove is provided in the front-back direction, and a guide post is provided in the notch that passes through the guide groove, the guide post being slidable along the guide groove.

[0022] Preferably, the top surface of the sub-wedge has a plurality of second check blocks evenly distributed thereon. The second check blocks are triangular in shape, with the left and right sidewalls of the second check blocks sloping inward from front to back, and the top surface of the second check blocks sloping upward from front to back. The front end of the top surface of the second check blocks is connected to the top surface of the sub-wedge.

[0023] When the sub-wedge is located inside the trunk crack, if the sub-wedge moves forward, the second check block will not resist the sub-wedge; if the sub-wedge moves backward, the second check block will jam against the trunk, preventing the main wedge from moving backward.

[0024] Preferably, the main logging wedge is equipped with a controller and a wireless communication module, with the controller electrically connected to both the drive mechanism and the wireless communication module. The electric logging wedge can be remotely controlled via wireless communication with the wireless communication module using a mobile phone, remote control, or other remote control device.

[0025] Preferably, the connecting block is provided with handles symmetrically on the left and right sides.

[0026] Preferably, the handle is provided with a strap buckle.

[0027] Preferably, a battery is provided on the rear side of the connecting block, and the battery is detachably connected to the connecting block. The battery is used to power the electric logging wedge.

[0028] The beneficial effects of this utility model are: it can automatically move towards the inside of the trunk crack during logging, and the entire logging process does not require loggers to operate it closely, eliminating safety hazards. It is simple to operate, saves time and effort, and is applicable to trees of any diameter, making it highly adaptable. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an electric logging wedge;

[0030] Figure 2 This is an exploded view of an electric logging wedge;

[0031] Figure 3This is a schematic diagram of the internal structure of an electric logging wedge;

[0032] Figure 4 This is a schematic diagram of the main logging wedge block;

[0033] Figure 5 This is a schematic diagram of the first check block installed on the receiving groove;

[0034] Figure 6 This is a schematic diagram of the structure of the first check block;

[0035] Figure 7 This is a schematic diagram of the structure of a log wedge;

[0036] Figure 8 This is a schematic diagram of the second check block;

[0037] Figure 9 This is a schematic diagram of the driver module;

[0038] Figure 10 This is a schematic diagram of the internal structure of the impact mechanism;

[0039] Figure 11 This is a schematic diagram of the drive shaft structure;

[0040] Figure 12 This is a schematic diagram of the results from the active impact cylinder;

[0041] Figure 13 This is a cross-sectional view of the impact mechanism.

[0042] In the diagram: 1. Main logging wedge, 2. Sub-logging wedge, 3. Notch, 4. Main wedge body, 5. Connecting block, 6. Cavity, 7. Lead screw, 8. Lead screw nut, 9. Drive motor, 10. Impact mechanism, 11. Guide rail, 12. Slider, 13. First check valve block, 14. Receiving groove, 15. Elastic element, 16. Large end, 17. Small end, 18. Claw, 19. Inclined surface, 20. Horizontal surface, 21. Sub-wedge body, 22. Guide groove, 23. Guide post, 24. Second check valve block, 25. Controller, 26. Battery 27. Handle; 28. Shoulder strap buckle; 29. ​​Metal casing; 30. Metal cover plate; 31. Chip discharge port; 32. Through hole; 33. Limiting notch; 34. First opening; 35. Strip hole; 36. Second opening; 37. Output shaft; 38. Transmission mechanism; 39. Active impact cylinder; 40. Passive impact cylinder; 41. Transmission shaft; 42. Active impact block; 43. Passive impact block; 44. V-shaped ball track; 45. Rolling ball; 46. Receiving groove; 47. Push ring; 48. Groove; 49. Stop block; 50. Return spring. Detailed Implementation

[0043] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0044] Example: An electric logging wedge of this example, such as Figures 1 to 13 As shown, it includes a main logging wedge 1 and a secondary logging wedge 2. The front side of the main logging wedge 1 is provided with a notch 3 for accommodating the secondary logging wedge 2. The main logging wedge 1 is provided with a drive mechanism for driving the secondary logging wedge 2 to extend forward / retract from the notch.

[0045] The main logging wedge 1 includes a main wedge body 4 and a connecting block 5. The connecting block 5 is located on the rear side of the main wedge body 4, and the notch 3 is located on the front side of the main wedge body 4. The connecting block 5 has a cavity 6 with a front opening. The driving mechanism includes a lead screw 7, a lead screw nut 8, and a driving module. The rear side of the main wedge body 4 has a through hole 32. The front end of the through hole 32 communicates with the notch 3, and the rear end of the through hole 32 communicates with the cavity 6. The notch 3 communicates with the cavity 6 through the through hole 32. The lead screw nut 8 is located in the through hole 32 and is fixedly connected to the main wedge body 4. The lead screw 7 passes through the through hole 32, and the lead screw nut 8 is sleeved on the lead screw 7. The front end of the lead screw 7 is rotatably connected to the rear end of the secondary logging wedge 2 through a plane bearing. The rear end of the lead screw 7 extends into the cavity 6 and is connected to the driving module. The cavity 6 has a guide rail 11 arranged along the front-back direction. The guide rail 11 has a slider 12 that can slide along the guide rail 11. The driving module is fixed on the slider 12. The guide rail 11 includes tracks symmetrically arranged on the left and right inner walls of the cavity 6.

[0046] When the drive module drives the lead screw to rotate forward, the lead screw moves forward because the lead screw nut remains stationary. This pushes the sub-logging wedge block forward out of the notch, and the drive module experiences a forward pulling force from the lead screw, causing the slider to move forward along the guide rail. When the drive module drives the lead screw to rotate in the reverse direction, the lead screw moves backward, pulling the sub-logging wedge block back into the notch. The drive module experiences a backward pushing force from the lead screw, causing the slider to move backward along the guide rail.

[0047] The drive module includes a drive motor 9, a transmission mechanism 38, an impact mechanism 10, and an output shaft 37. The rear end of the lead screw 7 is coaxially connected to the output shaft 37. The impact mechanism 10 is located between the output shaft 37 and the transmission mechanism 38 and connects the output shaft 37 and the transmission mechanism 38. The impact mechanism 10 is used to apply impact force to the output shaft 37. The transmission mechanism 38 is connected to the drive motor 9 and is used to reduce the rotation of the drive motor 9 and transmit it to the output shaft 37.

[0048] Impact mechanism 10 includes an active impact cylinder 39, a passive impact cylinder 40, and a drive shaft 41. The rear end of the drive shaft 41 is connected to the drive motor 9 via a transmission mechanism 38. The front end of the drive shaft 41 is rotatably connected to the rear end of the passive impact cylinder 40. The front end of the passive impact cylinder 40 is fixedly connected to the rear end of the output shaft 37. The active impact cylinder 39 is sleeved on the drive shaft 41 and can slide along the drive shaft 41. The output shaft 37, the passive impact cylinder 39, the drive shaft 41, and the active impact cylinder 39 are all coaxial. Two active impact blocks 42 are provided circumferentially on the front side of the active impact cylinder 39. A passive impact block 43 is provided on the outer wall of the passive impact cylinder 40 at a position corresponding to the active impact block 42. Two symmetrical V-shaped ball tracks 44 are provided on the outer wall of the drive shaft 41. Inside the V-shaped ball tracks 44, there are ball tracks that can slide along the V-shaped ball tracks. The ball 45 rolls on the ball track 44. The front part of the inner wall of the active impact cylinder 39 is provided with two symmetrical receiving grooves 46. The direction of the receiving grooves 46 is parallel to the axis of the active impact cylinder 39. The receiving grooves 46 correspond one-to-one with the V-shaped ball track 44. The receiving grooves 46 are semi-cylindrical. Half of the ball 45 is located in the corresponding V-shaped ball track 44, and the other half of the ball 45 is located in the corresponding receiving groove 46. A push ring 47 and a return spring 50 are also sleeved on the drive shaft 41. The push ring 47 can slide along the drive shaft 41. The rear side of the active impact cylinder 39 is provided with a groove 48 for receiving the push ring 47. The push ring 47 is located in the groove 48. The rear end of the drive shaft 41 is provided with an annular stop block 49. The front end of the return spring 50 is connected to the push ring 47, and the rear end of the return spring 50 is connected to the stop block 49.

[0049] The receiving groove and the V-shaped ball track form a space to accommodate the rolling balls. The transmission mechanism is a planetary transmission mechanism. The tip of the V-shaped ball track is located at the front, and the ends of the two V-shaped ball tracks on the same side are connected to each other. The drive motor drives the transmission shaft to rotate after being reduced in speed through the transmission mechanism. The rotating shaft drives the active impact cylinder to rotate through the rolling balls. The two active impact blocks of the active impact cylinder simultaneously impact the two passive impact blocks. The passive impact cylinder is impacted and drives the screw to rotate. When the main logging wedge is inserted into the trunk crack, the screw rotates and pushes the secondary logging wedge forward to extend the notch. During this process, the screw encounters resistance, which is transmitted to the passive impact cylinder. When the resistance encountered by the passive impact cylinder exceeds the set value, the active impact block cannot impact the passive impact block to rotate. The rolling balls are squeezed and move backward along the ball track, driving the active impact cylinder to move backward. The active impact block and the passive impact block separate and do not contact each other. After the active impact block rotates with the active impact cylinder and passes around the passive impact block, the active impact cylinder moves forward to reset under the action of the return spring. The rolling balls are driven forward by the active impact cylinder to return to the front end of the V-shaped ball track. The active impact block can continue to rotate and impact the passive impact block.

[0050] The top surface of the main wedge 4 is symmetrically provided with a check valve assembly. The check valve assembly includes multiple first check valve blocks 13, which are arranged in a straight line from front to back. The top surface of the main wedge 4 is provided with a receiving groove 14 for accommodating the first check valve blocks 13. The bottom of the first check valve block 13 is located in the receiving groove 14 and is rotatably connected to the main wedge 4 through a rotating shaft. An elastic element 15 is provided in the receiving groove 14. The elastic element 15 is used to drive the first check valve block 13 to rotate to an upward tilting state from front to back, so that the top of the first check valve block 13 extends upward out of the receiving groove 14.

[0051] The longitudinal section of the first check block 13 is teardrop-shaped. The large end 16 of the first check block 13 is rotatably connected to the main wedge 4 through a rotating shaft. The small end 17 of the first check block 13 extends upward into the receiving groove 14 under the action of the elastic member 15.

[0052] The elastic element 15 is a spring sheet, which is S-shaped. The large end 16 of the first check block 13 is located in the front side of the receiving groove 14. The front side of the receiving groove 14 is provided with a spring sheet fixing groove. The front part of the spring sheet is fixed in the spring sheet fixing groove, and the rear part of the spring sheet wraps around the large end 16 of the first check block 13 from below.

[0053] like Figure 5 As shown, when no external force is applied, the first check block rotates to an upward tilting state from front to back under the action of the elastic element. The angle between the upper surface of the first check block and the horizontal plane can be 30-90 degrees, and the small end of the first check block extends upward into the receiving groove. When the main wedge of the main logging wedge is inserted into the trunk crack, the first check block rotates towards the receiving groove under the pressure of the trunk, allowing the main wedge to be smoothly inserted into the trunk crack. If the main wedge moves forward, the first check block will not resist the main wedge. If the main wedge moves backward, the first check block will rotate upward into the receiving groove under the action of the elastic element, and the small end of the first check block will be stuck with the trunk, preventing the main wedge from moving backward.

[0054] The small end 17 of the first check block 13 is provided with a pawl 18. For example... Figure 6 As shown, the top of the small end 17 is concave inward to form two symmetrical pointed blocks, which constitute the claw 18. The claw 18 facilitates locking into the tree and provides greater resistance to the backward movement of the main logging wedge.

[0055] The top rear side of the receiving groove 14 is provided with a limiting notch 33 that communicates with the receiving groove 14. The bottom surface of the limiting notch 33 is inclined upward from front to back. When the first check block 13 rotates to the point where its upper surface is nearly parallel to the upper surface of the main wedge 4, the small end 17 of the first check block 13 abuts against the bottom surface of the limiting notch 33.

[0056] The receiving groove 14 penetrates the main wedge 4 vertically. During logging, sawdust and other debris can easily fall into the receiving groove. The fact that the receiving groove penetrates the main wedge facilitates the discharge of debris from the bottom of the receiving groove.

[0057] The sub-logging wedge 2 includes a sub-wedge body 21, on which a guide groove 22 is provided that runs through the sub-wedge body 21 in the left-right direction. The guide groove 22 is arranged in the front-back direction. A guide post 23 is provided in the notch 3 that passes through the guide groove 22. The guide post 23 can slide along the guide groove 22.

[0058] The top surface of the sub-wedge 21 is evenly distributed with a plurality of second check blocks 24. The second check blocks 24 are triangular in shape. The left and right sidewalls of the second check blocks 24 are inclined inward from front to back. The top surface of the second check blocks 24 is inclined upward from front to back. The front end of the top surface of the second check blocks 24 is connected to the top surface of the sub-wedge 21.

[0059] The main wedge 4 is a right-angled triangle, and the sub-wedge 21 is a right-angled triangle. The top surface of the main wedge 4 and the top surface of the sub-wedge 21 are on the same plane. The top surface of the connecting block 5 is composed of a front inclined surface 19 and a rear horizontal surface 20, and the inclined surface 19 and the top surface of the main wedge 4 are on the same plane.

[0060] When the sub-wedge is located inside the trunk crack, if the sub-wedge moves forward, the second check block will not resist the sub-wedge; if the sub-wedge moves backward, the second check block will jam against the trunk, preventing the main wedge from moving backward.

[0061] In this scheme, the main logging wedge is equipped with a first anti-reverse block, and the secondary logging wedge is equipped with a second anti-reverse block. Therefore, when the main logging wedge and the secondary logging wedge are in the crack in the tree trunk, they can only move forward and cannot move backward.

[0062] In operation, loggers first use an electric saw to cut a slit in the tree trunk, insert the main logging wedge into the slit, and start the electric logging wedge. The drive module drives the screw to rotate forward. The main logging wedge cannot move backward under the action of the first check block, and the screw moves forward, pushing the secondary logging wedge forward to extend beyond the notch, widening the slit. When the secondary logging wedge extends forward to its limit position, if the tree has not yet been felled, the drive module drives the screw to rotate in the opposite direction. Since the secondary logging wedge cannot move backward under the action of the second check block, the rotation of the screw pushes the main logging wedge forward through the screw nut, causing the secondary logging wedge to retract into the notch, thus completing the overall forward movement of the electric logging wedge. Afterward, the drive module drives the screw to rotate forward, thereby driving the secondary logging wedge to extend forward beyond the notch, further widening the slit. If the tree has not yet been felled, the drive module drives the screw to rotate in the opposite direction, thereby driving the main logging wedge forward, causing the secondary logging wedge to retract into the notch. This cycle continues until the tree is felled.

[0063] Throughout the logging process, the electric logging wedge automatically completes the entire logging process. It is simple to operate, saves time and labor, and requires no workers to operate it, eliminating safety hazards. It can be used for trees of any diameter and has strong applicability.

[0064] A controller 25 is installed inside the cavity 6. The controller 25 is electrically connected to the drive motor 9 and is used to control the operation of the electric logging wedge. A battery 26 is installed on the rear side of the connecting block 5. The battery 26 is detachably connected to the connecting block 5 and is used to power the electric logging wedge.

[0065] The electric logging wedge also includes a metal casing 29 and a metal cover plate 30. The top and rear ends of the metal casing 29 are open. The metal casing 30 is used to cover the bottom, left, and right sides of the main logging wedge block 1. The metal cover plate 30 matches the top opening of the metal casing 29 and is used to cover the top surface of the main logging wedge block 1. The battery 26 is located behind the rear opening of the metal casing 29. The front side of the metal cover plate 30 has a first opening 34, which matches the notch 3. The metal cover plate 30 has a strip hole 35 at a position corresponding to the receiving groove 14, which is used to allow the first check block 13 to pass through when rotating. The front side of the bottom of the metal casing 29 has a second opening 36, which matches the notch 3. The bottom surface of the metal casing 29 has a chip discharge port 31 at a position corresponding to the receiving groove 14, which communicates with the corresponding receiving groove 14. The first opening does not obstruct the top surface of the logging wedge block, and the second opening does not obstruct the bottom surface of the logging wedge block. The chip discharge port facilitates the discharge of debris from the containment tank.

[0066] The metal casing 29 has symmetrical handles 27 on both sides. The handles 27 are located at the rear of the metal casing 29, and a shoulder strap buckle 28 is provided at the rear end of the handles 27. The handles make it easy for users to hold the electric logging wedge, and the shoulder strap buckle can be used to install a shoulder strap, making the electric logging wedge easy to carry.

[0067] A wireless communication module may also be installed inside cavity 6, which is electrically connected to controller 25. Users can communicate wirelessly with the wireless communication module via mobile phones, remote controls, or other remote control devices to remotely control the operation of the electric logging wedge.

[0068] A sensor may be provided on the top surface of the sub-wedge 21 or the main wedge 4. The sensor is used to detect whether there is an obstruction above it, and the sensor is electrically connected to the controller. The sensor can be a distance sensor. During logging, the main logging wedge is inserted into the gap, and the electric logging wedge is started. When the distance sensor detects an obstruction above it, the drive mechanism drives the sub-logging wedge to extend forward beyond the gap, widening the gap. When the sub-logging wedge extends forward to its limit position, if the tree has not yet been felled, the drive mechanism drives the main logging wedge to move forward, causing the sub-logging wedge to retract into the gap. Then, the drive mechanism drives the sub-logging wedge to extend forward beyond the gap, further widening the gap. If the tree has not yet been felled, the drive mechanism drives the main logging wedge to move forward, causing the sub-logging wedge to retract into the gap. This cycle continues until the distance sensor detects that there is no obstruction above it. The controller then determines that the tree has been felled and stops the electric logging wedge from operating.

Claims

1. An electric logging wedge, characterized in that, It includes a main logging wedge (1) and a secondary logging wedge (2). The main logging wedge (1) has a notch (3) on its front side for accommodating the secondary logging wedge (2). The main logging wedge (1) is provided with a driving mechanism for driving the secondary logging wedge (2) to extend forward / retract into the notch (3).

2. The electric logging wedge according to claim 1, characterized in that, The main logging wedge (1) includes a main wedge body (4) and a connecting block (5). The connecting block (5) is located on the rear side of the main wedge body (4), and the notch (3) is located on the front side of the main wedge body (4). The connecting block (5) has a cavity (6) with a front opening. The driving mechanism includes a lead screw (7), a lead screw nut (8), and a driving module. The main wedge body (4) has a through hole (32) on its rear side. The notch (3) communicates with the cavity (6) through the through hole (32). The lead screw nut (8) is located in the through hole (32). The screw nut (8) is sleeved on the screw (7). The front end of the screw (7) is rotatably connected to the rear end of the sub-logging wedge (2). The rear end of the screw (7) extends into the cavity (6) and is connected to the drive module. The drive module is used to drive the screw (7) to rotate. The cavity (6) is provided with a guide rail (11) arranged along the front and rear direction. The guide rail (11) is provided with a slider (12) that can slide along the guide rail (11). The drive module is fixed on the slider (12).

3. The electric logging wedge according to claim 2, characterized in that, The main wedge (4) has symmetrically arranged check components on its top surface. The check components include multiple first check blocks (13). The main wedge (4) has a receiving groove (14) on its top surface corresponding to the position of the first check block (13) for accommodating the first check block (13). The bottom of the first check block (13) is located in the receiving groove (14) and is rotatably connected to the main wedge (4) through a rotating shaft. An elastic element (15) is provided in the receiving groove (14). The elastic element (15) is used to drive the first check block (13) to rotate to an upward tilting state from front to back, so that the top of the first check block (13) extends upward out of the receiving groove (14).

4. The electric logging wedge according to claim 3, characterized in that, The first check block (13) has a teardrop-shaped longitudinal section. The large end of the first check block (13) is rotatably connected to the main wedge (4) through a rotating shaft. The small end (17) of the first check block (13) extends upward into the receiving groove (14) under the action of the elastic element (15).

5. The electric logging wedge according to claim 4, characterized in that, The small end (17) is provided with a claw (18) at its top.

6. The electric logging wedge according to claim 2, characterized in that, The top surface of the main wedge (4) and the top surface of the secondary logging wedge (2) are located on the same plane.

7. The electric logging wedge according to claim 2, characterized in that, The drive module includes a drive motor (9), a transmission mechanism (38), an impact mechanism (10), and an output shaft (37). The rear end of the lead screw (7) is coaxially connected to the output shaft (37). The impact mechanism (10) is located between the output shaft (37) and the transmission mechanism (38) and connects the output shaft (37) and the transmission mechanism (38). The impact mechanism (10) is used to apply impact force to the output shaft (37). The transmission mechanism (38) is connected to the drive motor (9). The transmission mechanism (38) is used to decelerate the rotation of the drive motor (9) and transmit it to the output shaft (37).

8. The electric logging wedge according to claim 3, characterized in that, The receiving groove (14) penetrates the main wedge (4) in the vertical direction.

9. The electric logging wedge according to claim 1, characterized in that, The sub-logging wedge (2) includes a sub-wedge body (21), and the sub-wedge body (21) is provided with a guide groove (22) that runs through the sub-wedge body (21) in the left-right direction. The guide groove (22) is arranged in the front-back direction. The notch (3) is provided with a guide post (23) that passes through the guide groove (22). The guide post (23) can slide along the guide groove (22).

10. An electric logging wedge according to claim 9, characterized in that, The top surface of the sub-wedge (21) is evenly distributed with a plurality of second check blocks (24). The second check blocks (24) are triangular in shape. The left and right sidewalls of the second check blocks (24) are inclined inward from front to back. The top surface of the second check blocks (24) is inclined upward from front to back. The front end of the top surface of the second check blocks (24) is connected to the top surface of the sub-wedge (21).

Images