Withered stump removing device for forest tree breeding and using method of withered stump removing device

Abstract

The invention provides a withered stump removing device for forest tree breeding and a using method thereof.The withered stump removing device comprises a supporting frame, moving wheels, a hydraulic rod, a lifting rod and a clamping mechanism, the symmetrical moving wheels are arranged at the bottom of the supporting frame, one end of the lifting rod is rotationally connected to the upper end of the supporting frame, and the other end of the lifting rod is connected with the clamping mechanism; the hydraulic rod is fixed in the supporting frame, and the movable end of the hydraulic rod is connected to the middle of the lifting rod through a hinge seat. The closed annular area formed by the first tooth clamp and the second tooth clamp is adjusted through the adjusting assembly so as to adapt to the size of a withered tree stump, compared with an existing pulling device, the size of the clamping mechanism can be conveniently adjusted, the clamp does not need to be repeatedly replaced, and the convenience and efficiency of tree stump pulling work are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a stump pulling device, in particular to a dead stump pulling device for forest breeding and a method of using the same. BACKGROUND

[0002] Forest breeding, as a technology system with genetic improvement as the core, is committed to breeding forest varieties with strong adaptability, rapid growth and outstanding stress resistance through systematic breeding, hybrid breeding and molecular marker assisted selection. This industry is based on genetics, combines with tree science, forest ecology and other disciplines, and forms a complete technical chain covering germplasm resource collection, genetic determination and variety breeding.

[0003] In forest management practice, the removal of dead stumps is a key link to maintain the health of the stand. Studies in the Qinling forest area have shown that the long-term presence of dead stumps can cause multiple ecological risks: their loose wood structure and low water content make them easy channels for ground fires to spread to tree crown fires; the release of organic matter during decomposition can change the structure of soil microbial communities; and some wood-boring pests such as longhorn beetles use stumps as overwintering sites. Although tree species with strong natural regeneration capacity can use some live stumps for root sprouting, the decayed state of dead stumps makes them lose their ecological value and may become breeding grounds for pests and diseases. The current Forest Felling and Regeneration Regulations clearly require that the felling height be controlled at 0-5 cm, aiming to reduce fire risk levels and pest and disease base to improve overall forest performance.

[0004] The existing electric push rod type stump pulling device can achieve stump pulling through reaction force, but in actual application it faces significant technical bottlenecks. The device is designed based on the principle of leverage, applying a vertical upward pulling force to the stump through an electric push rod, and its work efficiency is highly dependent on the fit of the clamping mechanism and the stump. However, there are significant differences in the shape of stumps in the forest area: the diameter range spans a large range, and some broadleaf stumps have an abnormally large maximum diameter due to root plate expansion; the loose surface of decaying stumps makes mechanical clamping prone to causing surface peeling and reducing the coefficient of friction. Therefore, the existing device has limitations in actual application: multiple sets of replaceable clamps are needed for stumps of different diameters, increasing the complexity of the operation. SUMMARY

[0005] In order to overcome the shortcomings of the existing stump pulling device that the clamps need to be replaced immediately according to the size of the stump, increasing the difficulty of the operation, the present application provides a dead stump pulling device for forest breeding and a method of using the same.

[0006] The technical scheme provided by the present application is as follows: a device for removing dead tree stumps for forest tree breeding, comprising a support frame, moving wheels, a hydraulic rod, a lifting rod and a clamping mechanism, the support frame is provided with symmetrical moving wheels at the bottom, the lifting rod is rotatably connected to the upper end of the support frame at one end, and the other end is connected with the clamping mechanism, the hydraulic rod is fixed in the support frame, the movable end of the hydraulic rod is connected to the middle part of the lifting rod through a hinge seat, the clamping mechanism comprises a supporting disc, a flexible chain, a first tooth clamp, a second tooth clamp, a tooth and an adjusting assembly, the supporting disc is rotatably connected to the end of the lifting rod, the supporting disc is connected with the first tooth clamp and the second tooth clamp in a semicircular combination through the flexible chain, the first tooth clamp and the second tooth clamp are provided with teeth at equal intervals, the adjusting assembly is connected between the first tooth clamp and the second tooth clamp, the adjusting assembly is composed of a gear and a rack, the gear is rotatably connected to the end of the first tooth clamp, the rack extends from the end of the second tooth clamp, and the rack and the gear are in meshing state, the closed ring formed by the first tooth clamp and the second tooth clamp can externally surround and clamp the dead tree stump, and then the lifting rod is started to lever-lift the lifting rod, so that the dead tree stump is pulled out through the clamping mechanism, according to different diameters of the tree stumps, the gear can be rotated to extend or retract the rack, so as to adjust the area of the closed ring formed by the first tooth clamp and the second tooth clamp, so as to adapt to the size of the tree stumps to be removed.

[0007] Further, the flexible chain connecting the ends of the first tooth clamp and the second tooth clamp is shorter, and the flexible chain connecting the middle parts of the first tooth clamp and the second tooth clamp is longer, and the horizontal height of the ends of the first tooth clamp and the second tooth clamp is higher than that of the middle parts.

[0008] Further, the teeth are slidably connected to the first tooth clamp and the second tooth clamp, and the teeth are fixed by bolts, so that the teeth are replaceable.

[0009] Further, it further comprises a threaded rod and a handle, the threaded rod is threaded into the middle part of the supporting disc, the upper end of the threaded rod is fixedly connected with the handle, the threaded rod can be moved downward by rotating the handle, and the threaded rod can be rotated and inserted into the tree stump.

[0010] Further, it further comprises a ground anchor, the ground anchor is slidably connected to the side surface of the support frame, the upper end of the ground anchor is a flat head, and the lower end is a sharp head.

[0011] Further, it further comprises a multi-loop chain, the multi-loop chain is connected to the side surface of the first tooth clamp, the side surface of the second tooth clamp is connected with a buckle, and the multi-loop chain can be fixed to the buckle in a clamping manner.

[0012] Further, it further comprises an auxiliary handle, and the side surface of the support frame is provided with the auxiliary handle.

[0013] According to the above-mentioned device for removing dead tree stumps for forest tree breeding, a use method of the device for removing dead tree stumps for forest tree breeding is proposed, which is as follows:

[0014] S1, the worker moves the device to the dead stump, so that the clamping mechanism is located above the stump, and then inserts the ground plug into the ground;

[0015] S2, the hydraulic rod is depressurized, so that the first tooth clamp and the second tooth clamp of the clamping mechanism are sleeved outside the dead stump, the size of the annular formed by the first tooth clamp and the second tooth clamp is adjusted by rotating the gear, so as to adapt to the size of the dead stump, and after the first tooth clamp and the second tooth clamp are tightly attached to the outside of the dead stump, the multi-ring chain and the fastener are fastened;

[0016] S3, the handle is rotated to insert the threaded rod into the middle part of the stump, so as to assist the fixing effect of the clamping mechanism on the stump;

[0017] S4, the worker holds the auxiliary handle and starts the hydraulic rod, the hydraulic rod drives the clamping mechanism to move upwards, and the clamping mechanism removes the dead stump.

[0018] Compared with the prior art, the present application has the following advantages: by adjusting the closed annular area formed by the first tooth clamp and the second tooth clamp, the size of the clamping mechanism can be conveniently adjusted, and the clamping mechanism does not need to be replaced repeatedly, thereby improving the convenience and efficiency of the stump removal work. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the support frame, the hydraulic rod and the clamping mechanism of the present application.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the clamping mechanism of the present application.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the adjusting assembly of the present application.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the threaded rod of the present application.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the threaded rod of the present application.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the ground plug of the present application.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the ground plug of the present application.

[0027] In the figure: 1, support frame, 2, moving wheel, 3, hydraulic rod, 4, lifting rod, 5, clamping mechanism, 6, supporting plate, 7, flexible chain, 801, first tooth clamp, 802, second tooth clamp, 9, tooth, 10, gear, 11, rack, 12, threaded rod, 13, handle, 14, ground plug, 15, multi-ring chain, 16, auxiliary handle. DETAILED DESCRIPTION

[0028] The application will be further described below in conjunction with the specific embodiments, wherein the drawings are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation on the application. In order to better illustrate the specific embodiments of the application, some components of the drawings will be omitted, enlarged or reduced, and it is understood by those skilled in the art that some well-known structures and their descriptions in the drawings can be omitted. Based on the specific embodiments in the application, all other specific embodiments obtained by those skilled in the art without creative labor fall within the scope of the application.

[0029] In the description of the application, it should be noted that the terms "front", "back", "upper", "lower" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0030] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0031] Embodiment: A dead stump pulling device for forest tree breeding, as shown in Figures 1-7As shown, including support frame 1, mobile wheel 2, hydraulic rod 3, lifting rod 4 and clamping mechanism 5, support frame 1 bottom is provided with symmetrical mobile wheel 2, lifting rod 4 left end is rotatably connected to the upper part of support frame 1, the other end is connected with clamping mechanism 5, hydraulic rod 3 is fixed in support frame 1, the movable end of hydraulic rod 3 is connected to the middle part of lifting rod 4 through the hinge seat, clamping mechanism 5 includes dish 6, flexible chain 7, first tooth clamp 801, second tooth clamp 802, tooth 9 and adjusting assembly, dish 6 is rotatably connected to the end of lifting rod 4, dish 6 is connected with semicircular combination of first tooth clamp 801 and second tooth clamp 802 through flexible chain 7, first tooth clamp 801 and second tooth clamp 802 are equidistantly provided with tooth 9, tooth 9 is slidably connected with first tooth clamp 801 and second tooth clamp 802, tooth 9 is fixed by bolt, so tooth 9 is replaceable, so as to improve the service life of the device, and different teeth 9 are selected for different plant wood, first tooth clamp 801 and second tooth clamp 802 are connected with adjusting assembly, adjusting assembly is composed of gear 10 and rack 11, first tooth clamp 801 end is rotatably connected with gear 10, second tooth clamp 802 end extends rack 11, rack 11 and gear 10 are in meshing state, the closed ring composed of first tooth clamp 801 and second tooth clamp 802 can surround and clamp the dead stump outside, and then the lever lifting of lifting rod 4 is started through the starting of hydraulic rod 3, and then the dead stump is pulled out through clamping mechanism 5, according to different diameters of the stump, the gear 10 can be rotated to extend or retract the rack 11, and then the area of the closed ring composed of first tooth clamp 801 and second tooth clamp 802 is adjusted, so as to adapt to the size of the tree to be removed.

[0032] As shown in Figure 1 and Figure 3 , the flexible chain 7 connecting the ends of the first tooth clamp 801 and the second tooth clamp 802 is shorter, the flexible chain 7 connecting the middle parts of the first tooth clamp 801 and the second tooth clamp 802 is longer, and the horizontal height of the ends of the first tooth clamp 801 and the second tooth clamp 802 is higher than that of the middle parts.

[0033] As shown in Figure 1 and Figure 6 , it also includes threaded rod 12 and handle 13, threaded rod 12 is threaded into the middle part of dish 6, handle 13 is fixed on the upper end of threaded rod 12, threaded rod 12 can be moved downward by rotating handle 13, after clamping mechanism 5 clamps and fixes the dead stump, threaded rod 12 can be rotated and inserted into the stump, further improving the fixing effect on the stump, and then improving the pulling out effect on the stump.

[0034] As shown in Figure 1 , Figure 7 and Figure 8As shown, it also includes the ground plug 14, the support frame 1 side slidingly connected with the ground plug 14, the upper end of the ground plug 14 is flat, the lower end is a sharp, staff through the flat part of the ground plug 14 by stepping, the ground plug 14 is inserted into the soil, so as to fix the support frame 1, improve the stability of the device when the stump removal.

[0035] As shown in Figure 1 and Figure 4 As shown, it also includes a multi-ring chain 15, the first tooth clamp 801 side is connected with the multi-ring chain 15, the second tooth clamp 802 side is connected with the fastener, the multi-ring chain 15 can be fixed to the fastener by clamping, so as to stabilize the connection of the first tooth clamp 801 and the second tooth clamp 802.

[0036] As shown in Figure 1 As shown, it also includes an auxiliary handle 16, the support frame 1 side is provided with the auxiliary handle 16.

[0037] The use method of the device is as follows: first, the staff moves the device to the dead stump through the auxiliary handle 16 on the side of the support frame 1, so that the clamping mechanism 5 is above the stump. At this time, the symmetrical moving wheels 2 arranged at the bottom of the support frame 1 facilitate the movement of the device, and the ground pegs 14 slidably connected to the side of the support frame 1 have flat heads at the upper ends and sharp heads at the lower ends. The staff inserts the ground pegs 14 into the soil by treading the flat head part of the ground pegs 14, thereby fixing the support frame 1 and improving the stability of the device during the removal of the stump. Then, the hydraulic rod 3 is depressurized, so that the lifting rod 4 of the clamping mechanism 5 drives the clamping mechanism 5 to move downward through the action of the hinge seat at the movable end of the hydraulic rod 3, so that the first toothed clamp 801 and the second toothed clamp 802 are sleeved on the periphery of the dead stump. The disc 6 of the clamping mechanism 5 is rotationally connected to the end of the lifting rod 4, and the disc 6 is connected with the first toothed clamp 801 and the second toothed clamp 802 in a semicircular combination through the flexible chain 7. According to the different diameters of the stump, the gear 10 rotationally connected to the end of the first toothed clamp 801 is rotated. Since the second toothed clamp 802 has a rack 11 extending from the end, the rack 11 is in meshing state with the gear 10, and rotating the gear 10 can elongate or retract the rack 11, thereby adjusting the closed annular area formed by the first toothed clamp 801 and the second toothed clamp 802 to adapt to the size of the stump to be removed. After the first toothed clamp 801 and the second toothed clamp 802 are tightly attached to the outside of the dead stump, the multi-ring chain 15 connected to the side of the first toothed clamp 801 is buckled with the buckle connected to the side of the second toothed clamp 802, thereby stabilizing the connection of the first toothed clamp 801 and the second toothed clamp 802. Moreover, the teeth 9 are slidably inserted into the first toothed clamp 801 and the second toothed clamp 802, and the teeth 9 are fixed by bolts, so the teeth 9 are replaceable. Different teeth 9 can be selected according to different plant woods, thereby improving the service life of the device. In addition, the threaded rod 12 is threaded into the middle of the disc 6, and the handle 13 is fixed to the upper end of the threaded rod 12. The threaded rod 12 can be moved downward by rotating the handle 13. After the clamping mechanism 5 clamps and fixes the dead stump, the threaded rod 12 can be rotated and inserted into the stump, thereby further improving the fixing effect on the stump and the removal effect on the stump. The flexible chain 7 connected to the ends of the first toothed clamp 801 and the second toothed clamp 802 is shorter, and the flexible chain 7 connected to the middle of the first toothed clamp 801 and the second toothed clamp 802 is longer, so that the horizontal height of the ends of the first toothed clamp 801 and the second toothed clamp 802 is higher than that of the middle. When the device is started, the clamping mechanism 5 will move upward to remove the stump. From the perspective of mechanics, when the annular formed by the first toothed clamp 801 and the second toothed clamp 802 is in an inclined state, a force along the axis of the stump and a normal force perpendicular to the surface of the stump will be generated on the contact surface of the annular.In the process of pulling out the stump, the axial component force directly acts on the stump, providing the main power for pulling it out of the soil; and the normal component force helps to increase the friction between the clamp and the stump, according to the friction formula Ff=μFN (where Ff is the friction force, μ is the friction coefficient, and FN is the normal pressure), the increase of the normal component force makes the friction force increase accordingly, thereby enhancing the clamping stability of the clamp to the stump, effectively preventing the stump from slipping out of the clamp during the pulling process. Finally, the staff holds the auxiliary handle 16 and starts the hydraulic rod 3, the movable end of the hydraulic rod 3 drives the middle part of the lifting rod 4 through the hinged seat, the lifting rod 4 is lifted by using the lever principle, the lifting rod 4 drives the clamping mechanism 5 to move upward, and the clamping mechanism 5 pulls out the dead stump. Thus, the pulling operation of the dead stump is completed.

[0038] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A dead stump pulling device for tree breeding, comprising a support frame (1), moving wheels (2), a hydraulic rod (3), a lifting rod (4) and a clamping mechanism (5), the bottom of the support frame (1) is provided with symmetrical moving wheels (2), one end of the lifting rod (4) is rotatably connected to the upper end of the support frame (1), the other end is connected with the clamping mechanism (5), the hydraulic rod (3) is fixed in the support frame (1), and the movable end of the hydraulic rod (3) is connected to the middle part of the lifting rod (4) through a hinge seat, characterized in that, The clamping mechanism (5) comprises a supporting disc (6), a flexible chain (7), a first toothed clamp (801), a second toothed clamp (802), a tooth (9) and an adjusting assembly. The supporting disc (6) is rotationally connected to the end of the lifting rod (4). The supporting disc (6) is connected with the first toothed clamp (801) and the second toothed clamp (802) in a semicircular combination through the flexible chain (7). The first toothed clamp (801) and the second toothed clamp (802) are equidistantly provided with the tooth (9) inside. The first toothed clamp (801) and the second toothed clamp (802) are connected with the adjusting assembly. The adjusting assembly is composed of a gear (10) and a rack (11). The end of the first toothed clamp (801) is rotationally connected with the gear (10). The end of the second toothed clamp (802) extends with the rack (11). The rack (11) and the gear (10) are in meshing state.

2. A dead stump puller for use in tree breeding according to claim 1, characterized in that, The flexible chain (7) connecting the ends of the first toothed clamp (801) and the second toothed clamp (802) is shorter. The flexible chain (7) connecting the middle parts of the first toothed clamp (801) and the second toothed clamp (802) is longer. The horizontal height of the ends of the first toothed clamp (801) and the second toothed clamp (802) is higher than that of the middle parts.

3. A dead stump puller for use in tree breeding according to claim 2, wherein The tooth (9) is slidingly connected to the first toothed clamp (801) and the second toothed clamp (802). The tooth (9) is fixed by bolts.

4. A dead stump puller for use in tree breeding according to claim 3, wherein It also comprises a threaded rod (12) and a handle (13). The threaded rod (12) is threaded into the middle part of the supporting disc (6). The upper end of the threaded rod (12) is fixedly connected with the handle (13).

5. A dead stump puller for use in tree breeding according to claim 4, wherein It also comprises a ground anchor (14). The ground anchor (14) is slidingly connected to the side of the support frame (1).

6. A dead stump puller for use in tree breeding according to claim 5, wherein It also comprises a multi-ring chain (15). The multi-ring chain (15) is connected to the side of the first toothed clamp (801). The second toothed clamp (802) is connected with a fastener. The multi-ring chain (15) can be fixed to the fastener by clamping.

7. A dead stump puller for use in tree breeding according to claim 6, characterized in that, It also comprises an auxiliary handle (16). The auxiliary handle (16) is arranged on the side of the support frame (1).

8. A method for using a dead stump pulling device for tree breeding, using the dead stump pulling device for tree breeding according to any one of claims 6-7, characterized in that, The following steps are included: S1, the device is moved to the dead stump, so that the clamping mechanism (5) is located above the stump, and then the ground anchor (14) is inserted into the ground; S2, the first toothed clamp (801) and the second toothed clamp (802) of the clamping mechanism (5) are sleeved on the periphery of the dead stump by releasing the pressure of the hydraulic rod (3). The size of the ring formed by the first toothed clamp (801) and the second toothed clamp (802) is adjusted by rotating the gear (10) to adapt to the size of the dead stump. After the first toothed clamp (801) and the second toothed clamp (802) are closely attached to the outside of the dead stump, the multi-ring chain (15) and the fastener are buckled tightly; S3, the threaded rod (12) is inserted into the middle part of the stump by rotating the handle (13) to assist the fixing effect of the clamping mechanism (5) on the stump; S4, the hydraulic rod (3) is started. The hydraulic rod (3) drives the clamping mechanism (5) to move upwards. The clamping mechanism (5) removes the dead stump.

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