A bamboo forest working machine that can be used for stumping, root breaking, and rotary tillage
By designing a bamboo forest operation machine with optional different working devices, the problem of single functions of existing bamboo forest machinery is solved, and multifunctional operation and efficient operation conversion are realized.
Patent Information
- Application Number
- CN201910307573.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-04-17
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2039-04-17
AI Technical Summary
The existing bamboo forest machinery has a single function, which is difficult to meet the needs of multiple operating subjects, and lacks an integrated solution.
A bamboo forest operation machine that can be used for pile cutting, shattering and rotary tillage is designed. A small excavation crusher is used as a carrier. Through optional pile cutting devices, shattering devices and rotary tillage devices, it meets the needs of different operating subjects.
It realizes the versatility of the bamboo forest operation machine, and can quickly replace the execution device according to different operating subjects, improving the working efficiency and the flexibility of the machine.
Smart Images

Figure CN109832001B_ABST
Abstract
Description
Technical Field
[0001] The present technology relates to the field of forestry machinery and provides a bamboo forest operation machine that can be used for stump felling, basket breaking and rotary tillage. The bamboo forest operation machine uses a small excavator crusher with the breaker hammer removed as a carrier, and can be optionally equipped with a stump felling device, a basket breaking device and a rotary tillage device to respectively meet the requirements of the operations of bamboo stump felling, bamboo root basket breaking and woodland rotary tillage. Background Art
[0002] my country has abundant bamboo resources but a shortage of wood resources. Bamboo has the advantages of a short growth cycle, strong material, and can partially replace wood. The development and utilization of bamboo resources has huge ecological, economic and social benefits. The bamboo industry has developed into the top of the top ten industries in my country's forestry industry and has become a pillar industry for the development of forestry in the southern hilly and mountainous areas.
[0003] With the advancement of science and technology and the effective implementation of some high-yield bamboo forest cultivation measures, large-scale extensive bamboo forest management has been transformed into intensive management. Mechanized operations in bamboo forests have been increasingly widely used in operations such as bamboo stump felling, bamboo root breaking, and rotary tillage of forest land.
[0004] Bamboo forests are mostly located in mountains. The bamboo roots are well-developed and relatively tough, and the plant density is higher than that of woods, so bamboo forest machinery needs to have good suitability.
[0005] In the prior art, corresponding bamboo forest machinery has been popularized for operations such as bamboo stumping (separating bamboo stumps from bamboo stumps, referred to as stumping), bamboo root breaking (breaking bamboo stumps, referred to as breaking), and forest land rotary tillage (forest land preparation, referred to as rotary tillage), but most of them are limited to one machine for one use, with relatively single functions, and there is a certain degree of lack of integration requirements for bamboo forest machinery. Summary of the invention
[0006] The purpose of this technology is to provide a bamboo forest operation machine that can be used for stump felling, basket breaking, and rotary tillage. The bamboo forest operation machine uses a small excavator crusher with a breaker hammer as a carrier, and can be optionally equipped with a stump felling device, a basket breaking device, and a rotary tillage device to meet the operating requirements of bamboo stump felling, bamboo root basket breaking, and forest land rotary tillage.
[0007] The purpose of this technology is to achieve the following technical solutions:
[0008] A bamboo forest working machine that can be used for stump removal, root breaking, and rotary tillage, including a small excavating crusher with the hammer body of the crusher removed, and further including a power device arranged on the support body of the small excavating crusher, and an execution device that is detachably arranged on the power device, both powered by the power device mechanically, and includes a stump removal device, a root breaking device, and a rotary tillage device. The execution device at least includes an execution device housing; the power device includes a hydraulic motor that is provided with hydraulic power by the small excavating crusher, and a speed reducer that is fixedly connected to the support body of the small excavating crusher and inputs mechanical power from the hydraulic motor; the speed reducer includes a speed reducer housing fixedly connected to the support body of the small excavating crusher, a speed reducer output shaft rotatably arranged in the speed reducer housing, and a speed reducer input shaft connected to the output shaft of the hydraulic motor. The speed reducer output shaft and the speed reducer input shaft are connected through a gear pair; an inner hole of the execution device power input shaft is axially opened at the center of the top end of the execution device power input shaft, a speed reducer connection hole that is in direct penetration with the speed reducer output shaft is opened at the lower end of the speed reducer output shaft, and an execution device power input shaft connection hole that is in direct penetration with the inner hole of the execution device power input shaft is opened at the upper end of the execution device power input shaft. The lower end of the speed reducer output shaft is detachably arranged in the inner hole of the execution device power input shaft, and the speed reducer output shaft and the execution device power input shaft are detachably connected by using a connecting nut and bolt pair through the speed reducer connection hole and the execution device power input shaft connection hole; a fixing bolt and nut pair is arranged at the bottom of the speed reducer housing, and there is a mounting flange at the top of the execution device housing. The execution device housing is detachably arranged at the bottom of the speed reducer housing through the mounting flange and by using the fixing bolt and nut pair.
[0009] The beneficial effects of the present technology are:
[0010] When the above-mentioned bamboo forest working machine that can be used for stump removal, root breaking, and rotary tillage works:
[0011] According to the requirements of the operation subject, such as moso bamboo stump removal, bamboo root breaking, and forest land rotary tillage, select the corresponding execution device;
[0012] Set the execution device housing at the bottom of the speed reducer housing through the mounting flange and by using the fixing bolt and nut pair;
[0013] Connect the speed reducer output shaft and the execution device power input shaft by using a connecting nut and bolt pair through the speed reducer connection hole and the execution device power input shaft connection hole;
[0014] Subject operation;
[0015] When it is necessary to change the operation subject, unlock the fixing bolt and nut pair and the connecting nut and bolt pair, remove the installed execution device, and install the execution device corresponding to the target operation subject to perform the corresponding subject operation.
[0016] The above-mentioned bamboo forest working machine that can be used for stump removal, root breaking, and rotary tillage uses a small excavator crusher of the breaker hammer body as the carrier, and can be optionally equipped with a stump removal device, a root breaking device, and a rotary tillage device to respectively meet the operation requirements of bamboo stump removal, bamboo root breaking, and forest land rotary tillage.
[0017] As an improvement to this technology, the output shaft of the reducer and the input shaft of the reducer are connected by a cylindrical gear pair.
[0018] In fact, the reducer in which the output shaft of the reducer and the input shaft of the reducer are connected by a cylindrical gear pair is a cylindrical gear reducer, which has a simple structure and reliable transmission.
[0019] As a further improvement to this technology, an open pin for preventing the nut from loosening is provided between the bolt and the nut.
[0020] This improvement ensures the reliability of power transmission and improves the use safety of the bamboo forest working machine that can be used for stump removal, root breaking, and rotary tillage.
[0021] As a further improvement to this technology, a peephole is provided in the upper part of the housing of the actuating device for installing and disassembling the connecting nut-bolt pair and the open pin.
[0022] This improvement makes it convenient to operate when installing and disassembling the connecting nut-bolt pair and the open pin.
[0023] As a further improvement to this technology, the actuating device is a stump removal device: the chain saw rotating shaft is the power input shaft of the stump removal device; the stump removal device includes a stump removal device housing, a horizontally arranged chain saw fixedly connected to the bottom of the stump removal device housing, and a chain saw rotating shaft with a chain saw sprocket fixedly connected to the lower end rotatably arranged in the stump removal device housing.
[0024] As another improvement to this technology, the actuating device is a root breaking device: the root breaking shaft is the power input shaft of the root breaking device; the root breaking device includes a root breaking device housing, a root breaking shaft rotatably arranged in the root breaking device housing, and a root breaking knife fixedly connected to the lower end of the root breaking shaft.
[0025] As another improvement to this technology, the actuating device is a rotary tillage device: the worm shaft is the power input shaft of the rotary tillage device; the rotary tillage device includes a rotary tillage device housing, a worm shaft rotatably arranged in the rotary tillage device housing, a turbine shaft rotatably arranged in the lower part of the rotary tillage device housing, the worm shaft and the turbine shaft are connected by a worm and worm gear pair, and a rotary tillage knife is fixedly connected to the turbine shaft. Description of the Drawings
[0026] Figure 1 is a schematic structural diagram of a stump remover;
[0027] Figure 2 is a schematic structural diagram of a root breaker;
[0028] Figure 3It is a schematic structural diagram of a rotary tiller;
[0029] Figure 4 It is a three-dimensional schematic diagram of a power device;
[0030] Figure 5 It is a schematic structural diagram of a power device;
[0031] Figure 6 It is a three-dimensional schematic diagram of a stump removal device;
[0032] Figure 7 It is a schematic structural diagram of a stump removal device;
[0033] Figure 8 It is a schematic structural diagram of the connection between the stump removal device and the power device;
[0034] Figure 9 It is a three-dimensional schematic diagram of a root-breaking device;
[0035] Figure 10 It is a schematic structural diagram of a root-breaking device;
[0036] Figure 11 It is a schematic structural diagram of the connection between the root-breaking device and the power device;
[0037] Figure 12 It is a three-dimensional schematic diagram of a rotary tilling device;
[0038] Figure 13 It is a schematic structural diagram of a rotary tilling device;
[0039] Figure 14 It is Figure 13 The A-A sectional view of removing the rotary tiller blades;
[0040] Figure 15 It is a schematic structural diagram of the connection between the rotary tilling device and the power device;
[0041] Figure 16 It is Figure 3 The partial enlarged view of A. Detailed implementation manners
[0042] The following further explains the present technology in conjunction with the accompanying drawings:
[0043] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 16A bamboo forest working machine that can be used for stump removal, root breaking, and rotary tillage. Using the small excavating crusher 11 without the breaker hammer body as the carrier 1, it includes a power device 2 arranged on the support body 12 of the small excavating crusher, and an execution device detachably arranged on the power device 2 and powered mechanically by the power device 2. The execution device is divided into a stump removal device 5, a root breaking device 4, and a rotary tillage device 3. The execution device includes at least an execution device housing.
[0044] See also Figure 4 , Figure 5 As shown, the power device 2 includes a hydraulic motor 21 powered hydraulically by the small excavating crusher 11, and a speed reducer 8 fixed to the support body 12 of the small excavating crusher and inputting mechanical power by the hydraulic motor 21.
[0045] The speed reducer 8 includes a speed reducer housing 29 fixed to the support body 12 of the small excavating crusher, a speed reducer output shaft 214 rotatably arranged in the speed reducer housing 29, and a speed reducer input shaft 81 connected to the output shaft 22 of the hydraulic motor. The speed reducer output shaft 214 and the speed reducer input shaft 81 are connected by a gear pair; the hydraulic motor 21 is fixed to the speed reducer 8.
[0046] See also Figures 6 - 15 As shown:
[0047] An inner hole of the execution device power input shaft is axially opened at the center of the top end of the execution device power input shaft. A reducer connection hole 215 that is orthogonally penetrated with the reducer output shaft 214 is opened at the lower end of the reducer output shaft 214. An execution device power input shaft connection hole that is orthogonally penetrated with the inner hole of the execution device power input shaft is opened at the upper end of the execution device power input shaft. The lower end of the reducer output shaft 214 is detachably arranged in the inner hole of the execution device power input shaft. The reducer output shaft 214 and the execution device power input shaft are detachably connected using connecting nut and bolt pairs 62, 61 through the reducer connection hole 215 and the execution device power input shaft connection hole; A fixed bolt and nut pair 213 is fixed to the bottom of the speed reducer housing 29. There is a mounting flange 9 at the top of the execution device housing. The execution device housing is detachably arranged at the bottom of the speed reducer housing 29 through the mounting flange 9 and the fixed bolt and nut pair 213.
[0048] Remove the breaker hammer body from the breaker of the existing small excavating crusher, and retain the support body 12 of the breaker as the installation basis of the power device 2. Use the hydraulic pipeline (not shown in the figure) of the small excavating crusher to provide hydraulic power for the hydraulic motor 21 of the power device 2.
[0049] The power device 2 includes a hydraulic motor 21 of the existing technology and a speed reducer 8 driven by the hydraulic motor 21.
[0050] The reducer 8 is a vertical cylindrical gear reducer. In this example, the output shaft 22 of the hydraulic motor and the input shaft 81 of the reducer are combined into one. The specific implementation method is as follows: The reducer housing 29 includes an outer wall 82 and a housing cover 27 fixedly connected below the outer wall 82. There is an ear 216 with a light hole 217 opened on the outer wall 82. The reducer 8 is installed on the small excavator crusher support body 12 through the light hole 217 and using bolts 218. The hydraulic motor 21 is installed on the reducer housing 29. The output shaft 22 of the hydraulic motor enters the reducer housing 29 through the outer wall of the reducer housing 29; the large gear 24 is connected and installed on the output shaft 22 of the hydraulic motor through a key 28, and an axial limit is provided by using a shaft sleeve 23 and a baffle 25 and an end screw 26 arranged between the baffle 25 and the output shaft 22 of the hydraulic motor; the output shaft 214 of the reducer is rotatably arranged in the reducer housing 29. The small gear 211 meshing with the large gear 24 is connected and installed on the output shaft 214 of the reducer through a key 212. The bearing 210 provides rotational support for the output shaft 214 of the reducer and is axially limited by a shaft sleeve 231 and the bearing 210. Six pairs of fixed bolt and nut pairs 213 (nuts not shown) are fixedly connected to the housing cover 27 for rigidly connecting the actuating device and the power device 2.
[0051] The actuating device is a stump removal device 5: A bamboo forest working machine equipped with a stump removal device 5 that can be used for stump removal, root breaking, and rotary tillage is also called a stump remover.
[0052] The vertical chain saw rotating shaft 53 is the power input shaft of the stump removal device; the stump removal device 5 includes a stump removal device housing 51, a horizontally arranged chain saw fixedly connected to the bottom of the stump removal device housing 51, and the chain saw rotating shaft 53 with a chain saw sprocket 54 fixedly connected to the lower end is rotatably arranged in the stump removal device housing 51. A chain saw housing 510 is fixedly connected below the stump removal device housing 51, a chain saw bottom plate 55 is fixedly connected below the chain saw housing 510, and a chain saw rotating shaft bearing 52 embedded in the stump removal device housing 51 provides rotational support for the chain saw rotating shaft 53. A sprocket 54 is axially fixedly connected to the lower end of the chain saw rotating shaft 53 by screws 56. The sprocket 54 is located in the cavity between the chain saw housing 510 and the chain saw bottom plate 55. The chain saw with the sprocket 54 as the driving wheel is a prior art, so it is briefly described as follows: A saw chain plate 512 is fixedly connected between the chain saw housing 510 and the chain saw bottom plate 55. The saw chain plate 512 is coplanar with the sprocket 54, and a chain saw chain tooth 513 is movably arranged on the saw chain plate 512 and the sprocket 54.
[0053] An inner hole 57 of the chain saw rotating shaft is axially formed at the top center of the chain saw rotating shaft 53. The lower end of the output shaft 214 of the speed reducer is detachably arranged in the inner hole 57 of the chain saw rotating shaft. A connecting hole 58 of the chain saw rotating shaft that is orthogonally intersected with the chain saw rotating shaft 53 and corresponds to the connecting hole 215 of the speed reducer is formed in the upper part of the chain saw rotating shaft 53. The connecting nut and bolt pair 62, 61 is detachably arranged in the connecting hole 215 of the speed reducer and the connecting hole 58 of the chain saw rotating shaft. A split pin 63 for preventing the nut 62 from loosening is arranged between the bolt 61 and the nut 62. A mounting flange 9 of the stump removal device is provided at the top of the stump removal device housing 51. The stump removal device housing 51 is detachably arranged at the bottom of the speed reducer housing 29 through the clearance holes 91 formed in the mounting flange 9 of the stump removal device and by using the fixing bolt and nut pair 213. A viewing hole is formed in the upper part of the stump removal device housing 51 for mounting the connecting nut and bolt pair 62, 61 and the split pin 63.
[0054] The actuating device is the root breaking device 4: A bamboo forest working machine equipped with the root breaking device 4 and capable of performing stump removal, root breaking, and rotary tillage is also called a root breaker.
[0055] The vertical root breaking shaft 46 is the power input shaft of the root breaking device. The root breaking device 4 includes a root breaking device housing 41, a root breaking shaft 46 rotatably arranged in the root breaking device housing 41, and a root breaking knife 47 fixedly connected to the lower end of the root breaking shaft 46. The root breaking shaft bearing 44 embedded in the root breaking device housing 41 provides rotational support for the root breaking shaft 46 and is limited by snap rings 45 clamped on the root breaking shaft 46 on both the upper and lower sides of the root breaking shaft bearing 44. The root breaking knife 47 is a prior art and will not be elaborated here.
[0056] An inner hole 42 of the root breaking shaft is axially formed at the top center of the root breaking shaft 46. The lower end of the output shaft 214 of the speed reducer is detachably arranged in the inner hole 42 of the root breaking shaft. A connecting hole 43 of the root breaking shaft that is orthogonally intersected with the root breaking shaft 46 and corresponds to the connecting hole 215 of the speed reducer is formed in the upper part of the root breaking shaft 46. The connecting nut and bolt pair 62, 61 is detachably arranged in the connecting hole 215 of the speed reducer and the connecting hole 43 of the root breaking shaft. A mounting flange 9 of the root breaking device is provided at the top of the root breaking device housing 41. The root breaking device housing 41 is detachably arranged at the bottom of the speed reducer housing 29 through the clearance holes 91 formed in the mounting flange 9 of the root breaking device and by using the fixing bolt and nut pair 213. A viewing hole is formed in the upper part of the root breaking device housing 41 for mounting the connecting nut and bolt pair 62, 61 and the split pin 63.
[0057] The actuating device is the rotary tillage device 3: A bamboo forest working machine equipped with the rotary tillage device 3 and capable of performing stump removal, root breaking, and rotary tillage is also called a rotary tiller.
[0058] The vertical worm shaft 32 is the power input shaft of the rotary tillage device 3; in fact, the rotary tillage device 3 is a worm and gear reducer with rotary tillage blades 37 fixedly connected to both ends of the output shaft. The worm and gear reducer is a prior art, so it is briefly described as follows: The rotary tillage device 3 includes a rotary tillage device housing 31, a worm shaft 32 rotatably arranged inside the rotary tillage device housing 31, a turbine shaft 35 rotatably arranged at the lower part of the rotary tillage device housing 31. The worm shaft 32 and the turbine shaft 35 are connected by a worm and gear pair. A rotary tillage blade 37 is fixedly connected to the turbine shaft 35. A pair of worm shaft bearings 33 embedded in the rotary tillage device housing 31 provide rotational support for the worm shaft 32. Worm shaft bearing retaining rings 38, 310 are arranged between the worm shaft bearings 33 and the shoulder of the worm shaft 32 for axially limiting the turbine shaft 35. The turbine 34 meshing with the worm shaft 32 is fixedly connected to the turbine shaft 35 through a key 39. The rotary tillage blade 37 is a prior art and will not be elaborated here.
[0059] An inner hole of the worm shaft is axially opened at the center of the top end of the worm shaft 32. The lower end of the reducer output shaft is arranged inside the inner hole of the worm shaft. A worm shaft connection hole that is orthogonally penetrated with the worm shaft and corresponds to the reducer connection hole is opened at the upper part of the worm shaft; Connecting nut and bolt pairs 62, 61 are detachably arranged in the reducer connection hole 215 and the worm shaft connection hole; There is a rotary tillage device mounting flange 9 at the top of the rotary tillage device housing 31. Through the light holes 91 opened on the rotary tillage device mounting flange 9 and using fixing bolt and nut pairs 213, the rotary tillage device housing 31 is detachably arranged at the bottom of the reducer housing 29; A viewing hole is opened at the upper part of the rotary tillage device housing 31 for installing the connecting nut and bolt pairs 62, 61 and the split pin 63.
[0060] When the above bamboo forest working machine that can be used for stump felling, root breaking, and rotary tillage works:
[0061] According to the requirements of the operation subject, such as moso bamboo stump felling, bamboo root breaking, and forest land rotary tillage, select the corresponding execution device;
[0062] Through the mounting flange and using the fixing bolt and nut pairs, set the execution device housing at the bottom of the reducer housing;
[0063] Use the connecting nut and bolt pairs to connect the reducer output shaft and the execution device power input shaft through the reducer connection hole and the execution device power input shaft connection hole;
[0064] Subject operation;
[0065] When it is necessary to change the operation subject, unlock the fixing bolt and nut pairs and the connecting nut and bolt pairs, remove the split pin, remove the installed execution device, and install the execution device corresponding to the target operation subject to perform the corresponding subject operation.
[0066] The beneficial effects of this technology are:
[0067] The above-mentioned bamboo forest working machine that can be used for stump cutting, root breaking, and rotary tillage uses a small excavating crusher of the crusher hammer body as the carrier, and can be optionally equipped with a stump cutting device, a root breaking device, and a rotary tillage device to meet the operation subject requirements of moso bamboo stump cutting, bamboo root breaking, and forest land rotary tillage respectively.
Claims
1. A bamboo forest working machine that can be used for stump removal, root breaking, and rotary tillage, including a small excavating crusher with the hammer body of the crusher removed. Its characteristics are as follows: It also includes a power device arranged on the support body of the small excavating crusher, and an execution device that is detachably arranged on the power device and is provided with mechanical power by the power device, including a stump removal device, a root breaking device, and a rotary tillage device. The execution device at least includes an execution device housing; the power device includes a hydraulic motor that provides hydraulic power by the small excavating crusher, and a speed reducer that is fixedly connected to the support body of the small excavating crusher and inputs mechanical power by the hydraulic motor; the speed reducer includes a speed reducer housing fixedly connected to the support body of the small excavating crusher, a speed reducer output shaft rotatably arranged in the speed reducer housing, and a speed reducer input shaft connected to the output shaft of the hydraulic motor. The speed reducer output shaft and the speed reducer input shaft are connected through a gear pair; an inner hole of the execution device power input shaft is axially opened at the center of the top end of the execution device power input shaft. A speed reducer connection hole that is in positive intersection with the speed reducer output shaft is opened at the lower end of the speed reducer output shaft. An execution device power input shaft connection hole that is in positive intersection with the inner hole of the execution device power input shaft is opened at the upper end of the execution device power input shaft. The lower end of the speed reducer output shaft is detachably arranged in the inner hole of the execution device power input shaft. The speed reducer output shaft and the execution device power input shaft are detachably connected by using a connecting nut and bolt pair through the speed reducer connection hole and the execution device power input shaft connection hole; a fixing bolt and nut pair is arranged at the bottom of the speed reducer housing. There is a mounting flange at the top of the execution device housing. The execution device housing is detachably arranged at the bottom of the speed reducer housing through the mounting flange and by using the fixing bolt and nut pair. The speed reducer output shaft and the speed reducer input shaft are connected through a cylindrical gear pair; a split pin is arranged between the bolt and the nut to prevent the nut from loosening. When the execution device is a stump removal device: the chain saw rotating shaft is the power input shaft of the stump removal device; the stump removal device includes a stump removal device housing, a horizontally arranged chain saw fixedly connected to the bottom of the stump removal device housing, and a chain saw rotating shaft with a chain saw sprocket fixedly connected to the lower end rotatably arranged in the stump removal device housing. When the execution device is a root breaking device: the root breaking shaft is the power input shaft of the root breaking device; the root breaking device includes a root breaking device housing, a root breaking shaft rotatably arranged in the root breaking device housing, and a root breaking knife fixedly connected to the lower end of the root breaking shaft. When the execution device is a rotary tillage device: the worm shaft is the power input shaft of the rotary tillage device; the rotary tillage device includes a rotary tillage device housing, a worm shaft rotatably arranged in the rotary tillage device housing, a turbine shaft rotatably arranged at the lower part of the rotary tillage device housing. The worm shaft and the turbine shaft are connected through a worm and worm gear pair, and a rotary tillage knife is fixedly connected to the turbine shaft. When the bamboo forest working machine that can be used for stump cutting, root breaking, and rotary tillage is working: Select the corresponding actuating device according to the requirements of the operation subject; Set the actuating device housing at the bottom of the reducer housing through the mounting flange and using the fixing bolt and nut pair; Connect the output shaft of the reducer and the power input shaft of the actuating device through the connecting nut and bolt pair, through the reducer connection hole and the power input shaft connection hole of the actuating device; When it is necessary to change the operation subject, unlock the fixing bolt and nut pair and the connecting nut and bolt pair, remove the installed actuating device, and install the actuating device corresponding to the target operation subject to perform the corresponding subject operation.
2. The bamboo forest working machine according to claim 1, which can be used for stump cutting, root breaking, and rotary tillage, characterized in that, a peephole is provided at the upper part of the actuating device housing for installing and disassembling the connecting nut and bolt pair and the split pin.
Citation Information
Patent Citations
Bamboo stump crusher
CN102696450A
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CN209768218U