Cutting head cutting device and regulation and control method

Abstract

The invention relates to the technical field of cutting heads, in particular to a cutting head cutting device and a regulation and control method.The cutting head cutting device comprises a chain plate and a chain wheel, a chain-shaped blade is installed on the chain wheel and the chain plate, the cutting head cutting device further comprises a saw assembly support, a saw guide seat is assembled on the saw assembly support, and a saw guide plate is slidably arranged on the saw guide seat; the saw guide plate is connected with the chain plate; the saw further comprises a displacement assembly and a locking assembly. The displacement assembly is used for driving the saw guide plate to move so as to adjust the tension degree of the chain-shaped blade. The locking assembly is used for locking the saw guide plate; the regulation and control method comprises the steps of tightness regulation and locking control. The device has the advantages that the chain-shaped blade is convenient to tighten, adjust and replace, and the reliability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of felling heads, and in particular to a felling head cutting device and a regulating method. Background Art

[0002] The felling head is the core part of the felling machine, with the help of the felling head, the felling machine can cut down and remove branches of trees. The principle is that the chain blade is driven by the sprocket to rotate at high speed, and then the wood is cut. Therefore, the chain blade needs to be maintained after a period of use. During maintenance, the clamping assembly of the chain blade is directly related to the convenience of maintenance operation and the stability of the high-speed operation of the chain blade. The clamping assembly of the traditional chain blade is mostly tightened by manually tightening the chain of the chain blade and then tightened by bolts. During the high-speed cutting process of the chain blade, not only is the vibration large, but the stress in all directions is also large. Therefore, the chain often loosens and causes operation failures. The root cause is that the clamping assembly of the chain blade is loosened due to vibration and stress, resulting in the loosening of the chain blade. Summary of the invention

[0003] In view of the above shortcomings, the present invention provides a felling head cutting device and a control method which are convenient to adjust the tension of a chain-shaped blade and have good use effect.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme:

[0005] A felling head cutting device, comprising a chain plate and a sprocket, a chain-like blade mounted on the sprocket and the chain plate, and a saw assembly support, wherein a saw guide seat is mounted on the saw assembly support, and a saw guide plate is slidably arranged on the saw guide seat; the saw guide plate is connected to the chain plate; a displacement assembly and a locking assembly are further provided, wherein the displacement assembly is used to drive the saw guide plate to move so as to adjust the tension of the chain-like blade; and the locking assembly is used to lock the saw guide plate;

[0006] The displacement assembly includes a tensioning cam and a spring adjustment assembly, the saw guide seat is provided with a tensioning shaft adjustment waist-shaped hole; a tensioning shaft is movably provided in the tensioning shaft adjustment waist-shaped hole; the tensioning cam and the saw guide plate are respectively arranged on both sides of the saw guide seat; the tensioning shaft passes through the tensioning cam and the tensioning shaft adjustment waist-shaped hole, and its end is connected to the saw guide plate; the displacement assembly drives the tensioning shaft to move through the tensioning cam, thereby promoting the displacement of the saw guide plate and the chain plate, so as to realize the tensioning adjustment of the chain-like blade;

[0007] The spring adjustment assembly is provided with an adjustment screw, the lower end of which is connected to the tensioning cam, and the rotation adjustment of the tensioning cam is achieved by telescopic adjustment of the adjustment screw.

[0008] Optionally, the spring adjustment assembly also includes a spring support and a spring; the spring support is assembled and fixed on the saw assembly support; a guide seat and the spring are provided on the spring support, and the adjusting screw passes through the guide seat and is telescopically arranged; an adjusting nut is provided on the adjusting screw, and the spring is sleeved on the adjusting screw, and the spring is arranged between the guide seat and the adjusting nut.

[0009] Optionally, the tensioning cam is designed with a plurality of adjusting screw mounting holes, and the adjusting screw is connected to the tensioning cam through the adjusting screw mounting holes.

[0010] Optionally, it also includes a spacer sleeve, a transition block and a locking bolt; the spacer sleeve and the transition block are fixed on the tensioning cam by the locking bolt, and one end of the adjusting screw is connected to the transition block.

[0011] Optionally, the locking assembly is a chain plate tensioning cylinder, an end limit block is provided at the outer end of the tensioning shaft, the chain plate tensioning cylinder is arranged between the tensioning cam and the end limit block, and the tensioning cam is pressed and fixed by extending the chain plate tensioning cylinder.

[0012] Optionally, a guide key is provided on the saw guide seat, and a guide key matching groove is provided on the saw guide plate corresponding to the guide key. The saw guide plate is gap-matched with the saw guide seat and can move along the guide key.

[0013] Optionally, an oil groove is provided on the saw guide seat, and the oil groove is arranged on the side of the contact surface between the saw guide plate and the saw guide seat; the oil groove is connected to an oil groove oil inlet pipe; and a lubricating oil guide hole is provided on the saw guide plate corresponding to the oil groove.

[0014] Optionally, it also includes a chainsaw motor, which is mounted on a saw guard assembly, and the saw assembly support is assembled with a deep groove ball bearing and then mounted on the chain saw motor head, and a saw guide seat is assembled on the saw assembly support; it also includes a chainsaw cylinder, and a chainsaw cylinder mounting support is provided on the saw mounting bracket of the saw guard assembly, the chain saw cylinder is installed between the chain saw cylinder mounting support and the saw guide seat, the head pin shaft is assembled on the chain saw cylinder mounting support, and the tail pin shaft is assembled on the saw guide seat.

[0015] A method for regulating a felling head chain blade, using a felling head cutting device as described above, the regulating method comprising:

[0016] The tension is adjusted by adjusting the adjusting nut on the adjusting screw through the spring adjustment assembly, so that the spring installed on the adjusting screw is compressed, the spring is subjected to pre-tightening force, the adjusting screw slides in the guide seat, and the tensioning cam is driven to rotate, thereby causing the saw guide plate and the chain plate to move, thereby realizing the tension adjustment of the chain-like blade.

[0017] Optionally, it also includes a locking control, which realizes the tightening of the tightening cam by extending and retracting the chain plate tightening cylinder, thereby achieving the locking and fixation of the chain-shaped blade.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention can adjust the displacement of the chain plate through the spring adjustment component to achieve rapid tightness adjustment and replacement of the chain-shaped blade, with good adjustment reliability and convenient operation; at the same time, by providing a chain plate tensioning cylinder, the adjusted chain plate can be clamped and fixed, which significantly improves the stability of the chain plate and prevents the chain-shaped blade from loosening when cutting wood at high speed, thereby affecting the cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the rear three-dimensional structure of the saw protection assembly of the present invention;

[0023] Figure 3 is a schematic diagram of the front three-dimensional structure of the saw protection assembly of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the saw installation assembly and the chain saw cylinder hydraulic assembly after being assembled;

[0025] Figure 5 It is a structural schematic diagram of the saw installation assembly of the present invention;

[0026] Figure 6 yes Figure 5 A partial cross-sectional view of

[0027] Figure 7 yes Figure 1 Schematic diagram of the local structure;

[0028] Figure 8 yes Figure 1 Schematic diagram of the local structure;

[0029] Fig. 9 yes Figure 5 The schematic diagram of the structure after the chain tensioning cylinder is removed;

[0030] Fig.10 yes Fig. 9 The schematic diagram of the structure after the tensioning cam is removed;

[0031] Fig.11 yes Figure 5 Schematic diagram of the front structure;

[0032] Fig.12 It is a schematic diagram of the structure after the spring adjustment component and the tensioning cam are assembled;

[0033] Fig.13 It is a structural schematic diagram of the saw guide seat of the present invention. DETAILED DESCRIPTION

[0034] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inside", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] A felling head cutting device, such as Figures 1 to 13As shown, it includes a saw protection component 1, a saw mounting assembly 2, and a chain saw oil cylinder hydraulic component 3. The saw protection component 1 is composed of a saw mounting bracket 11, an end protection cover 12, a rubber buffer pad 13, a chain saw oil cylinder mounting support 14, a chain saw motor mounting plate 15, a chain saw motor protection cover plate 16, and a plate connector 17; the saw mounting bracket 11 of the saw protection component 1 is mounted on the left side of the felling head frame, the end protection cover 12 is mounted on the saw mounting bracket 11, the rubber buffer pad 13 is mounted between the saw mounting bracket 11 and the end protection cover 12, the chain saw oil cylinder mounting support 14 is mounted on the upper part of the saw mounting bracket 11, the chain saw motor mounting plate 15 is mounted on the chain saw motor mounting hole of the saw mounting bracket 11, the chain saw motor protection cover plate 16 is mounted on the left rear end of the saw mounting bracket 11, and the plate connector 17 is mounted on the inner back plate of the saw mounting bracket 11. The structural parts in the saw protection assembly 1 of the present invention are made of high-strength steel and are impact-resistant and wear-resistant; a rubber buffer pad 13 is installed between the saw mounting bracket 11 and the end protection cover 12, which can effectively buffer the end protection cover 12 when it is hit and prevent the protection assembly from being deformed.

[0038] The saw installation assembly 2 includes a chain saw motor 201, a saw component support 202, a deep groove ball bearing 203, a bearing end cover 204, a saw guide seat 205, a connecting flange 206, a sprocket 207, a key 208, a saw guide plate 209, a guide key 210, a chain plate 211, a chain blade 212, a chain plate clamping block 213, a tensioning cam 214, a chain plate tensioning cylinder 215, and a tensioning shaft 216; the chain saw motor 201 of the saw installation assembly 2 is installed on the chain saw motor mounting plate 15 on the saw protection component 1, the saw component support 202 and the deep groove ball bearing 203 are assembled and then sleeved on the head of the chain saw motor 201, the bearing end cover 204 is assembled on the deep groove ball bearing 203 at the end of the chain saw motor 201 to limit the position, and the saw guide seat 205 is assembled on the saw component support 202 and supports the deep groove ball bearing 2 03 outer ring prevents it from moving in series, the connecting flange 206 is assembled on the driving shaft of the chain saw motor 201 by cooperating with the key 208, the sprocket 207 is assembled on the driving shaft of the chain saw motor 201 and is tightly attached to the connecting flange 206 by cooperating with the key 208, the key 208 is assembled between the driving shaft of the chain saw motor 201, the connecting flange 206 and the sprocket 207, the saw guide plate 209 is assembled on the saw guide seat 205 by cooperating with the guide key 210, the guide key 210 is assembled between the saw guide seat 205 and the saw guide plate 209, the chain plate 211 is fixed on the saw guide plate 209, the chain blade 212 is installed on the sprocket 207 and the chain plate 211, the chain saw motor 201 drives the sprocket 207 to rotate, and the chain blade 212 assembled on the sprocket 207 and the chain plate 211 realizes high-speed sawing under the drive of the sprocket 207;

[0039] like Fig.11As shown, the chain plate pressing block 213 tightens the chain plate 211 to the saw guide plate 209 through the screw 213-1; in order to achieve the tension adjustment and locking fixation of the chain-like blade 212, a displacement component and a locking component are provided in this embodiment, such as Figures 9-10 As shown, the displacement assembly includes a tensioning cam 214, and a tensioning shaft adjusting waist-shaped hole 216-2 is provided on the saw guide seat 205; a tensioning shaft 216 is movably provided in the tensioning shaft adjusting waist-shaped hole 216-2; the tensioning cam 214 and the saw guide plate 209 are respectively arranged on both sides of the saw guide seat 205; the tensioning shaft passes through the tensioning cam 214 and the tensioning shaft adjusting waist-shaped hole, and its end is connected to the saw guide plate 209; the displacement assembly drives the tensioning shaft 216 to displace through the tensioning cam 214, thereby promoting the displacement of the saw guide plate 209 and the chain plate 211, thereby realizing the tensioning and replacement of the chain blade 212.

[0040] In this embodiment, in order to improve the sliding smoothness and reliability of the saw guide plate 209, a guide key 210 is provided on the saw guide seat 205, and the saw guide plate 209 is provided with a guide key matching groove 209-1 corresponding to the guide key 210. The saw guide plate 209 is loosely matched with the saw guide seat 205 and can move along the guide key 210.

[0041] To facilitate adjustment, the displacement assembly also includes a spring adjustment assembly, which includes an adjusting screw 217, a spring support 219, and a spring 218; the spring support 219 is fixed to the saw assembly support 202 through a bracket assembly; a guide seat 217-1 and the spring 218 are provided on the spring support 219, and the adjusting screw 217 can be telescopically arranged through the guide seat 217-1; an adjusting nut is provided on the adjusting screw 217, and a double nut is used in this embodiment. The adjusting screw 217 is sleeved with the spring 218, and the spring 218 is arranged between the guide seat and the adjusting nut; the lower end of the adjusting screw 217 is connected to the tensioning cam 214; by adjusting the double nut on the adjusting screw 217, the spring 218 installed on the adjusting screw 217 is compressed, the spring 218 is subjected to a pre-tightening force, the adjusting screw 217 slides in the guide seat, and the tensioning cam 214 is driven to rotate. Since the tensioning cam 214 is an eccentric structure, when the tensioning cam 214 rotates clockwise, it will push the tensioning shaft 216 to move to the left, and the tensioning shaft 216 will push the saw guide plate 209 to move to the left along the guide key, so that the chain-shaped knife 212 can be tensioned. In this embodiment, the tensioning cam 214 is designed with 4 adjustment screw mounting holes, and the adjustment screw 217 can be installed in the corresponding mounting hole according to the actual installation swing angle. The adjustment screw 217 is connected to the tensioning cam 214 through the adjustment screw mounting hole. Fig.12 As shown, it also includes a spacer, a transition block and a locking bolt; the spacer and the transition block are fixed on the tensioning cam 214 through the locking bolt, and one end of the adjusting screw 217 is connected to the transition block.

[0042] In this embodiment, the locking assembly is a chain plate tensioning oil cylinder 215, and an end stopper 216-1 is provided at the outer end of the tensioning shaft 216. In this embodiment, the chain plate tensioning oil cylinder 215 is assembled on the tensioning shaft 216 and fits the tensioning cam 214, that is, it is arranged between the tensioning cam 214 and the end stopper 216-1, and the tensioning cam 214 is pressed and fixed by the extension of the chain plate tensioning oil cylinder 215. For example, in this embodiment, the chain plate tensioning oil cylinder 215 applies a tensioning force under the regulation of the hydraulic control system when the cutting device is working (cutting wood), so that the tensioning shaft 216 tightens the chain plate 211, and the purpose is to prevent the chain blade 212 from loosening when cutting wood at high speed and affecting the cutting efficiency. When the cutting device is not working, the tensioning oil cylinder 215 has no tensioning force.

[0043] In this embodiment, in order to achieve lubrication of the chain-like blade 212, an oil groove 205-2 is provided on the saw guide seat 205, and the oil groove is arranged on the side of the contact surface between the saw guide plate 209 and the saw guide seat 205; the oil groove is connected to an oil groove oil inlet pipe 205-1; and a lubricating oil guide hole 209-2 is provided on the saw guide plate 209 corresponding to the oil groove.

[0044] The chain saw oil cylinder hydraulic assembly 3 is composed of a chain saw oil cylinder 31, a head pin shaft 32, a tail pin shaft 33, a chain saw oil cylinder oil inlet pipe 34, a chain saw oil cylinder oil return pipe 35, a chain saw lubrication oil delivery pipe 36, and a tensioning oil cylinder oil delivery pipe 37. A chain saw oil cylinder mounting support 14 is provided on the saw mounting bracket 11 of the saw protection assembly 1, the chain saw oil cylinder 31 is installed between the chain saw oil cylinder mounting support 14 and the saw guide seat 205, the head pin shaft 32 is assembled on the chain saw oil cylinder mounting support 14, and the tail pin shaft 33 is assembled on the saw guide seat 205. After being assembled to the machine, the chainsaw cylinder 31 of this embodiment has a built-in displacement sensor. When the four sets of blades of the felling head clamp the wood, the driving cylinder installed on the four sets of blades collects the wood diameter data through the built-in displacement sensor. The data is transmitted to the chainsaw cylinder 31 through the electronic control system on the felling head. The chainsaw cylinder 31 pushes the saw mounting assembly 2 to realize wood cutting. After the wood is cut, the saw mounting assembly 2 will automatically retract, and the felling head continues to transport the specified length of wood to complete the reciprocating cutting.

[0045] The cutting device is equipped with an automatic lubrication system for cutting, and the felling head is equipped with a lubricating oil tank with a built-in sensor. When cutting wood, the lubricating oil is delivered to the saw guide seat 205 through the chain saw lubricating oil delivery pipe 36 through the electronic control system, and the lubricating oil is delivered to the chain blade 212 through the lubricating oil guide hole 209-2, thereby achieving lubrication of the chain blade 212. When the cutting device is not working, the lubricating oil is not output. This design can significantly improve cutting efficiency and reduce cutting failures.

[0046] A method for regulating a felling head chain blade, using a felling head cutting device as described above, the regulating method comprising:

[0047] The tension is adjusted by adjusting the adjustment nut on the adjustment screw through the spring adjustment assembly, so that the spring installed on the adjustment screw is compressed, the spring is subjected to preload, the adjustment screw slides in the guide seat, and the tension cam is driven to rotate, thereby causing the saw guide plate and the chain plate to move, thereby achieving tension adjustment of the chain blade. This solution can achieve fast, convenient and reliable adjustment when adjusting the tension of the chain blade.

[0048] Optionally, it also includes locking control, through the extension and retraction of the chain plate tensioning oil cylinder, the tensioning cam is tightened, and the chain-shaped blade is locked and fixed. By using the hydraulic control system, high-strength tensioning force can be achieved, which significantly improves the locking and fixing effect.

Claims

1. A felling head cutting device, comprising a chain plate and a sprocket, a chain-shaped blade mounted on the sprocket and the chain plate, characterized in that: It also includes a saw assembly support, on which a saw guide seat is mounted, on which a saw guide plate is slidably provided; the saw guide plate is connected to the chain plate; it also includes a displacement assembly and a locking assembly, the displacement assembly is used to drive the saw guide plate to move so as to adjust the tension of the chain-shaped blade; the locking assembly is used to lock the saw guide plate; The displacement assembly includes a tensioning cam and a spring adjustment assembly, the saw guide seat is provided with a tensioning shaft adjustment waist-shaped hole; a tensioning shaft is movably provided in the tensioning shaft adjustment waist-shaped hole; the tensioning cam and the saw guide plate are respectively arranged on both sides of the saw guide seat; the tensioning shaft passes through the tensioning cam and the tensioning shaft adjustment waist-shaped hole, and its end is connected to the saw guide plate; the displacement assembly drives the tensioning shaft to move through the tensioning cam, thereby promoting the displacement of the saw guide plate and the chain plate, so as to realize the tensioning adjustment of the chain-like blade; The spring adjustment assembly is provided with an adjustment screw, the lower end of which is connected to the tensioning cam, and the rotation adjustment of the tensioning cam is achieved by telescopic adjustment of the adjustment screw.

2. A felling head cutting device according to claim 1, characterized in that: The spring adjustment assembly also includes a spring support and a spring; the spring support is assembled and fixed on the saw assembly support; a guide seat and the spring are provided on the spring support, and the adjustment screw passes through the guide seat and is telescopically arranged; an adjustment nut is provided on the adjustment screw, and the spring is sleeved on the adjustment screw, and the spring is arranged between the guide seat and the adjustment nut.

3. A felling head cutting device according to claim 2, characterized in that: The tensioning cam is designed with a plurality of adjusting screw mounting holes, and the adjusting screw is connected to the tensioning cam through the adjusting screw mounting holes.

4. A felling head cutting device according to claim 2, characterized in that: It also includes a spacer, a transition block and a locking bolt; the spacer and the transition block are fixed on the tensioning cam through the locking bolt, and one end of the adjusting screw is connected to the transition block.

5. A felling head cutting device according to claim 1, characterized in that: The locking assembly is a chain plate tensioning cylinder, an end limit block is provided at the outer end of the tensioning shaft, the chain plate tensioning cylinder is arranged between the tensioning cam and the end limit block, and the tensioning cam is pressed and fixed by extending the chain plate tensioning cylinder.

6. A felling head cutting device according to claim 1, characterized in that: The saw guide seat is provided with a guide key, and the saw guide plate is provided with a guide key matching groove corresponding to the guide key. The saw guide plate is gap-matched with the saw guide seat and can move along the guide key.

7. A felling head cutting device according to claim 1, characterized in that: The saw guide seat is provided with an oil groove, which is arranged on one side of the contact surface between the saw guide plate and the saw guide seat; the oil groove is connected with an oil groove oil inlet pipe; and the saw guide plate is provided with a lubricating oil guide hole corresponding to the oil groove.

8. A felling head cutting device according to claim 1, characterized in that: It also includes a chainsaw motor, which is mounted on a saw protection assembly. The saw assembly support and the deep groove ball bearing are assembled and then mounted on the chain saw motor head, and the saw guide seat is assembled on the saw assembly support; it also includes a chainsaw cylinder, a chainsaw cylinder mounting support is provided on the saw mounting bracket of the saw protection assembly, the chain saw cylinder is installed between the chain saw cylinder mounting support and the saw guide seat, the head pin shaft is assembled on the chain saw cylinder mounting support, and the tail pin shaft is assembled on the saw guide seat.

9. A method for regulating a chain blade of a felling head, characterized in that: Using a felling head cutting device as claimed in any one of claims 1 to 8, the control method includes: The tension is adjusted by adjusting the adjusting nut on the adjusting screw through the spring adjustment assembly, so that the spring installed on the adjusting screw is compressed, the spring is subjected to pre-tightening force, the adjusting screw slides in the guide seat, and the tensioning cam is driven to rotate, thereby causing the saw guide plate and the chain plate to move, thereby realizing the tension adjustment of the chain-like blade.

10. The method for controlling the chain blade of a felling head according to claim 9, characterized in that: The invention also comprises a locking control, which realizes the tensioning of the tensioning cam by extending and retracting the chain plate tensioning oil cylinder, thereby realizing the locking and fixing of the chain-shaped blade.

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