CN204616403U - Portable workover rig - Google Patents
Portable workover rig Download PDFInfo
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- CN204616403U CN204616403U CN201520104642.6U CN201520104642U CN204616403U CN 204616403 U CN204616403 U CN 204616403U CN 201520104642 U CN201520104642 U CN 201520104642U CN 204616403 U CN204616403 U CN 204616403U
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Abstract
The utility model provides brush cutting machine, can suppress with inappropriate state assembling rotary part, and easily carry out the assembling work of rotary part.In the structure shown here, cutting knife (11) is installed on cutter supporting member (16) by the mode being embedded in cutting knife opening portion (111) with boss (162).If cutter securing member (17) is installed on cutter supporting member (16) by the mode inserting three pin insertion holes (164) with three pins (173), then the position relationship of cutter securing member (17) and cutter supporting member (16) also becomes appropriate.Now, because three pins (173) are also the same as with boss (162) in cutting knife opening portion (111), the position relationship therefore between cutter securing member (17) and cutting knife (11) is also held properly.Therefore, it is possible to cutter securing member (17), cutting knife (11) are installed on cutter supporting member (16) with appropriate position relationship.
Description
Technical field
The utility model relates to portable workover rig, and it possesses removable rotary part (such as cutting knife) is installed on driving shaft and the structure making it rotate.
Background technology
As in a kind of brush cutting machine of portable workover rig, cutting knife being set at the leading section of elongated axle, rotating by making this cutting knife the shrub cutting operation carrying out vegetation etc.Cutting knife, in roughly circular plate shape, imposes at its peripheral part processing of putting the first edge on a knife or a pair of scissors.Figure 12 is the stereogram of the structure representing this brush cutting machine.In this brush cutting machine (portable workover rig) 300, along the longitudinal direction gear-box 310 is set in one end (front end) side of elongated action bars (axle) 301, this gear-box 310 is provided with the cutting knife (rotary part) 11 of rotation, arranges engine 302 and fuel tank 303 in the other end (rear end) side of action bars 301.The rotary motion of this engine 302 is passed to the power transmission shaft (not shown) in action bars 301, and the rotary motion of power transmission shaft is passed to the driving shaft (not shown) be arranged in gear-box 310.Because the lower end side at driving shaft installs cutting knife 11, therefore this cutting knife 11 is driven by engine 302.In addition, the transmission of the rotary motion between the bent axle of engine 302 and power transmission shaft is carried out via centrifugal clutch.The handle 304 that when arranging operation near the central authorities of the length direction of action bars 301, operating personnel grasps.Operating personnel grasps handle 304, by operating this brush cutting machine 300, the cutting knife 11 of rotation being abutted with vegetation etc., thus can carry out shrub cutting operation.
Cutting knife 11 is running stores, when its wearing and tearing, breakage, is changed by operating personnel.And, sometimes also according to job content, carry out the selection etc. of the cutting knife of most suitable knife edge shape, and install on the driving shaft on this basis and use, in this case, also carried out the replacing of cutting knife 11 by operating personnel.Therefore, this replacing operation that is configured in the coupling part between cutting knife 11 and driving shaft, gear-box 310 becomes easy structure.This structure is recorded in such as patent document 1.
In this configuration, the mode clamping cutting knife 11 between cutter securing member is with the cutter supporting member being fixed on driving shaft is installed on driving shaft from downside, and the cover of lower portion covering cutting knife 11 also from this on the downside of be installed on driving shaft state, at the lower end mounting nuts of driving shaft.Thus, cutting knife 11, cutter securing member, cover are fixed in driving shaft (cutter supporting member).Therefore, under the state pulling down this nut, carry out the replacing of cutting knife 11, again cutter securing member, cover, nut are installed thereafter, easily can carry out the replacing operation of cutting knife 11 thus.
Patent document 1: Japanese Unexamined Patent Publication 2012-249526 publication
As mentioned above, easily can carry out the replacing operation of cutting knife 11, on the other hand, sometimes then because of operating personnel with the inappropriate state of the position relationship between cutting knife 11 and driving shaft, such as the state of the center of cutting knife 11 and the misalignment of driving shaft is assembled.When making the cutting knife 11 of this bias rotate, the high vibration due to cutting knife 11 accompanying rotation, therefore cannot carry out shrub cutting operation rightly, or due to this vibration, action bars 301 also acutely resonates and bears larger burden, damages its durability sometimes.
Be difficult to obtain can suppressing with inappropriate state assembling cutting knife (rotary part) like this, and easily carry out the brush cutting machine (portable workover rig) of its assembling work.
Utility model content
The utility model carries out in view of the above problems, its objective is the utility model providing and solve the problem.
The utility model in order to solve above-mentioned problem, and is the structure of following announcement.
Portable workover rig of the present utility model, possesses: the supporting member being fixed on the driving shaft of rotation; And, between above-mentioned supporting member, clamp the securing member of rotary part from downside by being installed on above-mentioned driving shaft, above-mentioned portable workover rig makes above-mentioned rotary part rotate along with above-mentioned driving shaft, the feature of above-mentioned portable workover rig is, above-mentioned rotary part is provided with opening portion, on a side in above-mentioned supporting member, above-mentioned securing member, correspond in the region of above-mentioned opening portion when clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, be provided with to the outstanding pin in the opposing party side in above-mentioned supporting member, above-mentioned securing member.
The feature of portable workover rig of the present utility model is, the opposing party in above-mentioned supporting member, above-mentioned securing member is provided with pin insertion hole, and when clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, above-mentioned pin inserts this pin insertion hole.
The feature of portable workover rig of the present utility model is, when overlooking, is the toroidal centered by the central shaft of above-mentioned driving shaft when above-mentioned opening portion clamps above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member.
The feature of portable workover rig of the present utility model is, when clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, centered by the central shaft of above-mentioned driving shaft, is circumferentially being provided with multiple above-mentioned pin.
The feature of portable workover rig of the present utility model is, when clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, connects in multiple above-mentioned pin and above-mentioned opening portion.
The feature of portable workover rig of the present utility model is, is circumferentially equally spaced being provided with the above-mentioned pin of many groups around the above-mentioned of above-mentioned central shaft.
The feature of portable workover rig of the present utility model is, is provided with the above-mentioned pin of more than three.
The feature of portable workover rig of the present utility model is, above-mentioned supporting member or above-mentioned securing member are provided with the boss as protuberance, and when clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, this protuberance is chimeric with above-mentioned opening portion.
The feature of portable workover rig of the present utility model is, be configured to, cover is installed on above-mentioned driving shaft by the downside from above-mentioned securing member under the state clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, the lower end side mounting nuts of the above-mentioned driving shaft outstanding in the downside to above-mentioned cover, above-mentioned rotary part thus, above-mentioned securing member and above-mentioned cover are fixed in above-mentioned driving shaft, the length that when above-mentioned securing member and above-mentioned cover being installed on above-mentioned driving shaft under the state that above-mentioned opening portion is not chimeric with above-mentioned boss, the downside of the above-mentioned cover of above-mentioned driving axial is outstanding is below 2mm.
The feature of portable workover rig of the present utility model is, at least makes the outer surface of the outer surface of above-mentioned boss, above-mentioned pin, the section of any one of the inner surface of above-mentioned pin insertion hole is taper.
The feature of portable workover rig of the present utility model is, above-mentioned pin has flexible metal material to be processed to roll and the spring catch formed, and above-mentioned pin is embedded into the pin fixing hole on the side of being fixed on and being formed in above-mentioned supporting member, above-mentioned securing member.
The feature of portable workover rig of the present utility model is, above-mentioned portable workover rig makes above-mentioned rotary part be the brush cutting machine of cutting knife.
The effect of utility model
Because the utility model is as above formed, therefore, it is possible to suppress with inappropriate state assembling rotary part, and easily carry out the assembling work of rotary part.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the structure of the gear-box periphery represented in the brush cutting machine of embodiment of the present utility model.
Fig. 2 (a) is the cutaway view of the cutter supporting member used in the brush cutting machine of embodiment of the present utility model, and Fig. 2 (b) is its upward view.
Fig. 3 (a) is the partial sectional view of the region B of the Fig. 2 (a) of the cutter supporting member used in the brush cutting machine of embodiment of the present utility model, and Fig. 3 (b) is the partial sectional view of the region C of Fig. 2 (a).
Fig. 4 (a) is the cutaway view of the cutter securing member used in the brush cutting machine of embodiment of the present utility model, and Fig. 4 (b) is vertical view.
Fig. 5 is the partial sectional view of the region D of the Fig. 4 (a) of the cutter securing member used in the brush cutting machine of embodiment of the present utility model.
Fig. 6 represents in the brush cutting machine of embodiment of the present utility model, the cutaway view of the structure in gear-box when cutting knife is not properly installed.
Fig. 7 is the cutaway view of the structure of gear-box periphery in the first variation of the brush cutting machine representing embodiment of the present utility model.
Fig. 8 is the cutaway view of the structure of gear-box periphery in the second variation of the brush cutting machine representing embodiment of the present utility model.
Fig. 9 (a) is the cutaway view of the cutter securing member in the 3rd variation of the brush cutting machine of embodiment of the present utility model, and Fig. 9 (b) is its vertical view.
Figure 10 is the partial enlarged drawing of the region E of Fig. 9 (b) of cutter securing member in the 3rd variation of the brush cutting machine of embodiment of the present utility model.
Figure 11 (a) and Figure 11 (b) is the manufacture method of the cutter securing member in the 3rd variation of the brush cutting machine representing embodiment of the present utility model, Figure 11 (a) is the partial sectional view of the state representing the pin fixing hole be formed with in the region F of Fig. 9 (a), and Figure 11 (b) represents that spring catch embeds the partial sectional view of the state of pin fixing hole.
Figure 12 is the stereogram of the structure representing brush cutting machine.
In figure: 10,310-gear-box; 11-cutting knife (rotary part); 12-driving shaft; 12A-driving shaft bottom; 13,14,21-bearing; 15,22-bevel gear; 16,116,216-cutter supporting member (supporting member); 17,117,217,317-cutter securing member (securing member); 18-nut; 19,119-cover; 20-power transmission shaft; 111-cutting knife opening portion (opening portion); 161-driving shaft fixed part; 162,176-boss; 163-cutter support; 120,164,175,169-pin insertion hole; 165-boss side surfaces; 166-boss end slant surface; 167-pin insertion hole inclined plane; 168,173,177-pin; 171-driving shaft through hole; 172-cutter fastening part; 174-pin inclined plane; 178-spring catch (pin); 179-pin fixing hole; 300-brush cutting machine (portable workover rig); 301-action bars; 302-engine; 303-fuel tank; 304-handle.
Embodiment
The structure of the portable workover rig (brush cutting machine) of embodiment of the present utility model is described.Structure beyond the mounting portion of the cutting knife in this brush cutting machine is identical with the brush cutting machine such as described in patent document 1.Therefore, the structure of brush cutting machine entirety is identical with the brush cutting machine 300 shown in Figure 12, and the main structure to installing about cutting knife is described below.
Fig. 1 be in this gear-box 10 along the cutaway view of central shaft of driving shaft 12 being fixed with cutting knife (rotary part) 11.At this, in the lower end side of driving shaft 12 along the vertical direction, cutting knife 11 is installed.Therefore, cutting knife 11 rotates in the horizontal plane of Fig. 1.
In FIG, the upper right from figure of the power transmission shaft 20 being arranged on action bars 301 inside in Figure 12 extends downside left, is supported in gear-box 10 by bearing 21.Bevel gear 22 is fixed with in the front end of power transmission shaft 20.In gear-box 10, driving shaft 12 in upside, downside rotatably supports by bearing 13,14 respectively, the downside of the part supported by bearing 13 in upside is fixed with bevel gear 15.Bevel gear 22 engages with bevel gear 15, and the rotary motion of power transmission shaft 20 is passed to the driving shaft 12 arranged along the vertical direction thus.
Driving shaft 12 is outstanding to the downside of gear-box 10, is fixed with cutter supporting member (supporting member) 16 in the downside of bearing 14.Fig. 2 (a) is the cutaway view of cutter supporting member 16, and Fig. 2 (b) is the upward view observed from the downside Fig. 1.The section of Fig. 2 (a) represents the section in the A-A direction in Fig. 2 (b), represents and makes the form in Fig. 1 be rotated counterclockwise the form of 90 °.And in Fig. 2 (a) is Fig. 3 (a) by the enlarged drawing of the region B of dotted line, and the enlarged drawing of region C is Fig. 3 (b).
As shown in Figure 1, Figure 2 shown in (a) and Fig. 2 (b), the opening that driving shaft 12 is fitted and fixed with and driving shaft fixed part 161 are set at the center of cutter supporting member 16.Around driving shaft fixed part 161 on the downside of cutter supporting member 16, be provided with towards downside (right side in Fig. 2 (a)) boss 162 in convex.Boss 162 in roughly circular, is the cutter support 163 circular when looking up when looking up (Fig. 2 (b)) outside the further radial direction of boss 162.Surface, downside (right side in Fig. 2 (a)) in Fig. 1 of cutter support 163 is made up of plane, and this surface contacts with the uper side surface face of cutting knife 11 when cutting knife 11 is installed.Boss 162 is than cutter support 163 convex that side is outstanding downwards, and is set to chimeric with the circular open and (opening portion) 111, cutting knife opening portion being formed in cutting knife 11 center.Therefore, consist of under the state that this cutting knife opening portion 111 is chimeric with boss 162, the center of driving shaft 12 is consistent exactly with the center of cutting knife 11.This form becomes cutting knife 11 and is properly installed the state on cutter supporting member 16 or driving shaft 12.
In this condition, further cutter securing member (securing member) 17 is arranged on driving shaft 12 from the downside Fig. 1.Fig. 4 (a) is the cutaway view of cutter securing member 17, and Fig. 4 (b) is the vertical view observed from the upside Fig. 1.The section of Fig. 4 (a) represents the section in the A-A direction in Fig. 4 (b), and this direction is identical with the direction in Fig. 2 (a).Fig. 4 (a) represents makes the form in Fig. 1 be rotated counterclockwise the form of 90 °.And in Fig. 4 (a) is Fig. 5 by the enlarged drawing of the region D of dotted line.As shown in Fig. 1, Fig. 4 (a) and Fig. 4 (b), at the central portion of cutter securing member 17, the through driving shaft through hole 171 of driving shaft 12 is set, its most peripheral the same with cutter support 163 arrange overlook time (Fig. 1, Fig. 4 (b)) circular cutter fastening part 172.Surface, upside (right side in Fig. 4 (a)) in Fig. 1 of cutter fastening part 172 is made up of plane, and this surface contacts with the downside surface face of cutting knife 11 when cutting knife 11 is installed.And, cutter securing member 17 to correspond to above-mentioned in the inner part than cutter fastening part 172 be the boss 162 of convex to downside, and be spill to downside.Therefore, as shown in Figure 1, by making cutter securing member 17 and cutting knife 11, cutter supporting member 16 be in appropriate position relationship, thus cutting knife 11 can be clamped between cutter supporting member 16 (cutter support 163) and cutter securing member 17 (cutter fastening part 172).
Bottom (the driving shaft bottom 12A) side of driving shaft 12 in FIG imposes screw chasing processing, thus can mounting nuts 18.In addition, as shown in Figure 1, under the state that cutter supporting member 16, cutting knife 11, cutter securing member 17 are above-mentioned relation, from downside, cover 19 is arranged on driving shaft 12 further.Now, the spill of lower surface central authorities towards upside in larger depression of cover 19, in this recess, the driving shaft bottom length of 12A to downside with more than 5mm is outstanding.Therefore, it is possible to mounting nuts 18 in this outstanding part in driving shaft 12, thus, cover 19, cutter securing member 17, cutting knife 11 are fixed in driving shaft 12 (cutter supporting member 16).Now, due to be set as nut 18, driving shaft bottom 12A to be accommodated in be arranged at cover 19 recess in, can not give prominence to side downwards than cover 19 under the state that therefore driving shaft 12 and nut 18 are properly installed at nut 18.Immediate vicinity quilt cover 19 on the downside of driving shaft 12 covers, and suppresses the vegetation etc. of cutting off to be wrapped on driving shaft 12.
At this, as mentioned above, when cutting knife 11 is positioned at appropriate position relative to driving shaft 12, the cutting knife opening portion 111 in cutting knife 11 is chimeric with the boss 162 in cutter supporting member 16, outside it, cutting knife 11 carries out face with cutter support 163 and cutter fastening part 172 and contacts, and is clamped.Although under the position relationship of cutter supporting member 16, cutting knife 11, cutter securing member 17 is not for the state shown in Fig. 1 when making cutter securing member 17 etc. be fixed on driving shaft 12, when operation, cutting knife 11 rotates with the state of bias, but in brush cutting machine of the present utility model, as described below, under this inappropriate state, cutter securing member 17 cannot be mounted and fixed on cutter supporting member 16 side.
In brush cutting machine of the present utility model, three pins 173 are set in cutter securing member 17.Corresponding therewith, three positions in cutter supporting member 16 arrange pin insertion hole 164, as shown in Fig. 2 (b), pin insertion hole 164 around the central shaft of driving shaft 12, especially equally spaced to arrange around central shaft with the mode of the inscribed being formed boss 162 periphery.In the present embodiment, three pins 173 are by being pressed into the hole and the setting that is fixed that are formed at cutter securing member 17 respectively.But, be not limited thereto, also can carry out double pointed nail by welding, or by casting, forging and make pin integrally formed.In addition, also can cover 19 be made together with three pins 173 integrally formed on cutter securing member 17, can amount of parts be cut down accordingly, assembleability is improved.
In the structure shown here, first, as mentioned above, relative to cutter supporting member 16, the mode being embedded in cutting knife opening portion 111 with boss 162 installs cutting knife 11.Now, in existing structure, during the position deviation of cutting knife 11 relative to cutter supporting member (when cutting knife 11 is eccentric), then cutting knife 11 is likely caused directly to be fixed with the state tilted on boss because being installed on the driving shaft by cutter securing member.On the other hand, in the structure of present embodiment, if cutter securing member 17 is installed on cutter supporting member 16 by the mode inserting three pin insertion holes 164 with three pins 173, then the position relationship of cutter securing member 17 and cutter supporting member 16 also becomes appropriate.Now, because three pins 173 are also the same as with boss 162 in cutting knife opening portion 111, the position relationship therefore between cutter securing member 17 and cutting knife 11 is also held properly.Therefore, as shown in Figure 1, cutter securing member 17, cutting knife 11 can be installed on cutter supporting member 16 with appropriate position relationship.
And although in this condition cover 19, nut 18 are installed on driving shaft 12, because now cutter securing member 17 is also in the state being temporarily fixed on cutter supporting member 16 by three pins 173, therefore above-mentioned position relationship is kept.Therefore, it is possible to cutting knife 11 is fixed on driving shaft 12 rightly.
Fig. 6 represents in said structure accordingly with Fig. 1, under the state (cutting knife opening portion 111 is not embedded in the state of boss 162) cutting knife 11 not being installed on rightly cutter supporting member 16, installs form during cutter securing member 17 grade further.In this condition, the center of cutting knife 11 and the misalignment of driving shaft 12.When in this condition cutter securing member 17 being installed on cutter supporting member 16, there is the pin insertion hole 164 (pin insertion hole 164 on the left of the driving shaft 12 in Fig. 6) blocked by cutting knife 11, pin 173 cannot be inserted this pin insertion hole 164.Therefore, as shown in Figure 6, cutter fastening part 172 is in the state of floating from cutting knife 11.Operating personnel can easily confirm this state under visual.
At this, the length of driving shaft 12 can be set as follows, namely the length that driving shaft bottom 12A is outstanding on the downside of cover 19 is longer under the state of Fig. 1 is can the degree (such as more than 5mm) of mounting nuts 18, and shorter under the state of Fig. 6 be cannot the degree (such as below 2mm) of mounting nuts 18.Thus, the structure that only nut 18 can be installed on driving shaft 12 when being in the form of Fig. 1 can be become.That is, in the structure shown here, be installed on rightly except the situation of cutter supporting member 16 (driving shaft 12) except by cutting knife 11, cutter securing member 17, nut 18 cannot be installed on driving shaft 12.Therefore, cutting knife 11 is suppressed to be fixed in driving shaft 12 with inappropriate state.
In addition, during long-time use brush cutting machine, sometimes cause cutter securing member to rotate slightly relative to cutter supporting member because of vibration, nut 18 likely loosens with this rotation.On the other hand, due in such a configuration, utilize the pin 173 of three groups, the pin insertion hole 164 and position relationship of cutter securing member 17 and cutter supporting member 16 is fixed, therefore suppress the action that cutter securing member 17 rotates relative to cutter supporting member 16, also suppress loosening of nut 18.Therefore, cutting knife 11 also improves relative to the fixing reliability of driving shaft 12.
In addition, in above-mentioned structure, it is the structure easily cutting knife 11, cutter securing member 17 being installed on cutter supporting member 16.The partial enlarged drawing of cutter supporting member 16 is represented in Fig. 3 (a) and Fig. 3 (b).First, in Fig. 3 (a), represent the structure of the end (part of the region B in Fig. 2 (a)) not forming pin insertion hole 164 in boss 162.In order to easily cutting knife 11 is installed on cutter supporting member 16, the outer surface of boss 162 is the taper diminished towards downside (right side in Fig. 2 (a)) diameter in Fig. 1.As mentioned above, cutting knife opening portion 111 due to cutting knife 11 is entrenched on boss 162, therefore forms the side of cutting knife 11 of cutting knife opening portion 111 and the side of boss 162 and boss side surfaces 165 and is all formed along the above-below direction (left and right directions in Fig. 3 (a)) in Fig. 1.At this, in order to make boss 162 become taper, and the boss end slant surface 166 be provided with the end-beveling of boss 162.By this structure, the operation from right side, cutting knife 11 being arranged on cutter supporting member 16 side in Fig. 2 (a) becomes easy.
In Fig. 3 (b), represent the structure of the end (part of the region C in Fig. 2 (a)) being formed with pin insertion hole 164 in boss 162.In order to easily pin 173 be inserted pin insertion hole 164, the inner surface of pin insertion hole 164 is the taper diminished towards upside (left side in Fig. 2 (a)) internal diameter in Fig. 1.As mentioned above, pin insertion hole 164 is arranged on the peripheral part of boss 162, and the major part of its inner surface is the same with the side of pin 173 parallel with the above-below direction in Fig. 1.The pin insertion hole inclined plane 167 of its frontal width chamfering is provided with in pin insertion hole 164.By this structure, the operation of from right side, pin 173 being inserted pin insertion hole 164 in Fig. 2 (a) becomes easy, and operation cutter securing member 17 being installed on cutter supporting member 16 becomes easy.
In Figure 5, the structure of the fore-end (part of the region D in Fig. 4 (a)) of the pin 173 in cutter securing member 17 is represented.In order to easily pin 173 be inserted pin insertion hole 164, except pin insertion hole 164 is except taper as above, the outer surface of the leading section of pin 173 also arranges the pin inclined plane 174 of end chamfering processing.Thus, the taper of pin 173 also for attenuating towards upside (left side in Fig. 4 (a)) diameter in Fig. 1.Thereby, it is possible to easily three pins 173 are inserted pin insertion hole 164 respectively.And by making the front end of pin 173 be taper, when can suppress to insert pin insertion hole 164, the inner side of gear-box 10 contacts with pin 173.But, also can only make the side in pin, pin insertion hole be taper.In addition, the only part be respectively provided with in multiple pins, pin insertion hole also can be made to be taper.
In above-mentioned brush cutting machine, by above-mentioned structure, can effectively and easily carry out operation cutting knife 11 being arranged on driving shaft 12 side.Now, cutting knife 11 is suppressed to be mounted with inappropriate state, to be fixed on driving shaft 12 side.
In such a configuration, be provided with pin 173 in cutter securing member 17 side, be provided with pin insertion hole 164 in cutter supporting member 16 side.But, even if in contrast, pin is set in cutter supporting member 16 side, pin insertion hole is set in cutter securing member 17 side, clearly also there is same effect.Fig. 7 is the cutaway view corresponding to Fig. 1 of the structure represented around the driving shaft 12 that possesses in the first variation of this structure.
In the structure shown here, at the outer peripheral portion of the boss 162 of cutter supporting member (supporting member) 116, pin 168 is provided with towards downside.Although only record a pin 168 in the figure 7.But in fact the same with the pin 173 in Fig. 4 (a), Fig. 4 (b), along the peripheral part of boss 162, be circumferentially equally spaced provided with three at driving shaft 12.On the other hand, in cutter securing member (securing member) 117, pin 168 is provided with three pin insertion holes 175.Now, can by passing three pins 168 in cutting knife opening portion 111, the cutting knife opening portion 111 of cutting knife 11 is made to be embedded in boss 162, thus cutting knife 11 is installed on cutter supporting member 116, thereafter, in the mode making pin 168 insert pin insertion hole 175, cutter securing member 117 is installed on cutter supporting member 116 from downside.Thereby, it is possible to make the position relationship of cutter supporting member 116, cutting knife 11, cutter securing member 117 become appropriate.
And, in the structure shown here, can be that pin 168 is through to downside along pin insertion hole 175, and the structure outstanding to the downside of cutter securing member 117.Now, in cover 119, the pin insertion hole 120 corresponding to three pins 168 can be set.Thus, the pin 168 outstanding to the downside of cutter securing member 117 can be made to mate and mounting cup 119 with pin insertion hole 120.Therefore, the same with the structure of Fig. 1, can high accuracy and easily carry out the installation of cutting knife 11, cutter securing member 117, in addition, can also high accuracy and easily carry out the installation of cover 119.
In addition, in above-mentioned example, the cutter supporting member being provided with boss 162 installs cutting knife 11, thereafter cutter securing member is installed.But, also boss can be arranged on cutter securing member side, the cutter securing member being provided with cutting knife 11 be arranged on cutter supporting member (driving shaft 12) side.Fig. 8 is the cutaway view corresponding to Fig. 1, Fig. 7 of the structure represented around the driving shaft 12 in this second variation.
In the structure shown here, can, at the boss 176 of upper surface setting in convex of cutter securing member (securing member) 217, cutting knife opening portion 111 be made to be embedded in this boss 176.And, at the outer peripheral portion of boss 176, upside is provided with three (in illustrated scope being one) pins 177.Therefore, can make three pins 177 from downside through cutting knife opening portion 111, and make boss 176 from the state that downside is embedded in cutting knife opening portion 111, (temporary fixed) cutting knife 11 installed by cutter securing member 217.In this condition, cutter securing member 217 can be installed on cutter supporting member 216, insert to make pin 177 pin insertion hole 169 being arranged on cutter supporting member (supporting member) 216 side.By mounting cup 19, nut 18 in this condition, thus cutting knife 11 is made to be fixed on driving shaft 12 side.In this case, also the same with the structure of Fig. 1, Fig. 7, can high accuracy and easily carry out the installation of cutting knife 11, cutter securing member 217.
In addition, in the structure of Fig. 7, Fig. 8, also the same with the structure of Fig. 1, the length of driving shaft 12 can be set as follows, namely cannot mounting nuts 18 when cutting knife 11 is not properly installed.
So, the boss chimeric with the cutting knife opening portion 111 in cutting knife 11 can be arranged on either party in cutter supporting member, cutter securing member.And pin also can be arranged on the side being wherein provided with boss, or the either side of side of boss is not set, now, as long as the side not arranging pin in cutter supporting member, cutter securing member arranges pin insertion hole.When the side being provided with boss arranges pin, as shown in Figure 8, in the boss of convex, the pin in convex can also be set.Also same effect can be obtained by this structure.
In addition, when using spring catch as pin used herein, be especially easily fixed in cutter fastening part or cutter support, and it fixedly becomes firm.Fig. 9 (a) is the cutaway view corresponding to Fig. 4 (a) of the structure representing the cutter securing member 317 using this spring catch (pin) 178, and Fig. 9 (b) is its vertical view.In addition, Figure 10 is by the enlarged drawing of the region E of dotted line in Fig. 9 (b).Because spring catch 178 is formed by having flexible metal plate bending machining and become roll, therefore vertical with its length direction shape as shown in Figure 10, in the shape of annulus local interruption.Spring catch 178 is the same with the situation of Fig. 4 (a), Fig. 4 (b), is provided with three.
Figure 11 (a) and Figure 11 (b) is the figure of the form represented when this spring catch 178 being fixed on cutter securing member 317, represents the section shape with the position corresponding by the region F of dotted line in Fig. 9 (a).At this, first as shown in Figure 11 (a), form the pin fixing hole 179 along the through cutter securing member 317 of the left and right directions in Fig. 9 (a) and Figure 11 (a) and Figure 11 (b).Thereafter, as shown in Figure 11 (b), if the spring catch 178 being processed into roll is embedded this pin fixing hole 179, then by the elastic force to the direction effect making spring catch 178 expand, spring catch 178 is firmly fixed in pin fixing hole 179.Therefore, there is no need for using grafting material (solder etc.) to fix the operation of spring catch 178, especially can easily and manufacture this cutter securing member 317 with low cost.
In addition, above-mentioned example is that the cutting knife opening portion 111 in cutting knife 11 is rounded, and when cutting knife 11 and cutter securing member are installed, three examples sold and connect in this cutting knife opening portion 111.But as long as can suppress to install cutter securing member with inappropriate form, then not needing to connect in pin and cutting knife opening portion 111, also can be the structure of pin only through cutting knife opening portion 111.And above-mentioned example is that three pins have symmetric structure circumferentially arranging at equal intervals centered by the central shaft of driving shaft.Therefore, cutter securing member has three relative to the direction in the horizontal plane that can install of driving shaft (cutter supporting member), wherein, in either case, can both install cutting knife rightly.That is, from the state of having installed cutter securing member and cutter supporting member rightly as shown in Figure 1, cutter securing member is made centered by driving shaft, to rotate predetermined angular (being roughly 120 ° in present embodiment) and under the state making pin consistent with pin insertion hole, also cutter securing member and cutter supporting member can be installed rightly.And then, centered by driving shaft, rotate predetermined angular (being roughly 120 ° in present embodiment) making cutter securing member from this state and under the state making pin consistent with pin insertion hole, also cutter securing member and cutter supporting member can be installed rightly.Therefore, the installation of cutter securing member becomes easy.In order to obtain same effect, the quantity of the number ratio pin of pin insertion hole also can be made many.On the contrary, this installation direction be defined to use in the mode of time, that is, when making cutter securing member rotate centered by driving shaft only when a place and cutter supporting member are properly installed, become this by making three pins and there is no symmetric configuration, thus this installation direction is also defined to one.
In addition, cutting knife opening portion, boss do not need for circle, as long as cutting knife can be suppressed to be installed on cutter supporting member or cutter securing member with inappropriate form, then its shape is any.But, when they are circular, when the cutting knife in rotation sharply being executed great load, because cutting knife can, from cutter supporting member or the idle running of cutter securing member of being fixed on driving shaft, therefore make impact now relax.On the other hand, make cutting knife opening portion, boss is when being the shape beyond circle, this idle running can be suppressed.And as long as the shape of cutting knife opening portion and boss can be fitted together to, then the flat shape of cutting knife opening portion and boss does not need identical yet.
Although the configurations of three pins depend on the shape of cutting knife opening portion and boss, not necessarily all the same in arbitrary shape with connecing this situation in cutting knife opening portion.And the quantity of pin and pin insertion hole needs not be three groups, also can be more than two groups or four groups.Or, even if be clearly one group, also compared with when they are not set, the possibility of installing cutter securing member with inappropriate form can be made significantly to decline.
In addition, in the structure shown in Fig. 1, Fig. 7, Fig. 8, the cutter supporting member being only fixed on driving shaft compared with the existing brush cutting machine described in patent document 1 grade is different with cutter securing member, and other structure example such as the structure about the driving shaft in cutting knife, gear-box does not then change with existing brush cutting machine.Therefore, it is possible to based on existing brush cutting machine, manufacture above-mentioned brush cutting machine at an easy rate.
Although record brush cutting machine in foregoing, equally with above-mentioned cutting knife use supporting member, securing member and be installed on the portable workover rig of the rotary part of driving shaft as long as clearly adopt, then also can apply above-mentioned structure.In this case, above-mentioned structure is utilized then to have same effect.
Claims (12)
1. a portable workover rig, possesses: the supporting member being fixed on the driving shaft of rotation; And, by being installed on above-mentioned driving shaft between above-mentioned supporting member from the securing member of downside clamping rotary part, above-mentioned portable workover rig makes above-mentioned rotary part rotate along with above-mentioned driving shaft,
The feature of above-mentioned portable workover rig is,
Above-mentioned rotary part is provided with opening portion,
On a side in above-mentioned supporting member, above-mentioned securing member, correspond in the region of above-mentioned opening portion when clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, be provided with to the outstanding pin in the opposing party side in above-mentioned supporting member, above-mentioned securing member.
2. portable workover rig according to claim 1, is characterized in that,
The opposing party in above-mentioned supporting member, above-mentioned securing member is provided with pin insertion hole, and when clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, above-mentioned pin inserts this pin insertion hole.
3. portable workover rig according to claim 1, is characterized in that,
When overlooking, be the toroidal centered by the central shaft of above-mentioned driving shaft when above-mentioned opening portion clamps above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member.
4. portable workover rig according to claim 3, is characterized in that,
When clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, centered by the central shaft of above-mentioned driving shaft, be circumferentially provided with multiple above-mentioned pin.
5. portable workover rig according to claim 4, is characterized in that,
When clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, connect in multiple above-mentioned pin and above-mentioned opening portion.
6. portable workover rig according to claim 4, is characterized in that,
The above-mentioned pin of many groups is circumferentially equally spaced being provided with around the above-mentioned of above-mentioned central shaft.
7. portable workover rig according to claim 5, is characterized in that,
Be provided with the above-mentioned pin of more than three.
8. portable workover rig according to claim 1, is characterized in that,
Above-mentioned supporting member or above-mentioned securing member are provided with the boss as protuberance, and when clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, this protuberance is chimeric with above-mentioned opening portion.
9. portable workover rig according to claim 8, is characterized in that,
Be configured to, cover is installed on above-mentioned driving shaft by the downside from above-mentioned securing member under the state clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, the lower end side mounting nuts of the above-mentioned driving shaft outstanding in the downside to above-mentioned cover, above-mentioned rotary part, above-mentioned securing member and above-mentioned cover are fixed in above-mentioned driving shaft thus
The length that when above-mentioned securing member and above-mentioned cover being installed on above-mentioned driving shaft under the state that above-mentioned opening portion is not chimeric with above-mentioned boss, the downside of the above-mentioned cover of above-mentioned driving axial is outstanding is below 2mm.
10. portable workover rig according to claim 8, is characterized in that,
The opposing party in above-mentioned supporting member, above-mentioned securing member is provided with pin insertion hole, and when clamping above-mentioned rotary part between above-mentioned securing member and above-mentioned supporting member, above-mentioned pin inserts this pin insertion hole,
At least make the outer surface of the outer surface of above-mentioned boss, above-mentioned pin, the section of any one of the inner surface of above-mentioned pin insertion hole is taper.
11. portable workover rigs according to claim 1, is characterized in that,
Above-mentioned pin has flexible metal material to be processed to roll and the spring catch formed, and above-mentioned pin is embedded into the pin fixing hole on the side of being fixed on and being formed in above-mentioned supporting member, above-mentioned securing member.
12. portable workover rigs according to claim 1, is characterized in that,
Above-mentioned portable workover rig makes above-mentioned rotary part be the brush cutting machine of cutting knife.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-028710 | 2014-02-18 | ||
| JP2014028710A JP2015149963A (en) | 2014-02-18 | 2014-02-18 | portable working machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204616403U true CN204616403U (en) | 2015-09-09 |
Family
ID=53892885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520104642.6U Expired - Fee Related CN204616403U (en) | 2014-02-18 | 2015-02-12 | Portable workover rig |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2015149963A (en) |
| CN (1) | CN204616403U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685316A (en) * | 2016-08-04 | 2018-02-13 | 安德烈·斯蒂尔股份两合公司 | For the device on the driven shaft for the work apparatus for securing the tool to motor driving |
| CN108391500A (en) * | 2017-02-08 | 2018-08-14 | 安德烈·斯蒂尔股份两合公司 | Cutting head for electronic reaping hook |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6695303B2 (en) * | 2017-05-26 | 2020-05-20 | 株式会社丸山製作所 | Brush cutter |
-
2014
- 2014-02-18 JP JP2014028710A patent/JP2015149963A/en active Pending
-
2015
- 2015-02-12 CN CN201520104642.6U patent/CN204616403U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685316A (en) * | 2016-08-04 | 2018-02-13 | 安德烈·斯蒂尔股份两合公司 | For the device on the driven shaft for the work apparatus for securing the tool to motor driving |
| CN108391500A (en) * | 2017-02-08 | 2018-08-14 | 安德烈·斯蒂尔股份两合公司 | Cutting head for electronic reaping hook |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015149963A (en) | 2015-08-24 |
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