CA2068958A1 - Feeding device - Google Patents
Feeding deviceInfo
- Publication number
- CA2068958A1 CA2068958A1 CA 2068958 CA2068958A CA2068958A1 CA 2068958 A1 CA2068958 A1 CA 2068958A1 CA 2068958 CA2068958 CA 2068958 CA 2068958 A CA2068958 A CA 2068958A CA 2068958 A1 CA2068958 A1 CA 2068958A1
- Authority
- CA
- Canada
- Prior art keywords
- feed rod
- feeding device
- feed
- lever
- chain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
- B25H1/0035—Extensible supports, e.g. telescopic
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
- Earth Drilling (AREA)
Abstract
Abstract A feeding device for installation work, such as dril-ling or equivalent, the feeding device having a tubular body (2) and a feed rod (3) within it, mov-able in the longitudinal direction of said body (2).
The feed rod (3) includes a chain (3b) recessed in-wardly from its outer surface, being fixed at its ends immovably to the feed rod (3). A sprocket wheel (5a) extending to the chain (3b) is fixed to the body (2), and a feed lever (6) provided with a pawl mechanism is connected to the arm (5b) of the sprocket wheel (5a).
(Figure 1)
The feed rod (3) includes a chain (3b) recessed in-wardly from its outer surface, being fixed at its ends immovably to the feed rod (3). A sprocket wheel (5a) extending to the chain (3b) is fixed to the body (2), and a feed lever (6) provided with a pawl mechanism is connected to the arm (5b) of the sprocket wheel (5a).
(Figure 1)
Description
2 ~
Feeding device The present invention relates to a feeding device for upward installations, having a tubular body and a feed rod mounted within it in such a way that the body and the feed rod are movable in the longitudinal direction of one another, and displacing means for displacing the feed rod and the body relat-ive to one another.
Various implements have been developed for the feeding of hand drilling machines and percussion ham-mers or the like, particularly in the drilling of holes upwardly, the purpose of said implements being to achieve a sufficient and uniform feed force with-out too much effort being reguired on the part of the driller. Such various feeding devices are known for instance from DE-0-2 643 598, CH-465 360, US-2,891,042 and US-4,818,155. Further, SE-459 561 dis-closes an arrangement for feeding a percussion hammer or equivalent in the drilling of holes downwardly.
DE-2 643 598 discloses an arrangement having two feed tubes mounted for relative mo~ement ln their longitudinal direction, and a spring, pneumatic cyl-inder or equivalent provided therewithin and acting between them. The arrangement further includes an extension rod immovably mounted to the other rod mem-ber by means of longitudinally successive holes and a cotter, the drilling machine being fixed to the end of said extension rod by means of a separate fixing member. This solution further comprises a power unit by means of which the spring or the piston of the pneumatic cylinder can be pressed down to produce a load force, whereafter the drilling maohine and ~he auxiliary rod are raised as high as possible and locked by means of the cotter, the force generated by 2~8~
the spriny or pneumatic cylinder then pushing the drilling machine against the ceiling and thereby pro-ducing a feed force. This solution is difficult and complicated in use, and, furthermore, it requires complex adjustment operations prior to the drilling.
The arrangement is also very expensive to realize.
CH-465 360 discloses a functionally similar construction, having the same deficiencies as stated in connection with the above DE publication.
US-2 819 042 discloses a solution having a cyl-inder extensible by means of compressed air supplied from a separate compressed-air source, and a carriage which is movable in relation thereto and in which the drilling machine is mounted. A chain is connected to the piston rod of the cylinder, passing over idler wheels provided at one end of the cylinder and again reverting downwardly. The other end of the chain is connected to the carriage. When compressed air is supplied to the cylinder, the cylinder is extended and simultaneously forces the chain to move over the idler wheels at the cylinder end, whereupon the dril-ling machine is displaced in the direction of exten-sion of the cylinders twice the distance that the cylinder itself is extended. This arrangement is very complicated and expensive to manufacture, and further re~uires a separate external compressed-air source for carrying out the drilling operation.
US-4,818,155 teaches an arrangement comprising a telescopically extensible support rod and, at the upper end thereof, a pneumatic cylinder-piston con-struction which is driven by compressed air supplied from a separate compressed-air source and with which the drilling machine is first displaced, the pneu-matic cylinder having assumed its shortest position, to contact the drilling surface, and the telescopic 2 ~
joint is tightened, whereafter compressed air is sup-plied to the pneumatic cylinder and the drilling machine is advanced by the force generated by the cylinder. Also this arrangement requires a separate compressed-air source, which complicates the situ-ation. Further, it is difficult to carry out, and the realization of the telescopic joint in a tight and reliable way is troublesome, wherefore the arrange-ment is rendered undependable.
SE-459 561 discloses an arrangement wherein the feeding device is constituted by a vertical beam, an idler wheel being mounted at one end thereof and the drilling machine being movable relative thereto. A
cord or equivalent resilient member passes over the idler wheel, being connected at one end thereof to a carriage 3 displaceable along a beam, the other end being connected to a crank-worked roller located at the upper end of a bearing. With this arrangement, one has endeavoured to obviate the vibrations pro-duced by the operating of the drilling machine with the aid of a resilient member, such as a spring, cord, or the like. The arrangement is awkward to use, and the separately arranged resilient member therein is inconveniently in the way and will easily be dam-aged. The arrangement is rather difficult to use in upwardly directed drilling operations, also if real-ized otherwise constructionally.
It is the object of the invention to provide a feeding device that is simple and easy to realize and is reliable and secure in operation. A further object of the invention is to provide a feeding device that can be used, apart from drilling, also in other ins-tallation work, such as advancing boards against a ceiling in connection with the installation thereof.
The feeding device of the invention is charac-~89~8 terized in that the feed rod has an elongated dis-placing member in its longitudinal direction, being installed substantially immovably in its longitudinal direction and disposed in the space between the body and the feed rod, that a deflecting sprocket contact-ing with the displacing membe~ is pivotally attached to the body, for connecting non~slidably therewith, and that a feed lever is connected to the deflecting sprocket for rotating said sprocket wheel, the rotat-ing movement of said deflecting sprocket moving thedisplacing member and thereby the feed rod relative to the body in the longitudinal direction thereof.
An essential idea of the invention is that a chain or a corresponding elongated feed member is installed in the feed rod immovably in the lon-gitudinal direction thereof and on a level with the surface thereof, and thus the feed rod and the body can be mounted slidably to nest one within the other.
Further, an essential idea of the invention is that the displacing means are disposed outside the tubular body, so that the sprocket wheel or the like, which constitutes part of said displacing means, ~extends through the body to the displacing member, and thus the feed rod can be displaced relative to the tubular body in its longitudinal direction by rotating the sprocket wheel.
The invention will be explained in more detail in the accompanying drawings, wherein Fi~ure 1 is a schematic view of a feeding device of the invention to which a drilling machine is fixed, Figure 2 shows a feeding device of the inven-tion as a cross-section taken on line A-A, Figure 3 shows the displacing means of a feed-ing device of the invention as a cross~section taken 2~95~
on line B-s of Figure 2, Figure 4 shows the foot of a feeding device of the invention in connection with ordinary drilling, Figure 5 shows the foot of a feeding device of the invention in connection with drilling holes adJacent a wall or other corresponding obstruction, and Figure 6 i5 a partial cut-away view of the feed lever of a feeding device of the invention.
Figure 1 shows a feeding device for a drilling machine, comprising a foot 1, a body 2 fixed thereto, a feed rod 3 wi~hin said body, movably mounted in its longitudinal direction, and further a drilling machine 4 fixed to the end of the feed rod 3 for drilling. A displacing mechanism 5 is mounted to the side of the body 2, including a feed lever 6 and also a locking latch 7. To facilitate the moving of the apparatus, wheels 8 are fixed to the lower side of the foot 1. Similarly, to facilitate the use of the apparatus, a socket 9 is fixed to the body, a conduc-tor 10 going out from said socket for the supply of current to the feeding device. To facilitate the drilling, a handle 11 is fixed adjacent the socket 9, which can be held by the driller when the feed lever 6 is turned.
Figure 2 shows a cross-section of the device of Figure 1 taken on line A-A. In this case, the body 2 is constructed of a square steel tube constituting a tubular body. A housing for a feed mechanism is fixed to the side of the tubular body 2, and a hole is pro-vided in the tubular body 2 at the location of the housing. A displacing mechanism is provided within the housing: a sprock~t wheel 5a rotatably journalled by means of an axle 5b in relation to the h~using and thereby to the tubular body 2. Further, a feed lever ~895g 6 is connected to ~he axle 5b; this feed lever is most advantageously a pawl rod of the generally known type, having a dogging mechanism allowing the turning of the rod in one direction without for axle 5b to turn. The lever 6 can then be turned within a speci-fic easily operable angular area to produce a feed in one direction, and after the feeding step the rod can be returned to the position from which the feeding step started and the feeding continued further. Also the feed rod 3 is most advantageously manufactured of a s~uare steel profile, a groove or slot 3a being provided on one side thereof by means of a U-shaped steel tube or in another manner. A displacing means having the longitudinal direction of the feed rod is mounted in the groove 3a; in its simplest realization said displacing means is a chain 3b secured immovably at its one end by means of a normal mortice and tenon joint or otherwise, and at its other end fixed by means of an adjustable bolt and nut joint so as to render it suitably taut. The groove 3a is dimensioned in relation to the chain 3b in such a way that at its outermost portion, the chain 3b is disposed on a level with the outer surface of the feed rod 3 at the most, so as to allow ready sliding of the feed rod 3 within the tubular body 2. The sprocket wheel 5a ex-tends through the opening provided in the tubular body 2 to the chain, and thus the feed rod 3 can be cause~ to move in the desired direction relative to the tubular body 2 by rotating the sprocket wheel with the feed lever.
Figure 3 shows the construction of the feeding mechanism taken on line ~-B of Figure 2. It is apparent from the figure in what way the tubular body 2 and the feed rod 3 are located relative to one an-other. At the same time, the figure shows how the 2~1~89~8 chain 3b is located in the groove 3a and the sprocketwheel 5a extends through the opening 2a provided in the tubular body 2 to the chain 3b. Figure 3 further shows how the latch lever 7 is coupled to retain the sprocket wheel immovable when it is not turned by means of the feed lever 6. The latch lever 7 is pro-tected from above, that is, at the opening provided in the top of the housing for the displacing mechan-ism, with a rubber cover 12 preventing dirt and dust from falling into the mechanism. The latch lever 7 is journalled in the housiny for rotation about the axle 13, and the mechanism further includes~ a spring 14 biasing the latch lever 7 to turn toward the sprocket wheel 5a so that the sprocket wheel cannot rotate except in the direction elevating the displacing rod, if the latch lever 7 is not turned upward separately.
As is to be seen from Figure 1, the latch lever 7 is of such a length and is so bent that its hooked end extends to the vicinity of the handle 9 provided on the other side of the feed device, thus enabling the driller to open the latch 7 with the hand grasping the handle 9, whilst he lowers the feed rod backwards the desired distance with his other hand.
Figure 4 shows a foot 1 for a feeding device, having crosswise, wheeled support arms la and lb. A
separately detachable arm section lc is connected to the support arm la, and thus one leg with its apper-taining wheel is detachable from the foot. On the other hand, both ends of the arm lb are bent to the side of the detachable arm section lc in such a way that the points of support of the wheels provided at the ends thereof are located on the side of the removed arm section lc relative to the body of the feeding device. This allows the feeding device to be stationed very close to a wall 15 or another obstruc-2~95~
tion in accordance with Figure 5, in a situationwhere it is necessary to drill holes in such a loca-tion.
Figure 6 shows the feed lever 6 of the feeding device of the invention partially cut away at the axle 5b of the sprocket wheel. There is a pawl joint at the end of the arm 6, constituted by a ratchet wheel 6b toothed on its outer edge and mounted within the discoidal end 6a of the arm, and further a spring-loaded pawl member or stop spring having a restraining action on the teething of the ratchet wheel 6b, said construction being generally known as such and therefore not being more closely set forth in this connection. In accordance with this construc-tion, the ratchet wheel 6b can rotate in either dir-ection in relation to the end 6a of the lever 6, but the latch construction prevents its rotation in one direction. Thus an axle or equivalent can be turned by means of the lever in one direction while the ratchet wheel remains stationary, and the lever can be returned to its initial position while the pawl mechanism acts so as to prevent the axle from turning with the lever. Further, the feed lever has an aux-iliary arm 16 attached to the arm thereof, extending to the axle 5b of the sprocket wheel. A separate aux-iliary wrench 17 is fixed between the auxiliary arm 16 and the end 6a of the feed lever 6 immovably rela-tive to the auxiliary arm 16. It also includes a boss 18 flanged at both ends, extending through an opening provided in the auxiliary arm 16 to the inside of the auxiliary wrench 17 and being movable in the axial direction toward the end 6a of the feed lever 6. Fig-ure 6 illustrates a situation where the axle 5b of the sprocket wheel is shown as pushed into the feed lever. ~he end of the axle 5b has a portion 5c of a ~8~
square cross-section, fitting in the square opening provided in the ratche-t wheel 6b to allow turning of the axle 5b by means of a reversal lever. The auxili-ary wrench 17 has a square or hexagonal wrench socket that is embodied using the conventional construction of tool wrenches so as to allow the end 5c of the axle 5b to be pushed into it, while the notches of the toothed groove match the shape of the axle end 5c and are seated a~ its corners, preventing it from rotating relative to the auxiliary wrench 17. When the drilling machine or equivalent is advanced in the normal way, the boss 18 is depressed, the end of the axle 5b extending only to the edge of the ratchet wheel 6b, and thus the axle 5b is not under the action of the auxiliary wrench 17. In that situation, the axle 5b can be rotated in the manner set forth previously by turning the lever 6 in one direction, so as to make the ratchet wheel 6b rotate about the lever, thereby turning the axle 5b, and correspond-ingly the lever 6 can be returned to its initialposition, so that the ratchet wheel 6b rotates rela-tive to the lever 6 while the axle 5b remains immov-able. When one wishes to reverse the feed rod downw-ardly, the feed lever 6 is pushed toward the axle 5b, upon which the end 5c of the axle 5b is pushed into the auxiliary wrench 17 to be locked thereby, and when the locking latch 7 is simultaneously opened, the eed rod can be turned by moving the lever 6 towards its normal initial position, without the ratchet wheel 6b rotating relative to the arm 6.
After the reversing movement, the lever 7 is rel-eased, and by grasping the arm 6 and depressing the boss 18 in relation to the arm 6, the arm 6 is moved from the position shown in Figure 6 in the direction of the axle 5b, and the auxiliary wrench 17 is dis-2~8958 placed outside the axle 5b, again allowing a feedmovement. The feed lever 6 further has an enlarged handle portion 6c, which is easy to hold, and a boss 19 rotating about its longitudinal axis relative to the feed lever 6, and said feed lever serves as a crank when rotated at the boss, thus facilitating the performing of longitudinal movements and presetting.
In the foregoing specification and drawings, the invention has been explained by way of example, and the invention is in no way restricted thereto.
The body 2 and the feed rod 3 may be mounted the other way round, in which case the body located on top of the feed rod protects the chain from dust and other falling dirt. However, in such a solution the feed lever moves with the body, and therefore it is more inconvenient to use, wherefore the embodiment shown in the figures is more desirable and a better solution from the practical point of view. The body and the feed rod may be of different cross-sections and constructions, as long as they realize the char-acteristic features defined in the claims. The groove or slot for the chain may naturally also be formed in the body either entirely or in part, the chain then correspondingly being entirely or partly disposed on the feed rod on the outer surface thereof. The groove or slot for the chain can also be provided by welding for instance on an outer surface of a tube of a cer-tain shape additional profiles of either flat or other configuration, so that room for a chain remains therebetween. Likewise, instead of a chain and sprocket, a rack and pinion may in principle be used, but these are significantly more expensive in prac-tice. Apart from drilling, the feeding device can be used in connection with the installation of e.g.
boards to the ceiling of a buiIding, in which case a 2~6~5~
board holder is mounted to the end of the feed rod 3, instead of adapters or holders for fixing the dril-ling machine. The feed rod can be, apart from the kind shown in the figures and specification, also of another kind, for instance merely a stationarily mounted crank construction. When the body and the feed rod are disposed in accordance with Figure 1 so that the feed rod is movable within the body and is located above it, it is advantageous to mount a pro-tective bag of cloth or other material to extend fromthe upper portion of the feed rod to the top of the body, said bag being tightly attached to the end of each of these, and allowing the feed rod to move relative to the body simultaneously as it protects the construction between them from dust and dirt.
Feeding device The present invention relates to a feeding device for upward installations, having a tubular body and a feed rod mounted within it in such a way that the body and the feed rod are movable in the longitudinal direction of one another, and displacing means for displacing the feed rod and the body relat-ive to one another.
Various implements have been developed for the feeding of hand drilling machines and percussion ham-mers or the like, particularly in the drilling of holes upwardly, the purpose of said implements being to achieve a sufficient and uniform feed force with-out too much effort being reguired on the part of the driller. Such various feeding devices are known for instance from DE-0-2 643 598, CH-465 360, US-2,891,042 and US-4,818,155. Further, SE-459 561 dis-closes an arrangement for feeding a percussion hammer or equivalent in the drilling of holes downwardly.
DE-2 643 598 discloses an arrangement having two feed tubes mounted for relative mo~ement ln their longitudinal direction, and a spring, pneumatic cyl-inder or equivalent provided therewithin and acting between them. The arrangement further includes an extension rod immovably mounted to the other rod mem-ber by means of longitudinally successive holes and a cotter, the drilling machine being fixed to the end of said extension rod by means of a separate fixing member. This solution further comprises a power unit by means of which the spring or the piston of the pneumatic cylinder can be pressed down to produce a load force, whereafter the drilling maohine and ~he auxiliary rod are raised as high as possible and locked by means of the cotter, the force generated by 2~8~
the spriny or pneumatic cylinder then pushing the drilling machine against the ceiling and thereby pro-ducing a feed force. This solution is difficult and complicated in use, and, furthermore, it requires complex adjustment operations prior to the drilling.
The arrangement is also very expensive to realize.
CH-465 360 discloses a functionally similar construction, having the same deficiencies as stated in connection with the above DE publication.
US-2 819 042 discloses a solution having a cyl-inder extensible by means of compressed air supplied from a separate compressed-air source, and a carriage which is movable in relation thereto and in which the drilling machine is mounted. A chain is connected to the piston rod of the cylinder, passing over idler wheels provided at one end of the cylinder and again reverting downwardly. The other end of the chain is connected to the carriage. When compressed air is supplied to the cylinder, the cylinder is extended and simultaneously forces the chain to move over the idler wheels at the cylinder end, whereupon the dril-ling machine is displaced in the direction of exten-sion of the cylinders twice the distance that the cylinder itself is extended. This arrangement is very complicated and expensive to manufacture, and further re~uires a separate external compressed-air source for carrying out the drilling operation.
US-4,818,155 teaches an arrangement comprising a telescopically extensible support rod and, at the upper end thereof, a pneumatic cylinder-piston con-struction which is driven by compressed air supplied from a separate compressed-air source and with which the drilling machine is first displaced, the pneu-matic cylinder having assumed its shortest position, to contact the drilling surface, and the telescopic 2 ~
joint is tightened, whereafter compressed air is sup-plied to the pneumatic cylinder and the drilling machine is advanced by the force generated by the cylinder. Also this arrangement requires a separate compressed-air source, which complicates the situ-ation. Further, it is difficult to carry out, and the realization of the telescopic joint in a tight and reliable way is troublesome, wherefore the arrange-ment is rendered undependable.
SE-459 561 discloses an arrangement wherein the feeding device is constituted by a vertical beam, an idler wheel being mounted at one end thereof and the drilling machine being movable relative thereto. A
cord or equivalent resilient member passes over the idler wheel, being connected at one end thereof to a carriage 3 displaceable along a beam, the other end being connected to a crank-worked roller located at the upper end of a bearing. With this arrangement, one has endeavoured to obviate the vibrations pro-duced by the operating of the drilling machine with the aid of a resilient member, such as a spring, cord, or the like. The arrangement is awkward to use, and the separately arranged resilient member therein is inconveniently in the way and will easily be dam-aged. The arrangement is rather difficult to use in upwardly directed drilling operations, also if real-ized otherwise constructionally.
It is the object of the invention to provide a feeding device that is simple and easy to realize and is reliable and secure in operation. A further object of the invention is to provide a feeding device that can be used, apart from drilling, also in other ins-tallation work, such as advancing boards against a ceiling in connection with the installation thereof.
The feeding device of the invention is charac-~89~8 terized in that the feed rod has an elongated dis-placing member in its longitudinal direction, being installed substantially immovably in its longitudinal direction and disposed in the space between the body and the feed rod, that a deflecting sprocket contact-ing with the displacing membe~ is pivotally attached to the body, for connecting non~slidably therewith, and that a feed lever is connected to the deflecting sprocket for rotating said sprocket wheel, the rotat-ing movement of said deflecting sprocket moving thedisplacing member and thereby the feed rod relative to the body in the longitudinal direction thereof.
An essential idea of the invention is that a chain or a corresponding elongated feed member is installed in the feed rod immovably in the lon-gitudinal direction thereof and on a level with the surface thereof, and thus the feed rod and the body can be mounted slidably to nest one within the other.
Further, an essential idea of the invention is that the displacing means are disposed outside the tubular body, so that the sprocket wheel or the like, which constitutes part of said displacing means, ~extends through the body to the displacing member, and thus the feed rod can be displaced relative to the tubular body in its longitudinal direction by rotating the sprocket wheel.
The invention will be explained in more detail in the accompanying drawings, wherein Fi~ure 1 is a schematic view of a feeding device of the invention to which a drilling machine is fixed, Figure 2 shows a feeding device of the inven-tion as a cross-section taken on line A-A, Figure 3 shows the displacing means of a feed-ing device of the invention as a cross~section taken 2~95~
on line B-s of Figure 2, Figure 4 shows the foot of a feeding device of the invention in connection with ordinary drilling, Figure 5 shows the foot of a feeding device of the invention in connection with drilling holes adJacent a wall or other corresponding obstruction, and Figure 6 i5 a partial cut-away view of the feed lever of a feeding device of the invention.
Figure 1 shows a feeding device for a drilling machine, comprising a foot 1, a body 2 fixed thereto, a feed rod 3 wi~hin said body, movably mounted in its longitudinal direction, and further a drilling machine 4 fixed to the end of the feed rod 3 for drilling. A displacing mechanism 5 is mounted to the side of the body 2, including a feed lever 6 and also a locking latch 7. To facilitate the moving of the apparatus, wheels 8 are fixed to the lower side of the foot 1. Similarly, to facilitate the use of the apparatus, a socket 9 is fixed to the body, a conduc-tor 10 going out from said socket for the supply of current to the feeding device. To facilitate the drilling, a handle 11 is fixed adjacent the socket 9, which can be held by the driller when the feed lever 6 is turned.
Figure 2 shows a cross-section of the device of Figure 1 taken on line A-A. In this case, the body 2 is constructed of a square steel tube constituting a tubular body. A housing for a feed mechanism is fixed to the side of the tubular body 2, and a hole is pro-vided in the tubular body 2 at the location of the housing. A displacing mechanism is provided within the housing: a sprock~t wheel 5a rotatably journalled by means of an axle 5b in relation to the h~using and thereby to the tubular body 2. Further, a feed lever ~895g 6 is connected to ~he axle 5b; this feed lever is most advantageously a pawl rod of the generally known type, having a dogging mechanism allowing the turning of the rod in one direction without for axle 5b to turn. The lever 6 can then be turned within a speci-fic easily operable angular area to produce a feed in one direction, and after the feeding step the rod can be returned to the position from which the feeding step started and the feeding continued further. Also the feed rod 3 is most advantageously manufactured of a s~uare steel profile, a groove or slot 3a being provided on one side thereof by means of a U-shaped steel tube or in another manner. A displacing means having the longitudinal direction of the feed rod is mounted in the groove 3a; in its simplest realization said displacing means is a chain 3b secured immovably at its one end by means of a normal mortice and tenon joint or otherwise, and at its other end fixed by means of an adjustable bolt and nut joint so as to render it suitably taut. The groove 3a is dimensioned in relation to the chain 3b in such a way that at its outermost portion, the chain 3b is disposed on a level with the outer surface of the feed rod 3 at the most, so as to allow ready sliding of the feed rod 3 within the tubular body 2. The sprocket wheel 5a ex-tends through the opening provided in the tubular body 2 to the chain, and thus the feed rod 3 can be cause~ to move in the desired direction relative to the tubular body 2 by rotating the sprocket wheel with the feed lever.
Figure 3 shows the construction of the feeding mechanism taken on line ~-B of Figure 2. It is apparent from the figure in what way the tubular body 2 and the feed rod 3 are located relative to one an-other. At the same time, the figure shows how the 2~1~89~8 chain 3b is located in the groove 3a and the sprocketwheel 5a extends through the opening 2a provided in the tubular body 2 to the chain 3b. Figure 3 further shows how the latch lever 7 is coupled to retain the sprocket wheel immovable when it is not turned by means of the feed lever 6. The latch lever 7 is pro-tected from above, that is, at the opening provided in the top of the housing for the displacing mechan-ism, with a rubber cover 12 preventing dirt and dust from falling into the mechanism. The latch lever 7 is journalled in the housiny for rotation about the axle 13, and the mechanism further includes~ a spring 14 biasing the latch lever 7 to turn toward the sprocket wheel 5a so that the sprocket wheel cannot rotate except in the direction elevating the displacing rod, if the latch lever 7 is not turned upward separately.
As is to be seen from Figure 1, the latch lever 7 is of such a length and is so bent that its hooked end extends to the vicinity of the handle 9 provided on the other side of the feed device, thus enabling the driller to open the latch 7 with the hand grasping the handle 9, whilst he lowers the feed rod backwards the desired distance with his other hand.
Figure 4 shows a foot 1 for a feeding device, having crosswise, wheeled support arms la and lb. A
separately detachable arm section lc is connected to the support arm la, and thus one leg with its apper-taining wheel is detachable from the foot. On the other hand, both ends of the arm lb are bent to the side of the detachable arm section lc in such a way that the points of support of the wheels provided at the ends thereof are located on the side of the removed arm section lc relative to the body of the feeding device. This allows the feeding device to be stationed very close to a wall 15 or another obstruc-2~95~
tion in accordance with Figure 5, in a situationwhere it is necessary to drill holes in such a loca-tion.
Figure 6 shows the feed lever 6 of the feeding device of the invention partially cut away at the axle 5b of the sprocket wheel. There is a pawl joint at the end of the arm 6, constituted by a ratchet wheel 6b toothed on its outer edge and mounted within the discoidal end 6a of the arm, and further a spring-loaded pawl member or stop spring having a restraining action on the teething of the ratchet wheel 6b, said construction being generally known as such and therefore not being more closely set forth in this connection. In accordance with this construc-tion, the ratchet wheel 6b can rotate in either dir-ection in relation to the end 6a of the lever 6, but the latch construction prevents its rotation in one direction. Thus an axle or equivalent can be turned by means of the lever in one direction while the ratchet wheel remains stationary, and the lever can be returned to its initial position while the pawl mechanism acts so as to prevent the axle from turning with the lever. Further, the feed lever has an aux-iliary arm 16 attached to the arm thereof, extending to the axle 5b of the sprocket wheel. A separate aux-iliary wrench 17 is fixed between the auxiliary arm 16 and the end 6a of the feed lever 6 immovably rela-tive to the auxiliary arm 16. It also includes a boss 18 flanged at both ends, extending through an opening provided in the auxiliary arm 16 to the inside of the auxiliary wrench 17 and being movable in the axial direction toward the end 6a of the feed lever 6. Fig-ure 6 illustrates a situation where the axle 5b of the sprocket wheel is shown as pushed into the feed lever. ~he end of the axle 5b has a portion 5c of a ~8~
square cross-section, fitting in the square opening provided in the ratche-t wheel 6b to allow turning of the axle 5b by means of a reversal lever. The auxili-ary wrench 17 has a square or hexagonal wrench socket that is embodied using the conventional construction of tool wrenches so as to allow the end 5c of the axle 5b to be pushed into it, while the notches of the toothed groove match the shape of the axle end 5c and are seated a~ its corners, preventing it from rotating relative to the auxiliary wrench 17. When the drilling machine or equivalent is advanced in the normal way, the boss 18 is depressed, the end of the axle 5b extending only to the edge of the ratchet wheel 6b, and thus the axle 5b is not under the action of the auxiliary wrench 17. In that situation, the axle 5b can be rotated in the manner set forth previously by turning the lever 6 in one direction, so as to make the ratchet wheel 6b rotate about the lever, thereby turning the axle 5b, and correspond-ingly the lever 6 can be returned to its initialposition, so that the ratchet wheel 6b rotates rela-tive to the lever 6 while the axle 5b remains immov-able. When one wishes to reverse the feed rod downw-ardly, the feed lever 6 is pushed toward the axle 5b, upon which the end 5c of the axle 5b is pushed into the auxiliary wrench 17 to be locked thereby, and when the locking latch 7 is simultaneously opened, the eed rod can be turned by moving the lever 6 towards its normal initial position, without the ratchet wheel 6b rotating relative to the arm 6.
After the reversing movement, the lever 7 is rel-eased, and by grasping the arm 6 and depressing the boss 18 in relation to the arm 6, the arm 6 is moved from the position shown in Figure 6 in the direction of the axle 5b, and the auxiliary wrench 17 is dis-2~8958 placed outside the axle 5b, again allowing a feedmovement. The feed lever 6 further has an enlarged handle portion 6c, which is easy to hold, and a boss 19 rotating about its longitudinal axis relative to the feed lever 6, and said feed lever serves as a crank when rotated at the boss, thus facilitating the performing of longitudinal movements and presetting.
In the foregoing specification and drawings, the invention has been explained by way of example, and the invention is in no way restricted thereto.
The body 2 and the feed rod 3 may be mounted the other way round, in which case the body located on top of the feed rod protects the chain from dust and other falling dirt. However, in such a solution the feed lever moves with the body, and therefore it is more inconvenient to use, wherefore the embodiment shown in the figures is more desirable and a better solution from the practical point of view. The body and the feed rod may be of different cross-sections and constructions, as long as they realize the char-acteristic features defined in the claims. The groove or slot for the chain may naturally also be formed in the body either entirely or in part, the chain then correspondingly being entirely or partly disposed on the feed rod on the outer surface thereof. The groove or slot for the chain can also be provided by welding for instance on an outer surface of a tube of a cer-tain shape additional profiles of either flat or other configuration, so that room for a chain remains therebetween. Likewise, instead of a chain and sprocket, a rack and pinion may in principle be used, but these are significantly more expensive in prac-tice. Apart from drilling, the feeding device can be used in connection with the installation of e.g.
boards to the ceiling of a buiIding, in which case a 2~6~5~
board holder is mounted to the end of the feed rod 3, instead of adapters or holders for fixing the dril-ling machine. The feed rod can be, apart from the kind shown in the figures and specification, also of another kind, for instance merely a stationarily mounted crank construction. When the body and the feed rod are disposed in accordance with Figure 1 so that the feed rod is movable within the body and is located above it, it is advantageous to mount a pro-tective bag of cloth or other material to extend fromthe upper portion of the feed rod to the top of the body, said bag being tightly attached to the end of each of these, and allowing the feed rod to move relative to the body simultaneously as it protects the construction between them from dust and dirt.
Claims (10)
1. A feeding device for upward installations, having a tubular body (2) and a feed rod (3) mounted within it in such a way that the body (2) and the feed rod (3) are movable in the longitudinal direc-tion of one another, and displacing means for dis-placing the feed rod (2) and the body (2) relative to one another, c h a r a c t e r i z e d in that the feed rod (3) has an elongated displacing member (3b) in its longitudinal direction, being installed subs-tantially immovably in its longitudinal direction and disposed in the space (3a) between the body (2) and the feed rod (3), that a deflecting sprocket (5a) contacting with the displacing member (3b) is pivo-tally attached to the body (2), for connecting non-slidably therewith, and that a feed lever (6) is con-nected to the deflecting sprocket (5a) for rotating said sprocket wheel (5a), the rotating movement of said deflecting sprocket (5a) moving the displacing member (3b) and thereby the feed rod (3) relative to the body (2) in the longitudinal direction thereof.
2. A feeding device as claimed in claim 1, c h a r a c t e r i z e d in that a groove (3a) is provided in the feed rod (3) in the longitudinal dir-ection thereof, that the displacing member (3b) is mounted in the groove (3a) to be disposed inwardly from the outer surface of the feed rod (3).
3. A feeding device as claimed in claim 1 or claim 2, c h a r a c t e r i z e d in that the feed rod (3) is substantially tubular, that the displacing member (3b) is a chain, and that the deflecting sprocket (5a) is a sprocket wheel matching the chain.
4. A feeding device as claimed in claim 3, c h a r a c t e r i z e d in that the chain (3b) is fixed with its one end to the feed rod (3) substan-tially immovably relative thereto, and that the opposite end of the chain (3b) includes clamping means for tightening the chain (3b) in the lon-gitudinal direction of the feed rod (3).
5. A feeding device as claimed in any one of the preceding claims, c h a r a c t e r i z e d in that the feed lever (6) is provided with a catch mechanism and that it is connected to the deflecting sprocket (5a) through the rotating axle (5b) thereof.
6. A feeding device as claimed in claim 5, c h a r a c t e r i z e d in that the feed lever (6) includes a separate auxiliary wrench (17) located adjacent the ratchet wheel (6b) of the catch mech-anism, provided with teething at the end of the rotating axle (5b), that the feed lever (6) can be pushed in the direction of the rotating axle (5b) in such a way that the end of the rotating axle (5) is pushed into the socket of the auxiliary wrench (17), upon which the auxiliary wrench (17) locks the rotating axle (5b) in relation to the feed lever (6) immovably in both directions.
7. A feeding device as claimed in any one of the preceding claims, c h a r a c t e r i z e d in that it comprises a spring latch (7) acting on the sprocket wheel (5a), retaining the sprocket wheel (5a) stationary and thereby the feed rod (3) immov-able under the action of a certain force smaller than the force acting on the sprocket wheel (5a).
8. A feeding device as claimed in any one of the preceding claims, c h a r a c t e r i z e d in that it comprises a foot (1) provided with arms (1a -1c) crosswise linked to one another, that one of the arms (1c) of the foot is detachable, and that the ends of the arms (1b) transverse to said arm (1c) are bent from the longitudinal direction of the arms to the side of the arm (1c), so that the longitudinal force of the feed rod (3) and the body (2) rests bet-ween the points of support of the arms (1b) and the point of support of the arm (1a) perpendicular there-to.
9. A feeding device as claimed in any one of the preceding claims, c h a r a c t e r i z e d in that the body (2) of the feeding device is fixed to the foot (1), and that a bearer member for a drilling machine or equivalent is fixed to one end of the feed rod (3).
10. A feeding device as claimed in any one of claims 1 to 6, c h a r a c t e r i z e d in that the feed rod (3) is fixed at its one end to the foot (1) and that the bearer for the drilling machine or equivalent is fixed to the other end of the body (2).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI912432 | 1991-05-20 | ||
| FI912432A FI912432A (en) | 1991-05-20 | 1991-05-20 | MATNINGSANORDNING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2068958A1 true CA2068958A1 (en) | 1992-11-21 |
Family
ID=8532554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2068958 Abandoned CA2068958A1 (en) | 1991-05-20 | 1992-05-19 | Feeding device |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA2068958A1 (en) |
| DE (1) | DE4216710A1 (en) |
| FI (1) | FI912432A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526544A (en) * | 2018-04-13 | 2018-09-14 | 陆永柱 | The drilling device to drill for building ceiling or metope |
| CN110202699A (en) * | 2019-06-06 | 2019-09-06 | 中建八局第一建设有限公司 | A kind of full-automatic floor jewel hole equipment |
| CN110227843A (en) * | 2019-06-19 | 2019-09-13 | 刘承福 | A kind of type drilling equipment easy to use for architectural engineering |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051975A (en) * | 2010-11-22 | 2011-05-11 | 中建三局建设工程股份有限公司 | Lever type high-altitude borer |
| EP3421186A1 (en) | 2017-06-26 | 2019-01-02 | Samuel Eugster | Drill holder for automatic drilling of mounting holes in concrete ceilings |
-
1991
- 1991-05-20 FI FI912432A patent/FI912432A/en not_active Application Discontinuation
-
1992
- 1992-05-19 CA CA 2068958 patent/CA2068958A1/en not_active Abandoned
- 1992-05-20 DE DE19924216710 patent/DE4216710A1/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108526544A (en) * | 2018-04-13 | 2018-09-14 | 陆永柱 | The drilling device to drill for building ceiling or metope |
| CN110202699A (en) * | 2019-06-06 | 2019-09-06 | 中建八局第一建设有限公司 | A kind of full-automatic floor jewel hole equipment |
| CN110202699B (en) * | 2019-06-06 | 2024-03-22 | 中建八局第一建设有限公司 | Full-automatic floor drilling equipment |
| CN110227843A (en) * | 2019-06-19 | 2019-09-13 | 刘承福 | A kind of type drilling equipment easy to use for architectural engineering |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4216710A1 (en) | 1992-11-26 |
| FI912432A (en) | 1992-11-21 |
| FI912432A0 (en) | 1991-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |