CA2282106A1 - Brake for a boom mounted free swinging working member - Google Patents
Brake for a boom mounted free swinging working member Download PDFInfo
- Publication number
- CA2282106A1 CA2282106A1 CA 2282106 CA2282106A CA2282106A1 CA 2282106 A1 CA2282106 A1 CA 2282106A1 CA 2282106 CA2282106 CA 2282106 CA 2282106 A CA2282106 A CA 2282106A CA 2282106 A1 CA2282106 A1 CA 2282106A1
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- Canada
- Prior art keywords
- boom
- working member
- brake
- pivot axis
- female body
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/66—Outer or upper end constructions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
- B66C1/58—Gripping members engaging only the external or internal surfaces of the articles and deforming the articles, e.g. by using gripping members such as tongs or grapples
- B66C1/585—Log grapples
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
A brake for a boom mounted free swinging working member which includes a male body and a female body. The female body is mounted to either the boom and a coupling securing the working member to the boom, along a pivot axis permitting relative pivotal movement of the boom and the working member.
The male body is be mounted to the other of the boom and coupling for the working member. The male body matingly engages the female body. A resilient material is positioned in between the male body and the female body. The resilient material dampens relative rotational movement of the male body and the female body about the pivot axis.
The male body is be mounted to the other of the boom and coupling for the working member. The male body matingly engages the female body. A resilient material is positioned in between the male body and the female body. The resilient material dampens relative rotational movement of the male body and the female body about the pivot axis.
Description
TITLE OF THE INVENTION:
Brake For A Boom Mounted Free Swinging Working Member NAMES) OF INVENTOR(S):
James Russell McKay FIELD OF THE INVENTION
The present invention relates to a brake for a boom mounted free swinging working member BACKGROUND OF THE INVENTION
There are numerous applications which require a working member to be mounted so that it swings freely from a boom.
These free swinging working members are sometimes referred to as "dangle heads". Such working members, are used in a number of applications in the forestry industry on equipment such as grapple log skidders, tree harvesting heads, and log loader grapples.
Depending upon the application, free swinging working members can be used without a brake, if suitable care is taken by the operator. In other applications, the working member is subj ect to such violent swinging movements that the operational life of the equipment is drastically reduced in the absence of suitable braking devices which moderate the swinging movement.
In the forestry industry, the use of some form of braking device is, almost without exception, a necessity. For example, a grapple log skidder must move over uneven ground. In the process of doing so, the wheels of the grapple log skidder mount and descend obstacles which causes a side to side movement of the grapple log skidder. Grapple log skidders have a pincer-form grapple dangling at the end of a boom. When the pincer-form grapple is holding some logs, the weight of the logs helps to modify the swinging movement of the pincer-form grapple. However, when the pincer-form grapple is not under load, it swings wildly and smashes against the boom in the absence of a brake.
Brake For A Boom Mounted Free Swinging Working Member NAMES) OF INVENTOR(S):
James Russell McKay FIELD OF THE INVENTION
The present invention relates to a brake for a boom mounted free swinging working member BACKGROUND OF THE INVENTION
There are numerous applications which require a working member to be mounted so that it swings freely from a boom.
These free swinging working members are sometimes referred to as "dangle heads". Such working members, are used in a number of applications in the forestry industry on equipment such as grapple log skidders, tree harvesting heads, and log loader grapples.
Depending upon the application, free swinging working members can be used without a brake, if suitable care is taken by the operator. In other applications, the working member is subj ect to such violent swinging movements that the operational life of the equipment is drastically reduced in the absence of suitable braking devices which moderate the swinging movement.
In the forestry industry, the use of some form of braking device is, almost without exception, a necessity. For example, a grapple log skidder must move over uneven ground. In the process of doing so, the wheels of the grapple log skidder mount and descend obstacles which causes a side to side movement of the grapple log skidder. Grapple log skidders have a pincer-form grapple dangling at the end of a boom. When the pincer-form grapple is holding some logs, the weight of the logs helps to modify the swinging movement of the pincer-form grapple. However, when the pincer-form grapple is not under load, it swings wildly and smashes against the boom in the absence of a brake.
There are a number of brakes used with free swinging working members. One of the most effective consists of a series of steel plates with fibre braking disks sandwiches in between the steel plates. The assembly of disks has a center hole which accommodates a coupler pin. A tightening nut attaches to the coupler pin to exert a clamping pressure upon the disks. As the working member swings, there is friction generated between the plates which moderates the swinging movement. The brake is, of course, only effective if a sufficient degree of friction is present. For that reason, as the fibre braking disks wear, the tightening nut must be further tightened to increase the clamping pressure. This requires frequent adjustments by a conscientious worker.
Unfortunately, some workers are not sufficiently conscientious to adjust the clamping pressure as frequently as they should.
It will be understood that the wear condition of the fibre braking plates must be monitored, and the fibre braking plates periodically replaced.
SUI~2ARY OF THE INVENTION
What is required is an alternative form of brake for a boom mounted free swinging working member that requires less frequent adjustment and maintenance.
According to the present invention there is provided a brake for a boom mounted free swinging working member which includes a male body and a female body. The female body has a receptacle and a mounting bracket. The mounting bracket is adapted to be mounted to either the boom or a coupling securing the working member to the boom, so as to position the receptacle along a pivot axis that defines relative pivotal movement of the boom and the coupling for the working member.
The receptacle has a peripheral sidewall. The male body has a mounting bracket adapted to be mounted to the other of the boom and the coupling for the working member. The male body has a member positioned in the receptacle of the female body.
A resilient material is positioned in between the member of the male body and the peripheral sidewall of the receptacle of the female body. The resilient material dampens relative rotational movement of the male body and the female body about the pivot axis.
The brake, as described above, does not require operator adjustment, nor does it require as frequent maintenance. The resilient material would, typically, be an elastomer compound.
The brake will continue to function as long as the elastomer compound maintains its resilience, which it is anticipated will provide for a long operation life when compared to the life of the fibre braking plates used in the prior art.
BRIEF DESCRIPTION OF THE DRAV~IINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIGURE 1 is a perspective view of a brake for a boom mounted free swinging working member constructed in accordance with the teachings of the present invention in a first rotational position.
FIGURE 2 is an end elevation view, in section, of the brake illustrated in FIGURE 1.
FIGURE 3 is a perspective view of the brake illustrated in FIGURE 1, in a second rotational position.
FIGURE 4 is an end elevation view, in section, of the brake illustrated in FIGURE 3.
FIGURE 5 is a perspective view of a boom mounted free swinging working member equipped with the brake illustrated in FIGURE 1.
FIGURE 6 is a detailed side view of the brake secured to the boom mounted free swinging working member illustrated in FIGURE 5.
FIGURE 7 is an exploded perspective view of an alternative embodiment of a brake for a boom mounted free swinging working member constructed in accordance with the teachings of the present invention (component parts not to scale).
Unfortunately, some workers are not sufficiently conscientious to adjust the clamping pressure as frequently as they should.
It will be understood that the wear condition of the fibre braking plates must be monitored, and the fibre braking plates periodically replaced.
SUI~2ARY OF THE INVENTION
What is required is an alternative form of brake for a boom mounted free swinging working member that requires less frequent adjustment and maintenance.
According to the present invention there is provided a brake for a boom mounted free swinging working member which includes a male body and a female body. The female body has a receptacle and a mounting bracket. The mounting bracket is adapted to be mounted to either the boom or a coupling securing the working member to the boom, so as to position the receptacle along a pivot axis that defines relative pivotal movement of the boom and the coupling for the working member.
The receptacle has a peripheral sidewall. The male body has a mounting bracket adapted to be mounted to the other of the boom and the coupling for the working member. The male body has a member positioned in the receptacle of the female body.
A resilient material is positioned in between the member of the male body and the peripheral sidewall of the receptacle of the female body. The resilient material dampens relative rotational movement of the male body and the female body about the pivot axis.
The brake, as described above, does not require operator adjustment, nor does it require as frequent maintenance. The resilient material would, typically, be an elastomer compound.
The brake will continue to function as long as the elastomer compound maintains its resilience, which it is anticipated will provide for a long operation life when compared to the life of the fibre braking plates used in the prior art.
BRIEF DESCRIPTION OF THE DRAV~IINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIGURE 1 is a perspective view of a brake for a boom mounted free swinging working member constructed in accordance with the teachings of the present invention in a first rotational position.
FIGURE 2 is an end elevation view, in section, of the brake illustrated in FIGURE 1.
FIGURE 3 is a perspective view of the brake illustrated in FIGURE 1, in a second rotational position.
FIGURE 4 is an end elevation view, in section, of the brake illustrated in FIGURE 3.
FIGURE 5 is a perspective view of a boom mounted free swinging working member equipped with the brake illustrated in FIGURE 1.
FIGURE 6 is a detailed side view of the brake secured to the boom mounted free swinging working member illustrated in FIGURE 5.
FIGURE 7 is an exploded perspective view of an alternative embodiment of a brake for a boom mounted free swinging working member constructed in accordance with the teachings of the present invention (component parts not to scale).
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment, a brake for a boom mounted free swinging working member generally identified by reference numeral 10, will now be described with reference to FIGURES 1 through 6. An alternative embodiment for a brake assembly for a boom mounted free swinging working member, generally identified by reference numeral 100, will be described with reference to FIGURE 7.
Referring to FIGURES 5 and 6, brake for a boom mounted free swinging working member 10 includes a first brake assembly 11, a second brake assembly 12, and a working member 14 freely swinging from a remote end 15 of a boom 16. Working member 14 is suspended from boom 16 and swings freely about a first pivot axis 18 and a second pivot axis 20. In most installations, each of first pivot axis 18 and second pivot axis 20 will be substantially horizontal, with first pivot axis 18 substantially at right angles to second pivot axis 20.
Referring to FIGURE 6, first brake assembly 11 has a first female body 22 and a first male body 24. Second brake assembly 12 has a second female body 23 substantially similar to first female body 22 and a second male body 25 substantially similar to first male body 24. Referring to FIGURE 1 and using first brake assembly 11 as representative of both first brake assembly 11 and second brake assembly 12, first female body 22 has a first end 26 and a second end 28. A mounting bracket 30 is positioned at first end 26 of first female body 22.
Mounting bracket 30 has a first end 32, a second end 34, a first face 36 and a second face 38. Referring to FIGURE 5, First mounting bracket 30 is securable to either boom 16 or a coupling 17 by which working member 14 is secured to boom 16, as will hereinafter be further described. Referring to FIGURE
1, mounting bracket 30 is securable by passing bolts 40 through bolt receiving passages 42 at second end 34 of first mounting bracket 30. A first receptacle 44 extends in an offset cantilever fashion from first end 32 of mounting bracket 30 of first female body 22. Referring to FIGURE 6, first receptacle 44 is positioned along first pivot axis 18. Referring to FIGURE 2, first receptacle 44 has a peripheral sidewall 46 5 defining an interior passage 48. Referring to FIGURE 1, first male body 24 has a first end 50 and a second end 52. A
mounting bracket 54 is positioned at first end 50 of first male body 20. Mounting bracket 54 has a first end 56, a second end 58, a first face 60 and a second face 62. Mounting bracket 54 is securable to either boom 16 or a coupling 17 by which working member 14 is secured to boom 16, as will hereinafter be further described. This is accomplished by passing bolts 40 through bolt receiving passages 42 at second end 58 of mounting bracket 54. A first member 60 extends from first face 60 at second end 58 of third mounting bracket 54. First member 60 is positioned in the first receptacle 44 of the first female body 22. Referring to FIGURE 2, a resilient material 62, such as rubber or elastomer plastic, is positioned in passage 48 in between first member 60 of first male body 24 and peripheral sidewall 46 of first receptacle 44 of first female body 22.
Resilient material 62 dampens relative rotational movement of first male body 24 and first female body 22 about first pivot axis 18, as will hereinafter be further described. Referring to FIGURE l, a first end cap 64 is at second end 52 of first male member 24.
Referring to FIGURES 1 and 3, first female member 22 and first male member 24 are mutually rotatable about first pivot axis 18 between a relaxed starting position illustrated in FIGURES 1, 2 and a torsional braking position illustrated in FIGURES 3, 4. When first female body 22 is rotated relative to first male body 24 about pivot axis 18, as illustrated in FIGURE 3, resilient material 62 is subjected to a torsional compressive force, as illustrated by lines 66 in FIGURE 4.
Resilient material 62 resists the torsional force, and thereby dampens the rotational movement about first pivot axis 18.
The preferred embodiment, a brake for a boom mounted free swinging working member generally identified by reference numeral 10, will now be described with reference to FIGURES 1 through 6. An alternative embodiment for a brake assembly for a boom mounted free swinging working member, generally identified by reference numeral 100, will be described with reference to FIGURE 7.
Referring to FIGURES 5 and 6, brake for a boom mounted free swinging working member 10 includes a first brake assembly 11, a second brake assembly 12, and a working member 14 freely swinging from a remote end 15 of a boom 16. Working member 14 is suspended from boom 16 and swings freely about a first pivot axis 18 and a second pivot axis 20. In most installations, each of first pivot axis 18 and second pivot axis 20 will be substantially horizontal, with first pivot axis 18 substantially at right angles to second pivot axis 20.
Referring to FIGURE 6, first brake assembly 11 has a first female body 22 and a first male body 24. Second brake assembly 12 has a second female body 23 substantially similar to first female body 22 and a second male body 25 substantially similar to first male body 24. Referring to FIGURE 1 and using first brake assembly 11 as representative of both first brake assembly 11 and second brake assembly 12, first female body 22 has a first end 26 and a second end 28. A mounting bracket 30 is positioned at first end 26 of first female body 22.
Mounting bracket 30 has a first end 32, a second end 34, a first face 36 and a second face 38. Referring to FIGURE 5, First mounting bracket 30 is securable to either boom 16 or a coupling 17 by which working member 14 is secured to boom 16, as will hereinafter be further described. Referring to FIGURE
1, mounting bracket 30 is securable by passing bolts 40 through bolt receiving passages 42 at second end 34 of first mounting bracket 30. A first receptacle 44 extends in an offset cantilever fashion from first end 32 of mounting bracket 30 of first female body 22. Referring to FIGURE 6, first receptacle 44 is positioned along first pivot axis 18. Referring to FIGURE 2, first receptacle 44 has a peripheral sidewall 46 5 defining an interior passage 48. Referring to FIGURE 1, first male body 24 has a first end 50 and a second end 52. A
mounting bracket 54 is positioned at first end 50 of first male body 20. Mounting bracket 54 has a first end 56, a second end 58, a first face 60 and a second face 62. Mounting bracket 54 is securable to either boom 16 or a coupling 17 by which working member 14 is secured to boom 16, as will hereinafter be further described. This is accomplished by passing bolts 40 through bolt receiving passages 42 at second end 58 of mounting bracket 54. A first member 60 extends from first face 60 at second end 58 of third mounting bracket 54. First member 60 is positioned in the first receptacle 44 of the first female body 22. Referring to FIGURE 2, a resilient material 62, such as rubber or elastomer plastic, is positioned in passage 48 in between first member 60 of first male body 24 and peripheral sidewall 46 of first receptacle 44 of first female body 22.
Resilient material 62 dampens relative rotational movement of first male body 24 and first female body 22 about first pivot axis 18, as will hereinafter be further described. Referring to FIGURE l, a first end cap 64 is at second end 52 of first male member 24.
Referring to FIGURES 1 and 3, first female member 22 and first male member 24 are mutually rotatable about first pivot axis 18 between a relaxed starting position illustrated in FIGURES 1, 2 and a torsional braking position illustrated in FIGURES 3, 4. When first female body 22 is rotated relative to first male body 24 about pivot axis 18, as illustrated in FIGURE 3, resilient material 62 is subjected to a torsional compressive force, as illustrated by lines 66 in FIGURE 4.
Resilient material 62 resists the torsional force, and thereby dampens the rotational movement about first pivot axis 18.
As previously indicated, the operation of second brake assembly 12 parallels that of first braking assembly 11.
Referring to FIGURE 6, second female body 23 of second brake assembly 12 has a second receptacle 45 positioned along second pivot axis 20, extending from a mounting bracket 31. A second member 61 extends from a securing member 55 of second male body 25 and is positioned in the second receptacle 45 of second female body 23. Referring to FIGURE 5, second male body 25 has a second end cap 65. Resilient material 62 is positioned between second member 61 of second male body 25 and receptacle 45 of second female body 23, which dampens relative rotational movement of second male body 25 and second female body 23 about second pivot axis 20.
Referring to FIGURES 5 and 6, brake 10 is mounted as will now be described. As movement about more than one axis is desired in the illustrated application, coupling 17 includes a universal joint member 68 which is mounted by means of a first pivot 70 to remote end 15 of boom 16. Universal joint member 68 is required in order to accommodate second pivot axis 20 at substantially 90 degrees to first pivot axis 18. If movement were restricted to about a single axis 18, universal joint member 68 would not be required. First male body 24 is mounted to remote end 15 of boom 16. First female body is mounted to universal member 68, so that first pivot 70, first receptacle 44 and first pivot axis 18 are collinear. Working member 14 is mounted to universal member 68 by means of a second pivot 72. Second female body 23 is mounted to universal member 68 so that second pivot 72, second receptacle 45 and second pivot axis 20 are collinear. Second male body 25 is mounted to working member 14. In the illustrated embodiment working member 14 is a grapple. It will be recognized that alternative working members 14 can be suspended from boom 16 in a like manner. It will be recognized that an alternative mounting arrangement will have first female body 22 mounted to remote end 15 of boom 16 and f first male body 24 mounted to universal member 68. It will be recognized that another alternative mounting arrangement will have second female body 23 mounted to working member 14 and second male body 25 mounted to universal member 68.
Referring to FIGURE 7, there is illustrated an alternative embodiment of brake assembly 100. Whereas brake 10 described above is intended for external mounting. brake assembly 100 is intended for internal mounting. Brake assembly 100 has a female body 122 and a male body 124. Female body 122 has a first end 126 and a second end 128 and peripheral sidewalls 146 defining an interior passage 148 with a square cross-sectional shape extending the length of an axis 118 of female body 122.
Male body 124 has a first end 150 and a second end 152. Male body 124 extends through interior passage 148 and past each of first end 126 and second end 128 of female body 122 along axis 118. A resilient material 162, such as rubber or elastomer plastic, is positioned in passage 148 in between male body 124 and peripheral sidewall 146 of female body 122. A rectangular cross-sectioned groove 202 extends diagonally between opposed corners 204 of each of first end 150 and second end 152 of male body 124. A pair of collars 206 is provided, each collar 206 having a first face 208 and a second face 210. Each collar 206 has a passage 212 extending from first face 208 to second face 210. Passage 212 is square and has interior dimensions sized to closely receive one of first end 150 or second end 152 of male body 124. A pair of securing plates 214 is provided.
Each of securing plates 214 has external dimensions sized to fit closely within groove 202 at one of first end 150 or second end 152 of male body 124. Each securing plate 214 has bolt holes 216. When securing plate 214 is located in groove 202 bolt holes 216 are aligned with bolt receiving holes 218 at either of first end 150 or second end 152 of male member 124.
One of collars 206 is secured about each of first end 150 and second end 152 by one of securing plates 214 that is bolted to male body 124 by securing bolts 220 into bolt receiving holes 218.
Referring to FIGURE 6, second female body 23 of second brake assembly 12 has a second receptacle 45 positioned along second pivot axis 20, extending from a mounting bracket 31. A second member 61 extends from a securing member 55 of second male body 25 and is positioned in the second receptacle 45 of second female body 23. Referring to FIGURE 5, second male body 25 has a second end cap 65. Resilient material 62 is positioned between second member 61 of second male body 25 and receptacle 45 of second female body 23, which dampens relative rotational movement of second male body 25 and second female body 23 about second pivot axis 20.
Referring to FIGURES 5 and 6, brake 10 is mounted as will now be described. As movement about more than one axis is desired in the illustrated application, coupling 17 includes a universal joint member 68 which is mounted by means of a first pivot 70 to remote end 15 of boom 16. Universal joint member 68 is required in order to accommodate second pivot axis 20 at substantially 90 degrees to first pivot axis 18. If movement were restricted to about a single axis 18, universal joint member 68 would not be required. First male body 24 is mounted to remote end 15 of boom 16. First female body is mounted to universal member 68, so that first pivot 70, first receptacle 44 and first pivot axis 18 are collinear. Working member 14 is mounted to universal member 68 by means of a second pivot 72. Second female body 23 is mounted to universal member 68 so that second pivot 72, second receptacle 45 and second pivot axis 20 are collinear. Second male body 25 is mounted to working member 14. In the illustrated embodiment working member 14 is a grapple. It will be recognized that alternative working members 14 can be suspended from boom 16 in a like manner. It will be recognized that an alternative mounting arrangement will have first female body 22 mounted to remote end 15 of boom 16 and f first male body 24 mounted to universal member 68. It will be recognized that another alternative mounting arrangement will have second female body 23 mounted to working member 14 and second male body 25 mounted to universal member 68.
Referring to FIGURE 7, there is illustrated an alternative embodiment of brake assembly 100. Whereas brake 10 described above is intended for external mounting. brake assembly 100 is intended for internal mounting. Brake assembly 100 has a female body 122 and a male body 124. Female body 122 has a first end 126 and a second end 128 and peripheral sidewalls 146 defining an interior passage 148 with a square cross-sectional shape extending the length of an axis 118 of female body 122.
Male body 124 has a first end 150 and a second end 152. Male body 124 extends through interior passage 148 and past each of first end 126 and second end 128 of female body 122 along axis 118. A resilient material 162, such as rubber or elastomer plastic, is positioned in passage 148 in between male body 124 and peripheral sidewall 146 of female body 122. A rectangular cross-sectioned groove 202 extends diagonally between opposed corners 204 of each of first end 150 and second end 152 of male body 124. A pair of collars 206 is provided, each collar 206 having a first face 208 and a second face 210. Each collar 206 has a passage 212 extending from first face 208 to second face 210. Passage 212 is square and has interior dimensions sized to closely receive one of first end 150 or second end 152 of male body 124. A pair of securing plates 214 is provided.
Each of securing plates 214 has external dimensions sized to fit closely within groove 202 at one of first end 150 or second end 152 of male body 124. Each securing plate 214 has bolt holes 216. When securing plate 214 is located in groove 202 bolt holes 216 are aligned with bolt receiving holes 218 at either of first end 150 or second end 152 of male member 124.
One of collars 206 is secured about each of first end 150 and second end 152 by one of securing plates 214 that is bolted to male body 124 by securing bolts 220 into bolt receiving holes 218.
Brake assembly 100 is secured to a boom (not shown) and a free swinging working member (not shown) by means of a coupler 222. Coupler 222 has first body 224 and a second body 226 receivable within a cavity 228 in first body 224 between spaced apart arms 236 extending from a main portion 238 of first body 224. One of first body 224 and second body 226 is secured to one of the boom (not shown) and the free swinging working member (not shown) and the other of the first body 224 and the second body 226 is secured to the other of the boom and the free swinging working member. Second body 226 has a square cross-sectioned passage 230 extending from a first end 232 to a second end 234. Passage 230 in second body has dimensions sized to closely receive peripheral sidewalls 146 of female body 122. Coaxial circular passages 240 extend throughout each of spaced apart arms 236 extending from first body 224. The diameter of each of circular passages 240 is sized to allow each of first end 150 or second end 152 of male body 124 to be received within one of circular passages 240 when female body 122 is received within second body 226 located within cavity 228 in first body 224, and for male body 124 to freely rotate within circular passages 240 when male body 124 is so received.
Collars 206 secured at each of first end 150 and second end 152 of male body 124, as described above, secure brake assembly 100 within coupling member 222.
Brake assembly 100 is installed onto coupling member 222 as will now be described. Second body 226 is installed within cavity 228 of first body 224 of coupling member 222 so that circular passages 240 and square cross-sectioned passage 230 are coaxial. The combination of female body 122 and male body 124 is inserted along pivot axis 118 through each of circular passages 240 until female body 122 extends through square cross-sectioned passage 230 in second body 226 of coupling member 222. One of collars 206 is secured at each of first end 150 and second end 152 of male member 124 using securing plates 214 and bolts 220. When brake assembly 100 is installed on coupling member 222 as described above, mutual rotation of female member 122 and male member 124 about pivot axis 118 is damped by the resistance to the mutual rotation provided by resilient material 162.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
Collars 206 secured at each of first end 150 and second end 152 of male body 124, as described above, secure brake assembly 100 within coupling member 222.
Brake assembly 100 is installed onto coupling member 222 as will now be described. Second body 226 is installed within cavity 228 of first body 224 of coupling member 222 so that circular passages 240 and square cross-sectioned passage 230 are coaxial. The combination of female body 122 and male body 124 is inserted along pivot axis 118 through each of circular passages 240 until female body 122 extends through square cross-sectioned passage 230 in second body 226 of coupling member 222. One of collars 206 is secured at each of first end 150 and second end 152 of male member 124 using securing plates 214 and bolts 220. When brake assembly 100 is installed on coupling member 222 as described above, mutual rotation of female member 122 and male member 124 about pivot axis 118 is damped by the resistance to the mutual rotation provided by resilient material 162.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
Claims (18)
1. A brake for a boom mounted free swinging working member, comprising:
a female body having a receptacle and a mounting bracket adapted to be mounted to one of a boom and a coupling securing a working member to the boom, so as to position the receptacle along a pivot axis for relative pivotal movement of the boom and the coupling for the working member, the receptacle having a peripheral sidewall;
a male body having a mounting bracket adapted to be mounted to the other of the boom and the coupling for the working member, the male body having a member positioned in the receptacle of the female body;
a resilient material positioned in between the member of the male body and the peripheral sidewall of the receptacle of the female body, the resilient material dampening relative rotational movement of the male body and the female body about the pivot axis.
a female body having a receptacle and a mounting bracket adapted to be mounted to one of a boom and a coupling securing a working member to the boom, so as to position the receptacle along a pivot axis for relative pivotal movement of the boom and the coupling for the working member, the receptacle having a peripheral sidewall;
a male body having a mounting bracket adapted to be mounted to the other of the boom and the coupling for the working member, the male body having a member positioned in the receptacle of the female body;
a resilient material positioned in between the member of the male body and the peripheral sidewall of the receptacle of the female body, the resilient material dampening relative rotational movement of the male body and the female body about the pivot axis.
2. A brake for a boom mounted free swinging working member, comprising:
a boom;
a working member suspended to swinging freely from the boom about at least one pivot axis;
a female body mounted to one of the boom and a coupling for securing the working member to the boom, the female body having a receptacle positioned along the at least one pivot axis, the receptacle having a peripheral sidewall;
a male body mounted to the other of the boom and the coupling for the working member, the male body having a member positioned in the receptacle of the female body;
a resilient material positioned in between the member of the male body and the peripheral sidewall of the receptacle of the female body, the resilient material dampening relative rotational movement of the male body and the female body about the at least one pivot axis.
a boom;
a working member suspended to swinging freely from the boom about at least one pivot axis;
a female body mounted to one of the boom and a coupling for securing the working member to the boom, the female body having a receptacle positioned along the at least one pivot axis, the receptacle having a peripheral sidewall;
a male body mounted to the other of the boom and the coupling for the working member, the male body having a member positioned in the receptacle of the female body;
a resilient material positioned in between the member of the male body and the peripheral sidewall of the receptacle of the female body, the resilient material dampening relative rotational movement of the male body and the female body about the at least one pivot axis.
3. The brake for a boom mounted free swinging working member as defined in Claim 2, wherein the female body has a mounting bracket with bolt receiving apertures and is mounted to one of the boom and the working member by bolts.
4. The brake for a boom mounted free swinging working member as defined in Claim 2, wherein the male body has a mounting bracket with bolt receiving apertures and is mounted to the other of the boom and the working member by bolts.
5. The brake for a boom mounted free swinging working member as defined in Claim 2, wherein the resilient material is an elastomer compound.
6. The brake for a boom mounted free swinging working member as defined in Claim 2, wherein the female body is mounted to the boom and male body is mounted to the coupling securing the working member to the boom.
7. The brake for a boom mounted free swinging working member as defined in Claim 2, wherein the male body is mounted to the boom and female body is mounted to the coupling securing the working member to the boom.
8. The brake for a boom mounted free swinging working member as defined in Claim 2 , wherein the working member is a grapple.
9. The brake for a boom mounted free swinging working member as defined in Claim 2, wherein the at least one pivot axis includes a first pivot axis and a second pivot axis substantially perpendicular to the first pivot axis.
10. A brake for a boom mounted free swinging working member, comprising:
a boom;
a working member suspended to swinging freely from the boom about a first pivot axis and a second pivot axis;
a first female body mounted to one of the boom and a coupling securing the working member to the boom, the first female body having a first receptacle positioned along the first pivot axis, the receptacle having a peripheral sidewall;
a f first male body mounted to the other of the boom and the coupling for the working member, the first male body having a first member positioned in the first receptacle of the first female body;
a resilient material positioned in between the first member of the first male body and the peripheral sidewall of the first receptacle of the first female body, the resilient material dampening relative rotational movement of the first male body and the first female body about the first pivot axis;
a second female body mounted to one of the boom and the coupling securing the working member to the boom, the second female body having a second receptacle positioned along the second pivot axis, the receptacle having a peripheral sidewall;
a second male body mounted to the other of the boom and the coupling for the working member, the second male body having a second member positioned in the second receptacle of the second female body; and a resilient material positioned in between the second member of the second male body and the peripheral sidewall of the second receptacle of the second female body, the resilient material dampening relative rotational movement of the second male body and the second female body about the second pivot axis.
a boom;
a working member suspended to swinging freely from the boom about a first pivot axis and a second pivot axis;
a first female body mounted to one of the boom and a coupling securing the working member to the boom, the first female body having a first receptacle positioned along the first pivot axis, the receptacle having a peripheral sidewall;
a f first male body mounted to the other of the boom and the coupling for the working member, the first male body having a first member positioned in the first receptacle of the first female body;
a resilient material positioned in between the first member of the first male body and the peripheral sidewall of the first receptacle of the first female body, the resilient material dampening relative rotational movement of the first male body and the first female body about the first pivot axis;
a second female body mounted to one of the boom and the coupling securing the working member to the boom, the second female body having a second receptacle positioned along the second pivot axis, the receptacle having a peripheral sidewall;
a second male body mounted to the other of the boom and the coupling for the working member, the second male body having a second member positioned in the second receptacle of the second female body; and a resilient material positioned in between the second member of the second male body and the peripheral sidewall of the second receptacle of the second female body, the resilient material dampening relative rotational movement of the second male body and the second female body about the second pivot axis.
11. The brake for a boom mounted free swinging working member as defined in Claim 10, wherein the female body has a mounting bracket with bolt receiving apertures and is mounted to one of the boom and the coupling for the working member by bolts.
12. The brake for a boom mounted free swinging working member as defined in Claim 10, wherein the male body has a mounting bracket with bolt receiving apertures and is mounted to the other of the boom and the coupling for the working member by bolts.
13. The brake for a boom mounted free swinging working member as defined in Claim 10, wherein the resilient material is an elastomer compound.
14. The brake for a boom mounted free swinging working member as defined in Claim 10, wherein the female body is mounted to the boom and male body is mounted to the coupling for the working member.
15. The brake for a boom mounted free swinging working member as defined in Claim 10, wherein the male body is mounted to the boom and female body is mounted to the coupling for the working member.
16. The brake for a boom mounted free swinging working member as defined in Claim 10, wherein the working member is a grapple.
17. The brake for a boom mounted free swinging working member as defined in Claim 10, wherein the first pivot axis is substantially horizontal and the second pivot axis is substantially horizontal and is perpendicular to the first pivot axis.
18. A brake for a boom mounted free swinging working member, comprising:
a boom;
a working member suspended to swinging freely from the boom about a pivot axis;
a female body mounted to one of the boom and a coupling securing the working member to the boom along the pivot axis;
a male body mounted to the other of the boom and the coupling for the working member, the male body matingly engaging the female body; and a resilient material positioned between the male body and the female body, the resilient material dampening relative rotational movement of the male body and the female body about the pivot axis.
a boom;
a working member suspended to swinging freely from the boom about a pivot axis;
a female body mounted to one of the boom and a coupling securing the working member to the boom along the pivot axis;
a male body mounted to the other of the boom and the coupling for the working member, the male body matingly engaging the female body; and a resilient material positioned between the male body and the female body, the resilient material dampening relative rotational movement of the male body and the female body about the pivot axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2282106 CA2282106A1 (en) | 1999-09-14 | 1999-09-14 | Brake for a boom mounted free swinging working member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2282106 CA2282106A1 (en) | 1999-09-14 | 1999-09-14 | Brake for a boom mounted free swinging working member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2282106A1 true CA2282106A1 (en) | 2001-03-14 |
Family
ID=4164120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2282106 Abandoned CA2282106A1 (en) | 1999-09-14 | 1999-09-14 | Brake for a boom mounted free swinging working member |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2282106A1 (en) |
-
1999
- 1999-09-14 CA CA 2282106 patent/CA2282106A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |