US20020033585A1 - Latch assembly arrangement for tag axle - Google Patents
Latch assembly arrangement for tag axle Download PDFInfo
- Publication number
- US20020033585A1 US20020033585A1 US09/507,606 US50760600A US2002033585A1 US 20020033585 A1 US20020033585 A1 US 20020033585A1 US 50760600 A US50760600 A US 50760600A US 2002033585 A1 US2002033585 A1 US 2002033585A1
- Authority
- US
- United States
- Prior art keywords
- latch
- latch hook
- base plate
- hook
- auxiliary axle
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D61/00—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern
- B62D61/12—Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with variable number of ground engaging wheels, e.g. with some wheels arranged higher than others, or with retractable wheels
Definitions
- the present invention relates generally to auxiliary axle systems for load-hauling vehicles and, more particularly, to a stowable tag axle system that includes a safety latch which positively latches the axle in the stowed position when the axle is retracted or disabled for repairs.
- the invention provides an improved latching system for securing the tag axle which has a compact and unitary construction which readily installs on a truck body, is easily positionally adjusted and in which the mechanism is shielded from clogging debris and corrosive materials in the case of a transit mixer application.
- auxiliary axle systems are well known and often associated with a variety of types of load-hauling vehicles, particularly those accustomed to time-varying loading, such as dump trucks, refuse collection vehicles and transit concrete mixers.
- Such vehicles typically include a chassis or frame, a cab and a dedicated truck body mounted on the chassis behind the cab.
- Such vehicles also include a forward steering axle placed near the front of the cab and one or more sets of drive axles spaced behind the steering axle, the drive axles often being provided in a dual axle arrangement.
- the auxiliary axle systems furnish additional load carrying capacity by adding an axle for assisting the steering and drive axles in supporting the load and in adjusting the inter-axle distance or increasing the overall front-to-rear axle span distance for the vehicle.
- the tag axle system assist in balancing the load carried by, for example, a transit mixing cement truck, but generally it also enables the truck to carry a higher legal total payload than would otherwise be permitted because weight restrictions placed on vehicles traveling over highways are typically measured in terms of load per axle in combination with overall spacing between the vehicle axles.
- tag axle systems generally consisting of a rear tubular cross member carrying spaced wheel assemblies and carried by a pair of spaced tag axle arms which, in turn, are pivotally mounted to the rear portion of a truck chassis according to a generally known arrangement.
- Linear reciprocating operating devices typically hydraulic cylinders, or pneumatic devices are employed to pivot the tag axle system between a raised or stowed position and a lowered or ground-engaging position.
- FIG. 1 illustrates a fragmentary side elevational view of a transit mixer with a tag axle assembly in its raised or stowed position.
- the view includes a portion of a vehicle frame 12 , dual axle drive wheels 14 , a mixing drum 16 partially supported by a rear mixing drum mount support frame 18 and a tag axle assembly which includes a pair of arms 20 pivotally mounted at one of their ends to the frame to the vehicle.
- a tag axle 22 carrying a tag wheel 24 is mounted to the opposite end of each arm 20 .
- a common torque tube is shown at 26 and a shaped cam plate at 28 which cooperates with a cam follower wheel 30 .
- Retraction air actuators are shown at 32 with associated arms 34 .
- a further cam link assembly is provided which includes a pair of cam link arms, one of which is shown at 40 mounted from a pivot 42 and a pair of deployment air springs, one of which is shown at 44 which is affixed to the support frame 18 of the mixing drum using suitable means and to the cam link arms 40 .
- an external latching mechanism which includes a hook 50 pivotally mounted at one end to the mixing drum mount 18 and situated so that it can engage a pin 52 attached to the arm 20 of the tag axle assembly at an appropriate location.
- the hook is further provided with a biasing spring 53 and a pneumatic hook actuator at 54 . Inflation of the actuator 54 overcomes the biasing of the spring 53 thereby releasing the pin 52 from the grasp of the hook 50 . Otherwise, the biasing spring provides sufficient force to retain the pin 52 in the hook 50 .
- the present invention provides a compact modular safety latch assembly for retaining an associated pivoting tag axle assembly in a stowed position when not in use and when the system must be retained in an elevated position with the vehicle shut off as for the performance of maintenance on the vehicle.
- the system employs a cylinder-operated, spring-biased pivoting hook arrangement assembled as a modular unit or a base plate for attachment to and behind the rear mixing drum mount support metal structure of a transit mixer or the like so that only the catch portion of the hook member protrudes through a slot in the support plate of the drum support structure.
- the modular safety latch system may be mounted through slotted openings in the plate of the vehicle which cooperate with slotted openings in the base or support plate directed in the opposite direction so that both vertical and horizontal adjustment is provided in the system for easy mounting and final alignment adjustment of the relative location of the latch hook so that the retention pin attached to the tag axle swing frame can be captured as desired.
- the moving parts of the system are all located behind the metal support plate and are less likely to encounter clogging and corrosive materials in use.
- the detailed embodiment of the modular safety latch itself includes a base plate carrying a pair of shaped, spaced parallel flange members fixed to it and which, in turn, carry the latch hook pivotally journaled on a pivot pin spanning and mounted in the flanges.
- the latch hook is a member of dedicated shape having a top or forward curved hook section above the pivot and a lower or rearward tail section below the pivot and a fluid cylinder is provided which is bolted to the flanges in a manner such that extension of the rod associated with the cylinder overcomes spring biasing (below) pushes on the tail of the latch hook and pivots the latch hook away from and releases the latch pin (as the system is mounted on the vehicle).
- a counter-biasing tension spring extends between the latch hook and a member attached to the rear of the latch-operating cylinder to pivot and hold the latch against the cylinder rod and in a fully lowered or latched position when the operating rod is retracted or collapsed into the cylinder.
- the operating cylinder is a normally retracted or collapsed and assumes this position when the fluid (hydraulic or pneumatic) pressure is lost in the cylinder.
- the biasing spring pivots the latch fully downward, placing it in the pin-capture position so that a stowed tag axle system will remain engaged by the latch hook until positive pressure operates the cylinder to extend the rod and overcome the spring tension thereby pivoting and raising the latch hook to release the pin.
- the invention provides a modular unit which is readily installed, adjusted and replaced as necessary during the life of the vehicle.
- FIG. 1 is a fragmentary side view showing a tag axle assembly in the raised position and utilizing a latch in accordance with the prior art
- FIG. 2 is a side view of a transit concrete mixing work vehicle having an auxiliary axle of a class suitable for use with the latch of the present invention shown in the deployed position;
- FIG. 3 depicts a side view of the auxiliary axle assembly depicted in FIG. 2;
- FIG. 4 is a top view of the auxiliary axle assembly of FIG. 3;
- FIG. 5 is a perspective view of a modular tag axle latching system assembly constructed in accordance with the invention.
- FIG. 6 is a fragmentary perspective view from the outside showing the modular latch of the invention installed through the plate metal of a transit mixer rear drum support structure.
- FIG. 2 shows a transit concrete mixing truck 100 having a cab 102 and a drum 104 mounted behind the cab for receiving materials through a hopper 106 , internally mixing concrete and dispensing same through the rear of the drum 104 .
- the vehicle includes a chassis 108 on which the drum and the cab are mounted and which is provided with a steering axle 110 and a dual axle drive wheel arrangement 112 .
- the chassis further includes a pair of spaced parallel chassis members, one of which is shown at 114 , which extend along the length of work vehicle 100 and from which an auxiliary axle, generally 200 , is pivotally mounted, as shown in more detail in FIGS. 3 and 4.
- the auxiliary axle assembly 200 includes an arm assembly, generally at 210 , a rear assembly, generally at 230 , and an actuator assembly, generally at 250 .
- the arm assembly 210 includes a pair of spaced rearward extending arms 212 and between which an auxiliary axle 213 is mounted at the rear-most end of arms 212 .
- a tie rod may be provided as at 214 .
- the arms 212 which are substantially parallel and the front-most end of arms 212 is pivotally mounted to chassis members 130 by the rear assembly 230 , as will be described.
- the arms 212 are joined by a common torque tube 216 and a lever arm shown at 218 is affixed to and extends upward from the tube 216 and supports a spaced pillow block mounting arrangement as at 220 are affixed thereto and secure a mounting pin or shaft as at 222 .
- a fender is shown at 224 .
- the rear assembly 230 further includes a pair of pivot block brackets 232 affixed as by welding to chassis elements 114 .
- a pair of pivot shafts or pins 234 are mounted in a pair of pivot blocks 236 and each arm 212 is pivotally mounted about pivot shaft 234 .
- Actuator assembly 250 includes a double-acting hydraulic cylinder actuator 252 which includes a rod 254 mounted in pivoted relation to the blocks 220 as by shaft or pin 222 .
- the blind end of cylinder 252 is also pivotally mounted as at 254 by a clevis arrangement including mounting blocks 256 mounted in a cylinder cross member 258 .
- a retention pin is indicated by 226 .
- This pin is normally mounted on the inside of either of the arms 212 and is used in conjunction with the modular latch arrangement of the invention to retain the tag wheels in the raised or stowed position as desired.
- the latch mechanism itself is shown in the greatly enlarged perspective view of FIG. 5.
- the modular latch system generally 300 , includes a base or mounting plate 302 having a plurality of slotted mounting holes 304 and in an elongated central slot 306 .
- a pair of spaced parallel shaped mounting flange members 308 are affixed to the base plate 302 and are provided with openings 310 which, in turn, carry a common mounting shaft or pin 312 on which a latch member 314 is mounted to pivot or rotate.
- the latch member 314 includes a hook arrangement 316 preferably having a particular internal curvature 318 adapted to releasably grab a pin member 226 affixed to an arm 212 of a pivoting tag axle arrangement.
- the shaped latch hook member 314 further includes a tail section 322 and a tension spring 324 attached thereto as by a bolt member 326 which threadably engages the tail portion 322 of the latch member 314 at one end and is affixed to a pin or rod member 328 at the other as by an end loop 330 .
- the tension spring 324 spans a linear operator, preferably a hydraulic cylinder 332 which is a single-acting cylinder having a blind end fluid inlet and outlet port at 334 .
- the cylinder 332 is mounted as by bolts, one of which is shown at 336 to the shaped members 308 with the rod end of the cylinder addressing the tail portion 322 of the shaped latch member 314 in a manner such that when the cylinder is fully collapsed, the system will reside in the position shown in FIG. 5 with the latch hook in the latched or “down” position capturing the pin member 226 in the curved hook 318 .
- Extension of the cylinder rod associated with the cylinder 332 pushes on the tail section 322 of the latch member 314 overcoming the tension of spring 324 thereby raising the hook assembly relative to the pin 226 to release the tag wheel assembly for deployment.
- the rod member 328 is affixed to the blind end of cylinder 332 as by welding at 338 .
- the latch system presents a unitary structure which, as shown better in FIG. 6, can simply be bolted over an opening 400 in steel plate 402 utilized to support the rear end of the cement mixing drum 404 in a manner in which only the hook end of the latch 314 protrudes through the slot 306 .
- the modular system mounts on four bolts as at 406 through generally horizontally slotted openings as at 408 in a manner which combines with the generally vertically slotted openings 304 in the plates 302 of the modular system to provide hook location adjustment in both vertical and horizontal directions so that adjustment of the exact location of the hook is quite simple. Note that replacement of the modular system also only involves the removal of the four bolts 406 and there is no need to replace individually located separate parts as in older systems.
- the biasing spring 334 will assure that the latch hook member 314 remains in the “down” position and the pin 226 remains captured.
- the shape of the internal cavity of the hook 318 is such that while the pin 226 is captured by the end lip 319 , movement of the pin into the hook or the hook away from the pin will allow engagement or disengagement as desired, being realized that the pin moves in a wider arc along with the pivoting of the tag axle system.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
Abstract
Description
- I. Field of the Invention
- The present invention relates generally to auxiliary axle systems for load-hauling vehicles and, more particularly, to a stowable tag axle system that includes a safety latch which positively latches the axle in the stowed position when the axle is retracted or disabled for repairs. The invention provides an improved latching system for securing the tag axle which has a compact and unitary construction which readily installs on a truck body, is easily positionally adjusted and in which the mechanism is shielded from clogging debris and corrosive materials in the case of a transit mixer application.
- II. Related Art
- Optionally deployable auxiliary axle systems are well known and often associated with a variety of types of load-hauling vehicles, particularly those accustomed to time-varying loading, such as dump trucks, refuse collection vehicles and transit concrete mixers. Such vehicles typically include a chassis or frame, a cab and a dedicated truck body mounted on the chassis behind the cab. Such vehicles also include a forward steering axle placed near the front of the cab and one or more sets of drive axles spaced behind the steering axle, the drive axles often being provided in a dual axle arrangement. The auxiliary axle systems furnish additional load carrying capacity by adding an axle for assisting the steering and drive axles in supporting the load and in adjusting the inter-axle distance or increasing the overall front-to-rear axle span distance for the vehicle. In this manner, not only does the tag axle system assist in balancing the load carried by, for example, a transit mixing cement truck, but generally it also enables the truck to carry a higher legal total payload than would otherwise be permitted because weight restrictions placed on vehicles traveling over highways are typically measured in terms of load per axle in combination with overall spacing between the vehicle axles.
- Examples of such auxiliary axle assemblies that can be selectively engaged with the ground are shown, for example, in U.S. Pat. Nos. 5,897,123 and 5,018,755. Thus, it is known to have tag axle systems generally consisting of a rear tubular cross member carrying spaced wheel assemblies and carried by a pair of spaced tag axle arms which, in turn, are pivotally mounted to the rear portion of a truck chassis according to a generally known arrangement. Linear reciprocating operating devices, typically hydraulic cylinders, or pneumatic devices are employed to pivot the tag axle system between a raised or stowed position and a lowered or ground-engaging position.
- To assure that the tag axle assembly will remain in the elevated or stowed position until it is intentionally lowered to the ground-engaging position, it is known to add some type of external latching mechanism such as that which is shown in FIG. 1 which illustrates a fragmentary side elevational view of a transit mixer with a tag axle assembly in its raised or stowed position. The view includes a portion of a
vehicle frame 12, dualaxle drive wheels 14, a mixing drum 16 partially supported by a rear mixing drum mount support frame 18 and a tag axle assembly which includes a pair ofarms 20 pivotally mounted at one of their ends to the frame to the vehicle. A tag axle 22 carrying atag wheel 24 is mounted to the opposite end of eacharm 20. A common torque tube is shown at 26 and a shaped cam plate at 28 which cooperates with acam follower wheel 30. Retraction air actuators are shown at 32 with associatedarms 34. A further cam link assembly is provided which includes a pair of cam link arms, one of which is shown at 40 mounted from apivot 42 and a pair of deployment air springs, one of which is shown at 44 which is affixed to the support frame 18 of the mixing drum using suitable means and to thecam link arms 40. - When the
retraction actuators 32 are inflated, thearms 34 pull on thepivot members 36 connected to the torquetube cross member 26 to cause thetag wheels 24 to elevate to a retracted or stowed position. Conversely, deflation of theair actuators 32 and inflation of the deployment air springs 44 produces a downward force on thecam link arm 40 which is transferred to thearm roller 30 and then through thecam plate 28 of the tag assembly thereby lowering thetag axle wheels 24. - As previously indicated, to retain the tag axle assembly in the elevated position, there is further provided an external latching mechanism which includes a
hook 50 pivotally mounted at one end to the mixing drum mount 18 and situated so that it can engage apin 52 attached to thearm 20 of the tag axle assembly at an appropriate location. The hook is further provided with a biasing spring 53 and a pneumatic hook actuator at 54. Inflation of the actuator 54 overcomes the biasing of the spring 53 thereby releasing thepin 52 from the grasp of thehook 50. Otherwise, the biasing spring provides sufficient force to retain thepin 52 in thehook 50. - While this and other similar external hook arrangements have been known to function adequately, they consist of a number of parts which must be separately positioned relative to each other and aligned with the tag axle pin and the parts are exposed to mixing drum contents, acid washes and other hazards associated with the mixing and dispensing and cleanup of transit-mixed concrete. Accordingly, the parts readily become clogged with debris inhibiting operation of the spring and the pivoting of the hook to the point where operation of the
hook 50 is impaired, thereby impairing the positive latching of the stowed tag axle system. In addition, corrosion of the separately attached parts leads to frequent difficult removal and replacement. - Accordingly, there remains a need for a compact and efficient safety latch system for tag axles which is easily removed and replaced as a unit and which does not have its integral operating parts exposed to the materials and cleaning agents associated with transit concrete mixing or other materials.
- Accordingly, it is a primary object of the present invention to provide a compact modular safety latch for tag axles which is easily removed and replaced as an independent unit.
- It is a further object of the present invention to provide a safety latch for tag axles associated with load hauling vehicles such as transit concrete mixers which has its moving parts shielded from contact with mixed cement, mixing materials and wash materials.
- Other objects and advantages associated with the present invention will become apparent to those skilled in the art upon further familiarization with the specification, drawings and claims contained in this application.
- The present invention provides a compact modular safety latch assembly for retaining an associated pivoting tag axle assembly in a stowed position when not in use and when the system must be retained in an elevated position with the vehicle shut off as for the performance of maintenance on the vehicle. The system employs a cylinder-operated, spring-biased pivoting hook arrangement assembled as a modular unit or a base plate for attachment to and behind the rear mixing drum mount support metal structure of a transit mixer or the like so that only the catch portion of the hook member protrudes through a slot in the support plate of the drum support structure. The modular safety latch system may be mounted through slotted openings in the plate of the vehicle which cooperate with slotted openings in the base or support plate directed in the opposite direction so that both vertical and horizontal adjustment is provided in the system for easy mounting and final alignment adjustment of the relative location of the latch hook so that the retention pin attached to the tag axle swing frame can be captured as desired. In this manner, the moving parts of the system are all located behind the metal support plate and are less likely to encounter clogging and corrosive materials in use.
- The detailed embodiment of the modular safety latch itself includes a base plate carrying a pair of shaped, spaced parallel flange members fixed to it and which, in turn, carry the latch hook pivotally journaled on a pivot pin spanning and mounted in the flanges. The latch hook is a member of dedicated shape having a top or forward curved hook section above the pivot and a lower or rearward tail section below the pivot and a fluid cylinder is provided which is bolted to the flanges in a manner such that extension of the rod associated with the cylinder overcomes spring biasing (below) pushes on the tail of the latch hook and pivots the latch hook away from and releases the latch pin (as the system is mounted on the vehicle). A counter-biasing tension spring extends between the latch hook and a member attached to the rear of the latch-operating cylinder to pivot and hold the latch against the cylinder rod and in a fully lowered or latched position when the operating rod is retracted or collapsed into the cylinder.
- In operation, the operating cylinder is a normally retracted or collapsed and assumes this position when the fluid (hydraulic or pneumatic) pressure is lost in the cylinder. In this position, the biasing spring pivots the latch fully downward, placing it in the pin-capture position so that a stowed tag axle system will remain engaged by the latch hook until positive pressure operates the cylinder to extend the rod and overcome the spring tension thereby pivoting and raising the latch hook to release the pin.
- In this manner, a relatively fool-proof latch system is provided in which the mechanism is substantially protected from the clogging and corrosion associated with past systems. In addition, the invention provides a modular unit which is readily installed, adjusted and replaced as necessary during the life of the vehicle.
- In the drawings, wherein like numerals are utilized to designate like parts throughout the same:
- FIG. 1 is a fragmentary side view showing a tag axle assembly in the raised position and utilizing a latch in accordance with the prior art;
- FIG. 2 is a side view of a transit concrete mixing work vehicle having an auxiliary axle of a class suitable for use with the latch of the present invention shown in the deployed position;
- FIG. 3 depicts a side view of the auxiliary axle assembly depicted in FIG. 2;
- FIG. 4 is a top view of the auxiliary axle assembly of FIG. 3;
- FIG. 5 is a perspective view of a modular tag axle latching system assembly constructed in accordance with the invention; and
- FIG. 6 is a fragmentary perspective view from the outside showing the modular latch of the invention installed through the plate metal of a transit mixer rear drum support structure.
- In accordance with the detailed description of the present invention, the particular embodiment illustrated and described is meant to be illustrative of the invention rather than limiting in any manner and it is believed that other structures may occur to those skilled in the art which remain well within the confines of the inventive concept. Also, the modular latch system of the invention may be used with other types of load hauling or work vehicles using tag axles which operate in the same or a similar manner.
- FIG. 2 shows a transit
concrete mixing truck 100 having acab 102 and adrum 104 mounted behind the cab for receiving materials through ahopper 106, internally mixing concrete and dispensing same through the rear of thedrum 104. The vehicle includes achassis 108 on which the drum and the cab are mounted and which is provided with a steering axle 110 and a dual axle drive wheel arrangement 112. The chassis further includes a pair of spaced parallel chassis members, one of which is shown at 114, which extend along the length ofwork vehicle 100 and from which an auxiliary axle, generally 200, is pivotally mounted, as shown in more detail in FIGS. 3 and 4. - In FIGS. 3 and 4, the
auxiliary axle assembly 200 includes an arm assembly, generally at 210, a rear assembly, generally at 230, and an actuator assembly, generally at 250. Thearm assembly 210 includes a pair of spaced rearward extendingarms 212 and between which anauxiliary axle 213 is mounted at the rear-most end ofarms 212. A tie rod may be provided as at 214. Thearms 212 which are substantially parallel and the front-most end ofarms 212 is pivotally mounted to chassis members 130 by therear assembly 230, as will be described. Thearms 212 are joined by acommon torque tube 216 and a lever arm shown at 218 is affixed to and extends upward from thetube 216 and supports a spaced pillow block mounting arrangement as at 220 are affixed thereto and secure a mounting pin or shaft as at 222. A fender is shown at 224. - The
rear assembly 230 further includes a pair ofpivot block brackets 232 affixed as by welding tochassis elements 114. A pair of pivot shafts orpins 234 are mounted in a pair of pivot blocks 236 and eacharm 212 is pivotally mounted aboutpivot shaft 234.Actuator assembly 250 includes a double-actinghydraulic cylinder actuator 252 which includes arod 254 mounted in pivoted relation to theblocks 220 as by shaft orpin 222. The blind end ofcylinder 252 is also pivotally mounted as at 254 by a clevis arrangement including mountingblocks 256 mounted in acylinder cross member 258. - It will be appreciated that collapse or retraction of the
rod 254 will pivot the tag axle system 200 (arms 212) about theshafts 234 thereby raising the tag axle to the stowed position and, conversely, extension of therod 254 incylinder 252 will deploy the tag axle system as shown in FIG. 3. - It should be noted that the location of a retention pin is indicated by226. This pin is normally mounted on the inside of either of the
arms 212 and is used in conjunction with the modular latch arrangement of the invention to retain the tag wheels in the raised or stowed position as desired. - The latch mechanism itself is shown in the greatly enlarged perspective view of FIG. 5. The modular latch system, generally300, includes a base or mounting
plate 302 having a plurality of slotted mountingholes 304 and in an elongatedcentral slot 306. A pair of spaced parallel shaped mountingflange members 308 are affixed to thebase plate 302 and are provided with openings 310 which, in turn, carry a common mounting shaft or pin 312 on which alatch member 314 is mounted to pivot or rotate. Thelatch member 314 includes ahook arrangement 316 preferably having a particularinternal curvature 318 adapted to releasably grab apin member 226 affixed to anarm 212 of a pivoting tag axle arrangement. Bushings are provided at the pivot joint of the latch at 320. The shapedlatch hook member 314 further includes atail section 322 and atension spring 324 attached thereto as by abolt member 326 which threadably engages thetail portion 322 of thelatch member 314 at one end and is affixed to a pin orrod member 328 at the other as by anend loop 330. Thetension spring 324 spans a linear operator, preferably a hydraulic cylinder 332 which is a single-acting cylinder having a blind end fluid inlet and outlet port at 334. The cylinder 332 is mounted as by bolts, one of which is shown at 336 to the shapedmembers 308 with the rod end of the cylinder addressing thetail portion 322 of the shapedlatch member 314 in a manner such that when the cylinder is fully collapsed, the system will reside in the position shown in FIG. 5 with the latch hook in the latched or “down” position capturing thepin member 226 in thecurved hook 318. Extension of the cylinder rod associated with the cylinder 332 pushes on thetail section 322 of thelatch member 314 overcoming the tension ofspring 324 thereby raising the hook assembly relative to thepin 226 to release the tag wheel assembly for deployment. Therod member 328 is affixed to the blind end of cylinder 332 as by welding at 338. - Once assembled, the latch system presents a unitary structure which, as shown better in FIG. 6, can simply be bolted over an
opening 400 in steel plate 402 utilized to support the rear end of the cement mixing drum 404 in a manner in which only the hook end of thelatch 314 protrudes through theslot 306. The modular system mounts on four bolts as at 406 through generally horizontally slotted openings as at 408 in a manner which combines with the generally vertically slottedopenings 304 in theplates 302 of the modular system to provide hook location adjustment in both vertical and horizontal directions so that adjustment of the exact location of the hook is quite simple. Note that replacement of the modular system also only involves the removal of the fourbolts 406 and there is no need to replace individually located separate parts as in older systems. In addition, should hydraulic or pneumatic pressure be lost in the cylinder 332, the biasingspring 334 will assure that thelatch hook member 314 remains in the “down” position and thepin 226 remains captured. The shape of the internal cavity of thehook 318 is such that while thepin 226 is captured by theend lip 319, movement of the pin into the hook or the hook away from the pin will allow engagement or disengagement as desired, being realized that the pin moves in a wider arc along with the pivoting of the tag axle system. - This invention has been described herein in considerable detail in order to comply with the patent statutes and to provide those skilled in the art with the information needed to apply the novel principles and to construct and use embodiments of the example as required. However, it is to be understood that the invention can be carried out by specifically different devices and that various modifications can be accomplished without departing from the scope of the invention itself.
- What is claimed is:
Claims (6)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/507,606 US6371499B1 (en) | 2000-02-21 | 2000-02-21 | Latch assembly arrangement for tag axle |
PE2000001208A PE20020032A1 (en) | 2000-02-21 | 2000-11-13 | RETENTION MOUNTING ARRANGEMENT FOR TAIL AXLE |
AU2001234396A AU2001234396A1 (en) | 2000-02-21 | 2000-11-16 | Latch assembly arrangement for tag axle |
CA002400658A CA2400658C (en) | 2000-02-21 | 2000-11-16 | Latch assembly arrangement for tag axle |
ARP000106052A AR026501A1 (en) | 2000-02-21 | 2000-11-16 | SECURITY CLOSURE PROVISION TO IMMOBILIZE A VEHICLE AUXILIARY AXLE IN A HIGH POSITION |
PCT/US2000/042215 WO2001062544A1 (en) | 2000-02-21 | 2000-11-16 | Latch assembly arrangement for tag axle |
MXPA01001190A MXPA01001190A (en) | 2000-02-21 | 2001-01-31 | Latch assembly arrangement for tag axle. |
CO01013005A CO5290269A1 (en) | 2000-02-21 | 2001-02-19 | RETAINING ASSEMBLY PROVISION FOR TAIL AXLE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/507,606 US6371499B1 (en) | 2000-02-21 | 2000-02-21 | Latch assembly arrangement for tag axle |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020033585A1 true US20020033585A1 (en) | 2002-03-21 |
US6371499B1 US6371499B1 (en) | 2002-04-16 |
Family
ID=24019329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/507,606 Expired - Lifetime US6371499B1 (en) | 2000-02-21 | 2000-02-21 | Latch assembly arrangement for tag axle |
Country Status (8)
Country | Link |
---|---|
US (1) | US6371499B1 (en) |
AR (1) | AR026501A1 (en) |
AU (1) | AU2001234396A1 (en) |
CA (1) | CA2400658C (en) |
CO (1) | CO5290269A1 (en) |
MX (1) | MXPA01001190A (en) |
PE (1) | PE20020032A1 (en) |
WO (1) | WO2001062544A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050151337A1 (en) * | 2004-01-14 | 2005-07-14 | Chalin Thomas N. | Steerable and liftable independent suspension system |
US20070126196A1 (en) * | 2005-06-29 | 2007-06-07 | Klahn Kenneth F | Third axle assembly for log hauling trailers |
US20150083504A1 (en) * | 2012-05-31 | 2015-03-26 | Ponsse Oyj | Arrangement in a Forestry Machine and a Forestry Machine Equipped with a Corresponding Arrangement |
US20150321513A1 (en) * | 2014-05-08 | 2015-11-12 | Daimler Ag | Torque Rod Bracket for Mounting a Torque Rod on a Housing of a Tag Axle |
US9718507B2 (en) * | 2015-10-29 | 2017-08-01 | Cnh Industrial America Llc | Method of steering a weight transfer axle on a combine |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6416136B1 (en) * | 2000-02-23 | 2002-07-09 | Fred P. Smith | Lightweight, adjustable-height, axle |
DE10112084A1 (en) * | 2001-03-12 | 2002-09-19 | Putzmeister Ag | Mobile thick matter pump with support structure and air-sprung wheel axle |
US8177243B2 (en) | 2002-07-12 | 2012-05-15 | Starcon International, Inc. | Load-transferring trailer assembly attachable to a load-bearing vehicle |
US7175189B1 (en) * | 2004-03-15 | 2007-02-13 | Schwing America, Inc. | Booster axle pivot mount |
US9209956B2 (en) | 2005-08-22 | 2015-12-08 | Qualcomm Incorporated | Segment sensitive scheduling |
US7963535B2 (en) * | 2008-07-25 | 2011-06-21 | Con-Tech Manufacturing, Inc. | Tag axle pivot mount |
TWM404794U (en) * | 2010-09-15 | 2011-06-01 | Chuan Ta Entpr Co Ltd | Improved wheel raising and lowering structure for loading vehicle (I) |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4061361A (en) | 1976-04-14 | 1977-12-06 | Felburn J Phil | Vehicle suspensions |
CA1090175A (en) | 1978-03-31 | 1980-11-25 | William E. Cribb | Bulk explosives mixing and delivery apparatus |
US4314709A (en) | 1980-08-04 | 1982-02-09 | Silbernagel Frederick J | Load transfer trailer for transit mixer |
US4501437A (en) | 1983-04-21 | 1985-02-26 | Dorso Trailer Sales, Inc. | Load transfer axle assembly |
DE3407526A1 (en) * | 1984-03-01 | 1985-09-05 | Bergische Stahl-Industrie, 5630 Remscheid | AUTOMATIC SHUTTER COUPLING WITH DOME PLIERS |
FR2593460B1 (en) * | 1986-01-27 | 1988-03-25 | Prefabrication Elect Ste Indle | LOCKING DEVICE IN THE ROAD POSITION OF A RETRACTABLE AXLE OF A ROAD VEHICLE. |
US5018755A (en) | 1990-01-24 | 1991-05-28 | Mcneilus Truck And Manufacturing, Inc. | Tag axle for work vehicles |
DK170425B1 (en) * | 1993-04-26 | 1995-08-28 | Dam Rasmussen Kaj | Excavator or loading machine tool holder |
US5868078A (en) | 1995-07-21 | 1999-02-09 | Harsco Technologies Corporation | Road and rail vehicle using rail wheel drive and apparatus |
US5897123A (en) | 1997-09-05 | 1999-04-27 | Oshkosh Truck Corporation | Tag axle pivot |
-
2000
- 2000-02-21 US US09/507,606 patent/US6371499B1/en not_active Expired - Lifetime
- 2000-11-13 PE PE2000001208A patent/PE20020032A1/en not_active Application Discontinuation
- 2000-11-16 AU AU2001234396A patent/AU2001234396A1/en not_active Abandoned
- 2000-11-16 CA CA002400658A patent/CA2400658C/en not_active Expired - Lifetime
- 2000-11-16 WO PCT/US2000/042215 patent/WO2001062544A1/en active Application Filing
- 2000-11-16 AR ARP000106052A patent/AR026501A1/en active IP Right Grant
-
2001
- 2001-01-31 MX MXPA01001190A patent/MXPA01001190A/en active IP Right Grant
- 2001-02-19 CO CO01013005A patent/CO5290269A1/en not_active Application Discontinuation
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7980571B2 (en) | 2004-01-14 | 2011-07-19 | Watson & Chalin Manufacturing, Inc. | Steerable and liftable independent suspension system |
US7152866B2 (en) | 2004-01-14 | 2006-12-26 | Watson & Chalin Manufacturing, Inc. | Steerable and liftable independent suspension system |
US20070040343A1 (en) * | 2004-01-14 | 2007-02-22 | Chalin Thomas N | Steerable and Liftable Independent Suspension System |
US20050151337A1 (en) * | 2004-01-14 | 2005-07-14 | Chalin Thomas N. | Steerable and liftable independent suspension system |
US7322587B2 (en) | 2004-01-14 | 2008-01-29 | Watson & Chalin Manufacturing, Inc. | Steerable and liftable independent suspension system |
US20080067773A1 (en) * | 2004-01-14 | 2008-03-20 | Watson & Chalin Manufacturing Inc. | Steerable and liftable independent suspension system |
US7845658B2 (en) | 2004-01-14 | 2010-12-07 | Watson & Chalin Maufacturing, Inc. | Steerable and liftable independent suspension system |
US20110057406A1 (en) * | 2004-01-14 | 2011-03-10 | Watson & Chalin Manufacturing, Inc. | Steerable and liftable independent suspension system |
US20070126196A1 (en) * | 2005-06-29 | 2007-06-07 | Klahn Kenneth F | Third axle assembly for log hauling trailers |
US20150083504A1 (en) * | 2012-05-31 | 2015-03-26 | Ponsse Oyj | Arrangement in a Forestry Machine and a Forestry Machine Equipped with a Corresponding Arrangement |
US9643670B2 (en) * | 2012-05-31 | 2017-05-09 | Ponsse Oyj | Arrangement in a forestry machine and a forestry machine equipped with a corresponding arrangement |
US20150321513A1 (en) * | 2014-05-08 | 2015-11-12 | Daimler Ag | Torque Rod Bracket for Mounting a Torque Rod on a Housing of a Tag Axle |
US9718507B2 (en) * | 2015-10-29 | 2017-08-01 | Cnh Industrial America Llc | Method of steering a weight transfer axle on a combine |
Also Published As
Publication number | Publication date |
---|---|
CA2400658A1 (en) | 2001-08-30 |
PE20020032A1 (en) | 2002-02-03 |
US6371499B1 (en) | 2002-04-16 |
AR026501A1 (en) | 2003-02-12 |
CO5290269A1 (en) | 2003-06-27 |
WO2001062544A1 (en) | 2001-08-30 |
AU2001234396A1 (en) | 2001-09-03 |
MXPA01001190A (en) | 2002-08-20 |
CA2400658C (en) | 2006-08-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6371499B1 (en) | Latch assembly arrangement for tag axle | |
CA2880484C (en) | Vertical tank transport systems and related methods | |
US4063779A (en) | Dump truck load transfer device | |
US4762421A (en) | Tag axle assembly for work vehicles | |
US8690514B2 (en) | Heavy duty vehicle recovery system | |
US5058917A (en) | Two-stage retractable suspension | |
US4705133A (en) | Tag axle assembly for work vehicle | |
US5075988A (en) | Snowplow quick mount lift assembly | |
US20070126196A1 (en) | Third axle assembly for log hauling trailers | |
US10173621B2 (en) | Retractable under-guard for vehicles and equipment | |
US20040105739A1 (en) | Trailer-tilting, load-discharge apparatus and method | |
CA2400652C (en) | Swing-frame assembly for tag axle | |
US8066333B2 (en) | Vehicle with interchangeable truck bed | |
US5018593A (en) | High lift tag axle for trucks | |
US4245855A (en) | Vehicle stabilizer | |
US5269553A (en) | Towing apparatus and thrust reversal mechanism therefor | |
US4265463A (en) | Combination vehicle for towing, dumping and the like | |
US3420390A (en) | Transfer trailer drawbar device | |
US6217122B1 (en) | Dual use vehicle with rolling hopper and method | |
US7841604B2 (en) | Detachable trailing tag axle | |
US5215425A (en) | Tractor towing apparatus | |
US5988664A (en) | Apparatus for towing a disabled truck tractor | |
US6616243B2 (en) | Outrigger for stabilizing a dump trailer | |
US8523286B1 (en) | Method of interchanging a truck body with a dump body | |
US20010022432A1 (en) | Adjustable suspension system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BANK OF AMERICA, N.A., AS AGENT, ILLINOIS Free format text: REAFFIRMATION & AMENDMENT AGREEMENT;ASSIGNOR:MCNEILUS TRUCK AND MANUFACTURING, INC.;REEL/FRAME:011204/0911 Effective date: 20000928 |
|
AS | Assignment |
Owner name: MCNEILUS TRUCK AND MANUFACTURING, INC., MINNESOTA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KONOP, CHAD O.;REEL/FRAME:011215/0258 Effective date: 20000524 |
|
AS | Assignment |
Owner name: BANK OF AMERICA, N.A. AS AGENT., (F/N/A) BANK OF A Free format text: SECOND REAFFIRMATION AND AMENDMENT AGREEMENT;ASSIGNOR:MCNEILUS TRUCK AND MANUFACTURING INC.;REEL/FRAME:012153/0539 Effective date: 20010723 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: MCNEILUS TRUCK AND MANUFACTURING, INC., MINNESOTA Free format text: RELEASE OF SECURITY INTEREST RECORDED UNDER REEL AND FRAME 012153/0539;ASSIGNOR:BANK OF AMERICA N.A. (F/K/A BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION);REEL/FRAME:015209/0783 Effective date: 20040929 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
FPAY | Fee payment |
Year of fee payment: 12 |