阅读说明：本技术 用于分节式管道疏通机的可分离运输推车 (Separable transport cart for segmented pipeline dredging machine ) 是由 格伦·R·夏蒂埃 罗伯特·斯克扬克 斯科特·克吕普克 哈拉尔德·克罗多费尔 凯瑟琳·哈尔 于 2019-07-16 设计创作，主要内容包括：描述了被配置为运输管道疏通设备的轮式运输推车,所述管道疏通设备例如是管道疏通机和管道疏通线缆。推车包括接合装置,该接合装置使管道疏通机能够固定到推车,并且防止在使用或运输过程中与推车非预期的分离。该接合装置还使得管道疏通机能够快速且容易地与推车分离。还描述了使用推车运输此类设备的方法。此外,还描述了具有各种设备的推车系统。(Wheeled transport carts configured to transport pipe clearing devices, such as pipe clearing machines and pipe clearing cables, are described. The cart includes an engagement arrangement that enables the pipe dredger to be secured to the cart and prevents unintended separation from the cart during use or transport. The engagement means also enables the pipe opener to be quickly and easily detached from the cart. Methods of transporting such devices using the cart are also described. Further, a cart system having various devices is also described.)

1. A transport cart comprising:

a frame defining a proximal end and an opposite distal end, the frame defining a frame longitudinal axis extending between the proximal end and the distal end and including at least one wheel rotatably secured to the frame adjacent the distal end;

an engagement device secured to the frame, the engagement device comprising (i) a first member adjacent the distal end of the frame, the first member comprising a first receiving slot defining a first longitudinal axis, and (ii) a second member between the proximal end of the frame and the first member, the second member comprising a second receiving slot defining a second longitudinal axis, wherein both the first receiving slot and the second receiving slot are accessible from the proximal end of the frame.

2. The transport cart of claim 1, wherein an axis of the first receiving slot is non-parallel to an axis of the second receiving slot.

3. The transport cart of claim 1, wherein an axis of the first receiving slot is oriented parallel to a longitudinal axis of the cart.

4. The transport cart of claim 1, wherein an axis of the second receiving slot is oriented at an acute angle to a longitudinal axis of the cart.

5. The transport cart of claim 1, further comprising:

a carriage assembly secured to the frame, the carriage assembly including a carriage positionable between a storage position and a use position, wherein the at least one wheel is out of contact with an underlying surface when the frame is oriented to rest on the underlying surface and the carriage is positioned in the use position.

6. The transport cart of claim 1, further comprising:

a step support bracket secured to the frame and positioned such that the bracket extends tangential or nearly tangential to the at least one wheel.

7. The transport cart of claim 1, further comprising:

at least one handle secured to the frame adjacent the proximal end of the frame.

8. The transport cart of claim 1, further comprising:

at least one leg extending from the frame.

9. The transport cart of claim 1, further comprising:

at least one mounting arm extending from the frame.

10. The transport cart of claim 1, further comprising:

at least one floor support extending rearwardly from the frame such that when the cart is rested on a floor surface, the frame extends along a longitudinal axis that is non-parallel to the floor surface.

11. The transport cart of claim 7, wherein a longitudinal axis of the frame extends at an angle of 1 ° to 10 ° relative to a floor surface.

12. The transport cart of claim 1, wherein the engagement device is latchless.

13. A transport cart comprising:

a frame defining a proximal end and an opposite distal end, the frame defining a longitudinal axis extending between the proximal end and the distal end and including at least one wheel rotatably secured to the frame adjacent the distal end;

a carriage assembly secured to the frame, the carriage assembly including a carriage positionable between a storage position and a use position, wherein the at least one wheel is free of contact with an underlying surface when the frame is oriented to rest on the underlying surface and the carriage is positioned to the use position.

14. The transport cart of claim 13, further comprising:

an engagement device secured to the frame, the engagement device comprising (i) a first member adjacent the distal end of the frame and defining a first receiving slot having a longitudinal axis, and (ii) a second member between the proximal end of the frame and the first member, the second member defining a second receiving slot having a longitudinal axis, wherein both the first and second receiving slots are accessible from the proximal end of the frame.

15. The transport cart of claim 13, wherein an axis of the first receiving slot is non-parallel to an axis of the second receiving slot.

16. The transport cart of claim 13, wherein an axis of the first receiving slot is oriented parallel to a longitudinal axis of the cart.

17. The transport cart of claim 13, wherein an axis of the second receiving slot is oriented at an acute angle to a longitudinal axis of the cart.

18. The transport cart of claim 13, further comprising:

a step support bracket secured to the frame and positioned such that the bracket extends tangential or nearly tangential to the at least one wheel.

19. The transport cart of claim 13, further comprising:

at least one handle secured to the frame adjacent the proximal end of the frame.

20. The transport cart of claim 13, further comprising:

at least one leg extending from the frame.

21. The transport cart of claim 13, further comprising:

at least one mounting arm extending from the frame.

22. The transport cart of claim 13, further comprising:

at least one floor support extending rearwardly from the frame such that when the cart is rested on a floor surface, the frame extends along a longitudinal axis that is non-parallel to the floor surface.

23. The transport cart of claim 22, wherein a longitudinal axis of the frame extends at an angle of 1 ° to 10 ° relative to a floor surface.

24. The transport cart of claim 11, wherein the engagement device is latch-free.

25. A transport cart comprising:

a frame defining a proximal end and an opposite distal end, the frame defining a longitudinal axis extending between the proximal end and the distal end and including at least one wheel rotatably secured to the frame adjacent the distal end;

a step support bracket secured to the frame and positioned such that the bracket extends tangential or nearly tangential to the at least one wheel.

26. The transport cart of claim 25, further comprising:

an engagement device secured to the frame includes (i) a first member adjacent the distal end of the frame and defining a first receiving slot having a longitudinal axis, and (ii) a second member between the proximal end of the frame and the first member, the second member defining a second receiving slot having a longitudinal axis, wherein both the first and second receiving slots are accessible from the proximal end of the frame.

27. The transport cart of claim 25, wherein an axis of the first receiving slot is non-parallel to an axis of the second receiving slot.

28. The transport cart of claim 25, wherein an axis of the first receiving slot is oriented parallel to a longitudinal axis of the cart.

29. The transport cart of claim 25, wherein an axis of the second receiving slot is oriented at an acute angle to a longitudinal axis of the cart.

30. The transport cart of claim 25, further comprising:

a carriage assembly secured to the frame, the carriage assembly including a carriage positionable between a storage position and a use position, wherein the at least one wheel is out of contact with an underlying surface when the frame is oriented to rest on the underlying surface and the carriage is positioned in the use position.

31. The transport cart of claim 25, further comprising:

at least one handle secured to the frame adjacent the proximal end of the frame.

32. The transport cart of claim 25, further comprising:

at least one leg extending from the frame.

33. The transport cart of claim 25, further comprising:

at least one mounting arm extending from the frame.

34. The transport cart of claim 25, further comprising:

at least one floor support extending rearwardly from the frame such that when the cart is rested on a floor surface, the frame extends along a longitudinal axis that is non-parallel to the floor surface.

35. The transport cart of claim 34, wherein a longitudinal axis of the frame extends at an angle of 1 ° to 10 ° relative to a floor surface.

36. The transport cart of claim 26, wherein the engagement device is latchless.

37. A method of transporting a pipe opener, the method comprising:

providing a transport cart comprising (a) a frame defining a proximal end and an opposite distal end, the frame defining a longitudinal axis extending between the proximal end and the distal end, and including at least one wheel rotatably secured to the frame adjacent the distal end, and (b) an engagement device secured to the frame, the engagement device including (i) a first member adjacent the distal end of the frame and defining a first receiving slot having a longitudinal axis, and (ii) a second member between the proximal end of the frame and the first member, the second member defining a second receiving slot having a longitudinal axis, wherein both the first receiving slot and the second receiving slot are accessible from the proximal end of the frame;

aligning a first portion of a frame of a pipe opener with a first receiving groove;

aligning a second portion of the frame of the pipe opener with the second receiving groove;

the pipe opener is moved relative to the cart so that the frame of the pipe opener is positioned in both the first and second receiving slots.

38. The method of claim 37, wherein the moving operation positions the frame of the pipe opener into both the first receiving slot and the second receiving slot simultaneously.

39. A system, comprising:

a pipe dredger; and

a transport cart, comprising: a frame defining a proximal end and an opposite distal end, the frame defining a longitudinal axis extending between the proximal end and the distal end and including at least one wheel rotatably secured to the frame adjacent the distal end; and an engagement device secured to the frame, the engagement device including (i) a first member adjacent the distal end of the frame and defining a first receiving slot having a longitudinal axis, and (ii) a second member between the proximal end of the frame and the first member, the second member defining a second receiving slot having a longitudinal axis, wherein both the first and second receiving slots are accessible from the proximal end of the frame.

40. The system of claim 39, wherein an axis of the first receiving groove is non-parallel to an axis of the second receiving groove.

41. The system of claim 39, wherein an axis of the first receiving slot is oriented parallel to a longitudinal axis of the cart.

42. The system of claim 39, wherein an axis of the second receiving slot is oriented at an acute angle to a longitudinal axis of the cart.

43. The system of claim 39, wherein the pipe opener comprises a first retention member and a second retention member, the pipe opener engageable to a transport cart by positioning the first retention member in the first receiving slot and the second retention member in the second receiving slot.

44. A system, comprising:

a pipe dredger; and

a transport cart, comprising: a frame defining a proximal end and an opposite distal end, the frame defining a longitudinal axis extending between the proximal end and the distal end and including at least one wheel rotatably secured to the frame adjacent the distal end; and a carriage assembly secured to the frame, the carriage assembly including a carriage positionable between a storage position and a use position, wherein the at least one wheel is free of contact with an underlying surface when the frame is oriented to rest on the underlying surface and the carriage is positioned to the use position.

45. The system of claim 44, wherein the pipe opener comprises a first retaining component and a second retaining component, the transport cart further comprising an engagement device comprising a first member defining a first receiving slot and a second member defining a second receiving slot, the pipe opener being engageable to the transport cart by positioning the first retaining component in the first receiving slot and the second retaining component in the second receiving slot.

46. A system, comprising:

a pipe dredger; and

a transport cart, the transport cart comprising: a frame defining a proximal end and an opposite distal end, the frame defining a longitudinal axis extending between the proximal end and the distal end and including at least one wheel rotatably secured to the frame adjacent the distal end; and a step support bracket fixed to the frame and positioned such that the bracket extends tangential or nearly tangential to the at least one wheel.

47. The system of claim 46, wherein the pipe opener comprises a first retaining component and a second retaining component, the transport cart further comprising an engagement device comprising a first member defining a first receiving slot and a second member defining a second receiving slot, the pipe opener engageable to the transport cart by positioning the first retaining component in the first receiving slot and the second retaining component in the second receiving slot.

Technical Field

The present subject matter relates to transport carts for pipeline pull throughs and, in particular, to transport carts that can be selectively and releasably engaged with pipeline pull throughs for safe and simple transport to and from a job site. The present subject matter also relates to systems and related methods of using the cart.

Background

In the pipe clearing market, some end users prefer to push the pipe clearing wheel to the pipe to be cleaned to reduce manual work otherwise associated with lifting or carrying the unit. In many applications, a pipe clearing professional prefers to operate the pipe clearing machine while it is resting on the transport cart. However, some job sites do not provide the space required for the wheeled transporter frame.

Accordingly, there is a need for a transport cart that can quickly and easily engage, transport on, and optionally disengage a pipe chase and/or associated equipment from the cart. There is also a need for a transport cart configured to enable use of a pipe clearing machine when engaged with the cart.

Disclosure of Invention

The difficulties and disadvantages associated with previous approaches are addressed in the present subject matter as follows.

In one aspect, the present subject matter provides a transport cart including a frame defining a proximal end and an opposite distal end. The frame defines a frame longitudinal axis extending between a proximal end and a distal end. The frame includes at least one wheel adjacent the distal end and rotatably secured to the frame. The transport trolley further comprises engagement means fixed to the frame. The engagement device includes (i) a first member adjacent the distal end of the frame, the first member including a first receiving slot defining a first longitudinal axis, and (ii) a second member between the proximal end of the frame and the first member. The second member includes a second receiving slot defining a second longitudinal axis, wherein both the first receiving slot and the second receiving slot are accessible from the proximal end of the frame.

In another aspect, the present subject matter provides a transport cart including a frame defining a proximal end and an opposite distal end. The frame defines a longitudinal axis extending between a proximal end and a distal end. The frame includes at least one wheel rotatably secured to the frame adjacent the distal end. The transport cart also includes a rack assembly secured to the frame. The stand assembly includes a stand positionable between a storage position and a use position. The at least one wheel is non-contacting the underlying surface when the frame is oriented to rest on the underlying surface and the stand is positioned in the use position.

In yet another aspect, the present subject matter provides a transport cart that includes a frame defining a proximal end and an opposite distal end. The frame defines a longitudinal axis extending between a proximal end and a distal end. The frame includes at least one wheel rotatably secured to the frame adjacent the distal end. The transport cart further comprises a step support bracket fixed to the frame and positioned such that the bracket extends tangential or nearly tangential to the at least one wheel.

In yet another aspect, the present subject matter provides a method of transporting a pipe opener. The method includes providing a transport cart that includes (a) a frame defining a proximal end and an opposing distal end, the frame defining a longitudinal axis extending between the proximal end and the distal end, the frame including at least one wheel rotatably secured to the frame adjacent the distal end, and (b) an engagement device secured to the frame. The engagement device includes (i) a first member adjacent the distal end of the frame and defining a first receiving slot having a longitudinal axis, and (ii) a second member between the proximal end of the frame and the first member. The second member defines a second receiving slot having a longitudinal axis, wherein both the first receiving slot and the second receiving slot are accessible from the proximal end of the frame. The method also includes aligning the first portion of the pipe pig frame with the first receiving groove. The method also includes aligning a second portion of the pipe pig frame with the second receiving groove. The method also includes moving the pipe opener relative to the cart such that the frame of the pipe opener is positioned in the first receiving slot and the second receiving slot.

In yet another aspect, the present subject matter provides a system including a pipe opener and a transport cart including a frame defining a proximal end and an opposite distal end. The frame defines a longitudinal axis extending between a proximal end and a distal end, and includes at least one wheel rotatably secured to the frame adjacent the distal end, and an engagement device secured to the frame. The engagement device includes (i) a first member adjacent the distal end of the frame and defining a first receiving slot having a longitudinal axis, and (ii) a second member between the proximal end of the frame and the first member. The second member defines a second receiving slot having a longitudinal axis, wherein both the first receiving slot and the second receiving slot are accessible from the proximal end of the frame.

In another aspect, the present subject matter provides a system including a pipe opener and a transport cart including a frame defining a proximal end and an opposite distal end. The frame defines a longitudinal axis extending between a proximal end and a distal end. The frame includes at least one wheel rotatably secured to the frame adjacent the distal end, and a bracket assembly secured to the frame. The carriage assembly includes a carriage positionable between a storage position and a use position, wherein the at least one wheel is out of contact with an underlying surface when the frame is oriented to rest on the underlying surface and the carriage is positioned in the use position.

In yet another aspect, the present subject matter provides a system including a pipe dredger and a transport cart. The transport cart includes a frame defining a proximal end and an opposite distal end. The frame defines a longitudinal axis extending between a proximal end and a distal end. The frame includes at least one wheel rotatably secured to the frame adjacent the distal end. The transport cart further comprises a step support bracket fixed to the frame and positioned such that the bracket extends tangentially or nearly tangentially to the at least one wheel.

As will be realized, the subject matter described herein is capable of other and different embodiments, and its several details are capable of modification in various other respects, all without departing from the claimed subject matter. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

Drawings

Fig. 1 is a front perspective view of an embodiment of a transport cart according to the present subject matter.

Fig. 2 is a side view of a portion of the transport cart of fig. 1.

Fig. 2A is another side view of a portion of the transport cart of fig. 1.

Fig. 3 and 4 are front perspective views of a transport cart carrying various pipe clearing devices, with the transport cart in a transport position.

Fig. 5 shows a side view of the transport cart with an alternative support in the use position.

Fig. 6 illustrates the cart of fig. 5 in a transport position.

Fig. 7 shows a side view of a transport cart with an optional step support bracket.

Fig. 8 is a side view illustrating another feature of the transport cart.

Fig. 9 is an exploded assembly schematic view of another embodiment of a transport cart in a first configuration according to the present subject matter.

Fig. 10 is an exploded assembly schematic view of the transport cart of fig. 9 in a second configuration according to the present subject matter.

Fig. 11 further illustrates another embodiment of a transport cart according to the present subject matter.

Fig. 12 illustrates the transport cart of fig. 11 supported and engaged with a pipe opener according to the present subject matter.

Fig. 13 and 14 illustrate a transport cart that utilizes an alternative assembly to engage it with a pipe opener.

Fig. 15 schematically illustrates the engagement of the pipe opener with the transport cart of fig. 1.

Detailed Description

The present subject matter enables simple and convenient transport of a pipe dredger and a pipe dredging device (e.g. a pipe dredging cable) to and/or from a work site. This reduces the number of strokes required by the end user in setting up the pipe clearing operation. By allowing the transport of cables or machine related equipment in a single wheeled trip, the setup time at the work site is greatly reduced. Furthermore, the ability to quickly attach or remove the machine to or from the wheeled transport cart facilitates more flexibility and effectiveness for the end user to detach the pipe groomer from the cart or reconnect it while in transit when needed.

The present subject matter provides a transport cart that addresses various problems and difficulties associated with currently known carts and wheeled pipe drains. Referring to fig. 1, an embodiment of a transport cart 10 according to the present subject matter is shown. The transport cart 10 includes a frame 20 defining a proximal end 22 and an opposite distal end 24. The stroller 10 further includes at least two wheels 30 adjacent the distal end 24 of the frame 20 and rotatably secured to the frame 20. Although the carts described herein use a total of two wheels, the present subject matter includes the use of more than two wheels, such as three, four, or more wheels. It is also contemplated that the cart may use one wheel. The cart 10 also typically includes one or more handles 40 secured to the frame 20. The handle can be used in a number of different configurations and positions. In the embodiment shown in fig. 1, the handle 40 is secured near the proximal end 22 of the frame 20 and extends laterally outward from the frame 20.

The present subject matter provides an engagement device on a cart that allows a pipe mover to be mounted in place on the cart and held in place by the configuration and profile of the engagement device. The coupling device requires manual work to separate the pipe opener from the cart; but prevents unintended separation during use or transportation. In one embodiment, the engagement means comprises a particular slot geometry oriented linearly aligned with the front of the cart. The engagement means also includes a specific slot geometry of angular orientation at the rear of the cart. This change in profile between the front and rear enhances end user ease of use by requiring specific positioning of the tunnel opener at only one end of the cart and allowing the tunnel opener to be placed less restrictively at the opposite end of the cart. Fig. 1 and 2 depict examples of engagement devices that include geometries that effectively hold a pipe opener in place during loading, unloading, transportation, and use.

With further reference to fig. 1 and 2, in the depicted cart 10, the engagement means includes one or more first engagement members 50 adjacent the distal end 24 of the frame 20. Generally, the cart 10 uses a pair of first engagement members 50 (see fig. 1). Each first engagement member 50 (fig. 1) includes a first receiving slot 52 (fig. 2) defining a longitudinal axis K that is parallel or substantially parallel to the longitudinal axis of the cart 10, depicted as longitudinal axis L in fig. 2. The engagement device also includes one or more second engagement members 60 (fig. 1) located between the proximal end 22 of the frame 20 and the first engagement member 50. Generally, the cart 10 uses a pair of second engagement members 60 (see fig. 1). Each second engagement member 60 includes a second receiving slot 62, each (slot 62) defining a major axis J oriented at an acute angle M (see fig. 2) to the longitudinal axis L of the cart 10. Typically, the angle M is 1 ° to 80 °, more particularly 10 ° to 70 °, more particularly 20 ° to 60 °, more particularly 30 ° to 55 °, more particularly 40 ° to 50 °. In some versions, the angle M can be 45 °. The present subject matter also includes the orientation of the first receiving slot 52 with a longitudinal axis K' (see fig. 2A) that is non-parallel to the longitudinal axis L of the cart 10. The non-parallel orientation is achieved, for example, by providing a receiving groove in the first engagement member defining the long axis K', which results in an angle Q when rotated about point P (see fig. 2A). The angle Q can thus be, for example, less than 60 °, more particularly less than 50 °, more particularly less than 40 °, more particularly less than 30 °, more particularly less than 20 °, and more particularly less than 10 °. The first receiving slot 52 and the second receiving slot 62 are accessible from the proximal end 22 of the frame 20. In general, the present subject matter includes a number of different arrangements and orientations of the first and second receiving slots and the combination of the two slots with one another. The present subject matter includes an axis of the first receiving groove that is non-parallel to an axis of the second receiving groove. The present subject matter also includes an axis of the first receiving slot parallel to the longitudinal axis of the cart. The present subject matter also includes an axis of the second receiving slot oriented at an acute angle to the longitudinal axis of the cart.

When the axis L of the frame 20 is substantially horizontal with the ground (fig. 2) and when the cart 10 is tipped over (fig. 1) to move the machine 100, gravity helps to fixedly mount the machine 100 to the frame 20 without any additional locking mechanism due to the orientation of the slots 52 and 62 relative to the frame 20. This provides an easy release feature due to the orientation of the channels 52 and 62 relative to the frame 20.

In a particular version, the engagement means of the cart do not use any latching or locking type components or assemblies. Thus, in these versions, the engagement means are referred to as latchless or "latchless". However, as described herein, in other versions of the cart, one or more latches or detents can be used.

In certain versions, the engagement device is configured such that when the pipe opener is positioned and engaged therein, the bottom of the pipe opener or the ground contacting member is not in contact with the transport cart and/or the cart frame. Instead, the pipe opener is supported on the engagement means of the cart by means of a frame member of the pipe opener. Typically, such support is between the engagement means and one or more frame rails of the pipe opener. However, it should be understood that the present subject matter also includes patterns in which the canaliculus is supported on a cart using other configurations, including arrangements in which the bottom of the canaliculus is in contact with the cart and/or its frame.

The transport cart of the present subject matter can be used with a variety of different pipe dredgers. Non-limiting examples of such machines include segmented pipe groomers sold under the RIDGID mark, such as model K-5208 and K-60 SP. The subject transport cart may also be used with other commercially available machines of other manufacturers and/or suppliers. It is also contemplated that the transport cart may be used with other types of pipe openers such as, but not limited to, drum type openers, steel bar type openers, high pressure washers, and FlexShaft pipe openers.

It will be appreciated that by placing one or more pipe clearing frame components, such as the pipe frame of a pipe clearing machine (e.g., a K-5208 segmented pipe clearing machine), in the slot of the coupling device, the machine and transport cart become connected and can only be separated by a specific operation by the end user. The engagement means is thus configured to eliminate unintended disengagement during normal use or transportation.

Further, in many embodiments, the subject cart includes one or more legs that support the cart when the cart is upright, thereby reducing the footprint of the cart during vehicle transport or storage. An example of such a leg is shown in fig. 1. Specifically, the cart 10 includes a pair of legs 70 extending forward from the distal end 24 of the frame 20. It should be understood that the present subject matter includes a wide variety of legs, leg configurations, and positioning on a frame for securing one or more legs. It should also be understood that the legs 70 may be integral with the frame 20 and/or the first engagement member 50, such as shown with reference to the cart 10 of fig.

In many embodiments, the transport cart includes a space or area along the frame for an end user to place a pipe clearing fitting (e.g., a segmented cable carrier housing a pipe clearing cable) on the cart. The cart may include one or more mounting arms for supporting and/or releasably retaining such accessories or components on the cart. Fig. 1 illustrates a pair of mounting arms 80 extending forward from the frame 20. The mounting arm 80 is generally positioned between the proximal end 22 of the frame 20 and the second coupling member 60. However, the present subject matter includes other locations and configurations for mounting arm 80. This feature allows a user to transport the segmented cable carrier system with the pipe chase to a job site without multiple trips and may include the use of friction reducing materials at the interface between the cable carrier and the cart (especially the simpler loading/unloading mounting arm). Representative and non-limiting examples of friction reducing materials include High Density Polyethylene (HDPE) and/or Ultra High Molecular Weight Polyethylene (UHMWPE).

Figures 3 and 4 illustrate a transport cart carrying the respective pipe clearing devices in a transport position. Specifically, fig. 3 depicts a cable carrier 90 that is generally supported on the cart 10 by the mounting arm 80. Fig. 3 also shows the pipe opener 100 releasably engaged with the cart 10 by the previously described engagement means. Fig. 4 shows the pipe opener 100 and the cart 10 without the cable carrier 90 described in fig. 3. In many versions of the cart 10, the cart and mounting arm 80 are configured to hold and/or support the drum or cable carrier 90 in a vertical orientation such that the plane of the cable carrier 90 extends vertically or substantially vertically when the cart 10 is resting in the resting or storage position depicted in fig. 1.

In many embodiments, the transport cart includes a carriage assembly that holds the units stationary during use, allowing a user to operate the machine while the machine is engaged with and placed on the cart. The stand can be placed in a storage position where the cart can be easily moved. After placing the stand in the storage position shown in fig. 6, the stand retracts to extend generally along the cart frame so as not to interfere with wheeled transport of the cart and its contents. When the stand is placed in the use position as shown in fig. 5, the cart is positioned to rest on an underlying surface or ground, and the stand extends from its storage position to support the distal end of the cart. In this position of use, the wheels of the cart are typically not in contact, i.e., contact free, with the underlying surface or ground. A representative example of a carriage assembly is shown in the referenced figures as carriage assembly 110. The bracket assembly 110 includes a bracket member 112 having a proximal end 114 and an opposite distal end 116. The bracket assembly 110 also includes an articulated base 118 at which the proximal end 114 of the bracket member 112 is movably attached. The bracket assembly 110 also includes a wedge 120 disposed at the distal end 116 of the bracket member 112. In many versions, the rack assembly 110 also includes one or more retaining clips 122 secured to the frame 20 to releasably retain the rack member 112 when placed in the storage position.

In many embodiments, the transport cart includes provisions that allow the cart to be conveniently moved on stairs. By positioning one or more step support brackets on the cart that extend tangentially or nearly tangentially to the wheel, the step support brackets can meet and make sliding contact with the step, providing a smooth and flat surface engagement with the step surface. The term "tangent or nearly tangent to the wheel" refers to the position and orientation of the step support bracket relative to the outer edge of the corresponding wheel of the cart as viewed along a line parallel to the axis of rotation of the wheel. "nearly tangent to the wheel" includes positions and orientations where the step support bracket is not exactly tangent to the outer edge of the wheel, but is in the range of 90% to 100%, most particularly 95% to 100%, of the radial distance of the wheel. A low friction material or an anti-friction material can be used at the interface between the step and the step support bracket to further reduce the work required to step up and down the step. An example of such a device is shown in fig. 7. Specifically, fig. 7 illustrates the step support bracket 130 extending rearward from the frame 20 of the stroller 10. The step support bracket 130 generally extends along an axis E. As will be appreciated, the wheel 30 has a radial distance C taken from the center of the wheel shown as B. In the particular configuration shown in fig. 7, the step support bracket 130 is positioned and/or oriented such that the bracket 130 is not tangent to the wheel 30, but instead intersects the wheel radius at 132, thereby defining a radial distance D. The step support bracket 130 is positioned and/or oriented such that the radial distance D is in the range of 90% to 100%, more particularly 95% to 100%, of the wheel radial distance C. The present subject matter is not limited to these particular positions and/or orientations of the step support bracket 130.

In some embodiments, the cart is configured such that the frame is not parallel to the underlying surface at an angle when the cart is lowered or placed in a generally horizontal position. This arrangement better holds the pipe racker and pipe racking cable (if present) in place on the cart during assembly standstill or transport. Referring to fig. 8, the cart 10 is shown resting on a ground or floor surface 140. The frame 20 extends along the previously mentioned frame longitudinal axis L. In this version, the frame 20 includes one or more rearwardly extending floor supports 26 generally located at the proximal end 22 of the frame 20. The previously mentioned handle 40 can be incorporated into the floor support 26. The floor support 26 is positioned and/or configured such that when the cart is resting in the position shown in fig. 8, i.e., on the floor surface 140, the longitudinal axis L of the frame 20 is non-parallel to the floor surface 140 and extends at an angle a. Angle a is typically 1 ° to 10 °, and in some versions 2 ° to 5 °. However, it is to be understood that the subject matter is not limited to these particular orientations.

A significant advantage of the present subject matter is the efficiency that end users achieve due to the improved transportability of the pipe opener when the job site space limitations are insufficient for a larger footprint, and the flexibility to quickly connect or disconnect the machine from the wheeled transport cart. The ease with which this is achieved results in increased time efficiency of use.

Allowing the pipe clearing cable to be transported with the pipe clearing machine further increases the efficiency achieved by the operator by reducing the number of work and/or strokes required to set up the equipment at the work site. Also, the bracket increases the efficiency of the end user by allowing efficient machine use when the pipe clearing machine is connected to the transport cart, thereby eliminating the need to remove the machine from the cart if not necessary.

The present subject matter also provides several alternative cart embodiments for quick attachment or removal of a pipe opener on a transport cart. For example, in certain versions, transport carts configured with various operational transport cart configurations are provided through a set of components that can be rearranged according to the particular needs of the end user or the work site environment. By positioning the components in another way, different configurations are achieved. Fig. 9 and 10 illustrate two alternative cart and component configurations.

In this embodiment, the base frame 210, cross members 220, 222, and handle ring 230 are common to the lower (B-frame style) transport cart 200 and the upper (a-frame style) transport cart 300. The lower transport cart 200 houses additional bumpers 250, 252 to rest on the ground when the unit is at rest, while the upper transport cart 300 houses the unique leg weldments 240, 242 to complete the structure that is upright when at rest. With very few working or custom parts, these smaller, simpler differences enable one transport cart configuration to be converted to another in a very efficient way.

As shown in fig. 10, the transport cart can be further configured to carry a container, such as a drum 90, of a pipe clearing cable in addition to a base pipe clearing machine, such as machine 100.

To allow some end users to flexibly use the basic pipe dredge without a transport cart footprint at the job site, the present subject matter further provides for quick connection and disconnection of the pipe dredging device to the cart. This can be achieved by the various devices and methods described herein.

By having side positioning tabs on the transport cart, the operator can first simply lower the detached pipe opener onto the transport cart and laterally position the unit. The first and second positioning tabs then allow the user to effectively longitudinally position the machine. The user pushes the machine until the first locating tab engages a structure of the pipe opener. A single latch then holds the unit in place. This is depicted in fig. 11. Specifically, fig. 11 illustrates another transport cart 400 according to the present subject matter. The cart 400 generally includes a frame 420 on which wheels 430 are rotatably supported. The cart 400 also includes the side locating tabs 435 extending forward from the frame 420. The cart 400 also includes one or more first locating tabs 450 adjacent the wheels 430, and one or more second locating tabs 460 between the first tabs 435 and the handle 440. After engaging the pipe opener 100 into each of the tabs 435, 450 and 460, the movable locking pin 475 is thereby positioned to releasably engage the pipe opener 100 (not shown in fig. 11) onto the cart 400 or with the cart 400.

Specifically, after the pipe opener 100 is placed on the transport cart 400 and moved into position by being positioned at the first positioning tab 460, the locking pin 475 can be rotated to engage the machine structure and apply the appropriate force to lock the pipe opener 100 to the transport cart 400. This is shown in fig. 12.

The subject cart optionally includes a plurality of locking pins located at only one end of the machine or at both ends of the machine to retain the machine on the transport cart. Alternatively or in addition, flexible straps may be used instead of, or in combination with, locking pins to hold the unit rigidly to the transport cart structure by stretching across the side rails or end cross members of the machine frame to hold the pipe mover in place correctly. Also, the front and rear locking tabs may be positioned to laterally locate and retain the unit, thereby eliminating the need for side locating tabs.

The securing or holding of the pipe racker to the cart may similarly be achieved by holding the pipe racker unit in place on the transport cart with spring loaded pivot tabs overlapping the main machine structure. In this way, the operator first lowers the machine and inserts the half-unit into the fixing tab on the transport trolley to hold one side of the machine in place. The end user then rotates the unit again to allow the other side of the machine to engage a spring loaded pivoting locking tab that rotates upon contact with the machine structure, but is spring biased to return and capture the unit. Upon disconnection, the operator will manually unlock the pivoting locking tabs and lift the unit from the transport cart. This configuration is shown in fig. 13 and 14. Specifically, fig. 13 and 14 illustrate a cart 500 supporting the pipe dredger 100. The cart 500 includes a frame 520 having a first set of supports 525 along one side of the frame and a second set of supports 535 along the other side of the frame. As previously described, corresponding spring-loaded pivot tabs 528 are provided in association with the first set of supports 525.

The present subject matter may also use vertical pins in the transport cart that align with holes or slots in the machine structure when installed. In this way, the operator first lowers the machine onto the transport cart in such a way that the alignment pins of the transport cart engage the holes/slots in the machine, ensuring that the machine is in the correct mounting position. This alignment would then utilize a similar locking mechanism as described herein to fully constrain the machine to the transport cart for transport and/or use.

The present subject matter also provides the same or similar locking variants via single or multiple attachment points between the pipeline clearing device and the transport cart. Similarly, the present subject matter also provides a similar over-center locking mechanism that provides sufficient retention force to lock the machine onto a transport cart for wheeled movement and/or pipe clearing operations.

Fig. 15 schematically depicts the engagement of the pipe opener 100 with the transport cart 10. The pipe opener 100 comprises a first retaining member 102 and a second retaining member 104. The first retaining member 102 can include a plurality of retaining members, such as a pair of first retaining members. The second holding member 104 can include a plurality of holding members, such as a pair of second holding members. Fig. 15 further illustrates the engagement between the pipe chase 100 and the cart 10 by positioning the first retaining member 102 within the first receiving channel 52 and the second retaining member 104 within the second receiving channel 62. The first retaining member 102 is sized and shaped to be received within the first receiving slot 52; and/or the first receiving groove 52 is sized and shaped to receive the first retaining member 102. The second holding member 104 is sized and shaped to be received within the second receiving groove 62; and/or the second receiving groove 62 is sized and shaped to receive the second retaining member 104.

In many versions, the engagement members 50, 60 include an engagement surface or area on which the retention features 102, 104 can be positioned, slid, or otherwise moved toward the receiving slots 52, 62. For example, prior to engaging the pipe chase 100 with the transport cart 10, the first retention feature 102 is placed on and/or in contact with the first engagement surface 51, the first engagement surface 51 being defined along the first engagement member 50 and adjacent to the first receiving groove 52. Before, after, or simultaneously with such placement or contact of the first retaining feature 102, the second retaining feature 104 is placed on and/or in contact with the second engagement face 61, which second engagement face 61 is defined along the second engagement member 60 and adjacent to the second receiving groove 62. As will be appreciated, the engagement faces 51, 61 facilitate sliding contact between the retaining members 102, 104 and the engagement members 50, 60.

A significant advantage of the subject cart using interchangeable components is the efficiency gained in predicting, planning, building and storing components and manufactured goods to produce a transport cart. With the modularity of the transport cart platform, the complexity is reduced, resulting in higher satisfaction in product manufacture and lower risk of delivery errors. This provides greater flexibility for the end user to configure the pipe groomer system with the minimum amount of work required to meet the needs of a particular user or precise application environment. The reduced manufacturing and storage complexity results in optimized order fulfillment, allows end users to master desired products more quickly and results in efficient use in a shorter time.

The quick connect and disconnect feature provides additional flexibility by removing the machine from the wheeled cart, providing greater transportability of the pipe dredger when the job site space limitations are insufficient for larger footprints. The ease with which this is achieved results in improved time efficiency.

While the subject transport cart has been described in association with a pipeline clearing device, it should be understood that the subject matter is not so limited. Instead, the cart can also be used to transport and/or support a variety of different equipment and machines other than a pipe pull.

The present subject matter also provides various methods of using the carts described herein. In particular, these methods are related to transport pipe openers. For example, the method includes providing a transport cart that includes (a) a frame defining a proximal end and an opposite distal end, the frame defining a longitudinal axis extending between the proximal end and the distal end, and including a pair of wheels rotatably secured to the frame adjacent the distal end, and (b) an engagement device secured to the frame. The engagement device includes (i) a first member adjacent the distal end of the frame and defining a first receiving slot having an axis oriented parallel to the cart longitudinal axis, and (ii) a second member between the proximal end of the frame and the first member. The second member defines a second receiving slot having an axis oriented at an acute angle to the cart longitudinal axis, wherein both the first receiving slot and the second receiving slot are accessible from the proximal end of the frame. The method also involves aligning a first portion of the pipe pig frame with the first receiving groove and then aligning a second portion of the pipe pig frame with the second receiving groove. Subsequently, the pipe opener is moved relative to the cart such that the frame of the pipe opener is positioned in both the first receiving groove and the second receiving groove. This results in a secure and releasable engagement of the pipe opener to the cart.

In certain techniques, in the previously described methods, the moving operation positions the frame of the pipe opener into both the first receiving tank and the second receiving tank simultaneously.

The present subject matter also provides various systems for using the transport cart. For example, in one embodiment, a system includes a pipe dredger and a transport cart including a frame defining a proximal end and an opposite distal end. The frame defines a longitudinal axis extending between a proximal end and a distal end, the frame including a pair of wheels rotatably secured to the frame adjacent the distal end, and an engagement device secured to the frame. The engagement device includes (i) a first member adjacent the distal end of the frame and defining a first receiving slot having an axis oriented parallel to the cart longitudinal axis, and (ii) a second member between the proximal end of the frame and the first member. The second member defines a second receiving slot having an axis oriented at an acute angle to the cart longitudinal axis, wherein both the first receiving slot and the second receiving slot are accessible from the proximal end of the frame.

In another embodiment, a system includes a pipe opener and a transport cart including a frame defining a proximal end and an opposite distal end. The frame defines a longitudinal axis extending between a proximal end and a distal end. The frame includes a pair of wheels adjacent the distal end and rotatably secured to the frame, and a carriage assembly secured to the frame. The carriage assembly includes a carriage positionable between a storage position and a use position, wherein the pair of wheels are not in contact with an underlying surface when the frame is oriented to rest on the underlying surface and the carriage is positioned to the use position.

In another embodiment, a system includes a pipe dredger and a transport cart. The transport cart includes a frame defining a proximal end and an opposite distal end. The frame defines a longitudinal axis extending between a proximal end and a distal end. The frame includes a pair of wheels adjacent the distal end and rotatably secured to the frame. The transport cart also includes a step support bracket secured to the frame and positioned such that the bracket extends tangent or nearly tangent to at least one of the pair of wheels.

Future applications and developments of this technology will undoubtedly bring many other benefits.

All patents, applications, standards, and articles described herein are hereby incorporated by reference in their entirety.

The present subject matter includes all operable combinations of features and aspects described herein. Thus, for example, if one feature is described in connection with one embodiment and another feature is described in connection with another embodiment, it is to be understood that the present subject matter includes embodiments having combinations of these features.

In view of the foregoing, the present subject matter solves many of the problems associated with previous strategies, systems, and/or apparatuses. It will be understood, however, that various changes in the details, materials, and arrangements of the parts which have been herein described and illustrated in order to explain the nature of this subject matter may be made by those skilled in the art without departing from the principle and scope of the claimed subject matter as recited in the appended claims.