Transverse running track for cast pipes

Abstract

The invention relates to a cast pipe transverse operation track which comprises a first track and a second track, the first track is two tracks parallel in the cast pipe conveying direction, the distance between the two tracks is smaller than the axial length of a cast pipe, and the top face of the first track is horizontal or provided with a slope with the downward conveying direction; the second rails are two rails which are parallel in the conveying direction of the cast pipes and are located in the first rails; the first rotating shaft is located on the lower side of the top face of the first rail and located at the tail end of the second rail in the cast pipe conveying direction, and the second rail rotates by means of the first rotating shaft so that the top face of the second rail can reciprocate up and down on the top face of the first rail; the cast pipe conveying device has the beneficial effects that power is provided for cast pipe conveying through lifting of the second rail, and the safety risk after manual intervention is reduced.

Description

Technical Field

[0001] The invention belongs to the field of ductile iron pipe production and processing equipment, and in particular relates to a transverse running track for cast pipes. Background Art

[0002] The production process of ductile iron pipes (referred to as "cast pipes", machine-made cast iron pipes or gray iron pipes should also be considered equivalent) is an assembly line with multiple processing stations such as centrifugal casting, annealing, hydraulic pressure, zinc spraying, and lining coating. Transportation devices or equipment are required for the transfer of ductile iron pipes between each station. Usually, in the field of ductile iron pipe transportation technology, non-driven tracks are often used for the transportation of cast pipes over long distances, and steel sections are often spliced ​​into two fixed tracks arranged in parallel side by side. A certain slope is set in the running direction of the non-driven track. Since the outer dimensions of the cast pipe itself are cylindrical, it will automatically flip to the next station under the action of gravity. At the same time, multiple cast pipes can be stacked on the track, that is, transportation provides a buffer for the different production rhythms of the upper and lower stations.

[0003] However, the inventors found in their research on the prior art that since the non-driven track uses gravity to provide power for the operation of the cast pipe, if the slope is large, the cast pipe will generate a large amount of kinetic energy when rolling. In serious cases, it will fly out of the operating space, causing safety hazards. It may also collide with the cast pipe stranded on the track, causing damage to the product or even scrapping. In order to avoid this situation, a smaller slope is generally reserved for the non-driven track. In this case, the cast pipe will stop during transportation, and the smaller the slope, the greater the probability of stopping. After the cast pipe stops, manual intervention is required, and the use of tools to move it is difficult to control the intensity of the fluctuation, which increases safety risks and production costs and reduces transportation efficiency. In addition, the cast pipe production line is generally mixed flow production, that is, products of multiple specifications and diameters pass through the line at the same time, and it is difficult to choose a suitable non-driven track slope that is suitable for all pipelines.

[0004] Therefore, there is an urgent need for a cast pipe transverse running track that meets the requirements of pipeline stacking and operation. Summary of the invention

[0005] In order to overcome the problem of the inability to control the slope of the non-driven track in the prior art, the inventor designed a track-type lifting device using a multi-section linkage on the basis of a straight track or an original non-driven track, forming a cast pipe transverse operation track that can be connected in multiple sections and combines the advantages of a multi-station stepping form. The technical solution adopted by the present invention is: a cast pipe transverse operation track, comprising:

[0006] The first track is two tracks parallel to the casting pipe transportation direction, the distance between the two tracks is less than the axial length of the casting pipe, and the top surface of the first track is horizontal or has a downward slope in the transportation direction;

[0007] The second track is two tracks parallel to the casting pipe transportation direction and located inside the first track;

[0008] A first rotating shaft is located at the lower side of the top surface of the first track and at the tail end of the second track along the casting pipe transportation direction. The second track rotates with the help of the first rotating shaft so that the top surface of the second track reciprocates up and down on the top surface of the first track;

[0009] The lifting device drives the second track to rotate.

[0010] Furthermore, one side or both sides of the first rotating shaft protrude beyond the width of the second track;

[0011] And also includes:

[0012] The third track is two tracks parallel to the casting pipe transportation direction, with a width greater than the second track and smaller than the first track;

[0013] A third rotating shaft is located at the lower side of the top surface of the first track and at the tail end of the third track along the casting pipe transportation direction. The third track rotates with the help of the third rotating shaft so that the top surface of the third track reciprocates up and down on the top surface of the first track;

[0014] A first gear, fixedly connected to a protruding side of the first rotating shaft protruding from the second track on one side or both sides, the first gear and the first rotating shaft coaxially rotate;

[0015] a second rotating shaft, parallel to the first rotating shaft, and a second gear is disposed on the second rotating shaft at a position opposite to the first gear;

[0016] The second gear meshes with the first gear for transmission;

[0017] The third track is staggered and overlapped with the second track;

[0018] The variable diameter wheel is one of an elliptical wheel, a semicircular wheel, and a cam with a gradually changing radius. It is fixed on the second rotating shaft, rotates coaxially with the second rotating shaft, and is located on the lower side of the third track. The top surface of the third track reciprocates up and down on the top surface of the first track with the help of the change in radius when the variable diameter wheel rotates.

[0019] Furthermore, the relationship between the rise and fall of the second track, the rotation of the variable diameter wheel, and the rise and fall of the third track is:

[0020] When the second track is lifted, the third track is lowered by the rotation of the variable diameter wheel;

[0021] When the second track descends, the third track is lifted by the rotation of the variable diameter wheel.

[0022] Furthermore,

[0023] When the top surface of the second track is lifted above the top surface of the first track, the top surface of the third track is lower than the top surface of the first track;

[0024] When the top surface of the second track drops below the top surface of the first track, the top surface of the third track is higher than the top surface of the first track.

[0025] Furthermore,

[0026] The second gear radius is smaller than the first gear radius.

[0027] Furthermore,

[0028] There are more than two sets of the third rails, the width of which gradually increases along the transport direction of the cast pipe, and adjacent third rails are staggered and overlapped;

[0029] Along the casting pipe transport direction, the relationship between the first third track and the second third track is equivalent to the relationship between the second track and the third track.

[0030] Furthermore, a blocking device is provided at the end of the first track or the end of the third track along the casting pipe transportation direction;

[0031] The blocking and shifting device blocks the movement of the casting pipe or shifts the movement of the casting pipe by turning over.

[0032] The beneficial effects of the present invention compared with the prior art are: 1) utilizing the lifting of the second rail to provide power for the transportation of cast pipes and reduce the safety risks after human intervention; 2) utilizing the linkage of the third rail and the second rail to realize the two-stage power supply of the first rail within the interval between the third rail and the second rail; 3) utilizing multiple groups of connections of the third rail to form a rail lifting drive scheme similar to the stepping method. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a front view of a specific embodiment of the present invention;

[0034] Figure 2 A view showing the meshing relationship between the second gear and the first gear and the lifting state of the second track in a specific embodiment of the present invention;

[0035] Figure 3 This is a view showing the relationship between the variable diameter wheel and the third rail, and the lifting state of the third rail according to a specific embodiment of the present invention;

[0036] Figure 4 It is a detailed structural diagram of the assembly relationship between the first gear, the second gear, and the variable diameter wheel in a specific embodiment of the present invention;

[0037] The annotations are:

[0038] 100-first track; 200-second track; 210-lifting device; 300-third track; 400-first rotating shaft;

[0039] 410 - first gear; 500 - second rotating shaft; 510 - second gear; 520 - variable diameter wheel; 600 - third rotating shaft; 700 - shifting device. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0041] In order to overcome the problem of the inability to control the slope of the non-driven track in the existing technology, a multi-section linkage track-type lifting device is designed based on the straight track or the original non-driven track to form a multi-section connected, multi-station step-by-step cast pipe lateral operation track. Figures 1 to 4 The technical solution adopted in this specific implementation is: a cast pipe transverse running track, comprising:

[0042] The first track 100 is two tracks parallel to the transport direction of the cast pipe, the distance between the two tracks is less than the axial length of the cast pipe, and the top surface of the first track 100 is horizontal or has a downward slope in the transport direction; it should be noted that this specific implementation can exist in two forms, one is to add a second track 200 and other mechanisms to the original non-powered drive track, or it can be a newly designed operating track. If it is the original non-powered drive track, that is, the first track 100, the newly installed operating track can be a non-powered track with a certain slope, or it can be a straight track that simply uses the second track 200 to provide power.

[0043] The second track 200 is two parallel tracks along the casting pipe transportation direction and is located inside the first track 100; see Figure 1The interior refers to the middle of the two tracks in the first track 100. It should be noted that although the first track 100, the second track 200, and the third track 300 are limited to two tracks, the purpose is that the two tracks can support the flipping and movement of the cast pipe. In some embodiments, more than two tracks may be used to improve the stability of the support or the support area. In essence, two tracks are provided, which should be technical solutions within the invention concept and belong to equivalent technical features.

[0044] The first rotating shaft 400 is located at the lower side of the top surface of the first track 100 and at the tail end of the second track 200 along the casting pipe transportation direction. The second track 200 rotates with the help of the first rotating shaft 400, so that the top surface of the second track 200 reciprocates up and down on the top surface of the first track 100; see Figure 2 On the right side, the lifting of the first track 100 can provide power for the casting pipe on the first track 100, solving the problem of manual intervention in the prior art.

[0045] The lifting device 210 drives the second track 200 to rotate.

[0046] In other embodiments, see Figures 1 to 3 In order to avoid the situation where the casting pipe still stops or lacks power after passing the space where the first track 100 is located after the first track 100 provides power, the present specific implementation party also provides the following technical solutions: the first rotating shaft 400 protrudes on one side or both sides beyond the width of the second track 200; it should be noted that, in some embodiments, the rotating shaft may only be a hinge point, not necessarily a rod-shaped shaft body, so it can protrude on one side and cooperate with the third track 300 to provide power. In this specific implementation manner, the rotating shaft is applied to be a rod-shaped shaft.

[0047] And also includes:

[0048] The third track 300 is two tracks parallel to the casting pipe transportation direction, and has a width greater than the second track 200 and less than the first track 100. Since the variable diameter wheel 520 is required to provide lifting power to the third track 300 later, the third track 300 is generally wider than the second track 200, so that the variable diameter wheel 520 is located outside the second track 200 to avoid interference with the first rotating shaft 400.

[0049] The third rotating shaft 600 is located at the lower side of the top surface of the first track 100, at the tail end of the third track 300 along the casting pipe transportation direction. The third track 300 rotates with the help of the third rotating shaft 600, so that the top surface of the third track 300 reciprocates up and down on the top surface of the first track 100; please refer to Figure 1Since the third rotating shaft 600 is located directly below the first rotating shaft 400, a part of it is covered. However, it does not affect the understanding of the position of the third rotating shaft 600 by those skilled in the art.

[0050] See also Figure 4 A first gear 410 is fixedly connected to a protruding side of the first rotating shaft 400 protruding from the second track 200 on one side or both sides, and the first gear 410 rotates coaxially with the first rotating shaft 400;

[0051] A second rotating shaft 500 is parallel to the first rotating shaft 400, and a second gear 510 is disposed on the second rotating shaft 500 at a position opposite to the first gear 410;

[0052] The second gear 510 is meshed with the first gear 410 for transmission;

[0053] The third track 300 and the second track 200 are staggered and overlapped;

[0054] The variable diameter wheel 520 is one of an elliptical wheel, a semicircular wheel, and a cam with a gradually changing radius, fixed on the second rotating shaft 500, coaxially rotates with the second rotating shaft 500, and is located at the lower side of the third track 300. The top surface of the third track 300 reciprocates up and down on the top surface of the first track 100 by virtue of the change in radius when the variable diameter wheel 520 rotates. For those skilled in the art, it can be directly known that the original power for the rotation of the variable diameter wheel 520 is provided by the lifting device 210. The lifting device 210 drives the second track 200 to lift, drives the first rotating shaft 400 to rotate, the first rotating shaft 400 drives the first gear 410 to rotate, the first gear 410 drives the second gear 510 to rotate, and the second gear 510 drives the variable diameter wheel 520 to rotate. Since the variable diameter wheel 520 is one of an elliptical wheel, a semicircular wheel, and a cam with a gradually changing radius, it will drive the third track 300 to rise or fall as the rotation radius changes.

[0055] In some embodiments, preferably, the relationship between the rise and fall of the second track 200, the rotation of the variable diameter wheel 520, and the rise and fall of the third track 300 is:

[0056] When the second track 200 is lifted, the third track 300 is lowered by the rotation of the variable diameter wheel 520;

[0057] When the second track 200 is lowered, the third track 300 is lifted by the rotation of the diameter-changing wheel 520 .

[0058] In some embodiments, more preferably,

[0059] When the top surface of the second track 200 is lifted above the top surface of the first track 100, the top surface of the third track 300 is lower than the top surface of the first track 100;

[0060] When the top surface of the second track 200 falls below the top surface of the first track 100, the top surface of the third track 300 is higher than the top surface of the first track 100. Using the above motion relationship, this specific embodiment realizes a mechanism similar to a stepper, the second track 200 is lifted, the cast pipe rolls onto the third track 300, the second track 200 falls, the third track 300 is lifted, and the stepper drives the cast pipe to continue to move forward, while the cast pipe reserved in the space of the second track 200 cannot move forward because of the lack of power or the obstruction after the third track 300 is lifted. A sequential transfer is formed in the two spaces of the second track 200 and the third track 300.

[0061] In some embodiments, since the actual lifting angle of the second track 200 is very small, in order to enlarge the lifting distance of the third track 300,

[0062] The radius of the second gear 510 is smaller than the radius of the first gear 410 .

[0063] In other embodiments,

[0064] There are more than two groups of the third rails 300, the width of which gradually increases along the transport direction of the cast pipe, and adjacent third rails 300 are staggered and overlapped;

[0065] Along the casting pipe transportation direction, the relationship between the first third rail 300 and the second third rail 300 is equivalent to the relationship between the second rail 200 and the third rail 300. Although the diagram of the subsequent third rails 300 being connected in sequence is not clearly shown in the drawings, those skilled in the art can implement the above technical solution.

[0066] Preferably, in some embodiments, a blocking device 700 is further provided at the end of the first track 100 or the end of the third track 300 along the casting pipe transportation direction;

[0067] The blocking device 700 blocks the movement of the casting tube or drives the casting tube to move by flipping.

[0068] The specific operation is as follows: the casting pipe of the previous station enters the first track 100 and falls into the space where the second track 200 and the first track 100 intersect. The lifting device 210 drives the top surface of the second track 200 to be higher than the top surface of the first track 100. Since the lifting of the second track 200 is similar to the lifting of the hinged rod, one end is tilted, forming a slope along the casting pipe transportation direction, and the casting pipe is rotated with the help of the slope. In other embodiments, after the casting pipe exceeds the interval where the second track 200 is located, it may stop, that is, the second track 200 falls, and under the linkage of the variable diameter wheel 520, the third track 300 is lifted, and in the form of relay, the casting pipe continues to operate under the lifting of the third track 300. If the first track 100 is a non-powered track with a slope, the lifting of the third track 300 can also block the subsequent casting pipe operation. If the first track 100 is a track without a slope, it is still possible to select a suitable number of casting pipes to enter the next driving section according to the distance of the misaligned overlap of the second track 200 and the third track 300. This specific implementation method is to use the second track 200 to provide driving force or the second track 200 and the third track 300 to provide power for the casting pipe that is separated from the second track 200 section, or to connect multiple sections of the third track 300 to form a step-like operation section. Other finishing stations can be set in the step section.

[0069] The advantages compared with the prior art are: 1) utilizing the lifting of the second rail to provide power for the cast pipe transportation and reduce the safety risk after human intervention; 2) utilizing the linkage of the third rail and the second rail to realize the two-stage power supply of the first rail within the interval between the third rail and the second rail; 3) utilizing multiple groups of connections of the third rail to form a rail lifting drive scheme similar to the stepping method.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cast pipe transverse running track, characterized in that: include: The first track (100) is two tracks parallel to the casting pipe transportation direction, the distance between the two tracks is less than the axial length of the casting pipe, and the top surface of the first track (100) is horizontal or has a downward slope in the transportation direction; The second track (200) is two tracks parallel to the casting pipe transportation direction and located inside the first track (100); A first rotating shaft (400) is located at the lower side of the top surface of the first track (100) and at the tail end of the second track (200) along the casting pipe transportation direction. The second track (200) rotates with the help of the first rotating shaft (400) so that the top surface of the second track (200) reciprocates up and down on the top surface of the first track (100); The lifting device (210) drives the second track (200) to rotate.

2. The cast pipe transverse running track according to claim 1, characterized in that: The first rotating shaft (400) protrudes on one side or both sides beyond the width of the second track (200); And also includes: The third track (300) is two tracks parallel to the casting pipe transportation direction, with a width greater than the second track (200) and smaller than the first track (100); A third rotating shaft (600) is located at the lower side of the top surface of the first track (100) and at the tail end of the third track (300) along the casting pipe transportation direction. The third track (300) rotates with the help of the third rotating shaft (600) so that the top surface of the third track (300) reciprocates up and down on the top surface of the first track (100); A first gear (410) is fixedly connected to a protruding side of the first rotating shaft (400) protruding from one or both sides of the second track (200), and the first gear (410) rotates coaxially with the first rotating shaft (400); A second rotating shaft (500) is parallel to the first rotating shaft (400), and a second gear (510) is disposed on the second rotating shaft (500) at a position opposite to the first gear (410); The second gear (510) is meshed with the first gear (410) for transmission; The third track (300) and the second track (200) are overlapped in a staggered manner; The variable diameter wheel (520) is one of an elliptical wheel, a semicircular wheel and a cam with a gradually changing radius, is fixed on the second rotating shaft (500), rotates coaxially with the second rotating shaft (500), and is located at the lower side of the third track (300). The top surface of the third track (300) reciprocates up and down on the top surface of the first track (100) by virtue of the change in radius when the variable diameter wheel (520) rotates.

3. The cast pipe transverse running track according to claim 2, characterized in that: The relationship between the rise and fall of the second track (200), the rotation of the variable diameter wheel (520), and the rise and fall of the third track (300) is: When the second track (200) is lifted, the third track (300) is lowered by means of the rotation of the diameter-changing wheel (520); When the second track (200) descends, the third track (300) is lifted by means of the rotation of the variable diameter wheel (520).

4. The cast pipe transverse running track according to claim 3 is characterized in that: When the top surface of the second track (200) is lifted above the top surface of the first track (100), the top surface of the third track (300) is lower than the top surface of the first track (100); When the top surface of the second track (200) drops below the top surface of the first track (100), the top surface of the third track (300) is higher than the top surface of the first track (100).

5. The cast pipe transverse running track according to claim 2, characterized in that: The radius of the second gear (510) is smaller than the radius of the first gear (410).

6. The cast pipe transverse running track according to claim 3, characterized in that: There are more than two groups of the third rails (300), the width of which gradually increases along the casting pipe transportation direction, and adjacent third rails (300) are staggered and overlapped; Along the casting pipe transport direction, the relationship between the first third track (300) and the second third track (300) is equivalent to the relationship between the second track (200) and the third track (300).

7. The casting pipe transverse running track according to any one of claims 1 to 6, characterized in that: A blocking device (700) is also provided at the end of the first track (100) or the end of the third track (300) along the casting pipe transportation direction; The blocking and shifting device (700) blocks the movement of the casting pipe or shifts the movement of the casting pipe by turning over.

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