Expansion telescopic device for crane slide wire and crane slide wire

Abstract

The utility model relates to the technical field of crane slide wires, in particular to an expansion telescopic device for a crane slide wire and the crane slide wire. The utility model provides an expansion telescopic device for a slide wire of a crane. The expansion telescopic device comprises a first rail body, a connecting rail body and a second rail body which are connected in sequence, one end, close to the connecting rail body, of the first rail body is provided with at least one first via hole, one end, close to the first rail body, of the connecting rail body is provided with second via holes in one-to-one correspondence with the first via holes, and the first via holes and the second via holes are connected through bolts and nuts; at least one of each pair of the first via hole and the second via hole is in a long-strip hole shape extending in the length direction of the connecting rail body. The expansion telescopic device for the crane slide wire completely solves the problem of deformation caused by expansion of the slide wire and the problem of power failure and production halt caused by high-temperature expansion deformation of the crane slide wire in a steel mill.

Description

Technical Field

[0001] This utility model relates to the field of crane slide rail technology, specifically to an expansion and telescopic device for crane slide rail and a crane slide rail. Background Technology

[0002] The primary function of a crane's conductor rail is to provide power to moving equipment. The conductor rail consists of guide rails and a current collector. The fixed part of the guide rail is connected to the power source, while the current collector, as the moving part, slides along the guide rail to obtain power, thus supplying power to cranes and other mobile equipment. Crane conductor rails frequently experience power outages in high temperatures. Analysis revealed that this is due to factors such as the overheating of the steel (temperatures between 500°C and 1500°C) and the sustained rise in summer temperatures, causing the conductor rail material to expand and deform. This leads to uneven cable tension, resulting in current overload, or the slider in the current collector falling off, causing a short circuit and rendering the crane unable to operate normally, thus leading to shutdowns and production stoppages. Current solutions involve cutting off the deformed parts of the guide rail and welding new ones, but these problems recur, and an effective solution is currently lacking. Utility Model Content

[0003] (I) The problem to be solved by this utility model is that due to the red steel passing through the steel and the continuous rise in summer temperature, the sliding line system is deformed, which can easily cause the crane sliding line to lose power. At present, there is no effective solution.

[0004] (II) Technical Solution

[0005] An expansion and telescopic device for a crane sliding line includes a first rail body, a connecting rail body, and a second rail body connected in sequence.

[0006] The first rail body has at least one first through hole at one end near the connecting rail body, and the connecting rail body has a second through hole corresponding to the first through hole at one end near the first rail body. The first through hole and the second through hole are connected by bolts and nuts. In each pair of first through holes and second through holes, at least one is an elongated hole extending along the length direction of the connecting rail body, so that the first rail body can slide along the length direction of the connecting rail body.

[0007] The second rail body has at least one third through hole at one end near the connecting rail body, and the connecting rail body has a fourth through hole corresponding to the third through hole at one end near the second rail body. The third through hole and the fourth through hole are connected by bolts and nuts. In each pair of third through holes and fourth through holes, at least one is an elongated hole extending along the length direction of the connecting rail body, so that the second rail body can slide along the length direction of the connecting rail body.

[0008] According to one embodiment of the present invention, the first through hole and the second through hole are both elongated holes, and the third through hole and the fourth through hole are both elongated holes.

[0009] According to one embodiment of the present invention, the first rail body, the connecting rail body, and the second rail body are all angle steel; the angle steel includes a top plate and a vertical plate connected to each other, the top plate is perpendicular to the vertical plate, and the top plate is higher than the vertical plate;

[0010] The first through hole is provided on the vertical plate of the first rail body, the third through hole is provided on the vertical plate of the second rail body, and both the second through hole and the fourth through hole are provided on the vertical plate of the connecting rail body.

[0011] According to one embodiment of the present invention, the lower surface of the top plate of the first rail body and the lower surface of the top plate of the second rail body both rest on the top plate of the connecting rail body.

[0012] According to one embodiment of the present invention, the cable includes at least one cable, at least one first terminal is installed on the first rail, at least one second terminal is installed on the second rail, and the two ends of the cable are respectively connected to the first terminal and the second terminal.

[0013] According to one embodiment of the present invention, a first edge plate in the shape of an angle steel is provided on the end face of the first rail body facing the second rail body, and the inner wall of the first edge plate is flush with the inner wall of the first rail body.

[0014] The second rail body has a second edge plate in the shape of an angle steel on the end face facing the first rail body, and the outer side of the second edge plate is flush with the outer side of the second rail body;

[0015] The first rail body and the second rail body have the same thickness, and the sum of the thicknesses of the first edge plate and the second edge plate is the same as the thickness of the first rail body.

[0016] According to one embodiment of the present invention, a plurality of first through holes are provided, and the plurality of first through holes are arranged in a vertical direction; a plurality of third through holes are provided, and the plurality of third through holes are arranged in a vertical direction.

[0017] A crane conductor rail includes the aforementioned expansion and telescopic device for a crane conductor rail.

[0018] The beneficial effects of this utility model are:

[0019] This utility model provides an expansion and telescopic device for a crane sliding rail, comprising a first rail body, a connecting rail body, and a second rail body connected in sequence. The first rail body has at least one first through hole at its end near the connecting rail body, and the connecting rail body has a second through hole corresponding to the first through hole at its end near the first rail body. The first and second through holes are connected by bolts and nuts. At least one of each pair of first and second through holes is an elongated hole extending along the length of the connecting rail body, allowing the first rail body to slide along the length of the connecting rail body. The second rail body has at least one third through hole at its end near the connecting rail body, and the connecting rail body has a fourth through hole corresponding to the third through hole at its end near the second rail body. The third and fourth through holes are connected by bolts and nuts. At least one of each pair of third and fourth through holes is an elongated hole extending along the length of the connecting rail body, allowing the second rail body to slide along the length of the connecting rail body.

[0020] When the ambient temperature rises or red-hot steel passes through, the first rail can slide relative to the connecting rail along its length, and simultaneously, the second rail can slide relative to the connecting rail along its length. This provides space for the conductor rail to release stress, or in other words, space for expansion and release. Therefore, it completely solves the problem of deformation caused by expansion in existing conductor rails, and eliminates power outages and production stoppages caused by high-temperature expansion deformation of steel plant crane conductor rails. Furthermore, the expansion and telescopic device used in this crane conductor rail is simple in structure, low in cost, easy to manufacture, and reduces maintenance costs. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A perspective view of the crane slide rail expansion and telescopic device provided in the embodiment of this utility model;

[0023] Figure 2 A front view of the crane slide rail expansion and telescopic device provided in an embodiment of this utility model;

[0024] Figure 3 Rear view of the crane slide rail expansion and telescopic device provided in this embodiment of the utility model;

[0025] Figure 4 Provided for the embodiments of this utility model Figure 1 Enlarged view of section A.

[0026] Icons: 1. First rail body; 101. First through hole; 102. First edge plate; 2. Connecting rail body; 201. Second through hole; 202. Fourth through hole; 3. Second rail body; 301. Third through hole; 302. Second edge plate; 4. First bolt; 5. Second bolt; 6. Cable; 7. First terminal; 8. Second terminal. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Example 1:

[0029] like Figures 1-4 As shown, Embodiment 1 of this utility model provides an expansion and telescopic device for a crane sliding line, including a first rail body 1, a connecting rail body 2, and a second rail body 3 connected in sequence.

[0030] The first rail body 1 has at least one first through hole 101 at one end near the connecting rail body 2, and the connecting rail body 2 has a second through hole 201 corresponding to the first through hole 101 at one end near the first rail body 1. The first through hole 101 and the second through hole 201 are connected by bolts and nuts. In each pair of first through holes 101 and second through holes 201, at least one is in the shape of an elongated hole extending along the length direction of the connecting rail body 2, so that the first rail body 1 can slide along the length direction of the connecting rail body 2.

[0031] The second rail body 3 has at least one third through hole 301 at one end near the connecting rail body 2, and the connecting rail body 2 has a fourth through hole 202 corresponding to the third through hole 301 at one end near the second rail body 3. The third through hole 301 and the fourth through hole 202 are connected by bolts and nuts. At least one of each pair of third through holes 301 and fourth through holes 202 is in the shape of an elongated hole extending along the length direction of the connecting rail body 2, so that the second rail body 3 can slide along the length direction of the connecting rail body 2.

[0032] In this embodiment, when the hot steel is subjected to excessive heat and the summer temperature continues to rise, the conductor rail material expands, the internal stress of the conductor rail cannot be released, the conductor rail system deforms, and this leads to current overload and power outage of the crane conductor rail. Therefore, we improve the high-temperature section (approximately 200 meters) of the conductor rail. Specifically, the high-temperature section of the conductor rail includes multiple expansion and contraction devices for this crane conductor rail, preferably one set of expansion and contraction devices every 60 meters.

[0033] When the ambient temperature rises or red-hot steel passes through, the first rail 1 can slide relative to the connecting rail 2 along its length, and the second rail 3 can also slide relative to the connecting rail 2 along its length. This provides space for the conductor rail to release stress, or in other words, space for expansion and release. Therefore, it completely solves the problem of deformation caused by expansion in existing conductor rails, and resolves the problem of power outages and production stoppages caused by high-temperature expansion and deformation of steel plant crane conductor rails. Furthermore, the expansion and telescopic device used in this crane conductor rail is simple in structure, low in cost, easy to manufacture, and reduces maintenance costs.

[0034] In this embodiment, since the cross-section of the crane's sliding line in this steel plant is an inverted L-shape, that is, in the shape of a long strip of angle steel, the first rail body 1, the connecting rail body 2, and the second rail body 3 in the expansion and telescopic device are all made of angle steel.

[0035] Optionally, the first rail body 1, the connecting rail body 2, and the second rail body 3 are made of three sections of carbon steel angle steel of equal length, specifically 50*50mm in size, 3mm in thickness, and 500mm in length.

[0036] The first rail 1, the connecting rail 2, and the second rail 3 each include a connected top plate and a vertical plate. The top plate is perpendicular to the vertical plate and is higher than the vertical plate. The lower surfaces of the top plates of the first rail 1 and the second rail 3 rest on the upper surface of the top plate of the connecting rail 2. The outer surfaces of the vertical plates of the connecting rail 2 are in close contact with the inner surfaces of the vertical plates of the first rail 1 and the second rail 3, respectively.

[0037] Furthermore, the first through hole 101 of the first rail body 1 is horizontally provided on the vertical plate of the first rail body 1, the third through hole 301 of the second rail body 3 is horizontally provided on the vertical plate of the second rail body 3, and the second through hole 201 and the fourth through hole 202 on the connecting rail body 2 are respectively provided on the left and right sides of the vertical plate of the connecting rail body 2.

[0038] As a specific embodiment, such as Figure 1 , Figure 2 and Figure 3As shown, the first through hole 101, the second through hole 201, the third through hole 301, and the fourth through hole 202 are all elongated holes. When assembling the first rail body 1, the second rail body 2, and the third rail body 3, place the first rail body 1 and the second rail body 3 on the left and right sides of the connecting rail body 2 respectively. Simultaneously, adjust the positions of the first rail body 1 and the second rail body 3 so that the first through hole 101 on the right side of the first rail body 1 is aligned with the second through hole 201 on the left side of the connecting rail body 2, and the fourth through hole 202 on the right side of the connecting rail body 2 is aligned with the third through hole 301 on the left side of the second rail body 3. Next, pass the first bolt 4 through the second through hole 201 and the first through hole 101 in sequence, and pass the second bolt 5 through the fourth through hole 202 and the third through hole 301 in sequence. Then, screw nuts onto the ends of the first bolt 4 and the second bolt 5, and tighten the nuts to prevent the first rail body 1 from separating from the connecting rail body 2 and the second rail body 3 from separating from the connecting rail body 2.

[0039] It should be emphasized that the nuts on the first bolt 4 and the second bolt 5 should not be tightened completely to prevent the first rail body 1 and the second rail body 3 from being unable to slide relative to the connecting rail body 2.

[0040] For example, to enhance the connectivity between the first rail 1, the connecting rail 2, and the second rail 3, thereby improving safety. (e.g.) Figure 2 As shown, there are two first through holes 101 on the right side of the first rail body 1, and two corresponding second through holes 201 on the left side of the connecting rail body 2. There are two third through holes 301 on the left side of the second rail body 3, and correspondingly, two fourth through holes 202 on the right side of the connecting rail body 2. Thus, the first rail body 1 and the connecting rail body 2 are connected by two bolts and nuts, and the second rail body 3 and the connecting rail body 2 are also connected by two bolts and nuts.

[0041] In addition, two or three nuts can be screwed onto each bolt to solve the problem of individual nuts easily coming loose.

[0042] As an optional embodiment, the first through hole 101 on the first rail body 1 is a round hole, the second through hole 201 connecting the left side of the rail body 2 is an elongated hole, the third through hole 301 on the second rail body 3 is a round hole, and the fourth through hole 202 connecting the right side of the rail body 2 is an elongated hole.

[0043] Alternatively, the first through hole 101 on the first rail body 1 is an elongated hole, the second through hole 201 on the left side of the connecting rail body 2 is a round hole, the third through hole 301 on the second rail body 3 is an elongated hole, and the fourth through hole 202 on the right side of the connecting rail body 2 is a round hole.

[0044] It should be noted that the thickness of the first rail body 1 and the thickness of the second rail body 3 are the same, so that the upper surfaces of the first rail body 1 and the second rail body 3 are flush. That is, the upper surfaces of the first rail body 1 and the second rail body 3 are flush with the bearing surface of the crane's sliding rail.

[0045] Furthermore, it should be noted that a fracture or recess will be formed between the right end face of the top plate of the first rail 1, the upper surface of the top plate of the connecting rail 2, and the left end face of the top plate of the second rail 3. The theoretical depth of this fracture is the same as the thickness of the first rail 1 and the second rail 3. That is, in its natural state, the distance between the right end face of the top plate of the first rail 1 and the left end face of the top plate of the second rail 3 is 60mm-80mm. Since the width of the current collector slider of the crane conductor rail is much greater than 80mm, when the current collector slider of the crane conductor rail travels to this fracture, it can smoothly pass over the fracture without causing the slider to sink into the fracture.

[0046] In addition, such as Figure 4 As shown, a first edge plate 102 is integrally formed on the right end face of the first rail body 1. The first edge plate 102 is also in the shape of an angle steel, and its inner wall is flush with the inner wall of the first rail body 1. The thickness of the first edge plate 102 is less than the thickness of the first rail body 1. A second edge plate 302 is integrally formed on the left end face of the second rail body 3. The outer surface of the second edge plate 302 is flush with the outer surface of the second rail body 3, and its thickness is less than the thickness of the second rail body 3. Furthermore, the sum of the thicknesses of the first edge plate 102 and the second edge plate 302 is the same as the thickness of the first rail body 1. Since the thicknesses of the first rail body 1 and the second rail body 3 are the same, in the natural state, when the top plate of the second edge plate 302 rests on the top plate of the first edge plate 102, the upper surfaces of the second edge plate 302, the first rail body 1, and the second rail body 3 are flush.

[0047] As an optional embodiment, such as Figure 1 and Figure 2 As shown, two cables 6 connect the vertical plates of the first rail 1 and the second rail 3. Specifically, two first terminals 7 are installed on the first rail 1, and two second terminals 8 are installed on the second rail 3. The first terminals 7 and second terminals 8 are integrally corresponding, and the two ends of the cable 6 are connected to the first terminals 7 and the second terminals 8 respectively. Since the entire sliding rail needs to be energized, and the conductivity is weak because the first rail 1 and the connecting rail 2, as well as the connecting rail 2 and the second rail 3 are disconnected, the conductivity is relatively weak. In this embodiment, the first rail 1 and the second rail 3 are directly electrically connected using the cable 6, which can ensure the conductivity stability of the entire expansion and contraction device to a certain extent.

[0048] In summary, this expansion and contraction device can solve the problem of high-temperature expansion and deformation of any guide rail in a steel plant, greatly reducing the procurement cost of guide rails, significantly extending the service life of guide rails, reducing the number of equipment maintenance operations, shortening replacement time, and reducing equipment downtime.

[0049] Example 2:

[0050] This second embodiment provides a crane conductor rail, which includes at least one expansion and contraction device as described in the first embodiment. Due to factors such as the hot-rolled steel and continuously rising summer temperatures, the conductor rail material expands, causing deformation of the conductor rail system. This results in uneven cable tension and potential current overload. The high-temperature section (approximately 200m) of this crane conductor rail is pre-installed with multiple expansion and contraction devices as described in the first embodiment at the factory, eliminating the need to wait until deformation occurs before replacing the expansion and contraction devices. For example, one set of expansion and contraction devices is added every 60 meters in the high-temperature section of the crane conductor rail.

[0051] Therefore, the crane's conductor rail can automatically adjust according to temperature changes, ensuring stable operation without power outages caused by deformation due to high temperatures, thus eliminating downtime caused by such problems. Furthermore, the expansion and telescopic device is simple to manufacture, highly interchangeable, easy to replace, and inexpensive; if damaged, replacement can be scheduled during routine maintenance.

[0052] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0054] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An expansion and telescopic device for a crane's sliding contact line, characterized in that, It includes a first rail body (1), a connecting rail body (2), and a second rail body (3) that are connected in sequence; The first rail body (1) has at least one first through hole (101) at one end near the connecting rail body (2), and the connecting rail body (2) has a second through hole (201) corresponding to the first through hole (101) at one end near the first rail body (1). The first through hole (101) and the second through hole (201) are connected by bolts and nuts. In each pair of first through holes (101) and second through holes (201), at least one is an elongated hole extending along the length direction of the connecting rail body (2), so that the first rail body (1) can slide along the length direction of the connecting rail body (2). The second rail body (3) has at least one third through hole (301) at one end near the connecting rail body (2), and the connecting rail body (2) has a fourth through hole (202) corresponding to the third through hole (301) at one end near the second rail body (3). The third through hole (301) and the fourth through hole (202) are connected by bolts and nuts. At least one of each pair of third through holes (301) and fourth through holes (202) is an elongated hole extending along the length direction of the connecting rail body (2), so that the second rail body (3) can slide along the length direction of the connecting rail body (2).

2. The expansion and telescopic device for a crane sliding line according to claim 1, characterized in that, The first via (101) and the second via (201) are both elongated holes, and the third via (301) and the fourth via (202) are both elongated holes.

3. The expansion and telescopic device for a crane sliding line according to claim 1, characterized in that, The first rail body (1), the connecting rail body (2), and the second rail body (3) are all angle steel; the angle steel includes a top plate and a vertical plate connected to each other, the top plate is perpendicular to the vertical plate, and the top plate is higher than the vertical plate; The first through hole (101) is provided on the vertical plate of the first rail body (1), the third through hole (301) is provided on the vertical plate of the second rail body (3), and the second through hole (201) and the fourth through hole (202) are both provided on the vertical plate of the connecting rail body (2).

4. The expansion and telescopic device for a crane sliding line according to claim 3, characterized in that, The lower surface of the top plate of the first rail (1) and the lower surface of the top plate of the second rail (3) both rest on the top plate of the connecting rail (2).

5. The expansion and telescopic device for a crane sliding line according to claim 1, characterized in that, Includes at least one cable (6), at least one first terminal (7) is installed on the first rail (1), at least one second terminal (8) is installed on the second rail (3), and the two ends of the cable (6) are respectively connected to the first terminal (7) and the second terminal (8).

6. The expansion and telescopic device for a crane sliding line according to claim 4, characterized in that, The first rail body (1) has a first edge plate (102) in the shape of an angle steel on the end face facing the second rail body (3), and the inner wall of the first edge plate (102) is flush with the inner wall of the first rail body (1). The second rail body (3) has a second edge plate (302) in the shape of an angle steel on the end face facing the first rail body (1), and the outer side of the second edge plate (302) is flush with the outer side of the second rail body (3); The first rail body (1) and the second rail body (3) have the same thickness, and the sum of the thicknesses of the first edge plate (102) and the second edge plate (302) is the same as the thickness of the first rail body (1).

7. The expansion and telescopic device for a crane sliding line according to claim 3, characterized in that, Multiple first vias (101) are provided, and the multiple first vias (101) are arranged in a vertical direction; multiple third vias (301) are provided, and the multiple third vias (301) are arranged in a vertical direction.

8. A crane conductor rail, characterized in that, The invention includes an expansion and telescopic device for a crane slide rail as described in any one of claims 1-7.

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