Expansion joint structure of cable bridge

Abstract

The utility model relates to an expansion joint structure of a cable bridge. The expansion joint structure comprises a base, a cover plate, a guide rod and a mounting seat, the base is of a U-shaped groove structure. First sliding grooves are formed in the two sides of the base correspondingly. The cover plate and the base form a concentric-square-shaped structure used for being connected to the peripheral side of the end of the cable bridge in a sleeving mode. The two guide rods are located on the two sides of the base correspondingly. Each guide rod comprises a rod body connected with the corresponding first sliding groove in a sliding mode, a rolling wheel installed on the rod body and a positioning screw detachably connected with the rod body. The number of the rollers is two, and the rollers are pivoted to the two ends of the rod body respectively. The positioning screw vertically penetrates into the base from the outside of the base and then is connected with the rod body. The four mounting bases are located at the ends of the rod body correspondingly. The mounting base is provided with a second sliding groove for the rolling wheels to roll. The requirement for mobility of the base is met, it is ensured that the base cannot be separated from the cable bridge, the installation stability of the expansion joint is guaranteed, and the loosening risk after long-term use is very low.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable bridge design technical field, especially a kind of expansion joint structure of cable bridge. BACKGROUND

[0002] Cable bridge is a kind of equipment specially used for cable wiring, and its application occasions are mostly factory, bridge, commercial building, supermarket, underground parking lot and other places. Through cable bridge, various cable lines can be integrated and wired, for example, in commercial building, it is often divided into strong current and weak current wiring. Considering the physical properties of thermal expansion and contraction, when laying out, a gap is reserved between the two adjacent cable bridges, and when the cable bridge expands due to temperature rise, a movable space is reserved for its extension direction to avoid the arching deformation of the two adjacent cable bridges due to mutual squeezing. Further, in order to protect the cable, an expansion joint is installed between the gap of the two adjacent cable bridges.

[0003] The traditional expansion joint of cable bridge mainly installs a U-shaped base between two cable bridges, and then sets a sliding groove at the end of the cable bridge, and the U-shaped base is bridged at the end of the two cable bridges by bolts, and the bolts cannot be tightened and locked, so that the cable bridge and the expansion joint can move relatively. The disadvantage of this traditional design is that since the bolts cannot be tightened and locked (once the bolts are locked, the two ends of the expansion joint will be squeezed by the expanded cable bridge and deformed, and it will also become a force transmission medium between the two cable bridges and cause the cable bridge to deform), the installation stability of the expansion joint cannot be guaranteed, and the bolts are easy to loosen after long-term use, causing the expansion joint to fall off. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides an expansion joint structure of cable bridge, which uses a guide rod with a roller to meet the mobility requirement of the base and ensure that the base will not be separated from the cable bridge, guarantee the installation stability of the expansion joint, and the risk of loosening after long-term use is very low.

[0005] An expansion joint structure of cable bridge comprises:

[0006] A base, which is a U-shaped groove structure; the two sides of the base are respectively provided with a first sliding groove;

[0007] A cover plate detachably installed on the base; the cover plate and the base form a hui-shaped structure for sleeving the outer circumferential side of the end of the cable bridge;

[0008] The guide rods are installed on the base; the number of the guide rods is two and they are respectively located on the two sides of the base; each guide rod comprises a rod body which is slidably connected with a first sliding groove, a roller which is installed on the rod body, and a positioning screw which is detachably connected with the rod body; the number of the rollers is two and they are respectively pivotally connected with the two ends of the rod body; the positioning screw is vertically penetrated into the base from the outside of the base and then connected with the rod body; and

[0009] The mounting seats of the guide rods are sleeved; the number of the mounting seats is four and they are respectively located on the ends of the rod body; the mounting seats are provided with second sliding grooves for the rollers to roll.

[0010] The above-mentioned cable bridge stretching joint structure, when in use, the base and the cover plate form a character-shaped structure which is sleeved on the outer circumferential side of the end of the cable bridge. The guide rods and the mounting seats make the base bridgeable between two cable bridges. Moreover, the two ends of the guide rod are provided with rollers which are rollingly connected with the mounting seats, so that when the rod body is penetrated into the base and the mounting seat, the two ends of the guide rod can slide relative to the cable bridge. The guide rod and the base are locked by the positioning screw, so that during the relative sliding between the guide rod and the cable bridge, the guide rod and the base will not be separated, further ensuring that the base and the cable bridge will not be separated. The above-mentioned design, by using the guide rod with the rollers, not only meets the requirement of the mobility of the base, but also ensures that the base will not be separated from the cable bridge, guarantees the installation stability of the stretching joint, and has a very low risk of loosening after long-term use.

[0011] In one of the embodiments, the top of the two sides of the base is respectively provided with a slot for the cover plate to be inserted. The detachable connection between the base and the cover plate is realized by using the slot-in plate structure, which is simple in structure and low in operation difficulty.

[0012] In one of the embodiments, the cover plate is a T-shaped plate body; the wider end of the cover plate is provided with a stopper which is bent in the vertical direction; the stopper and the base are locked by a detachable locking member. The T-shaped design and the stopper make the cover plate be able to limit the insertion depth when being inserted into the base, and the cover plate can be locked by the locking member.

[0013] In one of the embodiments, the locking member is a screw or a buckle.

[0014] In one of the embodiments, the guide rod further comprises a pad strip which is attached to the inner side of the rod body; the pad strip is located between the two rollers, one side of the pad strip is tightly attached to the rod body, and the other side of the pad strip is used to tightly attach to the outer side wall of the cable bridge. The pad strip is used to improve the connection tightness between the rod body and the base.

[0015] In one of the embodiments, the radial section of the rod body is semicircular; the two ends of the rod body are provided with notch portions, and the outer periphery of the roller protrudes to the outside of the notch portion. The notch portion is used to avoid the outer periphery of the roller, so as to avoid the interference of the end of the rod body to the rollingly connected relationship between the roller and the second sliding groove.

[0016] In one of the embodiments, the second sliding groove is provided with an arc segment and a straight segment; the arc segment matches the arc surface of the rod body, and the straight segment is in abutment with the roller. The arc segment is used for limiting the sliding track of the rod body, and the straight segment is used for the roller to roll and walk. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A perspective view of the expansion joint structure of the cable bridge shown in the embodiment of the utility model;

[0018] Figure 2 A perspective view of the base in the expansion joint structure of the cable bridge shown in the embodiment of the utility model; Figure 1

[0019] A perspective view of the guide rod in the expansion joint structure of the cable bridge shown in the embodiment of the utility model; Figure 3 Figure 2 A perspective view of the mounting seat in the expansion joint structure of the cable bridge shown in the embodiment of the utility model;

[0020] Figure 4 Figure 2 A perspective view of the cover plate in the expansion joint structure of the cable bridge shown in the embodiment of the utility model;

[0021] Figure 5 A use state diagram of the expansion joint structure of the cable bridge shown in the embodiment of the utility model; Figure 4

[0022] A use state diagram of the expansion joint structure of the cable bridge shown in the embodiment of the utility model; Figure 6 Figure 2 A use state diagram of the expansion joint structure of the cable bridge shown in the embodiment of the utility model;

[0023] Figure 7 Figure 2 A use state diagram of the expansion joint structure of the cable bridge shown in the embodiment of the utility model;

[0024] Figure 8 A use state diagram of the expansion joint structure of the cable bridge shown in the embodiment of the utility model; Figure 1

[0025] A use state diagram of the expansion joint structure of the cable bridge shown in the embodiment of the utility model; Figure 9 Figure 8 A use state diagram of the expansion joint structure of the cable bridge shown in the embodiment of the utility model;

[0026] The meanings of the reference signs in the drawings are as follows:

[0027] 100 - expansion joint structure of the cable bridge;

[0028] 10 - base, 11 - first sliding groove, 12 - slot;

[0029] 20 - cover plate, 21 - stop, 22 - locking piece;

[0030] ​​​​​30 - guide rod, 31 - rod body, 311 - notch portion, 32 - roller, 33 - set screw, 34 - pad strip

[0031] 40 - mounting seat, 41 - second sliding groove, 411 - arc segment, 412 - straight segment

[0032] 200 - cable bridge. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0036] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0039] like Figures 1 to 9 As shown, it is a cable tray expansion joint structure 100 of one embodiment of the present utility model.

[0040] like Figure 1 and Figure 2 As shown, the expansion joint structure 100 of the cable tray includes: a base 10, a cover plate 20 detachably mounted on the base 10, a guide rod 30 mounted on the base 10, and a mounting seat 40 for connecting the guide rod 30. The base 10 and the cover plate 20 together form a collar structure fitted at the joint of two cable trays. The mounting seat 40 is used to install on the end of the cable tray and is slidably connected to the guide rod 30, thereby allowing the base 10 to bridge between the two cable trays.

[0041] The following text, combined with Figures 1 to 9 As shown, the expansion joint structure 100 of the cable tray described above will be further explained.

[0042] like Figure 3 As shown, the base 10 has a U-shaped groove structure, and first sliding grooves 11 are provided on both sides of the base 10. Figure 3 As shown, in this embodiment, the middle area on both sides of the base 10 is provided with an outward protrusion, which forms a first groove 11 with a semi-circular cross section.

[0043] Combination Figure 1 and Figure 2 As shown, the cover plate 20 and the base 10 form a U-shaped structure for fitting onto the outer periphery of the end of the cable tray.

[0044] There are various combinations of the cover plate 20 and the base 10. For example, as shown in Figure 1 , Figure 3 , and Figure 7 , in the present embodiment, the top of each side of the base 10 is provided with a slot 12 for the insertion of the cover plate 20. The detachable connection between the base 10 and the cover plate 20 is achieved by the insertion plate structure, which is simple in structure and low in operation difficulty.

[0045] Further, as shown in Figure 1 , Figure 3 , and Figure 7 , the cover plate 20 is a T-shaped plate body. The wider end of the cover plate 20 is provided with a stop portion 21 bent in the vertical direction. The stop portion 21 and the base 10 are locked by a detachable locking member 22. The T-shaped design and the stop portion 21 enable the insertion depth of the cover plate 20 to be limited when the cover plate 20 is inserted into the base 10, and the cover plate 20 can be locked by the locking member 22.

[0046] In order to facilitate operation, as shown in Figure 1 and Figure 2 , in the present embodiment, the locking member 22 is a screw. In other embodiments, the locking member 22 can also be a buckle.

[0047] As shown in Figure 1 and Figure 2 , the number of guide rods 30 is two and they are located on the two sides of the base 10. As shown in Figure 4 and Figure 5 , each guide rod 30 includes a rod body 31 slidably connected to the first sliding groove 11, a roller 32 mounted on the rod body 31, and a positioning screw 33 detachably connected to the rod body 31. The number of rollers 32 is two and they are respectively pivoted to the two ends of the rod body 31. The positioning screw 33 is vertically inserted into the base 10 from the outside of the base 10 and connected to the rod body 31.

[0048] Since in the present embodiment, the rod body 31 and the base 10 need to be fastened by the positioning screw 33, as shown in Figure 5 , in the present embodiment, the guide rod 30 can further include a gasket 34 attached to the inner side of the rod body 31. The gasket 34 is located between the two rollers 32, and one side of the gasket 34 is tightly attached to the rod body 31, and the other side of the gasket 34 is used to tightly attach to the outer side wall of the cable bridge. The gasket 34 is used to improve the connection tightness between the rod body 31 and the base 10.

[0049] As shown in Figure 1 and Figure 2 , the number of mounting seats 40 is four and they are respectively located at the ends of the rod body 31. The mounting seat 40 is provided with a second sliding groove 41 for the roller 32 to roll. As shown in Figure 1 and Figure 8As shown, in this embodiment, in order to facilitate factory and transportation, the mounting seat 40 is fixed on the cable bridge 200 by bolts. In other embodiments, the mounting seat 40 can be welded to the cable bridge before factory or at the construction site.

[0050] In addition, as Figure 4 and Figure 5 shown, in this embodiment, the radial cross section of the rod body 31 is semicircular. The rod body 31 is provided with a notch portion 311 at both ends, and the outer periphery of the roller 32 protrudes outside the notch portion 311. The notch portion 311 is used to avoid the outer periphery of the roller 32, so as to avoid the interference of the end of the rod body 31 to the rolling connection between the roller 32 and the second sliding groove 41.

[0051] Further, as Figure 6 shown, the second sliding groove 41 is provided with an arc segment 411 and a straight line segment 412. The arc segment 411 matches the arc surface of the rod body 31, and the straight line segment 412 abuts against the roller 32. The arc segment 411 is used to limit the sliding track of the rod body 31, and the straight line segment 412 is used for the roller 32 to roll and walk.

[0052] Working principle:

[0053] As Figure 8 and Figure 9 shown, in use, the base 10 and the cover plate 20 form a H-shaped structure which is sleeved on the outer periphery side of the end of the cable bridge 200. The base 10 can be bridged between two cable bridges 200 by means of the guide rod 30 and the mounting seat 40. Moreover, the two ends of the guide rod 30 are provided with the roller 32 which is in rolling connection with the mounting seat 40, so that when the rod body 31 penetrates into the base 10 and the mounting seat 40, the two ends of the guide rod 30 can slide relative to the cable bridge 200. And the guide rod 30 and the base 10 are locked by the positioning screw 33, so that during the relative sliding process between the guide rod 30 and the cable bridge 200, the guide rod 30 and the base 10 will not be separated, further ensuring that the base 10 and the cable bridge 200 will not be separated.

[0054] As Figure 9 shown, in assembly, the base 10 is first installed from bottom to top between the two cable bridges 200, then the guide rod 30 is inserted from one of the mounting seats 40 and pushed to the other side, then the base 10 and the guide rod 30 are locked together by the positioning screw 33, and finally the cover plate 20 is inserted from the side to the top of the base 10, and then fixed by the locking piece 22.

[0055] The telescopic joint structure 100 of the cable bridge uses the guide rod 30 with the roller 32, meets the requirement of the mobility of the base 10, ensures that the base 10 cannot be separated from the cable bridge, guarantees the installation stability of the telescopic joint, and has low risk of loosening after long-term use.

[0056] The technical features of the above embodiments can be combined in any manner, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered as within the scope of the present disclosure.

[0057] The above embodiments only express the preferred embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. An expansion joint structure for a cable tray, characterized in that, include: The base is a U-shaped groove structure; the base has a first sliding groove on each side. A cover plate that can be detachably installed on the base; the cover plate and the base form a U-shaped structure for fitting onto the outer periphery of the end of the cable tray; A guide rod is mounted on the base; there are two guide rods, each located on one side of the base; each guide rod includes: a rod body slidably connected to the first slide groove, a roller mounted on the rod body, and a positioning screw detachably connected to the rod body; there are two rollers, each pivotally connected to one end of the rod body; the positioning screw passes vertically into the base from the outside and connects to the rod body; and A mounting base for fitting the guide rod; there are four mounting bases, each located at the end of the rod body; the mounting base is provided with a second groove for the roller to roll.

2. The expansion joint structure of the cable tray according to claim 1, characterized in that, The top of each side of the base is provided with a slot for inserting the cover plate.

3. The expansion joint structure of the cable tray according to claim 2, characterized in that, The cover plate is a T-shaped plate; the wider end of the cover plate is provided with a stop portion that bends vertically; the stop portion is locked to the base by a detachable locking device.

4. The expansion joint structure of the cable tray according to claim 3, characterized in that, The locking component is a screw or a clip.

5. The expansion joint structure of the cable tray according to claim 1, characterized in that, The guide rod further includes a pad strip attached to the inner side of the rod body; the pad strip is located between the two rollers, and one side of the pad strip is in close contact with the rod body, while the other side of the pad strip is used to be in close contact with the outer wall of the cable tray.

6. The expansion joint structure of the cable tray according to claim 1, characterized in that, The radial cross-section of the rod is semi-circular; both ends of the rod are provided with notches, and the outer periphery of the roller protrudes to the outside of the notches.

7. The expansion joint structure of the cable tray according to claim 6, characterized in that, The second groove has an arc-shaped section and a straight section; the arc-shaped section matches the arc-shaped surface of the rod, and the straight section abuts against the roller.

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