Combined ladder type cable bridge

Abstract

The utility model relates to the technical field of cable bridges, and discloses a combined ladder type cable bridge, which comprises two groups of ladder type bridges, a connecting mechanism is arranged between the two groups of ladder type bridges, the connecting mechanism comprises a connecting frame, when the ladder type bridges are combined and connected, firstly, the two groups of ladder type bridges are respectively inserted into the connecting frame, and then the ladder type bridges are connected with the connecting frame. When the two groups of ladder-type bridge frames are in contact with each other and the mounting holes of the ladder-type bridge frames and the positioning holes of the connecting frames are located on the same vertical line, the plurality of rotating rods are respectively rotated, the two-way screw rods synchronously rotate, the two groups of connecting plates do reverse linear motion along the screw rods, and the positioning clamping columns fixed on the connecting plates also move along with the movement of the connecting plates; when the ladder-type bridge is assembled and connected with the connecting frame, the ladder-type bridge and the connecting frame are firmly installed until the positioning clamping columns at the upper end and the lower end accurately penetrate through the corresponding positioning holes and the mounting holes, the connecting mode effectively prevents the phenomenon that the connecting position is loosened and even falls off due to long-time use, and the stability and the reliability of combined connection of the ladder-type bridge are improved.

Description

Technical Field

[0001] This utility model relates to the field of cable tray technology, and in particular to a combined ladder-type cable tray. Background Technology

[0002] Cable trays are classified into trough type, tray type, ladder type, and mesh type structures. They consist of supports, brackets, and installation accessories. Cable trays inside buildings can be installed independently or laid on various building and pipe rack supports. They should be characterized by simple structure, beautiful appearance, flexible configuration, and convenient maintenance. All parts must be galvanized. Cable trays installed outdoors are also available.

[0003] The applicant discovered through a search that a Chinese patent discloses "A Combined Ladder-Type Cable Tray," with publication (announcement) number "CN221126814U." This patent mainly includes a first cable tray side plate, a second cable tray side plate, a placement frame, a transmission roller, and a splicing component. This utility model, through the design of the splicing component, enables the first and second cable tray side plates to be quickly fastened together during splicing, improving splicing efficiency. However, the aforementioned prior art uses only pins and pin holes for cable tray connection, resulting in unstable connections. This connection method mainly relies on the friction of the pins and a small contact area to resist external forces. Under the action of lateral forces, the connection parts of the cable tray may loosen, affecting the stability of the entire cable tray system and threatening the safety of the cables. Therefore, we propose a combined ladder-type cable tray. Utility Model Content

[0004] The purpose of this utility model is to provide a combined ladder-type cable tray to solve the problem that the existing technology only uses plug pins to install the cable tray, which results in an unstable connection. This connection method mainly relies on the friction of the plug and the small contact area to resist external forces. Under the action of lateral forces, the connection parts of the cable tray may loosen, affecting the stability of the entire cable tray system and thus threatening the safety of the cables.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined ladder-type cable tray, comprising two sets of ladder-type cable trays, with a connecting mechanism between the two sets of ladder-type cable trays. The connecting mechanism includes a connecting frame, with a bidirectional screw connected to the connecting frame through a cavity. The bidirectional screw is connected to a positioning pin through a connecting plate. A rotating rod is fixedly installed at the upper end of the bidirectional screw and at the top of the connecting frame. Two sets of positioning holes are provided through the left and right end surfaces of the connecting frame.

[0006] As a preferred embodiment, both ends of the two sets of ladder-type cable trays are provided with mounting holes, and both sets of ladder-type cable trays are provided with limiting mechanisms inside.

[0007] As a preferred embodiment, the bidirectional screw is provided in four sets, which are rotatably connected to both sides of the surface of the connecting frame and located inside the cavity, and the connecting plate is provided in two sets, which are threadedly connected to the upper and lower circumferential surfaces of the bidirectional screw.

[0008] As a preferred embodiment, the positioning pins are provided in two sets and are respectively fixedly installed on the opposite side of the two sets of connecting plates.

[0009] As a preferred embodiment, the limiting mechanism includes a lower plate and an upper plate. The lower plate is fixedly installed between the left and right surfaces inside the ladder-type cable tray. The upper plate is located directly above the lower plate and is slidably connected to the inside of the ladder-type cable tray. Multiple sets of lower clamping plates and upper clamping plates distributed at equal intervals are fixedly installed on opposite sides of the lower plate and the upper plate, respectively.

[0010] As a preferred embodiment, threaded rods are rotatably connected to both ends of the upper surface of the upper plate. The threaded rods are threadedly connected to the upper end of the ladder-type cable tray. An adjusting block is fixedly installed on the top of the threaded rods. Protrusions are fixedly connected to both ends of the opposite side surfaces of the lower plate and the upper plate.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. By setting up a connecting mechanism, when assembling ladder cable trays, first insert the two sets of ladder cable trays into the connecting frame. When the two sets of ladder cable trays are in contact with each other and their mounting holes are on the same vertical line as the positioning holes of the connecting frame, rotate multiple rotating rods. The bidirectional screws rotate synchronously, and the two sets of connecting plates will move in opposite directions along the screws. As the connecting plates move, the positioning pins fixed on them also move until the positioning pins at the upper and lower ends accurately pass through the corresponding positioning holes and mounting holes, thus firmly completing the installation between the ladder cable trays and the connecting frame. This connection method effectively prevents the connection from loosening or even falling off due to long-term use, greatly improving the stability and reliability of the ladder cable tray assembly connection.

[0013] 2. By setting a limiting mechanism, after the connection between the ladder-type cable trays is completed, the cables need to pass evenly through the lower clamping plate. Then, by rotating the adjusting blocks on both sides, the threaded rod will move downward along the internal structure of the ladder-type cable tray. As the threaded rod moves downward, it will drive the upper plate connected to it to move downward as well, thereby driving the upper clamping plate to move downward as well. Through the mutual cooperation and close coordination between the upper and lower clamping plates, the cable can be precisely and effectively limited. In this way, the messy situation of cables tangling together can be effectively avoided, thereby greatly reducing the many unnecessary troubles and troubles caused by cable tangling in subsequent maintenance work. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the ladder-type cable tray structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the right-side cross-sectional structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the connection mechanism structure of this utility model;

[0018] Figure 5 This is one of the structural schematic diagrams of the connecting mechanism of this utility model;

[0019] Figure 6 This is the second schematic diagram of the connecting mechanism of this utility model;

[0020] Figure 7 This is a schematic diagram of the limiting mechanism of this utility model.

[0021] In the diagram: 1. Ladder-type cable tray; 2. Connecting mechanism; 3. Limiting mechanism; 4. Mounting hole; 201. Connecting frame; 202. Cavity; 203. Bidirectional screw; 204. Rotating rod; 205. Positioning hole; 206. Connecting plate; 207. Positioning pin; 301. Lower plate; 302. Upper plate; 303. Lower clamping piece; 304. Upper clamping piece; 305. Protrusion; 306. Threaded rod; 307. Adjusting block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0023] Please see the appendix Figure 1 - Appendix Figure 6 A combined ladder-type cable tray includes two sets of ladder-type cable trays 1, with a connecting mechanism 2 between the two sets of ladder-type cable trays 1. The connecting mechanism 2 includes a connecting frame 201, with a bidirectional screw 203 connected to the connecting frame 201 through a cavity 202. The bidirectional screw 203 is connected to a positioning pin 207 through a connecting plate 206. A rotating rod 204 is fixedly installed at the upper end of the bidirectional screw 203 and at the top of the connecting frame 201. Two sets of positioning holes are drilled through the left and right ends of the connecting frame 201. 205. Mounting holes 4 are provided through the two ends of the two sets of ladder-type cable trays 1. Limiting mechanisms 3 are provided inside the two sets of ladder-type cable trays 1. Four sets of bidirectional screws 203 are provided and are rotatably connected to both sides of the surface of the connecting frame 201 and located inside the cavity 202. Two sets of connecting plates 206 are provided and are threaded to the upper and lower circumferential surfaces of the bidirectional screws 203. Two sets of positioning pins 207 are provided and are fixedly installed on the opposite side of the two sets of connecting plates 206.

[0024] The connecting frame 201 adopts a structure with a base plate and convex frames at both ends. A cavity 202 is formed between the convex frames and the base plate. The bottom of the ladder-type cable tray 1 is installed on the bottom surface of the connecting frame 201, and its upper end is placed on the upper convex frame of the connecting frame 201. The bottom of the ladder-type cable tray 1 is completely engaged with the bottom surface of the convex frame. After installation, it has strong stability. The mounting holes 4 and positioning holes 205 on the ladder-type cable tray 1 are the same size. When two sets of ladder-type cable trays 1 are spliced ​​together, the mounting holes 4 and positioning holes 205 are on the same vertical line, which makes it easy for the positioning pins 207 to pass through, thereby completing the engagement connection. It is also easy to disassemble, improving the efficiency of installation and maintenance.

[0025] Specifically, when the ladder-type cable tray 1 needs to be combined and connected, the two sets of ladder-type cable trays 1 are inserted into the connecting frame 201 respectively until the two sets of ladder-type cable trays 1 are in contact and the mounting hole 4 and the positioning hole 205 are on the same vertical line. At this time, the multiple rotating rods 204 are rotated to drive the bidirectional screw 203 to rotate. The two sets of connecting plates 206 threaded on the surface of the bidirectional screw 203 move in opposite directions. The connecting plates 206 drive the positioning pins 207 to move until the positioning pins 207 at both ends pass through the positioning hole 205 and the mounting hole 4, thereby completing the installation of the ladder-type cable tray 1 and the connecting frame 201, avoiding the situation of loosening or falling off the connection due to long-term use. Example 2

[0026] Please see the appendix Figure 1 - Appendix Figure 3 and appendix Figure 7Furthermore, based on Embodiment 1, the limiting mechanism 3 includes a lower plate 301 and an upper plate 302. The lower plate 301 is fixedly installed between the left and right surfaces inside the ladder-type cable tray 1. The upper plate 302 is located directly above the lower plate 301 and is slidably connected to the inside of the ladder-type cable tray 1. Multiple sets of lower clamping plates 303 and upper clamping plates 304, which are distributed at equal intervals, are fixedly installed on the opposite side surfaces of the lower plate 301 and the upper plate 302, respectively. Threaded rods 306 are rotatably connected to both ends of the upper surface of the upper plate 302. The threaded rods 306 are threadedly connected to the upper end of the ladder-type cable tray 1. An adjusting block 307 is fixedly installed on the top of the threaded rods 306. Protrusions 305 are fixedly connected to both ends of the opposite side surfaces of the lower plate 301 and the upper plate 302.

[0027] When the upper plate 302 moves downward, the protrusions 305 on the upper plate 302 and the lower plate 301 come into contact with each other to prevent the upper plate 302 from pressing down too much and damaging the cable. When the upper clamping plate 304 moves downward, it may not be able to come into contact with the lower clamping plate 303. This depends on the thickness of the cable. This device can only limit the cable and cannot completely fix the cable.

[0028] Specifically, after the ladder-type cable trays 1 are connected, when the cable is laid inside the ladder-type cable tray 1, it passes evenly through the interior of the lower clamping plate 303. Then, the two side adjusting blocks 307 are rotated, and the threaded rod 306 moves downward inside the ladder-type cable tray 1, driving the upper plate 302 to move the upper clamping plate 304 downward. The cooperation between the upper clamping plate 304 and the lower clamping plate 303 limits the cable and prevents the cable from getting tangled together, which would cause trouble for maintenance.

[0029] Working principle of this utility model: This utility model is a combined ladder-type cable tray. When assembling and connecting the ladder-type cable trays 1, firstly, insert the two sets of ladder-type cable trays 1 into the connecting frame 201 respectively, until the two sets of ladder-type cable trays 1 are in contact and the mounting hole 4 and the positioning hole 205 are on the same vertical line. At this time, rotate multiple rotating rods 204 respectively, driving the bidirectional screw 203 to rotate. The two sets of connecting plates 206 threaded to the surface of the bidirectional screw 203 move in opposite directions, driving the positioning pin 207 to move through the connecting plates 206, until the upper... The positioning pins 207 at both ends pass through the positioning holes 205 and the mounting holes 4, thus completing the installation of the ladder-type cable tray 1 and the connecting frame 201. After the ladder-type cable trays 1 are connected, when the cable is laid inside the ladder-type cable tray 1, it passes evenly through the interior of the lower clamping plate 303. Then, the adjusting blocks 307 on both sides are rotated, and the threaded rod 306 moves downward inside the ladder-type cable tray 1, driving the upper plate 302 to move the upper clamping plate 304 downward. The cooperation between the upper clamping plate 304 and the lower clamping plate 303 limits the cable. At this point, the entire process is complete.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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. A combined ladder-type cable bridge comprising two ladder-type bridges (1), characterized in that: Two groups of connecting mechanisms (2) are arranged between the ladder type bridge (1), the connecting mechanism (2) includes connecting frame (201), the connecting frame (201) is connected with two-way screw rod (203) through cavity (202), the two-way screw rod (203) is connected with positioning clamping column (207) through connecting plate (206), the upper end of two-way screw rod (203) and the top of connecting frame (201) are fixedly installed with rotating rod (204), the left and right two ends of the surface of connecting frame (201) are both provided with two groups of positioning holes (205).

2. The combined ladder-type cable bridge according to claim 1, characterized in that: Two groups of mounting holes (4) are arranged on the surface of the two ends of the ladder type bridge (1), and the inside of the two groups of ladder type bridges (1) is provided with limiting mechanism (3).

3. The combined ladder-type cable bridge according to claim 1, characterized in that: The two-way screw rod (203) is provided with four groups, and is rotatably connected to the surface of the connecting frame (201) and located in the inside of the cavity (202), and the connecting plate (206) is provided with two groups and is threadedly connected to the upper and lower end circumferential surface of the two-way screw rod (203).

4. The combined ladder-type cable bridge according to claim 1, characterized in that: The positioning clamping column (207) is provided with two groups and is fixedly installed on the surface of the two groups of connecting plates (206) opposite sides.

5. The combined ladder-type cable bridge according to claim 2, characterized in that: The limiting mechanism (3) includes lower plate (301) and upper plate (302), the lower plate (301) is fixedly installed between the inside left and right side surfaces of the ladder type bridge (1), the upper plate (302) is arranged above the lower plate (301) and is slidably connected to the inside of the ladder type bridge (1), the opposite side surfaces of the lower plate (301) and the upper plate (302) are respectively fixedly installed with a plurality of lower clamping pieces (303) and upper clamping pieces (304) which are distributed at equal intervals.

6. A combined ladder-type cable tray according to claim 5, characterized in that: The upper surface of the upper plate (302) is rotatably connected with threaded rod (306) at both ends, the threaded rod (306) is threadedly connected to the inside of the upper end of the ladder type bridge (1), the top of the threaded rod (306) is fixedly installed with adjusting block (307), the opposite side surfaces of the lower plate (301) and the upper plate (302) are both fixedly connected with protruding block (305).

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