High-strength cable bridge cover plate fixing device convenient to install

Abstract

The utility model relates to the field of low-voltage power distribution systems, aims to solve the problems of complicated operation, high repair cost, difficulty in maintenance, short service life, unattractiveness, nonstandardization, high labor cost, long construction period and high safety risk in the prior art, and provides a high-strength cable bridge cover plate fixing device convenient to install, which comprises an L-shaped upper caliper and an L-shaped lower caliper, the upper caliper and the lower caliper are symmetrically distributed, and a long plate of the upper caliper and a long plate of the lower caliper are in lap joint in a sliding mode. A locking assembly used for locking the upper caliper and the lower caliper is arranged on the side, away from the upper caliper, of the lower caliper. An abutting assembly used for abutting against the bridge cover plate is arranged on the side, away from the lower caliper, of the upper caliper, and the abutting assembly is perpendicularly connected to the upper caliper and the lower caliper in a rotatable telescopic mode. The utility model has the beneficial effects of light weight, high strength, convenient installation and disassembly, simple and durable structure, low price, prolonged service life of the bridge, elimination of potential safety hazards, standard and beautiful bridge, low maintenance cost, and high cable maintenance and laying efficiency.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage power distribution systems, and in particular to a conveniently installed high-strength cable tray cover fixing device. Background Art

[0002] Cable trays are widely used in actual industrial applications, and their covers are mainly fixed in a "snap-on" manner. Due to factors such as frequent cable maintenance in the cable tray, too many cables placed, humid or corrosive environment, and external force damage, the cable tray covers are often corroded or broken due to the snaps, and the cable tray covers are deformed, resulting in hidden dangers such as loosening and falling off of the cable tray covers. This hazard is particularly serious when the cable tray is installed vertically. For passing inspectors, there are safety hazards such as being hit by objects; for cables, there is a serious reduction in the protection level, and the risk of cables being accidentally damaged by snakes, rats, mechanical forces, and other accidents is increased.

[0003] At present, the industry can use welding, riveting or binding to re-reinforce the cover plate. Among them, the arc or spark generated during the welding and riveting operation may cause damage to the insulation layer of the cables in the bridge, and this reinforcement method has the problems of complex operation, high repair cost, difficulty in later maintenance and short life; the binding method has the disadvantages of being unsightly, non-standard and difficult to maintain.

[0004] In summary, the above repair methods have many disadvantages, so they are generally not used. In order to enhance the image of modernization and standardization, enterprises generally adopt the method of directly replacing the cable tray. However, replacing the cable tray has problems such as high material and labor costs, long construction period, and high safety risks. Therefore, it is very necessary to design a high-strength cable tray cover fixing device. Utility Model Content

[0005] The utility model aims to provide a conveniently installed high-strength cable tray cover fixing device to solve the problems of complex operation, high repair cost, difficulty in later maintenance, short life, unsightly appearance, non-standardization, high labor cost, long construction period and high safety risk in the prior art.

[0006] The embodiment of the utility model is achieved as follows:

[0007] The embodiment of the utility model provides a conveniently installed high-strength cable tray cover fixing device, which includes an upper clamp and a lower clamp;

[0008] The upper caliper and the lower caliper are symmetrically distributed with each other, and both the upper caliper and the lower caliper are L-shaped components, and the long plate of the upper caliper and the long plate of the lower caliper are slidably overlapped with each other;

[0009] A locking assembly for locking the upper caliper and the lower caliper is provided on a side of the lower caliper away from the upper caliper;

[0010] A tightening assembly for tightening the bridge cover is provided on a side of the upper caliper away from the lower caliper. The tightening assembly is rotatably and telescopically connected vertically to the upper caliper and the lower caliper.

[0011] When in use, place the L-shaped upper caliper and the lower caliper on the top of the cable tray, adjust the width between the upper caliper and the lower caliper according to the width of the cable tray, and when adjusted appropriately, lock the upper caliper and the lower caliper by the locking assembly, and finally, tighten the cover plate onto the cable tray by the tightening assembly.

[0012] The embodiment disclosed a conveniently installed high-strength cable tray cover fixing device. Since the L-shaped upper clamp and the lower clamp are provided, the device is easy to clamp on the cable tray. Since a clamping assembly is provided, the cover is pressed conveniently, thereby making the conveniently installed high-strength cable tray cover fixing device have the beneficial effects of light weight, high strength, convenient installation and disassembly, simple and durable structure, low price, extended service life of the tray, elimination of safety hazards, standardization and beauty of the tray, low repair and maintenance cost, and high efficiency of cable inspection and laying.

[0013] Optionally: the upper caliper comprises a first short plate and a first long plate, and the first short plate and the first long plate are bent and formed integrally with each other;

[0014] The lower caliper comprises a second short plate and a second long plate, and the second short plate and the second long plate are bent and formed integrally with each other.

[0015] Such a configuration makes it easy to adapt to the cable tray cover. The short plates can be used to clamp the cable tray, and the long plates can be used to adjust the spacing between the short plates, so that the device can adapt to cable trays of various sizes and models.

[0016] Optionally: the outer ends of the first short plate and the second short plate are respectively provided with a first caliper barb and a second caliper barb, and the first caliper barb and the second caliper barb are respectively fixedly connected to the outer ends of the first short plate and the second short plate;

[0017] The first caliper barb is located on a side close to the first long plate, and the second caliper barb is located on a side close to the second long plate;

[0018] The first caliper barb and the second caliper barb are both wedge-shaped.

[0019] With such arrangement, the arrangement of the first caliper barb and the second caliper barb facilitates the insertion of the barbs into the bottom of the bridge frame, and plays the role of tightening and positioning.

[0020] Optionally: the locking assembly comprises an elliptical sleeve and a caliper tightening knob, and the caliper tightening knob is threadedly connected to the elliptical sleeve;

[0021] The first long board and the second long board are slidably overlapped with each other in the longitudinal direction, a single slide rail is provided in the longitudinal direction of the second long board, the single slide rail penetrates the second long board along the thickness of the second long board, and the locking assembly is located at the single slide rail and close to the second long board;

[0022] A through hole is opened in the middle of the above-mentioned first long plate, and the above-mentioned through hole penetrates the above-mentioned first long plate along the thickness direction of the above-mentioned first long plate. One end of the above-mentioned elliptical sleeve passes through the above-mentioned single slide rail and is fixedly connected to the end of the above-mentioned through hole away from the above-mentioned first short plate, and the above-mentioned elliptical sleeve is coaxially connected with the above-mentioned through hole.

[0023] In this way, when the first long plate and the second long plate slide against each other to adjust the relative distance between the first short plate and the second short plate, the caliper tightening knob is rotated so that the threaded rotation of the caliper tightening knob on the elliptical sleeve can be performed, thereby tightening the upper caliper and the lower caliper to each other, so that the upper caliper and the lower caliper do not slide relative to each other.

[0024] Optionally: the above-mentioned elliptical sleeve is compatible with the above-mentioned single slide rail.

[0025] Such arrangement makes it easy for the elliptical sleeve to slide in the single slide rail, thereby facilitating adjustment of the distance between the upper caliper and the lower caliper.

[0026] Optionally, the outer wall of the elliptical sleeve has an external thread, the inner diameter wall of the caliper tightening knob has an internal thread, and the caliper tightening knob is rotatably connected to the external thread of the elliptical sleeve via the internal thread.

[0027] Such an arrangement makes it easy for the caliper tightening knob to lock the upper caliper and the lower caliper, thereby preventing the upper caliper and the lower caliper from sliding against each other.

[0028] Optionally, the tightening assembly comprises a screw, the screw is threadedly connected in the elliptical sleeve and the through hole, and an end of the screw away from the second long plate passes through the elliptical sleeve and the through hole in sequence;

[0029] A base is provided at one end of the screw rod away from the first long plate, the screw rod is vertically fixedly connected to the base, a nylon washer is provided on the base, and the nylon washer is detachably connected to the side of the base away from the screw rod through bolts.

[0030] With such arrangement, by rotating the screw rod, the nylon washer on the base is brought into close contact with the bridge cover plate, and the cover plate is pressed and fixed on the bridge. Meanwhile, the nylon washer is made of flexible material and does not damage the cover plate and the paint on its surface.

[0031] Optionally: an end of the screw rod away from the second long plate has a hexagonal recessed hole, and the hexagonal recessed hole and the screw rod are integrally formed and coaxial with each other.

[0032] In this way, the configuration of the hexagonal recessed hole makes it easy for construction workers to insert a hexagonal wrench into the hexagonal recessed hole, thereby rotating the screw rod, which serves to tighten the nylon washer so that the bridge cover is pressed and fixed on the bridge.

[0033] Optionally, the first long board is further provided with a first double slide rail and a second double slide rail, the first double slide rail and the second double slide rail are parallel to each other, and both the first double slide rail and the second double slide rail penetrate the first long board along the thickness direction of the first long board;

[0034] The first double slide rail and the second double slide rail are located between the through hole and the first short plate;

[0035] The second long board has a first guide column and a second guide column on one side close to the first long board. The first guide column can be slidably limited in the first double slide rails, and the second guide column can be slidably limited in the second double slide rails.

[0036] With such arrangement, the double slide rails have guiding and limiting functions, ensuring that the upper caliper and the lower caliper can only be adjusted longitudinally in the vertical direction without rotation.

[0037] Optionally: a side of the first long board close to the second long board has a plurality of anti-slip protrusions, and the plurality of anti-slip protrusions are evenly distributed on the first long board.

[0038] With such arrangement, the plurality of anti-skid protrusions can increase the friction coefficient between the upper caliper and the lower caliper, thereby improving the locking connection strength between the upper caliper and the lower caliper, and preventing the caliper from loosening and slipping off randomly after locking.

[0039] Optionally, the single slide rail, the first double slide rail and the second double slide rail have holes that are offset from each other.

[0040] Such an arrangement effectively ensures the mechanical strength of the connection between the upper caliper and the lower caliper, reduces the weight of the device as much as possible, facilitates the installation and disassembly of the device, and reduces the additional load on the bridge.

[0041] Based on the above description, the utility model discloses a conveniently installed high-strength cable tray cover fixing device with the advantages of light weight, high strength, convenient installation and disassembly, simple and durable structure, low price, extended cable tray life, elimination of safety hazards, standardized and beautiful cable tray, low repair and maintenance cost, and high cable inspection and laying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 It is a first-view structural schematic diagram of a conveniently installed high-strength cable tray cover fixing device in an embodiment of the utility model;

[0044] Figure 2 A second perspective structural schematic diagram of a conveniently installed high-strength cable tray cover fixing device in an embodiment of the utility model;

[0045] Figure 3 A front view of a conveniently installed high-strength cable tray cover fixing device in an embodiment of the utility model

[0046] Figure 4 It is a side view of a conveniently installed high-strength cable tray cover fixing device in an embodiment of the utility model;

[0047] Figure 5 This is a schematic diagram of the structure of the lower caliper in the embodiment of the utility model;

[0048] Figure 6 It is a schematic structural diagram of the upper caliper in an embodiment of the utility model.

[0049] Icons: 1-upper caliper, 2-lower caliper, 3-locking assembly, 4-tightening assembly, 5-first short plate, 6-first long plate, 7-second short plate, 8-second long plate, 9-first caliper barb, 10-second caliper barb, 11-elliptical sleeve, 12-caliper tightening knob, 13-single slide rail, 14-through hole, 15-screw, 16-base, 17-nylon washer, 18-hexagonal recessed hole, 19-first double slide rail, 20-second double slide rail, 21-first guide column, 22-second guide column, 23-anti-slip protrusion. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] Example

[0053] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , This embodiment proposes a conveniently installed high-strength cable tray cover fixing device, including an upper clamp 1 and a lower clamp 2;

[0054] The upper caliper 1 and the lower caliper 2 are symmetrically arranged, and both the upper caliper 1 and the lower caliper 2 are L-shaped components, and the long plate of the upper caliper 1 and the long plate of the lower caliper 2 are slidably overlapped with each other;

[0055] A locking assembly 3 for locking the upper caliper 1 and the lower caliper 2 is provided on a side of the lower caliper 2 away from the upper caliper 1;

[0056] A tightening assembly 4 for tightening the bridge cover is provided on one side of the upper caliper 1 away from the lower caliper 2 . The tightening assembly 4 is rotatably and telescopically connected to the upper caliper 1 and the lower caliper 2 .

[0057] When in use, place the L-shaped upper caliper 1 and lower caliper 2 on the top of the cable tray, adjust the width between the upper caliper 1 and the lower caliper 2 according to the width of the cable tray, and when adjusted to the appropriate level, lock the upper caliper 1 and the lower caliper 2 through the locking assembly 3, and finally, tighten the cover plate onto the cable tray through the tightening assembly 4.

[0058] The embodiment disclosed a convenient installation high-strength cable tray cover fixing device, which is provided with an L-shaped upper clamp 1 and a lower clamp 2, so that the device is easy to clamp on the cable tray, and the clamping component 4 is provided to facilitate pressing the cover, thereby making the convenient installation high-strength cable tray cover fixing device have the beneficial effects of light weight, high strength, convenient installation and disassembly, simple and durable structure, low price, extended cable tray life, elimination of safety hazards, standardization and beauty of the cable tray, low repair and maintenance costs, and high cable repair and laying efficiency.

[0059] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The upper caliper 1 has a first short plate 5 and a first long plate 6, and the first short plate 5 and the first long plate 6 are bent into an integral part; the lower caliper 2 has a second short plate 7 and a second long plate 8, and the second short plate 7 and the second long plate 8 are bent into an integral part, which is convenient for adapting to the cable tray cover. The short plate can be used to clamp the cable tray, and the long plate can be used to adjust the spacing between the short plates, so that the device can adapt to cable trays of various sizes and models.

[0060] The outer ends of the first short plate 5 and the second short plate 7 are respectively provided with a first caliper barb 9 and a second caliper barb 10, and the first caliper barb 9 and the second caliper barb 10 are respectively fixedly connected to the outer ends of the first short plate 5 and the second short plate 7;

[0061] The first caliper barb 9 is located on the side close to the first long plate 6, and the second caliper barb 10 is located on the side close to the second long plate 8; the first caliper barb 9 and the second caliper barb 10 are both wedge-shaped, and the setting of the first caliper barb 9 and the second caliper barb 10 facilitates the insertion of the barbs into the bottom of the bridge frame and plays the role of tightening and positioning.

[0062] In this embodiment, the thinnest parts of the first caliper barb 9 and the second caliper barb 10 are larger than 1 mm, and are polished to avoid scratches.

[0063] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The locking assembly 3 comprises an elliptical sleeve 11 and a caliper tightening knob 12, and the caliper tightening knob 12 is threadedly connected to the elliptical sleeve 11;

[0064] The first long board 6 and the second long board 8 are slidably overlapped with each other in the longitudinal direction, and a single slide rail 13 is provided in the longitudinal direction of the second long board 8. The single slide rail 13 penetrates the second long board 8 along the thickness of the second long board 8, and the locking assembly 3 is located at the single slide rail 13 and close to the second long board 8;

[0065] A through hole 14 is provided in the middle of the first long plate 6, and the through hole 14 penetrates the first long plate 6 along the thickness direction of the first long plate 6. One end of the elliptical sleeve 11 passes through the single slide rail 13 and is fixedly connected to the end of the through hole 14 away from the first short plate 5, and the elliptical sleeve 11 and the through hole 14 are coaxially connected to each other. When the first long plate 6 and the second long plate 8 slide against each other to adjust the relative distance between the first short plate and the second short plate, the caliper tightening knob 12 is rotated so that the caliper tightening knob 12 is threadedly rotated on the elliptical sleeve 11, thereby tightening the upper caliper 1 and the lower caliper 2 to each other, so that the upper caliper 1 and the lower caliper 2 do not slide relative to each other.

[0066] The elliptical sleeve 11 is matched with the single slide rail 13 , so that it is convenient for the elliptical sleeve 11 to slide in the single slide rail 13 , thereby facilitating the adjustment of the distance between the upper caliper 1 and the lower caliper 2 .

[0067] The outer wall of the elliptical sleeve 11 has an external thread, and the inner diameter wall of the caliper tightening knob 12 has an internal thread. The caliper tightening knob 12 is rotatably connected to the external thread of the elliptical sleeve 11 through the internal thread, so that the caliper tightening knob 12 can lock the upper caliper 1 and the lower caliper 2 to prevent the upper caliper 1 and the lower caliper 2 from sliding against each other.

[0068] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The clamping assembly 4 has a screw 15, which is threadedly connected in the elliptical sleeve 11 and the through hole 14, and the end of the screw 15 away from the second long plate 8 passes through the elliptical sleeve 11 and the through hole 14 in sequence; the end of the screw 15 away from the first long plate 6 is provided with a base 16, and the screw 15 is vertically fixedly connected to the base 16. A nylon washer 17 is provided on the base 16, and the nylon washer 17 is detachably connected to the side of the base 16 away from the screw 15 by bolts. By rotating the screw 15, the nylon washer 17 on the base 16 is in close contact with the bridge cover, and the cover is pressed and fixed on the bridge. At the same time, the nylon washer 17 is made of flexible material and does not damage the cover and its surface paint.

[0069] The end of the screw rod 15 away from the second long plate 8 has a hexagonal recessed hole 18, which is integrally formed with the screw rod 15 and are coaxial with each other. The setting of the hexagonal recessed hole 18 makes it convenient for construction personnel to insert a hexagonal wrench into the hexagonal recessed hole 18, thereby rotating the screw rod 15, which serves to tighten the nylon washer 17 so that the bridge cover is pressed and fixed on the bridge.

[0070] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The first long plate 6 is also provided with a first double slide rail 19 and a second double slide rail 20, the first double slide rail 19 and the second double slide rail 20 are parallel to each other, and the first double slide rail 19 and the second double slide rail 20 both penetrate the first long plate 6 along the thickness direction of the first long plate 6; the first double slide rail 19 and the second double slide rail 20 are located between the through hole 14 and the first short plate 5; the second long plate 8 has a first guide column 21 and a second guide column 22 on one side close to the first long plate 6, the first guide column 21 can be slidably limited in the first double slide rail 19, and the second guide column 22 can be slidably limited in the second double slide rail 20, and the double slide rails have the functions of guiding and limiting, thereby ensuring that the upper caliper 1 and the lower caliper 2 can only be longitudinally adjusted in the vertical direction without rotating.

[0071] A side of the first long plate 6 close to the second long plate 8 has a plurality of anti-skid protrusions 23, and the plurality of anti-skid protrusions 23 are evenly distributed on the first long plate 6. The plurality of anti-skid protrusions 23 can increase the friction coefficient between the upper caliper 1 and the lower caliper 2, thereby improving the locking connection strength between the upper caliper 1 and the lower caliper 2, and avoiding loosening and slipping after locking.

[0072] In this embodiment, the plurality of anti-slip protrusions 23 are stamped structures, the side of the first long plate 6 close to the second long plate 8 is a stamped protrusion, and the side of the first long plate 6 away from the second long plate 8 is a stamped concave hole.

[0073] In other embodiments, a plurality of anti-skid welds may be welded on one side of the first long plate 6 close to the second long plate 8 to increase the friction between the first long plate 6 and the second long plate 8, thereby preventing the first long plate 6 from loosening and sliding off after being locked.

[0074] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 In this embodiment, the single slide rail 13 and the first double slide rail 19 and the second double slide rail 20 have holes staggered with each other, which effectively ensures the mechanical strength of the connection between the upper caliper 1 and the lower caliper 2, minimizes the weight of the device, facilitates the installation and disassembly of the device, and reduces the additional load on the bridge.

[0075] In this embodiment, the surface of the nylon washer 17 is processed with anti-skid threads (not shown in the figure), which has the function of increasing the friction with the surface of the cover plate.

[0076] In this embodiment, the distance between the upper caliper 1 and the lower caliper 2 can be adjusted by the first double slide rail 19, the second double slide rail 20 and the single slide rail 13, so as to facilitate the insertion of the first caliper barb 9 and the second caliper barb 10 at the tail of the caliper into the bottom of the bridge. After the first caliper barb 9 and the second caliper barb 10 are inserted, the caliper fastening knob 12 is tightened so that the upper caliper 1 and the lower caliper 2 firmly clamp the bridge; then, by inserting the hexagonal wrench into the hexagonal recess 18 of the screw 15, the screw 18 is rotated by turning the hexagonal wrench, so that the nylon washer 17 is in close contact with the bridge cover, and the cover is pressed and fixed on the bridge.

[0077] In this embodiment, the main body of the device is made of 3mm thick galvanized steel plate and 40mm wide. The single slide rail 13, the first double slide rail 19 and the second double slide rail 20 adopt a staggered opening method. Under the premise of ensuring sufficient mechanical strength of the device, the weight of the device is reduced as much as possible to facilitate installation and disassembly and reduce the additional load on the bridge.

[0078] In this embodiment, special stripes (not shown in the figure) are designed on the inner surfaces of the nylon washer 17, the upper caliper 1 and the lower caliper 2 to increase friction, which can maximize the practicality and durability of the device.

[0079] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , the specific use principle of a conveniently installed high-strength cable tray cover fixing device:

[0080] First, place the device on the top of the cable tray, and pull the first long plate 6 of the upper caliper 1 and the second long plate 8 of the lower caliper 2 to make the first long plate 6 and the second long plate 8 slide against each other. When the first long plate 6 and the first short plate at the end of the second long plate 8 fit the side of the cable tray, the first caliper barb 9 and the second caliper barb 10 are inserted into the bottom of the tray and take on the functions of tightening and positioning. Then, rotate the caliper tightening knob 12 on the elliptical sleeve 11 to make the first long plate 6 of the upper caliper 1 and the second long plate 8 of the lower caliper 2 fit closer to each other, so as to achieve mutual locking of the upper caliper 1 and the lower caliper 2. Finally, rotate the screw 15 so that the spiral rotation of the screw 15 extends toward the direction of the cable tray, and the nylon washer 17 at the front end of the screw 15 is in close contact with the tray cover, and the cover is pressed and fixed on the tray.

[0081] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A convenient installation high-strength cable tray cover fixing device, Features: Includes upper caliper and lower caliper; The upper caliper and the lower caliper are symmetrically distributed with each other, and both the upper caliper and the lower caliper are L-shaped components, and the long plate of the upper caliper and the long plate of the lower caliper are slidably overlapped with each other; A locking assembly for locking the upper caliper and the lower caliper is provided on a side of the lower caliper away from the upper caliper; A tightening assembly for tightening the bridge cover plate is provided on a side of the upper caliper away from the lower caliper. The tightening assembly is rotatably and telescopically connected to the upper caliper and the lower caliper vertically.

2. A conveniently installed high-strength cable tray cover fixing device according to claim 1, Features: The upper caliper comprises a first short plate and a first long plate, wherein the first short plate and the first long plate are integrally bent and formed; The lower caliper comprises a second short plate and a second long plate, and the second short plate and the second long plate are bent and formed integrally with each other.

3. A conveniently installed high-strength cable tray cover fixing device according to claim 2, Features: The outer ends of the first short plate and the second short plate are respectively provided with a first caliper barb and a second caliper barb, and the first caliper barb and the second caliper barb are respectively fixedly connected to the outer ends of the first short plate and the second short plate; The first caliper barb is located on a side close to the first long plate, and the second caliper barb is located on a side close to the second long plate; The first caliper barb and the second caliper barb are both wedge-shaped.

4. A conveniently installed high-strength cable tray cover fixing device according to claim 2, Features: The locking assembly comprises an elliptical sleeve and a caliper tightening knob, wherein the caliper tightening knob is threadedly connected to the elliptical sleeve; The first long board and the second long board are slidably overlapped with each other in the longitudinal direction, a single slide rail is provided in the longitudinal direction of the second long board, the single slide rail penetrates the second long board along the thickness of the second long board, and the locking assembly is located at the single slide rail and close to the second long board; A through hole is opened in the middle of the first long plate, and the through hole penetrates the first long plate along the thickness direction of the first long plate. One end of the elliptical sleeve passes through the single slide rail and is fixedly connected to the end of the through hole away from the first short plate, and the elliptical sleeve is coaxially connected to the through hole.

5. A conveniently installed high-strength cable tray cover fixing device according to claim 4, Features: The elliptical sleeve is adapted to the single slide rail.

6. A conveniently installed high-strength cable tray cover fixing device according to claim 4, Features: The outer wall of the elliptical sleeve has an external thread, the inner diameter wall of the caliper tightening knob has an internal thread, and the caliper tightening knob is rotatably connected to the external thread of the elliptical sleeve through the internal thread.

7. A conveniently installed high-strength cable tray cover fixing device according to claim 4, Features: The abutting assembly comprises a screw, the screw is threadedly connected in the elliptical sleeve and the through hole, and an end of the screw away from the second long plate passes through the elliptical sleeve and the through hole in sequence; A base is provided at one end of the screw rod away from the first long plate, the screw rod is vertically fixedly connected to the base, a nylon washer is provided on the base, and the nylon washer is detachably connected to the side of the base away from the screw rod through bolts.

8. A conveniently installed high-strength cable tray cover fixing device according to claim 7, Features: The end of the screw rod away from the second long plate has a hexagonal recessed hole, and the hexagonal recessed hole and the screw rod are integrally formed and coaxial with each other.

9. A conveniently installed high-strength cable tray cover fixing device according to claim 4, Features: The first long board is also provided with a first double slide rail and a second double slide rail, the first double slide rail and the second double slide rail are parallel to each other, and both the first double slide rail and the second double slide rail penetrate the first long board along the thickness direction of the first long board; The first double slide rail and the second double slide rail are located between the through hole and the first short plate; The second long board has a first guide column and a second guide column on one side close to the first long board. The first guide column can be slidably limited in the first double slide rails, and the second guide column can be slidably limited in the second double slide rails.

10. A convenient installation high-strength cable tray cover fixing device according to claim 2, Features: A side of the first long board close to the second long board has a plurality of anti-slip protrusions, and the plurality of anti-slip protrusions are evenly distributed on the first long board.

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