Sensor support for cable trench

Abstract

The invention discloses a sensor support for a cable trench, and belongs to the technical field of cable supports, the sensor support comprises a first vertical rod, a weighing sensor, a fixing plate and a first supporting arm, and the first vertical rod and the first supporting arm form downward pulling force on the weighing sensor. Through the arrangement of the first vertical rod, the first supporting arm, the weighing sensor and the fixing plate, the weighing sensor can monitor the weight borne by the first supporting arm, and when a support in the cable groove falls off and a top cover of the cable groove is smashed by an external heavy object, the weighing sensor on the sensor support can measure the weight change and give an alarm, so that the safety of the cable groove is improved. The normal operation of the cable is effectively protected; the cable trench early warning device can perform early warning on fire in the cable trench and accumulated water in the cable trench, and after the alarm, workers can conveniently and quickly arrive at the site, so that the safe operation of the cable is ensured.

Description

Technical Field

[0001] The invention belongs to the field of cable supports, and in particular relates to a sensor support for a cable trench. Background Art

[0002] The cable trench is an underground pipeline for laying power or communication cable facilities, and is also the enclosure structure of the laid cable facilities. When the cable is laid in the cable trench, it is usually supported by a bracket. The bracket can be set up in multiple layers on the side wall of the cable trench, and multiple cables are arranged in layers. The existing cable trench bracket can only play a supporting role. If some brackets fall off, the staff cannot find it in time. They can only find it by opening the top cover of the cable trench and checking it section by section. The falling of the bracket can easily cause damage to the cable, which is not conducive to the safe operation of the cable. At the same time, since some cable trenches are arranged in the field, sometimes external heavy objects will fall and break the top cover of the cable trench and enter the cable trench. At this time, it is not easy for the staff to find it, which brings hidden dangers to the safe operation of the cable. Summary of the invention

[0003] In view of the above problems existing in the prior art, the technical problem to be solved by the present invention is to provide a sensor bracket for a cable trench that can monitor the bracket falling off in the cable trench.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0005] A sensor bracket for a cable trench comprises a first vertical pole, a weighing sensor connected to the first vertical pole, a fixing plate connected to the weighing sensor and used for connecting to the side wall of the cable trench, and a first supporting arm connected to the first vertical pole. The first vertical pole and the first supporting arm form a downward pulling force on the weighing sensor.

[0006] Furthermore, a first connecting bolt is provided on the fixing plate, and a first connecting screw hole corresponding to the first connecting bolt is provided on the first vertical pole. When the first vertical pole is connected to the fixing plate through the first connecting bolt, the weighing sensor is no longer subjected to downward pulling force.

[0007] Furthermore, a connecting piece is provided on the first vertical pole, and a first through hole is provided on the connecting piece.

[0008] Furthermore, a buffer pad is connected to the back side of the first vertical pole.

[0009] Furthermore, a temperature sensor is provided on the first vertical pole.

[0010] Furthermore, a liquid level switch is provided at the lower end of the first vertical pole.

[0011] Furthermore, a first socket electrically connected to the weighing sensor, the temperature sensor and the liquid level switch is provided on the first vertical pole.

[0012] Furthermore, more than one first supporting arm is provided, and the first supporting arm is detachably connected to the first vertical pole.

[0013] Furthermore, more than one first connecting bolt is provided.

[0014] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0015] 1. By setting the first upright pole, the first bracket, the weighing sensor and the fixing plate, the weighing sensor can monitor the weight carried on the first bracket. When a bracket falls off in the cable trench, the weighing sensor on the adjacent sensor bracket can measure the weight change and generate an alarm, which is convenient for the staff to find the bracket falling off and effectively protect the normal operation of the cable;

[0016] 2. When the top cover of the cable trench is damaged by an external heavy object, the external heavy object falls into the cable trench and presses on the bracket. The weighing sensor on the sensor bracket can measure the weight change and sound an alarm, making it easy for the staff to find that there is a heavy object invading the cable trench, effectively protecting the normal operation of the cable;

[0017] 3. The temperature sensor and liquid level switch are installed on the first pole, which can give early warning of fire in the cable trench and water accumulation in the cable trench. After the alarm, it is also convenient for the staff to quickly arrive at the scene to ensure the safe operation of the cable;

[0018] 4. A first connecting bolt is provided, which can be selectively connected to the first vertical pole to take the weighing sensor out of use. The weighing sensor can be put into or out of use according to the needs of the site, and it is convenient to replace the weighing sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the structure of a sensor bracket according to an embodiment of the present invention;

[0020] Figure 2 2 is a schematic diagram of the first supporting arm structure in the embodiment;

[0021] Figure 3 This is a schematic diagram of the front structure of the first upright pole, the weighing sensor and the fixing plate of the embodiment;

[0022] Figure 4 It is a schematic diagram of the structure of the sensor bracket in the embodiment in the usage state. DETAILED DESCRIPTION

[0023] The present invention is further illustrated below in conjunction with specific examples. The examples are implemented based on the technical solutions of the present invention. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0024] like Figure 1 and Figure 3 As shown, a sensor bracket for a cable trench is used to be installed in a cable trench 9. The cross-section of the cable trench 9 is U-shaped. The cable trench 9 adopts an existing reinforced concrete cable trench. A steel frame is preset in the mold, and then concrete is poured. After curing and demolding, it is formed. When in use, the upper cover is provided with a top cover. The cable trench 9 includes a first side wall 91, a second side wall 92 and a bottom plate 93. The sensor bracket includes a first vertical pole 1, a weighing sensor 2, a fixing plate 3 and a first supporting arm 4. The fixing plate 3 is arranged perpendicular to the first side wall 91. First connecting plates 32 are provided on both sides of the fixing plate 3. The first connecting plate 32 is connected to the first side wall 91 by expansion bolts 33. The fixing plate 3 is fixed to the upper part of the first side wall 91 by expansion bolts. The weighing sensor 2 is connected to the fixed plate 3. The weighing sensor 2 adopts the existing S-type weighing sensor. The upper end of the weighing sensor 2 is connected to the fixed plate 3 through the first supporting bolt 21, and the lower end of the weighing sensor 2 is connected to the top of the first vertical pole 1. The top of the first vertical pole 1 is provided with a top plate 11, and the top plate 11 is provided with a first threaded column. The first threaded column matches the threaded hole at the lower end of the weighing sensor 2, so that the weighing sensor 2 is threadedly connected to the top plate 11.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, the first support arm 4 is connected to the first vertical pole 1, and three first support arms 4 are provided (the number of first support arms 4 can be more as needed), and the three first support arms 4 are arranged equidistantly up and down, and the first support arm 4 includes a first support rod 41 and a first support plate 42 arranged perpendicular to the first support rod 41, and a row of first adjustment holes 102 are provided in the middle position of the front side of the first vertical pole 1, and the support arm bolts 43 match the first adjustment holes 102, and the first support plate 42 is detachably connected to the first vertical pole 1 through the upper and lower support arm bolts 43, and the height of the first support arm 4 is adjusted by connecting the first adjustment holes 102 of different heights. After connection, the first support rod 41 is perpendicular to the first vertical pole 1, and the upper end surface of the first support rod 41 is used to support cables, and multiple cables are laid along the length direction of the cable trench 9. The first support rod 41 supports multiple cables from below, and first support arms 4 of different heights are used to support multiple cables of different heights.

[0026] like Figure 1 and Figure 4As shown, a buffer pad 5 is connected to the back of the first vertical pole 1, and the buffer pad 5 is made of rubber material. When the sensor bracket is in use, the fixing plate 3 is first connected to the first side wall 91 through the expansion bolt 33, and then the lower end of the weighing sensor 2 is threadedly connected to the first vertical pole 1, and then the upper end of the weighing sensor 2 is connected to the fixing plate 3 through the first supporting bolt 21. The first vertical pole 1 and the first bracket 4 form a downward pulling force on the weighing sensor 2 under the action of gravity. When multiple cables are laid on the first bracket 4, the weight of the multiple cables distributed on the corresponding first bracket 4 also forms a downward pulling force on the weighing sensor 2. When the cables on each layer of the first bracket 4 are installed, the first bracket 4 distributes a section of the weight of the multiple cables. At this time, the weighing sensor 2 is peeled, and the measured value of the weighing sensor 2 after peeling is zero (under the weight of multiple cables, the back of the first vertical pole 1 The surface is attached to the first side wall 91, and part of the weight will be distributed to the first side wall 91 for support, but the weight distributed after peeling has little effect on the weighing). During operation, the cables and brackets in the cable groove will not have a large weight change, unless individual brackets fall off, causing the weight of the cables shared on adjacent brackets to change, or the cover of the cable groove is damaged, and external heavy objects fall into the cable groove and press on the bracket, which will cause a large change in the measured value of the weighing sensor 2. The weighing sensor 2 sets an alarm value X. The smaller the setting value of X, the more sensitive the weighing sensor 2 is. In this embodiment, X=2KG. When the weighing sensor 2 measures a weight greater than X or less than -X, for example, 3KG or -3KG is monitored, a signal is sent out, and the signal is transmitted to the external monitoring system through the sensor's wiring. The staff can handle it after receiving the alarm. Two rows of brackets are arranged in the cable trench 9 along the length direction, and the two rows of brackets are arranged correspondingly. A row of brackets is arranged on the first side wall 91 and the second side wall 92 respectively. The brackets include the sensor bracket of the present embodiment and the second bracket. The second bracket adopts a common bracket. The second bracket includes a second vertical pole 8 and a second bracket arm 81. The second vertical pole 8 is connected to the second side wall 92 by an expansion bolt. The second bracket arm 81 is symmetrically arranged with the first bracket arm 4. The adjacent brackets in each row of brackets are arranged at intervals of 50 cm. The sensor brackets of the present embodiment are arranged at intervals of 5 meters along the length direction in the cable trench 9. The remaining brackets all adopt the second bracket. The sensor brackets on the first side The wall 91 and the second side wall 92 can be arranged at intervals (the sensor bracket is also arranged at intervals on the second side wall 92), so as to reduce the number of sensor brackets used, reduce costs, and perform good monitoring in the direction of the cable length. When an external heavy object smashes the cable groove 9 and falls onto the bracket, the cable will be squeezed and damaged. Sometimes the cable has not been damaged yet, so it is impossible to grasp it in time. In this embodiment, the weighing sensor 2 can alarm when it detects a large weight change, and promptly remind the staff. When individual brackets fall off, the weight change is shared by adjacent sensor brackets. The weighing sensor 2 can also alarm when it detects that the weight change exceeds the alarm value.

[0027] like Figure 1 and Figure 2 As shown, the fixing plate 3 is provided with a first connecting bolt 31, and two first connecting bolts 31 are provided. The two first connecting bolts 31 are respectively provided on both sides of the weighing sensor 2 and are threadedly connected with the fixing plate 3. The top plate 11 of the first vertical pole 1 is provided with a first connecting screw hole 101 corresponding to the first connecting bolt 31. The first connecting bolt 31 can be connected to the first vertical pole 1 through the first connecting screw hole 101. When the first vertical pole 1 is connected to the fixing plate 3 through the first connecting bolt 31, the weighing sensor 2 is no longer subjected to downward tension. When the weighing sensor 2 needs to be replaced, the first vertical pole 1 is connected through the two first connecting bolts 31, so as to suspend the first vertical pole 1. The first vertical pole 1 is provided with a connecting piece 12, and the connecting piece 12 is provided with a first through hole 121. The side wall of the cable groove 9 is provided with a hole corresponding to the first through hole 121, so as to facilitate the auxiliary positioning of the first vertical pole 1 when the first vertical pole 1 is installed. After the weighing sensor 2 is connected, the bolt in the first through hole 121 is removed. The first connecting bolt 31 is arranged on the fixing plate 3, which is also convenient for the staff to operate.

[0028] like Figure 1 and Figure 2 As shown, the first vertical pole 1 is provided with a temperature sensor 6, which is arranged on the side of the first vertical pole 1. The temperature sensor 6 adopts an existing fire-fighting temperature sensor, such as the NTC temperature sensor of the Tepuson brand. When the temperature rises when a fire occurs in the cable trench 9, the temperature sensor 6 sends a signal to the outside to notify the staff. The lower end of the first vertical pole 1 is provided with a liquid level switch 7, which adopts an existing tuning fork liquid level switch, such as the MAT-YC20 tuning fork liquid level switch produced by Jiangsu Meiant Automation Instrument Co., Ltd. When the water level in the cable trench 9 exceeds the tuning fork probe, the liquid level switch 7 sends a signal to the outside to notify the staff. The first vertical pole 1 is provided with a first socket 13, which is electrically connected to the weighing sensor 2, the temperature sensor 6 and the liquid level switch 7. The temperature sensor 6 and the liquid level switch 7 are provided with wiring inside the first vertical pole 1 and connected to the first socket 13, and the weighing sensor 2 is provided with wiring on the side and connected to the first socket 13, so that the wiring of the three sensors is unified and connected to the outside. The length of the cable trench 9 sometimes reaches several kilometers or even dozens of kilometers. The weighing sensor 2, temperature sensor 6 and liquid level switch 7 can be sequentially coded respectively to correspond to their positions in the cable trench 9, which makes it convenient for the staff to grasp the alarm position and arrive at the scene in time.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A sensor bracket for a cable trench, characterized in that: The invention comprises a first vertical pole (1), a weighing sensor (2) connected to the first vertical pole (1), a fixing plate (3) connected to the weighing sensor (2) and used for connecting to the side wall of a cable groove, and a first supporting arm (4) connected to the first vertical pole (1), wherein the first vertical pole (1) and the first supporting arm (4) form a downward pulling force on the weighing sensor (2).

2. The sensor bracket for cable trench according to claim 1, characterized in that: The fixing plate (3) is provided with a first connecting bolt (31), and the first vertical pole (1) is provided with a first connecting screw hole (101) corresponding to the first connecting bolt (31). When the first vertical pole (1) is connected to the fixing plate (3) via the first connecting bolt (31), the weighing sensor (2) is no longer subjected to downward pulling force.

3. The sensor bracket for cable trench according to claim 2, characterized in that: A connecting piece (12) is provided on the first upright pole (1), and a first through hole (121) is provided on the connecting piece (12).

4. The sensor bracket for cable trench according to claim 2, characterized in that: The back side of the first upright pole (1) is connected to a buffer pad (5).

5. The sensor bracket for cable trench according to claim 1, characterized in that: A temperature sensor (6) is provided on the first upright pole (1).

6. The sensor bracket for cable trench according to claim 5, characterized in that: A liquid level switch (7) is provided at the lower end of the first upright pole (1).

7. The sensor bracket for cable trench according to claim 6, characterized in that: The first upright pole (1) is provided with a first socket (13) electrically connected to the weighing sensor (2), the temperature sensor (6) and the liquid level switch (7).

8. The sensor bracket for cable trench according to claim 1, characterized in that: More than one first support arm (4) is provided, and the first support arm (4) is detachably connected to the first upright pole (1).

9. The sensor bracket for cable trench according to claim 1, characterized in that: More than one first connecting bolt (31) is provided.

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