Cable laying device

Abstract

A cable laying device comprises a pay-off rack, a track, an automatic traction device, a positioning system, a sensor assembly and a control system. A motor is mounted on the pay-off rack; the automatic traction device is installed on the track and moves in the long axial direction of the track. The automatic traction device comprises a traction main body, a traction block and a driving device; the traction main body is arranged between the upper parts of the two side walls of the track, and the transverse length of the traction main body is adjustable; the traction main body comprises a sleeve and an insertion plate; lapping plates are respectively arranged at the upper parts of the left and right side surfaces of the traction main body; elastic telescopic devices are arranged on the two side faces of the traction body and located below the lap joint plates. The traction block is mounted at the bottom of the insertion plate; the driving device is mounted on the lapping plate, and is connected with the first roller; the positioning system is mounted on the plugboard; the control system is in telecommunication connection with the traction body and the positioning system. According to the utility model, the technical problems that the traditional laying method needs a large amount of labor cost and the laying efficiency is low are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building engineering construction, and particularly relates to a cable laying device. Background Art

[0002] With the development of science and technology and social progress, the ever-changing urban power grid has put forward higher and higher requirements for the laying of cables. In this regard, more stringent technical and safety requirements have been introduced, requiring technical and maintenance personnel to install cables. The quality of the cable will determine the stability of the cable when it is used in the future, which means that it will play a key role in the life cycle of the cable. The normal life of the cable will affect the power supply of the city and indirectly affect the normal operation of the project. Although the cable is relatively safe indoors or in tunnels, the quality and safety of the building are still the top priorities for installing the cable.

[0003] In recent years, with the development of society, my country's economic level has continued to rise, and the demand for electricity has continued to increase, which has promoted the development of distribution work. When building distribution facilities, it is necessary to strictly control the laying of cables, optimize the laying process of cables, and expand the use of cables. However, in the process of expanding the use of cables, many construction problems have arisen. Therefore, in order to promote the development of distribution work, the cable laying technology in distribution work has been studied.

[0004] Cable laying technology is one of the commonly used projects in distribution work. Installing cables means connecting them during transmission before reaching the junction box. Selecting different cable technologies according to the actual needs of different distribution work is crucial to planning and improving work distribution. With the development of social economy, people's production and life are increasingly dependent on electricity, the scope of distribution work is becoming wider and wider, and the requirements for the speed and quality of distribution facilities are also getting higher and higher. Modern requirements in distribution require the selection of the most appropriate cable TV technology, full understanding of the actual needs of this project cable, planning construction methods in advance, ensuring construction quality, ensuring the nature of scientific projects, improving construction processes, and reducing the work pressure of technicians. In order to reduce the number of engineering accidents, the rational use of cable laying technology plays an important role in distribution work.

[0005] Existing cable laying usually adopts vertical cable laying method and horizontal cable laying method. The vertical cable laying method uses a traction machine to lay the cable from bottom to top, and drags it to the laying position through external force. The horizontal laying method is to place the cable drum on the pay-off rack, and the cable steel frame should be securely fixed at the other end of the bridge. Pass one end of the wire rope through the pulley and lay it in the bridge, place it on the cable drum, and use the cable clamp to firmly fix the cable to the wire rope; cooperate with manual labor to complete the cable laying. The above-mentioned cable laying method requires a lot of manpower costs, and the laying efficiency is low. It is necessary to seek more intelligent, efficient and environmentally friendly solutions to improve the construction and operation efficiency of the power system. Utility Model Content

[0006] The utility model aims to provide a cable laying device and a construction method thereof, so as to solve the technical problems that the traditional laying method requires a large amount of manpower cost and has low laying efficiency.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions.

[0008] A cable laying device, comprising a pay-off frame; also comprising a track, an automatic traction device, a positioning system, a sensor assembly and a control system; a motor is installed on the pay-off frame, and the motor drives the cable to rotate; the track is arranged on the cable laying path; the automatic traction device is installed on the track and moves along the long axis of the track; the automatic traction device comprises a traction body, a traction block and a driving device; the traction body is arranged between the upper parts of the two side walls of the track, and the lateral length of the traction body is adjustable; the traction body comprises a sleeve and a plug-in plate; the plug-in plate is horizontally plugged into the sleeve, and the plug-in plate is adjustable in the lateral direction; overlapping plates are respectively arranged on the upper parts of the left and right sides of the traction body; the overlapping plates are overlapped on the side of the corresponding side of the track The invention relates to a traction body, a traction device and a positioning system, wherein the traction body is provided on the traction body and the positioning system is provided on the traction body. The traction body is provided on the traction body and the positioning system is provided on the traction body. The traction block is installed at the bottom of the plug plate and is laterally adjustable along with the plug plate. The driving device is installed on the plug plate and is connected to the first roller to drive the first roller to move along the long axis of the track. The positioning system is installed on the plug plate to accurately locate the position and direction of the traction block. The control system is respectively connected to the traction body and the positioning system by telecommunication to process the data of the positioning system in real time and control the movement of the traction body.

[0009] Preferably, a sensor assembly is also included; the sensor assembly includes a distance sensor, an angle sensor and a cable tension sensor, the sensor assembly is installed on the cable, near the traction block, and the sensor assembly is connected to the control system by telecommunication.

[0010] Preferably, a guide wheel is also included; the guide wheel is arranged on the cable laying path and is used for preliminarily controlling the direction of the cable.

[0011] Preferably, the pay-off rack includes a bracket and a rotating shaft; there are two brackets, which are symmetrically arranged at intervals; the bracket includes a chassis, a column and a horizontal support; a second roller with a brake is connected to the bottom of the chassis; there are two columns, which are connected to the top of the chassis at intervals, and a top rod is connected between the tops of the two columns; the horizontal support is connected between the two columns, located below the top rod, and the horizontal support is vertically adjustable; the rotating shaft is installed on the horizontal supports on both sides, and the rotating shaft is rotated by a motor.

[0012] Preferably, a jack is provided at the bottom of the horizontal support of the chassis; sleeves are provided on both sides of the horizontal support at positions corresponding to the columns; the horizontal support is slidably connected to the columns through the sleeves; a bearing is installed in the middle of the horizontal support at a position corresponding to the rotating shaft; and the end of the rotating shaft is fixedly connected to the inner ring of the bearing.

[0013] Preferably, the longitudinal section of the sleeve is rectangular, and an end plate is provided at the end of the sleeve away from the plug plate; the lap plate on the corresponding side is connected to the end plate; electric telescopic rods are installed inside the sleeve and on the inner side surface of the end plate along the longitudinal intervals; the end of the plug plate inserted in the sleeve is connected to the electric telescopic rod; the control system is connected to the electric telescopic rod by telecommunication.

[0014] Preferably, the elastic telescopic device includes a spring and a shell; the spring is provided in a group and arranged at intervals along the longitudinal direction on one side of the traction body; one end of the spring close to the traction body is fixedly connected to the traction body; the shell is sleeved on the end of a group of springs away from the traction body, and a distance is left between the shell and the traction body.

[0015] Preferably, the cross-section of the track is U-shaped; the cross-section of the lap plate is an inverted L-shape, including a horizontal plate section and a vertical plate section; the horizontal plate section is mounted on the top of the track side wall; the vertical plate section is located on the outside of the track side wall; the first roller is installed on the bottom of the horizontal plate section and the inner side of the vertical plate section.

[0016] Compared with the prior art, the utility model has the following characteristics and beneficial effects.

[0017] 1. The traction body in the utility model includes a sleeve and a plug plate, and elastic telescopic devices are respectively arranged on both sides of the traction body, and a positioning system is installed on the plug plate. The design of this structure can accurately obtain the precise position information of the traction body in the laying area through the positioning system, and feed back the position information to the control system; when the position of the positioning system deviates from the target path, the control system controls the electric telescopic rod to adjust the plug plate, so as to achieve precise positioning of the traction block; at the same time, the distance sensor and angle sensor arranged on the cable can monitor the position and direction of the cable at all times, and intuitively feedback the distance and direction of the cable, the information received by the controller, when the actual position of the cable is offset, the plug plate is adjusted by the electric telescopic rod, so as to achieve more accurate laying of the cable along the designed laying path. The above-mentioned structural design of the present application not only improves the accuracy of laying, but also reduces manpower and improves laying efficiency.

[0018] 2. The utility model sets a tension sensor on the cable, which can monitor the tension of the cable in real time during the laying process. By monitoring the tension of the cable, the system can ensure that the cable is subjected to appropriate tension during the laying process to avoid excessive tension causing cable damage or insufficient tension causing cable relaxation. At the same time, the tension sensor can also provide important information about the quality of cable laying. By monitoring the tension of the cable, the system can promptly discover problems that may occur during the laying process, such as cable winding, twisting or excessive tension, so as to adjust the laying strategy in time to ensure the laying quality.

[0019] 3. The cable laying device of the utility model realizes intelligent monitoring and guidance of the cable laying process by integrating advanced navigation and control technologies, bringing convenience and benefits to the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the cable laying device of the utility model.

[0022] Figure 2 It is a structural schematic diagram of the pay-off frame in the utility model.

[0023] Figure 3 It is a structural schematic diagram of the utility model in which the traction body is installed on the track.

[0024] Figure 4 It is a schematic diagram of the vertical cross-sectional structure of the traction body in the utility model.

[0025] Figure 5 It is a structural schematic diagram of the elastic telescopic device in the utility model arranged on the side of the traction body.

[0026] Figure numerals: 1 - pay-off rack, 1.1 - bracket, 1.1.1 - chassis, 1.1.2 - column, 1.1.3 - horizontal support, 1.1.4 - top rod, 1.1.5 - second roller, 1.1.6 - jack, 1.1.7 - bottom support rod, 1.2 - rotating shaft, 2 - guide wheel, 3 - track, 4 - automatic traction device, 4.1 - traction body, 4.1.1 - casing, 4.1.2 - plug board, 4.1.3 - end plate, 4.1.4 - electric telescopic rod, 4.2 - traction block, 4.3 - driving device, 4.4 - lap plate, 4.5 - first roller, 4.6 - elastic telescopic device, 4.6.1 - spring, 4.6.2 - housing, 5 - positioning system, 6 - sensor assembly, 7 - motor, 8 - cable. DETAILED DESCRIPTION

[0027] like Figure 1-5As shown, the cable laying device includes a pay-off frame 1 and a guide wheel 2; it also includes a track 3, an automatic traction device 4, a positioning system 5, a sensor assembly 6 and a control system; the pay-off frame 1 is equipped with a motor 7, and the motor 7 drives the cable 8 to rotate; the guide wheel 2 is arranged on the laying path of the cable 8, and is used to preliminarily control the direction of the cable 8; the track 3 is arranged on the laying path of the cable 8; the automatic traction device 4 is installed on the track 3 and moves along the long axis of the track 3; the automatic traction device 4 includes a traction body 4 .1, a traction block 4.2 and a driving device 4.3; the traction body 4.1 is arranged between the upper parts of the two side walls of the track 3, and the lateral length of the traction body 4.1 is adjustable; the traction body 4.1 includes a sleeve 4.1.1 and a plug plate 4.1.2; the plug plate 4.1.2 is horizontally plugged into the sleeve 4.1.1, and the plug plate 4.1.2 is adjustable in the lateral direction; lap plates 4.4 are respectively arranged on the upper parts of the left and right sides of the traction body 4.1; the lap plates 4.4 are lapped on the side walls of the corresponding side of the track 3, and when the lap plates 4.4 face the track 3 The first rollers 4.5 are arranged at intervals on the surface of the traction body 4.1; elastic telescopic devices 4.6 are arranged on both side surfaces of the traction body 4.1 and below the lap plate 4.4; one end of the elastic telescopic device 4.6 is connected to the traction body 4.1, and the other end of the elastic telescopic device 4.6 is crimped to the side wall of the track 3; the traction block 4.2 is installed at the bottom of the plug plate 4.1.2 and can be adjusted laterally along with the plug plate 4.1.2; the driving device 4.3 is installed on the lap plate 4.4, and the driving device 4.3 is connected to the first roller 4.5 to drive the first roller 4.5 to drive the second ...2 to drive the second roller 4.2 to drive the second roller 4.5 to drive the second roller 4.5 to drive the second roller 4.2 to drive the second roller A roller 4.5 moves along the long axis of the track 3; the positioning system 5 is installed on the plug plate 4.1.2 to accurately locate the position and direction of the traction block 4.2; the sensor component 6 includes a distance sensor, an angle sensor and a cable tension sensor, and the sensor component 6 is installed on the cable 8, near the traction block 4.2; the control system is respectively connected to the traction body 4.1, the positioning system 5, and the sensor component 6 by telecommunications, and is used to process the data of the sensor component 6 and the positioning system 5 in real time, and control the movement of the traction body 4.1.

[0028] In this embodiment, the cable laying device also includes a sensor assembly 6; the sensor assembly 6 includes a distance sensor, an angle sensor and a cable tension sensor. The sensor assembly 6 is installed on the cable 8, near the traction block 4.2, and the sensor assembly 6 is connected to the control system by telecommunication.

[0029] In this embodiment, the cable laying device further includes a guide wheel 2 ; the guide wheel 2 is arranged on the laying path of the cable 8 and is used to preliminarily control the direction of the cable 8 .

[0030] In this embodiment, the wire pay-off rack 1 includes a bracket 1.1 and a rotating shaft 1.2; there are two brackets 1.1, and the two brackets 1.1 are symmetrically arranged at intervals; the bracket 1.1 includes a chassis 1.1.1, a column 1.1.2 and a horizontal support 1.1.3; the bottom of the chassis 1.1.1 is connected to a second roller 1.1.5 with a brake; there are two columns 1.1.2, which are connected to the top of the chassis 1.1.1 at intervals, and a top rod 1.1.4 is connected between the tops of the two columns 1.1.2; the horizontal support 1.1.3 is connected between the two columns 1.1.2, is located below the top rod 1.1.4, and the horizontal support 1.1.3 is vertically adjustable; the rotating shaft 1.2 is installed on the horizontal supports 1.1.3 on both sides, and the rotating shaft 1.2 is rotated by the motor 7.

[0031] In this embodiment, a jack 1.1.6 is provided at the bottom of the chassis 1.1.1 at the horizontal support 1.1.3; sleeves 1.1.7 are provided on both sides of the horizontal support 1.1.3 at positions corresponding to the columns 1.1.2; the horizontal support 1.1.3 is slidably connected to the columns 1.1.2 through the sleeves 1.1.7; a bearing is installed in the middle of the horizontal support 1.1.3 at a position corresponding to the rotating shaft 1.2; and the end of the rotating shaft 1.2 is fixedly connected to the inner ring of the bearing.

[0032] In this embodiment, the longitudinal section of the sleeve 4.1.1 is rectangular, and an end plate 4.1.3 is provided at one end of the sleeve 4.1.1 away from the plug plate 4.1.2; the lap plate 4.4 on the corresponding side is connected to the end plate 4.1.3; electric telescopic rods 4.1.4 are installed inside the sleeve 4.1.1 and on the inner side surface of the end plate 4.1.3 along the longitudinal interval; the end of the plug plate 4.1.2 inserted in the sleeve 4.1.1 is connected to the electric telescopic rod 4.1.4; the control system is connected to the electric telescopic rod 4.1.4 by telecommunication.

[0033] In this embodiment, the elastic telescopic device 4.6 includes a spring 4.6.1 and a shell 4.6.2; the spring 4.6.1 is arranged in a group and arranged at intervals on one side of the traction body 4.1 along the longitudinal direction; the end of the spring 4.6.1 close to the traction body 4.1 is fixedly connected to the traction body 4.1; the shell 4.6.2 is sleeved on the end of a group of springs 4.6.1 away from the traction body 4.1, and a distance is left between the shell 4.6.2 and the traction body 4.1.

[0034] In this embodiment, the cross-section of the track 3 is U-shaped; the cross-section of the lap plate 4.4 is an inverted L-shape, including a horizontal plate section and a vertical plate section; the horizontal plate section is mounted on the top of the side wall of the track 3; the vertical plate section is located on the outside of the side wall of the track 3; the first roller 4.5 is installed at the bottom of the horizontal plate section and on the inner side of the vertical plate section.

[0035] In this embodiment, the cable laying device also includes a user interface provided to the operator, which is used to display the real-time position and path information of the cable, and interact and control the electric telescopic rod 4.1.4 and various sensors.

[0036] A construction method for a cable laying device comprises the following steps.

[0037] Step 1: configure a set of cable laying devices and deploy them to the laying area;

[0038] Step 2: Adjust the height of the jack 1.1.6 so that the horizontal support 1.1.3 is at a height that is suitable for the diameter of the cable 8.

[0039] Step 2: The operator inputs the target cable laying path and the allowable cable tension parameters through the interface;

[0040] Step 3: The control system sends the laying path information to the positioning system and the traction body 4.1;

[0041] Step 4: The traction body 4.1 is accurately positioned and moved in the track 3 according to the received laying task and path planning information;

[0042] Step five: the positioning system continuously feeds back the position information to the control system during the movement. The control system compares the position information fed back by the positioning system with the preset cable laying target path, and controls the traction body 4.1 to adjust the position when the position is offset. At the same time, the sensor assembly 6 continuously monitors the position, direction and tension of the cable 8, and the control system adjusts the movement of the traction body 4.1 according to these data to ensure the accurate laying of the cable 8.

[0043] In this embodiment, when electric telescopic rods 4.1.4 are installed inside the sleeve 4.1.1 and on the inner side surface of the end plate 4.1.3 along the longitudinal interval, when adjusting the position of the traction body 4.1 in step five, the length of the plug plate 4.1.2 in the sleeve 4.1.1 is adjusted by the electric telescopic rod 4.1.4, so as to accurately adjust the position of the traction block 4.2.

[0044] In this embodiment, the cross section of the lap plate 4.4 is in an inverted L-shape, and includes a transverse plate section and a vertical plate section; the first roller 4.5 is installed on the bottom of the transverse plate section and the inner side surface of the vertical plate section.

[0045] In this embodiment, the chassis 1.1.1 is a trapezoidal frame, and bottom support rods 1.1.7 for supporting the columns 1.1.2 are arranged at intervals in the trapezoidal frame.

[0046] In this embodiment, the driving device is an electric motor. In this application, the driving device 4.3 is directly connected to the first roller 4.5, and the output shaft of the driving device 4.3 is directly connected to the shaft of one of the first rollers 4.5.

[0047] Of course, in other embodiments, the driving device 4.3 and the first roller 4.5 may also be connected by a gear transmission system or a coupling.

[0048] In this embodiment, after the laying is completed, the control system generates a laying report and archives relevant data for future maintenance and management.

[0049] The above embodiments are not exhaustive of specific implementation methods, and there may be other embodiments. The purpose of the above embodiments is to illustrate the utility model rather than to limit the protection scope of the utility model. All applications derived from simple changes of the utility model fall within the protection scope of the utility model.

Claims

1. A cable laying device, comprising a pay-off frame (1); characterized in that: It also includes a track (3), an automatic traction device (4), a positioning system (5) and a control system; the pay-off frame (1) is equipped with a motor (7), the motor (7) drives the cable (8) to rotate; the track (3) is arranged on the path where the cable (8) is laid; the automatic traction device (4) is installed on the track (3) and moves along the long axis of the track (3); the automatic traction device (4) includes a traction body (4.1), a traction block (4.2) and a driving device (4.3); the traction body (4. 1) is arranged between the upper parts of the two side walls of the track (3), and the lateral length of the traction body (4.1) is adjustable; the traction body (4.1) comprises a sleeve (4.1.1) and a plug plate (4.1.2); the plug plate (4.1.2) is horizontally plugged into the sleeve (4.1.1), and the plug plate (4.1.2) is adjustable in the lateral direction; overlapping plates (4.4) are respectively arranged on the upper parts of the left and right sides of the traction body (4.1); the overlapping plates (4.4) are overlapped on the side wall of the corresponding side of the track (3), and the overlapping plates (4.4) are overlapped on the side wall of the corresponding side of the track (3), and the overlapping plates (4.4) are overlapped on the side wall of the track (3). .4) first rollers (4.5) are arranged at intervals on the surface facing the track (3); elastic telescopic devices (4.6) are arranged on both side surfaces of the traction body (4.1) and below the lap plate (4.4); one end of the elastic telescopic device (4.6) is connected to the traction body (4.1), and the other end of the elastic telescopic device (4.6) is pressed against the side wall of the track (3); the traction block (4.2) is installed at the bottom of the plug plate (4.1.2) and can be adjusted laterally along with the plug plate (4.1.2); the driving device The device (4.3) is mounted on the overlap plate (4.4), and the driving device (4.3) is connected to the first roller (4.5) to drive the first roller (4.5) to move along the long axis of the track (3); the positioning system (5) is mounted on the plug plate (4.1.2) to accurately locate the position and direction of the traction block (4.2); the control system is respectively connected to the traction body (4.1) and the positioning system (5) by telecommunication to process the data of the positioning system (5) in real time and control the movement of the traction body (4.1).

2. The cable laying device according to claim 1, characterized in that: It also includes a sensor assembly (6); the sensor assembly (6) includes a distance sensor, an angle sensor and a cable tension sensor. The sensor assembly (6) is installed on the cable (8) at a location close to the traction block (4.2), and the sensor assembly (6) is connected to the control system by telecommunication.

3. The cable laying device according to claim 1, characterized in that It also includes a guide wheel (2); the guide wheel (2) is arranged on a path along which the cable (8) is laid, and is used to preliminarily control the direction of the cable (8).

4. The cable laying device according to claim 1, characterized in that: The pay-off frame (1) comprises a bracket (1.1) and a rotating shaft (1.2); there are two brackets (1.1), and the two brackets (1.1) are symmetrically arranged at intervals; the bracket (1.1) comprises a chassis (1.1.1), a column (1.1.2) and a horizontal support (1.1.3); a second roller (1.1.5) with a brake is connected to the bottom of the chassis (1.1.1); there are two columns (1.1.2), which are connected to the bottom at intervals. The top of the plate (1.1.1) is connected to the top of the two columns (1.1.2), and a top rod (1.1.4) is connected between the tops of the two columns (1.1.2); the horizontal support (1.1.3) is connected between the two columns (1.1.2) and is located below the top rod (1.1.4), and the horizontal support (1.1.3) is vertically adjustable; the rotating shaft (1.2) is installed on the horizontal supports (1.1.3) on both sides, and the rotating shaft (1.2) is driven to rotate by a motor (7).

5. The cable laying device according to claim 4, characterized in that: The chassis (1.1.1) is provided with a jack (1.1.6) at the bottom of the horizontal support (1.1.3); sleeves (1.1.7) are respectively provided on both sides of the horizontal support (1.1.3) at positions corresponding to the columns (1.1.2); the horizontal support (1.1.3) is slidably connected to the columns (1.1.2) via the sleeves (1.1.7); a bearing is installed in the middle of the horizontal support (1.1.3) at a position corresponding to the rotating shaft (1.2); and the end of the rotating shaft (1.2) is fixedly connected to the inner ring of the bearing.

6. The cable laying device according to claim 1, characterized in that: The longitudinal section of the sleeve (4.1.1) is rectangular, and an end plate (4.1.3) is arranged at one end of the sleeve (4.1.1) away from the plug plate (4.1.2); the lap plate (4.4) on the corresponding side is connected to the end plate (4.1.3); electric telescopic rods (4.1.4) are installed inside the sleeve (4.1.1) and on the inner side surface of the end plate (4.1.3) along the longitudinal interval; one end of the plug plate (4.1.2) inserted in the sleeve (4.1.1) is connected to the electric telescopic rod (4.1.4); and the control system is connected to the electric telescopic rod (4.1.4) by telecommunication.

7. The cable laying device according to claim 1, characterized in that: The elastic telescopic device (4.6) comprises a spring (4.6.1) and a shell (4.6.2); the springs (4.6.1) are arranged in a group and spaced apart in the longitudinal direction on one side of the traction body (4.1); one end of the spring (4.6.1) close to the traction body (4.1) is fixedly connected to the traction body (4.1); the shell (4.6.2) is sleeved on the end of the group of springs (4.6.1) away from the traction body (4.1), and a distance is left between the shell (4.6.2) and the traction body (4.1).

8. The cable laying device according to claim 1, characterized in that: The cross section of the track (3) is U-shaped; the cross section of the lap plate (4.4) is in an inverted L-shape, comprising a transverse plate section and a vertical plate section; the transverse plate section is mounted on the top of the side wall of the track (3); the vertical plate section is located outside the side wall of the track (3); and the first roller (4.5) is mounted on the bottom of the transverse plate section and on the inner side surface of the vertical plate section.

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