Tunnel contact net suspension device

Abstract

The utility model relates to the technical field of catenary construction, in particular to a tunnel catenary suspension device which comprises a top frame, a cross rod and a suspension rod. The cross rod is connected with the bottom of the top frame, and two screw rods are arranged at the bottom of the cross rod in a sliding mode; strip-shaped holes are formed in the two sides of the suspension rod respectively, the suspension rod is connected with the two screw rods through the two strip-shaped holes respectively, two position adjusting nuts are arranged on each screw rod, and the two position adjusting nuts are arranged on the upper side and the lower side of the suspension rod respectively. According to the invention, the two screw rods are slidably connected below the cross rod, and the suspension rod used for installing the insulator is connected with the screw rods through the strip-shaped holes in the side parts of the suspension rod, so that the horizontal position, the height position and the deflection angle of the insulator and the wire clamp can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of contact network construction, in particular to a tunnel contact network suspension device. Background Art

[0002] The overhead contact network is a high-voltage transmission line that is zigzag-shaped above the rails in an electrified railway and is used by the pantograph to draw current. Before installing the overhead contact network in a subway shield tunnel, it is necessary to fix a bracket on the top of the tunnel, and install the insulators and wire clamps to the top of the tunnel through the bracket. In order to ensure the installation accuracy of the overhead contact network, various measurements and calculations need to be performed before the bracket is installed. However, after installation, due to measurement errors and construction errors, there is still a certain deviation in the position of the insulators and wire clamps connected to the bracket.

[0003] Therefore, a technical solution is currently needed to solve the technical problems that the contact network bracket in the tunnel has measurement errors and installation errors, and it is inconvenient to adjust the bracket after installation. Utility Model Content

[0004] The invention object of the utility model is to provide a tunnel contact network suspension device to solve the technical problem that there are measurement errors and installation errors in the contact network bracket in the tunnel, and it is inconvenient to adjust the bracket after installation.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A tunnel contact network suspension device comprises a top frame, a cross bar and a suspension rod.

[0007] The top frame is used to connect the top of the tunnel;

[0008] The cross bar is connected to the bottom of the top frame, and two screws are slidably arranged at the bottom of the cross bar;

[0009] Strip holes are respectively provided on both sides of the suspension rod, and the suspension rod is connected to the two screw rods through the two strip holes respectively. Each screw rod is provided with two adjusting nuts, and the two adjusting nuts are respectively arranged on the upper and lower sides of the suspension rod.

[0010] The utility model discloses a tunnel contact network suspension device. When in use, a top frame is fixed to a tunnel top wall, a cross bar is fixed to the top frame, two screws are slidably connected to the bottom of the cross bar, a suspension rod is sleeved on the two screws, and finally an insulator is connected to the suspension rod by bolts, a wire clamp is connected under the insulator, and the contact network is fixed by the wire clamp; the present application connects two screws slidably under the cross bar, and a suspension rod for installing the insulator is connected to the screw rod through a strip hole on its side; when the contact network needs to be adjusted in horizontal position, the screw rod can be slid under the cross bar to adjust the horizontal position of the suspension rod; when the contact network needs to be adjusted in height, the adjusting nut on the screw rod can be rotated to change the height of the suspension rod accordingly; when the contact network needs to be adjusted in yaw angle, the adjusting nut on the screw rod can be rotated to make the two ends of the suspension rod deflect in height, thereby adjusting the yaw angle of the contact network.

[0011] As a preferred solution of the utility model, a T-shaped slide groove is provided at the bottom of the crossbar, and the T-shaped slide groove is arranged along the length direction of the crossbar, and a slider adapted to the T-shaped slide groove is provided at the top of the screw rod. The screw rod and the crossbar are slidably connected, and the T-shaped slide groove has a limiting effect on the slider located therein, preventing the screw rod from slipping during the horizontal position adjustment process.

[0012] As a preferred solution of the utility model, each of the screw rods is provided with a clamping nut, and the clamping nut is used to abut against the bottom of the cross bar. After the slider at the top of the screw rod is embedded in the T-shaped slide groove, the clamping nut on the screw rod is rotated to make the clamping nut abut against the bottom of the cross bar, thereby achieving relative fixation of the screw rod and the cross bar, and avoiding relative shaking of the screw rod and the cross bar during use.

[0013] As a preferred solution of the utility model, the top frame includes two connecting rods, the two connecting rods are used to connect the two sides of the tunnel top respectively, and the cross bar is detachably connected to the two connecting rods respectively. The cross bar can cross the tunnel top wall and connect to the two sides of the tunnel, so that the suspension rod connected to the cross bar, the insulator and the wire clamp can be located in the middle of the tunnel, so as to facilitate the installation of the contact network.

[0014] As a preferred solution of the utility model, each connecting rod is provided with a plurality of mounting holes, and the plurality of mounting holes are arranged in a row along the length direction of the connecting rod. When in use, bolts are passed through the mounting holes to connect with the crossbar, and different mounting hole groups are selected from the plurality of mounting holes correspondingly provided on the two connecting rods to connect with the crossbar, so that the position of the crossbar along the length direction of the tunnel can be adjusted.

[0015] As a preferred solution of the utility model, the connecting rod is connected with a column, and the column is used to connect the tunnel embedded groove. By connecting the column with a certain height to the connecting rod, the position of the connecting rod can be moved downward to avoid interference between the connecting rod and the top of the tunnel, and at the same time, it is convenient for the connecting rod to adapt to the installation of different heights.

[0016] As a preferred solution of the utility model, the top of the column is connected with an ear piece, the ear piece is provided with a connection hole, the connection hole is equipped with a connection bolt, one end of the connection bolt is provided with a T-shaped head, and the connection bolt is sleeved with a fastening nut. When in use, a T-shaped embedded groove is reserved at the top of the tunnel, and during installation, the connecting screw is passed through the connection hole and then inserted into the embedded groove of the tunnel, and then the connecting bolt is rotated to make the T-shaped head stuck in the embedded groove, and finally the ear piece is pressed against the top of the tunnel by the fastening nut, thereby realizing the installation and fixation of the column and the connecting rod at the top of the tunnel.

[0017] As a preferred solution of the utility model, a reinforcing rib is connected between the side wall of the column and the ear piece, which can improve the structural strength of the ear piece, thereby improving the bearing capacity of the ear piece on the entire bracket and ensuring the stable erection of the contact network.

[0018] As a preferred solution of the utility model, each of the connecting rods is connected to two columns, and the two columns are respectively arranged at both ends of the connecting rod. The two columns connect the two tunnel embedded grooves and are connected to the two ends of the connecting rod at the same time, so that the connecting rod is installed more firmly on the top of the tunnel.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] 1. The present application connects two screws slidably under the crossbar, and the suspension rod for installing the insulator is connected to the screws through the strip holes on its side. When the contact network needs to be adjusted in horizontal position, the screws can be slid under the crossbar to achieve the horizontal position adjustment of the suspension rod;

[0021] 2. When the overhead contact network needs to be adjusted in height, the adjustment nut on the screw rod can be rotated to change the height of the suspension rod accordingly;

[0022] 3. When the contact network needs to adjust the swing angle, the adjusting nut on the screw rod can be rotated to make the two ends of the suspension rod highly deflected, thereby achieving the swing angle adjustment of the contact network. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a diagram showing the use status of a tunnel contact network suspension device of the utility model;

[0024] Figure 2 This is a top view of a tunnel contact network suspension device of the utility model;

[0025] Figure 3 It is a structural schematic diagram of the crossbar of the utility model;

[0026] Figure 4 It is a structural schematic diagram of the suspension rod of the utility model;

[0027] Figure 5 It is a schematic diagram of the connection between the cross bar and the screw rod of the utility model;

[0028] Markings in the figure: 1-top frame, 11-connecting rod, 111-mounting hole, 12-column, 121-ear piece, 1211-connecting hole, 122-connecting bolt, 123-fastening nut, 124-reinforcement rib, 2-cross bar, 21-T-type slide, 3-suspension rod, 31-bar hole, 4-screw, 41-adjusting nut, 42-tightening nut, 43-slider, 5-tunnel, 51-embedded slot, 6-insulator, 7-wire clamp. DETAILED DESCRIPTION

[0029] The utility model is described in detail below in conjunction with the accompanying drawings.

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] Example 1

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a tunnel contact network suspension device according to this embodiment includes a top frame 1, a cross bar 2 and a suspension rod 3.

[0033] The top frame 1 is used to connect the top of the tunnel 5;

[0034] The cross bar 2 is connected to the bottom of the top frame 1, and two screws 4 are slidably provided at the bottom of the cross bar 2;

[0035] The suspension rod 3 is provided with strip holes 31 on both sides, and the suspension rod 3 is connected to the two screw rods 4 through the two strip holes 31. Each screw rod 4 is provided with two adjusting nuts 41, and the two adjusting nuts 41 are respectively arranged on the upper and lower sides of the suspension rod 3.

[0036] When in use, the top frame 1 is fixed to the top wall of the tunnel 5, the cross bar 2 is fixed to the top frame 1, and the bottom of the cross bar 2 is slidably connected to two screws 4, and the suspension rods 3 are sleeved on the two screws 4. Finally, the insulators 6 are connected to the suspension rods 3 by bolts, and the wire clamps 7 are connected below the insulators 6, and the contact network is fixed by the wire clamps 7; the present application connects the two screws 4 slidably below the cross bar 2, and the suspension rods 3 for installing the insulators 6 are connected to the screws 4 through the strip holes 31 on the sides thereof. When the contact network needs to be adjusted in horizontal position, the screws 4 can be slid under the cross bar 2 to adjust the horizontal position of the suspension rod 3. When the contact network needs to be adjusted in height, the adjusting nuts 41 on the screws 4 can be rotated to change the height of the suspension rod 3 accordingly; when the contact network needs to be adjusted in yaw angle, the adjusting nuts 31 on the screws 4 can be rotated to make the two ends of the suspension rod 3 deflect in height, thereby adjusting the yaw angle of the contact network.

[0037] Specifically, a T-shaped slot 21 is provided at the bottom of the cross bar 2, and the T-shaped slot 21 is arranged along the length direction of the cross bar 2. A slider 43 adapted to the T-shaped slot 21 is provided at the top of the screw rod 4, thereby realizing a slidable connection between the screw rod 4 and the cross bar 2. At the same time, the T-shaped slot 21 limits the slider 43 located therein, thereby preventing the screw rod 4 from slipping during the horizontal position adjustment process; further, each of the screw rods 4 is sleeved with a clamping nut 42, and the clamping nut 42 is used to abut against the bottom of the cross bar 2. After the slider 43 at the top of the screw rod 4 is embedded in the T-shaped slot 21, the clamping nut 42 on the screw rod 4 is rotated to make the clamping nut 42 abut against the bottom of the cross bar 2, thereby realizing relative fixation of the screw rod 4 and the cross bar 2, thereby preventing relative shaking of the screw rod 4 and the cross bar 2 during use.

[0038] Specifically, the top frame 1 includes two connecting rods 11, and the cross bar 2 is detachably connected to the two connecting rods 11 by bolts. The two ends of the connecting rod 11 are respectively connected to the column 12, and the side of the column 12 is provided with an ear piece 121, and the ear piece 121 is provided with a connecting hole 1211. The connecting hole 1211 is equipped with a connecting bolt 122, and the end of the connecting bolt 122 is provided with a T-shaped head. The connecting bolt 122 is sleeved with a fastening nut 123. When in use, the connecting screw 122 is installed by reserving a T-shaped embedded groove 51 at the top of the tunnel 5. It passes through the connecting hole 1211 and is then inserted into the embedded groove 51 of the tunnel 5. Then the connecting bolt 122 is rotated to make the T-head stuck in the embedded groove 51. Finally, the ear piece 121 is pressed against the top of the tunnel 5 by tightening the nut 123, thereby realizing the installation and fixation of the column 12 and the connecting rod 11 on the top of the tunnel 5. Furthermore, a reinforcing rib 124 is connected between the side wall of the column 12 and the ear piece 121, which can improve the structural strength of the ear piece 121, thereby improving the bearing capacity of the ear piece 121 for the entire device and ensuring the stable installation of the contact network.

[0039] Example 2

[0040] like Figure 1 and Figure 2 As shown, the difference between this embodiment and Embodiment 1 is that each connecting rod 11 is provided with a plurality of mounting holes 111 , and the plurality of mounting holes 111 are arranged along the length direction of the connecting rod 11 .

[0041] In this embodiment, bolts are passed through the mounting holes 111 to connect with the cross bar 2, thereby realizing a detachable connection between the cross bar 2 and the connecting rod 11. By selecting different mounting hole groups from the multiple mounting holes 111 correspondingly arranged on the two connecting rods 11 to connect with the cross bar 2, the position of the cross bar 2 along the length direction of the tunnel 5 can be adjusted.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tunnel contact network suspension device, characterized in that: It comprises a top frame (1), a cross bar (2) and a suspension bar (3). The top frame (1) is used to connect to the top of the tunnel (5); The cross bar (2) is connected to the bottom of the top frame (1), and two screw rods (4) are slidably provided at the bottom of the cross bar (2); The suspension rod (3) is provided with strip holes (31) on both sides respectively. The suspension rod (3) is connected to the two screw rods (4) respectively via the two strip holes (31). Each screw rod (4) is provided with two adjustment nuts (41). The two adjustment nuts (41) are respectively arranged on the upper and lower sides of the suspension rod (3).

2. The tunnel contact network suspension device according to claim 1, characterized in that: A T-shaped slide groove (21) is provided at the bottom of the cross bar (2), and the T-shaped slide groove (21) is arranged along the length direction of the cross bar (2). A sliding block (43) adapted to the T-shaped slide groove (21) is provided at the top of the screw rod (4).

3. The tunnel contact network suspension device according to claim 2, characterized in that: A clamping nut (42) is sleeved on each of the screw rods (4), and the clamping nut (42) is used to abut against the bottom of the cross rod (2).

4. The tunnel contact network suspension device according to any one of claims 1 to 3, characterized in that: The top frame (1) comprises two connecting rods (11), the two connecting rods (11) are respectively used to connect two sides of the top of the tunnel (5), and the cross bar (2) is respectively detachably connected to the two connecting rods (11).

5. The tunnel contact network suspension device according to claim 4, characterized in that: Each connecting rod (11) is provided with a plurality of mounting holes (111), and the plurality of mounting holes (111) are arranged in an array along the length direction of the connecting rod (11).

6. The tunnel contact network suspension device according to claim 4, characterized in that: The connecting rod (11) is connected to a column (12), and the column (12) is used to connect to the embedded groove (51) of the tunnel (5).

7. The tunnel contact network suspension device according to claim 6, characterized in that: The top of the column (12) is connected to an ear piece (121), the ear piece (121) is provided with a connection hole (1211), the connection hole (1211) is provided with a connection bolt (122), one end of the connection bolt (122) is provided with a T-shaped head, and a fastening nut (123) is sleeved on the connection bolt (122).

8. The tunnel contact network suspension device according to claim 7, characterized in that: A reinforcing rib (124) is connected between the side wall of the upright column (12) and the ear piece (121).

9. The tunnel contact network suspension device according to claim 6, characterized in that: Each of the connecting rods (11) is connected to two upright posts (12), and the two upright posts (12) are respectively arranged at two ends of the connecting rod (11).

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