Signal line deconcentrator for radio and television engineering

Abstract

The invention provides a signal line deconcentrator for radio and television engineering, which comprises a storage shell, the storage shell is of a cylindrical frame structure, the upper end and the lower end of the storage shell are fixedly provided with a line inlet pipe and a line outlet pipe respectively, and the line inlet pipe and the line outlet pipe extend in the left-right direction respectively; a plurality of upper-level limiting holes which are arranged at intervals in the front-back direction are formed in the upper portion of the connecting position of the wire inlet pipe and the storage shell, the upper-level limiting holes are arranged in an up-down through mode, a limiting mechanism is arranged in each upper-level limiting hole, and the limiting mechanisms are used for clamping and limiting signal wires; when a signal line enters the line inlet pipe, the signal line can be clamped and limited through the limiting mechanism, so that the signal line is clamped and bound, the signal line can be tidied, and when the signal branch line comes out of the line outlet pipe, the signal branch line can be clamped and limited through the side-by-side clamping mechanism, so that the signal branch line can be tidied; and the tidiness of signal branching distribution is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of signal line equipment, and specifically relates to a signal line distributor for a broadcasting engineering. BACKGROUND

[0002] The signal line mainly refers to a line for transmitting sensing information and control information in an electrical control circuit. The signal line is often formed into a bundle or multiple bundles of transmission lines by multiple cable lines, or is a printed line arranged in a printed circuit. With the continuous progress of science and technology and application, the signal line has been developed from a metal carrier to other carriers, such as a signal line.

[0003] The existing signal line is provided with multiple signal lines when being connected to a signal line access box. The multiple signal lines are scattered in the access box, and then the signal lines in the access box are distributed in disorder. When subsequent maintenance is performed, the signal lines need to be arranged one by one, which increases the difficulty of subsequent maintenance. Moreover, the existing distribution box structure is relatively single, and the directions of cable entry and cable exit are not flexible. When multiple directions of cable entry and cable exit are required, it is inconvenient. SUMMARY

[0004] The present application aims to provide a signal line distributor for a broadcasting engineering, and aims to solve the problem of disorderly distribution of signal lines in the prior art.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: the signal line distributor for a broadcasting engineering comprises a receiving shell, the receiving shell is a cylindrical frame structure, an inlet pipe and an outlet pipe are fixedly arranged at the upper end and the lower end of the receiving shell respectively, and the inlet pipe and the outlet pipe are arranged in the left-right direction respectively;

[0006] A plurality of upper limiting holes are arranged at the upper part of the connection between the inlet pipe and the receiving shell, the upper limiting holes are arranged in front and back, the upper limiting holes are arranged in a through manner from top to bottom, a limiting mechanism is arranged in each upper limiting hole, and the limiting mechanism is used for clamping and limiting the signal line;

[0007] A rear hole is arranged at the rear side of the connection between the inlet pipe and the receiving shell, the rear hole is arranged in a through manner from front to back, the rear hole is in an inverted L shape, a rear sliding assembly is arranged in the rear hole, the rear sliding assembly can slide along the rear hole, and the rear sliding assembly is used for driving the limiting mechanism to slide along the upper limiting hole;

[0008] A lower limiting hole is arranged at the lower part of the connection between the outlet pipe and the receiving shell, the lower limiting hole is arranged in a through manner from top to bottom, a side-by-side clamping mechanism is arranged in the lower limiting hole, and the side-by-side clamping mechanism is used for clamping and limiting the signal line after distribution;

[0009] A front side hole with front and rear penetration is provided at the connection between the outlet tube and the housing. The front side hole is an inverted L-shape. Inside the front side hole is a front sliding component that can slide along the front side hole. The front sliding component is used to drive the parallel clamping mechanism to slide along the lower limiting hole.

[0010] Preferably, the housing includes a front housing and a rear housing, and a splitter is rotatably provided between the front housing and the rear housing. The front housing and the rear housing are respectively rotatably sleeved on the front and rear sides of the splitter.

[0011] The inlet tube is fixed at the upper end of the front housing, and the outlet tube is fixed at the lower end of the front housing. An inlet cable bundle extending in the left and right directions is fixed on the left side of the inlet tube, and an outlet cable arrangement bundle extending in the left and right directions is fixed on the right side of the outlet tube. Signal lines are threaded through the inside of the inlet cable bundle, and signal splitters are threaded through the inside of the outlet cable arrangement bundle.

[0012] Preferably, the limiting mechanism includes an I-beam wheel inside the upper limiting hole, a first lead screw threaded inside the I-beam wheel, and a clamping assembly driven on the first lead screw, wherein the first lead screw extends in the vertical direction.

[0013] The H-beam wheel includes a rectangular tube extending in the vertical direction and circular limiting discs fixed on the upper and lower sides of the rectangular tube. The rectangular tube is slidably disposed in the upper limiting hole, which is located between the two circular limiting discs.

[0014] The upper end of the first lead screw is fixedly equipped with a rotary handle. Rotating the rotary handle drives the first lead screw to rotate. When the first lead screw rotates, it can drive the clamping assembly to clamp and limit the signal line.

[0015] Preferably, the clamping assembly includes a fixing ring fixed on the circular limiting plate on the lower side and a lifting block threadedly connected to the first lead screw;

[0016] Two upper rods with a front-to-back gap are fixed on the outer side of the fixed ring. The upper rods are oscillating back and forth. Each upper rod has a clamping plate hinged to its lower end. The two clamping plates are respectively hinged to the lifting block. The first screw is used to drive the lifting block to move up and down along the first screw. When the lifting block moves up and down, it drives the two clamping plates and the upper rods to swing in opposite directions at the same time.

[0017] Preferably, the rear sliding assembly includes a movable wheel that slides along the rear side hole and a pull handle fixedly disposed on the rear side of the movable wheel, the pull handle extending in the vertical direction;

[0018] The movable wheel includes a square rod that slides in the rear hole and a limiting plate that is fixed on the front and rear sides of the square rod. The rear hole is located between the two limiting plates.

[0019] The pull handle is fixed to the rear side of the square rod. There are two threaded holes spaced apart on the pull handle. The threaded holes are open from front to back, and the internal threads of the threaded holes are connected to the compression bolts.

[0020] Preferably, the parallel clamping mechanism includes two bidirectional transmission screws spaced vertically apart and a connecting mechanism on the bidirectional transmission screws that can retract and expand, with each bidirectional transmission screw extending in the front-rear direction.

[0021] Each connecting mechanism is hinged with a pressure block, and the two pressure blocks are pressed on the upper and lower sides of the signal splitter.

[0022] Preferably, the connecting mechanism includes two transmission blocks spaced apart front and rear and two rotating rods spaced apart front and rear. One end of each rotating rod is hinged to a pressure block, and the other end of each rotating rod is hinged to a transmission block. A bidirectional transmission screw drives the two rotating rods to rotate in opposite or relative directions.

[0023] The bidirectional transmission screw is provided with a front thread and a rear thread extending in the front and rear directions, respectively. The front thread and the rear thread are arranged in opposite directions, and two transmission blocks are threadedly connected to the front thread and the rear thread, respectively.

[0024] Preferably, a first sprocket is fixedly provided on the front side of each bidirectional transmission screw, and the upper and lower first sprockets are connected by chain drive.

[0025] One of the bidirectional transmission screws has a rotating handle fixed at its front end. The rotating handle is located in front of the first sprocket. The two bidirectional transmission screws cooperate with each other to drive the two transmission blocks to move in opposite directions.

[0026] Preferably, the front sliding assembly includes a sliding wheel that slides along the front side hole and a pull bolt fixed on the front side of the sliding wheel. The internal structure of the front sliding assembly is the same as that of the rear sliding assembly.

[0027] The beneficial effects are: 1. When the signal line enters the inlet tube, the signal line can be clamped and limited by the limiting mechanism, thereby clamping and binding the signal line. This can organize the signal line. Moreover, when the signal branch line comes out of the outlet tube, it can also be clamped and limited by the parallel clamping mechanism, so as to organize multiple signal branch lines and improve the neatness of the signal branch line distribution.

[0028] 2. The front and rear housings allow for rotation based on the orientation of the signal lines and signal splitters, improving efficiency. Additionally, the rear and front sliding components enable the signal lines and signal splitters to be pushed along the connector. Attached Figure Description

[0029] Figure 1This is a schematic diagram of the stereoscopic rear view structure in a specific embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the stereoscopic front view structure in a specific embodiment of the present invention;

[0031] Figure 3 This is a partial cross-sectional structural diagram of the storage shell in a specific embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the transmission structure of the parallel clamping mechanism in a specific embodiment of the present invention;

[0033] Figure 5 This is a specific embodiment of the present invention. Figure 2 A magnified structural diagram at point A;

[0034] Figure 6 This is a specific embodiment of the present invention. Figure 3 A magnified structural diagram at point B.

[0035] In the diagram: 1. Housing; 101. Front housing; 102. Rear housing; 2. Inlet pipe; 3. Outlet pipe; 4. Inlet cable bundle; 5. Outlet cable arrangement bundle; 6. Signal line; 7. Signal splitter; 8. Splitter; 9. H-beam wheel; 901. Rectangular cylinder; 902. Circular limiting plate; 10. First lead screw; 11. Clamping assembly; 1101. Fixing ring; 1102. Lifting block; 12. Rotating handle; 13. Upper rod; 14. Clamping plate; 15. Moving wheel; 1501. Square rod; 1502. Limiting plate; 16. Pull handle; 17. Bidirectional transmission lead screw; 18. Connecting mechanism; 1801. Transmission block; 1802. Rotating rod; 19. Pressure block; 20. First sprocket; 21. Sliding wheel; 22. Pull bolt. Detailed Implementation

[0036] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0037] like Figures 1-6 As shown, a signal line splitter for broadcasting engineering has a front housing 101 and a rear housing 102 that can rotate relative to each other, thereby allowing rotation according to the orientation of the signal line 6 and the signal splitter 7, improving practicality. Specifically, it includes a housing 1, which is a cylindrical frame structure. The upper and lower ends of the housing 1 are respectively fixed with an inlet pipe 2 and an outlet pipe 3, which extend in the left and right directions respectively. Both the inlet pipe 2 and the outlet pipe 3 are connected to the corresponding cables, so that the signal line 6 and the signal splitter 7 can be inserted into the housing 1.

[0038] The housing 1 includes a front housing 101 and a rear housing 102. Both the front housing 101 and the rear housing 102 have insertion holes on their outer sides, so that when the signal line 6 or the signal splitter 7 is moved to the vicinity of the splitter 8, the construction personnel can manually insert the signal line 6 or the signal splitter 7 into the splitter 8. The splitter 8 is rotatably installed between the front housing 101 and the rear housing 102. The front housing 101 and the rear housing 102 are respectively rotatably sleeved on the front and rear sides of the splitter 8. After the signal line 6 and the signal splitter 7 are inserted into the housing 1, they are connected to the splitter 8, so that the signal line 6 is divided into multiple signal splitters 7 for output.

[0039] The inlet tube 2 is fixedly installed at the upper end of the front housing 101, and the outlet tube 3 is fixedly installed at the lower end of the front housing 101. An inlet cable bundle 4 extending in the left and right directions is fixedly installed on the left side of the inlet tube 2, and an outlet cable arrangement bundle 5 extending in the left and right directions is fixedly installed on the right side of the outlet tube 3. A signal line 6 is inserted inside the inlet cable bundle 4, and a signal splitter 7 is inserted inside the outlet cable arrangement bundle 5. The inlet cable bundle 4 and the outlet cable arrangement bundle 5 can limit the signal line 6 and the signal splitter 7 to prevent the signal line 6 and the signal splitter 7 from shifting during insertion.

[0040] The inserted signal line 6 can be clamped by a limiting mechanism, thereby moving the signal line 6 to the outlet of the splitter 8. During this process, it is convenient to clamp and limit the signal line 6. Specifically, multiple upper limiting holes are provided above the connection between the inlet pipe 2 and the housing 1, which are arranged at intervals. The upper limiting holes are open from top to bottom. Each upper limiting hole is equipped with a limiting mechanism. The limiting mechanism is used to clamp and limit the signal line 6. When the limiting mechanism clamps the signal line 6, it can be driven to slide along the upper limiting hole by the rear sliding component.

[0041] The limiting mechanism includes an I-beam wheel 9 inside the upper limiting hole, a first lead screw 10 threadedly connected inside the I-beam wheel 9, and a clamping assembly 11 driven on the first lead screw 10. The first lead screw 10 extends in the vertical direction.

[0042] The H-shaped wheel 9 includes a rectangular tube 901 extending in the vertical direction and circular limiting plates 902 fixed on the upper and lower sides of the rectangular tube 901. The rectangular tube 901 is slidably disposed in the upper limiting hole, which is located between the two circular limiting plates 902. The rectangular tube 901 is designed so that it will not rotate when sliding along the upper limiting hole, thus keeping the clamping assembly 11 in one direction.

[0043] The upper end of the first lead screw 10 is fixedly provided with a rotary handle 12. The rotary handle 12 rotates to drive the first lead screw 10 to rotate. When the first lead screw 10 rotates, it can drive the clamping assembly 11 to clamp and limit the signal line 6, control the rotary handle 12 to rotate, so that the rotary handle 12 drives the first lead screw 10 to rotate.

[0044] The clamping assembly 11 includes a fixing ring 1101 fixed on the circular limiting plate 902 on the lower side and a lifting block 1102 threadedly connected to the first lead screw 10.

[0045] Two upper rods 13 spaced apart are fixed on the outer side of the fixed ring 1101. The upper rods 13 are swaying back and forth. Each upper rod 13 has a clamping plate 14 hinged to its lower end. The two clamping plates 14 are respectively hinged to the lifting block 1102. The first lead screw 10 is used to drive the lifting block 1102 to move up and down along the first lead screw 10. When the lifting block 1102 moves up and down, it drives the two clamping plates 14 and the upper rods 13 to swing in opposite or opposite directions at the same time. When the first lead screw 10 rotates, it can drive the lifting block 1102 to move up and down. When the lifting block 1102 moves, it will drive the upper rods 13 to move in opposite or opposite directions at the same time through the hinge, so that the clamping plates 14 clamp and limit the signal line 6.

[0046] After clamping the signal line 6, the signal line 6 can be moved by the rear sliding component and stopped when it reaches the port of the splitter 8. The signal line 6 can then be plugged in. Specifically, a rear side hole with front and rear penetration is provided at the connection between the inlet tube 2 and the housing 1. The rear side hole is an inverted L-shape. The interior of the rear side hole is provided with a rear sliding component that can slide along the rear side hole. The rear sliding component is used to drive the limiting mechanism to slide along the upper limiting hole.

[0047] The rear sliding assembly includes a movable wheel 15 that slides along the rear side hole and a pull handle 16 fixedly disposed on the rear side of the movable wheel 15. The pull handle 16 extends in the vertical direction and controls the pull handle 16 to slide to one side, which can drive the movable wheel 15 to move to one side along the rear side hole.

[0048] The movable wheel 15 includes a square rod 1501 that is slidably disposed in the rear hole and a limiting plate 1502 that is fixedly disposed on the front and rear sides of the square rod 1501. The rear hole is located between the two limiting plates 1502.

[0049] The pull handle 16 is fixedly installed on the rear side of the square rod 1501. The pull handle 16 has two threaded holes spaced apart vertically. The threaded holes are open from front to back. The internal threads of the threaded holes are connected to a compression bolt. When the moving wheel 15 moves to the appropriate position, the compression bolt restricts the moving wheel 15 and prevents it from sliding.

[0050] After the signal splitter 7 is inserted into the splitter 8, it can be clamped and limited by the parallel clamping mechanism to restrict the multiple signal splitters 7 and improve the neatness of the distribution of the signal splitters 7. Specifically, a lower limit hole with vertical penetration is provided below the connection between the outlet tube 3 and the housing 1. The lower limit hole is provided with a parallel clamping mechanism, which is used to clamp and limit the signal line 6 after splitting.

[0051] The parallel clamping mechanism includes two bidirectional transmission screws 17 spaced apart vertically (the bidirectional transmission screws 17 are bidirectional ball screws) and a connecting mechanism 18 that can retract and expand on the bidirectional transmission screws 17. Each bidirectional transmission screw 17 extends in the front-rear direction. When the bidirectional transmission screw 17 rotates, it can drive the two transmission blocks 1801 to move in opposite or relative directions. Both ends of the bidirectional transmission screw 17 are slidably connected to the interior of the front housing 101.

[0052] Each connecting mechanism 18 is hinged with a pressure block 19, and the two pressure blocks 19 are pressed on the upper and lower sides of the signal splitter 7.

[0053] The connecting mechanism 18 includes two front-to-back spaced transmission blocks 1801 and two front-to-back spaced rotating rods 1802. One end of each rotating rod 1802 is hinged to a pressure block 19, and the other end of each rotating rod 1802 is hinged to a transmission block 1801. The bidirectional transmission screw 17 drives the two rotating rods 1802 to flip in opposite or relative directions. When the two transmission blocks 1801 move, they will drive the rotating rods 1802 to flip in opposite or relative directions. During the rotation of the rotating rods 1802, they will drive the two pressure blocks 19 to retract inward simultaneously, clamping and limiting the signal splitter 7.

[0054] The bidirectional transmission screw 17 is provided with a front thread and a rear thread extending in the front and rear directions, respectively. The front thread and the rear thread are arranged in opposite directions, and two transmission blocks 1801 are threadedly connected to the front thread and the rear thread, respectively.

[0055] Each bidirectional drive screw 17 has a first sprocket 20 fixed on its front side. The upper and lower first sprockets 20 are connected by a chain drive. At the same time, one of the bidirectional drive screws 17 rotates under the action of the rotating handle. When it rotates, it drives the first sprocket 20 to rotate. Then, it drives the other bidirectional drive screw 17 to rotate through the chain, so that the two pressure blocks 19 contract and open at the same time.

[0056] One of the bidirectional transmission screws 17 has a rotating handle fixedly installed at its front end. The front housing 101 has an elongated hole that is open from front to back. The rotating handle is slidably installed in the elongated hole and is located in front of the first sprocket 20. The two bidirectional transmission screws 17 cooperate with each other to drive the two transmission blocks 1801 to move in opposite directions. Controlling the rotating handle can drive one of the bidirectional transmission screws 17 to rotate.

[0057] A front side hole with front and rear penetration is provided at the connection between the outlet tube 3 and the housing 1. The front side hole is an inverted L-shape. Inside the front side hole is a front sliding component that can slide along the front side hole. The front sliding component is used to drive the parallel clamping mechanism to slide along the lower limit hole. The connection structure of the front sliding component and the rear sliding component is the same, so it can drive the parallel clamping mechanism to slide, which is convenient for clamping the signal splitter 7.

[0058] The front sliding assembly includes a sliding wheel 21 that slides along the front side hole and a bolt 22 fixed on the front side of the sliding wheel 21. The internal structure of the front sliding assembly is the same as that of the rear sliding assembly. Pulling the bolt 22 can drive the sliding wheel 21 to slide along the front side hole.

[0059] In use, insert the signal line 6 and the signal splitter 7 into the inlet pipe 2 and the outlet pipe 3 respectively. Then insert the signal line 6 into the limiting mechanism. Control the rotation of the handle 12, which will cause the first lead screw 10 to rotate. When the lifting block 1102 moves up and down, it will cause the two clamping plates 14 and the upper rod 13 to swing in opposite or opposite directions at the same time. When the first lead screw 10 rotates, it can drive the lifting block 1102 to move up and down. When the lifting block 1102 moves, it will drive the upper rod 13 to move in opposite or opposite directions at the same time through the hinge. This will cause the clamping plate 14 to clamp and limit the signal line 6. After clamping, control the pull handle 16 to slide to one side, which will drive the moving wheel 15 to move to one side along the rear hole. When the moving wheel 15 moves to the appropriate position, the moving wheel 15 will be limited by the squeeze bolt. Manually insert the signal line 6 into the splitter 8.

[0060] After inserting the signal branch line 7 of the parallel clamping mechanism, the controllable rotating handle can drive one of the bidirectional transmission screws 17 to rotate. When the bidirectional transmission screw 17 rotates, it can drive the two transmission blocks 1801 to move, which will drive the rotating rod 1802 to flip in opposite or relative directions. During the rotation of the rotating rod 1802, it will drive the two pressure blocks 19 to retract inward at the same time, clamping and limiting the signal branch line 7. At the same time, one of the bidirectional transmission screws 17 rotates under the action of the rotating handle, which will drive the first sprocket 20 to rotate. Then, it will drive the other bidirectional transmission screw 17 to rotate through the chain, so that the two pressure blocks 19 will retract and open at the same time. Then, pulling the bolt 22 can drive the sliding wheel 21 to slide along the front hole, so that the signal branch line 7 can be plugged into the splitter 8 for use.

[0061] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A signal line splitter for broadcasting engineering, characterized in that, It includes a housing (1), which is a cylindrical frame structure. The upper and lower ends of the housing (1) are respectively fixed with an inlet pipe (2) and an outlet pipe (3), which extend in the left and right directions respectively. A number of upper limit holes are provided above the connection between the inlet pipe (2) and the housing (1), with the upper limit holes being open from top to bottom. Each upper limit hole is equipped with a limit mechanism, which is used to clamp and limit the signal line. A rear side hole with front and rear penetration is provided at the connection between the inlet pipe (2) and the housing (1). The rear side hole is an inverted L-shape. The interior of the rear side hole is provided with a rear sliding component that can slide along the rear side hole. The rear sliding component is used to drive the limiting mechanism to slide along the upper limiting hole. A lower limiting hole with vertical penetration is provided below the connection between the outlet tube (3) and the housing (1). The lower limiting hole is provided with a parallel clamping mechanism, which is used to clamp and limit the signal line (6) after the split. A front side hole with front and rear penetration is provided at the connection between the outlet tube (3) and the housing (1). The front side hole is an inverted L-shape. The interior of the front side hole is provided with a front sliding component that can slide along the front side hole. The front sliding component is used to drive the parallel clamping mechanism to slide along the lower limiting hole.

2. A signal line splitter for broadcasting engineering according to claim 1, characterized in that, The housing (1) includes a front housing (101) and a rear housing (102). A splitter (8) is rotatably provided between the front housing (101) and the rear housing (102). The front housing (101) and the rear housing (102) are respectively rotatably sleeved on the front and rear sides of the splitter (8). The inlet tube (2) is fixedly installed at the upper end of the front housing (101), and the outlet tube (3) is fixedly installed at the lower end of the front housing (101). An inlet bundle tube (4) extending in the left and right directions is fixedly installed on the left side of the inlet tube (2), and an outlet arrangement bundle tube (5) extending in the left and right directions is fixedly installed on the right side of the outlet tube (3). A signal line (6) is passed through the inside of the inlet bundle tube (4), and a signal splitter (7) is passed through the inside of the outlet arrangement bundle tube (5).

3. A signal line splitter for broadcasting engineering according to claim 1, characterized in that, The limiting mechanism includes a bobbin (9) inside the upper limiting hole, a first lead screw (10) threaded inside the bobbin (9), and a clamping assembly (11) driven on the first lead screw (10). The first lead screw (10) extends in the vertical direction. The H-beam wheel (9) includes a rectangular tube (901) extending in the vertical direction and a circular limiting plate (902) fixed on the upper and lower sides of the rectangular tube (901). The rectangular tube (901) is slidably disposed in the upper limiting hole, which is located between the two circular limiting plates (902). The upper end of the first lead screw (10) is fixedly provided with a rotary handle (12). The rotary handle (12) rotates to drive the first lead screw (10) to rotate. When the first lead screw (10) rotates, it can drive the clamping assembly (11) to clamp and limit the signal line (6).

4. A signal line splitter for broadcasting engineering according to claim 3, characterized in that, The clamping assembly (11) includes a fixing ring (1101) fixed on a circular limiting plate (902) on the lower side and a lifting block (1102) threadedly connected to the first lead screw (10); Two upper rods (13) with a front-to-back gap are fixed on the outside of the fixed ring (1101). The upper rods (13) are swaying back and forth. Each upper rod (13) has a clamp (14) hinged to its lower end. The two clamps (14) are respectively hinged to the lifting block (1102). The first screw (10) is used to drive the lifting block (1102) to move up and down along the first screw (10). When the lifting block (1102) moves up and down, it drives the two clamps (14) and the upper rods (13) to swing in opposite directions at the same time.

5. A signal line splitter for broadcasting engineering according to claim 1, characterized in that, The rear sliding assembly includes a movable wheel (15) that slides along the rear side hole and a pull handle (16) fixedly disposed on the rear side of the movable wheel (15). The pull handle (16) extends in the vertical direction. The movable wheel (15) includes a square rod (1501) that slides in the rear hole and a limiting plate (1502) that is fixed on the front and rear sides of the square rod (1501). The rear hole is located between the two limiting plates (1502). The pull handle (16) is fixedly installed on the rear side of the square rod (1501). The pull handle (16) has two threaded holes spaced apart vertically. The threaded holes are open from front to back, and the internal threads of the threaded holes are connected to the compression bolts.

6. A signal line splitter for broadcasting engineering according to claim 2, characterized in that, The parallel clamping mechanism includes two bidirectional transmission screws (17) spaced apart vertically and a connecting mechanism (18) on the bidirectional transmission screws (17) that can retract and open, each bidirectional transmission screw (17) extending in the front-back direction; Each connecting mechanism (18) is hinged with a pressure block (19), and the two pressure blocks (19) are pressed on the upper and lower sides of the signal splitter (7).

7. A signal line splitter for broadcasting engineering according to claim 6, characterized in that, The connecting mechanism (18) includes two front-to-back spaced transmission blocks (1801) and two front-to-back spaced rotating rods (1802). One end of each rotating rod (1802) is hinged to the pressure block (19), and the other end of each rotating rod (1802) is hinged to the transmission block (1801). The bidirectional transmission screw (17) drives the two rotating rods (1802) to flip in opposite or relative directions. The bidirectional transmission screw (17) is provided with a front thread and a rear thread extending in front and back respectively. The front thread and the rear thread are arranged in opposite directions. Two transmission blocks (1801) are threadedly connected to the front thread and the rear thread respectively.

8. A signal line splitter for broadcasting engineering according to claim 7, characterized in that, Each bidirectional drive screw (17) is fixedly provided with a first sprocket (20) on its front side, and the upper and lower first sprockets (20) are connected by chain drive. One of the bidirectional transmission screws (17) has a rotating handle fixed at its front end. The rotating handle is located in front of the first sprocket (20). The two bidirectional transmission screws (17) cooperate with each other to drive the two transmission blocks (1801) to move in opposite directions or in the opposite direction.

9. A signal line splitter for broadcasting engineering according to claim 5, characterized in that, The front sliding assembly includes a sliding wheel (21) that slides along the front side hole and a bolt (22) fixed on the front side of the sliding wheel (21). The internal structure of the front sliding assembly is the same as that of the rear sliding assembly.

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