Multifunctional ground wire for overhead line

Abstract

The invention discloses an overhead line multifunctional ground wire, and relates to the technical field of ground wire devices, and the overhead line multifunctional ground wire comprises an outer box body, the interior of the outer box body is fixedly connected with a main partition plate, the interior of the main partition plate is provided with a flow hole, the interior of the flow hole is fixedly connected with a fixed plate, and one side of the fixed plate is provided with a central cylinder. A cable guide column is arranged on the side wall of the fixing plate, a groove is formed in the outer side wall of the cable guide column, a short groove is formed in the groove, an assembly shell is fixedly connected to the outer side of the center column body, a sliding plate is slidably connected to the interior of the assembly shell, and an elastic spring is arranged in the assembly shell. And the two ends of the elastic spring are fixedly connected to the sliding plate and the assembly shell respectively, so that the technical problems that the electric wire needs to be worn for multiple times due to the fact that the electric wire needs to be pulled out and stored frequently during working, normal use of the electric wire is affected after the electric wire is worn to a certain degree, and the overall service life of the device is shortened are solved.

Description

Technical Field

[0001] The invention relates to the technical field of ground connection devices, in particular to a multifunctional ground connection for overhead lines. Background Art

[0002] Overhead line multifunctional ground wire usually refers to the ground wire with multiple functions used in overhead transmission lines, that is, overhead ground wire (or lightning arrester). Overhead transmission lines are an important part of the power system. They are responsible for transmitting electricity from power plants to users. However, since transmission lines usually span a wide area and are exposed to the natural environment, they are vulnerable to various natural factors, among which lightning strikes are one of the main threats. In order to reduce the impact of lightning strikes on transmission lines and improve the safety of line operation, people have designed overhead ground wires.

[0003] After searching, the patent document (authorization announcement number is CN 112838395 A) is a portable multifunctional grounding wire for overhead lines, including a base and a grounding wire body, and a storage box is fixed horizontally above the base. The multifunctional grounding wire, by setting a grounding cone, enables the bottom end of the grounding wire body to be tightly connected to the ground, effectively preventing the lower end of the grounding wire body from being separated from the ground due to swinging, resulting in the inability to transmit electricity and affecting work; by setting a grounding groove on the bottom surface of the base, the grounding cone can be stored in the grounding groove through a double-headed screw, thereby improving the portability of the overhead grounding wire; by setting a storage box, the grounding wire body is easy to store, effectively avoiding the grounding wire body being too long and exposed to the outside, affecting the construction process, and improving the cleanliness of the surface of the grounding wire body; by setting a length limit plate, the length of the grounding wire body outside can be adjusted independently, thereby improving its practicality.

[0004] However, the above device still has shortcomings:

[0005] When working, the wires need to be pulled out and stored frequently, which causes the wires to experience multiple wear. When the wear reaches a certain level, it will affect the normal use of the wires and reduce the overall service life of the device. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a multifunctional wiring for overhead lines, which solves the problem that the wires need to be frequently pulled out and stored during work, which causes the wires to experience multiple wears. When the wear reaches a certain degree, it will affect the normal use of the wires and reduce the overall service life of the device.

[0007] To achieve the above-mentioned purpose, the present invention proposes a multifunctional ground connection for overhead lines, comprising an outer box body, a main partition plate is fixedly connected to the interior of the outer box body, a flow hole is opened inside the main partition plate, a fixed plate is fixedly connected to the interior of the flow hole, a central column is arranged on one side of the fixed plate, a cable guide column is arranged on the side wall of the fixed plate, a groove is opened on the outer wall of the cable guide column, a short groove is opened inside the groove, a component housing is fixedly connected to the outer side of the central column, a slide plate is slidably connected to the interior of the component housing, an elastic spring is arranged inside the component housing, two ends of the elastic spring are respectively fixedly connected to the slide plate and the component housing, a blocking rod is fixedly connected to the side of the slide plate away from the elastic spring, the blocking rod is inserted in the short groove, and a plurality of leakage holes are opened on the side wall of the component housing.

[0008] Preferably, the bottom of the cable guide column and the end of the center column are both engraved with a first clamping workpiece, the fixed plate and the cable guide column are clamped by the first clamping workpiece, the center column and the cable guide column are clamped by the first clamping workpiece, and a resistance rod is fixedly connected to the side of the slide plate away from the elastic spring, and the resistance rod and the blocking rod are arranged on the same side.

[0009] Preferably, a bottom bracket is fixedly connected to the bottom of the outer box body, a non-slip pad is fixedly connected to the bottom of the bottom bracket, and a square groove is formed at the bottom of the outer box body.

[0010] Preferably, a secondary partition is fixedly connected to a side of the main partition away from the cable guide column, a wire hole is opened on the side wall of the outer box body, the wire hole is arranged below the secondary partition, and the flow hole is arranged above the main partition.

[0011] Preferably, a conduit is fixedly connected to the interior of the fixing plate, the other end of the conduit is fixedly connected to the component housing, a torsion spring is sleeved on the outer side of the central column, and both ends of the torsion spring are respectively fixedly connected to the cable guide column and the component housing.

[0012] Preferably, a protective inner shell is fixedly connected to the interior of the component shell, and the slide plate, the blocking rod and the elastic spring are all arranged in the protective inner shell.

[0013] Preferably, an outlet is provided on the side wall of the outer box body, and the side wall of the outer box body is fixedly connected to a limiting shell, an inner bottom of the limiting shell is fixedly connected to a resistance block, the top of the limiting shell is threadedly connected to a driving rod, and a driving thread is engraved on the side wall of the driving rod, one end of the driving rod arranged in the limiting shell is rotatably connected to the limiting block, and the side of the limiting block close to the resistance block is fixedly connected to the limiting tooth.

[0014] Preferably, the inner bottom of the outer box body is fixedly connected to a tooling shell, the tooling shell is arranged above the square groove, the interior of the tooling shell is fixedly connected to a center block, the side wall of the tooling shell is threadedly connected to a bidirectional threaded rod, the bidirectional threaded rod is rotatably connected in the center block, the side wall of the bidirectional threaded rod is fixedly connected to a second clamping workpiece, and the second clamping workpiece is clamped in the side wall of the tooling shell.

[0015] Preferably, a toothed disc is rotatably connected inside the tooling shell, the toothed disc is meshed with the bidirectional threaded rod, a plug rod is fixedly connected to the side wall of the toothed disc, and a multi-section elastic telescopic rod is fixedly connected inside the tooling shell, and the multi-section elastic telescopic rod is arranged below the plug rod.

[0016] Preferably, the bottom of the center block is fixedly connected to an inner shell body, the side wall of the two-way threaded rod at one end of which is provided in the center block is sleeved with a rope, the interior of the inner shell body is fixedly connected to a guide rod, the rope is sleeved on the side wall of the guide rod, the interior of the inner shell body is fixedly connected to a center plate, the side wall of the inner shell body is slidably connected to an anti-stab protection rod, one end of the rope away from the two-way threaded rod is fixedly connected to the anti-stab protection rod, a return spring is provided inside the inner shell body, and both ends of the return spring are respectively fixedly connected to the anti-stab protection rod and the center plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the cable is pulled out of the outer box, if the surface of the cable is smooth, the friction between the cable and the cable guide column is reduced, resulting in the cable being unable to drive the cable guide column to rotate, and the leakage hole will be blocked by the inner wall of the cable guide column, resulting in the lubricating fluid inside being unable to flow out. When the friction on the surface of the cable increases due to long-term friction, the cable will drive the cable guide column to rotate. At this time, the blocking rod will be separated from the short groove, and the leakage hole will be connected to the short groove. At this time, the lubricating fluid in the cable guide column can flow into the groove through the short groove to achieve the lubrication effect, which can greatly reduce the wear of the cable and effectively increase the service life of the cable. In addition, the device automatically lubricates through friction, which can reduce the labor of the staff and only lubricates when the friction is large, which can effectively reduce the waste of lubricating fluid and improve the lubrication effect.

[0019] 2. When the device is not in use, the insertion rod is stored in the tooling shell. At this time, the tip of the tooling shell is blocked by the anti-stab protection rod to prevent the tip of the tooling shell from stabbing the staff. When the device is in use, the two-way threaded rod rotates, and the rope will slowly wrap around the two-way threaded rod. The rope pulls the anti-stab protection rod to retract it into the inner shell. At this time, the insertion rod loses the obstruction of the anti-stab protection rod and can be normally extended out of the tooling shell, and then installed in a suitable position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the back structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the cable guide column of the present invention;

[0024] Figure 5 It is a schematic diagram of the internal structure of the limiting housing of the present invention;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the component housing of the present invention;

[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of the tool housing of the present invention;

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the inner shell of the present invention.

[0028] In the figure: 1, outer box; 101, bottom bracket; 102, anti-skid pad; 103, square groove; 2, main partition; 201, wire hole; 202, secondary partition; 3, cable guide column; 301, groove; 302, fixing plate; 303, central column; 304, first clamping workpiece; 305, guide tube; 306, torsion spring; 307, flow hole; 4, component housing; 401, slide plate; 402, short groove; 403, blocking rod; 404, elastic spring; 405, resistance rod; 406, leakage Hole; 5. Limiting shell; 501. Exit; 502. Resistance block; 503. Driving rod; 504. Driving thread; 505. Limiting block; 506. Limiting tooth; 6. Tool shell; 601. Center block; 602. Bidirectional threaded rod; 603. Second clamping workpiece; 604. Toothed disc; 605. Inserting rod; 606. Multi-section elastic telescopic rod; 7. Inner shell; 701. Anti-puncture protection rod; 702. Rope; 703. Guide rod; 704. Center plate; 705. Return spring; 8. Protect inner shell. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1-8As shown, a multifunctional ground connection for overhead lines comprises an outer box 1, a bottom bracket 101 is fixedly connected to the bottom of the outer box 1, a non-slip pad 102 is fixedly connected to the bottom of the bottom bracket 101, and a square groove 103 is opened at the bottom of the outer box 1.

[0031] A secondary partition 202 is fixedly connected to a side of the main partition 2 away from the cable guide column 3 , and a wire hole 201 is opened on the side wall of the outer box body 1 , and the wire hole 201 is arranged below the secondary partition 202 .

[0032] A large amount of lubricating liquid is stored above the secondary partition 202 , and the lubricating liquid flows into the flow hole 307 , wherein a pump body may be installed outside the flow hole 307 to prevent the lubricating liquid from failing to flow into the flow hole 307 .

[0033] The redundant wires are placed under the secondary partition 202 , with the ends of the wires extending to the other side of the main partition 2 through the wire hole 201 , then being sleeved on the outside of the cable guide column 3 , and finally extending out of the outer box 1 through the outlet 501 .

[0034] In the present embodiment, specifically, the main partition plate 2 is fixedly connected to the inside of the outer box body 1, a flow hole 307 is provided inside the main partition plate 2, the flow hole 307 is arranged above the main partition plate 2, the fixed plate 302 is fixedly connected to the inside of the flow hole 307, a central column 303 is provided on one side of the fixed plate 302, a cable guide column 3 is provided on the side wall of the fixed plate 302, a groove 301 is provided on the outer wall of the cable guide column 3, a short groove 402 is provided inside the groove 301, the outer side of the central column 303 is fixedly connected to the component housing 4, a slide plate 401 is slidably connected to the inside of the component housing 4, an elastic spring 404 is provided inside the component housing 4, both ends of the elastic spring 404 are respectively fixedly connected to the slide plate 401 and the component housing 4, a blocking rod 403 is fixedly connected to the side of the slide plate 401 away from the elastic spring 404, the blocking rod 403 is inserted into the short groove 402, and a plurality of leakage holes 406 are provided on the side wall of the component housing 4.

[0035] When the cable is pulled out of the outer box body 1, if the surface of the cable is smooth, the friction between the cable and the cable guide column 3 is reduced, resulting in the cable being unable to drive the cable guide column 3 to rotate, and the leakage hole 406 will be blocked by the inner wall of the cable guide column 3, resulting in the lubricating fluid inside it being unable to flow out. When the friction on the surface of the cable increases due to long-term friction, the cable will drive the cable guide column 3 to rotate. At this time, the blocking rod 403 will be separated from the short groove 402, and the leakage hole 406 will be connected to the short groove 402. At this time, the lubricating fluid in the cable guide column 3 can flow into the groove 301 through the short groove 402 to achieve the lubrication effect. This can greatly reduce the wear of the cable and effectively increase the service life of the cable. In addition, the device automatically performs lubrication through friction, which can reduce the labor of the staff and only lubricates when the friction is large, which can effectively reduce the waste of lubricating fluid and improve the lubrication effect.

[0036] When the groove 301 becomes smooth due to the lubricating effect of the lubricating liquid, the friction between the cable guide column 3 and the cable is reduced, and the cable cannot drive the cable guide column 3 to rotate. The cable guide column 3 returns to its original position under the action of the torsional elastic force of the torsion spring 306. At this time, the blocking rod 403 will extend into the short groove 402 again to prevent the lubricating liquid from flowing out.

[0037] In the present embodiment, specifically, the bottom of the cable guide column 3 and the end of the central column 303 are both engraved with a first clamping workpiece 304, the fixing plate 302 and the cable guide column 3 are clamped by the first clamping workpiece 304, the central column 303 and the cable guide column 3 are clamped by the first clamping workpiece 304, and the side of the slide plate 401 away from the elastic spring 404 is fixedly connected with a resistance rod 405, and the resistance rod 405 and the blocking rod 403 are arranged on the same side.

[0038] In this embodiment, specifically, a conduit 305 is fixedly connected to the interior of the fixing plate 302, the other end of the conduit 305 is fixedly connected to the component housing 4, a torsion spring 306 is sleeved on the outer side of the central column 303, and the two ends of the torsion spring 306 are respectively fixedly connected to the cable guide column 3 and the component housing 4.

[0039] In this embodiment, specifically, the interior of the component outer shell 4 is fixedly connected with a protective inner shell 8 , and the slide plate 401 , the blocking rod 403 and the elastic spring 404 are all arranged in the protective inner shell 8 .

[0040] In the present embodiment, specifically, an outlet 501 is provided on the side wall of the outer box body 1, the side wall of the outer box body 1 is fixedly connected to a limiting shell 5, an inner bottom of the limiting shell 5 is fixedly connected to a resistance block 502, the top of the limiting shell 5 is threadedly connected to a driving rod 503, a driving thread 504 is engraved on the side wall of the driving rod 503, one end of the driving rod 503 arranged in the limiting shell 5 is rotatably connected to a limiting block 505, and a side of the limiting block 505 close to the resistance block 502 is fixedly connected to a limiting tooth 506.

[0041] In the present embodiment, specifically, the inner bottom of the outer box body 1 is fixedly connected with a tooling shell 6, the tooling shell 6 is arranged above the square groove 103, the interior of the tooling shell 6 is fixedly connected with a center block 601, the side wall of the tooling shell 6 is threadedly connected with a bidirectional threaded rod 602, the bidirectional threaded rod 602 is rotatably connected in the center block 601, the side wall of the bidirectional threaded rod 602 is fixedly connected with the second clamping workpiece 603, and the second clamping workpiece 603 is clamped in the side wall of the tooling shell 6.

[0042] In this embodiment, specifically, the interior of the tooling shell 6 is rotatably connected to a toothed disc 604, the toothed disc 604 is meshed with the bidirectional threaded rod 602, the side wall of the toothed disc 604 is fixedly connected to an insertion rod 605, and the interior of the tooling shell 6 is fixedly connected to a multi-section elastic telescopic rod 606, which is arranged below the insertion rod 605.

[0043] In the present embodiment, specifically, the bottom of the center block 601 is fixedly connected with the inner shell 7, the bidirectional threaded rod 602 is arranged on the side wall of one end of the center block 601 and is sleeved with a rope 702, the interior of the inner shell 7 is fixedly connected with a guide rod 703, the rope 702 is sleeved on the side wall of the guide rod 703, the interior of the inner shell 7 is fixedly connected with a center plate 704, the side wall of the inner shell 7 is slidably connected with a stab-proof protection rod 701, one end of the rope 702 away from the bidirectional threaded rod 602 is fixedly connected to the stab-proof protection rod 701, and a return spring 705 is arranged inside the inner shell 7, and the two ends of the return spring 705 are respectively fixedly connected to the stab-proof protection rod 701 and the center plate 704.

[0044] When the device is not in use, the insertion rod 605 is stored in the tooling shell 6. At this time, the pointed end of the tooling shell 6 is blocked by the anti-stab protection rod 701 to prevent the pointed end of the tooling shell 6 from stabbing the staff. When the device is in use, the bidirectional threaded rod 602 rotates, and the rope 702 will slowly wrap around the bidirectional threaded rod 602. The rope 702 pulls the anti-stab protection rod 701 to retract it into the inner shell 7. At this time, the insertion rod 605 loses the obstruction of the anti-stab protection rod 701 and can be normally extended out of the tooling shell 6, and then installed in a suitable position.

[0045] Working principle: when the cable is pulled out of the outer box 1, if the surface of the cable is smooth, the friction between the cable and the cable guide column 3 is reduced, resulting in the cable being unable to drive the cable guide column 3 to rotate, and the leakage hole 406 will be blocked by the inner wall of the cable guide column 3, resulting in the lubricating fluid inside it being unable to flow out. When the friction on the surface of the cable increases due to long-term friction, the cable will drive the cable guide column 3 to rotate. At this time, the blocking rod 403 will be separated from the short groove 402, and the leakage hole 406 will be connected to the short groove 402. At this time, the lubricating fluid in the cable guide column 3 can flow into the groove 301 through the short groove 402 to achieve the lubrication effect. This can greatly reduce the wear of the cable and effectively increase the service life of the cable. In addition, the device automatically performs lubrication through friction, which can reduce the labor of the staff and only lubricates when the friction is large, which can effectively reduce the waste of lubricating fluid and improve the lubrication effect.

[0046] When the groove 301 becomes smooth due to the lubricating effect of the lubricating liquid, the friction between the cable guide column 3 and the cable is reduced, and the cable cannot drive the cable guide column 3 to rotate. The cable guide column 3 returns to its original position under the action of the torsional elastic force of the torsion spring 306. At this time, the blocking rod 403 will extend into the short groove 402 again to prevent the lubricating liquid from flowing out.

[0047] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A multifunctional ground connection for overhead lines, characterized in that: The invention comprises an outer box body (1), wherein a main partition plate (2) is fixedly connected to the inside of the outer box body (1), a flow hole (307) is provided inside the main partition plate (2), a fixing plate (302) is fixedly connected to the inside of the flow hole (307), a central column (303) is provided on one side of the fixing plate (302), a cable guide column (3) is provided on the side wall of the fixing plate (302), a groove (301) is provided on the outer side wall of the cable guide column (3), a short groove (402) is provided inside the groove (301), and the central column (303) is provided on the side wall of the fixing plate (302). 3) is fixedly connected to the outer side of a component housing (4), the interior of the component housing (4) is slidably connected to a slide plate (401), an elastic spring (404) is arranged inside the component housing (4), the two ends of the elastic spring (404) are respectively fixedly connected to the slide plate (401) and the component housing (4), a blocking rod (403) is fixedly connected to the side of the slide plate (401) away from the elastic spring (404), the blocking rod (403) is inserted into the short groove (402), and a side wall of the component housing (4) is provided with a plurality of leakage holes (406).

2. The multifunctional ground connection for overhead lines according to claim 1, characterized in that: The bottom of the cable guide column (3) and the end of the central column (303) are both engraved with a first clamping workpiece (304); the fixing plate (302) and the cable guide column (3) are clamped by the first clamping workpiece (304); the central column (303) and the cable guide column (3) are clamped by the first clamping workpiece (304); a resistance rod (405) is fixedly connected to the side of the slide plate (401) away from the elastic spring (404); the resistance rod (405) and the blocking rod (403) are arranged on the same side.

3. The multifunctional ground connection for overhead lines according to claim 1, characterized in that: The bottom of the outer box (1) is fixedly connected to a bottom bracket (101), the bottom of the bottom bracket (101) is fixedly connected to an anti-slip pad (102), and the bottom of the outer box (1) is provided with a square groove (103).

4. The multifunctional ground connection for overhead lines according to claim 2, characterized in that: A secondary partition (202) is fixedly connected to the side of the main partition (2) away from the cable guide column (3), a wire hole (201) is opened on the side wall of the outer box body (1), the wire hole (201) is arranged below the secondary partition (202), and the flow hole (307) is arranged above the main partition (2).

5. The multifunctional ground connection for overhead lines according to claim 1, characterized in that: A conduit (305) is fixedly connected to the interior of the fixing plate (302), and the other end of the conduit (305) is fixedly connected to the component housing (4). A torsion spring (306) is sleeved on the outer side of the central column (303), and the two ends of the torsion spring (306) are respectively fixedly connected to the cable guide column (3) and the component housing (4).

6. The multifunctional ground connection for overhead lines according to claim 5, characterized in that: The interior of the component outer shell (4) is fixedly connected to a protective inner shell (8), and the slide plate (401), the blocking rod (403) and the elastic spring (404) are all arranged inside the protective inner shell (8).

7. The multifunctional ground connection for overhead lines according to claim 6, characterized in that: The side wall of the outer box body (1) is provided with an outlet (501), the side wall of the outer box body (1) is fixedly connected to a limit housing (5), the inner bottom of the limit housing (5) is fixedly connected to a resistance block (502), the top of the limit housing (5) is threadedly connected to a driving rod (503), the side wall of the driving rod (503) is engraved with a driving thread (504), one end of the driving rod (503) arranged in the limit housing (5) is rotatably connected to the limit block (505), and the side of the limit block (505) close to the resistance block (502) is fixedly connected to the limit tooth (506).

8. The multifunctional ground connection for overhead lines according to claim 1, characterized in that: The inner bottom of the outer box body (1) is fixedly connected to a tool shell (6), the tool shell (6) is arranged above the square groove (103), the interior of the tool shell (6) is fixedly connected to a center block (601), the side wall of the tool shell (6) is threadedly connected to a bidirectional threaded rod (602), the bidirectional threaded rod (602) is rotatably connected in the center block (601), the side wall of the bidirectional threaded rod (602) is fixedly connected to a second clamping workpiece (603), and the second clamping workpiece (603) is clamped in the side wall of the tool shell (6).

9. The multifunctional ground connection for overhead lines according to claim 8, characterized in that: The tool housing (6) is rotatably connected to a toothed disc (604) inside, the toothed disc (604) and the bidirectional threaded rod (602) are mutually meshed, the side wall of the toothed disc (604) is fixedly connected to an insertion rod (605), and the tool housing (6) is fixedly connected to a multi-section elastic telescopic rod (606) inside, and the multi-section elastic telescopic rod (606) is arranged below the insertion rod (605).

10. The multifunctional ground connection for overhead lines according to claim 9, characterized in that: The bottom of the center block (601) is fixedly connected to an inner shell (7); the bidirectional threaded rod (602) is arranged in the center block (601) and a rope (702) is sleeved on the side wall of one end thereof; the inner shell (7) is fixedly connected to a guide rod (703) inside; the rope (702) is sleeved on the side wall of the guide rod (703); the inner shell (7) is fixedly connected to a center plate (704) inside; the side wall of the inner shell (7) is slidably connected to an anti-stab protection rod (701); one end of the rope (702) away from the bidirectional threaded rod (602) is fixedly connected to the anti-stab protection rod (701); a return spring (705) is arranged inside the inner shell (7); two ends of the return spring (705) are respectively fixedly connected to the anti-stab protection rod (701) and the center plate (704).

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