CN210032849U

CN210032849U - Power transmission and distribution composite material cross arm tooling hardware fitting

Info

Publication number: CN210032849U
Application number: CN201920778888.XU
Authority: CN
Inventors: 赵倩倩; 鹿璐; 谢亚云; 崔建刚
Original assignee: Information and Telecommunication Branch of State Grid Shanxi Electric Power Co Ltd
Current assignee: Information and Telecommunication Branch of State Grid Shanxi Electric Power Co Ltd
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-02-07
Anticipated expiration: 2029-05-28

Abstract

The utility model discloses a power transmission and distribution composite material cross arm tooling hardware fitting, which comprises a supporting device, wherein the top of the supporting device is provided with a hoop strip, a tower is arranged between the supporting device and the hoop strip, and the right end of the supporting device is provided with an insulator fixing seat; through the insulator mount pad, controlling means, rotating device, the cooperation of embracing the lath, the person of facilitating the installation installs this transmission and distribution combined material cross arm frock gold utensil, need not carry extra instrument, the operation degree of difficulty is little, the security performance further improves, through controlling means, the inclination of person of facilitating the installation adjustment insulator mount pad, through stop device, the inclination of person of facilitating the installation adjustment insulator fixing base, make the installer can install the insulator on insulator fixing base and insulator mount pad fast and adjust the inclination of insulator, the installation rate is fast, further reduce the operation degree of difficulty, the practicality of this transmission and distribution combined material cross arm frock gold utensil has been improved.

Description

Power transmission and distribution composite material cross arm tooling hardware fitting

Technical Field

The utility model relates to a power transmission and distribution combined material cross arm frock gold utensil field, more specifically says, relates to a power transmission and distribution combined material cross arm frock gold utensil.

Background

The cross arm is an important component in a pole tower, is used for installing insulators and hardware fittings to support a conducting wire and a lightning conductor and keep a certain safe distance according to the regulations, can be divided into an iron cross arm, a ceramic cross arm, a composite material cross arm and the like according to different manufacturing materials, has the advantages of good antifouling performance, environmental corrosion resistance, light weight, easiness in installation and maintenance, and is most widely used.

The existing composite cross arm is mostly a hollow thin-wall pipe formed by adopting a traditional pultrusion process, the U-shaped hoop is required to be matched for use, when the composite cross arm is installed, the U-shaped hoop is sleeved on a tower, two ends of the U-shaped hoop penetrate through a pair of through holes formed in the cross arm and are connected with a nut, two side faces of the cross arm are respectively abutted against the nut and the tower, the cross arm is stably fixed, however, the composite cross arm, the U-shaped hoop and the nut are in a split type design, the composite cross arm is not easy to carry in the process of climbing the tower by an installer, the composite cross arm is easy to accidentally fall, ground personnel are injured, and extra tools are required to be carried at the top of the tower simultaneously, the operation difficulty is large, the tools are easy to fall off hands and fall, the ground personnel are injured by smashing, the safety performance.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

Aiming at the problems that the prior composite material cross arm in the prior art is mostly a hollow thin-wall pipe formed by adopting the traditional pultrusion process and needs to be matched with a U-shaped hoop for use, when the device is installed, the U-shaped hoop is sleeved on a pole tower, two ends of the U-shaped hoop penetrate through the through holes on the cross arm and are connected with the nuts, so that two side surfaces of the cross arm are respectively abutted against the nuts and the pole tower, thereby stably fixing the cross arm, but the composite cross arm, the U-shaped hoop and the nut are designed in a split type, are not easy to carry and fall accidentally when an installer climbs the tower, cause the injury to ground personnel, need carry extra instrument simultaneously and operate at the shaft tower top, the operation degree of difficulty is big, and the instrument breaks off the hand easily and falls, injures ground personnel by a crashing object, the problem that the security performance is low, the utility model aims to provide a power transmission and distribution combined material cross arm frock gold utensil, the problem that provides in the solution background art that it can be fine.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides a power transmission and distribution combined material cross arm frock gold utensil, includes strutting arrangement, strutting arrangement's top is equipped with the staple bolt strip, is equipped with the shaft tower between strutting arrangement and the staple bolt strip, and strutting arrangement's right-hand member is equipped with the insulator fixing base, and strutting arrangement's left end is equipped with the insulator mount pad.

Preferably, the supporting device comprises a cross arm, a through hole, a displacement hole and a sliding groove hole are formed in the top surface of the cross arm, the cross arm is communicated with the through hole, a control device is arranged at the left end of an inner cavity of the cross arm and connected with the insulator mounting seat, a rotating device is arranged in the middle of the inner cavity of the cross arm and connected with the end portion of the hoop strip, a limiting device is arranged at the right end of the inner cavity of the cross arm and connected with the insulator fixing seat.

Preferably, the control device comprises a limiting bolt, a clamping tooth and a rotating rod, the limiting bolt is inserted into the insulator mounting seat in a penetrating manner, and the limiting bolt is in threaded sleeve connection with the insulator mounting seat; the clamping teeth are connected to the inner wall of the cross arm; rotary rod activity alternates on the left surface of cross arm, the outside activity of rotary rod has cup jointed the inside location spring that is located the cross arm, location spring's left end and the interior wall connection of cross arm, the external fixation of rotary rod has cup jointed the location gear, the left surface of location gear is connected with location spring's right-hand member, location gear can mesh with the joint tooth, the external fixation of rotary rod has cup jointed the reinforcing plate that is located the location gear right side, the inner wall sliding connection of reinforcing plate and cross arm, the right flank of reinforcing plate is connected with the push pedal through thrust spring transmission, thrust spring and push pedal all cup joint with the rotary rod activity, the right-hand member of rotary rod is equipped with the toper pointed end, the most advanced surface of toper is equipped with spacing.

Preferably, the rotating device comprises two fixing plates, the fixing plates are connected with the inner wall of the cross arm, a reverse transmission screw rod is inserted into one fixing plate, a forward transmission screw rod is inserted into the other fixing plate, the reverse transmission screw rod and the forward transmission screw rod are uniformly sleeved with the fixing plates through threads, a tapered hole is formed in the left end surface of the reverse transmission screw rod and can be inserted into the tapered tip, a limiting groove is formed in the inner wall of the tapered hole and can be inserted into the limiting strip, an inserting device is sleeved on the external threads of the reverse transmission screw rod and is in sliding connection with the inner wall of the cross arm, the left end of the hoop strip penetrates through the displacement hole and is connected with the top surface of the inserting device, a locking block is sleeved on the external threads of the forward transmission screw rod, the right end of the hoop strip penetrates through the sliding groove hole and is connected with the top surface of the locking block, and a locking gear positioned between the two fixing plates is connected between the reverse transmission screw, the bottom surface of cross arm inner chamber is connected with the shell fragment that is located locking gear below, and the other end and the locking gear meshing of shell fragment, the end connection of shell fragment has the stay cord, and the other end of stay cord extends to the outside of cross arm and is connected with the pull ring.

Preferably, the plug device includes the grafting piece, and the guiding hole has all been seted up to the left and right sides face of grafting piece, and the guiding hole cup joints with reverse drive screw activity, and the internal thread hole has been seted up to the inside of grafting piece, and the internal thread hole communicates with the guiding hole, and the internal thread hole cup joints with reverse drive screw thread.

Preferably, the limiting device comprises a fixed gear disc and a limiting rod, the fixed gear disc is fixedly connected with the inner wall of the cross arm, and the left side surface of the fixed gear disc is movably sleeved with the right end of the forward transmission screw; the limiting rod is movably inserted on the right side face of the cross arm, the right end of the limiting rod is fixedly connected with the insulator fixing seat, the left end of the limiting rod is connected with a limiting fluted disc, the limiting fluted disc is connected with the inner wall of the cross arm in a sliding mode, the limiting fluted disc can be meshed with the fixed fluted disc, the limiting fluted disc is connected with the right side face of the inner cavity of the cross arm in a transmission mode through a reset spring, and the reset spring is movably sleeved with the limiting rod.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

the hoop strip and the supporting device are fixed together through the rotating device, so that the power transmission and distribution composite material cross arm tooling fitting is formed into a whole, an installer can conveniently carry the power transmission and distribution composite material cross arm tooling fitting in the process of climbing a tower, the power transmission and distribution composite material cross arm tooling fitting can be fixed on a waistband of the installer through the matching of the rotating device and the hoop strip, no falling accidents occur, the safety performance is high, the installer can conveniently install the power transmission and distribution composite material cross arm tooling fitting through the matching of the insulator mounting seat, the control device, the rotating device and the hoop strip, no extra tool is required to be carried, the operation difficulty is small, the safety performance is further improved, the installer can conveniently adjust the inclination angle of the insulator mounting seat through the control device, and the installer can conveniently adjust the inclination angle of the insulator fixing seat through the limiting device, make the installer can install the insulator on insulator fixing base and insulator mount pad fast and adjust the inclination of insulator, the installation rate is fast, further reduces the operation degree of difficulty, has improved the practicality of this power transmission and distribution combined material cross arm frock gold utensil.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the internal structure of FIG. 1 according to the present invention;

fig. 3 is a schematic bottom view of the internal structure of fig. 1 according to the present invention;

FIG. 4 is a schematic view of the internal structure of the reverse drive screw of FIG. 2 according to the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic view of the internal structure of the plugging device of FIG. 2 according to the present invention;

fig. 7 is a left side view of the locking gear of fig. 2 according to the present invention.

The reference numbers in the figures illustrate:

1. a support device; 11. a cross arm; 12. inserting holes; 13. a displacement hole; 14. a sliding slot hole; 2. a hoop strip; 3. a pole tower; 4. an insulator fixing seat; 5. an insulator mounting seat; 6. a control device; 60. a limiting strip; 61. a limit bolt; 62. clamping teeth; 63. rotating the rod; 64. a positioning spring; 65. positioning a gear; 66. a reinforcing plate; 67. a thrust spring; 68. pushing the plate; 69. a tapered tip; 7. a rotating device; 70. a limiting groove; 71. a fixing plate; 72. a reverse drive screw; 73. a forward drive screw; 74. a plug-in device; 741. an insertion block; 742. a guide hole; 743. an internally threaded bore; 75. a locking block; 76. a locking gear; 77. a spring plate; 78. pulling a rope; 79. a tapered hole; 8. a limiting device; 81. fixing a gear disc; 82. a limit fluted disc; 83. a limiting rod; 84. a return spring.

Detailed Description

The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the present invention; rather than all embodiments. Based on the embodiment of the utility model; all other embodiments obtained by a person skilled in the art without making any inventive step; all belong to the protection scope of the utility model.

Referring to fig. 1-7, a power transmission and distribution composite material cross arm tooling fitting comprises a supporting device 1, a hoop strip 2 is arranged at the top of the supporting device 1, a pole tower 3 is arranged between the supporting device 1 and the hoop strip 2, an insulator fixing seat 4 is arranged at the right end of the supporting device 1, and an insulator mounting seat 5 is arranged at the left end of the supporting device 1.

The supporting device 1 comprises a cross arm 11, a through hole 12, a displacement hole 13 and a sliding groove hole 14 are formed in the top surface of the cross arm 11, the cross arm 11 is communicated with the through hole 12, a control device 6 is arranged at the left end of an inner cavity of the cross arm 11, the control device 6 is connected with an insulator mounting seat 5, a rotating device 7 is arranged in the middle of the inner cavity of the cross arm 11, the rotating device 7 is connected with the end portion of a hoop strip 2, a limiting device 8 is arranged at the right end of the inner cavity of the cross arm 11, and the limiting device 8 is connected with an insulator fixing seat 4.

The control device 6 comprises a limiting bolt 61, a clamping tooth 62 and a rotating rod 63, the limiting bolt 61 is inserted into the insulator mounting seat 5, and the limiting bolt 61 is in threaded sleeve joint with the insulator mounting seat 5 and is used for locking the distance value between the insulator mounting seat 5 and the cross arm 11, so that a worker can conveniently operate the insulator mounting seat 5; the clamping teeth 62 are connected to the inner wall of the cross arm 11; the rotary rod 63 is movably inserted on the left side surface of the cross arm 11, a positioning spring 64 located inside the cross arm 11 is sleeved on the outer portion of the rotary rod 63 in a movable mode, the left end of the positioning spring 64 is connected with the inner wall of the cross arm 11, a positioning gear 65 is sleeved on the outer portion of the rotary rod 63 in a fixed mode, the left side surface of the positioning gear 65 is connected with the right end of the positioning spring 64, the positioning gear 65 can be meshed with the clamping teeth 62, a reinforcing plate 66 located on the right side of the positioning gear 65 is sleeved on the outer portion of the rotary rod 63 in a fixed mode, the reinforcing plate 66 is connected with the inner wall of the cross arm 11 in a sliding mode, a push plate 68 is connected to the right side surface of the reinforcing plate 66 through a thrust spring 67 in a transmission mode, the thrust spring 67 and the push plate 68 are both.

The rotating device 7 comprises a fixed plate 71, the fixed plate 71 is connected with the inner wall of the cross arm 11, the number of the fixed plates 71 is two, a reverse drive screw 72 is inserted in one fixed plate 71, a forward drive screw 73 is inserted in the other fixed plate 71, the reverse drive screw 72 and the forward drive screw 73 are uniformly sleeved on the fixed plate 71 through threads, a tapered hole 79 is formed in the left end face of the reverse drive screw 72, the tapered hole 79 can be inserted with the tapered tip 69, a limiting groove 70 is formed in the inner wall of the tapered hole 79, the limiting groove 70 can be inserted with the limiting strip 60, an inserting device 74 is sleeved on the outer threads of the reverse drive screw 72, the inserting device 74 is connected with the inner wall of the cross arm 11 in a sliding manner, the left end of the anchor ear 2 penetrates through the displacement hole 13 and is connected with the top face of the inserting device 74, a locking block 75 is sleeved on the outer threads of the forward drive screw 73, the right end of the anchor ear 2 penetrates through the sliding, a locking gear 76 positioned between the two fixing plates 71 is connected between the reverse transmission screw 72 and the forward transmission screw 73, the bottom surface of the inner cavity of the cross arm 11 is connected with a spring plate 77 positioned below the locking gear 76, the other end of the spring plate 77 is meshed with the locking gear 76, the end part of the spring plate 77 is connected with a pull rope 78, and the other end of the pull rope 78 extends to the outside of the cross arm 11 and is connected with a pull ring.

The plug device 74 includes a plug block 741, the left and right sides of the plug block 741 are both provided with a guide hole 742, the guide hole 742 is movably sleeved with the reverse drive screw 72, an internal threaded hole 743 is provided inside the plug block 741, the internal threaded hole 743 is communicated with the guide hole 742, and the internal threaded hole 743 is in threaded sleeve with the reverse drive screw 72.

The limiting device 8 comprises a fixed gear disc 81 and a limiting rod 83, the fixed gear disc 81 is fixedly connected with the inner wall of the cross arm 11, and the left side surface of the fixed gear disc 81 is movably sleeved with the right end of the forward transmission screw 73; the limiting rod 83 is movably inserted on the right side face of the cross arm 11, the right end of the limiting rod 83 is fixedly connected with the insulator fixing seat 4, the left end of the limiting rod 83 is connected with a limiting fluted disc 82, the limiting fluted disc 82 is connected with the inner wall of the cross arm 11 in a sliding mode, the limiting fluted disc 82 can be meshed with the fixed fluted disc 81, the limiting fluted disc 82 is connected with the right side face of the inner cavity of the cross arm 11 through a reset spring 84 in a transmission mode, and the reset spring 84 is movably sleeved with the limiting rod 83.

The working principle is as follows:

firstly, the plug-in device 74 passes through a belt of an installer and is pulled, the hoop strip 2 passes through the belt, then the insulator mounting seat 5 is pulled, the insulator mounting seat 5 drives the rotating rod 63 to move leftwards, the rotating rod 63 is gradually separated from the reverse transmission screw 72, then the rotating rod 63 moves leftwards to a maximum distance value, the distance value between the rotating rod 63 and the reverse transmission screw 72 is larger than the length value of the plug-in device 74, then the plug-in device 74 passes through the through hole 12, the bottom surface of the plug-in device 74 is contacted with the bottom surface of the inner cavity of the cross arm 11, at the moment, the plug-in device 74 is positioned between the rotating rod 63 and the reverse transmission screw 72, the right end of the conical tip 69 is opposite to the guide hole 742 on the left side surface of the plug-in block 741, the left end of the reverse transmission screw 72 is opposite to the guide hole 742 on the right side surface of the plug-, inserting the right end of the cone-shaped tip 69 into the corresponding guide hole 742, then inserting the insertion device 74 into the right direction by the rotating rod 63 through the reinforcing plate 66, the thrust spring 67 and the push plate 68, inserting the left end of the reverse drive screw 72 into the corresponding guide hole 742, fixing the insertion device 74, fixing the power transmission and distribution composite cross arm tooling fitting on the belt of an installer, avoiding falling accidents, having high safety performance, pulling the insulator mounting seat 5 after the installer climbs the top of the tower with the power transmission and distribution composite cross arm tooling fitting, separating the rotating rod 63 from the reverse drive screw 72, pulling out the insertion device 74, detaching the power transmission and distribution composite cross arm tooling fitting from the belt of the installer, then winding the hoop bar 2 outside the supporting device 1, then inserting the insertion device 74 between the rotating rod 63 and the reverse drive screw 72 in the state of pulling the insulator mounting seat 5, then the insulator mounting seat 5 is loosened, the inserting device 74 is fixed, at the moment, the positioning gear 65 is meshed with the clamping tooth 62 to limit the rotating rod 63, the rotating rod 63 only slides left and right and cannot rotate, then the insulator mounting seat 5 is pressed, the insulator mounting seat 5 drives the rotating rod 63 to move right, so that the conical tip 69 and the limiting strip 60 pass through the internal threaded hole 743 and are respectively inserted with the conical hole 79 and the limiting groove 70, meanwhile, the push plate 68 provides a rightward thrust force for the inserting device 74 under the action of the elastic force of the thrust spring 67, so that the left end of the reverse transmission screw 72 is inserted with the right end of the internal threaded hole 743, at the moment, the positioning gear 65 is separated from the clamping tooth 62, then the rotating rod 63 is rotated through the insulator mounting seat 5, the rotating rod 63 drives the reverse transmission screw 72 to rotate through the matching of the conical tip 69, the limiting strip 60, the conical hole 79 and the limiting groove 70, and the reverse transmission screw, then the inserting device 74 and the locking block 75 approach each other under the effect of thread fit, so that the hoop strip 2 is gradually bent, the joint surface of the hoop strip 2 and the tower 3 is gradually increased until the hoop strip 2 is locked outside the tower 3, then the elastic sheet 77 is meshed with the locking gear 76 under the action of self elasticity to limit the reverse transmission screw 72 and the forward transmission screw 73, the positions of the inserting device 74 and the locking block 75 are fixed, so that the cross arm 11 is stably fixed on the tower 3, then the insulator mounting seat 5 is loosened and the insulator mounting seat 5 is pulled, so that the tapered tip 69 is separated from the tapered hole 79, the limiting strip 60 is separated from the limiting groove 70, the positioning gear 65 is separated from the clamping tooth 62, then the insulator mounting seat 5 is rotated, the inclination angle of the insulator mounting seat 5 is adjusted, and the inclination angle of the insulator mounting seat 5 is kept unchanged after the adjustment is finished, the insulator fixing seat is enabled to move rightwards under the action of elasticity of a positioning spring 64, then a positioning gear 65 is meshed with a clamping tooth 62 to limit a rotating rod 63, and further the inclined angle of the insulator mounting seat 5 is fixed, then an insulator fixing seat 4 is pulled and the inclined angle of the insulator fixing seat 4 is adjusted, after the adjustment is completed, the inclined angle of the insulator fixing seat 4 is kept unchanged, so that the insulator fixing seat moves leftwards under the action of elasticity of a reset spring 84, then a limiting fluted disc 82 is meshed with a fixing fluted disc 81 to limit a limiting rod 83, further the inclined angle of the insulator fixing seat 4 is fixed, and finally the insulator is installed on the insulator fixing seat 4 and the insulator mounting seat 5.

The above; is only a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; according to the technical scheme of the utility model and the improvement conception, equivalent substitution or change is carried out; are all covered by the protection scope of the utility model.

Claims

1. The utility model provides a power transmission and distribution combined material cross arm frock gold utensil, includes strutting arrangement (1), its characterized in that: the top of strutting arrangement (1) is equipped with staple bolt strip (2), is equipped with shaft tower (3) between strutting arrangement (1) and staple bolt strip (2), and the right-hand member of strutting arrangement (1) is equipped with insulator fixing base (4), and the left end of strutting arrangement (1) is equipped with insulator mount pad (5).

2. The power transmission and distribution composite material cross arm tooling fitting of claim 1, characterized in that: strutting arrangement (1) includes cross arm (11), interlude hole (12), displacement hole (13) and sliding groove hole (14) have been seted up to the top surface of cross arm (11), cross arm (11) and interlude hole (12) intercommunication, the left end of cross arm (11) inner chamber is equipped with controlling means (6), controlling means (6) are connected with insulator mount pad (5), the middle part of cross arm (11) inner chamber is equipped with rotating device (7), rotating device (7) and the end connection of staple bolt strip (2), the right-hand member of cross arm (11) inner chamber is equipped with stop device (8), stop device (8) are connected with insulator fixing base (4).

3. The power transmission and distribution composite material cross arm tooling fitting of claim 2, characterized in that: the control device (6) comprises a limiting bolt (61), a clamping tooth (62) and a rotating rod (63), the limiting bolt (61) is inserted into the insulator mounting seat (5), and the limiting bolt (61) is in threaded sleeve joint with the insulator mounting seat (5); the clamping teeth (62) are connected to the inner wall of the cross arm (11); the rotary rod (63) is movably inserted on the left side surface of the cross arm (11), a positioning spring (64) positioned in the cross arm (11) is movably sleeved outside the rotary rod (63), the left end of the positioning spring (64) is connected with the inner wall of the cross arm (11), a positioning gear (65) is fixedly sleeved outside the rotary rod (63), the left side surface of the positioning gear (65) is connected with the right end of the positioning spring (64), the positioning gear (65) can be meshed with the clamping tooth (62), a reinforcing plate (66) positioned on the right side of the positioning gear (65) is fixedly sleeved outside the rotary rod (63), the reinforcing plate (66) is connected with the inner wall of the cross arm (11) in a sliding manner, the right side surface of the reinforcing plate (66) is connected with a push plate (68) in a transmission manner through a thrust spring (67), both the thrust spring (67) and the push plate (68) are movably sleeved with the rotary rod (63), and the right end of the rotary rod (63) is, the surface of the conical tip (69) is provided with a limit strip (60).

4. The power transmission and distribution composite material cross arm tooling fitting of claim 2, characterized in that: the rotating device (7) comprises two fixing plates (71), the fixing plates (71) are connected with the inner wall of the cross arm (11), the number of the fixing plates (71) is two, a reverse transmission screw (72) is inserted into one fixing plate (71), a forward transmission screw (73) is inserted into the other fixing plate (71), the reverse transmission screw (72) and the forward transmission screw (73) are uniformly sleeved on the fixing plates (71) in a threaded manner, a tapered hole (79) is formed in the left end face of the reverse transmission screw (72), the tapered hole (79) can be inserted into the tapered tip (69), a limiting groove (70) is formed in the inner wall of the tapered hole (79), the limiting groove (70) can be inserted into the limiting strip (60), an inserting device (74) is sleeved on the outer thread of the reverse transmission screw (72), the inserting device (74) is connected with the inner wall of the cross arm (11) in a sliding manner, the left end of the anchor ear strip (2) penetrates through the displacement hole (13) and is connected with the top face of the inserting device (, the outside screw thread of forward drive screw (73) has cup jointed latch segment (75), the right-hand member of staple bolt strip (2) passes slotted hole (14) and is connected with the top surface of latch segment (75), be connected with between reverse drive screw (72) and forward drive screw (73) and be located two locking gear (76) between fixed plate (71), the bottom surface of cross arm (11) inner chamber is connected with shell fragment (77) that are located locking gear (76) below, the other end and the meshing of locking gear (76) of shell fragment (77), the end connection of shell fragment (77) has stay cord (78), the other end of stay cord (78) extends to the outside of cross arm (11) and is connected with the pull ring.

5. The power transmission and distribution composite material cross arm tooling fitting of claim 4, wherein: the plug-in device (74) comprises a plug-in block (741), guide holes (742) are formed in the left side face and the right side face of the plug-in block (741), the guide holes (742) are movably sleeved with the reverse transmission screw (72), an internal thread hole (743) is formed in the plug-in block (741), the internal thread hole (743) is communicated with the guide holes (742), and the internal thread hole (743) is in threaded sleeve connection with the reverse transmission screw (72).

6. The power transmission and distribution composite material cross arm tooling fitting of claim 2, characterized in that: the limiting device (8) comprises a fixed gear disc (81) and a limiting rod (83), the fixed gear disc (81) is fixedly connected with the inner wall of the cross arm (11), and the left side surface of the fixed gear disc (81) is movably sleeved with the right end of the forward transmission screw (73); spacing pole (83) activity interlude is on the right flank of cross arm (11), the right-hand member and insulator fixing base (4) fixed connection of spacing pole (83), the left end of spacing pole (83) is connected with spacing fluted disc (82), the inner wall sliding connection of spacing fluted disc (82) and cross arm (11), spacing fluted disc (82) can mesh with fixed fluted disc (81), spacing fluted disc (82) are connected with the right flank transmission of cross arm (11) inner chamber through reset spring (84), reset spring (84) and spacing pole (83) activity cup joint.