Overhead open wire half-cutting device

Abstract

An overhead open wire half-cutting device belongs to the field of power line construction equipment. Comprising a semi-cutting hydraulic mechanism, a semi-cutting knife rest and a semi-cutting knife, the semi-cutting hydraulic mechanism comprises an upper semi-cutting hydraulic oil cylinder body, a lower semi-cutting hydraulic oil cylinder body and a cylinder column reset action spring, and the lower side portion of the lower semi-cutting hydraulic oil cylinder body is provided with a semi-cutting hydraulic oil cylinder oil inlet and return pipe connector; the end, facing the half-cut hydraulic oil cylinder lower cylinder body, of the half-cut hydraulic oil cylinder oil inlet and return pipe connector is communicated with the half-cut hydraulic oil cylinder oil inlet and return hole, the inner wall of the lower end of the half-cut hydraulic oil cylinder upper cylinder body is fixed to the outer wall of the upper end of the half-cut hydraulic oil cylinder lower cylinder body, and the half-cut hydraulic oil cylinder column is sleeved with the cylinder column reset action spring. An oil inlet and return hole of the semi-cutting hydraulic oil cylinder is communicated with a cylinder body cavity, the semi-cutting tool rest and the semi-cutting tool are arranged on the top of an upper cylinder body of the semi-cutting hydraulic oil cylinder, and the upper end of a cylinder column of the semi-cutting hydraulic oil cylinder is fixed to the lower portion of the semi-cutting tool. The method is convenient to manufacture and use; the tensile strength of the maintained and repaired overhead open wire is ensured; and the maintenance efficiency and quality of the line are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of power line construction equipment, and in particular relates to an overhead open wire half-cutting device. Background Art

[0002] Overhead lines are a form of power lines, which are installed above the ground and fixed to towers erected on the ground by insulators to transmit electric energy. Although overhead lines are easily affected by factors such as strong winds, ice and snow, hail, freezing, and dirt, they have the unique advantages of low cost and easy maintenance, so they have always occupied an absolute dominant position in overhead transmission lines.

[0003] As is known in the industry, when the aluminum stranded wire at one or more parts of the above-mentioned overhead open wire is damaged (damaged), partially broken, and / or loose and bulged, it is necessary to maintain it in time to ensure the smooth transmission of power and ensure safety. In this case, it is necessary to first remove the aluminum stranded wire at the damaged part, and then replace the damaged aluminum stranded wire at the removed part with an aluminum sleeve with good current conductivity, and press the two ends of the aluminum sleeve with the aluminum stranded wire that is still in good condition. As is still known in the industry, the above-mentioned aluminum sleeve is relatively fragile to the pulling force (tension) in the line, and is much inferior to the overall pulling force of the inherent aluminum stranded wire. Therefore, before the aluminum sleeve is set, it is necessary to press the steel sleeve with excellent strength to the exposed part of the steel core wire. The exposed part of the steel core wire referred to here refers to the part corresponding to the removal of the damaged aluminum stranded wire. The steel casing (commonly known as "steel sleeve" in the industry) plays an excellent role in reinforcing the steel core wire in this area, that is, the steel casing is pressed and fixed on the steel core wire, and the aforementioned aluminum casing is actually located outside the steel casing and is also pressed and fixed together with the steel casing. This can prevent the aforementioned aluminum casing that replaces the aluminum stranded wire from being subjected to a tensile force that it cannot withstand, thereby affecting the repair effect of the overhead wire. For example, it can prevent the pressed end of the aluminum casing from escaping from the aluminum stranded wire.

[0004] From the above description, it can be known that only by cutting off the damaged aluminum strands in advance and then crimping the steel core wire with the steel sleeve, can the aluminum sleeve replace the damaged and removed aluminum strands. The existing technology usually uses hydraulic shears or similar tools to cut off the damaged aluminum strands. One of the shortcomings of this operation method is that due to the lack of reasonable control measures, it is easy to damage the steel core wire accidentally during the process of shearing and removing the damaged aluminum strands. Therefore, the construction personnel must be very careful and their spirits are always in a highly tense state during the construction process. However, even so, there is still a high and unavoidable probability of damaging the steel core wire to varying degrees; the second shortcoming is that the efficiency of cutting off the damaged aluminum strands is low, which affects the speed of line repair construction; the third shortcoming is that the flatness or roundness of the cut at the cut part is difficult to guarantee; the fourth shortcoming is that the construction work intensity of the construction personnel is relatively large. Utility Model Content

[0005] The task of the utility model is to provide an overhead open wire half-cutting device which helps to avoid damaging the steel core wire in the process of cutting off the damaged aluminum stranded wire, is beneficial to significantly improve the efficiency of cutting off the damaged aluminum stranded wire and ensures the regularity of the cut, and is convenient for reducing the working intensity of construction personnel.

[0006] The task of the utility model is accomplished in this way. An overhead open wire half-cutting device includes a half-cutting hydraulic mechanism, a half-cutting knife holder and a half-cutting knife. The half-cutting hydraulic mechanism includes a half-cutting hydraulic oil cylinder lower cylinder body, a half-cutting hydraulic oil cylinder upper cylinder body and a cylinder column reset action spring. A half-cutting hydraulic oil cylinder inlet and return oil pipe interface is provided on the lower side of the half-cutting hydraulic oil cylinder lower cylinder body. When in use, the half-cutting hydraulic oil cylinder inlet and return oil pipe interface extends to one end outside the half-cutting hydraulic oil cylinder lower cylinder body and is connected to a wire hydraulic crimping machine through a half-cutting hydraulic oil cylinder inlet and return oil pipeline. One end of the half-cutting hydraulic oil cylinder inlet and return oil pipe interface facing the half-cutting hydraulic oil cylinder lower cylinder body is communicated with the half-cutting hydraulic oil cylinder inlet and return oil hole opened in the half-cutting hydraulic oil cylinder lower cylinder body. The lower end inner wall of the half-cutting hydraulic oil cylinder upper cylinder body is connected to the half-cutting hydraulic oil cylinder lower cylinder body. The upper outer wall of the half-cut hydraulic oil cylinder is threaded and fixed, and a cylinder column reset spring is sleeved on the half-cut hydraulic oil cylinder column arranged in the cylinder body cavity jointly formed by the upper and lower cylinder bodies of the half-cut hydraulic oil cylinder. The lower end of the cylinder column reset spring is supported on the half-cut hydraulic oil cylinder column piston arranged at the lower end of the half-cut hydraulic oil cylinder column, and the upper end of the cylinder column reset spring is supported on the top wall of the upper cylinder body of the half-cut hydraulic oil cylinder facing the cylinder body cavity. The oil inlet and return hole of the half-cut hydraulic oil cylinder is communicated with the cylinder body cavity located in the lower area of ​​the half-cut hydraulic oil cylinder column piston. The half-cut knife holder and the half-cut knife are arranged on the top of the upper cylinder body of the half-cut hydraulic oil cylinder, and the upper end of the half-cut hydraulic oil cylinder column is fixed to the lower part of the half-cut knife via the cylinder column yield hole opened in the central position of the upper cylinder body of the half-cut hydraulic oil cylinder.

[0007] In the utility model, a lower cylinder body stabilizing support seat is fixed at the bottom of the lower cylinder body of the half-cut hydraulic oil cylinder, which is used to stably support the lower cylinder body of the half-cut hydraulic oil cylinder longitudinally on the ground when in use; a lower cylinder body outer thread is formed on the upper end outer wall of the lower cylinder body of the half-cut hydraulic oil cylinder, and an upper cylinder body inner thread is formed on the lower end inner wall of the upper cylinder body of the half-cut hydraulic oil cylinder, and the upper cylinder body inner thread is threadedly fixed to the lower cylinder body outer thread.

[0008] In the utility model, a left connecting ear of the upper cylinder body and a right connecting ear of the upper cylinder body extend upward from the top of the upper cylinder body of the half-cut hydraulic oil cylinder. The left connecting ear of the upper cylinder body and the right connecting ear of the upper cylinder body are respectively spaced 180° apart in the circumferential direction around the top of the upper cylinder body of the half-cut hydraulic oil cylinder and are in a face-to-face corresponding state. The cylinder column clearance hole corresponds to between the left and right connecting ears of the upper cylinder body; the half-cutting knife holder together with the half-cutting knife is connected to the left connecting ear of the upper cylinder body and the right connecting ear of the upper cylinder body at the top of the upper cylinder body of the half-cut hydraulic oil cylinder.

[0009] In the utility model, a half-cutting knife matching fixing groove is formed on the top of the half-cutting hydraulic cylinder column; an upper cylinder body left connecting ear pin hole is opened on the upper cylinder body left connecting ear, and an upper cylinder body right connecting ear pin hole is opened on the upper cylinder body right connecting ear.

[0010] In the utility model, the half-cutting tool holder comprises a front left clamping block, a front right clamping block, a rear left clamping block and a rear right clamping block, the front left clamping block is located at the front side of the left connecting ear of the upper cylinder body, and the front left clamping block bolt holes are spaced apart in the height direction of the front left clamping block, the front right clamping block is located at the front side of the right connecting ear of the upper cylinder body, and the front right clamping block bolt holes are spaced apart in the height direction of the front right clamping block, the rear left clamping block is located at the rear side of the left connecting ear of the upper cylinder body, and the rear left clamping block bolt holes are spaced apart in the height direction of the rear left clamping block, and the rear right clamping block is located at the front side of the left connecting ear of the upper cylinder body The half-cutter comprises a half-cutter static knife and a half-cutter movable knife, the half-cutter static knife is located above the half-cutter movable knife, and half-cutter static knife left fixing bolt passing holes are spaced apart in the height direction of the left side of the half-cutter static knife, and half-cutter static knife right fixing bolt passing holes are spaced apart in the height direction of the right side of the half-cutter static knife, and a left pad is provided between the left rear of the half-cutter static knife and the rear left clamp, and a right pad is provided between the right rear of the half-cutter static knife and the rear right clamp A pad block is provided with a left pad block hole at a position corresponding to the bolt hole of the rear left clamp block, and a right pad block hole is provided at a position corresponding to the bolt hole of the rear right clamp block on the left pad block. A group of left fixing bolts of the half-cut static knife sequentially pass through the front left clamp block bolt hole, the left fixing bolt passing hole of the half-cut static knife, the left pad block hole and the rear left clamp block bolt hole and are locked by a left locking nut screwed on the end of the left fixing bolt of the half-cut static knife. A group of right fixing bolts of the half-cut static knife sequentially pass through the front right clamp block bolt hole, the right fixing bolt passing hole of the half-cut static knife, the right pad block The hole and the bolt hole of the rear right clamp block are locked by the right locking nut screwed on the end of the right fixing bolt of the half-cutting static knife, the lower middle part of the half-cutting movable knife is fixed with the half-cutting movable knife at the top of the half-cutting hydraulic cylinder column by the fixing groove, the lower part of the front left clamp block and the lower part of the rear left clamp block are connected to the left connecting ear of the upper cylinder body through the left pin shaft at the position corresponding to the pin hole of the left connecting ear of the upper cylinder body, and the lower part of the front right clamp block and the lower part of the rear right clamp block are connected to the right connecting ear of the upper cylinder body through the right pin shaft at the position corresponding to the pin hole of the right connecting ear of the upper cylinder body.

[0011] In the utility model, the half-cutting static knife has a half-cutting static knife blade, and the half-cutting static knife blade faces downward, and the half-cutting movable knife has a half-cutting movable knife blade, and the half-cutting movable knife blade faces upward.

[0012] In the utility model, a semicircular concave cavity of the static knife blade is formed in the middle of the length direction of the half-cut static knife blade, and a semicircular concave cavity of the dynamic knife blade is formed in the middle of the length direction of the half-cut dynamic knife and at a position corresponding to the semicircular concave cavity of the static knife blade. The diameter of the full circular cavity formed by the semicircular concave cavity of the static knife blade and the semicircular concave cavity of the dynamic knife blade is adapted to the outer diameter of the steel strand.

[0013] In the utility model, a moving knife locking screw which is communicated with the half-cutting moving knife matching fixing groove and is used to lock the half-cutting moving knife at the position of the half-cutting moving knife matching fixing groove is provided on the upper end side of the half-cutting hydraulic cylinder column and at a position corresponding to the half-cutting moving knife matching fixing groove.

[0014] In the utility model, a moving knife flange is formed on the left and right sides of the half-cutting moving knife at positions corresponding to each other, and a moving knife flange limiting shoulder is formed on the half-cutting static knife at a position corresponding to the moving knife flange. When the half-cutting moving knife moves upward to the extent that the upper surface of the moving knife flange contacts the moving knife flange limiting shoulder, the half-cutting moving knife stops moving upward.

[0015] In the utility model, the inclination direction of the half-cutting static knife blade is opposite to the inclination direction of the half-cutting movable knife blade; the half-cutting static knife blade is inclined from top to rearward and downward, and the half-cutting movable knife blade is inclined from front to rearward and upward.

[0016] The technical solution provided by the utility model has the advantages of being easy to manufacture and use because the overall structure of the overhead open wire half-cutting device composed of a half-cutting hydraulic mechanism, a half-cutting knife frame and a half-cutting knife is very simple, small in size and light in weight; because the half-cutting knife only cuts and removes the damaged external aluminum stranded wire without damaging the internal steel core wire, the tensile strength of the overhead open wire after maintenance and repair can be guaranteed; because under the action of the half-cutting hydraulic mechanism, the half-cutting knife can efficiently cut and remove the damaged aluminum stranded wire and ensure the regularity of the cut edge, the maintenance efficiency and maintenance quality of the line can be guaranteed; because the cutting process is completed mechanically and automatically, the construction personnel only provide auxiliary care assistance without the need to participate in physical form, thereby reducing the work intensity of the construction personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of an embodiment of the utility model;

[0018] Figure 2 for Figure 1 The assembly structure diagram of the half-cutting knife holder and the half-cutting knife shown;

[0019] Figure 3 for Figure 2 The schematic diagram of the half-cutting knife holder and the half-cutting knife after being assembled is shown;

[0020] Figure 4 It is a schematic diagram of an application example of the utility model;

[0021] Figure 5 for Figure 4 A schematic diagram of a wire hydraulic crimping machine as viewed from the right side is shown. DETAILED DESCRIPTION

[0022] The specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings, but the description of the embodiments is not a limitation of the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as the protection scope of the present invention.

[0023] In the following description, all possible concepts of up, down, left, right, front and back directions or orientations are based on Figure 1 The position state is taken as an example, and therefore it cannot be understood as a special limitation on the technical solution provided by the utility model.

[0024] See also Figures 1 to 3 And combined with Figure 4 and Figure 5 , showing a half-cutting hydraulic mechanism 1, a half-cutting knife holder 2 and a half-cutting knife 3, the half-cutting hydraulic mechanism 1 comprises a half-cutting hydraulic cylinder lower cylinder body 11, a half-cutting hydraulic cylinder upper cylinder body 12 and a cylinder column reset action spring 13, a half-cutting hydraulic cylinder inlet and return pipe interface 111 is provided on the lower side of the half-cutting hydraulic cylinder lower cylinder body 11, and in the use state, the half-cutting hydraulic cylinder inlet and return pipe interface 111 extends to one end outside the half-cutting hydraulic cylinder lower cylinder body 11 through the half-cutting hydraulic cylinder inlet and return pipe 1111 and is connected to the half-cutting hydraulic cylinder by the hydraulic cylinder. Figure 4 The wire hydraulic crimping machine 4 shown in the figure is connected, one end of the half-cut hydraulic cylinder inlet and return oil pipe interface 111 facing the lower cylinder body 11 of the half-cut hydraulic cylinder is communicated with the half-cut hydraulic cylinder inlet and return oil hole 112 opened in the lower cylinder body base of the half-cut hydraulic cylinder lower cylinder body 11, the lower end inner wall of the half-cut hydraulic cylinder upper cylinder body 12 is threadedly fixed with the upper end outer wall of the half-cut hydraulic cylinder lower cylinder body 11, and the cylinder column reset action spring 13 is sleeved on the half-cut hydraulic cylinder cylinder column 15 arranged in the cylinder body cavity 14 jointly formed by the half-cut hydraulic cylinder upper and lower cylinder bodies 12 and 11, and the lower end of the cylinder column reset action spring 13 is supported on the half-cut hydraulic cylinder cylinder column 15 arranged in the cylinder body cavity 14 jointly formed by the half-cut hydraulic cylinder upper and lower cylinder bodies 12 and 11. The lower end of the cylinder column 15 is on the half-cut hydraulic cylinder cylinder column piston 151, and the upper end of the cylinder column reset spring 13 is supported on the top wall of the half-cut hydraulic cylinder upper cylinder body 12 facing the cylinder body cavity 14. The aforementioned half-cut hydraulic cylinder return oil hole 112 is communicated with the aforementioned cylinder body cavity 14 located in the lower area of ​​the half-cut hydraulic cylinder cylinder column piston 151. The half-cut knife holder 2 together with the half-cut knife 3 are arranged on the top of the aforementioned half-cut hydraulic cylinder upper cylinder body 12. The upper end of the aforementioned half-cut hydraulic cylinder cylinder column 15 is fixed to the lower part of the aforementioned half-cut knife 3 via the cylinder column yielding hole 121 opened in the central position of the half-cut hydraulic cylinder upper cylinder body 12.

[0025] According to professional common sense, with respect to the aforementioned cylinder cavity 14, the area or space below the half-cut hydraulic cylinder cylinder piston 151 constitutes the piston lower cavity, and the area or space above the half-cut hydraulic cylinder cylinder piston 151 constitutes the piston upper cavity. Since the present application adopts a unique half-cut hydraulic cylinder oil inlet and return pipe interface 111 with a unique structural design, the aforementioned piston lower cavity is essentially the oil inlet and return cavity at the bottom of the cylinder cavity 14. Since there is no hydraulic oil in the piston upper cavity, the return of the piston is achieved by the restoring force of the cylinder column reset action spring 13. In the same example, the rise of the half-cut hydraulic cylinder cylinder piston 151 is achieved by the hydraulic oil pushing the half-cut hydraulic cylinder cylinder piston 151 to overcome the reaction force (reaction force) of the cylinder column reset action spring 13. Figure 1 The figure shows a sealing ring 1511 which is arranged on (i.e., sleeved on) the piston 151 of the half-cut hydraulic cylinder column. The sealing ring 1511 forms an up-and-down sliding sealing cooperation with the inner wall of the lower cylinder body 11 of the half-cut hydraulic cylinder. That is to say, the sealing ring 1511 forms an up-and-down sliding sealing cooperation with the cylinder body cavity wall of the cylinder body cavity 14 located below the piston 151 of the half-cut hydraulic cylinder column.

[0026] Depend on Figures 1 to 3 As shown, a lower cylinder body stabilizing support seat 113 is fixed at the bottom of the aforementioned half-cut hydraulic cylinder lower cylinder body 11, which is used to stably support the lower cylinder body 11 of the half-cut hydraulic cylinder longitudinally on the floor when in use; a lower cylinder body outer thread 114 is formed on the upper end outer wall of the aforementioned half-cut hydraulic cylinder lower cylinder body 11, and an upper cylinder body inner thread 122 is formed on the lower end inner wall of the aforementioned half-cut hydraulic cylinder upper cylinder body 12, and the upper cylinder body inner thread 122 is threadedly fixed to the lower cylinder body outer thread 114.

[0027] See also Figures 2 to 3 And combined with Figure 1 A left connecting ear 123 and a right connecting ear 124 of the upper cylinder body extend upward from the top of the upper cylinder body 12 of the aforementioned half-cut hydraulic cylinder. The left connecting ear 123 and the right connecting ear 124 of the upper cylinder body are 180° apart in the circumferential direction around the top of the upper cylinder body 12 of the half-cut hydraulic cylinder and are in a face-to-face corresponding state. The aforementioned cylinder column clearance hole 121 corresponds to between the left and right connecting ears 123 and 124 of the upper cylinder body; the aforementioned half-cut knife holder 2 together with the aforementioned half-cut knife 3 are connected to the aforementioned left connecting ear 123 and the upper cylinder body right connecting ear 124 at the top of the upper cylinder body 12 of the aforementioned half-cut hydraulic cylinder.

[0028] A half-cutting knife matching fixing groove 152 ( Figure 2 and Figure 3The upper cylinder body left connecting ear 123 is provided with an upper cylinder body left connecting ear pin hole 1231, and the upper cylinder body right connecting ear 124 is provided with an upper cylinder body right connecting ear pin hole 1241.

[0029] The aforementioned half-cutting tool holder 2 includes a front left clamp block 21, a front right clamp block 22, a rear left clamp block 23 and a rear right clamp block 24. The front left clamp block 21 is located at the front side of the left connecting ear 123 of the upper cylinder body, and a front left clamp block bolt hole 211 is spaced apart in the height direction of the front left clamp block 21. The front right clamp block 22 is located at the front side of the right connecting ear 124 of the upper cylinder body, and a front right clamp block bolt hole 221 is spaced apart in the height direction of the front right clamp block 22. The rear left clamp block 23 is located at the rear side of the left connecting ear 123 of the upper cylinder body, and a rear left clamp block bolt hole 231 is spaced apart in the height direction of the rear left clamp block 23. The rear right clamp block 24 is located at the rear side of the right connecting ear 124 of the upper cylinder body, and a rear right clamp block bolt hole 241 is spaced apart in the height direction of the rear right clamp block 24.

[0030] The aforementioned half-cutting knife 3 comprises a half-cutting static knife 31 and a half-cutting movable knife 32. The half-cutting static knife 31 is located above the half-cutting movable knife 32. A half-cutting static knife left fixing bolt through hole 311 is provided at intervals in the height direction of the left side of the half-cutting static knife 31, and a half-cutting static knife right fixing bolt through hole 312 is provided at intervals in the height direction of the right side of the half-cutting static knife 31. A left pad 313 is provided between the left rear of the half-cutting static knife 31 and the rear left clamping block 23, and a right pad 314 is provided between the right rear of the half-cutting static knife 31 and the rear right clamping block 24. A left pad hole 3131 is provided on the left pad 313 and at a position corresponding to the bolt hole 231 of the rear left clamping block. A right pad 314 is provided on the right pad 314. A right pad hole 3141 is provided on the upper side and at a position corresponding to the rear right clamping block bolt hole 241. A group of half-cutting static knife left fixing bolts 25 sequentially pass through the front left clamping block bolt hole 211, the half-cutting static knife left fixing bolt through hole 311, the left pad hole 3131 and the rear left clamping block bolt hole 231 and are locked by a left locking nut 251 screwed on the end of the half-cutting static knife left fixing bolt 25. A group of half-cutting static knife right fixing bolts 26 sequentially pass through the front right clamping block bolt hole 221, the half-cutting static knife right fixing bolt through hole 312, the right pad hole 3141 and the rear right clamping block bolt hole 241 and are locked by a right locking nut 261 screwed on the end of the half-cutting static knife right fixing bolt 26. The lower middle part of the half-cutting movable knife 32 is fixed to the half-cutting movable knife at the top of the aforementioned half-cutting hydraulic cylinder column 15 by the fixing groove 152. The lower part of the front left clamp block 21 and the lower part of the rear left clamp block 23 are connected to the left connecting ear 123 of the upper cylinder body through the left pin shaft 27 at the position corresponding to the left connecting ear pin hole 1231 of the upper cylinder body, and the lower part of the front right clamp block 22 and the lower part of the rear right clamp block 24 are connected to the right connecting ear 124 of the upper cylinder body through the right pin shaft 28 at the position corresponding to the right connecting ear pin hole 1241 of the upper cylinder body. Figures 1 to 3It can be seen from the diagram that the lowest front left clamp block bolt hole in a group of front left clamp block bolt holes 211 located on the aforementioned front left clamp block 21 corresponds to the front side of the left connecting ear pin hole 1231 of the upper cylinder body, and thus the lowest front left clamp block bolt hole substantially plays the role of the front left clamp block pin shaft passing hole (also called "pivot hole") for the left pin shaft 27 to pass through; the lowest rear left clamp block bolt hole in a group of rear left clamp block bolt holes 231 opened on the rear left clamp block 23 also corresponds to the rear side of the left connecting ear pin hole 1231 of the upper cylinder body, and thus the lower rear left clamp block bolt hole substantially plays the role of the rear left clamp block pin shaft passing hole (also called "pivot hole") for the left pin shaft 27 to pass through. By the same token, the lowest front right clamp block bolt hole in a group of front right clamp block bolt holes 221 on the front right clamp block 22 and the lowest rear right clamp block bolt hole in a group of rear right clamp block bolt holes 241 on the rear right clamp block 24 respectively correspond to the front and rear sides of the right connecting ear pin hole 1241 of the upper cylinder body, and thus essentially serve as through holes (also called "pivot holes") for the right pin shaft 28 to pass through.

[0031] Depend on Figures 1 to 3 As shown, the aforementioned half-cutting static knife 31 has a half-cutting static knife blade 315, and the half-cutting static knife blade 315 faces downward, and the aforementioned half-cutting movable knife 32 has a half-cutting movable knife blade 321, and the half-cutting movable knife blade 321 faces upward.

[0032] A semicircular concave cavity 3151 for a stationary knife blade is formed in the middle of the length direction of the aforementioned half-cutting stationary knife blade 315, and a semicircular concave cavity 3211 for a moving knife blade is formed in the middle of the length direction of the half-cutting moving knife 32 and at a position corresponding to the semicircular concave cavity 3151 for the stationary knife blade. The diameter of the full circular cavity formed by the cooperation between the semicircular concave cavity 3151 for the stationary knife blade and the semicircular concave cavity 3211 for the moving knife blade is adapted to the outer diameter of the steel strand.

[0033] Preferably, by Figure 2 and Figure 3 As shown, at the upper end side of the aforementioned half-cutting hydraulic cylinder column 15 and at a position corresponding to the half-cutting movable knife matching and fixing groove 152, there is a movable knife locking screw 153 which is connected to the half-cutting movable knife matching and fixing groove 152 and is used to lock the aforementioned half-cutting movable knife 32 at the position of the half-cutting movable knife matching and fixing groove 152.

[0034] Depend on Figure 2As shown, a movable knife flange 322 is formed on the left and right sides of the aforementioned half-cutting movable knife 32 and at corresponding positions, and a movable knife flange limiting shoulder 316 is formed on the aforementioned half-cutting static knife 31 and at a position corresponding to the movable knife flange 322. When the half-cutting movable knife 32 moves upward to the extent that the upper surface of the aforementioned movable knife flange 322 contacts the aforementioned movable knife flange limiting shoulder 316, the half-cutting movable knife 32 stops moving upward.

[0035] The inclination direction of the aforementioned half-cutting static knife blade 315 is opposite to the inclination direction of the aforementioned half-cutting movable knife blade 321. More specifically, the half-cutting static knife blade 315 inclines from top to rearward and downward, while the half-cutting movable knife blade 321 inclines from front to rearward and upward.

[0036] See also Figure 4 and Figure 5 , showing a traveling frame 41 with traveling wheels 411 at the bottom, a gasoline engine 42 (referred to as "gasoline engine") arranged on the left side of the traveling frame 41 and equipped with a gasoline tank 421 and a cooling water tank 422 at the top, a hydraulic oil tank 43 arranged on the right side of the traveling frame 41 and provided with a pressure gauge 431 at the top, a hydraulic oil pump 44 drivingly connected to the gasoline engine 42 and driven by the gasoline engine 42 and arranged in the hydraulic oil tank 43, a reversing control valve 45 arranged at the top of the hydraulic oil tank 43 and connected to the oil circuit of the hydraulic oil pump 44, and a hydraulic clamp 46 that accompanies the aforementioned traveling frame 41 in a use state and is connected to the hydraulic clamp upper and lower oil inlet and return pipe interfaces 451 and 452 of the reversing control valve 45 by the hydraulic clamp upper oil inlet and return pipe 461 and the hydraulic clamp lower oil inlet and return pipe 462 respectively.

[0037] exist Figure 4 The wire cutting mechanism 5 is also shown, and the wire cutting mechanism 5 is connected to the ring cutting hydraulic oil cylinder inlet and return pipe interface 453 of the reversing control valve 45 through the ring cutting hydraulic oil cylinder inlet and return pipe interface 51 connected to the ring cutting hydraulic oil cylinder inlet and return pipe interface 51. The function of the wire cutting mechanism 5 mentioned here is to cut (i.e. cut off) the aluminum stranded wire and the steel core wire of the overhead wire at the same time. Its structure is basically the same except that the ring cutting knife is different from the half cutting knife 3 of the present application. Figure 4 and Figure 5 As shown, the aforementioned half-cut hydraulic cylinder oil inlet and return pipeline 1111 of the present application is matched with the half-cut hydraulic cylinder oil inlet and return pipe matching interface 454 of the reversing control valve 45. As can be seen from the above description, the ring-cut hydraulic cylinder oil inlet and return pipe matching interface 453 and the half-cut hydraulic cylinder oil inlet and return pipe matching interface 454 are added to the reversing control valve 45 in order to adapt to the wire ring-cutting mechanism 5 and the overhead open wire half-cutting device of the present application respectively.

[0038] exist Figure 4 and Figure 5A first operating handle 455 and a second operating handle 456 are also shown.

[0039] As for the above-mentioned first operating handle 455, since it controls the upper and lower oil return pipe interfaces 451 and 452 of the hydraulic pliers, when the first operating handle 455 is moved to the left, oil flows out from the upper oil return pipe interface 451 of the hydraulic pliers, oil flows into the upper oil return pipe 461 of the hydraulic pliers, the piston of the hydraulic pliers 46 moves downward, oil returns (discharges) from the lower oil return pipe 462 of the hydraulic pliers, and oil flows into (i.e. returns) from the lower oil return pipe interface 452 of the hydraulic pliers; when the first operating handle 455 is moved to the right, the situation is opposite to the above, and when the first operating handle 455 is moved to the middle, the hydraulic pliers 46 is in a pressure maintaining state.

[0040] As for the above-mentioned second operating handle 456, when the second operating handle 456 is turned to the left, oil flows out of the annular hydraulic cylinder return oil pipe matching interface 453, and the annular hydraulic cylinder cylinder column piston rises; when the second operating handle 456 is turned to the middle position, oil returns to the annular hydraulic cylinder return oil pipe matching interface 453; when the second operating handle 456 is turned to the right, oil flows out of the half-cut hydraulic cylinder return oil pipe matching interface 454, and the half-cut hydraulic cylinder cylinder column 15 moves upward; when the second operating handle 456 is turned to the center position, oil returns to the half-cut hydraulic cylinder return oil pipe matching interface 454.

[0041] Since the structure and working principle of the aforementioned wire hydraulic crimping machine 4 are basically the same as those of the prior art, for example, reference can be made to the "threaded steel sleeve cold extruder" recommended by CN2263558Y, the "hydraulic wire crimping pliers with overload protection function" introduced by CN100421315C, the "hydraulic wire crimping machine" disclosed by CN2742641Y, and the "hydraulic oil circulation filter mechanism of the wire hydraulic crimping machine" disclosed by CN102011768A, etc. Therefore, the applicant will not elaborate on them.

[0042] Combination Figures 1 to 5When the conductor, i.e., the overhead aluminum stranded wire, is to be cut, the left pin 27 and / or the right pin 28 are pulled out, and the conductor is introduced (pulled) between the half-cut static knife 31 and the half-cut movable knife 32, and preferably, a limiting component such as a clamp is used to limit the conductor on both sides to prevent the aluminum stranded wire of the conductor from spreading out at the incision site, and then the left pin 27 and / or the right pin 28 are returned. Under the operation of the wire hydraulic crimping machine 4, and the construction personnel operate the aforementioned second operating handle 456, so that the hydraulic oil enters the structural system of the half-cut hydraulic mechanism 1 through the half-cut hydraulic cylinder return oil pipeline 1111 and enters the lower part of the aforementioned half-cut hydraulic cylinder cylinder piston 151 and pushes the half-cut hydraulic cylinder cylinder piston 151 to move upward together with the half-cut movable knife 32 under the reaction force of the cylinder column reset action spring 13. When the half-cut movable knife 32 moves upward to the point where its movable knife flange 322 is blocked by the movable knife flange limit shoulder 316, the half-cut movable knife 32 no longer moves upward. At this time, the aluminum stranded wire is cut off, while the steel core wire remains in its original state and is not damaged due to the area corresponding to the semi-circular concave cavities 3211 and 3151 of the movable and static knife blades. After cutting the aluminum stranded wire, under the restoring force of the aforementioned cylinder column reset action spring 13, the half-cut hydraulic cylinder cylinder piston 151 moves downward and resets. The hydraulic oil previously located below the half-cut hydraulic cylinder piston 151 passes through the half-cut hydraulic cylinder oil return hole 112, the half-cut hydraulic cylinder oil return pipe interface 111, the half-cut hydraulic cylinder oil return pipe 1111, the half-cut hydraulic cylinder oil return pipe matching interface 454 and the reversing control valve 45 until it returns to the hydraulic oil tank 43. First, the utility model is moved away from the conductor, and then the construction personnel use the hydraulic pliers 46 to crimp the steel core wire with the steel casing, and then sleeve the aluminum casing on the part where the aluminum strands are cut.

[0043] In summary, the technical solution provided by the utility model makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. An overhead wire half-cutting device, characterized in that: The invention comprises a half-cutting hydraulic mechanism (1), a half-cutting knife holder (2) and a half-cutting knife (3). The half-cutting hydraulic mechanism (1) comprises a half-cutting hydraulic cylinder lower cylinder body (11), a half-cutting hydraulic cylinder upper cylinder body (12) and a cylinder column reset action spring (13). A half-cutting hydraulic cylinder oil inlet and return pipe interface (111) is provided on the lower side of the half-cutting hydraulic cylinder lower cylinder body (11). When in use, the half-cutting hydraulic cylinder oil inlet and return pipe interface (111) extends to the half-cutting hydraulic cylinder lower cylinder body (11). 1) is connected to a wire hydraulic crimping machine (4) through a half-cut hydraulic cylinder oil inlet and return pipeline (1111), one end of the half-cut hydraulic cylinder oil inlet and return pipeline interface (111) facing the half-cut hydraulic cylinder lower cylinder body (11) is communicated with a half-cut hydraulic cylinder oil inlet and return hole (112) provided in the half-cut hydraulic cylinder lower cylinder body (11), the lower end inner wall of the half-cut hydraulic cylinder upper cylinder body (12) is threadedly fixed to the upper end outer wall of the half-cut hydraulic cylinder lower cylinder body (11), and the cylinder column reset action spring The spring (13) is sleeved on a half-cut hydraulic cylinder column (15) arranged in a cylinder cavity (14) formed by the upper and lower cylinder bodies (12, 11) of the half-cut hydraulic cylinder. The lower end of the cylinder column reset spring (13) is supported on a half-cut hydraulic cylinder column piston (151) arranged at the lower end of the half-cut hydraulic cylinder column (15), and the upper end of the cylinder column reset spring (13) is supported on a side of the top wall of the upper cylinder body (12) of the half-cut hydraulic cylinder facing the cylinder cavity (14). The oil inlet and return holes (112) of the half-cut hydraulic cylinder are in communication with the cylinder cavity (14) located in the lower area of ​​the half-cut hydraulic cylinder cylinder piston (151); the half-cut knife holder (2) together with the half-cut knife (3) are arranged on the top of the half-cut hydraulic cylinder upper cylinder body (12); the upper end of the half-cut hydraulic cylinder cylinder column (15) is fixed to the lower part of the half-cut knife (3) via the cylinder column clearance hole (121) provided at the central position of the half-cut hydraulic cylinder upper cylinder body (12).

2. The overhead wire half-cutting device according to claim 1, characterized in that: A lower cylinder body stabilizing support seat (113) is fixed at the bottom of the lower cylinder body (11) of the half-cut hydraulic cylinder for stably supporting the lower cylinder body (11) of the half-cut hydraulic cylinder longitudinally on the ground when in use; a lower cylinder body outer thread (114) is formed on the upper end outer wall of the lower cylinder body (11) of the half-cut hydraulic cylinder, and an upper cylinder body inner thread (122) is formed on the lower end inner wall of the upper cylinder body (12) of the half-cut hydraulic cylinder, and the upper cylinder body inner thread (122) is threadedly fixed to the lower cylinder body outer thread (114).

3. The overhead wire half-cutting device according to claim 1, characterized in that: A left connecting ear (123) and a right connecting ear (124) of the upper cylinder body extend upward from the top of the upper cylinder body (12) of the half-cut hydraulic oil cylinder. The left connecting ear (123) and the right connecting ear (124) of the upper cylinder body are respectively spaced 180 degrees apart in the circumferential direction around the top of the upper cylinder body (12) of the half-cut hydraulic oil cylinder and are in a face-to-face corresponding state. The cylinder column clearance hole (121) corresponds to between the left and right connecting ears (123, 124) of the upper cylinder body. The half-cutting knife holder (2) together with the half-cutting knife (3) are connected to the left connecting ear (123) and the right connecting ear (124) of the upper cylinder body at the top of the upper cylinder body (12) of the half-cut hydraulic oil cylinder.

4. The overhead wire half-cutting device according to claim 3, characterized in that: A half-cutting knife matching fixing groove (152) is formed on the top of the half-cutting hydraulic cylinder column (15); an upper cylinder body left connecting ear pin hole (1231) is provided on the upper cylinder body left connecting ear (123), and an upper cylinder body right connecting ear pin hole (1241) is provided on the upper cylinder body right connecting ear (124).

5. The overhead wire half-cutting device according to claim 4, characterized in that: The half-cutting knife holder (2) comprises a front left clamping block (21), a front right clamping block (22), a rear left clamping block (23) and a rear right clamping block (24); the front left clamping block (21) is located at the front side of the left connecting ear (123) of the upper cylinder body, and front left clamping block bolt holes (211) are arranged at intervals in the height direction of the front left clamping block (21); the front right clamping block (22) is located at the front side of the right connecting ear (124) of the upper cylinder body, and the front right clamping block (2 2), front right clamp block bolt holes (221) are spaced apart in the height direction, a rear left clamp block (23) is located at the rear side of the left connecting ear (123) of the upper cylinder body, and rear left clamp block bolt holes (231) are spaced apart in the height direction of the rear left clamp block (23), a rear right clamp block (24) is located at the rear side of the right connecting ear (124) of the upper cylinder body, and rear right clamp block bolt holes (241) are spaced apart in the height direction of the rear right clamp block (24);The half-cutting knife (3) comprises a half-cutting static knife (31) and a half-cutting movable knife (32), the half-cutting static knife (31) is located above the half-cutting movable knife (32), a half-cutting static knife left fixing bolt through hole (311) is arranged at intervals on the left side of the half-cutting static knife (31) in the height direction, and a half-cutting static knife right fixing bolt through hole (312) is arranged at intervals on the right side of the half-cutting static knife (31) in the height direction, and a left pad (313) is arranged between the left rear of the half-cutting static knife (31) and the rear left clamping block (23), and the half-cutting static knife (31) is provided with a left pad (313). A right pad block (314) is arranged between the right rear side of the left pad block (313) and the rear right clamp block (24); a left pad block hole (3131) is provided on the left pad block (313) at a position corresponding to the rear left clamp block bolt hole (231); a right pad block hole (3141) is provided on the right pad block (314) at a position corresponding to the rear right clamp block bolt hole (241); a group of half-cut static knife left fixing bolts (25) pass through the front left clamp block bolt hole (211), the half-cut static knife left fixing bolt through hole (311), and the left pad block hole (3131) in sequence. and the rear left clamping block bolt hole (231) and is locked by a left locking nut (251) screwed on the end of the half-cut static knife left fixing bolt (25), a group of half-cut static knife right fixing bolts (26) sequentially pass through the front right clamping block bolt hole (221), the half-cut static knife right fixing bolt through hole (312), the right pad hole (3141) and the rear right clamping block bolt hole (241) and is locked by a right locking nut (261) screwed on the end of the half-cut static knife right fixing bolt (26), and the lower middle part of the half-cut movable knife (32) is connected to the half-cut hydraulic The half-movable cutting blade at the top of the oil cylinder column (15) is fixed with the fixing groove (152), the lower part of the front left clamping block (21) and the lower part of the rear left clamping block (23) are connected to the left connecting ear (123) of the upper cylinder body through the left pin shaft (27) at the position corresponding to the left connecting ear pin hole (1231) of the upper cylinder body, and the lower part of the front right clamping block (22) and the lower part of the rear right clamping block (24) are connected to the right connecting ear (124) of the upper cylinder body through the right pin shaft (28) at the position corresponding to the right connecting ear pin hole (1241) of the upper cylinder body. ; 6. The overhead wire half-cutting device according to claim 5, characterized in that: The half-cutting static knife (31) has a half-cutting static knife blade (315), and the half-cutting static knife blade (315) faces downward, and the half-cutting movable knife (32) has a half-cutting movable knife blade (321), and the half-cutting movable knife blade (321) faces upward.

7. The overhead wire half-cutting device according to claim 6, characterized in that: A semicircular concave cavity (3151) of the static blade is formed in the middle of the length direction of the half-cut static blade (315), and a semicircular concave cavity (3211) of the dynamic blade is formed in the middle of the length direction of the half-cut dynamic blade (32) and at a position corresponding to the semicircular concave cavity (3151) of the static blade. The diameter of the full circular cavity formed by the semicircular concave cavity (3151) of the static blade and the semicircular concave cavity (3211) of the dynamic blade is adapted to the outer diameter of the steel strand.

8. The overhead wire half-cutting device according to claim 5, characterized in that: A movable knife locking screw (153) communicating with the half-cutting movable knife matching fixing groove (152) and used for locking the half-cutting movable knife (32) at the position of the half-cutting movable knife matching fixing groove (152) is provided on the upper end side of the half-cutting hydraulic cylinder column (15) and at a position corresponding to the half-cutting movable knife matching fixing groove (152).

9. The overhead wire half-cutting device according to claim 5, characterized in that: A movable knife flange (322) is formed on the left and right sides of the half-cut movable knife (32) at positions corresponding to each other, and a movable knife flange limiting shoulder (316) is formed on the half-cut static knife (31) at a position corresponding to the movable knife flange (322). When the half-cut movable knife (32) moves upward to the extent that the upper surface of the movable knife flange (322) contacts the movable knife flange limiting shoulder (316), the half-cut movable knife (32) stops moving upward.

10. The overhead wire half-cutting device according to claim 6, characterized in that: The inclination direction of the half-cutting static knife blade (315) is opposite to the inclination direction of the half-cutting movable knife blade (321); the half-cutting static knife blade (315) is inclined from top to rearward and downward, and the half-cutting movable knife blade (321) is inclined from front to rearward and upward.

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