Liftable cleat device for movable crossing frame

Abstract

The utility model relates to a liftable cleat device for a movable crossing frame, and belongs to the technical field of power line crossing construction equipment. The device is composed of a cavel lifting mechanism, a lifting driving module, an umbrella-shaped crossing frame control system and a remote controller. The cavel lifting mechanism is installed on the outer side of an upper cross beam of a main bearing truss of the umbrella-shaped crossing frame. When the device is used for old power line dismounting operation, the cleats can be lowered before arrangement between an upper power line and a lower power line, and then the cleats are unfolded upwards after arrangement, so that the requirement for the distance between the upper power line and the lower power line at the intersection of the power lines is lowered; when the crossing frame is withdrawn after the crossing construction of a newly built line is finished, the cleats are lowered downwards, so that the movable umbrella-shaped crossing frame can be smoothly withdrawn between an upper power line and a lower power line. The problem that an existing movable umbrella-shaped crossing frame claw adopts an obliquely upward fixing structure, so that the movable umbrella-shaped crossing frame cannot be suitable for construction with a small height distance of a cross point of an upper power line and a lower power line is solved.

Description

Technical Field

[0001] The utility model relates to a liftable horn device for a mobile spanning frame, belonging to the technical field of mechanized equipment for power line spanning construction. Background Art

[0002] In the line construction of power construction, it is inevitable to carry out three-span operations, that is, to span roads, railways and power lines. In order to protect these facilities and ensure the safety of construction personnel, it is necessary to erect a spanning frame to protect them. Among the three-span operations, the contradiction is most prominent especially when spanning energized lines. The main methods of traditional spanning frame erection or arrangement techniques are to use wood, bamboo or steel pipes as the main materials, and manually build the spanning frame from bottom to top on both sides of the object to be spanned to ensure the formation of a safe supporting device during line construction and meet the safety requirements of line construction; traditional spanning frame erection construction is high-altitude operation, there are great safety hazards during construction, and power outage operation must be carried out. However, ensuring the uninterrupted power supply of the power supply line is the social responsibility of the power industry and the service goal pursued. Therefore, when the line construction in power construction spans energized lines, ensuring power supply and ensuring safety are two difficult-to-reconcile contradictions, resulting in great difficulty in obtaining approval for power outage applications from the line construction department. In desperation, some construction units even carry out illegal construction of completely non-power-outage spanning. Completely non-power-outage spanning construction means that when erecting a line to span an energized line, the energized line to be spanned is not powered off during the entire construction process from spanning frame arrangement, line erection construction to spanning frame evacuation.

[0003] In order to solve this difficult-to-reconcile contradiction, a mobile automatic rapid deployment spanning frame is disclosed in the prior art, with the publication number CN205452971U. This spanning frame realizes the protection of the object to be spanned by supporting the umbrella-shaped spanning frame above the object to be spanned by a truck crane; a mobile umbrella-shaped spanning frame with rotation and pitching functions is also disclosed in the prior art, with the publication number CN216598743U. This spanning frame realizes a mobile umbrella-shaped spanning frame with rotation and pitching functions, making it more convenient for on-site arrangement.

[0004] These mobile umbrella-shaped spanning frames in the prior art also expose imperfect aspects in the application of live-line spanning construction. Among them, the ram's horns adopt an inclined upward fixed structure, and the height dimension from the top of the ram's horns to the bottom of the netting platform is approximately 4 meters. In order to reduce the construction cost of line iron towers, the power line erection department will try to keep the tower height as low as possible on the premise of ensuring sufficient safety distance at the intersection of power lines and sufficient sag change distance. As a result, in many cases, the height difference between the construction line and the spanned line at the intersection is not much greater than the safety distance. In the line construction of power construction, the operations related to the conductor and ground wire can be divided into two types: removing the old line operation and erecting the new line operation. First, in the old line removal operation, when using a mobile umbrella-shaped spanning frame for live-line spanning protection, if the height distance between the two lines at the spanning point is limited, it is often because the ram's horn height of the mobile umbrella-shaped spanning frame is relatively high, so when the mobile umbrella-shaped spanning frame enters between the two lines, the spanned line needs to be powered off first, then the spanning frame is raised after it enters, and then the power supply of the spanned power line is restored. Second, a similar problem may also occur when removing the spanning frame after the construction of the new line is completed. This is because when the spanned line is live, the spanning frame must ensure a safe distance from the spanned live line, and the spanning frame cannot be moved downward to a position less than the safe distance. However, the inclined upward fixed structure ram's horn frame adopted by the mobile umbrella-shaped spanning frame in the prior art is not applicable to various live-line spanning constructions. Therefore, in order to ensure construction safety and make the mobile umbrella-shaped spanning frame applicable to various live-line spanning constructions, it is necessary to improve the ram's horn structure of the existing mobile umbrella-shaped spanning frame and reduce the self-height of the mobile umbrella-shaped spanning frame after it is deployed. Summary of the Invention

[0005] The purpose of the present utility model is to provide a liftable ram's horn device for a mobile spanning frame, which can lower the ram's horns downward before arranging the mobile spanning frame between the upper and lower power lines for the old line removal operation, and then expand the ram's horns upward after arranging them at the designated position; when evacuating the mobile umbrella-shaped spanning frame after the completion of the new line spanning construction, first lower the ram's horns downward to ensure that the mobile spanning frame can smoothly evacuate from the arrangement position between the upper and lower power lines.

[0006] The present utility model realizes the above purpose through the following technical solutions:

[0007] A liftable horn device for a mobile spanning frame, comprising a horn lifting mechanism, a lifting drive module, an umbrella-shaped spanning frame control system and a remote controller, characterized in that: the horn lifting mechanism is installed on the outer side of the upper cross beam of the main load-bearing truss of the umbrella-shaped spanning frame; the lifting drive module is installed on the upper cross beam of the main load-bearing truss through a screw rod bearing seat mounting plate and a screw rod tail seat with a card slot; the umbrella-shaped spanning frame control system is fixedly installed at the lower part of the main load-bearing truss; the remote controller is held and operated by an operator of the spanning frame, and the remote controller is wirelessly connected to the umbrella-shaped spanning frame control system.

[0008] The horn lifting mechanism consists of the upper cross beam of the main load-bearing truss, horn rods, horn struts and pin shafts. Horn rod hinge seats, screw rod bearing seat mounting plates and screw rod tail seats with card slots are welded on the upper cross beam of the main load-bearing truss; lower hinge seats and upper hinge seats are respectively welded at both ends of the horn rods, and head hinge seats and tail hinge seats are respectively welded at both ends of the horn struts; the lower hinge seat of the horn rod is hinged to the horn rod hinge seat on the upper cross beam of the main load-bearing truss, the upper hinge seat of the horn rod is hinged to the head hinge seat of the horn strut, and the tail hinge seat of the horn strut is hinged to the screw rod nut of the lifting drive module; the horn rod is lifted by driving the screw rod nut to move through the T-shaped screw rod of the lifting drive module.

[0009] The lifting drive module consists of a drive motor, a planetary reducer, a reducer mounting seat, a locking nut, a screw rod bearing seat, a double-row tapered roller bearing, a bearing end cover, a T-shaped screw rod, a screw rod nut, a screw rod nut guide plate, a deep groove ball bearing and a control cable. The screw rod nut guide plate is installed between the deep groove ball bearing and the screw rod bearing seat. One end of the T-shaped screw rod is installed on the screw rod tail seat with a card slot through the deep groove ball bearing, and the other end of the T-shaped screw rod is installed in the screw rod nut guide plate through the screw rod bearing seat, the double-row tapered roller bearing and the bearing end cover. A screw rod nut is installed on the T-shaped screw rod, and a locking nut is installed on the T-shaped screw rod on one side of the screw rod bearing seat. The screw rod bearing seat is connected to the screw rod bearing seat mounting plate on the upper cross beam of the main load-bearing truss through bolts; the planetary reducer is installed on the right side of the screw rod nut guide plate through the reducer mounting seat, and the drive motor is installed on the right side of the planetary reducer.

[0010] The drive motor is connected to the umbrella-shaped spanning frame control system through a control cable, and the drive motor is controlled by the remote controller to rotate forward and backward to drive the T-shaped screw rod to rotate forward and backward.

[0011] Key connections are adopted between the planetary reducer, the drive motor and the T-shaped screw rod to transmit the torque of the drive motor.

[0012] Guide grooves are made on the screw rod nut guide plate, and the screw rod nut slides in the guide grooves.

[0013] On the end of the upper cross beam of the main load-bearing truss where the horn strut is installed, a screw rod tailstock with a card slot is made, and the highest and lowest limit positions of the horn strut are controlled through the screw rod tailstock with a card slot.

[0014] The beneficial effects of the present utility model compared with the prior art are as follows:

[0015] The liftable horn device for the mobile spanning frame controls the lifting of the horn device by using a remote controller. When used for demolition work, the horn can be lowered downward before being arranged between the upper and lower two power lines, and then the horn can be unfolded upward after being arranged at the designated position, reducing the distance requirements for the upper and lower two power lines at the intersection of the power lines. Moreover, when the horn is unfolded upward, it can meet the requirement of preventing the falling conductor from bouncing up and sliding out of the spanning frame; when evacuating the mobile umbrella-shaped spanning frame after the construction of the new line crossing is completed, first lower the horn downward to ensure that the mobile umbrella-shaped spanning frame can smoothly evacuate from the arrangement position between the upper and lower two power lines. It solves the problem that the inclined upward fixed structure adopted by the existing mobile umbrella-shaped spanning frame makes the horn frame inapplicable to various fully non-stop power line crossing constructions. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a liftable horn device for a mobile spanning frame;

[0017] Figure 2 It is a sectional structural diagram of the lifting drive module of the horn device;

[0018] Figure 3 It is a front view structural diagram of the lifting drive module of the horn device;

[0019] Figure 4 It is a schematic structural diagram of the lifting mechanism of the horn device;

[0020] Figure 5 It is a schematic structural diagram of the screw nut and the horn strut of the horn device;

[0021] Figure 6 It is a three-dimensional structural diagram of the liftable horn device installed on the mobile spanning frame;

[0022] Figure 7 For Figure 6 The enlarged view at position A of

[0023] Figure 8 It is a developed front view structural diagram of the liftable horn device installed on the mobile spanning frame.

[0024] In the figure: 1. Ram lifting mechanism; 101. Upper cross beam of main load-bearing truss; 10101. Ram rod hinge seat; 10102. Mounting plate for screw rod bearing seat; 10103. Screw rod tail seat with card slot; 102. Ram rod; 10201. Lower hinge seat of ram rod; 10202. Upper hinge seat of ram rod; 103. Ram brace; 10301. Head hinge seat of ram brace; 10302. Tail hinge seat of ram brace; 104. Pin shaft; 2. Lifting drive module; 201. Drive motor; 202. Planetary reducer; 203. Reducer mounting seat; 204. Locking nut; 205. Screw rod bearing seat; 206. Double-row tapered roller bearing; 207. Bearing end cover; 208. T-shaped screw rod; 209. Screw rod nut; 210. Guide plate for screw rod nut; 211. Deep groove ball bearing; 212. Control cable; 3. Umbrella-shaped spanning frame control system; 4. Remote controller; 5. U-shaped structure area; 6. Crossed line; 7. Old conductor; 8. Crane; 9. Umbrella-shaped spanning frame. Detailed implementation mode

[0025] See the appendix Figure 1-8 As shown, the liftable ram device for a mobile spanning frame includes a ram lifting mechanism 1, a lifting drive module 2, an umbrella-shaped spanning frame control system 3, and a remote controller 4. The ram lifting mechanism 1 is installed on the outer side of the upper cross beam 101 of the main load-bearing truss of the umbrella-shaped spanning frame. The lifting drive module 2 is installed on the upper cross beam 101 of the main load-bearing truss through a mounting plate 10102 for the screw rod bearing seat and a screw rod tail seat 10103 with a card slot. The umbrella-shaped spanning frame control system 3 is fixedly installed at the lower part of the main load-bearing truss. The remote controller 4 is held and operated by the operator of the spanning frame. The remote controller 4 is wirelessly connected to the umbrella-shaped spanning frame control system 3.

[0026] Furthermore, the ram's horn lifting mechanism 1 is composed of an upper crossbeam 101 of the main bearing truss, a ram's horn rod 102, a ram's horn support rod 103 and a pin shaft 104. The upper crossbeam 101 of the main bearing truss is welded with a ram's horn rod hinge seat 10101, a screw bearing seat mounting plate 10102 and a screw tail seat 10103 with a slot; the two ends of the ram's horn rod 102 are respectively welded with a lower hinge seat 10201 and an upper hinge seat 10202, and the two ends of the ram's horn support rod 103 are respectively welded with a head hinge seat 10301 and The tail hinge seat 10302; the lower hinge seat 10201 of the horn rod 102 is hinged to the horn rod hinge seat 10101 of the upper crossbeam 101 of the main bearing truss, the upper hinge seat 10202 of the horn rod 102 is hinged to the head hinge seat 10301 of the horn support rod 103, and the tail hinge seat 10302 of the horn support rod 103 is hinged to the screw nut 209 of the lifting drive module 2; the horn rod 102 is lifted and lowered by driving the screw nut 209 through the T-shaped screw 208 of the lifting drive module 2. A screw tailstock 10103 with a slot is made on the end of the upper crossbeam 101 of the main bearing truss where the ram's horn support rod 103 is installed. The screw tailstock 10103 with a slot is directly welded to the upper crossbeam 101 of the main bearing truss, and can clamp the ram's horn support rod 103 when the ram's horn is at its highest or lowest point. The highest and lowest limit positions of the ram's horn support rod 103 are controlled by the screw tailstock 10103 with a slot, thereby improving the stability of the ram's horn and ensuring that no large shaking occurs when the wire rubs against the ram's horn support rod 103 during construction.

[0027] Furthermore, the lifting drive module 2 is composed of a drive motor 201, a planetary speed reducer 202, a speed reducer mounting seat 203, a locking nut 204, a lead screw bearing seat 205, a double-row tapered roller bearing 206, a bearing end cover 207, a T-shaped lead screw 208, a lead screw nut 209, a lead screw nut guide plate 210, a deep groove ball bearing 211, and a control cable 212. One end of the T-shaped lead screw 208 is installed on the lead screw tail seat 10103 with a card slot through the deep groove ball bearing 211; the other end of the T-shaped lead screw 208 is installed with a lead screw bearing seat 205, a double-row tapered roller bearing 206, a bearing end cover 207, etc., and is connected to the lead screw bearing seat mounting plate 10102 of the upper cross beam 101 of the main load-bearing truss through the lead screw bearing seat 205 using bolts; a lead screw nut 209 is installed on the T-shaped lead screw 208; a locking nut 204 is installed on the T-shaped lead screw 208 on one side of the lead screw bearing seat 205, and the bearing clearance is adjusted using the locking nut 204 to ensure smooth rotation of the T-shaped lead screw 208; the planetary speed reducer 202 is installed on the right side of the lead screw bearing seat 205 through the speed reducer mounting seat 203, and the drive motor 201 is installed on the right side of the planetary speed reducer 202; the torque of the drive motor 201 is transmitted between the planetary speed reducer 202, the drive motor 201, and the T-shaped lead screw 208 by key connection. The lead screw nut guide plate 210 is installed between the deep groove ball bearing 211 and the lead screw bearing seat 205, and a guide groove is made on the lead screw nut guide plate 210, and the lead screw nut 209 slides in the guide groove.

[0028] Furthermore, the drive motor 201 is connected to the umbrella-shaped spanning frame control system 3 through the control cable 212, and the forward and reverse rotation of the drive motor 201 is controlled by the remote controller 4 to drive the forward and reverse rotation of the T-shaped lead screw 208, and then the ram rod 102 and the ram strut 103 are raised and lowered through the movement of the lead screw nut 209.

[0029] The working process of the liftable ram device 1 for the mobile spanning frame when removing the old conductor is as follows:

[0030] 1. First, park the crane 8 at the designated position for the old conductor removal construction. After adjusting the parking angle of the crane 8, lower the hydraulic outriggers, firmly erect the crane 8, and at the same time ground the crane 8.

[0031] 2. Then, turn on the power switch of the umbrella-shaped spanning frame 9 and dock the umbrella-shaped spanning frame 9 with the crane 8.

[0032] 3. After the docking is completed, operate the crane 8 to lift the umbrella-shaped spanning frame 9 to an open area, and operate the remote controller 4 to unfold the umbrella-shaped spanning frame 9.

[0033] 4. After the umbrella-shaped spanning frame 9 is unfolded, operate the remote controller 4 to lower the liftable horn device 1 to the horizontal state, facilitating the entry of the umbrella-shaped spanning frame 9 between the energized conductor 6 and the old conductor 7 to be removed;

[0034] 5. After the liftable horn device 1 is lowered to the horizontal state, operate the crane 8 and the remote controller 4 to deploy the umbrella-shaped spanning frame 9 above the energized conductor 6 to be protected;

[0035] 6. After the umbrella-shaped spanning frame 9 is deployed in place, operate the remote controller 4 to adjust the liftable horn device 1 to the highest state;

[0036] 7. After the liftable horn device 1 is adjusted to the highest state, the operation of removing the old conductor 7 can be carried out; after the liftable horn device 1 is adjusted to the highest state, a U-shaped structural area 5 is formed at the top of the umbrella-shaped spanning frame 9, which can effectively prevent the old conductor 7 from swinging out of the protection range of the umbrella-shaped spanning frame 9 due to factors such as wind deflection. The horn rod 102 of the liftable horn device 1 will block the old conductor 7 within the U-shaped structural area 5, avoiding accidents. During the operation of removing the old conductor 7, if a spanning wire break accident occurs, even if the old conductor 7 hits the horn rod 102 of the liftable horn device 1, since the horn rod 102 at the highest position has a certain inclination angle, and the acting force when the old conductor 7 contacts the horn rod 102 is always perpendicular to the axis of the horn rod 102 and downward, the inclination angle of the horn rod 102 can decompose the acting force between the old conductor 7 and the horn rod 102 into a horizontal force and a vertically downward force, which can greatly reduce the downward impact force on the umbrella-shaped spanning frame 9 and improve the anti-overturning ability of the umbrella-shaped spanning frame 9.

Claims

1. A liftable cleat device for a mobile crossing frame, comprising a cleat lifting mechanism (1), a lifting drive module (2), an umbrella-shaped crossing frame control system (3) and a remote controller (4), characterized in that: The sheep's horn lifting mechanism (1) is installed on the outer side of the upper cross beam (101) of the main load-bearing truss of the umbrella-shaped spanning frame. The lifting drive module (2) is installed on the upper cross beam (101) of the main load-bearing truss through the screw rod bearing seat mounting plate (10102) and the screw rod tail seat with a card slot (10103). The umbrella-shaped spanning frame control system (3) is fixedly installed at the lower part of the main load-bearing truss. The remote controller (4) is held and operated by the operator of the spanning frame. The remote controller (4) is wirelessly connected to the umbrella-shaped spanning frame control system (3).

2. The liftable horn device for a mobile spanning frame according to claim 1, wherein: The sheep's horn lifting mechanism (1) consists of the upper cross beam (101) of the main load-bearing truss, the sheep's horn rod (102), the sheep's horn support rod (103) and the pin shaft (104). The sheep's horn rod hinge seat (10101), the screw rod bearing seat mounting plate (10102) and the screw rod tail seat with a card slot (10103) are welded on the upper cross beam (101) of the main load-bearing truss. The lower hinge seat (10201) and the upper hinge seat (10202) are respectively welded at both ends of the sheep's horn rod (102). The head hinge seat (10301) and the tail hinge seat (10302) are respectively welded at both ends of the sheep's horn support rod (103). The lower hinge seat (10201) of the sheep's horn rod (102) is hinged to the sheep's horn rod hinge seat (10101) of the upper cross beam (101) of the main load-bearing truss. The upper hinge seat (10202) of the sheep's horn rod (102) is hinged to the head hinge seat (10301) of the sheep's horn support rod (103). The tail hinge seat (10302) of the sheep's horn support rod (103) is hinged to the screw rod nut (209) of the lifting drive module (2). The sheep's horn rod (102) drives the screw rod nut (209) to move through the T-shaped screw rod (208) of the lifting drive module (2) to realize lifting and lowering.

3. The liftable horn device for a mobile spanning frame according to claim 1, characterized in that: The lifting drive module (2) consists of a drive motor (201), a planetary reducer (202), a reducer mounting seat (203), a locking nut (204), a lead screw bearing seat (205), a double-row tapered roller bearing (206), a bearing end cover (207), a T-shaped lead screw (208), a lead screw nut (209), a lead screw nut guide plate (210), a deep groove ball bearing (211), and a control cable (212). One end of the T-shaped lead screw (208) is installed on the lead screw tail seat with a groove (10103) through the deep groove ball bearing (211); the other end of the T-shaped lead screw (208) is installed with a lead screw bearing seat (205), a double-row tapered roller bearing (206), and a bearing end cover (207), and is connected to the lead screw bearing seat mounting plate (10102) of the upper cross beam (101) of the main load-bearing truss through the lead screw bearing seat (205) using bolts; a lead screw nut (209) is installed on the T-shaped lead screw (208); a locking nut (204) is installed on the T-shaped lead screw (208) on one side of the lead screw bearing seat (205), and the bearing clearance is adjusted using the locking nut (204) to ensure smooth rotation of the T-shaped lead screw (208); a planetary reducer (202) is installed on the right side of the lead screw bearing seat (205) through a reducer mounting seat (203), and a drive motor (201) is installed on the right side of the planetary reducer (202); a key connection is used between the planetary reducer (202), the drive motor (201), and the T-shaped lead screw (208) to transmit the torque of the drive motor (201); the lead screw nut guide plate (210) is installed between the deep groove ball bearing (211) and the lead screw bearing seat (205), and a guide groove is made on the lead screw nut guide plate (210), and the lead screw nut (209) slides in the guide groove.

4. The liftable horn device for a mobile spanning frame according to claim 3, characterized in that: The drive motor (201) is connected to the umbrella-shaped crossing frame control system (3) through the control cable (212), and the forward and reverse rotation of the drive motor (201) is controlled by the remote controller (4) to drive the forward and reverse rotation of the T-shaped lead screw (208), and then the ram rod (102) and the ram strut (103) are raised and lowered through the movement of the lead screw nut (209).

5. The liftable cleat device for a mobile crossing frame according to claim 3, characterized in that: A guide groove is made on the lead screw nut guide plate (210), and the lead screw nut (209) slides in the guide groove.

6. The liftable horn device for a mobile spanning frame according to claim 2, wherein: A lead screw tail seat with a groove (10103) is made at the end of the upper cross beam (101) of the main load-bearing truss where the ram strut (103) is installed, and the highest and lowest limit positions of the ram strut (103) are controlled through the lead screw tail seat with a groove (10103).

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