Lifting mechanism of crossing frame

Abstract

The utility model relates to the technical field of crossing frames, in particular to a lifting mechanism of a crossing frame. Comprising mounting seats, the mounting seats are mounted at the tops of the two tower column combined frames, pulleys are rotationally connected to the mounting seats, inhaul cables are connected to the positions, corresponding to the mounting seats, of the cross arm combined frame, the outer side faces of the inhaul cables are correspondingly connected to the pulleys in a sliding mode, and the ends, away from the cross arm combined frame, of the two inhaul cables are connected to the same winding device. The two inhaul cables are wound at the same time through the same winding device, the consistency of the two inhaul cables in the working process can be guaranteed, the two inhaul cables can synchronously pull the cross arm combination frame to stably move on the two tower column combination frames at the same time, and therefore the situation that the cross arm combination frame inclines when lifted is avoided; abnormal abrasion between the cross arm combined frame and the tower column combined frame is reduced, and therefore smoothness and stability between the cross arm combined frame and the tower column combined frame are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of crossing frame, specifically relates to a lifting mechanism of crossing frame. BACKGROUND

[0002] In the engineering construction of electric power, communication and the like, the crossing frame is very widely used. The crossing frame is mainly used for protecting and supporting the crossed object in the construction process of overhead line, to ensure the construction safety and smooth progress. With the continuous development of engineering construction, the performance requirement of crossing frame is also higher and higher. The traditional crossing frame is usually fixed and built by using bamboo pole, wood pole or steel pipe and the like in longitudinal, horizontal and inclined directions in dense cross, which has many disadvantages. First, the manual carrying and assembling operation not only consumes time and effort, but also seriously affects the construction progress. Secondly, with the continuous increase of height, the workers inevitably need to build the operation at high place, which brings safety hazard to the construction.

[0003] Therefore, the company provides a crossing frame which can complete the construction more efficiently, safely and stably, the crossing frame comprises two tower column combined frames, the same cross arm combined frame is slidably connected to the two tower column combined frames, the first lifting mechanism for lifting the cross arm combined frame is arranged at the top of the two tower column combined frames, and the cross arm combined frame can be lifted to a proper height by driving the first lifting mechanism by the first winch device, so that the crossing frame is quickly built. However, in the actual use process, it is difficult to ensure the synchronization of the first lifting mechanisms when the two first lifting mechanisms are used to lift the same cross arm combined frame, and when the first lifting mechanisms are not synchronized, the cross arm combined frame will be inclined, and then abnormal wear or even jamming will occur between the cross arm combined frame and the tower column combined frame.

[0004] Therefore, how to ensure the smooth and stable between the cross arm combined frame and the tower column combined frame when lifting the cross arm combined frame is a problem that needs to be solved by those skilled in the art. UTILITY MODEL CONTENTS

[0005] In order to ensure the smooth and stable between the cross arm combined frame and the tower column combined frame when lifting the cross arm combined frame, the application provides a lifting mechanism of crossing frame.

[0006] The lifting mechanism of crossing frame provided by the application adopts the following technical scheme:

[0007] A lifting mechanism of crossing frame, comprising a mounting seat, the top of the two tower column combined frames is provided with the mounting seat, a pulley is rotatably connected to the mounting seat, a cable is connected to the cross arm combined frame corresponding to the mounting seat, the outer side of the cable is slidably connected to the pulley, and the ends of the two cables away from the cross arm combined frame are connected to the same winding device.

[0008] Further, the winding device comprises a rack, a winding shaft is rotatably connected to the rack, symmetrically arranged baffles are fixedly connected to the winding shaft, a winding drum is fixedly connected between the baffles, a pulling rope fixing assembly is symmetrically arranged on the winding drum, a driving assembly is installed on the rack, and the driving assembly is in transmission connection with the winding shaft.

[0009] Further, the pulling rope fixing assembly comprises a mounting drum, the mounting drum is rotatably mounted on the baffle at a position inside the winding drum, a mounting groove is formed on the winding drum corresponding to the pulling rope, and a locking piece is arranged inside the mounting drum corresponding to the pulling rope.

[0010] Further, the locking piece comprises a spring and a sliding block, the spring is fixedly installed inside the mounting drum, the sliding block is in sliding connection with the inside of the mounting drum, the spring and the sliding block are in abutting connection, a first through hole is formed on the sliding block, and a second through hole is formed on the mounting drum.

[0011] Further, an opening is arranged at one end of the mounting drum close to the sliding block, and a jacking rod is detachably connected to the opening of the mounting drum.

[0012] Further, a limiting ring is fixedly connected to the jacking rod, and the distance between the end face of the limiting ring and the end face of the jacking rod is configured to be able to push the sliding block and make the first through hole and the second through hole coincide.

[0013] Further, the jacking rod is arranged in a Z shape, one end of the jacking rod away from the limiting ring is arranged as a first driving rod, and a driving surface is formed in the inside of the opening corresponding to the first driving rod.

[0014] Further, a locking assembly is arranged on the baffle corresponding to the mounting drum, the locking assembly comprises a locking rod, a threaded hole is formed on the baffle, one end of the locking rod is fixedly connected with a threaded rod, the threaded hole is in threaded connection with the threaded rod, the threaded rod is fixedly connected with a second driving rod at an end away from the locking rod, the locking rod and the threaded rod are coaxially arranged, and the second driving rod is perpendicularly arranged with the threaded rod.

[0015] Further, the driving assembly comprises a motor, a speed reducer is in transmission connection with the output shaft of the motor, the output shaft of the speed reducer is in transmission connection with the winding shaft, and the motor and the speed reducer are both fixedly installed on the rack.

[0016] Further, a driving sprocket is fixedly connected to the output shaft of the speed reducer, a driven sprocket is fixedly connected to the winding shaft, and a chain is in transmission connection between the driving sprocket and the driven sprocket.

[0017] The beneficial effects achieved are:

[0018] The application can ensure the consistency of the two cables during the working process by winding the two cables simultaneously by the same winding device, so that the two cables can pull the cross arm assembly frame synchronously and move smoothly on the two tower column assembly frames, thereby avoiding the inclination of the cross arm assembly frame during lifting, reducing the abnormal wear between the cross arm assembly frame and the tower column assembly frame, and further ensuring the smooth and stable movement between the cross arm assembly frame and the tower column assembly frame. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the overall structure of an embodiment of the application.

[0020] Figure 2 is the overall structure of an embodiment of the application.

[0021] Figure 3 is Figure 2 is an enlarged schematic view of the first part of the structure.

[0022] Figure 4 is a three-dimensional structure schematic view of the winding device in an embodiment of the application.

[0023] Figure 5 is a structure exploded schematic view of the winding device in an embodiment of the application.

[0024] Figure 6 is a schematic view of the internal structure of the winding device in an embodiment of the application.

[0025] Figure 7 is Figure 6 is an enlarged schematic view of the second part of the structure.

[0026] BRIEF DESCRIPTION OF DRAWINGS: 100, lifting mechanism; 101, mounting seat; 102, pulley; 103, cable; 200, winding device; 201, rack; 202, winding shaft; 203, baffle; 204, winding drum; 300, cable fixing assembly; 301, mounting drum; 302, mounting groove; 303, opening; 304, top rod; 305, limiting ring; 306, first driving rod; 307, driving surface; 400, driving assembly; 401, motor; 402, speed reducer; 403, driving sprocket; 404, driven sprocket; 405, chain; 500, locking piece; 501, spring; 502, sliding block; 503, first through hole; 504, second through hole; 600, locking assembly; 601, locking rod; 602, screw hole; 603, screw rod; 604, second driving rod; 700, tower column assembly frame; 800, cross arm assembly frame. DETAILED DESCRIPTION

[0027] The application will be further described below with reference to the accompanying drawings. Figures 1-7 The application will be further described below with reference to the accompanying drawings.

[0028] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0030] The application discloses a lifting mechanism of a crossing frame.

[0031] Please refer to Figures 1 to 3 First of all, it should be pointed out that the crossing frame includes two tower column combined frames 700 and a cross arm combined frame 800, the tower column combined frame 700 and the cross arm combined frame 800 are slidably connected, the tower column combined frame 700 is provided with a lifting mechanism 100 connected with the cross arm combined frame 800 to drive the cross arm combined frame 800 to slide controllably on the tower column combined frame 700, so as to ensure the installation height of the cross arm combined frame 800.

[0032] Please refer to Figures 1 to 3 In an embodiment of the application, a lifting mechanism of a crossing frame, comprising a mounting seat 101 detachably mounted on the top of two tower column combined frames 700, two symmetrically arranged pulleys 102 are rotatably connected on the mounting seat 101, a pull cable 103 is connected on the cross arm combined frame 800 corresponding to the mounting seat 101, the outer side of the pull cable 103 is slidably connected on the pulley 102, and the two pull cables 103 are connected on the same winding device 200 away from the cross arm combined frame 800.

[0033] In use, the consistency of the two cables 103 during the operation can be ensured by winding the two cables 103 by the same winding device 200, the two cables 103 can pull the cross arm combined frame 800 synchronously and move smoothly on the two tower column combined frames 700, so that the inclination of the cross arm combined frame 800 during the lifting of the cross arm combined frame 800 is avoided, the abnormal wear between the cross arm combined frame 800 and the tower column combined frame 700 is reduced, and the smoothness between the cross arm combined frame 800 and the tower column combined frame 700 is ensured.

[0034] Please refer to Figures 1 to 3 In an embodiment of the present application, the winding device 200 comprises a rack 201, which can be fixedly installed on the ground according to the actual construction environment, or directly fixedly installed on the cross arm combined frame 800 when it is inconvenient to install on the ground, a winding shaft 202 is rotatably connected to the rack 201, symmetrically arranged baffles 203 are fixedly connected to the winding shaft 202, a winding drum 204 is fixedly connected between the baffles 203, cable fixing assemblies 300 are symmetrically arranged on the winding drum 204, a driving assembly 400 is installed on the rack 201, and the driving assembly 400 is in transmission connection with the winding shaft 202.

[0035] In use, first, the two ends of the two cables 103 away from the cross arm combined frame 800 are connected to the winding drum 204 through the cable fixing assemblies 300, then the winding shaft 202 is driven to rotate by the driving assembly 400, the winding shaft 202 drives the baffles 203 and the winding drum 204 to rotate after rotating, the winding drum 204 drives the two cables 103 to be wound and unwound at the same time when rotating, so as to pull the cross arm combined frame 800 to move smoothly on the two tower column combined frames 700 at the same time.

[0036] Please refer to Figures 1 to 7 In an embodiment of the present application, the cable fixing assembly 300 comprises a mounting drum 301 rotatably mounted on the baffle 203 at a position inside the winding drum 204, a mounting groove 302 is formed on the winding drum 204 corresponding to the cable 103, and a locking piece 500 is arranged inside the mounting drum 301 corresponding to the cable 103.

[0037] In use, the two ends of the two cables 103 away from the cross arm combined frame 800 are respectively threaded through the mounting grooves 302 and fixedly installed on the mounting drum 301 through the locking pieces 500, and then the mounting drum 301 is rotated to wind the cables 103 on the mounting drum 301, so that the initial position of the cables 103 can be adjusted, and the initial pre-tension of the two cables 103 is ensured to be equal.

[0038] Please refer to Figures 1 to 7In an embodiment of the present application, the driving assembly 400 comprises a motor 401, a speed reducer 402 is drivingly connected to an output shaft of the motor 401, and an output shaft of the speed reducer 402 is drivingly connected to the winding shaft 202. The motor 401 and the speed reducer 402 are both fixedly installed on the frame 201.

[0039] In use, the motor 401 usually has a high rotating speed, and the speed reducer 402 can reduce the rotating speed and greatly increase the output torque, so that the winding shaft 202 can easily cope with heavy load winding tasks, ensure sufficient power during starting, accelerating and stable operation, and avoid jamming. At the same time, the speed control function of the motor 401 combined with the speed reducer 402 can accurately control the rotating speed of the winding shaft 202, meet different winding speeds, and the rotating speed changes stably, reducing the impact damage to the pull cable 103. The combination of the motor 401 and the speed reducer 402 provides stable power output for the winding shaft 202, the speed reducer 402 bears the load and impact, reduces the influence of external interference, and reduces vibration and noise. It can also improve energy utilization efficiency, the motor 401 can operate in an efficient range under the action of the speed reducer 402, adapt to frequent start and stop operations, and reduce energy consumption. And it can be customized according to different working environments, special protective measures and materials are used in harsh environments to improve system reliability and durability.

[0040] Please refer to Figures 1 to 7 In an embodiment of the present application, a driving sprocket 403 is fixedly connected to an output shaft of the speed reducer 402, and a driven sprocket 404 is fixedly connected to the winding shaft 202. A chain 405 is drivingly connected between the driving sprocket 403 and the driven sprocket 404.

[0041] In use, the driving sprocket 403 and the chain 405 can drive the driven sprocket 404 to rotate. The chain transmission mode not only has high transmission efficiency, can accurately transmit power, but also has small energy loss, can efficiently drive the equipment to operate, and can ensure the efficiency of the winding work when driving the winding shaft 202 to rotate. At the same time, the chain transmission has strong carrying capacity, and the chain usually has high strength and large stiffness, can bear large tension and torque, and is suitable for heavy load and high strength working environment. The chain transmission can also work stably in harsh conditions such as high temperature, dust and moisture, has relatively low maintenance cost, simple structure, few parts, and convenient maintenance and replacement.

[0042] Of course, in other embodiments of the present application, gear transmission, belt transmission and other transmission modes can also be used to drive the winding shaft 202 to rotate.

[0043] Please refer to Figures 1 to 7In an embodiment of the present application, the locking member 500 comprises a spring 501 and a sliding block 502, the spring 501 is fixedly installed in the interior of the mounting cylinder 301, the sliding block 502 is slidingly connected in the interior of the mounting cylinder 301, the spring 501 and the sliding block 502 are in abutment connection, the first through hole 503 is formed in the sliding block 502, and the second through hole 504 is formed in the mounting cylinder 301.

[0044] In use, first push the sliding block 502 to make the first through hole 503 on the sliding block 502 coincide with the second through hole 504 on the mounting cylinder 301, and pass the cable 103 through the first through hole 503 and the second through hole 504 at the same time, under the action of the spring 501, the spring 501 will push the sliding block 502 to move in the interior of the mounting cylinder 301, the first through hole 503 and the second through hole 504 will be misaligned to make the cable 103 clamped between the mounting cylinder 301 and the sliding block 502, so that the fixing of the cable 103 can be realized.

[0045] Please refer to Figures 1 to 7 In an embodiment of the present application, the end of the mounting cylinder 301 close to the sliding block 502 is provided with an opening 303, and the top rod 304 is detachably connected to the mounting cylinder 301 through the opening 303. In use, the top rod 304 is inserted into the interior of the opening 303 to conveniently and reliably push the sliding block 502 to move, so that the first through hole 503 and the second through hole 504 can be more quickly overlapped together to facilitate the cable 103 to pass through the first through hole 503 and the second through hole 504.

[0046] Please refer to Figures 1 to 7 In an embodiment of the present application, the top rod 304 is fixedly connected with a limiting ring 305, and the distance between the end face of the limiting ring 305 and the end face of the top rod 304 is configured to be able to push the sliding block 502 and make the first through hole 503 and the second through hole 504 overlap. In the use process, the distance of the top rod 304 entering the interior of the opening 303 can be more accurately controlled by the limiting ring 305, so that the first through hole 503 and the second through hole 504 can be more accurately and reliably overlapped together.

[0047] Please refer to Figures 1 to 7 In an embodiment of the present application, the top rod 304 is provided in a Z-shaped manner, the end of the top rod 304 away from the limiting ring 305 is provided with a first driving rod 306, and the driving face 307 is formed in the interior of the opening 303 corresponding to the first driving rod 306. In the use process, the first driving rod 306 can drive the driving face 307 to drive the mounting cylinder 301 to rotate, and the top rod 304 provided in a Z-shaped manner can be directly used as a rocker, so that the mounting cylinder 301 can be directly driven to rotate by hand.

[0048] Please refer to Figures 1 to 7In one embodiment of the present application, the baffle 203 is provided with a locking assembly 600 corresponding to the mounting cylinder 301, the locking assembly 600 comprises a locking rod 601, the baffle 203 is provided with a threaded hole 602, one end of the locking rod 601 is fixedly connected with a screw rod 603, the threaded hole 602 is screwed with the screw rod 603, one end of the screw rod 603 away from the locking rod 601 is fixedly connected with a second driving rod 604, the locking rod 601 is coaxially arranged with the screw rod 603, and the second driving rod 604 is perpendicularly arranged with the screw rod 603.

[0049] In use, the locking assembly 600 can be used to lock the mounting cylinder 301 after the initial position of the cable 103 is adjusted, the second driving rod 604 can conveniently drive the screw rod 603 to rotate, the screw rod 603 will move axially under the action of the threaded hole 602 in the process of rotating, the screw rod 603 will drive the locking rod 601 to move axially when moving axially, and the locking rod 601 will be tightly pressed on the outside of the mounting cylinder 301 when the locking rod 601 is controlled to move towards the mounting cylinder 301, so as to prevent the mounting cylinder 301 from rotating in the reverse direction by the cable 103, and ensure that the initial position of the cable 103 is stable and reliable.

[0050] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A lifting mechanism for a gantry crane, characterized in that: The system includes a mounting base (101), and the top of each of the two tower column assembly frames (700) is equipped with the mounting base (101). A pulley (102) is rotatably connected to the mounting base (101). A cable (103) is connected to each of the crossarm assembly frames (800) corresponding to the mounting base (101). The outer side of the cable (103) is slidably connected to the pulley (102). The ends of the two cables (103) away from the crossarm assembly frame (800) are connected to the same winding device (200).

2. The lifting mechanism for a bridging frame according to claim 1, characterized in that: The winding device (200) includes a frame (201), a winding shaft (202) is rotatably connected to the frame (201), symmetrically arranged baffles (203) are fixedly connected to the winding shaft (202), a winding drum (204) is fixedly connected between the baffles (203), cable fixing assemblies (300) are symmetrically arranged on the winding drum (204), and a drive assembly (400) is installed on the frame (201), the drive assembly (400) is drivenly connected to the winding shaft (202).

3. The lifting mechanism for a bridging frame according to claim 2, characterized in that: The cable fixing assembly (300) includes a mounting cylinder (301), which is rotatably mounted on the baffle (203) at a position inside the winding drum (204). The winding drum (204) has a mounting groove (302) corresponding to the cable (103), and the inside of the mounting cylinder (301) is provided with a locking element (500) corresponding to the cable (103).

4. The lifting mechanism of the gantry according to claim 3, characterized in that: The locking component (500) includes a spring (501) and a slider (502). The spring (501) is fixedly installed inside the mounting cylinder (301), and the slider (502) is slidably connected inside the mounting cylinder (301). The spring (501) and the slider (502) are in abutting connection. The slider (502) has a first through hole (503), and the mounting cylinder (301) has a second through hole (504).

5. The lifting mechanism for a gantry according to claim 4, characterized in that: The mounting cylinder (301) has an opening (303) at one end near the slider (502), and a top rod (304) is detachably connected to the mounting cylinder (301) through the opening (303).

6. The lifting mechanism for a gantry according to claim 5, characterized in that: A limiting ring (305) is fixedly connected to the top rod (304). The distance between the end face of the limiting ring (305) and the end face of the top rod (304) is configured to push the slider (502) and make the first through hole (503) and the second through hole (504) coincide.

7. The lifting mechanism for a bridging frame according to claim 6, characterized in that: The top rod (304) is arranged in a Z-shape. The end of the top rod (304) away from the limiting ring (305) is set as the first driving rod (306). The opening (303) has a driving surface (307) inside corresponding to the first driving rod (306).

8. The lifting mechanism for a bridging frame according to claim 4, characterized in that: A locking assembly (600) is provided on the baffle (203) corresponding to the mounting cylinder (301). The locking assembly (600) includes a locking rod (601). A screw hole (602) is provided on the baffle (203). A screw rod (603) is fixedly connected to one end of the locking rod (601). The screw hole (602) is screwed to the screw rod (603). A second drive rod (604) is fixedly connected to one end of the screw rod (603) away from the locking rod (601). The locking rod (601) and the screw rod (603) are coaxially arranged. The second drive rod (604) is perpendicular to the screw rod (603).

9. The lifting mechanism of a bridging frame according to claim 2, characterized in that: The drive assembly (400) includes a motor (401), and a reducer (402) is drivenly connected to the output shaft of the motor (401). The output shaft of the reducer (402) is drivenly connected to the take-up shaft (202). The motor (401) and the reducer (402) are both fixedly mounted on the frame (201).

10. The lifting mechanism of a gantry according to claim 9, characterized in that: A drive sprocket (403) is fixedly connected to the output shaft of the reducer (402), and a driven sprocket (404) is fixedly connected to the take-up shaft (202). A chain (405) is connected between the drive sprocket (403) and the driven sprocket (404).

Images