Pay-off device for construction site

Abstract

The utility model provides a pay-off device for a construction site. The construction site pay-off device comprises a frame, the frame comprises two longitudinal beams, a fixed cross beam and a movable cross beam, the fixed cross beam is welded and fixed between the two longitudinal beams, and the movable cross beam is detachably installed between the two longitudinal beams; limiting sliding rails are fixedly mounted at the tops of the two longitudinal beams correspondingly, shaft supports are arranged above the limiting sliding rails, rotatable supporting arms are rotationally mounted at the two corners of the bottom of each shaft support correspondingly, first shaft seats are fixedly mounted at the two ends of each limiting sliding rail correspondingly, and the same two-way lead screw is rotationally mounted on the two first shaft seats; two sliding blocks are installed on the limiting sliding rail in a sliding mode, and the two-way lead screw penetrates through the two sliding blocks. The pay-off device on the construction site has the advantages of being flexible and convenient to use and high in applicability.

Description

Technical Field

[0001] This utility model relates to the field of power construction equipment technology, and in particular to a construction site line-laying device. Background Technology

[0002] During power engineering construction, cable laying frames are used to release power cables from cable reels. When in use, the cable laying frame supports the cable reel with the cable wound on it, so that the cable reel can rotate automatically when the cable is pulled, which improves the convenience of releasing the power cables.

[0003] When using existing cable reeling frames on construction sites, the cable reel is usually positioned manually or with lifting equipment first. Then, two cable reeling frames are placed on either side of the cable reel. The lifting mechanisms on the two cable reeling frames then work together to lift the central axis of the cable reel off the ground. During use, the cable reel cannot be moved using the cable reeling frames, nor can the direction of cable laying be adjusted, making it inconvenient and inflexible to use.

[0004] Therefore, it is necessary to provide a new construction site layout device to solve the above-mentioned technical problems. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a construction site layout device that is flexible, convenient to use, and highly applicable.

[0006] To solve the above-mentioned technical problems, the construction site layout device provided by this utility model includes: a frame, the frame including two longitudinal beams, a fixed crossbeam and a movable crossbeam, the fixed crossbeam being welded and fixed between the two longitudinal beams, and the movable crossbeam being detachably installed between the two longitudinal beams;

[0007] Both longitudinal beams are fixedly mounted with limit slide rails at their tops. A shaft support is provided above the limit slide rail. Rotatable support arms are rotatably mounted at the bottom two corners of the shaft support. Both ends of the limit slide rail are fixedly mounted with first shaft seats. The same bidirectional lead screw is rotatably mounted on the two first shaft seats. Two sliding blocks are slidably mounted on the limit slide rail. The bidirectional lead screw passes through the two sliding blocks and is threadedly connected to the two sliding blocks. The bottom ends of the two rotatable support arms are rotatably connected to the two sliding blocks respectively. A drive shaft is rotatably mounted on the top of the fixed crossbeam. The drive shaft is drivingly connected to both bidirectional lead screws.

[0008] Preferably, the shaft support has a V-shaped opening, and multiple rotating rollers are rotatably mounted on the inner wall of the V-shaped opening.

[0009] Preferably, two first bevel gears are fixedly sleeved on the drive shaft, and two second bevel gears are fixedly installed at the ends of the two bidirectional lead screws near the drive shaft, with the two first bevel gears meshing with the two second bevel gears respectively.

[0010] Preferably, both ends of the drive shaft are welded with hexagonal heads, and each of the two hexagonal heads has an internal hexagonal groove.

[0011] Preferably, a fixing lug is fixedly installed on the outer wall of each of the two longitudinal beams on the side away from each other, and an adjusting screw is threaded through and installed on the fixing lug, with a contact block rotatably sleeved at the bottom end of the adjusting screw.

[0012] Preferably, a connecting block is fixedly installed on the outer wall of each of the two longitudinal beams that are close to each other. The connecting block has a locking socket. Both ends of the movable crossbeam have mating interfaces that are adapted to the connecting blocks. The two connecting blocks are located in the two mating interfaces respectively. The movable crossbeam has a clearance socket near both ends. The two clearance sockets are connected to the two mating interfaces respectively. A plug is slidably installed through each of the two clearance sockets. The two plugs pass through the corresponding locking sockets and are slidably connected to the inner wall of the corresponding locking sockets.

[0013] Preferably, a positioning baffle is welded to the outer wall of the connecting block near the fixed crossbeam.

[0014] Compared with related technologies, the construction site layout device provided by this utility model has the following advantages:

[0015] This utility model provides a construction site line-laying device. Through the arrangement of components such as a frame, two limiting slide rails, four sliding blocks, four rotatable support arms, two shaft supports, multiple rotating rollers, two bidirectional lead screws, and a drive shaft, the movable crossbeam on the frame can be easily removed, creating an opening on the front of the frame. The line-laying reel can enter the frame through this opening. Then, by cranking the drive shaft with a tool, the two shaft supports can be raised, thereby lifting the line-laying reel and its central shaft. Users can lay lines on-site at the reel's location or move the reel to a more suitable position by pushing the device. It is flexible and convenient to use. The shaft supports have V-shaped openings, with multiple rotating rollers rotatably mounted on the two inner walls of the V-shaped openings. Within a certain range, it can rotatably support the central shaft of line-laying reels of different diameters, offering strong applicability. Attached Figure Description

[0016] Figure 1 A schematic diagram of a preferred embodiment of the construction site layout device provided by this utility model;

[0017] Figure 2 for Figure 1 The diagram shows the structure with the movable crossbeam and the two longitudinal beams separated.

[0018] Figure 3 for Figure 1 The diagram shows the assembly of the two bidirectional lead screws with the drive shaft.

[0019] Figure 4 for Figure 1 The diagram shows the structure of the shaft support.

[0020] The following are the labels in the diagram: 1. Longitudinal beam; 2. Fixed crossbeam; 3. Movable crossbeam; 4. Limiting slide rail; 5. Sliding block; 6. Rotatable support arm; 7. Shaft support; 8. Rotating roller; 9. First shaft seat; 10. Bidirectional lead screw; 11. Drive shaft; 12. First bevel gear; 13. Second bevel gear; 14. Connecting block; 15. Insert block. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Please refer to the following: Figures 1-4 ,in, Figure 1 A schematic diagram of a preferred embodiment of the construction site layout device provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure with the movable crossbeam and the two longitudinal beams separated. Figure 3 for Figure 1 The diagram shows the assembly of the two bidirectional lead screws with the drive shaft. Figure 4 for Figure 1 The diagram shows the structure of the axle support. The construction site line-laying device includes: a frame, which includes two longitudinal beams 1, a fixed crossbeam 2, and a movable crossbeam 3. The fixed crossbeam 2 is welded and fixed between the two longitudinal beams 1. The movable crossbeam 3 is detachably installed between the two longitudinal beams 1. After the movable crossbeam 3 is removed, there is an opening on the front side of the frame, which allows the line-laying reel to enter between the two longitudinal beams 1. Multiple wheels are fixedly installed at the bottom of each of the two longitudinal beams 1. Fixed frames are fixedly installed on the outer walls of the two longitudinal beams 1 on the sides away from each other. A handrail is fixedly installed between the two fixed frames.

[0023] Both longitudinal beams 1 are fixedly mounted with limit rails 4 at their tops. A shaft support 7 is positioned above the limit rail 4, and a rotatable support arm 6 is rotatably mounted at each of the two bottom corners of the shaft support 7. Both rotatable support arms 6 are inclined. First shaft seats 9 are fixedly mounted at both ends of the limit rail 4. The same bidirectional lead screw 10 is rotatably mounted on the two first shaft seats 9. The outer wall of the bidirectional lead screw 10 has two external threads with opposite directions. Two sliding blocks 5 are slidably mounted on the limit rail 4. The bidirectional lead screw 10 passes through the two sliding blocks 5 and is threadedly connected to the two sliding blocks 5 through the two external threads with opposite directions. During forward rotation, the bidirectional lead screw 10 can drive the two sliding blocks 5 to move in opposite directions. The two sliding blocks 5 can move in opposite directions, and the bottom ends of the two rotatable support arms 6 are rotatably connected to the two sliding blocks 5 respectively. During the process of the two sliding blocks 5 moving towards each other, the shaft support 7 is pushed upward by the two rotatable support arms 6. Two second shaft seats are fixedly installed on the top of the fixed crossbeam 2. The same drive shaft 11 is rotatably installed on the two second shaft seats. The drive shaft 11 is connected to the two double-acting screws 10. Specifically, two first bevel gears 12 are fixedly sleeved on the drive shaft 11. Two second bevel gears 13 are fixedly installed on the end of the two double-acting screws 10 near the drive shaft 11. The two first bevel gears 12 mesh with the two second bevel gears 13 respectively.

[0024] In this embodiment, in order to support the central shaft of the wire feeding reel with different diameters within a certain range, a V-shaped opening is provided on the shaft support 7, and multiple rotating rollers 8 are rotatably installed on the inner wall of the V-shaped opening. Rolling friction occurs between the rotating rollers 8 and the central shaft of the wire feeding reel, resulting in low resistance.

[0025] In this embodiment, in order to facilitate the user to rotate the drive shaft 11 with tools, both ends of the drive shaft 11 are welded with hexagonal heads. The hexagonal heads can be locked with a wrench for rotation. Both hexagonal heads are provided with internal hexagonal grooves. Even without a wrench, rotation can be performed using an internal hexagonal wrench.

[0026] In this embodiment, in order to prevent the device from moving randomly during the laying process, fixing ears are fixedly installed on the outer walls of the two longitudinal beams 1 on the opposite sides. An adjusting screw is threaded through and installed on the fixing ear. The bottom end of the adjusting screw is fitted with an abutment block. By rotating the adjusting screw clockwise, the abutment block can be made to make close contact with the ground, increasing the resistance that the device needs to overcome when moving.

[0027] In this embodiment, in order to quickly disassemble or install the movable crossbeam 3, connecting blocks 14 are fixedly installed on the outer walls of the two longitudinal beams 1 that are close to each other. The connecting blocks 14 are provided with locking sockets. At both ends of the movable crossbeam 3, there are mating interfaces that are compatible with the connecting blocks 14. The two connecting blocks 14 are located in the two mating interfaces respectively. At both ends of the movable crossbeam 3, there are clearance sockets. The clearance sockets are the same size as the locking sockets. The two clearance sockets are connected to the two mating interfaces respectively. Insert blocks 15 are slidably installed through the two clearance sockets. The two insert blocks 15 are slidably connected to the inner walls of the corresponding locking sockets. A limit plate is fixedly installed on the top of the insert block 15. A handle is welded to the top of the limit plate. The bottom surface of the insert block 15 is designed with rounded corners at the connection with the four adjacent outer walls to facilitate its smooth insertion into the clearance sockets and locking sockets.

[0028] In this embodiment, in order to locate the installation position of the movable crossbeam 3, a positioning baffle is welded on the outer wall of the connecting block 14 near the fixed crossbeam 2. When the movable crossbeam 3 is fitted onto the two connecting blocks 14, the avoidance socket is axially aligned with the locking socket when the movable crossbeam 3 is in contact with both positioning baffles.

[0029] The working principle of the construction site layout device provided by this utility model is as follows:

[0030] When using it, first push the cable reel next to the cable reel, then pull out the two plugs 15 upwards respectively, and then pull the movable crossbeam 3 forward to remove it. This will create an opening on the front of the frame. Then push the frame to let the cable reel enter between the two longitudinal beams 1. When the central shaft on the cable reel is directly above the two axle supports 7, stop pushing the frame. Then put the movable crossbeam 3 back onto the two connecting blocks 14, and then reinsert the two plugs 15 to lock the movable crossbeam 3.

[0031] After completing the above operations, the drive shaft 11 is cranked by the handle or Allen wrench, which drives the two double-acting screws 10 to rotate in the forward direction at the same time. During the forward rotation of the double-acting screws 10, the two sliding blocks 5 can be pushed to move towards each other through the two external threads with opposite directions. During the movement of the two sliding blocks 5, the two rotatable support arms 6 will rotate, which will increase the angle between the two rotatable support arms 6 and the longitudinal beam 1. Under the push of the two rotatable support arms 6, the shaft support 7 will gradually rise. As the shaft support 7 rises, the central shaft of the wire feeding reel will enter the V-shaped opening on the two shaft support 7. Then, the wire feeding reel will be lifted off the ground by the lifting of the shaft support 7. After that, the device can be pushed to the wire feeding destination, and the direction of wire feeding can be adjusted very easily.

[0032] Before laying the wire, rotate the four adjusting screws clockwise in sequence to make the four contact blocks fit tightly against the ground. This will prevent the device from shifting during the wire laying process.

[0033] Compared with related technologies, the construction site layout device provided by this utility model has the following advantages:

[0034] This utility model provides a construction site line-laying device. Through the arrangement of components such as a frame, two limiting slide rails 4, four sliding blocks 5, four rotatable support arms 6, two shaft supports 7, multiple rotating rollers 8, two bidirectional lead screws 10, and a drive shaft 11, the movable crossbeam 3 on the frame can be easily removed, creating an opening on the front of the frame. The line-laying reel can enter the frame through this opening. Then, by using a tool to crank the drive shaft 11, the two shaft supports 7 can be raised, thereby lifting the line-laying reel and its central shaft. Users can lay lines on-site at the reel's location or move the reel to a more suitable position by pushing the device. It is flexible and convenient to use. The shaft supports 7 have V-shaped openings, and the multiple rotating rollers 8 are rotatably mounted on the two inner walls of the V-shaped openings. Within a certain range, this allows for the rotational support of the central shaft of line-laying reels of different diameters, offering strong applicability.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A construction site pay-off comprising a carriage, characterised in that, The frame comprises two longitudinal beams (1), a fixed cross beam (2) and a movable cross beam (3), the fixed cross beam (2) is welded and fixed between the two longitudinal beams (1), and the movable cross beam (3) is detachably mounted between the two longitudinal beams (1); The top of each of the two longitudinal beams (1) is fixedly provided with a limiting slide rail (4), an axle support (7) is arranged above the limiting slide rail (4), two rotatable support arms (6) are rotatably arranged at the bottom corners of the axle support (7), first axle seats (9) are fixedly arranged at the two ends of the limiting slide rail (4), a same bidirectional screw rod (10) is rotatably arranged on the two first axle seats (9), two sliding blocks (5) are slidably arranged on the limiting slide rail (4), the bidirectional screw rod (10) penetrates through the two sliding blocks (5) and is in threaded connection with the two sliding blocks (5), the bottom ends of the two rotatable support arms (6) are rotatably connected with the two sliding blocks (5), and a driving shaft (11) is rotatably arranged at the top of the fixed cross beam (2) and in transmission connection with the two bidirectional screw rods (10).

2. The construction site layout device of claim 1, wherein, A V-shaped opening is formed in the axle support (7), and a plurality of rotating rollers (8) are rotatably arranged on the inner wall of the V-shaped opening.

3. The construction site layout device of claim 1, wherein, Two first bevel gears (12) are fixedly arranged on the driving shaft (11), second bevel gears (13) are fixedly arranged at the ends of the two bidirectional screw rods (10) close to the driving shaft (11), and the two first bevel gears (12) are in meshing connection with the two second bevel gears (13) respectively.

4. The construction site layout device of claim 3, wherein, Hexagonal heads are welded at the two ends of the driving shaft (11), and an internal hexagonal groove is formed in each of the two hexagonal heads.

5. The construction site layout device of claim 1, wherein, Fixed ears are fixedly arranged on the outer walls of the two longitudinal beams (1) away from each other, adjusting screws are arranged in threaded connection through the fixed ears, and abutting blocks are rotatably arranged at the bottom ends of the adjusting screws.

6. The construction site layout device of claim 1, wherein, Connecting blocks (14) are fixedly arranged on the outer walls of the two longitudinal beams (1) close to each other, locking sockets are formed in the connecting blocks (14), the two ends of the movable cross beam (3) are provided with butt joints matched with the connecting blocks (14), the two connecting blocks (14) are arranged in the two butt joints respectively, avoiding sockets are formed in the movable cross beam (3) close to the two ends, the two avoiding sockets are in communication with the two butt joints respectively, and plug blocks (15) are arranged in threaded connection through the two avoiding sockets and in slidable connection with the inner walls of the two avoiding sockets.

7. The construction site layout device of claim 6, wherein, A positioning baffle is welded on the outer wall of the connecting block (14) close to the fixed cross beam (2).

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