A line pulling device for building surveying

Abstract

The application provides a pulling device for building measurement, comprising two symmetrical fixed bases, the two fixed bases are connected by magnetic attraction, the lower end of each fixed base is provided with a cover, the inner middle part of the fixed base is provided with a first cavity, the first cavity is provided with a movable rod, the inside of the cover is provided with a suction cup, the upper end of the movable rod is provided with a handle, the lower end of the movable rod is connected with the suction cup, the fixed base is provided with a second cavity along the inner circumferential part, the second cavity is wound with a flexible traction member, the inner bottom of the second cavity is rotatably connected with a rotating ring, the lower end of the flexible traction member is connected with the rotating ring, the upper end of the flexible traction member penetrates to the outside of the upper shell along the horizontal direction, and the upper ends of the flexible traction members of the two fixed bases are connected with each other. The application is simple in dismounting operation, guarantees the integrity of the ceramic tile, and is suitable for various different construction environments.

Description

Technical Field

[0001] This invention relates to the field of building surveying technology, specifically a string-pull device for building surveying. Background Technology

[0002] Construction surveying equipment is a type of engineering equipment used to measure various benchmarks such as horizontality and verticality. Many devices are needed in construction surveying, and string lines are one of them. Most existing string lines are anchored to walls or floors using fixed rods. This method of fixing can damage the building surface at the fixing point and is only suitable for unfinished houses or unfinished buildings. However, string lines are sometimes used to check the verticality of tile grout lines on walls. In this case, existing devices cannot be properly fixed and achieve the desired detection effect. Forcing them to be fixed can cause serious damage to the tiles. Although levels can use lasers to check the verticality of tile grout lines, the conditions and terrain at construction sites are varied, and levels are not suitable for all sites, lacking flexibility. Summary of the Invention

[0003] In view of the above-mentioned prior art, the present invention proposes a string-pulling device for building surveying.

[0004] The present invention provides a wire-pulling device for building surveying, comprising two symmetrically arranged fixing seats, which are magnetically connected to each other, and each fixing seat has a cover at its lower end; The fixed base has a first cavity in the middle, and a movable rod is provided in the first cavity. A suction cup is provided inside the cover. The upper end of the movable rod extends vertically to the outside of the upper shell, and the lower end of the movable rod extends vertically to the inside of the cover. The movable rod can slide up and down along the fixed base. The upper end of the movable rod is provided with a handle, and the lower end of the movable rod is connected to the suction cup. A fixed stop is fixedly connected to one side of the movable rod in the first cavity. A movable stop is provided above the fixed stop in the first cavity. The movable stop can slide up and down along the first cavity and is elastically connected to the first cavity. A slot is provided on the side of the movable rod near the fixed stop. A locking block is elastically connected in the slot. The locking block can be placed between the fixed stop and the movable stop. The fixed base has a second cavity along its inner circumference, and a flexible traction member is wound inside the second cavity. A rotatable ring is provided at the bottom of the second cavity. The lower end of the flexible traction member is connected to the ring. The upper end of the flexible traction member can extend horizontally to the outside of the upper housing, and the upper ends of the flexible traction members of the two fixed bases are connected to each other.

[0005] Preferably, the fixed base is provided with a first movable hole for the flexible traction member to move left and right, the movable rod is provided with an L-shaped extrusion plate on the side away from the fixed block, and the fixed base is provided with a second movable hole for the L-shaped extrusion plate to move up and down, the top of the second movable hole is connected to the bottom of the first movable hole.

[0006] Preferably, the horizontal part of the L-shaped extrusion plate is connected to the movable rod, and the top of the vertical part of the L-shaped extrusion plate is provided with a rubber pad, and the upper surface of the rubber pad is provided with several grooves.

[0007] Preferably, the fixed base is provided with a T-shaped slide groove for the movable block to slide up and down, and the bottom of the movable block is connected to the inner bottom wall of the T-shaped slide groove by a compression spring.

[0008] Preferably, the end of the card block away from its inclined surface is connected to the inner wall of the card slot via a return spring.

[0009] Preferably, a coil spring is provided between the bottom of the rotating ring and the inner bottom of the second cavity.

[0010] Preferably, the upper ends of the flexible traction components of the two fixed seats are connected by a bubble level.

[0011] Preferably, the flexible traction component is a metal soft rope.

[0012] Preferably, both the card block and the movable stop block have inclined surfaces on their outer sides.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention provides a wire-pulling device for building surveying. By setting a locking block, a fixed stop block, and a movable stop block, the movable rod forms a structure similar to a press-pen. Pulling the handle twice can respectively tighten and fix the suction cup and loosen the suction cup, thereby achieving the effect of quick assembly and disassembly of the device. Furthermore, by pulling the flexible traction component, it can assist the staff in conducting wire-pulling tests, and use a bubble level to confirm the verticality of the tile gaps, ensuring the aesthetics of tile laying. Subsequently, the rotation of the rotating ring and the coil spring can allow the flexible traction component to be quickly retracted into the second cavity.

[0014] 2. This invention is easy to assemble and disassemble, will not damage the wall surface, and ensures the integrity of the tiles. It is suitable for various construction environments.

[0015] 3. The present invention is convenient and quick to store. Staff only need to pull it twice to store the device. The magnet makes the device even more convenient to carry around. Attached Figure Description

[0016] Figure 1This is a structural schematic diagram of an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the internal structure of the fixing base in an embodiment of the present invention.

[0018] Figure 3 This is a partial structural schematic diagram of an embodiment of the present invention.

[0019] Figure 4 This is a cross-sectional schematic diagram of an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the structure of the metal soft rope in an embodiment of the present invention.

[0021] Figure 6 yes Figure 4 Enlarged view of point A in the middle.

[0022] Figure 7 This is a schematic diagram of the structure of the movable rod in an embodiment of the present invention.

[0023] Figure 8 This is a cross-sectional schematic diagram of the fixing base in an embodiment of the present invention.

[0024] In the diagram: 1. Fixed base; 2. Magnet; 3. First cavity; 4. Movable rod; 5. Handle; 6. Cover; 7. Suction cup; 8. Protrusion; 9. Locking block; 10. Fixed stop block; 11. Movable stop block; 12. Slot; 13. Return spring; 14. Metal rope; 15. Second cavity; 16. Rotary ring; 17. Coil spring; 18. L-shaped extrusion plate; 19. Rubber pad; 20. Universal bubble level; 21. T-shaped slider; 22. T-shaped groove; 23. Compression spring; 24. Second movable hole; 25. First movable hole. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations. Example

[0026] A guy wire device for building surveying, such as Figure 1 , 2 As shown, the device includes two symmetrically arranged mounting bases 1, each cylindrical in shape, magnetically connected. Each mounting base 1 has a block-shaped protrusion 8 on its opposite side, and a magnet 2 is installed inside each protrusion 8. The two mounting bases 1 are attracted to each other via the magnets 2, facilitating carrying by staff. A cover 6 is fixed to the lower end of each mounting base 1. The cover 6 is frustoconical, with one sealed end fixedly connected to the lower surface of the mounting base 1, and the open end facing the ground.

[0027] Furthermore, such as Figure 2-4 As shown, the fixed base 1 has a square first cavity 3 in the middle, and a movable rod 4 is provided in the first cavity 3. The cover 6 has a suction cup 7. The inner diameter of the cover 6 is slightly larger than the outer diameter of the suction cup 7. The suction cup 7 can move up and down inside the cover 6. The upper end of the movable rod 4 extends vertically to the outside of the fixed base 1, and the lower end of the movable rod 4 extends vertically to the inside of the cover 6. The movable rod 4 can slide up and down along the fixed base 1. A U-shaped handle 5 is fixed to the upper end of the movable rod 4, and the lower end of the movable rod 4 is fixedly connected to the upper end of the suction cup 7.

[0028] Furthermore, such as Figure 2 , 3 As shown in Figures 7 and 8, a fixed stop block 10 is fixedly connected to one side of the movable rod 4 in the first cavity 3. A movable stop block 11 is provided above the fixed stop block 10 in the first cavity 3. The movable stop block 11 can slide up and down along the first cavity 3 and is elastically connected to the first cavity 3. A T-shaped groove 22 for the movable stop block 11 to slide up and down is provided in the fixed seat 1. The movable rod 4 has a slot 12 on the side near the fixed stop 10. A locking block 9 is elastically connected in the slot 12. Both the locking block 9 and the movable stop 11 have inclined surfaces on their outer sides. The end of the locking block 9 away from its inclined surface is connected to the inner wall of the slot 12 by two return springs 13. A T-shaped slider 21 is fixed on the end of the movable stop 11 away from its inclined surface. The T-shaped slider 21 is slidably connected to the T-shaped slide groove 22. The bottom of the T-shaped slider 21 is connected to the inner bottom wall of the T-shaped slide groove 22 by a compression spring 23. The locking block 9 can be placed between the fixed stop 10 and the movable stop 11.

[0029] Furthermore, such as Figure 2-8 As shown, the fixing base 1 has an annular second cavity 15 along its inner circumference. A flexible traction member is wound inside the second cavity 15. The flexible traction member can be a metal soft rope 14. A rotatable rotating ring 16 is provided at the bottom of the second cavity 15. A coil spring 17 is fixed between the bottom of the rotating ring 16 and the bottom of the second cavity 15. The lower end of the metal soft rope 14 is fixedly connected to the rotating ring 16. The upper end of the metal soft rope 14 can pass through horizontally to the outside of the fixing base 1. The upper ends of the metal soft ropes 14 of the two fixing bases 1 are connected by a bubble level 20.

[0030] Furthermore, such as Figure 2-8 As shown, the fixed base 1 has a first movable hole 25 for the metal rope 14 to move left and right. An L-shaped pressing plate 18 is located at the lower end of the movable rod 4 on the side away from the fixed stop 10. The horizontal part of the L-shaped pressing plate 18 is fixedly connected to the movable rod 4. A rubber pad 19 is located at the top of the vertical part of the L-shaped pressing plate 18, and several grooves are provided on the upper surface of the rubber pad 19. The fixed base 1 also has an L-shaped second movable hole 24 for the L-shaped pressing plate 18 to move up and down. The top of the second movable hole 24 is connected to the bottom of the first movable hole 25.

[0031] The working process and principle of this embodiment are as follows: The operator places the pull wire device on the tile to be measured, and pulls the movable rod 4 by the handle 5. The movable rod 4 rises and causes the suction cup 7 to deform. When the suction cup 7 is attached to the outer wall of the tile, the deformed suction cup 7 will form a negative pressure cavity between itself and the fixed seat 1. Under the action of atmospheric pressure, the fixed seat 1 will be adsorbed on the tile. In this way, the fixed seat 1 can be fixed to the outer wall of the tile without damaging the tile.

[0032] After the lifting of the movable rod 4 stops, the resulting negative pressure chamber exerts a downward force on the suction cup 7, which in turn pulls the movable rod 4 back. As the movable rod 4 rises, the locking block 9 rises in conjunction with it, and its inclined surface contacts the fixed stop 10 and is squeezed into the locking groove 12. When the locking block 9 moves above the stop 10, it is pushed out by the return spring 13 and locked between the fixed stop 10 and the movable stop 11. Thus, the pull-back force generated by the deformed suction cup 7 cannot pull the movable rod 4 down, strengthening the fixing effect of the fixed seat 1.

[0033] After one fixed seat 1 is secured, the worker can pull the other unsecured fixed seat 1 to pull out the metal rope 14. The coil spring 17 will coil and generate rotational force as the metal rope 14 is pulled out of the second cavity 15, making it easy to retract the metal rope 14 into the second cavity 15 when no external force is applied. Moreover, as the movable rod 4 is pulled upward, the L-shaped compression plate 18 fixed on it will also move upward, thereby causing the rubber pad 19 to squeeze the end of the metal rope 14, making it easy for the worker to fix the pulled-out metal rope 14 and prevent the rotational force of the coil spring 17 from pulling the fixed seat 1 off-center. A bubble level 20 is also connected between the ends of the two metal ropes 14, making it easy for the worker to observe the verticality of the tile gap.

[0034] Finally, the operator can pull the movable rod 4 again to retract the locking block 9 into the slot 12 and then pop it out above the movable stop 11. After stopping the pull of the movable rod 4, the movable stop 11 is driven downward by the locking block 9 under the downward pull of the suction cup 7. The compression spring 23 between the T-shaped slider 21 and the T-shaped slider 22 will also tighten. When the bottom surface of the movable stop 11 is in contact with the top surface of the fixed stop 10, the two will work together to push the locking block 9 back into the slot 12. At this time, because the fixed stop 10 and the movable stop 11 are in contact, the locking block 9 will move directly to the bottom, and the pulling force on the suction cup 7 will be released, thereby realizing the quick assembly and disassembly of this device.

[0035] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structures made using the contents of the present invention specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of the present invention.

Claims

1. A string-pull device for building surveying, characterized in that, It includes two symmetrically arranged fixing seats, which are magnetically connected to each other, and each fixing seat has a cover at its lower end; The fixed base has a first cavity in the middle, and a movable rod is provided in the first cavity. A suction cup is provided inside the cover. The upper end of the movable rod extends vertically to the outside of the upper shell of the fixed base, and the lower end of the movable rod extends vertically to the inside of the cover. The movable rod can slide up and down along the fixed base. The upper end of the movable rod is provided with a handle, and the lower end of the movable rod is connected to the suction cup. A fixed stop is fixedly connected to one side of the movable rod in the first cavity. A movable stop is provided above the fixed stop in the first cavity. The movable stop can slide up and down along the first cavity and is elastically connected to the first cavity. A slot is provided on the side of the movable rod near the fixed stop. A locking block is elastically connected in the slot. The locking block can be placed between the fixed stop and the movable stop. The fixed base has a second cavity along its inner circumference. A flexible traction member is wound inside the second cavity. A rotatable ring is provided at the bottom of the second cavity. The lower end of the flexible traction member is connected to the ring. The upper end of the flexible traction member can penetrate horizontally to the outside of the upper shell. The upper ends of the flexible traction members of the two fixed bases are connected to each other. The fixed base is provided with a first movable hole for the flexible traction member to move left and right. The movable rod is provided with an L-shaped extrusion plate on the side away from the fixed block. The fixed base is provided with a second movable hole for the L-shaped extrusion plate to move up and down. The top of the second movable hole is connected to the bottom of the first movable hole. The horizontal part of the L-shaped extrusion plate is connected to the movable rod, and the top of the vertical part of the L-shaped extrusion plate is provided with a rubber pad, and the upper surface of the rubber pad is provided with several grooves. The fixed base is provided with a T-shaped slide groove for the movable block to slide up and down, and the bottom of the movable block is connected to the inner bottom wall of the T-shaped slide groove by a compression spring; The upper ends of the flexible traction components of the two fixed seats are connected by a universal bubble level. The flexible traction component is a soft metal rope; Both the card block and the movable stop block have inclined surfaces on their outer sides.

2. The stringing device for building surveying as described in claim 1, characterized in that, The end of the card block away from its inclined surface is connected to the inner wall of the card slot via a return spring.

3. The stringing device for building surveying as described in claim 1, characterized in that, A coil spring is provided between the bottom of the rotating ring and the inner bottom of the second cavity.

Images