Building surveying pay-off device capable of being folded and stored

Abstract

The utility model relates to the technical field of building surveying, in particular to a building surveying pay-off device capable of being folded and stored, which comprises a first sleeve rod, a mounting seat, a screw rod, a knob, a first telescopic rod, a second sleeve rod, a second telescopic rod and the like, the left side and the right side of the lower portion of the first sleeve rod are fixedly connected with mounting seats respectively, the mounting seats are provided with rotating shafts, the rotating shafts penetrate through the side wall of the second sleeve rod so that the second sleeve rod can be rotatably connected to the mounting seats, the mounting seats are provided with threaded holes, screws are screwed into the threaded holes, the inner ends of the screws abut against the inner side wall of the second sleeve rod, and the outer ends of the two screws are fixedly connected with rotary knobs. The rotary knob is located on the outer side of the second sleeve rod, and the first telescopic rod and the second telescopic rod are each of a U-shaped structure. By means of the nesting structure that the first telescopic rod can be inserted into the second telescopic rod, height adjustment and folding and unfolding of the main rod and the supporting legs are achieved, and the effects of being convenient to fold, store and carry are achieved.

Description

Technical Field

[0001] This utility model relates to the field of building surveying technology, and in particular to a foldable and retractable building surveying and setting-out device. Background Technology

[0002] Building surveying and setting out is a crucial step in construction engineering, primarily used to determine the building's planar position, elevation benchmarks, and axis alignment to ensure construction accuracy matches design requirements. In practice, surveying and setting out devices serve as important auxiliary positioning tools, widely used in scenarios such as wall positioning, ground leveling, and pipeline laying. The building surveying and setting out device described in this utility model is an adjustable support structure used to support and fix the setting-out benchmark. It is typically used in conjunction with ink lines, laser lines, or thin steel wires, and requires good stability, adjustable height and span, and easy portability to adapt to complex and changing construction site environments.

[0003] Currently, most existing construction surveying and setting-out devices adopt fixed or simple telescopic structures. Although they can achieve basic support functions, they still have many shortcomings in practical applications. Some devices do not have folding functions, are large in size, and are inconvenient to store, which is not conducive to the needs of long-distance transportation and frequent relocation in construction. Other products, although they have a certain degree of adjustment, lack effective locking and limiting mechanisms, which can easily lead to slippage or loosening during use, affecting the accuracy of setting-out and operational safety.

[0004] Therefore, it is necessary to design a foldable and retractable building surveying and layout device to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of existing building surveying and setting-out devices, such as inconvenience in storage and poor structural stability, this utility model provides a foldable and storable building surveying and setting-out device.

[0006] The technical solution of this utility model is as follows: a foldable and retractable building surveying and setting-out device, comprising a first sleeve rod, a mounting base, a screw rod, a knob, a first telescopic rod, a second sleeve rod, a second telescopic rod, a limiting block, and a limiting rod. The first sleeve rod has an inverted U-shaped structure, with its left and right arms slidably connected to the left and right arms of the first telescopic rod. The mounting base is fixedly connected to the left and right sides of the lower part of the first sleeve rod, and the mounting base is provided with a rotating shaft. The rotating shaft passes through the side wall of the second sleeve rod, allowing the second sleeve rod to be rotatably connected to the mounting base. The mounting base is provided with a threaded hole, into which the screw rod is screwed, with its inner end abutting against the inner side wall of the second sleeve rod. The outer ends of the two screw rods... All are fixedly connected to knobs, which are located on the outside of the second set of rods. Both the first and second telescopic rods are U-shaped. The left and right arms of the second telescopic rod are slidably connected to the inside of the two second sets of rods. The outer diameter of the second telescopic rod is larger than that of the first telescopic rod, and the two can slide and nest. Limiting blocks are fixedly connected to the left and right sides of the lower front side, the upper rear side, the front side of the first telescopic rod, and the left and right sides of the rear side of the second telescopic rod. The limiting blocks are in the form of a three-quarter circular ring structure with an opening at one end. A limiting rod is provided between each pair of left and right limiting blocks. The middle of the limiting rod is higher than the sides, forming a bridge-shaped structure.

[0007] In one embodiment, a top block is also included, with the top block slidably connected to both the upper inner side of the front of the first telescopic rod and the upper inner side of the rear of the second telescopic rod.

[0008] In one embodiment, springs are also included, with springs connecting the top block to the first telescopic rod and the top block to the second telescopic rod, respectively.

[0009] In one embodiment, multiple through holes adapted to the top block are opened at intervals along the length direction on both the front side of the first sleeve rod and the rear side of the second sleeve rod.

[0010] In one embodiment, a sponge sleeve is also included, with the upper periphery of the first sleeve rod covered by the sponge sleeve.

[0011] In one embodiment, anti-slip rubber rings are also included, with multiple anti-slip rubber rings provided on the lower periphery of both the first and second telescopic rods.

[0012] Beneficial effects: 1. This utility model achieves height adjustment and folding and unfolding of the main rod and the support leg through the sliding cooperation between the first set of rods and the first telescopic rod, the second set of rods and the second telescopic rod, and the rotational connection between the second set of rods and the mounting base. With the nesting structure that allows the first telescopic rod to be inserted into the second telescopic rod, it achieves the effect of easy folding, storage and carrying.

[0013] 2. This utility model achieves effective locking of the outrigger extension angle by setting a locking structure of screw and knob between the second rod and the mounting base; at the same time, combined with the spring-loaded locking mechanism of the top block, spring and through hole, and the snap-fit ​​cooperation of the limiting block and bridge-shaped limiting rod, it achieves the effect of enhancing the overall structural stability and connection reliability, effectively preventing loosening, slippage or accidental folding during use.

[0014] 3. This utility model improves grip comfort by setting a sponge sleeve on the upper part of the first telescopic rod; and increases friction with the ground by setting multiple anti-slip rubber rings on the lower periphery of the first telescopic rod and the second telescopic rod, thereby improving operating comfort, anti-slip performance and work safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a structural diagram of the first set of rods, the first telescopic rod, and the second set of rods of this utility model.

[0017] Figure 3 This is a structural diagram of the limiting block, spring, and top block of this utility model.

[0018] Figure 4 This is a structural diagram of the second telescopic rod, sponge sleeve, and anti-slip rubber ring of this utility model.

[0019] The markings in the diagram are as follows: 1-First sleeve rod, 2-First telescopic rod, 3-Second sleeve rod, 4-Second telescopic rod, 5-Limiting block, 6-Limiting rod, 7-Spring, 8-Top block, 9-Through hole, 10-Sponge sleeve, 11-Anti-slip rubber ring, 12-Mounting base, 13-Screw, 14-Knob. Detailed Implementation

[0020] Example: A foldable and retractable building surveying and setting-out device, such as... Figures 1-4As shown, the device includes a first sleeve rod 1, a mounting base 12, a screw rod 13, a knob 14, a first telescopic rod 2, a second sleeve rod 3, a second telescopic rod 4, a limiting block 5, and a limiting rod 6. The first sleeve rod 1 has an inverted U-shaped structure, with sliding grooves inside its left and right arms. The left and right arms of the first telescopic rod 2 are slidably connected to the first sleeve rod 1 through the sliding grooves. The mounting base 12 is welded to the lower left and right sides of the first sleeve rod 1. The mounting base 12 has a rotating shaft that passes through the side wall of the second sleeve rod 3, allowing the second sleeve rod 3 to be rotatably connected to the mounting base 12. The mounting base 12 has a threaded hole into which the screw rod 13 is screwed, with its inner end abutting against the inner side wall of the second sleeve rod 3 to adjust and lock the rotation angle. The outer ends of both screw rods 13 are integrally connected to a knob. Button 14, and knob 14 is located outside the second set of rods 3. The first telescopic rod 2 and the second telescopic rod 4 are both U-shaped structures. The left and right arms of the second telescopic rod 4 are slidably fitted inside the two second set of rods 3. The outer diameter of the second telescopic rod 4 is larger than the outer diameter of the first telescopic rod 2. The two can slide and nest together to achieve folding and storage. The left and right sides of the lower front side and upper rear side of the first set of rods 1, the front side of the first telescopic rod 2, and the left and right sides of the rear side of the second telescopic rod 4 are respectively connected to the limiting blocks 5 by welding. The limiting blocks 5 are in the form of a three-quarter circular ring structure with an opening at one end. A limiting rod 6 is provided between each pair of left and right limiting blocks 5. The middle part of the limiting rod 6 is higher than the two sides, forming a bridge-shaped structure. The two ends of the limiting rod 6 are respectively embedded in the ring structure of the left and right limiting blocks 5.

[0021] like Figures 1-4 As shown, it also includes a top block 8, a spring 7, a sponge sleeve 10, and an anti-slip rubber ring 11. The upper inner side of the front side of the first telescopic rod 2 and the upper inner side of the rear side of the second telescopic rod 4 are provided with guide holes. The top block 8 is slidably connected in the guide hole. Springs 7 are connected between the top block 8 and the first telescopic rod 2 and between the top block 8 and the second telescopic rod 4, respectively. Multiple through holes 9 are opened at intervals along the length direction on the front side of the first sleeve rod 1 and the rear side of the second sleeve rod 3. The top block 8 can pop out under the action of the spring 7 and be embedded in the corresponding through hole 9 to achieve height locking. The upper outer periphery of the first sleeve rod 1 is covered with a sponge sleeve 10, and the lower outer periphery of the first telescopic rod 2 and the second telescopic rod 4 are provided with multiple anti-slip rubber rings 11.

[0022] When in use, unfold the device from its folded state. First, pull down the first telescopic rod 2 so that it slides inside the left and right arms of the first sleeve rod 1 to adjust the height of the main support; at the same time, pull down the second telescopic rod 4 so that its left and right arms slide inside the two second sleeve rods 3 respectively to adjust the height of the left and right outriggers to adapt to different working height requirements and improve support stability.

[0023] During the deployment process, the second sleeve rod 3 rotates around the first sleeve rod 1 via the pivot on the mounting base 12 until it reaches a horizontal position or the required deployment angle. Once the outriggers are fully deployed, the knobs 14 on both sides are rotated to drive the screw 13 into the threaded hole of the mounting base 12. The inner end of the screw 13 gradually presses against the inner wall of the second sleeve rod 3, thereby locking the rotation angle and preventing the outriggers from retracting due to vibration or external force during use, thus ensuring structural stability.

[0024] Then adjust the height of the device and slide it to a suitable position. Press down the top blocks 8 on both sides of the first telescopic rod 2 and the second telescopic rod 4 respectively, and slide the first telescopic rod 2 and the second telescopic rod 4 down to a suitable position. The top blocks 8 pop out from the inside of the first telescopic rod 2 and the second telescopic rod 4 under the elastic force of the spring 7 and are embedded in the corresponding through holes 9 of the first sleeve rod 1 and the second sleeve rod 3 to realize the positioning and locking of the telescopic structure and prevent accidental retraction during use.

[0025] The limiting blocks 5 are fixed at designated positions on the first set of rods 1, the first telescopic rod 2, and the second telescopic rod 4, respectively. A limiting rod 6 is inserted between each pair of left and right limiting blocks 5. When in use, the limiting rod 6 must first be pulled out from the open end of the limiting block 5 to install the wire-laying tool. After installation, the limiting rod 6 is reinserted into the open end of the limiting block 5, ensuring that the limiting rod 6 is correctly positioned. The bridge-shaped structure design of the middle of the limiting rod 6, which is higher than the two sides, causes the two ends to be axially limited by the central protrusion after being inserted into the opening of the limiting block 5, preventing the limiting rod from slipping axially under vibration or external force. The three-quarters circular structure of the limiting block 5 provides radial constraint to the limiting rod, ensuring its stable support for the wire-laying tool. In addition, the cooperation between the limiting rod 6 and the limiting block 5 can effectively limit the relative rotation between the rods, further enhancing the overall structural rigidity of the device.

[0026] During operation, the operator holds the sponge sleeve 10 on the upper part of the first telescopic rod 1 to improve grip comfort and shock absorption; multiple anti-slip rubber rings 11 set on the lower periphery of the first telescopic rod 2 and the second telescopic rod 4 can increase the friction with the ground or support surface and prevent slippage.

[0027] After use, rotate the knob 14 in the opposite direction to disengage the screw 13 and release the lock on the second sleeve rod 3; press the top block 8 to disengage it from the through hole 9, retract the first telescopic rod 2 and the second telescopic rod 4, and rotate the second sleeve rod 3 inward to close it up, so that the first sleeve rod 1 and the second telescopic rod 4 slide and nest together and fold. The limiting rod 6 can be pulled out from the limiting block 5 or retained, making it easy to store and carry as a whole.

[0028] This device achieves efficient and stable operation of measurement and layout work through the synergistic effect of multi-stage telescopic, rotational folding and multiple limiting structures, and has good portability.

Claims

1. A foldable and retractable building surveying and setting-out device, characterized in that: The system includes a first sleeve rod (1), a mounting base (12), a screw (13), a knob (14), a first telescopic rod (2), a second sleeve rod (3), a second telescopic rod (4), a limiting block (5), and a limiting rod (6). The first sleeve rod (1) has an inverted U-shaped structure, and its left and right arms are slidably connected to the left and right arms of the first telescopic rod (2). The mounting base (12) is fixedly connected to the left and right sides of the lower part of the first sleeve rod (1). The mounting base (12) is provided with a rotating shaft, which passes through the side wall of the second sleeve rod (3), so that the second sleeve rod (3) can be rotatably connected to the mounting base (12). The mounting base (12) is provided with a threaded hole, and the screw (13) is screwed into the threaded hole. Its inner end abuts against the inner side wall of the second sleeve rod (3). The outer ends of the two screws (13) are fixedly connected. A knob (14) is located outside the second sleeve rod (3). The first telescopic rod (2) and the second telescopic rod (4) are both U-shaped. The left and right arms of the second telescopic rod (4) are slidably connected to the inside of the two second sleeve rods (3). The outer diameter of the second telescopic rod (4) is larger than the outer diameter of the first telescopic rod (2). The two can be slidably nested. The left and right sides of the lower front side and the upper rear side of the first sleeve rod (1), the front side of the first telescopic rod (2) and the left and right sides of the rear side of the second telescopic rod (4) are respectively fixedly connected to limit blocks (5). The limit block (5) is a three-quarters circular ring structure with an opening at one end. A limit rod (6) is provided between each pair of left and right limit blocks (5). The middle part of the limit rod (6) is higher than the sides, forming a bridge-shaped structure.

2. The foldable and retractable building surveying and setting-out device as described in claim 1, characterized in that: It also includes a top block (8), and the top block (8) is slidably connected to the upper inner side of the front side of the first telescopic rod (2) and the upper inner side of the rear side of the second telescopic rod (4).

3. The foldable and retractable building surveying and setting-out device as described in claim 2, characterized in that: It also includes a spring (7), and springs (7) are connected between the top block (8) and the first telescopic rod (2) and between the top block (8) and the second telescopic rod (4).

4. The foldable and retractable building surveying and setting-out device as described in claim 3, characterized in that: Multiple through holes (9) that are compatible with the top block (8) are opened at intervals along the length direction on the front side of the first sleeve rod (1) and the rear side of the second sleeve rod (3).

5. The foldable and retractable building surveying and setting-out device as described in claim 4, characterized in that: It also includes a sponge sleeve (10), with the upper outer periphery of the first sleeve rod (1) covered with a sponge sleeve (10).

6. The foldable and retractable building surveying and setting-out device as described in claim 5, characterized in that: It also includes anti-slip rubber rings (11), and multiple anti-slip rubber rings (11) are provided on the lower periphery of the first telescopic rod (2) and the second telescopic rod (4).

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