Foldable and retractable measuring rod device

Abstract

This utility model relates to the field of measuring tool technology and discloses a foldable and storeable measuring pole device, including a support base. The top of the support base is threadedly connected to a bottom support tube. The top of the bottom support tube is provided with a measuring pole tube, which is composed of multiple tubes arranged in an equally spaced threaded pattern from bottom to top. This utility model, by incorporating the measuring pole tube and a nighttime measuring indicator light, facilitates day and night marking and measurement. The measuring pole tube, assembled from multiple threaded tubes, is easy to assemble and disassemble. When the bottom support tube and the measuring pole tube are folded and removed, they can be connected together by an anti-drop assembly line, preventing them from falling off or being lost. When disassembling the measuring pole tube, it can be folded and assembled together by multiple snap-fit ​​buckles, preventing it from being lost and making it easy to carry. This makes the device accurate and convenient for measurement, suitable for marking during alternating day and night. It also features a simple structure, easy folding and storage, good overall integrity, and is not easily dropped, making it highly practical.

Description

Technical Field

[0001] This utility model relates to the field of measuring tool technology, and in particular to a foldable and retractable measuring rod device. Background Technology

[0002] A surveying pole is a widely used tool in engineering surveying, topographic mapping, and other fields. It typically consists of a pole and graduated markings, used to indicate the height or distance of a measurement point. During use, the operator must erect the surveying pole vertically at the location to be measured and read the graduated values ​​on the pole using surveying instruments such as a level or total station to obtain the relevant measurement data. When carrying and storing, traditional surveying poles are often of a single, long structure, making them inconvenient to transport and store, often requiring specialized storage bags or transport vehicles.

[0003] Existing measuring poles, due to their considerable length, are inconvenient to carry outdoors. A common approach is to assemble them into a single pole section. However, in practical use, this multi-section assembly results in insufficient load-bearing strength. Furthermore, the multi-section assembly makes them prone to loss or misplacement after disassembly. The overall assembly and folding capabilities are relatively limited, and the folded, integrated design is not ideal, hindering storage convenience. Additionally, the scale markings typically rely solely on natural light reflection for visibility, which is sufficient for daytime measurements. However, at night or in low-light conditions, the clarity of the markings significantly decreases, making it difficult for operators to accurately read data and disrupting measurement operations. This severely impacts measurement efficiency and accuracy, failing to achieve the convenient daytime and nighttime measurement capabilities of existing measuring poles. Therefore, we propose a foldable and retractable measuring pole device to address these issues. Utility Model Content

[0004] In response to the problems raised, this utility model provides a foldable and retractable measuring rod device to solve the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A foldable and retractable measuring rod device includes a support base, the top of which is threadedly connected to a bottom support tube;

[0007] The top of the bottom support tube is provided with a benchmark measuring tube composed of multiple tubes arranged in equal-distance threads from bottom to top. An indicator light mounting platform is fixed to the top of the benchmark measuring tube. A night measurement indicator light is provided on the top of the indicator light mounting platform. A connecting end frame is provided at the bottom of the support base. An anti-falling assembly line is provided between the connecting end frame and the indicator light mounting platform and inserted inside the benchmark measuring tube.

[0008] The measuring tube is fitted with multiple snap-fit ​​folding buckles at equal intervals on its exterior.

[0009] Preferably, an auxiliary measuring lamp is magnetically attached to the top of the outer side of the measuring tube. The auxiliary measuring lamp includes a magnetic mounting ring and an auxiliary measuring lamp head. The magnetic mounting ring is magnetically attached to the rod of the measuring tube and slides along it. The auxiliary measuring lamp head is bolted to the side of the magnetic mounting ring and is a self-powered lamp head.

[0010] Preferably, the bottom support tube is threaded at the center of the support base, the bottom of the bottom support tube extends to the bottom of the support base, the top of the anti-fall assembly line passes through the bottom support tube and the benchmark measuring tube in sequence and is connected to the indicator light mounting platform, and the anti-fall assembly line is one of nylon line, hemp rope line or steel wire.

[0011] Preferably, the measuring tube includes multiple connecting tubes, threaded mounting heads, and threaded mounting slots. The threaded mounting heads and threaded mounting slots are respectively disposed on the upper and lower sides of the connecting tubes. The opposite sides of adjacent threaded mounting heads and threaded mounting slots are threaded together. The adjacent ends of the multiple connecting tubes are assembled into one unit by threaded mounting heads and threaded mounting slots. The bottom connecting tube is threadedly inserted into the top of the bottom supporting tube. The bottom of the indicator light mounting platform is threadedly sleeved onto the top of the top connecting tube. Multiple buckles and folding buckles are correspondingly installed on the multiple connecting tubes.

[0012] Preferably, the bottom of the indicator light mounting platform is provided with a threaded sleeve ring, the bottom of the threaded sleeve ring is threadedly fixed to the top of the measuring tube, the night measurement indicator light is bolted to the top of the indicator light mounting platform, and the night measurement indicator light is a waterproof and self-powered indicator light.

[0013] Preferably, the connecting end frame is U-shaped and fixedly installed at the bottom of the support base, and a hook ring is provided on the inner side of the bottom of the indicator light mounting platform. The two ends of the anti-fall assembly line are respectively wound around the connecting end frame and the hook ring.

[0014] Preferably, the snap-fit ​​folding buckle includes a sliding sleeve ring and a C-shaped locking sleeve. The sliding sleeve ring is sleeved and fixed on the measuring rod tube, and the C-shaped locking sleeve is fixedly installed on the side of the sliding sleeve ring. The inner diameter of the C-shaped locking sleeve matches the outer diameter of the measuring rod tube.

[0015] Preferably, the bottom of the support base is provided with threaded holes arranged in a ring around the bottom support tube, and a support cone is threaded into each of the multiple threaded holes. The two ends of the support cone extend out of the upper and lower sides of the support base, and the bottom of the support cone is conical.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. This foldable and retractable measuring pole device has a bottom support tube threaded onto the top of the support base, which can support and carry multiple assembled measuring pole tubes, facilitating daytime surveying. The top of the measuring pole tube can support an indicator light mounting platform, and a nighttime measuring indicator light is bolted to the top of the indicator light mounting platform, which can be used for illuminated marking, facilitating nighttime measurement. This makes the device accurate and convenient for marking during both day and night, and easy to use.

[0018] 2. This foldable and retractable measuring pole device features a measuring pole tube assembled from multiple threaded tube bodies, facilitating assembly and disassembly. An anti-drop assembly line is installed between the connecting end frame and the indicator light mounting platform, which can be threaded through the supporting measuring pole tube. When the bottom supporting tube and the measuring pole tube are folded and removed, they can be connected together by the anti-drop assembly line, preventing them from falling off or being lost. When disassembling the measuring pole tube, it can be folded and assembled together using multiple snap-fit ​​buckles. The simple structure prevents loss and makes it easy to carry. The device has a simple structure, is easy to fold and store, has good overall integrity, is not easy to fall off, and is highly practical. Attached Figure Description

[0019] Figure 1 A frontal perspective three-dimensional schematic diagram of the foldable and retractable measuring rod device proposed in this utility model;

[0020] Figure 2 A front view sectional perspective of the foldable and retractable measuring rod device proposed in this utility model;

[0021] Figure 3 A top-view perspective view of the foldable and retractable measuring rod device proposed in this utility model;

[0022] Figure 4 A bottom-view perspective view of the foldable and retractable measuring rod device proposed in this utility model;

[0023] Figure 5 A top-view perspective view of the connection structure between the indicator light mounting platform and the anti-drop assembly line of this utility model.

[0024] Figure 6 This is a frontal perspective three-dimensional schematic diagram of the connection structure of the connecting combination pipe and the threaded mounting head of this utility model.

[0025] In the diagram: 1. Support base; 11. Threaded hole; 12. Support cone; 2. Bottom support tube; 3. Measuring tube; 31. Connecting assembly tube; 32. Threaded mounting head; 33. Threaded mounting groove; 4. Indicator light mounting platform; 41. Threaded sleeve ring; 42. Hook ring; 5. Night measurement indicator light; 6. Connection end frame; 7. Anti-fall assembly line; 8. Snap-on folding buckle; 81. Sliding sleeve ring; 82. C-shaped snap-fit ​​sleeve; 9. Auxiliary measuring lamp; 91. Magnetic mounting ring; 92. Auxiliary measuring lamp head. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0028] Please see Figures 1-6 A foldable and retractable measuring rod device includes a support base 1, with a bottom support tube 2 threadedly connected to the top of the support base 1;

[0029] The top of the bottom support tube 2 is provided with a benchmark measuring tube 3, which is composed of multiple tubes arranged in equal-distance threads from bottom to top. The top of the benchmark measuring tube 3 is threaded with an indicator light mounting platform 4. The top of the indicator light mounting platform 4 is provided with a night measurement indicator light 5. The bottom of the support base 1 is provided with a connecting end frame 6. An anti-falling assembly line 7 is provided between the connecting end frame 6 and the indicator light mounting platform 4 and inserted inside the benchmark measuring tube 3.

[0030] Among them, the outside of the benchmark measuring tube 3 is fitted with multiple snap-fit ​​folding buckles 8 at equal intervals;

[0031] The beneficial effects of this solution are as follows: By installing a bottom support tube 2 on the top of the support base 1, it can support and carry multiple tubes assembled together as a benchmark measuring tube 3, which is convenient for daytime surveying and measurement. The top of the benchmark measuring tube 3 can support an indicator light mounting platform 4. The top of the indicator light mounting platform 4 is bolted and fixed with a night measurement indicator light 5, which can be used for luminous marking and facilitates nighttime measurement.

[0032] The benchmark measuring tube 3 is assembled from multiple threaded tube bodies, facilitating disassembly and assembly. A fall-prevention assembly line 7 is installed between the connecting end frame 6 and the indicator light mounting platform 4, which can be inserted into the support of the benchmark measuring tube 3. When the bottom supporting tube 2 and the benchmark measuring tube 3 are folded and removed, they can be connected together by the fall-prevention assembly line 7, preventing them from falling or being lost. When disassembling the benchmark measuring tube 3, it can be folded and assembled together using multiple snap-fit ​​buckles 8. The structure is simple, not easily lost, and easy to carry, making the device accurate and convenient for measurement. It is suitable for day and night marking, and its simple structure makes it easy to fold and store, with good overall integrity, preventing it from falling, and making it highly practical.

[0033] Furthermore, an auxiliary measuring lamp 9 is magnetically attached to the top of the outer side of the measuring tube 3. The auxiliary measuring lamp 9 includes a magnetic mounting ring 91 and an auxiliary measuring lamp head 92. The magnetic mounting ring 91 is magnetically attached to the rod body of the measuring tube 3 and slides therein. The auxiliary measuring lamp head 92 is bolted to the side of the magnetic mounting ring 91 and is a self-powered lamp head.

[0034] Specifically, an auxiliary measuring lamp 9 is magnetically attached to the top of the outer side of the measuring tube 3, facilitating the sliding movement of the auxiliary measuring lamp 9 on the body of the measuring tube 3. The auxiliary measuring lamp 9 includes a magnetic mounting ring 91 and an auxiliary measuring lamp head 92. The magnetic mounting ring 91 is attached to the measuring tube 3 to facilitate sliding movement, while the auxiliary measuring lamp head 92 can assist in nighttime luminous measurement. The measuring tube is convenient for both day and night measurements. When the magnetic mounting ring 91 needs to be used for vertical measurement, multiple folding buckles 8 can be pulled down to the folding buckle 8 position, allowing the folding buckle 8 to be magnetically raised and lowered on the measuring tube 3. The operation is convenient and the use is convenient.

[0035] Furthermore, the bottom support tube 2 is threadedly installed at the center of the support base 1, and the bottom of the bottom support tube 2 extends through to the bottom of the support base 1. The top of the anti-fall assembly line 7 passes through the bottom support tube 2 and the benchmark measuring tube 3 in sequence and is connected to the indicator light mounting platform 4. The anti-fall assembly line 7 is one of nylon line, hemp rope line or steel wire.

[0036] Specifically, the bottom support tube 2 is threadedly installed at the center of the support base 1, which is convenient and stable for disassembly and assembly, and facilitates thread disassembly and assembly operations. The bottom support tube 2 can facilitate the insertion and connection of the anti-fall assembly line 7, which is easy to adapt. The anti-fall assembly line 7 is one of nylon line, hemp rope line or steel wire line, which is convenient to use, easy to use, has good applicability, and is not easily damaged or broken.

[0037] Furthermore, the benchmark measuring tube 3 includes multiple connecting combination tubes 31, threaded mounting heads 32, and threaded mounting grooves 33. The threaded mounting heads 32 and threaded mounting grooves 33 are respectively set on the upper and lower sides of the connecting combination tubes 31. The opposite sides of adjacent threaded mounting heads 32 and threaded mounting grooves 33 are threadedly connected. The adjacent ends of the multiple connecting combination tubes 31 are assembled into one unit by threaded assembly of threaded mounting heads 32 and threaded mounting grooves 33. The bottom connecting combination tube 31 is threadedly inserted into the top of the bottom bearing tube 2. The bottom of the indicator light mounting platform 4 is threadedly sleeved into the top of the top connecting combination tube 31. Multiple buckle folding buckles 8 are correspondingly installed on the multiple connecting combination tubes 31.

[0038] Specifically, threaded mounting heads 32 and threaded mounting grooves 33 are respectively opened on the upper and lower sides of multiple connecting combination pipes 31, so that multiple connecting combination pipes 31 can be assembled and spliced ​​into a whole rod by threaded mounting heads 32 and threaded mounting grooves 33, which is convenient for disassembly and assembly. Anti-drop assembly line 7 passes through multiple connecting combination pipes 31, so that when the connecting combination pipes 31 are disassembled, they can be connected together by anti-drop assembly line 7, which makes it convenient to fold and store multiple connecting combination pipes 31, making operation convenient.

[0039] Furthermore, the bottom of the indicator light mounting platform 4 is provided with a threaded sleeve ring 41, the bottom of the threaded sleeve ring 41 is threadedly fixed to the top of the measuring tube 3, and the night measurement indicator light 5 is bolted to the top of the indicator light mounting platform 4. The night measurement indicator light 5 is a waterproof and self-powered indicator light.

[0040] Specifically, the bottom of the indicator light mounting platform 4 is provided with a threaded sleeve ring 41, which facilitates threaded installation on the top of the measuring tube 3, making disassembly and assembly convenient. The night measurement indicator light 5 is bolted and fixed to the top of the indicator light mounting platform 4, with a stable connection and easy disassembly. The night measurement indicator light 5 is a waterproof and self-powered indicator light, equipped with a battery, which can perform self-powered continuous measurement, facilitating normal use at night and making it convenient to use.

[0041] Furthermore, the connecting end frame 6 is fixedly installed in a U-shape on the bottom of the bearing base 1, and the bottom inner side of the indicator light mounting platform 4 is provided with a hook ring 42. The two ends of the anti-drop assembly line 7 are respectively wound around the connecting end frame 6 and the hook ring 42.

[0042] Specifically, the bottom inner side of the indicator light mounting platform 4 is provided with a hook ring 42, which facilitates the winding of the top of the anti-drop assembly line 7, and facilitates the winding and fixing of the anti-drop assembly line 7 by the connection end frame 6 and the hook ring 42. The fixing adaptability is good, and it is easy to wind and fix the anti-drop assembly line 7. The fixing adaptability is good, and the installation is stable and convenient.

[0043] Furthermore, the snap-fit ​​folding buckle 8 includes a sliding sleeve ring 81 and a C-shaped locking sleeve 82. The sliding sleeve ring 81 is sleeved and fixed on the measuring rod tube 3, and the C-shaped locking sleeve 82 is fixedly installed on the side of the sliding sleeve ring 81. The inner diameter of the C-shaped locking sleeve 82 matches the outer diameter of the measuring rod tube 3.

[0044] Specifically, the sliding sleeve ring 81 and the C-shaped locking sleeve 82 are combined into a whole. Multiple sliding sleeve rings 81 are respectively sleeved and slid on different connecting combination tubes 31. When the connecting combination tubes 31 are disassembled and folded, they can be locked with the C-shaped locking sleeves 82 in sequence, so that they can be folded into a whole, which is convenient for storage and placement, easy to use and easy to carry.

[0045] Furthermore, the bottom of the support base 1 is provided with threaded holes 11 arranged in a ring around the bottom support tube 2. Each of the multiple threaded holes 11 is threaded with a support cone 12. The two ends of the support cone 12 extend out of the upper and lower sides of the support base 1, and the bottom of the support cone 12 is conical.

[0046] Specifically, the bottom of the bearing base 1 is provided with threaded holes 11 arranged in a ring around the bottom bearing tube 2, which facilitates the stable threaded installation of multiple supporting bearing cones 12. This makes it easy to insert or place stably on different ground surfaces and is suitable for stable horizontal placement on different ground surfaces. The height can be adjusted by rotating the supporting bearing cones 12, which is suitable for horizontal insertion and fixing of the bearing base 1, ensuring tightness and stability of the insertion.

[0047] How to use and how to work this device:

[0048] By installing a bottom support tube 2 on the top of the support base 1, the support base 1 can be stably inserted and supported on the ground. The top of the bottom support tube 2 is threaded with a measuring pole tube 3 composed of multiple tube bodies. The top of the measuring pole tube 3 can support the indicator light mounting platform 4. The whole assembly is a measuring pole, which is convenient for daytime surveying. The top of the indicator light mounting platform 4 is bolted with a nighttime measuring indicator light 5, which is convenient for nighttime auxiliary luminous marking and nighttime measurement.

[0049] The benchmark measuring tube 3 is assembled from multiple tube bodies using threaded connections, facilitating disassembly and assembly. A fall-prevention assembly line 7, inserted within the benchmark measuring tube 3, connects the support base 1, bottom support tube 2, benchmark measuring tube 3, and indicator light mounting platform 4 into a single unit. When the bottom support tube 2 and benchmark measuring tube 3 are folded and removed, they can be reassembled together using the fall-prevention assembly line 7, preventing them from falling or being lost. Clamping buckles 8 are installed on multiple tube bodies of the benchmark measuring tube 3. When the benchmark measuring tube 3 is disassembled, adjacent tube bodies can be sequentially snapped together using the clamping buckles 8, facilitating easy folding and assembly. The structure is simple, prevents loss, is convenient to use, and easy to carry.

[0050] An auxiliary measuring lamp 9 is magnetically attached to the top of the outer side of the measuring tube 3, which facilitates the sliding movement of the auxiliary measuring lamp 9 on the body of the measuring tube 3. The auxiliary measuring lamp 9 includes a magnetic mounting ring 91 and an auxiliary measuring lamp head 92. The magnetic mounting ring 91 is attached to the measuring tube 3 to facilitate sliding movement, and the auxiliary measuring lamp head 92 can assist in nighttime luminous measurement. The measuring tube is convenient for both day and night measurement. When the magnetic mounting ring 91 needs to be used for up and down measurement, multiple buckle folding buckles 8 can be pulled down to the buckle folding buckle 8, which allows the buckle folding buckle 8 to be magnetically raised and lowered on the measuring tube 3. The operation is convenient and the use is convenient.

[0051] The bottom support tube 2 is threadedly installed at the center of the support base 1, which is convenient and stable for disassembly and assembly, and facilitates thread disassembly and assembly operations. The bottom support tube 2 can facilitate the insertion and connection of the anti-falling assembly line 7, which is easy to adapt. The anti-falling assembly line 7 is one of nylon line, hemp rope line or steel wire line, which is convenient to use, easy to use, has good applicability, and is not easily damaged or broken.

[0052] The benchmark measuring tube 3 includes multiple connecting combination tubes 31, threaded mounting heads 32, and threaded mounting grooves 33. The threaded mounting heads 32 and threaded mounting grooves 33 are respectively opened on the upper and lower sides of the multiple connecting combination tubes 31, so that the multiple connecting combination tubes 31 can be assembled and spliced ​​into a whole rod body by the threaded mounting heads 32 and threaded mounting grooves 33, which is convenient for disassembly and assembly. The anti-drop assembly line 7 passes through the multiple connecting combination tubes 31, so that when the connecting combination tubes 31 are disassembled, they can be connected together by the anti-drop assembly line 7, which makes it easy to fold and store the multiple connecting combination tubes 31, making the operation convenient.

[0053] The bottom of the indicator light mounting platform 4 is provided with a threaded sleeve ring 41, which facilitates threaded installation on the top of the measuring tube 3. It is easy to install and remove. The night measurement indicator light 5 is bolted and fixed to the top of the indicator light mounting platform 4. The bolting is stable and easy to disassemble. The night measurement indicator light 5 is a waterproof self-powered indicator light, equipped with a battery, which can perform self-powered continuous measurement, which is convenient for normal use at night.

[0054] The bottom inner side of the indicator light mounting platform 4 is provided with a hook ring 42, which facilitates the winding of the top of the anti-drop assembly line 7, and facilitates the winding and fixing of the anti-drop assembly line 7 by the connection end frame 6 and the hook ring 42. The fixing adaptability is good, and it is easy to wind and fix the anti-drop assembly line 7. The fixing adaptability is good, and the installation is stable and convenient.

[0055] The buckle folding buckle 8 includes a sliding sleeve ring 81 and a C-shaped locking sleeve 82. The sliding sleeve ring 81 and the C-shaped locking sleeve 82 are combined into a whole. Multiple sliding sleeve rings 81 are respectively sleeved and slid on different connecting combination tubes 31. When the connecting combination tubes 31 are disassembled and folded, they can be locked with the C-shaped locking sleeves 82 in sequence, so that they can be folded into a whole, which is convenient for storage and placement, easy to use, and easy to carry.

[0056] The bottom of the bearing base 1 is provided with threaded holes 11 arranged in a ring around the bottom bearing tube 2, which facilitates the stable threaded installation of multiple supporting bearing cones 12. It is easy to insert or place stably on different ground surfaces, and is suitable for stable horizontal placement on different ground surfaces. The height can be adjusted by rotating the supporting bearing cones 12, which is suitable for horizontal insertion and fixing of the bearing base 1. The insertion tightness and stability are good.

[0057] The device makes measurement accurate and convenient, suitable for marking during both day and night, and has a simple structure that is easy to fold and store. It has good overall integrity, is not easy to fall off, and is highly practical.

[0058] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A foldable and retractable measuring rod device, comprising a support base (1), characterized in that: The top of the support base (1) is threadedly connected to the bottom support tube (2); The top of the bottom support tube (2) is provided with a benchmark measuring tube (3) composed of multiple tubes arranged in equal-distance threads from bottom to top. The top of the benchmark measuring tube (3) is threaded with an indicator light mounting platform (4). The top of the indicator light mounting platform (4) is provided with a night measurement indicator light (5). The bottom of the support base (1) is provided with a connecting end frame (6). An anti-falling assembly line (7) is provided between the connecting end frame (6) and the indicator light mounting platform (4) and inserted into the benchmark measuring tube (3). The outer side of the benchmark measuring tube (3) is fitted with multiple snap-fit ​​folding buckles (8) at equal intervals.

2. The foldable and retractable measuring rod device according to claim 1, characterized in that: An auxiliary measuring lamp (9) is magnetically attached to the top of the outer side of the measuring tube (3). The auxiliary measuring lamp (9) includes a magnetic mounting ring (91) and an auxiliary measuring lamp head (92). The magnetic mounting ring (91) is magnetically attached and slides on the rod of the measuring tube (3). The auxiliary measuring lamp head (92) is bolted to the side of the magnetic mounting ring (91). The auxiliary measuring lamp head (92) is a self-powered lamp head.

3. The foldable and retractable measuring rod device according to claim 1, characterized in that: The bottom support tube (2) is threadedly installed at the center of the support base (1). The bottom of the bottom support tube (2) extends through to the bottom of the support base (1). The top of the anti-fall assembly line (7) passes through the bottom support tube (2) and the benchmark measuring tube (3) in sequence and is connected to the indicator light mounting platform (4). The anti-fall assembly line (7) is one of nylon line, hemp rope line or steel wire.

4. The foldable and retractable measuring rod device according to claim 1, characterized in that: The benchmark measuring tube (3) includes multiple connecting combination tubes (31), threaded mounting heads (32) and threaded mounting grooves (33). The threaded mounting heads (32) and threaded mounting grooves (33) are respectively set on the upper and lower sides of the connecting combination tubes (31). The opposite sides of the adjacent threaded mounting heads (32) and threaded mounting grooves (33) are threadedly connected. The adjacent ends of the multiple connecting combination tubes (31) are assembled into one piece by the threaded mounting heads (32) and threaded mounting grooves (33). The bottom connecting combination tube (31) is threadedly inserted into the top of the bottom bearing tube (2). The bottom of the indicator light mounting platform (4) is threadedly sleeved onto the top of the top connecting combination tube (31). The multiple buckle folding buckles (8) are correspondingly installed on the multiple connecting combination tubes (31).

5. The foldable and retractable measuring rod device according to claim 1, characterized in that: The bottom of the indicator light mounting platform (4) is provided with a threaded sleeve ring (41). The bottom of the threaded sleeve ring (41) is threadedly fixed to the top of the measuring tube (3). The night measurement indicator light (5) is bolted to the top of the indicator light mounting platform (4). The night measurement indicator light (5) is a waterproof and self-powered indicator light.

6. The foldable and retractable measuring rod device according to claim 1, characterized in that: The connecting end frame (6) is fixedly installed in a U-shape at the bottom of the bearing base (1). The inner side of the bottom of the indicator light mounting platform (4) is provided with a hook ring (42). The two ends of the anti-fall assembly line (7) are respectively wound around the connecting end frame (6) and the hook ring (42).

7. The foldable and retractable measuring rod device according to claim 1, characterized in that: The buckle folding buckle (8) includes a sliding sleeve ring (81) and a C-shaped locking sleeve (82). The sliding sleeve ring (81) is sleeved and fixed on the measuring tube (3). The C-shaped locking sleeve (82) is fixedly installed on the side of the sliding sleeve ring (81). The inner diameter of the opening of the C-shaped locking sleeve (82) matches the outer diameter of the measuring tube (3).

8. The foldable and retractable measuring rod device according to claim 4, characterized in that: The bottom of the support base (1) is provided with threaded holes (11) arranged in a ring around the bottom support tube (2). Each of the threaded holes (11) is threaded with a support cone (12). The two ends of the support cone (12) extend out of the upper and lower sides of the support base (1), and the bottom of the support cone (12) is conical.

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