A sign post with adjustable pointing angle

Abstract

The utility model discloses a sign post of adjustable pointing angle, including mounting seat, pointing mark, the mounting seat top is connected with the sign post and is fixed with the cap of sign post top screw joint, and the pointing mark rotation is connected in the cap top center place, and the cap bottom is equipped with the adjusting assembly in, and the adjusting assembly includes the mounting bracket, and the mounting bracket is connected in the cap bottom center place, and the mounting bracket is rotatably connected with the turntable through the damping pivot in, and the pointing mark adopts rigid material quality, and there is no aging and falling risk, need not repeatedly purchase the sticker, need not frequently arrange the personnel on -the -spot replacement, need not to remove the sign post body, only need to loosen the fixed bolt of pointing mark, can trigger the adjustment through the manual rotation bottom rocker arm, and the operation and maintenance personnel can observe the pointing in real time, and accurate stop in the position with the new pipeline trend matching, and after the adjustment, the bolt can be locked, and the quick adaptation different stage's guiding demand, and the interference of the surrounding environment in the adjustment process is reduced greatly.

Description

Technical Field

[0001] This utility model belongs to the field of marker post technology, specifically relating to a marker post with an adjustable pointing angle. Background Technology

[0002] In the urban gas pipeline network operation and maintenance system, buried gas marker posts are key infrastructure to ensure pipeline safety management. Their core function is to provide visual guidance on the underground pipeline route for daily operations such as inspection, maintenance, and construction through pipeline directional markings on the surface. This helps staff to quickly and accurately determine the actual laying path of the pipeline, avoid safety accidents such as construction damage and leakage caused by pipeline positioning deviations, and improve the efficiency of operation and maintenance work.

[0003] Currently, most of the buried marker posts widely used in China's gas pipeline network are made of fiber material, and the pipeline directional markings on these posts are mostly stickers. However, due to the long-term influence of the complex outdoor environment, including continuous ultraviolet radiation and alternating temperature and humidity changes, most of the pipeline directional markings in use are aging. The marking pigments gradually fade, the lettering becomes blurred, and some posts even have markings completely detached. This problem directly leads to difficulties in daily operation and maintenance, making it impossible for staff to obtain effective directional information from the marker posts and accurately determine the actual direction of the pipelines on site. This not only significantly extends the time and cost of inspection and maintenance work and increases the workload of operation and maintenance personnel, but also significantly increases the safety risk of pipeline damage due to misoperation, posing a serious hidden danger to the stable operation of the gas pipeline network. Furthermore, after the pipeline directional stickers age and become damaged, it is necessary to customize new pipeline directional stickers and affix them to the surface of the original marker posts to replace the blurred markings. At the same time, repeatedly affixing stickers increases the workload of operation and maintenance personnel, creating a vicious cycle of "applying and then breaking, breaking and then reapplying". Utility Model Content

[0004] The purpose of this invention is to provide a marker post with an adjustable pointing angle to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable pointing angle marker post, comprising:

[0006] Mounting base, the top of which is connected to a marker post and the top of the marker post is screwed and fixed with a cap;

[0007] A directional indicator is rotatably connected to the center of the top of a cap. An adjustment assembly for adjusting the pointing angle of the directional indicator is located inside the bottom of the cap. The adjustment assembly includes a mounting bracket connected to the center of the bottom of the cap. A turntable is rotatably connected to the mounting bracket via a damping shaft. The directional indicator is fitted onto the top end of the damping shaft. By rotating a rocker arm at the bottom of the mounting bracket, the rotating rocker arm drives the turntable to rotate via a transmission component within the mounting bracket, thereby adjusting the pointing angle of the directional indicator.

[0008] Preferably, the transmission component includes a pinion gear, and a rotating rod is rotatably connected to the mounting bracket via a bearing, with the pinion gear fixedly mounted on the rotating rod. One end of the rocker arm is connected to the rotating rod, thus clarifying the transmission component structure in the adjustment assembly. The rocker arm drives the rotating rod to rotate, thereby causing the pinion gear fixed on the rotating rod to rotate synchronously, transmitting power for the subsequent rotation of the turntable.

[0009] Preferably, a large gear is fixedly mounted on the bottom of the turntable, and a small gear meshes with the large gear. One end of the damping shaft rotates through the cap and connects to the nut. The directional indicator is fixed to the nut by a second bolt. Through the meshing of the small gear and the large gear, the power of the rotating rod is transmitted to the turntable, causing the turntable to drive the damping shaft to rotate. At the same time, the nut and the second bolt are used to fix the directional indicator on the damping shaft, ensuring that the directional indicator rotates synchronously with the damping shaft to achieve angle adjustment.

[0010] Preferably, a protective cover is provided at the connection between the rocker arm and the rotating rod. A pawl is provided inside the protective cover and is rotatably connected to the mounting bracket through a bearing. The protective cover protects the connection between the rocker arm and the rotating rod to prevent damage to the components. At the same time, the rotatable pawl inside the protective cover lays the structural foundation for subsequent locking of the pointing angle.

[0011] Preferably, one end of the rotating rod inside the protective cover is fixedly fitted with a ratchet, and one end of the pawl is engaged with the ratchet, so that the pawl restricts the pinion from rotating counterclockwise. Through the cooperation of the ratchet and the pawl, the rotating rod is restricted from driving the pinion to rotate counterclockwise, thereby preventing the directional indicator from shifting counterclockwise due to external force and realizing one-way locking of the directional angle.

[0012] Preferably, a torsion spring is provided at the rotating part where the pawl and the mounting bracket rotate. One end of the torsion spring is connected to the pawl, and the other end is connected to the mounting bracket. The elastic force of the torsion spring ensures that the pawl always remains in contact with the ratchet, ensuring a stable and reliable locking effect of the pawl on the ratchet and preventing locking failure due to pawl loosening.

[0013] Preferably, the cap and the marker post are fixed together by a first bolt, which firmly connects the cap and the marker post to form a stable overall structure, providing a solid installation base for the directional markings on the top of the cap and the adjustment components at the bottom.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) The directional signs are made of rigid material, which is more resistant to ultraviolet rays and corrosion, and has no risk of aging and falling off. There is no need to repeatedly purchase stickers, no need to frequently arrange personnel to replace them on site, and no need to remove the sign post itself. Only the fixing bolts of the directional sign need to be loosened, and the adjustment can be triggered by manually rotating the bottom rocker arm. The maintenance personnel can observe the direction in real time and accurately stop at the position that matches the new pipeline route. After adjustment, tightening the bolts can lock it. Whether it is pipeline fine-tuning or local modification, there is no need to reinstall new posts or replace stickers. It can quickly adapt to the guidance needs of different stages and greatly reduce the interference of the adjustment process on the surrounding environment.

[0016] (2) The dual locking mechanism of "ratchet and pawl + damping shaft" ensures long-term stable pointing: the ratchet and pawl firmly restrict the unidirectional rotation of the marker, preventing angular deviation caused by intentional contact or large external forces; while the damping force of the damping shaft can directly offset various small external forces—when a breeze pushes the marker, the frictional resistance between the damping sleeve and the shaft will "hold" the shaft, preventing it from rotating easily; when environmental vibrations are transmitted to the marker, the damping force can absorb the vibration energy, preventing slow angular deviation caused by high-frequency small-amplitude shaking of the marker. This dual protection ensures that the marker always maintains accurate pointing, providing a reliable pipeline location reference for inspection and maintenance, and reducing the risk of safety accidents caused by marker deviation from the source.

[0017] (3) If the indicator is damaged (such as the shell is cracked), there is no need to remove the cap or adjustment components. Simply loosen the fixing bolts between the indicator and the damping shaft to remove the old indicator and replace it with a new one. The operation does not require contact with the internal transmission components, avoiding accidental contact that could cause adjustment structure failure, and greatly reducing the difficulty and workload of operation and maintenance personnel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a bottom view of the cap of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the present invention for fixing the directional mark with the second bolt and nut;

[0021] Figure 4 This is a schematic diagram of the structure of the adjustment component of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the mounting bracket of this utility model after the protective cover at the bottom has been removed;

[0023] Figure 6 This is a schematic diagram of the structure of this utility model after the ratchet pawl is disassembled.

[0024] In the diagram: 1. Mounting base; 2. Marker post; 3. First bolt; 4. Cap; 5. Directional marker; 6. Mounting bracket; 7. Turntable; 8. Damping shaft; 9. Rocker arm; 10. Pinion; 11. Rotating rod; 12. Large gear; 13. Nut; 14. Second bolt; 15. Protective cover; 16. Pawl; 17. Ratchet; 18. Torsion spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved with", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] This utility model provides, for example Figure 1-6 The adjustable pointing angle marker post shown includes:

[0028] Mounting base 1 is used to fix and connect with the ground foundation, providing stable support for the entire marker post. It can adapt to outdoor buried environments (such as soil and gravel strata), prevent the post from tilting due to external impact or environmental vibration, and ensure the overall structural stability.

[0029] Marker post 2, which is vertically connected to the top of mounting base 1, serves as the main load-bearing structure. It can be made of corrosion-resistant and UV-resistant materials (such as reinforcing fibers and metal alloys) to protect internal components and mark basic pipeline information. A screw hole is reserved on its top to accommodate the cap installation.

[0030] The cap 4 is detachably screwed to the top of the marker post 2. On the one hand, it seals and protects the top of the marker post 2 to prevent rainwater and sand from entering the post body and damaging the components. On the other hand, it provides a stable mounting base for the directional sign 5 and the adjustment components.

[0031] The directional sign 5 is rotatably connected to the center of the top of the cap 4. It is made of rigid and wear-resistant material (such as metal or high-strength plastic). The surface can be printed or engraved with pipeline route markings (such as arrows or text). It has anti-aging and anti-fading properties and is used to intuitively guide the underground pipeline laying path.

[0032] The adjustment component, located inside the bottom of the cap 4, functions to adjust and lock the angle of the directional marker 5. It includes a mounting frame 6, a turntable 7, a damping shaft 8, and a rocker arm 9. The mounting frame 6 is fixedly connected to the center of the bottom of the cap 4, providing a mounting framework for the component. The turntable 7 is rotatably connected to the mounting frame 6 via the damping shaft 8. The damping shaft 8 uses its own damping force to counteract small external forces such as breezes or vibrations, preventing the turntable 7 from rotating arbitrarily. The directional marker 5 is fitted onto the top end of the damping shaft 8 and rotates synchronously with it. Maintenance personnel can manually rotate the rocker arm 9 at the bottom of the mounting frame 6 to trigger the transmission components within the mounting frame 6 to rotate the turntable 7, thereby driving the damping shaft 8 and the directional marker 5 to adjust their angles synchronously. This achieves precise matching between the directional marker 5 and the underground pipeline route, and the adjustment process does not require removing the marker post itself, making the operation convenient and efficient.

[0033] The transmission component includes a pinion 10 and a rotating rod 11. The rotating rod 11 is rotatably connected to the side wall of the mounting frame 6 via a bearing. The bearing reduces the frictional resistance between the rotating rod 11 and the mounting frame 6, ensuring smooth rotation without jamming. The pinion 10 is fixedly mounted on one end of the rotating rod 11 near the inner side of the mounting frame 6, and one end of the rocker arm 9 is fixedly connected to the end of the rotating rod 11 extending outward from the mounting frame 6. When the maintenance personnel rotate the rocker arm 9, the driving force can be transmitted to the pinion 10 through the rotating rod 11, causing the pinion 10 to rotate synchronously, providing power input for subsequent angle adjustment. This structure also reduces the operating force and improves the convenience of adjustment.

[0034] A large gear 12 is fixedly mounted on the bottom of the turntable 7. The large gear 12 meshes with the small gear 10, and power is transmitted through gear transmission. The rapid rotation of the small gear 10 is converted into the slow rotation of the large gear 12 and the turntable 7, so as to achieve precise micro-adjustment of the angle of the directional mark 5 and avoid over-adjustment. The top end of the damping shaft 8 rotates through the center hole of the cap 4, and a gap is reserved at the through-hole to accommodate the rotation of the shaft. The top of the damping shaft 8 is limited by the nut 13. The directional mark 5 is screwed to the nut 13 by the second bolt 14. This fixing method can realize the detachable installation of the directional mark 5, which is convenient for replacement when the mark is damaged. Moreover, the disassembly process does not require touching the internal adjustment components, reducing the difficulty of operation.

[0035] A protective cover 15 is provided on the outside of the connection between the rocker arm 9 and the rotating rod 11. The protective cover 15 is made of waterproof and impact-resistant material, which can cover the connection between the rocker arm 9 and the rotating rod 11 and the transmission components at the bottom of the mounting bracket 6, preventing rainwater and sand from entering and causing corrosion of the components. At the same time, it avoids damage to the transmission structure by external force collisions and extends the service life of the components. A pawl 16 is provided inside the protective cover 15. The pawl 16 is rotatably connected to the inner wall of the mounting bracket 6 through a bearing. The bearing can ensure that the pawl 16 can rotate flexibly, providing a structural basis for the subsequent one-way locking function. Moreover, the installation position of the pawl 16 does not affect the normal operation of the rotating rod 11 and the pinion 10.

[0036] The rotating rod 11 is fixedly fitted with a ratchet 17 at one end inside the protective cover 15. The teeth of the ratchet 17 have a unidirectional inclined structure. One end of the pawl 16 is tightly engaged with the teeth of the ratchet 17 and can lock the tooth groove. When the rotating rod 11 drives the ratchet 17 to rotate clockwise to adjust the angle of the indicator, the pawl 16 can slide along the inclined surface of the teeth of the ratchet 17 without obstructing the adjustment operation. After the adjustment is in place, if there is an external force (such as intentional touch or strong wind) that attempts to make the rotating rod 11 rotate counterclockwise (causing the angle of the indicator to shift), the pawl 16 will firmly lock the tooth groove of the ratchet 17, restricting the ratchet 17 and the rotating rod 11 to rotate counterclockwise. This, in turn, locks the pinion 10, the gear 12 and the turntable 7 through the transmission chain to prevent the angle of the indicator 5 from shifting and to ensure the accuracy of the pipeline guidance.

[0037] A torsion spring 18 is fitted at the rotatable connection between the pawl 16 and the mounting bracket 6. One end of the torsion spring 18 is embedded in the preset slot of the pawl 16, and the other end is embedded in the slot on the inner wall of the mounting bracket 6. The torsion spring 18 can generate continuous elastic tension in its natural state, which always pushes one end of the pawl 16 against the teeth of the ratchet 17, ensuring that the pawl 16 and the ratchet 17 are tightly fitted, avoiding separation due to environmental vibration and temperature changes, maintaining the stability of the one-way locking function, and the elastic force of the torsion spring 18 can be adapted to the rotation requirements of the pawl 16, without affecting the sliding of the pawl 16 along the teeth of the ratchet 17 during adjustment.

[0038] The cap 4 and the marker post 2 are fixed together by a first bolt 3. The first bolt 3 is evenly distributed (at least 2) along the circumference of the cap 4, which can ensure the rigidity of the connection between the cap 4 and the marker post 2 and prevent the cap 4 from shaking due to wind or vibration, thereby ensuring the stability of the top pointing sign 5. At the same time, the bolt connection is a detachable structure. When the internal adjustment components need maintenance, such as gear lubrication or damping shaft 8 maintenance, the first bolt 3 can be unscrewed and the cap 4 can be removed without dismantling the entire marker post 2, reducing maintenance costs and operational complexity.

[0039] The adjustable pointing angle marker post is first aligned with the top end face of the marker post 2 and the bottom end face of the cap 4. The first bolt 3 is then threaded through the pre-set screw holes on both to secure them. After the bolt is tightened, the cap 4 and the marker post 2 form a rigid whole, preventing the top structure from shaking during subsequent adjustments and providing a stable mounting base for the adjustment components. Then, the center hole of the pointing mark 5 is fitted onto one end of the top of the damping shaft 8, so that the back of the mark is in close contact with the limiting step at the top of the damping shaft 8. Next, the second bolt 14 is threaded through the corresponding holes of the damping shaft 8 and the mark, and tightened with the nut 13. At this point, the pointing mark 5 and the damping shaft 8 form a synchronously rotating whole.

[0040] The core components of the adjustment assembly (mounting bracket 6, turntable 7, damping shaft 8, gear set, etc.) are pre-assembled on the bottom of the cap 4. The mounting bracket 6 is fixed to the center of the bottom of the cap 4 by welding or bolts to ensure that its axis coincides with the axis of the cap 4. The turntable 7 is mounted inside the mounting bracket 6 by bearings and can rotate flexibly around its own axis. The lower end of the damping shaft 8 is rigidly connected to the center of the turntable 7 (such as by welding or keying), and the upper end rotates upward through the center hole of the cap 4 and finally connects to the top indicator 5. Through this structure, the adjustment assembly and the indicator 5 form a "linkage path". When the turntable 7 rotates, it can directly drive the damping shaft 8 and the indicator to rotate synchronously.

[0041] The bottom outer side of the mounting bracket 6 is equipped with a manually rotatable rocker arm 9. One end of the rocker arm 9 is fixedly connected to one end of the rotating rod 11 (e.g., by welding), while the middle part of the rotating rod 11 is connected to the side wall of the mounting bracket 6 through a bearing. This structure allows the rotating rod 11 to rotate flexibly around the bearing axis. Maintenance personnel only need to manually rotate the rocker arm 9 clockwise to drive the rotating rod 11 to rotate synchronously, forming the "power input end" for adjustment. The bearing significantly reduces the friction between the rotating rod 11 and the mounting bracket 6, ensuring a smooth operation and preventing jamming. A small gear 10 meshes with a large gear 12. A small gear 10 is fixedly mounted on the rotating rod 11 near the inner side of the mounting bracket 6. Correspondingly, a small gear 10 is fixedly mounted on the bottom edge of the turntable 7. There is a large gear 12, and the small gear 10 is fully meshed with the teeth of the large gear 12. When the rotating rod 11 drives the small gear 10 to rotate, the small gear 10 will drive the large gear 12 to rotate synchronously through the meshing of its teeth, thus completing the "power transmission". Since the large gear 12 is fixedly connected to the turntable 7, the rotation of the large gear 12 will directly drive the turntable 7 to rotate synchronously inside the mounting bracket 6. The turntable 7 is rigidly connected to the lower end of the damping shaft 8, so the rotation of the turntable 7 will further drive the damping shaft 8 to rotate. Finally, when the damping shaft 8 rotates, it can drive the sign to rotate around its own axis. Through this series of linkages, the manual rotation of the rocker arm 9 is converted into the angle adjustment of the sign 5 until the direction of the sign is completely consistent with the actual direction of the underground gas pipeline.

[0042] Once adjusted, the angle can be locked by a self-locking mechanism to prevent external force from causing the marking to shift. This relies on the synergistic action of "ratchet 17, pawl 16, and torsion spring 18," with the specific mechanism as follows: The ratchet 17 and pawl 16 engage and lock: The rotating rod 11, located inside the mounting bracket 6 near the pinion 10, is also fitted with a ratchet 17 (the teeth of the ratchet 17 have a unidirectional inclined structure, allowing the rotating rod 11 to rotate only clockwise; counter-clockwise rotation will cause it to jam). Simultaneously, on the inner side of the mounting bracket 6, corresponding to the position of the ratchet 17, a pawl 16 is connected via a bearing. One end of the pawl 16 (the locking end) is always engaged with the teeth of the ratchet 17. When the rotating rod 11 drives the ratchet 17 to rotate clockwise (when adjusting the angle), a torsion spring 18 is fitted at the bearing connection position between the pawl 16 and the mounting bracket 6 (one end of the torsion spring 18 is embedded in the pawl 16). The slot (the other end of which is embedded in the slot of the mounting bracket 6) – In the natural state of the torsion spring 18, its elastic tension will always push the locking end of the pawl 16 towards the teeth of the ratchet 17, ensuring that the pawl 16 and the ratchet 17 are always tightly fitted and will not separate due to vibration or slight collision. This allows the locking end of the pawl 16 to slide along the inclined surface of the teeth of the ratchet 17 without affecting rotation. However, when the adjustment is in place, if an external force attempts to rotate the sign counterclockwise (such as wind or human touch), it will drive the damping shaft 8, turntable 7, large gear 12, small gear 10 and rotating rod 11 to rotate counterclockwise synchronously. At this time, the ratchet 17 will also rotate counterclockwise, and the locking end of the pawl 16 will be locked in the tooth groove of the ratchet 17, preventing the ratchet 17 from continuing to rotate. This locks the position of the entire adjustment component and the sign through the transmission chain, achieving "one-way limit" and avoiding angular deviation.

[0043] When a small external force (such as wind) attempts to rotate the marker, the resistance provided by the damping sleeve inside the damping shaft 8 will offset part of the external force, preventing the marker from "slightly deviating" and forming a "double lock" with the ratchet 17 and pawl 16, further improving angular stability and ensuring long-term accurate pointing of the marker.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A marker post with an adjustable pointing angle, characterized in that, include: Mounting base (1), the top of which is connected to a marker post (2) and the top of the marker post (2) is screwed and fixed with a cap (4); A directional marker (5) is rotatably connected to the center of the top of a cap (4). The bottom of the cap (4) is provided with an adjustment component for adjusting the pointing angle of the directional marker (5). The adjustment component includes a mounting bracket (6), which is connected to the center of the bottom of the cap (4). A turntable (7) is rotatably connected to the mounting bracket (6) via a damping shaft (8). The directional marker (5) is fitted onto the top end of the damping shaft (8). By rotating the rocker arm (9) at the bottom of the mounting bracket (6), the rotating rocker arm (9) drives the turntable (7) to rotate via the transmission component inside the mounting bracket (6), thereby realizing the adjustment of the pointing angle of the directional marker (5).

2. The adjustable pointing angle marker post according to claim 1, characterized in that: The transmission component includes a pinion (10), and a rotating rod (11) is rotatably connected to the mounting bracket (6) via a bearing. The pinion (10) is fixedly mounted on the rotating rod (11), and one end of the rocker arm (9) is connected to the rotating rod (11).

3. The adjustable pointing angle marker post according to claim 2, characterized in that: The bottom of the turntable (7) is fixedly fitted with a large gear (12), the small gear (10) meshes with the large gear (12), the top end of the damping shaft (8) rotates through the cap (4) and is connected to the nut (13), and the pointing mark (5) is screwed to the nut (13) by a second bolt (14).

4. The adjustable pointing angle marker post according to claim 2, characterized in that: The connection between the rocker arm (9) and the rotating rod (11) is provided with a protective cover (15), and a pawl (16) is provided inside the protective cover (15), and the pawl (16) is rotatably connected to the mounting bracket (6) through a bearing.

5. The adjustable pointing angle marker post according to claim 4, characterized in that: The rotating rod (11) is fixedly fitted with a ratchet (17) at one end inside the protective cover (15), and the ratchet (16) at one end locks the ratchet (17) so that the ratchet (16) restricts the pinion (10) from rotating counterclockwise.

6. The adjustable pointing angle marker post according to claim 4, characterized in that: A torsion spring (18) is provided at the point where the pawl (16) rotates with the mounting bracket (6). One end of the torsion spring (18) is connected to the pawl (16), and the other end is connected to the mounting bracket (6).

7. The adjustable pointing angle marker post according to claim 1, characterized in that: The cap (4) is fixed to the marker post (2) by the first bolt (3).

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