CN220230304U

CN220230304U - Face blasting projection arrangement

Info

Publication number: CN220230304U
Application number: CN202321382276.1U
Authority: CN
Inventors: 张文明; 申雪松; 周明; 李瑞俊; 李泽荣; 马建国; 任强; 张玉荣; 刘士波; 袁波; 王丹
Original assignee: China Railway No 3 Engineering Group Co Ltd
Current assignee: China Railway No 3 Engineering Group Co Ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2023-12-22
Anticipated expiration: 2033-06-01

Abstract

The utility model relates to a tunnel blasting device and discloses a tunnel face blasting projection device which comprises a projection mechanism and a supporting mechanism, wherein the projection mechanism is rotatably installed on the supporting mechanism through a mounting bracket, the projection mechanism is rotatably connected with the mounting bracket through a rotating piece, a model accommodating cavity is formed in the projection mechanism, a detachable tunnel model is arranged in the model accommodating cavity, a positioning mechanism is arranged in the model accommodating cavity so as to position the tunnel model, and a projection light source is arranged in the projection mechanism so as to project the tunnel model to form a projection graph of a blasthole section. The device can carry out accurate location to the position and the direction of blasting porthole to avoid the destruction of peripheral rock, make the tunnel periphery reach smooth blasting's effect, in addition can also improve the progress, the quality of construction greatly.

Description

Face blasting projection arrangement

Technical Field

The utility model relates to a tunnel blasting device, in particular to a tunnel face blasting projection device.

Background

Tunnel engineering is generally classified as heavy difficult engineering of projects, not only is construction quality and safety related, but also plays a vital role in economic benefit of the projects, the effect after blasting often cannot obtain tunnel contour lines with flat surfaces, and excessive and insufficient excavation which is unexpected in a situation often occurs, so that great engineering waste is caused, and the construction progress and material consumption are directly influenced; the poor smooth blasting effect is also a primary factor for causing the void behind the secondary lining of the tunnel, and for the II and III level surrounding rock sections, the concrete spraying is difficult to smooth the surface because a steel frame is not generally arranged for primary support; for IV and V-class surrounding rock sections, the light explosion difference can sometimes cause unsmooth erection of the steel frame and cause a fluctuation phenomenon, so that the waterproof board is difficult to be closely attached to the primary support.

In tunnel face blasting operation, the number of blast holes and the layout of blast holes of the face are designed by an empirical method, so that the phenomena of overexcavation, underexcavation of surrounding rock bodies of the tunnel, deviation of tunnel lines from a design route and the like are often caused, the construction progress is slowed down, and the construction cost is increased.

Therefore, a new type of face blasting projection device needs to be designed.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the tunnel face blasting projection device which can accurately position the position and the direction of blasting blastholes so as to avoid the damage of peripheral rocks, ensure that the periphery of a tunnel achieves the effect of smooth blasting, and greatly improve the construction progress and quality.

In order to solve the technical problems, the utility model provides a face blasting projection device which comprises a projection mechanism and a support mechanism, wherein the projection mechanism is rotatably installed on the support mechanism through a mounting bracket, the projection mechanism is rotatably connected with the mounting bracket through a rotating piece, a model accommodating cavity is formed in the projection mechanism, a detachable tunnel model is arranged in the model accommodating cavity, a positioning mechanism is arranged in the model accommodating cavity so as to position the tunnel model, and a projection light source is arranged in the projection mechanism so as to project the tunnel model to form a projection graph of a blast hole section.

Further, the supporting mechanism comprises a supporting platform and a plurality of supporting feet, wherein the supporting feet are telescopically arranged below the supporting platform, and the supporting feet can rotate around the connecting positions of the supporting feet and the supporting platform.

Further, one end of the supporting leg far away from the supporting platform is provided with a claw structure.

Further, a horizontal detection mechanism is arranged on the supporting mechanism.

Further, the level detecting mechanism is a level bubble.

Further, a distance detection mechanism is arranged on the projection mechanism.

Further, the distance detection mechanism is a laser range finder.

Further, a focus adjusting member is provided on the projection mechanism.

Further, the positioning mechanism comprises a positioning plate and an elastic element, one end of the positioning plate is in telescopic connection with the inner wall of the model accommodating cavity through the elastic element, and the other end of the positioning plate is in butt joint with the bottom of the tunnel model.

Further, the automatic projection device also comprises a marker post mechanism for detecting the position of the projection mechanism, wherein the marker post mechanism comprises a marker post plate and a marker post mounting rod, a laser penetrating hole is formed in the marker post plate, the marker post plate is mounted on the top end of the marker post mounting rod, and the marker post mounting rod is a telescopic rod.

Through the technical scheme, the utility model has the following beneficial effects:

the utility model provides a tunnel face blasting projection device which comprises a projection mechanism and a supporting mechanism, wherein the projection mechanism is rotatably arranged on the supporting mechanism through a mounting bracket, the projection mechanism is rotatably connected with the mounting through a rotating piece, a model accommodating cavity is formed in the projection mechanism, a detachable tunnel model is arranged in the model accommodating cavity, a positioning mechanism is arranged in the model accommodating cavity so as to be capable of positioning the tunnel model, and a projection light source is arranged in the projection mechanism so as to be capable of projecting the tunnel model to form a projection pattern of a blasthole section. The utility model can adjust the projection mechanism according to the actual use environment, the projection mechanism projects the tunnel model arranged in the projection mechanism so as to form a projection pattern of the blast hole section, the projection pattern is projected on the excavation section of the tunnel to be blasted, and the projection mechanism is adjusted through the mounting bracket and the rotating piece, so that the projection is more accurate, the blast hole positioning precision is ensured, in addition, the utility model has simple structure, no need of multiple people operation and manpower and material resources saving.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic view of a specific embodiment of a face blasting projection device of the present utility model;

fig. 2 is a schematic structural view of a positioning mechanism of the face blasting projection device of the present utility model.

Description of the reference numerals

1 projection mechanism 11 focus adjusting member

12. Distance detection mechanism 21 supporting platform

22. 23 jack catch structures of supporting legs

24 horizontal detection mechanism 3 installing support

4 rotation piece 5 model holds chamber

6 positioning mechanism 61 positioning plate

62 elastic element

Detailed Description

The following detailed description of the embodiments of the utility model is provided in connection with the accompanying drawings, it being understood that the embodiments described herein are for purposes of illustration and explanation only, and the scope of the utility model is not limited to the following embodiments.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "configured," "mounted," and "connected" are to be construed broadly, and for example, the connection may be a direct connection, an indirect connection via an intermediary, a fixed connection, a removable connection, or an integral connection; either directly or indirectly via intermediate connectors, or by communication between or interaction between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless otherwise indicated, directional terms such as "upper and lower" are used in terms of upper and lower parts of the respective components and "axes" are defined in terms of arrangement directions of the corresponding components provided by the present utility model, and particularly in the drawings provided by the present utility model, the directions or positional relationships used are based on those shown in the drawings for convenience of description and simplification of the description only, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model; the directional terms of the present utility model should be construed in connection with its actual installation state.

Referring to fig. 1, the utility model provides a face blasting projection device, which comprises a projection mechanism 1 and a supporting mechanism, wherein the projection mechanism 1 is rotatably installed on the supporting mechanism through a mounting bracket 3, the projection mechanism 1 is rotatably connected with the mounting through a rotating piece 4, a model accommodating cavity 5 is arranged in the projection mechanism 1, a detachable tunnel model is arranged in the model accommodating cavity 5, a positioning mechanism 6 is arranged in the model accommodating cavity 5 so as to be capable of positioning the tunnel model, a projection light source is arranged in the projection mechanism 1 so as to project the tunnel model to form a projection pattern of a blasthole section, the projection mechanism 1 is used for performing blasthole projection positioning on the tunnel excavation section to be blasthole, the supporting mechanism is used for supporting and fixing the projection mechanism 1, the projection mechanism 1 is erected on the ground through the supporting mechanism, the projection mechanism 1 is rotatably installed on the supporting mechanism through the mounting bracket 3, the projection mechanism 1 is rotatably connected with the mounting bracket 3 through the rotating piece 4, and in combination with fig. 1, the projection mechanism 1 can rotate around the axis of the mounting bracket 3 through the mounting bracket 3, wherein the axis of the mounting bracket 3 is perpendicular to the ground; the projection mechanism 1 can also rotate around the axis of the rotating member 4, wherein the axis of the rotating member 4 is parallel to the ground, it can be understood that when the projection mechanism 1 stands on the ground through the supporting mechanism, the projection is adjusted left and right through the mounting bracket 3, the projection is adjusted up and down through the rotating member 4, in order to accurately project to determine the position of the blasthole, a model accommodating cavity 5 is arranged in the projection mechanism 1, a tunnel model is detachably arranged in the model accommodating cavity 5, the tunnel model is arranged in the model accommodating cavity 5 through the positioning mechanism 6, and a projection light source is also arranged in the projection mechanism 1, the projection light source can project the tunnel model to form a projection graph of the blasthole section, the tunnel model can simulate the position of the tunnel blasthole in advance, the tunnel model is arranged in the projection mechanism 1, the projection light source projects the tunnel model onto a tunnel excavation section so as to form a projection pattern of a blasthole section, the projection mechanism 1 is adjusted so as to finish the accurate positioning of the blasthole, the effect of not damaging peripheral rocks is achieved, and the periphery of a tunnel achieves the effect of smooth blasting.

The ratio of the tunnel model to the tunnel size is 1:10, and be provided with the battery in projection mechanism 1 and be used for providing electric power to each spare part that needs electric power to support, projection mechanism 1's shell can adopt aluminum alloy material to make, and aluminum alloy material has higher hardness, has good corrosion resistance and wearability, can increase of service life, and this material quality is light, the staff of being convenient for transport.

It should be further noted that, the projection light source in the utility model is preferably an oshen lamp bead, which has brighter effect than the common light source, and has the characteristics of 230% brightness improvement and high definition; has 256 color bit depth, the light transmittance reaches 98 percent and the PI65 level waterproof function. The PI65 grade is waterproof grade, and the PI65 grade can prevent dust completely and prevent the invasion of sprayed water.

The supporting mechanism in the utility model is shown in fig. 1, and comprises a supporting platform 21 and a plurality of supporting legs 22, wherein the supporting legs 22 are telescopically arranged below the supporting platform 21, and the supporting legs 22 can rotate around the joint of the supporting legs 22 and the supporting platform 21, as shown in fig. 1, as a specific embodiment of the utility model, three supporting legs 22 are used, three supporting legs 22 are uniformly distributed below the supporting platform 21, each supporting leg 22 can telescopically adjust the length and can rotate around the joint of the supporting legs 22 and the supporting platform 21, and it is understood that the overall height of the face blasting projection device provided by the utility model can be adjusted by adjusting the telescopic length of the supporting legs 22, and the overall height can also be adjusted by adjusting the included angle between the supporting legs 22 and the supporting platform 21, when the height is required to be adjusted, the supporting legs 22 can be retracted, and the supporting legs 22 can move around the joint of the supporting legs 22 and the supporting platform 21 to a direction far away from the axis of the supporting platform 21, and when the height is required to be adjusted, the opposite operation is performed. As a preferred embodiment, the support means may preferably be a wooden tripod.

Further, in order to enable the supporting mechanism to stand on the ground more firmly, one end, far away from the supporting platform 21, of the supporting foot 22 can be provided with a claw structure 23, and the claw structure 23 can be inserted into the ground to form clamping connection with the ground, so that the device is arranged more stably.

Referring to fig. 1, as a specific embodiment of the present utility model, a horizontal detection mechanism 24 is disposed on the support mechanism, where the horizontal detection mechanism 24 can detect whether the tunnel face blasting projection device provided by the present utility model is set in a horizontal state, so as to ensure that the device maintains a balanced state during projection, and fig. 1 is a specific embodiment of the present utility model, and in addition, the setting manner of the horizontal detection mechanism 24 may also be: the lower side of the support platform 21 is perforated, and the horizontal detection mechanism 24 is connected to the support platform 21 by bolts.

Preferably, as a preferred embodiment of the level detecting mechanism 24 in the present utility model, the level detecting mechanism 24 may be a level bubble, which is a high-precision liquid level measuring system suitable for measuring multi-point relative sedimentation, and the level bubble is simple and convenient to install and easy to use.

Further, as shown in fig. 1, a distance detection mechanism 12 is provided on the projection mechanism 1, and the distance detection mechanism 12 can detect the distance that the device reaches the section of the excavation required to be blasted and the distance that the device reaches the two sides of the tunnel, so as to ensure whether the device is set in place or not, and ensure the accuracy of projection positioning.

Specifically, the laser range finder is preferably used as the distance detection mechanism 12, and is an instrument for realizing distance measurement on a target by utilizing a certain parameter of modulated laser, and has the advantages of high distance measurement efficiency, quick response, continuous distance measurement, ultra-long distance measurement, complete satisfaction of high standard measurement requirements, strong anti-interference capability, background obstacle interference elimination and false measurement avoidance.

Further, the projection mechanism 1 is further provided with a focal length adjusting member 11, and the focal length adjusting member 11 has a lens focal length adjusting function, and is capable of performing zooming and proper adjustment of the size of the projection pattern, so as to ensure the accuracy of projection.

Referring to fig. 2, as a specific embodiment of the positioning mechanism 6 in the present utility model, the tunnel model is detachably installed in the model accommodating cavity 5 through a positioning device, wherein the positioning device comprises a positioning plate 61 and an elastic element 62, one end of the positioning plate 61 is connected with the inner wall of the model accommodating cavity 5 through the elastic element 62, the other end is abutted with the bottom of the tunnel model, and the elastic element 62 pushes the positioning plate 61 to the direction of the tunnel model by using its own resilience force, so as to realize the positioning of the tunnel model, prevent the tunnel model from falling off or generating displacement during the projection process, and influence the projection precision, wherein the elastic element 62 is preferably a spring, and the spring has a simple structure and good resilience. With reference to fig. 2, as a specific embodiment, four positioning mechanisms 6 are adopted to match, so as to position the periphery of the tunnel model, and displacement is generated when the tunnel model is placed to influence the projection precision.

The device is still including being used for detecting whether the projection mechanism position is reasonable the marker post mechanism, the marker post mechanism includes marker post tablet and marker post installation pole, the marker post tablet sets up on the marker post installation pole, and stand on ground through the marker post installation pole, be provided with laser transmission hole on the marker post tablet, laser of laser range finder can pass the laser transmission hole, the main effect of marker post mechanism lies in confirming that the laser that this device sent is parallel with tunnel central line, the marker post installation pole is the telescopic link, can carry out altitude mixture control according to concrete service environment.

Specifically, in combination with the above specific embodiment, the use method of the device is that a tunnel model manufactured in advance is installed in the model accommodating cavity 5, then a transmission light source is turned on, the device is arranged at a place which is about 5m away from the excavation end face, the horizontal condition of the device is detected through a level bubble, corresponding adjustment is made, projection is carried out, the size of a projection pattern is adjusted through the focal length adjusting piece 11, the height of the projection mechanism 1 and the rotation angles of the left side, the right side, the left side and the right side are adjusted, a technician carries out ruler quantity on the projected shot hole point position in an spot checking mode after adjustment is completed, the error is controlled within 2cm, and the shot hole position mark is determined.

The utility model has simple structure, can control the accurate positioning of the position and the direction of the blasting blasthole, thereby avoiding the damage of peripheral rocks, enabling the periphery of the tunnel to achieve the effect of smooth blasting, and greatly improving the construction progress and quality.

In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "a particular implementation," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In the present utility model, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims

1. The utility model provides a face blasting projection arrangement, its characterized in that, includes projection mechanism (1) and supporting mechanism, projection mechanism (1) rotationally installs through installing support (3) on the supporting mechanism, projection mechanism (1) through rotating piece (4) with rotate between installing support (3) and be connected, projection mechanism (1) inside is provided with model and holds chamber (5), be provided with detachable tunnel model in model holds chamber (5), be provided with positioning mechanism (6) in model holds chamber (5) in order to right tunnel model location, projection mechanism (1) inside be provided with projection light source can be right the tunnel model is projected in order to form the projection figure of porthole section.

2. The face blasting projection device according to claim 1, wherein the supporting mechanism comprises a supporting platform (21) and a plurality of supporting legs (22), the supporting legs (22) are telescopically mounted below the supporting platform (21), and the supporting legs (22) can rotate around the connection of the supporting legs (22) and the supporting platform (21).

3. The face blasting projection device according to claim 2, characterized in that the end of the support foot (22) remote from the support platform (21) is provided with a claw structure (23).

4. The face blasting projection device of claim 1, wherein the support mechanism is provided with a level detection mechanism (24).

5. The face blasting projection device of claim 4, wherein the level detection mechanism (24) is a level vial.

6. The face blasting projection device according to claim 1, wherein the projection means (1) is provided with a distance detection means (12).

7. The face blasting projection device of claim 6, wherein the distance detection mechanism (12) is a laser rangefinder.

8. The face blasting projection device according to claim 1, wherein the projection mechanism (1) is provided with a focus adjustment member (11).

9. The face blasting projection device according to claim 1, wherein the positioning mechanism (6) comprises a positioning plate (61) and an elastic element (62), one end of the positioning plate (61) is telescopically connected with the inner wall of the model accommodating cavity (5) through the elastic element (62), and the other end of the positioning plate (61) is abutted with the bottom of the tunnel model.

10. The face blasting projection device of claim 1, further comprising a post mechanism for detecting the position of the projection mechanism (1), the post mechanism comprising a post plate and a post mounting post, the post plate being provided with a laser penetrating hole, the post plate being mounted on the post mounting post top, the post mounting post being a telescoping post.