CN215057354U - Tunnel construction rockburst protection trolley - Google Patents
Tunnel construction rockburst protection trolley Download PDFInfo
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- CN215057354U CN215057354U CN202120741973.6U CN202120741973U CN215057354U CN 215057354 U CN215057354 U CN 215057354U CN 202120741973 U CN202120741973 U CN 202120741973U CN 215057354 U CN215057354 U CN 215057354U
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Abstract
The utility model discloses a tunnel construction rock burst protection trolley, which comprises a frame-shaped trolley body, a first supporting device arranged at the top of the trolley body, second supporting devices arranged at the left side and the right side of the trolley body and a protective cover; the first supporting device is arranged at the front end and the rear end of the upper supporting plate, the first supporting rod comprises a supporting cylinder and a first buffer spring arranged in the supporting cylinder, and the first buffer spring is provided with an inner supporting rod inserted into the supporting cylinder; the top of the inner support rod is also provided with an arc-shaped first connecting sleeve, and the lower surfaces of the left end and the right end of the first connecting sleeve are obliquely provided with first buffer rods; the second supporting device comprises a second supporting rod, a second connecting sleeve is vertically arranged at the tail end of the second supporting rod, and a second buffer rod is arranged on the inner side wall of the second connecting sleeve. The utility model discloses can effectively promote the stability of protection platform truck and to the protective capacities of rockburst.
Description
Technical Field
The utility model relates to a tunnel blasting protector field especially relates to a tunnel construction rock burst protection platform truck.
Background
Rock burst is a common geological disaster in engineering excavation, mainly occurs in hard rocks such as granite and amphibole and in a section with great burial depth, but brittle rocks can also generate rock burst under the pressure exceeding the compressive strength within a certain range; rock burst is also called rock burst, under the action of high ground stress, a rock stress balance system in front is broken due to artificial disturbance of cavern excavation, high-level stress is accumulated at the cross section of surrounding rocks of the cavern due to stress redistribution, so that a large amount of energy is accumulated in a local area of the surrounding rocks in a short time, when the accumulated energy in the rocks greatly exceeds the energy required by rock destruction, the rock mass is subjected to strong rock block ejection destruction, and the accumulated energy is released in the form of kinetic energy, which is a very destructive geological disaster caused by dynamic instability of the surrounding rocks; after the tunnel is excavated, the rock mass is subjected to brittle failure in a short time, and the residual elastic strain energy in the rock mass is suddenly released, so that a local instability phenomenon of high-speed collapse, ejection and even throwing occurs. Particularly, the tunnel rockburst has the characteristics of contingency, paroxysmality and unpredictability, the damage to people and equipment is great, and the serious potential safety hazard is brought to the construction.
The existing protection equipment generally adopts a protection cover for protection, although the protection equipment has a certain protection effect, the stability of the protection cover is poor, for example, patent document with patent application number ZL201920099747.5 entitled rock burst protection trolley discloses a rock burst protection trolley, which comprises an excavation rack, a rack traveling system, an arch periphery protection system, a tunnel face protection system and a rock burst induction early warning system; the main platform is provided with a first sliding mechanism and a second sliding mechanism, and the excavation rack is arranged on the rack traveling system; the arch circumference protection system surrounds the two sides and the upper part of the excavation rack, and comprises an arch crown protection plate, an arch crown protection net and a side wall protection net; the vault protection plate and the vault protection net longitudinally slide on the excavation bench; the side wall protection network is connected with the excavation rack through horizontal, slant hydraulic jack, and its main protection mode utilizes hydraulic means and excavation rack to be connected for the guard plate that prevents the protection network cooperation rigidity, when large-scale rockfill violently pops out, can lead to protection casing bearing structure's not hard up, and certain potential safety hazard exists even the collapse, is unfavorable for using widely.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that actually will solve is: the existing rock burst protection is generally characterized in that a protective cover and an excavation rack are connected through a rigid piece, when a large rock block is violently popped up, a supporting structure of the protective cover is loosened or even collapsed, and certain potential safety hazards exist.
In order to solve the technical problem, the utility model provides a tunnel construction rock burst protection trolley, which comprises a frame-shaped trolley body, a first supporting device arranged at the top of the trolley body, second supporting devices arranged at the left and right sides of the trolley body, and a protective cover annularly arranged at the periphery of the trolley body, the first supporting device and the second supporting device; the vehicle body consists of an upright post, a bottom plate and an upper supporting plate and a lower supporting plate which are transversely arranged, and walking wheels are arranged below the bottom plate; the first supporting devices are arranged at the front end and the rear end of the upper supporting plate and comprise first supporting rods fixed on the upper supporting plate, each first supporting rod comprises a supporting cylinder and a first buffer spring arranged in the supporting cylinder, and each first buffer spring is provided with an inner supporting rod inserted into the supporting cylinder; the top of the inner support rod is also provided with an arc-shaped first connecting sleeve, the lower surfaces of the left end and the right end of the first connecting sleeve are obliquely provided with first buffer rods, and the first buffer rods are connected with the first connecting sleeves and first buffer plates vertically arranged on the side surfaces of the top ends of the left side stand column and the right side stand column; the second supporting devices are horizontally arranged on the left side and the right side of the front vertical rod and the rear vertical rod and comprise second supporting rods fixed on second buffer plates on the side surfaces of the vertical rods, an arc-shaped second connecting sleeve is vertically arranged at the tail end of each second supporting rod, and second buffer rods connected with the second supporting plates are obliquely arranged on the inner side walls of the upper end and the lower end of each second connecting sleeve; the protective cover sleeve is fixedly sleeved on the outer surfaces of the first connecting sleeve and the second connecting sleeve.
Particularly, the protective cover is matched with the cross section of the tunnel in size and comprises an inner layer and an outer layer, and reinforcing ribs are arranged between the inner layer and the outer layer.
Particularly, a template is further fixed on the inner surface of the second connecting sleeve, and the second buffer rod is connected with the second buffer plate through the template.
Particularly, a second buffer spring is further sleeved outside the supporting cylinder, and the top of the second buffer spring is fixedly connected with the first connecting sleeve.
In particular, the inside of the vehicle body is provided with scissors-shaped reinforcing ribs and vertical supporting columns which are connected with the upper supporting plate and the lower supporting plate.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a cooperation between the second strutting arrangement of vertical first strutting arrangement and side direction and the protection casing, in protection casing upside atress, give interior vaulting pole pressure through first adapter sleeve, at this moment the interior vaulting pole moves down and first buffer spring and second buffer spring begin to compress, cushions the impact force through buffer spring, the cooperation of the first buffer board of rethread both sides and first buffer beam side lever has promoted buffering effect, has promoted the protectiveness of platform truck.
2. The utility model discloses a curved first adapter sleeve and second adapter sleeve, can closely laminate the inside of first strutting arrangement and second strutting arrangement and protection casing, the connection effect has been promoted, the intensity of protection casing has been promoted through the strengthening rib strip, be difficult for breaking when making it receive the impact, and change the connected mode of protection casing into flexible buffering by rigid connection through first buffer spring and second buffer spring, make whole structure atress more stable, be difficult for collapsing, the protection nature of platform truck has further been promoted.
Drawings
Fig. 1 is a schematic view of the cross-sectional structure of the device of the present invention.
Fig. 2 is a schematic structural diagram of the first supporting device.
Fig. 3 is a schematic structural view of a second supporting device.
Wherein, the first supporting device-1; a first support rod-11; a first buffer spring-112; an inner stay-113; a second buffer spring-114; a first coupling sleeve-12; a first buffer rod-13; a first buffer plate-14; a second support means-2; a second support bar-21; a second connecting sleeve-22; a second buffer rod-23; a second buffer plate-24; a template-25; a protective cover-3; a reinforcing rib-31; column-4; a bottom plate-5; a support plate-6; and a support column-61.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model relates to a tunnel construction rock burst protection trolley, which comprises a frame-shaped trolley body, a first supporting device 1 arranged on the top of the trolley body, second supporting devices 2 arranged on the left and right sides of the trolley body, and a protective cover 3 annularly arranged on the periphery of the trolley body and the first supporting device 1 and the second supporting device 2; the vehicle body is composed of four upright posts 4 arranged in a square shape, a bottom plate 5 and an upper supporting plate 6 and a lower supporting plate 6 which are arranged in a transverse direction, and walking wheels are arranged below the bottom plate 5; the first supporting device 1 comprises a first supporting rod 11 fixed on the upper supporting plate 6, the first supporting rod 11 comprises a supporting cylinder and a first buffer spring 112 arranged inside the supporting cylinder, and an inner supporting rod 113 inserted into the supporting cylinder is arranged on the first buffer spring 112; the top of the inner support rod 113 is further provided with an arc-shaped first connecting sleeve 12, the lower surfaces of the left end and the right end of the first connecting sleeve 12 are obliquely provided with first buffer rods 13, and the first buffer rods 13 are connected with the first connecting sleeve 12 and first buffer plates 14 vertically arranged on the side surfaces of the top ends of the left side upright post 4 and the right side upright post 4; the second supporting devices 2 are horizontally arranged at the left side and the right side of the front upright post and the rear upright post 4, each second supporting device 2 comprises a second supporting rod 21 fixed on a second buffer plate 24 on the side surface of the corresponding upright post 4, an arc-shaped second connecting sleeve 22 is vertically arranged at the tail end of each second supporting rod 21, and second buffer rods 23 connected with the second supporting plates 24 are obliquely arranged on the inner side walls at the upper end and the lower end of each second connecting sleeve 22; the protective cover 3 is fixedly sleeved on the outer surfaces of the first connecting sleeve 12 and the second connecting sleeve 22.
As a preferred embodiment, the protective cover 3 is matched with the size of the section of the tunnel and comprises an inner layer and an outer layer, and reinforcing ribs 31 are arranged between the inner layer and the outer layer; the strength of the protective cover is improved through the reinforcing ribs 31, so that the protective cover is not easy to break when being impacted.
As a preferred embodiment, a template 25 is further fixed on the inner surface of the second connecting sleeve 22, and the second buffer rod 23 is connected with a second buffer plate 24 through the template 25; since the second support device 2 is not protected by a buffer spring, the shaping plate 25 is used to assist the lateral second support device 2, and for tunnel segments with large lateral impacts, the second support device 2 can be replaced by the first support device 1, so that more targeted and more effective protection can be achieved.
As a preferred embodiment, a second buffer spring 114 is further sleeved outside the supporting cylinder, and the top of the second buffer spring 114 is fixedly connected with the first connecting sleeve 12; because vertical impact is usually larger, the vertical impact can be better buffered by the cooperation of the second buffer spring 114 and the first buffer spring 112, and the structural stability and the protection effect are improved.
As a preferred embodiment, scissors-shaped reinforcing ribs are arranged inside the vehicle body, and a vertical supporting column 61 for connecting the upper supporting plate and the lower supporting plate 6 is further arranged.
The utility model discloses a stand 4 carries out zhuge to overall structure and becomes, through support column 61 auxiliary stay, gives the first strutting arrangement 1 a stable holding power of backup pad 6 top for it is difficult not hard up to install the sound construction, makes the atress between the stand 4 of the left and right sides more stable through scissors form strengthening rib. When protection casing 3 upside atress, transmit pressure to first bracing piece 11 through first adapter sleeve 12 of first strutting arrangement 1 to cushion vertical pressure through first buffer spring 112 and second buffer spring 114, simultaneously at this in-process, cooperate first buffer beam 13 at both ends about first adapter sleeve 12 inboard, share partial upper portion pressure to first buffer board 14, thereby play the effect of cooperation buffering vertical pressure. Meanwhile, the second buffer rod 23 arranged on the lower side of the second support rod 21 arranged laterally can also buffer the vertical pressure to a certain extent. For the impact force of the lateral rock burst, most of the pressure is guided to the second buffer plate 24 on the upright post 4 through the second support rod 21 and the second buffer rod 23 of the second support device 2, and meanwhile, the small part of the pressure is guided to the upright post 4 on the other side through the first buffer plate 13 of the first support device 1, so that the effect of buffering the impact force of the rock burst is achieved. Since the kinetic energy of a top rock burst will normally also include the gravitational potential energy of the rock, the lateral impact force will be smaller than the vertical impact force. To the great tunnel section of rockburst impact force, can change second strutting arrangement 2 for first strutting arrangement 1, play better protective effect, improve the barrier propterty and the stability of protection platform truck.
The utility model discloses "connect", "fixed" that appear in the description can be fixed connection, machine-shaping, welding, also can mechanical connection, and particular case understands that above-mentioned term is in the utility model provides a concrete meaning.
In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., are used, and their designated orientations or positional relationships are only for convenience of description and simplicity of description, but do not indicate or imply that the designated device or element must have a particular orientation, and therefore should not be construed as limiting the present invention.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. A tunnel construction rock burst protection trolley comprises a frame-shaped trolley body, a first supporting device (1) arranged at the top of the trolley body, second supporting devices (2) arranged at the left side and the right side of the trolley body, and a protective cover (3) annularly arranged on the periphery of the trolley body, the first supporting device (1) and the second supporting device (2); the vehicle is characterized in that the vehicle body consists of four upright posts (4) arranged in a square shape, a bottom plate (5) and an upper supporting plate and a lower supporting plate (6) arranged in a transverse direction, and walking wheels are arranged below the bottom plate (5); the first supporting device (1) comprises a first supporting rod (11) fixed on the upper supporting plate (6), the first supporting rod (11) comprises a supporting cylinder and a first buffer spring (112) arranged in the supporting cylinder, and an inner supporting rod (113) inserted into the supporting cylinder is arranged on the first buffer spring (112); the top of the inner stay bar (113) is also provided with an arc-shaped first connecting sleeve (12), the lower surfaces of the left end and the right end of the first connecting sleeve (12) are obliquely provided with first buffer rods (13), and the first buffer rods (13) are connected with the first connecting sleeve (12) and first buffer plates (14) vertically arranged on the side surfaces of the top ends of the left side upright post and the right side upright post (4); the second supporting devices (2) are horizontally arranged on the left side and the right side of the front and rear upright posts (4), each second supporting device (2) comprises a second supporting rod (21) fixed on a second buffer plate (24) on the side surface of the corresponding upright post (4), the tail end of each second supporting rod (21) is vertically provided with an arc-shaped second connecting sleeve (22), and the inner side walls of the upper end and the lower end of each second connecting sleeve (22) are obliquely provided with second buffer rods (23) connected with the corresponding second supporting plate (24); the protective cover (3) is fixedly sleeved on the outer surfaces of the first connecting sleeve (12) and the second connecting sleeve (22).
2. A tunnel construction rock burst protection trolley as claimed in claim 1, characterized in that the shield (3) is matched with the tunnel cross-sectional dimensions and comprises an inner layer and an outer layer, between which reinforcing ribs (31) are provided.
3. A tunnel construction rock burst protection trolley as claimed in claim 1, characterized in that a template (25) is further fixed to the inner surface of the second connecting sleeve (22), and the second buffer rod (23) is connected with the second buffer plate (24) through the template (25).
4. The tunnel construction rock burst protection trolley as claimed in claim 1, wherein a second buffer spring (114) is further sleeved outside the supporting cylinder, and the top of the second buffer spring (114) is fixedly connected with the first connecting sleeve (12).
5. A tunnel construction rock burst protection trolley as claimed in claim 1 wherein there are scissors-like reinforcement inside the trolley body and vertical support posts (61) connecting the upper and lower support plates (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120741973.6U CN215057354U (en) | 2021-04-13 | 2021-04-13 | Tunnel construction rockburst protection trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120741973.6U CN215057354U (en) | 2021-04-13 | 2021-04-13 | Tunnel construction rockburst protection trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215057354U true CN215057354U (en) | 2021-12-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120741973.6U Active CN215057354U (en) | 2021-04-13 | 2021-04-13 | Tunnel construction rockburst protection trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215057354U (en) |
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2021
- 2021-04-13 CN CN202120741973.6U patent/CN215057354U/en active Active
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