CN212030353U - Movable combined trolley for reducing damage of tunnel blasting shock waves and noise - Google Patents

Abstract

A movable combined trolley used for reducing blasting shock waves and noise hazards in tunnels relates to the technical field of tunnel and underground engineering protection. The structure of the movable combined trolley includes a load-bearing carriage, a trolley connecting device, an anti-shock panel, an elastic connecting device, a plug-in fixed pole frame and a traveling wheel. Multiple movable combined trolleys can be used in combination through the trolley connection device, and the load-bearing compartment is provided with fillers. The impact panel includes: the quilt layer for blocking shock waves and flying stones, the sound insulation layer for reducing noise, the elastic layer for buffering, and the rigid layer for fixing. The anti-impact panel is connected with the plug-in type fixed pole frame through the elastic connection device. According to the shape and height of the tunnel section, the anti-impact panel and the plug-in type fixed pole frame can be lengthened, and the anti-impact panels can also be arranged in a staggered manner. The impact panel of the movable combined trolley is arranged along the entire section of the tunnel, and is arranged in a certain length in the tunnel, so as to effectively reduce the hazards of shock waves, noise, flying stones and dust.

Description

A movable combined trolley for reducing blasting shock waves and noise hazards in tunnels

technical field

The utility model relates to the technical field of tunnel and underground engineering construction protection, in particular to a movable combined trolley for reducing blasting shock waves and noise hazards in tunnels.

Background technique

With the increase of transportation demand, especially in subway and highway construction with a large number of tunnel projects, blasting operation is an important construction method in tunnel construction. The shock waves, noise, flying stones, dust, etc. generated by the blasting will cause serious harm to the construction personnel and equipment in the tunnel, and even impact the nearby surface buildings, causing damage to the stability of the building structure. In order to reduce the harm caused by the shock wave, measures such as controlling the amount of charge and limiting the blasting operation time are generally used to control, but limiting the amount of charge has an impact on the completion of the blasting operation, and limiting the blasting operation time will also affect the construction progress, and Hazards such as shock waves, noise, flying rocks and dust remain. At present, in order to prevent the shock wave and noise generated by the explosion from propagating in narrow and long spaces such as tunnels, the existing technology mainly adopts the construction of partition walls and stacking structures to reduce the hazards of blasting shock waves and noise in the tunnel.

Patent literature includes:

Patent Document 1 (CN209011850U), discloses "a noise reduction device for tunnel blasting", the device includes a bottom bracket, a side bracket, an air cushion frame, a U-shaped groove, a muffler plate, an air cushion, an air cushion cover net, an air pump, etc. In part, the noise generated is absorbed by the muffler, and its air cushion counteracts the impact of the explosion.

Patent Document 2 (CN 109186386B), discloses "a device and method for reducing blasting noise and vibration in a tunnel", the device is arranged in a blasting blast hole, and includes a vibration reducing layer, a noise reducing layer, a spacer layer and a sealing plug. An elastic piece with an opening at one end of the vibration reduction layer is filled with air and wrapped around the outside of the noise reduction layer, and the noise reduction layer is provided with a sound-absorbing material. The sealing plug comprises multiple layers of sound-absorbing materials, a space for accommodating explosives is arranged in the noise reduction layer, and several spacer layers are arranged in the space. Therefore, the noise and vibration generated during tunnel blasting construction can be reduced, and the harm of noise and vibration to the surrounding environment can be reduced.

Patent Document 3 (CN110593920A), discloses "a temporary anti-shock support device capable of absorbing blasting vibration energy in a tunnel roadway", including a telescopic sleeve, a controller, an automatic adjustment impact-type compression device, a support base device, etc., using the roadway The impact force generated by the tunnel blasting impacts the impact baffle, so that the impact baffle can be released by adjusting the angle.

Patent Document 4 (CN110230963A), discloses "a composite protection method for anti-shock, noise-reduction, dust-proof and blasting safety in underground engineering", the steps include arranging a flying stone protective net layer on one side of the edge of the blasting area to intercept particles with a particle size larger than 300mm. Blast the flying stones. The blasting impact protection device is set at about 2-3m behind the blasting flying stone protective net layer, and is used for blasting air shock wave and noise, blasting dust protection and intercepting blasting flying stones with a particle size of less than 8mm. The method is used to effectively attenuate blasting shock wave overpressure and prevent blasting dust from overflowing into the protected area.

Patent Document 5 (CN203685222U), discloses a "silence-deadening trolley for tunnel blasting construction", which includes a frame, a traveling wheel installed under the frame, a sound-absorbing body is arranged above the frame, and the inside of the sound-absorbing box extends from the rear to the The front of the vehicle is sequentially provided with a shock wave impact buffer cavity filled with straw, a sound wave absorption buffer cavity filled with cotton wool, a sound wave absorption blocking cavity filled with sawdust, and a forced blocking wall made of wooden boards. It can be used for nighttime construction, reducing noise and improving construction efficiency.

Patent Document 6 (CN203685222U), discloses "a protective plate for preventing the composite action of explosion shock wave and debris", including an upper thin plate, a lower thin plate, a left side plate, a right side plate, a front side plate, a rear side plate and an impact resistant plate . The impact-resistant plates are set obliquely, and the polyurethane foam is mixed and evenly poured in the interval between the impact-resistant plates to prevent the composite effect of explosive fragments and shock waves.

The following problems still exist in the prior art:

(1) The construction of the partition wall is complicated, and the ventilation problem of the blasting face before and after blasting is not considered. A large amount of smoke and dust generated after blasting needs to be eliminated by the ventilation system. The existing technology adopts the method of building the partition wall and does not consider ventilation. demand, that is, the construction of the partition wall will hinder the normal ventilation of the blasting face.

(2) The method of stacking isolation construction has a small scope of application, and stacking conditions are not available in most blasting face sites. The blasted rock blocks are too large to be stacked, and there is no silty rock material for stacking. And geotechnical materials are generally difficult to form, and their impact strength is also low.

(3) The existing anti-collision device cannot be adjusted according to the size of the tunnel section, and the anti-collision device with a fixed size cannot meet the anti-collision requirements of tunnel blasting of different sections, so the applicability is poor. In addition, the existing anti-shock devices cannot be combined, and it is difficult for a single anti-shock device to effectively reduce the explosion shock wave and noise, and the anti-shock effect is poor. In addition, a single device is easily toppled or damaged by the impact of the explosion shock wave, thereby losing the anti-shock effect.

In order to reduce the hazards of blasting shock waves and noise in tunnels, the effectiveness of anti-shock devices should be considered first. The blasting sections of underground projects such as tunnels are often large, and it is difficult for a single device or a simple combination to achieve blast shock waves in the full section and within a certain length range. And noise prevention and control, the prevention and control effect brought by it is not good. Secondly, consider the technicality of the anti-shock device. During the blasting construction of tunnels and other underground projects, the blasting hazards mainly include blast shock waves, noise, flying stones, dust, etc. Among them, the blast shock waves have high speed and strong impact force. The equipment and personnel in the tunnel are strongly impacted. Noise mainly harms the personnel of the construction team in the tunnel and nearby residents. Its propagation speed is lower than that of the shock wave, and with the propagation of the shock wave, the shock wave will be converted into noise. Therefore, the key to noise prevention is to reduce the shock wave. Flying rock is collapsed along with the shock wave at the moment of explosion, and its hazard is that it will cause shock damage to the facilities adjacent to the blasting operation. It is more harmful, but its propagation distance is shorter than that of the shock wave. The hazard of dust mainly lies in the damage to the respiratory tract of personnel in the tunnel, and its prevention and control methods are mainly to block, exhaust and reduce dust. Therefore, it is difficult to take corresponding preventive measures and technologies according to the characteristics of different hazards. Finally, consideration should be given to avoid interfering with the construction of the tunnel. If the construction of the protective device takes too long, it will affect the normal blasting construction and delay the construction progress. This requires that the anti-shock device can be simply arranged, which is convenient for construction and has little influence on normal construction interference.

In order to effectively reduce the hazards of blasting shock waves, noise, flying stones and dust to personnel and equipment in the tunnel, it is necessary to improve the existing anti-shock equipment for reducing blasting shock waves and noise hazards in tunnels.

Utility model content

In order to solve the technical problems of blasting shock waves, noise, dust, etc., which are generated during blasting operations in tunnels and other underground projects, and harm the equipment and personnel in the tunnel, reduce noise and shock waves reasonably and effectively, and ensure normal ventilation at the same time. The utility model provides a movable combined trolley for reducing the hazards of tunnel blasting shock waves and noise, and the specific technical scheme is as follows.

A movable combined trolley for reducing blasting shock waves and noise hazards in tunnels, comprising a load-bearing carriage, a trolley connecting device, an anti-shock panel, an elastic connecting device, a plug-in fixed pole frame and a walking wheel; The wheels are arranged at the bottom of the load-carrying carriage, and the side of the load-carrying carriage is also provided with a trolley connecting device; the impact panel includes a quilt layer, a sound insulation layer, an elastic layer and a rigid layer. A plurality of anti-shock panels are arranged above the load-bearing carriage, and the plurality of anti-shock panels are staggered;

Preferably, a plurality of movable combined trolleys are arranged adjacently and fixedly connected by a trolley connecting device, and a trolley connecting device is provided on the side bottom of the load carriage.

Preferably, the load-carrying compartment has a cuboid box structure, wherein the upper edge of one side baffle is hinged with the load-carrying compartment body, and the filler is sand, stone or sleeper.

Preferably, a plurality of plug-in fixing rod frames are arranged on the load-bearing carriage to cooperate with the impact panel, the plug-in type fixing rod frames include cross rods, vertical rods and horizontal support rails, and the vertical rods are plugged and fixed on the load-bearing carriage. On the upper side, the horizontal bars are arranged between the vertical bars; the horizontal support rails are fixed on the load-bearing carriage.

It is also preferred that a plurality of elastic connection devices are arranged between the impact panel and the plug-in type fixing rod frame, the elastic connection devices include a high-strength spring and a mounting seat, and the mounting seats at both ends of the high-strength spring are respectively connected with the impact panel and the plug-in mount. Connected to the fixed rod frame fixed.

It is also preferred that the gun quilt layer, the sound insulation layer, the elastic layer and the rigid layer of the impact panel are closely attached in sequence, the gun quilt layer is made of rubber material to resist shock waves and flying stones, and the gun quilt layer is hung on the sound insulation. The sound insulation layer is made of high-density sound insulation board to eliminate noise, and the sound insulation layer and the elastic layer are fixedly connected; the elastic layer is made of wire spring to buffer the impact of flying stones and shock waves, and buffer the high-density sound insulation board The rigid layer is made of steel plate material to support the impact panel.

It is also preferred that the bottom of the rigid layer is provided with a pulley, and the pulley slides along the horizontal support track; the quilt layer, the sound insulation layer and the elastic layer are all provided with threaded holes, and the surface of the rigid layer is also fixedly provided with a plurality of bolts. .

It is also preferable that the blanket layer, the sound insulating layer and the elastic layer are provided with multiple layers, respectively.

The utility model provides a movable combined trolley for reducing tunnel blasting shock waves and noise hazards, and its beneficial effects include:

(1) The movable combination trolley can be moved at will, and the combination trolleys can be used in combination at will. The plug-in fixed rod frame of the movable combined trolley can also be lengthened according to the size of the section, so as to arrange the corresponding anti-impact panels, so that the movable combined trolley can form a block in the height direction of the section. In addition, multiple combined trolleys side by side along the width direction of the roadway can form a block in the width direction of the section, and multiple combined trolleys side by side along the length of the roadway can reduce the damage of shock waves and noise within a certain length range.

(2) The load-bearing compartment of the movable combined trolley can resist the shock wave by increasing the weight of the filler, and the shock-proof panel is connected with the elastic connecting device to buffer the shock-proof panel and avoid shock waves and flying stones from damaging the shock-proof panel. The sound insulation layer of the panel.

(3) This method uses a movable combined trolley to facilitate construction and blasting at different positions in the tunnel, and the loading and unloading of the filling in the load-bearing compartment is convenient; the combination of the trolley connecting device and the elastic connecting device of the movable combined trolley is easy to install .

Description of drawings

Figure 1 is a schematic structural diagram of a movable combined trolley for reducing blasting shock waves and noise hazards in tunnels;

Fig. 2 is the partial structure schematic diagram of the anti-shock panel;

Fig. 3 is the sectional schematic diagram of the A-A direction of the movable combination trolley;

Fig. 4 is the sectional schematic diagram of the B-B direction of the movable combination trolley;

5 is a schematic top view of a movable combined trolley;

Fig. 6 is the schematic diagram of the installation structure of the movable combined trolley of Fig. on the roadway section;

7 is a schematic diagram of the installation structure of the movable combined trolley in the direction of the roadway;

8 is a top view of a movable combined trolley of another combination of impact panels;

FIG. 9 is a plan view of the combined trolley after connection.

In the picture: 1- Load carriage, 2- Trolley connection device, 3- Anti-shock panel, 4- Elastic connection device, 5- Plug-in fixed pole frame, 6- Walking wheel, 7- Blasting face;

11-front bezel; 12-rear bezel; 13-left bezel; 14-right bezel; 15-bottom plate;

21 - connecting rod, 22 - fixing hook;

31- gun quilt layer, 32- sound insulation layer, 33- elastic layer, 34- rigid layer, 35- pulley;

41-high-strength spring, 42-mounting seat;

51-cross bar, 52-vertical bar, 53-horizontal bracket track.

Detailed ways

With reference to FIGS. 1 to 9 , the specific implementation of a movable combined trolley for reducing blasting shock waves and noise hazards in tunnels provided by the present invention will be described.

The specific structure of a movable combined trolley for reducing blasting shock waves and noise hazards in tunnels includes a load-bearing carriage 1, a trolley connecting device 2, an anti-shock panel 3, an elastic connecting device 4, a plug-in fixed rod frame 5 and traveling wheels. 6. The various components of the combined trolley are combined. The anti-shock panel 3, the elastic connection device 4 and the plug-in fixed rod frame 5 cooperate to eliminate the shock wave and noise, and the traveling wheels are provided with flexible movement as a whole, and the trolley is connected. The device 2 facilitates the combination of trolleys, and multiple trolley combinations can be used in tunnels of multiple sizes and types.

Among them, the load-bearing compartment 1 of the movable combined trolley has built-in fillers to ensure the stability of the trolley; the traveling wheels 6 are arranged at the bottom of the load-bearing compartment to facilitate the movement of the trolley; The trolley is used in combination. The impact panel 3 includes a quilt layer 31, a sound insulation layer 32, an elastic layer 33 and a rigid layer 34, each layered combination is used to eliminate shock waves, noise and impact force; the rigid layer 34 of the impact panel is connected by elastic connection means and plug The elastic connecting device 4 can effectively buffer the displacement of the impact panel. A plurality of anti-shock panels 3 may be arranged above the load-carrying carriage 1, and the plurality of anti-shock panels 3 are arranged in a staggered manner, which can block the transmission of shock waves and noise, and can also ensure normal ventilation in the tunnel. The plug-in type fixed rod frame 5 can be extended to adjust the installation height of the anti-shock panel 3, so as to adapt to the use of different cross-sectional sizes.

A plurality of movable combined trolleys are arranged adjacently and fixedly connected by a trolley connecting device 2 , and a trolley connecting device 2 is provided on the side bottom of the load carriage 1 . When connecting a plurality of movable combined trolleys, the number of movable combined trolleys side by side in the tunnel width direction is determined according to the width dimension of the tunnel section, and each movable combined trolley is fixed by the trolley connection device 2 . The trolley connecting device 2 may include a connecting rod 21 and a fixing hook 22. The connecting rod 21 is connected with a fixed bearing on any side of the load-bearing carriage. The connecting rod 21 can rotate along a fixed axis. The opposite side of the load-bearing carriage where the connecting rod 21 is provided is fixedly welded. There are fixing hooks 22 . When in use, the connecting rod 21 on one of the movable combination trolleys is rotated, and then the connecting rod is connected and fixed with the fixing hook 22 on the other adjacent movable combined trolley. A connecting rod 21 and a fixing hook 22 are respectively arranged on the front and rear sides or the left and right sides of the trolley, so that the connection in all directions of the front, rear, left, and right directions of the movable combined trolley can be realized. In addition, two or more identical connecting rods 21 may be arranged on the same side, and two or more identical fixing hooks may be arranged on the other side, so as to further strengthen the connection.

The load-carrying carriage 1 is a cuboid-shaped box structure, wherein the upper edge of one side baffle is hinged with the load-bearing carriage body, and the filler is sand, stone or sleeper. The load-carrying compartment 1 is specifically a flat cuboid structure with a hollow interior, including a front baffle 11 , a rear baffle 12 , a left baffle 13 , a right baffle 14 and a bottom plate 15 . The load-bearing compartment 1 uses front, rear, left, right, upper , The bottom six steel plates with a certain thickness are made, and the upper edge of any one of the front, rear, left, and right steel plates is hinged with the upper steel plate of the load-bearing compartment, so that the side baffle can be easily opened. When the load carriage 1 is empty, the movable combination trolley can be moved easily. Opening the side baffle can put sand, stones and other fillers into the load-bearing carriage 1, so that the load-bearing carriage 1 has a certain weight and ensures the stability of the movable combined trolley.

The plug-in type fixed rod frame 5 is a steel frame structure that can be extended, and a plurality of plug-in type fixed rod frames 5 are arranged on the load-carrying carriage 1 to cooperate with the anti-shock panel 3 . Among them, the shock-proof panel 3 , the elastic connection device 4 and the plug-in type fixing rod frame 5 are combined and connected structures to reduce shock waves and noises together. The anti-shock panels can be arranged in 2 rows, 2 anti-shock panels in the front row, and 1 anti-shock panel in the rear row. Two impact panels can also be arranged in the front and rear rows, and the impact panels are staggered. The impact panel 3 and the upper surface of the truck 1 may be arranged at a right angle or a shape close to a right angle.

The plug-in type fixed rod frame 5 can provide rigid support for the impact panel, wherein the plug-in type fixed rod frame 5 includes a horizontal rod 51, a vertical rod 52 and a horizontal support rail 53, and the vertical rod 52 is plugged and fixed on the load-bearing carriage 1, The horizontal bars 51 are arranged between the vertical bars 52 . The horizontal rod 51, the vertical rod 52 and the horizontal support rail 63 are made of rigid materials, which can be steel, cast iron, alloy and other materials. The lower end of the vertical rod 52 can be inserted into the load-bearing compartment, and corresponding holes and grooves can be set on the load-bearing compartment 1 to cooperate with the vertical rod. The horizontal rod 51 is fixed between the two vertical rods. The rail 53 is for the convenience of the impact panel force buffering. The horizontal support rail 53 can be fixed on the load-carrying carriage. Specifically, one end is welded to the vertical rod, and the whole is welded to the upper surface of the load-bearing carriage 1 . A reinforcing rib can also be welded between the plug-in type fixed rod frame 5 and the load-bearing carriage 1 to reinforce the plug-in type fixed rod frame. In order to obtain a better anti-shock effect, the combined structure of the plug-in fixing rod frame 5 and the anti-shock panel 3 can be arranged in a staggered manner. The upper ends of the vertical rods 52 are provided with insertion holes, so as to facilitate the insertion and combination of the vertical rods.

The elastic connection device 4 effectively buffers the impact panel and is affected by the shock wave. Multiple elastic connection devices can be arranged between the shock-proof panel 3 and the plug-in fixing rod frame 5, and the installation of the multiple elastic connection devices 4 is determined according to the arrangement of the cross bars. Location. The elastic connection device 4 includes a high-strength spring 41 and a mounting seat 42 , and the mounting seats at both ends of the high-strength spring 41 are respectively fixed to the anti-impact panel 3 and the plug-type fixing rod frame 5 . One of the mounting seats 42 is fixed with the rigid layer of the impact panel 3 by bolts, and the other mounting seat and the cross bar are fixed by bolts. The number of the elastic connecting devices 4 can be set according to the density of the cross bars, and the elastic connecting devices 4 are arranged as evenly as possible on the side of the anti-impact panel 3 so as to provide even buffering.

The quilt layer 31 , the sound insulation layer 32 , the elastic layer 33 and the rigid layer 34 of the impact panel 3 are in close contact with each other in order to eliminate the harm of shock waves and noise. The gun quilt layer 31 is made of rubber material to resist shock waves and flying stones. The gun quilt layer is hung on the sound insulation layer. The gun quilt layer is the first to resist the flying stones and shock waves generated by the explosion. Considering that it is easy to damage, it is hung and arranged. On the sound insulation layer, it is convenient to disassemble and replace. The sound insulation layer 32 is made of high-density sound insulation board to eliminate noise, and the sound insulation layer and the elastic layer are fixedly connected. The elastic layer 33 is made of wire springs to buffer the impact of flying stones and shock waves, and buffer the force of the high-density sound insulation board, especially to protect the high-density sound insulation board from structural damage caused by stress concentration. The rigid layer is made of steel plate material, and has a certain size to facilitate the installation of other layers. The rigid layer is used to support the impact panel and is the skeleton of the entire impact panel. The bottom of the rigid layer 34 is provided with a pulley 35, the pulley slides along the horizontal support track, and the impact-proof panel moves in the direction of the impact after being impacted. The quilt layer 31, the sound insulation layer 32 and the elastic layer 33 are all provided with threaded holes, and a plurality of bolts are fixed on the surface of the rigid layer, and the threaded holes are provided with bolts for connecting each layer of the impact panel. The gun quilt layer 31, the sound insulation layer 32 and the elastic layer 33 can be respectively provided with multiple layers. Specifically, the gun quilt layer can be provided with 2 layers and arranged in an overlapping manner. The sound insulation layer and the elastic layer are fixed together, and the sound insulation layer, elastic layer, The sound insulation layer and the elastic layer can also be arranged according to the needs of impact resistance.

The traveling wheel 6 is used for the movement of the combined trolley, and the entire trolley moves flexibly. The traveling wheel 6 also has a self-locking device. When the combined trolley moves to the designated position, the self-locking device is opened, and the traveling wheel 6 is fixed to make the trolley. fixed.

In order to further illustrate the use method and beneficial effect of the movable combination trolley, a method for reducing the shock wave and noise hazard of tunnel blasting by using the movable combination trolley is described. Using the above movable combination trolley, the steps include:

Step 1. Pull the movable combined trolley to the blasting face in the tunnel, and add filler in the load-bearing carriage.

The movable combined trolley can be moved to a certain distance from the blasting face, and then moved to the designated position and then filled with materials such as sand and stones in the load-bearing compartment to ensure the stability of the movable trolley.

Step 2. Arrange the rigid layer, the elastic layer, the sound insulation layer and the gun quilt layer in sequence to assemble the anti-impact panel, fix the anti-impact panel on the plug-in fixing rod frame through the elastic connecting device, and the pulley is clamped in the horizontal bracket track.

Step 3. According to the height of the cross section where the movable trolley is located, lengthen the horizontal bar and vertical bar of the plug-in fixed pole frame, and install the impact panel corresponding to the height of the plug-in fixed pole frame.

The elastic connecting device connects the impact panel and the plug-in fixed pole frame together, and according to the size of the tunnel section, multiple groups of impact panels are staggered in the height and horizontal direction to form the protection of the full section of the tunnel. Most of the tunnels are semi-circular arches and have a high section height. According to the height between the upper surface of the load-carrying carriage and the tunnel roof, a corresponding number of anti-shock panels are installed.

Step 4. Arrange a plurality of movable combined trolleys according to the width of the cross section where the movable trolley is located, and fix each combined trolley in parallel through the trolley connecting device to form a full-section shock wave and noise protection curtain wall.

After the position of the movable combined trolley is fixed, open the self-locking device of the traveling wheel to fix the position of the trolley.

Step 5. Arrange multiple protective curtain walls along the length of the tunnel. The setting of multi-layer protective curtain walls can effectively prevent shocks.

The movable combined trolleys arranged along the length direction of the tunnel are also fixed by the trolley connecting device. Multiple trolleys on the front, back, left, and right are connected together by rigid connecting devices, and the anti-shock trolleys are combined to form a multi-layer protective curtain wall. On the basis of protecting the full section of the tunnel, it is also effectively anti-shock within a certain length range, effectively reducing blast shock waves. , noise, flying stones and dust hazards to personnel and equipment in the tunnel.

Step 6. Construction blasting. The blasting shock wave generated by the blasting face first reaches the anti-shock panel, and the shock-proof panel is subjected to shock pressure to generate shock displacement. The elastic connecting device forms a buffer for the shock pressure, and the noise generated by blasting is also eliminated by the shock-proof panel. The flying stones produced by blasting are blocked by the cannon of the anti-shock panel, and the dust generated by blasting is blocked by the anti-shock panel within the section range.

Specifically, the blast shock wave generated by the blasting face first reaches the position of the movable combined trolley, and multiple anti-shock panels with different heights, front and rear, and left and right staggered arrangements resist the shock wave in turn. The shock wave pressure and shock displacement are generated, and the elastic connection device behind the shock panel effectively acts as a buffer; the accompanying noise will also be blocked by the shock panel, which is eliminated by the built-in high-density sound insulation board of the shock panel. Noise; after that, the flying stones generated by the explosion reached the location of the anti-shock trolley, and the flying stones of different sizes were blocked by the cannon of the anti-shock panel and fell on the self-weight carriage of the trolley; finally, the explosion produced The dust reaches the position of the movable combined trolley, and the impact panel arranged on the whole section can also effectively prevent the dust from spreading.

Step 7. Release the fixing of the trolley connection device between the movable combined trolleys, clean the flying stones and dust above the load-carrying carriage, and pull out each movable combined trolley.

Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples, and changes, modifications, additions or replacements made by those skilled in the art within the essential scope of the present invention are also It should belong to the protection scope of the present invention.

Claims (8)

1. A movable combined trolley for reducing tunnel blasting shock wave and noise hazard is characterized in that, comprising a load-bearing carriage, a trolley connecting device, an anti-shock panel, an elastic connecting device, a plug-in fixed pole frame and a traveling wheel; The load-bearing compartment has built-in filler, the traveling wheels are arranged at the bottom of the load-bearing compartment, and the side of the load-bearing compartment is also provided with a trolley connection device; The rigid layer is connected with the plug-in type fixed rod frame through an elastic connection device; a plurality of anti-shock panels are arranged above the load-bearing carriage, and the plurality of anti-shock panels are arranged in a staggered manner; the plug-in type fixed rod frame is lengthened, with To adjust the installation of the impact panel. 2. A movable combined trolley for reducing tunnel blasting shock waves and noise hazards according to claim 1, wherein a plurality of movable combined trolleys are adjacently arranged and fixedly connected by a trolley connecting device, the said A trolley connecting device is arranged on the side bottom of the load-bearing carriage. 3. A movable combined trolley for reducing tunnel blasting shock waves and noise hazards according to claim 1, wherein the load-carrying carriage is a cuboid box structure, wherein the upper edge of one side baffle is connected to the The body of the load-bearing carriage is hinged, and the filling is sand, stone or sleepers. 4. A movable combined trolley for reducing tunnel blasting shock waves and noise hazards according to claim 1, wherein a plurality of plug-in fixed rod frames are arranged on the load-bearing carriage to cooperate with the shock-proof panel, The plug-in type fixed rod frame includes a cross rod, a vertical rod and a horizontal support rail, the vertical rod is plugged and fixed on the load-bearing carriage, and the cross rod is arranged between the vertical rods; the horizontal support rail is fixed on the load-bearing carriage. 5 . The movable combined trolley for reducing tunnel blasting shock waves and noise hazards according to claim 4 , wherein a plurality of elastic connection devices are arranged between the shock-proof panel and the plug-in fixed rod frame. 6 . , the elastic connecting device includes a high-strength spring and a mounting seat, and the mounting seats at both ends of the high-strength spring are respectively fixed with the anti-shock panel and the plug-type fixing rod frame. 6 . The movable combined trolley for reducing tunnel blasting shock waves and noise hazards according to claim 1 , wherein the quilt layer, the sound insulation layer, the elastic layer and the rigid layer of the shock-proof panel are in close contact with each other successively. 7 . The gun quilt is made of rubber material to resist shock waves and flying stones, and the gun quilt is hung on the sound insulation layer; the sound insulation layer is made of high-density sound insulation board to eliminate noise, and the sound insulation layer and the elastic layer are fixed connection; the elastic layer is made of wire spring to buffer the impact of flying stones and shock waves, and to buffer the force of the high-density sound insulation board; the rigid layer is made of steel plate material to support the impact panel. 7. The movable combined trolley for reducing tunnel blasting shock waves and noise hazards according to claim 6, wherein the bottom of the rigid layer is provided with a pulley, and the pulley slides along a horizontal support track; The layer, the sound insulation layer and the elastic layer are all provided with threaded holes, and a plurality of bolts are also fixedly arranged on the surface of the rigid layer. 8 . The movable combined trolley for reducing tunnel blasting shock waves and noise hazards according to claim 6 , wherein the gun quilt layer, the sound insulation layer and the elastic layer are respectively provided with multiple layers. 9 .

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