Dust removal equipment for tunnel construction

Abstract

Dust removal equipment for a tunnel relates to the technical field of dust removal devices and comprises a power module, a bottom plate, wheels, a multi-angle dust collection mechanism, a filtering mechanism, a rotary connection mechanism, a control circuit and a detection circuit. The bottom plate, the wheels, the multi-angle dust collection mechanism, the filtering mechanism and the rotary connecting mechanism are mounted together, and the power module, the control circuit and the detection circuit are mounted in the electric cabinet; the multi-angle dust collection mechanism comprises a motor, a heat dissipation impeller, an air blowing impeller, an electric linear sliding table, a dust collection cover, a frame body, a driving gear, a driven gear and a dust collection pipe. The rotating connection mechanism comprises a bearing A, a sleeve and a branch pipe. The working face for absorbing dust is relatively large, a better dust absorption effect can be achieved, a worker can be prompted to clean the filter screen after the filter screen is blocked, stable and reliable work of equipment is guaranteed, trace dust contained in air filtered by the filter screen can be adsorbed through water, the amount of dust discharged into the air is reduced, and the service life of the equipment is prolonged. And the respiratory tract health of workers is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of dust removal devices, in particular to dust removal equipment for tunnel construction. Background Art

[0002] Tunnel construction generates significant amounts of dust. Due to poor ventilation, breathing this dust can negatively impact workers' respiratory health. Existing technologies typically install dust collection equipment in designated areas to manage the dust, which, to some extent, mitigates the adverse effects of dust on worker health.

[0003] With the advancement of industrial technology, the functions of tunnel dust collection equipment have become increasingly sophisticated. For example, Chinese patent number "202420382705.3," titled "High-efficiency Dust Collection Device for Tunnel Construction," states that "the entire device is movable through the cooperation between the base and universal wheels, the collection device is configured to absorb air and dust, and the removal device is configured to filter the air and dust absorbed by the collection device. The air is filtered and the filtered dust is collected simultaneously, preventing the dust from floating again and affecting construction and worker health." As can be seen from the above, while the comparative patent addresses the shortcomings of the prior art to some extent, it still suffers from structural and functional limitations, including the following technical issues. First, the dust collection head (collection hood) is fixed, meaning that it can only collect dust in one direction during operation, resulting in a relatively small dust removal range and inadequate dust collection. Second, it lacks a filter clogging indicator. During actual operation, clogged filter holes will affect the device's dust collection function, reducing the dust collection effect and also failing to achieve optimal dust collection results. Third: The air after filtering is discharged directly into the atmosphere. The amount of dust in the discharged air is relatively large, which will more or less have an adverse effect on the respiratory health of the workers. Summary of the Invention

[0004] In order to overcome the drawbacks of the existing dust collection mechanism for tunnel construction due to structural limitations as described in the background technology, the present invention provides a dust removal device for tunnel construction that can, under the joint action of relevant mechanisms, enable the dust collection hood to circulate uninterruptedly in the up, down, left, right and circumferential directions to perform dust collection operations. The dust collection operation surface is relatively large, which can achieve a better dust collection effect. When the filter is clogged, the staff can be prompted to clean the filter in time, thereby ensuring stable and reliable dust collection operation of the equipment. The dust can be adsorbed by water in the trace dust contained in the air after being filtered by the filter, thereby reducing the amount of dust discharged into the air and ensuring the respiratory health of the staff as much as possible.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A dust removal device for tunnel construction, comprising a base plate, wheels, and a multi-angle dust suction mechanism, a filtering mechanism, a rotating connection mechanism, a control circuit and a detection circuit; there are multiple wheels, and the multiple wheels are respectively mounted on the lower end of the base plate; the multi-angle dust suction mechanism comprises a motor, a heat dissipation impeller, a blower impeller, an electric linear slide, a dust suction hood, a frame, a driving gear, a driven gear, and a dust suction pipe, the lower end of the frame is fixedly mounted on the front end of the base plate, the rotating shaft of the motor is respectively located outside the front and rear ends of its shell, the heat dissipation impeller and the blower impeller are respectively fixedly mounted outside the front and rear ends of the motor rotating shaft, the front and rear ends of the motor shell are respectively mounted with a cover, the front end of the motor rotating shaft rotates and is located in the middle of the front end cover, the driving gear is fixedly mounted on the front end of the motor rotating shaft, the upper part and the middle part of the rear side of the cover at the rear end of the motor are respectively fixed with an intake pipe and an exhaust pipe, and the front side of the motor front end cover has a plurality of air inlet holes; the motor is fixedly mounted on the side end of the frame, and the dust suction pipe The cam is fixedly mounted on the other side of the frame, and the driven gear is fixedly mounted on the outside of the dust suction pipe, and the front end of the dust suction pipe is fixedly mounted with a ventilation pipe, and the front end of the dust suction pipe is fixedly mounted on the rear end of the shell of the electric linear slide, and a guide groove is vertically distributed on one side of the shell of the electric linear slide, and one end of the sliding block of the electric linear slide has an opening, and the rear end of the dust suction hood is fixedly mounted with a connecting pipe, and the outside of the connecting pipe is fixedly mounted in the opening of the sliding block, and the dust suction surface of the dust suction hood is located at the front end, and the rear end of the connecting pipe and the ventilation pipe are connected through a hose with a length margin; the rotating connection mechanism includes a sleeve and a branch pipe, the front end of the branch pipe is fixedly mounted on the rear end of the sleeve, and the rear end of the dust suction pipe is rotatably mounted in the front end of the sleeve, and the rear end of the branch pipe and the rear side of the exhaust pipe are respectively fixedly connected in parallel with the upper air inlet pipe of the filter mechanism, and the lower end of the filter cartridge of the filter mechanism is fixedly mounted on the rear end of the base plate; the control circuit and the detection circuit are installed in the electric control box, and the electric control box is fixedly mounted on one end of the base plate.

[0006] Furthermore, a push handle is fixedly installed on the rear end of the base plate.

[0007] Furthermore, there is a gap between the rear inner side of the motor front end cover and the motor front end shell, and a sealed structure is formed between the front inner side of the motor rear end cover and the motor rear end shell.

[0008] Furthermore, the driving gear and the driven gear are meshed, and the number of teeth of the driving gear is less than the number of teeth of the driven gear.

[0009] Furthermore, the filtering mechanism includes an upper air inlet pipe, a filter cartridge, a filter screen ring, and a valve. A movable door is installed on one side end of the filter cartridge. There are at least two support rings spaced apart in the upper and lower parts of the filter cartridge. There are at least two filter screens, and the two filter screens are respectively arranged on the two support rings. The lower end of the upper connecting pipe is fixedly installed on the outside of the upper end of the filter cartridge. An exhaust pipe is installed on the side end of the filter cartridge below the opening, and one end of the valve is fixedly installed on the outside of the lower end of the filter cartridge.

[0010] Furthermore, between the two filter screens of the filtering mechanism, the aperture of the upper filter screen is larger than the aperture of the lower filter screen from top to bottom, and a rubber ring is fixedly installed on the upper outer end of the filter screen, and the rubber ring and the inner side of the filter cartridge are in a sealed contact structure; the lower part of the filter cartridge is filled with water, and the upper end of the waterline is located at the lower end of the exhaust pipe.

[0011] Furthermore, the control circuit includes two sets of electrically connected time-controlled switches, and the power input ends of the two sets of time-controlled switches are respectively connected.

[0012] Furthermore, the detection circuit includes an electrically connected resistor, a light-emitting diode, a phototransistor, a transistor, an alarm, and a capacitor. One end of the first resistor is connected to one end of the second resistor, one end of the third resistor, and the positive power supply input end of the alarm. The other end of the first resistor is connected to the positive pole of the light-emitting diode, the other end of the second resistor is connected to the collector of the phototransistor, the emitter of the phototransistor is connected to the positive pole of the capacitor and one end of the fourth resistor, the other end of the fourth resistor is connected to the base of the first transistor, the collector of the first transistor and the base of the second transistor, the other end of the third resistor is connected, the collector of the second transistor is connected to the negative power supply input end of the alarm, the emitters of the two transistors are connected to the negative pole of the capacitor and the negative pole of the light-emitting diode, and the light-emitting diode and the phototransistor are fixed face to face on both sides of the upper end of the filter cartridge.

[0013] Compared with the prior art, the present invention has the following advantages: (1) the motor of the present invention can not only drive the dust hood and the like to rotate in the circumferential direction, but also generate negative pressure for the filter mechanism at the same time, so that the dust from the outside can enter the filter mechanism through the dust hood, achieving the purpose of one machine with two uses, saving installation space, and reducing costs (no need to use a set of motors to generate negative pressure and drive the dust hood and the like to rotate). When working, the motor and the driving gear and the driven gear work together, and the control circuit can control the electric linear slide to make the dust hood circulate uninterruptedly up and down, left and right, and in the circumferential direction to perform dust collection operations. In this way, the dust collection operation surface is relatively large, which can achieve better dust collection effect; (2) under the action of the detection circuit, etc., when the filter is blocked, the alarm can be sounded in time to remind the staff to clean the filter, ensuring stable and reliable dust collection operation of the equipment; (3) when the filter mechanism is working, the dust in the air can be filtered, and the trace dust contained in the air after the filter is filtered by the filter can be adsorbed by water, reducing the amount of dust discharged into the air and ensuring the respiratory health of the staff as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention.

[0016] Figure 2 、 3It is a partial plan view of the present invention.

[0017] Figure 4 It is a circuit diagram of the present invention. DETAILED DESCRIPTION

[0018] Figure 1 、 2, 3, and 4, a dust removal device for tunnel construction includes a power module T1, a power switch S1, a base plate 1, and wheels 2. It also has a multi-angle dust suction mechanism, a filtering mechanism, a rotating connection mechanism, a control circuit 6, and a detection circuit 7; there are four wheels 2, and the upper ends of the frames of the four wheels 2 are respectively fixedly mounted on the lower ends of the four sides of the base plate 1; the multi-angle dust suction mechanism includes a motor M, a heat dissipation impeller 31, a blower impeller 32, an electric linear slide M1, a dust cover 33, a frame 34, a driving gear 35, a driven gear 36, and a dust suction pipe 37. The lower end of the frame 34 is fixedly mounted on the middle part of the front end of the base plate 1, and the rotating shaft of the motor M is respectively located outside the front and rear side ends of its shell. The heat dissipation impeller 31 (for heat dissipation of the motor shell) The blower impeller 32 is fixedly mounted on the front and rear ends of the motor M shaft, respectively. A cover 38 is installed on the front and rear ends of the motor M housing, and a bearing 39 is fixedly mounted on the front middle part of the front cover 38. The front middle part of the motor M shaft is located in the inner ring of the bearing 39. The driving gear 35 is fixedly mounted on the front end of the motor M shaft. An air intake pipe 381 and an exhaust pipe 382 are fixedly mounted on the upper part and the middle part of the rear side of the cover 39 at the rear end of the motor M, respectively. The front side of the front cover of the motor M has a plurality of air intake holes (external air can enter the front cover to dissipate heat for the motor housing); the motor M is fixedly mounted on the middle part of the right end of the frame 34, and a shaft is fixedly mounted on the upper side of the front and rear parts of the left end of the frame 34. Bearing B341, the two sides of the outer middle part of the dust suction pipe 37 are fixedly installed in the inner rings of the two bearings B341, and the driven gear 36 is fixedly installed on the outer side of the dust suction pipe 37 between the front and rear parts of the left end of the frame 34. A ventilation pipe 371 that communicates with its interior is fixedly installed at the lower end of the dust suction pipe at the front end of the frame 34. The front side end of the dust suction pipe 37 is sealed and fixedly installed in the middle of the rear outer end of the shell of the electric linear slide M1. A guide groove 8 is vertically distributed from top to bottom at the left end of the rear side of the shell of the electric linear slide M1. The sliding block 9 of the electric linear slide M1 is a hollow structure and has an opening distributed front and back in the middle of its left end. A connecting pipe 331 is fixedly installed at the rear end of the dust cover, and the outer side of the connecting pipe 331 is fixedly installed on the sliding block 9 In the central opening, the dust collection surface of the dust collection hood 33 is located at the front end, and the rear end of the connecting pipe 331 and the ventilation pipe 371 are sealed and fixedly connected via a hose 10 with a length margin; the rotating connection mechanism includes a bearing A51, a sleeve 52, and a branch pipe 53. The bearing A51 is fixedly installed in the front end of the sleeve 52, and the front end of the branch pipe 53 is fixedly and sealedly installed at the rear end of the sleeve 52 and communicates with the inside of the sleeve 52. The rear end of the dust collection pipe 37 is fixedly installed in the inner ring of the bearing A51, and the rear end of the branch pipe 53 and the exhaust pipe 382 are respectively fixedly connected to the first end and the second end of a three-way pipe. The lower end of the filter cartridge 41 of the filter mechanism is fixedly installed on the rear middle part of the bottom plate 1, and the third end of the three-way pipe is fixedly connected to the upper air inlet pipe 42 of the filter mechanism via a pipe.The power module T1, power switch S1, control circuit 6, and detection circuit 7 are installed in an electric control box 11, which is fixedly mounted on the left rear end of the base plate 1.

[0019] Figure 1 、 2As shown in Figures 3 and 4, a push handle 101 is fixedly installed on the left and right sides of the rear end of the base plate 1 (to facilitate manual pushing of the device to move its position). A sealing ring is installed on the front and back sides between the inner and outer rings of the bearing A51 (to prevent air from entering the cylinder and escaping). There is a gap between the rear inner side of the front end cover 38 of the motor and the front end housing of the motor M to facilitate heat dissipation and air circulation of the motor M. The front inner side of the rear end cover 38 of the motor and the rear end housing of the motor M are sealed. The driving gear 35 and the driven gear 36 are meshed, and the number of teeth on the driving gear 35 is less than that on the driven gear 36. The filtering mechanism includes an upper air inlet pipe 42, a filter cartridge 41, a filter screen ring 43, and a drain valve 44. There is an arc-shaped opening on the upper left end of the filter cartridge 41, and an arc-shaped movable door 45 is hingedly installed on the outer end of the opening (when the movable door 45 is closed, the front end of the opening is sealed, and the movable door can be opened to add water and remove the filter screen for cleaning). There are two hollow annular support rings 411 at an upper and lower interval in the filter cartridge 41, and there are two filter screens 43. The two filter screens 43 are respectively arranged on the upper part of the two support rings 411. The lower end of the upper connecting pipe 42 is fixedly mounted on the outside of the upper end of the filter cartridge 41 and communicates with the inside of the filter cartridge 41. An exhaust pipe 46 communicating with its interior is installed at the rear end of the filter cartridge below the opening (discharging the air after filtering the dust to the outside). The front end of the valve 44 is fixedly mounted on the middle of the rear lower end of the filter cartridge, and the front end of the valve 44 is communicated with the inside of the filter cartridge 41 (the valve can be opened to discharge the dirty water in the filter cartridge, and then the valve can be closed to add clean water again). The pore size of the upper filter 43 is larger than that of the lower filter 43, extending from top to bottom. A rubber ring is fixed to the upper outer end of each filter 43, creating a sealed contact with the inside of the filter cartridge 41 (preventing unfiltered, dust-laden air from flowing downward). Water is contained within the lower portion of the filter cartridge 41, with the upper end of the water line located at the lower end of the exhaust pipe 46. The control circuit includes two sets of time-controlled switches, T2 and T3, connected via circuit board wiring. The power input terminals 1 and 2 of the two time-controlled switches, T2 and T3, are connected, respectively.The detection circuit includes resistors R1, R2, R3, R4, a light-emitting diode RL, a phototransistor Q1, transistors Q2, Q3, an alarm B, and a capacitor C1 connected via circuit board wiring; one end of the first resistor R1 is connected to one end of the second resistor R2, one end of the third resistor R4, and the positive power input end of the alarm B, the other end of the first resistor R1 is connected to the positive electrode of the light-emitting diode RL, the other end of the second resistor R2 is connected to the collector of the phototransistor Q1, the emitter of the phototransistor Q1 is connected to the positive electrode of the capacitor C1, and one end of the fourth resistor R3 is connected The other end of the fourth resistor R3 is connected to the base of the first transistor Q2, the collector of the first transistor Q2 is connected to the base of the second transistor Q3 and the other end of the third resistor R4, the collector of the second transistor Q3 is connected to the negative power input terminal of the alarm B, the emitters of the two transistors Q2 and Q3 are connected to the negative electrode of the capacitor C1 and the negative electrode of the light-emitting diode RL, the light-emitting diode RL and the phototransistor Q1 are fixed face to face in the middle of the left and right sides of the upper end of the filter cylinder 41, and the light-emitting surface of the light-emitting diode RL is aligned with the light-receiving surface of the phototransistor Q1.

[0020] Figure 1 、 2 As shown in Figures 3 and 4, the power input terminal of the power switch S1 (connected to one pole of the 220V power supply), the power input terminals 1 and 2 of the power module A1 and the two poles of the AC 220V power supply are respectively connected via wires, the power output terminals 3 and 4 of the power module T1 and the power input terminals 1 and 2 of the control circuit, the power input terminal of the time-controlled switch T2, one end of the power input terminal of the detection circuit, the resistor R2 and the emitter of the transistor Q2 are connected via wires, the power output terminal of the control circuit, the time-controlled switches T2 and T3, 3 and 4 and the positive and negative and negative and positive power input terminals of the electric linear slide M1 are respectively connected via wires, the power output terminal of the power switch S1 and the other pole of the 220V power supply are connected to the power input terminals of the motor M via wires. Figure 4 As shown, power module T1 is a finished product of an AC 220V to DC 12V power module; time switches T2 and T3 are model KG316T, and have two power input terminals, two power output terminals, and seven setting buttons. Adjusting the seven setting buttons can set the time interval and output duration of the two power output terminals; motor M has a power of 3KW; resistors R1, R2, R3, and R4 have resistance values ​​of 1.8K, 20K, 47K, and 200K, respectively; transistors Q2 and Q3 are model 9013 (NPN); phototransistor Q1 is model 3DU; light-emitting diode RL is a yellow light-emitting diode; capacitor C1 is model 100μF / 25V (filtering function); alarm B is a finished product of an active continuous sound alarm model FM12V.

[0021] Figure 1 、 2As shown in Figures 3 and 4, the present invention has a push handle 101 and wheels 2, so workers can easily push the entire device to the corresponding work area. After the AC 220V power enters the power input terminal of the power module T1, the power module T1 outputs a stable DC 12V power supply from pins 3 and 4 to the power input terminal of the control circuit and detection circuit. After the power switch S1 is turned on, the motor reduction mechanism M is energized and starts to work. Its rotating shaft drives the driven gear 36 to reduce speed and increase torque through the driving gear 35. The driven gear 36 drives the dust suction pipe 37 to rotate clockwise. The dust suction pipe 37 drives the electric linear slide M1 and the dust suction cover 33 to rotate continuously 360 degrees (the rear end of the dust suction pipe rotates along the inner ring of the bearing A51, and the sleeve 52 does not rotate). After the time control switch T2 is energized, its 3 and 4 pins will first output 20 seconds (time adjustable) power to the positive and negative power input terminals of the electric linear slide M1, and then output 20 seconds (time adjustable) power to the positive and negative power input terminals of the electric linear slide M1 every 20 seconds. After the time control switch T3 is energized, its 3 and 4 pins will output 20 seconds (time adjustable) power to the negative and positive power input terminals of the electric linear slide M1 every 20 seconds, and then output 20 seconds (time adjustable) power to the negative and positive power input terminals of the electric linear slide M1 every 20 seconds. During the time when the positive and negative power input terminals of the electric linear slide M1 are powered, its sliding block will drive the dust hood 33 to move from one side to the other through the guide groove 8, and during the time when the negative and positive power input terminals of the electric linear slide M1 are powered, its sliding block will drive the dust hood 33 to move from the other side to the other side. Through the above, when the present invention is working, the motor M and the like will drive the dust hood (33) to rotate 360 ​​degrees continuously, and the electric linear slide will make the dust hood circulate and reciprocate from one side to the other and from the other side to the one side without interruption; in this way, the working surface for absorbing dust is relatively large, which can achieve a better dust collection effect. After the motor M is energized and working, its rotating shaft will drive the heat dissipation impeller 31 and the blower impeller 32 to rotate respectively. The heat dissipation impeller 31 blows air to dissipate heat from the motor housing. The high-velocity air blown out by the blower impeller 32 (air enters through the air intake pipe 381 and is discharged from the exhaust pipe 382) enters the filter cartridge 41 through the upper connecting pipe 42. The high-velocity air will generate negative pressure on the rear side of the branch pipe 53. In this way, dust in the external air can continuously enter the filter cartridge 41 along with the high-velocity air from the front of the dust collection hood 33 that rotates and reciprocates up or down. The high-velocity air entering the filter cartridge 41 is filtered in turn by the two filter screens 43 at the upper and lower ends of the filter cartridge, and then rushes to the water-surface end surface at the lower end of the filter cartridge 41. After the water absorbs the remaining dust in the air, the clean air is discharged to the atmosphere through the exhaust pipe 46, completing the dust intake, filtration, adsorption and discharge process.Through the above, the motor of the present invention can not only drive the dust hood and the like to rotate in a circular direction through relevant mechanisms, but also simultaneously generate negative pressure for the filtering mechanism, so that the dust from the outside can enter the filtering mechanism through the dust hood, thereby achieving the purpose of dual use of one machine, saving installation space, and reducing costs (no need to use a set of motors to generate negative pressure and drive the dust hood and the like to rotate); it can filter the dust in the air, and can adsorb the trace dust contained in the air after filtering by the filter through water, thereby reducing the amount of dust discharged into the air and ensuring the respiratory health of the staff as much as possible.

[0022] Figure 1 、 2 As shown, after a period of use, the present invention can be opened to remove dust from the two filters 43 (not limited to two, but can also be multiple). The two filters 43 are then replaced on the two support rings 411, and the movable door 45 is closed, allowing the device to resume normal operation. When the detection circuit is energized, power is reduced and limited by resistor R1 before entering the power input terminal of the light-emitting diode RL. When the filters 43 are performing effectively, dust is low at the upper end of the filter cartridge 41, and light transmittance is high, the light emitted by the light-emitting diode RL shines brightly on the light-receiving surface of the phototransistor Q1 (which is reduced and limited by resistor R2). The internal resistance of phototransistor Q1 is low, and its emitter outputs a high level (above 0.7V). This is reduced and limited by resistor R3, and then enters the base of transistor Q2 (with capacitor C1 acting as a filter). Transistor Q2 conducts, and its collector outputs a low level, which enters the base of transistor Q3. Without a suitable forward voltage at the base of transistor Q3, the transistor is cut off, and alarm B is not energized or sounded. When filter 43 becomes partially or completely clogged for various reasons, resulting in poor filtration performance, dust accumulates at the upper end of filter cartridge 41, resulting in low light transmittance. Light from LED RL strikes the light-receiving surface of phototransistor Q1 (resistor R2 reduces voltage and limits current), resulting in low light levels. Phototransistor Q1 has a high internal resistance, and the high level (less than 0.7V) output from its emitter enters the base of transistor Q2, which has a low voltage. Transistor Q2 is cut off, and its collector no longer outputs a low level, which enters the base of transistor Q3. Resistor R4 provides the appropriate positive voltage at the base of transistor Q3, turning it on and outputting a low level to the negative power input of alarm B. This activates alarm B, alerting personnel that filter 42 is performing poor filtration and needs to be cleaned or replaced. As described above, the present invention promptly alerts personnel to clean the filter when the filter becomes clogged, ensuring stable and reliable dust collection.

[0023] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded in all respects as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents of the claims are intended to be included therein.

[0024] In addition, it should be understood that although this specification is described in terms of implementation methods, the implementation methods do not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A dust removal device for tunnel construction, comprising a base plate and wheels, characterized in that: The motor is fixedly mounted on the side of the frame, and the middle of the dust collector is mounted on the other side of the frame. On the side end, the driven gear is fixedly installed on the outside of the dust suction pipe, and the front end of the dust suction pipe is fixedly installed with a ventilation pipe, the front end of the dust suction pipe is fixedly installed on the rear end of the shell of the electric linear slide, and a guide groove is vertically distributed on one side of the shell of the electric linear slide. One end of the sliding block of the electric linear slide has an opening, and the rear end of the dust suction hood is fixedly installed with a connecting pipe, and the outside of the connecting pipe is fixedly installed in the opening of the sliding block. The dust suction surface of the dust suction hood is located at the front end, and the rear end of the connecting pipe and the ventilation pipe are connected through a hose with a length margin; the rotating connection mechanism includes a sleeve and a branch pipe, the front end of the branch pipe is fixedly installed on the rear end of the sleeve, and the rear end of the dust suction pipe is rotatably installed in the front end of the sleeve, the rear end of the branch pipe and the rear side of the exhaust pipe are respectively fixedly connected in parallel with the upper air inlet pipe of the filter mechanism, and the lower end of the filter cartridge of the filter mechanism is fixedly installed on the rear of the base plate; the control circuit and the detection circuit are installed in the electric control box, and the electric control box is fixedly installed on one end of the base plate.

2. A dust removal device for tunnel construction according to claim 1, characterized in that: A push handle is fixedly installed at the rear end of the base plate.

3. The dust removal equipment for tunnel construction according to claim 1, characterized in that: There is a gap between the rear inner side of the motor front end cover and the motor front end shell, and a sealed structure is formed between the front inner side of the motor rear end cover and the motor rear end shell.

4. The dust removal equipment for tunnel construction according to claim 1, characterized in that: The driving gear and the driven gear are meshed, and the number of teeth of the driving gear is less than the number of teeth of the driven gear.

5. The dust removal equipment for tunnel construction according to claim 1, characterized in that: The filtering mechanism includes an upper air inlet pipe, a filter cartridge, a filter screen ring, and a valve. A movable door is installed on one side of the filter cartridge. There are at least two support rings spaced apart in the filter cartridge, and there are at least two filter screens. The two filter screens are respectively arranged on the two support rings. The lower end of the upper connecting pipe is fixedly installed on the outside of the upper end of the filter cartridge. An exhaust pipe is installed on the side end of the filter cartridge below the opening, and one end of the valve is fixedly installed on the outside of the lower end of the filter cartridge.

6. The dust removal equipment for tunnel construction according to claim 1, characterized in that: From top to bottom, the aperture of the upper filter screen is larger than that of the lower filter screen between the two filter screens of the filtering mechanism. A rubber ring is fixedly installed on the outer end of the upper side of the filter screen, and the rubber ring and the inner side of the filter cartridge are in a sealed contact structure; the lower part of the filter cartridge is filled with water, and the upper end of the waterline is located at the lower end of the exhaust pipe.

7. The dust removal equipment for tunnel construction according to claim 1, characterized in that: The control circuit includes two sets of time-controlled switches that are electrically connected, and the power input ends of the two sets of time-controlled switches are respectively connected.

8. The dust removal equipment for tunnel construction according to claim 1, characterized in that: The detection circuit includes an electrically connected resistor, a light-emitting diode, a phototransistor, a transistor, an alarm, and a capacitor. One end of the first resistor is connected to one end of the second resistor, one end of the third resistor, and the positive power input end of the alarm. The other end of the first resistor is connected to the positive pole of the light-emitting diode, the other end of the second resistor is connected to the collector of the phototransistor, the emitter of the phototransistor is connected to the positive pole of the capacitor and one end of the fourth resistor, the other end of the fourth resistor is connected to the base of the first transistor, the collector of the first transistor and the base of the second transistor, the other end of the third resistor is connected, the collector of the second transistor is connected to the negative power input end of the alarm, the emitters of the two transistors are connected to the negative pole of the capacitor and the negative pole of the light-emitting diode, and the light-emitting diode and the phototransistor are fixedly installed face to face on both sides of the upper end of the filter cylinder.

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