An automatic nail-fixing device for hot-melt liners in tunnel waterproof construction

Abstract

The present invention discloses an automatic nail-fixing device for hot-melt gaskets in tunnel waterproof construction, which includes a moving part feeding mechanism, a nail gun safety treatment mechanism, a nail gun fixing mechanism, a hot-melt gasket positioning and standby mechanism, a hot-melt gasket conveying mechanism, a hot-melt gasket storage mechanism, and a nail gun; the moving part feeding mechanism includes a base panel, a sliding box, a moving part power mechanism and a moving part guiding mechanism, and the moving part power mechanism is used to drive the sliding box to slide up and down along the moving part guiding mechanism; the nail gun safety treatment mechanism includes a firing auxiliary cylinder, a firing auxiliary slide plate and a top gun plate, the firing auxiliary cylinder can drive the firing auxiliary slide plate to slide up and down, and the top gun plate is installed at the bottom of the sliding box and is used to provide a hard stop for canceling the nail gun safety; the nail gun is installed on the firing auxiliary slide plate; the hot-melt gasket conveying mechanism includes a gasket conveying power mechanism and a gasket conveying guiding mechanism, which are used to provide power and guidance for the conveying of the gasket storage barrel to the gasket standby position plate.

Description

Technical Field

[0001] The present invention belongs to the technical field of tunnel waterproof construction, and particularly relates to an automatic nail-fixing device for hot-melt gaskets in tunnel waterproof construction. Background Art

[0002] During the tunnel waterproof construction process, first, a geotextile buffer layer needs to be laid on the surface of the primary support concrete, and a hot-melt gasket is used as a pressing member to anchor the geotextile to the primary support using nails. The nail-fixing requirements for the hot-melt gasket need to have sufficient strength and no leakage points.

[0003] Currently, the fixing of the geotextile by the hot-melt gasket on the surface of the primary support is completed by manual operation of workers. After the laying of the geotextile is completed, the workers first demarcate the positioning of the hot-melt gasket anchoring at a fixed distance in a plum blossom shape according to the construction requirements, then manually pick up the hot-melt gasket, position it closely against the geotextile and press it against the concrete surface. Then the worker holds a nail gun, aligns the muzzle vertically with the center of the hot-melt gasket and pulls the trigger to trigger the nail-firing action, thereby pressing the hot-melt gasket against the geotextile and fixing it on the surface of the primary support.

[0004] With the increasing requirement for the automation level of tunnel construction devices, as well as the emergence and maturity of automatic geotextile laying trolleys, the manual operation method of manual positioning and nail-firing fixation of hot-melt gaskets can no longer meet the requirements due to poor consistency and low efficiency. Therefore, it is necessary to design an automatic nail-fixing device for hot-melt gaskets of geotextiles. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an automatic nail-fixing device for hot-melt gaskets in tunnel waterproof construction. It realizes the full-automatic feeding and nail-fixing of the geotextile buffer layer by an automatic trolley after the tunnel geotextile is laid. It has full-automatic operation and high construction quality, and can cooperate with the tunnel trolley to realize the automation transformation of tunnel construction.

[0006] The present invention is realized through the following technical solutions:

[0007] An automatic nail-fixing device for hot-melt gaskets in tunnel waterproof construction includes a moving part feeding mechanism, a nail gun safety processing mechanism, a nail gun fixing mechanism, a hot-melt gasket positioning standby mechanism, a hot-melt gasket conveying mechanism, a hot-melt gasket storage mechanism, and a nail gun;

[0008] The moving part feeding mechanism includes a base panel, a sliding box, a moving part power mechanism, and a moving part guiding mechanism; the moving part power mechanism is located at the side of the sliding box and is used to drive the sliding box to slide up and down along the moving part guiding mechanism;

[0009] The nail gun safety processing mechanism includes a firing assist cylinder, a firing assist slide plate, and a gun top plate. The firing assist cylinder is fixedly installed on the side wall of the sliding box. The firing assist slide plate is slidably installed on the side wall of the sliding box through an auxiliary guide rail, so that the firing assist slide plate can slide up and down along the auxiliary guide rail. The operating end of the firing assist cylinder is connected to the firing assist slide plate, and thus the firing assist cylinder can drive the firing assist slide plate to slide up and down. The gun top plate is installed at the bottom of the sliding box and is used to provide a hard stop for canceling the nail gun safety.

[0010] The nail gun is installed on the firing assist slide plate.

[0011] The hot melt gasket positioning standby mechanism is installed at the bottom of the sliding box and includes a gasket standby position plate installed on the bottom surface of the sliding box and two retaining spring pieces symmetrically installed on the gasket standby position plate. When the hot melt gasket enters the standby position plate, the retaining spring pieces are pushed apart to both sides, and the entering hot melt gasket is clamped and positioned by the restoring force depending on the inner shape of the retaining spring pieces.

[0012] The hot melt gasket storage mechanism includes a gasket storage barrel and a pressing material execution mechanism. The hot melt gaskets are stacked and stored in the gasket storage barrel, and the pressing material execution mechanism continuously and flexibly presses down the hot melt gaskets in the gasket storage barrel.

[0013] The hot melt gasket conveying mechanism is installed on the base panel and includes a gasket conveying power mechanism and a gasket conveying guiding mechanism, which are used to provide power and guidance for the conveying of the gasket from the gasket storage barrel to the gasket standby position plate.

[0014] In the above technical solution, the moving part power mechanism is located at the side of the sliding box and includes a main cylinder seat installed on the base panel and a main pushing cylinder installed on the main cylinder seat. The top of the main pushing cylinder is connected to the sliding box through a connecting block, and thus the sliding box can be driven to move up and down by the main pushing cylinder.

[0015] In the above technical solution, the number of the moving part guiding mechanisms is multiple and they are installed at the side of the sliding box to provide sliding guidance for the sliding box. The moving part guiding mechanism includes a linear guide rail vertically installed on the base panel and a slider installed on the linear guide rail, and the slider is fixedly connected to the sliding box.

[0016] In the above technical solution, the nail gun is installed on the firing assist slide plate through the nail gun fixing mechanism. The nail gun fixing mechanism includes two parts: the gun body fixing mechanism and the handle fixing mechanism. The gun body fixing mechanism includes a gun body backing plate and a gun body pressing plate. The gun body backing plate is fixedly installed on the inner wall of the firing assist slide plate, and the gun body is fixedly installed on the gun body backing plate through bolts. The gun body pressing plate is in the shape of a three-sided frame and is fixed on the gun body backing plate to surround the gun body of the nail gun. The handle fixing mechanism includes a handle support backing plate and a handle pressing plate. The handle support backing plate is fixedly installed on the firing assist slide plate through bolts. The handle pressing plate is in the shape of a three-sided frame and is fixed on the handle support backing plate to press the handle of the nail gun tightly on the handle support backing plate.

[0017] In the above technical solution, the gasket pressing mechanism includes a pressing cylinder, a pressing cylinder mounting bracket, a connecting arm, a pressing column and a spring. The pressing cylinder mounting bracket is vertically erected on the base panel, the pressing cylinder is vertically installed on the pressing cylinder mounting bracket, one end of the connecting arm is connected to the moving slide of the pressing cylinder, the pressing column is vertically penetrated and installed at the other end of the connecting arm, a disc is provided at the bottom of the pressing column, and the spring is sleeved on the pressing column and located between the disc and the connecting arm to provide a downward elastic force for the pressing column. And the pressing column is located in the gasket storage barrel for continuously and flexibly pressing down the hot-melt gasket in the gasket storage barrel.

[0018] In the above technical solution, the gasket conveying and guiding mechanism includes a gasket fixing slideway and a gasket follower slideway. The gasket fixing slideway is installed on the storage part backing plate. The storage part backing plate is assembled on the base panel and is located at the bottom of the gasket storage barrel. The gasket follower slideway is fixed on the gasket standby position plate and moves up and down with the slide box. In the standby condition, the gasket fixing slideway and the gasket follower slideway are aligned to provide a guiding channel for the hot-melt gasket. The gasket conveying power mechanism includes a conveying cylinder. A connecting plate is assembled on the sliding part of the conveying cylinder, and the front end of the connecting plate is connected to a gasket pushing plate. The gasket pushing plate is used to push the hot-melt gasket in the gasket storage barrel along the guiding channel between two snap spring pieces on the gasket standby position plate.

[0019] The working method of the automatic nail fixing device for the hot-melt gasket in tunnel waterproof construction is as follows:

[0020] First, the conveying cylinder of the hot-melt gasket conveying mechanism is started to drive the gasket pushing plate to move. The gasket pushing plate pushes the lowermost hot-melt gasket in the gasket storage barrel with the notch at the lower end of the gasket storage barrel as a guide, so that the hot-melt gasket is pushed along the aligned gasket fixing slideway and gasket follower slideway between two snap spring pieces on the gasket standby position plate and is clamped. Then, the conveying cylinder drives the connecting plate and the gasket pushing plate to return to the initial state.

[0021] Then, the main pushing cylinder starts, driving the sliding box to extend downward through the hole on the base panel along the movable part guiding mechanism to the set stroke;

[0022] After that, the firing auxiliary cylinder starts, pushing the firing auxiliary slide plate. The firing auxiliary slide plate drives the nail gun fixed on it to feed forward. The front end of the nail gun presses against the top gun plate, automatically releasing the nail shooting insurance;

[0023] After that, the control system controls the nail gun to fire;

[0024] After that, the auxiliary cylinder and the main pushing cylinder are controlled to retract, and the device returns to the initial state, thus ending a working process.

[0025] The advantages and beneficial effects of the present invention are as follows:

[0026] 1. The present invention is configured with a nail gun insurance processing mechanism, ensuring that most continuous safety nail guns on the market can be applicable to this device.

[0027] 2. The nail gun fixing structure adopts double fixation of the gun body and the handle, and is adapted to the special-shaped backing plate to stably support and fix the nail gun, providing a stable and reliable support for the nail gun, and solving the influence on the stability of the nail gun during the operation process of the main machine device.

[0028] 3. A hot-melt gasket positioning standby mechanism is designed, which elastically fixes the hot-melt gasket with a circlip and can generate an adaptive positioning function to ensure that the hot-melt gasket is in the set position at the standby station.

[0029] 4. The connecting plate and the gasket pushing plate are connected by a split square hole and square shaft. The pushing bent plate provides power for the sub-plate, and the guiding of the sub-plate is provided by the gasket storage barrel. The separation of power and guiding avoids the problem of friction jamming with the storage barrel caused by the deformation of the pushing bent plate due to processing accuracy.

[0030] 5. The gasket pressing adopts a dual-pressure coordinated output scheme of cylinder power output and spiral spring adjustment, ensuring that the pressure on the hot-melt gasket in the storage barrel is moderately adjustable, avoiding problems such as the gasket tilting and jamming on the storage barrel caused by too small pressure, and difficult gasket pushing caused by too large pressure.

[0031] The present invention realizes full-automatic feeding of the automatic trolley after the tunnel geotextile is laid, nail shooting to fix the geotextile buffer layer, with full-automatic operation and high construction quality, and can cooperate with the tunnel trolley to realize the automation transformation of tunnel construction. Brief Description of the Drawings

[0032] Figure 1 is a schematic structural diagram of the automatic nail shooting and fixing device for the hot-melt gasket in the tunnel waterproof construction of the present invention.

[0033] Figure 2It is a schematic structural view of another perspective of the automatic nail-fixing device for hot-melt liners in tunnel waterproof construction of the present invention.

[0034] Figure 3 It is a schematic structural view of the back perspective of the automatic nail-fixing device for hot-melt liners in tunnel waterproof construction of the present invention.

[0035] Figure 4 It is a top view of the automatic nail-fixing device for hot-melt liners in tunnel waterproof construction of the present invention.

[0036] Figure 5 It is a schematic structural view of the automatic nail-fixing device for hot-melt liners in tunnel waterproof construction of the present invention after removing the hot-melt liner storage mechanism and the nail gun.

[0037] Figure 6 It is a partial enlarged structural view of the hot-melt liner conveying mechanism in the present invention.

[0038] Figure 7 It is a schematic structural view of the side perspective of the automatic nail-fixing device for hot-melt liners in tunnel waterproof construction of the present invention.

[0039] For those of ordinary skill in the art, without creative efforts, other relevant drawings can be obtained based on the above drawings. Detailed implementation manners

[0040] In order to enable those skilled in the art of this technology to better understand the solution of the present invention, the technical solution of the present invention will be further described below in conjunction with specific embodiments.

[0041] The present invention provides an automatic nail-fixing device for hot-melt liners in tunnel waterproof construction. As shown in the figure, it includes a moving part feeding mechanism, a nail gun safety treatment mechanism, a nail gun fixing mechanism, a hot-melt liner positioning standby mechanism, a hot-melt liner conveying mechanism, a hot-melt liner storage mechanism and a nail gun.

[0042] The moving part feeding mechanism includes a base panel 101, a sliding box 102, a moving part power mechanism 103 and a moving part guiding mechanism 104. Refer to the attached Figure 3 , the moving part power mechanism 103 is located at the side of the sliding box 102, and includes a main cylinder seat 1031 installed on the base panel 101 and a main pushing cylinder 1032 installed on the main cylinder seat 1031. The top of the main pushing cylinder 1032 is connected to the sliding box 102 through a connecting block 1033. Thus, the sliding box 102 can be driven to move up and down through the main pushing cylinder 1032. The number of the moving part guiding mechanisms 104 is preferably 3. Refer to the attached Figure 3, three movable part guiding mechanisms 104 are respectively installed on the upper side and the right side of the sliding box 102 (one is arranged on the upper side and two are arranged on the right side). The sliding box 102 can slide up and down along the movable part guiding mechanism 104 under the drive of the movable part power mechanism 103. Specifically, see the appendix Figure 3 , the movable part guiding mechanism 104 includes a linear guide rail 1041 vertically installed on the base panel 101 and a slider 1042 installed on the linear guide rail 1041. The slider 1042 is fixedly connected to the sliding box 102. Further, a reinforcing rib plate 1043 is also arranged between the linear guide rail 1041 and the base panel 101 to ensure the stability of the linear guide rail 1041.

[0043] The nail gun safety treatment mechanism includes a firing auxiliary cylinder 201, a firing auxiliary slide plate 202 and a top gun plate 203. The firing auxiliary cylinder 201 is fixedly installed on the side wall of the sliding box 102, and the action end of the firing auxiliary cylinder 201 is arranged downward; the firing auxiliary slide plate 202 is slidably installed on the side wall of the sliding box 102 through an auxiliary guide rail 204 so that the firing auxiliary slide plate 202 can slide up and down along the auxiliary guide rail 204; the action end of the firing auxiliary cylinder 201 is bolted to the firing auxiliary slide plate 202, and thus the firing auxiliary cylinder 201 can drive the firing auxiliary slide plate 202 to slide up and down; the top gun plate 203 is installed at the bottom of the sliding box 102 and is used to provide a hard stop for canceling the nail gun safety.

[0044] The nail gun fixing mechanism is installed on the firing auxiliary slide plate 202 and includes two parts: a gun body fixing mechanism and a handle fixing mechanism, which can fix the nail gun 7 on the firing auxiliary slide plate 202 to form a stable and reliable fixation for the nail gun 7.

[0045] Specifically, the gun body fixing mechanism includes a gun body backing plate 3011 and a gun body pressing plate 3012 (see Figure 5 ). The gun body backing plate 3011 is fixedly installed on the inner wall of the firing auxiliary slide plate 202 by bolts, and the gun body is fixedly installed on the gun body backing plate 3011 by bolts. The gun body pressing plate 3012 is in the shape of a three-sided frame and is fixed on the gun body backing plate 3011 to surround the gun body of the nail gun 7; the handle fixing mechanism includes a handle support backing plate 3021 and a handle pressing plate 3022. The handle support backing plate 3021 is fixedly installed on the firing auxiliary slide plate 202 by bolts. The handle pressing plate 3022 is in the shape of a three-sided frame, and the handle pressing plate 3022 is fixed on the handle support backing plate 3021 to press the handle of the nail gun 7 on the handle support backing plate 3021.

[0046] See the appendix Figure 5 and 6, the hot-melt liner positioning standby mechanism is installed at the bottom of the sliding box 102, including a liner standby plate 401 installed on the bottom surface of the sliding box 102 and two clamping spring pieces 402 symmetrically installed on the liner standby plate 401. When the hot-melt liner enters the standby plate, the clamping spring pieces 402 are pushed apart to both sides, and the entering hot-melt liner is clamped and positioned by the restoring force relying on the inner shape of the clamping spring pieces.

[0047] See appendix Figure 5 and 6 , the hot-melt liner conveying mechanism is installed on the base panel 101, including a liner conveying power mechanism 501 and a liner conveying guiding mechanism 502, which are used to provide power and guidance for the conveying of the liner storage barrel 601 to the liner standby plate 401. Among them, the conveying cylinder 5011 in the liner conveying power mechanism 501 is fixed on the base panel 101, and a connecting plate 5012 is assembled on the sliding part of the conveying cylinder 5011. A square hole is provided at the front end of the connecting plate 5012, which forms a fit with the square shaft at one end of the liner pushing plate 5013; the storage part backing plate 5023 in the liner conveying guiding mechanism 502 is assembled on the base panel 101, on which a liner fixing slideway 5021 is assembled, and the liner follower slideway 5022 is fixed on the liner standby plate 401 and moves up and down with the sliding box; under normal standby conditions, the liner fixing slideway 5021 and the liner follower slideway 5022 are aligned to provide a guiding channel for the hot-melt liner.

[0048] The hot-melt liner storage mechanism includes a liner storage barrel 601 and a material pressing execution mechanism 602. The liner storage barrel 601 is installed on the storage part backing plate 5023, and the hot-melt liners are stacked and stored in the storage barrel 601, and the hot-melt liners in the liner storage barrel 601 are continuously and flexibly pressed down by the material pressing execution mechanism 602. Specifically, see appendix Figure 7 , the liner material pressing mechanism 602 includes a material pressing cylinder 6021, a material pressing cylinder mounting frame 6022, a connecting arm 6023, a material pressing column 6024 and a spring 6025. The material pressing cylinder mounting frame 6022 is vertically erected on the base panel 101, the material pressing cylinder 6021 is vertically installed on the material pressing cylinder mounting frame 6022, one end of the connecting arm 6023 is connected to the moving slide of the material pressing cylinder 6021, the material pressing column 6024 is vertically penetrated and installed at the other end of the connecting arm 6023 (a through hole for installing the material pressing column 6024 is provided on the connecting arm 6023), a disc 6026 is provided at the bottom of the material pressing column 6024, and the spring 6025 is sleeved on the material pressing column 6024 and is located between the disc 6026 and the connecting arm 6023, which is used to provide a downward elastic force for the material pressing column 6024; and the material pressing column 6024 is located in the liner storage barrel 601, which is used to continuously and flexibly press down the hot-melt liners in the liner storage barrel 601.

[0049] The working method of the hot-melt gasket automatic nail-fixing device for tunnel waterproof construction is as follows:

[0050] First, the conveying cylinder 5011 of the hot-melt gasket conveying mechanism is started, driving the gasket pushing plate 5013 to move. The gasket pushing plate 5013 pushes the lowermost hot-melt gasket in the gasket storage barrel 601 with the notch at the lower end of the gasket storage barrel 601 as a guide, so that the hot-melt gasket is pushed along the aligned gasket fixing slideway 5021 and gasket follower slideway 5022 to the two snap spring pieces 402 on the gasket standby plate 401 and is clamped; then, the conveying cylinder 5011 drives the connecting plate 5012 and the gasket pushing plate 5013 to return to the initial state.

[0051] Then, the main pushing cylinder 1032 is started, driving the sliding box 102 to extend downward through the hole position on the base panel 101 to the set stroke with the movable part guiding mechanism 104 as a guide.

[0052] After that, the firing auxiliary cylinder 201 is started, pushing the firing auxiliary slide plate 202. The firing auxiliary slide plate 202 drives the nail gun 7 fixed thereon to feed forward. The front end of the nail gun 7 presses against the top gun plate 203, and the nail shooting insurance is automatically released.

[0053] After that, the control system controls the nail gun to fire.

[0054] After that, the auxiliary cylinder 201 and the main pushing cylinder 1032 are controlled to retract, and the device returns to the initial state, and thus a working process ends.

[0055] For ease of explanation, in the embodiments, spatial relative terms such as "upper", "lower", "left", "right", etc. are used to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations during the use or operation of the device. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be located "above" other elements or features. Therefore, the exemplary term "lower" can include both the upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0056] Moreover, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components.

[0057] The above has made an exemplary description of the present invention. It should be noted that without departing from the core of the present invention, any simple deformation, modification, or equivalent substitution that can be made by those skilled in the art without creative efforts falls within the protection scope of the present invention.

Claims

1. An automatic nail-fixing device for hot-melt gaskets in tunnel waterproof construction, characterized in that: It includes a movable part feeding mechanism, a nail gun safety processing mechanism, a nail gun fixing mechanism, a hot melt pad positioning standby mechanism, a hot melt pad conveying mechanism, a hot melt pad storage mechanism and a nail gun; The movable part feeding mechanism includes a base panel, a slide box, a movable part power mechanism and a movable part guide mechanism; the movable part power mechanism is located on the side of the slide box and is used to drive the slide box to slide up and down along the movable part guide mechanism; The nail gun safety handling mechanism includes a firing auxiliary cylinder, a firing auxiliary slide and a gun ejector plate. The firing auxiliary cylinder is fixedly mounted on the side wall of the slide box, and the firing auxiliary slide is slidably mounted on the side wall of the slide box via an auxiliary guide rail, so that the firing auxiliary slide can slide up and down along the auxiliary guide rail; the action end of the firing auxiliary cylinder is connected to the firing auxiliary slide, and the firing auxiliary cylinder can drive the firing auxiliary slide to slide up and down; the gun ejector plate is mounted at the bottom of the slide box, and is used to provide a hard stop for canceling the safety of the nail gun; The nail gun is installed on the firing auxiliary slide; The hot melt pad positioning standby mechanism is installed at the bottom of the slide box, including a pad standby position plate installed on the bottom surface of the slide box and two clip springs symmetrically installed on the pad standby position plate. The clip springs are stretched to both sides when the hot melt pad enters the standby position plate, and rely on the inner shape of the clip springs to complete the clamping and positioning of the entering hot melt pad through the restoring force; The hot melt pad storage mechanism includes a pad storage barrel and a material pressing actuator. The hot melt pads are stacked and stored in the pad storage barrel. The material pressing actuator continuously and flexibly presses the hot melt pads in the pad storage barrel downward. The hot melt liner conveying mechanism is installed on the base panel, and includes a liner conveying power mechanism and a liner conveying guide mechanism, which is used to provide power and guidance for conveying the liner storage barrel to the liner standby position plate.

2. The automatic nailing device for hot-melt lining in tunnel waterproofing construction according to claim 1 is characterized in that: The power mechanism of the movable part is located on the side of the sliding box, and includes a main cylinder seat installed on the base panel and a main pushing cylinder installed on the main cylinder seat. The top of the main pushing cylinder is connected to the sliding box through a connecting block, and the sliding box can be driven up and down by the main pushing cylinder.

3. The automatic nail shooting fixing device for hot-melt liners in tunnel waterproof construction according to claim 1, characterized in that: There are multiple movable part guide mechanisms installed on the side of the slide box; the movable part guide mechanism includes a linear guide rail vertically installed on the base panel and a slider installed on the linear guide rail, and the slider is fixedly connected to the slide box.

4. The automatic nail shooting fixing device for hot melt gasket in tunnel waterproof construction according to claim 1, characterized in that: The nail gun is mounted on the firing auxiliary slide through a nail gun fixing mechanism, and the nail gun fixing mechanism includes two parts: a gun body fixing mechanism and a handle fixing mechanism; the gun body fixing mechanism includes a gun body pad and a gun body pressure plate, the gun body pad is fixedly mounted on the inner wall of the firing auxiliary slide, and the gun body is fixedly mounted on the gun body pad by bolts, and the gun body pressure plate is in the shape of a three-sided frame, which is fixed to the gun body pad to surround the gun body of the nail gun; the handle fixing mechanism includes a handle support pad and a handle pressure plate, the handle support pad is fixedly mounted on the firing auxiliary slide by bolts, and the handle pressure plate is in the shape of a three-sided frame, which is fixed to the handle support pad to press the handle of the nail gun tightly against the handle support pad.

5. The automatic nail-fixing device for hot-melt liners in tunnel waterproof construction according to claim 1, characterized in that: The gasket pressing mechanism includes a pressing cylinder, a pressing cylinder mounting frame, a connecting arm, a pressing column and a spring. The pressing cylinder mounting frame is vertically mounted on the base panel, the pressing cylinder is vertically mounted on the pressing cylinder mounting frame, one end of the connecting arm is connected to the movable slide of the pressing cylinder, the pressing column is vertically penetrated and installed at the other end of the connecting arm, a disc is provided at the bottom of the pressing column, the spring is mounted on the pressing column and is located between the disc and the connecting arm, and is used to provide downward elastic force for the pressing column; and the pressing column is located in the gasket storage barrel, and is used to continuously and flexibly press down the hot-melt gasket in the gasket storage barrel.

6. The automatic nail-fixing device for hot-melt liners in tunnel waterproof construction according to claim 1, characterized in that: The gasket conveying guide mechanism includes a gasket fixing slide and a gasket following slide, the gasket fixing slide is installed on the storage part pad, the storage part pad is assembled on the base panel and is located at the bottom of the gasket storage bucket, the gasket following slide is fixed on the gasket standby position plate, and moves up and down with the slide box; in the standby state, the gasket fixing slide and the gasket following slide are aligned to provide a guide channel for the hot-melt gasket; the gasket conveying power mechanism includes a conveying cylinder, a connecting plate is assembled on the sliding part of the conveying cylinder, and the front end of the connecting plate is connected to the gasket pushing plate, and the gasket pushing plate is used to push the hot-melt gasket in the gasket storage bucket along the guide channel to between the two clip springs of the gasket standby position plate.

7. The operating method of the automatic nail-fixing device for hot-melt lining in tunnel waterproofing construction according to any one of claims 1 to 6, characterized in that: First, the delivery cylinder of the hot melt liner delivery mechanism is activated, driving the liner pushing plate to move. The liner pushing plate uses the notch at the lower end of the liner storage barrel as a guide to push the hot melt liner at the bottom layer in the liner storage barrel, so that the hot melt liner is pushed along the aligned liner fixing slide and liner following slide to between the two clip springs on the liner standby position plate and is clamped. Afterwards, the delivery cylinder drives the connecting plate and the liner pushing plate to return to their initial state. Then, the main push cylinder is activated, driving the slide box to extend downward to the set stroke through the hole on the base panel guided by the movable part guide mechanism; After that, the firing auxiliary cylinder starts, pushing the firing auxiliary slide, which carries the nail gun fixed on it forward, and the front end of the nail gun presses against the top gun plate, automatically releasing the nail safety; Afterwards, the control system controls the nail gun to fire; Afterwards, the auxiliary cylinder and the main push cylinder are controlled to retract, and the device returns to its initial state, thus completing a workflow.

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