A protective film distance cutting device for highway bridge engineering

Abstract

The invention discloses a protective film fixed distance cutting device for highway bridge engineering, belonging to the technical field of cutting devices for highway bridge engineering. A protective film fixed distance cutting device for highway bridge engineering comprises a cutting box, a working path is provided on the lower side of the cutting box, a scale line is provided on one side of the bottom surface of the working path, and a synchronous clamping and cutting mechanism is arranged so that when in use, the swinging of the working rod forms a lever principle, so that the cutting knife on the working column moves up and down to perform cutting action, and at the same time, the clamping block will press the protective film due to the action of gravity, and further compact it as the cutting knife descends, so as to perform cutting action, so that it cuts evenly, and at the same time avoids the situation that the protection is not directly disconnected after the tool is worn, but is pulled and damaged.

Description

Technical Field

[0001] The invention relates to the technical field of segment cutting devices for highway bridge engineering, and more specifically to a protective film fixed-distance segment cutting device for highway bridge engineering. Background Art

[0002] Highway bridge engineering includes the main body of the bridge (i.e. the bridge superstructure and the bridge substructure) and the attached engineering facilities in the overall bridge site. During the construction or maintenance of highway bridge engineering, it is necessary to protect the construction links with a protective film. The document with the prior art publication number CN213829106U provides a protective film cutting device for highway bridge engineering. The device is composed of a base, universal wheels, a stainless steel shell, a tool box, an opening and closing top cover, and a push rod. Four universal wheels are equidistantly installed at the bottom of the base, the stainless steel shell is fixedly connected to the top of the base, the tool box is fixedly connected to the front end of the top of the stainless steel shell, the opening and closing top cover is opened at the top of the rear of the stainless steel shell, and the push rod is fixedly connected to the back of the stainless steel shell. Although the device has many beneficial effects, the following problems still exist: 1. The device directly cuts the protective film by pushing the cutting knife through the hydraulic rod. During this process, the protective film is not compacted and fixed for cutting, resulting in uneven cutting, or the protection is not directly disconnected after the tool is worn, but is pulled apart; 2. At the same time, the device cannot control the speed of the knife according to the different materials, so that the smoothness of the incision cannot be guaranteed. In view of this, we propose a protective film fixed-distance cutting device for highway bridge engineering. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] The purpose of the present invention is to provide a protective film spacing cutting device for highway bridge engineering to solve the problems raised in the above background technology.

[0005] 2. Technical solution

[0006] A protective film spacing cutting device for highway bridge engineering includes a cutting box, a working path provided at the lower side of the cutting box, a scale line provided on one side of the bottom surface of the working path, and a speed change protection box embedded in the surface of the cutting box, characterized in that: a square cavity is provided on one side of the middle of the speed change protection box, an organic cavity is provided on the other side of the middle of the speed change protection box, and a speed change cavity is provided on the lower side of the inside of the speed change protection box; a synchronous clamping and cutting mechanism is provided inside the cutting box, which is used for clamping and cutting the protective film; and a speed change adjustment mechanism is provided inside the speed change cavity, which is used for adjusting the cutting speed of the device.

[0007] Preferably, a motor is provided inside the machine cavity, a hollow shaft is provided inside the square cavity, a bevel gear B is sleeved on the circumferential outer wall of the hollow shaft, the motor output shaft passes through the machine cavity and extends to the inside of the square cavity and is sleeved on a bevel gear A, the bevel gear A is meshingly connected with the bevel gear B, a limiting ring is provided at one end of the hollow shaft, and the limiting ring is rotatably connected to a circular groove arranged inside the speed change protection box.

[0008] Preferably, the synchronous clamping and cutting mechanism includes a fixed block, a central axis is rotatably arranged in the middle of the fixed block, a control block is arranged on the circumferential outer wall of the central axis, one end of the control block is arranged in an inclined structure, a swinging working rod is arranged inside the cutting box, a tension spring is hung on the outside of the swinging working rod, and the lower end of the tension spring is connected to the fixed rod arranged inside the cutting box through a hook.

[0009] Preferably, a roller is provided on one side of the swing working rod for rotation via a rotating shaft, the roller is rollingly connected to the inclined outer wall of the control block, a U-shaped groove is provided at one end of the swing working rod, and two fixing ears are provided on one side of the inner part of the cutting box in an upper and lower structure, a working column is slidably provided in the middle of the fixing ear, and a through groove is provided in the middle of the circumferential outer wall of the working column.

[0010] Preferably, a fixing column is provided in the middle of the through slot, and the fixing column is gap-matched with the through slot. The fixing column is slidably connected and rotatably matched with the U-shaped slot. The lower end of the working column passes through the interior of the fixing ear and the inner wall of the cutting box to extend to the interior of the working channel and is welded with a square block. Two limit blocks A are symmetrically provided on the outside of the square block. A bolt is slidably provided in the middle of the limit block A, and a limit block is slidably provided at the bolt cylinder.

[0011] Preferably, the limiting block is connected and fixed to the inner wall of the working channel, a segment cutting knife is provided in the middle of the bottom surface of the square block, the segment cutting knife is arranged in an inclined structure, a clamping block is provided on the lower side of the segment cutting knife, two limit blocks B are symmetrically provided on the outer wall of the clamping block, the limit block B is slidably connected to the outer wall of the cylindrical end of the bolt, an empty knife groove is opened in the middle of the limit block B, and the empty knife groove is gap-matched with the segment cutting knife.

[0012] Preferably, the speed change adjustment mechanism includes a conical speed regulating block A, an adjustment rod is slidably arranged in the middle of the conical speed regulating block A, the upper end of the adjustment rod extends through the interior of the hollow shaft to the outside and is coaxially connected with a telescopic rod, and the lower end of the adjustment rod extends through the interior of the conical speed regulating block A to the interior of the speed change cavity and is welded with a cross-shaped hinge seat.

[0013] Preferably, a plurality of sleeves are provided in an annular shape at equal intervals on the outer side of the cross-shaped hinge seat, and two rotating columns are symmetrically provided on the circumferential outer wall of the sleeve, and the rotating columns are rotatably connected to the holes on the outer side of the cross-shaped hinge seat.

[0014] Preferably, a rotating switching rod is rotatably arranged inside the sleeve, and two annular rubbers are symmetrically arranged on the outer end of the rotating switching rod. The annular rubbers are frictionally connected to the outer wall of the conical speed regulating block A. A conical speed regulating block B is rotatably arranged in the middle of the speed changing cavity through a rotating shaft. The rotating shaft is coaxially connected to the control block, and a torsion spring is sleeved on the circumferential outer wall of the rotating shaft.

[0015] Preferably, a keyway is provided in the middle of the conical speed regulating block B, and the keyway is slidably connected to a flat key provided on the outer wall of the rotating shaft, and two annular springs are symmetrically provided on the outer walls of the plurality of rotating switching rods.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. The present invention adopts the setting of synchronous clamping and cutting mechanism, so that when in use, the working rod can be swung to form a lever principle, so that the cutting knife on the working column can move up and down to perform cutting action. At the same time, the clamping block will exert pressure on the protective film due to the effect of gravity, and further compact it as the cutting knife descends, so as to perform cutting action, so that the cutting is uniform, and at the same time, it is avoided that the protection is not directly disconnected after the tool is worn, but is pulled.

[0019] 2. The present invention sets a speed-changing regulating mechanism so that the rotation speed of the conical speed regulating block B can be adjusted by extending and retracting the telescopic rod, thereby changing the rotation speed of the control block, thereby changing the speed of the lower end of the cutting knife, so that the cutting can be performed according to the toughness and brittleness of different materials, thereby improving practicality and reducing the probability of damage to the protective film during the cutting process.

[0020] 3. The present invention uses the design of a tension spring so that the roller is always in contact with the outer wall of the control block; and uses the design of annular springs and torsion springs so that the conical speed regulating block B and the conical speed regulating block A can always be in contact with the rotating switching rod and the annular rubber, ensuring that they are always frictionally connected and rotated therewith; and the setting of the inclined structure of the segment cutting knife enables it to first contact the edge of the protective film when feeding the knife for cutting, so as to reduce the contact area and thus increase the pressure, so that it can cut from one side and the other side, ensuring the uniformity of the incision and a certain protective effect even with fast cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the outer structure of the segment cutting knife of the present invention;

[0024] Figure 4 This is a structural breakdown diagram of the speed-changing adjustment mechanism of the present invention;

[0025] Figure 5 It is a structural expansion diagram of the conical speed regulating block B of the present invention;

[0026] Explanation of the numbers in the figure: 1. Cutting box; 2. Working channel; 3. Speed ​​change protection box; 301. Square cavity; 302. Machine cavity; 303. Speed ​​change cavity; 304. Motor; 305. Bevel gear A; 306. Hollow shaft; 307. Bevel gear B; 308. Limiting ring; 4. Speed ​​change adjustment mechanism; 401. Conical speed regulating block A; 402. Adjusting rod; 403. Telescopic rod; 404. Cross hinge seat; 405. Sleeve; 406. Rotating column; 407. Rotating switching rod; 408. Ring rubber; 409. Conical speed regulating block B; 4010. Rotating Shaft; 4011, torsion spring; 4012, keyway; 4013, annular spring; 5, fixed block; 501, middle axis; 502, control block; 503, swing working rod; 504, tension spring; 505, roller; 506, U-shaped groove; 507, working column; 508, through groove; 509, fixed column; 5010, fixed ear; 5011, square block; 5012, limit block A; 5013, bolt; 5014, limit block; 5015, clamping block; 5016, limit block B; 5017, empty knife groove; 5018, cutting knife. DETAILED DESCRIPTION

[0027] See also Figure 1-5 , the present invention provides a technical solution:

[0028] A protective film distance cutting device for highway bridge engineering comprises a cutting box 1, a working path 2 provided at the lower side of the cutting box, a scale line provided on one side of the bottom surface of the working path 2, a speed change protection box 3 embedded in the surface of the cutting box 1, a square cavity 301 provided on one side of the middle of the speed change protection box 3, an organic cavity 302 provided on the other side of the middle of the speed change protection box 3, and a speed change cavity 303 provided on the lower side of the inside of the speed change protection box 3; a synchronous clamping and cutting mechanism provided inside the cutting box 1; and a speed change adjustment mechanism provided inside the speed change cavity.

[0029] Furthermore, a motor 304 is provided inside the machine cavity 302 , a hollow shaft 306 is provided inside the square cavity 301 , and a bevel gear B307 is sleeved on the outer circumferential wall of the hollow shaft 306 .

[0030] The present invention sets a synchronous clamping and cutting mechanism so that when in use, it can form a lever principle by swinging the swinging working rod 503, so that the cutting knife on the working column 503 moves up and down to perform a cutting action. At the same time, the clamping block 5015 will exert pressure on the protective film due to gravity, and further compact it as the cutting knife 5018 descends, thereby performing a cutting action, so that the cutting is uniform, and at the same time, it is avoided that the protection is not directly disconnected after the tool is worn, but is pulled.

[0031] Specifically, the output shaft of the motor 304 passes through the machine cavity 302 and extends to the inside of the square cavity 301 and is sleeved with a bevel gear A305, which is meshed with a bevel gear B307. A limit ring 308 is provided at one end of the hollow shaft 306, and the limit ring 308 is rotatably connected to a circular groove set inside the speed change protection box 3.

[0032] The present invention rotates through the output shaft of the motor 304, and the output shaft of the motor 304 extends through the interior of the machine cavity 302 to the interior of the square cavity 301 and is sleeved with a bevel gear A305, so that the bevel gear A305 rotates, and the bevel gear A305 is meshed and connected with the bevel gear B307, thereby driving the bevel gear B307 to rotate.

[0033] Furthermore, the synchronous clamping and cutting mechanism includes a fixed block 5, a central axis 501 is rotatably arranged in the middle of the fixed block 5, a control block 502 is arranged on the circumferential outer wall of the central axis 501, one end of the control block 502 is arranged in an inclined structure, a swinging working rod 503 is arranged inside the cutting box 1, and a tension spring 504 is hung on the outside of the swinging working rod 503, and the lower end of the tension spring 504 is connected to the fixed rod arranged inside the cutting box 1 through a hook.

[0034] The present invention adopts the design of the synchronous clamping and cutting mechanism so that clamping and cutting can be performed synchronously one after the other, and the design of the tension spring 504 makes the roller 505 always fit the outer wall of the control block 502.

[0035] Furthermore, a roller 505 is provided on one side of the swing working rod 503 for rotation through a rotating shaft, and the roller 505 is rollingly connected to the inclined outer wall of the control block 502. A U-shaped groove 506 is provided at one end of the swing working rod 503, and two fixed ears 5010 are provided on one side of the inner part of the cutting box 1 in an upper and lower structure. A working column 507 is slidably provided in the middle of the fixed ear 5010, and a through groove 508 is provided in the middle of the circumferential outer wall of the working column 507.

[0036] The present invention enables the roller 505 to roll with the outer wall of the inclined surface of the control block 502, thereby driving the swing working rod 503 to swing, thereby providing power for subsequent work.

[0037] Furthermore, a fixed column 509 is provided in the middle of the through slot 508, and the fixed column 509 is loosely matched with the through slot 508. The fixed column 509 is slidably connected and rotatably matched with the U-shaped slot 506. The lower end of the working column 507 passes through the interior of the fixing ear 5010 and the inner wall of the cutting box 1 to extend to the interior of the working channel 2 and is welded with a square block 5011. Two limit blocks A5012 are symmetrically provided on the outside of the square block 5011. A bolt 5013 is slidably provided in the middle of the limit block A5012, and a limit block 5014 is slidably provided at the cylinder of the bolt 5013.

[0038] The present invention can adapt to the change of the arc of up and down movement by setting the U-shaped groove 506, so as to ensure that the working column 507 can move up and down.

[0039] It is worth mentioning that the limiting block 5014 is connected and fixed to the inner wall of the working channel 2, a cutting knife 5018 is provided in the middle of the bottom surface of the square block 5011, and the cutting knife 5018 is arranged in an inclined structure. A clamping block 5015 is provided on the lower side of the cutting knife 5018, and two limit blocks B5016 are symmetrically provided on the outer wall of the clamping block 5015. The limit block B5016 is slidably connected to the outer wall of the cylindrical end of the bolt 5013, and an empty knife groove 5017 is opened in the middle of the limit block B5016, and the empty knife groove 5017 is clearance-matched with the cutting knife 5018.

[0040] The present invention limits the position of the bolt 5013 so that when the working column 507 moves, the clamping block 5015 first contacts the protective film, thereby forming a clamp, and then the cutting knife is pushed down to cut.

[0041] It is worth noting that the speed adjustment mechanism 4 includes a conical speed regulating block A401, and an adjustment rod 402 is slidably arranged in the middle of the conical speed regulating block A401. The upper end of the adjustment rod 402 extends through the interior of the hollow shaft 306 to the outside and is coaxially connected with a telescopic rod 403. The lower end of the adjustment rod 402 extends through the interior of the conical speed regulating block A401 to the interior of the speed changing cavity 303 and is welded with a cross-shaped hinge seat 404.

[0042] The present invention sets a speed-changing regulating mechanism 4, so that the rotation speed of the conical speed regulating block B409 can be adjusted by extending and retracting the telescopic rod 403, thereby changing the rotation speed of the control block 502, thereby changing the lower end speed of the cutting knife 5018, so that the cutting can be performed according to the toughness and brittleness of different materials, thereby improving practicality and reducing the probability of damage to the protective film during the cutting process.

[0043] In addition, a plurality of sleeves 405 are provided in an annular shape at equal intervals on the outside of the cross-shaped hinge seat 404 , and two rotating columns 406 are symmetrically provided on the circumferential outer wall of the sleeve 405 , and the rotating columns 406 are rotatably connected to the holes on the outside of the cross-shaped hinge seat 404 .

[0044] The present invention enables the sleeve 405 to adapt to the change of the angle of the rotating switch rod 407 by setting the rotating column 406, so that the speed is changed by rotating the rotating switch rod 407.

[0045] In addition, a rotating switching rod 407 is rotatably arranged inside the sleeve 405, and two annular rubbers 408 are symmetrically arranged on the outer end of the rotating switching rod 407. The annular rubber 408 is frictionally connected to the outer wall of the conical speed regulating block A401. A conical speed regulating block B409 is rotatably arranged in the middle of the speed change cavity 303 through a rotating shaft 4010. The rotating shaft 4010 is coaxially connected to the control block 502, and a torsion spring 4011 is sleeved on the circumferential outer wall of the rotating shaft 4010.

[0046] The present invention rotates the switching rod 407 and cooperates with the setting of the annular rubber 408, thereby changing the speed of the control block 502 through the different positions of the annular rubber 408 on the conical speed regulating block A and the conical speed regulating block B409.

[0047] In addition, a key slot 4012 is provided in the middle of the conical speed regulating block B409, and the key slot 4012 is slidably connected to a flat key provided on the outer wall of the rotating shaft 4010, and two annular springs 4013 are symmetrically provided on the outer wall of the plurality of rotating switching rods 407.

[0048] The present invention allows the conical speed regulating block B409 to slide on the rotating shaft 4010 through the setting of the keyway 4012, so that the conical speed regulating block B409 can move through the push of the torsion spring 4011, thereby adapting to the absence of contact gap when the rotating switching rod 407 is in different positions.

[0049] Working principle: When the protective film distance cutting device for highway bridge engineering is needed, first, the protective film is placed in the working path 2 to be cut, and the distance is determined by the scale lines set inside the working path 2. At this time, the controller drives the output shaft of the motor 304 to rotate, and the output shaft of the motor 304 extends through the machine cavity 302 to the inside of the square cavity 301 and is sleeved with a bevel gear A305, so that the bevel gear A305 rotates, and the bevel gear A305 is meshed with the bevel gear B307, thereby driving the bevel gear B307 to rotate, thereby driving the conical speed regulating block A401 to rotate through the hollow shaft 306. At this time, the telescopic rod 403 is driven to extend and retract by the controller, driving the cross-shaped hinge seat 404, and the outer side of the cross-shaped hinge seat 404 is provided with a plurality of sleeves 405 in a ring shape with equal intervals. Through the setting of the rotating column 406, The sleeve 405 can adapt to the change of the angle of the rotating switch rod 407. At this time, by rotating the switching rod 407 and cooperating with the setting of the annular rubber 408, the speed of the control block 502 can be changed through the different positions of the annular rubber 408 in the conical speed regulating block A and the conical speed regulating block B409. The design of the tension spring 504 makes the roller 505 always fit the outer wall of the control block 502. At this time, the roller 505 rolls with the inclined outer wall of the control block 502, so that it drives the swinging working rod 503 to swing, providing power for subsequent work, so that the working column 507 moves. At this time, through the limitation of the bolt 5013, when the working column 507 moves, the clamping block 5015 first contacts the protective film, so that it can form a clamp, and then the cutting knife is pushed down to cut.

Claims

1. A protective film distance cutting device for highway bridge engineering, comprising a cutting box, a working path provided on the lower side of the cutting box, a scale line provided on one side of the bottom surface of the working path, and a speed change protection box embedded in the surface of the cutting box, characterized in that: A square cavity is provided on one side of the middle of the speed-shift protection box, an organic cavity is provided on the other side of the middle of the speed-shift protection box, and a speed-shift cavity is provided on the lower side of the interior of the speed-shift protection box; A synchronous clamping and cutting mechanism disposed inside the cutting box is used to clamp and cut the protective film; The synchronous clamping and cutting mechanism comprises a fixed block, a central axis is rotatably arranged in the middle of the fixed block, a control block is arranged on the circumferential outer wall of the central axis, one end of the control block is arranged in an inclined structure, a swinging working rod is arranged inside the cutting box, a tension spring is hung on the outer side of the swinging working rod, the lower end of the tension spring is connected to the fixed rod arranged inside the cutting box through a hook, a roller is rotatably arranged on one side of the swinging working rod through a rotating shaft, the roller is rollingly connected to the inclined outer wall of the control block, and a U-shaped groove is opened at one end of the swinging working rod. One side of the interior of the segment cutting box is provided with two fixing ears in an upper and lower structure, a working column is slidably provided in the middle of the fixing ear, a through slot is provided in the middle of the circumferential outer wall of the working column, a fixing column is provided in the middle of the through slot, the fixing column and the through slot are gap-matched, the fixing column is slidably connected with the U-shaped slot and rotatably matched, the lower end of the working column passes through the interior of the fixing ear and the inner wall of the segment cutting box to extend to the interior of the working channel and is welded with a square block, a segment cutting knife is provided in the middle of the bottom surface of the square block, the segment cutting knife is arranged in an inclined structure, and a clamping block is provided on the lower side of the segment cutting knife; A speed change adjustment mechanism disposed inside the speed change chamber is used to adjust the cutting and falling speed of the device; The speed change adjustment mechanism includes a conical speed regulating block A, an adjusting rod is slidably arranged in the middle of the conical speed regulating block A, the upper end of the adjusting rod extends through the inside of the hollow shaft to the outside and is coaxially connected with a telescopic rod, the lower end of the adjusting rod passes through the inside of the conical speed regulating block A, extends to the inside of the speed change cavity and is welded with a cross-shaped hinge seat, a plurality of sleeves are arranged on the outside of the cross-shaped hinge seat, two rotating columns are symmetrically arranged on the circumferential outer wall of the sleeve, the rotating column is rotatably connected to the hole on the outside of the cross-shaped hinge seat, a rotating switching rod is rotatably arranged inside the sleeve, two annular rubbers are symmetrically arranged on the outer end of the rotating switching rod, the annular rubber is frictionally connected to the outer wall of the conical speed regulating block A, two annular springs are symmetrically arranged on the outer walls of the plurality of rotating switching rods, a conical speed regulating block B is rotatably arranged in the middle of the speed change cavity through a rotating shaft, and the rotating shaft is coaxially connected to the control block.

2. The protective film distance cutting device for highway bridge engineering according to claim 1 is characterized in that: A motor is provided inside the machine cavity, a hollow shaft is provided inside the square cavity, a bevel gear B is sleeved on the circumferential outer wall of the hollow shaft, the motor output shaft passes through the machine cavity and extends to the inside of the square cavity and is sleeved on a bevel gear A, the bevel gear A is meshed and connected with the bevel gear B, a limiting ring is provided at one end of the hollow shaft, and the limiting ring is rotatably connected to a circular groove provided inside the speed change protection box.

3. The protective film distance cutting device for highway bridge engineering according to claim 1 is characterized in that: Two limit blocks A are symmetrically arranged on the outer side of the square block, a bolt is slidably arranged in the middle of the limit block A, and a limit block is slidably arranged at the bolt cylinder.

4. The protective film distance cutting device for highway bridge engineering according to claim 3 is characterized by: The limiting block is connected and fixed to the inner wall of the working channel, and two limiting blocks B are symmetrically arranged on the outer wall of the clamping block. The limiting block B is slidably connected to the outer wall of the cylindrical end of the bolt, and an empty knife groove is opened in the middle of the limiting block B, and the empty knife groove is matched with the gap of the cutting knife.

5. The protective film distance cutting device for highway bridge engineering according to claim 1 is characterized in that: A plurality of sleeves are arranged in an annular shape and at equal intervals on the outer side of the cross-shaped hinge seat.

6. The protective film distance cutting device for highway bridge engineering according to claim 1 is characterized by: The outer circumferential wall of the rotating shaft is sleeved with a torsion spring.

7. The protective film distance cutting device for highway bridge engineering according to claim 1 is characterized by: A keyway is provided in the middle of the conical speed regulating block B, and the keyway is slidably connected to a flat key provided on the outer wall of the rotating shaft.

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