Civil air defense door raw material sawing auxiliary device

By designing an auxiliary device for cutting raw materials for air-raid shelter doors, the automatic clamping and movement of steel materials were realized, solving the problems of high labor intensity and low cutting accuracy caused by manual feeding, improving production efficiency and cutting accuracy, and reducing the labor cost for workers.

CN223997447UActive Publication Date: 2026-03-17SHAANXI XINGLONG CIVIL AIR DEFENSE ENG EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-23
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

In existing technologies, steel cutting operations require manual feeding, which leads to high labor intensity, low efficiency, and difficulty in ensuring the accuracy and stability of feeding, thus affecting the production quality of air defense doors.

Method used

An auxiliary device for cutting raw materials for air-raid shelter doors was designed, including a main support, a conveying mechanism, a displacement mechanism, and an auxiliary mechanism. Through the cooperation of hydraulic cylinders and clamping plates, the steel is automatically clamped and moved, cut in conjunction with a saw, and automatically transported using a small belt conveyor, reducing manual operation.

Benefits of technology

It improves the precision and efficiency of steel cutting, reduces the labor intensity of workers, ensures the stability of feeding and the accuracy of cutting, reduces manual operation, and improves the overall production quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a civil air defense door raw material sawing auxiliary device, and belongs to the technical field of civil air defense door production, the civil air defense door raw material sawing auxiliary device comprises a main support and a sawing machine, the top end of the main support is provided with a plurality of conveying mechanisms, and the side, close to the sawing machine, of the main support is provided with a displacement mechanism and an auxiliary mechanism; the fixing base reciprocates on one side of the main support through the displacement mechanism, a lower clamping plate is fixedly installed on one side of the fixing base, a hydraulic cylinder is fixedly installed at the top end of the fixing base, a rectangular block is fixedly installed at the telescopic end of the hydraulic cylinder, an upper clamping plate is fixedly installed on one side of the rectangular block, and the upper clamping plate and the lower clamping plate are symmetrically arranged. A cutting table is placed at the discharging end of the main support and located under the sawing machine, and a small belt conveyor is placed on the side, away from the main support, of the cutting table. Automatic feeding, clamping and discharging of steel are achieved through the displacement mechanism and the auxiliary mechanism, manual operation is reduced, and the production efficiency and the cutting precision are improved.
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Description

Technical Field

[0001] This application relates to the field of civil defense door production technology, and in particular to an auxiliary device for cutting and sawing raw materials for civil defense doors. Background Technology

[0002] Steel is one of the main raw materials for air defense doors. The steel purchased is usually long material, which needs to be cut into lengths using a saw at the prefabrication plant and then welded into air defense door frames, air defense door panels, etc.

[0003] Currently, steel cutting operations are usually carried out manually. Due to the long length of the steel, manual feeding is not only labor-intensive and inefficient, but also makes it difficult to guarantee the accuracy and stability of the feeding, which can easily lead to deviations in the cutting dimensions and affect the production quality of the air defense doors.

[0004] Therefore, this application provides an auxiliary device for cutting raw materials for air defense doors. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides an auxiliary device for cutting raw materials for air-raid shelter doors. This device overcomes the deficiencies of existing technologies and aims to solve the problem that, currently, when cutting steel, manual feeding is usually used. Due to the long length of the steel, manual feeding is not only labor-intensive and inefficient, but also makes it difficult to ensure the accuracy and stability of the feeding, which can easily lead to deviations in the cutting dimensions and affect the production quality of air-raid shelter doors.

[0006] To achieve the above objectives, this application provides the following technical solution: an auxiliary device for cutting raw materials for air-raid shelter doors, comprising a main support and a saw. Several sets of conveying mechanisms are provided at the top of the main support. A displacement mechanism and an auxiliary mechanism are provided on the side of the main support near the saw. The auxiliary mechanism includes a fixed seat, which reciprocates to one side of the main support via the displacement mechanism. A lower clamping plate is fixedly installed on one side of the fixed seat. A hydraulic cylinder is fixedly installed at the top of the fixed seat. A rectangular block is fixedly installed at the telescopic end of the hydraulic cylinder. An upper clamping plate is fixedly installed on one side of the rectangular block. The upper clamping plate and the lower clamping plate are symmetrically arranged. A cutting table is placed at the discharge end of the main support, directly below the saw. A small belt conveyor is placed on the side of the cutting table away from the main support.

[0007] By adopting the above technical solution, the steel is placed above several sets of conveying mechanisms, with the auxiliary mechanism located away from the conveying mechanisms. Then, a displacement mechanism moves the auxiliary mechanism closer to the conveying mechanisms, causing the lower and upper clamping plates to move synchronously to the upper and lower sides of the steel end. A hydraulic cylinder retracts, causing the rectangular block and upper clamping plate to move downwards, clamping the steel. The displacement mechanism then restarts, moving the auxiliary mechanism towards the cutting table. At this point, the lower and upper clamping plates, holding the steel end, move the steel between the saw and the cutting table, where the saw cuts the steel. This, combined with the automatic feeding of the steel pipe via the auxiliary mechanism, allows the steel to be fed automatically. The stable clamping of steel during sawing improves the cutting accuracy. After cutting, the hydraulic cylinder extends to release the clamping of the steel, and the displacement mechanism drives the auxiliary mechanism to move closer to the conveying mechanism to clamp the rear of the steel. Then the displacement mechanism starts again, driving the auxiliary mechanism to move towards the cutting table, so that the steel is moved to the small belt conveyor. The hydraulic cylinder extends to release the clamping of the steel, and the small belt conveyor automatically carries the cut steel to the next process. Through the displacement mechanism and the auxiliary mechanism, the automatic feeding, clamping and unloading of steel are realized, reducing manual operation and improving production efficiency and cutting accuracy.

[0008] As a preferred embodiment of this application, the displacement mechanism includes two sets of rotating seats, both sets of rotating seats being rotatably mounted on one side of the main support. A transmission roller is rotatably connected to the rotating end of each set of rotating seats, and a transmission belt is drivingly connected between the two sets of transmission rollers. A bracket is fixedly mounted on the side wall of the main support directly below each set of rotating seats. A reciprocating motor is fixedly mounted on the top of one set of brackets, and the reciprocating motor is fixedly mounted to the output end of one set of transmission rollers. The other set of transmission rollers is rotatably connected to the adjacent bracket. A fixed seat is fixedly mounted on the top end of the transmission belt.

[0009] By adopting the above technical solution, the reciprocating motor is started, which drives a set of transmission rollers to rotate, and the transmission belt drives another set of transmission rollers to rotate, thereby driving the auxiliary mechanism to move automatically. At the same time, by controlling the forward and reverse rotation of the output end of the reciprocating motor, the auxiliary mechanism is driven to move back and forth, which reduces the labor force of workers and helps to improve production efficiency.

[0010] As a preferred technical solution of this application, the conveying mechanism includes two sets of rotating seats, which are symmetrically installed on the top of the main support. A rotating shaft is rotatably installed between the two sets of symmetrically arranged rotating seats, and a rotating roller is fixedly installed on the outer surface of the rotating shaft.

[0011] By adopting the above technical solution, when the steel is moved by the displacement mechanism and the auxiliary mechanism, since the rear of the steel is placed above the rotating roller, the movement of the steel drives the rotating roller and the rotating shaft to rotate, thereby improving the smoothness of the steel movement.

[0012] As a preferred technical solution of this application, anti-slip pads are fixedly installed on the opposite surfaces of the lower clamping plate and the upper clamping plate.

[0013] By adopting the above technical solution, the clamping effect on the steel is improved by using two sets of anti-slip pads, which is conducive to the stable movement of the steel when clamping it.

[0014] As a preferred technical solution of this application, a pressure sensor is fixedly installed inside the anti-slip pad, and a controller is fixedly installed on one side of the main bracket. The controller is electrically connected to both the pressure sensor and the hydraulic cylinder.

[0015] By adopting the above technical solution, the pressure sensor detects the pressure between the anti-slip mat and the steel in real time and transmits the signal to the controller. When the pressure reaches the set value, the controller controls the hydraulic cylinder to stop moving, preventing excessive pressure from damaging the steel raw material and improving the protection effect of the steel.

[0016] As a preferred technical solution of this application, a guide groove is fixedly installed at the top of the main bracket. The guide groove is located on the side of the lower clamping plate away from the fixed seat. A guide block is slidably connected to the sliding end of the guide groove, and one end of the guide block is fixedly installed with the lower clamping plate.

[0017] By adopting the above technical solution, the guide block moves at the sliding end of the guide groove when the lower clamping plate moves, thus guiding the movement of the lower clamping plate and improving the smoothness of the movement of the lower clamping plate.

[0018] As a preferred technical solution of this application, a limiting plate is fixedly installed at one end of the rotating roller.

[0019] By adopting the above technical solution, the steel is limited by the limiting plate to prevent it from rolling off, thus improving its practicality during use.

[0020] As a preferred technical solution of this application, the top of the cutting table is provided with a guide slope, and a drop trough is provided between the cutting table and the small belt conveyor.

[0021] By adopting the above technical solution, the steel scrap cut off is guided by the guide slope, so that the steel scrap is discharged through the drop chute, avoiding the impact on the operation of the saw and facilitating subsequent unified processing.

[0022] The beneficial effects of this application are:

[0023] 1. By placing the steel above several sets of conveying mechanisms, with the auxiliary mechanism located away from the conveying mechanisms, a displacement mechanism moves the auxiliary mechanism closer to the conveying mechanisms. This causes the lower and upper clamping plates to move synchronously to the upper and lower sides of the steel end. A hydraulic cylinder retracts, causing the rectangular block and upper clamping plate to move downwards, clamping the steel. The displacement mechanism then restarts, moving the auxiliary mechanism towards the cutting table. The lower and upper clamping plates, holding the steel end, move the steel between the saw and the cutting table, where the saw cuts the steel. This process, along with the automatic feeding of the steel pipe via the auxiliary mechanism and the saw, facilitates the automatic feeding of the steel pipe. The stable clamping during steel cutting improves the cutting accuracy. After cutting, the hydraulic cylinder extends to release the clamping of the steel, and the displacement mechanism drives the auxiliary mechanism to move closer to the conveying mechanism to clamp the rear of the steel. Then, the displacement mechanism starts again, driving the auxiliary mechanism to move towards the cutting table, so that the steel is moved onto the small belt conveyor. The hydraulic cylinder extends to release the clamping of the steel, and the small belt conveyor automatically carries the cut steel to the next process. Through the displacement mechanism and the auxiliary mechanism, the automatic feeding, clamping and unloading of steel are realized, reducing manual operation and improving production efficiency and cutting accuracy.

[0024] 2. The reciprocating motor starts, driving a set of transmission rollers to rotate, which in turn drives another set of transmission rollers to rotate via a transmission belt, thereby driving the auxiliary mechanism to move automatically. At the same time, by controlling the forward and reverse rotation of the output end of the reciprocating motor, the auxiliary mechanism is driven to move back and forth, reducing the labor required by workers and improving production efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this application;

[0026] Figure 2 This is a schematic diagram of the displacement mechanism and auxiliary mechanism.

[0027] Figure 3 This is a schematic diagram of the conveying mechanism.

[0028] Figure 4 This is a top view of the structure of this application.

[0029] In the diagram: 1. Main support; 2. Conveying mechanism; 201. Rotating seat one; 202. Rotating shaft; 203. Rotating roller; 3. Displacement mechanism; 301. Rotating seat two; 302. Transmission roller; 303. Transmission belt; 304. Support; 305. Reciprocating motor; 4. Auxiliary mechanism; 401. Fixed seat; 403. Lower clamping plate; 404. Hydraulic cylinder; 405. Rectangular block; 406. Upper clamping plate; 5. Cutting table; 6. Sawing machine; 7. Small belt conveyor; 8. Anti-slip mat; 9. Pressure sensor; 10. Controller; 11. Guide trough; 12. Guide block; 13. Limiting plate; 14. Guide slope; 15. Drop trough. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Reference Figure 1-4 A cutting and sawing auxiliary device for raw materials for air-raid shelter doors includes a main support 1 and a sawing machine 6. Several sets of conveying mechanisms 2 are installed at the top of the main support 1. A displacement mechanism 3 and an auxiliary mechanism 4 are installed on the side of the main support 1 near the sawing machine 6. The auxiliary mechanism 4 includes a fixed seat 401, which reciprocates to one side of the main support 1 via the displacement mechanism 3. A lower clamping plate 403 is fixedly installed on one side of the fixed seat 401. A hydraulic cylinder 404 is fixedly installed at the top of the fixed seat 401. A rectangular block 405 is fixedly installed at the telescopic end of the hydraulic cylinder 404. An upper clamping plate 406 is fixedly installed on one side of block 405. The upper clamping plate 406 and the lower clamping plate 403 are symmetrically arranged. A cutting table 5 is placed at the discharge end of the main support 1. The cutting table 5 is located directly below the saw 6. A small belt conveyor 7 is placed on the side of the cutting table 5 away from the main support 1. The conveying mechanism 2 includes two sets of rotating seats 201. The two sets of rotating seats 201 are symmetrically installed on the top of the main support 1. A rotating shaft 202 is rotatably installed between the two sets of symmetrically arranged rotating seats 201. A rotating roller 203 is fixedly installed on the outer surface of the rotating shaft 202.

[0032] By placing the steel above several sets of conveying mechanisms 2, with the auxiliary mechanism 4 located away from the conveying mechanism 2, and then using the displacement mechanism 3 to move the auxiliary mechanism 4 closer to the conveying mechanism 2, the lower clamping plate 403 and the upper clamping plate 406 move synchronously to the upper and lower sides of the steel end. The hydraulic cylinder 404 retracts, causing the rectangular block 405 and the upper clamping plate 406 to move downwards, clamping the steel. Then, the displacement mechanism 3 restarts, moving the auxiliary mechanism 4 towards the cutting table 5. At this point, the lower clamping plate 403 and the upper clamping plate 406, holding the steel end, move the steel between the sawing machine 6 and the cutting table 5. The sawing machine 6 then cuts the steel. This automatic feeding of the steel pipe via the auxiliary mechanism 4 and the stable clamping of the steel by the sawing machine 6 improve the cutting accuracy of the steel. After completion, the hydraulic cylinder 404 extends to release the clamping of the steel. The displacement mechanism 3 then drives the auxiliary mechanism 4 to move closer to the conveying mechanism 2 and clamp the rear of the steel. The displacement mechanism 3 then restarts, driving the auxiliary mechanism 4 to move towards the cutting table 5, so that the steel moves onto the small belt conveyor 7. The hydraulic cylinder 404 extends to release the clamping of the steel, and the small belt conveyor 7 automatically carries the cut steel to the next process. The displacement mechanism 3 and the auxiliary mechanism 4 realize the automatic feeding, clamping, and unloading of the steel, reducing manual operation and improving production efficiency and cutting accuracy. When the steel is moved by the displacement mechanism 3 and the auxiliary mechanism 4, since the rear of the steel is placed above the rotating roller 203, the movement of the steel drives the rotating roller 203 and the rotating shaft 202 to rotate, thereby improving the smoothness of the steel movement.

[0033] Reference Figure 1-3 The displacement mechanism 3 includes two sets of rotating seats 301, both sets of rotating seats 301 are rotatably mounted on one side of the main support 1, and the rotating ends of the two sets of rotating seats 301 are rotatably connected to transmission rollers 302. The two sets of transmission rollers 302 are connected by a transmission belt 303. The side wall of the main support 1 is fixedly mounted with a support 304 directly below the two sets of rotating seats 301. A reciprocating motor 305 is fixedly mounted on the top of one set of support 304. The reciprocating motor 305 is fixedly mounted to the output end of one set of transmission rollers 302. The other set of transmission rollers 302 is rotatably connected to the adjacent support 304. A fixed seat 401 is fixedly mounted on the top of the transmission belt 303. Anti-slip pads 8 are fixedly mounted on the opposite surfaces of the lower clamping plate 403 and the upper clamping plate 406.

[0034] The reciprocating motor 305 is started, driving a set of transmission rollers 302 to rotate. The transmission belt 303 drives another set of transmission rollers 302 to rotate, thereby driving the auxiliary mechanism 4 to move automatically. At the same time, by controlling the forward and reverse rotation of the output end of the reciprocating motor 305, the auxiliary mechanism 4 is driven to move back and forth, reducing the labor of workers and improving production efficiency. The two sets of anti-slip pads 8 improve the clamping effect on the steel, which is conducive to the stable movement of the steel when clamping it.

[0035] Reference Figure 2-4 A pressure sensor 9 is fixedly installed inside the anti-slip mat 8, and a controller 10 is fixedly installed on one side of the main support 1. The controller 10 is electrically connected to the pressure sensor 9 and the hydraulic cylinder 404. A limit plate 13 is fixedly installed at one end of the roller 203. The pressure sensor 9 detects the pressure between the anti-slip mat 8 and the steel in real time and transmits the signal to the controller 10. When the pressure reaches the set value, the controller 10 controls the hydraulic cylinder 404 to stop, preventing excessive pressure from damaging the steel material and improving the protection effect of the steel. The limit plate 13 limits the steel to prevent it from rolling off, improving its practicality during use.

[0036] Reference Figure 1-3 A guide groove 11 is fixedly installed at the top of the main support 1. The guide groove 11 is located on the side of the lower clamping plate 403 away from the fixed seat 401. A guide block 12 is slidably connected to the sliding end of the guide groove 11. One end of the guide block 12 is fixedly installed to the lower clamping plate 403. A guide slope 14 is provided on the top of the cutting table 5. A drop trough 15 is provided between the cutting table 5 and the small belt conveyor 7. When the lower clamping plate 403 moves, it drives the guide block 12 to move at the sliding end of the guide groove 11, which guides the movement of the lower clamping plate 403 and improves the smoothness of the movement of the lower clamping plate 403. The guide slope 14 guides the cut steel scrap, so that the steel scrap is discharged through the drop trough 15, avoiding the impact on the operation of the sawing machine 6 and facilitating subsequent unified processing.

[0037] Working principle: The steel is placed above several sets of conveying mechanisms 2, with the auxiliary mechanism 4 located away from the conveying mechanism 2. Then, the displacement mechanism 3 moves the auxiliary mechanism 4 closer to the conveying mechanism 2, causing the lower clamping plate 403 and the upper clamping plate 406 to move synchronously to the upper and lower sides of the steel end. The hydraulic cylinder 404 retracts, causing the rectangular block 405 and the upper clamping plate 406 to move downwards, clamping the steel. Then, the displacement mechanism 3 restarts, moving the auxiliary mechanism 4 towards the cutting table 5. At this time, the lower clamping plate 403 and the upper clamping plate 406, holding the end of the steel, move the steel between the sawing machine 6 and the cutting table 5. The sawing machine 6 cuts the steel, thus the auxiliary mechanism 4 drives the automatic feeding of the steel pipe, and the sawing machine 6 cuts the steel. During the cutting process, the steel is stably clamped. After cutting, the hydraulic cylinder 404 extends to release the clamp on the steel. The displacement mechanism 3 then drives the auxiliary mechanism 4 to move closer to the conveying mechanism 2 and clamp the steel at the rear. The displacement mechanism 3 then restarts, driving the auxiliary mechanism 4 to move towards the cutting table 5, so that the steel moves onto the small belt conveyor 7. The hydraulic cylinder 404 extends to release the clamp on the steel, and the small belt conveyor 7 automatically carries the cut steel to the next process. The reciprocating motor 305 starts, driving a set of transmission rollers 302 to rotate. The transmission belt 303 drives another set of transmission rollers 302 to rotate, thereby driving the auxiliary mechanism 4 to move automatically. At the same time, by controlling the forward and reverse rotation of the output end of the reciprocating motor 305, the auxiliary mechanism 4 is driven to reciprocate.

[0038] When the steel is moved by the displacement mechanism 3 and the auxiliary mechanism 4, the rear of the steel is placed above the rotating roller 203. The movement of the steel drives the rotating roller 203 and the rotating shaft 202 to rotate. The clamping effect of the steel is improved by the two sets of anti-slip pads 8.

[0039] Meanwhile, the pressure sensor 9 detects the pressure between the anti-slip mat 8 and the steel in real time and transmits the signal to the controller 10. When the pressure reaches the set value, the controller 10 controls the hydraulic cylinder 404 to stop. When the lower clamping plate 403 moves, it drives the guide block 12 to move at the sliding end of the guide groove 11, thus guiding the movement of the lower clamping plate 403.

[0040] In addition, the steel is limited by the limiting plate 13; the cut steel scrap is guided by the guiding slope 14 so that the steel scrap is discharged through the drop chute 15.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A human defense door raw material cutting saw auxiliary device, comprising a main support (1) and a saw bed (6), characterized in that, The top end of the main support (1) is provided with several groups of conveying mechanisms (2), one side of the main support (1) close to the sawing bed (6) is provided with a displacement mechanism (3) and an auxiliary mechanism (4), the auxiliary mechanism (4) comprises a fixed seat (401), the fixed seat (401) reciprocates on one side of the main support (1) through the displacement mechanism (3), one side of the fixed seat (401) is fixedly installed with a lower clamping plate (403), the top end of the fixed seat (401) is fixedly installed with a hydraulic cylinder (404), the telescopic end of the hydraulic cylinder (404) is fixedly installed with a rectangular block (405), one side of the rectangular block (405) is fixedly installed with an upper clamping plate (406), the upper clamping plate (406) is symmetrically arranged with the lower clamping plate (403), the discharge end of the main support (1) is placed with a cutting table (5), the cutting table (5) is located directly below the sawing bed (6), one side of the cutting table (5) away from the main support (1) is placed with a small belt conveyor (7).

2. The civil defense door raw material cutting saw auxiliary device according to claim 1, characterized in that, The displacement mechanism (3) comprises two groups of rotating seats two (301), both groups of rotating seats two (301) are rotatably installed on one side of the main support (1), the rotating ends of both groups of rotating seats two (301) are rotatably connected with transmission rollers (302), both groups of transmission rollers (302) are transmissionally connected with a transmission belt (303), the side wall of the main support (1) located directly below both groups of rotating seats two (301) is fixedly installed with a support (304), the top of one group of supports (304) is fixedly installed with a reciprocating motor (305), the reciprocating motor (305) is fixedly installed with the output end of one group of transmission rollers (302), the other group of transmission rollers (302) is rotatably connected with the adjacent support (304), and the fixed seat (401) is fixedly installed at the top end of the transmission belt (303).

3. The civil defense door raw material cutting saw auxiliary device according to claim 1, characterized in that, The conveying mechanism (2) comprises two groups of rotating seats one (201), both groups of rotating seats one (201) are symmetrically installed at the top end of the main support (1), and rotating shafts (202) are rotatably installed between both groups of symmetrically arranged rotating seats one (201), and rotating rollers (203) are fixedly installed on the outer surface of the rotating shaft (202).

4. The civil defense door raw material cutting saw auxiliary device according to claim 1, characterized in that, The opposite surfaces of the lower clamping plate (403) and the upper clamping plate (406) are fixedly installed with anti-skid pads (8).

5. The civil defense door raw material cutting saw auxiliary device according to claim 4, characterized in that, The inside of the anti-skid pad (8) is fixedly installed with a pressure sensor (9), one side of the main support (1) is fixedly installed with a controller (10), and the controller (10) is electrically connected with the pressure sensor (9) and the hydraulic cylinder (404).

6. The civil defense door raw material cutting saw auxiliary device according to claim 1, characterized in that, The top end of the main support (1) is fixedly installed with a guide groove body (11), the guide groove body (11) is located on the side of the lower clamping plate (403) away from the fixed seat (401), the sliding end of the guide groove body (11) is slidingly connected with a guide block (12), and one end of the guide block (12) is fixedly installed with the lower clamping plate (403).

7. The civil defense door raw material cutting saw auxiliary device according to claim 3, characterized in that, One end of the rotating roller (203) is fixedly installed with a limiting plate (13).

8. The civil defense door raw material cutting saw auxiliary device according to claim 1, characterized in that, The top of the cutting table (5) is provided with a guide slope (14), and a falling chute (15) is arranged between the cutting table (5) and the small belt conveyor (7).