Heating and ventilation pipeline cutting device for building heating and ventilation engineering

Abstract

The invention discloses a heating and ventilation pipeline cutting device for building heating and ventilation engineering, and relates to the technical field of heating and ventilation pipeline cutting devices.The heating and ventilation pipeline cutting device comprises a cutting table, the top of the cutting table is fixedly connected with a supporting frame used for fixing a heating and ventilation pipeline for cutting, the supporting frame is in a V shape, and sliding grooves are formed in the inner inclined walls of the two sides of the supporting frame; a sliding box is arranged in the sliding groove in a sliding mode, the end, located outside the sliding groove, of the sliding box is rotationally connected with a rotating box, and the rotating box communicates with the sliding box. According to the heating and ventilation pipeline cutting device for the building heating and ventilation engineering, the supporting frame, the rotating box, the air bag and other structures are arranged, the heating and ventilation pipeline cutting device is suitable for heating and ventilation pipelines with different diameters, meanwhile, the rotating box extrudes the heating and ventilation pipelines from top to bottom for positioning and makes contact with the heating and ventilation pipelines in multiple directions for extrusion, and the air bag adaptively expands and abuts against the outer walls of the heating and ventilation pipelines; the extrusion contact area is increased, abrasion is reduced, stable cutting is guaranteed, and the use efficiency of the heating and ventilation pipeline cutting device for building heating and ventilation engineering is improved.

Description

Technical Field

[0001] The invention relates to the technical field of HVAC pipe cutting devices, and in particular to a HVAC pipe cutting device for building HVAC engineering. Background Art

[0002] HVAC pipes are widely used, such as purification system return air ducts, central air conditioning ventilation ducts, industrial supply and exhaust ventilation ducts, environmental protection system suction and exhaust ducts, mining gas extraction pipes, mining rubber cloth air ducts, etc.

[0003] When installing HVAC pipes, since the pipes are long and inconvenient to carry and transfer, they usually need to be cut before installation.

[0004] When cutting, it is difficult to fix the pipe due to the smoothness of its outer wall. Most of the existing technologies use structures such as splints to fix the pipe on both sides, which is prone to tilting and poor stability. Manual assistance is usually required, and the efficiency needs to be improved.

[0005] Therefore, it is necessary to propose a HVAC pipe cutting device for building HVAC engineering to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a HVAC pipe cutting device for building HVAC engineering, so as to solve the problem that the pipe is difficult to fix due to the smoothness of its outer wall when cutting. Most of the existing technologies use structures such as splints to fix the pipe on both sides, which is prone to tilting and poor stability. Manual assistance is usually required, and the efficiency of use needs to be improved.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a HVAC pipe cutting device for building HVAC engineering, comprising a cutting table, a support frame for fixing the HVAC pipe for cutting is fixedly connected to the top of the cutting table, the support frame is in a V-shape, and slide grooves are provided on the inner inclined walls on both sides of the support frame, a slide box is slidably provided inside the slide groove, and one end of the slide box located outside the slide groove is rotatably connected to a rotating box, the rotating box is connected to the slide box, and an air bag is fixedly connected to the bottom of the rotating box, and the air bag is connected to the rotating box through a connecting component, and a translation mechanism for driving the slide box to slide along the slide groove is provided on the support frame;

[0008] The outside of the cutting table is provided with a cutting device for cutting HVAC pipes;

[0009] During cutting, the HVAC pipe is placed in the support frame, and the slide box slides downward inside the slide groove, driving the rotating box to squeeze the HVAC pipe from top to bottom for positioning. At the same time, the airbag expands adaptively to increase the extrusion contact area and reduce wear.

[0010] Preferably, the slide groove is T-shaped.

[0011] Preferably, the translation mechanism includes an outer cylinder fixedly arranged at the bottom of the slide groove, an inner cylinder is slidably arranged inside the outer cylinder, and the inner cylinder passes through the top end of the outer cylinder, the slide box is fixedly connected to the top end of the inner cylinder, the slide box is communicated with the inner cylinder, a third air hole is opened at the bottom end of the inner cylinder, and the inner cylinder is communicated with the outer cylinder through the third air hole.

[0012] Preferably, a control assembly is provided inside the outer cylinder, and the control assembly includes a magnetic block and an electromagnet. The magnetic block is fixedly connected to the bottom end of the inner cylinder, and the electromagnet is fixedly connected to the bottom end of the outer cylinder, and the magnetic block and the electromagnet cooperate with each other.

[0013] Preferably, square grooves are provided on the inner inclined walls on both sides of the support frame, and a guide assembly is arranged inside the square groove, and the guide assembly includes a rotating frame, an elastic telescopic rod and a guide column. The rotating frame is U-shaped, and the guide column is rotatably connected to the rotating frame, one end of the elastic telescopic rod is fixedly connected to the inner wall of the square groove, and the other end of the elastic telescopic rod is fixedly connected to the rotating frame.

[0014] Preferably, the guide column is arranged obliquely, and the guide column is parallel to the inner oblique wall corresponding to the support frame.

[0015] Preferably, at least two square grooves are provided.

[0016] Preferably, the connecting component includes a first air hole and a second air hole, the first air hole is opened on a side of the airbag close to the rotating box, the second air hole is opened on a side of the rotating box close to the airbag, the first air hole and the second air hole are distributed correspondingly, and the airbag is connected with the rotating box through the first air hole and the second air hole.

[0017] Preferably, the cutting device comprises a fixed plate, an electric push rod and a mounting plate, wherein the fixed plate is fixedly connected to the outer wall of the cutting table, the electric push rod is fixedly connected to the top of the fixed plate, and the mounting plate is fixedly connected to the telescopic end of the electric push rod.

[0018] Preferably, the cutting device further comprises a motor and a cutting blade, wherein the motor is fixedly connected to the top of the mounting plate, and the cutting blade is fixedly mounted on the telescopic end of the motor.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention is suitable for HVAC pipes of different diameters by arranging structures such as a support frame, a rotating box and an airbag, and is not easy to tilt. At the same time, the rotating box squeezes the HVAC pipe from top to bottom for positioning, and contacts and squeezes the HVAC pipe from multiple directions. The airbag expands adaptively and abuts against the outer wall of the HVAC pipe, increasing the extrusion contact area and reducing wear, ensuring stable cutting, and improving the use efficiency of the HVAC pipe cutting device for building HVAC engineering;

[0021] 2. When the HVAC pipe is positioned, the HVAC pipe will squeeze the guide column, so that the guide column and the rotating frame are retracted into the square groove, the elastic telescopic rod contracts, and the outer wall of the HVAC pipe can contact the inner inclined walls on both sides of the support frame to ensure the stability of positioning; after the HVAC pipe is released from the positioning, the reset elastic force of the elastic telescopic rod resets the guide column and the rotating frame and extends outward from the inside of the square groove. When the support frame moves, the guide column can be driven to rotate, reducing the wear between the HVAC pipe and the inner inclined wall of the support frame, and further improving the use efficiency of the HVAC pipe cutting device used in building HVAC engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram from the first perspective of the HVAC pipe cutting device for building HVAC engineering of the present invention.

[0023] Figure 2 This is a schematic structural diagram from a second perspective of the HVAC pipe cutting device for building HVAC engineering of the present invention.

[0024] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure in the middle.

[0025] Figure 4 This is a schematic structural diagram from a third perspective of the HVAC pipe cutting device for building HVAC engineering of the present invention.

[0026] Figure 5 It is a schematic diagram of the structure of the support frame and cutting equipment of the present invention.

[0027] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B in the middle.

[0028] Figure 7 For the present invention Figure 5 Enlarged schematic diagram of the structure at point C in the middle.

[0029] In the figure: 1. cutting table; 2. cutting equipment; 201. fixing plate; 202. electric push rod; 203. mounting plate; 204. motor; 205. cutting blade; 3. supporting frame; 4. slide groove; 5. slide box; 6. rotating box; 7. air bag; 8. first air hole; 9. second air hole; 10. inner tube; 11. outer tube; 12. electromagnet; 13. third air hole; 14. magnetic block; 15. square groove; 16. rotating frame; 17. elastic telescopic rod; 18. guide column. DETAILED DESCRIPTION

[0030] The present invention provides Figure 1 to Figure 7 The HVAC pipe cutting device for building HVAC engineering shown in the figure comprises a cutting table 1, and a cutting device 2 for cutting HVAC pipes is arranged outside the cutting table 1, and the cutting device 2 comprises a fixing plate 201, an electric push rod 202, and a mounting plate 203, wherein the fixing plate 201 is fixedly connected to the outer wall of the cutting table 1, the electric push rod 202 is fixedly connected to the top of the fixing plate 201, and the mounting plate 203 is fixedly connected to the telescopic end of the electric push rod 202. The cutting device 2 also comprises a motor 204 and a cutting blade 205, wherein the motor 204 is fixedly connected to the top of the mounting plate 203, and the cutting blade 205 is fixedly mounted on the telescopic end of the motor 204. The telescopic end of the electric push rod 202 is controlled to extend, and the motor 204 and the cutting blade 205 are driven to move upward through the mounting plate 203, and the motor 204 drives the cutting blade 205 to rotate, so as to cut the HVAC pipe.

[0031] During actual use, protective equipment can be set outside the cutting blade 205, and the protective equipment includes structures such as protective covers to ensure the safe use of the HVAC pipe cutting device; dust treatment equipment can also be set to suck the dust generated by cutting, and the dust treatment equipment includes structures such as suction hoods. Protective equipment and dust treatment equipment are both common existing technologies and will not be elaborated here.

[0032] Reference Figure 1 , Figure 5 As shown, in order to fix the HVAC pipe and improve the cutting stability, a support frame 3 for fixing the HVAC pipe for cutting is fixedly connected to the top of the cutting table 1. The support frame 3 is V-shaped. When in use, the HVAC pipe is placed in the support frame 3. Since the support frame 3 is V-shaped, it can be applied to HVAC pipes of different diameters and is not easy to tilt, thereby improving the applicability of the HVAC pipe cutting device for building HVAC engineering.

[0033] Slide grooves 4 are provided on the inner inclined walls on both sides of the support frame 3 , and a slide box 5 is slidably arranged inside the slide groove 4 . The slide groove 4 and the slide box 5 are both T-shaped, which improves the stability of the slide box 5 sliding inside the slide groove 4 .

[0034] Reference Figure 6As shown, one end of the slide box 5 located outside the slide slot 4 is rotatably connected to the rotating box 6, and the rotating box 6 is connected to the slide box 5. The slide box 5 and the rotating box 6 are connected by a rotating shaft, and a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixed to the slide box 5, and the other end is fixed to the rotating box 6. There is a certain damping feeling between the rotating box 6 and the slide box 5, and there will be no random rotation. Before placing the HVAC pipe, the operator rotates the rotating box 6 so that the end of the rotating box 6 away from the slide box 5 is attached to the inner inclined wall of the support frame 3, which does not affect the placement of the HVAC pipe in the support frame 3; and after the HVAC pipe is placed, the operator controls the rotating box 6 to reset (same Figure 6 As shown), when the slide box 5 slides downward inside the slide groove 4, it drives the rotating box 6 to squeeze the HVAC pipe from top to bottom for positioning. The two rotating boxes 6 cooperate with the V-shaped support frame 3 to contact and extrude the HVAC pipe from multiple directions, thereby improving the stability of the HVAC pipe positioning.

[0035] During specific use, a pressure sensor may be provided to cooperate with the rotating box 6 and other structures to monitor the extrusion force and avoid excessive extrusion. The pressure sensor and its working principle are both existing common technologies and will not be described in detail here.

[0036] In order to further expand the contact area, an airbag 7 is fixedly connected to the bottom of the rotating box 6, and the airbag 7 is connected to the rotating box 6 through a connecting component. The connecting component includes a first air hole 8 and a second air hole 9. The first air hole 8 is opened on the side of the airbag 7 close to the rotating box 6, and the second air hole 9 is opened on the side of the rotating box 6 close to the airbag 7. The first air hole 8 and the second air hole 9 are distributed correspondingly, and the airbag 7 is connected to the rotating box 6 through the first air hole 8 and the second air hole 9.

[0037] The support frame 3 is provided with a translation mechanism for driving the slide box 5 to slide along the slide groove 4. The translation mechanism includes an outer cylinder 11 fixedly arranged at the bottom of the slide groove 4, the outer cylinder 11 is fixedly connected to the bottom of the slide groove 4, the inner cylinder 10 is slidably arranged inside the outer cylinder 11, and the inner cylinder 10 passes through the top of the outer cylinder 11, the slide box 5 is fixedly connected to the top of the inner cylinder 10, the slide box 5 is communicated with the inner cylinder 10, and the bottom of the inner cylinder 10 is provided with a third air hole 13, and the inner cylinder 10 is communicated with the outer cylinder 11 through the third air hole 13. When the inner cylinder 10 slides and recovers to the inside of the outer cylinder 11, the gas inside the outer cylinder 11 enters the inside of the airbag 7 through the third air hole 13, the inner cylinder 10, the slide box 5, the rotating box 6, the second air hole 9 and the first air hole 8, so that the airbag 7 expands and becomes larger; and when the inner cylinder 10 extends outward from the inside of the outer cylinder 11, the gas inside the airbag 7 flows back to the inside of the outer cylinder 11, and the airbag 7 shrinks and becomes smaller.

[0038] A control assembly is arranged inside the outer cylinder 11, and the control assembly includes a magnetic block 14 and an electromagnet 12. The magnetic block 14 is fixedly connected to the bottom end of the inner cylinder 10, and the electromagnet 12 is fixedly connected to the bottom end of the outer cylinder 11. The magnetic block 14 and the electromagnet 12 cooperate. When in use, a power supply device can be arranged outside the support frame 3 to supply power to the electromagnet 12. The power supply device includes a battery and other structures. The power supply device is an existing common technology and will not be described in detail here.

[0039] When the cam 6 is in the air, the pressure relief valve 14 is lifted up and the pressure relief valve 14 is lifted up, so that the cam 6 is in the airtight position, and the cam 6 is in the airtight position ...

[0040] The telescopic end of the electric push rod 202 is controlled to extend, and the motor 204 and the cutting blade 205 are driven to move upward through the mounting plate 203. The motor 204 drives the cutting blade 205 to rotate, and the HVAC pipe is cut.

[0041] Taking into account the need to move the HVAC pipe in the support frame 3, in order to reduce the wear between the HVAC pipe and the inner inclined wall of the support frame 3, square grooves 15 are opened on the inner inclined walls on both sides of the support frame 3, and at least two square grooves 15 are set on the inner inclined wall on each side. There is a certain distance between the two square grooves 15, which is convenient for stable support of the HVAC pipe; a guide assembly is arranged inside the square groove 15, and the guide assembly includes a rotating frame 16, an elastic telescopic rod 17 and a guide column 18. The rotating frame 16 is U-shaped, and the guide column 18 is rotatably connected to the rotating frame 16. The guide column 18 is tilted, and the guide column 18 is parallel to the corresponding inner inclined wall of the support frame 3. One end of the elastic telescopic rod 17 is fixedly connected to the inner wall of the square groove 15, and the other end of the elastic telescopic rod 17 is fixedly connected to the rotating frame 16.

[0042] When the HVAC pipe is positioned, the HVAC pipe will squeeze the guide column 18, so that the guide column 18 and the rotating frame 16 are retracted into the square groove 15, the elastic telescopic rod 17 contracts, and the outer wall of the HVAC pipe can contact the inner oblique walls on both sides of the support frame 3 to ensure the stability of the positioning; and after the HVAC pipe is released from the positioning, the reset elastic force of the elastic telescopic rod 17 resets the guide column 18 and the rotating frame 16 and extends outward from the inside of the square groove 15. When the support frame 3 moves, the guide column 18 can be driven to rotate, thereby reducing the wear between the HVAC pipe and the inner oblique wall of the support frame 3, and further improving the use efficiency of the HVAC pipe cutting device for building HVAC engineering.

[0043] Working principle: the operator rotates the rotating box 6 so that the end of the rotating box 6 away from the sliding box 5 is attached to the inner inclined wall of the support frame 3 without affecting the placement of the HVAC pipe in the support frame 3. The HVAC pipe is placed in the support frame 3. After the HVAC pipe is placed, the rotating box 6 is controlled to reset; the electromagnet 12 is started to control the magnetism of the electromagnet 12 and the magnetic block 14 on the side close to each other to be opposite. Under the action of the mutual attraction force, the sliding box 5 slides downward inside the slide groove 4, driving the rotating box 6 to squeeze the HVAC pipe from top to bottom for positioning; at the same time, the inner cylinder 10 slides back to the inside of the outer cylinder 11, and the gas inside the outer cylinder 11 enters the inside of the air bag 7 through the third air hole 13, the inner cylinder 10, the sliding box 5, the rotating box 6, the second air hole 9 and the first air hole 8, so that the air bag 7 expands adaptively and abuts against the outer wall of the HVAC pipe, increasing the extrusion contact area and reducing wear, ensuring the stability of the HVAC pipe positioning, and facilitating the cutting equipment 2 to cut.

[0044] The telescopic end of the electric push rod 202 is controlled to extend, and the motor 204 and the cutting blade 205 are driven to move upward through the mounting plate 203. The motor 204 drives the cutting blade 205 to rotate, and the HVAC pipe is cut.

Claims

1. A HVAC pipe cutting device for building HVAC engineering, comprising a cutting table (1), characterized in that: The top of the cutting table (1) is fixedly connected with a support frame (3) for fixing the HVAC pipe for cutting, the support frame (3) is V-shaped, and the inner inclined walls on both sides of the support frame (3) are provided with slide grooves (4), and a slide box (5) is slidably arranged inside the slide groove (4), and the end of the slide box (5) located outside the slide groove (4) is rotatably connected with a rotating box (6), and the rotating box (6) is connected with the slide box (5), and the bottom of the rotating box (6) is fixedly connected with an air bag (7), and the air bag (7) is connected with the rotating box (6) through a connecting component, and the support frame (3) is provided with a translation mechanism for driving the slide box (5) to slide along the slide groove (4); A cutting device (2) for cutting HVAC pipes is arranged outside the cutting table (1); During cutting, the HVAC pipe is placed in the support frame (3), and the slide box (5) slides downward inside the slide groove (4), driving the rotating box (6) to squeeze the HVAC pipe from top to bottom for positioning, while the air bag (7) expands adaptively to increase the squeezing contact area and reduce wear.

2. A HVAC pipe cutting device for building HVAC engineering according to claim 1, characterized in that: The slide groove (4) is in a T shape.

3. The HVAC pipe cutting device for building HVAC engineering according to claim 1, characterized in that: The translation mechanism comprises an outer cylinder (11) fixedly arranged at the bottom of the slide groove (4), an inner cylinder (10) is slidably arranged inside the outer cylinder (11), and the inner cylinder (10) passes through the top end of the outer cylinder (11), the slide box (5) is fixedly connected to the top end of the inner cylinder (10), the slide box (5) is communicated with the inner cylinder (10), and a third air hole (13) is opened at the bottom end of the inner cylinder (10), and the inner cylinder (10) is communicated with the outer cylinder (11) through the third air hole (13).

4. A HVAC pipe cutting device for building HVAC engineering according to claim 3, characterized in that: A control component is arranged inside the outer cylinder (11), and the control component comprises a magnetic block (14) and an electromagnet (12). The magnetic block (14) is fixedly connected to the bottom end of the inner cylinder (10), and the electromagnet (12) is fixedly connected to the bottom end of the outer cylinder (11). The magnetic block (14) and the electromagnet (12) cooperate with each other.

5. The HVAC pipe cutting device for building HVAC engineering according to claim 1, characterized in that: The inner oblique walls on both sides of the support frame (3) are provided with square grooves (15), and a guide assembly is arranged inside the square groove (15). The guide assembly comprises a rotating frame (16), an elastic telescopic rod (17) and a guide column (18). The rotating frame (16) is U-shaped, and the guide column (18) is rotatably connected to the rotating frame (16). One end of the elastic telescopic rod (17) is fixedly connected to the inner wall of the square groove (15), and the other end of the elastic telescopic rod (17) is fixedly connected to the rotating frame (16).

6. A HVAC pipe cutting device for building HVAC engineering according to claim 5, characterized in that: The guide column (18) is arranged obliquely, and the guide column (18) is parallel to the inner oblique wall corresponding to the support frame (3).

7. A HVAC pipe cutting device for building HVAC engineering according to claim 1, characterized in that: At least two square grooves (15) are provided.

8. The HVAC pipe cutting device for building HVAC engineering according to claim 1, characterized in that: The connecting component comprises a first air hole (8) and a second air hole (9); the first air hole (8) is provided on a side of the air bag (7) close to the rotating box (6); the second air hole (9) is provided on a side of the rotating box (6) close to the air bag (7); the first air hole (8) and the second air hole (9) are distributed correspondingly; the air bag (7) is connected with the rotating box (6) through the first air hole (8) and the second air hole (9).

9. A HVAC pipe cutting device for building HVAC engineering according to claim 1, characterized in that: The cutting device (2) comprises a fixing plate (201), an electric push rod (202), and a mounting plate (203); the fixing plate (201) is fixedly connected to the outer wall of the cutting table (1); the electric push rod (202) is fixedly connected to the top of the fixing plate (201); and the mounting plate (203) is fixedly connected to the telescopic end of the electric push rod (202).

10. A HVAC pipe cutting device for building HVAC engineering according to claim 9, characterized in that: The cutting device (2) further comprises a motor (204) and a cutting blade (205), wherein the motor (204) is fixedly connected to the top of the mounting plate (203), and the cutting blade (205) is fixedly mounted on the telescopic end of the motor (204).

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