An opening device for Roots pump processing and its usage method

Abstract

The present invention relates to the field of Roots pump processing, specifically an opening device for Roots pump processing and its use method, including a base. The top of the base is fixedly connected with a pushing bin. The top of the base is fixedly connected with a cylinder, and a pneumatic rod is connected to the cylinder. The top of the pneumatic rod is fixedly connected with a moving seat, and the top of the moving seat is fixedly connected with a moving frame. A drill rod slides inside the moving frame. The front end of the drill rod is bolted with a drill bit, and a boring mechanism is arranged on the drill rod. For this opening device for Roots pump processing, through the setting of several tool holders, boring operation can be carried out synchronously during drilling, reducing the operation process, increasing the processing efficiency of workpieces. And through the setting of the regulation bin and the adjustment sleeve, it enables the staff to make additional settings, set the diameter of the boring according to requirements, can be applicable to different processing specifications, and is convenient for the staff to operate.

Description

Technical Field

[0001] The present invention relates to the field of Roots pump processing, and specifically to a hole-opening device for Roots pump processing and its usage method. Background Technique

[0002] A Roots pump refers to a variable-volume vacuum pump in which two leaf-shaped rotors that rotate synchronously in opposite directions are installed inside the pump, and there are small gaps between the rotors and between the rotors and the inner wall of the pump housing without contacting each other. It is widely used in industries such as petroleum, chemical industry, metallurgy, and textile. Vacuum pump accessories, as vacuum pump silencers, are used for noise control of vacuum pumps. When processing a Roots pump, it is necessary to open holes at corresponding positions to facilitate the installation of components.

[0003] It is found that the following problems have not been well solved: When processing a Roots pump, after opening a hole, it is necessary to perform fine boring on the hole through boring processing to ensure the stability during the operation of subsequent equipment. However, boring processing requires frequent replacement of equipment, which is not convenient for synchronously performing boring operations during hole opening to reduce the operation process and increase processing efficiency, and is not convenient for the use of the equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide a hole-opening device for Roots pump processing and its usage method to solve the problem of low processing efficiency proposed in the above background technique. To achieve the above purpose, the present invention provides the following technical solution: A hole-opening device for Roots pump processing, including a base, a pushing chamber is fixedly connected to the top of the base, a cylinder is fixedly connected to the top of the base, and a pneumatic rod is connected to the cylinder. The top of the pneumatic rod is fixedly connected to a moving seat, and a moving frame is fixedly connected to the top of the moving seat. A drill rod slides inside the inner wall of the moving frame. The front end of the drill rod is bolted with a drill bit, and a boring mechanism is arranged on the drill rod;

[0005] The rear end of the drill rod is splined with a power rod, and the rear end of the power rod is fixedly connected to a motor, and the outer wall of the power rod is rotatably connected to the inner wall of the pushing chamber. The outer wall of the drill rod is splined with a bushing, and the bushing is rotatably connected to the inner wall of the pushing chamber;

[0006] The boring mechanism includes a connecting frame, the connecting frame is sleeved on the outer wall of the drill rod, the top of the connecting frame is hinged with a left hinge rod, the front end of the left hinge rod is hinged with a tool holder, and a boring tool is installed on the top of the tool holder through a screw. The right side wall of the tool holder is hinged with a right hinge rod, and the end of the right hinge rod is hinged to the top of the drill rod. A control member is connected to the rear wall of the connecting frame;

[0007] Damping bearings are used at the shaft ends of the left hinge rod and the right hinge rod.

[0008] Preferably, a plurality of tool holders are symmetrically arranged about the axis of the drill rod, and the plurality of tool holders are initially in a retracted state.

[0009] Preferably, the control component includes a regulating chamber, which is arranged on the drill rod through a spline sleeve, and the front end of the regulating chamber is fixedly connected to the rear end of the connecting frame, a plurality of equally spaced horizontally distributed limit grooves are provided at the top of the regulating chamber, and the tops of the plurality of limit grooves are connected to observation ports, an adjustment sleeve is inserted into the interior of the regulating chamber, and an inner groove is provided at the top of the adjustment sleeve, an elastic sheet is fixedly connected to the inner wall of the inner groove, and a protrusion is fixed to the top of the elastic sheet, and a limit rod is connected to the inner wall of the adjustment sleeve through a telescopic spring.

[0010] Preferably, the inner diameters of the plurality of limit grooves match the outer diameters of the protrusions, and a rubber pad is sleeved on the outer wall of the protrusions.

[0011] Preferably, the control member further comprises a locking chamber, the locking chamber is arranged on the outer wall of the drill pipe through a spline sleeve, and a receiving chamber is provided at the front end of the locking chamber, and the receiving chamber is plugged with the adjustment sleeve, a rotating chamber is provided in the inner wall of the locking chamber, a through groove is provided on the inner wall of the rotating chamber, and the through groove is connected with the receiving chamber, and the through groove extends to the inner wall of the receiving chamber, a toggle ring is rotatably connected in the inner wall of the rotating chamber, a spiral groove is provided on the inner wall of the toggle ring, and a vertical groove is connected on the side wall of the spiral groove, and the vertical groove is connected with the through groove, and a locking rod is connected in the inner wall of the toggle ring through a strong spring;

[0012] The inner diameter of the through groove matches the outer diameter of the limiting rod;

[0013] A spring telescopic rod is fixedly connected to the top wall of the accommodating cavity.

[0014] Preferably, the boring mechanism further comprises an inner cavity, the inner cavity is opened inside the drill rod, and a trigger plate is rotatably connected in the inner wall of the inner cavity, and a torsion spring is installed at the axial end of the trigger plate, the trigger plate is set in an L-shaped structure, and the front section of the trigger plate is closely connected to a movable rod, a reset spring is sleeved on the outer wall of the movable rod, and the front end of the movable rod is plugged into the push bin;

[0015] A plurality of plug-in ports are arranged on the outer wall of the drill rod, and a pushing piece is arranged at the front end of each of the plug-in ports.

[0016] Preferably, the pushing member includes a support frame, and the outer wall of the support frame is fixedly connected to the inner wall of the inner cavity, the bottom end of the support frame is fixedly connected to a lower tooth plate, and the top end of the lower gear plate is meshed with a pushing gear, both side shaft ends of the pushing gear are rotatably connected to push rods, and the outer wall of the push rod is slidably connected to the outer wall of the support frame, and the top end of the pushing gear is meshed with an upper tooth plate, and the outer wall of the upper tooth plate is slidably connected to the support frame;

[0017] The front end of the movable rod is inserted into a locking groove, and the locking groove is opened on the inner wall of the bushing on the outer wall of the drill pipe.

[0018] A method for using an opening device for machining a Roots pump includes the following steps:

[0019] S1. First, the staff fixes the Roots pump assembly on one side of the base so that the Roots pump assembly and the drill pipe are on the same horizontal line. Then, the device is started. The cylinder pushes the moving seat through the pneumatic rod, and the moving seat drives the moving frame to move forward, so that the moving frame slides forward on the drill pipe. The locking chamber at the front end of the moving frame moves forward synchronously. The accommodating chamber in the inner wall at the front end of the locking chamber fits with the front end of the adjusting sleeve. At this time, the side wall of the locking chamber contacts the limiting rods on the side wall of the adjusting sleeve. Since the limiting rods are connected to the side wall of the adjusting sleeve through strong springs, when initially contacting, the locking chamber pushes the adjusting sleeve forward through the two limiting rods;

[0020] S2. Then, before using the equipment, the elastic piece can be pressed down. The elastic piece deflects and moves downward, so that the convex points are received into the adjusting sleeve. At this time, the adjusting sleeve is pushed forward, and the adjusting sleeve is received into the control chamber. The staff controls the depth of insertion of the adjusting sleeve into the control chamber according to the requirements so that it can be the same as the required boring width. Then, the elastic piece is released, so that the convex points are inserted into the corresponding limiting grooves for locking;

[0021] S3. When the adjusting sleeve moves forward, the adjusting sleeve will first push the control chamber forward synchronously. The front end of the control chamber pushes the connecting frame to slide on the drill pipe. Due to the arrangement of the connecting frame through two groups of left hinge rods and right hinge rods that are arc-shaped and cross-set, when the connecting frame is pushed forward, the tool holder will be pushed up synchronously. At the same time, since the locking groove is a horizontal groove, when the connecting frame moves forward, because the shaft ends of the left hinge rod and the right hinge rod are both provided with damping bearings, the drill pipe will slide a certain distance in the locking groove through the movable rod, so that the drill bit at the front end of the drill pipe closely adheres to the surface of the Roots pump assembly to open a hole, and at the same time, part of the boring mechanism is moved into the opened hole. When the initial hole opening is completed, the drill pipe is temporarily unable to move due to the limitation of the locking groove. At this time, the connecting frame continues to move forward, overcoming the resistance of the two groups of damping bearings, and lifting the boring tool to fit with the inner wall of the hole of the Roots pump assembly;

[0022] S4. When the boring tool fits the inner wall of the Roots pump assembly, the tool holder cannot rise, and the locking chamber continues to move forward to squeeze the limit rod into the accommodating cavity. The front end of the limit rod contacts the spiral groove in the toggle ring through the through groove, so that the locking chamber moves forward, and the limit rod can continue to slide in the spiral groove, pushing the toggle ring to rotate slightly. The locking rod in the inner wall of the toggle ring slides to the plug-in interface on the drill rod. The front end of the locking rod pushes the push rod forward, and the push rod drives the push gear to rotate on the lower gear. The rotation of the push gear pushes the upper gear forward in the opposite direction. The forward movement of the upper gear pushes the trigger plate to rotate inward, and the end of the trigger plate is separated from the movable rod. The movable rod is retracted into the inside of the drill rod through the reset spring. At this time, the drill rod is unlocked. Since the locking chamber is locked with the drill rod through the internal toggle ring, it can drive the drill rod forward to perform drilling and boring operations.

[0023] S5. At the same time, the locking chamber and the adjusting sleeve are plugged and arranged, and the spring telescopic rod in the accommodating cavity will be first contracted and then released, squeezing the elastic sheet, and the convex point on the elastic sheet is separated from the regulating chamber. At this time, the regulating chamber and the adjusting sleeve can be contracted with each other, squeezing the internal spring, so that after the locking chamber is locked, when drilling is continued, as the boring tool gradually expands the hole diameter, the spring is released little by little, pushing the boring tool to rotate, and the diameter gradually increases until the elastic force is released, so that the boring is completed;

[0024] Finally, the processing is completed, and the locking bin is driven backward by the movable frame to reset the drill rod. The adjusting sleeve is then pulled out of the locking bin, causing the toggle ring to rotate in the opposite direction. The locking rod compresses the spring and releases the lock on the drill rod. At the same time, due to the loss of the squeezing of the locking rod, the trigger plate is reset, and the movable rod is pushed forward again to plug the locking rod into the locking groove for reset.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] In the present invention, by arranging a plurality of tool holders, boring operations can be performed simultaneously with drilling operations, thus reducing the operation process and increasing the processing efficiency of the workpiece.

[0027] In the present invention, by setting the control chamber and the adjustment sleeve, the staff can make additional settings and set the diameter of the boring hole according to the needs, which can be applicable to different processing specifications and is convenient for the staff to operate.

[0028] In the present invention, through the setting of the locking chamber, the locking state of itself and the drill rod can be switched synchronously, so as to facilitate the control of the state of boring processing and the operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the general assembly of the present invention;

[0030] Figure 2It is a schematic diagram of the general assembly cross-sectional structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the three-dimensional structure of the boring mechanism in the present invention;

[0032] Figure 4 The control chamber and the adjustment sleeve connection structure of the present invention are shown in FIG. Figure 1 ;

[0033] Figure 5 It is a schematic diagram of the structure of the tool holder in the present invention;

[0034] Figure 6 The control chamber and the adjustment sleeve connection structure of the present invention are shown in FIG. Figure 2 ;

[0035] Figure 7 This is a schematic diagram of the locking chamber structure in the present invention;

[0036] Figure 8 It is a schematic diagram of the cross-sectional structure of the locking chamber in the present invention;

[0037] Figure 9 The cross-sectional structure diagram of the drill pipe in the present invention is shown in FIG. Figure 1 ;

[0038] Figure 10 The cross-sectional structure diagram of the drill pipe in the present invention is shown in FIG. Figure 2 ;

[0039] Figure 11 For the present invention Figure 10 The enlarged structural diagram at A in the middle;

[0040] Figure 12 It is a schematic diagram of the locking groove and movable rod structure in the present invention.

[0041] In the figure: 1, base; 2, push bin; 3, moving seat; 4, moving frame; 5, drill rod; 6, drill bit; 7, boring mechanism; 71, connecting frame; 72, left hinge rod; 73, tool holder; 74, boring tool; 75, right hinge rod; 76, control member; 761, regulating bin; 762, limit groove; 763, adjustment sleeve; 764, inner groove; 765, elastic sheet; 766, convex point; 767, limit rod; 768, locking bin; 769, accommodating cavity ; 7610, rotating cavity; 7611, through groove; 7612, toggle ring; 7613, spiral groove; 7614, vertical groove; 7615, locking rod; 7616, spring telescopic rod; 77, inner cavity; 78, trigger plate; 79, movable rod; 710, plug interface; 711, push member; 7111, support frame; 7112, lower tooth plate; 7113, pushing gear; 7114, push rod; 7115, upper tooth plate; 712, locking groove. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] Please refer to Figures 1 to 12 , the present invention provides a technical solution: a hole-opening device for the processing of a Roots pump, including a base 1, a pushing chamber 2 is fixedly connected to the top end of the base 1, a cylinder is fixedly connected to the top end of the base 1, and a pneumatic rod is connected to the cylinder. The top end of the pneumatic rod is fixedly connected to a moving seat 3, and a moving frame 4 is fixedly connected to the top end of the moving seat 3. A drill rod 5 slides inside the inner wall of the moving frame 4. The front end of the drill rod 5 is bolted with a drill bit 6, and a boring mechanism 7 is arranged on the drill rod 5;

[0044] The rear end of the drill rod 5 is splined with a power rod, the rear end of the power rod is fixedly connected with a motor, and the outer wall of the power rod is rotatably connected with the inner wall of the pushing chamber 2. The outer wall of the drill rod 5 is splined with a bushing, and the bushing is rotatably connected with the inner wall of the pushing chamber 2;

[0045] The boring mechanism 7 includes a connecting frame 71, the connecting frame 71 is sleeved on the outer wall of the drill rod 5, the top end of the connecting frame 71 is hinged with a left hinge rod 72, the front end of the left hinge rod 72 is hinged with a tool holder 73, and a boring tool 74 is installed on the top end of the tool holder 73 through a screw. The right side wall of the tool holder 73 is hinged with a right hinge rod 75, and the end of the right hinge rod 75 is hinged with the top end of the drill rod 5. A control member 76 is connected to the rear wall of the connecting frame 71;

[0046] Damping bearings are used at the shaft ends of the left hinge rod 72 and the right hinge rod 75.

[0047] In this embodiment, as Figure 4 and Figure 5 shown, a plurality of tool holders 73 are symmetrically arranged about the axis of the drill rod 5, and the plurality of tool holders 73 are initially in a retracted state. When the tool holders 73 are unfolded, due to the damping setting at the shaft ends of the left hinge rod 72 and the right hinge rod 75, the drill rod 5 can be first pushed forward to perform the drilling operation, and then the boring operation is performed.

[0048] In this embodiment, as Figure 4 and Figure 6As shown, the control member 76 includes a regulating chamber 761, which is arranged on the drill rod 5 through a spline sleeve, and the front end of the regulating chamber 761 is fixedly connected to the rear end of the connecting frame 71, and a plurality of equally spaced horizontally distributed limiting grooves 762 are provided at the top of the regulating chamber 761, and the tops of the plurality of limiting grooves 762 are connected to observation ports, an adjustment sleeve 763 is inserted into the inside of the regulating chamber 761, and an inner groove 764 is provided at the top of the adjusting sleeve 763, an elastic sheet 765 is fixedly connected to the inner wall of the inner groove 764, and a convex point 766 is fixed to the top of the elastic sheet 765, and a limiting rod 767 is connected to the inner wall of the adjusting sleeve 763 through a telescopic spring, and the setting of the elastic sheet 765 and the convex point 766 facilitates the staff to control the diameter of the boring hole.

[0049] In this embodiment, Figure 6 As shown, the inner diameters of the plurality of limiting grooves 762 match the outer diameters of the protrusions 766 , and rubber pads are sleeved on the outer walls of the protrusions 766 , so that the protrusions 766 can be stably inserted into the limiting grooves 762 .

[0050] In this embodiment, Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the control member 76 also includes a locking chamber 768, which is sleeved on the outer wall of the drill rod 5 through a spline, and a receiving chamber 769 is provided at the front end of the locking chamber 768, and the receiving chamber 769 is plugged with the adjustment sleeve 763, and a rotating chamber 7610 is provided in the inner wall of the locking chamber 768, and a through groove 7611 is provided on the inner wall of the rotating chamber 7610, and the through groove 7611 and the receiving chamber 769 are connected to each other. The through groove 7611 extends to the inner wall of the accommodating cavity 769, a toggle ring 7612 is rotatably connected in the inner wall of the rotating cavity 7610, a spiral groove 7613 is provided on the inner wall of the toggle ring 7612, and a vertical groove 7614 is connected on the side wall of the spiral groove 7613, and the vertical groove 7614 is connected to the through groove 7611, and a locking rod 7615 is connected to the inner wall of the toggle ring 7612 via a strong spring;

[0051] The inner diameter of the through slot 7611 matches the outer diameter of the limiting rod 767;

[0052] A spring telescopic rod 7616 is fixedly connected to the top wall of the accommodating cavity 769 , and the rotation of the toggle ring 7612 is controlled by the setting of the spiral groove 7613 , thereby controlling the locking state of the locking chamber 768 and the drill rod 5 .

[0053] In this embodiment, Figure 3 , Figure 4 , Figure 9 , Figure 10 andFigure 12 As shown, the boring mechanism 7 further includes an inner cavity 77 which is opened inside the drill rod 5. A trigger plate 78 is rotatably connected to the inner wall of the inner cavity 77, and a torsion spring is installed at the shaft end of the trigger plate 78. The trigger plate 78 is arranged in an L-shaped structure, and a movable rod 79 is attached to the front section of the trigger plate 78. A return spring is sleeved on the outer wall of the movable rod 79, and the front end of the movable rod 79 is inserted into the pushing bin 2;

[0054] A plurality of insertion openings 710 are opened on the outer wall of the drill rod 5, and a pushing member 711 is arranged at the front end of each of the plurality of insertion openings 710. Through the arrangement of the trigger plate 78, when the locking bin 768 is locked, the trigger plate 78 can be synchronously driven to release the locking between the drill rod 5 and the pushing bin 2.

[0055] In this embodiment, as Figure 9 、 Figure 10 and Figure 11 shown, the pushing member 711 includes a support frame 7111, and the outer wall of the support frame 7111 is fixedly connected to the inner wall of the inner cavity 77. A lower toothed plate 7112 is fixedly connected to the bottom end of the support frame 7111, and a pushing gear 7113 is meshed with the top end of the lower gear plate. Push rods 7114 are rotatably connected to the shaft ends on both sides of the pushing gear 7113, and the outer walls of the push rods 7114 are slidably connected to the outer wall of the support frame 7111. Moreover, an upper toothed plate 7115 is meshed with the top end of the pushing gear 7113, and the outer wall of the upper toothed plate 7115 is slidably connected to the support frame 7111;

[0056] The front end of the movable rod 79 is inserted into a locking groove 712 which is opened on the inner wall of the shaft sleeve on the outer wall of the drill rod 5. Through the arrangement of the upper toothed plate 7115, the lower toothed plate 7112 and the pushing gear 7113, the thrust of the locking rod 7615 can be amplified to stably push the trigger plate 78 to deflect.

[0057] In this embodiment, as Figures 1 to 12 shown, a usage method of a hole-opening device for Roots pump processing includes the following steps:

[0058] S1. First, the staff fixes the Roots pump assembly on one side of the base 1 so that the Roots pump assembly is on the same horizontal line as the drill pipe 5. Then, the device is started. The cylinder pushes the moving seat 3 through the pneumatic rod, and the moving seat 3 drives the moving frame 4 to move forward, causing the moving frame 4 to slide forward on the drill pipe 5. The locking chamber 768 at the front end of the moving frame 4 moves forward synchronously. The accommodating cavity 769 in the inner wall at the front end of the locking chamber 768 fits against the front end of the adjusting sleeve 763. At this time, the side wall of the locking chamber 768 contacts the limiting rod 767 on the side wall of the adjusting sleeve 763. Since the limiting rod 767 is connected to the side wall of the adjusting sleeve 763 through a strong spring, when initially contacting, the locking chamber 768 pushes the adjusting sleeve 763 forward through the two limiting rods 767;

[0059] S2. Next, before using the equipment, by pressing down the elastic piece 765, the elastic piece 765 deflects and moves downward, causing the bump 766 to be retracted into the adjusting sleeve 763. At this time, pushing the adjusting sleeve 763 forward, the adjusting sleeve 763 is retracted into the control chamber 761. The staff controls the depth of the adjusting sleeve 763 inserted into the control chamber 761 according to the requirements so that it can be the same as the required boring width. Then, release the elastic piece 765, causing the bump 766 to be inserted into the corresponding limiting groove 762 for locking;

[0060] S3. When the adjusting sleeve 763 moves forward, the adjusting sleeve 763 will first push the control chamber 761 forward synchronously. The front end of the control chamber 761 pushes the connecting frame 71 to slide on the drill pipe 5. Due to the arrangement of the left hinge rod 72 and the right hinge rod 75 which are arranged in two groups in an arc-crossed manner, when the connecting frame 71 is pushed forward, the tool holder 73 will be pushed up synchronously. At the same time, since the locking groove 712 is arranged as a horizontal groove, when the connecting frame 71 moves forward, because the shaft ends of the left hinge rod 72 and the right hinge rod 75 are both provided with damping bearings, the drill pipe 5 will slide a certain distance in the locking groove 712 through the movable rod 79. As a result, the drill bit 6 at the front end of the drill pipe 5 closely adheres to the surface of the Roots pump assembly to open a hole, and at the same time, part of the boring mechanism 7 is moved into the opened hole. When the initial hole opening is completed, the drill pipe 5 is temporarily unable to move due to the limitation of the locking groove 712. At this time, the connecting frame 71 continues to move forward, overcoming the resistance of the two groups of damping bearings, and lifting the boring tool 74 to fit against the inner wall of the hole of the Roots pump assembly;

[0061] S4. When the boring tool 74 is in contact with the inner wall of the Roots pump assembly, the tool holder 73 cannot rise, and the locking chamber 768 continues to move forward to squeeze the limiting rod 767 to slide into the accommodating chamber 769. The front end of the limiting rod 767 contacts the spiral groove 7613 in the toggle ring 7612 through the through groove 7611, so that the locking chamber 768 moves forward, and the limiting rod 767 can continue to slide in the spiral groove 7613, pushing the toggle ring 7612 to rotate slightly, and the locking rod 7615 in the inner wall of the toggle ring 7612 slides to the plug-in interface 710 on the drill pipe 5. In the process, the front end of the locking rod 7615 pushes the push rod 7114 forward, and the push rod 7114 drives the push gear 7113 to rotate on the lower gear. The rotation of the push gear 7113 pushes the upper gear forward in the opposite direction. The upper gear moves forward and drives the trigger plate 78 to rotate inward. The end of the trigger plate 78 is separated from the movable rod 79. The movable rod 79 is retracted into the drill rod 5 through the return spring. At this time, the drill rod 5 is unlocked. Since the locking chamber 768 is locked with the drill rod 5 through the internal toggle ring 7612, the drill rod 5 can be driven to move forward to perform the drilling and boring operation.

[0062] S5. At the same time, the locking chamber 768 and the adjustment sleeve 763 are plugged and arranged, and the spring telescopic rod 7616 in the accommodating cavity 769 will be first contracted and then released, squeezing the elastic sheet 765, and the convex point 766 on the elastic sheet 765 is separated from the regulating chamber 761. At this time, the regulating chamber 761 and the adjustment sleeve 763 can be contracted with each other, squeezing the internal spring, so that after the locking chamber 768 is locked, when drilling is continued, as the boring tool 74 gradually expands the hole diameter, the spring is released little by little, pushing the boring tool 74 to rotate, and the diameter gradually increases until the elastic force is released, so that the boring is completed;

[0063] Finally, the processing is completed, and the locking bin 768 is driven backward by the movable frame 4 to reset the drill rod 5. Then, by pulling the adjustment sleeve 763, the adjustment sleeve 763 is moved out of the locking bin 768, causing the toggle ring 7612 to rotate in the opposite direction, and the locking rod 7615 compresses the spring to release the lock on the drill rod 5. At the same time, due to the loss of the squeezing of the locking rod 7615, the trigger plate 78 is reset, and the movable rod 79 is pushed forward again to plug the locking rod 7615 into the locking groove 712 for reset.

[0064] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hole-opening device for machining a Roots pump, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a push bin (2), the top of the base (1) is fixedly connected to a cylinder, the cylinder is connected to a pneumatic rod, the top of the pneumatic rod is fixedly connected to a moving seat (3), the top of the moving seat (3) is fixedly connected to a moving frame (4), a drill rod (5) slides in the inner wall of the moving frame (4), the front end of the drill rod (5) is connected to a drill bit (6) via bolts, and a boring mechanism (7) is provided on the drill rod (5); The rear end of the drill rod (5) is splined with a power rod, and the rear end of the power rod is fixedly connected to a motor, and the outer wall of the power rod is rotatably connected to the inner wall of the push bin (2), and the outer wall of the drill rod (5) is splined with a shaft sleeve, and the shaft sleeve is rotatably connected to the inner wall of the push bin (2); The boring mechanism (7) comprises a connecting frame (71), the connecting frame (71) is sleeved on the outer wall of the drill rod (5), and a left hinge rod (72) is hingedly connected to the top end of the connecting frame (71), and a tool holder (73) is hingedly connected to the front end of the left hinge rod (72), and a boring tool (74) is installed on the top end of the tool holder (73) through a screw rod, a right hinge rod (75) is hingedly connected to the right end side wall of the tool holder (73), and the end of the right hinge rod (75) is hingedly connected to the top end of the drill rod (5), and a control member (76) is connected to the rear wall of the connecting frame (71); The shaft ends of the left hinge rod (72) and the right hinge rod (75) are both provided with damping bearings; The control member (76) comprises a control chamber (761), the control chamber (761) is arranged on the drill rod (5) via a spline sleeve, and the front end of the control chamber (761) is fixedly connected to the rear end of the connecting frame (71), a plurality of equally spaced horizontally distributed limiting grooves (762) are provided at the top of the control chamber (761), and the tops of the plurality of limiting grooves (762) are all connected to an observation port, an adjustment sleeve (763) is inserted into the inside of the control chamber (761), and an inner groove (764) is provided at the top of the adjustment sleeve (763), an elastic sheet (765) is fixedly connected to the inner wall of the inner groove (764), and a convex point (766) is fixed to the top of the elastic sheet (765), and a limiting rod (767) is connected to the inner wall of the adjustment sleeve (763) via a telescopic spring; The control member (76) further comprises a locking chamber (768), wherein the locking chamber (768) is arranged on the outer wall of the drill rod (5) via a spline sleeve, and a receiving chamber (769) is provided at the front end of the locking chamber (768), and the receiving chamber (769) is plugged into the adjusting sleeve (763), and a rotating chamber (7610) is provided in the inner wall of the locking chamber (768), and a through groove (7611) is provided on the inner wall of the rotating chamber (7610), and the through groove (7611) and the receiving chamber (769) are connected to each other. The through groove (7611) extends to the inner wall of the accommodating cavity (769), a toggle ring (7612) is rotatably connected in the inner wall of the rotating cavity (7610), a spiral groove (7613) is provided on the inner wall of the toggle ring (7612), a vertical groove (7614) is connected to the side wall of the spiral groove (7613), and the vertical groove (7614) is connected to the through groove (7611), and a locking rod (7615) is connected to the inner wall of the toggle ring (7612) via a strong spring; The inner diameter of the through groove (7611) matches the outer diameter of the limiting rod (767); A spring telescopic rod (7616) is fixedly connected to the top wall of the accommodating cavity (769); The boring mechanism (7) further comprises an inner cavity (77), the inner cavity (77) being opened inside the drill rod (5), and a trigger plate (78) being rotatably connected to the inner wall of the inner cavity (77), and a torsion spring being installed at the axial end of the trigger plate (78), the trigger plate (78) being arranged in an L-shaped structure, and a movable rod (79) being closely connected to the front section of the trigger plate (78), a return spring being sleeved on the outer wall of the movable rod (79), and a front end of the movable rod (79) being plugged into the push bin (2); A plurality of plugging ports (710) are provided on the outer wall of the drill rod (5), and a pushing member (711) is provided at the front end of each of the plurality of plugging ports (710); The pushing member (711) comprises a support frame (7111), and the outer wall of the support frame (7111) is fixedly connected to the inner wall of the inner cavity (77), the bottom end of the support frame (7111) is fixedly connected to a lower tooth plate (7112), and the top end of the lower gear plate is meshed with a pushing gear (7113), both side shaft ends of the pushing gear (7113) are rotatably connected to push rods (7114), and the outer wall of the push rod (7114) is slidably connected to the outer wall of the support frame (7111), and the top end of the pushing gear (7113) is meshed with an upper tooth plate (7115), and the outer wall of the upper tooth plate (7115) is slidably connected to the support frame (7111); A locking groove (712) is inserted into the front end of the movable rod (79), and the locking groove (712) is formed on the inner wall of the shaft sleeve on the outer wall of the drill rod (5).

2. The hole-opening device for Roots pump processing according to claim 1, characterized in that: A plurality of tool racks (73) are symmetrically arranged about the axis of the drill rod (5), and the plurality of tool racks (73) are initially in a retracted state, and the plurality of tool racks (73) are initially in the same horizontal position as the drill bit (6).

3. The hole-opening device for Roots pump processing according to claim 1, characterized in that: The inner diameters of the plurality of limit grooves (762) all match the outer diameter of the protrusion (766), and a rubber pad is sleeved on the outer wall of the protrusion (766).

4. A method for using a hole-opening device for processing a Roots pump, using the hole-opening device for processing a Roots pump as claimed in any one of claims 1 to 3, characterized in that: The steps include: S1. First, the staff fixes the Roots pump assembly on one side of the base (1) so that the Roots pump assembly and the drill rod (5) are on the same horizontal line. Then, the device is started. The cylinder pushes the movable seat (3) through the pneumatic rod. The movable seat (3) drives the movable frame (4) to move forward, so that the movable frame (4) slides forward on the drill rod (5). The locking chamber (768) at the front end of the movable frame (4) moves forward synchronously. The accommodating cavity (769) in the inner wall of the front end of the locking chamber (768) fits with the front end of the adjustment sleeve (763). At this time, the side wall of the locking chamber (768) contacts the limiting rod (767) on the side wall of the adjustment sleeve (763). Since the limiting rod (767) is connected to the side wall of the adjustment sleeve (763) through a strong spring, when the initial contact is made, the locking chamber (768) pushes the adjustment sleeve (763) forward through the two limiting rods (767); S2. Before the device is used, the elastic sheet (765) can be pressed downward to deflect and move the elastic sheet (765) downward so that the protrusion (766) is received in the adjustment sleeve (763). At this time, the adjustment sleeve (763) is pushed forward to receive the adjustment sleeve (763) in the control chamber (761). The staff controls the depth of the adjustment sleeve (763) inserted into the control chamber (761) according to the requirements so that the depth is the same as the required boring width. The elastic sheet (765) is released so that the protrusion (766) is inserted into the corresponding limit groove (762) to be locked. S3. When the adjustment sleeve (763) moves forward, the adjustment sleeve (763) will first synchronously push the control chamber (761) forward, and the front end of the control chamber (761) pushes the connecting frame (71) to slide on the drill rod (5). Since the connecting frame (71) is arranged by two sets of arc-shaped cross-arranged left hinge rods (72) and right hinge rods (75), the forward push of the connecting frame (71) will synchronously push the tool holder (73) upward. At the same time, since the locking groove (712) is a horizontal groove, when the connecting frame (71) moves forward, the left hinge rod (72) and the right hinge rod (75) are locked. ) are provided with damping bearings at the shaft ends, so that the drill rod (5) slides a certain distance in the locking groove (712) through the movable rod (79), so that the drill bit (6) at the front end of the drill rod (5) is close to the surface of the Roots pump component to open a hole, and at the same time, the boring mechanism (7) is partially moved into the opened hole. After the initial hole opening is completed, the drill rod (5) is temporarily unable to move due to the restriction of the locking groove (712). At this time, the connecting frame (71) continues to move forward to overcome the resistance of the two sets of damping bearings, and the boring tool (74) is lifted to fit the inner wall of the hole of the Roots pump component; S4. When the boring tool (74) is in contact with the inner wall of the Roots pump assembly, the tool holder (73) cannot rise, the locking chamber (768) continues to move forward to squeeze the limiting rod (767) to slide into the accommodating chamber (769), and the front end of the limiting rod (767) contacts the spiral groove (7613) in the toggle ring (7612) through the through groove (7611), so that the locking chamber (768) moves forward, the limiting rod (767) can continue to slide in the spiral groove (7613), and the toggle ring (7612) is pushed to rotate slightly, and the locking rod (7615) in the inner wall of the toggle ring (7612) slides to the plug interface (71) on the drill rod (5). 0), the front end of the locking rod (7615) pushes the push rod (7114) forward, and the push rod (7114) drives the push gear (7113) to rotate on the lower gear. The rotation of the push gear (7113) pushes the upper gear forward in the opposite direction. The upper gear moves forward and drives the trigger plate (78) to rotate inward. The end of the trigger plate (78) is separated from the movable rod (79). The movable rod (79) is retracted into the inside of the drill rod (5) by the return spring. At this time, the drill rod (5) is unlocked. Since the locking chamber (768) is locked with the drill rod (5) by the internal toggle ring (7612), the drill rod (5) can be driven to move forward to perform the drilling and boring operation. S5, when the locking chamber (768) and the adjusting sleeve (763) are plugged together, the spring telescopic rod (7616) in the accommodating chamber (769) will first contract and then release, squeezing the elastic sheet (765), so that the convex point (766) on the elastic sheet (765) is separated from the regulating chamber (761), and the regulating chamber (761) and the adjusting sleeve (763) can contract with each other, squeezing the internal spring, so that after the locking chamber (768) is locked, when drilling is continued, as the boring tool (74) gradually expands the hole diameter, the spring is released little by little, pushing the boring tool (74) to rotate, and the diameter gradually increases until the elastic force is released, so that the boring is completed; Finally, the processing is completed, and the locking chamber (768) is driven to move backward by the movable frame (4), so that the drill rod (5) is reset. Then, by pulling the adjustment sleeve (763), the adjustment sleeve (763) is moved out of the locking chamber (768), causing the toggle ring (7612) to rotate in the opposite direction, and the locking rod (7615) compresses the spring to release the lock on the drill rod (5). At the same time, due to the loss of the squeezing of the locking rod (7615), the trigger plate (78) is reset, and the movable rod (79) is pushed forward again, and the locking rod (7615) is plugged into the locking groove (712) to reset.

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