Hole opening device for roots pump machining and using method of hole opening device

Abstract

The invention relates to the field of roots pump machining, in particular to a trepanning device for roots pump machining and a using method thereof.The trepanning device comprises a base, a pushing bin is fixedly connected to the top end of the base, an air cylinder is fixedly connected to the top end of the base, a pneumatic rod is connected to the air cylinder, and a moving seat is fixedly connected to the top end of the pneumatic rod; a moving frame is fixedly connected to the top end of the moving seat, a drill rod slides in the inner wall of the moving frame, a drill bit is connected to the front end of the drill rod through a bolt, and a boring mechanism is arranged on the drill rod. According to the trepanning device for machining the roots pump, through the arrangement of a plurality of tool frames, boring operation can be synchronously carried out during drilling, the operation process is reduced, the machining efficiency of workpieces is improved, through the arrangement of a regulation and control bin and an adjusting sleeve, workers can carry out additional setting, the diameter of a bore hole is set according to the requirement, and the machining efficiency of the roots pump is improved. And the device can be suitable for different machining specifications, and workers can operate conveniently.

Description

Technical Field

[0001] The invention relates to the field of Roots pump processing, in particular to a hole opening device for Roots pump processing and a use method thereof. Background Art

[0002] Roots pump is a variable displacement vacuum pump with two blade-shaped rotors rotating synchronously in opposite directions. There is a small gap between the rotors and between the rotors and the inner wall of the pump casing, but they do not touch each other. It is widely used in industries such as petroleum, chemical industry, metallurgy, and textiles. Vacuum pump accessories are used as vacuum pump silencers to control the noise of vacuum pumps. When processing Roots pumps, holes need to be opened in the corresponding parts to facilitate the installation of components.

[0003] It was found that the following problems have not been well solved: when processing the Roots pump, after the hole is opened, the hole needs to be finely bored through boring processing to ensure the stability of the subsequent equipment operation. However, the boring processing requires frequent replacement of equipment, which is not convenient to perform boring operations simultaneously when opening the hole to reduce the operation process and increase processing efficiency, and it is inconvenient to use the equipment. Summary of the invention

[0004] The object of the present invention is to provide a hole-making device for machining a Roots pump and a method of using the same, so as to solve the problem of low machining efficiency raised in the above-mentioned background technology. To achieve the above-mentioned object, the present invention provides the following technical scheme: a hole-making device for machining a Roots pump, comprising a base, the top of the base is fixedly connected to a push bin, the top of the base is fixedly connected to a cylinder, and the cylinder is connected to a pneumatic rod, the top of the pneumatic rod is fixedly connected to a moving seat, and the top of the moving seat is fixedly connected to a moving frame, and a drill rod slides in the inner wall of the moving frame, the front end of the drill rod is connected to a drill bit by bolts, and a boring mechanism is provided on the drill rod; 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 push bin, and a shaft sleeve is splined on the outer wall of the drill rod, and the shaft sleeve is rotatably connected to the inner wall of the push bin; The boring mechanism comprises a connecting frame, the connecting frame is sleeved on the outer wall of the drill rod, and the top end of the connecting frame is hinged with a left hinge rod, and the front end of the left hinge rod is hinged with a tool holder, and the top end of the tool holder is equipped with a boring tool through a screw rod, the right end side wall of the tool holder is hinged with a right hinge rod, and the end of the right hinge rod is hinged with the top end of the drill rod, and the rear wall of the connecting frame is connected with a control member; The shaft ends of the left hinge rod and the right hinge rod are both provided with damping bearings.

[0005] 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.

[0006] 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.

[0007] 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.

[0008] 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; The inner diameter of the through groove matches the outer diameter of the limiting rod; A spring telescopic rod is fixedly connected to the top wall of the accommodating cavity.

[0009] 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; 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.

[0010] 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; The front end of the movable rod is plugged with a locking groove, and the locking groove is arranged on the inner wall of the shaft sleeve of the outer wall of the drill rod.

[0011] A method for using a hole-opening device for processing a Roots pump comprises the following steps: S1. First, the staff fixes the Roots pump assembly on one side of the base so that the Roots pump assembly is in the same horizontal line as the drill pipe, and then starts the device. The cylinder pushes the moving seat through the pneumatic rod, and the moving seat drives the moving frame forward, so that the moving frame slides forward on the drill pipe, and the locking bin at the front end of the moving frame moves forward synchronously. The accommodating cavity in the inner wall of the front end of the locking bin fits with the front end of the adjustment sleeve. At this time, the side wall of the locking bin contacts the limiting rod on the side wall of the adjustment sleeve. Since the limiting rod is connected to the side wall of the adjustment sleeve through a strong spring, when the initial contact occurs, the locking bin pushes the adjustment sleeve forward through the two limiting rods; S2. Before the equipment is used, the elastic sheet can be pressed down, and the elastic sheet deflects and moves downward, so that the convex point is received in the adjustment sleeve. At this time, the adjustment sleeve is pushed forward and received in the control chamber. The staff controls the depth of the adjustment sleeve inserted into the control chamber according to the needs, so that it can be the same as the required boring width, and loosens the elastic sheet so that the convex point is inserted into the corresponding limit groove for locking; S3. When the adjustment sleeve moves forward, the adjustment sleeve will first synchronously push the control chamber forward, and the front end of the control chamber will push the connecting frame to slide on the drill rod. Since the connecting frame is arranged by two sets of left hinge rods and right hinge rods arranged in an arc shape, the forward push of the connecting frame will synchronously push the tool holder upward. At the same time, since the locking groove is arranged as a transverse groove, when the connecting frame moves forward, since the shaft ends of the left hinge rod and the right hinge rod are both arranged with damping bearings, the drill rod will slide a distance in the locking groove through the movable rod, so that the drill bit at the front end of the drill rod is close to the surface of the Roots pump assembly to open a hole, and at the same time, the boring mechanism is partially moved into the opened hole. After the initial hole opening is completed, the drill rod is temporarily unable to move due to the restriction of the locking groove. At this time, the connecting frame continues to move forward to overcome the resistance of the two sets of damping bearings, and lift the boring tool to fit the inner wall of the hole of the Roots pump assembly. 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. 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; 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.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 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.

[0013] 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.

[0014] 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

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the general assembly of the present invention; Figure 2 It is a schematic diagram of the general assembly cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the boring mechanism in the present invention; Figure 4 The control chamber and the adjustment sleeve connection structure of the present invention are shown in FIG. Figure 1 ; Figure 5 It is a schematic diagram of the structure of the tool holder in the present invention; Figure 6 The control chamber and the adjustment sleeve connection structure of the present invention are shown in FIG. Figure 2 ; Figure 7 This is a schematic diagram of the locking chamber structure in the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the locking chamber in the present invention; Fig. 9The cross-sectional structure of the drill pipe in the present invention is shown in FIG. Figure 1 ; Fig.10 The cross-sectional structure diagram of the drill pipe in the present invention is shown in FIG. Figure 2 ; Fig.11 For the present invention Fig.10 The enlarged structural diagram at A in the middle; Fig.12 It is a schematic diagram of the locking groove and movable rod structure in the present invention.

[0016] 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

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figures 1 to 12 The present invention provides a technical solution: a hole-making device for machining a Roots pump, comprising a base 1, a push bin 2 is fixedly connected to the top of the base 1, a cylinder is fixedly connected to the top of the base 1, and a pneumatic rod is connected to the cylinder, a moving seat 3 is fixedly connected to the top of the pneumatic rod, a moving frame 4 is fixedly connected to the top of the moving seat 3, and a drill rod 5 slides in the inner wall of the moving frame 4, a drill bit 6 is connected to the front end of the drill rod 5 by bolts, and a boring mechanism 7 is arranged 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 a shaft sleeve is splined on the outer wall of the drill rod 5, and the shaft sleeve is rotatably connected to the inner wall of the push bin 2; The boring mechanism 7 includes a connecting frame 71, which is sleeved on the outer wall of the drill rod 5, and a left hinge rod 72 is hinged on the top of the connecting frame 71, and a tool holder 73 is hinged on the front end of the left hinge rod 72, and a boring tool 74 is installed on the top of the tool holder 73 through a screw rod, a right hinge rod 75 is hinged on the right end side wall of the tool holder 73, and the end of the right hinge rod 75 is hinged to the top 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.

[0019] In this embodiment, Figure 4 and Figure 5 As shown, there are several tool holders 73 symmetrically arranged about the axis of the drill rod 5, and several tool holders 73 are initially in a folded state, so that when the tool holders 73 are unfolded, the damping settings of the shaft ends of the left hinge rod 72 and the right hinge rod 75 can first push the drill rod 5 forward, so that the drilling operation is performed first, and then the boring operation is performed.

[0020] In this embodiment, Figure 4 and Figure 6 As 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.

[0021] 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 .

[0022] In this embodiment, Figure 3 , Figure 4 , Figure 7 and Figure 8As 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; The inner diameter of the through slot 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 , 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 .

[0023] In this embodiment, Figure 3 , Figure 4 , Fig. 9 , Fig.10 and Fig.12 As shown, the boring mechanism 7 also includes an inner cavity 77, the inner cavity 77 is opened inside the drill rod 5, and a trigger plate 78 is rotatably connected in the inner wall of the inner cavity 77, and a torsion spring is installed at the axial end of the trigger plate 78, the trigger plate 78 is set in an L-shaped structure, and the front section of the trigger plate 78 is closely connected to a movable rod 79, a reset spring is sleeved on the outer wall of the movable rod 79, and the front end of the movable rod 79 is plugged into the push bin 2; A plurality of plug-in 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 plug-in ports 710. Through the setting of the trigger plate 78, when the locking chamber 768 is locked, the trigger plate 78 can be synchronously driven to release the lock of the drill rod 5 and the pushing chamber 2.

[0024] In this embodiment, Fig. 9 , Fig.10 and Fig.11As 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, the bottom end of the support frame 7111 is fixedly connected with a lower tooth plate 7112, and the top end of the lower gear plate is meshed with a pushing gear 7113, and the two side shaft ends of the pushing gear 7113 are rotatably connected with 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; The front end of the movable rod 79 is plugged with a locking groove 712, and the locking groove 712 is opened on the inner wall of the sleeve on the outer wall of the drill rod 5. Through the setting of the upper tooth plate 7115, the lower tooth 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.

[0025] In this embodiment, Figures 1 to 12 As shown, a method for using a hole-opening device for processing a Roots pump comprises the following steps: S1. First, the staff fixes the Roots pump assembly on one side of the base 1 so that the Roots pump assembly is in the same horizontal line as the drill rod 5, and then starts the device. The cylinder pushes the moving seat 3 through the pneumatic rod, and the moving seat 3 drives the moving frame 4 to move forward, so that the moving frame 4 slides forward on the drill rod 5, and the locking bin 768 at the front end of the moving frame 4 moves forward synchronously, and the accommodating cavity 769 in the inner wall of the front end of the locking bin 768 fits with the front end of the adjustment sleeve 763. At this time, the side wall of the locking bin 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 initially contacted, the locking bin 768 pushes the adjustment sleeve 763 forward through the two limiting rods 767; S2. Before the equipment is used, the elastic sheet 765 can be pressed down to deflect and move downward, so that the convex point 766 is received in the adjustment sleeve 763. At this time, the adjustment sleeve 763 is pushed forward and received 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 it can be the same as the required boring width, and loosens the elastic sheet 765 so that the convex point 766 is inserted into the corresponding limit groove 762 for locking; When the adjusting sleeve 763 moves forward, the adjusting sleeve 763 will first synchronously push the regulating chamber 761 forward, and the front end of the regulating chamber 761 will push the connecting frame 71 to slide on the drill rod 5. Since the connecting frame 71 is provided with 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 shaft ends of the left hinge rod 72 and the right hinge rod 75 are both The damping bearing is used so that the drill rod 5 can slide a 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 assembly 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 restricted by the locking groove 712 and cannot move. 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 assembly. 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. 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; 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.

[0026] 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.

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 2, characterized in that: The control member (76) comprises a control chamber (761), the control chamber (761) being arranged on the drill rod (5) via a spline sleeve, and the front end of the control chamber (761) being fixedly connected to the rear end of the connecting frame (71), the top end of the control chamber (761) being provided with a plurality of equally spaced horizontally distributed limiting grooves (762), and the top ends 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 the top end of the adjustment sleeve (763) is provided with an inner groove (764), 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 end 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.

4. A hole-opening device for Roots pump processing according to claim 3, 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).

5. The hole-opening device for Roots pump processing according to claim 3, characterized in that: 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).

6. The hole-opening device for machining a Roots pump according to claim 5, characterized in that: 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).

7. A hole-opening device for Roots pump processing according to claim 6, characterized in that: 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).

8. 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 7, 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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