Impactor tooth removal machine

Abstract

A tooth extraction machine with an impactor comprises a gantry, a supporting device slidably mounted on the gantry and a quick-adapter mounted on the supporting device, wherein the supporting device is driven to move along a column by a linear lifting mechanism, the bottom of the quick-adapter is connected to the impactor through a transition joint, the top of the quick-adapter is connected to an air compressor, the air compressor provides impact power to the impactor, a supporting plate is fixed at the bottom of the gantry and between two columns of the gantry, a tooth extraction supporting plate is provided on the supporting plate, a plurality of vertically arranged supporting columns are provided on the tooth extraction supporting plate, the support columns correspond to positions on a drill bit where no carbide teeth are installed, an induction heating coil is also provided on the support plate, the heating zone of the induction heating coil corresponds to the position of the drill bit, the present invention ensures the integrity of the extraction of carbide teeth, thereby making full use of discarded drill bits and improving the value of carbide recycling.

Description

Technical Field

[0001] The invention relates to an impactor tooth removing machine. Background Art

[0002] Since the recycling value of waste cemented carbide is much higher than the price of steel, for discarded down-the-hole drill bits, the cemented carbide teeth are usually separated from the drill bit steel body and then recycled to improve the recycling economy of the drill bit. However, it is very difficult to remove the cemented carbide that is pressed into the drill bit steel body from the drill bit. The current general practice is to use flame cutting to cut off the steel part of the down-the-hole drill bit that wraps the cemented carbide to separate and extract the cemented carbide teeth from the drill bit steel body. However, steel will stick to the cemented carbide teeth after flame cutting, and the outer surface of the cemented carbide teeth will often be cut; and the recycling market price of cemented carbide teeth that stick to steel is much lower than the price of cemented carbide that is not stuck to any impurities. Therefore, there is an urgent need for a device that can easily separate the drill bit from the cemented carbide teeth. Summary of the invention

[0003] The invention solves the shortcomings of the prior art and provides an impactor tooth removal machine which can conveniently separate a drill bit steel body from a cemented carbide tooth and has a clean surface of the cemented carbide tooth after removal.

[0004] To achieve the above-mentioned purpose, the present invention first proposes an impactor tooth removal machine, comprising a gantry, a supporting device slidably mounted on the gantry and a quick-adapter mounted on the supporting device, the supporting device being driven to move along a column by a linear lifting mechanism, the bottom of the quick-adapter being connected to the impactor through a transition joint, the top of the quick-adapter being connected to an air compressor, the air compressor providing impact power to the impactor, a support plate being fixed at the bottom of the gantry and between two columns of the gantry, a tooth removal support plate being provided on the support plate, a plurality of vertically arranged support columns being provided on the tooth removal support plate, the support columns corresponding to positions on the drill bit where no carbide teeth are installed, an induction heating ring being further provided on the support plate, the heating zone of the induction heating ring corresponding to the position where the drill bit is located, when in working state, the drill bit of the impactor is arranged in the heating zone of the induction heating ring, and the position on the drill bit where no carbide teeth are installed is supported on the support columns.

[0005] In this embodiment, the door frame is composed of two vertically installed columns and a connecting column installed between the two columns and arranged horizontally.

[0006] In this embodiment, the length of the support column is greater than the length of the cemented carbide teeth on the drill bit.

[0007] In this embodiment, a slide groove is vertically provided on the upper edge of the opposite sides of the two columns, and the supporting device includes two clamping plates and a connecting plate. The two ends of the two clamping plates are respectively installed in the slide grooves of the columns through sliders, and the two clamping plates are connected by a horizontally arranged connecting plate, and the quick adapter is installed on the connecting plate.

[0008] In this embodiment, the linear lifting mechanism includes a lifting hydraulic rod and a hydraulic station that provides hydraulic power to the lifting hydraulic rod. The lifting hydraulic rod is arranged vertically, one end of the connecting plate extends out of the clamping plate and is connected to the movable end of the lifting hydraulic rod, and the fixed end of the lifting hydraulic rod is fixed on the ground.

[0009] In this embodiment, limiting grooves are vertically arranged on the upper edges of opposite sides of the two columns, and the diameters of the limiting grooves of the two columns are installed with stabilizing devices for radially limiting the impactor. The stabilizing device includes a righting rod and a righting handle. One end of the righting rod is fixed in the limiting groove of the column, and the other end faces the outer cylinder of the impactor. A slot is arranged in the end of the righting rod facing the impactor, and one end of the righting handle is inserted into the slot of the righting rod and fixed by a positioning bolt. The other end of the righting handle is provided with a V-shaped claw, and the impactor is radially positioned by the V-shaped claws on the righting handles on both sides.

[0010] Due to the adoption of the above structure, the present invention utilizes an induction heating ring to heat the drill bit, so that the interference clamping force of the steel on the cemented carbide teeth disappears, and then the impactor is started, the impactor obtains energy, and impacts the support column. When the part of the drill bit without the cemented carbide teeth installed falls on the support column of the support plate, the drill bit immediately stops moving due to the support of the support column. However, since the cemented carbide teeth on the drill bit are in a suspended position, the cemented carbide teeth will continue to fall downward under the energy and inertia of the impactor, so that the cemented carbide teeth originally interference-fitted on the drill body will vibrate under the energy of the impactor, so that the cemented carbide teeth are separated from the drill body. In this way, the integrity of the cemented carbide tooth extraction is guaranteed, so that the discarded drill bit can be fully utilized, and the value of cemented carbide recycling is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention;

[0012] Figure 2 It is an enlarged view of A of the present invention;

[0013] Figure 3 It is a schematic diagram of the structure of the present invention without the induction heating coil at A;

[0014] Figure 4 It is an enlarged view of B of the present invention.

[0015] In the attached drawings, 1. connecting column; 2. column; 3. clamping plate; 4. connecting plate; 5. lifting hydraulic rod; 6. hydraulic station; 7. quick adapter; 8. slider; 9. transition joint; 10. righting handle; 101. positioning bolt; 102. V-shaped claw; 11. righting rod; 12. impactor; 121. carbide tooth; 13. drill bit; 14. tooth removal support plate; 141. support column; 15. induction heating coil; 16. support plate; 17. induction heating power supply; 18. air compressor. DETAILED DESCRIPTION

[0016] 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0018] like Figures 1 to 4As shown, the present invention provides an impactor tooth-removing machine, comprising a gantry, a supporting device slidably mounted on the gantry, and a quick adapter 7 mounted on the supporting device, wherein the gantry is composed of two vertically mounted columns 2 and a horizontally arranged connecting column 1 mounted between the two columns 2, a supporting plate 16 is fixed between the bottoms of the two columns 2 and directly below the quick adapter 7, a tooth-removing supporting plate 14 is provided on the supporting plate 16, a plurality of vertically arranged supporting columns 141 are provided on the tooth-removing supporting plate 14, the supporting columns 141 correspond to positions on the drill bit 13 where no carbide teeth 121 are installed, and the length of the supporting columns 141 is greater than the length of the carbide teeth 121 on the drill bit 13, an induction heating coil 15 is further provided on the supporting plate 16, a heating zone of the induction heating coil 15 corresponds to the position of the drill bit 13, and the induction heating coil 15 is connected to an induction heating power source 17 Connection, a limiting groove is vertically arranged on the upper edge of the opposite side of the two columns 2, and a sliding groove is vertically arranged on the upper edge of the opposite side of the two columns 2. The supporting device includes two clamping plates 3 and a connecting plate 4. The two ends of the two clamping plates 3 are respectively installed in the sliding grooves of the columns 2 through sliders 8, and the two clamping plates 3 are connected by a horizontally arranged connecting plate 4. The supporting device is driven to move along the columns 2 by a linear lifting mechanism. The quick adapter 7 is installed on the connecting plate 4. The bottom of the quick adapter 7 is connected to the impactor 12 through a transition joint 9. The top of the quick adapter 7 is connected to an air compressor 18. The air compressor 18 provides impact power to the impactor 12. When in working state, the drill bit 13 of the impactor 12 is arranged in the heating zone of the induction heating coil 15, and the position of the drill bit 13 where the carbide teeth 121 are not installed is supported on the support column 141.

[0019] A stabilizing device is also provided between the impactor 12 and the door frame, and the stabilizing device includes a righting rod 11 and a righting handle 10. One end of the righting rod 11 is fixed in the limiting groove of the column 2, and the other end faces the outer cylinder of the impactor 12. A slot is provided in the end of the righting rod 11 facing the impactor 12. One end of the righting handle 10 is inserted into the slot of the righting rod 11 and fixed by a positioning bolt 101. The other end of the righting handle 10 is a V-shaped claw 102. The impactor 12 is radially positioned by the V-shaped claws 102 on the righting handles 10 on both sides to prevent the impactor 12 from moving radially during operation.

[0020] The linear lifting mechanism includes a lifting hydraulic rod 5 and a hydraulic station 6 that provides hydraulic power to the lifting hydraulic rod 5. The lifting hydraulic rod 5 is arranged vertically, one end of the connecting plate 4 extends out of the clamping plate 3 and is connected to the movable end of the lifting hydraulic rod 5, and the fixed end of the lifting hydraulic rod 5 is fixed on the ground.

[0021] When in use, the quick adapter 7 is connected to the air compressor 18, and the impactor 12 is connected to the quick adapter 7 through the transition joint 9. The compressed air is connected to the impactor 12 through the quick adapter 7 and the transition joint 9 with the power provided by the air compressor 18, thereby providing impact power for the impactor 12. The impactor 12 acts on the drill bit 13, and the drill bit 13 acts on the support plate 16. The straightening handle 10 fixes the outer cylinder of the impactor through the front V-shaped claw 102. The depth of the straightening handle 10 inserted into the straightening rod 11 can be adjusted. After adjustment, the positioning bolts are used to fix the positions of the two, so as to adapt to the diameter of the outer cylinder of different impactors by adjusting the position of the straightening handle 10, so as to ensure that the impactor does not have an excessively large deflection radius when working, thereby reducing the impact on the efficiency of tooth extraction.

[0022] On the one hand, the supporting device can support and connect the impactor, and on the other hand, the position of the supporting device can be adjusted in the vertical direction through the linear lifting mechanism, thereby facilitating the installation and disassembly of the impactor.

[0023] The carbide teeth on the down-the-hole drill are fastened by interference fit with the hole axis. The linear expansion coefficient of carbide is generally 7×10 -6 mm / ℃, the linear expansion coefficient of steel is 12×10 -6 mm / ℃, since the linear expansion coefficient of the cemented carbide tooth 121 is lower than that of the steel, when in use, by heating the drill bit, when the drill bit is heated to a certain temperature, the interference clamping force of the steel on the cemented carbide tooth 121 disappears. In this embodiment, considering the economy of heating, the temperature at which the interference between the cemented carbide and the drill bit steel body just disappears is the best. Generally, the heating temperature is selected between 700℃ and 800℃ according to the size of the outer circle of the drill bit body.

[0024] During operation, the drill bit 13 is placed in the induction heating coil 15. The drill bit is first heated to the required temperature by the induction heating coil 15, and then the impactor is started. The impactor obtains energy and impacts the support column 141. When the part of the drill bit without the carbide teeth 121 installed falls on the support column 141 of the support plate 14, the drill bit 13 stops immediately. However, since the carbide teeth 121 on the drill bit are in a suspended position, the carbide teeth 121 continue to move under the energy and inertia of the impactor, so that the carbide teeth 121 originally interference-fitted on the drill body are separated from the drill bit 13 under the action of vibration and inertia.

[0025] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An impactor tooth removal machine, characterized in that: The invention comprises a gantry, a support device slidably mounted on the gantry, and a quick-change joint (7) mounted on the support device, wherein the support device is driven by a linear lifting mechanism to move vertically along a column (2), the bottom of the quick-change joint (7) is connected to an impactor (12) via a transition joint (9), the top of the quick-change joint (7) is connected to an air compressor (18), a support plate is fixed at the bottom of the gantry and between two columns (2) of the gantry, a tooth-taking support plate (14) is provided on the support plate, and a plurality of vertically arranged support columns (141) are provided on the tooth-taking support plate (14), The support column (141) corresponds to a position on the drill bit (13) where no carbide teeth (121) are installed, the height of the support column (141) is greater than the length of the carbide teeth (121) on the drill bit (13), an induction heating ring (15) is also provided on the support plate, the heating zone of the induction heating ring (15) corresponds to the position of the drill bit (13), when in working state, the drill bit (13) of the impactor (12) is arranged in the heating zone of the induction heating ring (15), and the position on the drill bit (13) where no carbide teeth (121) are installed is supported on the support column (141); Limiting grooves are vertically arranged on opposite sides of the two columns (2), and a stabilizing device for radially limiting the impactor (12) is installed between the limiting grooves of the two columns (2). The stabilizing device comprises a straightening rod (11) and a straightening handle (10). One end of the straightening rod (11) is fixed in the limiting groove of the column (2), and the other end faces the outer cylinder of the impactor (12). A slot is arranged in the end of the straightening rod (11) facing the impactor (12). One end of the straightening handle (10) is inserted into the slot of the straightening rod (11) and fixed by a positioning bolt (101). The other end of the straightening handle (10) is provided with a V-shaped claw (102), and the impactor (12) is radially positioned by the V-shaped claws (102) on the straightening handles (10) on both sides.

2. The impactor tooth removal machine according to claim 1, characterized in that: The door frame is composed of two vertically installed columns (2) and a connecting column (1) installed between the two columns (2) and arranged horizontally.

3. The impactor tooth removal machine according to claim 1, characterized in that: A slide groove is vertically arranged on the upper side of the two columns (2) facing each other. The support device comprises two clamping plates (3) and a connecting plate (4). The two ends of the two clamping plates (3) are respectively installed in the slide groove of the column (2) through sliders (8). The two clamping plates (3) are connected by a horizontally arranged connecting plate (4). The quick-connect joint (7) is installed on the connecting plate (4).

4. The impactor tooth removal machine according to claim 3, characterized in that: The linear lifting mechanism comprises a lifting hydraulic rod (5) and a hydraulic station (6) for providing hydraulic power to the lifting hydraulic rod (5); the lifting hydraulic rod (5) is arranged vertically, one end of the connecting plate (4) extends out of the clamping plate (3) and is connected to the movable end of the lifting hydraulic rod (5); and the fixed end of the lifting hydraulic rod (5) is fixed on the ground.

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