AU2013302126A1

AU2013302126A1 - Method for heightening and/or widening and righting impact head by using back-to-back groove and device for implementing method for heightening and/or widening and righting impact head by using back-to-back groove

Info

Publication number: AU2013302126A1
Application number: AU2013302126A
Authority: AU
Inventors: Suhua LIU
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-06
Filing date: 2013-10-08
Publication date: 2015-03-26
Anticipated expiration: 2033-10-08
Also published as: AU2013302125A2; AU2013302126B2; EA201590337A1; WO2014023085A1; AU2013302125A1; WO2014023086A2; UA118958C2; AP2015008300A0; AP2015008301A0; WO2014023086A3; AU2013302126A2; AU2013302125B2; EA035742B9; EA035742B1; EA201590336A1

Abstract

Disclosed are an impact head-centralizing method by means of heightening and/or widening back recess and a device for centralizing impact head by means of heightening and/or widening back recess that implements said method in the fields of mining or engineering machinery. The device comprises a dual back recess guidance mechanism (37), an impact support mechanism (12), a drive mechanism (9), impact heads (3), etc. The dual back recess guidance mechanism (37) comprises a dual rolling friction back recess structure (10) and an impact guidance element (7), etc. The dual rolling friction back recess structure (10) comprises an upper rolling friction grove (1), and a lower rolling friction groove (11). A power impact element (8) drives the impact guidance element (7), etc. to reciprocate. The impact guidance element (7) is disposed within the space of external guidance rollers (28, 29). The impact guidance element (7) increases the centralizing height of the impact head (3), and the rolling friction back recess structure (10) supports the reciprocating movement direction of the impact guidance element (7).

Description

METHOD FOR HEIGHTENING AND/OR WIDENING AND RIGHTING IMPACT HEAD BY USING BACK-TO-BACK GROOVE AND DEVICE FOR IMPLEMENTING METHOD FOR HEIGHTENING AND/OR WIDENING AND RIGHTING IMPACT HEAD BY USING BACK-TO-BACK GROOVE Field of the Invention The present invention relates to the field of machinery, and is particularly adapted to a method for heightening and/or widening and righting an impact head by using a back-to-back groove and a device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove, in the field of mining or engineering machinery. Background of the Invention Coal cutters, heading machines and excavators are collectively referred to as mining machines. In order to quickly and efficiently excavate rocks or coal beds or cement coagulation matters or compacted mudstones or the like, guide rolling bodies are arranged at the upper and lower parts of an impact guide element of a reciprocating impact mining machine or a reciprocating impact excavator, since the upper and lower guide rolling bodies need to occupy a larger space, the size of the impact guide element for supporting and righting an impact head is relatively decreased, resulting in insufficient supporting and righting force for the impact head, so that when an impact power box drives impact teeth to impact a material, the breaking torques of upper and lower impact teeth are large, and it is unlikely to generate a lateral force on the impact head due to uneven stress, moreover, the upper and lower guide rolling bodies are arranged at the outer side of the impact guide element to 1 increase the height and/or width of an impact guide mechanism, when multiple layers of impact heads are arranged, the upper and lower impact heads must be processed higher and larger on a higher guide mechanism, and the higher and larger impact heads are bound to increase the impact resistance, particularly, since the impact head of the coal cutter and the like must be larger than the power box in height and the width, under the condition that the impact head impacts a height and a width larger than those of the power box and the total mining height is larger than the total height of the machine body, the power box and the machine body can pass to achieve continuous coal mining, and meanwhile, the impact head of the reciprocating impact mining machine must be increased in order to be assorted with other equipment. For example, to match with a bendable scraper conveyer for transshipment, a reciprocating impact coal cutter must have a certain mining floor based quantity and must have an enough roof cutting quantity to facilitate the smooth propulsion of a hydraulic bracket, accordingly, the impact head must be provided with a certain height, namely, the impact head must be processed larger and heavier. However, when impacting the material, the larger and heavier impact head contacts a large area of the material at one time, resulting in concentrated and strong counterforce, after the impact counterforce is transmitted to a guide mechanism, a driving mechanism and the machine body, it is prone to damaging the guide mechanism and the driving mechanism and leading to premature damage of the impact power box and the like, the impact counterforce is liable to form resonance with the machine body to deform the machine body and will cause such problems as impact area collapse and the like in serve conditions, leading to the severe loss due to continuous working failure of the equipment. In order to solve the above-mentioned problems, the present invention provides a method for heightening and/or widening and righting in impact head by using a back-to-back groove and a 2 device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove. By adopting the device, the height and/or width of a single impact head is greatly decreased, the single impact head can mine a lower material, and multiple smaller impact heads are combined to use the same power source, so as to save energy, reduce the energy consumption and improve the efficiency. Summary of the Invention The present invention is achieved by the following technical solution: a device for heightening and/or widening and righting an impact head by using a back-to-back groove includes a back-to-back groove guide mechanism, an impact supporting mechanism, a driving mechanism, an impact head and the like, wherein the impact head includes a toothholder and the like, the back-to-back groove guide mechanism includes a rolling friction back-to-back groove structure, an impact guide element and the like, the rolling friction back-to-back groove structure includes an upper rolling friction groove, a lower rolling friction groove and the like, the upper rolling friction groove and the lower rolling friction groove include guide rolling bodies and the like, the impact guide element includes an upper impact guide element and a lower impact guide element, the upper impact guide element and the lower impact guide element are respectively fixed at the two ends of the same toothholder, no guide rolling body is arranged at the outside of the upper part of the upper impact guide element, no guide rolling body is arranged at the outside of the lower part of the lower impact guide element, the upper impact guide element is buckled in the upper rolling friction groove and the lower impact guide element is buckled in the lower rolling friction groove to form the back-to-back groove guide mechanism. the impact supporting mechanism supports the rolling friction back-to-back groove structure, the driving mechanism includes a power impact element and the like, the power impact element is connected with the toothholder or the impact guide element, the power impact element drives the impact guide element and/or the toothholder and the like to reciprocate in a rolling friction manner, the rolling friction back-to back groove structure supports the impact guide element to reciprocate in a rolling friction manner, the impact guide element is placed in a space occupied by an external guide rolling body, the impact guide element increases the righted height and/or width of the impact head, and the rolling friction back-to-back groove structure and the impact guide element right the reciprocating direction of the toothholder. The present invention further includes the following methods for heightening and/or widening and righting an impact head by using a back-to-back groove. which are specifically as follows: Method 1: the upper rolling friction groove and the lower rolling friction groove are arranged., the bottom of the upper rolling friction groove and the bottom of the lower rolling friction groove are arranged in a back to back manner to form the rolling friction back-to-back groove structure, the upper impact gide element is arranged on the concave surface of the upper rolling friction groove, the lower impact guide element is arranged on the concave surface of the lower rolling friction groove, the lower impact guide element is fixed at the lower end of the toothholder, the upper impact gu ide element is fixed at the upper end of the toothholder, the upper rolling friction groove and the lower rolling friction groove are arranged in a U-shaped guide frame or a frame-shaped guide frame or a cylindrical guide frame or the like formed by the toothholder., the upper impact guide element and the lower impact guide element, the upper impact guide element and the lower impact guide element are 4 correspondingly buckled on the upper rolling friction groove and the lower rolling friction groove via the toothholder, the power impact element drives the toothholder or the upper impact guide element and the lower impact guide element to reciprocate, the upper impact guide element and the lower impact guide element reciprocate in a rolling friction manner by means of the upper rolling friction groove and the lower rolling friction groove, the upper rolling friction groove is closely buckled with the upper impact guide element to prevent the upper impact guide element from swinging left and right, the lower rolling friction groove is closely buckled with the lower impact guide element to prevent the lower impact guide element from swinging left and right, when the upper impact guide element moves upwards, the lower impact guide element tensions the upper impact guide element through the toothholder and the lower rolling friction groove to control the upper impact guide element to not move upwards, when the lower impact guide element moves down-wards, the upper impact guide element controls the lower impact guide element to not move downwards through the upper rolling friction groove, no rolling body is arranged at the upper part of the upper impact guide element and/or no rolling body is arranged at the lower part of the lower impact guide element, the impact guide element and the like is arranged in a space occupied by an upper rolling body and/or a lower rolling body, and the upper impact guide element and the lower impact guide element are respectively arranged at the two ends of the toothholder., to relatively increase the distance between the upper impact guide element and the lower impact guide element to heighten and/or widen the righting force for the toothholder and relatively decrease the height and/or width and the like of the toothholder to reduce the impact resistance caused by excessive width or excessive height of the toothholder. Method 2: The rolling body at the upper part of the upper impact guide element is removed and the rolling body at the lower part of the lower impact guide element is removed to reduce the height of the back-to-back groove guide mechanism. so as to reduce the height of the toothholder, the number of the used rolling bodies is decreased by use of the back-to-back groove guide mechanism, a larger impact head is processed smaller or a single toothholder with the same impact cutting height is changed into multiple toothholders, a single layer of impact heads with the same impact cutting height is changed into the combination of multiple layers of impact heads, the small impact heads of a combined impact head use the same power source, each small impact head generates reduced impact area, large impact force small impact resistance and the like at each time, each impact head impacts in a rolling friction reciprocating manner, and multiple smaller impact heads alternatively impact rocks or coal beds or cement coagulation matters or compacted mudstones or the like in a rolling friction reciprocating manner, in order to achieve instantaneous concentrated use of power, and the multiple impact heads alternatively impact, thereby being unlikely to generate resonance and reducing the impact resistance and the breaking force. Method 3: The upper rolling friction groove and the lower rolling friction groove are arranged in such forms as left and right back-to-back grooves and/or upper and lower back to-back grooves and the like, in order to control the left and right movements and/or up and down movements and the like of the impact guide element. Method 4: A larger impact head is processed smaller or a larger impact head is decomposed into multiple smaller impact heads, one smaller impact head or multiple smaller impact heads impact at high frequency to strengthen the impact force, and each impact head impacts in a rolling friction reciprocating manner, the multiple smaller impact heads alternatively impact rocks or coal beds or cement coagulation mailers or compacted mudstones or the like in a rolling friction reciprocating manner, in order to achieve instantaneous concentrated use of power, and the multiple impact heads alternatively impact, thereby being unlikely to generate resonance, reducing the impact resistance, the breaking force and the like and improving the efficiency. Method 5: The rolling friction back-to-back groove is configured as a rolling friction back-to back groove structure of waist drum wheels, grooves are arranged on the waist drum wheels, projections or circular arcs buckled with the waist drum wheels are correspondingly arranged on the upper impact guide element and the lower impact guide element, and an upper groove of an upper waist drum wheel and a lower groove of a lower waist drum wheel form the rolling friction back-to-back groove structure of the waist drum wheels. Method 6: The rolling friction back-to-back groove structure of the waist drum wheels is arranged in the upper impact guide element and the lower impact guide element, the waist drum wheels control the impact direction of the impact guide element through the grooves, the impact supporting mechanism supports the waist drum wheels through a bearing and the like, the impact counterforce of the impact head is applied on the upper impact guide element and the lower impact guide element, the waist drum wheels support and right the impact head, the w aist drum wheels transmit the supporting force and the impact counterforce to the bearing and the like, and the bearing bears the impact counterforce and the supporting force and the like, to greatly prolong the service life of the back-to-back groove guide mechanism. Method 7: The upper impact guide element and the lower impact guide element are arranged, one ends of the upper impact guide element and the lower impact guide element are respectively arranged at the upper end and the lower end of the same toothholder, the other ends of the upper impact guide element and the lower impact guide element are respectively connected with the upper end and the lower end of the same power impact element, the toothholder, the upper impact guide element, the power impact element and the lower impact guide element form a frame-shaped guide frame, the rolling friction back-to-back groove structure is arranged in the frame-shaped guide frame, the upper impact guide element and the lower impact guide element are closely buckled with the rolling friction back-to-back groove structure and the like to support and right the impact direction of the toothholder, and the upper impact guide element and the lower impact guide element increase the righted height and/or width of the toothholder and the like. The upper rolling friction groove includes an upper cambered rolling friction groove and the like. and the lower rolling friction groove includes a lower cambered rolling friction groove and the like. The upper cambered rolling friction groove and the lower cambered rolling friction groove are arranged in a U-shaped guide frame or a frame-shaped guide frame or a cylindrical guide frame or the like formed by the toothholderl the upper impact guide element and the lower impact guide element, the upper impact guide element and the lower impact guide element are correspondingly buckled on the upper cambered roiling friction groove and the lower cambered rolling friction groove via the toothholder, the power impact element drives the toothholder or the upper impact guide element and the lower impact guide element to reciprocate, the upper impact guide element and the lower impact guide element reciprocate in a rolling friction manner under the support of the upper cambered rolling friction groove and the lower cambered rolling friction groove, the upper cambered rolling friction groove is closely buckled with the upper impact guide element to prevent the upper impact guide element from swinging left and right, the lower cambered rolling friction groove is closely buckled with the lower impact guide element to prevent the lower impact guide element from swinging left and right, when the upper impact guide element moves upwards, the lower impact guide element tensions the upper impact guide element through the toothholder and the lower cambered rolling friction groove to control the upper impact guide element to not move upwards, and when the lower impact guide element moves downwards, the upper impact guide element controls the lower impact guide element to not move doxiwwards through the upper cambered rolling friction groove and the like. The rolling bodies at the upper part of the upper impact guide element are decreased and the rolling bodies at the lower part of the lower impact guide element are decreased to reduce the height of the back-to-back groove guide mechanism, so as to reduce the height of the toothholder, the number of the used rolling bodies is decreased by use of the back-to-back groove guide mechanism, a larger impact head is processed smaller or a single toothholder with the same impact cutting height is divided into multiple toothholders, a single layer of impact heads with the same impact cutting height is changed into the combination of multiple layers of impact heads, the small impact heads of a combined impact head use the same power source, each small impact head generates reduced impact area, large impact force, small impact resistance and the like at each time, each impact head impacts in a rolling friction reciprocating manner, and multiple smaller impact heads alternatively impact rocks or coal beds or cement coagulation matters or compacted mudstones or the like in a rolling friction reciprocating manner, in order to achieve instantaneous concentrated use of power, and the multiple impact heads 9 alternatively impact, thereby being unlikely to generate resonance and reducing the impact resistance and the breaking force. The upper cambered rolling friction groove and the lower cambered rolling friction groove are arranged in such forms as left and right back-to-back grooves and/or upper and lower back-to-back grooves and the like, in order to control the left and right movements and/or up and down movements and the like of the impact guide element. The cambered rolling friction groove includes waist drum wheels and the like, grooves are arranged on the waist drum wheel, projections or circular arcs or the like buckled with the waist drum wheels are correspondingly arranged on the upper impact guide element and the lower impact guide element, and an upper groove of an upper waist drum wheel and a lower groove of a lower waist drum wheel form the rolling friction back-to-back groove structure of the waist drum wheels. The rolling friction back-to-back groove of the waist drum wheels is arranged in the upper impact guide element and the lower impact guide element, the waist drum wheels control the impact direction of the impact guide element through the grooves, the impact supporting mechanism supports the waist drum wheels through a bearing, the impact counterforce of the impact head is applied on the upper impact guide element and the lower impact guide element, the waist drum wheels support and right the impact head, the waist drum wheels transmit the supporting force and the impact counterforce to the bearing, and the bearing bears the impact counterforce and the supporting force, to greatly improve the performance of and prolong the service life of the back-to-back groove guide mechanism. One ends of the upper impact guide element and the lower impact guide element are respectively arranged at the upper end and the lower end of the same toothholder, the other ends of the upper impact guide element and the lower impact guide 10 element are respectively connected with the upper end and the lower end of the same power impact element, the toothholder, the upper impact guide element, the power impact element and the lower impact guide element form the frame-shaped guide frame, the rolling friction back-to-back groove structure is arranged in the frame-shaped guide frame, the upper impact guide element and the lower impact guide element are closely buckled with the rolling friction back-to-back groove structure to support and right the impact direction of the toothholder, the upper impact guide element and the lower impact guide element increase the righted height and/or width and the like of the toothholder, in order to relatively reduce the height of the driving mechanism and reduce the breaking damage caused by a small righting amplitude of the impact guide element on the driving mechanism, and the upper impact guide element and the lower impact guide element are separated from or separately connected or integrated with the power impact element. The U-shaped guide frame includes a left impact guide element, a right impact guide element and the like, the guide rolling body includes a left guide rolling body, a right guide rolling body and the like, the guide rolling body is arranged at the inner sides of the left impact guide element and the right impact guide element, and the left guide rolling body and the right guide rolling body are respectively buckled with the left impact guide element and the right impact guide element. The impact head includes the toothholder, impact teeth and the like, the toothholder is arranged at one end or two ends of the impact guide element, the toothholder is separately connected or integrated with the impact teeth, and the toothholder is separately connected or integrated with the impact guide element. The rolling friction back-to-back groove structure includes two or more than two waist drum wheels, the two or more than two waist drum wheels are arranged in the upper impact guide element and the lower impact guide element and/or in the left 11 impact guide element and the right impact guide element, and the upper and lower and/or left and right waist drum wheels right the impact direction of the impact guide element. The guide rolling body includes a roller and the like, the impact guide element supports the roller, the roller includes a roller shaft and the like, the roller shaft is directly arranged in the impact guide element or is arranged in the impact guide element through a bearing or is arranged in the impact guide element through a shaft sleeve or the like, the outside diameter of the roller is larger than that of the impact guide element, and the impact guide element provided with the roller forms rolling friction with the impact supporting mechanism. The impact supporting mechanism includes a power box and the like, the head of the impact guide element is stretched out from the power box, a sealing element is arranged between the impact guide element and the power box, and the telescopic friction segment of the impact guide element is cylindrical, and the like. When a crank connecting rod is arranged between the upper impact guide element and the lower impact guide element, the parts telescoping in the power box of the upper impact guide element and the lower impact guide element are processed to be cylindrical, the reciprocating segments of the upper impact guide element and the lower impact guide element in the power box are configured to be square or semicircular or crescent or triangular or deformed or the like, in order to reduce the space occupied by the diameter of the cylindrical impact guide element, a connecting rod crank shaft is placed in the saved space thereof, to reduce the height and/or width and the like of the back-to-back groove guide mechanism, so as to correspondingly reduce the height and/or width and the like of the impact head to reduce the impact resistance. 12 The crank connecting rod is arranged at the rears of the upper impact guide element and the lower impact guide element to reduce the space occupied by the crank connecting rod, and only the rolling friction back-to-back groove structure is placed between the upper impact guide element and the lower impact guide element, thus reducing the height and volume of the guide mechanism, decreasing the height of the impact head, reducing the impact area and reducing the impact counterforce. The back-to-back groove guide mechanism includes more than one U-shaped guide frame and/or frame-shaped guide frame and/or cylindrical guide frame or the like, the lower impact guide element of an upper U-shaped guide frame is configured to be close to the upper impact guide element of a lower U-shaped guide frame, to reduce the combination height of the upper U-shaped guide frame and the lower U shaped guide frame and reduce the impact resistance caused by excessive distance between the upper U-shaped guide frame and the lower U-shaped guide frame. The guide rolling body includes a roller and the like, the roller includes an outer wheel and a roller shaft, and the outer wheel and the roller shaft are separately connected or of an integral structure. The guide rolling body includes a roller and the like, the roller includes an outer wheel and a roller shaft, a bearing or a bearing bush or the like is arranged between the outer wheel and the roller shaft, and the bearing or the bearing bush is arranged at the two ends or the middle part of the roller shaft. An anti-breakage mechanism is arranged at the joint of the power impact element and the toothholder or the impact guide element. The anti-breakage mechanism includes a joint bearing, a steering connector, a rzeppa universal joint, a candan universal Joint, a bulb buckling groove type, a cambered buckling groove type or the like. 13 The driving mechanism includes a crank shaft driving mechanism or a hydraulic driving mechanism or a pneumatic driving mechanism or the like. When upper and lower layers of impact heads are arranged, the part telescoping in the power box of the reciprocating travel of the impact guide element is circular, the part close to a main driving shaft of the impact guide element is concave, the main driving shaft penetrates through the concave segment of the impact guide element so as to be engaged with an auxiliary driving shaft, the main driving shaft drives the auxiliary driving shaft to rotate, the auxiliary driving shaft drives a connecting rod to impact in a reciprocating manner, the connecting rod drives the impact heads to impact in a reciprocating manner, and the main driving shaft and the auxiliary driving shaft are separately connected or are integrated. The beneficial effects of the present invention are as follows: 1. By adopting the back-to-back groove mechanism in the present invention, the upper rolling friction groove is closely buckled with the upper impact guide element to prevent the upper impact guide element from swinging left and right, the lower rolling friction groove is closely buckled with the lower impact guide element to prevent the lower impact guide element from swinging left and right, when the upper impact guide element moves upwards, the lower impact guide element tensions the upper impact guide element through the toothholder and the lower rolling friction groove to control the upper impact guide element to not move upwards, when the lower impact guide element moves downwards, the upper impact gu ide element controls the lower impact guide element to not move downwards through the upper rolling friction groove, no rolling body is arranged at the upper part of the upper impact guide element and/or no rolling body is arranged at the lower part of the lower impact guide element, the impact guide element is arranged in the space occupied by the upper rolling body and/or the lower rolling body, and 14 the upper impact guide element and the lower impact guide element are respectively arranged at the two ends of the toothholder, so as to relatively increase the distance between the upper impact guide element and the lower impact guide element to heighten and/or widen the righting force for the toothholder and relatively decrease the height and/or width of the toothholder to relatively decrease the height of the guide mechanism so as to reduce the impact resistance caused by excessive width or excessive height of the toothholder, the upper impact guide element and the lower impact guide element can be arranged at the sites with the maximum distance at the two sides of the toothholder, to increase the supporting moment for the toothholder and improve the lateral force of the toothholder so as to prolong the service lives of the impact head, the guide mechanism and the driving mechanism. 2. The rolling body at the upper part of the upper impact guide element is removed and the rolling body at the lower part of the lower impact guide element is removed to reduce the height of the back-to-back groove guide mechanism, so as to reduce the height of the toothholder, the number of the used rolling bodies is decreased by use of the back-to-back groove guide mechanism, a larger impact head is processed smaller or a single toothholder with the same impact cutting height is changed into multiple toothholders, a single layer of impact heads with the same impact cutting height is changed into the combination of multiple layers of impact heads, the small impact heads of a combined impact head use the same power source, each small impact head generates reduced impact area, large impact force and small impact resistance at each time, multiple smaller impact heads alternatively impact rocks or coal beds or cement coagulation matters or compacted mudstones or the like in a rolling friction reciprocating manner, in order to achieve instantaneous concentrated use of power, and the multiple impact heads alternatively impact, thereby being unlikely to generate resonance, greatly reducing the impact resistance and the 15 breaking force, lowering the energy consumption and improving the safety performance of the equipment. 3. The multiple smaller impact heads alternatively impact rocks or coal beds or cement coagulation matters or compacted mudstones or the like in a rolling friction reciprocating manner at high frequency, in order to achieve instantaneous concentrated use of power, and the multiple impact heads alternatively impact. thereby being unlikely to generate resonance, reducing the impact resistance and the breaking force and improving the efficiency. 4. The rolling friction back-to-back groove structure of the waist drum wheels is arranged in the upper impact guide element and the lower impact guide element, the waist drum wheels control the impact direction of the impact guide element through the grooves, the impact supporting mechanism supports the waist drum wheels through the bearing, the impact counterforce of the impact head is applied on the upper impact guide element and the lower impact guide element, the waist drum wheels support and right the impact head, the waist drum wheels transmit the supporting force and the impact counterforce to the bearing, and the bearing bears the impact counterforce and the supporting force, to greatly reduce the attrition of the back-to-back groove guide mechanism and greatly prolong the service life of the back-to-back groove guide mechanism. 5. The toothholder, the upper impact guide element, the power impact element and the lower impact guide element form the frame-shaped guide frame, the rolling friction back-to-back groove structure is arranged in the frame-shaped guide frame, the upper impact guide element and the lower impact guide element are closely buckled with the rolling friction back-to-back groove structure to support and right the impact direction of the toothholder, and the upper impact guide element and the 16 lower impact guide element increase the righted height and/or width of the toothholder, to further reduce the height of the impact head. 6. The impact supporting mechanism includes the power box, the head of the impact guide element is stretched out from the power box, the sealing element is arranged between the impact guide element and the power box, the telescopic friction segment of the impact guide element is cylindrical, which is conducive to seal, and the cylindrical structure is large in strength and wear resistant. 7. When the crank connecting rod is arranged between the upper impact guide element and the lower impact guide element, the parts telescoping in the power box of the upper impact guide element and the lower impact guide element are processed to be cylindrical, the reciprocating segments of the upper impact guide element and the lower impact guide element in the power box are configured to be square or semicircular or crescent or triangular or deformed, in order to reduce the space occupied by the diameter of the cylindrical impact guide element, the connecting rod crank shaft is placed in the saved space thereof, to further reduce the height and/or width of the back-to-back groove guide mechanism, so as to correspondingly further reduce the height and/or width of the impact head to reduce the impact resistance. 8. The crank connecting rod is arranged at the rears of the upper impact guide element and the lower impact guide element to reduce the space occupied by the crank connecting rod, and only the rolling friction back-to-back groove structure is placed between the upper impact guide element and the lower impact guide element, thus reducing the height and volume of the guide mechanism, the height of the impact head can be reduced to be less than 400mm, a smaller impact head is used for mining low and thin materials, and multiple smaller impact heads are combined to mine high and thick materials, thus enlarging the righting force of the rolling 17 friction back-to-back groove guide mechanism on the impact heads, and being conductive to combining multiple impact heads with low heights to use the same power source to impact and break rocks or concrete or compacted mudstones or the like at high frequency, so as to really achieve such functions of the reciprocating impact mining machine as efficiently and quickly mining rocks, breaking concrete and the like. 9. The lower impact guide element of the paper U-shaped gide frame is configured to be close to the upper impact guide element of the lower U-shaped guide frame, to reduce the combination height of the upper U-shaped guide frame and the lower U shaped guide frame and reduce the impact resistance caused by excessive distance between the upper U-shaped guide frame and the lower U-shaped guide frame. 10. The anti-breakage mechanism is arranged at the joint of the power impact element and the toothholder or the impact guide element, and the anti-breakage mechanism effectively protects the power impact element and avoids damage caused by the impact counterforce to the power impact element. 11. When upper and lower layers of impact heads are arranged, the part telescoping in the power box of the reciprocating travel of the impact guide element is circular, the part close to the main driving shaft of the impact guide element is concave, the main driving shaft penetrates through the concave segment of the impact guide element so as to be engaged with the auxiliary driving shaft, the main driving shaft drives the auxiliary driving shaft to rotate, the auxiliary driving shaft drives the connecting rod to impact in a reciprocating manner, the connecting rod drives the impact heads to impact in a reciprocating manner, and the shape of the impact guide element is changed to further save the combination height of multiple impact heads, thereby ensuring flexible and smart combination of the multiple impact heads. 18 12. The upper impact guide element and the lower impact guide element reciprocate in a rolling friction manner through the upper cambered rolling friction groove and the lower cambered rolling friction groove, the upper cambered rolling friction groove is closely buckled with the upper impact guide element to prevent the upper impact guide element from swinging left and right, the lower cambered rolling friction groove is closely buckled with the lower impact guide element to prevent the lower impact guide element from swinging left and right, due to the upper cambered rolling friction groove and the lower cambered rolling friction groove, the impact guide elements work at the rolling friction state, and the impact guide elements are controlled to swing left and right via rolling friction structures to greatly reduce the friction resistance during reciprocating impact of the impact head and improve the impact efficiency thereof. 13. The guide rolling body is configured as waist drum wheel, a groove or a projection is arranged on the waist drum wheel, a projection or a groove buckled with the waist drum wheel is correspondingly arranged on the impact guide element, the waist drum wheel is arranged in the impact guide element to support the waist drum wheel via a box body or a bracket, the waist drum wheel controls the impact direction of the impact guide element through the groove or the projection, and the contact area between the surface of the waist drum wheel and the surface of the impact guide element is large enough to generate no local attrition. 14. Two or more impact guide elements are arranged on the box body or the bracket, each impact guide element is connected with the two ends of the same toothholder, the impact guide elements are arranged adjacently up and down and/or at left and right, and the power impact element drives the toothholder to reciprocate to decompose the impact resistance formed by an excessive size of the toothholder 19 and/or an excessive distance between the impact guide elements of different toothholders. 15. The impact guide element is a U-shaped power impact element, a guide roller is arranged in the U-shaped power impact element, and the guide roller supports the U-shaped power impact element to impact in a reciprocating manner, to increase the connecting width and/or height of the opening end of the U-shaped power impact element and the toothholder. 16. The bearing or the bearing bush is arranged at the two ends of the roller shaft to increase the bearing capacity of the roller shaft, thus being suitable for equipment with large impact force, high impact frequency and large impact counterforce. 17. The roller body and the roller shaft are integrated, so that the structural strength is large. 18. The anti-breakage mechanism is arranged at the joint of the driving mechanism and the impact head, and the anti-breakage mechanism effectively prevents the impact counterforce from damaging the connecting rod and the impact driving mechanism and buffers the impact vibration on the impact box. 19. The rolling friction back-to-back groove structure greatly reinforces the anti breakage force of each toothholder, the anti-breakage strength thereof is improved to more than twice, the flexibility of combining mining machines with different heights is greatly improved, the rolling friction back-to-back groove structure greatly reduces the volume and height of a single impact head, to enable the impact head to adapt to mine materials with different heights, by reducing the impact resistance and improving the impact force, the mining machines can mine materials with different hardness and different textures, so that the limitation that the mining machines could not mine rocks is broken through, and the application range of the mining machines is expanded. 20 Brief Description of the Drawings Fig.1 is a schematic diagram of a structure of a device for heightening and/or widening and fighting an impact head by using a back-to-back groove in embodiment I Fig. 2 is a schematic diagram of a structure of an impact head in embodiment 1; Fig.3 is a schematic diagram of an arrangement structure of an upper concave rolling friction groove and a lower concave rolling friction groove in embodiment 1; Fig.4 is a schematic diagram of a structure of a roller in embodiment 1; Fig.5 is a front view of embodiment 2; Fig.6 is a front view of embodiment 3; Fig.7 is a schematic diagram of an arrangement structure of a power source in embodiment 3; Fig. 8 is a front view of embodiment 4; Fig.9 is a front view of embodiment 5; Fig.10 is a schematic diagram of an arrangement structure of a groove in embodiment 6; Fig. I I is a schematic diagram of a structure of a waist drum wheel in embodiment 6; Fig. 12 is a front view of embodiment 7; Fig. 13 is a schematic diagram of an arrangement structure of a driving mechanism in embodiment 7; Fig. 14 is a schematic diagram of a structure of a waist drum wheel in embodiment 7; Fig.15 is a schematic diagram of a structure of a roller in embodiment 7; Fig. 16 is a front view of embodiment 8; Fig. 17 is a front view of embodiment 9; 21 Fig.1 8 is a schematic diagram of another structure of an impact head in embodiment 9; Fig. 19 is a front view of embodiment 10; Fig .20 is a front view of embodiment 11; Fig.21 is a front view of embodiment 12; Fig.22 is a front view of embodiment 13; Fig.23 is a front view of embodiment 14; Fig.24 is a front view of embodiment 15: Fig.25 is a front view of embodiment 16. In the figures, 1. upper concave rolling friction groove; 2. lower impact guide element; 3. impact head; 4. toothholder; 5. upper impact guide element; 6. guide rolling body: 7. impact guide element: 8. power impact element 9. driving mechanism; 10. rolling friction back-to-back groove structure 11. lower concave rolling friction groove; 12. impact supporting mechanism; 13. upper cambered rolling friction groove; 14. lower cambered rolling friction groove; 15. U-shaped guide frame: 16. rolling body; 17. combined impact head; 18. power source 19. small impact head; 20. projection; 21. waist drum wheel; 22. groove; 23. bearing; 24. roller 25. roller shaft; 26. outer wheel; 27. left impact guide element; 28. left guide rolling body; 29. right guide rolling body; 30. right impact guide element; 31. impact tooth; 32. sealing element; 33. power box; 34. cylinder; 35. crank connecting rod; 36. crescent; 37. back-to-back groove guide mechanism; 38. frame-shaped guide frame; 39. anti-breakage mechanism; 40. main driving shaft: 41. concave shape. Detailed Desciription of the Embodiments 22 The present invention will be further illustrated in detail below in combination with accompanying drawings. Embodiment 1 Fig.1 to Fig.4 show a method for heightening and/or widening and righting an impact head by using a back-to-back groove and a device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 1, the device for heightening and/or widening and righting the impact head by using the back-to-back groove includes a back-to back groove guide mechanism 37, an impact supporting mechanism 12, a driving mechanism 9. an impact head 3 and the like, wherein the impact head 3 includes a toothholder 4 and the like, the back-to-back groove guide mechanism 37 includes a rolling friction back-to-back groove structure 10, an impact guide element 7 and the like, the rolling friction back-to-back groove structure 10 includes an upper rolling friction groove 22, a lower rolling friction groove 22 and the like, the upper rolling friction groove 22 and the lower rolling friction groove 22 include guide rolling bodies 6 and the like, the impact guide element 7 includes an upper impact guide element 5, a lower impact guide element 2 and the like, the upper impact guide element 5 and the lower impact guide element 2 are respectively fixed at the two ends of the same toothholder 4, no guide rolling body 6 is arranged at the outside of the upper part of the upper impact guide element 5, no guide rolling body 6 is arranged at the outside of the lower part of the lower impact guide element 2, the upper impact guide element 5 is buckled in the upper rolling friction groove 22 and the lower impact guide element 2 is buckled in the lower rolling friction groove 22 to form the back-to-back groove guide mechanism 37, the impact supporting mechanism 12 supports the rolling friction back-to-back groove structure 10, the driving mechanism 9 includes a power impact element 8 and the like, the power 231 impact element 8 is connected with the toothholder 4 or the impact guide element 7. the power impact element 8 drives the impact guide element 7 and/or the toothholder 4 to reciprocate in a rolling friction manner, the rolling friction back-to back groove structure 10 supports the impact guide element 7 to reciprocate in a rolling friction manner, the impact guide element 7 is placed in a space occupied by an external guide rolling body 6, the impact guide element 7 increases the righted height and/or width of the impact head 3, and the rolling friction back-to-back groove structure 10 and the impact guide element 7 right the reciprocating direction of the toothhol der 4. The upper rolling friction groove 22 includes an upper cambered rolling friction groove 13 and the like, and the lower rolling friction groove 22 includes a lower cambered rolling friction groove 14 and the like. The driving mechanism 9 is a crank shaft driving mechanism 9, and the driving mechanism 9 can also be a hydraulic driving mechanism 9 or a pneumatic driving mechanism 9 or the like. The present invention further includes the following methods: Method 1: the upper rolling friction groove 22, the lower rolling friction groove 22 and the like are arranged, the groove 22 bottom of the upper rolling friction groove 22 and the groove 22 bottom of the lower rolling friction groove 22 are arranged in a back to back mariner to form the rolling friction back- to-back groove structure 10 and the like, the upper impact guide element 5 is arranged on the concave surface of the upper rolling friction groove 22, the lower impact guide element 2 and the like is arranged on the concave surface of the lower rolling friction groove 22, the lower impact guide element 2 is fixed at the lower end and the like of the toothholder 4, the upper impact guide element 5 is fixed at the upper end of the toothholder 4, the upper rolling friction groove 22 and the lower rolling friction groove 22 are 24 arranged in a U-shaped guide frame 15 or a frame-shaped guide frame or a cylindrical guide frame or the like forced by the toothholder 4, the upper impact guide element 5 and the lower impact guide element 2, the upper impact guide element 5, the lower impact guide element 2 and the like are correspondingly buckled on the upper rolling friction groove 22, the lower rolling friction groove 22 and the like via the toothholder 4. the power impact element 8 drives the toothholder 4 or the upper impact guide element 5 and the lower impact guide element 2 and the like to reciprocate, the upper impact guide element 5 and the lower impact guide element 2 reciprocate in a rolling friction manner by means of the upper rolling friction groove 22, the lower rolling friction groove 22 and the like, the upper rolling friction groove 22 is closely buckled with the upper impact guide element 5 to prevent the upper impact guide element 5 from swinging left and right, the lower rolling friction groove 22 is closely buckled with the lower impact guide element 2 to prevent the lower impact guide element 2 from swinging left and right, when the upper impact guide element 5 moves upwards, the lower impact guide element 2 tensions the upper impact guide element 5 through the toothholder 4, the lower rolling friction groove 22 and the like to control the upper impact guide element 5 to not move upwards, when the lower impact guide element 2 moves downwards, the upper impact guide element 5 controls the lower impact guide element 2 to not move downwards through the upper rolling friction groove 22 and the like, no rolling body 16 is arranged at the upper part of the upper impact guide element 5 and/or no rolling body 16 is arranged at the lower part of the lower impact guide element 2, the impact guide element 7 is arranged in a space occupied by an upper rolling body 16 and/or a lower rolling body 16, and the upper impact guide element 5, the lower impact guide element 2 and the like are respectively arranged at the two ends of the toothholder 4, so as to relatively increase the distance between the upper 25 impact guide element 5 and the lower impact guide element 2 to heighten and/or widen the righting force for the toothholder 4. and the height and/or width of the toothholder 4 are relatively decreased to reduce the impact resistance caused by excessive width or excessive height of the toothholder 4. Method 2: The rolling body 16 at the upper part of the upper impact guide element 5 is removed and the rolling body 16 at the lower part of the lower impact guide element 2 is removed to reduce the height of the back-to-back groove guide mechanism 37 so as to reduce the height and the like of the toothholder 4, the number of the used rolling bodies 16 is decreased by use of the back-to-back groove guide mechanism 37, a larger impact head 3 is processed smaller or a single toothholder 4 with the same impact cutting height is changed into multiple toothholders 4, a single layer of impact heads 3 with the same impact cutting height is changed into the combination of multiple layers of impact heads 3, the small impact heads 3 of a combined impact head 17 use the same power source 18 and the like, each small impact head 3 generates reduced impact area, large impact force and small impact resistance at each time, each impact head 3 impacts in a rolling friction reciprocating manner, and multiple smaller impact heads 19 alternatively impact rocks or coal beds or cement coagulation matters or compacted mudstones or the like in a rolling friction reciprocating manner, in order to achieve instantaneous concentrated use of power, and the multiple impact heads 3 alternatively impact, thereby being unlikely to generate resonance and reducing the impact resistance and the breaking force. Method 3: The upper roiling friction groove 22 and the lower rolling friction groove 22 are arranged in such forms as left and right back-to-back grooves and/or upper and 26 lower back-to-back grooves and the like, in order to control the left and right movements and/or up and down movements of the impact guide element 7. Method 4: A larger impact head 3 and the like is processed smaller or a larger impact head 3 is decomposed into multiple smaller impact heads 19 and the like, one smaller impact head 19 or multiple smaller impact heads 19 impact at high frequency to strengthen the impact force, and each impact head 3 impacts in a rolling friction reciprocating manner, the multiple smaller impact heads 19 alternatively impact rocks or coal beds or cement coagulation matters or compacted mudstones or the like in a rolling friction reciprocating manner, in order to achieve instantaneous concentrated use of power, and the multiple impact heads 3 alternatively impact, thereby being unlikely to generate resonance, reducing the impact resistance and the breaking force and the like and improving the efficiency. Method 5: The rolling friction back-to-back groove structure 10 is configured as a rolling friction back-to-back groove structure 10 of waist drum wheels 21 and the like, grooves 22 and the like are arranged on the waist drum wheels 21, projections 20 or circular arcs or the like buckled with the waist drum wheels 21 are correspondingly arranged on the upper impact guide element 5 and the lower impact guide element 2, and an upper groove 22 of an upper waist drum wheel 21 and a lower groove 22 and the like of a lower waist drum wheel 21 form the rolling friction back-to-back groove structure 10 of the waist drum wheels 21. Method 6: The rolling friction back-to-back groove structure 1( of the waist drum wheels 21 is arranged in the upper impact guide element 5 and the lower impact guide element 2, the waist drum wheels 21 control the impact direction of the impact guide element 7 27 through the groove, the impact supporting mechanism 12 supports the waist drum wheels 21 and the like through a bearing 23, the impact counterforce of the impact head 3 is applied on the upper impact guide element 5 and the lower impact guide element 2. the waist drum wheels 21 support and right the impact head 3, the waist drum wheels 21 transmit the supporting force and the impact counterforce to the bearing 23, and the bearing 23 bears the impact counterforce and the supporting force, to greatly prolong the service life of the back-to-back groove guide mechanism 37. Method 7: The upper impact guide element 5., the lower impact guide element 2 and the like are arranged, one ends of the upper impact guide element 5, the lower impact guide element 2 and the like are respectively arranged at the upper end, the lower end and the like of the same toothholder 4, the other ends of the upper impact guide element 5 and the lower impact guide element 2 are respectively connected with the upper end and the lower end of the same power impact element 8, the toothholder 4, the upper impact guide element 5. the power impact element 8 and the lower impact guide element 2 form a frame-shaped guide frame 38, the rolling friction back-to back groove structure 10 is arranged in the frame-shaped guide frame 38, the upper impact guide element 5 and the lower impact guide element 2 are closely buckled with the rolling friction back-to-back groove structure 10 to support and right the impact direction of the toothholder 4, and the upper impact guide element 5 and the lower impact guide element 2 increase the righted height and/or width of the toothholder 4. Embodiment 2 Fig.5 shows the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in 28 embodiment 2, which is different from embodiment 1 in that: the upper cambered rolling friction groove 13 and the lower cambered rolling friction groove 14 are arranged in the U-shaped guide frame 15 or the frame-shaped guide frame 38 or the cylindrical guide frame formed by the toothholder 4. the upper impact guide element 5 and the lower impact guide element 2, the upper impact guide element 5 and the lower impact guide element 2 are correspondingly buckled on the upper cambered rolling friction groove 13, the lower cambered rolling friction groove 14 and the like via the toothholder 4, the power impact element 8 drives the toothholder 4 or the upper impact guide element 5. the lower impact guide element 2 and the like to reciprocate, the upper impact guide element 5. the lower impact guide element 2 and the like reciprocate in a rolling friction manner under the support of the upper cambered rolling friction groove 13 and the lower cambered rolling friction groove 14, the upper cambered rolling friction groove 13 is closely buckled with the upper impact guide element 5 and the like to prevent the upper impact guide element 5 from swinging left and right, the lower cambered rolling friction groove 14 is closely buckled with the lower impact guide element 2 and the like to prevent the lower impact guide element 2 from swinging left and right, when the upper impact guide element 5 moves upwards, the lower impact guide element 2 tensions the upper impact guide element 5 through the toothholder 4, the lower cambered rolling friction groove 14 and the like to control the upper impact guide element 5 to not move upwards, and when the lower impact guide element 2 moves downwards, the upper impact guide element 5 controls the lower impact guide element 2 to not move downwards through the upper cambered rolling friction groove 13 and the like. The rest is the same as embodiment 1. Embodiment 3 29 Fig.6 to Fig.7 show the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 3, which is different from embodiment I in that: the rolling bodies 16 at the upper part of the upper impact guide element 5 are decreased and the rolling bodies 16 and the like at the lower pal of the lower impact guide element 2 are decreased to reduce the height of the back-to-back groove guide mechanism 37, so as to reduce the height of the toothholder 4 and the like, the number of the used rolling bodies 16 is decreased by use of the back-to-back groove guide mechanism 37, a larger impact head 3 is processed smaller or a single toothholder 4 with the same impact cutting height is divided into multiple toothholders 4. a single layer of impact heads 3 with the same impact cutting height is changed into the combination of multiple layers of impact heads 3 and the like, the small impact heads 3 of a combined impact head 17 use the same power source 18 and the like, each small impact head 3 generates reduced impact area, large impact force and small impact resistance at each time, each impact head 3 impacts in a rolling friction reciprocating manner, and multiple smaller impact heads 19 alternatively impact rocks or coal beds or cement coagulation matters or compacted mudstones or the like in a rolling friction reciprocating manner, in order to achieve instantaneous concentrated use of power, and the multiple impact heads 3 alternatively impact, thereby being unlikely to generate resonance and reducing the impact resistance and the breaking force. The rest is the same as embodiment 1. Embodiment 4 Fig.8 shows the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 4, which is different from embodiment I in that: the upper cambered 30 rolling friction groove 13, the lower cambered rolling friction groove 14 and the like are arranged in such forms as left and right back-to-back grooves and/or upper and lower back-to-back grooves and the like, in order to control the left and right movements and/or up and down movements of the impact guide element 7. The rest is the same as embodiment 1. Embodiment 5 Fig.9 shows the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 5, which is different from embodiment I in that: a larger impact head 3 is processed smaller or a larger impact head 3 is decomposed into multiple smaller impact heads 19, one smaller impact head 19 or multiple smaller impact heads 19 impact at high frequency, the multiple smaller impact heads 19 alternatively impact rocks or coal beds or cement coagulation matters or compacted mudstones or the like in a rolling friction reciprocating manner, in order to achieve instantaneous concentrated use of power, and the multiple impact heads 3 alternatively impact, thereby being unlikely to generate resonance, reducing the impact resistance and the breaking force and the like and improving the efficiency. The rest is the same as embodiment I Embodiment 6 Fig. 10 to Fig II show the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 6, which is different from embodiment I in that: the cambered rolling friction groove includes waist drum wheels 21 and the like, grooves 22 and the like are arranged on the waist drum wheels 21, projections 20 or circular arcs and the like buckled with the waist drum wheels 21 are correspondingly arranged on the upper impact guide element 5, the lower impact guide element 2 and the like, and an 31 upper groove 22 of an upper waist drum wheel 21 and a lower groove 22 of a lower waist drum wheel 21 form the rolling friction back-to-back groove structure 10 of the waist drum wheels 21. The rolling friction back-to-back groove of the waist drum wheels 21 is arranged in the upper impact guide element 5. the lower impact guide element 2 and the like, the waist drum wheels 21 control the impact direction of the impact guide element 7 through the grooves 22, the impact supporting mechanism 12 supports the waist drum wheel 21 through a bearing 23 and the like, the impact counterforce of the impact head 3 is applied on the upper impact guide element 5, the lower impact guide element 2 and the like, the waist drum wheels 21 support and right the impact head 3 and the like, the waist drum wheels 21 transmit the supporting force and the impact counterforce to the bearing 23 and the like, and the bearing 23 bears the impact counterforce and the supporting force, to greatly improve the performance of and prolong the service life of the back-to-back groove guide mechanism 37. The rest is the same as embodiment 1. Embodiment 7 Fig. 12 to Fig. 15 show the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 7, which is different from embodiment 1 in that: one ends of the upper impact guide element 5 and the lower impact guide element 2 are respectively arranged at the upper end, the lower end and the like of the same toothholder 4, the other ends of the upper impact guide element 5 and the lower impact gide element 2 are respectively connected with the upper end, the lower end and the like of the same power impact element 8, the toothholder 4, the upper impact guide element 5, the power impact element 8 and the lower impact guide element 2 form the frame shaped guide frame 38 and the like, the rolling friction back-to-back groove structure 10 and the like is arranged in the frame-shaped guide frame 38, the upper impact guide element 5 and the lower impact guide element 2 are closely buckled with the rolling friction back-to-back groove structure 10 to support and right the impact direction of the toothholder 4. the upper impact guide element 5 and the lower impact guide element 2 increase the righted height and/or width of the toothholder 4, in order to relatively reduce the height and the like of the driving mechanism 9 and reduce the breaking damage caused by a small righting amplitude of the impact guide element 7 on the driving mechanism 9, and the upper impact guide element 5 and the lower impact guide element 2 are separated from or separately connected or integrated with the power impact element 8. The rolling friction back-to-back groove structure 10 includes two or more waist drum wheels 21 and the like, the two or more than two waist drum wheels 21 and the like are arranged in the upper impact guide element 5 and the lower impact guide element 2 and/or in the left impact guide element 27 and the right impact guide element 30 and the like, and the upper and lower and/or left and right waist drum wheels 21 right the impact direction of the impact guide element 7. The guide rolling body 6 includes a roller 24 and the like, the impact guide element 7 supports the roller 24 and the like, the roller 24 includes a roller shaft 25 and the like, the roller shaft 25 is directly arranged in the impact guide element 7 or is arranged in the impact guide element 7 through the bearing 23 or is arranged in the impact guide element 7 through a shaft sleeve, the outside diameter of the roller 24 is larger than that of the impact guide element 7, and the impact guide element 7 provided with the roller 24 forms rolling friction with the impact supporting mechanism 12.

The guide rolling body 6 includes a roller 24 and the like, the roller 24 includes an outer wheel 26, a roller shaft 25 and the like, the outer wheel 26 and the roller shaft 25 are separately connected or of an integral structure. The rest is the same as embodiment 1. Embodiment 8 Fig.16 shows the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 8, which is different from embodiment 1 in that: the U-shaped guide frame 15 includes a left impact guide element 27, a right impact guide element 30 and the like, the guide rolling body 6 includes a left guide rolling body 28, a right guide rolling body 29 and the like, the guide rolling bodies 6 are arranged at the inner sides of the left impact guide element 27, the right impact guide element 30 and the like, and the left guide rolling body 28 and the right guide rolling body 30 are respectively buckled with the left impact guide element 27, the right impact guide element 30 and the like. The rest is the same as embodiment 1. Embodiment 9 Fig.17 to Fig.18 show the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 9, which is different from embodiment 1 in that: the impact head 3 includes the toothholder 4, impact teeth 31 and the like, the toothholder 4 is arranged at one or two ends of the impact guide element 7, the toothholder 4 is separately connected or integrated with the impact teeth 31, and the toothholder 4 is separately connected or integrated with the impact guide element 7. The rest is the same as embodiment 1. Embodiment 10 34 Fig.19 shows the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 10., which is different from embodiment I in that: the impact supporting mechanism 12 includes a power box 33 and the like, the head of the impact guide element 7 is stretched out from the power box 33, a sea ing element 32 and the like is arranged between the impact guide element 7 and the power box 33, and the telescopic friction segment of the impact gide element 7 is cylindrical, and the like. The rest is the same as embodiment 1. Embodiment II Fig.20 shows the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 11, which is different from embodiment I in that: when a crank connecting rod 35 and the like is arranged between the upper impact guide element 5 and the lower impact guide element 2, the parts telescoping in the power box 33 of the upper impact guide element 5 and the lower impact guide element 2 are processed to be cylindrical and the like, the reciprocating segments of the upper impact guide element 5 and the lower impact guide element 2 in the power box 33 are configured to be square or semicircular or crescent 36 or triangular or deformed or the like, in order to reduce the space occupied by the diameter of the cylindrical impact guide element 7, a connecting rod crank shaft and the like is placed in the saved space thereof, to reduce the height and/or width of the back-to-back groove guide mechanism 37, so as to correspondingly reduce the height and/or width of the impact head 3 to reduce the impact resistance, and the like. The rest is the same as embodiment 1. Embodiment 12 35 Fig.21 shows the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 12, which is different from embodiment I in that: the crank connecting rod 35 and the like is arranged at the rears of the upper impact guide element 5 and the lower impact guide element 2 to reduce the space occupied by the crank connecting rod 35, and only the rolling friction back-to-back groove structure 10 and the like is placed between the upper impact guide element 5 and the lower impact guide element 2, thus reducing the height and volume of the guide mechanic., decreasing the height of the impact head 3, reducing the impact area and reducing the impact counterforce. The rest is the same as embodiment 1. Embodiment 13 Fig.22 shows the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 13, which is different from embodiment 1 in that: the back-to-back groove guide mechanism 37 includes more than one U-shaped guide frame 15 and/or frame-shaped guide frame and/or cylindrical guide frame or the like, the lower impact guide element 2 of an upper U-shaped guide frame 15 is configured to be close to the upper impact guide element 5 of a lower U-shaped guide frame 15, to reduce the combination height of the upper U-shaped guide frame 15 and the lower U-shaped guide frame 15 and reduce the impact resistance caused by excessive distance between the upper U-shaped guide frane 15 and the lower U-shaped guide frame 15 and the like. The rest is the same as embodiment 1. Embodiment 14 36 Fig.23 shows the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 14, which is different from embodiment I in that: the guide rolling body 6 includes a roller 24 and the like, the roller 24 includes an outer wheel 26, a roller shaft 25 and the like, the bearing 23 or a bearing bush or the like is arranged between the outer wheel 26 and the roller shaft 25, and the bearing 23 or the bearing bush is arranged at the two ends or the middle part or the like of the roller shaft 25. The bearing 23 or the bearing bush and the like is arranged at the two ends of the roller shaft 25. The rest is the same as embodiment 1. Embodiment 15 Fig.24 shows the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 15. which is different from embodiment I in that: an anti-breakage mechanism 39 and the like is arranged at the joint of the power impact element 8 and the toothholder 4 or the impact guide element 7. The anti-breakage mechanism 39 includes a joint bearing 23, a steering connector, a rzeppa universal joint, candan universal joinit, a bulb buckling groove type, a cambered buckling groove type or the like. The rest is the same as embodiment 1. Embodiment 16 Fig.25 shows the device for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove in embodiment 16, which is different from embodiment I in that: when upper and lower layers of impact heads 3 are arranged, the part telescoping in the power box 33 of the reciprocating travel of the impact guide element 7 is circular, the part close Jg7 to a main driving shaft 40 and the like of the impact guide element 7 is concave, the main driving shaft 40 penetrates through the concave segment 41 of the impact guide element 7 so as to be engaged with an auxiliary driving shaft, the main driving shaft 40 drives the auxiliary driving shaft and the like to rotate, the auxiliary driving shaft drives a connecting rod and the like to impact in a reciprocating manner, the connecting rod drives the impact heads 3 and the like to impact in a reciprocating manner, and the main driving shaft 40 and the auxiliary driving shaft are separately connected or are integrated. The rest is the same as embodiment 1. 38

Claims

1. A method for heightening and/or widening and righting an impact head by using a back-to-back groove, comprising: an upper rolling friction groove and a lower rolling friction groove are arranged, the groove bottom of the upper rolling friction groove and the groove bottom of the lower rolling friction groove are arranged in a back to back manner to forn a rolling friction back-to-back groove structure, an upper impact guide element is arranged on the concave surface of the upper rolling friction groove, a lower impact guide element is arranged on the concave surface of the lower roiling friction groove, the lower impact guide element is fixed at the lower end of a toothholder, the upper impact guide element is fixed at the upper end of the toothholder, the upper rolling friction groove and the lower rolling friction groove are arranged in a U-shaped guide frame or a frame-shaped guide frame or a cylindrical guide frame formed by the toothholder, the upper impact guide element and the lower impact guide element, the upper impact guide element and the lower impact guide element are correspondingly buckled on the upper rolling friction groove and the lower rolling friction groove via the toothholder, a power impact element drives the toothholder or the upper impact guide element and the lower impact guide element to reciprocate, the upper impact guide element and the lower impact guide element reciprocate in a rolling friction manner by means of the upper rolling friction groove and the lower rolling friction groove, the upper rolling friction groove is closely buckled with the upper impact guide element to prevent the upper impact guide element from swinging left and right, the lower rolling friction groove is closely buckled with the lower impact guide element to prevent the lower impact guide element from swinging left and right, when the upper impact guide element moves upwards, the lower impact guide element tensions the upper 39 impact guide element through the toothholder and the lower rolling friction groove to control the upper impact guide element to not move upwards, when the lower impact guide element moves downwards, the upper impact guide element controls the lower impact guide element to not move downwards through the upper rolling friction groove, no rolling body is arranged at the upper part of the upper impact guide element and/or no rolling body is arranged at the lower part of the lower impact guide element, the impact guide element is arranged in a space occupied by an upper rolling body and/or a lower rolling body, and the upper impact guide element and the lower impact guide element are respectively arranged at the two ends of the toothholder, so as to relatively increase the distance between the upper impact guide element and the lower impact guide element to heighten and/or widen the righting force for the toothholder and relatively decrease the height and/or width of the toothholder to reduce the impact resistance caused by excessive width or excessive height of the toothholder.

2. The method for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 1, wherein the rolling body at the upper part of the upper impact guide element is removed and the rolling body at the lower part of the lower impact guide element is removed to reduce the height of the back-to back groove guide mechanism, so as to reduce the height of the toothholder, the number of the used rolling bodies is decreased by use of the back-to-back groove guide mechanism, a larger impact head is processed smaller or a single toothholder with the same impact cutting height is changed into multiple toothholders, a single layer of impact heads with the same impact cutting height is changed into the combination of multiple layers of impact heads, the small impact heads of a combined impact head use the same power source, each small impact head generates reduced impact area, large impact force and small impact resistance at each time, 40 each impact head impacts in a rolling friction reciprocating manner, multiple smaller impact heads alternatively impact rocks or coal beds or cement coagulation matters or compacted mudstones in a rolling friction reciprocating manner, in order to achieve instantaneous concentrated use of power, and the multiple impact heads alternatively impact, thereby being unlikely to generate resonance and reducing the impact resistance and the breaking force.

3. The method for heightening and'or widening and righting the impact head by using the back-to-back groove of claim 1, wherein the upper rolling friction groove and the lower rolling friction groove are arranged in the forms of left and right back to-back grooves and/or upper and lower back-to-back grooves, in order to control the left and right movements and/or up and down movements of the impact guide element.

4. The method for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 1, wherein a larger impact head is processed smaller or a larger impact head is decomposed into multiple smaller impact heads, one smaller impact head or multiple smaller impact heads impact at high frequency to strengthen the impact force, and each impact head impacts in a rolling friction reciprocating manner, the multiple smaller impact heads alternatively impact rocks or coal beds or cement coagulation matters or compacted mudstones in a rolling friction reciprocating manner, in order to achieve instantaneous concentrated use of power, and the multiple impact heads alternatively impact, thereby being unlikely to generate resonance, reducing the impact resistance and the breaking force and improving the efficiency.

5. The method for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 1, wherein the rolling friction back-to-back groove is configured as a rolling friction back-to-back groove structure of waist 41 drum wheels, grooves are arranged on the waist drum wheels, projections or circular arcs buckled with the waist drum wheels are correspondingly arranged on the upper impact guide element and the lower impact guide element, and an upper groove of an upper waist drum wheel and a lower groove of a lower waist drum wheel form the rolling friction back-to-back groove structure of the waist drum wheels.

6. The method for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 1, wherein the rolling friction back-to-back groove structure of the waist drum wheels is arranged in the upper impact guide element and the lower impact guide element, the waist drum wheels control the impact direction of the impact guide element through the grooves, the impact supporting mechanism supports the waist drum wheels through a bearing, the impact counterforce of the impact head is applied on the upper impact guide element and the lower impact guide element, the waist drum wheels support and right the impact head, the waist drum wheels transmit the supporting force and the impact counterforce to the bearing, and the bearing bears the impact counterforce and the supporting force, to greatly prolong the service life of the back-to-back groove guide mechanism.

7. The method for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 1, wherein the upper impact guide element and the lower impact guide element are arranged, one ends of the upper impact guide element and the lower impact guide element are respectively arranged at the upper end and the lower end of the same toothholder, the other ends of the upper impact guide element and the lower impact guide element are respectively connected with the upper end and the lower end of the same power impact element, the toothholder, the upper impact guide element, the power impact element and the lower impact guide element form the frame-shaped guide frame, the rolling friction 42 back-to-back groove structure is arranged in the frame-shaped guide frame, the upper impact guide element and the lower impact guide element are closely buckled with the rolling friction back-to-back groove structure to support and right the impact direction of the toothholder, and the upper impact guide element and the lower impact guide element increase the righted height and/or width of the toothholder.

8. A device for heightening and/or widening and righting the impact head by using the back-to-back groove, for implementing the method for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 1, wherein the device for heightening and/or widening and righting the impact head by using the back-to-back groove comprises a back-to-back groove guide mechanism, an impact supporting mechanism, a driving mechanism and an impact head, the impact head comprises a toothholder, the back-to-back groove guide mechanism comprises a rolling friction back-to-back groove structure and an impact guide element, the rolling friction back-to-back groove structure comprises an upper rolling friction groove and a lower rolling friction groove, the upper rolling friction groove and the lower rolling friction groove comprise guide rolling bodies, the impact guide element comprises an upper impact guide element and a lower impact guide element, the upper impact guide element and the lower impact guide element are respectively fixed at the two ends of the same toothholder, no guide rolling body is arranged at the outside of the upper part of the upper impact guide element, no gu ide rolling body is arranged at the outside of the lower part of the lower impact guide element, the upper impact guide element is buckled in the upper rolling friction groove and the lower impact guide element is buckled in the lower rolling friction groove to form the back-to-back groove guide mechanism, the impact supporting mechanism supports the rolling friction back-to-back groove structure, 43 the driving mechanism comprises a power impact element, the power impact element is connected with the toothholder or the impact guide element, the power impact element drives the impact guide element and/or the toothholder to reciprocate in a rolling friction manner, the rolling friction back-to-back groove structure supports the impact guide element to reciprocate in a rolling friction manner, the impact guide element is placed in a space occupied by an external guide rolling body, the impact guide element increases the righted height and/or width of the impact head, and the rolling friction back-to-back groove structure and the impact guide element right the reciprocating direction of the toothholder.

9. The device for heighitening and/or widening and righting the impact head by using the back-to-back groove of claim 8, wherein the upper rolling friction groove comprises an upper cambered rolling friction groove, and the lower rolling friction groove comprises a lower cambered rolling friction groove.

10. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8 or 9. wherein the upper cambered rolling friction groove and the lower cambered rolling friction groove are arranged in a U shaped guide frame or a frame-shaped guide frame or a cylindrical guide frame formed by the toothholder, the upper impact guide element and the lower impact guide element, the upper impact guide element and the lower impact guide element are correspondingly buckled on the upper cambered rolling friction groove and the lower cambered rolling friction groove via the toothholder, the power impact element drives the toothholder or the upper impact guide element and the lower impact guide element to reciprocate, the upper impact guide element and the lower impact guide element reciprocate in a rolling friction manner under the support of the upper cambered rolling friction groove and the lower cambered rolling friction groove, the upper cambered rolling friction groove is closely buckled with the upper 44 impact guide element to prevent the upper impact guide element from swinging left and right, the lower cambered rolling friction groove is closely buckled with the lower impact guide element to prevent the lower impact guide element from swinging left and right, when the upper impact guide element moves upwards, the lower impact guide element tensions the upper impact guide element through the toothholder and the lower cambered rolling friction groove to control the upper impact guide element to not move upwards, and when the lower impact guide element moves downwards, the upper impact guide element controls the lower impact guide element to not move downwards through th upper cambered roiling friction groove.

11. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8 or 9, wvherein the rolling bodies at the upper part of the upper impact guide element are decreased and the rolling bodies at the lower part of the lower impact guide element are decreased to reduce the height of the back-to-back groove guide mechanism, so as to reduce the height of the toothholder., the number of the used rolling bodies is decreased by use of the back to-back groove guide mechanism, a larger impact head is processed smaller or a single toothholder with the same impact cutting height is divided into multiple toothholders, a single layer of impact heads with the same impact cutting height is changed into the combination of multiple layers of impact heads, the small impact heads of a combined impact head use the same power source, each small impact head generates reduced impact area, large impact force and small impact resistance at each time, each impact head impacts in a rolling friction reciprocating manner, and multiple smaller impact heads alternatively impact rocks or coal beds or cement coagulation matters or compacted mudstones in a rolling friction reciprocating manner, in order to achieve instantaneous concentrated use of power, and the 45 multiple impact heads alternatively impact, thereby being unlikely to generate resonance and reducing the impact resistance and the breaking force.

12. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8 or 9, wherein the upper cambered rolling friction groove and the lower cambered rolling friction groove are arranged in the forms of left and right back-to-back grooves and/or upper and lower back-to-back grooves, in order to control the left and right movements and/or up and down movements of the impact guide element.

13. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8 or 9, wherein the cambered rolling friction groove comprises waist drum wheels, grooves are arranged on the waist drum wheels, projections or circular arcs buckled with the waist drum wheels are correspondingly arranged on the upper impact guide element and the lower impact guide element, and an upper groove of an upper waist drum wheel and a lower groove of a lower waist drum wheel form the rolling friction back-to-back groove structure of the waist drum w heels.

14. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 13, wherein the rolling friction back-to-back groove of the waist drum wheels is arranged in the upper impact guide element and the lower impact guide element, the waist drum wheels control the impact direction of the impact guide element through the grooves, the impact supporting mechanism supports the waist drum wheels through a bearing, the impact counterforce of the impact head is applied on the upper impact guide element and the lower impact guide element, the waist drum wheels support and right the impact head, the waist drum wheels transmit the supporting force and the impact counterforce to the bearing, and the bearing bears the impact counterforce and the supporting force, to 46 greatly improve the performance of and prolong the service life of the back-to-back groove guide mechanism.

15. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8 or 9, wherein one ends of the upper impact gu ide element and the lower impact guide element are respectively arranged at the upper end and the lower end of the same toothholder, the other ends of the upper impact guide element and the lower impact guide element are respectively connected with the upper end and the lower end of the same power impact element, the toothholder, the upper impact guide element, the power impact element and the lower impact guide element form the frame-shaped guide frame, the rolling friction back-to-back groove structure is arranged in the frane-shaped guide frame, the upper impact guide element and the lower impact guide element are closely buckled with the rolling friction back-to-back groove structure to support and right the impact direction of the toothholder, the upper impact guide element and the lower impact guide element increase the righted height and/or width of the toothholder, in order to relatively reduce the height of the driving mechanism and reduce the breaking damage caused by a small righting amplitude of the impact guide element on the driving mechanism, and the upper impact guide element and the lower impact guide element are separated from or separately connected or integrated with the power impact element.

16. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 10, wherein the U-shaped guide frame comprises a left impact guide element and a right impact guide element. the guide rolling body comprises a left guide rolling body and a right guide rolling body,. the guide rolling bodies are arranged at the inner sides of the left impact guide element and the right impact guide element, and the left guide rolling body and the right 47 guide rolling body are respectively buckled with the left impact guide element and the right impact guide element.

17. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8, wherein the impact head comprises the toothholder and impact teeth, the toothholder is arranged at one or two ends of the impact guide element, the toothholder is separately connected or integrated with the impact teeth, and the toothholder is separately connected or integrated with the impact guide element.

18. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8. wherein the rolling friction back-to-back groove structure comprises two or more waist drum wheels, the two or more waist drum wheels are arranged in the upper impact guide element and the lower impact guide element and/or in the left impact guide element and the right impact guide element, and the upper and lower and/or left and right waist drum wheels right the impact directions of the impact guide elements.

19. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8, wherein the guide rolling body comprises a roller, the impact guide element supports the roller, the roller comprises a roller shaft, the roller shaft is directly arranged in the impact guide element or is arranged in the impact guide element through a bearing or is arranged in the impact guide element through a bearing sleeve, the outside diameter of the roller is larger than that of the impact guide element, and the impact guide element provided with the roller forms rolling friction with the impact supporting mechanisin.

20. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8, wherein the impact supporting mechanism comprises a power box, the head of the impact guide element is 48 stretched out from the power box, a sealing element is arranged between the impact guide element and the power box, and the telescopic friction segment of the impact guide element is cylindrical.

21. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8, wherein when a crank connecting rod is arranged between the upper impact guide element and the lower impact guide element, the parts telescoping in the power box of the upper impact guide element and the lower impact guide element are processed to be cylindrical the reciprocating segments of the upper impact guide element and the lower impact guide element in the power box are configured to be square or semicircular or crescent or triangular or deformed, in order to reduce the space occupied by the diameter of the cylindrical impact guide element, a connecting rod crank shaft is placed in the saved space thereof, to reduce the height and/or width of the back-to back groove guide mechanism, so as to correspondingly reduce the height and/or width of the impact head to reduce the impact resistance.

22. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 21, wherein the crank connecting rod is arranged at the rears of the upper impact gide element and the lower impact guide element to reduce the space occupied by the crank connecting rod, and only the rolling friction back-to-back groove structure is placed between the upper impact guide element and the lower impact guide element, thus reducing the height and volume of the guide mechanism, decreasing the height of the impact head, reducing the impact area and reducing the impact counterforce.

23. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8, wherein the back-to-back groove guide mechanilsm comprises more than one U-shaped guide frame and/or frame-shaped 49 guide frame and/or cylindrical guide frame, the lower impact guide element of an upper U-shaped guide frame is configured to be close to the upper impact guide element of a lower U-shaped guide frame, to reduce the combination height of the upper U-shaped guide frame and the lower U-shaped guide frame and reduce the impact resistance caused by excessive distance between the upper U-shaped guide frame and the lower U-shaped guide frame.

24. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8, wherein the guide rolling body comprises a roller, the roller comprises an outer wheel and a. roller shaft, and the outer wheel and the roller shaft are separately connected or of an integral structure.

25. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8, wherein the guide rolling body comprises a roller, the roller comprises an outer wheel and a roller shaft, a bearing or a bearing bush is arranged between the outer wheel and the roller shaft, and the bearing or the bearing bush is arranged at the two ends or the middle part of the roller shaft.

26. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8, wherein the anti-breakage mechanism is arranged at the joint of the power impact element and the toothholder or the impact guide element.

27. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 28., wherein the anti-breakage mechanism comprises a joint bearing, a steering connector, a rzeppa universal joint, a candan universal joint, a bulb buckling groove type or a cambered buckling groove type.

28. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8, wherein the driving mechanism comprises 50 a crank shaft driving mechanism or a hydraulic driving mechanism or a pneumatic driving mechanism.

29. The device for heightening and/or widening and righting the impact head by using the back-to-back groove of claim 8, wherein when upper and lower layers of impact heads are arranged, the part telescoping in the power box of the reciprocating travel of the impact guide element is circular, the part close to a main driving shaft of the impact guide element is concave, the main driving shaft penetrates through the concave segment of the impact guide element so as to be engaged with an auxiliary driving shaft, the main driving shaft drives the auxiliary driving shaft to rotate, the auxiliary driving shaft drives a connecting rod to impact in a reciprocating manner, the connecting rod drives the impact heads to impact in a reciprocating manner, and the main driving shaft and the auxiliary driving shaft are separately connected or are integrated. 51