Connecting structure of crank arm and hydraulic cylinder of hydraulic clay gun

Abstract

The invention provides a crank arm and hydraulic cylinder connecting structure of a hydraulic clay gun, and belongs to the technical field of blast furnace metallurgy ironmaking, the crank arm and hydraulic cylinder connecting structure comprises a butt joint seat rotatably arranged at the end of a crank arm, the side wall of the butt joint seat and the movable end of a hydraulic cylinder are fixedly connected with bases, and the side wall of each base is provided with a butt joint adjusting component; a butt joint adjusting component is arranged at the movable end of the hydraulic cylinder, bidirectional plug connectors are arranged at the movable end of the butt joint adjusting component, and the positions of the two bidirectional plug connectors are adjusted through the butt joint adjusting components on the two bases, so that the position difference is adjusted when the butt joint base is connected with the movable end of the hydraulic cylinder, and the accuracy of the connecting position of the two bidirectional plug connectors is guaranteed; the cylinder body part of the hydraulic cylinder is dragged through the two-way telescopic piece composed of the sleeve and the two traction columns, meanwhile, the stability of the sleeve is improved through the frame body composed of the elastic telescopic component and the supporting inner arm, and therefore the traction force of the cylinder body part of the hydraulic cylinder is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of blast furnace metallurgy ironmaking, and particularly to a connecting structure between a crank arm and a hydraulic cylinder of a hydraulic clay gun. Background Art

[0002] A hydraulic clay gun is an essential front-of-furnace equipment in the smelting industry, used to quickly and accurately block the taphole after tapping iron, enabling the blast furnace to quickly enter the next cycle of operation. Compared with mechanical clay guns, hydraulic clay guns have the characteristics of light weight, simple structure, stable operation, reliable performance, high efficiency, convenient operation, low price, etc., and are ideal front-of-furnace equipment for large, medium and small ironmaking plants. In the structure of the hydraulic clay gun, the hydraulic cylinder is connected to the two side plates of the crank arm through an oil cylinder cross beam; The crank arm needs to rotate continuously during normal operation, which results in relative movement between the oil cylinder cross beam and the side plate. During the relative movement, the connecting part is affected by wear. At this time, a copper sleeve is usually set between the two, and in order to avoid excessive wear of the copper sleeve, an oil injection joint is also set to lubricate regularly through the oil injection joint.

[0003] However, in the actual operation process, it is inevitable that there will be negligence and the situation of failure to lubricate regularly in a timely manner, which will cause wear and damage of the copper sleeve, and then cause the equipment to malfunction, affecting the production efficiency and continuity of the blast furnace.

[0004] A connecting structure between a crank arm and a hydraulic cylinder of a hydraulic clay gun is disclosed in the related technology (publication number: CN102839245A). The disclosed technical solution: compared with the prior art, the connecting structure between the crank arm and the hydraulic cylinder of the hydraulic clay gun uses a self-lubricating copper sleeve instead of a common copper sleeve. The self-lubricating copper sleeve is a combined part of copper-based material and graphite material. Graphite material is a good lubricating material. In this way, even if there is a phenomenon of lubricating oil cut-off, wear can be well avoided. It not only has a simple structure and is easy to implement, but also has a long service life and reliable operation.

[0005] In the above disclosed technical solution, it is found that there are the following problems in the related technology: The operation of the hydraulic clay gun requires powerful power to drive the movement of the crank arm to realize various actions of the clay gun, such as aligning the nozzle with the taphole, extruding the clay to block the taphole, etc. The hydraulic cylinder converts the pressure energy of the hydraulic oil into mechanical energy, providing a powerful thrust and pulling force for the crank arm, enabling it to overcome various resistances and complete the corresponding work tasks. Therefore, the stability of the position where the hydraulic cylinder is located directly affects the accuracy of the firing position of the clay gun. Once the position of the hydraulic cylinder is offset due to loosening of the connecting parts, resulting in the taphole not being accurately blocked, we propose a new connecting structure between the crank arm and the hydraulic cylinder of the hydraulic clay gun.

[0006] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background art section of the present application, and thus may include information on the prior art that is not known to those of ordinary skill in the art. Summary of the Invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies. To solve the problem of the firm connection between the hydraulic cylinder and the crank arm in the above prior art, the present invention provides a connection structure between the crank arm and the hydraulic cylinder of a hydraulic mud gun, which combines a connection component that is convenient for disassembly and assembly with a firm traction structure of the hydraulic cylinder body to achieve the effect of improving the firm connection between the hydraulic cylinder and the crank arm. The specific technical solution is as follows: A connection structure between the crank arm and the hydraulic cylinder of a hydraulic mud gun includes a docking seat rotatably provided at the end of the crank arm. Bases are fixedly connected to the side walls of both the docking seat and the movable end of the hydraulic cylinder. A docking adjustment member is provided on the side wall of the base, and a two-way plug-in member is provided at the movable end of the docking adjustment member; Traction columns are rotatably provided on the outer wall of the cylinder body of the hydraulic cylinder and on the side wall of the crank arm. A sleeve is connected to the side wall of the crank arm through an elastic telescopic member. The sleeve simultaneously sleevs outside both traction columns, and a linkage locking member for simultaneously locking the telescopic states of the two traction columns is provided on the outer wall of the sleeve; A support outer arm is rotatably provided on the base where the hydraulic cylinder is located. A support inner arm is rotatably connected to the outer wall of the elastic telescopic member. The support outer arm sleevs outside the support inner arm, and a point-by-point self-locking member is provided between the inner cavity of the support inner arm and the support outer arm.

[0008] In the above technical solution, the docking adjustment member includes a groove opened on the base. A lead screw is rotatably provided in the inner cavity of the groove. An alignment adjustment seat fixedly connected to the two-way plug-in member is threadedly connected to the outer wall of the lead screw. A deviation-preventing guide rod parallel to the lead screw is embedded in the inner cavity of the groove, and a deviation-preventing guide seat fixedly connected to the two-way plug-in member is sleeved on the outer wall of the deviation-preventing guide rod.

[0009] The two-way plug-in member includes an outer frame fixedly connected to the alignment adjustment seat and the deviation-preventing guide seat. A plug-in lock shell is slidably provided on the inner wall of the outer frame. A reset locking member is provided on the plug-in lock shell, and a feed docking assembly for adjusting the extending position of the reset locking member is provided inside the outer frame.

[0010] The reset locking component includes a semicircular groove provided inside the plug-in lock shell, the inner wall of the semicircular groove is rotatably provided with a semicircular lock core, the circumferential outer wall of the semicircular lock core is fixedly connected with an unlocking rod extending out of the plug-in lock shell, the outer wall of the plug-in lock shell is fixedly connected with a plug-in pushing cone connected to the semicircular groove, the outer wall of the unlocking rod is rotatably connected with an outer rod located in the inner cavity of the plug-in lock shell, the inner wall of the plug-in lock shell is rotatably connected with an inner rod, and the outer rod is sleeved on the outside of the inner rod, and the outer wall of the inner rod is sleeved with a first elastic member.

[0011] The outer wall of the plug-in lock shell is provided with a clearance groove, and the unlocking rod extends out of the outside of the plug-in lock shell after passing through the clearance groove. The outer wall of the plug-in lock shell is fixedly connected with a locking rod, and the end of the unlocking rod outside the plug-in lock shell is fixedly connected with a sleeve, and the sleeve is sleeved on the outside of the locking rod by a through groove running through the inner cavity, and the outer wall of the locking rod is threadedly connected with a locking seat that rests on the sleeve.

[0012] The feed docking assembly includes an outer cylinder rotatably arranged in the inner cavity of the outer frame, a stud is threadedly connected to the end of the outer cylinder, a spherical part is fixedly connected to the end of the stud, an outer cover sleeved on the outside of the spherical part is fixedly connected to the side wall of the plug-in lock housing, a driven gear is sleeved on the outer wall of the outer cylinder, and a driving gear meshing with the driven gear is rotatably arranged on the outer wall of the outer frame.

[0013] The linkage locking member comprises a trapezoidal seat fixedly connected to the outer wall of the sleeve, and push bars are slidably arranged on the inclined surfaces on both sides of the trapezoidal seat, and the ends of the push bars close to the traction column are symmetrically fixedly connected to the base column, and the outer wall of the base column is sleeved with a clamping column, and the clamping column and the base column are connected by a second elastic member; A locking disk extending into the inner cavity of the sleeve is symmetrically rotatably arranged on the outer wall of the sleeve, and two groups of teeth plugged into the clamping column are evenly arranged on the outer wall of the locking disk in the circumferential direction, and the tooth grooves of the two groups of circumferential teeth are staggered, and the outer wall of the traction column is evenly longitudinally provided with tooth grooves meshing with the teeth, and a locking driving component for driving two propulsion bars to displace in the same direction at the same time is arranged on the outer wall of the trapezoidal seat.

[0014] The locking drive component includes two meshing adjustment gears rotatably arranged on the side wall of the trapezoidal seat, and a propulsion gear and a driving gear respectively meshing with the two adjustment gears are rotatably arranged on the side wall of the trapezoidal seat, and racks respectively meshing with the propulsion gear and the driving gear are arranged on the side walls of the two propulsion bars.

[0015] The point-by-point self-locking component includes a double-headed elastic piece fixedly connected to the bottom end of the inner support arm. The inner wall of the outer support arm is longitudinally and uniformly provided with spherical card slots, and spherical card members that are engaged with the spherical card slots are fixedly installed at both ends of the double-headed elastic piece.

[0016] The elastic telescopic component includes an outer support cylinder rotatably arranged on the curved arm. An inner support rod is rotatably arranged on the outer wall of the sleeve, and the outer support cylinder is sleeved outside the inner support rod. A third elastic member located between the sleeve and the outer support cylinder is sleeved on the outer wall of the inner support rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: The connection structure between the curved arm and the hydraulic cylinder of this hydraulic clay gun: First, the position of the two double-sided plug connectors is adjusted through the docking adjustment components on the two bases, so as to adjust the position difference that appears when the docking seat is connected to the movable end of the hydraulic cylinder, ensuring the accuracy of the connection position of the two double-sided plug connectors, thus bringing convenience to the operation during the installation process of the hydraulic cylinder.

[0018] Second, during the process of the movable end of the hydraulic cylinder telescoping and moving to adjust the angle of the curved arm, the cylinder body part of the hydraulic cylinder is pulled by the double-sided telescopic member composed of the sleeve and the two traction columns. At the same time, the stability of the sleeve is improved through the frame body composed of the elastic telescopic component and the inner support arm, thereby increasing the traction force of the cylinder body part of the hydraulic cylinder.

[0019] Third, after the movable end of the hydraulic cylinder drives the curved arm to be adjusted to the accurate angle, the position is locked through the point-by-point self-locking component between the inner support arm and the outer support arm. The stability of the position where the hydraulic cylinder is located is improved through the formed frame body, thereby increasing the stability of the hydraulic cylinder and playing a protective effect on the hydraulic cylinder.

[0020] Fourth, when the distance is not sufficient to ensure the connection between the hydraulic cylinder and the docking seat, the position of the plugging lock shell is adjusted through the feeding docking component. As the two plugging lock shells move relative to each other on the inner walls of the two outer frames, and then are connected through the reset locking component, when the hydraulic cylinder is connected to the curved arm, the errors that appear can be eliminated in time, thus bringing convenience to the operation process of relevant personnel.

[0021] Fifth, when connecting the movable end of the hydraulic cylinder to the docking seat, the two plugging lock shells are respectively pushed to move relative to each other through the feeding docking component on the outer frame. After the plugging push cone slides into the plugging lock shell, the semi-circular lock core is pushed to rotate by the inclined surface of the cone. When the two semi-circular lock cores are in contact with each other, at this time, using the elastic force of the first elastic member, the two semi-circular lock cores are rotated back to their original positions, thereby connecting the two plugging lock shells. When unlocking is required, the unlocking rods on each plugging lock shell are pulled respectively, and then the two plugging lock shells are moved towards each other to separate the hydraulic cylinder from the curved arm.

[0022] 6. After the two plug-in lock shells are relatively plugged in, the locking seat is twisted on the outer wall of the locking rod to lock the position of the unlocking rod to avoid accidentally touching the unlocking rod, thereby ensuring the stability of the hydraulic cylinder and the crank arm after docking.

[0023] 7. Since the two retractable and elastic clamping columns can be retracted and deformed, one of the clamping columns is clamped on one group of tooth grooves, and the other clamping column is clamped on the teeth as it is compressed. Through the staggered teeth and two retractable clamping columns, the position of the traction column can be further locked, reducing the error of the locking process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure after installation of a connecting structure of a crank arm and a hydraulic cylinder of a hydraulic mud gun of the present invention; Figure 2 It is a structural schematic diagram of a connecting structure between a crank arm and a hydraulic cylinder of a hydraulic mud gun of the present invention; Figure 3 It is a structural schematic diagram of the docking adjustment component and the bidirectional connector of the present invention; Figure 4 It is a schematic diagram of the structure explosion of the bidirectional connector part of the present invention; Figure 5 It is a structural schematic diagram of the bidirectional connector of the present invention when it is docked; Figure 6 It is a structural schematic diagram of the sleeve and the linkage locking component of the present invention; Figure 7 It is a schematic diagram of the structure explosion of the sleeve and the linkage locking component of the present invention; Figure 8 It is a schematic diagram of the structure explosion of the point-by-point self-locking component part of the present invention; Figure 9 for Figure 2 A local enlarged view of point A; Figure 10 for Figure 4 A partial enlarged view of point B; Figure 11 for Figure 4 A partial enlarged view of point C; Figure 12 for Figure 7 A partial enlarged view of point D; Figure 13 for Figure 7 A local enlarged view of point E; in, Figures 1 to 13The corresponding relationship between the reference numerals in the drawings and the component names is as follows: 1 - crank arm, 2 - hydraulic cylinder, 3 - base, 4 - docking seat, 5 - docking adjustment member, 51 - groove, 52 - lead screw, 53 - anti-deviation guide rod, 54 - alignment adjustment seat, 55 - anti-deviation seat, 6 - two-way plug-in member, 61 - outer frame, 62 - plug-in lock housing, 63 - reset locking member, 631 - semi-circular groove, 632 - semi-circular lock core, 633 - unlocking rod, 634 - notch, 635 - plug-in pushing cone, 636 - outer rod, 637 - inner rod, 638 - first elastic member, 64 - feeding docking assembly, 641 - outer cylinder, 642 - driven gear, 643 - sliding column, 644 - sliding groove, 645 - spherical member, 646 - stud, 647 - driving gear, 648 - sector cover, 649 - outer cover, 650 - through hole, 7 - point-by-point self-locking member, 71 - double-headed elastic piece, 72 - spherical card slot, 73 - spherical card member, 8 - locking drive member, 81 - steering gear, 82 - propulsion gear, 83 - driving gear, 84 - rack, 9 - linkage locking member, 91 - trapezoidal seat, 92 - propulsion bar, 93 - base column, 94 - clamping column, 95 - second elastic member, 96 - locking disc, 97 - tooth, 98 - tooth socket, 99 - protective cover, 910 - perforation, 911 - slot hole, 912 - guide groove, 913 - guide block, 10 - traction column, 11 - sleeve, 12 - elastic telescopic member, 13 - supporting outer arm, 14 - supporting inner arm, 15 - third elastic member, 16 - relief groove, 17 - locking rod, 18 - socket, 19 - locking seat, 20 - through slot, 21 - inner support rod, 22 - outer support cylinder. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0026] Next, in combination with specific implementation cases and attached Figure 1 - attached Figure 13 The present invention will be further described, but the present invention is not limited to these embodiments.

[0027] A connection structure between the crank arm and the hydraulic cylinder of a hydraulic mud gun includes a docking seat 4 rotatably provided at the end of the crank arm 1. One end of the crank arm 1 of the hydraulic mud gun longitudinally rotates on the pedestal of the hydraulic mud gun. Bearings are embedded and installed on the inner walls on both sides of the other end of the crank arm 1. Both ends of the shaft body are embedded and installed inside the two bearings. The docking seat 4 is fixedly sleeved on the outer wall of the shaft body through an installation hole opened through the inner cavity, so that the docking seat 4 is hinged to the end of the crank arm 1. Bases 3 are fixedly connected to the side wall of the docking seat 4 and the movable end of the hydraulic cylinder 2.

[0028] The end of the cylinder block of the hydraulic cylinder 2 is hinged to the pedestal of the hydraulic mud gun. By connecting the movable end of the hydraulic cylinder 2 to the docking seat 4, the movable end of the hydraulic cylinder 2 extends and moves to adjust the angle of the toggle arm 1, which is adjusted according to the firing position of the hydraulic mud gun to ensure the accuracy of the treatment of the tapping hole. A docking adjustment member 5 is provided on the side wall of the pedestal 3. A two-way plug-in member 6 is provided at the movable end of the docking adjustment member 5. The pedestal 3 is fixedly installed at the movable end of the hydraulic cylinder 2, and the pedestal 3 is also fixedly installed at the free end of the docking seat 4.

[0029] With the above structure, the positions of the two two-way plug-in members 6 are adjusted by the docking adjustment members 5 on the two pedestals 3, so that when the docking seat 4 is connected to the movable end of the hydraulic cylinder 2, the position difference that appears is adjusted, ensuring the accuracy of the connection positions of the two two-way plug-in members 6, thus bringing convenience to the operation during the installation process of the hydraulic cylinder 2.

[0030] Traction columns 10 are rotatably provided on the outer wall of the cylinder block of the hydraulic cylinder 2 and on the side wall of the toggle arm 1. On the outer wall of the cylinder block of the hydraulic cylinder 2 and on the side wall of the toggle arm 1, rotating shafts are installed through brackets, so that the two traction columns 10 are respectively hinged to the toggle arm 1 and the cylinder block of the hydraulic cylinder 2. The side wall of the toggle arm 1 is connected with a sleeve 11 through an elastic telescopic member 12. The sleeve 11 is simultaneously sleeved outside the two traction columns 10, and a linkage locking member 9 for simultaneously locking the extended lengths of the two traction columns 10 is provided on the outer wall of the sleeve 11.

[0031] The sleeve 11 is a cylindrical structure with a through inner cavity. One ends of the two traction columns 10 are respectively hinged to the outer wall of the cylinder block of the hydraulic cylinder 2 and the toggle arm 1. The other ends of the two traction columns 10 both extend into the interior of the sleeve 11, so that the two traction columns 10 slide on the inner wall of the sleeve 11 by fitting from both ends. The sleeve 11 and the two traction columns 10 form a two-way telescopic member, and at the same time, the sleeve 11 and the toggle arm 1 are respectively hinged to both ends of the elastic telescopic member 12.

[0032] A support outer arm 13 is rotatably provided on the base where the hydraulic cylinder 2 is located. A support inner arm 14 is rotatably connected to the outer wall of the elastic telescopic member 12. The support outer arm 13 is sleeved outside the support inner arm 14, and a point-by-point self-locking member 7 is provided between the inner cavity of the support inner arm 14 and the support outer arm 13.

[0033] One end of the supporting outer arm 13 is sleeved on the outer wall of the shaft body through a connecting piece. The shaft body rotates on the pedestal where the hydraulic cylinder 2 is located, so that one end of the supporting outer arm 13 rotates on the pedestal where the hydraulic cylinder 2 is located. The other end of the supporting outer arm 13 is sleeved outside one end of the supporting inner arm 14. The other end of the supporting inner arm 14 is sleeved on the outside of the shaft body through a connecting piece. The shaft body rotates on the outer wall of the outer supporting cylinder 22 through a bracket. Thus, both ends of the telescopic member formed by the supporting inner arm 14 and the supporting outer arm 13 are hinged to the outer supporting cylinder 22 and the pedestal where the hydraulic cylinder 2 is located respectively. During the process of the supporting inner arm 14 telescoping and sliding inside the inner wall of the supporting outer arm 13, it is gradually self-locked through the point-by-point self-locking member 7.

[0034] With the above structure, during the process of the movable end of the hydraulic cylinder 2 telescoping and moving to adjust the angle of the crank arm 1, the cylinder body part of the hydraulic cylinder 2 is pulled by the bidirectional telescopic member formed by the sleeve 11 and the two traction columns 10. At the same time, the stability of the sleeve 11 is improved through the frame body formed by the elastic telescopic member 12 and the supporting inner arm 14, thereby increasing the traction force of the cylinder body part of the hydraulic cylinder 2.

[0035] After the movable end of the hydraulic cylinder 2 drives the crank arm 1 to be adjusted to the accurate angle, it is locked at this position through the point-by-point self-locking member 7 between the supporting inner arm 14 and the supporting outer arm 13. The stability of the position where the hydraulic cylinder 2 is located is improved through the formed frame body, and further the stability of the hydraulic cylinder 2 is increased, playing a protective effect on the hydraulic cylinder 2.

[0036] Among them, the docking adjustment member 5 includes a groove 51 opened on the base 3. A lead screw 52 is rotatably arranged in the inner cavity of the groove 51. An alignment adjustment seat 54 fixedly connected to the bidirectional plug-in member 6 is threadedly connected to the outer wall of the lead screw 52. An anti-deviation guide rod 53 parallel to the lead screw 52 is embedded in the inner cavity of the groove 51. An anti-deviation guide seat 55 fixedly connected to the bidirectional plug-in member 6 is sleeved on the outer wall of the anti-deviation guide rod 53. The groove 51 is opened along the center position in the radial direction of the base 3. Bearings are embedded and installed on the inner walls on both sides of the groove 51. Both ends of the lead screw 52 are respectively embedded and installed inside the two bearings, and both ends of the lead screw 52 respectively extend out of the base 3. The lead screw 52 is operated through the part extending out of the base 3.

[0037] The anti-deviation guide rod 53 is fixedly embedded and installed on the inner wall of the groove 51, so that the anti-deviation guide rod 53 and the lead screw 52 are in parallel positions. The alignment adjustment seat 54 is connected to the lead screw 52 through a threaded through hole opened in the inner cavity. The anti-deviation guide seat 55 is movably sleeved on the outer part of the anti-deviation guide rod 53 through a through hole opened in the inner cavity.

[0038] With the above mechanism, when adjusting the position of the two-way connector 6, the alignment adjustment seat 54 is driven to move the two-way connector 6 by rotating the lead screw 52. At the same time, the two-way connector 6 drives the anti-deviation guide seat 55 to slide along the outer wall of the anti-deviation guide rod 53, avoiding the position deviation of the two-way connector 6, thereby ensuring the accuracy of the adjusted position.

[0039] It should be noted that the two-way connector 6 includes an outer frame 61 fixedly connected to the alignment adjustment seat 54 and the anti-deviation guide seat 55. A plug-in lock housing 62 is slidably arranged on the inner wall of the outer frame 61. The plug-in lock housing 62 fits and slides on the inner wall of the outer frame 61. Sliding columns 643 are perpendicularly and fixedly installed on the surfaces on both sides of the plug-in lock housing 62. Chutes 644 extending into the inner cavity are opened on the surfaces on both sides of the outer frame 61, so that during the process of the plug-in lock housing 62 sliding on the inner wall of the outer frame 61, the plug-in lock housing 62 drives the sliding columns 643 to fit and slide on the inner walls of the chutes 644. The sliding fit between the sliding columns 643 and the chutes 644 ensures the stability of the moving direction of the plug-in lock housing 62.

[0040] A reset locking member 63 is arranged on the plug-in lock housing 62, and a feed docking assembly 64 for adjusting the extending position of the reset locking member 63 is arranged inside the outer frame 61. The extending length of the plug-in lock housing 62 is adjusted by the feed docking assembly 64.

[0041] With the above structure, when the two two-way connectors 6 are connected, when the distance is not sufficient to ensure the connection between the hydraulic cylinder 2 and the docking seat 4, the position of the plug-in lock housing 62 is adjusted by the feed docking assembly 64. As the two plug-in lock housings 62 move relative to each other on the inner walls of the two outer frames 61, and then are connected by the reset locking member 63, when the hydraulic cylinder 2 is connected to the crank arm 1, the errors that occur can be eliminated in time, thus bringing convenience to the operation process of relevant personnel.

[0042] In addition, the reset locking member 63 includes a semi-circular groove 631 opened inside the plug-in lock housing 62. A semi-circular lock core 632 is rotatably arranged in a fitting manner on the inner wall of the semi-circular groove 631. An unlocking rod 633 extending outside the plug-in lock housing 62 is fixedly connected to the circumferential outer wall of the semi-circular lock core 632. A plug-in pushing cone 635 connected to the semi-circular groove 631 is fixedly connected to the outer wall of the plug-in lock housing 62. The plug-in pushing cone 635 is fixed on the side of the plug-in lock housing 62 away from the base 3. A semi-circular groove 631 is opened on the surface of the plug-in pushing cone 635 extending into the plug-in lock housing 62. The semi-circular lock core 632 is inclined and fitted on the inner wall of the semi-circular groove 631 by the elastic force of the first elastic member 638.

[0043] The outer wall of the unlocking rod 633 is rotatably connected to an outer rod 636 located in the inner cavity of the plug-in lock housing 62, and the inner wall of the plug-in lock housing 62 is rotatably connected to an inner rod 637, and the outer rod 636 is sleeved on the outside of the inner rod 637, and the outer wall of the inner rod 637 is sleeved with a first elastic member 638. The outer rod 636 fits on the outer wall of the inner rod 637 to telescopically slide, and the first elastic member 638 can compress the spring, and the two ends of the first elastic member 638 are respectively fixed to the end of the outer rod 636 and the inner wall of the plug-in lock housing 62, and the first elastic member 638 fits on the outer wall of the inner rod 637 to telescopically slide. The structure formed by the inner rod 637, the outer rod 636 and the first elastic member 638 exerts a force on the unlocking rod 633, so that the unlocking rod 633 slides on the inner wall of the semicircular groove 631, and a notch 634 is opened on the outer wall of the semicircular groove 631 for the movable space of the unlocking rod 633, so that the outer wall of the unlocking rod 633 fits on the inner wall on one side of the notch 634 and extends to the outside of the make way slot 16 to extend out of the plug-in lock shell 62.

[0044] By adopting the above structure, when the movable end of the hydraulic cylinder 2 is connected to the docking seat 4, after the two two-way connectors 6 are adjusted to the alignment position, the two plug-in lock shells 62 are pushed to move relative to each other through the feed docking components 64 on the outer frame 61, so that the plug-in pushing cones 635 on the two two-way connectors 6 slide into each other's interior in a fit, and after the plug-in pushing cone 635 slides into the interior of the plug-in lock shell 62, the semicircular lock core 632 is pushed to rotate through the conical inclined surface. At this time, the unlocking rod 633 stretches the outer rod 636 and the inner rod 637 through the force of the semicircular lock core 632, so that the first elastic member 638 generates elastic force. When the two semicircular lock cores 632 fit together, the elastic force of the first elastic member 638 is used to reset and rotate the two semicircular lock cores 632, thereby connecting the two plug-in lock shells 62.

[0045] When unlocking is required, the unlocking rods 633 on each plug-in lock housing 62 are pulled respectively, and then the two plug-in lock housings 62 are moved toward each other to separate the movable end of the hydraulic cylinder 2 from the crank arm 1.

[0046] In addition, a relief groove 16 is formed in the outer wall of the plug-in lock housing 62. The unlocking rod 633 extends out of the plug-in lock housing 62 after passing through the relief groove 16. A locking rod 17 is fixedly connected to the outer wall of the plug-in lock housing 62. A socket 18 is fixedly connected to the end of the unlocking rod 633 located outside the plug-in lock housing 62. The socket 18 is sleeved on the outside of the locking rod 17 through a through groove 20 formed in the inner cavity. A locking seat 19 that abuts against the socket 18 is threadedly connected to the outer wall of the locking rod 17. The socket 18 is fixedly installed at the end of the unlocking rod 633 located outside the plug-in lock housing 62, and a through groove 20 with sufficient space is formed in the inner cavity of the socket 18, so that the socket 18 can move on the outside of the locking rod 17 through the through groove 20. Due to the limitation of the semicircular lock core 632 by the notch 634 and the fixed connection between the unlocking rod 633 and the semicircular lock core 632, the unlocking rod 633 is limited in the initial position along with the semicircular lock core 632. The part of the locking rod 17 passing through the outside of the socket 18 is provided with an external thread.

[0047] With the above structure, after the two plug-in lock housings 62 are inserted into each other, the locking seat 19 is screwed on the outer wall of the locking rod 17 to lock the position of the unlocking rod 633, preventing accidental contact with the unlocking rod 633, thereby ensuring the stability after the hydraulic cylinder 2 is docked with the crank arm 1.

[0048] Furthermore, the feeding and docking assembly 64 includes an outer cylinder 641 rotatably arranged in the inner cavity of the outer frame 61. A stud 646 is threadedly connected to the end of the outer cylinder 641. The outer cylinder 641 rotates on the inner wall of the outer frame 61 through a bearing. A threaded hole is formed on the other side of the outer cylinder 641, so that the stud 646 is connected to the outer cylinder 641. A spherical member 645 is fixedly connected to the end of the stud 646. An outer cover 649 sleeved on the outside of the spherical member 645 is fixedly connected to the side wall of the plug-in lock housing 62. The spherical member 645 rotates inside the outer cover 649.

[0049] A driven gear 642 is sleeved on the outer wall of the outer cylinder 641. A driving gear 647 meshing with the driven gear 642 is rotatably arranged on the outer wall of the outer frame 61. A through hole 650 is formed on the side wall of the outer frame 61. The through hole 650 is covered by a sector-shaped cover 648. The driving gear 647 rotates on the inner wall of the sector-shaped cover 648 through a central shaft. The central shaft of the driving gear 647 extends out of the sector-shaped cover 648. The driven gear 642 is fixedly sleeved on the outer wall of the outer cylinder 641 through a central mounting hole. The driving gear 647 passes through the through hole 650 and meshes with the driven gear 642.

[0050] With the above structure, when adjusting the position of the plugging and pushing cone 635 to drive the docking of the two plugging lock housings 62, rotate the central shaft extending outside the fan-shaped cover 648, so that the driving gear 647 drives the driven gear 642 to rotate, so that the outer cylinder 641 rotates, so that the stud 646 threadedly connected to the outer cylinder 641 drives the spherical member 645 to rotate and move, so that the outer cover 649 drives the plugging lock housing 62 to move.

[0051] The linkage locking member 9 includes a trapezoidal seat 91 fixedly connected to the outer wall of the sleeve 11. The trapezoidal seat 91 is obliquely fixed on the outer wall of the sleeve 11, and push bars 92 are slidably arranged on both inclined surfaces of the trapezoidal seat 91. The inclined surface of the trapezoidal seat 91 is an uphill inclined surface from right to left. A T-shaped guide groove 912 is formed in the inclined surface of the trapezoidal seat 91, and a T-shaped guide block 913 is fixedly installed at the bottom of the push bar 92, so that the push bar 92 is attached to the inclined surface of the trapezoidal seat 91 and slides through the sliding fit of the guide block 913 and the guide groove 912.

[0052] Base columns 93 are symmetrically fixedly connected to the end of the push bar 92 close to the traction column 10. A clamping column 94 is sleeved on the outer wall of the base column 93, and the clamping column 94 is connected to the base column 93 through a second elastic member 95. The clamping column 94 fits and slides telescopically on the outer wall of the base column 93. The second elastic member 95 can be a compression spring, so that both ends of the second elastic member 95 are respectively fixed to the inner wall of the clamping column 94 and the end of the base column 93; Locking disks 96 extending into the inner cavity of the sleeve 11 are symmetrically rotatably arranged on the outer wall of the sleeve 11, and two groups of teeth 97 inserted with the clamping columns 94 are evenly arranged in the circumferential direction on the outer wall of the locking disks 96. The tooth grooves of the two groups of circumferential teeth 97 are staggered. Two protective covers 99 are symmetrically and fixedly installed on the upper and lower outer walls of the sleeve 11. Slot holes 911 extending into the inner cavity of the sleeve 11 are formed at the positions where the two protective covers 99 cover the outer wall of the sleeve 11. The locking disks 96 are rotatably installed through central axes inside each protective cover 99. The locking disks 96 are fixedly sleeved on the outer wall of the central axis through mounting holes formed in the center, and the central axis rotates inside the protective cover 99. Two groups of side-by-side teeth 97 are formed on the outer circumferential wall of each locking disk 96, and the two transverse teeth 97 at the same position are in a staggered position, that is, the teeth 97 and the tooth grooves are in a side-by-side transverse position.

[0053] The outer wall of the traction column 10 is longitudinally and evenly provided with tooth grooves 98 that mesh with the teeth 97. Two rows of staggered pressing grooves 98 are provided on the outer wall of the sleeve 11, so that the two rows of tooth grooves 98 mesh with two groups of circumferential teeth 97 at the same time. A locking drive member 8 for driving the two push bars 92 to displace in the same direction at the same time is provided on the outer wall of the trapezoidal seat 91. After the hydraulic cylinder 2 drives the crank arm 1 to be adjusted to the accurate position, the locking drive member 8 drives the two push bars 92 to move along the inclined surfaces of the two trapezoidal seats 91 towards the shield 99, so that the clamping columns 94 pass through the through holes 910 on the shield 99 and simultaneously touch the teeth 97 of the locking disc 96.

[0054] With the above structure, the two telescopic and elastic clamping columns 94 can be telescoped and deformed, so that one clamping column 94 is clamped on one group of tooth grooves, and the other clamping column 94 is clamped on the teeth 97 with compression. Through the staggered teeth 97 and the two telescopic clamping columns 94, the position of the traction column 10 can be further locked, reducing the error in the locking process, and thus ensuring the stability of the position where the hydraulic cylinder 2 is located.

[0055] The locking drive member 8 includes two meshing direction-adjusting gears 81 rotatably provided on the side wall of the trapezoidal seat 91. A push gear 82 and a drive gear 83 that are respectively meshed with the two direction-adjusting gears 81 are rotatably provided on the side wall of the trapezoidal seat 91, and racks 84 that are respectively meshed with the push gear 82 and the drive gear 83 are provided on the side walls of the two push bars 92. The two direction-adjusting gears 81 and the push gear 82 are rotated on the trapezoidal seat 91 through the central shafts, and the drive gear 83 is fixedly sleeved on the outer wall of the output shaft of the motor through the mounting hole opened in the center. The motor is electrically connected to an external power supply through a wire.

[0056] The two direction-adjusting gears 81 are located between the push gear 82 and the drive gear 83. The drive gear 83 meshes with one of the direction-adjusting gears 81, this direction-adjusting gear 81 meshes with the other direction-adjusting gear 81, and the other direction-adjusting gear 81 meshes with the push gear 82. Racks 84 are fixedly installed on the side walls of the two push bars 92 and near the lower ends, so that the two racks 84 are respectively meshed with the drive gear 83 and the push gear 82 on both sides of the trapezoidal seat 91. The two push bars 92 slide along the inclined surfaces of the trapezoidal seat 91 at the same time through the four sequentially meshing gears.

[0057] The point-by-point self-locking component 7 includes a double-headed elastic piece 71 fixedly connected to the bottom end of the support inner arm 14. Spherical card slots 72 are longitudinally and evenly formed on the inner wall of the support outer arm 13. Spherical fasteners 73 engaged with the spherical card slots 72 are fixedly installed at both ends of the double-headed elastic piece 71. During the process of the hydraulic cylinder 2 adjusting the angle of the crank arm 1, with the displacement of each part, the support inner arm 14 drives the double-headed elastic piece 71 to move inside the support outer arm 13, so that both ends of the double-headed elastic piece 71 drive the spherical fasteners 73 to slide through the spherical card slots 72 in sequence.

[0058] With the above structure, after the angle of the crank arm 1 is adjusted, the double-headed elastic piece 71 drives the two spherical fasteners 73 to be embedded inside the corresponding spherical card slots 72, thereby locking the position of the support inner arm 14. Through the self-locking at each position, the various frame parts are stably supported, and thus the stability between the hydraulic cylinder 2 and the crank arm is ensured.

[0059] The elastic telescopic component 12 includes an outer support cylinder 22 rotatably arranged on the crank arm 1. An inner support rod 21 is rotatably arranged on the outer wall of the sleeve 11. The outer support cylinder 22 is sleeved outside the inner support rod 21, and a third elastic member 15 located between the sleeve 11 and the outer support cylinder 22 is sleeved on the outer wall of the inner support rod 21. The outer support cylinder 22 and the inner support rod 21 form a telescopic component. The third elastic member 15 can be a compression spring, and both ends of the third elastic member 15 are respectively fixed on the outer walls of the outer support cylinder 22 and the sleeve 11.

[0060] The working principle of the connection structure between the crank arm and the hydraulic cylinder of a hydraulic mud gun in this embodiment is as follows: When connecting the movable end of the hydraulic cylinder 2 with the docking seat 4, by rotating the lead screw 52, the alignment adjustment seat 54 drives the double-way plug-in member 6 to move, and the two double-way plug-in members 6 are adjusted to be on the same straight line.

[0061] Then rotate the central shaft extending outside the sector-shaped cover 648, so that the driving gear 647 drives the driven gear 642 to rotate, so that the outer cylinder 641 rotates, so that the stud 646 threadedly connected to the outer cylinder 641 drives the spherical member 645 to rotate and move, so that the outer cover 649 drives the plug-in lock housing 62 to move, and the plug-in push cones 635 on the two double-way plug-in members 6 slide into each other's interiors in a fitting manner.

[0062] After the plug-in push cone 635 slides into the plug-in lock housing 62, the conical inclined surface pushes the semi-circular lock core 632 to rotate. At this time, the unlocking rod 633 causes the outer rod 636 and the inner rod 637 to be stretched apart by the acting force of the semi-circular lock core 632, so that the first elastic member 638 generates an elastic force. When the two semi-circular lock cores 632 are in contact with each other, at this time, by using the elastic force of the first elastic member 638, the two semi-circular lock cores 632 are reset to rotate, thereby connecting the two plug-in lock housings 62.

[0063] After the two plug-in lock housings 62 are plugged together, the locking seat 19 is screwed on the outer wall of the locking rod 17 to lock the position of the unlocking rod 633 and prevent accidental contact with the unlocking rod 633.

[0064] When unlocking is required, the unlocking rods 633 on the respective plug-in lock housings 62 are pulled respectively, and then the two plug-in lock housings 62 are moved towards each other to separate the movable end of the hydraulic cylinder 2 from the crank arm 1.

[0065] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0066] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0067] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "set", "connected", "fixed", "swivelly connected", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connecting structure between a crank arm and a hydraulic cylinder of a hydraulic mud gun, characterized in that: It comprises a docking seat (4) rotatably arranged at the end of the crank arm (1), the side wall of the docking seat (4) and the movable end of the hydraulic cylinder (2) are both fixedly connected to a base (3), the side wall of the base (3) is provided with a docking adjustment component (5), and the movable end of the docking adjustment component (5) is provided with a two-way plug-in connector (6); A traction column (10) is rotatably provided on the outer wall of the cylinder body of the hydraulic cylinder (2) and on the side wall of the crank arm (1); the side wall of the crank arm (1) is connected to a sleeve (11) via an elastic telescopic member (12); the sleeve (11) is simultaneously sleeved on the outside of the two traction columns (10); and a linkage locking member (9) for simultaneously locking the two traction columns (10) in a telescopic state is provided on the outer wall of the sleeve (11); An outer support arm (13) is rotatably provided on the base on which the hydraulic cylinder (2) is located, and an inner support arm (14) is rotatably connected to the outer wall of the elastic telescopic member (12); the outer support arm (13) is sleeved on the outside of the inner support arm (14), and a point-by-point self-locking member (7) is provided between the inner cavities of the inner support arm (14) and the outer support arm (13).

2. The connecting structure of the crank arm and the hydraulic cylinder of a hydraulic mud gun according to claim 1, characterized in that: The docking adjustment component (5) comprises a groove (51) formed on the base (3); a lead screw (52) is rotatably arranged in the inner cavity of the groove (51); an outer wall of the lead screw (52) is threadedly connected to an alignment adjustment seat (54) fixedly connected to the bidirectional connector (6); an anti-deflection guide rod (53) parallel to the lead screw (52) is embedded in the inner cavity of the groove (51); and an anti-deflection guide seat (55) fixedly connected to the bidirectional connector (6) is sleeved on the outer wall of the anti-deflection guide rod (53).

3. The connecting structure of the crank arm and the hydraulic cylinder of a hydraulic mud gun according to claim 2, characterized in that: The bidirectional connector (6) comprises an outer frame (61) fixedly connected to the alignment adjustment seat (54) and the anti-deflection guide seat (55); a plug-in lock housing (62) is slidably provided on the inner wall of the outer frame (61); a reset locking member (63) is provided on the plug-in lock housing (62); and a feed docking assembly (64) for adjusting an extended position of the reset locking member (63) is provided inside the outer frame (61).

4. The connecting structure of the crank arm and the hydraulic cylinder of a hydraulic mud gun according to claim 3 is characterized in that: The reset locking member (63) comprises a semicircular groove (631) provided inside the plug-in lock housing (62); a semicircular lock core (632) is rotatably arranged on the inner wall of the semicircular groove (631); an unlocking rod (633) extending out of the plug-in lock housing (62) is fixedly connected to the circumferential outer wall of the semicircular lock core (632); a plug-in pushing cone (635) connected to the semicircular groove (631) is fixedly connected to the outer wall of the plug-in lock housing (62); an outer rod (636) located in the inner cavity of the plug-in lock housing (62) is rotatably connected to the outer wall of the unlocking rod (633); an inner rod (637) is rotatably connected to the inner wall of the plug-in lock housing (62); the outer rod (636) is sleeved on the outside of the inner rod (637); and a first elastic member (638) is sleeved on the outer wall of the inner rod (637).

5. The connecting structure of the crank arm and the hydraulic cylinder of a hydraulic mud gun according to claim 4, characterized in that: The outer wall of the plug-in lock housing (62) is provided with a clearance groove (16), and the unlocking rod (633) extends out of the plug-in lock housing (62) after passing through the clearance groove (16). The outer wall of the plug-in lock housing (62) is fixedly connected with a locking rod (17), and the end of the unlocking rod (633) located outside the plug-in lock housing (62) is fixedly connected with a sleeve (18), and the sleeve (18) is sleeved on the outside of the locking rod (17) by means of a through groove (20) penetrating the inner cavity, and the outer wall of the locking rod (17) is threadedly connected with a locking seat (19) that abuts against the sleeve (18).

6. The connecting structure of the crank arm and the hydraulic cylinder of a hydraulic mud gun according to claim 3, characterized in that: The feed docking assembly (64) comprises an outer cylinder (641) rotatably arranged in the inner cavity of the outer frame (61), a stud (646) being threadedly connected to the end of the outer cylinder (641), a spherical member (645) being fixedly connected to the end of the stud (646), an outer cover (649) being sleeved on the outside of the spherical member (645) being fixedly connected to the side wall of the plug-in lock housing (62), a driven gear (642) being sleeved on the outer wall of the outer cylinder (641), and a driving gear (647) being rotatably arranged on the outer wall of the outer frame (61) and meshing with the driven gear (642).

7. The connecting structure of the crank arm and the hydraulic cylinder of a hydraulic mud gun according to claim 1, characterized in that: The linkage locking member (9) comprises a trapezoidal seat (91) fixedly connected to the outer wall of the sleeve (11), and push bars (92) are slidably provided on the inclined surfaces on both sides of the trapezoidal seat (91), and the end of the push bar (92) close to the traction column (10) is symmetrically fixedly connected to a base column (93), and the outer wall of the base column (93) is sleeved with a clamping column (94), and the clamping column (94) and the base column (93) are connected via a second elastic member (95); A locking disk (96) extending into the inner cavity of the sleeve (11) is symmetrically arranged on the outer wall of the sleeve (11), and two groups of teeth (97) plugged into the clamping column (94) are evenly arranged on the outer wall of the locking disk (96) in the circumferential direction, and the tooth grooves of the two groups of circumferential teeth (97) are staggered. The outer wall of the traction column (10) is evenly arranged in the longitudinal direction with tooth grooves (98) meshing with the teeth (97), and the outer wall of the trapezoidal seat (91) is provided with a locking driving member (8) for driving the two pushing bars (92) to move in the same direction at the same time.

8. The connecting structure of the crank arm and the hydraulic cylinder of a hydraulic mud gun according to claim 7, characterized in that: The locking drive member (8) comprises two meshing direction-adjusting gears (81) rotatably arranged on the side wall of the trapezoidal seat (91), a propulsion gear (82) and a driving gear (83) respectively meshing with the two direction-adjusting gears (81) being rotatably arranged on the side wall of the trapezoidal seat (91), and racks (84) respectively meshing with the propulsion gear (82) and the driving gear (83) being arranged on the side walls of the two propulsion bars (92).

9. The connecting structure of the crank arm and the hydraulic cylinder of a hydraulic mud gun according to claim 1, characterized in that: The point-by-point self-locking component (7) comprises a double-headed spring piece (71) fixedly connected to the bottom end of the supporting inner arm (14); the inner wall of the supporting outer arm (13) is uniformly provided with spherical grooves (72) in the longitudinal direction; and spherical clamping parts (73) engaging with the spherical grooves (72) are fixedly mounted at both ends of the double-headed spring piece (71).

10. The connecting structure of the crank arm and the hydraulic cylinder of a hydraulic mud gun according to claim 1, characterized in that: The elastic telescopic member (12) comprises an outer support tube (22) rotatably arranged on the crank arm (1), an inner support rod (21) is rotatably arranged on the outer wall of the sleeve (11), the outer support tube (22) is sleeved on the outside of the inner support rod (21), and the outer wall of the inner support rod (21) is sleeved on the third elastic member (15) located between the sleeve (11) and the outer support tube (22).

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