Quartering hammer with drill rod convenient to replace and method

Abstract

The invention discloses a breaking hammer with a drill rod convenient to replace and a method. The breaking hammer mainly comprises the drill rod, a lower cylinder body, a side clamping plate, a side frame and a side support. Side supports with hydraulic cylinders are arranged on the two sides of a lower cylinder body, the hydraulic cylinders drive a connecting frame to drive a supporting ring to move axially, and a correcting block connected with a spring is arranged on the supporting ring and matched with a flat pin clamping area on a drill rod. And when the drill rod moves to the position of the fixing block, the fixing block triggers the correcting block to accurately clamp the drill rod, and dual functions are achieved: firstly, the drill rod is dynamically adjusted to enable the flat pin clamping area to be accurately aligned with the flat pin groove, and secondly, the drill rod is suspended and stably positioned through elastic clamping. According to the structural innovation, a hydraulic drive and mechanical linkage composite positioning mechanism is adopted, and the problems that a drill rod is difficult to replace on a construction site and the installation position deviation is large are effectively solved. Compared with the prior art, unification of quick disassembly and assembly and accurate positioning of the drill rod is achieved, and the equipment maintenance efficiency and the use safety are remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of breaking hammers, and in particular relates to a breaking hammer and a method for facilitating replacement of a drill rod. Background Art

[0002] A hydraulic breaker is a machine that can convert hydraulic energy into mechanical energy to perform work externally. It is mainly used for crushing, demolition, excavation of hard layers, etc. It is usually installed on excavators, loaders or power stations for use. Among them, the drill rod is an important working part of the breaker, but the drill rod needs to have a certain hardness and strength. The drill rod is solid and weighs tens of kilograms or even hundreds of kilograms, which is more difficult to assemble manually than the previous small breakers. For example, a patent application previously submitted by the inventor, with publication number CN114988293A, provides a large hydraulic breaker assembly system and drill rod assembly equipment. This technology can only be used for assembly lines within factories and cannot be used at the breaker construction site. This makes it difficult to replace the drill rod at the construction site, and it is urgent to solve this problem. Summary of the invention

[0003] The technical problems to be solved by the present invention are:

[0004] 1. How to solve the problem of difficult drill rod replacement at the construction site.

[0005] 2. How to solve the problem of accurate installation of the drill rod when replacing it.

[0006] 3. How to solve the problem of not being able to detect damage to the flat pin in time.

[0007] In order to solve the above technical problems, the inventors have obtained the technical solution of the present invention through practice and summary. The present invention adopts the following technical solution:

[0008] A breaker hammer for facilitating replacement of a drill rod, comprising:

[0009] A drill rod, on which a flat pin clamping area is provided;

[0010] A lower cylinder body is provided with a flat pin groove, a flat pin body is installed in the flat pin groove, and the flat pin body and the flat pin clamping area are in corresponding positions and are adapted to each other;

[0011] A side clamping plate and a side frame distributed on the side of the side clamping plate facing away from the lower cylinder body. Two groups of the side clamping plates and the side frame are provided. The two groups of side clamping plates are distributed on both sides of the lower cylinder body respectively. The two groups of side clamping plates and the side frame are clamped and fixed to the lower cylinder body by bolts.

[0012] Also includes:

[0013] Side bracket, the side bracket is installed at the side end of the side bracket, a hydraulic cylinder is installed on the side bracket, the piston rod of the hydraulic cylinder is connected to a connecting frame, a support ring is installed on the connecting frame, the axis of the support ring coincides with the axis of the drill rod after assembly, two sets of fixing seats are symmetrically installed on the support ring, a correction block is slidably matched on the fixing seat, and the side of the correction block facing away from the drill rod is connected to the fixing seat via a connecting spring, and the correction block and the flat pin clamping area are located in a corresponding position and adapted to each other;

[0014] The fixed block is fixedly mounted on the lower cylinder body and is used to drive the correction block to approach the drill rod.

[0015] Preferably, a back-stop tooth groove is provided in the middle of the bottom of the fixing seat;

[0016] The fixed block includes a fixed body and a movable body. The fixed body is installed on the lower cylinder body. The movable body is provided with a connecting column and a guide column. The guide column and the connecting column are both slidably matched with the fixed body. The connecting column is sleeved with a spring body. The movable body is provided with a gear body, and the gear body is adapted to the stop tooth groove.

[0017] In a preferred solution, a plurality of clamping rollers distributed circumferentially are mounted on the support ring, a push cylinder is mounted on the support ring, a piston rod of the push cylinder is connected to the clamping rollers, and the clamping rollers slide radially relative to the support ring.

[0018] Preferably, a restraining groove is provided on one side opposite to the two sets of side clamps and close to the lower cylinder body, and a cross pin is installed in the restraining groove. The cross pin is a telescopic structure, and is assembled in the restraining groove from the area between the side clamps to the side close to the lower cylinder body. After assembly, the cross pin fits against the end of the flat pin body and is confined in the flat pin groove.

[0019] In a preferred embodiment, the transverse pin includes a clamping portion, two telescopic ends slidably fitted inside the clamping portion, and an elastic body disposed between the two telescopic ends and inside the clamping portion;

[0020] The telescopic end is provided with an operating column located outside the clamping part, and the operating column is located on the side of the telescopic end facing away from the lower cylinder body. The telescopic end is socketed in the constraint groove, and the end of the telescopic end is provided with an extrusion slope that gradually deviates outward along the side close to the lower cylinder body. A pressurized expansion part is provided on the side of the clamping part facing the flat pin body. After the pressurized expansion part is subjected to the outward extrusion force of the flat pin body, it expands rapidly and drives the two telescopic ends to retract and compress the elastic body.

[0021] In a preferred embodiment, a recessed groove is provided on one side of the pressing part facing the lower cylinder body, a transmission gear is rotatably installed in the recessed groove, one end of the telescopic end extends into the recessed groove and is connected to a movable plate, a rack is installed on the movable plate, and two racks are meshed with the transmission gear and are distributed on both sides of the transmission gear;

[0022] The two ends of the elastic body are respectively connected to the corresponding moving plates.

[0023] In a preferred solution, a battery cell and a control module are installed inside the pressing part, the battery cell and the control module are electrically connected, and an open groove is provided on the side of the pressing part, and the open groove is communicated with the sinking groove;

[0024] The pressurized expansion member includes a resistance strain gauge located on one side close to the flat pin body and an airbag body installed in the pressing part, the resistance strain gauge is connected to the control module via the circuit, the airbag body is installed in the open groove, a connecting plate is installed on the airbag body, the connecting plate is installed at the notch of the open groove away from the sinking groove, a partition membrane and a resistance wire embedded in the partition membrane are pre-installed in the airbag body, the partition membrane divides the airbag body into a built-in compartment 1 and a built-in compartment 2, and the resistance wire is electrically connected to the control module via the circuit;

[0025] The resistance strain gauge and the telescopic end are coplanar with one side of the lower cylinder body.

[0026] In a preferred solution, a through electrode sheet is embedded in the open groove, the through electrode sheet is electrically connected to the control module, and an elastic terminal electrically connected to the internal resistance wire is arranged on the connecting plate, and the elastic terminal is electrically connected to the through electrode sheet.

[0027] In a preferred solution, a clamping body is installed on the side clamping plate, a sinking groove is provided on the lower cylinder body, and the sinking groove and the clamping body are adapted to be installed.

[0028] A method for replacing a drill rod of a breaker hammer, comprising the breaker hammer, and the steps are as follows:

[0029] Step 1: retract the two ends of the cross pin of the breaker hammer facing the driving side to disengage from the restraining notch. After removing the cross pin, push the flat pin body outward from the direction of the breaker hammer facing away from the driving side. After adjusting the angle of the breaker hammer to obliquely downward, the old drill rod will be disengaged from the lower cylinder body.

[0030] Step 2, control the vehicle until the crawler presses the operating end of the new drill rod until the assembly end of the drill rod tilts upward, adjust the angle of the breaker hammer until the axis of the lower cylinder body coincides with the axis of the drill rod, and the breaker hammer approaches the drill rod along the axis of the drill rod until the flat pin clamping area of ​​the drill rod passes through the support ring and the assembly end of the drill rod partially enters the interior of the lower cylinder body, and the crawler then detaches from the operating end of the drill rod;

[0031] Step 3, the piston rod of the hydraulic cylinder is retracted to drive the connecting frame and the support ring to move upward relative to the drill rod and the breaker hammer. During the upward movement of the support ring, the fixed block acts on the correction block to approach the flat pin clamping area, and while approaching the flat pin clamping area, the correction block corrects the flat pin clamping area of ​​the drill rod to an angle that matches the flat pin groove;

[0032] Step 4, adjust the angle of the breaker hammer to a vertical state, and adjust the height of the breaker hammer until the drill rod is in a suspended state, the push cylinder drives the clamping roller to fit the surface of the drill rod, adjust the height of the breaker hammer until the operating end of the drill rod is in contact with the ground and remains in a vertical state, the piston rod of the hydraulic cylinder extends outward to drive the connecting frame and the support ring to move downward relative to the drill rod and the breaker hammer, the fixed block is separated from the correction block, the correction block is automatically reset under the action of the connecting spring, the correction block and the flat pin clamping area are completely separated, and the breaker hammer is adjusted to move vertically downward relative to the drill rod until the flat pin clamping area and the flat pin groove position correspond front and back;

[0033] Step 5, assemble the flat pin body in the flat pin groove from the driving side to the inside, and extend the two ends of the cross pin inward into the restraining notch, and the cross pin assembles the flat pin body in the flat pin groove;

[0034] Step 6: The push cylinder drives the clamping roller to reset and detach from the drill rod surface to the initial state, and the drill rod assembly operation is completed.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The present invention installs a side bracket on the side bracket, and utilizes the hydraulic cylinder on the side bracket to connect the connecting frame. By moving the connecting frame, when it moves to the fixed block, the fixed block will act on the correction block to clamp the flat pin clamping area of ​​the drill rod (they are in contact and the force between the two can be ignored). On the one hand, the flat pin clamping area and the flat pin groove position on the drill rod can be adjusted to correspond up and down. On the other hand, when the drill rod is adjusted to be suspended, it can not fall and will not generate lateral force on the hydraulic cylinder, so that the structure of the breaker will be more stable, so that the drill rod can be accurately assembled and it can also be convenient to replace the drill rod at the construction site.

[0037] 2. The fixed block of the present invention adopts a fixed body and a movable body structure design. The movable body clamps the flat pin clamping area of ​​the correction block under the action of the spring body to prevent the correction block from retreating, thereby ensuring that the drill rod will not fall when suspended in the air.

[0038] 3. The present invention also provides a centering structure on the support ring, and uses clamping rollers to adjust the front, rear, left and right positions of the drill rod to achieve axis coincidence with the assembly hole of the lower cylinder body, which can ensure that the axis can always coincide after the correction block is detached, thereby ensuring accurate assembly of the drill rod.

[0039] 4. The present invention further optimizes the structure of the breaker hammer. The transverse pins on the traditional breaker hammer are all installed through the side, which causes the flat pin body to move in the flat pin groove. At the same time, due to the existence of the empty hitting phenomenon, a step groove is easily formed in the flat pin groove, which can easily accelerate the damage of the flat pin or the cylinder body. The inventor optimizes the structure by installing the transverse pins from the front and rear sides of the side frame and utilizing the telescopic characteristics of the end of the transverse pin to confine the flat pin body in the flat pin groove without moving in the depth direction, thereby solving the problem of the step groove and the problem of premature damage to the breaker hammer.

[0040] 5. The present invention further optimizes the structure of the breaker hammer. The flat pin on the traditional breaker hammer will not cause lateral displacement and pushing on the cross pin until it is damaged, which may easily cause the flat pin to get stuck or broken, or the cross pin to get stuck or broken, or the drill rod to get stuck in the cylinder body. Only then can the operator find that the corresponding parts need to be replaced. However, this problem may easily cause damage to the cylinder body, and the repair is difficult and the operation is too complicated, especially when the cross pin and the flat pin are stuck in the cylinder body. The inventor optimizes the structure and uses the pressure expansion part on the cross pin to automatically release the constraint on the flat pin body when the pressure expansion part is applied to the flat pin body beyond the set range. This can remind the operator that the corresponding parts need to be replaced, and can also eliminate the previous process steps of drilling holes in the cylinder body (installing cross pins) to avoid damage to the cylinder body caused by lateral forces on the flat pin body. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is the overall structural front view of the present invention;

[0042] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0043] Figure 3 A structural diagram of the correction block of the present invention correcting the angle of the drill rod;

[0044] Figure 4 for Figure 2 The structural diagram of the fixed block in the figure;

[0045] Figure 5 for Figure 2 Structural diagram of the middle correction block;

[0046] Figure 6 A top view of the structure of the support ring of the present invention;

[0047] Figure 7 for Figure 6 A partial enlarged view of point B in the middle;

[0048] Figure 8 It is a structural diagram of the fixing seat of the present invention;

[0049] Fig. 9 It is a cross-sectional view of the cross pin of the present invention;

[0050] Fig.10 for Fig. 9 A partial enlarged view of point B in the middle;

[0051] Fig.11 for Fig. 9 A partial enlarged view of point C in the middle;

[0052] Fig.12 is a cross-sectional view of the airbag body;

[0053] Fig.13 It is a schematic diagram of the structure of the airbag;

[0054] Fig.14 This is a structural diagram of the side of the pressing part facing the lower cylinder body;

[0055] Fig.15 It is a horizontal cross-sectional view of the lower cylinder body at the flat pin body;

[0056] Fig.16 This is the control principle diagram of the pressurized expansion member.

[0057] In the figure:

[0058] 10. Drill rod; 11. Flat pin clamping area; 20. Lower cylinder body; 30. Side clamping plate; 31. Clamping body; 32. Sinking trough; 40. Side frame; 50. Side bracket; 51. Hydraulic cylinder; 52. Connecting frame; 53. Support ring; 531. Clamping roller; 532. Push cylinder; 54. Fixed seat; 541. Retraction tooth groove; 55. Correction block; 56. Connecting spring; 60. Fixed block; 61. Fixed body; 62. Movable body; 63. Connecting column; 64. Guide column; 65. Spring body; 66. Gear body; 70. Horizontal pin; 71. Pressing part; 711. Battery cell; 712. Control module; 713. Opening slot; 714. Electrode plate; 715. External opening; 72. Telescopic end; 721. Operating column; 73. Elastomer; 74. Pressure expansion member; 741. Resistive strain gauge; 742. Airbag body; 743. Connecting plate; 744. Separating membrane; 745. Resistance wire; 746. Elastic terminal; 75. Sinking slot; 76. Transmission gear; 77. Moving plate; 78. Rack; 80. Flat pin body. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0060] Example 1

[0061] like Figures 1 to 5 , Figure 8 As shown, a breaker hammer for facilitating replacement of a drill rod comprises:

[0062] A drill rod 10, on which a flat pin clamping area 11 is provided;

[0063] The lower cylinder body 20 is provided with a flat pin groove, in which a flat pin body 80 is installed, and the flat pin body 80 and the flat pin clamping area 11 correspond in position and fit each other;

[0064] The side clamping plate 30 and the side frame 40 are distributed on the side of the side clamping plate 30 facing away from the lower cylinder body 20. The side clamping plate 30 and the side frame 40 are provided in two groups. The two groups of side clamping plates 30 are respectively distributed on both sides of the lower cylinder body 20. The two groups of side clamping plates 30 and the side frame 40 are clamped and fixed to the lower cylinder body 20 by bolts.

[0065] Also includes:

[0066] Side bracket 50, side bracket 50 is installed at the side end of side bracket 40, hydraulic cylinder 51 is installed on side bracket 50, oil supply and outlet of hydraulic cylinder 51 are connected to the hydraulic system of breaker, piston rod of hydraulic cylinder 51 is connected to connecting frame 52, supporting ring 53 is installed on connecting frame 52, axis of supporting ring 53 coincides with axis of drill rod 10 after assembly, two groups of fixing seats 54 are symmetrically installed on supporting ring 53, correction block 55 is slidably matched on fixing seat 54, and the side of correction block 55 facing away from drill rod 10 is connected to fixing seat 54 via connecting spring 56, correction block 55 and flat pin clamping area 11 are corresponding in position and fit each other;

[0067] The fixing block 60 is fixedly mounted on the lower cylinder body 20 and is used to drive the correction block 55 to approach the drill rod 10 .

[0068] During implementation, the drill rod 10 is installed in the lower cylinder 20 through the flat pin body 80, the side clamps 30 are distributed on both sides of the lower cylinder 20, and the side frames 40 are distributed on both sides of the side clamps 30, and are connected by bolts to form a whole. Of course, the breaker also includes a middle cylinder, an upper cylinder, and a hydraulic system. When the drill rod 10 is replaced at the construction site, the assembly end of the drill rod 10 passes through the support ring 53 and partially enters the lower cylinder 20, and the connecting frame 52 is driven upward relative to the drill rod 10 by the hydraulic cylinder 51. The correction block 55 clamps the fixed flat pin clamping area 11 under the action of the fixing block 60 to complete the angle adjustment of the drill rod 10 to the front and rear positions of the flat pin clamping area 11 and the flat pin groove, and then the flat pin body 80 is installed in the flat pin groove to complete the assembly operation of the drill rod 10.

[0069] Example 2

[0070] On the basis of Example 1, Figures 2 to 5 As shown, a back-stop tooth groove 541 is provided at the middle of the bottom of the fixing seat 54;

[0071] The fixed block 60 includes a fixed body 61 and a movable body 62. The fixed body 61 is installed on the lower cylinder body 20. The movable body 62 is provided with a connecting column 63 and a guide column 64. The guide column 64 and the connecting column 63 are both slidably matched with the fixed body 61. A spring body 65 is mounted on the connecting column 63. The movable body 62 is provided with a gear body 66, which is adapted to the stop groove 541.

[0072] After the movable body 62 pushes the correction block 55 close to the drill rod 10 for correction and contacts the flat pin clamping area, it can detach from the top surface of the correction block 55 under the action of the spring body 65 and complete the adaptation assembly of the anti-retraction tooth groove 541 and the gear body 66 to prevent the correction block 55 from retreating.

[0073] Since the cylinder body 20 and the drill rod 10 are assembled in a threading manner, if only the correction method is adopted, after the correction block 55 releases the drill rod 10, the position of the drill rod 10 will deviate, and the drill rod 10 cannot be assembled quickly or accurately. Figure 6 , 7 As shown, the inventor therefore installs four groups of clamping rollers 531 with equal circumferential spacing on the support ring 53, and a push cylinder 532 is installed on the support ring 53. The piston rod of the push cylinder 532 is connected to the clamping roller 531, and the clamping roller 531 slides radially relative to the support ring 53. The clamping roller 531 is driven by the push cylinder 532 to align the drill rod 10 and the lower cylinder body 20, so as to avoid the problem of misalignment between the flat pin clamping area 11 and the flat pin groove when the correction block 55 releases the drill rod 10.

[0074] Example 3

[0075] On the basis of Example 2, since the restriction of the traditional flat pin body is basically in the form of a side-mounted cross pin, it is necessary to open a cross pin hole on the lower cylinder body. When the flat pin body is constrained by the cross pin hole, the flat pin body and the cross pin cannot be in close contact, which results in the formation of a step groove in the flat pin groove when a blank shot is inevitable. The appearance of the step groove will accelerate the damage of the flat pin body or the cylinder body. For this purpose, the inventor provides a constraint notch on the opposite side of the two sets of side clamps 30 and close to the lower cylinder body 20, such as Figure 1 , Fig. 9 , Fig.15 As shown, the process step of drilling a hole on the lower cylinder body is omitted, and it is more convenient to open an opening on the side clamp plate 30. A cross pin 70 is installed in the constraint groove. The cross pin 70 is a telescopic structure. The cross pin 70 is assembled in the constraint groove from the area between the side clamp plates 30 to the side close to the lower cylinder body 20. In this way, the end position of the flat pin body 80 can be effectively restricted, and no step groove will be formed in the groove, thereby ensuring the stability and durability of the structure. After assembly, the cross pin 70 fits on the end of the flat pin body 80 and restricts the flat pin body 80 in the flat pin groove.

[0076] Example 4

[0077] On the basis of Example 2, since the flat pin body is installed in the flat pin groove to limit the falling of the drill rod, the problem of empty gun shooting will inevitably occur. Frequent empty gun shooting will cause the surface of the flat pin body to deform and fall off. When the ore or hard material is crushed again, the flat pin body will run to one side, which may easily cause the cross pin to be pushed, and the cross pin may be broken or the constraint slot may be broken. The inventor solves this problem by performing the following optimization, such as Figures 9 to 15 As shown, the cross pin 70 includes a pressing portion 71, two telescopic ends 72 slidably fitted inside the pressing portion 71, and an elastic body 73 disposed between the two telescopic ends 72 and disposed inside the pressing portion 71;

[0078] The telescopic end 72 is provided with an operating column 721 located outside the clamping part 71. The operating column 721 is located on the side of the telescopic end 72 facing away from the lower cylinder 20. The telescopic end 72 is inserted into the constraint notch. The end of the telescopic end 72 is provided with an extrusion slope that gradually deviates outward along the side close to the lower cylinder 20. The inclination angle of the extrusion slope is 45°-70°. In order to provide a pressure expansion member 74 on the side of the clamping part 71 facing the flat pin body 80, the pressure expansion member 74 expands rapidly after receiving the outward extrusion force of the flat pin body 80, driving the two telescopic ends 72 to retract and compress the internal elastic body 73. In particular, the pressure expansion member 74 can be used to realize the direct fall-off of the cross pin 70 while the flat pin body 80 acts on the clamping part 71, thereby realizing the prompt that the flat pin body 80 needs to be replaced.

[0079] Since there are two groups of flat pins 80 on the lower cylinder body, how to ensure that when one group of flat pins 80 is damaged and needs to be replaced, the other group does not affect the falling-off prompt effect of the cross pin 70, the inventor has made the following improvements: the pressing portion 71 is provided with a recessed notch 75 on the side facing the lower cylinder body 20, and a transmission gear 76 is rotatably installed in the recessed notch 75, one end of the telescopic end 72 extends into the recessed notch 75 and is connected to a moving plate 77, and a rack 78 is installed on the moving plate 77, and the two racks 78 are meshed with the transmission gear 76 and are distributed on both sides of the transmission gear 76;

[0080] Two ends of the elastic body 73 are connected to corresponding moving plates 77 respectively.

[0081] In order to avoid the problem that the flat pin body 80 is seriously damaged before the cross pin 70 automatically falls off, the inventor has made the following improvements: Fig. 9 As shown, a battery cell 711 and a control module 712 are installed inside the pressing part 71, and the battery cell 711 and the control module 712 are electrically connected. An opening groove 713 is provided on the side of the pressing part 71, and the opening groove 713 is communicated with the sinking groove 75;

[0082] like Figures 9 to 11, Fig.16 As shown, the pressurized expansion member 74 includes a resistance strain gauge 741 located on a side close to the flat pin body 80 and an airbag body 742 assembled in the pressing portion 71, the resistance strain gauge 741 is connected to the control module 712 via a circuit, the airbag body 742 is installed in the opening groove 713, a connecting plate 743 is installed on the airbag body 742, the connecting plate 743 is assembled at the notch of the opening groove 713 away from the sinking groove 75, a partition membrane 744 and a resistance wire 745 embedded in the partition membrane 744 are pre-installed in the airbag body 742, the partition membrane 744 separates the airbag body 742 into a built-in compartment 1 and a built-in compartment 2, and the resistance wire 745 is electrically connected to the control module 712 via a circuit;

[0083] The resistance strain gauge 741 and the telescopic end 72 are coplanar with one side of the lower cylinder body 20 .

[0084] like Fig.14 As shown, a through groove 715 is provided on the side of the clamping portion 71 opposite to the lower cylinder body 20, and the through groove 715 is communicated with the installation space of the airbag body 742, so that the airbag body 742 can push the lower cylinder body 20 from the front after expansion, ensuring that the cross pin 70 can fall off at the first time.

[0085] When the flat pin body 80 acts on the resistive strain gauge 741, and feeds back the force to the control module 712, when the set force threshold is exceeded, the circuit between the battery cell 711 and the resistance wire 745 is closed, the resistance wire 745 melts the partition membrane 744, and the pre-filled materials in the built-in compartment one and the built-in compartment two are mixed together to produce a chemical reaction (this type of reaction is an existing mature technology, such as a self-heating bag), which quickly releases a large amount of heat or gas to immediately expand the airbag body 742 and push it outward. At the same time, it also squeezes the movable plates 77 closer to each other, thereby automatically falling off the cross pin 70 from the constraint slot.

[0086] Since the airbag body 742 is disposable, it only needs to be equipped with repair parts at the factory later. In order to ensure that the resistance wire 745 and the battery cell 711 of the reassembled airbag body 742 can achieve circuit closure, the inventor has made the following optimization: the opening groove 713 is embedded with a through electrode sheet 714, and the through electrode sheet 714 is electrically connected to the control module 712. The connecting plate 743 is provided with an elastic terminal 746 electrically connected to the internal resistance wire 745, and the elastic terminal 746 is electrically connected to the through electrode sheet 714.

[0087] like Fig.15 As shown, a clamping body 31 is installed on the side clamping plate 30, and a sinking groove 32 is provided on the lower cylinder body 20, and the sinking groove 32 and the clamping body 31 are adapted to be installed.

[0088] A method for replacing a drill rod of a breaker hammer, comprising the breaker hammer, and the steps are as follows:

[0089] Step 1, retract the two ends of the cross pin 70 of the breaker facing the driving side to disengage from the restraining notch, remove the cross pin 70, push the flat pin body 80 outward from the direction of the breaker facing away from the driving side, adjust the angle of the breaker to obliquely downward, and the old drill rod 10 is disengaged from the lower cylinder 20;

[0090] Step 2, control the vehicle until the crawler presses the operating end of the new drill rod 10 until the assembly end of the drill rod 10 tilts upward, adjust the angle of the breaker hammer until the axis of the lower cylinder 20 coincides with the axis of the drill rod 10, and the breaker hammer approaches the drill rod 10 along the axis of the drill rod 10 until the flat pin clamping area 11 of the drill rod 10 passes through the support ring 53 and the assembly end of the drill rod 10 partially enters the interior of the lower cylinder 20, and the crawler then detaches from the operating end of the drill rod 10;

[0091] Step 3, the piston rod of the hydraulic cylinder 51 is retracted to drive the connecting frame 52 and the supporting ring 53 to move upward relative to the drill rod 10 and the breaker hammer. During the upward movement of the supporting ring 53, the fixing block 60 acts on the correcting block 55 to approach the flat pin clamping area 11, and while approaching the flat pin clamping area 11, the correcting block 55 corrects the flat pin clamping area 11 of the drill rod 10 to an angle that matches the flat pin groove;

[0092] Step 4, adjust the angle of the breaker hammer to a vertical state, and adjust the height of the breaker hammer until the drill rod 10 is in a suspended state, the push cylinder 532 drives the clamping roller 531 to fit the surface of the drill rod 10, and adjust the height of the breaker hammer until the operating end of the drill rod 10 contacts the ground and maintains a vertical state, the piston rod of the hydraulic cylinder 51 extends outward to drive the connecting frame 52 and the support ring 53 to move downward relative to the drill rod 10 and the breaker hammer, the fixed block 60 is separated from the correction block 55, and the correction block 55 is automatically reset under the action of the connecting spring 56, and the correction block 55 and the flat pin clamping area 11 are completely separated, and the breaker hammer is adjusted to move vertically downward relative to the drill rod 10 until the flat pin clamping area 11 and the flat pin groove position correspond to each other front and back;

[0093] Step 5, assemble the flat pin body 80 in the flat pin groove from the driving side to the inside, and stretch both ends of the cross pin 70 inward into the restraining notch, and the cross pin 70 assembles the flat pin body 80 in the flat pin groove;

[0094] Step 6, the push cylinder 532 drives the clamping roller 531 to reset and detach from the surface of the drill rod 10 to the initial state, and the assembly operation of the drill rod 10 is completed.

Claims

1. A breaker hammer that is convenient for replacing a drill rod, comprising: A drill rod (10), wherein a flat pin clamping area (11) is provided on the drill rod (10); A lower cylinder body (20) is provided with a flat pin groove, a flat pin body (80) is installed in the flat pin groove, and the flat pin body (80) and the flat pin clamping area (11) correspond in position and fit each other; A side clamping plate (30) and a side frame (40) disposed on the side of the side clamping plate (30) facing away from the lower cylinder body (20), wherein two groups of the side clamping plates (30) and the side frame (40) are provided, and the two groups of the side clamping plates (30) are respectively disposed on both sides of the lower cylinder body (20), and the two groups of the side clamping plates (30) and the side frame (40) are clamped and fixed to the lower cylinder body (20) by bolts; It is characterized by further comprising: A side bracket (50), the side bracket (50) is mounted on the side end of the side bracket (40), a hydraulic cylinder (51) is mounted on the side bracket (50), a piston rod of the hydraulic cylinder (51) is connected to a connecting frame (52), a support ring (53) is mounted on the connecting frame (52), the axis of the support ring (53) coincides with the axis of the assembled drill rod (10), two groups of fixed seats (54) are symmetrically mounted on the support ring (53), a correction block (55) is slidably matched on the fixed seat (54), and the side of the correction block (55) facing away from the drill rod (10) is connected to the fixed seat (54) via a connecting spring (56), and the correction block (55) and the flat pin clamping area (11) correspond in position and are mutually adapted; The fixing block (60) is fixedly mounted on the lower cylinder body (20) and is used to drive the correction block (55) to approach the drill rod (10).

2. A breaker hammer for easy replacement of drill rod according to claim 1, characterized in that: A back-stop tooth groove (541) is provided in the middle of the bottom of the fixing seat (54); The fixed block (60) comprises a fixed body (61) and a movable body (62). The fixed body (61) is mounted on the lower cylinder body (20). The movable body (62) is provided with a connecting column (63) and a guide column (64). The guide column (64) and the connecting column (63) are both slidably matched with the fixed body (61). A spring body (65) is sleeved on the connecting column (63). The movable body (62) is provided with a gear body (66). The gear body (66) is matched with the stop tooth groove (541).

3. A breaker hammer for easy replacement of drill rod according to claim 2, characterized in that: The support ring (53) is provided with a plurality of clamping rollers (531) distributed in the circumferential direction. The support ring (53) is provided with a push cylinder (532). The piston rod of the push cylinder (532) is connected to the clamping roller (531). The clamping roller (531) slides radially relative to the support ring (53).

4. A breaker hammer for easy replacement of drill rod according to claim 2 or 3, characterized in that: A restraining notch is provided on one side of the two groups of side clamps (30) opposite to each other and close to the lower cylinder body (20), and a transverse pin (70) is installed in the restraining notch. The transverse pin (70) is a telescopic structure. The transverse pin (70) is assembled in the restraining notch from the area between the side clamps (30) to the side close to the lower cylinder body (20). After assembly, the transverse pin (70) fits on the end of the flat pin body (80) and is confined in the flat pin groove.

5. A breaker hammer for easy replacement of drill rod according to claim 4, characterized in that: The transverse pin (70) comprises a pressing portion (71), two telescopic ends (72) slidably fitted inside the pressing portion (71), and an elastic body (73) disposed between the two telescopic ends (72) and disposed inside the pressing portion (71); The telescopic end (72) is provided with an operating column (721) located outside the pressing portion (71). The operating column (721) is located on the side of the telescopic end (72) facing away from the lower cylinder body (20). The telescopic end (72) is inserted into the restraining groove. The end of the telescopic end (72) is provided with an extrusion slope that gradually deviates outward along the side close to the lower cylinder body (20). A pressure expansion member (74) is provided on the side of the pressing portion (71) facing the flat pin body (80). After the pressure expansion member (74) is subjected to the outward extrusion force of the flat pin body (80), it expands rapidly and drives the two telescopic ends (72) to retract and compress the elastic body (73).

6. A breaker hammer for easy replacement of drill rod according to claim 5, characterized in that: A recessed groove (75) is provided on one side of the pressing portion (71) facing the lower cylinder body (20), a transmission gear (76) is rotatably mounted in the recessed groove (75), one end of the telescopic end (72) extends into the recessed groove (75) and is connected to a moving plate (77), a rack (78) is mounted on the moving plate (77), and two racks (78) are both meshed with the transmission gear (76) and are distributed on both sides of the transmission gear (76); Both ends of the elastic body (73) are connected to corresponding movable plates (77) respectively.

7. A breaker hammer for easy replacement of drill rod according to claim 6, characterized in that: A battery cell (711) and a control module (712) are installed inside the pressing portion (71), the battery cell (711) and the control module (712) are electrically connected, an open groove (713) is provided on the side of the pressing portion (71), and the open groove (713) and the sink groove opening (75) are in communication; The pressurized expansion member (74) comprises a resistance strain gauge (741) located on a side close to the flat pin body (80) and an airbag body (742) mounted in the pressing portion (71); the resistance strain gauge (741) is connected to the control module (712) via a circuit; the airbag body (742) is mounted in the opening groove (713); a connecting plate (743) is mounted on the airbag body (742); the connecting plate (743) is mounted at a groove on a side of the opening groove (713) away from the recessed groove (75); a partition membrane (744) and a resistance wire (745) embedded in the partition membrane (744) are pre-installed in the airbag body (742); the partition membrane (744) divides the airbag body (742) into a built-in compartment 1 and a built-in compartment 2; the resistance wire (745) is electrically connected to the control module (712) via a circuit; Wherein, the resistance strain gauge (741) and the telescopic end (72) are coplanar with one side of the lower cylinder body (20); A through-opening groove (715) is provided on one side of the pressing portion (71) opposite to the lower cylinder body (20).

8. A breaker hammer for easy replacement of drill rod according to claim 7, characterized in that: The open groove (713) is embedded with a through electrode sheet (714), the through electrode sheet (714) is electrically connected to the control module (712), and the connecting plate (743) is provided with an elastic terminal (746) electrically connected to the internal resistance wire (745), and the elastic terminal (746) is electrically connected to the through electrode sheet (714).

9. A breaker hammer for easy replacement of drill rod according to claim 1, characterized in that: A clamping body (31) is installed on the side clamping plate (30), a sinking groove (32) is provided on the lower cylinder body (20), and the sinking groove (32) and the clamping body (31) are adapted to be installed.

10. A method for replacing a drill rod of a breaker hammer, characterized in that: The method comprises the step of: comprising: Step 1, retract the two ends of the cross pin (70) of the breaker hammer facing the driving side to disengage from the restraining notch, remove the cross pin (70), push the flat pin body (80) outward from the direction of the breaker hammer facing away from the driving side, adjust the angle of the breaker hammer to obliquely downward, and then the old drill rod (10) will be disengaged from the lower cylinder body (20); Step 2, control the vehicle until the crawler presses the operating end of the new drill rod (10) until the assembly end of the drill rod (10) tilts upward, adjust the angle of the breaker hammer until the axis of the lower cylinder (20) coincides with the axis of the drill rod (10), and the breaker hammer approaches the drill rod (10) along the axis of the drill rod (10) until the flat pin clamping area (11) of the drill rod (10) passes through the support ring (53) and the assembly end portion of the drill rod (10) enters the interior of the lower cylinder (20), and the crawler is then separated from the operating end of the drill rod (10); Step 3, the piston rod of the hydraulic cylinder (51) is retracted to drive the connecting frame (52) and the supporting ring (53) to move upward relative to the drill rod (10) and the breaker hammer. During the upward movement of the supporting ring (53), the fixed block (60) acts on the correcting block (55) to approach the flat pin clamping area (11), and while approaching the flat pin clamping area (11), the correcting block (55) corrects the flat pin clamping area (11) of the drill rod (10) to an angle that matches the flat pin groove; Step 4, adjust the angle of the breaker hammer to a vertical state, and adjust the height of the breaker hammer until the drill rod (10) is in a suspended state, the push cylinder (532) drives the clamping roller (531) to fit the surface of the drill rod (10), and adjust the height of the breaker hammer until the operating end of the drill rod (10) contacts the ground and maintains a vertical state, the piston rod of the hydraulic cylinder (51) extends outward to drive the connecting frame (52) and the support ring (53) to move downward relative to the drill rod (10) and the breaker hammer, the fixed block (60) is separated from the correction block (55), the correction block (55) is automatically reset under the action of the connecting spring (56), the correction block (55) and the flat pin clamping area (11) are completely separated, and the breaker hammer is adjusted to move vertically downward relative to the drill rod (10) until the flat pin clamping area (11) and the flat pin groove position correspond to each other front and back; Step 5, assemble the flat pin body (80) in the flat pin groove from the driving side to the inside, and stretch the two ends of the cross pin (70) inward into the restraining notch, and the cross pin (70) assembles the flat pin body (80) in the flat pin groove; Step 6, the push cylinder (532) drives the clamping roller (531) to reset and detach from the surface of the drill rod (10) to the initial state, and the assembly operation of the drill rod (10) is completed.

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