A breaking hammer and method for facilitating replacement of a drill rod

Abstract

The application discloses a breaking hammer and method convenient for replacing a drill rod, and mainly comprises a drill rod, a lower cylinder body, side clamping plates, a side frame and side supports. The side supports provided with hydraulic cylinders on both sides of the lower cylinder body drive a support ring to move axially through a connecting frame, and a correction block connected with springs is arranged on the support ring and cooperates with a flat pin clamping area on the drill rod. When moving to a fixed block position, the fixed block triggers the correction block to accurately clamp the drill rod, realizing double functions: one is dynamically adjusting the drill rod to accurately align the flat pin clamping area with a flat pin groove, and the other is realizing stable positioning of the drill rod in the air through elastic clamping. The structure innovation adopts a composite positioning mechanism of hydraulic drive and mechanical linkage, effectively solving the problems of difficulty in replacing the drill rod and large installation position deviation on a construction site. Compared with the prior art, the application realizes the unity of quick disassembly and accurate positioning of the drill rod, and significantly improves equipment maintenance efficiency and use safety.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of breaking hammers, in particular to a breaking hammer facilitating replacement of a drill rod and a method. BACKGROUND

[0002] A hydraulic breaking hammer is a machine tool capable of converting hydraulic energy into mechanical energy to do work, mainly used for breaking, demolishing, excavating hard layers, etc. It is usually installed on excavators, loaders or power stations for use. The drill rod is an important working component of the breaking hammer, but the drill rod needs to have certain hardness and strength. The drill rod is solid and weighs dozens of kilograms or even hundreds of kilograms, which is more difficult to assemble manually than the previous small breaking hammer. For example, the inventor previously submitted a patent application with the publication number CN114988293A, which provides a large hydraulic breaking hammer assembly system and a drill rod assembly device. This technology can only be used in the factory assembly line, and cannot be used on the breaking hammer construction site, which makes it difficult to replace the drill rod on the construction site and urgently needs to solve such problems. SUMMARY

[0003] The technical problem to be solved by the application is:

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

[0005] 2. How to solve the problem of accurate installation of the drill rod position during replacement.

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

[0007] In order to solve the above technical problems, the inventor has summarized the technical solution of the application through practice. The application adopts the following technical solution:

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

[0009] a drill rod, the drill rod being provided with a cotter pin clamping area;

[0010] a lower cylinder body, the lower cylinder body being provided with a cotter pin slot, a cotter pin body being installed in the cotter pin slot, the cotter pin body and the cotter pin clamping area being positionally corresponding and mutually adaptable;

[0011] a side clamping plate and a side frame distributed on the side of the side clamping plate opposite to the lower cylinder body, the side clamping plate and the side frame each being provided with two groups, the two groups of side clamping plates being respectively distributed on the two sides of the lower cylinder body, the two groups of side clamping plates and the side frame clamping and fixing the lower cylinder body through bolts;

[0012] Further comprising:

[0013] The side support is installed at the side end of the side frame, a hydraulic cylinder is installed on the side support, a connecting frame is connected to the piston rod of the hydraulic cylinder, a support ring is installed on the connecting frame, the axis of the support ring coincides with the axis of the assembled drill rod, two groups of fixing seats are symmetrically installed on the support ring, a correction block is slidingly fitted on the fixing seat, and the side of the correction block away from the drill rod is connected to the fixing seat through a connecting spring, the correction block and the flat pin clamping area are positionally corresponding and mutually adapted;

[0014] The fixing block is fixedly installed on the lower cylinder body and used for driving the correction block to approach the drill rod.

[0015] Preferably, a retreat-preventing tooth groove is arranged in the middle of the bottom of the fixing seat.

[0016] The fixing block comprises 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 slidingly fitted with the fixed body, a spring body is sleeved on the connecting column, the movable body is provided with a tooth body, and the tooth body is adapted to the retreat-preventing tooth groove.

[0017] Preferably, a plurality of clamping rollers are circumferentially distributed on the support ring, a push oil cylinder is installed on the support ring, the piston rod of the push oil cylinder is connected to the clamping roller, and the clamping roller slides radially relative to the support ring.

[0018] Preferably, a constraint notch is arranged on one side of the two groups of side clamping plates and close to the lower cylinder body, a horizontal pin is installed in the constraint notch, the horizontal pin is of a telescopic structure, the horizontal pin is assembled in the constraint notch from the area between the side clamping plates to the side close to the lower cylinder body, and after assembly, the horizontal pin is attached to the end of the flat pin body and is limited in the flat pin groove.

[0019] Preferably, the horizontal pin comprises a pressing portion, two telescopic ends slidingly fitted in the inside of the pressing portion, and an elastic body arranged between the two telescopic ends and in the inside of the pressing portion.

[0020] An operation column located outside the pressing portion is arranged on the telescopic end, the operation column is located on the side of the telescopic end away from the lower cylinder body, the telescopic end is inserted into the constraint notch, the end of the telescopic end is provided with an extrusion inclined surface gradually deviating outward along the side close to the lower cylinder body, a pressure expansion element is arranged on the side of the pressing portion opposite to the flat pin body, and after bearing the outward extrusion force of the flat pin body, the pressure expansion element rapidly expands and drives the two telescopic ends to retract and compress the elastic body.

[0021] Preferably, a sunken notch is arranged on the side of the pressing portion opposite to the lower cylinder body, a transmission gear is rotatably installed in the sunken notch, one end of the telescopic end extends into the sunken notch and is connected with a moving plate, a rack is installed on the moving plate, the two racks are engaged 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] Preferably, the battery piece and the control module are installed in the compression part, and the battery piece and the control module are electrically connected; the side of the compression part is provided with an open slot, and the open slot is communicated with the sink opening.

[0024] The compression and expansion part comprises a resistance strain gauge located on one side of the flat pin body and an air bag body assembled in the compression part; the resistance strain gauge is connected to the control module through a circuit; the air bag body is installed in the open slot; a connecting plate is installed on the air bag body; the connecting plate is assembled at the slot opening away from the sink opening; a separation membrane and a resistance wire embedded in the separation membrane are pre-installed in the air bag body; the separation membrane separates the air bag body into an internal storage compartment I and an internal storage compartment II; the resistance wire is electrically connected to the control module through a circuit.

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

[0026] Preferably, a through electrode plate is embedded in the open slot; the through electrode plate is electrically connected to the control module; 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 plate.

[0027] Preferably, a clamping body is installed on the side clamping plate; a lower sink is arranged on the lower cylinder body; and the lower sink and the clamping body are adaptively installed.

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

[0029] Step 1: the ends of the transverse pin on the side of the breaking hammer facing the driving side are retracted to disengage from the constraint slot; after the transverse pin is removed, the flat pin body is pushed out from the direction opposite to the driving side; after the angle of the breaking hammer is adjusted to be obliquely downward, the old drill rod is disengaged from the lower cylinder body;

[0030] Step 2: the vehicle is controlled to make the track press the operation end of the new drill rod to make the assembly end of the drill rod be raised upward; the angle of the breaking hammer is adjusted to make the axis of the lower cylinder body coincide with the axis of the drill rod; the breaking 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 enters the inside of the lower cylinder body; then the track is disengaged from the operation 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 breaking hammer; during the upward movement of the support ring, the fixing block acts on the correction block to approach the flat pin clamping area; and at the same time, the correction block corrects the angle of the flat pin clamping area of the drill rod to adapt to the flat pin slot.

[0032] Step 4, the angle of the breaking hammer is adjusted to be vertical, the height of the breaking hammer is adjusted to be in a suspended state, the pushing oil cylinder drives the clamping roller to be attached to the surface of the drill rod, the height of the breaking hammer is adjusted to the operating end of the drill rod to be in contact with the ground and remain in a vertical state, the piston rod of the hydraulic cylinder is extended to drive the connecting frame and the supporting ring to move downward relative to the drill rod and the breaking hammer, the fixing block is separated from the correcting block, the correcting block is automatically reset under the action of the connecting spring, the correcting block and the flat pin clamping area are completely separated, and the adjusting breaking hammer is vertically lowered relative to the drill rod until the flat pin clamping area and the flat pin slot position correspond in front and back;

[0033] Step 5, the flat pin body is assembled in the flat pin slot from the driving side to the inner side, and the two ends of the cross pin are extended inward into the constraint slot, and the cross pin is assembled in the flat pin slot.

[0034] Step 6, the pushing oil cylinder drives the clamping roller to reset and separate from the surface of the drill rod to the initial state, and the drill rod completes the assembly operation.

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

[0036] 1. The side support is installed on the side frame, the hydraulic cylinder on the side support is connected to the connecting frame, the connecting frame is moved, when the connecting frame is moved to the fixing block, the fixing block acts on the correcting block to clamp the flat pin clamping area of the drill rod (in contact and the acting force between them can be ignored), which can adjust the flat pin clamping area on the drill rod to correspond to the flat pin slot position up and down, and can prevent the drill rod from falling when the drill rod is adjusted to be suspended and can not generate a lateral force on the hydraulic cylinder, so that the structure of the breaking hammer is more stable, so that the drill rod can be accurately assembled and the drill rod can be conveniently replaced in the construction site.

[0037] 2. The fixing block of the present application adopts a fixed body and a movable body structure design, and the movable body clamps the flat pin clamping area of the correcting block under the action of the spring body, and prevents the correcting block from retreating, thereby ensuring that the drill rod does not fall when it is suspended.

[0038] 3. The present application further provides a centering structure on the supporting ring, which adjusts the position of the drill rod in front and back and left and right by the clamping roller to realize the coincidence of the axis of the assembly hole of the lower cylinder body, ensures that the correcting block can always keep the axis coincident after being separated, and ensures the accurate assembly of the drill rod.

[0039] 4. The present application further optimizes the structure of the breaking hammer. The transverse pin of the traditional breaking hammer is installed from the side, which causes the transverse pin to move in the transverse pin slot, and the existence of the idle phenomenon easily forms a stepped slot in the transverse pin slot, thereby easily accelerating the damage of the transverse pin or the cylinder. The inventor optimizes the structure by installing the transverse pin from the front and rear sides of the side frame, and by using the telescopic characteristics of the end of the transverse pin, the transverse pin body can be limited in the transverse pin slot and cannot move in the depth direction, thereby solving the problem of the stepped slot and the problem of the early damage of the breaking hammer.

[0040] 5. The present application further optimizes the structure of the breaking hammer. The transverse pin of the traditional breaking hammer is installed from the side, which causes the transverse pin to move in the transverse pin slot, and the existence of the idle phenomenon easily forms a stepped slot in the transverse pin slot, thereby easily accelerating the damage of the transverse pin or the cylinder. The inventor optimizes the structure by installing the transverse pin from the front and rear sides of the side frame, and by using the telescopic characteristics of the end of the transverse pin, the transverse pin body can be limited in the transverse pin slot and cannot move in the depth direction, thereby solving the problem of the stepped slot and the problem of the early damage of the breaking hammer. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is the overall structure of the present application.

[0042] Figure 2 It is the overall structure of the present application. Figure 1 It is the overall structure of the present application.

[0043] Figure 3 It is the structure diagram of the correction block for correcting the angle of the drill rod.

[0044] Figure 4 It is the overall structure of the present application. Figure 2 It is the overall structure of the present application.

[0045] Figure 5 It is the overall structure of the present application. Figure 2 It is the overall structure of the present application.

[0046] Figure 6 It is the overall structure of the present application.

[0047] Figure 7 It is the overall structure of the present application. Figure 6 It is the overall structure of the present application.

[0048] Figure 8 It is the overall structure of the present application.

[0049] Figure 9 is a cross-sectional view of the transverse pin of the present application;

[0050] Figure 10 is a cross-sectional view of the transverse pin of the present application; Figure 9 is a partial enlarged view at B;

[0051] Figure 11 is a cross-sectional view of the transverse pin of the present application; Figure 9 is a partial enlarged view at C;

[0052] Figure 12 is a cross-sectional view of the air bag body;

[0053] Figure 13 is a structural schematic view of the air bag body;

[0054] Figure 14 is a structural view of the side of the lower cylinder body toward the pressing part;

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

[0056] Figure 16 is a control schematic view of the pressure expansion part.

[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 groove; 40, side frame; 50, side support; 51, hydraulic cylinder; 52, connecting frame; 53, support ring; 531, clamping roller; 532, pushing oil cylinder; 54, fixed seat; 541, stop 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, tooth body; 70, transverse pin; 71, pressing part; 711, battery piece; 712, control module; 713, open slot; 714, conductive piece; 715, through slot; 72, telescopic end; 721, operating column; 73, elastic body; 74, pressure expansion part; 741, resistance strain gauge; 742, air bag body; 743, connecting plate; 744, separation 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 application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0060] Embodiment 1

[0061] AsFigures 1 to 5 、 Figure 8 As shown, a breaker hammer that is convenient for replacing a drill rod comprises:

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

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

[0064] The side clamping plates 30 and the side frames 40 are distributed on the side of the side clamping plates 30 facing away from the lower cylinder body 20. There are two sets of side clamping plates 30 and side frames 40. The two sets of side clamping plates 30 are distributed on both sides of the lower cylinder body 20 respectively. The two sets of side clamping plates 30 and side frames 40 are fixed to the lower cylinder body 20 by bolts.

[0065] Also includes:

[0066] 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. The oil supply and outlet of the hydraulic cylinder 51 are connected to the hydraulic system of the breaker hammer. The piston rod of the hydraulic cylinder 51 is connected to the 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 sets of fixing seats 54 are symmetrically mounted on the support ring 53. A correction block 55 is slidably fitted on the fixing seat 54. The side of the correction block 55 facing away from the drill rod 10 is connected to the fixing seat 54 via a connecting spring 56. The correction block 55 and the flat pin clamping area 11 correspond in position and fit with 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 body 20 through the flat pin body 80, the side clamps 30 are distributed on both sides of the lower cylinder body 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 hammer also includes a middle cylinder, an upper cylinder, and a hydraulic system. When replacing the drill rod 10 at the construction site, the assembly end of the drill rod 10 passes through the support ring 53 and partially enters the lower cylinder body 20. The hydraulic cylinder 51 drives the connecting frame 52 to move upward relative to the drill rod 10. 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. 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 backstop groove 541 is provided at the middle of the bottom of the fixing seat 54;

[0071] The fixed block 60 comprises a fixed body 61 mounted on the lower cylinder body 20 and a movable body 62 provided with a connecting column 63 and a guide column 64, both of which are in sliding fit with the fixed body 61, and the connecting column 63 is sleeved with a spring body 65, and the movable body 62 is provided with a meshing body 66 which is adapted to the stop tooth groove 541.

[0072] After the movable body 62 is corrected and contacted in the flat pin clamping area of the push correction block 55, it can be separated from the top surface of the correction block 55 under the action of the spring body 65 and the stop tooth groove 541 and the meshing body 66 are adapted and assembled, preventing the correction block 55 from retreating.

[0073] Since the lower cylinder body 20 and the drill rod 10 are assembled in a penetrating manner, if only the correction method is used, after the correction block 55 loosens the drill rod 10, the position of the drill rod 10 will deviate, and then the drill rod 10 cannot be quickly or accurately assembled, as shown in Figure 6 、 7 The four groups of clamping rollers 531 are circumferentially and equidistantly distributed on the support ring 53, and the push oil cylinder 532 is mounted on the support ring 53, the piston rod of the push oil 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 driven by the push oil cylinder 532 centers the drill rod 10 and the lower cylinder body 20, avoiding the misalignment of the flat pin clamping area 11 and the flat pin groove when the correction block 55 loosens the drill rod 10.

[0074] Embodiment 3

[0075] On the basis of embodiment 2, due to the limitation of the traditional flat pin body, basically the side-mounted horizontal pin method is adopted, which requires opening a horizontal pin hole in the lower cylinder body to realize the constraint of the flat pin body through the horizontal pin hole. The flat pin body and the horizontal pin cannot be in close contact, which will inevitably form a stepped groove in the flat pin groove when the gun is empty, and the appearance of the stepped groove will accelerate the damage of the flat pin body or the cylinder body. To this end, the inventors set a constraint notch on one side of the two groups of side clamps 30 relative to the lower cylinder body 20, as shown in Figure 1 、 Figure 9 、 Figure 15 The opening process step on the lower cylinder body is omitted, and the opening on the side clamps 30 is more convenient. The horizontal pin 70 is installed in the constraint notch, and the horizontal pin 70 is a telescopic structure. The horizontal pin 70 is assembled in the constraint notch from the area between the side clamps 30 to the side close to the lower cylinder body 20. In this way, the position of the end of the flat pin body 80 can be effectively limited, and the stepped groove will not appear in the groove, thereby ensuring the structural stability and durability, and the assembled horizontal pin 70 is attached to the end of the flat pin body 80 and limits the flat pin body 80 in the flat pin groove.

[0076] Embodiment 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 crushing ore or hard materials again, it will cause the flat pin body to run to one side, which will easily cause the cross pin to be pushed, and the cross pin to be broken or the constraint notch to be broken. The inventor solves this problem by performing the following optimization, such as Figures 9 to 15 As shown, the transverse pin 70 includes a pressing portion 71, two telescopic ends 72 slidingly fitted inside the pressing portion 71, and an elastic body 73 disposed between the two telescopic ends 72 and inside the pressing portion 71;

[0078] The telescopic end 72 is provided with an operating post 721 located outside the pressing portion 71. The operating post 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 restraining 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 extrusion slope has an inclination angle of 45°-70°. In order to prevent the pressing portion 71 from directly facing the flat pin body 80, a pressure expansion member 74 is provided. After receiving the outward extrusion force of the flat pin body 80, the pressure expansion member 74 rapidly expands, causing the two telescopic ends 72 to retract and compressing the internal elastic member 73. In particular, the pressure expansion member 74 can achieve direct detachment of the cross pin 70 while the flat pin body 80 acts on the pressing portion 71, thereby providing a 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 will not affect the falling-off prompt effect of the cross pin 70? The inventors have made the following improvements: a recessed notch 75 is provided on the side of the pressing portion 71 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 movable plate 77. A rack 78 is installed on the movable plate 77. The two racks 78 are engaged with the transmission gear 76 and are distributed on both sides of the transmission gear 76.

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

[0081] In order to avoid the problem that the flat pin body 80 only automatically falls off after being seriously damaged, the inventors have made the following improvements: Figure 9 As shown, 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 opening groove 713 is provided on the side of the pressing portion 71. The opening groove 713 communicates with the sinking groove 75.

[0082] like Figures 9 to 11、 Figure 16 As shown, the pressurized expansion member 74 includes a resistance strain gauge 741 located on the side close to the flat pin 80 and an airbag 742 assembled in the pressing portion 71. The resistance strain gauge 741 is connected to the control module 712 via a circuit. The airbag 742 is installed in the opening groove 713. A connecting plate 743 is installed on the airbag 742. The connecting plate 743 is assembled at the notch 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 742. The partition membrane 744 separates the airbag 742 into the first internal storage compartment and the second internal storage compartment. 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 20 .

[0084] like Figure 14 As shown, a through groove 715 is provided on the side of the clamping portion 71 opposite to the lower cylinder body 20. The through groove 715 is connected to 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 in 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 separation 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 pack), 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 causing the cross pin 70 to fall off the constraint slot.

[0086] Since the airbag body 742 is disposable, it only needs to be equipped with repair parts at the factory. 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 optimizations: the opening groove 713 is embedded with a through electrode piece 714, and the through electrode piece 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 piece 714.

[0087] like Figure 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, the broken hammer face to the driver side of the cross pin 70 both ends of the inner collection from the constraint notch, after removing the cross pin 70, from the broken hammer back to the driver side of the direction to the outside of the flat pin body 80, adjust the angle of the broken hammer to oblique downward, the old drill rod 10 from the lower cylinder 20 from the disengagement;

[0090] Step 2, the vehicle to the operation end of the new drill rod 10 to the assembly end of the drill rod 10 to the upturned, adjust the angle of the broken hammer to the axis of the lower cylinder 20 and the axis of the drill rod 10 coincide, the broken hammer along the axis of the drill rod 10 close to the drill rod 10, to the flat pin card area 11 of the drill rod 10 through the support ring 53 and the assembly end of the drill rod 10 part into the inside of the lower cylinder 20, the track is then disengaged from the operation end of the drill rod 10;

[0091] Step 3, the piston rod of the hydraulic cylinder 51 retraction driven connection frame 52 and support ring 53 relative to the drill rod 10 and the broken hammer up, during the uplink of the support ring 53, the fixed block 60 action correction block 55 close to the flat pin card area 11, and close to the flat pin card area 11 at the same time, the correction block 55 corrects the angle of the flat pin card area 11 of the drill rod 10 to the flat pin slot;

[0092] Step 4, adjust the angle of the broken hammer to the vertical state, and adjust the height of the broken hammer to the drill rod 10 in the suspended state, the push oil cylinder 532 driven clamping roller 531 close to the surface of the drill rod 10, adjust the height of the broken hammer to the operation end of the drill rod 10 contact on the ground and keep vertical state, the piston rod of the hydraulic cylinder 51 extension driven connection frame 52 and support ring 53 relative to the drill rod 10 and the broken hammer down, the fixed block 60 from the correction block 55, the correction block 55 under the action of the connecting spring 56 automatic reset, the correction block 55 and the flat pin card area 11 completely separated, adjust the broken hammer relative to the drill rod 10 vertical down until the flat pin card area 11 and the flat pin slot position before and after the corresponding;

[0093] Step 5, the flat pin body 80 from the driver side to the inside of the flat pin slot, and the both ends of the cross pin 70 to the inside of the constraint notch, the cross pin 70 assembled in the flat pin body 80 in the flat pin slot;

[0094] Step 6, the push oil cylinder 532 driven clamping roller 531 reset from the surface of the drill rod 10 to the initial state, the drill rod 10 complete assembly work.

Claims

1. A breaker hammer that is easy to replace a drill rod, comprising: A drill rod (10), wherein a flat pin clamping area (11) is provided on the drill rod (10); The 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 with each other; A side clamping plate (30) and a side frame (40) distributed 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 side clamping plates (30) are respectively distributed on both sides of the lower cylinder body (20), and 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; It is characterized by further comprising: A side bracket (50) is installed at a side end portion of the side bracket (40). A hydraulic cylinder (51) is installed on the side bracket (50). The piston rod of the hydraulic cylinder (51) is connected to a connecting frame (52). A support ring (53) is installed 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 installed on the support ring (53). A correction block (55) is slidably fitted on the fixed seat (54). 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). The correction block (55) and the flat pin clamping area (11) correspond in position and are adapted to each other. The fixed 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 rods 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) includes 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 rodent body (66). The rodent body (66) is adapted to the anti-retreat tooth groove (541).

3. A breaker hammer for easy replacement of drill rod according to claim 2, characterized in that: A plurality of circumferentially distributed clamping rollers (531) are mounted on the support ring (53), a push oil cylinder (532) is mounted on the support ring (53), a piston rod of the push oil cylinder (532) is connected to the clamping rollers (531), and the clamping rollers (531) slide radially relative to the support ring (53).

4. A breaker hammer for easy replacement of drill rods 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) is fitted to 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 rods according to claim 4, characterized in that: The transverse pin (70) includes a pressing portion (71), two telescopic ends (72) slidingly fitted inside the pressing portion (71), and an elastic body (73) disposed between the two telescopic ends (72) and 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 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 body (20). A pressure-bearing expansion member (74) is provided on the side of the pressing portion (71) facing the flat pin body (80). The pressure-bearing expansion member (74) rapidly expands after receiving the outward extrusion force of the flat pin body (80) and drives the two telescopic ends (72) to retract and compress the elastic body (73).

6. A breaker hammer for easy replacement of drill rods according to claim 5, characterized in that: A recessed notch (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 notch (75), one end of the telescopic end (72) extends into the recessed notch (75) and is connected to a movable plate (77), a rack (78) is mounted on the movable plate (77), and two racks (78) are engaged 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 rods according to claim 6, characterized in that: A battery cell (711) and a control module (712) are installed inside the pressing portion (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 portion (71), and the opening groove (713) and the sinking groove (75) are in communication. The pressurized expansion member (74) includes a resistance strain gauge (741) located on a side close to the flat pin (80) and an airbag (742) assembled in the pressing portion (71); the resistance strain gauge (741) is connected to the control module (712) via a circuit; the airbag (742) is installed in the opening groove (713); a connecting plate (743) is installed on the airbag (742); the connecting plate (743) is assembled at a groove on a side of the opening groove (713) away from the sinking groove (75); a separation membrane (744) and a resistance wire (745) embedded in the separation membrane (744) are pre-installed in the airbag (742); the separation membrane (744) separates the airbag (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 (20); Wherein, 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 rods according to claim 7, characterized in that: 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 connection 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 rods according to claim 1, characterized in that: 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). 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 the restraining notch. After removing the cross pin (70), push the flat pin body (80) 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 (10) is disengaged from the lower cylinder (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) is tilted upward, adjust the angle of the breaker hammer until the axis of the lower cylinder (20) and the axis of the drill rod (10) coincide, 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); In 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). When 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 on the surface of the drill rod (10), adjust the height of the breaker hammer until the operating end of the drill rod (10) contacts the ground and remains in a vertical state, the piston rod of the hydraulic cylinder (51) extends outward to drive the connecting frame (52) and the support ring (53) 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 vertically descend 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 constraint notch, and assemble the flat pin body (80) in the flat pin groove with the cross pin (70); Step 6: The pushing oil cylinder (532) drives the clamping roller (531) to reset and separate from the surface of the drill rod (10) to the initial state, and the drill rod (10) completes the assembly operation.

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