Inner hole grinding device for front cylinder body of hydraulic breaking hammer

Abstract

The invention relates to the field of hydraulic breaking hammer machining, in particular to a grinding device for an inner hole of a front cylinder body of a hydraulic breaking hammer. The device comprises a base, a positioning cleaning part, a steel rope and a movable grinding part. The two groups of positioning cleaning parts are arranged on the base in a left and right mirroring manner; supporting assemblies for supporting a front cylinder body of the hydraulic breaking hammer above are arranged at the lower ends of the opposite ends of the two sets of positioning cleaning frames correspondingly, and through holes allowing steel ropes to penetrate through are formed in the upper ends of the opposite ends of the two sets of positioning cleaning frames correspondingly. The positioning cleaning assembly is arranged around the front end of each group of through holes. The movable grinding part limits movement and assists overall movement; the grinding assemblies are arranged on the two sides of the movable positioning assembly in the moving direction, the hole wall of the inner hole of the front cylinder body of the hydraulic breaking hammer is rotationally ground, and the grinding depth is adjustable. Through cooperation of the positioning cleaning part, the steel rope and the movable grinding part, synchronous grinding is achieved in the moving process, the moving track is stable, the grinding depth is adjustable, and then the grinding precision and efficiency are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic breaker hammer processing, in particular to a hydraulic breaker hammer front cylinder bore grinding device. Background Art

[0002] The main function of the inner bore of the front cylinder of a hydraulic breaker is to accommodate the piston and provide a stable motion path, ensuring that the piston reciprocates along the predetermined trajectory during the crushing process. The inner bore also acts as a seal between the piston and the breaker, preventing hydraulic oil leakage and thus maintaining the breaker's operating pressure and striking force. Grinding can remove burrs, scratches, and other surface defects on the inner bore of the front cylinder, improving surface smoothness and flatness. This helps reduce friction and wear on the piston during movement, extending the service life of the front cylinder and piston. Grinding accuracy measures the dimensional and shape accuracy of the inner bore after grinding.

[0003] The Chinese patent document with authorization announcement number CN117066996B proposes a hydraulic breaker hammer front cylinder bore grinding and positioning device, including a base, two columns are fixedly installed on the upper end of the base, a hydraulic chuck and a screw are mounted on the upper ends of the two columns, a splint is connected to the inner side of the hydraulic chuck, and several claws are connected to the middle of the hydraulic chuck and the splint. A positioning frame is also installed in the middle of the hydraulic chuck, and a grinding bracket is rotatably installed at the front end of the positioning frame.

[0004] In this device, threaded rods extend from both ends of the hydraulic breaker's front cylinder into internal holes for connection. The grinding bracket moves along the rods to perform the grinding. This grinding process presents two problems: 1. The threaded rods are rigid structures connected only at the ends, which can easily loosen at the joints, causing the two sections of the rod to misalign, affecting the grinding trajectory and reducing grinding accuracy. 2. The grinding process generates a large amount of debris, which accumulates on the rods, affecting the smooth movement of the grinding bracket and, in turn, affecting grinding efficiency. Summary of the Invention

[0005] In response to the problems existing in the background technology, a hydraulic breaker front cylinder bore grinding device is proposed, which is equipped with a positioning cleaning part, a steel rope and a moving grinding part to achieve synchronous grinding during the movement process, and the moving trajectory is stable and the grinding depth is adjustable, thereby ensuring grinding accuracy and efficiency.

[0006] The invention provides a hydraulic breaker front cylinder inner hole grinding device, which comprises a base, a positioning cleaning part, a steel rope and a movable grinding part.

[0007] Two groups of positioning and cleaning parts are arranged in a mirror-image manner on the base, one on the left and the other on the right. The two ends of the inner hole of the front cylinder of the hydraulic breaker are positioned by the relative translation of the positioning and cleaning frames; the lower ends of the opposite ends of the two groups of positioning and cleaning frames are respectively provided with support components for supporting the front cylinder of the hydraulic breaker above, and the upper ends of the opposite ends of the two groups of positioning and cleaning frames are respectively provided with through holes for the steel rope to pass through; the positioning and cleaning components are arranged around the front end of each group of through holes, and through the action of negative pressure, on the one hand, dust is sucked from the inner hole wall of the front cylinder of the hydraulic breaker during grinding, and on the other hand, the front cylinder of the hydraulic breaker during grinding is adsorbed and positioned; the rope winding component is arranged around the rear end of each group of through holes, and is used to fix and pull the steel rope.

[0008] The movable grinding part limits the moving trajectory to be coaxial with the inner hole of the front cylinder body of the hydraulic breaker through the movable positioning assembly located in the middle, and assists the overall movement at the same time; the grinding assemblies are arranged on both sides of the movable positioning assembly along the moving direction, and are driven by the driving member 1 to rotate and grind the wall of the hole in the front cylinder body of the hydraulic breaker, and the grinding depth is adjustable; the support column passes through the movable positioning assembly, the grinding assembly and the driving member 1; the movable positioning assembly and the driving member 1 are fixedly arranged on the support column; the grinding assembly is rotatably arranged on the support column; two steel ropes are respectively connected to the two ends of the support column.

[0009] Preferably, the steel rope cooperates with the corresponding side rope winding assembly to pull the support column, the mobile positioning assembly and the grinding assembly to move and grind along the same moving trajectory in the inner hole of the front cylinder of the hydraulic breaker; the positioning and cleaning assembly is synchronously positioned and cleaned.

[0010] Preferably, the movable positioning assembly includes a movable positioning plate coaxially penetrated by a support column; multiple groups of movable positioning members and air outlet members are alternately arranged along the circumference of the movable positioning plate; a second driving member is arranged on the support column, for driving the movable ends of multiple groups of movable positioning members to synchronously approach or move away from the inner hole wall of the front cylinder body of the hydraulic breaker; and the air outlet member supplies air between the two groups of grinding assemblies.

[0011] Preferably, the movable positioning member includes an adjusting sleeve that is driven by a second driving member and is rotatably arranged on the movable positioning plate; one end of the adjusting rod is threadedly connected to the adjusting sleeve with an internal thread by setting an external thread, and the other end of the adjusting rod extends out of the movable positioning plate and is provided with a telescopic shaft; the positioning frame is located on the telescopic end of the telescopic shaft; the moving wheel serves as the moving end and is rotatably arranged on the top of the positioning frame; the head end of the guide rod that slides through the movable positioning plate is connected to the outside of the positioning frame; the fixed plate is fixed on the movable positioning plate and is movably penetrated by the guide rod, and a laser transmitter is provided on the fixed plate; the movable plate is located at the tail end of the guide rod, and a laser receiver is provided on the movable plate.

[0012] Preferably, the air outlet member includes an air outlet tube that passes through the movable positioning plate; the air outlet tube has a built-in filter element, the tail of which is located in the movable positioning plate, and is provided with a negative pressure fan, and an air outlet seat is provided at the head.

[0013] Preferably, the grinding assembly includes a grinding disc coaxially penetrated by a support column and driven to rotate by a driving member; an adjusting member is arranged at the center of the grinding disc; multiple groups of grinding members are arranged along the circumference of the grinding disc, and the grinding depth is adjusted by the adjusting member.

[0014] Preferably, the adjusting member includes a double-layer gear ring that rotates synchronously with the origin; multiple groups of cams are spaced and rotatably arranged between the double-layer gear rings; the double-layer gear rings are coaxially sleeved on the outer periphery of the support column; the grinding member synchronously adjusts the grinding end position by cooperating one-to-one with the rotating cams.

[0015] Preferably, the grinding part includes a grinding knife that slides in and out of the grinding disc; the head end of the grinding knife is the grinding end, and the tail end is provided with a knife holder; the knife holder and the cam are slidably engaged; the guide column is located on both sides of the grinding knife, one end is connected to the knife holder, and the other end slides out of the grinding disc and is connected to the monitoring seat; the distance sensor is provided on the monitoring seat.

[0016] Preferably, the bottoms of the two sets of positioning cleaning frames are connected to the lead screw through a threaded connection to achieve relative movement, and the tops of the two sets of positioning cleaning frames are provided with cleaning grooves around the through holes; the positioning cleaning assembly includes an annular filter screen located in the cleaning groove; the vacuum pump is connected to the bottom of the cleaning groove through a pipeline; the annular adsorption net covers the notch of the cleaning groove; multiple circles of adsorption holes are provided on the annular adsorption net; the adsorption holes of the inner circle are opposite to the inner holes of the front cylinder body of the hydraulic breaker; the attached holes of the outer circle are opposite to the front cylinder body of the hydraulic breaker.

[0017] Preferably, the support assembly includes a lifting frame that can be moved up and down by a threaded connection with a lead screw; a fixed support seat is arranged on the lifting frame, with an open side and a sliding plate arranged inside; the extended support seat is located on the open side of the fixed support seat, one end of which is connected to the sliding plate through a connecting rod, and a magnetic strip is arranged at the other end.

[0018] Preferably, the rope winding assembly includes two sets of electric telescopic rods located on the positioning cleaning frame; the limiting ring is located between the two sets of electric telescopic rods and opposite to the through hole; the rope winding clamp is driven by motor 6 and is rotatably arranged in the limiting ring.

[0019] Compared to the prior art, the present invention offers the following beneficial technical advantages: A positioning and cleaning unit, a steel rope, and a mobile grinding unit are arranged in coordination. Two mirror-image positioning and cleaning units, one on the left and one on the right, position the two ends of the hydraulic breaker's front cylinder. The positioning and cleaning components on the positioning and cleaning units, through negative pressure, vacuum the inner bore walls of the hydraulic breaker's front cylinder during grinding and maintain suction and positioning of the hydraulic breaker's front cylinder during grinding. The rope winding assembly on the positioning and cleaning units secures and pulls the steel rope. A support column connects the mobile positioning assembly, the grinding assemblies on both sides, and the drive unit to form a single mobile grinding unit. During grinding, the rope winding assembly pulls one steel rope while the other unwinds, driving the mobile grinding unit. During movement, the mobile positioning assembly places a moving wheel close to the inner bore wall of the hydraulic breaker's front cylinder to maintain coaxial alignment between the support column, the steel rope, and the inner bore of the hydraulic breaker's front cylinder. The grinding assembly utilizes a cam that moves and rotates along a circle to further adjust the depth of the grinding blades, either individually or as a whole. As the grinding disc rotates, the grinding cutter grinds the inner hole wall. This achieves simultaneous grinding during movement, with a stable trajectory and adjustable grinding depth, ensuring both precision and efficiency. Furthermore, the air outlet element internally removes grinding debris from the inner hole walls of the hydraulic breaker's front cylinder body, while the suction holes in the inner ring externally absorb and clean grinding debris from the inner hole of the hydraulic breaker's front cylinder body, creating a coordinated cleaning channel. This ultimately reduces the impact of metal debris on the grinding process, further improving grinding results. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the inner hole grinding device of the front cylinder of the hydraulic breaker hammer in the present invention (viewing angle 1);

[0021] Figure 2 Schematic diagram of the structure of the inner hole grinding device of the front cylinder of the hydraulic breaker hammer in the present invention (viewing angle 2);

[0022] Figure 3 Schematic diagram of the splitting of the movable grinding part in the present invention;

[0023] Figure 4 It is a structural schematic diagram of the positioning and cleaning part of the present invention;

[0024] Figure 5 Schematic diagram of the internal structure of the mobile positioning component of the present invention;

[0025] Figure 6 Schematic diagram of the structure of the movable positioning member in the present invention;

[0026] Figure 7 Schematic diagram of the structure of the air outlet member in the present invention;

[0027] Figure 8Schematic diagram of the internal structure of the grinding assembly in the present invention;

[0028] Figure 9 Schematic diagram of the combined structure of the adjusting member and the grinding member in the present invention;

[0029] Figure 10 A partial disassembled schematic diagram of the positioning and cleaning portion of the present invention;

[0030] Figure 11 It is a schematic structural diagram of the rope winding assembly in the present invention.

[0031] Reference numerals: 1, base; 2, positioning cleaning portion; 201, positioning cleaning assembly; 20101, annular adsorption net; 20102, annular filter; 20103, vacuum pump; 202, rope winding assembly; 20201, electric telescopic rod; 20202, limiting ring; 20203, rope winding clamp; 203, support assembly; 20301, lifting frame; 20302, fixed support seat; 20303, reset spring 2; 20 304, sliding plate; 20305, extended support seat; 20306, magnetic strip; 204, positioning cleaning frame; 20401, cleaning slot; 20402, guide slot 2; 205, through hole; 3, steel rope; 4, mobile grinding part; 401, support column; 402, mobile positioning assembly; 403, grinding assembly; 404, driving part 1; 405, mobile positioning part; 40501, bevel gear 2; 40502, adjustment sleeve; 4 0503, adjustment rod; 40504, telescopic shaft; 40505, positioning frame; 40506, moving wheel; 40507, guide rod; 40508, fixed plate; 40509, moving plate; 40510, buffer spring; 406, air outlet; 40601, air outlet tube; 40602, air outlet seat; 40603, slag screen; 40604, negative pressure fan; 407, gear 2; 408, bevel gear 1; 409 , gear one; 410, movable positioning plate; 411, grinding plate; 412, mounting box; 413, drive sleeve; 414, gear three; 415, gear four; 416, adjusting part; 41601, gear ring; 41602, gear five; 41603, cam; 417, grinding part; 41701, tool holder; 41702, grinding knife; 41703, guide column; 41704, monitoring seat; 41705, reset spring one. DETAILED DESCRIPTION

[0032] Example 1, as Figure 1-Figure 2 As shown, the present invention provides a hydraulic breaker front cylinder bore grinding device, which includes a base 1, a positioning and cleaning part 2, a steel rope 3 and a movable grinding part 4.

[0033] like Figure 4As shown, two groups of positioning and cleaning parts 2 are arranged in a mirror-image manner on the base 1, one on the left and one on the right. The two ends of the inner hole of the front cylinder of the hydraulic breaker are positioned by relative translation of the positioning and cleaning frames 204; the lower ends of the opposite ends of the two groups of positioning and cleaning frames 204 are respectively provided with support components 203 for supporting the upper front cylinder of the hydraulic breaker hammer, and the upper ends of the opposite ends of the two groups of positioning and cleaning frames 204 are respectively provided with through holes 205 for the steel rope 3 to pass through; the positioning and cleaning components 201 are arranged around the front end of each group of through holes 205, and through the action of negative pressure, on the one hand, dust is sucked from the inner hole wall of the front cylinder of the hydraulic breaker hammer during grinding, and on the other hand, the front cylinder of the hydraulic breaker hammer during grinding is adsorbed and positioned; the rope winding component 202 is arranged around the rear end of each group of through holes 205, and is used to fix and pull the steel rope 3.

[0034] like Figure 3 As shown, the mobile grinding part 4 limits the moving trajectory to be coaxial with the inner hole of the front cylinder body of the hydraulic breaker through the mobile positioning component 402 located in the middle, and assists the overall movement at the same time; the grinding components 403 are arranged on both sides of the mobile positioning component 402 along the moving direction, and are driven by the driving member 404 to rotate and grind the wall of the inner hole of the front cylinder body of the hydraulic breaker, and the grinding depth is adjustable; the support column 401 passes through the mobile positioning component 402, the grinding component 403 and the driving member 404; the mobile positioning component 402 and the driving member 404 are fixedly arranged on the support column 401; the grinding component 403 is rotatably arranged on the support column 401; two steel ropes 3 are respectively connected to the two ends of the support column 401.

[0035] Support column 401 connects the mobile positioning assembly 402, the grinding assemblies 403 on either side, and the drive element 404 in series, forming the mobile grinding unit 4. During operation, one steel cable 3 pulls while the other cable 3 releases, driving the mobile grinding unit 4. During movement, the mobile positioning assembly 402 positions the unit, while the grinding assembly 403 grinds the inner hole wall during positioning and movement.

[0036] like Figure 5 As shown, the movable positioning assembly 402 includes a movable positioning plate 410 coaxially penetrated by the support column 401; multiple groups of movable positioning members 405 and air outlet members 406 are alternately arranged along the circumference of the movable positioning plate 410; the second driving member is arranged on the support column 401, and is used to drive the movable ends of multiple groups of movable positioning members 405 to synchronously approach or move away from the hole wall of the front cylinder body of the hydraulic breaker; the air outlet member 406 supplies air between the two groups of grinding assemblies 403.

[0037] By arranging the moving ends of multiple groups of movable positioning parts 405 to synchronously approach the wall of the inner hole of the front cylinder of the hydraulic breaker, the support column 401, the steel rope 3 and the inner hole of the front cylinder of the hydraulic breaker can be kept coaxial during movement, so that the moving trajectory of the entire movable grinding part 4 is consistent with the central axis of the inner hole of the front cylinder of the hydraulic breaker.

[0038] like Figure 6 As shown, the movable positioning member 405 includes an adjustment sleeve 40502 that is driven by a driving member 2 and is rotatably arranged on the movable positioning disk 410; one end of the adjustment rod 40503 is threadedly connected to the adjustment sleeve 40502 with an internal thread by setting an external thread, and the other end of the adjustment rod 40503 extends out of the movable positioning disk 410 and is provided with a telescopic shaft 40504; the positioning frame 40505 is located on the telescopic end of the telescopic shaft 40504; the moving wheel 40506 serves as the moving end and is rotatably arranged on the top of the positioning frame 40505; the head end of the guide rod 40507 that slides through the movable positioning disk 410 is connected to the outside of the positioning frame 40505; the fixed plate 40508 is fixed on the movable positioning disk 410 and is movably penetrated by the guide rod 40507, and a laser transmitter is set on the fixed plate 40508; the movable plate 40509 is located at the tail end of the guide rod 40507, and a laser receiver is set on the movable plate 40509.

[0039] It should be further explained that the buffer spring 40510 is mounted on the L-shaped guide rod 40507 and is located between the movable plate 40509 and the fixed plate 40508 .

[0040] It should be further explained that the driving member 2 includes a mounting shaft sleeved on the support column 401; the bevel gear 1 409 and the gear 1 409 are coaxially connected to the mounting shaft; the motor 1 located on one side of the mounting shaft drives the gear 2 407 to rotate; the gear 2 407 is meshed with the gear 1 409; the bevel gear 2 40501 is coaxially sleeved on the bottom of the adjustment sleeve 40502 in a one-to-one manner; and multiple groups of bevel gear 2 40501 are meshed with the bevel gear 1 409 in sequence.

[0041] During grinding, the gear transmission structure of drive element 2 causes multiple sets of adjustment sleeves 40502 to rotate synchronously. Guided by the guide rod 40507, the adjustment sleeves 40502 drive the movable wheels 40506 to move synchronously horizontally, approaching the inner hole wall of the hydraulic breaker's front cylinder body. The laser transmitter and laser receiver work together to record the movement distance of the movable wheels 40506. Based on the size and shape of the inner hole of the hydraulic breaker's front cylinder body, the telescopic end of the telescopic shaft 40504 is powered on and extended to fine-tune the position of each movable wheel 40506. This ensures that all movable wheels 40506 are completely in contact with the inner hole wall of the hydraulic breaker's front cylinder body during processing, and maintains the coaxiality of the support column 401, steel rope 3, and the inner hole of the hydraulic breaker's front cylinder body.

[0042] like Figure 7 As shown, the air outlet member 406 includes an air outlet tube 40601 that passes through the movable positioning plate 410; the air outlet tube 40601 has a built-in filter element, the tail of which is located in the movable positioning plate 410, and is provided with a negative pressure fan 40604, and an air outlet seat 40602 is provided at the head.

[0043] It should be further explained that a slag blocking net 40603 is provided on the air outlet of the air outlet seat 40602.

[0044] By setting up an air outlet piece 406, the air in the movable positioning plate 410 is drawn out and sent to the hole walls of the front cylinder body of the hydraulic breaker. On the one hand, the dust in the movable positioning plate 410 is automatically cleaned by adsorbing the negative pressure. On the other hand, the grinding debris attached to the hole walls of the front cylinder body of the hydraulic breaker is cleaned.

[0045] like Figure 8 As shown, the grinding assembly 403 includes a grinding disc 411 that is coaxially penetrated by the support column 401 and driven to rotate by a driving member 404; an adjusting member 416 is arranged at the center of the grinding disc 411; and multiple groups of grinding members 417 are arranged along the circumference of the grinding disc 411, and the grinding depth is adjusted by the adjusting member 416.

[0046] It should be further explained that the driving member 404 includes a driving sleeve 413 that is rotatably sleeved on the support column 401 and is connected to the grinding disk 411; gear three 414 is sleeved on the driving sleeve 413; the mounting box 412 is fixed by the support column 401 and is covered on the outside of the gear three 414; motor two is located on the mounting box 412 and drives gear four 415 to rotate; gear four 415 is meshed with gear three 414.

[0047] The gear transmission structure of the driving member 404 drives the grinding disc 411 to rotate while translating. The grinding member 417 grinds the bore wall of the front cylinder of the hydraulic breaker as it rotates. The adjusting member 416 adjusts the grinding depth.

[0048] like Figure 9 As shown, the adjusting member 416 includes a double-layer gear ring 41601 that rotates synchronously with the origin; multiple groups of cams 41603 are spaced and rotatably arranged between the double-layer gear rings 41601; the double-layer gear rings 41601 are coaxially sleeved on the outer periphery of the support column 401; the grinding member 417 synchronously adjusts the grinding end position by cooperating one-to-one with the rotating cams 41603.

[0049] It should be further explained that a third motor is provided in the grinding disc 411; the gear fifth 41602 is driven to rotate by the third motor and is engaged with the gear ring 41601 at the same time, so as to drive the double-layer gear ring 41601 to rotate at its origin.

[0050] It should be further explained that motor four is provided on the gear ring 41601; and the cam 41603 is driven by motor four to rotate independently.

[0051] There are two ways for cam 41603 to rotate. One is to move synchronously along the circumference as the origin of gear ring 41601 rotates. The other is to rotate on its own as driven by motor 4.

[0052] like Figure 9 As shown, the grinding element 417 includes a grinding blade 41702 that slides in and out of the grinding disc 411. The leading end of the grinding blade 41702 is the grinding end, and the trailing end is provided with a blade holder 41701. The blade holder 41701 slidably engages with a cam 41603. Guide posts 41703 are located on either side of the grinding blade 41702, one end connected to the blade holder 41701 and the other end slidingly extending out of the grinding disc 411 and connected to a monitoring base 41704. A distance sensor is provided on the monitoring base 41704.

[0053] It should be further explained that the return spring 41705 is sleeved on the guide column 41703, one end of which is connected to the tool holder 41701, and the other end is connected to the inner wall of the grinding disk 411.

[0054] When cam 41603 moves and rotates in sync, it drives tool holder 41701 to slide in and out of grinding disc 411. Grinding blade 41702 moves. A distance sensor monitors the distance between grinding blade 41702 and the inner wall of the hydraulic breaker's front cylinder. This distance data serves as a basis for adjusting the grinding depth. This adjustment can be synchronized or localized to meet grinding requirements.

[0055] like Figure 10 As shown, the base 1 is provided with a guide groove 1; a lead screw 1 is mounted within the guide groove 1 and driven by a motor 5. The bottoms of the two positioning cleaning frames 204 are threadedly connected to the lead screw 1 to achieve relative movement. The tops of the two positioning cleaning frames 204 are provided with a cleaning groove 20401 surrounding a through-hole 205. The positioning cleaning assembly 201 includes an annular filter 20102 positioned within the cleaning groove 20401. An air pump 20103 is connected to the bottom of the cleaning groove 20401 via a pipe. An annular adsorption net 20101 covers the notch of the cleaning groove 20401. The annular adsorption net 20101 is provided with multiple circles of adsorption holes. The adsorption holes in the inner circle are aligned with the inner holes of the hydraulic breaker's front cylinder body, while the attachment holes in the outer circle are aligned with the front cylinder body of the hydraulic breaker.

[0056] Before grinding, two sets of positioning and cleaning frames 204 move relative to each other, clamping the hydraulic breaker's front cylinder body from both ends. During grinding, the vacuum pump 20103 operates, and the suction holes in the inner ring absorb and clean debris from the inner hole of the hydraulic breaker's front cylinder body; the attachment holes in the outer ring absorb and secure the hydraulic breaker's front cylinder body.

[0057] like Figure 10As shown, two sets of positioning cleaning frames 204 are provided with guide groove 20402 located below the cleaning groove 20401; screw 2 driven to rotate by motor 6 is rotatably arranged in guide groove 20402; the support assembly 203 includes a lifting frame 20301 which is threadedly connected to screw 2 to achieve up and down movement; the fixed support seat 20302 is provided on the lifting frame 20301, one side of which is open, and a sliding plate 20304 is provided inside; the extended support seat 20305 is located on the open side of the fixed support seat 20302, one end of which is connected to the sliding plate 20304 through a connecting rod, and the other end is provided with a magnetic strip 20306.

[0058] It should be further explained that a second return spring 20303 connected to the sliding plate 20304 is provided inside the fixed support seat 20302.

[0059] Before grinding, extend the support bracket 20305 until the two sets of magnetic strips 20306 connect, forming a support surface. As the two sets of positioning and cleaning brackets 204 move relative to each other, they clamp the hydraulic breaker's front cylinder from both ends and position it. The support surface rises and retracts synchronously, fully supporting the hydraulic breaker's front cylinder from below.

[0060] like Figure 11 As shown, the rope winding assembly 202 includes two sets of electric telescopic rods 20201 located on the positioning cleaning frame 204; the limiting ring 20202 is located between the two sets of electric telescopic rods 20201 and is opposite to the through hole 205; the rope winding clamp 20203 is driven by motor six and is rotatably set in the limiting ring 20202.

[0061] Before grinding, the two sets of steel ropes 3 are passed through the through-holes 205 on the corresponding side and into the rope clamps 20203. By rotating the rope clamps 20203, the steel ropes 3 are wound around the retaining rings 20202, tightening the ropes 3. During grinding, one steel rope 3 is pulled while the other is relaxed, driving the entire movable grinding unit 4. The movement of the retaining rings 20202 further adjusts the tension of the steel ropes 3.

[0062] Example 2: Based on a hydraulic breaker front cylinder bore grinding device in the embodiment, this embodiment proposes a hydraulic breaker front cylinder bore grinding method, and the specific steps are as follows:

[0063] S1. Connect two steel ropes 3 to the two ends of the mobile grinding unit 4, and then install the mobile grinding unit 4 into the inner hole of the front cylinder body of the hydraulic breaker; pull out the extended support seat 20305 until the two sets of magnetic strips 20306 are connected to form a support plane; place the front cylinder body of the hydraulic breaker equipped with the mobile grinding unit 4 on the support plane;

[0064] S2. Pull out the steel rope 3 and pass the two sets of steel ropes 3 through the through holes 205 on the corresponding sides and insert them into the rope clamps 20203 to fix them;

[0065] S3. The two sets of positioning and cleaning frames 204 move relative to each other, clamping the front cylinder of the hydraulic breaker hammer from both ends and positioning it; the supporting plane rises and shortens synchronously, fully supporting the front cylinder of the hydraulic breaker hammer from the bottom;

[0066] S4. By synchronously rotating multiple sets of adjustment sleeves 40502, the adjustment sleeves 40502, guided by guide rods 40507, drive the moving wheels 40506 to move synchronously horizontally, approaching the wall of the inner hole of the front cylinder of the hydraulic breaker. The laser transmitter and laser receiver cooperate to measure the movement distance of the moving wheels 40506. Based on the size and shape of the inner hole of the front cylinder of the hydraulic breaker, the telescopic end of the telescopic shaft 40504 is electrically extended and retracted to fine-tune the position of each moving wheel 40506. All moving wheels 40506 are completely in contact with the wall of the inner hole of the front cylinder of the hydraulic breaker, and the support column 401, steel rope 3, and the inner hole of the front cylinder of the hydraulic breaker are maintained coaxial.

[0067] S5, adjust the tightness of the steel rope 3; then the adsorption hole of the inner ring adsorbs and cleans the inner hole of the front cylinder of the hydraulic breaker hammer; the attached hole of the outer ring adsorbs and fixes the front cylinder of the hydraulic breaker hammer;

[0068] S6, one steel rope 3 is pulled, and the other steel rope 3 is loosened, driving the mobile grinding part 4 to move as a whole; during the movement, the support column 401, the steel rope 3 and the inner hole of the front cylinder of the hydraulic breaker are kept coaxial;

[0069] S7: The cam 41603 moves synchronously along the circumference as the gear ring 41601 rotates from its origin. At the same time, it rotates as driven by the motor 4, driving the tool holder 41701 to slide in and out of the grinding disk 411, further adjusting the depth of the entire or individual grinding blades 41702. The grinding disk 411 rotates, and the grinding blades 41702 begin to grind the wall of the inner hole.

[0070] S8, the air outlet member 406 blows away the grinding debris adhering to the inner hole wall of the front cylinder body of the hydraulic breaker from the inside; the adsorption holes in the inner ring adsorb and clean the grinding debris adhering to the inner hole of the front cylinder body of the hydraulic breaker from the outside;

[0071] S9. With the movement of the movable grinding part 4, the inner hole of the front cylinder of the hydraulic breaker is ground.

[0072] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A hydraulic breaker front cylinder inner hole grinding device, characterized in that: include: The positioning cleaning part (2) is provided with two groups, one on the left and one on the right, arranged in a mirror image on the base (1), and the two ends of the inner hole of the front cylinder of the hydraulic breaker are positioned by relative translation of the positioning cleaning frame (204); the lower ends of the two groups of positioning cleaning frames (204) are respectively provided with support components (203) for supporting the upper front cylinder of the hydraulic breaker, and the upper ends of the two groups of positioning cleaning frames (204) are respectively provided with through holes (205) for the steel rope (3) to pass through; the positioning cleaning component (201) is arranged around the front end of each group of through holes (205), and through the negative pressure effect, on the one hand, the inner hole wall of the front cylinder of the hydraulic breaker is sucked, and on the other hand, the front cylinder of the hydraulic breaker is adsorbed and positioned; the rope winding component (202) is arranged around the rear end of each group of through holes (205) and is used to fix and pull the steel rope (3); and a movable grinding part (4), wherein the movable grinding part (4) limits the moving track to be coaxial with the inner hole of the front cylinder body of the hydraulic breaker through a movable positioning component (402) located in the middle, and assists the overall movement; the grinding components (403) are arranged on both sides of the movable positioning component (402) along the moving direction, and are driven by a driving component (404) to rotate and grind the inner hole wall of the front cylinder body of the hydraulic breaker, and the grinding depth is adjustable; the support column (401) passes through the movable positioning component (402), the grinding component (403) and the driving component (404); wherein the movable positioning component (402) and the driving component (404) are fixedly arranged on the support column (401); the grinding component (403) is rotatably arranged on the support column (401); and two steel ropes (3) are respectively connected to the two ends of the support column (401); The steel rope (3) cooperates with the corresponding side rope winding assembly (202) to pull the support column (401), the moving positioning assembly (402) and the grinding assembly (403) along the same moving trajectory to move and grind the inner hole of the front cylinder body of the hydraulic breaker; the positioning and cleaning assembly (201) is synchronously positioned and cleaned.

2. The inner hole grinding device of the front cylinder of the hydraulic breaker according to claim 1 is characterized in that: The movable positioning assembly (402) includes a movable positioning plate (410) coaxially penetrated by the support column (401); Multiple groups of movable positioning members (405) and air outlet members (406) are alternately arranged along the circumference of the movable positioning plate (410); The second driving member is arranged on the supporting column (401) and is used to drive the moving ends of the plurality of groups of moving positioning members (405) to synchronously approach or move away from the inner hole wall of the front cylinder body of the hydraulic breaker; The air outlet member (406) supplies air toward between the two groups of grinding assemblies (403).

3. The inner hole grinding device of the front cylinder of the hydraulic breaker according to claim 2 is characterized in that: The movable positioning member (405) includes an adjusting sleeve (40502) which is driven by a second driving member and is rotatably arranged on the movable positioning plate (410); one end of the adjusting rod (40503) is threadedly connected with the adjusting sleeve (40502) with an internal thread by providing an external thread, and the other end of the adjusting rod (40503) extends out of the movable positioning plate (410) and is provided with a telescopic shaft (40504); the positioning frame (40505) is located on the telescopic end of the telescopic shaft (40504); the moving wheel (40506) is rotatably arranged on the top of the positioning frame (40505) as the moving end; the head end of the guide rod (40507) which slides through the movable positioning plate (410) is connected to the outer side of the positioning frame (40505); The fixed plate (40508) is fixed on the movable positioning plate (410) and is movably penetrated by the guide rod (40507). A laser emitter is arranged on the fixed plate (40508); The movable plate (40509) is located at the tail end of the guide rod (40507), and a laser receiver is arranged on the movable plate (40509).

4. The inner hole grinding device of the front cylinder of the hydraulic breaker according to claim 2 is characterized in that: The air outlet member (406) comprises an air outlet tube (40601) which is arranged to penetrate the movable positioning plate (410); the air outlet tube (40601) has a built-in filter element, the tail of which is located in the movable positioning plate (410), and a negative pressure fan (40604) is arranged, and an air outlet seat (40602) is arranged at the head.

5. The inner hole grinding device of the front cylinder of the hydraulic breaker according to claim 1 is characterized in that: The grinding assembly (403) includes a grinding disc (411) which is coaxially penetrated by the support column (401) and driven to rotate by a driving member (404); The adjusting member (416) is arranged at the center of the grinding disc (411); a plurality of grinding members (417) are arranged along the circumference of the grinding disc (411), and the grinding depth is adjusted by the adjusting member (416).

6. The inner hole grinding device of the front cylinder of the hydraulic breaker according to claim 5 is characterized in that: The adjusting member (416) comprises a toothed ring (41601) which rotates synchronously with the origin and is arranged in two layers; a plurality of groups of cams (41603) are arranged at intervals and are rotatably arranged between the two layers of toothed rings (41601); The double-layer gear ring (41601) is coaxially sleeved on the outer periphery of the support column (401); The grinding member (417) is matched with the rotating cam (41603) in a one-to-one correspondence to synchronously adjust the grinding end position.

7. The inner hole grinding device of the front cylinder of the hydraulic breaker according to claim 6 is characterized in that: The grinding member (417) includes a grinding knife (41702) that slides in and out of the grinding disc (411); the head end of the grinding knife (41702) is the grinding end, and the tail end is provided with a knife holder (41701); the knife holder (41701) and the cam (41603) are slidably matched; the guide column (41703) is located on both sides of the grinding knife (41702), one end of which is connected to the knife holder (41701), and the other end of which slides out of the grinding disc (411) and is connected to the monitoring seat (41704); The distance sensor is arranged on the monitoring base (41704).

8. The inner hole grinding device of the front cylinder of the hydraulic breaker according to claim 1, characterized in that: The bottoms of the two groups of positioning cleaning frames (204) are connected to the lead screw by a threaded connection to achieve relative movement, and the tops of the two groups of positioning cleaning frames (204) are provided with cleaning grooves (20401) around the through holes (205); The positioning cleaning component (201) comprises an annular filter screen (20102) located in the cleaning tank (20401); an air pump (20103) connected to the bottom of the cleaning tank (20401) through a pipeline; and an annular adsorption screen (20101) covering the notch of the cleaning tank (20401); A plurality of circles of adsorption holes are arranged on the annular adsorption net (20101); the adsorption holes of the inner circle are opposite to the inner holes of the front cylinder body of the hydraulic breaker; and the attachment holes of the outer circle are opposite to the front cylinder body of the hydraulic breaker.

9. The inner hole grinding device of the front cylinder of the hydraulic breaker according to claim 8, characterized in that: The support assembly (203) comprises a lifting frame (20301) which is able to move up and down by means of a threaded connection with a lead screw; a fixed support seat (20302) is arranged on the lifting frame (20301), one side of which is open and a sliding plate (20304) is arranged inside; an extended support seat (20305) is located on the open side of the fixed support seat (20302), one end of which is connected to the sliding plate (20304) by means of a connecting rod, and the other end of which is provided with a magnetic attraction strip (20306).

10. The inner hole grinding device of the front cylinder of the hydraulic breaker according to claim 1, characterized in that: The rope winding assembly (202) comprises two groups of electric telescopic rods (20201) located on the positioning cleaning frame (204); a limiting ring (20202) is located between the two groups of electric telescopic rods (20201) and is opposite to the through hole (205); and a rope winding clamp (20203) is driven by motor 6 and is rotatably arranged in the limiting ring (20202).

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