A grinding device for the inner hole of the front cylinder body of a hydraulic breaker

Abstract

The present invention relates to the field of hydraulic breaker processing, and particularly to a grinding device for the inner hole of the front cylinder body of a hydraulic breaker. It includes a base, a positioning and cleaning part, a steel rope, and a moving grinding part. Two groups of positioning and cleaning parts are provided, arranged in a mirror image, one on the left and one on the right, on the base; at the lower ends of the opposite ends of the two groups of positioning and cleaning frames, support components for supporting the front cylinder body of the upper hydraulic breaker are respectively provided, and through holes for the steel rope to pass through are respectively provided at the upper ends of the opposite ends of the two groups of positioning and cleaning frames; the positioning and cleaning components are arranged around the front ends of each through hole. The moving grinding part is limited to move while assisting the overall movement; the grinding components are arranged on both sides of the moving positioning component along the moving direction, and rotate and grind the inner hole wall of the front cylinder body of the hydraulic breaker, and the grinding depth is adjustable. Through the cooperation of the positioning and cleaning part, the steel rope, and the moving grinding part, the present invention synchronously grinds during the moving process, and the moving track is stable, and the grinding depth is adjustable, thereby ensuring the grinding accuracy and efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic breaker processing, and particularly to a grinding device for the inner hole of the front cylinder body of a hydraulic breaker. Background Art

[0002] The main function of the inner hole of the front cylinder body of a hydraulic breaker is to accommodate the piston and provide a stable movement track to ensure that the piston can reciprocate along a predetermined trajectory during the breaking process. At the same time, the inner hole also plays a sealing role with the piston to prevent hydraulic oil leakage, thereby maintaining the working pressure and impact force of the breaker. Through grinding, burrs, scratches and other defects on the surface of the inner hole of the front cylinder body can be removed, improving the surface finish and flatness. This helps to reduce the frictional resistance and wear of the piston during movement, and extend the service life of the front cylinder body and the piston. Grinding accuracy is an index to measure the dimensional accuracy and shape accuracy of the inner hole after grinding.

[0003] A Chinese patent document with the authorization announcement number CN117066996B proposes a grinding positioning device for the inner hole of the front cylinder body of a hydraulic breaker, including a base. Two columns are fixedly installed at the upper end of the base, and a hydraulic chuck and a lead screw are installed on the upper ends of the two columns. A clamping plate is connected to the inner side of the hydraulic chuck, and several jaws are connected to the middle of the hydraulic chuck and the clamping plate. 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 the above device, the threaded rod extends into the inner hole from both ends of the front cylinder body of the hydraulic breaker for connection, and the grinding bracket moves along the threaded rod for grinding. There are two problems in this grinding process: 1. The threaded rod is a rigid structure and is only connected through the ends, which is easy to loosen at the connection, resulting in misalignment of the two threaded rods, affecting the grinding trajectory and reducing the grinding accuracy. 2. A lot of debris will be generated during the grinding process, and the accumulation of these debris on the threaded rod will affect the smooth movement of the grinding bracket, thereby affecting the grinding efficiency. Summary of the Invention

[0005] Aiming at the problems in the background art, a grinding device for the inner hole of the front cylinder body of a hydraulic breaker is proposed. By setting up a positioning and cleaning part, a steel wire rope and a moving grinding part to cooperate, synchronous grinding is realized during the movement, and the movement trajectory is stable, and the grinding depth is adjustable, thereby ensuring the grinding accuracy and efficiency.

[0006] The present invention proposes a grinding device for the inner hole of the front cylinder body of a hydraulic breaker, including a base, a positioning and cleaning part, a steel wire rope and a moving grinding part.

[0007] There are two sets of positioning and cleaning parts, which are arranged in a mirror image, one on the left and the other on the right, on the base. The inner holes at both ends of the front cylinder of the hydraulic breaker are positioned by the relative translation of the positioning and cleaning frames; at the lower ends of the relative ends of the two sets of positioning and cleaning frames, support components for supporting the upper front cylinder of the hydraulic breaker are respectively provided, and through holes for the steel ropes to pass through are respectively provided at the upper ends of the relative ends of the two sets of positioning and cleaning frames; the positioning and cleaning components are arranged around the front end of each through hole. Through the negative pressure effect, on the one hand, the inner hole wall of the front cylinder of the hydraulic breaker during grinding is vacuumed, and on the other hand, the front cylinder of the hydraulic breaker during grinding is adsorbed and positioned; the rope winding components are arranged around the rear end of each through hole for fixing and pulling the steel ropes.

[0008] The mobile grinding part is limited by the mobile positioning component in the middle to move along a trajectory coaxial with the inner hole of the front cylinder of the hydraulic breaker, and at the same time assists in the overall movement; the grinding components are arranged on both sides of the mobile positioning component along the moving direction, and are driven by the first driving part to rotate and grind the inner hole wall of the front cylinder of the hydraulic breaker, and the grinding depth is adjustable; the support columns penetrate through the mobile positioning component, the grinding components and the first driving part; among them, the mobile positioning component and the first driving part are fixedly arranged on the support columns; the grinding components are rotatably arranged on the support columns; two steel ropes are respectively connected to both ends of the support columns.

[0009] Preferably, through the cooperation of the steel ropes and the corresponding side rope winding components, the support columns, the mobile positioning components and the grinding components are pulled 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 components perform synchronous positioning and cleaning.

[0010] Preferably, the mobile positioning component includes a mobile positioning disk coaxially penetrated by the support column; multiple groups of mobile positioning parts and air outlet parts are alternately arranged along the circumference of the mobile positioning disk; the second driving part is arranged on the support column for driving the mobile ends of multiple groups of mobile positioning parts to approach or move away from the inner hole wall of the front cylinder of the hydraulic breaker synchronously; the air outlet part blows air towards the space between the two sets of grinding components.

[0011] Preferably, the mobile positioning part includes an adjusting sleeve rotatably arranged on the mobile positioning disk driven by the second driving part; one end of the adjusting rod is threadedly connected with the adjusting sleeve with internal threads by setting external threads, and the other end of the adjusting rod extends out of the mobile positioning disk and is provided with a telescopic shaft; the positioning frame is located at the telescopic end of the telescopic shaft; the mobile wheel is used as the mobile end and is rotatably arranged on the top of the positioning frame; the head end of the guide rod slidably penetrating through the mobile positioning disk is connected to the outside of the positioning frame; the fixing plate is fixed on the mobile positioning disk and is movably penetrated by the guide rod, and a laser emitter is arranged on the fixing plate; the mobile plate is located at the tail end of the guide rod, and a laser receiver is arranged on the mobile plate.

[0012] Preferably, the air outlet part includes an air outlet cylinder penetrating through the mobile positioning disk; a filter element is arranged inside the air outlet cylinder, the tail part is located inside the mobile positioning disk and is provided with a negative pressure fan, and the head part is provided with an air outlet seat.

[0013] Preferably, the grinding assembly includes a grinding disc coaxially penetrated by a support column and driven to rotate by a first driving member; an adjusting member is arranged at the center of the grinding disc; a plurality of 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 toothed ring that rotates synchronously with the origin and is arranged in a double layer; a plurality of groups of cams are arranged at intervals and rotatably arranged between the double-layer toothed rings; the double-layer toothed ring is coaxially sleeved on the outer periphery of the support column; the grinding members are synchronously adjusted in the position of the grinding end by corresponding cooperation with the rotating cams one by one.

[0015] Preferably, the grinding member includes a grinding tool that slides in and out of the grinding disc; the head end of the grinding tool is the grinding end, and a tool holder is arranged at the tail end; the tool holder is slidably matched with the cam; guide columns are located on both sides of the grinding tool, one end is connected to the tool holder, and the other end slides out of the grinding disc and is connected to the monitoring seat; a distance sensor is arranged on the monitoring seat.

[0016] Preferably, the bottoms of the two groups of positioning and cleaning frames are relatively moved by being threadedly connected to a first lead screw; cleaning grooves are arranged around the through hole at the tops of the two groups of positioning and cleaning frames; the positioning and cleaning assembly includes an annular filter screen located in the cleaning groove; an air extraction pump is connected to the bottom of the cleaning groove through a pipeline; an annular adsorption net covers the notch of the cleaning groove; a plurality of circles of adsorption holes are arranged on the annular adsorption net; the adsorption holes in the inner circle are opposite to the inner hole of the front cylinder body of the hydraulic breaker; the adsorption holes in the outer circle are opposite to the front cylinder body of the hydraulic breaker.

[0017] Preferably, the support assembly includes a lifting frame that moves up and down by being threadedly connected to a second lead screw; a fixed support seat is arranged on the lifting frame, with an opening on one side and a sliding plate arranged inside; an extended support seat is located on the opening side of the fixed support seat, one end 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 groups of electric telescopic rods located on the positioning and cleaning frame; a limiting ring is located between the two groups of electric telescopic rods and is opposite to the position of the through hole; the rope winding clip is driven by a sixth motor and is rotatably arranged in the limiting ring.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects: The positioning and cleaning part, the steel rope and the mobile grinding part cooperate. Two sets of mirror-arranged positioning and cleaning parts position the two ends of the front cylinder body of the hydraulic breaker from left and right. The positioning and cleaning assembly on the positioning and cleaning part, through the negative pressure effect, on the one hand, sucks the inner hole wall of the front cylinder body of the hydraulic breaker during grinding, and on the other hand, adsorbs and positions the front cylinder body of the hydraulic breaker during grinding. The rope winding assembly on the positioning and cleaning part fixes and pulls the steel rope. The mobile positioning assembly and the grinding assemblies and driving parts on both sides are connected in series through the support column to form an integral mobile grinding part. During grinding, the rope winding assembly controls one steel rope to pull and the other steel rope to relax, driving the mobile grinding part to move. During the movement, the mobile positioning assembly sets the mobile wheels close to the inner hole wall of the front cylinder body of the hydraulic breaker to maintain the coaxiality of the support column, the steel rope and the inner hole of the front cylinder body of the hydraulic breaker while moving. The grinding assembly uses the cam to move and rotate along the circumference to further adjust the depth of the overall or single grinding tool. Through the rotation of the grinding disc, the grinding tool grinds the inner hole wall. Finally, synchronous grinding is realized during the movement, and the movement trajectory is stable, and the grinding depth is adjustable, thereby ensuring the grinding accuracy and efficiency. In addition, the air outlet part blows and cleans the grinding debris adhering to the inner hole wall of the front cylinder body of the hydraulic breaker from the inside; the adsorption holes on 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, forming a mutually cooperating cleaning network. Finally, the influence of metal debris on the grinding effect is reduced, and the grinding effect is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic structural diagram of the inner hole grinding device of the front cylinder body of the hydraulic breaker in the present invention (view angle one);

[0021] Figure 2 Schematic structural diagram of the inner hole grinding device of the front cylinder body of the hydraulic breaker in the present invention (view angle two);

[0022] Figure 3 Schematic exploded view of the mobile grinding part in the present invention;

[0023] Figure 4 Schematic structural diagram of the positioning and cleaning part in the present invention;

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

[0025] Figure 6 Schematic structural diagram of the mobile positioning part in the present invention;

[0026] Figure 7 Schematic structural diagram of the air outlet part in the present invention;

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

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

[0029] Figure 10 Partial exploded view of the positioning and cleaning part in the present invention;

[0030] Figure 11 Schematic diagram of the structure of the rope winding component in the present invention.

[0031] Reference numerals: 1, base; 2, positioning and cleaning part; 201, positioning and cleaning assembly; 20101, annular adsorption net; 20102, annular filter net; 20103, air extraction pump; 202, rope winding component; 20201, electric telescopic rod; 20202, limit ring; 20203, rope winding clip; 203, support component; 20301, lifting frame; 20302, fixed support base; 20303, second reset spring; 20304, sliding plate; 20305, extended support base; 20306, magnetic strip; 204, positioning and cleaning frame; 20401, cleaning groove; 20402, second guide groove; 205, through hole; 3, steel rope; 4, moving grinding part; 401, support column; 402, moving positioning component; 403, grinding component; 404, first driving part; 405, moving positioning part; 40501, second helical gear; 40502, adjusting sleeve; 40503, adjusting rod; 40504, telescopic shaft; 40505, positioning frame; 40506, moving wheel; 40507, guide rod; 40508, fixing plate; 40509, moving plate; 40510, buffer spring; 406, air outlet part; 40601, air outlet cylinder; 40602, air outlet seat; 40603, slag blocking net; 40604, negative pressure fan; 407, second gear; 408, first helical gear; 409, first gear; 410, moving positioning disk; 411, grinding disk; 412, installation box; 413, driving sleeve; 414, third gear; 415, fourth gear; 416, adjusting part; 41601, toothed ring; 41602, fifth gear; 41603, cam; 417, grinding part; 41701, tool rest; 41702, grinding tool; 41703, guide post; 41704, monitoring seat; 41705, first reset spring. Detailed implementation manners

[0032] Example 1, as Figures 1 - 2 shown, a hydraulic breaker front cylinder inner hole grinding device proposed by the present invention includes a base 1, a positioning and cleaning part 2, a steel rope 3 and a moving grinding part 4.

[0033] As Figure 4As shown in the figure, two sets of positioning and cleaning parts 2 are provided, which are arranged in a mirror image, one on the left and one on the right, on the base 1. The inner holes at both ends of the front cylinder body of the hydraulic breaker are positioned by the relative translation of the positioning and cleaning frames 204; at the lower ends of the relative ends of the two sets of positioning and cleaning frames 204, support components 203 for supporting the upper front cylinder body of the hydraulic breaker are respectively provided; at the upper ends of the relative ends of the two sets of positioning and cleaning frames 204, through holes 205 for the steel ropes 3 to pass through are respectively provided; the positioning and cleaning components 201 are arranged around the front ends of each group of through holes 205. Through the negative pressure effect, on the one hand, the inner hole wall of the front cylinder body of the hydraulic breaker during grinding is sucked, and on the other hand, the front cylinder body of the hydraulic breaker during grinding is adsorbed and positioned; the rope winding components 202 are arranged around the rear ends of each group of through holes 205 for fixing and pulling the steel ropes 3.

[0034] As Figure 3 shown in the figure, the mobile grinding part 4 is limited to move along a trajectory coaxial with the inner hole of the front cylinder body of the hydraulic breaker through the mobile positioning component 402 located in the middle, while assisting the overall movement; the grinding components 403 are arranged on both sides of the mobile positioning component 402 along the movement direction, and the inner hole wall of the front cylinder body of the hydraulic breaker is rotated and ground by driving part one 404, and the grinding depth is adjustable; the support column 401 penetrates through the mobile positioning component 402, the grinding component 403 and the driving part one 404; among them, the mobile positioning component 402 and the driving part one 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 both ends of the support column 401.

[0035] The support column 401 connects the mobile positioning component 402 and the grinding components 403 and the driving part one 404 on both sides in series to form an integral mobile grinding part 4. During operation, by pulling one steel rope 3 and relaxing the other steel rope 3, the mobile grinding part 4 is driven to move. During the movement, the mobile positioning component 402 positions the whole, and the grinding component 403 grinds the inner hole wall during positioning and movement.

[0036] As Figure 5 shown in the figure, the mobile positioning component 402 includes a mobile positioning disk 410 coaxially penetrated by the support column 401; multiple groups of mobile positioning parts 405 and air outlet parts 406 are alternately arranged along the circumference of the mobile positioning disk 410; the driving part two is arranged on the support column 401 for driving the mobile ends of multiple groups of mobile positioning parts 405 to approach or move away from the inner hole wall of the front cylinder body of the hydraulic breaker synchronously; the air outlet part 406 blows air towards the space between the two sets of grinding components 403.

[0037] By setting the mobile ends of multiple groups of mobile positioning parts 405 to approach the inner hole wall of the front cylinder body of the hydraulic breaker synchronously, the coaxiality of the support column 401, the steel ropes 3 and the inner hole of the front cylinder body of the hydraulic breaker can be maintained during movement, so that the movement trajectory of the entire mobile grinding part 4 coincides with the central axis of the inner hole of the front cylinder body of the hydraulic breaker.

[0038] like Figure 6 As shown, 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 disk 410; one end of the adjusting rod 40503 is threadedly connected with the adjusting sleeve 40502 with an internal thread by setting an external thread, and the other end of the adjusting 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 is used as the moving end and is rotatably arranged on the top of the positioning frame 40505; the head end of the guide rod 40507 which 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 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.

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

[0040] It needs to be further explained that driving member 2 includes a mounting shaft sleeved on support column 401; bevel gear 1 408 and gear 1 409 are coaxially connected to the mounting shaft; motor 1 located on one side of the mounting shaft drives gear 2 407 to rotate; gear 2 407 is meshingly connected with gear 1 409; bevel gear 2 40501 is coaxially sleeved on the bottom of adjustment sleeve 40502 in a one-to-one manner; and multiple groups of bevel gear 2 40501 are meshingly connected with bevel gear 1 408 in sequence.

[0041] During grinding, multiple groups of adjustment sleeves 40502 are rotated synchronously through the gear transmission structure of the second driving member. Under the guidance of the guide rod 40507, the adjustment sleeve 40502 drives the moving wheel 40506 to move horizontally synchronously and approach the inner hole wall of the front cylinder body of the hydraulic breaker. The laser transmitter and the laser receiver cooperate to collect the movement distance of the moving wheel 40506. In combination with the size and shape of the inner hole of the front cylinder body of the hydraulic breaker, the telescopic end of the telescopic shaft 40504 is powered on and retracted to fine-tune the position of a single moving wheel 40506. During the processing, all the moving wheels 40506 are completely attached to the inner hole wall of the front cylinder body of the hydraulic breaker, and the support column 401, the steel rope 3 and the inner hole of the front cylinder body of the hydraulic breaker are kept coaxial.

[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 a negative pressure fan 40604 is provided, and an air outlet seat 40602 is provided at the head.

[0043] It should be further noted that a slag retaining net 40603 is provided at the air outlet of the air outlet seat 40602.

[0044] By providing the air outlet member 406, the air in the moving positioning disc 410 is led out and sent to the inner hole wall of the front cylinder body of the hydraulic breaker. On the one hand, the dust in the moving positioning disc 410 is adsorbed by negative pressure for automatic cleaning, and on the other hand, the grinding debris adhering to the inner hole wall of the front cylinder body of the hydraulic breaker is cleaned.

[0045] As Figure 8 shown, the grinding assembly 403 includes a grinding disc 411 coaxially penetrated by a support column 401 and driven to rotate by a first driving member 404; an adjusting member 416 is arranged at the center of the grinding disc 411; a plurality of 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 noted that the first driving member 404 includes a driving sleeve 413 rotatably sleeved on the support column 401 and simultaneously penetrating and connecting the grinding disc 411; a third gear 414 is sleeved on the driving sleeve 413; an installation box 412 is penetrated and fixed by the support column 401 and covers the outside of the third gear 414; a second motor is located on the installation box 412 and drives the fourth gear 415 to rotate; the fourth gear 415 is meshed with the third gear 414.

[0047] Through the gear transmission structure of the first driving member 404, the grinding disc 411 is driven to rotate while translating. The grinding member 417 completes the grinding of the inner hole wall of the front cylinder body of the hydraulic breaker during the rotation process. The adjusting member 416 adjusts the grinding depth.

[0048] As Figure 9 shown, the adjusting member 416 includes a tooth ring 41601 that rotates synchronously around the origin and is arranged in two layers; a plurality of groups of cams 41603 are arranged at intervals and rotatably between the two-layer tooth ring 41601; the two-layer tooth ring 41601 is coaxially sleeved on the outer periphery of the support column 401; the grinding member 417 synchronously adjusts the position of the grinding end through corresponding cooperation with the rotating cams 41603.

[0049] It should be further noted that a third motor is arranged inside the grinding disc 411; the fifth gear 41602 is driven to rotate by the third motor and is simultaneously meshed with the tooth ring 41601 to drive the two-layer tooth ring 41601 to rotate around the origin.

[0050] It should be further noted that a fourth motor is arranged on the tooth ring 41601; the cam 41603 is driven to rotate independently by the fourth motor.

[0051] The cam 41603 has two rotation modes. One is to move synchronously along the circumference with the origin rotation of the tooth ring 41601. The other is to rotate self-driven by the fourth motor.

[0052] As Figure 9 shown, the grinding part 417 includes a grinding tool 41702 that slides in and out of the grinding disc 411; the head end of the grinding tool 41702 is the grinding end, and a tool holder 41701 is arranged at the tail end; the tool holder 41701 is slidably engaged with the cam 41603; the guide posts 41703 are located on both sides of the grinding tool 41702, one end is connected to the tool holder 41701, and the other end slides out of the grinding disc 411 and is connected to the monitoring seat 41704. The distance sensor is arranged on the monitoring seat 41704.

[0053] It should be further noted that a first reset spring 41705 is sleeved on the guide post 41703, one end is connected to the tool holder 41701, and the other end is connected to the inner wall of the grinding disc 411.

[0054] When the cam 41603 moves synchronously and rotates, it can drive the tool holder 41701 to slide in and out of the grinding disc 411. The grinding tool 41702 moves. The distance sensor monitors the distance between the grinding tool 41702 and the inner hole wall of the front cylinder body of the hydraulic breaker, and the distance data can be used as the basis for adjusting the grinding depth. It can be synchronous adjustment or local adjustment to meet the grinding requirements.

[0055] As Figure 10 shown, a first guide groove is arranged on the base 1; a first lead screw driven by a fifth motor is arranged in the first guide groove; the bottoms of the two groups of positioning and cleaning frames 204 are threadedly connected to the first lead screw to realize relative movement, and the tops of the two groups of positioning and cleaning frames 204 are provided with cleaning grooves 20401 around the through hole 205. The positioning and cleaning assembly 201 includes an annular filter screen 20102 located in the cleaning groove 20401; the air extraction pump 20103 is communicated with the bottom of the cleaning groove 20401 through a pipeline; an annular adsorption net 20101 covers the notch of the cleaning groove 20401. A plurality of adsorption holes are arranged on the annular adsorption net 20101; the adsorption holes in the inner ring are opposite to the inner hole of the front cylinder body of the hydraulic breaker; the adsorption holes in the outer ring are opposite to the front cylinder body of the hydraulic breaker.

[0056] Before grinding, the front cylinder body of the hydraulic breaker is clamped and positioned from both ends by the relative movement of the two groups of positioning and cleaning frames 204. When grinding, the air extraction pump 20103 works, and the adsorption holes in the inner ring adsorb and clean the debris in the inner hole of the front cylinder body of the hydraulic breaker; the adsorption holes in the outer ring adsorb and fix the front cylinder body of the hydraulic breaker.

[0057] As Figure 10As shown in the figure, two groups of positioning and cleaning racks 204 are provided with second guiding grooves 20402 located below the cleaning tank 20401; a second lead screw rotated by a sixth motor is rotatably arranged in the second guiding groove 20402; the supporting assembly 203 includes a lifting frame 20301 that moves up and down by being threadedly connected to the second lead screw; a fixed supporting seat 20302 is arranged on the lifting frame 20301, with one side open, and a sliding plate 20304 is arranged inside; an extended supporting seat 20305 is located on the open side of the fixed supporting seat 20302, one end is connected to the sliding plate 20304 through a connecting rod, and a magnetic strip 20306 is arranged at the other end.

[0058] It should be further noted that a second return spring 20303 connecting the sliding plate 20304 is arranged inside the fixed supporting seat 20302.

[0059] Before grinding, pull out the extended supporting seat 20305 until the two groups of magnetic strips 20306 are connected to form a supporting plane. As the two groups of positioning and cleaning racks 204 move relative to each other, the front cylinder body of the hydraulic breaker is clamped and positioned from both ends. The supporting plane rises and shortens synchronously to fully support the front cylinder body of the hydraulic breaker from the bottom.

[0060] As Figure 11 shown in the figure, the rope winding assembly 202 includes two groups of electric telescopic rods 20201 located on the positioning and cleaning racks 204; a limiting ring 20202 is located between the two groups of electric telescopic rods 20201 and is opposite to the through hole 205 in position; a rope winding clip 20203 is driven by a sixth motor and is rotatably arranged in the limiting ring 20202.

[0061] Before grinding, pass the two steel ropes 3 through the corresponding through holes 205 on each side and extend them into the rope winding clip 20203. By rotating the rope winding clip 20203, wind the steel ropes 3 in the limiting ring 20202 to tighten the steel ropes 3. During the grinding process, one steel rope 3 pulls and the other steel rope 3 relaxes, which can drive the overall movement of the moving grinding part 4. The movement of the limiting ring 20202 can further adjust the tightness of the steel ropes 3.

[0062] Embodiment 2, based on the inner hole grinding device of the front cylinder body of a hydraulic breaker in the embodiment, a method for grinding the inner hole of the front cylinder body of a hydraulic breaker is proposed in this embodiment, and the specific steps are as follows:

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

[0064] S2. Pull out the steel rope 3, and pass the two groups of steel ropes 3 through the through holes 205 on the corresponding sides respectively, and extend them into the rope winding clips 20203 for fixation;

[0065] S3. The two groups of positioning and cleaning frames 204 move relatively, clamp and position the front cylinder body of the hydraulic breaker from both ends; the supporting planes rise and shorten synchronously, and fully support the front cylinder body of the hydraulic breaker from the bottom;

[0066] S4. Through the synchronous rotation of multiple groups of adjusting sleeves 40502, under the guidance of the guide rods 40507, the adjusting sleeves 40502 drive the moving wheels 40506 to move horizontally synchronously and approach the inner hole wall of the front cylinder body of the hydraulic breaker; the laser emitter and the laser receiver cooperate to collect the moving distance of the moving wheels 40506; in combination with the size and shape of the inner hole of the front cylinder body of the hydraulic breaker, the telescopic end of the telescopic shaft 40504 is energized to expand and contract, and the position of a single moving wheel 40506 is finely adjusted; all the moving wheels 40506 are completely attached to the inner hole wall of the front cylinder body of the hydraulic breaker, and the support columns 401, the steel ropes 3 and the inner hole of the front cylinder body of the hydraulic breaker are maintained coaxially;

[0067] S5. Adjust the tightness of the steel rope 3; then the adsorption holes on the inner ring adsorb and clean the inner hole of the front cylinder body of the hydraulic breaker; the attachment holes on the outer ring adsorb and fix the front cylinder body of the hydraulic breaker;

[0068] S6. One steel rope 3 pulls, and the other steel rope 3 relaxes, driving the overall movement of the moving grinding part 4; during the movement, the support columns 401, the steel ropes 3 and the inner hole of the front cylinder body of the hydraulic breaker are maintained coaxially;

[0069] S7. The cam 41603 moves synchronously along the circumference as the origin of the toothed ring 41601 rotates, and at the same time rotates self - driven by the fourth motor, driving the tool rest 41701 to slide in and out of the grinding disc 411, further adjusting the depth of the overall or single grinding tool 41702; the grinding disc 411 rotates, and the grinding tool 41702 starts to grind the inner hole wall;

[0070] S8. The air outlet part 406 blows and cleans the grinding debris adhering to the inner hole wall of the front cylinder body of the hydraulic breaker from the inside; the adsorption holes on 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. As the moving grinding part 4 moves, the grinding of the inner hole of the front cylinder body of the hydraulic breaker is completed.

[0072] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to this. Within the scope of knowledge possessed by those skilled in the art to which it pertains, various changes can be made without departing from the gist of the present invention.

Claims

1. A grinding device for the inner hole of the front cylinder body of a hydraulic breaker, characterized in that, Including: Positioning and cleaning parts (2), two groups of positioning and cleaning parts (2) are provided, arranged in a left - right mirror image on the base (1), and the inner hole ends of the front cylinder of the hydraulic breaker are positioned by the relative translation of the positioning and cleaning frames (204); at the lower ends of the relative ends of the two groups of positioning and cleaning frames (204), support components (203) for supporting the upper front cylinder of the hydraulic breaker are respectively provided, and through holes (205) for the steel ropes (3) to pass through are respectively provided at the upper ends of the relative ends of the two groups of positioning and cleaning frames (204); the positioning and cleaning components (201) are arranged around the front ends of each group of through holes (205), and through the negative pressure effect, 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 components (202) are arranged around the rear ends of each group of through holes (205) for fixing and pulling the steel ropes (3). And a mobile grinding part (4), the mobile grinding part (4) limits its moving trajectory to be coaxial with the inner hole of the front cylinder of the hydraulic breaker through the mobile positioning component (402) located in the middle, and at the same time assists in the overall movement; the grinding components (403) are arranged on both sides of the mobile positioning component (402) along the moving direction, and rotate and grind the inner hole wall of the front cylinder of the hydraulic breaker through the driving part one (404), and the grinding depth is adjustable; the support columns (401) penetrate through the mobile positioning component (402), the grinding components (403) and the driving part one (404); among them, the mobile positioning component (402) and the driving part one (404) are fixedly arranged on the support column (401); the grinding components (403) are rotatably arranged on the support column (401); two steel ropes (3) are respectively connected to both ends of the support column (401). Through the cooperation of the steel ropes (3) with the corresponding side rope winding components (202), the support column (401), the mobile positioning component (402) and the grinding components (403) are pulled to move and grind in the inner hole of the front cylinder of the hydraulic breaker along the same moving trajectory; the positioning and cleaning components (201) perform synchronous positioning and cleaning.

2. The inner hole grinding device of the front cylinder body of the hydraulic breaker according to claim 1, wherein, The mobile positioning component (402) includes a mobile positioning disk (410) coaxially penetrated by the support column (401). Multiple groups of mobile positioning parts (405) and air outlet parts (406) are alternately arranged along the circumference of the mobile positioning disk (410). The driving part two is arranged on the support column (401) for driving the mobile ends of multiple groups of mobile positioning parts (405) to approach or move away from the inner hole wall of the front cylinder of the hydraulic breaker synchronously. The air outlet parts (406) blow air towards the space between the two groups of grinding components (403).

3. The internal hole grinding device for the front cylinder body of a hydraulic breaker according to claim 2, characterized in that, The moving positioning member (405) includes an adjusting sleeve (40502) that is driven by a second driving member and rotatably arranged on the moving positioning disk (410); one end of the adjusting rod (40503) is threadedly connected to the adjusting sleeve (40502) with internal threads by providing external threads, and the other end of the adjusting rod (40503) extends out of the moving positioning disk (410) and is provided with a telescopic shaft (40504); the positioning frame (40505) is located at the telescopic end of the telescopic shaft (40504); the moving wheel (40506) is used 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 slidably penetrates the moving positioning disk (410) is connected to the outside of the positioning frame (40505); The fixing plate (40508) is fixed on the moving positioning disk (410), is movably penetrated by the guide rod (40507), and a laser emitter is arranged on the fixing plate (40508); The moving plate (40509) is located at the tail end of the guide rod (40507), and a laser receiver is arranged on the moving plate (40509).

4. The inner hole grinding device of the front cylinder body of the hydraulic breaker according to claim 2, characterized in that, The air outlet member (406) includes an air outlet cylinder (40601) that penetrates the moving positioning disk (410); a filter element is arranged inside the air outlet cylinder (40601), the tail part is located inside the moving positioning disk (410), and a negative pressure fan (40604) is arranged, and an air outlet seat (40602) is arranged at the head part.

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

6. The internal hole grinding device for the front cylinder body of a hydraulic breaker according to claim 5, characterized in that, The adjusting member (416) includes a toothed ring (41601) that rotates synchronously with the origin and is arranged in a double layer; multiple groups of cams (41603) are arranged at intervals and rotatably between the double-layer toothed ring (41601); The double-layer arranged toothed ring (41601) is coaxially sleeved on the outer periphery of the support column (401); The grinding members (417) synchronously adjust the positions of the grinding ends by corresponding to and cooperating with the rotating cams (41603) one by one.

7. The inner hole grinding device for the front cylinder body of a hydraulic breaker according to claim 6, wherein The grinding member (417) includes a grinding tool (41702) that slides in and out of the grinding disk (411); the head end of the grinding tool (41702) is the grinding end, and a tool holder (41701) is arranged at the tail end; the tool holder (41701) is slidably matched with the cam (41603); guide columns (41703) are located on both sides of the grinding tool (41702), one end is connected to the tool holder (41701), and the other end slides out of the grinding disk (411) and is connected to the monitoring seat (41704); A distance sensor is arranged on the monitoring seat (41704).

8. The internal hole grinding device for the front cylinder body of a hydraulic breaker according to claim 1, characterized in that, The bottoms of the two groups of positioning and cleaning frames (204) are relatively moved by being threadedly connected to the first lead screw, and cleaning grooves (20401) are arranged at the tops of the two groups of positioning and cleaning frames (204) around the through hole (205); The positioning and cleaning assembly (201) includes an annular filter screen (20102) located in the cleaning tank (20401); an air extraction pump (20103) is connected to the bottom of the cleaning tank (20401) through a pipeline; an annular adsorption net (20101) covers the mouth of the cleaning tank (20401); Multiple circles of adsorption holes are provided on the annular adsorption net (20101); the adsorption holes in the inner circle are opposite to the inner hole of the front cylinder body of the hydraulic breaker; the adsorption holes in the outer circle are opposite to the front cylinder body of the hydraulic breaker.

9. The inner hole grinding device of the front cylinder body of a hydraulic breaker according to claim 8, characterized in that, The support assembly (203) includes a lifting frame (20301) that moves up and down by threadedly connecting a second lead screw; a fixed support base (20302) is arranged on the lifting frame (20301), with one side open and a sliding plate (20304) arranged inside; an extended support base (20305) is located on the open side of the fixed support base (20302), one end is connected to the sliding plate (20304) through a connecting rod, and the other end is provided with a magnetic strip (20306).

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

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