Hydraulic breaking hammer drill rod assembling structure

Abstract

The utility model belongs to the field of quartering hammers, and particularly relates to a hydraulic quartering hammer drill rod assembling structure, a side mounting frame is mounted on a side clamping plate, a hydraulic cylinder drives a connecting frame to get close to or get away from a lower cylinder body, and when the connecting frame gets close to the lower cylinder body, an extrusion block acts on a clamping block to correct the angle of a flat pin clamping area of a drill rod; the position correspondence of the flat pin clamping area and the flat pin groove in the assembling direction is completed through correction, so that efficient positioning operation can be ensured, and follow-up assembling operation is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of breaking hammer, concretely is a kind of hydraulic breaking hammer drill rod assembly structure. BACKGROUND

[0002] The working principle of the hydraulic breaking hammer is as follows: the hydraulic pump of an excavator or a loader outputs pressure oil as power, and reciprocating motion of a piston is controlled by a flow distribution valve.When the piston is in the stroke, high-pressure hydraulic oil enters the rear cavity of the middle cylinder of the breaking hammer, and the piston impacts the drill rod to crush rocks under the combined action of compressed nitrogen gas in the rear cylinder and high-pressure oil;when the piston is in the return stroke, high-pressure oil is connected to the front cavity of the middle cylinder, which pushes the piston to move backward and compresses nitrogen gas in the upper cylinder body, thus completing a working cycle.The reciprocating stroke and return stroke of the piston enable the drill rod to impact and break rocks, stones, concrete and the like.

[0003] The drill rod of the existing breaking hammer is assembled in the lower cylinder body and clamped in the flat pin slot by a flat pin, and then the flat pin is constrained and limited by a cross pin, thereby completing the assembly of the drill rod.For an assembly workshop, it is relatively easy to complete the drill rod assembly operation by using the provided equipment, but for a construction site, the site environment is poor and lacks special equipment to efficiently complete the replacement operation of the drill rod, and the size and weight of the drill rod are large, with a single weight of several dozen to several hundred kilograms, so the operation difficulty is also large. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem of how to provide a hydraulic breaking hammer structure for facilitating the assembly of a drill rod at a construction site.

[0005] In order to solve the above technical problem, the utility model person sums up the technical scheme of the utility model through practice, which is as follows:

[0006] A hydraulic breaking hammer drill rod assembly structure comprises:

[0007] A lower cylinder body is provided with a flat pin slot, and a flat pin body is assembled in the flat pin slot;

[0008] A drill rod is provided with a flat pin clamping area, and the drill rod is assembled in the lower cylinder body through the flat pin body and the flat pin clamping area;

[0009] Two groups of side clamping plates are symmetrically distributed, and the two groups are located on the two sides of the lower cylinder body, respectively; the two groups of side clamping plates are fixed by bolts;

[0010] A side mounting rack is fixed to the side of the side clamping plate, a hydraulic cylinder is installed on the side mounting rack, a connecting frame is connected to the end of the piston rod of the hydraulic cylinder, a supporting ring is installed on the connecting frame, and two groups of correction members are symmetrically distributed on the supporting ring;

[0011] The extrusion block is fixedly installed on the lower cylinder body, the extrusion block and the correction member correspond in position, and the extrusion block acts on the correction member to correct the angle of the flat pin clamping area relative to the flat pin groove.

[0012] Preferably, the two groups of side clamping plates are provided with restraint notches on opposite sides, and two end-extensible cross pin members are installed in the restraint notches, and the cross pin members are used to limit the end of the flat pin body.

[0013] The length of the flat pin body is greater than or equal to the depth of the flat pin groove.

[0014] Preferably, the correction member comprises a fixed seat, an opening one is arranged on the top of the fixed seat, and an opening two is arranged on the side close to the center of the support ring, a correction block is installed in the fixed seat, the correction block is slidably fitted in the fixed seat through an elastic member, and the top of the correction block is obliquely arranged upwards along the direction close to the center of the support ring.

[0015] The bottom of the extrusion block is obliquely arranged downwards along the side away from the assembly position of the drill rod.

[0016] Preferably, the extrusion block comprises a fixed part and a movable part, the fixed part is installed on the bottom surface of the lower cylinder body, a guide column is installed on the movable part, the top of the guide column is slidably fitted on the inner side of the fixed part, a spring member is sleeved on the outer side of the guide column, and a retreat-preventing tooth groove is arranged on the bottom of the movable part.

[0017] A tooth groove strip is arranged in the middle of the bottom of the fixed seat, and the tooth groove strip and the retreat-preventing tooth groove correspond and are adapted in position.

[0018] Preferably, guide grooves are arranged on the fixed seat on the two sides of the opening two, an elastic member is installed in the guide grooves, sliding plates are arranged on the two sides of the correction block, the sliding plates are slidably fitted in the guide grooves and are connected with the elastic body.

[0019] Preferably, the cross pin member comprises a pressing part and two telescopic parts, a sliding cavity is arranged in the inside of the pressing part, an elastic member is installed in the sliding cavity, the two telescopic parts are slidably fitted in the sliding cavity, the two ends of the telescopic part gradually approach the side clamping plate along the side close to the lower cylinder body, and an operating column is installed on the side of the telescopic part away from the lower cylinder body.

[0020] Preferably, an ear plate is arranged on the side of the pressing part, a guide pin is slidably fitted on the ear plate, and the free end of the guide pin is fixed on the side of the lower cylinder body.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The utility model discloses a side mounting frame is installed on the side clamping plate, and the connecting frame is driven to be close to or away from the lower cylinder body through the hydraulic cylinder, when being close, the angle of the flat pin clamping area of the drill rod is corrected by the extrusion block acting on the clamping block, and the position of the flat pin clamping area and the flat pin groove along the assembly direction is corresponded through the correction, thereby the efficient positioning operation can be ensured, and the subsequent assembly operation is facilitated.

[0023] 2. The utility model discloses a constraint notch is arranged on the side clamping plate, and the flat pin body end is constrained and limited by the transverse pin assembly in the constraint notch, the position of the flat pin body in the flat pin groove is prevented from moving and forming the ladder groove, the reason of displacement is that the transverse pin of the flat pin body is mostly side-mounted, so that there is assembly gap, and the displacement is caused due to the existence of the gap, the ladder groove is prone to appearing in the flat pin groove due to the phenomenon of unavoidable empty striking of the breaking hammer, and the ladder groove is prone to forming and causing the accelerated damage of the cylinder body or the flat pin body.

[0024] 3. The utility model discloses the angle of the flat pin clamping area is corrected through the correction block, after adjusting the angle, the retention roller is used to realize the retention of the angle of the drill rod, avoids the angle deviation of the flat pin clamping area and the drill rod assembly process of the correction block from the flat pin clamping area, and further ensures the axial efficient assembly operation.

[0025] 4. The utility model discloses the weight of the drill rod is big, reduces the effect of the hydraulic cylinder piston rod and reduces the driving force of the pushing oil cylinder, the movable part is used to realize the anti -retreating constraint of the correction block after angle correction, and further can eliminate the influence of the weight of the drill rod on the structure. ACCURACY OF DRAWINGS

[0026] Figure 1 It is the whole structure schematic diagram of the utility model;

[0027] Figure 2 It is Figure 1 It is the partial close -up of A place in the middle;

[0028] Figure 3 It is the structure schematic diagram of extrusion block;

[0029] Figure 4 It is the structure schematic diagram of extrusion block anti -retreating constraint correction block;

[0030] Figure 5 It is the structure schematic diagram of correction block;

[0031] Figure 6 It is the structure schematic diagram of fixed seat;

[0032] Figure 7 It is the state diagram when the angle of drill rod is corrected;

[0033] Figure 8 It is the plan view of support ring;

[0034] Figure 9 For Figure 8 Local enlarged view at B;

[0035] Figure 10 Structural sectional view of the cross pin;

[0036] Figure 11 Position relationship diagram of the pressing part and the guide pin;

[0037] Figure 12 Horizontal sectional view of the breaking hammer at the cross pin.

[0038] In the figure: 10, lower cylinder body; 20, drill rod; 30, side clamping plate; 31, restraint notch; 40, side mounting frame; 41, hydraulic cylinder; 42, connecting frame; 43, support ring; 431, pushing oil cylinder; 432, retaining roller; 44, straightening member; 441, fixed seat; 442, opening one; 443, opening two; 444, straightening block; 445, elastic member; 446, guide groove; 447, sliding plate; 50, extrusion block; 51, fixed part; 52, movable part; 53, guide column; 54, spring member; 55, anti-retreating tooth groove; 56, tooth groove strip; 60, flat pin body; 70, cross pin; 71, pressing part; 72, telescopic part; 73, operation column; 74, guide pin; 75, elastic member. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0040] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0041] Embodiment 1

[0042] As Figure 1 and Figure 2 shown, a hydraulic breaking hammer drill rod assembly structure comprises:

[0043] A lower cylinder body 10 is provided with a flat pin slot, and a flat pin body 60 is assembled in the flat pin slot;

[0044] The drill rod 20 is provided with a flat pin clamping area, and the drill rod 20 is assembled in the lower cylinder body 10 through the flat pin body 60 and the flat pin clamping area;

[0045] The side clamping plates 30 are symmetrically distributed in two groups, and the two groups are located on the two sides of the lower cylinder body 10, and the two groups of side clamping plates 30 are fixed by bolt connection;

[0046] The side mounting racks 40 are fixed on the side of the side clamping plates 30, the hydraulic cylinders 41 are installed on the side mounting racks 40, the connecting racks 42 are connected to the piston rod ends of the hydraulic cylinders 41, the supporting rings 43 are installed on the connecting racks 42, and the two groups of correcting members 44 are symmetrically distributed on the supporting rings 43;

[0047] The extrusion blocks 50 are fixedly installed on the lower cylinder body 10, the extrusion blocks 50 correspond to the positions of the correcting members 44, and the extrusion blocks 50 act on the correcting members 44 and are used for correcting the angle of the flat pin clamping area relative to the flat pin groove.

[0048] In the specific implementation, the breaking hammer is installed on the mechanical arm of the excavator, the excavator is operated so that the track is pressed on the breaking end of the drill rod 20, the assembly end is lifted up due to the taper of the breaking end, after the lifting up, the mechanical arm is adjusted, the assembly opening and the axis of the drill rod 20 are coincided, and the mechanical arm is adjusted to the assembly end of the drill rod 20 sequentially passes through the supporting rings 43 in the axial direction and partially enters into the assembly opening, the excavator is operated to make the track separate from the drill rod 20, the connecting rack 42 is driven to move close to the lower cylinder body 10 by the piston rod of the hydraulic cylinder 41, the correcting member 44 corrects the angle of the flat pin clamping area relative to the flat pin groove under the action of the extrusion block 50, and the position in the assembly direction is corresponded, the connecting rack 42 is reset by the hydraulic cylinder 41, the correcting member 44 is reset, the mechanical arm is adjusted so that the length of the assembly end entering into the assembly opening is a set length, at this time, the flat pin groove and the flat pin clamping area are corresponded in front and back positions, and the flat pin body 60 is assembled in the flat pin groove to constrain the drill rod 20.

[0049] Embodiment 2

[0050] In the scheme of the embodiment 1, as shown in the figure, Figure 12 the opposite sides of the two groups of side clamping plates 30 are provided with constraint notches 31, and the two ends of the transverse pin members 70 are installed in the constraint notches 31, and the transverse pin members 70 are used for limiting and constraining the end portions of the flat pin bodies 60;

[0051] The length of the flat pin body 60 is greater than or equal to the depth of the flat pin groove, and is preferably equal.

[0052] As shown in the figure, Figure 1 , Figure 10 , Figure 11 , Figure 12As shown, the cross pin 70 includes a compression part 71 and two telescopic parts 72, the inside of the compression part 71 is provided with a sliding cavity, a resilient member 75 is installed in the sliding cavity, the resilient member 75 is located between the two telescopic parts 72, the two telescopic parts 72 are slidingly fitted in the sliding cavity, and the two ends of the telescopic part 72 gradually approach the side clamping plate 30 along the side close to the lower cylinder body 10, the inclination angle is between 45° and 70°, and the side of the telescopic part 72 away from the lower cylinder body 10 is provided with an operation column 73.

[0053] The cross pin 70 is assembled from the position between the two side clamping plates 30 to the lower cylinder body 10, and the compression part 71 abuts on the end face of the flat pin body 60, and the two ends of the flat pin body 60 are constrained and fixed by the compression part 71, so that the problem of easy formation of a stepped groove in the flat pin groove is eliminated.

[0054] When the flat pin body 60 is damaged, the impact on the flat pin body 60 will act on the compression part 71 to realize extrusion, and then the initial force of the resilient member 75 when the flat pin body 60 is constrained in advance, and when the extrusion degree exceeds the initial force by a certain degree, the automatic shedding can be realized by overcoming the force of the resilient member 75, the damage of the flat pin body 60 can be timely prompted, and the cross pin 70 and the side clamping plate 30 are protected.

[0055] Generally, the breaking hammer is provided with two groups of flat pin bodies 60, when one of them is damaged, the flat pin body 60 on the side will act on the compression part 71, and then the stress deviation of the cross pin 70 is easy to cause, and then the damage of the cross pin 70 is easy to cause, so an ear plate is arranged on the side of the compression part 71, as shown in Figure 1 、 Figure 11 As shown, the ear plate is slidingly fitted with a guide pin 74, and the free end of the guide pin 74 is fixed on the side of the lower cylinder body 10. The guide pin 74 is used to realize the directional movement of the compression part 71, so as to eliminate the deviation of the compression part 71 and prevent the damage of the cross pin 70.

[0056] Embodiment 3

[0057] In the scheme of embodiment 1, as shown in Figure 2 、 Figure 4 、 Figure 6 The correction member 44 includes a fixed seat 441, an opening one 442 is arranged on the top of the fixed seat 441, an opening two 443 is arranged on the side close to the center of the support ring 43, a correction block 444 is installed in the fixed seat 441, the correction block 444 is slidingly fitted in the fixed seat 441 through an elastic member 445, and the top of the correction block 444 is obliquely arranged in the direction close to the center of the support ring 43;

[0058] The bottom of the extrusion block 50 is obliquely arranged downward along the side away from the assembly position of the drill rod 20.

[0059] When the extrusion block 50 acts on the correction block 444, it will move to the center of the support ring 43, thereby correcting the angle of the drill rod 20. When the extrusion block 50 moves away from the correction block 444, it will automatically reset under the action of the elastic member 445.

[0060] Embodiment 4

[0061] In the scheme of embodiment 3, due to the assembly gap between the assembly port and the drill rod 20, after the angle is corrected, the angle will deviate during the assembly of the drill rod 20 along the axial direction, so that the position of the flat pin clamping area and the flat pin slot of the final drill rod 20 deviates. Therefore, the inventor designs as follows: as shown in Figure 8 、 Figure 9 The support ring 43 is circumferentially distributed with four push oil cylinders 431 and retaining rollers 432, and the piston rod of the push oil cylinder 431 is installed on the retaining roller 432. The retaining roller 432 is tightly attached to the surface of the drill rod 20 by the push oil cylinder 431, so as to prevent the angle from being dislocated during assembly.

[0062] In specific implementation, after the angle is corrected, the retaining roller 432 contacts the surface of the drill rod 20 to ensure the assembly direction, then the correction block 444 and the drill rod 20 are separated to the initial position, and then the drill rod 20 is assembled along the axial direction to the set position (the front and rear positions of the flat pin clamping area and the flat pin slot correspond).

[0063] Embodiment 5

[0064] In the scheme of embodiment 4, as shown in Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 The extrusion block 50 includes a fixed part 51 and a movable part 52. The fixed part 51 is installed on the bottom surface of the lower cylinder body 10, and the movable part 52 is installed with a guide column 53. The top of the guide column 53 is slidingly fitted in the inner side of the fixed part 51, and the outer side of the guide column 53 is sleeved with a spring member 54. The bottom of the movable part 52 is provided with a tooth groove 55.

[0065] The middle part of the bottom of the fixed seat 441 is provided with a tooth groove 56, and the tooth groove 56 and the tooth groove 55 correspond in position and are adapted.

[0066] Because the weight of the drill rod 20 is large, generally tens or even hundreds of kilograms, only using the pushing cylinder 431 to realize the angle and assembly direction of the drill rod 20, it is easy to cause the burden of the hydraulic cylinder 41 and the pushing cylinder 431 needs a larger pushing oil pressure, so after the correction block 444 contacts on the surface of the flat pin clamping area, the drill rod 20 is adjusted to the vertical state and the suspended state by the mechanical arm, at this time, the axis of the drill rod 20 and the assembly port axis are adjusted to coincide by the pushing cylinder 431, it needs to be noted that the correction block 444 and the flat pin clamping area are in contact state, the surface pressure force is negligible compared with the pushing force of the holding roller 432, then adjust the mechanical arm, until the drill rod 20 falls to the ground and ensures that the lower cylinder body 10 is downward relative to the axis of the drill rod 20, until the assembly end enters the set length, at this time, the flat pin clamping area and the flat pin slot correspond before and after, the flat pin body 60 is assembled in the flat pin slot.

[0067] Embodiment 6

[0068] In the scheme of embodiment 3, in order to prevent the elastic member 446 from affecting the extrusion block 50 and the operation stability of the correction block 444, as shown in Figure 5 and Figure 6 , the following improvements are made: guide grooves 446 are formed on the fixing seats 441 on both sides of the opening two 443, the elastic member 445 is installed in the guide grooves 446, and the two sides of the correction block 444 are provided with sliding plates 447 which are slidingly fitted in the guide grooves 446 and connected with the elastic body.

[0069] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. The substitution can be the substitution of part of the structure, device, method step, or the complete technical scheme. According to the technical scheme and the inventive concept of the present application, equivalent substitution or change should be covered in the protection scope of the present application.

Claims

1. A hydraulic breaking hammer rod assembly structure characterized by, The utility model relates to a kind of hydraulic cylinder, including: Lower cylinder (10), flat pin slot is provided on lower cylinder (10), and flat pin body (60) is assembled in flat pin slot; Drill rod (20), flat pin clamping area is provided on drill rod (20), and drill rod (20) is assembled in lower cylinder (10) through flat pin body (60) and flat pin clamping area; Side clamping plate (30), two groups of side clamping plate (30) are symmetrically distributed, and two groups are respectively located at the two sides of lower cylinder (10), and two groups of side clamping plate (30) are fixed by bolt connection; Side mounting frame (40), side mounting frame (40) is fixed in the side of side clamping plate (30), and hydraulic cylinder (41) is installed on side mounting frame (40), and the piston rod end of hydraulic cylinder (41) is connected with connecting frame (42), and connecting frame (42) is installed with support ring (43), and two groups of correction parts (44) are symmetrically distributed on support ring (43); Extrusion block (50), extrusion block (50) is fixedly installed on lower cylinder (10), and extrusion block (50) and correction part (44) position correspond, and extrusion block (50) acts correction part (44) for correcting the angle of flat pin clamping area relative to flat pin slot.

2. The hydraulic breaking hammer rod assembly structure according to claim 1, characterized in that, The opposite side of the two groups of side clamping plates (30) is provided with a constraint notch (31), and the constraint notch (31) is installed with a transverse pin (70) which can be extended at both ends, and the transverse pin (70) is used to limit the end of the flat pin body (60); The length of the flat pin body (60) is greater than or equal to the depth of the flat pin slot.

3. The hydraulic breaking hammer rod assembly structure according to claim 2, characterized in that, The transverse pin (70) includes a compression part (71) and two extension parts (72), the inside of the compression part (71) is provided with a sliding cavity, the sliding cavity is installed with an elastic member (75), the two extension parts (72) are slidingly fitted in the sliding cavity, the two ends of the extension part (72) gradually approach the side of the lower cylinder (10) along the side close to the side clamping plate (30), and the side of the extension part (72) away from the lower cylinder (10) is installed with an operating column (73).

4. The hydraulic breaking hammer rod assembly structure according to claim 3, characterized in that, The side of the compression part (71) is provided with an ear plate, the ear plate is slidingly fitted with a guide pin (74), and the free end of the guide pin (74) is fixed to the side of the lower cylinder (10).

5. The hydraulic breaking hammer rod assembly structure according to claim 1, wherein The correction part (44) includes a fixed seat (441), the top of the fixed seat (441) is provided with an opening one (442), the side close to the center of the support ring (43) is provided with an opening two (443), the fixed seat (441) is installed with a correction block (444), the correction block (444) is slidingly fitted in the fixed seat (441) through an elastic member (445), and the top of the correction block (444) is obliquely arranged in the direction close to the center of the support ring (43); The bottom of the extrusion block (50) is obliquely arranged downward along the side away from the assembly position of the drill rod (20).

6. The hydraulic breaking hammer rod assembly structure according to claim 5, wherein The support ring (43) is circumferentially distributed with four push oil cylinders (431) and retaining rollers (432), and the piston rod of the push oil cylinder (431) is installed on the retaining roller (432).

7. The hydraulic breaking hammer rod assembly structure according to claim 6, wherein The extrusion block (50) comprises a fixed part (51) and a movable part (52), the fixed part (51) is installed on the bottom surface of the lower cylinder body (10), the movable part (52) is provided with a guide column (53), the top of the guide column (53) is slidingly fitted in the inner side of the fixed part (51), the outer side of the guide column (53) is sleeved with a spring member (54), and the bottom of the movable part (52) is provided with a tooth groove (55) for preventing retreat. The middle part of the bottom of the fixed seat (441) is provided with a tooth groove strip (56), and the tooth groove strip (56) and the tooth groove (55) are correspondingly arranged and matched in the up-down position.

8. The hydraulic breaking hammer rod assembly structure according to claim 5, wherein The fixed seat (441) located on both sides of the opening two (443) is provided with a guide groove (446), the elastic member (445) is installed in the guide groove (446), the two sides of the correction block (444) are provided with sliding plates (447), the sliding plates (447) are slidingly fitted in the guide groove (446) and are connected with the elastic body.

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