Rack for hydraulic breaking hammer

Abstract

The utility model discloses a rack for a hydraulic breaking hammer, which comprises two groups of main bodies which are connected through bolts, the opposite sides of the two main bodies are respectively provided with a positioning boss and two groups of constraint steps, the positioning bosses are positioned in the middle of the main bodies, and the constraint steps are positioned on the two sides of the positioning bosses. Fixing plates are arranged on the opposite sides of the two restraining steps on the same main body, assembling channels and elastic restraining bodies are arranged on the fixing plates, the assembling channels are perpendicular to the restraining steps, the elastic restraining bodies are parallel to the restraining steps, and after the transverse pin is restrained by the elastic restraining bodies, initial acting force close to the lower cylinder body is applied to the transverse direction at the same time. The mode that the end face of the pin body is flattened through the forward face of the transverse pin is completed by optimizing the structure on the rack, the position of the flat pin body in the flat pin groove is ensured through transverse pin face pressing, and the problem of a stepped groove cannot occur.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic breaker frame, and particularly relates to a frame for a hydraulic breaker. Background Technology

[0002] Existing hydraulic breakers consist of a chisel, side clamps, a lower cylinder, flat pins, and cross pins. The chisel is mounted to the lower cylinder via flat pins, and the cross pins constrain the position of the flat pins within the lower cylinder. The side clamps are bolted to both sides of the lower cylinder. However, most existing flat pins are of the same length as the depth of the flat pin groove. While this provides good impact resistance, the traditional side-mounted cross pins, due to assembly requirements, introduce a certain amount of assembly gap—a gap between the flat pin end face and the cross pin. This gap fails to effectively constrain the flat pin's position within the flat pin groove, and during operation, dry-firing is prone to occur, resulting in stepped grooves in the flat pin groove. These stepped grooves accelerate damage to the flat pin or the lower cylinder. Therefore, improvements to existing hydraulic breakers are needed to address these issues. Utility Model Content

[0003] The technical problem to be solved by this utility model is:

[0004] The existing side-mounted cross pins of hydraulic breakers are prone to causing stepped grooves in the flat pin grooves, which leads to accelerated damage to the flat pin body or lower cylinder.

[0005] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this utility model, which adopts the following technical solution:

[0006] A frame for a hydraulic breaker includes:

[0007] The main body consists of two sets of components connected by bolts. Each of the two main bodies has a positioning boss and two sets of constraint steps on opposite sides. The positioning boss is located in the middle of the main body, and the constraint steps are located on both sides of the positioning boss. On the same main body, there are fixing plates on opposite sides of the two constraint steps. The fixing plates have assembly channels and elastic constraint bodies. The assembly channels are perpendicular to the constraint steps, and the elastic constraint bodies are parallel to the constraint steps. After the cross pin is constrained by the elastic constraint body, an initial force is applied laterally towards the lower cylinder.

[0008] In a preferred embodiment, the elastic constraint body includes an adjusting head and an elastic constraint head. The adjusting head is threaded onto the fixed plate and one end is rotatably connected to the elastic constraint head. The elastic constraint head is slidably fitted onto the fixed plate and its movement direction is perpendicular to the assembly channel. The end of the elastic constraint head facing away from the adjusting head is provided with an assembly surface and a constraint surface.

[0009] Preferably, the elastic constraint head comprises a fixed end and a movable end slidingly fitted with the fixed end, the fixed end is internally provided with a sliding cavity, and a spring member is installed in the sliding cavity for connecting the movable end, and an assembly surface and a constraint surface are arranged on the movable end.

[0010] Preferably, the bottom of the two groups of bodies is provided with a side mounting plate, a hydraulic cylinder is mounted on the side mounting plate, a lifting frame is connected to the piston rod of the hydraulic cylinder, a support ring is fixed on the lifting frame, and symmetrical correction members are mounted on the support ring.

[0011] The bottom of the two groups of bodies is provided with a connecting frame, a fixing ring is mounted on the connecting frame, and a pressure applying member is mounted on the fixing ring, the pressure applying member is in position correspondence with the correction member, and the bottom of the pressure applying member is obliquely downward arranged away from the center of the fixing ring.

[0012] Preferably, the correction member comprises a fixed seat, an opening one is arranged on the top of the fixed seat, an opening two is arranged on one side close to the center of the support ring, the opening one and the opening two are communicated, and a correction block and an elastic body for connecting the correction block are slidingly fitted in the fixed seat.

[0013] The two sides of the correction block are provided with sliding plates, and the side of the opening two is provided with a guide groove, the guide groove and the sliding plates are slidingly fitted.

[0014] Preferably, four jacking oil cylinders are circumferentially distributed on the support ring, an angle maintaining roller is connected to the end of the jacking oil cylinder, and the angle maintaining roller moves along the radial direction of the support ring.

[0015] Preferably, a guide strip is mounted on the support ring, and an ear plate body is arranged on the side of the angle maintaining roller, the ear plate body and the guide strip are slidingly fitted.

[0016] The roller surface of the angle maintaining roller is in an arc structure.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The utility model completes the way of flattening the end surface of the horizontal pin by optimizing the structure on the rack, and ensures the position of the flat pin body in the flat pin groove by using the horizontal pin surface pressure, so that the problem of stepped groove does not occur.

[0019] 2. The elastic constraint body can adjust the initial force of the constraint horizontal pin by adjusting the head and the elastic constraint head, and the end of the elastic constraint head adopts the assembly surface and the constraint surface in an inclined structure, the assembly surface is used for facilitating assembly, the constraint surface is used for applying an initial pressure to the end of the horizontal pin, and the stability of the horizontal pin is ensured.

[0020] 3. The utility model discloses still installed on the main body side mounting plate, install hydraulic cylinder on the side mounting plate, the end of hydraulic cylinder is connected with the connecting frame, and the supporting ring is installed on the connecting frame, and the supporting ring is sleeved on the outside of the drill rod, and the effect of the extruding block to the correction block is realized by the supporting ring close to the lower cylinder body, and the correction of the angle of the flat pin clamp area of the drill rod is completed, and then the work of assembling the drill rod on the spot is facilitated.

[0021] 4. The utility model discloses that the supporting ring is installed with the push oil jar and the angle keeping roller, and the angle of the drill rod after the correction angle is realized by the push oil jar driving angle keeping roller and is kept, after the correction block completely separates the drill rod, and the drill rod can be assembled in the lower cylinder body along the axis. DRAWINGS

[0022] Figure 1 It is the overall structure schematic drawing of single main body of the utility model;

[0023] Figure 2 It is the structure relation diagram of fixed plate and elastic constraint body of the utility model;

[0024] Figure 3 It is the structure diagram of elastic constraint head of the utility model;

[0025] Figure 4 It is the overall structure diagram of rack of the utility model;

[0026] Figure 5 It is the overall structure diagram of rack of the utility model side view;

[0027] Figure 6 It is the plan view of supporting ring of the utility model;

[0028] Figure 7 It is Figure 6 The local enlarged view of A in;

[0029] Figure 8 It is Figure 7 The overall structure diagram of angle keeping roller in;

[0030] Figure 9 It is the rack use diagram of the utility model;

[0031] Figure 10 It is Figure 9 The local enlarged view of B in;

[0032] Figure 11 It is Figure 9 The overall structure diagram of fixed seat in;

[0033] Figure 12 It is Figure 9 The overall structure diagram of correction block in;

[0034] Figure 13 This is a diagram showing the position distribution of the straightening components and chisel when correcting the angle.

[0035] In the diagram: 100, Main body; 110, Positioning boss; 120, Constraint step; 130, Fixing plate; 131, Assembly channel; 140, Elastic constraint body; 141, Adjusting head; 142, Elastic constraint head; 1421, Fixed end; 1422, Movable end; 1423, Spring component; 143, Assembly surface; 144, Constraint surface; 150, Side mounting plate; 151, Hydraulic cylinder; 152, Lifting frame. ; 153, Support ring; 1531, Pushing cylinder; 1532, Angle holding roller; 1534, Guide bar; 1535, Ear plate body; 154, Correcting component; 1541, Fixed seat; 1542, Opening one; 1543, Opening two; 1544, Correcting block; 1545, Elastomer; 1546, Sliding plate; 1547, Guide groove; 160, Connecting frame; 161, Pressure applying component; 162, Fixed ring. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Example 1

[0039] like Figures 1 to 2 As shown, a frame for a hydraulic breaker includes:

[0040] The main body 100 consists of two sets connected by bolts. The two sets of main bodies 100 are distributed on both sides of the lower cylinder. Each of the two main bodies 100 has a positioning boss 110 and two sets of constraint steps 120 on opposite sides. The positioning boss 110 is located in the middle of the main body 100 and is used to fit onto the surface of the lower cylinder. The surface of the lower cylinder has a positioning groove. The constraint steps 120 are located on both sides of the positioning boss 110. The two constraint steps 120 on the same main body 100 have a fixing plate 130 on opposite sides. The fixing plate 130 has an assembly channel 131 and an elastic constraint body 140. The assembly channel 131 is perpendicular to the constraint steps 120, and the elastic constraint body 140 is parallel to the constraint steps 120.

[0041] The two ends of the cross pin are inserted into the assembly channel 131 on the same side, are inserted and constrained by the elastic constraint body 140, and press the flat pin body end face with an initial pressure after being constrained by the elastic constraint body 140, thereby ensuring the structural stability of the flat pin body during the construction of the breaking hammer.

[0042] Embodiment 2

[0043] In the scheme of embodiment 1, as shown in Figure 2 and Figure 3 , the elastic constraint body 140 includes an adjusting head 141 and an elastic constraint head 142, the adjusting head 141 is threadedly installed on the fixed plate 130 and rotationally connected at one end to the elastic constraint head 142, the elastic constraint head 142 is slidingly fitted on the fixed plate 130 and moves in a direction perpendicular to the assembly channel 131, and the end of the elastic constraint head 142 opposite to the adjusting head 141 is provided with an assembly surface 143 and a constraint surface 144.

[0044] The initial force of the elastic constraint head 142 on the cross pin after constraining the cross pin can be achieved by adjusting the adjusting head 141, thereby ensuring the effective constraint of flat pin bodies of different specifications and sizes. The assembly surface 143 and the constraint surface 144 are both inclined surfaces, the assembly surface 143 gradually deviates from the assembly channel along the side away from the lower cylinder, the constraint surface 144 gradually deviates from the assembly channel along the side close to the lower cylinder, and the inclination angle of the assembly surface 143 is smaller than that of the constraint surface 144. The end of the cross pin enters without obstruction through the assembly surface 143 and is constrained due to the constraint surface 144, the constraint surface 144 can exert an initial pressure on the end of the cross pin, thereby ensuring the constraint and limitation of the end of the flat pin body, and when the flat pin body is damaged due to the impact of the drill rod, the flat pin body will extrude the cross pin, and when the extrusion force is greater than the initial force exerted by the elastic constraint head 142 to a certain extent, the cross pin can overcome the constraint force of the elastic constraint head 142 to complete the shedding, thereby avoiding the situation that the cross pin is only discovered when it is severely damaged, and once discovered, the flat pin body is easily stuck in the lower cylinder or directly causes the cracking of the lower cylinder. Through this arrangement, the above problems can be overcome, and the cross pin can be effectively protected and recycled.

[0045] The elastic constraint head 142 includes a fixed end 1421 and a movable end 1422 slidingly fitted relative to the fixed end 1421, the inside of the fixed end 1421 is provided with a sliding cavity, a spring member 1423 is installed in the sliding cavity for connecting the movable end 1422, and the assembly surface 143 and the constraint surface 144 are provided on the movable end 1422. The extrusion amount of the spring member 1423 is adjusted by adjusting the feed amount of the adjusting head 141, thereby adjusting the initial constraint force of the cross pin.

[0046] Embodiment 3

[0047] In the scheme of embodiment 1, as shown in Figure 4 , Figure 5 , Figure 6 The bottom of the two groups of bodies 100 is provided with two groups of side mounting plates 150, and the two groups of side mounting plates 150 are provided with hydraulic cylinders 151. The piston rods of all the hydraulic cylinders 151 are connected with a lifting frame 152, the lifting frame 152 is fixed with a supporting ring 153, and the supporting ring 153 is provided with symmetrical distributed correcting members 154.

[0048] The bottom of the two groups of bodies 100 is provided with a connecting frame 160, the connecting frame 160 is provided with a fixing ring 162, and the fixing ring 162 is provided with a pressing member 161. The pressing member 161 corresponds to the position of the correcting member 154, and the bottom of the pressing member 161 is obliquely downward arranged away from the center of the fixing ring 162.

[0049] As shown in Figures 9 to 13 The correcting member 154 comprises a fixed seat 1541, the top of the fixed seat 1541 is provided with an opening one 1542, and the side close to the center of the supporting ring 153 is provided with an opening two 1543. The opening one 1542 and the opening two 1543 are communicated, and the fixed seat 1541 is internally slidably fitted with a correcting block 1544 and an elastic body 1545 for connecting the correcting block 1544.

[0050] The two sides of the correcting block 1544 are provided with sliding plates 1546, and the side of the opening two 1543 is provided with a guide groove 1547. The guide groove 1547 and the sliding plate 1546 are slidably fitted.

[0051] The supporting ring 153 and the fixing ring 162 are sleeved on the outside of the drill rod. When the drill rod is installed on site, the breaking hammer is installed on the mechanical arm of the excavator, the breaking end of the drill rod is pressed by the crawler, the assembly end is warped due to the conical structure, the assembly opening of the lower cylinder body and the axis of the drill rod are overlapped by adjusting the mechanical arm, and the lower cylinder body is close to the drill rod along the axis of the drill rod by controlling the mechanical arm. The assembly end of the drill rod passes through the supporting ring 153 and the fixing ring 162 in turn and partially enters into the assembly opening, the supporting ring 153 is close to the fixing ring 162 by the hydraulic cylinder 151, the correcting block 1544 is close to the center of the supporting ring 153 by the pressing member 161, until the flat pin clamping area on the drill rod is corrected, so that the flat pin clamping area and the flat pin groove are positionally corresponding in the assembly direction. After angle adjustment, the supporting ring 153 is away from the fixing ring 162 by the hydraulic cylinder 151, the correcting block 1544 is reset under the action of the elastic body 1545, the mechanical arm is controlled to assemble the drill rod assembly end into the lower cylinder body to a certain depth, so that the flat pin groove and the flat pin clamping area are positionally corresponding, and finally the flat pin body is assembled and constrained by the transverse pin end face.

[0052] Embodiment 4

[0053] In the scheme of embodiment 3, as shown in Figures 4 to 8 The support ring 153 is provided with four push oil cylinders 1531 distributed in the circumferential direction, and the end of the push oil cylinder 1531 is connected with an angle maintaining roller 1532, and the angle maintaining roller 1532 moves along the radial direction of the support ring 153.

[0054] The support ring 153 is provided with a guide strip 1534, and the side of the angle maintaining roller 1532 is provided with an ear plate body 1535, and the ear plate body 1535 and the guide strip 1534 are in sliding fit;

[0055] The roller surface of the angle maintaining roller 1532 is in arc structure.

[0056] After the correction angle and the correction block 1544 completely separates from the drill rod, the angle is changed in the subsequent drill rod assembly operation, and the final flat pin slot and the flat pin clamping area are angularly misaligned, so the angle maintaining roller 1532 is used to circumferentially constrain the drill rod at the first time after the angle is corrected, only the axial displacement is reserved, so that the final flat pin slot and the flat pin clamping area are coincident in position after the assembly end enters the inside of the lower cylinder body, and the flat pin body is beneficial to be assembled once.

[0057] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. The replacement can be the replacement of part of the structure, device, method step, or the complete technical scheme. According to the technical scheme and the utility model concept of the present application, equivalent replacement or change should be covered in the protection scope of the present application.

Claims

1. A frame for a hydraulic breaking hammer, characterized in that The utility model relates to a two -group body (100) for the body (100) is provided with two groups and is connected by bolt, two bodies (100) relative side are provided with positioning boss (110) and two groups of constraint step (120), positioning boss (110) are located in the middle part of body (100), constraint step (120) are located in the both sides of positioning boss (110), two constraint steps (120) on the same body (100) relative side are provided with fixed plate (130), fixed plate (130) are provided with assembly channel (131) and elastic constraint body (140) on, assembly channel (131) are perpendicular to constraint step (120), elastic constraint body (140) are parallel constraint step (120) setting. The elastic constraint body (140) includes an adjusting head (141) and an elastic constraint head (142), the adjusting head (141) is threadedly installed on the fixed plate (130) and one end is rotatably connected to the elastic constraint head (142), the elastic constraint head (142) is slidingly fitted on the fixed plate (130) and the movement direction is perpendicular to the assembly channel (131), and the end of the elastic constraint head (142) opposite to the adjusting head (141) is provided with an assembly surface (143) and a constraint surface (144).

2. The frame for a hydraulic breaking hammer according to claim 1, characterized in that, The elastic constraint head (142) includes a fixed end (1421) and a movable end (1422) slidingly fitted opposite to the fixed end (1421), the inside of the fixed end (1421) is provided with a sliding cavity, and a spring member (1423) is installed in the sliding cavity for connecting the movable end (1422), and the assembly surface (143) and the constraint surface (144) are provided on the movable end (1422).

3. The frame for a hydraulic breaking hammer according to claim 2, characterized in that The bottom of the two bodies (100) opposite to one side is provided with a side mounting plate (150), a hydraulic cylinder (151) is installed on the side mounting plate (150), a lifting frame (152) is connected to the piston rod of the hydraulic cylinder (151), a support ring (153) is fixed on the lifting frame (152), and symmetrical distributed correction members (154) are installed on the support ring (153).

4. The frame for a hydraulic breaking hammer according to claim 1, characterized in that, A connecting frame (160) is installed on the bottom of the two bodies (100), a fixed ring (162) is installed on the connecting frame (160), a pressure applying member (161) is installed on the fixed ring (162), the pressure applying member (161) corresponds to the position of the correction member (154), and the bottom of the pressure applying member (161) is obliquely downward away from the center of the fixed ring (162). The correction member (154) includes a fixed seat (1541), an opening one (1542) is provided on the top of the fixed seat (1541), an opening two (1543) is provided on the side close to the center of the support ring (153), the opening one (1542) and the opening two (1543) are communicated, a correction block (1544) and an elastic body (1545) for connecting the correction block (1544) are slidingly fitted in the fixed seat (1541); 5. The frame for a hydraulic breaking hammer according to claim 4, characterized in that The two sides of the correction block (1544) are provided with sliding plates (1546), the side of the opening two (1543) is provided with a guide groove (1547), and the guide groove (1547) and the sliding plates (1546) are slidingly fitted. ​ 6. The frame for a hydraulic breaking hammer according to claim 5, characterized in that Four pushing oil cylinders (1531) are distributed in the circumference of the support ring (153), and the end of the pushing oil cylinder (1531) is connected with an angle maintaining roller (1532) which moves along the radial direction of the support ring (153).

7. The frame for a hydraulic breaking hammer according to claim 6, characterized in that A guide bar (1534) is installed on the support ring (153), and the side of the angle maintaining roller (1532) is provided with an ear plate body (1535) which is in sliding fit with the guide bar (1534). The roller surface of the angle maintaining roller (1532) is in arc structure.

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