Shell of hydraulic breaking hammer with improved structure

Abstract

The utility model provides a hydraulic breaking hammer shell with an improved structure, and belongs to the technical field of breaking hammers. Comprising a shell frame and a wallboard bolt arranged on the shell frame in a penetrating mode, the shell frame comprises a front baffle, a left side plate and a right side plate, a left clamping plate is fixed to the inner side of the left side plate, a right clamping plate is fixed to the inner side of the right side plate, an anti-rotation through hole is directly formed in the shell frame, an anti-rotation platform is arranged in the anti-rotation through hole, and an anti-rotation notch is correspondingly formed in the wallboard bolt. The wallboard bolt penetrates through the anti-rotation through hole and the anti-rotation notch to abut against the anti-rotation platform during installation, and the wallboard bolt is limited in the circumferential direction. A bolt stop block structure welded on the shell side plate is eliminated, the anti-rotation through hole for the wallboard bolt to penetrate through is directly formed in the shell side plate or the clamping plate, meanwhile, the anti-rotation notch is formed in the wallboard bolt, and the wallboard bolt and the shell side plate or the clamping plate are matched and jointly act to achieve the anti-rotation effect of the wallboard bolt. Therefore, the movement and the shell of the hydraulic breaking hammer can be better fixed.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic breakers, and particularly refers to a hydraulic breaker housing with an improved structure. Background Art

[0002] A hydraulic breaker is a tool used to break rocks, hardened road surfaces, etc. The hydraulic breaker includes a housing and a movement. The housing includes two oppositely arranged side plates. Inner walls of each side plate are provided with front clamping plates. The movement is arranged between the two front clamping plates. The side plates, the front clamping plates and the movement are fixedly connected in sequence. The hydraulic breaker further includes a plurality of wall plate bolts penetrating through the two side plates and the two front clamping plates. The wall plate bolts fix the housing and the movement of the hydraulic breaker together. When the hydraulic breaker is working, it will generate intense vibrations. In order to fix the housing and the movement of the hydraulic breaker more firmly together, when tightening the wall plate bolts, means such as lever force addition are used to tighten the wall plate bolts.

[0003] For this reason, the applicant previously designed a housing of a hydraulic breaker with an application number of 202123108102X, which includes two oppositely arranged side plates. A plurality of corresponding mounting holes are provided on the two side plates. Wall plate bolts penetrate through the mounting holes. The wall plate bolts include a nut section and a threaded section. A bolt stopper is fixedly connected around the mounting hole of one of the side plates. The bolt stopper can contact one or two sides of the nut section and limit the rotation of the wall plate bolt. The threaded section extends out from the mounting hole of the other side plate and is connected with a nut. The nut section of the wall plate bolt contacts and resists against the bolt stopper to perform circumferential limitation on the wall plate bolt. When tightening the nut of the wall plate bolt, the bolt stopper contacts the nut section of the wall plate bolt to prevent the wall plate bolt from rotating. By increasing the torque of tightening the nut, the movement and the housing of the hydraulic breaker can be fixed better.

[0004] The above bolt stopper is fixed on the side plate in a welding form. In actual use, we found that under the high-frequency operation of the hydraulic breaker, the bolt stopper is prone to fracture, which will seriously affect the normal operation of the hydraulic breaker. This is because, on the one hand, the bolt stopper itself is relatively thin, the torque of the wall plate bolts of large hydraulic breakers is large, the striking force is large, and the acting force reacting on the bolt stopper is also large; on the other hand, the bolt stopper and the side plate are connected by welding, and the welding area is relatively limited, resulting in insufficient strength of the bolt stopper.

[0005] All of the above lead to limited actual utility of the bolt stopper and need to be improved. Summary of the Utility Model

[0006] The purpose of the utility model is to propose a hydraulic breaker housing with an improved structure in view of the above problems existing in the prior art. The technical problem to be solved by the utility model is: how to improve the service life of the limiting structure for the wall plate bolts.

[0007] The object of the utility model can be achieved by the following technical solutions:

[0008] A hydraulic breaker housing with an improved structure includes a housing frame and wallboard bolts penetrating through the housing frame. The housing frame includes a front baffle, a left side plate, and a right side plate. A left clamping plate is fixed inside the left side plate, and a right clamping plate is fixed inside the right side plate. The left clamping plate and the right clamping plate are arranged opposite to each other. The wallboard bolt includes a nut portion, a right screw portion, a middle screw portion, a left screw portion, a threaded portion, and a nut from right to left. The nut is screwed outside the threaded portion and abuts against the left side plate. The right screw portion passes through the right side plate and the right clamping plate, and the left screw portion passes through the left clamping plate and the left side plate. Among them, an anti-rotation through hole is directly opened on the housing frame, an anti-rotation platform is provided in the anti-rotation through hole, and an anti-rotation notch is correspondingly provided on the wallboard bolt. When the wallboard bolt is installed, it passes through the anti-rotation through hole, and the anti-rotation notch abuts against the anti-rotation platform to perform circumferential limit on the wallboard bolt.

[0009] Preferably, the anti-rotation through hole is provided on the right clamping plate, and an anti-rotation notch opening leftward is provided on the right screw portion. The anti-rotation notch is planar, and the length of the anti-rotation notch is consistent with the thickness of the right clamping plate.

[0010] Furthermore, the shaft diameter of the right screw portion is greater than the shaft diameters of the middle screw portion, the left screw portion, and the threaded portion.

[0011] Furthermore, washers are clamped between the nut portion and the right side plate, and washers are clamped between the nut and the left side plate.

[0012] Preferably, the anti-rotation through hole is provided on the left clamping plate, and an anti-rotation notch opening leftward is provided at the left screw portion. The length of the anti-rotation notch is consistent with the thickness of the left clamping plate.

[0013] Furthermore, the shaft diameters of the right screw portion and the left screw portion are the same and are both greater than the shaft diameters of the middle screw portion and the threaded portion.

[0014] Furthermore, washers are clamped between the nut portion and the right side plate, and washers are clamped between the nut and the left side plate.

[0015] Preferably, an anti-rotation through hole is opened on the left side plate. The nut of the wallboard bolt is convex, having a large-diameter portion and a small-diameter portion. Among them, an anti-rotation notch is provided on the outer wall of the small-diameter portion. The small-diameter portion can be inserted into the anti-rotation through hole, and the anti-rotation notch abuts against the anti-rotation platform to limit the rotation of the nut. The right end of the large-diameter portion abuts against the outer wall of the left side plate.

[0016] Furthermore, the nut portion of the wallboard bolt is a hexagonal nut, and the center of the nut has a through hole for the threaded portion to pass through and connect. Among them, the inner wall of the hole of the large-diameter portion has internal threads, and the threaded portion and the nut are screwed tightly together by applying force from the nut portion.

[0017] Furthermore, washers are clamped between the nut portion and the right side plate.

[0018] Compared with the prior art, the utility model eliminates the bolt stop structure welded on the side plate of the housing, directly sets anti-rotation through holes on the side plate or clamping plate of the housing for the wall plate bolts to pass through, and at the same time sets anti-rotation notches on the wall plate bolts. The wall plate bolts and the side plate or clamping plate of the housing cooperate to jointly achieve the anti-rotation effect of the wall plate bolts, and thus can better fix the hydraulic breaker core and the housing. In the utility model, by utilizing the characteristics of the larger, thicker and more stable structure of the side plate or clamping plate of the housing, it directly becomes the abutting point for restricting rotation to form a rotation-limiting structure with greater bearing strength, which is difficult to break even under the high-frequency operation of the hydraulic breaker; in terms of processing technology, only corresponding through holes and notches need to be opened, the structure is simpler, the production is more convenient, there is no need to additionally weld an anti-rotation structure (bolt stop), the manufacturing cost is more saved, and the overall service life is longer and the structure is more reliable. Brief Description of the Drawings

[0019] Figure 1 is a schematic structural view of the prior art hydraulic breaker housing.

[0020] Figure 2 is a schematic structural view of the hydraulic breaker housing in the first embodiment of the utility model.

[0021] Figure 3 is a schematic structural view of the hydraulic breaker housing in the first embodiment of the utility model from another angle.

[0022] Figure 4 is a schematic structural view of the cooperation between the right side plate and the right clamping plate in the first embodiment of the utility model.

[0023] Figure 5 is a schematic structural view of the wall plate bolt in the first embodiment of the utility model.

[0024] Figure 6 is a sectional view of the hydraulic breaker housing in the first embodiment of the utility model.

[0025] Figure 7 is a schematic structural view of the cooperation between the left side plate and the left clamping plate in the second embodiment of the utility model.

[0026] Figure 8 is a schematic structural view of the wall plate bolt in the second embodiment of the utility model.

[0027] Figure 9 is a schematic structural view of the hydraulic breaker housing in the third embodiment of the utility model.

[0028] Figure 10 is a schematic structural view of the hydraulic breaker housing in the third embodiment of the utility model from another angle.

[0029] Figure 11It is a schematic structural diagram of the housing frame of the hydraulic breaker in the third embodiment of the present utility model.

[0030] Figure 12 It is a sectional view of the housing of the hydraulic breaker in the third embodiment of the present utility model.

[0031] Figure 13 It is a schematic structural diagram of the wall plate bolt in the third embodiment of the present utility model.

[0032] Figure 14 It is a schematic structural diagram of the nut in the third embodiment of the present utility model.

[0033] In the figure, 1, front baffle; 2, left side plate; 3, right side plate; 4, left clamping plate; 5, right clamping plate; 6, wall plate bolt; 61, nut portion; 62, left screw portion; 63, middle screw portion; 64, right screw portion; 65, thread portion; 66, nut; 661, large diameter portion; 662, small diameter portion; 7, anti-rotation through hole; 71, anti-rotation platform; 8, anti-rotation notch. Detailed implementation manners

[0034] The following are specific embodiments of the present utility model and in combination with the attached drawings, the technical solutions of the present utility model are further described, but the present utility model is not limited to these embodiments. Embodiment

[0035] As Figure 1 shown, it is the housing structure of the existing hydraulic breaker, including a side plate 1' and a side plate through hole 2' provided on the side plate 1' for the wall plate bolt to pass through. Outside the side plate through hole 2' and on the side plate 1', a bolt stopper 3' is welded. The wall plate bolt includes a screw, a nut section and a thread section. Among them, the thread section and the screw pass through the side plate through hole 2' in sequence, and the nut section is left at the bolt stopper 3'. The edge of the nut section abuts against the bolt stopper 3', which can circumferentially limit the whole wall plate bolt. The thread section is screwed with a nut to fix the wall plate bolt on the housing.

[0036] There are 10 bolt stoppers 3' welded on the side plate of the above housing. The function of these bolt stoppers 3' is that when tightening the nut of the wall plate bolt, the bolt stopper 3' contacts the nut section of the wall plate bolt to prevent the wall plate bolt from rotating. By increasing the torque of tightening the nut, the hydraulic breaker movement and the housing can be better fixed.

[0037] However, the welded bolt stopper 3' is severely damaged in strength under the high-frequency operation of the hydraulic breaker and is prone to fracture, resulting in the self-rotation of the wall plate bolt. The movement in the housing of the hydraulic breaker cannot be effectively positioned and supported, which will seriously affect the normal use of the hydraulic breaker.

[0038] For this reason, this embodiment provides a hydraulic breaker housing with an improved structure, as Figures 2 - 6As shown in the figure, it includes a housing frame and wallboard bolts 6. The housing frame includes a front baffle 1, a left side plate 2, and a right side plate 3. A movement (not shown in the figure) is arranged inside the housing. The wallboard bolts 6 pass through the left side plate 2, the movement, and the right side plate 3 in sequence to clamp the movement inside the housing.

[0039] A left clamping plate 4 is fixed on the surface of the left side plate 2 facing the right side plate 3, and a right clamping plate 5 is fixed on the surface of the right side plate 3 facing the left side plate 2. Through holes for the wallboard bolts 6 to pass through are provided on the left side plate 2, the right side plate 3, the left clamping plate 4, and the right clamping plate 5.

[0040] In this embodiment, both the left clamping plate 4 and the right clamping plate 5 are of split structures. Specifically, the left clamping plate 4 includes a left front clamping plate 41 and a left rear clamping plate 42, and the right clamping plate 5 includes a right front clamping plate 51 and a right rear clamping plate 52. The left front clamping plate 41 and the right front clamping plate 51 are arranged oppositely, and the left rear clamping plate 42 and the right rear clamping plate 52 are arranged oppositely. In this way, both the left and right side plates have hole grooves for lifting the housing and can provide more position spaces for installing the wallboard bolts 6.

[0041] In this embodiment, the wallboard bolt 6 includes a nut portion 61, a right screw portion 62, a middle screw portion 63, a left screw portion 64, a threaded portion 65, and a nut 66 from right to left. Among them, the right screw portion 62, the middle screw portion 63, the left screw portion 64, and the threaded portion 65 are all cylindrical. The shaft diameter of the middle screw portion 63 is smaller than the shaft diameters of the left screw portion 62, the right screw portion 64, and the threaded portion 65. The right screw portion 62 is placed inside the right side plate 3 and the right clamping plate 5, and the nut portion 61 is located outside the right side plate 3 and abuts against the right side plate 3. Specifically, a washer is also clamped between the nut portion 61 and the right side plate 3; the left screw portion 64 is placed inside the left clamping plate 4 and the left side plate 2, and the threaded portion 65 protrudes outside the left side plate 2 and is screwed with the nut 66. A washer is clamped between the nut 66 and the left side plate 2. The wallboard bolt 6 is fastened to the housing through the cooperation of the nut portion 61 and the nut 66. The middle screw portion 63 is used to pass through the movement to support and fix the movement inside the housing.

[0042] In this embodiment, circular through holes for the wallboard bolts 6 to pass through are provided on the left side plate 2, the left clamping plate 4, and the right side plate 3, and an anti-rotation through hole 7 for the wallboard bolts 6 to pass through is provided on the right clamping plate 5.

[0043] In this embodiment, an anti-rotation notch 8 opening to the left is provided on the right screw portion 62. The anti-rotation notch 8 is planar, and the length of the anti-rotation notch 8 is the same as the thickness of the right clamping plate 5. One anti-rotation notch 8 or multiple anti-rotation notches 8 are circumferentially spaced on the same wallboard bolt 6. An anti-rotation platform 71 is provided inside the corresponding anti-rotation through hole 7. Specifically, in this embodiment, the anti-rotation through hole 7 is in a runway shape, and there are two symmetrically arranged anti-rotation notches 8 on the wallboard bolt 6.

[0044] In this embodiment, after the wall panel bolt 6 passes through the left panel 2, the left clamping plate 4, the right clamping plate 5, and the right panel 3, it abuts against the anti-rotation platform 9 through the anti-rotation notch 8, so that the wall panel bolt 6 can pass through the left clamping plate 4, but cannot rotate circumferentially. The wall panel bolt 6 and the right clamping plate 5 jointly form the anti-rotation function of the wall panel bolt 6.

[0045] Meanwhile, in this embodiment, the shaft diameter of the right screw part 62 is larger than that of the left screw part 64. In this way, the service strength of the right screw part 62 can be improved, and it is not easy to break under the high-intensity impact of the hydraulic breaker. The diameters of the circular through-hole on the corresponding right panel 3 and the anti-rotation through-hole 7 on the right clamping plate 5 are larger than the diameters of the circular through-holes on the left panel 2 and the left clamping plate 4. In this way, it is convenient for the left screw part 64 and the threaded part 65 of the wall panel bolt 6 to be inserted through the right panel 3 and the right clamping plate 5, making the insertion more labor-saving. Embodiment

[0046] This embodiment is relative to Embodiment 1. As Figure 7 、 8 shown, an anti-rotation notch 8 opening to the left is provided at the left screw part 64 of the wall panel bolt 6. The length of the anti-rotation notch 8 is the same as the thickness of the left clamping plate 4. Correspondingly, an anti-rotation through-hole 7 is provided on the left clamping plate 4, and an anti-rotation platform 71 is provided in the anti-rotation through-hole 7.

[0047] In this embodiment, the shaft diameter of the left screw part 64 can be thickened (the shaft diameter mentioned here refers to the radius of the arc side of the left screw part 64). In this way, the service strength of the left screw part 64 can be improved. Specifically, the shaft diameters of the left screw part 64 and the right screw part 62 are the same, and at the same time, the diameter of the anti-rotation through-hole 7 is correspondingly increased. The left panel 2, the right clamping plate 5, and the right panel 3 all have circular through-holes for the wall panel bolt 6 to pass through. In this way, it will neither affect the left screw part 64 passing through the right panel 3 and the right clamping plate 5, nor can it provide a wall panel bolt 6 with greater strength. Embodiment

[0048] This embodiment is relative to Embodiment 1. As Figures 9 - 14 shown, the nut part 61 of the wall panel bolt 6 is a hexagonal nut, which is convenient for a tool to apply force to tighten the wall panel bolt 6 from the nut part 61. The right screw part 62, the middle screw part 63, the left screw part 64, and the threaded part 65 of the wall panel bolt 6 are all cylindrical. The right panel 3, the right clamping plate 5, and the left clamping plate 4 all have circular through-holes for the wall panel bolt 6 to pass through. An anti-rotation through-hole 7 is opened on the left panel 2, and an anti-rotation platform 71 is provided in the anti-rotation through-hole 7.

[0049] In this embodiment, the nut 66 of the wall panel bolt 6 is convex, having a large-diameter portion 661 and a small-diameter portion 662. An anti-rotation notch 8 is provided on the outer wall of the small-diameter portion 662. The small-diameter portion 662 can be inserted into the anti-rotation through hole 7. The anti-rotation notch 8 abuts against the anti-rotation platform 71 to limit the rotation of the nut 66. The right end of the large-diameter portion 661 abuts against the outer wall of the left side plate 2. The center of the nut 66 is a through hole for the threaded portion 65 to pass through and connect. The inner wall of the hole of the large-diameter portion 661 has an internal thread and can be screwed and connected with the threaded portion 65.

[0050] During installation, the small-diameter portion 662 of the nut 66 is inserted into the anti-rotation through hole 7. The rod body portion of the wall panel bolt 6 sequentially passes through the right side plate 3, the right clamping plate 5, the left clamping plate 4, and the left side plate 2. The threaded portion 65 of the wall panel bolt 6 passes through the small-diameter portion 662 and abuts against the internal thread of the large-diameter portion 661. Rotate the nut portion 61 to gradually screw the threaded portion 65 and the large-diameter portion 661 into one body until the nut portion 61 of the wall panel bolt 6 abuts against the outside of the right side plate 3. A washer can be clamped between the nut portion 61 and the right side plate 3.

[0051] In this embodiment, the wall panel bolt 6 is rotated integrally by rotating the nut portion 61, and at the same time, the wall panel bolt 6 is locked on the housing integrally with the rotatable-limiting nut 66. In this embodiment, the washer between the nut 66 and the left side plate 2 is cancelled, and a small-diameter portion with an anti-rotation notch 8 is designed, whose function is equivalent to that of the washer. Moreover, the nut 66 is screwed and fixed with the wall panel bolt 6, and the anti-rotation effect of the nut 66 can extend to the wall panel bolt 6 to also produce an anti-rotation effect. The nut 66 has both a large-diameter portion 661 and a small-diameter portion 662. As an integral structure, it is integrally cast. Compared with the bolt stopper 3' in the prior art, it is thicker, has stronger anti-striking ability, and has no welding points and is not easy to break.

[0052] Embodiment 3 can be combined with the structures of Embodiment 1 and / or 2, that is, multiple anti-rotation notches 8 can be provided at different positions on the wall panel bolt 6, and multiple anti-rotation through holes are provided corresponding to the side plates or clamping plates of the housing to provide a better anti-rotation effect.

[0053] The above embodiments are only the preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope defined by the claims of the present invention.

Claims

1. A hydraulic breaker housing with improved structure, comprising a housing frame and wall panel bolts (6) penetrating through the housing frame. The housing frame includes a front baffle (1), a left side plate (2), and a right side plate (3). A left clamping plate (4) is fixed inside the left side plate (2), and a right clamping plate (5) is fixed inside the right side plate (3). The left clamping plate (4) and the right clamping plate (5) are arranged oppositely. The wall panel bolt (6) includes a nut portion (61), a right screw portion (62), a middle screw portion (63), a left screw portion (64), a threaded portion (65), and a nut (66) from right to left. The nut (66) is screwed outside the threaded portion (65) and abuts against the left side plate (2). The right screw portion (62) passes through the right side plate (3) and the right clamping plate (5), and the left screw portion (64) passes through the left clamping plate (4) and the left side plate (2). It is characterized in that, An anti-rotation through hole (7) is directly formed on the housing frame. An anti-rotation platform (71) is arranged inside the anti-rotation through hole (7). An anti-rotation notch (8) is correspondingly arranged on the wall panel bolt (6). When the wall panel bolt (6) is installed, it passes through the anti-rotation through hole (7), and the anti-rotation notch (8) abuts against the anti-rotation platform (71) to circumferentially limit the wall panel bolt (6).

2. The hydraulically broken hammer housing with improved structure according to claim 1, wherein The anti-rotation through hole (7) is arranged on the right clamping plate (5). An anti-rotation notch (8) with a leftward opening is arranged on the right screw part (62). The anti-rotation notch (8) is planar, and the length of the anti-rotation notch (8) is the same as the thickness of the right clamping plate (5).

3. The hydraulically-driven breaker housing with improved structure according to claim 2, wherein, The shaft diameter of the right screw part (62) is larger than the shaft diameters of the middle screw part (63), the left screw part (64), and the threaded part (65).

4. The hydraulically broken hammer housing with improved structure according to claim 2 or 3, characterized in that A washer is clamped between the nut part (61) and the right side plate (3), and a washer is clamped between the nut (66) and the left side plate (2).

5. The hydraulically broken hammer housing with improved structure according to claim 1, characterized in that, The anti-rotation through hole (7) is arranged on the left clamping plate (4). An anti-rotation notch (8) with a leftward opening is arranged at the left screw part (64). The length of the anti-rotation notch (8) is the same as the thickness of the left clamping plate (4).

6. The hydraulically-driven breaker housing with improved structure according to claim 4, wherein, The shaft diameters of the right screw part (62) and the left screw part (64) are the same, and both are larger than the shaft diameters of the middle screw part (63) and the threaded part (65).

7. The hydraulically-driven breaker housing with improved structure according to claim 5 or 6, characterized in that, A washer is clamped between the nut part (61) and the right side plate (3), and a washer is clamped between the nut (66) and the left side plate (2).

8. The hydraulically driven breaker housing with improved structure according to claim 1, wherein, An anti-rotation through hole (7) is formed on the left side plate (2). The nut (66) of the wall panel bolt (6) is convex, having a large-diameter part (661) and a small-diameter part (662). An anti-rotation notch (8) is arranged on the outer wall of the small-diameter part (662). The small-diameter part (662) can be inserted into the anti-rotation through hole (7), and the anti-rotation notch (8) abuts against the anti-rotation platform (71) to limit the rotation of the nut (66). The right end of the large-diameter part (661) abuts against the outer wall of the left side plate (2).

9. The hydraulically driven breaker housing with improved structure as claimed in claim 8, wherein, The nut part (61) of the wall panel bolt (6) is a hexagonal nut. The center of the nut (66) is a through hole for the threaded part (65) to pass through and connect. The inner wall of the hole of the large-diameter part (661) has internal threads. Force is applied from the nut part (61) to screw the threaded part (65) and the nut (66) tightly together to form an integral body.

10. The hydraulically-driven breaker housing with improved structure according to claim 9, characterized in that, A washer is clamped between the nut part (61) and the right side plate (3).

Images