CN218911575U

CN218911575U - Hydraulic hammer protection device

Info

Publication number: CN218911575U
Application number: CN202223038407.2U
Authority: CN
Inventors: 朱文杰; 魏思航
Original assignee: Jujie Technology Development Group Co ltd
Current assignee: Jujie Technology Development Group Co ltd
Priority date: 2022-11-15
Filing date: 2022-11-15
Publication date: 2023-04-25
Anticipated expiration: 2032-11-15

Abstract

The utility model provides a hydraulic hammer protection device, which comprises a mounting bracket, wherein an upper supporting rod is vertically arranged at the bottom of the mounting bracket, a lower supporting rod and an elastic part are arranged in the upper supporting rod in a sliding manner, a lower supporting ring is fixed at the end part of the lower end of the lower supporting rod, a cylindrical protection mechanism is fixed at the lower end of the lower supporting ring, the protection mechanism comprises a rubber sleeve and a spring arranged in the rubber sleeve, the upper end of the spring is fixedly connected with the lower supporting ring, the hydraulic hammer protection device comprises a first spring section, a second spring section and a third spring section which are sequentially arranged from top to bottom, the first spring section is cylindrical, the second spring section is a special-shaped spring with two large ends and a small middle, and the third spring section is of a cylindrical or conical structure with a small upper end and a large lower end. The hydraulic hammer protection device is compact in structure, convenient to install and good in protection effect, and the use safety of the hydraulic hammer is greatly improved.

Description

Hydraulic hammer protection device

Technical Field

The utility model relates to a hydraulic hammer, in particular to a hydraulic hammer protection device.

Background

The hydraulic hammer is also called as a breaking hammer or a breaker, and is arranged at the position of the excavator or the loader where the bucket is arranged or is arranged, so as to break stones, rocks and the like. The hydraulic breaking hammer has the working principle that the hydraulic pump of the excavator and the loader outputs pressure oil as power, and the piston is controlled to reciprocate through the distributing valve. During the stroke, the rear cavity of the middle cylinder of the breaking hammer is filled with high-pressure hydraulic oil, and the piston impacts the drill rod to break rock under the combined action of compressed nitrogen and high-pressure oil in the upper cylinder; during return stroke, the front cavity of the middle cylinder is communicated with high-pressure oil to push the piston to move backwards and compress nitrogen in the upper cylinder body, so that one working cycle is completed; the piston makes the drill shaft impact to break rock, stone, concrete, etc. through repeated strokes and return strokes.

During operation, the drill shaft at the lower end of the hydraulic hammer collides with the bottom surface to crush the surface of concrete or stone, broken stone particles generated by the collision splash with larger kinetic energy, and the hydraulic hammer has certain potential safety hazards, and is extremely easy to cause injury to surrounding personnel especially during operation in more occasions.

Disclosure of Invention

【1】 Technical problem to be solved

The utility model aims to solve the technical problem of providing the hydraulic hammer protection device which has good fitting degree, can block splashed broken stone and has high use safety.

【2】 Technical proposal for solving the problems

The utility model provides a hydraulic hammer protection device, which comprises a mounting bracket 2 used for being connected with a hydraulic hammer shell 1, wherein a drill shaft hole 210 used for allowing a drill shaft 11 of a hydraulic hammer to pass through is formed in the center of the mounting bracket 2, at least three upper supporting rods 3 are vertically arranged at the bottom of the mounting bracket 2, sliding cavities with lower ends open are formed in the upper supporting rods, a lower supporting rod 4 and an elastic component enabling the lower supporting rod 4 to move downwards are arranged in the sliding cavities in a sliding mode, a lower supporting ring 5 is fixed at the lower end part of the lower supporting rod 4, the lower supporting ring 5 is coaxial with the drill shaft hole 210, a cylindrical protection mechanism 6 is fixed at the lower end of the lower supporting ring 5, the protection mechanism 6 comprises a rubber sleeve and springs arranged in the rubber sleeve, the upper ends of the springs are fixedly connected with the lower supporting ring 5, the springs comprise a first spring section 71, a second spring section 72 and a third spring section 73, the first spring section 71 is a special-shaped spring section 72, the second spring section 72 is a large spring section 72 or a small spring section 73, and the small spring section 73 is a large spring section 73 is arranged at the two ends of the middle section.

Further, the thickness of the rubber outside the second spring section 72 is smaller than the thickness of the rubber outside the first spring section 71 and/or the third spring section 73.

Further, an upper support ring coaxial with the lower support ring is fixed to the lower end of the upper support rod 3.

Further, the axial length of the third spring section 73 is smaller than the axial length of the first and/or

second spring sections

71, 72.

Further, the pitches of the second spring section 72, the first spring section 71 and the third spring section 73 are sequentially reduced.

Further, the inner wall of the protection mechanism 6 is provided with a net-shaped raised stripe.

Further, the mounting bracket comprises a bracket plate 21 with the same shape as the bottom surface of the hydraulic hammer shell, the edge of the bracket plate 21 is bent upwards by 90 degrees to form a limiting part, the top of the limiting part is detachably provided with a pressing plate 22 through a bolt, and a clamping area for being connected with the bottom plate of the hydraulic hammer is formed between the pressing plate 22 and the bracket plate 21.

Further, a rubber layer is arranged between the support plate 21 and the bottom surface of the hydraulic hammer.

Further, the number of the upper supporting rods 3 is four, and the upper supporting rods are respectively positioned at four corners of the hydraulic hammer shell.

【3】 Advantageous effects

The hydraulic hammer protection device is provided with the mounting bracket, can be quickly mounted and dismounted, is convenient and quick to mount, does not need to refit a hydraulic hammer, and has wide application range; the elastic supporting component is arranged, so that certain axial compression can be generated, the fitting degree with the ground is improved, the full contact between the drill shaft and the working surface is not influenced, and the protection effect is good; the protection mechanism capable of generating axial compression and inclination deformation is arranged, so that the fitting degree between the drill rod and the ground during inclination work is ensured, the application angle range is improved, and the use is safe and reliable; the three-section type protection mechanism is arranged, so that the stability and the reliability of bending and compression deformation are improved, and the fitting degree during working is further improved; the gradual change type screw pitch is arranged, so that the reliability and stability of compression deformation are further improved; the rubber sleeve is structurally arranged, so that the protection effect is good, the noise is low, meanwhile, rigid contact between broken stones and springs is avoided, and the use reliability is improved; the hydraulic hammer protection device is compact in structure, convenient to install and good in protection effect, and the use safety of the hydraulic hammer is greatly improved.

Drawings

FIG. 1 is a schematic installation view of a hydraulic hammer protection device of the present utility model;

FIG. 2 is a cross-sectional view of the hydraulic hammer protection device of the present utility model;

FIG. 3 is a schematic view of a hydraulic hammer protection device according to the present utility model in a first use state;

fig. 4 is a schematic structural view of a second use state of the hydraulic hammer protection device of the present utility model.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 4, the present utility model provides a hydraulic hammer protection device, which is installed at the lower end of a hydraulic hammer housing, and includes a mounting bracket 2, wherein the mounting bracket 2 is used for being connected with the hydraulic hammer housing 1, in particular, the mounting bracket includes a bracket plate 21, the shape of the bracket plate 21 is the same as the shape of the bottom surface of the hydraulic hammer housing, a drill shaft hole 210 for allowing a drill shaft 11 on the hydraulic hammer to pass through is provided at the center of the bracket plate 21, the edge of the bracket plate 21 is bent upwards by 90 degrees to form a limiting part, namely, a groove structure is formed at the center of the bracket plate 21, which just accommodates the bottom plate at the bottom of the hydraulic hammer housing, a pressing plate 22 is detachably installed at the top of the limiting part through a bolt, a clamping area is formed between the pressing plate 22 and the bracket plate 21 for being connected with the bottom plate of the hydraulic hammer, and the pressing plate is a bar structure, which can press the bottom plate of the hydraulic hammer, thereby realizing fixed installation; in order to compensate the gap, a certain buffer is formed at the same time, a rubber layer is arranged between the support plate 21 and the bottom surface of the hydraulic hammer, and meanwhile, a rubber layer can be arranged on the lower bottom surface of the pressing plate and the inner wall of the limiting part, so that a certain elastic contact with the hydraulic hammer shell is realized.

At the bottom of the mounting bracket 2, specifically, at least three upper supporting rods 3 are vertically arranged at the bottom of the bracket plate 21, in this embodiment, the four upper supporting rods 3 are respectively positioned at four corners of the hydraulic hammer shell, and the length direction of the upper supporting rods 3 is parallel to the axis of the drill shaft hole; a sliding cavity with an open lower end is formed in the upper supporting rod, namely the upper supporting rod is of a hollow cylindrical structure, the lower supporting rod 4 is arranged in the upper supporting rod in a sliding mode, and meanwhile, an elastic part is arranged in the sliding cavity and is a spring, so that the lower supporting rod 4 has a downward movement trend; the lower end part of the lower supporting rod 4 is fixed with a lower supporting ring 5, the whole lower supporting ring is in a circular ring shape and is coaxially arranged with the drill rod hole, and the lower end of each lower supporting rod 4 is simultaneously fixed on the lower supporting ring; a cylindrical protection mechanism 6 is fixed at the lower end of the lower support ring 5, the protection mechanism is coaxial with the lower support ring 5, the lower end of the protection mechanism is flush with the end part of the drill rod shaft, or is slightly higher than the end part of the drill rod shaft, and the height difference between the two is less than or equal to 10mm.

In order to increase the structural strength, an upper support ring is fixed to the lower end of the upper support bar 3, and is circular and coaxial with the lower support ring.

The protection mechanism 6 in this embodiment includes the rubber sleeve and sets up the spring in the rubber sleeve, the spring is whole to be embedded in the rubber sleeve, the upper end of spring and lower support ring 5 pass through welded fastening connection, it includes first spring section 71 that from top to bottom sets gradually, second spring section 72 and third spring section 73, it is coaxial setting, first spring section 71 is cylindrical, second spring section 72 is the big middle little abnormal shape spring in both ends, third spring section 73 is cylindrical or the big conical structure of upper end tip, when having the contained angle between axis and the ground of borer axle (non-vertical state), when protection mechanism bottom surface one end is pressed, can warp at second spring section part, make third spring section bottom surface produce the slope, avoid producing the gap in protection mechanism bottom surface because the borer axle slope, improve the laminating degree with the ground.

In order to increase the overall structural strength while facilitating deformation in the second spring section portion, the thickness of the rubber outside the second spring section 72 is smaller than the thicknesses of the rubber outside the first and

third spring sections

71, 73 in this embodiment.

In order to achieve a better protection effect, in this embodiment, the axial length of the third spring section 73 is smaller than the axial lengths of the first spring section 71 and the second spring section 72, and preferably, the axial lengths of the second spring section, the first spring section and the third spring section are sequentially reduced, which can increase the overall inclination angle of the protection mechanism and improve the attaching angle.

Meanwhile, in order to concentrate the oblique bending deformation on the second spring section, the pitches of the second spring section 72, the first spring section 71, and the third spring section 73 in this embodiment are sequentially reduced; meanwhile, the inner wall of the protection mechanism 6 is provided with a net-shaped protruding stripe which forms a rough surface and can disperse the force generated by splashed broken stone, so that the service life is prolonged, and meanwhile, the protection mechanism has the function of noise reduction.

The protection device can generate certain deformation, in particular, certain expansion and contraction can be generated between the upper supporting rod 3 and the lower supporting rod, so that axial compression is formed, and the figure 3 is referred to; meanwhile, the protection mechanism can generate certain axial compression and inclination deformation, and referring to fig. 4, the application degree of the rubber sleeve and the ground during operation is improved, the use safety is high, and the protection performance is good.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims

1. A hydraulic hammer protection device, characterized in that: the hydraulic hammer comprises a mounting bracket connected with a hydraulic hammer shell, a drill shaft hole for containing the drill shaft of the hydraulic hammer to pass through is formed in the center of the mounting bracket, at least three upper supporting rods are vertically arranged at the bottom of the mounting bracket, a sliding cavity with an open lower end is formed in the upper supporting rods, a lower supporting rod and an elastic component enabling the lower supporting rod to have a downward movement trend are arranged in the sliding cavity in a sliding mode, a lower supporting ring is fixed at the lower end part of the lower supporting rod, the lower supporting ring is coaxial with the drill shaft hole, a cylindrical protection mechanism is fixed at the lower end of the lower supporting ring, the protection mechanism comprises a rubber sleeve and a spring arranged in the rubber sleeve, the upper end of the spring is fixedly connected with the lower supporting ring, the spring comprises a first spring section, a second spring section and a third spring section which are sequentially arranged from top to bottom, the first spring section is cylindrical, the second spring section is a special-shaped spring with two large ends and a small middle, and the third spring section is of a cylindrical structure or a conical structure with a small upper end and a small end.

2. The hydraulic hammer protection device of claim 1, wherein: the thickness of the rubber outside the second spring section is smaller than the thickness of the rubber outside the first spring section and/or the third spring section.

3. The hydraulic hammer protection device of claim 1, wherein: an upper support ring coaxial with the lower support ring is fixed at the lower end of the upper support rod.

4. The hydraulic hammer protection device of claim 1, wherein: the axial length of the third spring section is smaller than the axial length of the first and/or second spring section.

5. The hydraulic hammer protection device of claim 1, wherein: the pitches of the second spring section, the first spring section and the third spring section are sequentially reduced.

6. The hydraulic hammer protection device of claim 1, wherein: the inner wall of the protection mechanism is provided with reticular raised stripes.

7. The hydraulic hammer protection device of claim 1, wherein: the mounting bracket comprises a bracket plate with the same shape as the bottom surface of the hydraulic hammer shell, the edge of the bracket plate is bent upwards by 90 degrees and forms a limiting part, the top of the limiting part is detachably provided with a pressing plate through a bolt, and a clamping area used for being connected with the bottom plate of the hydraulic hammer is formed between the pressing plate and the bracket plate.

8. The hydraulic hammer protection device of claim 7, wherein: a rubber layer is arranged between the support plate and the bottom surface of the hydraulic hammer.

9. The hydraulic hammer protection device of claim 1, wherein: the upper supporting rods are four and are respectively positioned at four corners of the hydraulic hammer shell.