A breaker tooth, jaw plate and pulverizing jaw device

Abstract

The utility model relates to the technical field of engineering machinery, concretely relates to a break tooth, pincer tooth plate and smashing pincer device, include: main break part, it includes first reinforcing surface and second reinforcing surface, both front side edge connection form first break sharp edge, auxiliary break part, it includes first dispersing surface and second dispersing surface, first dispersing surface is located first reinforcing surface rear side and both connection form second break sharp edge, second dispersing surface is located second reinforcing surface rear side and both connection form third break sharp edge, first dispersing surface and second dispersing surface upper side edge connection form fourth break sharp edge, support part, it includes support surface. Through above setting, the size of concrete block after smashing is uniform, the size of block after smashing 5-20cm accounts for >85%, effectively avoid the problem that the material is jammed and the subsequent concrete block smashing is influenced due to the accumulation of concrete block, and the compression resistance is improved by 30%, effectively prolongs the service life.

Description

Technical Field

[0001] This utility model relates to a crushing tooth, a clamping tooth plate, and a crushing clamp device, belonging to the field of engineering machinery technology. Background Technology

[0002] Hydraulic shredders, as a common type of engineering machinery, are widely used in building demolition. During use, their shredding efficiency and service life are always key concerns for users. However, existing shredders have been found to have the following technical shortcomings: First, their shredding effect is poor, producing unevenly sized concrete fragments with a high proportion of large pieces, often requiring secondary shredding. This results in low shredding efficiency, and the existing shredders generate a large amount of dust during operation, leading to dust pollution in the working environment. Second, their service life is short, and the structure of the shredding area is prone to cracking or breakage due to stress concentration. Therefore, researching a new type of crushing tooth, jaw plate, and shredding device is of great practical significance. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a device for breaking teeth, clamping plates, and crushing pliers.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a breaking tooth, wherein the breaking tooth is a solid structure integrally cast, comprising:

[0005] The main breaking section includes a first reinforcing surface and a second reinforcing surface that are structurally identical and symmetrically arranged with respect to the neutral surface of the breaking teeth. The projections of the first reinforcing surface and the second reinforcing surface onto the neutral surface are both triangular, and their front edges are connected to form a first breaking edge. The first breaking edge is located on the neutral surface.

[0006] The auxiliary breaking section includes a first evacuation surface and a second evacuation surface that are structurally identical and symmetrically arranged with respect to the neutral surface of the breaking teeth. The first evacuation surface is located behind the first reinforcing surface and the two are connected to form a second breaking edge. The second evacuation surface is located behind the second reinforcing surface and the two are connected to form a third breaking edge. The upper edges of the first evacuation surface and the second evacuation surface are connected to form a fourth breaking edge. The fourth breaking edge is located on the neutral surface. The ends of the first breaking edge, the second breaking edge, the third breaking edge and the fourth breaking edge intersect at a point to form a main breaking point.

[0007] A support portion includes a support surface located behind a first evacuation surface and a second evacuation surface, with the two side edges of the support surface connected to the first evacuation surface and the second evacuation surface, respectively.

[0008] Furthermore, both the second and third breaking points are arc-shaped structures that protrude toward the main breaking part.

[0009] Furthermore, the angle between the first reinforcing surface and the second reinforcing surface is 50-65 degrees.

[0010] Furthermore, the fourth breaking edge is arranged in parallel, and the angle α1 between the first breaking edge and the plane where the bottom of the breaking tooth is located is 55-60 degrees.

[0011] Furthermore, the relationship between the angle α2 between the supporting surface and the plane where the bottom of the breaking tooth is located and the angle α1 between the first breaking edge and the plane where the bottom of the breaking tooth is located satisfies α2=(1.2-1.3)α1.

[0012] Furthermore, the first evacuation surface and / or the second evacuation surface includes a first inclined surface and a second inclined surface with different inclination angles, wherein the first inclined surface is close to the fourth breaking edge, the first inclined surface has a first inclination angle with the neutral surface, and the second inclined surface has a second inclination angle with the neutral surface;

[0013] The first tilt angle is greater than the second tilt angle and the difference between the two is not greater than 10°.

[0014] Furthermore, the length L1 of the first breaking edge is 1.6-1.8 times the length L2 of the fourth breaking edge.

[0015] This utility model also provides a pincer plate, including the aforementioned breaking teeth. The front side of the breaking teeth is provided with axe teeth and the neutral surfaces of the two are coplanar. Multiple side teeth with the same structure are arranged in an array on both sides of the breaking teeth. The main breaking part is located at the center of the area enclosed by the four side teeth on its periphery.

[0016] Furthermore, the vertical height from the highest point of the axe tooth to the surface of the pincer plate is: the vertical height from the highest point of the breaking tooth to the surface of the pincer plate is: the vertical height from the highest point of the side tooth to the surface of the pincer plate = (2.4-2.5):(1.7-1.8):1.

[0017] This utility model also provides a crushing clamp device, including a fixed jaw and a movable jaw, wherein the movable jaw is equipped with the aforementioned clamping tooth plate.

[0018] The beneficial effects of this utility model are:

[0019] Through the coordinated operation of five surfaces and four breaking edges, this application firstly ensures that the crushed concrete fragments are of uniform size, with fragments ranging from 5 to 20 cm accounting for more than 85%. This avoids both excessively large fragments requiring secondary processing and excessively small fragments causing dust pollution, effectively improving crushing efficiency while ensuring efficient crushing of the concrete blocks to be crushed. Secondly, the above design guides the crushed concrete fragments to be quickly discharged into the edge tooth area of ​​the crushing pliers, effectively preventing material jamming caused by the accumulation of concrete fragments and affecting the crushing of subsequent concrete blocks. Finally, the above design improves the structural strength of the breaking teeth, efficiently guiding stress diffusion. While ensuring crushing efficiency and quality, it increases the compressive strength of the breaking teeth described in this application by 30%, effectively extending their service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of the impact tooth provided in Embodiment 1 of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the impact tooth provided in Embodiment 1 of this utility model from another perspective;

[0022] Figure 3 This is a rear view of the breaking teeth provided in Embodiment 1 of this utility model;

[0023] Figure 4 This is a cross-sectional view of the breaking teeth provided in Embodiment 1 of this utility model;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the pincer plate provided in Embodiment 2 of this utility model;

[0025] Figure 6 This is a three-dimensional structural diagram of the movable jaw and the jaw plate after installation, as provided in Embodiment 3 of this utility model.

[0026] Reference numerals: 01, breaking tooth; 1, first reinforcing surface; 2, second reinforcing surface; 3, first breaking edge; 4, first evacuation surface; 5, second evacuation surface; 6, second breaking edge; 7, third breaking edge; 8, fourth breaking edge; 9, main bursting point; 10, supporting surface; 11, first inclined surface; 12, second inclined surface; 13, axe tooth; 14, edge tooth; 15, pincer tooth plate; 16, movable jaw. Detailed Implementation

[0027] The specific embodiments of this utility model are described in detail below. This utility model can be implemented in many ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used is for describing particular embodiments only and is not intended to limit the scope of this invention.

[0029] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "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.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Example 1

[0032] like Figure 1-4 As shown, this utility model provides a breaking tooth. To ensure structural strength and integrity, the breaking tooth 01 is a solid structure integrally cast, including: a main breaking part, which includes a first reinforcing surface 1 and a second reinforcing surface 2 that are structurally identical and symmetrically arranged with respect to the neutral surface of the breaking tooth 01. The projections of the first reinforcing surface 1 and the second reinforcing surface 2 onto the neutral surface are both triangular, and their front edges are connected to form a first breaking edge 3. The first breaking edge 3 is located on the neutral surface. It can be understood that, as Figure 1As shown in Figure 2, both the first reinforcing surface 1 and the second reinforcing surface 2 are approximately triangular in shape. To improve the crushing effect, multiple reinforcing ridges are provided on the surfaces of the first reinforcing surface 1 and the second reinforcing surface 2. The auxiliary crushing part includes a first evacuation surface 4 and a second evacuation surface 5 with the same structure and symmetrically arranged with respect to the neutral surface of the crushing teeth. The first evacuation surface 4 is located behind the first reinforcing surface 1 and the two are connected to form a second crushing edge 6. The second evacuation surface 5 is located behind the second reinforcing surface 2 and the two are connected to form a third crushing edge 7. The upper edges of the first evacuation surface 4 and the second evacuation surface 5 are connected to form a fourth crushing edge 8. The breaking edge 8 is located on the neutral surface. The ends of the first breaking edge 3, the second breaking edge 6, the third breaking edge 7, and the fourth breaking edge 8 intersect at a point to form the main bursting point 9. The support part includes a support surface 10, which is located behind the first evacuation surface 4 and the second evacuation surface 5, and the two side edges of the support surface 10 are respectively connected to the first evacuation surface 4 and the second evacuation surface 5. It should be noted that in the attached figure, a protruding boss is provided below the breaking tooth and around the periphery of the breaking tooth. This boss is used to strengthen the connection strength between the breaking tooth and the pincer plate. This is common knowledge to those skilled in the art and will not be described in detail here.

[0033] During the crushing process, the axe teeth 13 on the jaw plate first contact the concrete block to be crushed for initial crushing, generating initial cracks. Subsequently, the breaking teeth 01 contact the concrete block to be crushed for secondary crushing. The first breaking edge 3 and the main bursting point 9 impact the concrete block to be crushed. Because the first breaking edge 3 is located on the neutral plane and is inclined, it can withstand the impact force and transmit the force to both sides, effectively ensuring the service life of the first breaking edge 3. After the first breaking edge 3 impacts the concrete block, the main bursting point 9 subsequently contacts the concrete block. The main bursting point 9 and the concrete block... The concrete block generates extremely high compressive stress upon contact, causing it to burst at that point. As the crushing pliers continue to engage, the concrete block comes into contact with the auxiliary crushing section. The second and third crushing blades 6 and 7 generate lateral splitting forces, guiding the cracks to extend to the left and right sides. Simultaneously, the fourth crushing blade 8 vertically splits the concrete block. Thus, the concrete block is split in multiple directions. The broken concrete block is guided to the side teeth 14 area through the first and second evacuation surfaces 4 and 5, and then crushed three times by the side teeth 14.

[0034] Through the coordinated operation of the five surfaces and four breaking edges, this application firstly ensures that the crushed concrete fragments are of uniform size, with fragments ranging from 5 to 20 cm accounting for more than 85% of the total. This avoids both excessively large fragments requiring secondary processing and excessively small fragments causing dust pollution, effectively improving crushing efficiency while ensuring efficient crushing of the concrete blocks to be crushed. Secondly, the above design guides the crushed concrete fragments to be quickly discharged into the edge teeth 14 area of ​​the crushing pliers, effectively preventing material jamming caused by the accumulation of concrete fragments and affecting the crushing of subsequent concrete blocks. Finally, the above design improves the structural strength of the breaking teeth 01, efficiently guiding stress diffusion. While ensuring crushing efficiency and quality, it increases the compressive strength of the breaking teeth 01 described in this application by 30%, effectively extending its service life.

[0035] Specifically, such as Figure 1-2 As shown, both the second breaking edge 6 and the third breaking edge 7 are arc-shaped structures protruding towards the main breaking part. This design converts the impact force borne by the second breaking edge 6 and the third breaking edge 7 into shear stress evenly distributed along the arc, significantly reducing cracks or breakage caused by stress concentration in the second breaking edge 6 and the third breaking edge 7, further extending their service life. Furthermore, by setting them as arc-shaped structures, the concrete fragments generated in the initial impact process of the first breaking edge 3 and the main breaking point 9 can be guided to slide tangentially, and work in conjunction with the edge teeth 14 on the jaw plate to rapidly perform three-stage crushing, preventing the initial fragments from affecting subsequent crushing operations.

[0036] Specifically, the angle between the first reinforcing surface 1 and the second reinforcing surface 2 is 50-65 degrees. This setting can constrain the direction of impact crack propagation in the concrete block to be crushed, ensure the uniform size of the crushed concrete fragments, and reduce the hydraulic pressure requirements during the crushing process. It avoids the problem that if the angle is too small, the first breaking edge 3 will embed too deeply into the concrete block to be crushed, failing to guide the concrete block to generate diffusion cracks and thus affecting subsequent crushing. It also avoids the problem that if the angle is too large, the impact force will be too dispersed, requiring higher hydraulic pressure to uniformly crush the concrete fragments.

[0037] Specifically, such as Figure 4As shown, the fourth crushing edge 8 is arranged in parallel, and the angle α1 between the first crushing edge 3 and the plane where the bottom of the crushing tooth 01 is located is 55-60 degrees. Limiting the inclination angle of the first crushing edge 3 is crucial, directly affecting the crushing effect and service life. Within this angle range, firstly, the hydraulic impact force can act approximately perpendicularly on the concrete surface, allowing the impact energy to be transferred to the concrete block to be crushed without damage, increasing the hydraulic impact force utilization rate to 95%. Under the same hydraulic impact force conditions, the crushing depth increases by 40%. If α1 is less than 55 degrees, the normal impact component will be attenuated, resulting in insufficient crushing depth, which in turn leads to thickening of the interlayer in the uncrushed concrete block, affecting the crushing effect. If α1 is greater than 60 degrees, the gap between the crushing tooth 01 and the axe tooth 13 is too large. The narrow angle makes it difficult to effectively guide the movement of the crushed concrete blocks, easily causing the crushed concrete fragments to get stuck directly in the gap between the two, increasing the jamming rate by 30%. Secondly, with this angle setting, as the crushing clamps gradually engage, the angle between the impact force from the concrete block to be crushed and the normal direction of the force-bearing surface of the first crushing edge 3 becomes smaller, which can effectively decompose the impact force from the concrete block to be crushed, avoid local stress concentration in the first crushing edge 3, and ensure service life. Furthermore, this angle setting, in conjunction with the angle between the first reinforcing surface 1 and the second reinforcing surface 2, makes the main crushing part form an acute-angled triangular structure, which can further enhance the impact resistance and thus further ensure service life.

[0038] Specifically, such as Figure 4 As shown, the angle α2 between the supporting surface 10 and the plane where the bottom of the crushing tooth 01 is located, and the angle α1 between the first crushing tip 3 and the plane where the bottom of the crushing tooth 01 is located, satisfy α2 = (1.2-1.3)α1. The supporting surface 10 serves as a force support component for the structure under pressure during the crushing process. This setting ensures that the supporting surface 10 is inclined towards the direction of the first crushing tip 3. When the first crushing tooth 01 contacts the concrete block to be crushed, the pressure is transmitted through the first crushing tooth 01 to the supporting surface 10. The supporting surface 10 under pressure will also generate a reaction force along its normal direction, thereby limiting the maximum stress area to the lower middle region inside the crushing tooth 01. This effectively avoids the problem of pressure damage to the surface of the crushing tooth 01. If α2 is too small, it will cause the supporting surface 10 to tilt excessively, and the root is very prone to crack damage due to stress concentration during the crushing pressure process.

[0039] Specifically, such as Figure 3 As shown, the first evacuation surface 4 and / or the second evacuation surface 5 include a first inclined surface 11 and a second inclined surface 12 with different inclination angles. The first inclined surface 11 is close to the fourth breaking edge 8, and the first inclined surface 11 has a first inclination angle β1 with the neutral surface. The second inclined surface 12 has a second inclination angle β2 with the neutral surface. The first inclination angle β1 is greater than the second inclination angle β2, and the difference between the two is not greater than 10°. It should be noted that... Figure 3 The dashed lines shown represent the edges of the neutral surface. This design adapts to the movement of concrete fragments, guiding the fragments crushed by the fourth crushing blade 8 to be discharged quickly and smoothly into the edge tooth 14 area, preventing fragments from accumulating near the fourth crushing blade 8. Because the initial velocity of the crushed concrete fragments is relatively high and the direction is unstable, the first inclined surface 11 is set at the initial contact position of the concrete fragments, and its large inclination angle is matched with the initial movement direction of the concrete fragments to quickly change the movement direction of the concrete fragments. After the concrete fragments are guided by the first inclined surface 11, the velocity has stabilized, but they still need to be smoothly guided to the subsequent edge tooth 14 area. The second inclined surface 12 can slow down the movement speed of the concrete fragments and smoothly guide them to be discharged into the edge tooth 14 area of ​​the clamping plate. By controlling the inclination angle difference, the problem of concrete fragments colliding and splashing caused by sudden angle changes can be avoided.

[0040] Specifically, such as Figure 2 As shown, the length L1 of the first crushing tip 3 is 1.6-1.8 times the length L2 of the fourth crushing tip 8. The first crushing tip 3, as the main crushing part in the crushing tooth 01, bears most of the hydraulic impact force. This design allows the first crushing tip 3 to cut into the concrete block to be crushed to a sufficient depth, ensuring that the cracks can fully extend to the reinforcing steel layer. The fourth crushing tip 8, as the final step in the crushing process, is used to crush the unbroken layer at the top of the concrete block. This parameter limitation restricts the timing of the fourth crushing tip 8's intervention in the crushing process, ensuring that the top concrete is effectively crushed while preventing the hydraulic impact force from being prematurely diverted by the fourth crushing tip 8, thus preventing the first crushing tip 3 from cutting into the required depth.

[0041] Example 2

[0042] like Figure 5As shown, this utility model also provides a pincer plate, including the crushing teeth 01 described in Embodiment 1. The crushing teeth 01 have axe teeth 13 on their front side, with their neutral surfaces coplanar. Multiple arrayed and structurally identical side teeth 14 are respectively arranged on both sides of the crushing teeth 01. The main crushing part is located at the center of the area enclosed by the four side teeth 14 on its periphery. With this arrangement, during crushing, the axe teeth 13 perform the initial crushing, the crushing teeth 01 perform the secondary crushing, and the side teeth 14 perform the tertiary crushing, allowing the crushing pincers to complete three stages of progressive crushing in a single engagement, greatly improving crushing efficiency. Furthermore, by placing the main crushing part at the center of the area enclosed by the side teeth 14, it further avoids the accumulation of concrete fragments, ensuring that concrete fragments are quickly discharged to the area of ​​the side teeth 14 for tertiary crushing. Preferably, the vertical height from the highest point of the axe tooth to the surface of the clamp tooth plate: the vertical height from the highest point of the breaking tooth to the surface of the clamp tooth plate: the vertical height from the highest point of the side tooth to the surface of the clamp tooth plate = (2.4-2.5):(1.7-1.8):1. This arrangement creates a stepped height difference between the axe tooth 13, the breaking tooth 01, and the side tooth 14. Combined with the three-stage progressive crushing by the crushing clamp, this improves crushing efficiency while further ensuring the uniformity of concrete fragment size.

[0043] Example 3

[0044] like Figure 6 As shown, this utility model also provides a crushing clamp device, including a fixed jaw and a movable jaw 16. The movable jaw 16 is equipped with the clamping tooth plate 15 described in Embodiment 2. It should be noted that the attached drawings only show a schematic diagram of the movable jaw and the clamping tooth plate after installation. Since the fixed jaw is common knowledge in the field, it is not shown in the attached drawings.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are exhaustively listed. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] For those skilled in the art, various modifications and improvements can be made without departing from the concept of this utility model, and these modifications and improvements are all within the protection scope of this utility model. The protection scope of this utility model is defined by the appended claims.

Claims

1. A type of impact-breaking tooth, characterized in that, The breaking teeth are integrally cast solid structures, including: The main breaking section includes a first reinforcing surface and a second reinforcing surface that are structurally identical and symmetrically arranged with respect to the neutral surface of the breaking teeth. The projections of the first reinforcing surface and the second reinforcing surface onto the neutral surface are both triangular, and their front edges are connected to form a first breaking edge. The first breaking edge is located on the neutral surface. The auxiliary breaking section includes a first evacuation surface and a second evacuation surface that are structurally identical and symmetrically arranged with respect to the neutral surface of the breaking teeth. The first evacuation surface is located behind the first reinforcing surface and the two are connected to form a second breaking edge. The second evacuation surface is located behind the second reinforcing surface and the two are connected to form a third breaking edge. The upper edges of the first evacuation surface and the second evacuation surface are connected to form a fourth breaking edge. The fourth breaking edge is located on the neutral surface. The ends of the first breaking edge, the second breaking edge, the third breaking edge and the fourth breaking edge intersect at a point to form a main breaking point. A support portion includes a support surface located behind a first evacuation surface and a second evacuation surface, with the two side edges of the support surface connected to the first evacuation surface and the second evacuation surface, respectively.

2. The impact-breaking tooth according to claim 1, characterized in that, Both the second and third breaking points are arc-shaped structures protruding towards the main breaking part.

3. A breaking tooth according to claim 2, characterized in that, The angle between the first reinforcing surface and the second reinforcing surface is 50-65 degrees.

4. A breaking tooth according to claim 3, characterized in that, The fourth breaking edge is arranged in parallel, and the angle α1 between the first breaking edge and the plane where the bottom of the breaking tooth is located is 55-60 degrees.

5. A breaking tooth according to claim 4, characterized in that, The relationship between the angle α2 between the supporting surface and the plane where the bottom of the breaking tooth is located and the angle α1 between the first breaking edge and the plane where the bottom of the breaking tooth is located satisfies α2=(1.2-1.3)α1.

6. A breaking tooth according to claim 5, characterized in that, The first evacuation surface and / or the second evacuation surface includes a first inclined surface and a second inclined surface with different inclination angles, wherein the first inclined surface is close to the fourth breaking edge, the first inclined surface has a first inclination angle with the neutral surface, and the second inclined surface has a second inclination angle with the neutral surface; The first tilt angle is greater than the second tilt angle and the difference between the two is not greater than 10°.

7. A breaking tooth according to claim 1, characterized in that, The length of the first breaking edge L1 is 1.6-1.8 times the length of the fourth breaking edge L2.

8. A pincer-tooth plate, characterized in that, Includes the breaking teeth as described in any one of claims 1-7, wherein the front side of the breaking teeth is provided with axe teeth and the neutral surfaces of the two are coplanar, and multiple side teeth with the same structure are arranged in an array on both sides of the breaking teeth, and the main breaking part is located at the center of the area enclosed by the four side teeth on its periphery.

9. A pincer-tooth plate according to claim 8, characterized in that, The vertical height from the highest point of the axe tooth to the surface of the pincer plate: the vertical height from the highest point of the breaking tooth to the surface of the pincer plate: the vertical height from the highest point of the side tooth to the surface of the pincer plate = (2.4-2.5):(1.7-1.8):

1.

10. A crushing clamp device, comprising a fixed jaw and a movable jaw, characterized in that, The movable jaw is equipped with a jaw plate as described in any one of claims 8-9.

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