Crushing tooth for crushing hardened materials and excavator

Abstract

The utility model provides a crushing tooth for crushing hardened materials and an excavator, relates to the field of crushing teeth, and adopts the technical scheme that the crushing tooth comprises a crushing tooth body, a crushing part is arranged at the lower part of the crushing tooth body, and the crushing tooth body is connected with the crushing part through a connecting bolt; the axis direction of the connecting bolt is perpendicular to the length direction of the crushing tooth body, the upper end of the crushing piece abuts against the lower end of the crushing tooth body, and the thickness of the crushing piece is gradually reduced in the crushing force application direction of the crushing tooth body. The maintenance cost is low, the time for maintaining and replacing related parts is short, and the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the field of crushing teeth, in particular to a crushing tooth and an excavator for crushing compacted materials. Background Art

[0002] In the bulk cargo loading process at ports, it is necessary to break up compacted cargoes such as salt for transportation and ship loading and unloading. At present, most of the crushing operations in industrial and mining enterprises use excavators, and most of the excavators use hydraulic breakers to break hard objects such as rocks and concrete. However, when hydraulic breakers are used to break up compacted but not hard materials, they can only make holes in the materials but cannot quickly break up large pieces of compacted but not hard materials. Therefore, they are not suitable for breaking up compacted materials, which affects the effect and speed of breaking up compacted materials.

[0003] In the prior art, in order to more effectively crush the compacted materials, the Chinese utility model patent with the authorization announcement number CN211774108U discloses an excavator working tooth, which is composed of a digging tooth, a connecting rod, and a connecting sleeve. There are multiple digging teeth, and the multiple digging teeth are arranged in parallel. The multiple digging teeth are connected by multiple connecting rods, and the multiple connecting rods are placed in parallel. The multiple connecting rods are perpendicular to the multiple digging teeth. The connecting sleeve is fixedly connected to the upper end of the middle digging tooth, and the connecting sleeve is connected to the lower end of the digging rod of the excavator. The upper part of the digging tooth is a horizontal plate, and the lower part is a curved plate. The lower end of the curved plate is sharp. There are connecting holes on the plate surfaces of the upper horizontal plate and the lower curved plate of the digging tooth, respectively. The plate surfaces of the multiple digging teeth are parallel to each other, and the multiple connecting rods connect the multiple digging teeth into one through the connecting holes on the plate surfaces of the multiple digging teeth. Through this technical solution, it is possible to replace the traditional bucket or breaker to quickly crush the compacted but not hard materials, which significantly improves the working efficiency.

[0004] Although the above technical solution can improve the crushing efficiency of compacted materials, the crushing is carried out through the sharp structure at the lower end of the curved part, which is a stress concentration point. As the use time increases, the sharp part will inevitably wear, deform or even break. Since the sharp part, the curved part and the cross plate are all integrated structures, the entire excavating tooth needs to be replaced. On the one hand, it causes high maintenance costs. On the other hand, it takes a long time to replace the excavating teeth, which affects the crushing efficiency. Utility Model Content

[0005] In order to solve the technical problems in the above-mentioned prior art, the utility model provides a crushing tooth and an excavator for crushing compacted materials, which has low maintenance cost and short maintenance and replacement time of related parts, which is conducive to improving work efficiency.

[0006] In the first aspect, the utility model provides a crushing tooth for crushing compacted materials to solve the above technical problems, including a crushing tooth body, a crushing piece is arranged at the lower part of the crushing tooth body, the crushing tooth body is connected to the crushing piece by a connecting bolt, the axial direction of the connecting bolt is perpendicular to the length direction of the crushing piece, the upper end of the crushing piece is in contact with the lower end of the crushing tooth body, and the thickness of the crushing piece gradually decreases along the crushing force direction of the crushing tooth body. By detachably mounting the crushing piece on the crushing tooth body, the crushing piece can be replaced without replacing the entire crushing tooth after the crushing piece is worn, deformed or even broken, saving costs, and at the same time, the replacement is convenient and efficient through the connecting bolt.

[0007] Furthermore, the crushing member includes a connecting portion and a crushing portion, a connecting head is provided at the lower part of the crushing tooth body, a connecting hole is provided on the connecting head, the axis of the connecting hole is perpendicular to the axis of the connecting head, a connecting groove is provided on the connecting portion, the connecting head can be inserted into the connecting groove, the connecting portion is provided with the connecting bolt, and the connecting bolt passes through the connecting groove and the connecting hole. By providing the connecting head and the connecting groove for connection, the crushing member can be supported over a long distance to prevent it from shaking under force and affecting the crushing effect.

[0008] Furthermore, the width of the crushing part is d1, the maximum thickness of the crushing part is d2, d1>d2, and raised reinforcing ribs are arranged on two wide surfaces of the crushing part. The strength of the crushing part is enhanced by arranging the reinforcing ribs.

[0009] Furthermore, both sides of the reinforcing rib are provided with crushing grooves, and the bottom of the crushing grooves is provided with at least three crushing bosses, and the length direction of the crushing bosses is perpendicular to the length direction of the crushing grooves. By providing crushing grooves and crushing bosses, the impact and vibration effect on the compacted materials can be enhanced, the crushing effect can be improved, and the working efficiency can be improved.

[0010] Furthermore, the connecting part is in a triangular prism structure, the crushing part is in a wedge-shaped structure, and the center line of the connecting part is collinear with the center line of the crushing part. By arranging the center lines of the connecting part and the crushing part collinearly, it is ensured that the crushing parts are evenly stressed, the load is evenly distributed, and stress concentration is not likely to occur.

[0011] Furthermore, chamfers are provided on both sides of the lower end of the crushing part. The chamfers are provided to enhance the pressure of the lower end of the crushing part on the material, so that the crushing piece can be easily extended into the compacted material.

[0012] Furthermore, the crushing tooth body is a quadrangular pyramid structure with the narrow end facing downwards. By setting the crushing tooth body to a quadrangular pyramid structure with a gradual thickness, its strength can be enhanced to prevent breakage.

[0013] Furthermore, a connecting seat is arranged at the upper end of the crushing tooth body, and a small arm pin shaft and a cylinder pin shaft are arranged in parallel in the connecting seat.

[0014] Furthermore, a transitional curved surface is provided on the surface of the crushing tooth body and the cylinder pin shaft on the same side, and the transitional curved surface is located at the connection between the crushing tooth body and the connecting seat. The strength of the crushing tooth body is further enhanced by providing the transitional curved surface.

[0015] In the second aspect, the utility model provides an excavator, including a forearm, on which a bucket cylinder is arranged, and also includes the above-mentioned crushing teeth for crushing compacted materials, the lower end of the forearm is rotatably connected to the forearm pin shaft, the bucket cylinder is connected to the cylinder pin shaft through a connecting rod 1, the connecting rod 1 is rotatably connected to the cylinder pin shaft, and the two ends of the connecting rod 1 are rotatably connected to the forearm through a connecting rod 2.

[0016] It can be seen from the above technical solutions that the utility model has the following advantages:

[0017] The utility model provides a crushing tooth and an excavator for crushing compacted materials. By detachably mounting the crushing parts on the crushing tooth body, the crushing parts can be replaced after being worn, deformed or even broken without replacing the entire crushing tooth, thus saving costs. At the same time, the replacement is performed through connecting bolts, which is convenient and efficient. By arranging a connecting head and a connecting groove for connection, the crushing parts can be supported over a long distance to prevent them from shaking under force and affecting the crushing effect. The strength of the crushing part is enhanced by arranging reinforcing ribs. By arranging a crushing groove and a crushing boss, the impact and vibration effects on compacted materials can be enhanced, the crushing effect can be improved, and the working efficiency can be improved. By arranging the center lines of the connecting part and the crushing part to be colinear, it is ensured that the crushing parts are subjected to uniform force and the load is evenly distributed, and stress concentration is not prone to occur. By arranging the crushing tooth body into a structure with a gradual thickness of a quadrangular pyramid, its strength can be enhanced to prevent fracture. The strength of the crushing tooth body is further enhanced by arranging a transition curved surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a specific implementation mode 1 of the present utility model.

[0020] Figure 2 It is a schematic diagram of the assembly structure of the crushing member and the crushing tooth body in the first specific implementation mode of the utility model.

[0021] Figure 3 It is a partial structural schematic diagram of a second specific implementation mode of the utility model.

[0022] In the figure, 1, connecting seat; 2, small arm pin; 3, crushing tooth body; 4, crushing part; 401, connecting part; 402, crushing boss; 403, reinforcing rib; 5, connecting bolt; 6, small arm; 7, bucket cylinder; 8, connecting rod two; 9, connecting rod one. DETAILED DESCRIPTION

[0023] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent. Specific implementation method 1

[0025] like Figure 1 As shown, this specific embodiment provides a crushing tooth for crushing hardened materials, including a crushing tooth body 3 and a crushing piece 4; the crushing piece 4 is arranged at the lower part of the crushing tooth body 3, and the crushing tooth body 3 and the crushing piece 4 are connected by a connecting bolt 5, the axial direction of the connecting bolt 5 is perpendicular to the length direction of the crushing piece 4, the upper end of the crushing piece 4 abuts against the lower end of the crushing tooth body 3, and the thickness of the crushing piece 4 gradually decreases along the crushing force direction of the crushing tooth body 3. By detachably mounting the crushing piece 4 on the crushing tooth body 3, the crushing piece 4 can be replaced without replacing the entire crushing tooth after the crushing piece 4 is worn, deformed or even broken, saving costs, and at the same time, the replacement is convenient and efficient through the connecting bolt 5.

[0026] like Figure 2As shown, in this specific embodiment, the crushing member 4 can adopt the following specific structure: the crushing member 4 includes a connecting portion 401 and a crushing portion, the width of the crushing portion is d1, the maximum thickness of the crushing portion is d2, d1>d2, and raised reinforcing ribs 403 are arranged on the two wide surfaces of the crushing portion, and the strength of the crushing portion is enhanced by arranging the reinforcing ribs 403; crushing grooves are arranged on both sides of the reinforcing ribs 403, the bottom of the crushing groove is arc-shaped, and at least three crushing bosses 402 are arranged at the bottom of the crushing groove, and the length direction of the crushing boss 402 is perpendicular to the length direction of the crushing groove. In this specific embodiment, the crushing boss There are five 402s. By setting the crushing grooves and crushing bosses 402, the impact and vibration effect on the compacted material can be enhanced, the crushing effect can be improved, and the working efficiency can be improved; the connecting part 401 is a triangular prism structure, and the crushing part is a wedge-shaped structure. The center line of the connecting part 401 is collinear with the center line of the crushing part. By setting the connecting part 401 and the center line of the crushing part collinearly, it is ensured that the crushing part 4 is evenly stressed and the load is evenly distributed, and stress concentration is not prone to occur; chamfers are set on both sides of the lower end of the crushing part. By setting the chamfers, the pressure of the lower end of the crushing part on the material is enhanced, so that the crushing part 4 is convenient to extend into the compacted material.

[0027] like Figure 1 and Figure 2 As shown, in order to ensure the strength of the crushing tooth body 3, the crushing tooth body 3 is a quadrangular pyramid structure with the narrow end facing downward. By setting the crushing tooth body 3 into a quadrangular pyramid structure with a gradual thickness, its strength can be enhanced to prevent breakage. In order to facilitate the installation of the crushing tooth, a connecting seat 1 is provided at the upper end of the crushing tooth body 3, and a small arm pin 2 and a cylinder pin are arranged in parallel in the connecting seat 1. A transition arc surface is provided on the surface of the crushing tooth body 3 and the cylinder pin on the same side, and the transition arc surface is located at the connection between the crushing tooth body 3 and the connecting seat 1. The strength of the crushing tooth body 3 is further enhanced by setting the transition curved surface.

[0028] In order to enhance the supporting strength of the crushing tooth body 3 to the crushing member 4, in the present specific embodiment, a connecting head is provided at the lower part of the crushing tooth body 3, a connecting hole is provided on the connecting head, the axis of the connecting hole is perpendicular to the axis of the connecting head, a connecting groove is provided on the connecting part 401, the connecting head can be inserted into the connecting groove, and a connecting bolt 5 is provided on the connecting part 401, and the connecting bolt 5 passes through the connecting groove and the connecting hole. Specific implementation method 2

[0030] like Figure 3As shown, this specific embodiment provides an excavator, including a forearm 6, on which a bucket cylinder 7 is arranged, and also includes the crushing teeth for crushing compacted materials of the specific embodiment one, the lower end of the forearm 6 is rotatably connected to the forearm pin 2 through a bushing, the bucket cylinder 7 is connected to the cylinder pin through a connecting rod 9, the connecting rod 9 is rotatably connected to the cylinder pin through a bushing, and both ends of the connecting rod 9 are rotatably connected to the forearm 6 through connecting rods 8 through bushings.

[0031] When in use, the crushing teeth for crushing compacted materials can be replaced with the bucket for installation.

[0032] From the above specific implementations, it can be seen that the utility model has the following beneficial effects:

[0033] 1. By detachably mounting the crushing element 4 on the crushing tooth body 3, the crushing element 4 can be replaced after being worn, deformed or even broken without replacing the entire crushing tooth, thus saving costs. Meanwhile, the replacement can be performed through the connecting bolts 5, which is convenient and efficient.

[0034] 2. By providing a connecting head and a connecting groove for connection, the crushing element 4 can be supported over a long distance to prevent it from shaking under force and affecting the crushing effect;

[0035] 3. The strength of the crushing part is enhanced by providing reinforcing ribs 403;

[0036] 4. The provision of the crushing groove and the crushing boss 402 can enhance the impact and vibration effect on the compacted material, thereby improving the crushing effect and the operating efficiency;

[0037] 5. By arranging the connecting part 401 and the center line of the crushing part in a colinear manner, the crushing part 4 is ensured to be evenly stressed and the load is evenly distributed, and stress concentration is not likely to occur;

[0038] 6. By setting the crushing tooth body 3 into a structure with a gradual thickness of a quadrangular pyramid, its strength can be enhanced to prevent breakage;

[0039] 7. The strength of the crushing tooth body 3 is further enhanced by setting a transition curved surface.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A crushing tooth for crushing compacted materials, comprising a crushing tooth body (3), characterized in that: A crushing piece (4) is arranged at the lower part of the crushing tooth body (3); the crushing tooth body (3) and the crushing piece (4) are connected by a connecting bolt (5); the axial direction of the connecting bolt (5) is perpendicular to the length direction of the crushing piece (4); the upper end of the crushing piece (4) abuts against the lower end of the crushing tooth body (3); and the thickness of the crushing piece (4) gradually decreases along the crushing force direction of the crushing tooth body (3).

2. The crushing tooth for crushing compacted materials according to claim 1, characterized in that: The crushing member (4) comprises a connecting portion (401) and a crushing portion. A connecting head is provided at the lower portion of the crushing tooth body (3). A connecting hole is provided on the connecting head. The axis of the connecting hole is perpendicular to the axis of the connecting head. A connecting groove is provided on the connecting portion (401). The connecting head can extend into the connecting groove. A connecting bolt (5) is provided on the connecting portion (401). The connecting bolt (5) passes through the connecting groove and the connecting hole.

3. The crushing tooth for crushing compacted materials according to claim 2, characterized in that: The width of the crushing part is d1, the maximum thickness of the crushing part is d2, d1>d2, and raised reinforcing ribs (403) are provided on both wide surfaces of the crushing part.

4. The crushing tooth for crushing compacted materials according to claim 3, characterized in that: Crushing grooves are arranged on both sides of the reinforcing rib (403), and at least three crushing bosses (402) are arranged at the bottom of the crushing grooves. The length direction of the crushing bosses (402) is perpendicular to the length direction of the crushing grooves.

5. The crushing tooth for crushing compacted materials according to claim 4, characterized in that: The connecting portion (401) is in a triangular prism structure, the crushing portion is in a wedge-shaped structure, and the center line of the connecting portion (401) is collinear with the center line of the crushing portion.

6. The crushing tooth for crushing compacted materials according to any one of claims 2 to 5, characterized in that: Chamfers are arranged on both sides of the lower end of the crushing part.

7. The crushing tooth for crushing compacted materials according to claim 6, characterized in that: The crushing tooth body (3) is a quadrangular pyramid structure with the narrow end facing downwards.

8. The crushing tooth for crushing compacted materials according to claim 7, characterized in that: A connecting seat (1) is arranged at the upper end of the crushing tooth body (3), and a small arm pin shaft (2) and a cylinder pin shaft are arranged in parallel in the connecting seat (1).

9. The crushing tooth for crushing compacted materials according to claim 8, characterized in that: A transition arc surface is provided on the surface of the crushing tooth body (3) and the cylinder pin shaft on the same side, and the transition arc surface is located at the connection between the crushing tooth body (3) and the connecting seat (1).

10. An excavator, comprising a small arm (6), on which a bucket cylinder (7) is arranged, characterized in that: It also includes a crushing tooth for crushing compacted materials as described in claim 9, the lower end of the arm (6) is rotatably connected to the arm pin (2), the bucket cylinder (7) is connected to the cylinder pin through a connecting rod (9), the connecting rod (9) is rotatably connected to the cylinder pin, and both ends of the connecting rod (9) are rotatably connected to the arm (6) through a connecting rod (8).

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