High-strength excavator cutting board and tooth holder connecting mechanism

Abstract

The utility model relates to a high-strength excavator cutting board and toothholder connecting mechanism which comprises a cutting board and a plurality of toothholders which are detachably fixed on the cutting board and are sequentially arranged at equal intervals from left to right, two pressing blocks which are symmetrically arranged on the upper side and the lower side of the cutting board respectively are outwards formed on the rear sides of the toothholders, and positioning blocks are outwards formed on the front sides of the toothholders. A pin hole is formed between the outer walls of the left and right sides of the positioning block; a limiting groove is formed between the two pressing blocks; a plurality of clamping block combinations which are sequentially arranged at equal intervals from left to right are formed on the cutting board, the number of the clamping block combinations is equal to that of the tooth holders, and each tooth holder is detachably fixed to the corresponding clamping block combination; according to the utility model, the fixing strength between the tooth holder and the cutting board is effectively increased, and a mounting gap can be automatically eliminated so as to effectively avoid looseness; in addition, the disassembly and assembly steps of the tooth holder are simplified, so that the disassembly and assembly efficiency of the tooth holder is improved.

Description

Technical Field

[0001] The utility model relates to a high-strength excavator blade and gear seat connecting mechanism. Background Art

[0002] The blade is an important accessory that is fixed to the bottom edge of the opening of the excavator bucket and can be removed. This is because the blade is equipped with a row of bucket teeth that can enhance the bucket's cutting and digging capabilities. The bucket teeth include a tooth seat and a tooth tip fixed on the tooth seat. The tooth tip is detachably fixed to the tooth seat through a matching pin. When the tooth tip fails due to severe wear, only the tooth tip needs to be replaced.

[0003] The tooth seat and the blade are fixed by welding or threaded fasteners. The tooth seat fixed by welding has high strength, but it is inconvenient to disassemble. The tooth seat can only be removed by cutting, and it is very easy to damage the blade. Although the tooth seat fixed by threaded fasteners is easy to disassemble and assemble, the fixing strength of the two is not high, the installation gap is large, and it is easy to loosen. In addition, since each tooth seat requires at least two sets of threaded fasteners to be effectively fixed on the blade, the operation steps of disassembling and assembling the tooth seat are relatively cumbersome, resulting in low disassembly and assembly efficiency, which needs further improvement. Utility Model Content

[0004] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a high-strength excavator blade and gear seat connection mechanism which effectively increases the fixing strength between the gear seat and the blade and can automatically eliminate the installation gap between the gear seat and the blade to effectively avoid loosening, and also simplifies the disassembly and assembly steps of the gear seat to improve the disassembly and assembly efficiency of the gear seat.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a high-strength excavator blade and tooth seat connection mechanism, including a blade and a plurality of tooth seats detachably fixed on the blade and arranged at equal intervals from left to right, the rear side of the tooth seat is formed with two pressure blocks symmetrically arranged on the upper and lower sides of the blade, and the front side of the tooth seat is formed with a positioning block, and a pin hole is opened between the outer walls of the left and right sides of the positioning block, which is characterized in that:

[0006] A limiting groove is formed between the two pressing blocks, the width of the limiting groove matches the thickness of the blade, and the upper and lower inner walls of the limiting groove are parallel to each other and slide and fit on the upper and lower outer walls of the blade respectively;

[0007] The knife plate is formed with a plurality of clamping block assemblies which are arranged at equal intervals from left to right. Correspondingly, the front outer wall of the knife plate is also provided with the same number of threaded countersunk holes which are arranged at equal intervals from left to right. The number of the clamping block assemblies is equal to the number of the tooth seats, and each of the tooth seats can be detachably fixed to a corresponding clamping block assembly.

[0008] The clamping block assembly comprises two clamping blocks which are respectively arranged on the upper and lower outer walls of the blade and are symmetrically distributed, and each of the threaded countersunk holes is located between the two clamping blocks in a corresponding clamping block assembly; a symmetrically distributed limiting cavity is provided on the front outer walls of the two clamping blocks, and the inner wall of one side of each limiting cavity close to the blade is flush with the corresponding outer wall of the blade where it is located;

[0009] The two pressing blocks on the gear seat are respectively inserted into the limiting cavities on the two clamping blocks, and the left and right outer walls of each pressing block are respectively slidably fitted on the left and right inner walls of a corresponding limiting cavity;

[0010] On the left and right inner walls of each of the limiting cavities, a plurality of convex strips are formed toward the inside of the limiting cavities, which are arranged laterally and distributed in parallel from top to bottom. Correspondingly, on the left and right outer walls of each of the pressing blocks, the same number of grooves are formed, which are distributed in parallel from top to bottom. Each of the convex strips is movably inserted into a corresponding groove.

[0011] Preferably, a first inclined surface symmetrically arranged with respect to each other is formed on the outer wall of the two pressure blocks on the side opposite to the limiting groove, and correspondingly, a second inclined surface symmetrically arranged with respect to each other is formed on the inner wall of the two limiting cavities on the side opposite to the knife plate, and the inclination of each second inclined surface cooperates with the inclination of a first inclined surface on the same side.

[0012] Preferably, a transversely arranged and rotatable locking bolt is inserted in the positioning block on each tooth seat, and the threaded end of each locking bolt extends backward into a limiting groove on a tooth seat where it is located and is inserted and screwed into a corresponding threaded countersunk hole, thereby causing the two pressing blocks on the tooth seat to move backward until the first inclined surfaces on the two pressing blocks are respectively tightly attached to the second inclined surfaces in the two limiting cavities, thereby fixing the tooth seat on the knife plate and automatically eliminating the installation gap to prevent the tooth seat from loosening up and down.

[0013] Preferably, a plurality of reinforcing ribs are formed on the left and right outer walls of each of the clamping blocks and the corresponding side outer walls of the knife plate, which are arranged in sequence from front to back.

[0014] Preferably, a countersunk hole is provided at the end of the positioning block, and a through hole is provided between the bottom surface of the countersunk hole and the rear outer wall of the gear seat and is laterally distributed and located between the pressing blocks, and the rear end opening of the through hole is connected to the interior of the limiting groove.

[0015] Preferably, the locking bolt is inserted into the through hole, and the head of the locking bolt is arranged in the countersunk hole and located behind the pin hole.

[0016] Preferably, the front-to-back depth of the limiting cavity and the front-to-back length of the pressing block cooperate with each other so that the front side of the blade and the bottom of the limiting groove are always not in contact with each other.

[0017] Preferably, a third inclined surface is formed at the upper and lower corners of the front end of each convex strip.

[0018] Compared with the prior art, the advantages of the present invention are: the present invention effectively increases the fixing strength between the tooth seat and the knife plate by means of two clamping blocks, and can automatically eliminate the installation gap between the tooth seat and the knife plate by means of the mutual cooperation of the first inclined surface and the second inclined surface to effectively prevent loosening; in addition, when disassembling the tooth seat, it is only necessary to tighten and remove the locking bolts, thereby simplifying the disassembly and assembly steps of the tooth seat, thereby improving the disassembly and assembly efficiency of the tooth seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the exploded structural diagram of the left front side of the utility model;

[0020] Figure 2 It is a side cross-sectional structural diagram of the gear seat of the utility model. DETAILED DESCRIPTION

[0021] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0023] like Figures 1-2 As shown, a high-strength excavator blade and tooth holder connection mechanism comprises a blade 1 and a plurality of tooth holders 2 detachably fixed on the blade 1 and arranged at equal intervals from left to right, two pressing blocks 21 are formed outwardly on the rear side of the tooth holder 2 and are symmetrically arranged on the upper and lower sides of the blade 1, and a positioning block 26 is formed outwardly on the front side of the tooth holder 2. A pin hole 27 is opened between the outer walls on the left and right sides of the positioning block 26, and the positioning block 26 and the pin hole 27 are both used to connect the tooth tip;

[0024] A limiting groove 22 is formed between the two pressing blocks 21, the width of the limiting groove 22 matches the thickness of the blade 1, and the upper and lower inner walls of the limiting groove 22 are parallel to each other and slide and fit on the upper and lower outer walls of the blade 1 respectively;

[0025] The blade plate 1 is formed with a plurality of clamping block assemblies which are arranged at equal intervals from left to right. Correspondingly, the front outer wall of the blade plate 1 is also provided with the same number of threaded countersunk holes 14 which are arranged at equal intervals from left to right. The number of the clamping block assemblies is equal to the number of the tooth holders 2, and each tooth holder 2 can be detachably fixed to a corresponding clamping block assembly.

[0026] The clamping block assembly comprises two clamping blocks 11 respectively arranged on the outer walls of the upper and lower sides of the blade 1 and symmetrically distributed, and each threaded countersunk hole 14 is located between the two clamping blocks 11 in a corresponding clamping block assembly; a symmetrically distributed limiting cavity 12 is provided on the front outer walls of the two clamping blocks 11, and the inner wall of one side of each limiting cavity 12 close to the blade 1 is flush with the corresponding outer wall of the blade 1 where it is located;

[0027] The two pressing blocks 21 on the gear holder 2 are respectively inserted into the limiting cavities 12 on the two clamping blocks 11, and the left and right outer walls of each pressing block 21 are respectively slidably fitted on the left and right inner walls of a corresponding limiting cavity 12;

[0028] On the left and right inner walls of each limiting cavity 12, a plurality of convex strips 15 are formed toward the inside of the limiting cavity 12, which are arranged laterally and distributed in parallel from top to bottom. Correspondingly, on the left and right outer walls of each pressing block 21, the same number of grooves 28 are formed and distributed in parallel from top to bottom. Each convex strip 15 is movably inserted into a corresponding groove 28.

[0029] A first inclined surface 23 symmetrically arranged is formed on the outer wall of the two pressure blocks 21 on the side opposite to the limiting groove 22. Correspondingly, a second inclined surface 13 symmetrically arranged is formed on the inner wall of the two limiting cavities 12 on the side opposite to the knife plate 1. The inclination of each second inclined surface 13 cooperates with the inclination of a first inclined surface 23 on the same side.

[0030] A transversely arranged and rotatable locking bolt 3 is inserted into the positioning block 26 on each tooth seat 2, and the threaded end of each locking bolt 3 extends backward into the limiting groove 22 on the tooth seat 2 where it is located and is inserted into a corresponding threaded countersunk hole 14, so that the two pressing blocks 21 on the tooth seat 2 move backward until the first inclined surfaces 23 on the two pressing blocks 21 are respectively tightly attached to the second inclined surfaces 13 in the two limiting cavities 12, thereby fixing the tooth seat 2 on the knife plate 1 and automatically eliminating the installation gap to prevent the tooth seat 2 from loosening up and down.

[0031] A plurality of reinforcing ribs 16 are formed on the left and right outer walls of each clamping block 11 and the corresponding outer wall of the blade 1 , which are arranged in sequence from front to back.

[0032] A countersunk hole 24 is formed at the end of the positioning block 26 , and a through hole 25 is formed between the bottom surface of the countersunk hole 24 and the rear outer wall of the gear seat 2 and is laterally distributed and located between the pressing blocks 21 . The rear end opening of the through hole 25 is connected to the inside of the limiting groove 22 .

[0033] The locking bolt 3 is inserted into the through hole 25 , and the head of the locking bolt 3 is disposed in the countersunk hole 24 and behind the pin hole 27 to avoid hindering the insertion of the plug pin that cooperates with the pin hole 27 into the pin hole 27 .

[0034] The front-to-back depth of the limiting cavity 12 and the front-to-back length of the pressing block 21 cooperate with each other so that the front side of the blade 1 and the bottom of the limiting groove 22 are always not in contact with each other.

[0035] A third inclined surface 17 is formed at the upper and lower corners of the front end of each convex strip 15 to facilitate the front end of the convex strip 15 to be inserted into the groove 28 .

[0036] Installation method of gear holder 2:

[0037] Place the tooth seat 2 in front of the blade 1 and align the limiting groove 22 on the tooth seat 2 with the blade 1 and move it backward, so that the front edge of the blade 1 is inserted into the limiting groove 22, and at the same time, the two pressing blocks 21 on the tooth seat 2 are respectively inserted into the limiting cavities 12 on the two clamping blocks 11, and the left and right outer walls of each pressing block 21 are respectively slidably fitted on the left and right inner walls of a corresponding limiting cavity 12. In this process, each convex strip 15 needs to be movably inserted into a corresponding groove 28; then, the threaded end of the locking bolt 3 is set backward and passed through the through hole 25, and then screwed in. into the threaded countersunk hole 14, thereby pushing the two pressing blocks 21 on the gear seat 2 to move backward according to the principle of spiral connection, and the left and right outer walls of each pressing block 21 slide along the left and right inner walls of a corresponding limiting cavity 12 respectively, and each convex strip 15 also slides along a corresponding groove 28 until the first inclined surfaces 23 on the two pressing blocks 21 are respectively tightly attached to the second inclined surfaces 13 in the two limiting cavities 12, thereby fixing the gear seat 2 on the knife plate 1 and automatically eliminating the installation gap to prevent the gear seat 2 from loosening up and down, and also simplifying the operation to improve the disassembly and assembly efficiency of the gear seat 2.

[0038] When the bucket tooth is working, the direction of the external force on the tooth seat 2 is mostly upward or downward perpendicular to the blade 1. Since the two pressing blocks 21 on the tooth seat 2 are respectively located in the two limiting cavities 12, and the second inclined surfaces 13 in the two limiting cavities 12 are respectively attached to the first inclined surfaces 23 on the two pressing blocks 21, the two clamping blocks 11 can restrain each pressing block 21, thereby offsetting the external force upward or downward perpendicular to the blade 1 on the tooth seat 2, thereby improving the fixing strength of the tooth seat 2; The convex strips 15 are also inserted into a corresponding groove 28, so the external force upward or downward perpendicular to the blade 1 applied to the tooth seat 2 will be evenly transmitted to the clamping block 11 with the help of the connection relationship between each groove 28 and each convex strip 15; and because a number of reinforcing ribs 16 arranged sequentially from front to back are formed on the left and right side outer walls of each clamping block 11 and the corresponding side outer walls of the blade 1, the connection strength between the clamping block 11 and the blade 1 is strengthened, and finally the fixing strength between the tooth seat 2 and the blade 1 is strengthened.

[0039] The utility model effectively increases the fixing strength between the tooth seat 2 and the blade 1 by means of two clamping blocks 11, and can automatically eliminate the installation gap between the tooth seat 2 and the blade 1 by means of the mutual cooperation of the first inclined surface 23 and the second inclined surface 13 to effectively avoid loosening; in addition, when disassembling the tooth seat 2, it is only necessary to tighten and remove the locking bolt 3, thereby simplifying the disassembly and assembly steps of the tooth seat 2, thereby improving the disassembly and assembly efficiency of the tooth seat 2.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A high-strength excavator blade and tooth seat connection mechanism, comprising a blade and a plurality of tooth seats detachably fixed on the blade and arranged in sequence from left to right with equal spacing, the rear side of the tooth seat is formed with two pressure blocks symmetrically arranged on the upper and lower sides of the blade, and the front side of the tooth seat is formed with a positioning block, and a pin hole is opened between the left and right outer walls of the positioning block, characterized in that: A limiting groove is formed between the two pressing blocks, the width of the limiting groove matches the thickness of the blade, and the upper and lower inner walls of the limiting groove are parallel to each other and slide and fit on the upper and lower outer walls of the blade respectively; The knife plate is formed with a plurality of clamping block assemblies which are arranged at equal intervals from left to right. Correspondingly, the front outer wall of the knife plate is also provided with the same number of threaded countersunk holes which are arranged at equal intervals from left to right. The number of the clamping block assemblies is equal to the number of the tooth seats, and each of the tooth seats can be detachably fixed to a corresponding clamping block assembly. The clamping block assembly comprises two clamping blocks which are respectively arranged on the upper and lower outer walls of the blade and are symmetrically distributed, and each of the threaded countersunk holes is located between the two clamping blocks in a corresponding clamping block assembly; a symmetrically distributed limiting cavity is provided on the front outer walls of the two clamping blocks, and the inner wall of one side of each limiting cavity close to the blade is flush with the corresponding outer wall of the blade where it is located; The two pressing blocks on the gear seat are respectively inserted into the limiting cavities on the two clamping blocks, and the left and right outer walls of each pressing block are respectively slidably fitted on the left and right inner walls of a corresponding limiting cavity; On the left and right inner walls of each of the limiting cavities, a plurality of convex strips are formed toward the inside of the limiting cavities, which are arranged laterally and distributed in parallel from top to bottom. Correspondingly, on the left and right outer walls of each of the pressing blocks, the same number of grooves are formed, which are distributed in parallel from top to bottom. Each of the convex strips is movably inserted into a corresponding groove.

2. A high-strength excavator blade and gear seat connection mechanism according to claim 1, characterized in that: A first inclined surface symmetrically arranged with respect to each other is formed on the outer wall of the two pressure blocks on the side opposite to the limiting groove. Correspondingly, a second inclined surface symmetrically arranged with respect to each other is formed on the inner wall of the two limiting cavities on the side opposite to the knife plate. The inclination of each second inclined surface cooperates with the inclination of a first inclined surface on the same side.

3. A high-strength excavator blade and gear seat connection mechanism according to claim 2, characterized in that: A transversely arranged and rotatable locking bolt is also inserted in the positioning block on each tooth seat, and the threaded end of each locking bolt extends backward into a limiting groove on a tooth seat where it is located and is inserted and screwed into a corresponding threaded countersunk hole, thereby causing the two pressing blocks on the tooth seat to move backward until the first inclined surfaces on the two pressing blocks are respectively tightly attached to the second inclined surfaces in the two limiting cavities, thereby fixing the tooth seat on the knife plate and automatically eliminating the installation gap to prevent the tooth seat from loosening up and down.

4. A high-strength excavator blade and gear seat connection mechanism according to claim 1, characterized in that: A plurality of reinforcing ribs are formed on the left and right outer walls of each of the clamping blocks and the corresponding side outer walls of the knife plate and are arranged in sequence from front to back.

5. A high-strength excavator blade and gear seat connection mechanism according to claim 3, characterized in that: A countersunk hole is provided at the end of the positioning block, and a through hole is provided between the bottom surface of the countersunk hole and the rear outer wall of the gear seat and is laterally distributed and located between the pressing blocks, and the rear end opening of the through hole is connected to the inside of the limiting groove.

6. A high-strength excavator blade and gear seat connection mechanism according to claim 5, characterized in that: The locking bolt is inserted into the through hole, and the head of the locking bolt is arranged in the countersunk hole and is located behind the pin hole.

7. A high-strength excavator blade and gear seat connection mechanism according to claim 1, characterized in that: The front-to-back depth of the limiting cavity and the front-to-back length of the pressing block cooperate with each other so that the front side of the knife plate and the bottom of the limiting groove are always not in contact with each other.

8. The high-strength excavator blade and gear seat connection mechanism according to claim 1, characterized in that: A third inclined surface is formed at the upper and lower corners of the front end of each convex strip.

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