A bucket tooth system connection mechanism

Abstract

This utility model discloses a bucket tooth system connection mechanism, including a front tooth, a middle tooth, a tooth base, a first connecting component, and a second connecting component. The front tooth has an open wedge-shaped structure with a first inner cavity for accommodating the middle tooth and a first through hole on its top surface. The middle tooth includes a front insertion part and a rear second inner cavity. The insertion part is inserted into the first inner cavity of the front tooth and has a first blind hole at a position corresponding to the first through hole. The first connecting component passes through the through hole on the front tooth and detachably connects the front tooth and the middle tooth through the first blind hole on the middle tooth. Second through holes are symmetrically provided on both sides of the middle tooth. The tooth base head at the front end of the tooth base is inserted into the second inner cavity of the middle tooth and has second blind holes at positions corresponding to the second through holes. The second connecting component passes through the second through hole on the middle tooth and detachably connects the middle tooth and the tooth base through the second blind hole on the tooth base. This bucket tooth system connection mechanism is easy to assemble and disassemble and has strong stability.

Description

Technical Field

[0001] This utility model relates to the field of excavating machinery technology, and in particular to a bucket tooth system connection mechanism. Background Technology

[0002] With the booming development of infrastructure construction, mining, and other industries, excavators are being used more frequently and under increasingly complex working conditions. As the part that directly contacts the excavated material, the bucket teeth endure enormous impact forces, frictional forces, and alternating loads during operation. The bucket tooth system's connection mechanism ensures a secure connection between the bucket teeth and the bucket body; its performance directly affects the excavator's work efficiency, operational safety, and operating costs. A good connection mechanism ensures that the bucket teeth do not loosen or fall off during high-intensity operations, maintaining the excavator's continuous and efficient operation. If the connection mechanism is unreliable, the bucket teeth are prone to failure, which can not only interrupt construction progress but also potentially damage equipment and cause safety accidents. Utility Model Content

[0003] Objective: In order to overcome the shortcomings of the existing technology, this utility model provides a connecting mechanism for a bucket tooth system that is easy to assemble and disassemble and has good stability.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] This utility model provides a bucket tooth system connection mechanism, including a front tooth, a middle tooth, a tooth seat, a first connection component, and a second connection component;

[0006] The front tooth is an open wedge-shaped structure with a first inner cavity for accommodating the middle tooth, and a first through hole is provided on the top surface;

[0007] The middle tooth includes a front insertion part and a rear second inner cavity. The insertion part is inserted into the first inner cavity of the front tooth and a first blind hole is provided at a position corresponding to the first through hole. The first connecting component passes through the through hole on the front tooth and detachably connects the front tooth and the middle tooth through the first blind hole on the middle tooth. The two sides of the middle tooth are symmetrically provided with second through holes.

[0008] The tooth holder includes a front tooth holder head and a rear mounting part. The mounting part is used to install the bucket teeth onto the bucket. The tooth holder head is inserted into the second inner cavity of the middle tooth and has a second blind hole at a position corresponding to the second through hole. The second connecting component passes through the second through hole on the middle tooth and detachably connects the middle tooth and the tooth holder through the second blind hole on the tooth holder.

[0009] The front and middle teeth, as well as the middle tooth and tooth seat, of the bucket tooth system connection mechanism of this utility model are all detachably connected. When there is local wear, the parts can be replaced individually, reducing maintenance costs and time. The first inner cavity of the front tooth and the insertion part of the middle tooth, and the second inner cavity of the middle tooth and the tooth seat head of the tooth seat, all form a nested structure, which facilitates quick and easy alignment of the kit during installation and improves assembly efficiency.

[0010] In some embodiments, the first connecting component includes a first plug, a first plug plate, and a first retaining plate, and a first cavity is formed on the side of the first blind hole;

[0011] The first plug plate and the first clamping plate are two-stage stepped structures. The first clamping plate is installed in the first cavity through the first blind hole, and the first plug plate is installed on the first clamping plate.

[0012] The first plunger is installed on the first plunger plate after passing through the first through hole.

[0013] In some embodiments, the first through hole is elliptical, and after the first plug plate is installed on the first card plate, the total length of the two is greater than the length of the major axis of the first through hole.

[0014] The first stopper plate, the first clamping plate, and the first stopper pin are connected to form a whole. The first clamping plate is clamped in the first cavity of the middle tooth, and the first stopper pin is in the first through hole of the front tooth. During the operation of the bucket tooth system, the effective connection between the front tooth and the middle tooth can be guaranteed.

[0015] The first through hole is elliptical, and the first plug is installed on the first plug plate through the first through hole. This makes the first plug and the first through hole fit together. During the operation of the bucket teeth, the impact stress can be dispersed by a small displacement, which improves the stability of the structure.

[0016] In some embodiments, a countersunk hole is provided on the bottom surface of the first stopper plate, and the first stopper is installed on the first stopper plate after being sunk into the countersunk hole.

[0017] In some embodiments, the second step of the first card plate is provided with a first arc surface, and when the first plug plate is installed on the first card plate, the kick surface of the first step of the first plug plate is in contact with the first arc surface.

[0018] The design of the first arc surface facilitates quick positioning when the first stopper plate is installed on the first clamping plate, reducing assembly time.

[0019] In some embodiments, two first through holes are provided, which are opened opposite to each other on the upper and lower surfaces of the front teeth; on the upper and lower surfaces of the insertion part at the front end of the middle teeth, two first blind holes are opened at positions corresponding to the two first through holes, and a first cavity is opened on the side of each of the two first blind holes.

[0020] The arrangement of two sets of corresponding first through holes and first blind holes allows the first connecting assembly to detachably connect the front tooth and the middle tooth through either the first blind hole or the first through hole.

[0021] In some embodiments, the second connecting component includes a second plug, a second plug plate, and a second retaining plate, and a second cavity is formed on the side of the second through hole;

[0022] The second plunger passes through the second through hole and is placed inside the second blind hole;

[0023] The second card plate and the second plug plate are two-stage stepped structures. The second card plate is installed in the second cavity through the second through hole, and the second plug plate is placed in the second through hole and installed on the second card plate.

[0024] In some embodiments, the second through hole is elliptical, and after the second plug plate is installed on the second card plate, the total length of the two is greater than the length of the major axis of the second through hole.

[0025] In some embodiments, the length of the second plug is greater than the depth of the second blind hole.

[0026] The second plug plate and the second clamping plate are connected to form a whole. The second clamping plate is clamped in the second cavity of the middle tooth to prevent the second plug from falling out. The second plug is in the second blind hole of the tooth seat, and the length of the second plug is greater than the depth of the second blind hole, which ensures the effective connection between the middle tooth and the tooth seat.

[0027] The second through hole is elliptical. During the operation of the bucket tooth system, the second plug and the second through hole form a movable fit. During the operation of the bucket teeth, the impact stress can be dispersed through slight displacement, which improves the stability of the structure.

[0028] In some embodiments, the second step of the second card plate is provided with a second arc surface, and when the second plug plate is installed on the second card plate, the kick surface of the first step of the second plug plate is in contact with the second arc surface.

[0029] The design of the second arc surface facilitates quick positioning when the second stopper plate is installed on the second clamping plate, reducing assembly time.

[0030] In some embodiments, two first blind holes are provided, which are opened opposite to each other on the upper and lower surfaces of the front end of the middle tooth. The sides of the two first blind holes are provided with first cavities. The first connecting component can detachably connect the front tooth and the middle tooth through either of the first blind holes. The second through holes and the second connecting component designed symmetrically on the middle tooth enable the middle tooth to be used in a 180° orientation change, which balances the wear on the upper and lower sides and extends the service life of the component.

[0031] Therefore, similar to the middle tooth, the first through holes on the upper and lower surfaces of the front tooth, together with the first connecting component, enable the front tooth to be used in a 180° orientation change, which balances the wear on the upper and lower sides and extends the service life of the component.

[0032] Beneficial effects:

[0033] 1. In the connecting mechanism of this bucket tooth system, the front tooth, middle tooth and tooth seat are assembled in sections through detachable connecting components. The modular design makes disassembly and assembly more convenient, maintenance faster, and reduces maintenance costs and time.

[0034] 2. The first and second connecting components form a double fixation, which disperses the stress load and improves the structural reliability during excavation operations;

[0035] 3. The nested connection structure can effectively absorb and disperse the impact force during excavation, reduce the risk of loosening of the connectors, and adapt to high-intensity working environments. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is an exploded view of the structure of the bucket tooth system connection mechanism in an embodiment of this utility model;

[0038] Figure 2 This is a schematic diagram of the overall structure of the bucket tooth system connection mechanism in an embodiment of this utility model;

[0039] Figure 3 This is a schematic diagram of the front teeth in an embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the structure of the middle tooth in an embodiment of this utility model;

[0041] Figure 5 This is a cross-sectional view (AA) of the tooth in an embodiment of this utility model;

[0042] Figure 6 This is a BB cross-sectional view of the middle tooth in an embodiment of this utility model;

[0043] Figure 7 This is a schematic diagram of the tooth holder structure in an embodiment of this utility model;

[0044] Figure 8 This is a schematic diagram of the connection mechanism between the middle tooth and the front tooth in an embodiment of this utility model;

[0045] Figure 9 This is an exploded view of the connection mechanism between the middle tooth and the front tooth in an embodiment of this utility model;

[0046] Figure 10 This is a schematic diagram of the connection mechanism between the tooth and the tooth seat in an embodiment of this utility model;

[0047] Figure 11 This is an exploded view of the tooth and tooth seat connection mechanism in an embodiment of this utility model;

[0048] Figure 12 This is a CC cross-sectional schematic diagram of the tooth and tooth seat connection mechanism in an embodiment of this utility model;

[0049] Figure 13 This is a schematic DD cross-sectional view of the tooth and tooth seat connection mechanism in an embodiment of this utility model;

[0050] Figure 14 This is a structural diagram of the symmetrical through holes on the front teeth in an embodiment of this utility model;

[0051] Figure 15 This is a structural diagram of the symmetrical blind hole structure of the middle tooth in this embodiment of the present invention.

[0052] In the diagram: 1. Front tooth, 11. First through hole, 12. First inner cavity; 2. Middle tooth, 21. First blind hole, 22. Second through hole, 23. Second inner cavity, 24. First concave cavity, 25. Second concave cavity, 26. Insertion part; 3. Tooth seat, 31. Second blind hole; 41. First plug, 411. First threaded hole, 42. First plug plate, 421. First step of the first plug plate, 422. Countersunk hole, 423. Second threaded hole, 424. Third threaded hole, 43. First clamping plate, 431. Second step of the first clamping plate, 432. First arc surface, 433. Fourth threaded hole, 434. First step of the first clamping plate; 51. Second plug, 52. Second plug plate, 521. First step of the second plug plate, 522. Fifth threaded hole, 53. Second clamping plate, 531. Second step of the second clamping plate, 532. Second arc surface, 533. Sixth threaded hole, 534. First step of the second clamping plate. Detailed Implementation

[0053] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use.

[0054] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may include different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0055] Example 1:

[0056] This embodiment provides a connecting mechanism for a bucket tooth system, such as... Figure 1 , Figure 2 As shown, it includes a front tooth 1, a middle tooth 2, a tooth base 3, a first connecting assembly, and a second connecting assembly;

[0057] like Figure 3 As shown, the front tooth 1 is an open wedge-shaped structure with a first inner cavity 12 for accommodating the middle tooth 2, and a first through hole 11 is provided on the top surface;

[0058] like Figure 4 As shown, the middle tooth 2 includes a front insertion part 26 and a rear second inner cavity 23. The insertion part 26 is inserted into the first inner cavity 12 of the front tooth 1, and a first blind hole 21 is provided at a position corresponding to the first through hole 11. The first connecting component passes through the through hole on the front tooth 1 and detachably connects the front tooth 1 and the middle tooth 2 through the first blind hole 21 on the middle tooth 2. Second through holes 22 are symmetrically provided on both sides of the middle tooth 2.

[0059] like Figure 7 As shown, the tooth holder 3 includes a tooth holder head at the front end and a mounting part at the rear end. The mounting part is used to install the bucket teeth onto the bucket. The tooth holder head is inserted into the second inner cavity 23 of the middle tooth 2, and a second blind hole 31 is provided at the position corresponding to the second through hole 22. The second connecting component passes through the second through hole 22 on the middle tooth 2 and detachably connects the middle tooth 2 and the tooth holder 3 through the second blind hole 31 on the tooth holder 3.

[0060] like Figure 1 , Figure 8 , Figure 9 and Figure 13 As shown, the first connecting assembly includes a first plug 41, a first plug plate 42 and a first retaining plate 43, and a first recess 24 is provided on the side of the first blind hole 21;

[0061] The first plug plate 42 and the first clamping plate 43 are two-stage stepped structures. The first clamping plate 43 is installed in the first cavity 24 through the first blind hole 21, and the first plug plate 42 is installed on the first clamping plate 43.

[0062] The first plunger 41 passes through the first through hole 11 and is then mounted on the first plunger plate 42.

[0063] Specifically, such as Figure 8 and Figure 9 As shown, the top surface of the first plug 41 is provided with a first threaded hole 411, and the bottom surface of the first plug plate 42 is provided with a second threaded hole 423. After screwing the bolt into the first threaded hole 411 and the second threaded hole 423, the first plug 41 can be installed on the first plug plate 42.

[0064] Furthermore, a third threaded hole 424 is provided on the first step 421 of the first plug plate, and a fourth threaded hole 433 is provided on the first step 434 of the first clamping plate. After screwing the bolt into the third threaded hole 424 and the fourth threaded hole 433, the first plug plate 42 can be installed on the first clamping plate 43.

[0065] In this embodiment, the first through hole 11 is elliptical, and after the first plug plate 42 is installed on the first card plate 43, the total length of the two is greater than the length of the major axis of the first through hole 11.

[0066] In this embodiment, as Figure 9 As shown, the bottom surface of the first plug plate 42 has a countersunk hole 422, and the first plug 41 is installed on the first plug plate 42 after being sunk into the countersunk hole 422. The second threaded hole 423 on the first plug plate 42 is located inside the countersunk hole 422.

[0067] In this embodiment, the second step 431 of the first card plate is provided with a first arc surface 432. When the first plug plate 42 is installed on the first card plate 43, the kick surface of the first step 421 of the first plug plate is in contact with the first arc surface 432.

[0068] like Figure 10 , Figure 11 and Figure 12 As shown, the second connecting assembly includes a second plug 51, a second plug plate 52, and a second retaining plate 53, and a second cavity 25 is provided on the side of the second through hole 22;

[0069] The second plug 51 passes through the second through hole 22 and is placed inside the second blind hole 31;

[0070] The second card plate 53 and the second plug plate 52 are two-stage stepped structures. The second card plate 53 is installed in the second cavity 25 through the second through hole 22, and the second plug plate 52 is placed in the second through hole 22 and installed on the second card plate 53.

[0071] Specifically, such as Figure 10 and Figure 11 As shown, a fifth threaded hole 522 is provided on the first step 521 of the second plug plate, and a sixth threaded hole 533 is provided on the first step 534 of the second clamping plate. After screwing the bolt into the fifth threaded hole 522 and the sixth threaded hole 533, the second plug plate 52 can be installed on the second clamping plate 53.

[0072] In this embodiment, the second through hole 22 is elliptical, and after the second plug plate 52 is installed on the second card plate 53, the total length of the two is greater than the length of the major axis of the second through hole 22.

[0073] like Figure 12 As shown, the length of the second plug 51 is greater than the depth of the second blind hole 31.

[0074] In this embodiment, the second step 531 of the second card plate 53 is provided with a second arc surface 532. When the second plug plate 52 is installed on the second card plate 53, the kick surface of the first step 521 of the second plug plate 52 fits against the second arc surface 532.

[0075] Example 2:

[0076] Based on Embodiment 1, this embodiment optimizes the structure of the front tooth 1 and provides a method to extend the service life of the front tooth 1 and the middle tooth 2.

[0077] Specifically, such as Figure 14 and Figure 15 As shown, the front tooth 1 has symmetrical first through holes 11 on its upper and lower surfaces, and the middle tooth has symmetrical first blind holes 21 on its upper and lower surfaces. The positions of the first blind holes 21 correspond to the first through holes 11. The sides of the two first blind holes 21 are provided with first recesses 24.

[0078] When the wear on both sides of the front tooth 1 is uneven, first unscrew the bolts in the first threaded hole 411 and the second threaded hole 423, remove the first plug 41, then unscrew the bolts in the third threaded hole 424 and the fourth threaded hole 433, remove the first plug plate 42, and then remove the first clamping plate 43 from the first cavity 24; turn the upper and lower sides of the front tooth 1 around and reinstall the first connecting assembly.

[0079] When the wear on both sides of the middle tooth 2 is uneven, unscrew the bolts in the fifth threaded hole 522 and the sixth threaded hole 533, remove the second plug plate 52 and the second clamping plate 53, remove the second plug 51, turn the upper and lower sides of the middle tooth 2 around, and reinstall the second plug 51, the second clamping plate 53 and the second plug plate 52.

[0080] Example 3:

[0081] This embodiment, based on Embodiment 1, provides an installation method for the connecting mechanism of a bucket tooth system, comprising the following steps:

[0082] S1. Mount the middle gear 2 onto the gear seat;

[0083] S2. First, insert the second plug 51 into the second blind hole 31 through the second through hole 22 on the middle tooth 2, and then install the second clamping plate 53 into the second cavity 25 through the second through hole 22. The second clamping plate 53 is clamped in the second cavity 25.

[0084] S3. Insert the second plug plate 52 into the second through hole 22 and fix it through the fifth threaded hole 522 on the upper plate and the sixth threaded hole 533 on the second card plate.

[0085] S4. First, insert the first card plate 43 into the first cavity 24 of the middle tooth through the first blind hole 21, and then insert the first plug plate 42 into the first blind hole 21. The first step 421 of the first plug plate contacts the second step 431 of the first card plate and is fixed through the third threaded hole 424 on the first plug plate 42 and the fourth threaded hole 433 on the first card plate 43.

[0086] S5. Mount the front gear 1 onto the middle gear 2;

[0087] S6. The first plug 41 is installed on the first plug plate 42 through the first through hole 11 and fixed through the first threaded hole 411 on the first plug 41 and the second threaded hole 423 on the first plug plate 42.

[0088] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to explain the relative positional relationship and movement between the components in a specific posture. If the specific posture changes, the directional indication will also change accordingly. These terms are used only for the convenience of describing this utility model and for simplifying the description, and are not intended to 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.

[0089] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0090] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0091] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A system of connecting mechanisms for a tooth system, characterized in that, It includes front teeth, middle teeth, tooth base, first connecting assembly and second connecting assembly; The front tooth is an open wedge-shaped structure with a first inner cavity for accommodating the middle tooth, and a first through hole is provided on the top surface; The middle tooth includes a front insertion part and a rear second inner cavity. The insertion part is inserted into the first inner cavity of the front tooth and a first blind hole is provided at a position corresponding to the first through hole. The first connecting component passes through the through hole on the front tooth and detachably connects the front tooth and the middle tooth through the first blind hole on the middle tooth. The two sides of the middle tooth are symmetrically provided with second through holes. The tooth holder includes a front tooth holder head and a rear mounting part. The mounting part is used to install the bucket teeth onto the bucket. The tooth holder head is inserted into the second inner cavity of the middle tooth and has a second blind hole at a position corresponding to the second through hole. The second connecting component passes through the second through hole on the middle tooth and detachably connects the middle tooth and the tooth holder through the second blind hole on the tooth holder.

2. The bucket tooth system connection mechanism of claim 1, wherein, The first connecting assembly includes a first plug, a first plug plate, and a first retaining plate, and a first cavity is formed on the side of the first blind hole; The first plug plate and the first clamping plate are two-stage stepped structures. The first clamping plate is installed in the first cavity through the first blind hole, and the first plug plate is installed on the first clamping plate. The first plunger is installed on the first plunger plate after passing through the first through hole.

3. The bucket tooth system connection mechanism of claim 2, wherein, The first through hole is elliptical. After the first plug plate is installed on the first card plate, the total length of the two is greater than the length of the major axis of the first through hole.

4. The bucket tooth system connecting mechanism according to claim 2, characterized in that, The bottom surface of the first stopper plate has a countersunk hole, and the first stopper is installed on the first stopper plate after being sunk into the countersunk hole.

5. The bucket tooth system connecting mechanism according to claim 2, characterized in that, The first card plate has a first arc surface on the second step. When the first plug plate is installed on the first card plate, the first step of the first plug plate fits against the first arc surface.

6. The bucket tooth system connecting mechanism according to claim 2, characterized in that, The first through hole is provided in two parts, which are opened opposite to each other on the upper and lower surfaces of the front tooth; On the upper and lower surfaces of the insertion part at the front end of the middle tooth, two first blind holes are respectively opened at positions corresponding to the two first through holes, and a first cavity is opened on the side of each of the two first blind holes.

7. The bucket tooth system connecting mechanism according to claim 1, characterized in that, The second connecting assembly includes a second plug, a second plug plate, and a second retaining plate, and a second cavity is formed on the side of the second through hole; The second plunger passes through the second through hole and is placed inside the second blind hole; The second card plate and the second plug plate are two-stage stepped structures. The second card plate is installed in the second cavity through the second through hole, and the second plug plate is placed in the second through hole and installed on the second card plate.

8. The bucket tooth system connecting mechanism according to claim 7, characterized in that, The second through hole is elliptical. After the second plug plate is installed on the second card plate, the total length of the two is greater than the length of the major axis of the second through hole.

9. The bucket tooth system connecting mechanism according to claim 7, characterized in that, The length of the second plug is greater than the depth of the second blind hole.

10. The bucket tooth system connecting mechanism according to claim 7, characterized in that, The second plate has a second arc surface on the second step. When the second stopper is installed on the second plate, the first step of the second stopper fits against the second arc surface.

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