Bucket tooth of electric shovel

Abstract

The present invention relates to the technical field of electric shovel bucket teeth, and in particular to an electric shovel bucket tooth, comprising a tooth seat component fixed on the electric shovel body, and a tooth tip component installed on the tooth seat component through a pin shaft; the tooth seat component comprises a seat body installed on the electric shovel body, a groove is provided on the front side of the seat body, a friction rotating part that can be raised and lowered is arranged inside the groove, the friction rotating part drives the reverse thrust block to rotate upward through a transmission part, and the tooth tip component comprises a tooth housing body sleeved on the front end of the seat body, a notch is provided on the inner upper surface of the tooth housing body, and the reverse thrust block rotates upward and is inserted into the notch. In order to solve the problem of wear and looseness of the electric shovel bucket teeth, this scheme provides a groove and a friction rotating part in the tooth seat. When the pin shaft is connected, the pusher moves upward to make the friction part close to the tooth housing body. During operation, the tooth housing shakes to rotate the friction part, driving the wedge block to lock with the reverse thrust block, enhancing stability, self-compensating wear clearance, and improving efficiency and safety.

Description

Technical Field

[0001] The invention relates to the technical field of electric shovel bucket teeth, and in particular to an electric shovel bucket tooth. Background Art

[0002] In the current electric shovel operation field, the performance of the electric shovel bucket teeth, as a key operating component, directly affects the excavation efficiency and overall operating costs. In the traditional design, the electric shovel bucket teeth are usually composed of high-strength tooth tips and tooth seats. The tooth seats are fixed to the electric shovel body, and the tooth tips are installed on the tooth seats through precise matching, and the pin shaft plug-in locking mechanism is used to ensure its stability and reliability during operation. However, with long-term continuous operation and frequent excavation of high-strength materials, this classic structural design has gradually shown its limitations.

[0003] Specifically, due to the continuous impact and friction between the tooth tip and the tooth seat, wear is inevitable, which will not only cause the gap between the two to gradually increase, but also may cause the bucket teeth to loosen or even shake. This phenomenon will not only significantly reduce the accuracy and efficiency of excavation operations and increase energy consumption, but may also cause safety hazards, such as accidental falling of bucket teeth, posing a threat to equipment and operators. In addition, frequent shutdowns for maintenance and replacement of bucket teeth also significantly increase operating costs and affect construction progress. Summary of the invention

[0004] In view of the above-mentioned problems existing in the existing electric shovel bucket teeth, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide an electric shovel bucket tooth, the purpose of which is to solve the problem of gap increase and loosening caused by wear under long-term use.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution: comprising a tooth seat component fixed on the electric shovel body, and a tooth tip component installed on the tooth seat component through a pin shaft;

[0007] The tooth seat component comprises a seat body mounted on the electric shovel body, a groove is provided on the front side of the seat body, a friction rotating member that can be raised and lowered is arranged inside the groove, the friction rotating member drives the reverse thrust block to rotate upward through the transmission member, a first mounting hole for inserting the pin shaft is provided in the seat body, and a pushing member for pushing the friction rotating member to rise is installed between the groove and the first mounting hole;

[0008] The tooth tip component includes a tooth housing body sleeved on the front end of the seat body, a notch is provided on the inner top surface of the tooth housing body, the reverse thrust block is rotated upward and inserted into the notch, and a second mounting hole for inserting the pin shaft is provided in the tooth housing body.

[0009] As a preferred solution of the electric shovel bucket tooth of the present invention, the front end cross-section of the seat body is an inverted trapezoid, the cavity inside the tooth housing body is adapted thereto, and the groove is located on the upper inclined surface of the trapezoid.

[0010] As a preferred solution of the electric shovel bucket tooth of the present invention, the pushing member includes an inclined groove opened on the side wall of the groove toward the first mounting hole, and a socket connecting the inclined groove and the first mounting hole, a sliding block is slidably arranged in the inclined groove, a straight rod is arranged at the bottom of the sliding block, the straight rod is located in the socket, and the lower end of the straight rod is located in the first mounting hole.

[0011] As a preferred solution of the electric shovel bucket tooth of the present invention, the friction rotating member includes a rotating rod installed between the two sliding blocks, a friction wheel is rotatably arranged on the rotating rod, and a one-way rotating member is arranged on the side of the friction wheel.

[0012] As a preferred solution of the electric shovel bucket tooth of the present invention, the one-way rotating part includes a ratchet fixed to the side of the friction wheel, a ring is provided on the outer wall of the ratchet, and a rotatable ratchet is provided inside the ring, and the ratchet is against the ratchet.

[0013] As a preferred solution of the electric shovel bucket tooth of the present invention, the transmission member includes a gear ring installed on the outside of the one-way rotating member, a rack is arranged above the gear ring, and a wedge block is arranged at the front end of the rack.

[0014] As a preferred solution of the electric shovel bucket tooth of the present invention, the reverse thrust block is arranged in the groove on a side away from the friction rotating part through a rotating shaft, and the wedge block is inserted into the bottom of the reverse thrust block.

[0015] As a preferred solution of the electric shovel bucket tooth of the present invention, the outer wall of the rotating end of the reverse thrust block is arranged in an arc shape, the notch is arranged in a triangular shape, and the free end of the reverse thrust block is inserted into the notch.

[0016] As a preferred solution of the electric shovel bucket tooth of the present invention, the pin shaft passes through the first mounting hole and the second mounting hole, and is used to lock the tooth seat component and the tooth tip component, and both ends of the pin shaft are chamfered and truncated in a cone shape, and are used to insert the lower end of the straight rod.

[0017] As a preferred solution of the electric shovel bucket tooth of the present invention, a raised step is provided at the front end of the seat body, and the end face of the tooth housing abuts against the front surface of the step.

[0018] Beneficial effects of the present invention: The present application sets a groove inside the seat body of the tooth seat component, and places a friction-rotating component in the groove. Between the groove and the first mounting hole on the seat body, we set a pusher, which can respond to the connection action of the pin. When the pin is inserted into the first mounting hole and the second mounting hole to tightly connect the tooth housing body with the seat body, the pusher is squeezed by the pin and moves upward, thereby pushing the friction-rotating component to rise until it is in close contact with the inner side wall of the tooth housing body.

[0019] The key to this design is that when the gear housing shakes slightly during operation, it will drive the friction rotating part to rotate. This rotation will further drive the transmission parts connected to it, especially the wedge blocks on the transmission parts. This wedge block will be embedded in the bottom of the reverse thrust block pre-set at the other end of the gear housing, and as the wedge block moves deeper, the reverse thrust block will be pushed upward and finally embedded in the specially designed groove of the gear housing. This chain reaction can not only effectively prevent further shaking of the gear housing, but also realize a more secure secondary locking between the gear housing and the seat body through the gradual deepening of the reverse thrust block. This design significantly improves the stability and safety of the electric shovel and reduces the phenomenon of loose components. At the same time, through the dynamic adjustment mechanism, the gap that may occur due to wear is automatically compensated, extending the maintenance cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the installation state of the bucket teeth of the electric shovel of the present invention.

[0022] Figure 2 It is a schematic diagram of the overall structure of the electric shovel bucket teeth of the present invention.

[0023] Figure 3 The tooth seat structure of the electric shovel bucket tooth of the present invention is shown in FIG. Figure 1 .

[0024] Figure 4 The tooth seat structure of the electric shovel bucket tooth of the present invention is shown in FIG. Figure 2 .

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the tooth seat component of the electric shovel bucket tooth of the present invention.

[0026] Figure 6 for Figure 5A schematic diagram of the enlarged structure in the middle.

[0027] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B in the middle.

[0028] In the figure:

[0029] 100, tooth seat component; 101, seat body; 102, groove; 103, friction rotating member; 103a, rotating rod; 103b, friction wheel; 103c, one-way rotating member; 103c-1, ratchet; 103c-2, collar; 103c-3, ratchet; 104, transmission member; 104a, gear ring; 104b, rack; 104c, wedge block; 105, reverse push block; 105a, rotating shaft; 106, first mounting hole; 107, pushing member; 107a, inclined groove; 107b, plug hole; 107c, slider; 107d, straight rod; 108, step;

[0030] 200, tooth tip component; 201, tooth housing; 202, slot; 203, second mounting hole;

[0031] 300. Pin. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0036] Example 1

[0037] Reference Figure 1-Figure 4, which is the first embodiment of the present invention, provides an electric shovel bucket tooth, including a tooth seat component 100 fixed on the electric shovel body, and a tooth tip component 200 installed on the tooth seat component 100 through a pin shaft 300; the tooth seat component 100 includes a seat body 101 installed on the electric shovel body, a groove 102 is opened on the front side of the seat body 101, and a friction rotating member 103 that can be raised and lowered is arranged inside the groove 102. The friction rotating member 103 drives the reverse thrust block 105 to rotate upward through a transmission member 104. A first mounting hole 106 for inserting the pin shaft 300 is opened in the seat body 101, and a pushing member 107 for pushing the friction rotating member 103 to rise is installed between the groove 102 and the first mounting hole 106; the tooth tip component 200 includes a tooth housing body 201 which is sleeved on the front end of the seat body 101, and a notch 202 is opened on the inner top surface of the tooth housing body 201, and the reverse thrust block 105 is rotated upward and inserted into the notch 202, and a second mounting hole 203 for inserting the pin shaft 300 is opened in the tooth housing body 201.

[0038] In order to solve the problems of wear, looseness and shaking between the tooth tip component 200 and the tooth seat component 100 of the electric shovel bucket tooth due to long-term use, the present technical solution proposes a design: a groove 102 is provided inside the tooth seat component 100 (seat body 101), and a friction rotating part 103 is inserted into the groove 102, and a pushing member 107 that responds to the connecting action of the pin shaft 300 is arranged between the groove 102 and the first mounting hole 106 on the (seat body 101). When the tooth housing body 201 and the seat body 101 are tightly connected by inserting the pin shaft 300 into the first mounting hole 106 and the second mounting hole 203, the pushing member 107 is squeezed upward by the pin shaft 300, thereby prompting the friction rotating part 103 to rise until it is in close contact with the inner wall of the tooth housing body 201.

[0039] The key to this ingenious design is that when the gear housing 201 slightly shakes during operation, it will drive the friction rotating member 103 to rotate, and the rotation further drives the transmission member 104 connected thereto, especially the wedge block 104c on the transmission member 104, which is embedded in the bottom of the reverse push block 105 pre-set at the other end of the gear housing 201. As the wedge block 104c moves deeper, the reverse push block 105 is pushed upward and finally embedded in the specially designed notch 202 of the gear housing 201. This chain reaction not only effectively prevents the gear housing 201 from shaking further, but also realizes a more secure secondary locking between the gear housing 201 and the seat body 101 through the gradual deepening of the reverse push block 105.

[0040] The significant effects of this design include: greatly reducing the looseness of components during operation, enhancing the stability and safety of operation; automatically compensating for gaps that may occur due to wear through a dynamic adjustment mechanism, extending the maintenance cycle; at the same time, there is no need for frequent shutdowns for adjustments, which improves the operating efficiency and economic benefits of the electric shovel and provides a more reliable and lasting solution for electric shovel operations.

[0041] Example 2

[0042] Reference Figure 2-Figure 7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that the front cross section of the seat body 101 is an inverted trapezoid, the cavity inside the tooth housing 201 is adapted thereto, and the groove 102 is located on the upper slope of the trapezoid. A raised step 108 is provided at the front end of the seat body 101, and the end face of the tooth housing 201 abuts against the front surface of the step 108. The pin 300 passes through the first mounting hole 106 and the second mounting hole 203, and is used to lock the tooth seat component 100 and the tooth tip component 200.

[0043] In the standard installation process, the tooth housing 201 aligns its internal matching cavity structure with the special design form of the front end of the seat body 101 - a tilted trapezoidal cross-section, to achieve precise docking. The contour of the inner cavity of the tooth housing 201 is optimized for this trapezoidal design to ensure that the two fit tightly, and the groove 102 is cleverly set on the upper slope of this trapezoidal structure, so that the friction rotating part 103 inside it will fit the top surface of the cavity. A raised step 108 structure is also specially set at the front end of the seat body 101. When the tooth housing 201 is fully embedded in place, its end face is stably supported on the front end surface of the step 108, forming a stable basic docking state.

[0044] Then, the installation process enters the key step: the first mounting hole 106 on the tooth holder is precisely aligned with the second mounting hole 203 at the corresponding position of the tooth housing 201. By inserting and fixing the pin 300, this operation not only completes the spatial positioning of the tooth holder and the tooth housing 201, but more importantly, realizes a firm mechanical lock between the two components. The pin 300 is the core connector. Its simple and efficient design that runs through the two mounting holes ensures the stability and reliability of the entire bucket tooth system during operation. Even in the face of high-intensity excavation operations and continuous mechanical shocks, the components can be kept tight and not loose.

[0045] The remaining structures are the same as those of Example 1.

[0046] Example 3

[0047] Reference Figure 2-Figure 7, which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: the pusher 107 includes an inclined groove 107a opened on the side wall of the groove 102 and facing the first mounting hole 106, and a plug hole 107b connecting the inclined groove 107a and the first mounting hole 106, a slider 107c is slidably arranged in the inclined groove 107a, a straight rod 107d is arranged at the bottom of the slider 107c, the straight rod 107d is located in the plug hole 107b, and the lower end of the straight rod 107d is located in the first mounting hole 106. The two ends of the pin 300 are chamfered and truncated, and are used to insert the lower end of the straight rod 107d. The friction rotating member 103 includes a rotating rod 103a installed between the two sliders 107c, a friction wheel 103b is rotatably arranged on the rotating rod 103a, and a one-way rotating member 103c is arranged on the side of the friction wheel 103b. The one-way rotating member 103c includes a ratchet 103c-1 fixed to the side of the friction wheel 103b, a collar 103c-2 is sleeved on the outer wall of the ratchet 103c-1, a rotatable ratchet 103c-3 is arranged inside the collar 103c-2, and the ratchet 103c-3 abuts against the ratchet 103c-1. The transmission member 104 includes a toothed ring 104a installed on the outer side of the one-way rotating member 103c, a rack 104b is arranged above the toothed ring 104a, and a wedge block 104c is arranged at the front end of the rack 104b. The reverse thrust block 105 is arranged in the groove 102 on the side away from the friction rotating member 103 through a rotating shaft 105a, and the wedge block 104c is inserted into the bottom of the reverse thrust block 105. The outer wall of the rotating end of the reverse thrust block 105 is configured to be in an arc shape, the notch 202 is configured to be in a triangular shape, and the free end of the reverse thrust block 105 is inserted into the notch 202 .

[0048] Design of pusher 107: The core of pusher 107 is a clever combination of inclined groove 107a-slider 107c-straight rod 107d. The inclined groove 107a is set on the side wall of groove 102, pointing to the first mounting hole 106, ensuring the direction of force transmission. Slider 107c slides in this inclined groove 107a, and the straight rod 107d at its bottom passes through the insertion hole 107b. The lower end of the straight rod 107d is located in the first mounting hole 106, and the truncated cone chamfer design at both ends of the pin 300 ensures accurate insertion with the lower end of the straight rod 107d, so as to generate the necessary extrusion force during the insertion process. This design uses the upward thrust generated when the pin 300 is inserted, and realizes the vertical movement of the component through the transmission of the straight rod 107d and the slider 107c. In particular, the friction wheel 103b on the rotating rod 103a is in close contact with the inner top surface of the gear housing 201, and is fitted thereto through the linkage upward movement of the slider 107c and the straight rod 107d, laying a foundation for subsequent dynamic adjustment.

[0049] The transmission mechanism of the one-way rotating member 103c: the ratchet 103c-1 on the side of the friction wheel 103b cooperates with the ratchet 103c-3 in the collar 103c-2, which constitutes the key to the one-way transmission. This design ensures effective rotation only in a specific direction, avoids energy loss caused by reverse movement, and ensures the efficiency and reliability of the transmission. The combination of the gear ring 104a and the rack 104b, especially the wedge block 104c at the front end of the rack 104b, realizes the precise control and push of the reverse thrust block 105 through this transmission link.

[0050] The cooperation between the reverse thrust block 105 and the notch 202: The reverse thrust block 105 is cleverly designed, with one end being arc-shaped for easy rotation; the other end being engaged with the triangular notch 202, ensuring that it can accurately deflect upward and embed into the notch 202 when subjected to the thrust of the wedge block 104c, thereby achieving the purpose of re-tightening the tooth housing 201 and the seat body 101. This design requires that the size and shape of the reverse thrust block 105 be precisely matched with the notch 202 to achieve a reliable locking effect.

[0051] During the assembly stage, the pin 300 is inserted into the first mounting hole 106 and the second mounting hole 203 to lock the tooth housing 201 and the seat body 101. The unique chamfered ends of the pin 300 form a truncated cone design, which will generate an upward extrusion force when inserted, pushing the bottom of the straight rod 107d to move from the side of the end face of the pin 300, and pushing the straight rod 107d to move up along the direction of the insertion hole 107b. As the straight rod 107d moves upward, the slider 107c at its top rises synchronously along the inclined groove 107a, driving the rotating rod 103a installed on the slider 107c and the friction wheel 103b on the rotating rod 103a to move up together. In this way, the friction wheel 103b is close to the inner top surface of the tooth housing 201, ensuring effective contact between the friction rotating member 103 and the tooth housing 201. At the same time, the upward movement of the rotating rod 103a also promotes the upward movement of the one-way rotating member 103c and the gear in the transmission member 104, so that the gear is meshed with the upper rack 104b, preparing for the subsequent rotation transmission mechanism.

[0052] When looseness and shaking occur between the gear housing 201 and the seat body 101 during operation, the friction rotating member 103 rotates accordingly and drives the transmission member 104 to move through the one-way rotating member 103c. The design of the one-way rotating member 103c ensures unidirectional propulsion during the transmission process and avoids invalid reciprocating motion. Specifically, the rotation of the friction wheel 103b is transmitted to the ratchet 103c-3 in the ring 103c-2 through the fixedly connected ratchet 103c-1 structure. Due to the interaction between the ratchet 103c-1 and the ratchet teeth 103c-3, the ring 103c-2 is driven to rotate unidirectionally, and then the gear on the outer wall of the ring 103c-2 also rotates unidirectionally, pushing the rack 104b meshing with it to move forward. The continuous forward movement of the rack 104b causes the front end wedge block 104c to penetrate into the bottom of the reverse thrust block 105, causing the reverse thrust block 105 to deflect upward around the axis and finally embed into the notch 202 of the tooth housing 201, thereby achieving the re-tightening of the tooth housing 201 and the seat body 101.

[0053] As for the disassembly process, the pin shaft 300 must first be removed to release the upward force on the straight rod 107d. Subsequently, under the action of gravity, the slider 107c, the friction rotating member 103, the one-way rotating member 103c and the gear and other components descend in coordination, the gear and the rack 104b are disengaged, and the wedge block 104c loses the driving force. At this time, the gear housing 201 is pulled outward, and the groove 202 guides the reverse thrust block 105 to reset. The wedge block 104c naturally slips out of the bottom of the reverse thrust block 105, and the gear housing 201 and the seat body 101 are successfully separated, which facilitates the replacement or maintenance of the gear housing 201.

[0054] The remaining structure is the same as that of Example 2.

[0055] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0056] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0057] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An electric shovel bucket tooth, characterized in that: It comprises a tooth seat component (100) fixed on an electric shovel body, and a tooth tip component (200) mounted on the tooth seat component (100) via a pin shaft (300); The tooth seat component (100) comprises a seat body (101) mounted on the electric shovel body, a groove (102) is provided on the front side of the seat body (101), a friction rotating member (103) that can be raised and lowered is arranged inside the groove (102), the friction rotating member (103) drives a reverse thrust block (105) to rotate upwards through a transmission member (104), a first mounting hole (106) for inserting the pin shaft (300) is provided in the seat body (101), and a pushing member (107) for pushing the friction rotating member (103) to rise is installed between the groove (102) and the first mounting hole (106); The tooth tip component (200) comprises a tooth housing (201) sleeved on the front end of the seat body (101); a notch (202) is provided on the inner top surface of the tooth housing (201); the reverse thrust block (105) is rotated upward and inserted into the notch (202); a second mounting hole (203) for inserting the pin shaft (300) is provided in the tooth housing (201); The pushing member (107) comprises an inclined groove (107a) opened on the side wall of the groove (102) and facing the first mounting hole (106), and a plug hole (107b) connecting the inclined groove (107a) and the first mounting hole (106); a slider (107c) is slidably arranged in the inclined groove (107a); a straight rod (107d) is arranged at the bottom of the slider (107c); the straight rod (107d) is located in the plug hole (107b), and the lower end of the straight rod (107d) is located in the first mounting hole (106); the friction rotating member (103) comprises a plurality of sliding members (107a) and a plurality of sliding members (107b) installed at the two ends of the sliding member (107c); A rotating rod (103a) is provided between two sliders (107c); a friction wheel (103b) is rotatably arranged on the rotating rod (103a); a one-way rotating member (103c) is provided on the side of the friction wheel (103b); the one-way rotating member (103c) comprises a ratchet (103c-1) fixed to the side of the friction wheel (103b); a collar (103c-2) is sleeved on the outer wall of the ratchet (103c-1); a rotatable ratchet (103c-3) is provided inside the collar (103c-2); and the ratchet (103c-3) abuts against the ratchet (103c-1).

2. The electric shovel bucket tooth according to claim 1, characterized in that: The front end cross section of the seat body (101) is an inverted trapezoid, the cavity (204) inside the gear housing (201) is adapted thereto, and the groove (102) is located on the upper inclined surface of the trapezoid.

3. The electric shovel bucket tooth according to claim 1, characterized in that: The transmission member (104) comprises a gear ring (104a) mounted on the outside of the one-way rotating member (103c), a rack (104b) is arranged above the gear ring (104a), and a wedge block (104c) is arranged at the front end of the rack (104b).

4. The electric shovel bucket tooth according to claim 3, characterized in that: The reverse thrust block (105) is arranged on a side of the groove (102) away from the friction rotating member (103) via a rotating shaft (105a), and the wedge block (104c) is inserted into the bottom of the reverse thrust block (105).

5. The electric shovel bucket tooth according to claim 3, characterized in that: The outer wall of the rotating end of the reverse thrust block (105) is arranged in an arc shape, the notch (202) is arranged in a triangular shape, and the free end of the reverse thrust block (105) is inserted into the notch (202).

6. The electric shovel bucket tooth according to claim 1, characterized in that: The pin shaft (300) passes through the first mounting hole (106) and the second mounting hole (203) and is used to lock the tooth seat component (100) and the tooth tip component (200), and both ends of the pin shaft (300) are provided with chamfers and are truncated cone-shaped and are used to insert the lower end of the straight rod (107d).

7. The electric shovel bucket tooth according to claim 1, characterized in that: A raised step (108) is provided at the front end of the seat body (101), and the end surface of the gear housing (201) is abutted against the front surface of the step (108).

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