Shearer rocker arm clutch mechanism

Abstract

The present application provides a kind of shearer rocker arm clutch mechanism, including movable be arranged between the shaft gear of cutting motor and drum transmission mechanism Torque shaft, connect with the end of Torque shaft far from shaft gear to drive Torque shaft movement realizes the short shaft of clutch operation, installation seat is installed on cutting motor and is penetrated by short shaft, handle is arranged in the accommodation space of installation seat and is fixedly connected with the end of short shaft, still include: the long shaft of being set through short shaft and being opposite with the end surface of Torque shaft, long shaft is movably arranged relative to short shaft, and the end of long shaft towards Torque shaft is provided with the shaft head for being matched with the connecting groove of the end surface of Torque shaft, by moving long shaft, make shaft head embed connecting groove, to rotate the other end of long shaft drive Torque shaft synchronous rotation to specified angle position by another end of long shaft.The present application is rotated manually Torque shaft, makes Torque shaft and shaft gear realize spline alignment, to easily complete " the " operation, without disk movement drum or start cutting motor.

Description

Technical Field

[0001] This invention belongs to the field of coal mining machine technology, and specifically relates to a rocker arm clutch mechanism for a coal mining machine. Background Technology

[0002] The rocker arm clutch mechanism is a crucial structure on the rocker arm of a coal mining machine, primarily serving to separate the cutting motor and the drum drive system. Currently, a common problem with these clutch mechanisms is that when the clutch is disengaged (in the "disengaged" state), the rotor of the cutting motor easily rotates relative to the primary shaft assembly of the drum drive mechanism. When re-engaging (in the "engaged" state), the external spline of the clutch's torque shaft struggles to align and mesh smoothly with the internal spline of the primary shaft gear. Operators typically need to rotate the drum to drive the primary shaft gear or briefly start the cutting motor to rotate the torque shaft to achieve spline alignment. This operation is not only cumbersome and inefficient but also poses safety hazards in the complex underground environment, causing inconvenience for the maintenance and use of the coal mining machine. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a coal mining machine rocker arm clutch mechanism that can conveniently, quickly, and safely align the torque shaft with the shaft gear spline. After the clutch mechanism is disengaged, the external spline of the clutch mechanism can be accurately aligned with the internal spline of the shaft gear by manually rotating the torque shaft of the clutch mechanism on the motor side, thereby easily completing the engagement operation without needing to rotate the drum or start the cutting motor.

[0004] This invention provides a rocker arm clutch mechanism for a coal mining machine, connected between the cutting motor and the drum drive mechanism of the coal mining machine. It includes a torque shaft movably disposed between the shaft gears of the cutting motor and the drum drive mechanism to achieve torque transmission or power disconnection; a short shaft fixedly connected to the end of the torque shaft away from the shaft gears to drive the torque shaft to achieve clutch operation; a mounting base mounted on the cutting motor and penetrated by the short shaft; and a handle disposed within the receiving space of the mounting base and fixedly connected to one end of the short shaft for manual clutch operation. The rocker arm clutch mechanism of the coal mining machine also includes: A long shaft is provided through the short shaft and is positioned opposite the end face of the torque shaft. The long shaft is movable relative to the short shaft, and one end of the long shaft facing the torque shaft is provided with a shaft head for engaging with a connecting groove provided on the end face of the torque shaft. By moving the long shaft, the shaft head is inserted into the connecting groove, thereby rotating the other end of the long shaft to drive the torque shaft to rotate synchronously to a specified angle position.

[0005] Preferably, the handle includes a handle ring, and the other end of the long shaft passes through the handle ring and is fixed to the handle ring by an elastic element. The long shaft is pressed by the outer end of the long shaft to overcome the elastic force of the elastic element, so that the shaft end of the long shaft is inserted into the connecting groove. Furthermore, by rotating the handle ring, the torque shaft is rotated to a specified angle position.

[0006] Preferably, the long shaft has an end cap near the handlebar, and the end cap has a limiting boss on the side facing the handlebar. The elastic element is clamped between the limiting boss and the handlebar.

[0007] Preferably, the handle further includes a sleeve disposed on the outer side of the handle ring, the sleeve being used to accommodate the elastic element.

[0008] Preferably, the end cap has a limiting part extending horizontally on its end face away from the limiting boss, and the sleeve has a limiting groove at a position corresponding to the limiting part. Pressing the end cap overcomes the elastic force of the elastic element until the limiting part is embedded in the limiting groove, so that the shaft head is inserted into the connecting groove. Pressing the end cap and rotating the handle ring drives the long shaft to rotate synchronously, thereby driving the torque shaft to rotate synchronously.

[0009] Preferably, the shaft head and the long shaft are integrally formed or welded together; And / or, the end cap is provided with internal threads, the end of the long shaft is provided with external threads, and the end cap is threadedly fastened to one end of the long shaft.

[0010] Preferably, the connecting groove is in the shape of a straight line. The shaft head includes a main body connected to the end of the long shaft and extensions extending horizontally to both sides from the main body to match the connecting groove.

[0011] Preferably, the outer end of the torque shaft is recessed inward to form a receiving cavity, the short shaft is disposed in the receiving cavity by a fastening assembly, and a bearing assembly is sleeved between the short shaft and the torque shaft so that the long shaft can drive the torque shaft to rotate relative to the short shaft.

[0012] Preferably, the handle is fixed to one end of the short shaft by a key connection; And / or, the mounting base is provided with a skeleton oil seal at the bottom near the short shaft, the skeleton oil seal being connected to the short shaft by sliding friction.

[0013] Preferably, the rocker arm clutch mechanism of the coal mining machine further includes a seat sleeve, which is fixedly disposed at the open end of the mounting seat and forms a positioning groove between the mounting seat to limit the handle to the position corresponding to the operation.

[0014] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0015] The positive and progressive effects of this invention are as follows: According to the rocker arm clutch mechanism of the coal mining machine of the present invention, by moving the long shaft relative to the short shaft towards the torque shaft, the shaft end is connected to the connecting groove of the torque shaft. Then, manually rotating the long shaft drives the torque shaft to rotate synchronously, thereby aligning the external spline of the torque shaft with the internal spline of the shaft gear. At this time, by pushing the short shaft into the torque shaft, the "engagement" operation of the clutch mechanism can be easily achieved. The present invention enables the operator to manually and accurately adjust the angle of the torque shaft and complete the spline alignment on the rocker arm's working side when operating the rocker arm clutch mechanism. It eliminates the need to rotate the roller to drive the shaft gear or turn on the cutting motor to drive the torque shaft to rotate for alignment, thus easily completing the clutch operation, reducing the difficulty of operation and safety risks. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the rocker arm of the coal mining machine in an embodiment of the present invention (the clutch mechanism is in the engaged state).

[0017] Figure 2 This is a schematic diagram of the rocker arm of the coal mining machine in an embodiment of the present invention (the clutch mechanism is in the disengaged state).

[0018] Figure 3 This is a schematic diagram of the overall structure of the rocker arm clutch mechanism of the coal mining machine in an embodiment of the present invention.

[0019] Figure 4 yes Figure 3 Cross-sectional view along the AA direction.

[0020] Figure 5 This is a schematic diagram of the torque shaft in an embodiment of the present invention.

[0021] Figure 6 yes Figure 4 Cross-sectional view along the BB direction.

[0022] Figure 7 This is a schematic diagram of the long axis in an embodiment of the present invention.

[0023] Figure 8 yes Figure 6 View along the M direction.

[0024] Figure 9 This is an end view of the handle in an embodiment of the present invention.

[0025] Figure 10 yes Figure 8 Cross-sectional view along the CC direction. Detailed Implementation

[0026] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings. Example

[0027] like Figure 1 and Figure 2 As shown, this embodiment discloses a rocker arm clutch mechanism 100 for a coal mining machine, connected between the cutting motor 200 and the drum transmission mechanism 300 (only one shaft assembly of the transmission mechanism is shown in the figure), used to realize the power connection between the cutting motor 200 and the drum transmission mechanism 300 (e.g., Figure 1 (as shown) or power disconnection (such as) Figure 2 As shown in the figure, this drives the roller (not shown in the figure) to work or stop.

[0028] like Figures 1 to 3 As shown, the rocker arm clutch mechanism 100 of the coal mining machine includes: a torque shaft 10, a short shaft 20, a mounting base 30, a handle 40, and a long shaft 50.

[0029] The torque shaft 10 is movably disposed between the cutting motor 200 and the shaft gear 310 of the drum transmission mechanism 300 to realize torque transmission or power disconnection.

[0030] Specifically, such as Figure 4 As shown, the torque shaft 10 is rod-shaped, with one end being an end fitting section 11, which is used to fit with the hole of the shaft gear 310 to achieve positioning.

[0031] The torque shaft 10 has a first external spline 12 at one end near the end fitting section 11 and a second external spline 13 at the other end. The first external spline 12 is used to mesh with the internal spline of the shaft gear 310, and the second external spline 13 is used to mesh with the internal spline of the cutting motor 200, thereby realizing torque transmission through the torque shaft 10 when the clutch mechanism 100 is in the "engaged" state (e.g., ...). Figure 1 (as shown in the diagram). Conversely, when the clutch mechanism 100 is in the "disengaged" state, the first external spline 12 disengages from the internal spline of the shaft gear 310, preventing the torque shaft 10 from transmitting torque and thus disconnecting the power.

[0032] like Figures 1 to 3 As shown, the short shaft 20 is fixedly connected to the end of the torque shaft 10 away from the shaft gear 310, so as to drive the torque shaft 10 to move and realize the clutch operation. That is, as Figure 1 and Figure 2 Pull out or push in the short shaft 20 in the direction shown to perform the clutch operation.

[0033] The mounting base 30 is mounted on the cutting motor 200, specifically by fasteners 31 (such as screws, bolts, etc.) to be attached to the cutting motor 200. The mounting base 30 forms an accommodating space 32 with the opening facing outward (i.e. towards the old pond side). The end of the short shaft 20 away from the torque shaft 10 passes through the mounting base 30 and is accommodated in the accommodating space 32 of the mounting base 30.

[0034] The handle 40 is fixedly connected to the end of the short shaft 20 away from the torque shaft 10 and is located in the receiving space 32 of the mounting base 30. The handle 40 facilitates the pulling out or pushing in operation of the short shaft 20. The receiving space 32 protects the handle 40 and the short shaft 20 from damage or misoperation caused by coal blocks or other objects during the coal mining process.

[0035] The long shaft 50 is set to completely penetrate the short shaft 20 at both ends and is set opposite to the axial end face of the torque shaft 10; in addition, the long shaft 50 is movable relative to the short shaft 20, so that it can be close to or away from the torque shaft 10.

[0036] For example Figure 2 As shown, a shaft head 51 is provided at one end of the long shaft 50 facing the torque shaft 10. A connecting groove 14 is provided on the end face of the torque shaft 10. The shaft head 51 is matched with the connecting groove 14, so that the shaft head 51 can be embedded in the connecting groove 14, thereby connecting the long shaft 50 and the torque shaft 10, so that the torque shaft 10 can be rotated to a specified angle position by the long shaft 50. The specified angle position here refers to the position where the spline of the torque shaft 10 and the shaft gear 310 can be aligned.

[0037] In summary, according to the rocker arm clutch mechanism of this embodiment, by moving the long shaft 50 relative to the short shaft 20 towards the torque shaft 10, the shaft head 51 is connected to the connecting groove 14 of the torque shaft 10. Then, manually rotating the long shaft 50 will drive the torque shaft 10 to rotate synchronously, thereby aligning the external spline 12 of the torque shaft 10 with the internal spline of the shaft gear 310. At this time, by pushing the short shaft 20 into the torque shaft 10, the "engagement" operation of the clutch mechanism can be easily achieved. Therefore, this embodiment enables the operator to manually and accurately adjust the torque shaft angle and complete the spline alignment on the rocker arm clutch mechanism from the rocker arm's working side, eliminating the need to rotate the roller to drive the shaft gear or turn on the cutting motor to drive the torque shaft to rotate for alignment. This easily completes the clutch operation, reducing operational difficulty and safety risks.

[0038] In another embodiment, such as Figure 1 , Figure 2 , Figure 3 and Figure 10 As shown, the handle 40 includes a handle ring 41, which has a similar rectangular ring structure. One side is fixed to the short shaft 20, and the other side is convenient for the operator to hold and perform pull-out or push-in operations.

[0039] For example Figure 3 As shown, the other end of the long shaft 50 also passes through the handle ring 41 and is fixed to the handle ring 41 by an elastic element 52. Thus, pressing the long shaft 50 with its outer end overcomes the elastic force of the elastic element 52, causing the long shaft 50 to move and further insert the shaft head 51 into the connecting groove 14. Furthermore, rotating the handle ring 41 can drive the torque shaft 10 to rotate to a specified angle position. The handle ring 41 allows for easy rotation of both the long shaft 50 and the torque shaft 10. Specifically, the handle ring 41 is fixed to one end of the short shaft 20 by a key connection, such as... Figure 3 The key 42 and the retaining ring 43 in the middle will fix the ring 41 to one end of the short shaft 20.

[0040] In one specific implementation, such as Figure 3 and Figure 7 As shown, the end of the long shaft 50 near the handle 41 is provided with an end cap 53. A limiting boss 531 is provided on the side of the end cap 53 facing the handle 41, and an elastic element 52 is sandwiched between the limiting boss 531 and the handle 41. Furthermore, the elastic element 52 is in a pre-compressed state, maintaining a certain elastic force. Combined with the limiting effect of the shaft head 51 at the other end of the long shaft 50, the long shaft 50 can be movable relative to the short shaft 20 through the elastic element 52. Here, a matching spring can be used as the elastic element 52.

[0041] In addition, such as Figure 3 and Figure 9 As shown, the handle 40 also includes a sleeve 44 disposed on the outer side of the handle ring 41, the sleeve 44 being used to accommodate the elastic element 52 (such as...). Figure 2 (As shown).

[0042] To achieve synchronous rotation of the long shaft 50 and the handle 40, such as Figure 7 and Figure 8 As shown, a limiting portion 532 extends horizontally along the end face of the end cap 53 away from the limiting boss 531, such as... Figure 9 As shown, the sleeve 44 has a limiting groove 421 at a position corresponding to the limiting part 532, and the limiting part 532 is matched with the limiting groove 42. In this way, by pressing the end cap 53, the elastic force of the elastic element 52 is overcome until the limiting part 532 is embedded in the limiting groove 421, and at the same time, the shaft head 51 is inserted into the connecting groove 14. Furthermore, by pressing the end cap 53 and rotating the handle ring 41, the long shaft 50 can be rotated synchronously, which in turn can drive the torque shaft 10 to rotate synchronously to a preset angle position, thus easily achieving the spline alignment of the torque shaft 10 and the shaft gear 321. Moreover, after the clutch mechanism completes the "engagement" operation, by releasing the end cap 53, the long shaft 50 can be disengaged from the torque shaft 10 under the elastic force of the elastic element 52, thereby avoiding affecting the normal transmission function.

[0043] like Figure 7As shown, the end cap 53 is provided with internal threads, and the corresponding end of the long shaft 50 is provided with external threads. The end cap 53 is threadedly fastened to one end of the long shaft 50.

[0044] In another embodiment, to facilitate connection and synchronized rotation, in one specific implementation, such as Figure 6 As shown, the connecting groove 14 is configured in a straight line shape, and correspondingly, the shaft head 51 is also configured in a straight line shape, so that it can be smoothly inserted into the connecting groove 14. Specifically, as shown... Figure 7 As shown, the shaft head 51 includes a main body 511 connected to the end of the long shaft 50 and extension portions 512 extending horizontally to both sides from the main body 511, thereby enabling the shaft head 51 to be inserted into the connecting groove 14 (e.g., Figure 4 (As shown in the diagram). Here, the shaft head 52 and the long shaft 50 can be integrally formed or welded together.

[0045] In another embodiment, to achieve a stable connection between the torque shaft 10 and the short shaft 20, such as Figure 3 As shown, the torque shaft 10 has a recessed cavity 15 at its outer end facing the short shaft 20. The short shaft 20 is mounted in the cavity 15 via a fastening assembly, thereby enabling the torque shaft 10 to move synchronously to achieve clutch operation. Furthermore, when the clutch mechanism switches from the disengaged state to the engaged state, a bearing assembly 21 is fitted between the short shaft 20 and the torque shaft 10 to facilitate synchronous rotation of the torque shaft 10 by the long shaft 50. This allows the torque shaft 10 to rotate relative to the short shaft 20 under the action of the bearing assembly 21 when the long shaft 50 rotates, making operation easy and quick. Preferably, the bearing assembly 21 can be two bearings sequentially fitted onto the short shaft 20. In this case, the torque shaft 10 is specifically fixed to the short shaft 20 via fasteners 22, two bearings 21, a washer 23, and a retaining ring 24.

[0046] In another embodiment, based on the above structure, such as Figure 3 As shown, the mounting base 30 has a skeleton oil seal 33 at its bottom near the short shaft 10. The skeleton oil seal 33 is connected to the short shaft 20 by sliding friction, thereby providing a sliding seal between the short shaft 20 and the mounting base 30. In addition, the rocker arm clutch mechanism 100 of the coal mining machine also includes a seat sleeve 60. The seat sleeve 60 is fixed to the open end of the mounting base 30 by fasteners 61, and a positioning groove 62 is formed between the side walls of the mounting base 30 to limit the handle 40 to the position corresponding to the disengagement operation. The positioning groove 62 cooperates with the positioning protrusion 43 on the handle 40 to achieve positioning after the handle 40 is pushed or pulled to perform the disengagement operation, preventing misoperation during the operation or maintenance of the coal mining machine.

[0047] Based on the above structure, in this embodiment, when the torque shaft needs to be engaged with the gear's spline, the operator presses the end cover, compressing the spring so that the limiting part on the end cover is embedded in the limiting groove of the sleeve of the handle ring. At this time, rotating the handle ring transmits its rotational force to the long shaft through the cooperation of the protrusion and groove (i.e., the limiting part and the limiting groove), causing the shaft head of the long shaft to rotate. Since the shaft head is inserted into the connecting groove of the torque shaft, it drives the torque shaft to rotate together. By rotating the handle, the angle of the torque shaft can be adjusted so that its first external spline aligns with the internal spline of the gear. After alignment, pushing the handle pushes the torque shaft into the gear, completing the "engagement" operation.

[0048] After the operation is completed, loosen the end cover. Under the restoring force of the spring, the end cover is pushed back, and the protrusion disengages from the groove in the handle. At the same time, the shaft head of the long shaft also disengages from the groove in the torque shaft. At this point, the torque shaft is disconnected from the long shaft, restoring normal working transmission and avoiding interference with the transmission system. The power of the cutting motor is then transmitted normally through the torque shaft.

[0049] This embodiment utilizes a simple mechanical action of pressing the end cap, rotating the handle ring, and releasing the end cap to transmit power through the engagement of the convex and concave grooves. This allows the torque shaft to rotate easily and quickly to the position where it is splined with the shaft gear. After alignment, the handle ring is pushed in, and the torque shaft meshes with the shaft gear under the drive of the short shaft. Finally, the end cap is released, and the long shaft automatically resets and disengages under the action of the spring. This does not affect the normal transmission function of the clutch mechanism. The structure is ingenious, highly reliable, improves work efficiency, and significantly shortens the "engagement" operation time of the clutch mechanism.

[0050] The scope of protection of this invention is not limited to the embodiments described above. Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its scope and spirit. If these modifications and variations fall within the scope of the claims of this invention and their equivalents, then the intent of this invention also includes these modifications and variations.

Claims

1. A rocker arm clutch mechanism for a coal mining machine, connected between a cutting motor and a drum drive mechanism of the coal mining machine, comprising a torque shaft movably disposed between the shaft gears of the cutting motor and the drum drive mechanism to achieve torque transmission or power disconnection; a short shaft fixedly connected to one end of the torque shaft away from the shaft gears for driving the torque shaft to move and achieve clutch operation; a mounting base mounted on the cutting motor and penetrated by the short shaft; and a handle disposed within a receiving space of the mounting base and fixedly connected to one end of the short shaft for manual clutch operation, characterized in that... The rocker arm clutch mechanism of the coal mining machine also includes: A long shaft is provided through the short shaft and is positioned opposite the end face of the torque shaft. The long shaft is movable relative to the short shaft, and one end of the long shaft facing the torque shaft is provided with a shaft head for engaging with a connecting groove provided on the end face of the torque shaft. By moving the long shaft, the shaft head is inserted into the connecting groove, thereby rotating the other end of the long shaft to drive the torque shaft to rotate synchronously to a specified angle position.

2. The rocker arm clutch mechanism of the coal mining machine as described in claim 1, characterized in that, The handle includes a handle ring, and the other end of the long shaft passes through the handle ring and is fixed to the handle ring by an elastic element. The long shaft is pressed by the outer end of the long shaft to overcome the elastic force of the elastic element, so that the shaft end of the long shaft is inserted into the connecting groove. Furthermore, by rotating the handle ring, the torque shaft is rotated to a specified angle position.

3. The rocker arm clutch mechanism of the coal mining machine as described in claim 2, characterized in that, The long shaft has an end cap near the handle ring, and a limiting boss is provided on the side of the end cap facing the handle ring. The elastic element is clamped between the limiting boss and the handle ring.

4. The rocker arm clutch mechanism of the coal mining machine as described in claim 3, characterized in that, The handle also includes a sleeve disposed on the outer side of the handle ring, the sleeve being used to accommodate the elastic element.

5. The rocker arm clutch mechanism of the coal mining machine as described in claim 4, characterized in that, The end cap has a limiting part extending horizontally on its end face away from the limiting boss. The sleeve has a limiting groove at a position corresponding to the limiting part. Pressing the end cap overcomes the elastic force of the elastic element until the limiting part is embedded in the limiting groove, so that the shaft head is inserted into the connecting groove. Pressing the end cap and rotating the handle ring drives the long shaft to rotate synchronously, thereby driving the torque shaft to rotate synchronously.

6. The rocker arm clutch mechanism of the coal mining machine as described in claim 5, characterized in that, The shaft head and the long shaft are integrally formed or welded together; And / or, the end cap is provided with internal threads, the end of the long shaft is provided with external threads, and the end cap is threadedly fastened to one end of the long shaft.

7. The rocker arm clutch mechanism of the coal mining machine as described in claim 1, characterized in that, The connecting groove is in the shape of a straight line. The shaft head includes a main body connected to the end of the long shaft and extensions extending horizontally to both sides from the main body to match the connecting groove.

8. The rocker arm clutch mechanism of the coal mining machine as described in claim 1, characterized in that, The outer end of the torque shaft is recessed inward to form a receiving cavity. The short shaft is set in the receiving cavity by a fastening assembly. A bearing assembly is sleeved between the short shaft and the torque shaft so that the long shaft can drive the torque shaft to rotate relative to the short shaft.

9. The rocker arm clutch mechanism of the coal mining machine as described in claim 1, characterized in that, The handle is fixed to one end of the short shaft by a key connection; And / or, the mounting base is provided with a skeleton oil seal at the bottom near the short shaft, the skeleton oil seal being connected to the short shaft by sliding friction.

10. The rocker arm clutch mechanism of the coal mining machine as described in claim 1, characterized in that, It also includes a seat cover, which is fixedly disposed at the open end of the mounting base and has a positioning groove formed between the mounting base to limit the handle to the position corresponding to the operation.

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