Gear shaft mounting structure and gear box

Abstract

The technical scheme belongs to the technical field of mechanical cutting, and particularly relates to a gear shaft mounting structure and a gearbox, the gear shaft mounting structure comprises a frame body part, the frame body part is provided with a mounting cavity, the upper end face, corresponding to the frame body part, of the mounting cavity is provided with an opening for mounting a speed reducing mechanism, the frame body part is provided with a cover plate part, and the cover plate part is mounted at the opening; the frame body part is provided with two boss parts, and the two boss parts are arranged on the opposite side walls of the mounting cavity in the mounting direction of the speed reducing mechanism in a one-to-one correspondence mode; a positioning groove is formed between the boss part and the cover plate part and comprises a positioning groove I formed in the upper part of the boss part and a positioning groove II formed in the lower part of the cover plate part; after the cover plate part is installed, the first positioning groove is matched with the second positioning groove, so that the speed reducing mechanism is limited in the positioning groove to rotate, the installation mode is optimized, assembly is simpler during carrying, and therefore the installation efficiency is improved, and the installation convenience is improved.

Description

Technical Field

[0001] The present technical solution relates to the field of mechanical cutting technology, and in particular to a gear shaft mounting structure and a gear box. Background Art

[0002] The mechanical cross-cutting device is a device that uses a hydraulic cylinder as a power source to cut the processed material, and all shearing is done by a cutter.

[0003] For example, Chinese patent CN208714066U discloses a gear shaft mounting structure and a gear box, including a frame portion, a crankshaft connecting rod mechanism is provided on the frame portion, a cross-cutting device is provided at one end of the crankshaft connecting rod mechanism, the cross-cutting device includes a slider, a cross-cutting groove is provided in the middle of the slider, a cross-cutting cutter and a cross-cutting ejector are provided in the cross-cutting groove, a right oil cylinder is provided at one end of the slider, the right oil cylinder abuts on one end face of the slider, and the cross-cutting ejector is connected to the right oil cylinder through a piston rod on the right oil cylinder. This example uses a crankshaft connecting rod mechanism as a transmission method, the main power source is to drive the crankshaft, the crankshaft drives the connecting rod, the connecting rod drives the slider, and then the slider reciprocates.

[0004] The above-mentioned mechanical cross-cutting device has a reduction mechanism connected to the crankshaft inside its frame. The reduction mechanism usually includes a rotating shaft and a gear fixed on the rotating shaft. Due to the large overall weight of the reduction mechanism, it is difficult to carry. It is often necessary to disassemble the rotating shaft and the gear for multiple transportation. During installation, the reduction mechanism needs to be horizontally lifted in from the side through the shaft hole, and the position needs to be adjusted by knocking multiple times. The installation is troublesome and needs to be improved. Summary of the Invention

[0005] In order to improve the problem that the existing speed reduction mechanism is heavy and requires multiple adjustments after horizontal lifting and installation, which causes installation troubles, this technical solution provides a gear shaft installation structure and a gear box.

[0006] The purpose of this technical solution is achieved in this way:

[0007] A gear shaft mounting structure and a gear box, comprising a frame portion and a cover portion, wherein the frame portion has a mounting cavity, the mounting cavity includes a mounting opening formed at the upper end of the frame portion, and the cover portion is mounted on the mounting opening, characterized in that:

[0008] a boss portion, which is provided on the frame portion, and the boss portion symmetrically protrudes from opposite side walls in the installation cavity;

[0009] a first positioning groove, which is provided on the upper portion of the boss portion;

[0010] The second positioning groove is correspondingly arranged at the lower part of the cover plate portion. The second positioning groove can be spliced ​​with the first positioning groove to form a positioning cavity for constraining the speed reduction mechanism.

[0011] Through the above technical solution, when a gear shaft mounting structure and a gear box are in normal use, the cover plate portion is removed from the frame portion, so that the mounting opening at the upper end of the mounting cavity is opened, and the lifting equipment is used to lift the reduction mechanism and place it into the mounting cavity through the mounting opening. At this time, the two ends of the reduction mechanism are respectively placed in the positioning grooves 1 on the boss portions on both sides, so that the lower part of the reduction mechanism is embedded in the positioning groove 1 for preliminary positioning. After the cover plate portion is installed, the positioning groove 2 and the notch of the positioning groove 1 are opposite and close to each other to form a complete positioning cavity. The upper part of the reduction mechanism is placed in the positioning groove 2. The positioning cavity provides a complete constraint space to constrain the stable rotation of the reduction mechanism in the groove, optimizes the installation method, makes transportation and assembly easier, and thus improves installation efficiency.

[0012] Preferably, the boss portion has a limiting portion 1, which is located at the bottom of the positioning groove 1 and protrudes toward the installation direction of the cover portion;

[0013] The bottom of the second positioning groove has a corresponding protruding limiting portion 2, which cooperates with the limiting portion 1 to be ring-connected to the outer peripheral side of the speed reduction mechanism.

[0014] Through the above technical solution, when the positioning groove 1 and the positioning groove 2 are tightly connected, the limiting part 1 and the limiting part 2 are spliced ​​to form a stable locking structure to limit the oil on the rotating shaft from leaking from the processing hole, thereby improving the sealing effect.

[0015] Preferably, the frame portion is processed to form the first positioning groove by a drill device, so that a corresponding processing hole is left on the side wall of the frame portion.

[0016] Through the above technical solution, the frame part is drilled by a drill bit device and a processing hole is formed, so that a positioning groove is processed at the position corresponding to the boss part, and a limiting part is left at the other end along the processing direction. By controlling the drilling amount, a limiting part of different thicknesses can be obtained.

[0017] Preferably, the cover portion includes a top plate portion and a side plate portion provided on the top plate portion, and the lower portion of the side plate portion is provided with the second positioning groove;

[0018] An installation portion is formed on the upper end of the frame portion around the installation opening, and an installation groove is formed on the inner side of the frame portion corresponding to the installation portion, and the protruding portion of the edge of the top plate portion can be embedded in the installation groove.

[0019] Through the above technical solution, the cover part is installed by embedding the side plate part into the installation cavity, and the top plate part can be embedded in the position of the installation slot. At this time, the upper end surface of the top plate part is flush with the upper end surface of the installation part, and the top plate part is aligned with the hole position at the bottom of the installation slot and connected with screws, so that the cover part and the frame part are fixed and firmly connected, reducing the time for aligning the connection holes and improving the stability and convenience of the installation of the cover part.

[0020] Preferably, the side plate portion has abutment protrusions, which protrude from the outer wall of the side plate portion, so that a gap area is left between the outer wall of the side plate portion and the inner wall of the installation cavity.

[0021] Through the above technical solution, the abutting protrusion is based on the protrusion from the outer wall of the side panel, so that during the installation process, a certain gap area can be naturally left between the outer wall of the side panel and the inner wall of the installation cavity, thereby reducing the friction between the side panel and the inner wall of the installation cavity, further improving the convenience of installation, and by the abutting protrusion contacting the inner wall of the installation cavity, its elastic deformation improves the deformation resistance of the side panel.

[0022] Preferably, a gearbox comprises a gearbox body, at least one gear shaft mounting structure as described above, and a reduction mechanism mounted in the mounting cavity, the reduction mechanism comprising a rotating shaft and a gear disposed on the rotating shaft, the rotating shaft and the gear being coaxially disposed and rotatably connected relative to the mounting cavity;

[0023] The length of the rotating shaft is adapted to the spacing distance between the bosses on both sides, so that when the reduction mechanism is installed in the installation cavity, both ends of the rotating shaft can be embedded in the positioning grooves on both sides in a one-to-one correspondence.

[0024] Through the above technical solution, the rotating shaft in the reduction mechanism can be placed in the installation cavity with its length direction aligned with the width direction, so that both ends of the rotating shaft are aligned and positioned in the positioning grooves on both sides, ensuring that the reduction mechanism can be installed and used normally.

[0025] Preferably, the rotating shaft is provided with bearings, the bearings are respectively sleeved on both ends of the rotating shaft, and the bearings are correspondingly installed in the positioning cavity for positioning.

[0026] Through the above technical solution, the lower end face of the bearing member is fixed against the bottom of the first positioning groove, and the upper end is located in the second positioning groove. A rotating shaft is passed through the inner side to guide the rotation of the rotating shaft, thereby minimizing the impact of friction on rotation and improving stability.

[0027] Preferably, the frame portion is provided with an axial hole, which includes an axial hole 1 and an axial hole 2, and the boss portion is provided with an inner hole 1 at a position corresponding to the axial hole 1, wherein the inner hole 1 on one side is correspondingly connected to the axial hole 1;

[0028] The gear box body is further provided with a second inner hole at a position corresponding to the second shaft hole.

[0029] Through the above technical solution, inner hole one is set at the position of the two boss parts corresponding to the shaft hole one, ensuring the connection between shaft hole one and inner hole one, so that one end of the power shaft assembly can be installed in inner hole one on one side, and the other end passes through inner hole one and extends to the outside of shaft hole one for connection with the power source; inner hole two is set at the position of the gear box body corresponding to shaft hole two, ensuring that shaft hole two and inner hole two are aligned and connected, so that one end of the brake and clutch device passes through inner hole two to the outside of shaft hole two.

[0030] Compared with the existing technology, this technical solution has the following outstanding and beneficial technical effects:

[0031] 1. This technical solution removes the cover plate from the frame body, opens the installation opening at the upper end of the installation cavity, and places the reduction mechanism through the installation opening and aligns it with the positioning grooves 1 on both sides into the installation cavity. The lower part of the reduction mechanism is embedded in the positioning groove 1 for preliminary positioning. After the cover plate is installed, the upper part of the reduction mechanism is correspondingly embedded in the positioning groove 2. The positioning groove provides a complete engagement space, accurately engages the end of the reduction mechanism, and ensures that the reduction mechanism rotates stably in the groove. The optimized installation method makes handling and assembly simpler, thereby improving installation efficiency and further improving installation convenience.

[0032] 2. This technical solution is provided with a limiting part 1 on the boss part, which is located at the bottom of the positioning groove 1 and protrudes toward the installation direction of the cover part. A limiting part 2 is provided at the corresponding position of the positioning groove 2. When the positioning groove 1 is connected with the positioning groove 2, the limiting part 1 and the limiting part 2 are spliced ​​to form a stable locking structure to limit the oil on the rotating shaft of the reduction mechanism from leaking from the processed hole, thereby improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0034] Figure 2 This is a partial explosion diagram of this embodiment;

[0035] Figure 3 It is a partial cross-sectional schematic diagram of this embodiment;

[0036] Figure 4 Schematic diagram of the overall structure of the cover plate portion in the embodiment;

[0037] Figure 5 This is a schematic diagram of the partial structure of the frame portion in the embodiment;

[0038] Figure 6 For this embodiment Figure 5 Schematic diagram from another perspective;

[0039] Figure 7 This is a schematic diagram of the cross-sectional structure of the frame portion and the cover portion in the embodiment;

[0040] Figure 8 For this embodiment Figure 1 Schematic diagram from another perspective;

[0041] Figure 9 In this embodiment Figure 8 A partial enlarged schematic diagram.

[0042] Figure markings: 1. frame portion; 2. cover portion; 21. top plate portion; 22. side plate portion; 3. mounting cavity; 4. mounting opening; 5. boss portion; 6. positioning cavity; 61. positioning groove one; 62. positioning groove two; 8. machining hole; 9. limiting portion one; 10. limiting portion two; 11. bearing member; 12. mounting portion; 13. mounting groove; 14. abutting protrusion; 15. clearance area; 16. shaft hole; 17. inner hole one; 18. reduction mechanism; 181. rotating shaft; 182. gear; 19. gearbox body; 20. inner hole two. DETAILED DESCRIPTION

[0043] The specific implementation of the technical solution is further described in detail below with reference to the accompanying drawings.

[0044] Example:

[0045] See also Figure 1 and Figure 2 A gear shaft mounting structure includes a frame portion 1 with a mounting cavity 3 inside. The mounting cavity 3 is rectangular and has a mounting opening 4 corresponding to the upper end surface of the frame portion 1.

[0046] See also Figure 2 and Figure 4 The frame body 1 is provided with a cover plate portion 2, which is installed in the mounting opening 4 and is fixedly connected to the frame body 1 for covering the mounting cavity 3. The cover plate portion 2 includes a top plate portion 21 and a side plate portion 22. The side plate portion 22 is integrally fixed to the lower end surface of the top plate portion 21, and the edge portion of the top plate portion 21 is protruded relative to the side plate portion 22. The specific fixed connection method of the cover plate portion 2 is that the frame body 1 has a mounting portion 12, which is arranged around the mounting opening 4 and protrudes from the upper end surface of the frame body 1. A mounting groove 13 is formed between the inner side wall close to the accommodating cavity side and the upper end surface of the frame body 1, and the edge portion of the top plate portion 21 can just be embedded in the mounting groove 13 on the peripheral side. In this embodiment, a situation is shown in which corresponding bolt holes are provided on the top plate portion 21 and the frame body 1, so that the bolts are connected to the bolt holes of the frame body 1 after passing through the bolt holes of the top plate portion 21, thereby realizing a fixed connection between the cover plate portion 2 and the frame body 1.

[0047] The side plate portion 22 has abutting protrusions 14, which protrude from the outer walls of the side plate portion 22 on opposite sides, such as Figure 8 and Figure 9As shown, when the cover plate portion 2 is installed, the abutting protrusion 14 abuts against the inner wall of the installation cavity 3 so that a gap area 15 is left between the side plate portion 22 and the inner wall of the installation cavity 3 . The gap size of the gap area 15 matches the thickness of the abutting protrusion 14 .

[0048] See also Figure 5 and Figure 6 The frame portion 1 has a boss portion 5, and there are two boss portions 5. The two boss portions 5 are arranged one-to-one on the opposite side walls of the installation direction of the speed reduction mechanism 18 in the installation cavity 3. A positioning cavity 6 is formed between the boss portion 5 and the cover portion 2, which includes two groups of positioning cavities 6. The two groups of positioning cavities 6 correspond one-to-one to the two speed reduction mechanisms 18. Each group of positioning cavities 6 includes two positioning cavities 6. The two positioning cavities 6 correspond one-to-one to the two ends of each rotating shaft 181. The two positioning cavities 6 in each group are symmetrically arranged one-to-one along the embedding direction of the speed reduction mechanism 18; each positioning cavity 6 includes a positioning groove 1 61 and a positioning groove 2 62. The positioning groove 1 61 is arranged on the upper end surface of the boss portion 5, and the positioning groove 2 62 is correspondingly arranged on the lower end surface of the side plate portion 22.

[0049] See also Figure 3 and Figure 7 The frame body 1 is provided with a processing hole 8, which is processed and formed into two by a drill bit device. The two processing holes 8 can be arranged in a one-to-one correspondence with the two positioning cavities 6. The boss portion 5 has a limiting portion 9, which is located at the bottom of the positioning groove 61 and protrudes toward the installation direction of the cover plate portion 2. The drill bit device is processed to form a positioning groove 61 and a limiting portion 9, and the limiting portion 9 is located in the corresponding positioning groove 61 away from the through end on the side of the processing hole 8. A limiting portion 10 is provided at the corresponding position of the positioning groove 62. When the cover plate portion 2 is installed, the limiting portion 10 is spliced ​​close to the limiting portion 9, so that the ring is connected to the outer peripheral side of the rotating shaft 181 to prevent oil from leaking from the processing hole 8.

[0050] The specific working process of this program is as follows:

[0051] The present technical solution is to provide a cover portion 2 on the frame portion 1, remove the cover portion 2 by loosening the bolts to open the mounting opening 4 at the upper end of the mounting cavity 3, activate the lifting equipment to lift the speed reduction mechanism 18 and place it into the mounting cavity 3 through the mounting opening 4, at this time, the two ends of the speed reduction mechanism 18 are respectively placed in the positioning grooves 1 61 on the boss portions 5 on both sides, so that the lower part of the speed reduction mechanism 18 is embedded in the positioning groove 1 61 for preliminary positioning. After the cover portion 2 is installed, the positioning groove 2 62 is opposite to the notch of the positioning groove 1 61 and is close to each other to form a complete positioning cavity 6, and the upper part of the speed reduction mechanism 18 is placed in the positioning groove 2 62. The positioning groove provides a complete engaging space, which accurately engages the bearing component 11. The bearing component 11 is sleeved on the end of the rotating shaft of the speed reduction mechanism 18 to ensure that the speed reduction mechanism 18 rotates stably in the bearing component 11. The optimized installation method makes handling and assembly simpler, thereby improving the installation efficiency and thus improving the convenience of installation.

[0052] See also Figure 1 、 Figure 2 and Figure 3 A gearbox includes a gearbox body and a reduction mechanism 18, which is installed in the installation cavity 3. The reduction mechanism 18 shown in this embodiment is provided with two groups. Each group of reduction mechanisms 18 includes a rotating shaft 181 and a gear 182. The gear 182 is coaxially fixed on the rotating shaft 181. The rotating shaft 181 and the gear 182 rotate synchronously relative to the installation cavity 3. The width dimension of the installation cavity 3 is adapted to the length dimension of the rotating shaft 181, so that the rotating shaft 181 carrying the gear 182 can be installed in the installation cavity 3 through the installation opening 4.

[0053] The rotating shaft 181 is provided with a bearing part 11, and each rotating shaft 181 is sleeved with two bearing parts 11. The two bearing parts 11 are arranged one by one at the two ends of the rotating shaft 181 to guide the rotation of the rotating shaft 181. The bearing part 11 can be a bearing or a combination of two bearing bushes. When a bearing is selected, it is necessary to pre-sleeve the installation cavity 3 of the reduction mechanism 18 on the end of the rotating shaft 181. When two bearing bushes are selected, it includes bearing bush 1 and bearing bush 2. Bearing bush 1 is placed in positioning groove 1 61, and its lower end face is against the bottom of the positioning groove 1 61. After the lower part of the rotating shaft 181 is against the inner side of the bearing bush, the bearing bush 2 is covered on the upper part of the rotating shaft 181, so that the two bearing bushes are respectively supported on both sides of the outer periphery of the rotating shaft 181. When the cover plate part 2 is installed, the bearing bush 2 is located in the positioning groove 2 62 to limit its detachment. The positioning groove 1 61 cooperates with the positioning groove 2 62 to confine the bearing part 11 as a whole to the positioning cavity 6.

[0054] The frame portion 1 is also provided with an axial hole, of which there are two, namely axial hole 161 and axial hole 2 162. Each boss portion 5 is provided with an inner hole 17 corresponding to the axial hole 161, wherein the inner hole 17 on one side is connected to the axial hole 161, and the inner hole 17 on the other side is arranged in correspondence with the axial hole 161. In this embodiment, a power shaft assembly is passed through the axial hole 161, which includes a power shaft and a transmission wheel arranged on the power shaft. The transmission wheel is engaged with the gear 182 for transmission. One end of the power shaft is embedded in the inner hole 17 on one side, and the other end is passed through the inner hole 17 on the other side and extends to the outside of the axial hole 16. The shaft is used to connect the power source; the gear box body 19 is provided with an inner hole 20 corresponding to the position of the axial hole 2 162 to ensure that the axial hole 2 162 is aligned with the inner hole 20, so that one end of the brake and clutch device passes through the inner hole 20 to the outside of the axial hole 2 162.

[0055] The above shows and describes the basic principles and main features of the present technical solution and the advantages of the present technical solution. Those skilled in the art should understand that the present technical solution is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present technical solution. Various changes and improvements may be made to the present technical solution without departing from the spirit and scope of the present technical solution. Such changes and improvements fall within the scope of the present technical solution for which protection is sought. The scope of protection claimed by the present technical solution is defined by the appended claims and their equivalents.

Claims

1. A gear shaft mounting structure, comprising a frame portion (1) and a cover portion (2), wherein the frame portion (1) has a mounting cavity (3), the mounting cavity (3) includes a mounting opening (4) formed at the upper end of the frame portion (1), and the cover portion (2) is mounted on the mounting opening (4), characterized in that: A boss portion (5) is provided on the frame portion (1), and the boss portion (5) protrudes symmetrically from opposite side walls in the installation cavity (3); a first positioning groove (61) provided on the upper portion of the boss portion (5); The second positioning groove (62) is correspondingly arranged at the lower part of the cover plate portion (2). The second positioning groove (62) can be spliced ​​with the first positioning groove (61) to form a positioning cavity (6) for constraining the speed reduction mechanism.

2. The gear shaft mounting structure according to claim 1, characterized in that: The boss portion (5) has a limiting portion (9), and the limiting portion (9) is located at the bottom of the positioning groove (61) and protrudes toward the installation direction of the cover portion (2); The bottom of the second positioning groove (62) has a corresponding protruding limiting portion (10), which is used to be ring-connected to the outer peripheral side of the speed reduction mechanism through the cooperation of the limiting portion (10) and the limiting portion (9).

3. The gear shaft mounting structure according to claim 1, characterized in that: The frame portion (1) is machined to have the positioning groove (61) by a drilling device, so that a corresponding machining hole (8) is left on the side wall of the frame portion (1).

4. The gear shaft mounting structure according to claim 3, characterized in that: The cover plate portion (2) includes a top plate portion (21) and a side plate portion (22) arranged on the top plate portion (21), and the lower portion of the side plate portion (22) is provided with the second positioning groove (62); The upper end of the frame portion (1) is formed with a mounting portion (12) around the mounting opening (4), and the inner side surface of the frame portion corresponding to the mounting portion (12) is formed with a mounting groove (13), and the protruding portion of the edge of the top plate portion (21) can be embedded in the mounting groove (13).

5. The gear shaft mounting structure according to claim 4, characterized in that: The side plate portion (22) is provided with abutting protrusions (14), which protrude from the outer wall of the side plate portion (22), so that a gap area (15) is left between the outer wall of the side plate portion (22) and the inner wall of the installation cavity (3).

6. A gearbox, comprising a gearbox body (19), characterized in that: The invention further comprises at least one gear shaft mounting structure according to any one of claims 1 to 5, and further comprises a speed reduction mechanism (18), which is mounted in the mounting cavity (3), the speed reduction mechanism (18) comprising a rotating shaft (181) and a gear (182) arranged on the rotating shaft (181), the rotating shaft (181) and the gear (182) being coaxially arranged and rotatably connected relative to the mounting cavity (3); The length of the rotating shaft (181) is adapted to the spacing distance between the boss portions (5) on both sides, so that when the speed reduction mechanism (18) is installed in the installation cavity (3), the two ends of the rotating shaft (181) can be embedded in the positioning grooves (61) on both sides in a one-to-one correspondence.

7. The gearbox according to claim 6, characterized in that: The rotating shaft (181) is provided with a bearing component (11), and the bearing component (11) is respectively sleeved on both ends of the rotating shaft (181), and the bearing component (11) is correspondingly installed in the positioning cavity (6) for positioning.

8. The gearbox according to claim 6, characterized in that: The frame portion (1) is provided with an axial hole, which includes an axial hole 1 (161) and an axial hole 2 (162); the boss portion (5) is provided with an inner hole 1 (17) at a position corresponding to the axial hole 1 (161); the inner hole 1 (17) on one side is correspondingly connected to the axial hole 1 (161); The gear box body (19) is also provided with a second inner hole (20) at a position corresponding to the second shaft hole (162).

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