Auxiliary tool for assembling planetary gear assembly

Abstract

The utility model relates to the technical field of machining auxiliary equipment, and discloses an auxiliary tool for assembling a planetary gear assembly, the auxiliary tool comprises a working platform, air cylinder equipment and an electric screw driver head, the air cylinder equipment is arranged on the working platform, and the electric screw driver head is vertically mounted at the bottom end of a piston rod of the air cylinder equipment; a fixing disc is arranged on the working platform and located below the electric screwdriver head, a rotary table used for containing a planetary gear assembly semi-finished product is coaxially and rotationally arranged on the fixing disc, an alignment assembly is arranged on the working platform and comprises a ratchet wheel disc and a pawl piece which are rotationally arranged on the fixing disc, and the pawl piece is matched with ratchets on the ratchet wheel disc in a clamped mode. The ratchet disc is coaxially and fixedly arranged at the bottom of the rotary table, and ratchets on the ratchet disc are in one-to-one correspondence with the connecting hole positions. The planetary gear assembly has the effect of improving the assembling efficiency of the planetary gear assembly.

Description

Technical Field

[0001] This application relates to the field of auxiliary processing equipment technology, and in particular to an auxiliary tooling for assembling planetary gear assemblies. Background Technology

[0002] Planetary gear assemblies are widely used in electric operating mechanisms due to their efficient power transmission characteristics and compact structure. Planetary gear assemblies can evenly transmit power from a central power source to each planetary pinion, effectively reducing excessive localized stress and saving space. This efficient power transmission method makes it an indispensable key component in electric operating mechanisms. However, with the continuous growth of application demands, higher requirements are being placed on the assembly efficiency and precision of planetary gear assemblies.

[0003] Reference Figure 1 and Figure 2 The planetary gear assembly semi-finished product 01 includes a planetary disk 011, a main shaft 012, planetary pinions 013, and a positioning cover ring 014. The main shaft 012 is coaxially inserted through the planetary disk 011 and welded to it. A support shaft 0111 is fixedly installed on one side wall of the planetary disk 011. Three support shafts 0111 are evenly distributed around the circumference of the main shaft 012, and each support shaft 0111 is parallel to the axial direction of the main shaft 012. The planetary pinions 013 correspond one-to-one with the support shafts 0111 and are rotatably sleeved on them. The positioning cover ring 014, with dimensions matching the planetary disk 011, covers multiple planetary pinions 013 and is connected and installed on the planetary disk 011 by bolts 0142. A mounting groove 0121 is recessed on the end of the main shaft 012 away from the positioning cover ring 014, and a positioning key 0122 is fixedly installed on the inner side wall of the mounting groove 0121. The positioning cover ring 014 has three pre-set connection holes 0141 for each bolt 0142. The three connection holes 0141 are evenly distributed around the circumference of the main shaft 012 and are staggered with the position of the support shaft 0111.

[0004] To ensure that each planetary pinion can rotate properly, the three bolts need to be rotated the same number of times to ensure that the positioning cover ring is parallel to the planetary disk, so as to apply the same constraint force to each planetary pinion.

[0005] In the existing planetary gear assembly process, the semi-finished planetary gear assembly is typically manually adjusted. It is placed on a work platform, and the connecting holes are aligned with the electric screwdriver head. The specific method involves using a cylinder to drive the electric screwdriver head down and insert it into the bolt end. After rotating for a certain period, the electric screwdriver head rises, completing the connection of one bolt. Then, the semi-finished planetary gear assembly is manually adjusted so that the next connecting hole is aligned with the electric screwdriver head. This process is repeated until all bolts are connected.

[0006] While the above methods can achieve planetary gear assembly to some extent, they have significant shortcomings in practical operation. Manually adjusting the semi-finished planetary gear assembly is cumbersome, requiring workers to maintain a high level of concentration to ensure precise alignment of the connecting holes with the electric screwdriver head. Prolonged work can easily lead to worker fatigue, which in turn affects the alignment accuracy of the connecting holes and the electric screwdriver head, ultimately reducing the overall efficiency of planetary gear assembly. Utility Model Content

[0007] To improve the efficiency of planetary gear assembly, this application provides an auxiliary tooling for planetary gear assembly.

[0008] The auxiliary tooling for assembling planetary gear assemblies provided in this application adopts the following technical solution:

[0009] An auxiliary tooling for assembling a planetary gear assembly includes a work platform, a cylinder device, and an electric screwdriver. The cylinder device is mounted on the work platform, and the electric screwdriver is vertically mounted on the bottom end of the piston rod of the cylinder device. A fixed plate is provided on the work platform below the electric screwdriver. A turntable for placing a semi-finished planetary gear assembly is coaxially rotatably mounted on the fixed plate. An alignment component is provided on the work platform. The alignment component includes a ratchet disc and a pawl rotatably mounted on the fixed plate. The pawl engages with the ratchet teeth on the ratchet disc. The ratchet disc is coaxially fixed at the bottom of the turntable, and the ratchet teeth on the ratchet disc correspond one-to-one with the connecting holes.

[0010] By adopting the above technical solution, the auxiliary tooling for assembling planetary gear assemblies improves the efficiency of planetary gear assembly. Specifically, by setting a fixed plate and a turntable on the work platform, the semi-finished planetary gear assembly can be stably placed on the turntable, avoiding the process of manually adjusting the semi-finished planetary gear assembly and reducing the mental fatigue of the workers. At the same time, by setting up alignment components, including a ratchet plate and a pawl, it is ensured that when the ratchet teeth on the ratchet plate and the pawl engage with each turntable rotation, the electric screwdriver head is precisely aligned with the connecting hole on the semi-finished planetary gear assembly, improving the assembly accuracy and work efficiency of the planetary gear assembly.

[0011] Optionally, the pawl includes a stop plate, a pawl tip disposed on the end of the stop plate near the ratchet wheel, and a torsion spring for driving the stop plate to reset. A rotating rod is rotatably disposed on the fixed plate. The end of the stop plate near the ratchet wheel is connected to the top wall of the movable end of the rotating rod. A fixed rod and a limiting rod are disposed on the fixed plate on the side of the rotating rod away from the ratchet wheel. The torsion spring is sleeved on the fixed rod, with the end of the torsion spring facing the pawl tip, and the end of the torsion spring abutting against the side wall of the rotating rod and the side wall of the limiting rod, respectively.

[0012] By adopting the above technical solution, the combined structure of the stop plate, pawl tip, and torsion spring ensures the stability and reliability of the pawl component. At the same time, the coordinated design of the rotating rod, fixing rod, and limiting rod further enhances the reset function of the pawl component, ensuring accurate positioning after each rotation. This allows the ratchet disc to stop accurately at a predetermined position each time it rotates, thereby ensuring that each connecting hole can be precisely aligned with the electric screwdriver head. This avoids errors and fatigue problems caused by manual adjustment, and improves the efficiency and accuracy of assembly work.

[0013] Optionally, a stop bar is provided on the fixed plate. The stop bar is located between the movable end of the rotating rod and the ratchet plate. When the torsion spring is in its natural state, the stop bar is in contact with the side wall of the movable end of the rotating rod.

[0014] By adopting the above technical solution, the stop bar ensures that the pawl remains stable when not subjected to external force, reducing the risk of increased pawl tip wear due to excessive contact between the pawl tip and the ratchet disc, and thus reducing the pawl tip's lifespan. Simultaneously, the contact design between the stop bar and the moving end of the rotating rod further ensures effective engagement between the pawl tip and the ratchet teeth, guaranteeing precise positioning of the turntable during each rotation, thereby improving the accuracy and efficiency of the planetary gear assembly.

[0015] Optionally, the pawl tip is plate-shaped, and a slot is provided on the end of the abutment. The pawl tip is inserted into the slot, and a connecting member is provided between the pawl tip, the abutment, and the rotating rod.

[0016] By adopting the above technical solution, the pawl tip is set in a plate shape and inserted into the slot of the backing plate, which makes the connection between the pawl tip and the backing plate more stable, and at the same time makes it easier to replace the damaged pawl tip, thus improving the convenience of maintenance.

[0017] Optionally, a lever is provided on the side wall of the abutment away from the rotating shaft.

[0018] By adopting the above technical solution, the design of the paddle allows the operator to manually adjust the position of the pawl by moving the paddle, thereby making it easier and faster to engage or disengage the pawl from the ratchet disc, improving the ease of operation and work efficiency of the alignment component.

[0019] Optionally, a positioning groove is provided at the axis of the turntable to be inserted and matched with the spindle, and a limit block is provided in the positioning groove to match the positioning key, with the side wall of the positioning key and the limit block being fitted together.

[0020] By adopting the above technical solution, the insertion and engagement of the positioning groove with the spindle, and the fitting arrangement between the positioning key and the limiting block, the semi-finished planetary gear assembly can be precisely positioned on the turntable, avoiding deviations caused by manual adjustment. At the same time, this design also ensures the consistency of the semi-finished planetary gear assembly position during each assembly, thereby improving the stability and reliability of the entire assembly process.

[0021] Optionally, the turntable is provided with a plurality of vertically arranged push rods on its side wall, and the end of each push rod is connected to the side wall of the turntable with an ear plate.

[0022] By adopting the above technical solution, the design of the push rod makes it easier for operators to adjust the position of the turntable, reducing the possibility of operators getting their fingers scratched by the metal barbs on the side wall of the turntable when manually rotating it, thus improving the safety of the planetary gear assembly process.

[0023] Optionally, each push rod is fitted with a rotatable rubber sleeve.

[0024] By adopting the above technical solution, the rubber sleeve on the push rod improves the operator's comfort when pushing the push rod, thereby further improving the operator's safety during the assembly of planetary gear components.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. This auxiliary tooling for planetary gear assembly improves the efficiency of planetary gear assembly. Specifically, by setting a fixed plate and a turntable on the work platform, the semi-finished planetary gear assembly can be stably placed on the turntable, avoiding the process of manually adjusting the semi-finished planetary gear assembly and reducing the mental fatigue of the workers. At the same time, by setting up alignment components, including a ratchet plate and a pawl, it is ensured that when the ratchet teeth on the ratchet plate and the pawl engage with each turntable rotation, the electric screwdriver head is precisely aligned with the connecting holes on the semi-finished planetary gear assembly, improving the assembly accuracy and work efficiency of the planetary gear assembly;

[0027] 2. The combined structure of the stop plate, pawl tip, and torsion spring ensures the stability and reliability of the pawl. At the same time, the coordinated design of the rotating rod, fixing rod, and limiting rod further enhances the reset function of the pawl, ensuring accurate positioning after each rotation. This allows the ratchet disc to stop accurately at a predetermined position each time it rotates, thereby ensuring that each connecting hole can be precisely aligned with the electric screwdriver head. This avoids errors and fatigue problems caused by manual adjustment, and improves the efficiency and accuracy of assembly work.

[0028] 3. The stop bar ensures the pawl remains stable when not subjected to external force, reducing the risk of increased pawl tip wear due to excessive contact between the pawl tip and the ratchet disc, thus shortening the pawl tip's lifespan. Simultaneously, the contact design between the stop bar and the moving end of the rotating rod further ensures effective engagement between the pawl tip and the ratchet teeth, guaranteeing precise positioning of the turntable during each rotation, thereby improving the accuracy and efficiency of the planetary gear assembly. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the semi-finished planetary gear assembly.

[0030] Figure 2 This is a schematic diagram showing the positional relationship between the locating key and the planetary disk in a semi-finished planetary gear assembly.

[0031] Figure 3 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0032] Figure 4 This is a cross-sectional view illustrating the connection relationship between the positioning key and the limiting block in Embodiment 1 of this application.

[0033] Figure 5 This is a schematic diagram illustrating the connection relationship between the pawl tip, the stop plate, and the rotating rod in Embodiment 1 of this application.

[0034] Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0035] Figure 7 This is a cross-sectional view illustrating the connection between the push rod and the turntable in Embodiment 2 of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 01. Planetary gear assembly semi-finished product; 011. Planetary disk; 0111. Support shaft; 012. Main shaft; 0121. Mounting slot; 0122. Positioning key; 013. Planetary pinion; 014. Positioning cover ring; 0141. Connecting hole; 0142. Bolt; 1. Work platform; 11. Support frame; 2. Cylinder device; 3. Electric screwdriver head; 4. Fixed disk; 41. Rotating rod; 42. Fixed rod; 43. Limiting rod; 44. Stopping rod; 5. Turntable; 51. Positioning slot; 511. Limiting block; 6. Alignment assembly; 61. Ratchet disk; 62. Pawl; 621. Support plate; 6211. Paddle; 6212. Slot; 622. Pawl tip; 623. Torsion spring; 7. Connector; 8. Push rod; 81. Rubber sleeve; 9. Ear plate. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 3-7 This application will be described in further detail.

[0039] This application discloses an auxiliary tooling for assembling planetary gear assemblies.

[0040] Example 1

[0041] Reference Figure 3 An auxiliary tooling for assembling planetary gear components includes a work platform 1, a cylinder device 2, and an electric screwdriver head 3. A support frame 11 is fixedly mounted on the work platform 1, the cylinder device 2 is mounted at the bottom of the support frame 11, and the electric screwdriver head 3 is vertically mounted at the bottom end of the piston rod of the cylinder device 2. A fixed plate 4 is fixedly mounted on the work platform 1, located below the electric screwdriver head 3. A turntable 5 is coaxially rotatably mounted on the fixed plate 4, and an alignment component 6 is provided on the work platform 1.

[0042] Reference Figure 3 During the assembly of the planetary gear assembly using this auxiliary tooling, the semi-finished planetary gear assembly 01 is first placed on the turntable 5. Then, under the constraint of the alignment component 6, the turntable 5 rotates a certain angle, aligning the first connecting hole 0141 with the electric screwdriver head 3. Next, the cylinder device 2 is activated, causing the electric screwdriver head 3 to descend and engage with the end of the first bolt 0142. After rotating for a predetermined time, the electric screwdriver head 3 rises, completing the connection of the first bolt 0142. The turntable 5 is then rotated further to align the next connecting hole 0141 with the electric screwdriver head 3. This process is repeated until all bolts 0142 are connected.

[0043] Reference Figure 4 The turntable 5 has a positioning groove 51 at its axis that is inserted into the spindle 012. A limit block 511 is fixedly installed in the positioning groove 51 in conjunction with the positioning key 0122. When the spindle 012 is inserted into the positioning groove 51, the side wall of the positioning key 0122 is fitted against the limit block 511.

[0044] Reference Figure 3 The alignment component 6 includes a ratchet disc 61 and a pawl 62. The ratchet disc 61 is coaxially fixed at the bottom of the turntable 5 and rotates with the fixed disc 4. Among the multiple ratchet teeth integrally formed on the outer edge of the ratchet disc 61, each ratchet tooth corresponds to a connection hole 0141 on the planetary gear assembly semi-finished product 01.

[0045] Reference Figure 3 and Figure 5The pawl component 62 includes a stop plate 621, a pawl tip 622, and a torsion spring 623. The stop plate 621 is rotatably mounted on the fixed disk 4 via a rotating rod 41. A paddle 6211 is fixedly mounted on the side wall of the stop plate 621 opposite to the rotating shaft of the rotating rod 41. The movable end of the rotating rod 41 is connected to the end of the stop plate 621 near the ratchet disk 61. A slot 6212 is formed at the end of the stop plate 621. The pawl tip 622 is plate-shaped and is embedded in the slot 6212 of the stop plate 621. A connecting member 7 passes through the pawl tip 622, the stop plate 621, and the rotating rod 41. In this embodiment, the connecting member 7 consists of two fixing screws, which together fix the pawl tip 622, the stop plate 621, and the rotating rod 41. The tip of the pawl tip 622 engages with the ratchet teeth on the ratchet disk 61.

[0046] Reference Figure 5 A fixed rod 42 and a limiting rod 43 are fixedly installed on the fixed plate 4 on the side of the rotating rod 41 away from the ratchet plate 61. A torsion spring 623 is sleeved on the fixed rod 42, and its two ends abut against the side wall of the rotating rod 41 and the side wall of the limiting rod 43 respectively, so as to play a resetting role.

[0047] Reference Figure 3 and Figure 5 A stop rod 44 is fixedly installed on the fixed plate 4, and the stop rod 44 is located between the movable end of the rotating rod 41 and the ratchet plate 61. When the torsion spring 623 is in its natural state, the stop rod 44 abuts against the side wall of the movable end of the rotating rod 41 to prevent the rotating rod 41 from rotating excessively.

[0048] The implementation principle of an auxiliary tooling for assembling a planetary gear assembly according to an embodiment of this application is as follows: When assembling a planetary gear assembly using this auxiliary tooling, the semi-finished planetary gear assembly 01 is first placed on the turntable 5. The positioning groove 51 and the limiting block 511 work together to ensure accurate insertion of the spindle 012. After manually rotating the turntable 5 to a certain angle, the pawl tip 622, under the force of the torsion spring 623, engages with the ratchet teeth of the ratchet disc 61. At this time, the first connecting hole 0141 aligns with the electric screwdriver head 3. Then, the cylinder device 2 is activated, causing the electric screwdriver head 3 to descend and engage with the end of the first bolt 0142. After rotating for a predetermined time, the electric screwdriver head 3 rises, completing the connection of the first bolt 0142.

[0049] Next, continue rotating the turntable 5 until the pawl tip 622 engages with the next ratchet tooth, at which point the next connection hole 0141 aligns with the electric screwdriver head 3. Repeat the above operation until all bolts 0142 are connected. Throughout the process, there is no need to frequently manually adjust the position of the planetary gear assembly semi-finished product 01, improving assembly efficiency and accuracy.

[0050] Example 2

[0051] Reference Figure 6 and Figure 7 The difference between this embodiment and embodiment 1 is that multiple vertically arranged push rods 8 are provided on the side wall of the turntable 5. This embodiment takes four push rods 8 as an example. Each push rod 8 is rotatably fitted with a rubber sleeve 81, and the end of each push rod 8 is fixedly provided with an ear plate 9 between it and the side wall of the turntable 5.

[0052] The implementation principle of Example 2 is as follows: the push rod 8 with rubber sleeve 81 improves the safety of the operator during the assembly of planetary gear assembly.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An auxiliary tooling for assembling a planetary gear assembly, comprising a work platform (1), a cylinder device (2), and an electric screwdriver (3), wherein the cylinder device (2) is mounted on the work platform (1), and the electric screwdriver (3) is vertically mounted on the bottom end of the piston rod of the cylinder device (2), characterized in that... A fixed plate (4) is provided on the working platform (1) below the electric screwdriver head (3). A turntable (5) for placing the planetary gear assembly semi-finished product (01) is coaxially rotatably provided on the fixed plate (4). An alignment component (6) is provided on the working platform (1). The alignment component (6) includes a ratchet disc (61) and a pawl (62) rotatably provided on the fixed plate (4). The pawl (62) engages with the ratchet teeth on the ratchet disc (61). The ratchet disc (61) is coaxially fixedly provided at the bottom of the turntable (5), and the ratchet teeth on the ratchet disc (61) correspond one-to-one with the connecting hole (0141).

2. The auxiliary tooling for assembling a planetary gear assembly according to claim 1, characterized in that... The pawl component (62) includes a stop plate (621), a pawl tip (622) disposed on the end of the stop plate (621) near the ratchet disc (61), and a torsion spring (623) for driving the stop plate (621) to reset. A rotating rod (41) is rotatably disposed on the fixed plate (4). The end of the stop plate (621) near the ratchet disc (61) is connected to the top wall of the movable end of the rotating rod (41). A fixed rod (42) and a limiting rod (43) are disposed on the side of the rotating rod (41) away from the ratchet disc (61). The torsion spring (623) is sleeved on the fixed rod (42). The end of the torsion spring (623) faces the pawl tip (622), and the end of the torsion spring (623) abuts against the side wall of the rotating rod (41) and the side wall of the limiting rod (43) respectively.

3. The auxiliary tooling for assembling a planetary gear assembly according to claim 2, characterized in that... A stop rod (44) is provided on the fixed plate (4). The stop rod (44) is located between the movable end of the rotating rod (41) and the ratchet plate (61). When the torsion spring (623) is in its natural state, the stop rod (44) is in contact with the side wall of the movable end of the rotating rod (41).

4. The auxiliary tooling for assembling a planetary gear assembly according to claim 2, characterized in that... The pawl tip (622) is plate-shaped, and a slot (6212) is provided on the end of the abutment plate (621). The pawl tip (622) is inserted into the slot (6212). A connector (7) is provided between the pawl tip (622), the abutment plate (621) and the rotating rod (41).

5. The auxiliary tooling for assembling a planetary gear assembly according to claim 2, characterized in that... A paddle (6211) is provided on the side wall of the abutment (621) away from the rotating shaft of the rotating rod (41).

6. The auxiliary tooling for assembling a planetary gear assembly according to claim 1, characterized in that... The turntable (5) has a positioning groove (51) at its axis that is inserted into the spindle (012). A limit block (511) is provided in the positioning groove (51) in conjunction with the positioning key (0122). The side wall of the positioning key (0122) is fitted to the limit block (511).

7. The auxiliary tooling for assembling a planetary gear assembly according to claim 1, characterized in that... The turntable (5) has a plurality of vertically arranged push rods (8) on its side wall, and the end of each push rod (8) is connected to the side wall of the turntable (5) by an ear plate (9).

8. The auxiliary tooling for assembling a planetary gear assembly according to claim 7, characterized in that... Each push rod (8) is fitted with a rubber sleeve (81) that rotates around it.

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