A quick switching device for forward and reverse rotation of an output shaft

Abstract

The utility model provides a kind of output shaft positive and negative rotation quick switching device, including shell, power transmission assembly and power output assembly.Power transmission assembly is equipped with first sprocket set and first gear, and power output assembly is correspondingly equipped with second sprocket set and second gear, and the transmission chain is connected between the two.Power output assembly is equipped with clutch between second sprocket set and second gear, clutch connects switching assembly, and can be switched between first state and second state.When switching assembly is in first state, clutch is connected with second sprocket set, so that power transmission assembly and power output assembly rotate in the same direction;When switching assembly is in second state, clutch is connected with second gear, so that the two rotate towards each other.The utility model is compact in structure, easy to operate, can realize the quick, stable switching of output shaft positive and negative rotation, applicable to cold bending forming equipment that can be interchanged with CZ, effectively improve processing efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to a device for rapid switching of forward and reverse rotation of the output shaft. Background Technology

[0002] CZ-shaped steel forming equipment is a specialized sheet metal cold bending forming machine, mainly used for multiple precise bending of the edges of metal sheets to produce traditional CZ-shaped purlin materials. Existing CZ-shaped steel forming equipment requires a drive mechanism to perform precise and rapid forward and reverse rotation switching when bending Z-shaped or C-shaped edges to complete the bending process in different directions. The response speed, stability, and reliability of the drive mechanism's output shaft in forward and reverse rotation directly determine the machine's working efficiency, processing accuracy, and product quality.

[0003] Currently, the main technical solution for achieving forward and reverse rotation of the output shaft is to drive it with two independent motors and control its start and stop via circuitry to achieve rotation switching. This method is complex in structure, expensive, requires a large space to install two motors, and requires pausing the machine during the switching process, resulting in a certain delay and making it difficult to achieve rapid switching. Utility Model Content

[0004] This invention provides a device for quickly switching the forward and reverse rotation of the output shaft, which can effectively solve the above-mentioned problems.

[0005] This utility model is implemented as follows: This utility model provides a device for quickly switching the forward and reverse rotation of the output shaft, comprising: The system includes a housing, within which a power transmission assembly and a power output assembly are disposed. The power transmission assembly has a first sprocket set and a first gear spaced apart. The power output assembly has a second sprocket set and a second gear corresponding to the first sprocket set and the first gear, and a transmission chain connects the first sprocket set and the second sprocket set. The power output assembly has a clutch between the second sprocket set and the second gear, and the clutch is connected to a switching assembly. The switching assembly is operable between a first state and a second state. When the switching assembly is in the first state, the clutch is connected to the second sprocket set and disengaged from the second gear, causing the power transmission assembly and the power output assembly to rotate in the same direction. When the switching assembly is in the second state, the clutch is disengaged from the second sprocket set and connected to the second gear, causing the power transmission assembly and the power output assembly to rotate in opposite directions.

[0006] As a further improvement, the housing includes a box body and a box cover. The box body has through holes on its opposite side walls for placing the power transmission component and the power output component. The box cover is connected to the upper end of the box body and has a through groove at the position corresponding to the switching component.

[0007] As a further improvement, the power transmission assembly also includes a drive shaft, on which the first sprocket set and the first gear pass. The drive shaft has a first end cap on the side wall of the housing near the first sprocket set, and a second end cap on the side wall of the housing near the first gear.

[0008] As a further improvement, the power output assembly also includes an output shaft, on which the second sprocket set and the second gear pass. The output shaft has a third end cap on the side wall of the housing near the second sprocket set, and a fourth end cap on the side wall of the housing near the second gear.

[0009] As a further improvement, the outer wall of the clutch is also fitted with a clutch bearing housing, and the output shaft is provided with a transmission sprocket at the extension near the fourth end cover.

[0010] As a further improvement, the switching assembly includes a switching handle and a fixing block. The switching handle is fixedly connected to the clutch bearing seat, and the fixing block is fixedly disposed on both sides of the through groove. The fixing block is rotatably connected to the switching handle via a pin.

[0011] The beneficial effects of this utility model are: This invention employs a single-motor drive system, with a combination transmission method that connects to a second sprocket set or a second gear via a clutch, replacing the traditional dual-motor drive scheme. This significantly simplifies the overall structure and reduces manufacturing costs and space requirements. Utilizing the mechanical linkage between the clutch and the switching assembly, it enables rapid switching between forward and reverse rotation of the output shaft without requiring machine downtime, effectively improving equipment response speed and production efficiency. The switching assembly features a handle-style design, making operation intuitive and convenient. It can be widely applied to sheet metal processing equipment requiring frequent forward and reverse rotation, such as door frame bending machines, enhancing the overall automation level and processing quality. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is an exploded view of the overall structure of the output shaft forward / reverse rapid switching device of this utility model. Figure 1 .

[0014] Figure 2This is an exploded view of the overall structure of the output shaft forward / reverse rapid switching device of this utility model. Figure 2 .

[0015] Figure 3 This is a schematic diagram of the overall structure of a device for rapidly switching forward and reverse rotation of the output shaft according to this utility model.

[0016] Figure 4 This is a schematic diagram of the internal structure of a device for rapidly switching the forward and reverse rotation of the output shaft according to this utility model.

[0017] Figure 5 This is a top view schematic diagram of the internal structure of a rapid forward / reverse switching device for the output shaft according to this utility model.

[0018] Figure 6 This is a schematic diagram of the power output component of a rapid forward / reverse switching device for the output shaft according to this utility model.

[0019] In the diagram: 1-House, 11-Box, 12-Box cover, 2-Power transmission assembly, 21-Drive shaft, 22-First sprocket set, 23-First gear, 24-First end cover, 25-Second end cover, 3-Power output assembly, 31-Output shaft, 32-Second sprocket set, 33-Clutch, 34-Clutch bearing seat, 35-Second gear, 36-Third end cover, 37-Fourth end cover, 38-Drive sprocket, 4-Drive chain, 5-Switching assembly, 51-Switching handle, 52-Fixing block. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] Reference Figure 1-6 As shown, a rapid forward / reverse switching device for an output shaft includes: a housing 1, a power transmission assembly 2 and a power output assembly 3 disposed within the housing 1; The power transmission component 2 is provided with a first sprocket set 22 and a first gear 23 spaced apart. The power output component 3 is provided with a second sprocket set 32 ​​and a second gear 35 at the corresponding positions of the first sprocket set 22 and the first gear 23. A transmission chain 4 connects the first sprocket set 22 and the second sprocket set 32. The power output component 3 is provided with a clutch 33 between the second sprocket set 32 ​​and the second gear 35. The clutch 33 is connected to a switching component 5, which can operate between a first state and a second state. When the switching component 5 is in the first state, the clutch 33 is connected to the second sprocket set 32 ​​and disengaged from the second gear 35, so that the power transmission component 2 and the power output component 3 rotate in the same direction. When the switching component 5 is in the second state, the clutch 33 is disengaged from the second sprocket set 32 ​​and connected to the second gear 35, so that the power transmission component 2 and the power output component 3 rotate in opposite directions. By using a combination transmission method in which the clutch 33 is connected to either the second sprocket set 32 ​​or the second gear 35, the traditional dual-motor drive scheme is replaced, which significantly simplifies the overall structure and reduces manufacturing costs and space occupation.

[0023] Furthermore, the housing 1 is composed of a box body 11 and a box cover 12. The box body 11 has two sets of through holes on its opposite side walls for installing the power transmission component 2 and the power output component 3. The box cover 12 is bolted to the upper opening of the box body 11. The box cover 12 has through slots corresponding to the position of the switching component 5 to facilitate the installation of the switching component 5.

[0024] Furthermore, the power transmission assembly 2 includes a drive shaft 21, a first sprocket set 22, and a first gear 23. The drive shaft 21 passes through a corresponding set of through holes in the housing 11. The first sprocket set 22 and the first gear 23 are sequentially and spaced apart and fixed to the drive shaft 21. A first end cap 24 is connected to the outside of the housing 11 near the first sprocket set 22. A second end cap 25 is connected to the outside of the housing 11 near the first gear 23. The first end cap 24 and the second end cap 25 are used to seal and fix the drive shaft 21. The drive shaft 21 can be connected to an external power source at the outer extension of the first end cap 24 via a coupling, providing continuous unidirectional rotational input power to the drive shaft 21.

[0025] Furthermore, the power output assembly 3 includes an output shaft 31, a second sprocket set 32, a second gear 35, a clutch 33, and a clutch bearing seat 34. The output shaft 31 passes through another set of through holes in the housing 11. The second sprocket set 32 ​​and the second gear 35 are sleeved on the output shaft 31 and can rotate freely relative to the output shaft 31. The clutch 33 is located between the second sprocket set 32 ​​and the second gear 35, and the clutch 33 has teeth on both sides. Correspondingly, the second sprocket set 32 ​​and the second gear 35 have connecting teeth that match the teeth on the side near the clutch 33. The clutch 33 is connected to the output shaft 31 through a spline or flat key, so that the clutch 33 can slide along the axial direction of the output shaft 31 and rotate together with the output shaft 31. The clutch bearing seat 34 is sleeved on the outside of the clutch 33. The clutch bearing seat 34 is used to connect with the shift fork of the switching handle 51. By moving the switching handle 51, the clutch 33 is moved. The output shaft 31 has a third end cover 36 connected to the outside of the housing 11 on the side near the second sprocket set 32. The output shaft 31 has a fourth end cover 37 connected to the outside of the housing 11 on the side near the second gear 35. A transmission sprocket 38 is also fixed on the extension of the output shaft 31 on the side near the fourth end cover 37. The transmission sprocket 38 is used to output power to the external actuator through a chain.

[0026] Furthermore, the first sprocket set 22 and the second sprocket set 32 ​​are connected by a transmission chain 4 to form a chain drive system. The switching component 5 includes a switching handle 51 and a fixing block 52. The fixing blocks 52 are fixedly installed in pairs on both sides of the through groove of the cover 12. The switching handle 51 includes a shift fork and a handle body. The shift fork is fixedly connected to the clutch bearing seat 34, and the handle body is rotatably connected to the fixing block 52 through a pin. By moving the switching handle 51, the clutch bearing seat 34 and the clutch 33 can be moved axially along the output shaft 31, thereby realizing the switching of states, that is, switching between the engagement of the clutch 33 and the second sprocket set 22 or the engagement of the clutch 33 and the second gear 35, thereby changing the rotation direction of the power output component 3, and thus realizing the switching of forward and reverse rotation of the equipment to meet the operating requirements of the equipment under different working conditions.

[0027] Further, the specific embodiments of this utility model are as follows: When the power output assembly 3 and the power transmission assembly 2 need to rotate in the same direction, the operator moves the switching handle 51 to the first position. At this time, the switching handle 51 pushes the clutch 33 axially through the clutch bearing seat 34, causing the teeth on the clutch 33 to mesh with the connecting teeth of the second sprocket set 32, while the clutch 33 disengages from the second gear 35. The power transmission path is as follows: the drive shaft 21 drives the first sprocket set 22 to rotate, the first sprocket set 22 drives the drive chain 4 to rotate, the drive chain 4 drives the second sprocket set 32 ​​to rotate, and the clutch 33 drives the output shaft 31 to rotate. In this transmission path, the rotation direction of the output shaft 31 is the same as the rotation direction of the drive shaft 21.

[0028] When the power output component 3 and the power transmission component 2 need to rotate in opposite directions, the operator moves the switching handle 51 to the second state. At this time, the switching handle 51 pushes the clutch 33 axially through the clutch bearing seat 34, causing the teeth on the clutch 33 to mesh with the connecting teeth on the second gear 35, while the clutch 33 disengages from the second sprocket set 32. The power transmission path then becomes: the transmission shaft 21 drives the first gear 23 to rotate, the second gear 35 drives the clutch 33 to rotate, and in turn drives the output shaft 31 to rotate. Since the first gear 23 and the second gear 35 are externally meshed, their transmission direction is changed during the transmission process. Therefore, the rotation direction of the output shaft 31 is opposite to the transmission direction of the transmission shaft 21. Through the above-mentioned mechanical switching mechanism, the forward and reverse switching of the output shaft can be quickly and reliably achieved by operating only one handle, without changing the direction of the motor or stopping the machine, which greatly improves the working efficiency and automation level of the equipment.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for rapidly switching the forward and reverse rotation of an output shaft, characterized in that, include: The housing (1) is provided with a power transmission assembly (2) and a power output assembly (3). The power transmission assembly (2) is provided with a first sprocket set (22) and a first gear (23) at intervals; the power output assembly (3) is provided with a second sprocket set (32) and a second gear (35) at the corresponding positions of the first sprocket set (22) and the first gear (23), and a transmission chain (4) is connected between the first sprocket set (22) and the second sprocket set (32). The power output assembly (3) has a clutch (33) between the second sprocket set (32) and the second gear (35). The clutch (33) is connected to a switching assembly (5). The switching assembly (5) can operate between a first state and a second state. When the switching assembly (5) is in the first state, the clutch (33) is connected to the second sprocket set (32) and disengaged from the second gear (35), so that the power transmission assembly (2) and the power output assembly (3) rotate in the same direction. When the switching assembly (5) is in the second state, the clutch (33) is disengaged from the second sprocket set (32) and connected to the second gear (35), so that the power transmission assembly (2) and the power output assembly (3) rotate in opposite directions.

2. The output shaft forward / reverse rapid switching device according to claim 1, characterized in that, The housing (1) includes a box body (11) and a box cover (12). The box body (11) has through holes on its opposite side walls for placing the power transmission assembly (2) and the power output assembly (3). The box cover (12) is connected to the upper end of the box body (11). The box cover (12) has a through groove at the position corresponding to the switching assembly (5).

3. The output shaft forward / reverse rapid switching device according to claim 2, characterized in that, The power transmission assembly (2) further includes a drive shaft (21), the first sprocket set (22) and the first gear (23) are mounted on the drive shaft (21), and the drive shaft (21) is provided with a first end cap (24) on the side wall of the housing (11) near the first sprocket set (22); the drive shaft (21) is provided with a second end cap (25) on the side wall of the housing (11) near the first gear (23).

4. The output shaft forward / reverse rapid switching device according to claim 2, characterized in that, The power output assembly (3) further includes an output shaft (31), the second sprocket set (32) and the second gear (35) are mounted on the output shaft (31), and the output shaft (31) is provided with a third end cap (36) on the side wall of the housing (11) near the second sprocket set (32); the output shaft (31) is provided with a fourth end cap (37) on the side wall of the housing (11) near the second gear (35).

5. The output shaft forward / reverse rapid switching device according to claim 4, characterized in that, The outer wall of the clutch (33) is also fitted with a clutch bearing seat (34), and the output shaft (31) is provided with a transmission sprocket (38) at the extension near the fourth end cover (37).

6. The output shaft forward / reverse rapid switching device according to claim 5, characterized in that, The switching assembly (5) includes a switching handle (51) and a fixing block (52). The switching handle (51) is fixedly connected to the clutch bearing seat (34), and the fixing block (52) is fixedly disposed on both sides of the through groove. The fixing block (52) is rotatably connected to the switching handle (51) through a pin.

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