Rotating wheel mounting structure of actuator

Abstract

The utility model discloses a rotating wheel mounting structure of an actuator. The rotating wheel mounting structure comprises a bottom plate, the main shaft is rotatably arranged on the bottom plate; the rotating wheel assembly is arranged on the main shaft in a sleeving manner and synchronously rotates along with the main shaft; the device is characterized in that the device further comprises a supporting seat which is arranged on the bottom plate and arranged outside the main shaft in a sleeving mode, the supporting seat comprises a supporting seat fixing part, the supporting seat fixing part is fixed to the bottom plate, the supporting seat fixing part continues to vertically extend away from the bottom plate to form a supporting seat connecting part, and the supporting seat connecting part continues to transversely extend to form a supporting seat supporting part; and the supporting seat supporting part is supported on the lower surface of the rotating wheel assembly. When the rotating wheel assembly is supported by a stable surface, possible up-down swinging of the rotating wheel assembly is eliminated by the supporting seat, so that shaking of the main shaft is reversely restrained, stability of the actuator adopting the rotating wheel assembly in the operation process is ensured, the overall performance is improved, and meanwhile the rotating wheel assembly has the remarkable advantages of being small in occupied space and simple in structure.

Description

Technical Field

[0001] The utility model relates to a smoke exhaust valve actuator, and particularly to a runner mounting structure of an actuator. Background Art

[0002] The existing smoke exhaust valve actuator includes a housing, a swing rod, a swing frame and a runner. The runner includes a main shaft and a ratchet wheel, and a steel wire rope is wound around the main shaft. The swing frame has a pawl, and the swing frame shaft torsion spring controls the pawl to disengage from the ratchet wheel. An electromagnet is arranged on the bottom plate of the housing. When powered off, the core shaft of the electromagnet extends out, the tail end of the swing rod catches the swing frame, the pawl and the ratchet wheel are unidirectionally engaged, and by rotating the runner counterclockwise with a wrench, the steel wire rope is tensioned, and the door shaft torsion spring of the smoke exhaust valve stores energy, and the smoke exhaust valve is closed; in case of a fire, the electromagnet is powered on, the core shaft retracts, the swing rod disengages from the swing frame, the swing frame shaft torsion spring makes the swing frame swing away from the ratchet wheel, the pawl disengages from the ratchet wheel, the runner rotates forward to relax the steel wire rope, and the door shaft torsion spring releases energy, and the smoke exhaust valve opens.

[0003] In the above process, it is necessary to avoid the phenomenon of the main shaft shaking, because it may cause the ratchet wheel and the pawl to be disengaged and slip. The structure disclosed in the Chinese utility model patent "A Smoke Exhaust Valve Remote Actuator" with the application number 201920437617.8 sets a steel wire rope disc fixing bracket above the mouth of the ratchet wheel disc. The steel wire rope disc fixing bracket is an L-shaped fixing plate with a concave part facing the ratchet wheel disc. The steel wire fixing bracket is fixed on the mouth of the ratchet wheel disc, and an assembly hole for the rotation shaft (equivalent to the main shaft) to pass through is opened on the steel wire fixing bracket, so that the mouth of the ratchet wheel disc forms a semi-closed structure, so that a limiting space for limiting the steel wire rope disc is formed between the steel wire fixing bracket and the ratchet wheel disc. Among them, the assembly hole of the steel wire fixing bracket is designed to only allow the rotation shaft to pass through, and the clearance does not exceed the component tolerance, so that the upper end of the rotation shaft can be fixed in all directions on the same horizontal plane. Coupled with the lower end of the rotation shaft being riveted and fixed on the bottom plate, it is ensured that the rotation shaft is firmly fixed in the three-dimensional space of the mechanism.

[0004] However, because the steel wire rope disc fixing bracket is large in volume and occupies too much space inside the smoke exhaust valve actuator, it has become an urgent problem to optimize the design of the runner mounting structure and reduce the space occupation and cost of its functional structure for fixing the main shaft. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a runner mounting structure of an actuator with small space occupation and low material cost in view of the above technical status.

[0006] The technical solution adopted by the utility model to solve the above technical problem is: a runner mounting structure of an actuator, including

[0007] A bottom plate;

[0008] A main shaft rotatably arranged on the bottom plate;

[0009] The runner assembly is sleeved on the main shaft and rotates synchronously with the main shaft;

[0010] It is characterized in that it further includes

[0011] The support base is arranged on the bottom plate and sleeved outside the main shaft. It includes a support base fixing part which is fixed to the bottom plate. The support base fixing part extends vertically away from the bottom plate to form a support base connecting part, and the support base connecting part further extends horizontally to form a support base supporting part. The support base supporting part supports the lower surface of the runner assembly.

[0012] The support base connecting part can extend horizontally outwards or horizontally inwards. However, the former structure requires greater strength of the material. Therefore, preferably, the support base supporting part is annular, so as to provide a more uniform supporting force for the runner assembly.

[0013] Further, the support base is provided with an annular hole, and the support base is sleeved outside the main shaft through the annular hole. The inner diameter of the annular hole is slightly larger than the outer diameter of the main shaft at this height. By restricting the inner diameter of the annular hole, the annular hole can just allow the main shaft to pass through smoothly, further restricting the sway of the main shaft.

[0014] Specifically, the support base fixing part is annular, and at least two first mounting holes are provided on the support base fixing part. The bottom plate is provided with second mounting holes corresponding to the first mounting holes, and fixing parts pass through the first mounting holes and the second mounting holes to fixedly install the support base and the bottom plate.

[0015] Specifically, the runner assembly includes a ratchet wheel which is sleeved on the main shaft and fixed to the main shaft, and the support base supporting part supports the lower surface of the ratchet wheel.

[0016] Further, the runner assembly further includes a limit box for restricting the steel wire rope. The middle part of the limit box is provided with an opening and sleeved on the main shaft, and an inlet hole for the steel wire rope to enter is provided on the side surface of the limit box.

[0017] Further, at least two elastic buckles extend from the limit box, and corresponding buckles are provided on the bottom plate. The elastic buckles pass through the buckles and then buckle the bottom plate in reverse, so as to fix the limit box and the bottom plate.

[0018] Further, the limit box includes a box cover and a box body, and the box cover is buckled above the box body.

[0019] Preferably, the runner assembly further includes a runner plate sleeved on the main shaft. The middle part of the runner plate is concave, so that the runner plate includes a runner plate outer ring part, a runner plate sinking part and a runner plate connecting part connecting the two. The runner plate sinking part is fixed to the ratchet wheel, and the limit box is sleeved outside the runner plate connecting part, and the limit box is located between the runner plate outer ring part and the ratchet wheel.

[0020] Preferably, the base plate is provided with a spindle hole, the outer diameter of the lower part of the spindle is reduced to form a step surface, the part of the spindle below the step surface passes through the spindle hole, the step surface is abutted against the upper surface of the base plate, and a retaining ring is provided on the part of the spindle located below the base plate, which is abutted against the lower surface of the base plate.

[0021] Compared to the prior art, the present invention innovatively designs a support base for the wheel mounting structure. The support base has a support base support portion that is elevated relative to the base plate. The support base support portion provides surface support for the wheel assembly from below while also restricting the wheel assembly. Since the wheel assembly is tightly fitted onto the main shaft, the restriction on the former naturally extends to the latter. Specifically, when the wheel assembly obtains stable surface support, its possible up and down swinging is eliminated by the support base. This effect in turn suppresses the shaking of the main shaft, ensuring the stability of the actuator using the present invention during operation, improving overall performance, and having the significant advantages of small space occupation and simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of an embodiment of the present invention when it is disposed in an actuator;

[0023] Figure 2 This is a schematic structural diagram of an embodiment of the present utility model;

[0024] Figure 3 This is a three-dimensional exploded view of an embodiment of the present utility model;

[0025] Figure 4 It is a cross-sectional view of an embodiment of the present utility model. DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 4 The figure shows a preferred embodiment of the rotary wheel mounting structure of an actuator of the present invention. The actuator includes a swing rod 6, a swing frame 5 and the rotary wheel mounting structure of this embodiment. Please refer to Figure 1, the runner mounting structure of this embodiment includes a main shaft 3 and a ratchet wheel 21, and the end of the steel wire rope 8 is fixed and wound around the main shaft 3. The swing frame 5 has a ratchet pawl 51, and the swing frame shaft torsion spring makes the swing frame 5 always tend to swing in the direction away from the ratchet wheel 21 by the ratchet pawl 51. The actuator is also provided with an electromagnet 7. When the electromagnet 7 is powered off, the mandrel of the electromagnet 7 extends out, the tail end of the swing rod 6 catches the swing frame 5, the ratchet pawl 51 is engaged with the ratchet wheel 21 unidirectionally, and by rotating the main shaft 3 counterclockwise with a wrench, the steel wire rope 8 is tensioned, and the door shaft torsion spring of the smoke exhaust valve stores energy, and the smoke exhaust valve is closed; in case of a fire, the electromagnet 7 is powered on, the mandrel retracts, the swing rod 6 is disengaged from the swing frame 5, the swing frame shaft torsion spring makes the swing frame 5 swing away from the ratchet wheel 21, the ratchet pawl 51 is disengaged from the ratchet wheel 21, the main shaft 3 rotates forward to relax the steel wire rope 8, and the door shaft torsion spring releases energy, and the smoke exhaust valve opens.

[0028] In addition to the above-mentioned main shaft 3 and ratchet wheel 21, the runner mounting structure of this embodiment further includes main structures such as a bottom plate 1, a support seat 4, a limit box 22, and a runner plate 23.

[0029] The main shaft 3 is rotatably arranged on the bottom plate 1. For details, please refer to Figure 4 , a main shaft hole 11 is formed in the bottom plate 1. The outer diameter of the lower part of the main shaft 3 is reduced to form a step surface 31. The part of the main shaft 3 below the step surface 31 passes through the main shaft hole 11 from top to bottom. The step surface 31 abuts against the upper surface of the bottom plate 1. A retaining ring 32 is arranged on the part of the main shaft 3 below the bottom plate 1. The retaining ring 32 abuts against the lower surface of the bottom plate 1. The main shaft 3 cannot be disengaged from the bottom plate 1 without removing the retaining ring 32. The outer diameter of the part of the main shaft 3 in the main shaft hole 11 of the bottom plate 1 is slightly smaller than the inner diameter of the main shaft hole 11, so that the main shaft hole 11 does not limit the rotation of the main shaft 3 and the gap between the two is not too large.

[0030] The ratchet wheel 21, the limit box 22, and the runner plate 23 together form a runner assembly 2, as shown in Figure 3As shown in the figure, the runner assembly 2 is sleeved on the main shaft 3, where the ratchet wheel 21 is welded to the main shaft 3, the runner plate 23 is threadedly connected to the ratchet wheel 21, and the limit box 22 is clamped between the ratchet wheel 21 and the runner plate 23, enabling the runner assembly 2 to rotate synchronously with the main shaft 3. The limit box 22 for restricting the wire rope 8 is provided on the ratchet wheel 21. The middle part of it has an opening and is sleeved outside the main shaft 3, and there is a wire rope inlet hole 224 on the side for the wire rope 8 to enter. The limit box 22 extends two elastic buckles 223, and the bottom plate 1 is provided with corresponding bayonets 13. After the elastic buckles 223 pass through the bayonets 13, they are buckled on the bottom plate 1 in an inverted manner, so that the limit box 22 is fixed to the bottom plate 1. The limit box 22 includes a box cover 221 and a box body 222. The box cover 221 is buckled above the box body 222, which can prevent the wire rope 8 from slipping out from above the limit box 22 during the pulling process. The runner plate 23 is a stretching part, and its middle part is stretched downward to form a runner plate outer ring part 231, a runner plate sinking part 233, and a runner plate connecting part 232 connecting the two. The runner plate sinking part 233 is screwed and fixed to the ratchet wheel 21, and the limit box 22 is sleeved outside the runner plate connecting part 232. The limit box 22 is located between the runner plate outer ring part 231 and the ratchet wheel 21.

[0031] The support seat 4 is also a stretching part. It is arranged on the bottom plate 1 and sleeved outside the main shaft 3. The middle part is stretched upward to form a support seat fixing part 41, a support seat connecting part 42, and a support seat supporting part 43. The support seat fixing part 41 is fixed to the bottom plate 1, the support seat connecting part 42 connects the support seat fixing part 41 and the support seat connecting part 42, and the support seat supporting part 43 supports on the lower surface of the ratchet wheel 21. The support seat supporting part 43 is annular, which can provide a more uniform supporting force for the runner assembly 2. The inner diameter of its ring hole 401 is slightly larger than the outer diameter of the main shaft 3 at this height. By restricting the inner diameter of the ring hole 401, the ring hole 401 can just allow the main shaft 3 to pass through smoothly, further restricting the swaying of the main shaft 3. The support seat fixing part 41 is also annular. The support seat fixing part 41 is provided with three first mounting holes 411, and the bottom plate 1 is provided with second mounting holes 12 corresponding to the first mounting holes 411. The fixing parts pass through the first mounting holes 411 and the second mounting holes 12 to fixedly install the support seat 4 and the bottom plate 1.

[0032] The working principle of this embodiment: The support seat 4 has a support seat supporting part 43 that is lifted relative to the bottom plate 1. The support seat supporting part 43 gives the runner assembly 2 a surface support from below and also restricts the runner assembly 2. Since the runner assembly 2 is tightly sleeved on the main shaft 3, the restriction on the former naturally extends to the latter. Specifically, when the runner assembly 2 obtains a stable surface support, its possible up and down swing is eliminated by the support seat 4. This effect reversely inhibits the swaying of the main shaft 3, ensuring the stability of the actuator adopting the utility model during operation, improving the overall performance while also having the significant advantages of small occupied space and simple structure.

Claims

1. A runner mounting structure of an actuator, comprising a bottom plate (1); a main shaft (3) rotatably arranged on the bottom plate (1); a runner assembly (2) sleeved on the main shaft (3) and rotating synchronously with the main shaft (3); It is characterized in that further comprising a support seat (4) arranged on the bottom plate (1) and sleeved outside the main shaft (3), including a support seat fixing part (41) which is fixed to the bottom plate (1). The support seat fixing part (41) extends vertically away from the bottom plate (1) to form a support seat connecting part (42), and the support seat connecting part (42) extends horizontally to form a support seat supporting part (43). The support seat supporting part (43) supports the lower surface of the runner assembly (2).

2. The runner mounting structure of the actuator according to claim 1, characterized in that, The support seat supporting part (43) is annular.

3. The runner mounting structure of the actuator according to claim 1, characterized in that, The support seat (4) is provided with an annular hole (401). The support seat (4) is sleeved outside the main shaft (3) through the annular hole (401), and the inner diameter of the annular hole (401) is slightly larger than the outer diameter of the main shaft (3) at this height.

4. The runner mounting structure of the actuator according to claim 3, characterized in that, The support seat fixing part (41) is annular, and is provided with at least two first mounting holes (411). The bottom plate (1) is provided with second mounting holes (12) corresponding to the first mounting holes (411). Fixing pieces pass through the first mounting holes (411) and the second mounting holes (12) to fixedly install the support seat (4) and the bottom plate (1).

5. The runner mounting structure of the actuator according to any one of claims 1 to 4, characterized in that, The runner assembly (2) includes a ratchet wheel (21). The ratchet wheel (21) is sleeved on the main shaft (3) and fixed to the main shaft (3). The support seat supporting part (43) supports the lower surface of the ratchet wheel (21).

6. The runner mounting structure of the actuator according to claim 5, characterized in that, The runner assembly (2) further includes a limit box (22) for restricting a steel wire rope (8). The middle part of the limit box (22) is provided with an opening and sleeved on the main shaft (3). The side surface of the limit box (22) is provided with a wire rope inlet hole (224) for the steel wire rope (8) to enter.

7. The runner mounting structure of the actuator according to claim 6, characterized in that, The limit box (22) extends at least two elastic buckles (223). The bottom plate (1) is provided with corresponding buckles (13). The elastic buckles (223) pass through the buckles (13) and then buckle the bottom plate (1) to fix the limit box (22) and the bottom plate (1).

8. The runner mounting structure of the actuator according to claim 7, characterized in that, The limit box (22) includes a box cover (221) and a box body (222). The box cover (221) is buckled above the box body (222).

9. The runner mounting structure of the actuator according to claim 8, characterized in that, The runner assembly (2) further includes a runner plate (23) sleeved on the main shaft (3). The middle part of the runner plate (23) is concave, so that the runner plate (23) includes a runner plate outer ring part (231), a runner plate sinking part (233) and a runner plate connecting part (232) connecting the two. The runner plate sinking part (233) is fixed to the ratchet wheel (21). The limit box (22) is sleeved outside the runner plate connecting part (232), and the limit box (22) is located between the runner plate outer ring part (231) and the ratchet wheel (21).

10. The runner mounting structure of the actuator according to claim 9, characterized in that, The bottom plate (1) is provided with a main shaft hole (11). The outer diameter of the lower part of the main shaft (3) is reduced to form a stepped surface (31). The part of the main shaft (3) below the stepped surface (31) passes through the main shaft hole (11). The stepped surface (31) abuts against the upper surface of the bottom plate (1). A retaining ring (32) is arranged on the part of the main shaft (3) below the bottom plate (1). The retaining ring (32) abuts against the lower surface of the bottom plate (1).

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