Limiting mechanism and rotary table equipment
By designing the coordination of the driving wheel, driven wheel, and blocking component in the limiting mechanism, a 720° limit on the turntable was achieved, solving the problems of complex structure and high cost in the existing technology, and achieving a safe and reliable limiting effect.
Patent Information
- Application Number
- CN202423185841.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing limiting mechanisms can only limit rotation within a 360° range for rotating equipment such as turntables. They are complex in structure, require expensive control components, and are costly.
A limiting mechanism was designed, including a driving wheel, a driven wheel, a limiting tooth segment, and a blocking component. By engaging and disengaging the driving wheel and the limiting tooth segment, combined with the abutment of the block and the blocking component, a 720° limit on the driving shaft is achieved, simplifying the mechanical structure and reducing costs.
It achieves 720° limit of the turntable, has a safe and reliable mechanical structure, reduces costs, and avoids dependence on expensive control components.
Smart Images
Figure CN223544643U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical production equipment technology, and in particular to a limiting mechanism and a turntable device. Background Technology
[0002] Rotary equipment such as turntables are commonly used in the field of machining. The limit mechanism of a turntable is a device used to limit the rotation angle of the turntable, which ensures that the turntable operates safely and accurately within a specific working range.
[0003] In existing technologies, there are generally limit requirements for rotating equipment such as turntables, especially in some special cases where it is necessary to limit the rotation of the turntable or other rotating equipment for at least two revolutions.
[0004] The applicant has discovered that the prior art has at least the following technical problems: Most of the limit mechanisms in the prior art can only achieve limit within a 360° range for rotating equipment such as turntables. They have complex structures and require expensive equipment such as control elements, motor encoders, and controllers to achieve the goal, resulting in high costs. Utility Model Content
[0005] The purpose of this utility model is to provide a limiting mechanism and a turntable device to solve the technical problems of existing limiting mechanisms that can only limit rotational equipment such as turntables within a 360° range, and are complex in structure and high in cost; the various technical effects of the preferred technical solutions provided by this utility model are described in detail below.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] The limiting mechanism provided by this utility model includes a blocking member, a drive shaft, a limiting shaft, a drive wheel fixed on the drive shaft, and a driven wheel fixed on the limiting shaft, wherein:
[0008] The driving wheel has a driving tooth segment on its outer periphery; the driven wheel has at least two limiting tooth segments on its outer periphery, and all the limiting tooth segments are arranged at intervals; a stop block is fixed on the driven wheel, and the blocking member is fixed to an external device;
[0009] When the drive wheel rotates in the forward or reverse direction, the drive tooth segment meshes with different limit tooth segments. When the drive tooth segment disengages from the corresponding limit tooth segment, the drive tooth segment rotates one revolution in the forward or reverse direction, and the collision block abuts against the blocking member, thereby restricting the drive wheel to rotate only one revolution in the forward or reverse direction.
[0010] Preferably, all the limiting tooth segments are arranged at intervals around the center of the driven wheel.
[0011] Preferably, the limiting tooth segment includes a first limiting tooth segment and a second limiting tooth segment, and a locking arc segment is provided between the first limiting tooth segment and the second limiting tooth segment. The locking arc segment and the limiting tooth segment are arranged with the same center. When the driving tooth segment rotates to the position of extending into the locking arc segment, the bumper abuts against the blocking member.
[0012] Preferably, the teeth of the limiting tooth segment protrude beyond the locking arc segment.
[0013] Preferably, the drive wheel rotates in the forward direction, and during the process of the drive tooth segment engaging and disengaging from the first limiting tooth segment, the drive wheel rotates one revolution in the forward direction;
[0014] The drive wheel rotates in the opposite direction, and during the process of the drive tooth segment engaging and disengaging from the second limiting tooth segment, the drive wheel rotates one revolution in the opposite direction.
[0015] Preferably, the teeth of the drive tooth segment are evenly spaced around the center of the drive wheel, and the teeth of the drive tooth segment protrude beyond the remaining positions on the outer periphery of the drive wheel.
[0016] Preferably, the blocking member includes a first blocking block and a second blocking block, the first blocking block and the second blocking block are located on the side of the driven wheel with the contact block, and the contact block is always located between the first blocking block and the second blocking block.
[0017] Preferably, the first blocking block and the second blocking block are arranged opposite to each other. When the drive wheel rotates in the forward direction and the drive tooth segment rotates from the meshing state to the disengagement state with the first limiting tooth segment, the collision block abuts against the first blocking block. When the drive wheel rotates in the reverse direction and the drive tooth segment rotates from the meshing state to the disengagement state with the second limiting tooth segment, the collision block abuts against the second blocking block.
[0018] Preferably, the limiting tooth segment is provided in four segments on the outer periphery of the driven wheel, all the limiting tooth segments are arranged with the same center, and there is a locking arc segment between any two adjacent limiting tooth segments.
[0019] This utility model also provides a turntable device, including a turntable and the aforementioned limiting mechanism, wherein the turntable is fixedly connected to the drive shaft.
[0020] The limiting mechanism and turntable device provided by this utility model have the following advantages compared with the prior art: When the driving wheel rotates forward under the drive of the driving shaft, the driving tooth segment can mesh with the limiting tooth segment until the driving tooth segment disengages from the limiting tooth segment. At this time, the stop block abuts against the blocking member, restricting the continuous rotation of the driven wheel and the driving wheel. At this time, the driving tooth rotates one revolution and can no longer continue to rotate. The opposite is true when the driving tooth rotates in the opposite direction under the drive of the driving shaft. The above-mentioned limiting mechanism can achieve 720° limiting of the driving shaft, the mechanical structure is safe and reliable, and the cost is reduced. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the overall structure of the limiting mechanism of this utility model;
[0023] Figure 2 This is a top view of the limit mechanism;
[0024] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure at point AA.
[0025] In the diagram: 1. Drive shaft; 2. Limiting shaft; 3. Drive wheel; 31. Drive gear segment; 4. Driven wheel; 41. Limiting gear segment; 411. First limiting gear segment; 412. Second limiting gear segment; 42. Locking arc segment; 5. Block; 61. First blocking block; 62. Second blocking block; 7. Drive shaft sleeve; 8. Drive bearing; 9. Limiting shaft sleeve; 10. Limiting bearing; 11. Spacer. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] In the description of this utility model, it should be understood that the terms "center," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0028] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] This utility model provides a limiting mechanism and a turntable device that can limit the drive shaft to 720°, with a safe and reliable mechanical structure and reduced costs.
[0030] The following is combined Figures 1-3 The technical solution provided by this utility model will be described in more detail.
[0031] Example 1:
[0032] The limiting mechanism provided by this utility model includes blocking components (first blocking block 61, second blocking block 62), a drive shaft 1, a limiting shaft 2, a drive wheel 3 fixed on the drive shaft 1, and a driven wheel 4 fixed on the limiting shaft 2. The drive wheel 3 has a drive tooth segment 31 on its outer periphery; the driven wheel 4 has at least two limiting tooth segments 41 on its outer periphery, with all limiting tooth segments 41 arranged at intervals; a stop block 5 is fixed on the driven wheel 4, and the blocking components are fixed to an external device. When the drive wheel 3 rotates forward or backward, the drive tooth segment 31 meshes with different limiting tooth segments 41. When the drive tooth segment 31 disengages from the corresponding limiting tooth segment 41, the drive wheel 3 rotates one revolution forward or backward, and the stop block 5 abuts against the blocking components, thereby limiting the continuous rotation of the driven wheel 4 and the drive wheel 3.
[0033] The blocking component can be fixed to external equipment such as a frame using screws or other locking devices.
[0034] The limiting mechanism provided by this utility model allows the driving gear segment 31 to mesh with the limiting gear segment 41 when the driving wheel 3 rotates forward under the drive of the driving shaft 1. This meshing continues until the driving gear segment 31 disengages from the limiting gear segment 41, at which point the stop block 5 abuts against the blocking member. During this time, the driving gear rotates one revolution. After the driving wheel 3 rotates one revolution (360°), the driving gear segment 31 will mesh with the limiting gear segment 41 again. At this point, because the stop block 5 abuts against the blocking member, the driven wheel 4 cannot continue to rotate, thus limiting the driving wheel 3's further rotation. Therefore, the driving wheel 3 can only rotate 360° forward. The reverse is true when the driving gear rotates in the opposite direction under the drive of the driving shaft 1. This limiting mechanism can achieve a 720° limit on the driving shaft 1, has a safe and reliable mechanical structure, and reduces costs.
[0035] Of the two directions, one is clockwise and the other is counterclockwise.
[0036] As an optional implementation, see Figure 1 and Figure 2 As shown, all the limiting tooth segments 41 are arranged at intervals around the center of the driven wheel 4.
[0037] In the above structure, the driving tooth rotates one revolution forward under the drive of the driving shaft 1, the driven tooth rotates by a certain angle of the limiting tooth segment 41, the driving tooth rotates one revolution in the opposite direction under the drive of the driving shaft 1, the driving tooth segment 31 meshes with another limiting tooth segment 41 of the driven tooth, and the driven tooth rotates another limiting tooth segment 41 in the opposite direction, thereby achieving the limiting of the driving shaft 1 for at least two revolutions.
[0038] As an optional implementation, see Figure 1 and Figure 2 As shown, the limiting tooth segment 41 includes a first limiting tooth segment 411 and a second limiting tooth segment 412. A locking arc segment 42 is provided between the first limiting tooth segment 411 and the second limiting tooth segment 412. The locking arc segment 42 and the limiting tooth segment 41 are co-centered. When the driving tooth segment 31 rotates to the position of extending into the locking arc segment 42, the stop block 5 abuts against the blocking member. For details, see [link to details]. Figure 2 As shown, the teeth of the limiting tooth segment 41 protrude beyond the locking arc segment 42.
[0039] The above structure enables the driven wheel 4 to rotate with the driving wheel 3 when the driving tooth segment 31 meshes with the first limiting tooth segment 411 or the second limiting tooth segment 412. When the driving tooth segment 31 engages with the locking arc segment 42 (the driving tooth segment 31 disengages from the first limiting tooth segment 411 or the second limiting tooth segment 412), the collision block 5 abuts against the blocking member, restricting the continuous rotation of the driven wheel 4 and the driving wheel 3.
[0040] The locking arc segment 42 is the outer peripheral wall of the driven wheel 4 without teeth, thereby realizing the intermittent setting of the limiting tooth segment 41 and reserving clearance space for the steering of the driving wheel 3.
[0041] For details, see Figure 1 and Figure 2 As shown, the limiting tooth segment 41 is provided with four segments on the outer periphery of the driven wheel 4. All the limiting tooth segments 41 are arranged with the same center, and there is a locking arc segment 42 between any two adjacent limiting tooth segments 41.
[0042] As an optional implementation, see Figure 1 and Figure 2 As shown, the driving wheel 3 rotates in the forward direction, and during the process of the driving tooth segment 31 and the first limiting tooth segment 411 engaging and disengaging, the driving wheel 3 rotates one revolution in the forward direction; the driving wheel 3 rotates in the reverse direction, and during the process of the driving tooth segment 31 and the second limiting tooth segment 412 engaging and disengaging, the driving wheel 3 rotates one revolution in the reverse direction.
[0043] The above structure can achieve a 1720° limit on the drive shaft.
[0044] As an optional implementation, see Figure 1 and Figure 2 As shown, the teeth of the drive tooth segment 31 are evenly spaced around the center of the drive wheel 3, and the teeth of the drive tooth segment 31 protrude beyond the rest of the outer periphery of the drive wheel 3.
[0045] The driving tooth segment 31 is only provided on the outer periphery of the driving wheel 3. This driving tooth segment 31 engages with either the first limiting tooth segment 411 or the second limiting tooth segment 412. When the driving tooth segment 31 meshes with the limiting tooth segment 41, the driven wheel 4 rotates. When the driving tooth segment 31 disengages from the driven wheel 4, the remaining position on the outer periphery of the driving wheel 3 is not restricted by the driven wheel 4. Therefore, the driving wheel 3 can only achieve positional limitation when the driving tooth segment 31 meshes with the limiting tooth segment 41. After the driving wheel 3 rotates one revolution (360°), the driving tooth segment 31 will mesh with the limiting tooth segment 41 again. At this time, because the stop block 5 abuts against the blocking member, the driven wheel 4 cannot continue to rotate, thus restricting the driving wheel 3 from continuing to rotate.
[0046] As an optional implementation, see Figure 1 and Figure 2 As shown, the blocking component includes a first blocking block 61 and a second blocking block 62. The first blocking block 61 and the second blocking block 62 are located on the side of the driven wheel 4 with the contact block 5, and the contact block 5 is always located between the first blocking block 61 and the second blocking block 62. For details, see [link to documentation]. Figure 1 and Figure 2As shown, the first blocking block 61 and the second blocking block 62 are arranged opposite to each other. When the driving wheel 3 rotates in the forward direction and the driving tooth segment 31 rotates from the meshing state to the disengagement state with the first limiting tooth segment 411, the colliding block 5 abuts against the first blocking block 61. When the driving wheel 3 rotates in the reverse direction and the driving tooth segment 31 rotates from the meshing state to the disengagement state with the second limiting tooth segment 412, the colliding block 5 abuts against the second blocking block 62.
[0047] When the contact block 5 abuts against the first blocking block 61 and the second blocking block 62, and the driving tooth segment 31 meshes with the limiting tooth segment 41, the position of the driving wheel 3 can be limited. The driven wheel 4 can only rotate 90° in the forward or reverse direction, thus limiting the driving wheel 3 to ±360°.
[0048] The working principle of this embodiment is as follows: (See...) Figure 1 and Figure 2 As shown, when the driving wheel 3 rotates forward under the drive of the driving shaft 1, the driving tooth segment 31 can mesh with the limiting tooth segment 41 until the driving tooth segment 31 disengages from the limiting tooth segment 41. At this point, the stop block 5 abuts against the blocking member. Since the driving tooth segment 31 disengages from the limiting tooth segment 41, the driving wheel 3 and the driven wheel 4 are no longer meshed, and the driving wheel 3 can rotate one revolution. After the driving wheel 3 rotates one revolution (360°), the driving tooth segment 31 meshes with the limiting tooth segment 41 again. At this time, since the stop block 5 abuts against the blocking member, the driven wheel 4 cannot continue to rotate, thus restricting the driving wheel 3 from continuing to rotate. Therefore, the driving wheel 3 can only rotate 360° forward. The opposite occurs when the driving tooth rotates in the opposite direction under the drive of the driving shaft 1. The above-mentioned limiting mechanism can achieve a 720° limit on the driving shaft 1, the mechanical structure is safe and reliable, and the cost is reduced.
[0049] Example 2:
[0050] See Figures 1-3 As shown, this embodiment provides a turntable device, including a turntable and the item limiting mechanism described in the above embodiment. The turntable is fixedly connected to the drive shaft 1. The above structure can achieve a 720° limit on the turntable.
[0051] See Figure 3 As shown, the drive shaft 1 is fitted with a drive shaft sleeve 7, and the drive shaft 1 and the drive shaft sleeve 7 are connected by a drive bearing 8. The limit shaft 2 is fitted with a limit shaft sleeve 9, and the limit shaft 2 and the limit shaft sleeve 9 are connected by a limit bearing 10. There are two limit bearings 10, and a spacer 11 is provided between the two limit bearings.
[0052] The specific features, structures, or characteristics described in this specification may be combined in any suitable manner in one or more embodiments or examples.
[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0054] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A limiting mechanism, characterized in that, It includes a blocking component, a drive shaft, a limiting shaft, a driving wheel fixed to the drive shaft, and a driven wheel fixed to the limiting shaft, wherein: The driving wheel has a driving tooth segment on its outer periphery; the driven wheel has at least two limiting tooth segments on its outer periphery, and all the limiting tooth segments are arranged at intervals; a stop block is fixed on the driven wheel, and the blocking member is fixed to an external device; When the drive wheel rotates in the forward or reverse direction, the drive tooth segment meshes with different limit tooth segments. When the drive tooth segment disengages from the corresponding limit tooth segment, the collision block abuts against the blocking member, thereby restricting the drive wheel to rotate only one revolution in the forward or reverse direction.
2. The limiting mechanism according to claim 1, characterized in that, All the aforementioned limiting tooth segments are arranged at intervals around the center of the driven wheel.
3. The limiting mechanism according to claim 1 or 2, characterized in that, The limiting tooth segment includes a first limiting tooth segment and a second limiting tooth segment. A locking arc segment is provided between the first limiting tooth segment and the second limiting tooth segment. The locking arc segment and the limiting tooth segment are arranged in the same circle. When the driving tooth segment rotates to the position of extending into the locking arc segment, the bumper abuts against the blocking member.
4. The limiting mechanism according to claim 3, characterized in that, The teeth of the limiting tooth segment protrude beyond the locking arc segment.
5. The limiting mechanism according to claim 3, characterized in that, The drive wheel rotates in the forward direction, and during the process of the drive tooth segment engaging and disengaging from the first limiting tooth segment, the drive wheel rotates one revolution in the forward direction; The drive wheel rotates in the opposite direction, and during the process of the drive tooth segment engaging and disengaging from the second limiting tooth segment, the drive wheel rotates one revolution in the opposite direction.
6. The limiting mechanism according to claim 1, characterized in that, The teeth of the drive gear segment are evenly spaced around the center of the drive wheel, and the teeth of the drive gear segment protrude beyond the remaining positions on the outer periphery of the drive wheel.
7. The limiting mechanism according to claim 3, characterized in that, The blocking element includes a first blocking block and a second blocking block, the first blocking block and the second blocking block being located on the side of the driven wheel with the contact block, and the contact block being always located between the first blocking block and the second blocking block.
8. The limiting mechanism according to claim 7, characterized in that, The first blocking block and the second blocking block are arranged opposite to each other. When the driving wheel rotates in the forward direction and the driving tooth segment rotates from the meshing state to the disengagement state with the first limiting tooth segment, the colliding block abuts against the first blocking block. When the driving wheel rotates in the reverse direction and the driving tooth segment rotates from the meshing state to the disengagement state with the second limiting tooth segment, the colliding block abuts against the second blocking block.
9. The limiting mechanism according to claim 3, characterized in that, The limiting tooth segment is provided in four segments on the outer periphery of the driven wheel. All the limiting tooth segments are arranged with the same center, and there is a locking arc segment between any two adjacent limiting tooth segments.
10. A turntable device, characterized in that, It includes a turntable and a limiting mechanism as described in any one of claims 1-9, wherein the turntable is fixedly connected to the drive shaft.