CN203067613U - Ratchet wheel type braking mechanism - Google Patents
Ratchet wheel type braking mechanism Download PDFInfo
- Publication number
- CN203067613U CN203067613U CN 201220679801 CN201220679801U CN203067613U CN 203067613 U CN203067613 U CN 203067613U CN 201220679801 CN201220679801 CN 201220679801 CN 201220679801 U CN201220679801 U CN 201220679801U CN 203067613 U CN203067613 U CN 203067613U
- Authority
- CN
- China
- Prior art keywords
- lever
- belt
- rolling cylinder
- ratchet
- ratchet wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a ratchet wheel type braking mechanism which comprises a machine base, a ratchet wheel, a pawl, a rolling cylinder, a belt and a lever, wherein the ratchet wheel and the pawl are connected with an output shaft in a rotating mode, the rolling cylinder fixes the pawl, the belt is wound on the rolling cylinder, the lever is hinged with the machine base, the ratchet wheel and the pawl are meshed, the circle center of the rolling cylinder is hinged on the machine base, supports are arranged at the driven end of the lever, two ends of the belt are connected on the supports, the distances from two connecting points of the belt to a hinge point of the lever are not equal, a balance weight is arranged at the driving end of the lever, the swinging direction of the driving end of the lever and the free rotating direction of the rolling cylinder are the same, and the swinging range of the driving end of the lever is 0-90 degrees. When the rolling cylinder rotates toward a braking direction, the driving end of the lever rotates toward the free rotating direction of the rolling cylinder, two ends of the belt move toward the tension-increasing direction of the belt, friction torque between the rolling cylinder and the belt is increased, and the rolling cylinder stops gradually. The ratchet wheel type braking mechanism is not single-point braking, uniform in stress and stable in braking process, and deformation and fatigue damage can not occur easily.
Description
Technical field
The utility model belongs to the technical field of anchor clamps, relates in particular to a kind of ratchet-type arrestment mechanism.
Background technique
Braking device is used for realizing the action that vehicle and other means of transportation or machinery etc. stop or lowering speed, usually adopt the single-point braking now, exist the shortcoming of movement parts, fixed block and brake component discontinuity, make the braking process stationarity poor, related components deforms easily, fatigue damage.
The model utility content
The technical problems to be solved in the utility model provides a kind of clamp device, makes movement parts, fixed block and brake component stressed evenly, is difficult for deforming.
In order to solve the problems of the technologies described above, the utility model provides following technological scheme: a kind of ratchet-type arrestment mechanism, comprise support, the ratchet that is rotationally connected with output shaft, ratchet, the cylinder of fixed pawl, walk around the belt of cylinder, the lever hinged with support, described ratchet and ratchet engagement, the center of circle of cylinder is hinged on the support, the driven end of described lever is provided with support, the two ends of belt are connected on the support, belt two tie points are unequal to the distance of lever hinge, the drive end of lever is provided with counterweight, the swaying direction of lever drive end is identical with the free sense of rotation of cylinder, the hunting range 0-90 degree of lever drive end.
Compared with prior art, advantage of the present utility model is: during operation, when lever was positioned at the cylinder right side, when output shaft turned clockwise, ratchet turned clockwise under the drive of output shaft, drove cylinder by ratchet and freely rotated clockwise; When output shaft is rotated counterclockwise, ratchet is rotated counterclockwise under the drive of output shaft, driving cylinder by ratchet rotates counterclockwise, at this moment, the drive end of lever rotates to clockwise direction, all move to the direction that increases belt tension at the two ends of belt, cornerite increases simultaneously, increased frictional force and friction area, thereby increased the friction torque between cylinder and the belt, cylinder stops gradually, the non-single-point braking of this kind mode, make movement parts, fixed block and brake component stressed evenly, braking process is steady, is difficult for deforming and fatigue damage.
Further, described counterweight and lever drive end are slidingly connected, and can regulate the position of counterweight as required, thereby regulate the length of the arm of force.
Description of drawings
Below in conjunction with drawings and Examples technical solutions of the utility model are further specified:
Fig. 1 is a kind of embodiment's of the utility model ratchet-type arrestment mechanism structural representation.
Embodiment
As shown in Figure 1, a kind of ratchet-type arrestment mechanism of the utility model, comprise support, the ratchet 1 that is rotationally connected with output shaft 8, ratchet 2, the cylinder 3 of fixed pawl 2, walk around the belt 4 of cylinder 3, the lever 5 hinged with support, described ratchet 1 and ratchet 2 engagements, the center of circle of cylinder 3 is hinged on the support, described lever 5 is positioned at cylinder 3 right sides, the driven end of lever 5 is provided with support 6, the two ends of belt 4 are connected on the support 6,4 liang of tie points of belt are unequal to the distance of lever 5 hinges, the drive end of lever 5 is provided with counterweight 7, and the swaying direction of lever 5 drive ends is clockwise, the hunting range 0-90 degree of lever 5 drive ends.Described counterweight 7 is slidingly connected with lever 5 drive ends, can regulate the position of counterweight 7 as required, thereby regulates the length of the arm of force.
During operation, when output shaft 8 turned clockwise, ratchet 1 turned clockwise under the drive of output shaft 8, drove cylinder 3 by ratchet 2 and freely rotated clockwise; When output shaft 8 is rotated counterclockwise, ratchet 1 is rotated counterclockwise under the drive of output shaft 8, driving cylinder 3 by ratchet 2 rotates counterclockwise, at this moment, the drive end of lever 5 rotates to clockwise direction, all move to the direction that increases belt 4 tension force at the two ends of belt 4, cornerite increases simultaneously, increased frictional force and friction area, thereby increased the friction torque between cylinder 3 and the belt 4, cylinder 3 stops gradually, the non-single-point braking of this kind mode, make movement parts, fixed block and brake component stressed evenly, braking process is steady, is difficult for deforming and fatigue damage.
For a person skilled in the art; under the prerequisite that does not break away from the utility model structure; can also make some distortion and improvement, these also should be considered as protection domain of the present utility model, and these can not influence effect and practical applicability that the utility model is implemented.
Claims (2)
1. ratchet-type arrestment mechanism, it is characterized in that: the cylinder of the ratchet that comprises support, is rotationally connected with output shaft, ratchet, fixed pawl, walk around the belt of cylinder, the lever hinged with support, described ratchet and ratchet engagement, the center of circle of cylinder is hinged on the support, the driven end of described lever is provided with support, the two ends of belt are connected on the support, belt two tie points are unequal to the distance of lever hinge, the drive end of lever is provided with counterweight, the swaying direction of lever drive end is identical with the free sense of rotation of cylinder, the hunting range 0-90 degree of lever drive end.
2. ratchet-type arrestment mechanism as claimed in claim 1, it is characterized in that: described counterweight and lever drive end are slidingly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679801 CN203067613U (en) | 2012-12-11 | 2012-12-11 | Ratchet wheel type braking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220679801 CN203067613U (en) | 2012-12-11 | 2012-12-11 | Ratchet wheel type braking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067613U true CN203067613U (en) | 2013-07-17 |
Family
ID=48766400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220679801 Expired - Fee Related CN203067613U (en) | 2012-12-11 | 2012-12-11 | Ratchet wheel type braking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067613U (en) |
-
2012
- 2012-12-11 CN CN 201220679801 patent/CN203067613U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20131211 |