Manual triggering device of speed limiter
By designing a detachable speed limiter manual trigger device, the existing device has complex structure and cumbersome operation problems, and the effect of simple structure, convenient operation and high testing efficiency is achieved.
Patent Information
- Application Number
- CN202422406931.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing manual trigger device of the speed limiter has a complex structure, cumbersome operation and is inconvenient to disassembly, which affects the operating reliability and testing efficiency of the speed limiter.
A detachable speed limiter manual trigger device is designed, including an upper case, frame plate and speed limiter body. The speed limiter action is realized through the trigger rod and manual trigger handle assembly. After the test is completed, the manual trigger handle assembly can be detached.
The speed limiter manual trigger device with simple structure, convenient operation and does not affect the operation of the speed limiter, improves the testing efficiency and simplifies the disassembly and installation process of the device.
Smart Images
Figure CN223016179U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of elevator parts, and specifically relates to a manual trigger device for a speed limiter. Background Art
[0002] Currently, in elevator inspections, it is required to operate the speed limiter at the rated speed. Therefore, in order not to replace the on-site speed limiter, a manual trigger device is added to meet the requirements of test inspections.
[0003] There is a prior art disclosure of a manually triggerable speed limiter device, including: a speed limiter housing, a speed limiter wheel, a pawl, a ratchet wheel, a pressure plate, a flyweight assembly, and a rope pressing assembly. The speed limiter device further includes a manual trigger assembly, and the manual trigger assembly includes a trigger striker plate, a reset member, a sliding member, and a guiding member; the trigger striker plate is connected to the pressure plate, and the guiding member is fixed on the speed limiter housing; the sliding member is slidably disposed in a through hole of the guiding member, and one end of the sliding member can extend into the inner side of the speed limiter housing under the action of an external force through a through hole on the speed limiter housing. When one end of the sliding member extends into the inner side of the speed limiter housing, it is on the rotation path of the trigger striker plate following the speed limiter wheel; the reset member is disposed between the guiding member and the sliding member, and when there is no external force acting on the sliding member, the sliding member is kept outside the speed limiter housing.
[0004] The operating principle of this device: When the speed limiter device operates below the rated trigger speed, remove the anti-misoperation member, manually press the sliding member to make the sliding member extend into the inner side of the speed limiter housing, and as the speed limiter wheel rotates, the sliding member collides with the trigger striker plate, the sliding member is lifted, and at the same time, since the pressure plate is relatively fixed to the trigger striker plate, the pressure plate is also lifted. At this time, the pawl is released and rotates with the speed limiter wheel and engages with the ratchet wheel, thereby braking the speed limiter wheel and triggering the operation of the speed limiter device. When it is necessary to restore the speed limiter device to the initial state, the hand needs to be released, and the reset member restores the sliding member to the initial position, keeping the sliding member outside the speed limiter housing. Install the anti-misoperation member, and then manually reset the pawl and the pressure plate to restore the speed limiter device to the initial state.
[0005] The speed limiter device with the above structure has the following deficiencies: 1. The structure is complex. This manual trigger assembly is always installed on the speed limiter and is not disassembled before and after the test, which affects the structure and operation reliability of the speed limiter to a certain extent. 2. The operation is complex. It is necessary to manually press the sliding member to make the sliding member extend into the inner side of the speed limiter housing, and as the speed limiter wheel rotates, the sliding member collides with the trigger striker plate, the sliding member is lifted, and at the same time, since the pressure plate is relatively fixed to the trigger striker plate, the pressure plate is also lifted. At this time, the pawl is released, and the triggering efficiency is relatively low, which brings inconvenience to the test. Summary of the Utility Model
[0006] The technical problem to be solved by the present utility model is to provide a manual trigger device for a speed limiter, which has a simple structure, is convenient to operate, is installed before testing and disassembled after testing, does not affect the operation of the speed limiter itself, and brings convenience to testing.
[0007] The technical solution of the present utility model is to provide a manual trigger device for a speed limiter having the following structure, including an upper housing, a frame plate, and a speed limiter body provided in the upper housing and the frame plate. A rope wheel and a flyweight are provided on the speed limiter body. The central shaft sleeve of the rope wheel is connected to one end of the flyweight through a trigger rod, and a spring is sleeved on the trigger rod for positioning the installation distance between the flyweight and the central shaft sleeve. It is characterized in that: a connecting block at one end of the trigger rod extending out of the flyweight is detachably provided with a trigger block, and a manual trigger handle assembly is detachably connected to the frame plate. When the manual trigger handle assembly rotates from the initial position to the trigger position, it pushes the trigger block to make the speed limiter act; in the test end state, the trigger block is disassembled from the trigger rod and the manual trigger handle assembly is disassembled from the frame plate.
[0008] After adopting the above structure, the present utility model has the following advantages: 1. The detachable structure of the manual trigger device is adopted. In the test end state, the trigger block is disassembled from the trigger rod and the manual trigger handle assembly is disassembled from the frame plate. It is installed before testing and disassembled after testing. After the test, the manual trigger handle assembly can be disassembled without affecting the operation of the speed limiter itself. 2. The operation is simple. Manually operate the manual trigger handle assembly to rotate from the initial position to the trigger position, which pushes the trigger block to make the speed limiter act. The tester only needs to rotate the manual trigger handle from the initial position to the trigger position to push the trigger block, thereby prompting the speed limiter to start working. This structure reduces unnecessary steps and improves the test efficiency.
[0009] As an improvement, the manual trigger handle assembly includes a trigger handle and a limit shaft. The trigger handle is L-shaped and rotatably connected to the frame plate, which enables it to be flexibly installed in a limited space and is easy for the operator to manually trigger. One end of the trigger handle extends horizontally outside the upper housing, which is convenient for the operator to operate. When the rope wheel rotates in the initial state, there is a distance between the trigger handle and the trigger block to avoid affecting the normal operation of the speed limiter; rotating the trigger handle to make the trigger handle push the trigger block makes the speed limiter act.
[0010] As an improvement, the limit shaft is fixed to the trigger handle; when rotating the trigger handle to make the trigger handle push the trigger block, the limit shaft on the trigger handle abuts against the top of the frame plate and is positioned at this position, increasing the swing limit of the trigger handle and providing a precise swing angle.
[0011] As an improvement, the trigger handle includes a cross bar and a vertical bar. The inner end of the cross bar is fixed to the top end of the vertical bar. The limit shaft is installed on the cross bar. This trigger handle enables convenient triggering and positioning.
[0012] As an improvement, the outer side wall of the vertical bar is provided with an arc surface. There is a gap between the arc surface and the trigger block when the cross bar swings upward, and the arc surface abuts against the trigger block to trigger the speed limiter to act when the cross bar swings downward. A certain distance is maintained between the trigger handle and the trigger block to prevent mis-triggering, and at the same time ensure that the speed limiter can operate normally. The arc surface abuts against the trigger block to trigger the speed limiter to act when the cross bar swings downward.
[0013] As an improvement, a groove is provided at the inner corner of the trigger handle. A rope blocking rod is provided on the frame plate. The axis of the rope blocking rod is parallel to the axis of the rope pulley. The groove is embedded outside the rope blocking rod to achieve rotational connection and the two are detachably connected. While achieving rotation, the trigger handle can be disassembled most quickly.
[0014] As an improvement, the frame plate includes a front plate and a rear plate. The rope blocking rod passes through the front plate and the rear plate, providing a reference for the installation and rotation of the trigger handle.
[0015] As an improvement, the free end of the cross bar extends out of the same side surface of the upper housing and the frame plate, facilitating the operation of the tester. The tester can easily access it without opening the housing of the device or performing other complex operations. Description of the Drawings
[0016] Figure 1 Is a three-dimensional schematic diagram of the manual trigger device of the speed limiter of the present utility model.
[0017] Figure 2 Is an exploded schematic diagram of the manual trigger device of the speed limiter of the present utility model.
[0018] Figure 3 Is an internal schematic diagram of the manual trigger device of the speed limiter of the present utility model.
[0019] Figure 4 Is a schematic diagram of the trigger handle of the present utility model.
[0020] Figure 5 Is a top view schematic diagram of the manual trigger device of the speed limiter of the present utility model.
[0021] Figure 6 Is a split schematic diagram of the upper housing and the frame plate of the manual trigger device of the speed limiter of the present utility model.
[0022] Figure 7 Is another internal perspective view of the manual trigger device of the speed limiter of the present utility model.
[0023] Figure 8 This is another perspective view of the trigger handle of the present utility model.
[0024] As shown in the figure: 1. Upper housing, 2. Frame plate, 3. Governor body, 4. Rope pulley, 5. Flyweight, 6. Central shaft sleeve, 7. Trigger rod, 8. Spring, 9. Connecting block, 10. Trigger block, 11. Trigger handle, 12. Rope blocking rod, 13. Limit shaft, 14. Cross bar, 15. Vertical bar, 16. Arc surface, 17. Groove. Detailed implementation manners
[0025] The present utility model will be further described below in conjunction with the accompanying drawings.
[0026] As Figure 1-8 shown, the manual trigger device of the governor of the present utility model includes an upper housing 1, a frame plate 2 and a governor body 3 provided in the upper housing 1 and the frame plate 2. A rope pulley 4 and a flyweight 5 are provided on the governor body 3.
[0027] As Figure 3 shown, the central shaft sleeve 6 of the rope pulley 4 is connected to one end of the flyweight 5 through a trigger rod 7, and a spring 8 is sleeved on the trigger rod 7 for positioning the installation distance between the flyweight 5 and the central shaft sleeve 6. The trigger rod 7 is a bolt, the head of which passes through the through hole of the central shaft sleeve 6. One end of the spring 8 abuts against the end face of the through hole, and the other end abuts against the position fixed by screwing two nuts tightly. The position can be adjusted by rotating the two nuts; the tail end of the screw rod then passes through the through hole of the connecting block 9 at one end of the flyweight 5 and is fixed and positioned by screwing nuts tightly at both ends of the through hole, and the tail end of the screw rod extends outside the connecting block 9.
[0028] The trigger rod 7 extends out of the connecting block 9 at one end of the flyweight 5 and is detachably provided with a trigger block 10. The trigger block 10 is a ball head nut and is screwed on the screw rod at the tail end of the trigger rod 7.
[0029] The trigger rod 7 extends out of the connecting block 9 at one end of the flyweight 5 and is detachably provided with a trigger block 10. A manual trigger handle assembly is detachably connected to the frame plate 2. When the manual trigger handle assembly rotates from the initial position to the trigger position, it will push the trigger block 10 to make the governor act; in the test end state, the trigger block 10 is detached from the trigger rod 7 and the manual trigger handle assembly is detached from the frame plate 2.
[0030] As Figure 1-4 、 Figure 7 shown, the manual trigger handle assembly includes a trigger handle 11 and a limit shaft 13. The trigger handle 11 is L-shaped and is rotatably connected to the frame plate 2. One end of the trigger handle 11 extends horizontally outside the upper housing 1; when the rope pulley 4 rotates in the initial state, there is a gap between the trigger handle 11 and the trigger block 10; rotating the trigger handle 11 to make the trigger handle 11 push the trigger block 10 will make the governor act.
[0031] The limiting shaft 13 is fixed to the trigger handle 11; when the trigger handle 11 is rotated to push the trigger block 10, the limiting shaft 13 on the trigger handle 11 abuts against the top of the frame plate 2 and is positioned at this position.
[0032] As Figure 4 and Figure 7 shown, the trigger handle 11 includes a cross bar 14 and a vertical bar 15. The inner end of the cross bar 14 is fixed to the top end of the vertical bar 15, and the limiting shaft 13 is located at the lower part of the inner end of the cross bar 14. Cross bar 14: This is a horizontal bar, one end of which is called the inner end and is connected to the vertical bar, and the other free end extends outside the housing of the device for easy operation by the operator. Vertical bar 15: This is a vertical bar, the top end of which is fixedly connected to the inner end of the cross bar 14 to form an L-shaped structure.
[0033] As Figure 4 shown, an arc surface 16 is provided on the outer side wall of the vertical bar 15. There is a spacing between the arc surface 16 and the trigger block 10 when the cross bar 14 swings upward. When the cross bar 14 swings upward, i.e., in the non-trigger state, a certain distance is maintained between the arc surface 16 and the trigger block 10 to ensure that the speed limiter will not be accidentally triggered and to ensure the normal operation of the system. When the cross bar 14 swings downward, the arc surface 16 abuts against the trigger block 10 to trigger the action of the speed limiter. When it is necessary to trigger the speed limiter, the operator can swing the cross bar 14 downward. At this time, the vertical bar 15 moves accordingly, and the arc surface 16 will contact and abut against the trigger block 10, thereby triggering the action of the speed limiter. In the state where the speed limiter acts, the limiting shaft 13 of the cross bar 14 abuts against the top of the frame plate 2 and is positioned at this position to realize the position positioning of the trigger handle 11.
[0034] A groove 17 is provided at the inner corner of the trigger handle 11. A rope blocking rod 12 is provided on the frame plate 2. The axis of the rope blocking rod 12 is parallel to the axis of the rope pulley 4. The groove 17 is embedded outside the rope blocking rod 12 to achieve a rotatable connection and a detachable connection between the two.
[0035] The frame plate 2 includes a front plate and a rear plate. The rope blocking rod 12 passes through the front plate and the rear plate, which means that the rope blocking rod 12 is installed on the frame plate 2. When the trigger handle 11 is installed, the groove 17 is embedded outside the rope blocking rod 12, and the rope blocking rod 12 is used as the pivot point for rotation. It is installed before the test and disassembled after the test. The connection between the rotating shaft and the frame plate is a detachable connection method, which means that the trigger handle 11 needs to be installed outside the rope blocking rod 12 before the test and can be disassembled after the test is completed.
[0036] As Figure 1 shown, the free end of the cross bar 14 extends out of the same side of the upper housing 1 and the frame plate 2.
[0037] Working principle:
[0038] First part, preparation work:
[0039] First step, install the trigger block and tighten it onto the trigger rod.
[0040] Second step, hook the groove on the trigger handle onto the rope blocking rod and press it tightly against the frame plate.
[0041] Third step, turn the switch upwards so that the top of the trigger block does not touch the guiding surface of the trigger handle when the speed limiter operates.
[0042] Second part, triggering:
[0043] First step, start the elevator and make it run.
[0044] Second step, slowly press down the trigger handle (about 3 - 5 mm) so that the limit screw touches the frame plate, and at the same time the trigger block touches the arc surface of the trigger handle, and the speed limiter operates.
[0045] Third step, after the operation is completed, remove the trigger handle and the trigger block.
Claims
1. A manual trigger device for a speed governor, comprising an upper shell (1), a frame plate (2) and a speed governor body (3) arranged in the upper shell (1) and the frame plate (2), wherein the speed governor body (3) is provided with a rope wheel (4) and a swing block (5), a central sleeve (6) of the rope wheel (4) and one end of the swing block (5) are connected through a trigger rod (7), and a spring (8) is sleeved on the trigger rod (7) for positioning the installation distance between the swing block (5) and the central sleeve (6); characterized in that: The trigger rod (7) extends out of a connection block (9) at one end of the swing block (5) and is detachably provided with a trigger block (10); a manual trigger handle assembly is detachably connected to the frame plate (2); the manual trigger handle assembly is rotated from an initial position to a trigger position to push the trigger block (10) to activate the speed limiter; when the test is finished, the trigger block (10) is removed from the trigger rod (7) and the manual trigger handle assembly is removed from the frame plate (2).
2. The manual triggering device for the speed limiter according to claim 1, characterized in that: The manual trigger handle assembly comprises a trigger handle (11) and a limit shaft (13); the trigger handle (11) is L-shaped and rotatably connected to the frame plate (2); one end of the trigger handle (11) extends transversely out of the upper shell (1); in an initial state, when the rope wheel (4) rotates, a spacing is provided between the trigger handle (11) and the trigger block (10); when the trigger handle (11) is rotated so that the trigger handle (11) pushes the trigger block (10), the speed limiter is actuated.
3. The manual triggering device of the speed limiter according to claim 2, characterized in that: The limit shaft (13) is fixed to the trigger handle (11); when the trigger handle (11) is rotated to make the trigger handle (11) push the trigger block (10), the limit shaft (13) on the trigger handle (11) abuts against the top of the frame plate (2) and is positioned at this position.
4. The manual triggering device for the speed limiter according to claim 3, characterized in that: The trigger handle (11) comprises a cross bar (14) and a vertical bar (15), the inner end of the cross bar (14) is fixed to the top end of the vertical bar (15), and the limit shaft (13) is mounted on the cross bar (14).
5. The manual triggering device for the speed limiter according to claim 4, characterized in that: The outer side wall of the vertical rod (15) is provided with a curved surface (16). When the cross bar (14) swings upward, there is a distance between the curved surface (16) and the trigger block (10). When the cross bar (14) swings downward, the curved surface (16) and the trigger block (10) abut against each other to trigger the speed limiter to operate.
6. The manual triggering device for the speed limiter according to claim 4, characterized in that: The inner corner of the trigger handle (11) is provided with a groove (17), the frame plate (2) is provided with a rope blocking rod (12), the axis of the rope blocking rod (12) is parallel to the axis of the rope wheel (4), the groove (17) is embedded in the outside of the rope blocking rod (12) to realize rotation connection, and the two are detachably connected.
7. The manual triggering device for the speed limiter according to claim 6, characterized in that: The frame plate (2) comprises a front plate and a rear plate, and the rope blocking rod (12) penetrates the front plate and the rear plate.
8. The manual triggering device for the speed limiter according to claim 4, characterized in that: The free end of the cross bar (14) extends out from the side surface of the upper shell (1) and the frame plate (2) on the same side.