A governor lifting force adjustment device

Abstract

The present invention relates to a governor pulling force adjusting device, comprising: a base; a governor mounting seat installed on the base for mounting a governor rope pulley; a bit for adjusting the limit screw of the governor rope pulley; a synchronous drive mechanism installed on the base for driving N bits to rotate synchronously to synchronously adjust the limit screws of the governor rope pulley, where N is an integer greater than 1; and a feed mechanism installed on the base for driving the bit to approach or move away from the governor mounting seat. The governor pulling force adjusting device of the present invention realizes synchronous adjustment of the limit screws of the governor rope pulley, making the adjustment of the governor pulling force more accurate and more efficient.

Description

Technical Field

[0001] The present invention belongs to the technical field of speed governors, and particularly relates to a speed governor pulling force adjusting device. Background Art

[0002] A speed governor is one of the safety control components for elevator safety protection; the magnitude of the pulling force of the speed governor directly determines whether the safety gear can quickly stop the elevator car on the guide rail.

[0003] The structures of speed governors are diverse. For example, the speed governor disclosed in the patent document with the publication number CN112573319A adjusts the friction force generated between the synchronous pulley and the friction plate by adjusting the limit screws, and further realizes the adjustment of the pulling force; however, the adjustment of the limit screws is currently mainly manual adjustment, with low efficiency, and the limit screws cannot be adjusted synchronously. Summary of the Invention

[0004] Based on the above-mentioned disadvantages and deficiencies existing in the prior art, one of the purposes of the present invention is to at least solve one or more of the above-mentioned problems existing in the prior art. In other words, one of the purposes of the present invention is to provide a speed governor pulling force adjusting device that meets one or more of the foregoing requirements.

[0005] In order to achieve the above-mentioned invention purpose, the present invention adopts the following technical solutions:

[0006] A speed governor pulling force adjusting device, comprising:

[0007] A base;

[0008] A speed governor mounting seat, mounted on the base and used for mounting a speed governor pulley;

[0009] A screwdriver bit, used for adjusting the limit screws of the speed governor pulley;

[0010] A synchronous driving mechanism, mounted on the base and used for driving N screwdriver bits to rotate synchronously to synchronously adjust the limit screws of the speed governor pulley; wherein, N is an integer greater than 1;

[0011] A feeding mechanism, mounted on the base and used for driving the screwdriver bit to approach or move away from the speed governor mounting seat.

[0012] As a preferred solution, the synchronous driving mechanism includes a base, a driving member, a driving gear, N driven gears, N rotating heads, N screwdriver bit fixing sleeves, a torque adjusting support and N torque springs. The base is mounted on a bottom plate through a first linear guide rail, the bottom plate is mounted on the base through a second linear guide rail, the torque adjusting support is mounted on the bottom plate, the driving gear and all the driven gears are rotatably mounted on the base, and all the rotating heads are rotatably mounted on the torque adjusting support;

[0013] The driving member is drivingly connected to the driving gear, and the driving gear meshes with each driven gear in sequence along its circumferential direction. Each driven gear is drivingly connected to a rotating head coaxially, and the driven gear can move axially along the rotating head. Each rotating head is drivingly connected to a bit fixing sleeve coaxially, and the bit fixing sleeve can move axially along the rotating head; each bit fixing sleeve is used for coaxially installing a bit.

[0014] A torsion spring is provided between each bit fixing sleeve and a rotating head. The torsion spring is sleeved outside the bit fixing sleeve; when the bit is axially forced to drive the bit fixing sleeve to move axially along the rotating head and abut against the driven gear, the torsion spring is compressed.

[0015] As a preferred solution, the feeding mechanism includes a first feeding cylinder. The driving end of the first feeding cylinder is drivingly connected to the base to drive the base to move relative to the torsion adjusting support, so as to drive the bit to approach or move away from the speed limiter mounting seat.

[0016] As a preferred solution, a second feeding cylinder is installed on the base. The driving end of the second feeding cylinder is drivingly connected to the bottom plate to drive the bottom plate to move relative to the base, so that the synchronous driving mechanism approaches or moves away from the speed limiter mounting seat.

[0017] As a preferred solution, the driving gear is of a cylindrical gear structure and sequentially includes a first bearing mounting section and a first gear section along its axial direction; the first bearing mounting section is mounted on the base through a first bearing;

[0018] The driven gear is of a cylindrical gear structure and sequentially includes a rotating head docking section, a second gear section and a second bearing mounting section along its axial direction. The rotating head docking section is drivingly connected to the adjacent end of its corresponding rotating head, and the rotating head docking section can move axially along the rotating head to drive the bit fixing sleeve to move axially along the rotating head, so as to make the bit move in the direction of tightening or loosening the limit screw; the second bearing mounting section is mounted on the base through a second bearing;

[0019] The second gear section meshes with the first gear section.

[0020] As a preferred solution, the first bearing includes a plurality of deep groove ball bearings sequentially arranged along the axial direction of the driving gear;

[0021] And / or, the second bearing includes a deep groove ball bearing and a tapered roller bearing sequentially arranged along the axial direction of the driven gear.

[0022] As a preferred solution, the speed limiter mounting seat includes a seat body and a positioning shaft installed on the seat body. The positioning shaft is used for coaxially installing a speed limiter rope wheel so that the speed limiter rope wheel rotates in cooperation with the positioning shaft.

[0023] As a preferred solution, the seat body is further provided with a clamping mechanism for restricting or releasing the rotation of the speed limiter rope wheel.

[0024] As a preferred solution, the clamping mechanism includes a driving cylinder and a clamping block drivingly connected to the driving head of the driving cylinder. Correspondingly, the centrifugal mechanism mounting plate installed on the speed limiter rope pulley has a clamping groove; the driving cylinder is used to drive the clamping block to be clamped in or disengaged from the clamping groove.

[0025] As a preferred solution, a limiting ring is installed on the seat body, and the speed limiter rope pulley is installed on the positioning shaft so that the centrifugal mechanism mounting plate fits against the limiting ring to realize the installation and positioning of the speed limiter rope pulley; the limiting ring has an avoidance groove to avoid the clamping block from being clamped in the clamping groove.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] The speed limiter pulling force adjusting device of the present invention realizes the synchronous adjustment of the limit screws of the speed limiter rope pulley, making the adjustment of the speed limiter pulling force more accurate and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the speed limiter pulling force adjusting device according to Embodiment 1 of the present invention;

[0029] Figure 2 is a schematic structural diagram of the speed limiter pulling force adjusting device according to Embodiment 1 of the present invention (wherein, the rope pulley of the speed limiter is omitted);

[0030] Figure 3 is a schematic structural diagram of the speed limiter pulling force adjusting device according to Embodiment 1 of the present invention from another perspective;

[0031] Figure 4 is a schematic structural diagram of the back of the speed limiter mounting seat according to Embodiment 1 of the present invention;

[0032] Figure 5 is a schematic structural diagram of the limiting ring according to Embodiment 1 of the present invention;

[0033] Figure 6 is a schematic structural diagram of the synchronous drive structure and the feed mechanism according to Embodiment 1 of the present invention;

[0034] Figure 7 is a schematic structural diagram of the synchronous drive structure and the feed mechanism according to Embodiment 1 of the present invention from another perspective;

[0035] Figure 8 is Figure 7 a sectional view taken along line A-A in

[0036] Figure 9 is Figure 7 a sectional view taken along line B-B in

[0037] Figure 10It is a schematic structural diagram of the driving gear in Embodiment 1 of the present invention;

[0038] Figure 11 It is a schematic structural diagram of the driven gear in Embodiment 1 of the present invention;

[0039] Figure 12 is Figure 11 The sectional view of the I-I part in Specific Embodiments

[0040] To more clearly illustrate the embodiments of the present invention, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings and other embodiments can be obtained.

[0041] Embodiment 1:

[0042] As Figure 1-12 shown, the overspeed governor pulling force adjusting device of this embodiment includes a base 1, an overspeed governor mounting seat 3, a screwdriver bit P, a synchronous drive mechanism K, and a feeding mechanism.

[0043] The overspeed governor mounting seat 3 includes a seat body 30 and a positioning shaft 31 mounted on the seat body 30. The positioning shaft 31 is used to coaxially mount the overspeed governor whose pulling force is to be adjusted, so that the overspeed governor rope pulley a rotates and fits on the positioning shaft 31; wherein, a limiting ring 32 is adhesively mounted on the seat body 30 for positioning the overspeed governor; in addition, a clamping mechanism is provided on the seat body 30 for restricting or releasing the rotation of the rope pulley of the overspeed governor; specifically, as Figure 3 and 4 shown, the clamping mechanism includes a driving cylinder 16 and a clamping block 17 drivingly connected to the driving head of the driving cylinder. Correspondingly, as Figure 2 shown, the centrifugal mechanism mounting plate b of the overspeed governor has several circumferentially distributed slots b0, as Figure 5 shown, the limiting ring 32 has an avoidance groove 320 designed corresponding to the clamping block 17 for avoiding the movement of the clamping block; the driving cylinder 16 is used to drive the clamping block 17 to be clamped in or disengaged from the slot. Among them, the clamping block 17 and the driving cylinder 16 are respectively located on both sides of the seat body 30. The clamping block 17 is vertically connected to the driving head of the driving cylinder through a connecting rod 18. The seat body 30 has a travel hole 300 for avoiding the movement of the connecting rod 18, and the connecting rod 18 passes through the travel hole 300.

[0044] The synchronous drive mechanism K and the feed mechanism of this embodiment are installed on the base 1. The synchronous drive mechanism K is used to drive the four bit heads P to rotate synchronously. The feed mechanism is used to drive all the bit heads to approach or move away from the speed limiter installed on the speed limiter mounting seat, so as to synchronously adjust the four limit screws S of the speed limiter, realize the adjustment of the friction force generated between the rope pulley and the friction plate of the speed limiter, and thus improve the efficiency of adjusting the pulling force of the speed limiter.

[0045] As Figure 6-9 shown, the synchronous drive mechanism includes a base 19 and a drive motor 20, a driving wheel 21, a synchronous belt 22, a driven wheel 23, a driving gear 24, four driven gears 25, four rotating heads 26, a torque adjusting support 27, four torsion springs 28 and four bit head fixing sleeves 29 installed on the base 19. Both sides of the base 19 are installed on a bottom plate D through the first linear guide E respectively; that is, there are two bottom plates D, which are located on both sides of the base 19 respectively; each bottom plate D is installed on the base 1 through the second linear guide 34, and the second linear guide 34 is parallel to the first linear guide E to ensure the straightness of the movement; the torque adjusting support 27 is installed on the two bottom plates D, the driving gear 24 and all the driven gears 25 are rotatably installed on the base 19, and all the rotating heads 26 are rotatably installed on the torque adjusting support 27.

[0046] Specifically, the motor shaft of the drive motor 20 is coaxially drivingly connected to the driving wheel 21. The driving wheel 21 and the driven wheel 23 are driven by the synchronous belt 22. The driven wheel 23 is coaxially drivingly connected to the driving gear 24. The four driven gears 25 are evenly distributed along the circumferential direction of the driving gear 24, and all the driven gears 25 are meshed with the driving gear 24. Each driven gear 25 is coaxially drivingly connected to its corresponding rotating head 26 and the driven gear 25 can move axially along the rotating head 26 to realize axial mobility and radial linkage; among them, as Figure 10 shown, the driving gear 24 is of a cylindrical gear structure and sequentially includes a driven wheel linkage section 24a, a first bearing installation section 24b and a first gear section 24c along its axial direction. The driven wheel linkage section 24a is coaxially drivingly connected to the driven wheel 23. The first bearing installation section 24b is installed on the base 19 through two deep groove ball bearings distributed at an axial distance; as Figure 11 and 12As shown, the driven gear 25 has a cylindrical gear structure, and sequentially includes a rotating head docking section 25a, a second gear section 25b, and a second bearing mounting section 25c along its axial direction. The rotating head docking section 25a is drivingly connected to the adjacent end of its corresponding rotating head 26, and the rotating head docking section can move axially along the rotating head 26 to drive the bit fixing sleeve to move axially along the rotating head, so as to realize the movement of the bit P in the direction of tightening or loosening the limit screw S. The docking structure between the rotating head docking section and the rotating head can adopt a spline structure or a hexagonal cross-section structure, which can not only realize synchronous rotation but also axial movement. The specific structure will not be elaborated here; among them, the end of the driven gear 25 corresponding to the rotating head docking section 25a has a concave cavity 25d as the stroke space of the bit fixing sleeve; the second bearing mounting section 25c is mounted on the base 19 through deep groove ball bearings Z1 and tapered roller bearings Z2 distributed at axial intervals, and the tapered roller bearing Z2 is adjacent to the second gear section 25b of the driven gear. The second gear section 25b of the driven gear meshes with the first gear section 24c of the driving gear to realize synchronous transmission.

[0047] In addition, the rotating head 26 is mounted on the torque adjusting support 27 through a bearing Z3, and the bit fixing sleeve 29 is drivingly connected coaxially with its corresponding rotating head 26. Among them, the docking structure between the bit fixing sleeve 29 and the rotating head 26 can adopt a spline structure or a hexagonal cross-section structure, which can not only realize synchronous rotation but also axial movement. The specific structure will not be elaborated here; the bit P is coaxially mounted within the bit fixing sleeve 29, and the end of the bit P protrudes outside the bit fixing sleeve so as to tighten or loosen the limit screw; the torsion spring 28 is mounted between the bit fixing sleeve 29 and its corresponding rotating head 26, and the torsion spring 28 is sleeved outside the bit fixing sleeve 29; when the bit P moves axially along the rotating head 26 under the action of an axial external force (i.e., the force generated by the bit P abutting against the limit screw) and drives the bit fixing sleeve 29 to abut against the driven gear 25, the torsion spring 28 is compressed during this process.

[0048] The feeding mechanism of this embodiment is mounted on the torque adjusting support 27. The feeding mechanism adopts a first feeding cylinder F, and the driving end of the first feeding cylinder F is drivingly connected to the base 19 to realize feeding while the bit P rotates, so as to tighten or loosen the limit screw.

[0049] A second feeding cylinder 33 is also mounted on the base 1 of this embodiment, and the driving end of the second feeding cylinder 33 is drivingly connected to the bottom plate D to drive the bottom plate D to move relative to the base 1, so that the overall synchronous driving mechanism K approaches or moves away from the speed limiter mounting seat 3 to provide sufficient space for loading and unloading the speed limiter.

[0050] Embodiment 2:

[0051] The difference between the speed limiter pulling force adjusting device of this embodiment and that of Embodiment 1 is:

[0052] The number of the bit heads is not limited to the four described in Embodiment 1, and can also be three, five, etc., and is specifically adjusted according to the structure of the actual speed limiter to meet the requirements of different application scenarios;

[0053] Other structures can refer to Embodiment 1.

[0054] Embodiment 3:

[0055] The difference between the speed limiter pulling force adjusting device of this embodiment and that of Embodiment 1 lies in:

[0056] The setting of the second feeding cylinder is omitted, and the speed limiter mounting seat is designed to be movable and can move along the base to meet the requirements of different application scenarios;

[0057] Other structures can refer to Embodiment 1.

[0058] The above is only a detailed description of the preferred embodiments and principles of the present invention. For those of ordinary skill in the art, according to the idea provided by the present invention, there will be changes in the specific implementation manners, and these changes should also be regarded as the protection scope of the present invention.

Claims

1. A governor pulling force adjustment device, characterized in that, Comprising: Base; Speed limiter mounting base, mounted on the base for mounting the speed limiter rope pulley; Bit, used to adjust the limit screw of the speed limiter rope pulley; The synchronous drive mechanism is installed on the base and is used to drive N a plurality of bit heads to rotate synchronously so as to synchronously adjust the limit screws of the governor rope pulley; wherein, N is an integer greater than 1; Feeding mechanism, mounted on the base for driving the bit to approach or move away from the speed limiter mounting base; The synchronous drive mechanism includes a base, a driving member, a driving gear, N driven gears, N rotating heads, N bit fixing sleeves, a torque adjusting support and N a torsion spring. The base is installed on a bottom plate through a first linear guide rail, the bottom plate is installed on a base through a second linear guide rail, the torque adjusting support is installed on the bottom plate, the driving gear and all the driven gears are rotatably installed on the base, and all the rotating heads are rotatably installed on the torque adjusting support; The driving member is drivingly connected to the driving gear, the driving gear is sequentially meshed with each driven gear along its circumferential direction, each driven gear is drivingly connected to a rotating head coaxially and the driven gear can move axially along the rotating head, each rotating head is drivingly connected to a bit fixing sleeve coaxially and the bit fixing sleeve can move axially along the rotating head; each bit fixing sleeve is used for coaxially mounting a bit; A torsion spring is provided between each bit fixing sleeve and a rotating head, and the torsion spring is sleeved outside the bit fixing sleeve; when the bit is driven by an axial external force to drive the bit fixing sleeve to move axially along the rotating head and abut against the driven gear, the torsion spring is compressed; The feeding mechanism includes a first feeding cylinder, and the driving end of the first feeding cylinder is drivingly connected to the base to drive the base to move relative to the torsion adjusting support, so as to drive the bit to approach or move away from the speed limiter mounting base.

2. The overspeed governor pulling force adjusting device according to claim 1, characterized in that, A second feeding cylinder is mounted on the base, and the driving end of the second feeding cylinder is drivingly connected to the bottom plate to drive the bottom plate to move relative to the base, so that the synchronous driving mechanism approaches or moves away from the speed limiter mounting base.

3. A speed limiter pulling force adjustment device according to claim 1, characterized in that, The driving gear is of a cylindrical gear structure and sequentially includes a first bearing mounting section and a first gear section along its axial direction; the first bearing mounting section is mounted on the base through a first bearing; The driven gear is of a cylindrical gear structure and sequentially includes a rotating head docking section, a second gear section and a second bearing mounting section along its axial direction. The rotating head docking section is drivingly connected to the adjacent end of its corresponding rotating head, and the rotating head docking section can move axially along the rotating head to drive the bit fixing sleeve to move axially along the rotating head, so as to realize the movement of the bit in the direction of tightening or loosening the limit screw; the second bearing mounting section is mounted on the base through a second bearing; The second gear section meshes with the first gear section.

4. The speed limiter pulling force adjustment device according to claim 3, characterized in that, The first bearing includes a plurality of deep groove ball bearings sequentially arranged along the axial direction of the driving gear; And / or, the second bearing includes a deep groove ball bearing and a tapered roller bearing sequentially arranged along the axial direction of the driven gear.

5. A governor pulling force adjustment device according to claim 1, characterized in that, The speed limiter mounting base includes a seat body and a positioning shaft mounted on the seat body. The positioning shaft is used for coaxially mounting the speed limiter rope pulley so that the speed limiter rope pulley rotates in cooperation with the positioning shaft.

6. The speed limiter pulling force adjustment device according to claim 5, characterized in that, The seat body is further provided with a clamping mechanism for restricting or releasing the rotation of the speed limiter rope pulley.

7. A speed limiter pulling force adjustment device according to claim 6, characterized in that, The clamping mechanism includes a driving cylinder and a clamping block drivingly connected to the driving head of the driving cylinder. Correspondingly, the centrifugal mechanism mounting plate mounted on the speed limiter rope pulley has a clamping groove; the driving cylinder is used for driving the clamping block to be clamped in or disengaged from the clamping groove.

8. A governor pulling force adjustment device according to claim 7, characterized in that, A limiting ring is mounted on the seat body, and the speed limiter rope pulley is mounted on the positioning shaft so that the centrifugal mechanism mounting plate fits against the limiting ring to realize the installation positioning of the speed limiter rope pulley; the limiting ring has an avoidance groove to avoid the clamping block from being clamped in the clamping groove.

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