CN215797762U - Overspeed governor is carried tensile testing arrangement - Google Patents
Overspeed governor is carried tensile testing arrangement Download PDFInfo
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- CN215797762U CN215797762U CN202121580130.9U CN202121580130U CN215797762U CN 215797762 U CN215797762 U CN 215797762U CN 202121580130 U CN202121580130 U CN 202121580130U CN 215797762 U CN215797762 U CN 215797762U
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Abstract
The utility model relates to a speed limiter pulling force testing device which comprises a rack, a steel wire rope, a balancing weight, a speed limiter mounting seat, a driving motor, a first guide wheel, a first guide assembly and a second guide assembly, wherein the driving motor and the first guide wheel are positioned above the speed limiter mounting seat, and the first guide assembly and the second guide assembly are positioned below the speed limiter mounting seat; one end of a steel wire rope is in driving connection with a driving motor, the steel wire rope sequentially winds through a first guide assembly, a rope wheel of a speed limiter arranged on a speed limiter mounting seat, a second guide assembly, a first guide wheel and the other end of the steel wire rope to be connected with a balancing weight, and the balancing weight is positioned below the first guide wheel; and a tension sensor is connected in series on the steel wire rope. According to the utility model, the driving motor and the first guide wheel are arranged on the speed limiter mounting seat, the two guide assemblies are arranged below the speed limiter mounting seat, and the balancing weight is arranged below the first guide wheel, so that the structure is compact while the sufficient stroke of the balancing weight is realized, and the bidirectional tension lifting test is conveniently realized.
Description
Technical Field
The utility model belongs to the technical field of elevator accessories, and particularly relates to a speed limiter lifting force testing device.
Background
A speed governor is one of safety control means for elevator safety protection, and is disclosed in patent document No. CN112573319A, for example. The lifting force of the speed limiter directly determines whether the safety tongs can rapidly stop the elevator car on the guide rail. Therefore, the test method is particularly important for the hundred percent pull-up force test of the speed limiter after leaving the factory.
At present, there are corresponding overspeed governor lifting force testing devices, for example: patent document No. CN205575314U discloses a lifting force test platform for elevator speed limiter. But the existing speed limiter pulling force test device can not meet the requirement of rapidly testing the bidirectional pulling force of the bidirectional speed limiter. In addition, the existing speed limiter lifting force testing device does not have the function of carrying out automatic adjustment on the lifting force to meet the functional requirements when the lifting force is insufficient, and only can be manually operated, so that the online test and the production efficiency are low.
SUMMERY OF THE UTILITY MODEL
Based on the above-mentioned shortcomings and drawbacks of the prior art, it is an object of the present invention to at least solve one or more of the above-mentioned problems of the prior art, in other words, to provide a speed limiter pull-up testing device that meets one or more of the above-mentioned needs.
In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:
a speed limiter lifting force testing device comprises a rack, a steel wire rope, a balancing weight, a speed limiter mounting seat, a driving motor, a first guide wheel, a first guide assembly and a second guide assembly, wherein the speed limiter mounting seat, the driving motor, the first guide wheel, the first guide assembly and the second guide assembly are mounted on the rack; one end of a steel wire rope is in driving connection with a driving motor, the steel wire rope sequentially winds through a first guide assembly, a rope wheel of a speed limiter arranged on a speed limiter mounting seat, a second guide assembly, a first guide wheel and the other end of the steel wire rope to be connected with a balancing weight, and the balancing weight is positioned below the first guide wheel; and a tension sensor is connected in series on the steel wire rope.
As the preferred scheme, the frame is equipped with the direction stand respectively corresponding to the both sides of balancing weight, and the balancing weight goes up and down to cooperate in the direction stand.
As a preferred scheme, an upper travel switch and a lower travel switch are respectively arranged on the machine frame and used for controlling the lifting travel of the balancing weight.
As a preferred scheme, the frame is provided with a counterweight cushion block for supporting a counterweight block which moves to a lower travel switch triggering stopping position.
Preferably, the first guide assembly includes a plurality of first rollers disposed in sequence along the extending direction of the steel wire rope, and the second guide assembly includes a plurality of second rollers disposed in sequence along the extending direction of the steel wire rope.
Preferably, the first guide assembly and the second guide assembly are symmetrical to each other.
As the preferred scheme, the speed limiter lifting force testing device further comprises a rotary encoder used for judging whether the balancing weight goes up or down.
As a preferred scheme, the speed limiter mounting seat comprises a seat body and a positioning shaft mounted on the seat body, wherein the positioning shaft is used for coaxially mounting the speed limiter so that a rope wheel of the speed limiter is matched with the positioning shaft in a rotating manner; the base body is also provided with a clamping mechanism for limiting or releasing the limitation of the rotation of the rope wheel of the speed limiter.
As a preferred scheme, the clamping mechanism comprises a driving cylinder and a clamping block in driving connection with a driving head of the driving cylinder, and correspondingly, a centrifugal mechanism mounting plate of the speed limiter is provided with a clamping groove; the driving cylinder is used for driving the clamping block to be clamped in the clamping groove or separated from the clamping groove.
Preferably, the frame is provided with a synchronous driving mechanism and a feeding mechanism, the synchronous driving mechanism is used for driving the plurality of screwdriver bits to rotate synchronously, and the feeding mechanism is used for driving the screwdriver bits to approach or leave the speed limiter arranged on the speed limiter mounting seat so as to synchronously adjust the limiting screws of the speed limiter and realize the adjustment of the friction force generated between the rope wheel and the friction plate of the speed limiter.
Compared with the prior art, the utility model has the beneficial effects that:
according to the speed limiter pulling force testing device, the driving motor and the first guide wheel are arranged on the speed limiter mounting seat, the first guide assembly and the second guide assembly are arranged below the speed limiter mounting seat, and the balancing weight is arranged below the first guide wheel, so that the overall structure is compact while the balancing weight has enough stroke, and the one-way (or two-way) pulling force of the speed limiter can be tested on line during assembly production.
Drawings
Fig. 1 is a schematic structural diagram of a speed governor lifting force testing device in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a speed governor lifting force testing device (a side plate is omitted) in embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a speed governor lifting force testing device according to embodiment 1 of the present invention (a frame and a side plate are omitted);
FIG. 4 is a front view of the structure shown in FIG. 3;
FIG. 5 is a rear view of the structure shown in FIG. 3;
fig. 6 is a schematic structural view of a governor mounting base, a synchronous drive mechanism, and a feed mechanism according to embodiment 1 of the present invention;
fig. 7 is a schematic structural view of a governor mounting seat, a synchronous drive mechanism, and a feed mechanism according to embodiment 1 of the present invention (in which a sheave is omitted from the governor);
fig. 8 is a schematic structural view of the governor mounting base, the synchronous drive mechanism, and the feed mechanism in another view according to embodiment 1 of the present invention;
fig. 9 is a back structural schematic view of a governor mounting seat according to embodiment 1 of the present invention;
FIG. 10 is a schematic structural view of a retainer ring according to embodiment 1 of the present invention;
FIG. 11 is a schematic structural view of a synchronous drive structure and a feed mechanism according to embodiment 1 of the present invention;
FIG. 12 is a schematic structural view of a synchronous driving structure and a feeding mechanism in another view according to embodiment 1 of the present invention;
FIG. 13 is a cross-sectional view of section A-A in FIG. 12;
FIG. 14 is a cross-sectional view of section B-B of FIG. 12;
FIG. 15 is a schematic structural view of a drive gear according to embodiment 1 of the present invention;
fig. 16 is a schematic structural view of a driven gear of embodiment 1 of the utility model;
fig. 17 is a sectional view of the portion I-I in fig. 16.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain the embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the utility model, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
Example 1:
as shown in fig. 1 to 17, the speed governor lifting force testing device of this embodiment includes a frame 1, a steel wire rope 2, a speed governor mounting base 3, a first driving motor 4, a first guide wheel 5, a first guide assembly, a second guide assembly, a counterweight 6, a tension sensor 7, a guide upright post 8, a guide pulley 9, an upper travel switch 10, a lower travel switch 11, a counterweight cushion block 12, a rotary encoder 13, a clamping mechanism, a synchronous driving mechanism K, and a feeding mechanism.
The frame 1 is a frame structure formed by building a plurality of cross beams and stand columns and used for mounting all components of the testing device. Wherein, the middle part of frame 1 is installed the operation panel 100, and frame 1 is corresponding to the position of wire rope and balancing weight and installs confined curb plate 110 all around.
The speed governor mounting seat 3 is mounted on an operation table 100 in the middle of the rack 1, and the first driving motor 4 and the first guide wheel 5 are mounted at the top of the rack 1, so that the first driving motor 4 and the first guide wheel 5 are located above the speed governor mounting seat 3; the first guide assembly and the second guide assembly are arranged at the top of the frame 1, so that the first guide assembly and the second guide assembly are positioned below the speed limiter mounting seat.
One end of a steel wire rope 2 is in driving connection with a motor shaft of a first driving motor 4, the steel wire rope 2 sequentially winds through a first guide assembly, a rope wheel a of a speed limiter arranged on a speed limiter mounting seat 3, a second guide assembly, a first guide wheel 5 and the other end of the steel wire rope to be connected with a balancing weight 6, and the balancing weight 6 is located below the first guide wheel 5; wherein, a tension sensor 7 is connected in series on the steel wire rope 2, namely, a certain part of the steel wire rope is disconnected and is butted by adopting the tension sensor so as to detect the lifting force of the speed limiter; the tension sensor 7 is positioned on the steel wire rope between the motor shaft of the first driving motor and the first guide assembly.
The frame 1 of this embodiment is last to be equipped with guide post 8 respectively corresponding to the both sides of balancing weight 6, and balancing weight 6 goes up and down to cooperate in guide post. Specifically, guide pulleys 9 are respectively installed on two sides of the counterweight block 6, and when the counterweight block moves upwards or downwards, the guide pulleys 9 are in rolling fit with the corresponding guide upright posts 8.
The frame 1 of this embodiment is provided with an upper travel switch 10 and a lower travel switch 11, respectively, for controlling the lifting travel of the counterweight block 6. Namely, when the counterweight block 6 moves upwards to trigger the upper travel switch 10, the first driving motor 4 is controlled to stop or rotate reversely; when the counterweight block 6 moves downwards to trigger the lower travel switch 11, the first driving motor 4 is controlled to stop or rotate reversely. Wherein, the upper travel switch 10 and the lower travel switch 11 adopt a combination of a correlation sensor or a photoelectric sensor and a trigger piece.
In addition, the frame 1 of this embodiment is provided with a counterweight cushion block 12 for supporting a counterweight block that moves to a lower travel switch triggering stop position.
As shown in fig. 3 and 4, the first guide assembly of this embodiment includes two first large rollers 14a and a plurality of first small rollers 14b sequentially arranged along the extending direction of the steel wire rope, the second guide assembly includes two second large rollers and a plurality of second small rollers 15b sequentially arranged along the extending direction of the steel wire rope, the first large rollers 14a and the second large rollers are symmetrically installed on two sides of the installation base 14, the first small rollers 14b and the second small rollers 15b are both installed on the front side of the installation base 14, and the first small rollers 14b and the second small rollers 15b are symmetrically distributed, so that the structures of the first guide assembly and the second guide assembly are mutually symmetric, and the installation base 14 is fixedly installed on the rack 1. As shown in fig. 5, a rotary encoder 13 is coaxially installed corresponding to the first small roller or the second small roller, and based on detection of positive rotation or negative rotation of the first small roller or the second small roller, the counterweight block 6 is judged to move upwards or downwards, so that ascending or descending of the elevator car is simulated, and bidirectional tension lifting test is realized.
As shown in fig. 6 to 10, the governor mounting base 3 of the present embodiment includes a base body 30 and a positioning shaft 31 mounted on the base body 30, the positioning shaft 31 being used to coaxially mount the governor so that the sheave a of the governor is rotatably fitted to the positioning shaft 31; wherein, the seat body 30 is provided with a spacing ring 32 for installing and positioning the speed limiter; in addition, the seat body 30 is also provided with a clamping mechanism for limiting or releasing the limitation of the rotation of the rope wheel of the speed limiter; specifically, the clamping mechanism comprises a driving cylinder 16 and a fixture block 17 in driving connection with a driving head of the driving cylinder, correspondingly, a centrifugal mechanism mounting plate b of the speed limiter is provided with a plurality of clamping grooves b0 distributed circumferentially, and the limiting ring 32 is provided with an avoiding groove 320 designed corresponding to the fixture block 17 so as to avoid the movement of the fixture block; the driving cylinder 16 is used for driving the clamping block 17 to be clamped in the clamping groove or separated from the clamping groove. The fixture block 17 and the driving cylinder 16 are respectively located at two sides of the seat body 30, the fixture block 17 is vertically connected with a driving head of the driving cylinder through the connecting rod 18, the seat body 30 is provided with a stroke hole 300 avoiding the movement of the connecting rod 18, and the connecting rod 18 penetrates through the stroke hole 300.
The synchronous driving mechanism and the feeding mechanism are further installed on the frame 1, the synchronous driving mechanism is used for driving the four screwdriver heads P to rotate synchronously, the feeding mechanism is used for driving all the screwdriver heads to be close to or far away from the speed limiter installed on the speed limiter installation seat, the four limiting screws S of the speed limiter are synchronously adjusted, the adjustment of friction force generated between a rope wheel and a friction plate of the speed limiter is achieved, and therefore the efficiency and the adjustment precision of the lifting force adjustment of the speed limiter are improved.
Specifically, as shown in fig. 11 to 14, the synchronous driving mechanism includes a base 19, a second driving motor 20 mounted on the base 19, 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 fixing sleeves 29, wherein two sides of the base 19 are respectively mounted on a bottom plate D through a first linear guide E; namely, two bottom plates D are respectively positioned at two sides of the base 19; each bottom plate D is arranged on the base 1 through a second linear guide rail 34, and the second linear guide rail 34 is parallel to the first linear guide rail E, so that the straightness of movement is ensured; the torque-adjusting support 27 is mounted on the two bottom plates D, the driving gear 24 and all the driven gears 25 are rotatably mounted on the base 19, and all the rotating heads 26 are rotatably mounted on the torque-adjusting support 27.
Specifically, a motor shaft of the second driving motor 20 is coaxially and drivingly connected with 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 and drivingly connected with the driving gear 24, the four driven gears 25 are uniformly distributed along the circumferential direction of the driving gear 24, all the driven gears 25 are meshed with the driving gear 24, each driven gear 25 is coaxially and drivingly connected with the corresponding rotating head 26, and the driven gear 25 can move along the axial direction of the rotating head 26, so that the movable axial and radial linkage is realized; as shown in fig. 15, the driving gear 24 is 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 the axial direction thereof, the driven wheel linkage section 24a is coaxially and drivingly connected with the driven wheel 23, and the first bearing installation section 24b is installed on the base 19 through two deep groove ball bearings distributed at an axial distance; as shown in fig. 16 and 17, the driven gear 25 is a cylindrical gear structure, and sequentially includes a rotary head butt-joint section 25a, a second gear section 25b and a second bearing installation section 25c along the axial direction thereof, the rotary head butt-joint section 25a is in driving connection with the adjacent end portion of the rotary head 26 corresponding thereto, and the rotary head butt-joint section can move along the axial direction of the rotary head 26 to link the axial movement of the bit fixing sleeve along the rotary head, so that the bit P moves in the direction of screwing or unscrewing the limit screw S, the rotary head butt-joint section and the butt-joint structure of the rotary head can adopt a spline structure fit or have a hexagonal cross section, so that not only synchronous rotation but also axial movement can be realized, and the specific structure is not repeated herein; wherein, the driven gear 25 has a concave cavity 25d corresponding to the end of the butt-joint section 25a of the rotary head, and the concave cavity is used as a stroke space of the batch head fixing sleeve; the second bearing mounting section 25c is mounted on the base 19 by means of axially spaced deep groove ball bearings Z1 and tapered roller bearings Z2, the tapered roller bearings Z2 being adjacent the second gear section 25b of the driven gear. The second gear section 25b of the driven gear is meshed with the first gear section 24c of the driving gear, so that synchronous transmission is realized.
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 coaxially and drivingly connected with the corresponding rotating head 26, wherein the butt joint structure of the bit fixing sleeve 29 and the rotating head 26 may adopt a spline structure fit or a hexagonal structure in cross section, which can realize both synchronous rotation and axial movement, and the specific structure is not described herein again; the screwdriver bit P is coaxially arranged in the screwdriver bit fixing sleeve 29, and the end part of the screwdriver bit P protrudes out of the screwdriver bit fixing sleeve so as to screw or unscrew the limiting screw; the torsion spring 28 is arranged between the bit fixing sleeve 29 and the corresponding rotating head 26, and the torsion spring 28 is sleeved outside the bit fixing sleeve 29; when the bit P is acted by an axial external force (i.e. the force generated by the abutment of the bit P and the limit screw) to link the bit fixing sleeve 29 to move along the axial direction of the rotating head 26 and abut against the driven gear 25, the torsion spring 28 is compressed in the process.
The feeding mechanism of this embodiment is installed on the torque adjusting support 27, and the feeding mechanism adopts the first feeding cylinder F, and the drive end of the first feeding cylinder F is in driving connection with the base 19, and the feeding is realized while the batch head P rotates, so as to screw or unscrew the limit screw.
The base 1 of the embodiment is also provided with a second feeding cylinder 33, and the driving end of the second feeding cylinder 33 is in driving connection with the base plate D to drive the base plate D to move relative to the base 1, so that the whole synchronous driving mechanism K is close to or far away from the speed limiter mounting seat 3, and a sufficient space is provided for mounting and dismounting the speed limiter.
Example 2:
the speed governor lifting force testing device of the embodiment is different from that of the embodiment 1 in that:
the number of the batch heads is not limited to four as described in embodiment 1, and may be three, five or the like, and the adjustment is specifically performed according to the structure of the actual speed limiter, so as to meet the requirements of different application scenarios;
other structures can refer to embodiment 1.
Example 3:
the speed governor lifting force testing device of the embodiment is different from that of the embodiment 1 in that:
the synchronous driving mechanism and the feeding mechanism are omitted, and the requirements of different application scenes are met;
other structures can refer to embodiment 1.
Example 4:
the speed governor lifting force testing device of the embodiment is different from that of the embodiment 1 in that:
the installation position of the rotary encoder is not limited to the first small roller or the second small roller, and the rotary encoder can be installed on the first driving motor or other positions capable of realizing uplink and downlink detection, or the rotary encoder is omitted, so that the requirements of different application scenes are met;
other structures can refer to embodiment 1.
Example 5:
the speed governor lifting force testing device of the embodiment is different from that of the embodiment 1 in that:
a bottom plate, a first linear guide rail and a first feeding cylinder which are correspondingly arranged on the synchronous driving mechanism are omitted, feeding is directly achieved through the feeding mechanism, the screwdriver head is directly screwed or unscrewed on the limiting screw, the structure is simplified, and the requirements of different application scenes are met.
The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.
Claims (10)
1. A speed limiter lifting force testing device is characterized by comprising a rack, a steel wire rope, a balancing weight, a speed limiter mounting seat, a driving motor, a first guide wheel, a first guide assembly and a second guide assembly, wherein the speed limiter mounting seat, the driving motor, the first guide wheel, the first guide assembly and the second guide assembly are mounted on the rack; one end of a steel wire rope is in driving connection with a driving motor, the steel wire rope sequentially winds through a first guide assembly, a rope wheel of a speed limiter arranged on a speed limiter mounting seat, a second guide assembly, a first guide wheel and the other end of the steel wire rope to be connected with a balancing weight, and the balancing weight is positioned below the first guide wheel; and a tension sensor is connected in series on the steel wire rope.
2. The speed limiter pulling force testing device of claim 1, wherein guide columns are respectively arranged on the frame corresponding to two sides of the balancing weight, and the balancing weight is matched with the guide columns in a lifting mode.
3. The speed limiter pulling force testing device according to claim 2, wherein an upper travel switch and a lower travel switch are respectively arranged on the frame and used for controlling the lifting travel of the balancing weight.
4. The speed limiter pulling force testing device of claim 3, wherein a counterweight block is arranged on the frame and used for supporting a counterweight block which moves to a lower stroke switch triggering stopping position.
5. The speed limiter pulling force testing device of claim 1, wherein the first guiding assembly comprises a plurality of first rollers which are sequentially arranged along the extending direction of the steel wire rope, and the second guiding assembly comprises a plurality of second rollers which are sequentially arranged along the extending direction of the steel wire rope.
6. The speed governor lifting force testing device of claim 1 or 5, wherein the first guide assembly and the second guide assembly are symmetrical in structure.
7. The speed limiter pulling force testing device of claim 1, further comprising a rotary encoder for judging whether the balancing weight moves upwards or downwards.
8. The speed limiter pulling force testing device of claim 1, wherein the speed limiter mounting base comprises a base body and a positioning shaft mounted on the base body, and the positioning shaft is used for coaxially mounting the speed limiter so that a rope wheel of the speed limiter is in running fit with the positioning shaft; the base body is also provided with a clamping mechanism for limiting or releasing the limitation of the rotation of the rope wheel of the speed limiter.
9. The speed limiter pulling force testing device of claim 8, wherein the clamping mechanism comprises a driving cylinder and a clamping block in driving connection with a driving head of the driving cylinder, and correspondingly, a centrifugal mechanism mounting plate of the speed limiter is provided with a clamping groove; the driving cylinder is used for driving the clamping block to be clamped in the clamping groove or separated from the clamping groove.
10. The speed limiter pulling force testing device according to claim 1, wherein a synchronous driving mechanism and a feeding mechanism are mounted on the frame, the synchronous driving mechanism is used for driving a plurality of bits to rotate synchronously, and the feeding mechanism is used for driving the bits to be close to or far away from the speed limiter mounted on the speed limiter mounting seat so as to synchronously adjust limiting screws of the speed limiter, thereby realizing adjustment of friction force generated between a rope wheel and a friction plate of the speed limiter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121580130.9U CN215797762U (en) | 2021-07-13 | 2021-07-13 | Overspeed governor is carried tensile testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121580130.9U CN215797762U (en) | 2021-07-13 | 2021-07-13 | Overspeed governor is carried tensile testing arrangement |
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| Publication Number | Publication Date |
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| CN215797762U true CN215797762U (en) | 2022-02-11 |
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| CN202121580130.9U Active CN215797762U (en) | 2021-07-13 | 2021-07-13 | Overspeed governor is carried tensile testing arrangement |
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- 2021-07-13 CN CN202121580130.9U patent/CN215797762U/en active Active
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