CN211876989U - Stay cord stroke measuring device and wire rope traction equipment - Google Patents
Stay cord stroke measuring device and wire rope traction equipment Download PDFInfo
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- CN211876989U CN211876989U CN202020868026.9U CN202020868026U CN211876989U CN 211876989 U CN211876989 U CN 211876989U CN 202020868026 U CN202020868026 U CN 202020868026U CN 211876989 U CN211876989 U CN 211876989U
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Abstract
The utility model discloses a stay cord stroke measurement device and wire rope pulling equipment, stay cord stroke measurement device, include: the device comprises a mounting bracket, a measuring pulley, a pinch roller mechanism and an angular displacement sensor, wherein the measuring pulley is rotatably arranged on the mounting bracket; the pressing wheel mechanism is rotatably connected with the mounting bracket and comprises a plurality of pressing wheel mechanisms arranged in the circumferential direction of the measuring pulley, and the plurality of pressing wheel mechanisms are configured to press the pull rope wound on the measuring pulley and enable the winding wrap angle of the pull rope on the measuring pulley to be not less than 80 degrees; the angular displacement sensor is respectively matched with the measuring pulley and the mounting bracket to detect the rotating angle of the measuring pulley. According to the utility model discloses stay cord stroke measurement device can improve the stroke measurement accuracy of stay cord.
Description
Technical Field
The utility model relates to a measure technical field, in particular to stay cord stroke measuring device and have its wire rope pulling equipment.
Background
For equipment such as winches, cranes, oil field well piggers and well drilling machines which use steel wire ropes to pull actuating mechanisms, the length of the steel wire ropes is required to be measured in real time in order to ensure that the actuating mechanisms lifted by the steel wire ropes can accurately reach set target positions, and therefore the descending position accuracy of the actuating mechanisms is improved, and therefore the development of a steel wire rope real-time measuring system is not only necessary, but also has a great engineering application prospect.
In the related art, the measurement of the length of the steel wire rope is mainly divided into two modes of manual measurement and automatic measurement. The manual measurement is mainly carried out by utilizing devices such as a steel tape and a long bamboo pole, the method is low in measurement precision and is not suitable for working conditions such as large descending depth of a steel wire rope or severe environments such as underground and the like. The automatic measuring method mainly comprises a rope pulling type, and the rope head is fixed at the end of the actuating mechanism to move along with the actuating mechanism when the rope pulling type length measuring sensor works, so that the measuring depth is limited greatly, the depth is too large, the pulling length is too long, the weight of the stretching disc is too heavy, and a rope is easy to twist together with a steel wire rope under severe working conditions or even the rope is broken, so that the application of the rope pulling type displacement measuring sensor is limited.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a stay cord stroke measurement device can improve the stroke measurement accuracy of stay cord.
Another object of the utility model is to provide a wire rope pulling equipment.
According to the utility model discloses stay cord stroke measurement device, include: the device comprises a mounting bracket, a measuring pulley, a pinch roller mechanism and an angular displacement sensor, wherein the measuring pulley is rotatably arranged on the mounting bracket; the pressing wheel mechanism is rotatably connected with the mounting bracket and comprises a plurality of pressing wheel mechanisms arranged in the circumferential direction of the measuring pulley, and the plurality of pressing wheel mechanisms are configured to press the pull rope wound on the measuring pulley and enable the winding wrap angle of the pull rope on the measuring pulley to be not less than 80 degrees; the angular displacement sensor is respectively matched with the measuring pulley and the mounting bracket to detect the rotating angle of the measuring pulley.
According to the utility model discloses stay cord stroke measurement device can improve the stroke measurement accuracy of stay cord.
In addition, according to the utility model discloses stay cord stroke measurement device of above-mentioned embodiment can also have following additional technical characterstic:
in some embodiments, the pinch roller mechanism comprises: the pinch roller shaft is connected with the mounting bracket; the pinch roller is rotatably connected to a pinch roller shaft, and the pinch roller presses the periphery of the measuring pulley along the radial direction of the measuring pulley and is suitable for a pull rope to pass through between the pinch roller mechanism and the measuring pulley.
In some embodiments, the pinch roller mechanism further comprises: a locking mechanism connected to the mounting bracket, wherein the pinch roller shaft is connected to the locking mechanism and the locking mechanism is configured to apply a force to the pinch roller shaft to press the pinch roller against the periphery of the measuring pulley.
In some embodiments, the locking mechanism comprises: the adjusting piece is connected with the mounting bracket and extends along the radial direction of the measuring pulley, and the pinch roller shaft is movably arranged on the adjusting piece along the radial direction of the measuring pulley; the spring is respectively connected with the adjusting piece and the pinch roller shaft and is suitable for applying force to the pinch roller shaft to enable the pinch roller to be pressed on the periphery of the measuring pulley, and the adjusting piece is suitable for adjusting the pressing force of the spring to the pinch roller shaft.
In some embodiments, a locknut is disposed on the adjusting member, and the locknut abuts against the mounting bracket.
In some embodiments, the locking mechanisms are disposed on both axial sides of the pressing wheel in the pressing wheel mechanism, and the locking mechanisms are connected to both ends of the pressing wheel shaft.
In some embodiments, at least three of the pinch mechanisms are spaced apart along a circumference of the measuring pulley.
In some embodiments, the measuring pulley comprises a pulley shaft and a pulley, and the pulley is fixedly sleeved on the pulley shaft.
In some embodiments, the mounting bracket includes a first supporting portion and a second supporting portion located at two axial sides of the pulley, the first supporting portion and the second supporting portion are both provided with mounting holes, two ends of the pulley shaft extend into the mounting holes, and a bearing is provided between the pulley shaft and an inner circumferential surface of the mounting hole.
In some embodiments, one end of the mounting hole close to the pulley is provided with a step structure, one end of the pulley shaft extends out of the corresponding bearing and is provided with a flange, the other end extends out of the corresponding bearing and is provided with a positioning structure, and the step structure, the flange and the positioning structure are matched to position the bearing.
In some embodiments, a bushing is disposed between the bearing and the pulley.
In some embodiments, the diameters of the positions of the two ends of the pulley shaft sleeved with the bearings are different.
In some embodiments, the mounting bracket comprises: the measuring pulley is rotatably arranged on the pulley bracket; the sensor mounting plate is connected with the pulley bracket, and the angular displacement sensor is mounted on the sensor mounting plate; the pinch roller support is connected with the pulley support, and the pinch roller mechanism is installed on the pinch roller support.
In some embodiments, the angular displacement sensor comprises an encoder, and the angular displacement sensor is connected with a wireless signal transmission structure.
According to the utility model discloses wire rope pulling equipment of second aspect, include: the device comprises a support framework, a measuring device, an executing mechanism and a steel wire rope, wherein the measuring device is arranged on the support framework and is a pull rope stroke measuring device; the actuator is movable relative to the support frame; the steel wire rope is respectively connected with the supporting framework and the executing mechanism, and the steel wire rope bypasses the pulley and is pressed on the pulley by the pressing wheel mechanism.
Drawings
Fig. 1 is a schematic view of a rope travel measuring device according to an embodiment of the present invention in one direction.
Fig. 2 is a schematic view of a pull-cord stroke measuring device according to an embodiment of the present invention in another direction.
Fig. 3 is a schematic view of a pull-cord stroke measuring device according to an embodiment of the present invention in another direction.
Fig. 4 is a schematic view of a pull-cord stroke measuring device according to an embodiment of the present invention in another direction.
Fig. 5 is a schematic view of a measuring pulley of the rope travel measuring device according to an embodiment of the present invention.
Fig. 6 is a cross-sectional view of a measuring pulley of the rope travel measuring device according to an embodiment of the present invention.
Fig. 7 is a schematic view of a pinch roller mechanism of a rope travel measuring device according to an embodiment of the present invention.
Fig. 8 is a cross-sectional view of a pinch roller mechanism of a rope travel measuring device according to an embodiment of the present invention.
Reference numerals:
the rope travel measuring device 10, the winding wrap angle alpha,
a mounting bracket 11, a first supporting part 1101, a second supporting part 1102, a bearing 1104, a pulley bracket 111, a sensor mounting plate 112, a pinch roller bracket 113,
measuring pulley 12, flat washer 1201, nut 1202, bushing 1203, flange 1204, pulley shaft 121, pulley 122,
the pinch roller mechanism 13, the pinch roller shaft 131, the pinch roller 132, the locking mechanism 133, the locknut 1331, the adjustment piece 1332, the spring 1333, the head 1334,
an angular displacement sensor 14.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
With reference to fig. 1 to 4, a rope travel measuring device 10 according to an embodiment of the present invention includes: mounting bracket 11, measuring pulley 12, pinch roller mechanism 13 and angular displacement sensor 14. The mounting bracket 11 is used for providing support for the measuring pulley 12, the pinch roller mechanism 13 is used for pinching a pull rope (such as a steel wire rope and the like) passing through the measuring pulley 12 so that the pull rope has a certain wrapping angle alpha on the measuring pulley 12, and the angular displacement sensor 14 determines the stroke of the pull rope by detecting the measuring pulley 12.
Specifically, the measuring pulley 12 is rotatably provided on the mounting bracket 11. The pinch roller mechanism 13 is rotatably connected to the mounting bracket 11, the pinch roller mechanism 13 includes a plurality of pinch rollers arranged in a circumferential direction of the measuring pulley 12, and the plurality of pinch rollers 13 is configured to pinch the rope wound around the measuring pulley 12 and to make a winding wrap angle α of the rope on the measuring pulley 12 not less than 80 °. The angular displacement sensor 14 cooperates with the measuring pulley 12 and the mounting bracket 11, respectively, to detect the rotation angle of the measuring pulley 12.
The wrap angle α of the rope wound around the measuring pulley 12 is defined as the central angle of the rope in the area of direct contact with the measuring pulley 12 when the rope is wound around the measuring pulley 12. The central angle may be a central angle corresponding to a region between the plurality of pinch rollers 13 and a tangent point of a common tangent line of the measuring pulley 12 on the measuring pulley 12 in the extending direction of the rope.
In the use process, a part of the pull rope is wound on the measuring pulley 12 and is tightly pressed by the pressing wheel mechanism 13, at the moment, the winding wrap angle alpha of the pull rope on the measuring pulley 12 is not less than 80 degrees, the pull rope can be tightly wrapped on the measuring pulley 12, and therefore the slip of the pull rope on the measuring pulley 12 can be effectively reduced or avoided, at the moment, the pull rope stroke determined by detecting the rotation angle of the measuring pulley 12 through the angular displacement sensor 14 is more accurate, and the problem that the detection precision is reduced due to the slip of the pull rope and the pulley 122 is solved.
According to the utility model discloses stay cord stroke measurement device 10 can improve the stroke measurement accuracy of stay cord.
The angular displacement sensor 14 is used for detecting the rotation angle or the number of turns of the measuring pulley 12, and the angular displacement sensor 14 can also be used for simultaneously detecting the rotation angle or the number of turns of the measuring pulley 12 and the like.
The pinch roller mechanism 13 and the measuring pulley 12 can be separated, that is, the pinch roller mechanism 13 does not directly press on the measuring pulley 12, but tensions the pull rope by tensioning the pull rope, and under the action of the pinch roller mechanisms 13, the tension of the pull rope by the pinch rollers 132 causes the pull rope to press on the measuring pulley 12, so that the winding wrap angle α of the pull rope on the measuring pulley 12 reaches a predetermined angle. Of course, the following description of the present invention mainly takes the case where the pressing wheel mechanism 13 directly presses the measuring pulley 12 to compress the pulling rope, but this is not a limitation to the scope of the present invention.
Alternatively, with reference to fig. 1 to 8, the pinch roller mechanism 13 includes: pinch roller shaft 131 and pinch roller 132, pinch roller shaft 131 is connected with mounting bracket 11. The pressing wheel 132 is rotatably connected to the pressing wheel shaft 131, the pressing wheel 132 is pressed on the circumferential edge of the measuring pulley 12 along the radial direction of the measuring pulley 12 and is suitable for the pull rope to pass through between the pressing wheel mechanism 13 and the measuring pulley 12, namely, the pull rope is directly pressed between the pressing wheel mechanism 13 and the measuring pulley 12, so that the stable pressing of the pull rope is realized, the winding wrap angle alpha of the pull rope on the measuring pulley 12 is ensured to meet the preset condition, in addition, the direct pressing mode can effectively improve the winding stability of the pull rope on the measuring pulley 12, the tension of the pull rope is smaller, the stress concentration problem of the pull rope is reduced, the stress of each part of the pull rope is more uniform, the strength of the pull rope is improved, and the service.
Optionally, the pressing wheel mechanism 13 further comprises: and a locking mechanism 133, wherein the locking mechanism 133 is connected with the mounting bracket 11, wherein the pressure roller shaft 131 is connected with the locking mechanism 133, and the locking mechanism 133 is configured and adapted to apply force to the pressure roller shaft 131 to press the pressure roller 132 on the periphery of the measuring pulley 12. The locking mechanism 133 can effectively realize the pressing effect between the pressing wheel mechanism 13 and the measuring pulley 12, and the stability is improved.
Alternatively, the locking mechanism 133 of the present invention may have a certain elasticity, so that the pressing force is increased while the shock is effectively absorbed, and extreme conditions (for example, the tension of the pulling rope is changed frequently) are avoided, and the wrapping angle α of the pulling rope on the measuring pulley 12 and the strength and stability of the pulling rope are maintained. Optionally, the locking mechanism 133 comprises: an adjusting piece 1332 and a spring 1333, wherein the adjusting piece 1332 is connected with the mounting bracket 11, the adjusting piece 1332 extends along the radial direction of the measuring pulley 12, and the pressure roller shaft 131 is movably arranged on the adjusting piece 1332 along the radial direction of the measuring pulley 12. A spring 1333 is connected to the adjuster 1332 and the pressure roller shaft 131, respectively, and is adapted to apply a force to the pressure roller shaft 131 to press the pressure roller 132 against the periphery of the measuring pulley 12. In addition, the locking mechanism 133 can be elastically pressed against the pressing wheel mechanism 13 by other elastic structures.
Optionally, with reference to fig. 1 to 8, a locknut 1331 is disposed on the adjusting piece 1332, and the locknut 1331 presses against the mounting bracket 11. By providing the locknut 1331, the connection strength between the adjusting piece 1332 and the mounting bracket 11 can be effectively improved, thereby improving the connection stability between the locking mechanism 133 and the mounting bracket 11.
Alternatively, the adjusting piece 1332 may be in threaded connection with the mounting bracket 11, and a locknut 1331 is disposed at one end of the adjusting piece 1332 connected with the mounting bracket 11, and the locknut 1331 abuts against the mounting bracket 11, so that the threaded connection between the adjusting piece 1332 and the mounting bracket 11 can be made stable by disposing the locknut 1331, and the threaded matching structure of the adjusting piece 1332 and the mounting bracket 11 has large friction force and contact area, so that the adjusting piece 1332 and the mounting bracket 11 are made stable.
Alternatively, the thread direction of the adjusting piece 1332 and the mounting bracket 11 and the thread direction between the nut 1202 and the adjusting piece 1332 may be set to be the same or opposite, and the thread direction of the adjusting piece 1332 and the mounting bracket 11 and the thread direction between the nut 1202 and the adjusting piece 1332 may be set to have different or the same thread pitch.
In addition, the locking mechanism 133 of the present invention can also have a released state, that is, the pressing force of the pressing wheel mechanism 13 can be adjusted by adjusting the locking mechanism 133, so that the pressing force of the pressing wheel mechanism 13 can be adjusted according to different applications and different environments, thereby improving the stability.
Alternatively, the adjusting piece 1332 may be a threaded rod, one end of the adjusting piece 1332 remote from the measuring pulley having a head 1334, and both ends of the spring 1333 abutting against the head 1334 and the pressure roller shaft 131 respectively and adapted to apply a pressure on the pressure roller shaft 131 towards the measuring pulley 12. The adjusting element can adjust the contact pressure of the spring 1333 on the roller shaft 131 (or the roller mechanism 13). When enough pressing force is needed to enable the pull rope to tightly hold the measuring pulley 12, the pressing force of the pressing wheel mechanism 13 can be improved; for example, when the pressing force of the pinch roller mechanism 13 has a large adverse effect on the expansion and contraction of the rope, the pressing force of the pinch roller mechanism 13 can be reduced. Thereby adjust the packing force of pinch roller mechanism 13 according to service environment, service conditions etc. of difference, improved effectively the utility model discloses an application scope to stability and efficiency have been improved.
Alternatively, as shown in fig. 8, the pinch roller 132 of the pinch roller mechanism 13 is provided with locking mechanisms 133 on both axial sides, and the locking mechanisms 133 are connected to both ends of the pinch roller shaft 131. Through setting up a plurality of locking mechanical system 133, can realize the effective locking of pinch roller mechanism 13, a plurality of locking mechanical system 133 can be through the adjustment moreover, realize pinch roller mechanism 13's position control for pinch roller mechanism 13 has comparatively even packing force to stay cord and measuring pulley 12, improves stability effectively, and convenient assembly, maintenance and debugging.
The utility model discloses in set up locking mechanism 133, the packing force is adjusted conveniently, can be different to measurement accuracy's requirement according to using the scene, selects suitable pinch roller 132 packing force to can suitably reduce the packing force when the required precision is not high, thereby reduce the wearing and tearing to wire rope, improve wire rope's life.
Alternatively, as shown in fig. 7, at least three pinch mechanisms 13 are arranged at intervals in the circumferential direction of the measuring pulley 12. The two pressing wheel mechanisms 13 located at the outermost side can provide pressing force for the pulling rope, so that the pulling rope is ensured to have a reasonable wrap angle on the measuring pulley 12, and the other pressing wheel mechanisms 13 can further improve the pressing force of the pressing wheel 132 on the measuring pulley 12, so that the pulling rope is ensured to have a stable wrap angle on the measuring pulley 12, and the matching stability between the pulling rope and the measuring pulley 12 is improved.
The number of the pinch roller mechanisms 13 is increased to be multiple (for example, three), two of the pinch roller mechanisms are mainly used for ensuring that the steel wire rope always has a larger winding wrap angle alpha on the measuring pulley 12, and meanwhile, the three pinch rollers 132 can press the steel wire rope onto the measuring pulley 12, so that the steel wire rope and the measuring pulley 12 are ensured not to slip, the measuring precision is obviously improved, meanwhile, the pressing force of the pinch rollers 132 can be conveniently stepless adjustable in a bolt screwing mode, and the adjusting range is larger.
Alternatively, the measuring pulley 12 includes a pulley shaft 121 and a pulley 122, and the pulley 122 is fixedly secured to the pulley shaft 121. A bearing 1104 may be disposed between the pulley shaft 121 and the mounting bracket 11, so that the stability of the rotation of the measuring pulley 12 may be effectively improved.
Alternatively, as shown in fig. 8, the mounting bracket 11 includes a first supporting portion 1101 and a second supporting portion 1102 located at two sides of the pulley shaft 121, the first supporting portion 1101 and the second supporting portion 1102 are both provided with mounting holes, two ends of the pulley shaft 121 extend into the mounting holes, and a bearing 1104 is provided between the pulley shaft 121 and an inner circumferential surface of the mounting hole. By providing the plurality of bearings 1104, stable rotation of the pulley 122 can be ensured, and the pulley 122 is prevented from shifting during rotation, that is, the risk that the axis of the pulley 122 frequently changes during rotation of the pulley 122 is reduced, so that the pulley 122 can rotate more stably. Through the combination with pinch roller mechanism 13, further guaranteed the cornerite of stay cord on measuring pulley 12 effectively, but also avoided appearing the stay cord and deviate from the scheduling problem, improve the detection precision to the stay cord stroke.
Optionally, one end of the mounting hole near the pulley 122 is provided with a step structure, one end of the pulley shaft 121 extends out of the corresponding bearing 1104 and is provided with a flange and the other end extends out of the corresponding bearing 1104 and is provided with a locating structure, the step structure, the flange and the locating structure cooperating to locate the bearing 1104. During installation, the other end of the pulley shaft 121 may sequentially pass through the first bearing 1104, the pulley 122, and the second bearing 1104 and then be positioned by the positioning structure, since one end of the pulley shaft 121 is provided with a flange, the flange may be positioned outside the first bearing 1104, and the positioning structure is provided outside the second bearing 1104.
Wherein the first bearing 1104 may be positioned by a flange and corresponding step structure and the second bearing 1104 may be positioned by a corresponding step structure and positioning structure.
In addition, the positioning structure may include a flat washer 1201 and a nut 1202, the flat washer 1201 is disposed between the nut 1202 and the second bearing 1104, and the nut 1202 is threadedly engaged with the pulley shaft 121. In addition, the positioning structure further includes a positioning pin disposed outside the nut 1202 to position the nut.
Optionally, a shaft sleeve 1203 is arranged between the bearing 1104 and the pulley 122, and the shaft sleeve 1203 can be supported between the bearing 1104 and the pulley 122, so that stable matching between the pulley 122 and the bearing 1104 can be ensured, stability of the pulley 122 is improved, and detection accuracy of a rope pulling stroke is improved.
Alternatively, the diameters of the two ends of the pulley shaft 121 are different from each other at the position of the sleeve bearing 1104. The pulley shaft 121 is provided in the shape of a variable diameter shaft, wherein the pulley 122 can abut against a step formed at a variable diameter position of the pulley shaft 121, thereby further effectively improving the stability of the fit between the pulley 122 and the pulley shaft 121, and improving the detection accuracy of the roping stroke.
Optionally, with reference to fig. 1 to 8, the mounting bracket 11 includes: the measuring pulley 12 is rotatably arranged on the pulley bracket 111; the sensor mounting plate 112 is connected with the pulley bracket 111, and the angular displacement sensor 14 is mounted on the sensor mounting plate 112; the pinch roller bracket 113 is connected with the pulley bracket 111, and the pinch roller mechanism 13 is mounted on the pinch roller bracket 113. Thus, the rope travel measuring device 10 can be provided in a form of being composed of a plurality of modules, so that respective assembly and generation of the modules can be effectively facilitated, production and assembly efficiency can be improved, and moreover, the relative positions of the elements can be rapidly and stably adjusted.
Wherein, pulley support 111, the cooperation form that can adopt bolted connection and adjustable hole between sensor mounting panel 112 and the pinch roller support 113, take pinch roller support 113 and pulley support 111's cooperation as an example, can set up first connecting hole on pinch roller support 113, can set up the second connecting hole on pulley support 111, first connecting hole and second connecting hole correspond to each other, at least one in first connecting hole and the second connecting hole can set up into the long circular hole form, when connecting pinch roller support 113 and pulley support 111 through the mounting, can adjust the relative position between pinch roller support 113 and pulley support 111. Other means, such as welding, etc., may of course be used.
Further, the pinch roller support 113 can be set to be L-shaped, and the pulley support 111 has a corresponding shape, so that the L-shaped pinch roller support 113 can be quickly and stably matched with the pulley support 111 in the installation process, and the stability of matching between the pinch roller support 113 and the pulley support 111 is improved. And the pulley bracket 111 can be provided with notches at positions corresponding to the corners of the pinch roller bracket 113, so that the problem that assembly cannot be carried out due to insufficient manufacturing precision can be avoided, and the assembly efficiency is improved.
The utility model discloses in adopt the modularization design, simple structure, make things convenient for the dismouting, and can simpler migration use in other scenes that need carry out real-time measurement to wire rope length.
Optionally, angular displacement sensor 14 comprises an encoder. Thereby improving detection accuracy, although other angular displacement sensors 14 may be used.
Additionally, the utility model provides an angular displacement sensor 14 is connected with wireless signal transmission structure. Therefore, signal transmission can be realized in a wireless signal transmission mode, the structure is simplified, and the performance is improved.
The utility model discloses a stay cord stroke measuring device 10 can be applied to in equipment such as winch, hoist, oil field drifting machine, drilling machine, is particularly useful for outer wall spraying robot's hanging flower basket decline position to detect, in the test of reality:
1) the measurement errors of the precision of the single descending position and the repeated descending position of the hanging basket are controlled within 2mm, and the measurement precision is higher than that of the existing measurement mechanism;
2) the accurate measurement of the descending position of the hanging basket lays a technical foundation and technical guarantee for the hanging basket to accurately reach a pre-spraying area, so that the spraying of automatic path planning on the outer wall surface is realized;
3) the accurate measurement of hanging flower basket decline position, measured data transmits control system in real time, can effectively control outer wall spraying robot effectively avoid the window and avoid the mistake to spout and leak and spout the phenomenon.
The pressing force of the pressing wheel of the measuring mechanism can be quickly adjusted in a bolt screwing mode, the adjusting of the pressing force is convenient to operate and high in flexibility, the adjusting range of the pressing force is wide, and the pressing force can be reduced under the condition that requirements are met for application occasions with different measuring precision requirements, so that the abrasion of a steel wire rope passing through the gap between the pressing wheel 132 and the measuring wheel is reduced, and the service life of the steel wire rope is prolonged.
The design adopts a modular design scheme, the three key pressing wheel mechanisms 13 and the measuring pulley 12 are separately designed and are arranged on respective mounting plates, so that the pressing wheel mechanisms 13 can be used as universal modules and are additionally arranged at the tops of any pulleys 122, and the pulley shaft 121 is provided with an encoder, so that the requirement of real-time monitoring on the descending length of the steel wire rope can be quickly met.
The utility model relates to compression roller formula wire rope length measuring device, the nimble adjustable elastic pressure of size that mainly utilizes a plurality of (for example three) pinch roller mechanisms 13 to provide and force wire rope to guarantee to move with measuring pulley 12 when measuring pulley 12 passes measuring pulley 12 in the huge cornerite that measuring pulley 12 formed, the phenomenon of skidding does not produce, thereby through install photoelectric encoder on measuring pulley 12 and record the number of turns that measuring pulley 12 rotated, with this number of turns can accurately and measure the length that wire rope descends in real time behind the girth of measuring pulley 12 by the product, transmit this data for motion control system through wireless mode simultaneously, the hanging flower basket that accurately controls outer wall spraying robot reachs the target location of spraying in advance and begins work.
Referring to fig. 1 to 8, in some embodiments of the present invention, the rope travel measuring device 10 includes a measuring component and a pressure wheel component, wherein the measuring component includes a pulley bracket 111, a measuring pulley 12, an angular displacement sensor 14 (e.g., a photoelectric encoder) and a sensor mounting plate 112, and the pressure wheel component includes a pressure wheel 132, a pressure wheel shaft 131, a spring 1333, an adjusting piece 1334, a locknut 1331 and a pressure wheel bracket 113. The pulley 122 in the measuring pulley 12 is installed on the pulley bracket 111 through the pulley shaft 121, and meanwhile, the angular displacement sensor 14 is installed on the pulley shaft 121 and used for recording the number of turns of the measuring pulley 12, the angular displacement sensor 14 can be fixed by adopting four bolts to be connected with the sensor mounting plate 112, meanwhile, the sensor mounting plate 112 is fixed on the pulley bracket 111 through 4 bolts, and finally, the stable connection of the measuring pulley 12 and the pulley 122 number-of-turns recording sensor is realized. The three pinch roller mechanisms 13 are fixed to the pinch roller bracket 113 (or pinch roller 132 mounting plate) by bolts, and the three pinch roller assemblies are integrally mounted to the pulley bracket 111 (or pulley 122 mounting plate). In order to ensure the measurement accuracy, the key is to ensure that the steel wire rope and the measuring pulley 12 do not slide relatively, therefore, the utility model discloses a mainly adopt two kinds of modes, firstly adopt three pinch rollers 132 to ensure that the steel wire rope has enough wrap angle alpha that the size keeps unchanged when twining the measuring pulley 12, so that the tension in the steel wire rope can be distributed on the measuring pulley 12 as much as possible, the positive pressure of the steel wire rope on the measuring pulley 12 is improved, thereby the frictional force between the steel wire rope and the measuring pulley 12 is improved, and then the steel wire rope can drive the measuring pulley 12 to rotate together in the descending process, thereby the risk that the two slide relatively and influence the measurement accuracy is reduced; and secondly, the three pressure wheel parts are provided with springs 1333, and the steel wire rope can be well pressed with the measuring pulley 12 by the elastic force generated by the springs 1333, so that the relative sliding of the two parts is reduced, and the measuring precision of the steel wire rope measuring mechanism is improved. Meanwhile, the compression elasticity of the spring 1333 can be flexibly adjusted through the adjusting piece, the downward pressure of the spring 1333 can be adjusted at will only by slightly screwing the depth of the adjusting piece, the operation is convenient, the adjustment range of the elasticity of the spring 1333 is large, the downward pressure can be adjusted according to the actual requirements on the measurement precision under different use conditions, and therefore when the measurement precision meets the use requirements, the downward pressure of the spring 1333 can be reduced to reduce the abrasion to the steel wire rope, and the service life of the steel wire rope is prolonged.
To ensure the loosening of the adjusting member due to the impact generated during the operation of the apparatus, a locknut 1331 is further installed between the mounting plate of the pressing wheel 132 and the adjusting member. When the pressure regulating part is used for the first time, the pressure regulating part is unscrewed outwards, so that the steel wire rope can conveniently penetrate through a rope groove gap between the measuring pulley 12 and the pressing wheel 132, after the pressure regulating part is completely installed, the pressure regulating part is screwed inwards gradually, the pressing wheel 132 is enabled to press the steel wire rope with certain downward pressure, and the steel wire rope is pressed on the measuring pulley 12. In the descending process of the steel wire rope, the measuring pulley 12 is driven to rotate, the number of turns of the measuring pulley 12 is recorded in real time through the angular displacement sensor 14 installed on the measuring pulley 12, the descending length of the steel wire rope can be accurately measured in real time after the number of turns is multiplied by the circumference of the measuring pulley 12, meanwhile, the data is transmitted to the motion control system in a wireless mode, and the hanging basket of the outer wall spraying robot is accurately controlled to reach the target position of pre-spraying to start working.
Finally need explain the utility model discloses a compression roller formula wire rope length measuring device adopts the modularized design mode, divide into two modules of measurement component and pinch roller part, wherein the pinch roller part is as general module, but the exclusive use, as long as install it additional at corresponding pulley 122 top, and on this pulley shaft 121 facial make-up displacement sensor 14 alright realize the real-time supervision requirement to wire rope descending length fast, this modularized design scheme is simple structure not only but also greatly improved this wire rope measuring device's use flexibility, can conveniently migrate and use any place that has the real-time measurement demand to wire rope descending height.
In the working process, firstly, the adjusting part is unscrewed to keep the pinch roller 132 and the measuring pulley 12 in a non-contact state, then the steel wire rope passes through a rope groove between the measuring pulley 12 and the pinch roller 132, then the adjusting part is screwed to enable the pinch roller 132 to press the steel wire rope on the measuring pulley 12, the measuring pulley 12 is driven to rotate simultaneously in the descending process of the steel wire rope, at the moment, the number of turns of the measuring pulley 12 is recorded in real time by the angular displacement sensor 14 installed on the pulley shaft 121, the number of turns is multiplied by the circumference of the steel wire rope wound on the measuring pulley 12 to calculate the descending length of the steel wire rope, and the data is wirelessly transmitted to the control system, so that the hanging basket of the outer wall spraying robot is accurately controlled to reach the target position of pre-spraying in real time to start working, and the.
Among them, in order to improve the detection accuracy. The wrap angle alpha of the steel wire rope wound around the measuring pulley 12, which is ensured by the pinch roller 132, needs to be ensured to be more than 80 degrees; in order to reduce the change of the circumference of the rope groove of the measuring pulley 12 caused by friction and wear and further influence the measuring precision, the surface of the measuring pulley 12 is recommended to be subjected to high-frequency quenching treatment to improve the wear resistance or periodically detect the circumference of the rope groove of the measuring pulley 12 to be used as a calibration value of the circumference when the descending length of the steel wire rope in the control system is calculated.
According to the utility model discloses wire rope pulling equipment of second aspect, include: the device comprises a supporting framework, a measuring device, an actuating mechanism and a steel wire rope. The utility model provides a wire rope pulling equipment can be outer wall spraying equipment, exterior window cleaning equipment etc..
Wherein, the measuring device is arranged on the supporting framework and is a pull rope stroke measuring device 10; the actuating mechanism is movable relative to the support frame; the steel cables are respectively connected with the supporting framework and the actuating mechanism, and the steel cables are wound around the pulley 122 and are pressed on the pulley 122 by the pinch roller mechanism 13.
The actuating mechanism can be pulled by the steel wire rope, so that the lifting of the actuating mechanism is realized by the extension and the shortening of the steel wire rope, and the lifting stability of the actuating mechanism is improved. The telescopic stroke of the steel wire rope can be rapidly and accurately measured through the measuring device, and the steel wire rope traction equipment can stably run conveniently.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (12)
1. A pull-cord travel measurement device, comprising:
mounting a bracket;
the measuring pulley is rotatably arranged on the mounting bracket;
a pinch roller mechanism rotatably connected to the mounting bracket, the pinch roller mechanism including a plurality of pinch rollers arranged in a circumferential direction of the measuring pulley, the plurality of pinch roller mechanisms being configured to pinch the pulling rope wound around the measuring pulley and to make a winding wrap angle of the pulling rope on the measuring pulley not less than 80 °;
and the angular displacement sensor is respectively matched with the measuring pulley and the mounting bracket to detect the rotating angle of the measuring pulley.
2. The pull-cord stroke measuring device of claim 1, wherein the pinch roller mechanism comprises:
the pressure wheel shaft is connected with the mounting bracket;
the pinch roller is rotatably connected to a pinch roller shaft, presses the periphery of the measuring pulley along the radial direction of the measuring pulley and is suitable for a pull rope to pass through between the pinch roller mechanism and the measuring pulley.
3. The pull-cord stroke measuring device of claim 2, wherein the clamping roller mechanism further comprises:
a locking mechanism connected with the mounting bracket,
wherein the pinch roller shaft is connected to the locking mechanism, and the locking mechanism is configured to apply force to the pinch roller shaft to press the pinch roller against the periphery of the measuring pulley.
4. The pull-cord travel measurement device of claim 3, wherein the locking mechanism comprises:
the adjusting piece is connected with the mounting bracket and extends along the radial direction of the measuring pulley, and the pinch roller shaft is movably arranged on the adjusting piece along the radial direction of the measuring pulley;
springs which are respectively connected with the adjusting piece and the pinch roller shaft and are suitable for applying force to the pinch roller shaft to enable the pinch roller to be pressed on the periphery of the measuring pulley,
wherein the adjusting member is adapted to adjust a pressing force of the spring against the platen shaft.
5. The pull-cord stroke measuring device of claim 4, wherein a locknut is provided on the adjusting member, the locknut abutting against the mounting bracket.
6. The pull-cord stroke measuring device of claim 3, wherein the locking mechanisms are disposed on both axial sides of the pressure roller in the pressure roller mechanism, and the locking mechanisms are connected to both ends of the pressure roller shaft.
7. The rope travel measuring device according to any one of claims 1 to 6, wherein at least three of the pinch rollers are arranged at intervals in a circumferential direction of the measuring pulley.
8. The pull-cord stroke measuring device according to any one of claims 1 to 6,
the measuring pulley comprises a pulley shaft and a pulley, and the pulley is fixedly sleeved on the pulley shaft;
the mounting bracket comprises a first supporting part and a second supporting part which are positioned at two axial sides of the pulley, mounting holes are formed in the first supporting part and the second supporting part, two ends of the pulley shaft extend into the mounting holes, and a bearing is arranged between the pulley shaft and the inner circumferential surface of the mounting hole;
the pulley is characterized in that one end of the mounting hole, which is close to the pulley, is provided with a step structure, one end of the pulley shaft extends out of the corresponding bearing and is provided with a flange, the other end of the pulley shaft extends out of the corresponding bearing and is provided with a positioning structure, and the step structure, the flange and the positioning structure are matched to position the bearing.
9. The pull-cord stroke measuring device of claim 8,
a shaft sleeve is arranged between the bearing and the pulley;
the diameters of the positions of the two ends of the pulley shaft, which are sleeved with the bearings, are different.
10. The pull-cord travel measurement device of any one of claims 1-6, wherein the mounting bracket comprises:
the measuring pulley is rotatably arranged on the pulley bracket;
the sensor mounting plate is connected with the pulley bracket, and the angular displacement sensor is mounted on the sensor mounting plate;
the pinch roller support is connected with the pulley support, and the pinch roller mechanism is installed on the pinch roller support.
11. The pull-cord travel measurement device of any one of claims 1-6, wherein the angular displacement sensor comprises an encoder and a wireless signal transmission structure is connected to the angular displacement sensor.
12. A wire rope pulling apparatus, comprising:
a support frame;
a measuring device provided on the support frame, the measuring device being the rope travel measuring device according to any one of claims 1-11;
an actuator movable relative to the support frame;
and the steel wire rope is respectively connected with the supporting framework and the executing mechanism, and the steel wire rope bypasses the pulley and is tightly pressed on the pulley by the pressing wheel mechanism.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020868026.9U CN211876989U (en) | 2020-05-21 | 2020-05-21 | Stay cord stroke measuring device and wire rope traction equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020868026.9U CN211876989U (en) | 2020-05-21 | 2020-05-21 | Stay cord stroke measuring device and wire rope traction equipment |
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| CN211876989U true CN211876989U (en) | 2020-11-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112794209A (en) * | 2021-01-13 | 2021-05-14 | 西安理工大学 | Steel wire rope lifting stroke measuring device |
| CN116399366A (en) * | 2023-06-08 | 2023-07-07 | 国机传感科技有限公司 | Mileage measuring device and method for in-pipeline detector based on photoelectric sensor |
-
2020
- 2020-05-21 CN CN202020868026.9U patent/CN211876989U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112794209A (en) * | 2021-01-13 | 2021-05-14 | 西安理工大学 | Steel wire rope lifting stroke measuring device |
| CN116399366A (en) * | 2023-06-08 | 2023-07-07 | 国机传感科技有限公司 | Mileage measuring device and method for in-pipeline detector based on photoelectric sensor |
| CN116399366B (en) * | 2023-06-08 | 2023-08-08 | 国机传感科技有限公司 | Mileage measuring device and method for in-pipeline detector based on photoelectric sensor |
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