CN219390997U - Slab clamp loading state detection equipment aiming at small stroke of clamping armature - Google Patents
Slab clamp loading state detection equipment aiming at small stroke of clamping armature Download PDFInfo
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- CN219390997U CN219390997U CN202320569896.XU CN202320569896U CN219390997U CN 219390997 U CN219390997 U CN 219390997U CN 202320569896 U CN202320569896 U CN 202320569896U CN 219390997 U CN219390997 U CN 219390997U
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Abstract
The utility model provides a device for detecting the loading state of a slab clamp for small stroke of a clamping armature, which comprises a shell and a mechanical part, wherein the shell is provided with a clamping armature; the mechanical part comprises an armature displacement transmission mechanism, a first transmission wheel, a second transmission wheel, a movable transmission mechanism and a temperature-resistant sensor; the second driving wheel comprises a large driving wheel and a small driving wheel which are coaxially fixed, and the circumferences of the first driving wheel and the large driving wheel are both larger than those of the small driving wheel; the armature displacement transmission mechanism is in transmission connection with the clamping armature; the armature displacement transmission mechanism is in transmission connection with the first transmission wheel; the first driving wheel is in driving connection with the small driving wheel; the large driving wheel is in driving connection with the movable driving mechanism; the temperature-resistant sensor is fixed in the shell and is triggered and connected with the movable transmission mechanism at the preset position of the transmission line. The detection equipment can carry out small-stroke detection, improves the tolerance of high-temperature environment, and is favorable for improving the effect of the detection equipment on small-stroke detection.
Description
Technical Field
The utility model relates to the technical field of detection equipment, in particular to equipment for detecting the loading state of a slab clamp aiming at small stroke of a clamping armature.
Background
Automatic cranes are widely used at present, and automation is widely used even in slab handling cranes. However, with the operation of an automated crane, various problems are gradually exposed during slab handling operations.
At present, the slab is still lifted by adopting clamps, no matter an electric slab clamp or a gravity slab clamp is used, the detection of the clamp loading state is still difficult at present, and the clamp loading state has a crucial effect in an automatic crane, because whether the lifting appliance normally lifts the load determines how to execute the next-stage action of the crane, and the operation safety of the automatic crane is directly influenced. Because of the structural specificity of the slab lifting clamp, the detection of the clamp loading state is difficult to implement, and because the slab usually has a plurality of working conditions of lifting hot slabs, the temperature of the slab just coming off line can reach even hundreds of degrees, and the detection sensor is difficult to be additionally arranged in the environment, the current situation that the detection of the slab clamp loading state is difficult is also caused.
At present, an electric slab clamp is provided with a slab height detection device which is used for detecting the quantity and thickness of slabs lifted by the clamp, and an automatic crane at present usually detects the loading state of the slabs by means of the device, but because the emphasis of functions is different, the slab height detection device can only roughly detect the loading state of the center position of the clamp, the slab clamp is provided with two pairs of clamp arms, each pair of clamp arms is provided with two clamp claws, the state of each clamp claw is uncertain in the slab lifting process, and the loading state of the clamp needs to be accurately detected to be ensured, so that the lifting safety of the crane is ensured. At present, many slab clamps in the market adopt gravity clamps, and because the gravity clamps have simple structure, mature process, low failure rate and low price, the gravity clamps are adopted in a large area before the popularization of the automatic crane, and the gravity clamps still cannot be eliminated after the popularization of the automatic crane, so that many automatic cranes still adopt the gravity clamps. The basic structure of the gravity clamp determines that the installation of the electrical detection device is very difficult, so that the whole-process automation is difficult to implement in an automatic crane adopting the gravity clamp.
The Chinese patent document with publication number CN106006389A discloses a plate blank clamp height intelligent detection device which comprises a measurement module, a correction limit and decoding module, a CPU module, an SPC3 module and a DP interface module; the device is characterized in that a measurer module is connected with a decoding module; the decoding module and the correction limit are connected with the CPU module; the CPU module is connected with the SPC3 module; the SPC3 module is connected with the DP interface module; the correction limit is a rotary cam limit, and the cam limit is mechanically connected with the encoder through a reduction gear set.
Because of the lifting process reasons, a clamping armature is usually arranged on the claw of the clamp, the device can cause the clamping armature to slide downwards under the action of gravity after the clamp clamps the slab, and the mounting process of the clamping armature determines that the clamping armature can protrude outwards in the sliding process, so that the clamping force of the clamp on the slab is larger and larger, and the lifting safety and reliability of the slab are ensured. Therefore, the loaded state of the clamp is judged to be the most reliable mode according to the action state of the clamping armature.
At present, technical innovation is being carried out in the crane industry in China, intelligent and automatic operation and remote operation are being carried out in a happy way, data acquisition is needed to be carried out on all key equipment of a crane to meet the requirements of the new technology, the detection of the loading state of a clamp is particularly important, the detection of the loading state of the clamp is imperative, and the implementation pace of a subsequent automatic crane is seriously affected otherwise.
Based on the foregoing, it is difficult to perform the load state detection of the clamp without changing the structural state of the clamp, while the slab based on the handling generally has a high temperature, and because of the production line, the movement stroke of the clamp armature is small and large because of the state of the clamp edge.
With respect to the related art, the inventor considers that when the movement stroke of the clamping armature is small, the stroke is usually only a few millimeters, and the conventional switching device is difficult to install, so that the requirement of high temperature environment (high temperature tolerance) or the requirement of small stroke cannot be met. The switch capable of meeting the requirement of smaller travel is provided with a proximity switch, and the proximity switch cannot meet the requirement of high-temperature environment. The switch capable of meeting the requirement of larger stroke is basically a lever switch, but the switch is very insensitive to the detection of smaller stroke, has obvious stroke hysteresis and can not meet the detection requirement of smaller stroke. Therefore, the existing detection equipment cannot meet the requirements of smaller stroke detection and high-temperature environment at the same time, and the effect of the existing detection equipment on smaller stroke detection is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a slab clamp loading state detection device aiming at a small stroke of a clamping armature.
The utility model provides a device for detecting the loading state of a slab clamp for small stroke of a clamping armature, which comprises a shell and a mechanical part;
the mechanical part comprises an armature displacement transmission mechanism, a first transmission wheel, a second transmission wheel, a movable transmission mechanism and a temperature-resistant sensor;
the first driving wheel and the second driving wheel are respectively arranged in the shell in a rotating way;
the second driving wheel comprises a large driving wheel and a small driving wheel which are coaxially fixed, and the circumferences of the first driving wheel and the large driving wheel are larger than those of the small driving wheel;
the armature displacement transmission mechanism is in transmission connection with the clamping armature;
the armature displacement transmission mechanism is in transmission connection with the first transmission wheel;
the first driving wheel is in driving connection with the small driving wheel;
the large driving wheel is in driving connection with the movable driving mechanism;
the temperature-resistant sensor is fixed in the shell and is triggered and connected with the movable transmission mechanism at the preset position of the transmission route.
Preferably, the mechanical part further comprises a reset mechanism for resetting the armature displacement transmission mechanism;
the reset mechanism comprises a first elastic piece;
one end of the first elastic piece is in transmission connection with the armature displacement transmission mechanism, and the other end of the first elastic piece is fixed in the shell.
Preferably, the armature displacement transmission mechanism comprises a lever transmission assembly, a steering transmission assembly and a connecting transmission assembly;
the lever transmission assembly is in transmission connection with the clamping armature;
the lever transmission assembly is in transmission connection with the steering transmission assembly;
the steering transmission assembly is in transmission connection with the connecting transmission assembly;
the connecting transmission assembly is in transmission connection with the first transmission wheel.
Preferably, the lever transmission assembly comprises a detection lever, a detection lever bracket and a detection lever shaft;
the detection lever bracket is fixedly arranged in the shell;
the detection lever shaft is arranged on the detection lever bracket;
the detection lever is rotatably arranged on the detection lever shaft;
the shell is provided with a detection lever hole;
one end of the detection lever is movably penetrated through a detection lever hole and is in transmission connection with the clamping armature;
the other end of the detection lever is in transmission connection with a steering transmission assembly.
Preferably, the steering transmission assembly comprises a steering transmission bracket, a steering transmission shaft and a steering rope;
the steering transmission bracket is arranged in the shell;
the steering transmission shaft is fixedly arranged on the steering transmission bracket;
the steering rope moves on the steering transmission shaft;
one end of the steering rope is in transmission connection with the lever transmission assembly;
the other end of the steering rope is in transmission connection with the connecting transmission assembly.
Preferably, the connecting transmission assembly comprises a connecting transmission strip and a connecting transmission chute for limiting the connecting transmission strip;
the connecting transmission bar is in transmission connection with the steering transmission assembly;
the connecting transmission bar is in transmission connection with the first transmission wheel;
the connecting transmission chute is arranged in the shell;
the connecting transmission strip is connected with the connecting transmission chute in a sliding way.
Preferably, the connecting transmission bar and the moving transmission mechanism comprise racks; the first driving wheel, the large driving wheel and the small driving wheel comprise gears;
the gear rack is meshed and driven between the connecting transmission bar and the first transmission wheel;
the first driving wheel and the small driving wheel are in gear engagement transmission;
the large driving wheel is meshed with a gear rack of the movable driving mechanism.
Preferably, the first elastic member includes a spring.
Preferably, the detection device further comprises a housing cover plate;
the shell cover plate is matched with the connecting shell to form a closed shell.
Preferably, the temperature-resistant sensor comprises a photoelectric switch, and the movable transmission mechanism at the preset position of the transmission line shields the light path of the photoelectric switch.
Compared with the prior art, the utility model has the following beneficial effects:
1. when the clamp clamps the slab and lifts the slab, the clamping armature slides downwards due to the action of gravity, when the stroke of the clamping armature is smaller, the clamping armature and the armature displacement transmission mechanism are in matched transmission, the armature displacement transmission mechanism is in matched transmission with the first transmission wheel, the first transmission wheel and the small transmission wheel are in matched transmission, the small transmission wheel and the large transmission wheel are coaxially fixed, and the large transmission wheel and the movable transmission mechanism are in matched transmission, and the circumferences of the first transmission wheel and the large transmission wheel are larger than those of the small transmission wheel; the transmission stroke of the armature displacement transmission mechanism is enlarged and converted to the movable transmission mechanism, so that the stroke of the movable transmission mechanism is enlarged, the movable transmission mechanism is transmitted to a preset position, and the temperature-resistant sensor is triggered, so that the temperature-resistant sensor acts, and the detection precision of a small stroke is improved; the detection equipment can perform small-stroke detection, and because the detection equipment does not have a processor and does not directly contact the slab, the high-temperature-resistant sensor is adopted, the tolerance to the high-temperature environment is effectively improved, and the effect of the detection equipment on the small-stroke detection is improved;
2. after the clamp releases the slab, the clamp armature is reset, the reset mechanism is convenient for resetting the armature displacement transmission mechanism, manual reset is not needed, and the next continuous use is convenient;
3. the utility model adopts the gear rack meshing transmission between the connecting transmission bar and the first transmission wheel; the first driving wheel and the small driving wheel are in gear engagement transmission; the large driving wheel is meshed with the gear rack of the movable driving mechanism for driving, so that the driving is accurate, and the detection accuracy of the small stroke is further improved.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is an overall block diagram;
FIG. 2 is a diagram of the structure of the housing;
FIG. 3 is a partial cross-sectional view of the housing;
FIG. 4 is a block diagram of a first rack runner and a second rack platen;
FIG. 5 is a schematic view of the overall assembly;
FIG. 6 is a schematic view of a mating hole of a clamp armature detection lever;
FIG. 7 is a view of a detection lever structure;
FIG. 8 is a first rack configuration diagram;
FIG. 9 is a second gear configuration diagram;
fig. 10 is a circuit diagram.
Reference numerals:
first rack 16 threading hole 31 of shell 1
Wire rope connecting column 32 of first rack chute 17 of first gear 2
Second gear 3 first spring 18 base 33
Second rack 4 second spring 19 spring tab 34
Photoelectric switch 5 circuit board 20 tooth 35
Second rack runner 6 second rack platen 21 pulley shaft mounting hole 36
Detection lever 7 housing cover mounting post 22 detection lever mating hole 37
First spring fixing column 23 of detection lever bracket 8 housing cover plate 38
Electrical bin 39 for detecting first gear shaft 24 of lever shaft 9
Second gear shaft 25 circuit board mounting post 40 of detection lever shaft hole 10
First gear platform 41 of second spring fixing column 26 of detection lever hole 11
Second gear platform 42 of pulley bracket 12 circuit board mounting hole 27
Pulley 13 electrical bin divider plate 28 clamps armature 43
Pulley shaft 14 mounting bracket 29
Wire 15 mounting hole 30
Detailed Description
The present utility model will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present utility model.
The embodiment of the utility model discloses a slab clamp load state detection device for small stroke of a clamping armature, which comprises a shell 1 and a mechanical part; the mechanical part comprises an armature displacement transmission mechanism, a first transmission wheel (for example, a first gear 2), a second transmission wheel (for example, a second gear 3), a moving transmission mechanism (for example, a second rack 4), a reset mechanism for resetting the armature displacement transmission mechanism and a temperature-resistant sensor; the first driving wheel and the second driving wheel are respectively and rotatably arranged in the shell 1; the second driving wheel comprises a large driving wheel and a small driving wheel which are coaxially fixed, and the circumferences of the first driving wheel and the large driving wheel are both larger than those of the small driving wheel; the armature displacement transmission mechanism is in transmission connection with the clamping armature 43; the armature displacement transmission mechanism is in transmission connection with the first transmission wheel; the first driving wheel is in driving connection with the small driving wheel; the large driving wheel is in driving connection with the movable driving mechanism; the temperature-resistant sensor is fixed in the shell 1 and is triggered and connected with a movable transmission mechanism at a preset position of the transmission route.
The return mechanism includes a first resilient member (e.g., a first spring 18); one end of the first elastic piece is connected with the armature displacement transmission mechanism in a transmission way, and the other end of the first elastic piece is fixed in the shell 1.
The armature displacement transmission mechanism comprises a lever transmission assembly, a steering transmission assembly and a connecting transmission assembly; the lever transmission assembly is in transmission connection with the clamping armature 43; the lever transmission assembly is in transmission connection with the steering transmission assembly; the steering transmission assembly is in transmission connection with the connecting transmission assembly; the connecting transmission component is in transmission connection with the first transmission wheel.
The lever transmission assembly comprises a detection lever 7, a detection lever bracket 8 and a detection lever shaft 9; the detection lever bracket 8 is fixedly arranged in the shell 1; the detection lever shaft 9 is arranged on the detection lever bracket 8; the detection lever 7 is rotatably arranged on the detection lever shaft 9; the shell 1 is provided with a detection lever hole 11; one end of the detection lever 7 movably penetrates through the detection lever hole 11 and is in transmission connection with the clamping armature 43; the other end of the detection lever 7 is in transmission connection with a steering transmission component.
The steering transmission assembly comprises a steering transmission bracket (such as a pulley bracket 12), a steering transmission shaft (such as a pulley shaft 14) and a steering rope (such as a steel wire rope 15); the steering transmission bracket is arranged in the shell 1; the steering transmission shaft is fixedly arranged on the steering transmission bracket; the steering rope moves on the steering transmission shaft; one end of the steering rope is in transmission connection with the lever transmission assembly; the other end of the steering rope is connected with the transmission component in a transmission way.
The connecting transmission assembly comprises a connecting transmission strip (such as a first rack 16) and a connecting transmission chute (such as a first rack chute 17) for limiting the connecting transmission strip; the connecting transmission bar is in transmission connection with the steering transmission assembly; the connecting transmission bar is in transmission connection with the first transmission wheel; the connecting transmission chute is arranged in the shell 1; the connecting transmission strip is connected with the transmission chute in a sliding way.
The connecting transmission bar and the moving transmission mechanism comprise racks; the first driving wheel, the large driving wheel and the small driving wheel comprise gears; the gear rack is connected between the transmission bar and the first transmission wheel for meshed transmission; the first driving wheel and the small driving wheel are in gear engagement transmission; the large driving wheel is meshed with the gear rack of the movable driving mechanism.
The first elastic member includes a spring. The detection device further includes a housing cover 38; the housing cover 38 is cooperatively connected with the housing 1 to form a closed housing. The temperature-resistant sensor comprises a photoelectric switch 5, and a movable transmission mechanism at a preset position of a transmission route shields the light path of the photoelectric switch 5.
Specifically, the detection system comprises a shell 1, a detection lever 7, a pulley 13, a wire rope 15, a first rack 16, a first spring 18, a first gear 2, a second gear 3, a second rack 4, a second spring 19, a photoelectric switch 5, a circuit board 20, a detection lever shaft 9, a pulley shaft 14, a second rack pressing plate 21, a first rack sliding groove 17 and a shell cover plate 38. Wherein the housing cover 38 is cooperatively connected to the housing 1 to form a closed housing, making the present utility model a closed unit, because conventional metal covers, without special process, are not shown in fig. 1 for convenience of description. The photoelectric switch 5 is connected to the electric portion.
Fig. 2 is a structural view of the housing 1 of the present utility model, wherein the housing 1 is processed with a detection lever bracket 8, a pulley bracket 12, a first spring fixing column 23, a first gear shaft 24, a second gear shaft 25, a second rack chute 6, a second spring fixing column 26, a housing cover mounting column 22, a circuit board mounting column 40, a detection lever hole 11, an electrical bin partition plate 28, and a mounting bracket 29. The housing cover 38 is attached to the housing 1 by being mounted on the housing cover mounting posts 22.
The mounting bracket 29 is machined with a mounting hole 30 (e.g., a circular hole). The electrical bin separation plate 28 divides the inside of the housing 1 into an electrical part and a mechanical part, so that the electrical part can be isolated from the mechanical component to strengthen the protection level of the electrical component, and simultaneously the electrical bin separation plate 28 is processed with a threading hole 31 for introducing the circuit of the photoelectric switch 5 installed in the mechanical part onto the circuit board 20. The second rack runner 6 is machined at the bottom of the housing 1, and is designed as a rectangular runner for convenience in machining and convenience in mounting the second rack 4. The base 33 of the second rack 4 is mounted in the second rack runner 6 so as to be slidable left and right along the second rack runner 6. The second rack pressing plate 21 is an independent part in the earlier stage, and is fixed to the bottom of the shell 1 after the second rack 4 is installed in place, so that the second rack 4 can be limited to longitudinally move, the second rack 4 can only slide left and right along the second rack sliding groove 6 but cannot be separated from the sliding groove, the section of the second rack pressing plate 21 is L-shaped, and the structural diagram is shown in fig. 4. The first rack runner 17 is a trapezoid runner, is processed into an independent part in the earlier stage, and after the base 33 of the first rack 16 is installed in the first rack runner 17, the first rack runner 17 is fixed at the bottom of the casing 1, and the structure diagram of the first rack runner 17 is shown in fig. 4. The base 33 of the first rack 16 is adapted to the first rack runner 17. Fig. 8 is a diagram showing the structure of the first rack 16, wherein the front end of the first rack 16 is provided with a steel wire rope connecting post 32, the bottom is provided with a trapezoid base 33, the tail end is provided with a spring pull ring 34, the steel wire rope connecting post 32 is connected with the steel wire rope 15, and the spring pull ring 34 is connected with the pull ring of the first rack 16. The teeth 35 of the first rack 16 are serrated. Since the base 33 of the first rack 16 is also of a trapezoid structure, after being matched with the trapezoid chute, the first rack 16 can only move left and right along the first rack chute 17 and cannot move up and down due to the limitation of the trapezoid chute. The pulley bracket 12 is machined at the bottom of the shell 1, and is a pair of brackets, and the pulley shaft mounting hole 3630 is machined in the middle of the top of the pulley bracket 12 can be seen from the D-D plane view of fig. 3. The pulley shaft 14 passes through two pulley shaft mounting holes 3630 of the pulley bracket 12, is mounted on the pulley bracket 12, and the pulley 13 is centrally mounted on the pulley shaft 14 to be rotatable along the pulley shaft 14. The detection lever support 8 is processed in a panel in front of the shell 1, and the detection lever support 8 is processed with a detection lever shaft hole 10 near the upper part according to the D-D plane diagram of fig. 3, and the detection lever shaft 9 is installed on the detection lever support 8 through the two detection lever shaft holes 10. The front end of the detection lever 7 is processed into a smooth hemispherical shape so as to be matched with the clamping armature 43, a shaft hole is processed in the middle, and a circular ring is processed at the tail end, and the specific structure is shown in fig. 7. The coaxial hole of the detection lever 7 is centrally arranged on the detection lever shaft 9, and the detection lever 7 can rotate along the detection lever shaft 9 to realize the lever effect. As can be seen from the B-B plane view of fig. 3, a detection lever hole 11 is formed in the front panel of the housing 1 near the upper portion of the center position of the detection lever bracket 8, the detection lever hole 11 is an oblong hole, and the front end of the detection lever 7 protrudes out of the housing 1 through the detection lever hole 11 for detecting the displacement of the clamp armature 43. The restriction of the detection lever hole 11 allows the front end of the detection lever 7 to move up and down within a certain range, thereby transmitting the externally detected movement into the transmission structure inside the present utility model. Both ends of the wire rope 15 are processed into circular rings, one end of which is connected to the tail end of the detection lever 7, and the other end of which is connected to the wire rope connecting post 32 of the first rack 16. The first spring 18 is formed with tabs at both ends, one end of which is connected to the spring tab 34 of the first rack 16 and the other end of which is connected to the first spring fixing post 23 of the housing 1. First gear shaft 24 and second gear shaft 25 are machined in the bottom of housing 1, first gear shaft 24 is machined with first gear platform 41, and second gear shaft 25 is machined with second gear platform 42, as shown in the C-C plan view of fig. 3. The first gear 2 is mounted on the first gear shaft 24 and is attached to the first gear platform 41, the first gear 2 is lifted to a certain height through the first gear platform 41 and meshed with the first rack 16, the number of teeth of the first gear 2 is 60, the modulus is 0.5, the pressure angle is 20 degrees, and the thickness is 2 mm. The second gear 3 is mounted on the second gear shaft 25 and attached to the second gear platform 42, and the second gear 3 is lifted to a certain height by the second gear platform 42. The second gear 3 is a double-layer gear, the top layer is a 10-tooth pinion, the modulus is 0.5, the pressure angle is 20 degrees, the thickness is 5 mm, the bottom layer is a large gear, the number of teeth is 50, the modulus is 0.5, the pressure angle is 20 degrees, and the thickness is 2 mm. The pinion of the second gear 3 meshes with the first gear 2, and the bull gear of the second gear 3 meshes with the second rack 4. The second rack 4 is provided with a rectangular base 33, the base 33 is installed in the second rack chute 6 and can slide along the second rack chute 6, the tail part is provided with a spring pull ring 34, and the specific structure diagram of the second rack 4 is shown in fig. 9. The teeth 35 of the second rack 4 are serrated. And the two ends of the second spring 19 are also provided with pull rings, and the second spring 19 is provided with a spring which can be stretched or compressed. The spring tab 34 of the second rack 4 is connected to one end tab of the second spring 19, and the other end tab of the second spring 19 is connected to the second spring fixing post 26 on the housing 1. The second rack 4 slides leftwards along the second rack sliding groove 6 to stretch the second spring 19, when the second rack 4 is separated from the transmission chain, the second rack 4 is clung to the second gear 3 by the pulling force of the second spring 19, and when the second gear 3 is reset, the second rack 4 can be immediately re-connected into the transmission chain. The second spring 19 is compressed when the second rack 4 slides rightwards, and when the second rack 4 breaks away from the transmission chain rightwards, the elasticity of the second spring 19 also enables the second rack 4 to be clung to the second gear 3, so that the second rack 4 can be immediately re-connected into the transmission chain when the second gear 3 is reset. The photoelectric switch 5 is fixed at the front end of the second rack chute 6, and when the second rack 4 slides leftwards, the photoelectric switch 5 can be penetrated, so that the light path of the photoelectric switch 5 is shielded, and the photoelectric switch 5 acts. The circuit board 20 is mounted on the circuit board mounting post 40 on the housing 1, and is mounted and fixed through the circuit board mounting hole 3027.
Fig. 5 is an assembled view of the whole of the present utility model, in which a detection lever fitting hole 37 is formed at the center of the clamp armature 43, and as shown in fig. 6, the front end of the detection lever 7 of the present utility model is to be connected to the detection lever fitting hole 37 of the clamp armature 43.
Fig. 10 is a schematic diagram of the present utility model. J1 is an external interface terminal, wherein the 1,2 terminals are power terminals, the 1-pin 24vdc, the 2-pin GND, and the 3,4 terminals are relay interface output terminals for deriving switch contact signals of the relay. The connection terminal of the J2-bit photoelectric switch 5 (U2), the terminals 1 and 2 are the terminals of the diode connected as U2, the anode of the diode is arranged at the 1 pin, the GND is arranged at the 2 pin, the 3 and 4 are the connection terminals of the transistor of the photoelectric switch 5, the collector is connected at the 3 pin, and the emitter is connected at the 4 pin. U1 is a power chip that converts 24VDC to 5VDC for driving the relay and the photoelectric switch 5. When the opto-electronic switch 5 is not blocked, the 3,4 terminals of U2 are turned on, shorting the base of Q1 of the transistor to GND, so Q1 will be turned off, disabling the relay. When the photoelectric switch 5 is blocked by the second rack 4, the 3,4 ends of the U2 are cut off, the base electrode of the transistor Q1 is pulled to a high level by the resistors R4 and R2, so that the transistor Q1 is conducted, the relay is driven, the contact is connected, and the transistor Q1 is led out through the 3,4 terminals of the J1.
The basic working principle of the utility model is as follows.
When the clamp clamps a slab and lifts the slab, the clamping armature 43 slides downwards due to the action of gravity, the clamping armature 43 is matched with the front end of the detection lever 7 of the utility model through the detection lever matching hole 37, so that the detection lever 7 moves downwards, the detection lever 7 moves upwards through the detection lever shaft 9, the tail end of the detection lever 7 is connected with the steel wire rope 15, the steel wire rope 15 is pulled, the other end of the steel wire rope 15 is connected with the steel wire rope connecting post 32 of the first rack 16, the first rack 16 is pulled leftwards due to the reversing action of the pulley 13, the first rack 16 is meshed with the first gear 2, the first gear 2 is meshed with the pinion of the second gear 3, the second gear 3 is driven to rotate anticlockwise, the big gear at the bottom of the detection lever is meshed with the second rack 4, and anticlockwise rotation of the second gear 3 drives the second rack 4 to move leftwards. When the second rack 4 moves below the photoelectric switch 5, the optical path of the photoelectric switch 5 is blocked, so that the photoelectric switch 5 is operated, a trigger signal of the photoelectric switch is detected by the circuit board 20, the circuit board 20 triggers the relay to be attracted according to the trigger signal, a passive switch signal is obtained, the signal is led out of the clamp through the J1 connecting terminal of the circuit board 20 and is used for detecting external equipment, and therefore the clamp clamping load state is detected. When the utility model is installed on each clamp leg, external equipment can judge the clamping and loading states of the plate blank according to the state signals of the four clamp legs, and can judge that the plate blank is successfully clamped only when the states of the four clamp legs synchronously act, and can judge that the plate blank is failed to be clamped if the condition of asynchronism occurs or all the states do not occur.
The gear-rack speed ratio calculation formula is V Rack bar ＝πd Gear wheel n Gear wheel Wherein V is Rack bar Representing the speed of movement of the rack; pi represents the circumference ratio; d, d Gear wheel Represents the outer diameter of the gear, n Gear wheel Indicating the rotational speed of the gear. Therefore, in the rack-gear-rack transmission structure, the middle single-layer gear does not change the speed ratio of the active and passive racks, and only the direction of the passive racks can be changed. Only double-layer gears can change the speed ratio of the active and passive racks. The second gear 3 in the utility model is a double-layer gear and is the only element for changing the driving and driven gear ratio of the utility model. The number of teeth of the pinion gear of the second gear 3 of the present utility model is 10, and the number of teeth of the bull gear is 50, so the transmission ratio is 5 times, so the ratio of the first rack 16 to the second rack 4 is 1:5. since the fulcrum of the detection lever 7 is at the center position, the transmission ratio of the lever is 1:1, the wire 15 is likewise 1:1, so that the clamp armature 43 moves down the same distance as the first rack 16, and the second rack 4 moves 5 times the clamp armature 43.
When the moving distance of the clamping armature 43 is less than or equal to 5 mm, the second rack 4 will act in a normal working stroke, and when the moving distance of the clamping armature 43 is greater than 5 mm, the second rack 4 will move left to separate from the transmission chain, and excessive displacement of the clamping armature 43 will not move the second rack 4 any more, so that the occurrence of stroke overshoot is avoided. When the clamping armature 43 is restored, the first rack 16 is pulled by the first spring 18 to be restored, and the second rack 4 is immediately connected into the transmission chain due to the pulling of the second spring 19. When the overshoot stroke of the clamping armature 43 is too large, the second rack 4 can be reversely moved to the right end and separated from the transmission chain again during resetting, so that the reverse stroke overshoot is avoided, and when the clamping armature 43 is completely reset, the first rack 16 is completely reset, and the second rack 4 is re-connected into the transmission chain due to the elastic action of the second spring 19, so that the next action is ready.
In the design of the utility model, the action detection can be realized when the action distance of the clamping armature 43 is more than 4 mm, but the second rack 4 and the detection lever 7 can be redesigned to meet the requirements of different clamps, and the size of the shell 1 is also redesigned. Because the hot blank and the cold blank are arranged on the clamped plate blanks under different working conditions, the temperature of the hot blank can reach hundreds of degrees, the temperature of an internal circuit is too high due to the fact that the temperature of the hot blank is too close to an armature, and the heat insulation cotton (heat insulation layer) is additionally arranged outside the detection lever 7 (the shell 1 and the shell cover plate 38), so that the internal circuit is not overheated.
In order to realize detection of small strokes, a transformation ratio mechanism is added, and detection strokes are enlarged, so that the method is an effective means. Meanwhile, in order to avoid overshoot in a large journey, the transmission chain breaking is required to be realized in the large journey, and the condition that the overshoot cannot occur in the large journey is ensured.
In order to achieve the above, the utility model realizes a 5-time transformation ratio transmission mechanism through a transmission form of a rack, a gear and a rack. The transmission mode of the gear rack can easily realize accurate detection of small stroke through proper transformation ratio transmission, meanwhile, the characteristic that the rack is separated from the gear to separate from the transmission chain can be utilized, the rack is separated from the transmission chain when a large stroke occurs, so that large-stroke buffering is realized, the rack is immediately connected into the transmission chain through an effective means in a recovery stroke, the detection accuracy of the small stroke is ensured, the buffering of the large stroke is also considered, the self-adaption of the stroke is realized, and the detection accuracy, reliability, compatibility and self-adaption of equipment are effectively improved. In order to ensure that the racks separated from the transmission chain can be automatically re-connected into the transmission chain in the course of stroke recovery, an automatic mechanism for resetting the racks is also required to be added. The driven rack can be separated from the transmission chain when the reverse stroke overshoots, so that the overshoots can be avoided, the spring is compressed, and the driven rack can be automatically re-connected into the transmission chain due to the elastic force of the spring when the stroke is recovered, so that the transmission effect is recovered.
The utility model realizes the reliable detection of the small stroke of the plate blank clamp claw clamping armature 43 and the overshoot prevention design of the large stroke through a simple gear-rack transmission mode, thereby realizing the reliable detection of the action of the clamping armature 43 and also realizing the reliable detection of the clamp loading state. Because the whole utility model does not adopt a high-end sensor and expensive components, the machining precision of the utility model is not too high, and only the basic transmission fit of the gear and the rack and the machining of the chute are realized, the whole cost can be controlled very low. The utility model realizes the reliable detection function of the loaded state of the crane clamp with lower cost, and meets the requirements of intellectualization and automation of the crane. Meanwhile, the requirements of domestic clamp manufacturers can be effectively met, the technical innovation of the automatic slab handling crane is promoted, the degree of automation of the slab handling crane is improved, and the safe and reliable degree of automatic handling and the automatic commissioning rate of the slab clamping crane are realized.
The utility model is a detection device which can detect small strokes, can not be damaged by overshooting under the condition of large strokes, can meet the requirement of a high-temperature environment, realizes the load state detection of the clamp, and is always a device for reliably detecting the load state of the clamp, so that the device can meet the requirements of domestic clamp manufacturers, can realize the technical update of the clamp without the clamp load state detection device in the past, realize the load detection function, can promote the technical innovation of a slab lifting automatic crane, improve the automation degree of the slab lifting crane, and realize the safe and reliable degree of the automatic lifting of the slab clamp crane and the automatic commissioning rate.
In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and are not to be construed as limiting the present application.
The foregoing describes specific embodiments of the present utility model. It is to be understood that the utility model is not limited to the particular embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without affecting the spirit of the utility model. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily without conflict.
Claims (10)
1. The device for detecting the loading state of the slab clamp for small stroke of the clamping armature is characterized by comprising a shell (1) and a mechanical part;
the mechanical part comprises an armature displacement transmission mechanism, a first transmission wheel, a second transmission wheel, a movable transmission mechanism and a temperature-resistant sensor;
the first driving wheel and the second driving wheel are respectively arranged in the shell (1) in a rotating way;
the second driving wheel comprises a large driving wheel and a small driving wheel which are coaxially fixed, and the circumferences of the first driving wheel and the large driving wheel are larger than those of the small driving wheel;
the armature displacement transmission mechanism is in transmission connection with the clamping armature (43);
the armature displacement transmission mechanism is in transmission connection with the first transmission wheel;
the first driving wheel is in driving connection with the small driving wheel;
the large driving wheel is in driving connection with the movable driving mechanism;
the temperature-resistant sensor is fixed in the shell (1), and is triggered and connected with the movable transmission mechanism at the preset position of the transmission route.
2. The apparatus for detecting the loaded state of a slab clamp for small strokes of clamping an armature according to claim 1, wherein said mechanical portion further comprises a reset mechanism for resetting the armature displacement transmission mechanism;
the reset mechanism comprises a first elastic piece;
one end of the first elastic piece is in transmission connection with the armature displacement transmission mechanism, and the other end of the first elastic piece is fixed in the shell (1).
3. The apparatus for detecting a load condition of a slab clamp for small strokes of a clamp armature according to claim 1, wherein the armature displacement transmission mechanism comprises a lever transmission assembly, a steering transmission assembly and a connecting transmission assembly;
the lever transmission assembly is in transmission connection with the clamping armature (43);
the lever transmission assembly is in transmission connection with the steering transmission assembly;
the steering transmission assembly is in transmission connection with the connecting transmission assembly;
the connecting transmission assembly is in transmission connection with the first transmission wheel.
4. A slab clamp load state detection apparatus for small strokes of a clamp armature according to claim 3, characterized in that the lever transmission assembly comprises a detection lever (7), a detection lever bracket (8) and a detection lever shaft (9);
the detection lever bracket (8) is fixedly arranged in the shell (1);
the detection lever shaft (9) is arranged on the detection lever bracket (8);
the detection lever (7) is rotatably arranged on a detection lever shaft (9);
the shell (1) is provided with a detection lever hole (11);
one end of the detection lever (7) is movably penetrated with a detection lever hole (11) and is in transmission connection with the clamping armature (43);
the other end of the detection lever (7) is in transmission connection with a steering transmission assembly.
5. The slab clamp load state detection apparatus for a small stroke of a clamp armature of claim 3, wherein the steering drive assembly comprises a steering drive bracket, a steering drive shaft, and a steering rope;
the steering transmission bracket is arranged in the shell (1);
the steering transmission shaft is fixedly arranged on the steering transmission bracket;
the steering rope moves on the steering transmission shaft;
one end of the steering rope is in transmission connection with the lever transmission assembly;
the other end of the steering rope is in transmission connection with the connecting transmission assembly.
6. The slab clamp load state detection device for small strokes of a clamping armature of claim 3, wherein the connecting transmission assembly comprises a connecting transmission strip and a connecting transmission chute for limiting the connecting transmission strip;
the connecting transmission bar is in transmission connection with the steering transmission assembly;
the connecting transmission bar is in transmission connection with the first transmission wheel;
the connecting transmission chute is arranged in the shell (1);
the connecting transmission strip is connected with the connecting transmission chute in a sliding way.
7. The apparatus for detecting a load state of a slab clamp for a small stroke of a clamp armature according to claim 6, wherein the connecting transmission bar and the moving transmission mechanism include a rack; the first driving wheel, the large driving wheel and the small driving wheel comprise gears;
the gear rack is meshed and driven between the connecting transmission bar and the first transmission wheel;
the first driving wheel and the small driving wheel are in gear engagement transmission;
the large driving wheel is meshed with a gear rack of the movable driving mechanism.
8. The slab clamp load condition detection apparatus for a small stroke of a clamp armature of claim 2, wherein the first resilient member comprises a spring.
9. The device for detecting the loading condition of a slab clamp for small strokes of a clamping armature according to claim 1, characterized in that it further comprises a housing cover plate (38);
the shell cover plate (38) is matched and connected with the shell (1) to form a closed shell.
10. The slab clamp load state detection device for small strokes of a clamping armature according to claim 1, wherein the temperature-resistant sensor comprises a photoelectric switch (5), and a moving transmission mechanism at a preset transmission route is used for shielding an optical path of the photoelectric switch (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320569896.XU CN219390997U (en) | 2023-03-21 | 2023-03-21 | Slab clamp loading state detection equipment aiming at small stroke of clamping armature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320569896.XU CN219390997U (en) | 2023-03-21 | 2023-03-21 | Slab clamp loading state detection equipment aiming at small stroke of clamping armature |
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| Publication Number | Publication Date |
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| CN219390997U true CN219390997U (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320569896.XU Active CN219390997U (en) | 2023-03-21 | 2023-03-21 | Slab clamp loading state detection equipment aiming at small stroke of clamping armature |
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| Country | Link |
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| CN (1) | CN219390997U (en) |
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- 2023-03-21 CN CN202320569896.XU patent/CN219390997U/en active Active
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