CN216402851U - Chain pretension and chain breakage detection device - Google Patents
Chain pretension and chain breakage detection device Download PDFInfo
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- CN216402851U CN216402851U CN202122528636.1U CN202122528636U CN216402851U CN 216402851 U CN216402851 U CN 216402851U CN 202122528636 U CN202122528636 U CN 202122528636U CN 216402851 U CN216402851 U CN 216402851U
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- pretension
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- pressure
- scraper conveyor
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Abstract
The chain pretension and chain breakage detection device comprises a chain rotating shaft which is movably arranged along the conveying direction of a scraper conveyor and drives the scraper conveyor to rotate, a locking device which limits the rotation shaft to move back due to chain pretension and enables the chain to be in a tensioning state is arranged on a machine body of the scraper conveyor, and a sensor assembly which is used for detecting the pressure applied to the locking device by the rotation shaft is arranged between the locking device and the rotation shaft. The utility model can realize real-time detection of chain pretension and chain breakage, has sensitive reaction and high safety, is beneficial to safe and stable operation of equipment, and has simple structure and convenient maintenance.
Description
Technical Field
The utility model belongs to the technical field of scraper conveying equipment, and particularly relates to a detection device for chain pretension and chain breakage.
Background
After the scraper conveyor is broken or blocked, processing measures need to be taken to cut off the control power supply of the scraper conveyor in time so as to stop the operation of the equipment. At present, a chain breakage detection device on a scraper conveyor mostly uses a proximity switch to detect a pulse signal sent by a driven gear train so as to judge whether chain breakage occurs, chain pretension detection mostly indirectly obtains a result by using a method for measuring chain sag, the detection is usually separately measured, although a chain breakage detection structure can judge whether chain breakage occurs to the scraper conveyor, the detection signal has certain hysteresis, the detection reaction is insensitive, the reliability is lower, chain breakage processing measures cannot be timely developed, and great hidden danger exists in safe operation of equipment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a chain pretension and chain breakage detection device which can realize real-time detection of chain pretension and chain breakage, is sensitive in response, high in safety, beneficial to safe and stable operation of equipment, simple in structure and convenient to maintain.
The technical scheme adopted by the utility model to solve the technical problems is as follows:
the utility model provides a detection device of chain pretension and broken chain, includes that the direction of delivery along scraper conveyor is portable sets up, orders about chain pivoted rotation axis, is equipped with the locking device that restriction rotation axis produced because of chain pretension moves back, makes the chain be in the tensioning state on scraper conveyor's the organism, is equipped with the sensor subassembly that is used for detecting the rotation axis and applys pressure to locking device between locking device and the rotation axis.
Furthermore, the rotating shaft is arranged on a guide device which can be movably arranged along the conveying direction of the scraper conveyor, a tensioning device which drives the guide device to move along the conveying direction of the scraper conveyor so as to tension the chain is arranged on the body of the scraper conveyor, the locking device is used for limiting the return movement of the guide device after the guide device loses the driving of the tensioning device, and the sensor assembly is used for detecting the pressure between the guide device and the locking device.
Furthermore, the locking device comprises a support fixed on the machine body, a screw rod penetrating through the support and used for limiting the guide device to move back after the guide device loses the driving of the tensioning device is arranged, and a locking nut is arranged on the screw rod in a matching mode.
Further, the sensor assembly comprises a pressure sensor fixed on the guide device, and a sensor pressure head used for pressing the pressure sensor when the locking device is locked is arranged at one end of the screw rod used for limiting the return movement of the guide device.
Further, the sensor assembly includes a pressure sensor disposed between the lock nuts.
Further, a control system is included that is coupled to the sensor assembly to obtain a pressure between the guide and the locking device as measured by the sensor assembly.
The pressure gauge is connected with the control system and used for displaying the pressure between the guide device and the locking device, which is measured by the sensor assembly.
Further, the guiding device comprises a bearing seat which is arranged on the machine body in a sliding mode along the conveying direction of the scraper conveyor and used for installing the rotating shaft.
Furthermore, the tensioning device comprises a hydraulic oil cylinder arranged on the machine body along the conveying direction of the scraper conveyor, and a piston rod of the hydraulic oil cylinder is detachably connected with the bearing seat.
Furthermore, a piston rod of the hydraulic oil cylinder is detachably connected with the bearing seat through a front ear ring support.
The utility model has the beneficial effects that:
according to the detection device for chain pretension and chain breakage, the sensor assembly is arranged between the locking device and the rotating shaft, the rotating shaft is arranged on the guiding device, the sensor assembly is used for detecting the pressure between the guiding device and the locking device, when the chain is broken or loosened, the pressure applied by the chain to the rotating shaft changes, the pressure between the guiding device and the locking device also changes, the pressure value signal acquired by the sensor assembly changes, and a worker can judge whether chain breakage occurs according to the change of the pressure value or the comparison of the pressure values measured by different chains.
Description of the drawings:
fig. 1 is a schematic structural diagram of a chain pretension and chain breakage detection device according to an embodiment;
FIG. 2 is a side view of the structure of FIG. 1;
FIG. 3 is a schematic view of an installation structure of a sensor assembly in the chain pretensioning and chain breakage detecting device according to the first embodiment;
FIG. 4 is a schematic structural diagram of the chain pretension and chain breakage detection apparatus according to the second embodiment;
fig. 5 is a schematic structural diagram of the chain pretension and chain breakage detection device according to the second embodiment.
The labels in the figure are: 1. guide device, 101, guide rail, 102, guide rail seat, 103, bearing seat, 104, sensor mounting seat, 2, sensor assembly, 201, pressure sensor, 202, gasket, 3, locking device, 301, sensor pressure head, 302, locking nut, 303, support, 304, screw rod, 4, tensioning device, 401, front ear ring support, 402, hydraulic oil cylinder, 403, rear ear ring support, 404, pin shaft, 5, rotating shaft, 6, machine body, 7 and chain wheel.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and detailed description, wherein in the description of the utility model it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model.
The utility model relates to a chain pretension and broken chain detection device, which comprises the following specific embodiments:
as shown in fig. 1 to 2, the chain pretension and chain breakage detecting device of the present embodiment includes a guiding device 1 and a tensioning device 4, the guiding device 1 is used for installing a rotating shaft 5 driven by a motor, a sprocket 7 for driving a chain of a scraper conveyor to rotate is arranged on the rotating shaft 5, the tensioning device 4 is used for driving the guiding device 1 to move along a conveying direction of the scraper conveyor, so as to adjust a distance between the rotating shaft 5 and a driven shaft of the chain of the scraper conveyor, so as to adjust tensioning of the chain on the scraper conveyor, due to the existence of the pretension, the chain applies a reverse pressure to the rotating shaft 5, the rotating shaft 5 has a tendency of driving the guiding device 1 to move back to a direction opposite to a direction in which the tensioning device 4 tensions the chain, a locking device 3 is arranged on a machine body 6 of the scraper conveyor, when the guiding device 1 drives the rotating shaft 5 to achieve a predetermined pretension under the driving of the tensioning device 4, the locking device 3 locks the guide device 1, at this time, the chain applies pressure to the rotating shaft 5, and after the tensioning device 4 is removed, namely after the guide device 1 loses the driving of the tensioning device 4, under the condition that the guide device 1 and the tensioning device 4 do not generate acting force any more, the locking device 3 can limit the moving back trend of the guide device 1 caused by the pressure applied to the rotating shaft 5 by the chain, so that the chain is in a tensioning state under the condition that the tensioning device 3 is not arranged.
The sensor component 2 is arranged between the locking device 3 and the guiding device 1, the sensor component 2 is used for detecting the pressure of the rotating shaft 5 on the locking device under the pressure applied by the chain, the pressure is that the pressure between the guiding device 1 and the locking device 3 is changed when the chain is broken or loosened, so that the pressure between the guiding device 1 and the locking device 3 is changed, the pressure value signal acquired by the sensor component 2 in real time is changed, the pretension of the chain is reflected in real time, and whether the chain is broken or not is judged according to the change of the pressure value, therefore, the sensor component 2 arranged between the locking device 3 and the guiding device 1 can realize the real-time detection of the pretension and the chain breakage of the chain, and has the advantages of sensitive reaction and high safety, and is favorable for the safety, safety and the like of equipment, Stable operation, simple integral structure and convenient maintenance.
The locking device 3 in this embodiment comprises a support 303 fixed on the machine body 6, a screw 304 is arranged through the support 303, the screw 304 is used for limiting the guide device 1 to move back when the guide device 1 loses the drive of the tension device 4, specifically, the screw 304 can be aligned with the guide device along the conveying direction of the scraper conveyor and is screwed on the support 303, a locking nut 302 is arranged on the screw 304 in a matching way, when the tensioning device 4 moves the guide 1 to a position in which the chain is at a desired pre-tension, the screw 304 is pressed against the guide 1, the tensioning device 4 can be removed after the screw rod 304 is locked by the locking nut 302, the locking device 1 plays a role in limiting the return movement of the guide device 1, after the guide device 1 is in stress balance, the pressure of the guide device 1 on the lead screw 304, i.e. the retraction force applied by the chain to the guide device 1, can be used to determine the pretension of the chain.
In this embodiment, as shown in fig. 3, the sensor assembly 2 includes a pressure sensor 201, one end of the screw 304 for limiting the backward movement of the guide device 1 is provided with a sensor pressure head 301 for pressing against the pressure sensor 201 when the locking device 3 is locked, the guide device 1 is provided with a sensor mounting seat 104, one end of the pressure sensor 201 is fixed on the sensor mounting seat 104, the other end of the pressure sensor 201 is in a straight line with the moving direction of the screw 304, and when the screw 304 presses against the guide device 1, the sensor pressure head 301 presses the pressure sensor 201. When the arrangement structure is applied to a pressure sensor with a convex structure, a groove matched with the convex structure of the pressure sensor 201 can be arranged on a sensor pressure head 301, at the moment, the sensor pressure head 301 can adopt a nut with the groove at the end part, when a chain is broken or looses, the pressure applied to a rotating shaft 5 by the chain changes, so that the pressure between a guide device 1 and a locking device 3 changes, the pressure sensor 201 can quickly acquire the pressure condition between the guide device 1 and the locking device 3, a worker can judge whether the chain is broken according to the change of the pressure value, for example, the chain is impacted by feeding or generates signal fluctuation in order to avoid misjudgment, when the arrangement structure is used specifically, the possibility that the two chains of a scraper conveyor simultaneously break is extremely low, so the detection device can be respectively arranged on the two chains of the scraper conveyor, if chain breakage or looseness take place for one side chain, the pressure signal that detection device that corresponds this chain setting obtained will produce great difference with the pressure signal that detection device obtained on the chain of opposite side, and the staff can this more accurately judge whether chain breakage takes place for scraper conveyor's chain.
The guiding device 1 of the embodiment comprises a bearing seat 103 which is arranged on the machine body 6 in a sliding manner along the conveying direction of the scraper conveyor and is used for installing the rotating shaft 5, specifically, a guide rail seat 102 can be arranged on the machine body 6, a guide rail 101 is arranged on the guide rail seat 102 along the conveying direction of the scraper conveyor, and the bearing seat 104 is arranged on the guide rail 101 in a sliding manner.
The utility model relates to a chain pretension and broken chain detection device, which comprises the following specific embodiments:
unlike the first embodiment, for a ring-shaped pressure sensor, such as the ring-shaped load cell manufactured by Shenzhen force sensing technology, the sensor head 301 at the end of the lead screw 304 is not directly pressed against the ring-shaped load cell, as shown in FIGS. 4-5, the chain pretension and chain breakage detecting device for a scraper conveyor of the present embodiment includes the pressure sensor 201 disposed between the lock nuts 302, in which the pressure sensor 201 is disposed between the lock nuts 302 and the support 303, the spacer 202 is disposed at the end face where the pressure sensor 201 contacts the lock nuts 302, and the lead screw 304 is disposed through the pressure sensor 201, and the pressure between the guiding device 1 and the locking device 3 is reflected by the pressure between the lock nuts 302.
The third embodiment of the chain pretension and broken chain detection device of the utility model is as follows:
different from the above embodiments, when processing the pressure value obtained by the sensor component 2, the present embodiment is provided with a control system (not shown in the figure) connected to the sensor component 2, the control system may be a central control system in production or a separately arranged controller similar to a PLC, and the control system obtains real-time detection data of the sensor component 2, so as to facilitate unified automatic management.
In this embodiment, connection control system still is equipped with the manometer (not shown in the figure), and control system feeds back the real-time detection data processing back of the sensor module 2 who obtains and carries out pressure display on the manometer, the direct-viewing of production personnel when the on-the-spot inspection of being convenient for is visual.
It should be noted that the above embodiments are only for illustrating the present invention, but the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a detection apparatus for chain pretension and broken chain, includes along the portable setting of scraper conveyor's direction of delivery, orders about chain pivoted rotation axis (5), is equipped with on scraper conveyor's organism (6) and restricts return that rotation axis (5) produced because of chain pretension, makes the chain be in the locking device (3) of tensioning condition, its characterized in that: a sensor component (2) for detecting the pressure applied by the rotating shaft (5) to the locking device (3) is arranged between the locking device (3) and the rotating shaft (5).
2. The device for detecting the pretension and the chain breakage of the chain according to claim 1, wherein the rotating shaft (5) is mounted on a guide device (1) movably arranged along the conveying direction of the scraper conveyor, a tensioning device (4) for driving the guide device (1) to move along the conveying direction of the scraper conveyor so as to tension the chain is arranged on a body (6) of the scraper conveyor, the locking device (3) is used for limiting the return movement of the guide device (1) after the guide device (1) loses the driving of the tensioning device (4), and the sensor assembly (2) is used for detecting the pressure between the guide device (1) and the locking device (3).
3. The device for detecting the pretension and the chain breakage of the chain according to claim 2, wherein the locking device (3) comprises a support (303) fixed on the machine body (6), a screw rod (304) is arranged through the support (303) and used for limiting the guide device (1) to move back after the guide device (1) loses the driving of the tensioning device (4), and a locking nut (302) is arranged on the screw rod (304) in a matching way.
4. A chain pretension and chain breakage detection device according to claim 3, wherein the sensor assembly (2) comprises a pressure sensor (201) fixed to the guide (1), and the end of the lead screw (304) for limiting the return movement of the guide (1) is provided with a sensor ram (301) for pressing the pressure sensor (201) when the locking device (3) is locked.
5. A chain pretension and chain breakage detection device according to claim 3, wherein the sensor assembly (2) comprises a pressure sensor (201) arranged between the lock nuts (302).
6. A chain pretension and chain breakage detection device according to any of claims 2-5, further comprising a control system connected to the sensor assembly (2) to obtain the pressure between the guide (1) and the locking device (3) measured by the sensor assembly (2).
7. A device for detecting the pretension and the breakage of a chain according to claim 6, further comprising a pressure gauge connected to the control system for indicating the pressure between the guide means (1) and the locking means (3) measured by the sensor assembly (2).
8. A device for detecting chain pretension and chain breakage according to claim 2, characterized in that the guide means (1) comprises a bearing block (104) slidably arranged on the body (6) in the conveying direction of the scraper conveyor for mounting the rotary shaft (5).
9. The device for detecting the chain pretension and the chain breakage according to claim 8, wherein the tensioning device (4) comprises a hydraulic oil cylinder (402) arranged on the machine body (6) along the conveying direction of the scraper conveyor, and a piston rod of the hydraulic oil cylinder (402) is detachably connected with the bearing seat (104).
10. The device for detecting chain pretension and chain breakage according to claim 9, wherein the piston rod of the hydraulic cylinder (402) is detachably connected to the bearing seat (104) through the front ear ring support (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122528636.1U CN216402851U (en) | 2021-10-20 | 2021-10-20 | Chain pretension and chain breakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122528636.1U CN216402851U (en) | 2021-10-20 | 2021-10-20 | Chain pretension and chain breakage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216402851U true CN216402851U (en) | 2022-04-29 |
Family
ID=81296728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122528636.1U Active CN216402851U (en) | 2021-10-20 | 2021-10-20 | Chain pretension and chain breakage detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216402851U (en) |
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2021
- 2021-10-20 CN CN202122528636.1U patent/CN216402851U/en active Active
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