Locking suspension type static electricity discharging device with timing function

Abstract

The invention relates to the technical field of crude oil and dangerous chemical loading and unloading, in particular to a locking suspension type static electricity releasing device with a timing function, which comprises a bracket, a wire coil, a timer, a discharging cable and a locking mechanism, and a front-back rotating shaft is fixedly mounted on the inner side of the upper part of the bracket. The device is reasonable and compact in structure, when a discharging cable is pulled, the discharging cable drives the wire coil to rotate anticlockwise, when the upper side of the left portion of the pawl makes contact with the right side of the ratchet plate, the pawl is driven by the wire coil to turn over, and meanwhile the extension spring is pulled open; the pawl abuts against the inner wall of the ratchet groove under the action of the extension spring, when the pawl rotates to the position below the ratchet plate, the pawl is separated from the ratchet plate, and the extension spring is reset, so that the wire coil can be rotated in the clockwise direction, the pawl is not clamped with the ratchet groove when rotating clockwise along with the wire coil, and therefore the discharging cable can be wound and then taken back. The device has the characteristics of safety, labor saving, simplicity, convenience and high efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of loading and unloading crude oil and dangerous chemicals, and is a suspended static electricity release device with a locking belt and timing. Background Art

[0002] As the production, storage and transportation capacity of petroleum products continues to increase, hazardous chemicals need to be transported to transfer stations for loading and unloading. Vehicles transporting hazardous chemicals need to release the static electricity on the vehicle in advance at the unloading platform. Only after passing the test can they unload the oil at the unloading station. During the transfer and filling process of hazardous chemicals, the friction between oil molecules and between oil and other substances will produce static electricity hazards.

[0003] At present, on-site oil transport vehicles often use ordinary static electricity release wires at the loading and unloading platforms. Since the static electricity wires are placed on the ground and pulled back and forth and rubbed against the ground, they often break and get damaged. New wires must be replaced, which increases costs. At the same time, the oil and gas production design management specifications clearly require that the static electricity release time must reach the specified time, and the loading and unloading platform is an explosion-proof area. Drivers and on-site personnel are not allowed to bring electronic devices, so they cannot grasp the release time, resulting in insufficient static electricity release time and the inability to eliminate static electricity hazards. When the voltage increases to the limit, an explosion accident will occur. Summary of the invention

[0004] The present invention provides a suspended static electricity release device with a locking belt timing, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problems of wear and tear of wires during back and forth pulling during oil unloading of existing vehicles, and safety accidents caused by insufficient static electricity release time.

[0005] The technical solution of the present invention is achieved through the following measures: a suspended static discharge device with locking and timing, comprising a bracket, a wire drum, a timer, a discharge cable and a locking mechanism, a front-to-back rotating shaft is fixedly installed on the inner side of the upper part of the bracket, the outer side of the rotating shaft is rotatably installed with the inner side of the middle part of the wire drum, a front baffle is fixedly installed on the outer side of the front end of the wire drum, a rear baffle is fixedly installed on the outer side of the rear end of the wire drum, a locking mechanism is provided on the inner side of the front of the wire drum, the locking mechanism comprises a ratchet, a fixing plate, a tension spring and a ratchet plate, and the inner side of the front drum of the wire drum is fixedly installed with a front baffle plate. A circular fixed plate is fixedly installed on the outside of the rotating shaft, a fan-shaped ratchet plate is fixed on the outside of the left part of the fixed plate, a plurality of ratchet grooves are distributed at intervals along the circumferential direction on the outside of the ratchet plate, a ratchet is rotatably installed on the inside of the right part of the wire drum, a tension spring is installed between the ratchet and the inner side of the upper part of the wire drum, the ratchet can engage with the ratchet groove when the wire drum rotates counterclockwise, and the ratchet can rotate clockwise with the wire drum after passing the ratchet groove, the gap between the windings of the discharge cable is on the outside of the wire drum, and the timer is fixedly installed on the rear part of the bracket.

[0006] The following are further optimizations and / or improvements to the above technical solutions: A fixing seat can be fixedly installed on the inner side of the front of the wire drum, a pin shaft is fixedly installed on the left part of the fixing seat, the front part of the pin shaft and the rear part of the pawl are rotatably installed together, and a groove opening to the right and corresponding to the ratchet plate is provided on the right side of the pawl.

[0007] A front support arm can be fixedly installed on the inner side of the front part of the bracket corresponding to the front position of the front baffle, and a rear support arm with the same structure as the front support arm and symmetrically arranged can be fixedly installed on the inner side of the rear part of the bracket corresponding to the rear position of the rear baffle. Two connecting rods are fixedly installed at upper and lower intervals between the left part of the front support arm and the left part of the rear support arm corresponding to the upper right position of the front baffle, and the timer is fixedly installed on the rear side of the rear support arm.

[0008] Insulating plates can be installed on the outer sides of the front end and the rear end of the connecting rod corresponding to the position between the front supporting arm and the rear supporting arm, and an insulating sleeve is installed on the outer side of the connecting rod corresponding to the position between the insulating plates. The timer is a mechanical timer.

[0009] The inner side of the front part of the cable drum may be provided with a threading hole communicating with the inside and the outside. The first end of the discharge cable passes through the gap between the two connecting rods and is fixedly installed with a wiring clamp. The second end of the discharge cable is wrapped around the outer side of the cable drum for several turns and passes through the threading hole and is located on the inner side of the cable drum.

[0010] A spherical stopper may be fixedly installed on the outer side of the discharge cable at the position between the corresponding connecting rod and the connecting clamp, and the diameter of the stopper is not less than the distance between the two connecting rods.

[0011] The structure of the present invention is reasonable and compact. When the discharge cable is pulled, the discharge cable drives the wire drum to rotate counterclockwise. When the upper side of the left part of the ratchet pawl contacts the right side of the ratchet plate, the ratchet is turned over by the drive of the wire drum and the tension spring is pulled open at the same time. When the discharge cable is pulled to the target length, the ratchet pawl abuts against the inner wall of the ratchet groove under the action of the tension spring, and the ratchet groove clamps the ratchet pawl to fix the wire drum. When the ratchet pawl rotates to the bottom of the ratchet plate, the ratchet pawl and the ratchet plate are separated from each other, the tension spring is reset, and the ratchet pawl is reset after rotation. In this way, the wire drum can be rotated in the clockwise direction, and the ratchet pawl no longer engages with the ratchet groove when the wire drum rotates clockwise. In this way, the discharge cable can be wound and then retracted. The present invention has the characteristics of safety, labor saving, simplicity and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 This is a schematic diagram of the main structure of the first embodiment.

[0013] Attached Figure 2 It is a schematic diagram of the front cross-sectional structure of the first embodiment.

[0014] Attached Figure 3 It is a schematic diagram of the front cross-sectional structure when the ratchet pawl and the ratchet groove are engaged with each other in the first embodiment.

[0015] Attached Figure 4 It is a rear view structural schematic diagram of embodiment 1.

[0016] The codes in the accompanying drawings are: 1 is a bracket, 2 is a wire reel, 3 is a timer, 4 is a discharge cable, 5 is a rotating shaft, 6 is a front baffle, 7 is a rear baffle, 8 is a pawl, 9 is a fixing plate, 10 is a tension spring, 11 is a ratchet plate, 12 is a ratchet groove, 13 is a fixing seat, 14 is a pin shaft, 15 is a groove, 16 is a front support arm, 17 is a rear support arm, 18 is a connecting rod, 19 is an insulating plate, 20 is an insulating sleeve, 21 is a wire threading control hole, 22 is a wiring clamp, and 23 is a limiter. DETAILED DESCRIPTION

[0017] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0018] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0019] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1: As shown in the attached Figure 1 , 2 As shown in , 3 and 4, the suspended static discharge device with locking and timing comprises a bracket 1, a wire drum 2, a timer 3, a discharge cable 4 and a locking mechanism. A front-to-back rotating shaft 5 is fixedly installed on the inner side of the upper part of the bracket 1. The outer side of the rotating shaft 5 is rotatably installed together with the inner side of the middle part of the wire drum 2. A front baffle 6 is fixedly installed on the outer side of the front end of the wire drum 2. A rear baffle 7 is fixedly installed on the outer side of the rear end of the wire drum 2. A locking mechanism is provided on the inner side of the front of the wire drum 2. The locking mechanism comprises a ratchet 8, a fixing plate 9, a tension spring 10 and a ratchet plate 11. The inner side of the front disk of the wire drum 2 is fixedly installed on the outer side of the rotating shaft 5. A circular fixing plate 9 is arranged on the side, a fan-shaped ratchet plate 11 is fixed on the outer side of the left part of the fixing plate 9, and a plurality of ratchet grooves 12 are distributed at intervals along the circumferential direction on the outer side of the ratchet plate 11, a pawl 8 is rotatably installed on the inner side of the right part of the wire drum 2, and a tension spring 10 is installed between the pawl 8 and the inner side of the upper part of the wire drum 2, the pawl 8 can engage with the ratchet groove 12 when the wire drum 2 rotates in the counterclockwise direction, and the pawl 8 can rotate in the clockwise direction with the wire drum 2 after passing the ratchet groove 12, the gap between the windings of the discharge cable 4 is on the outer side of the wire drum 2, and the timer 3 is fixedly installed on the rear part of the bracket 1.

[0020] According to the requirements, the ratchet plate 11 is integrally arranged with the fixing plate 9, and the discharge cable 4 is an existing well-known technology. When in use, the first end of the discharge cable 4 is connected to the static electricity device to be released, and the second end of the discharge cable 4 is connected to the grounding device to realize the static electricity release operation. When the discharge cable 4 is pulled, the discharge cable 4 drives the wire drum 2 to rotate counterclockwise. When the upper left side of the pawl 8 contacts the right side of the ratchet plate 11, the pawl 8 flips under the drive of the wire drum 2, that is, the pawl 8 rotates in the counterclockwise direction, and the tension spring 10 is pulled open. After the pawl 8 flips, it continues to rotate along the outer side of the ratchet plate 11 under the drive of the wire drum 2. When the discharge cable 4 is pulled to the target length, the pawl 8 is connected to the ratchet plate 11 under the action of the tension spring 10. The inner walls of the groove 12 abut against each other, and the ratchet groove 12 clamps the pawl 8 to fix the wire drum 2. When the pawl 8 rotates to below the ratchet plate 11, the pawl 8 and the ratchet plate 11 are separated from each other, and the tension spring 10 is reset. At the same time, the pawl 8 is reset after rotating, so that the wire drum 2 can be rotated in the clockwise direction. When the pawl 8 rotates clockwise with the wire drum 2, it is no longer engaged with the ratchet groove 12, and the discharge cable 4 can be wound and then retracted. By setting the timer 3, it is convenient to observe the static electricity release operation time and improve work efficiency. The present invention has a reasonable and compact structure and is easy to use. It has the characteristics of safety, labor saving, simplicity and high efficiency.

[0021] According to actual needs, the above-mentioned suspended static electricity release device with locking belt timing can be further optimized and / or improved: Embodiment 2: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2 As shown in , 3, a fixing seat 13 is fixedly installed on the inner side of the front part of the wire drum 2, and a pin shaft 14 is fixedly installed on the left part of the fixing seat 13. The front part of the pin shaft 14 and the rear part of the ratchet 8 are rotatably installed together, and a groove 15 opening to the right and corresponding to the ratchet plate 11 is provided on the right side of the ratchet 8. During use, the fixing seat 13 is provided to facilitate the installation of the ratchet 8, and the groove 15 opening to the right and corresponding to the ratchet plate 11 is provided on the right side of the ratchet 8. In this way, when the ratchet 8 rotates with the wire drum 2, it can avoid the phenomenon that the ratchet 8 is separated from the ratchet plate 11 after swinging back and forth, so that the outer side of the ratchet plate 11 is always located in the groove 15.

[0022] Embodiment 3: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2As shown in , 3, and 4, a front support arm 16 is fixedly installed on the inner side of the front part of the bracket 1 corresponding to the front position of the front baffle 6, and a rear support arm 17 with the same structure as the front support arm 16 and symmetrically arranged is fixedly installed on the inner side of the rear part of the bracket 1 corresponding to the rear position of the rear baffle 7. Two connecting rods 18 are fixedly installed at intervals between the left part of the front support arm 16 and the left part of the rear support arm 17 corresponding to the upper right position of the front baffle 6, and the timer 3 is fixedly installed on the rear side of the rear support arm 17. When in use, the first end of the discharge cable 4 is connected to the electrostatic device to be discharged after passing through the gap between the two connecting rods 18, and the second end of the discharge cable 4 is connected to the grounding device. By setting the front support arm and the rear support arm 17, it is convenient to carry the cable drum 2 and also convenient to install the timer 3.

[0023] Embodiment 4: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2 As shown in Figures 3 and 4, the outer side of the front end and the outer side of the rear end of the connecting rod 18 corresponding to the position between the front support arm 16 and the rear support arm 17 are both installed with insulating plates 19, and the outer side of the connecting rod 18 corresponding to the position between the insulating plates 19 is covered with an insulating sleeve 20, and the timer 3 is a mechanical timer. During use, the insulating plate 19 and the insulating sleeve 20 can improve the insulation performance between the discharge cable 4 and the connecting rod 18, and can also reduce the wear between the discharge cable 4 and the connecting rod 18 when the discharge cable 4 is retracted and released, thereby extending the service life. The timer 3 is a mechanical timer, which can avoid accidents caused by static electricity generated when the timer 3 is working.

[0024] Embodiment 5: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2 As shown in , 3, and 4, a threading hole 21 communicating with the inside and outside is provided on the inner side of the front of the cable drum 2. The first end of the discharge cable 4 passes through the gap between the two connecting rods 18 and is fixedly installed with a wiring clamp 22. The second end of the discharge cable 4 is wound around the outer side of the cable drum 2 for several turns and passes through the threading hole 21 and is located on the inner side of the cable drum 2. According to the requirements, the wiring clamp 22 is an existing well-known alligator clip. During use, by providing the wiring clamp 22, it is convenient to quickly connect with the electrostatic device to be discharged, and the installation is convenient. By providing the threading hole 21, it is convenient to connect the second end of the discharge cable 4 with the grounding device.

[0025] Embodiment 6: As an optimization of the above embodiment, as shown in the attached Figure 1 , 2 As shown in FIGS. 3 and 4, a spherical stopper 23 is fixedly installed on the outer side of the discharge cable 4 corresponding to the position between the connecting rod 18 and the wiring clamp 22, and the diameter of the stopper 23 is not less than the distance between the two connecting rods 18. According to the requirements, the material of the stopper 23 is an insulating material. In the process of use, through such a setting, the discharge cable 4 can be prevented from being entangled on the cable drum 2 when being recovered, so that it is convenient to quickly pull out the cable through the wiring clamp 22 next time.

[0026] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

[0027] The use process of the best embodiment of the present invention is as follows: when on site, the bracket 1 is fixedly installed at the target position so that the cable drum 2 is separated from the ground. During operation, the wiring clamp 22 is pulled by hand, thereby driving the cable drum 2 to rotate in the counterclockwise direction to realize the wire laying operation. When the discharge cable 4 is stretched to the target length, the ratchet 8 and the ratchet groove 12 are engaged with each other, so that the cable drum 2 stops rotating.

[0028] When releasing static electricity, you only need to clamp the terminal clamp 22 at a designated place to conduct the static electricity to the ground through the grounding device. The operation time can be set by the timer 3 according to the length of the operation time. When the operation time is over, the internal alarm of the timer 3 sounds continuously, and the operator can stop the discharge operation.

[0029] Remove the wiring clamp 22, and the operator pulls the wiring clamp 22 again, so that the pawl 8 rotates over the ratchet plate 11, and the pawl 8 is reset under the action of the tension spring 10. The tension spring 10 will also drive the wire drum 2 to rotate clockwise during the resetting process. When the wire drum 2 rotates clockwise, the discharge cable 4 is wound around it, thereby realizing the wire winding operation. When the limiter 23 contacts the insulating sleeve 20, the first end of the discharge cable 4 can be prevented from being wound around the outside of the wire drum 2, which is convenient for subsequent static electricity release operations.

Claims

1. A suspended static electricity release device with locking and timing, characterized in that The invention comprises a bracket, a wire drum, a timer, a discharge cable and a locking mechanism. A front-to-back rotating shaft is fixedly installed on the inner side of the upper part of the bracket. The outer side of the rotating shaft is rotatably installed together with the inner side of the middle part of the wire drum. A front baffle is fixedly installed on the outer side of the front end of the wire drum, and a rear baffle is fixedly installed on the outer side of the rear end of the wire drum. A locking mechanism is provided on the inner side of the front part of the wire drum. The locking mechanism comprises a pawl, a fixing plate, a tension spring and a ratchet plate. A circular fixing plate fixedly installed on the outer side of the rotating shaft is provided on the inner side of the front disk of the wire drum. A fan-shaped ratchet plate is fixed on the outer side of the left part of the fixing plate. A plurality of ratchet grooves are distributed at intervals along the circumferential direction on the outer side of the ratchet plate. A pawl is rotatably installed on the inner side of the right part of the wire drum. A tension spring is installed between the pawl and the inner side of the upper part of the wire drum. The pawl can engage with the ratchet groove when the wire drum rotates counterclockwise, and the pawl can rotate clockwise with the wire drum after passing the ratchet groove. The gap between the windings of the discharge cable is on the outer side of the wire drum, and the timer is fixedly installed at the rear of the bracket.

2. According to the locking belt timing suspended static release device of claim 1, it is characterized in that a fixed seat is fixedly installed on the inner side of the front part of the wire drum in the gap between them, a pin shaft is fixedly installed on the left part of the fixed seat, the front part of the pin shaft and the rear part of the pawl are rotatably installed together, and a groove opening to the right and corresponding to the ratchet plate is provided on the right side of the pawl.

3. The suspended static electricity release device with locking belt timing according to claim 1 or 2, characterized in that A front support arm is fixedly installed on the inner side of the front part of the bracket corresponding to the front position of the front baffle, and a rear support arm with the same structure as the front support arm and symmetrically arranged is fixedly installed on the inner side of the rear part of the bracket corresponding to the rear position of the rear baffle. Two connecting rods are fixedly installed at upper and lower intervals between the left part of the front support arm and the left part of the rear support arm corresponding to the upper right position of the front baffle, and a timer is fixedly installed on the rear side of the rear support arm.

4. The suspended static electricity release device with locking belt timing according to claim 3 is characterized in that Insulating plates are installed on the outer sides of the front end and the rear end of the connecting rod corresponding to the position between the front supporting arm and the rear supporting arm, and an insulating sleeve is installed on the outer side of the connecting rod corresponding to the position between the insulating plates. The timer is a mechanical timer.

5. According to claim 1, 2 or 4, the suspended static electricity release device with a locking belt timing is characterized in that a wire threading hole connected inside and outside is provided on the inner side of the front of the wire drum in the gap between the two connecting rods, and the first end of the discharge cable is fixedly installed with a wiring clamp after passing through the gap between the two connecting rods, and the second end of the discharge cable is wrapped around the outside of the wire drum for several turns and passed through the wire threading hole and then located on the inside of the wire drum.

6. According to the locking belt timing suspended static release device as described in claim 3, it is characterized in that a wire threading hole connecting the inside and the outside is provided on the inner side of the front of the wire drum in the gap between the two connecting rods, and the first end of the discharge cable is fixedly installed with a wiring clamp after passing through the gap between the two connecting rods, and the second end of the discharge cable is wrapped around the outside of the wire drum for several turns and passes through the wire threading hole and is located on the inside of the wire drum.

7. The suspended static electricity release device with locking belt timing according to claim 5 is characterized in that A spherical stopper is fixedly installed on the outer side of the discharge cable corresponding to the position between the connecting rod and the wiring clamp, and the diameter of the stopper is not less than the distance between the two connecting rods.

8. The suspended static electricity release device with locking belt timing according to claim 6 is characterized in that A spherical stopper is fixedly installed on the outer side of the discharge cable corresponding to the position between the connecting rod and the wiring clamp, and the diameter of the stopper is not less than the distance between the two connecting rods.

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