A passive electronic lock sample barrel

Abstract

A passive electronic lock sample barrel, the sample barrel has a barrel mouth, a locking mechanism is installed in the barrel cover, the locking mechanism includes a DC motor, the DC motor is fixedly installed on a bracket in the barrel cover, a shaft sleeve is rotatably connected to the bracket, the shaft sleeve is fixedly connected to the output shaft of the DC motor, two identical driving arms are fixedly connected to the shaft sleeve at 180 degrees apart, each driving arm is hinged with a connecting rod, the outer ends of the two connecting rods are intersected with a locking tongue, a guide hole is opened on the cylindrical shell, the locking tongue is slidably installed in the guide hole in the horizontal direction, the handle is T-shaped, the lower end of the vertical side of the T-shaped is fixedly connected to the limit cover, two annular electrodes are fixedly installed on the horizontal plane of the T-shaped handle, a cover opener is matched with the sample barrel, at least two spring conductive needles are installed on the cover opener, and the at least two spring conductive needles correspond to the two annular electrodes respectively. The barrel cover of the sample barrel does not need to be removed during use.

Description

Technical Field

[0001] The utility model relates to a sample barrel used in sample collection and preparation, in particular to a passive electronic lock sample barrel, belonging to the field of electromechanical technology. Background Art

[0002] In the fully automatic sampling system for incoming coal, the collected samples are transported, crushed, and divided into a sample collection bucket on the sample collector. Regarding the sample collector, the applicant has disclosed a variety of technical solutions in Chinese patents, such as CN105841999A, an optimized coal sample collector, CN105203349B, a sample bucket lockable information sample collector, and CN109443829B A coal sample collector, etc., each sample collector is generally provided with a plurality of sample barrels for storing coal samples from different sources, the sample barrel is provided with an IC card, and the sample collector is provided with a card reader / writer, and the relevant information of the corresponding sample in the sample barrel is written or read through the card reader / writer. The initial sample barrel is basically open, and the barrel mouth is not closed after sampling, and cheating may occur during the process, such as the sample being replaced manually, which causes deviations in the coal quality inspection results entering the factory, and brings hidden dangers to the production process and product quality. In order to prevent the occurrence of cheating incidents, locked sample barrels have become a research and development topic in this field. The initial sample barrel lock adopts a mechanical type, and the opening and closing structure requires the addition of an external actuator on the sample collector, which takes up space. , and it is generally locked after the last sampling. There is still a loophole for cheating. The applicant disclosed a closable sample collection barrel in Chinese patent application No. 2018220408591. An electronic lock is added to the barrel cover. The structure is compact and can be conveniently opened and locked for each sampling. However, the sample barrel was found to have the following problems in actual use; because the motor of the locking structure requires power, and the power supply battery is built into the barrel cover, the battery needs to be replaced frequently to open the barrel cover. On the one hand, frequent disassembly is required to open the barrel cover. On the other hand, frequent disassembly is likely to lead to poor sealing. After long-term use in a high-dust environment, external dust is easy to enter the interior of the equipment, and the mechanical structure and electronic devices of the equipment fail. Summary of the invention

[0003] The purpose of the utility model is to overcome the above problems existing in the current electronic lock sample barrel and provide a passive electronic lock sample barrel.

[0004] In order to achieve the purpose of the utility model, the following technical scheme is adopted: a passive electronic lock sample barrel, including a sample barrel and a barrel cover, the sample barrel has a barrel mouth, the barrel mouth is a shrinkage, a conical transition is adopted between the barrel mouth and the barrel body, the barrel cover is matched on the barrel mouth, the barrel cover includes a cylindrical shell that can be inserted into the barrel mouth and a limit cover fixedly connected to the cylindrical shell, a handle is fixedly connected to the limit cover, a locking mechanism is installed in the barrel cover, the locking mechanism includes a DC motor, the DC motor is fixedly installed on a bracket in the barrel cover, the bracket is fixedly installed in the barrel cover, a shaft sleeve is rotatably connected to the bracket, the shaft sleeve is fixedly connected to the output shaft of the DC motor, two identical drive arms are fixedly connected to the shaft sleeve at a distance of 180 degrees, and each drive arm is hinged There is a connecting rod, and the outer ends of the two connecting rods are hinged with a lock tongue. A guide hole is opened on the cylindrical shell, and the lock tongue is slidably installed in the guide hole in the horizontal direction. When the motor rotates to drive the lock tongue outward, the lock tongue extends out of the cylindrical shell, and when it is inward, the lock tongue retracts into the cylindrical shell. When the barrel cover is placed on the barrel mouth, the lock tongue corresponds to the conical transition position. The handle is T-shaped, and the lower end of the vertical side of the T-shape is fixedly connected to the limit cover. Two annular electrodes are fixedly installed on the horizontal plane of the T-shape. The two annular electrodes are respectively connected to the power supply end of the DC motor through the built-in wires. A cover opener is matched with the sample barrel, and at least two spring conductive needles are installed on the cover opener. The at least two spring conductive needles correspond to the two annular electrodes respectively, and the two spring conductive needles are connected to the power supply.

[0005] Furthermore, there are four spring conductive needles, and two spring conductive needles correspond to an annular electrode.

[0006] Furthermore, the cylindrical shell is a cone that is small at the bottom and large at the top, and a plurality of grooves in the vertical direction are provided on the side of the cone.

[0007] Furthermore, the horizontal surface of the T-shape is circular, the lower end surface of the cover opener is processed with a circular groove adapted to the circle, and the spring conductive needle is installed on the bottom of the circular groove.

[0008] The positive and beneficial technical effects of the utility model are: the locking mechanism on the sample barrel has a simple and reliable mechanical structure, and the power supply is external, the barrel cover does not need to be removed during use, and the cylindrical surface is relatively easy to fit into the barrel mouth. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is an overall schematic diagram of the utility model.

[0010] Figure 2 It is a schematic diagram of the barrel cover.

[0011] Figure 3 is a schematic diagram of the locking mechanism.

[0012] Figure 4 It is a schematic diagram of the cover opener.

[0013] Figure 5 It is a cross-sectional view of the utility model. DETAILED DESCRIPTION

[0014] In order to more fully explain the implementation of the utility model, implementation examples of the utility model are provided. These implementation examples are only for the purpose of illustrating the utility model and do not limit the scope of the utility model.

[0015] The present invention is further explained in detail in conjunction with the accompanying drawings, in which the following marks are: 1: barrel body; 2: conical transition; 3: limit cover; 4: T-shape; 5: cover opener; 6: cylindrical shell; 7: lock tongue; 8: annular electrode; 9: bracket; 10: DC motor; 11: bushing; 12: driving arm; 13: connecting rod; 14: circular groove; 15: spring conductive needle.

[0016] As shown in the accompanying drawings, a passive electronic lock sample barrel includes a sample barrel and a barrel cover. The sample barrel has a barrel mouth, which is a narrowed barrel mouth. A conical transition 2 is used between the barrel mouth and the barrel body 1. The barrel cover is fitted on the barrel mouth. The barrel cover includes a cylindrical shell 6 that can be inserted into the barrel mouth and a limit cover 3 fixedly connected to the cylindrical shell. The cylindrical shell is a cone that is small at the bottom and large at the top. A plurality of grooves in the upper and lower directions are opened on the side of the cone, so that the cylindrical shell is easy to insert into the barrel mouth.

[0017] The size of the limit cover is larger than the barrel mouth, and a handle is fixedly connected to the limit cover. A locking mechanism is installed in the barrel cover, and the locking mechanism includes a DC motor 10, which is fixedly installed on a bracket 9 in the barrel cover. The DC motor is equipped with a controller, and the DC motor can use a DC pulse motor or a servo motor. The bracket 9 is fixedly installed in the barrel cover, and a shaft sleeve 11 is rotatably connected to the bracket. When the barrel mouth faces upward, the shaft sleeve is in a vertical direction and the lock tongue is in a horizontal direction. The shaft sleeve 11 is fixedly connected to the output shaft of the DC motor, and two identical driving arms 12 are fixedly connected to the shaft sleeve at an interval of 180 degrees. A connecting rod 13 is hinged on each driving arm, and a lock tongue 7 is hinged on the outer ends of the two connecting rods. A guide hole is opened on the cylindrical shell 6, and the lock tongue is slidably installed in the guide hole in the horizontal direction. When the DC motor rotates to drive the lock tongue outward, the lock tongue extends out of the cylinder. When the barrel cover is placed on the barrel mouth, the lock tongue retracts into the cylindrical shell. When the barrel cover is placed on the barrel mouth, the lock tongue corresponds to the tapered transition part. The handle is T-shaped 4, and the lower end of the vertical side of the T is fixedly connected to the limit cover 3. Two annular electrodes 8 are fixedly installed on the horizontal plane of the T. The two annular electrodes are respectively connected to the power supply end of the DC motor through the built-in wires. The built-in fingers are inserted into the handle and the barrel cover. The sample barrel is matched with a cover opener 5. At least two spring conductive needles are installed on the cover opener. At least two spring conductive needles correspond to the two annular electrodes respectively. The two spring conductive needles are connected to the power supply. In this embodiment, there are four spring conductive needles, and two spring conductive needles correspond to one annular electrode. The horizontal plane of the T is circular, and the lower end surface of the cover opener 5 is processed with a circular groove 14 adapted to the circular shape, and the spring conductive needle 15 is installed on the bottom of the circular groove. The locking mechanism of the utility model is relatively simple and not easy to get stuck. And the execution speed is fast, and the precision requirements for matching between components are relatively low.

[0018] In the utility model, the DC motor is energized to drive the shaft sleeve to rotate, and the shaft sleeve drives the driving arm to rotate and drives the connecting rod to drive the locking tongue to slide in the guide hole, so that the locking tongue is extended and retracted to realize the opening and locking of the sample barrel. The controller of the DC motor and the positive and negative pole conversion device of the DC motor are both prior arts. The control of the DC motor for opening and locking the sample barrel in the utility model is the same as the control of the DC motor in Chinese patent application No. 2018220408591.

[0019] In the utility model, the cover opener can be used independently (for example, when the sample barrel needs to be opened after being sent to the laboratory). When used on the sample collector, the cover opener is installed at the action end of the lifting mechanism above a sample barrel position. By lifting the cover opener, the spring conductive needle can contact and leave the annular electrode, thereby realizing external power supply of the DC motor.

[0020] The passive electronic lock in the utility model refers to the DC motor whose power source is obtained from the outside, not from the inside of the barrel cover.

[0021] After describing the implementation mode of the utility model in detail, people familiar with the technology can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the scope of the technical solution of the utility model, and the utility model is not limited to the implementation mode of the examples given in the specification.

Claims

1. A passive electronic lock sample barrel, comprising a sample barrel and a barrel cover, wherein the sample barrel has a barrel mouth, the barrel mouth is a conical mouth, a conical transition is adopted between the barrel mouth and the barrel body, the barrel cover is matched on the barrel mouth, the barrel cover comprises a cylindrical shell that can be inserted into the barrel mouth and a limit cover fixedly connected to the cylindrical shell, a handle is fixedly connected to the limit cover, and a locking mechanism is installed in the barrel cover, characterized in that: The locking mechanism includes a DC motor, which is fixedly mounted on a bracket in the barrel cover, and the bracket is fixedly mounted in the barrel cover. A shaft sleeve is rotatably connected to the bracket, and the shaft sleeve is fixedly connected to the output shaft of the DC motor. Two identical driving arms are fixedly connected to the shaft sleeve at an interval of 180 degrees, and a connecting rod is hinged on each driving arm. A locking tongue is hinged on the outer ends of the two connecting rods. A guide hole is provided on the cylindrical shell, and the locking tongue is slidably mounted in the guide hole in the horizontal direction. When the motor rotates and drives the locking tongue outward, the locking tongue extends out of the cylindrical shell, and when it is inward, the locking tongue retracts into the cylindrical shell. When the barrel cover is placed on the barrel mouth, the locking tongue corresponds to the conical transition part. The handle is T-shaped, and the lower end of the vertical side of the T is fixedly connected to the limit cover. Two annular electrodes are fixedly mounted on the horizontal plane of the T, and the two annular electrodes are respectively connected to the power supply end of the DC motor through built-in wires. A cover opener is matched with the sample barrel, and at least two spring conductive needles are installed on the cover opener. The at least two spring conductive needles correspond to the two annular electrodes respectively, and the two spring conductive needles are connected to the power supply.

2. A passive electronic lock sample barrel according to claim 1, characterized in that: There are four spring conductive needles, and two spring conductive needles correspond to an annular electrode.

3. The passive electronic lock sample barrel according to claim 1, characterized in that: The cylindrical shell is a cone-shaped body that is smaller at the bottom and larger at the top, and a plurality of grooves in the up-and-down directions are arranged on the side surface of the cone.

4. The passive electronic lock sample barrel according to claim 1, characterized in that: The horizontal surface of the T-shape is circular, the lower end surface of the cover opener is processed with a circular groove adapted to the circle, and the spring conductive needle is installed on the groove bottom of the circular groove.

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