Locking device for door

Abstract

The utility model relates to the technical field of door locking equipment, in particular to a door locking device, which comprises a locking mechanism and a pull ring, the locking mechanism is arranged in a side plate and comprises a fixed plate fixed in the side plate, a telescopic cylinder is fixedly arranged on the fixed plate, and the pull ring is arranged on the telescopic cylinder. A telescopic air cylinder is arranged on the side plate, a pull ring is arranged on the telescopic air cylinder, a pull hook matched with the pull ring is hinged to the output end of the telescopic air cylinder, an insertion opening for the pull ring to be inserted is formed in the side plate, the pull hook is located on the lower portion of the pull ring, and when the telescopic air cylinder drives the pull hook to move inwards, the pull hook can hook the pull ring to move inwards, so that the combustion chamber is sealed through the door. By arranging the locking mechanism and the pull ring which are matched with each other, tensioning or releasing of the door is achieved, sealing performance of the door is improved, environmental pollution caused by leakage of internal smoke is prevented, adjustment of tightness of the door and the combustion chamber can be achieved through the telescopic air cylinder, and mobility of the door is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of door locking equipment, in particular to a door locking device. Background Art

[0002] The principle of the combustion method asphalt content tester is to put the asphalt mixture of known weight after heating and stirring into the high-temperature combustion chamber for combustion. During the combustion process, the balance actually weighs the asphalt mixture, calculates the weight lost by the asphalt combustion, and then calculates the percentage content of asphalt and the percentage of oil stone in real time, and the test ends automatically.

[0003] When the combustion method asphalt content tester is used, a large amount of smoke is generated in the combustion chamber. The existing door locks are all manually locked, which is inconvenient to open and close, and the door has poor sealing performance, which can easily cause the smoke in the combustion chamber to leak, not only causing heat loss in the combustion chamber, but also the leaked smoke pollutes the external environment and causes harm to the human body, which is a serious deficiency. Utility Model Content

[0004] In view of the above problems, the utility model provides a door locking device, which solves the problem that the existing doors have poor sealing performance and are prone to smoke leakage.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a door locking device, installed on a combustion method asphalt content tester, the combustion method asphalt content tester includes a main unit, the main unit is provided with a combustion chamber and a door cooperating with the combustion chamber to close the combustion chamber, side panels are provided on both sides of the combustion chamber, the inside of the side panels is hollow, the door locking device includes a locking mechanism and a pull ring, the locking mechanism is arranged in the side panel, including a fixed plate fixed inside the side panel, a driving member is fixed on the fixed plate, the output end of the driving member is hingedly provided with a pull hook cooperating with the pull ring, the pull ring is arranged on the side of the door opposite to the side panel, the side panel is provided with a socket for inserting the pull ring, the pull hook is located at the lower part of the pull ring, when the driving member drives the pull hook to move inward, the pull hook can hook the pull ring and move inward, so that the door is sealed to the combustion chamber.

[0006] As an optimization, the pull ring is U-shaped, and when the door and the combustion chamber are closed, the pull ring is placed inside the side panel.

[0007] As an optimization, the length of the portion of the pull ring placed inside the side panel is greater than 5 cm.

[0008] As an optimization, the hook is L-shaped, including a short section and a long section, a rotating shaft is provided between the long section and the end of the output end of the driving member, and a support block is provided at one end of the fixed plate close to the output end of the driving member for supporting the hook when the hook is hooked on the pull ring.

[0009] As an optimization, the support block is provided with a beveled edge.

[0010] As an optimization, the driving member is a telescopic cylinder.

[0011] The beneficial effects of the utility model are as follows: the utility model provides a door locking device, which, by arranging a locking mechanism and a pull ring that cooperate with each other, enables the telescopic cylinder on the locking mechanism to drive the pull hook to move inward or outward, acting on the pull ring to achieve the tightening or release of the door, thereby improving the sealing of the door and preventing internal smoke from leaking out and causing environmental pollution. The telescopic cylinder can also adjust the tightness of the closure of the door and the combustion chamber, thereby improving the mobility of the door, improving the convenience of the test personnel, and avoiding the influence of the vibration generated by opening and closing the door on the balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a combustion method asphalt content tester;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model in a combustion method asphalt content tester (with one side panel hidden);

[0014] Figure 3 It is a structural schematic diagram of the utility model.

[0015] Among them: 1. main engine, 2. door, 3. side panel, 4. combustion chamber, 5. locking mechanism, 6. pull ring, 7. fixing plate, 8. telescopic cylinder, 9. pull hook, 10. rotating shaft, 11. supporting block. DETAILED DESCRIPTION

[0016] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0017] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0018] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] like Figure 1-3 As shown, a door locking device is installed on a combustion method asphalt content tester, the combustion method asphalt content tester includes a main unit 1, the main unit 1 is provided with a combustion chamber 4 and a door 2 cooperating with the combustion chamber 4 for closing the combustion chamber 4, and the arrangement is the same as that of a conventional door 2, one side is hinged to the combustion chamber 4, and the other side is opened and closed with the combustion chamber 4; side panels 3 are provided on both sides of the combustion chamber 4, and the inside of the side panels 3 is hollow, the door 2 locking device includes a locking mechanism 5 and a pull ring 6, the locking mechanism 5 is arranged in the cavity inside the side panel 3, and includes a fixed plate 7 fixed inside the side panel 3, a driving member is fixed on the fixed plate 7, and the driving member is a telescopic cylinder 8 or an electric cylinder or an electric A magnetic cylinder and other structures that can achieve linear movement are both acceptable. The output end of the driving member is hingedly provided with a hook 9 that cooperates with the pull ring 6. The pull ring 6 is arranged on the side of the door 2 opposite to the side panel 3. The side panel 3 is provided with a socket for inserting the pull ring 6. The hook 9 is located at the lower part of the pull ring 6. When the telescopic cylinder 8 drives the hook 9 to move inward, the hook 9 can hook the pull ring 6 and move inward, so that the door 2 can be sealed to the combustion chamber 4. The stronger the pulling progress of the hook 9 on the pull ring 6, the greater the sealing strength between the door 2 and the combustion chamber 4. When the door 2 needs to be opened, the piston rod of the telescopic cylinder 8 is extended, and the hook 9 moves outward until it is separated from the pull ring 6, and the door 2 can be opened manually. The pull ring 6 is U-shaped, and when the door 2 and the combustion chamber 4 are close to being closed, the pull ring 6 is placed inside the side panel 3, and the length of the portion of the pull ring 6 placed inside the side panel 3 is greater than 5 cm. According to the convenience of use, in this embodiment, the length of the portion of the pull ring 6 placed inside the side panel 3 is set to 6 cm. The pull hook 9 is L-shaped, including a short section and a long section. A rotating shaft 10 is provided between the long section and the end of the output end of the telescopic cylinder 8. The end of the fixed plate 7 close to the output end of the telescopic cylinder 8 is provided with a support block 11 for supporting the pull hook 9 when the pull hook 9 is hooked on the pull ring 6, and the support block 11 is provided with a sloped edge.

[0020] By providing a locking mechanism 5 and a pull ring 6 that cooperate with each other, the telescopic cylinder 8 on the locking mechanism 5 drives the pull hook 9 to move inward or outward, acting on the pull ring 6 to achieve the tightening or release of the door 2, thereby improving the sealing of the door 2 and preventing the internal smoke from leaking out and causing environmental pollution. The telescopic cylinder 8 can also adjust the tightness of the door 2 and the combustion chamber 4, thereby improving the mobility of the door 2.

[0021] The above-mentioned specific implementation methods are only specific cases of the present utility model. The patent protection scope of the present utility model includes but is not limited to the product form and style of the above-mentioned specific implementation methods. Any appropriate changes or modifications made to them by ordinary technicians in the relevant technical field in accordance with the claims of the present utility model shall fall within the patent protection scope of the present utility model.

Claims

1. A door locking device, installed on a combustion method asphalt content tester, the combustion method asphalt content tester comprising a host, the host having a combustion chamber and a door cooperating with the combustion chamber to close the combustion chamber, side panels are provided on both sides of the combustion chamber, the side panels are hollow inside, and are characterized in that: The door locking device includes a locking mechanism and a pull ring. The locking mechanism is arranged in the side panel and includes a fixed plate fixed inside the side panel. A driving member is fixed on the fixed plate. A pull hook cooperating with the pull ring is hingedly provided at the output end of the driving member. The pull ring is arranged on the side of the door opposite to the side panel. A socket for inserting the pull ring is provided on the side panel. The pull hook is located at the lower part of the pull ring. When the driving member drives the pull hook to move inward, the pull hook can hook the pull ring and move inward, so that the door can seal the combustion chamber.

2. The door locking device according to claim 1, characterized in that: The pull ring is U-shaped, and when the door and the combustion chamber are closed, the pull ring is placed inside the side plate.

3. The door locking device according to claim 2, characterized in that: The length of the portion of the pull ring disposed inside the side panel is approximately 5 cm.

4. The door locking device according to claim 1, characterized in that: The hook is L-shaped, including a short section and a long section. A rotating shaft is provided between the long section and the end of the output end of the driving member. An end of the fixed plate close to the output end of the driving member is provided with a support block for supporting the hook when the hook is hooked on the pull ring.

5. The door locking device according to claim 4, characterized in that: The support block is provided with a sloped angle edge.

6. The door locking device according to claim 1, characterized in that: The driving member is a telescopic cylinder.

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