Abnormal rising protection mechanism and moving device with lifting conveying frame

Abstract

The utility model discloses an abnormal rising protection mechanism which comprises a support, a rocker arm, a chain, a microswitch and a transmission mechanism, and the support is used for being fixedly connected with a base body of a device to be protected. The rocker arm is hinged to the support through a rotating shaft so that the rocker arm can rotate around the rotating shaft along the vertical plane, and the rocker arm is provided with a hook. The two ends of the lock chain are connected with a base body of the device to be protected and the lifting part respectively, and the hook can be hung in any chain hole of the lock chain; the on-off of the microswitch is used for controlling the start and stop of the lifting part of the to-be-protected device; the rocker arm is connected with the microswitch through the transmission mechanism, and when the lifting part of the device to be protected ascends abnormally, the chain and the hook are tensioned, so that the hook is lifted, the rocker arm rotates along the vertical plane, and the microswitch is turned off through the transmission mechanism. The problem that a conveying frame ascends abnormally and collides an airplane can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of insulating board treatment, in particular to an abnormal rising protection mechanism and a mobile device with a lifting conveyor. Background Technique

[0002] When loading and unloading at the airport, due to the certain height of the aircraft cargo hold, it is generally necessary to use a mobile device with a lifting conveyor to assist in loading goods. During use, the mobile device is moved to the vicinity of the cargo hold, and then the conveyor is raised until the end of the conveyor contacts and is flush with the bottom plate of the cargo hold, so as to complete the docking of the two, and achieve the purpose of gradually conveying goods into the aircraft cargo hold through the conveyor.

[0003] After the conveyor is docked with the cargo hold, due to reasons such as human misoperation, hydraulic system failure or electrical system failure, it is possible to cause the conveyor to rise abnormally and rub against the aircraft. Content of the Utility Model

[0004] The purpose of the utility model is to provide an abnormal rising protection mechanism to solve the problem of the conveyor rising abnormally and rubbing against the aircraft.

[0005] The utility model is realized by the following technical solutions:

[0006] An abnormal rising protection mechanism includes a bracket, and the bracket is used for fixedly connecting with the base body of the device to be protected; a rocker arm, the rocker arm is pivotally hinged to the bracket through a rotating shaft, so that the rocker arm can rotate along a vertical plane with the rotating shaft as the axis, and the rocker arm is provided with a hook; a chain, both ends of the chain are respectively connected with the base body of the device to be protected and the lifting part, and the hook can be hooked with any one of the chain holes of the chain; a microswitch, the opening and closing of the microswitch are used to control the start and stop of the lifting part of the device to be protected; a transmission mechanism, the rocker arm is connected with the microswitch through the transmission mechanism. When the lifting part of the device to be protected rises abnormally, the chain is tightened with the hook, so that the hook is lifted, so that the rocker arm rotates along the vertical plane, and the microswitch is closed through the transmission mechanism.

[0007] Optionally, a spring is vertically arranged on the bracket, the top end of the spring is connected with the bracket, and the bottom end is connected with the rocker arm.

[0008] Optionally, the bracket includes a vertical plate and a horizontal plate. The bottom of the vertical plate is used for fixedly connecting with the base of the device to be protected, and the horizontal plate is connected to the top of the vertical plate. The rocker arm is pivotally connected to the vertical plate through the rotating shaft, and the rotating shaft is perpendicular to the vertical plate. A pressure rod is vertically and slidably connected to the horizontal plate, and the bottom end of the pressure rod abuts against the top surface of the rocker arm. The spring is sleeved on the pressure rod and clamped between the horizontal plate and the rocker arm, and the bottom end of the spring is connected to the bottom end of the pressure rod.

[0009] Optionally, a pressure disc is coaxially connected to the bottom end of the pressure rod, and the diameter of the pressure disc is larger than the outer diameter of the spring. The spring is clamped between the pressure disc and the horizontal plate.

[0010] Optionally, a pressure bearing groove is recessed in the top of the rocker arm, and the size of the pressure bearing groove is slightly larger than the diameter of the pressure disc. The pressure disc fits against the bottom of the pressure bearing groove.

[0011] Optionally, the rocker arm is L-shaped. The rotating shaft and the hook are respectively arranged at both ends of the rocker arm, and the end of the rocker arm with the hook faces upward. The transmission mechanism is arranged at the turning point of the rocker arm.

[0012] Optionally, the right-angle side of the rocker arm with the rotating shaft can be flush with the bottom of the vertical plate, and when they are flush, the microswitch is in the closed state.

[0013] Optionally, the microswitch is pivotally connected with a control block. When the control block is in the closed position, the microswitch is in the closed state. When the control block is in the open position, the microswitch is in the open state. The transmission mechanism includes a connecting rod and a transmission shaft. The connecting rod is slidably connected with the control block, and one end of the connecting rod is pivotally connected to the turning point of the rocker arm through the transmission shaft. When the right-angle side of the rocker arm is flush with the bottom of the vertical plate, the control block is in the open position. When the connecting rod rotates to the horizontal state, the control block is in the closed position.

[0014] Optionally, it further includes a receiving cylinder which is vertically arranged and fixedly connected to the bracket. The bottom of the receiving cylinder is closed, and the top of the receiving cylinder is open and is set in a flared shape. The receiving cylinder is used for receiving the chain. One end of the chain is connected to the bottom plate of the receiving cylinder, and the other end is connected to the lifting part of the device to be protected.

[0015] A mobile device with a lifting conveyor frame comprises: a base, the mobile base is provided with a moving mechanism; a lifting part, the lifting part is arranged above the base, and the lifting part can be lifted and lowered compared with the base; any one of the above-mentioned abnormal rise protection mechanisms, the bracket is arranged at the top of the base, and the two ends of the chain are respectively connected to the top of the base and the bottom of the lifting part.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] The abnormal rise protection mechanism provided by the utility model provides an installation foundation by setting a bracket, and enables the mechanism to be fixedly connected to the base of the device to be protected. On this basis, a chain is set so that its two ends are respectively connected to the base of the device to be protected and the lifting part. When the lifting part rises, one end of the chain also rises accordingly, and the other end naturally droops, so that the lifting part and the base always maintain a structural connection; on this basis, a rocker arm is set so that it is hinged with the bracket through a rotating shaft, so that it can rotate along a vertical plane, and a hook is set thereon, so that the hook can be hung with any chain hole of the chain. After hanging, if the lifting part rises abnormally, it will inevitably drive the chain. The lifting part will rise, and then the rocker arm will inevitably be driven to rotate along the vertical plane through the hook; on this basis, the microswitch and the transmission mechanism are set to connect the microswitch to the control system of the lifting part, and the transmission mechanism is used to connect the microswitch to the rocker arm transmission, so that the opening and closing of the microswitch is controlled by the shaking of the rocker arm, and then the start and stop of the lifting part are controlled; when the lifting part rises abnormally, it drives the microswitch to close in sequence through the chain, hook, rocker arm and transmission mechanism, so that the lifting part stops quickly to prevent the lifting part from continuing to rise and causing friction with the aircraft; through the mutual cooperation of the above-mentioned features, the abnormal rise protection mechanism can effectively solve the problem of abnormal rise of the conveyor frame and friction with the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0019] Figure 1 A side view schematic diagram of an abnormal rise protection mechanism provided by an embodiment of the utility model;

[0020] Figure 2 A schematic side view of the abnormal rise protection mechanism provided by the embodiment of the utility model after the hook and the chain are hooked together;

[0021] Figure 3 A schematic side view of a mobile device with a lifting conveyor frame provided in an embodiment of the utility model;

[0022] Figure 4The side view schematic diagram after the hook of the mobile device with a lifting conveyor rack provided by the embodiment of the present utility model is engaged with the chain.

[0023] Marks in the attached drawings and corresponding component names:

[0024] 1 - Base; 2 - Lifting part; 10 - Bracket; 101 - Vertical plate; 102 - Horizontal plate; 11 - Spring; 12 - Pressing rod; 121 - Pressing disc; 20 - Rocker arm; 201 - Bearing groove; 21 - Rotating shaft; 22 - Hook; 30 - Chain; 40 - Microswitch; 41 - Control block; 42 - Connecting rod; 43 - Transmission shaft; 50 - Receiving cylinder. Specific implementation manners

[0025] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the embodiments and the attached drawings. The illustrative embodiments and descriptions thereof of the present utility model are only used to explain the present utility model and shall not be construed as a limitation to the present utility model.

[0026] Embodiment

[0027] Please refer to Figure 1 and Figure 2 . This embodiment provides an abnormal rising protection mechanism, including a bracket 10, and the bracket 10 is used for fixedly connecting with the base of the device to be protected; second, a rocker arm 20, and the rocker arm 20 is axially hinged with the bracket 10 through a rotating shaft 21, so that the rocker arm 20 can rotate along a vertical plane with the rotating shaft 21 as the axis, and the rocker arm 20 is provided with a hook 22; third, a chain 30, and both ends of the chain 30 are respectively connected with the base and the lifting part of the device to be protected, and the hook 22 can be engaged with any one of the chain holes of the chain 30; fourth, a microswitch 40, and the opening and closing of the microswitch 40 are used to control the start and stop of the lifting part of the device to be protected; fifth, a transmission mechanism, and the rocker arm 20 is connected with the microswitch 30 through the transmission mechanism. When the lifting part of the device to be protected rises abnormally, the chain 30 is tightened with the hook 22, so that the hook 22 is lifted, so that the rocker arm 20 rotates along the vertical plane, and the microswitch 40 is closed through the transmission mechanism.

[0028] The abnormal rise protection mechanism provided in this embodiment provides an installation foundation by setting a bracket 10, and enables the mechanism to be fixedly connected to the base of the device to be protected. On this basis, a chain 30 is set so that its two ends are respectively connected to the base of the device to be protected and the lifting part. When the lifting part rises, one end of the chain 30 also rises, and the other end naturally droops, so that the lifting part and the base always maintain a structural connection; on this basis, a rocker arm 20 is set so that it is hinged with the bracket 10 through a rotating shaft 21, so that it can rotate along a vertical plane, and a hook 22 is set thereon, and the hook 22 can be hung with any chain hole of the chain 30. After hanging, if the lifting part rises abnormally, it will inevitably drive the chain 30 to rise. , and then the hook 22 will inevitably drive the rocker arm 20 to rotate along the vertical plane; on this basis, by setting a micro switch 40 and a transmission mechanism, the micro switch 40 is connected to the control system of the lifting part, and the transmission mechanism is used to connect the micro switch 40 to the rocker arm 20, so that the opening and closing of the micro switch 40 is controlled by the shaking of the rocker arm 20, and then the start and stop of the lifting part are controlled; when the lifting part rises abnormally, it drives the micro switch 40 to close in sequence through the chain 30, the hook 22, the rocker arm 20, and the transmission mechanism, so that the lifting part stops quickly to prevent the lifting part from continuing to rise and causing friction with the aircraft; through the mutual cooperation of the above-mentioned features, the abnormal rise protection mechanism can effectively solve the problem of abnormal rise of the conveyor frame and friction with the aircraft.

[0029] In order to prevent the rocker arm 20 from rotating easily under the action of other external forces, the bracket 10 is vertically provided with a spring 11 , the top end of the spring 11 is connected to the bracket 10 , and the bottom end is connected to the rocker arm 20 .

[0030] By providing the spring 11, the rocker arm 20 can be elastically supported. When it rotates along the vertical plane, it will squeeze the spring 11. Similarly, the squeezed spring 11 will exert pressure on the rocker arm 20 in the opposite direction to resist and hinder its rotation.

[0031] In order to further explain the specific structure of the bracket 10 and avoid unnecessary bending of the spring 11 and only compress it along the axial direction, the bracket 10 includes a vertically arranged vertical plate 101 and a horizontally arranged horizontal plate 102, the bottom of the vertical plate 101 is used to be fixedly connected to the base of the device to be protected, and the horizontal plate 102 is connected to the top of the vertical plate 101; the rocker arm 20 is hinged to the vertical plate 101 through the rotating shaft 21, and the rotating shaft 21 is vertically arranged to the vertical plate 101; the horizontal plate 102 is vertically slidably connected to the pressure rod 12, and the bottom end of the pressure rod 12 abuts against the top surface of the rocker arm 20; the spring 11 is sleeved on the pressure rod 12, and the spring 11 is clamped between the horizontal plate 102 and the rocker arm 20, and the bottom end of the spring 11 is connected to the bottom end of the pressure rod 12.

[0032] To increase the contact area between the pressure rod 12 and the rocker arm 20, prevent the misalignment between the pressure rod 12 and the rocker arm 20, and at the same time limit and support the spring 11, a pressure plate 121 is coaxially connected to the bottom end of the pressure rod 12. The diameter of the pressure plate 121 is larger than the outer diameter of the spring 11, and the spring 11 is clamped between the pressure plate 121 and the cross plate 102.

[0033] To further increase the contact area between the rocker arm 20 and the pressure plate 121, a bearing groove 201 is recessed at the top of the rocker arm 20. The size of the bearing groove 201 is slightly larger than the diameter of the pressure plate 121, and the pressure plate 121 is in contact with the bottom of the bearing groove 201.

[0034] To further explain the specific structure of the rocker arm 20, the rocker arm 20 is L-shaped; the rotating shaft 21 and the hook 22 are respectively arranged at both ends of the rocker arm 20, and the end of the rocker arm 20 where the hook 22 is provided faces upward; the transmission mechanism is arranged at the turning point of the rocker arm 20.

[0035] Through the above settings, while facilitating the rotation of the rocker arm 20, the end where the hook 22 is provided is made to face upward as much as possible, which is convenient for engaging with the chain 30.

[0036] To position and support the rocker arm 20, the right-angle side of the rocker arm 20 where the rotating shaft 21 is provided can be flush with the bottom of the vertical plate 101, and when they are flush, the micro switch 40 is in the closed state.

[0037] To further describe the specific structure of the transmission mechanism, the micro switch 40 is pivotally connected with a control block 41. When the control block 41 is in the closed position, the micro switch 40 is in the closed state. When the control block 41 is in the open position, the micro switch 40 is in the open state; the transmission mechanism includes a connecting rod 42 and a transmission shaft 43. The connecting rod 42 is slidably connected with the control block 41, and one end of the connecting rod 42 is pivotally connected with the turning point of the rocker arm 20 through the transmission shaft 43; when the right-angle side of the rocker arm 20 is flush with the bottom of the vertical plate 101, the control block 41 is in the open position; when the connecting rod 42 rotates to the horizontal state, the control block 41 is in the closed position.

[0038] To prevent the chain 30 from being randomly piled up, the abnormal rise protection mechanism further includes a receiving cylinder 50. The receiving cylinder 50 is vertically arranged and fixedly connected with the bracket 10. The bottom of the receiving cylinder 50 is closed, the top of the receiving cylinder 50 is open and is arranged in a flared shape. The receiving cylinder 50 is used to receive the chain 30; one end of the chain 30 is connected to the bottom plate of the receiving cylinder 50, and the other end is connected to the lifting part of the device to be protected.

[0039] Please atFigure 1 and Figure 2 on the basis of further referring to Figure 3 and Figure 4 In this embodiment, a moving device with a lifting conveyor is provided, including: a base body 1, the moving base body 1 is provided with a moving mechanism; secondly, a lifting part 2 is included, the lifting part 2 is arranged above the base body 1, and the lifting part 2 can lift relative to the base body 1; thirdly, any one of the above abnormal rising protection mechanisms is included, the bracket 10 is arranged on the top of the base body 1, and both ends of the chain 30 are respectively connected to the top of the base body 1 and the bottom of the lifting part 2.

[0040] The above specific embodiments further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An abnormal rise protection mechanism, characterized in that: include: A bracket (10), the bracket (10) being used for being fixedly connected to a base body of the device to be protected; A rocker arm (20), the rocker arm (20) being hinged to the bracket (10) via a rotating shaft (21), so that the rocker arm (20) can rotate along a vertical plane with the rotating shaft (21) as an axis, and the rocker arm (20) is provided with a hook (22); A chain (30), the two ends of which are respectively connected to the base and the lifting part of the device to be protected, and the hook (22) can be hooked with any chain hole of the chain (30); A micro switch (40), the opening and closing of the micro switch (40) is used to control the start and stop of the lifting part of the device to be protected; The rocker arm (20) is connected to the micro switch (40) through the transmission mechanism. When the lifting part of the device to be protected rises abnormally, the chain (30) and the hook (22) are tightened to lift the hook (22) so that the rocker arm (20) rotates along a vertical plane, and the micro switch (40) is closed through the transmission mechanism.

2. The abnormal rise protection mechanism according to claim 1, characterized in that: The bracket (10) is vertically provided with a spring (11), the top end of the spring (11) is connected to the bracket (10), and the bottom end is connected to the rocker arm (20).

3. The abnormal rise protection mechanism according to claim 2, characterized in that: The bracket (10) comprises a vertically arranged vertical plate (101) and a horizontally arranged horizontal plate (102), wherein the bottom of the vertical plate (101) is used to be fixedly connected to a base body of the device to be protected, and the horizontal plate (102) is connected to the top of the vertical plate (101); The rocker arm (20) is hinged to the vertical plate (101) via the rotating shaft (21), and the rotating shaft (21) and the vertical plate (101) are arranged vertically; The horizontal plate (102) is vertically slidably connected to a pressure rod (12), and the bottom end of the pressure rod (12) abuts against the top surface of the rocker arm (20); The spring (11) is sleeved on the pressure rod (12), the spring (11) is clamped between the transverse plate (102) and the rocker arm (20), and the bottom end of the spring (11) is connected to the bottom end of the pressure rod (12).

4. The abnormal rise protection mechanism according to claim 3, characterized in that: The bottom end of the pressure rod (12) is coaxially connected to a pressure plate (121), the diameter of the pressure plate (121) is larger than the outer diameter of the spring (11), and the spring (11) is sandwiched between the pressure plate (121) and the transverse plate (102).

5. The abnormal rise protection mechanism according to claim 4, characterized in that: A pressure-bearing groove (201) is recessed on the top of the rocker arm (20), the size of the pressure-bearing groove (201) is slightly larger than the diameter of the pressure plate (121), and the pressure plate (121) fits with the bottom of the pressure-bearing groove (201).

6. The abnormal rise protection mechanism according to claim 5, characterized in that: The rocker arm (20) is L-shaped; The rotating shaft (21) and the hook (22) are respectively arranged at two ends of the rocker arm (20), and one end of the rocker arm (20) provided with the hook (22) faces upward; The transmission mechanism is arranged at the turning point of the rocker arm (20).

7. The abnormal rise protection mechanism according to claim 6, characterized in that: The right-angled side of the rotating shaft (21) provided on the rocker arm (20) can be flush with the bottom of the vertical plate (101), and when flush, the micro switch (40) is in a closed state.

8. The abnormal rise protection mechanism according to claim 7, characterized in that: The micro switch (40) shaft has a control block (41), when the control block (41) is in a closed position, the micro switch (40) is in a closed state, and when the control block (41) is in an open position, the micro switch (40) is in an open state; The transmission mechanism comprises a connecting rod (42) and a transmission shaft (43); the connecting rod (42) is slidably connected to the control shift block (41); one end of the connecting rod (42) is connected to the rocker arm (20) through the transmission shaft (43) at a turning point; When the right-angled side of the rocker arm (20) is flush with the bottom of the vertical plate (101), the control dial block (41) is located in the open position; When the connecting rod (42) rotates to a horizontal state, the control dial block (41) is located in a closed position.

9. The abnormal rise protection mechanism according to claim 1, characterized in that: It also includes a receiving tube (50), the receiving tube (50) is vertically arranged and fixedly connected to the bracket (10), the bottom of the receiving tube (50) is closed, the top of the receiving tube (50) is open and arranged in a trumpet shape, and the receiving tube (50) is used to receive the chain (30); One end of the chain (30) is connected to the bottom plate of the receiving tube (50), and the other end is connected to the lifting part of the device to be protected.

10. A mobile device with a lifting conveyor frame, characterized in that: include: A base (1), wherein the base (1) is provided with a moving mechanism; A lifting part (2), the lifting part (2) being arranged above the base (1), and the lifting part (2) being capable of being lifted or lowered relative to the base (1); In the abnormal rise protection mechanism described in any one of claims 1 to 9, the bracket (10) is arranged at the top of the base (1), and the two ends of the chain (30) are respectively connected to the top of the base (1) and the bottom of the lifting part (2).

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