A horizontal force detection and protection device for the end of an embarkation trestle

Abstract

The present invention discloses a horizontal force detection and protection device for the end of an embarkation trestle, which includes a fixed guiding mechanism, a head telescopic mechanism, and a pressure detection mechanism; the fixed guiding mechanism is arranged at the end of the trestle walkway platform, and the fixed guiding mechanism includes a fixed frame and an anti-collision rubber strip; a guiding sleeve and a buffer sleeve are arranged on the fixed frame; the head telescopic mechanism includes a telescopic frame, an anti-collision rubber strip, a spring buffer mechanism, and a balance beam; a guiding circular tube is arranged on the telescopic frame, and a stop assembly is arranged on one side of the guiding circular tube close to the trestle walkway platform; the spring buffer mechanism passes through the buffer sleeve and is connected to the telescopic frame; the balance beam is arranged on one side close to the trestle walkway platform; the pressure detection mechanism is arranged on the trestle walkway platform, and its position on the trestle walkway platform corresponds to the position of the balance beam. The present invention makes the detection of force more convenient and simple by directly detecting the horizontal force at the end of the embarkation trestle, and there is no need to check the initial setting value before each use.

Description

Technical Field

[0001] The present invention relates to the technical field of trestle equipment, and particularly relates to a horizontal force detection and protection device for the end of an embarkation trestle. Background Art

[0002] An embarkation trestle is a device used to achieve the rapid embarkation of personnel and goods. A horizontal force detection and protection device for detecting the horizontal force at the end of the trestle is usually provided at its end. During use, the wire rope is adjusted by a winch mechanism to keep the horizontal force at the end constant, ensuring the safe and stable operation of the trestle.

[0003] At present, the horizontal force detection and protection device of the embarkation trestle generally sets a buffer cylinder at the bottom of the end of the trestle. After the passive compression of the cylinder, the horizontal force is detected by the change of its air pressure. After a period of use, there will be a certain leakage of the gas in the cylinder. When using it again, the buffer cylinder needs to be filled with gas to the set value to accurately detect the horizontal force.

[0004] In view of the above situation, it is urgent to design a new horizontal force detection and protection device for the embarkation trestle, which is more convenient for force detection and does not need to be calibrated before each use. Summary of the Invention

[0005] Aiming at the defects existing in the prior art, the purpose of the present invention is to provide a horizontal force detection and protection device for the end of an embarkation trestle. By directly detecting the horizontal force at the end of the embarkation trestle, the force detection is made more convenient and simple, and it is not necessary to calibrate the initial set value before each use.

[0006] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0007] The present invention provides a horizontal force detection and protection device for the end of an embarkation trestle, including a fixed guiding mechanism, a head telescopic mechanism and a pressure detection mechanism;

[0008] The fixed guiding mechanism is arranged at the end of the trestle walkway platform. The fixed guiding mechanism includes a fixed frame connected to the trestle walkway platform and anti-collision rubber strips arranged on both sides of the fixed frame; a guiding sleeve and a buffer sleeve are arranged on the fixed frame;

[0009] The head telescopic mechanism includes a telescopic frame slidably connected to the fixed guiding mechanism, anti-collision rubber strips arranged on the outer side of the telescopic frame, a spring buffer mechanism arranged on the telescopic frame, and a balance beam connected to the spring buffer mechanism; a guiding round tube matching the guiding sleeve is arranged on the telescopic frame, and a stop component is arranged on the side of the guiding round tube close to the trestle walkway platform; the spring buffer mechanism passes through the buffer sleeve and is connected to the telescopic frame; the balance beam is arranged on the side close to the trestle walkway platform;

[0010] The pressure detection mechanism is arranged on the trestle walkway platform. The pressure detection mechanism is used to detect the horizontal force at the end of the boarding trestle, and its position on the trestle walkway platform corresponds to the position of the balance beam.

[0011] Preferably, the fixed guiding mechanism is fixedly connected to the trestle walkway platform through pin shafts arranged at both ends of the fixed frame.

[0012] Preferably, the fixed frame is provided with two guiding sleeves, and the two guiding sleeves are respectively arranged on both sides of the buffer sleeve.

[0013] Preferably, the stop assembly includes a baffle and an adjusting bolt, and the baffle is connected to the guiding circular tube through the adjusting bolt.

[0014] Preferably, the spring buffer mechanism includes a spring connecting rod, a spring, a sliding bearing, and a spring base; the spring connecting rod passes through the buffer sleeve and is slidably connected to the spring base through the spring and the sliding bearing, the spring is sleeved on the spring connecting rod; the sliding bearing is arranged inside the spring base; the spring base is fixedly connected to the telescopic frame.

[0015] Preferably, the fixed frame is provided with stoppers that contact the two side plates on the balance beam.

[0016] Preferably, the pressure detection mechanism includes two pressure sensors corresponding to the positions of the two side plates of the balance beam, and the bottoms of the two pressure sensors contact the two side plates on the balance beam.

[0017] Preferably, it further includes a PLC controller connected to the pressure detection mechanism, and the PLC controller is connected to a moving mechanism that drives the boarding trestle to move horizontally.

[0018] The horizontal force detection and protection device at the end of the boarding trestle of the present invention has the following beneficial effects:

[0019] 1. The present invention detects the horizontal force through a pressure sensor, making the force detection more convenient and simple, and there is no need to check the initial setting value before each use;

[0020] 2. The present invention buffers the impact force when the end of the trestle contacts the boarding platform by setting a spring buffer mechanism;

[0021] 3. The present invention realizes the function of one standby and one use for horizontal force detection through the pressure sensors arranged at both ends of the balance beam;

[0022] 4. The present invention protects the horizontal force borne by the end of the trestle from exceeding the critical value through the adjustment of the telescopic length of the spring buffer mechanism;

[0023] 5. The head telescopic mechanism of the present invention is light in weight and simple in structure, playing the role of accurately transmitting the horizontal force;

[0024] 6. The horizontal force detection and protection device at the end of the boarding trestle of the present invention is simple in structure, low in cost and convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, objects and advantages of the present invention will become more apparent:

[0026] Figure 1 is a schematic structural diagram of the horizontal force detection and protection device at the end of the boarding trestle of the present invention;

[0027] Figure 2 is a schematic structural diagram of the fixed guiding mechanism of the present invention;

[0028] Figure 3 is a schematic structural diagram of the head telescopic mechanism of the present invention;

[0029] Figure 4 is a schematic structural diagram of the spring buffer mechanism of the present invention;

[0030] Figure 5 is a schematic structural diagram of the extended state and retracted state of the head telescopic mechanism of the horizontal force detection and protection device at the end of the boarding trestle of the present invention, (a) is a schematic diagram of the extended state of the head telescopic mechanism, and (b) is a schematic diagram of the retracted state of the head telescopic mechanism;

[0031] In the figure, 10, fixed guiding mechanism; 11, fixed frame; 12, anti-collision rubber strip; 13, guiding sleeve; 14, buffer sleeve; 15, pin shaft; 20, head telescopic mechanism; 21, telescopic frame; 22, anti-collision rubber strip; 23, guiding round tube; 24, spring buffer mechanism; 241, spring connecting rod; 242, spring; 243, spring base; 244, sliding bearing; 25, balance beam; 26, baffle; 27, adjusting bolt; 28, stop block; 30, pressure sensor; 40, trestle walkway platform. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form.

[0033] Combined with Figure 1 As shown, the horizontal force detection and protection device at the end of the boarding trestle provided by the present invention includes a fixed guiding mechanism 10, a head telescopic mechanism 20 and a pressure detection mechanism; the head telescopic mechanism 20 can telescopically slide within the fixed guiding mechanism 10.

[0034] Combined withFigure 1 , Figure 2 As shown in Figure 2 , the fixed guiding mechanism 10 is provided at the end of the trestle walkway platform 40. The fixed guiding mechanism 10 includes a fixed frame 11 connected to the trestle walkway platform 40 and anti-collision rubber strips 12 provided on both sides of the fixed frame 11; a guiding sleeve 13 and a buffer sleeve 14 are provided on the fixed frame 11. Among them, the fixed guiding mechanism 10 is fixedly connected to the trestle walkway platform 40 through pin shafts 15 provided at both ends of the fixed frame 11. Combining Figure 2 As shown in Figure 2 , two guiding sleeves 13 are provided on the fixed frame 11, and the two guiding sleeves 13 are respectively arranged on both sides of the buffer sleeve 14.

[0035] Combining Figure 1 , Figure 3 As shown in Figure 1 and Figure 3 , the head telescoping mechanism 20 includes a telescoping frame 21 slidably connected to the fixed guiding mechanism 10, anti-collision rubber strips 22 provided on the outer side of the telescoping frame 21, a spring buffer mechanism 24 provided on the telescoping frame 21, and a balance beam 25 connected to the spring buffer mechanism 24; a guiding round tube 23 matching the guiding sleeve 13 is provided on the telescoping frame 21. A stop assembly is provided on one side of the guiding round tube 23 close to the trestle walkway platform 40. After the guiding round tube 23 passes through the guiding sleeve 13, the stop assembly provided thereon is used to prevent the head telescoping mechanism 20 from sliding out of the fixed guiding mechanism 10. The spring buffer mechanism 24 passes through the buffer sleeve 14 and is connected to the telescoping frame 21; the balance beam 25 is arranged on one side close to the trestle walkway platform 40.

[0036] Combining Figure 1 , Figure 4 As shown in Figure 1 and Figure 4 , the pressure detection mechanism is provided on the trestle walkway platform 40. The pressure detection mechanism is used to detect the horizontal force at the end of the boarding trestle, and its position on the trestle walkway platform 40 corresponds to the position of the balance beam 25.

[0037] Combining Figure 1 , Figure 3 As shown in Figure 1 and Figure 3 , the stop assembly includes a baffle 26 and an adjusting bolt 27. The baffle 26 is connected to the guiding round tube 23 through the adjusting bolt 27 to prevent the head telescoping mechanism 20 from sliding out. During installation, the adjusting bolt 27 on the baffle 26 can be adjusted to make the inner wall gap of the guiding round tube 23 uniform after passing through the guiding sleeve 13, so that it can expand and contract freely.

[0038] Combining Figure 1 , Figure 4 As shown in Figure 1 and Figure 4 , the spring buffer mechanism 24 includes a spring link 241, a spring 242, a spring base 243, and a sliding bearing 244; the spring link 241 passes through the buffer sleeve 14 and is slidably connected to the spring base 243 through the spring 242 and the sliding bearing 244; among them, the spring 242 is sleeved on the spring link 241, and the sliding bearing 244 is arranged in the spring base 243; the spring base 243 is fixedly connected to the telescoping frame 21.

[0039] Combined with Figure 1 、 Figure 4 As shown, to prevent the balance beam 25 from rotating together with the spring buffer mechanism 24, stoppers 28 that contact the two side plates on the balance beam 25 are provided on the fixed frame 11, and the rotation of the balance beam 25 is blocked by the two stoppers 28.

[0040] Combined with Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the pressure detection mechanism includes two pressure sensors 30 corresponding to the positions of the two side plates of the balance beam 25; when installing the two pressure sensors 30, ensure that the bottom contacts the side plates of the balance beam 25 reliably, connect the spring link 241 and the balance beam 25 with bolts, so that the balance beam 25 and the head telescopic mechanism are an integral body, and ensure that the horizontal force received at the end of the trestle is reliably transmitted to the pressure sensors 30.

[0041] The pressure detection mechanism on the horizontal force detection and protection device at the end of the boarding trestle of the present invention is connected to the control module that controls the movement of the trestle walkway platform 40, and this control module receives the horizontal forces detected by the two pressure sensors 30 of the pressure detection mechanism. When the horizontal force detected by the pressure sensor 30 approaches the target value, to protect the end of the trestle, the control module controls the moving mechanism of the trestle walkway platform 40 to drive the entire horizontal force detection and protection device at the end of the boarding trestle to retract. At this time, the spring buffer mechanism 24 presents a rebound state, and the compression spring 242 releases a part of the horizontal force while rebounding. When the horizontal force detected by the pressure sensor 30 is controlled within a reasonable range of the target value, the retraction action is stopped.

[0042] Combined with Figure 5 As shown, when the horizontal force detection and protection device at the end of the boarding trestle of the present invention is in use, the specific process is as follows:

[0043] Combined with Figure 5 As shown in (a) of , when there is no horizontal force at the end of the trestle, the pressure detected by the pressure sensor 30 is zero or a very small pressure, and this pressure is set as the initial value. At this time, the head telescopic mechanism 20 is in the extended state. Combined with Figure 5 As shown in (b) of , when there is a horizontal pressure at the end of the trestle, the spring buffer mechanism 24 in the head telescopic mechanism 20 is compressed, and then the entire head telescopic structure presents a retracted state. At this time, the horizontal force acts on the anti-collision rubber strip of the head telescopic mechanism 20, and is transmitted to the spring buffer mechanism 24, and then transmitted to the balance beam 25 through the spring buffer mechanism 24, and acts on the two pressure sensors 30 of the pressure detection mechanism through the balance beam 25, so as to realize the detection of the horizontal force.

[0044] When the pressure sensor 30 on the pressure detection mechanism detects that the horizontal force borne by the end of the trestle approaches the target value, to protect the end of the trestle, the trestle walkway platform 40 is driven to drive the overall retraction of the boarding trestle end horizontal force detection and protection device. At this time, to ensure that the end of the trestle remains in contact with the boarding platform for operation, the spring buffer mechanism 24 on the head telescopic mechanism 20 is in a state of springback. The compressed spring 242 releases part of the horizontal force borne by the spring buffer mechanism 24 while springing back. When the horizontal force detected by the pressure sensor 30 on the pressure detection mechanism is controlled within a reasonable range of the target value, the retraction action is stopped.

[0045] In summary, the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A horizontal force detection and protection device at the end of an embarkation trestle, characterized in that, It includes a fixed guiding mechanism, a head telescoping mechanism and a pressure detection mechanism; The fixed guiding mechanism is arranged at the end of the trestle walkway platform. The fixed guiding mechanism includes a fixed frame connected to the trestle walkway platform and anti-collision rubber strips arranged on both sides of the fixed frame; a guiding sleeve and a buffer sleeve are arranged on the fixed frame; The head telescoping mechanism includes a telescoping frame slidably connected to the fixed guiding mechanism, anti-collision rubber strips arranged on the outer side of the telescoping frame, a spring buffer mechanism arranged on the telescoping frame and a balance beam connected to the spring buffer mechanism; a guiding round tube matching with the guiding sleeve is arranged on the telescoping frame, and a stop assembly is arranged on one side of the guiding round tube close to the trestle walkway platform; the spring buffer mechanism passes through the buffer sleeve and is connected to the telescoping frame; the balance beam is arranged on one side close to the trestle walkway platform; The pressure detection mechanism is arranged on the trestle walkway platform. The pressure detection mechanism is used to detect the horizontal force at the end of the boarding trestle, and its position on the trestle walkway platform corresponds to the position of the balance beam. The pressure detection mechanism includes two pressure sensors corresponding to the positions of the two side plates of the balance beam. The bottoms of the two pressure sensors are in contact with the two side plates on the balance beam. The pressure detection mechanism is connected to a control module for controlling the movement of the trestle walkway platform. The control module receives the horizontal forces detected by the two pressure sensors of the pressure detection mechanism. When the horizontal force detected by the pressure sensor approaches the target value, the control module controls the moving mechanism of the trestle walkway platform to drive the overall retraction of the horizontal force detection and protection device at the end of the boarding trestle. At this time, the spring buffer mechanism is in a rebound state, and the compressed spring releases a part of the horizontal force while rebounding. When the horizontal force detected by the pressure sensor is controlled within a reasonable range of the target value, the retraction action is stopped.

2. The boarding trestle end horizontal force detection and protection device according to claim 1, wherein The fixed guiding mechanism is fixedly connected to the trestle walkway platform through pin shafts arranged at both ends of the fixed frame.

3. The boarding trestle end horizontal force detection and protection device according to claim 1, characterized in that, Two guiding sleeves are arranged on the fixed frame, and the two guiding sleeves are respectively arranged on both sides of the buffer sleeve.

4. The boarding trestle end horizontal force detection and protection device according to claim 1, characterized in that The stop assembly includes a baffle and an adjustment bolt. The baffle is connected to the guiding round tube through the adjustment bolt.

5. The boarding bridge end horizontal force detection and protection device according to claim 1, characterized in that, The spring buffer mechanism includes a spring connecting rod, a spring, a sliding bearing and a spring base; the spring connecting rod passes through the buffer sleeve and is slidably connected to the spring base through the spring and the sliding bearing. The spring is sleeved on the spring connecting rod; the sliding bearing is arranged in the spring base; the spring base is fixedly connected to the telescoping frame.

6. The boarding bridge end horizontal force detection and protection device according to claim 1, characterized in that, Blocks in contact with the two side plates on the balance beam are arranged on the fixed frame.

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