CN207700033U - A kind of position compensation extension type is gone on board trestle - Google Patents

Abstract

The utility model discloses a position compensation retractable boarding trestle, which comprises a base, a slewing platform, a telescopic trestle and a landing device; the telescopic trestle includes a main arm and a telescopic arm, the main arm is an aluminum alloy frame, and the telescopic arm is an aluminum alloy Frame; a steel guide rail is connected to the main arm through an insulating fixing device. The insulating fixing device includes a lower pressing plate, an upper pressing plate, a screw assembly and a rubber pad; a rubber pad is provided on the upper surface of the lower pressing plate, and a rubber pad is provided on the lower surface of the upper pressing plate. Rubber pads clamp the main arm between the two rubber pads, the screw assembly passes through the upper platen, the lower platen and the rubber pad, there is a gap between the screw assembly and the main arm; steel guide rails are installed on the lower platen and/or the upper platen; landing The device comprises a support on the telescopic arm during installation, a ball head installed on the support and a supporting plate movably linked with the ball head. Utilizing the structure of the utility model, the aluminum alloy anode corrosion can be avoided, and the compensation design is simplified.

Description

A retractable boarding trestle with position compensation

technical field

The utility model relates to a position compensation telescopic boarding trestle.

Background technique

Walking bridges or trestle bridges are mainly used to transport people or goods. On land, the construction of walking bridges is relatively simple, but it is relatively difficult to build the walking bridges used to transport people and materials between two ships at sea. Because, between ship and ship, move mutually, therefore, walk bridge is generally built on a ship, if need use, walk bridge is set between two ships by the mode of overlapping. And in lapping process, to realize better lapping, just need to consider the relative position between step bridge and another ship, otherwise can cause step bridge and ship to collide because of the floating of ship; Need to consider the relative position between two boats equally, according to the relative position of two boats, the step bridge is in the state of passive compensation, like this, just can guarantee normal use; In addition, in case of emergency, step bridge and another ship To be able to achieve emergency escape to ensure safety performance.

In the patent document of Chinese patent application number 201510045917.8, a step bridge device is disclosed, which includes a base and a rotary platform installed above the base, and the rotary platform is connected to the base through a rotary mechanism, so A driver's cab is arranged on the slewing platform, and the slewing platform is connected with a step bridge, safety guardrails are provided on both sides of the step bridge, and a docking device is provided at the suspended end of the step bridge. Compared with the prior art, the present invention has reasonable structural layout and stable operation, and can realize the transportation of personnel between ships and ocean platforms under complex and harsh environments. Although the above-mentioned walking bridge device can realize personnel and material transportation between ships, after the bridge walking device and the bridge walking device are lapped, the bridge device can not carry out corresponding position changes according to the position changes between the ships, which is easy There are problems such as accidents, and in an emergency, Ayuhashi cannot perform emergency escape.

For existing footbridges or trestles, the channel is usually a cantilever structure during the lapping process. If the weight of the channel is too heavy, it will increase the burden on the power system. If the weight of the channel is too light, it may affect the strength of the channel. In addition, after the channel is overlapped, in order to better realize the follow-up compensation, the existing structure is usually more complicated. If it is a simple structure, the compensation is not accurate.

Contents of the invention

The purpose of this utility model is to provide a position compensation retractable boarding trestle, using the structure of this utility model, can avoid aluminum alloy anode corrosion, due to the function of the ball head, can give a certain swing buffer space, so only need to consider Rotation, telescopic and amplitude compensation are all that are needed, and there is no need to consider other swing angles except the amplitude angle, which simplifies the compensation design.

In order to achieve the above purpose, a position compensation telescopic boarding trestle includes a base, a slewing platform, a telescopic trestle and a landing device; the slewing platform is installed on the base; the telescopic trestle includes a main arm and a telescopic arm, and one end of the main arm Pivoted on the slewing platform, the telescopic arm is slidingly set on the main arm; the main arm is an aluminum alloy frame, and the telescopic arm is an aluminum alloy frame; a steel guide rail is connected to the main arm through an insulating fixing device, and the insulating fixing The device includes a lower platen, an upper platen, a screw assembly and a rubber pad; a rubber pad is provided on the upper surface of the lower platen, a rubber pad is provided on the lower surface of the upper platen, and the main arm is clamped between the two rubber pads, and the screw assembly passes through the upper platen. Pressure plate, lower pressure plate and rubber pad, there is a gap between the screw assembly and the main arm; steel guide rails are installed on the lower pressure plate and/or upper pressure plate; the landing device includes the support on the telescopic arm during installation, the The ball head on the ball head and the support disc that is movably linked with the ball head.

For the main arm and the telescopic arm, due to the cantilever structure, in order to improve the stability of the structure, it is necessary to reduce the weight of the main arm and the telescopic arm as much as possible. Therefore, the aluminum alloy material is selected, but the telescopic arm needs to be inside the main arm. Sliding, but the aluminum alloy guide rail is not good in strength and wear resistance. Therefore, the guide rail adopts a steel structure, but the direct contact between the aluminum alloy and the steel structure is prone to anode corrosion. Therefore, in the utility model, the Set the rubber pad to insulate the aluminum alloy and steel guide rails, avoid anode corrosion, and better protect the aluminum alloy main arm and telescopic arm. Due to the function of the ball head, a certain swing buffer space can be given, so that only the rotation, expansion and luffing compensation need to be considered, and other swing angles other than the luffing angle need not be considered, which simplifies the compensation design.

Further, a base lifting mechanism is installed on the base; the base lifting mechanism includes a fixed sleeve fixed on the deck, a lifting cylinder hinged on the deck and a lifting column, the lifting column is fixed on the base, and the lifting The lower end of the column is plugged into the fixed sleeve, and the upper end of the lifting cylinder is hinged on the base. The rise or fall of the base is controlled by the lifting cylinder; the specific method is: the piston rod of the lifting cylinder moves upward, the lifting cylinder pushes the base, the rotary platform, and the telescopic trestle to move upward together, and the lifting column moves in the fixed sleeve. The movement of the lifting column is guided; if the piston rod of the lifting cylinder moves downward, it will drive the base, slewing platform and telescopic trestle to move downward, so as to achieve the purpose of adjusting the upper and lower positions of the base, slewing platform and telescopic trestle.

Further, a lifting and locking mechanism is provided between the fixed sleeve and the lifting column, and the lifting and locking mechanism includes a locking cylinder installed on the fixing sleeve and a socket provided on the lifting column, and the piston of the locking cylinder The rod is capable of mating with the socket. Start the locking cylinder, the piston rod of the locking cylinder will be inserted into the socket to lock the lifting column, start the locking cylinder in the direction, the piston rod of the locking cylinder will break away from the socket, and unlock the lifting column. In this way, the locking and releasing of the lifting column can be realized. If the lifting base is not needed, the connection between the lifting column and the fixing sleeve can be made more reliable through the locking mechanism.

Further, the base is connected with oil and water hoses that pass through the main arm and are connected to the telescopic arm. In this way, water and oil are conveniently delivered to the free end of the telescopic trestle, and water and oil can also be delivered to the overlapped platform.

Description of drawings

Fig. 1 is a schematic diagram of the first structure of the position compensation retractable boarding trestle.

Fig. 2 is a downward schematic diagram of the first structure of the position compensation retractable boarding trestle.

Fig. 3 is a schematic diagram of the second structure of the position compensation retractable boarding trestle.

Fig. 4 is a downward schematic diagram of the second structure of the position compensation retractable boarding trestle.

FIG. 5 is an enlarged schematic view of direction C in FIG. 3 .

FIG. 6 is an enlarged schematic view of direction A in FIG. 1 .

Fig. 7 is an enlarged view of B in Fig. 6 .

FIG. 8 is a schematic side view of FIG. 7 .

FIG. 9 is an enlarged view of D in FIG. 1 .

Figure 10 is a schematic diagram of the landing device.

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in FIGS. 1 to 6 , the position compensation telescopic boarding trestle includes a base 11 , a slewing platform 12 , a telescopic trestle 13 , a landing device 14 , a rotary hydraulic motor 10 , a telescopic hydraulic cylinder 20 and a luffing cylinder 30 .

As shown in Figure 9, the rotary platform 12 includes a rotatable ring gear 121 mounted on the base 11, a rotary drive gear 122 mounted on the output shaft of the rotary hydraulic motor 10, and a rotary seat fixed on the ring gear 121. 123, the rotary hydraulic motor 10 is installed on the base 11. Two or more rotary hydraulic motors 10 are provided. There is an accommodating cavity 1231 in the slewing seat 123, which can be used to place hydraulic systems such as control systems and hydraulic oil tanks, and can effectively use space and reduce the volume of the position-compensated retractable boarding trestle.

As shown in FIGS. 1 to 4 , a base maintenance platform 15 is installed on the base 11 , which is convenient for maintenance personnel to stand on the base maintenance platform 15 for maintenance. On the base 11, a base climbing ladder 16 is fixed, and the upper end of the base climbing ladder 16 is connected with a passage climbing ladder 17, and the passage climbing ladder 17 leads to the platform of the revolving seat 123. The cab 18 is mounted on the swivel seat 123 .

As shown in FIGS. 1 to 6 , the telescopic trestle 13 includes a main arm 131 and a telescopic arm 132 . The main arm 131 is an aluminum alloy frame, and the telescopic arm 132 is an aluminum alloy frame, so that the entire telescopic trestle is light in weight and consumes little energy during the luffing process. One end of the main arm 131 is hinged on the revolving seat 123, and the main arm 131 is provided with a guardrail 1311, and the guardrail can play a protective role when passing people. In the present utility model, the telescopic arm 132 is slidably arranged on the main arm 131. Since both the main arm 131 and the telescopic arm 132 are made of aluminum alloy, although the weight is light, the strength and wear resistance are relatively low, and in order to To adapt to the sliding of the telescopic arm 132, a steel guide rail 133 is installed in the main arm 132. The steel guide rail 133 has high strength and good wear resistance. If the aluminum alloy is in direct contact with the steel, anode corrosion is likely to occur. Therefore, in the utility model, the aluminum alloy structure and the steel guide rail adopt the structure of an insulating fixture 134: as shown in Figures 7 and 8, the described insulating fixture The device 134 comprises a lower pressing plate 1341, an upper pressing plate 1342, a screw assembly 1343 and a rubber pad 1344; the upper surface of the lower pressing plate 1341 is provided with a rubber pad 1344, the lower surface of the upper pressing plate 1342 is provided with a rubber pad 1344, and between the two rubber pads 1344 clamp one side pipe in the main arm; the screw assembly includes a screw, a nut and a washer, and the screw assembly passes through the upper pressing plate 1341, the lower pressing plate 1342 and the rubber pad 1344 to clamp the middle pipe of the main arm, and the screw assembly and There is a gap between the corresponding square tubes of the main arm, so as to avoid the contact between the screw assembly and the main arm; the steel guide rail is installed on the lower platen and/or the upper platen, and the aluminum alloy and steel guide rails are insulated by setting rubber pads to avoid anode corrosion , to better protect the aluminum alloy main arm and telescopic arm.

As shown in Fig. 5 and Fig. 6, the upper side of the telescopic arm 132 is provided with the first roller group 135 contacting with the steel guide rail 133 of the upper side, and the lower side of the telescopic arm 132 is provided with the steel guide rail of the lower side. The second roller group 136 contacted by 133 is provided with a support 137 on the upper side of the telescopic arm 132, and the third roller group 138 contacting with the steel guide rail 133 on the laterally arranged side is provided on the support 137. As shown in FIG. 1 to FIG. 4 , the first roller set 135 includes a first bracket 1351 installed on the telescopic arm and a first roller 1352 arranged on the first bracket 1351 , and the first roller 1352 is a rubber roller. The second roller group 136 includes a second bracket 1361, a swing arm 1362 and a second roller 1363, the second bracket 1361 is fixed on the telescopic arm 132, the middle part of the swing arm 1362 is hinged on the second bracket 1361, and the swing arm The two ends of 1362 are respectively provided with second rollers 1363, and the second rollers 1363 are rubber rollers. The third roller set includes a third bracket 1381 arranged on both sides of the bracket and a third roller 1382 arranged on the third bracket 1381 . In the free end of main arm 131, be provided with the 4th pulley group 139, the 4th pulley group 139 comprises the 4th support 1391 that is installed on the main arm and the 4th pulley that is located on the 4th support 1391; The fifth pulley block 1310 is respectively arranged on the left and right sides. After the telescopic arm 132 is stretched out, the fourth block pulley 139 can resist the first and second block pulleys to prevent the telescopic arm from slipping out of the main arm; since the first, first, third, fourth, and fifth block pulleys are provided, therefore, The expansion and contraction resistance of the telescopic arm is small, and the operation of the telescopic arm is stable. The fifth pulley in the third and fourth pulleys and the fifth pulley set is a rubber pulley.

The two ends of the main arm 131 are respectively equipped with telescopic arm stroke limit sensors, and when the telescopic arm stroke limit sensor detects that the telescopic arm reaches the limit position, the telescopic arm stops moving.

A telescopic drive device is provided between the main arm 131 and the telescopic arm 132 , and the telescopic drive device includes a telescopic hydraulic motor 20 , a telescopic drive gear 21 , and a telescopic drive rack 22 . The telescopic hydraulic motor 20 is mounted on the main arm 131, the telescopic drive gear 21 is mounted on the output shaft of the telescopic hydraulic motor, the telescopic drive rack 22 is mounted on the telescopic arm 132, and the telescopic drive gear 21 meshes with the telescopic drive rack 22. When the telescopic hydraulic motor 20 is working, the telescopic gear 21 rotates, thereby driving the telescopic driving rack 22 to move linearly, and driving the telescopic arm 132 to extend or retract.

A telescopic support rod 1311 is installed on the main arm 132 for supporting the main arm 132 and can be stretched according to the swing angle of the main arm.

A ladder 1312 is installed at the free end of the telescopic arm 132 .

As shown in Figure 1, Figure 3 and Figure 10, the landing device is installed on the free end of the telescopic arm, and the landing device 14 includes a support 141, a ball head installed on the support 141 and a support that is movably linked with the ball head Disk 142. With this structure, when the telescopic trestle 13 is overlapped to the overlapping point, the support plate 142 is in contact with the overlapped platform, and the support plate 142 is connected to the overlapped platform through the connecting mechanism. When the position of the overlapped platform changes, Due to the function of the ball head, a certain swing buffer space can be given, so that only the rotation, expansion and luffing compensation need to be considered, and other swing angles other than the luffing angle need not be considered, which simplifies the compensation design.

As shown in FIG. 1 and FIG. 3 , one end of the luffing cylinder 30 is hinged on the swivel base 123 , and the other end of the luffing cylinder 30 is hinged on the main arm 131 .

As shown in FIG. 3 and FIG. 4 , another structure of the position compensation retractable boarding trestle is that a base lifting mechanism 19 is installed on the base 11 . The base lifting mechanism 19 includes a fixed sleeve 191 fixed on the deck 100, a lifting cylinder 192 hinged on the deck 100 and a lifting column 193, the lifting column 193 is fixed on the base 11, and the lower end of the lifting column 193 is plugged Into the fixed sleeve 191 , the upper end of the lifting cylinder 192 is hinged on the base 11 . The rise or fall of the base is controlled by the lifting cylinder; the specific method is: the piston rod of the lifting cylinder moves upward, the lifting cylinder pushes the base, the rotary platform, and the telescopic trestle to move upward together, and the lifting column moves in the fixed sleeve. The movement of the lifting column is guided; if the piston rod of the lifting cylinder moves downward, it will drive the base, slewing platform and telescopic trestle to move downward, so as to achieve the purpose of adjusting the upper and lower positions of the base, slewing platform and telescopic trestle.

A lifting and locking mechanism is provided between the fixed sleeve 191 and the lifting column 193. The lifting and locking mechanism includes a locking cylinder 194 installed on the fixing sleeve and a jack 195 arranged on the lifting column. The locking cylinder 194 The piston rod can cooperate with jack 195. Start the locking cylinder, the piston rod of the locking cylinder will be inserted into the socket to lock the lifting column, start the locking cylinder in the direction, the piston rod of the locking cylinder will break away from the socket, and unlock the lifting column. In this way, the locking and releasing of the lifting column can be realized. If the lifting base is not needed, the connection between the lifting column and the fixing sleeve can be made more reliable through the locking mechanism.

An oil delivery and/or water delivery pipe 1000 passing through the main arm 131 and connected to the telescopic arm is connected to the base 11, and the oil delivery and/or water delivery pipe 1000 on the main arm can be a hose or a hard pipe , while the one on the telescopic arm is the hose. In this way, water and oil are conveniently delivered to the free end of the telescopic trestle, and water and oil can also be delivered to the overlapped platform.

Claims (3)

1. A position compensation retractable boarding trestle, comprising a base, a slewing platform, a telescopic trestle and a landing device; the slewing platform is installed on the base; the telescopic trestle includes a main arm and a telescopic arm, and one end of the main arm is pivotally connected to the On the slewing platform, the telescopic arm is slidably set on the main arm; it is characterized in that: The main arm is an aluminum alloy frame, and the telescopic arm is an aluminum alloy frame; a steel guide rail is connected to the main arm through an insulating fixing device, and the insulating fixing device includes a lower pressing plate, an upper pressing plate, a screw assembly and a rubber pad; A rubber pad is provided on the upper surface, and a rubber pad is provided on the lower surface of the upper pressing plate. The main arm is clamped between the two rubber pads. The screw assembly passes through the upper pressing plate, the lower pressing plate and the rubber pad. There is a gap between the screw assembly and the main arm. ;Steel rails are mounted on the lower platen and/or the upper platen; The landing device includes a support on the telescopic arm during installation, a ball head installed on the support and a support plate movably linked with the ball head. 2. The position compensation retractable boarding trestle according to claim 1 is characterized in that: a base lifting mechanism is installed on the base; the base lifting mechanism includes a fixed sleeve fixed on the deck, a hinge For the lifting cylinder and lifting column on the deck, the lifting column is fixed on the base, the lower end of the lifting column is inserted into the fixed sleeve, and the upper end of the lifting cylinder is hinged on the base; A locking mechanism, the lifting and locking mechanism includes a locking oil cylinder installed on the fixed sleeve and a socket arranged on the lifting column, and the piston rod of the locking oil cylinder can cooperate with the socket. 3. The telescopic boarding trestle with position compensation according to claim 1, characterized in that: oil and water hoses passing through the main arm and connected to the telescopic arm are connected to the base.