CN104236388B - Fork machinery position-limit mechanism - Google Patents

Abstract

The mechanical limit mechanism of the swing rod of the invention relates to a mechanical limit device for limiting the position of the swing rod of the launching platform. The present invention comprises a fan-shaped limiting plate, a latch seat, a square pin, and a pull rod mechanism. The angle formed by the two working surfaces of the limiting plate is smaller than the swing angle of the swing rod. The edge of the bit plate can be inserted into the groove of the pin seat, and the pin seat is provided with a square pin hole and a tie rod pin hole, and the lower end of the square pin can be inserted into the square pin hole. , the outer wall of the baffle is attached to the inner wall of the guide cylinder, the inner and lower part of the guide cylinder is provided with a stepped through hole, the upper part of the tie rod pin is connected with the handle, the lower part of the tie rod pin is provided with a long round baffle, and the tie rod pin passes through the baffle, the stepped through hole and protrudes The lower end surface of the guide cylinder, its lower end can be inserted into the pull rod pin hole, the spring is sleeved on the outer surface of the middle part of the pull rod pin, the bracket is fixedly connected on the pin seat, and the outer wall of the guide cylinder is fixedly connected with the inner wall of the round hole provided on the bracket.

Description

Swing rod mechanical limit mechanism

technical field

The invention relates to a limit mechanism, in particular to a mechanical limit mechanism for limiting the position of a launch platform swing bar.

Background technique

The launch platform for large-carry activities is mainly composed of mechanical structure, pinning and releasing device, electric control system, hydraulic system, travel drive system, air-conditioning system, etc. It is a large-scale device integrating machinery, electricity and hydraulics with complex structure.

Among them, the mechanical structure of the launch platform mainly includes the platform body, umbilical tower and swing rod. The swing rod is used to carry pipelines such as filling and gas supply and related cables, and is also used to swing and avoid the pipeline connected to the rocket body before launch. . The swing rod is a truss structure, fixed on both sides of the umbilical tower with the rotary shaft, and the swing rod rotates around the rotary shaft. Before the launch of the rocket, the pendulum closes close to the rocket body to carry pipelines such as filling and gas supply and related cables; during the launch phase, the pendulum is driven to swing to a corresponding angle to allow the rocket take-off channel to ensure the rocket takes off smoothly.

In order to ensure that the operation of the swing rod will not be affected by the failure of the electric control and hydraulic equipment, it is necessary to design a mechanical device at the root of the swing rod to maintain the state of the swing rod to prevent the swing rod from swinging incorrectly.

Contents of the invention

The technical problem to be solved by the present invention is to provide a mechanical limit mechanism of the swing rod which can realize the lock and limit of the swing rod and avoid the wrong swing of the swing rod.

The swing rod mechanical limit mechanism of the present invention comprises a limit plate, a latch seat, a square pin, and a pull rod mechanism, the limit plate is fan-shaped, the two sides of the limit plate are working surfaces, and the angle formed by the two working surfaces is less than The opening angle of the swing rod, the position limiting plate is provided with a first through hole near the center, the pin seat includes two horizontal plates arranged in parallel and at intervals, and a vertical plate vertically connected to one end of the two horizontal plates , a groove is formed between the two horizontal plates and the vertical plate, the edge of the limiting plate can be inserted into the groove of the bolt seat, the upper horizontal plate is provided with a square pin hole and a tie rod pin hole, the square pin hole Both the pull rod pin hole and the pull rod pin hole are through holes, and the lower end of the square pin can be inserted into the square pin hole. The pull rod mechanism includes a handle, a pull rod pin, a spring, a guide cylinder, and a rectangular bracket. The guide cylinder is hollow, and the upper part of the guide cylinder is set There is a baffle, the outer wall of the baffle fits the inner wall of the guide cylinder, the inner lower part of the guide cylinder is provided with a stepped through hole, the upper part of the tie rod pin is connected with the handle, and the lower part of the tie rod pin is provided with an oblong baffle, and the oblong baffle The shape of the plate is the same as that of the lower end hole of the step through hole. The tie rod pin passes through the baffle plate, the step through hole and extends out of the lower end surface of the guide cylinder. The lower end of the tie rod pin can be inserted into the tie rod pin hole. The outer surface of the middle part, the upper end of the spring is pressed against the lower end surface of the baffle, the lower end of the spring is pressed against the upper end surface of the oblong baffle, the lower end of the bracket is fixedly connected to the upper horizontal plate, and the upper part of the bracket is provided with a round hole. The circular hole is coaxial with the tie rod pin hole, and the outer wall of the guide cylinder is fixedly connected with the inner wall of the circular hole.

The swing rod mechanical limit mechanism of the present invention, wherein the upper end of the guide cylinder is provided with an observation plate, the observation plate is attached to the inner wall of the guide cylinder, and at least one observation hole is provided on the edge of the observation plate.

In the swing rod mechanical limit mechanism of the present invention, a plurality of bolt holes are arranged on the vertical plate.

The mechanical limit mechanism of the swing rod of the present invention is different from the prior art in that the mechanical limit mechanism of the swing rod of the present invention includes a limit plate, a latch seat, a square pin, and a pull rod mechanism. A through hole, the through hole makes the limit plate fixedly connected with the main shaft of the swing rod, when the swing rod swings, the main shaft of the swing rod rotates, and the limit plate slides in the groove along with the rotation of the main shaft of the swing rod. During the transfer process, manually insert the square pin into the square pin hole set on the pin seat, and clamp one side of the limit plate, which is used to limit the position of the swing rod during the transfer process; the tie rod pin in the tie rod mechanism corresponds to the pin seat The tie rod pin hole on the top can realize the limit during the launch and take-off process. During the transfer process, the tie rod pin retracts into the guide cylinder. At this time, the spring is in a compressed state, and it is transferred to the launch site. Manually pull out the square pin and remove the tie rod pin from the guide cylinder through the tie rod pin hole, so that the lower end surface of the tie rod pin is in good contact with the upper end surface of the limit plate. At this time, the spring is also in a compressed state. The angle formed by the two working surfaces of the position plate is smaller than the swing angle of the swing rod. During the firing process, when the swing angle of the swing rod is greater than the angle formed by the two work surfaces of the limit plate, the pull rod pin is fully inserted under the action of spring force and gravity In the pin seat, the other side of the limit plate is clamped to complete the limit of the pendulum during the launch process and limit the swing of the pendulum. When the transition is completed after the launch, the lock and limit of the pendulum can also be realized to avoid A misplaced situation occurred.

The upper end of the guide cylinder in the mechanical limit mechanism of the swing rod of the present invention is provided with an observation plate, the observation plate is attached to the inner wall of the guide cylinder, and at least one observation hole is arranged on the edge of the observation plate, which is convenient for observing the working conditions of the device. Determine whether the lower end of the tie rod pin has passed through the tie rod pin hole and is in good contact with the upper plane of the limit plate. There are multiple bolt holes on the vertical plate to facilitate the fixed connection between the vertical plate and the launch platform umbilical tower, and the connection is more reliable.

The swing rod mechanical limit mechanism of the present invention will be further described below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the swing rod mechanical limit mechanism of the present invention;

Fig. 2 is a sectional view along A-A in Fig. 1;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is the schematic structural view of the pull rod mechanism in the swing rod mechanical limit mechanism of the present invention;

Fig. 5 is the bottom view of Fig. 4;

Fig. 6 is the schematic diagram of step hole in Fig. 5;

Fig. 7 is the right view of Fig. 6;

Fig. 8 is a structural schematic diagram of the plug seat;

Figure 9 is a top view of Figure 8;

Fig. 10 is the left view of Fig. 8;

Fig. 11 is the structural representation of square pin in the present invention;

Fig. 12 is a left side view of Fig. 11 .

detailed description

Shown in conjunction with Fig. 1, 2, 3, the pendulum mechanical limit mechanism of the present invention comprises limit plate 1, latch seat 2, square pin 3, pull rod mechanism 4, and limit plate 1 is fan-shaped, and the two sides of limit plate 1 12 is the working surface, the angle formed by the two working surfaces is smaller than the swing angle of the swing rod, and the limit plate 1 is provided with a first through hole 11 near the center, which is used for fixed connection with the swing rod main shaft 5'.

Shown in Figures 8 to 12 again, the plug socket 2 includes two horizontal plates 21 parallel to and spaced apart from each other, and a vertical plate 22 connected vertically to one end of the two horizontal plates 21. Groove 23, the edge of limiting plate 1 can be inserted in the groove 23 of latch seat 2, and the horizontal plate 21 on the upper side is provided with square pin hole 211 and pull rod pin hole 212, and square pin hole 211 and pull rod pin hole 212 are both It is a through hole, and the lower end of the square pin 3 can be inserted in the square pin hole 211,

Shown in conjunction with Fig. 4 to 7, pull rod mechanism 4 comprises handle 41, pull rod pin 42, spring 43, guide cylinder 44, rectangular support 45, and guide cylinder 44 is hollow, and guide cylinder 44 inner upper part is provided with baffle plate 441, and the baffle plate 441 The outer wall is attached to the inner wall of the guide cylinder 44, the lower part of the guide cylinder 44 is provided with a step through hole 442, the upper part of the tie rod pin 42 is connected with the handle 41, and the lower part of the tie rod pin 42 is provided with an oblong baffle 421, the shape of the oblong baffle 421 is The shape of the lower end hole of the step through hole 442 is the same, the tie rod pin 42 passes through the baffle plate 441, the step through hole 442 and extends out of the lower end surface of the guide cylinder 44, the lower end of the tie rod pin 42 can be inserted into the tie rod pin hole 212, and the spring 43 is set On the outer surface of the pull rod pin 42 middle part, the upper end of the spring 43 is pushed against the lower end surface of the baffle plate 441, the lower end of the spring 43 is pushed against the upper end surface of the oblong baffle plate 421, and the lower end of the bracket 45 is fixedly connected to the upper horizontal plate 21. The upper part of the bracket 45 A circular hole is provided, and the circular hole is coaxial with the pull rod pin hole 212. The outer wall of the guide cylinder 44 is fixedly connected with the inner wall of the circular hole, that is, the guide cylinder is arranged in the circular hole, and the upper end of the guide cylinder 44 is provided with an observation plate 46, and the observation plate 46 Adhering to the inner wall of the guide cylinder 44 , at least one observation hole 461 is provided on the edge of the observation plate 46 . The vertical plate 22 is provided with a plurality of bolt holes 221 .

During use, the vertical plate 22 of the bolt seat is bolted to the launch platform umbilical tower through the bolt hole 221, and the limiting plate 1 is fixedly connected to the swing rod main shaft 5', which is fixed by welding in the present invention.

The working process of the present invention when the swing bar is opened is as follows: before the swing bar is opened, confirm that the square pin 3 has been pulled out and withdrawn, pull up the handle 41 of the pull bar mechanism 4 to rotate it by 90°, release the handle 41, and pull the bar The pin 42 bounces back under the action of the spring. Observe from the observation hole 461 to confirm that the lower end of the pull rod pin 42 passes through the pull rod pin hole 212 and is in good contact with the upper end surface of the limit plate 1, and the swing rod starts to move. During the action, the lower end of the pull rod pin 42 The head fits and slides with the upper end surface of the limiting plate 1 all the time, because the design angle of the limiting plate, that is, the angle between the two working surfaces of the limiting plate is smaller than the swing angle of the swing rod, the design angle of the limiting plate in this embodiment is 90° °, so when the swing angle is greater than 90°, the pull rod pin 42 is fully inserted into the pull rod pin hole 212 under the action of spring force and gravity, and blocks one side 12 of the limiting plate 1 to limit the swing of the swing rod.

The working process of the present invention when the swing rod swings back is as follows: before the swing rod swings back, pull up the tie rod pin 42 and rotate it 90°, loosen and rotate to confirm that the pull rod pin 42 and the oblong baffle plate 421 have been stuck in the guide cylinder 44. In the step through hole 442, to ensure that the tie rod pin 42 will not pop out due to the vibration of the swing rod. After the swing bar swings back, the square pin 3 is manually inserted into the square pin hole 211, thereby blocking the other side 12 of the limiting plate 1, and restricting the swing bar from swinging.

The above-mentioned embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. Variations and improvements should fall within the scope of protection defined by the claims of the present invention.

Claims (3)

1. A mechanical limit mechanism for a swing rod, characterized in that: it comprises a limit plate (1), a latch seat (2), a square pin (3), a pull rod mechanism (4), and the limit plate (1) is fan-shaped, the two sides of the limiting plate (1) are working surfaces, the angle formed by the two working surfaces is smaller than the swing angle of the swing rod, and the limiting plate (1) is provided with a first through hole ( 11), described latch seat (2) comprises two horizontal plates (21) that are arranged in parallel and at intervals, a vertical plate (22) that is vertically connected to one end of the two horizontal plates (21), two horizontal plates (21) and A groove (23) is formed between the vertical plates (22), the edge of the limiting plate (1) can be inserted into the groove (23) of the latch seat (2), and the upper horizontal plate (21) is provided with Square pin hole (211) and pull rod pin hole (212), described square pin hole (211) and pull rod pin hole (212) are all through holes, described square pin (3) lower end can insert square pin hole (211) Inside, the rod mechanism (4) includes a handle (41), a rod pin (42), a spring (43), a guide cylinder (44), a rectangular bracket (45), the guide cylinder (44) is hollow, and the guide cylinder ( 44) A baffle (441) is arranged on the inner upper part, and the outer wall of the baffle (441) is attached to the inner wall of the guide cylinder (44). The top of (42) is connected with handle (41), and the bottom of described tie rod pin (42) is provided with oblong baffle plate (421), and the shape of oblong baffle plate (421) and the shape of the lower end hole of step through hole (442) Same, tie rod pin (42) passes through baffle plate (441), step through hole (442) and stretches out the lower end surface of guide cylinder (44), the lower end of tie rod pin (42) can be inserted into tie rod pin hole (212), so The spring (43) is sleeved on the outer surface of the middle part of the pull rod pin (42), the upper end of the spring (43) is pressed against the lower end surface of the baffle (441), and the lower end of the spring (43) is pressed against the upper end surface of the oblong baffle (421). The lower end of the bracket (45) is fixedly connected to the upper horizontal plate (21), the upper part of the bracket (45) is provided with a round hole, the round hole is coaxial with the tie rod pin (212), and the guide cylinder (44 ) is fixedly connected to the inner wall of the circular hole. 2. The swing rod mechanical limit mechanism according to claim 1, characterized in that: the upper end of the guide cylinder (44) is provided with an observation plate (46), and the observation plate (46) and the inner wall of the guide cylinder (44) Correspondingly, at least one observation hole (461) is provided on the edge of the observation plate (46). 3. The swing rod mechanical limit mechanism according to claim 2, characterized in that: the vertical plate (22) is provided with a plurality of bolt holes (221).