Turnover rear door mechanical synchronization device
By setting a slide chute and a stop block on the fixed bracket of the flip rear door, and adding step surfaces to the pins to cooperate with the clamp, the problem of the rear door not rotating around the original rotation point when the cylinder shrinks, the smooth flipping and closing of the rear door is achieved, and the failure rate is reduced.
Patent Information
- Application Number
- CN202421431634.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-21
AI Technical Summary
When the cylinder shrinks, the flip rear door may not rotate about the original rotation point, but is pulled backwards as a whole, causing confusion in the movement and may interfere with the upper part of the box when it falls, causing damage.
A mechanical synchronization device for flipped rear doors is designed. By setting a slide chute and a stop block on the fixed bracket and adding a step surface to the pin to cooperate with the clamp, it ensures that the rear door can only rotate at a specific point when flipped and closed, avoiding backward movement until it is approached to the horizontal state.
It effectively ensures smooth movement of the rear door when flipping and closing, avoids interference with the box, reduces the failure rate, and improves the reliability of the equipment.
Smart Images
Figure CN222701780U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of fixed boxes, and particularly relates to a mechanical synchronization device for a flip rear door. Background Art
[0002] The fixed box and the fixed compression equipment are used together. A flip rear door is installed at the rear of the fixed box. The pin of the flip rear door passes through the door body and then through the slide groove on the fixed box. The flip rear door is hinged with the oil cylinder. The flip rear door moves under the drive of the oil cylinder, first moving horizontally and then flipping upward; but the problem is that after the rear door flips into place, when the oil cylinder contracts, the rear door may not rotate around the original rotation point, but be pulled backward as a whole, and the action is chaotic at this time, and the flip rear door may interfere with the upper part of the box when it descends. Utility Model Content
[0003] The utility model aims to provide a mechanical synchronization device for a flip rear door, which can ensure that when the flip rear door of a box body flips back, it first rotates around a rotation point, and when the rear door turns to a horizontal position, it can move backward horizontally, thereby ensuring that the rear door will not interfere with the box body and be damaged, and reducing the failure rate.
[0004] The purpose of the utility model is achieved as follows: a mechanical synchronization device for a flip rear door comprises a fixed box, the rear part of the fixed box is connected to the flip rear door, two symmetrical fixed brackets are arranged on the left and right sides of the rear part of the fixed box, a slide groove is opened on the fixed bracket along the length direction, and two left-right symmetrical pin shafts are arranged on the flip rear door, the axis of the pin shaft is parallel to the width direction of the fixed box, the two pin shafts are coaxially arranged, the inner end of the pin shaft vertically passes through the slide groove of the corresponding fixed bracket and is sleeved with a card plate, a stop block is arranged on the inner side of the fixed bracket below the slide groove, a horizontal passing surface is arranged on the lower side of the card plate, and the passing surface is arranged corresponding to the stop block; a flip driving mechanism is arranged corresponding to the flip rear door.
[0005] The pin connecting the flip rear door and the fixed box of the utility model has a step surface added, and the pin cooperates with the card plate, and the card plate also rotates when the pin rotates; a stopper is welded at the lower part of the slide groove of the fixed bracket, and the card plate has a shape that cooperates with the step surface of the pin to ensure that the card plate is fixed on the pin, and the bottom of the card plate is a plane, which can pass through the stopper position when moving horizontally, and the nut locks the pin and the card plate. During operation, the oil cylinder drives the flip rear door to move backward normally, and when the pin of the flip rear door moves to the rear end of the slide groove, the oil cylinder drives the flip rear door to rotate upward to open the flip rear door; when the oil cylinder piston rod contracts and drives the rear door to close, the flip rear door cannot move backward because the arc surface of the card plate contacts the stopper, and can only rotate at this point. The flip rear door can only move forward when it rotates to a nearly horizontal state. Compared with the prior art, the beneficial effect of the utility model is that it can ensure that when the flip rear door of the box is flipped back, it first rotates around the rotation point, and when the rear door is turned to a horizontal position, it can move horizontally backward, ensuring that the rear door will not interfere with the box and be damaged, thereby reducing the failure rate.
[0006] As a further improvement of the utility model, a mounting portion is vertically arranged on the fixed bracket, a slide groove is opened on the mounting portion, and a stop block is arranged on the mounting portion.
[0007] As a further improvement of the utility model, the flip rear door comprises a rear door body, and a swing arm body extending forward is provided on both the left and right sides of the rear door body, and a mounting hole for allowing a pin shaft to pass through is provided at the front end of the swing arm body, and a driving part inclined downward is also provided at the front end of the swing arm body. The oil cylinder is connected to the driving part to drive the swing arm body to swing; the pin shaft is connected to the swing arm body through the mounting hole.
[0008] As a further improvement of the utility model, the pin shaft comprises a coaxial large diameter shaft section and a small diameter shaft section, a mounting plate is provided at the rear end of the large diameter shaft section, a threaded shaft section is coaxially provided at the front end of the small diameter shaft section, and a mounting plane is provided on the side of the threaded shaft section. The clamping plate is installed on the threaded shaft section.
[0009] As a further improvement of the utility model, the large diameter shaft section is arranged through the mounting hole, the mounting plate is fixed to the swing arm body by bolts or screws, the small diameter shaft section is arranged through the slide groove, the clamping plate is sleeved on the threaded shaft section, the center hole of the clamping plate matches the threaded shaft section, and the front end of the threaded shaft section is sleeved with a locking nut. The mounting part is located between the clamping plate and the swing arm body, and the clamping plate and the swing arm body are spaced from the mounting part; the swing arm body and the clamping plate of the flip rear door can move back and forth relative to the mounting part.
[0010] As a further improvement of the utility model, the upper surface of the stop block is arranged horizontally, and the stop block is close to the rear end of the slide groove.
[0011] As a further improvement of the utility model, the flip driving mechanism includes two oil cylinders symmetrically arranged on the left and right sides of the fixed box, one end of the oil cylinder is hinged to the fixed box, and the other ends of the two oil cylinders are respectively hinged to the two driving parts. The oil cylinder piston rod drives the flip rear door to flip through the driving part. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional structural diagram of the utility model.
[0013] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0014] Figure 3 for Figure 1 Enlarged view of point B in the middle.
[0015] Figure 4 This is a three-dimensional structural diagram of the pin and the pallet.
[0016] Figure 5 This is the front view of the flip rear door and cylinder.
[0017] Figure 6 The front view of the pin of the flip rear door moving to the rear end of the slide.
[0018] Figure 7 The front view of the flip-up rear door.
[0019] Figure 8 A three-dimensional structural diagram showing the pin of the flip rear door moving to the rear end of the slide slot.
[0020] Fig. 9 It is a three-dimensional structural diagram of the flip rear door flipped upward.
[0021] Among them, 1 fixed box, 2 flip rear door, 2a rear door body, 2b swing arm body, 2b1 driving part, 3 fixed bracket, 3a mounting part, 4 slide groove, 5 pin shaft, 501 large diameter shaft section, 502 small diameter shaft section, 503 mounting plate, 504 threaded shaft section, 6 clamping plate, 6a through surface, 6b center hole, 7 stop block, 8 mounting plane, 9 locking nut, 10 cylinder. DETAILED DESCRIPTION
[0022] like Figure 1-9As shown, a mechanical synchronization device for a flip rear door is provided, comprising a fixed box 1, the rear part of which is connected to a flip rear door 2, two symmetrical fixed brackets 3 are provided on the left and right sides of the rear part of the fixed box 1, a slide groove 4 is provided on the fixed bracket 3 along the length direction, and two left-right symmetrical pin shafts 5 are provided on the flip rear door 2, the axis of the pin shaft 5 is parallel to the width direction of the fixed box 1, the two pin shafts 5 are coaxially arranged, one end of the pin shaft 5 vertically passes through the slide groove 4 corresponding to the fixed bracket 3 and is sleeved with a card plate 6, a stop block 7 is provided on the inner side of the fixed bracket 3 below the slide groove 4, a horizontal passing surface 6a is provided on the lower side of the card plate 6, and the passing surface 6a is arranged corresponding to the stop block 7; a flip driving mechanism is provided corresponding to the flip rear door 2.
[0023] The fixing bracket 3 is vertically provided with a mounting portion 3a, the slide slot 4 is provided on the mounting portion 3a, and the stop block 7 is provided on the mounting portion 3a. The upper surface of the stop block 7 is horizontally provided, and the stop block 7 is close to the rear end of the slide slot 4.
[0024] The flip rear door 2 includes a rear door body 2a, and a swing arm body 2b extending forward is provided on both the left and right sides of the rear door body 2a. A mounting hole for allowing the pin shaft 5 to pass through is provided at the front end of the swing arm body 2b, and a driving part 2b1 tilted downward is also provided at the front end of the swing arm body 2b. The oil cylinder 10 is connected to the driving part 2b1 to drive the swing arm body 2b to swing; the pin shaft 5 is connected to the swing arm body 2b through the mounting hole. The pin shaft 5 includes a coaxial large-diameter shaft section 501 and a small-diameter shaft section 502. The large-diameter shaft section 501 is provided with a mounting plate 503 at the rear end, and the small-diameter shaft section 502 is coaxially provided with a threaded shaft section 504 at the front end, and a mounting plane 8 is provided on the side of the threaded shaft section 504. The clamping plate 6 is installed on the threaded shaft section 504. The large diameter shaft section 501 is arranged through the mounting hole, the mounting plate 503 is fixed to the swing arm body 2b by bolts or screws, the small diameter shaft section 502 is arranged through the slide groove 4, the clamping plate 6 is sleeved on the threaded shaft section 504, the center hole 6b of the clamping plate 6 matches the threaded shaft section 504, and the front end of the threaded shaft section 504 is sleeved with a locking nut 9. The mounting portion 3a is located between the clamping plate 6 and the swing arm body 2b, and the clamping plate 6 and the swing arm body 2b are spaced from the mounting portion 3a; the swing arm body 2b and the clamping plate 6 of the flip rear door 2 can move back and forth relative to the mounting portion 3a.
[0025] The flip driving mechanism comprises two oil cylinders 10 symmetrically arranged on the left and right sides of the fixed box 1, one end of the oil cylinder 10 is hinged to the fixed box 1, and the other ends of the two oil cylinders 10 are respectively hinged to two driving parts 2b1. The piston rod of the oil cylinder 10 drives the flip rear door 2 to flip through the driving part 2b1.
[0026] The pin 5 connecting the flip rear door 2 and the fixed box 1 of the utility model has a step surface added, and the pin 5 cooperates with the card plate 6. When the pin 5 rotates, the card plate 6 also rotates; the lower part of the slide 4 of the fixed bracket 3 is welded with a stopper 7, and the card plate 6 has a shape that cooperates with the step surface of the pin 5 to ensure that the card plate 6 is fixed on the pin 5. The lower part of the card plate 6 is a plane, and the stopper 7 can be positioned when the card plate 6 moves horizontally, and the nut locks the pin 5 and the card plate 6. During operation, the oil cylinder 10 drives the flip rear door 2 to move backward normally. When the pin 5 of the flip rear door 2 moves to the rear end of the slide 4, the oil cylinder 10 drives the flip rear door 2 to rotate upward to open the flip rear door 2; when the piston rod of the oil cylinder 10 contracts and drives the rear door to close, because the arc surface of the card plate 6 contacts the stopper 7, the flip rear door 2 cannot move backward and can only rotate at this point. The flip rear door 2 can only move forward when it rotates to a nearly horizontal state. The utility model has the advantages that it can ensure that when the flip rear door 2 of the box body flips back, it first rotates around the rotation point, and when the rear door is turned to a horizontal position, it can move backward horizontally, ensuring that the rear door will not interfere with the box body and be damaged, thereby reducing the failure rate.
[0027] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.
Claims
1. A mechanical synchronization device for a flip rear door, comprising a fixed box, the rear of which is connected to a flip rear door, characterized in that: Two symmetrical fixed brackets are provided on the left and right sides of the rear part of the fixed box, and a slide groove is opened on the fixed bracket along the length direction. Two left-right symmetrical pin shafts are provided on the flip rear door, and the axes of the pin shafts are parallel to the width direction of the fixed box. The two pin shafts are coaxially arranged, and the inner ends of the pin shafts vertically pass through the slide grooves of the corresponding fixed brackets and are sleeved with a clamping plate. A stop block is provided on the inner side of the fixed bracket below the slide groove, and a horizontal passing surface is provided on the lower side of the clamping plate, and the passing surface is arranged corresponding to the stop block; a flip driving mechanism is provided corresponding to the flip rear door.
2. A mechanical synchronization device for a flip rear door according to claim 1, characterized in that: A mounting portion is vertically arranged on the fixing bracket, a sliding groove is opened on the mounting portion, and a stop block is arranged on the mounting portion.
3. A mechanical synchronization device for a flip rear door according to claim 2, characterized in that: The flip rear door comprises a rear door body, and a swing arm body extending forward is arranged on both the left and right sides of the rear door body, a mounting hole for allowing a pin shaft to pass through is opened at the front end of the swing arm body, and a downwardly inclined driving part is also arranged at the front end of the swing arm body.
4. A mechanical synchronization device for a flip rear door according to claim 3, characterized in that: The pin shaft comprises a coaxial large-diameter shaft section and a small-diameter shaft section, a mounting plate is arranged at the rear end of the large-diameter shaft section, a threaded shaft section is coaxially arranged at the front end of the small-diameter shaft section, and a mounting plane is arranged on the side of the threaded shaft section.
5. A mechanical synchronization device for a flip rear door according to claim 4, characterized in that: The large diameter shaft section is arranged through the mounting hole, the mounting plate is fixed to the swing arm body by bolts or screws, the small diameter shaft section is arranged through the slide groove, the clamping plate is sleeved on the threaded shaft section, the center hole of the clamping plate matches the threaded shaft section, and a locking nut is sleeved on the front end of the threaded shaft section.
6. A mechanical synchronization device for a flip rear door according to any one of claims 1 to 5, characterized in that: The upper surface of the stop block is arranged horizontally, and the stop block is close to the rear end of the slide slot.
7. A mechanical synchronization device for a flip rear door according to any one of claims 3 to 5, characterized in that: The turning driving mechanism comprises two oil cylinders symmetrically arranged on the left and right sides of the fixed box, one end of the oil cylinder is hinged to the fixed box, and the other ends of the two oil cylinders are respectively hinged to the two driving parts.