Open wagon lower door frame double-side synchronous pressing type reinforcing device

Abstract

This invention relates to the field of railway vehicle safety protection equipment technology, and discloses a double-sided synchronous clamping reinforcement for the lower door frame of an open wagon. The reinforcement includes a wagon body with a door hinged to it. A door lock is fixedly installed on the front side of the wagon body, fitting against the front side of the door. A fixing mechanism extending to the front side of the wagon body and fitting against the wagon body is provided on the rear side of the wagon body. An adjustment mechanism extending to the left and right sides is provided inside the fixing mechanism, extending to the top of the fixing mechanism. A limiting mechanism extending to the inside of the fixing mechanism and connected to the fixing mechanism is provided on the front side of the fixing mechanism. A clamping mechanism fitting against the front side of the door lock is provided at the top of the adjustment mechanism. This double-sided synchronous clamping reinforcement for the lower door frame of an open wagon, by setting the fixing mechanism, adjustment mechanism, and limiting mechanism, achieves the purpose of adjusting the distance between the two sides according to needs. By setting the clamping mechanism, the clamping end is easily replaceable.

Description

Technical Field

[0001] This invention relates to the field of railway vehicle safety protection equipment technology, specifically to a double-sided synchronous clamping reinforcement for the lower door frame of an open wagon. Background Technology

[0002] The double-sided synchronous clamping reinforcement for the lower door frame of open wagons is a specialized device for auxiliary locking and reinforcement of the lower door or lower door frame of railway freight open wagons (such as the C64, C70, and C80 series). Existing technical solutions have the following drawbacks: The double-sided synchronous mechanism of existing reinforcement devices is mostly a fixed structure. The fixed design of the double-sided synchronous clamping mechanism cannot adaptively adjust to the width and thickness of the lower door frame of different wagon models. It can only adapt to a single specification of open wagon lower door frame, resulting in extremely poor versatility. When faced with different models and sizes of open wagon lower door frames, it cannot flexibly adapt, leading to uneven force and loose fit during reinforcement. This can easily cause loosening, displacement, or even failure to effectively fit the door frame, thus affecting the reinforcement effect and failing to meet the needs of multiple wagon models. Meanwhile, the clamping ends of existing reinforcement devices are mostly of fixed specifications and materials, making it impossible to replace them with suitable clamping ends according to the thickness and material of the lower door frame of different vehicle models. This not only easily scratches the surface of the door frame, but may also lead to cargo leakage and reinforcement failure due to the end not fitting tightly to the door frame, increasing transportation safety hazards. The lack of replaceable clamping ends means that it is impossible to replace the end ends of different sizes and materials to adapt to door frames of different thicknesses according to actual reinforcement needs, greatly reducing versatility and practicality. Therefore, a double-sided synchronous clamping reinforcement device for the lower door frame of open vehicles is proposed to solve the above-mentioned problems. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a double-sided synchronous clamping reinforcement for the lower door frame of a convertible, which has the advantages of adjustable spacing between the two sides and easy replacement of the clamping ends, thus solving the problems mentioned in the background art.

[0005] (II) Technical Solution

[0006] To achieve the aforementioned goal of adjustable spacing on both sides and easy replacement of the clamping end, the present invention provides the following technical solution: a double-sided synchronous clamping reinforcement for the lower door frame of a convertible, comprising a vehicle body, a door body hinged to the vehicle body, a door lock fixedly installed on the front side of the vehicle body and fitting against the front side of the door body, a fixing mechanism extending to the front side of the vehicle body and fitting against the vehicle body on the rear side of the vehicle body, an adjustment mechanism extending to the left and right sides of the fixing mechanism on the inner side of the fixing mechanism, the adjustment mechanism extending to the top of the fixing mechanism, a limiting mechanism extending to the inner side of the fixing mechanism and connected to the fixing mechanism on the front side of the fixing mechanism, and a clamping mechanism fitting against the front side of the door lock on the top of the adjustment mechanism;

[0007] The fixing mechanism includes a base frame, one end of which is movably mounted on the rear side of the vehicle body and fits against the bottom of the vehicle body. A box located on the front side of the vehicle body is fixedly mounted on the top of the base frame, and a handle extending to its front side is fixedly mounted on the bottom of the base frame. An electric push rod is fixedly mounted on the rear side of the box, and a stabilizing plate that fits against the front side of the vehicle body is fixedly mounted on the output end of the electric push rod.

[0008] Preferably, the adjustment mechanism includes a horizontal plate, and horizontal plates extending to the inner sides of the left and right sides of the box are slidably installed. Wedge-shaped grooves that fit against the inner wall of the box are fixedly installed on opposite sides of the two horizontal plates. Two support rods that penetrate the two wedge-shaped grooves are fixedly installed between the left and right sides of the inner wall of the box. Telescopic springs that are fixedly connected to the inner wall of the box and sleeved on the outside of the support rods are fixedly installed on opposite sides of the two wedge-shaped grooves. A vertical plate extending to the inner side of the top of the box is slidably installed. A trapezoidal block that is slidably connected to the inner side of the two wedge-shaped grooves is fixedly installed at the bottom of the vertical plate. A pressure plate is fixedly installed at the top of the vertical plate.

[0009] Preferably, the limiting mechanism includes a U-shaped cylinder, with a U-shaped cylinder extending to its inner side and located in front of the vertical plate slidably mounted on the front side of the box body, a fixing spring fixedly mounted on the rear side of the inner wall of the U-shaped cylinder and fixedly connected to the front side of the inner wall of the box body, a pull rod fixedly mounted on the inner side of the U-shaped cylinder and located in front of the box body, and a wedge block that engages with the vertical plate fixedly mounted on the rear side of the U-shaped cylinder.

[0010] Preferably, the clamping mechanism includes a fixed frame. A fixed frame located outside the box body is fixedly installed on the top of the horizontal plate. An electric telescopic rod is fixedly installed on the inner side of the fixed frame. The output end of the electric telescopic rod extends to the rear side of the fixed frame and is fixedly installed with a mounting cylinder. A support rail is fixedly installed on the inner bottom wall of the mounting cylinder. A movable block, movably connected to the inner side of the mounting cylinder and extending to the top of the mounting cylinder, is movably installed on the outer side of the support rail. A return spring, conforming to the movable block, is fixedly installed on one inner wall of the mounting cylinder. A fixed spring is installed on the top of the movable block. The device is equipped with a U-shaped plate extending to the rear side of the mounting cylinder. A clamping end that fits against the rear side of the mounting cylinder is fixedly installed on the outer side of the U-shaped plate. A U-shaped frame is fixedly installed on the front side of the mounting cylinder. A movable handle extending to the front side of the U-shaped frame is slidably installed between the upper and lower sides of the inner wall of the U-shaped frame. A wedge-shaped block extending to the inner side of the mounting cylinder and fitting against one side of the movable block is fixedly installed on the inner side of the movable handle. A cylinder is fixedly installed on the front side of the wedge-shaped block. A connecting spring that is fixedly connected to the front side of the inner wall of the U-shaped frame is fixedly installed on the inner side of the cylinder.

[0011] Preferably, the outer side of the handle is covered with an anti-slip rubber sleeve, the surface of which is provided with anti-slip texture, and the anti-slip rubber sleeve is bonded and fixed to the handle with strong adhesive.

[0012] Preferably, a rubber buffer pad is fixedly installed on the rear side of the stabilizing plate. The thickness of the rubber buffer pad is not less than 5mm, and the surface of the rubber buffer pad is provided with anti-slip ridges.

[0013] Preferably, the outer side of the support rod is provided with a lubricating coating, the lubricating coating is a polytetrafluoroethylene coating, and the thickness of the lubricating coating is 10-20 μm.

[0014] Preferably, the bottom two sides of the trapezoidal block are provided with rounded corner transition structures, the radius of the rounded corners is one-third to one-half of the thickness of the side surface of the trapezoidal block, and the surface of the trapezoidal block is chrome plated.

[0015] Preferably, an anti-slip rubber pad is fixedly installed on the inner side of the pressing end, the surface of the anti-slip rubber pad is provided with a grid-like anti-slip texture, and the anti-slip rubber pad is detachably connected to the pressing end by bolts.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a double-sided synchronous clamping reinforcement for the lower door frame of a convertible, which has the following advantages:

[0018] 1. This open wagon lower door frame double-sided synchronous clamping reinforcement device, through the setting of a fixing mechanism, an adjustment mechanism, and a limiting mechanism, has its base frame installed on the rear side of the vehicle body. The base frame angle is manually adjusted by a handle to position the box body on the front side of the vehicle body. An electric push rod pushes the stabilizing plate to move backward until it is tightly fitted to the front side of the vehicle body. The rubber buffer pad (thickness ≥5mm) absorbs vibration through deformation, and the anti-slip ridges enhance friction, ensuring the box body is stably positioned in the horizontal direction. When it is necessary to adjust the clamping ends on both sides, pull the pull rod to move the U-shaped cylinder and wedge block forward, releasing the wedge block's limitation on the vertical plate. Then, press down on the pressure plate to drive the vertical plate and trapezoidal block downward. The inclined surface of the trapezoidal block contacts the inner inclined surface of the wedge-shaped groove block, converting the vertical force into a horizontal component force, which pushes the two wedge-shaped groove blocks to slide outward along the support rod. The telescopic spring is compressed and stores elastic potential energy. The horizontal plate moves outward synchronously with the wedge-shaped groove blocks, realizing the initial synchronous expansion of the double-sided door. The polytetrafluoroethylene lubricating coating (10-20μm thick) of the support rod reduces the coefficient of friction, ensuring smooth sliding of the wedge-shaped groove blocks and avoiding jamming. When the vertical plate moves to the set position, the wedge-shaped block is locked into the groove of the vertical plate, restricting its upward rebound and realizing the mechanical locking of the adjustment mechanism, thereby completing the adjustment and achieving the purpose of adjusting the double-sided spacing according to needs.

[0019] 2. This convertible lower door frame double-sided synchronous clamping reinforcement device, through the setting of a clamping mechanism, uses an electric telescopic rod to push the mounting cylinder to move backward, so that the clamping end is close to the door lock. When it is necessary to remove the clamping end, the wedge block is pulled forward by moving the handle, which causes the cylinder to clamp the connecting spring, releasing the wedge block's limitation on the moving block. The reset spring pushes the moving block to the left, so the moving block can be removed from the mounting cylinder. Different models of clamping ends can be installed in the mounting cylinder through the U-shaped plate and the moving block, achieving the purpose of easy replacement of the clamping end. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the structure of the present invention;

[0021] Figure 2 This is a perspective cross-sectional view of a portion of the structure of the present invention;

[0022] Figure 3 This is a rear sectional perspective view of a partial structure of the present invention;

[0023] Figure 4 This is a sectional perspective view of the adjustment mechanism of the present invention;

[0024] Figure 5 This is an exploded perspective view of the adjustment mechanism of the present invention.

[0025] Figure 6 This is a partially exploded perspective view of the limiting mechanism of the present invention;

[0026] Figure 7 This is a partial rear perspective view of the clamping mechanism of the present invention;

[0027] Figure 8 This is a partial sectional perspective view of the clamping mechanism of the present invention;

[0028] Figure 9 This is a partial exploded sectional view of the clamping mechanism of the present invention.

[0029] In the diagram: 1. Vehicle body, 2. Door body, 3. Door lock, 4. Fixing mechanism, 41. Base frame, 42. Box body, 43. Handle, 44. Electric push rod, 45. Stabilizing plate, 5. Adjusting mechanism, 51. Horizontal plate, 52. Wedge-shaped groove block, 53. Support rod, 54. Telescopic spring, 55. Vertical plate, 56. Trapezoidal block, 57. Pressure plate, 6. Limiting mechanism, 61. U-shaped cylinder, 62. Fixing spring, 63. Pull rod, 64. Wedge-shaped block, 7. Pressing mechanism, 701. Fixing frame, 702. Electric telescopic rod, 703. Mounting cylinder, 704. Support rail, 705. Moving block, 706. Return spring, 707. U-shaped plate, 708. Pressing end, 709. U-shaped frame, 710. Moving handle, 711. Wedge-shaped block, 712. Cylinder, 713. Connecting spring. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1-9 The present invention provides a technical solution: a double-sided synchronous clamping reinforcement for the lower door frame of a convertible, including a vehicle body 1, a door body 2 hinged to the vehicle body 1, a door lock 3 fixedly installed on the front side of the vehicle body 1 and fitting against the front side of the door body 2, a fixing mechanism 4 extending to the front side of the vehicle body 1 and fitting against the vehicle body 1 on the rear side of the vehicle body 1, an adjustment mechanism 5 extending to the left and right sides of the fixing mechanism 4 on the inner side of the fixing mechanism 4, the adjustment mechanism 5 extending to the top of the fixing mechanism 4, a limiting mechanism 6 extending to the inner side of the fixing mechanism 4 and connected to the fixing mechanism 4 on the front side of the fixing mechanism 4, and a clamping mechanism 7 fitting against the front side of the door lock 3 on the top of the adjustment mechanism 5.

[0032] The fixing mechanism 4 includes a base frame 41. One end of the base frame 41 is movably mounted on the rear side of the vehicle body 1 and fits against the bottom of the vehicle body 1. A box 42 located on the front side of the vehicle body 1 is fixedly mounted on the top of the base frame 41. A handle 43 extending to its front side is fixedly mounted on the bottom of the base frame 41. An electric push rod 44 is fixedly mounted on the rear side of the box 42. A stabilizing plate 45 that fits against the front side of the vehicle body 1 is fixedly mounted on the output end of the electric push rod 44.

[0033] The outer side of the handle 43 is covered with an anti-slip rubber sleeve with anti-slip texture on the surface. The anti-slip rubber sleeve is bonded to the handle 43 with strong adhesive. A rubber buffer pad is fixedly installed on the rear side of the stabilizing plate 45. The thickness of the rubber buffer pad is not less than 5mm, and the surface of the rubber buffer pad is covered with anti-slip embossed texture.

[0034] The base frame 41 serves as the support base for the entire reinforcement unit. One end is hinged to the rear of the vehicle body 1, and the other end is adjustable via a handle 43 to achieve a flexible connection with the vehicle body 1. The bottom of the base frame fits snugly against the bottom of the vehicle body 1 to ensure a stable center of gravity during installation and prevent tilting. The housing 42 is the core outer shell of the fixing mechanism 4, housing components such as the electric push rod 44 and the adjustment mechanism 5, and providing structural protection. It is located at the front of the vehicle body 1 and is fixed by the base frame 41, fitting snugly against the front of the vehicle body 1 to form a support surface. The handle 43 is a tool for manually adjusting the base frame 41, facilitating adjustments to the reinforcement by the operator. The device is fitted with an anti-slip rubber sleeve (with anti-slip texture on the surface) on the outside, which is bonded with strong adhesive to enhance grip and prevent slippage during operation. The electric push rod 44 provides automatic thrust to drive the stabilizing plate 45 to move backward, so that the reinforcement is tightly fitted to the front of the vehicle body 1. Through electric drive, it can achieve fast and precise positioning adjustment. The stabilizing plate 45 directly contacts the clamping component on the front of the vehicle body 1. The rubber buffer pad (thickness ≥5mm) absorbs vibration, and the anti-slip ridges enhance friction to ensure that the reinforcement does not loosen due to vibration during transportation and maintains stability.

[0035] The adjustment mechanism 5 includes a horizontal plate 51. Horizontal plates 51 extending to the inner side of the box body 42 are slidably installed on both the left and right sides. Wedge-shaped groove blocks 52 that fit against the inner wall of the box body 42 are fixedly installed on opposite sides of the two horizontal plates 51. Two support rods 53 that penetrate the two wedge-shaped groove blocks 52 are fixedly installed between the left and right sides of the inner wall of the box body 42. Telescopic springs 54 that are fixedly connected to the inner wall of the box body 42 and sleeved on the outside of the support rods 53 are fixedly installed on opposite sides of the two wedge-shaped groove blocks 52. A vertical plate 55 extending to the inner side of the box body 42 is slidably installed on the top of the box body 42. A trapezoidal block 56 that is slidably connected to the inner side of the two wedge-shaped groove blocks 52 is fixedly installed at the bottom of the vertical plate 55. A pressure plate 57 is fixedly installed on the top of the vertical plate 55.

[0036] The outer side of the support rod 53 is provided with a lubricating coating, which is a polytetrafluoroethylene coating with a thickness of 10-20μm. The bottom two sides of the trapezoidal block 56 are provided with rounded corner transition structures, the radius of which is one-third to one-half of the thickness of the side of the trapezoidal block 56, and the surface of the trapezoidal block 56 is chrome plated.

[0037] The horizontal plate 51 acts as a bridge connecting the box body 42 and the clamping mechanism 7. It slides to achieve synchronous expansion or contraction on both sides, moving the fixed frame 701 and the clamping mechanism 7. The wedge-shaped groove block 52 converts the vertical movement of the vertical plate 55 into the horizontal movement of the horizontal plate 51, achieving mechanical linkage. Its inner side is slidably connected to the trapezoidal block 56, and its outer side is connected to the inner wall of the box body 42 via a telescopic spring 54. The support rod 53 provides a sliding track for the wedge-shaped groove block 52, ensuring its horizontal movement stability. The outer side is coated with a polytetrafluoroethylene lubricating coating (10-20 μm thick) to reduce the coefficient of friction and wear. The telescopic spring 54 stores elastic potential energy, pushing the wedge-shaped groove block when the vertical plate 55 moves upward. Block 52 resets, enabling the horizontal plate 51 to automatically retract, ensuring that the adjustment mechanism 5 maintains its initial state without external force. The vertical plate 55 transmits the downward pressure of the pressure plate 57 to the trapezoidal block 56, driving the wedge-shaped groove block 52 to move in tandem. It is slidably installed on the top of the box body 42, with the trapezoidal block 56 connected to the bottom and the pressure plate 57 fixed at the top. The trapezoidal block 56 cooperates with the wedge-shaped groove block 52 through its inclined surface, converting the vertical force into a horizontal component force. The bottom two sides are provided with rounded corner transition structures (radius is 1 / 3-1 / 2 of the side thickness) to reduce stress concentration. The surface is chrome-plated to improve wear resistance. The pressure plate 57 is a component that is manually pressed by the operator, driving the entire adjustment mechanism to move in tandem, achieving synchronous expansion of the two sides of the door through a single action.

[0038] The limiting mechanism 6 includes a U-shaped cylinder 61. A U-shaped cylinder 61 extending to the inside of the box body 42 and located in front of the vertical plate 55 is slidably installed on the front side of the box body 42. A fixing spring 62 fixedly connected to the front side of the inner wall of the U-shaped cylinder 61 is fixedly installed on the rear side of the inner wall of the box body 42. A pull rod 63 located in front of the box body 42 is fixedly installed on the inner side of the U-shaped cylinder 61. A wedge block 64 that engages with the vertical plate 55 is fixedly installed on the rear side of the U-shaped cylinder 61.

[0039] The U-shaped cylinder 61 is slidably installed on the front side of the box 42, accommodating the fixing spring 62 and the wedge block 64, serving as a carrier for limiting the position. It can slide back and forth, controlling the engagement or disengagement of the wedge block 64 with the vertical plate 55. The fixing spring 62 provides elasticity, keeping the U-shaped cylinder 61 and the wedge block 64 in a backward trend to ensure engagement stability. Without external force, the wedge block 64 automatically engages with the slot of the vertical plate 55. The pull rod 63, a manually pulled component, is used to unlock the limiting mechanism 6. When pulled, it moves the U-shaped cylinder 61 forward, causing the wedge block 64 to disengage from the slot, allowing the vertical plate 55 to move up and down. The limiting component that engages the wedge block 64 with the vertical plate 55 prevents the adjustment mechanism from springing back during transportation. The top is sloped, cooperating with the slot of the vertical plate 55 to achieve one-way locking.

[0040] The clamping mechanism 7 includes a fixed frame 701. A fixed frame 701 is fixedly installed on the top of the horizontal plate 51, located outside the box body 42. An electric telescopic rod 702 is fixedly installed on the inner side of the fixed frame 701. The output end of the electric telescopic rod 702 extends to the rear side of the fixed frame 701 and is fixedly installed with a mounting cylinder 703. A support rail 704 is fixedly installed on the inner bottom wall of the mounting cylinder 703. A movable block 705 is movably installed on the outer side of the support rail 704, movably connected to the inner side of the mounting cylinder 703 and extending to the top of the mounting cylinder 703. A return spring 706, which fits against the movable block 705, is fixedly installed on one inner wall of the mounting cylinder 703. An end-extending spring 706 is fixedly installed on the top of the movable block 705. A U-shaped plate 707 extends to the rear side of the mounting cylinder 703. A clamping end 708 that fits against the rear side of the mounting cylinder 703 is fixedly installed on the outer side of the U-shaped plate 707. A U-shaped frame 709 is fixedly installed on the front side of the mounting cylinder 703. A moving handle 710 extending to the front side of the U-shaped frame 709 is slidably installed between the upper and lower sides of the inner wall of the U-shaped frame 709. A wedge-shaped block 711 extending to the inner side of the mounting cylinder 703 and fitting against one side of the moving block 705 is fixedly installed on the inner side of the moving handle 710. A cylinder 712 is fixedly installed on the front side of the wedge-shaped block 711. A connecting spring 713 that is fixedly connected to the front side of the inner wall of the U-shaped frame 709 is fixedly installed on the inner side of the cylinder 712.

[0041] An anti-slip rubber pad is fixedly installed on the inner side of the clamping end 708. The surface of the anti-slip rubber pad is provided with a grid-like anti-slip texture, and the anti-slip rubber pad is detachably connected to the clamping end 708 by bolts.

[0042] The fixed frame 701 is a fixing component connecting the horizontal plate 51 and the electric telescopic rod 702, transmitting horizontal movement to the clamping assembly. It is located outside the box 42 and fixed to the top of the horizontal plate 51. The electric telescopic rod 702 provides automatic thrust, driving the mounting cylinder 703 and the clamping end 708 to move backward, thereby clamping the door lock 3. The clamping force can be precisely adjusted via electric drive. The mounting cylinder 703 accommodates components such as the moving block 705 and the return spring 706, providing installation space for the clamping end 708. It is connected to the U-shaped frame 709 on the front and the rear side... The opening allows the U-shaped plate 707 to extend, and the support rail 704 provides a sliding track for the moving block 705 to ensure its vertical movement stability. It is movably connected to the inner side of the moving block 705, restricting its direction of movement. The moving block 705 transmits the thrust of the wedge-shaped block 711, driving the U-shaped plate 707 and the pressing end 708 to move up and down. Automatic return is achieved through the return spring 706, which stores elastic potential energy. When the wedge-shaped block 711 moves forward, it pushes the moving block 705 to return to its original position, ensuring that the pressing end 708 maintains its initial position when there is no external force. The U-shaped plate 707 is a transition component connecting the moving block 705 and the pressing end 708, transmitting vertical movement. The pressing end 708 is fixed on the outer side, and connected to the top of the moving block 705 on the inner side. The pressing end 708 directly contacts the pressing component on the front side of the door lock 3. Friction is enhanced by an anti-slip rubber pad (grid-like anti-slip texture). The anti-slip rubber pad is detachably connected by bolts for easy replacement of worn parts. The U-shaped frame 709 is a support structure that fixes the moving handle 710 and the connecting spring 713, providing operating space for manual adjustment. Located at the front of the mounting cylinder 703, the movable handle 710 manually adjusts the component, driving the wedge block 711 to achieve fine adjustment of the height of the clamping end 708 by moving it back and forth. The wedge block 711 converts the horizontal movement of the movable handle 710 into the vertical movement of pushing the movable block 705. The cylinder 712 and the connecting spring 713 provide a reset force for the wedge block 711, ensuring that the movable handle 710 automatically returns to its original position after being released. One end of the connecting spring 713 is fixed to the front of the inner wall of the U-shaped frame 709, and the other end is connected to the cylinder 712.

[0043] In use, hinge the base frame 41 to the rear of the vehicle body 1. Hold the handle 43 with the anti-slip rubber sleeve (the surface anti-slip texture enhances grip) and adjust the angle of the base frame so that the box body 42 is located at the front of the vehicle body 1. Activate the electric push rod 44 to push the stabilizing plate 45 backward until the rubber buffer pad is in close contact with the front of the vehicle body 1, completing the positioning of the fixing mechanism 4. Pull the pull rod 63 to unlock the limiting mechanism 6, press down on the pressure plate 57 to drive the adjustment mechanism. Observe the outward movement of the horizontal plate 51 to ensure that both sides of the door are aligned. Expand the step to the set position, check whether the wedge block 64 is stuck into the vertical plate 55, confirm that the limiting mechanism 6 is locked, start the electric telescopic rod 702, push the mounting cylinder 703 to move backward, so that the pressing end 708 is close to the door lock 3. During transportation, check the fit between the pressing end 708 and the door lock 3 regularly, and repeat the adjustment steps if necessary. After transportation is completed, retract the electric telescopic rod 702 to move the pressing end 708 away from the door lock 3, retract the electric push rod 44, loosen the stabilizing plate 45, and remove the reinforcement.

[0044] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0045] In summary, this double-sided synchronous clamping reinforcement for the lower door frame of the open wagon utilizes a fixing mechanism 4, an adjusting mechanism 5, and a limiting mechanism 6. The base frame 41 is installed at the rear of the vehicle body 1. The angle of the base frame is manually adjusted using the handle 43, positioning the box 42 at the front of the vehicle body 1. An electric push rod 44 pushes the stabilizing plate 45 backward until it is tightly fitted against the front of the vehicle body 1. A rubber buffer pad (thickness ≥ 5mm) absorbs vibration through deformation, and anti-slip ridges enhance friction, ensuring the box 42 is stably positioned horizontally. When adjustment is needed... When the side-pressed end 708 is pressed, the pull rod 63 is pulled, causing the U-shaped cylinder 61 and wedge block 64 to move forward, releasing the wedge block 64 from limiting the vertical plate 55. Then, the pressure plate 57 is pressed down, driving the vertical plate 55 and trapezoidal block 56 to move downward. The inclined surface of the trapezoidal block 56 contacts the inner inclined surface of the wedge groove block 52, converting the vertical force into a horizontal component force, pushing the two wedge groove blocks 52 to slide outward along the support rod 53. The telescopic spring 54 is compressed, storing elastic potential energy. The horizontal plate 51 moves outward synchronously with the wedge groove block 52, realizing the initial movement of the double-sided door. The expansion is synchronized, and the PTFE lubricating coating (10-20μm thick) of the support rod 53 reduces the coefficient of friction, ensuring smooth sliding of the wedge-shaped groove block 52 and preventing jamming. When the vertical plate 55 moves to the set position, the wedge block 64 engages with the groove of the vertical plate 55, limiting its upward rebound and achieving mechanical locking of the adjustment mechanism 5, thereby completing the adjustment and realizing the purpose of adjusting the distance on both sides according to needs. By setting the clamping mechanism 7, the electric telescopic rod 702 pushes the mounting cylinder 703 to move backward, so that the clamping end 708 Approaching the door lock 3, when it is necessary to disassemble the clamping end 708, the wedge block 711 is moved forward by moving the handle 710, which causes the cylinder 712 to press against the connecting spring 713, releasing the wedge block 711 from limiting the moving block 705. The reset spring 706 pushes the moving block 705 to the left, so that the moving block 705 can be removed from the mounting cylinder 703. Different models of clamping ends 708 can be installed in the mounting cylinder 703 through the U-shaped plate 707 and the moving block 705, realizing the purpose of easy replacement of the clamping end.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-sided synchronous clamping reinforcement for the lower door frame of a convertible, comprising a vehicle body (1), a door body (2) hinged to the vehicle body (1), and a door lock (3) fixedly installed on the front side of the vehicle body (1) and fitting against the front side of the door body (2), characterized in that: The rear side of the vehicle body (1) is provided with a fixing mechanism (4) that extends to the front side of the vehicle body (1) and fits against the vehicle body (1). The inner side of the fixing mechanism (4) is provided with an adjustment mechanism (5) that extends to its left and right sides. The adjustment mechanism (5) extends to the top of the fixing mechanism (4). The front side of the fixing mechanism (4) is provided with a limiting mechanism (6) that extends to its inner side and connects to the fixing mechanism (4). The top of the adjustment mechanism (5) is provided with a pressing mechanism (7) that fits against the front side of the door lock (3). The fixing mechanism (4) includes a base frame (41), one end of which is movably mounted on the rear side of the vehicle body (1) and fits against the bottom of the vehicle body (1). A box (42) located on the front side of the vehicle body (1) is fixedly mounted on the top of the base frame (41). A handle (43) extending to its front side is fixedly mounted on the bottom of the base frame (41). An electric push rod (44) is fixedly mounted on the rear side of the box (42). A stabilizing plate (45) that fits against the front side of the vehicle body (1) is fixedly mounted on the output end of the electric push rod (44).

2. The double-sided synchronous clamping reinforcement for the lower door frame of a convertible according to claim 1, characterized in that: The adjustment mechanism (5) includes a horizontal plate (51). Horizontal plates (51) extending to the inner side of the box body (42) are slidably installed on both the left and right sides. Wedge-shaped groove blocks (52) that fit against the inner wall of the box body (42) are fixedly installed on opposite sides of the two horizontal plates (51). Two support rods (53) that penetrate the two wedge-shaped groove blocks (52) are fixedly installed between the left and right sides of the inner wall of the box body (42). Telescopic springs (54) that are fixedly connected to the inner wall of the box body (42) and sleeved on the outside of the support rods (53) are fixedly installed on opposite sides of the two wedge-shaped groove blocks (52). A vertical plate (55) extending to the inner side of the box body (42) is slidably installed on the top of the box body (42). A trapezoidal block (56) that is slidably connected to the inner side of the two wedge-shaped groove blocks (52) is fixedly installed on the bottom of the vertical plate (55). A pressure plate (57) is fixedly installed on the top of the vertical plate (55).

3. The double-sided synchronous clamping reinforcement for the lower door frame of a convertible according to claim 2, characterized in that: The limiting mechanism (6) includes a U-shaped tube (61). The front side of the box body (42) is slidably mounted with a U-shaped tube (61) extending to its inner side and located in front of the vertical plate (55). The rear side of the inner wall of the U-shaped tube (61) is fixedly mounted with a fixing spring (62) that is fixedly connected to the front side of the inner wall of the box body (42). The inner side of the U-shaped tube (61) is fixedly mounted with a pull rod (63) located in front of the box body (42). The rear side of the U-shaped tube (61) is fixedly mounted with a wedge block (64) that engages with the vertical plate (55).

4. The double-sided synchronous clamping reinforcement for the lower door frame of a convertible according to claim 2, characterized in that: The clamping mechanism (7) includes a fixed frame (701). The fixed frame (701) located outside the box body (42) is fixedly installed on the top of the horizontal plate (51). An electric telescopic rod (702) is fixedly installed on the inner side of the fixed frame (701). The output end of the electric telescopic rod (702) extends to the rear side of the fixed frame (701) and is fixedly installed with an installation cylinder (703). A support rail (704) is fixedly installed on the inner bottom wall of the installation cylinder (703). A moving block (705) that is movably connected to the inner side of the installation cylinder (703) and extends to the top of the installation cylinder (703) is movably installed on the outer side of the support rail (704). A return spring (706) that fits against the moving block (705) is fixedly installed on one inner wall of the installation cylinder (703). A return spring (706) that fits against the moving block (705) is fixedly installed on the top of the moving block (705). A U-shaped plate (707) extends to the rear side of the mounting cylinder (703) at one end. A clamping end (708) that fits against the rear side of the mounting cylinder (703) is fixedly installed on the outer side of the U-shaped plate (707). A U-shaped frame (709) is fixedly installed on the front side of the mounting cylinder (703). A moving handle (710) extending to the front side of the U-shaped frame (709) is slidably installed between the upper and lower sides of the inner wall of the U-shaped frame (709). A wedge-shaped block (711) extending to the inner side of the mounting cylinder (703) and fitting against one side of the moving block (705) is fixedly installed on the inner side of the moving handle (710). A cylinder (712) is fixedly installed on the front side of the wedge-shaped block (711). A connecting spring (713) that is fixedly connected to the front side of the inner wall of the U-shaped frame (709) is fixedly installed on the inner side of the cylinder (712).

5. The double-sided synchronous clamping reinforcement for the lower door frame of a convertible according to claim 1, characterized in that: The handle (43) is covered with an anti-slip rubber sleeve on the outside. The surface of the anti-slip rubber sleeve is provided with anti-slip texture. The anti-slip rubber sleeve is bonded and fixed to the handle (43) with strong adhesive.

6. The double-sided synchronous clamping reinforcement for the lower door frame of a convertible according to claim 1, characterized in that: A rubber buffer pad is fixedly installed on the rear side of the stabilizing plate (45). The thickness of the rubber buffer pad is not less than 5mm, and the surface of the rubber buffer pad is provided with anti-slip ridges.

7. A double-sided synchronous clamping reinforcement for the lower door frame of a convertible according to claim 2, characterized in that: The outer side of the support rod (53) is provided with a lubricating coating, which is a polytetrafluoroethylene coating and has a thickness of 10-20 μm.

8. A double-sided synchronous clamping reinforcement for the lower door frame of a convertible according to claim 2, characterized in that: Both sides of the bottom of the trapezoidal block (56) are provided with rounded corner transition structures. The radius of the rounded corner is one-third to one-half of the thickness of the side of the trapezoidal block (56), and the surface of the trapezoidal block (56) is chrome plated.

9. A double-sided synchronous clamping reinforcement for the lower door frame of a convertible according to claim 4, characterized in that: An anti-slip rubber pad is fixedly installed on the inner side of the clamping end (708). The surface of the anti-slip rubber pad is provided with a grid-like anti-slip pattern, and the anti-slip rubber pad and the clamping end (708) are detachably connected by bolts.

Images