Safe transfer device for random test piece in vulcanization process

Abstract

The utility model discloses a safe transfer device for random test pieces in a vulcanization process, and belongs to the technical field of solid rocket engine charging. The device comprises a transfer cart, a flat car and a charging basket, the transfer cart moves in a vulcanization workshop, and the flat car is placed on the upper surface of the transfer cart. The flat car is of a cuboid open structure, multiple pairs of supporting wheels are arranged at the bottom, and multiple charging baskets are placed in the opening. The charging basket is of a cuboid open structure, and random test pieces are placed in the opening. The device can realize safe transfer of random test pieces.

Description

Technical Field

[0001] This utility model relates to a safe transfer device for random test pieces in a vulcanization process, belonging to the field of solid rocket engine propellant technology. Background Technology

[0002] In the production process of solid rocket engines, in order to predict and test the performance of the product, it is necessary to make test pieces using the same propellant materials as the final product to characterize the engine's performance. The types of test pieces are mainly small 127 engines, square billets, and rectangular test pieces.

[0003] The vulcanization process requires the handling of dozens of random test pieces daily, with a total weight of several hundred kilograms. Currently, the traditional handling method is manual labor, which poses certain safety hazards. Firstly, there is a risk of test pieces falling during transport. Test pieces containing solid propellants, if subjected to a violent impact, could ignite or even explode, further igniting other products stored in the vulcanization room and causing a serious accident. Furthermore, manual handling of this level of work is extremely strenuous, and the continuous lifting and carrying over many years can damage the health of the workers. Utility Model Content

[0004] The technical problem solved by this utility model is to overcome the shortcomings of the prior art and propose a safe transfer device for random test pieces in the vulcanization process, which solves the existing safety hazards by using mechanical assistance.

[0005] The technical solution of this utility model is:

[0006] A safe transfer device for random test pieces in a vulcanization process includes a transfer trolley, a flatbed cart, and a material basket;

[0007] The transfer trolley moves within the vulcanization workshop, with a flatbed cart placed on its upper surface.

[0008] The flatbed truck has a rectangular open structure with multiple pairs of support wheels at the bottom and multiple material baskets placed inside the open.

[0009] The material basket is a rectangular open structure, and random test specimens are placed inside the open.

[0010] Furthermore, the transfer trolley includes a body, a hydraulic cylinder, and support wheels;

[0011] The vehicle body includes an upper plate, a lower frame, and a support frame; the upper plate is a flat plate structure, and a flatbed cart is placed on the upper surface of the upper plate; the lower frame is a rectangular frame; the support frame connects the upper plate and the lower frame, and is connected to the output end of a hydraulic cylinder. Driven by the hydraulic cylinder, the support frame rises or falls, causing the upper plate to move.

[0012] Multiple pairs of support wheels are evenly arranged on the lower surface of the lower frame. The pair of support wheels at the frontmost position are directional wheels, while the other pairs of support wheels are omnidirectional wheels.

[0013] Furthermore, multiple baffles are provided on the upper surface of the upper plate. Among them, two baffles are semi-enclosed structures. The size of one baffle is designed according to the outer diameter of the flatbed cart, and the front of the flatbed cart is locked inside the baffle. The other baffle covers the rear support wheel of the placed flatbed cart. There are also multiple baffles with a cuboid structure, which are set inside the support wheel of the placed flatbed cart. The baffles on the same side of the upper plate are arranged in a collinear manner.

[0014] Furthermore, all the support wheels of the transfer trolley are anti-static TPR rubber wheels.

[0015] Furthermore, the surface of the flatbed cart that contacts the material frame is covered with an anti-static mat.

[0016] Furthermore, the flatbed truck is equipped with multiple pairs of support wheels at its bottom, with the foremost pair being directional wheels and the rear two pairs being omnidirectional wheels.

[0017] Furthermore, the pair of support wheels at the very front of the flatbed are directional wheels with brakes.

[0018] The advantages of this utility model compared with the prior art are as follows:

[0019] (1) The transfer trolley designed for this device has explosion-proof and lifting functions. When using the transfer trolley to dock with the truck bed, adjust the platform of the vehicle to the same position as the truck bed. After docking with the truck bed, pull the flatbed truck and the two material frames together onto the transfer trolley. Then push the transfer trolley to the door of the vulcanization room, lower the height of the transfer trolley to dock with the ground of the vulcanization room. After completion, the flatbed truck and the material frames can be pushed into the ground of the vulcanization room.

[0020] (2) The flatbed cart designed for this device can move freely between transport vehicles, transfer trolleys, and the floor of the vulcanizing room. It also has a brake locking function, which prevents the cart from moving once it is in position. Attached Figure Description

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the safe transfer device according to an embodiment of the present utility model;

[0023] Figure 2This is a schematic diagram of a two-sided symmetrical double-locking system according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the baffle strip in an embodiment of the present utility model. Detailed Implementation

[0025] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0026] This utility model proposes a safe transfer device for random test pieces in a vulcanization process, including a transfer trolley 1, a flatbed trolley 2, and a material basket 3, as follows: Figure 1 As shown. The transfer trolley 1 moves along the central aisle to carry the flatbed trolley 2. Each flatbed trolley 2 can carry two material baskets 3 and can move freely between the transport vehicle, the transfer trolley 1, and the vulcanizing room floor. The material baskets 3 are first placed in the flatbed trolley, and then the flatbed trolley 2 is placed in the transport vehicle, which then transports the products between different workshops.

[0027] The contact area between the flatbed cart 2 and the material frame 3 is covered with an anti-static mat. The bottom of the flatbed cart 2 is equipped with three pairs of 2.5-inch support wheels on the left and right sides, with a wheel diameter of approximately 60-65mm and a single wheel load capacity of 90kg. The front pair consists of directional wheels, while the rear two pairs are swivel wheels. This multi-wheel support system prevents wheel movement at transition gaps during transitions between different areas, ensuring product safety. The flatbed cart 2 has dimensions of 1400mm × 540mm × 168mm.

[0028] The body of the transfer trolley 1 is based on the PTD1000 manual hydraulic lifting vehicle and is customized to enable the flatbed trolley 2 to transfer between the transport vehicle and the vulcanizing room floor.

[0029] The manual hydraulic lift truck uses a foot pedal to raise the work platform via a hydraulic cylinder, allowing for easy and simple height adjustment. Stepping on the foot pedal operates the hydraulic pump, causing the work platform to rise smoothly; operating the control knob or lifting lever lowers the platform smoothly. The frame is equipped with fixed wheels (front wheels) and swivel wheels (rear wheels), allowing for rotation in any direction and making operation flexible and simple.

[0030] The PTD1000 manual hydraulic lifting trolley has a rated load capacity of 1000kg, and the work platform can be adjusted arbitrarily between 380mm and 1000mm. The standard platform size is 1210×610mm. To meet usage requirements, some modifications have been made to the standard lifting trolley, mainly including enlarging the platform (length 1650mm, width 700mm), adding a pair of swivel casters to improve the stability of the trolley's movement within the sulfur processing room and overcome the obstacles posed by ground track grooves; and adding a self-locking mechanism to the guide profile assembly on the platform, such as... Figure 2 , Figure 3 As shown, this design prevents the flatbed cart from falling off and allows for accurate pushing and pulling of the flatbed cart for locking.

[0031] Because the central passageway of the vulcanizing workshop is designed with vulcanizing vehicle track grooves, the bottom of the transfer trolley 1 is designed with 4 pairs of casters. The first two casters are fixed wheels, and the remaining 6 are swivel wheels to improve the vehicle's ability to cross grooves and enhance operational stability. The casters are 5-inch anti-static TPR rubber wheels with a wheel diameter of approximately 125mm, a single wheel load capacity of 350kg, and explosion-proof function.

[0032] Operators unload the test specimens from the transport vehicle at the central entrance, then transport them to the entrance of the 50℃ vulcanization chamber, crossing two flights of stairs to enter the chamber. After the random test specimens are produced, the casting process places them in material frames 3, then places two material frames 3 on a flatbed trolley 2. This trolley has omnidirectional movement capabilities, allowing it to move within a car trunk and on the ground. The support wheels also have braking functions, achieving symmetrical double locking on both sides. Figure 2 As mentioned above, once in place, it can be made immovable.

[0033] After the transport truck delivers the random samples to the entrance of the vulcanization room, the vulcanization team uses a transport trolley 1 to connect with the truck bed. The transport trolley 1 has a lifting function, allowing it to be adjusted in height to connect with the truck bed or the floor of the vulcanization room. Once the platform of the truck is adjusted to match the truck bed, after connecting with the truck bed, the flatbed trolley 2, along with the two material frames 3, is pulled onto the transport trolley. Then, the transport trolley 1 is pushed to the entrance of the vulcanization room, lowering its height to connect with the floor of the vulcanization room. After this is completed, the flatbed trolley 2, along with the material frames 3, is pushed into the vulcanization room floor.

[0034] The above-described embodiments are merely preferred embodiments of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution should be included within the protection scope of this utility model.

Claims

1. A safe transfer device for random test pieces in a vulcanization process, characterized in that, This includes transfer trolleys, flatbed carts, and material baskets; The transfer trolley moves within the vulcanization workshop, with a flatbed cart placed on its upper surface. The flatbed truck has a rectangular open structure with multiple pairs of support wheels at the bottom and multiple material baskets placed inside the open. The material basket is a rectangular open structure, and random test specimens are placed inside the open.

2. The safe transfer device for random test pieces in the vulcanization process according to claim 1, characterized in that, The transfer trolley includes a body, a hydraulic cylinder, and support wheels; The vehicle body includes an upper plate, a lower frame, and a support frame; the upper plate is a flat plate structure, and a flatbed cart is placed on the upper surface of the upper plate; the lower frame is a rectangular frame; the support frame connects the upper plate and the lower frame, and is connected to the output end of a hydraulic cylinder. Driven by the hydraulic cylinder, the support frame rises or falls, causing the upper plate to move. Multiple pairs of support wheels are evenly arranged on the lower surface of the lower frame. The pair of support wheels at the frontmost position are directional wheels, while the other pairs of support wheels are omnidirectional wheels.

3. The safe transfer device for random test pieces in the vulcanization process according to claim 2, characterized in that, Multiple baffles are provided on the upper surface of the upper plate. Two of the baffles are semi-enclosed structures. The size of one baffle is designed according to the outer diameter of the flatbed cart, and the front of the flatbed cart is locked inside the baffle. The other baffle covers the rear support wheel of the flatbed cart when it is placed in place. There are also multiple baffles with a cuboid structure, which are set inside the support wheel of the flatbed cart when it is placed in place. The baffles on the same side of the upper plate are arranged in a collinear manner.

4. The safe transfer device for random test pieces in the vulcanization process according to claim 2 or 3, characterized in that, All support wheels of the transfer trolley are anti-static TPR rubber wheels.

5. The safe transfer device for random test pieces in the vulcanization process according to claim 1, characterized in that, The surface of the flatbed cart that comes into contact with the material frame is covered with an anti-static mat.

6. The safe transfer device for random test pieces in the vulcanization process according to claim 1, characterized in that, The flatbed truck is equipped with multiple pairs of support wheels at its bottom, with the foremost pair being directional wheels and the two rear pairs being omnidirectional wheels.

7. The safe transfer device for random test pieces in the vulcanization process according to claim 6, characterized in that, The frontmost pair of support wheels of the flatbed truck are braked directional wheels.

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