A sliding cover device for chemical tank trucks

Abstract

This utility model relates to a sliding cover device for a chemical tanker truck, comprising a first sliding cover and a second sliding cover that are slidably connected to each other on the chemical tanker truck. The first sliding cover has a locking rod assembly at its end for locking with the end of the second sliding cover. The locking rod assembly includes a lock box embedded in the first sliding cover. Two locking rods are symmetrically arranged inside the lock box, both slidingly connected and hinged to connecting rods at their opposite ends. The other ends of the two connecting rods are respectively hinged to the two ends of a rotating rod. The center of the rotating rod is rotatably connected to the lock box via a rotating shaft. Several guide plates are fixed inside the lock box, through which the locking rods pass. A spring is fitted on each locking rod near its outer end. One end of the spring abuts against the guide plate, and the other end abuts against a control lever vertically mounted on the locking rod. The second sliding cover has locking holes at both ends for the two locking rods to be inserted and locked. This chemical tanker truck sliding cover device has a simple structure, is more convenient to operate, and saves physical effort.

Description

Technical Field

[0001] This utility model relates to a sliding cover device for chemical tank trucks. Background Technology

[0002] In the transportation of hazardous materials such as chemical liquids, tank trucks are a core mode of transport. These tank trucks typically have a sealed top cover (or manhole cover) that covers and protects critical loading and unloading valves, pipeline interfaces, and any possible loading and unloading hoses. Before loading or unloading operations, operators must first open this top cover to access the internal equipment.

[0003] However, the design and opening method of the tank truck top cover in the existing technology have significant shortcomings and operational bottlenecks:

[0004] 1. Difficult and inconvenient operation: The currently commonly used cover structure often requires operators to exert considerable physical strength to open. The cover itself may have a certain weight, and the sealing structure may stick together after long-term use or need to overcome initial static friction, all of which make the opening action difficult and the operation inconvenient.

[0005] 2. Height Limitations Lead to Operational Difficulties: A more critical technical drawback lies in the height required for opening the cover. Sufficient vertical space is needed above the cover to fully open it to the working position. However, the space above the tanker truck is inherently limited by vehicle design (e.g., height restrictions of surrounding guardrails), and in actual work sites (e.g., loading platforms, warehouses, or specific workstations), there may be physical obstacles above the operators (e.g., ceilings, pipes, other equipment, or low structures). When the effective overhead space is insufficient to accommodate the range of motion required to fully open the cover, it cannot be opened smoothly to the necessary angle or position. This makes it difficult or impossible for operators to open the cover even with effort, severely hindering normal loading and unloading operations.

[0006] 3. Safety: Existing tank truck top covers are generally equipped with locking structures on both sides. When opening, the staff needs to unlock both sides separately, which may involve the action of overturning the tank truck. This action poses a great safety hazard during chemical filling operations.

[0007] These technical defects not only reduce the efficiency of loading and unloading operations and increase the labor intensity of operators, but may also cause delays or even interruptions in certain space-constrained working environments. An improved design solution is urgently needed to solve these problems. Utility Model Content

[0008] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is to provide a chemical tanker sliding cover device that is not only reasonably structured, but also convenient and efficient.

[0009] To solve the above-mentioned technical problems, the technical solution of this utility model is: a chemical tanker sliding cover device, including a first sliding cover and a second sliding cover that are arranged opposite to each other and slidably connected to the chemical tanker. The first sliding cover has a locking rod assembly at its end for locking with the end of the second sliding cover. The locking rod assembly includes a lock box embedded in the first sliding cover. Two locking rods are symmetrically arranged in the lock box. The two locking rods are slidably connected in the lock box and have connecting rods hinged at their opposite ends. The other ends of the two connecting rods are respectively hinged to the two ends of a rotating rod. The center of the rotating rod is rotatably connected to the lock box via a rotating shaft. Several guide plates are fixed in the lock box for guidance through which the locking rods pass. A spring is sleeved on each locking rod near its outer end. One end of the spring abuts against the guide plate, and the other end abuts against an operating rod vertically arranged on the locking rod. The second sliding cover has lock holes at both ends for the two locking rods to be inserted and locked.

[0010] Furthermore, a sleeve is fixed to the end of the control lever, and it is coaxially rotatably connected to the lock rod via the sleeve. The lock box has a slot for the control lever to slide and flip into place.

[0011] Furthermore, a lock cover is fixed to the top of the lock box, and the slot is L-shaped and opened on the lock cover.

[0012] Furthermore, the second sliding cover has symmetrical protruding plates at both ends, and the lock hole is opened on the protruding plate.

[0013] Furthermore, the first sliding cover and the second sliding cover are both fixed with baffles on all sides except the facing sides, and the inner sides of the two symmetrical baffles are both fixed with slide rails and slide in conjunction with the slide grooves on the chemical tanker.

[0014] Furthermore, handles are fixedly provided on each of the flanges.

[0015] Compared with the prior art, the present invention has the following advantages: the chemical tanker sliding cover device changes the traditional flip-top method, and the single-sided linkage locking structure design makes operation more convenient and saves physical strength. It is safe and convenient, occupies less space, has a simple overall structure, improves the efficiency of loading and unloading operations, and reduces the labor intensity of operators.

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2This is a side view of an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional view of AA in an embodiment of this utility model;

[0020] Figure 4 for Figure 3 Enlarged diagram of C in the middle;

[0021] Figure 5 for Figure 2 An enlarged diagram of B in the diagram;

[0022] Figure 6 This is a top view of the lock box in an embodiment of the present utility model;

[0023] Figure 7 for Figure 6 Side view;

[0024] Figure 8 This is a schematic diagram of the card slot structure in an embodiment of this utility model.

[0025] In the diagram: 1-First sliding cover, 2-Second sliding cover, 3-Locking rod assembly, 4-Locking box, 5-Locking rod, 6-Connecting rod, 7-Rotating shaft, 8-Guide plate, 9-Spring, 10-Operating lever, 11-Locking hole, 12-Sleeve, 13-Slot, 14-Protruding plate, 15-Side guard, 16-Slide rail, 17-Slide groove, 18-Handle, 19-Rotating rod, 20-Locking cover. Detailed Implementation

[0026] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0027] like Figures 1-8 As shown, a chemical tanker sliding cover device includes a first sliding cover 1 and a second sliding cover 2, which are oppositely arranged and slidably connected to the chemical tanker. A locking rod assembly 3 is provided at the end of the first sliding cover for locking with the end of the second sliding cover. The locking rod assembly includes a lock box 4 embedded in the first sliding cover. The lock box is hollow, and two locking rods symmetrically arranged inside the lock box are both horizontally extending along the length of the lock box. Both locking rods are slidably connected inside the lock box, and connecting rods 6 are hinged to their opposite ends. The other ends of the two connecting rods are respectively hinged to the two ends of a rotating rod 19. The two connecting rods and the rotating rod form a "Z" shape. The center of the rotating rod is rotatably connected to the lock box via a rotating shaft 7. The lock box is fixed with several guide plates 8 through which the lock rods pass to guide it. The guide plates limit and guide it so that it can only move along the length of the lock box. A spring 9 is fitted on the lock rod near the outer end of the lock box. One end of the spring is abutted on the guide plate near the outer end of the lock box, and the other end is abutted on the operating rod 10 vertically set on the lock rod. Both ends of the second sliding cover are provided with lock holes 11 for the two lock rods to be inserted and locked.

[0028] In this embodiment of the utility model, a sleeve 12 is fixedly provided at the end of the control lever and is coaxially rotatably connected to the lock rod via the sleeve. The lock box is provided with a slot 13 for the control lever to slide and flip into the slot.

[0029] In this embodiment of the utility model, a lock cover is fixedly provided on the top of the lock box, and the slot is L-shaped and opened on the lock cover. The vertical section of the L-shaped slot is located on the top of the lock cover, and the horizontal section is located on the side of the lock cover. Both are connected to facilitate the sliding and flipping of the control lever.

[0030] In this embodiment of the utility model, the second sliding cover has symmetrical protrusions of convex plates 14 at both ends, and the lock hole is formed on the convex plates.

[0031] In this embodiment of the utility model, the first sliding cover and the second sliding cover are both fixed with baffles 15 except for the opposite sides, and the inner sides of the two symmetrical baffles are both fixed with slide rails 16 and slide in conjunction with the slide grooves 17 on the chemical tanker.

[0032] In this embodiment of the utility model, handles 18 are fixedly provided on each of the flanges.

[0033] The working principle of this utility model embodiment is as follows: When the first cover plate and the second cover plate are closed together, the operator only needs to rotate the control lever on one side to disengage it from the vertical section of the slot and enter the horizontal section. Under the tension of the spring, the locking rod is pushed outward to insert the locking rod into the lock hole and complete the locking. At the same time, the locking rod on this side drives the connecting rod to rotate. Since the locking rod can only move in a straight line, it drives the rotating rod to swing, thereby driving the other locking rod to move in the opposite direction and completing the locking on the other side. At this time, the first cover plate and the second cover plate are locked together. Conversely, by pushing the control lever inward to push the locking rod out of the lock hole, the spring is compressed. At this time, rotating the control lever makes it engage in the vertical section of the slot to complete the retraction of the locking rod. The locking rod on the other side moves in the opposite direction to the locking rod to complete the unlocking. The control lever on the other side does not need to engage in the vertical section of the slot, and then the cover plate can be opened.

[0034] This utility model is not limited to the preferred embodiment described above. Anyone can derive other various forms of chemical tanker sliding cover devices based on the teachings of this utility model. All equivalent variations and modifications made within the scope of the claims of this utility model should be considered within the scope of this utility model.

Claims

1. A chemical tank truck sliding cover device, characterized by: The device includes a first sliding cover and a second sliding cover, which are slidably connected to each other on a chemical tanker. The first sliding cover has a locking rod assembly at its end for locking with the end of the second sliding cover. The locking rod assembly includes a lock box embedded in the first sliding cover. Two locking rods are symmetrically arranged in the lock box. The two locking rods are slidably connected in the lock box and have connecting rods hinged to their opposite ends. The other ends of the two connecting rods are respectively hinged to the two ends of a rotating rod. The center of the rotating rod is rotatably connected to the lock box via a rotating shaft. Several guide plates are fixed in the lock box for guiding the locking rods. A spring is sleeved on each locking rod near its outer end. One end of the spring abuts against the guide plate, and the other end abuts against an operating rod vertically arranged on the locking rod. The second sliding cover has lock holes at both ends for the two locking rods to be inserted and locked.

2. The chemical tanker sliding cover device according to claim 1, characterized in that: The end of the control lever is fixed with a sleeve and is coaxially rotatably connected to the lock rod through the sleeve. The lock box has a slot for the control lever to slide and flip into place.

3. A chemical tank vehicle sliding cover device according to claim 2, characterized in that: The top of the lock box is fixed with a lock cover, and the slot is L-shaped and opened on the lock cover.

4. A chemical tank truck sliding cover device according to claim 1, characterized in that: The second sliding cover has symmetrical protruding plates at both ends, and the lock hole is opened on the protruding plate.

5. A chemical tank car sliding cover apparatus as defined in claim 1 wherein: The first and second sliding covers are both fixed with baffles on all sides except the facing sides. The inner sides of the two symmetrical baffles are both fixed with slide rails and slide in conjunction with the slide grooves on the chemical tanker.

6. A chemical tank vehicle sliding cover device according to claim 5, characterised in that: Handles are fixedly installed on each of the guard edges.

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