Quick locking mechanism of anti-explosion carrier
The explosion-proof transport vehicle's quick-locking mechanism, designed with hydraulic cylinders and airbag systems, solves the problem of unstable locking, achieves multi-faceted adaptability and locking of goods, and improves movement stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIALI EXPLOSION-PROOF VEHICLE MFG (SHANDONG) CO LTD
- Filing Date
- 2025-01-06
- Publication Date
- 2026-04-17
AI Technical Summary
The locking function of existing pallet trucks is simple, which makes it risky for goods to fall during movement and cannot effectively limit taller goods.
A quick-locking mechanism for explosion-proof transport vehicles was designed. Through hydraulic cylinders and airbag systems, the clamping force is adjusted by the weight of the goods. Combined with L-shaped plates and hydraulic lifting frames, it adapts to the width and height of the goods to achieve multi-face locking.
It improves the stability of goods during movement, reduces manual locking, and adapts to the locking needs of goods of different sizes.
Smart Images

Figure CN224132661U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of explosion-proof transport vehicles, specifically to a quick-locking mechanism for explosion-proof transport vehicles. Background Technology
[0002] Pallet trucks are logistics handling equipment used to move goods. When used in a handling station, manual pallet trucks insert their forks into the pallet holes, and the hydraulic system driven by human power is used to lift and lower the palletized goods. The handling operation is completed by pulling the truck manually. It is the simplest, most efficient, and most common loading, unloading, and handling tool among pallet transport tools in handling stations.
[0003] Currently, most pallet trucks have relatively simple locking functions for goods, which cannot guarantee the stability of the goods. This leads to the risk of goods falling during movement. In addition, most locking functions cannot limit the movement of goods placed at higher heights. Therefore, we urgently need a quick locking mechanism for explosion-proof pallet trucks to solve the above problems. Utility Model Content
[0004] The purpose of this utility model is to provide a quick locking mechanism for explosion-proof transport vehicles, which solves the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a quick locking mechanism for an explosion-proof transport vehicle, comprising a transport vehicle body, wherein shelves are fixedly connected to both the front and rear sides of the left side of the transport vehicle body, and locking mechanisms are provided on the two shelves;
[0006] The locking mechanism includes rectangular slots, two of which are respectively opened on two shelves. The inner bottom walls of the two rectangular slots are fixedly connected to hydraulic cylinders. There are four hydraulic cylinders on a single shelf, with two on each of the left and right sides. An airbag is fixedly connected to the center of the inner bottom wall of the rectangular slot. An inlet / outlet valve is fixedly connected to the airbag. A support ball is provided inside the airbag and is fixedly connected to the inner wall of the airbag. A placement plate is fixedly connected to the hydraulic cylinder.
[0007] Through the above technical solution, the integrated inflator and deflateor valve can inflate and deflate the airbag. Under normal conditions, the airbag is fully inflated. The support ball inside the airbag supports the airbag and has the ability to recover. When the airbag is compressed, the support ball will also contract along with the airbag.
[0008] Preferably, the width locking assembly further includes a rectangular box, two rectangular boxes are respectively fixedly connected to the front and rear sides of the shelf, a partition is fixedly connected to the center of the rectangular box, one end of a guide tube is fixedly connected to the lower surface of the partition, and the other end of the guide tube extends inward and is fixedly connected to the airbag. A two-way valve is fixedly connected to the end of the guide tube near the airbag.
[0009] Through the above technical solution, the two-way valve of this application is equipped with pressure values at both ends. When the first airbag is compressed, the gas will push open the corresponding valve port of the two-way valve, and the gas will enter the second airbag through the guide tube, making the gas in the second airbag more full. Under normal conditions, the gas in the second airbag is less than the gas in the first airbag. When the first airbag is no longer compressed, the gas in the second airbag will flow back to the first airbag through the two-way valve.
[0010] Preferably, an airbag two is fixedly connected inside the rectangular box and located on the partition. A telescopic rod is fixedly connected to the inner wall of the airbag two on the side away from the shelf. A push-out rod is fixedly connected to the side of the airbag two near the shelf and corresponding to the position of the telescopic rod. One end of the push-out rod extends outward to the outside of the rectangular box. One end of a spring is fixedly connected to the inner wall of the rectangular box and located outside the push-out rod. The other end of the spring is fixedly connected to the push-out rod. The movable end of the telescopic rod is fixedly connected to the inner wall of the airbag two and is located at the center of the push-out rod for supporting the push-out rod.
[0011] Through the above technical solution, the telescopic rod of this application supports the second airbag. When the second airbag inflates, the movable end of the telescopic rod will move with the second airbag. The three sides of the second airbag are tightly fitted with the inner wall of the rectangular box and the partition, respectively. Therefore, only one side of the second airbag inflates outward. This side is the movable side and also the connecting surface of the movable end of the telescopic rod.
[0012] Preferably, a limiting plate is fixedly connected to the outside of the rectangular box and located on the push-out rod. Linear guide rails are fixedly connected to both the left and right sides of the rectangular box near the shelf. A driving block is slidably connected to the linear guide rail, and an L-shaped plate is fixedly connected to the driving block.
[0013] Through the above technical solution, the ejection condition of the ejection rod in this application is that the gas inside the second airbag gradually fills up, the telescopic rod expands outward with the second airbag, and drives the ejection rod to move outward. The spring acts to limit the position of the ejection rod, thereby keeping the ejection rod in a straight line and avoiding tilting.
[0014] Preferably, a hydraulic lifting frame is fixedly connected to the L-shaped plate, and a limit plate is fixedly connected to the hydraulic lifting frame.
[0015] Through the above technical solution, the hydraulic lifting frame of this application is supported and extended by a hydraulic cylinder, and the lifting height of the hydraulic lifting frame is adapted to the position of placing higher goods.
[0016] Preferably, an integrated inlet / outlet valve two is fixedly connected to the rectangular box, and the integrated inlet / outlet valve two is fixedly connected to the airbag two.
[0017] Through the above technical solution, the integrated inflator and deflateor valve II is used to inflate and deflate the airbag II.
[0018] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:
[0019] This explosion-proof transport vehicle features a quick-locking mechanism. Through its design, the clamping force is continuously adjusted based on the weight of the goods. It locks the goods simultaneously with their placement, reducing the need for manual locking. An L-shaped plate is added to adapt to and lock the width of the goods, while a hydraulic lifting frame on the L-shaped plate adapts to and locks the height of the goods. This multi-faceted locking system improves the stability of the goods during movement. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a top view of the structure of this utility model;
[0022] Figure 3 This utility model Figure 2 Schematic diagram of the AA section structure;
[0023] Figure 4 This utility model Figure 2 Schematic diagram of the cross-sectional structure of the middle CC section;
[0024] Figure 5 This is a schematic diagram of the left-side structure of this utility model;
[0025] Figure 6 This utility model Figure 5 Schematic diagram of the cross-sectional structure of the middle BB.
[0026] In the diagram: 1. Handling vehicle body; 2. Shelf; 3. Locking mechanism; 5. Rectangular slot; 6. Hydraulic cylinder; 7. Infeed / outfeed integrated valve 1; 8. Support ball; 9. Airbag 1; 10. Placement plate;
[0027] 41. Rectangular box; 42. Partition plate; 43. Guide tube; 44. Two-way valve; 45. Airbag II; 46. Telescopic rod; 47. Push-out rod; 48. Spring; 49. Linear guide rail; 410. Drive block; 411. L-shaped plate; 412. Hydraulic lifting frame; 413. Limiting plate II; 414. Inlet and outlet integrated valve II; 415. Limiting plate I. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Please see Figure 1-6 This utility model provides a technical solution: a quick locking mechanism for an explosion-proof transport vehicle, including a transport vehicle body 1, with shelves 2 fixedly connected to the front and rear sides of the left side of the transport vehicle body 1, and locking mechanisms 3 provided on the two shelves 2;
[0030] The locking mechanism 3 includes a rectangular groove 5. Two rectangular grooves 5 are respectively opened on two shelves 2. The inner bottom wall of each of the two rectangular grooves 5 is fixedly connected to a hydraulic cylinder 6. There are four hydraulic cylinders 6 on each shelf 2, with two on the left and two on the right. An airbag 9 is fixedly connected to the center of the inner bottom wall of the rectangular groove 5. An integrated inlet and outlet valve 7 is fixedly connected to the airbag 9. A support ball 8 is set inside the airbag 9. The support ball 8 is fixedly connected to the inner wall of the airbag 9. A placement plate 10 is fixedly connected to the hydraulic cylinder 6.
[0031] The integrated inflator-deflation valve 7 can inflate and deflate the airbag 9. Under normal conditions, the airbag 9 is in a fully inflated state. The support ball 8 inside the airbag 9 is used to support the airbag 9 and has the ability to recover. When the airbag 9 is compressed, the support ball 8 will also contract along with the airbag.
[0032] The width locking assembly 4 also includes a rectangular box 41. Two rectangular boxes 41 are fixedly connected to the front and rear sides of the shelf 2 respectively. A partition 42 is fixedly connected to the center of the rectangular box 41. One end of a guide tube 43 is fixedly connected to the lower surface of the partition 42, and the other end of the guide tube 43 extends inward and is fixedly connected to the airbag 9. A two-way valve 44 is fixedly connected to the end of the guide tube 43 near the airbag 9.
[0033] Both ends of the bidirectional valve 44 in this application are equipped with pressure values. When the first airbag 9 is compressed, the gas will open the corresponding valve port of the bidirectional valve 44, and the gas will enter the second airbag 45 through the guide tube 43, making the gas in the second airbag 45 more abundant. Under normal conditions, the gas in the second airbag 45 is less than the gas in the first airbag 9. When the first airbag 9 is no longer compressed, the gas in the second airbag 45 will flow back to the first airbag 9 through the bidirectional valve 44.
[0034] An airbag 45 is fixedly connected inside the rectangular box 41 and on the partition 42. A telescopic rod 46 is fixedly connected to the inner wall of the airbag 45 on the side away from the shelf 2. A push-out rod 47 is fixedly connected to the side of the airbag 45 near the shelf 2 and at the position corresponding to the telescopic rod 46. One end of the push-out rod 47 extends outward to the outside of the rectangular box 41. One end of a spring 48 is fixedly connected to the inner wall of the rectangular box 41 and on the outside of the push-out rod 47. The other end of the spring 48 is fixedly connected to the push-out rod 47. The movable end of the telescopic rod 46 is fixedly connected to the inner wall of the airbag 45, and the movable end of the telescopic rod 46 is located at the center of the push-out rod 47 to support the push-out rod 47.
[0035] The telescopic rod 46 of this application supports the second airbag 45. When the second airbag 45 inflates, the movable end of the telescopic rod 46 will move with the second airbag 45. The three sides of the second airbag 45 are tightly fitted to the inner walls of the rectangular box 41 and the partition 42, respectively. Therefore, the second airbag 45 only has one side that inflates outward. This side is the movable side and also the connecting surface of the movable end of the telescopic rod 46.
[0036] A limiting plate 415 is fixedly connected to the outside of the rectangular box 41 and to the push-out rod 47. Linear guide rails 49 are fixedly connected to both the left and right sides of the rectangular box 41 and the side closest to the shelf 2. A drive block 410 is slidably connected to the linear guide rail 49. An L-shaped plate 411 is fixedly connected to the drive block 410.
[0037] The ejection condition of the ejection rod 47 in this application is that the gas inside the second airbag 45 gradually fills the airbag, the telescopic rod 46 expands outward with the second airbag 45, and drives the ejection rod 47 to move outward. The spring 48 acts to limit the position of the ejection rod 47, thereby keeping the ejection rod 47 in a straight line and avoiding tilting.
[0038] A hydraulic lifting frame 412 is fixedly connected to the L-shaped plate 411, and a limit plate 413 is fixedly connected to the hydraulic lifting frame 412.
[0039] The hydraulic lifting frame 412 of this application is supported and extended by a hydraulic cylinder, and the lifting height of the hydraulic lifting frame 412 is adapted to the position of placing higher goods.
[0040] A second integrated inlet and outlet valve 414 is fixedly connected to the rectangular box 41, and the second integrated inlet and outlet valve 414 is fixedly connected to the second airbag 45.
[0041] The inflator valve 414 is used to inflate and deflate the airbag 45.
[0042] When the explosion-proof transport vehicle's quick-locking mechanism is in operation, the operator places the goods on the placement plate 10. At this time, both airbag 9 and airbag 45 contain gas. After the goods are placed on the placement plate 10, the weight of the goods will cause the hydraulic cylinder 6 to press downwards. When the placement plate 10 moves downwards, it will press airbag 9 located in the rectangular groove 5. When airbag 9 is compressed, the gas in airbag 9 will enter airbag 45 through the two-way valve 44, slowly inflating airbag 45. When inflated, the movable end of the telescopic rod 46 inside the second airbag 45 will extend. Since the second airbag 45 only moves a single side when inflated, this side is the connecting surface of the movable end of the telescopic rod 46. When the telescopic rod 46 moves outward, it will push out the push rod 47, thereby bringing the first limiting plate 415 into contact with the surface of the goods. The drive block 410 on the linear guide rail 49 drives the L-shaped plate 411 to approach and contact the surface of the goods. After contact, the hydraulic lifting frame 412 will be lifted upward, and the second limiting plate 413 will be used to limit the goods at a higher position.
[0043] 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 process, method, article, or apparatus.
[0044] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A quick locking mechanism of an explosion-proof truck, comprising a truck body (1), characterized in that: The front and rear sides of the left side of the transport vehicle body (1) are fixedly connected to the racks (2), and the two racks (2) are equipped with locking mechanisms (3). The locking mechanism (3) includes a rectangular groove (5), two rectangular grooves (5) are respectively opened on two shelves (2), and a hydraulic cylinder (6) is fixedly connected to the inner bottom wall of each of the two rectangular grooves (5). The number of hydraulic cylinders (6) located on a single shelf (2) is four, with two on the left and right sides respectively. An airbag (9) is fixedly connected to the center of the inner bottom wall of the rectangular groove (5). An integrated inlet and outlet valve (7) is fixedly connected to the airbag (9). A support ball (8) is provided inside the airbag (9). The support ball (8) is fixedly connected to the inner wall of the airbag (9). A placement plate (10) is fixedly connected to the hydraulic cylinder (6).
2. The quick locking mechanism of the explosion-proof truck according to claim 1, characterized in that: The width locking assembly (4) also includes a rectangular box (41). The two rectangular boxes (41) are respectively fixedly connected to the front and rear sides of the shelf (2). A partition (42) is fixedly connected to the center of the rectangular box (41). One end of a guide tube (43) is fixedly connected to the lower surface of the partition (42), and the other end of the guide tube (43) extends inward and is fixedly connected to the airbag (9). A two-way valve (44) is fixedly connected to the end of the guide tube (43) near the airbag (9).
3. The quick locking mechanism of the explosion-proof truck according to claim 2, characterized in that: An airbag (45) is fixedly connected inside the rectangular box (41) and on the partition (42). A telescopic rod (46) is fixedly connected to the inner wall of the airbag (45) on the side away from the shelf (2). A push-out rod (47) is fixedly connected to the airbag (45) on the side closer to the shelf (2) and corresponding to the position of the telescopic rod (46). One end of the push-out rod (47) extends outward to the outside of the rectangular box (41). One end of a spring (48) is fixedly connected to the inner wall of the rectangular box (41) and outside the push-out rod (47). The other end of the spring (48) is fixedly connected to the push-out rod (47). The movable end of the telescopic rod (46) is fixedly connected to the inner wall of the airbag (45). The movable end of the telescopic rod (46) is located at the center of the push-out rod (47) to support the push-out rod (47).
4. The quick locking mechanism of the explosion-proof truck according to claim 3, characterized in that: A limiting plate (415) is fixedly connected to the outside of the rectangular box (41) and on the push-out rod (47). Linear guide rails (49) are fixedly connected to both the left and right sides of the rectangular box (41) and the side closest to the shelf (2). A drive block (410) is slidably connected to the linear guide rail (49). An L-shaped plate (411) is fixedly connected to the drive block (410).
5. The quick locking mechanism of the explosion-proof truck according to claim 4, characterized in that: A hydraulic lifting frame (412) is fixedly connected to the L-shaped plate (411), and a limit plate (413) is fixedly connected to the hydraulic lifting frame (412).
6. The explosion-proof transport vehicle quick-locking mechanism according to claim 5, characterized in that: The rectangular box (41) is fixedly connected to an integrated inlet and outlet valve (414), and the integrated inlet and outlet valve (414) is fixedly connected to the airbag (45).