A retractable curtain device for a three-sided dolly

Abstract

The utility model relates to the technical field of telescopic curtain, and disclose a kind of telescopic curtain device for three-sided trolley, including shell, hook structure, the fixed mounting of one end of the shell has three connecting plates, this telescopic curtain device for three-sided trolley, by pulling restriction rod to outside, so that bearing drives torsion spring to put out protective curtain from aperture, then staff moves restriction rod to the side of hook structure, then in loosening the pulling force exerted to restriction rod, when the pressure received by restriction is cancelled, the torsion spring in shell will drive restriction rod to reset, so restriction rod will move towards two hook structures, because the left side of hook structure is installed with inclined plate, so inclined plate will limit restriction rod, so that it cannot reset to block material, so it is better to prevent the situation that three-sided trolley (no front door) transports material when ground is uneven or other factors cause goods overflow.

Description

Technical Field

[0001] This utility model relates to the field of telescopic curtain technology, specifically a telescopic curtain device for a three-sided trolley. Background Technology

[0002] A three-sided trolley is a vehicle used for moving and handling goods inside a warehouse or logistics center. Three-sided trolleys typically have only two sides, which makes it easy for workers to load or unload materials from them.

[0003] Three-sided trolleys (without a front door) generally cannot restrict the transport of goods inside. Therefore, when transporting materials, uneven ground or other factors may cause the goods to spill out. In addition, the traditional protective structure of three-sided trolleys is also relatively troublesome to install and dismantle at any time. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a telescopic curtain device for a three-sided trolley, which solves the problem mentioned in the background art that three-sided trolleys (without a front door) generally cannot restrict the goods inside during transport. Therefore, when transporting materials, goods may overflow due to uneven ground or other factors. At the same time, traditional three-sided trolley protective structures are also relatively troublesome to install and are not convenient to install and disassemble at any time.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a telescopic curtain device for a three-sided trolley, comprising a housing and a hook structure. Three connecting plates are fixedly installed at one end of the housing, and the three connecting plates are arranged in a linear array at one end of the housing. Each of the three connecting plates has a first mounting hole. A top cover is provided at the top of the housing. A notch is provided on one side end face of the housing. A torsion spring is provided inside the housing. Two bearings are provided inside the housing. A protective curtain is provided on the torsion spring. A limiting rod is provided at the end of the protective curtain. A pull groove is provided at the end of the protective curtain.

[0006] Using the above technical solution, the protective curtain is released from the opening by pulling the limiting rod outward, causing the bearing to drive the torsion spring. Then, the worker moves the limiting rod to one side of the hook structure and releases the pulling force applied to the limiting rod. When the pressure on the limiting rod is removed, the torsion spring in the housing will drive the limiting rod to reset. Therefore, the limiting rod will move into the two hook structures. Since there is an inclined plate installed on the left side of the hook structure, the inclined plate will restrict the limiting rod, thus preventing it from resetting and blocking the material. Therefore, it can effectively prevent the overflow of goods due to uneven ground or other factors when transporting materials on a three-sided trolley (without a front door).

[0007] Preferably, a mounting plate is fixedly installed at the rear end of the hook structure, and a second mounting hole is provided on the mounting plate. A limiting plate is fixedly installed at the front end of the hook structure, and an inclined plate is fixedly installed on the left end face of the limiting plate.

[0008] By adopting the above technical solution, the mounting plate installed at the rear end of the fixed hook structure facilitates the installation of the hook structure. Furthermore, there are two hook structures, both of which are arranged opposite each other, thus effectively limiting the upper and lower ends of the limiting rod.

[0009] Preferably, there are two hook structures, which are arranged opposite each other, and the inclined plates of both hook structures are located on their left side.

[0010] By adopting the above technical solution, an inclined plate is installed on the left side of the hook structure. Therefore, the inclined plate restricts the limiting rod, preventing it from resetting, thereby allowing the protective curtain to be extended.

[0011] Preferably, the first and second mounting holes can be used for installation with round-head square-neck bolts and self-locking nuts.

[0012] By adopting the above technical solution, the mounting plates installed at the rear end of the hook structure are all installed on the three-sided trolley, and the position of the hook structure is slightly higher than the limiting rod. After the position of the hook structure is adjusted, the workers insert the bolts into the second mounting hole, so that the hook structure can be installed. Therefore, the installation is relatively simple.

[0013] Preferably, the tension of the protective curtain can be adjusted by a torsion spring.

[0014] By adopting the above technical solution, the tension of the protective curtain is adjusted by using a torsion spring, which allows the staff to easily pull the protective curtain out of the shell.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This three-sided trolley uses a telescopic curtain device. By pulling the limiting rod outward, the bearing drives the torsion spring to release the protective curtain from the opening. Then, the operator moves the limiting rod to one side of the hook structure and releases the pulling force applied to the limiting rod. When the pressure on the limiting rod is released, the torsion spring in the housing will drive the limiting rod to reset. Therefore, the limiting rod will move into the two hook structures. Since there is an inclined plate installed on the left side of the hook structure, the inclined plate will restrict the limiting rod, thus preventing it from resetting and thus blocking the material. Therefore, it effectively prevents the spillage of goods due to uneven ground or other factors when transporting materials on a three-sided trolley (without a front door).

[0017] 2. The telescopic curtain device for this three-sided trolley is installed by connecting the connecting plate at one end of the housing to the three-sided trolley, and then inserting the neck bolts into the first mounting holes to firmly install the housing onto the three-sided trolley. Then, the mounting plates at the rear end of the hook structure are installed onto the three-sided trolley, with the position of the hook structure slightly higher than the limit bar. After the position of the hook structure is adjusted, the worker inserts the bolts into the second mounting holes to install the hook structure. Therefore, the installation is relatively simple, and it is easy to disassemble and store when the protective curtain is not needed. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the telescopic curtain device for a three-sided vehicle according to this utility model;

[0019] Figure 2 This is a front view structural diagram of the three-sided retractable curtain device for a trolley according to this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the housing of this utility model;

[0021] Figure 4 This is a schematic diagram of the hook structure and related structures of this utility model.

[0022] In the diagram: 1. Shell; 2. Connecting plate; 3. First mounting hole; 4. Top cover; 5. Notch; 6. Torsion spring; 7. Bearing; 8. Protective curtain; 9. Limiting rod; 10. Pull groove; 11. Hook structure; 12. Mounting plate; 13. Second mounting hole; 14. Limiting plate; 15. Inclined plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0024] Example 1:

[0025] Referring to Figures 1-4, a telescopic curtain device for a three-sided trolley is described. The top of the housing 1 has a top cover 4. A notch 5 is formed on one side of the housing 1. A torsion spring 6 is installed inside the housing 1. Two bearings 7 are installed inside the housing 1. A protective curtain 8 is mounted on the torsion spring 6. A limiting rod 9 is located at the end of the protective curtain 8. A pull groove 10 is formed at the end of the protective curtain 8. A limiting plate 14 is fixedly installed at the front end of the hook structure 11. A slant plate 15 is fixedly installed on the left side of the limiting plate 14. There are two hook structures 11, which are arranged opposite each other. The slant plates 15 of both hook structures 11 are located on their left sides. The tension of the protective curtain 8 can be adjusted by the torsion spring 6.

[0026] Working principle: After the housing 1 and hook structure 11 are installed, the operator can adjust the tension of the protective curtain 8 using the torsion spring 6. The operator then places their hand on the limiting rod 9 and pulls it outwards, causing the bearing 7 to drive the torsion spring 6 to release the protective curtain 8 through the opening 5. The groove 10 on the protective curtain 8 allows the operator to easily place their hand inside to pull the limiting rod 9. After the protective curtain 8 is pulled out, the operator moves the limiting rod 9 to one side of the hook structure 11 and then releases the tension applied to the limiting rod 9. When the pressure on the limiting rod is released, the torsion spring 6 inside the housing 1 will... When the limiting rod 9 is reset, it moves into the two hook structures 11. Since the left side of the hook structure 11 is equipped with an inclined plate 15, the inclined plate 15 restricts the limiting rod 9, preventing it from resetting. This allows the protective curtain 8 to be extended, which can better prevent the cargo from overflowing due to uneven ground or other factors when transporting materials on a three-sided trolley without a front door. When the protective curtain 8 needs to be retracted into the housing 1, the operator pulls the limiting rod 9 to move both ends of the limiting rod 9 out of the hook structure 11. Then, under the action of the torsion spring 6, the protective curtain 8 will be reset and retracted into the housing 1.

[0027] Example 2:

[0028] Referring to Figures 1-4, a telescopic curtain device for a three-sided trolley is described. Three connecting plates 2 are fixedly installed at one end of the housing 1. The three connecting plates 2 are arranged in a linear array at one end of the housing 1. Each of the three connecting plates 2 has a first mounting hole 3. A mounting plate 12 is fixedly installed at the rear end of the hook structure 11. The mounting plate 12 has a second mounting hole 13. The first mounting hole 3 and the second mounting hole 13 can be used for installation by using round-head square-neck bolts and self-locking nuts.

[0029] Working principle: The connecting plate 2 installed at one end of the housing 1 is connected to the three-sided trolley. Then, the neck bolt is inserted into the first mounting hole 3 to firmly install the housing 1 onto the three-sided trolley. Then, the mounting plate 12 installed at the rear end of the hook structure 11 is installed onto the three-sided trolley, and the position of the hook structure 11 is slightly higher than the limiting rod 9. After the position of the hook structure 11 is adjusted, the bolt is inserted into the second mounting hole 13 to install the hook structure 11. Therefore, the installation is relatively simple. When the protective curtain 8 is not needed, it can be easily disassembled and stored.

[0030] 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 telescopic curtain device for a three-sided trolley, comprising a housing (1) and a hook structure (11), characterized in that: Three connecting plates (2) are fixedly installed at one end of the housing (1). The three connecting plates (2) are arranged in a linear array at one end of the housing (1). Each of the three connecting plates (2) has a first mounting hole (3). A top cover (4) is provided at the top of the housing (1). A notch (5) is provided on one side end face of the housing (1). A torsion spring (6) is provided inside the housing (1). Two bearings (7) are provided inside the housing (1). A protective curtain (8) is provided on the torsion spring (6). A limiting rod (9) is provided at the end of the protective curtain (8). A groove (10) is provided at the end of the protective curtain (8).

2. The telescopic curtain device for a three-sided trolley according to claim 1, characterized in that: A mounting plate (12) is fixedly installed at the rear end of the hook structure (11), and a second mounting hole (13) is opened on the mounting plate (12). A limiting plate (14) is fixedly installed at the front end of the hook structure (11), and a slant plate (15) is fixedly installed on the left end face of the limiting plate (14).

3. The telescopic curtain device for a three-sided trolley according to claim 1, characterized in that: The number of hook structures (11) is two, and the two hook structures (11) are arranged opposite each other, with the inclined plates (15) of the two hook structures (11) located on their left side.

4. The telescopic curtain device for a three-sided trolley according to claim 1, characterized in that: The first mounting hole (3) and the second mounting hole (13) can be installed using round-head square-neck bolts and self-locking nuts.

5. A telescopic curtain device for a three-sided trolley according to claim 1, characterized in that: The tension of the protective curtain (8) can be adjusted by the torsion spring (6).

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