Top guardrail device

Abstract

The utility model discloses a top guardrail device which comprises a tank body, a crawling ladder, a top movable guardrail and a top protection device, and the top protection device is composed of a protection plate, a vertical rod, a hinge, a torsion spring, a rotating shaft, a supporting lug, an air cylinder, an air cylinder fixing lug, a limiting strip, a limiting block and the like. The air cylinder of the top protection device and the air cylinder of the top movable guardrail share an air path, so that the top protection device and the top movable guardrail can be synchronously lifted in a linkage mode. The safety protection device is reasonable in structural design, the top movable guardrail and the top protection device rise synchronously to protect a worker, the worker exerts acting force to enable the two protection plates to be rotationally opened in the direction away from the crawling ladder, the protection plates are opened in a one-way mode and can be automatically reset and closed, operators are prevented from falling off from the crawling ladder, and the safety protection device is safe and reliable. The top protection device and the top movable guardrail form four-side protection on the top of the tank car, and safety is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tank truck guardrails, in particular to a top guardrail device. Background Art

[0002] The top of the tank truck is usually equipped with one or more manholes for workers to enter and exit, which are used for loading and unloading oil and cleaning and repairing the inside of the tank. The top movable guardrails installed on existing liquid tank trucks and powder tank trucks fail to achieve the function of protecting the personal safety of operators by providing guardrails in all four directions. The reason is that the operator needs to climb up to the top of the vehicle from a ladder, so the top guardrail must have a gap for the operator to pass through (see attached Figure 1 , there are guardrails on three sides of the top guardrail, and no guardrail on the ladder side).

[0003] Therefore, it is necessary to develop a top protection device that is convenient for operators to climb to the top of the vehicle and can ensure that the top guardrail at the ladder end has no gaps to protect the operators. For this purpose, we designed a top guardrail device. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the guardrail needs to facilitate the operator to climb onto the top of the vehicle, and needs to realize that the top guardrail at the ladder end has no gap to protect the operator. A top guardrail device is proposed, wherein the top movable guardrail and the top protective device are synchronously raised to protect the staff. The staff applies a force to rotate and open the two protective plates away from the ladder. The protective plates are opened in one direction and can automatically reset and close to prevent the operator from falling from the ladder. The top protective device and the top movable guardrail form four-side protection for the top of the tank truck, which greatly improves the safety.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A top guardrail device comprises a tank body, a ladder, a top movable guardrail and a top protective device. The top protective device is composed of a protective plate, a vertical rod, a hinge, a torsion spring, a rotating shaft, a support ear, a cylinder, a cylinder fixing ear, a limit strip and a limit block. The cylinder of the top protective device and the cylinder of the top movable guardrail share a common air circuit, so that the top protective device and the top movable guardrail can be linked and raised synchronously.

[0007] Preferably, the two supporting ears are fixedly connected to the upper end of the tank body, the rotating shaft is rotatably connected between the two supporting ears, the cylinder is connected to the rotating shaft through the cylinder fixing ear to drive the rotating shaft to rotate, the two vertical rods are respectively fixedly connected to the two ends of the rotating shaft, and the two protective plates are respectively connected to the side walls of the two vertical rods through hinges and torsion springs and are arranged opposite to each other.

[0008] Preferably, the two protective plates are opened unidirectionally and open to the opposite side of the ladder.

[0009] Preferably, the torsion spring is sleeved into the rotation axis of the hinge.

[0010] Preferably, the two limit strips are arranged on opposite side walls of the two vertical rods and abut against the protective plate.

[0011] Preferably, the limit blocks are respectively arranged on the two supporting ears.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In this top guardrail device, the cylinder of the top protective device and the cylinder of the top movable guardrail share the same air circuit, so that the top protective device and the top movable guardrail can be synchronously raised and lowered, which is easy to operate and reduces safety hazards.

[0014] 2. The top guardrail device, the top movable guardrail and the top protective device are raised to protect the staff. The staff climbs to the top of the tank body through the ladder and applies force to rotate the two protective plates away from the ladder to open. The protective plates are opened in one direction, and the torsion spring cooperates with the hinge to automatically reset and close the protective plates to prevent the operator from falling from the ladder. Together with the top movable guardrail, it forms four-side protection for the top of the tank truck, greatly improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the top movable guardrail installed for existing liquid tank trucks and powder tank trucks;

[0016] Figure 2 This is a schematic diagram of the structure of a top guardrail device in a raised state proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a top guardrail device in a lowered state proposed by the utility model;

[0018] Figure 4 A schematic diagram of the structure of a top guardrail device in an open state of a protective plate thereof;

[0019] Figure 5 This is a schematic diagram of the main structure of a top protection device of a top guardrail device proposed by the utility model;

[0020] Figure 6 A rear view structural schematic diagram of a top protection device of a top guardrail device proposed by the utility model;

[0021] Figure 7 A schematic diagram of the structure of the protective plate of a top guardrail device proposed by the utility model in the open position;

[0022] Figure 8 A schematic diagram of a torsion spring of a top guardrail device proposed by the utility model;

[0023] Fig. 9 This is a schematic diagram of a torsion spring installation structure of a top guardrail device proposed by the utility model;

[0024] Fig.10 This is a schematic structural diagram of a protective plate of a top guardrail device proposed by the utility model in an open state.

[0025] In the figure: 1. tank body; 2. ladder; 3. top movable guardrail; 4. top protective device; 401. protective plate; 402. vertical rod; 403. hinge; 404. torsion spring; 405. rotating shaft; 406. support ear; 407. cylinder; 408. cylinder fixing ear; 409. limit strip; 410. limit block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Reference Figure 1-Figure 10 A top guardrail device includes a tank body 1, a ladder 2, a top movable guardrail 3 and a top protective device 4. The top movable guardrail 3 is a prior art. The top movable guardrail 3 is driven by a cylinder to rotate and rise or fall. The top protective device 4 is composed of a protective plate 401, a vertical rod 402, a hinge 403, a torsion spring 404, a rotating shaft 405, a support ear 406, a cylinder 407, a cylinder fixing ear 408, a limit bar 409 and a limit block 410. The cylinder 407 of the top protective device 4 and the cylinder of the top movable guardrail 3 share an air circuit, so that the top protective device 4 and the top movable guardrail 3 can be linked and synchronously raised or lowered (such as Figure 2 and Figure 3 As shown), when the top movable guardrail 3 is lowered, the top protective device 4 is lowered at the same time, so as to prevent the top movable guardrail 3 from being lowered while the top protective device 4 is not lowered, thereby preventing the possibility of colliding with other objects;

[0028] The two ears 406 are fixedly connected to the upper end of the tank body 1, the rotating shaft 405 is rotatably connected between the two ears 406, the cylinder 407 is connected to the rotating shaft 405 through the cylinder fixing ear 408, and drives the rotating shaft 405 to rotate, the two vertical rods 402 are respectively fixedly connected to the two ends of the rotating shaft 405, the cylinder 407 drives the rotating shaft 405 to rotate through the cylinder fixing ear 408, and then the two vertical rods 402 can be rotated, so that the top protection device 4 is raised or lowered, and the two protection plates 401 are respectively connected to the side walls of the two vertical rods 402 through the hinge 403 and the torsion spring 404 and are arranged opposite to each other, so that the two protection plates 401 can be rotated to open, and can be automatically reset and closed;

[0029] The two protection plates 401 are opened in one direction and are opened to the opposite side of the ladder 2, so that the protection plates 401 cannot be opened to the side of the ladder 2, so as to protect the operator and prevent the operator from falling from the ladder 2, and work together with the top movable guardrail 3 to form four-side protection for the top of the tank truck;

[0030] The torsion spring 404 is inserted into the rotating shaft of the hinge 403. When the protective plate 401 is opened, the hinge 403 is linked to rotate, so that the torsion spring 404 is stressed. When the external force acting on the protective plate 401 is cancelled, the torsion spring 404 is reset, and the hinge 403 is linked to rotate, so that the protective plate 401 returns to the initial closed state.

[0031] The two limit bars 409 are arranged on the side walls opposite to the two vertical rods 402 and abut against the protective plate 401, which can limit the opening direction of the protective plate 401, so that the protective plate 401 can only be opened to the side away from the ladder 2, and cannot be opened to the side of the ladder 2;

[0032] The limit blocks 410 are respectively arranged on the two support ears 406. The same support ear 406 is respectively provided with two vertical and horizontal limit blocks 410, which can limit the position of the vertical rod 402 when it is raised and lowered, so that the vertical rod 402 can be raised to a vertical state (such as Figure 5 ), can be lowered to a horizontal position (as shown Figure 3 shown).

[0033] The functional principle of the utility model can be explained through the following operation modes:

[0034] In the utility model, the top guardrail device, the cylinder 407 of the top protective device 4 and the cylinder of the top movable guardrail 3 share the air circuit, so that the top protective device 4 and the top movable guardrail 3 can be linked and synchronously raised and lowered, to prevent the top movable guardrail 3 from being lowered while the top protective device 4 is not lowered, causing the possibility of colliding with other objects. The top movable guardrail 3 and the top protective device 4 are raised to protect the staff. The staff climbs to the top of the tank body 1 through the ladder 2 and applies a force to make the two protective plates 401 move away from the ladder 2. It can be opened by rotating (i.e., opened toward the inside of the top movable guardrail 3), and the protective plate 401 is one-way opening, which can protect the operator. When the external force acting on the protective plate 401 disappears, the torsion spring 404 cooperates with the hinge 403 to make the protective plate 401 automatically reset and close, so that the operator is not hindered when going to the top of the tank body 1. After reaching the top, the protective plate 401 automatically resets and cannot be opened to the side of the ladder 2, which can prevent the operator from falling from the ladder 2, and works together with the top movable guardrail 3 to form four-side protection for the top of the tank truck.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A top guardrail device, comprising a tank body (1), a ladder (2), a top movable guardrail (3) and a top protective device (4), characterized in that: The top protection device (4) is composed of a protection plate (401), a vertical rod (402), a hinge (403), a torsion spring (404), a rotating shaft (405), a support ear (406), a cylinder (407), a cylinder fixing ear (408), a limit bar (409) and a limit block (410). The cylinder (407) of the top protection device (4) and the cylinder of the top movable guardrail (3) share a common air circuit, so that the top protection device (4) and the top movable guardrail (3) can be linked and synchronously raised.

2. A top guardrail device according to claim 1, characterized in that: The two supporting ears (406) are fixedly connected to the upper end of the tank body (1); the rotating shaft (405) is rotatably connected between the two supporting ears (406); the cylinder (407) is connected to the rotating shaft (405) via the cylinder fixing ear (408) to drive the rotating shaft (405) to rotate; the two vertical rods (402) are respectively fixedly connected to the two ends of the rotating shaft (405); and the two protective plates (401) are respectively connected to the side walls of the two vertical rods (402) via hinges (403) and torsion springs (404) and are arranged opposite to each other.

3. A top guardrail device according to claim 1, characterized in that: The two protection plates (401) are opened in one direction and are opened toward the opposite side of the ladder (2).

4. A top guardrail device according to claim 1, characterized in that: The torsion spring (404) is inserted into the rotation axis of the hinge (403).

5. A top guardrail device according to claim 1, characterized in that: The two limit bars (409) are arranged on opposite side walls of the two vertical rods (402) and abut against the protective plate (401).

6. A top guardrail device according to claim 1, characterized in that: The limit blocks (410) are respectively arranged on the two supporting ears (406).

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