Liftable excavator with emergency escape channel

Abstract

The utility model relates to the technical field of excavator safety, in particular to a liftable excavator with an emergency escape passage, which comprises a cab, a connecting rod mechanism and a platform base, the connecting rod mechanism comprises two connecting rod components arranged in bilateral symmetry, the front ends of the connecting rod components are hinged to the platform base, and the rear ends of the connecting rod components are hinged to the cab. Two oil cylinders are arranged below the two connecting rod assemblies respectively, the front ends of the oil cylinders are hinged below the front ends of the connecting rod assemblies, the rear ends of the oil cylinders are hinged to the platform base, and the connecting rod mechanism is provided with an escape channel connecting the cab and the platform base. The escape channel is arranged on the connecting rod mechanism, a driver is helped to climb down from the cab smoothly, meanwhile, the safety pin and the safety pin hole are matched to guarantee that the connecting rod mechanism is clamped when the driver escapes, the cab cannot fall off, and the safety of the driver during escape is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator safety, in particular to a liftable excavator with an emergency escape passage. Background Art

[0002] The excavator's raised cab is divided into two types: a fixed raised cab and a liftable cab. It is a product of the excavator's special scene operation and is widely used in railways, port terminals, freight yards, steel mills, new energy recycling, construction and other occasions. When the liftable cab fails after being raised and cannot fall down, the driver is trapped in the cab and needs to escape. At this time, the driver pushes open the rear window and climbs down along the lifting mechanism. Because the lifting mechanism has no handle, there is a great safety hazard, and there is a risk of the cab falling when escaping.

[0003] Therefore, this case designs a liftable excavator with safety protection and an emergency escape passage. By installing an escape passage on the lifting mechanism, an escape passage is provided for the driver. Secondly, by setting a safety pin hole, there is no risk of the cab falling when the driver escapes. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a liftable excavator with safety guarantee and an emergency escape passage. The escape passage is installed on the lifting mechanism of the excavator, thereby providing an escape passage for the driver. Secondly, a safety pin hole is provided to ensure that there is no risk of the cab falling when the driver escapes.

[0005] In order to solve the above technical problems, the utility model provides a liftable excavator with an emergency escape passage, including a cab, a connecting rod mechanism and a platform base. Its structural feature is that the connecting rod mechanism includes two connecting rod assemblies arranged symmetrically on the left and right, the front end of the connecting rod assembly is hinged to the platform base, and the rear end is hinged to the cab, two oil cylinders are respectively arranged under the two connecting rod assemblies, the front end of the oil cylinder is hinged to the lower front end of the connecting rod assembly, and the rear end is hinged to the platform base, and an escape passage connecting the cab and the platform base is arranged on the connecting rod mechanism.

[0006] After adopting the above structure, by arranging a synchronously running escape channel on the connecting rod mechanism, the escape channel can move together with the lifting mechanism, thereby providing an escape path for the driver, facilitating the driver to escape when trapped in the cab, and providing safety protection.

[0007] Preferably, the escape passage comprises a foot ladder arranged above the two connecting rod assemblies and connected to the connecting rod assemblies and two handrails arranged at the rear side of the cab. The foot ladder and handrails facilitate the driver to climb down smoothly and provide a support point.

[0008] Preferably, a safety pin hole is horizontally arranged on the left or right side of the platform base, and a safety pin matching the safety pin hole is arranged on the platform base. The safety pin is located in front of the hinge point between the connecting rod assembly and the platform base. When the cab rises to the top, the safety pin inserted into the safety pin hole is located below the connecting rod assembly and abuts against the connecting rod assembly. By using the safety pin and the safety pin hole in coordination, the connecting rod assembly can be clamped from below to prevent the cab from falling when the excavator fails.

[0009] Preferably, the foot escalator is in the shape of a ladder with a closed upper end, and the front end of the foot escalator is inclined toward one side of the connecting rod mechanism, and the rest of the foot escalator is arranged in parallel with the connecting rod mechanism, and the foot escalator is connected to the connecting rod mechanism through a connecting rod. The shape of the foot escalator is convenient for the driver to use when escaping, and secondly, the connecting rod strengthens the connection structure between the foot escalator and the connecting rod assembly.

[0010] Preferably, two first hinge seats are symmetrically arranged at the bottom of the rear side of the cab, and the two connecting rod assemblies are hinged to the two first hinge seats. The connecting rod assembly is connected to the rear end of the cab through the first hinge seats.

[0011] Preferably, the connecting rod assembly includes an upper connecting rod and a lower connecting rod arranged in parallel, the step ladder is arranged above the upper connecting rod, and the front end of the oil cylinder is hinged to the front end bottom of the lower connecting rod. The connection structure between the cab and the platform base is strengthened by the upper connecting rod and the lower connecting rod structure, and the oil cylinder provides power for the connecting rod assembly.

[0012] Preferably, the two armrests are respectively vertically arranged above the two first hinge seats. The armrests are arranged in a position that is convenient for the driver to use for escape.

[0013] Preferably, a placement plate for placing the safety pin is horizontally arranged on the left or right side of the platform base, and a placement hole is provided on the placement plate. The safety pin is placed on the placement plate, which is convenient for placing the safety pin and taking it whenever needed, and is convenient and simple.

[0014] Preferably, the rear window glass of the cab can be opened and closed, so that the driver can escape from the rear window position conveniently.

[0015] In summary, the utility model has the function of helping the driver trapped in the cab to escape. A foot ladder and a handrail are arranged on the connecting rod mechanism to provide a safe passage for the driver to escape. The cooperation between the safety pin hole and the safety pin also ensures that the cab will not fall during the driver's escape, thereby providing safety protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure when the cab of the utility model is raised to the top;

[0018] Figure 3 It is a schematic diagram of the structure of the utility model when the cab is not raised;

[0019] Figure 4 for Figure 2 A schematic diagram of the structure of the hinge point of the middle connecting rod assembly and the oil cylinder;

[0020] In the figure: 1, cab, 2, connecting rod assembly, 21, upper connecting rod, 22, lower connecting rod, 3, platform base, 4, escape passage, 41, foot ladder, 42, handrail, 5, safety pin, 6, rear window glass, 7, connecting rod, 8, first articulated seat, 9, cylinder, 10, placement plate, 11, safety pin hole. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0026] Refer to the attached Figure 1-4The utility model of a liftable excavator with an emergency escape passage comprises a cab 1, a connecting rod mechanism and a platform base 3. The connecting rod mechanism comprises two connecting rod assemblies 2 which are symmetrically arranged on the left and right. The front end of the connecting rod assembly 2 is hinged to the platform base 3, and the rear end is hinged to the cab 1. Two oil cylinders 9 are respectively arranged under the two connecting rod assemblies 2. The front end of the oil cylinder 9 is hinged to the lower front end of the connecting rod assembly 2, and the rear end is hinged to the platform base 3. The connecting rod assembly 2 is driven to move by the oil cylinder 9, so as to realize the lifting and lowering of the cab 1. An escape passage 4 connecting the cab 1 and the platform base 3 is arranged on the connecting rod mechanism. When the excavator fails, the driver can use the escape passage 4 to descend from the cab 1 to the platform base 3 to further escape from the excavator.

[0027] Refer to the attached Figure 1-4 The escape passage 4 includes a foot ladder 41 arranged above the two connecting rod assemblies 2 and connected to the connecting rod assemblies 2 and two handrails 42 arranged on the rear side of the cab 1. The driver escapes from the cab 1 to the platform base 3 by using the handrails 42 and the foot ladder 41.

[0028] Refer to the attached Figure 1-3 A safety pin hole 11 is horizontally arranged on the left or right side of the platform base 3. A safety pin 5 matching the safety pin hole 11 is arranged on the platform base 3. The safety pin 5 is located in front of the hinge point between the connecting rod assembly 2 and the platform base 3. When the cab rises to the top, the safety pin 5 inserted into the safety pin hole 11 is located below the connecting rod assembly 2 and abuts against the connecting rod assembly 2. When the excavator fails, the cab 1 is about to fall, and the safety pin 5 will jam the connecting rod assembly 2 to prevent the cab 1 from falling.

[0029] Refer to the attached Figure 1-4 The foot ladder 41 is in the shape of a ladder with a closed upper end, and the front end of the foot ladder 41 is inclined toward one side of the connecting rod mechanism, and the remaining part of the foot ladder 41 is arranged parallel to the connecting rod mechanism. The foot ladder 41 is connected to the connecting rod mechanism through a connecting rod 7, thereby strengthening the connection structure between the foot ladder 41 and the connecting rod mechanism.

[0030] Refer to the attached Figure 1-4 Two first articulated seats 8 are symmetrically arranged at the bottom of the rear side of the cab 1, and the two connecting rod assemblies 2 are hinged to the two first articulated seats 8. The connecting rod assembly 2 is pushed to move by the oil cylinder 9, and the connecting rod assembly 2 further pushes the cab 1 to rise and fall.

[0031] Refer to the attached Figure 1-4 The connecting rod assembly 2 includes an upper connecting rod 21 and a lower connecting rod 22 which are arranged in parallel up and down. The foot escalator 41 is arranged above the upper connecting rod 21. The front end of the cylinder 9 is hinged to the front end bottom of the lower connecting rod 22. The front ends of the upper connecting rod 21 and the lower connecting rod 22 are both hinged to the first hinge seat 8. The rear ends of the upper connecting rod 21 and the lower connecting rod 22 are both hinged to the platform base 3. The cylinder 9 pushes the lower connecting rod 22 to further push the cab 1 to move up and down.

[0032] Refer to the attached Figure 1-4 Two handrails 42 are respectively vertically arranged above the two first hinged seats 8, and the driver can hold the handrails 42 first when climbing down.

[0033] Refer to the attached Figure 1-3 A placement plate 10 for placing the safety pin 5 is horizontally arranged on the left or right side of the platform base 3. The placement plate 10 is provided with a placement hole, which is convenient for placing the safety pin 5 and taking it whenever needed, which is convenient and simple.

[0034] Refer to the attached Figure 1 The rear window glass 6 of the cab 1 can be opened and closed, which is convenient for the driver to open the rear window glass 6 and escape from the cab 1.

[0035] In the utility model, the working steps of the device are as follows: when the cab 1 is raised, the ground personnel pull out the safety pin 5 from the placement plate 10 and insert it into the safety pin hole 11. When the excavator fails and is about to fall suddenly, the safety pin 5 can jam the connecting rod assembly 2 to prevent the cab 1 from falling. When the excavator fails and the cab 1 cannot land, the driver opens the rear window glass 6 of the cab 1, climbs out from the rear window position, steps on the foot ladder 41, holds the handrails 42 with both hands, and then climbs down along the foot ladder 41, climbs down the lifting mechanism 2, and finally climbs down the excavator from the platform base 3. At the same time, the safety pin 5 can also ensure that the cab 1 does not fall when the driver escapes.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A liftable excavator with an emergency escape passage, comprising a cab (1), a connecting rod mechanism and a platform base (3), characterized in that The connecting rod mechanism comprises two connecting rod assemblies (2) which are symmetrically arranged on the left and right. The front end of the connecting rod assembly (2) is hinged to the platform base (3) and the rear end is hinged to the cab (1). Two oil cylinders (9) are respectively arranged below the two connecting rod assemblies (2). The front end of the oil cylinder (9) is hinged to the lower front end of the connecting rod assembly (2) and the rear end is hinged to the platform base (3). An escape passage (4) connecting the cab (1) and the platform base (3) is arranged on the connecting rod mechanism.

2. The liftable excavator with emergency escape passage according to claim 1 is characterized in that The escape passage (4) comprises a foot ladder (41) arranged above the two connecting rod assemblies (2) and connected to the connecting rod assemblies (2), and two handrails (42) arranged at the rear side of the cab (1).

3. The liftable excavator with emergency escape passage according to claim 1 is characterized in that A safety pin hole (11) is horizontally arranged on the left or right side of the platform base (3); a safety pin (5) matching the safety pin hole (11) is arranged on the platform base (3); the safety pin (5) is located in front of a hinge point between the connecting rod assembly (2) and the platform base (3); when the cab rises to the top, the safety pin (5) inserted into the safety pin hole (11) is located below the connecting rod assembly (2) and abuts against the connecting rod assembly (2).

4. The liftable excavator with emergency escape passage according to claim 2 is characterized in that The foot escalator (41) is in the shape of a ladder with a closed upper end, and the front end of the foot escalator (41) is inclined toward one side of the connecting rod mechanism, and the remaining part of the foot escalator (41) is arranged parallel to the connecting rod mechanism. The foot escalator (41) is connected to the connecting rod mechanism via a connecting rod (7).

5. The liftable excavator with emergency escape passage according to claim 2 is characterized in that Two first hinged seats (8) are symmetrically arranged at the bottom of the rear side of the cab (1), and the two connecting rod assemblies (2) are hinged to the two first hinged seats (8).

6. The liftable excavator with emergency escape passage according to claim 5, characterized in that The connecting rod assembly (2) comprises an upper connecting rod (21) and a lower connecting rod (22) which are arranged in parallel up and down, the escalator (41) is arranged above the upper connecting rod (21), and the front end of the oil cylinder (9) is hinged to the front end bottom of the lower connecting rod (22).

7. The liftable excavator with emergency escape passage according to claim 5, characterized in that The two armrests (42) are respectively vertically arranged above the two first hinge seats (8).

8. The liftable excavator with emergency escape passage according to claim 3 is characterized in that A placement plate (10) for placing a safety pin (5) is horizontally arranged on the left or right side of the platform base (3), and the placement plate (10) is provided with a placement hole.

9. The liftable excavator with emergency escape passage according to claim 1, characterized in that The rear window glass (6) of the cab (1) can be opened and closed.

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